fall 2016 groundwater sampling report
TRANSCRIPT
Stonecipher & Clark Environmental Solutions, LLC
Fall 2016 Groundwater Sampling Report Northeast Auto Accessory
684 Portland Street St. Johnsbury, Vermont
SMS #20114197
1
Fall 2016 Groundwater Sampling Report Northeast Auto Accessory
684 Portland Street St. Johnsbury, Vermont
Prepared For:
RHTL Partners, LLC
Prepared By: Stonecipher & Clark Environmental Solutions, LLC
111 Saranac Street, Studio 15 Littleton, New Hampshire 03561
Project# 2016-002 Stonecipher & Clark Environmental Solutions, LLC
2
Project: 2016-002
December 13, 2016
Mr. Gerold Noyes Hazardous Materials Specialist Agency of Natural Resources, Waste Management Division 103 South Main Street/West Building Waterbury, VT 05671-0404 Subject: Fall 2016 Groundwater Sampling Report - Northeast Collision,
684 Portland Street, St. Johnsbury, Vermont, SMS #20114197
Dear Mr. Noyes:
Stonecipher & Clark Environmental Solutions, LLC, (S&C) has completed the Fall 2016 groundwater sampling round at the above mentioned facility. The following wells were sampled via Method 8021 for VOCs on October 27, 2016: MW-4, MW-5-13, MW-6-13, RW-1-13, MW-7-15, and MW-8-15. The following locations had free product and were therefore not sampled: MW-3 and RW-2-13. Depth to groundwater was measured at MW-1 and MW-2 to calculate groundwater contours.
An interface probe was utilized to measure depth to groundwater in all wells not containing free product prior to sampling. The wells (that did not have free product) were purged of approximately three well volumes of water and allowed to recharge prior to collection of the groundwater sample. Groundwater was encountered at an average of 5.14 feet below grade during monitoring well sampling.
Groundwater
MW-4 was at below VT DEC Groundwater Quality Enforcement Standards (GQES) for all constituents analyzed.
MW-5-13 was above standard for the following analytes: Benzene, Toluene, Ethylbenzene, Total Xylenes, 1,3,5 Trimethylbenzene and 1,2,4 Trimethylbenzene. MtBE and Naphthalene were not detected, yet due to dilution of the sample the detection levels for each were excessive; MTBE was <500 µg/L and Naphthalene was <3,000 µg/L.
MW-6-13 was below detectable limits for all constituents analyzed.
MW-7-15 was above standard for the following analytes: Benzene, Toluene, Ethylbenzene, 1,3,5 Trimethylbenzene and 1,2,4 Trimethylbenzene. MtBE and Naphthalene were not detected, yet due to dilution of the sample the detection levels for each were excessive; MTBE was <100 µg/L and Naphthalene was <500 µg/L.
RW-1-13 was above standard for Benzene and 1,2,4 Trimethylbenzene.
STON
ECIPH
ER &
CLA
RK
ENV
IRO
NM
ENTA
L SOLU
TION
S, LLC
111 Saranac Street, Stu
dio 15, L
ittleton, N
H 03561 603.575.5154 w
ww
.stonecip
heran
dclark.com
3
MW-8-15 exhibited exceedances of the standard for the following constituents: 1,3,5 Trimethylbenzene, 1,2,4 Trimethylbenzene and Naphthalene. Benzene was not detected, yet due to dilution of the sample the detection level was excessive (<10 µg/L).
Free Product
Groundwater continues to be impacted at the Site with pockets of free product observed at MW-3 and RW-2-13. Free product recovery occurred on 7/20 and 10/27. During the visit, fully saturated geosorbs were removed and replaced at MW-3 and RW-2-13. Six ounces of product was removed in July and 1 liter of product was bailed from each well in October. All geosorbs were containerized in a drum on-Site.
Conclusions/Recommendations
Groundwater, based on the Fall 2016 data retrieved from the Northeast facility and the Green Mountain Electric Supply site (located across Portland Street) is calculated to be flowing to the north/northwest. Based on these calculations and as stated previously by S&C, it is likely that impacts from the Northeast facility are flowing beneath Portland Street.
S&C recommends performing bi-annual free product recovery (geosorb replacement) as well as bi-annual groundwater sampling (Spring 2017 and Fall 2017) at all on-Site wells except for MW-1 and MW-2.
Please contact the undersigned with any questions or concerns.
Sincerely,
Jennifer Stonecipher Environmental Project Manager Stonecipher & Clark Environmental Solutions, LLC
EXISTINGBUILDING
FORMER LOCATION: UST
#2 (HEATING OIL)
FORMER LOCATION: UST
#1 (HEATING OIL)
FORMER LOCATION: UST #3
(GASOLINE)
CONCRETE SLAB. FORMER
PUMP ISLAND FOR UST
(GASOLINE)
EXISTING CB
RIM: 608.37APPRO
XIM
ATE
RIG
HT O
F W
AY
EXISTING CB
RIM: 606.86
EXISTING CB
RIM: 608.04
SB4SB5 SB6 SB7
SB8
EXIST DMH
RIM: 609.16
SCALE IN FEET:1" = 40'
WHEN PLOTTED 11" X 17"
(NS)
SB8
EXISTING CB
RIM: 608.00
SB9
604'
(FP)
TOC=608.91'
TOC=609.77'
TOC = 608.30'
EXISTINGBUILDING
EXIS
TIN
G B
UIL
DIN
G
SB-5
SB-3SB-4
6" W
ATER
LIN
E (D
IG
SAFE)
1" W
ATER LIN
E (D
IG
SAFE)
SEW
ER LIN
E (D
IG
SAFE)
MW-1(604.57)
MW-2(604.66)
MW-4(602.75)
RW-2-13(FP)
MW-3(FP)
MW-6-13(603.00)
MW-5-13(602.98)
MW-8-15(603.13)
MW-7-15(603.19)
RW-1-13(602.95)
6
0
4
.
5
'
6
0
4
'
6
0
3
.
5
'
6
0
3
'
NOTE: BASE PLAN INFORMATION
DERIVED FROM SURVEY DATA SHOWN
IN PLAN TITLED: "NORTHEAST AUTO
ACCESSORY - APRIL 2012" GENERATED
BY HORIZONS ENGINEERING, INC.
NORTHEAST AUTO ACCESSORY
SMS#20114197
684 PORTLAND AVENUE
ST. JOHNSBURY, VERMONT
OCTOBER 2016 GROUNDWATER SITE PLAN
BASED ON OCTOBER 2016 DATA
SHEET 1 OF 2
STONECIPHER & CLARK
ENVIRONMENTAL SOLUTIONS, LLC
111 SARANAC STREET, STUDIO 15
LITTLETON, NEW HAMPSHIRE 03561
603.575.5154
EXISTINGBUILDING
FORMER LOCATION: UST
#2 (HEATING OIL)
FORMER LOCATION: UST
#1 (HEATING OIL)
FORMER LOCATION: UST #3
(GASOLINE)
CONCRETE SLAB. FORMER
PUMP ISLAND FOR UST
(GASOLINE)
EXISTING CHANNEL (TYPE UNKNOWN)
ALONG ROAD UNDER POWER LINES.
(EACH SIDE OF MANHOLE)
APPRO
XIM
ATE
RIG
HT O
F W
AY
EXISTING CB
RIM: 608.04
SB4SB5 SB6 SB7
SB8
EXIST DMH
RIM: 609.16
SCALE IN FEET:1" = 40'
WHEN PLOTTED 11" X 17"
(NS)
SB8
SB9604'
(FP)
TOC = 608.30'
EXISTINGBUILDING
EXIS
TIN
G B
UIL
DIN
G
GREEN
M
O
UN
TAIN
ELECTRIC SU
PPLY
SITE #
20134411
NO
RTH
EAST C
OLLISIO
N
SITE #
20114197
GREEN
MO
UN
TAIN
ELECTRIC S
UPPLY
SITE #
20134411
NO
RTH
EAST CO
LLISIO
N
SITE #
20114197
APPROXIMATE FORMER
LOCATION: UST #3
(HEATING OIL)
APPROXIMATE FORMER LOCATION:
UST#1 (GASOLINE)
APPROXIMATE FORMER LOCATION:
UST#2 (GASOLINE)
MW-4(602.75)
RW-2-13(FP)
MW-6-13(603.00)
MW-5-13(602.98)
MW-3(FP)
MW-8-15(603.13)
MW-7-15(603.19)
RW-1-13(602.95)
MW-1(604.57)
MW-2(604.66)
MW-6(601.07)
MW-3(601.68)
MW-1(600.93)
MW-8(601.85)
MW-5(602.08)
MW-2(602.58)
MW-7(604.11)
601.0'
602.5'
603.0
'60
3.5'
604
601.5'
602.0'
6
0
4
.
5
'
6
0
4
'
6
0
3
.
5
'
6
0
3
'
MW-4(602.45)
NOTE: BASE PLAN INFORMATION
DERIVED FROM SURVEY DATA SHOWN
IN PLAN TITLED: "NORTHEAST AUTO
ACCESSORY - APRIL 2012" GENERATED
BY HORIZONS ENGINEERING, INC.
BOUNDARY LINES FOR GREEN
MOUNTAIN ELECTRIC SUPPLY SITE
ARE BASED ON CITY OF ST.
JOHNSBURY TAX MAPS, AND
TOPOGRAPHY IS BASED ON A FIELD
SURVEY USING A NIKON NPL-350
TOTAL STATION IN OCTOBER 2013.
NORTHEAST COLLISION
SMS#20114197
684 PORTLAND AVENUE
ST. JOHNSBURY, VERMONT
OCTOBER 2016 GROUNDWATER
SITE PLAN
SHEET 2 OF 2
STONECIPHER & CLARK
ENVIRONMENTAL SOLUTIONS, LLC
111 SARANAC STREET, STUDIO 15
LITTLETON, NEW HAMPSHIRE 03561
603.575.5154
Groundwater Quality Analytical Results2016‐002 Northeast Collision CenterSMS #20114197
Analytes VT DEC GQESPreventative Action Level
4/13/12 6/24/13 11/20/13 4/14/14 10/15/14 4/6/15 10/15/15 4/24/16 10/27/16TOC 609.77 609.77 609.77 609.77 609.77 609.77 609.77 609.77 609.77Water Level 5.02 5.20 5.10 4.80 5.18 5.20 4.60 5.19 5.20Groundwater Elevation 604.75 604.57 604.67 604.97 604.59 604.57 605.17 604.58 604.57
Benzene 5 0.5 <1 <1 <1 <1 <1 <1Toluene 1,000 500 <1 <1 <1 <1 <1 <1Ethylbenzene 700 350 <1 <1 <1 <1 <1 <1mp‐Xylene NA NA <1 <1 <1 <1 <1 <1o‐Xylene NA NA <1 <1 <1 <1 <1 <1Tota Xylenes 10,000 5,000 BDL BDL BDL BDL BDL BDLTotal BTEX NA NA BDL BDL BDL BDL BDL BDLMethyl‐t‐butyl ether (MTBE) 40 20 <5 <5 <5 <5 <5 <51,3,5 Trimethylbenzene 4 2 <1 <1 <1 <1 <1 <11,2,4 Trimethylbenzene 5 2.5 <1 <1 <1 <1 <1 <1Naphthalene 20 10 <5 <5 <5 <5 <5 <5Notes:
NA ‐ no standard available
GQES ‐ Groundwater Quality Enforcement Standard
MW‐1
< laboratory results below detectable limits
Concentration (µg/L) Concentration (µg/L)
Concentrations in bold exceed enforcement standard
NO LO
NGER SAM
PLED
NO LO
NGER SAM
PLED
NO LO
NGER SAM
PLED
Groundwater Quality Analytical Results2016‐002 Northeast Collision CenterSMS #20114197
Analytes VT DEC GQESPreventative Action Level
4/13/12 6/24/13 11/20/13 4/14/14 10/15/14 4/6/15 10/15/15 4/24/16 10/27/16TOC 608.91 608.91 608.91 608.91 608.91 608.91 608.91 608.91 608.91Water Level 4.40 4.20 4.30 3.90 3.43 4.20 4.17 4.35 4.25Groundwater Elevation 604.51 604.71 604.61 605.01 605.48 604.71 604.74 604.56 604.66
Benzene 5 0.5 <1 <1 <1 <1 <1 <1Toluene 1,000 500 <1 <1 <1 <1 <1 <1Ethylbenzene 700 350 <1 <1 <1 <1 <1 <1mp‐Xylene NA NA <1 <1 <1 <1 <1 <1o‐Xylene NA NA <1 <1 <1 <1 <1 <1Tota Xylenes 10,000 5,000 BDL BDL BDL BDL BDL BDLTotal BTEX NA NA BDL BDL BDL BDL BDL BDLMethyl‐t‐butyl ether (MTBE) 40 20 <5 <5 <5 <5 <5 <51,3,5 Trimethylbenzene 4 2 <1 <1 <1 <1 <1 <11,2,4 Trimethylbenzene 5 2.5 4 <1 <1 <1 <1 <1Naphthalene 20 10 <5 <5 <5 <5 <5 <5Notes:
NA ‐ no standard available
MW‐2
< laboratory results below detectable limits
Concentration (µg/L) Concentration (µg/L)
GQES ‐ Groundwater Quality Enforcement Standard
Concentrations in bold exceed enforcement standard
NO LO
NGER SAM
PLED
NO LO
NGER SAM
PLED
NO LO
NGER SAM
PLED
Groundwater Quality Analytical Results2016‐002 Northeast Collision CenterSMS #20114197
Analytes VT DEC GQESPreventative Action Level
4/13/12 6/24/13 11/20/13 4/14/14 10/15/14 4/6/15 10/15/15 4/24/16 10/27/16TOC 607.74 607.74 608.6 608.6 608.6 608.6 608.6 608.6 608.6Water Level 1.50 NA NA NA NA NA NA NA NAGroundwater Elevation 606.24 NA NA NA NA NA NA NA NA
Benzene 5 0.5Toluene 1,000 500Ethylbenzene 700 350mp‐Xylene NA NAo‐Xylene NA NATota Xylenes 10,000 5,000Total BTEX NA NAMethyl‐t‐butyl ether (MTBE) 40 201,3,5 Trimethylbenzene 4 21,2,4 Trimethylbenzene 5 2.5Naphthalene 20 10Notes:
NA ‐ no standard available
MW‐3
FREE PRODU
CT
FREE PRODU
CT
FREE PRODU
CT
GQES ‐ Groundwater Quality Enforcement Standard
Concentration (µg/L) Concentration (µg/L)
< laboratory results below detectable limits
FREE PRODU
CT
FREE PRODU
CT
FREE PRODU
CT
FREE PRODU
CT
Concentrations in bold exceed enforcement standard
FREE PRODU
CT
FREE PRODU
CT
Groundwater Quality Analytical Results2016‐002 Northeast Collision CenterSMS #20114197
Analytes VT DEC GQESPreventative Action Level
4/13/12 6/24/13 11/20/13 4/14/14 10/15/14 4/6/15 10/15/15 4/24/16 10/27/16TOC 608.43 608.43 608.43 608.43 608.43 608.43 608.43 608.43 608.43Water Level 5.9 5.5 5.83 5.1 5.71 5.55 5.62 5.72 5.68Groundwater Elevation 602.53 602.93 602.6 603.33 602.72 602.88 602.81 602.71 602.75
Benzene 5 0.5 12 11 4 4 6 2 4 3 1Toluene 1,000 500 3 <1 <1 <1 <1 <1 <1 <1 <1Ethylbenzene 700 350 7 14 4 3 6 3 4 4 <1mp‐Xylene NA NA 31 2 1 <1 <1 <1 <1 <1 <1o‐Xylene NA NA 34 <1 <1 <1 <1 <1 <1 <1 <1Tota Xylenes 10,000 5,000 65 <3 <2 BDL BDL BDL BDL BDL BDLTotal BTEX NA NA 87 25 8 7 12 5 8 7 1Methyl‐t‐butyl ether (MTBE) 40 20 28 28 12 <5 9 <5 <5 6 <51,3,5 Trimethylbenzene 4 2 23 1 <1 <1 <1 <1 <1 <1 <11,2,4 Trimethylbenzene 5 2.5 85 6 2 1 <1 1 <1 <1 <1Naphthalene 20 10 62 22 7 <5 <5 <5 <5 <5 <5Notes:
NA ‐ no standard available
MW‐4
Concentration (µg/L) Concentration (µg/L)
GQES ‐ Groundwater Quality Enforcement Standard
Concentrations in bold exceed enforcement standard
< laboratory results below detectable limits
Groundwater Quality Analytical Results2016‐002 Northeast Collision CenterSMS #20114197
Analytes VT DEC GQESPreventative Action Level
6/24/13** 11/20/13* 4/14/14* 10/15/14 4/6/15* 10/15/15^ 4/24/16^ 10/27/16^TOC 608.28 608.28 608.28 608.28 608.28 608.28 608.28 608.28Water Level 4.75 5.15 4.6 5.15 5.2 5.05 5.22 5.30Groundwater Elevation 603.53 603.13 603.68 603.13 603.08 603.23 603.06 602.98
Benzene 5 0.5 21,000 11,000 10,000 12,000 10,000 14,000 15,000 14,000Toluene 1,000 500 130,000 28,000 27,000 23,000 25,000 45,000 55,000 42,000Ethylbenzene 700 350 27,000 3,400 3,200 3,100 2,900 3,800 4,100 3,100mp‐Xylene NA NA 100,000 13,000 13,000 11,000 14,000 17,000 18,000 20,000o‐Xylene NA NA 38,000 5,400 5,400 5,200 6,100 7,300 7,500 8,600Tota Xylenes 10,000 5,000 138,000 18,400 18,400 16,200 20,100 24,300 25,500 28,600Total BTEX NA NA 316,000 60,800 58,600 54,300 58,000 87,100 99,600 87,700Methyl‐t‐butyl ether (MTBE) 40 20 <1,000 <100 <100 <100 <100 <500 <500 <5001,3,5 Trimethylbenzene 4 2 11,000 600 700 500 600 900 700 1,1001,2,4 Trimethylbenzene 5 2.5 31,000 1,800 1,800 1,800 2,200 3,000 2,700 4,000Naphthalene 20 10 <5,000 <500 <500 <500 <500 <3,000 <3,000 <3,000Notes:
NA ‐ no standard available
* Dilution factor of 100** Dilution factor of 1,000^ Dilution factor of 500
MW‐5‐13
< laboratory results below detectable limits
Concentration (µg/L) Concentration (µg/L)
GQES ‐ Groundwater Quality Enforcement Standard
Concentrations in bold exceed enforcement standard
Groundwater Quality Analytical Results2016‐002 Northeast Collision CenterSMS #20114197
Analytes VT DEC GQESPreventative Action Level
6/24/13 11/20/13 4/14/14 10/15/14 4/6/15 10/15/15 4/24/16 10/27/16TOC 608.3 608.3 608.3 608.3 608.3 608.3 608.3 608.3Water Level 4.9 5.23 4.7 5.34 5.1 5.21 5.35 5.30Groundwater Elevation 603.40 603.07 603.60 602.96 603.20 603.09 602.95 603.00
Benzene 5 0.5 100 1 15 <1 9 <1 12 <1Toluene 1,000 500 26 <1 1 <1 <1 <1 <1 <1Ethylbenzene 700 350 70 <1 <1 <1 1 <1 4 <1mp‐Xylene NA NA 21 <1 5 <1 <1 <1 1 <1o‐Xylene NA NA 7 <1 1 <1 <1 <1 <1 <1Tota Xylenes 10,000 5,000 28 BDL 6 BDL BDL BDL 1 BDLTotal BTEX NA NA 224 BDL 22 BDL 10 BDL 17 BDLMethyl‐t‐butyl ether (MTBE) 40 20 <5 <5 <5 <5 <5 <5 <5 <51,3,5 Trimethylbenzene 4 2 15 <1 1 <1 <1 <1 <1 <11,2,4 Trimethylbenzene 5 2.5 66 <1 2 <1 <1 <1 5 <1Naphthalene 20 10 53 <1 <5 <5 <5 <5 <5 <5Notes:
NA ‐ no standard available
MW‐6‐13
< laboratory results below detectable limitsGQES ‐ Groundwater Quality Enforcement Standard
Concentration (µg/L) Concentration (µg/L)
Concentrations in bold exceed enforcement standard
Groundwater Quality Analytical Results2016‐002 Northeast Collision CenterSMS #20114197
Analytes VT DEC GQESPreventative Action Level
6/24/13* 11/20/13 4/14/14 10/15/14 4/6/15 10/15/15 4/24/16 10/27/16TOC 608.35 608.35 608.35 608.35 608.35 608.35 608.35 608.35Water Level 4.94 5.3 4.6 5.25 5.2 5.54 5.3 5.40Groundwater Elevation 603.41 603.05 603.75 603.1 603.15 602.81 603.05 602.95
Benzene 5 0.5 630 26 49 16 12 59 93 6Toluene 1,000 500 260 7 19 2 <1 4 22 <1Ethylbenzene 700 350 190 42 28 35 9 53 140 24mp‐Xylene NA NA 850 110 210 12 3 73 300 12o‐Xylene NA NA 140 12 82 2 <1 17 89 1Tota Xylenes 10,000 5,000 990 122 292 14 3 90 389 13Total BTEX NA NA 2,070 197 388 67 24 206 644 43Methyl‐t‐butyl ether (MTBE) 40 20 <5 <5 <5 <5 <5 <5 <5 <51,3,5 Trimethylbenzene 4 2 64 76 45 <1 <1 2 8 <11,2,4 Trimethylbenzene 5 2.5 190 180 43 16 6 38 120 12Naphthalene 20 10 40 50 7 6 <5 10 28 <5Notes:
NA ‐ no standard available
* Dilution factor of 5
RW‐1‐13
< laboratory results below detectable limits
GQES ‐ Groundwater Quality Enforcement Standard
Concentration (µg/L) Concentration (µg/L)
Concentrations in bold exceed enforcement standard
Groundwater Quality Analytical Results2016‐002 Northeast Collision CenterSMS #20114197
Analytes VT DEC GQESPreventative Action Level
6/24/13 11/20/13 4/14/14 10/15/14 4/6/15 10/15/15 4/24/16 10/27/16TOC 608.6 608.6 608.6 608.6 608.6 608.6 608.6 608.6Water Level NA NA NA NA NA NA NA NAGroundwater Elevation NA NA NA NA NA NA NA NA
Benzene 5 0.5Toluene 1,000 500Ethylbenzene 700 350mp‐Xylene NA NAo‐Xylene NA NATota Xylenes 10,000 5,000Total BTEX NA NAMethyl‐t‐butyl ether (MTBE) 40 201,3,5 Trimethylbenzene 4 21,2,4 Trimethylbenzene 5 2.5Naphthalene 20 10Notes:
NA ‐ no standard available
RW‐2‐13
FREE PRODU
CT
FREE PRODU
CT
FREE PRODU
CT
GQES ‐ Groundwater Quality Enforcement Standard
Concentration (µg/L) Concentration (µg/L)
< laboratory results below detectable limits
FREE PRODU
CT
FREE PRODU
CT
Concentrations in bold exceed enforcement standard
FREE PRODU
CT
FREE PRODU
CT
FREE PRODU
CT
Groundwater Quality Analytical Results2016‐002 Northeast Collision CenterSMS #20114197
Analytes VT DEC GQESPreventative Action Level
8/13/15* 10/15/15** 4/24/16** 10/27/16**TOC 608.31 608.31 608.31 608.31Water Level 4.89 5.00 5.03 5.12Groundwater Elevation 603.42 603.31 603.28 603.19
Benzene 5 0.5 3,000 1,300 1,300 800Toluene 1,000 500 28,000 9,200 7,700 4,400Ethylbenzene 700 350 9,000 2,100 1,600 1,100mp‐Xylene NA NA 35,000 9,200 6,600 4,400o‐Xylene NA NA 13,000 3,400 2,400 1,700Tota Xylenes 10,000 5,000 48,000 12,600 9,000 6,100Total BTEX NA NA 88,000 25,200 19,600 12,400Methyl‐t‐butyl ether (MTBE) 40 20 <1,000 <100 <100 <1001,3,5 Trimethylbenzene 4 2 2,000 500 300 3001,2,4 Trimethylbenzene 5 2.5 7,000 1,800 1,200 900Naphthalene 20 10 <5,000 <500 <500 <500Notes:
NA ‐ no standard available
* Dilution factor of 1,000** Dilution factor of 100
MW‐7‐15
Concentrations in bold exceed enforcement standard
Concentration (µg/L)
GQES ‐ Groundwater Quality Enforcement Standard
Concentration (µg/L)
< laboratory results below detectable limits
Groundwater Quality Analytical Results2016‐002 Northeast Collision CenterSMS #20114197
Analytes VT DEC GQESPreventative Action Level
8/13/15* 10/15/15* 4/24/16* 10/27/16*TOC 607.99 607.99 607.99 607.99Water Level 4.48 4.55 4.65 4.86Groundwater Elevation 603.51 603.44 603.34 603.13
Benzene 5 0.5 <10 <10 10 <10Toluene 1,000 500 560 140 230 210Ethylbenzene 700 350 1,600 480 750 580mp‐Xylene NA NA 4,100 1,100 1,800 1,500o‐Xylene NA NA 1,000 240 360 340Tota Xylenes 10,000 5,000 5,100 1,340 2,160 1,840Total BTEX NA NA 7,260 1,960 3,150 2,630Methyl‐t‐butyl ether (MTBE) 40 20 <10 <10 <10 <101,3,5 Trimethylbenzene 4 2 800 250 320 2301,2,4 Trimethylbenzene 5 2.5 1,800 700 1,000 760Naphthalene 20 10 300 70 90 60Notes:
NA ‐ no standard available
* Dilution factor of 10GQES ‐ Groundwater Quality Enforcement Standard
MW‐8‐15
Concentrations in bold exceed enforcement standard
Concentration (µg/L) Concentration (µg/L)
< laboratory results below detectable limits
2016-002 Northeast Collision CenterFree Product Recovery
RW-1-13 RW-2-13 MW-3
12/9/2013 No free productRemoved 2.5L - inserted
geosorbRemoved 1.5L- inserted
geosorb
12/31/2013Unable to locate well due to thick ice cover
Removed fully saturated geosorb- inserted new
geosorb
Removed half saturated geosorb- inserted new
geosorb
1/30/2014Unable to locate well due to thick ice cover
Removed 9/10 saturated geosorb- inserted new
geosorb
Removed 3/4 saturated geosorb- inserted new
geosorb
2/24/2014Unable to locate well due to thick ice cover
Unable to locate well due to thick ice cover
Unable to locate well due to thick ice cover
4/2/2014Unable to access well,
bailer was frozen to the side of the PVC
Removed fully saturated geosorb- inserted new
geosorb
Removed 3/4 saturated geosorb- inserted new
geosorb
4/30/2014 No free productGeosorb less than 10
percent saturated, did not remove
Geosorb less than 10 percent saturated, did
not remove
8/28/2014 No free productRemoved fully saturated geosorb- inserted new
geosorb
Removed 3/4 saturated geosorb, inserted new
geosorb
11/18/2014 No free productRemoved 3/4 saturated geosorb, inserted new
geosorb
Removed 1/2 saturated geosorb, inserted new
geosorb
4/6/2015 No free productRemoved fully saturated geosorb- inserted new
geosorb
Removed 3/4 saturated geosorb, inserted new
geosorb
10/15/2015 No free productRemoved fully saturated geosorb- inserted new
geosorb
Removed fully saturated geosorb- inserted new
geosorb
4/24/2016 No free productRemoved fully saturated geosorb- inserted new
geosorb
Removed fully saturated geosorb- inserted new
geosorb
7/20/2016 No free product
Removed fully saturated geosorb, bailed out
additional6 ounces product- inserted new geosorb
Geosorb approximately 50 % saturated, flipped
over, replaced in well, no product present on GW
table
10/27/2016 No free product
Removed fully saturated geosorb + additional 1 liter of product- inserted new
geosorb
Removed fully saturated geosorb + additional 1
liter of product- inserted new geosorb