U Save Beverage 1302 Williston Road South Burlington, Vermont · 1302 Williston Road South Burlington, Vermont VTDEC Site #90-0496 KAS Job #406060248 JUNE 2016 GROUNDWATER MONITORING

U Save Beverage 1302 Williston Road South Burlington, Vermont

VTDEC Site #90-0496 KAS Job #406060248

JUNE 2016 GROUNDWATER MONITORING REPORT Report Date: August 12, 2016 Prepared for: Champlain Oil Company P.O Box 2126 South Burlington, VT 05403

June 2016 Groundwater Monitoring Report U Save Beverage, South Burlington, Vermont

i KAS #406060248

Table of Contents

1.0 Introduction and Background ................................................................................................ 1

2.0 Groundwater Monitoring ....................................................................................................... 1

2.1 Determination of Groundwater Flow Direction and Gradient .......................................................... 1

2.2 Groundwater Sample Collection and Analysis .................................................................................. 2

3.0 Sensitive Receptor Risk Assessment ...................................................................................... 3

4.0 Conclusions ............................................................................................................................ 3

5.0 Recommendations .................................................................................................................. 4

Appendices

Appendix A 1) Site Location Map 2) Site Map 3) Groundwater Contour Map 4) Contaminant Concentration Map

Appendix B Liquid Level Monitoring Data

Appendix C Groundwater Quality Summary

Appendix D Analytical Laboratory Report


1 KAS #406060248

1.0 Introduction and Background

This report summarizes the June 2016 groundwater monitoring event conducted at the U Save Beverage at 1302 Williston Road in South Burlington, Vermont (“Site”). A Site Location Map is included in Appendix A. KAS, Inc. (KAS) conducted this work for Champlain Oil Company (COCO), the owner of the Site.

Petroleum contamination was first discovered at the Site in May 1990 during the removal and replacement of six gasoline underground storage tanks (USTs). Approximately 120 yards of contaminated soil was transported off-site for disposal. Following the discovery of contamination a total of four monitoring wells were installed and sampled. These wells were sampled three times between 1990 and 1991. An additional round of groundwater monitoring occurred in 2006, 2007, and 2008. In September 2007, the six USTs were removed and replaced at the Site. During these activities, monitoring well MW-1 was destroyed.

Three soil borings were advanced on October 27, 2010. One boring was advanced in the immediate vicinity of the source area and where MW-1 was previously located. Two other borings were advanced in a cross or downgradient location to the source area. Soil screening during the installation of these borings indicated the presence of volatile organic compounds (VOCs) up to 353.3 parts per million (ppm) in the MW-1 replacement boring. Groundwater analytical results from November 1, 2010 indicated that VOCs above Vermont Groundwater Enforcement Standards (VGES) are present in groundwater in the vicinity of MW10-1R, which is the replacement well installed for MW-1.

Copies of previous reports are on file at the VTDEC office in Montpelier, VT.

The current scope of work at this Site includes groundwater monitoring of the two site-related monitoring wells (MW10-1R and MW10-5). Natural attenuation groundwater monitoring efforts have been conducted at the Site on a biennial basis since May 2012.

2.0 Groundwater Monitoring

2.1 Determination of Groundwater Flow Direction and Gradient

Water table elevation measurements were collected from six site-related monitoring wells on June 2, 2016. The top of casing elevations were determined relative to the top of monitoring well MW-4, which was arbitrarily set at 99.94 feet. The depth to water in each well was subtracted from the top of casing elevation to obtain the relative water table elevation. The depth to groundwater measured on June 2, 2016 ranged from 5.10 to 6.19 feet below the top of casing (btoc). These measurements are within the historic range, but were approximately a foot below the previous sampling event in May 2014.

The relative water table elevations measured on June 2, 2016 suggest that groundwater generally flows across the Site from south to north and from east to west at a shallow hydraulic gradient of approximately 2.5% which, is generally consistent with previous estimates for the Site. During the previous sampling event in May 2014 sampling event, groundwater was observed to flow to the south. The difference is groundwater flow direction between the two sampling events could be due to only three of the six on-site monitoring wells being gauged during the May 2014 sampling event. The difference could also to be due to changes at the Site over time. In order to try and determine more accurately which way groundwater is flowing at the Site, all of the on-site wells should be resurveyed. Free phase product was not measured or observed in the wells on June 2, 2016. Water table elevations were plotted on


2 KAS #406060248

the Site Map to generate the Groundwater Contour Map (Appendix A). Water level data are presented in Appendix B.

During the June 2016 groundwater monitoring event, all Site monitoring wells were observed to be in need of immediate repairs in order to maintain well integrity. Specific repairs are listed below:

MW10-1R, MW-2, and MW10-5: Both bolts are sheared off in bolt holes and, need a complete road box replacement;

MW-3: Monitoring well is not secure in the ground and it needs a complete road box replacement; and,

MW-4 and MW10-6: Both bolts are missing, need to re-tap bolt holes and replace bolts.

2.2 Groundwater Sample Collection and Analysis

KAS collected groundwater samples from monitoring wells MW10-1R and MW10-5 on June 2, 2016. The water samples were analyzed by Endyne, Inc. of Williston, Vermont, by EPA Method 8021B for benzene, toluene, ethylbenzene, and xylenes (BTEX), methyl tertiary butyl ether (MTBE), naphthalene, 1,3,5-trimethylbenzene (TMB), and 1,2,4-TMB. These results along with the historical groundwater quality data are tabulated and graphed in Appendix C and compared with the applicable Vermont Groundwater Enforcement Standards (VGES). The laboratory report is presented in Appendix D.

Analytical Results

Based on the results of the June 2, 2016 groundwater sampling event, contaminant concentrations in excess of VGES were reported in both of the monitoring wells. In monitoring well MW10-1R benzene (254 parts per billion (ppb)), ethylbenzene (1,860 ppb), MTBE (68.8 ppb), 1,3,5-TMB (1,520 ppb), 1,2,4-TMB (1,520 ppb), and naphthalene (413 ppb) were all above VGES in the groundwater sample from this well. In the groundwater sample from monitoring well MW10-5 benzene (28.1 ppb) was the only compound reported to be over VGES.

Trend Analysis

Slight increases in total VOC concentrations were noted at both MW10-1R and MW10-5 since the previous sampling round in May 2014. Total VOC concentrations at MW10-1R were within historical range, but total VOC concentrations at MW10-5 were the highest concentration to date.

Even though the total VOC concentration in monitoring well MW10-1R has increased since the previous sampling round, it has an overall decreasing trend. Total VOC concentrations have decreased by 89% since peak levels were reported in June 1990. No overall trend was observed for total VOC concentrations at monitoring well MW10-5. Total VOC concentrations at this well have increased by 40% since sampling at this well began in November 2010.

In both monitoring wells MW10-1R and MW10-5, starting in 2010, a general indirect relationship between groundwater elevation and total VOC concentrations has been observed.

Contaminant Distribution

Results from the June 2, 2016 monitoring event were plotted to create the Contaminant Concentration Map in Appendix A. The plume core is located near MW10-1R located in the source area. The plume extends to the south and decreases significantly before reaching MW10-5. The contaminant plume is well defined to the north (up gradient) and to the east and west (cross-gradient). The plume is not fully defined to the south (downgradient) but due to


3 KAS #406060248

the low levels of contamination in monitoring well MW10-5 and being bordered by Williston Road, no additional subsurface is warranted at this time.

QA/QC

The groundwater samples obtained during this study were collected in accordance with KAS’ groundwater sampling protocol. VOCs were not detected in the Trip Blank sample prepared on June 2, 2016. A duplicate sample was obtained at monitoring well MW10-1R. The relative percent difference (RPD) values are low, and indicate that adequate quality and assurance and control were maintained during sampling, transporting, and analysis. The RPD is defined as 100 times the difference between the actual and duplicate sample, divided by the mean of the two samples. A low RPD indicates a good correlation between the two samples, while a high RPD indicates a poor correlation. The absolute RPD values ranged from a low of 6.8% to a high of 15.2%. The overall RPD value was 10.2%. This data is presented in Appendix C.

Unidentified peaks were reported in the groundwater samples obtained from both Site monitoring wells sampled on June 2, 2016.

3.0 Sensitive Receptor Risk Assessment

A sensitive receptor risk assessment of the area surrounding the Site is provided below, and a determination of the potential risk to identified receptors has been made based on proximity to the contaminant plume, groundwater flow direction, contaminant mobility and volatility, and contaminant concentration levels in subsurface soils and groundwater. To date only two sensitive receptors (soil and groundwater beneath the Site) have been identified as being impacted from the subsurface petroleum contamination originating from the Site.

The Site is serviced by the municipal water system. No supply wells have been identified in close proximity to the Site as being at risk to subsurface petroleum contamination. Additionally, no wetlands are located in close proximity to the Site. Potash Brook is located approximately 400-700 feet south/southeast of the source area. Based on the data collected to date at the Site, the Brook is located downgradient of the source area but is not believed to be a potential receptor to the subsurface contamination at this time due to the relatively low source strength and distance to the brook.

One building is present on the subject property. The building lies greater than 30 feet from the source area and does not contain a basement. Given this information the on-site building is not considered to be at significant risk due to vapor intrusion. One off-site commercial building is present approximately 20 feet north of the source area (see Site Map, Attachment A). This building does not appear to contain a basement based on visual observations. Given the previously documented groundwater flow direction, this building lies in an up gradient direction to the source area and is not considered to be at significant risk due to vapor intrusion at this time.

Two utility corridors (City water line and Verizon telephone) run along the northern side of Williston Road (see Site Map, Attachment A). The water line connects to the on and off-site building west of the source area. Based on historical groundwater data collected at the Site it appears the depth to groundwater is at the same approximate depth of a typical buried water line. Therefore, the potential for contaminant migration along the water line corridor is considered possible. However, based on the significant decline in VOC concentrations in MW10-5 as compared to those reported in MW10-1R, the likelihood of contaminant migration along this corridor seems low at this time.


4 KAS #406060248

KAS previously attempted to locate the City sewer line in order to determine its location relative to the reported contamination on-site. The most likely location of the sewer line would be along Williston Road with a probable connection into the western or northern end of the building. Based on the data gathered to date, the potential for contaminant migration along any utility corridors in the vicinity of the Site appears to be low at this time.

Based on the data collected in June 2016 no new sensitive receptors, other than soil and groundwater, have been identified as being at risk to petroleum contamination originating from the Site.

4.0 Conclusions

Based on the results of this groundwater monitoring event at the U Save Beverage in South Burlington, Vermont, KAS presents the following conclusions:

1. Depth to water measurements collected on June 2, 2016 were approximately a foot lower than the previous sampling event in May 2014 but were still within historic range;

2. Groundwater beneath the Site is flowing generally toward the north and west at a shallow hydraulic gradient of 2.5%;

3. Monitoring wells MW10-1R, MW-2, MW-3, MW-4, MW10-5 and MW10-6 were observed to be in need of immediate repairs in order to maintain well integrity;

4. Groundwater samples were collected from two site-related monitoring wells on June 2, 2016. Laboratory analytical results indicate the presence of contaminants above VGES in both site-related wells;

5. Generally long term declining concentrations were noted in monitoring well MW10-1R but no trend was observed at monitoring well MW10-5; and,

6. Other than Site soils and groundwater, there are no known sensitive receptors currently affected by the subsurface petroleum contamination at the U Save Beverage.

5.0 Recommendations

Based on the above conclusions, KAS presents the following recommendation:

1. Due to the continued presence of petroleum contaminants at levels above VGES, KAS recommends that biennial groundwater monitoring continue at the Site with the next monitoring event scheduled for spring 2018. Based on the groundwater elevation data collected during the July 2016 sampling event, groundwater samples should be collected from all on-site monitoring wells to ensure that if groundwater flow at the Site has changed, the dissolved contaminant plume is not migrating. All samples should be analyzed for petroleum hydrocarbons via EPA Method 8021B. Prior to sampling, all Site monitoring wells will be gauged for water level.

2. Well repairs at monitoring wells MW10-1R, MW-2, MW-3, MW-4, MW10-5, and MW10-6 should occur immediately in order to maintain well integrity. All of the on-site wells should be resurveyed when the road box repairs are complete and elevation data should be collected for a data submittal with the updated groundwater flow information.


Appendix A

1) Site Location Map

2) Site Map 3) Groundwater Contour Map

4) Contaminant Concentration Map

VTDEC Site #90-0496 KAS Job Number: 406060248 Source: USGS 7.5 minute quadrangle, Burlington, VT, dated 1948 and photorevised 1987.

Site Location Map

U-Save Beverage 1302 Williston Road, South Burlington, VT

Date: 1/12/16 Drawing: 1/1 Scale: 1”=2,000’ By: MB

SITE LOCATION


Appendix B

Liquid Level Monitoring Data

KAS, Inc. Liquid Level Monitoring Data U-Save Beverage

South Burlington, Vermont

Top Specific Corrected CorrectedWell I.D. of Casing Depth to Depth to Product Gravity Hydro Depth Water Table

Elevation Product Water Thickness of Product Equivalent to Water Elevation

MW10-1R 99.63 - 5.78 - - - - 93.85MW-2 100.00 - 5.87 - - - - 94.13MW-3 100.35 - 6.19 - - - - 94.16MW-4 98.44 - 5.91 - - - - 92.53

MW10-5 98.76 5.10 - 93.66MW10-6 99.37 - 5.49 - - - - 93.88

Well I.D. 6/19/1990 12/12/2006 10/18/2007 10/23/2008 11/1/2010 5/17/2011 5/4/2012 5/23/2014

MW10-1R 94.40 94.81 destroyed destroyed 94.34 94.78 94.12 94.81MW-2 94.51 95.45 93.78 94.08 94.62 96.84 94.47 NMMW-3 94.62 92.25 93.74 94.03 94.67 96.22 94.47 NMMW-4 94.53 94.44 93.52 93.82 94.43 96.03 94.20 NM

MW10-5 - - - - 94.16 95.57 93.94 94.53

MW10-6 - - - - 94.31 95.95 94.11 94.90

Well I.D. 6/2/2016

MW10-1R 93.85MW-2 94.13MW-3 94.16MW-4 92.53

MW10-5 93.66

MW10-6 93.88

NOTES:

All values reported in feet except for Specific Gravity.

Blank values in "Depth to Product" indicated that no product was detected.

Top-of-Casing elevations measured in feet relative to top of casing for monitoring well MW-2 (100.00').

Elevations surveyed by KAS, Inc. on 10/27/10.

NM+ Not Measured, Well Destroyed

Data from 11/1/10 on includes MW10-1R

June 2, 2016

HISTORIC GROUNDWATER ELEVATION

VTDEC Site # 90-0496

KAS, Inc. # 406060248


Appendix C

Groundwater Quality Summary

KAS, Inc. Groundwater Quality Summary U-Save Beverage


MW-16/19/1990 12/19/1990 12/6/1991 12/12/2006 10/18/2007 10/23/2008 VGES

PARAMETER 8021B (ppb)

Benzene 6,210. 4,960. 2,470. 2,180. 5Toluene 23,600. 14,000. 5,760. 177. Well Well 1000Ethylbenzene 3,730. 2,520. 2,140. 1,850. Destroyed Destroyed 700Xylenes 15,200. 8,260. 8,460. 6,820. 10000

Total BTEX 48,740. 29,740. 18,830. 11,027.

MtBE 18,400. 12,600. 9,540. 2,270. 401,3,5-Trimethylbenzene NA NA NA 429.

1,2,4-Trimethylbenzene NA NA NA 1,400.Naphthalene NA NA NA 336. 20

Total BTEX & MTBE 67,140. 42,340. 28,370. 13,297.

Total Targeted VOCs 67,140. 42,340. 28,370. 15,462.

MW10-1R10/27/2010 11/1/2010 5/17/2011 5/4/2012 5/23/2014 6/2/2016 VGES

PARAMETER 8021B 8021B 8021B 8021B 8021B (ppb)

Benzene 1,460. 378. 453. 216. 254. 5Toluene Well 427. 231. 107. 96.7 103. 1000Ethylbenzene Drilled 2,580. 951. 1,660. 1,400. 1,860. 700Xylenes 8,860. 2,580. 4,720. 2,740. 3,160. 10000

Total BTEX 13,327. 4,140. 6,940. 4,453. 5,377.

MtBE ND<100 ND<100 ND<100 ND<100 68.8 401,3,5-Trimethylbenzene 419. 205. 376. ND<50.0 46.4

1,2,4-Trimethylbenzene 1,780. 846. 1,390. 986. 1,520.Naphthalene 543. 184. 331. 280. 413. 20

Total BTEX & MTBE 13,327. 4,140. 6,940. 4,453. 5,446.

Total Targeted VOCs 16,069. 5,375. 9,037. 5,719. 7,425.

All Values Reported in ug/L (ppb)

ND - None detected above sample specific detection limit

NA - Not Analyzed

Bold indicates a detection. Concentrations which are equal to or greater than the current VGES are shaded.

VGES - Vermont Groundwater Enforcement Standard (Groundwater Protection Rule and Strategy, February 14, 2005)

350

350

93.00

93.50

94.00

94.50

95.00

0.

10,000.

20,000.

30,000.

40,000.

50,000.

60,000.

70,000.

80,000.

GW

Ele

vati

on

(ft

)

Co

ncen

trati

on

(p

pb

)

Date

Contaminant Concentrations Vs. TimeMW-1/1R

Total Targeted VOCsGW Elevation


KAS, Inc. # 406060248



MW10-5

11/1/2010 5/17/2011 5/4/2012 5/23/2014 6/2/2016 VGES

PARAMETER 8021B 8021B 8021B 8021B 8021B (ppb)

Benzene ND<1.0 1.5 ND<1.0 4.7 28.1 5Toluene ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 1000Ethylbenzene ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.0 700Xylenes 4.4 ND<2.0 ND<2.0 ND<2.0 ND<2.0 10000

Total BTEX 4.4 1.5 ND 4.7 28.1

MtBE 9.5 2.7 ND<2.0 ND<2.0 ND<2.0 401,3,5-Trimethylbenzene ND<1.0 ND<1.0 ND<1.0 ND<1.0 ND<1.01,2,4-Trimethylbenzene 2.8 ND<1.0 ND<1.0 ND<1.0 ND<1.0Naphthalene ND<2.0 ND<2.0 ND<2.0 ND<2.0 ND<2.0 20

Total Targeted VOCs 16.7 4.2 ND 4.7 28.1

All Values Reported in ug/L (ppb)

ND - None detected above sample specific detection limit

NA - Not Analyzed

Bold indicates a detection. Concentrations which are equal to or greater than the current VGES are shaded.

VGES - Vermont Groundwater Enforcement Standard (Groundwater Protection Rule and Strategy, February 14, 2005)

350

92.50

93.00

93.50

94.00

94.50

95.00

95.50

96.00

0.0

5.0

10.0

15.0

20.0

25.0

30.0

GW

Ele

vati

on

(ft

)

Co

ncen

trati

on

(p

pb

)

Date

Contaminant Concentrations Vs. TimeMW10-5

Total Targeted VOCs GW Elevation

VTDEC Site #90-0496

KAS, Inc. #406060248



PARAMETER Trip Blank MW10-1R

Duplicate

(MW10-1R) RPD VGES

Benzene ND<1.0 254. 272. 6.8% 5Toluene ND<1.0 103. 112. 8.4% 1,000Ethylbenzene ND<1.0 1,860. 2,060. 10.2% 700Xylenes ND<2.0 3,160. 3,450. 8.8% 10,000

Total BTEX ND 5,377. 5,894. 9.2%

MTBE ND<2.0 68.8 80.1 15.2% 401,3,5 Trimethyl Benzene ND<1.0 46.4 52.8 12.9%1,2,4 Trimethyl Benzene ND<1.0 1,520. 1,740. 13.5%Napthalene ND<2.0 413. 456. 9.9% 20

Total Targeted VOCs ND 7,425. 8,223. 10.2%

Analysis by EPA Method 8021B

All values in ug/L (ppb) unless noted NA = Not Applicable

ND<1.0 = None detected over (detection limit) RPD = Relative Percent Difference

VGES = Vermont Groundwater Enforcement Standards (Vermont Groundwater Protection Rule and Strategy, 2/14/05)

>VGES

QA/QC SAMPLES

Sample Date: June 2, 2016

350


KAS, Inc. # 406060248


Appendix D

Analytical Laboratory Report

Laboratory Report

406060248 U- Save BeveragePROJECT:

DATE RECEIVED:

WORK ORDER:

DATE REPORTED:

100306KAS, Inc.

PO Box 787

Williston, VT 05495

Atten: Sam Driver SAMPLER:

June 09, 2016

1606-11274

Sam Driver

June 03, 2016

Reviewed by:

Harry B. Locker, Ph.D.

Laboratory Director

Enclosed please find the results of the analyses performed for the samples referenced on the attached chain of custody. All required method quality control elements including instrument calibration were performed in accordance with method requirements and determined to be acceptable unless otherwise noted.

The column labeled Lab/Tech in the accompanying report denotes the laboratory facility where the testing was performed and the technician who conducted the assay. A "W" designates the Williston, VT lab under NELAC certification ELAP 11263; "R" designates the Lebanon, NH facility under certification NH 2037 and “N” the Plattsburgh, NY lab under certification ELAP 11892. “Sub” indicates the testing was performed by a subcontracted laboratory. The accreditation status of the subcontracted lab is referenced in the corresponding NELAC and Qual fields.

The NELAC column also denotes the accreditation status of each laboratory for each reported parameter. “A” indicates the referenced laboratory is NELAC accredited for the parameter reported. “N” indicates the laboratory is not accredited. “U” indicates that NELAC does not offer accreditation for that parameter in that specific matrix. Test results denoted with an “A” meet all National Environmental Laboratory Accreditation Program requirements except where denoted by pertinent data qualifiers. Test results are representative of the samples as they were received at the laboratory

Endyne, Inc. warrants, to the best of its knowledge and belief, the accuracy of the analytical

test results contained in this report, but makes no other warranty, expressed or implied, especially no warranties of merchantability or fitness for a particular purpose.

160 James Brown Dr., Williston, VT 05495

Ph 802-879-4333 Fax 802-879-7103 ELAP 11263

www.endynelabs.com

NH203756 Etna Road, Lebanon, NH 03766

Ph 603-678-4891 Fax 603-678-4893

Laboratory Report

KAS, Inc.

Page 2 of 2

CLIENT:PROJECT: 406060248 U- Save Beverage

WORK ORDER:DATE RECEIVED:

1606-1127406/03/2016

6/9/2016REPORT DATE:

001 Date Sampled: 6/2/16Site: Trip Blank 6/3/16 MHMWAnalysis Date:08:00

QualNelac

Result

UnitResult

Result

ParameterQualNelac

Result

UnitResult

Result

Parameter

TEST METHOD: EPA 8021B

< 2.0 NMethyl-t-butyl ether (MTBE) ug/L < 1.0 NBenzene ug/L

< 1.0 NToluene ug/L < 1.0 NEthylbenzene ug/L

< 2.0 NXylenes, Total ug/L < 1.0 N1,3,5-Trimethylbenzene ug/L

< 1.0 N1,2,4-Trimethylbenzene ug/L < 2.0 NNaphthalene ug/L

108 NSurr. 1 (Bromobenzene) % 0 NUnidentified Peaks

002 Date Sampled: 6/2/16Site: MW10-1R 6/6/16 MHMWAnalysis Date:09:01

QualNelac

Result

UnitResult

Result

ParameterQualNelac

Result

UnitResult

Result

Parameter


68.8 NMethyl-t-butyl ether (MTBE) ug/L 254 NBenzene ug/L

103 NToluene ug/L 1,860 NEthylbenzene ug/L

3,160 NXylenes, Total ug/L 46.4 N1,3,5-Trimethylbenzene ug/L

1,520 N1,2,4-Trimethylbenzene ug/L 413 NNaphthalene ug/L

94 NSurr. 1 (Bromobenzene) % > 10 NUnidentified Peaks

003 Date Sampled: 6/2/16Site: Duplicate 6/6/16 MHMWAnalysis Date:09:01

QualNelac

Result

UnitResult

Result

ParameterQualNelac

Result

UnitResult

Result

Parameter


80.1 NMethyl-t-butyl ether (MTBE) ug/L 272 NBenzene ug/L

112 NToluene ug/L 2,060 NEthylbenzene ug/L

3,450 NXylenes, Total ug/L 52.8 N1,3,5-Trimethylbenzene ug/L

1,740 N1,2,4-Trimethylbenzene ug/L 456 NNaphthalene ug/L


004 Date Sampled: 6/2/16Site: MW10-5 6/6/16 MHMWAnalysis Date:09:14

QualNelac

Result

UnitResult

Result

ParameterQualNelac

Result

UnitResult

Result

Parameter


< 2.0 NMethyl-t-butyl ether (MTBE) ug/L 28.1 NBenzene ug/L

< 1.0 NToluene ug/L < 1.0 NEthylbenzene ug/L

< 2.0 NXylenes, Total ug/L < 1.0 N1,3,5-Trimethylbenzene ug/L

< 1.0 N1,2,4-Trimethylbenzene ug/L < 2.0 NNaphthalene ug/L


Documents

U Save Beverage 1302 Williston Road South Burlington, Vermont · 1302 Williston Road South Burlington, Vermont VTDEC Site #90-0496 KAS Job #406060248 JUNE 2016 GROUNDWATER MONITORING