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December 2016Groundwater Monitoring and

Operations Report

Connor Homes1741 Route 7 South

Middlebury, Vermont

Mr. Mike ConnorConnor Homes

1741 Route 7 SouthMiddlebury, VT 05753

Project No. 223088PSMS Site No. 2011-4164

SMS Project Manager: Mr. Gerold Noyes

Date Submitted: March 27, 2017

Jonathan B. Ashley, P.E.Senior Engineer/Project Manager

TABLE OF CONTENTS

EXECUTIVE SUMMARY ........................................................................................................i

1.0 INTRODUCTION ......................................................................................................... 1

2.0 SUMMARY OF COMPLETED WORK ...................................................................... 2

3.0 SITE OPERATIONS AND MONITORING RESULTS.............................................. 3

3.1 Groundwater Elevations and Flow Directions....................................................... 33.2 Water Quality Monitoring Results ........................................................................ 43.3 Groundwater Analytical Results ........................................................................... 53.4 QA/QC Results .................................................................................................... 83.5 Treatment System Operation and Monitoring ....................................................... 9

3.5.1 Diffuser System ........................................................................................ 93.5.2 Sub-Slab Venting System ....................................................................... 103.5.3 Discharge Monitoring ............................................................................. 103.5.4 Air Sampling .......................................................................................... 11

4.0 FINDINGS AND CONCLUSIONS ............................................................................. 12

5.0 RECOMMENDATIONS………….……………………………………………………13

TABLES

Table 1 – Summary of Water Table ElevationsTable 2 – Water Quality Monitoring ResultsTable 3 – Groundwater Laboratory Analysis Results for VOCsTable 4 – Sub Slab Venting and Diffuser System MonitoringTable 5 – Liquid Treatment System MonitoringTable 6 – Air Sample Analysis ResultsTable 7 – Hydraulic Gradients

FIGURES

Figure 1 – Existing Conditions Site PlanFigure 2 – Groundwater Elevation Site PlanFigure 3 – Trichloroethylene Distribution Site PlanFigure 4 – Total Dichloroethylenes Distribution Site PlanFigure 5 – Vinyl Chloride Distribution Site Plan

APPENDICES

Appendix A – Contaminant Trend GraphsAppendix B – Water Quality Averages by AreaAppendix C – Groundwater Sampling Lab ReportAppendix D – Discharge Sampling Lab ReportsAppendix E – Diffuser Treatment System Trend GraphsAppendix F – Air Sampling Lab Report

Connor HomesGroundwater Monitoring and Operations ReportSMS No. 2011-4164

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EXECUTIVE SUMMARY

This Groundwater Monitoring and Operations Report was prepared by DuBois & King, Inc. for theConnor Homes facility that is located at 1741 U.S. Route 7 South in Middlebury, Vermont (the site) onbehalf of the site owner (Connor Homes, LLC). The purpose of this report is to summarize recentanalytical data and operation and maintenance actions since from July through December 2016.

Corrective actions at the site, including the excavation of nearly 5,000 cubic yards of contaminated soilfrom three apparent source areas, were completed in November 2012 and May 2014. According to a June2015 letter from the Waste Management and Prevention Division, a minimum of eight (8) semi-annualgroundwater events are required to demonstrate declining groundwater contaminant levels and nocontaminant migration. Nine semi-annual sampling events have been completed following the 2012corrective action work, and six semi-annual sampling events have been completed following the May 2014remediation work.

Based on the data evaluated and the corrective actions completed, the following findings and conclusionshave been drawn:

· Control over the vapor intrusion pathway has been established by the consistent operation of thesub-slab ventilation system (as evidenced by induced vacuum being maintained beneath theconcrete slab);

· Groundwater elevation contours show that hydraulic control of groundwater migration from theformer waste storage shed area and the former drywell area is well established by the network ofunderdrains in the loading dock area that drain to the boiler room sump;

· The diffuser system treats the contaminated groundwater in the boiler room sump to levels thatconsistently meet the permitted discharge limits;

· Air extracted by the sub-slab venting system (from beneath the slab and from the boiler room sumpheadspace) still requires carbon treatment based on the December 2016 sampling results and thuswill be part of long term HVAC operations for the building;

· Based on the loading dock area groundwater quality, continuing treatment of the groundwater flowthrough the boiler room sump is needed, and the sump headspace air will continue to be drawnthrough the sub-slab depressurization system for treatment;

· Groundwater quality has substantially improved in the drywell area, the waste storage shed area,and areas downgradient of the floor drains as a result of the remediation work;

· Reducing conditions have been established in the site groundwater, which has been promotingbioremediation of the dissolved chlorinated solvents; and

· As a result of the remedial efforts and environmental controls installed, sensitive receptorsincluding drinking water, surface water, indoor air, and public utilities are no longer threatened.

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Based on the findings and conclusions, the following steps are recommended:

· Continue permit-required monthly sampling and monthly reporting of the boiler room sumpdischarge to verify compliance with the discharge permit (which expires in 2017);

· Renew the boiler room sump discharge permit in 2017 to cover the continued treatment anddischarge of groundwater flowing into the sump, requesting a reduction in sampling frequencyfrom monthly to quarterly;

· Continue quarterly sampling of DMH-LD to monitor contaminant concentrations influent to thediffuser system in the boiler room sump;

· Continue monitoring of the sub-slab venting system, diffuser system, and induced vacuum levels inconjunction with the discharge permit sampling visits as part of normal building system operations;

· Sample the indoor air in the production area and office area, as well as the untreated blowereffluent air once annually during the heating season; and

· Reduce the groundwater sampling frequency to annually, with the next sampling event inDecember 2017.


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1.0 INTRODUCTION

Site investigation activities and corrective action work at the site have been conducted at theConnor Homes facility in response to the discovery of dissolved chlorinated solvents on thesite. The facility is located at 1741 Route 7 South in Middlebury, Vermont. A Site LocationMap and Site Plan are attached as Sheet 1 of the attached plans.

Multiple site investigations starting in 2011 identified a plume of dissolved chlorinated solventson the Connor Homes site from apparent multiple source areas. Subsurface contaminationfrom a historical fuel oil release that occurred in the 1990s was also encountered.

A Corrective Action Plan (CAP) was developed and was approved by the State of Vermont,Department of Environmental Conservation, Waste Management Division, in a May 10, 2012letter. The CAP was a plan to actively remediate groundwater contamination from solventsthat leaked through a floor drain system, were released from a former waste storage area, andwere leaked from an apparent waste transfer pipe during previous property use and activitiesby a former printing business.

Excavation of the chlorinated solvent-contaminated soil with off-site thermal treatment of thecontaminated soil was selected as the preferred remedial alternative. Temporary fractionationtanks, bag filters, and liquid phase coconut shell carbon were installed for treatment ofgroundwater from dewatering the excavations and from underdrains in the loading dock area.After separating stormwater flows from the loading dock area underdrainage, a long-termliquid treatment system was installed for treating the underdrain water, and the temporarycarbon treatment system was removed.

The CAP also included addition of emulsified vegetable oil (EVO) to the subsurface (whilebackfilling the excavations) to promote biodegradation of the solvent contamination at a fasterrate than was occurring naturally. In addition, the CAP included installation of a sub-slabventing system to capture and treat vapors generated during in-situ bioremediation and tomitigate potential indoor air impacts.

As a supplement to the CAP, soil contaminated with chlorinated solvents was excavated from aformerly fenced-in transformer area where a drywell was located. The soil was shipped toHorizon Environnement, Inc. in Grandes-Piles, Quebec, Canada for landfilling. Contaminatedgroundwater from dewatering was pumped into a fractionation tank during excavation sitework; then the contaminated groundwater was shipped to Tradebe Treatment & RecyclingNortheast in Meriden, Connecticut for treatment. EVO was added to the excavation backfill topromote enhanced anaerobic biodegradation of the solvent contamination, and a culvert wellwas installed in the backfill to allow ongoing addition of EVO to the former drywell area.

The corrective actions were not designed to restore groundwater quality to meet drinking waterstandards since shallow groundwater is not used for drinking water for two main reasons: 1)Public water is available to the area; and 2) Local groundwater is contained within varved clayand does not produce sufficient quantities to serve as a drinking water supply. The intent of theCAP was to reduce the solvent concentrations in groundwater to levels that reduce the threat of


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impacts to indoor air via source removal, which allows natural attenuation processes to managethe remaining residual solvent contamination.

Continued site operations have included monitoring and maintenance of a sub-slab ventingsystem to capture and treat vapors beneath the Connor Homes building; and monitoring,sampling, and maintenance of the diffuser system that treats contaminated groundwater thatdrains to the facility’s boiler room sump. Site operations from July through December 2016are the subject of this report.

2.0 SUMMARY OF COMPLETED WORK

The monitoring, operations, and reporting activities that are presented in this report areconsistent with the ANR approved work scope included in the June 2016 GroundwaterMonitoring and Operations Report.

Field activities included monthly sampling of the boiler room sump discharge (from drainmanhole DMH-2) for compliance with the discharge permit for the treatment system. Duringthis reporting period, discharge samples were analyzed for the determination of volatile organiccompounds (VOCs) by United States Environmental Protection Agency (USEPA) Method8260 in September, and December and for TCE only in July, August, October, and November.Flow and pH were also monitored on a monthly basis according to the permit.

The sub-slab ventilation system and sump diffuser treatment system operations are monitoredin conjunction with the monthly discharge sampling. Monitoring includes observing andrecording vacuum, pressure, and temperature gauge readings on the ventilation system and thediffuser system, measuring differential pressure from pitot tubes on the sub-slab ventilationsystem using magnehelic gauges, recording electric meter readings for the systems, recordinghour counter readings for the boiler room sump pump, and using a photoionization detector(PID) to monitor VOC concentrations in the sub-slab ventilation system and the boiler roomsump.

Induced vacuum and PID headspace concentrations in the sub-slab vapor monitoring pointswere monitored monthly.

Groundwater monitoring activities were conducted at the site on December 13, 2016. Depthsto groundwater were measured in all of the on-site monitoring wells using a water level meter.

Samples were collected using low flow sampling techniques from wells MW-4, MW-5, MW-9, MW-28, MW-36, ESC-7RR, and TW-1R for the determination of VOCs by USEPAMethod 8260. Dedicated silicone and polyethylene tubing was used in each well to purgewater from an intake level near the well bottom through the head of a GeoPump II peristalticpump and connected to a flow-through cell. Water from the flow-through cell was dischargedto a bucket prior to placing in an on-site drum for later disposal. Water quality parameterswere measured in the flow-through cell using a YSI556 meter. Water quality parametersmeasured included dissolved oxygen, temperature, pH, oxidation reduction potential (ORP),and conductivity. To allow for collection of a representative groundwater sample from thededicated tubing, each sample was collected after conductivity measurements appeared tostabilize, unless the well went dry prior to stabilizing. If the well went dry prior to conductivity


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measurements stabilizing, the well was allowed to recharge and then sampled. The flow-through cell and probe were purged and decontaminated after each well.

Quality assurance/quality control (QA/QC) samples collected during this sampling eventincluded one duplicate sample collected from MW-9 (labeled DUP-1), and one trip blank.

SGS Accutest Laboratories, located in Marlborough, Massachusetts, performed all thelaboratory analyses of water samples collected for this project.

Two Summa canisters with eight-hour flow regulators were provided by SGS AccutestLaboratories of Dayton, New Jersey to collect indoor air samples for the determination ofVOCs by USEPA Method TO-15 from the production area and the office area. On December18, 2016, the samples were collected during the night and sent to SGS Accutest to be analyzedfor chlorinated solvents. Additionally one Summa canister was provided to collect a grabsample of the blower effluent and tested for VOCs by USEPA Method TO-15. This samplewas also collected during the night on December 18, 2016.

3.0 SITE OPERATIONS AND MONITORING RESULTS

The site operations and monitoring results are described below.

3.1 Groundwater Elevations and Flow Direction

On December 13, 2016, groundwater levels were measured in the on-site monitoringwells and in the loading dock drain manhole. Groundwater elevation data is presentedin Table 1. Depths to water in the monitoring wells ranged from 2.37 feet below topof casing (btoc) in well MW-34 to 6.23 feet btoc in well MW-30 with an average of4.82 feet. Compared to groundwater levels measured in June 2016, averagegroundwater levels have declined by 0.58 feet.

Groundwater contours that were interpreted from the calculated groundwaterelevations are presented on Sheet 2 of the attached plans. Groundwater generallyflows to the west and northwest toward Route 7; however, the underdrain and footingdrain system in the loading dock area creates a hydraulic low point that has a significantinfluence on groundwater flow patterns between the former waste storage shed and themain building, controlling migration of residual groundwater contamination from thisarea. Based on the groundwater contouring, the hydraulic gradients along the flowpaths shown were:

· Beneath the production area in the vicinity of the floor drains system: 0.005feet per foot;

· Between the main building and Route 7 (downgradient of the floor drains):0.054 to 0.064 feet per foot; and

· Near the former waste storage shed: 0.054 feet per foot.

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The hydraulic gradient data indicates that groundwater movement beneath the buildingin the floor drains area is more than 10 times slower than groundwater movement in theareas outside the building.

3.2 Water Quality Monitoring Results

Water quality data including pH, ORP, dissolved oxygen, temperature, andconductivity were measured during low flow sampling of the monitoring wells. Themonitoring results are included in Table 2 and summarized below:

· pH at the site is optimal for in-situ bioremediation1; the average pH in the floordrains area was 7.04, the former waste storage shed plume was 6.68, and thetransformer/drywell area was 6.56. Per the semi-annual monitoring schedule,monitoring wells in the loading dock service area were not sampled during thissampling round.

· The average ORP was favorable for natural attenuation of chlorinated solventsin the vicinity of the floor drains (-111.73), the former waste storage shed (-237.80), and in the former transformer/drywell area (-84.40).

· The average dissolved oxygen levels were within the favorable range fornatural attenuation of chlorinated solvents in the vicinity of the former wastestorage shed (0.59), and in the former transformer/drywell area (0.75), whilethey were less favorable in the area of the floor drains (1.20).

· The average temperature at the time of sampling was in the favorable range forin-situ bioremediation in the floor drains area (17.50°C), the former wastestorage shed area (10.90°C), and in the transformer/drywell area (10.23°C).

The history of water quality monitoring results for each individual well is shown on thetrend charts included in Appendix A.

Charts of the water quality parameter averages for each area of focus (the floor drainsarea, the former waste storage shed area, the loading dock area, and thetransformer/drywell area) are included in Appendix B. The charts are interpreted asfollows:

· ORP and dissolved oxygen levels in the loading dock area, former transformerarea, and the waste storage shed area are within the favorable range for naturalattenuation of chlorinated solvents following the soil excavation and EVOamendment.

· ORP and dissolved oxygen levels in the floor drains area continue to fluctuate.During this sampling event, ORP was in the favorable range and dissolvedoxygen was higher than desired for natural attenuation of chlorinated solvents.

1 Favorable and less favorable ranges for the parameters listed are from In Situ Bioremediation of ChlorinatedEthene: DNAPL Source Zones, ITRC, June 2008.


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· pH levels measured from monitoring wells in the floor drains area, wastestorage shed area, loading dock area, and the transformer area all display aslight decreasing trend towards being more acidic. pH levels in all four areasstarted around 7.25 and are now between 6.5 and 7.0 which resides in thefavorable range of 5.0 - 9.0 for natural attenuation of chlorinated solvents.

3.3 Groundwater Analytical Results

The December 13, 2016 groundwater sampling results are summarized in Table 3.The laboratory analytical reports are provided in Appendix C. Graphical trendanalyses of historical data are presented in Appendix A and Contaminant DistributionPlans are presented on Sheets 3, 4, and 5 of the attached plans.

Review of the trend graphs for individual monitoring wells in Appendix A and thecontaminant distribution plans (Sheets 3, 4, and 5) shows the following:

Former Waste Storage Shed Area

· TCE and cis-1,2-DCE concentrations in well MW-28 show a decreasing trendsince June 2013. Vinyl chloride concentrations continue to fluctuate as TCEbreaks down, with an overall decreasing trend since 2013.

Transformer/Drywell Area

· In wells MW-36 and TW-1R, TCE has been undetected since June 2015. WellECS-7RR shows a major decreasing trend since June 2013, and is currentlybelow the VGES.

· In well MW-36, vinyl chloride shows a slowly increasing trend sinceDecember 2015, and the overall cis-1,2-DCE trend is downward.

· Trans-1,2-DCE and cis-1,2-DCE trends in well ESC-7RR are decreasingsince 2013, and vinyl chloride generally appears stable.

· Cis-1,2-DCE and vinyl chloride in well TW-1R show fluctuatingconcentrations as TCE breaks down, with the December 2016 results anincrease as compared to June 2016.


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Floor Drains Area and Downgradient

· MW-4, located adjacent to the production area western sink, has had a slowlydecreasing trend in TCE concentrations over time, and a corresponding slightlyincreasing trend in cis-1,2-DCE and trans-1,2-DCE as TCE biodegrades.

· MW-5 is adjacent to the production area eastern sink. TCE concentrationshave been decreasing slightly since 2014, whereas cis-1,2-DCE and vinylchloride have been stable to slightly increasing since December 2014,indicating that TCE continues to biodegrade.

· In well MW-9, vinyl chloride shows an increasing trend and cis-1,2-DCE,trans-1,2-DCE, and vinyl chloride concentrations are continuing to become ahigher percentage of the total contaminants of concern. Together with thedeclining TCE concentrations, this suggests biodegradation of TCE (to itsbreakdown products) is occurring.

Overall Water Quality and Key Well Trends

The loading dock drain manhole (DMH-LD) receives groundwater flow from anetwork of underdrains at the site, including drains beneath the paved driveway nearthe former waste storage shed area; drains beneath the loading dock and the associatedconcrete pad; and footing drains for the retaining walls along the loading dock area(which drain the area downgradient of the transformer/drywell area and the area whereStandard Register previously had a former mineral spirits aboveground storage tank).

The DMH-LD trend graph shows fluctuating concentrations of TCE, vinyl chloride,and cis-1,2-DCE, with no obvious trend at this time.

The TCE trend graph shown below for key wells in the contaminant source areasshows substantial reductions following the excavation work, in some cases down tonon-detect. An overall decreasing trend in TCE concentrations is evident for the keywells.


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The cis-1,2-DCE trend graph shown below for key wells in the contaminant sourceareas shows overall decreasing trends in the individual wells. Recent slightlyincreasing trends in cis-1,2-DCE in the loading dock area indicate that TCE is beingeffectively biodegraded in the loading dock area.

The vinyl chloride trend graph shown below for key wells in the contaminant sourceareas shows fluctuations. This is likely because vinyl chloride, while it is biodegrading,is also a breakdown product that is produced as TCE and cis-1,2-DCE biodegrade.


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3.4 QA/QC Results

The laboratory data described above were evaluated for the following parameters priorto acceptance in this report:

· Correct sample identifications;

· Analysis date within method specified holding times;

· Acceptable detection limit multipliers;

· Sample receipt summaries (reviewed for any issues);

· Acceptable relative percent difference between selected samples and theirduplicates; and

· Acceptable surrogate recoveries.

Surrogate recoveries reported by the laboratory were within acceptable limits.

No target analyses were detected in the trip blank that was shipped with the December2016 groundwater samples.

A duplicate sample was collected from wellsMW-9 (DUP-1). The average relativepercent difference (RPD) between MW-29R and DUP-1 was 2.83%. An RPD of upto 25% is generally considered acceptable for precision.

All of the samples submitted were preserved and were received within the desiredtemperature and pH range. The samples were properly preserved and were analyzedwithin the specified holding times.

Based on an evaluation of the above-described parameters, the data were determined tobe acceptable.


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3.5 Treatment System Operation and Monitoring

The existing treatment system includes a diffuser system for treatment of the boilerroom sump water and a sub-slab ventilation system. Treatment system operations andmonitoring included monthly sampling for compliance with the project’s dischargepermit.

System maintenance completed during this reporting period included:

· Replacement of the inlet particulate filter on the sub-slab depressurizationsystem on September 14, 2016;

· The compressor for the for the diffuser treatment system was replaced afterfailing in December 2016; and

· The filters for the compressor were replaced in December 2016.

3.5.1 Diffuser System

A diffuser system treats the boiler room sump water. The diffuser systemincludes:

· A rotary vane compressor with a ball valve, digital pressure gauge, acheck valve assembly, and an air inlet filter;

· ¾-inch diameter HeavySet® self-weighted air tubing;

· Two EDI FlexAir™ T-Series 40-inch long fine bubble diffusers; and

· A Flowline EchoSwitch II sonic level switch to control operation of thecompressor based on the water level in the boiler room sump.

Contaminated groundwater flows into the boiler room sump from theperforated underdrains in the loading dock, associated driveway area, andretaining wall footing drains via DMH-LD. Air from the compressor isinjected into the boiler room sump water through the two diffuser tubes,creating fine bubbling that strips dissolved VOCs from the water. Vaporsgenerated by the diffuser system in the sump headspace are currently drawnthrough the sub-slab venting blower, providing vapor phase carbon treatmentof the diffuser offgas.

Monitoring data from the operation of the diffuser system is included in Table4.

From July 2016 through December 2016, the diffuser system agitated andstripped VOCs from the contaminated groundwater with diffuser flow rates of

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approximately 26.3 to 27.3 cubic feet per minute (cfm) at pressures of 1.45 to1.93 pounds per square inch.

3.5.2 Sub-Slab Venting System

The sub-slab venting system includes:

· A moisture separator;

· A particulate air filter;

· A regenerative blower;

· Two Carbtrol vapor phase carbon drums assembled in series; and

· Valves, gauges, and sample ports.

Full time operation of the sub-slab ventilation system began on December 23,2012. General operation and maintenance of the sub-slab venting system wasconducted on a monthly basis. Operation and maintenance primarily includesmonitoring and adjustments to pressures and flow rates. System monitoringdata is included in Table 4.

Induced vacuum monitoring results that were collected from the six vapormonitoring points using magnehelic gauges showed sub-slab vacuums of:

· 0.12 to 0.97 inches of water (”H2O) along the western floor drains area(VP-1, VP-2, and VP-3) from July through December 2016; and

· 0.16 to 1.0”H2O along the eastern floor drains area (VP-4, VP-5, andVP-6) from July through December 2016.

No vapor phase carbon drums required replacement between July andDecember, 2016.

A grab air sample was collected from the sub-slab venting system onDecember 18, 2016 with air being drawn from sub-slab and the boiler roomsump headspace. Results of the air sample analysis are described in Section3.5.4.

3.5.3 Discharge Monitoring

Water that collects and is treated in the boiler room sump is discharged by anexisting sump pump controlled by float switches. The discharge from thesump pump connects to existing roof drain piping under the Connor Homesbuilding, which drains to a ditch at the corner of Route 7 and Middle Road


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South (on the west side of Route 7). The discharge was sampled once permonth to comply with the discharge permit conditions.

The discharge sampling laboratory analytical reports from July 12, 2016through December 29, 2016 are included in Appendix D. The data is alsotabulated and depicted on the diffuser treatment system trend graphs inAppendix E. As shown, the diffuser system maintains VOC concentrationsunder the limits specified in the discharge permit.

Table 5 includes estimated flow rates for discharges from the boiler roomsump, as well as rainfall data from the Middlebury College weather station.Average daily discharge rates for each month from July through December2016 ranged from 137 gallons per day (gpd) to 883 gpd, which are orders ofmagnitude lower than the maximum permitted discharge rates.

3.5.4 Air Sampling

Indoor Air

Summa canisters provided by SGS Accutest Laboratories of Dayton, NewJersey were used to collect two approximately eight-hour duration air sampleson December 18, 2016. One indoor air sample was collected in the productionarea, between the eastern and western sink locations. The other indoor airsample was collected from roughly the center of the office area.

The air samples were submitted for TO-15 analysis for chlorinated solvents.The air sampling results are summarized in Table 6 along with the historic airsampling results from the site. The laboratory report is included in AppendixF.

Tetrachloroethene was detected at concentrations of 4.3 micrograms per cubicmeter (µg/m3) in the production area and 1.8 µg/m3 in the office area, whichwere each approximately 50% lower than the concentrations detected in June2016, but still exceeded the Vermont Target Indoor Air Screening Value (0.57µg/m3). Chloromethane was detected in the indoor air samples, but does notappear related to the site contamination, as it was not detected in the blowereffluent or groundwater; it may be from general industrial use in the facility.

Cis-1,2-DCE, and vinyl chloride were not detected in the production area oroffice area indoor air samples. TCE was detected, but was below the VermontTarget Indoor Air Screening Value (0.5 µg/m3) in both samples.

Sub-Slab Venting System

On December 18, 2016, an air sample was also collected from the sub-slabventing system effluent (pre-treatment). The sample was collected in a Summacanister provided by SGS Accutest Laboratories of Dayton, New Jersey, and

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analyzed for VOCs by USEPA Method TO-15. The analysis results (inAppendix F) showed vinyl chloride, tetrachloroethene, TCE, and methylenechloride exceeded the Vermont Target Indoor Air Value and HazardousAmbient Air Standard in the pre-treatment air extracted from beneath the slaband from the boiler room sump headspace.

PID readings were recorded before (0.1 ppmv) and after (0.1 ppmv) the airsample was taken; as compared to a total contaminants of concernconcentration of 0.37 ppmv based on the laboratory analysis; the ratio of theseresults was used to estimate the VOC removal rate shown in Table 4.

4.0 FINDINGS AND CONCLUSIONS

Based on the data evaluated and the corrective actions completed, the following findings andconclusions have been drawn:

· Control over the vapor intrusion pathway has been established by the consistentoperation of the sub-slab ventilation system (as evidenced by induced vacuum beingmaintained beneath the concrete slab);

· Groundwater elevation contours show that hydraulic control of groundwater migrationfrom the former waste storage shed area and the former drywell area is well establishedby the network of underdrains in the loading dock area that drain to the boiler roomsump;

· The diffuser system treats the contaminated groundwater in the boiler room sump tolevels that consistently meet the permitted discharge limits;

· Air extracted by the sub-slab venting system (from beneath the slab and from the boilerroom sump headspace) still requires carbon treatment based on the December 2016sampling results and thus will be part of the long term HVAC operations for thebuilding;

· Based on the loading dock area groundwater quality, continuing treatment of thegroundwater flow through the boiler room sump is needed, and the sump headspace airwill continue to be drawn through the sub-slab depressurization system for treatment;

· Groundwater quality has substantially improved in the drywell area, the waste storageshed area, and areas downgradient of the floor drains as a result of the remediationwork;

· Reducing conditions have been established in the site groundwater, which has beenpromoting bioremediation of the dissolved chlorinated solvents; and


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· As a result of the remedial efforts and environmental controls installed, sensitivereceptors including drinking water, surface water, indoor air, and public utilities are nolonger threatened.

According to a June 2015 letter from the Waste Management and Prevention Division, aminimum of eight (8) semi-annual groundwater events are required to demonstrate declininggroundwater contaminant levels and no contaminant migration2. As of December 2016, a totalof six (6) post-excavation monitoring events have been completed.

5.0 RECOMMENDATIONS

Based on the current site conditions, the following activities are recommended:

· Continue permit-required monthly sampling and monthly reporting of the boiler roomsump discharge to verify compliance with the discharge permit (which expires in2017);

· Renew the boiler room sump discharge permit in 2017 to cover the continued treatmentand discharge of groundwater flowing into the sump, requesting a reduction insampling frequency from monthly to quarterly;

· Continue quarterly sampling of DMH-LD to monitor contaminant concentrationsinfluent to the diffuser system in the boiler room sump;

· Continue monitoring of the sub-slab venting system, diffuser system, and inducedvacuum levels in conjunction with the discharge permit sampling visits as part ofnormal building system operations;

· Sample the indoor air in the production area and office area, as well as the untreatedblower effluent air once annually during the heating season;

· Continue groundwater sampling according to the following table; the items that arelisted with a frequency of quarterly, semi-annual, and annual are scheduled to besampled in June 2017; and

· Reduce the groundwater sampling frequency to annually, with the next sampling eventin December 2017 and change the sampling of select wells with well-documentedcontaminant trends (MW-35, MW-36, and TW-3) as marked in redline/strikeoutformat on the following table.

2 Following the May 2014 Transformer Area Excavation

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Monitoring Point

Recommended Frequency of MonitoringWater Level Water Quality

Parameters (D.O., pH,ORB, Temp., Cond.)

Sample for LabAnalysis

MW-1 Semi-Annual Annual AnnualMW-2 Semi-Annual N/A N/AMW-3 Semi-Annual Annual AnnualMW-4 Semi-Annual Semi-Annual Semi-AnnualMW-5 Semi-Annual Semi-Annual Semi-AnnualMW-6 Semi-Annual N/A N/AMW-8 Semi-Annual Annual AnnualMW-9 Semi-Annual Semi-Annual Semi-Annual

MW-10 Semi-Annual N/A N/AMW-12 Semi-Annual Annual AnnualMW-13 Semi-Annual N/A – Well Destroyed N/A – Well DestroyedMW-14 Semi-Annual N/A N/AMW-15 Semi-Annual N/A N/AMW-16 Semi-Annual N/A N/AMW-25 Semi-Annual N/A N/AMW-26 Semi-Annual Annual AnnualMW-28 Semi-Annual Semi-Annual Semi-Annual

MW-29R Semi-Annual Annual AnnualMW-30 Semi-Annual N/A N/AMW-31 Semi-Annual Annual AnnualMW-32 Semi-Annual N/A N/AMW-33 Semi-Annual N/A N/AMW-34 Semi-Annual Annual AnnualMW-35 Semi-Annual Annual N/A Annual N/AMW-36 Semi-Annual Semi-Annual Semi-AnnualECS-4 Semi-Annual N/A N/A

ECS-5R Semi-Annual N/A N/AECS-7RR Semi-Annual Semi-Annual Semi-AnnualTW-1R Semi-Annual Semi-Annual Semi-AnnualTW-3 Semi-Annual Annual N/A Annual N/A

DMH-LD Quarterly N/A QuarterlyBoiler Room Sump Semi-Annual N/A N/A

TABLES

Well Top of Riser Depth to Depth to Depth of Thickness of Water TableIdentification Elevation Product Water Well Water in Well Elev.

MW-1 437.91 ND 5.37 10.98 5.61 432.54MW-2 437.80 ND 4.38 9.55 5.17 433.42MW-3 438.42 ND 5.74 10.11 4.37 432.68MW-4 438.28 ND 5.42 10.70 5.28 432.86MW-5 438.54 ND 5.52 11.24 5.72 433.02MW-6 436.88 ND 4.87 11.34 6.47 432.01MW-8 438.43 ND 4.96 9.15 4.19 433.47MW-9 438.56 ND 4.65 15.09 10.44 433.91MW-10 437.11 ND 5.11 11.60 6.49 432.00MW-12 435.34 ND 4.57 9.11 4.54 430.77MW-13 434.69 ND 8.41 8.41 434.69MW-14 437.16 ND 4.50 8.06 3.56 432.66MW-15 438.47 ND 5.64 13.52 7.88 432.83MW-16 438.26 ND 5.47 9.57 4.10 432.79MW-25 436.92 ND 3.43 9.09 5.66 433.49MW-26 436.70 ND 3.13 11.51 8.38 433.57MW-28 436.05 ND 2.74 9.90 7.16 433.31MW-29R 434.17 ND 5.37 9.50 4.13 428.80MW-30 438.57 ND 6.23 7.00 0.77 432.34MW-31 438.40 ND 5.77 12.50 6.73 432.63MW-32 438.44 ND 5.91 11.59 5.68 432.53MW-33 438.48 ND 5.94 9.24 3.30 432.54MW-34 434.08 ND 2.37 9.80 7.43 431.71MW-35 437.16 ND 4.79 12.95 8.16 432.37MW-36 437.86 ND 5.24 NM NM 432.62ECS-4 437.56 ND 3.17 11.43 8.26 434.39ECS-5R 438.38 ND 3.87 17.45 13.58 434.51ECS-7RR 437.45 ND 4.83 11.30 6.47 432.62TW-1R 437.26 ND 4.68 11.7 7.02 432.58TW-3 438.39 ND 5.98 11.5 5.52 432.41DMH - Load. Dock 434.40 ND NM 5.70 NM NMBoiler Rm Sump 438.70 ND NM 15.25 NM NM

The average depth to water is 4.82 feet.

NOTES

TABLE 1Connor Homes/ Former Standard Register

Middlebury, Vermont

Summary of Water Table ElevationsDecember 13, 2016

1. Elevation data is referenced to an NAVD 88 datum. Units are in feet.2. ND - not detected, NM - not measured.3. NA - not applicable.4. Measurements recorded are referenced to a marking on top of PVC riser for each well.5. Depth to fluid measurements were obtained using a Solinst water level meter.6. T.O.C. - Top of casing7. Wells surveyed on March 9, April 27, 2011, October 6, 2011, December 19, 2012, September 12, 2013, and June11, 2014.8. Average excludes the sump and the DMH in the loading dock.

B:\223088 Connor Homes\Report Tables.xlsxGWElev_Dec 2016

TABLE 2Connor Homes/ Former Standard RegisterMiddlebury, Vermont

Water Quality Monitoring Results

Factor Units

FavorableRange for

ISB

LessFavorable

Range for ISBEffect on

ISBEase of Controlling

or Overcoming MW-4 MW-5 MW-9 ECS-7RR MW-28 MW-36 TW-1RDate of Measurements 12/13/16 12/13/16 12/13/16 12/13/16 12/13/16 12/13/16 12/13/16pH unitless 5-8 <4.5 or >9 High Moderate to difficult 6.85 7.11 7.15 6.26 6.68 6.51 6.90Oxidation reduction potential mV <-50 >0 Low Moderate -189.6 -60.4 -85.2 -380.0 -237.8 -117.2 -77.9Dissolved oxygen mg/L <1 >1 Low Moderate 2.50 0.48 0.63 0.28 0.59 0.82 1.14Temperature degrees C >10 and <35 <10 and >35 Low Difficult 17.4 17.3 17.8 9.8 10.9 12.0 8.9Conductivity µs/sm3 N/A N/A N/A N/A 1,278 1,074 1,183 1,308 1,405 1,374 1,063Notes

NOTES1. Bold and shaded numbers that are highlighted indicate concentrations that are less favorable for ISB.2. NM = not measured.3. Used D.O. readings prior to well starting to go dry.

B:\223088 Connor Homes\Report Tables.xlsxGeochemistry Dec. 2016 Page 1 of 1

Lab Sample ID: MC49161-6 MC49161-5 MC49161-7 MC49161-8 MC49161-4 MC49161-3 MC49161-2 MC49161-1 MC49161-9Date Sampled: 12/13/2016 12/13/2016 12/13/2016 12/13/2016 12/13/2016 12/13/2016 12/13/2016 12/13/2016 12/1/2016

Trip Blank

Water

Acetone µg/l 700 <10 <10 <10 <10 <10 28.2 J a 28.1 J a <10 a <10Benzene µg/l 5 <0.50 <0.50 <0.50 <0.50 <0.50 2.4 2.7 0.54 <0.502-Butanone (MEK) µg/l 4,200 <10 <10 <10 <10 <10 10.2 <10 <10 <10n-Butylbenzene µg/l - <2.0 <2.0 <2.0 <2.0 <2.0 3.3 <2.0 3.3 <2.0sec-Butylbenzene µg/l - <2.0 <2.0 <2.0 <2.0 <2.0 2.6 <2.0 2.9 <2.0Chloroethane µg/l - <1.0 <1.0 <1.0 <1.0 <1.0 47.4 16.3 9.8 <1.01,1-Dichloroethane µg/l 70 <1.0 <1.0 <1.0 <1.0 <1.0 3.6 56.1 10.1 <1.01,1-Dichloroethene µg/l 7 1.2 1.6 <1.0 <1.0 <1.0 2.3 1.8 <1.0 <1.0cis-1,2-Dichloroethene µg/l 70 159 63.1 95.3 100 76.1 3.9 187 71 <1.0trans-1,2-Dichloroethene µg/l 100 170 30.3 34.7 34.9 1.1 <1.0 1.6 1.9 <1.0Ethylbenzene µg/l 700 <1.0 <1.0 <1.0 <1.0 <1.0 53.2 28.1 18.7 <1.02-Hexanone µg/l - <5.0 <5.0 <5.0 <5.0 <5.0 22.2 154 5.5 <5.0Isopropylbenzene µg/l - <1.0 <1.0 <1.0 <1.0 <1.0 9.7 5.5 6.8 <1.0p-Isopropyltoluene µg/l - <2.0 <2.0 <2.0 <2.0 <2.0 2.3 <2.0 <2.0 <2.0n-Propylbenzene µg/l - <2.0 <2.0 <2.0 <2.0 <2.0 12.4 7.1 11.5 <2.0Toluene µg/l 1,000 <1.0 <1.0 <1.0 <1.0 <1.0 91.7 64.8 6.4 <1.01,1,1-Trichloroethane µg/l 200 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 43.9 5.8 <1.0Trichloroethene µg/l 5 394 209 25.6 26.1 13.8 <1.0 1.7 <1.0 <1.0Trichlorofluoromethane µg/l 2,100 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 3.4 <2.0 <2.01,2,4-Trimethylbenzene µg/l 5 <2.0 <2.0 <2.0 <2.0 <2.0 142 76.4 92.7 <2.01,3,5-Trimethylbenzene µg/l 4 <2.0 <2.0 <2.0 <2.0 <2.0 41.5 23.1 15.7 <2.0Vinyl chloride µg/l 2 <1.0 3.1 12.8 12.3 16.1 4.7 64.8 61.7 <1.0m,p-Xylene µg/l 10,000 <1.0 <1.0 <1.0 <1.0 <1.0 259 134 27.5 <1.0o-Xylene µg/l 10,000 <1.0 <1.0 <1.0 <1.0 <1.0 163 83.9 11.2 <1.0Xylene (total) µg/l 10,000 <1.0 <1.0 <1.0 <1.0 <1.0 422 218 38.7 <1.0Total Dichloroethenes µg/l Not Established 330.2 95 130 134.9 77.2 6.2 190.4 72.9 0NOTES

Ground WaterGround Water Ground Water Ground WaterMatrix: Ground WaterGround WaterGround WaterGround Water

TABLE 3Groundwater Laboratory Analysis Results for VOCs

Connor Homes / Former Standard RegisterMiddlebury, Vermont

VT Table 1 -Primary GWStandards-

Enforcement(VTDEC 2/14/05)

Units

Client Sample ID: TW-1RESC-7RRMW-36MW-28MW-5MW-4 MW-9 DUP-1 TRIP BLANK

1. Bold and Italic numbers that are shaded orange indicate concentrations that exceed the VGES. Hits are shaded blue.2. All samples were analyzed for VOCs via US EPA Method 8260.3. '<' indicates the compound was not detected above the method detection limit indicated.4. N/A = Not applicable (sample not analyzed for this compound).a. This compound in the associated CCV is outside the 20%D limit biased high.


Sub-Slab Venting and Diffuser System Monitoring

Pre-Dilution

Air

DateVacuum

("H20)Vacuum

("H20)

Abs.Press.(atm)

DifferentialPressure("H2O)2

EstimatedAir Velocity

(fpm)3

EstimatedAir Flow(acfm)1

Vacuum("H20)

Abs.Press.(atm)



(fpm)3

EstimatedAir Flow(acfm)1

Pressure("H20)

Abs.Press.(atm)

Temp.(deg. F)



(fpm)3Abs. Temp.

(deg K)Flow

(scfm)Flow

(acfm)

PIDReading(ppmv)

Est. COCConc.

(mg/m3)4

VOCRemoval

Rate(lb/day)

EstimatedCumulative

VOCRemoval

(lbs.)12/11/12 NM 4.0 0.99 0.9 3,700 352 13.5 0.97 0.7 3,350 326 1.7 1.00 95 0.85 3,675 308 346 389 0.8 2.9 0.1 0.812/26/12 NM NM 1.00 0.8 3,600 339 NM 1.00 0.8 3,600 339 NM 1.00 93 0.85 3,675 307 346 389 0.3 1.1 0.04 1.401/04/13 NM NM 1.00 0.8 3,600 339 6.8 0.98 0.8 3,600 345 NM 1.00 95 0.85 3,675 308 346 390 1.0 3.6 0.13 2.501/10/13 4.75 5.0 0.99 0.8 3,600 343 14.75 0.96 0.8 3,600 352 4.73 1.01 100 0.85 3,675 311 346 389 0.2 0.7 0.03 2.701/16/13 3.75 4.0 0.99 0.8 3,600 342 14.0 0.97 0.8 3,600 351 5.6 1.01 96 0.85 3,675 309 346 386 0.85 3.1 0.1 3.301/23/13 4.75 5.0 0.99 0.8 3,600 343 15.0 0.96 0.8 3,600 352 5.6 1.01 94 0.85 3,675 308 346 384 4.2 15 0.5 7.001/30/13 5.1 5.4 0.99 0.8 3,600 343 15.0 0.96 0.8 3,600 352 5.5 1.01 92 0.85 3,675 306 346 383 3 10 0.3 9.302/04/13 6.0 6.0 0.99 0.8 3,600 344 14.0 0.97 0.8 3,600 351 4.8 1.01 90 0.88 3,760 305 354 391 NM 9.0 0.3 10.902/07/13 6.0 6.25 0.98 0.88 3,760 359 14.75 0.96 0.88 3,760 367 4.8 1.01 95 0.83 3,660 308 344 384 2.3 8.3 0.3 11.702/28/13 5.75 5.75 0.99 0.78 3,540 338 >15.0 0.96 0.8 3,600 352 5.4 1.01 97 0.76 3,500 309 329 368 4.8 17.3 0.6 23.803/14/13 5.75 5.75 0.99 0.78 3,540 338 >15.0 0.96 0.82 3,610 353 4.6 1.01 100 0.76 3,500 311 329 371 1.1 0.6 0.02 24.003/28/13 5.75 5.75 0.99 0.78 3,540 338 >15.0 0.96 0.82 3,610 353 4.6 1.01 100 0.80 3,600 311 339 382 1.9 1.0 0.03 24.504/08/13 5.75 6.0 0.99 0.78 3,540 338 >15.0 0.96 0.82 3,610 353 4.6 1.01 98 0.80 3,600 310 339 380 1.9 1.0 0.03 24.904/19/13 5.5 5.75 0.99 0.78 3,540 338 >15.0 0.96 0.81 3,605 352 4.6 1.01 100 0.81 3,605 311 339 382 0.4 0.2 0.007 25.005/08/13 5.75 5.8 0.99 0.8 3,600 344 >15.0 0.96 0.82 3,610 353 4.4 1.01 104 0.78 3,550 313 334 379 1.1 0.6 0.02 25.305/30/13 5.75 6.0 0.99 0.8 3,600 344 >15.0 0.96 0.82 3,610 353 4.6 1.01 104 0.78 3,550 313 334 379 0.2 0.1 0.004 25.406/07/13 NM NM NM NM NM NM NM NM NM NM NM 5.4 1.01 104 0.76 3,500 313 329 373 2.0 1.0 0.034 25.707/12/13 6.0 5.75 0.99 0.72 3,400 325 >15.0 0.96 0.82 3,610 353 4.4 1.01 106 0.78 3,550 314 334 380 0.4 0.2 0.007 25.907/29/13 6.50 6.50 0.98 0.76 3,500 335 15.0 0.96 0.78 3,540 346 4.40 1.01 105 0.76 3,500 314 329 374 0.1 0 0.0 26.007/29/13 NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM08/13/13 5.0 5.25 0.99 0.76 3,500 334 >15.0 0.96 0.78 3,540 346 5.2 1.01 110 0.75 3,470 316 327 374 NM NM NM NM08/27/13 4.8 5.0 0.99 0.75 3,470 331 >15.0 0.96 0.78 3,540 346 5.2 1.01 110 0.76 3,500 316 329 377 <0.1 0.1 0.002 26.009/12/13 5.0 5.3 0.99 0.74 3,450 329 >15.0 0.96 0.78 3,540 346 5.25 1.01 110 0.76 3,500 316 329 377 <0.1 0.1 0.002 26.009/27/13 4.75 5.0 0.99 0.78 3,540 337 >15.0 0.96 0.80 3,600 352 5.4 1.01 105 0.78 3,550 314 334 379 0.7 0.4 0.012 26.210/10/13 4.75 5.0 0.99 0.78 3,540 337 >15.0 0.96 0.80 3,600 352 5.4 1.01 100 0.78 3,550 311 334 376 1.5 0.8 0.026 26.510/28/13 4.75 5.0 0.99 0.76 3,500 333 >15.0 0.96 0.76 3,500 342 5.5 1.01 99 0.78 3,550 310 334 375 0.9 0.5 0.016 26.811/14/13 4.75 5.0 0.99 0.74 3,450 329 >15.0 0.96 0.78 3,540 346 5.4 1.01 90 0.76 3,500 305 329 364 4.7 2.4 0.08 28.211/29/13 4.75 5.0 0.99 0.74 3,450 329 >15.0 0.96 0.80 3,600 352 5.4 1.01 98 0.76 3,500 310 329 369 4.2 2.2 0.072 29.312/09/13 4.70 4.75 0.99 0.60 3,100 295 >15.0 0.96 0.73 3,425 335 3.7 1.01 100 0.70 3,350 311 315 356 4.7 2.4 0.078 30.012/26/13 4.5 4.75 0.99 0.72 3,400 324 >15.0 0.96 0.72 3,400 332 5.2 1.01 100 0.74 3,450 311 325 365 3.5 1.8 0.060 31.101/07/14 4.6 4.75 0.99 0.56 2,990 285 >15.0 0.96 0.74 3,450 337 5.5 1.01 96 0.73 3,425 309 322 360 6.1 3.2 0.10 32.301/24/14 4.5 4.80 0.99 0.68 3,300 314 14.5 0.96 0.73 3,425 334 5.4 1.01 95 0.71 3,375 308 318 354 6.6 3.4 0.11 34.102/13/14 4.25 4.25 0.99 0.54 2,940 280 13.3 0.97 0.68 3,300 321 5.20 1.01 100 0.66 3,260 311 307 345 NM NM NM NM02/27/14 4.0 4.30 0.99 0.63 3,175 302 13.1 0.97 0.64 3,210 312 5.0 1.01 104 0.65 3,230 313 304 344 0.6 0.3 0.010 34.303/06/14 4.0 4.25 0.99 0.64 3,210 305 13.5 0.97 0.68 3,300 321 5.0 1.01 100 0.68 3,300 311 311 349 25.3 13.1 0.41 37.203/24/14 4.1 4.25 0.99 0.62 3,150 300 13.1 0.97 0.65 3,225 314 5.0 1.01 102 0.65 3,225 312 304 343 1.3 0.7 0.021 37.504/02/14 4.0 4.10 0.99 0.62 3,150 299 12.8 0.97 0.64 3,210 312 4.8 1.01 110 0.64 3,210 316 302 346 1.2 0.6 0.019 37.704/21/14 4.25 4.50 0.99 0.68 3,300 314 14.0 0.97 0.70 3,350 327 5.0 1.01 100 0.70 3,350 311 315 355 2.0 1.0 0.033 38.305/09/14 4.25 4.25 0.99 0.66 3,260 310 13.75 0.97 0.68 3,300 321 5.0 1.01 105 0.68 3,300 314 311 353 1.0 0.5 0.016 38.605/31/14 4.0 4.00 0.99 0.68 3,300 314 13.0 0.97 0.68 3,300 321 5.0 1.01 NM 0.70 3,350 314 315 358 2.0 1.0 0.033 39.406/09/14 4.25 4.25 0.99 0.64 3,210 305 13.5 0.97 0.66 3,260 317 4.80 1.01 115 0.64 3,210 314 302 343 0.1 0 0.0 39.406/17/14 4.25 4.50 0.99 0.64 3,210 305 13.0 0.97 0.68 3,300 321 4.75 1.01 120 0.66 3,260 322 307 358 0.9 41 1.3 49.907/11/14 5.00 5.20 0.99 0.63 3,175 303 13.75 0.97 0.66 3,260 318 4.6 1.01 119 0.65 3,225 321 304 353 <0.1 4.6 0.14 53.407/23/14 5.20 5.25 0.99 0.60 3,100 296 13.60 0.97 0.62 3,150 307 4.5 1.01 126 0.62 3,150 325 296 349 <0.1 4.6 0.14 55.108/06/14 5.10 5.25 0.99 0.60 3,100 296 13.25 0.97 0.62 3,150 306 4.5 1.01 120 0.62 3,150 322 296 346 0.1 4.6 0.14 57.108/25/14 4.80 5.00 0.99 0.60 3,100 295 13.50 0.97 0.62 3,150 307 4.5 1.01 122 0.62 3,150 323 296 347 0.2 9.1 0.28 62.509/11/14 4.75 5.00 0.99 0.59 3,075 293 13.25 0.97 0.60 3,100 302 4.4 1.01 120 0.60 3,100 322 292 340 0.6 27.3 0.84 76.709/23/14 4.50 4.50 0.99 0.60 3,100 295 13.50 0.97 0.63 3,175 309 4.5 1.01 112 0.62 3,150 318 296 341 <0.1 4.6 0.14 78.410/09/14 4.25 4.50 0.99 0.58 3,050 290 12.50 0.97 0.60 3,100 301 4.5 1.01 112 0.60 3,100 318 292 336 <0.1 4.6 0.14 80.610/20/14 4.25 4.25 0.99 0.58 3,050 290 12.50 0.97 0.60 3,100 301 4.5 1.01 110 0.60 3,100 316 292 335 <0.1 4.6 0.14 82.111/04/14 4.50 4.75 0.99 0.60 3,100 295 13.00 0.97 0.60 3,100 301 4.5 1.01 112 0.60 3,100 318 292 336 <0.1 4.6 0.14 84.212/09/14 4.25 4.25 0.99 0.56 3,000 285 12.25 0.97 0.60 3,100 301 4.5 1.01 110 0.58 3,050 316 287 329 <0.1 4.6 0.13 88.912/18/14 4.00 4.00 0.99 0.50 2,830 269 11.00 0.97 0.52 2,890 280 4.0 1.01 114 0.54 2,940 319 277 320 0.7 2.1 0.06 89.401/09/15 3.50 3.75 0.99 0.50 2,830 269 10.50 0.97 0.52 2,890 279 4.0 1.01 118 0.52 2,890 321 272 317 0.9 2.7 0.08 91.101/22/15 3.50 3.50 0.99 0.50 2,830 269 10.50 0.97 0.52 2,890 279 4.0 1.01 112 0.52 2,890 318 272 313 3.5 10.4 0.29 95.002/16/15 3.25 3.50 0.99 0.49 2,800 266 10.00 0.98 0.50 2,830 273 3.9 1.01 110 0.51 2,850 316 268 308 1.0 3.0 0.08 97.002/26/15 3.25 3.50 0.99 0.49 2,800 266 10.00 0.98 0.48 2,770 267 3.9 1.01 112 0.50 2,830 318 266 307 1.0 3.0 0.08 97.803/13/15 3.50 3.50 0.99 0.46 2,720 258 9.50 0.98 0.47 2,750 265 3.8 1.01 118 0.49 2,800 321 264 307 0.6 1.8 0.05 98.603/27/15 4.10 4.25 0.99 0.42 2,600 247 9.90 0.98 0.42 2,600 251 3.5 1.01 128 0.42 2,600 326 245 290 0.7 2.1 0.05 99.304/02/15 4.25 4.25 0.99 0.44 2,650 252 10.50 0.97 0.43 2,625 254 3.7 1.01 121 0.45 2,680 323 252 295 0.6 1.8 0.05 99.605/04/15 4.25 4.25 0.99 0.42 2,600 247 10.00 0.98 0.44 2,650 256 3.6 1.01 132 0.45 2,680 329 252 301 0.1 0.3 0.01 99.906/17/15 4.75 5.00 0.99 0.48 2,770 264 11.50 0.97 0.50 2,830 274 3.7 1.01 129 0.49 2,800 327 264 313 <0.1 0.9 0.02 10107/02/15 5.00 5.50 0.99 0.42 2,600 248 11.50 0.97 0.47 2,750 266 3.6 1.01 134 0.49 2,800 330 264 316 0.1 0.9 0.02 10107/10/15 NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM08/11/15 5.00 5.25 0.99 0.50 2,830 270 12.50 0.97 0.50 2,830 275 3.5 1.01 127 0.49 2,800 326 264 312 NM NM NM NM09/09/15 8.25 8.50 0.98 0.70 3,350 322 >15.0 0.96 0.70 3,350 327 5.0 1.01 119 0.69 3,325 321 313 364 <0.1 0.9 0.03 102.210/21/15 7.25 7.50 0.98 0.72 3,400 326 >15.0 0.96 0.75 3,475 340 5.4 1.01 105 0.72 3,400 314 320 363 <0.1 0.9 0.03 103.411/13/15 7.40 7.60 0.98 0.72 3,400 326 >15.0 0.96 0.74 3,450 337 5.2 1.01 106 0.72 3,400 314 320 364 0.3 2.6 0.09 105.412/01/15 7.00 7.25 0.98 0.76 3,500 335 >15.0 0.96 0.74 3,450 337 5.4 1.01 99 0.74 3,450 310 325 364 1.1 8.0 0.26 110.001/12/16 5.50 5.75 0.99 0.74 3,450 329 >15.0 0.96 0.72 3,400 332 5.5 1.01 103 0.70 3,350 313 315 356 2.0 14.5 0.46 129.502/08/16 6.50 6.25 0.98 0.72 3,400 325 >15.0 0.96 0.72 3,400 332 5.4 1.01 103 0.72 3,400 313 320 362 0.4 2.9 0.09 132.103/08/16 5.50 5.75 0.99 0.72 3,400 325 >15.0 0.96 0.74 3,450 337 5.6 1.01 108 0.74 3,450 315 325 370 1.1 8.0 0.26 139.804/06/16 5.75 6.00 0.99 0.72 3,400 325 >15.0 0.96 0.74 3,450 337 4.2 1.01 104 0.74 3,450 313 325 369 0.4 2.9 0.10 142.505/13/16 5.75 5.75 0.99 0.72 3,400 325 >15.0 0.96 0.74 3,450 337 5.2 1.01 109 0.68 3,300 316 311 355 0.2 1.4 0.05 144.306/09/16 6.75 7.00 0.98 0.74 3,450 330 >15.0 0.96 0.72 3,400 332 5.0 1.01 110 0.65 3,225 316 304 348 0.2 0.9 0.03 145.007/12/16 7.50 7.75 0.98 0.74 3,450 331 >15.0 0.96 0.74 3,450 337 4.8 1.01 119 0.72 3,400 321 320 372 0.5 2.3 0.08 147.608/02/16 8.00 8.25 0.98 0.68 3,300 317 >15.0 0.96 0.72 3,400 332 4.8 1.01 118 0.70 3,350 321 315 366 0.5 2.3 0.08 149.209/14/16 7.75 8.00 0.98 0.72 3,400 326 >15.0 0.96 0.75 3,475 340 4.8 1.01 112 0.71 3,375 318 318 365 0.1 0.5 0.02 149.910/13/16 6.50 6.50 0.98 0.72 3,400 325 >15.0 0.96 0.76 3,500 342 5.0 1.01 106 0.72 3,400 314 320 364 0.2 0.9 0.03 150.711/14/16 6.25 6.50 0.98 0.72 3,400 325 >15.0 0.96 0.76 3,500 342 5.0 1.01 100 0.72 3,400 311 320 360 0.2 0.9 0.03 151.712/06/16 NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM12/21/16 6.00 6.25 0.98 0.62 3,150 301 >15.0 0.96 0.76 3,500 342 5.2 1.01 94 0.70 3,350 308 315 351 0.1 1.5 0.05 153.501/09/17 6.25 6.50 0.98 0.64 3,200 306 >15.0 0.96 0.78 3,540 346 5.4 1.01 82 0.76 3,500 301 329 358 0.1 1.5 0.05 155.1

Notes:1. No correction applied for temperature; only adjusted for pressure.2. Readings estimated from 12/26/12 through 1/30/13 based on previous and subsequent measurements.3. From Dwyer Air Velocity Calculator, assuming standard air density of 0.075 pounds per cubic foot.4. Conversion of PID readings to concentrations are based on air sample analysis results from the air stripper pilot test, and from samples collected in June 2013, June 2014, December 2014, and June 2015.5. Flow rates estimated from compressor curve (flow vs. pressure) based on pressure gauge readings.NM = Not measured.

Pre-Moisture Knockout Between Moisture Knockout and Blower Influent to Carbon

B:\223088 Connor Homes\Report Tables.xlsxVenting System Monitoring Page 1 of 2


Sub-Slab Venting and Diffuser System Monitoring

DateMid PID(ppmv)

MidPressure

("H2O)

EffluentPID

(ppmv)

West Leg AirVelocity

(fpm)

West LegAir Flow(scfm)

East Leg AirVelocity

(fpm)

East LegAir Flow(scfm)

CompressorPressure

(psi)

EstimatedCompressor

Air Flow(cfm)5

ElectricMeter(Kwh)

BoilerRoom

Sump AirVelocity

(fpm)

EstimatedAir Flow

from BoilerRoom Sump

(cfm)

PID inSump

Headspace(ppmv)

VP-1Vacuum

("H20)

VP-1PID

(ppmv)

VP-2Vacuum

("H20)

VP-2PID

(ppmv)

VP-3Vacuum

("H20)

VP-3PID

(ppmv)

VP-4Vacuum

("H20)

VP-4PID

(ppmv)

VP-5Vacuum

("H20)

VP-5PID

(ppmv)

VP-6Vacuum

("H20)

VP-6PID

(ppmv)12/11/12 1.05 NM 0.55 NM NM NM NM 2.02 27.1 197 NM 214 0.6 0.035 1.35 0.065 1.25 0.035 1.15 0.06 0.8 0.075 1.05 0.085 1.0512/26/12 0.1 NM 0.1 NM NM NM NM 3.5 26.7 852 NM 214 1.5 NM 0.1 NM 0.2 NM 0.1 NM 0.1 NM 0.2 NM 0.401/04/13 0.5 NM 0.5 NM NM NM NM 3.10 26.7 1,238 NM 215 1.8 NM 1.75 NM 0.05 NM 0.1 NM 1.25 NM 1.35 NM 1.501/10/13 1.55 2.2 0.85 830 78 1,030 97 2.9 26.8 1,499 NM 214 2.5 NM 0.8 NM 1.25 NM 1.15 NM 0.55 NM 0.75 NM 0.8501/16/13 1.05 2.1 0.8 655 62 814 77 2.62 26.9 1,770 NM 248 2.6 NM 0.3 NM 0.6 NM 0.5 NM 0.3 NM 0.4 NM 0.401/23/13 3.9 2.2 0.2 763 72 959 90 2.88 26.8 2,071 NM 222 1.8 NM 0.4 NM 0.1 NM 0.1 NM 0.5 NM 0.7 NM 1.801/30/13 2.6 2.2 0.2 1,056 99 1,346 127 2.85 26.8 2,380 NM 157 1.2 NM 0.1 NM 0.15 NM 0.1 NM 0.15 NM 0.35 NM 0.702/04/13 NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM02/07/13 3.0 2.2 0.4 NM NM NM NM 2.97 26.7 2,740 NM 214 1.1 0.10 1.15 0.12 1.25 0.07 1.15 0.04 0.65 0.045 1.0 0.04 1.0502/28/13 1.8 2.2 0.7 NM NM NM NM 2.76 26.8 3,682 NM NM 1.3 0.12 0.6 0.14 0.6 0.10 0.2 0.08 0.2 0.08 0.2 0.1 0.103/14/13 2.4 2.2 2.2 NM NM NM NM 2.76 26.8 4,325 NM NM 1.1 0.12 0.2 0.14 0.4 0.13 0.2 0.04 0.2 0.07 0.1 0.05 0.103/28/13 1.6 2.2 1.6 NM NM NM NM 2.79 26.8 4,959 NM NM 1.0 0.125 0.1 0.145 0.1 0.08 0.2 0.04 0.1 0.06 0.1 0.05 0.204/08/13 1.3 2.2 0.9 NM NM NM NM 2.79 26.8 5,466 NM NM 1.1 0.10 0.2 0.12 0.6 0.06 0.6 0.035 0.2 0.05 0.2 0.04 0.904/19/13 0.5 2.0 0.2 NM NM NM NM 2.58 26.9 5,962 NM NM 1.4 0.13 0.4 0.15 0.1 0.09 0.1 0.05 0.0 0.07 0.0 0.06 0.105/08/13 1.1 2.0 0.5 NM NM NM NM 2.66 26.9 6,842 NM NM 1.1 0.25 0.3 0.21 0.1 0.11 0.1 0.07 0.2 0.095 0.3 0.09 0.605/30/13 0.4 2.0 0.1 NM NM NM NM 1.94 27.1 7,840 NM NM 2.9 0.23 0.3 0.28 0.2 NM NM 0.09 0.2 0.13 0.3 0.12 0.206/07/13 NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM07/12/13 0.3 2.2 0.1 NM NM NM NM 2.23 27.0 9,683 NM NM 2.4 0.60 0.5 0.70 0.2 0.41 0.7 0.35 0.5 0.52 0.3 0.1 0.507/29/13 0.1 2.2 <0.1 1,560 147 1,315 124 2.22 27.0 10,592 173 16 0.3 0.85 0.1 0.96 0.1 0.48 <0.1 0.50 <0.3 0.8 0.2 0.94 <0.107/29/13 NM NM NM 1,335 126 1,120 105 NM NM NM 750 71 NM NM NM NM NM NM NM NM NM NM NM NM NM08/13/13 NM 2.2 NM 1,170 110 960 90 2.07 27.1 11,163 770 72 NM 0.62 NM 0.62 NM 0.35 NM 0.34 NM 0.56 NM 0.71 NM08/27/13 <0.1 2.2 <0.1 NM NM NM NM 2.05 27.1 11,792 NM NM 0.25 0.47 <0.1 0.60 <0.1 0.36 <0.1 0.32 <0.1 0.46 <0.1 0.65 <0.109/12/13 <0.1 2.2 <0.1 NM NM NM NM 1.56 27.3 12,514 NM NM <0.1 0.43 <0.1 0.54 <0.1 0.32 <0.1 0.37 <0.1 0.47 <0.1 0.81 <0.109/27/13 0.7 2.2 0.7 NM NM NM NM 2.16 27.0 13,191 NM NM 0.9 0.20 0.1 0.24 <0.1 0.14 <0.1 0.14 0.15 0.16 0.1 0.24 0.110/10/13 1.1 2.2 1.1 NM NM NM NM 2.20 27.0 13,508 NM NM 0.4 0.18 0.3 0.22 0.2 0.14 0.3 0.14 0.5 0.16 0.2 0.22 0.210/28/13 0.4 2.2 0.4 NM NM NM NM 2.22 27.0 13,881 NM NM 1.4 0.10 0.1 NM NM 0.08 0.2 0.07 3.9 0.08 4.0 0.10 0.411/14/13 4.4 2.2 4.4 NM NM NM NM 2.16 27.0 14,303 NM NM 2.7 0.10 2.5 0.14 1.8 0.07 2.2 0.08 2 0.11 2.2 0.12 1.011/29/13 3.3 2.2 4.5 NM NM NM NM 2.24 27.0 14,699 NM NM 0.6 0.10 1.3 0.12 1.0 0.08 0.4 0.05 0.7 0.08 0.5 0.10 1.112/09/13 4.1 2.2 4.0 NM NM NM NM 1.98 27.1 14,959 NM NM 3.7 0.09 0.5 0.12 0.6 0.07 0.8 0.06 1.0 0.08 0.9 0.08 0.812/26/13 3.0 2.2 3.0 NM NM NM NM 1.97 27.1 15,406 NM NM 0.3 0.08 0.1 0.08 0.2 0.05 0.2 0.04 0.3 0.06 0.3 0.04 0.301/07/14 5.2 2.2 5.0 NM NM NM NM 2.11 27.1 15,727 NM NM 2.9 0.06 1.8 0.07 2.3 0.03 2.2 0.03 3.0 0.05 2.5 0.04 2.501/24/14 6.4 2.2 6.3 NM NM NM NM 1.65 27.3 16,431 NM NM 4.2 0.05 2.2 NM NM 0.02 1.3 0.03 2.0 0.04 1.2 0.04 1.502/13/14 NM 2.0 NM NM NM NM NM 1.73 27.2 17,344 NM NM NM 0.05 NM NM NM 0.03 NM 0.04 NM 0.05 NM 0.04 NM02/27/14 <0.1 2.0 <0.1 NM NM NM NM 2.11 27.0 17,980 NM NM 2.9 0.05 0.8 NM NM 0.03 0.5 0.04 0.7 0.05 0.7 0.06 0.603/06/14 0.6 2.0 0.2 NM NM NM NM 1.41 27.4 18,303 NM NM 2.5 0.05 2.2 NM NM 0.04 2.0 0.04 2.4 0.04 2.1 0.05 1.603/24/14 1.3 2.0 1.3 NM NM NM NM 2.11 27.0 19,124 NM NM <0.1 0.06 0.8 NM NM 0.05 1.1 0.05 0.7 0.06 0.6 0.06 1.704/02/14 0.3 2.0 0.2 NM NM NM NM 1.67 27.3 19,540 NM NM 2.6 0.09 0.6 NM NM 0.06 1.0 0.07 0.7 0.08 0.8 0.10 0.504/21/14 0.5 1.8 0.2 NM NM NM NM 1.85 27.2 20,406 NM NM 0.3 0.10 0.7 NM NM 0.08 0.8 0.08 0.8 0.10 0.4 0.10 0.505/09/14 0.1 1.8 <0.1 NM NM NM NM 2.01 27.1 21,249 NM NM 2.1 0.12 <0.1 NM NM 0.10 0.1 0.10 0.6 0.10 0.3 0.14 0.105/31/14 0.3 2.0 <0.1 NM NM NM NM 2.65 26.9 21,593 NM NM 2.5 0.12 0.3 NM NM 0.08 <0.1 0.10 0.1 0.10 <0.1 0.08 0.206/09/14 0.1 1.8 <0.1 1,300 122 960 90 2.30 27.0 21,942 725 68 0.1 0.32 0.2 NM NM NM NM 0.30 <0.1 0.38 0.2 0.54 <0.206/17/14 0.1 1.8 <0.1 1,150 108 1,025 96 1.71 27.3 22,267 560 53 2.9 0.40 0.5 NM NM 0.26 <0.1 0.40 <0.1 0.56 0.1 0.78 <0.107/11/14 <0.1 2.7 <0.1 NM NM NM NM 2.28 27.0 23,227 NM NM <0.1 0.56 0.3 NM NM 0.20 0.2 0.48 0.3 0.70 0.4 0.95 0.207/23/14 <0.1 1.6 <0.1 NM NM NM NM 2.07 27.1 23,712 NM NM 1.3 0.83 3.2 NM NM 0.51 1.4 0.71 2.5 0.96 1.3 >1.0 0.908/06/14 0.1 1.6 <0.1 NM NM NM NM 2.25 27.0 24,277 NM NM 0.6 0.82 <0.1 NM NM 0.51 <0.1 0.67 <0.1 0.94 <0.1 >1.0 <0.108/25/14 0.2 1.6 <0.1 NM NM NM NM 2.14 27.0 25,040 NM NM 0.8 0.63 0.3 NM NM 0.42 0.3 0.54 0.3 0.93 0.3 0.97 0.309/11/14 0.6 1.6 0.3 NM NM NM NM 1.93 27.1 25,723 NM NM 0.9 0.64 0.1 NM NM 0.43 0.1 0.50 0.1 0.82 0.1 0.98 0.109/23/14 <0.1 1.8 <0.1 NM NM NM NM 2.47 26.9 26,211 NM NM <0.1 0.25 0.1 NM NM 0.18 <0.1 0.26 <0.1 0.38 <0.1 0.43 <0.110/09/14 <0.1 1.6 <0.1 NM NM NM NM 1.74 27.3 26,860 NM NM 0.2 NM NM NM NM NM NM NM NM NM NM NM NM10/20/14 <0.1 1.6 <0.1 NM NM NM NM 2.53 26.9 27,318 NM NM <0.1 0.14 0.4 NM NM 0.10 1.1 0.12 0.5 0.16 1.4 0.17 1.111/04/14 <0.1 1.5 <0.1 NM NM NM NM 2.43 26.9 27,949 NM NM 0.7 NM NM NM NM NM NM NM NM NM NM NM NM12/09/14 <0.1 2.0 <0.1 NM NM NM NM 3.18 26.7 29,401 NM NM <0.1 NM NM NM NM NM NM NM NM NM NM NM NM12/18/14 0.4 1.5 0.1 NM NM NM NM 3.51 26.7 29,768 NM NM 0.1 0.16 0.2 NM NM 0.12 0.2 0.18 <0.1 0.26 <0.1 0.29 <0.101/09/15 0.5 1.5 0.2 NM NM NM NM 2.62 26.9 30,663 NM NM 1.1 NM NM NM NM NM NM NM NM NM NM NM NM01/22/15 3.2 1.5 2.2 NM NM NM NM 2.97 26.7 30,710 NM NM <0.1 0.10 1.9 0.1 1.6 0.07 1.4 0.11 1.5 0.16 1.4 0.14 1.802/16/15 0.8 1.5 0.6 NM NM NM NM 2.16 27.0 30,791 NM NM 1.2 NM NM NM NM NM NM NM NM NM NM NM NM02/26/15 0.8 1.4 0.6 NM NM NM NM 1.48 27.3 31,172 NM NM 0.6 0.10 1.1 0.1 0.9 0.90 1.0 0.90 1.2 0.10 1.1 0.12 1.003/13/15 0.5 1.5 0.3 766 72 671 63 1.75 27.3 31,784 470 44 1.2 0.15 0.1 0.09 0.3 0.10 0.2 0.12 0.8 0.10 0.4 0.10 0.603/27/15 0.7 0.8 0.5 972 91 850 80 1.24 27.4 32,372 0 0 0.2 0.21 0.5 0.20 0.2 0.18 0.1 0.19 0.6 0.24 0.6 0.20 0.504/02/15 0.5 1.5 0.4 NM NM NM NM 2.84 26.8 32,613 NM NM 2.4 NM NM NM NM NM NM NM NM NM NM NM NM05/04/15 0.1 1.2 0.1 NM NM NM NM 2.30 27.0 33,952 NM NM 1.4 0.32 0.2 0.3 0.3 0.26 0.2 0.38 0.3 0.50 0.2 0.46 0.206/17/15 0.1 1.4 <0.1 NM NM NM NM 2.01 27.1 35,773 NM NM NM 0.55 0.3 0.49 0.1 0.42 0.1 0.52 0.2 0.80 0.2 0.89 0.207/02/15 0.1 1.3 <0.1 NM NM NM NM 1.21 27.4 36,394 NM NM 1.7 0.78 0.3 0.70 0.1 0.59 0.1 0.71 0.3 0.93 0.1 0.95 0.107/10/15 NM NM NM NM NM NM NM 1.38 27.4 36,733 NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM08/11/15 NM 1.3 NM NM NM NM NM 2.60 26.9 38,070 NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM09/09/15 <0.1 2.0 <0.1 NM NM NM NM 1.35 27.4 39,301 NM NM <0.1 0.94 <0.1 0.94 <0.1 NM NM 1.2 <0.1 0.99 <0.1 0.93 <0.110/21/15 <0.1 2.1 <0.1 NM NM NM NM 4.37 26.5 40,173 NM NM <0.1 0.49 1.2 0.49 1.6 NM NM 0.49 1.3 NM NM 0.68 1.711/13/15 0.3 2.0 <0.1 NM NM NM NM NM NM 41,098 NM NM 0.1 0.72 <0.1 0.68 <0.1 NM NM 0.59 0.8 0.92 0.7 0.92 0.212/01/15 0.8 2.1 <0.7 1,080 102 1,091 103 1.78 27.3 41,761 349 33 <0.1 0.30 1.1 0.31 2.0 0.26 1.9 0.36 1.0 0.37 0.8 0.28 1.001/12/16 1.5 2.0 1.0 NM NM NM NM 2.13 27.0 43,338 NM NM 0.3 0.22 3.1 0.24 2.8 0.29 2.5 0.38 2.0 0.52 3.8 0.55 3.502/08/16 0.3 2.0 0.1 NM NM NM NM 2.92 26.8 44,341 NM NM 1.1 0.90 0.2 0.2 2.1 NM NM 0.40 1.3 0.38 1.5 0.40 2.503/08/16 1.1 2.2 0.8 NM NM NM NM 1.74 27.3 45,455 NM NM 1.7 0.26 1.2 0.26 1.3 0.22 1.3 0.24 1.2 0.24 1.2 0.26 1.304/06/16 <0.1 2.1 0.1 NM NM NM NM 1.53 27.3 46,570 NM NM 0.6 0.36 1.5 0.34 1.9 0.34 1.8 0.68 0.5 0.68 0.8 0.70 1.605/13/16 <0.1 2.2 <0.1 NM NM NM NM 2.33 27.0 47,994 NM NM 0.2 0.52 0.0 0.5 0.1 0.46 <0.1 0.79 0.1 0.82 0.2 0.86 0.006/09/16 <0.1 2.0 <0.1 NM NM NM NM 3.02 26.8 49,059 NM NM 0.5 0.72 0.1 0.68 0.1 0.62 <0.1 0.90 0.3 0.98 0.9 1.0 0.707/12/16 0.2 2.0 0.1 NM NM NM NM 1.68 26.3 50,376 NM NM 0.8 0.92 0.3 0.92 0.9 0.90 1.0 0.99 0.8 1.0 0.8 1.0 1.008/02/16 0.1 2.0 0.1 NM NM NM NM 1.86 26.3 51,202 NM NM 0.3 0.97 0.6 0.97 1.5 NM NM 1.0 1.0 1.0 1.3 1.0 1.609/14/16 <0.1 2.0 <0.1 NM NM NM NM 1.93 26.3 52,910 NM NM 0.1 0.94 <0.1 0.92 <0.1 0.92 <0.1 1.0 <0.1 1.0 <0.1 NM NM10/13/16 0.1 2.0 0.1 NM NM NM NM 1.83 26.3 54,067 NM NM <0.1 0.54 0.9 0.5 <0.1 0.28 0.1 0.78 0.1 0.84 0.1 NM NM11/14/16 0.1 2.0 0.1 NM NM NM NM 1.45 27.3 55,373 NM NM <0.1 0.26 0.8 0.26 1.2 0.24 1.0 0.46 1.2 0.62 1.0 NM NM12/06/16 NM NM NM NM NM NM NM NM NM 56,035 NM NM NM NM NM NM NM NM NM NM NM NM NM NM NM12/21/16 0.1 2.0 <0.1 NM NM NM NM 1.60 26.8 56,035 NM NM <0.0 0.12 0.6 NM NM 0.12 0.5 0.16 0.5 0.22 0.6 NM NM01/09/17 0.1 2.0 0.1 NM NM NM NM 1.78 27.3 56,035 NM NM <1.0 0.04 0.2 0.04 0.1 0.04 0.2 0.06 0.2 0.08 0.2 NM NM

Notes:1. No correction applied for temperature; only adjusted for pressure.2. Readings estimated from 12/26/12 through 1/30/13 based on previous and subsequent measurements.3. From Dwyer Air Velocity Calculator, assuming standard air density of 0.075 pounds per cubic foot.4. Conversion of PID readings to concentrations are based on air sample analysis results from the air stripper pilot test, and from samples collected in June 2013, June 2014, December 2014, and June 2015.5. Flow rates estimated from compressor curve (flow vs. pressure) based on pressure gauge readings.NM = Not measured.

Diffuser System Vapor Monitoring PointsSub-Slab Vent LegsCarbon Treatment

B:\223088 Connor Homes\Report Tables.xlsxVenting System Monitoring Page 2 of 2

DatePrecipitation

(inches)1

CounterReading(hours)

Estimated VolumePumped for Interval

(gallons)2

AverageDaily Flow

(gpd)

ElectricalMeter

Reading(KwH)

Discharge FlowTotalizerReading(gallons)

VolumePumped for

Interval(gallons)

Average DailyFlow (gpd)


Middlebury, VermontLiquid Treatment System Monitoring

Original Boiler Room Sump Pump Fractionation Tanks Discharge Pump

7/1/2016 0.387/2/2016 0.007/3/2016 0.007/4/2016 0.007/5/2016 0.007/6/2016 0.007/7/2016 0.447/8/2016 0.007/9/2016 0.537/10/2016 0.077/11/2016 0.007/12/2016 0.00 223.7 15,456 4687/13/2016 0.117/14/2016 0.927/15/2016 0.007/16/2016 0.007/17/2016 0.007/18/2016 0.007/19/2016 0.007/20/2016 0.007/21/2016 0.007/22/2016 0.007/23/2016 0.107/24/2016 0.007/25/2016 0.007/26/2016 0.007/27/2016 0.007/28/2016 0.007/29/2016 0.007/30/2016 0.007/31/2016 0.00

2.5515,456 515

RAINFALLTOTAL

(inches) =

MONTHLY TOTAL (gallons),AVERAGE (gallons per day) =

B:\223088 Connor Homes\Report Tables.xlsxStormwater Monitoring Page 1 of 6

DatePrecipitation

(inches)1



(gallons)2

AverageDaily Flow

(gpd)

ElectricalMeter

Reading(KwH)


VolumePumped for

Interval(gallons)





8/1/2016 0.198/2/2016 0.00 226.2 11,040 5268/3/2016 0.008/4/2016 0.008/5/2016 0.008/6/2016 0.008/7/2016 0.008/8/2016 0.008/9/2016 0.008/10/2016 0.038/11/2016 0.008/12/2016 0.018/13/2016 0.868/14/2016 0.228/15/2016 0.008/16/2016 0.568/17/2016 0.438/18/2016 0.008/19/2016 0.008/20/2016 0.008/21/2016 0.508/22/2016 0.158/23/2016 0.048/24/2016 0.008/25/2016 0.008/26/2016 0.158/27/2016 0.038/28/2016 0.028/29/2016 0.008/30/2016 0.008/31/2016 0.15

3.3411,040 356

RAINFALLTOTAL

(inches) =



DatePrecipitation

(inches)1



(gallons)2

AverageDaily Flow

(gpd)

ElectricalMeter

Reading(KwH)


VolumePumped for

Interval(gallons)





9/1/2016 0.009/2/2016 0.009/3/2016 0.009/4/2016 0.009/5/2016 0.009/6/2016 0.009/7/2016 0.009/8/2016 0.079/9/2016 0.009/10/2016 0.009/11/2016 0.199/12/2016 0.019/13/2016 0.009/14/2016 0.00 228.8 11,482 2679/15/2016 0.009/16/2016 0.009/17/2016 0.029/18/2016 0.089/19/2016 0.019/20/2016 0.019/21/2016 0.009/22/2016 0.009/23/2016 0.019/24/2016 0.009/25/2016 0.019/26/2016 0.019/27/2016 0.009/28/2016 0.009/29/2016 0.019/30/2016 0.00

0.4311,482 383

RAINFALLTOTAL

(inches) =



DatePrecipitation

(inches)1



(gallons)2

AverageDaily Flow

(gpd)

ElectricalMeter

Reading(KwH)


VolumePumped for

Interval(gallons)





10/1/2016 0.0010/2/2016 0.0010/3/2016 0.0110/4/2016 0.0010/5/2016 0.0010/6/2016 0.0010/7/2016 0.0010/8/2016 0.0010/9/2016 0.00

10/10/2016 0.0010/11/2016 0.0010/12/2016 0.0010/13/2016 0.11 229.7 3,974 13710/14/2016 0.0010/15/2016 0.0010/16/2016 0.0210/17/2016 0.0810/18/2016 0.0110/19/2016 0.0010/20/2016 0.1210/21/2016 0.3510/22/2016 0.5510/23/2016 0.1810/24/2016 0.0010/25/2016 0.0010/26/2016 0.0010/27/2016 0.3410/28/2016 0.2010/29/2016 0.0510/30/2016 0.0010/31/2016 0.00

2.023,974 128

RAINFALLTOTAL

(inches) =



DatePrecipitation

(inches)1



(gallons)2

AverageDaily Flow

(gpd)

ElectricalMeter

Reading(KwH)


VolumePumped for

Interval(gallons)





11/1/2016 0.0011/2/2016 0.0011/3/2016 0.6411/4/2016 0.0611/5/2016 0.0611/6/2016 0.0011/7/2016 0.0011/8/2016 0.0011/9/2016 0.04

11/10/2016 0.0011/11/2016 0.0111/12/2016 0.0011/13/2016 0.0011/14/2016 0.00 231 5,741 17911/15/2016 0.2311/16/2016 0.0611/17/2016 0.0111/18/2016 0.0011/19/2016 0.0111/20/2016 0.4311/21/2016 0.0111/22/2016 0.00 231.8 3,533 44211/23/2016 0.0111/24/2016 0.0011/25/2016 0.1511/26/2016 0.0311/27/2016 0.0011/28/2016 0.0011/29/2016 0.4811/30/2016 0.03

2.269,274 309

RAINFALLTOTAL

(inches) =



DatePrecipitation

(inches)1



(gallons)2

AverageDaily Flow

(gpd)

ElectricalMeter

Reading(KwH)


VolumePumped for

Interval(gallons)





12/1/2016 0.4112/2/2016 0.0812/3/2016 0.0112/4/2016 0.0012/5/2016 0.0412/6/2016 0.06 234.6 12,365 88312/7/2016 0.1112/8/2016 0.0012/9/2016 0.00

12/10/2016 0.0012/11/2016 0.0012/12/2016 0.0312/13/2016 0.0012/14/2016 0.0012/15/2016 0.0012/16/2016 0.0012/17/2016 0.0012/18/2016 0.7212/19/2016 0.0012/20/2016 0.0012/21/2016 0.00 237 10,598 70712/22/2016 0.0312/23/2016 0.0712/24/2016 0.0212/25/2016 0.0012/26/2016 0.0412/27/2016 0.0612/28/2016 0.0012/29/2016 0.0012/30/2016 0.0312/31/2016 0.00

1.7122,963 741

RAINFALLTOTAL

(inches) =



CompoundEPA Risk Based

Screening Level forIndustrial Air

Table C.7 VIScreening ValueTarget Indoor Air

West Sink Area(µg/m 3)

East Sink Area(µg/m 3)

Outside Break Room(Ambient Outdoor Air)

(µg/m 3)

West SinkArea (µg/m 3)

ProductionArea (µg/m 3)

Office Area(µg/m 3)

Production Area(µg/m3)

Office Area(µg/m3)

















AmbientOutdoor Air

(µg/m 3)

(µg/m3) (µg/m3)9 3/16/11 3/16/11 3/16/11 4/21/11 9/22/12 9/22/12 12/16/12 12/16/12 6/7/13 6/7/13 6/17/14 6/17/14 10/5/14 10/5/14 12/21/14 12/21/14 12/6/15 12/6/15 6/19/16 6/19/16 12/18/16 12/18/16 6/14/15 6/14/15 6/14/15

Dichlorodif luromethane (Freon12) 440 200 Not Analyzed Not Analyzed Not Analyzed Not Analyzed ND <7.2 3.6 Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed 4.7 3.2 3.1 2.8 2.9 2.5 Not Analyzed Not Analyzed Not Analyzed

Freon 22 Not Established Not Established Not Analyzed Not Analyzed Not Analyzed Not Analyzed 33 3.0 Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzedn-Butane Not Established Not Established Not Analyzed Not Analyzed Not Analyzed Not Analyzed 89 9.5 Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not AnalyzedTrichlorofluoromethane (Freon11) Not Established 562 Not Analyzed Not Analyzed Not Analyzed Not Analyzed 10 52 Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed 29 81 17 21 14 15 Not Analyzed Not Analyzed Not Analyzed

Acetone 140,000 315 Not Analyzed Not Analyzed Not Analyzed Not Analyzed 210 34 Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not AnalyzedMethyl Ethyl Ketone (2-Butanone) 22,000 5,000 Not Analyzed Not Analyzed Not Analyzed Not Analyzed 4.5 3.1 Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not AnalyzedVinyl Chloride 2.8 0.11 <0.20 <0.20 <0.20 <0.20 <0.20 <0.20 <0.20 <0.20 <0.20 <0.20 <0.20 <0.20 <0.20 <0.20 <0.20 <0.20 <0.51 <0.51 <0.51 <0.51 <0.51 < 0 .51 1.6 <1.0 <0.20cis-1,2-Dichloroethene Not Established Not Established 0.56 0.49 <0.16 0.57 15 1.2 0.19 <0.16 1.5 0.35 0.59 <0.16 <0.16 <0.16 <0.16 <0.16 0.48 <0.79 <0.79 <0.79 <0.79 < 0.79 5.6 3.7 <0.16trans-1,2-Dichloroethene Not Established Not Established <0.16 <0.16 <0.16 <0.16 <2.3 <0.79 <0.16 <0.16 <0.16 <0.16 16 2.5 0.65 <0.16 0.75 <0.16 1.3 <0.79 <0.79 <0.79 <0.79 < 0.80 4.1 1.9 <0.16

1,2-Dichloroethene (total) Not Established Not Established 0.56 0.49 <0.16 0.57 15 1.2 0.19 <0.16 1.5 0.35 17 2.6 0.65 <0.16 0.75 <0.16 1.78 <0.79 <0.79 <0.79 Not Analyzed Not Analyzed 9.7 5.6 <0.16n-Heptane Not Established Not Established Not Analyzed Not Analyzed Not Analyzed Not Analyzed 28 3.8 Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed

Trichloroethene 3.0 0.5 2.4 2.0 <0.21 1.6 8.8 1.6 0.62 <0.21 <0.21 <0.21 0.85 0.21 <0.21 <0.21 <0.21 0.28 0.59 <.21 <.21 <.21 0.23 0.27 <1.5 <1.1 <0.21

Tetrachloroethene 47 0.57 <0.27 <0.27 <0.27 <0.27 <3.9 <1.4 <0.27 <0.27 <0.27 <0.27 0.82 <0.27 <0.27 <0.27 <0.27 <0.27 6.0 4.5 8.8 3.9 4.3 1.8 110 72 <0.27

Toluene 22,000 300 Not Analyzed Not Analyzed Not Analyzed Not Analyzed 17 4.0 Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed

m,p-Xylene 440 100 (for Total) Not Analyzed Not Analyzed Not Analyzed Not Analyzed 9.8 1.1 Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed

o-Xylene 440 100 (for Total) Not Analyzed Not Analyzed Not Analyzed Not Analyzed 3.3 5.0 Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed

Xylene (total) 440 100 Not Analyzed Not Analyzed Not Analyzed Not Analyzed 13 7.0 Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed

Chloromethane 390 90 Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed 2.1 1.9 1.0 0.83 Not Analyzed Not Analyzed Not Analyzed

Methylene Chloride 1200 2.1 Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed 10 0.66 1.5 0.76 Not Analyzed Not Analyzed Not Analyzed

4-Ethyltoluene Not Established Not Established Not Analyzed Not Analyzed Not Analyzed Not Analyzed ND <2.9 1.3 Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed

1,3,5-Trimethylbenzene Not Established Not Established Not Analyzed Not Analyzed Not Analyzed Not Analyzed ND <2.9 1.3 Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed

1,2,4-Trimethylbenzene 31 Not Established Not Analyzed Not Analyzed Not Analyzed Not Analyzed 4.8 3.8 Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed Not Analyzed

NOTES

Test Shutdown of Vent System


Middlebury, Vermont

Pre-Excavation

Air Sample Analysis Results

Post Excavation

1. Air samples were all collected using Summa canisters (supplied by the laboratory) equipped with laboratory-calibrated regulators to fi l l the canisters over approximately an 8-hour work shift.2. Starting, interim, and ending vacuum levels for each canister were observed and noted. All canisters ended with acceptable negative pressure.3. Sample times were recorded for all samples.4. Canisters were set on bases so that the air inlets were approximately 3.5 to 5 feet above grade/floor.5. Sink area canisters were placed in areas where chlorinated solvents have been detected in groundwater (beneath the slab), in the vicinity of drains that penetrate the concrete floor, near sinks wheresolvents were reportedly handled during Standard Register's occupancy of the building.6. The outdoor canister was placed outside the break room on the west end of the building.7. Analysis includes chlorinated solvents only unless otherwise noted.8. VT Screening value shown for 1,2 dichloroethene (total) is the screening value for trans-1.2-dichloroethene.9. From Vermont DEC Investigation and Remediation of Contaminated Properties Procedure.10. Yellow shaded results indicate values that exceed VT Screening Values for Indoor Air; Orange shaded results indicate values that also exceed the EPA RSL for Industrial Air.

B:\223088 Connor Homes\Report Tables.xlsxAir_Sampling Results

Date

Near FormerWaste Storage

ShedFloor DrainsSource Area

Between MainBuilding and

Route 7

Near FormerSanitary SewageTreatment Plant

1/30/2012 0.060 0.0073 0.029 0.0465/24/2012 0.071 0.01 0.0090 0.0287/19/2012 0.034 0.0059 0.027 0.1412/4/2012 0.030 Negligible 0.078 0.0566/4/2013 0.031 0.0062 0.053 0.0197/11/2014 0.044 0.037 0.05612/17/2014 0.024 0.0013 0.032 0.0186/11/2014 0.039 0.0075 0.04312/8/2015 0.012 0.0091 0.0396/20/2016 0.038 0.0099 0.03512/13/2016 0.054 0.005 0.057

MIN 0.012 0.0013 0.0090 0.018MAX 0.071 0.010 0.078 0.14

AVERAGE 0.040 0.0072 0.040 0.052

Hydraulic Gradients


Middlebury, Vermont

FIGURES

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28 NORTH MAIN ST.RANDOLPH, VT 05060

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SPRINGFIELD, VTBEDFORD, NHLACONIA, NH


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CONNOR HOMES1741 ROUTE 7 S

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VINYL CHLORIDEDISTRIBUTION

SITE PLAN

5

APPENDIX A

3/1/2011 9/16/2011 1/30/2012 4/24/2012 7/19/2012 12/12/2012 6/4/2013 9/20/2013 6/11/2014 12/17/2014

bromodichloromethane <10 9.1 <5.0 <5.0 <1.0 <5.0 <2.0 <2.0 <2.0dichlorodifluoromethane <10 <2 <10 <10.0 <2.0 <10.0 <4.0 <4.0 <4.01,1-dichloroethane <5 <1 <5.0 <5.0 <1.0 <5.0 <2.0 <2.0 <2.01,1-dichloroethene <5 2.4 <5.0 <5.0 2.3 <5.0 2.5 <2.0 <2.0cis-1,2-dichloroethene 150 131 123 118 165 128 201 220 164trans-1,2-dichloroethene 220 206 176 150 230 145 305 292 238trichloroethene 1,300 839 917 925 865 622 783 547 525trichlorofluoromethane <10 <1 <5.0 <5.0 <1.0 <5.0 <2.0 <2.0 <2.0vinyl chloride <10 <1 <5.0 <5.0 <1.0 <5.0 <2.0 <2.0 <2.0

Total COC 1,670 1,188 1,216 1,193 1,262 895 1,292 1,059 927DTW -3.70 -3.85 -4.44 -4.88 -5.25 -4.22 -4.55 -5.90 -5.29 -4.02DCEs Percentage of COCs 22% 29% 25% 22% 31% 31% 39% 48% 43%VC Percentage of COCs 0% 0% 0% 0% 0% 0% 0% 0% 0%ORP (mV) 142.5 44.1 29.5 -127.7 55.2 51.4 191 107.6dissolved oxygen (mg/L) 4.40 0.63 0.63 0.38 0.99 6.56 5.96 1.66temperature (deg. C) 18.15 15.93 15.73 16.9 16.3 18.4 17.1 16.7

6/11/2015 12/8/2015 6/20/2016 12/13/2016

bromodichloromethane <1.0 <1.0 <1.0 <1.0dichlorodifluoromethane <2.0 <2.0 7.6 <2.01,1-dichloroethane <1.0 <1.0 <1.0 <1.01,1-dichloroethene <1.0 2.3 2.5 1cis-1,2-dichloroethene 87.8 197 196 159trans-1,2-dichloroethene 123 262 310 170trichloroethene 206 451 401 394trichlorofluoromethane <1.0 <1.0 <1.0 <1.0vinyl chloride <1.0 <1.0 1.7 <1.0

Total COC 417 912 919 724DTW -4.92 -5.10 -5.84 -5.42DCEs Percentage of COCs 51% 51% 55% 46%VC Percentage of COCs 0% 0% 0.2% 0%ORP (mV) 76.6 -134.7 84.7 -189.6dissolved oxygen (mg/L) 1.83 0.99 1.40 2.50temperature (deg. C) 16.63 17.2 17.3 17.4

Notes: 1. Samples tested using EPA Method 8260. 2. Concentrations are in units of micrograms-per-liter (ug/l) or parts-per-billion (ppb). 3. DTW - Depth to water measured as referenced to the top of PVC riser. 4. <# - Compound not detected above method detection limit. Summation in spreadsheet yields 0; however, actual concentration may be between zero and the method detection limit. nt - not tested. ns - not sampled. COC - contaminants of concern.

Connor HomesGroundwater Quality and Elevation Trend Analysis

MW-4

-6.00

-5.00

-4.00

-3.00

-2.00

-1.00

0.00

1

10

100

1,000

10,000

3/1/2011 7/1/2011 11/1/2011 3/1/2012 7/1/2012 11/1/2012 3/1/2013 7/1/2013 11/1/2013 3/1/2014 7/1/2014 11/1/2014 3/1/2015 7/1/2015 11/1/2015 3/1/2016 7/1/2016 11/1/2016

Depth

toW

ater(feet)C

once

ntra

tion

(ug/

l)

Datecis-1,2-DCE TCE TCE VGES trans-1,2-DCE trans-1,2-DCE VGES cis-1,2-DCE VGES DTW

B:\223088 Connor Homes\Water Quality and Elevation Trends.xlsx

3/1/2011 9/16/2011 1/30/2012 4/25/2012 7/19/2012 12/12/2012 6/4/2013 9/20/2013 6/11/2014 12/17/2014

bromodichloromethane <2 2.4 <1.0 <1.0 <1.0 3.3 <1.0 <1.0 <1.0dichlorodifluoromethane <2 <2 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.01,1-dichloroethane <1 <2 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.01,1-dichloroethene <1 1.2 <1.0 <1.0 <1.0 <1.0 <1.0 2.2 <1.0cis-1,2-dichloroethene 39 36 43.1 33.7 35.6 49.5 47.5 68.2 42trans-1,2-dichloroethene 5 5 6.5 4.8 5.6 8.4 3.5 22.4 16.4naphthalene <5 <5 <5.0 <5.0 <5.0 <5.0 17.3 <5.0 <10trichloroethene 260 254 301 253 238 318 119 377 415trichlorofluoromethane 6 5.4 6.2 4.8 3.7 5.1 <1.0 3.7 <2.0vinyl chloride 4 2.8 2.7 <1.0 3.1 6 3.1 9.1 4

Total COC 314 307 360 296 286 390 190 483 477DTW -3.70 -3.26 -3.82 -4.02 -5.87 -4.50 -4.55 -5.71 -5.30 -4.10DCEs Percentage of COCs 14% 14% 14% 13% 14% 15% 27% 19% 12%VC Percentage of COCs 1.3% 0.9% 0.8% 0% 1.1% 1.5% 1.6% 1.9% 0.8%ORP (mV) 32.5 57.7 25.4 -122.3 -19.0 -50.8 -21.9 21.0dissolved oxygen (mg/L) 3.38 0.3 0.47 0.38 0.50 3.25 0.43 0.43temperature (deg. C) 18.28 16.1 15.89 17 16.5 17.9 16.9 16.5

6/11/2015 12/8/2015 6/20/2016 12/13/2016

bromodichloromethane <1.0 <1.0 <1.0 <1.0dichlorodifluoromethane <2.0 <2.0 6.7 <1.01,1-dichloroethane <1.0 <1.0 <1.1 <1.01,1-dichloroethene 1.7 2.0 1.9 1.6cis-1,2-dichloroethene 51.9 59 71.5 63.1trans-1,2-dichloroethene 28.4 26 44.9 30.3naphthalene <5.0 <5.0 <5.0 <5.0trichloroethene 353 377 330 209trichlorofluoromethane 1.5 1.8 1.5 <2.0vinyl chloride 4.4 5.1 8.1 3.1

Total COC 441 470 465 307DTW -5.05 -5.30 -5.67 -5.52DCEs Percentage of COCs 19% 18% 25% 31%VC Percentage of COCs 1.0% 1.1% 1.7% 1.0%ORP (mV) 61.7 -197.6 13.4 -60.4dissolved oxygen (mg/L) 1.59 0.44 1.03 0.48temperature (deg. C) 17.16 17.1 17.7 17.3



MW-5

-6.00

-5.00

-4.00

-3.00

-2.00

-1.00

0.00

1

10

100

1,000

3/1/2011 7/1/2011 11/1/2011 3/1/2012 7/1/2012 11/1/2012 3/1/2013 7/1/2013 11/1/2013 3/1/2014 7/1/2014 11/1/2014 3/1/2015 7/1/2015 11/1/2015 3/1/2016 7/1/2016 11/1/2016

Depth

toW

ater(feet)

Con

cent

ratio

n(u

g/l)

Datecis-1,2-DCE TCE TCE VGES cis-1,2-DCE VGES vinyl chloride vinyl chloride VGES DTW


3/15/2011 9/16/2011 1/30/2012 4/25/2012 7/19/2012 12/12/2012 6/4/2013 9/20/2013 6/11/2014 12/17/2014

acetone <5.0 <5.0 <5.0 <5.0 96.6 30 <10 <10 <10bromodichloromethane <2 <1 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.02-butanone (MEK) <5.0 <5.0 <5.0 <5.0 50.1 <5.0 <5.0 <5.0 <5.0dichlorodifluoromethane 11 7.5 7.3 <2.0 <2.0 3.4 <2.0 4.4 2.51,1-dichloroethane <1 <1 <1.0 6.4 <1.0 <1.0 <1.0 <1.0 <1.01,1-dichloroethene <1 <1 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0cis-1,2-dichloroethene 120 87 102 87.4 77.5 66.9 48.4 88.4 57.7trans-1,2-dichloroethene 29 22 25.2 19.1 16 15.2 19.4 26.3 22.1naphthalene <5 <5 <5.0 <5.0 <5.0 <5.0 17.3 <5.0 <5.0trichloroethene 77 53 65.8 56.3 42.7 20.3 15.6 31.5 20.1trichlorofluoromethane <2 <1 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0vinyl chloride <2 <1 <1.0 <1.0 1.1 3.6 2.9 5.8 5.5

Total COC 237 170 200 169 284 140 104 156 108DTW -2.51 -3.19 -3.80 -3.86 -4.69 -3.23 -3.55 -6.15 -4.37 -2.83DCEs Percentage of COCs 63% 64% 64% 63% 33% 59% 65% 73% 74%VC Percentage of COCs 0% 0% 0% 0% 0.4% 2.6% 2.8% 3.7% 5.1%ORP (mV) 93.1 56.1 29.0 -232.3 -123.2 -117.9 -163.2 -86.4dissolved oxygen (mg/L) 3.00 0.41 0.50 0.28 0.55 0.38 0.40 0.28temperature (deg. C) 18.19 16.64 16.32 17.1 16.9 17.8 17.5 17.3

6/11/2015 12/8/2015 6/20/2016 12/13/2016

acetone <10 <10 <10 <10bromodichloromethane <1.0 <1.0 <1.0 <1.02-butanone (MEK) <5.0 <10 <10 <10dichlorodifluoromethane <2.0 3.4 6.7 <2.01,1-dichloroethane <1.0 <1.0 <1.0 <1.01,1-dichloroethene <1.0 <1.0 <1.0 <1.0cis-1,2-dichloroethene 91.3 45 88.3 95.3trans-1,2-dichloroethene 30.8 28 36.1 34.7naphthalene <5.0 <5.0 <5.0 <5.0trichloroethene 27.8 20.5 23.4 25.6trichlorofluoromethane <1.0 <1.0 <1.0 <2.0vinyl chloride 7.7 14.6 37.5 12.8

Total COC 158 112 192 168DTW -3.60 -4.20 -4.99 -4.65DCEs Percentage of COCs 77% 66% 65% 77%VC Percentage of COCs 4.9% 13% 20% 8%ORP (mV) -66.7 -218.6 -150.4 -85.2dissolved oxygen (mg/L) 1.52 0.40 0.80 0.63temperature (deg. C) 17.60 17.1 18.1 17.8



MW-9

-7.00

-6.00

-5.00

-4.00

-3.00

-2.00

-1.00

0.00

1

10

100

1,000

3/1/2011 7/1/2011 11/1/2011 3/1/2012 7/1/2012 11/1/2012 3/1/2013 7/1/2013 11/1/2013 3/1/2014 7/1/2014 11/1/2014 3/1/2015 7/1/2015 11/1/2015 3/1/2016 7/1/2016 11/1/2016

Depth

toW

ater(feet)C

once

ntra

tion

(ug/

l)

Datecis-1,2-DCE TCE TCE VGES cis-1,2-DCE VGESvinyl chloride vinyl chloride VGES DTW


10/7/2011 1/30/2012 4/24/2012 7/19/2012 12/12/2012 6/4/2013 6/12/2014 12/18/2014 6/11/2015 12/8/2015

bromodichloromethane <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0chloromethane <2.0 <2.0 <2.0 <2.0 <2.0 14 <2.0 <2.0 <4.0dichlorodifluoromethane <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <4.01,1-dichloroethane <1.0 <1.0 <1.0 <1.0 1.4 1.2 <1.0 <1.0 <2.01,1-dichloroethene <1.0 2.0 2.0 5.4 9.3 6.6 2.8 1.5 <2.0cis-1,2-dichloroethene 105 165 121 358 522 348 226 103 77.1trans-1,2-dichloroethene <1.0 1.7 <1.0 3.2 5.1 4.2 2.2 2.1 <2.0trichloroethene 15.9 26.6 25.9 60.4 91.2 82.3 53.1 35.6 7.4trichlorofluoromethane <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0vinyl chloride 38.2 43.9 41.2 69.1 189 127 40.7 24 13.2xylene (total) <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 1.3 <1.0 <2.0

Total COC 159 239 190 496 818 583 326 166 98DTW -1.13 -1.70 -0.30 -1.71 -2.61 -2.55 -2.97 -1.32 -2.55 -2.78DCEs Percentage of COCs 66% 71% 65% 74% 66% 62% 71% 64% 79%VC Percentage of COCs 24% 18% 22% 14% 23% 22% 12% 14% 14%ORP (mV) 4.0 79.0 27.2 54.4 2.2 46.7 32.1 25.1 -196.6dissolved oxygen (mg/L) 0.28 0.58 0.73 0.4 0.25 0.22 0.75 0.78 1.99temperature (deg. C) 18.12 9.04 10.57 10.6 13.7 12.2 9.5 14.89 11.7

6/20/2016 12/13/2016

bromodichloromethane <1.0 <1.0chloromethane <2.0 <2.0dichlorodifluoromethane <2.0 <2.01,1-dichloroethane <1.0 <1.01,1-dichloroethene 3.2 <1.0cis-1,2-dichloroethene 215 76.1trans-1,2-dichloroethene 3.7 1.1trichloroethene 19.7 13.8trichlorofluoromethane <1.0 <2.0vinyl chloride 151 16.1xylene (total) <1.0 <1.0

Total COC 393 107DTW -2.83 -2.74DCEs Percentage of COCs 57% 72%VC Percentage of COCs 38% 15%ORP (mV) -169.9 -237.8dissolved oxygen (mg/L) 0.85 0.59temperature (deg. C) 27.1 10.9



MW-28

-5.00

-4.50

-4.00

-3.50

-3.00

-2.50

-2.00

-1.50

-1.00

-0.50

0.00

1

10

100

1,000

10/1/2011 2/1/2012 6/1/2012 10/1/2012 2/1/2013 6/1/2013 10/1/2013 2/1/2014 6/1/2014 10/1/2014 2/1/2015 6/1/2015 10/1/2015 2/1/2016 6/1/2016 10/1/2016

Depth

toW

ater(feet)C

once

ntra

tion

(ug/

l)

Datecis-1,2-DCE TCE vinyl chloride TCE VGES cis-1,2-DCE VGES vinyl chloride VGES DTW


6/12/2014 12/18/2014 6/11/2015 12/8/2015 6/20/2016 12/13/2016

acetone <10 34 <10 49.6 44.1 28.2benzene 1.9 3.6 1.4 2.4 1.2 2.42-butanone (MEK) <5.0 11.1 <5.0 10.5 <10 10.2n-butylbenzene <2.0 <2.0 <2.0 <2.0 <2.0 3.3sec-butylbenzene <2.0 <2.0 <2.0 <2.0 <2.0 2.6chloroethane <2.0 <2.0 5 33.4 43.5 47.41,1-dichloroethane 1.5 48 14.8 2.4 2.3 3.61,1-dichloroethene 1.1 <1.0 <1.0 <1.0 <1.0 2.3cis-1,2-dichloroethene 138 103 <1.0 1.4 <1.0 3.9trans-1,2-dichloroethene <1.0 2.4 1 1.2 <1.0 <1.0ethylbenzene 11.4 32.4 15.1 34.6 9.9 53.22-hexanone <5.0 <5.0 <5.0 <5.0 <5.0 22.2isopropylbenzene <5.0 6 <5.0 <10 <10 9.7p-isopropyltoluene <2.0 <2.0 <2.0 <2.0 <2.0 2.3naphthalene <5.0 6.5 <5.0 <5.0 <5.0 <5.0n-propylbenzene 5 7.9 <5.0 8.3 <5.0 12.4toluene 22.2 69.5 27.8 64.3 8.1 91.71,1,1-trichloroethane 10.5 8.4 <1.0 <1.0 <1.0 <1.0trichloroethene 147 2.6 <1.0 <1.0 <1.0 <1.0trichlorofluoromethane <1.0 <1.0 <1.0 <1.0 <1.0 <2.01,3,5-trimethylbenzene and1,2,4-trimethylbenzene 59 113.6 54 124.3 34.0 183.5vinyl chloride 19.6 81.1 1.9 2.5 <1.0 4.7m,p-xylene 55.1 151 68 178 42.9 259.0o-xylene 40.6 102 44.8 114 27.6 163.0

Total COC 513 783 235 628 216 907DTW -6.77 -4.00 -4.86 -5.12 -5.63 -5.24DCEs Percentage of COCs 27% 13% 0% 0% 0% 1%VC Percentage of COCs 4% 10% 1% 0.4% 0% 0.5%ORP (mV) -110.1 199.5 -178.0 -128.4 -69 -117.2dissolved oxygen (mg/L) 0.32 0.4 0.21 0.4 0.67 0.82temperature (deg. C) 13.7 10.8 14.03 10.9 21.3 12.0


5. Well replaced (in same location) after transformer area excavation work was completed.


MW-36

-7.00

-6.00

-5.00

-4.00

-3.00

-2.00

-1.00

0.00

1

10

100

1,000

6/1/2014 8/1/2014 10/1/2014 12/1/2014 2/1/2015 4/1/2015 6/1/2015 8/1/2015 10/1/2015 12/1/2015 2/1/2016 4/1/2016 6/1/2016 8/1/2016 10/1/2016 12/1/2016

Depth

toW

ater(feet)

Con

cent

ratio

n(u

g/l)



ECS-7 ECS-7 ECS-7 ECS-7R ECS-7R5 ECS-7R5 ECS-7RR6 ECS-7RR6 ECS-7RR6 ECS-7RR6

9/2/2011 4/24/2012 7/19/2012 6/4/2013 9/19/2013 6/12/2014 12/18/2014 6/11/2015 12/8/2015

acetone <10 <10 <10 <1,000 13.2 <10 <200 <100 <10benzene <0.50 <0.50 <0.50 <50 3.7 26.8 <10 7.6 5.2n-butylbenzene 4.1 <5.0 <5.0 <500 30.1 21 <100 <50 5.2sec-butylbenzene 4.5 <5.0 <5.0 <500 11.7 7 <100 <50 <5.0tert-butylbenzene 3.9 <5.0 <5.0 <500 <5.0 <5.0 <100 <50 <5.0chloroform <1.0 <1.0 <1.0 <1.0 9.6 <1.0 <20 <10 <1.0o-chlorotoluene <5.0 <5.0 <5.0 <500 255 <5.0 <100 <50 <5.01,1-dichloroethane 2.0 3.3 2.4 345 352 28.6 30.2 43.4 581,2-dichloroethane <1.0 <1.0 <1.0 <1.0 2.6 <1.0 <20 <10 <1.01,1-dichloroethene <1.0 <1.0 <1.0 570 766 29.3 <20 15.1 3.0cis-1,2-dichloroethene 22.9 178 <1.0 275,000 79,000 4,940 4,260 2,400 479trans-1,2-dichloroethene <1.0 <1.0 <1.0 114 358 66.9 <20 <10 3.6ethylbenzene <1.0 <5.0 1.4 <100 37 120 39.3 47.3 46.72-hexanone <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0isopropylbenzene 3.2 <5.0 <5.0 <500 52 20.8 <100 <50 8.64-isopropyltoluene 4.6 5.5 <5.0 <500 14.3 6.9 <100 <50 <5.0methylene chloride <2.0 <2.0 <2.0 855 790 7.4 <40 <20 <2.0naphthalene 4.8 <5.0 13.6 1,660 397 17.8 <100 <50 <5.0n-propylbenzene 7.2 8.5 8.4 <500 <5.0 30.7 <100 <50 <5.0styrene <5.0 <5.0 <5.0 <500 13.4 <5.0 <100 <50 <5.0tetrachloroethene <1.0 <1.0 <1.0 163 121 3.3 <20 <10 <1.0toluene <1.0 <1.0 <1.0 <100 28.8 361 108 125 1101,1,1-trichloroethane <1.0 <1.0 <1.0 13,500 12,600 495 115 112 92.51,1,2-trichloroethane <1.0 <1.0 <1.0 <100 39.8 <1.0 <20 <10 <1.0trichloroethene <1.0 2.3 1.4 1,650,000 244,000 3,320 <20 <10 1.8trichlorofluoromethane <1.0 <1.0 <1.0 671 210 64.3 <20 <10 6.31,3,5-trimethylbenzene and1,2,4-trimethylbenzene 78.9 72.7 77.3 3,506 5,023 403 <100 116 162.6vinyl chloride 53.1 98.7 <1.0 3,940 2,220 202 273 461 326m,p-xylene <1.0 2.7 3.8 182 167 592 201 232 242o-xylene 1.4 2.0 4.1 324 296 386 127 143 145

Total COC 193 375 114 1,950,830 346,811 11,150 5,174 3,712 1,696DTW -0.60 -0.30 -2.31 -5.50 -4.12 -6.35 -3.68 -4.45 -4.75DCEs Percentage of COCs 12% 48% 2% 14% 23% 45% 83% 65% 29%VC Percentage of COCs 28% 26% 0% 0% 1% 2% 5% 12% 19%ORP (mV) -101.2 -228.9 -67.3 nt nt nt -105.6 -214.8 -234.1 -292.5dissolved oxygen (mg/L) 3.47 0.24 0.28 nt nt nt 0.36 0.32 0.27 0.45temperature (deg. C) 17.76 8.74 18.63 nt nt nt 13.5 8.4 16.96 9.5

ECS-7RR6 ECS-7RR6

6/20/2016 12/13/2016

acetone <10 28.1benzene 7.6 2.72-Butanone (MEK) 18.5 <10n-butylbenzene <5.0 <2.0sec-butylbenzene <5.0 <2.0tert-butylbenzene <5.0 <5.0chloroethane 10.3 16.3chloroform <1.0 <1.0o-chlorotoluene <5.0 <5.01,1-dichloroethane 128 56.11,2-dichloroethane <1.0 <1.01,1-dichloroethene 19.8 1.8cis-1,2-dichloroethene 2,880 187trans-1,2-dichloroethene 11.5 1.62-hexanone <5.0 154ethylbenzene 54.6 28isopropylbenzene 9.7 5.54-isopropyltoluene <5.0 <5.0methylene chloride <2.0 <2.0naphthalene <5.0 <5.0n-propylbenzene 12.6 7.1styrene <5.0 <5.0tetrachloroethene <1.0 <1.0toluene 155 64.81,1,1-trichloroethane 257 43.91,1,2-trichloroethane 1.4 <1.0trichloroethene 26.8 1.7trichlorofluoromethane 64.2 3.41,3,5-trimethylbenzene and1,2,4-trimethylbenzene 154.4 99.5vinyl chloride 1,090 64.8m,p-xylene 22 134o-xylene 146 83.9

Total COC 5,069 984DTW -5.26 -4.83DCEs Percentage of COCs 57% 19%VC Percentage of COCs 22% 7%ORP (mV) -84.6 -380.0dissolved oxygen (mg/L) 0.33 0.28temperature (deg. C) 18.8 9.8


5. After bailing off floating LNAPL product from the well surface, sample collected with a bottom-weighted bailer from the bottom of the well.6. Well ECS-7R was replaced (in the same location as ECS-7R) after the transformer area excavation work was completed.


ECS-7RR

12/1

9/20

12FR

EEPR

OD

UC

TFL

OAT

ING

ON

GW

SUR

FAC

E

Well ECS-7 Removedand Replaced in New Location

↓

-7.00

-6.00

-5.00

-4.00

-3.00

-2.00

-1.00

0.00

1

10

100

1,000

10,000

100,000

1,000,000

10,000,000

9/1/2011 1/1/2012 5/1/2012 9/1/2012 1/1/2013 5/1/2013 9/1/2013 1/1/2014 5/1/2014 9/1/2014 1/1/2015 5/1/2015 9/1/2015 1/1/2016 5/1/2016 9/1/2016

Depth

toW

ater(feet)C

once

ntra

tion

(ug/

l)

Date

cis-1,2-DCE TCE TCE VGES cis-1,2-DCE VGES trans-1,2-DCE trans-1,2-DCE VGES vinyl chloride vinyl chloride VGES DTW


9/19/2013 6/12/2014 12/18/2014 6/11/2015 12/8/2015 6/20/2016 12/13/2016

benzene <0.50 12.3 <10 <0.50 <0.50 <0.5 0.54n-butylbenzene <5.0 15 <100 <5.0 <5.0 <5.0 3.3sec-butylbenzene <5.0 5.4 <100 <5.0 <5.0 <5.0 2.9chloroethane <1.0 <1.0 <1.0 <1.0 <1.0 17.6 9.81,1-dichloroethane 24.5 14 28.7 4.2 2.1 <1.0 10.11,1-dichloroethene 16.1 20.1 <20 <1.0 <1.0 <1.0 <1.0cis-1,2-dichloroethene 5,240 4,660 208 3.4 3.1 <1.0 71.0trans-1,2-dichloroethene 23.6 35.4 <20 <1.0 1.1 <1.0 1.9ethylbenzene <1.0 121 <20 3.9 15.2 10.9 18.72-hexanone <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 5.5isopropylbenzene <5.0 20.2 <100 <5.0 6.0 5.8 6.8p-isopropyltoluene <5.0 5.5 <100 <5.0 <5.0 <5.0 <2.0methylene chloride <2.0 3.8 <40 <2.0 <2.0 <2.0 <2.0naphthalene <5.0 9.4 <100 <5.0 <5.0 <5.0 <5.0n-propylbenzene <5.0 31.5 <100 <5.0 14.5 19.3 11.5toluene 1.1 289 <20 4.1 6.2 3.0 6.41,1,1-trichloroethane 262 373 <20 1.3 <1.0 <1.0 5.81,1,2-trichloroethane <1.0 1.0 <20 <1.0 <1.0 <1.0 <1.0trichloroethene 1,170 861 <20 1.1 <1.0 <1.0 <1.0trichlorofluoromethane 11.3 25.3 <20 <1.0 <1.0 <1.0 <2.01,3,5-trimethylbenzene and1,2,4-trimethylbenzene 5.0 362.3 <200 22.7 105.1 98.4 108.4vinyl chloride 327 110 85.3 1.4 9.0 <1.0 61.7m,p-xylene <1.0 499 36.9 16.7 62.3 35.7 27.5o-xylene 3.4 369 32.6 10.6 36.2 11.2 11.2

Total COC 7,084 7,843 392 47 260 205 364DTW -0.60 -6.17 -3.43 -4.32 -4.58 -5.07 -4.68DCEs Percentage of COCs 75% 60% 53% 7% 2% 0% 20%VC Percentage of COCs 5% 1% 22% 3% 3% 0% 17%ORP (mV) -101.2 -136 -149.8 -238.1 -265.2 -128.4 -77.9dissolved oxygen (mg/L) 3.47 0.21 0.84 0.31 0.68 0.12 1.14temperature (deg. C) 17.76 13.5 6.7 17.22 7.0 20 8.9


5. Well replaced (in same location) after transformer area excavation work was completed.


TW-1R

-7.00

-6.00

-5.00

-4.00

-3.00

-2.00

-1.00

0.00

1

10

100

1,000

10,000

9/1/2013 12/1/2013 3/1/2014 6/1/2014 9/1/2014 12/1/2014 3/1/2015 6/1/2015 9/1/2015 12/1/2015 3/1/2016 6/1/2016 9/1/2016 12/1/2016

Depth

toW

ater(feet)

Con

cent

ratio

n(u

g/l)



12/4/2012 12/13/2012 4/19/2013 7/29/2013 9/12/2013 6/12/2014 12/18/2014 6/11/2015 12/8/2015 3/8/2016

acetone 59.3 30.6 <10 <10 <10 <10 <10 <10 <20 <20bromodichloromethane <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0bromomethane <2.0 <2.0 7.2 <2.0 <2.0 <2.0 <2.0 <2.0 <4.0 <4.02-butanone (MEK) <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 14.6 <5.0 <20 <20chloroform <1.0 4.6 1.2 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0chloromethane <2.0 <2.0 <2.0 <2.0 <2.0 8.6 <2.0 <2.0 <4.0 <4.0dichlorodifluoromethane <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <4.0 <4.01,1-dichloroethane <1.0 <1.0 1.9 13.7 34.5 3.4 <1.0 7.8 11.4 5.91,1-dichloroethene <1.0 2.3 6.2 2.1 <1.0 <1.0 <1.0 6.7 10.8 6.2cis-1,2-dichloroethene 163 194 358 22.1 16.5 45.8 <1.0 438 534 598trans-1,2-dichloroethene <1.0 1.7 1.7 2.2 3.4 <1.0 <1.0 2.8 2.2 <2.0ethylbenzene <1.0 <1.0 <1.0 <1.0 <1.0 1.3 <1.0 <1.0 <2.0 2.8naphthalene <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <10 <10toluene <1.0 <1.0 <1.0 <1.0 <1.0 1.7 <1.0 <1.0 2.2 <2.01,1,1-trichloroethane 3.1 3.6 11.7 12.9 15.3 6.0 <1.0 24.2 36.7 23.3trichloroethene 76.9 36.6 4.9 <1.0 <1.0 1.1 <1.0 2.4 552 53.4trichlorofluoromethane <1.0 <1.0 1.6 1.4 <1.0 <1.0 <1.0 <1.0 3.9 2.81,2,4-trimethylbenzene <5.0 <5.0 <5.0 <5.0 <5.0 7.3 <5.0 <5.0 <10 17.2vinyl chloride 6.7 6.9 9.3 187 162 81.4 <1.0 117 71.8 97.6xylene (total) <1.0 <1.0 <1.0 <1.0 <1.0 11.8 <1.0 4.7 11.1 10.0

Total COC 309 280 404 242 233 168 18 604 1,246 817DCEs Percentage of COCs 53% 71% 91% 11% 9% 27% 6% 74% 44% 74%VC Percentage of COCs 2% 2% 2% 77% 70% 48% 0% 19% 6% 12%

6/14/2016 9/14/2016 12/29/2016

acetone <50 <50 <50bromodichloromethane <5.0 <5.0 <1.0bromomethane <10 <10 <2.02-butanone (MEK) <50 <50 <10chloroform <5.0 <5.0 <1.0chloromethane <10 <10 <2.0dichlorodifluoromethane <10 <10 <2.01,1-dichloroethane 8.7 15 6.41,1-dichloroethene <5.0 2.4 8.8cis-1,2-dichloroethene 320 186 241trans-1,2-dichloroethene <5.0 2.6 <1.0ethylbenzene <5.0 <5.0 <1.0naphthalene <25 <25 <5.0toluene <5.0 <5.0 <5.01,1,1-trichloroethane 23 15.1 32.9trichloroethene <5.0 5.0 616trichlorofluoromethane <5.0 <5.0 3.61,2,4-trimethylbenzene <525 <525 4.8vinyl chloride 466 245 50xylene (total) <5.0 <5.0 4.3

Total COC 823 471 968DCEs Percentage of COCs 39% 41% 26%VC Percentage of COCs 57% 52% 5%Notes: 1. Samples tested using EPA Method 8260. 2. Concentrations are in units of micrograms-per-liter (ug/l) or parts-per-billion (ppb). 3. <# - Compound not detected above method detection limit. Summation in spreadsheet yields 0; however, actual concentration may be between zero and the method detection limit. nt - not tested. ns - not sampled. COC - contaminants of concern.

Connor HomesBoiler Room Sump Influent (DMH-LD)

1

10

100

1,000

12/4/2012 4/4/2013 8/4/2013 12/4/2013 4/4/2014 8/4/2014 12/4/2014 4/4/2015 8/4/2015 12/4/2015 4/4/2016 8/4/2016 12/4/2016

Con

cent

ratio

n(u

g/l)

DateTCE TCE VGES cis-1,2-DCEvinyl chloride vinyl chloride VGES cis-1,2-DCE VGES


APPENDIX B

Date 9/16/2011 1/31/2012 4/25/2012 7/20/2012 12/14/2012 6/4/2013 9/20/2013 6/12/2014 12/17/2014 6/11/2015 12/8/2015 6/20/2016 12/13/2016

ORP (mV) 68.91 50.12 23.61 58.50 -111.81 8.4 9.38 20.22 20.78 8.1 -182.4 -17.6 -111.73

D.O. (mg/L) 3.84 2.25 2.43 0.35 1.01 0.76 3.79 3.21 0.67 1.57 0.61 1.38 1.20

B:\223088 Connor Homes\[ORP and DO.xlsx]Transformer Area

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11/18/2010 4/1/2012 8/14/2013 12/27/2014 5/10/2016 9/22/2017

D.O

.(m

g/L)

Date

Connor HomesFloor Drains Area

Oxidation Reduction Potential (ORP) and Dissolved Oxygen (D.O.) vs Time

D.O. (mg/L) D.O. Favorable Range (above line)

ORP (mV) ORP Favorable Range (above line)

OR

P(m

V)

Date 9/16/2011 1/31/2012 4/25/2012 7/20/2012 12/14/2012 6/4/2013 9/20/2013 6/12/2014 12/18/2014 6/11/2015 12/8/2015 6/20/2016 12/13/2016

ORP (mV) -0.88 71.34 4.85 1.67 -65.30 -47.07 -88.40 -50.70 -27.00 -18.30 -196.60 -144.95 -237.80

D.O. (mg/L) 1.31 3.47 2.41 1.83 1.26 0.78 3.71 0.41 0.81 0.46 1.99 0.58 0.59


-300.00

-250.00

-200.00

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11/18/2010 4/1/2012 8/14/2013 12/27/2014 5/10/2016 9/22/2017

D.O

.(m

g/L)

Date

Connor HomesWaste Storage Shed Area




OR

P(m

V)

Date 7/20/2012 12/14/2012 6/4/2013 9/20/2013 6/12/2014 12/18/2014 6/11/2015 6/20/2016 12/13/2016

ORP (mV) -13.3 -161.07 -145.4 -143.6 -106.4 -70.43 -93.30 -105.83

D.O. (mg/L) 0.16 0.42 0.30 0.47 0.32 0.53 0.40 0.40


-180

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-60

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1.00

4/1/2012 10/18/2012 5/6/2013 11/22/2013 6/10/2014 12/27/2014 7/15/2015 1/31/2016 8/18/2016 3/6/2017

D.O

.(m

g/L)

Date

Connor HomesLoading Dock Area




OR

P(m

g/L)

Date 9/20/2013 6/12/2014 12/18/2014 6/11/2015 12/8/2015 6/20/2016 12/13/2016

ORP (mV) -23.2 -65.5 -48.8 -163.98 -228.87 -84.4 -191.7

D.O. (mg/L) 3.70 3.27 1.14 1.07 0.51 0.72 0.75


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D.O

.(m

g/L)

Date

Connor HomesTransformer/Drywell Area




OR

P(m

g/L)

Date 9/16/2011 1/31/2012 4/25/2012 7/20/2012 12/14/2012 6/4/2013 9/20/2013 6/12/2014 12/17/2014 6/11/2015 12/8/2015 6/20/2016 12/13/2016

pH 7.35 7.35 7.25 7.34 7.26 7.23 7.28 7.26 7.33 7.44 7.20 7.09 7.04

B:\223088 Connor Homes\[ORP, DO and pH.xlsx]Floor Drains Area

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6/6/2011 10/18/2012 3/2/2014 7/15/2015 11/26/2016

pH

Date

Connor HomesFloor Drains Area

pH vs Time

pH

pH Favorable Range (Above Line)

pH Favorable Range (Below Line)

Date 9/16/2011 1/31/2012 4/25/2012 7/20/2012 12/14/2012 6/4/2013 9/20/2013 6/12/2014 12/17/2014 6/11/2015 12/8/2015 6/20/2016 12/13/2016

pH 7.26 6.98 7.21 6.66 7.30 7.13 7.29 7.10 7.16 7.29 7.20 6.82 6.68

B:\223088 Connor Homes\[ORP, DO and pH.xlsx]Waste Storage Shed Area

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6.00

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10.00

6/6/2011 10/18/2012 3/2/2014 7/15/2015 11/26/2016

pH

Date

Connor HomesWaste Storage Area

pH vs Time

pH



Date 9/16/2011 1/31/2012 4/25/2012 7/20/2012 12/14/2012 6/4/2013 9/20/2013 6/12/2014 12/17/2014 6/11/2015 12/8/2015 6/20/2016 12/13/2016

pH NM NM NM 7.39 7.35 7.16 7.02 7.11 7.16 6.88 NM 6.96 NM

B:\223088 Connor Homes\[ORP, DO and pH.xlsx]Loading Dock Area

4.00

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6.00

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6/15/2012 1/1/2013 7/20/2013 2/5/2014 8/24/2014 3/12/2015

pH

Date

Connor HomesLoading Dock Area

pH vs Time

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Date 9/16/2011 1/31/2012 4/25/2012 7/20/2012 12/14/2012 6/4/2013 9/20/2013 6/12/2014 12/17/2014 6/11/2015 12/8/2015 6/20/2016 12/13/2016

pH NM NM NM NM NM NM 7.22 7.31 7.06 7.22 6.95 6.85 6.56

B:\223088 Connor Homes\[ORP, DO and pH.xlsx]Transformer Area

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pH vs Time

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APPENDIX C

12/28/16

Technical Report for

DuBois & King, Inc.

Connor Homes, 1741 Route 7 South, Middlebury, VT

223088P

SGS Accutest Job Number: MC49161

Sampling Dates: 12/01/16 - 12/13/16

Report to:

Dubois & King, Inc.28 North Main StreetRandolph, VT [email protected]; [email protected]

ATTN: Jonathan Ashley

Total number of pages in report:

Certifications: MA (M-MA136,SW846 NELAC) CT (PH-0109) NH (250210) RI (00071) FL (E87579) NY (11791)

NJ (MA926) PA (6801121) ND (R-188) CO (MA00136) MN (11546AA) NC (653) IL (002337) WI (399080220)

DoD ELAP (L-A-B L2235)

This report shall not be reproduced, except in its entirety, without the written approval of SGS Accutest.

Test results relate only to samples analyzed.

New England • 50 D'Angelo Drive • Building 1 • Marlborough, MA 01752 • tel: 508-481-6200 • fax: 508-481-7753 • http://www.accutest.com

Test results contained within this data package meet the requirements

of the National Environmental Laboratory Accreditation Program

and/or state specific certification programs as applicable.

Client Service contact: Robert Soll 508-481-6200

H. (Brad) MadadianLab Director

New England 12/28/16

e-Hardcopy 2.0Automated Report

39

SGS Accutest is the sole authority for authorizing edits or modifications to this document.Unauthorized modification of this report is strictly prohibited.

1 of 39

MC49161

Table of Contents-1-

Sections:

Section 1: Sample Summary ................................................................................................... 3Section 2: Summary of Hits .................................................................................................... 4Section 3: Sample Results ........................................................................................................ 7

3.1: MC49161-1: TW-1R ..................................................................................................... 83.2: MC49161-2: ESC-7RR ................................................................................................. 113.3: MC49161-3: MW-36 .................................................................................................... 143.4: MC49161-4: MW-28 .................................................................................................... 173.5: MC49161-5: MW-5 ...................................................................................................... 203.6: MC49161-6: MW-4 ...................................................................................................... 233.7: MC49161-7: MW-9 ...................................................................................................... 263.8: MC49161-8: DUP-1 ..................................................................................................... 293.9: MC49161-9: TRIP BLANK ......................................................................................... 32

Section 4: Misc. Forms ............................................................................................................ 354.1: Chain of Custody ........................................................................................................... 364.2: Chain of Custody (SGS Accutest New Jersey) .............................................................. 38

12

34

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SGS Accutest

Sample Summary

DuBois & King, Inc.Job No: MC49161

Connor Homes, 1741 Route 7 South, Middlebury, VTProject No: 223088P

Sample Collected Matrix Client Number Date Time By Received Code Type Sample ID

MC49161-1 12/13/16 14:02 CJAS 12/15/16 AQ Ground Water TW-1R

MC49161-2 12/13/16 14:08 CJAS 12/15/16 AQ Ground Water ESC-7RR

MC49161-3 12/13/16 14:55 CJAS 12/15/16 AQ Ground Water MW-36





MC49161-8 12/13/16 12:00 CJAS 12/15/16 AQ Ground Water DUP-1

MC49161-9 12/01/16 00:00 CJAS 12/15/16 AQ Trip Blank Water TRIP BLANK

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MC49161

1

Summary of Hits Page 1 of 3 Job Number: MC49161Account: DuBois & King, Inc.Project: Connor Homes, 1741 Route 7 South, Middlebury, VTCollected: 12/01/16 thru 12/13/16

Lab Sample ID Client Sample ID Result/Analyte Qual RL MDL Units Method

MC49161-1 TW-1R

Benzene a 0.54 0.50 ug/l SW846 8260Cn-Butylbenzene a 3.3 2.0 ug/l SW846 8260Csec-Butylbenzene a 2.9 2.0 ug/l SW846 8260CChloroethane a 9.8 1.0 ug/l SW846 8260C1,1-Dichloroethane a 10.1 1.0 ug/l SW846 8260Ccis-1,2-Dichloroethene a 71.0 1.0 ug/l SW846 8260Ctrans-1,2-Dichloroethene a 1.9 1.0 ug/l SW846 8260CEthylbenzene a 18.7 1.0 ug/l SW846 8260C2-Hexanone a 5.5 5.0 ug/l SW846 8260CIsopropylbenzene a 6.8 1.0 ug/l SW846 8260Cn-Propylbenzene a 11.5 2.0 ug/l SW846 8260CToluene a 6.4 1.0 ug/l SW846 8260C1,1,1-Trichloroethane a 5.8 1.0 ug/l SW846 8260C1,2,4-Trimethylbenzene a 92.7 2.0 ug/l SW846 8260C1,3,5-Trimethylbenzene a 15.7 2.0 ug/l SW846 8260CVinyl chloride a 61.7 1.0 ug/l SW846 8260Cm,p-Xylene a 27.5 1.0 ug/l SW846 8260Co-Xylene a 11.2 1.0 ug/l SW846 8260CXylene (total) a 38.7 1.0 ug/l SW846 8260C

MC49161-2 ESC-7RR

Acetone b 28.1 J 10 ug/l SW846 8260CBenzene a 2.7 0.50 ug/l SW846 8260CChloroethane a 16.3 1.0 ug/l SW846 8260C1,1-Dichloroethane a 56.1 1.0 ug/l SW846 8260C1,1-Dichloroethene a 1.8 1.0 ug/l SW846 8260Ccis-1,2-Dichloroethene a 187 1.0 ug/l SW846 8260Ctrans-1,2-Dichloroethene a 1.6 1.0 ug/l SW846 8260CEthylbenzene a 28.1 1.0 ug/l SW846 8260C2-Hexanone a 154 5.0 ug/l SW846 8260CIsopropylbenzene a 5.5 1.0 ug/l SW846 8260Cn-Propylbenzene a 7.1 2.0 ug/l SW846 8260CToluene a 64.8 1.0 ug/l SW846 8260C1,1,1-Trichloroethane a 43.9 1.0 ug/l SW846 8260CTrichloroethene a 1.7 1.0 ug/l SW846 8260CTrichlorofluoromethane a 3.4 2.0 ug/l SW846 8260C1,2,4-Trimethylbenzene a 76.4 2.0 ug/l SW846 8260C1,3,5-Trimethylbenzene a 23.1 2.0 ug/l SW846 8260CVinyl chloride a 64.8 1.0 ug/l SW846 8260Cm,p-Xylene a 134 1.0 ug/l SW846 8260Co-Xylene a 83.9 1.0 ug/l SW846 8260CXylene (total) a 218 1.0 ug/l SW846 8260C

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MC49161

2



MC49161-3 MW-36

Acetone b 28.2 J 10 ug/l SW846 8260CBenzene a 2.4 0.50 ug/l SW846 8260C2-Butanone (MEK) a 10.2 10 ug/l SW846 8260Cn-Butylbenzene a 3.3 2.0 ug/l SW846 8260Csec-Butylbenzene a 2.6 2.0 ug/l SW846 8260CChloroethane a 47.4 1.0 ug/l SW846 8260C1,1-Dichloroethane a 3.6 1.0 ug/l SW846 8260C1,1-Dichloroethene a 2.3 1.0 ug/l SW846 8260Ccis-1,2-Dichloroethene a 3.9 1.0 ug/l SW846 8260CEthylbenzene a 53.2 1.0 ug/l SW846 8260C2-Hexanone a 22.2 5.0 ug/l SW846 8260CIsopropylbenzene a 9.7 1.0 ug/l SW846 8260Cp-Isopropyltoluene a 2.3 2.0 ug/l SW846 8260Cn-Propylbenzene a 12.4 2.0 ug/l SW846 8260CToluene a 91.7 1.0 ug/l SW846 8260C1,2,4-Trimethylbenzene a 142 2.0 ug/l SW846 8260C1,3,5-Trimethylbenzene a 41.5 2.0 ug/l SW846 8260CVinyl chloride a 4.7 1.0 ug/l SW846 8260Cm,p-Xylene a 259 1.0 ug/l SW846 8260Co-Xylene a 163 1.0 ug/l SW846 8260CXylene (total) a 422 1.0 ug/l SW846 8260C

MC49161-4 MW-28

cis-1,2-Dichloroethene a 76.1 1.0 ug/l SW846 8260Ctrans-1,2-Dichloroethene a 1.1 1.0 ug/l SW846 8260CTrichloroethene a 13.8 1.0 ug/l SW846 8260CVinyl chloride a 16.1 1.0 ug/l SW846 8260C

MC49161-5 MW-5

1,1-Dichloroethene a 1.6 1.0 ug/l SW846 8260Ccis-1,2-Dichloroethene a 63.1 1.0 ug/l SW846 8260Ctrans-1,2-Dichloroethene a 30.3 1.0 ug/l SW846 8260CTrichloroethene a 209 10 ug/l SW846 8260CVinyl chloride a 3.1 1.0 ug/l SW846 8260C

MC49161-6 MW-4

1,1-Dichloroethene a 1.2 1.0 ug/l SW846 8260Ccis-1,2-Dichloroethene a 159 1.0 ug/l SW846 8260Ctrans-1,2-Dichloroethene a 170 1.0 ug/l SW846 8260C

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2



Trichloroethene a 394 10 ug/l SW846 8260C

MC49161-7 MW-9

cis-1,2-Dichloroethene a 95.3 1.0 ug/l SW846 8260Ctrans-1,2-Dichloroethene a 34.7 1.0 ug/l SW846 8260CTrichloroethene a 25.6 1.0 ug/l SW846 8260CVinyl chloride a 12.8 1.0 ug/l SW846 8260C

MC49161-8 DUP-1

cis-1,2-Dichloroethene a 100 1.0 ug/l SW846 8260Ctrans-1,2-Dichloroethene a 34.9 1.0 ug/l SW846 8260CTrichloroethene a 26.1 1.0 ug/l SW846 8260CVinyl chloride a 12.3 1.0 ug/l SW846 8260C

MC49161-9 TRIP BLANK

No hits reported in this sample.

(a) Analysis performed at SGS Accutest, Dayton, NJ.(b) Analysis performed at SGS Accutest, Dayton, NJ. This compound in the associated CCV is outside the 20%D limit

biased high.

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2

SGS Accutest

Sample Results

Report of Analysis

New EnglandSection 3

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3

SGS Accutest

Report of Analysis Page 1 of 3

Client Sample ID: TW-1R Lab Sample ID: MC49161-1 Date Sampled: 12/13/16 Matrix: AQ - Ground Water Date Received: 12/15/16 Method: SW846 8260C Percent Solids: n/a Project: Connor Homes, 1741 Route 7 South, Middlebury, VT

File ID DF Analyzed By Prep Date Prep Batch Analytical BatchRun #1 a D246196.D 1 12/27/16 ANJ n/a n/a N:VD9954Run #2

Purge VolumeRun #1 5.0 mlRun #2

VOA 8260 List

CAS No. Compound Result RL Units Q

67-64-1 Acetone b ND 10 ug/l71-43-2 Benzene 0.54 0.50 ug/l108-86-1 Bromobenzene ND 1.0 ug/l74-97-5 Bromochloromethane ND 1.0 ug/l75-27-4 Bromodichloromethane ND 1.0 ug/l75-25-2 Bromoform ND 1.0 ug/l74-83-9 Bromomethane ND 2.0 ug/l78-93-3 2-Butanone (MEK) ND 10 ug/l104-51-8 n-Butylbenzene 3.3 2.0 ug/l135-98-8 sec-Butylbenzene 2.9 2.0 ug/l98-06-6 tert-Butylbenzene ND 2.0 ug/l75-15-0 Carbon disulfide ND 2.0 ug/l56-23-5 Carbon tetrachloride ND 1.0 ug/l108-90-7 Chlorobenzene ND 1.0 ug/l75-00-3 Chloroethane 9.8 1.0 ug/l67-66-3 Chloroform ND 1.0 ug/l74-87-3 Chloromethane ND 1.0 ug/l95-49-8 o-Chlorotoluene ND 2.0 ug/l106-43-4 p-Chlorotoluene ND 2.0 ug/l96-12-8 1,2-Dibromo-3-chloropropane ND 2.0 ug/l124-48-1 Dibromochloromethane ND 1.0 ug/l106-93-4 1,2-Dibromoethane ND 1.0 ug/l95-50-1 1,2-Dichlorobenzene ND 1.0 ug/l541-73-1 1,3-Dichlorobenzene ND 1.0 ug/l106-46-7 1,4-Dichlorobenzene ND 1.0 ug/l75-71-8 Dichlorodifluoromethane ND 2.0 ug/l75-34-3 1,1-Dichloroethane 10.1 1.0 ug/l107-06-2 1,2-Dichloroethane ND 1.0 ug/l75-35-4 1,1-Dichloroethene ND 1.0 ug/l156-59-2 cis-1,2-Dichloroethene 71.0 1.0 ug/l156-60-5 trans-1,2-Dichloroethene 1.9 1.0 ug/l78-87-5 1,2-Dichloropropane ND 1.0 ug/l

ND = Not detected J = Indicates an estimated valueRL = Reporting Limit B = Indicates analyte found in associated method blankE = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound

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SGS Accutest



VOA 8260 List


142-28-9 1,3-Dichloropropane ND 1.0 ug/l594-20-7 2,2-Dichloropropane ND 1.0 ug/l563-58-6 1,1-Dichloropropene ND 1.0 ug/l10061-01-5 cis-1,3-Dichloropropene ND 1.0 ug/l10061-02-6 trans-1,3-Dichloropropene ND 1.0 ug/l100-41-4 Ethylbenzene 18.7 1.0 ug/l87-68-3 Hexachlorobutadiene ND 2.0 ug/l591-78-6 2-Hexanone 5.5 5.0 ug/l74-88-4 Iodomethane ND 2.0 ug/l98-82-8 Isopropylbenzene 6.8 1.0 ug/l99-87-6 p-Isopropyltoluene ND 2.0 ug/l1634-04-4 Methyl Tert Butyl Ether ND 1.0 ug/l108-10-1 4-Methyl-2-pentanone(MIBK) ND 5.0 ug/l74-95-3 Methylene bromide ND 1.0 ug/l75-09-2 Methylene chloride ND 2.0 ug/l91-20-3 Naphthalene ND 5.0 ug/l103-65-1 n-Propylbenzene 11.5 2.0 ug/l100-42-5 Styrene ND 1.0 ug/l630-20-6 1,1,1,2-Tetrachloroethane ND 1.0 ug/l79-34-5 1,1,2,2-Tetrachloroethane ND 1.0 ug/l127-18-4 Tetrachloroethene ND 1.0 ug/l108-88-3 Toluene 6.4 1.0 ug/l87-61-6 1,2,3-Trichlorobenzene ND 1.0 ug/l120-82-1 1,2,4-Trichlorobenzene ND 1.0 ug/l71-55-6 1,1,1-Trichloroethane 5.8 1.0 ug/l79-00-5 1,1,2-Trichloroethane ND 1.0 ug/l79-01-6 Trichloroethene ND 1.0 ug/l75-69-4 Trichlorofluoromethane ND 2.0 ug/l96-18-4 1,2,3-Trichloropropane ND 2.0 ug/l95-63-6 1,2,4-Trimethylbenzene 92.7 2.0 ug/l108-67-8 1,3,5-Trimethylbenzene 15.7 2.0 ug/l108-05-4 Vinyl Acetate ND 10 ug/l75-01-4 Vinyl chloride 61.7 1.0 ug/l

m,p-Xylene 27.5 1.0 ug/l95-47-6 o-Xylene 11.2 1.0 ug/l1330-20-7 Xylene (total) 38.7 1.0 ug/l

CAS No. Surrogate Recoveries Run# 1 Run# 2 Limits

1868-53-7 Dibromofluoromethane 102% 76-120%


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VOA 8260 List


17060-07-0 1,2-Dichloroethane-D4 101% 73-122%2037-26-5 Toluene-D8 106% 84-119%460-00-4 4-Bromofluorobenzene 108% 78-117%

(a) Analysis performed at SGS Accutest, Dayton, NJ.(b) This compound in the associated CCV is outside the 20%D limit biased high.


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33.1

SGS Accutest


Client Sample ID: ESC-7RR Lab Sample ID: MC49161-2 Date Sampled: 12/13/16 Matrix: AQ - Ground Water Date Received: 12/15/16 Method: SW846 8260C Percent Solids: n/a Project: Connor Homes, 1741 Route 7 South, Middlebury, VT



VOA 8260 List


67-64-1 Acetone b 28.1 10 ug/l J71-43-2 Benzene 2.7 0.50 ug/l108-86-1 Bromobenzene ND 1.0 ug/l74-97-5 Bromochloromethane ND 1.0 ug/l75-27-4 Bromodichloromethane ND 1.0 ug/l75-25-2 Bromoform ND 1.0 ug/l74-83-9 Bromomethane ND 2.0 ug/l78-93-3 2-Butanone (MEK) ND 10 ug/l104-51-8 n-Butylbenzene ND 2.0 ug/l135-98-8 sec-Butylbenzene ND 2.0 ug/l98-06-6 tert-Butylbenzene ND 2.0 ug/l75-15-0 Carbon disulfide ND 2.0 ug/l56-23-5 Carbon tetrachloride ND 1.0 ug/l108-90-7 Chlorobenzene ND 1.0 ug/l75-00-3 Chloroethane 16.3 1.0 ug/l67-66-3 Chloroform ND 1.0 ug/l74-87-3 Chloromethane ND 1.0 ug/l95-49-8 o-Chlorotoluene ND 2.0 ug/l106-43-4 p-Chlorotoluene ND 2.0 ug/l96-12-8 1,2-Dibromo-3-chloropropane ND 2.0 ug/l124-48-1 Dibromochloromethane ND 1.0 ug/l106-93-4 1,2-Dibromoethane ND 1.0 ug/l95-50-1 1,2-Dichlorobenzene ND 1.0 ug/l541-73-1 1,3-Dichlorobenzene ND 1.0 ug/l106-46-7 1,4-Dichlorobenzene ND 1.0 ug/l75-71-8 Dichlorodifluoromethane ND 2.0 ug/l75-34-3 1,1-Dichloroethane 56.1 1.0 ug/l107-06-2 1,2-Dichloroethane ND 1.0 ug/l75-35-4 1,1-Dichloroethene 1.8 1.0 ug/l156-59-2 cis-1,2-Dichloroethene 187 1.0 ug/l156-60-5 trans-1,2-Dichloroethene 1.6 1.0 ug/l78-87-5 1,2-Dichloropropane ND 1.0 ug/l


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33.2

SGS Accutest



VOA 8260 List


142-28-9 1,3-Dichloropropane ND 1.0 ug/l594-20-7 2,2-Dichloropropane ND 1.0 ug/l563-58-6 1,1-Dichloropropene ND 1.0 ug/l10061-01-5 cis-1,3-Dichloropropene ND 1.0 ug/l10061-02-6 trans-1,3-Dichloropropene ND 1.0 ug/l100-41-4 Ethylbenzene 28.1 1.0 ug/l87-68-3 Hexachlorobutadiene ND 2.0 ug/l591-78-6 2-Hexanone 154 5.0 ug/l74-88-4 Iodomethane ND 2.0 ug/l98-82-8 Isopropylbenzene 5.5 1.0 ug/l99-87-6 p-Isopropyltoluene ND 2.0 ug/l1634-04-4 Methyl Tert Butyl Ether ND 1.0 ug/l108-10-1 4-Methyl-2-pentanone(MIBK) ND 5.0 ug/l74-95-3 Methylene bromide ND 1.0 ug/l75-09-2 Methylene chloride ND 2.0 ug/l91-20-3 Naphthalene ND 5.0 ug/l103-65-1 n-Propylbenzene 7.1 2.0 ug/l100-42-5 Styrene ND 1.0 ug/l630-20-6 1,1,1,2-Tetrachloroethane ND 1.0 ug/l79-34-5 1,1,2,2-Tetrachloroethane ND 1.0 ug/l127-18-4 Tetrachloroethene ND 1.0 ug/l108-88-3 Toluene 64.8 1.0 ug/l87-61-6 1,2,3-Trichlorobenzene ND 1.0 ug/l120-82-1 1,2,4-Trichlorobenzene ND 1.0 ug/l71-55-6 1,1,1-Trichloroethane 43.9 1.0 ug/l79-00-5 1,1,2-Trichloroethane ND 1.0 ug/l79-01-6 Trichloroethene 1.7 1.0 ug/l75-69-4 Trichlorofluoromethane 3.4 2.0 ug/l96-18-4 1,2,3-Trichloropropane ND 2.0 ug/l95-63-6 1,2,4-Trimethylbenzene 76.4 2.0 ug/l108-67-8 1,3,5-Trimethylbenzene 23.1 2.0 ug/l108-05-4 Vinyl Acetate ND 10 ug/l75-01-4 Vinyl chloride 64.8 1.0 ug/l

m,p-Xylene 134 1.0 ug/l95-47-6 o-Xylene 83.9 1.0 ug/l1330-20-7 Xylene (total) 218 1.0 ug/l




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33.2

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VOA 8260 List





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33.2

SGS Accutest


Client Sample ID: MW-36 Lab Sample ID: MC49161-3 Date Sampled: 12/13/16 Matrix: AQ - Ground Water Date Received: 12/15/16 Method: SW846 8260C Percent Solids: n/a Project: Connor Homes, 1741 Route 7 South, Middlebury, VT



VOA 8260 List


67-64-1 Acetone b 28.2 10 ug/l J71-43-2 Benzene 2.4 0.50 ug/l108-86-1 Bromobenzene ND 1.0 ug/l74-97-5 Bromochloromethane ND 1.0 ug/l75-27-4 Bromodichloromethane ND 1.0 ug/l75-25-2 Bromoform ND 1.0 ug/l74-83-9 Bromomethane ND 2.0 ug/l78-93-3 2-Butanone (MEK) 10.2 10 ug/l104-51-8 n-Butylbenzene 3.3 2.0 ug/l135-98-8 sec-Butylbenzene 2.6 2.0 ug/l98-06-6 tert-Butylbenzene ND 2.0 ug/l75-15-0 Carbon disulfide ND 2.0 ug/l56-23-5 Carbon tetrachloride ND 1.0 ug/l108-90-7 Chlorobenzene ND 1.0 ug/l75-00-3 Chloroethane 47.4 1.0 ug/l67-66-3 Chloroform ND 1.0 ug/l74-87-3 Chloromethane ND 1.0 ug/l95-49-8 o-Chlorotoluene ND 2.0 ug/l106-43-4 p-Chlorotoluene ND 2.0 ug/l96-12-8 1,2-Dibromo-3-chloropropane ND 2.0 ug/l124-48-1 Dibromochloromethane ND 1.0 ug/l106-93-4 1,2-Dibromoethane ND 1.0 ug/l95-50-1 1,2-Dichlorobenzene ND 1.0 ug/l541-73-1 1,3-Dichlorobenzene ND 1.0 ug/l106-46-7 1,4-Dichlorobenzene ND 1.0 ug/l75-71-8 Dichlorodifluoromethane ND 2.0 ug/l75-34-3 1,1-Dichloroethane 3.6 1.0 ug/l107-06-2 1,2-Dichloroethane ND 1.0 ug/l75-35-4 1,1-Dichloroethene 2.3 1.0 ug/l156-59-2 cis-1,2-Dichloroethene 3.9 1.0 ug/l156-60-5 trans-1,2-Dichloroethene ND 1.0 ug/l78-87-5 1,2-Dichloropropane ND 1.0 ug/l


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33.3

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VOA 8260 List


142-28-9 1,3-Dichloropropane ND 1.0 ug/l594-20-7 2,2-Dichloropropane ND 1.0 ug/l563-58-6 1,1-Dichloropropene ND 1.0 ug/l10061-01-5 cis-1,3-Dichloropropene ND 1.0 ug/l10061-02-6 trans-1,3-Dichloropropene ND 1.0 ug/l100-41-4 Ethylbenzene 53.2 1.0 ug/l87-68-3 Hexachlorobutadiene ND 2.0 ug/l591-78-6 2-Hexanone 22.2 5.0 ug/l74-88-4 Iodomethane ND 2.0 ug/l98-82-8 Isopropylbenzene 9.7 1.0 ug/l99-87-6 p-Isopropyltoluene 2.3 2.0 ug/l1634-04-4 Methyl Tert Butyl Ether ND 1.0 ug/l108-10-1 4-Methyl-2-pentanone(MIBK) ND 5.0 ug/l74-95-3 Methylene bromide ND 1.0 ug/l75-09-2 Methylene chloride ND 2.0 ug/l91-20-3 Naphthalene ND 5.0 ug/l103-65-1 n-Propylbenzene 12.4 2.0 ug/l100-42-5 Styrene ND 1.0 ug/l630-20-6 1,1,1,2-Tetrachloroethane ND 1.0 ug/l79-34-5 1,1,2,2-Tetrachloroethane ND 1.0 ug/l127-18-4 Tetrachloroethene ND 1.0 ug/l108-88-3 Toluene 91.7 1.0 ug/l87-61-6 1,2,3-Trichlorobenzene ND 1.0 ug/l120-82-1 1,2,4-Trichlorobenzene ND 1.0 ug/l71-55-6 1,1,1-Trichloroethane ND 1.0 ug/l79-00-5 1,1,2-Trichloroethane ND 1.0 ug/l79-01-6 Trichloroethene ND 1.0 ug/l75-69-4 Trichlorofluoromethane ND 2.0 ug/l96-18-4 1,2,3-Trichloropropane ND 2.0 ug/l95-63-6 1,2,4-Trimethylbenzene 142 2.0 ug/l108-67-8 1,3,5-Trimethylbenzene 41.5 2.0 ug/l108-05-4 Vinyl Acetate ND 10 ug/l75-01-4 Vinyl chloride 4.7 1.0 ug/l

m,p-Xylene 259 1.0 ug/l95-47-6 o-Xylene 163 1.0 ug/l1330-20-7 Xylene (total) 422 1.0 ug/l




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33.3

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VOA 8260 List





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33.3

SGS Accutest





VOA 8260 List


67-64-1 Acetone ND 10 ug/l71-43-2 Benzene ND 0.50 ug/l108-86-1 Bromobenzene ND 1.0 ug/l74-97-5 Bromochloromethane ND 1.0 ug/l75-27-4 Bromodichloromethane ND 1.0 ug/l75-25-2 Bromoform ND 1.0 ug/l74-83-9 Bromomethane ND 2.0 ug/l78-93-3 2-Butanone (MEK) ND 10 ug/l104-51-8 n-Butylbenzene ND 2.0 ug/l135-98-8 sec-Butylbenzene ND 2.0 ug/l98-06-6 tert-Butylbenzene ND 2.0 ug/l75-15-0 Carbon disulfide ND 2.0 ug/l56-23-5 Carbon tetrachloride ND 1.0 ug/l108-90-7 Chlorobenzene ND 1.0 ug/l75-00-3 Chloroethane ND 1.0 ug/l67-66-3 Chloroform ND 1.0 ug/l74-87-3 Chloromethane ND 1.0 ug/l95-49-8 o-Chlorotoluene ND 2.0 ug/l106-43-4 p-Chlorotoluene ND 2.0 ug/l96-12-8 1,2-Dibromo-3-chloropropane ND 2.0 ug/l124-48-1 Dibromochloromethane ND 1.0 ug/l106-93-4 1,2-Dibromoethane ND 1.0 ug/l95-50-1 1,2-Dichlorobenzene ND 1.0 ug/l541-73-1 1,3-Dichlorobenzene ND 1.0 ug/l106-46-7 1,4-Dichlorobenzene ND 1.0 ug/l75-71-8 Dichlorodifluoromethane ND 2.0 ug/l75-34-3 1,1-Dichloroethane ND 1.0 ug/l107-06-2 1,2-Dichloroethane ND 1.0 ug/l75-35-4 1,1-Dichloroethene ND 1.0 ug/l156-59-2 cis-1,2-Dichloroethene 76.1 1.0 ug/l156-60-5 trans-1,2-Dichloroethene 1.1 1.0 ug/l78-87-5 1,2-Dichloropropane ND 1.0 ug/l


17 of 39

MC49161

33.4

SGS Accutest



VOA 8260 List


142-28-9 1,3-Dichloropropane ND 1.0 ug/l594-20-7 2,2-Dichloropropane ND 1.0 ug/l563-58-6 1,1-Dichloropropene ND 1.0 ug/l10061-01-5 cis-1,3-Dichloropropene ND 1.0 ug/l10061-02-6 trans-1,3-Dichloropropene ND 1.0 ug/l100-41-4 Ethylbenzene ND 1.0 ug/l87-68-3 Hexachlorobutadiene ND 2.0 ug/l591-78-6 2-Hexanone ND 5.0 ug/l74-88-4 Iodomethane ND 2.0 ug/l98-82-8 Isopropylbenzene ND 1.0 ug/l99-87-6 p-Isopropyltoluene ND 2.0 ug/l1634-04-4 Methyl Tert Butyl Ether ND 1.0 ug/l108-10-1 4-Methyl-2-pentanone(MIBK) ND 5.0 ug/l74-95-3 Methylene bromide ND 1.0 ug/l75-09-2 Methylene chloride ND 2.0 ug/l91-20-3 Naphthalene ND 5.0 ug/l103-65-1 n-Propylbenzene ND 2.0 ug/l100-42-5 Styrene ND 1.0 ug/l630-20-6 1,1,1,2-Tetrachloroethane ND 1.0 ug/l79-34-5 1,1,2,2-Tetrachloroethane ND 1.0 ug/l127-18-4 Tetrachloroethene ND 1.0 ug/l108-88-3 Toluene ND 1.0 ug/l87-61-6 1,2,3-Trichlorobenzene ND 1.0 ug/l120-82-1 1,2,4-Trichlorobenzene ND 1.0 ug/l71-55-6 1,1,1-Trichloroethane ND 1.0 ug/l79-00-5 1,1,2-Trichloroethane ND 1.0 ug/l79-01-6 Trichloroethene 13.8 1.0 ug/l75-69-4 Trichlorofluoromethane ND 2.0 ug/l96-18-4 1,2,3-Trichloropropane ND 2.0 ug/l95-63-6 1,2,4-Trimethylbenzene ND 2.0 ug/l108-67-8 1,3,5-Trimethylbenzene ND 2.0 ug/l108-05-4 Vinyl Acetate ND 10 ug/l75-01-4 Vinyl chloride 16.1 1.0 ug/l

m,p-Xylene ND 1.0 ug/l95-47-6 o-Xylene ND 1.0 ug/l1330-20-7 Xylene (total) ND 1.0 ug/l




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SGS Accutest



VOA 8260 List



(a) Analysis performed at SGS Accutest, Dayton, NJ.


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SGS Accutest



File ID DF Analyzed By Prep Date Prep Batch Analytical BatchRun #1 a D246102.D 1 12/24/16 ANJ n/a n/a N:VD9950Run #2 a D246137.D 10 12/26/16 ANJ n/a n/a N:VD9952

Purge VolumeRun #1 5.0 mlRun #2 5.0 ml

VOA 8260 List


67-64-1 Acetone ND 10 ug/l71-43-2 Benzene ND 0.50 ug/l108-86-1 Bromobenzene ND 1.0 ug/l74-97-5 Bromochloromethane ND 1.0 ug/l75-27-4 Bromodichloromethane ND 1.0 ug/l75-25-2 Bromoform ND 1.0 ug/l74-83-9 Bromomethane ND 2.0 ug/l78-93-3 2-Butanone (MEK) ND 10 ug/l104-51-8 n-Butylbenzene ND 2.0 ug/l135-98-8 sec-Butylbenzene ND 2.0 ug/l98-06-6 tert-Butylbenzene ND 2.0 ug/l75-15-0 Carbon disulfide ND 2.0 ug/l56-23-5 Carbon tetrachloride ND 1.0 ug/l108-90-7 Chlorobenzene ND 1.0 ug/l75-00-3 Chloroethane ND 1.0 ug/l67-66-3 Chloroform ND 1.0 ug/l74-87-3 Chloromethane ND 1.0 ug/l95-49-8 o-Chlorotoluene ND 2.0 ug/l106-43-4 p-Chlorotoluene ND 2.0 ug/l96-12-8 1,2-Dibromo-3-chloropropane ND 2.0 ug/l124-48-1 Dibromochloromethane ND 1.0 ug/l106-93-4 1,2-Dibromoethane ND 1.0 ug/l95-50-1 1,2-Dichlorobenzene ND 1.0 ug/l541-73-1 1,3-Dichlorobenzene ND 1.0 ug/l106-46-7 1,4-Dichlorobenzene ND 1.0 ug/l75-71-8 Dichlorodifluoromethane ND 2.0 ug/l75-34-3 1,1-Dichloroethane ND 1.0 ug/l107-06-2 1,2-Dichloroethane ND 1.0 ug/l75-35-4 1,1-Dichloroethene 1.6 1.0 ug/l156-59-2 cis-1,2-Dichloroethene 63.1 1.0 ug/l156-60-5 trans-1,2-Dichloroethene 30.3 1.0 ug/l78-87-5 1,2-Dichloropropane ND 1.0 ug/l


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MC49161

33.5

SGS Accutest



VOA 8260 List


142-28-9 1,3-Dichloropropane ND 1.0 ug/l594-20-7 2,2-Dichloropropane ND 1.0 ug/l563-58-6 1,1-Dichloropropene ND 1.0 ug/l10061-01-5 cis-1,3-Dichloropropene ND 1.0 ug/l10061-02-6 trans-1,3-Dichloropropene ND 1.0 ug/l100-41-4 Ethylbenzene ND 1.0 ug/l87-68-3 Hexachlorobutadiene ND 2.0 ug/l591-78-6 2-Hexanone ND 5.0 ug/l74-88-4 Iodomethane ND 2.0 ug/l98-82-8 Isopropylbenzene ND 1.0 ug/l99-87-6 p-Isopropyltoluene ND 2.0 ug/l1634-04-4 Methyl Tert Butyl Ether ND 1.0 ug/l108-10-1 4-Methyl-2-pentanone(MIBK) ND 5.0 ug/l74-95-3 Methylene bromide ND 1.0 ug/l75-09-2 Methylene chloride ND 2.0 ug/l91-20-3 Naphthalene ND 5.0 ug/l103-65-1 n-Propylbenzene ND 2.0 ug/l100-42-5 Styrene ND 1.0 ug/l630-20-6 1,1,1,2-Tetrachloroethane ND 1.0 ug/l79-34-5 1,1,2,2-Tetrachloroethane ND 1.0 ug/l127-18-4 Tetrachloroethene ND 1.0 ug/l108-88-3 Toluene ND 1.0 ug/l87-61-6 1,2,3-Trichlorobenzene ND 1.0 ug/l120-82-1 1,2,4-Trichlorobenzene ND 1.0 ug/l71-55-6 1,1,1-Trichloroethane ND 1.0 ug/l79-00-5 1,1,2-Trichloroethane ND 1.0 ug/l79-01-6 Trichloroethene 209 b 10 ug/l75-69-4 Trichlorofluoromethane ND 2.0 ug/l96-18-4 1,2,3-Trichloropropane ND 2.0 ug/l95-63-6 1,2,4-Trimethylbenzene ND 2.0 ug/l108-67-8 1,3,5-Trimethylbenzene ND 2.0 ug/l108-05-4 Vinyl Acetate ND 10 ug/l75-01-4 Vinyl chloride 3.1 1.0 ug/l



1868-53-7 Dibromofluoromethane 100% 100% 76-120%


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33.5

SGS Accutest



VOA 8260 List


17060-07-0 1,2-Dichloroethane-D4 100% 100% 73-122%2037-26-5 Toluene-D8 103% 102% 84-119%460-00-4 4-Bromofluorobenzene 105% 107% 78-117%

(a) Analysis performed at SGS Accutest, Dayton, NJ.(b) Result is from Run# 2


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MC49161

33.5

SGS Accutest



File ID DF Analyzed By Prep Date Prep Batch Analytical BatchRun #1 a D246094.D 1 12/24/16 ANJ n/a n/a N:VD9950Run #2 a D246141.D 10 12/26/16 ANJ n/a n/a N:VD9952


VOA 8260 List


67-64-1 Acetone ND 10 ug/l71-43-2 Benzene ND 0.50 ug/l108-86-1 Bromobenzene ND 1.0 ug/l74-97-5 Bromochloromethane ND 1.0 ug/l75-27-4 Bromodichloromethane ND 1.0 ug/l75-25-2 Bromoform ND 1.0 ug/l74-83-9 Bromomethane ND 2.0 ug/l78-93-3 2-Butanone (MEK) ND 10 ug/l104-51-8 n-Butylbenzene ND 2.0 ug/l135-98-8 sec-Butylbenzene ND 2.0 ug/l98-06-6 tert-Butylbenzene ND 2.0 ug/l75-15-0 Carbon disulfide ND 2.0 ug/l56-23-5 Carbon tetrachloride ND 1.0 ug/l108-90-7 Chlorobenzene ND 1.0 ug/l75-00-3 Chloroethane ND 1.0 ug/l67-66-3 Chloroform ND 1.0 ug/l74-87-3 Chloromethane ND 1.0 ug/l95-49-8 o-Chlorotoluene ND 2.0 ug/l106-43-4 p-Chlorotoluene ND 2.0 ug/l96-12-8 1,2-Dibromo-3-chloropropane ND 2.0 ug/l124-48-1 Dibromochloromethane ND 1.0 ug/l106-93-4 1,2-Dibromoethane ND 1.0 ug/l95-50-1 1,2-Dichlorobenzene ND 1.0 ug/l541-73-1 1,3-Dichlorobenzene ND 1.0 ug/l106-46-7 1,4-Dichlorobenzene ND 1.0 ug/l75-71-8 Dichlorodifluoromethane ND 2.0 ug/l75-34-3 1,1-Dichloroethane ND 1.0 ug/l107-06-2 1,2-Dichloroethane ND 1.0 ug/l75-35-4 1,1-Dichloroethene 1.2 1.0 ug/l156-59-2 cis-1,2-Dichloroethene 159 1.0 ug/l156-60-5 trans-1,2-Dichloroethene 170 1.0 ug/l78-87-5 1,2-Dichloropropane ND 1.0 ug/l


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MC49161

33.6

SGS Accutest



VOA 8260 List


142-28-9 1,3-Dichloropropane ND 1.0 ug/l594-20-7 2,2-Dichloropropane ND 1.0 ug/l563-58-6 1,1-Dichloropropene ND 1.0 ug/l10061-01-5 cis-1,3-Dichloropropene ND 1.0 ug/l10061-02-6 trans-1,3-Dichloropropene ND 1.0 ug/l100-41-4 Ethylbenzene ND 1.0 ug/l87-68-3 Hexachlorobutadiene ND 2.0 ug/l591-78-6 2-Hexanone ND 5.0 ug/l74-88-4 Iodomethane ND 2.0 ug/l98-82-8 Isopropylbenzene ND 1.0 ug/l99-87-6 p-Isopropyltoluene ND 2.0 ug/l1634-04-4 Methyl Tert Butyl Ether ND 1.0 ug/l108-10-1 4-Methyl-2-pentanone(MIBK) ND 5.0 ug/l74-95-3 Methylene bromide ND 1.0 ug/l75-09-2 Methylene chloride ND 2.0 ug/l91-20-3 Naphthalene ND 5.0 ug/l103-65-1 n-Propylbenzene ND 2.0 ug/l100-42-5 Styrene ND 1.0 ug/l630-20-6 1,1,1,2-Tetrachloroethane ND 1.0 ug/l79-34-5 1,1,2,2-Tetrachloroethane ND 1.0 ug/l127-18-4 Tetrachloroethene ND 1.0 ug/l108-88-3 Toluene ND 1.0 ug/l87-61-6 1,2,3-Trichlorobenzene ND 1.0 ug/l120-82-1 1,2,4-Trichlorobenzene ND 1.0 ug/l71-55-6 1,1,1-Trichloroethane ND 1.0 ug/l79-00-5 1,1,2-Trichloroethane ND 1.0 ug/l79-01-6 Trichloroethene 394 b 10 ug/l75-69-4 Trichlorofluoromethane ND 2.0 ug/l96-18-4 1,2,3-Trichloropropane ND 2.0 ug/l95-63-6 1,2,4-Trimethylbenzene ND 2.0 ug/l108-67-8 1,3,5-Trimethylbenzene ND 2.0 ug/l108-05-4 Vinyl Acetate ND 10 ug/l75-01-4 Vinyl chloride ND 1.0 ug/l





24 of 39

MC49161

33.6

SGS Accutest



VOA 8260 List


17060-07-0 1,2-Dichloroethane-D4 100% 101% 73-122%2037-26-5 Toluene-D8 103% 102% 84-119%460-00-4 4-Bromofluorobenzene 106% 106% 78-117%

(a) Analysis performed at SGS Accutest, Dayton, NJ.(b) Result is from Run# 2


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MC49161

33.6

SGS Accutest





VOA 8260 List


67-64-1 Acetone ND 10 ug/l71-43-2 Benzene ND 0.50 ug/l108-86-1 Bromobenzene ND 1.0 ug/l74-97-5 Bromochloromethane ND 1.0 ug/l75-27-4 Bromodichloromethane ND 1.0 ug/l75-25-2 Bromoform ND 1.0 ug/l74-83-9 Bromomethane ND 2.0 ug/l78-93-3 2-Butanone (MEK) ND 10 ug/l104-51-8 n-Butylbenzene ND 2.0 ug/l135-98-8 sec-Butylbenzene ND 2.0 ug/l98-06-6 tert-Butylbenzene ND 2.0 ug/l75-15-0 Carbon disulfide ND 2.0 ug/l56-23-5 Carbon tetrachloride ND 1.0 ug/l108-90-7 Chlorobenzene ND 1.0 ug/l75-00-3 Chloroethane ND 1.0 ug/l67-66-3 Chloroform ND 1.0 ug/l74-87-3 Chloromethane ND 1.0 ug/l95-49-8 o-Chlorotoluene ND 2.0 ug/l106-43-4 p-Chlorotoluene ND 2.0 ug/l96-12-8 1,2-Dibromo-3-chloropropane ND 2.0 ug/l124-48-1 Dibromochloromethane ND 1.0 ug/l106-93-4 1,2-Dibromoethane ND 1.0 ug/l95-50-1 1,2-Dichlorobenzene ND 1.0 ug/l541-73-1 1,3-Dichlorobenzene ND 1.0 ug/l106-46-7 1,4-Dichlorobenzene ND 1.0 ug/l75-71-8 Dichlorodifluoromethane ND 2.0 ug/l75-34-3 1,1-Dichloroethane ND 1.0 ug/l107-06-2 1,2-Dichloroethane ND 1.0 ug/l75-35-4 1,1-Dichloroethene ND 1.0 ug/l156-59-2 cis-1,2-Dichloroethene 95.3 1.0 ug/l156-60-5 trans-1,2-Dichloroethene 34.7 1.0 ug/l78-87-5 1,2-Dichloropropane ND 1.0 ug/l


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MC49161

33.7

SGS Accutest



VOA 8260 List







27 of 39

MC49161

33.7

SGS Accutest



VOA 8260 List





28 of 39

MC49161

33.7

SGS Accutest


Client Sample ID: DUP-1 Lab Sample ID: MC49161-8 Date Sampled: 12/13/16 Matrix: AQ - Ground Water Date Received: 12/15/16 Method: SW846 8260C Percent Solids: n/a Project: Connor Homes, 1741 Route 7 South, Middlebury, VT



VOA 8260 List


67-64-1 Acetone ND 10 ug/l71-43-2 Benzene ND 0.50 ug/l108-86-1 Bromobenzene ND 1.0 ug/l74-97-5 Bromochloromethane ND 1.0 ug/l75-27-4 Bromodichloromethane ND 1.0 ug/l75-25-2 Bromoform ND 1.0 ug/l74-83-9 Bromomethane ND 2.0 ug/l78-93-3 2-Butanone (MEK) ND 10 ug/l104-51-8 n-Butylbenzene ND 2.0 ug/l135-98-8 sec-Butylbenzene ND 2.0 ug/l98-06-6 tert-Butylbenzene ND 2.0 ug/l75-15-0 Carbon disulfide ND 2.0 ug/l56-23-5 Carbon tetrachloride ND 1.0 ug/l108-90-7 Chlorobenzene ND 1.0 ug/l75-00-3 Chloroethane ND 1.0 ug/l67-66-3 Chloroform ND 1.0 ug/l74-87-3 Chloromethane ND 1.0 ug/l95-49-8 o-Chlorotoluene ND 2.0 ug/l106-43-4 p-Chlorotoluene ND 2.0 ug/l96-12-8 1,2-Dibromo-3-chloropropane ND 2.0 ug/l124-48-1 Dibromochloromethane ND 1.0 ug/l106-93-4 1,2-Dibromoethane ND 1.0 ug/l95-50-1 1,2-Dichlorobenzene ND 1.0 ug/l541-73-1 1,3-Dichlorobenzene ND 1.0 ug/l106-46-7 1,4-Dichlorobenzene ND 1.0 ug/l75-71-8 Dichlorodifluoromethane ND 2.0 ug/l75-34-3 1,1-Dichloroethane ND 1.0 ug/l107-06-2 1,2-Dichloroethane ND 1.0 ug/l75-35-4 1,1-Dichloroethene ND 1.0 ug/l156-59-2 cis-1,2-Dichloroethene 100 1.0 ug/l156-60-5 trans-1,2-Dichloroethene 34.9 1.0 ug/l78-87-5 1,2-Dichloropropane ND 1.0 ug/l


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MC49161

33.8

SGS Accutest



VOA 8260 List







30 of 39

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33.8

SGS Accutest



VOA 8260 List





31 of 39

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33.8

SGS Accutest


Client Sample ID: TRIP BLANK Lab Sample ID: MC49161-9 Date Sampled: 12/01/16 Matrix: AQ - Trip Blank Water Date Received: 12/15/16 Method: SW846 8260C Percent Solids: n/a Project: Connor Homes, 1741 Route 7 South, Middlebury, VT



VOA 8260 List


67-64-1 Acetone ND 10 ug/l71-43-2 Benzene ND 0.50 ug/l108-86-1 Bromobenzene ND 1.0 ug/l74-97-5 Bromochloromethane ND 1.0 ug/l75-27-4 Bromodichloromethane ND 1.0 ug/l75-25-2 Bromoform ND 1.0 ug/l74-83-9 Bromomethane ND 2.0 ug/l78-93-3 2-Butanone (MEK) ND 10 ug/l104-51-8 n-Butylbenzene ND 2.0 ug/l135-98-8 sec-Butylbenzene ND 2.0 ug/l98-06-6 tert-Butylbenzene ND 2.0 ug/l75-15-0 Carbon disulfide ND 2.0 ug/l56-23-5 Carbon tetrachloride ND 1.0 ug/l108-90-7 Chlorobenzene ND 1.0 ug/l75-00-3 Chloroethane ND 1.0 ug/l67-66-3 Chloroform ND 1.0 ug/l74-87-3 Chloromethane ND 1.0 ug/l95-49-8 o-Chlorotoluene ND 2.0 ug/l106-43-4 p-Chlorotoluene ND 2.0 ug/l96-12-8 1,2-Dibromo-3-chloropropane ND 2.0 ug/l124-48-1 Dibromochloromethane ND 1.0 ug/l106-93-4 1,2-Dibromoethane ND 1.0 ug/l95-50-1 1,2-Dichlorobenzene ND 1.0 ug/l541-73-1 1,3-Dichlorobenzene ND 1.0 ug/l106-46-7 1,4-Dichlorobenzene ND 1.0 ug/l75-71-8 Dichlorodifluoromethane ND 2.0 ug/l75-34-3 1,1-Dichloroethane ND 1.0 ug/l107-06-2 1,2-Dichloroethane ND 1.0 ug/l75-35-4 1,1-Dichloroethene ND 1.0 ug/l156-59-2 cis-1,2-Dichloroethene ND 1.0 ug/l156-60-5 trans-1,2-Dichloroethene ND 1.0 ug/l78-87-5 1,2-Dichloropropane ND 1.0 ug/l


32 of 39

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33.9

SGS Accutest



VOA 8260 List


142-28-9 1,3-Dichloropropane ND 1.0 ug/l594-20-7 2,2-Dichloropropane ND 1.0 ug/l563-58-6 1,1-Dichloropropene ND 1.0 ug/l10061-01-5 cis-1,3-Dichloropropene ND 1.0 ug/l10061-02-6 trans-1,3-Dichloropropene ND 1.0 ug/l100-41-4 Ethylbenzene ND 1.0 ug/l87-68-3 Hexachlorobutadiene ND 2.0 ug/l591-78-6 2-Hexanone ND 5.0 ug/l74-88-4 Iodomethane ND 2.0 ug/l98-82-8 Isopropylbenzene ND 1.0 ug/l99-87-6 p-Isopropyltoluene ND 2.0 ug/l1634-04-4 Methyl Tert Butyl Ether ND 1.0 ug/l108-10-1 4-Methyl-2-pentanone(MIBK) ND 5.0 ug/l74-95-3 Methylene bromide ND 1.0 ug/l75-09-2 Methylene chloride ND 2.0 ug/l91-20-3 Naphthalene ND 5.0 ug/l103-65-1 n-Propylbenzene ND 2.0 ug/l100-42-5 Styrene ND 1.0 ug/l630-20-6 1,1,1,2-Tetrachloroethane ND 1.0 ug/l79-34-5 1,1,2,2-Tetrachloroethane ND 1.0 ug/l127-18-4 Tetrachloroethene ND 1.0 ug/l108-88-3 Toluene ND 1.0 ug/l87-61-6 1,2,3-Trichlorobenzene ND 1.0 ug/l120-82-1 1,2,4-Trichlorobenzene ND 1.0 ug/l71-55-6 1,1,1-Trichloroethane ND 1.0 ug/l79-00-5 1,1,2-Trichloroethane ND 1.0 ug/l79-01-6 Trichloroethene ND 1.0 ug/l75-69-4 Trichlorofluoromethane ND 2.0 ug/l96-18-4 1,2,3-Trichloropropane ND 2.0 ug/l95-63-6 1,2,4-Trimethylbenzene ND 2.0 ug/l108-67-8 1,3,5-Trimethylbenzene ND 2.0 ug/l108-05-4 Vinyl Acetate ND 10 ug/l75-01-4 Vinyl chloride ND 1.0 ug/l





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33.9

SGS Accutest



VOA 8260 List





34 of 39

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SGS Accutest

Misc. Forms

Custody Documents and Other Forms

Includes the following where applicable:

• Chain of Custody• Chain of Custody (SGS Accutest New Jersey)


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4

MC49161: Chain of CustodyPage 1 of 2

36 of 39

MC49161

44.1

SGS Accutest Sample Receipt Summary

Job Number: MC49161 Client: DUBOIS & KING

Date / Time Received: 12/15/2016 8:15:00 AM Delivery Method: FEDEX

Project: CONNOR HOMES

4. No. Coolers: 1

Airbill #'s: 810982253040

Cooler Security

1. Custody Seals Present:

Y or N

2. Custody Seals Intact:

3. COC Present:

4. Smpl Dates/Time OK

2. Thermometer ID:

Cooler Temperature Y or N

1. Temp criteria achieved:

3. Cooler media:

IRGUN1;

Ice (Bag)

Quality Control Preservation Y or N N/A

1. Trip Blank present / cooler:

2. Trip Blank listed on COC:

3. Samples preserved properly:

4. VOCs headspace free:

Sample Integrity - Documentation Y or N

1. Sample labels present on bottles:

2. Container labeling complete:

3. Sample container label / COC agree:

Sample Integrity - Condition Y or N

1. Sample recvd within HT:

3. Condition of sample:

2. All containers accounted for:

Sample Integrity - Instructions

1. Analysis requested is clear:

2. Bottles received for unspecified tests

3. Sufficient volume recvd for analysis:

4. Compositing instructions clear:

5. Filtering instructions clear:

Intact

Y or N

Comments

Y or N N/A

Cooler Temps (Initial/Adjusted): #1: (3.9/3.9);


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44.1


SGS Accutest New Jersey

38 of 39

MC49161

44.2


Job Number: MC49161 Client:

Date / Time Received: 12/16/2016 7:00:00 AM Delivery Method:

Project:

4. No. Coolers: 1

Airbill #'s:

Cooler Security


Y or N


3. COC Present:


2. Cooler temp verification:



3. Cooler media:

IR Gun

Ice (Bag)




















Intact

Y or N

Comments

Y or N N/A

Cooler Temps (Raw Measured) °C:

Cooler Temps (Corrected) °C:

Cooler 1: (0.1);

Cooler 1: (1.5);

SM089-02Rev. Date 12/1/16


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MC49161

44.2

APPENDIX D

07/20/16


DuBois & King, Inc.


223088P


Sampling Date: 07/12/16

Report to:

Dubois & King, Inc.28 North Main StreetRandolph, VT [email protected]



Certifications: MA (M-MA136,SW846 NELAC) CT (PH-0109) NH (250210) RI (00071) ME (MA00136) FL (E87579)

NY (11791) NJ (MA926) PA (6801121) ND (R-188) CO MN (11546AA) NC (653) IL (002337) WI (399080220)




New England • 50 Deangelo Drive • Building 1 • Marlborough, MA 01752 • tel: 508-481-6200 • fax: 508-481-7753 • http://www.accutest.com








9


1 of 9

MC46822


Sections:


3.1: MC46822-1: DMH-2 .................................................................................................... 6Section 4: Misc. Forms ............................................................................................................ 7

4.1: Chain of Custody ........................................................................................................... 8

12

34

2 of 9

MC46822

SGS Accutest

Sample Summary




MC46822-1 07/12/16 16:05 CJ 07/13/16 AQ Ground Water DMH-2

3 of 9

MC46822

1

Summary of Hits Page 1 of 1 Job Number: MC46822Account: DuBois & King, Inc.Project: Connor Homes, 1741 Route 7 South, Middlebury, VTCollected: 07/12/16


MC46822-1 DMH-2


4 of 9

MC46822

2

SGS Accutest

Sample Results

Report of Analysis


5 of 9

MC46822

3

SGS Accutest


Client Sample ID: DMH-2 Lab Sample ID: MC46822-1 Date Sampled: 07/12/16 Matrix: AQ - Ground Water Date Received: 07/13/16 Method: SW846 8260C Percent Solids: n/a Project: Connor Homes, 1741 Route 7 South, Middlebury, VT

File ID DF Analyzed By Prep Date Prep Batch Analytical BatchRun #1 P87899.D 1 07/18/16 CB n/a n/a MSP2900Run #2



79-01-6 Trichloroethene ND 1.0 ug/l


1868-53-7 Dibromofluoromethane 100% 76-129%2037-26-5 Toluene-D8 97% 83-114%460-00-4 4-Bromofluorobenzene 103% 75-124%


6 of 9

MC46822

33.1

SGS Accutest

Misc. Forms



• Chain of Custody


7 of 9

MC46822

4


8 of 9

MC46822

44.1


Job Number: MC46822 Client: DUBOIS & KING, INC

Date / Time Received: 7/13/2016 7:40:00 AM Delivery Method: FedEx


4. No. Coolers: 1

Airbill #'s: 8066 2952 6352

Cooler Security


Y or N


3. COC Present:


2. Thermometer ID:



3. Cooler media:

IRGUN1;

Ice (Bag)




















Intact

Y or N

Comments

Y or N N/A



9 of 9

MC46822

44.1

08/09/16


DuBois & King, Inc.


223083P



Report to:

Dubois & King, Inc.28 North Main StreetRandolph, VT [email protected]



Certifications: MA (M-MA136,SW846 NELAC) CT (PH-0109) NH (250210) RI (00071) ME (MA00136) FL (E87579)

NY (11791) NJ (MA926) PA (6801121) ND (R-188) CO MN (11546AA) NC (653) IL (002337) WI (399080220)




New England • 50 Deangelo Drive • Building 1 • Marlborough, MA 01752 • tel: 508-481-6200 • fax: 508-481-7753 • http://www.accutest.com








9


1 of 9

MC47136


Sections:



4.1: Chain of Custody ........................................................................................................... 8

12

34

2 of 9

MC47136

SGS Accutest

Sample Summary





3 of 9

MC47136

1



MC47136-1 DMH-2


4 of 9

MC47136

2

SGS Accutest

Sample Results

Report of Analysis


5 of 9

MC47136

3

SGS Accutest



File ID DF Analyzed By Prep Date Prep Batch Analytical BatchRun #1 P88226.D 1 08/04/16 AD n/a n/a MSP2914Run #2







6 of 9

MC47136

33.1

SGS Accutest

Misc. Forms





7 of 9

MC47136

4


8 of 9

MC47136

44.1


Job Number: MC47136 Client: DVBAIS+KING INC


Project: CONNER

4. No. Coolers: 1

Airbill #'s:

Cooler Security


Y or N


3. COC Present:


2. Thermometer ID:



3. Cooler media:

IRGUN1;

Ice (Bag)




















Intact

Y or N

Comments

Y or N N/A



9 of 9

MC47136

44.1

09/23/16


DuBois & King, Inc.


223088P


Sampling Dates: 09/14/16 - 09/16/16

Report to:

















14


1 of 14

MC47850


Sections:


3.1: MC47850-1: DMH-2 .................................................................................................... 63.2: MC47850-2: DMH-LD ................................................................................................. 9

Section 4: Misc. Forms ............................................................................................................ 124.1: Chain of Custody ........................................................................................................... 13

12

34

2 of 14

MC47850

SGS Accutest

Sample Summary





MC47850-2 09/16/16 10:15 CJ 09/17/16 AQ Ground Water DMH-LD

3 of 14

MC47850

1



MC47850-1 DMH-2

cis-1,2-Dichloroethene 4.3 1.0 ug/l SW846 8260CVinyl chloride 1.8 1.0 ug/l SW846 8260C

MC47850-2 DMH-LD

1,1-Dichloroethane 15.1 2.0 ug/l SW846 8260C1,1-Dichloroethene 2.4 2.0 ug/l SW846 8260Ccis-1,2-Dichloroethene 186 2.0 ug/l SW846 8260Ctrans-1,2-Dichloroethene 2.6 2.0 ug/l SW846 8260C1,1,1-Trichloroethane 15.1 2.0 ug/l SW846 8260CVinyl chloride 245 2.0 ug/l SW846 8260C

4 of 14

MC47850

2

SGS Accutest

Sample Results

Report of Analysis


5 of 14

MC47850

3

SGS Accutest



File ID DF Analyzed By Prep Date Prep Batch Analytical BatchRun #1 K100033.D 1 09/19/16 AD n/a n/a MSK3096Run #2


VOA 8260 List


67-64-1 Acetone ND 10 ug/l71-43-2 Benzene ND 0.50 ug/l108-86-1 Bromobenzene ND 5.0 ug/l74-97-5 Bromochloromethane ND 5.0 ug/l75-27-4 Bromodichloromethane ND 1.0 ug/l75-25-2 Bromoform ND 1.0 ug/l74-83-9 Bromomethane ND 2.0 ug/l78-93-3 2-Butanone (MEK) ND 10 ug/l104-51-8 n-Butylbenzene ND 5.0 ug/l135-98-8 sec-Butylbenzene ND 5.0 ug/l98-06-6 tert-Butylbenzene ND 5.0 ug/l75-15-0 Carbon disulfide ND 5.0 ug/l56-23-5 Carbon tetrachloride ND 1.0 ug/l108-90-7 Chlorobenzene ND 1.0 ug/l75-00-3 Chloroethane ND 2.0 ug/l67-66-3 Chloroform ND 1.0 ug/l74-87-3 Chloromethane ND 2.0 ug/l95-49-8 o-Chlorotoluene ND 5.0 ug/l106-43-4 p-Chlorotoluene ND 5.0 ug/l96-12-8 1,2-Dibromo-3-chloropropane ND 5.0 ug/l124-48-1 Dibromochloromethane ND 1.0 ug/l106-93-4 1,2-Dibromoethane ND 1.0 ug/l95-50-1 1,2-Dichlorobenzene ND 1.0 ug/l541-73-1 1,3-Dichlorobenzene ND 1.0 ug/l106-46-7 1,4-Dichlorobenzene ND 1.0 ug/l75-71-8 Dichlorodifluoromethane ND 2.0 ug/l75-34-3 1,1-Dichloroethane ND 1.0 ug/l107-06-2 1,2-Dichloroethane ND 1.0 ug/l75-35-4 1,1-Dichloroethene ND 1.0 ug/l156-59-2 cis-1,2-Dichloroethene 4.3 1.0 ug/l156-60-5 trans-1,2-Dichloroethene ND 1.0 ug/l78-87-5 1,2-Dichloropropane ND 2.0 ug/l


6 of 14

MC47850

33.1

SGS Accutest



VOA 8260 List


142-28-9 1,3-Dichloropropane ND 5.0 ug/l594-20-7 2,2-Dichloropropane ND 5.0 ug/l563-58-6 1,1-Dichloropropene ND 5.0 ug/l10061-01-5 cis-1,3-Dichloropropene ND 0.50 ug/l10061-02-6 trans-1,3-Dichloropropene ND 0.50 ug/l100-41-4 Ethylbenzene ND 1.0 ug/l87-68-3 Hexachlorobutadiene ND 5.0 ug/l591-78-6 2-Hexanone ND 10 ug/l74-88-4 Iodomethane ND 5.0 ug/l98-82-8 Isopropylbenzene ND 5.0 ug/l99-87-6 p-Isopropyltoluene ND 5.0 ug/l1634-04-4 Methyl Tert Butyl Ether ND 1.0 ug/l108-10-1 4-Methyl-2-pentanone (MIBK) ND 5.0 ug/l74-95-3 Methylene bromide ND 5.0 ug/l75-09-2 Methylene chloride ND 2.0 ug/l91-20-3 Naphthalene ND 5.0 ug/l103-65-1 n-Propylbenzene ND 5.0 ug/l100-42-5 Styrene ND 5.0 ug/l630-20-6 1,1,1,2-Tetrachloroethane ND 1.0 ug/l79-34-5 1,1,2,2-Tetrachloroethane ND 0.50 ug/l127-18-4 Tetrachloroethene ND 1.0 ug/l108-88-3 Toluene ND 1.0 ug/l87-61-6 1,2,3-Trichlorobenzene ND 5.0 ug/l120-82-1 1,2,4-Trichlorobenzene ND 5.0 ug/l71-55-6 1,1,1-Trichloroethane ND 1.0 ug/l79-00-5 1,1,2-Trichloroethane ND 1.0 ug/l79-01-6 Trichloroethene ND 1.0 ug/l75-69-4 Trichlorofluoromethane ND 1.0 ug/l96-18-4 1,2,3-Trichloropropane ND 5.0 ug/l95-63-6 1,2,4-Trimethylbenzene ND 5.0 ug/l108-67-8 1,3,5-Trimethylbenzene ND 5.0 ug/l108-05-4 Vinyl Acetate ND 5.0 ug/l75-01-4 Vinyl chloride 1.8 1.0 ug/l





7 of 14

MC47850

33.1

SGS Accutest



VOA 8260 List


2037-26-5 Toluene-D8 96% 83-114%460-00-4 4-Bromofluorobenzene 100% 75-124%


8 of 14

MC47850

33.1

SGS Accutest


Client Sample ID: DMH-LD Lab Sample ID: MC47850-2 Date Sampled: 09/16/16 Matrix: AQ - Ground Water Date Received: 09/17/16 Method: SW846 8260C Percent Solids: n/a Project: Connor Homes, 1741 Route 7 South, Middlebury, VT



VOA 8260 List


67-64-1 Acetone ND 20 ug/l71-43-2 Benzene ND 1.0 ug/l108-86-1 Bromobenzene ND 10 ug/l74-97-5 Bromochloromethane ND 10 ug/l75-27-4 Bromodichloromethane ND 2.0 ug/l75-25-2 Bromoform ND 2.0 ug/l74-83-9 Bromomethane ND 4.0 ug/l78-93-3 2-Butanone (MEK) ND 20 ug/l104-51-8 n-Butylbenzene ND 10 ug/l135-98-8 sec-Butylbenzene ND 10 ug/l98-06-6 tert-Butylbenzene ND 10 ug/l75-15-0 Carbon disulfide ND 10 ug/l56-23-5 Carbon tetrachloride ND 2.0 ug/l108-90-7 Chlorobenzene ND 2.0 ug/l75-00-3 Chloroethane ND 4.0 ug/l67-66-3 Chloroform ND 2.0 ug/l74-87-3 Chloromethane ND 4.0 ug/l95-49-8 o-Chlorotoluene ND 10 ug/l106-43-4 p-Chlorotoluene ND 10 ug/l96-12-8 1,2-Dibromo-3-chloropropane ND 10 ug/l124-48-1 Dibromochloromethane ND 2.0 ug/l106-93-4 1,2-Dibromoethane ND 2.0 ug/l95-50-1 1,2-Dichlorobenzene ND 2.0 ug/l541-73-1 1,3-Dichlorobenzene ND 2.0 ug/l106-46-7 1,4-Dichlorobenzene ND 2.0 ug/l75-71-8 Dichlorodifluoromethane ND 4.0 ug/l75-34-3 1,1-Dichloroethane 15.1 2.0 ug/l107-06-2 1,2-Dichloroethane ND 2.0 ug/l75-35-4 1,1-Dichloroethene 2.4 2.0 ug/l156-59-2 cis-1,2-Dichloroethene 186 2.0 ug/l156-60-5 trans-1,2-Dichloroethene 2.6 2.0 ug/l78-87-5 1,2-Dichloropropane ND 4.0 ug/l


9 of 14

MC47850

33.2

SGS Accutest



VOA 8260 List


142-28-9 1,3-Dichloropropane ND 10 ug/l594-20-7 2,2-Dichloropropane ND 10 ug/l563-58-6 1,1-Dichloropropene ND 10 ug/l10061-01-5 cis-1,3-Dichloropropene ND 1.0 ug/l10061-02-6 trans-1,3-Dichloropropene ND 1.0 ug/l100-41-4 Ethylbenzene ND 2.0 ug/l87-68-3 Hexachlorobutadiene ND 10 ug/l591-78-6 2-Hexanone ND 20 ug/l74-88-4 Iodomethane ND 10 ug/l98-82-8 Isopropylbenzene ND 10 ug/l99-87-6 p-Isopropyltoluene ND 10 ug/l1634-04-4 Methyl Tert Butyl Ether ND 2.0 ug/l108-10-1 4-Methyl-2-pentanone (MIBK) ND 10 ug/l74-95-3 Methylene bromide ND 10 ug/l75-09-2 Methylene chloride ND 4.0 ug/l91-20-3 Naphthalene ND 10 ug/l103-65-1 n-Propylbenzene ND 10 ug/l100-42-5 Styrene ND 10 ug/l630-20-6 1,1,1,2-Tetrachloroethane ND 2.0 ug/l79-34-5 1,1,2,2-Tetrachloroethane ND 1.0 ug/l127-18-4 Tetrachloroethene ND 2.0 ug/l108-88-3 Toluene ND 2.0 ug/l87-61-6 1,2,3-Trichlorobenzene ND 10 ug/l120-82-1 1,2,4-Trichlorobenzene ND 10 ug/l71-55-6 1,1,1-Trichloroethane 15.1 2.0 ug/l79-00-5 1,1,2-Trichloroethane ND 2.0 ug/l79-01-6 Trichloroethene ND 2.0 ug/l75-69-4 Trichlorofluoromethane ND 2.0 ug/l96-18-4 1,2,3-Trichloropropane ND 10 ug/l95-63-6 1,2,4-Trimethylbenzene ND 10 ug/l108-67-8 1,3,5-Trimethylbenzene ND 10 ug/l108-05-4 Vinyl Acetate ND 10 ug/l75-01-4 Vinyl chloride 245 2.0 ug/l





10 of 14

MC47850

33.2

SGS Accutest



VOA 8260 List




11 of 14

MC47850

33.2

SGS Accutest

Misc. Forms





12 of 14

MC47850

4


13 of 14

MC47850

44.1


Job Number: MC47850 Client: DUBOIS+KING.INC



4. No. Coolers: 1

Airbill #'s: 8066 2953 1292

Cooler Security


Y or N


3. COC Present:


2. Thermometer ID:



3. Cooler media:

IRGUN1;

Ice (Bag)




















Intact

Y or N

Comments

Y or N N/A



14 of 14

MC47850

44.1

10/24/16


DuBois & King, Inc.


223088P



Report to:

















9


1 of 9

MC48301


Sections:



4.1: Chain of Custody ........................................................................................................... 8

12

34

2 of 9

MC48301

SGS Accutest

Sample Summary




MC48301-1 10/13/16 10:25 AS 10/15/16 AQ Ground Water DMH-2

3 of 9

MC48301

1



MC48301-1 DMH-2


4 of 9

MC48301

2

SGS Accutest

Sample Results

Report of Analysis


5 of 9

MC48301

3

SGS Accutest










6 of 9

MC48301

33.1

SGS Accutest

Misc. Forms





7 of 9

MC48301

4


8 of 9

MC48301

44.1


Job Number: MC48301 Client: DUBOIS

Date / Time Received: 10/15/2016 10:00:00 AM Delivery Method: FEDX


4. No. Coolers: 1

Airbill #'s: 81025469

Cooler Security


Y or N


3. COC Present:


2. Thermometer ID:



3. Cooler media:

IRGUN1;

Ice (Bag)




















Intact

Y or N

Comments

Y or N N/A



9 of 9

MC48301

44.1

12/02/16


DuBois & King, Inc.


223088P



Report to:

















9


1 of 9

MC48884


Sections:



4.1: Chain of Custody ........................................................................................................... 8

12

34

2 of 9

MC48884

SGS Accutest

Sample Summary




MC48884-1 11/22/16 10:34 AJS 11/23/16 AQ Water DMH-2

3 of 9

MC48884

1



MC48884-1 DMH-2

Trichloroethene 2.4 1.0 ug/l SW846 8260C

4 of 9

MC48884

2

SGS Accutest

Sample Results

Report of Analysis


5 of 9

MC48884

3

SGS Accutest


Client Sample ID: DMH-2 Lab Sample ID: MC48884-1 Date Sampled: 11/22/16 Matrix: AQ - Water Date Received: 11/23/16 Method: SW846 8260C Percent Solids: n/a Project: Connor Homes, 1741 Route 7 South, Middlebury, VT




79-01-6 Trichloroethene 2.4 1.0 ug/l




6 of 9

MC48884

33.1

SGS Accutest

Misc. Forms





7 of 9

MC48884

4


8 of 9

MC48884

44.1


Job Number: MC48884 Client: DUBOIS KING

Date / Time Received: 11/23/2016 10:30:00 AM Delivery Method: Fed Ex


4. No. Coolers: 1

Airbill #'s: 8106 0938 2299

Cooler Security


Y or N


3. COC Present:


2. Thermometer ID:



3. Cooler media:

IRGUN1;

Ice (Bag)




















Intact

Y or N

Comments

Y or N N/A



9 of 9

MC48884

44.1

01/09/17


DuBois & King, Inc.


223088



Report to:

[email protected]@dubois-king.com; [email protected]















16


1 of 16

MC49283


Sections:


3.1: MC49283-1: DMH-2 .................................................................................................... 63.2: MC49283-2: DMH-LD ................................................................................................. 9

Section 4: Misc. Forms ............................................................................................................ 124.1: Chain of Custody ........................................................................................................... 13

12

34

2 of 16

MC49283

SGS Accutest

Sample Summary


Connor Homes, 1741 Route 7 South, Middlebury, VTProject No: 223088


MC49283-1 12/29/16 09:26 AS 12/30/16 AQ Water DMH-2

MC49283-2 12/29/16 09:00 AS 12/30/16 AQ Water DMH-LD

3 of 16

MC49283

1



MC49283-1 DMH-2


MC49283-2 DMH-LD

1,1-Dichloroethane 6.4 1.0 ug/l SW846 8260C1,1-Dichloroethene 8.8 1.0 ug/l SW846 8260Ccis-1,2-Dichloroethene 241 10 ug/l SW846 8260C1,1,1-Trichloroethane 32.9 1.0 ug/l SW846 8260CTrichloroethene 616 10 ug/l SW846 8260CTrichlorofluoromethane 3.6 1.0 ug/l SW846 8260C1,2,4-Trimethylbenzene 4.8 1.0 ug/l SW846 8260C1,3,5-Trimethylbenzene 1.6 1.0 ug/l SW846 8260CVinyl chloride 50.1 1.0 ug/l SW846 8260Cm,p-Xylene 1.7 1.0 ug/l SW846 8260Co-Xylene 2.6 1.0 ug/l SW846 8260CXylene (total) 4.3 1.0 ug/l SW846 8260C

4 of 16

MC49283

2

SGS Accutest

Sample Results

Report of Analysis


5 of 16

MC49283

3

SGS Accutest



File ID DF Analyzed By Prep Date Prep Batch Analytical BatchRun #1 V52270.D 1 01/04/17 DRY n/a n/a MSV1936Run #2


VOA 8260 List


67-64-1 Acetone ND 10 ug/l71-43-2 Benzene ND 0.50 ug/l108-86-1 Bromobenzene ND 5.0 ug/l74-97-5 Bromochloromethane ND 5.0 ug/l75-27-4 Bromodichloromethane ND 1.0 ug/l75-25-2 Bromoform ND 1.0 ug/l74-83-9 Bromomethane ND 2.0 ug/l78-93-3 2-Butanone (MEK) ND 10 ug/l104-51-8 n-Butylbenzene ND 5.0 ug/l135-98-8 sec-Butylbenzene ND 5.0 ug/l98-06-6 tert-Butylbenzene ND 5.0 ug/l75-15-0 Carbon disulfide ND 5.0 ug/l56-23-5 Carbon tetrachloride ND 1.0 ug/l108-90-7 Chlorobenzene ND 1.0 ug/l75-00-3 Chloroethane ND 2.0 ug/l67-66-3 Chloroform ND 1.0 ug/l74-87-3 Chloromethane ND 2.0 ug/l95-49-8 o-Chlorotoluene ND 5.0 ug/l106-43-4 p-Chlorotoluene ND 5.0 ug/l96-12-8 1,2-Dibromo-3-chloropropane ND 5.0 ug/l124-48-1 Dibromochloromethane ND 1.0 ug/l106-93-4 1,2-Dibromoethane ND 1.0 ug/l95-50-1 1,2-Dichlorobenzene ND 1.0 ug/l541-73-1 1,3-Dichlorobenzene ND 1.0 ug/l106-46-7 1,4-Dichlorobenzene ND 1.0 ug/l75-71-8 Dichlorodifluoromethane ND 2.0 ug/l75-34-3 1,1-Dichloroethane ND 1.0 ug/l107-06-2 1,2-Dichloroethane ND 1.0 ug/l75-35-4 1,1-Dichloroethene ND 1.0 ug/l156-59-2 cis-1,2-Dichloroethene ND 1.0 ug/l156-60-5 trans-1,2-Dichloroethene ND 1.0 ug/l78-87-5 1,2-Dichloropropane ND 2.0 ug/l


6 of 16

MC49283

33.1

SGS Accutest



VOA 8260 List


142-28-9 1,3-Dichloropropane ND 5.0 ug/l594-20-7 2,2-Dichloropropane ND 5.0 ug/l563-58-6 1,1-Dichloropropene ND 5.0 ug/l10061-01-5 cis-1,3-Dichloropropene ND 0.50 ug/l10061-02-6 trans-1,3-Dichloropropene ND 0.50 ug/l100-41-4 Ethylbenzene ND 1.0 ug/l87-68-3 Hexachlorobutadiene ND 5.0 ug/l591-78-6 2-Hexanone ND 10 ug/l74-88-4 Iodomethane ND 5.0 ug/l98-82-8 Isopropylbenzene ND 5.0 ug/l99-87-6 p-Isopropyltoluene ND 5.0 ug/l1634-04-4 Methyl Tert Butyl Ether ND 1.0 ug/l108-10-1 4-Methyl-2-pentanone (MIBK) ND 5.0 ug/l74-95-3 Methylene bromide ND 5.0 ug/l75-09-2 Methylene chloride ND 2.0 ug/l91-20-3 Naphthalene a ND 5.0 ug/l103-65-1 n-Propylbenzene ND 5.0 ug/l100-42-5 Styrene ND 5.0 ug/l630-20-6 1,1,1,2-Tetrachloroethane ND 1.0 ug/l79-34-5 1,1,2,2-Tetrachloroethane ND 0.50 ug/l127-18-4 Tetrachloroethene ND 1.0 ug/l108-88-3 Toluene ND 1.0 ug/l87-61-6 1,2,3-Trichlorobenzene ND 5.0 ug/l120-82-1 1,2,4-Trichlorobenzene ND 5.0 ug/l71-55-6 1,1,1-Trichloroethane ND 1.0 ug/l79-00-5 1,1,2-Trichloroethane ND 1.0 ug/l79-01-6 Trichloroethene ND 1.0 ug/l75-69-4 Trichlorofluoromethane ND 1.0 ug/l96-18-4 1,2,3-Trichloropropane ND 5.0 ug/l95-63-6 1,2,4-Trimethylbenzene ND 1.0 ug/l108-67-8 1,3,5-Trimethylbenzene ND 1.0 ug/l108-05-4 Vinyl Acetate ND 5.0 ug/l75-01-4 Vinyl chloride ND 1.0 ug/l





7 of 16

MC49283

33.1

SGS Accutest



VOA 8260 List



(a) Continuing Calibration outside of acceptance criteria. Reporting Limit response verified by low-levelstandard.


8 of 16

MC49283

33.1

SGS Accutest


Client Sample ID: DMH-LD Lab Sample ID: MC49283-2 Date Sampled: 12/29/16 Matrix: AQ - Water Date Received: 12/30/16 Method: SW846 8260C Percent Solids: n/a Project: Connor Homes, 1741 Route 7 South, Middlebury, VT

File ID DF Analyzed By Prep Date Prep Batch Analytical BatchRun #1 V52244.D 1 01/03/17 DRY n/a n/a MSV1935Run #2 V52281.D 10 01/04/17 DRY n/a n/a MSV1936


VOA 8260 List


67-64-1 Acetone ND 10 ug/l71-43-2 Benzene ND 0.50 ug/l108-86-1 Bromobenzene ND 5.0 ug/l74-97-5 Bromochloromethane ND 5.0 ug/l75-27-4 Bromodichloromethane ND 1.0 ug/l75-25-2 Bromoform ND 1.0 ug/l74-83-9 Bromomethane ND 2.0 ug/l78-93-3 2-Butanone (MEK) ND 10 ug/l104-51-8 n-Butylbenzene ND 5.0 ug/l135-98-8 sec-Butylbenzene ND 5.0 ug/l98-06-6 tert-Butylbenzene ND 5.0 ug/l75-15-0 Carbon disulfide ND 5.0 ug/l56-23-5 Carbon tetrachloride ND 1.0 ug/l108-90-7 Chlorobenzene ND 1.0 ug/l75-00-3 Chloroethane ND 2.0 ug/l67-66-3 Chloroform ND 1.0 ug/l74-87-3 Chloromethane ND 2.0 ug/l95-49-8 o-Chlorotoluene ND 5.0 ug/l106-43-4 p-Chlorotoluene ND 5.0 ug/l96-12-8 1,2-Dibromo-3-chloropropane ND 5.0 ug/l124-48-1 Dibromochloromethane ND 1.0 ug/l106-93-4 1,2-Dibromoethane ND 1.0 ug/l95-50-1 1,2-Dichlorobenzene ND 1.0 ug/l541-73-1 1,3-Dichlorobenzene ND 1.0 ug/l106-46-7 1,4-Dichlorobenzene ND 1.0 ug/l75-71-8 Dichlorodifluoromethane ND 2.0 ug/l75-34-3 1,1-Dichloroethane 6.4 1.0 ug/l107-06-2 1,2-Dichloroethane ND 1.0 ug/l75-35-4 1,1-Dichloroethene 8.8 1.0 ug/l156-59-2 cis-1,2-Dichloroethene 241 a 10 ug/l156-60-5 trans-1,2-Dichloroethene ND 1.0 ug/l78-87-5 1,2-Dichloropropane ND 2.0 ug/l


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33.2

SGS Accutest



VOA 8260 List


142-28-9 1,3-Dichloropropane ND 5.0 ug/l594-20-7 2,2-Dichloropropane ND 5.0 ug/l563-58-6 1,1-Dichloropropene ND 5.0 ug/l10061-01-5 cis-1,3-Dichloropropene ND 0.50 ug/l10061-02-6 trans-1,3-Dichloropropene ND 0.50 ug/l100-41-4 Ethylbenzene ND 1.0 ug/l87-68-3 Hexachlorobutadiene ND 5.0 ug/l591-78-6 2-Hexanone ND 10 ug/l74-88-4 Iodomethane ND 5.0 ug/l98-82-8 Isopropylbenzene ND 5.0 ug/l99-87-6 p-Isopropyltoluene ND 5.0 ug/l1634-04-4 Methyl Tert Butyl Ether ND 1.0 ug/l108-10-1 4-Methyl-2-pentanone (MIBK) ND 5.0 ug/l74-95-3 Methylene bromide ND 5.0 ug/l75-09-2 Methylene chloride ND 2.0 ug/l91-20-3 Naphthalene b ND 5.0 ug/l103-65-1 n-Propylbenzene ND 5.0 ug/l100-42-5 Styrene ND 5.0 ug/l630-20-6 1,1,1,2-Tetrachloroethane ND 1.0 ug/l79-34-5 1,1,2,2-Tetrachloroethane ND 0.50 ug/l127-18-4 Tetrachloroethene ND 1.0 ug/l108-88-3 Toluene ND 1.0 ug/l87-61-6 1,2,3-Trichlorobenzene ND 5.0 ug/l120-82-1 1,2,4-Trichlorobenzene ND 5.0 ug/l71-55-6 1,1,1-Trichloroethane 32.9 1.0 ug/l79-00-5 1,1,2-Trichloroethane ND 1.0 ug/l79-01-6 Trichloroethene 616 a 10 ug/l75-69-4 Trichlorofluoromethane 3.6 1.0 ug/l96-18-4 1,2,3-Trichloropropane ND 5.0 ug/l95-63-6 1,2,4-Trimethylbenzene 4.8 1.0 ug/l108-67-8 1,3,5-Trimethylbenzene 1.6 1.0 ug/l108-05-4 Vinyl Acetate ND 5.0 ug/l75-01-4 Vinyl chloride 50.1 1.0 ug/l

m,p-Xylene 1.7 1.0 ug/l95-47-6 o-Xylene 2.6 1.0 ug/l1330-20-7 Xylene (total) 4.3 1.0 ug/l




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SGS Accutest



VOA 8260 List


2037-26-5 Toluene-D8 99% 98% 83-114%460-00-4 4-Bromofluorobenzene 96% 100% 75-124%

(a) Result is from Run# 2(b) Continuing Calibration outside of acceptance criteria. Reporting Limit response verified by low-level

standard.


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SGS Accutest

Misc. Forms





12 of 16

MC49283

4


13 of 16

MC49283

44.1


14 of 16

MC49283

44.1


Job Number: MC49283 Client: DUBOIS & KING


Project: CONNER HOMES

Airbill #'s: 810609382288

Cooler Security


Y or N


3. COC Present:





3. Cooler media:

IRGUN1

Ice (Bag)

Quality Control Preservation Y










1. Sample rec'd within HT:






3. Sufficient volume rec'd for analysis:



Intact

Y or N

Comments

Analysis requested not checked off on COC.

N N/A Y N N/A


4. No. Coolers: 1


15 of 16

MC49283

44.1

Sample Receipt Summary - Problem Resolution

CSR: Rob Soll Response Date 1/3/2017

Response: Run 8260 for both samples, email on file.

Job Number: MC49283


16 of 16

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44.1

APPENDIX E

12/4/2012 12/12/2012 12/14/2012 12/26/2012 1/16/2013 1/30/2013 2/7/2013 2/28/2013 3/14/2013 3/28/2013

acetone 61.3 28.2 43.0 72.4 <5.0 19.6 21.3 22.9 7.1 7.5bromodichloromethane <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.02-butanone (MEK) <5.0 7.6 10.8 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0chloroform <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0dichlorodifluoromethane <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.01,1-dichloroethane <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.01,1-dichloroethene <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0cis-1,2-dichloroethene 27.1 31.2 30.1 4.3 12.4 35.4 6.8 64.8 16.1 26.2trans-1,2-dichloroethene <1.0 <1.0 <1.0 <1.0 5.6 <1.0 1.9 <1.0 3.4 9.2toluene <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 1.1 <1.0 <1.01,1,1-trichloroethane <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0trichloroethene 5.7 5.2 1.7 1.3 38.8 <1.0 8.2 5.9 21.3 66.8trichlorofluoromethane <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0vinyl chloride <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 1.0 <1.0 <1.0 <1.0xylene (total) <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 1.0 <1.0 15.2 <1.0

Total COC 94 72 86 78 57 55 40 95 63 110

4/8/2013 4/19/2013 5/8/2013 5/30/2013 6/10/2013 6/24/2013 7/12/2013 7/29/2013 8/13/2013 8/27/2013 9/12/2013 9/26/2013 10/10/2013 10/28/2013 11/14/2013 11/29/2013 12/9/2013 12/26/2013 1/7/2014 1/24/2014

acetone 11.2 <10 23 <10 <10 14.3 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10bromodichloromethane <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0bromomethane <2.0 7.1 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.02-butanone (MEK) 10.2 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0chloroform <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0chloromethane <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0dichlorodifluoromethane <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.01,1-dichloroethane <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.01,1-dichloroethene 2.9 1.2 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0cis-1,2-dichloroethene 47.4 72.4 90.7 45.5 25.8 5.7 15.6 <1.0 3.2 <1.0 <1.0 1.7 <1.0 <1.0 <1.0 2.2 <1.0 8.0 2.5 2.1trans-1,2-dichloroethene 1.4 5.8 <1.0 3.4 7.6 <1.0 13.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 2.8 <1.0 <1.0naphthalene 9.1 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0toluene <1.0 <1.0 <1.0 2.3 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.01,1,1-trichloroethane 3.6 4.7 2.1 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0trichloroethene 7.6 25.7 <1.0 17.4 51.7 4.3 58.4 2.7 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 1.1 3.3 19.4 7.7 5.9trichlorofluoromethane <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0vinyl chloride <1.0 <1.0 2.7 1.7 2.1 4.4 6.9 <1.0 4.7 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0xylene (total) <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0

Total COC 93 117 119 70 87 29 94 3 8 0 0 2 0 0 0 3 3 30 10 8

Connor HomesBoiler Room Sump

Diffuser Treatment System Effluent Sampling

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12/4/2012 12/26/2012 2/7/2013 3/28/2013 5/8/2013 6/24/2013 8/13/2013 9/26/2013 11/14/2013 12/26/2013 2/13/2014 3/24/2014 5/9/2014 6/17/2014 8/6/2014 9/23/2014 11/4/2014 1/9/2015 2/26/2015 4/2/2015 7/10/2015 10/21/2015 1/12/2016 4/6/2016 7/12/2016 10/13/2016

TCE

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DateTCE TCE Discharge Limit COC

B:\223088 Connor Homes\Water Quality and Elevation Trends.xlsx Page 1 of 3



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12/4/2012 12/26/2012 2/7/2013 3/28/2013 5/8/2013 6/24/2013 8/13/2013 9/26/2013 11/14/2013 12/26/2013 2/13/2014 3/24/2014 5/9/2014 6/17/2014 8/6/2014 9/23/2014 11/4/2014 1/9/2015 2/26/2015 4/2/2015 7/10/2015 10/21/2015 1/12/2016 4/6/2016 7/12/2016 10/13/2016

TCE

Con

cent

ratio

n(u

g/l)


2/13/2014 2/27/2014 3/6/2014 3/24/2014 4/2/2014 4/21/2014 5/9/2014 5/31/2014 6/9/2014 6/17/2014 7/11/2014 7/23/2014 8/6/2014 8/25/2014 9/11/2014 9/23/2014 10/9/2014 10/20/2014 11/4/2014 12/9/2014

acetone <10 <10 <10 <10 <10 104 33.5 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10 <10bromodichloromethane <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0bromomethane <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.02-butanone (MEK) <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0chloroform <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0chloromethane <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 12.3 4.2 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0dichlorodifluoromethane <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.01,1-dichloroethane <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.01,1-dichloroethene <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0cis-1,2-dichloroethene 1.2 9.4 <1.0 14.1 46.0 34.4 30.8 2.3 1.1 5.5 <1.0 <1.0 3.9 22.1 7.5 3 6.1 22.5 50.5 <1.0trans-1,2-dichloroethene <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 1.0 1.2 <1.0 1.3 <1.0 <1.0 <1.0 1.2 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0ethylbenzene <1.0 <1.0 <1.0 <1.0 1.2 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.04-methyl-2-pentanone (MIBK) <5.0 <5.0 <5.0 <5.0 <5.0 20.5 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0naphthalene <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0toluene <1.0 <1.0 <1.0 <1.0 3.7 1.6 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.01,1,1-trichloroethane <1.0 <1.0 <1.0 <1.0 1.7 1.2 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 1.3 <1.0trichloroethene <1.0 8.0 <1.0 13.3 54.1 21.4 4.8 7.9 1.3 5.6 <1.0 <1.0 <1.0 9.9 <1.0 <1.0 <1.0 5.4 4.5 <1.0trichlorofluoromethane <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0vinyl chloride <1.0 1.1 <1.0 1.6 3.6 1.0 1.7 <1.0 <1.0 2.6 <1.0 <1.0 1.4 2.6 1.4 <1.0 <1.0 2.2 4.0 <1.0xylene (total) <1.0 <1.0 3.3 <1.0 10.2 2.7 2.7 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0

Total COC 1.2 19 3 29 121 187 75 26 7 15 0 0 5 36 9 3 6 30 60 0

12/18/2014 1/9/2015 1/22/2015 2/16/2015 2/26/2015 3/13/2015 3/27/2015 4/2/2015 5/4/2015 6/2/2015 7/10/2015 8/20/2015 9/9/2015 10/21/2015 11/13/2015 12/8/2015 1/12/2016 2/8/2016 3/8/2016 4/6/2016

acetone <10 <10 <10 18.0 <10 <10 <10 <10 nt nt <10 <10 20 <10 nt <10 nt nt 11.4 ntbromodichloromethane <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 nt nt <1.0 <1.0 <1.0 <1.0 nt <1.0 nt nt <1.0 ntbromomethane <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 nt nt <2.0 <2.0 <2.0 <2.0 nt <2.0 nt nt <2.0 nt2-butanone (MEK) 14.6 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 nt nt <5.0 <5.0 <5.0 <5.0 nt <10 nt nt <10 ntchloroform <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 nt nt <1.0 <1.0 <1.0 <1.0 nt <1.0 nt nt <1.0 ntchloromethane <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 nt nt <2.0 <2.0 <2.0 <2.0 nt <2.0 nt nt <2.0 ntdichlorodifluoromethane <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 nt nt <2.0 <2.0 <2.0 <2.0 nt <2.0 nt nt <2.0 nt1,1-dichloroethane <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 nt nt <1.0 <1.0 <1.0 <1.0 nt <1.0 nt nt <1.0 nt1,1-dichloroethene <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 nt nt <1.0 <1.0 <1.0 <1.0 nt <1.0 nt nt <1.0 ntcis-1,2-dichloroethene <1.0 9.1 1.9 12.0 <1.0 42.5 44.3 33.3 nt nt 9.4 <1.0 <1.0 1.8 nt 51.4 nt nt 25.5 nttrans-1,2-dichloroethene <1.0 2.0 <1.0 <1.0 <2.0 <1.0 <1.0 <1.0 nt nt <1.1 <1.1 <1.1 <1.1 nt <1.0 nt nt 3.5 ntethylbenzene <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 nt nt <1.0 <1.0 <1.0 <1.0 nt <1.0 nt nt <1.0 nt4-methyl-2-pentanone (MIBK) <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 nt nt <5.0 <5.0 <5.0 <5.0 nt <5.0 nt nt <5.0 ntnaphthalene <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 nt nt <5.0 <5.0 <5.0 <5.0 nt <10 nt nt <5.0 nttoluene <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 nt nt <1.0 <1.0 <1.0 <1.0 nt <1.0 nt nt <1.0 nt1,1,1-trichloroethane <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 2.2 1.2 nt nt <1.0 <1.0 <1.0 <1.0 nt 1.8 nt nt <1.0 nttrichloroethene <1.0 19.0 2.0 6.5 <1.0 14.6 58.9 39.1 <1.0 <1.0 <1.0 <1.0 <1.0 1.5 1.4 27.3 33.2 14.5 21.1 1.6trichlorofluoromethane <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 nt nt <1.0 <1.0 <1.0 <1.0 nt <1.0 nt nt <1.0 ntvinyl chloride <1.0 <1.0 <1.0 <1.0 <1.0 1.2 1.8 <1.0 nt nt <1.0 <1.0 <1.0 <1.0 nt 2.4 nt nt 1.1 ntxylene (total) <1.0 <1.0 <1.0 <1.0 <1.0 3.4 4.5 2.9 nt nt <1.0 <1.0 <1.0 <1.0 nt <1.0 nt nt <1.0 nt

Total COC 15 30 4 37 0 62 112 77 0 0 9 0 20 3 1 83 33 15 63 2




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12/4/2012 12/26/2012 2/7/2013 3/28/2013 5/8/2013 6/24/2013 8/13/2013 9/26/2013 11/14/2013 12/26/2013 2/13/2014 3/24/2014 5/9/2014 6/17/2014 8/6/2014 9/23/2014 11/4/2014 1/9/2015 2/26/2015 4/2/2015 7/10/2015 10/21/2015 1/12/2016 4/6/2016 7/12/2016 10/13/2016

TCE

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g/l)


5/13/2016 6/14/2016 7/12/2016 8/2/2016 9/14/2016 10/13/2016 11/22/2016 12/29/2016

acetone nt 17.3 nt nt <10 nt nt <50bromodichloromethane nt <1.0 nt nt <1.0 nt nt <1.0bromomethane nt <2.0 nt nt <2.0 nt nt <2.02-butanone (MEK) nt <10 nt nt <10 nt nt <10chloroform nt <1.0 nt nt <1.0 nt nt <1.0chloromethane nt <2.0 nt nt <2.0 nt nt <2.0dichlorodifluoromethane nt <2.0 nt nt <2.0 nt nt <2.01,1-dichloroethane nt <1.0 nt nt <1.0 nt nt <1.01,1-dichloroethene nt <1.0 nt nt <1.0 nt nt <1.0cis-1,2-dichloroethene nt 6.0 nt nt 4.3 nt nt <1.0trans-1,2-dichloroethene nt <1.0 nt nt <1.0 nt nt <1.0ethylbenzene nt <1.0 nt nt <1.0 nt nt <1.04-methyl-2-pentanone (MIBK) nt <5.0 nt nt <5.0 nt nt <5.0naphthalene nt <5.0 nt nt <5.0 nt nt <5.0toluene nt <1.0 nt nt <1.0 nt nt <1.01,1,1-trichloroethane nt <1.0 nt nt <1.0 nt nt <1.0trichloroethene <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 2.4 <1.0trichlorofluoromethane nt <1.0 nt nt <1.0 nt nt <1.0vinyl chloride nt 1.8 nt nt 1.8 nt nt <1.0xylene (total) nt <1.0 nt nt <1.0 nt nt <1.0

Total COC 0 25 0 0 6 0 2 0Notes: 1. Samples tested using EPA Method 8260. 2. Concentrations are in units of micrograms-per-liter (ug/l) or parts-per-billion (ppb). 3. Treatment consists of a diffuser system with forced air from a rotary vane compressor. "Treated" samples were collected with the diffuser system operating. 4. <# - Compound not detected above method detection limit. Summation in spreadsheet yields 0; however, actual concentration may be between zero and the method detection limit. nt - not tested. ns - not sampled. COC - contaminants of concern.


SUMP DMH-LD DMH-LD DMH-LD DMH-LD DMH-LD DMH-LD DMH-LD DMH-LD DMH-LDUntreated Influent to Sump 12/4/2012 12/13/2012 4/19/2013 7/29/2013 9/12/2013 6/12/2014 12/18/2014 6/11/2015 12/8/2015 3/8/2016

acetone 59.3 30.6 <10 <10 <10 <10 <10 <10 <20 <20bromodichloromethane <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0bromomethane <2.0 <2.0 7.2 <2.0 <2.0 <2.0 <2.0 <2.0 <4.0 <4.02-butanone (MEK) <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 14.6 <5.0 <20 <20chloroform <1.0 4.6 1.2 <1.0 <1.0 <1.0 <1.0 <1.0 <2.0 <2.0chloromethane <2.0 <2.0 <2.0 <2.0 <2.0 8.6 <2.0 <2.0 <4.0 <4.0dichlorodifluoromethane <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <4.0 <4.01,1-dichloroethane <1.0 <1.0 1.9 13.7 34.5 3.4 <1.0 7.8 11.4 5.91,1-dichloroethene <1.0 2.3 6.2 2.1 <1.0 <1.0 <1.0 6.7 10.8 6.2cis-1,2-dichloroethene 163 194 358 22.1 16.5 45.8 <1.0 438 534 598trans-1,2-dichloroethene <1.0 1.7 1.7 2.2 3.4 <1.0 <1.0 2.8 2.2 <2.0ethylbenzene <1.0 <1.0 <1.0 <1.0 <1.0 1.3 <1.0 <1.0 <2.0 2.8naphthalene <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <10 <10toluene <1.0 <1.0 <1.0 <1.0 <1.0 1.7 <1.0 <1.0 2.2 <2.01,1,1-trichloroethane 3.1 3.6 11.7 12.9 15.3 6.0 <1.0 24.2 36.7 23.3trichloroethene 76.9 36.6 4.9 <1.0 <1.0 1.1 <1.0 2.4 552 53.4trichlorofluoromethane <1.0 <1.0 1.6 1.4 <1.0 <1.0 <1.0 <1.0 3.9 2.81,2,4-trimethylbenzene <5.0 <5.0 <5.0 <5.0 <5.0 7.3 <5.0 <5.0 <10 17.2vinyl chloride 6.7 6.9 9.3 187 162 81.4 <1.0 117 72 97.6xylene (total) <1.0 <1.0 <1.0 <1.0 <1.0 11.8 <1.0 4.7 11 10.0

Total COC 309 280 404 242 233 168 16 604 1,236 817

Treated Effluent from Sump 12/4/2012 12/14/2012 4/19/2013 7/29/2013 9/12/2013 6/9/2014 12/18/2014 6/2/2015 12/8/2015 3/8/2016

acetone 61.3 43.0 <10 <10 <10 <10 <10 <10 11.4bromodichloromethane <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0bromomethane <2.0 <2.0 7.1 <2.0 <2.0 <2.0 <2.0 <2.0 <2.02-butanone (MEK) <5.0 10.8 <5.0 <5.0 <5.0 <5.0 8.3 <10 <10chloroform <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0chloromethane <2.0 <2.0 <2.0 <2.0 <2.0 4.2 <2.0 <2.0 <2.0dichlorodifluoromethane <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.0 <2.01,1-dichloroethane <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.01,1-dichloroethene <1.0 <1.0 1.2 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0cis-1,2-dichloroethene 27.1 30.1 72.4 <1.0 <1.0 1.1 3.4 51.4 25.5trans-1,2-dichloroethene <1.0 <1.0 5.8 <1.0 <1.0 <1.0 <1.0 <1.0 3.5ethylbenzene <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0naphthalene <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <10 <5.0toluene <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <5.01,1,1-trichloroethane <1.0 <1.0 4.7 <1.0 <1.0 <1.0 <1.0 1.8 <1.0trichloroethene 5.7 1.7 25.7 2.7 <1.0 1.3 <1.0 <1.0 27.3 <1.0trichlorofluoromethane <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 21.11,2,4-trimethylbenzene <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <5.0 <1.0vinyl chloride <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 2.4 1.1xylene (total) <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0

Total COC 94 86 117 3 0 7 12 81 62Percentage Reduction Total COCs 70% 69% 71% 99% 100% 96% 25% 93% 92%Percentage Reduction TCE 93% 95% 0% 0% 0% 0% 0% 100% 95% 100%

DMH-LD DMH-LD DMH-LDUntreated Influent to Sump 6/14/2016 9/14/2016 12/29/2016

acetone <50 <50 <50bromodichloromethane <5.0 <5.0 <1.0bromomethane <10 <10 <2.02-butanone (MEK) <50 <50 <10chloroform <5.0 <5.0 <1.0chloromethane <10 <10 <2.0dichlorodifluoromethane <10 <10 <2.01,1-dichloroethane 9 15 6.41,1-dichloroethene <5.0 2.4 8.8cis-1,2-dichloroethene 320 186 241trans-1,2-dichloroethene <5.0 2.6 <1.0ethylbenzene <5.0 <5.0 <1.0naphthalene <25 <25 <5.0toluene <5.0 <5.0 <5.01,1,1-trichloroethane 23.0 15.1 32.9trichloroethene 5.0 5.0 616trichlorofluoromethane <5.0 <5.0 3.61,2,4-trimethylbenzene <525 <525 4.8vinyl chloride 466 245 50xylene (total) <5.0 <5.0 4.3

Total COC 823 471 968

Treated Effluent from Sump 6/14/2016 9/14/2016 12/29/2016

acetone 17.3 <50 <50bromodichloromethane <1.0 <1.0 <1.0bromomethane <2.0 <2.0 <2.02-butanone (MEK) <10 <10 <10chloroform <1.0 <1.0 <1.0chloromethane <2.0 <2.0 <2.0dichlorodifluoromethane <2.0 <2.0 <2.01,1-dichloroethane <1.0 <1.0 <1.01,1-dichloroethene <1.0 <1.0 <1.0cis-1,2-dichloroethene 6.0 4.3 <1.0trans-1,2-dichloroethene <1.0 <1.0 <1.0ethylbenzene <1.0 <1.0 <1.0naphthalene <5.0 <5.0 <5.0toluene <5.0 <5.0 <5.01,1,1-trichloroethane <1.0 <1.0 <1.0trichloroethene <1.0 <1.0 <1.0trichlorofluoromethane <1.0 <1.0 <1.01,2,4-trimethylbenzene <1.0 <1.0 <1.0vinyl chloride 1.8 1.8 <1.0xylene (total) <1.0 <1.0 <1.0

Total COC 25 6 0Percentage Reduction Total COCs 97% 99% 100%Percentage Reduction TCE 100% 100% 100%Notes: 1. Samples tested using EPA Method 8260. 2. Concentrations are in units of micrograms-per-liter (ug/l) or parts-per-billion (ppb). 3. Treatment consists of a diffuser system with forced air from a rotary vane compressor. "Treated Effluent" samples were collected with the diffuser system operating. "Untreated"

samples were collected from the sump influent (prior to startup of the diffuser system) or the loading dock drain manhole (DMH-LD) as indicated. 4. <# - Compound not detected above method detection limit. Summation in spreadsheet yields 0; however, actual concentration may be between zero and the method detection limit. nt - not tested. ns - not sampled. COC - contaminants of concern.

Treated vs. Untreated


Evaluation of Diffuser Treatment System Effectiveness

Total Contaminants of Concern ConcentrationsTreated vs. Untreated

Trichloroethylene Concentrations

May 2014Transformer Area

Excavation Completed↓

0

200

400

600

800

1,000

1,200

1,400

12/4/2012 4/4/2013 8/4/2013 12/4/2013 4/4/2014 8/4/2014 12/4/2014 4/4/2015 8/4/2015 12/4/2015 4/4/2016 8/4/2016 12/4/2016

Con

cent

ratio

n(u

g/l)

DateCOC Untreated COC in Treated Effluent

0

100

200

300

400

500

600

700

12/4/2012 4/4/2013 8/4/2013 12/4/2013 4/4/2014 8/4/2014 12/4/2014 4/4/2015 8/4/2015 12/4/2015 4/4/2016 8/4/2016 12/4/2016

Con

cent

ratio

n(u

g/l)

Date

TCE in Untreated Influent TCE in Treated Effluent TCE Discharge Limit


APPENDIX F

01/03/17


DuBois & King, Inc.


223088P

SGS Accutest Job Number: JC34008


Report to:

DuBois & King, Inc.28 North Main StreetRandolph, VT [email protected]



Certifications: NJ(12129), NY(10983), CA, CT, FL, IL, IN, KS, KY, LA, MA, MD, ME, MN, NC,

OH VAP (CL0056), AK (UST-103), AZ (AZ0786), PA, RI, SC, TX, UT, VA, WV, DoD ELAP (L-A-B L2248)



New Jersey • 2235 Route 130 • Dayton, NJ 08810 • tel: 732-329-0200 • fax: 732-329-3499 • http://www.accutest.com




Client Service contact: Daniel Axelrod 732-329-0200

Nancy ColeLaboratory Director

New Jersey 01/03/17


16


1 of 16

JC34008


Sections:


3.1: JC34008-1: BLOWER EFFLUENT ............................................................................. 73.2: JC34008-2: OFFICE SPACE ........................................................................................ 93.3: JC34008-3: PRODUCTION AREA ............................................................................. 11

Section 4: Misc. Forms ............................................................................................................ 134.1: Chain of Custody ........................................................................................................... 144.2: Summa Canister and Flow Controller Log .................................................................... 16

12

34

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SGS Accutest

Sample Summary

DuBois & King, Inc.Job No: JC34008



JC34008-1 12/18/16 00:26 CJ 12/20/16 AIR Soil Vapor Grab BLOWER EFFLUENT

JC34008-2 12/18/16 08:00 AS 12/20/16 AIR Indoor Air Comp. OFFICE SPACE

JC34008-3 12/18/16 08:24 AS 12/20/16 AIR Indoor Air Comp. PRODUCTION AREA

3 of 16

JC34008

1

Summary of Hits Page 1 of 2 Job Number: JC34008Account: DuBois & King, Inc.Project: Connor Homes, 1741 Route 7 South, Middlebury, VTCollected: 12/18/16


JC34008-1 BLOWER EFFLUENT

Acetone 58.3 0.80 0.14 ppbv TO-151,1-Dichloroethane 2.0 0.80 0.061 ppbv TO-151,1-Dichloroethylene 3.6 0.80 0.084 ppbv TO-15Dichlorodifluoromethane 0.70 J 0.80 0.076 ppbv TO-15trans-1,2-Dichloroethylene 0.55 J 0.80 0.11 ppbv TO-15cis-1,2-Dichloroethylene 69.9 0.80 0.084 ppbv TO-15Ethanol 10.2 2.0 0.30 ppbv TO-15Ethylbenzene 1.3 0.80 0.17 ppbv TO-15Hexane 1.0 0.80 0.090 ppbv TO-15Isopropyl Alcohol 2.3 0.80 0.62 ppbv TO-15Methylene chloride 3.3 0.80 0.10 ppbv TO-15Methyl ethyl ketone 2.3 0.80 0.19 ppbv TO-151,1,1-Trichloroethane 7.7 0.80 0.094 ppbv TO-15Tetrachloroethylene 0.71 0.16 0.092 ppbv TO-15Toluene 14.7 0.80 0.050 ppbv TO-15Trichloroethylene 148 0.16 0.074 ppbv TO-15Trichlorofluoromethane 2.9 0.80 0.088 ppbv TO-15Vinyl chloride 30.6 0.80 0.082 ppbv TO-15m,p-Xylene 3.9 0.80 0.27 ppbv TO-15o-Xylene 1.6 0.80 0.20 ppbv TO-15Xylenes (total) 5.4 0.80 0.20 ppbv TO-15Acetone 138 1.9 0.33 ug/m3 TO-151,1-Dichloroethane 8.1 3.2 0.25 ug/m3 TO-151,1-Dichloroethylene 14 3.2 0.33 ug/m3 TO-15Dichlorodifluoromethane 3.5 J 4.0 0.38 ug/m3 TO-15trans-1,2-Dichloroethylene 2.2 J 3.2 0.44 ug/m3 TO-15cis-1,2-Dichloroethylene 277 3.2 0.33 ug/m3 TO-15Ethanol 19.2 3.8 0.57 ug/m3 TO-15Ethylbenzene 5.6 3.5 0.74 ug/m3 TO-15Hexane 3.5 2.8 0.32 ug/m3 TO-15Isopropyl Alcohol 5.7 2.0 1.5 ug/m3 TO-15Methylene chloride 11 2.8 0.35 ug/m3 TO-15Methyl ethyl ketone 6.8 2.4 0.56 ug/m3 TO-151,1,1-Trichloroethane 42 4.4 0.51 ug/m3 TO-15Tetrachloroethylene 4.8 1.1 0.62 ug/m3 TO-15Toluene 55.4 3.0 0.19 ug/m3 TO-15Trichloroethylene 795 0.86 0.40 ug/m3 TO-15Trichlorofluoromethane 16 4.5 0.49 ug/m3 TO-15Vinyl chloride 78.2 2.0 0.21 ug/m3 TO-15m,p-Xylene 17 3.5 1.2 ug/m3 TO-15o-Xylene 6.9 3.5 0.87 ug/m3 TO-15Xylenes (total) 23 3.5 0.87 ug/m3 TO-15

4 of 16

JC34008

2

Summary of Hits Page 2 of 2 Job Number: JC34008Account: DuBois & King, Inc.Project: Connor Homes, 1741 Route 7 South, Middlebury, VTCollected: 12/18/16


JC34008-2 OFFICE SPACE

Chloromethane 0.40 0.20 0.052 ppbv TO-15Dichlorodifluoromethane 0.51 0.20 0.019 ppbv TO-15Methylene chloride 0.22 0.20 0.025 ppbv TO-15Tetrachloroethylene 0.26 0.040 0.023 ppbv TO-15Trichloroethylene 0.051 0.040 0.019 ppbv TO-15Trichlorofluoromethane 2.6 0.20 0.022 ppbv TO-15Chloromethane 0.83 0.41 0.11 ug/m3 TO-15Dichlorodifluoromethane 2.5 0.99 0.094 ug/m3 TO-15Methylene chloride 0.76 0.69 0.087 ug/m3 TO-15Tetrachloroethylene 1.8 0.27 0.16 ug/m3 TO-15Trichloroethylene 0.27 0.21 0.10 ug/m3 TO-15Trichlorofluoromethane 15 1.1 0.12 ug/m3 TO-15

JC34008-3 PRODUCTION AREA

Chloromethane 0.49 0.20 0.052 ppbv TO-15Dichlorodifluoromethane 0.59 0.20 0.019 ppbv TO-15Methylene chloride 0.44 0.20 0.025 ppbv TO-15Tetrachloroethylene 0.63 0.040 0.023 ppbv TO-15Trichloroethylene 0.043 0.040 0.019 ppbv TO-15Trichlorofluoromethane 2.5 0.20 0.022 ppbv TO-15Chloromethane 1.0 0.41 0.11 ug/m3 TO-15Dichlorodifluoromethane 2.9 0.99 0.094 ug/m3 TO-15Methylene chloride 1.5 0.69 0.087 ug/m3 TO-15Tetrachloroethylene 4.3 0.27 0.16 ug/m3 TO-15Trichloroethylene 0.23 0.21 0.10 ug/m3 TO-15Trichlorofluoromethane 14 1.1 0.12 ug/m3 TO-15

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JC34008

2

SGS Accutest

Sample Results

Report of Analysis

New JerseySection 3

6 of 16

JC34008

3

SGS Accutest


Client Sample ID: BLOWER EFFLUENT Lab Sample ID: JC34008-1 Date Sampled: 12/18/16 Matrix: AIR - Soil Vapor Grab Summa ID: A237 Date Received: 12/20/16 Method: TO-15 Percent Solids: n/a Project: Connor Homes, 1741 Route 7 South, Middlebury, VT

File ID DF Analyzed By Prep Date Prep Batch Analytical BatchRun #1 5W21959.D 1 12/30/16 DFT n/a n/a V5W873Run #2

Initial VolumeRun #1 100 mlRun #2

CAS No. MW Compound Result RL MDL Units Q Result RL MDL Units

67-64-1 58.08 Acetone 58.3 0.80 0.14 ppbv 138 1.9 0.33 ug/m3106-99-0 54.09 1,3-Butadiene ND 0.80 0.11 ppbv ND 1.8 0.24 ug/m371-43-2 78.11 Benzene ND 0.80 0.13 ppbv ND 2.6 0.42 ug/m375-27-4 163.8 Bromodichloromethane ND 0.80 0.15 ppbv ND 5.4 1.0 ug/m375-25-2 252.8 Bromoform ND 0.80 0.063 ppbv ND 8.3 0.65 ug/m374-83-9 94.94 Bromomethane ND 0.80 0.074 ppbv ND 3.1 0.29 ug/m3593-60-2 106.9 Bromoethene ND 0.80 0.074 ppbv ND 3.5 0.32 ug/m3100-44-7 126 Benzyl Chloride ND 0.80 0.11 ppbv ND 4.1 0.57 ug/m375-15-0 76.14 Carbon disulfide ND 0.80 0.13 ppbv ND 2.5 0.40 ug/m3108-90-7 112.6 Chlorobenzene ND 0.80 0.22 ppbv ND 3.7 1.0 ug/m375-00-3 64.52 Chloroethane ND 0.80 0.14 ppbv ND 2.1 0.37 ug/m367-66-3 119.4 Chloroform ND 0.80 0.066 ppbv ND 3.9 0.32 ug/m374-87-3 50.49 Chloromethane ND 0.80 0.21 ppbv ND 1.7 0.43 ug/m3107-05-1 76.53 3-Chloropropene ND 0.80 0.11 ppbv ND 2.5 0.34 ug/m395-49-8 126.6 2-Chlorotoluene ND 0.80 0.068 ppbv ND 4.1 0.35 ug/m356-23-5 153.8 Carbon tetrachloride ND 0.80 0.12 ppbv ND 5.0 0.75 ug/m3110-82-7 84.16 Cyclohexane ND 0.80 0.065 ppbv ND 2.8 0.22 ug/m375-34-3 98.96 1,1-Dichloroethane 2.0 0.80 0.061 ppbv 8.1 3.2 0.25 ug/m375-35-4 96.94 1,1-Dichloroethylene 3.6 0.80 0.084 ppbv 14 3.2 0.33 ug/m3106-93-4 187.9 1,2-Dibromoethane ND 0.80 0.17 ppbv ND 6.1 1.3 ug/m3107-06-2 98.96 1,2-Dichloroethane ND 0.80 0.070 ppbv ND 3.2 0.28 ug/m378-87-5 113 1,2-Dichloropropane ND 0.80 0.088 ppbv ND 3.7 0.41 ug/m3123-91-1 88.12 1,4-Dioxane ND 0.80 0.18 ppbv ND 2.9 0.65 ug/m375-71-8 120.9 Dichlorodifluoromethane 0.70 0.80 0.076 ppbv J 3.5 4.0 0.38 ug/m3124-48-1 208.3 Dibromochloromethane ND 0.80 0.21 ppbv ND 6.8 1.8 ug/m3156-60-5 96.94 trans-1,2-Dichloroethylene 0.55 0.80 0.11 ppbv J 2.2 3.2 0.44 ug/m3156-59-2 96.94 cis-1,2-Dichloroethylene 69.9 0.80 0.084 ppbv 277 3.2 0.33 ug/m310061-01-5 111 cis-1,3-Dichloropropene ND 0.80 0.061 ppbv ND 3.6 0.28 ug/m3541-73-1 147 m-Dichlorobenzene ND 0.80 0.078 ppbv ND 4.8 0.47 ug/m395-50-1 147 o-Dichlorobenzene ND 0.80 0.064 ppbv ND 4.8 0.38 ug/m3106-46-7 147 p-Dichlorobenzene ND 0.80 0.11 ppbv ND 4.8 0.66 ug/m310061-02-6 111 trans-1,3-Dichloropropene ND 0.80 0.073 ppbv ND 3.6 0.33 ug/m3

ND = Not detected MDL = Method Detection Limit J = Indicates an estimated valueRL = Reporting Limit B = Indicates analyte found in associated method blankE = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound

7 of 16

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33.1

SGS Accutest


Client Sample ID: BLOWER EFFLUENT Lab Sample ID: JC34008-1 Date Sampled: 12/18/16 Matrix: AIR - Soil Vapor Grab Summa ID: A237 Date Received: 12/20/16 Method: TO-15 Percent Solids: n/a Project: Connor Homes, 1741 Route 7 South, Middlebury, VT


64-17-5 46.07 Ethanol 10.2 2.0 0.30 ppbv 19.2 3.8 0.57 ug/m3100-41-4 106.2 Ethylbenzene 1.3 0.80 0.17 ppbv 5.6 3.5 0.74 ug/m3141-78-6 88 Ethyl Acetate ND 0.80 0.30 ppbv ND 2.9 1.1 ug/m3622-96-8 120.2 4-Ethyltoluene ND 0.80 0.067 ppbv ND 3.9 0.33 ug/m376-13-1 187.4 Freon 113 ND 0.80 0.086 ppbv ND 6.1 0.66 ug/m376-14-2 170.9 Freon 114 ND 0.80 0.13 ppbv ND 5.6 0.91 ug/m3142-82-5 100.2 Heptane ND 0.80 0.081 ppbv ND 3.3 0.33 ug/m387-68-3 260.8 Hexachlorobutadiene ND 0.80 0.081 ppbv ND 8.5 0.86 ug/m3110-54-3 86.17 Hexane 1.0 0.80 0.090 ppbv 3.5 2.8 0.32 ug/m3591-78-6 100 2-Hexanone ND 0.80 0.18 ppbv ND 3.3 0.74 ug/m367-63-0 60.1 Isopropyl Alcohol 2.3 0.80 0.62 ppbv 5.7 2.0 1.5 ug/m375-09-2 84.94 Methylene chloride 3.3 0.80 0.10 ppbv 11 2.8 0.35 ug/m378-93-3 72.11 Methyl ethyl ketone 2.3 0.80 0.19 ppbv 6.8 2.4 0.56 ug/m3108-10-1 100.2 Methyl Isobutyl Ketone ND 0.80 0.22 ppbv ND 3.3 0.90 ug/m31634-04-4 88.15 Methyl Tert Butyl Ether ND 0.80 0.079 ppbv ND 2.9 0.28 ug/m391-20-3 128.17 Naphthalene ND 0.80 0.23 ppbv ND 4.2 1.2 ug/m3115-07-1 42 Propylene ND 2.0 0.13 ppbv ND 3.4 0.22 ug/m3100-42-5 104.1 Styrene ND 0.80 0.062 ppbv ND 3.4 0.26 ug/m371-55-6 133.4 1,1,1-Trichloroethane 7.7 0.80 0.094 ppbv 42 4.4 0.51 ug/m379-34-5 167.9 1,1,2,2-Tetrachloroethane ND 0.80 0.064 ppbv ND 5.5 0.44 ug/m379-00-5 133.4 1,1,2-Trichloroethane ND 0.80 0.16 ppbv ND 4.4 0.87 ug/m3120-82-1 181.5 1,2,4-Trichlorobenzene ND 0.80 0.22 ppbv ND 5.9 1.6 ug/m395-63-6 120.2 1,2,4-Trimethylbenzene ND 0.80 0.061 ppbv ND 3.9 0.30 ug/m3108-67-8 120.2 1,3,5-Trimethylbenzene ND 0.80 0.18 ppbv ND 3.9 0.88 ug/m3540-84-1 114.2 2,2,4-Trimethylpentane ND 0.80 0.091 ppbv ND 3.7 0.43 ug/m375-65-0 74.12 Tertiary Butyl Alcohol ND 0.80 0.21 ppbv ND 2.4 0.64 ug/m3127-18-4 165.8 Tetrachloroethylene 0.71 0.16 0.092 ppbv 4.8 1.1 0.62 ug/m3109-99-9 72.11 Tetrahydrofuran ND 0.80 0.18 ppbv ND 2.4 0.53 ug/m3108-88-3 92.14 Toluene 14.7 0.80 0.050 ppbv 55.4 3.0 0.19 ug/m379-01-6 131.4 Trichloroethylene 148 0.16 0.074 ppbv 795 0.86 0.40 ug/m375-69-4 137.4 Trichlorofluoromethane 2.9 0.80 0.088 ppbv 16 4.5 0.49 ug/m375-01-4 62.5 Vinyl chloride 30.6 0.80 0.082 ppbv 78.2 2.0 0.21 ug/m3108-05-4 86 Vinyl Acetate ND 0.80 0.22 ppbv ND 2.8 0.77 ug/m3

106.2 m,p-Xylene 3.9 0.80 0.27 ppbv 17 3.5 1.2 ug/m395-47-6 106.2 o-Xylene 1.6 0.80 0.20 ppbv 6.9 3.5 0.87 ug/m31330-20-7 106.2 Xylenes (total) 5.4 0.80 0.20 ppbv 23 3.5 0.87 ug/m3


460-00-4 4-Bromofluorobenzene 101% 65-128%


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SGS Accutest


Client Sample ID: OFFICE SPACE Lab Sample ID: JC34008-2 Date Sampled: 12/18/16 Matrix: AIR - Indoor Air Comp. Summa ID: A452 Date Received: 12/20/16 Method: TO-15 Percent Solids: n/a Project: Connor Homes, 1741 Route 7 South, Middlebury, VT

File ID DF Analyzed By Prep Date Prep Batch Analytical BatchRun #1 5W21960.D 1 12/30/16 DFT n/a n/a V5W873Run #2


VOA Halogenated List


75-27-4 163.8 Bromodichloromethane ND 0.20 0.039 ppbv ND 1.3 0.26 ug/m375-25-2 252.8 Bromoform ND 0.20 0.016 ppbv ND 2.1 0.17 ug/m374-83-9 94.94 Bromomethane ND 0.20 0.018 ppbv ND 0.78 0.070 ug/m3108-90-7 112.6 Chlorobenzene ND 0.20 0.056 ppbv ND 0.92 0.26 ug/m375-00-3 64.52 Chloroethane ND 0.20 0.036 ppbv ND 0.53 0.095 ug/m367-66-3 119.4 Chloroform ND 0.20 0.017 ppbv ND 0.98 0.083 ug/m374-87-3 50.49 Chloromethane 0.40 0.20 0.052 ppbv 0.83 0.41 0.11 ug/m356-23-5 153.8 Carbon tetrachloride ND 0.20 0.031 ppbv ND 1.3 0.20 ug/m375-34-3 98.96 1,1-Dichloroethane ND 0.20 0.015 ppbv ND 0.81 0.061 ug/m375-35-4 96.94 1,1-Dichloroethylene ND 0.20 0.021 ppbv ND 0.79 0.083 ug/m3107-06-2 98.96 1,2-Dichloroethane ND 0.20 0.018 ppbv ND 0.81 0.073 ug/m378-87-5 113 1,2-Dichloropropane ND 0.20 0.022 ppbv ND 0.92 0.10 ug/m375-71-8 120.9 Dichlorodifluoromethane 0.51 0.20 0.019 ppbv 2.5 0.99 0.094 ug/m3124-48-1 208.3 Dibromochloromethane ND 0.20 0.053 ppbv ND 1.7 0.45 ug/m3156-60-5 96.94 trans-1,2-Dichloroethylene ND 0.20 0.028 ppbv ND 0.79 0.11 ug/m3156-59-2 96.94 cis-1,2-Dichloroethylene ND 0.20 0.021 ppbv ND 0.79 0.083 ug/m310061-01-5 111 cis-1,3-Dichloropropene ND 0.20 0.015 ppbv ND 0.91 0.068 ug/m3541-73-1 147 m-Dichlorobenzene ND 0.20 0.020 ppbv ND 1.2 0.12 ug/m395-50-1 147 o-Dichlorobenzene ND 0.20 0.016 ppbv ND 1.2 0.096 ug/m3106-46-7 147 p-Dichlorobenzene ND 0.20 0.027 ppbv ND 1.2 0.16 ug/m310061-02-6 111 trans-1,3-Dichloropropene ND 0.20 0.018 ppbv ND 0.91 0.082 ug/m375-09-2 84.94 Methylene chloride 0.22 0.20 0.025 ppbv 0.76 0.69 0.087 ug/m371-55-6 133.4 1,1,1-Trichloroethane ND 0.20 0.024 ppbv ND 1.1 0.13 ug/m379-34-5 167.9 1,1,2,2-Tetrachloroethane ND 0.20 0.016 ppbv ND 1.4 0.11 ug/m379-00-5 133.4 1,1,2-Trichloroethane ND 0.20 0.039 ppbv ND 1.1 0.21 ug/m3127-18-4 165.8 Tetrachloroethylene 0.26 0.040 0.023 ppbv 1.8 0.27 0.16 ug/m379-01-6 131.4 Trichloroethylene 0.051 0.040 0.019 ppbv 0.27 0.21 0.10 ug/m375-69-4 137.4 Trichlorofluoromethane 2.6 0.20 0.022 ppbv 15 1.1 0.12 ug/m375-01-4 62.5 Vinyl chloride ND 0.20 0.021 ppbv ND 0.51 0.054 ug/m3


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33.2

SGS Accutest


Client Sample ID: OFFICE SPACE Lab Sample ID: JC34008-2 Date Sampled: 12/18/16 Matrix: AIR - Indoor Air Comp. Summa ID: A452 Date Received: 12/20/16 Method: TO-15 Percent Solids: n/a Project: Connor Homes, 1741 Route 7 South, Middlebury, VT





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SGS Accutest


Client Sample ID: PRODUCTION AREA Lab Sample ID: JC34008-3 Date Sampled: 12/18/16 Matrix: AIR - Indoor Air Comp. Summa ID: A1084 Date Received: 12/20/16 Method: TO-15 Percent Solids: n/a Project: Connor Homes, 1741 Route 7 South, Middlebury, VT

File ID DF Analyzed By Prep Date Prep Batch Analytical BatchRun #1 5W21961.D 1.48 12/30/16 DFT n/a n/a V5W873Run #2




75-27-4 163.8 Bromodichloromethane ND 0.20 0.039 ppbv ND 1.3 0.26 ug/m375-25-2 252.8 Bromoform ND 0.20 0.016 ppbv ND 2.1 0.17 ug/m374-83-9 94.94 Bromomethane ND 0.20 0.018 ppbv ND 0.78 0.070 ug/m3108-90-7 112.6 Chlorobenzene ND 0.20 0.056 ppbv ND 0.92 0.26 ug/m375-00-3 64.52 Chloroethane ND 0.20 0.036 ppbv ND 0.53 0.095 ug/m367-66-3 119.4 Chloroform ND 0.20 0.017 ppbv ND 0.98 0.083 ug/m374-87-3 50.49 Chloromethane 0.49 0.20 0.052 ppbv 1.0 0.41 0.11 ug/m356-23-5 153.8 Carbon tetrachloride ND 0.20 0.031 ppbv ND 1.3 0.20 ug/m375-34-3 98.96 1,1-Dichloroethane ND 0.20 0.015 ppbv ND 0.81 0.061 ug/m375-35-4 96.94 1,1-Dichloroethylene ND 0.20 0.021 ppbv ND 0.79 0.083 ug/m3107-06-2 98.96 1,2-Dichloroethane ND 0.20 0.018 ppbv ND 0.81 0.073 ug/m378-87-5 113 1,2-Dichloropropane ND 0.20 0.022 ppbv ND 0.92 0.10 ug/m375-71-8 120.9 Dichlorodifluoromethane 0.59 0.20 0.019 ppbv 2.9 0.99 0.094 ug/m3124-48-1 208.3 Dibromochloromethane ND 0.20 0.053 ppbv ND 1.7 0.45 ug/m3156-60-5 96.94 trans-1,2-Dichloroethylene ND 0.20 0.028 ppbv ND 0.79 0.11 ug/m3156-59-2 96.94 cis-1,2-Dichloroethylene ND 0.20 0.021 ppbv ND 0.79 0.083 ug/m310061-01-5 111 cis-1,3-Dichloropropene ND 0.20 0.015 ppbv ND 0.91 0.068 ug/m3541-73-1 147 m-Dichlorobenzene ND 0.20 0.020 ppbv ND 1.2 0.12 ug/m395-50-1 147 o-Dichlorobenzene ND 0.20 0.016 ppbv ND 1.2 0.096 ug/m3106-46-7 147 p-Dichlorobenzene ND 0.20 0.027 ppbv ND 1.2 0.16 ug/m310061-02-6 111 trans-1,3-Dichloropropene ND 0.20 0.018 ppbv ND 0.91 0.082 ug/m375-09-2 84.94 Methylene chloride 0.44 0.20 0.025 ppbv 1.5 0.69 0.087 ug/m371-55-6 133.4 1,1,1-Trichloroethane ND 0.20 0.024 ppbv ND 1.1 0.13 ug/m379-34-5 167.9 1,1,2,2-Tetrachloroethane ND 0.20 0.016 ppbv ND 1.4 0.11 ug/m379-00-5 133.4 1,1,2-Trichloroethane ND 0.20 0.039 ppbv ND 1.1 0.21 ug/m3127-18-4 165.8 Tetrachloroethylene 0.63 0.040 0.023 ppbv 4.3 0.27 0.16 ug/m379-01-6 131.4 Trichloroethylene 0.043 0.040 0.019 ppbv 0.23 0.21 0.10 ug/m375-69-4 137.4 Trichlorofluoromethane 2.5 0.20 0.022 ppbv 14 1.1 0.12 ug/m375-01-4 62.5 Vinyl chloride ND 0.20 0.021 ppbv ND 0.51 0.054 ug/m3


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JC34008

33.3

SGS Accutest


Client Sample ID: PRODUCTION AREA Lab Sample ID: JC34008-3 Date Sampled: 12/18/16 Matrix: AIR - Indoor Air Comp. Summa ID: A1084 Date Received: 12/20/16 Method: TO-15 Percent Solids: n/a Project: Connor Homes, 1741 Route 7 South, Middlebury, VT





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SGS Accutest

Misc. Forms



• Chain of Custody• Summa Canister and Flow Controller Log

New JerseySection 4

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4

JC34008: Chain of CustodyPage 1 of 2

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JC34008

44.1


Job Number: JC34008 Client:


Project:

4. No. Coolers: N/A

Airbill #'s:

Cooler Security


Y or N


3. COC Present:





3. Cooler media:

N/A

N/A




















Intact

Y or N

Comments

Y or N N/A

Cooler Temps (Raw Measured) °C:

Cooler Temps (Corrected) °C:

SM089-02Rev. Date 12/1/16

JC34008: Chain of CustodyPage 2 of 2

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JC34008

44.1

Summa Canister and Flow Controller Log Page 1 of 1 Job Number: JC34008Account: DBKVTR DuBois & King, Inc.Project: Connor Homes, 1741 Route 7 South, Middlebury, VTReceived: 12/20/16

SUMMA CANISTERSShipping ReceivingSumma Vac Date SCC SCC Sample Date Vac Pres Final DilID L " Hg Out By Batch FileID Number In By " Hg psig psig Fact

A237 6 29.4 12/06/16 PC CP8860 W57506.D JC34008-1 12/20/16 RD 6 1A452 6 29.4 12/06/16 PC CP8860 W57506.D JC34008-2 12/20/16 RD .5 1A1084 6 29.4 12/06/16 PC CP8860 W57506.D JC34008-3 12/20/16 RD 8 1.2 1.48

FLOW CONTROLLERS / OTHERShipping ReceivingFlow Date cc/ Time Date cc/ FlowCrtl ID Out By min hrs. In By min RPD Equipment Type

FC122 12/06/16 PC 9.4 8 12/21/16 PC 10 6.2 Flow ControllerFC330 12/06/16 PC 9.4 8 12/21/16 PC 10.5 11.1 Flow Controller

SGS Accutest Bottle Order(s):SD-12_1_2016-116

Prep Date Room Temp(F) Bar Pres "Hg12/06/16 70 29.92

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JC34008

44.2

Phase Type (check one) - · PDF file1.0 INTRODUCTION ... groundwater from dewatering was...

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Transcript of Phase Type (check one) - · PDF file1.0 INTRODUCTION ... groundwater from dewatering was...