2008 ANNUAL SUMMARY REPORT 

GROUNDWATER MONITORING PROGRAM 

Town Garage/Radio Beacon Site 

Londonderry, New Hampshire

NHDES Site No. 198509001 

Prepared for

Town of Londonderry, New Hampshire 

Prepared by

Sanborn, Head & Associates, Inc. 

File 2049.02 

December 2008
December 10, 2008 

File No. 2049.02

Sherilyn B. Young, Esq. 

Rath, Young and Pignatelli, P.A. 

P.O. Box 1500 

Concord, NH 03302-1500 

Re: 2008 Annual Summary Report - Groundwater Monitoring Program 

Town Garage/Radio Beacon Site 

Londonderry, New Hampshire 

NHDES Site No. 198509001 

Dear Sherry: 

On behalf of the Town of Londonderry (Town), Sanborn, Head & Associates, Inc. (SHA) has 

completed the year 2008 groundwater quality monitoring round at the Town Garage/Radio 

Beacon Site (site). This work has been completed in accordance with the Unilateral 

Administrative Order (UAO) issued to the Town in September 1996 by the United States 

Environmental Protection Agency (USEPA); a Statement of Work (SOW) that defines the 

scope of groundwater quality monitoring to be completed at the site was included in the UAO. 

Further, the monitoring program has been carried out under the auspices of Groundwater 

Management Permit (GMP) No. GWP-198509001-L-003 issued to the Town by the New 

Hampshire Department of Environmental Services (NHDES), effective October 10, 1997 and 

last revised November 26, 2007. 

GROUNDWATER SAMPLING AND ANALYSIS 

One groundwater sample was collected from monitoring well MW-2R on November 6, 2008. 

Prior to purging/sampling monitoring well MW-2R, the groundwater level in the well was 

measured with an electric water level meter. Historical water level data are summarized in 

Table 1. 

The groundwater sample from monitoring well MW-2R1

 was collected using a portable 

submersible bladder pump. Low-flow sampling techniques were used, as described in SHA’s 

November 1996 “Groundwater Sampling and Quality Assurance Plan, Town Garage/Radio 

Beacon Site, Londonderry, New Hampshire.” Water quality parameters including temperature, 

pH, specific conductance, and dissolved oxygen were monitored during purging using an YSI 

Model 600 XLM multi-parameter water quality meter with an in-line flow cell. Upon 

1 Replacement monitoring well MW-2R was installed October 30, 2006 as a replacement to monitoring well 

MW-2D-6. The well installation was summarized in the Site’s 2006 Annual Summary Report dated January 31, 

2006. 
Town of Londonderry 

2049.02 \ 2008 Annual Rpt 

December 10, 2008 

Page 2 

parameter stabilization, the in-line flow cell was disconnected and a groundwater sample 

collected. A summary of stabilized water quality parameter data for the November 2008 round 

is presented on the Groundwater Quality Field Sampling Summary form included in 

Attachment A. Historical water quality parameter data are summarized in Table 1. 

The groundwater sample was placed in 40-milliliter (ml) glass vials with Teflon® septa, which 

were provided, pre-cleaned and pre-preserved with hydrochloric acid (HCl), by the analytical 

laboratory. Following collection, sample containers were stored in coolers packed with ice and 

delivered to Eastern Analytical, Inc. (EAI) of Concord, New Hampshire, a New Hampshire 

certified laboratory, for volatile organic compound (VOC) analysis by USEPA Method 8260B. 

The sample was handled and transported following standard chain-of-custody procedures. A 

trip blank, prepared beforehand by EAI, was also analyzed for VOCs by USEPA Method 

8260B. A copy of EAI’s analytical laboratory data report for this monitoring round is included 

in Attachment B. 

SUMMARY OF ANALYTICAL RESULTS

The November 2008 groundwater quality monitoring results for monitoring well MW-2R 

indicate that 1,1-dichloroethane (1,1-DCA), and 1,1-dichloroethene (1,1-DCE) were the only 

VOCs detected in the sample from MW-2R. There was only one exceedance of groundwater 

cleanup levels, namely 1,1-DCE at a concentration of 9 μg/l. The concentrations of the VOCs 

observed for the November 2008 round are lower than the results for the three prior rounds that 

included well MW-2R, and compared to the historical results for MW-2R and MW-2D-6, are 

the lowest detected to date for this monitoring location. 

The water quality analytical database for site monitoring wells is presented in Table 2. A 

concentration versus time plot for VOCs for MW-2D-6 and MW-2R is presented as Figure 2. 

Constituent-specific cleanup levels established for the Site are indicated on the concentration 

versus time plot. 

CLOSING

Results of the November 2008 groundwater monitoring at the Town Garage/Radio Beacon Site 

in Londonderry, New Hampshire indicate improving groundwater quality conditions in the 

vicinity of monitoring well MW-2R, although 1,1-DCE continues to be detected at a 

concentration slightly above its cleanup level.
Sanborn, 

Head and 

Associate

s, Inc.

Digitally signed by 

Sanborn, Head and 

Associates, Inc. 

DN: cn=Sanborn, Head 

and Associates, Inc., 

o=Sanborn, Head and 

Associates, Inc., ou, 

email=lsmith@sanbornh

ead.com, c=US 

Date: 2008.12.11 

15:10:49 -05'00'
TABLES 
TABLE 1

Summary of Elevations and Field Screening - Monitoring Wells & Residential Wells

Town Garage / Radio Beacon Site

Londonderry, New Hampshire

Sampling

Location

Sampling

Date

Ground

Surface

Elevation

(Feet MSL)

Reference

Point

Elevation

(Feet MSL)

Groundwater 

Elevation 

(Feet MSL)

Temperature 

(°C)

Specific 

Conductance 

(ȝs/cm)

Dissolved 

Oxygen (mg/l)

pH 

(Standard 

Units)

Monitoring Wells

11/26/1996 357.60 9.0 2,910 8.3 6.7

11/20/1997 354.27 11.7 4,160 6.5 5.8

1/1/1998

11/22/1999 351.45 12.2 1,080 3.3 6.1

12/6/2000 352.00** 9.0** 1,500** 7.8** 5.8**

11/19/2001 348.72 13.1 2,870 7.7 5.8

11/15/2002 352.09 13.1 775 3.7 6.0

11/4/2003 352.20 13.0 560 9.8 6.1

11/3/2004 349.84 13.8 1,200 3.8 5.6

11/28/2005 352.51 10.3 1,350 4.9 5.5

11/27/1996 337.65 6.8 7,700 5.7 6.7

11/20/1997 336.20 7.9 5,750 1.5 6.3

11/10/1998 335.44 8.4 7,590 5.3 6.3

11/23/1999 335.54 11.7 6,620 1.2 6.5

11/21/2000 335.93 9.3 6,900 7.8 6.5

11/19/2001 333.81 10.7 6,730 0.0 6.4

11/15/2002 334 69 11 4 6 380 0 1 6 4

MW-2S

MW-2D-2 †† 201.77

359.29 361.79

Monitoring Well Destroyed

356.35 356.04

11/15/2002 334.69 11.4 6,380 0.1 6.4

11/4/2003 335.83 9.7 7,130 0.0 6.9

11/4/2004 334.50 10.5 7,220 0.6 6.5

11/28/2005 336.11 10.3 7,260 0.2 6.4

11/27/1996 351.95 6.9 29,100 2.9 6.9

11/20/1997 345.42 8.2 29,600 3.0 6.5

11/10/1998 347.87 8.9 37,600 8.4 6.7

11/23/1999 344.87 12.5 26,200 0.7 6.7

11/21/2000 349.08 10.4 23,600 2.2 6.8

11/19/2001 343.97 11.6 22,500 0.0 6.7

11/15/2002 348.10 13.3 16,500 0.0 6.7

11/4/2003 348.76 10.2 15,800 0.1 7.2

11/4/2004 346.78 11.5 15,100 0.7 7.0

11/29/2005 349.23 12.3 13,900 0.2 7.0

11/13/2006 351.99 12.5 13,700 0.5 7.0

12/11/2006 351.56 8.8 14,700 0.8 6.9

11/9/2007 352.07 12.9 12,500 0.3 6.8

11/6/2008 352.19 14.2 11,740 1.0 6.8

11/26/1996 334.69 6.9 12,900 0.2 6.9

11/20/1997 333.65 8.9 12,200 1.9 7.3

11/9/1998 333.33 8.5 11,800 0.2 7.6

11/22/1999 334.17 10.1 9,790 0.6 7.6

11/17/2000 334.47 9.9 9,000 0.5 7.5

11/19/2001 333.00 10.1 8,550 0.3 7.4

11/14/2002 333.79 10.0 8,940 † 7.5

11/5/2003 334.44 9.1 8,300 0.3 7.5

11/3/2004 333.98 9.7 7,930 0.3 7.3

11/28/2005 335.08 8.7 7,480 0.6 7.2

MW-2D-6

MW-3D

MW-2R 

Installed 

10/30/06

†† 315.77

339.72 341.54

355.99 355.69

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TABLE 1

Summary of Elevations and Field Screening - Monitoring Wells & Residential Wells

Town Garage / Radio Beacon Site

Londonderry, New Hampshire

Sampling

Location

Sampling

Date

Ground

Surface

Elevation

(Feet MSL)

Reference

Point

Elevation

(Feet MSL)

Groundwater 

Elevation 

(Feet MSL)

Temperature 

(°C)

Specific 

Conductance 

(ȝs/cm)

Dissolved 

Oxygen (mg/l)

pH 

(Standard 

Units)

11/25/1996 345.71 6.4 58,600 2.6 7.0

11/20/1997 343.06 6.1 40,500 2.3 5.9

11/10/1998 344.44 7.9 35,400 0.0 6.7

11/23/1999 344.66 12.5 31,400 1.1 6.3

11/21/2000 345.81 7.4 28,200 4.1 6.7

11/20/2001 344.16 8.0 28,100 0.8 6.4

11/15/2002 344.06 11.9 23,700 0.0 6.9

11/4/2003 346.72 6.2 23,600 0.7 6.7

11/4/2004 344.19 8.6 21,100 0.7 6.5

11/29/2005 347.79 10.6 19,900 0.7 6.4

11/25/1996 372.18 7.5 3,400 2.5 7.0

11/20/1997 370.26 7.2 19,400 2.1 6.7

11/10/1998 370.26 7.1 19,000 0.3 7.2

11/23/1999 370.83 11.8 14,570 0.6 7.3

11/21/2000 371.18 8.1 12,900 3.3 7.3

11/20/2001 368.40 9.0 11,900 0.9 7.2

11/15/2002 369.64 10.9 11,000 0.1 7.2

11/4/2003 368 67 8 2 11 500 0 3 7 7

MW-4D-3

MW-4D-2

384.24 343.24

384.24 309.74

11/4/2003 368.67 8.2 11,500 0.3 7.7

11/4/2004 369.30 9.3 11,300 0.7 7.3

11/29/2005 371.63 9.9 11,400 0.2 7.3

11/25/1996 373.06 7.9 19,100 2.2 7.0

11/20/1997 370.26 9.4 12,000 4.9 5.2

11/10/1998 370.44 9.1 18,900 1.4 5.9

11/23/1999 372.22 13.6 16,500 0.6 6.0

12/6/2000 372.67** 9.5** 11,000** 1.3** 5.9**

11/20/2001 369.69 9.7 16,100 0.1 6.0

11/15/2002 370.15 11.6 14,300 0.4 5.9

11/4/2003 372.57 10.1 12,000 1.3 6.2

11/4/2004 371.66 9.4 14,400 0.8 6.2

11/29/2005 373.90 11.0 13,500 0.6 6.2

11/25/1996 376.86 6.9 17,700 3.8 7.0

11/20/1997 373.36 8.1 14,100 2.2 5.9

11/10/1998 372.88 7.9 18,500 1.2 6.6

11/23/1999 373.66 12.6 15,370 2.3 6.5

11/21/2000 374.24 8.6 15,200 5.0 6.5

11/26/1996 333.00 7.9 20,700 2.9 7.0

11/20/1997 * 7.7 20,200 2.6 6.3

11/9/1998 * 8.1 19,100 2.9 7.3

11/22/1999 331.39 10.0 15,210 0.4 7.2

11/17/2000 331.64 9.3 12,600 0.6 7.4

11/19/2001 330.36 9.4 12,000 0.8 7.2

11/14/2002 330.79 10.1 13,000 † 7.3

11/5/2003 331.54 8.5 11,200 1.0 7.4

11/3/2004 330.31 9.5 10,400 0.4 7.4

11/28/2005 331.66 9.1 8,640 0.0 7.3

MW-6D-2 338.35 241.28

MW-5S 383.00 385.00

MW-5D-4 382.63 327.53

S:\CONDATA\2000s\2049.02\originals\2008 Annual Report\Tables.xls Page 2 of 4 Sanborn, Head & Associates, Inc.
TABLE 1

Summary of Elevations and Field Screening - Monitoring Wells & Residential Wells

Town Garage / Radio Beacon Site

Londonderry, New Hampshire

Sampling

Location

Sampling

Date

Ground

Surface

Elevation

(Feet MSL)

Reference

Point

Elevation

(Feet MSL)

Groundwater 

Elevation 

(Feet MSL)

Temperature 

(°C)

Specific 

Conductance 

(ȝs/cm)

Dissolved 

Oxygen (mg/l)

pH 

(Standard 

Units)

11/26/1996 * 7.8 11,000 2.9 6.9

11/20/1997 * 8.1 19,100 2.0 6.8

11/9/1998 * 7.8 19,800 0.5 7.1

11/22/1999 * 11.6 11,780 0.4 7.2

11/17/2000 * 10.0 11,300 0.4 7.3

11/19/2001 * 10.1 13,200 0.0 7.1

11/14/2002 * 10.3 12,300 † 7.2

11/5/2003 * 7.6 7,300 0.3 7.5

11/3/2004 * 9.9 7,080 0.1 7.2

11/28/2005 * 9.0 3,530 0.3 7.3

11/27/1996 339.69 9.7 24,400 6.5 7.0

11/20/1997 336.95 10.8 19,700 0.1 7.3

11/9/1998 337.35 12.0 16,200 0.0 7.5

11/22/1999 338.23 13.1 14,930 0.6 7.4

11/17/2000 339.08 12.9 11,800 0.3 7.1

11/19/2001 336.46 11.8 10,800 0.0 7.5

11/14/2002 338.53 11.0 9,790 0.1 7.3

11/4/2003 339 45 11 5 8 400 0 4 7 5

MW-8D 357.16 359.15

MW-6D-4 338.35 309.28

11/4/2003 339.45 11.5 8,400 0.4 7.5

11/3/2004 338.28 11.5 8,650 0.2 7.5

11/28/2005 339.45 11.6 8,000 1.5 8.2

Residential Wells

11/20/1997 - - - 2.4 2,930 + 6.3

11/18/1999 - - - 7.9 1,033 + 6.6

11/20/1997 - - - 10.7 950 + 7.5

11/27/1999 - - - 11 1,240 + 7.5

MW-16D 11/18/1999 - - - 6.9 533 + 6.9

11/20/1997 - - - 4.1 1,680 + 6.3

11/18/1999 - - - 6.8 1,944 + 6.6

11/20/1997 - - - 3.3 2,510 + 6.0

11/18/1999 - - - 6.8 8,980 + 6.5

11/16/2001 - - - 17.2 3,310 + 6.3

11/4/2003 - - - 8.5 980 + 6.6

11/28/2005 - - - 10.5 340 + 6.6

11/20/1997 - - - 3.4 500 + 6.4

11/18/1999 - - - 6.2 446 + 7.3

11/16/2001 - - - 17.4 420 + 7.0

11/4/2003 - - - 8.9 430 + 7.4

11/28/2005 - - - 10.6 490 + 7.5

11/20/1997 - - - 3.3 550 + 6.5

11/22/1999 - - - 14.5 545 + 6.9

11/20/1997 - - - 1.9 590 + 6.4

11/18/1999 - - - 8.2 660 + 6.7

11/20/2001 - - - 8.3 860 + 6.2

11/4/2003 - - - 9.5 960 + 7.2

11/28/2005 - - - 12.1 560 + 6.8

MW-23D

MW-14D

MW-15D

MW-18D

MW-22D

MW-19D

MW-20D

S:\CONDATA\2000s\2049.02\originals\2008 Annual Report\Tables.xls Page 3 of 4 Sanborn, Head & Associates, Inc.
TABLE 1

Summary of Elevations and Field Screening - Monitoring Wells & Residential Wells

Town Garage / Radio Beacon Site

Londonderry, New Hampshire

Notes:

1. Groundwater levels and water quality field screening parameters were measured by SHA on the dates indicated.

2. Groundwater level measurements in overburden and bedrock monitoring wells were obtained with either a Slope Indicator Company or

a QED Environmental Systems electric water level meter. Groundwater level measurements in multi-level monitoring wells were obtained

using previously-installed Geokon, Inc. vibrating wire pressure transducers and a Geokon, Inc. GK-401 readout box.

3. Water quality parameters obtained for monitoring wells in November 1996, 1997, and 1998 were measured in an in-line flow cell using

an O.I. Analytical Aqua-CheckTM Water Analyzer; in November 1999 were measured in an in-line flow cell using an Orion Model 830

dissolved oxygen meter, an Orion Model 130 conductivity meter, and an Orion Model 260 pH meter; and in November/December 2000,

November 2001, November 2002 (pH, temperature, and specific conductance), November 2003, November 2004, and November 2008

were measured using a YSI Model 600XLM multi-parameter water quality meter with in-line flow cell; and, in November 2005,

November and December 2006, and November 2007 were measured using a YSI Model 556MPS multi-parameter water quality meter

with in-line flow cell. In November 2002 dissolved oxygen was measured using a YSI 85 dissolved oxygen meter, located within a

separate flow cell; the flow cell containing the dissolved oxygen probe was connected in series and upstream of the flow cell containing

the pH, specific conductance, and temperature probes, as described in U.S. Environmental Protection Agency Region I, Low Stress (low

flow) Purging and Sampling Procedure for the Collection of Ground Water Samples from Monitoring Wells, July 30, 1996, Revision 2.

4. Water quality parameters obtained for residential wells in November 1997 were measured using an Extech Oyster pH/conductivity

probe, in November 1999 and 2001 using a Cole Parmer pH/Con Series 10 meter, and in November 2003 and 2005 using a Hanna HI

991301 portable pH/EC/TDS/Temperature meter.

5. Groundwater level measurements were referenced to the top of steel casing elevation for the overburden and bedrock monitoring wells

and to the pressure transducer elevation in m p g ulti-level monitoring wells. Groundwater level measurements in MW-2R were referenced to

top of PVC. Elevations are presented in feet above mean sea level (MSL).

6. Parameters reported for monitoring wells represent values obtained after parameter measurements stabilized; and for residential wells,

represent values obtained after allowing the water to run for approximately 15 minutes to purge stagnant water from the piping system.

7. "*" indicates that the pressure transducers installed in MW-6D-2 and MW-6D-4 were not operational at the time of measurement.

"†" indicates that the dissolved oxygen probe was not operational at the time of measurement.

"††" indicates that ground surface elevation in the vicinity of monitoring well MW-2D was altered during construction of the

Saddleback residential neighborhood in 1997/1998.

"**" indicates measurement from December 6, 2000 when well was resampled because the initial sample collected on November 16,

2000 was analyzed by the laboratory past its holding time.

"-" indicates that water level was not measured in the residential wells.

"+" indicates that dissolved oxygen was not measured in groundwater from these wells.

8. The ground surface and reference elevations indicated for MW-2S are for the replacement well installed on November 18, 1999 by

Capital Environmental Drilling, Inc. of Dunbarton, New Hampshire. Prior to the installation of the replacement well, the ground surface

and reference elevations for MW-2S were 359.29 feet and 361.79 feet, respectively.

9. Prior to the 2001 sampling round, Amendment No. 1 to the Statement of Work (SOW) was approved by USEPA allowing sampling

locations MW-5D-4, MW-12D, MW-14D, MW-15D, MW-16D, MW-18D, and MW-22D to be dropped from the groundwater monitoring

program.

10. Prior to the 2006 sampling round, Revised Amendment No. 2 to the SOW was approved by USEPA allowing sampling locations MW2S, MW-2D-2, MW-2D-6, MW-3D, MW-4D-2, MW-4D-3, MW-5S, MW-6D-2, MW-6D-4, MW-8D, MW-19D, MW-20D, and MW23D to be dropped from the groundwater monitoring program.

11. Monitoring well MW-2R was installed on October 30, 2006 as a replacement to monitoring well MW-2D-6.

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TABLE 2

Summary of VOCs and Chloride Analytical Data - Monitoring Wells

Town Garage / Radio Beacon Site

Londonderry, New Hampshire

Monitoring Well

Location

Chloride

(mg/l)

1,1-DCA

(μg/l)

1,1-DCE

(μg/l)

1,1,1-TCA

(μg/l) 

 Other VOCs

(μg/l)

Cleanup Levels 250 mg/l 81 μg/l 7 μg/l 200 μg/l

Nov-90 440 BDL BDL BDL 

5/9/1994 257 BDL BDL BDL 2.20 - THM

11/3/1994 NS BDL BDL BDL 4.20 - THM

4/26/1995 192 BDL BDL BDL 2.5 - THM

11/1/1990 NS BDL BDL BDL 

5/9/1994 833 BDL BDL BDL

12/6/1994 797 BDL BDL BDL

4/26/1995 810 BDL BDL BDL

Nov-90 3,410 74 18 790

5/11/1994 1,682 59 15 200

11/3/1994 1,170 150 29 450

4/21/1995 1,211 78 25 200

10/12/1995 2,440 150 31 410 14 - MTBE

5/2/1996 760 30 6.7 79

11/26/1996 NS 23 4 59

11/20/1997 NS 33 8 81

Replacement Well

installed 11/18/99 11/22/1999 NS BDL BDL 4

12/6/2000 NS 4 1 9

11/19/2001 NS 6 2 12 8 THM

Date

MW-1S

MW-1D

MW-2S

11/19/2001 NS 6 2 12 8 - THM

11/15/2002 NS BDL BDL BDL

11/4/2003 NS BDL BDL BDL 5 - THM

11/3/2004 NS BDL BDL BDL

11/28/2005 NS BDL BDL BDL

MW-2D* Nov-90 3,960 46 41 BDL

4/20/1995 5,749 100 9.1 7.3 180 - MTBE

24 - Toluene

10/13/1995 4,090 31 5.2 6.3

110 - MEK

4.8 - THM

6.1 - Toluene

2.2 - Carbon disulfide

5/1/1996 4,100 69 12 5.3

3.5 - Carbon disulfide

3.3 - THM

130 - MEK

10 - Toluene

5.6 - Chloroethane

12/6/1994 5,420 46 4.5 6.9 12 - Toluene

390 - MEK

4/20/1995 5,484 140 13 BDL 72 - Toluene

10/13/1995 4,270 160 17 BDL 75 - Toluene

6.7 - Dimethyl sulfide

5/1/1996 2,800 87 19 BDL

64 - Acetone

8.4 - Carbon disulfide

120 - Toluene

11/27/1996 NS 20 BDL BDL 180 - Toluene

600 - MEK

MW-2S

MW-2D-1

MW-2D-2

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TABLE 2

Summary of VOCs and Chloride Analytical Data - Monitoring Wells

Town Garage / Radio Beacon Site

Londonderry, New Hampshire

Monitoring Well

Location

Chloride

(mg/l)

1,1-DCA

(μg/l)

1,1-DCE

(μg/l)

1,1,1-TCA

(μg/l) 

 Other VOCs

(μg/l)

Cleanup Levels 250 mg/l 81 μg/l 7 μg/l 200 μg/l

Date

11/20/1997 NS 12 9 BDL

82 - Toluene

220 - MEK

10 - 2-Hexanone

11/10/1998 NS 9 8 BDL 67 - Toluene

60 - MEK

11/23/1999 NS 5 4 BDL 14 - Toluene

10 - MEK

11/21/2000 NS 6 4 BDL

10 - Acetone

30 - MEK

11 - Toluene

11/19/2001 NS 6 4 BDL

20 - Acetone

20 - MEK

14 - Toluene

11/15/2002 NS 4 3 BDL

20 - Acetone

10 - MEK

13 - Toluene

11/4/2003 NS 4 3 BDL 10 - Acetone

9 - Toluene

11/4/2004 NS 6 3 BDL 20 - Acetone

11 T l

MW-2D-2

(cont.)

11 - Toluene

11/28/2005 NS 6 3 BDL 20 - Acetone

13 - Toluene

12/6/1994 2,339 7 6.2 2.6 1.20 - Toluene

4/20/1995 2,458 6.5 5.1 1.7 1.20 - Toluene

10/13/1995 2,410 6.6 5.5 1.7 1.5 - MTBE

5/1/1996 2,400 7.8 9.2 BDL 3.3 - MTBE

6/3/1994 NS BDL BDL 7.6

12/6/1994 7,390 11 8 6.4

4/20/1995 7,979 12 8 5.5

10/12/1995 8,810 14 9.9 5.7 2 - MTBE

5/1/1996 8,700 22 20 9.9 2.8 - MTBE

6/3/1994 36,000 33 17 34

12/6/1994 18,980 19 15 23

4/20/1995 17,940 34 20 27

10/12/1995 17,400 37 25 20 2.4 - MTBE

5/1/1996 18,800 50 44 30 2.1 - Chloroethane

6/3/1994 10,900 100 37 300

12/6/1994 12,410 100 48 360

4/20/1995 11,530 120 58 280

10/12/1995 9,000 120 62 320

5/1/1996 11,300 150 86 360 6.9 - Chloroethane

11/27/1996 NS 110 50 240

11/20/1997 NS 100 64 160 1 - Toluene

11/10/1998 NS 110 58 150 1 - Toluene

7 - Chloroethane

11/23/1999 NS 86 40 85 8 - Chloroethane

11/21/2000 NS 120 48 56 13 - Chloroethane

MW-2D-5

MW-2D-3

MW-2D-4

MW-2D-6

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TABLE 2

Summary of VOCs and Chloride Analytical Data - Monitoring Wells

Town Garage / Radio Beacon Site

Londonderry, New Hampshire

Monitoring Well

Location

Chloride

(mg/l)

1,1-DCA

(μg/l)

1,1-DCE

(μg/l)

1,1,1-TCA

(μg/l) 

 Other VOCs

(μg/l)

Cleanup Levels 250 mg/l 81 μg/l 7 μg/l 200 μg/l

Date

11/19/2001 NS 100 48 52 17 - Chloroethane

11/15/2002 NS 57 28 28 7 - Chloroethane

11/4/2003 NS 57 28 19 10 - Chloroethane

11/4/2004 NS 46 18 11 7 - Chloroethane

11/29/2005 NS 36 18 8 5 - Chloroethane

11/13/2006 NS 33 18 7 5 - Chloroethane

12/11/2006 NS 36 21 8 6 - Chloroethane

11/9/2007 NS 21 14 3

11/6/2008 NS 17 9 BDL

Nov-90 42 BDL BDL BDL

5/17/1994 39 BDL BDL BDL

11/3/1994 74 6.8 BDL BDL

4/17/1995 29 BDL BDL BDL

10/11/1995 137 BDL BDL BDL

1.1 - Chloroethane

1.7 - THM

2.5 - MTBE

5/13/1996 20 BDL BDL BDL

Nov-90 580 15 BDL BDL

5/17/1994 4 537 11 5 8 BDL

MW-3S

MW-2R

Installed 10/30/06

MW-2D-6

(cont.)

5/17/1994 4,537 11 5.8 BDL

12/1/1994 4,260 11 6.2 BDL

4/17/1995 4,425 9.4 5.1 BDL

10/11/1995 212 11 5.2 BDL

5/13/1996 4,400 12 8.3 BDL

11/26/1996 NS 8 4 BDL

11/20/1997 NS 8 6 BDL

11/9/1998 NS 7 4 BDL

11/22/1999 NS 5 3 BDL

11/17/2000 NS 6 2 BDL

11/19/2001 NS 6 2 BDL

11/14/2002 NS 4 2 BDL

11/5/2003 NS 4 1 BDL

11/3/2004 NS 3 1 BDL

11/28/2005 NS 3 1 BDL

Nov-90 2,880 BDL BDL BDL

5/11/1994 1,124 4.2 BDL BDL 1.40 - Chloroethane

11/3/1994 3,124 6.6 BDL BDL

4/25/1995 2,010 3.6 BDL BDL 4.10 - MTBE

2.20 - Chloroethane

10/17/1995 3,300 4.6 BDL BDL 1.2 - MTBE

4/24/1996 1,210 2.8 BDL BDL 2.7 - Chloroethane

MW-4D* Nov-90 23,500 19 18 25

MW-4D-1 4/26/1996 3,810 7.7 5.9 3.8

2 - Carbon disulfide

6.2 - THM

43 - MEK

2.1 - Methylene chloride

2.9 - Toluene

MW-3D

MW-4S

S:\CONDATA\2000s\2049.02\originals\2008 Annual Report\Tables.xls Page 3 of 8 Sanborn, Head & Associates, Inc.
TABLE 2

Summary of VOCs and Chloride Analytical Data - Monitoring Wells

Town Garage / Radio Beacon Site

Londonderry, New Hampshire

Monitoring Well

Location

Chloride

(mg/l)

1,1-DCA

(μg/l)

1,1-DCE

(μg/l)

1,1,1-TCA

(μg/l) 

 Other VOCs

(μg/l)

Cleanup Levels 250 mg/l 81 μg/l 7 μg/l 200 μg/l

Date

4/26/1995 24,850 5.1 7.5 4.2 3.50 - THM

9.80 - Toluene

4/26/1996 22,300 8 11 4.5

2.5 - Carbon disulfide

3.2 - THM

3 - Methylene Chloride

4.5 - Toluene

11/25/1996 NS 7 7 3 3 - THM

4 - Toluene

11/20/1997 NS 10 10 2 2 - THM

3 - Toluene

11/10/1998 NS 9 5 BDL 2 - Toluene

11/23/1999 NS 9 5 BDL 4 - Toluene

20 - MEK

11/21/2000 NS 13 6 BDL

20 - Acetone

50 - MEK

4 - Toluene

11/20/2001 NS 13 8 3

20 - Acetone

2 -THM

40 - MEK

4 l

MW-4D-2

4 - Toluene

11/15/2002 NS 6 2 BDL 20 - MEK

3 - Toluene

11/4/2003 NS 9 6 3

20 - Acetone

2 -THM

30 - MEK

4 - Toluene

11/4/2004 NS 9 5 BDL 20 - MEK

4 - Toluene

11/29/2005 NS 9 6 2

10 - Acetone

20 - MEK

4 - Toluene

6/2/1994 22,000 7.6 6.5 41 3.50 - MTBE

12/6/1994 19,720 9.2 6.9 43 2.90 - MTBE

4/26/1995 12,000 9.5 7.5 31

10/17/1995 12,900 8.9 3.6 21 2.2 - MTBE

4/26/1996 13,700 11 5.6 24 2.4 - MTBE

2.7 - Chloroethane

11/25/1996 NS 9 2 15

11/20/1997 NS 10 2 10

11/10/1998 NS 7 1 6

11/23/1999 NS 4 BDL 3

11/21/2000 NS 3 BDL BDL

11/20/2001 NS 3 BDL BDL

11/15/2002 NS BDL BDL BDL

11/4/2003 NS BDL BDL BDL

11/4/2004 NS BDL BDL BDL

11/29/2005 NS BDL BDL BDL

MW-4D-3

S:\CONDATA\2000s\2049.02\originals\2008 Annual Report\Tables.xls Page 4 of 8 Sanborn, Head & Associates, Inc.
TABLE 2

Summary of VOCs and Chloride Analytical Data - Monitoring Wells

Town Garage / Radio Beacon Site

Londonderry, New Hampshire

Monitoring Well

Location

Chloride

(mg/l)

1,1-DCA

(μg/l)

1,1-DCE

(μg/l)

1,1,1-TCA

(μg/l) 

 Other VOCs

(μg/l)

Cleanup Levels 250 mg/l 81 μg/l 7 μg/l 200 μg/l

Date

Nov-90 3,550 14 21 190

5/18/1994 3,640 2.2 13 89

11/3/1994 2,040 BDL 14 100

4/25/1995 4,072 BDL 9.4 43

10/17/1995 3,000 2.1 13 64 1.4 - PCE

4/24/1996 5,120 2.2 15 81

11/25/1996 NS BDL 9 55

11/20/1997 NS BDL 12 52

11/10/1998 NS BDL 5 27

11/23/1999 NS BDL 4 21

12/6/2000 NS BDL 5 19 7 - MTBE

11/20/2001 NS BDL 3 11 10 - MTBE

11/15/2002 NS BDL 4 11 5 - MTBE

11/4/2003 NS BDL 3 9

11/4/2004 NS BDL 2 5

11/29/2005 NS BDL 1 4

MW-5D* Nov-90 1,110 9 10 66

MW-5D-1 4/25/1996 NS 5 2.4 4.8

96 - Acetone

2.4 - Carbon disulfide

MW-5S

20 - Toluene

MW-5D-2 4/25/1996 1,290 BDL BDL 7.1

5.2 - Carbon disulfide

5.1 - THM

4.1 - Toluene 

6/3/1994 1,900 3.1 5.4 15

4/25/1996 1,790 BDL 2.6 6.3

6/3/1994 6,900 NS NS NS

12/6/1994 6,110 BDL BDL 4.5

4/25/1995 5,780 BDL BDL BDL

10/11/1995 5,760 1 TRACE 2.2 1.6 - MTBE

4/25/1996 6,030 BDL BDL 3.7 3.5 - MTBE

11/25/1996 NS BDL BDL 2

11/20/1997 NS BDL BDL BDL

11/10/1998 NS BDL BDL BDL

11/23/1999 NS BDL BDL BDL

11/21/2000 NS BDL BDL BDL 10 - MTBE

Nov-90 100 BDL BDL BDL

5/17/1994 191 BDL BDL BDL

5/25/1994 174 NS NS NS

11/3/1994 301 BDL BDL BDL

4/17/1995 118 BDL BDL BDL

MW-6D* 11/1/1990 NS 13 6 BDL

6/2/1994 NS 6.6 2.5 BDL

3.80 - THM

7.50 - Toluene

340 - MEK

150 - Acetone

5/9/1996 8,480 16 2.2 BDL

7.8 - Carbon disulfide

40 - MEK

25 - Toluene

MW-6D-1

MW-5D-4

MW-6S

MW-5D-3

S:\CONDATA\2000s\2049.02\originals\2008 Annual Report\Tables.xls Page 5 of 8 Sanborn, Head & Associates, Inc.
TABLE 2

Summary of VOCs and Chloride Analytical Data - Monitoring Wells

Town Garage / Radio Beacon Site

Londonderry, New Hampshire

Monitoring Well

Location

Chloride

(mg/l)

1,1-DCA

(μg/l)

1,1-DCE

(μg/l)

1,1,1-TCA

(μg/l) 

 Other VOCs

(μg/l)

Cleanup Levels 250 mg/l 81 μg/l 7 μg/l 200 μg/l

Date

6/2/1994 8,800 11 7 BDL 1.50 - Toluene

12/1/1994 9,050 13 7.1 BDL

4/20/1995 8,714 10 6.3 BDL 1.10 - MTBE

1.80 - Toluene

10/10/1995 9,300 12 6.1 BDL 2.3 - MTBE

5/9/1996 7,350 11 6.8 BDL 2.6 - Toluene

11/26/1996 NS 10 5 BDL

11/20/1997 NS 12 8 BDL 1 - Toluene

11/9/1998 NS 10 6 BDL 2 - Toluene

11/22/1999 NS 9 4 BDL 1 - Toluene

11/17/2000 NS 11 4 BDL

11/19/2001 NS 11 5 BDL 1 - Toluene

11/14/2002 NS 13 5 BDL 1 - Toluene

11/5/2003 NS 9 3 BDL 2 - Toluene

11/3/2004 NS 8 2 BDL 1 - Toluene

11/28/2005 NS 6 1 BDL 1 - Toluene

6/2/1994 2,200 3.2 1.5 BDL

12/1/1994 1,860 3.6 1.7 BDL 1.50 - Toluene

MW-6D-3 4/20/1995 2,379 3 1.4 BDL 1.50 - Toluene

MW-6D-2

10/10/1995 7,850 14 6.3 BDL 2.40 - MTBE

5/9/1996 1,570 2.6 BDL BDL

6/2/1994 3,800 5.2 BDL BDL 2.60 - 1,2 DCA

12/1/1994 4,590 8.5 3.4 BDL

4/20/1995 3,621 5 2.1 BDL

10/10/1995 7,410 18 6.6 4.5 1.40 - MTBE

5/9/1996 2,210 3.5 2.1 BDL

11/26/1996 NS 6 3 BDL 1 - Toluene

11/20/1997 NS 18 9 BDL

11/9/1998 NS 16 7 BDL 1 - Toluene

11/22/1999 NS 9 4 BDL

11/17/2000 NS 12 4 BDL

11/19/2001 NS 17 6 BDL

11/14/2002 NS 16 5 BDL 1 - Toluene

11/5/2003 NS 7 2 BDL

11/3/2004 NS 6 2 BDL

11/28/2005 NS 2 BDL BDL 1 - Toluene

Nov-90 46 BDL BDL BDL

5/17/1994 95 BDL BDL BDL

11/3/1994 107 BDL BDL BDL

4/17/1995 70 BDL BDL BDL

11/1/1990 35 BDL BDL BDL

5/17/1994 105 BDL BDL BDL

12/6/1994 103 BDL BDL BDL

4/17/1995 99 BDL BDL BDL

MW-7S

MW-6D-4

MW-7D

S:\CONDATA\2000s\2049.02\originals\2008 Annual Report\Tables.xls Page 6 of 8 Sanborn, Head & Associates, Inc.
TABLE 2

Summary of VOCs and Chloride Analytical Data - Monitoring Wells

Town Garage / Radio Beacon Site

Londonderry, New Hampshire

Monitoring Well

Location

Chloride

(mg/l)

1,1-DCA

(μg/l)

1,1-DCE

(μg/l)

1,1,1-TCA

(μg/l) 

 Other VOCs

(μg/l)

Cleanup Levels 250 mg/l 81 μg/l 7 μg/l 200 μg/l

Date

Nov-90 3,460 BDL BDL BDL

5/10/1994 597 BDL BDL BDL

11/3/1994 2,105 2.1 BDL 4.6

4/18/1995 895 BDL BDL BDL

10/16/1995 2,700 BDL BDL 5.8

5/3/1996 865 BDL BDL BDL

Nov-90 9,130 48 28 BDL

5/10/1994 1,004 BDL BDL 2

11/3/1994 2,439 2.7 1.3 2.7

4/18/1995 1,122 BDL BDL 1.2

10/16/1995 8,700 11 6 2.9 1.8 - MTBE

5/3/1996 2,140 2.5 BDL 3

11/27/1996 NS 7 4 BDL

11/20/1997 NS 7 5 BDL

11/9/1998 NS 5 3 BDL

11/22/1999 NS 3 2 BDL

16 - Chloromethane

21 - Vinyl Chloride

20 - Acetone

MW-8S

MW-8D

11/17/2000 NS 3 1 BDL 15 - Carbon Disulfide

46 - Benzene

9 - Toluene

4 - Styrene

11/19/2001 NS 4 1 BDL

11/14/2002 NS 2 1 BDL

11/4/2003 NS 3 1 BDL

11/3/2004 NS 2 BDL BDL

11/28/2005 NS BDL BDL BDL

Nov-90 530 BDL BDL BDL

5/11/1994 499 BDL BDL 1.6

11/3/1994 869 BDL BDL 12

4/18/1995 642 BDL BDL 1.2

10/13/1995 860 BDL BDL 11

5/2/1996 490 BDL BDL BDL

6/2/1996 191 BDL BDL BDL

12/8/1994 347 BDL BDL BDL 1.4 - Toluene

4/26/1995 228 BDL BDL BDL

10/17/1995 200 BDL BDL BDL

5/7/1996 130 BDL BDL BDL

5/18/1994 148 1.5 BDL BDL 1.1 - Chloromethane

12/9/1994 118 2.3 BDL BDL

4/26/1995 162 1.4 BDL BDL

10/17/1995 200 1.8 BDL BDL

5/7/1996 156 BDL BDL BDL

RWGD

MW-9S

RWGS

S:\CONDATA\2000s\2049.02\originals\2008 Annual Report\Tables.xls Page 7 of 8 Sanborn, Head & Associates, Inc.
TABLE 2

Summary of VOCs and Chloride Analytical Data - Monitoring Wells

Town Garage / Radio Beacon Site

Londonderry, New Hampshire

Notes:

1. "1,1 DCA" indicates 1,1-dichloroethane.

"1,1 DCE" indicates 1,1-dichloroethene.

"1,1,1 TCA" indicates 1,1,1-trichloroethane.

"MEK" indicates methyl-ethyl-ketone.

"MTBE" indicates methyl-t-butyl ether.

"THM" indicates chloroform.

"BDL" indicates below detection limit.

"NS" indicates not sampled.

2. Underline indicates that the well was sampled during 2008.

3. Shading indicates exceedance of Site Cleanup Level.

4. "*" indicates that monitoring wells MW-2D, MW-4D, MW-5D, and MW-6D were

converted to permanent Solinst multilevel wells in 1992.

5. Cleanup levels: chloride = 250 mg/l; 1,1 DCA = 81 μg/l; 1,1 DCE = 7 μg/l; 1,1,1 TCA =

200 μg/l. Note that exceedances are shaded.

6. Although not shaded in the above table, the November 2000 sample from MW-8D

contained two analytes that exceeded MCLs: benzene and vinyl chloride, with MCLs of 5

μg/l and 2 μg/l respectively.

S:\CONDATA\2000s\2049.02\originals\2008 Annual Report\Tables.xls Page 8 of 8 Sanborn, Head & Associates, Inc.
FIGURES
• MW-200 

$MW-5S 

APPROXIMATE GROUrWWATER MMAGEMEm ZmJE (GMZ) BOUrmARY 

RESIDE~HIAL WELL REMOVED FROM THE GROU~WWATER Mm~ITORI~~G PROGRAM AS DESCRIBED lfJ THE 

JUrJE 2006 REV1SED AMErmMErn rw. 2 TO THE STATEMErn OF WORK (SOW) 

MmJITORirJG WELL REMOVED FROM THE GROUrJDWATER MmJITORirJG PROGRAM MD DECOMMISSIDrJED 

DURirJG THE FALL 2007 AS DESCRIBED lrJ THE JUrJE 2006 REVISED AMErmMErn rw. 2 TO THE SOW 

MmJITORirJG WELL REMOVED FROM THE GROUrJDWATER MmJITORirJG PROGRAM Nm rWT DECOMMISSIDrJED 

$MW"-6D-2,4 AS DESCRIBED lrJ THE JUrJE 2006 REV1SED AMErmMErn rw. 2 TO THE SOW 

® MW-2R 

- -·· l \ \ ':". 

6-11 

6-6 ~_\/ - _1)..;,-

~ \ \ 

\ \-;o ; 

6-12 

;:~"o'>~ .... ,\. ~ l ' L ~ \~ 

<a v \ \ \ ,...,>., 

\ i-~~ ~n \ ::;\, ~~~

-- . . --- . :::::::::::::
100

1000

)

Figure 2

Concentration vs. Time Plot

MW-2D-6/MW-2R

Town Garage/Radio Beacon Site

Londonderry, New Hampshire

S:\CONDATA\2000s\2049.02\originals\2008 Annual Report\MonWellPlot.xls Page 1 of 1 

0.1

1

10

Jan-94 Jan-95 Jan-96 Jan-97 Jan-98 Jan-99 Jan-00 Jan-01 Jan-02 Jan-03 Jan-04 Jan-05 Jan-

Concentration (μg/l)

Sample Dates

1,1,1-TCA 1,1-DCA 1,1-DCE 1,1,1-TCA Cleanup Goal (200) 1,1-DCA Cleanup Goal (81) 1,1-DCE Cleanup G

Monitoring well MW-2D-6 was replaced by monitoring well MW-2R on October 30, 2006. Data points shown from January 1994 through December 2005 reflect samples collected from monitoring well MW-2D-6. Data points shown after January 2006 reflect samples collected from monitoring well MW-2R.
ATTACHMENT A 

GROUNDWATER QUALITY FIELD 

SAMPLING SUMMARY FORM 
Groundwater Quality Field Sampling Summary

d d i)

Comments

 Project Number: 2049.02 Date: November 6, 2008

 Project Name: Former Londonderry Town Garage

 Project Location: Londonderry, New Hampshire

 pH Meter: YSI 600 Project Manager: S. Nerney

 Conductivity Meter: YSI 600 Collector: M. Thomas

 Water Level Meter: MP-30 Weather: Rain, 40s

 Dissolved Oxygen: YSI 600

Field Measurements

 Sampling Location MW-2R

 Reference Point PVC

 Reference Point Elevation (feet) 355.69

 Depth to Floating Product (feet) -

 Depth to Water (feet) 3.50

 Water Table Elevation (feet) 352.19

 Depth to Bottom (feet) 48.5

 pH( d d i ) H (stan ar un ts 6 8.

 Specific Conductance (μS/cm) 11,740

 Temperature (oC) 14.2

 Dissolved Oxygen (mg/L) 1.0

 Date of Sample 6-Nov

 Sample Time 1140

 Comment Reference Number 1

1. Sample collected using low flow sampling techniques.

S:\CONDATA\2000s\2049.02\originals\2008 Annual Report\20081106 GwQFSS.xlsx Page 1 of 1 Sanborn, Head & Associates, Inc.
ATTACHMENT B 

ANALYTICAL LABORATORY 

DATA REPORT 
----~~~---------------------------e __ a_s_t_e __ r_n __ a_n __ a_l_yt __ i_c_a __ l__ _ II D 

Scott Nerney 

Sanborn, Head & Associates, Inc. (NH) 

20 Foundry Street 

Concord, NH 03301 

Subject: Laboratory Report 

Eastern Analytical, Inc. ID: 

·~ 1 ( 2C8 

74438 

Client Identification: 

Date Received: 

Londonderry Town Garage (LTG) /2049.01 -Nov. 2008 

11/6/2008 

Dear Mr. Nerney : 

Enclosed please find the laboratory report for the above identified project. All analyses were performed in 

accordance with our QNQC Program. Unless otherwise stated, holding times, preservation techniques, 

container types, and sample conditions adhered to EPA Protocol. Samples which were collected by Eastern 

Analytical, Inc. (EAI) were collected in accordance with approved EPA procedures. Eastern Analytical, Inc. (EAI} 

certifies that the enclosed test results meet all requirements of NELAP and other applicable state certifications. 

Please refer to our website at www.eailabs.com for a copy of our NELAP certificate and accredited parameters. 

The following standard abbreviations and conventions apply throughout all EAI reports: 

Solid samples are reported on a dry weight basis, unless otherwise noted 

<: "less than" followed by the detection limit 

TNR: Testing Not Requested 

NO: None Detected, no established detection limit 

RL: Reporting Limits 

%R: % Recovery 

Eastern Analytical Inc. maintains certification in the following states: Connecticut (PH-0492), Maine (NH005), 

Massachusetts (M-NH005), New Hampshire/NELAP (1012), Rhode Island (269) and Vermont {VT1012}. 

' 

\~'.'Ire\ 

This report package contains the following information: Sample Conditions summary, Analytical Results/Data and 

copies of the Chain of Custody. This report may not be reproduced except in full, without the the written approval 

of the laboratory. 

Analytical Deviation & QA/QC Documentation: 

Quality Control Samples associated with this project are included in this report. At a minimum, a Method Blank 

and Laboratory Control Sample (LCS) are reported. Matrix Spikes and Duplicates are reported where applicable. 

Deviations are narrated on the QC pages. 

If you have any questions regarding the results contained within, please feel free to directly contact me, or the 

chemist(s) who performed the testing in question. Unless otherwise requested, we will dispose of the sample{s) 

30 days from the sample receipt date. 

We appreciate this opportunity to be of service and look forward to your continued patronage. 

Sincerely, 

Lorraine Olashaw, Lab Director 

f .. r ·rn ,\n .lyllcal, In<·. ••• I, 'I www.eailabs.com 

7 

#of pages (excluding cover letter) 

1 f I I - _ ~ ·- \ r 
SAMPLE CONDITIONS PAGE 

Eastern Analytical, Inc. 10#: 74438 

Client: Sanborn, Head & Associates, Inc. (NH) Client Designation: Londonderry Tow n Garage (LTG) 12049.01 -

Nov. 2008 

Temperature upon receipt (°C): 1 Received on Ice or cold packs (Yes/No): y 

Date Date Sample % Dry 

Lab iD Sample ID Received Sampled Matrix Weight Exceptions/Comments (other than thermal preservation) 

74438.01 MW-2R 

74438.02 Trip Blank 

11/6/08 11/6/08 aqueous 

11/6/08 10/30/08 aqueous 

Adheres to Sample Acceptance Policy 

Adheres to Sample Acceptance Policy 

Samples were properly preserved and the pH measured when applicable unless otherwise noted. Analysis of solids for pH, Flashpoint, 

lgnitibility, Paint Filter, Corrosivity, Conductivity and Specific Gravity are reported on an "as received" basis. 

All results contained in this report relate only to the above listed samples. 

References include: 

1) EPA 600/4-79-020, 1983 

2) Standard Methods for Examination of Water and Wastewater : lnorganics, 19th Edition, 1995; Microbiology, 20th Edition, 1998 

3) Test Methods for Evaluating Solid Waste SW 846 3rd Edition including updates IVA and /VB 

4) Hach Water Analysis Handbook, 2nd edition, 1992 

eastern analytical, inc. www.eailabs.com Phone: (603) 228-0525 1 
LAB ORA TORY REPORT 

Eastern Analytical, Inc. 10#: 74438 

Client: Sanborn, Head & Associates , Inc. 

(NH) 

Sample ID: MW-2R 

Lab Sample ID: 74438.01 

Matrix: aqueous 

Date Sampled: 11/6/08 

Date Received: 11/6/08 

Units: ug/1 

Date of Analysis: 11/12/08 

Analyst: BAM 

Method: 8260B 

Dilution Factor: 

Dichlorodifluoromethane <5 

Chloromethane <2 

Vinyl chloride <2 

Bromomethane <2 

Chloroethane <5 

Trichlorofluoromethane <5 

Diethyl Ether <5 

Acetone < 10 

1, 1-Dichloroethene 9 

tert-Butyl Alcohol (TBA) < 30 

Methylene chloride <5 

Carbon disulfide <5 

Methyl-t-butyl ether(MTBE) <5 

Ethyl-t-butyl ether(ETBE) <5 

Isopropyl ether(DIPE) <5 

tert-amyl methyl ether(TAME) <5 

trans-1 ,2-Dichloroethene <2 

1, 1-Dichloroethane 17 

2,2-Dichloropropane <2 

cis-1 ,2-Dichloroethene <2 

2-Butanone(MEK) < 10 

Bromochloromethane <2 

Tetrahydrofuran(THF) < 10 

Chloroform <2 

1,1, 1-Trichloroethane <2 

Carbon tetrachloride <2 

1, 1-Dichloropropene <2 

Benzene < 1 

1 ,2-Dichloroethane <2 

Trichloroethene <2 

1 ,2-Dichloropropane <2 

Dibromomethane <2 

Bromodichloromethane < 0.5 

4-Methyl-2-pentanone(MIBK) <10 

cis-1 ,3-Dichloropropene <2 

Toluene <1 

trans-1 ,3-Dichloropropene <2 

1,1 ,2-Trichloroethane <2 

2-Hexanone < 10 

Tetrachloroethene <2 

1 ,3-Dichloropropane <2 

Dibromochloromethane <2 

1,2-Dibromoethane(EDB) <2 

Chlorobenzene <2 

1,1, 1 ,2-Tetrachloroethane <2 

Ethvlbenzene < 1 

eastern analytical, inc. 

Client Designation: Lond onderry Town Garage (LTG) 1 2049.01 -

Nov. 2008 

Trip Blank 

74438.02 

aqueous 

10/30/08 

11/6/08 

ug/l 

11/12/08 

BAM 

82608 

<5 

<2 

<2 

<2 

<5 

<5 

<5 

<10 

< 1 

< 30 

<5 

<5 

<5 

<5 

<5 

<5 

<2 

< 2 

<2 

<2 

< 10 

<2 

< 10 

<2 

<2 

<2 

<2 

< 1 

<2 

<2 

<2 

<2 

< 0.5 

< 10 

<2 

<1 

<2 

<2 

< 10 

<2 

<2 

<2 

<2 

<2 

<2 

< 1 

www.eailabs.com Phone: (603) 228-0525 2 
LABORATORY REPORT 

Eastern Analytical, Inc. 10#: 74438 

Client: Sanborn, Head & Associates, Inc. 

(NH} 

Sample 10: MW-2R 

Lab Sample 10: 74438.01 

Matrix: aqueous 

Date Sampled: 11/6/08 

Date Received: 11/6/08 

Units: ug/1 

Date of Analysis: 11/12/08 

Analyst: BAM 

Method: 8260B 

Dilution Factor: 1 

mp~Xyle e < 1 

o-Xylene < 1 

Styrene < 1 

Bromoform <2 

IsoPropyl benzene <1 

Bromobenzene <2 

1,1 ,2,2-Tetrachloroethane <2 

1 ,2,3-Trichloropropane <2 

n-Propylbenzene < 1 

2-Chlorotoluene <2 

4-Chlorotoluene <2 

1 ,3,5-Trimethylbenzene < 1 

tert-Butylbenzene < 1 

1 ,2,4-Trimethylbenzene < 1 

sec-Butylbenzene < 1 

1 ,3-Dichlorobenzene <1 

p-lsopropyltoluene < 1 

1 ,4-Dichlorobenzene <1 

1 ,2-Dichlorobenzene < 1 

n-Butylbenzene < 1 

1 ,2-Dibromo-3-chloropropane <2 

1 ,3,5-Trichlorobenzene < 1 

1 ,2,4-Trichlorobenzene < 1 

Hexachlorobutadiene < 0.5 

Naphthalene <5 

1 ,2,3-Trichlorobenzene <1 

4-Bromofluorobenzene (surr) 105 "'oR 

1 ,2-Dichlorobenzene-d4 (surr) 101 "'oR 

Toluene-dB (surr) 98 "'oR 

eastern analytical, inc. 

Client Designation: Londonderry Town Garage (l TG} 12049.01 -

Nov. 2008 

Trip Blank 

74438.02 

aqueous 

10/30/08 

11/6/08 

ug/1 

11/12/08 

BAM 

8260B 

< 1 

< 1 

< 1 

<2 

< 1 

<2 

<2 

<2 

< 1 

<2 

<2 

< 1 

< 1 

< 1 

< 1 

< 1 

< 1 

<1 

< 1 

< 1 

<2 

< 1 

< 1 

< 0.5 

<5 

< 1 

103 "'oR 

101 "'oR 

97 "'oR 

www.eailabs.com Phone: (603) 228-0525 3 
IA.ilAI LAB ORA TORY REPORT 

Eastern Analytical, Inc. 10#:74438 Batch ID: 

Client: Sa nbor n, Head & Associates, Inc. Client Designation: Londonderry T ow n Garage (LTG) 

QC Report 2049.01 - Nov . 2008 

Date of Analysis 

Parameter Name Blan k LCS LCS Dup Units Method --- -

Dichlorodiftuoromethane <5 ug/1 11/11/08 82608 

Chloromethane <2 ug/1 11/11/08 82608 

Vinyl chloride <2 ug/1 11/11/08 82608 

Bromomethane <2 ug/1 11/11/08 82608 

Chloroethane <5 ug/1 11/11/08 82608 

Trichlorofluoromethane <5 ug/1 11/11/08 82608 

Diethyl Ether <5 ug/1 11/11/08 82608 

Acetone <10 ug/1 11/11/08 82608 

1,1-Dichloroethene <1 20 {100 %R) 21 {106 %R) {6 RPD) ug/1 11/11/08 82608 

tert-Butyl Alcohol {T8A) < 30 ug/1 11/11/08 82608 

Methylene chloride <5 ug/1 11/11/08 82608 

Carbon disulfide <5 ug/1 11/11/08 82608 

Methyl-t-butyl ether{MTBE) <5 ug/1 11/1 1/08 82608 

Ethyl-1-butyl ether{ETBE) <5 ug/1 11/11/08 82608 

Isopropyl ether(DIPE) <5 ug/1 11/11/08 82608 

tert-amyl methyl ether{TAME) <5 ug/1 11/11108 82608 

trans-1,2-Dichloroethene <2 ug/1 11/11/08 82608 

1 ,1-Dichloroethane <2 ug/1 11/11/08 82608 

2,2-Dichloropropane <2 ug/1 11/11/08 82608 

cis-1,2-Dichloroethene <2 ug/1 11/11/08 82608 

2-Butanone(MEK) < 10 ug/1 11/11/08 82608 

Bromochloromethane <2 ug/1 11/11/08 82608 

Tetrahydrofuran(THF) < 10 ug/1 11/11/08 82608 

Chloroform <2 ug/1 11/11/08 82608 

1 ,1,1-Trichloroethane <2 ug/1 11/11/08 82608 

Carbon tetrachloride <2 ug/1 11/11/08 82608 

1,1-Dichloropropene <2 ug/1 11/11/08 82608 

Benzene < 1 21 (104 %R) 21 {107 %R) {3 RPD) ug/1 11/11/08 82608 

1,2-Dichloroethane <2 ug/1 11/11/08 82608 

T richloroethene <2 24 (118 %R) 24 (121 %R) (3 RPD) ug/1 11/11/08 82608 

1,2-Dichloropropane <2 ug/1 11/11/08 82608 

Dibromomethane <2 ug/1 11111/08 82608 

Bromodichloromethane < 0.5 ug/1 11111/08 82608 

4-Methyl-2-pentanone(MIBK) < 10 ug/1 11/11/08 82608 

cis-1,3-Dichloropropene <2 ug/1 11/11/08 82608 

Toluene <1 20 (100 %R) 21 (103 %R) (3 RPD) ug/1 11/11/08 82608 

trans-1 ,3-Dichloropropene <2 ug/1 11/11/08 82608 

1,1 ,2-Trichloroethane <2 ug/1 11/11/08 82608 

2-Hexanone < 10 ug/1 11/11/08 82608 

T etrachloroethene <2 ug/1 11/11/08 82608 

1,3-Dichloropropane <2 ug/1 11/11/08 82608 

Dibromochlorometha ne <2 ug/1 11/11/08 82608 

1,2-Dibromoethane(EDB) <2 ug/1 11/11/08 82608 

Chlorobenzene <2 22 (108 %R) 22 (108 %R) {0 RPD) ug/1 11/11/08 82608 

eastern analytical, inc. www.eailabs.com Phone: {603) 228-0525 4 
l!lilAI LABORATORY REPORT 

Eastern Analytical, Inc. 10#:74438 Batch 10: 

Client: Sanborn, Head & Associates, Inc. Client Designation: Lo nd o nderry Town Garage (LTG) 

QC Report 2049.01 - Nov. 2008 

Date of Analysis 

Parameter Name Blank LCS LCS Dup Units Method 

1,1, 1 ,2-Tetrachloroethane <2 ug/1 11/11/08 82608 

Ethyl benzene < 1 ug/1 11/11/08 82608 

mp-Xylene <1 ug/1 11/11/08 82608 

a-Xylene < 1 ug/1 11/11108 82608 

Styrene < 1 ug/1 11/11/08 82608 

Bromoform <2 ug/1 11/11/08 82608 

lsoPropylbenzene < 1 ugll 11/11/08 82608 

8romobenzene <2 ug/1 11/11108 82608 

1,1 ,2 ,2-Tetrachloroethane <2 ug/1 11/11/08 82608 

1 ,2,3-Trichloropropane <2 ug/1 11/11/08 82608 

n-Propylbenzene < 1 ug/1 11/11/08 82608 

2-Chlorotoluene <2 ug/1 11/11/08 82608 

4-Chlorotoluene <2 ug/1 11/11/08 82608 

1 ,3,5-Trimethylbenzene < 1 ug/1 11/11/08 82608 

tert-8utylbenzene < 1 ug/1 11/11/08 82608 

1 ,2,4-Trimethylbenzene < 1 ug/1 11/11108 82608 

sec-8utylbenzene <1 ug/1 11/11/08 82608 

1 ,3-Dichlorobenzene <1 ug/1 11/11/08 82608 

p-lsopropyltoluene < 1 ug/1 11/11/08 82608 

1 ,4-Dichlorobenzene < 1 ug/1 11/11/08 82608 

1 ,2-Dichlorobenzene < 1 ugfl 11/11/08 82608 

n-8utylbenzene < 1 ugfl 11/11/08 82608 

1 ,2-Dibromo-3-chloropropane <2 ugfl 11111/08 82608 

1,3,5-Trichlorobenzene < 1 ug/1 11/11/08 82608 

1,2,4-Trichlorobenzene < 1 ugfl 11/11/08 82608 

Hexachlorobutadiene < 0.5 ug/1 11/11/08 82608 

Naphthalene <5 ug/1 11/11/08 82608 

1 ,2,3-Trichlorobenzene < 1 ug/1 11/11/08 82608 

4-8romofluorobenzene {surr) 103 %R 110 %R 108 %R % Rec 11/11/08 82608 

1,2-Dichlorobenzene-d4 (surr) 103 %R 101 %R 100 %R % Rec 11/11/08 82608 

Toluene-dB (surr) 98%R 98%R 99%R % Rec 11/11/08 82608 

eastern analytical, inc. www.eailabs.com Phone: (603) 228-0525 5 
LABORATORY REPORT 

Eastern Analytical, Inc. 10#:74438 Batch ID: 

Client: Sanborn, Head & Associates, Inc. (NH) Client Designation: Londonderry Town Garage (LTG) 1 2049.01 

-Nov. 2008 

--- ----- ----------

Volatile Organic Compounds QC limits and Narrative Summary 

Matrix: 

Units: 

EPA Method 

Surrogate Recovery 

4-Bromofluorobenzene 

1 ,2-Dichlorobenzene-04 

Toluene-dB 

Matrix Spike Recovery 

1, 1-Dichloroethene 

Trichloroethene 

Benzene 

Toluene 

Chlorobenzene 

Samples were extracted and analyzed within holding time limits. 

Solid 

% 

82608 

74-121 

80-120 

70-130 

59-172 

62-137 

66-142 

59-139 

60-133 

Instrumentation was calibrated in accordance with the method requirements. 

The method blanks were free of contamination at the reporting limits. 

Sample surrogate recoveries met the above stated criteria. 

RPD 

% 

30 

30 

30 

30 

30 

The associated matrix spikes and/or Laboratory Control Samples met acceptance criteria. 

There were no exceptions in the analyses, unless noted. 

eastern analytical, inc. www.eailabs.com 

Aqueous 

% 

82608 

86-115 

80-120 

70-130 

61-145 

71-120 

76-127 

76-125 

75-130 

RPD 

20 

20 

20 

20 

20 

% 

Phone: (603) 228-0525 6 
Page Lot f' 

SAMPLE 1.0. 

SAMPLING 

DATE / TIME 

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