UNDERGROUND STORAGE TANK DECOMMISSIONING AND RISK-BASED CLOSURE

FORMER FRONTIER LEATHER SITE

15104 SW OREGON STREET SHERWOOD, OREGON 97104

LUST FILE NO.: 34-07-1896 (ESCI FILE NO.: 116, FACILITY 2687)

Prepared on behalf of:

Creekside Environmental Consulting, LLC 21790 Southwest Chehalis Court

Tualatin, Oregon 97062 T. (503) 692-8118 F. (503) 885-9702

Prepared by:

PO Box 80747 Portland, Oregon 97280-1747

T. 503-452-5561 F. 503-452-7669

Project No.: 351-05009-06

February 8, 2008 (revised March 6, 2008)

UNDERGROUND STORAGE TANK DECOMMISSIONING AND RISK-BASED CLOSURE

FORMER FRONTIER LEATHER SITE 15104 SW OREGON STREET SHERWOOD, OREGON 97104

LUST FILE NO.: 34·07·1896 (ESCI FILE NO.: 116, FACILITY 2687)

Prepared by:

Mike Krzeminski, Environmental Scientist, ENW

Decommissioning Supervisor License Number: 26613 Expiration Date: November 27. 2009 Soil Matrix Supervisor License Number: 26612 Expiration Date: November 27. 2009 HOT Supervisor License Number: 6614 Expiration Date: November 27.2009

Reviewed by:

~~ Neil Woller, R.G., Senior Hydrogeologist, EN

Project No.: 351-05009-06

February 8, 2008 (revised March 6, 2008)

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CONTENTS

TABLES AND FIGURES.............................................................................................................................. 1 ACRONYMS AND ABBREVIATIONS ......................................................................................................... 2 EXECUTIVE SUMMARY .............................................................................................................................. 3 1.0 INTRODUCTION.............................................................................................................................. 5

1.1 Background ....................................................................................................................... 5 1.2 Purpose.............................................................................................................................. 6 1.3 Scope of Work................................................................................................................... 6

2.0 SITE SETTING................................................................................................................................. 8 2.1 Location and Description................................................................................................. 8 2.2 Topography ....................................................................................................................... 8 2.3 Geologic Setting................................................................................................................ 8 2.4 Hydrogeologic Setting...................................................................................................... 9

2.4.1 Surface Water....................................................................................................... 9 2.4.2 Ground Water ....................................................................................................... 9

3.0 METHODS AND PROCEDURES.................................................................................................. 10 3.1 UST Decommissioning................................................................................................... 10 3.2 Soil and Ground Water Sampling.................................................................................. 11

3.2.1 Soil....................................................................................................................... 11 3.2.2 Ground Water ..................................................................................................... 11 3.2.3 Analytical Methods ............................................................................................ 11

3.3 Cleanup Standards ......................................................................................................... 12 3.3.1 Soil Matrix Cleanup Standards......................................................................... 12 3.3.2 Risk-Based Decision Making............................................................................ 13 3.3.3 Background Concentrations (Metals).............................................................. 13

3.4 Waste Management and Disposal................................................................................. 13 4.0 UST DECOMMISSIONING............................................................................................................ 14

4.1 UST Description .............................................................................................................. 14 4.2 Fluid Removal.................................................................................................................. 14 4.3 UST Exposure by Soil Removal..................................................................................... 14 4.4 UST Cleaning................................................................................................................... 14

5.0 IMPACTED SOIL REMOVAL AND ASSOCIATED SOIL AND GROUND-WATER SAMPLING 16 5.1 January 23, 2008 ............................................................................................................. 16 5.2 January 24, 2008 ............................................................................................................. 16 5.3 January 25, 2008 ............................................................................................................. 16 5.4 January 31, 2008 ............................................................................................................. 17 5.5 February 1, 2008.............................................................................................................. 17

6.0 ANALYTICAL RESULTS .............................................................................................................. 18 6.1 Characterization Sampling............................................................................................. 18 6.2 Residual Subsurface Soil Characterization Sampling ................................................ 18 6.3 Surface Soil Confirmation Sampling ............................................................................ 19

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6.4 Subsurface Soil Confirmation Sampling ...................................................................... 19 6.5 Ground Water Sampling Results................................................................................... 20

7.0 RISK-BASED ASSESSMENT....................................................................................................... 22 7.1 Identification of Constituents of Interest...................................................................... 22 7.2 Identification of Constituents of Potential Concern.................................................... 22

7.2.1 Soil....................................................................................................................... 23 7.2.2 Ground Water ..................................................................................................... 23

7.3 Conceptual Site Model ................................................................................................... 23 7.3.1 Media of Concern............................................................................................... 23 7.3.2 Land Use and Ground Water Use – Potential Receptors .............................. 23 7.3.3 Pathways of Concern ........................................................................................ 24 7.3.4 Developed Conceptual Site Model ................................................................... 25 7.3.5 Evaluation of COPCs ......................................................................................... 25 7.3.5.1 Subsurface Soil .................................................................................................. 25 7.3.5.2 Ground Water ..................................................................................................... 26

7.4 Evaluation of Risk to the Environment......................................................................... 26 7.5 Discussion....................................................................................................................... 27

8.0 CONCLUSIONS AND RECOMMENDATIONS............................................................................. 28 9.0 LIMITATIONS ................................................................................................................................ 29 APPENDICES APPENDIX A ODEQ UST REGISTRATION, DECOMMISSIONING NOTIFICATION, CHECKLIST AND

REPORT APPENDIX B SITE PHOTOGRAPHS APPENDIX C LABORATORY ANALYTICAL REPORTS APPENDIX D SOIL MATRIX SCORE SHEET AND CHECKLIST APPENDIX E WASTE RECEIPTS

TABLES AND FIGURES

Table Location 3-1 Analytical Methods ...............................................................................................Section 4

7-1 Summary of Pathway Analysis for Human Receptors..........................................Section 5

7-2 Risk Evaluation of Identified COPCs in Soil .........................................................Section 5

7-3 Risk Evaluation of Identified COPCs in Ground Water ........................................Section 5

1 Summary of Analytical Results, Soil .......................................... Behind Text (Tables Tab)

2 Summary of Analytical Results, Ground Water .......................... Behind Text (Tables Tab)

Figure Figure No. Site Vicinity Map ........................................................................................................................... 1

Site Plan........................................................................................................................................ 2

Sampling Location Diagram, Soil (as of 1/24/2008)...................................................................... 3

Sampling Location Diagram, Soil (as of 2/1/2008)........................................................................ 4

Sampling Location Diagram, Ground Water ................................................................................. 5

Residual Petroleum Concentrations (In Situ) Remaining at the Site ............................................ 6

Conceptual Site Model (in text)..................................................................................................... 7

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ACRONYMS AND ABBREVIATIONS

API American Petroleum Institute bgs below ground surface BTEX benzene, tolulene, ethylbenzene and total xylenes CERCLIS Comprehensive Environmental Response, Compensation and Liability

Information System COIs constituents of interest COPCs constituents of potential concern Creekside Creekside Environmental Consulting DRO diesel-range organics ENW EVREN Northwest, Inc. EPA U. S. Environmental Protection Agency GRO gasoline-range organics LUST Leaking Underground Storage Tank mg/Kg milligrams/Kilogram µg/L micrograms per Liter NRC NRC Environmental Services NWTPH-Dx Northwest analytical method for diesel and oil NWTPH-HCID Northwest analytical method for hydrocarbon identification ODEQ Oregon Department of Environmental Quality OARs Oregon Administrative Rules OVM organic vapor monitor ORELAP Oregon Environmental Laboratory Accreditation Program OWRDGD Oregon Water Resources Department Grid Database PAHs polynuclear aromatic hydrocarbons PCBs polychlorinated biphenyls PSC Philip Services Corporation RBCs risk-based concentrations RBDM Risk-Based Decision Making for Remediation of Petroleum Contaminated

Sites, ODEQ September 2003 Guidance Document RCRA Resource Conservation and Recovery Act RRO residual (oil) range organics SOW scope of work TCE trichloroethylene TMB trimethylbenzene USGS United States Geological Survey UST underground storage tank VEC Varchan Environmental Construction VOCs volatile organic compounds WCM West Coast Marine Cleaning, Inc.

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EXECUTIVE SUMMARY

The former Frontier Leather Company property, located at 15104 SW Oregon Street in Sherwood, Oregon, is undergoing Oregon Department of Environmental Quality-directed environmental cleanup related to historical tannery operations conducted at the site. In October 2007, an approximate 8,000-gallon capacity underground storage tank was discovered during demolition of the concrete floor slab of the tannery facility building at the subject site. Characterization of the tank contents and soil above the tank indicated that the tank was most likely used as a waste oil tank and that the residual contents required management as a hazardous waste; impacted soils were approved for disposal at a Subtitle D landfill. A work plan for decommissioning the tank was prepared for and approved by the Oregon Department of Environmental Quality.

In December 2007 and January 2008, fluid and solid debris were removed from the tank and taken to appropriate disposal facilities. Following removal of the tank contents, the tank was thoroughly cleaned, removed from the ground with a crane, and transported off-site for recycling in accordance with national standards of practice. Upon removal, the tank was observed to be attached with metal straps to a concrete mold around the bottom half of the tank, designed to act as a “dead man” weight to keep the tank firmly in place under potentially buoyant conditions. The top of the concrete mold was measured at approximately four (4) feet below ground surface. Soils surrounding the tank were visibly impacted. Ground water was encountered at approximately five (5) feet below ground surface.

Removal of the tank also revealed residual impacted soils; characterization samples representative of “worst case” impacts were collected. Subsequently, over the course of a week and with Oregon Department of Environmental Quality involvement, impacted soils were removed, ground-water samples were collected from test pits located at either end of the former tank location and confirmation soil samples were collected. Excavated soils were placed directly in trucks and transported to Hillsboro Landfill for disposal.

As previously approved by the Oregon Department of Environmental Quality, stockpiled arsenic-impacted soil was used to backfill the UST excavation to within four(4)-feet of the ground surface (approximately 30 cubic yards). The balance of the stockpile was then transported to Hillsboro Landfill.

Soil and ground-water sampling results indicated that:

• All impacts to shallow surface soil (up to three [3] feet depth) were removed.

• Constituents of potential concern in subsurface soils in the vicinity of the former underground storage tank were benz[a]anthracene, naphthalene, and diesel- and residual-range organics. (Concentrations of these constituents exceeded their respective conservative risk-based screening levels from state guidance.)

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• Constituents of potential concern in ground water were naphthalene, trichloroethene, 1,2,4- trimethylbenzene, and diesel- and residual-range organics

A risk-based assessment was performed for the constituents commonly associated with waste oil. A conceptual model was developed to identify complete exposure pathways from the release source to human receptors. The potential receptors were identified as occupational workers and excavation/trench workers. Pathways identified as complete were volatilization into interior and exterior air for occupational workers and dermal contact-incidental ingestion for excavation workers and construction workers. Based on the conceptual model performed as part of the risk-based assessment, none of the constituents of potential concern in either subsurface soils or ground water is likely to cause an unacceptable health risk by the identified complete exposure pathways. Therefore no additional investigation or remediation is required at this time.

ENW recommends that a Soil and Ground Water Management Plan which describes appropriate handling and disposal procedures be developed in the event that residual impacted soils and/or ground water are disturbed in the future. ENW further recommends that ODEQ grant regulatory closure to LUST File No. 34-07-1896 and issue a “No Further Action Required” letter. The property owner is required to keep a copy of this report and regulatory closure letter for ten years after he/she sells or otherwise transfers the property.

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1.0 INTRODUCTION

The former Frontier Leather Company property, located at 15104 SW Oregon Street in Sherwood, Oregon (subject site; Figure 1), is undergoing Oregon Department of Environmental Quality (ODEQ)-directed environmental cleanup related to historical tannery operations conducted at the site. This report describes the decommissioning of an underground storage tank (UST) discovered during site demolition and the risk-based assessment of associated impacted soil and ground water.

This work was performed in accordance with the Workplan for Underground Storage Tank Decommissioning1, which was approved by the ODEQ in January of 2008. Creekside Environmental Consulting (Creekside) requested EVREN Northwest, Inc. (ENW) to collaborate on the project and prepare this report.

1.1 Background The former Frontier Leather Company, which began operating a tannery at the subject site in 1947, is an Environmental Protection Agency (EPA) Comprehensive Environmental Response, Compensation and Liability Information System (CERCLIS) listed site (CERCLIS No. 009043357) and ODEQ Environmental Cleanup Site Information (ECSI) listed site (ECSI No. 116, Facility 2687). Numerous site investigations with extensive regulatory involvement have taken place at the subject site. A comprehensive history of the site is described in a March 2006 progress report compiled by Creekside2.

In October 2007, an abandoned, approximately 8,000-gallon capacity UST was identified during demolition of the concrete floor slab of the tannery facility building (the UST was originally thought to be 10,000 gallons in capacity, but exposure by excavation showed that it was smaller).

Initial characterization samples of the UST contents indicated that the tank contained waste oil (based on analysis by analytical method NWTPH-HCID [hydrocarbon identification]); analytical results are presented in Table 1, following the text. Detections included low-level concentrations of several volatile organic constituents (VOCs): benzene, toluene, ethylbenzene, total xylenes (collectively referred to as BTEX constituents), naphthalene, cis-1,2-dichloroethylene, trichloroethylene (TCE), and trimethylbenzenes (TMBs). Profiling conducted by Creekside showed the UST contents to be hazardous waste.

During initial removal of the fluids from the tank, large quantities of solid debris (described in detail in Section 3.1 of this report) including concrete rubble, soil, wood and metal waste were

1 ENW. , 2008. Workplan for Underground Storage Tank Decommissioning, Former Frontier Leather Company Site. January. 2 Creekside. 2006. Progress Report No. FL-2006-1, Fire Debris Demolition & Disposal, Former Frontier Leather Facility, DEQ

ECSI #116. March 20.

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discovered inside the tank (the presence of this solid debris was unknown when the workplan was submitted and approved). Since demolition activities were underway at the site, it is likely that this material was accidentally bulldozed into the tank prior to its discovery. Consequently, the solid debris inside the tank was also managed as a hazardous waste.

The introduction of this solid debris into the tank apparently displaced the fluid contents, causing an “overspill” out of the access ports in the top of the tank, impacting surface soils in the immediate vicinity of the tank. The release was reported to the ODEQ’s Leaking Underground Storage Tank (LUST) Program, and was assigned LUST File No. 34-07-1896. Based on analytical data for the impacted surface soils, ODEQ permitted these soils to be transported and disposed at a Subtitle D landfill.3

This report specifically addresses the UST decommissioning and related activities for the above referenced LUST file. All other work at the site is being performed for and directed by the ODEQ’s Cleanup Program.

1.2 Purpose The purpose of the project was to decommission the UST in a safe and appropriate manner following applicable guidance and regulations and to properly address associated impacted soil and ground water, with a goal of obtaining regulatory closure for the LUST file at the site from ODEQ.

1.3 Scope of Work ENW completed the following Scope of Work (SOW) for this project:

1. Submitted a work plan outlining proposed decommissioning methods to ODEQ for approval.

2. Registered the UST system with ODEQ and provided notice of decommissioning (Appendix A).

3. Provided a health and safety plan for staff and subcontractors on-site during this SOW.

4. Obtained appropriate Resource Conservation and Recovery Act (RCRA) hazardous waste disposal permits.

5. Decommissioned the UST per national standards of practice.

6. Performed soil removal to remediate the most impacted soils from the UST location.

7. Characterized and delineated remaining subsurface soil and ground-water impacts beneath the former tank location.

3 The tank waste was determined to be a listed hazardous waste based on concentrations of TCE. The soil was tested to determine

if it was characteristic hazardous waste based on Toxicity Characteristic Leaching Procedure (TCLP) results for TCE. The soil did not fail TCLP criteria (i.e., 0.5 mg/L) and was managed as a special waste and disposed of at the Hillsboro Landfill.

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8. Submitted soil and ground-water samples to an independent Oregon Environmental Laboratory Accreditation Program (ORELAP) accredited laboratory for chemical analyses under chain-of-custody documentation.

9. Evaluated analytical results with respect to Oregon Soil Matrix Cleanup Regulations and ODEQ’s Risk-Based Decision Making for Remediation of Petroleum-Contaminated Sites (RBDM) September 2003 guidance document.

10. Restored the UST excavation to an acceptable condition using ODEQ-approved backfill materials.

11. Prepared this report to ODEQ documenting work conducted, findings and analytical data, and requesting closure in-place of residual impacts.

The field activities described in this report were performed from October 2007 to February 1, 2008.

2.0 SITE SETTING

2.1 Location and Description The former Frontier Leather Company property is located at 15104 SW Oregon Street in a commercial-residential district of the city of Sherwood, Oregon (Figure 1). The site is bounded by a wetlands area to the north, SW Oregon Street to the east and south, and railroad tracks to the west (see Figure 2). Commercial properties are present further to the north and west, and a single family residential neighborhood is present to the east and south, across SW Oregon Street. The site is zoned Light Industrial (LI) by the City of Sherwood.

The site has recently been cleared of all the former structures and is currently vacant and undeveloped. The UST which is the subject of this report was located in the western portion of the property, beneath the northern portion of the former tannery building (Figure 2).

2.2 Topography The subject site is located within the U.S. Geological Survey (USGS) Sherwood 7.5-minute quadrangle, at an approximate elevation ranging from 195 to 125 feet above mean sea level (Figure 1). The site slopes gently to moderately to the northeast, towards Rock Creek. Rock Creek flows northward and discharges to the Tualatin River, located approximately two (2) miles to the north of the subject property.

2.3 Geologic Setting The subject property is located in the Tualatin River Basin of northwestern Oregon. The Tualatin River Basin is a structural depression between the Chehalem Hills to the south, Oregon Coast Range to the west, and Tualatin Mountains and Portland Hills to the northeast and east. The erosional and depositional alluvial processes of the Tualatin River and its tributary streams have modified the structural depression of the basin. Sediments within the basin fill include erosional products of the surrounding highlands. In addition, during late Pleistocene time (approximately 12,000-years before present), numerous catastrophic floods (Missoula Floods) backwashed into the Tualatin River Basin from the Willamette Valley to the east. These flood waters deposited large volumes of sediment throughout the Basin, and at times were dammed up within the basin before being released to down-gradient areas.

During the soil removal activities described in this report, soils encountered beneath the site consisted of fill materials from the surface to around four (4) feet below ground surface (bgs). Underlying the fill layer was silty clay with medium sands to around ten (10) feet bgs.

ENW accessed the Oregon Water Resources Department Grid Database (OWRDGD) to determine subsurface conditions in the vicinity of the subject site. Several monitoring wells completed at the site encountered silty clay soils below fill materials to an approximate depth of 11 feet, which were in turn underlain by silt, silty sand, and sand to 18 feet bgs. At a

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neighboring site, monitoring well logs indicate that silty sand directly underlies the surficial fill materials to a depth of 25 feet, which in turn overlies at least five (5) feet of weathered silty clay.

2.4 Hydrogeologic Setting

2.4.1 Surface Water Topographic mapping by the USGS indicates that the site slopes gently northeastward toward Rock Creek. Consequently surface drainage, where unmodified, is also toward the northeast. The site is outside the 100-year flood plain and does not contain any wetlands.4

2.4.2 Ground Water Ground water was encountered during the decommissioning activities at around nine (9) feet bgs, rising to a depth of approximately five (5) feet in excavations. Based on hydrogeologic studies at the site, ground-water flow direction should be toward the northeast.

4 City of Portland’s website: www.portlandmaps.com

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3.0 METHODS AND PROCEDURES

The SOW for this project (see Section 1.3) was performed with the following specific objectives:

• To conduct a thorough and cost-effective UST decommissioning and associated work that meets both the needs of our client and the requirements of applicable regulations.

• To perform the decommissioning and associated field-work in a safe manner for technical personnel as well as others, and with minimum permanent impacts to the subject site.

• To ensure that information and data collected is certifiable and valid for the intended use.

The rest of this section describes the methods and procedures used to conduct the UST decommissioning and associated work; following sections describe the work and findings. A photographic log of all the field work is presented in Appendix B.

3.1 UST Decommissioning Decommissioning of the UST system was based on the procedures referenced in the following documents:

1. American Petroleum Institute (API) 2015, "Cleaning Petroleum Storage Tanks," 1994.

2. ODEQ, "Cleanup Rules for Leaking Petroleum UST Systems," November 1998.

In October and November of 2007, Creekside characterized both the UST contents and surrounding surface soils (visually observed to be impacted). Based on the analytical results (described in Section 6.1) and ODEQ’s hazardous waste regulations, the product within the tank was determined to be a hazardous waste (requiring disposal at an appropriate hazardous waste facility). The impacted surface soils, although considered hazardous waste under the “contained-in” rule, could be disposed at a Subtitle D landfill under ODEQ authorization3.

Prior to commencing UST decommissioning activities:

• Appropriate notice of decommissioning was given to the ODEQ.

• A utility locate was provided by the “one call” public utility locate service.

• A health and safety tailgate meeting was conducted (as needed) with all on-site personnel and subcontracts to review the site health and safety plan and the scope of work prior to entering the site.

Details of the UST decommissioning are described in Section 4.0.

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3.2 Soil and Ground Water Sampling After the UST was removed, residual oil impacts were indicated in the tank excavation. Section 5.0 describes the remedial activities and summarizes the collection of soil and ground-water samples. Sampling methods and procedures are described here.

3.2.1 Soil All soil samples were collected from freshly excavated soils in the excavator bucket and transferred with fresh Nitrile gloves into sample containers provided by the laboratory. Headspace within the containers was minimized before sealing. Samples were also placed in Ziploc bags for headspace screening with an organic vapor monitor (OVM) and field identification. The samples were each marked with a distinctive designation, the date, time, project number, and sampler’s name, and then immediately placed in cooled storage until delivered to the laboratory under chain-of-custody protocols.

Additionally, samples for volatile organic compound (VOC) analyses were collected according to the proscribed procedures of U.S. Environmental Protection Agency (EPA) Method 5035A, using sampling kits provided by the laboratory.

3.2.2 Ground Water Ground-water samples were collected using a clean disposable plastic bailer and immediately transferred to laboratory-supplied bottles. Ground-water samples to be analyzed for diesel range organics (DRO) were collected in 500-milliliter glass amber bottles preserved with aliquots of hydrochloric acid. Ground-water samples to be analyzed for VOCs were collected in volatile organic analysis vials preserved with aliquots of hydrochloric acid, prepared by the laboratory. Water samples collected for polynuclear aromatic hydrocarbons (PAHs) analysis were collected in unpreserved one (1)-liter brown glass containers (Boston Rounds). The sample containers were filled completely and immediately sealed to eliminate headspace. The samples were each marked with a distinctive designation, the date, time, project number, and sampler’s name, and then immediately placed in cooled storage until delivered to the laboratory under chain-of-custody protocols.

3.2.3 Analytical Methods Laboratory analyses were performed by Friedman & Bruya, Inc., of Seattle, Washington. Initially, analyses of the tank fluid and impacted surface soil (initial characterization samples) were performed for gasoline, diesel and heavy oil range hydrocarbons by Northwest Total Petroleum Hydrocarbon Identification (NWTPH-HCID), reported as detected or not detected. Based on the results, these samples were further quantified for diesel range organics (DRO) and residual oil range organics (RRO) by NWTPH-Dx. The samples were also analyzed for VOCs by EPA Method 8260; for RCRA metals by EPA Method 200.8, and for polychlorinated biphenyls (PCBs) by EPA method 8082.

Based on the results of the initial characterization samples, all subsequent soil and ground-water samples were analyzed only for DRO, RRO, and VOCs. Selected samples were also

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analyzed for PAHs by EPA method 8270 and by method NWTPH-HCID, as required by the ODEQ UST Program. Copies of the laboratory analytical reports are provided in Appendix C. Table 3-1 describes the analytical plan.

Table 3-1. Analytical Plan Analytical

Method Constituents Tank Fluid (Product)

Ground Water Soil

NWTPH-HCID

Northwest Total Petroleum Hydrocarbon Identification

Initial fluid in tank Not analyzed

Initial surface soil characterization sample, and UST assessment samples

NWTPH-Dx

Total Petroleum Hydrocarbons–Diesel-range extended quantification [diesel-range petroleum hydrocarbons (DRO) and oil-range petroleum hydrocarbons (RRO)]

Initial fluid in tank All samples All samples

EPA 200.8; 7471A

RCRA 8 Hazardous Metals (Arsenic, barium, cadmium, chromium, lead, mercury, selenium, silver)

Initial fluid in tank Not analyzed Not analyzed

EPA 8082 Polychlorinated Biphenyls (PCBs) Initial fluid in tank Not analyzed Initial surface soil

characterization sample

EPA 8260 Volatile Organic Compounds (VOCs)

Initial fluid in tank All samples All samples

EPA 8270 Polyaromatic Hydrocarbons (PAHs) Not analyzed Selected Sample

Sample with highest DRO concentration

3.3 Cleanup Standards

3.3.1 Soil Matrix Cleanup Standards The Oregon Administrative Rules (OARs) 340-122-0205 through 0360 (Soil Matrix Cleanup Rules) were developed as part of the UST Cleanup Rules. However, the ODEQ’s Risk-Based Decision Making for the Remediation of Petroleum-Contaminated Sites (RBDM) guidance document (2003 revision) states that the Soil Matrix Cleanup levels developed under those rules are considered to be adequately protective for petroleum contamination regardless of source. Therefore the Soil Matrix Cleanup standards may also be used as cleanup levels for sites being remediated under the Hazardous Substance Remedial Action Rules.

The Soil Matrix Cleanup Rules permit soil impacts from petroleum hydrocarbons to be cleaned up by setting standards based on site conditions. The cleanup levels are determined for the site by inputting environmental parameters with site-specific values. The values used in determining the Soil Matrix Cleanup level for a site are:

• Annual rainfall • Soil type • Sensitivity of the uppermost aquifer • Depth to ground water • Distance to nearest potential receptors

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• Number of potential receptors The Soil Matrix score appropriate for the site was determined to be 25, indicating Level II cleanup standards (80-milligrams per kilogram [mg/Kg] gasoline-range organics [GRO] and 500-mg/Kg DRO and RRO) were appropriate. The Soil Matrix Cleanup Score Sheet and Checklist for the site are presented in Appendix D.

3.3.2 Risk-Based Decision Making Where Soil Matrix Cleanup standards are not met, ODEQ allows closure using a risk-based approach described in the agency’s RBDM guidance document, 2003 revision. Risk-based concentrations (RBCs) tabulated in Appendices A and J of the RBDM guidance document were developed as screening levels for suspect sites based on Oregon unacceptable additional risk criteria for cancer occurrence and for non-carcinogenic health impacts. The State of Oregon considers acceptable additional risk of cancer from contact with carcinogenic constituents at less than one in one million incidences, or, for non-carcinogenic constituents, below the constituent threshold concentration at which health impacts would occur. Appendix J of the RBDM guidance document additionally states that there is no reason the RBDM approach should be limited to petroleum hydrocarbons, and the approach described [in the guidance document] may be generalized to chemicals other than petroleum hydrocarbons. Residential standards were used for initial ‘conservative’ screening.

3.3.3 Background Concentrations (Metals) Metals were also compared to default background concentrations in soil determined by the ODEQ’s Oregon Toxicology Work Group.

3.4 Waste Management and Disposal All waste generated during the UST decommissioning and associated soil remediation by removal was properly handled and disposed. Disposal receipts are included in Appendix E and document disposal of:

Approximately 6,800 gallons of fluid pumped from the UST at PSC’s treatment facility in Tacoma, Washington.

Approximately 18 tons of oil-contaminated debris removed from the UST at US Ecology’s treatment facility in Grand View, Idaho.

Approximately 2,500 gallons of sludge/rinsate removed from the UST at US Ecology’s treatment facility in Grand View, Idaho.

The UST at Metro Metals in Portland, Oregon (to be recycled).

Approximately 171 tons of petroleum contaminated soil at Hillsboro landfill under permit # 6159 issued by Waste Management Inc.

Approximately 331 tons of arsenic-impacted soil/debris at Hillsboro landfill under permit # 1683 issued by Waste Management Inc.

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4.0 UST DECOMMISSIONING

4.1 UST Description The UST was oriented east to west and was determined to be approximately 21.5 feet in length and eight (8) feet in diameter (approximately 8,000 gallons in capacity). The top of the tank was approximately flush with the surrounding grade (after removal of all onsite structures and concrete floors/foundations). Two access ports, each approximately two (2) feet in diameter, were present on the top of the tank, without any locking or latching covers. Upon removal, the tank was observed to be set in a concrete mold (present only around the bottom half of the tank), to which the tank was strapped, acting as a “dead man” weight to keep the tank firmly in place under potential buoyant conditions. The top of the concrete mold was measured at approximately four (4) feet bgs. Figure 3 presents the layout of the former UST position.

4.2 Fluid Removal On December 18, 2007, Philip Services Corporation (PSC) removed a total of 3,000-gallons of fluid (profiled as waste oil) from the tank using a vacuum truck. As the level of product in the tank lowered, it was discovered that a significant amount of solid debris was present in the bottom half of the tank. Upon discovery of the solid debris in the tank, no further product removal was performed that day. PSC disposed of the removed fluid at their treatment facility in Tacoma, Washington.

On December 27, 2007, NRC Environmental Services (NRC) removed the remaining liquid product inside the tank (1,340 gallons) using a vacuum truck. NRC disposed of the removed fluid at the PSC treatment facility in Tacoma, Washington.

4.3 UST Exposure by Soil Removal On January 21, 2008, Varchan Environmental Construction (VEC) removed the surface soils overlying the top of the UST, so it could be accessed for cleaning. The overburden (which had previously been sampled and shown to be impacted; see Section 6.1) was placed directly into trucks as it was excavated and transported to Waste Management's Subtitle D landfill in Hillsboro, Oregon. Upon exposure a large hole was observed in the top of the west end of the tank, and VEC further enlarged the hole in order to facilitate access to the tank’s interior for solid debris removal and cleaning. It was observed that the tank was approximately half full of oily fluid. Since fluids had been previously removed from the UST as described above, it was determined that, given the shallow depth of ground water (approximately 5 feet), ground water was likely entering the tank through its various corroded holes.

4.4 UST Cleaning On January 21 and 22, 2008, West Coast Marine Cleaning, Inc. (WCM) was contracted to remove the remaining oily fluids, sludge, and solid debris from the tank, and to clean the inside

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of the tank. WCM utilized confined space procedures. Approximately 2,500 gallons of tank fluids (profiled as waste oil) were pumped using a vacuum truck and taken to PSC’s treatment facility in Tacoma, Washington. The solid debris was removed using a Guzzler vacuum truck connected to an air-tight vacuum box (in which the solids were collected). A total of approximately 13 tons of solid debris (profiled as oil-contaminated debris and managed as hazardous waste) was removed from the tank and taken to US Ecology’s treatment facility in Grand View, Idaho.

While removing the solid debris from inside the tank, several approximate 15 to 20-gallon steel drums were found inside the tank. Given their shape and size, they would have fit inside the access ports in the top of the tank. The drums were thoroughly corroded, and were likely placed inside the tank many years ago (the drums may be a likely source of the chlorinated solvents found inside the tank). All large solid debris found in the tank was placed inside a drop box lined with plastic sheeting (along with all hoses and equipment contaminated during the product/debris removal).

Once fluids and debris were removed, the UST was cleaned by 1) hand scraping the tank interior to remove as much sludge as possible, 2) rinsing the tank interior with degreaser cutter stock (diesel), and 3) rinsing the tank interior with fresh water and soap rinse. All remaining sludge in the bottom of the tank (along with all rinsate generated during the tank cleaning) was removed using a vacuum truck (included in the fluids total given above).

On January 23, 2008, a crane was mobilized to the site in order to remove the tank. VEC excavated additional surface soils surrounding the top of the tank in order to relieve the tank and allow for removal. The soils were observed to be impacted consistent with previously removed overburden and were directly loaded into trucks for disposal to Hillsboro Landfill. Approximately four (4) inches of ground water had accumulated in the bottom of the tank overnight. The crane was used to lift the tank out of its position and tilt the tank slightly in order to let the ground-water drain from a hole in the bottom of the tank. The tank was placed on a trailer and taken by VEC to Metro Metals in Portland, Oregon for recycling.

Upon removal, the tank was observed to be extremely corroded, with many large, through-going holes. The exterior of the tank was covered with waste oil.

The concrete mold that had been used to secure the UST was observed to contain about six (6) inches of product/water and ground-water intrusion into the “saddle” of the mold was observed through several holes in the side of the concrete mold. Waste oil product was observed to be seeping into the mold from soils surrounding the top of the mold. The concrete dead-man was left in place. See Appendix A for State UST Decommissioning Checklist and Report forms.

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5.0 IMPACTED SOIL REMOVAL AND ASSOCIATED SOIL AND GROUND-WATER SAMPLING

Removal of the UST exposed visibly impacted soil in the tank excavation. This section describes the soil removal and associated soil and ground-water sampling conducted at the former UST location in chronological order. Figures 3 and 4 show the former UST location and soil sampling locations and results through January 24 (Figure 3) and from January 24 through February 1 (Figure 4). Figure 5 shows ground-water sampling locations and results. Figure 6 shows residual petroleum concentrations (in situ) remaining at the site.

5.1 January 23, 2008 ENW collected four (4) soil samples (identified as GS01 through GS04) from the top of each end of the concrete mold (at four [4] feet bgs) to characterize the magnitude of impacts remaining at the former UST location (i.e. the “worst case” samples; see Figure 3 for sampling locations).

Subsequently, VEC dug two test pits immediately adjacent to the eastern and western ends of the concrete mold to determine the vertical extent of the soil impacts. Impacted soils were encountered throughout both test pits (which were dug to approximately 10 feet bgs). Excavated soils were placed inside the concrete mold to help absorb the remaining product/ground water within the concrete mold before being loaded into trucks for disposal at Hillsboro Landfill. Ground water was initially encountered in the test pits at about nine (9) feet bgs, and a soil sample was taken at that depth in each test pit (identified as GS05 and GS06). Creekside collected a ground-water sample from the eastern test pit.

5.2 January 24, 2008 ENW and VEC returned to the site to remove all impacted surface soils above the top of the concrete mold (four [4] feet). Upon arriving at the site, ground water in the test pits had risen and stabilized at about five (5) feet bgs, and a small amount had again entered the “saddle” of the concrete mold. VEC proceeded to remove all visibly impacted surface soils surrounding the tank to a depth of four (4) feet. Impacted soils were loaded directly into trucks for disposal at Hillsboro Landfill. Upon completion of the surface soil removal a total of nine (9) confirmation samples (identified as GS07 through GS15) were collected from the sidewalls of the excavation (at three [3] feet bgs; see Figure 3 for locations). Floor samples were not collected at this time as impacts deeper than three (3) feet were allowed to remain at the former UST location per ODEQ authorization.

5.3 January 25, 2008 ENW mobilized to the site and collected a ground water sample from the western test pit.

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As previously approved by ODEQ, arsenic-impacted soils stockpiled at the site (resulting from previous environmental cleanup activities at the site) were placed into the “saddle” of the concrete mold to a depth of four (4) feet bgs (approximately 30 cubic yards). The remainder of the excavation was then backfilled with clean crushed rock to flush with the surrounding grade. Remaining arsenic-impacted stockpiled soils were transported offsite for disposal at Hillsboro Landfill (under a separate permit from UST content-impacted soils). The arsenic stockpile was observed to be set on top of plastic sheeting. The plastic sheeting, as well as approximately four (4)-inches of soil beneath the plastic sheeting was also transported offsite for disposal. Additionally, a large pile of arsenic-impacted building debris (concrete, rebar, etc.) was transported to Hillsboro Landfill for disposal under the same permit. A total of approximately 331 tons of arsenic-impacted materials were disposed of from the site.

5.4 January 31, 2008 After reviewing the laboratory analytical data from the “worst case” impacts remaining at the former UST location (below four [4] feet), the ODEQ requested that additional soil removal take place along the northern and southern margins of the former tank concrete mold due to elevated concentrations of volatile chlorinated solvents (specifically trichloroethene [TCE]), which were above vapor intrusion screening values. VEC mobilized to the site and removed impacted soils along the southern side of the concrete mold; the impacted soils were directly loaded into a truck for disposal at Hillsboro Landfill. The excavation reached a depth of about five (5) feet bgs, where visibly impacted soils attenuated. ENW collected a total of four (4) confirmation samples (identified as GS16 through GS19) from the floor and sidewalls of the excavation (see Figure 4 for locations). After collecting the confirmation samples, the excavation was backfilled with clean crushed rock.

5.5 February 1, 2008 VEC removed impacted soils along the northern side of the concrete mold; the impacted soils were directly loaded into trucks for disposal at Hillsboro Landfill. The excavation reached a depth of about seven (7) feet bgs, when visibly impacted soils attenuated. ENW collected a total of four (4) confirmation samples (identified as GS20 through GS23) from the floor and sidewalls of the excavation (see Figure 4 for locations). After collecting the confirmation samples, the excavation was backfilled with clean crushed rock.

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6.0 ANALYTICAL RESULTS

This section presents the results of the soil and ground-water sampling activities associated with the UST decommissioning and soil removal activities described in this report.

6.1 Characterization Sampling As previously stated, initial characterization samples of the UST contents collected in October and November 2007 indicated that the tank fluids were probably waste oil (based on analysis by analytical method NWTPH-HCID), and contained low-level concentrations of BTEX, naphthalene, cis-1,2-dichloroethylene, TCE, and TMBs. The analytical results are presented in Table 1, following the text. Profiling conducted by Creekside showed the UST contents to be a hazardous waste.

The initial characterization sample of impacted surface soils surrounding the tank (Sample FL-UST-SOIL-1) contained 29,900-milligrams per Kilogram (mg/Kg) DRO and 7,350-mg/Kg RRO, which exceeded the Soil Matrix Cleanup Level established for the site (500-mg/Kg DRO or RRO). Additionally, several of the VOCs detected in the tank fluid were present in the surface soils in excess of their most conservative RBC screening values (Table 1). ODEQ determined that the impacted surface soils, although considered hazardous waste under the “contained-in” rule, could be disposed at a Subtitle D landfill.3

Based on these results, all subsequent samples (soil and ground water) were analyzed for DRO, RRO, and VOCs, unless indicated otherwise.

6.2 Residual Subsurface Soil Characterization Sampling After the tank was removed, ENW collected four (4) soil samples (identified as GS01 through GS04) from the top of each end of the concrete mold (at four [4] feet bgs). The soils were visibly impacted with waste oil, and were collected to characterize the magnitude of the impacts remaining in the subsurface soils at the former UST location (the “worst case” samples). Additionally, two (2) samples (identified as GS05 and GS06) were collected from test pits completed at each end of the concrete mold (at nine [9] feet bgs) in order to delineate the vertical extent of the subsurface soil impacts.

The subsurface soil characterization sampling locations are shown in Figure 3. The analytical results are presented in Table 1, after the text, and are described here:

Petroleum Hydrocarbons (DRO and RRO): DRO was detected in GS01 through GS04 at concentrations ranging from 6,000 mg/Kg to 38,000 mg/Kg, exceeding its soil matrix cleanup level of 500 mg/Kg. RRO was detected at concentrations ranging from 990 mg/Kg to 4,900 mg/Kg, also exceeding the soil matrix cleanup level; however, the results were flagged by the laboratory as not being indicative of motor oil.

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DRO was detected in GS05 (collected from the western test pit) and GS06 (collected from the eastern test pit) at concentrations of 77 mg/Kg and 170 mg/Kg, respectively, which is below the soil matrix cleanup level of 500 mg/Kg. RRO was not detected at or above the method reporting limit in either of these analyzed samples. These results suggest that the vertical extent of impacted soils at the former UST location is limited to the top of the ground-water table (around five [5] feet bgs).

VOCs: Several of the VOCs (including BTEX constituents, butylbenzenes, dichlorobenzene, cis-1,2-dichloroethylene, propylbenzene, vinyl chloride, and TMBs) were detected at low levels which did not exceed their most stringent RBC screening values; however, TCE and naphthalene were detected at elevated concentrations exceeding their most stringent RBC screening values in samples GS01 and GS02.

PAHs: The sample with the highest DRO concentration (sample GS02) was also analyzed for PAHs. Several of the PAHs were detected, all but one were below their mostly stringent RBC cleanup values: benz[a]anthracene was detected at 1.1 mg/Kg, which exceeds its most stringent RBC value of 0.15 mg/Kg.

6.3 Surface Soil Confirmation Sampling After surface soils above the top of the concrete mold were removed (depth of removal was four [4] feet), nine (9) confirmation samples (identified as GS07 through GS15) were taken from the sidewalls of the excavation (at three [3] feet bgs) to characterize residual surface soils. Locations are shown in Figure 3. The analytical results are presented in Table 1 after the text, and are also described here:

Petroleum Hydrocarbons (DRO and RRO): DRO and RRO were not detected at or above the method reporting limit in any of the samples analyzed.

VOCs: VOCs were not detected at or above the method reporting limit in any of the samples analyzed.

Surface soil confirmations sampling results indicate no residual impacts in surface soils surrounding the former UST.

6.4 Subsurface Soil Confirmation Sampling After reviewing the laboratory analytical data from the “worst case” impacts remaining at the former UST location (below four [4] feet), the ODEQ requested that additional soil removal take place along the northern and southern margins of the former tank’s concrete mold due to elevated concentrations of volatile chlorinated solvents (specifically TCE), which were above vapor intrusion screening values. After additional excavation in these areas, ENW collected a total of seven (7) confirmation samples (identified as GS16 through GS23, GS18 was not analyzed) from the floor and sidewalls of the excavations. The subsurface soil confirmation

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sampling locations are shown in Figure 4. The analytical results are presented in Table 1, after the text, and are described here:

Petroleum Hydrocarbons (DRO and RRO): DRO and RRO were not detected at or above the method reporting limit in any of the samples analyzed.

VOCs: VOCs were not detected at or above the method reporting limit in any of the samples analyzed.

Subsurface soil confirmations sampling results indicate residual impacts were removed from the areas excavated around the UST concrete mold. However, elevated concentrations of petroleum hydrocarbons exceeding RBC screening values and Soil Matrix Cleanup Levels remain in subsurface soils adjacent to the former UST location (Figure 6); therefore, a risk based assessment was performed and is described in Section 7.0.

6.5 Ground Water Sampling Results Two (2) ground water samples (USTEX-E and DW-080125) were collected at the former UST location, one from each of the test pits located on the eastern and western sides of the concrete mold. Ground water originally entered the test pits at approximately nine (9) feet bgs, but stabilized overnight at approximately five (5) feet bgs. The ground-water sampling locations are shown in Figure 5. The analytical results are presented in Table 2, after the text, and are described below:

Petroleum Hydrocarbons (DRO and RRO): Only USTEX-E was analyzed for DRO and RRO. DRO was detected at 57,000 micrograms per Liter (µg/L), exceeding its screening level RBC of 88 µg/L. RRO was detected at 9,000 µg/L, which also exceeds its screening level RBC of 290 µg/L; however, the results were flagged by the laboratory as not being indicative of motor oil.

VOCs: Only USTEX-E was analyzed for VOCs. Several of the VOCs (including BTEX constituents, butylbenzene, cis-1,2-dichloroethylene, propylbenzenes, and TMBs) were detected at low levels which did not exceed their respective most stringent RBC screening values; however, TCE, naphthalene and 1,2,4-TMB were detected at elevated concentrations which exceeded their most stringent RBC screening values.

PAHs: Only PW-080125 was analyzed for PAHs. Several PAHs were detected, but none exceeded their most stringent RBC cleanup values.

Results show that ground water in the immediate vicinity of the former UST was impacted. However, extensive ground-water monitoring has taken place at the site since the 1980’s, and ODEQ granted closure to ground-water impacts at the site with a restriction on future use. This indicates that the ground-water impacts from the former UST are limited in nature and are not present beyond the immediate vicinity of the former UST (lateral extent or down-gradient movement of the impacts have likely been hindered by the tight silts and clays in which the

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impacts and upper most ground-water table are found). Based on this information and discussions with the ODEQ, the ground-water impacts in the immediate vicinity of the former UST were not formally delineated as ODEQ is not requiring formal delineation based on previous ground-water investigations conducted at the subject site.

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7.0 RISK-BASED ASSESSMENT

Where impacts to soil and ground water are present, the impacts must be evaluated using a risk-based approach described in ODEQ’s Risk Based Decision Making for the Remediation of Petroleum Contaminated Sites (RBDM) guidance document, 2003 revision. Appendix A of ODEQ’s RBDM guidance document and its supplemental guidance materials provided by the agency provide pre-calculated risk-based concentrations (RBCs) which were developed as screening levels for suspect sites, based on Oregon unacceptable additional risk criteria for cancer occurrence and for non-carcinogenic health impacts. The State of Oregon considers acceptable additional risk of cancer from contact with carcinogenic constituents at less than one in one million incidences, or for non-carcinogenic constituents, the constituent threshold concentration at which health impacts would occur. This section conducts a risk-based assessment for soil and ground water, based on all available analytical data associated with residual impacts from the UST, as described in this report.

7.1 Identification of Constituents of Interest Constituents of interest (COIs) associated with UST release (profiled as waste oil) at the site are listed below:

GRO DRO RRO BTEX (benzene, toluene, ethylbenzene and xylenes) PAHs MTBE (methyl t-butyl ether) Iso-propylbenzene, n-propylbenzene, 1,2,4-TMB, and 1,3,5-TMB Hazardous metals (RCRA metals), lead, cadmium, chromium Chlorinated solvents PCBs

This Risk Assessment will follow the conservative approach of using the highest detected concentration of each analyte for each medium.

7.2 Identification of Constituents of Potential Concern

Constituents were initially compared to conservative screening-level RBCs to identify constituents of potential concern (COPCs) in each medium. The residential screening-level concentrations of Appendix A of ODEQ’s RBDM guidance document and subsequent updated guidance materials for both soil and ground water are used since this approach is the most conservative method in assessing potential risk to human heath. The lowest residential RBC is used in the screening process regardless of whether a pathway is complete or not.

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7.2.1 Soil Table 1 summarizes the risk-screening of soil samples collected during the UST remedial actions. As described in the Section 6.0 of this document, benz[a]anthracene, naphthalene, DRO and RRO exceeded the screening level RBCs and are considered COPCs in soil.

Many of the analyzed constituents (see Table 1) were not detected above their respective analytical method detection limits; however those detection limits exceed the risk-based screening concentrations. ODEQ does not require cleanup for petroleum constituents that are not detected by the department-specified analytical methods if standard method detection limits are met. Therefore, these constituents in soils will not be further addressed.

It should also be noted that ODEQ does not provide a RBC for RRO (except for mineral oil) because of the wide variation in compositions, and therefore the agency regulates RRO impacts to soil and ground water by analyses of associated constituents.5

7.2.2 Ground Water Table 2 summarizes the risk screening of the two (2) ground-water samples collected from the test pits adjacent to the former UST location. As described in the Table and in Section 6.0 of this document, naphthalene, TCE, 1,2,4-TMB, DRO and RRO exceeded the screening level RBCs and are considered COPCs in ground water.

7.3 Conceptual Site Model

7.3.1 Media of Concern Soil and ground water are impacted at the former UST location. Surface soils (defined as less than three [3]-foot depth) were impacted from overspill from the top of the tank; however, the impacts in the surface soils were effectively remediated by excavation as evidenced by confirmation sampling (Section 6.3), and do not contain any COPCs. Subsurface soils (defined as greater than 3-foot depth) are impacted with the COPCs listed above (Section 7.2.1).

Therefore surface and subsurface soils and ground water are the media of concern. As surface soils do not contain any COPCs, they will not be carried through the remainder of this assessment.

7.3.2 Land Use and Ground Water Use – Potential Receptors The site is zoned Light Industrial (LI) by the City of Sherwood, which precludes residential development in the future. Additionally, the site is listed as a CERCLIS site with the EPA and an ECSI site with the ODEQ due to extensive heavy metal contamination. ODEQ has restricted any residential development at the site, and has required a paved cap across the surface of the site to prevent movement of and/or dermal contact with any soils at the site.

As the site is currently vacant and will likely be redeveloped in the future, construction and excavation workers may be exposed to dermal contact with impacted subsurface soils.

5 ODEQ. 2003. RBDM guidance document, Section 3.1.6.3. September.

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Additionally, although the entire site will reportedly be paved, this assessment will conservatively consider possible exposure of occupational workers to surface soils, since exterior conditions may change in the future. Therefore, the potential receptors include occupational workers, construction workers, and excavation workers. It is assumed that these receptors are conservative with respect to consideration of the occasional site visitor.

Ground water is not used for drinking water at the site. No domestic wells are located in the vicinity of the subject property. Additionally, ODEQ has determined that there is no beneficial use of shallow ground water in the vicinity of the site and a ground-water use restriction will be placed on the subject site. The City of Sherwood supplies water to residents who live within the City limits. Therefore, the ground-water pathway will not be included in this risk assessment.

7.3.3 Pathways of Concern An exposure pathway is the course a constituent takes from a source to an exposed population. Exposure pathways include four elements: (1) the source of contamination; (2) the means by which a constituent will be released, retained, or travel in a given medium (e.g., air or ground water); (3) a point of potential contact with a receptor; and (4) the means by which contact will occur (e.g., inhalation, ingestion). If any of these elements are missing, the pathway is considered incomplete. Table 7-1 presents a summary of the pathway analysis for human receptors.

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Table 7-1. Summary of Pathway Analysis for Human Receptors Potentially Exposed

Population

Exposure Route, Medium and Exposure Point

Pathway Considered Reason for Selection or Exclusion

Soil

Occupational worker

Leaching to ground water with subsequent ingestion No Ground water is not used as a drinking water

source in the vicinity of the site.

Occupational worker

Inhalation of volatiles from impacted soil (outdoor air) YES Subsurface soils contain volatile constituents.

Occupational worker

Inhalation of volatiles from impacted soil intruding into building (indoor air) YES Subsurface soils contain volatile constituents.

Occupational worker

Direct ingestion, inhalation of volatiles and dermal contact with soil YES

Even though surface soils are no longer impacted and the site will be completely paved, this assessment will conservatively address this pathway.

Construction Worker

Direct ingestion, inhalation of volatiles and dermal contact with soil YES Impacts are present in subsurface soils.

Excavation Worker

Direct ingestion, inhalation of volatiles and dermal contact with soil YES Impacts are present in subsurface soils.

Ground Water

Occupational worker Ingestion of impacted ground water No Ground water is not used for drinking water in

the vicinity of the site.

Occupational worker

Inhalation of volatiles from impacted ground water (outdoor air) YES Shallow ground water impacts are present on

the subject property.

Occupational worker

Inhalation of volatiles from ground water intruding into building (indoor air) YES Ground water contains volatile constituents.

Excavation Worker

Direct ingestion, inhalation of volatiles and dermal contact with ground water YES Shallow ground water is impacted.

7.3.4 Developed Conceptual Site Model Based on the above discussion, a conceptual site model has been developed for the former UST location (Figure 7).

7.3.5 Evaluation of COPCs Since COPCs were identified by the initial screening, they are further screened by identified complete exposure pathways.

7.3.5.1 Subsurface Soil Table 7-2, below, further evaluates the COPCs based on the identified complete exposure pathways for subsurface soil. The table indicates that the CPOCs identified in subsurface soil (benz[a]anthracene, naphthalene, DRO and RRO) do not present an unacceptable health risk by the identified complete exposure pathways, and are not constituents of concern at in soils surrounding the former UST.

As mentioned above, ODEQ does not provide a RBC for RRO and regulates RRO impacts by analyses of associated constituents. As such, all associated constituents have been appropriately evaluated in this risk assessment and do not present an unacceptable health risk

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by the identified complete exposure pathways; therefore, RRO itself does not present an unacceptable health risk by the identified complete exposure pathways.

Table 7-2. Risk Evaluation of COPCs Identified in Subsurface Soil

Occupational Construction Worker Excavation Worker Occupational Occupational

Direct or Indirect Pathway (see notes) DC DC DC IV IV

Contaminant of Concern Note mg/Kg (ppm) Note Note Note Note Note mg/Kg (ppm) Y/NBenz[a]anthracene c, nv 1.1 2.7 21 >Csat 590 >Csat - NV - NV 2.7 NNaphthalene nc, v 24 770 >Csat 710 >Csat 20,000 >Csat 940 3,400 710 NDRO nc, nv 17,000 70,000 23,000 - >Max - >Max - >Max 23,000 NRRO nc, nv 2,400 - >Max - - >Max - >Max - >Max - N

Notes: — = not applicable.mg/Kg = milligram per kilogram.c = carcinogenicnc = noncarcinogenicv = volatilenv = nonvolatileDRO = diesel-range organics.RRO = residual-range organics.

Lowest Applicable RBC

(Soil)COC?Maximum Soil

Concentration

Risk-Based Concentrations (SOIL)

Volatilization to Outdoor Air

Vapor Intrusion into Buildings

mg/Kg (ppm)

RBCsiRBCss RBCsoExposure Pathway Soil Ingestion, Dermal Contact, and Inhalation

Bolded concentrations exceed lowest Pathway Specific Risk-Based

Contaminated Medium

Receptor Scenario

7.3.5.2 Ground Water Table 7-3, below, further evaluates the COPCs based on the identified complete exposure pathways for ground water. The Table indicates that the COPCs identified in ground water (naphthalene, TCE, 1,2,4-TMB, DRO and RRO) do not present an unacceptable health risk by the identified complete exposure pathways, and are not constituents of concern in ground water in the area of the former UST.

Table 7-3. Risk Evaluation of COPCs Identified in Ground Water

Occupational

Direct or Indirect Pathway (see notes) IV IV DS

Contaminant of Concern Note µg/L (ppb) Note Note Note µg/L (ppb) Y/NNaphthalene nc, v 100 540,000 350,000 680 680 NTrichloroethene c, v 2.4 650 110 130 110 NTrimethylbenzene, 1,2,4- nc, v 67 270,000 51,000 1,300 1,300 NDRO nc, nv 57000 - >S - >S - >S --- NRRO nc, nv 9000 - >S - >S - >S --- N

— = not applicable.ug/L = micrograms per Literc = carcinogenicnc = noncarcinogenicv = volatilenv = nonvolatileDRO = diesel-range organics.RRO = residual-range organics.

RBCwo RBCwi RBCwe

GW in ExcavationVolatilization to Outdoor Air

Vapor Intrusion into BuildingsMaximum

Ground Water Concentration

COC?

Receptor Scenario Occupational Construction & Excavation Worker

Lowest Applicable RBC

(Groundwater)

Risk-Based Concentrations (GROUND WATER)µg/L (ppb)

Contaminated Medium

Exposure Pathway

7.4 Evaluation of Risk to the Environment No sensitive environmental lands were identified at the subject property. However, Rock Creek and an associated wetlands area are present immediately to the northeast of the site. As mentioned earlier, ground-water monitoring has been taking place at the site since the 1980’s and ODEQ agreed that ground water was not a media of concern assuming formal restrictions

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of future ground-water use. This indicates that the ground water impacts from the former UST are limited in nature and are not present beyond the immediate vicinity of the former UST (lateral extent or down-gradient movement of the impacts have likely been hindered by the tight silts and clays in which the impacts and upper most ground-water table are found). Based on this information and discussion with ODEQ, the ground-water impacts in the immediate vicinity of the former UST were not formally delineated as ODEQ is not requiring formal delineation based on previous ground-water investigations conducted at the subject site.

Since the former tank location will be capped as part of the proposed development, residual petroleum-impacted soil (the extent of which is shown in Figure 6) should not present an unacceptable risk to the environment.

7.5 Discussion Based on the results of this conservative risk assessment, none of the COPCs (in any medium) have been determined to be a constituent of concern at the property. Therefore, the COPCs at the former UST location do not present an unacceptable health risk by the identified complete exposure pathways.

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8.0 CONCLUSIONS AND RECOMMENDATIONS

An approximate 8,000-gallon capacity UST was discovered in October 2007 during demolition of the concrete floor slab of the tannery facility building at the subject site. Characterization of the tank contents and soil above the tank indicated that the tank was most likely used as a waste oil tank and that the residual contents required management as a hazardous waste.

In December 2007, fluid was removed from the UST and properly disposed. Lowering of the tank contents exposed debris within the tank; possibly introduced during demolition activities occurring around the tank. In January 2008, impacted soil around the tank was removed and disposed at Hillsboro Landfill. At the same time, access to the tank interior was created and fluids were removed, as were solid debris and sludge. The tank was subsequently cleaned and transported off-site for recycling. Exposure, cleaning and removal activities showed the tank to be corroded and leaking. After removal, soils in the tank excavation were observed to be impacted with oil.

Soil and ground-water assessment, impacted soil removal and soil confirmation sampling activities ensued. A risk-based assessment of residual soil and ground water impacts showed they pose no risk to human health or the environment.

As previously approved by ODEQ, previously stockpiled arsenic-impacted soil was used to backfill the UST excavation, to within four (4)-feet of the ground surface (approximately 30 cubic yards). The balance of the stockpile was then transported to Hillsboro Landfill.

ENW recommends that a Soil and Ground Water Management Plan which describes appropriate handling and disposal procedures be developed in the event that residual impacted soils and/or ground water are disturbed in the future,. ENW further recommends that ODEQ grant regulatory closure to LUST File No. 34-07-1896 and issue a “No Further Action Required” letter. The property owner is required to keep a copy of this report and regulatory closure letter for ten years after he/she sells or otherwise transfers the property.

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EVREN Northwest, Inc. 29 351-05009-06, Rev. 1, 3/17/08

9.0 LIMITATIONS

The scope of this report is limited to observations made during on-site work; interviews with knowledgeable sources; and review of readily available published and unpublished reports and literature. As a result, these conclusions are based on information supplied by others as well as interpretations by qualified parties.

The focus of the site closure does not extend to the presence of the following conditions unless they were the express concerns of contacted personnel, report and literature authors or the work scope.

1. Naturally occurring toxic or hazardous substances in the subsurface soils, geology and water,

2. Toxicity of substances common in current habitable environments, such as stored chemicals, products, building materials and consumables,

3. Contaminants or contaminant concentrations that are not a concern now but may be under future regulatory standards,

4. Unpredictable events that may occur after ENW’s site work, such as illegal dumping or accidental spillage.

There is no practice that is thorough enough to absolutely identify the presence of all hazardous substances that may be present at a given site. ENW’s investigation has been focused only on the potential for contamination that was specifically identified in the SOW. Therefore, if contamination other than that specifically mentioned is present and not identified as part of a limited SOW, ENW’s environmental investigation shall not be construed as a guaranteed absence of such materials. ENW has endeavored to collect representative analytical samples for the locations and depths indicated in this report. However, no sampling program can thoroughly identify all variations in contaminant distribution.

We have performed our services for this project in accordance with our agreement and understanding with the client. This document and the information contained herein have been prepared solely for the use of the client.

ENW performed this study under a limited scope of services per our agreement. It is possible, despite the use of reasonable care and interpretation, that ENW may have failed to identify regulation violations related to the presence of hazardous substances other than those specifically mentioned at the closure site. ENW assumes no responsibility for conditions that we did not specifically evaluate or conditions that were not generally recognized as environmentally unacceptable at the time this report was prepared.

Table 1 - Summary of Analytical Data, Soil

[Tank Contents] (Overspill over tank) GS01 GS02 GS03 GS04 GS05 GS06 GS07 GS08 GS09 GS10 GS11 GS12 GS13

UST? Product FL-UST-SOIL-1 GS01-NW-4' GS02-SW-4' GS03-EW-4' GS04-WW-4' GS05TPW-INF-9' GS06-TPE-INF-9' GS07-NE Wall-3' GS08-NC Wall-3' GS09-NW Wall-3' GS10-WC Wall-3' GS11-SW Wall-3'GS12-SC Wall-

3'GS13-SE Wall-

3'10/15/07 11/9/07 1/23/08 1/23/08 1/23/08 1/23/08 1/23/08 1/23/08 1/24/08 1/24/08 1/24/08 1/24/08 1/24/08 1/24/08 1/24/08

fluid waste in tank 1 4 4 4 4 9 9 3 3 3 3 3 3 3

Creekside Creekside ENW ENW ENW ENW ENW ENW ENW ENW ENW ENW ENW ENW ENW

Tank Contents - REMOVED

Overspill - REMOVED

North Interim Floor - REMOVED

South Interim Floor - REMOVED East wall West wall

West test pit at initial ground

water interface

East test pit at initial ground

water interface

Northeast excavation wall

North center excavation wall

Northwest excavation wall

West center excavation wall

Southwest excavation wall

South center excavation wall

Southeast excvation wall

Constituent of Interest Note mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm)Polynuclear Aromatic Hydrocarbons

Acenaphthene nc, v — — — 25 — — — — — — — — — — —Anthracene nc, v — — — 14 — — — — — — — — — — —Benz[a]anthracene c, nv — — — 1.1 — — — — — — — — — — —Benzo[a]pyrene c, nv — — — <1 (ND) — — — — — — — — — — —Benzo[b]fluoranthene c, nv — — — <1 (ND) — — — — — — — — — — —Benzo[k]fluoranthene c, nv — — — <1 (ND) — — — — — — — — — — —Chrysene c, nv — — — 1.9 — — — — — — — — — — —Dibenz[a,h]anthracene c, nv — — — <1 (ND) — — — — — — — — — — —Fluoranthene nc, nv — — — 2.4 — — — — — — — — — — —Fluorene nc, v — — — 23 — — — — — — — — — — —Indeno[1,2,3-cd]pyrene c, nv — — — <1 (ND) — — — — — — — — — — —Pyrene nc, nv — — — 5.6 — — — — — — — — — — —

Volatile Organic Constituents (VOCs)Acetone c, v ND <2.87 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND)Benzene c, v 3.3 <0.023 (ND) <0.03 (ND) 0.046 <0.03 (ND) <0.03 (ND) <0.03 (ND) <0.03 (ND) <0.03 (ND) <0.03 (ND) <0.03 (ND) <0.03 (ND) <0.03 (ND) <0.03 (ND) <0.03 (ND)Bromobenzene nc, v ND <0.115 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Bromodichloromethane c, v ND <0.115 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Bromoform c, nv ND <0.115 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Bromomethane nc, v ND <0.574 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND)2-Butanone (MEK) nc,v ND <1.15 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND)Butylbenzene, n- nc, v ND <0.115 (ND) 0.59 L <0.5 (ND) L <0.5 (ND) L <0.5 (ND) L <0.5 (ND) L <0.5 (ND) L <0.5 (ND) L <0.5 (ND) L <0.5 (ND) L <0.5 (ND) L <0.5 (ND) L <0.5 (ND) L <0.5 (ND) LButylbenzene, sec- nc, v ND <0.115 (ND) 0.11 0.26 <0.05 (ND) 0.17 0.092 <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Butylbenzene, tert- nc, v ND <0.115 (ND) <0.05 (ND) 0.064 <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Carbon Disulfide nc, v --- --- --- --- --- --- --- --- --- --- --- --- --- --- ---Carbon tetrachloride c, v ND <0.115 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Chlorobenzene nc, v ND <0.115 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Chlorodibromomethane c, nv ND <0.115 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Chloroethane c, v ND <0.115 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND)Chloroform nc, v ND <0.115 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Chloromethane nc, v ND <0.574 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Chlorotoluene, 2- (ortho) nc, v ND <0.115 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Chlorotoluene, 4- (para) nc, v ND <0.115 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)1,2-Dibromo-3-chloropropane c, nv ND <0.574 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Dibromoethane, 1,2- (EDB) c, v ND <0.115 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Dibromomethane (methylene bromide) nc, v ND <0.115 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Dichlorobenzene, 1,2- nc, v ND <0.115 (ND) <0.05 (ND) 0.093 <0.05 (ND) 0.078 <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Dichlorobenzene, 1,3- nc, v ND <0.115 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Dichlorobenzene, 1,4- c, v ND <0.115 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Dichlorodifluoromethane nc, v ND <0.574 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND)Dichloroethane, 1,1- c, v ND <0.115 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Dichloroethane, 1,2- (EDC) c, v ND <0.115 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Dichloroethene, 1,1- nc, v ND <0.115 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Dichloroethene, cis-1,2- nc, v 353 0.311 0.54 11 <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Dichloroethene, trans-1,2- nc, v ND <0.115 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Dichloroethylether c, v ND <0.115 (ND) <0.5 (ND) L <0.5 (ND) L <0.5 (ND) L <0.5 (ND) L <0.5 (ND) L <0.5 (ND) L <0.5 (ND) L <0.5 (ND) L <0.5 (ND) L <0.5 (ND) L <0.5 (ND) L <0.5 (ND) L <0.5 (ND) LDichloromethane (methylene chloride) c, v ND <0.115 (ND) 0.5 lc <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND)Dichloropropane, 1,2- c, v ND <0.115 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)

Dichloropropane, 1,3-2 c, v ND <0.115 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)

Location

Sampled By

Sample IDDate Sampled

Depth Sampled (feet)

Location ID

ENW Page 1 of 7351-05009-06; 3/6/2008

351-05009-06tables(v02 - final).xlsSoil

Table 1 - Summary of Analytical Data, Soil

[Tank Contents] (Overspill over tank) GS01 GS02 GS03 GS04 GS05 GS06 GS07 GS08 GS09 GS10 GS11 GS12 GS13

UST? Product FL-UST-SOIL-1 GS01-NW-4' GS02-SW-4' GS03-EW-4' GS04-WW-4' GS05TPW-INF-9' GS06-TPE-INF-9' GS07-NE Wall-3' GS08-NC Wall-3' GS09-NW Wall-3' GS10-WC Wall-3' GS11-SW Wall-3'GS12-SC Wall-

3'GS13-SE Wall-

3'10/15/07 11/9/07 1/23/08 1/23/08 1/23/08 1/23/08 1/23/08 1/23/08 1/24/08 1/24/08 1/24/08 1/24/08 1/24/08 1/24/08 1/24/08

fluid waste in tank 1 4 4 4 4 9 9 3 3 3 3 3 3 3

Creekside Creekside ENW ENW ENW ENW ENW ENW ENW ENW ENW ENW ENW ENW ENW

Tank Contents - REMOVED

Overspill - REMOVED

North Interim Floor - REMOVED

South Interim Floor - REMOVED East wall West wall

West test pit at initial ground

water interface

East test pit at initial ground

water interface

Northeast excavation wall

North center excavation wall

Northwest excavation wall

West center excavation wall

Southwest excavation wall

South center excavation wall

Southeast excvation wall

Constituent of Interest Note mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm)

Location

Sampled By

Sample IDDate Sampled

Depth Sampled (feet)

Location ID

Dichloropropane, 2,2-2 c, v ND <0.115 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)

Dichloropropene, 1,1-3 c, v ND <0.115 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Dichloropropene, cis-1,3 c, v ND <0.115 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Dichloropropene, trans 1,3 c, v ND <0.115 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Ethylbenzene nc, v 50.9 0.128 0.071 0.89 <0.05 (ND) 0.61 0.29 <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Hexachlorobutadiene c, nv ND <0.46 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND)2-Hexanone ND <1.15 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND)p-Isopropyltoluene ND 2.19 0.086 0.78 0.10 0.34 0.25 <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Methyl t-butyl ether (MtBE) c, v ND <0.115 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Naphthalene nc, v 2020 4.72 2.2 110 2.4 11 24 0.71 <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Pentanone, 4-Methyl-2- (MIK) nc, v ND <0.574 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND)Propylbenzene, iso (Cumene) nc, v ND <0.23 (ND) <0.05 (ND) 0.24 <0.05 (ND) 0.18 0.082 <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Propylbenzene, n- nc, v ND 0.193 0.088 0.65 0.064 0.49 0.24 <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Styrene nc, v ND <0.115 (ND) <0.05 (ND) 0.051 <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Tetrachloroethane, 1,1,1,2- c, v ND <0.115 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Tetrachloroethane, 1,1,2,2- c, v ND <0.115 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Tetrachloroethene (PCE) c, v ND <0.115 (ND) <0.025 (ND) <0.025 (ND) <0.025 (ND) <0.025 (ND) <0.025 (ND) <0.025 (ND) <0.025 (ND) <0.025 (ND) <0.025 (ND) <0.025 (ND) <0.025 (ND) <0.025 (ND) <0.025 (ND)Toluene nc, v 57.9 <0.115 (ND) 0.11 1.0 <0.05 (ND) 0.067 0.13 <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Trichloro-1,2,2-trifluoroethane, 1,1,2- (Freon 113) nc, v — — — — — — — — — — — — — — —Trichlorobenzene, 1,2,3- nc, v ND <0.115 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND)Trichlorobenzene, 1,2,4- nc, v ND <0.115 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND)Trichloroethane, 1,1,1- nc, v ND <0.115 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Trichloroethane, 1,1,2- nc, v ND <0.115 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Trichloroethene (TCE) c, v 217 0.438 0.29 5.2 <0.03 (ND) <0.03 (ND) <0.03 (ND) <0.03 (ND) <0.03 (ND) <0.03 (ND) <0.03 (ND) <0.03 (ND) <0.03 (ND) <0.03 (ND) <0.03 (ND)Trichlorofluoromethane (Freon 11) nc, v ND <0.115 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND)Trichloropropane, 1,2,3- c, v ND <0.115 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Trimethylbenzene, 1,2,4- nc, v 1190 13.4 0.55 17 0.98 6.1 5.3 0.24 <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Trimethylbenzene, 1,3,5- nc, v 245 5.12 0.094 3.2 <0.05 (ND) 0.18 0.97 <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Vinyl chloride c, v ND <0.115 (ND) <0.05 (ND) 0.12 <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND)Xylenes nc, v 1230 2.367 0.44 7.9 0.055 0.91 1.4 <0.15 (ND) <0.15 (ND) <0.15 (ND) <0.15 (ND) <0.15 (ND) <0.15 (ND) <0.15 (ND) <0.15 (ND)

Polychlorinated biphenyls (PCBs)Aroclor 1016 c, nv — <0.0768 (ND) — — — — — — — — — — — — —Aroclor 1221 c, nv — <0.155 (ND) — — — — — — — — — — — — —Aroclor 1232 c, nv — <0.0768 (ND) — — — — — — — — — — — — —Aroclor 1242 c, nv — <0.0768 (ND) — — — — — — — — — — — — —Aroclor 1248 c, nv — <0.0768 (ND) — — — — — — — — — — — — —Aroclor 1254 c, nv — <0.0768 (ND) — — — — — — — — — — — — —Aroclor 1260 c, nv — <0.0768 (ND) — — — — — — — — — — — — —Polychlorinated biphenyls (PCBs) c, nv <1 (ND) — — — — — — — — — — — — — —

MetalsArsenic c, nv <1 (ND) — — — — — — — — — — — — — —Barium nc, nv <1 (ND) — — — — — — — — — — — — — —Cadmium c, nv <1 (ND) — — — — — — — — — — — — — —

Total Chromium (1/6 ratio Cr VI/Cr III)1 c, nv <1 (ND) — — — — — — — — — — — — — —Lead NA, nv 2 — — — — — — — — — — — — — —Mercury nc, nv — — — — — — — — — — — — — — —Selenium nc, nv <1 (ND) — — — — — — — — — — — — — —Silver nc, nv <1 (ND) — — — — — — — — — — — — — —

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Table 1 - Summary of Analytical Data, Soil

[Tank Contents] (Overspill over tank) GS01 GS02 GS03 GS04 GS05 GS06 GS07 GS08 GS09 GS10 GS11 GS12 GS13

UST? Product FL-UST-SOIL-1 GS01-NW-4' GS02-SW-4' GS03-EW-4' GS04-WW-4' GS05TPW-INF-9' GS06-TPE-INF-9' GS07-NE Wall-3' GS08-NC Wall-3' GS09-NW Wall-3' GS10-WC Wall-3' GS11-SW Wall-3'GS12-SC Wall-

3'GS13-SE Wall-

3'10/15/07 11/9/07 1/23/08 1/23/08 1/23/08 1/23/08 1/23/08 1/23/08 1/24/08 1/24/08 1/24/08 1/24/08 1/24/08 1/24/08 1/24/08

fluid waste in tank 1 4 4 4 4 9 9 3 3 3 3 3 3 3

Creekside Creekside ENW ENW ENW ENW ENW ENW ENW ENW ENW ENW ENW ENW ENW

Tank Contents - REMOVED

Overspill - REMOVED

North Interim Floor - REMOVED

South Interim Floor - REMOVED East wall West wall

West test pit at initial ground

water interface

East test pit at initial ground

water interface

Northeast excavation wall

North center excavation wall

Northwest excavation wall

West center excavation wall

Southwest excavation wall

South center excavation wall

Southeast excvation wall

Constituent of Interest Note mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm)

Location

Sampled By

Sample IDDate Sampled

Depth Sampled (feet)

Location ID

Total Petroleum HydrocarbonsGRO nc, v <20 (NP) <20 (NP) <20 (NP) <20 (NP) <20 (NP) <20 (NP) <20 (NP) <20 (NP) — — — — — — —DRO nc, nv — 29900 15,000 38,000 6,000 17,000 170 77 <50 (ND) <50 (ND) <50 (ND) <50 (ND) <50 (ND) <50 (ND) <50 (ND)RRO nc, nv — 7350 2600 y 4900 y 990 y 2400 y <250 (ND) <250 (ND) <250 (ND) <250 (ND) <250 (ND) <250 (ND) <250 (ND) <250 (ND) <250 (ND)Notes:

c = carcinogenicnc = noncarcinogenicv = volatilenv = nonvolatileGRO = gasoline-range organics.DRO = diesel-range organics.RRO = residual-range organics.

mg/Kg = milligram per kilogram or parts per million.

ND = not detected at or above the laboratory method reporting limit shown.NP = not present at or above the laboratory method reporting limit shown (HCID analysis).

— = not analyzed or not applicable.

< = not detected above method reporting limit shown.

< = not detected above method reporting limit shown.

Bolded concentrations exceed either Soil Matrix Cleanup Standards or screening level risk-based concentrations and

1 Lowest Risk-Based Concentration for soil (screening level).

2 Screening-level RBC based on Dichloropropane, 1-2; given the lack of chemical property and toxicological data for these compounds.(Y) indicates analyte not detected, but detection limit is above screening concentration

Green cells in table indicate risk screening is performed on REMOVED materials whose concentrations set an upper limit on impacts remaining after the soil and tank removals.

Brown cells in table indicate soils that have been removed to appropriate waste disposal/recycling locations

(1) = screening-level RBC is for Total Chromium, asssuming a ration of 1:6 CrIII to CrVIy = The pattern of peaks is not typical of motor oil.

L = The reported concentration was generated from a library search.

lc = The presence of the compound indicated is likely due to laboratory contamination.

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Table 1 - Summary of Analytical Data, Soil

Constituent of Interest Note

Acenaphthene nc, vAnthracene nc, vBenz[a]anthracene c, nvBenzo[a]pyrene c, nvBenzo[b]fluoranthene c, nvBenzo[k]fluoranthene c, nvChrysene c, nvDibenz[a,h]anthracene c, nvFluoranthene nc, nvFluorene nc, vIndeno[1,2,3-cd]pyrene c, nvPyrene nc, nv

Acetone c, vBenzene c, vBromobenzene nc, vBromodichloromethane c, vBromoform c, nvBromomethane nc, v2-Butanone (MEK) nc,vButylbenzene, n- nc, vButylbenzene, sec- nc, vButylbenzene, tert- nc, vCarbon Disulfide nc, vCarbon tetrachloride c, vChlorobenzene nc, vChlorodibromomethane c, nvChloroethane c, vChloroform nc, vChloromethane nc, vChlorotoluene, 2- (ortho) nc, vChlorotoluene, 4- (para) nc, v1,2-Dibromo-3-chloropropane c, nvDibromoethane, 1,2- (EDB) c, vDibromomethane (methylene bromide) nc, vDichlorobenzene, 1,2- nc, vDichlorobenzene, 1,3- nc, vDichlorobenzene, 1,4- c, vDichlorodifluoromethane nc, vDichloroethane, 1,1- c, vDichloroethane, 1,2- (EDC) c, vDichloroethene, 1,1- nc, vDichloroethene, cis-1,2- nc, vDichloroethene, trans-1,2- nc, vDichloroethylether c, vDichloromethane (methylene chloride) c, vDichloropropane, 1,2- c, v

Dichloropropane, 1,3-2 c, v

Location

Sampled By

Sample IDDate Sampled

Depth Sampled (feet)

Location IDGS14 GS15 GS16 GS17 GS19 GS20 GS21 GS22 GS23

GS14-ES Wall-3'

GS15-EN Wall-3' GS16-5-BOT GS17-5 GS19-4.5 GS20-5 GS21-7 GS22-5 GS23-6

1/24/08 1/24/08 1/31/08 1/31/08 1/31/08 2/1/08 2/1/08 2/1/08 2/1/08

3 3 5 5 4.5 5 7 5 6

ENW ENW ENW ENW ENW ENW ENW ENW ENW

South portion, east excavation wall

North portion, east excavation wall

Bottom center of additional

excavation, south side

West bottom of south side additional excavation

South wall of additional south

excavation

East wall of additional north

excavation

Center bottom of additional north

excavation

West sidewall of additional north

excavation

North sidewall of north excavation

mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm)Polyaromatic Hydrocarbons

— — — — — — — — — 25 NE 540 NE N— — — — — — — — — 14 NE 21,000 NE N— — — — — — — — — 1.1 NE 0.15 NE Y— — — — — — — — — <1 (ND) NE 0.015 NE (Y)— — — — — — — — — <1 (ND) NE 0.15 NE (Y)— — — — — — — — — <1 (ND) NE 1.5 NE N— — — — — — — — — 1.9 NE 15 NE N— — — — — — — — — <1 (ND) NE 0.015 NE (Y)— — — — — — — — — 2.4 NE 2300 NE N— — — — — — — — — 23 NE 1,000 NE N— — — — — — — — — <1 (ND) NE 0.15 NE (Y)— — — — — — — — — 5.6 NE 1,700 NE N

Volatile Organic Constituents (VOCs)<0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) NE 24 NE N<0.03 (ND) <0.03 (ND) <0.03 (ND) <0.03 (ND) <0.03 (ND) <0.03 (ND) <0.03 (ND) <0.03 (ND) <0.03 (ND) <0.03 (ND) NE 0.0084 NE (Y)<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) NE 1.7 NE N<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) NE 0.0039 NE (Y)<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) NE 0.22 NE N<0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) NE 0.096 NE (Y)<0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) NE 40 NE N

<0.5 (ND) L <0.5 (ND) L <0.5 (ND) L <0.5 (ND) L <0.5 (ND) L <0.5 (ND) L <0.5 (ND) L <0.5 (ND) L <0.5 (ND) L <0.5 (ND) NE 210 NE N<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) 0.17 NE 160 NE N<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) NE 41 NE N

--- --- --- --- --- --- --- --- --- <0 (ND) NE 31 NE N<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) NE 0.011 NE (Y)<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) NE 7.6 NE N<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) NE 0.016 NE (Y)<0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) NE 0.061 NE (Y)<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) NE 0.11 NE N<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) NE 1.9 NE N<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) NE 6.5 NE N<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) NE 6.5 NE N<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) NE 0.0039 NE (Y)<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) NE 0.000073 NE (Y)<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) NE 3.6 NE N<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) 0.078 NE 70 NE N<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) NE 35 NE N<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) NE 0.097 NE N<0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) NE 24 NE N<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) NE 0.002 NE (Y)<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) NE 0.0012 NE (Y)<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) NE 11 NE N<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) 0.14 <0.05 (ND) 0.14 NE 1 NE N<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) NE 2.5 NE N<0.5 (ND) L <0.5 (ND) L <0.5 (ND) L <0.5 (ND) L <0.5 (ND) L <0.5 (ND) L <0.5 (ND) L <0.5 (ND) L <0.5 (ND) L <0.5 (ND) NE 0.000087 NE (Y)<0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) NE 0.035 NE (Y)<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) NE 0.0033 NE (Y)<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) NE 0.0033 NE (Y)

TRUE OR Y FALSE OR N

COPC?

mg/Kg (ppm)

Background Concentrations

(metals)

Maximum Soil Concetnration

(remaining soil)

Soil Matrix Cleanup Level

ODEQs Screening-level

RBCs (Soil)

ENW Page 4 of 7351-05009-06; 3/6/2008

351-05009-06tables(v02 - final).xlsSoil

Table 1 - Summary of Analytical Data, Soil

Constituent of Interest Note

Location

Sampled By

Sample IDDate Sampled

Depth Sampled (feet)

Location ID

Dichloropropane, 2,2-2 c, v

Dichloropropene, 1,1-3 c, vDichloropropene, cis-1,3 c, vDichloropropene, trans 1,3 c, vEthylbenzene nc, vHexachlorobutadiene c, nv2-Hexanonep-Isopropyltoluene Methyl t-butyl ether (MtBE) c, vNaphthalene nc, vPentanone, 4-Methyl-2- (MIK) nc, vPropylbenzene, iso (Cumene) nc, vPropylbenzene, n- nc, vStyrene nc, vTetrachloroethane, 1,1,1,2- c, vTetrachloroethane, 1,1,2,2- c, vTetrachloroethene (PCE) c, vToluene nc, vTrichloro-1,2,2-trifluoroethane, 1,1,2- (Freon 113) nc, vTrichlorobenzene, 1,2,3- nc, vTrichlorobenzene, 1,2,4- nc, vTrichloroethane, 1,1,1- nc, vTrichloroethane, 1,1,2- nc, vTrichloroethene (TCE) c, vTrichlorofluoromethane (Freon 11) nc, vTrichloropropane, 1,2,3- c, vTrimethylbenzene, 1,2,4- nc, vTrimethylbenzene, 1,3,5- nc, vVinyl chloride c, vXylenes nc, v

Aroclor 1016 c, nvAroclor 1221 c, nvAroclor 1232 c, nvAroclor 1242 c, nvAroclor 1248 c, nvAroclor 1254 c, nvAroclor 1260 c, nvPolychlorinated biphenyls (PCBs) c, nv

Arsenic c, nvBarium nc, nvCadmium c, nv

Total Chromium (1/6 ratio Cr VI/Cr III)1 c, nvLead NA, nvMercury nc, nvSelenium nc, nvSilver nc, nv

GS14 GS15 GS16 GS17 GS19 GS20 GS21 GS22 GS23

GS14-ES Wall-3'

GS15-EN Wall-3' GS16-5-BOT GS17-5 GS19-4.5 GS20-5 GS21-7 GS22-5 GS23-6

1/24/08 1/24/08 1/31/08 1/31/08 1/31/08 2/1/08 2/1/08 2/1/08 2/1/08

3 3 5 5 4.5 5 7 5 6

ENW ENW ENW ENW ENW ENW ENW ENW ENW

South portion, east excavation wall

North portion, east excavation wall

Bottom center of additional

excavation, south side

West bottom of south side additional excavation

South wall of additional south

excavation

East wall of additional north

excavation

Center bottom of additional north

excavation

West sidewall of additional north

excavation

North sidewall of north excavation

mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm)

TRUE OR Y FALSE OR N

COPC?

mg/Kg (ppm)

Background Concentrations

(metals)

Maximum Soil Concetnration

(remaining soil)

Soil Matrix Cleanup Level

ODEQs Screening-level

RBCs (Soil)

<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) NE 0.0033 NE (Y)<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) NE 0.007 NE (Y)<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) NE 0.007 NE (Y)<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) NE 0.007 NE (Y)<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) 0.61 NE 160 NE N<0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) NE 6.2 NE N<0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) NE NE NE N<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) 0.34 NE NE NE N<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) NE 0.082 NE N<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) 0.061 <0.05 (ND) 0.066 0.087 24 NE 3.8 NE Y<0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) NE 89 NE N<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) 0.18 NE 440 NE N<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) 0.49 NE 52 NE N<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) NE 460 NE N<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) NE 0.012 NE (Y)<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) NE 0.0016 NE (Y)<0.025 (ND) <0.025 (ND) <0.025 (ND) <0.025 (ND) <0.025 (ND) <0.025 (ND) <0.025 (ND) <0.025 (ND) <0.025 (ND) <0.025 (ND) NE 0.0053 NE (Y)<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) 0.13 NE 140 NE N

— — — — — — — — — — NE 8100 NE NA<0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) NE 3.9 NE N<0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) <0.1 (ND) NE 3.9 NE N<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) NE 37 NE N<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) NE 0.48 NE N<0.03 (ND) <0.03 (ND) <0.03 (ND) <0.03 (ND) <0.03 (ND) <0.03 (ND) <0.03 (ND) <0.03 (ND) <0.03 (ND) <0.03 (ND) NE 0.0017 NE (Y)<0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) <0.5 (ND) NE 72 NE N<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) NE 0.000049 NE (Y)<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) 6.1 NE 14 NE N<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) 0.97 NE 3.1 NE N<0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) <0.05 (ND) NE 0.00048 NE (Y)<0.15 (ND) <0.15 (ND) <0.15 (ND) <0.15 (ND) <0.15 (ND) <0.15 (ND) <0.15 (ND) <0.15 (ND) <0.15 (ND) 1.4 NE 25 NE N

Polychlorinated biphenyls (PCBs)— — — — — — — — — <0.0768 (ND) NE 3.9 NE N— — — — — — — — — <0.155 (ND) NE 0.22 NE N— — — — — — — — — <0.0768 (ND) NE 0.22 NE N— — — — — — — — — <0.0768 (ND) NE 0.22 NE N— — — — — — — — — <0.0768 (ND) NE 0.22 NE N— — — — — — — — — <0.0768 (ND) NE 0.22 NE N— — — — — — — — — <0.0768 (ND) NE 0.22 NE N— — — — — — — — — <1 (ND) NE 0.22 NE (Y)

Metals— — — — — — — — — <1 (ND) NE 0.39 7 FALSE— — — — — — — — — <1 (ND) NE 5,400 NE FALSE— — — — — — — — — <1 (ND) NE 1,500 1 FALSE— — — — — — — — — <1 (ND) NE 210 42 FALSE— — — — — — — — — 2 NE 30 17 FALSE— — — — — — — — — — NE 23 0.07 NA— — — — — — — — — <1 (ND) NE 0.3 NE FALSE— — — — — — — — — <1 (ND) NE 390 1 FALSE

ENW Page 5 of 7351-05009-06; 3/6/2008

351-05009-06tables(v02 - final).xlsSoil

Table 1 - Summary of Analytical Data, Soil

Constituent of Interest Note

Location

Sampled By

Sample IDDate Sampled

Depth Sampled (feet)

Location ID

GRO nc, vDRO nc, nvRRO nc, nvNotes:

c = carcinogenicnc = noncarcinogenicv = volatilenv = nonvolatileGRO = gasoline-range organics.DRO = diesel-range organics.RRO = residual-range organics.

mg/Kg = milligram per kilogram or parts per million.

ND = not detected at or above the laboratory method reporting limit shown.NP = not present at or above the laboratory method reporting limit shown (HCID analysis).

— = not analyzed or not applicable.

< = not detected above method reporting limit shown.

< = not detected above method reporting limit shown.

Bolded concentrations exceed either Soil Matrix Cleanup Standards or screening level risk-based concentrations and

1 Lowest Risk-Based Concentration for soil (screening level).

2 Screening-level RBC based on Dichloropropane, 1-2; given the lack of chemical property and toxicological data for these compounds.(Y) indicates analyte not detected, but detection limit is above screening concentration

Green cells in table indicate risk screening is performed on REMOVED materials whose concentrations set an upper limit on impacts remaining after the soil and tank removals.

Brown cells in table indicate soils that have been removed to appropriate waste disposal/recycling locations

(1) = screening-level RBC is for Total Chromium, asssuming a ration of 1:6 CrIII to CrVIy = The pattern of peaks is not typical of motor oil.

L = The reported concentration was generated from a library search.

lc = The presence of the compound indicated is likely due to laboratory contamination.

GS14 GS15 GS16 GS17 GS19 GS20 GS21 GS22 GS23

GS14-ES Wall-3'

GS15-EN Wall-3' GS16-5-BOT GS17-5 GS19-4.5 GS20-5 GS21-7 GS22-5 GS23-6

1/24/08 1/24/08 1/31/08 1/31/08 1/31/08 2/1/08 2/1/08 2/1/08 2/1/08

3 3 5 5 4.5 5 7 5 6

ENW ENW ENW ENW ENW ENW ENW ENW ENW

South portion, east excavation wall

North portion, east excavation wall

Bottom center of additional

excavation, south side

West bottom of south side additional excavation

South wall of additional south

excavation

East wall of additional north

excavation

Center bottom of additional north

excavation

West sidewall of additional north

excavation

North sidewall of north excavation

mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm) mg/Kg (ppm)

TRUE OR Y FALSE OR N

COPC?

mg/Kg (ppm)

Background Concentrations

(metals)

Maximum Soil Concetnration

(remaining soil)

Soil Matrix Cleanup Level

ODEQs Screening-level

RBCs (Soil)

Total Petroleum Hydrocarbons— — — — — — — — — <20 (NP) 80 26 NE FALSE

<50 (ND) <50 (ND) <50 (ND) <50 (ND) <50 (ND) <50 (ND) <50 (ND) <50 (ND) <50 (ND) 17,000 500 2,800 NE TRUE

<250 (ND) <250 (ND) <250 (ND) <250 (ND) <250 (ND) <250 (ND) <250 (ND) <250 (ND) <250 (ND) 2,400 500 NE NE TRUE

ENW Page 6 of 7351-05009-06; 3/6/2008

351-05009-06tables(v02 - final).xlsSoil

Table 2 - Summary of Analytical Data, Reconnaissance Ground Water

USTEX-E PW-0801251/23/08 1/25/08MAA ENW

Tank Excavation Tank Excavation

Constituent of Interest NotePolynuclear Aromatic Hydrocarbons

Acenaphthene nc, v — 5.1 J 5.1 J 370 NE NAnthracene nc, v — 0.84 0.84 1800 NE NBenz[a]anthracene c, nv — <0.05 (ND) <0.05 (ND) 0.029 NE (Y)Benzo[a]pyrene c, nv — <0.05 (ND) <0.05 (ND) 0.0029 NE (Y)Benzo[b]fluoranthene c, nv — <0.05 (ND) <0.05 (ND) 0.029 NE (Y)Benzo[k]fluoranthene c, nv — <0.05 (ND) <0.05 (ND) 0.29 NE NChrysene c, nv — <0.05 (ND) <0.05 (ND) 2.9 NE NDibenz[a,h]anthracene c, nv — <0.05 (ND) <0.05 (ND) 0.0029 NE (Y)Fluoranthene nc, nv — 0.057 0.057 1500 NE NFluorene nc, v — 4.2 J 4.2 J 240 NE NIndeno[1,2,3-cd]pyrene c, nv — <0.05 (ND) <0.05 (ND) 0.029 NE (Y)Pyrene nc, nv — 0.11 0.11 1100 NE N

Volatile Organic Constituents (VOCs)Acetone c, v <10 (ND) — <10 (ND) 5500 NE NBenzene c, v <1 (ND) — <1 (ND) 0.35 NE (Y)Bromobenzene nc, v <1 (ND) — <1 (ND) 23 NE NBromodichloromethane c, v <1 (ND) — <1 (ND) 0.18 NE (Y)Bromoform c, nv <1 (ND) — <1 (ND) 7.2 NE NBromomethane nc, v <1 (ND) — <1 (ND) 8.5 NE N2-Butanone (MEK) nc,v <10 (ND) — <10 (ND) 7100 NE NButylbenzene, n- nc, v <1 (ND) — <1 (ND) 240 NE NButylbenzene, sec- nc, v 1.0 — 1.0 240 NE NButylbenzene, tert- nc, v <1 (ND) — <1 (ND) 61 NE NCarbon Disulfide nc, v <1 (ND) — <1 (ND) 1000 NE NCarbon tetrachloride c, v <1 (ND) — <1 (ND) 0.17 NE (Y)Chlorobenzene nc, v <1 (ND) — <1 (ND) 110 NE NChlorodibromomethane c, nv <1 (ND) — <1 (ND) 0.68 NE (Y)Chloroethane c, v <1 (ND) — <1 (ND) 3.9 NE NChloroform nc, v <1 (ND) — <1 (ND) 6.2 NE NChloromethane nc, v <1 (ND) — <1 (ND) 160 NE NChlorotoluene, 2- (ortho) nc, v <1 (ND) — <1 (ND) 120 NE NChlorotoluene, 4- (para) nc, v <1 (ND) — <1 (ND) 120 NE N1,2-Dibromo-3-chloropropane c, nv <1 (ND) — <1 (ND) 0.071 NE (Y)Dibromoethane, 1,2- (EDB) c, v <1 (ND) — <1 (ND) 0.0057 NE (Y)Dibromomethane (methylene bromide) nc, v <1 (ND) — <1 (ND) 61 NE NDichlorobenzene, 1,2- nc, v <1 (ND) — <1 (ND) 370 NE NDichlorobenzene, 1,3- nc, v <1 (ND) — <1 (ND) 180 NE NDichlorobenzene, 1,4- c, v <1 (ND) — <1 (ND) 0.51 NE (Y)Dichlorodifluoromethane nc, v <1 (ND) — <1 (ND) 390 NE NDichloroethane, 1,1- c, v <1 (ND) — <1 (ND) 0.13 NE (Y)Dichloroethane, 1,2- (EDC) c, v <1 (ND) — <1 (ND) 0.13 NE (Y)Dichloroethene, 1,1- nc, v <1 (ND) — <1 (ND) 1200 NE NDichloroethene, cis-1,2- nc, v 3.4 — 3.4 61 NE NDichloroethene, trans-1,2- nc, v <1 (ND) — <1 (ND) 110 NE NDichloroethylether c, v <1 (ND) — <1 (ND) 0.01 NE (Y)Dichloromethane (methylene chloride) c, v <1 (ND) — <1 (ND) 4.1 NE NDichloropropane, 1,2- c, v <1 (ND) — <1 (ND) 0.17 NE (Y)Dichloropropane, 1,3-2 c, v <1 (ND) — <1 (ND) 0.17 NE (Y)Dichloropropane, 2,2-2 c, v <1 (ND) — <1 (ND) 0.17 NE (Y)Dichloropropene, 1,1-3 c, v <1 (ND) — <1 (ND) 0.37 NE (Y)Dichloropropene, cis-1,3 c, v <1 (ND) — <1 (ND) 0.37 NE (Y)Dichloropropene, trans 1,3 c, v <1 (ND) — <1 (ND) 0.37 NE (Y)Ethylbenzene nc, v 6.1 — 6.1 1300 NE NHexachlorobutadiene c, nv <1 (ND) — <1 (ND) 4 NE N2-Hexanone <10 (ND) — <10 (ND) NE NE Np-Isopropyltoluene <2.4 (ND) — <2.4 (ND) NE NE NMethyl t-butyl ether (MtBE) c, v <1 (ND) — <1 (ND) 11 NE NNaphthalene nc, v 100 75 100 6.2 NE YPentanone, 4-Methyl-2- (MIK) nc, v <10 (ND) — <10 (ND) 2000 NE NPropylbenzene, iso (Cumene) nc, v 1.7 — <1.7 (ND) 660 NE NPropylbenzene, n- nc, v 3.8 — 3.80 61 NE NStyrene nc, v <1 (ND) — <1 (ND) 1600 NE NTetrachloroethane, 1,1,1,2- c, v <1 (ND) — <1 (ND) 0.44 NE (Y)Tetrachloroethane, 1,1,2,2- c, v <1 (ND) — <1 (ND) 0.057 NE (Y)Tetrachloroethene (PCE) c, v <1 (ND) — <1 (ND) 0.091 NE (Y)Toluene nc, v 2.1 — 2.1 2300 NE NTrichloro-1,2,2-trifluoroethane, 1,1,2- (Freon 113) nc, v <1 (ND) — <1 (ND) 59000 NTrichlorobenzene, 1,2,3- nc, v <1 (ND) — <1 (ND) 7.9 NE NTrichlorobenzene, 1,2,4- nc, v <1 (ND) — <1 (ND) 7.9 NE NTrichloroethane, 1,1,1- nc, v <1 (ND) — <1 (ND) 840 NE NTrichloroethane, 1,1,2- nc, v <1 (ND) — <1 (ND) 24 NE NTrichloroethene (TCE) c, v 2.4 — 2.4 0.029 NE YTrichlorofluoromethane (Freon 11) nc, v <1 (ND) — <1 (ND) 1300 NE NTrichloropropane, 1,2,3- c, v <1 (ND) — <1 (ND) 0.0016 NE (Y)Trimethylbenzene, 1,2,4- nc, v 67 — 67 12 NE YTrimethylbenzene, 1,3,5- nc, v 8.9 — 8.9 12 NE NVinyl chloride c, v <0.2 (ND) — <0.2 (ND) 0.024 NE (Y)Xylenes nc, v 25 — 25 210 NE N

Total Petroleum HydrocarbonsGRO nc, v — — — 100 NE —DRO nc, nv 57000 — 57,000 88 NE YRRO nc, nv 9000 y — 9,000 290 NE YNotes:

— = not analyzed or not applicable.

NE = not established.

c = carcinogenicnc = noncarcinogenicv = volatilenv = nonvolatileGRO = gasoline-range organics.DRO = diesel-range organics.RRO = residual-range organics.

J = inidicates the internal standard associated with the analyte is out of control limits; the reported concentration is an estimate.y = the pattern of peaks is not indicative of motor oil.

ug/L = micrograms per Liter or parts per billion (ppb).

Bolded concentrations exceed either Soil Matrix Cleanup Standards or screening level risk-based concentrations and background concentrations, as applicable.1 Lowest Risk-Based Concentration for soil (screening level).

(Y) indicates analyte not detected, but detection limit is above screening concentration.

2 Screening-level RBC based on Dichloropropane, 1-2; given the lack of chemical property and toxicological data for these compounds.

TRUE OR Y FALSE OR N

COPC?

ND = not detected at or above laboratory method reporting

< = not detected above method reporting limit shown.

Sample IDDate Sampled

Background Concentrations

(metals)2Sampled By

µg/L (ppb)

Screening-level RBC (GW)1

Maximum Ground Water Concetnration

Location

ENW Page 7 of 7351-05009-06; 3/6/2008

351-05009-06tables(v02 - final).xlsWater

Source: USGS Topographic Map, 7.5-Minute Sherwood Quadrangle, 1985

Project No. 351-05009-06

Former Frontier Leather Company Site 15104 SW Oregon Street Sherwood, Oregon

Site Vicinity Map Figure No.

1

SW OREGON STREET

SOUTHERN PACIFIC R

AILROAD

FORMER FRONTIER LEATHER FACILITY

FORMER BAY 2

FORMER PIT

FORMER PITS

FOR

ME

R

SU

MP

LOCATION OF FORMER ARSENIC-IMPACTED SOIL PILE

SITE PLAN

FIGURE 2

0

N

FORMER FRONTIER LEATHER COMPANY15104 SW OREGON STREET

SHERWOOD, OREGON

30 60

PO BOX 80747, PORTLAND, OREGON 97280-1747(503)452-5561 Fax(503)452-7669

FORMER PIT

FORMER PI

FOR

ME

R

SU

MP

Sample ID GS01-NW-4'Depth (ft) 4

DRO 15000RRO 2600TCE 0.29

UNITS mg/Kg

Sample ID GS02-SW-4'Depth (ft) 4

DRO 38000RRO 4900TCE 5.2

UNITS mg/Kg

Sample ID GS03-EW-4'Depth (ft) 4

DRO 6000RRO 990TCE <0.03 (ND)

UNITS mg/Kg

Sample ID GS04-WW-4'Depth (ft) 4

DRO 17000RRO 2400TCE <0.03 (ND)

UNITS mg/Kg

Sample ID GS05TPW-INF-9'Depth (ft) 9

DRO 170RRO <250 (ND)TCE <0.03 (ND)

UNITS mg/Kg

Sample ID GS06-TPE-INF-9'Depth (ft) 9

DRO 77RRO <250 (ND)TCE <0.03 (ND)

UNITS mg/Kg

Sample ID GS07-NE Wall-3'Depth (ft) 3

DRO <50 (ND)RRO <250 (ND)TCE <0.03 (ND)

UNITS mg/Kg

Sample ID GS08-NC Wall-3'Depth (ft) 3

DRO <50 (ND)RRO <250 (ND)TCE <0.03 (ND)

UNITS mg/Kg

Sample ID GS09-NW Wall-3'Depth (ft) 3

DRO <50 (ND)RRO <250 (ND)TCE <0.03 (ND)

UNITS mg/Kg

Sample ID GS10-WC Wall-3'Depth (ft) 3

DRO <50 (ND)RRO <250 (ND)TCE <0.03 (ND)

UNITS mg/Kg

Sample ID GS11-SW Wall-3'Depth (ft) 3

DRO <50 (ND)RRO <250 (ND)TCE <0.03 (ND)

UNITS mg/Kg

Sample ID GS12-SC Wall-3'Depth (ft) 3

DRO <50 (ND)RRO <250 (ND)TCE <0.03 (ND)

UNITS mg/Kg

Sample ID GS13-SE Wall-3'Depth (ft) 3

DRO <50 (ND)RRO <250 (ND)TCE <0.03 (ND)

UNITS mg/Kg

Sample ID GS14-ES Wall-3'Depth (ft) 3

DRO <50 (ND)RRO <250 (ND)TCE <0.03 (ND)

UNITS mg/Kg

Sample ID GS15-EN Wall-3'Depth (ft) 3

DRO <50 (ND)RRO <250 (ND)TCE <0.03 (ND)

UNITS mg/Kg

SAMPLE LOCATION DIAGRAM(SOIL DATA AS OF 1/24/2008)

FIGURE 3

0

N

15 30

PO BOX 80747, PORTLAND, OREGON 97280-1747(503)452-5561 Fax(503)452-7669

FORMER FRONTIER LEATHER COMPANY15104 SW OREGON STREET

SHERWOOD, OREGON

Sample ID GS16-5-BOTDepth (ft) 5

DRO <50 (ND)RRO <250 (ND)

Trichloroethene <0.03 (ND)UNITS mg/Kg

Sample ID GS17-5Depth (ft) 5

DRO <50 (ND)RRO <250 (ND)

Trichloroethene <0.03 (ND)UNITS mg/Kg

Sample ID GS19-4.5Depth (ft) 4.5

DRO <50 (ND)RRO <250 (ND)

Trichloroethene <0.03 (ND)UNITS mg/Kg

Sample ID GS20-5Depth (ft) 5

DRO <50 (ND)RRO <250 (ND)

Trichloroethene <0.03 (ND)UNITS mg/Kg

Sample ID GS21-7Depth (ft) 7

DRO <50 (ND)RRO <250 (ND)

Trichloroethene <0.03 (ND)UNITS mg/Kg

Sample ID GS22-5Depth (ft) 5

DRO <50 (ND)RRO <250 (ND)

Trichloroethene <0.03 (ND)UNITS mg/Kg

Sample ID GS23-6Depth (ft) 6

DRO <50 (ND)RRO <250 (ND)

Trichloroethene <0.03 (ND)UNITS mg/Kg

GS18(NOT ANALYZED)

SAMPLE LOCATION DIAGRAM(SOIL DATA AS OF 2/1/2008)

FIGURE 4

0

N

10 20

PO BOX 80747, PORTLAND, OREGON 97280-1747(503)452-5561 Fax(503)452-7669

FORMER FRONTIER LEATHER COMPANY15104 SW OREGON STREET

SHERWOOD, OREGON

FORMER PIT

FORMER PI

FOR

ME

R

SU

MP

Sample ID USTEX-E DW-080125Date Sampled 1/23/08 1/25/08

Sampled By MAA ENW

LocationConstituent of Interest

Polyaromatic HydrocarbonsAcenaphthene --- 5.1Anthracene --- 0.84Fluoranthene --- 0.057Fluorene --- 4.2Pyrene --- 0.11

Volatile Organic Constituents (VOCs)Butylbenzene, sec- 1.0 ---Dichloroethene, cis-1,2- 3.4 ---Ethylbenzene 6.1 ---Naphthalene 100 75Propylbenzene, iso (Cumene) 1.7 ---Propylbenzene, n- 3.8 ---Toluene 2.1 ---Trichloroethene 2.4 ---Trimethylbenzene, 1,2,4- 67 ---Trimethylbenzene, 1,3,5- 8.9 ---Xylenes 25 ---

Total Petroleum HydrocarbonsDRO 57000 ---RRO 9000 y ---

Tank excavation

ug/L

SAMPLE LOCATION DIAGRAM(GROUND WATER DATA)

FIGURE 5

0

N

15 30

PO BOX 80747, PORTLAND, OREGON 97280-1747(503)452-5561 Fax(503)452-7669

FORMER FRONTIER LEATHER COMPANY15104 SW OREGON STREET

SHERWOOD, OREGON

FORME

FORMER PI

FOR

ME

R

SU

MP

Sample ID GS16-5-BOTDepth (ft) 5

DRO <50 (ND)RRO <250 (ND)

Trichloroethene <0.03 (ND)UNITS mg/Kg

Sample ID GS17-5Depth (ft) 5

DRO <50 (ND)RRO <250 (ND)

Trichloroethene <0.03 (ND)UNITS mg/Kg

Sample ID GS19-4.5Depth (ft) 4.5

DRO <50 (ND)RRO <250 (ND)

Trichloroethene <0.03 (ND)UNITS mg/Kg

Sample ID GS20-5Depth (ft) 5

DRO <50 (ND)RRO <250 (ND)

Trichloroethene <0.03 (ND)UNITS mg/Kg

Sample ID GS21-7Depth (ft) 7

DRO <50 (ND)RRO <250 (ND)

Trichloroethene <0.03 (ND)UNITS mg/Kg

Sample ID GS22-5Depth (ft) 5

DRO <50 (ND)RRO <250 (ND)

Trichloroethene <0.03 (ND)UNITS mg/Kg

Sample ID GS23-6Depth (ft) 6

DRO <50 (ND)RRO <250 (ND)

Trichloroethene <0.03 (ND)UNITS mg/Kg

Sample ID GS03-EW-4'Depth (ft) 4

DRO 6000RRO 990TCE <0.03 (ND)

UNITS mg/Kg

Sample ID GS04-WW-4'Depth (ft) 4

DRO 17000RRO 2400TCE <0.03 (ND)

UNITS mg/Kg

Sample ID GS05TPW-INF-9'Depth (ft) 9

DRO 170RRO <250 (ND)TCE <0.03 (ND)

UNITS mg/Kg Sample ID GS06-TPE-INF-9'Depth (ft) 9

DRO 77RRO <250 (ND)TCE <0.03 (ND)

UNITS mg/Kg

Sample ID GS07-NE Wall-3'Depth (ft) 3

DRO <50 (ND)RRO <250 (ND)TCE <0.03 (ND)

UNITS mg/Kg

Sample ID GS08-NC Wall-3'Depth (ft) 3

DRO <50 (ND)RRO <250 (ND)TCE <0.03 (ND)

UNITS mg/Kg

Sample ID GS09-NW Wall-3'Depth (ft) 3

DRO <50 (ND)RRO <250 (ND)TCE <0.03 (ND)

UNITS mg/Kg

Sample ID GS10-WC Wall-3'Depth (ft) 3

DRO <50 (ND)RRO <250 (ND)TCE <0.03 (ND)

UNITS mg/Kg

Sample ID GS11-SW Wall-3'Depth (ft) 3

DRO <50 (ND)RRO <250 (ND)TCE <0.03 (ND)

UNITS mg/Kg

Sample ID GS13-SE Wall-3'Depth (ft) 3

DRO <50 (ND)RRO <250 (ND)TCE <0.03 (ND)

UNITS mg/Kg

Sample ID GS14-ES Wall-3'Depth (ft) 3

DRO <50 (ND)RRO <250 (ND)TCE <0.03 (ND)

UNITS mg/Kg

Sample ID GS15-EN Wall-3'Depth (ft) 3

DRO <50 (ND)RRO <250 (ND)TCE <0.03 (ND)

UNITS mg/Kg

Sample ID GS12-SC Wall-3'Depth (ft) 3

DRO <50 (ND)RRO <250 (ND)TCE <0.03 (ND)

UNITS mg/Kg

SAMPLE LOCATION DIAGRAM(SOIL DATA, IN SITU)

FIGURE 6

0

N

10 20

PO BOX 80747, PORTLAND, OREGON 97280-1747(503)452-5561 Fax(503)452-7669

FORMER FRONTIER LEATHER COMPANY15104 SW OREGON STREET

SHERWOOD, OREGON

Former Frontier Leather Co.Sherwood, Oregon

Figure 7

PRIMARY SOURCES

PRIMARY RELEASE

MECHANISMSTRANSPORT

MECHANISMS TERTIARY SOURCES

EXPOSURE ROUTES

Current Future Current Future Current Future Current Future Current Future

/ / / / / / / / / // / / / / / / / / // / / / / / / / / /

/ / / / / - + + + +/ / / / / - + + + +/ / / / / - + + + +

/ / / / / + + + + +

/ / / / / + + + + +

/ / / / / - - - - -/ / / / / - - - - -

/ / / / / - - - - -/ / / / / - - - - -

/ / / / / + + + + +

/ / / / / + + + + +

/ / / / / - + + + +/ / / / / - + + + +

/ / / / / - - - - -

Notes:

+ This route is a primary source of exposure./ Not applicable because of lack of complete pathway or receptors. No soil or ground-water COPCs identified- There is no exposure by this route.

(1) Surface water contamination is not covered in RBDM.

POTENTIAL RECEPTORS

SECONDARY SOURCES

Residential (single-family) Occupational Excavation / Trench

WorkerResidential

(Urban)Construction

Worker

UST Leaks, overspill

Surface Soils (< 3 feet)

Subsurface Soils (> 3 feet)

Groundwater(shallow)

DischargeSurface Water (1)

Dermal ContactIngestion

Particles/Volatiles Air (Outdoor) Inhalation

VolatilizationAir (Indoor)

Air (Outdoor)

Inhalation

Inhalation

Dermal ContactIngestion

Dermal ContactIngestion

Particles/Volatiles Air (Outdoor) Inhalation

Leaching Groundwater Ingestion

Inhalation

VolatilizationAir (Indoor)

Air (Outdoor)

Inhalation

Inhalation

Vol. at the TapIngestion

Dermal ContactInhalationVolatilization Air (Excavation)

Air (Indoor)

Vol. Inhalation

IngestionGroundwater(deep)

Conceptual Site ModelFebruary 2008

APPENDIX A ODEQ UST REGISTRATION, DECOMMISSIONING NOTIFICATION, CHECKLIST AND REPORT

OREGON DEPARTMENT OF ENVIRONMENTAL QUALITY UNDERGROUND STORAGE TANK PROGRAM

GENERAL PERMIT REGISTRATION FORMTO DECOMMISSION EXISTING UNREGISTERED TANKS

• This form should only be used to register existing tanks that have never been reported to DEQ andthat will be decommissioned by permanent closure.

• To register existing tanks you must submit pages 4 through 8 of this registration form and a checkfor the amount of the required registration fee. See page 4 to calculate the required fee.

• If you are registering more than five (5) tanks, please make a copy of pages 7 and 8. List theadditional tanks on the copy.

• You must submit an UST Decommissioning/Change-in-Service 30-Day Notice to your local DEQRegional Office a minimum of 30 days before the start of decommissioning work. See page 3 foroffice locations.

• You must call your regional office to receive authorization to proceed with the decommissioning 72hours prior to beginning work. See page 3 for phone numbers.

• You must submit the Underground Storage Tank Decommissioning Checklist and Site AssessmentReport to your local Regional Office within 30 days following completion of the tank decommissioning or change-in-service regardless if cleanup work is

ongoing.

CHECKLIST

1. Be sure signatures are provided for the tank owner, permittee and property owner,even where one person fills all three

roles.2. Complete the registration form for all tanks being registered at the facility.3. Make copies for your records.4. Enclose your check payable to:

Oregon Department of Environmental Quality 5. Please return the general permit registration form and applicable registration fee to:

Department of Environmental Quality Business Office 811 SW Sixth Avenue Portland, Oregon 97204

June 2005 Page 1 of 8 DEQ-05-LQ-019

INSTRUCTION PAGE

DESCRIPTION OF GENERAL PERMIT PROGRAM

In lieu of issuing individual permits, Oregon's UST permitting program has adopted a general permit by rule todecommission USTs that identifies the conditions and requirements for temporary and permanent closure or completing achange-in-service. By signing the registration forms, you are certifying that you will comply with all the conditions andrequirements of the general permit to decommission USTs.

DEFINITIONS

Facility - the place where the tank is located.

Decommission - means temporary or permanent closure, including temporary or permanent removal from operation, fillingin-place, removal from the ground or change-in-service to non-regulated status.

Owner - means a person who currently owns an UST or owned an UST during the tanks operational life. If registered withthe Secretary of State, Corporations Division, the UST owner is the legal business name.

Permittee - means the owner or person designated by the owner, who is in control or has responsibility for daily UST systemoperation and maintenance, financial responsibility and UST operator training requirements under a general permit pursuantto OAR 340-150-0160 through 340-150-0168. If registered with the Secretary of State, Corporations Division, the permitteeis the legal business name. The permittee is mailed the annual compliance fee invoice.

Property owner - means the legal owner of the real property on which an UST is located (the name that appears on theCounty deed records).

GENERAL PERMIT REGISTRATION FORM

1. Please fill in the name, address and phone number of the facility. If this facility is registered with DEQ please includethe DEQ facility number.

2. Please fill in the number of tanks in the space provided in the general permit registration fee section. For existing tanksnot previously registered, back fees are required by OAR 340-150-0110 (5). Calculate the total amount due.

3. Please fill in the tank owner's legal name, address and phone number. The legal name is the name of the tank owner asfiled with the Secretary of State, Corporations Division, if applicable. The tank owner must sign the registration form.

4. The tank owner can designate a permittee for each facility. Please ask the permittee in charge of the facility to fill in theirlegal name, address and phone number. The legal name is the name of the permittee as filed with the Secretary ofState, Corporations Division, if applicable. The permittee must sign the registration form.

5. Please fill in the property owner's name, address and phone number. The property owner's name should be the name inthe county deed records. The property owner must sign the registration form.

6. There must be three signatures for each completed registration form - the tank owner, permittee and property owner. IF

ONE PERSON FILLS ALL THREE ROLES, THAT PERSON MUST SIGN THREE TIMES.

7. Complete all sections and pages of the form.

LICENSED SERVICE PROVIDERS AND SUPERVISORS

ORS 466.750 and OAR 340 - Division 160 requires that licensed service providers perform tank decommission work. Ifcontaminated soil is discovered during decommissioning, ORS 466.750 and OAR 340 - Division 162 requires that licensedservice providers perform soil matrix cleanup work. During certain critical phases as specified in the rules, a licensed supervisor must be present on site to monitor the work. A list of licensed service providers and supervisors is available uponrequest by calling (503) 229-6652 or toll-free in Oregon 1-800-742-7878 (a message answering machine). NOTE: AN OWNER OR PERMITTEE MAY PERFORM UST SERVICES ONLY IF THEY HAVE TAKEN AND PASSED

THE APPROPRIATE UST SUPERVISOR EXAMINATION OFFERED BY A NATIONAL TESTING SERVICE

(OAR 340-150-0156).HELP WITH THIS REGISTRATION FORM

If you have any questions about this registration form, please phone the DEQ UST Program at (503) 229-6652. You can alsophone the UST Program's toll-free Oregon number, 1-800-742-7878. This is a message answering machine for calls made inOregon. Underground Storage Tank Program staff will return your call within 24 hours (one business day). You can alsosend an e-mail to tanks.info@deq.state.or.us. Our regional staff is also available to answer questions regarding the general permit program and this general permit registration form (see below for telephone numbers).

June 2005 Page 2 of 8 DEQ-05-LQ-019

INSTRUCTION PAGE

COPIES OF GENERAL PERMIT CONDITIONS AND REQUIREMENTS AND UST

PROGRAM RULES

Copies of the general permit to decommission conditions and requirements and UST Program rules and laws can be obtainedfrom:

1. Any of the DEQ offices listed below, 2. By calling the UST HELPLINE at 1-800-742-7878, 3. Send an e-mail to tanks.info@deq.state.or.us, or 4. Downloading from the UST home page at:

http://www.deq.state.or.us/wmc/tank/ust-lust.

htm

EASTERN

REGION:

Baker, Crook,Deschutes,Gilliam, Grant,Harney, HoodRiver, Jefferson,Klamath, Lake,Malheur,Morrow,Sherman,Umatilla, Union,Wasco, Wheeler& WallowaCounties

NORTHWEST REGION:

Clackamas, Clatsop,Columbia, Multnomah,Tillamook & WashingtonCounties

WESTERN REGION:

Benton,Coos, Curry, Douglas, Jackson,Josephine, Polk, Lane, Lincoln,Linn, Marion & Yamhill Counties

EASTERN REGION/THE DALLESPhone: 541-298-7255

WESTERN REGION / SALEMPhone: 503-378-8240

NORTHWEST REGION Phone: 503-229-5263

WESTERN REGION / COOS BAYPhone: 541-269-2721

WESTERN REGION / EUGENEPhone: 541-686-7838

UST HELPLINE: 1-800-742-7878 (toll free in Oregon)

June 2005 Page 3 of 8 DEQ-05-LQ-019

GENERAL PERMIT REGISTRATION FORM TO DECOMMISSION UNREGISTERED USTs

FACILITY NAME:

FACILITY ADDRESS:

CITY, STATE & ZIP:

PHONE: FACILITY NUMBER: (If known)

GENERAL PERMIT REGISTRATION FEE

For existing tanks installed in 1988 or earlier the registration fee is $500 per tank.

Number of existing tanks being registered ____ x $500 = $ Total Fee Due

Note: If an existing tank was installed after 1988 please contact the Department at 503-229-6652 or 1-800-742-7878 for assistance in calculating the fee. For existing tanks not previously registered and permitted, back fees are due and payable withthisgeneral permit registration form in accordance with OAR 340-150-0110 (5).

PLEASE PRINT

June 2005 Page 4 of 8 DEQ-05-LQ-019

Former Frontier Leather Company

15104 SW Oregon Street

Sherwood, Oregon 97140

NA 2687

1 500

June 2005 Page 8 of 11 DEQ-05-LQ-016

GENERAL PERMIT REGISTRATION FORM

TO INSTALL AND OPERATE USTs

______________________________________1. TANK OWNER* as registered with the Secretary of State, Corporations Division

______________________________________Mailing Address (Please Print)

______________________________________Name of Official (Please Print)

______________________________________City, State and Zip Code

______________________________________Signature of Official Date

______________________________________Area Code and Telephone Number

I will install and operate the USTs described on the Notification and Description of Underground StorageTank Systems pages in accordance with the conditions and requirements of the applicable general permits.

______________________________________2. PERMITTEE* as registered with the Secretary of State, Corporations Division

______________________________________Mailing Address (Please Print)

______________________________________Name of Official (Please Print)

______________________________________City, State and Zip Code

______________________________________Signature of Official Date

______________________________________Area Code and Telephone Number

I will install and operate the USTs described on the Notification and Description of Underground StorageTank Systems pages in accordance with the conditions and requirements of the applicable general permits.

______________________________________3. PROPERTY OWNER is name that appears on the County deed record for this property.

______________________________________Mailing Address (Please Print)

______________________________________Name of Official (Please Print)

______________________________________City, State and Zip Code

______________________________________Signature of Official Date

______________________________________Area Code and Telephone Number

* If this facility or tanks are owned by a person, or operated by a permittee, that is a business registered with the Secretary of State, Corporations Division, please use that legal business name for purposes of registering these USTswith the Department.

Please return completed pages 7 & 8, the notification and description of underground storage tank systemspages 9, 10 and 11, and applicable registration fee to:

DEQ - Business Office 811 SW 6th Avenue Portland, Oregon 97204

Pacific III, LLC

Pat Lucas

11/20/2007 503-886-9019

Sherwood, Oregon 97140

20512 SW Roy Rogers Road Suite 150

11/20/2007

Pat Lucas

Pacific III, LLC

503-886-9019

Sherwood, Oregon 97140

20512 SW Roy Rogers Road Suite 150

503-886-9019

Sherwood, Oregon 97140

20512 SW Roy Rogers Road Suite 150

11/20/2007

Pat Lucas

Sherwood Memory Partners, LLC

June 2005 Page 9 of 11 D EQ-05-LQ-016

Notification and Description of Underground Storage Tank Systems

TYPE OF OWNER INDIAN COUNTRY

Federal Government Commercial

State Government Private

Local Government

Tanks are located on land within an IndianReservation or on trust lands outsidereservation boundaries.

Tanks are owned by a Native Americannation or tribe.

Tribe or Nation:

TYPE OF FACILITY

Gas Station

Petroleum Distributor

Air Taxi (Airline)

Aircraft Owner

Auto Dealership

Railroad

Federal - Non-Military

Federal - Military

Industrial

Contractor

Trucking/Transport

Utilities

Residential

Farm

Other (Explain)

FINANCIAL RESPONSIBILITY

I will meet the financial responsibility requirements in accordance with OAR 340 - Division 151

Check All that Apply

Pollution Liability Insurance

Self Insurance

Exempt (Federal or State Government)

Letter of Credit

Surety Bond

Guarantee

Local Government

The financial responsibility requirements are designed to make sure that the tank owner, property owner orpermittee can pay the costs of cleaning up leaks and compensating third parties for bodily injury and property damage caused by leaking USTs. A plain language summary of the financial responsibilityrequirements can be downloaded from the Internet at http://www.epa.gov/swerust1/pubs/dollars.htm. For a list of known insurance providers go to http://www.epa.gov/swerust1/pubs/inslist.htm.

CONTACT PERSON IN CHARGE OF TANKS

Name: Job Title: Address: Phone Number (Include Area Code):

CERTIFICATION (Read and sign after completing all section)

I certify under penalty of law that I have personally examined and am familiar with the information submitted in this and all attached documents, and that basedon my inquiry of those individuals immediately responsible for obtaining the information, I believe that the submitted information is true, accurate, and complete.

Name and official title of owner or owner's authorized representative (Print)

Signature Date Signed

11/20/2007

503-886-901920512 SW Roy Rogers RoadSuite 150, Sherwood,Oregon 97140

OwnerPat Lucas

June 2005 Page 10 of 11 DEQ-05-LQ-016

NOTIFICATION AND DESCRIPTION OF UNDERGROUND STORAGE TANK SYSTEMS (Complete for each tank at this location.)

Tank Identification Number Tank No. Tank No. Tank No. Tank No. Tank No.

1. Status of Tank (mark only one)

Currently In Use

Temporarily Out of Use

Permanently Out of Use

2. Date of Installation (mo./year)

3. Estimated Total Capacity (gallons)

4. Material of Construction (mark all that apply) Asphalt Coated or Bare Steel

Cathodically Protected Steel

Epoxy Coated Steel

Composite (Steel with Fiberglass)

Fiberglass Reinforced Plastic

Lined Interior

Double Walled

Polyethylene Tank Jacket

Concrete

Excavation Liner

Unknown

Other, Please specify

Has Tank been repaired? Check box if yes

Date of Repair

5. Piping (Material) (mark all that apply) Bare Steel

Bare Steel Wrapped

Galvanized Steel

Fiberglass Reinforced Plastic

Copper

Cathodically Protected

Double Walled

Secondary Containment

Unknown

Not in Contact With Soil

Other, Please Specify

6. Piping (Type) (mark all that apply)

Suction: no valve at tank

Suction: valve at tank

Pressure

Gravity Feed

Has piping been repaired? Check box if yes

Date of Repair

not known

10,000

June 2005 Page 11 of 11 DEQ-05-LQ-016

NOTIFICATION AND DESCRIPTION OF UNDERGROUND STORAGE TANK SYSTEMS (Complete for each tank at this location.)

Tank Identification Number Tank No. Tank No. Tank No. Tank No. Tank No.

7. Substance Currently or Last Stored in GreatestQuantity by Volume

(Check Only One Substance Per Tank)

Gasoline

Diesel

Gasohol

Kerosene

Heating Oil

Used Oil

Hazardous Substance

CERCLA name and/or

CAS number

_____________

_____________

_____________

_____________

_____________

_____________

_____________

_____________

_____________

_____________

Mixture of Substances

Please Specify _____________ _____________ _____________ _____________ _____________

OtherPlease Specify

_____________ _____________ _____________ _____________ _____________

8. Release Detection (Mark all that apply)

A. Manual tank gauging

B. Tank tightness testing

C. Inventory Control

D. Automatic tank gauging

E. Vapor monitoring

F. Groundwater monitoring

G. Verify monitoring/secondary containment

H. Automatic line leak detectors

I. Line tightness testing

J. No release detection required (emergency generator tanks/field constructed tanks)

K. Other method allowed by implementing agency.

TANK PIPING TANK PIPING TANK PIPING TANK PIPING TANK PIPING

Please specify

9. Spill and Overfill Protection

A. Overfill device installed

B. Spill device installed

_____________79-01-6

TCE

01

GENERAL PERMIT REGISTRATION FORM

TO INSTALL AND OPERATE USTs

Pacific III, LLC

1. TANK OWNER* as registered withthe Secretary of State, Corporations Division

Plki+/C .;zt I LL-C. - -

Name of Official (Please Print)

20512 SW Roy Roqers Road Suite 150

Mailing Address (Please Print)

Sherwood. Oreaon 97140City, State and Zip Code

~ ~~ -2/7-);790( ~~11/20/2007 ~~-U~Signature of Official Date Area Code and Telephone NumberIwill install and operate the USTs described on the Notification and Description of Underground Storage

Tank Systems pages in accordance with the condition~. and requirements of the applicable general permits.

Pacific III, LLC

2. PERMITTEE * as registered with theSecretary of State, Corporations Division

20512 SW Roy Roqers Road Suite 150

Mailing Address (Please Print)

.J PI}-7X-IC K' I-JcdS'{ M/!/V/J;'Y1flit L••GTs Sherwood, Oreqon 97140

Name of Official (Please Print) City, State and Zip Code

5Z/1-2t7- 5/9 Co11/20/2007 ~8t'I-~0f9Signature of Official Date Area Code and Telephone Number

Iwill install and operate the USTs described on the Notification and Description of Underground Storage

.5 tl~t:x:c;/ ot?-!!S C/?/t= ~y//.Sfu:rwoud-Memer-y-!laftflers;t!:E-

3. PROPERTY OWNER is name that

appears on the County deed record for this property.

:y ~/C:../< L-J(4 S/ /ff4/11/{7fK~.:o=r~

Name of Official (Please Print)

~~'l/20J2007Ignature of Official Date

I-L C

20512 SW Roy Roqers Road Suite 150Mailing Address (Please Print)

Sherwood, Oreqon 97140

City, State and Zip Code

,5V.s -2./-;;>- ~I S" c~Q3"ee6 S)EW:}

Area Code and Telephone Number

* If this facility or tanks are owned by a person, or operated by a permittee, that is a business registered with theSecretary of State, Corporations Division, please use that legal business name for purposes of registering these USTswith the Department.

Please return completed pages 7 & 8, the notification and description of underground storage tank systemspages 9,10 and II, and applicable registration fee to:

DEQ - Business Office811 SW 6th AvenuePortland, Oregon 97204

June 2005 Page 8 of II DEQ-05-LQ-016

OREGON DEPARTMENT OF ENVIRONMENTAL QUALITYUNDERGROUND STORAGE TANK PROGRAM

UNDERGROUND STORAGE TANK DECOMMISSIONINGCHECKLIST AND SITE ASSESSMENT REPORT

A. FACILITY INFORMATION:

This report MUST be submitted by the underground storage tank permittee or tank owner, or the licensedDEQ Service Provider on their behalf, within 30 days following completion of the tank decommissioning orchange-in-service regardless of ongoing cleanup work.

DEQ FACILITY NUMBER: _________________________________________

FACILITY NAME: ________________________________________________________________________________

FACILITY ADDRESS: ________________________________________________________________________________

PERMITTEE PHONE: ________________________________ DATE: ______________________

B. WORK PERFORMED BY:

The checklist and site assessment report should be completed and signed by the DEQ licensed supervisor and signed by anexecutive officer of the DEQ licensed Service Provider on page 6. The tank owner or permittee must review and sign thereport on page 6. NOTE: AN OWNER OR PERMITTEE MAY PERFORM UST SERVICES ONLY IF THEYHAVE TAKEN AND PASSED THE APPROPRIATE UST SUPERVISOR EXAMINATION OFFERED BY ANATIONAL TESTING SERVICE (SEE OAR 340-150-0156 for requirements).

DEQ Service Provider's License #: ____________________ Construction Contractors Board License #: ___________________

Name: ________________________________________

Telephone: ________________________________________

DEQ Decommissioning Supervisor's License #: _______________________________________

Name: ________________________________________

Telephone: ________________________________________

DEQ Soil Matrix Service Provider's License #: ________________________________________ (If applicable)

Name: ________________________________________

Telephone: ________________________________________

DEQ Soil Matrix Supervisor's License #: ________________________________________ (If applicable)

Name: ________________________________________

Telephone: ________________________________________

June 2005 Page 1 of 7 DEQ-05-LQ-021

Print Form

2687

Former Frontier Leather Company

15104 SW Oregon Street, Sherwood, OR

NA 2/6/2008

15673 135059

EVREN Northwest, Inc.

503-452-5561

15022/26613

LYNN GREEEN/MIKE KRZEMINSKI

503-849-5895/503-452-5561

SAME

15255/26612

LYNN GREEEN/MIKE KRZEMINSKI

503-849-5895/503-452-5561

June 2005 Page 2 of 7 DEQ-05-LQ-021

C. DATES:

Decommissioning/Change-in-Service Notice - Date Submitted: _______________ (30 days before work starts).

Work Start Telephone Notice - Date Submitted: _______________ (3 working days before work starts).

DEQ Person Notified: ____________________________________________

Date Work Started: _______________ Date Work Completed: ______________

Note: Provide the following information if any soil or water contamination is found during the decommissioning or change-in-service. Contamination must be reported by the UST permittee within 24 hours. The licensed service provider must reportcontamination within 72 hours after discovery unless previously reported.

Date Contamination Reported: _____________ By: ___________________________________

DEQ Person Notified: _____________________________________________

D. OTHER DEQ PERMITS MAY BE NEEDED WHERE SOIL OR WATER CLEANUP IS REQUIRED.

DEQ Water Discharge Permit #: ________________ Date: ________________

Water Disposed to (Location): _______________________________________________

DEQ Solid Waste Disposal Permit #: ________________ Date: ________________

Soil Disposal or Treatment Location: _______________________________________________

E. TANK INFORMATION:PRODUCT: GASOLINE,

DIESEL, USED OIL,OTHER?

CLOSURE OR CHANGE-IN- SERVICE? TANK TO BEREPLACED?

TANKID #

DEQ-USTPERMIT #

TANK SIZEIN

GALLONS

PRESENT NEW TANKREMOVAL

CLOSUREIN

PLACE♦

CHANGEIN

SERVICE♦

YES* NO

NOTE 1: Where decommissioned tank(s) are replaced by new underground storage tanks the UST permittee must submit aGeneralPermit Registration Form to Install and Operate USTs containing information on the new tanks 30 days before installing them.NOTE 2: Submit a soil sampling plan to the DEQ regional office and receive plan approval prior to starting work if 1) tank is to bedecommissioned in-place, 2) tank contents are changed to a non-regulated substance, 3) tank contains a regulated substanceother thanpetroleum, or 4) tank changed to non-regulated use.

1/3/2008

1/8/2008

Kevin Dana/Greg Toran

1/21/2008 2/1/2008

10/16/2007 Brent Jorgensen

Mark Pugh

NA NA

PCS, Tacoma Washington

OR0000015927 1/23/2008

Hillsboro Landfill

1 NA 8000 Waste oil

June 2005 Page 3 of 7 DEQ-05-LQ-021

F. DISPOSAL INFORMATION:

TANK AND PIPING DISPOSAL METHOD DISPOSAL LOCATION OF TANK CONTENTS

TANKID #

SCRAP LAND-FILL

OTHER IDENTIFY LOCATION& PROPERTY OWNER

LIQUIDS * SLUDGES *

NOTE 1: The tank contents, the tank and the piping may be subject to the requirements of Hazardous Waste regulations. If youhavequestions, contact the DEQ regional office for your area.NOTE 2: Attach copies of the disposal receipts for the tanks and piping. If the tanks are shipped off-site for reuse provide thename,address and phone number of the person or business receiving the tanks for reuse.NOTE 3: Attach copies of the disposal receipts for the disposal or treatment of liquid or sludge removed from thetanks

G. CONTAMINATION INFORMATION:

TANKID #

GROUND *WATERIN PIT ?

PRODUCTODOR IN

SOIL ?

PRODUCTSTAINS

IN SOIL ?

NUMBEROF

SAMPLES

LABORATORY( NAME, CITY, STATE, PHONE )

NOTE 1: Attach a copy of the laboratory report showing the results of all tests on all soil and water samples. The laboratory reportmust identify sample collection methods, sample location, sample depth, sample type (soil or water), type of sample container, sampletemperature during transportation, types of tests, and copies of analytical laboratory reports, including QA/QC information. Includelaboratory name, address and copies of chain-of-custody forms.

NOTE 2: If contamination is detected and a Level 2 or Level 3 soil matrix cleanup standard is applied to the site, attach a copy ofthesoil matrix analysis including methods of determining soil type, depth to groundwater, and sensitivity of uppermost aquifer.

US Ecology, IdahoPSC, Tacoma, WAMetro Metals

1

FRIEDMAN AND BRUYA, SEATTLE, WA1

June 2005 Page 4 of 7 DEQ-05-LQ-021

H. SITE SKETCH: (Show location of adjacent roads, property lines, structures, dispensers, & all USTs. Show North,general direction of ground slope and soil sample locations. Sketch does not need to be drawn to scale. You may attach aseparate drawing.)

See report

June 2005 Page 5 of 7 DEQ-05-LQ-021

I. SAFETY EQUIPMENT ON JOB SITE:

Fire Extinguisher: Type/Size: _________________________________ Recharge Date: _____________

Combustible Gas Detector: Model: ____________________________________ Calibration Date: _____________

Oxygen Analyzer: Model: ____________________________________ Calibration Date: _____________

J. DECOMMISSIONING:

All Tanks: N/A = Not Applicable (Check ( ) Appropriate Box) YES NO UNKNOWN N/A

1. All electrical equipment grounded and explosion proof?

2. Safety equipment on job site?

3. Overhead electrical lines located?

4. Subsurface electrical lines off or disconnected?

5. Natural gas lines off or disconnected?

6. No open fires or smoking material in area?

7. Vehicle and pedestrian traffic controlled?

8. Excavation material area cleared?

9. Rainwater runoff directed to treatment area?

10. Drained and collected product from lines?

11. Removed product and residual from tank?

12. Cleaned tank?

13. Excavated to top of tank?

14. Removed tank fixtures? (pumps, leak detection equipment)

15. Removed product, fill and vent lines?

K. TANK ABANDONMENT IN-PLACE:

All Tanks: N/A = Not Applicable (Check ( ) Appropriate Box) YES NO UNKNOWN N/A

16. Sampling plan approved by DEQ? Date:_____________ DEQ Staff: ________________________

17. Contamination concerns fully resolved?

18. Fill Material? Type: ___________________________

AUG-2008

1/21/2008

1/21/2008

MULTIPHASE/1 gall (x5)

MultiRae

MultiRae

12-13-2007 GREGGORY TORAN

NA

L. TANK REMOVAL:

All Tanks: N/A = Not Applicable (Check N) Appropriate Box)

19. Tank placement area cleared, chocks placed?

YES

iX

NO

!­

UNKNOWN

r-NJA

i

20. Purged or ventilated tank to prevent explosion? Method used: Pmge

Meter reading: OLEL

21. Were chains or steel cables wrapped around tank for removal?

rx

f­

,-~

i

iX

1­

-­i

r

I

22. Tank removed, set on ground, blocked to prevent movement? ,~'-

: r­ :­ IX

23. Tank set on truck and secured with straps(s)? IX -, r-i ;

24. Tank labeled before leaving site? rx ! -­ r-

M. SITE ASSESSMENT:

All Tanks: N/A = Not Applicable (Check (V') Appropriate Box) YES NO UNKNOWN NJA

25. Site assessed for contamination? See OAR 340-122-0340 rx ,­I r- I

26. Soil samples taken and analyzed? iX i­ i- r

27. Was contamination found? DateITime: 1011612007

28. Was hazardous waste detennination made for tank contents (Liquids/sludges)?

IX ~ ~

;

IX -­I - r--­!

N. REQUIRED SIGNATURES:

I have personally reviewed this decomm~ionin$.chec~ and si~ assessment report and the attachments and find them to be true and complete. r# (., ~ '.:I.7f; t. '-<­

Permittee or Tank Owner: __-=:)=-..:-;_~_-f,_r_I_e-k tv_C_/-}--=----5 _ (Please Print)

Permittee or Tank Owner: _ ..........-­(Signature)

I have personally reviewed this decommissioning checklist and site assessment report and the attachments and fmd them to be true and completc.

~~::~p~:~Msor: _LYNN_r_~_~_fM_~_~_._._SKI_Cl-/-.)-;-.,---=--))7----,.72=-+---1-1-­

2:71l00ll

Licensed SupeMsor: '"J\.../'I-/_ -l--Uv--- Date: (Signature)

I have personally reviewed this decommissioning checklist and site assessment report and the attachments and fmd them to be true and complete. •

Executive Officer: NEIL WOLLER ~~ g ~ Licensed Service Provider (Plea~~ --­Executive Officer: ~ ~~ Date: _2I7_1l_008 _

Licensed Service Provider (Signature)

June 2005 Page 6 of 7 DEQ~5-LQ-02 1

O. REPORT FILING:This report signed by the permittee or tank owner, licensed supervisor and executive officer of the Service Provider,complete with all applicable attachments, must be filed with the DEQ regional office within 30 days after the excavationis backfilled or change-in-service is complete. Do not wait until any site related cleanup project is completed. Contactthe DEQ regional office prior to filing this report where special circumstances exist at the site (such as water in pit,remaining pockets of contamination, etc.).

P. HELP WITH THIS REPORT:

If you have any questions about this decommissioning checklist and site assessment report, please phone your DEQRegional Office. You can also phone the UST Program's toll-free number, 1-800-742-7878. This is a message answeringmachine for calls made within Oregon. Underground Storage Tank Program staff will return your calls within 24 hours.You can also send an e-mail to tanks.info@deq.state.or.us. Our regional staff are also available to answer questionsregarding tank decommissioning or change-in-service requirements (see below for telephone numbers).

Q. COPIES OF THE GENERAL PERMIT TO DECOMMISSION OR COMPLETE A CHANGE-IN-SERVICE:

Obtain copies of the general permit to decommission or complete a change-in-service conditions and requirements, USTProgram rules and laws and UST Cleanup rules and laws at:

1. Any of the DEQ offices listed below,2. By calling the UST HELPLINE at 1-800-742-7878,3. Send an e-mail to tanks.info@deq.state.or.us or4. Downloading from the UST home page at:

http://www.deq.state.or.us/wmc/tank/ust-lust.htm

EASTERNREGION:Baker, Crook,Deschutes,Gilliam, Grant,Harney, HoodRiver, Jefferson,Klamath, Lake,Malheur,Morrow,Sherman,Umatilla, Union,Wasco, Wheeler& WallowaCounties

NORTHWEST REGION:Clackamas, Clatsop,Columbia, Multnomah,Tillamook & WashingtonCounties

WESTERN REGION: Benton,Coos, Curry, Douglas, Jackson,Josephine, Polk, Lane, Lincoln,Linn, Marion & Yamhill Counties

EASTERN REGION / THE DALLES400 E. Scenic Drive, Building 2 - 307The Dalles, OR 97058Phone: 541-298-7255Fax: 541-298-7330

NORTHWEST REGION2020 SW 4th Avenue, Suite 400Portland, OR 97201-5884Phone: 503-229-5263Fax: 503-229-6945

WESTERN REGION / COOS BAY381 N SECOND STREETCOOS BAY 97420Phone: 541-269-2721Fax: 541-269-7984

WESTERN REGION / EUGENE1102 Lincoln Street, Suite 210Eugene, OR 97401Phone: 541-686-7838Fax: 541-686-7551

WESTERN REGION / SALEM750 Front Street NE, Suite 120Salem, OR 97301-1039Phone: 503-378-8240Fax: 503-373-7944

June 2005 Page 7 of 7 DEQ-05-LQ-021

APPENDIX B SITE PHOTOGRAPHS

Surface soils above the tank were removed to access the top of the tank. The surface soils were impacted from a previous overspill from the tank, and were taken offsite for disposal.

Waste oil product was present in the surface soils

Project No. 351-05009-06

Product and water were present inside the tank along with large quantities of solid debris.

Former Frontier Leather Company Site 15104 SW Oregon Street Sherwood, Oregon

Site Photographs Appendix

B

West Coast Marine first pumped the product and water with a vacuum truck

West Coast marine pumping the tank

A large hole was present in the west end of the tank and was further opened for access to the interior

Project No. 351-05009-06

A vacuum truck was used to pump the product/water from the tank

Among the large solid debris found in the tank were several 15 to 20-gallon drums (severely corroded)

Former Frontier Leather Company Site 15104 SW Oregon Street Sherwood, Oregon

Site Photographs Appendix

B

Project No. 351-05009-06

Former Frontier Leather Company Site 15104 SW Oregon Street Sherwood, Oregon

Site Photographs Appendix

B

Solid debris smaller than 6-inch diameter was removed using large diameter vacuum hosing

A guzzler vacuum truck attached to a vacuum box was utilized to remove the solid debris from the tank

Overview of the tank pumping process

Project No. 351-05009-06

Former Frontier Leather Company Site 15104 SW Oregon Street Sherwood, Oregon

Appendix B

Site Photographs

The large solid debris inside the tank was voluminous and required an additional large debris drop box to be mobilized to the site

Large solid debris was placed in a plastic-lined drop box

Overview of the tank pumping process

All solid debris was removed from the tank, and the remaining sludge was pumped to allow for cleaning of the tank interior

Project No. 351-05009-06

Former Frontier Leather Company Site 15104 SW Oregon Street Sherwood, Oregon

Appendix B

Site Photographs

After the tank interior was cleaned, the soils surrounding the tank were removed to relieve the tanks. As the soils were impacted they were also transported offsite for disposal.

A crane was used to remove the tank

The tank was removed and was observed to covered with waste oil product

The tank was severely corroded and many holes were observed throughout the tank

Overnight (after the tank interior was cleaned) groundwater had entered the tank (about 4-inches)

The tank was severely corroded and many holes were observed throughout the tank

The tank was situated inside a concrete mold, to which the tank was strapped (acting as a dead man). Product and groundwater were present in the bottom of the concrete mold.

Waste oil product and holes on the tank

Project No. 351-05009-06

Former Frontier Leather Company Site 15104 SW Oregon Street Sherwood, Oregon

Site Photographs Appendix

B

Project No. 351-05009-06

Former Frontier Leather Company Site 15104 SW Oregon Street Sherwood, Oregon

Appendix B

Site Photographs

The tank was placed on a trailer for transport to the recycling facility

Waste oil product was evident in soils on top of the concrete deadman

Soils surrounding the concrete deadman were visibly impacted and were initially removed to a depth of four feet bgs.

Test pits were dug on each side of the concrete dead man to evaluate vertical depth of remaining contamination, and to assess impacts at each end of the UST

Test pits originally encountered water about 9 feet bgs, but overnight groundwater stabilized at 5 feet bgs.

Project No. 351-05009-06

Former Frontier Leather Company Site 15104 SW Oregon Street Sherwood, Oregon

Site Photographs Appendix

B

Impacted soils were initially removed to a depth of 4 feet bgs surrounding the former tank location.

Confirmation soil samples were collected at a 3 foot depth in the sidewalls of the excavation.

View of the tank excavation showing radial limits of petroleum-impacted soil.

A ground water sample was collected from one of the test pits

Project No. 351-05009-06

Former Frontier Leather Company Site 15104 SW Oregon Street Sherwood, Oregon

Site Photographs Appendix

B

As approved by ODEQ, arsenic impacted soils stockpiled at the site were placed into the cradle of the concrete deadman, to a depth of 4 feet bgs (stockpile of arsenic-impacted soil shown here).

The arsenic soils were placed no higher than 4 feet bgs

The remainder of the excavation (the top 4 feet) was backfilled with clean crushed rock stockpiled at the site

Project No. 351-05009-06

Former Frontier Leather Company Site 15104 SW Oregon Street Sherwood, Oregon

Appendix B

Site Photographs

The clean crushed gravel was placed and compacted into the excavation to meet the surrounding grade

The clean crushed gravel was placed and compacted into the excavation to meet the surrounding grade

Re-excavating south side of UST/PCS excavation to removal additional PCS (1/31/2008)

Excavation of PCS was terminated at the ground water/soil interface. Approximately 20 cubic yards of additional PCS was removed from the south side of the former UST location

Project No. 351-05009-06

r Company Site 15104 SW Oregon Street Sherwood, Oregon

Site Photographs Appendix

B

Former Frontier Leathe

Removing additional PCS from north side of former UST location (2/1/2008)

Excavation of PCS was terminated at the ground water/soil interface. Approximately 10 cubic yards of additional PCS was removed from the north side of the former UST location

APPENDIX C LABORATORY ANALYTICAL REPORTS

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

James E. Bruya, Ph.D. 3012 16th Avenue West Charlene Morrow, M.S. Seattle, WA 98119-2029 Yelena Aravkina, M.S. TEL: (206) 285-8282 Bradley T. Benson, B.S. FAX: (206) 283-5044 Kurt Johnson, B.S. e-mail: fbi@isomedia.com

February 7, 2008 Lynn Green, Project Manager Evren Northwest, Inc. PO Box 80747 Portland, OR 97280 Dear Mr. Green: Included are the additional results from the testing of material submitted on January 24, 2008 from the Frontier Leather USY 351-05009-06, F&BI 801227 project. There are 3 pages included in this report. We appreciate this opportunity to be of service to you and hope you will call if you should have any questions. Sincerely, FRIEDMAN & BRUYA, INC.

Bradley T. Benson Chemist Enclosures c: Neil Woller, Mike Krzeminski ENW0207R.DOC

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

1

CASE NARRATIVE This case narrative encompasses samples received on January 24, 2008 by Friedman & Bruya, Inc. from the Evren Northwest, Inc. Frontier Leather USY 351-05009-06, F&BI 801227 project. Samples were logged in under the laboratory ID’s listed below. Laboratory ID Evren Northwest, Inc. 801227-01 GS01-NW-4' 801227-02 GS02-SW-4' 801227-03 GS03-EW-4' 801227-04 GS04-WW-4' 801227-05 GS05-TPW-INF-9' 801227-06 GS06-TPE-INF-9' All quality control requirements were acceptable.

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

2

Date of Report: 02/07/08 Date Received: 01/24/08 Project: Frontier Leather USY 351-05009-06, F&BI 801227 Date Extracted: 01/24/08 Date Analyzed: 02/07/08

RESULTS FROM THE ANALYSIS OF THE SOIL SAMPLES FOR GASOLINE, DIESEL AND HEAVY OIL BY NWTPH-HCID

Results Reported as Not Detected (ND) or Detected (D)

THE DATA PROVIDED BELOW WAS PERFORMED PER THE GUIDELINES ESTABLISHED BY THE

WASHINGTON DEPARTMENT OF ECOLOGY AND WERE NOT DESIGNED TO PROVIDE INFORMATION

WITH REGARDS TO THE ACTUAL IDENTIFICATION OF ANY MATERIAL PRESENT Surrogate Sample ID Gasoline Diesel Heavy Oil (% Recovery) Laboratory ID (Limit 50-150) GS01-NW-4’ ND D ND 96 801227-01 GS02-SW-4’ ND D ND 97 801227-02 GS03-EW-4’ ND D ND 96 801227-03 GS04-WW-4’ ND D ND 100 801227-04 GS05-TPW-INF-9’ ND ND ND 94 801227-05 GS06-TPE-INF-9’ ND ND ND 90 801227-06 Method Blank ND ND ND 86 ND - Material not detected at or above 20 mg/kg gas, 50 mg/kg diesel and 250 mg/kg heavy oil.

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

3

Data Qualifiers & Definitions a - The analyte was detected at a level less than five times the reporting limit. The RPD results may not provide reliable information on the variability of the analysis.

A1 – More than one compound of similar molecule structure was identified with equal probablility.

b - The analyte was spiked at a level that was less than five times that present in the sample. Matrix spike recoveries may not be meaningful.

ca - The calibration results for this range fell outside of acceptance criteria. The value reported is an estimate.

c - The presence of the analyte indicated may be due to carryover from previous sample injections.

d - The sample was diluted. Detection limits may be raised due to dilution.

ds - The sample was diluted. Detection limits are raised due to dilution and surrogate recoveries may not be meaningful.

dv - Insufficient sample was available to achieve normal reporting limits and limits are raised accordingly.

fb - The analyte indicated was found in the method blank. The result should be considered an estimate.

fc – The compound is a common laboratory and field contaminant.

hr - The sample and duplicate were reextracted and reanalyzed. RPD results were still outside of control limits. The variability is attributed to sample inhomogeneity.

ht - The sample was extracted outside of holding time. Results should be considered estimates.

ip - Recovery fell outside of normal control limits. Compounds in the sample matrix interfered with the quantitation of the analyte.

j – The result is below normal reporting limits. The value reported is an estimate.

J - The internal standard associated with the analyte is out of control limits. The reported concentration is an estimate.

jl - The analyte result in the laboratory control sample is out of control limits. The reported concentration should be considered an estimate.

jr - The rpd result in laboratory control sample associated with the analyte is out of control limits. The reported concentration should be considered an estimate.

js - The surrogate associated with the analyte is out of control limits. The reported concentration should be considered an estimate.

lc - The presence of the compound indicated is likely due to laboratory contamination.

L - The reported concentration was generated from a library search.

nm - The analyte was not detected in one or more of the duplicate analyses. Therefore, calculation of the RPD is not applicable.

pc – The sample was received in a container not approved by the method. The value reported should be considered an estimate.

pr – The sample was received with incorrect preservation. The value reported should be considered an estimate.

ve - The value reported exceeded the calibration range established for the analyte. The reported concentration should be considered an estimate.

vo - The value reported fell outside the control limits established for this analyte.

x - The pattern of peaks present is not indicative of diesel.

y - The pattern of peaks present is not indicative of motor oil.

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

James E. Bruya, Ph.D. 3012 16th Avenue West Charlene Morrow, M.S. Seattle, WA 98119-2029 Yelena Aravkina, M.S. TEL: (206) 285-8282 Bradley T. Benson, B.S. FAX: (206) 283-5044 Kurt Johnson, B.S. e-mail: fbi@isomedia.com

February 4, 2008 Lynn Green, Project Manager Evren Northwest, Inc. PO Box 80747 Portland, OR 97280 Dear Mr. Green: Included are the results from the testing of material submitted on January 28, 2008 from the Frontier Leather 351-05009-06, F&BI 801260 project. There are 6 pages included in this report. Any samples that may remain are currently scheduled for disposal in 30 days. If you would like us to return your samples or arrange for long term storage at our offices, please contact us as soon as possible. We appreciate this opportunity to be of service to you and hope you will call if you should have any questions. Sincerely, FRIEDMAN & BRUYA, INC.

Bradley T. Benson Chemist Enclosures c: Neil Woller, Mike Krzeminski ENW0204R.DOC

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

1

CASE NARRATIVE This case narrative encompasses samples received on January 28, 2008 by Friedman & Bruya, Inc. from the Evren Northwest, Inc. Frontier Leather 351-05009-06, F&BI 801260 project. Samples were logged in under the laboratory ID’s listed below. Laboratory ID Evren Northwest, Inc. 801260-01 DW-080125 All quality control requirements were acceptable.

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

2

Analysis For Semivolatile Compounds By EPA Method 8270C SIM Client Sample ID: DW-080125 Client: Evren Northwest, Inc. Date Received: 01/28/08 Project: 351-05009-06, F&BI 801260 Date Extracted: 01/29/08 Lab ID: 801260-01 Date Analyzed: 01/30/08 Data File: 013011.D Matrix: Water Instrument: GCMS6 Units: ug/L (ppb) Operator: YA Lower Upper Surrogates: % Recovery: Limit: Limit: Anthracene-d10 93 50 150 Benzo(a)anthracene-d12 78 50 129 Concentration Compounds: ug/L (ppb) Naphthalene 51 ve Acenaphthylene <0.05 J Acenaphthene 5.1 J Fluorene 4.2 J Phenanthrene 3.9 Anthracene 0.84 Fluoranthene 0.057 Pyrene 0.11 Benz(a)anthracene <0.05 Chrysene <0.05 Benzo(a)pyrene <0.05 Benzo(b)fluoranthene <0.05 Benzo(k)fluoranthene <0.05 Indeno(1,2,3-cd)pyrene <0.05 Dibenz(a,h)anthracene <0.05 Benzo(g,h,i)perylene <0.05

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

3

Analysis For Semivolatile Compounds By EPA Method 8270C SIM Client Sample ID: DW-080125 Client: Evren Northwest, Inc. Date Received: 01/28/08 Project: 351-05009-06, F&BI 801260 Date Extracted: 01/29/08 Lab ID: 801260-01 1/10 Date Analyzed: 01/30/08 Data File: 013013.D Matrix: Water Instrument: GCMS6 Units: ug/L (ppb) Operator: YA Lower Upper Surrogates: % Recovery: Limit: Limit: Anthracene-d10 119 50 150 Benzo(a)anthracene-d12 87 50 129 Concentration Compounds: ug/L (ppb) Naphthalene 75 Acenaphthylene <0.5 Acenaphthene 6.0 Fluorene 4.3 Phenanthrene 4.1 Anthracene 0.90 Fluoranthene <0.5 Pyrene <0.5 Benz(a)anthracene <0.5 Chrysene <0.5 Benzo(a)pyrene <0.5 Benzo(b)fluoranthene <0.5 Benzo(k)fluoranthene <0.5 Indeno(1,2,3-cd)pyrene <0.5 Dibenz(a,h)anthracene <0.5 Benzo(g,h,i)perylene <0.5

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

4

Analysis For Semivolatile Compounds By EPA Method 8270C SIM Client Sample ID: Method Blank Client: Evren Northwest, Inc. Date Received: Not Applicable Project: 351-05009-06, F&BI 801260 Date Extracted: 01/29/08 Lab ID: 08-139 mb Date Analyzed: 01/30/08 Data File: 013007.D Matrix: Water Instrument: GCMS6 Units: ug/L (ppb) Operator: YA Lower Upper Surrogates: % Recovery: Limit: Limit: Anthracene-d10 95 50 150 Benzo(a)anthracene-d12 81 50 129 Concentration Compounds: ug/L (ppb) Naphthalene <0.05 Acenaphthylene <0.05 Acenaphthene <0.05 Fluorene <0.05 Phenanthrene <0.05 Anthracene <0.05 Fluoranthene <0.05 Pyrene <0.05 Benz(a)anthracene <0.05 Chrysene <0.05 Benzo(a)pyrene <0.05 Benzo(b)fluoranthene <0.05 Benzo(k)fluoranthene <0.05 Indeno(1,2,3-cd)pyrene <0.05 Dibenz(a,h)anthracene <0.05 Benzo(g,h,i)perylene <0.05

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

5

Date of Report: 02/04/08 Date Received: 01/28/08 Project: Frontier Leather 351-05009-06, F&BI 801260

QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF WATER SAMPLES FOR PNA’S BY EPA METHOD 8270C SIM

Laboratory Code: Laboratory Control Sample Analyte

Reporting

Units

Spike Level

Percent Recovery

LCS

Percent Recovery

LCSD

Acceptance

Criteria

RPD

(Limit 20) Naphthalene ug/L (ppb) 5 83 77 68-101 7 Acenaphthylene ug/L (ppb) 5 83 77 70-109 7 Acenaphthene ug/L (ppb) 5 82 75 69-104 9 Fluorene ug/L (ppb) 5 92 85 68-111 8 Phenanthrene ug/L (ppb) 5 94 86 66-106 9 Anthracene ug/L (ppb) 5 96 89 67-112 8 Fluoranthene ug/L (ppb) 5 89 80 69-116 11 Pyrene ug/L (ppb) 5 87 78 68-115 11 Benz(a)anthracene ug/L (ppb) 5 72 65 65-102 10 Chrysene ug/L (ppb) 5 74 67 66-103 10 Benzo(b)fluoranthene ug/L (ppb) 5 79 75 68-116 5 Benzo(k)fluoranthene ug/L (ppb) 5 81 73 70-117 10 Benzo(a)pyrene ug/L (ppb) 5 80 74 64-116 8 Indeno(1,2,3-cd)pyrene ug/L (ppb) 5 95 90 63-122 5 Dibenz(a,h)anthracene ug/L (ppb) 5 91 83 66-116 9 Benzo(g,h,i)perylene ug/L (ppb) 5 89 83 66-114 7

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

6

Data Qualifiers & Definitions a - The analyte was detected at a level less than five times the reporting limit. The RPD results may not provide reliable information on the variability of the analysis.

A1 – More than one compound of similar molecule structure was identified with equal probablility.

b - The analyte was spiked at a level that was less than five times that present in the sample. Matrix spike recoveries may not be meaningful.

ca - The calibration results for this range fell outside of acceptance criteria. The value reported is an estimate.

c - The presence of the analyte indicated may be due to carryover from previous sample injections.

d - The sample was diluted. Detection limits may be raised due to dilution.

ds - The sample was diluted. Detection limits are raised due to dilution and surrogate recoveries may not be meaningful.

dv - Insufficient sample was available to achieve normal reporting limits and limits are raised accordingly.

fb - The analyte indicated was found in the method blank. The result should be considered an estimate.

fc – The compound is a common laboratory and field contaminant.

hr - The sample and duplicate were reextracted and reanalyzed. RPD results were still outside of control limits. The variability is attributed to sample inhomogeneity.

ht - The sample was extracted outside of holding time. Results should be considered estimates.

ip - Recovery fell outside of normal control limits. Compounds in the sample matrix interfered with the quantitation of the analyte.

j – The result is below normal reporting limits. The value reported is an estimate.

J - The internal standard associated with the analyte is out of control limits. The reported concentration is an estimate.

jl - The analyte result in the laboratory control sample is out of control limits. The reported concentration should be considered an estimate.

jr - The rpd result in laboratory control sample associated with the analyte is out of control limits. The reported concentration should be considered an estimate.

js - The surrogate associated with the analyte is out of control limits. The reported concentration should be considered an estimate.

lc - The presence of the compound indicated is likely due to laboratory contamination.

L - The reported concentration was generated from a library search.

nm - The analyte was not detected in one or more of the duplicate analyses. Therefore, calculation of the RPD is not applicable.

pc – The sample was received in a container not approved by the method. The value reported should be considered an estimate.

pr – The sample was received with incorrect preservation. The value reported should be considered an estimate.

ve - The value reported exceeded the calibration range established for the analyte. The reported concentration should be considered an estimate.

vo - The value reported fell outside the control limits established for this analyte.

x - The pattern of peaks present is not indicative of diesel.

y - The pattern of peaks present is not indicative of motor oil.

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

James E. Bruya, Ph.D. 3012 16th Avenue West Charlene Morrow, M.S. Seattle, WA 98119-2029 Yelena Aravkina, M.S. TEL: (206) 285-8282 Bradley T. Benson, B.S. FAX: (206) 283-5044 Kurt Johnson, B.S. e-mail: fbi@isomedia.com

February 5, 2008 Lynn Green, Project Manager Evren Northwest, Inc. PO Box 80747 Portland, OR 97280 Dear Mr. Green: Included are the results from the testing of material submitted on February 4, 2008 from the Frontier 351-05009-06, F&BI 802013 project. There are 10 pages included in this report. Any samples that may remain are currently scheduled for disposal in 30 days. If you would like us to return your samples or arrange for long term storage at our offices, please contact us as soon as possible. We appreciate this opportunity to be of service to you and hope you will call if you should have any questions. Sincerely, FRIEDMAN & BRUYA, INC.

Bradley T. Benson Chemist Enclosures c: Neil Woller, Mike Krzeminski ENW0205R.DOC

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

1

CASE NARRATIVE This case narrative encompasses samples received on February 4, 2008 by Friedman & Bruya, Inc. from the Evren Northwest, Inc. Frontier 351-05009-06, F&BI 802013 project. Samples were logged in under the laboratory ID’s listed below. Laboratory ID Evren Northwest, Inc. 802013-01 GS20-5 802013-02 GS21-7 802013-03 GS22-5 802013-04 GS23-6 All quality control requirements were acceptable.

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

2

Date of Report: 02/05/08 Date Received: 02/04/08 Project: Frontier 351-05009-06, F&BI 802013 Date Extracted: 02/04/08 Date Analyzed: 02/04/08

RESULTS FROM THE ANALYSIS OF THE SOIL SAMPLES FOR TOTAL PETROLEUM HYDROCARBONS AS

DIESEL AND RESIDUAL RANGE USING METHOD NWTPH-Dx

Results Reported on a Dry Weight Basis Results Reported as mg/kg (ppm)

Surrogate Sample ID Diesel Range Residual Range (% Recovery) Laboratory ID (C10-C25) (C25-C36) (Limit 67-127) GS20-5 <50 <250 93 802013-01

GS21-7 <50 <250 91 802013-02

GS22-5 <50 <250 89 802013-03

GS23-6 <50 <250 91 802013-04

Method Blank <50 <250 98

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

3

Analysis For Volatile Compounds By EPA Method 8260B Client Sample ID: GS20-5 Client: Evren Northwest, Inc. Date Received: 02/04/08 Project: 351-05009-06, F&BI 802013 Date Extracted: 02/04/08 Lab ID: 802013-01 Date Analyzed: 02/04/08 Data File: 020406.D Matrix: Soil Instrument: GCMS5 Units: mg/kg (ppm) Operator: MB Lower Upper Surrogates: % Recovery: Limit: Limit: Dibromofluoromethane 93 32 147 1,2-Dichloroethane-d4 95 35 150 Toluene-d8 94 35 149 4-Bromofluorobenzene 97 15 196 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Dichlorodifluoromethane <0.5 1,3-Dichloropropane <0.05 Chloromethane <0.05 Tetrachloroethene <0.025 Vinyl chloride <0.05 Dibromochloromethane <0.05 Bromomethane <0.5 1,2-Dibromoethane (EDB) <0.05 Chloroethane <0.5 Chlorobenzene <0.05 Trichlorofluoromethane <0.5 Ethylbenzene <0.05 Acetone <0.5 1,1,1,2-Tetrachloroethane <0.05 1,1-Dichloroethene <0.05 m,p-Xylene <0.1 Methylene chloride <0.5 o-Xylene <0.05 Methyl t-butyl ether (MTBE) <0.05 Styrene <0.05 trans-1,2-Dichloroethene <0.05 Isopropylbenzene <0.05 1,1-Dichloroethane <0.05 Bromoform <0.05 2,2-Dichloropropane <0.05 n-Propylbenzene <0.05 cis-1,2-Dichloroethene <0.05 Bromobenzene <0.05 Chloroform <0.05 1,3,5-Trimethylbenzene <0.05 2-Butanone (MEK) <0.5 1,1,2,2-Tetrachloroethane <0.05 1,2-Dichloroethane (EDC) <0.05 1,2,3-Trichloropropane <0.05 1,1,1-Trichloroethane <0.05 2-Chlorotoluene <0.05 1,1-Dichloropropene <0.05 4-Chlorotoluene <0.05 Carbon Tetrachloride <0.05 tert-Butylbenzene <0.05 Benzene <0.03 1,2,4-Trimethylbenzene <0.05 Trichloroethene <0.03 sec-Butylbenzene <0.05 1,2-Dichloropropane <0.05 p-Isopropyltoluene <0.05 Bromodichloromethane <0.05 1,3-Dichlorobenzene <0.05 Dibromomethane <0.05 1,4-Dichlorobenzene <0.05 4-Methyl-2-pentanone <0.5 1,2-Dichlorobenzene <0.05 cis-1,3-Dichloropropene <0.05 1,2-Dibromo-3-chloropropane <0.05 Toluene <0.05 1,2,4-Trichlorobenzene <0.1 trans-1,3-Dichloropropene <0.05 Hexachlorobutadiene <0.1 1,1,2-Trichloroethane <0.05 Naphthalene 0.061 2-Hexanone <0.5 1,2,3-Trichlorobenzene <0.1 n-Butylbenzene <0.5 L Dichloroethyl ether <0.5 L

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

4

Analysis For Volatile Compounds By EPA Method 8260B Client Sample ID: GS21-7 Client: Evren Northwest, Inc. Date Received: 02/04/08 Project: 351-05009-06, F&BI 802013 Date Extracted: 02/04/08 Lab ID: 802013-02 Date Analyzed: 02/04/08 Data File: 020407.D Matrix: Soil Instrument: GCMS5 Units: mg/kg (ppm) Operator: MB Lower Upper Surrogates: % Recovery: Limit: Limit: Dibromofluoromethane 96 32 147 1,2-Dichloroethane-d4 100 35 150 Toluene-d8 97 35 149 4-Bromofluorobenzene 99 15 196 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Dichlorodifluoromethane <0.5 1,3-Dichloropropane <0.05 Chloromethane <0.05 Tetrachloroethene <0.025 Vinyl chloride <0.05 Dibromochloromethane <0.05 Bromomethane <0.5 1,2-Dibromoethane (EDB) <0.05 Chloroethane <0.5 Chlorobenzene <0.05 Trichlorofluoromethane <0.5 Ethylbenzene <0.05 Acetone <0.5 1,1,1,2-Tetrachloroethane <0.05 1,1-Dichloroethene <0.05 m,p-Xylene <0.1 Methylene chloride <0.5 o-Xylene <0.05 Methyl t-butyl ether (MTBE) <0.05 Styrene <0.05 trans-1,2-Dichloroethene <0.05 Isopropylbenzene <0.05 1,1-Dichloroethane <0.05 Bromoform <0.05 2,2-Dichloropropane <0.05 n-Propylbenzene <0.05 cis-1,2-Dichloroethene <0.05 Bromobenzene <0.05 Chloroform <0.05 1,3,5-Trimethylbenzene <0.05 2-Butanone (MEK) <0.5 1,1,2,2-Tetrachloroethane <0.05 1,2-Dichloroethane (EDC) <0.05 1,2,3-Trichloropropane <0.05 1,1,1-Trichloroethane <0.05 2-Chlorotoluene <0.05 1,1-Dichloropropene <0.05 4-Chlorotoluene <0.05 Carbon Tetrachloride <0.05 tert-Butylbenzene <0.05 Benzene <0.03 1,2,4-Trimethylbenzene <0.05 Trichloroethene <0.03 sec-Butylbenzene <0.05 1,2-Dichloropropane <0.05 p-Isopropyltoluene <0.05 Bromodichloromethane <0.05 1,3-Dichlorobenzene <0.05 Dibromomethane <0.05 1,4-Dichlorobenzene <0.05 4-Methyl-2-pentanone <0.5 1,2-Dichlorobenzene <0.05 cis-1,3-Dichloropropene <0.05 1,2-Dibromo-3-chloropropane <0.05 Toluene <0.05 1,2,4-Trichlorobenzene <0.1 trans-1,3-Dichloropropene <0.05 Hexachlorobutadiene <0.1 1,1,2-Trichloroethane <0.05 Naphthalene <0.05 2-Hexanone <0.5 1,2,3-Trichlorobenzene <0.1 n-Butylbenzene <0.5 L Dichloroethyl ether <0.5 L

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

5

Analysis For Volatile Compounds By EPA Method 8260B Client Sample ID: GS22-5 Client: Evren Northwest, Inc. Date Received: 02/04/08 Project: 351-05009-06, F&BI 802013 Date Extracted: 02/04/08 Lab ID: 802013-03 Date Analyzed: 02/04/08 Data File: 020408.D Matrix: Soil Instrument: GCMS5 Units: mg/kg (ppm) Operator: MB Lower Upper Surrogates: % Recovery: Limit: Limit: Dibromofluoromethane 117 32 147 1,2-Dichloroethane-d4 118 35 150 Toluene-d8 118 35 149 4-Bromofluorobenzene 119 15 196 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Dichlorodifluoromethane <0.5 1,3-Dichloropropane <0.05 Chloromethane <0.05 Tetrachloroethene <0.025 Vinyl chloride <0.05 Dibromochloromethane <0.05 Bromomethane <0.5 1,2-Dibromoethane (EDB) <0.05 Chloroethane <0.5 Chlorobenzene <0.05 Trichlorofluoromethane <0.5 Ethylbenzene <0.05 Acetone <0.5 1,1,1,2-Tetrachloroethane <0.05 1,1-Dichloroethene <0.05 m,p-Xylene <0.1 Methylene chloride <0.5 o-Xylene <0.05 Methyl t-butyl ether (MTBE) <0.05 Styrene <0.05 trans-1,2-Dichloroethene <0.05 Isopropylbenzene <0.05 1,1-Dichloroethane <0.05 Bromoform <0.05 2,2-Dichloropropane <0.05 n-Propylbenzene <0.05 cis-1,2-Dichloroethene 0.14 Bromobenzene <0.05 Chloroform <0.05 1,3,5-Trimethylbenzene <0.05 2-Butanone (MEK) <0.5 1,1,2,2-Tetrachloroethane <0.05 1,2-Dichloroethane (EDC) <0.05 1,2,3-Trichloropropane <0.05 1,1,1-Trichloroethane <0.05 2-Chlorotoluene <0.05 1,1-Dichloropropene <0.05 4-Chlorotoluene <0.05 Carbon Tetrachloride <0.05 tert-Butylbenzene <0.05 Benzene <0.03 1,2,4-Trimethylbenzene <0.05 Trichloroethene <0.03 sec-Butylbenzene <0.05 1,2-Dichloropropane <0.05 p-Isopropyltoluene <0.05 Bromodichloromethane <0.05 1,3-Dichlorobenzene <0.05 Dibromomethane <0.05 1,4-Dichlorobenzene <0.05 4-Methyl-2-pentanone <0.5 1,2-Dichlorobenzene <0.05 cis-1,3-Dichloropropene <0.05 1,2-Dibromo-3-chloropropane <0.05 Toluene <0.05 1,2,4-Trichlorobenzene <0.1 trans-1,3-Dichloropropene <0.05 Hexachlorobutadiene <0.1 1,1,2-Trichloroethane <0.05 Naphthalene 0.066 2-Hexanone <0.5 1,2,3-Trichlorobenzene <0.1 n-Butylbenzene <0.5 L Dichloroethyl ether <0.5 L

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

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Analysis For Volatile Compounds By EPA Method 8260B Client Sample ID: GS23-6 Client: Evren Northwest, Inc. Date Received: 02/04/08 Project: 351-05009-06, F&BI 802013 Date Extracted: 02/04/08 Lab ID: 802013-04 Date Analyzed: 02/04/08 Data File: 020409.D Matrix: Soil Instrument: GCMS5 Units: mg/kg (ppm) Operator: MB Lower Upper Surrogates: % Recovery: Limit: Limit: Dibromofluoromethane 98 32 147 1,2-Dichloroethane-d4 99 35 150 Toluene-d8 98 35 149 4-Bromofluorobenzene 98 15 196 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Dichlorodifluoromethane <0.5 1,3-Dichloropropane <0.05 Chloromethane <0.05 Tetrachloroethene <0.025 Vinyl chloride <0.05 Dibromochloromethane <0.05 Bromomethane <0.5 1,2-Dibromoethane (EDB) <0.05 Chloroethane <0.5 Chlorobenzene <0.05 Trichlorofluoromethane <0.5 Ethylbenzene <0.05 Acetone <0.5 1,1,1,2-Tetrachloroethane <0.05 1,1-Dichloroethene <0.05 m,p-Xylene <0.1 Methylene chloride <0.5 o-Xylene <0.05 Methyl t-butyl ether (MTBE) <0.05 Styrene <0.05 trans-1,2-Dichloroethene <0.05 Isopropylbenzene <0.05 1,1-Dichloroethane <0.05 Bromoform <0.05 2,2-Dichloropropane <0.05 n-Propylbenzene <0.05 cis-1,2-Dichloroethene <0.05 Bromobenzene <0.05 Chloroform <0.05 1,3,5-Trimethylbenzene <0.05 2-Butanone (MEK) <0.5 1,1,2,2-Tetrachloroethane <0.05 1,2-Dichloroethane (EDC) <0.05 1,2,3-Trichloropropane <0.05 1,1,1-Trichloroethane <0.05 2-Chlorotoluene <0.05 1,1-Dichloropropene <0.05 4-Chlorotoluene <0.05 Carbon Tetrachloride <0.05 tert-Butylbenzene <0.05 Benzene <0.03 1,2,4-Trimethylbenzene <0.05 Trichloroethene <0.03 sec-Butylbenzene <0.05 1,2-Dichloropropane <0.05 p-Isopropyltoluene <0.05 Bromodichloromethane <0.05 1,3-Dichlorobenzene <0.05 Dibromomethane <0.05 1,4-Dichlorobenzene <0.05 4-Methyl-2-pentanone <0.5 1,2-Dichlorobenzene <0.05 cis-1,3-Dichloropropene <0.05 1,2-Dibromo-3-chloropropane <0.05 Toluene <0.05 1,2,4-Trichlorobenzene <0.1 trans-1,3-Dichloropropene <0.05 Hexachlorobutadiene <0.1 1,1,2-Trichloroethane <0.05 Naphthalene 0.087 2-Hexanone <0.5 1,2,3-Trichlorobenzene <0.1 n-Butylbenzene <0.5 L Dichloroethyl ether <0.5 L

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Analysis For Volatile Compounds By EPA Method 8260B Client Sample ID: Method Blank Client: Evren Northwest, Inc. Date Received: Not Applicable Project: 351-05009-06, F&BI 802013 Date Extracted: 02/04/08 Lab ID: 080151 mb Date Analyzed: 02/04/08 Data File: 020405.D Matrix: Soil Instrument: GCMS5 Units: mg/kg (ppm) Operator: MB Lower Upper Surrogates: % Recovery: Limit: Limit: Dibromofluoromethane 98 32 147 1,2-Dichloroethane-d4 98 35 150 Toluene-d8 98 35 149 4-Bromofluorobenzene 103 15 196 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Dichlorodifluoromethane <0.5 1,3-Dichloropropane <0.05 Chloromethane <0.05 Tetrachloroethene <0.025 Vinyl chloride <0.05 Dibromochloromethane <0.05 Bromomethane <0.5 1,2-Dibromoethane (EDB) <0.05 Chloroethane <0.5 Chlorobenzene <0.05 Trichlorofluoromethane <0.5 Ethylbenzene <0.05 Acetone <0.5 1,1,1,2-Tetrachloroethane <0.05 1,1-Dichloroethene <0.05 m,p-Xylene <0.1 Methylene chloride <0.5 o-Xylene <0.05 Methyl t-butyl ether (MTBE) <0.05 Styrene <0.05 trans-1,2-Dichloroethene <0.05 Isopropylbenzene <0.05 1,1-Dichloroethane <0.05 Bromoform <0.05 2,2-Dichloropropane <0.05 n-Propylbenzene <0.05 cis-1,2-Dichloroethene <0.05 Bromobenzene <0.05 Chloroform <0.05 1,3,5-Trimethylbenzene <0.05 2-Butanone (MEK) <0.5 1,1,2,2-Tetrachloroethane <0.05 1,2-Dichloroethane (EDC) <0.05 1,2,3-Trichloropropane <0.05 1,1,1-Trichloroethane <0.05 2-Chlorotoluene <0.05 1,1-Dichloropropene <0.05 4-Chlorotoluene <0.05 Carbon Tetrachloride <0.05 tert-Butylbenzene <0.05 Benzene <0.03 1,2,4-Trimethylbenzene <0.05 Trichloroethene <0.03 sec-Butylbenzene <0.05 1,2-Dichloropropane <0.05 p-Isopropyltoluene <0.05 Bromodichloromethane <0.05 1,3-Dichlorobenzene <0.05 Dibromomethane <0.05 1,4-Dichlorobenzene <0.05 4-Methyl-2-pentanone <0.5 1,2-Dichlorobenzene <0.05 cis-1,3-Dichloropropene <0.05 1,2-Dibromo-3-chloropropane <0.05 Toluene <0.05 1,2,4-Trichlorobenzene <0.1 trans-1,3-Dichloropropene <0.05 Hexachlorobutadiene <0.1 1,1,2-Trichloroethane <0.05 Naphthalene <0.05 2-Hexanone <0.5 1,2,3-Trichlorobenzene <0.1 n-Butylbenzene <0.5 L Dichloroethyl ether <0.5 L

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Date of Report: 02/05/08 Date Received: 02/04/08 Project: Frontier 351-05009-06, F&BI 802013

QUALITY ASSURANCE RESULTS FROM THE ANALYSIS OF SOIL SAMPLES FOR TOTAL PETROLEUM HYDROCARBONS AS

DIESEL EXTENDED USING METHOD NWTPH-Dx Laboratory Code: 802013-02 (Matrix Spike) Analyte

Reporting

Units

Spike Level

Sample Result

(Wet wt)

Percent Recovery

MS

Percent Recovery MSD

Acceptance

Criteria

RPD

(Limit 20) Diesel Extended mg/kg (ppm) 5,000 <50 95 97 69-125 2 Laboratory Code: Laboratory Control Sample Analyte

Reporting Units

Spike Level

Percent Recovery

LCS

Acceptance

Criteria Diesel Extended mg/kg (ppm) 5,000 96 70-127

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Date of Report: 02/05/08 Date Received: 02/04/08 Project: Frontier 351-05009-06, F&BI 802013 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF SOIL SAMPLES

FOR VOLATILES BY EPA METHOD 8260B Laboratory Code: Laboratory Control Sample Analyte

Reporting

Units

Spike Level

Percent Recovery

LCS

Percent Recovery

LCSD

Acceptance

Criteria

RPD

(Limit 20) Dichlorodifluoromethane mg/kg (ppm) 2.5 51 49 29-163 4 Chloromethane mg/kg (ppm) 2.5 76 74 28-147 3 Vinyl chloride mg/kg (ppm) 2.5 87 90 38-143 3 Bromomethane mg/kg (ppm) 2.5 98 103 32-163 5 Chloroethane mg/kg (ppm) 2.5 98 91 10-165 7 Trichlorofluoromethane mg/kg (ppm) 2.5 78 75 22-167 4 Acetone mg/kg (ppm) 2.5 92 105 20-172 13 1,1-Dichloroethene mg/kg (ppm) 2.5 79 83 42-140 5 Methylene chloride mg/kg (ppm) 2.5 93 109 53-137 16 Methyl t-butyl ether (MTBE) mg/kg (ppm) 2.5 99 101 73-122 2 trans-1,2-Dichloroethene mg/kg (ppm) 2.5 95 98 70-122 3 1,1-Dichloroethane mg/kg (ppm) 2.5 100 103 77-114 3 2,2-Dichloropropane mg/kg (ppm) 2.5 101 98 65-135 3 cis-1,2-Dichloroethene mg/kg (ppm) 2.5 98 99 77-120 1 Chloroform mg/kg (ppm) 2.5 101 102 76-117 1 2-Butanone (MEK) mg/kg (ppm) 2.5 101 101 52-153 0 1,2-Dichloroethane (EDC) mg/kg (ppm) 2.5 105 106 76-116 1 1,1,1-Trichloroethane mg/kg (ppm) 2.5 103 105 79-120 2 1,1-Dichloropropene mg/kg (ppm) 2.5 106 104 76-123 2 Carbon Tetrachloride mg/kg (ppm) 2.5 100 100 75-126 0 Benzene mg/kg (ppm) 2.5 101 99 76-118 2 Trichloroethene mg/kg (ppm) 2.5 101 100 75-121 1 1,2-Dichloropropane mg/kg (ppm) 2.5 101 100 78-123 1 Bromodichloromethane mg/kg (ppm) 2.5 96 96 79-126 0 Dibromomethane mg/kg (ppm) 2.5 100 101 79-121 1 4-Methyl -2-pentanone mg/kg (ppm) 2.5 105 105 52-151 0 cis-1,3-Dichloropropene mg/kg (ppm) 2.5 103 101 80-127 2 Toluene mg/kg (ppm) 2.5 106 103 76-122 3 trans-1,3-Dichloropropene mg/kg (ppm) 2.5 103 101 80-126 2 1,1,2-Trichloroethane mg/kg (ppm) 2.5 105 102 77-121 3 2-Hexanone mg/kg (ppm) 2.5 103 103 67-126 0 1,3-Dichloropropane mg/kg (ppm) 2.5 100 98 76-122 2 Tetrachloroethene mg/kg (ppm) 2.5 110 107 77-124 3 Dibromochloromethane mg/kg (ppm) 2.5 100 100 73-127 0 1,2-Dibromoethane (EDB) mg/kg (ppm) 2.5 102 103 78-126 1 Chlorobenzene mg/kg (ppm) 2.5 98 97 79-113 1 Ethylbenzene mg/kg (ppm) 2.5 103 100 77-120 3 1,1,1,2-Tetrachloroethane mg/kg (ppm) 2.5 102 102 79-125 0 m,p-Xylene mg/kg (ppm) 5 104 103 79-121 1 o-Xylene mg/kg (ppm) 2.5 101 101 80-123 0 Styrene mg/kg (ppm) 2.5 103 103 81-124 0 Isopropylbenzene mg/kg (ppm) 2.5 101 100 79-123 1 Bromoform mg/kg (ppm) 2.5 107 106 65-124 1 n-Propylbenzene mg/kg (ppm) 2.5 97 94 77-123 3 Bromobenzene mg/kg (ppm) 2.5 93 92 78-122 1 1,3,5-Trimethylbenzene mg/kg (ppm) 2.5 94 92 79-123 2 1,1,2,2-Tetrachloroethane mg/kg (ppm) 2.5 91 90 73-121 1 1,2,3-Trichloropropane mg/kg (ppm) 2.5 93 92 69-123 1 2-Chlorotoluene mg/kg (ppm) 2.5 92 89 77-120 3 4-Chlorotoluene mg/kg (ppm) 2.5 97 95 77-121 2 tert-Butylbenzene mg/kg (ppm) 2.5 93 90 77-124 3 1,2,4-Trimethylbenzene mg/kg (ppm) 2.5 93 92 78-123 1 sec-Butylbenzene mg/kg (ppm) 2.5 96 94 77-122 2 p-Isopropyltoluene mg/kg (ppm) 2.5 97 95 79-126 2 1,3-Dichlorobenzene mg/kg (ppm) 2.5 91 90 78-119 1 1,4-Dichlorobenzene mg/kg (ppm) 2.5 95 93 77-114 2 1,2-Dichlorobenzene mg/kg (ppm) 2.5 93 93 78-120 0 1,2-Dibromo-3-chloropropane mg/kg (ppm) 2.5 92 94 66-133 2 1,2,4-Trichlorobenzene mg/kg (ppm) 2.5 94 96 71-129 2 Hexachlorobutadiene mg/kg (ppm) 2.5 108 107 65-134 1 Naphthalene mg/kg (ppm) 2.5 91 95 51-158 4 1,2,3-Trichlorobenzene mg/kg (ppm) 2.5 94 96 37-182 2

Note: The calibration verification result for trichlorofluoromethane exceeded 15% deviation. The average deviation for all compounds was not greater than 15%; therefore, the calibration is considered valid. Note: The initial calibration verification result for trichlorofluoromethane and hexachlorobutadiene exceeded 15% deviation. The average deviation for all compounds was not greater than 15%; therefore, the calibration is considered valid.

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Data Qualifiers & Definitions a - The analyte was detected at a level less than five times the reporting limit. The RPD results may not provide reliable information on the variability of the analysis.

A1 – More than one compound of similar molecule structure was identified with equal probablility.

b - The analyte was spiked at a level that was less than five times that present in the sample. Matrix spike recoveries may not be meaningful.

ca - The calibration results for this range fell outside of acceptance criteria. The value reported is an estimate.

c - The presence of the analyte indicated may be due to carryover from previous sample injections.

d - The sample was diluted. Detection limits may be raised due to dilution.

ds - The sample was diluted. Detection limits are raised due to dilution and surrogate recoveries may not be meaningful.

dv - Insufficient sample was available to achieve normal reporting limits and limits are raised accordingly.

fb - The analyte indicated was found in the method blank. The result should be considered an estimate.

fc – The compound is a common laboratory and field contaminant.

hr - The sample and duplicate were reextracted and reanalyzed. RPD results were still outside of control limits. The variability is attributed to sample inhomogeneity.

ht - The sample was extracted outside of holding time. Results should be considered estimates.

ip - Recovery fell outside of normal control limits. Compounds in the sample matrix interfered with the quantitation of the analyte.

j – The result is below normal reporting limits. The value reported is an estimate.

J - The internal standard associated with the analyte is out of control limits. The reported concentration is an estimate.

jl - The analyte result in the laboratory control sample is out of control limits. The reported concentration should be considered an estimate.

jr - The rpd result in laboratory control sample associated with the analyte is out of control limits. The reported concentration should be considered an estimate.

js - The surrogate associated with the analyte is out of control limits. The reported concentration should be considered an estimate.

lc - The presence of the compound indicated is likely due to laboratory contamination.

L - The reported concentration was generated from a library search.

nm - The analyte was not detected in one or more of the duplicate analyses. Therefore, calculation of the RPD is not applicable.

pc – The sample was received in a container not approved by the method. The value reported should be considered an estimate.

pr – The sample was received with incorrect preservation. The value reported should be considered an estimate.

ve - The value reported exceeded the calibration range established for the analyte. The reported concentration should be considered an estimate.

vo - The value reported fell outside the control limits established for this analyte.

x - The pattern of peaks present is not indicative of diesel.

y - The pattern of peaks present is not indicative of motor oil.

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

James E. Bruya, Ph.D. 3012 16th Avenue West Charlene Morrow, M.S. Seattle, WA 98119-2029 Yelena Aravkina, M.S. TEL: (206) 285-8282 Bradley T. Benson, B.S. FAX: (206) 283-5044 Kurt Johnson, B.S. e-mail: fbi@isomedia.com

February 4, 2008 Lynn Green, Project Manager Evren Northwest, Inc. PO Box 80747 Portland, OR 97280 Dear Mr. Green: Included are the results from the testing of material submitted on February 1, 2008 from the Frontier L. 351-05009-06, F&BI 802001 project. There are 9 pages included in this report. Any samples that may remain are currently scheduled for disposal in 30 days. If you would like us to return your samples or arrange for long term storage at our offices, please contact us as soon as possible. We appreciate this opportunity to be of service to you and hope you will call if you should have any questions. Sincerely, FRIEDMAN & BRUYA, INC.

Bradley T. Benson Chemist Enclosures c: Neil Woller, Mike Krzeminski ENW0204R.DOC

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CASE NARRATIVE This case narrative encompasses samples received on February 1, 2008 by Friedman & Bruya, Inc. from the Evren Northwest, Inc. Frontier L. 351-05009-06, F&BI 802001 project. Samples were logged in under the laboratory ID’s listed below. Laboratory ID Evren Northwest, Inc. 802001-01 GS16-5-BOT 802001-02 GS17-5 802001-03 GS18-5 802001-04 GS19-4.5 All quality control requirements were acceptable.

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Date of Report: 02/04/08 Date Received: 02/01/08 Project: Frontier L. 351-05009-06, F&BI 802001 Date Extracted: 02/01/08 Date Analyzed: 02/01/08

RESULTS FROM THE ANALYSIS OF THE SOIL SAMPLES FOR TOTAL PETROLEUM HYDROCARBONS AS

DIESEL AND RESIDUAL RANGE USING METHOD NWTPH-Dx

Results Reported on a Dry Weight Basis Results Reported as mg/kg (ppm)

Surrogate Sample ID Diesel Range Residual Range (% Recovery) Laboratory ID (C10-C25) (C25-C36) (Limit 50-150) GS16-5-BOT <50 <250 78 802001-01 GS17-5 <50 <250 78 802001-02 GS19-4.5 <50 <250 91 802001-04 Method Blank <50 <250 84

FRIEDMAN & BRUYA, INC. _________________________________________________

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Analysis For Volatile Compounds By EPA Method 8260B Client Sample ID: GS16-5-BOT Client: Evren Northwest, Inc. Date Received: 02/01/08 Project: 351-05009-06, F&BI 802001 Date Extracted: 02/01/08 Lab ID: 802001-01 Date Analyzed: 02/03/08 Data File: 020218.D Matrix: Soil Instrument: GCMS5 Units: mg/kg (ppm) Operator: MB Lower Upper Surrogates: % Recovery: Limit: Limit: Dibromofluoromethane 91 32 147 1,2-Dichloroethane-d4 93 35 150 Toluene-d8 90 35 149 4-Bromofluorobenzene 110 15 196 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Dichlorodifluoromethane <0.5 1,3-Dichloropropane <0.05 Chloromethane <0.05 Tetrachloroethene <0.025 Vinyl chloride <0.05 Dibromochloromethane <0.05 Bromomethane <0.5 1,2-Dibromoethane (EDB) <0.05 Chloroethane <0.5 Chlorobenzene <0.05 Trichlorofluoromethane <0.5 Ethylbenzene <0.05 Acetone <0.5 1,1,1,2-Tetrachloroethane <0.05 1,1-Dichloroethene <0.05 m,p-Xylene <0.1 Methylene chloride <0.5 o-Xylene <0.05 Methyl t-butyl ether (MTBE) <0.05 Styrene <0.05 trans-1,2-Dichloroethene <0.05 Isopropylbenzene <0.05 1,1-Dichloroethane <0.05 Bromoform <0.05 2,2-Dichloropropane <0.05 n-Propylbenzene <0.05 cis-1,2-Dichloroethene <0.05 Bromobenzene <0.05 Chloroform <0.05 1,3,5-Trimethylbenzene <0.05 2-Butanone (MEK) <0.5 1,1,2,2-Tetrachloroethane <0.05 1,2-Dichloroethane (EDC) <0.05 1,2,3-Trichloropropane <0.05 1,1,1-Trichloroethane <0.05 2-Chlorotoluene <0.05 1,1-Dichloropropene <0.05 4-Chlorotoluene <0.05 Carbon Tetrachloride <0.05 tert-Butylbenzene <0.05 Benzene <0.03 1,2,4-Trimethylbenzene <0.05 Trichloroethene <0.03 sec-Butylbenzene <0.05 1,2-Dichloropropane <0.05 p-Isopropyltoluene <0.05 Bromodichloromethane <0.05 1,3-Dichlorobenzene <0.05 Dibromomethane <0.05 1,4-Dichlorobenzene <0.05 4-Methyl-2-pentanone <0.5 1,2-Dichlorobenzene <0.05 cis-1,3-Dichloropropene <0.05 1,2-Dibromo-3-chloropropane <0.05 Toluene <0.05 1,2,4-Trichlorobenzene <0.1 trans-1,3-Dichloropropene <0.05 Hexachlorobutadiene <0.1 1,1,2-Trichloroethane <0.05 Naphthalene <0.05 2-Hexanone <0.5 1,2,3-Trichlorobenzene <0.1 n-Butylbenzene <0.5 L Dichloroethyl ether <0.5 L

FRIEDMAN & BRUYA, INC. _________________________________________________

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Analysis For Volatile Compounds By EPA Method 8260B Client Sample ID: GS17-5 Client: Evren Northwest, Inc. Date Received: 02/01/08 Project: 351-05009-06, F&BI 802001 Date Extracted: 02/01/08 Lab ID: 802001-02 Date Analyzed: 02/03/08 Data File: 020219.D Matrix: Soil Instrument: GCMS5 Units: mg/kg (ppm) Operator: MB Lower Upper Surrogates: % Recovery: Limit: Limit: Dibromofluoromethane 76 32 147 1,2-Dichloroethane-d4 80 35 150 Toluene-d8 70 35 149 4-Bromofluorobenzene 95 15 196 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Dichlorodifluoromethane <0.5 1,3-Dichloropropane <0.05 Chloromethane <0.05 Tetrachloroethene <0.025 Vinyl chloride <0.05 Dibromochloromethane <0.05 Bromomethane <0.5 1,2-Dibromoethane (EDB) <0.05 Chloroethane <0.5 Chlorobenzene <0.05 Trichlorofluoromethane <0.5 Ethylbenzene <0.05 Acetone <0.5 1,1,1,2-Tetrachloroethane <0.05 1,1-Dichloroethene <0.05 m,p-Xylene <0.1 Methylene chloride <0.5 o-Xylene <0.05 Methyl t-butyl ether (MTBE) <0.05 Styrene <0.05 trans-1,2-Dichloroethene <0.05 Isopropylbenzene <0.05 1,1-Dichloroethane <0.05 Bromoform <0.05 2,2-Dichloropropane <0.05 n-Propylbenzene <0.05 cis-1,2-Dichloroethene <0.05 Bromobenzene <0.05 Chloroform <0.05 1,3,5-Trimethylbenzene <0.05 2-Butanone (MEK) <0.5 1,1,2,2-Tetrachloroethane <0.05 1,2-Dichloroethane (EDC) <0.05 1,2,3-Trichloropropane <0.05 1,1,1-Trichloroethane <0.05 2-Chlorotoluene <0.05 1,1-Dichloropropene <0.05 4-Chlorotoluene <0.05 Carbon Tetrachloride <0.05 tert-Butylbenzene <0.05 Benzene <0.03 1,2,4-Trimethylbenzene <0.05 Trichloroethene <0.03 sec-Butylbenzene <0.05 1,2-Dichloropropane <0.05 p-Isopropyltoluene <0.05 Bromodichloromethane <0.05 1,3-Dichlorobenzene <0.05 Dibromomethane <0.05 1,4-Dichlorobenzene <0.05 4-Methyl-2-pentanone <0.5 1,2-Dichlorobenzene <0.05 cis-1,3-Dichloropropene <0.05 1,2-Dibromo-3-chloropropane <0.05 Toluene <0.05 1,2,4-Trichlorobenzene <0.1 trans-1,3-Dichloropropene <0.05 Hexachlorobutadiene <0.1 1,1,2-Trichloroethane <0.05 Naphthalene <0.05 2-Hexanone <0.5 1,2,3-Trichlorobenzene <0.1 n-Butylbenzene <0.5 L Dichloroethyl ether <0.5 L

FRIEDMAN & BRUYA, INC. _________________________________________________

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Analysis For Volatile Compounds By EPA Method 8260B Client Sample ID: GS19-4.5 Client: Evren Northwest, Inc. Date Received: 02/01/08 Project: 351-05009-06, F&BI 802001 Date Extracted: 02/01/08 Lab ID: 802001-04 Date Analyzed: 02/04/08 Data File: 020220.D Matrix: Soil Instrument: GCMS5 Units: mg/kg (ppm) Operator: MB Lower Upper Surrogates: % Recovery: Limit: Limit: Dibromofluoromethane 54 32 147 1,2-Dichloroethane-d4 61 35 150 Toluene-d8 46 35 149 4-Bromofluorobenzene 77 15 196 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Dichlorodifluoromethane <0.5 1,3-Dichloropropane <0.05 Chloromethane <0.05 Tetrachloroethene <0.025 Vinyl chloride <0.05 Dibromochloromethane <0.05 Bromomethane <0.5 1,2-Dibromoethane (EDB) <0.05 Chloroethane <0.5 Chlorobenzene <0.05 Trichlorofluoromethane <0.5 Ethylbenzene <0.05 Acetone <0.5 1,1,1,2-Tetrachloroethane <0.05 1,1-Dichloroethene <0.05 m,p-Xylene <0.1 Methylene chloride <0.5 o-Xylene <0.05 Methyl t-butyl ether (MTBE) <0.05 Styrene <0.05 trans-1,2-Dichloroethene <0.05 Isopropylbenzene <0.05 1,1-Dichloroethane <0.05 Bromoform <0.05 2,2-Dichloropropane <0.05 n-Propylbenzene <0.05 cis-1,2-Dichloroethene <0.05 Bromobenzene <0.05 Chloroform <0.05 1,3,5-Trimethylbenzene <0.05 2-Butanone (MEK) <0.5 1,1,2,2-Tetrachloroethane <0.05 1,2-Dichloroethane (EDC) <0.05 1,2,3-Trichloropropane <0.05 1,1,1-Trichloroethane <0.05 2-Chlorotoluene <0.05 1,1-Dichloropropene <0.05 4-Chlorotoluene <0.05 Carbon Tetrachloride <0.05 tert-Butylbenzene <0.05 Benzene <0.03 1,2,4-Trimethylbenzene <0.05 Trichloroethene <0.03 sec-Butylbenzene <0.05 1,2-Dichloropropane <0.05 p-Isopropyltoluene <0.05 Bromodichloromethane <0.05 1,3-Dichlorobenzene <0.05 Dibromomethane <0.05 1,4-Dichlorobenzene <0.05 4-Methyl-2-pentanone <0.5 1,2-Dichlorobenzene <0.05 cis-1,3-Dichloropropene <0.05 1,2-Dibromo-3-chloropropane <0.05 Toluene <0.05 1,2,4-Trichlorobenzene <0.1 trans-1,3-Dichloropropene <0.05 Hexachlorobutadiene <0.1 1,1,2-Trichloroethane <0.05 Naphthalene <0.05 2-Hexanone <0.5 1,2,3-Trichlorobenzene <0.1 n-Butylbenzene <0.5 L Dichloroethyl ether <0.5 L

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

6

Analysis For Volatile Compounds By EPA Method 8260B Client Sample ID: Method Blank Client: Evren Northwest, Inc. Date Received: Not Applicable Project: 351-05009-06, F&BI 802001 Date Extracted: 02/01/08 Lab ID: 080150 mb Date Analyzed: 02/03/08 Data File: 020216.D Matrix: Soil Instrument: GCMS5 Units: mg/kg (ppm) Operator: MB Lower Upper Surrogates: % Recovery: Limit: Limit: Dibromofluoromethane 98 32 147 1,2-Dichloroethane-d4 101 35 150 Toluene-d8 96 35 149 4-Bromofluorobenzene 107 15 196 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Dichlorodifluoromethane <0.5 1,3-Dichloropropane <0.05 Chloromethane <0.05 Tetrachloroethene <0.025 Vinyl chloride <0.05 Dibromochloromethane <0.05 Bromomethane <0.5 1,2-Dibromoethane (EDB) <0.05 Chloroethane <0.5 Chlorobenzene <0.05 Trichlorofluoromethane <0.5 Ethylbenzene <0.05 Acetone <0.5 1,1,1,2-Tetrachloroethane <0.05 1,1-Dichloroethene <0.05 m,p-Xylene <0.1 Methylene chloride <0.5 o-Xylene <0.05 Methyl t-butyl ether (MTBE) <0.05 Styrene <0.05 trans-1,2-Dichloroethene <0.05 Isopropylbenzene <0.05 1,1-Dichloroethane <0.05 Bromoform <0.05 2,2-Dichloropropane <0.05 n-Propylbenzene <0.05 cis-1,2-Dichloroethene <0.05 Bromobenzene <0.05 Chloroform <0.05 1,3,5-Trimethylbenzene <0.05 2-Butanone (MEK) <0.5 1,1,2,2-Tetrachloroethane <0.05 1,2-Dichloroethane (EDC) <0.05 1,2,3-Trichloropropane <0.05 1,1,1-Trichloroethane <0.05 2-Chlorotoluene <0.05 1,1-Dichloropropene <0.05 4-Chlorotoluene <0.05 Carbon Tetrachloride <0.05 tert-Butylbenzene <0.05 Benzene <0.03 1,2,4-Trimethylbenzene <0.05 Trichloroethene <0.03 sec-Butylbenzene <0.05 1,2-Dichloropropane <0.05 p-Isopropyltoluene <0.05 Bromodichloromethane <0.05 1,3-Dichlorobenzene <0.05 Dibromomethane <0.05 1,4-Dichlorobenzene <0.05 4-Methyl-2-pentanone <0.5 1,2-Dichlorobenzene <0.05 cis-1,3-Dichloropropene <0.05 1,2-Dibromo-3-chloropropane <0.05 Toluene <0.05 1,2,4-Trichlorobenzene <0.1 trans-1,3-Dichloropropene <0.05 Hexachlorobutadiene <0.1 1,1,2-Trichloroethane <0.05 Naphthalene <0.05 2-Hexanone <0.5 1,2,3-Trichlorobenzene <0.1 n-Butylbenzene <0.5 L Dichloroethyl ether <0.5 L

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

7

Date of Report: 02/04/08 Date Received: 02/01/08 Project: Frontier L. 351-05009-06, F&BI 802001

QUALITY ASSURANCE RESULTS FROM THE ANALYSIS OF SOIL SAMPLES FOR TOTAL PETROLEUM HYDROCARBONS AS

DIESEL EXTENDED USING METHOD NWTPH-Dx Laboratory Code: 801286-03 (Matrix Spike) Analyte

Reporting

Units

Spike Level

Sample Result

(Wet wt)

Percent Recovery

MS

Percent Recovery MSD

Acceptance

Criteria

RPD

(Limit 20) Diesel Extended mg/kg (ppm) 5,000 <50 99 99 50-150 0 Laboratory Code: Laboratory Control Sample Analyte

Reporting

Units

Spike Level

Percent Recovery

LCS

Acceptance

Criteria Diesel Extended mg/kg (ppm) 5,000 109 70-130

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

8

Date of Report: 02/04/08 Date Received: 02/01/08 Project: Frontier L. 351-05009-06, F&BI 802001 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF SOIL SAMPLES

FOR VOLATILES BY EPA METHOD 8260B Laboratory Code: Laboratory Control Sample Analyte

Reporting

Units

Spike Level

Percent Recovery

LCS

Percent Recovery

LCSD

Acceptance

Criteria

RPD

(Limit 20) Dichlorodifluoromethane mg/kg (ppm) 2.5 93 102 29-163 9 Chloromethane mg/kg (ppm) 2.5 94 94 28-147 0 Vinyl chloride mg/kg (ppm) 2.5 105 102 38-143 3 Bromomethane mg/kg (ppm) 2.5 108 103 32-163 5 Chloroethane mg/kg (ppm) 2.5 90 87 10-165 3 Trichlorofluoromethane mg/kg (ppm) 2.5 73 80 22-167 9 Acetone mg/kg (ppm) 2.5 100 98 20-172 2 1,1-Dichloroethene mg/kg (ppm) 2.5 84 92 42-140 9 Methylene chloride mg/kg (ppm) 2.5 106 97 53-137 9 Methyl t-butyl ether (MTBE) mg/kg (ppm) 2.5 99 95 73-122 4 trans-1,2-Dichloroethene mg/kg (ppm) 2.5 98 95 70-122 3 1,1-Dichloroethane mg/kg (ppm) 2.5 99 100 77-114 1 2,2-Dichloropropane mg/kg (ppm) 2.5 92 92 65-135 0 cis-1,2-Dichloroethene mg/kg (ppm) 2.5 99 99 77-120 0 Chloroform mg/kg (ppm) 2.5 100 98 76-117 2 2-Butanone (MEK) mg/kg (ppm) 2.5 98 101 52-153 3 1,2-Dichloroethane (EDC) mg/kg (ppm) 2.5 99 97 76-116 2 1,1,1-Trichloroethane mg/kg (ppm) 2.5 101 99 79-120 2 1,1-Dichloropropene mg/kg (ppm) 2.5 103 100 76-123 3 Carbon Tetrachloride mg/kg (ppm) 2.5 98 98 75-126 0 Benzene mg/kg (ppm) 2.5 100 98 76-118 2 Trichloroethene mg/kg (ppm) 2.5 98 96 75-121 2 1,2-Dichloropropane mg/kg (ppm) 2.5 100 97 78-123 3 Bromodichloromethane mg/kg (ppm) 2.5 96 93 79-126 3 Dibromomethane mg/kg (ppm) 2.5 98 98 79-121 0 4-Methyl -2-pentanone mg/kg (ppm) 2.5 99 96 52-151 3 cis-1,3-Dichloropropene mg/kg (ppm) 2.5 100 97 80-127 3 Toluene mg/kg (ppm) 2.5 103 101 76-122 2 trans-1,3-Dichloropropene mg/kg (ppm) 2.5 99 97 80-126 2 1,1,2-Trichloroethane mg/kg (ppm) 2.5 101 101 77-121 0 2-Hexanone mg/kg (ppm) 2.5 97 94 67-126 3 1,3-Dichloropropane mg/kg (ppm) 2.5 98 95 76-122 3 Tetrachloroethene mg/kg (ppm) 2.5 102 99 77-124 3 Dibromochloromethane mg/kg (ppm) 2.5 101 99 73-127 2 1,2-Dibromoethane (EDB) mg/kg (ppm) 2.5 101 100 78-126 1 Chlorobenzene mg/kg (ppm) 2.5 97 95 79-113 2 Ethylbenzene mg/kg (ppm) 2.5 99 97 77-120 2 1,1,1,2-Tetrachloroethane mg/kg (ppm) 2.5 101 98 79-125 3 m,p-Xylene mg/kg (ppm) 5 101 99 79-121 2 o-Xylene mg/kg (ppm) 2.5 101 99 80-123 2 Styrene mg/kg (ppm) 2.5 103 100 81-124 3 Isopropylbenzene mg/kg (ppm) 2.5 98 97 79-123 1 Bromoform mg/kg (ppm) 2.5 101 99 65-124 2 n-Propylbenzene mg/kg (ppm) 2.5 99 97 77-123 2 Bromobenzene mg/kg (ppm) 2.5 100 98 78-122 2 1,3,5-Trimethylbenzene mg/kg (ppm) 2.5 98 96 79-123 2 1,1,2,2-Tetrachloroethane mg/kg (ppm) 2.5 97 96 73-121 1 1,2,3-Trichloropropane mg/kg (ppm) 2.5 98 97 69-123 1 2-Chlorotoluene mg/kg (ppm) 2.5 96 95 77-120 1 4-Chlorotoluene mg/kg (ppm) 2.5 102 99 77-121 3 tert-Butylbenzene mg/kg (ppm) 2.5 97 96 77-124 1 1,2,4-Trimethylbenzene mg/kg (ppm) 2.5 97 96 78-123 1 sec-Butylbenzene mg/kg (ppm) 2.5 100 100 77-122 0 p-Isopropyltoluene mg/kg (ppm) 2.5 100 99 79-126 1 1,3-Dichlorobenzene mg/kg (ppm) 2.5 96 94 78-119 2 1,4-Dichlorobenzene mg/kg (ppm) 2.5 100 99 77-114 1 1,2-Dichlorobenzene mg/kg (ppm) 2.5 100 98 78-120 2 1,2-Dibromo-3-chloropropane mg/kg (ppm) 2.5 102 99 66-133 3 1,2,4-Trichlorobenzene mg/kg (ppm) 2.5 101 99 71-129 2 Hexachlorobutadiene mg/kg (ppm) 2.5 100 100 65-134 0 Naphthalene mg/kg (ppm) 2.5 101 98 51-158 3 1,2,3-Trichlorobenzene mg/kg (ppm) 2.5 103 101 37-182 2

Note: The initial calibration verification result for trichlorofluoromethane and hexachlorobutadiene exceeded 15% deviation. The average deviation for all compounds was not greater than 15%; therefore, the calibration is considered valid.

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

9

Data Qualifiers & Definitions a - The analyte was detected at a level less than five times the reporting limit. The RPD results may not provide reliable information on the variability of the analysis.

A1 – More than one compound of similar molecule structure was identified with equal probablility.

b - The analyte was spiked at a level that was less than five times that present in the sample. Matrix spike recoveries may not be meaningful.

ca - The calibration results for this range fell outside of acceptance criteria. The value reported is an estimate.

c - The presence of the analyte indicated may be due to carryover from previous sample injections.

d - The sample was diluted. Detection limits may be raised due to dilution.

ds - The sample was diluted. Detection limits are raised due to dilution and surrogate recoveries may not be meaningful.

dv - Insufficient sample was available to achieve normal reporting limits and limits are raised accordingly.

fb - The analyte indicated was found in the method blank. The result should be considered an estimate.

fc – The compound is a common laboratory and field contaminant.

hr - The sample and duplicate were reextracted and reanalyzed. RPD results were still outside of control limits. The variability is attributed to sample inhomogeneity.

ht - The sample was extracted outside of holding time. Results should be considered estimates.

ip - Recovery fell outside of normal control limits. Compounds in the sample matrix interfered with the quantitation of the analyte.

j – The result is below normal reporting limits. The value reported is an estimate.

J - The internal standard associated with the analyte is out of control limits. The reported concentration is an estimate.

jl - The analyte result in the laboratory control sample is out of control limits. The reported concentration should be considered an estimate.

jr - The rpd result in laboratory control sample associated with the analyte is out of control limits. The reported concentration should be considered an estimate.

js - The surrogate associated with the analyte is out of control limits. The reported concentration should be considered an estimate.

lc - The presence of the compound indicated is likely due to laboratory contamination.

L - The reported concentration was generated from a library search.

nm - The analyte was not detected in one or more of the duplicate analyses. Therefore, calculation of the RPD is not applicable.

pc – The sample was received in a container not approved by the method. The value reported should be considered an estimate.

pr – The sample was received with incorrect preservation. The value reported should be considered an estimate.

ve - The value reported exceeded the calibration range established for the analyte. The reported concentration should be considered an estimate.

vo - The value reported fell outside the control limits established for this analyte.

x - The pattern of peaks present is not indicative of diesel.

y - The pattern of peaks present is not indicative of motor oil.

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

James E. Bruya, Ph.D. 3012 16th Avenue West Charlene Morrow, M.S. Seattle, WA 98119-2029 Yelena Aravkina, M.S. TEL: (206) 285-8282 Bradley T. Benson, B.S. FAX: (206) 283-5044 Kurt Johnson, B.S. e-mail: fbi@isomedia.com

February 4, 2008 Lynn Green, Project Manager Evren Northwest, Inc. PO Box 80747 Portland, OR 97280 Dear Mr. Green: Included are the results from the testing of material submitted on January 28, 2008 from the Frontier Leather 351-05009-06, F&BI 801260 project. There are 6 pages included in this report. Any samples that may remain are currently scheduled for disposal in 30 days. If you would like us to return your samples or arrange for long term storage at our offices, please contact us as soon as possible. We appreciate this opportunity to be of service to you and hope you will call if you should have any questions. Sincerely, FRIEDMAN & BRUYA, INC.

Bradley T. Benson Chemist Enclosures c: Neil Woller, Mike Krzeminski ENW0204R.DOC

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

1

CASE NARRATIVE This case narrative encompasses samples received on January 28, 2008 by Friedman & Bruya, Inc. from the Evren Northwest, Inc. Frontier Leather 351-05009-06, F&BI 801260 project. Samples were logged in under the laboratory ID’s listed below. Laboratory ID Evren Northwest, Inc. 801260-01 DW-080125 All quality control requirements were acceptable.

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

2

Analysis For Semivolatile Compounds By EPA Method 8270C SIM Client Sample ID: DW-080125 Client: Evren Northwest, Inc. Date Received: 01/28/08 Project: 351-05009-06, F&BI 801260 Date Extracted: 01/29/08 Lab ID: 801260-01 Date Analyzed: 01/30/08 Data File: 013011.D Matrix: Water Instrument: GCMS6 Units: ug/L (ppb) Operator: YA Lower Upper Surrogates: % Recovery: Limit: Limit: Anthracene-d10 93 50 150 Benzo(a)anthracene-d12 78 50 129 Concentration Compounds: ug/L (ppb) Naphthalene 51 ve Acenaphthylene <0.05 J Acenaphthene 5.1 J Fluorene 4.2 J Phenanthrene 3.9 Anthracene 0.84 Fluoranthene 0.057 Pyrene 0.11 Benz(a)anthracene <0.05 Chrysene <0.05 Benzo(a)pyrene <0.05 Benzo(b)fluoranthene <0.05 Benzo(k)fluoranthene <0.05 Indeno(1,2,3-cd)pyrene <0.05 Dibenz(a,h)anthracene <0.05 Benzo(g,h,i)perylene <0.05

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

3

Analysis For Semivolatile Compounds By EPA Method 8270C SIM Client Sample ID: DW-080125 Client: Evren Northwest, Inc. Date Received: 01/28/08 Project: 351-05009-06, F&BI 801260 Date Extracted: 01/29/08 Lab ID: 801260-01 1/10 Date Analyzed: 01/30/08 Data File: 013013.D Matrix: Water Instrument: GCMS6 Units: ug/L (ppb) Operator: YA Lower Upper Surrogates: % Recovery: Limit: Limit: Anthracene-d10 119 50 150 Benzo(a)anthracene-d12 87 50 129 Concentration Compounds: ug/L (ppb) Naphthalene 75 Acenaphthylene <0.5 Acenaphthene 6.0 Fluorene 4.3 Phenanthrene 4.1 Anthracene 0.90 Fluoranthene <0.5 Pyrene <0.5 Benz(a)anthracene <0.5 Chrysene <0.5 Benzo(a)pyrene <0.5 Benzo(b)fluoranthene <0.5 Benzo(k)fluoranthene <0.5 Indeno(1,2,3-cd)pyrene <0.5 Dibenz(a,h)anthracene <0.5 Benzo(g,h,i)perylene <0.5

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

4

Analysis For Semivolatile Compounds By EPA Method 8270C SIM Client Sample ID: Method Blank Client: Evren Northwest, Inc. Date Received: Not Applicable Project: 351-05009-06, F&BI 801260 Date Extracted: 01/29/08 Lab ID: 08-139 mb Date Analyzed: 01/30/08 Data File: 013007.D Matrix: Water Instrument: GCMS6 Units: ug/L (ppb) Operator: YA Lower Upper Surrogates: % Recovery: Limit: Limit: Anthracene-d10 95 50 150 Benzo(a)anthracene-d12 81 50 129 Concentration Compounds: ug/L (ppb) Naphthalene <0.05 Acenaphthylene <0.05 Acenaphthene <0.05 Fluorene <0.05 Phenanthrene <0.05 Anthracene <0.05 Fluoranthene <0.05 Pyrene <0.05 Benz(a)anthracene <0.05 Chrysene <0.05 Benzo(a)pyrene <0.05 Benzo(b)fluoranthene <0.05 Benzo(k)fluoranthene <0.05 Indeno(1,2,3-cd)pyrene <0.05 Dibenz(a,h)anthracene <0.05 Benzo(g,h,i)perylene <0.05

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

5

Date of Report: 02/04/08 Date Received: 01/28/08 Project: Frontier Leather 351-05009-06, F&BI 801260

QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF WATER SAMPLES FOR PNA’S BY EPA METHOD 8270C SIM

Laboratory Code: Laboratory Control Sample Analyte

Reporting

Units

Spike Level

Percent Recovery

LCS

Percent Recovery

LCSD

Acceptance

Criteria

RPD

(Limit 20) Naphthalene ug/L (ppb) 5 83 77 68-101 7 Acenaphthylene ug/L (ppb) 5 83 77 70-109 7 Acenaphthene ug/L (ppb) 5 82 75 69-104 9 Fluorene ug/L (ppb) 5 92 85 68-111 8 Phenanthrene ug/L (ppb) 5 94 86 66-106 9 Anthracene ug/L (ppb) 5 96 89 67-112 8 Fluoranthene ug/L (ppb) 5 89 80 69-116 11 Pyrene ug/L (ppb) 5 87 78 68-115 11 Benz(a)anthracene ug/L (ppb) 5 72 65 65-102 10 Chrysene ug/L (ppb) 5 74 67 66-103 10 Benzo(b)fluoranthene ug/L (ppb) 5 79 75 68-116 5 Benzo(k)fluoranthene ug/L (ppb) 5 81 73 70-117 10 Benzo(a)pyrene ug/L (ppb) 5 80 74 64-116 8 Indeno(1,2,3-cd)pyrene ug/L (ppb) 5 95 90 63-122 5 Dibenz(a,h)anthracene ug/L (ppb) 5 91 83 66-116 9 Benzo(g,h,i)perylene ug/L (ppb) 5 89 83 66-114 7

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

6

Data Qualifiers & Definitions a - The analyte was detected at a level less than five times the reporting limit. The RPD results may not provide reliable information on the variability of the analysis.

A1 – More than one compound of similar molecule structure was identified with equal probablility.

b - The analyte was spiked at a level that was less than five times that present in the sample. Matrix spike recoveries may not be meaningful.

ca - The calibration results for this range fell outside of acceptance criteria. The value reported is an estimate.

c - The presence of the analyte indicated may be due to carryover from previous sample injections.

d - The sample was diluted. Detection limits may be raised due to dilution.

ds - The sample was diluted. Detection limits are raised due to dilution and surrogate recoveries may not be meaningful.

dv - Insufficient sample was available to achieve normal reporting limits and limits are raised accordingly.

fb - The analyte indicated was found in the method blank. The result should be considered an estimate.

fc – The compound is a common laboratory and field contaminant.

hr - The sample and duplicate were reextracted and reanalyzed. RPD results were still outside of control limits. The variability is attributed to sample inhomogeneity.

ht - The sample was extracted outside of holding time. Results should be considered estimates.

ip - Recovery fell outside of normal control limits. Compounds in the sample matrix interfered with the quantitation of the analyte.

j – The result is below normal reporting limits. The value reported is an estimate.

J - The internal standard associated with the analyte is out of control limits. The reported concentration is an estimate.

jl - The analyte result in the laboratory control sample is out of control limits. The reported concentration should be considered an estimate.

jr - The rpd result in laboratory control sample associated with the analyte is out of control limits. The reported concentration should be considered an estimate.

js - The surrogate associated with the analyte is out of control limits. The reported concentration should be considered an estimate.

lc - The presence of the compound indicated is likely due to laboratory contamination.

L - The reported concentration was generated from a library search.

nm - The analyte was not detected in one or more of the duplicate analyses. Therefore, calculation of the RPD is not applicable.

pc – The sample was received in a container not approved by the method. The value reported should be considered an estimate.

pr – The sample was received with incorrect preservation. The value reported should be considered an estimate.

ve - The value reported exceeded the calibration range established for the analyte. The reported concentration should be considered an estimate.

vo - The value reported fell outside the control limits established for this analyte.

x - The pattern of peaks present is not indicative of diesel.

y - The pattern of peaks present is not indicative of motor oil.

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

James E. Bruya, Ph.D. 3012 16th Avenue West Charlene Morrow, M.S. Seattle, WA 98119-2029 Yelena Aravkina, M.S. TEL: (206) 285-8282 Bradley T. Benson, B.S. FAX: (206) 283-5044 Kurt Johnson, B.S. e-mail: fbi@isomedia.com

January 31, 2008 Lynn Green, Project Manager Evren Northwest, Inc. PO Box 80747 Portland, OR 97280 Dear Mr. Green: Included are the results from the testing of material submitted on January 25, 2008 from the Frontier Leather 351-05009-06, F&BI 801240 project. There are 16 pages included in this report. Any samples that may remain are currently scheduled for disposal in 30 days. If you would like us to return your samples or arrange for long term storage at our offices, please contact us as soon as possible. We appreciate this opportunity to be of service to you and hope you will call if you should have any questions. Sincerely, FRIEDMAN & BRUYA, INC.

Bradley T. Benson Chemist Enclosures c: Neil Woller, Mike Krzeminski ENW0131R.DOC

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

1

CASE NARRATIVE This case narrative encompasses samples received on January 25, 2008 by Friedman & Bruya, Inc. from the Evren Northwest, Inc. Frontier Leather 351-05009-06, F&BI 801240 project. Samples were logged in under the laboratory ID’s listed below. Laboratory ID Evren Northwest, Inc. 801240-01 GS07-NE Wall-3' 801240-02 GS08-NC Wall-3' 801240-03 GS09-NW Wall-3' 801240-04 GS10-WC Wall-3' 801240-05 GS11-SW Wall-3' 801240-06 GS12-SC Wall-3' 801240-07 GS13-SE Wall-3' 801240-08 GS14-ES Wall-3' 801240-09 GS15-EN Wall-3' All quality control requirements were acceptable.

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

2

Date of Report: 01/31/08 Date Received: 01/25/08 Project: Frontier Leather 351-05009-06, F&BI 801240 Date Extracted: 01/25/08 Date Analyzed: 01/25/08

RESULTS FROM THE ANALYSIS OF THE SOIL SAMPLES FOR TOTAL PETROLEUM HYDROCARBONS AS

DIESEL AND RESIDUAL RANGE USING METHOD NWTPH-Dx

Results Reported on a Dry Weight Basis Results Reported as mg/kg (ppm)

Surrogate Sample ID Diesel Range Residual Range (% Recovery) Laboratory ID (C10-C25) (C25-C36) (Limit 53-144) GS07-NE Wall-3’ <50 <250 89 801240-01

GS08-NC Wall-3’ <50 <250 90 801240-02

GS09-NW Wall-3’ <50 <250 99 801240-03

GS10-WC Wall-3’ <50 <250 94 801240-04

GS11-SW Wall-3’ <50 <250 89 801240-05

GS12-SC Wall-3’ <50 <250 94 801240-06

GS13-SE Wall-3’ <50 <250 96 801240-07

GS14-ES Wall-3’ <50 <250 95 801240-08

GS15-EN Wall-3’ <50 <250 99 801240-09

Method Blank <50 <250 95

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

3

Analysis For Volatile Compounds By EPA Method 8260B Client Sample ID: GS07-NE Wall-3’ Client: Evren Northwest, Inc. Date Received: 01/25/08 Project: 351-05009-06, F&BI 801240 Date Extracted: 01/25/08 Lab ID: 801240-01 Date Analyzed: 01/25/08 Data File: 012507.D Matrix: Soil Instrument: GCMS5 Units: mg/kg (ppm) Operator: MB Lower Upper Surrogates: % Recovery: Limit: Limit: Dibromofluoromethane 72 32 147 1,2-Dichloroethane-d4 75 35 150 Toluene-d8 71 35 149 4-Bromofluorobenzene 91 15 196 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Dichlorodifluoromethane <0.5 1,3-Dichloropropane <0.05 Chloromethane <0.05 Tetrachloroethene <0.025 Vinyl chloride <0.05 Dibromochloromethane <0.05 Bromomethane <0.5 1,2-Dibromoethane (EDB) <0.05 Chloroethane <0.5 Chlorobenzene <0.05 Trichlorofluoromethane <0.5 Ethylbenzene <0.05 Acetone <0.5 1,1,1,2-Tetrachloroethane <0.05 1,1-Dichloroethene <0.05 m,p-Xylene <0.1 Methylene chloride <0.5 o-Xylene <0.05 Methyl t-butyl ether (MTBE) <0.05 Styrene <0.05 trans-1,2-Dichloroethene <0.05 Isopropylbenzene <0.05 1,1-Dichloroethane <0.05 Bromoform <0.05 2,2-Dichloropropane <0.05 n-Propylbenzene <0.05 cis-1,2-Dichloroethene <0.05 Bromobenzene <0.05 Chloroform <0.05 1,3,5-Trimethylbenzene <0.05 2-Butanone (MEK) <0.5 1,1,2,2-Tetrachloroethane <0.05 1,2-Dichloroethane (EDC) <0.05 1,2,3-Trichloropropane <0.05 1,1,1-Trichloroethane <0.05 2-Chlorotoluene <0.05 1,1-Dichloropropene <0.05 4-Chlorotoluene <0.05 Carbon Tetrachloride <0.05 tert-Butylbenzene <0.05 Benzene <0.03 1,2,4-Trimethylbenzene <0.05 Trichloroethene <0.03 sec-Butylbenzene <0.05 1,2-Dichloropropane <0.05 p-Isopropyltoluene <0.05 Bromodichloromethane <0.05 1,3-Dichlorobenzene <0.05 Dibromomethane <0.05 1,4-Dichlorobenzene <0.05 4-Methyl-2-pentanone <0.5 1,2-Dichlorobenzene <0.05 cis-1,3-Dichloropropene <0.05 1,2-Dibromo-3-chloropropane <0.05 Toluene <0.05 1,2,4-Trichlorobenzene <0.1 trans-1,3-Dichloropropene <0.05 Hexachlorobutadiene <0.1 1,1,2-Trichloroethane <0.05 Naphthalene <0.05 2-Hexanone <0.5 1,2,3-Trichlorobenzene <0.1 n-Butylbenzene <0.5 L Dichloroethyl ether <0.5 L

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

4

Analysis For Volatile Compounds By EPA Method 8260B Client Sample ID: GS08-NC Wall-3’ Client: Evren Northwest, Inc. Date Received: 01/25/08 Project: 351-05009-06, F&BI 801240 Date Extracted: 01/25/08 Lab ID: 801240-02 Date Analyzed: 01/25/08 Data File: 012509.D Matrix: Soil Instrument: GCMS5 Units: mg/kg (ppm) Operator: MB Lower Upper Surrogates: % Recovery: Limit: Limit: Dibromofluoromethane 88 32 147 1,2-Dichloroethane-d4 89 35 150 Toluene-d8 87 35 149 4-Bromofluorobenzene 107 15 196 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Dichlorodifluoromethane <0.5 1,3-Dichloropropane <0.05 Chloromethane <0.05 Tetrachloroethene <0.025 Vinyl chloride <0.05 Dibromochloromethane <0.05 Bromomethane <0.5 1,2-Dibromoethane (EDB) <0.05 Chloroethane <0.5 Chlorobenzene <0.05 Trichlorofluoromethane <0.5 Ethylbenzene <0.05 Acetone <0.5 1,1,1,2-Tetrachloroethane <0.05 1,1-Dichloroethene <0.05 m,p-Xylene <0.1 Methylene chloride <0.5 o-Xylene <0.05 Methyl t-butyl ether (MTBE) <0.05 Styrene <0.05 trans-1,2-Dichloroethene <0.05 Isopropylbenzene <0.05 1,1-Dichloroethane <0.05 Bromoform <0.05 2,2-Dichloropropane <0.05 n-Propylbenzene <0.05 cis-1,2-Dichloroethene <0.05 Bromobenzene <0.05 Chloroform <0.05 1,3,5-Trimethylbenzene <0.05 2-Butanone (MEK) <0.5 1,1,2,2-Tetrachloroethane <0.05 1,2-Dichloroethane (EDC) <0.05 1,2,3-Trichloropropane <0.05 1,1,1-Trichloroethane <0.05 2-Chlorotoluene <0.05 1,1-Dichloropropene <0.05 4-Chlorotoluene <0.05 Carbon Tetrachloride <0.05 tert-Butylbenzene <0.05 Benzene <0.03 1,2,4-Trimethylbenzene <0.05 Trichloroethene <0.03 sec-Butylbenzene <0.05 1,2-Dichloropropane <0.05 p-Isopropyltoluene <0.05 Bromodichloromethane <0.05 1,3-Dichlorobenzene <0.05 Dibromomethane <0.05 1,4-Dichlorobenzene <0.05 4-Methyl-2-pentanone <0.5 1,2-Dichlorobenzene <0.05 cis-1,3-Dichloropropene <0.05 1,2-Dibromo-3-chloropropane <0.05 Toluene <0.05 1,2,4-Trichlorobenzene <0.1 trans-1,3-Dichloropropene <0.05 Hexachlorobutadiene <0.1 1,1,2-Trichloroethane <0.05 Naphthalene <0.05 2-Hexanone <0.5 1,2,3-Trichlorobenzene <0.1 n-Butylbenzene <0.5 L Dichloroethyl ether <0.5 L

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

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Analysis For Volatile Compounds By EPA Method 8260B Client Sample ID: GS09-NW Wall-3’ Client: Evren Northwest, Inc. Date Received: 01/25/08 Project: 351-05009-06, F&BI 801240 Date Extracted: 01/25/08 Lab ID: 801240-03 Date Analyzed: 01/25/08 Data File: 012510.D Matrix: Soil Instrument: GCMS5 Units: mg/kg (ppm) Operator: MB Lower Upper Surrogates: % Recovery: Limit: Limit: Dibromofluoromethane 94 32 147 1,2-Dichloroethane-d4 96 35 150 Toluene-d8 91 35 149 4-Bromofluorobenzene 108 15 196 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Dichlorodifluoromethane <0.5 1,3-Dichloropropane <0.05 Chloromethane <0.05 Tetrachloroethene <0.025 Vinyl chloride <0.05 Dibromochloromethane <0.05 Bromomethane <0.5 1,2-Dibromoethane (EDB) <0.05 Chloroethane <0.5 Chlorobenzene <0.05 Trichlorofluoromethane <0.5 Ethylbenzene <0.05 Acetone <0.5 1,1,1,2-Tetrachloroethane <0.05 1,1-Dichloroethene <0.05 m,p-Xylene <0.1 Methylene chloride <0.5 o-Xylene <0.05 Methyl t-butyl ether (MTBE) <0.05 Styrene <0.05 trans-1,2-Dichloroethene <0.05 Isopropylbenzene <0.05 1,1-Dichloroethane <0.05 Bromoform <0.05 2,2-Dichloropropane <0.05 n-Propylbenzene <0.05 cis-1,2-Dichloroethene <0.05 Bromobenzene <0.05 Chloroform <0.05 1,3,5-Trimethylbenzene <0.05 2-Butanone (MEK) <0.5 1,1,2,2-Tetrachloroethane <0.05 1,2-Dichloroethane (EDC) <0.05 1,2,3-Trichloropropane <0.05 1,1,1-Trichloroethane <0.05 2-Chlorotoluene <0.05 1,1-Dichloropropene <0.05 4-Chlorotoluene <0.05 Carbon Tetrachloride <0.05 tert-Butylbenzene <0.05 Benzene <0.03 1,2,4-Trimethylbenzene <0.05 Trichloroethene <0.03 sec-Butylbenzene <0.05 1,2-Dichloropropane <0.05 p-Isopropyltoluene <0.05 Bromodichloromethane <0.05 1,3-Dichlorobenzene <0.05 Dibromomethane <0.05 1,4-Dichlorobenzene <0.05 4-Methyl-2-pentanone <0.5 1,2-Dichlorobenzene <0.05 cis-1,3-Dichloropropene <0.05 1,2-Dibromo-3-chloropropane <0.05 Toluene <0.05 1,2,4-Trichlorobenzene <0.1 trans-1,3-Dichloropropene <0.05 Hexachlorobutadiene <0.1 1,1,2-Trichloroethane <0.05 Naphthalene <0.05 2-Hexanone <0.5 1,2,3-Trichlorobenzene <0.1 n-Butylbenzene <0.5 L Dichloroethyl ether <0.5 L

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

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Analysis For Volatile Compounds By EPA Method 8260B Client Sample ID: GS10-WC Wall-3’ Client: Evren Northwest, Inc. Date Received: 01/25/08 Project: 351-05009-06, F&BI 801240 Date Extracted: 01/25/08 Lab ID: 801240-04 Date Analyzed: 01/25/08 Data File: 012511.D Matrix: Soil Instrument: GCMS5 Units: mg/kg (ppm) Operator: MB Lower Upper Surrogates: % Recovery: Limit: Limit: Dibromofluoromethane 76 32 147 1,2-Dichloroethane-d4 79 35 150 Toluene-d8 77 35 149 4-Bromofluorobenzene 89 15 196 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Dichlorodifluoromethane <0.5 1,3-Dichloropropane <0.05 Chloromethane <0.05 Tetrachloroethene <0.025 Vinyl chloride <0.05 Dibromochloromethane <0.05 Bromomethane <0.5 1,2-Dibromoethane (EDB) <0.05 Chloroethane <0.5 Chlorobenzene <0.05 Trichlorofluoromethane <0.5 Ethylbenzene <0.05 Acetone <0.5 1,1,1,2-Tetrachloroethane <0.05 1,1-Dichloroethene <0.05 m,p-Xylene <0.1 Methylene chloride <0.5 o-Xylene <0.05 Methyl t-butyl ether (MTBE) <0.05 Styrene <0.05 trans-1,2-Dichloroethene <0.05 Isopropylbenzene <0.05 1,1-Dichloroethane <0.05 Bromoform <0.05 2,2-Dichloropropane <0.05 n-Propylbenzene <0.05 cis-1,2-Dichloroethene <0.05 Bromobenzene <0.05 Chloroform <0.05 1,3,5-Trimethylbenzene <0.05 2-Butanone (MEK) <0.5 1,1,2,2-Tetrachloroethane <0.05 1,2-Dichloroethane (EDC) <0.05 1,2,3-Trichloropropane <0.05 1,1,1-Trichloroethane <0.05 2-Chlorotoluene <0.05 1,1-Dichloropropene <0.05 4-Chlorotoluene <0.05 Carbon Tetrachloride <0.05 tert-Butylbenzene <0.05 Benzene <0.03 1,2,4-Trimethylbenzene <0.05 Trichloroethene <0.03 sec-Butylbenzene <0.05 1,2-Dichloropropane <0.05 p-Isopropyltoluene <0.05 Bromodichloromethane <0.05 1,3-Dichlorobenzene <0.05 Dibromomethane <0.05 1,4-Dichlorobenzene <0.05 4-Methyl-2-pentanone <0.5 1,2-Dichlorobenzene <0.05 cis-1,3-Dichloropropene <0.05 1,2-Dibromo-3-chloropropane <0.05 Toluene <0.05 1,2,4-Trichlorobenzene <0.1 trans-1,3-Dichloropropene <0.05 Hexachlorobutadiene <0.1 1,1,2-Trichloroethane <0.05 Naphthalene <0.05 2-Hexanone <0.5 1,2,3-Trichlorobenzene <0.1 n-Butylbenzene <0.5 L Dichloroethyl ether <0.5 L

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

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Analysis For Volatile Compounds By EPA Method 8260B Client Sample ID: GS11-SW Wall-3’ Client: Evren Northwest, Inc. Date Received: 01/25/08 Project: 351-05009-06, F&BI 801240 Date Extracted: 01/25/08 Lab ID: 801240-05 Date Analyzed: 01/25/08 Data File: 012512.D Matrix: Soil Instrument: GCMS5 Units: mg/kg (ppm) Operator: MB Lower Upper Surrogates: % Recovery: Limit: Limit: Dibromofluoromethane 92 32 147 1,2-Dichloroethane-d4 96 35 150 Toluene-d8 88 35 149 4-Bromofluorobenzene 104 15 196 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Dichlorodifluoromethane <0.5 1,3-Dichloropropane <0.05 Chloromethane <0.05 Tetrachloroethene <0.025 Vinyl chloride <0.05 Dibromochloromethane <0.05 Bromomethane <0.5 1,2-Dibromoethane (EDB) <0.05 Chloroethane <0.5 Chlorobenzene <0.05 Trichlorofluoromethane <0.5 Ethylbenzene <0.05 Acetone <0.5 1,1,1,2-Tetrachloroethane <0.05 1,1-Dichloroethene <0.05 m,p-Xylene <0.1 Methylene chloride <0.5 o-Xylene <0.05 Methyl t-butyl ether (MTBE) <0.05 Styrene <0.05 trans-1,2-Dichloroethene <0.05 Isopropylbenzene <0.05 1,1-Dichloroethane <0.05 Bromoform <0.05 2,2-Dichloropropane <0.05 n-Propylbenzene <0.05 cis-1,2-Dichloroethene <0.05 Bromobenzene <0.05 Chloroform <0.05 1,3,5-Trimethylbenzene <0.05 2-Butanone (MEK) <0.5 1,1,2,2-Tetrachloroethane <0.05 1,2-Dichloroethane (EDC) <0.05 1,2,3-Trichloropropane <0.05 1,1,1-Trichloroethane <0.05 2-Chlorotoluene <0.05 1,1-Dichloropropene <0.05 4-Chlorotoluene <0.05 Carbon Tetrachloride <0.05 tert-Butylbenzene <0.05 Benzene <0.03 1,2,4-Trimethylbenzene <0.05 Trichloroethene <0.03 sec-Butylbenzene <0.05 1,2-Dichloropropane <0.05 p-Isopropyltoluene <0.05 Bromodichloromethane <0.05 1,3-Dichlorobenzene <0.05 Dibromomethane <0.05 1,4-Dichlorobenzene <0.05 4-Methyl-2-pentanone <0.5 1,2-Dichlorobenzene <0.05 cis-1,3-Dichloropropene <0.05 1,2-Dibromo-3-chloropropane <0.05 Toluene <0.05 1,2,4-Trichlorobenzene <0.1 trans-1,3-Dichloropropene <0.05 Hexachlorobutadiene <0.1 1,1,2-Trichloroethane <0.05 Naphthalene <0.05 2-Hexanone <0.5 1,2,3-Trichlorobenzene <0.1 n-Butylbenzene <0.5 L Dichloroethyl ether <0.5 L

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

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Analysis For Volatile Compounds By EPA Method 8260B Client Sample ID: GS12-SC Wall-3’ Client: Evren Northwest, Inc. Date Received: 01/25/08 Project: 351-05009-06, F&BI 801240 Date Extracted: 01/25/08 Lab ID: 801240-06 Date Analyzed: 01/25/08 Data File: 012513.D Matrix: Soil Instrument: GCMS5 Units: mg/kg (ppm) Operator: MB Lower Upper Surrogates: % Recovery: Limit: Limit: Dibromofluoromethane 92 32 147 1,2-Dichloroethane-d4 96 35 150 Toluene-d8 90 35 149 4-Bromofluorobenzene 106 15 196 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Dichlorodifluoromethane <0.5 1,3-Dichloropropane <0.05 Chloromethane <0.05 Tetrachloroethene <0.025 Vinyl chloride <0.05 Dibromochloromethane <0.05 Bromomethane <0.5 1,2-Dibromoethane (EDB) <0.05 Chloroethane <0.5 Chlorobenzene <0.05 Trichlorofluoromethane <0.5 Ethylbenzene <0.05 Acetone <0.5 1,1,1,2-Tetrachloroethane <0.05 1,1-Dichloroethene <0.05 m,p-Xylene <0.1 Methylene chloride <0.5 o-Xylene <0.05 Methyl t-butyl ether (MTBE) <0.05 Styrene <0.05 trans-1,2-Dichloroethene <0.05 Isopropylbenzene <0.05 1,1-Dichloroethane <0.05 Bromoform <0.05 2,2-Dichloropropane <0.05 n-Propylbenzene <0.05 cis-1,2-Dichloroethene <0.05 Bromobenzene <0.05 Chloroform <0.05 1,3,5-Trimethylbenzene <0.05 2-Butanone (MEK) <0.5 1,1,2,2-Tetrachloroethane <0.05 1,2-Dichloroethane (EDC) <0.05 1,2,3-Trichloropropane <0.05 1,1,1-Trichloroethane <0.05 2-Chlorotoluene <0.05 1,1-Dichloropropene <0.05 4-Chlorotoluene <0.05 Carbon Tetrachloride <0.05 tert-Butylbenzene <0.05 Benzene <0.03 1,2,4-Trimethylbenzene <0.05 Trichloroethene <0.03 sec-Butylbenzene <0.05 1,2-Dichloropropane <0.05 p-Isopropyltoluene <0.05 Bromodichloromethane <0.05 1,3-Dichlorobenzene <0.05 Dibromomethane <0.05 1,4-Dichlorobenzene <0.05 4-Methyl-2-pentanone <0.5 1,2-Dichlorobenzene <0.05 cis-1,3-Dichloropropene <0.05 1,2-Dibromo-3-chloropropane <0.05 Toluene <0.05 1,2,4-Trichlorobenzene <0.1 trans-1,3-Dichloropropene <0.05 Hexachlorobutadiene <0.1 1,1,2-Trichloroethane <0.05 Naphthalene <0.05 2-Hexanone <0.5 1,2,3-Trichlorobenzene <0.1 n-Butylbenzene <0.5 L Dichloroethyl ether <0.5 L

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

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Analysis For Volatile Compounds By EPA Method 8260B Client Sample ID: GS13-SE Wall-3’ Client: Evren Northwest, Inc. Date Received: 01/25/08 Project: 351-05009-06, F&BI 801240 Date Extracted: 01/25/08 Lab ID: 801240-07 Date Analyzed: 01/25/08 Data File: 012514.D Matrix: Soil Instrument: GCMS5 Units: mg/kg (ppm) Operator: MB Lower Upper Surrogates: % Recovery: Limit: Limit: Dibromofluoromethane 92 32 147 1,2-Dichloroethane-d4 95 35 150 Toluene-d8 91 35 149 4-Bromofluorobenzene 107 15 196 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Dichlorodifluoromethane <0.5 1,3-Dichloropropane <0.05 Chloromethane <0.05 Tetrachloroethene <0.025 Vinyl chloride <0.05 Dibromochloromethane <0.05 Bromomethane <0.5 1,2-Dibromoethane (EDB) <0.05 Chloroethane <0.5 Chlorobenzene <0.05 Trichlorofluoromethane <0.5 Ethylbenzene <0.05 Acetone <0.5 1,1,1,2-Tetrachloroethane <0.05 1,1-Dichloroethene <0.05 m,p-Xylene <0.1 Methylene chloride <0.5 o-Xylene <0.05 Methyl t-butyl ether (MTBE) <0.05 Styrene <0.05 trans-1,2-Dichloroethene <0.05 Isopropylbenzene <0.05 1,1-Dichloroethane <0.05 Bromoform <0.05 2,2-Dichloropropane <0.05 n-Propylbenzene <0.05 cis-1,2-Dichloroethene <0.05 Bromobenzene <0.05 Chloroform <0.05 1,3,5-Trimethylbenzene <0.05 2-Butanone (MEK) <0.5 1,1,2,2-Tetrachloroethane <0.05 1,2-Dichloroethane (EDC) <0.05 1,2,3-Trichloropropane <0.05 1,1,1-Trichloroethane <0.05 2-Chlorotoluene <0.05 1,1-Dichloropropene <0.05 4-Chlorotoluene <0.05 Carbon Tetrachloride <0.05 tert-Butylbenzene <0.05 Benzene <0.03 1,2,4-Trimethylbenzene <0.05 Trichloroethene <0.03 sec-Butylbenzene <0.05 1,2-Dichloropropane <0.05 p-Isopropyltoluene <0.05 Bromodichloromethane <0.05 1,3-Dichlorobenzene <0.05 Dibromomethane <0.05 1,4-Dichlorobenzene <0.05 4-Methyl-2-pentanone <0.5 1,2-Dichlorobenzene <0.05 cis-1,3-Dichloropropene <0.05 1,2-Dibromo-3-chloropropane <0.05 Toluene <0.05 1,2,4-Trichlorobenzene <0.1 trans-1,3-Dichloropropene <0.05 Hexachlorobutadiene <0.1 1,1,2-Trichloroethane <0.05 Naphthalene <0.05 2-Hexanone <0.5 1,2,3-Trichlorobenzene <0.1 n-Butylbenzene <0.5 L Dichloroethyl ether <0.5 L

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

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Analysis For Volatile Compounds By EPA Method 8260B Client Sample ID: GS14-ES Wall-3’ Client: Evren Northwest, Inc. Date Received: 01/25/08 Project: 351-05009-06, F&BI 801240 Date Extracted: 01/25/08 Lab ID: 801240-08 Date Analyzed: 01/25/08 Data File: 012515.D Matrix: Soil Instrument: GCMS5 Units: mg/kg (ppm) Operator: MB Lower Upper Surrogates: % Recovery: Limit: Limit: Dibromofluoromethane 97 32 147 1,2-Dichloroethane-d4 103 35 150 Toluene-d8 97 35 149 4-Bromofluorobenzene 112 15 196 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Dichlorodifluoromethane <0.5 1,3-Dichloropropane <0.05 Chloromethane <0.05 Tetrachloroethene <0.025 Vinyl chloride <0.05 Dibromochloromethane <0.05 Bromomethane <0.5 1,2-Dibromoethane (EDB) <0.05 Chloroethane <0.5 Chlorobenzene <0.05 Trichlorofluoromethane <0.5 Ethylbenzene <0.05 Acetone <0.5 1,1,1,2-Tetrachloroethane <0.05 1,1-Dichloroethene <0.05 m,p-Xylene <0.1 Methylene chloride <0.5 o-Xylene <0.05 Methyl t-butyl ether (MTBE) <0.05 Styrene <0.05 trans-1,2-Dichloroethene <0.05 Isopropylbenzene <0.05 1,1-Dichloroethane <0.05 Bromoform <0.05 2,2-Dichloropropane <0.05 n-Propylbenzene <0.05 cis-1,2-Dichloroethene <0.05 Bromobenzene <0.05 Chloroform <0.05 1,3,5-Trimethylbenzene <0.05 2-Butanone (MEK) <0.5 1,1,2,2-Tetrachloroethane <0.05 1,2-Dichloroethane (EDC) <0.05 1,2,3-Trichloropropane <0.05 1,1,1-Trichloroethane <0.05 2-Chlorotoluene <0.05 1,1-Dichloropropene <0.05 4-Chlorotoluene <0.05 Carbon Tetrachloride <0.05 tert-Butylbenzene <0.05 Benzene <0.03 1,2,4-Trimethylbenzene <0.05 Trichloroethene <0.03 sec-Butylbenzene <0.05 1,2-Dichloropropane <0.05 p-Isopropyltoluene <0.05 Bromodichloromethane <0.05 1,3-Dichlorobenzene <0.05 Dibromomethane <0.05 1,4-Dichlorobenzene <0.05 4-Methyl-2-pentanone <0.5 1,2-Dichlorobenzene <0.05 cis-1,3-Dichloropropene <0.05 1,2-Dibromo-3-chloropropane <0.05 Toluene <0.05 1,2,4-Trichlorobenzene <0.1 trans-1,3-Dichloropropene <0.05 Hexachlorobutadiene <0.1 1,1,2-Trichloroethane <0.05 Naphthalene <0.05 2-Hexanone <0.5 1,2,3-Trichlorobenzene <0.1 n-Butylbenzene <0.5 L Dichloroethyl ether <0.5 L

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

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Analysis For Volatile Compounds By EPA Method 8260B Client Sample ID: GS15-EN Wall-3’ Client: Evren Northwest, Inc. Date Received: 01/25/08 Project: 351-05009-06, F&BI 801240 Date Extracted: 01/25/08 Lab ID: 801240-09 Date Analyzed: 01/25/08 Data File: 012516.D Matrix: Soil Instrument: GCMS5 Units: mg/kg (ppm) Operator: MB Lower Upper Surrogates: % Recovery: Limit: Limit: Dibromofluoromethane 98 32 147 1,2-Dichloroethane-d4 101 35 150 Toluene-d8 97 35 149 4-Bromofluorobenzene 118 15 196 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Dichlorodifluoromethane <0.5 1,3-Dichloropropane <0.05 Chloromethane <0.05 Tetrachloroethene <0.025 Vinyl chloride <0.05 Dibromochloromethane <0.05 Bromomethane <0.5 1,2-Dibromoethane (EDB) <0.05 Chloroethane <0.5 Chlorobenzene <0.05 Trichlorofluoromethane <0.5 Ethylbenzene <0.05 Acetone <0.5 1,1,1,2-Tetrachloroethane <0.05 1,1-Dichloroethene <0.05 m,p-Xylene <0.1 Methylene chloride <0.5 o-Xylene <0.05 Methyl t-butyl ether (MTBE) <0.05 Styrene <0.05 trans-1,2-Dichloroethene <0.05 Isopropylbenzene <0.05 1,1-Dichloroethane <0.05 Bromoform <0.05 2,2-Dichloropropane <0.05 n-Propylbenzene <0.05 cis-1,2-Dichloroethene <0.05 Bromobenzene <0.05 Chloroform <0.05 1,3,5-Trimethylbenzene <0.05 2-Butanone (MEK) <0.5 1,1,2,2-Tetrachloroethane <0.05 1,2-Dichloroethane (EDC) <0.05 1,2,3-Trichloropropane <0.05 1,1,1-Trichloroethane <0.05 2-Chlorotoluene <0.05 1,1-Dichloropropene <0.05 4-Chlorotoluene <0.05 Carbon Tetrachloride <0.05 tert-Butylbenzene <0.05 Benzene <0.03 1,2,4-Trimethylbenzene <0.05 Trichloroethene <0.03 sec-Butylbenzene <0.05 1,2-Dichloropropane <0.05 p-Isopropyltoluene <0.05 Bromodichloromethane <0.05 1,3-Dichlorobenzene <0.05 Dibromomethane <0.05 1,4-Dichlorobenzene <0.05 4-Methyl-2-pentanone <0.5 1,2-Dichlorobenzene <0.05 cis-1,3-Dichloropropene <0.05 1,2-Dibromo-3-chloropropane <0.05 Toluene <0.05 1,2,4-Trichlorobenzene <0.1 trans-1,3-Dichloropropene <0.05 Hexachlorobutadiene <0.1 1,1,2-Trichloroethane <0.05 Naphthalene <0.05 2-Hexanone <0.5 1,2,3-Trichlorobenzene <0.1 n-Butylbenzene <0.5 L Dichloroethyl ether <0.5 L

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

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Analysis For Volatile Compounds By EPA Method 8260B Client Sample ID: Method Blank Client: Evren Northwest, Inc. Date Received: Not Applicable Project: 351-05009-06, F&BI 801240 Date Extracted: 01/25/08 Lab ID: 080118 mb Date Analyzed: 01/25/08 Data File: 012506.D Matrix: Soil Instrument: GCMS5 Units: mg/kg (ppm) Operator: MB Lower Upper Surrogates: % Recovery: Limit: Limit: Dibromofluoromethane 69 32 147 1,2-Dichloroethane-d4 72 35 150 Toluene-d8 72 35 149 4-Bromofluorobenzene 79 15 196 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Dichlorodifluoromethane <0.5 1,3-Dichloropropane <0.05 Chloromethane <0.05 Tetrachloroethene <0.025 Vinyl chloride <0.05 Dibromochloromethane <0.05 Bromomethane <0.5 1,2-Dibromoethane (EDB) <0.05 Chloroethane <0.5 Chlorobenzene <0.05 Trichlorofluoromethane <0.5 Ethylbenzene <0.05 Acetone <0.5 1,1,1,2-Tetrachloroethane <0.05 1,1-Dichloroethene <0.05 m,p-Xylene <0.1 Methylene chloride <0.5 o-Xylene <0.05 Methyl t-butyl ether (MTBE) <0.05 Styrene <0.05 trans-1,2-Dichloroethene <0.05 Isopropylbenzene <0.05 1,1-Dichloroethane <0.05 Bromoform <0.05 2,2-Dichloropropane <0.05 n-Propylbenzene <0.05 cis-1,2-Dichloroethene <0.05 Bromobenzene <0.05 Chloroform <0.05 1,3,5-Trimethylbenzene <0.05 2-Butanone (MEK) <0.5 1,1,2,2-Tetrachloroethane <0.05 1,2-Dichloroethane (EDC) <0.05 1,2,3-Trichloropropane <0.05 1,1,1-Trichloroethane <0.05 2-Chlorotoluene <0.05 1,1-Dichloropropene <0.05 4-Chlorotoluene <0.05 Carbon Tetrachloride <0.05 tert-Butylbenzene <0.05 Benzene <0.03 1,2,4-Trimethylbenzene <0.05 Trichloroethene <0.03 sec-Butylbenzene <0.05 1,2-Dichloropropane <0.05 p-Isopropyltoluene <0.05 Bromodichloromethane <0.05 1,3-Dichlorobenzene <0.05 Dibromomethane <0.05 1,4-Dichlorobenzene <0.05 4-Methyl-2-pentanone <0.5 1,2-Dichlorobenzene <0.05 cis-1,3-Dichloropropene <0.05 1,2-Dibromo-3-chloropropane <0.05 Toluene <0.05 1,2,4-Trichlorobenzene <0.1 trans-1,3-Dichloropropene <0.05 Hexachlorobutadiene <0.1 1,1,2-Trichloroethane <0.05 Naphthalene <0.05 2-Hexanone <0.5 1,2,3-Trichlorobenzene <0.1 n-Butylbenzene <0.5 L Dichloroethyl ether <0.5 L

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

13

Date of Report: 01/31/08 Date Received: 01/25/08 Project: Frontier Leather 351-05009-06, F&BI 801240

QUALITY ASSURANCE RESULTS FROM THE ANALYSIS OF SOIL SAMPLES FOR TOTAL PETROLEUM HYDROCARBONS AS

DIESEL EXTENDED USING METHOD NWTPH-Dx Laboratory Code: 801250-07 (Matrix Spike) Analyte

Reporting

Units

Spike Level

Sample Result

(Wet wt)

Percent Recovery

MS

Percent Recovery MSD

Acceptance

Criteria

RPD

(Limit 20) Diesel Extended mg/kg (ppm) 5,000 <50 105 109 71-137 4 Laboratory Code: Laboratory Control Sample Analyte

Reporting

Units

Spike Level

Percent Recovery

LCS

Acceptance

Criteria Diesel Extended mg/kg (ppm) 5,000 98 70-129

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14

Date of Report: 01/31/08 Date Received: 01/25/08 Project: Frontier Leather 351-05009-06, F&BI 801240 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF SOIL SAMPLES

FOR VOLATILES BY EPA METHOD 8260B Laboratory Code: 801240-01 (Duplicate) Analyte

Reporting

Units

Sample Result

Duplicate Result

Relative Percent Difference (Limit 20)

Dichlorodifluoromethane mg/kg (ppm) <0.05 <0.05 nm Chloromethane mg/kg (ppm) <0.05 <0.05 nm Vinyl chloride mg/kg (ppm) <0.05 <0.05 nm Bromomethane mg/kg (ppm) <0.5 <0.5 nm Chloroethane mg/kg (ppm) <0.5 <0.5 nm Trichlorofluoromethane mg/kg (ppm) <0.5 <0.5 nm Acetone mg/kg (ppm) <0.5 <0.5 nm 1,1-Dichloroethene mg/kg (ppm) <0.05 <0.05 nm Methylene chloride mg/kg (ppm) <0.5 <0.5 nm Methyl t-butyl ether (MTBE) mg/kg (ppm) <0.05 <0.05 nm trans-1,2-Dichloroethene mg/kg (ppm) <0.05 <0.05 nm 1,1-Dichloroethane mg/kg (ppm) <0.05 <0.05 nm 2,2-Dichloropropane mg/kg (ppm) <0.05 <0.05 nm cis-1,2-Dichloroethene mg/kg (ppm) <0.05 <0.05 nm Chloroform mg/kg (ppm) <0.05 <0.05 nm 2-Butanone (MEK) mg/kg (ppm) <0.5 <0.5 nm 1,2-Dichloroethane (EDC) mg/kg (ppm) <0.05 <0.05 nm 1,1,1-Trichloroethane mg/kg (ppm) <0.05 <0.05 nm 1,1-Dichloropropene mg/kg (ppm) <0.05 <0.05 nm Carbon Tetrachloride mg/kg (ppm) <0.05 <0.05 nm Benzene mg/kg (ppm) <0.03 <0.03 nm Trichloroethene mg/kg (ppm) <0.03 <0.03 nm 1,2-Dichloropropane mg/kg (ppm) <0.05 <0.05 nm Bromodichloromethane mg/kg (ppm) <0.05 <0.05 nm Dibromomethane mg/kg (ppm) <0.05 <0.05 nm 4-Methyl -2-pentanone mg/kg (ppm) <0.5 <0.5 nm cis-1,3-Dichloropropene mg/kg (ppm) <0.05 <0.05 nm Toluene mg/kg (ppm) <0.05 <0.05 nm trans-1,3-Dichloropropene mg/kg (ppm) <0.05 <0.05 nm 1,1,2-Trichloroethane mg/kg (ppm) <0.05 <0.05 nm 2-Hexanone mg/kg (ppm) <0.5 <0.5 nm 1,3-Dichloropropane mg/kg (ppm) <0.05 <0.05 nm Tetrachloroethene mg/kg (ppm) <0.025 <0.025 nm Dibromochloromethane mg/kg (ppm) <0.05 <0.05 nm 1,2-Dibromoethane (EDB) mg/kg (ppm) <0.05 <0.05 nm Chlorobenzene mg/kg (ppm) <0.05 <0.05 nm Ethylbenzene mg/kg (ppm) <0.05 <0.05 nm 1,1,1,2-Tetrachloroethane mg/kg (ppm) <0.05 <0.05 nm m,p-Xylene mg/kg (ppm) <0.1 <0.1 nm o-Xylene mg/kg (ppm) <0.05 <0.05 nm Styrene mg/kg (ppm) <0.05 <0.05 nm Isopropylbenzene mg/kg (ppm) <0.05 <0.05 nm Bromoform mg/kg (ppm) <0.05 <0.05 nm n-Propylbenzene mg/kg (ppm) <0.05 <0.05 nm Bromobenzene mg/kg (ppm) <0.05 <0.05 nm 1,3,5-Trimethylbenzene mg/kg (ppm) <0.05 <0.05 nm 1,1,2,2-Tetrachloroethane mg/kg (ppm) <0.05 <0.05 nm 1,2,3-Trichloropropane mg/kg (ppm) <0.05 <0.05 nm 2-Chlorotoluene mg/kg (ppm) <0.05 <0.05 nm 4-Chlorotoluene mg/kg (ppm) <0.05 <0.05 nm tert-Butylbenzene mg/kg (ppm) <0.05 <0.05 nm 1,2,4-Trimethylbenzene mg/kg (ppm) <0.05 <0.05 nm sec-Butylbenzene mg/kg (ppm) <0.05 <0.05 nm p-Isopropyltoluene mg/kg (ppm) <0.05 <0.05 nm 1,3-Dichlorobenzene mg/kg (ppm) <0.05 <0.05 nm 1,4-Dichlorobenzene mg/kg (ppm) <0.05 <0.05 nm 1,2-Dichlorobenzene mg/kg (ppm) <0.05 <0.05 nm 1,2-Dibromo-3-chloropropane mg/kg (ppm) <0.05 <0.05 nm 1,2,4-Trichlorobenzene mg/kg (ppm) <0.1 <0.1 nm Hexachlorobutadiene mg/kg (ppm) <0.1 <0.1 nm Naphthalene mg/kg (ppm) <0.05 <0.05 nm 1,2,3-Trichlorobenzene mg/kg (ppm) <0.1 <0.1 nm

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15

Date of Report: 01/31/08 Date Received: 01/25/08 Project: Frontier Leather 351-05009-06, F&BI 801240 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF SOIL SAMPLES

FOR VOLATILES BY EPA METHOD 8260B Laboratory Code: Laboratory Control Sample Analyte

Reporting

Units

Spike Level

Percent Recovery

LCS

Percent Recovery

LCSD

Acceptance

Criteria

RPD

(Limit 20) Dichlorodifluoromethane mg/kg (ppm) 2.5 61 59 29-163 3 Chloromethane mg/kg (ppm) 2.5 88 81 28-147 8 Vinyl chloride mg/kg (ppm) 2.5 100 91 38-143 9 Bromomethane mg/kg (ppm) 2.5 126 106 32-163 17 Chloroethane mg/kg (ppm) 2.5 120 101 10-165 17 Trichlorofluoromethane mg/kg (ppm) 2.5 198 vo 164 22-167 19 Acetone mg/kg (ppm) 2.5 106 104 20-172 2 1,1-Dichloroethene mg/kg (ppm) 2.5 93 85 42-140 9 Methylene chloride mg/kg (ppm) 2.5 102 93 53-137 9 Methyl t-butyl ether (MTBE) mg/kg (ppm) 2.5 94 94 73-122 0 trans-1,2-Dichloroethene mg/kg (ppm) 2.5 97 90 70-122 7 1,1-Dichloroethane mg/kg (ppm) 2.5 98 94 77-114 4 2,2-Dichloropropane mg/kg (ppm) 2.5 102 100 65-135 2 cis-1,2-Dichloroethene mg/kg (ppm) 2.5 101 97 77-120 4 Chloroform mg/kg (ppm) 2.5 100 96 76-117 4 2-Butanone (MEK) mg/kg (ppm) 2.5 99 101 52-153 2 1,2-Dichloroethane (EDC) mg/kg (ppm) 2.5 101 98 76-116 3 1,1,1-Trichloroethane mg/kg (ppm) 2.5 105 101 79-120 4 1,1-Dichloropropene mg/kg (ppm) 2.5 104 101 76-123 3 Carbon Tetrachloride mg/kg (ppm) 2.5 109 106 75-126 3 Benzene mg/kg (ppm) 2.5 98 96 76-118 2 Trichloroethene mg/kg (ppm) 2.5 99 96 75-121 3 1,2-Dichloropropane mg/kg (ppm) 2.5 104 102 78-123 2 Bromodichloromethane mg/kg (ppm) 2.5 110 107 79-126 3 Dibromomethane mg/kg (ppm) 2.5 105 102 79-121 3 4-Methyl -2-pentanone mg/kg (ppm) 2.5 115 114 52-151 1 cis-1,3-Dichloropropene mg/kg (ppm) 2.5 110 108 80-127 2 Toluene mg/kg (ppm) 2.5 106 105 76-122 1 trans-1,3-Dichloropropene mg/kg (ppm) 2.5 114 112 80-126 2 1,1,2-Trichloroethane mg/kg (ppm) 2.5 102 103 77-121 1 2-Hexanone mg/kg (ppm) 2.5 123 124 67-126 1 1,3-Dichloropropane mg/kg (ppm) 2.5 105 105 76-122 0 Tetrachloroethene mg/kg (ppm) 2.5 107 105 77-124 2 Dibromochloromethane mg/kg (ppm) 2.5 99 97 73-127 2 1,2-Dibromoethane (EDB) mg/kg (ppm) 2.5 107 105 78-126 2 Chlorobenzene mg/kg (ppm) 2.5 101 99 79-113 2 Ethylbenzene mg/kg (ppm) 2.5 105 103 77-120 2 1,1,1,2-Tetrachloroethane mg/kg (ppm) 2.5 109 105 79-125 4 m,p-Xylene mg/kg (ppm) 5 109 107 79-121 2 o-Xylene mg/kg (ppm) 2.5 114 110 80-123 4 Styrene mg/kg (ppm) 2.5 99 96 81-124 3 Isopropylbenzene mg/kg (ppm) 2.5 115 110 79-123 4 Bromoform mg/kg (ppm) 2.5 98 93 65-124 5 n-Propylbenzene mg/kg (ppm) 2.5 113 112 77-123 1 Bromobenzene mg/kg (ppm) 2.5 105 104 78-122 1 1,3,5-Trimethylbenzene mg/kg (ppm) 2.5 112 110 79-123 2 1,1,2,2-Tetrachloroethane mg/kg (ppm) 2.5 100 100 73-121 0 1,2,3-Trichloropropane mg/kg (ppm) 2.5 98 97 69-123 1 2-Chlorotoluene mg/kg (ppm) 2.5 108 106 77-120 2 4-Chlorotoluene mg/kg (ppm) 2.5 108 106 77-121 2 tert-Butylbenzene mg/kg (ppm) 2.5 114 111 77-124 3 1,2,4-Trimethylbenzene mg/kg (ppm) 2.5 114 111 78-123 3 sec-Butylbenzene mg/kg (ppm) 2.5 113 111 77-122 2 p-Isopropyltoluene mg/kg (ppm) 2.5 114 111 79-126 3 1,3-Dichlorobenzene mg/kg (ppm) 2.5 104 102 78-119 2 1,4-Dichlorobenzene mg/kg (ppm) 2.5 98 96 77-114 2 1,2-Dichlorobenzene mg/kg (ppm) 2.5 106 104 78-120 2 1,2-Dibromo-3-chloropropane mg/kg (ppm) 2.5 102 102 66-133 0 1,2,4-Trichlorobenzene mg/kg (ppm) 2.5 112 112 71-129 0 Hexachlorobutadiene mg/kg (ppm) 2.5 109 107 65-134 2 Naphthalene mg/kg (ppm) 2.5 97 98 51-158 1 1,2,3-Trichlorobenzene mg/kg (ppm) 2.5 115 116 37-182 1

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16

Data Qualifiers & Definitions a - The analyte was detected at a level less than five times the reporting limit. The RPD results may not provide reliable information on the variability of the analysis.

A1 – More than one compound of similar molecule structure was identified with equal probablility.

b - The analyte was spiked at a level that was less than five times that present in the sample. Matrix spike recoveries may not be meaningful.

ca - The calibration results for this range fell outside of acceptance criteria. The value reported is an estimate.

c - The presence of the analyte indicated may be due to carryover from previous sample injections.

d - The sample was diluted. Detection limits may be raised due to dilution.

ds - The sample was diluted. Detection limits are raised due to dilution and surrogate recoveries may not be meaningful.

dv - Insufficient sample was available to achieve normal reporting limits and limits are raised accordingly.

fb - The analyte indicated was found in the method blank. The result should be considered an estimate.

fc – The compound is a common laboratory and field contaminant.

hr - The sample and duplicate were reextracted and reanalyzed. RPD results were still outside of control limits. The variability is attributed to sample inhomogeneity.

ht - The sample was extracted outside of holding time. Results should be considered estimates.

ip - Recovery fell outside of normal control limits. Compounds in the sample matrix interfered with the quantitation of the analyte.

j – The result is below normal reporting limits. The value reported is an estimate.

J - The internal standard associated with the analyte is out of control limits. The reported concentration is an estimate.

jl - The analyte result in the laboratory control sample is out of control limits. The reported concentration should be considered an estimate.

jr - The rpd result in laboratory control sample associated with the analyte is out of control limits. The reported concentration should be considered an estimate.

js - The surrogate associated with the analyte is out of control limits. The reported concentration should be considered an estimate.

lc - The presence of the compound indicated is likely due to laboratory contamination.

L - The reported concentration was generated from a library search.

nm - The analyte was not detected in one or more of the duplicate analyses. Therefore, calculation of the RPD is not applicable.

pc – The sample was received in a container not approved by the method. The value reported should be considered an estimate.

pr – The sample was received with incorrect preservation. The value reported should be considered an estimate.

ve - The value reported exceeded the calibration range established for the analyte. The reported concentration should be considered an estimate.

vo - The value reported fell outside the control limits established for this analyte.

x - The pattern of peaks present is not indicative of diesel.

y - The pattern of peaks present is not indicative of motor oil.

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

James E. Bruya, Ph.D. 3012 16th Avenue West Charlene Morrow, M.S. Seattle, WA 98119-2029 Yelena Aravkina, M.S. TEL: (206) 285-8282 Bradley T. Benson, B.S. FAX: (206) 283-5044 Kurt Johnson, B.S. e-mail: fbi@isomedia.com

February 4, 2008 Lynn Green, Project Manager Evren Northwest, Inc. PO Box 80747 Portland, OR 97280 Dear Mr. Green: Included are the results from the testing of material submitted on January 24, 2008 from the Frontier Leather USY 351-05009-06, F&BI 801227 project. There are 19 pages included in this report. Any samples that may remain are currently scheduled for disposal in 30 days. If you would like us to return your samples or arrange for long term storage at our offices, please contact us as soon as possible. We appreciate this opportunity to be of service to you and hope you will call if you should have any questions. Sincerely, FRIEDMAN & BRUYA, INC.

Bradley T. Benson Chemist Enclosures c: Neil Woller, Mike Krzeminski ENW0204R.DOC

FRIEDMAN & BRUYA, INC. _________________________________________________

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1

CASE NARRATIVE This case narrative encompasses samples received on January 24, 2008 by Friedman & Bruya, Inc. from the Evren Northwest, Inc. Frontier Leather USY 351-05009-06, F&BI 801227 project. Samples were logged in under the laboratory ID’s listed below. Laboratory ID Evren Northwest, Inc. 801227-01 GS01-NW-4' 801227-02 GS02-SW-4' 801227-03 GS03-EW-4' 801227-04 GS04-WW-4' 801227-05 GS05-TPW-INF-9' 801227-06 GS06-TPE-INF-9' All quality control requirements were acceptable.

FRIEDMAN & BRUYA, INC. _________________________________________________

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2

Date of Report: 02/04/08 Date Received: 01/24/08 Project: Frontier Leather USY 351-05009-06, F&BI 801227 Date Extracted: 01/24/08 Date Analyzed: 01/25/08

RESULTS FROM THE ANALYSIS OF THE SOIL SAMPLES FOR TOTAL PETROLEUM HYDROCARBONS AS

DIESEL AND RESIDUAL RANGE USING METHOD NWTPH-Dx

Results Reported on a Dry Weight Basis Results Reported as mg/kg (ppm)

Surrogate Sample ID Diesel Range Residual Range (% Recovery) Laboratory ID (C10-C25) (C25-C36) (Limit 50-150) GS01-NW-4’ 15,000 2,600 y 94 801227-01 GS02-SW-4’ 38,000 4,900 y 93 801227-02 GS03-EW-4’ 6,000 990 y 91 801227-03 GS04-WW-4’ 17,000 2,400 y 105 801227-04 GS05-TPW-INF-9’ 170 <250 88 801227-05 GS06-TPE-INF-9’ 77 <250 96 801227-06 Method Blank <50 <250 90

FRIEDMAN & BRUYA, INC. _________________________________________________

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3

Analysis For Volatile Compounds By EPA Method 8260B Client Sample ID: GS01-NW-4’ Client: Evren Northwest, Inc. Date Received: 01/24/08 Project: 351-05009-06, F&BI 801227 Date Extracted: 01/25/08 Lab ID: 801227-01 Date Analyzed: 01/29/08 Data File: 012819.D Matrix: Soil Instrument: GCMS5 Units: mg/kg (ppm) Operator: MB Lower Upper Surrogates: % Recovery: Limit: Limit: Dibromofluoromethane 62 32 147 1,2-Dichloroethane-d4 62 35 150 Toluene-d8 47 35 149 4-Bromofluorobenzene 59 15 196 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Dichlorodifluoromethane <0.5 1,3-Dichloropropane <0.05 Chloromethane <0.05 Tetrachloroethene <0.025 Vinyl chloride <0.05 Dibromochloromethane <0.05 Bromomethane <0.5 1,2-Dibromoethane (EDB) <0.05 Chloroethane <0.5 Chlorobenzene <0.05 Trichlorofluoromethane <0.5 Ethylbenzene 0.071 Acetone <0.5 1,1,1,2-Tetrachloroethane <0.05 1,1-Dichloroethene <0.05 m,p-Xylene 0.23 Methylene chloride 0.50 lc o-Xylene 0.21 Methyl t-butyl ether (MTBE) <0.05 Styrene <0.05 trans-1,2-Dichloroethene <0.05 Isopropylbenzene <0.05 1,1-Dichloroethane <0.05 Bromoform <0.05 2,2-Dichloropropane <0.05 n-Propylbenzene 0.088 cis-1,2-Dichloroethene 0.54 Bromobenzene <0.05 Chloroform <0.05 1,3,5-Trimethylbenzene 0.094 2-Butanone (MEK) <0.5 1,1,2,2-Tetrachloroethane <0.05 1,2-Dichloroethane (EDC) <0.05 1,2,3-Trichloropropane <0.05 1,1,1-Trichloroethane <0.05 2-Chlorotoluene <0.05 1,1-Dichloropropene <0.05 4-Chlorotoluene <0.05 Carbon Tetrachloride <0.05 tert-Butylbenzene <0.05 Benzene <0.03 1,2,4-Trimethylbenzene 0.55 Trichloroethene 0.29 sec-Butylbenzene 0.11 1,2-Dichloropropane <0.05 p-Isopropyltoluene 0.086 Bromodichloromethane <0.05 1,3-Dichlorobenzene <0.05 Dibromomethane <0.05 1,4-Dichlorobenzene <0.05 4-Methyl-2-pentanone <0.5 1,2-Dichlorobenzene <0.05 cis-1,3-Dichloropropene <0.05 1,2-Dibromo-3-chloropropane <0.05 Toluene 0.11 1,2,4-Trichlorobenzene <0.1 trans-1,3-Dichloropropene <0.05 Hexachlorobutadiene <0.1 1,1,2-Trichloroethane <0.05 Naphthalene 2.2 2-Hexanone <0.5 1,2,3-Trichlorobenzene <0.1 n-Butylbenzene 0.59 L Dichloroethyl ether <0.5 L

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

4

Analysis For Volatile Compounds By EPA Method 8260B Client Sample ID: GS02-SW-4’ Client: Evren Northwest, Inc. Date Received: 01/24/08 Project: 351-05009-06, F&BI 801227 Date Extracted: 01/25/08 Lab ID: 801227-02 Date Analyzed: 01/29/08 Data File: 012822.D Matrix: Soil Instrument: GCMS5 Units: mg/kg (ppm) Operator: MB Lower Upper Surrogates: % Recovery: Limit: Limit: Dibromofluoromethane 68 32 147 1,2-Dichloroethane-d4 64 35 150 Toluene-d8 37 35 149 4-Bromofluorobenzene 37 15 196 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Dichlorodifluoromethane <0.5 1,3-Dichloropropane <0.05 Chloromethane <0.05 Tetrachloroethene <0.025 Vinyl chloride 0.12 Dibromochloromethane <0.05 Bromomethane <0.5 1,2-Dibromoethane (EDB) <0.05 Chloroethane <0.5 Chlorobenzene <0.05 Trichlorofluoromethane <0.5 Ethylbenzene 0.89 Acetone <0.5 1,1,1,2-Tetrachloroethane <0.05 1,1-Dichloroethene <0.05 m,p-Xylene 4.8 Methylene chloride <0.5 o-Xylene 3.1 Methyl t-butyl ether (MTBE) <0.05 Styrene 0.051 trans-1,2-Dichloroethene <0.05 Isopropylbenzene 0.24 1,1-Dichloroethane <0.05 Bromoform <0.05 2,2-Dichloropropane <0.05 n-Propylbenzene 0.65 cis-1,2-Dichloroethene 11 Bromobenzene <0.05 Chloroform <0.05 1,3,5-Trimethylbenzene 3.2 2-Butanone (MEK) <0.5 1,1,2,2-Tetrachloroethane <0.05 1,2-Dichloroethane (EDC) <0.05 1,2,3-Trichloropropane <0.05 1,1,1-Trichloroethane <0.05 2-Chlorotoluene <0.05 1,1-Dichloropropene <0.05 4-Chlorotoluene <0.05 Carbon Tetrachloride <0.05 tert-Butylbenzene 0.064 Benzene 0.046 1,2,4-Trimethylbenzene 16 ve Trichloroethene 5.2 sec-Butylbenzene 0.26 1,2-Dichloropropane <0.05 p-Isopropyltoluene 0.78 Bromodichloromethane <0.05 1,3-Dichlorobenzene <0.05 Dibromomethane <0.05 1,4-Dichlorobenzene <0.05 4-Methyl-2-pentanone <0.5 1,2-Dichlorobenzene 0.093 cis-1,3-Dichloropropene <0.05 1,2-Dibromo-3-chloropropane <0.05 Toluene 1.0 1,2,4-Trichlorobenzene <0.1 trans-1,3-Dichloropropene <0.05 Hexachlorobutadiene <0.1 1,1,2-Trichloroethane <0.05 Naphthalene 42 ve 2-Hexanone <0.5 1,2,3-Trichlorobenzene <0.1 n-Butylbenzene <0.5 L Dichloroethyl ether <0.5 L

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

5

Analysis For Volatile Compounds By EPA Method 8260B Client Sample ID: GS02-SW-4’ Client: Evren Northwest, Inc. Date Received: 01/24/08 Project: 351-05009-06, F&BI 801227 Date Extracted: 01/25/08 Lab ID: 801227-02 1/10 Date Analyzed: 01/29/08 Data File: 012815.D Matrix: Soil Instrument: GCMS5 Units: mg/kg (ppm) Operator: MB Lower Upper Surrogates: % Recovery: Limit: Limit: Dibromofluoromethane 76 32 147 1,2-Dichloroethane-d4 74 35 150 Toluene-d8 44 35 149 4-Bromofluorobenzene 46 15 196 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Dichlorodifluoromethane <5 1,3-Dichloropropane <0.5 Chloromethane <0.5 Tetrachloroethene <0.25 Vinyl chloride <0.5 Dibromochloromethane <0.5 Bromomethane <5 1,2-Dibromoethane (EDB) <0.5 Chloroethane <5 Chlorobenzene <0.5 Trichlorofluoromethane <5 Ethylbenzene 0.93 Acetone <5 1,1,1,2-Tetrachloroethane <0.5 1,1-Dichloroethene <0.5 m,p-Xylene 4.7 Methylene chloride <5 o-Xylene 3.0 Methyl t-butyl ether (MTBE) <0.5 Styrene <0.5 trans-1,2-Dichloroethene <0.5 Isopropylbenzene <0.5 1,1-Dichloroethane <0.5 Bromoform <0.5 2,2-Dichloropropane <0.5 n-Propylbenzene 0.67 cis-1,2-Dichloroethene 10 Bromobenzene <0.5 Chloroform <0.5 1,3,5-Trimethylbenzene 3.2 2-Butanone (MEK) <5 1,1,2,2-Tetrachloroethane <0.5 1,2-Dichloroethane (EDC) <0.5 1,2,3-Trichloropropane <0.5 1,1,1-Trichloroethane <0.5 2-Chlorotoluene <0.5 1,1-Dichloropropene <0.5 4-Chlorotoluene <0.5 Carbon Tetrachloride <0.5 tert-Butylbenzene <0.5 Benzene <0.3 1,2,4-Trimethylbenzene 17 Trichloroethene 5.4 sec-Butylbenzene <0.5 1,2-Dichloropropane <0.5 p-Isopropyltoluene 0.88 Bromodichloromethane <0.5 1,3-Dichlorobenzene <0.5 Dibromomethane <0.5 1,4-Dichlorobenzene <0.5 4-Methyl-2-pentanone <5 1,2-Dichlorobenzene <0.5 cis-1,3-Dichloropropene <0.5 1,2-Dibromo-3-chloropropane <0.5 Toluene 1.0 1,2,4-Trichlorobenzene <1 trans-1,3-Dichloropropene <0.5 Hexachlorobutadiene <1 1,1,2-Trichloroethane <0.5 Naphthalene 57 2-Hexanone <5 1,2,3-Trichlorobenzene <1 n-Butylbenzene <5 L Dichloroethyl ether <5 L

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

6

Analysis For Volatile Compounds By EPA Method 8260B Client Sample ID: GS03-EW-4’ Client: Evren Northwest, Inc. Date Received: 01/24/08 Project: 351-05009-06, F&BI 801227 Date Extracted: 01/25/08 Lab ID: 801227-03 Date Analyzed: 01/29/08 Data File: 012820.D Matrix: Soil Instrument: GCMS5 Units: mg/kg (ppm) Operator: MB Lower Upper Surrogates: % Recovery: Limit: Limit: Dibromofluoromethane 54 32 147 1,2-Dichloroethane-d4 55 35 150 Toluene-d8 38 35 149 4-Bromofluorobenzene 41 15 196 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Dichlorodifluoromethane <0.5 1,3-Dichloropropane <0.05 Chloromethane <0.05 Tetrachloroethene <0.025 Vinyl chloride <0.05 Dibromochloromethane <0.05 Bromomethane <0.5 1,2-Dibromoethane (EDB) <0.05 Chloroethane <0.5 Chlorobenzene <0.05 Trichlorofluoromethane <0.5 Ethylbenzene <0.05 Acetone <0.5 1,1,1,2-Tetrachloroethane <0.05 1,1-Dichloroethene <0.05 m,p-Xylene <0.1 Methylene chloride <0.5 o-Xylene 0.055 Methyl t-butyl ether (MTBE) <0.05 Styrene <0.05 trans-1,2-Dichloroethene <0.05 Isopropylbenzene <0.05 1,1-Dichloroethane <0.05 Bromoform <0.05 2,2-Dichloropropane <0.05 n-Propylbenzene 0.064 cis-1,2-Dichloroethene <0.05 Bromobenzene <0.05 Chloroform <0.05 1,3,5-Trimethylbenzene <0.05 2-Butanone (MEK) <0.5 1,1,2,2-Tetrachloroethane <0.05 1,2-Dichloroethane (EDC) <0.05 1,2,3-Trichloropropane <0.05 1,1,1-Trichloroethane <0.05 2-Chlorotoluene <0.05 1,1-Dichloropropene <0.05 4-Chlorotoluene <0.05 Carbon Tetrachloride <0.05 tert-Butylbenzene <0.05 Benzene <0.03 1,2,4-Trimethylbenzene 0.98 Trichloroethene <0.03 sec-Butylbenzene <0.05 1,2-Dichloropropane <0.05 p-Isopropyltoluene 0.10 Bromodichloromethane <0.05 1,3-Dichlorobenzene <0.05 Dibromomethane <0.05 1,4-Dichlorobenzene <0.05 4-Methyl-2-pentanone <0.5 1,2-Dichlorobenzene <0.05 cis-1,3-Dichloropropene <0.05 1,2-Dibromo-3-chloropropane <0.05 Toluene <0.05 1,2,4-Trichlorobenzene <0.1 trans-1,3-Dichloropropene <0.05 Hexachlorobutadiene <0.1 1,1,2-Trichloroethane <0.05 Naphthalene 2.4 2-Hexanone <0.5 1,2,3-Trichlorobenzene <0.1 n-Butylbenzene <0.5 L Dichloroethyl ether <0.5 L

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

7

Analysis For Volatile Compounds By EPA Method 8260B Client Sample ID: GS04-WW-4’ Client: Evren Northwest, Inc. Date Received: 01/24/08 Project: 351-05009-06, F&BI 801227 Date Extracted: 01/25/08 Lab ID: 801227-04 Date Analyzed: 01/26/08 Data File: 012520.D Matrix: Soil Instrument: GCMS5 Units: mg/kg (ppm) Operator: MB Lower Upper Surrogates: % Recovery: Limit: Limit: Dibromofluoromethane 40 32 147 1,2-Dichloroethane-d4 47 35 150 Toluene-d8 30 ip 35 149 4-Bromofluorobenzene 41 15 196 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Dichlorodifluoromethane <0.5 1,3-Dichloropropane <0.05 Chloromethane <0.05 Tetrachloroethene <0.025 Vinyl chloride <0.05 Dibromochloromethane <0.05 Bromomethane <0.5 1,2-Dibromoethane (EDB) <0.05 Chloroethane <0.5 Chlorobenzene <0.05 Trichlorofluoromethane <0.5 Ethylbenzene 0.61 Acetone <0.5 1,1,1,2-Tetrachloroethane <0.05 1,1-Dichloroethene <0.05 m,p-Xylene 0.46 Methylene chloride <0.5 o-Xylene 0.45 Methyl t-butyl ether (MTBE) <0.05 Styrene <0.05 trans-1,2-Dichloroethene <0.05 Isopropylbenzene 0.18 1,1-Dichloroethane <0.05 Bromoform <0.05 2,2-Dichloropropane <0.05 n-Propylbenzene 0.49 cis-1,2-Dichloroethene <0.05 Bromobenzene <0.05 Chloroform <0.05 1,3,5-Trimethylbenzene 0.18 2-Butanone (MEK) <0.5 1,1,2,2-Tetrachloroethane <0.05 1,2-Dichloroethane (EDC) <0.05 1,2,3-Trichloropropane <0.05 1,1,1-Trichloroethane <0.05 2-Chlorotoluene <0.05 1,1-Dichloropropene <0.05 4-Chlorotoluene <0.05 Carbon Tetrachloride <0.05 tert-Butylbenzene <0.05 Benzene <0.03 1,2,4-Trimethylbenzene 6.1 Trichloroethene <0.03 sec-Butylbenzene 0.17 1,2-Dichloropropane <0.05 p-Isopropyltoluene 0.34 Bromodichloromethane <0.05 1,3-Dichlorobenzene <0.05 Dibromomethane <0.05 1,4-Dichlorobenzene <0.05 4-Methyl-2-pentanone <0.5 1,2-Dichlorobenzene 0.078 cis-1,3-Dichloropropene <0.05 1,2-Dibromo-3-chloropropane <0.05 Toluene 0.067 1,2,4-Trichlorobenzene <0.1 trans-1,3-Dichloropropene <0.05 Hexachlorobutadiene <0.1 1,1,2-Trichloroethane <0.05 Naphthalene 11 2-Hexanone <0.5 1,2,3-Trichlorobenzene <0.1 n-Butylbenzene <0.5 L Dichloroethyl ether <0.5 L

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

8

Analysis For Volatile Compounds By EPA Method 8260B Client Sample ID: GS05-TPW-INF-9’ Client: Evren Northwest, Inc. Date Received: 01/24/08 Project: 351-05009-06, F&BI 801227 Date Extracted: 01/25/08 Lab ID: 801227-05 Date Analyzed: 01/29/08 Data File: 012821.D Matrix: Soil Instrument: GCMS5 Units: mg/kg (ppm) Operator: MB Lower Upper Surrogates: % Recovery: Limit: Limit: Dibromofluoromethane 26 ip 32 147 1,2-Dichloroethane-d4 29 ip 35 150 Toluene-d8 22 ip 35 149 4-Bromofluorobenzene 42 15 196 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Dichlorodifluoromethane <0.5 1,3-Dichloropropane <0.05 Chloromethane <0.05 Tetrachloroethene <0.025 Vinyl chloride <0.05 Dibromochloromethane <0.05 Bromomethane <0.5 1,2-Dibromoethane (EDB) <0.05 Chloroethane <0.5 Chlorobenzene <0.05 Trichlorofluoromethane <0.5 Ethylbenzene 0.29 Acetone <0.5 1,1,1,2-Tetrachloroethane <0.05 1,1-Dichloroethene <0.05 m,p-Xylene 0.73 Methylene chloride <0.5 o-Xylene 0.67 Methyl t-butyl ether (MTBE) <0.05 Styrene <0.05 trans-1,2-Dichloroethene <0.05 Isopropylbenzene 0.082 1,1-Dichloroethane <0.05 Bromoform <0.05 2,2-Dichloropropane <0.05 n-Propylbenzene 0.24 cis-1,2-Dichloroethene <0.05 Bromobenzene <0.05 Chloroform <0.05 1,3,5-Trimethylbenzene 0.97 2-Butanone (MEK) <0.5 1,1,2,2-Tetrachloroethane <0.05 1,2-Dichloroethane (EDC) <0.05 1,2,3-Trichloropropane <0.05 1,1,1-Trichloroethane <0.05 2-Chlorotoluene <0.05 1,1-Dichloropropene <0.05 4-Chlorotoluene <0.05 Carbon Tetrachloride <0.05 tert-Butylbenzene <0.05 Benzene <0.03 1,2,4-Trimethylbenzene 5.3 Trichloroethene <0.03 sec-Butylbenzene 0.092 1,2-Dichloropropane <0.05 p-Isopropyltoluene 0.25 Bromodichloromethane <0.05 1,3-Dichlorobenzene <0.05 Dibromomethane <0.05 1,4-Dichlorobenzene <0.05 4-Methyl-2-pentanone <0.5 1,2-Dichlorobenzene <0.05 cis-1,3-Dichloropropene <0.05 1,2-Dibromo-3-chloropropane <0.05 Toluene 0.13 1,2,4-Trichlorobenzene <0.1 trans-1,3-Dichloropropene <0.05 Hexachlorobutadiene <0.1 1,1,2-Trichloroethane <0.05 Naphthalene 16 ve 2-Hexanone <0.5 1,2,3-Trichlorobenzene <0.1 n-Butylbenzene <0.5 L Dichloroethyl ether <0.5 L

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

9

Analysis For Volatile Compounds By EPA Method 8260B Client Sample ID: GS05-TPW-INF-9’ Client: Evren Northwest, Inc. Date Received: 01/24/08 Project: 351-05009-06, F&BI 801227 Date Extracted: 01/25/08 Lab ID: 801227-05 1/100 Date Analyzed: 01/29/08 Data File: 012817.D Matrix: Soil Instrument: GCMS5 Units: mg/kg (ppm) Operator: MB Lower Upper Surrogates: % Recovery: Limit: Limit: Dibromofluoromethane 0 ds 32 147 1,2-Dichloroethane-d4 0 ds 35 150 Toluene-d8 0 ds 35 149 4-Bromofluorobenzene 0 ds 15 196 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Dichlorodifluoromethane <50 1,3-Dichloropropane <5 Chloromethane <5 Tetrachloroethene <2.5 Vinyl chloride <5 Dibromochloromethane <5 Bromomethane <50 1,2-Dibromoethane (EDB) <5 Chloroethane <50 Chlorobenzene <5 Trichlorofluoromethane <50 Ethylbenzene <5 Acetone <50 1,1,1,2-Tetrachloroethane <5 1,1-Dichloroethene <5 m,p-Xylene <10 Methylene chloride <50 o-Xylene <5 Methyl t-butyl ether (MTBE) <5 Styrene <5 trans-1,2-Dichloroethene <5 Isopropylbenzene <5 1,1-Dichloroethane <5 Bromoform <5 2,2-Dichloropropane <5 n-Propylbenzene <5 cis-1,2-Dichloroethene <5 Bromobenzene <5 Chloroform <5 1,3,5-Trimethylbenzene <5 2-Butanone (MEK) <50 1,1,2,2-Tetrachloroethane <5 1,2-Dichloroethane (EDC) <5 1,2,3-Trichloropropane <5 1,1,1-Trichloroethane <5 2-Chlorotoluene <5 1,1-Dichloropropene <5 4-Chlorotoluene <5 Carbon Tetrachloride <5 tert-Butylbenzene <5 Benzene <3 1,2,4-Trimethylbenzene <5 Trichloroethene <3 sec-Butylbenzene <5 1,2-Dichloropropane <5 p-Isopropyltoluene <5 Bromodichloromethane <5 1,3-Dichlorobenzene <5 Dibromomethane <5 1,4-Dichlorobenzene <5 4-Methyl-2-pentanone <50 1,2-Dichlorobenzene <5 cis-1,3-Dichloropropene <5 1,2-Dibromo-3-chloropropane <5 Toluene <5 1,2,4-Trichlorobenzene <10 trans-1,3-Dichloropropene <5 Hexachlorobutadiene <10 1,1,2-Trichloroethane <5 Naphthalene 24 2-Hexanone <50 1,2,3-Trichlorobenzene <10 n-Butylbenzene <50 L Dichloroethyl ether <50 L

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

10

Analysis For Volatile Compounds By EPA Method 8260B Client Sample ID: GS06-TPE-INF-9’ Client: Evren Northwest, Inc. Date Received: 01/24/08 Project: 351-05009-06, F&BI 801227 Date Extracted: 01/25/08 Lab ID: 801227-06 Date Analyzed: 01/29/08 Data File: 012818.D Matrix: Soil Instrument: GCMS5 Units: mg/kg (ppm) Operator: MB Lower Upper Surrogates: % Recovery: Limit: Limit: Dibromofluoromethane 32 32 147 1,2-Dichloroethane-d4 39 35 150 Toluene-d8 23 ip 35 149 4-Bromofluorobenzene 36 15 196 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Dichlorodifluoromethane <0.5 1,3-Dichloropropane <0.05 Chloromethane <0.05 Tetrachloroethene <0.025 Vinyl chloride <0.05 Dibromochloromethane <0.05 Bromomethane <0.5 1,2-Dibromoethane (EDB) <0.05 Chloroethane <0.5 Chlorobenzene <0.05 Trichlorofluoromethane <0.5 Ethylbenzene <0.05 Acetone <0.5 1,1,1,2-Tetrachloroethane <0.05 1,1-Dichloroethene <0.05 m,p-Xylene <0.1 Methylene chloride <0.5 o-Xylene <0.05 Methyl t-butyl ether (MTBE) <0.05 Styrene <0.05 trans-1,2-Dichloroethene <0.05 Isopropylbenzene <0.05 1,1-Dichloroethane <0.05 Bromoform <0.05 2,2-Dichloropropane <0.05 n-Propylbenzene <0.05 cis-1,2-Dichloroethene <0.05 Bromobenzene <0.05 Chloroform <0.05 1,3,5-Trimethylbenzene <0.05 2-Butanone (MEK) <0.5 1,1,2,2-Tetrachloroethane <0.05 1,2-Dichloroethane (EDC) <0.05 1,2,3-Trichloropropane <0.05 1,1,1-Trichloroethane <0.05 2-Chlorotoluene <0.05 1,1-Dichloropropene <0.05 4-Chlorotoluene <0.05 Carbon Tetrachloride <0.05 tert-Butylbenzene <0.05 Benzene <0.03 1,2,4-Trimethylbenzene 0.24 Trichloroethene <0.03 sec-Butylbenzene <0.05 1,2-Dichloropropane <0.05 p-Isopropyltoluene <0.05 Bromodichloromethane <0.05 1,3-Dichlorobenzene <0.05 Dibromomethane <0.05 1,4-Dichlorobenzene <0.05 4-Methyl-2-pentanone <0.5 1,2-Dichlorobenzene <0.05 cis-1,3-Dichloropropene <0.05 1,2-Dibromo-3-chloropropane <0.05 Toluene <0.05 1,2,4-Trichlorobenzene <0.1 trans-1,3-Dichloropropene <0.05 Hexachlorobutadiene <0.1 1,1,2-Trichloroethane <0.05 Naphthalene 0.71 2-Hexanone <0.5 1,2,3-Trichlorobenzene <0.1 n-Butylbenzene <0.5 L Dichloroethyl ether <0.5 L

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

11

Analysis For Volatile Compounds By EPA Method 8260B Client Sample ID: Method Blank Client: Evren Northwest, Inc. Date Received: Not Applicable Project: 351-05009-06, F&BI 801227 Date Extracted: 01/25/08 Lab ID: 080118 mb Date Analyzed: 01/25/08 Data File: 012506.D Matrix: Soil Instrument: GCMS5 Units: mg/kg (ppm) Operator: MB Lower Upper Surrogates: % Recovery: Limit: Limit: Dibromofluoromethane 69 32 147 1,2-Dichloroethane-d4 72 35 150 Toluene-d8 72 35 149 4-Bromofluorobenzene 79 15 196 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Dichlorodifluoromethane <0.5 1,3-Dichloropropane <0.05 Chloromethane <0.05 Tetrachloroethene <0.025 Vinyl chloride <0.05 Dibromochloromethane <0.05 Bromomethane <0.5 1,2-Dibromoethane (EDB) <0.05 Chloroethane <0.5 Chlorobenzene <0.05 Trichlorofluoromethane <0.5 Ethylbenzene <0.05 Acetone <0.5 1,1,1,2-Tetrachloroethane <0.05 1,1-Dichloroethene <0.05 m,p-Xylene <0.1 Methylene chloride <0.5 o-Xylene <0.05 Methyl t-butyl ether (MTBE) <0.05 Styrene <0.05 trans-1,2-Dichloroethene <0.05 Isopropylbenzene <0.05 1,1-Dichloroethane <0.05 Bromoform <0.05 2,2-Dichloropropane <0.05 n-Propylbenzene <0.05 cis-1,2-Dichloroethene <0.05 Bromobenzene <0.05 Chloroform <0.05 1,3,5-Trimethylbenzene <0.05 2-Butanone (MEK) <0.5 1,1,2,2-Tetrachloroethane <0.05 1,2-Dichloroethane (EDC) <0.05 1,2,3-Trichloropropane <0.05 1,1,1-Trichloroethane <0.05 2-Chlorotoluene <0.05 1,1-Dichloropropene <0.05 4-Chlorotoluene <0.05 Carbon Tetrachloride <0.05 tert-Butylbenzene <0.05 Benzene <0.03 1,2,4-Trimethylbenzene <0.05 Trichloroethene <0.03 sec-Butylbenzene <0.05 1,2-Dichloropropane <0.05 p-Isopropyltoluene <0.05 Bromodichloromethane <0.05 1,3-Dichlorobenzene <0.05 Dibromomethane <0.05 1,4-Dichlorobenzene <0.05 4-Methyl-2-pentanone <0.5 1,2-Dichlorobenzene <0.05 cis-1,3-Dichloropropene <0.05 1,2-Dibromo-3-chloropropane <0.05 Toluene <0.05 1,2,4-Trichlorobenzene <0.1 trans-1,3-Dichloropropene <0.05 Hexachlorobutadiene <0.1 1,1,2-Trichloroethane <0.05 Naphthalene <0.05 2-Hexanone <0.5 1,2,3-Trichlorobenzene <0.1 n-Butylbenzene <0.5 L Dichloroethyl ether <0.5 L

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

12

Analysis For Semivolatile Compounds By EPA Method 8270C SIM Client Sample ID: GS02-SW-4’ Client: Evren Northwest, Inc. Date Received: 01/24/08 Project: 351-05009-06, F&BI 801227 Date Extracted: 01/29/08 Lab ID: 801227-02 1/500 Date Analyzed: 01/29/08 Data File: 012912.D Matrix: Soil Instrument: GCMS6 Units: mg/kg (ppm) Operator: YA Lower Upper Surrogates: % Recovery: Limit: Limit: Anthracene-d10 0 ds 50 150 Benzo(a)anthracene-d12 0 ds 35 159 Concentration Compounds: mg/kg (ppm) Naphthalene 110 Acenaphthylene <1 Acenaphthene 25 Fluorene 23 Phenanthrene 58 Anthracene 14 Fluoranthene 2.4 Pyrene 5.6 Benz(a)anthracene 1.1 Chrysene 1.9 Benzo(a)pyrene <1 Benzo(b)fluoranthene <1 Benzo(k)fluoranthene <1 Indeno(1,2,3-cd)pyrene <1 Dibenz(a,h)anthracene <1 Benzo(g,h,i)perylene <1

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

13

Analysis For Semivolatile Compounds By EPA Method 8270C SIM Client Sample ID: Method Blank Client: Evren Northwest, Inc. Date Received: Not Applicable Project: 351-05009-06, F&BI 801227 Date Extracted: 01/29/08 Lab ID: 08-140 mb 1/5 Date Analyzed: 01/29/08 Data File: 012907.D Matrix: Soil Instrument: GCMS6 Units: mg/kg (ppm) Operator: YA Lower Upper Surrogates: % Recovery: Limit: Limit: Anthracene-d10 97 50 150 Benzo(a)anthracene-d12 77 35 159 Concentration Compounds: mg/kg (ppm) Naphthalene <0.01 Acenaphthylene <0.01 Acenaphthene <0.01 Fluorene <0.01 Phenanthrene <0.01 Anthracene <0.01 Fluoranthene <0.01 Pyrene <0.01 Benz(a)anthracene <0.01 Chrysene <0.01 Benzo(a)pyrene <0.01 Benzo(b)fluoranthene <0.01 Benzo(k)fluoranthene <0.01 Indeno(1,2,3-cd)pyrene <0.01 Dibenz(a,h)anthracene <0.01 Benzo(g,h,i)perylene <0.01

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14

Date of Report: 02/04/08 Date Received: 01/24/08 Project: Frontier Leather USY 351-05009-06, F&BI 801227

QUALITY ASSURANCE RESULTS FROM THE ANALYSIS OF SOIL SAMPLES

FOR TOTAL PETROLEUM HYDROCARBONS AS DIESEL EXTENDED USING METHOD NWTPH-Dx

Laboratory Code: 801228-10 (Matrix Spike) Analyte

Reporting

Units

Spike Level

Sample Result

(Wet wt)

Percent Recovery

MS

Percent Recovery MSD

Acceptance

Criteria

RPD

(Limit 20) Diesel Extended mg/kg (ppm) 5,000 <50 106 105 50-150 1 Laboratory Code: Laboratory Control Sample Analyte

Reporting

Units

Spike Level

Percent Recovery

LCS

Acceptance

Criteria Diesel Extended mg/kg (ppm) 5,000 107 70-130

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15

Date of Report: 02/04/08 Date Received: 01/24/08 Project: Frontier Leather USY 351-05009-06, F&BI 801227 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF SOIL SAMPLES

FOR VOLATILES BY EPA METHOD 8260B Laboratory Code: 801240-01 (Duplicate) Analyte

Reporting

Units

Sample Result

Duplicate Result

Relative Percent Difference (Limit 20)

Dichlorodifluoromethane mg/kg (ppm) <0.05 <0.05 nm Chloromethane mg/kg (ppm) <0.05 <0.05 nm Vinyl chloride mg/kg (ppm) <0.05 <0.05 nm Bromomethane mg/kg (ppm) <0.5 <0.5 nm Chloroethane mg/kg (ppm) <0.5 <0.5 nm Trichlorofluoromethane mg/kg (ppm) <0.5 <0.5 nm Acetone mg/kg (ppm) <0.5 <0.5 nm 1,1-Dichloroethene mg/kg (ppm) <0.05 <0.05 nm Methylene chloride mg/kg (ppm) <0.5 <0.5 nm Methyl t-butyl ether (MTBE) mg/kg (ppm) <0.05 <0.05 nm trans-1,2-Dichloroethene mg/kg (ppm) <0.05 <0.05 nm 1,1-Dichloroethane mg/kg (ppm) <0.05 <0.05 nm 2,2-Dichloropropane mg/kg (ppm) <0.05 <0.05 nm cis-1,2-Dichloroethene mg/kg (ppm) <0.05 <0.05 nm Chloroform mg/kg (ppm) <0.05 <0.05 nm 2-Butanone (MEK) mg/kg (ppm) <0.5 <0.5 nm 1,2-Dichloroethane (EDC) mg/kg (ppm) <0.05 <0.05 nm 1,1,1-Trichloroethane mg/kg (ppm) <0.05 <0.05 nm 1,1-Dichloropropene mg/kg (ppm) <0.05 <0.05 nm Carbon Tetrachloride mg/kg (ppm) <0.05 <0.05 nm Benzene mg/kg (ppm) <0.03 <0.03 nm Trichloroethene mg/kg (ppm) <0.03 <0.03 nm 1,2-Dichloropropane mg/kg (ppm) <0.05 <0.05 nm Bromodichloromethane mg/kg (ppm) <0.05 <0.05 nm Dibromomethane mg/kg (ppm) <0.05 <0.05 nm 4-Methyl -2-pentanone mg/kg (ppm) <0.5 <0.5 nm cis-1,3-Dichloropropene mg/kg (ppm) <0.05 <0.05 nm Toluene mg/kg (ppm) <0.05 <0.05 nm trans-1,3-Dichloropropene mg/kg (ppm) <0.05 <0.05 nm 1,1,2-Trichloroethane mg/kg (ppm) <0.05 <0.05 nm 2-Hexanone mg/kg (ppm) <0.5 <0.5 nm 1,3-Dichloropropane mg/kg (ppm) <0.05 <0.05 nm Tetrachloroethene mg/kg (ppm) <0.025 <0.025 nm Dibromochloromethane mg/kg (ppm) <0.05 <0.05 nm 1,2-Dibromoethane (EDB) mg/kg (ppm) <0.05 <0.05 nm Chlorobenzene mg/kg (ppm) <0.05 <0.05 nm Ethylbenzene mg/kg (ppm) <0.05 <0.05 nm 1,1,1,2-Tetrachloroethane mg/kg (ppm) <0.05 <0.05 nm m,p-Xylene mg/kg (ppm) <0.1 <0.1 nm o-Xylene mg/kg (ppm) <0.05 <0.05 nm Styrene mg/kg (ppm) <0.05 <0.05 nm Isopropylbenzene mg/kg (ppm) <0.05 <0.05 nm Bromoform mg/kg (ppm) <0.05 <0.05 nm n-Propylbenzene mg/kg (ppm) <0.05 <0.05 nm Bromobenzene mg/kg (ppm) <0.05 <0.05 nm 1,3,5-Trimethylbenzene mg/kg (ppm) <0.05 <0.05 nm 1,1,2,2-Tetrachloroethane mg/kg (ppm) <0.05 <0.05 nm 1,2,3-Trichloropropane mg/kg (ppm) <0.05 <0.05 nm 2-Chlorotoluene mg/kg (ppm) <0.05 <0.05 nm 4-Chlorotoluene mg/kg (ppm) <0.05 <0.05 nm tert-Butylbenzene mg/kg (ppm) <0.05 <0.05 nm 1,2,4-Trimethylbenzene mg/kg (ppm) <0.05 <0.05 nm sec-Butylbenzene mg/kg (ppm) <0.05 <0.05 nm p-Isopropyltoluene mg/kg (ppm) <0.05 <0.05 nm 1,3-Dichlorobenzene mg/kg (ppm) <0.05 <0.05 nm 1,4-Dichlorobenzene mg/kg (ppm) <0.05 <0.05 nm 1,2-Dichlorobenzene mg/kg (ppm) <0.05 <0.05 nm 1,2-Dibromo-3-chloropropane mg/kg (ppm) <0.05 <0.05 nm 1,2,4-Trichlorobenzene mg/kg (ppm) <0.1 <0.1 nm Hexachlorobutadiene mg/kg (ppm) <0.1 <0.1 nm Naphthalene mg/kg (ppm) <0.05 <0.05 nm 1,2,3-Trichlorobenzene mg/kg (ppm) <0.1 <0.1 nm

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

16

Date of Report: 02/04/08 Date Received: 01/24/08 Project: Frontier Leather USY 351-05009-06, F&BI 801227 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF SOIL SAMPLES

FOR VOLATILES BY EPA METHOD 8260B Laboratory Code: Laboratory Control Sample Analyte

Reporting

Units

Spike Level

Percent Recovery

LCS

Percent Recovery

LCSD

Acceptance

Criteria

RPD

(Limit 20) Dichlorodifluoromethane mg/kg (ppm) 2.5 61 59 29-163 3 Chloromethane mg/kg (ppm) 2.5 88 81 28-147 8 Vinyl chloride mg/kg (ppm) 2.5 100 91 38-143 9 Bromomethane mg/kg (ppm) 2.5 126 106 32-163 17 Chloroethane mg/kg (ppm) 2.5 120 101 10-165 17 Trichlorofluoromethane mg/kg (ppm) 2.5 198 vo 164 22-167 19 Acetone mg/kg (ppm) 2.5 106 104 20-172 2 1,1-Dichloroethene mg/kg (ppm) 2.5 93 85 42-140 9 Methylene chloride mg/kg (ppm) 2.5 102 93 53-137 9 Methyl t-butyl ether (MTBE) mg/kg (ppm) 2.5 94 94 73-122 0 trans-1,2-Dichloroethene mg/kg (ppm) 2.5 97 90 70-122 7 1,1-Dichloroethane mg/kg (ppm) 2.5 98 94 77-114 4 2,2-Dichloropropane mg/kg (ppm) 2.5 102 100 65-135 2 cis-1,2-Dichloroethene mg/kg (ppm) 2.5 101 97 77-120 4 Chloroform mg/kg (ppm) 2.5 100 96 76-117 4 2-Butanone (MEK) mg/kg (ppm) 2.5 99 101 52-153 2 1,2-Dichloroethane (EDC) mg/kg (ppm) 2.5 101 98 76-116 3 1,1,1-Trichloroethane mg/kg (ppm) 2.5 105 101 79-120 4 1,1-Dichloropropene mg/kg (ppm) 2.5 104 101 76-123 3 Carbon Tetrachloride mg/kg (ppm) 2.5 109 106 75-126 3 Benzene mg/kg (ppm) 2.5 98 96 76-118 2 Trichloroethene mg/kg (ppm) 2.5 99 96 75-121 3 1,2-Dichloropropane mg/kg (ppm) 2.5 104 102 78-123 2 Bromodichloromethane mg/kg (ppm) 2.5 110 107 79-126 3 Dibromomethane mg/kg (ppm) 2.5 105 102 79-121 3 4-Methyl -2-pentanone mg/kg (ppm) 2.5 115 114 52-151 1 cis-1,3-Dichloropropene mg/kg (ppm) 2.5 110 108 80-127 2 Toluene mg/kg (ppm) 2.5 106 105 76-122 1 trans-1,3-Dichloropropene mg/kg (ppm) 2.5 114 112 80-126 2 1,1,2-Trichloroethane mg/kg (ppm) 2.5 102 103 77-121 1 2-Hexanone mg/kg (ppm) 2.5 123 124 67-126 1 1,3-Dichloropropane mg/kg (ppm) 2.5 105 105 76-122 0 Tetrachloroethene mg/kg (ppm) 2.5 107 105 77-124 2 Dibromochloromethane mg/kg (ppm) 2.5 99 97 73-127 2 1,2-Dibromoethane (EDB) mg/kg (ppm) 2.5 107 105 78-126 2 Chlorobenzene mg/kg (ppm) 2.5 101 99 79-113 2 Ethylbenzene mg/kg (ppm) 2.5 105 103 77-120 2 1,1,1,2-Tetrachloroethane mg/kg (ppm) 2.5 109 105 79-125 4 m,p-Xylene mg/kg (ppm) 5 109 107 79-121 2 o-Xylene mg/kg (ppm) 2.5 114 110 80-123 4 Styrene mg/kg (ppm) 2.5 99 96 81-124 3 Isopropylbenzene mg/kg (ppm) 2.5 115 110 79-123 4 Bromoform mg/kg (ppm) 2.5 98 93 65-124 5 n-Propylbenzene mg/kg (ppm) 2.5 113 112 77-123 1 Bromobenzene mg/kg (ppm) 2.5 105 104 78-122 1 1,3,5-Trimethylbenzene mg/kg (ppm) 2.5 112 110 79-123 2 1,1,2,2-Tetrachloroethane mg/kg (ppm) 2.5 100 100 73-121 0 1,2,3-Trichloropropane mg/kg (ppm) 2.5 98 97 69-123 1 2-Chlorotoluene mg/kg (ppm) 2.5 108 106 77-120 2 4-Chlorotoluene mg/kg (ppm) 2.5 108 106 77-121 2 tert-Butylbenzene mg/kg (ppm) 2.5 114 111 77-124 3 1,2,4-Trimethylbenzene mg/kg (ppm) 2.5 114 111 78-123 3 sec-Butylbenzene mg/kg (ppm) 2.5 113 111 77-122 2 p-Isopropyltoluene mg/kg (ppm) 2.5 114 111 79-126 3 1,3-Dichlorobenzene mg/kg (ppm) 2.5 104 102 78-119 2 1,4-Dichlorobenzene mg/kg (ppm) 2.5 98 96 77-114 2 1,2-Dichlorobenzene mg/kg (ppm) 2.5 106 104 78-120 2 1,2-Dibromo-3-chloropropane mg/kg (ppm) 2.5 102 102 66-133 0 1,2,4-Trichlorobenzene mg/kg (ppm) 2.5 112 112 71-129 0 Hexachlorobutadiene mg/kg (ppm) 2.5 109 107 65-134 2 Naphthalene mg/kg (ppm) 2.5 97 98 51-158 1 1,2,3-Trichlorobenzene mg/kg (ppm) 2.5 115 116 37-182 1

Note: The initial calibration verification result for chloroethane and trichlorofluoromethane exceeded 15% deviation. The average deviation for all compounds was not greater than 15%; therefore, the calibration is considered valid.

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

17

Date of Report: 02/04/08 Date Received: 01/24/08 Project: Frontier Leather USY 351-05009-06, F&BI 801227

QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF SOIL SAMPLES FOR PNA’S BY EPA METHOD 8270C SIM

Laboratory Code: 801273-02 (Duplicate) Analyte

Reporting

Units

Sample Result

Duplicate

Result

Relative Percent Difference (Limit 20)

Naphthalene mg/kg (ppm) <0.01 <0.01 nm Acenaphthylene mg/kg (ppm) <0.01 <0.01 nm Acenaphthene mg/kg (ppm) <0.01 <0.01 nm Fluorene mg/kg (ppm) <0.01 <0.01 nm Phenanthrene mg/kg (ppm) <0.01 <0.01 nm Anthracene mg/kg (ppm) <0.01 <0.01 nm Fluoranthene mg/kg (ppm) <0.01 <0.01 nm Pyrene mg/kg (ppm) <0.01 <0.01 nm Benz(a)anthracene mg/kg (ppm) <0.01 <0.01 nm Chrysene mg/kg (ppm) <0.01 <0.01 nm Benzo(b)fluoranthene mg/kg (ppm) <0.01 <0.01 nm Benzo(k)fluoranthene mg/kg (ppm) <0.01 <0.01 nm Benzo(a)pyrene mg/kg (ppm) <0.01 <0.01 nm Indeno(1,2,3-cd)pyrene mg/kg (ppm) <0.01 <0.01 nm Dibenz(a,h)anthracene mg/kg (ppm) <0.01 <0.01 nm Benzo(g,h,i)perylene mg/kg (ppm) <0.01 <0.01 nm Laboratory Code: 801273-02 (Matrix Spike) Analyte

Reporting

Units

Spike Level

Sample Result

Percent Recovery

MS

Acceptance

Criteria Naphthalene mg/kg (ppm) 0.17 <0.01 84 50-150 Acenaphthylene mg/kg (ppm) 0.17 <0.01 80 16-167 Acenaphthene mg/kg (ppm) 0.17 <0.01 80 58-108 Fluorene mg/kg (ppm) 0.17 <0.01 88 57-113 Phenanthrene mg/kg (ppm) 0.17 <0.01 93 30-138 Anthracene mg/kg (ppm) 0.17 <0.01 90 42-132 Fluoranthene mg/kg (ppm) 0.17 <0.01 89 45-145 Pyrene mg/kg (ppm) 0.17 <0.01 87 44-139 Benz(a)anthracene mg/kg (ppm) 0.17 <0.01 68 17-134 Chrysene mg/kg (ppm) 0.17 <0.01 75 10-157 Benzo(b)fluoranthene mg/kg (ppm) 0.17 <0.01 75 37-123 Benzo(k)fluoranthene mg/kg (ppm) 0.17 <0.01 75 28-134 Benzo(a)pyrene mg/kg (ppm) 0.17 <0.01 70 55-115 Indeno(1,2,3-cd)pyrene mg/kg (ppm) 0.17 <0.01 84 61-104 Dibenz(a,h)anthracene mg/kg (ppm) 0.17 <0.01 87 69-100 Benzo(g,h,i)perylene mg/kg (ppm) 0.17 <0.01 86 60-105

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

18

Date of Report: 02/04/08 Date Received: 01/24/08 Project: Frontier Leather USY 351-05009-06, F&BI 801227

QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF SOIL SAMPLES FOR PNA’S BY EPA METHOD 8270C SIM

Laboratory Code: Laboratory Control Sample Analyte

Reporting

Units

Spike Level

Percent Recovery

LCS

Percent Recovery

LCSD

Acceptance

Criteria

RPD

(Limit 20) Naphthalene mg/kg (ppm) 0.17 89 87 72-112 2 Acenaphthylene mg/kg (ppm) 0.17 81 79 68-112 2 Acenaphthene mg/kg (ppm) 0.17 84 82 70-111 2 Fluorene mg/kg (ppm) 0.17 93 90 69-110 3 Phenanthrene mg/kg (ppm) 0.17 97 94 68-111 3 Anthracene mg/kg (ppm) 0.17 93 91 67-110 2 Fluoranthene mg/kg (ppm) 0.17 93 89 68-114 4 Pyrene mg/kg (ppm) 0.17 91 87 68-114 4 Benz(a)anthracene mg/kg (ppm) 0.17 71 68 58-108 4 Chrysene mg/kg (ppm) 0.17 78 75 64-115 4 Benzo(b)fluoranthene mg/kg (ppm) 0.17 77 74 54-111 4 Benzo(k)fluoranthene mg/kg (ppm) 0.17 81 77 54-119 5 Benzo(a)pyrene mg/kg (ppm) 0.17 69 66 61-123 4 Indeno(1,2,3-cd)pyrene mg/kg (ppm) 0.17 94 86 46-126 9 Dibenz(a,h)anthracene mg/kg (ppm) 0.17 93 89 57-119 4 Benzo(g,h,i)perylene mg/kg (ppm) 0.17 91 88 60-116 3 Note: The calibration verification result for benz(a)anthracene exceeded 15% deviation. The average deviation for all compounds was not greater than 15%; therefore, the initial calibration is considered valid.

FRIEDMAN & BRUYA, INC. _________________________________________________

ENVIRONMENTAL CHEMISTS

19

Data Qualifiers & Definitions a - The analyte was detected at a level less than five times the reporting limit. The RPD results may not provide reliable information on the variability of the analysis.

A1 – More than one compound of similar molecule structure was identified with equal probablility.

b - The analyte was spiked at a level that was less than five times that present in the sample. Matrix spike recoveries may not be meaningful.

ca - The calibration results for this range fell outside of acceptance criteria. The value reported is an estimate.

c - The presence of the analyte indicated may be due to carryover from previous sample injections.

d - The sample was diluted. Detection limits may be raised due to dilution.

ds - The sample was diluted. Detection limits are raised due to dilution and surrogate recoveries may not be meaningful.

dv - Insufficient sample was available to achieve normal reporting limits and limits are raised accordingly.

fb - The analyte indicated was found in the method blank. The result should be considered an estimate.

fc – The compound is a common laboratory and field contaminant.

hr - The sample and duplicate were reextracted and reanalyzed. RPD results were still outside of control limits. The variability is attributed to sample inhomogeneity.

ht - The sample was extracted outside of holding time. Results should be considered estimates.

ip - Recovery fell outside of normal control limits. Compounds in the sample matrix interfered with the quantitation of the analyte.

j – The result is below normal reporting limits. The value reported is an estimate.

J - The internal standard associated with the analyte is out of control limits. The reported concentration is an estimate.

jl - The analyte result in the laboratory control sample is out of control limits. The reported concentration should be considered an estimate.

jr - The rpd result in laboratory control sample associated with the analyte is out of control limits. The reported concentration should be considered an estimate.

js - The surrogate associated with the analyte is out of control limits. The reported concentration should be considered an estimate.

lc - The presence of the compound indicated is likely due to laboratory contamination.

L - The reported concentration was generated from a library search.

nm - The analyte was not detected in one or more of the duplicate analyses. Therefore, calculation of the RPD is not applicable.

pc – The sample was received in a container not approved by the method. The value reported should be considered an estimate.

pr – The sample was received with incorrect preservation. The value reported should be considered an estimate.

ve - The value reported exceeded the calibration range established for the analyte. The reported concentration should be considered an estimate.

vo - The value reported fell outside the control limits established for this analyte.

x - The pattern of peaks present is not indicative of diesel.

y - The pattern of peaks present is not indicative of motor oil.

APPENDIX D SOIL MATRIX SCORESHEET AND CHECKLIST

Depth to Groundwater < 25 feet (10) 25 – 50 feet (7) 10 51 – 100 feet (4) > 100 feet (1) Mean Annual Precipitation > 45 inches (10) 20 – 45 inches (5) 5 < 20 inches (1) Native Soil Types Coarse sands, gravels (10) Silts, fine sands (5) 5 Clays (1) Sensitivity of uppermost Aquifer Sole Source (10) Current Potable (7) 4 Future Potable (4) Non-potable (1) Potential Receptors Many, near (10) Medium (5) 1 Few, far (1)

TOTAL SCORE = 25

Cleanup level in ppm TPH Matrix Score

Gasoline Diesel Level 1: > 40 pts. 40 100 Level 2: 25 - 40 pts. 80 500 Level 3: < 25 pts. 130 1000

SOIL MATRIX CHECKLIST

X____ 1. The release of petroleum has been reported to the Department of Environmental Quality (220). X____ 2. The Matrix Score Sheet has been completed for this site, unless the site is cleaned up to the most stringent cleanup level (320). X____ 3. The required hydrocarbon identification test (TPH-HCID) has been performed (335 (3)), and, if detectable levels were found, the appropriate analytical method or methods have been used to measure the levels of contamination (350). X____ 4 A sketch has been made of this site (345 (1)) which clearly shows: X____ a. The location of all buildings and other key features, both man-made and natural; X____ b. The names of adjacent streets and properties; X____ c. The location of all excavations including those that were for the removal of tanks and association piping as well as those that were strictly for the removal of contaminated soils; X____ d. The location of all product storage tanks, lines and dispensers, including those that were decommissioned as well as those that remain on the site; and X____ e. All soil and water sample locations. X____ 5. If any contaminated soil in excess of matrix limits has been left on site, the reason for leaving this soil has been explained and the requirements of 355 (4) have been met. X____ 6. If water was present in the tank pit, the Department was notified, the water was pumped from the pit, and the requirements of 340 (4) have been met. X____ 7. All soil and/or water samples have been collected, coded, stored and shipped as specified in the rules, and proper chain-of-custody forms have been filed out (345). X____ 8. If a release from a waste oil tank was discovered, at least one sample has been analyzed by the methods specified in 350 (5). NA __ 9. If a tank was decommissioned in place, the Department gave prior approval for a site-specific sampling plan (340 (5)). X 10. A report have been prepared which includes a detailed description of everything that was observed and performed at the site, contains all of the information required by the rules (360), and presents findings and recommendations which are consistent with Departmental regulations.

APPENDIX E WASTE RECIEPTS

.2 /:. r/T>.-ti I- q T 828271 ~/~/3~ 10065

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WASTEMAHIFEST OOO000e15727 1 (800) 567-7455 .Q:Q 3619962 JJK 5. GeneralD"s Na~ and IJaiflqAddress Generalg(s Sile Address ~f dillerenll/lan maJling address}

PACmC III, LLC 15lU 51 DUGOI ST

Glneralmll~D-Di mu (5'3188HII9 6. TrJIlSllOIlfr 1Company Name

West Coast MarIne Clean1ng In.

PACmC.III; ~LC

151ft 51 DUGOR;, ST. ; I SHKUOoo at 97tH 15'JI88H'U.

US EPA 10 Numl:er

I W1ID988479440 1. Transporl9f 2Ganpany Name US. EPA 10 Number

8. DesigNlat FaQity Na..... and Solo A6<lreSs

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Month Day Vear

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E ¥!" 8700-22 (Rev.:Hl5) Prellious editlons are ob5oIeG (j ESIGNATED FA~ lTV TO DESTINATION STATE (IF REQUIRED)

828158 10050 (F designed for use on elite (12-pitct1) typewriter) Form Approved. OMS No. 2050 0039

/ print or type. orm /~..!!- RDOUS -11. Generalor 10 Number 12.page11ofI3.Emerg:::~ons:::e_74"JMo~d3~gi9eg 61UNIFORM HAZA

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5. Generator's Name and Maiing Address

PACUle III, LLCPAClPIC III, LLC \

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General no 07111 U.S. EPA 10 Number"6.Transporter 1 Company Name . .~ ~.•_~... r,..... ""'t....~ ...~~.... rl 'eJ>

Tn I U.S. EPA 10 Number'

7.Transporter 2 Compar,y Name

I I,).S. EPA \0 NlMTlber8. Design~;ed Facility Name and Site Address,

lItrRLINGTON KRVIiOJlIKRTAL, IRC: nCOIlA.pLAlr, . 17.1 Bast Alexander Avenue

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~x r, I certify lhal!he contents of this cons!gnm~nl c?nfonn to !he terms of the atiached EPAkknowledgment of Consent . ' J c:i:that the wasle minimization statement identified In 40 CFR 262.27(a) (if I am alarge quantity generator) or (b) (If I am a small quantity generator) is true.

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Manifest Reference Number. U.S. EPA ID Number

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WASTE MANAGEMENT, INC….NON HAZARDOUS WASTE DISPOSAL SOLUTIONS FOR THE PACIFIC NORTHWEST

Riverbend Landfill, Inc. 13469 SW HIGHWAY 18 McMINVILLE, OR 97128

PERMIT # 1683 PERMIT TO DISPOSE OF NON-HAZARDOUS MATERIALS

This permit authorizes disposal of Customer’s waste materials in accordance with the Industrial Waste & Disposal Services Agreement dated ____7/03__________.

EXPIRES: 04/17/08

GENERATOR: SHEWOOD OAKS CARE FACILITY DESCRIPTION:CONSTRUCTION DEBRIS WITH METALS - CLEAN UP MATERIAL

TONS:5000

SPECIAL WASTE PCS LOCATION: SHERWOOD, OREGON 210 SW OREGON STREET

COUNTY:Washington

CONTACT: BRENT JORGENSON PHONE: 503-692-8118 FAX: 503-885-9702

BILLING:Landfill account CREEKSIDE ENVIRONMENTAL PO#: N/A JOB#: N/A

We accept business checks, cash, VISA / Mastercard or charge(with prior approval) SPECIAL HANDLING : NOTE: NON-SYSTEMS LICENSE REQUIRED

APPROVED: KRISTIN CASTNER DATE: 01/17/08 3:28:30 PM

A COPY OF THIS PERMIT MUST BE SHOWN BY EACH DRIVER THERE IS A MINIMUM CHARGE OF $50-$60 FOR EACH LOAD OF SPECIAL WASTE

HAZARDOUS WASTE IS STRICTLY PROHIBITED

Frontier Leather ProjectArsenic Soil Concrete Debris Disposal Report

Hillsboro Tonnage Report 1683 12/1/07-2/1/08

Organization ID Customer Name (Site) Ticket In (Date/Time) Ticket No Profile Nm (Master) Profile Nm (Site) Material Nm - Ticket TonsRate UOM -Material

S03302 CREEKSIDEENV 1/25/2008 15:07 588116 168-1683 1683 Declassified-Tons 6.4 TonsS03302 CREEKSIDEENV 1/25/2008 15:09 588117 168-1683 1683 Declassified-Tons 10.14 TonsS03302 CREEKSIDEENV 1/25/2008 7:44 587967 168-1683 1683 Declassified-Tons 5.4 TonsS03302 CREEKSIDEENV 1/25/2008 12:30 588053 168-1683 1683 Declassified-Tons 8.97 TonsS03302 CREEKSIDEENV 1/25/2008 12:32 588054 168-1683 1683 Declassified-Tons 4.33 TonsS03302 CREEKSIDEENV 1/29/2008 14:16 588569 168-1683 1683 Declassified-Tons 10.01 TonsS03302 CREEKSIDEENV 1/29/2008 14:17 588570 168-1683 1683 Declassified-Tons 11.66 TonsS03302 CREEKSIDEENV 1/29/2008 14:39 588577 168-1683 1683 Declassified-Tons 12.64 TonsS03302 CREEKSIDEENV 1/29/2008 8:53 588461 168-1683 1683 Declassified-Tons 9.46 TonsS03302 CREEKSIDEENV 1/29/2008 8:55 588462 168-1683 1683 Declassified-Tons 8.95 TonsS03302 CREEKSIDEENV 1/29/2008 9:01 588465 168-1683 1683 Declassified-Tons 10.19 TonsS03302 CREEKSIDEENV 1/29/2008 11:41 588512 168-1683 1683 Declassified-Tons 10.47 TonsS03302 CREEKSIDEENV 1/29/2008 11:42 588513 168-1683 1683 Declassified-Tons 7.59 TonsS03302 CREEKSIDEENV 1/29/2008 12:22 588530 168-1683 1683 Declassified-Tons 9.98 TonsS03302 CREEKSIDEENV 1/30/2008 14:20 588732 168-1683 1683 Declassified-Tons 10.17 TonsS03302 CREEKSIDEENV 1/30/2008 14:40 588740 168-1683 1683 Declassified-Tons 12.72 TonsS03302 CREEKSIDEENV 1/30/2008 4:48 588601 168-1683 1683 Declassified-Tons 10.78 TonsS03302 CREEKSIDEENV 1/30/2008 5:23 588603 168-1683 1683 Declassified-Tons 16.46 TonsS03302 CREEKSIDEENV 1/30/2008 7:41 588625 168-1683 1683 Declassified-Tons 12.34 TonsS03302 CREEKSIDEENV 1/30/2008 7:44 588626 168-1683 1683 Declassified-Tons 11.8 TonsS03302 CREEKSIDEENV 1/30/2008 9:40 588653 168-1683 1683 Declassified-Tons 10.62 TonsS03302 CREEKSIDEENV 1/30/2008 10:03 588657 168-1683 1683 Declassified-Tons 13.07 TonsS03302 CREEKSIDEENV 1/30/2008 12:07 588700 168-1683 1683 Declassified-Tons 8.31 TonsS03302 CREEKSIDEENV 1/30/2008 12:25 588705 168-1683 1683 Declassified-Tons 17.63 TonsS03302 CREEKSIDEENV 1/31/2008 4:56 588766 168-1683 1683 Declassified-Tons 4.92 TonsS03302 CREEKSIDEENV 1/31/2008 5:32 588770 168-1683 1683 Declassified-Tons 7.66 TonsS03302 CREEKSIDEENV 1/31/2008 7:29 588785 168-1683 1683 Declassified-Tons 8.07 TonsS03302 CREEKSIDEENV 1/31/2008 7:45 588787 168-1683 1683 Declassified-Tons 11.91 TonsS03302 CREEKSIDEENV 1/31/2008 9:16 588811 168-1683 1683 Declassified-Tons 11.45 TonsS03302 CREEKSIDEENV 1/31/2008 9:36 588817 168-1683 1683 Declassified-Tons 12.67 TonsS03302 CREEKSIDEENV 1/31/2008 11:16 588845 168-1683 1683 Declassified-Tons 9.79 TonsS03302 CREEKSIDEENV 2/1/2008 8:09 588961 168-1683 1683 Declassified-Tons 7.94 TonsS03302 CREEKSIDEENV 2/1/2008 8:09 588991 168-1683 1683 Declassified-Tons 6.15 Tons

Total: 330.65 Tons

WASTE MANAGEMENT, INC ….NON HAZARDOUS WASTE DISPOSAL SOLUTIONS FOR THE PACIFIC NORTHWEST

Hillsboro Landfill, Inc. 3205 SE MINTER BRIDGE ROAD HILLSBORO, OR 97123

PERMIT # 6159 PERMIT TO DISPOSE OF NON-HAZARDOUS MATERIALS

This permit authorizes disposal of Customer’s waste materials in accordance with the Industrial Waste & Disposal Services Agreement dated __4/2003_____________.

EXPIRES: 1/2/09

GENERATOR: CREEKSIDE ENVIRONMENTAL CONSULTING, LLC DESCRIPTION:PCS - HEATING OIL AND DIESEL TONS:5000

SPECIAL WASTE CS CLEAN-UP MATERIAL

LOCATION: TUALATIN, OREGON COUNTY:Washington CONTACT: BRENT JORGENSON PHONE: 503-692-8118 FAX: 503-885-9702

BILLING:Landfill account CREEKSIDE ENVIRONMENTAL PO#: N/A JOB#: N/A

We accept business checks, cash, VISA / Mastercard or charge(with prior approval) SPECIAL HANDLING : NOTE: SUBMIT ANALYTICAL PER JOB FOR APPROVAL AND TONNAGE INCREASE. METRO ADDRESSES ONLY, DIESEL AND HEATING OIL TANK PULLS AND CLEAN-UPS ONLY. MK TT TyT

APPROVED: Joan Bartz DATE: 01/17/08 2:37:03 PM

A COPY OF THIS PERMIT MUST BE SHOWN BY EACH DRIVER THERE IS A MINIMUM CHARGE OF $50-$60 FOR EACH LOAD OF SPECIAL WASTE

HAZARDOUS WASTE IS STRICTLY PROHIBITED

Frontier Leather ProjectPetrolueum Impacted Soil Disposal Report

Hillsboro Tonnage Report 6159 12/1/07-2/1/08

Organization ID Customer Name (Site) Ticket In (Date/Time) Ticket No Profile Nm (Master) Profile Nm (Site) Material Nm - Ticket TonsRate UOM - Material

S03305 CREEKSIDEENV 1/21/2008 8:30 1119877 168-6159 6159 Cont Soil Pet-RGC-To 19.77 TonsS03305 CREEKSIDEENV 1/23/2008 14:07 1120560 168-6159 6159 Cont Soil Pet-RGC-To 15.86 TonsS03305 CREEKSIDEENV 1/23/2008 15:44 1120586 168-6159 6159 Cont Soil Pet-RGC-To 14.54 TonsS03305 CREEKSIDEENV 1/23/2008 12:04 1120499 168-6159 6159 Cont Soil Pet-RGC-To 14.21 TonsS03305 CREEKSIDEENV 1/24/2008 13:27 1120825 168-6159 6159 Cont Soil Pet-RGC-To 13.27 TonsS03305 CREEKSIDEENV 1/24/2008 16:49 1120910 168-6159 6159 Cont Soil Pet-RGC-To 12.7 TonsS03305 CREEKSIDEENV 1/24/2008 8:55 1120659 168-6159 6159 Cont Soil Pet-RGC-To 14.61 TonsS03305 CREEKSIDEENV 1/24/2008 10:29 1120712 168-6159 6159 Cont Soil Pet-RGC-To 14.44 TonsS03305 CREEKSIDEENV 1/24/2008 11:58 1120770 168-6159 6159 Cont Soil Pet-RGC-To 14.78 TonsS03305 CREEKSIDEENV 1/31/2008 15:00 1122126 168-6159 6159 Cont Soil Pet-RGC-To 11.27 TonsS03305 CREEKSIDEENV 1/31/2008 16:53 1122143 168-6159 6159 Cont Soil Pet-RGC-To 12.14 TonsS03305 CREEKSIDEENV 2/1/2008 8:58 1122190 168-6159 6159 Cont Soil Pet-RGC-To 13.29 Tons

Total: 170.88 Tons