2010 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 

August 2010
August 25, 2010

File No. 2049.02

Sherilyn B. Young, Esq.

Rath, Young and Pignatelli, P.A.

P.O. Box 1500

Concord, NH 03302-1500

Re: 2010 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) 

completed a groundwater quality monitoring round at the Town Garage/Radio Beacon Site (site)

in May 2010. In addition to the annual monitoring activities (collection of a Volatile Organic 

Compound [VOC] groundwater sample at monitoring well MW-2R), the United States 

Environmental Protection Agency (USEPA) also requested that additional groundwater and 

surface water monitoring be completed at the site. The monitoring was completed in accordance 

with SHA’s December 2009 Quality Assurance Project Plan (QAPP).1 This report is subject to 

the limitations in Attachment A.

GROUNDWATER SAMPLING AND ANALYSIS

One groundwater sample was collected from monitoring well MW-2R2

1 SHA, December 2, 2009, Quality Assurance Project Plan and Work Plan for Groundwater and Surface Water 

Monitoring, Town Garage/Radio Beacon Site, Londonderry, New Hampshire, NHDES Site No. 198509001. The 

QAPP was initially submitted to USEPA in August 2009. The QAPP was subsequently revised in December 

2009 based on comments by USEPA, and was approved on April 5, 2010.

on May 19, 2010 (refer 

to Figure 1 for the Monitoring Well Location Plan). Prior to purging/sampling monitoring well 

MW-2R, the groundwater level in the well was measured with an electric water level meter. The 

groundwater sample from monitoring well MW-2R was collected using a portable submersible 

bladder pump. Low-flow sampling techniques were used, as described in SHA’s December 2009 

QAPP. Water quality parameters including temperature, pH, specific conductance, oxygen 

reduction potential (ORP), and dissolved oxygen were monitored during purging using an YSI 

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

monitored via a sampling port installed prior to the flow cell using a Hach 2100P turbidity meter.

Upon parameter stabilization, the in-line flow cell was disconnected and primary and duplicate 

2 Replacement monitoring well MW-2R was installed October 30, 2006 as a replacement to monitoring well MW2D-6. The well installation was summarized in the site’s 2006 Annual Summary Report dated January 31, 2006. 
Town Garage/Radio Beacon Site / 2010 Annual Report

2049.02 \ 2010825_ 2010_Annual_Report.docx

Page 2

groundwater samples were collected. A summary of stabilized water quality parameter data for 

the May 2010 round is presented on the Groundwater Quality Field Sampling Summary form 

included as Attachment B. Historical water quality parameter data are summarized in Table 1. 

The groundwater samples were 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 a cooler packed with ice and 

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

certified laboratory, via laboratory courier for volatile organic compound (VOC) analysis by 

USEPA Method 8260B. The sample was handled and transported following standard chain-ofcustody 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 as Attachment C. SHA performed an assessment of data quality and usability 

as described in SHA’s December 2009 QAPP (refer to Attachment D).

As indicated above, in addition to the analysis of VOCs at MW-2R, additional groundwater and 

surface water samples were collected and analyzed in May 2010. These additional analyses 

consisted of the following:

x Analysis of a groundwater sample from MW-2R for 1,4-dioxane and arsenic (unfiltered).

x Analysis of surface water samples from two surface water locations (SW-1 and SW-2) 

sampled in 1990 as part of the Remedial Investigation (RI).3

x Analysis of a surface water reference sample collected from a ponded surface water area near 

Thornton Road (approximately 1⁄2-half mile south of the site). The May 2010 Thornton Road 

reference sample was also analyzed for aluminum, iron, lead, nickel, and zinc. 

The May 2010 samples 

collected from SW-1 and SW-2 were analyzed for metals (aluminum, iron, lead, nickel, and 

zinc) that had exceeded the ambient water quality criteria based on the prior RI sampling. 

The additional groundwater and surface water sampling was a single monitoring event completed 

at the request of USEPA. Results of the additional groundwater and surface water monitoring are 

included in Attachment E.

SUMMARY OF ANALYTICAL RESULTS 

As indicated above, SHA performed an assessment of data quality and usability (Attachment D). 

Based on this assessment, the data are of sufficient quality for their intended purpose (i.e., 

comparison to applicable groundwater standards4

).

3 Metcalf & Eddy, March 1992, Final Technical Report of Field Investigation.

4 The applicable groundwater standards for the site are the New Hampshire Department of Hampshire 

Environmental Services (NHDES) Ambient Groundwater Quality Standards (AGQS; which are based on federal 

Maximum Contaminant Levels [MCLs]) and the NHDES Contaminated Sites Risk Characterization and 

Management Policy (RCMP) GW-1 Groundwater Standards.
Town Garage/Radio Beacon Site / 2010 Annual Report

2049.02 \ 2010825_ 2010_Annual_Report.docx

Page 3

The May 2010 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 primary and duplicate samples from MW-2R. The concentration of 1,1-DCA (11 

micrograms per liter [μg/l] in both the primary and duplicate sample) was below its groundwater 

cleanup level (81 μg/l), while the concentration of 1,1-DCE was equal to the groundwater 

cleanup level (7 μg/l) in both the primary and duplicate sample.5 The concentrations of the 

VOCs observed for the May 2010 round are lower than the results for the four 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 these monitoring locations.

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 May 2010 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, with concentrations of 1,1-DCE detected at a concentration equal to 

its cleanup level, the lowest concentration recorded since monitoring at this location began in 

1994.

Historically, groundwater sampling has been completed in November (since 1996), based on 

requirements of the site’s GMP6

. Because of the timing of the recent sampling round in May 

2010, these data served in part as an evaluation of seasonality in groundwater conditions. Based 

on the results of the May 2010 sampling, we propose that the next groundwater sampling event 

be completed in November 2011.

Furthermore, as indicated by the results of the May 2010 additional groundwater and surface 

water monitoring (Attachment E), the concentrations of 1,4-dioxane and unfiltered arsenic were 

less than the respective laboratory reporting limits (1 microgram per liter [μg/l]) in both the 

primary and duplicate samples from MW-2R and with the exception of iron at surface water 

location SW-2 (which exceeded the applicable surface water standards7

5 VOC concentrations in the primary and duplicate samples from MW-2R were equivalent. 

), there were no 

exceedances of the applicable water quality standards for the analytes of interest in sampling 

requested by USEPA. We note that the elevated iron concentration in surface water at the SW-2

location is potentially related to surface runoff from the Town Garage facility. Based on the

results of May 2010 sampling, we do not believe that additional sampling and analysis of 

6 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.

7 The applicable surface water standards are the Water Quality Criteria (WQC) as defined in NHDES Env-Wq 

1703.21.
Sanborn, 

Head 

and 

Associat

es, Inc.

Digitally signed by 

Sanborn, Head and 

Associates, Inc. 

DN: cn=Sanborn, 

Head and 

Associates, Inc., 

o=SHA, ou, 

email=lsmith@sanb

ornhead.com, c=US 

Date: 2010.08.30 

15:23:16 -04'00'
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FIGURES 
TAX MAP 9

TAX MAP 6

TOWN GARAGE

PROPERTY

File:Q:\CONCORD\2049.02\dwg\July 2010 Annual Summary\2049_02-Figs.dwg Plot Date: 8-26-10

Legend

APPROXIMATE GROUNDWATER MANAGEMENT ZONE (GMZ) BOUNDARYAPPROXIMATE PROPERTY BOUNDARYAPPROXIMATE TAX MAP BOUNDARY

TAX MAP LOT NUMBER

REPLACEMENT SHALLOW BEDROCK MONITORING WELL LOCATION ANDDESIGNATION INCLUDED IN THE GROUNDWATER MONITORING PROGRAM

AS DESCRIBED IN THE JUNE 2006 REVISED AMENDMENT NO. 2 TO THE SOWAS DESCRIBED IN THE JUNE 2006 REVISED AMENDMENT NO. 2 TO THE

SOW, THE MONITORING WELL WAS REMOVED FROM THE GROUNDWATER

MONITORING PROGRAM AND NOT DECOMMISSIONED
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ATTACHMENT A

LIMITATIONS 

 
Town Garage/Radio Beacon Site / Attachment A 

2049.02 \ ATT A.docx 

August 25, 2010 

Page 1 

ATTACHMENT A 

LIMITATIONS

1. The conclusions and recommendations described in this letter report are based in part on the 

data obtained from a limited number of groundwater and surface water samples from widely 

spaced explorations. The nature and extent of variations between these explorations may not 

become evident until further investigation, or remediation, is initiated. If variations or other 

latent conditions then appear evident, it will be necessary to re-evaluate the conclusions and 

recommendations of this letter report. 

2. Should additional chemical data, historical information, or hydrogeologic information 

become available in the future, such information should be reviewed by SHA and the 

interpretations, conclusions and recommendations presented herein should be modified 

accordingly. 

3. In preparing this letter report, SHA has relied on certain information provided by other 

parties referenced herein, and on information contained in the files of state and local agencies 

available at the time of the study. Although there may have been some degree of overlap in 

the information provided by these various sources, we did not attempt to independently 

verify the accuracy or completeness of all information reviewed or received during the 

course of this study. 

4. Water level measurements have been made in the monitoring well and surface water 

sampling locations at times and under conditions stated within the text of the letter report. 

Note that fluctuations in the level of the groundwater or surface water may occur due to 

variations in rainfall and other factors not evident at the time measurements were made. 

5. Quantitative laboratory analyses were performed as part of the investigation as noted within 

the letter report. The analyses were performed for specific parameters that were selected 

during the course of this study. It must be noted that additional compounds not searched for 

during the current study may be present in indoor air, soil, groundwater, surface water, and/or 

sediment at the site. Moreover, it should be noted that variations in the types and 

concentrations of contaminants and variations in their distributions within groundwater and 

surface water may occur due to the passage of time, seasonal water table fluctuations, 

recharge events, and other factors. 

6. The conclusions and recommendations contained in this letter report are based in part on 

various types of chemical data as well as historical and hydrogeologic information developed 

by previous investigators. While SHA has reviewed that data and information as stated in 

this letter report, any of SHA’s interpretations, conclusions, and recommendations that have 

relied on that information will be contingent on its validity. 

7. The analyses and recommendations contained in this letter report are based on the data 

obtained from the referenced subsurface explorations/sampling locations. The 

explorations/sampling locations indicate conditions only at the specific locations and times, 
Town Garage/Radio Beacon Site / Attachment A 

2049.02 \ ATT A.docx 

August 25, 2010 

Page 2 

and only to the depths penetrated. They do not necessarily reflect variations that may exist 

between such locations. The validity of the recommendations is based in part on assumptions 

SHA has made about conditions at the site. Such assumptions may be confirmed only during 

additional characterization, or remediation. If subsurface conditions different from those 

described become evident, the recommendations in this letter report must be re-evaluated. 

8. This letter report has been prepared for the exclusive use of the Town of Londonderry, New 

Hampshire for specific application for environmental conditions related to the Town 

Garage/Radio Beacon Site located in Londonderry, New Hampshire in accordance with 

generally-accepted hydrogeologic and environmental practices. No warranty, express or 

implied, is made. 

S:\CONDATA\2000s\2049.02\originals\2010 Annual Report\ATT A.docx 
ATTACHMENT B 

GROUNDWATER QUALITY FIELD 

SAMPLING SUMMARY FORM 
*URXQGZDWHU4XDOLW\)LHOG6DPSOLQJ6XPPDU\

S:\CONDATA\2000s\2049.02\originals\2010 Annual Report\20100519 GwQFSS.xlsx Page 1 of 1 Sanborn, Head & Associates, Inc.

 Date:

)LHOG0HDVXUHPHQWV

 Sampling Location MW-2R

 Reference Point TPVC

 Reference Point Elevation (feet) 355.69

 Depth to Water (feet) 2.64

 Water Table Elevation (feet) 353.05

 Depth to Bottom (feet) 48.5

 pH (standard units) 7.0

 Specific Conductance (μS/cm) 12,200

 Temperature (oC) 12.8

 Dissolved Oxygen (mg/L) 0.9

 Oxidation Reduction Potential (mv) 149

 Date of Sample 19-May

 Sample Time 1330

 Comment Reference Number 1,2,3,4,5

&RPPHQWV

 pH Meter: YSI 600

 Conductivity Meter: YSI 600

 Water Level Meter: Slope Indicator

 Other: Hach 2100P Turbidimeter

 Weather: Light rain, breezy, 50s oF

 Project Manager: S. Nerney

 Collector(s): S. Nerney, T. White

 Project Number: 2049.02

 Project Name: Londonderry Town Garage Superfund Site

 Project Location: Londonderry, New Hampshire

May 19, 2010

1. Field duplicate (labeled "Dup-2/05-19-10") collected from location MW-2R.

2. Groundwater monitoring was completed in accordance with SHA’s December 2009 Quality Assurance Project Plan

(QAPP).

3. MW-2R was purged using a 3/4-inch diameter bladder pump at flow rates approximately 40 ml/min. The intake of the

bladder pump was set at approximately 37 ft below ground surface [bgs], which corresponded to the mid-screen depth. The

flow cell volume was approximately 200 ml.

4. Field screening parameters were generally monitored approximately every five minutes during purging. After the field

parameters stabilized, primary and duplicate groundwater samples were collected. Indicated field parameters were the last

stabilized values recorded prior to sample collection.

5. Groundwater samples were analyzed for VOCs, 1,4-dioxane, and arsenic (unfiltered).
ATTACHMENT C 

ANALYTICAL LABORATORY 

DATA REPORT 
1/\ 11 I eastern analytical, inc. --~,JVLAJ~----------------~~~~~---­ pru!cs\iona' l '· ' .. , {c1·vrcL r 

Scott Nerney 

Sanborn, Head & Associates, Inc. (NH) 

20 Foundry Street 

Concord , NH 03301 

Subject: Laboratory Report 

Eastern Analytical, Inc. ID: 

RECEIVED 

JUN 02 2010 

SHA - Concord 

89365 

Client Identification: 

Date Received: 

Londonderry Town Garage (LTG) 12049.02 

5/20/2010 

Dear Mr. Nerney : 

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

accordance with our QA/QC 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. 

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 to all EAI reports: 

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

< : "less than" followed by the reporting limit 

> : "greater than" followed by the reporting limit 

%R : % Recovery 

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

Massachusetts (M-NH005), New Hampshire/NELAP (101 2), Rhode Island (269) and Vermont (VT1012). 

The following information is contained within this report: Sample Conditions summary, Analytical 

Results/Data, Quality Control data (if requested) and copies of the Chain of Custody. This report may not be 

reproduced except in full, without the the written approval of the laboratory. 

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, 

~ (_p 

Lorraine Olashaw, Lab Director Date #of pages (excluding cover letter) 

Eastern Analytical, Inc. 2~ Clwndl P ,, ~. Cnn<..•lrd. I\ II 0\ll'l www.cailabs.com lf.l 1101Wl05Z; l-'·0021i7052i FAXIlC)2Z~W)I 
SAMPLE CONDITIONS PAGE 

Eastern Analytical, Inc. 10#: 89365 

Client: Sanborn, Head & Associates, Inc. (NH) Client Designation: LTG I 2049.02 

Temperature upon receipt (

0

C}: 2.4 Received on ice or cold packs (Yes/No): y 

Date Date Sample% Dry 

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

89365.01 MW-2R /05-19-10 5/20/10 5/19/10 aqueous Adheres to Sample Acceptance Policy 

89365.02 TB-01 / 05-19-10 5/20/10 4/29/10 aqueous Adheres to Sample Acceptance Policy 

89365.03 Dup-2 / 05-19- 10 5/20/10 5/19/10 aqueous 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 
LABORATORY REPORT 

Eastern Analytical, Inc. 10#: 89365 

Client: Sanborn, Head & Associates, Inc. Client Designation: LTG I 2049.02 

(NH) 

Sample ID: MW-2R I 05-19-1 0 TB-01 I Dup-21 

05-19-10 05-19-10 

Lab Sample ID: 89365.01 89365.02 89365.03 

Matrix: aqueous aqueous aqueous 

Date Sampled: 5/19/10 4/29/10 5119/10 

Date Received: 5/20/10 5/20110 5/20110 

Units: ug/1 ug/1 ug/1 

Date of Analysis: 5/24/10 5/24/10 5/24/10 

Analyst: BAM BAM BAM 

Method: 8260B 8260B 82608 

Dilution Factor: 

Dichlorodifluoromethane <5 <5 <5 

Chloromethane <2 <2 <2 

Vinyl chloride <2 <2 <2 

Bromomethane <2 <2 <2 

Chloroethane <5 <5 <5 

Trichlorofluoromethane <5 <5 <5 

Diethyl Ether <5 <5 <5 

Acetone <10 < 10 <10 

1, 1-Dichloroethene 7 < 1 7 

tert-Butyl Alcohol (TBA) < 30 < 30 < 30 

Methylene chloride <5 <5 <5 

Carbon disulfide <5 <5 <5 

Methyl-t-butyl ether(MTBE) <5 <5 <5 

Ethyl-t-butyl ether(ETBE) <5 <5 <5 

Isopropyl ether(DIPE) <5 <5 <5 

tert-amyl methyl ether(TAME) <5 <5 <5 

trans-1,2-Dichloroethene <2 <2 <2 

1 , 1-Dichloroethane 11 <2 11 

2 ,2-Dichloropropane <2 <2 <2 

cis-1 ,2-Dichloroethene <2 <2 <2 

2-Butanone(MEK) < 10 < 10 < 10 

Bromochloromethane <2 <2 <2 

Tetrahydrofuran(THF) < 10 < 10 < 10 

Chloroform <2 <2 <2 

1, 1,1-Trichloroethane <2 <2 <2 

Carbon tetrachloride <2 <2 <2 

1, 1-Dichloropropene <2 <2 <2 

Benzene < 1 < 1 < 1 

1,2-Dichloroethane <2 <2 <2 

Trichloroethene <2 <2 <2 

1 ,2-Dichloropropane <2 <2 <2 

Dibromomethane <2 <2 <2 

Bromodichloromethane < 0.5 < 0.5 < 0.5 

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

cis-1 ,3-Dichloropropene <2 <2 <2 

Toluene < 1 < 1 < 1 

trans-1 ,3-Dichloropropene <2 <2 <2 

1,1 ,2-Trichloroethane <2 <2 <2 

2-Hexanone <10 < 10 < 10 

Tetrachloroethene <2 <2 <2 

1,3-Dichloropropane <2 <2 <2 

Dibromochloromethane <2 <2 <2 

1 ,2-Dibromoethane(EDB) <2 <2 <2 

Chlorobenzene <2 <2 <2 

1,1, 1,2-Tetrachloroethane <2 <2 <2 

Ethvlbenzene < 1 < 1 < 1 

eastern analytical, inc. www.eailabs.com Phone: (603) 228-0525 2 
1~1 LABORATORY REPORT 

Eastern Analytical, Inc. 10#: 89365 

Client: Sanborn, Head & Associates, Inc. 

(NH) 

Client Designation: LTG I 2049.02 

Sample ID: MW-2R I 05-19-10 TB-01 I Dup-2 I 

05-19-10 05-19-10 

Lab Sample ID: 89365.01 89365.02 89365.03 

Matrix: aqueous aqueous aqueous 

Date Sampled: 5119110 4129110 5119110 

Date Received: 5120110 5120110 5120110 

Units: ugll ugll ug/1 

Date of Analysis: 5124110 5124110 5124110 

Analyst: BAM BAM BAM 

Method: 8260B 8260B 8260B 

Dilution Factor: 1 1 

mp~Xylene < 1 < 1 < 1 

a-Xylene < 1 < 1 < 1 

Styrene < 1 < 1 < 1 

Bromoform <2 <2 <2 

lsoPropylbenzene < 1 <1 < 1 

Bromobenzene <2 <2 <2 

1,1 ,2,2-Tetrachloroethane <2 <2 <2 

1 ,2,3-Trichloropropane <2 <2 <2 

n-Propylbenzene < 1 < 1 < 1 

2-Chlorotoluene <2 <2 <2 

4-Chlorotoluene <2 <2 <2 

1 ,3,5-Trimethylbenzene < 1 < 1 < 1 

tert-Butylbenzene < 1 < 1 < 1 

1 ,2,4-Trimethylbenzene < 1 < 1 < 1 

sec-Butylbenzene < 1 < 1 < 1 

1 ,3-Dichlorobenzene < 1 < 1 < 1 

p-lsopropyltoluene <1 < 1 < 1 

1 ,4-Dichlorobenzene < 1 < 1 < 1 

1 ,2-Dichlorobenzene <1 < 1 < 1 

n-Butylbenzene < 1 < 1 <1 

1 ,2-Dibromo-3-chloropropane <2 <2 <2 

1 ,3,5-Trichlorobenzene < 1 < 1 < 1 

1 ,2,4-Trichlorobenzene < 1 < 1 < 1 

Hexachlorobutadiene < 0.5 < 0.5 < 0.5 

Naphthalene <5 <5 <5 

1 ,2,3-Trichlorobenzene < 1 < 1 < 1 

4-Bromofluorobenzene (surr) 90%R 90%R 89 %R 

1 ,2-Dichlorobenzene-d4 (surr) 109 %R 108 %R 109 %R 

Toluene-dB (surr) 98%R 93 %R 96%R 

eastern analytical, inc. www. eailabs. com Phone: (603) 228-0525 3 
lft_A_nl QC REPORT 

Eastern Analytical, Inc. ID#: 89365 

Client: Sanborn, Head & Associates, Inc. Client Designation: LTG I 2049.02 

Parameter Name Blank LCS LCSD Analysis Date Units Umits RPD Method 

Dichlorodifluoromethane <5 5/24/2010 ug/1 82608 

Chloromethane <2 5/24/2010 ug/1 82608 

Vinyl chloride <2 5/24/2010 ug/1 82608 

Bromomethane <2 5/24/2010 ug/1 82608 

Chloroethane <5 5/24/2010 ug/1 82608 

Trichlorofluoromethane <5 5/24/2010 ug/1 82608 

Diethyl Ether <5 5/24/2010 ug/1 82608 

Acetone < 10 5/24/2010 ug/1 82608 

1, 1-Dichloroethene < 1 21 (107 %R) 21 (106 %R) (1 RPD) 5/24/2010 ug/1 61 - 145 20 82608 

tert-8utyl Alcohol (TBA) < 30 5/24/2010 ug/1 82608 

Methylene chloride <5 5/24/2010 ug/1 82608 

Carbon disulfide <5 5/24/2010 ug/1 82608 

Methyl-t-butyl ether(MTBE) <5 5/24/2010 ug/1 82608 

Ethyl-t-butyl ether(ET8E) <5 5/24/2010 ug/1 82608 

Isopropyl ether(DIPE) <5 5/24/2010 ug/1 82608 

tert-amyl methyl ether(T AME) <5 5/24/2010 ug/1 82608 

trans-1 ,2-Dichloroethene <2 5/24/2010 ug/1 82608 

1 , 1-Dichloroetha ne <2 5/24/2010 ug/1 82608 

2,2-Dichloropropane <2 5/24/2010 ug/1 82608 

cis-1 ,2-Dichloroethene <2 5/24/2010 ug/1 82608 

2-8utanone(MEK) <10 5/24/2010 ug/1 82608 

Bromochloromethane <2 5/24/2010 ug/1 82608 

Tetrahydrofuran(THF) <10 5/24/2010 ug/1 82608 

Chloroform <2 5/24/2010 ug/1 82608 

1,1, 1-Trichloroethane <2 5/24/2010 ug/1 82608 

Carbon tetrachloride <2 5/24/2010 ug/1 82608 

1, 1-Dichloropropene <2 5/24/2010 ug/1 82608 

Benzene < 1 21 (103 %R) 21 (104%R)(1 RPD) 5/24/2010 ug/1 76- 127 20 82608 

1 ,2-Dichloroethane <2 5/24/2010 ug/1 82608 

Trichloroethene <2 19 (96 %R) 19 (96 %R) (0 RPD) 5/24/2010 ug/1 71 - 120 20 82608 

1 ,2-Dichloropropane <2 5/24/2010 ug/1 82608 

Dibromomethane <2 5/24/2010 ug/1 82608 

B romod ich loromethane < 0.5 5/24/2010 ug/1 82608 

4-Methyl-2-pentanone(MIBK) < 10 5/24/2010 ug/1 82608 

cis-1 ,3-Dichloropropene <2 5/24/2010 ug/1 82608 

Toluene < 1 20 (102 %R) 21 (1 05 %R) (3 RPD) 5/24/2010 ug/1 76- 125 20 82608 

trans-1 ,3-Dichloropropene <2 5/24/2010 ug/1 82608 

1,1 ,2-Trichloroethane <2 5/24/2010 ug/1 82608 

2-Hexanone <10 5/24/2010 ug/1 82608 

T etrach loroethene <2 5/24/2010 ug/1 82608 

1 ,3-Dichloropropane <2 5/24/2010 ug/1 82608 

Dibromochloromethane <2 5/24/2010 ug/1 82608 

1 ,2-Dibromoethane(ED8) <2 5/24/2010 ug/1 82608 

Chlorobenzene <2 20 (99 %R) 20 (101 %R) (2 RPD) 5/24/2010 ug/1 75 - 130 20 82608 

1.1.1 .2-Tetrachloroethane <2 5/24/2010 UQ/1 82608 

eastern analytical, inc. www.eailabs.com Phone: (603) 228-0525 4 
llVlAI QC REPORT 

Eastern Analytical, Inc. ID#: 89365 

Client: Sanborn, Head & Associates, Inc. Client Designation: LTG I 2049.02 

Parameter Name Blank LCS LCSD Analysis Date Units 

Ethyl benzene < 1 

mp-Xylene < 1 

o-Xylene < 1 

Styrene < 1 

Bromoform <2 

I soP ropylbenze n e < 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) 90%R 98%R 100 %R 

1,2-Dichlorobenzene-d4 (surr) 108 %R 101 %R 101 %R 

Toluene-d8 (surr) 98 %R 99%R 

Samples were extracted and analyzed within holding time limits. 

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. 

99%R 

5/24/2010 

5/24/2010 

5/24/2010 

5/24/2010 

5/24/2010 

5/24/2010 

5/24/2010 

5/24/2010 

5/24/2010 

5/24/2010 

5/24/2010 

5/24/2010 

5/24/2010 

5/24/2010 

5/24/2010 

5/24/2010 

5/24/2010 

5/24/2010 

5/24/2010 

5/24/2010 

5/24/2010 

5/24/2010 

5/24/2010 

5/24/2010 

5/24/2010 

5/24/2010 

5/24/2010 

5/24/2010 

5/24/2010 

5/24/2010 

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

There were no exceptions in the analyses, unless noted. 

• Flagged analyte recoveries deviated from the QAJQC limits. 

ug/1 

ug/1 

ug/1 

ug/1 

ug/1 

ug/1 

ug/1 

ug/1 

ug/1 

ug/1 

ug/1 

ug/1 

ug/1 

ug/1 

ug/1 

ug/1 

ug/1 

ug/1 

ug/1 

ug/1 

ug/1 

ug/1 

ug/1 

ug/1 

ug/1 

ug/1 

ug/1 

% Rec 

% Rec 

% Rec 

Limits RPD 

86- 115 50 

80- 120 50 

70- 130 50 

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

Method 

82608 

82608 

82608 

82608 

82608 

82608 

82608 

82608 

82608 

82608 

82608 

82608 

82608 

82608 

82608 

82608 

82608 

82608 

82608 

82608 

82608 

82608 

82608 

82608 

82608 

82608 

82608 

82608 

82608 

82608 

5 
CHAIN-OF-CUSTODY RECORD 

Page I of { 

BoLD FIELDS REQUIRED. PLEASE CIRCLE REQUESTED ANALYsts. 

SAMPLING 

DATE/TIME I "' I ~I X:l - I~ I~~~~~ ~ 1§§1 - I~ 1- <:!1~ 1 

· Na-NaOH: M-MEOH 

- 'i " C)·f.r !Vrt~:/1-ev 

ADDRm: ---:;~.::;.___:_ !.::!--i---=::..I..:.........::....::...!...._-.-..,----=-=-=--

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PHONE: ---::.__..:.:::.!..~l...._~-=-~---

fAX: -u+r-~a::J...::.......!..-1...!;-L -. -r----,-----

E·HAil: • ~VpY\ • 

VT OTHER: ________ _ 

GWP, OIL FUND, BROWNFIELD OR OTHER:--------

DATE NEEDED: :S/a'?i vel ·Tffr 

QA/QC 

REPORTING LEVEL 

A @ 

REPORTING OPTIONS 

PREUHS:@ OR No 

C I IF YES: FAX o~@ 

OR 

MAMCP 

PRESUMPTIVE CERTAINTY 

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ICE? @ No 

EQUIS 

89365 _j 

METALS: 8 RCRA 13 PP FE, MN Ps, Cu 

OTHER METAlS:-- ....,---------

DISSOLVED METALS FIELD FILTERED? YES No 

NOTES: {IE: SPECIAL DmrnoH lJHITS, BILLING INFO, IF DIFFERENT) 

SITE HISTORY: __________ _ 

SUSPECTED (ONTAHINATION: ________ _ 

Q

~~ReNisiW!By, 

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eastern analytical.' inc. 25 c""'~ o ... , 1 co.co<o. NH 03301 1 n. 603.218 0525 11800.287.0525 1 FA< 603.218 4591 1 E·M"' '""o""-'"."'@'-"'" ''o" 1 ~ '"""''o" 

profomonn/ 1" /Jomto>JII<nllm (WHITE: ORIGINAL GREEN: PROJECT MANAGER) 
ATTACHMENT D 

DATA QUALITY / DATA USABILITY ASSESSMENT 

 
Town Garage/Radio Beacon Site / Attachment D 

2049.02 \ ATT-D.docx 

August 25, 2010 

Page 1 

ATTACHMENT D 

DATA QUALITY/DATA USABILITY ASSESSMENT 

SHA performed an assessment of data quality and usability as described in SHA’s December 

2009 Quality Assurance Project Plan1

 (QAPP; Refer to Tables D-1 and D-2). 

x A review of field equipment calibration/calibration check data sheets indicated field 

instruments calibrated correctly and maintained calibration throughout the day. 

x A review of field documentation indicated field Standard Operating Procedures (SOPs) 

were followed appropriately. 

x A review of the analytical data packages provided by the laboratory indicated they were 

complete and laboratory Quality Control (QC) met applicable criteria, there were no 

analytes detected in the trip blank, and field duplicate pair (MW-2R/05-19-10 and Dup2/05-19-10) relative percent differences (RPD) met acceptance criteria. 

x As noted in the QAPP, reporting limits for cis- and trans-1,3-dichloropropene, 1,2-

dibromochloropropane, and 1,2-dibromoethane did not meet the AGQS/GW-1 

Groundwater Standard; however, none of these analytes are compounds of concern. 

Based on the data quality/data usability assessment, the data are of sufficient quality for their 

intended purpose (i.e., comparison to applicable groundwater2

 and surface water standards3

). 

S:\CONDATA\2000s\2049.02\originals\2010 Annual Report\ATT-D\ATT-D.docx 

 

1

 SHA, December 2, 2009, Quality Assurance Project Plan and Work Plan for Groundwater and Surface Water 

Monitoring, Town Garage/Radio Beacon Site, Londonderry, New Hampshire, NHDES Site No. 198509001. The 

QAPP was initially submitted to USEPA in August 2009. The QAPP was subsequently revised in December 

2009 based on comments by USEPA, and was approved on April 5, 2010. 

2

 The applicable groundwater standards for the site are the New Hampshire Department of Hampshire 

Environmental Services (NHDES) Ambient Groundwater Quality Standards (AGQS; which are based on federal 

Maximum Contaminant Levels [MCLs]) and the NHDES Contaminated Sites Risk Characterization and 

Management Policy (RCMP) GW-1 Groundwater Standards. 

3

 The applicable surface water standards are the Water Quality Criteria (WQC) as defined in NHDES Env-Wq 

1703.21. 
S:\CONDATA\2000s\2049.02\originals\2010 Annual Report\ATT-D\ATT D-DQA Tables.xlsx Page 1 of 2 Sanborn, Head & Associates, Inc.

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Benzene 71-43-2 5 2,000 <1 <1 <1 –

Butylbenzene (n-) 104-51-8 260 † <1 <1 <1 –

Butylbenzene (sec-) 135-98-8 260 † <1 <1 <1 –

Butylbenzene (tert-) 98-06-6 260 † <1 <1 <1 –

Ethylbenzene 100-41-4 700 50,000 <1 <1 <1 –

Isopropylbenzene (Cumene) 98-82-8 800 NA <1 <1 <1 –

Isopropyltoluene (p-) 99-87-6 260 † <1 <1 <1 –

Naphthalene 91-20-3 20 2,000 <5 <5 <5 –

Propylbenzene (n-) 103-65-1 260 † <1 <1 <1 –

Styrene 100-42-5 100 50,000 <1 <1 <1 –

Toluene 108-88-3 1,000 50,000 <1 <1 <1 –

Trimethylbenzene (1,2,4-) 95-63-6 330 3,000 <1 <1 <1 –

Trimethylbenzene (1,3,5-) 108-67-8 330 1,000 <1 <1 <1 –

Xylene (mp-) 108-38-3 106-42-3 NS NS <1 <1 <1 –

Xylene (o-) 95-47-6 NS NS <1 <1 <1 –

Xylenes (Total) 1330-20-7 10,000 30,000 ND ND ND –

&92&V

Carbon Tetrachloride 56-23-5 5 40 <2 <2 <2 –

Chlorobenzene (Monochlorobenzene) 108-90-7 100 2,000 <2 <2 <2 –

Chloroethane 75-00-3 NS NS <5 <5 <5 –

Chloroform (Trichloromethane) 67-66-3 70 ¢ 100 <2 <2 <2 –

Chloromethane 74-87-3 30 † <2 <2 <2 –

Chlorotoluene (2-) 95-49-8 100 † <2 <2 <2 –

Chlorotoluene (4-) 106-43-4 NS NS <2 <2 <2 –

Dichlorobenzene (1,2-) 95-50-1 600 20,000 <1 <1 <1 –

Dichlorobenzene (1,3-) 541-73-1 600 † <1 <1 <1 –

Dichlorobenzene (1,4-) 106-46-7 75 50,000 <1 <1 <1 –

Dichloroethane (1,1-) 75-34-3 81 10,000 <2 11 11 0%

Dichloroethane (1,2-) 107-06-2 5 300 <2 <2 <2 –

Dichloroethene (1,1-) 75-35-4 7 1,000 <1 7 7 0%

Dichloroethene (cis-1,2-) 156-59-2 70 NA <2 <2 <2 –

Dichloroethene (trans-1,2-) 156-60-5 100 NA <2 <2 <2 –

Dichloropropane (1,2-) 78-87-5 5 200 <2 <2 <2 –

Dichloropropane (1,3-) 142-28-9 NS NS <2 <2 <2 –

Dichloropropane (2,2-) 594-20-7 NS NS <2 <2 <2 –

Dichloropropene (1,1-) 563-58-6 NS NS <2 <2 <2 –

Dichloropropene (cis-1,3-) 10061-01-5 0.5 * ‡ † <2 <2 <2 –

Dichloropropene (trans-1,3-) 10061-02-6 0.5 * ‡ † <2 <2 <2 –

Hexachlorobutadiene 87-68-3 0.5 † <0.5 <0.5 <0.5 –

Methylene Chloride (Dichloromethane) 75-09-2 5 1,000 <5 <5 <5 –

Tetrachloroethane (1,1,1,2-) 630-20-6 70 † <2 <2 <2 –

Tetrachloroethane (1,1,2,2-) 79-34-5 2 1000 <2 <2 <2 –

Tetrachloroethene (PCE) 127-18-4 5 80 <2 <2 <2 –

Trichlorobenzene (1,2,3-) 87-61-6 NS NS <1 <1 <1 –

Trichlorobenzene (1,2,4-) 120-82-1 70 1,000 <1 <1 <1 –

Trichlorobenzene (1,3,5-) 108-70-3 40 † <1 <1 <1 –

Trichloroethane (1,1,1-) 71-55-6 200 20,000 <2 <2 <2 –

Trichloroethane (1,1,2-) 79-00-5 5 500 <2 <2 <2 –

Trichloroethene (TCE) 79-01-6 5 90 <2 <2 <2 –

Trichloropropane (1,2,3-) 96-18-4 40 † <2 <2 <2 –

Vinyl Chloride 75-01-4 2 10 <2 <2 <2 –

2WKHU92&V

Acetone 67-64-1 6,000 † <10 <10 <10 –

Bromobenzene 108-86-1 NS NS <2 <2 <2 –

Bromochloromethane 74-97-5 NS NS <2 <2 <2 –

Bromodichloromethane 75-27-4 0.6 ¢ NA <0.5 <0.5 <0.5 –

Bromoform 75-25-2 4 ¢ 2,000 <2 <2 <2 –

Bromomethane 74-83-9 10 10 <2 <2 <2 –

Butanone (2-) (MEK) 78-93-3 4,000 50,000 <10 <10 <10 –

Carbon Disulfide 75-15-0 70 † <5 <5 <5 –

Dibromo-3-chloropropane (1,2-) (DBCP) 96-12-8 0.2 # † <2 <2 <2 –

$QDO\WH &$6

1RV *:

$*46 *: 'XSOLFDWH53'
S:\CONDATA\2000s\2049.02\originals\2010 Annual Report\ATT-D\ATT D-DQA Tables.xlsx Page 2 of 2 Sanborn, Head & Associates, Inc.

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5HYLHZRI$QDO\WLFDO5HSRUWLQJ/LPLWV7ULS%ODQNDQG'XSOLFDWH53'±*URXQGZDWHU

7RZQ*DUDJH5DGLR%HDFRQ6LWH±/RQGRQGHUU\1HZ+DPSVKLUH

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Dibromochloromethane 124-48-1 60 ¢ NA <2 <2 <2 –

Dibromoethane (1,2-) (Ethylene dibromide) 106-93-4 0.05 700 <2 <2 <2 –

Dibromomethane (Methylene bromide) 74-95-3 NS NS <2 <2 <2 –

Dichlorodifluoromethane 75-71-8 1,000 † <5 <5 <5 –

Diethyl Ether (Ethyl Ether) 60-29-7 1,400 † <5 <5 <5 –

Diisopropyl ether (DIPE) 108-20-3 120 † <5 <5 <5 –

Ethyl tertiary butyl ether (ETBE) 637-92-3 40 † <5 <5 <5 –

Hexanone (2-) 591-78-6 NS NS <10 <10 <10 –

Methyl-2-pentanone (4-) (MIBK) 108-10-1 2,000 50,000 <10 <10 <10 –

Methyl-t-butyl Ether (MTBE) 1634-04-4 13 10,000 <5 <5 <5 –

Tertiary amyl methyl ether (TAME) 994-05-8 140 † <5 <5 <5 –

Tertiary butyl alcohol (TBA) (tert-Butanol) 75-65-0 40 † <30 <30 <30 –

Tetrahydrofuran 109-99-9 154 † <10 <10 <10 –

Trichlorofluoromethane 75-69-4 2,000 † <5 <5 <5 –

Notes:

1. Samples were collected by SHA on the dates indicated and analyzed by Eastern Analytical, Inc. (EAI) of Concord, New Hampshire for volatile organic compounds (VOCs) by

United States Environmental Protection Agency (USEPA) Method 8260B.

2. "<" indicates the analyte was not detected above the indicated laboratory reporting limit.

3. "GW-1" and "GW-2" Groundwater Standards are from the New Hampshire Department of Environmental Services (NHDES) Contaminated Sites Risk Characterization and

Management Policy (RCMP) (January 1998, with 2000 through 2007 revisions/addenda). GW-1 Groundwater Standards are equivalent to the Ambient Groundwater Quality Standards

(AGQSs) promulgated in Env-Or 600 (July 2008). "‡" indicates the value depicted is the revised AGQS which was raised in the July 2008 update to Env-Or 600. The AGQS/GW-1

Groundwater Standards are intended to be protective of groundwater as a source of drinking water. The GW-2 Groundwater Standards apply to groundwater as a potential source of

indoor air contamination.

4. "AVOCs" are aromatic VOCs.

"CVOCs" are chlorinated VOCs.

"†" indicates the RCMP lists as not currently available.

"NA" indicates the RCMP lists as not applicable.

"NS" indicates the analyte is not listed in the RCMP.

"ND" indicates not detected.

"*" indicates the standard shown is for 1,3-dichloropropene (no isomer specified).

"#" indicates the standard shown is for dibromochloropropane (no isomer specified).

"¢" indicates the RCMP lists the AGQS for total trihalomethanes (bromoform, bromodichloromethane, dibromochloromethane and chloroform) shall be 80 μg/l if the groundwater is

contaminated by chlorinated water supplies.

5. Bold italic reporting limits do not meet the AGQS/GW-1 Groundwater Standards. However, these are not identified as compounds of concern at this site.

Shaded values are detected concentrations. No detected concentrations exceed the AGQS/GW-1 or GW-2 Groundwater Standards.

6. Duplicate % RPD indicates the relative percent difference as calculated by the following formula:

| Result1 - Result2 | / ((Result1 + Result2) / 2) * 100

7. "–" indicates the RPD can not be calculated because one or both of the results are non-detect.

8. Refer to SHA's December 2009 Quality Assurance Project Plan for further details on data quality and data usability.
S:\CONDATA\2000s\2049.02\originals\2010 Annual Report\ATT-D\ATT D-DQA Tables.xlsx Page 1 of 1 Sanborn, Head & Associates, Inc.

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5HYLHZRI$QDO\WLFDO/DERUDWRU\4&±*URXQGZDWHU

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/DE%DWFK 0DWUL[ $QDO\VHV (% (%

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EAI 89365 GW VOCs – – TB-01 / 

05-19-10 Yes Clean

Within 

acceptance 

criteria

–

Within 

acceptance 

criteria

Notes:

1. Abbreviations/Acronyms:

EAI = Eastern Analytical, Inc.

GW = groundwater

EB = equipment rinseate blank sample

TB = trip blank sample

LCS = laboratory control sample

LCSD = laboratory control sample duplicate

MS = matrix spike sample

MSD = matrix spike duplicate sample

"–" = not applicable

2. Refer to SHA's December 2009 Quality Assurance Project Plan for further details on data quality and data usability.
ATTACHMENT E 

SUMMARY OF ADDITIONAL GROUNDWATER AND 

SURFACE WATER MONITORING 
MEMORANDUM

To: Sherilyn B. Young, Esq. – Rath, Young and Pignatelli, P.A. 

From: Paul L. Rydel, P.G. 

 Scott R. Nerney, P.E. 

File: 2049.02 

Date: August 25, 2010 

Re: Additional Groundwater and Surface Water Monitoring 

Town Garage/Radio Beacon Site 

 Londonderry, New Hampshire 

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

completed the 2010 annual groundwater quality monitoring event at the Town Garage/Radio 

Beacon Site (site) in May 2010. In addition to the annual monitoring activities (collection of a 

Volatile Organic Compound [VOC] groundwater sample at monitoring well MW-2R), the 

United States Environmental Protection Agency (USEPA) also requested that additional 

groundwater and surface water monitoring be completed at the site. 

The additional groundwater and surface water sampling was a single monitoring event completed 

to provide additional information regarding site conditions. Based on changes in groundwater 

standards since the ROD was issued in 1992, USEPA requested that the sample from MW-2R 

also be analyzed for arsenic and 1,4-dioxane. Based on results of samples collected during the 

Remedial Investigation (RI)1

, the USEPA also requested surface water locations be sampled 

again as the site groundwater nears cleanup levels specified in the Record of Decision (ROD). 

Furthermore, USEPA requested collection of a surface water sample at a reference location 

(Thornton Road) in Londonderry, New Hampshire. 

The additional groundwater and surface water monitoring described herein was completed in 

accordance with SHA’s December 2009 Quality Assurance Project Plan (QAPP).2

 A discussion 

of VOC analysis is included in the 2010 Annual Summary Report. 

 

1

 Metcalf & Eddy, March 1992, Final Technical Report of Field Investigation. 

2

 SHA, December 2, 2009, Quality Assurance Project Plan and Work Plan for Groundwater and Surface Water 

Monitoring, Town Garage/Radio Beacon Site, Londonderry, New Hampshire, NHDES Site No. 198509001. The 

QAPP was initially submitted to USEPA in August 2009. The QAPP was subsequently revised in December 

2009 based on comments by USEPA, and was approved on April 5, 2010. 
Town Garage/Radio Beacon Site / Additional Sampling Memo 

2049.02 \ 20100825_E_memo.docx 

August 25, 2010 

Page 2 

GROUNDWATER SAMPLING AND ANALYSIS 

One groundwater sample was collected from monitoring well MW-2R3

 on May 19, 2010 for 

analysis of 1,4-dioxane and unfiltered arsenic. Prior to purging/sampling monitoring well MW2R, the groundwater level in the well was measured with an electric water level meter. The 

groundwater sample from monitoring well MW-2R was collected using a portable submersible 

bladder pump. Low-flow sampling techniques were used, as described in SHA’s December 2009 

QAPP. Water quality parameters including temperature, pH, specific conductance, oxygen 

reduction potential (ORP), and dissolved oxygen were monitored during purging using an YSI 

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

monitored via a sampling port installed prior to the flow cell using a Hach 2100P turbidity meter. 

Upon parameter stabilization, the in-line flow cell was disconnected and primary and duplicate 

groundwater samples were collected. A summary of stabilized water quality parameter data is 

presented on the enclosed Groundwater Quality Field Sampling Summary. 

The groundwater samples for 1,4-dioxane analysis were placed in 40-milliliter (ml) glass vials 

with Teflon® septa, which were provided pre-cleaned by the analytical laboratory. Samples for 

unfiltered arsenic analysis were placed in 200-milliliter plastic bottles, which were provided, precleaned and pre-preserved with nitric acid (HNO3), by the analytical laboratory. Following 

collection, sample containers were stored in a cooler packed with ice and delivered to Eastern 

Analytical, Inc. (EAI) of Concord, New Hampshire, a New Hampshire certified laboratory, for 

analysis of 1,4-dioxane by USEPA Method 8260B in selective ion monitoring (SIM) mode and 

unfiltered arsenic by USEPA Method 6020A. The samples were handled and transported to the 

laboratory following standard chain-of-custody procedures. A trip blank, prepared beforehand by 

EAI, was also analyzed for 1,4-dioxane by USEPA Method 8260B in SIM mode. A copy of 

EAI’s analytical laboratory data report for this monitoring round is attached. 

SURFACE WATER SAMPLING AND ANALYSIS 

On May 19, 2010, surface water samples were collected from two locations (SW-1 and SW-2)4

sampled as part of the RI. In addition to the RI locations, a reference sample was collected at the 

Thornton Road reference location as requested by USEPA. Prior to sampling each surface water 

location, the depth to water and water column thickness were measured from the top of the 

wooden stake5

 

3

 Replacement monitoring well MW-2R was installed October 30, 2006 as a replacement to monitoring well MW2D-6. The well installation was summarized in the Site’s 2006 Annual Summary Report dated January 31, 2006. 

 using a tape measure marked in hundredths of feet. The surface water samples 

4

 In the RI Investigation, the SW-1 sampling location was referred to as the Wetland Surface Water (located east 

of the Town Garage Property), and SW-2 was referred to as the Hill Slope Ponded Drainage Water (located north 

of the Town Garage Property). Analysis of surface water samples from SW-1 and SW-2 completed in 1990 as 

part of the RI had indicated the metals aluminum, iron, lead, nickel, and zinc at concentration exceeding the 

ambient water quality criteria. 

5

 On May 12, 2009, USEPA and SHA visited the surface water sampling locations, including the Thornton Road 

reference location. At each location, a wooden stake with survey flagging was installed to mark the location for 

future sampling. 
Town Garage/Radio Beacon Site / Additional Sampling Memo 

2049.02 \ 20100825_E_memo.docx 

August 25, 2010 

Page 3 

were collected directly from the surface water bodies using 60-ml disposable syringes prior to 

filling the laboratory bottles. To evaluate potential artifacts of sampling, field filtered samples 

were also collected using a 0.45-micron single-use filter. A duplicate sample was collected from 

location SW-1. 

The surface water samples were placed in plastic bottles, which were provided pre-cleaned6

 by 

the analytical laboratory. Following collection, sample containers were stored in a cooler packed 

with ice and transported to EAI via laboratory courier for analysis. The surface water samples 

were analyzed for aluminum, iron, lead, nickel, zinc, (filtered and unfiltered) by USEPA Method 

6020A, hardness (unfiltered) by Standard Method 2340B, and total suspended solids (TSS; 

unfiltered) by Standard Method 2540D. The samples were handled and transported following 

standard chain-of-custody procedures. A copy of EAI’s analytical laboratory data report for this 

monitoring round is attached. 

Water quality parameters including temperature, pH, specific conductance, ORP, and dissolved 

oxygen were monitored using an YSI Model 600 XLM multi-parameter water quality meter. A 

summary of water quality parameter data for the May 2010 round is presented on the Surface 

Water Quality Field Sampling Summary. 

SUMMARY OF ANALYTICAL RESULTS 

SHA performed an assessment of data quality and usability as described in SHA’s December 

2009 QAPP (refer to attached tables). Based on the data quality/data usability assessment, the 

data are of sufficient quality for their intended purpose (i.e., comparison to applicable 

groundwater7

 and surface water standards8

). 

Groundwater 

As Table 1 indicates, the May 2010 groundwater quality monitoring results for monitoring well 

MW-2R indicate that the concentrations of 1,4-dioxane and unfiltered arsenic were less than the 

respective laboratory reporting limits (1 microgram per liter [μg/l]) in both the primary and 

duplicate samples. 

 

6

 Filtered and unfiltered metals and hardness bottles were pre-preserved by the laboratory with nitric acid (HNO3); 

the bottles for total suspended solids analysis were not preserved. 

7

 The applicable groundwater standards for the site are the New Hampshire Department of Hampshire 

Environmental Services (NHDES) Ambient Groundwater Quality Standards (AGQS; which are based on federal 

Maximum Contaminant Levels [MCLs]) and the NHDES Contaminated Sites Risk Characterization and 

Management Policy (RCMP) GW-1 Groundwater Standards. 

8

 The applicable surface water standards are the Water Quality Criteria (WQC) as defined in NHDES Env-Wq 

1703.21. 
Town Garage/Radio Beacon Site / Additional Sampling Memo 

2049.02 \ 20100825_E_memo.docx 

August 25, 2010 

Page 4 

Surface Water 

The following summarizes the results of May 2010 surface water sampling requested by USEPA 

(refer to Tables 2.a and 2.b). As indicated above, the surface water samples were analyzed for 

hardness to allow comparison of concentrations of select analytes (i.e., lead, nickel, and zinc) to 

the Fresh Water Aquatic Life Water Quality Criteria (WQC) 9. To evaluate potential artifacts of 

sampling, filtered and unfiltered surface water samples were collected. Filtered concentrations 

were less than unfiltered concentrations. The unfiltered samples were also analyzed for TSS. The 

results of this analysis are summarized below: 

x SW-1: Aluminum, iron, lead, nickel, and zinc were not detected at concentrations above the 

Fresh Water Aquatic Life WQC. 

x SW-2: The concentration of iron in the unfiltered sample was greater than in the filtered 

sample, which was greater than the Fresh Water Aquatic Life WQC. Aluminum, nickel, lead, 

and zinc were not detected at concentrations above the Fresh Water Aquatic Life WQC. 

x Thornton Road Reference Location: Aluminum, iron, lead, nickel, and zinc were not detected 

at concentrations above the Fresh Water Aquatic Life WQC. 

CLOSING 

Results of the May 2010 additional groundwater and surface water monitoring at the Town 

Garage/Radio Beacon Site in Londonderry, New Hampshire indicate that with the exception of 

iron at surface water location SW-2 (which exceeded the Fresh Water Aquatic Life WQC), there 

were no exceedances of the applicable water quality standards for the analytes of interest in 

sampling requested by USEPA. We note that the elevated iron concentration in surface water at 

the SW-2 location is potentially related to surface runoff from the Town Garage facility. 

Based on the results of this investigation, we do not believe that additional sampling and analysis 

of groundwater for arsenic and 1,4-dioxane at MW-2R or surface water samples from SW-1 and 

SW-2 is necessary. 

SRN/PLR:tmw 

Encl. Tables 1, 2.a and 2.b 

Figure 1 

Attachments: 

 Groundwater Quality Field Sampling Summary 

Surface Water Quality Field Sampling Summary 

Analytical Laboratory Reports 

Data Quality / Data Usability Assessment (and supporting tables) 

S:\CONDATA\2000s\2049.02\originals\2010 Annual Report\ATT-E\20100825_E_memo.docx 

 

9

 The Fresh Water Aquatic Life WQC were the same as the Ambient Water Quality Criteria used in the RI. Fresh 

Water Aquatic Life values for lead, nickel, and zinc are hardness dependent. 
TABLES 
TABLE 1

Summary of Analytical Results – Groundwater

Town Garage/Radio Beacon Site

Londonderry, New Hampshire

NHDES Site No. 198509001

S:\CONDATA\2000s\2049.02\originals\2010 Annual Report\ATT-E\ATT_E-Tables.xlsx Page 1 of 1 Sanborn, Head & Associates, Inc.

Concentrations in μg/l.

MW-2R

05/19/10 05/19/10 Dup.

Dioxane (1,4-) 3 † <1 <1

Arsenic 10 NA <1 <1

GW-2 Analyte GW-1 (AGQS)

Notes:

1. Samples were collected by SHA on the date indicated and analyzed by Eastern Analytical, Inc. of Concord,

New Hampshire for 1,4-dioxane United States Environmental Protection Agency (USEPA) Method 8260B in

selective ion monitoring (SIM) mode, and unfiltered arsenic by USEPA Method 6020A.

2. Concentrations are presented in micrograms per liter (μg/l) which are equivalent to parts per billion (ppb).

3. "<" indicates the analyte was not detected above the indicated laboratory reporting limit.

4. "GW-1" and "GW-2" Groundwater Standards are from the New Hampshire Department of Environmental

Services (NHDES) Contaminated Sites Risk Characterization and Management Policy (RCMP) (January 1998,

with 2000 through 2007 revisions/addenda). GW-1 Groundwater Standards are equivalent to the Ambient

Groundwater Quality Standards (AGQSs) promulgated in Env-Or 600 (July 2008). The AGQS/GW-1

Groundwater Standards are intended to be protective of groundwater as a source of drinking water. The GW-2

Groundwater Standards apply to groundwater as a potential source of indoor air contamination.

5. "†" indicates the RCMP lists as not currently available.

"NA" indicates the RCMP lists as not applicable.
TABLE 2.a

Summary of Analytical Results – Surface Water – Non-Hardness Dependent Metals

Town Garage/Radio Beacon Site

Londonderry, New Hampshire

NHDES Site No. 198509001

S:\CONDATA\2000s\2049.02\originals\2010 Annual Report\ATT-E\ATT_E-Tables.xlsx Page 1 of 1 Sanborn, Head & Associates, Inc.

Concentrations in μg/l

SW-1 

(Wetland Surface Water)

SW-2 

(Hillslope Ponded

Drainage Water)

Thornton 

Road 

Reference 

Acute Chronic 12/13/90 12/13/90

Dup. 05/19/10 05/19/10Dup. 12/13/90 05/19/10 05/19/10

Unfiltered

Aluminum 750 87 460 541 <50 <50 5,590 50 50

Iron NS 1,000 962 1,110 160 230 1,330 12,000 70

Total Suspended Solids 41,000 250,000 49,000 18,000

Filtered

Aluminum 750 87 <50 <50 <50 <50

Iron NS 1,000 <50 <50 8,900 <50

Lead 14 † 0.54 † <0.5 <0.5 <0.5 <0.5

Nickel 144.9 † 16.1 † 11 8 1

Zinc 36.2 † 36.5 † <5 <5 10 8

Analyte

Water Quality 

Criteria

for Fresh Water

Aquatic Life

Notes:

1. Analytical data for samples collected in 1990 were taken from Table 6-148 and Appendix T - Analytical Data – Surface Water/Sediment

from a report entitled, "Final Technical Report of Field Investigation," dated March 1992 prepared by Metcalf & Eddy.

Samples collected in May 2010 were collected by SHA personnel and submitted to Eastern Analytical, Inc. of Concord, New Hampshire for

analysis of filtered and unfiltered metals by USEPA Method 6020A, and total suspended solids by Standard Method 2340D.

2. Results are presented in micrograms per liter (μg/l) which are equivalent to parts per billion (ppb).

"<" indicates the analyte was not detected above the listed laboratory reporting limit.

"J" indicates the quantitation is approximate.

3. "Water Quality Criteria" refers to the New Hampshire Water Quality Criteria for Toxic Substances as defined in Env-Wq 1703.21 (May

2008).

"Acute" refers to the acute criteria for the protection of aquatic life in fresh water.

"Chronic" refers to the chronic criteria for the protection of aquatic life in fresh water.

"†" Refer to Env-Wq 1703.21 for additional notes for these criteria.

4. Bold values exceed the NHDES Freshwater Acute Criteria.

Shaded values exceed the NHDES Freshwater Chronic Criteria.
TABLE 2.b

Summary of Analytical Results – Surface Water – Hardness Dependent Metals (Unfiltered)

Town Garage/Radio Beacon Site

Londonderry, New Hampshire

NHDES Site No. 198509001

S:\CONDATA\2000s\2049.02\originals\2010 Annual Report\ATT-E\ATT_E-Tables.xlsx Page 1 of 1 

Concentrations in μg/l

SW-1 

(Wetland Surface Water)

SW-2 

(Hillslope Ponded

Drainage Water)

12/13/90 12/13/1990 Dup. 05/19/10 05/19/10 Dup. 12/13/90 05/19/10 

Total Hardness (as CaCO3) 74,165 74,206 48,000 46,000 248,268 130,000 

Lead

Acute Hardness Adjusted WQC 56 56 32 30 260 114 

Chronic Hardness Adjusted WQC 2.2 2.2 1.2 1.2 10.1 4.4 

Analytical Result 5.7 J 6.4 J <0.5 <0.5 9.9 <0.5 

Nickel

Acute Hardness Adjusted WQC 364 365 252 243 1,013 586 

Chronic Hardness Adjusted WQC 41 41 28 27 113 65 

Analytical Result <4 <4 1 1 21.2 8 

Zinc

Acute Hardness Adjusted WQC 93 93 64 62 259 150 

Chronic Hardness Adjusted WQC 93 93 64 62 259 150 

Analytical Result <17.5 <20.5 9 <5 115 12 

Analyte

Notes:1. Analytical data for samples collected in 1990 were taken from Table 6-148 and Appendix T - Analytical Data – Surface Water/Sediment from a report entitled, "

Report of Field Investigation," dated March 1992 prepared by Metcalf & Eddy.

Samples collected in May 2010 were collected by SHA personnel and submitted to Eastern Analytical, Inc. of Concord, New Hampshire for analysis of unfiltere

USEPA Method 6020A and total hardness as CaCO3 by USEPA Method 6020A and Standard Method 2340B.

2. Results are presented in micrograms per liter (μg/l) which are equivalent to parts per billion (ppb).

"<" indicates the analyte was not detected above the listed laboratory reporting limit."J" indicates the quantitation is approximate.

3. "Acute WQC" and "Chronic WQC" refer to the acute and chronic criteria (respectively) for the protection of aquatic life in fresh water adjusted for hardness 

New Hampshire Water Quality Criteria for Toxic Substances as defined in Env-Wq 1703.21 (May 2008). These values were calculated in accordance with Env-W

Env-Wq 1703.24. Env-Wq 1703.22(f) indicates that the freshwater aquatic criteria for select metals correspond to a total hardness of 25,000 μg/l and that to cal

criteria for other hardness values between 25,000 and 400,000 μg/l the equations shown in Env-Wq 1703.24 are to be used. Refer to Env-Wq 1703 for further inf

calculations (http://des.nh.gov/organization/commissioner/legal/rules/documents/env-wq1700.pdf).4. No detected values exceed the applicable acute hardness adjusted WQC.

Shaded values exceed the applicable chronic hardness adjusted WQC.

5. For RI data (December 1990), the hardness was calculated by using recorded calcium and magnesium concentrations and the following equation (from Drever, JGeochemistry of Natural Waters, Prentice Hall: Upper Saddle River, NJ, 436 pp):

Equivalent CaCO3 (μg/l) = [2.5 * milligrams of calcium/liter + 4.1 * milligrams of magnesium/liter] * 1,000
FIGURE
SW-2

SW-1

Town

Garage Site

MW-2R

Town

Garage Site

Groundwater

Management

Zone

SW-2

SW-1

Thornton Road

MW-6D-2,4

MW-2R

GMP Groundwater SamplingLocationGroundwater Monitoring Well (not

sampled as part of the GMP)

1990 Remedial Investigation

Surface Water Sampling LocationSurface Water ReferenceSampling Location

(Locations should be considered approximate)

File:Q:\CONCORD\2049.02\dwg\July 2010 Annual Summary\2049_02-Figs.dwg Plot Date: 8-26-10

Legend

MW-2R Staked Thornton

Road Location

Staked SW-2

Location

Staked SW-1

Location

Notes:

1. Sanborn, Head & Associates, Inc. (SHA) downloaded the

2003 digital orthophoto quadrangle, original scale

1:12,000, from the New Hampshire Geographically

Referenced Analysis and Information Transfer System(NH Granit) Website. The original source of thephotograph is the Complex Systems Research Center(CSRC) at the University of New Hampshire.

2. Microsoft Virtual Earth(TM) imagery available through

ESRI's ArcGIS Online services. Image courtesy of NASA,(c)2009 Microsoft Corporation (c) 2009 NAV/TEQ (c)

2009 Pictometry International Corp.

3. Insert photographs were taken during SHA's May 2010

site visit.

Thornton

Road

MW-2R

SW-1

Photo 1 

Photo 3 

MW-6D-2,4
ATTACHMENTS
Groundwater Quality Field Sampling Summary

S:\CONDATA\2000s\2049.02\originals\2010 Annual Report\20100519 GwQFSS.xlsx Page 1 of 1 Sanborn, Head & Associates, Inc.

 Date:

Field Measurements

 Sampling Location MW-2R

 Reference Point TPVC

 Reference Point Elevation (feet) 355.69

 Depth to Water (feet) 2.64

 Water Table Elevation (feet) 353.05

 Depth to Bottom (feet) 48.5

 pH (standard units) 7.0

 Specific Conductance (μS/cm) 12,200

 Temperature (oC) 12.8

 Dissolved Oxygen (mg/L) 0.9

 Oxidation Reduction Potential (mv) 149

 Date of Sample 19-May

 Sample Time 1330

 Comment Reference Number 1,2,3,4,5

Comments

 pH Meter: YSI 600

 Conductivity Meter: YSI 600

 Water Level Meter: Slope Indicator

 Other: Hach 2100P Turbidimeter

 Weather: Light rain, breezy, 50s oF

 Project Manager: S. Nerney

 Collector(s): S. Nerney, T. White

 Project Number: 2049.02

 Project Name: Londonderry Town Garage Superfund Site

 Project Location: Londonderry, New Hampshire

May 19, 2010

1. Field duplicate (labeled "Dup-2/05-19-10") collected from location MW-2R.

2. Groundwater monitoring was completed in accordance with SHA’s December 2009 Quality Assurance Project Plan

(QAPP).

3. MW-2R was purged using a 3/4-inch diameter bladder pump at flow rates approximately 40 ml/min. The intake of the

bladder pump was set at approximately 37 ft below ground surface [bgs], which corresponded to the mid-screen depth. The

flow cell volume was approximately 200 ml.

4. Field screening parameters were generally monitored approximately every five minutes during purging. After the field

parameters stabilized, primary and duplicate groundwater samples were collected. Indicated field parameters were the last

stabilized values recorded prior to sample collection.

5. Groundwater samples were analyzed for VOCs, 1,4-dioxane, and arsenic (unfiltered).
Surface Water Quality Field Sampling Summary

S:\CONDATA\2000s\2049.02\originals\

2010 Annual Report\ATT-E\20100519 SWQFSS.xlsx Page 1 of 1 Sanborn, Head & Associates, Inc.

 Project Number: 2049.02

 Project Name:

 Project Location:

Field Measurements

 Sampling Location Ref SW-1 SW-2

 Collector(s) S. Nerney/T. White S. Nerney/T. White S. Nerney/T. White

 Reference Point TOS TOS TOS

 Depth to Water (feet) 2.5 2.55 1.95

 Depth to Stream Bed (feet) 2.75 2.85 2.65

Thickness of Water Column

 (DTSB-DTW) 0.25 0.30 0.70

 pH (standard units) 6.4 6.6 6.2

 Specific Conductance (μS/cm) 88 320 4,978

 Temperature (oC) 11.6 11.5 11.7

 Dissolved Oxygen (mg/L) 6.9 7.9 6.3

 Oxidation Reduction Potential (mv) 165 162 59

 Date of Sample 19-May 19-May 19-May

 Sample Time 0920 1000 1035

 Comment Reference Number 1,3,4,5 2,3,4,5 3,4,5

Comments

 Weather: Light rain, breezy, 50s oF Project Manager: S. Nerney

 Measurement Device: YSI 600 XLM

Londonderry Town Garage Superfund Site

Londonderry, New Hampshire

 Date: May 19, 2010

1. Thornton Road reference location.

2. Field duplicate (labeled "Dup-1/05-19-10") collected from location SW-1.

3. Surface water monitoring was completed in accordance with SHA’s December 2009 Quality Assurance Project Plan

(QAPP).

4. The surface water samples were collected from the surface water bodies using 60-ml disposable syringes prior to filling the

laboratory bottles. To evaluate potential artifacts of sampling, field filtered samples were also collected using a 0.45-micron

single-use filter.

5. Field parameters were measured in-situ at the sampling location.

6. The surface water samples were analyzed for aluminum, arsenic, iron, lead, nickel, zinc, (filtered and unfiltered) by USEPA

Method 6020A, total hardness (unfiltered) by Standard Method 2340B, and total suspended solids (unfiltered) by Standard

Method 2540D.

TOS = Top of Stake
e stern an lytical, inc. ~------~~---------- -- ~~~\M: --~----f-Jr_o_0~e-S-\t~(J_n_a~l-!~a~h-o•r•a-tr-~1-~--~-e-rt-Jt_c_c-,----

JUN 14 2010 

Scott Nerney 

Sanborn, Head & Associates, Inc. (N \.:.L.. __ S_H_A_-_C_o_n_c_o_r_d _ _. 

20 Foundry Street 

Concord NH 03301 

Subject: Laboratory Report 

Eastern Analytical, Inc. ID: 89363 

Client Identification: LTG 1 2049.02 

Date Received: 5/20/2010 

Report revision/reissue: Revision, replaces report dated 5/28/10 

Revision information: Reporting Limits for Metals have been revised. 

Dear Mr. Nerney: 

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

with our QA/QC 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. 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 to all EAI reports: 

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

< : "less than" followed by the reporting limit 

> : "greater than" followed by the reporting limit 

%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). 

The following information is contained within this report: Sample Conditions summary, Analytical Results/Data, Quality 

Control data (if requested) and copies of the Chain of Custody. This report may not be reproduced except in full, 

without the the written approval of the laboratory. 

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 Date #of pages (excluding cover letter) 

Ea~tern Analync:al, Inc. l"> l hrru ll11nv<, l-•Hl..:ord, Nf l OBUJ www.cflilab:;.com TELh03 2211 U~l:> lliOO 2di-0521 MX 60lllR- +1')J 
SAMPLE CONDITIONS PAGE 

Eastern Analytical, Inc. ID#: 89363 

Client: Sanborn, Head & Associates, Inc. (NH) Client Designation: LTG I 2049.02 

Temperature upon receipt (

0

C): 2.4 Received on ice or cold packs (Yes/No): y 

Date Date Sample % Dry 

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

89363.01 Ref/ 05-19-10 5/20/1 0 5/19/1 0 aqueous Adheres to Sample Acceptance Policy 

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

lgnitibi/ity, 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. WWIN.eailabs.com Phone: (603) 228-0525 1 
LABORATORY REPORT 

Eastern Analytical, Inc. 10#: 89363 

Client: Sanborn, Head & Associates, Inc. Client Designation: LTG 1 2049.02 

(NH) 

--- Sample ID: Ref I 05-19-10 

Lab Sample ID: 89363.01 

Matri x: aqueous 

Date Sampled: 5/19/10 

Date Received: 5/20/10 

Solids Suspended 18 

eastern analytical, inc. www. eailabs. com 

Analysis 

Units Date Time Method Analyst 

mg/L 5/25/1 0 8:11 2540D JCC 

Phone: (603) 228-0525 

2 
QC REPORT 

Eastern Analytical, Inc. 10#: 89363 

Client: Sanborn, Head & Associates, Inc. Client Designation: LTG 1 2049.02 

Date of 

Parameter Name Blank LCS LCSD Units Analysis Limits RPD Method 

Solids Suspended <5 100 (100 %R) 94 (94 %R) (6 RPD) mg/L 5/25/1 0 90 - 110 20 

Samples were analyzed within holding times unless noted on the sample results page. 

Instrumentation was calibrated in accordance with the method requirements. 

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

The associated matrix spikes and/or Laboratory Control Samples met the above stated criteria. 

Exceptions to the above statements are flagged or noted above or on the QC Narrative page. 

* Flagged analyte recoveries deviated from the QNQC limits. 

eastern analytical, inc. WNW.eailabs.com Phone: (603) 228-0525 

25400 

3 
1~1 LAB ORA TORY REPORT 

Eastern Analytical, Inc. ID#: 89363 

Client: Sanborn, Head & Assoc iates, Inc. (NH) Client Designation: LTG 1 2049.02 

Sample 10: Ref/05-19-10 

Lab Sample 10: 89363.01 

Matrix: aqueous 

Date Sampled: 5/19/10 Analytical Date of 

Date Received: 5/20/10 Matrix Units Analysis Method Analyst 

Aluminum 0.05 AqTot mg/L 5/21/10 6020 OS 

Aluminum < 0.05 AqOis mg/L 5/21/10 6020 OS 

Iron 0.07 AqTot mg/L 5/21/10 6020 OS 

Iron < 0.05 AqDis mg/L 5/21/10 6020 OS 

Lead < 0.0005 AqTot mg/L 5/21/10 6020 OS 

Lead < 0.0005 AqOis mg/L 5/21/10 6020 OS 

Nickel < 0.001 AqTot mg/L 5/21/10 6020 OS 

Nickel 0.001 AqDis mg/L 5/21/10 6020 OS 

Zinc < 0.005 AqTot mg/L 5/21/10 6020 OS 

Zinc 0.008 AqOis mg/L 5/21/10 6020 OS 

Total Hardness (as CaC03) 26 AqTot mg/L 5/21/10 6020 OS 

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

4 
QC REPORT 

Eastern Analytical, Inc. ID#: 89363 

Client: Sanborn, Head & Associates, Inc. (NH) Client Designation: LTG I 2049.02 

Date of 

Parameter Name Blank LCS LCSD Units Analysis Limits 

Aluminum < 0.05 12(108%R) mg/L 5/21/10 80 - 120 

Iron < 0.05 11 (99 %R) mg/L 5/21/10 80- 120 

Lead < 0.0005 1.0 (100 %R) mg/L 5/21/10 80 - 120 

Nickel 0.001 0.94 (94 %R) mg/L 5/21/10 80- 120 

Zinc < 0.005 0.89 (89 %R) mg/L 5/21/10 80- 120 

MS/MSD MS/MSD Date of 

Parameter Name Parent 10 Parent Matrix Spike MSD Units Analysis Limits 

Aluminum 8931 7.02 < 0.05 12 (112 %R) 12 (111 %R) (1 RPD) 

Iron 89317.02 1.3 12 (98 %R) 12 (98 %R) (0 RPD) 

Lead 89317.02 < 0.0005 0.94 (94 %R) 0.95 (95 %R) (1 RPD) 

Nickel 89317.02 0.001 1.1 (105 %R) 0.98 (98 %R) (7 RPD) 

Zinc 89317.02 < 0.005 1.0 (99 %R) 0.97 (97 %R) (2 RPD) 

Samples were analyzed within holding times unless noted on the sample results page. 

Instrumentation was calibrated in accordance with the method requirements. 

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

The associated matrix spikes and/or Laboratory Control Samples met the above stated criteria. 

Exceptions to the above statements are flagged or noted above or on the QC Narrative page. 

• Flagged analyte recoveries deviated from the QAIQC limits. 

mg/L 5/21/10 75-125 

mg/L 5/21/10 75-125 

mg/L 5/21/10 75-125 

mg/L 5/21/10 75-125 

mg/L 5/21/10 75-125 

RPD 

20 

20 

20 

20 

20 

RPD 

20 

20 

20 

20 

20 

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

Method 

6020 

6020 

6020 

6020 

6020 

Method 

6020 

6020 

6020 

6020 

6020 

5 
Page Lof_/_ CHAIN-OF-CUSTODY RECORD 

BoLo FtELDS REQUIRED. PLEASE' CIRCLE REQUESTED ANALYSIS. 

89363 _j 

SAMPLING ...1 0 ..... ..... ~ 

D /T w o. "" "" - ~ "" ~ o ~ I - 1 ATE IME aJ :r i: "" g .::l ~ ~ ~ := ~ ;g 'f2 _ . Q - I I I • -1 I I 1 

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*IFCOMPOSITE tn U ffi ~- ffi ee '0" :z::;: ~eo ~6.....: ;::. ~ ..... 

I I ._ * >C ~ - ::!:: a,.a,_ :: ~ ~ ~ %. .,_: ,2 

NDICATE BOTH X -- ~- :=! ~ ~ - :! ::::!.. ~ "" .3 "' cr en ~ "-0 ~ CQ o '-0 o < ~ ~:;::; z: ~ - o _ ..... ~ 

SAMPLEI.D. I START&FINISH ~ ""' !"E .... - ,.; 0000 ::: =~ 0 ~ -~ ~ ~ "" Jf 

/TIME 

5-J~-/0 

PROJECT MANAGER ~ )Je("ner 

( Ot1PANY: s-:s L).tiyb 0 It\. . :l:acJ I I r::p:: 

ADDREss: 2- o Eo LLt--a r-y Sf-. 

CiTY: c() )\. c...o r J STATE: N B: ZIP: 0 3 ~0 I 

PHONE: (p D;,- Z...2....~ -JCJ ou Exr.: _ __ _ 

fAX: --r--:----r---=,.-----.-- - - .,....-------

E-MAIL: kcll)..bol;(o/ ~ r-(1 hC:.::>d • tam,. 

SITE NAHE: L. T~ 

PROJECT ~ q. 9 I 0 lSTATE: ~ MA ME VT OTHER: _______ _ 

REGUlAT ?ROGRAH: NPDES: RGP POTW STORHWATER OR 

GWP, OIL fUND, BROWNFIELD OR OTHER: _______ _ 

D AT E NEEDED: __ :S__...!. +d..l<l.------

QA/QC 

REPORTING lEVEl 

A@ 

OR 

MAMCP 

REPORTING OPTIONS 

PREUH(ii)oR NO 

C I IF YEs: fAx o@ 

TEtiP. _~=-+ ~ 

ICE? 

EQUIS 

QUOTE #: ....... ~ 

PO #: V!f{A:f{fA<- rn-c ( - ·l' - ·- ' ..,. - /' r. -

No 

METALS: 8 RCRA 13 PP FE, MH PB, Cu 

OTHER Mmts: A ( l'e, P b 1 fJ /, Zrt 

' 

DISSOLVED METAL.I fiElD fiLTERED? ~ NO 

NOTES: (IE: SPECIAl 0ETEOION LIHITS, BILLING IHFO,IF DIFFERENT) * Cvs-k,IV--'-' -tr?e-~v-'-S.~Q 

J--o~.- ~(o e h"'iJ 

)_.itA-10 ~ ftA..L-jA I~-

i'r b),,l,o SITE HISTORY: ________ _ _ _ 

SUSPEUED (OHTAHIHATION: ___ ____ _ 

~ FIElD READINGS: _____ _____ _ eastern analyHcal, ;nc..: - - . - = n _ 

, jlrcji.·fsiannl ittbur,tlmy Jt'rtJiCQ 

25 CHENELL DRIVE I CONCORD. NH 0330 1 I TEL: 603.228.05251 ).800.287.0525 I FAX: 603.228.459 1 I E-MAIL: CUSTOMER_SERVICE@EAILABS.C0t1 1 WWW.EAILABS.C0t1 

(WHITE: ORIGINAL GREEN: PROJECT MANAGER) 
~~ eastem analytical, inc. ------~~t--------------------------------------p-r-o~/~(-L,-.,~o-n-.z~L-l~a~h-o~ra~t-o_r_;-,~--------

RECEIVED 

Scott Nerney 

Sanborn, Head & Associates, Inc. (NH) JUN 14 2010 

20 Foundry Street 

Concord NH 03301 SHA - Concord 

Subject: Laboratory Report 

Eastern Analytical, Inc. ID: 89366 

Client Identification: LTG 1 2049.02 

Date Received: 5/20/2010 

Report revision/reissue: Revision, replaces report dated 6/2/1 0 

Revision information: Reporting Limits for Metals have been revised. 

Dear Mr. Nerney : 

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

with our ONQC 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. 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 to all EAI reports: 

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

< : "less than" followed by the reporting limit 

> : "greater than" followed by the reporting limit 

%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). 

The following information is contained within this report: Sample Conditions summary, Analytical Results/Data, Quality 

Control data (if requested) and copies of the Chain of Custody. This report may not be reproduced except in full, 

without the the written approval of the laboratory. 

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 Date #of pages (excluding cover letter) 

Eastern 1 muyucal, Inc. 1.1 \. "fwnEh 1 ''IVc,l.. .• on ord, NH 0~ 3l'i www.eai labs.com n.t 60' u.M 1l5 I &'() li:\1 O'i25 fAX 60) llll- tS II 
SAMPLE CONDITIONS PAGE 

Eastern Analytical, Inc. ID#: 89366 

Client: Sanborn, H ead & Associates, Inc. (NH) Client Designation: LTG I 2049.02 

Temperature upon receipt (°C): 2.4 Received on ice or cold packs (Yes/No): y 

Date Date Sample % Dry 

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

89366.01 MW-2R I 05-19-10 5120110 5/19/10 aqueous Adheres lo Sample Acceptance Policy 

89366.02 Dup-21 05-19-10 5120/10 5119110 aqueous Adheres to Sample Acceptance Policy 

89366.03 TB-2/ 05-19-10 5120110 5110110 aqueous Adheres to Sample Acceptance Policy 

Bubble in one vial 

89366.04 SW-21 05-19-10 5120110 5119/10 aqueous Adheres to Sample Acceptance Policy 

89366.05 SW-11 05-19-10 5120110 5119110 aqueous Adheres to Sample Acceptance Policy 

89366.06 Dup-1 I 05-19-10 5/20/10 5119/10 aqueous Adheres to Sample Acceptance Policy 

Samples were properly preseNed 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 
llVlAI . LAB ORA TORY REPORT 

Eastern Analytical, Inc. 10#: 89366 

Client: Sanborn, Head & Associates, Inc. Client Designation: LTG I 2049.02 

(NH) 

Sample ID: MW-2R I 05-19-10 Dup-2/ T8-2/ 

05-19-10 05-19-10 

Lab Sample ID: 89366.01 89366.02 89366.03 

Matrix: aqueous aqueous aqueous 

Date Sampled: 5/19/10 5/19/10 5/10/10 

Date Received: 5/20/10 5/20/10 5/20/10 

Units: ug/1 ug/1 ug/1 

Date of Analysis: 5/26/10 5/26/10 5/26/10 

Analyst: VG VG VG 

Method: 82608 SIM 82608 SIM 82608 SIM 

Dilution Factor: 1 

1,4-Dioxane < 1 < 1 < 1 

4-Bromofluorobenzene {surr) 102 %R 102 %R 103 %R 

Toluene-d8 {surr) 101 %R 100 %R 100 %R 

eastern analytical, inc. www.eailabs.com Phone: (603) 228-0525 2 
IAAO;l. ____ o_c_R_E_P_o_RT ________ _ 

Eastern Analytical, Inc. 10#: 89366 

Client: Sanbo rn, Head & Associates, Inc. Client Designation: LTG 1 2049.02 

Parameter Name Blank LCS LCSD Analysis Date Units Limits RPD Method 

1 ,4-Dioxane < 1 5 (95 %R) 4 (79 %R) (18 RPD) 5/26/2010 ug/1 70- 130 20 82608 

4-8romofluorobenzene (surr) 103 %R 103 %R 1 02 %R 5/26/2010 % Rec 70 - 130 50 82608 

Toluene-dB (surr) 101 %R 100 %R 101 %R 5/26/2010 % Rec 70- 130 50 82608 

Samples were extracted and analyzed within holding time limits. 

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. 

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

There were no exceptions in the analyses, unless noted. 

* Flagged analyte recoveries deviated from the QNQC limits. 

eastern analytical, inc. www. eailabs. com Phone: (603) 228-0525 3 
LAB ORA TORY REPORT 

Eastern Analytical, Inc. ID#: 89366 

Client: Sanborn, Head & Associates, Inc. Client Designation: LTG 1 2049.02 

(NH) 

Sample ID: SW-2 I 05-19-10 SW-1 I 05-19-10 Dup-1 I 

05-19-10 

Lab Sample ID: 89366.04 89366.05 89366.06 

Matrix: aqueous aqueous aqueous 

Date Sampled: 5119110 5119110 5119110 

Date Received: 5120110 5120110 5120110 

Solids Suspended 49 41 250 

eastern analytical, inc. www. eailabs. com 

Analysis 

Units Date Time Method Analyst 

mgiL 5125110 8:11 25400 JCC 

Phone: (603) 228-0525 4 
QC REPORT 

Eastern Analytical, Inc. ID#: 89366 

Client: Sanborn, Head & Associates, Inc. Client Designation: l TG 1 2049.02 

Date of 

Parameter Name Blank LCS LCSD Units Analysis Limits RPD Method 

Solids Suspended <5 100 (100 %R) 94 (94 %R) (6 RPD) mg/L 5/25/1 0 90 - 110 20 

Samples were analyzed within holding times unless noted on lhe sample results page. 

Instrumentation was calibrated in accordance with the method requirements. 

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

The associated matrix spikes and/or Laboratory Control Samples met the above stated criteria. 

Exceptions to the above statements are flagged or noted above or on the QC Narrative page. 

• Flagged analyle recoveries deviated from the QAJQC limits. 

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

25400 

5 
LAB ORA TORY REPORT 

Eastern Analytical, Inc. 10#: 89366 

Client: Sanborn, Head & Associates, Inc. (NH) Client Designation: LTG 1 2049.02 

Sample 10: MW-2R I 05-19-10 Dup-2/ 

05-19-10 

Lab Sample 10: 89366.01 89366.02 

Matrix: aqueous aqueous 

Date Sampled: 5/19/10 5/19/10 Analytical Date of 

Date Received: 5/20/10 5/20/10 Matrix Units Analysis Method Analyst 

Arsenic < 0.001 < 0.001 AqTot mg/L 5/21/10 6020 OS 

Sample ID: SW-2/ 05-19-10 SW-1 / Oup-1 I 

05-19-10 05-19-10 

Lab Sample 10: 89366.04 89366.05 89366.06 

Matrix: aqueous aqueous aqueous 

Date Sampled: 5/19/10 5/19/10 5/19/10 Analytical Date of 

Date Received: 5/20/10 5/20/10 5/20/10 Matrix Units Analysis Method Analyst 

Aluminum 0.05 < 0.05 < 0.05 AqTot mg/L 5/21/10 6020 OS 

Aluminum < 0.05 < 0.05 <0.05 AqOis mg/L 5/21/10 6020 OS 

Iron 12 0.16 0.23 AqTot mg/L 5/21/10 6020 OS 

Iron 8.9 < 0.05 < 0.05 AqOis mg/L 5/21/10 6020 OS 

Lead < 0.0005 < 0.0005 < 0.0005 AqTot mg/L 5/21/10 6020 OS 

Lead < 0.0005 < 0.0005 < 0.0005 AqOis mg/L 5/21/10 6020 OS 

Nickel 0.008 0.001 0.001 AqTot mg/L 5/21110 6020 OS 

Nickel 0.008 0.001 0.001 AqOis mg/L 5/21/10 6020 OS 

Zinc 0.012 0.009 < 0.005 AqTot mg/L 5/21/10 6020 OS 

Zinc 0.010 < 0.005 < 0.005 AqOis mg/L 5/21/10 6020 OS 

Total Hardness (as CaC03) 130 48 46 AqTot mg/L 5/21/10 6020 OS 

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

6 
QC REPORT 

Eastern Analytical, Inc. 10#: 89366 

Client: Sanborn, Head & Associates, Inc. (NH) Client Designation: LTG I 2049.02 

Date of 

Parameter Name Blank LCS LCSD Units Analysis Limits 

Aluminum < 0.05 12(108 %R) mg/L 5/21 /10 80- 120 

Arsenic < 0.001 1.0(102%R) mg/L 5/21/10 80- 120 

Iron < 0.05 11 (99 %R) mg/L 5/21110 80 - 120 

Lead < 0.0005 1.0 (100 %R) mg/L 5/21/10 80- 120 

Nickel 0.001 0.94 (94 %R) mg/L 5/21/10 80- 120 

Zinc < 0.005 0.89 (89 %R) mg/L 5/21/10 80- 120 

MS/MSO MS/MSD Date of 

Parameter Name Parent 10 Parent Matrix Spike MSO Units Analysis Limits 

- ----

Aluminum 89317.02 < 0.05 12 (112 %R) 12 (111 %R) (1 RPO) 

Arsenic 89317.02 0.013 1.1 (107 %R) 1.1 (106 %R) (1 RPD) 

Iron 89317.02 1.3 12 (98 %R) 12 (98 %R) (0 RPD) 

Lead 89317.02 < 0.0005 0.94 {94 %R) 0.95 (95 %R) (1 RPD) 

Nickel 89317.02 0.001 1.1(105%R) 0.98 (98 %R) (7 RPD) 

Zinc 89317.02 < 0.005 1.0 (99 %R) 0.97 (97 %R) (2 RPD) 

Samples were analyzed within holding times unless noted on the sample results page. 

Instrumentation was calibrated in accordance with the method requirements. 

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

The associated matrix spikes and/or Laboratory Control Samples met the above stated criteria. 

Exceptions to the above statements are flagged or noted above or on the QC Narrative page. 

• Flagged analyte recoveries deviated from the QA/QC limits. 

mg/L 5/21/10 75-125 

mg/L 5/21/10 75-125 

mg/L 5/21/10 75-125 

mg/L 5/21/10 75-125 

mg/L 5/21/10 75-125 

mg/L 5/21/10 75-125 

RPO 

20 

20 

20 

20 

20 

20 

RPO 

20 

20 

20 

20 

20 

20 

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

Method 

6020 

6020 

6020 

6020 

6020 

6020 

Method 

6020 

6020 

6020 

6020 

6020 

6020 

7 
Page / of / 

CHAIN-OF-CUSTODY RECORD 

BoLD FtELDS REQUiRED. PLEASE CiRCLE REQUESTED ANALYSIS. 

E 89366 J 

SAMPLING 

DATEITtME "' l: X ~- @~ ~ - = ~ 

w :::~co ~ 0 ~ 

. ~ -~. ..... 

*IF CoMPOSITE, w 0 a< e; ~ ~ - e:; ~ :2 ~ 0 ~ :!i ~ CQ ~ci' .__: ~ u ~""'o ~ '-' ~ =::s: ~ 

.... .. ~ ~ % 

~ ~ X: "- ~ "" ;; Q :z ,_: C> 

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Town Garage/Radio Beacon Site / Attachment E 

2049.02 \ ATT_E-DQA.docx

August 25, 2010

Page 1 

ADDITIONAL GROUNDWATER AND SURFACE WATER MONITORING

DATA QUALITY/DATA USABILITY ASSESSMENT

SHA performed an assessment of data quality and usability as described in SHA’s December 

2009 Quality Assurance Project Plan1

 (QAPP; refer to attached tables). 

x A review of field equipment calibration/calibration check data sheets indicated field 

instruments calibrated correctly and maintained calibration throughout the day. 

x A review of field documentation indicated field Standard Operating Procedures (SOPs) 

were followed appropriately.

x A review of the analytical data packages provided by the laboratory indicated they were 

complete and laboratory Quality Control (QC) met applicable criteria, the trip blank was 

clean, and applicable reporting limits were met.

x A review of the field duplicate pair (SW-1/05-19-10 and Dup-1/05-19-10) indicated a 

relative percent difference (RPD) of greater than 30 percent for total suspended solids 

and iron for the unfiltered aliquot indicating sample non-homogeneity. This is probably 

the result of light rain that day, along with a water column only 0.30 feet thick. The 

results for the primary and duplicate samples for total suspended solids and unfiltered 

iron should be considered estimated.

Based on the data quality/data usability assessment, the data are of sufficient quality for their 

intended purpose (i.e., comparison to applicable groundwater2 and surface water standards3

),

with the limitations noted above.

S:\CONDATA\2000s\2049.02\originals\2010 Annual Report\ATT-E\ATT_E-DQA.docx

1

 SHA, December 2, 2009, Quality Assurance Project Plan and Work Plan for Groundwater and Surface Water 

Monitoring, Town Garage/Radio Beacon Site, Londonderry, New Hampshire, NHDES Site No. 198509001. The 

QAPP was initially submitted to USEPA in August 2009. The QAPP was subsequently revised in December 

2009 based on comments by USEPA, and was approved on April 5, 2010.

2 The applicable groundwater standards for the site are the New Hampshire Department of Hampshire 

Environmental Services (NHDES) Ambient Groundwater Quality Standards (AGQS; which are based on federal 

Maximum Contaminant Levels [MCLs]) and the NHDES Contaminated Sites Risk Characterization and 

Management Policy (RCMP) GW-1 Groundwater Standards. 

3

 The applicable surface water standards are the Water Quality Criteria (WQC) as defined in NHDES Env-Wq 

1703.21.
Review of Analytical Reporting Limits, Trip Blank, and Duplicate % RPD – Groundwater

Town Garage/Radio Beacon Site

Londonderry, New Hampshire

NHDES Site No. 198509001

S:\CONDATA\2000s\2049.02\originals\2010 Annual Report\ATT-E\Att E-DQA Tables.xlsx Page 1 of 1 Sanborn, Head & Associates, Inc.

Concentrations in μg/l.

TB-2 / 05-19-10 MW-2R

05/19/10 05/19/10 05/19/10 Dup. Duplicate

% RPD

Dioxane (1,4-) 3 † <1 <1 <1 –

Arsenic 10 NA <1 <1 –

GW-2 Analyte GW-1

(AGQS)

Notes:

1. Samples were collected by SHA on the date indicated and analyzed by Eastern Analytical, Inc. of Concord, New

Hampshire for 1,4-dioxane United States Environmental Protection Agency (USEPA) Method 8260B in selective ion

monitoring (SIM) mode, and unfiltered arsenic by USEPA Method 6020A.

2. Concentrations are presented in micrograms per liter (μg/l) which are equivalent to parts per billion (ppb).

3. "<" indicates the analyte was not detected above the indicated laboratory reporting limit.

4. "GW-1" and "GW-2" Groundwater Standards are from the New Hampshire Department of Environmental

Services (NHDES) Contaminated Sites Risk Characterization and Management Policy (RCMP) (January 1998, with

2000 through 2007 revisions/addenda). GW-1 Groundwater Standards are equivalent to the Ambient Groundwater

Quality Standards (AGQSs) promulgated in Env-Or 600 (July 2008). The AGQS/GW-1 Groundwater Standards are

intended to be protective of groundwater as a source of drinking water. The GW-2 Groundwater Standards apply to

groundwater as a potential source of indoor air contamination.

5. "†" indicates the RCMP lists as not currently available.

"NA" indicates the RCMP lists as not applicable.

6. Duplicate % RPD indicates the relative percent difference as calculated by the following formula:

| Result1 - Result2 | / ((Result1 + Result2) / 2) * 100

7. "–" indicates the RPD can not be calculated because one or both of the results are non-detect.

8. Refer to SHA's December 2009 Quality Assurance Project Plan for further details on data quality and data 

usability.
Review of Analytical Reporting Limits and Duplicate % RPD – Surface Water

Town Garage/Radio Beacon Site

Londonderry, New Hampshire

NHDES Site No. 198509001

S:\CONDATA\2000s\2049.02\originals\2010 Annual Report\ATT-E\Att E-DQA Tables.xlsx Page 1 of 1 Sanborn, Head & Associates, Inc.

Concentrations in μg/l

SW-1 

(Wetland Surface Water)

SW-2 

(Hillslope Ponded

Drainage Water)

Thornton 

Road 

Reference

Acute Chronic 5/19/2010 05/19/10

Dup.

Duplicate

% RPD 5/19/2010 5/19/2010

Unfiltered

Aluminum 750 87 <50 <50 – 50 50

Iron NS 1,000 160 230 36% 12,000 70

Lead 14 † 0.54 † <0.5 <0.5 – <0.5 <0.5

Nickel 144.9 † 16.1 † 1 1 0% 8 <1

Zinc 36.2 † 36.5 † 9 <5 – 12 <5

Total Hardness (as CaCO3) 48,000 46,000 4% 130,000 26,000

Total Suspended Solids 41,000 250,000 144% 49,000 18,000

Filtered

Aluminum 750 87 <50 <50 – <50 <50

Iron NS 1,000 <50 <50 – 8,900 <50

Lead 14 † 0.54 † <0.5 <0.5 – <0.5 <0.5

Nickel 144.9 † 16.1 † 1 1 0% 8 1

Zinc 36.2 † 36.5 † <5 <5 – 10 8

Analyte

Water Quality 

Criteria

for Fresh Water

Aquatic Life

Notes:

1. Samples collected on in 2010 were collected by SHA personnel and submitted to Eastern Analytical, Inc. of Concord, New Hampshire

for analysis of filtered and unfiltered metals by USEPA Method 6020A, total hardness as CaCO3 by USEPA Method 6020A and Standard

Method 2340B, and total suspended solids by Standard Method 2540D.

2. Results are presented in micrograms per liter (μg/l) which are equivalent to parts per billion (ppb).

"<" indicates the analyte was not detected above the listed laboratory reporting limit.

3. "Water Quality Criteria" refers to the New Hampshire Water Quality Criteria for Toxic Substances as defined in Env-Wq 1703.21 (May

2008).

"Acute" refers to the acute criteria for the protection of aquatic life in fresh water.

"Chronic" refers to the chronic criteria for the protection of aquatic life in fresh water.

"†" Refer to Env-Wq 1703.21 for additional notes for these criteria.

4. No detected concentrations exceed the Water Quality Criteria.

5. Duplicate % RPD indicates the relative percent difference as calculated by the following formula:

| Result1 - Result2 | / ((Result1 + Result2) / 2) * 100

6. "–" indicates the RPD can not be calculated because one or both of the results are non-detect.

Shaded values have RPDs greater than 30%.

7. Refer to SHA's December 2009 Quality Assurance Project Plan for further details on data quality and data usability.