Stantec Consulting Services, Inc. 12075 Corporate Parkway ... · 10/9/2015 · BRRTS No. - Bureau...

Stantec Consulting Services, Inc. 12075 Corporate Parkway, Suite 200 Mequon, Wisconsin 53092

October 9, 2015

Attention: Mark Drews Remediation and Redevelopment Program Wisconsin Department of Natural Resources Waukesha Service Center 141 NW Barstow Street, Room 180 Waukesha, WI 53188 Reference: Site Investigation, Soil Management, and Capping Plan – PAH Impacted Areas, St. Ann

Center for Intergenerational Care, 2450 West North Avenue, Milwaukee, Wisconsin, DNR BRRTS Activity #02-41-56425, DNR FID #341265210

Dear Mark,

This letter was prepared by Stantec Consulting Services Inc. (Stantec) in response to the “Responsible Party” letter dated August 28, 2015 issued by the Wisconsin Department of Natural Resources (WDNR) for the referenced property (WDNR, 2015). The subject property is the location of the new St. Ann Center for Intergenerational Care – Bucyrus Campus, a $25 million facility designed to support and serve one of the most economically depressed neighborhoods in the State of Wisconsin as well as provide employment for up to 200 residents. The work plan presented herein includes two major components: (a) a work plan for proposed additional investigation activities to further assess the nature and extent of polynuclear aromatic hydrocarbon (PAH) impacts in soil and stockpiled soil/fill materials generated during construction, and (b) a soil management/capping plan to address PAH-impacted soil or fill materials that present a threat to human health from direct contact.

1.0 BACKGROUND INFORMATION

1.1 GENERAL SITE AND PROJECT INFORMATION

General site and project information required by WDNR are summarized below.

1. Project Title and Purpose

St. Ann Center for Intergenerational Care – Bucyrus Campus Development (Phase 2)

2. Key Site Contact Information

Owner: St. Ann Center for Intergenerational Care

2801 E. Morgan St., Milwaukee, WI 53207

Contact: Sr. Edna Lonergan

Responsible

Party:

Same as above

October 9, 2015 Mark Drews of 17

Reference: Site Investigation, Soil Management, and Capping Plan – PAH Impacted Areas, St. Ann Center for Intergenerational Care, 2450 West North Avenue, Milwaukee, Wisconsin, DNR BRRTS Activity #02-41-56425, DNR FID #341265210

Developer: Same as above

3. Consultant Information

Stantec Consulting Services Inc.

12075 Corporate Parkway, Suite 200, Mequon, WI 53092

Contact: David Holmes, P.G., Senior Environmental Scientist

Phone: (262) 643-9177; Fax: (262) 241-4901

4. Site Information

Site Name: St. Ann Center for Intergenerational Care – Bucyrus Campus

Address: 2450 W. North Ave.

Location: City of Milwaukee, Milwaukee County, WI

SW ¼ of the SW ¼, Section 18, Township 7 North, Range 22 East

WTM

Coordinates:

X Coordinate (WTM91): 687420; Y Coordinate (WTM91): 289740

5. Regulatory Information

FID No.: 241654930 (previous)

341265210 (new)

BRRTS No.: 03-41-534478 (closed)

03-41-562862 (open)

02-41-564245 (open) BRRTS No. - Bureau of Remediation and Redevelopment Tracking System Number FID No. - Facility Identification Number WTM -Wisconsin Transverse Mercator The Site occupies 27 parcels of land as well as the vacated former right-of-ways for North 24th Place and two alleys and has a combined area of approximately 7.5 acres (Figure 1). The Site encompasses two city blocks and has a history of development dating back at least 125 years. By the time of the Sanborn fire insurance map dated 1894, the Site was already nearly fully developed with at least 40 residences or commercial buildings occupying what was then approximately 50 parcels. The parcels bordering North Avenue transitioned to commercial uses over the subsequent 50 to 60 years, with the former residences demolished, the basements filled in, and by 1951 the lots were occupied by several auto sales, repair, and service businesses. These businesses utilized a number of underground storage tanks (USTs) to store petroleum products.

Between 1951 and 1969, the buildings on at least half of the parcels were demolished as part of land assembly for the planned Park West Freeway, with the parcels acquired by the Milwaukee County Freeway Commission. Due to growing public opposition, plans for the freeway were put on hold in 1972, and formally cancelled in 1977. The vacated parcels were transferred initially to the City of Milwaukee, and



subsequently in 1981 to the Redevelopment Authority of the City of Milwaukee (RACM). Very few environmental records are available that are associated with the original acquisition of the parcels by the Freeway Commission. Demolitions occurring in the 1960s and early 1970s predated many environmental regulations pertaining to asbestos abatement or UST removal and closure. However, the Wisconsin Department of Commerce has listings for six USTs closed or removed from the Site between 1968 and 1974. These include five USTs located at 2416-28 W. North Ave. (300 gallon leaded gasoline UST closed/removed as of 12/31/1969; 2,000 gallon leaded gasoline UST closed/removed as of 12/31/1969; 1,111 gallon fuel oil UST abandoned without product as of 12/31/1974; 1,111 gallon “other” UST closed/removed as of 12/31/1974; and a 300 gallon leaded gasoline UST closed/removed as of 12/31/1969). For the address of 2480 W. North Ave., a 1,111 gallon “other” UST is listed as closed/removed as of 12/31/1974. Some demolition and abatement permit records are also available for the 22 parcels (representing approximately 27% of the site’s overall land area) on which structures were demolished by RACM during 1986-96.

Although several of former commercial parcels have documented or potential environmental concerns, significant environmental liabilities are present on many of the former residential properties as well, including the presence of undocumented fill materials, surface soil contaminated with lead-based paint eroded from residences, and surface soil contaminated with PAHs, lead, and potentially other contaminants from air pollution and other sources. It is unknown which liabilities are associated with historic residential use and which are associated with their more recent status as a planned freeway construction site or vacant industrial-zoned land. The property zoned for light industrial use (IL2) at the time of acquisition by St. Ann Center.

1.2 REGULATORY STATUS

There are currently two open and one closed Bureau of Remediation and Redevelopment Tracking System (BRRTS) numbers (Nos.) assigned to the Site. The closed BRRTS No. (03-41-524478) is for soil and groundwater contamination from releases of gasoline and other petroleum products in the southern portion of the Site. This release was reported in 1993, remediated, and then closed with residual contamination in 2007. BRRTS No. 03-41-562862 is for contamination detected in the southern portion of the property during initial construction of the St. Ann Center Bucyrus Campus, and consists of gasoline and volatile organic compound (VOC) impacts being addressed by The Sigma Group (Sigma). BRRTS No. 02-41-564245 is for contamination detected by Sigma in 2015, reported by Stantec, and being addressed by Stantec per the scope of work and activities summarized or proposed in this work plan.

1.3 PREVIOUS ENVIRONMENTAL ACTIVITIES OR STUDIES

1.3.1 Initial Environmental Assessment and Remediation Activities (1991-2007)

Information in this section was obtained primarily from a Phase I environmental site assessment (ESA) report prepared by Sigma in 2012 (Sigma, 2012). In 1991, the City of Milwaukee conducted a Phase I ESA on a two block area located on the north side of W. North Ave. between N. 24th St. and N. 26th St. (the eastern half of which is part of the St. Ann Center site; City of Milwaukee, 1991). In February 1993, STS Consultants conducted a Phase II ESA on behalf of the City that included a magnetometer survey,



excavation of test pits, and sampling of soil and/or groundwater from four borings/wells and 14 test pits. The Phase II ESA focused on the parcels located at 2416-28 and 2480 W. North Ave., where five USTs were closed/removed and one UST was abandoned in place (without product) between 1969 and 1974. The work by STS Consultants, Ltd. confirmed the presence of petroleum impacts at both parcels as well as the presence of up to 10 feet (ft) of historic fill materials composed of soil of undocumented origin.

The parcel with the five USTs (2416-28 W. North Ave.) is located at the southeast corner of the St. Ann Center site and is associated with WDNR BRRTS No. 03-41-524478. The parcel at 2480 W. North Ave. is located in the southwest quadrant and was assigned BRRTS No. 03-41-003632. No significant soil or groundwater impacts were identified at the 2480 W. North Ave. parcel, and it was closed by WDNR in December 1998. Significant impacts were documented at the 2416-28 W. North Ave. parcel in the vicinity of the former 300-gallon gasoline USTs, and in November 1998, 2,026 tons of petroleum impacted soil was excavated and landfilled from this area. Multiple rounds of post-remedial groundwater monitoring were completed during 1999 through 2006, which documented improvements in groundwater quality sufficient for case closure to be granted by WDNR in May 2007, following inclusion of the parcel on the WDNR geographic information system (GIS) registry of closed remediation sites having residual soil and groundwater impacts (WDNR, 2007).

1.3.2 Environmental Due Diligence Activities Completed by St. Ann Center (2012-14)

In August 2012, Sigma completed a Phase I ESA of the project site on behalf of St. Ann Center (Sigma, 2012). The Phase I ESA identified two historic recognized environmental conditions (HRECs) associated with the historic leaking UST releases. In August 2014, Sigma completed a Phase II ESA for the Site (Sigma, 2014). The scope of work included advancement of four GeoProbe® borings in locations of documented residual petroleum impacts, analysis of select soil samples for petroleum volatile organic compounds (PVOCs) plus naphthalene, and collection and analysis of soil gas samples from three of the locations for benzene, toluene, ethylbenzene, and xylenes. PVOCs were not detected, with the exception of naphthalene in one sample at a concentration below applicable soil cleanup standards. Several PVOCs were detected in the soil gas sample, but only at concentrations below the vapor to indoor air screening levels.

1.3.3 Environmental Assessment and Remediation Activities Completed during Phase I of Construction (2014-15)

Construction of the building began in September 2014. On October 21, 2014, a 1,000-gallon leaded gasoline UST was uncovered during excavation of footings in the southeast portion of the building. The UST was removed and six soil samples were collected from the UST basin, which confirmed a release had occurred. Additional investigation activities to define the extent of the soil impacts and over excavation of contaminated soil were performed on October 23 and November 26, 2014. Confirmation soil samples documented that petroleum-impacted soil had been removed; however, some soil with lead-concentrations exceeding cleanup levels remains in this area. In November 2014, the release was reported to WDNR. Subsequently, Sigma applied for and received confirmation of the eligibility of the gasoline UST for Petroleum Environmental Cleanup Fund Act (PECFA) Program funding. On January 28, 2015, an additional 550-gallon fuel oil UST was identified during excavation of the southwest foundation wall. The UST was



removed, soil was over excavated, and six confirmation soil samples were collected. The results indicate that the impacted soil was largely removed via the excavation; however, some impacted soil remained at the north end of the UST basin. Excavated soil from both UST excavations was temporarily stockpiled on-site and later transported off-site for disposal at Waste Management’s Orchard Ridge disposal facility. Sampling data collected by Sigma as part of this work is presented in Appendix A.

Separate from the UST impacts, contaminated soil and historic fill materials were encountered at multiple locations beneath the building, potentially associated in part with the former buildings that were demolished in the 1950s through 1960s as part of the planned freeway project. These materials were excavated and stockpiled in the northern portion of the Site. On April 23, 2015, Sigma collected and analyzed three samples of the stockpiled soil for PAHs and VOCs. On July 30, 2015, Sigma collected four additional sampled of in-situ soil from this area. VOCs were not detected, but between four and seven individual PAHs were detected in all samples at concentrations that exceeded soil cleanup standards (i.e, Chapter NR 720 Wis. Admin. Code non-industrial direct contact residual contaminant levels (RCLs). The data for the PAH impacted in-situ and stockpiled soil were formally reported to WDNR by Stantec on August 28, 2015, with a request for a separate BRRTS number to be assigned. The data for samples collected by Sigma in 2015 are included on Table 1 with the locations shown on Figure 2 and the laboratory analytical reports presented in Appendix A.

1.3.4 Environmental Assessment Activities Completed by Stantec (2015)

Additional soil samples were collected by Stantec from 10 locations on September 11, 2015. These included three samples (SS-8 to SS-10) collected in the west playground (Play Area 1), two samples (SS-2 and SS-3) collected in the north playground (Play Area 2), two samples (SS-1 and SS-7, respectively) collected in the west and east stormwater retention basins, and three samples (SS-4 to SS-6) collected from a large stockpile of topsoil that was reportedly stripped from the surface of the Site during the initial phases of construction. All samples were collected from within 0-0.5 ft of the ground surface or the surface of the stockpile. In the playground areas, approximately 12-inches of wood chips or sand were removed from the surface to expose the underlying native soil prior to collection of samples. The stormwater retention basins were dry at the time of sampling. All samples were analyzed for PAHs and lead. The purpose for the sampling was to document the presence/absence and degree of contamination within portions of the Site and materials subject to remedial activities included in a grant application submitted to Wisconsin Economic Development Corporation (WEDC) for a brownfields grant.

The Stantec sample locations are shown on Figure 2 and the data summarized on Table 1. The laboratory analytical report is presented in Appendix B. Soil or fill materials in all samples contained one or more PAHs at concentrations exceeding the non-industrial direct contact RCLs. In the samples collected from the two stormwater basins, the only constituent with concentrations exceeding the non-industrial direct contact RCLs was benzo(a)pyrene. The measured concentrations of 0.0308 and 0.033 micrograms per kilogram (µg/kg) were slightly more than double the RCL of 0.015 µg/kg. In other samples, significantly greater PAH concentrations were measured, including up to six PAHs (benzo(a)anthracene, benzo(a)pyrene, benzo(b)fluoranthene, benzo(k)fluoranthene, dibenz(a,h)anthracene, and indeno(1,2,3-cd)pyrene) for which concentrations exceeded the non-industrial direct contact RCLs. Significant PAH impacts were



documented in all three samples of stockpiled top soil, with the concentration of benzo(a)pyrene exceeding the non-industrial direct contact RCL by factors of 56, 227, and 240 times. In the middle playground area, benzo(a)pyrene concentrations exceeded the non-industrial direct contact RCL by factors of 31, 43, and 54 times. In the north playground area, benzo(a)pyrene concentrations exceeded the non-industrial direct contact RCL by factors of 80 and 1,040 times.

Lead was detected in all samples, but only at concentrations well below the non-industrial direct contact RCL of 400 milligrams per kilogram (mg/kg).

Upon receipt of sample results by Stantec, St. Ann Center representatives were notified and use of the playground areas restricted as a safety precaution until corrective measures can be implemented. The playground areas are presented fully covered by approximately a one foot thick layer of imported clean wood chips or clean play sand. However, use of the sand box was suspended, and use of the remaining areas continues only with children under the direct supervision by St. Ann Center staff, making certain that no play activities take place that might significantly disturb the existing temporary layer of imported clean materials. This is an interim measure until a permanent protective cap can be installed. The grant application currently under review by WEDC is requesting funding to help pay for remedial activities to address the playground areas as well as the soil stockpiles.

1.4 SITE DEVELOPMENT ACTIVITIES (2014-16)

The project includes the transformation of a vacant 7.5-acre brownfield site into an 88,000 square foot (ft2) intergenerational care facility located in an inner city neighborhood in the City of Milwaukee. Purchase of the parcel by the St. Ann Center from RACM was completed under a development agreement executed on October 6, 2014. Redevelopment of the Site is occurring in two phases. Groundbreaking and the start of construction for Phase I of the project took place on October 18, 2014. Phase I is nearing completion and includes: (a) construction of the shell of the 88,000 ft2 building, (b) completion of the interior build out for approximately 50,000-ft2 of space, and (c) completion of interior roads, parking lots, and landscaping for the middle and southern portions of the Property.

Phase II of the project consists of: (a) the build out of the remaining 38,000 ft2 of interior space, (b) grading and capping of contaminated soil stockpiled on the northern portion of the property, (c) landscaping of the northern portion of the property, and (d) construction of outdoor recreational facilities to include a 500-seat band shell, playground areas, and an outdoor pool.

A detailed timeline for environmental and redevelopment activities is provided in Section 4.0.

1.5 NATURE AND EXTENT OF ENVIRONMENTAL IMPACTS

Residual petroleum and lead impacts associated with former petroleum storage tanks are present in the southern portion of the Property. Please note that the current site is composed of 27 parcels as well as the vacated right-of-ways for several streets and alleys, and covers two city blocks. The petroleum impacted areas are being assessed and addressed by a separate consultant (Sigma). Recent data collected by Sigma for these areas are provided in Appendix A.



Impacts in the northern portion of the property are the focus of this work plan. Contamination is present within five general areas:

(a) a large stockpile of soil excavated during construction of foundations for the building (representative samples = SAE-1, SAE-4, and SAE-10),

(b) a smaller stockpile of topsoil scrapped from the surface of the property at the beginning of construction (representative samples = SS-4, SS-5, and SS-6),

(c) contamination within in-situ soil or fill materials present in the northern portion of the facility (representative samples = Grab 1 to 4),

(d) contamination present within in-situ soils in a playground area (Play Area 1) on the west side of the building (representative samples = SS-8, SS-9, and SS-10), and

(e) contamination present within in-situ soils in a playground area (Play Area 2) on the north side of the building (representative samples = SS-2 and SS-3).

Soil chemistry data for each area (PAH data for all samples, lead data for samples SS-1 through SS-10) are summarized on Table 1 with the locations shown on Figure 2. All areas contain concentrations of one or more PAHs at concentrations that significantly exceed non-industrial direct contact RCLs.

Contamination was also present in the two soil samples collected at the center of the stormwater ponds, with the concentration of benzo(a)pyrene exceeding the non-industrial direct contact RCL. However, the cumulative direct contact risk value is not exceeded. No action is proposed for these two areas at this time due to the relatively low levels present, and the understanding that WDNR is in the process for developing updated background threshold values that could be applicable to soil at this and other urban locations subject to high background levels of PAHs.

2.0 INVESTIGATION WORK PLAN

2.1 PROPOSED FIELD SAMPLING PROGRAM METHODOLOGY

Nine general types of investigative activities are proposed, as detailed in this section. The project will be managed out of the Stantec Mequon office. A Stantec licensed professional geologist and a WDNR-qualified hydrogeologist will supervise project activities, including report preparation. The work will be performed in general accordance with WDNR guidance and regulations. A site-specific health and safety plan will be prepared prior to field activities.

2.1.1 Soil Sampling

Soil sampling will be performed using a GeoProbe®. Samples will be collected continuously from each borehole. Field screening of samples for VOCs will be performed as described in Section 2.1.2 below.



Stratigraphic borehole logs will be prepared by Stantec personnel in general conformance with the American Society for Testing and Materials (ASTM) Method D-2488-00 (ASTM, 2000).

Sampling will be conducted to further assess the nature and extent of PAH impacts in the northern portion of the Site. The purpose for the sampling is to facilitate actions needed to appropriately cap the significant stockpiles of impacted material as well as to address the two playground areas. The source for the contamination is unknown but there appears to be no relation to petroleum impacts documented in the southern portion of the property and associated with releases of petroleum products from USTs. It is suspected that a portion of PAH contamination is attributable to long-term atmospheric deposition of PAHs from various air pollution sources, in particular during the 80 to 90 year development period pre-dating air pollution regulations. Some contamination may be attributable to undocumented historic fill materials, in particular at locations where the basements of former structure may have been filled in following large scale demolition of structures performed in the 1960s through 1990s, which entirely cleared the site of structures and converted use of the site from commercial and residential to vacant freeway land and vacant light industrial property.

Sampling will focus in part on assessing the degree and vertical extent of impacts in three different geographic settings: (a) former residential yards, (b) former residential building locations where fill materials were potentially used to fill basements, and (c) former street right-of-ways. Two borings will be completed in each geographic setting. Borings will be sampled to depths of approximately 10 ft below ground surface (bgs), but extend deeper if there is evidence of fill materials at depth, so that all borings extend if feasible to native soil. Samples from four depth intervals in each boring will be submitted for laboratory analysis: 0.0-0.5 ft bgs, 3.0-3.5 ft bgs, 6.5-7.0 ft bgs, and 10.0-10.5 ft bgs (or within the interval corresponding to the upper 0.5 ft of native soil, if present at depths below 7 ft bgs. Four samples per boring (24 samples total) will be analyzed for lead and PAHs. It is anticipated that the sample data will help identify the source and general distribution of PAH impacts beneath the Site, recognizing that the detailed pattern is complex on a Site that historically contained up to 50 different commercial or residential structures/properties.

In order to document that the cap extends beyond the limits of the PAH-impacted areas, up to 12 additional samples will be collected from locations staggered around the planned perimeter of the graded stockpile area. Each boring will be sampled a to depth of 4 ft, with samples from two depth intervals (0.0-0.5 ft bgs and 3.0-3.5 ft bgs) submitted for laboratory analysis of PAHs and lead. It is possible that the extent of impacts will not be fully defined by the proposed sampling, in which case, additional sampling may be necessary at future date. The sampling is intended to support the immediate needs to address the exposed soil stockpiles, as well as the playground areas, for a site that is now occupied and in active use on a daily basis by several hundred area residents (including children) and employees.

The exact sample locations have not been finalized, but will be submitted to WDNR for review and comment prior to performing the sampling.



2.1.2 Field Screening of Soil Samples

It is anticipated that soil samples from all borings will be field screened for the presence of VOCs using a hand held photoionization detector (PID). Stantec’s standard operating procedure (SOP) for field PID screening is presented in Appendix C. Field screening of soil samples with the PID will be performed on approximately every two-foot depth interval.

2.1.3 Well Installation, Development, and Collection of Groundwater Samples

Temporary 2-inch diameter polyvinyl chloride (PVC) wells will be installed at two (2) of the proposed soil boring locations. The anticipated depth for all wells is 15 ft bgs. The wells will be constructed in general conformance with Chapter NR 141, Wis. Adm. Code, except that the diameter of the soil borings may be 4 inches instead or 6 inches or greater. The wells will be used to document the depth to groundwater in the area of PAH impacts, and also to assess whether groundwater has been impacted by overlying soil containing one or more PAHs and lead at concentrations that exceed the applicable groundwater protection RCLs.

During drilling of borings for monitoring wells, soil samples will be collected at two ft intervals from each borehole using standard split-barrel sampling techniques (per ASTM Method D1586-11; ASTM, 2011).

The monitoring wells will be developed and purged before sampling to help ensure that water entering the well is representative of ambient ground-water quality. All well development and sampling equipment will be thoroughly cleaned between boreholes.

After well development and purging, the wells will be sampled in accordance with WDNR ground-water sampling procedures in WDNR Publication DG-038-96 (WDNR, 1996).

2.1.4 Hydraulic Conductivity Testing

Hydraulic conductivity testing will be performed on both wells to document the permeability of the saturated soil layers underlying the Site. Based on the soil lithology observed during investigation conducted in the southern portion of the Site, it is anticipated that relatively low-permeability soil and fill materials will have relatively low permeability and that testing can therefore be effectively performed using bail-down tests. The pre-test water level will be measured and noted. The same measuring reference point at the top of each well will be used for measurement conducted during each test. Each well will then be bailed down for 5 minutes or until “dry” (whichever occurs first). The exact time (minute and second) at which bailing stops will be noted, and water levels measured beginning as soon as possible after the end of bailing using an electric water level tape. The water level will be measured periodically as the water level recovers back to equilibrium (which based on previous testing at the site, will likely require several hours for each well). Measurements will be recorded if possible until the water level recovers at least 75% to the pre-test static water level. It is anticipated that testing can be performed on a staggered but simultaneous basis on multiple wells to maximize efficiency of field work.



The data will be evaluated and used to calculate hydraulic conductivities using the Method of Bouwer and Rice (Bouwer and Rice, 1976; Bouwer, 1989) in combination with computer software such as Aqtesolv™.

2.1.5 Surveying and Measurement of Water Levels

The locations, stick up, and ground surface elevations of all borings, and wells, will be surveyed per Chapter NR141 Wis. Adm. Code requirements to determine the elevations in ft above mean sea level (amsl) according to the National Geodetic Vertical Datum of 1929 (which was used for the recent survey completed for the Site as part of redevelopment planning). The top of casing elevations will also be surveyed for each monitoring well. The horizontal locations will also be surveyed per WTM coordinates. At least two complete sets of water level measurements will be made that include the new wells and staff gages as well as previous wells installed as part of the Phase II ESA completed by Stantec. The water levels and survey data will be used to determine groundwater elevations at each well and surface water elevations at each staff gage, which in turn will be used to document the overall water table surface and groundwater flow directions at the Site.

2.1.6 Management of Investigative Wastes

Soil cuttings produced during drilling and sampling of boreholes will be placed on the stockpile of contaminated soil to be capped. Ground water produced from each well will be stored on site in a secure location 5-gallon buckets. Appropriate disposal of the ground water will be determined after receipt of laboratory analyses.

2.1.7 Borehole Abandonment

As required by state law (s. NR 141.25, Wis. Adm. Code), the boreholes will be decommissioned by filling with bentonite when the drilling and sampling are complete.

2.2 PROPOSED LABORATORY ANALYSIS PROGRAM

All soil and groundwater samples will be analyzed by a Wisconsin-certified analytical laboratory. Sample containers, preservation, analytical methods, and holding times are summarized on Table 2. Quality assurance and quality control (QA/QC) samples that will be collected as part of the field investigation and laboratory analysis program are summarized in Table 3.

2.3 DATA EVALUATION AND REPORTING

Stantec will prepare the following materials to document the field investigation and data collection activities:

Soil boring logs

Soil boring abandonment forms

Well completion and development logs

Hydraulic conductivity test data



Survey and water level measurement data

As the site has been previously investigated and subject to closure under NR700 Wis. Adm. Code Rule Series, it is anticipated that the data will be summarized and presented to WDNR as part of documentation submitted in support of case closure. The data will be incorporated into the following components of the closure submittal:

Updated soil/sediment chemistry data table that adds results for new samples to the existing table summarizing previous analytical results for soil

Updated groundwater chemistry data table that adds results for new samples to the existing table summarizing previous analytical results for groundwater

Groundwater elevation and well completion summary table

Water table map

Boring location map

Map depicting locations of soil samples with concentrations that exceed cleanup standards/guidance, and overall extent of exceedances.

Map depicting locations of groundwater samples, if any, with concentrations that exceed NR140 Wis. Adm. Code groundwater standards and overall extent of exceedances.

Isoconcentration contour maps, as appropriate, for individual contaminants for which detailed planning will be required as part of remedial action planning (none are anticipated).

Site geologic cross sections, if warranted.

3.0 SOIL CAPPING AND MANAGEMENT PLAN

A soil capping and management plan is presented herein to address impacted soil currently stockpiled on site as well as impacted documented within two playground areas. Capping will be completed in designated areas in accordance with RR-709 (WDNR, 2013). The anticipated approximate limits for the three areas to be capped are shown on Figure 2.

Please note that there is no basis for anticipating or addressing vapor migration issues in the PAH impact area. There are no known petroleum sources, and no petroleum odors or elevated PID readings observed in the focus areas for this work plan. Although there are petroleum impacts on other parcels at the Site, these areas were reportedly evaluated by Sigma as part of their Phase II ESA completed in 2014, and no significant vapor levels reportedly were found that would require vapor mitigation measures during construction. Sigma is responsible for evaluating impacts from the two new USTs that were removed during construction, but the extent of petroleum impacts in soil in these areas was reportedly limited and fully delineated by Sigma, and separated by 100 to 500 feet PAH impact areas evaluated by Stantec.



3.1 NR 718.12 EXEMPTION REQUEST

The proposed placement location for the PAH-contaminated soil is depicted on Figure 2. 718.12(1)(c) Wis. Admin. Code lists criteria that require a written exemption from the WDNR. Applying these criteria, the following is known about the St. Ann Center property:

The Site is not in a floodplain

The Site is not within 100 ft of any wetland or critical habitat.

There are no on-site water supply wells and the Site is not within 300 ft of any known water supply well.

Excavated soil will not be placed at a depth greater than the depth of the original excavation.

The soil management area is not within 300 ft of any navigable river, stream, lake, pond, or flowage.

The soil stockpiles and in-place soil remaining in the vicinity of the stockpile as well as the two playground areas contains PAHs at concentrations above applicable ch. NR 720 Wis. Admin. Code protection of groundwater and/or direct contact RCLs. Therefore, the soil contamination poses a threat to public health and the environment and does not meet the requirement of NR 718.12 (1)(c)7. However, it is proposed to construct caps across these areas to protect public health and the environment using WDNR RR-709 “Guidance for Cover Systems as Soil Performance Standard Remedies” (WDNR, 2013). Stantec requests an exemption be extended for the proposed soil management plan. The following information is provided in support of the exemption per NR 718.12 (1)(d).

Source Soil

The source of clean soil and top soil to be used to construct the cap has not been identified, in part due to an effort to secure donation of this material. Once the source site is identified, Stantec will review environmental records (if any) for the site as well as historic land uses to determine constituents for analysis to confirm the “clean” status of the material. It is anticipated that the soil at a minimum will be sampled and analyzed for PAHs and Resource Conservation and Recovery Act metals (i.e., arsenic, barium, cadmium, chromium, lead, mercury, selenium, and silver) to confirm that these materials are non-impacted and appropriate for use in constructing the cap.

Soil Characteristics

Historic characterization data for the in situ soil in the placement area is included with this work plan. Additional sampling will be conducted both to further characterize the potential sources and vertical occurrence of PAH impacts, as well as to document the lateral extent of impacts, in particular at the margins of the proposed soil cap limits.



Unavailability of Environmentally Suitable Alternatives

The Site is located in an urban neighborhood with more than 125 years of residential and commercial use, and subject to significant background levels of contamination from lead, PAHs, and other contaminants. The development is located in one of the most economically distressed neighborhoods in the State of Wisconsin, and was funded primarily by private donations. A majority of the Site has been vacant for 40 to 50 years, with contaminated soil exposed at the ground surface. There is no economically viable environmentally suitable alternative to addressing the widespread surface soil impacts through consolidation and capping on-site.

Compliance with Other State and Federal Regulations

Soil management in the area will be in compliance with other state and federal regulations. The soil will not be transported on or across any roadways. The entire area is being managed as a construction site with proper stormwater and erosion control, and the soil will be managed and capped in a manner designed to be protective of human health and the environment.

As-built documentation will be submitted to the WDNR after completion of grading activities. Stantec will prepare a report that documents soil management and construction activities associated with this project. The report will include sufficient text, tables and figures to meet WDNR reporting requirements.

The following sequence of events will take place as part of capping of the stockpile areas:

St. Ann Center will wait for formal notification of award from WEDC (anticipated by late-October 2015), so that costs for additional engineering activities will be eligible for either reimbursement or to count as required matching funds.

Following formal notification of award (or non-award), Stantec will proceed with the proposed additional sampling activities.

Based on the sample results, the plans for grading and capping will be adjusted if necessary to fully encompass the limits of soil having PAH-impacts that exceed the non-industrial direct contact RCLs.

Sources of clean soil and top soil to be used as part of the cap will be identified, and sampling conducted as appropriate to confirm that the soil is not impacted.

Updated bids/cost estimates will be obtained from contractors based on the final grading/capping plans.

Construction of the cap will proceed upon securing funding necessary to pay for this work. In the event that sufficient funding will not be available until 2016, the exposed contaminated materials will be covered with hay, mulch, or other clean materials to reduce exposure to wind and precipitation



over winter months. Fencing will be used to limit access to the area from visitor’s to the center (fencing is already in place around the perimeter of the area bordering the sidewalks).

When sufficient funding (grant, donation or other) is secured, work will proceed with grading of the stockpiles in accordance with final grading plans approved by the City. It is anticipated that maximum slopes will equal approximately a 1:8 grade, as shown on Figure 2.

A cap will be constructed over the contaminated soil consisting of a geofabric layer (either Geotex® 401 or Mirafi® 500X; Appendix D), overlain by 14-inches of clean soil from a documented clean source, overlain by 4-inches of top soil from a documented clean source.

The cap will be seeded and mulched and the grass watered, cut, and maintained until well established.

A construction documentation report will be prepared for submittal as part of the closure documentation, as well as a cap maintenance plan.

Capping of the playground areas will follow a similar sequence, except that work may proceed this fall regardless of whether or not funding is awarded from WEDC. The layer of wood chips will be carefully removed from the playground areas. The lower one to two inches of wood chips will be inspected to evaluate whether contaminated soil has become mixed with the chips. This material will be separately stockpiled, and sampled for PAHs. Following removal of the wood chip layer, approximately 0.5 ft of contaminated soil will be removed from throughout the playground areas, and deposited on and consolidated with the main stockpile of contaminated soil. A geofabric layer will be placed throughout the playground areas, and covered by a 0.5 ft. layer of ¾-inch traffic bond crushed limestone, which will then be rolled and compacted. A one foot layer of wood chips will then be placed on top of the rock layer.

4.0 SCHEDULE

Following approval of the work plan (including any necessary amendments), it is anticipated that the proposed field and laboratory investigations will be completed within approximately four to five weeks. Preparation and submittal of the Site Investigation Report will require approximately two to three additional weeks.

The work associated with the PECFA eligible UST is being performed by a separate environmental consultant (Sigma) under a separate BRRTS No. The schedule for activities related to PECFA-eligible contamination is provided for informational purposes only. Timeline for Scheduled Remediation Activities (PAH Impacts and Fuel Oil Impacts)

Date Activity 4/23/2015 Soil samples collected by Sigma from stockpile – PAH impacts documented.

7/30/2015 Soil samples collected by Sigma from surface soil in vicinity of stockpile – PAH impacts documented.



8/28/2015 Release notification provided to WDNR by Stantec. 8/31-9/4/2015 Prepare and submit add’l sampling/soil management/capping plan to WDNR. 9/7-9/11/2015 Perform add’l sampling in select areas.

10/15-11/1/2015 Perform soil excavation, disposal, grading, and capping activities. 11/1-11/30/2015 Complete add’l delineation sampling in PAH impact area (if required by WDNR) 12/1-12/31/2015 Complete remedial documentation report and request for case closure

Starting 2017 Annual cap inspections and reporting

Timeline for Scheduled Remediation Activities (PECFA–Eligible Gasoline Impacts)

Date Activity

10/21-23/2014 1,000-gal leaded gasoline UST discovered and removed. Limited excavation of impacted soil completed and soil samples collected.

11/11/2014 GeoProbe® sampling performed to delineate impacts. 11/14/2014 WDNR notified of release. 11/26/2014 Add’l impacted soil excavated and landfilled. Confirmation samples collected. Sep. 2015 Additional investigation activities to be performed.

Oct. 2015 to June 2016

Additional rounds of groundwater monitoring to be performed (if required).

July 2016 Prepare and submit remedial documentation report, case closure request and GIS registry (if applicable)

Starting 2017 Annual cap inspections and reporting (if applicable)

5.0 LIMITATIONS

The additional sampling by Stantec was performed and the work plan prepared in accordance with generally accepted practices for the environmental consulting profession, undertaking similar studies at the same time and in the same geographical area as the work conducted by Stantec. Stantec observed the degree of care and skill that are generally exercised by the profession under similar circumstances and conditions. No other warranty is expressed or implied.

Stantec’s observations, findings, and opinions should not be considered as scientific certainties, but only as opinion based upon our professional judgment concerning the significance of the data gathered during the course of this investigation and the completed remedial action. Specifically, Stantec cannot represent that the Property does not contain any hazardous or toxic materials or other latent conditions beyond that observed by Stantec during the course of the investigation. Additionally, due to limitations of the remediation process and the necessary use of data furnished by others, Stantec and its subcontractors cannot assume liability if actual conditions differ from the information presented in this report.



6.0 PROFESSIONAL CERTIFICATION

I, Hiedi A. Waller, hereby certify that I am a registered professional engineer in the State of Wisconsin, registered in accordance with the requirements of ch. A-E8, Wis. Adm. Code; that this document has been prepared in accordance with the Rules of Professional Conduct in ch. A-E8, Wis. Adm. Code; and that to the best of my knowledge, all information contained in this document is correct and the document was prepared in compliance with all applicable requirements in chs. NR700 to 726, Wis. Adm. Code.

October 9, 2015 Hiedi A. Waller, P.E., E-33741

If you have any questions or concerns regarding the plans or information described herein, please contact me at your earliest convenience.

David B. Holmes, P.G. No. 887 Senior Geologist Phone: (262) 643-9177 ext. 6177 Fax: (262) 241-4901 [email protected]

Technical Reviewer Independent Reviewer

Hiedi A. Waller, P.E. Senior Environmental Engineer

Richard J. Binder, P.G., CPG Associate

Cc: Nick Schultz, St. Ann Center



Attachments References Tables 1. Soil Chemistry Data

2. Analytical Methods, Sample Containers, Preservation and Holding Time Requirements 3. Field and Lab QA/QC Requirements

Figures 1. Property Location and Local Topography 2. Site Layout, Sample Locations (2015), and Proposed Engineered Cap Limits

Appendices A. Recent Site Environmental Data (The Sigma Group, 2014-15) B. Laboratory Analytical Report and Chain of Custody Documentation (Stantec, 2015) C. Stantec Standard Operating Procedures D. Geofabric Technical Specifications E. Landscape Plan

Site Investigation, Soil Management, and Capping Plan – PAH Impacted Areas, St. Ann Center for Intergenerational Care, 2450 West North Avenue, Milwaukee, Wisconsin, DNR BRRTS Activity #02-41-56425, DNR FID #341265210

REFERENCES

ASTM Standard D2488-09a, 2009, "Standard Practice for Description and Identification of Soils (Visual-Manual Procedure," ASTM International, West Conshohocken, PA, 2009, DOI: 10.1520/D2488-09A, www.astm.org.

ASTM Standard D1586-11, 2011, "Standard Test Method for Standard Penetration Test (SPT) and Split-Barrel Sampling of Soils," ASTM International, West Conshohocken, PA, 2011, DOI: 10.1520/D1586-11, www.astm.org.

Bouwer, H., 1989. The Bouwer and Rice slug test--an update, Ground Water, vol. 27, no. 3, pp. 304-309.

Bouwer, H. and R.C. Rice, 1976. A slug test method for determining hydraulic conductivity of unconfined aquifers with completely or partially penetrating wells, Water Resources Research, vol. 12, no. 3, pp. 423-428.

City of Milwaukee, Department of City Development, 2012 (May 30), Historical Land Use Investigation of Park West “D” Milwaukee, Wisconsin, File 325-32, signed by Karen Dettmer and Megan Bender.

The Sigma Group, 2012 (August), AAI Phase I Environmental Site Assessment, Park West “D” Redevelopment. North 24th Street and West North Avenue, Milwaukee, Wisconsin. Prepared for Sr. Edna Lonergan.

The Sigma Group, 2014 (August 6), Phase II Environmental Site Assessment, Park West “D” Redevelopment, North 24th Street/West North Avenue, Milwaukee, Wisconsin, Project Reference #14643.

WDNR, 1996, Groundwater Sampling Field Manual. Steve Karklins (author) and Jordana Lenon (editor), Bureau of Drinking Water and Groundwater, Wisconsin Department of Natural Resources. PUBL-DG-038 96. September. Available at: http://www.dnr.state.wi.us/org/aw/rr/archives/pubs/DG038.pdf.

WDNR, 2007 (May 9), Letter from James Schmidt (WDNR) to Benji Timm (RACM) regarding “Final Case Closure for Vacant Lot “C”, 2416 West North Avenue, Milwaukee, WI, FID 241654930, BRRTS 03-41-524478, PECFA 53208-4105-00.

WDNR, 2013 (October), Guidance for Cover Systems as Soil Performance Standard Remedies, WDNR Publication RR-709.

WDNR, 2014 (November 19), Letter from Victoria Stovall (WDNR) to Sr. Edna Lonergan (St. Ann Center) regarding “Reported Contamination at St. Ann Center for Intergenerational Care, 2416 W North Ave., Milwaukee, WI, DNR BRRTS Activity # 03-41-562862, DNR FID # 341251900.”

WDNR, 2015 (August 28), Letter from Victoria Stovall (WDNR) to Sr. Edna Lonergan (St. Ann Center) regarding “Reported Contamination at St. Ann Center for Intergenerational Care, 2450 W North Ave., Milwaukee, WI, DNR BRRTS Activity # 02-41-564245, DNR FID # 341265210.”


TABLES

TABLE 1 - SOIL CHEMISTRY DATA FOR SAMPLES COLLECTED IN THE SOIL STOCKPILE AREAST. ANN CENTER BUCYRUS CAMPUS

2450 W. NORTH AVENUE, MILWAUKEE, WI

Sample Location, Sample No., Date Collected, Depth (ft. bgs), and PID Readings (ppm)

N. Center Center S. Center NW S. Center NE West East West W. Center E. Center East West East West Center EastSAE-1 SAE-4 SAE-10 SS-4 SS-5 SS-6 SS-1 SS-7 Grab 1 Grab 2 Grab 3 Grab 4 SS-2 SS-3 SS-10 SS-9 SS-84/23/15 4/23/15 4/23/15 9/11/15 9/11/15 9/11/15 9/11/15 9/11/15 7/30/15 7/30/15 7/30/15 7/30/15 9/11/15 9/11/15 9/11/15 9/11/15 9/11/15

grab grab grab grab grab grab 0-0.5 0-0.5 1' 1' 1' 1' 0-0.5 0-0.5 0-0.5 0-0.5 0-0.5

1.1 0.3 0.6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0Metals Lead 27 400 800 mg/kg NA NA NA 112 106 114 18.1 11.9 NA NA NA NA 218 118 120 37.4 96.8

Acenaphthene NS 3,440 33,000 mg/kg 0.032 J 0.26 0.33 0.044 J 0.73 0.196 <0.0201 <0.0201 <0.0201 <0.0201 0.5 2.48 2.89 0.08 0.039 J 0.147 0.048 JAcenaphthylene NS NS NS mg/kg 0.0285 J 0.034 J 0.045 J 0.0301 J <0.099 0.111 <0.0198 <0.0198 <0.0198 <0.0198 0.065 0.32 J 0.205 J 0.035 J 0.0313 J <0.0198 0.0269 JAnthracene 197.7 17,200 100,000 mg/kg 0.136 0.82 1.09 0.183 2.26 0.75 0.0205 J <0.0171 0.11 0.052 J 1.81 8.5 8.5 0.36 0.087 0.49 0.153Benzo(a)anthracene NS 0.148 2.11 mg/kg 0.52 1.62 2.02 0.74 4.3 2.96 0.041 J 0.034 J 0.41 0.176 2.86 10.7 16.4 1.21 0.36 0.87 0.59Benzo(a)pyrene 0.470 0.015 0.211 mg/kg 0.55 1.59 1.81 0.84 3.6 3.4 0.0308 J 0.033 J 0.41 0.187 2.62 9.4 15.6 1.21 0.46 0.81 0.64Benzo(b)fluoranthene 0.479 0.148 2.11 mg/kg 0.86 2.09 2.4 1.32 5.6 5.3 0.059 J 0.068 0.61 0.284 3.4 12.5 22.9 1.88 0.74 1.25 1.03Benzo(g,h,i)perylene NS NS NS mg/kg 0.53 1.1 1.14 0.63 2.16 2.36 0.235 J 0.0292 J 0.32 0.147 1.63 5.7 10 0.78 0.42 0.49 0.46Benzo(k)fluoranthene NS 1.48 21.1 mg/kg 0.264 0.7 0.77 0.5 2.03 2.33 0.047 J 0.0299 J 0.273 0.112 1.81 5.9 8.8 0.69 0.253 0.53 0.44Chrysene 0.145 14.8 211 mg/kg 0.54 1.4 1.79 0.68 3.7 2.66 0.036 J 0.0303 J 0.46 0.207 2.55 9.5 13.6 1.03 0.36 0.75 0.55Dibenz(a,h)anthracene NS 0.015 0.211 mg/kg 0.096 0.249 0.299 0.12 0.45 0.55 <0.015 <0.015 0.051 J 0.0245 J 0.36 1.15 2.33 0.185 0.067 0.106 0.085Fluoranthene 88.9 2,290 22,000 mg/kg 1.23 3.7 4.7 1.5 10.2 5.5 0.074 0.043 J 0.89 0.37 5.7 23.4 32 2.25 0.72 1.88 1.17Fluorene 14.8 2,290 22,000 mg/kg 0.036 J 0.37 0.45 0.042 J 1.11 0.208 <0.0184 <0.0184 <0.0184 <0.0184 0.72 3.8 2.62 0.093 0.0269 J 0.246 0.042 JIndeno(1,2,3-cd)pyrene NS 0.148 2.11 mg/kg 0.43 0.98 1.07 0.54 1.97 2.14 <0.0165 0.0238 J <0.282 0.123 1.48 5.1 9.0 0.69 0.303 0.45 0.411-Methylnaphthalene NS 15.6 53.1 mg/kg <0.0205 0.056 J 0.047 J <0.0205 0.178 J 0.0298 J <0.0205 <0.0205 <0.0205 <0.0205 0.054 J 0.58 J 0.71 <0.0205 <0.0205 0.0265 J <0.02052-Methylnaphthalene NS 229 2,200 mg/kg <0.0199 0.073 0.055 J <0.0199 0.15 J 0.0213 J <0.0199 <0.0199 <0.0199 <0.0199 0.038 J 0.52 J 0.61 J <0.0199 <0.0199 0.0241 J <0.0199Naphthalene 0.658 5.15 26 mg/kg <0.0203 0.132 0.069 <0.0203 0.234 J 0.022 J <0.0203 <0.0203 <0.0203 <0.0203 0.042 J 0.95 0.68 <0.0203 <0.0203 <0.0203 <0.0203Phenanthrene NS NS NS mg/kg 0.46 2.26 2.78 0.56 8.9 2.34 0.061 J <0.0198 0.31 0.132 3.2 17.2 29.2 0.98 0.315 1.36 0.50Pyrene 54.1 1,720 16,500 mg/kg 1.08 3.15 3.8 1.29 8.2 4.7 0.058 J 0.034 J 0.75 0.33 4.5 18.3 27.8 1.91 0.62 1.5 1.02Benzene 0.00510 1.49 7.41 mg/kg <0.016 <0.016 <0.016 NA NA NA NA NA NA NA NA NA NA NA NA NA NAEthylbenzene 1.57 7.47 37 mg/kg <0.027 <0.027 <0.027 NA NA NA NA NA NA NA NA NA NA NA NA NA NAMethyl-tert-butyl-ether 0.0270 59.4 293 mg/kg <0.025 <0.025 <0.025 NA NA NA NA NA NA NA NA NA NA NA NA NA NANaphthalene 0.658 5.15 26 mg/kg <0.087 <0.087 <0.087 NA NA NA NA NA NA NA NA NA NA NA NA NA NAToluene 1.107 818 818 mg/kg <0.031 <0.031 <0.031 NA NA NA NA NA NA NA NA NA NA NA NA NA NA1,2,4-Trimethylbenzene 89.8 219 mg/kg <0.078 <0.078 <0.078 NA NA NA NA NA NA NA NA NA NA NA NA NA NA1,3,5-Trimethylbenzene 182 182 mg/kg <0.089 <0.089 <0.089 NA NA NA NA NA NA NA NA NA NA NA NA NA NAXylenes (total) 3.94 258 258 mg/kg <0.099 <0.099 <0.099 NA NA NA NA NA NA NA NA NA NA NA NA NA NA

Yes Yes Yes Yes Yes Yes No No Yes Yes Yes Yes Yes Yes Yes Yes YesNotes:1. Samples dated 4/23/15 and 7/30/15 were collected by The Sigma Group. Samples collected on 9/11/15 were collected by Stantec Consulting Services, Inc.2. Samples were analyzed for the full VOC list, with none detected. Only data for select petroleum VOCs are shown on this table.

xxx = Concentration exceeds Groundwater Pathway RCL (unsaturated soil samples only)xxx = Concentration exceeds Non-Industrial Direct Contact RCL (unsaturated soil samples only)

xxx = Concentration exceeds Industrial Direct Contact RCL (unsaturated soil samples only)

ft. bgs = feet below ground surface PAH = polynuclear aromatic hydrocarbonJ = designates analytes detected at concentrations between the Limit of Detection and Limit of Quantitation PID = photoionization detectormg/kg = milligrams per kilogram ppm = parts per millionNA = not analyzed RCL = residual contaminant levelNS = no standard established VOC = volatile organic compound

Stormwater Ponds

Cumulative Direct Contact RCL Risk Exceeded (Yes/No)?

VOCs (2)

Play Area 1 (West)Ex-Situ Soil In-Situ Soil

3. All soil samples collected by The Sigma Group were reported to have been collected from unsaturated soil or stockpiled soil above the water table. Unsaturated versus satured soil conditions reportedly were determined by The Sigma Group based on: (a) measured water levels in adjacent/nearby monitoring wells, (b) soil moisture conditions recorded on soil boring logs, and/or (c) soil moisture contents reported on laboratory analytical reports.4. RCLs were calculated using the WDNR RCL Spreadsheet (dated January 2015) available on-line at http://dnr.wi.gov/topic/brownfields/professionals.html.

Group

PAHs

Contaminated Soil Stockpile Stockpile Vicinity

1.382

Units of Measure

Industrial Direct Contact

RCLs (4)

Non-Industrial Direct

Contact RCLs (4)

Ground-water Pathway

RCLs (4)Constituent

Top Soil Stockpile Play Area 2 (North)

Site Investigation Work Plan St. Ann Center – Bucyrus Campus

Table 2 Analytical Methods, Sample

Containers, Preservation and Holding Time Requirements

Page 1 of 1

October 8, 2015

Matrix Analysis Container Preservation Holding Time

SOIL

RCRA Metals (6010B); except Hg (7470) 4 oz glass/plastic jar Cool to 2 - 6° C 6 months; except Hg (28

days)

PAHs (8270B) 4 oz amber glass jar Cool to 2 - 6° C 14 days for extraction; 40 days for analysis

% Moisture 4 oz glass/plastic jar Cool to 2 - 6° C 7 days

WA

TER

RCRA Metals (6010B); except Hg (7470) 250 ml plastic bottle HNO3 to pH<2, 6 months; mercury 28 days

PAHs (8070D) 1 L amber glass bottle Cool to 2 - 6° C 7 days for extraction; 40 days for analysis

Note: C = centigrade, Hg = mercury, L = liter, HNO3 = nitric acid, ml = milliliter, oz = ounce, PAH = polynuclear aromatic hydrocarbon, RCRA = Resource Conservation and Recovery Act

Site Investigation Work Plan St. Ann Center – Bucyrus Campus

Table 3 Field and Lab QA/QC Sample Requirements

Page 1 of 1 October 8, 2015

QC Sample Type Frequency of Sample/Analysis Details Field Samples

Duplicate Samples

1 duplicate per 20 samples per matrix, or 1 duplicate per sample matrix if fewer than 20 samples

Duplicate sample to be collected by the same methods at the same time as the original sample. Used to verify sample and analytical reproducibility.

Equipment/Field

Blanks*

1 equipment blank per 20 samples, minimum 1 equipment blank per day per sample matrix

or 1 field blank per bottle lot used, or one per site, whichever is more frequent

Distilled water placed into contact with sampling equipment. Used to assess quality of data from field sampling and decontamination procedures. * If all disposable equipment/single use sampling equipment is being used, then field blanks may be collected at a rate of 1 per bottle lot or per site, whichever is more frequent.

Trip Blanks

1 trip blank per cooler containing samples for VOC analysis for water samples

Laboratory prepared organic-free blank to assess potential contamination during sample container shipment and storage, for VOCs in water only.

1 trip blank per field sampling event, or per lot of bottles for soils, whichever is more frequent

For soil VOC samples preserved with methanol, one set of preserved vials will be included to assess potential contamination during sample container shipment and storage.

Lab Samples Method Blanks 1 method blank per daily run of samples prepared, or per

laboratory SOP

Laboratory blank sample to assess potential for contamination from laboratory instruments or procedures.

Laboratory Control Samples

and Duplicates Analyzed as per method requirements and laboratory SOPs

Evaluates laboratory reproducibility.

Note: MS/MSD = matrix spike/matrix spike duplicate QA = quality assurance QA/QC = quality assurance/quality control SOP(s) = standard operating procedure(s) VOC = volatile organic compound


FIGURES

Historical Topographic Map

→

NTARGET QUADTARGET QUADNAME: MILWAUKEEMAP YEAR: 1971PHOTOREVISED FROM :1958SERIES: 7.5SCALE: 1:24000

SITE NAME: North 24th Place/North Avenue ADDRESS: North 24th Place/North Avenue

Milwaukee, WI 53206LAT/LONG: 43.0614 / -87.9439

CLIENT: Sigma Env. Services, Inc.CONTACT: Dale PalkowskiINQUIRY#: 3365395.4RESEARCH DATE: 07/12/2012

SITE LOCATION MAP

1FIGURE

Scale 1 : 24,0001 inch = 2,000 feet

PARK EAST “D” REDEVELOPMENTMILWAUKEE, WISCONSIN

Located in Southwest 1/4 of Section 18, T7N, R22E USGS Milwaukee Quadrangle (1971, photorevised 1958)

7.5 minute, 1 : 24,000 Topographic Map Collection

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93.68

93.60

93.60 93.60

94.75

94.75

93.7093.6093.70

95.20

94.70

94.70

94.70

93.50

93.7093.6594.00

94.10

93.90

92.90

94.00

94.00

93.25

93.65

93.65

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93.30

93.30

94.0093.75

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92.75

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94.10 94.10

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93.70 93.70

94.70

94.10

95.25

94.00 94.60

92.90

92.80

93.50

93.25

93.50

93.50

94.00

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94.10

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DOOR96.00

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93.15

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94.5

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94.5094.50

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93.85

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88

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92.70

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90.85

94.40

94.50

93.90

93.50

95.1694.50

95.50

95.50

MATCH±92.76

MATCH±92.50

93.56

93.48

MATCH±92.02

MATCH±91.80

92.78

92.68

12" F.E.S.88.00

EXISTING GAS MAIN

PROPOSED WATER SERVICE

EXISTING WATER MAIN

EXISTING STORM SEWER

SANITARY MANHOLE

FIRE HYDRANT

EXISTING SANITARY SEWER

EXISTING ELECTRICAL LINE

EXISTING WATER VALVE

PROPOSED WATER VALVE

PROPOSED ELECTRICAL LINE

PROPOSED GAS MAIN

PROPOSED SANITARY SEWER

PROPOSED STORM SEWER

EXISTING STORM STRUCTURE

OVERHEAD WIRES

GAS GAS

GAS GAS

ST ST ST

E E

E E

W W

SAN SAN SAN

OHW OHW

EXISTING POWER POLES

PROPOSED STORM STRUCTURE

EXISTING LIGHT POLES

DENOTES EMERGENCY OVERFLOW ROUTE / DRAINAGE

PATH

100.00 100.00 PROPOSED & EXISTING SPOT GRADE

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120054.00

March 31, 2014

1" = 30'

COMPLETED BUILDING

FFE=96.00

1. THE EXISTING SITE INFORMATION ON THIS PLAN WAS TAKEN FROM A SITE SURVEY

PROVIDED BY CAPITOL SURVEY ENTERPRISES. THE ENGINEER MAKES NO WARRANTY

OR REPRESENTATION WITH REFERENCE TO THE ACCURACY AND COMPLETENESS OF

THE EXISTING CONDITIONS INDICATED OR NOT INDICATED ON THE ENGINEERING

PLANS PROVIDED. THE CONTRACTOR SHALL VERIFY THE LOCATION OF ALL EXISTING

SITE CONDITIONS INCLUDING UNDERGROUND UTILITIES, UNDERGROUND UTILITY

ELEVATIONS, BUILDING SETBACKS AND EXISTING BUILDING LOCATIONS. THE

CONTRACTOR SHALL INFORM THE OWNER AND ENGINEER OF ANY DISCREPANCIES

PRIOR TO COMMENCING WITH WORK. QUESTIONS REGARDING THE EXISTING SURVEY

SHALL BE DIRECTED TO THE PARTIES LISTED ABOVE.

2. BEFORE PROCEEDING WITH ANY UTILITY CONSTRUCTION, CONTRACTOR SHALL

EXCAVATE EACH EXISTING LATERAL TO BE CONNECTED TO (VERIFYING ELEVATION,

LOCATION AND SIZE). SHOULD THE EXISTING UTILITY NOT BE AS INDICATED ON THE

PLAN, THE ENGINEER SHALL BE NOTIFIED IMMEDIATELY FOR EVALUATION.

3. ALL UTILITY CONSTRUCTION SHALL ADHERE TO THE STANDARD SPECIFICATIONS FOR

SEWER AND WATER CONSTRUCTION IN WISCONSIN (2003), AS WELL AS, THE CITY OF

MILWAUKEE CONSTRUCTION STANDARDS AND THE DEPT. OF COMMERCE SEC. 82-87.

4. ALL UTILITY PERMITS MUST BE RECEIVED FROM THE CITY OF MILWAUKEE PRIOR TO

THE START OF CONSTRUCTION.

5. NOTIFY THE PUBLIC WORKS INSPECTION DEPT. AT LEAST 48 HOURS BEFORE STARTING

CONSTRUCTION.

6. BACKFILL REQUIREMENTS AND ROADWAY/SIDEWALK RESTORATION SHALL ADHERE TO

LOCAL STANDARDS (GRANULAR BACKFILL UNDER OR WITHIN 5' OF CURBS, SIDEWALK,

OR PAVEMENT. SPOIL MAY BE USED ELSEWHERE. SLURRY BACKFILL WILL BE

REQUIRED IN PUBLIC ROADWAYS.)

7. ALL BUILDING UTILITIES SHALL BE VERIFIED WITH THE ARCHITECTURAL PLANS PRIOR

TO CONSTRUCTION.

8. ALL PROPOSED WATERMAIN SHALL BE PVC SDR 18, CLASS 150, AWWA C900 WITH

ELASTOMERIC JOINTS.

9. PROPOSED SANITARY SEWER PIPE SHALL BE PVC, ASTM D-3034, SDR 35 WITH RUBBER

GASKETED JOINTS CONFORMING TO ASTM D-3212.

10. PROPOSED STORM SEWER SHALL BE PVC, ASTM D-3034, SDR 35 WITH RUBBER

ELASTOMERIC JOINTS CONFORMING TO ASTM D-3212 (UNLESS OTHERWISE NOTED).

11. UTILITY TRENCHES SHALL BE MECHANICALLY COMPACTED IN ACCORDANCE WITH THE

STANDARD SPECIFICATIONS FOR SEWER AND WATER CONSTRUCTION IN WISCONSIN.

12. SILT FENCE AND ALL OTHER EROSION CONTROL METHODS MUST BE INSTALLED PRIOR

TO COMMENCEMENT OF CONSTRUCTION. ALSO, CONTRACTOR IS RESPONSIBLE FOR

REMOVING EROSION CONTROL METHODS ONCE THE SITE IS STABILIZED.

13. THE PROPOSED SITE LOCATION AND SURROUNDING STREETS MUST BE KEPT DEBRIS

FREE. SWEEP STREETS AS NEEDED TO MAINTAIN CLEAN STREETS.

14. ALL EXCAVATED OR STRIPPED MATERIALS NOT BEING REPLACED IN UTILITY TRENCHES

OR BEING USED FOR FILL SHALL BE REMOVED FROM THE SITE, UNLESS OTHERWISE

DIRECTED BY THE OWNER.

15. ALL DISTURBED GRASS AREAS SHALL BE STABILIZED (PER DNR TECHNICAL

STANDARDS) WITHIN 7 DAYS OF COMPLETION. DISTURBED GRASS AREAS SHALL BE

TOPSOILED (6"), RESEEDED AND STABILIZED. AREAS WITH A SLOPE OF 3H:1V OR

STEEPER SHALL BE COVERED WITH A CLASS 1 - TYPE A EROSION FABRIC. (SEE

SPECIFICATIONS)

16. SEE ARCHITECTURAL PLANS FOR EXACT BUILDING & FOUNDATION DETAILS AND

ORIENTATION.

17. ALL ON-SITE CONCRETE CURB AND GUTTER TO BE 18" WIDE VERTICAL FACE, UNLESS

OTHERWISE NOTED. REVERSE OR REGULAR STYLE CURB DENOTED ON PLANS.

18. ALL CURB ELEVATIONS ARE EDGE OF PAVEMENT UNLESS OTHERWISE NOTED. SEE

CURB DETAIL FOR TOP OF CURB ELEVATIONS.

19. ALL CURB RADII ARE MEASURED TO THE FACE OF CURB UNLESS OTHERWISE NOTED.

20. CONTRACTOR SHALL MATCH PROPOSED CONCRETE CURB AND GUTTER, SIDEWALK

AND PAVEMENT TO EXISTING IN ELEVATION AND ALIGNMENT.

21. REMOVAL OF CURB AND GUTTER, SIDEWALK AND PAVEMENT SHALL BE IN

ACCORDANCE WITH THE STANDARD SPECIFICATIONS OF THE WISCONSIN D.O.T.

22. ALL CONCRETE FOR CURB AND GUTTER, ROADWAY AND SIDEWALKS MUST CONFORM

TO THE STANDARD SPECIFICATIONS FOR READY MIXED CONCRETE. MINIMUM 28 DAY

COMPRESSIVE STRENGTH TEST MUST EQUAL 4000 PSI.

23. CONTRACTOR IS RESPONSIBLE FOR PROTECTING ALL PROPERTY CORNERS.

24. CONTRACTOR IS RESPONSIBLE FOR REPAIRING ANY DAMAGE TO EXISTING UTILITIES

OR SITE IMPROVEMENTS. CONTRACTOR SHALL DOCUMENT ALL EXISTING DAMAGE

PRIOR TO START OF CONSTRUCTION AND NOTIFY CONSTRUCTION MANAGER OF ANY

FINDINGS.

25. PROJECT SAFETY ON-SITE SHALL BE THE SOLE RESPONSIBILITY OF THE CONTRACTOR.

26. CONTRACTOR IS RESPONSIBLE FOR VERIFYING EXISTING SOIL CONDITIONS,

CONSTRUCTION MANAGER MAY HAVE SOILS REPORT FOR MORE INFO.

27. CONTRACTOR IS RESPONSIBLE FOR PROVIDING THE OWNER WITH A SET OF MARKED

UP PLANS (AS-BUILTS) SHOWING ANY CHANGES DURING CONSTRUCTION.

NORTH AVENUE

24

TH

S

TR

EE

T

25T

H S

TR

EE

T

M

E

D

F

O

R

D

A

V

E

N

U

E

MEINECKE AVENUE

SITE LAYOUT, SAMPLE LOCATIONS (2015), AND PROPOSED ENGINEERED CAP LIMITS

DENOTES PROPOSED EMERGENCYOVERFLOW ROUTE (TYP.)

DENOTES PROPOSED STORMSEWER (SEE BID PACK 1)

MATCH EXISTING PAVEMENT GRADESENSURE POSITIVE DRAINAGE (TYP)

PROPOSED BIO-FILTRATIONBASIN (SEE BID PACK 1)

PROPOSED BIO-FILTRATIONBASIN (SEE BID PACK 1)

FUTURE BUILDINGADDITION

1. REFER TO BID PACK 1 C1.00 MASS GRADING AND UTILITY PLAN FOR ALL

STORM SEWER INFORMATION.

2. GRADING SHOW ON THIS SHEET (C2.02) SHALL SUPERSEDE ANY

GRADING SHOWN ON BID PACKAGE 1 C1.00 MASS GRADING AND UTILITY

PLAN.

DENOTES PROPOSEDHIGH POINT (TYP)

DENOTES PROPOSED REVERSESTYLE CURB (TYP)

SEE ADA PARKING DETAILFOR DETAILED GRADING IN

THIS AREA

SEE ADA PARKING DETAILFOR DETAILED GRADING INTHIS AREA

GRAB 1GRAB 2

GRAB 4

GRAB 3SAE-1

SAE-4

SAE-10

GRAB 1

SAE-1

SS-5

SS-2

SS-4 SS-6

SS-5

SS-7

SS-10 SS-9 SS-8

SS-1

SS-2 SS-3

STOCKPILE SAMPLE (STANTEC, 2015)

IN-SITU SOIL SAMPLE (STANTEC, 2015)

STOCKPILE SAMPLE (SIGMA, 2015)

IN-SITU SOIL SAMPLE (SIGMA, 2015)

PROPOSED BORING LOCATION (STANTEC)

APPROXIMATE EXTENT OF PROPOSED CAP FOR GRADED STOCKPILE SOILS WITH CONTOURS

NOTE: THIS FIGURE WAS ADAPTED AND MODIFIED BY STANTEC CONSULTING SERVICES INC. FROM A DRAWING (SHEET C2.02 GRADING PLAN) PREPARED BY ZIMMERMAN ARCHITECTURAL STUDIOS, INC.

APPROXIMATE EXTENT OF PROPOSED CAP FOR PLAYGROUND AREAS

FIGURE 2

dbholmes

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PLAY AREA 1

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PLAY AREA 2

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Polygon

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APPENDIX A

RECENT SITE ENVIRONMENTAL DATA (THE SIGMA GROUP, 2014-15)

Table 1

UST Closure Soil Analytical Results

St. Ann Center for Intergenerational Care

Sigma Project No. 14643

Soil Sample Location: 1 2 3 4 4.5 5 6 STOCKPILE

Sample Depth (feet bgs): 8 2-4 8 0-4 8 8 0-4 5-7 7-9 8 8 COMP Groundwater Non-Industrial Industrial

Sample Collection Date: 10/21/14 10/23/14 10/21/14 10/23/14 10/21/14 10/21/14 10/23/14 10/23/14 10/23/14 10/21/14 10/21/14 10/23/14 Pathway Direct Contact Direct Contact

Depth to Groundwater (feet bgs): 9 +/- 9 +/- 9 +/- 9 +/- 9 +/- 9 +/- 9 +/- 9 +/- 9 +/- 9 +/- 9 +/- 9 +/- RCL 4

RCL 5

RCL 6

Unsaturated/Smear Zone (U) or Saturated (S): U U U U U U U U U U U U

Organic Vapor Monitor ppm 110 0.0 542 0.0 29 1823 0.0 1.5 0.0 126 77 334 NS NS NS

Gasoline Range Organics mg/kg NA NA NA NA NA NA NA NA NA NA NA 44 NA NA NA

PVOCs & Detected VOCs

Benzene µg/kg 237 <25 670 <25 48 [10100] <25 93 <25 271 79 530 5.1 1,490 7,410

Ethylbenzene µg/kg 31 <25 134 <25 77 [12800] <25 <25 <25 66 <25 450 1,570 7,470 37,000

Methyl-tert-butyl-ether µg/kg <25 <25 <25 <25 <25 <250 <25 <25 <25 <25 <25 <25 27 59,400 293,000

Naphthalene µg/kg 61 J 27.3 88 52 J 66 J [12200] <25 34 J 63 J 111 <25 490 658.2 5,150 26,000

Toluene µg/kg 63 <25 85 40 <25 750 <25 <25 <25 45 <25 30 1,107.2 818,000 818,000

1,2,4-Trimethylbenzene µg/kg 49 <25 45 <25 590 56,000 <25 <25 <25 286 54 2,250 89,800 219,000

1,3,5-Trimethylbenzene µg/kg 58 <25 96 <25 209 20,600 <25 41 36 233 33 930 182,000 182,000

Xylenes (total) µg/kg 157 <50 227 26.3 J 450 63,920 <50 50 <50 276 81 1,884 3,940 258,000 258,000

Lead mg/kg NA 23 NA 49 NA NA 39 9.3 17 NA NA 93 27 400 800

Cumulative DC RCL Exceeded (Y/N)? N N N N N Y N N N N N N --- --- ---

Notes:

1. Unsaturated/smear zone versus satured soil conditions based on: (1) measured water levels in adjacent/nearby monitoring wells, (2) soil moisture conditions recorded on soil boring logs, and/or (3) soil moisture contents reported on laboratory analytical reports.

2. Analytical units: µg/kg = micrograms per kilogram (equivalent to parts per billion, ppb)

mg/kg = milligrams per kilogram (equivalent to parts per million, ppm)

3. NA = not analyzed

7. NS = no standard established

8. Laboratory flags: "J" = Analyte detected between Limit of Detection and Limit of Quantitation

9. Exceedances: BOLD = Concentration exceeds Groundwater Pathway RCL (unsaturated soil samples only)

[ ] = Concentration exceeds Non-Industrial OR Industrial Direct Contact RCL (unsaturated soil samples only)

1,382.1

4. Groundwater Pathway RCL = Residual Contaminant Level for protection of groundwater as presented on the WDNR's RCL Spreadsheet (dated June 2014) referenced in WDNR guidance document PUB-RR-890 "Soil Residual Contaminant Level Determinations Using the US EPA

Regional Screening Level Web Calculator", dated June 2014

5. Non-Industrial Direct Contact RCL = Residual Contaminant Level for protection of direct contact at a non-industrial property as presented on the WDNR's RCL Spreadsheet (dated June 2014) with default input parameters as referenced in WDNR guidance document PUB-RR-890 "Soil

Residual Contaminant Level Determinations Using the US EPA Regional Screening Level Web Calculator", dated June 2014

6. Industrial Direct Contact RCL = Residual Contaminant Level for protection of direct contact at an industrial property as presented on the WDNR's RCL Spreadsheet (dated June 2014) with default input parameters as referenced in WDNR guidance document PUB-RR-890 "Soil


RCRA Metals

Page 1 of 3 Sigma Environmental Services, Inc. I:\St Ann Center for Intergenerational Care\14643 - 24th and North\tables\UST removal Soil Quality\UST 1-2014-10

DRAFT

Table 1

UST Closure Soil Analytical Results



Soil Sample Location: N-1 S-1 S-2 E-1 W-1 BASE-1 BASE-2

Sample Depth (feet bgs): 5-7 5-7 5-7 5-7 5-7 10 10 Groundwater Non-Industrial Industrial

Sample Collection Date: 11/26/14 11/26/14 11/26/14 11/26/14 11/26/14 11/26/14 11/26/14 Pathway Direct Contact Direct Contact

Depth to Groundwater (feet bgs): 9+/- 9+/- 9+/- 9+/- 9+/- 9+/- 9+/- RCL 4 RCL

5RCL

6

Unsaturated/Smear Zone (U) or Saturated (S): U U U U U U/S U/S

Organic Vapor Monitor ppm 6.5 0.3 0.4 0.1 0.9 0.2 0.5 NS NS NS


Benzene µg/kg <9.2 <9.2 <9.2 <9.2 <9.2 <9.2 <9.2 5.1 1,490 7,410

Ethylbenzene µg/kg <10 <10 <10 <10 <10 <10 <10 1,570 7,470 37,000

Methyl-tert-butyl-ether µg/kg <30 <30 <30 <30 <30 <30 <30 27 59,400 293,000

Naphthalene µg/kg <110 <110 <110 <110 <110 <110 <110 658.2 5,150 26,000

Toluene µg/kg <20 <20 <20 <20 <20 <20 <20 1,107.2 818,000 818,000

1,2,4-Trimethylbenzene µg/kg <26 <26 <26 <26 <26 <26 <26 89,800 219,000

1,3,5-Trimethylbenzene µg/kg <26 <26 <26 <26 <26 <26 <26 182,000 182,000

Xylenes (total) µg/kg <99 <99 <99 <99 <99 <99 <99 3,940 258,000 258,000

Lead mg/kg 37.4 90.0 49.2 106 8.97 6.59 5.54 27 400 800

Cumulative DC RCL Exceeded (Y/N)? N N N N N N N --- --- ---

Notes:

1. Unsaturated/smear zone versus satured soil conditions based on: (1) measured water levels in adjacent/nearby monitoring wells, (2) soil moisture conditions recorded on soil boring logs, and/or (3) soil moisture contents reported on laboratory analytical reports.








6. Industrial Direct Contact RCL = Residual Contaminant Level for protection of direct contact at an industrial property as presented on the WDNR's RCL Spreadsheet (dated June 2014) with default input

parameters as referenced in WDNR guidance document PUB-RR-890 "Soil Residual Contaminant Level Determinations Using the US EPA Regional Screening Level Web Calculator", dated June 2014

1,382.1

RCRA Metals

4. Groundwater Pathway RCL = Residual Contaminant Level for protection of groundwater as presented on the WDNR's RCL Spreadsheet (dated June 2014) referenced in WDNR guidance document PUB-RR-

890 "Soil Residual Contaminant Level Determinations Using the US EPA Regional Screening Level Web Calculator", dated June 2014

5. Non-Industrial Direct Contact RCL = Residual Contaminant Level for protection of direct contact at a non-industrial property as presented on the WDNR's RCL Spreadsheet (dated June 2014) with default input

parameters as referenced in WDNR guidance document PUB-RR-890 "Soil Residual Contaminant Level Determinations Using the US EPA Regional Screening Level Web Calculator", dated June 2014

Page 2 of 3 Sigma Environmental Services, Inc.I:\St Ann Center for Intergenerational Care\14643 - 24th and North\tables\UST removal Soil Quality\UST 1-2014-11

DRAFT

Table 1

Geoprobe Soil Boring Analytical Results



Soil Sample Location:

Sample Depth (feet bgs): 2-4 8-10 2-4 8-10 2-4 8-10 2-4 8-10 Groundwater Non-Industrial Industrial

Sample Collection Date: 11/11/14 11/11/14 11/11/14 11/11/14 11/11/14 11/11/14 11/11/14 11/11/14 Pathway Direct Contact Direct Contact

Depth to Groundwater (feet bgs): 9 +/- 9 +/- 9 +/- 9 +/- 9 +/- 9 +/- 9 +/- 9 +/- RCL 4 RCL

5RCL

6

Unsaturated/Smear Zone (U) or Saturated (S): U U U U U U/S U U

Organic Vapor Monitor ppm 0.2 0.4 0.1 0.0 0.0 0.0 0.0 0.0 NS NS NS


Benzene µg/kg <25 <25 <25 <25 <25 33 <25 <25 5.1 1,490 7,410

Ethylbenzene µg/kg <25 <25 <25 <25 <25 <25 <25 <25 1,570 7,470 37,000

Methyl-tert-butyl-ether µg/kg <25 <25 <25 <25 <25 <25 <25 <25 27 59,400 293,000

Naphthalene µg/kg <25 <25 <25 <25 37 J <25 <25 <25 658.2 5,150 26,000

Toluene µg/kg <25 <25 <25 <25 <25 <25 <25 <25 1,107.2 818,000 818,000

1,2,4-Trimethylbenzene µg/kg <25 <25 <25 <25 <25 <25 <25 <25 89,800 219,000

1,3,5-Trimethylbenzene µg/kg <25 <25 <25 <25 <25 <25 <25 <25 182,000 182,000

Xylenes (total) µg/kg <75 <75 <75 <75 <75 <75 <75 <75 3,940 258,000 258,000

Lead mg/kg 230 19 84 4.3 86 5.6 14 8.3 27 400 800

Cumulative DC RCL Exceeded (Y/N)? N N N N N N N N --- --- ---

Notes:








SGP-1 SGP-2 SGP-4 SGP-4

1,382.1

RCRA Metals

4. Groundwater Pathway RCL = Residual Contaminant Level for protection of groundwater as presented on the WDNR's RCL Spreadsheet (dated June 2014) referenced in WDNR guidance document PUB-RR-890 "Soil


5. Non-Industrial Direct Contact RCL = Residual Contaminant Level for protection of direct contact at a non-industrial property as presented on the WDNR's RCL Spreadsheet (dated June 2014) with default input parameters

as referenced in WDNR guidance document PUB-RR-890 "Soil Residual Contaminant Level Determinations Using the US EPA Regional Screening Level Web Calculator", dated June 2014

6. Industrial Direct Contact RCL = Residual Contaminant Level for protection of direct contact at an industrial property as presented on the WDNR's RCL Spreadsheet (dated June 2014) with default input parameters as

referenced in WDNR guidance document PUB-RR-890 "Soil Residual Contaminant Level Determinations Using the US EPA Regional Screening Level Web Calculator", dated June 2014

1. Unsaturated/smear zone versus satured soil conditions based on: (1) measured water levels in adjacent/nearby monitoring wells, (2) soil moisture conditions recorded on soil boring logs, and/or (3) soil moisture contents

reported on laboratory analytical reports.

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Stantec Consulting Services, Inc. 12075 Corporate Parkway ... · 10/9/2015 · BRRTS No. - Bureau...

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