## COMMITMENT 

# & INTEGRITY DRIVE RESULTS 41 Hutchins Drive Portland, Maine 04102 www.woodardcurran.com T 800.426.4262 T 207.774.2112 F 207.774.6635

July 21, 2010
Mr. Terry Connelly U.S. ENVIRONMENTAL PROTECTION AGENCY USEPA Region 1 1 Congress Street Suite 1100 (Mail Code HBT) Boston, MA 02114-2023 Re: O'Connor Company Superfund Site Management of Migration Sampling and Analysis Annual Report, April 2010 Dear Terry: Enclosed is one copy of the Sampling and Analysis Annual Report for the April 2010 Groundwater Monitoring Program (MOM) at the O'Connor Site. CMP and Woodard & Curran completed the spring 2010 environmental monitoring on April 21-22, 2010. Two copies of the enclosed report have been forwarded to Claudia Sait of the MEDEP, and one copy has been forwarded to Richard Smith at Viacom, Inc. The next round of MOM sampling is scheduled for April 2011. If you have any questions about the enclosed report, please call me.

Sincerely,
WOODARD & CURRAN INC.

Chris Miller Project Manager
CM/LEM 222350.02
Enclosure cc: R. Koster (CMP – 1 copy) C. Sait (MEDEP – 2 copies) R. Smith (1 copy) File (1 copy)

# APRIL 2010 GROUNDWATER MONITORING
MANAGEMENT OF MIGRATION SAMPLING AND ANALYSIS ANNUAL REPORT



# 222350 Central Maine Power Augusta, Maine 

# April 2010 

# woodardcurran.com
COMMITMENT & INTEGRITY DRIVE RESULTS

# MANAGEMENT OF MIGRATION SAMPLING AND ANALYSIS ANNUAL REPORT April 2010 Groundwater Monitoring
O’CONNOR SUPERFUND SITE Augusta, Maine

41 Hutchins Drive Portland, ME 04102 (207) 774-2112
www.woodardcurran.comCentral Maine Power (222350) i April 2010

MOM 2010 Annual Report 

# TABLE OF CONTENTS
SECTION PAGE NO. 

## Executive Summary.....................................................................................................................................ES-1
1. INTRODUCTION ......................................................................................................................................1-1 1.1 Purpose and Objectives.......................................................................................................................1-1 1.2 Summary of Previous Groundwater Investigations............................................................................1-1 

## 2. SAMPLING PROCEDURES....................................................................................................................2-1 2.1 Groundwater Purging and Sample Collection ....................................................................................2-1 2.2 Free Product Oil Monitoring.................................................................................................................2-2 

## 3. ANALYTICAL RESULTS.........................................................................................................................3-1 3.1 Groundwater Results from the MOM Monitoring Program ................................................................3-1 3.2 Comparison with Previous MOM Results ...........................................................................................3-4 

## 4. CONCLUSIONS AND RECOMMENDATIONS ......................................................................................4-1
5. REFERENCES .........................................................................................................................................5-1
6. LIST OF ACRONYMS..............................................................................................................................6-1



# LIST OF TABLES
TABLE PAGE NO. Table 1: MOM Monitoring Well Analytical Results............................................................................................3-3



# APPENDICES Appendix A: Long-Term Monitoring Site Plan Appendix B: Water Levels and PID Readings Appendix C: Field Record Data Sheets Appendix D: Laboratory Information Appendix E: Inferred Overburden Groundwater Contour Map Appendix F: Summary of oil Thickness In TWA ii Wells Appendix G: Laboratory ReSults Report Appendix H: Time Series Plot-1,4 DichlorobenzeneCentral Maine Power (222350) ES-1 April 2010

MOM 2010 Annual Report 

# EXECUTIVE SUMMARY

This report presents the results of the sampling and analysis of the April 2010 annual groundwatermonitoring program conducted at the O’Connor Superfund Site (Site) in Augusta, Maine. Representatives from Central Maine Power Company (CMP) and Woodard & Curran (W&C) performed this work on April 21-22, 2010. The sampling was conducted in accordance with the sampling methodology contained in the O’Connor Site Management of Migration (MOM) Groundwater Monitoring Program Sampling and Analysis Plan (SAP) dated December 1996 (Revision 4) with amendments. The O’Connor Site was the former location of salvage processes, including stripping and recycling transformers that contained polychlorinated biphenyl (PCB)-laden oil. As a result of uncontrolled releases of PCBs, lead, carcinogenic polynuclear aromatic hydrocarbons (cPAHs), and volatile organic compounds (VOCs) at the Site, the Site was placed on the National Priorities List. Site remediation conducted to date has included the installation and operation of a vacuum enhanced product recovery (VER) system (1996-1997, 2001-2004, and 2006), Source Control (1996-1997), and ongoing passive oil recovery from observation wells in the former transformer work area II (TWA II). Analytical results for this sampling event and previous sampling events are summarized in this report. The groundwater sampling and analysis results obtained during this sampling round will be used to supplement previous groundwater data collected at the Site. This report compares the April 2010 groundwater quality data to the groundwater performance standards specified in the 2002 Record of Decision (ROD) Amendment and 2003 Statement of Work (SOW). These performance standards are chemical-specific Applicable or Relevant and Appropriate Requirements (ARARs) based on United States Environmental Protection Agency (USEPA) Maximum Contaminant Levels (MCLs) and Maine Maximum Exposure Guidelines (MEGs). The purpose of these comparisons is to evaluate the level of compliance with the clean up standards for the target compounds. A review of the results of the April 2010 sampling and the historic groundwater data at the O’Connor Site has led to the following conclusions and recommendations:

 There were no exceedances of groundwater performance standards for the eight VOCs analyzed for in the MOM monitoring wells in April 2010. VOCs were detected in four out of nine wells sampled and were well below the groundwater performance standards.

 The concentrations of 1,4-dichlorobenzene in groundwater in the MOM wells are trending downward.

 PCBs were not detected in MOM monitoring wells in April 2010. The amount of oil removed from the wells using the VER system has decreased steadily over time. In the fall of 2006 the VER system was shutdown because the rate of oil recovery using passive recovery was equal to or greater than with the VER system. The passive oil recovery program will continue on a quarterly basis.Central Maine Power (222350) 1-1 April 2010

MOM 2010 Annual Report 

# 1. INTRODUCTION

1.1 PURPOSE AND OBJECTIVES This document is the annual Sampling and Analysis Report for the MOM component of the Remedial Design/Remedial Action at the Site located in Augusta, Maine. The requirement for a long-term groundwater quality-monitoring program was established by the USEPA in the ROD, December 27, 1989 for the Site. In 2002, a ROD Amendment was signed that revised the original remedy. The ROD Amendment established a waiver of ARARs, federal and state drinking water standards, for a limited portion of the Site (including the TWA II Area) on the basis of technical impracticability. The ROD Amendment also revised the ARARs to include a total of eight VOCs and PCBs. The TI waiver applies to these ARARs within the TI zone of the Site, shown in Appendix A. The 2003 SOW incorporates the revised ARARs as groundwater performance standards. The primary objective of this report is to document the April 2010 groundwater sampling event and present the analytical results. Work was performed in accordance with the MOM SAP dated December 1996 (Revision 4) with amendments. This report satisfies the submittal requirements under Section I.3.b. (1)(c) of the revised SOW dated October 20, 1994. There were no additional submittal requirements in the 2003 SOW. W&C assisted CMP in implementing the MOM water quality-monitoring program. Groundwater samples were collected from the nine MOM monitoring wells listed below. The locations of these wells are shown in Appendix A. Groundwater Monitoring Wells

MW-104B MW-501 MW-507A MW-106A MW-502 MW-508B MW-106B MW-503 OW-201B

The groundwater data from these samples provide current groundwater quality data for the ongoing MOM monitoring program. The April 2010 groundwater quality data has been compared with data collected from previous groundwater monitoring events. This groundwater data set will be used to identify if any areas of the Site are not currently meeting groundwater performance standards. In addition, this data will be used to identify groundwater quality trends for each specific sampling location.


## 1.2 SUMMARY OF PREVIOUS GROUNDWATER INVESTIGATIONS Two significant groundwater migration pathways have been identified at this Site during previous studies. The till/bedrock interface is the primary migration pathway of contaminants. The secondary migration route is within the fractures in the bedrock. The monitoring wells with an “A” designation and MW-501, MW-502 and MW-503 monitor the primary till/bedrock migration pathway; whereas the monitoring wells with a “B” designation monitor the fractured bedrock aquifer. For a more detailed discussion of the current hydrogeologic understanding of the Site, refer to Section 2.4 of the Draft Proposed Final MOM Remedy report (12/97) or the June 2002 TI waiver Evaluation Report.Central Maine Power (222350) 1-2 April 2010

MOM 2010 Annual Report 

## A comprehensive evaluation of the available groundwater analytical data from the Site was completed in August 1997. The results of the MOM comprehensive evaluation indicated that the contaminants were not continuing to migrate in groundwater and the contaminant levels in groundwater were not increasing. PCB’s had not been detected in any of the MOM monitoring wells from May 1996 through September 1997 and, therefore; PCBs were not believed to be mobile in the groundwater flow system. Continued monitoring has proven that no PCBs are migrating in the groundwater monitored in the MOM monitoring program. The groundwater data suggested that contaminants are not moving in the principle till/bedrock migration pathway due to low hydraulic conductivity. For a complete summary of historic groundwater analytical results, refer to the MOM Comprehensive Evaluation (June 1997). Additionally, the Draft Proposed Final Management of Migration Remedy report also summarizes the existing contaminant distribution at the Site. Two groundwater-monitoring wells (MW-507A and MW-508B) were installed at the Site southeast of TWA-II in October 1997. The location of these two wells is shown in Appendix A. These wells were installed to evaluate the groundwater within the area of the previously identified bedrock trough. These two wells monitor different depth, zones (overburden and bedrock) at the same location. Monitoring well MW-507A is a shallow well and is screened (approximately 10-20 feet below the ground surface) in the till soils immediately above the bedrock surface. Monitoring well MW-507A is constructed with a bentonite seal above the screen to prevent the vertical migration of surface water into the well. Monitoring well MW-508B is a bedrock well screened 32-42 feet below the top of the PVC riser to monitor the groundwater in the bedrock flow system. The depth of the screen zone in MW-508B was chosen based upon an inspection of the bedrock cores collected during the drilling. MW-508B is constructed with a bentonite chips and bentonite grout seal above the screen so that only the bedrock groundwater will be available to recharge the well during purging and sampling. The groundwater recharge to this well is very slow indicating a bedrock aquifer with low hydraulic conductivity. Three monitoring wells, MW-509A, MW-510A and MW-511A and a piezometer MW-512A, were installed north and west of TWA-II in July 2001. These wells were installed to provide additional monitoring points for groundwater quality and groundwater elevation in the MOM monitoring network. Piezometer MW-512A was installed to gather additional groundwater elevation data from the site. These wells and piezometer were decommissioned on September 2, 2008. Decommissioning activities are detailed in the Monitoring Well Decommissioning Summary (October, 2008).Central Maine Power (222350) 2-1 April 2010

MOM 2010 Annual Report 

# 2. SAMPLING PROCEDURES
During the April 2010 sampling event, groundwater samples were collected from the nine MOM monitoring wells at the Site. Prior to the sampling activities each day, a health and safety meeting was conducted for the field personnel. Health & Safety topics specific to the O’Connor site were presented and discussed. The health and safety meetings are documented in the field notes for each work day. The April 2010 monitoring event was completed without a health and safety incident.


## 2.1 GROUNDWATER PURGING AND SAMPLE COLLECTION The MOM groundwater monitoring wells were purged and sampled using low-flow purging and sampling techniques on April 21-22, 2010. Three MOM monitoring wells (MW-104B, MW-106A, and OW-201B) were sampled with Grundfos Redi-Flo2 dedicated submersible pumps. The other MOM monitoring wells were sampled with a Masterflex or Geopump peristaltic pump and dedicated tubing. The depth to groundwater and total depth of each well were measured at each well. The depth to ground water and ground water elevations are included in Appendix B. Turbidity, pH, specific conductance, dissolved oxygen and temperature measurements were collected from each well at three to five minute intervals during well purging. Field parameters with the exception of turbidity were measured in a YSI 600XL multi-meter with flow-through cell. Turbidity measurements were made with a Hach turbidity meter. The field parameter instruments were calibrated prior to use on each day of sampling. Calibration checks were conducted a minimum of two (2) times per day during the sampling activities. After determining that the groundwater elevation stabilization and field parameter stabilization criteria had been achieved according to the stabilization criteria outlined in the SAP, samples were collected for VOC and PCB laboratory analysis. The samples were collected at the same flow rate used during purging. The flow cell was disconnected prior to collecting the sample. The field data sheets are included in Appendix C. A duplicate sample, MW-507AD, was collected from monitoring well, MW-507. A matrix spike and matrix spike duplicate, MW-106BMS and MW-106BMSD were collected from MW-106B. Other quality control samples included a trip blank, a field blank (FB-1) and an equipment blank. All of the samples were stored in a cooler at approximately 4-6 degrees Celcius from the time of sample collection until delivery to the laboratory. Information concerning the sample custody and sample analysis is included in Appendix D. There were no PID readings collected during the April 2010 sampling event. The depth to groundwater measurements were made prior to the purging of the wells and during the well purging. The depths to groundwater measurements are included in the field data record sheets and in Appendix B. An inferred overburden groundwater contour map has been produced for the shallow groundwater aquifer from the April 2010 groundwater elevation data. The inferred overburden groundwater contour map shows generally south-eastward groundwater flow. The map does not show small variations in groundwater flow due to a limited number of monitoring points. The April 2010 overburden groundwater contour map is included in Appendix E.Central Maine Power (222350) 2-2 April 2010

MOM 2010 Annual Report 

## 2.2 FREE PRODUCT OIL MONITORING Four observation wells (OW-202B, OW-204B, OW-301B and OW-302B), the Phase II VER system recovery well (RW-101), and piezometer UM-1, are not included in the current MOM groundwater SAP. Prior to 2007, these wells were previously monitored monthly, and then quarterly for groundwater elevation and free product thickness as part of a MOM Free Product Oil (FPO) monitoring study. Two observation wells OW-204B and OW-301B and piezometer UM-1 are no longer monitored as they were decommissioned in September 2008. The results of the December 1997 to April 2010 FPO monitoring are shown in Appendix F. In March 2010, measurable oil (0.01 feet) was removed from OW-202B. Oil was not present in the other two wells (OW-302B and RW-101). Between 2006 (decommissioning of the VER system) and 2009, measurable oil was removed from the following wells:

 2009: 0.07 feet OW-202B

 2008: 0.02 feet OW-202B, RW-101

 2007: 0.15 feet OW-202B, RW-101 Prior to that, the last measurable amount of oil removed from RW-101 and OW-202B was 0.11 and 0.24feet, respectively, removed during the VER in 2006. Occasional skim coats of oil were observed at OW302B in 2007 and 2008. Prior to that, OW-302B has been clear of free product, as have the other decommissioned TWA-II wells OW-204B and OW-301B and piezometer UM-1. The VER system was operated on the four observation wells and RW-101 during the following periods: August to October 2001, August and September 2002, August to October 2003, August to September 2004 and August 2006. Oil thickness monitoring conducted at each well during the operation of the VER system showed that a decreasing quantity was recovered: approximately 20 gallons of oil were recovered by the VER in 2001, 7.4 gallons in 2002, 2.5 gallons in 2003, and about 0.3 gallons in 2004 and 2006. The VER process recovered a low volume of oil-product (0.29 gallons) in 2006. The amount of oil removed from the wells using the VER system has decreased steadily over time to minimal amounts. In December 2006, the VER system was decommissioned because the rate of oil recovery using passive recovery was equal to or greater than with the VER system. The passive oil recovery program is continuing on a quarterly basis.Central Maine Power (222350) 3-1 April 2010

MOM 2010 Annual Report 

# 3. ANALYTICAL RESULTS
The April 2010 groundwater field data records, which record the field parameter measurements and field observations during the groundwater purging as well as other information, are included in Appendix C. Copies of the chain-of-custody forms and other laboratory information are included in Appendix D. The analytical results of the April 2010 MOM groundwater-sampling event are included in Table 1 and the laboratory report is included in Appendix G. The data storage and data management functions are being conducted using GIS/KEY software. This program facilitates data management and data reporting. 1,3,5-trichlorobenzene had not been included in the original scope of work and was not included in the original VOC analyses prior to September 2004. From September 2004 to April 2010, there have been no detections of 1,3,5-trichlorobenzene in groundwater from any of the monitoring well samples collected. This compound will continue to be included in the MOM monitoring in future sample events.


## 3.1 GROUNDWATER RESULTS FROM THE MOM MONITORING PROGRAM Groundwater clean-up standards established in the 1989 ROD include total PCBs at 0.5 ug/L, benzene at 5 ug/L, and 1,4-dichlorobenzene at 27 ug/L. The 2002 ROD Amendment incorporated the Maine MEGs for PCBs of 0.05 ug/L, and chemical-specific ARARs based on USEPA MCLs and MEDEP MEGs for additional VOCs. These are established as groundwater performance standards in the 2003 SOW and are listed in Table 1. The results of the April 2010 water quality monitoring indicate:

 PCBs were not detected at any MOM monitoring wells. The practical quantitation limit (detection limit) for PCBs was lowered from 0.1 to 0.05 ug/L, to be able to detect PCBs down to the Maine MEG of 0.05 ug/L.

 Benzene was not detected at any MOM monitoring wells.

 There were no exceedances of the performance standard for 1,4-dichlorobenzene (27 ug/L) in MOM monitoring wells in April 2010. 1,4-dichlorobenzene was detected below the performance standard in groundwater samples collected from three monitoring well locations; MW-104B, MW-507A and OW-201B, at concentrations of 15, 0.9 and 3 ug/L, respectively.

 1,3,5-trichloroenzene was not detected in the groundwater in the MOM monitoring wells in April 2010.

 Other target VOCs were detected including 1,2,3-trichlorobenzene in MW-104B and 106B; 1,2,4- trichlorobenzene in MW-104B and OW-201B; 1,2-dichlorobenzene in MW-104B, MW-507A and OW-201B; 1,3-dichlorobenzene in MW-104B, MW-507A and OW-201B; and chlorobenzene in MW-104B, MW-507A and OW-201B. Concentrations were well below associated performance standards in all samples.

 The individual VOC results in the groundwater from MW-106A, MW-501, MW-502, MW-503, and MW-508B, were all below the method quantitation limits. Quality control results associated with the April 2010 VOC and PCB data were reviewed to determine representativeness and usability. A Tier II validation procedure in which tabulated results are reviewed was used for this assessment. Based on the results of validation, qualifiers, if any, were added to sample concentrations to identify potential bias or false positive results.Central Maine Power (222350) 3-2 April 2010

MOM 2010 Annual Report 

## For VOCs, sample concentrations of 1,2,3-trichlorobenzene, 1,2,4-trichlorobenzene, 1,4-dichlorobenzene and chlorobenzene were qualified as estimated (J) at various wells including MW-104B, MW-106B, MW-507A and OW-201B because estimated values ranging from 0.4-0.9 ug/L were less than the method quantitation limit of 1 ug/L. Trip, field and method blank results were non-detect for all target VOCs indicating that there were no interferences from shipping and laboratory processing. All other quality control parameters were compliant; therefore, no sample qualifiers were applied to any other VOC results. Percent recovery of the surrogate decachlorobiphenyl (DCB) on one of two GC columns was below control limits of 30-150 in sample MW-502. The non-compliant percent recovery of DCB in this sample was 27, indicating a potential slight low bias. PCBs were not detected in sample MW-502, and since the recovery of DCB was within control limits on the second column, there is no impact on the sample data and the non-detected results for MW-502 were reported unqualified. Percent recoveries of the surrogate DCB on both GC columns were below control limits of 30-150 in samples MW-507A and MW-507AD. The non-compliant percent recoveries of DCB in these samples were 20, 23 and 14, 16, respectively, indicating a potential low bias. PCBs were not detected in samples MW-507A or 507AD. Therefore, the non-detects in samples MW-507A and MW-507AD were qualified as estimated (UJ). The closing calibration verification had a high response for Aroclor 1260 on channel A, as well as a high response for tetrachloro-m-xylene (TCX) on channel B. These responses resulted in % Differences (%D’s) that were outside method acceptance limits. Since the responses were acceptable on the confirmation channels, there is no impact on the sample data, and Aroclor 1260 results were reported unqualified. Overall, the quality control results for VOC and PCB analyses are compliant and indicate that the associated data are acceptable for monitoring groundwater conditions at the O’Connor Site.Central Maine Power (222350) 3-3 April 2010

MOM 2010 Annual Report 

## TABLE 1 SUMMARY OF MOM GROUNDWATER MONITORING RESULTS APRIL 2010, O’CONNOR SITE, AUGUSTA, MAINE
Sample Location Total PCBs 1,2,3-Trichlorobenzene 1,2,4-

Trichlorobenzene 1,3,5-

Trichlorobenzene 1,2-Dichlorobenzene 1,3-Dichlorobenzene 1,4-Dichlorobenzene Benzene Chlorobenzene (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) Groundwater Performance Standards 0.05 N/A 70 40 85 85 27 5 47

MW-104B <0.047 8 16 <1.0 3 5 15 <1.0 0.7 J MW-106A <0.047 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 MW-106B <0.047 0.4 J <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 MW-501 <0.047 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 MW-502 <0.049 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 MW-503 <0.047 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 MW-507AD <0.047 UJ <1.0 <1.0 <1.0 2 2 0.8 J <1.0 0.7 J MW-507A <0.047 UJ <1.0 <1.0 <1.0 2 2 0.9 J <1.0 0.8 J MW-508B <0.048 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 OW-201B <0.047 <1.0 0.4 J <1.0 6 6 3 <1.0 0.4 J EB-1 <0.047 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 FB-1 <0.047 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 TRIP BLANK N/A <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 Total Exceedances of Groundwater Performance Standards 0 0 0 0 0 0 0 0 0

NOTES: N/A = Non Applicable ND – Not Detected “J” denotes an estimated value less than the method quantition limit. “UJ” denotes an estimated non-detect. The analyte was not detected above the method quantition limit, and the the method quantition limit is considered estimated. “B” denotes analyte is found in the sample and the associated method blank. Performance Standards are chemical-specific ARARs based on USEPA MCLs and MEDEP MEGs as identified in Appendix II to Ammendment to O’Connor Consent Decree Remedial Design/Remedial Action 2003 Statement of Work.Central Maine Power (222350) 3-4 April 2010

MOM 2010 Annual Report 

## 3.2 COMPARISON WITH PREVIOUS MOM RESULTS There have been no PCBs detected in MOM monitoring wells since September 2005 and from 2002- 2005, PCB concentrations ranged from 0.06-0.91 ug/L. There have been no detections of the eight site-specific VOCs above groundwater performance standards since September 2004, and between 2002-2004 the only VOCs to exceed performance standards were 1,2-dichlorobenzene and 1,4-dichlorobenzene. There have been no exceedances of the performance standard for benzene (5 ug/L) in the MOM wells in the last eleven years. There has been a significant improvement in meeting the performance standard for 1,4-dichlorobenzene at the site. Concentrations of 1,4-dichlorobenzene in groundwater have been below the performance standard (27 ug/l) since September 2003, when the performance standard was exceeded at two MOM wells, MW-104B and OW-201B. Prior to December 1997, the concentration of 1,4-dichlorobenzene in OW-201B was in the range of 42-57 ug/L. Between March 1998 and October 2003, the 1,4-dichlorobenzene concentration at MW-201B decreased to 25-36 ug/L, except for 47 ug/L in May 2002. The concentration of 1,4-dichlorobenzene at OW-201B in 2004-2006 ranged from 8-24 ug/L, 8-13 ug/L in 2007-2009 and 3 ug/l in 2010. A time series plot showing the historic concentrations of 1,4-dichlorobenzene for several wells is shown in Appendix H and suggests that the concentration is decreasing. The 1,4-dichlorobenzene concentrations at MW-104B were relatively stable at 20-33 ug/L from December 1998 to September 2001 and the range was slightly higher at 28-44 ug/L between September 2002 and September 2003. The concentration of 1,4-dichlorobenzene at MW-104B in 2010 (15 ug/L) was consistent with historic results between 2004-2009 (3-20 ug/L). A time series plot showing the historic concentrations of 1,4-dichlorobenzene for several wells is shown in Appendix H. The VOC concentrations in groundwater at MW-106A and MW-106B have been relatively consistent over the past five years. The VOC results for MW-106A have been non-detect since April 2005. From April 2002-2005, the total VOC concentration at MW-106A decreased from 2 ug/L to less than the quantitation limit. The total VOC concentration at MW-106B has decreased from 22.7 ug/L in April 2002 to not detected above the quantitation limit. MW-106B flows under artesian conditions most of the year. MW-106A monitors the overburden aquifer at this location and flows under low artesian conditions during periods of high groundwater. In the area of MW-507A and MW-508B, historically the VOC concentrations have been higher in the overburden groundwater (MW-507A) than in the bedrock groundwater (MW-508B). For the April 2010 sampling event, the total VOC concentration at MW-507A was 4 ug/L and was non-detect at MW-508B. Monitoring well MW-507A is an overburden well located in a bedrock trough and screened in the till/bedrock surface migration pathway where contaminated groundwater from the former TWA source areas flows slowly in a southeasterly direction. These wells were placed at this location to monitor VOC concentrations in the primary, till/bedrock migration pathway (MW-507A) and the secondary bedrock migration pathway (MW-508B).Monitoring wells MW-501, MW-502 and MW-503, are shallow wells located down gradient of MW104B and OW-201B. Concentrations of VOCs at MW-501, MW-502 and MW-503 were non-detect in April 2010, which is consistent with historic results.Central Maine Power (222350) 4-1 April 2010

MOM 2010 Annual Report 

# 4. CONCLUSIONS AND RECOMMENDATIONS
The April 2010 groundwater-sampling event was conducted in accordance with the current SAP and Quality Assurance Project Plan (QAPP). The results of the April 2010 sampling and a review of historic groundwater data at the O’Connor Site has led to the following conclusions and recommendations:

 There were no exceedances of groundwater performance standards for the eight VOCs analyzed for in the MOM monitoring wells in April 2010. VOCs were detected in four out of nine wells sampled and were well below the groundwater performance standards.

 The concentrations of 1,4-dichlorobenzene in groundwater in the MOM wells are trending downward.

 PCBs were not detected in MOM monitoring wells in April 2010. Following operation of the VER system in the fall of 2006, it was decommissioned because the rate of oil recovery using passive recovery was equal to or greater than with the VER system. The passive oil recovery program will continue on a quarterly basis.Central Maine Power (222350) 5-1 April 2010

MOM 2010 Annual Report 

# 5. REFERENCES
United States of America v. F. O’Connor Company Superfund Site, et. al, U.S. District Court for the District of Maine (Amendment to Consent Decree) (September 23, 2003); Appendix II to Amendment to O’Connor Consent Decree Remedial Design/Remedial Action 2003 Statement of Work. United States Environmental Protection Agency (USEPA), 10/20/1994. Statement of Work (SOW); October. USEPA Region I EPA-NE Data Validation Functional Guidelines for Evaluating Organics Analyses, USEPA, 1996. USEPA, 9/2002. Record of Decision Amendment Operable Unit 2, F. O’Connor Company Superfund Site; September. Woodard & Curran (W&C), 6/1996. Management of Migration Groundwater Monitoring Program Sampling and Analysis Plan, Volume II of II, Quality Assurance Project Plan, Revision 3; June. W&C, 12/1996. Management of Migration Groundwater Monitoring Program Sampling and Analysis Plan, Volume I of II, Field Sampling Plan, Revision 4; December. W&C, 6/1997. MOM Comprehensive Evaluation; June. W&C, 12/1997. Draft Proposed Final Management of Migration Remedy; December. W&C, 10/6/2008. Monitoring Well Decommissioning Summary, O’Connor Company Superfund Site, Augusta, Maine; October 6.Central Maine Power (222350) 6-1 April 2010

MOM 2010 Annual Report 

# 6. LIST OF ACRONYMS ARARs Applicable or Relevant and Appropriate Requirements cPAHs carcinogenic polycyclic aromatic hydrocarbons EW extraction well FPO free product oil gpm gallons per minute MCLs Maximum Contaminant Level MEDEP Maine Department of Environmental Protection MEGs Maximum Exposure Guidelines ml/min milliliters per minute MOM Management of Migration MS matrix spike MSD matrix spike duplicate MW monitoring well OW observation well PCBs polychlorinated biphenyls PID photoionization detector ppb parts per billion QAPP Quality Assurance Project Plan ROD Record of Decision RPD relative percent difference RSD relative standard deviation SAP Sampling and Analysis Plan SOW Statement of Work TWA transformer work area ug/L micrograms per liter USEPA United States Environmental Protection Agency VER vacuum enhanced recovery VOA volatile organic analysis VOC volatile organic compound W&C Woodard & Curran

# APPENDIX A: LONG-TERM MONITORING SITE PLAN

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### APPENDIX A

# APPENDIX B: WATER LEVELS AND PID READINGSAPPENDIX B Groundwater Elevations and PID Readings

O'CONNOR SITE April 2010
Reference DTB DTW Water Stick-up PVC/Steel Diff. TVOC Well Head TVOC Ambient Comments Well ID Date Reference Elev. (MSL) (ft) (ft) Elev. (MSL) (ft) (ft) (ppm) (ppm) MW104B 07-Nov-86 Steel 213.47 44.47 19.77 193.70 1.17 NA NR NR

10-Nov-86 Steel 213.47 44.47 19.37 194.10 1.17 NA NR NR 13-Nov-86 Steel 213.47 44.47 17.67 195.80 1.17 NA NR NR 04-Feb-87 Steel 213.47 44.47 15.97 197.50 1.17 NA NR NR 27-28-Apr-87 Steel 213.47 44.47 13.77 199.70 1.17 NA NR NR 23-Jul-87 Steel 213.47 44.47 17.87 195.60 1.17 NA NR NR 30-Oct-87 Steel 213.47 44.47 14.87 198.60 1.17 NA NR NR 04-Dec-87 Steel 213.47 44.47 13.57 199.90 1.17 NA NR NR 17-Jun-91 Steel 213.47 NR 17.39 196.08 NR NR NR NR 15-Jul-91 Steel 213.47 NR 19.60 193.87 NR NR NR NR 19-Aug-91 Steel 213.47 NR 18.72 194.75 NR NR NR NR 2-3-Aug-92 Steel 214.91 NR 16.48 198.43 NR NR NR NR 19-21-Jan-93 Steel 214.91 NR -(1) NA NR NR NR NR 18-Nov-93 Steel 214.91 NR 16.24 198.67 NR NR NR NR 29-Nov-94 Steel 214.91 NR 14.80 200.11 NR NR NR NR 12-Dec-94 Steel 214.91 NR 14.26 200.65 NR NR NR NR 16-Oct-95 Steel 215.02 46.00 20.26 194.76 3.29 1.42 ND ND 23-Jan-96 Steel 215.02 46.30 13.73 201.29 2.73 1.15 ND ND DTB - Meter hit clay. 03-May-96 Steel 215.02 46.30 13.87 201.15 2.73 1.15 ND ND DTB - Meter hit clay. 10-Jul-96 Steel 215.02 48.60 16.00 199.02 2.60 1.09 0.2 ND 25-Sep-96 Steel 215.02 48.60 16.19 198.83 2.60 1.09 4.7 4.30 11-Dec-96 Steel 215.02 48.60 13.50 201.52 2.60 1.09 2.8 1.5 26-Mar-97 Steel 215.02 48.60 14.95 200.07 2.60 1.09 ND ND 13-Jun-97 Steel 215.02 48.60 15.84 199.18 2.60 1.09 1.1 0.9 24-Sep-97 Steel 215.02 48.31 19.11 195.91 2.60 1.10 ND ND Source Control ongoing 09-Dec-97 Steel 215.02 48.31 16.45 198.57 1.40 1.10 14.8 9.8 Ground Surface rergraded 25-Mar-98 Steel 215.02 46.31 14.87 200.15 -- -- 8.8 9.2 Ground Surface regraded 06-Jun-98 Steel 215.02 46.31 15.93 199.09 -- -- 4.5 4.5 Ground Surface regraded 22-Sep-98 Steel 215.02 46.31 20.36 194.66 1.42 1.03 3.8 4.5 02-Dec-98 Steel 215.02 46.31 14.71 200.31 1.42 1.03 1.0 0.8 25-Mar-99 Steel 215.02 46.31 13.15 201.87 1.42 1.03 8.0 7.9 23-Jun-99 Steel 215.02 46.31 17.90 198.41 1.42 1.03 2.8 10.0 14-Sep-99 Steel 214.9 46.31 21.55 193.36 1.42 1.03 2.4 2.7 Drought Conditions 29-Mar-00 Steel 214.9 46.31 13.08 201.82 1.42 -1.03 0.0 0.0 06-Sep-00 Steel 214.9 46.30 18.10 196.80 1.80 -1.20 2.7 2.0 24-Apr-01 Steel 214.9 46.31 12.90 202.00 1.80 -1.20 0.1 0.0 18-Sep-01 Steel 214.9 46.31 22.13 192.77 1.80 -1.20 1.3 1.3 1-May-02 Steel 214.9 46.31 12.65 202.25 1.80 -1.20 0.0 0.0 16-Sep-02 Steel 214.9 46.31 21.58 193.32 0.91 0.0 1.1 1.1 14-Apr-03 Steel 214.9 46.31 13.55 201.35 0.90 0.0 0.8 0.8 10-Sep-03 Steel 214.9 46.31 20.06 194.84 1.35 -0.99 1.3 1.3 21-Apr-04 Steel 214.9 46.31 13.46 201.44 1.35 -0.99 0.0 0.0 22-Sep-04 Steel 214.9 46.31 16.02 198.88 1.35 -0.99 0.0 0.0 20-Apr-05 Steel 214.9 46.31 13.48 201.42 1.35 -0.99 0.0 0.0 09-Sep-05 Steel 214.9 34.75 19.55 195.35 1.38 -0.92 2.2 5.5 19-Sep-06 Steel 214.9 34.75 13.65 201.25 1.38 -0.92 0.0 0.0 28-Sep-06 Steel 214.9 34.75 17.35 197.55 1.38 -0.92 0.0 0.0 25-Apr-07 Steel 214.9 34.75 12.85 202.05 1.39 -0.93 NM NM 18-Sep-07 Steel 214.9 46.35 20.32 194.58 1.39 -0.93 NM NM 23-Apr-08 Steel 214.9 19.40 13.75 201.15 1.39 -0.93 NM NM DTB-Likely a measurement error 23-Apr-09 Steel 214.9 19.40 15.35 199.55 1.39 -0.93 NM NM DTB-Likely a measurement error
24-Apr-10 Steel 214.9 23.90 13.50 201.40 1.39 -0.93 NM NM Difficulty achieving DTB, likely due to submersible pump equipment

Central Maine Power (222350) MOM 2010 Annual Report B-1 April 2010APPENDIX B Groundwater Elevations and PID Readings

O'CONNOR SITE April 2010
Reference DTB DTW Water Stick-up PVC/Steel Diff. TVOC Well Head TVOC Ambient Comments Well ID Date Reference Elev. (MSL) (ft) (ft) Elev. (MSL) (ft) (ft) (ppm) (ppm) MW106A 07-Nov-86 PVC 184.27 60.67 4.37 179.90 2.57 0.22 NR NR

10-Nov-86 PVC 184.27 60.67 1.77 182.50 2.57 0.22 NR NR 13-Nov-86 PVC 184.27 60.67 0.07 184.20 2.57 0.22 NR NR 04-Feb-87 PVC 184.27 60.67 -0.03 184.30 2.57 0.22 NR NR 27-28-Apr-87 PVC 184.27 60.67 -0.03 184.30 2.57 0.22 NR NR 23-Jul-87 PVC 184.27 60.67 0.57 183.70 2.57 0.22 NR NR 30-Oct-87 PVC 184.27 60.67 -0.03 184.30 2.57 0.22 NR NR 04-Dec-87 PVC 184.27 60.67 -0.03 184.30 2.57 0.22 NR NR 17-Jun-91 PVC 184.27 NR -0.77 185.04 NR NR NR NR 15-Jul-91 PVC 184.27 NR 1.29 182.98 NR NR NR NR 19-Aug-91 PVC 184.27 NR 1.29 182.98 NR NR NR NR 2-3-Aug-92 PVC 184.33 NR 0.00 184.33 NR NR NR NR 19-21-Jan-93 PVC 184.33 NR -(3) NA NR NR NR NR 18-Nov-93 PVC 184.33 NR >184.33 NA NR NR NR NR 29-Nov-94 PVC 184.33 NR NR NA NR NR NR NR 12-Dec-94 PVC 184.33 NR -0.61 184.91 NR NR NR NR 16-Oct-95 Steel 184.54 59.20 1.61 182.93 2.56 0.14 ND ND Seal destroyed, not flowing 23-Jan-96 Steel 184.54 Frozen 0.00 184.54 2.48 0.40 ND ND 02-May-96 Steel 184.54 59.20 0.00 184.14 2.48 0.40 ND ND 08-Jul-96 PVC 184.33 58.50 0.37 183.96 2.59 0.03 17.4 3.60 24-Sep-96 PVC 184.33 58.50 0.00 184.33 2.59 0.03 ND ND Slight artesian flow 09-Dec-96 PVC 184.33 58.50 0.00 184.33 2.49 0.03 1.5 0.0 Slight artesian flow 25-Mar-97 PVC 184.33 57.00 0.00 184.33 2.30 0.10 0.0 0.0 12-Jun-97 PVC 184.33 57.00 0.00 184.33 2.30 0.10 0.0 0.0 23-Sep-97 PVC 184.33 57.00 1.68 182.65 2.30 0.10 ND ND Source Control ongoing 08-Dec-97 PVC 184.33 57.00 1.10 183.23 2.30 0.10 10.2 6.0 Tubing partially frozen 25-Mar-98 PVC 184.33 57.00 0.00 184.33 2.30 -0.01 1.7 0.4 09-Jun-98 PVC 184.33 57.00 0.10 184.23 2.30 -0.01 5.6 4.3 21-Sep-98 PVC 184.33 57.00 2.60 181.73 2.30 -0.01 3.1 4.6 01-Dec-98 PVC 184.33 57.00 0.00 184.33 2.30 -0.01 1.0 0.4 24-Mar-99 PVC 184.33 57.00 0.00 184.33 2.85 0.60 N/A N/A 21-Jun-99 PVC 184.33 57.00 1.17 183.16 2.58 0.70 0.7 0.7 13-Sep-99 PVC 184.33 57.00 3.14 181.19 2.58 0.70 0.0 0.0 Drought Conditions 27-Mar-00 PVC 184.33 57.00 0.00 184.33 2.51 0.00 0.7 0.9 05-Sep-00 PVC 184.33 57.00 0.65 183.68 2.65 0.20 3.5 3.0 23-Apr-01 PVC 184.33 57.00 -0.08 184.41 2.70 0.24 0.2 0.0 Artesian flow 17-Sep-01 PVC 184.33 57.00 4.42 179.91 2.70 0.14 NM NM 01-May-02 PVC 184.33 57.00 0.00 184.33 2.70 0.14 0.0 0.0 16-Sep-02 PVC 184.33 57.00 3.91 180.42 2.75 0.28 1.0 1.0 15-Apr-03 PVC 184.33 57.00 0.00 184.33 2.60 0.20 0.0 0.0 09-Sep-03 PVC 184.33 57.00 2.40 181.93 2.68 0.22 1.0 1.0 21-Apr-04 PVC 184.33 57.00 0.00 184.33 2.62 0.24 0.0 0.0 21-Sep-04 PVC 184.33 57.00 0.00 184.33 2.60 0.20 0.2 0.2 20-Apr-05 PVC 184.33 57.00 0.00 184.33 2.60 0.20 0.0 0.0 12-Sep-05 PVC 184.33 57.00 0.62 183.21 2.60 0.20 0.0 0.0 18-Apr-06 PVC 184.33 57.00 0.00 183.33 2.45 0.24 0.0 0.0 27-Sep-06 PVC 184.33 57.00 0.00 184.33 2.45 0.24 0.0 0.0 25-Apr-07 PVC 184.33 57.00 0.00 184.33 2.45 0.24 NM NM 19-Sep-07 PVC 184.33 57.00 2.41 181.92 2.45 0.24 NM NM 23-Apr-08 PVC 184.33 57.00 0.00 184.33 2.45 0.24 NM NM 23-Apr-09 PVC 184.33 57.00 0.00 184.33 2.45 0.24 NM NM 21-Apr-10 PVC 184.33 57.00 0.00 184.33 2.45 0.24 NM NM

Central Maine Power (222350) MOM 2010 Annual Report B-2 April 2010APPENDIX B Groundwater Elevations and PID Readings

O'CONNOR SITE April 2010
Reference DTB DTW Water Stick-up PVC/Steel Diff. TVOC Well Head TVOC Ambient Comments Well ID Date Reference Elev. (MSL) (ft) (ft) Elev. (MSL) (ft) (ft) (ppm) (ppm) MW106B 07-Nov-86 PVC 183.65 102.25 -5.65 189.30 2.95 NA NR NR

10-Nov-86 PVC 183.65 102.25 -5.65 189.30 2.95 NA NR NR 13-Nov-86 PVC 183.65 102.25 -4.15 187.80 2.95 NA NR NR 04-Feb-87 PVC 183.65 102.25 -4.95 188.60 2.95 NA NR NR 27-28-Apr-87 PVC 183.65 102.25 -4.95 188.60 2.95 NA NR NR 23-Jul-87 PVC 183.65 102.25 -3.55 187.20 2.95 NA NR NR 30-Oct-87 PVC 183.65 102.25 -5.45 189.10 2.95 NA NR NR 04-Dec-87 PVC 183.65 102.25 -6.15 189.80 2.95 NA NR NR 17-Jun-91 PVC 183.65 NR -6.17 189.82 NR NR NR NR 15-Jul-91 PVC 183.65 NR -3.26 186.91 NR NR NR NR 19-Aug-91 PVC 183.65 NR -3.24 186.89 NR NR NR NR 2-3-Aug-92 Steel 184.25 NR -4.24 188.49 NR NR NR NR 19-21-Jan-93 Steel 184.25 NR -3.70 180.60 NR NR NR NR 18-Nov-93 Steel 184.25 NR >184.25 NA NR NR NR NR 29-Nov-94 Steel 184.25 NR NR NA NR NR NR NR 12-Dec-94 Steel 184.25 NR -4.42 188.67 NR NR NR NR 16-Oct-95 Steel 184.37 100.80 -0.70 185.07 2.81 0.58 ND ND Flowing. 23-Jan-96 Steel 184.37 100.92 -1.80 186.17 2.83 0.55 ND ND DTB - Meter hit clay./Flowing. 06-May-96 Steel 184.37 100.92 -4.00 188.37 2.80 0.60 ND ND DTB - Meter hit clay./Flowing. 08-Jul-96 PVC 183.65 101.80 -4.00 187.65 2.80 0.55 ND ND Flowing. 24-Sep-96 PVC 183.65 101.80 -3.58 187.23 2.80 0.55 ND ND Flowing. 11-Dec-96 PVC 183.65 101.80 -2.80 186.45 2.72 0.58 ND ND Artesian flow. 25-Mar-97 PVC 183.65 101.80 -3.76 187.41 2.72 0.58 ND ND 12-Jun-97 PVC 183.65 101.80 -2.90 186.55 2.72 0.58 ND ND Moderate recharge 23-Sep-97 PVC 183.65 99.00 -1.55 185.20 2.6 0.6 NM NM Source Control ongoing 8-Dec-97 PCV 183.65 99.00 -3.27 186.92 2.6 0.6 0 0 Artesian Flow 25-Mar-98 PCV 183.65 99.00 NM -- 3.0 -- 0 0 9-Jun-98 PCV 183.65 >100.00 3.03 186.95 2.8 0.55 0 0 Artesian Flow 21-Sep-98 PCV 183.65 >100.01 -1.00 184.65 2.9 0.62 1.2 1.2 1-Dec-98 PCV 183.65 >100.01 -4.00 187.65 2.9 0.62 0.4 0.4 24-Mar-99 PVC 183.65 >100.01 -3.00 186.65 2.7 0.70 N/A N/A 21-Jun-99 PCV 183.65 >100.01 -1.66 185.31 2.7 0.7 0 0 13-Sep-99 PVC 183.65 >100.01 0.00 183.65 2.7 0.0 0 0 27-Mar-00 PVC 184.65 >100.02 -2.96 186.61 2.4 0.65 0.4 0.3 5-Sep-00 PVC 184.65 >100.02 -1.50 186.15 2.7 0.70 1.7 1.3 Artesian Flow 23-Apr-01 PVC 184.65 >100.02 -2.90 187.55 2.72 0.60 0.3 0 Artesian Flow 17-Sep-01 PVC 184.65 >100.02 1.51 183.14 2.72 0.60 0.0 0.0 1-May-02 PVC 184.65 >100.02 -3.80 188.45 2.72 0.60 0.0 0.0 16-Sep-02 PVC 184.64 >100.00 -0.45 185.10 2.74 0.62 1.1 1.0 15-Apr-03 PVC 184.64 >100.00 -4.40 189.04 2.74 0.62 0.6 0.6 9-Sep-03 PVC 184.64 >100.00 -1.75 186.39 2.74 0.62 0.0 0.0 21-Apr-04 PVC 184.64 >100.00 -5.65 190.29 2.72 0.52 0.0 0.0 21-Sep-04 PVC 184.64 >100.00 -4.42 189.06 2.80 0.33 0.0 0.0 20-Apr-05 PVC 184.64 >100.00 -6.89 191.53 2.80 0.33 0.0 0.0 12-Sep-05 PVC 184.64 >100.00 -2.10 186.74 2.80 0.33 0.0 0.0 18-Apr-06 PVC 184.64 >100.00 6.80 191.44 2.65 0.33 0.0 0.0 27-Sep-06 PVC 184.64 >100.00 7.00 191.64 2.65 0.33 0.0 0.0 Artesian Flow 25-Apr-07 PVC 184.64 >100.00 -7.80 192.44 2.65 0.33 NM NM Artesian Flow 19-Sep-07 PVC 184.64 >100.00 -7.00 191.64 2.65 0.33 NM NM Artesian Flow 23-Apr-08 PVC 184.64 99.00 -4.75 189.39 2.65 0.33 NM NM Artesian Flow 23-Apr-09 PVC 184.64 99.00 -8.00 192.64 2.65 0.33 NM NM Artesian Flow 21-Apr-10 PVC 184.64 99.00 -3.80 188.44 2.65 0.33 NM NM Artesian Flow

Central Maine Power (222350) MOM 2010 Annual Report B-3 April 2010APPENDIX B Groundwater Elevations and PID Readings

O'CONNOR SITE April 2010
Reference DTB DTW Water Stick-up PVC/Steel Diff. TVOC Well Head TVOC Ambient Comments Well ID Date Reference Elev. (MSL) (ft) (ft) Elev. (MSL) (ft) (ft) (ppm) (ppm) OW201B 2-3-Aug-92 Steel 217.39 NR 14.20 203.19 NR NR NR ND

19-21-Jan-93 Steel 217.39 NR 13.70 203.69 NR NR NR NR 18-Nov-93 Steel 217.39 NR 13.84 203.55 NR NR NR NR 29-Nov-94 Steel 217.39 NR 11.67 205.72 NR NR NR NR 12-Dec-94 Steel 217.39 NR 11.46 205.93 NR NR NR NR 16-Oct-95 Steel 217.61 101.60 17.61 200.00 0.96 NA ND ND 23-Jan-96 Steel 217.61 101.86 10.95 206.66 1.00 0.40 ND ND DTB - Meter hit clay. 03-May-96 217.61 101.86 11.40 206.21 0.90 0.30 ND ND 10-Jul-96 Steel 217.61 101.06 12.95 204.66 0.90 0.30 ND ND 25-Sep-96 Steel 217.61 101.00 12.45 205.16 0.90 0.30 ND ND 11-Dec-96 Steel 217.61 101.00 10.48 207.13 0.90 0.09 1.8 1.7 27-Mar-97 Steel 217.61 100.90 12.50 205.11 0.90 0.09 0.7 0.3 13-Jun-97 Steel 217.61 100.90 12.57 205.04 0.90 0.09 1.9 1.8 23-Sep-97 Steel 217.61 100.50 14.88 202.73 1.00 0.09 NM NM Source Control ongoing 08-Dec-97 Steel 217.61 100.50 13.00 204.61 0.00 0.09 8.0 8.0 Ground surface regraded 25-Mar-98 Steel 217.61 100.50 11.50 206.11 0.00 -- 0.0 0.0 10-Jun-98 Steel 217.61 100.50 12.25 205.36 0.00 -- 2.2 1.5 22-Sep-98 Steel 217.61 100.50 16.39 201.22 0.00 -- 4.1 4.1 02-Dec-98 Steel 217.61 100.50 10.65 206.96 0.00 -- 1.7 1.6 25-Mar-99 Steel 217.61 100.50 9.85 207.76 0.00 -- 6.8 7.7 22-Jun-99 Steel 217.61 100.50 13.86 203.75 0.00 -- 0.9 1.1 14-Sep-99 Steel 217.5 100.50 17.31 200.19 0.00 00 0.0 0.0 29-Mar-00 Steel 217.5 100.50 9.14 20.8.36 0.00 0.0 0.0 0.0 06-Sep-00 Steel 217.5 100.50 13.83 203.67 0.90 0.37 1.2 0.9 24-Apr-01 Steel 217.5 100.50 9.11 208.39 0.90 0.37 0.0 0.0 17-Sep-01 Steel 217.5 100.50 18.20 199.30 0.90 0.37 NM NM 01-May-02 Steel 217.5 100.50 9.66 207.84 0.90 0.37 0.0 0.0 17-Sep-02 Steel 217.5 100.50 18.35 199.15 0.95 0.37 1.1 1.1 15-Apr-03 Steel 217.5 100.50 10.33 207.17 0.95 0.37 0.9 0.9 10-Sep-03 Steel 217.5 100.50 16.91 200.59 0.95 0.37 1.3 1.5 21-Apr-05 Steel 217.5 100.50 10.31 207.19 0.95 0.37 0.0 0.0 22-Sep-04 Steel 217.5 100.50 12.00 203.50 1.00 0.12 0.0 0.0 20-Apr-05 Steel 217.5 100.50 9.78 207.72 1.00 0.12 0.0 0.0 13-Sep-05 Steel 217.5 > 96.00 15.90 201.60 1.00 0.25 0.0 0.0 19-Apr-06 Steel 217.5 100.50 10.11 207.39 0.40 0.30 0.0 0.0 28-Sep-06 Steel 217.5 100.50 13.17 204.33 0.40 0.30 0.0 0.0 25-Apr-07 Steel 217.5 100.50 9.45 208.05 0.40 0.31 NM NM 18-Sep-07 Steel 217.5 96.00 16.85 200.65 0.40 0.31 NM NM 23-Apr-08 Steel 217.5 96.00 9.88 207.62 0.40 0.31 NM NM 23-Apr-09 Steel 217.5 96.00 8.90 208.60 0.40 0.31 NM NM 22-Apr-10 Steel 217.5 96.00 9.85 207.65 0.40 0.31 NM NM

Central Maine Power (222350) MOM 2010 Annual Report B-4 April 2010APPENDIX B Groundwater Elevations and PID Readings

O'CONNOR SITE April 2010
Reference DTB DTW Water Stick-up PVC/Steel Diff. TVOC Well Head TVOC Ambient Comments Well ID Date Reference Elev. (MSL) (ft) (ft) Elev. (MSL) (ft) (ft) (ppm) (ppm) MW-501 06-May-96 PVC 211.51 13.29 8.40 203.11 2.80 0.13 126.0 2.1

08-Jul-96 PVC 211.51 13.29 11.39 200.12 2.80 0.13 44.0 1.5 23-Sep-96 PVC 211.51 13.30 10.03 201.48 2.10 0.13 1.4 0.7 Low recharge 09-Dec-96 PVC 211.51 13.30 8.20 203.31 2.10 0.13 2.8 0.1 Low recharge/stable drawdown 25-Mar-97 PVC 211.51 13.30 9.46 202.05 2.40 0.15 1.4 1.4 12-Jun-97 PVC 211.51 13.30 10.90 200.61 2.40 0.15 1.0 0.3 Very low recharge 23-Sep-97 PVC 211.51 13.30 11.69 199.82 2.55 0.10 NM NM Source Control ongoing 08-Dec-97 PVC 211.51 13.25 10.02 201.49 2.44 0.12 0.0 0.00 24-Mar-98 PVC 211.51 13.30 9.80 201.35 2.40 0.12 0.0 0.00 09-Jun-98 PVC 211.51 13.30 10.72 200.79 2.40 0.12 2.8 2.1 Poor recharge, no sample 21-Sep-98 PVC 211.51 13.30 12.36 199.15 2.40 0.12 5.5 5.5 Poor recharge, no sample 18-Apr-06 PVC 211.49 13.37 8.24 203.25 2.55 0.16 0.0 0.0 01-Dec-98 PVC 211.51 13.29 8.23 203.28 2.40 0.12 0.8 0.8 23-Mar-99 PVC 211.51 13.31 7.34 204.17 2.40 0.12 2.7 2.5 21-Jun-99 PVC 211.51 13.31 11.55 199.96 2.40 0.12 1.2 1.2 13-Sep-99 PVC 211.49 13.31 10.86 200.63 2.59 0.00 0.0 0.0 No recharge, No Sample 27-Mar-00 PVC 211.49 13.31 8.49 203.00 2.51 0.10 2.2 1.6 05-Sep-00 PVC 211.49 13.30 11.15 200.34 2.55 0.10 3.6 4.4 No recharge, No Sample 23-Apr-01 PVC 211.49 13.31 8.05 203.44 2.50 0.10 0.0 0.0 100ml/min - recharge 17-Sep-01 PVC 211.49 13.31 12.11 199.38 2.50 0.10 0.0 0.0 30-Apr-02 PVC 211.49 13.31 5.20 206.29 2.50 0.10 0.0 0.0 16-Sep-02 PVC 211.49 13.30 12.04 199.45 2.46 0.10 1.8 1.8 No recharge, No Sample 14-Apr-03 PVC 211.49 13.32 9.31 202.18 2.50 0.10 0.8 0.8 09-Sep-03 PVC 211.49 13.32 11.58 199.91 2.44 0.10 0.8 0.8 20-Apr-04 PVC 211.49 13.30 8.35 203.14 2.44 0.10 0.0 0.0 21-Sep-04 PVC 211.49 13.34 11.66 199.83 2.71 0.16 0.0 0.0 19-Apr-05 PVC 211.49 13.34 8.72 202.77 2.71 0.16 0.0 0.0 12-Sep-05 PVC 211.49 13.35 12.00 199.49 2.71 0.16 10.4 11.3 PID baseline at 10-12 27-Sep-06 PVC 211.49 13.40 11.42 200.07 2.71 0.16 0.0 0.0 24-Apr-07 PVC 211.49 13.40 7.00 204.49 2.71 0.16 NM NM 18-Sep-07 PVC 211.49 13.38 12.26 199.23 2.71 0.16 NM NM No recharge, No sample 22-Apr-08 PVC 211.49 13.50 8.05 203.44 2.71 0.16 NM NM 23-Apr-09 PVC 211.49 13.50 4.20 207.29 2.71 0.16 NM NM 21-Apr-10 PVC 211.49 12.40 7.68 203.81 2.71 0.16 NM NM

Central Maine Power (222350) MOM 2010 Annual Report B-5 April 2010APPENDIX B Groundwater Elevations and PID Readings

O'CONNOR SITE April 2010
Reference DTB DTW Water Stick-up PVC/Steel Diff. TVOC Well Head TVOC Ambient Comments Well ID Date Reference Elev. (MSL) (ft) (ft) Elev. (MSL) (ft) (ft) (ppm) (ppm) MW-502 07-May-96 PVC 216.34 17.75 9.25 207.09 3.01 0.11 4.90 0.19

09-Jul-96 PVC 216.34 17.76 11.47 204.87 3.01 0.11 34.0 14.0 23-Sep-96 PVC 216.34 17.76 9.44 206.90 3.01 0.11 3.1 2.1 Low recharge 10-Dec-96 PVC 216.34 17.71 8.07 208.27 2.71 0.10 2.2 0.7 Very low recharge 25-Mar-97 PVC 216.34 17.71 10.52 205.92 2.22 0.00 1.2 1.2 12-Jun-97 PVC 216.34 17.75 10.04 206.30 2.22 0.00 1.0 0.7 Very low recharge 23-Sep-97 PVC 216.34 17.70 12.11 204.23 2.40 0.00 NM NM Source Control onging 08-Dec-97 PVC 216.34 13.30 10.33 206.01 2.40 0.00 0.0 0.0 25-Mar-98 PVC 216.34 17.71 9.14 207.20 2.42 0.00 0.0 0.0 09-Jun-98 PVC 216.34 17.72 10.14 206.20 2.40 -0.05 0.0 0.0 21-Sep-98 PVC 216.34 17.72 14.69 201.65 2.40 -0.05 4.5 5.5 Poor recharge, no sample 01-Dec-98 PVC 216.34 17.74 8.42 207.92 2.68 -0.02 0.7 0.6 24-Mar-99 PVC 216.34 17.71 8.07 208.27 2.68 -0.02 9.2 8.6 21-Jun-99 PVC 216.34 17.70 12.23 204.11 2.50 0.03 0.0 0.0 13-Sep-99 PVC 216.28 17.70 15.75 200.53 2.50 0.03 1.9 5.0 No recharge, No sample 27-Mar-00 PVC 216.28 17.70 7.71 208.57 2.51 0.06 0.4 0.2 06-Sep-00 PVC 216.28 17.65 11.37 204.91 2.50 0.03 3.6 2.6 23-Apr-01 PVC 216.28 17.71 7.33 208.95 2.30 0.10 0.2 0.0 17-Sep-01 PVC 216.28 17.71 15.68 200.60 2.30 0.10 0.0 0.0 30-Apr-02 PVC 216.28 17.71 4.44 211.84 2.30 0.10 0.0 0.0 16-Sep-02 PVC 216.28 17.66 15.75 200.53 2.42 0.04 2.2 2.0 No recharge, No sample 14-Apr-03 PVC 216.28 17.66 5.36 210.92 2.56 0.04 0.8 0.8 09-Sep-03 PVC 216.28 17.66 15.00 201.28 2.56 0.04 0.8 0.8 20-Apr-04 PVC 216.28 17.66 3.97 212.31 2.56 0.04 0.0 0.0 21-Sep-04 PVC 216.28 17.66 8.31 207.97 2.56 0.08 0.0 0.0 19-Apr-05 PVC 216.28 17.71 5.28 211.00 2.56 0.08 0.0 0.0 12-Sep-05 PVC 216.28 17.70 14.66 201.62 2.56 0.08 8.2 8.2 PID baseline at 8.0-9.0 18-Apr-06 PVC 216.28 17.71 5.52 210.76 2.56 0.10 0.0 0.0 27-Sep-06 PVC 216.28 17.70 12.37 203.91 2.56 0.10 0.0 0.0 24-Apr-07 PVC 216.28 17.71 4.34 211.94 2.56 0.10 NM NM 18-Sep-07 PVC 216.28 17.71 15.68 200.60 2.56 0.10 NM NM No recharge, No sample 22-Apr-08 PVC 216.28 17.75 6.30 209.98 2.56 0.10 NM NM 22-Apr-09 PVC 216.28 17.75 3.85 212.43 2.56 0.10 NM NM 21-Apr-10 PVC 216.28 17.77 5.12 211.16 2.60 -0.01 NM NM

Central Maine Power (222350) MOM 2010 Annual Report B-6 April 2010APPENDIX B Groundwater Elevations and PID Readings

O'CONNOR SITE April 2010
Reference DTB DTW Water Stick-up PVC/Steel Diff. TVOC Well Head TVOC Ambient Comments Well ID Date Reference Elev. (MSL) (ft) (ft) Elev. (MSL) (ft) (ft) (ppm) (ppm) MW-503 06-May-96 PVC 207.28 13.07 5.36 201.92 2.92 0.30 3.40 0.19

08-Jul-96 PVC 207.28 13.07 7.82 199.46 2.92 0.30 17.1 2.1 23-Sep-96 PVC 207.28 13.07 7.31 199.97 2.92 0.30 16.1 2.1 10-Dec-96 PVC 207.28 13.07 5.60 201.68 2.92 0.01 51.1 1.5 25-Mar-97 PVC 207.28 13.11 6.24 201.04 2.85 0.02 ND ND 12-Jun-97 PVC 207.28 13.11 8.08 199.20 2.85 0.02 3.7 0.5 Low recharge 23-Sep-97 PVC 207.28 13.11 8.50 198.78 2.20 0.01 NM NM Source Control ongoing 08-Dec-97 PVC 207.28 13.11 7.70 206.58 2.25 0.00 0.0 0.0 24-Mar-98 PVC 207.28 13.12 7.45 199.58 2.43 -0.05 0.0 0.0 09-Jun-98 PVC 207.28 13.12 8.41 198.87 2.31 -0.09 4.7 5.5 21-Sep-98 PVC 207.28 13.12 10.30 196.98 2.31 -0.09 0.5 0.5 01-Dec-98 PVC 207.28 13.12 5.55 201.73 2.31 -0.09 1.4 1.3 24-Mar-99 PVC 207.28 13.11 5.16 202.12 2.31 -0.09 0.0 0.0 21-Jun-99 PVC 207.28 13.15 9.11 198.17 2.34 -0.04 0.0 0.0 13-Sep-99 PVC 207.29 13.15 9.82 197.47 2.34 -0.04 0.0 0.0 27-Mar-00 PVC 207.29 13.15 5.52 201.77 2.31 -0.05 0.6 0.5 05-Sep-00 PVC 207.29 13.12 8.82 198.47 2.30 -0.04 2.8 2.7 23-Apr-01 PVC 207.29 13.11 5.52 201.77 2.40 -0.01 0.2 0.0 17-Sep-01 PVC 207.29 13.11 12.72 194.57 2.40 -0.01 0.0 0.0 30-Apr-02 PVC 207.29 13.11 4.55 202.74 2.40 -0.01 0.0 0.0 16-Sep-02 PVC 207.29 13.08 11.85 195.44 2.44 -0.10 0.9 0.9 No recharge, No sample 14-Apr-03 PVC 207.29 13.13 6.00 201.29 2.40 -0.22 0.7 0.7 09-Sep-03 PVC 207.29 13.13 11.32 195.97 2.40 0.14 0.8 0.8 20-Apr-04 PVC 207.29 13.13 5.21 202.08 2.40 0.14 0.0 0.0 21-Sep-04 PVC 207.29 13.13 7.30 199.99 2.40 0.14 0.0 0.0 19-Apr-05 PVC 207.29 13.13 6.25 201.04 2.40 0.14 0.0 0.0 12-Sep-05 PVC 207.29 13.10 9.92 197.37 2.40 0.14 0.0 0.0 18-Apr-06 PVC 207.29 13.13 5.40 201.89 2.45 0.20 0.0 0.0 27-Sep-06 PVC 207.29 13.13 8.50 198.79 2.45 0.20 0.0 0.0 24-Apr-07 PVC 207.29 13.13 5.55 201.74 2.45 0.20 NM NM 18-Sep-07 PVC 207.29 13.23 11.35 195.94 2.45 0.20 NM NM No recharge, No sample 22-Apr-08 PVC 207.29 13.33 6.04 201.25 2.45 0.20 NM NM 22-Apr-09 PVC 207.29 13.33 4.29 203.00 2.45 0.20 NM NM 21-Apr-10 PVC 207.29 13.33 5.90 201.39 2.45 0.20 NM NM

Central Maine Power (222350) MOM 2010 Annual Report B-7 April 2010APPENDIX B Groundwater Elevations and PID Readings

O'CONNOR SITE April 2010
Reference DTB DTW Water Stick-up PVC/Steel Diff. TVOC Well Head TVOC Ambient Comments Well ID Date Reference Elev. (MSL) (ft) (ft) Elev. (MSL) (ft) (ft) (ppm) (ppm) MW-507A 09-Dec-97 PVC 217.56 22.85 9.20 208.36 NM NM 12.4 8.9 New well 10-97

26-Mar-98 PVC 217.56 22.85 8.36 209.20 3.40 -0.15 0.0 0.0 10-Jun-98 PVC 217.56 22.85 9.44 208.12 3.40 -0.15 7.2 7.2 22-Sep-98 PVC 217.56 22.85 13.50 204.06 4.40 -0.15 3.1 4.1 02-Dec-98 PVC 217.56 22.87 7.87 209.69 3.40 -0.15 1.4 0.9 25-Mar-99 PVC 217.56 22.75 7.45 210.11 3.40 -0.15 7.2 7.1 22-Jun-99 PVC 217.56 22.75 10.59 206.97 3.40 -0.15 2.7 2.7 13-Sep-99 PVC 217.56 22.75 13.65 203.91 3.40 -0.15 0.5 0.6 27-Mar-00 PVC 217.56 22.75 4.71 212.85 3.40 -0.15 0.0 0.0 06-Sep-00 PVC 217.56 22.75 9.77 207.79 3.63 -0.16 2.6 2.4 24-Apr-01 PVC 217.56 22.75 6.56 211.00 3.70 -0.13 0.0 0.0 18-Sep-01 PVC 217.56 22.75 15.44 202.12 3.70 -0.13 1.8 1.8 01-May-02 PVC 217.56 22.75 6.76 210.80 3.70 -0.13 0.0 0.0 17-Sep-02 PVC 217.56 22.76 15.48 202.08 3.37 -0.14 0.9 0.9 15-Apr-03 PVC 217.56 22.76 7.12 210.44 3.37 -0.14 0.8 0.8 10-Sep-03 PVC 217.56 22.76 14.00 203.56 3.33 -0.15 0.0 0.0 20-Apr-04 PVC 217.56 22.76 4.53 213.03 3.33 -0.15 0.0 0.0 22-Sep-04 PVC 217.56 22.76 7.87 209.69 3.37 -0.14 0.0 0.0 20-Apr-05 PVC 217.56 22.77 6.85 210.71 3.37 -0.14 0.0 0.0 12-Sep-05 PVC 217.56 22.75 13.10 204.46 3.37 -0.14 0.0 9.0 PID baseline at 8.0 - 9.0 19-Apr-06 PVC 217.56 22.75 7.25 210.31 3.63 -0.14 0.0 0.0 27-Sep-06 PVC 217.56 22.75 9.93 207.63 3.63 -0.14 0.0 0.0 25-Apr-07 PVC 217.56 22.75 6.74 210.82 3.63 -0.14 NM NM 18-Sep-07 PVC 217.56 22.75 14.17 203.39 3.63 -0.14 NM NM 22-Apr-08 PVC 217.56 22.30 7.05 210.51 3.63 -0.14 NM NM 22-Apr-09 PVC 217.56 22.30 4.93 212.63 3.63 -0.14 NM NM 21-Apr-10 PVC 217.56 22.50 6.88 210.68 3.63 -0.14 NM NM

Central Maine Power (222350) MOM 2010 Annual Report B-8 April 2010APPENDIX B Groundwater Elevations and PID Readings

O'CONNOR SITE April 2010
Reference DTB DTW Water Stick-up PVC/Steel Diff. TVOC Well Head TVOC Ambient Comments Well ID Date Reference Elev. (MSL) (ft) (ft) Elev. (MSL) (ft) (ft) (ppm) (ppm) MW-508B 09-Dec-97 PVC 216.96 50.00 13.30 203.65 NM NM 0.0 0.0 New well 10-97

25-Mar-98 PVC 216.96 49.99 12.49 204.46 3.00 -0.15 1.0 1.0 09-Jun-98 PVC 216.96 49.99 13.35 203.60 3.00 -0.15 3.9 3.9 22-Sep-98 PVC 216.96 49.99 17.40 199.55 3.00 -0.15 2.3 2.3 01-Dec-98 PVC 216.96 49.99 12.48 204.47 3.00 -0.15 0.4 0.2 24-Mar-99 PVC 216.96 49.99 10.65 206.30 3.00 -0.15 0.0 0.0 22-Jun-99 PVC 216.96 50.02 14.92 202.03 3.00 -0.15 0.6 0.6 13-Sep-99 PVC 216.96 50.02 18.11 198.84 3.00 -0.11 0.0 0.0 27-Mar-00 PVC 216.96 50.02 9.90 207.06 3.00 0.00 0.0 0.0 06-Sep-00 PVC 216.96 49.99 14.42 203.14 2.98 -0.12 2.2 1.2 24-Apr-01 PVC 216.96 49.99 10.40 207.16 3.00 -0.12 0.3 0.0 17-Sep-01 PVC 216.96 49.99 19.11 198.45 3.00 -0.12 1.8 1.8 01-May-02 PVC 216.96 49.99 10.30 206.66 3.00 -0.12 0.0 0.0 17-Sep-02 PVC 216.96 49.99 18.96 198.00 2.71 -0.12 0.9 0.9 15-Apr-03 PVC 216.96 49.99 11.00 205.96 2.71 -0.12 0.0 0.0 10-Sep-03 PVC 216.96 49.99 17.60 199.36 2.82 -0.15 0.0 0.0 21-Apr-04 PVC 216.96 49.99 10.96 206.00 2.82 -0.15 0.0 0.0 22-Sep-04 PVC 216.96 50.00 12.65 204.04 2.82 -0.15 0.0 0.0 20-Apr-05 PVC 216.96 50.00 10.90 206.06 2.87 -0.11 0.0 0.0 13-Sep-05 PVC 216.96 50.00 17.18 199.78 2.82 -0.15 0.0 0.0 19-Apr-06 PVC 216.96 50.00 11.10 205.86 2.73 -0.15 0.0 0.0 27-Sep-06 PVC 216.96 50.00 14.50 202.46 2.73 -0.15 0.0 0.0 25-Apr-07 PVC 216.96 50.00 10.76 206.20 2.73 -0.15 NM NM 18-Sep-07 PVC 216.96 50.00 18.00 198.96 2.73 -0.15 NM NM VOCs only, water level exceeded pump limit 22-Apr-08 PVC 216.96 50.02 11.10 205.86 2.73 -0.15 NM NM 22-Apr-09 PVC 216.96 50.02 10.09 206.87 2.73 -0.15 NM NM 21-Apr-10 PVC 216.96 50.02 11.10 205.86 2.73 -0.15 NM NM Notes:
DTB = Depth to bottom of well from top of casing. DTW = Depth to water from top of casing. Stick-up = Length of casing above ground surface. TVOC = Total Volatile Organic Compounds. PVC/Steel Diff. = Distance between top of steel and top of PVC casing. NA = Not analyzed.; NR = Not recorded. Elevations reported in feet above mean sea level. NM = Not measured

Central Maine Power (222350) MOM 2010 Annual Report B-9 April 2010

# APPENDIX C: FIELD RECORD DATA SHEETS

# GroundwaterField Data Record CentralMaine Power Company**Page~** 

# of_J_
Date: 

# I

# CH/a-iLlt0 

# = IEnd:)/:

# ao J .-------........ 

# P · t· 

# I O'Connor

fOJeC • .__

## ----;::::====~ 

# &Viw- tom Project Number: ;:I

# ======:::;:::~ Location Activity: 

# IStart: 

## /();$ 

## Field Duplicate Collected ID: 

# I I\)

# ·a Sample Location: Field 

# QA- Data: 

# D

WaterLevel/Well Data PID Reading at Wellhead:.

___ _ PID Background Reading:

___ _ Measured Historical Top of Top of

Well Depth
Depth to Water

# l~3.<to?JKJ h6.:PFtl

Depth to Screen 

# I
Top Ft 

# I 

# oDM DO Protective Casing Stickup 

# I Ft 

# I Protective Casing! 

# I Ft 

# I
(from ground)
t....------J. Well Differential ..__

# ----...J.

Well Material
Well Diameter 

# D PVC 

# D SS 

# D Other 

# D
4" 

# ell
Other

## (t

HeigbtofWater 

# I Ft

# I**X~** M6UF0(21 Column 2.46 UFt (4"") 5.60 UFt (6") Length of Ft

# I _UFt(_") L/Purge Vol

L I Total Purged Well Integrity Good Protective Casing Inta Well Lock

# ~~§ Screen
Middle of Ft 

# I

Screen Allowable Drawdown Max Allowed Depth.to Water Pump Set Depth 

# I

Purge Data Historical Purge Rate Historical Sampling Rate Purge Rate Time(min) 

### (): 0{) Flow Rate (ml/min) Purge Vol (lite!S) Depth to Water (ft)



### . Temp("C) Spec. Cone!. (umbo/em) pH(unils) Turbidity (ntu) DO (ppm)
Time(min)**~;6T)** Flow Rate (mllmin) 

## 1 

# nn.d\, J 1tt11 Purge Vol (liters) Depth to Water (ft)

### 15.n~ Temp("C)**r~:t}()** Spec. Com!. (wnho/cm) 

## 4l..o I pH(units) (n. 

## 'd.:l Turbidity (ntu) 

### /. j 

## 0 DO (ppm) 

## .:>.1<1.. Equipment Documentation D con Fluids Used Purging Dawn Deionized Water HNO,JDI Water Potable Water TSP Solution None Methanol Solution 

### Analytical Parameters

## ~PCBs

# ~ VOC• Method 8080 8021



### Weather Conditions/Notes: Filtered No No 

### Sampling Rate 

## c:::; 

# .nh**IO~Oi>** 

# J<:m) f('j () MA,f..j

### t-1/l )OO'M/t-/ u/\ 

## .'-f

."&"") J 

### I_"'). t;::)

### ~~- 

## 0'7' ...,1 

## IL/C:,**}~** 

### ,c.:,{ p f(o? 

## '-/(o 0 

## LJ**lc;~** (o'l.. 

# q t_, :l. 

## I G,. 

## F-1

LLf5 

## I**i~** 

## q.., 

# /.-,-, /.CJS ;:;}.()-)

J1



## .... J&I/"lXJ II 

## " -,..:u= r/1

-../ " ()11 

## rrf-0!-V 

## n .aJ/ l.jJJ.J'-/ /'\ 

### \_),1) 

## hf

## I X..

"" I I

### .I.~ :J)'""' 

## - /

### ~~ ../


### Purging

Bailer PVC/Silicon Tubing Teflon/Silicon Tubing Air Lift YSIFJowCell

Preservation None/Chill Volume Req'd 2-liter HCLIChill 2 VOAvials

0 

# 0 Sample Observation

.-:::) () :C51) 

## /{)f.. •AA I _/

### uV1.



# TS.-b'\

. f.;;;)., 

# -r-:;

'-fC.o 

## Cp-:::fl J o:::;L- 

### ;:)_,}?, Clear Colored Cloudy Turbid Odor Other Historical Data (see notes)**S~ling** 

### W!L Equip Used Waterra

# ~ Electric Cone!. Probe In-Line Filter Float Activated Press/Vac Filter Interface Probe Other Number ofFilters Used

Sample Bottle JD Numbers '''< I

## Groundwater Field Data Record Project: 

# IO'Connor 

# ...__--;::::====:::::=: Sample Location: 

# I)'I\ 

# IN

- low

# A CentralMaine Power Company 

## Project Number: 

# I**~::;:::=~** Location Activity: 

# I Start: 

# 9: 

# dO Page

# _l_ of

# _j_
Date:

::::;;:1

# :::;:oq::;;;J;i:~r=j (::::0:::::1 

# IEnd: 

# 9 ;- 

# '15 I
Field QA Data: 

# 0

I 

## Field Duplicate Collected ID: 

# I 

# tJ o

.......... 

### Water LeveJJWell Data PID Reading at Wellhead:.

____ _ PID Background Reading:

__ _ Top of
Well Depth 

# rinj

Depth to Water o.ooFtl Depth to Screen 

# 5;;L Ftl Top Height ofWater Ft

# I
X

## ~ 0.06UA0'1 Column 2.46 UFt (4") 5.60 UFt (6") Length of Ft

# I _UFt(_'') Screen
Middle of Screen 

### Purge Data

Time(min) Flow Rate (ml/min) Purge Vol (liters) Depth to Water (ft) Temp("C) Spec. Cond. (umbo/em) pH (units) Turbidity (ntu) DO (ppm)
Time(min) Flow Rate (ml/min) Purge Vol (liters) Depth to Water (ft) Temp(°C) Spec. Cond. (umbo/em) pH (units) Turbidity (ntu) DO(ppm) Ft 

# I Allowable Drawdown


### Historical Purge Rate Purge Rate**(Y-:z>~O()** 

## 750ML/W\. 

## \ .\1 

## 'l IL\AV 

# LP 

# ta**)~~** 

### %('\( 

### I 0 

## .c:::; I 

## "(\ nfl' 

## ?/**~yq** 

## (\**~1'** '}JJ**.~** 

## '7. 

## "39 '04

- /fi 

### \J\}-1'y 

## .:1"-f·( 17**~**



# .. '14 \ I})

I 

## V---"'

Equipment Documentation Decon Fluids Used Purging Dawn 

### Sampling Peristaltic Pump Redi Flow II Bailer Protective Casing Stickup 

# I Ft 

# I (from ground) 

## .__ 

# ____, Protective Casing! 

# I Ft 

# I
Well Differential '------'

L1 Purge Vol

L I Total Purged

Max Allowed Depth to Water Well Material
Well Diameter 

# [lJ PVC 

# [X]2" 

# oss DOther 

# 04" DOther

Y N NA WelllntegrityGood

## ~**~~** Protective Casing Intact

. Well Lock 

# Neu)IJ r.R.J..) 

# io

- Pump Set Depth ,.-----_,F...,t 

# I

Historical Sampling Rate Sampling Rate Sample Observation

Purging Clear Colored Cloudy Turbid Odor Other Historical Data (see notes)



### Sampling W/L Equip Used

In-Line Filter Float Activated Press/Vac Filter lnterfuce Probe Deionized Water HNOy'DI Water Potable Water TSP Solution None PVC/Silicon Tubing Teflon/Silicon Tubing Air Lift 

# §Waterra 

# ffi

Electric Cond. Probe

Other Number ofFilters Used

Methanol Solution 

### Analytical Parameters

# ~ PCBs 

# tJ

VO<> Method 8080 8021



### Weather Conditions/Notes: Filtered No No YSI Flow Cell

Preservation None/Chill HCUChill Volume Req'd 2-liter 2 VOAvials Sample Bottle ID Numbers I

I ·-.L

.

### - 

# CentralMaine Power Company Project Number:!..--**~-Q..,..a-3-.-!);.--Q--.** 

## Groundwater Field Data Record 

## Project: 

# I**o·c~nnor 1---::===;::::::::~**  

## Sample

# ~ocation: 

# Ilh'vl

# ~ I

# o

# G'

# B Location Activity: 

# I Start:

# 9:8 D
Field Duplicate Collected ID: 

# lM S

# t1 

# 50 . "**·'·.'~** 

## Field QA Data: 

# 0 Pagei..ofL Date: 

# l'ib

# 1/J6 

# = IEnd: 

# t a

... d" (}" 

# =

WaterLevel/WeD Data PID Reading at Wellhead:.

____ _ PID Background Reading:.

__ _ Measured Historical Top of Riser Well Depth 

# I

# 71 Ftl 

# D [K] [XJ Top of ring' Protective Casing Stickup 

# I Ft 

# I (from ground) ._ ___ .......;......J. Protective Casing/ 

# I

Well Differential Depth to Water

# l-r1·~ Ftlf\-11!Je 

# D D Well Material 

# oss**DOther;~** "**~:th** to Screen 

# I Ft

# I

Ft 

# I X

### ~ 0,06

# lJFt (2") '-----...J. 

# 2.46lJFt (4'') Height ofWater 

# I

Column Length of Screen 5.60

# lJFt (6") .------::Ft..,,

. , ·. _lJFt(_") 

# I

Middle of 

# I Screen:
'· 

### Purg..,Data

. ·<. Time(min) Flow Rate (mllmin) Purge Vol(liters} Depth to Water (ft) Temp("C) S,..:Cond. (umbo/em) pH (units) Turbidity (ntu) DO(ppm)
Time(min) Flow Rate (mllmin) Purge Vol (liters) Depth to Water (ft) Temp ("C) lip& Cond. (umbo/em) pH(units) Turbidity (ntu) DO(ppm) Allowable Drawdown

# ~storical PurgeRate Purge Rate 

# n ; .t:' ".1

. 

## ./J (J

i '. 

### 0 l. 

# Q·, (.....,
[..(;(.71-.



# rp.,

4 

# ·u-r \If (. 

## C1

Equipment Documentation D con Fluids Used Purging Dawn Deionized Water HNOyDl Water Potable Water TSP Solution None Methanol Solution 

### Analytical Parameters 

# /V1.5 fVlS0

.**~** PCBs 

# 8

voc. Method 8080 8021 Filtered Preservation No None,Chill No HCLChill



### Weather Conditions/Notes: ( 

# e_ u("" ? I) 

# 0 L!Purge Vol
LI Total Purged

Max Allowed Deptll_'fo Water

···t ?',,,·:··· Well Diameter

Well Integrity Good Protective Casing Intact Well Lock

\,\ 

# 04" DOther 

## d

# ~a§ Pump Set Depth 

# I Ftr

HistOricai

# ~~piing Rate ·' 

### Sampling Rate 

# 'f. t;"'D 

# tvtl/M Sample Observation If) 

# ,c; ·Til?1J



# u ""1 I ( --17 ' • 'V 0



## ll

Purging (**,c;(~** Clear

· Colored-9 Cloudy Turbid Odor Other Historical Data (see notes)



### Sampling W/L Equip Used 

# §Waterra

### ~ Electric Cond. Probe In-Line Filter Float Activated Press/Vac Filter lnterfuce Probe Other NumberofFilters Used


# w-rt/ vvtvMe.,.
Volume Req'd Sample Bonle ID Numbers 2-liter 2 VOAvials

# GroundwaterField Data Record CentralMaine Power Company Project:**~...1**

# o_·c_o_nn_o_r

______ __,J 

# .-------__, Project Number:

L-1

# -------l Sample Location: Field 

# QA Data: 

# I**~** t0

# -020 

# U? Location Activity: 

# IStart: 

# /0:

# 5?-5 

# I 

# 0 Field Duplicate Collected ID: 

# I /\) o 

# I Page_l_orJ Date: 

# I lf -dd--lt>

# ~ 

# IEnd: 

# ll**~**

# d.-0 :

Well Depth
Depth to Water

# ~=th to Screen ._I

____ F...Jt

I 

### PID Reading at Wellhead:.

___ _ PID Background Reading:.

__ _

# ~5 DO Protective Casing Stickup 

# I Ft 

# I
(from ground) '-·

### -----1. Protective Casing/ 

# I Ft 

# I
Well Differential 

### ..._ 

# ______.
Well DPVC Material 

# D Other

Well Diameter 

# 02" DOther

Height ofWater 

# I Ft 

# I X

## ~ 0.06 uFt (2") ColWTDJ

. . 2.4611Ft(4'') 5.60 11Ft (6") Length of Ft 

# I

_ UFt {_") L/PurgeVol
L I Total Purged Well Integrity Good Protective Casing Intact Well Lock 

### Screen

## :===::;;;~- Middle of Ft 

# I

Screen

. Allowable Drawdown Max Allowed Depth to Water Pump Set Depth

.... 

# I

____ Ft_.l


## PurgeData Historical Purge Rate

------ Historical Sampling Rate Sampling Rate Purge Rate Time(min) 

## 0.0 c.:::> Flow Rate (mllmin) Purge Vol (liters) Depth to Water(ft) 

# s Temp("C) Spec. Cond. (umbo/em) pH(units) Twbidity (ntu) DO (ppm)
·Timc(min) 

### l!0'.6D Flow Rate (ml/min) ({)()""'(/""" Purge Vol Oiters) I Depth to Water (ft) 

### I 0 .C1< Temp("C) 

## I ()

. 

## I:<)CK' Spec. Cond. (umbo/em) 

## L; 2,((:) pH(units) 

## {.P.Cc7 Twbidity (ntu) 

## I.{%-. 1') DO(ppm) 

## /.'10 Equipment Documentation

econ Fluids Used Purging

Dawn Deionized Water HNO,IOI Water Potable Water TSPSolution None ¥ethanol Solution 

## Analytical Parameters

# ~ PCBs 

# tj**v~** Method 8080 8021



## Weather Conditions/Notes: Filtered No No 

## Lf5:ao I c')/)., \ ) tM I ( 

### [..p,... "\ 

### f()_qt::;-' 

## (\ "'\ \J2.-C-'' v 

### I I**ri~** 

## \, 

## q 

## '7.-z..-::i**~** 

## /""1"'-V F- 

### (, fl. -, 

### ..... 

## '**-~q,~ 1.7~**  

### Purging

Bailer PVC/Silicon Tubing Teflon/Silicon Tubing AirLift YSI Flow Cell

Preservation Nonc/Chill HCUChill Volume Req'd 2-liter. 2 VOA vials 

### Sample Observation Clear Colored Cloudy Twbid Odor Other Historical Data (see notes)



### SI!WPling W/L Equip Used Waterra

## ~Electric Cond. Probe In-Line Filter Float Activated Press/Vac Filter · Interface Probe

Number ofFilters Used

Sample Bottle JD Numbers I Other

## CentralMaine Power Company 

## Groundwater Field Data Record 

# Project: 

# I O'Connor 

# Sample Lo'-c-at-io-n:--;::1 

# b==\v=-=;5=o:::;::/

# ~ Project Number: 

# I Q

# 1 f) 

# g 

# 5" 0 Location Activity: 

# I Start: 

# 1 d ;

# [;<) Field Duplicate Collected ID: 

# l j\J

# v Field QA Data: 

# D Page_LofL Date: 

# I'1@ 

# J/ I() 

# := IEnd:[) 

# :1-b"**~**

Water Level/Well Data PID Reading at Wellhead:.

____ _ Measured Historical Top of Riser Top of 

### PID Background Reading:

__ _

Well Depth 

# rin:l Protective Casing Stickup 

# I Ft 

# I (from ground) 

## ..__ 

# ___......

# V~-'10Ftl**~** 

# w [il Protective Casing! 

# I Ft 

# I
Well Differential

.._ ___ --J Depth to Water 

# I7·Cfttl; 

# D D Well Material 

# [Z] PVC 

# oss DOther 

# 04" DOther

## ~;th to Screen 

# I Ft 

# I

Height ofWater 

# I

Column Length of Screen
Middle of Screen Ft 

# I X 0.06 lJFt (2"} 2.46lJFt (4") 5.60 lJFt (6") _UFt(_")

Allowable Drawdown L/ Purge Vol
LlTotal Purged

Max Allowed Depth to Water Well Diameter 

# [K]2"

Well Integrity Good Protective Casing Intact Well Lock

# ~§§
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# I

PurgeData Historical Purge Rate Purge Rate Historical Sampling Rate Sampling Rate Sample Observation Time(min) 

# a Flow Rate (mYmin) 

### ) \6 D Purge Vol (liters) Depth to Water (ft) Temp("C) 

## \'6 · 

## t DSpec. Cond. (umbo/em) 

## /) lJ L-. pH (units) Turbidity (ntu) DO(ppm) 

# /**_q~** Time(min) 

## '15_ Flow Rate (mYmin) 

# qo Purge Vol (liters) 

### .... Depth to Water{ft) <;<

### ·~ 

# J Temp("C)**~** 

## . 1 lo Spec. Cond. (umbo/em) 

## I**(/~** pH(units)**r;r~** • (J Turbidity (ntu)**'\(.·~1·** DO(ppm)**C::.·\1~** 

### Equipment Documentation D con FlUids Used P ging ·Dawn· Deionized Water HNOJI Dl Water Potable Water TSP Solution None Methanol Solution 

### Analytical Parameters

# ~ PCBs 

# Ej
voc. Melhod 8080 8021



### Weather Conditions/Notes: Filtered No No 

## ll> IS {Q() 

### 'QU



# .. fo 1 

## 1\1 

# o.tvz

.. 'I) 

# t () c; 

# :-r'X 111 Y'· ,.
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## ..; .Vf!J...**~-3<i.** 

### pling Purging Peristaltic Pump Redi Flow II

PVC/Silicon Tubing Tetlo111Silicon Tubing Air Lift YSIFiowCell

Preservation None,Chill Volume Req'd 2-liter HCLChill 2 VOA vials



### 0 

## o.q<J

\ 

# .J 

# r Clear Colored Cloudy Turbid Odor Other Historical Data (see notes)



### Sampling W

### !L Equip Used Waterra

### ~ Electric Com!. Probe In-Line Filter Float Activated Press!Vac Filter Internee Probe Other Number ofFilters Used

Sample Bortle lD Numbers

# ~·

## GroundwaterField Data Record CentralMaine Power Company 

## Project Number: 

# I..__

____ __, Page _/_ of 

# j_
Date: 1

.. 

# i.f-;< 

# 1- /0 

## Project: 

# IO'Connor**...._____--;:=====~** 

# IN\ U) 

# -50 

## d.- 

# I Location Activity: 

# I Start: //: () 

# D SampleLocation: 1

### End:

# /J 

# :l:fo
Field 

## QA Data: 

# 0 Field Duplicate Collected ID: 

# l j\) 

# o
Water Level/WeD Data PID Reading at Wellhead:

____ _ PID**BackgroundRe~~it):g:**

### __ _ Measured Historical Top of Top of

# ~1\1\.

# eo.. s,o 

# r-e.

# d
Well Depth

Depth to Water

Depth to Screen 

# I

Top ;:-

## ==::::;~ Height ofWater 

# I
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0.06 UFt (2") 2.46 UFt (4") 5.60 UFt (6") _UFt(_")

Allowable Dmwdown Protective Casing Stickup,.-- 

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# 1- O \ Ft 

# I (from ground) 

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MaKAIIowed Depth to Water Well Material
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# I

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## 51..2. Temp("C). Spec. Cond. (umbo/em) pH (units) Turbidity (ntu) DO(ppm)
Time(min) 

## 0<.!:00 Flow Rate (ml/min) 

### /(JJ YVIL...f (N\ Purge Vol (liters) Depth to Water (ft) 

## 11 d..4 Temp ("C) 

## '1. foV Spec. Cond. (umho/cm) 

## .;liD pH (units) Turbidity (ntu) 

### ;.2,/(_") DO(ppm) 

## l. 5'6. Equipment Documentation Decon Fluids Used Purging Dawn Deionized Water HNO.v'Dl Water Potable Water TSP Solution None Methanol Solution 

### Analytical Parameters

## ~ PCBs 

# tj VOC• Method 8080 8021



### Weather Conditions/Notes: Filtered No No**-~!()U** 

## /0; 

## 07.:J ::LSOVV\.d 11Y1 

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### Sampling Purging Sampling W 

### /L Equip Used Waterm

### ~ Electric Cond. Probe Peristaltic Pump Redi Flow II Bailer PVC/Silicon Tubing Teflon/Silicon Tubing AirLift YSI Flow Cell

Preservation None/Chill HCUChill Volume Req'd 2 liter 2 VOAvials In-Line Filter Float Activated Press/Vac Filter Interfilce Probe

Number ofFilters Used

Sample Bottle ID Numbers I Other

# Groundwater Field Data Record CentralMaine Power Company 

## Pagel_of_t Date: 

# I

# '1/iJ/1 (J 

## Project: 

# I O'Connor 

# I**'-----;:::::====~** 

## Sample Location: 

# I \f\1 ftJ 

# -So3 

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# IQ').Q 

# "35 0 

# IEnd: 

# 11. : .CJ)J



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# D Location Activity: 

# I Start: 

# /2- :Q 

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.__I

## -~.N....::._:():;__

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## ~~:th to Screen ._I

____ F_.t

I Height ofWaterl r------=Ft,-,1 X Column

. . Length of Screen
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Allowable Drawdown 

### PID Reading at Wellhead:

___ _ PID Background Reading:

__ _ Top of Top of 

# ri"J**~** 

# DO Protective Casing Stickup 

# I Ft 

# I
(from ground) L...

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# I Ft 

# I

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# IKJ PVC 

# oss DOther 

# 04" DOther

Ll Purge Vol

L I Total Purged

Max Allowed Depth to Water Well Diameter 

# [812"

Well Integrity Good Protective Casing Intact Well Lock 

# ®§§

Pump Set Depth ._I

____ Ft_,l


### Purge Data Historical Purge Rate Purge Rate Historical Sampling Rate Sampling Rate Sample Observation Time(min) 

## rJ Flow Rate (mllmin) Purge Vol (liters) 

### " Depth to Water (ft) 

## "'7' 

# 7 Temp("C) 

## >< . ' . Spec. Cond. (umbo/em) pH (units) Turbidity (ntu) DO(ppm) 

# IJ , VJ (
Time(min) 

### 1],.£:; Flow Rate (mllmin) 

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### t: •

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# J.O ·" EquipmentDocumentation DeconFluids Used Purging Dawn Deionized Water HN03 /DI Water Potable Water TSP Solution None Methanol Solution 

### Analytical Parameters

# ~C&**~** VOC> Method 8080 8021 Filtered No No 

### ) {) 

# )c:; I(/ () 

## IVO I(, 

## 0 v 

## 17-f.:lq ( •0 

## '1


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Preservation NoneiChill HCUChill Volume Req'd 2-liter 2 VOAvials !')(} Clear 

# s+ lil 

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(see notes) 

# r**~17**

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Number

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### () 

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# c I

# e(,. ,--.' 0 

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# CentralMaine Power Company 

# Page_l ofL 

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# -3

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# UFt(_")

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_ :==:==;:::Ft 

# I Middle of Screen Allowable Drawdown 

### PurgeData :,Historical Purge Rate Purge Rate Time(min) Flow Rate (ml/min) Purge Vol (liters) Depth to ..yater (ft) Temp("C) Spec. Cond. (umbo/em) pH (units) Turbidity (ntu) DO(ppm)
Time(mln) 

# 11< Flow Rate (ml/min) 1 

## cJ# Purge Vol (liters) Depth to Water(ft) 

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## CJ ; 

## \.1 fl Spec. Cond. (umbo/em) 

# - q {:

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## '~ll" DO(ppm) 

# Yl ·'IX Equipment Documentation Decon Fluids Used Purging Dawn Deionized Water HNOyDI Water Potable Water TSP Solution None Methanol Solution 

### Analytical Parameters

## ~ PCBs 

# tj**v~** Metllod 8080 8021 Filtered No No 

### r{t)**l~b** 

# u
. f/_·'1:'

## 0•. Q. 

# --M 

# a

-Q 

## I 

# ['". IJ.I> "'{..}.., 'I**\A.~JL.**

Preservation None,Chill HCLChill



### Weather Conditions/Notes: 

# f\1\ v VI 

## J ( {' 

## $**~** u 

# r (\/", Top of 

# rinj**·~:~**

# Protective~:'::;,~:~ .... I

____ Ft_,l

# P~:~~~~;!~~~ ._I

____ Ft_,]

# '~~~**~::!rial ~c**  

# D
ss 

# D Other

# ~ 

# D**~ ~** 

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# D 4" 

# D Other·.· :

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L I Total Purged

Max Allowed Depth to.:Water Well Diameter

Welllntegrity.Good Protective Casjriifintact Well Lock ·



### Historical Sampling Rate Sampling Rate

\ p:

# ~§§ Punip Set Depth 

# I

Sample Observation Clear Colored Cloudy Turbid Odor Other Historical Dam (see notes)

:;. 

## <-vI II!C- 1-t 

## J

r-v**~ ~f"\1'4**  

## If"

Purging

Volume Req'd

2-liter 2 VOA vials .,/



### Signature:Sampling WIL Equip Used Watena

## ~ Electric Cond. Probe In-Line Filter Float Activated Press/Vac Filter lnterfuce Probe ·Other Number ofFilters Used

Sample Bottle ID Numbers I



# • 

# '··· n

## Groundwater Field Data Record Central Maine Power Company 

## Project Number: 

# ] Project: j. O'Connor

### t__--;::=======~ 

## Sample

## ~.9eation: 

# I MvJ 

## <=f:J'?;.8 Location Activity: 

# Istart: 

# lex-' 

# s$1 I)\Je 

# I Field QA Data: 

# D Field Duplicate Collected ID: Page_/ 

## of_l Date: 

# I Lj

# ~~ 

# !{ 1() 

# I I End: 

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____ _

## ~d-~1 Topof Topof 

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__ _ 

# l5o,o;tl 

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# I Ft 

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## ~ 

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# r 0.06 UFt (2"} 2.46 UFt**(4'~** 5.60 Uft (6'1 _UFt(_")

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Mal< Allowed Depth to Water Well 

# IX] PVC Material
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Well Integrity Good Protective Casing Intact Well Lock 

# oss DOther 

# 04" D<nher

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# I

Purge Data 

### Historical Purge Rate Purge Rate 

### Historical Sampling Rate Sampling Rate Sample Observation Time(min} Flow Rate (f!1Vmin)**Pui~** Vol (liters) Depth to Water (ft) Temp("C) Spec. Cond. (umltolcm)**pH(UJ_~its)** Turbidity (nru) OO(ppm)
Time(min) 

### :25;()0 Flow Rate (mlfmin) 

### c:::;0 IV'\ 

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## N, tllTemp("C} 

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### EquipmentDocumentation

. DeconFluids Used P\lrging Dawn Deionized Water HNOJIDI Water Potable Water l'SP Solution None

. Methanol Solution 

### Analytical Parameters Method 8080 8021



### Weather Conditions/Notes: Filtered No No**~cY** 

## cD

.**~;"'liD** 

## \

. 

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..LClear Colored Cloudy Turbid Odor Otber Historical Data (see notes)



## (i"'\\e:t.-· '\ "' ,.') {(;,L.j_l 

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### Purging

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Pn:servation None,Chill HCLChill Volume Req'd 2-liter 2 VOA vials ()\J.V 

### ) 

# s,rv '\-"'



### Sampling 

### W!L Equip Used

# ~ Waterra

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Sample Bol!le ID Numbers



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# APPENDIX D: LABORATORY INFORMATION

# CENTRAL MAINE POWER CO. O'CONNOR SITE SD2185

KATAHDIN ANALYTICAL SERVICES, INC. 600 TECHNOLOGY WAY SCARBOROUGH, ME 04074-Tw-

-- - i/ftWSi!"' -5**~~ ""~-,""**  =**~ ~~""'""'**  - ;;r -**~-** c:::**0~ ~**  .,_,

# ~**~a.11ai-l.~in. ~.I'\:N;A;Ii¥illiBA:.L**  S ER.VICES**"--"'::.~~~ ""~2.~<.,::::;:"'-.2:~**  -;_-**~ ~** **~ -~-~** **~~-**



### SAMPLE DATA PACKAGE

Nmntive Suppmting Documents Chain ofCustody Record Login Report



### SAMPLE DATA SUMMARY Report ofAnalytical Results



### VOLATILE DATA
QC Summary Sample Data Standards Data Logbooks and Supporting Documents



### PCB DATA
QC Summary Sample Data Standards Data Logbooks and Supporting Documents 

## TABLE OF CONTENTS Total number ofpages: 145


## 0000001
0000002 0000004 0000007 0000008

A0000001

1000001
1000002 1000030 1000045 1000053

2000001
2000002 2000012 2000026 2000047 to to to to

to

to to to to

to to to to Cert. No. E87604



## 0000003 0000006 0000007 0000009

A0000027

1000029 1000044 1000052 1000057

2000011 2000025 2000046 2000052

P.O. Box 540, Scarborough, ME 04070 • Tel: (207) 874-2400 • Fax: (207) 775-4029 • 600 Technology Way, 

### Scarborough, ME 04074 www.katahdinlab.com

# SAMPLE DATA PACKAGE

0000001

## SDG NARRATIVE KATARDIN ANALYTICAL SERVICES CENTRAL MAINE POWER CO. O'CONNOR SITE SD2185 Sample Receipt
The following samples were received on April22, 2010 and were logged in under Katahdin Analytical Services work order number SD2185 for a hardcopy due date ofMay 5, 2010.

KATAHDIN Sample No. SD2185-1 SD2185-2 SD2185-3 SD2185-4 SD2185-5 SD2185-6 SD2185-7 SD2185-8 SD2185-9 SD2185-10 SD2185-ll SD2185-12 SD2185-13 WOODARD & 

## CURRAN Sample Identification MW-501 MW-502 MW-503 MW-507A MW-508B MW-507AD MW-106A MW-106B MW-104B OW-201B FB-1 EB-1 TRIP BLANK
The samples were logged in for the analyses specified on the chain ofcustody fonn. All problems encountered and resolved during sample receipt have been documented on the applicable chain ofcustody fonns.

We certify that the test results provided in this report meet all the requirements ofthe NELAC standards unless otherwise noted in this narrative or in the Report ofAnalysis. Sample analyses have been perfonned by the methods as noted herein.
Should you have any questions or comments conceming this Report ofAnalysis, please do not hesitate to contact your Katahdin Analytical Services Project Manager, Ms. Shelly Brown. This narrative is an integral part ofthe Report ofAnalysis.

Organics Analysis
The samples ofWork Order# SD2185 were analyzed in accordance with "Test Methods for Evaluating Solid Wastes: PhysicaVChemical Methods." SW-846, 2nd edition, 1982 (revised 1984), 3rd edition, 1986, and Updates I, II, IIA, III, IliA, and IIIB 1996, 1998 & 

## 2004, Office of Solid Waste and Emergency Response, U.S. EPA, and/or for the specific methods listed below or on the Report ofAnalysis. Cert. No. E87604



### P.O. Box 540, Scarborough, ME 04070 • Tel: (207) 874-2400 • Fax: (207) 775-4029 • 600 Technology Way, Scarborough, ME 04074

.. .-, www.katahdinlab.com 

# Q 

# Q

# 0 0000/Z£"'"-"**~"'""~,-~';;!,"" ~~~~/"'**  "**~"-'\~ ~-«~** 

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## ;:;;;:**:~~,-~~~~~ :~~-_:_=~i----"~~** **--0.~~::-**


## 8260B Analysis Cert. No. E8760·1



## Sample SD2185-8 was used for the matrix spike (MS) and matrix spike duplicate (MSD), as per client request.
The reported percent recovery acceptance limits for the Laboratory Control Samples (LCSs) are statistically derived for the full list ofspiked compounds. The recoveries ofthe spiked analytes in the LCS, Matrix Spike (MS) and Matrix Spike Duplicate (MSD) are compared to these acceptance limits. Katahdin standard operating procedure is to take corrective action only ifthe number ofspiked analytes in the LCS that are outside ofthe QC limits is greater than the DoD QSM allowable number ofexceedances. The LCS report consists ofthe full list ofspiked analytes, but only the client's list oftarget analytes are evaluated. Ifthe associated MS!MSD has greater than the allowable number ofexceedances, no corrective action is taken, as long as the LCS is acceptable.

8082 Analysis Samples SD2185-2, 4 and 6 had low recoveries for the surrogate DCB on one or both channels, which were outside ofthe laboratory nominal limits. Since the recoveries ofTCX were within the acceptance limits, the samples were not reextracted.
The closing calibration verification standard (CV) (files 7DD432) had a high response for Aroclor 1260 on channel A, as well as a high response for TCX on channel B. These responses resulted in %D's that were outside ofthe method acceptance limits of 15%. Since the responses were acceptable on the confirmation channels, the associated samples were not reanalyzed.
There were no other protocol deviations noted by the organics staff.

I certify that this data package is in compliance with the tenns and conditions ofthe contract, both technically and for completeness, for other than the conditions detailed above. Release ofthe data contained in this hardcopy data package has been authorized by the Operations Manager or the Quality Assurance Officer as verified by the following signature.

Leslie Dimond 

## <D<;.oro. )u 

## Quality Assurance Officer

P.O. Box 540, Scarborough, ME 04070 • Tel: (207) 874-2400 • Fax: (207) 775-4029 • 600 Technology Way, Scarborough, ME 04074 www.katahdinlab.com 

# QQQQ()

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# v
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# v

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5. Temperature Blanks present? If not, take Temp (0 

### C}: 

# s:& temperature of any sample w/IR gun. 

# v Samples received at <6 

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# ,__- Note: Not required for metals analysis. The lack of ice or ice packs (i.e. no attempt to
/ 

### Ice packs or ice present? 

# v begin cooling process) may not meet certain regulatory requirements and may invalidate certain data. If temp. out, has the cooling process begun (i.e. Note: No cooling process required for metals ice or packs present) and sample collection times analysis. <6hrs., but samples are not yet cool? 6. Volatiles free of headspace: 

### Aqueous: No bubble larger than a pea 

### Soil/Sediment: Received in airtight container?
Received in methanol?
Methanol covering soil?
7. Trip Blank present in cooler?
8. Proper sample containers and volume?
9. Samples within hold time upon receipt? 10. Aqueous samples properly preserved? Metals, COD, NH3, TKN, 0/G, phenol, TP04, N+N, TOC, ORO, TPH -pH <2 Sulfide- >9 Cyanide

- pH >12
*Log-In Notes to Exceptions: document any problems with samples or discrepancies or pH adjustments



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# v /Note: No cooling process required for metals ice or packs present) and sample collection times <6hrs., but samples are not yet cool? analysis.

6. Volatiles free of headspace: Aqueous: No bubble larger than a pea 

# v--
Soil/Sediment: 

## / Received in airtight container? 

# / Received in methanol?
Methanol covering soil? 

# /

7. Trip Blank present in cooler? 

# /

8. Proper sample containers and volume? 

# /

9. Samples within hold time upon receipt? 

## /

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# v Metals, COD, NH3, TKN, 0/G, phenol, (/" 

### TP04, N+N, TOC, DRO, TPH -pH <2 

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- pH >12 <../



## * Log-In Notes to Exceptions: document any problems with samples or discrepancies or pH adjustments

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## L/1-- Temp (0 

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# t..-



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### 1Note: No cooling process required for metals ice or packs present) and sample collection times 

# v <6hrs., but samples are not yet cool? analysis.
6. Volatiles free of headspace:

## ~ Aqueous: No bubble larger than a pea 

### Soil/Sediment: 

# v Received in airtight container? 

## / Received in methanol? 

# v ..__./ 

### Methanol covering soil?


## 7. Trip Blank present in cooler? 

# /

8. Proper sample containers and volume? .....,/

/ 

### 9. Samples within hold time upon receipt? 

# ../
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# v Metals, COD, NH3, TKN, 0/G, phenol, 

# v TP04, N+N, TOG, ORO, TPH -pH <2 ,_../ 

# v Sulfide- >9 

# ,..,



# - Cyanide- pH >12
*Log-In Notes to Exceptions: document any problems with samples or discrepancies or pH adjustments

QA-048

- Revision 1 - 04/16/2010**~K:::;;:"'- --:~~"-** **-:.,~~:~ ~** **"';~_,_ <~~-=~,)?£** 

# ~**~~ ~** **~ l~'ata~m~~~**  AN A;,UYTiq CAE SERWIG ES,

Bill (if different than above)
Sampler (Print 

### I Sign)


### LAB USE ONLY 600 Technology Way Scarborough, ME 04074 Tel: (207) 874-2400

Address

REMARKS:

__________________**~--------------------**

SHIPPING INFO: 0 FED EX 0 UPS 

### 0 CLIENT
AIRBILL NO:

-------------------------------- TEMP"C 

### 0 TEMP BLANK 

### 0 INTACT**~OMMENTS**

Date 

### I Time

Date I Time 

# CHAIN of 

# CUSTODY

Page_l_ of 

# J

Relinquished By: (Signature) Date 

### I Time Received By: (Signature)

Relinquished By: (Signature) Date 

### I Time Received By: (Signature) 

# cmocx:sJ

THE TERMS AND CONDITIONS ON THE REVERSE SIDE HEREOF SHALL GOVERNANALYTICAL SERVICES 

### Login Number: SD2185

Account: UTILIT001 

## Katahdin Analytical Services Login Chain of Custody Report (lno1) Apr. 23, 2010 09:40AM 

### Quote/Incoming:
NoWeb Page: 1 of 

### 2

Utility Shared Services Corporation 

### Login Information ANALYSIS INSTRUCTIONS CHECK NO. 

### Project: UTILITCMP001

Primary ReportAddress: Roy Koster Central Maine Power Co. 83 Edison Dr.
Augusta,ME 04336 Primary Invoice Address: Accounts Payable Utility Shared Services Corporation 70 Farm View Drive

New Gloucester,ME 04260 Report CC Addresses:

Lori Moreau Woodard & Curran 41 Hutchins Drive

Portland,ME 04102
Invoice CC Addresses·



### Laboratory Client Sample ID Sample Number

SD2185-1 MW-501

Matrix Product Aqueous 

### s SW8082-S Aqueous 

### s SW8260-S SD2185-2 MW-502

Matrix Product Aqueous 

### s SW8082-S Aqueous 

### s SW8260-S
SD2185-3 MW-503

Matrix Product Aqueous 

### s SW8082-S Aqueous 

### s SW8260-S SD2185-4 MW-507A

Matrix Product Aqueous 

### s SWBOB2-S Aqueous 

### s SW8260-S
SD2185-5 MW-5088

Matrix Product Aqueous 

### s SW8082-S Aqueous 

### s SWB260-S CLIENT PO# COOLER TEMPERATURE DELIVERY SERVICES EDD FORMAT PM PROJECT NAME QC LEVEL REGULATORY LIST REPORT INSTRUCTIONS

SDGID SDG STATUS PCB extract 1 L to 1m L

5.6, 5.8, 4.1 Client KAS027-XLS SMB O'Connor Site Ill

Email pdf and EDD to Lori. Email PDF to Roy. No HC.



### Collect Receive Verbal Due DatefTime Date PR Date Date Mailed

21-APR-10 11:25 22-APR-10 05-MAY-10

Hold Date (sholfesQ Bottle Type Bottle Count Comments 28-APR-10 1 L N-Amber Glass 2 05-MAY-10 40mL Viai+HCI 3
21-APR-10 11:40 22-APR-10 05-MAY-10

Hold Date (sholfesQ Bottle Type Bottle Count Comments 28-APR-10 1 L N-Amber Glass 2 05-MAY-10 40ml Viai+HCI 3
21-APR-10 12:50 22-APR-10 05-MAY-10

Hold Date (sholfesQ Bottle Type Bottle Count Comments 28-APR-10 1 L N-Amber Glass 2 05-MAY-10 40mL Viai+HCI 3
21-APR-10 14:25 22-APR-10 05-MAY-10

Hold Date (sholfesQ Bottle Type Bottle Count Comments 28-APR-10 1 L N-Amber Glass 2 05-MAY-10 40ml Viai+HCI 3
21-APR-10 12:55

. 22-APR-10 05-MAY-10

Hold Date (sholfesQ · Bottle Type Bottle Count Comments 28-APR-10 1 L N-Amber Glass 2 

# f}Jv 05-MAY-10 40ml Viai+HCI 3

# 000000~ANALYTICAL SERVICES 

### login Number: SD2185

Account: UTILIT001 

## Katahdin Analytical Services login Chain of Custody Report (lno1) Apr. 23, 2010 09:40AM Quote/Incoming: NoWeb Utility Shared Services Corporation Project: UTILITCMP001



### Laboratory Client Collect Receive Verbal Sample ID Sample Number Date/Time Date PR Date

S02185-6 MW-507AD 21-APR-10 14:25 22-APR-10

Matrix Product Hold Date {shortest) BoUle Type BoUle Count Aqueous 

### s SW8082-S 28-APR-10 1 L N-Amber Glass 2 Aqueous 

### s SW8260-S 05-MAY-10 40ml Viai+HCI 3
S02185-7 MW-106A 21-APR-10 09:45 22-APR-10

Matrix Product Hold Date {shortest) BoUle Type BoUle Count Aqueous 

### s SW8082-S 28-APR-10 1 L N-Amber Glass 2 Aqueous 

### s SW8260-S 05-MAY-10 40ml Viai+HCI 3
S02185-8 MW-1068 21-APR-10 10:00 22-APR-10

Matrix Product HoldDate (shortest) BoUle Type Bottle Count Aqueous 

### s SW8082-S 28-APR-10 1 L N-Amber Glass 2 Aqueous 

### s SW8260-S 05-MAY-10 40ml Viai+HCI 3
S02185-9 MW-1048 22-APR-1 0 11 :20 22-APR-10

.
Matrix Product HoldDate (shortest) Bottle Type BoUle Count Aqueous 

### s SW8082-S 29-APR-10 1 L N-Amber Glass 2 Aqueous 

### s SW8260-S 06-MAY-10 40ml Viai+HCI 3
S02185-10 OW-2018 22-APR-1 0 11 :20 22-APR-10

Matrix Product HoldDate (shortest) BoUle Type BoUle Count Aqueous 

### s SW8082-S 29-APR-10 1 L N-Amber Glass 2 Aqueous 

### s SW8260-S 06-MAY-10 40ml Viai+HCI 3
S02185-11 FB-1 21-APR-10 14:00 22-APR-10

Matrix Product HoldDate (shortest) BoUle Type BoUle Count Aqueous 

### s SW8082-S 28-APR-10 1 L N-Amber Glass 2 Aqueous 

### s SW8260-S 05-MAY-10 40ml Viai+HCI 3
S02185-12 EB-1 21-APR-10 14:00 22-APR-10

Matrix Product HoldDate (shortest) BoUle Type Bottle Count Aqueous 

### s SW8082-S 28-APR-10 1 L N-Amber Glass 2 Aqueous 

### s SW8260-S 05-MAY-10 40ml Viai+HCI 3
S02185-13 TRIP BLANK 22-APR-10 00:00 22-APR-10

Matrix Product HoldDate (shortest) BoUle Type BoUle Count Aqueous 

### s SW8260-S 06-MAY-10 40ml Viai+HCI 3



### Total Samples: 

### 13 TotalAnalyses: 

## 25 Page: 2 

### of 2



### Due Date Mailed

05-MAY-10

Comments

05-MAY-10

Comments

05-MAY-10

Comments MS/MSD

05-MAY-10

Comments

05-MAY-10

Comments

05-MAY-10

Comments

05-MAY-10

Comments

05-MAY-10

Comments



# CDOOOOY

# APPENDIX E: INFERRED OVERBURDEN GROUNDWATER CONTOUR MAP

# f



# - - 

# - I 

### I I I I I J I I 

# I I I ( 

### I I J 

### I 

# 1 ';:



# \

# ''

# " ' PTA 

# LEGEND:

FREE PRODUCT OIL MONITORING LOCATION

LONG TERM MONITORING LOCATION

MONITORING WELLS DECOMMISSIONED SEPTEMBER 2008
DESIGNATED AREA MARKERS

- SURVEYED BY EPRO 2002

-- · - · -- REVISED 10-SIDED DESIGNATED

------ SUPERFUND SITE BOUNDARY

------ GROUNDWATER CONTOUR

........

______ FLOW DIRECTION

50' 

### TOPOGRAPHIC INFORMATION IS APPROXIMATE. TOPOGRAPHIC INFORMATION HAS BEEN COMPILED FROM ORIGINAL SITE PLAN AND 1999 SURVEY OF REMEDIATED AREA

0 50' 100'



# --- - - 

# -- - BAR SCALE

1" = 

### 50' 

### CHECK GRAPHIC SCALE BEFORE 

### USING (/) 

# zo::: w::> co 0:::1-- 

# ::>Zo mo
..... 

# o:::uo w 

# >o:::N ow...J 1--- 

# o-<o::: w!i=:a.. 

# o:::o-< o:::z W:::::J 

# L&..o 

# Zo::: 

# " i: 

# ., 0 

### I**:::IE~** CJ9

w I**;;..:~** al< 

### o5 wo :li:U"l CJn WN IN CJN



### ::::El!: (.J[l_
;;..: aJ;;..: filal

### i3~ Ui<**w~** ClCl



### >-

## ~I!! a..-**~1/)** 

### Oc 

## oz a:::::J

### 0~ ZLL.I Zll.. O:::J 011) 

## 0

APPENDIXE

# APPENDIX F: SUMMARY OF OIL THICKNESS IN TWA II WELLS

## Appendix F Summary of Oil Thickness in TWA II Wells, April 2010

O'Connor Site, Augusta, Maine

OW-202B OW-302B OW-204B OW-301B RW-101 UM-1 (feet) (feet) (feet) (feet) (feet) (feet) 12/22/1997 0.32 0.13 0.03 NM 0.08 NM 1/22/1998 0.01 0.01 0 NM 0 NM 2/13/1998 0 0 0 NM 0 NM 3/17/1998 0 0 0 0 0 NM 5/22/1998 0 0 0 NM 0 NM 6/8/1998 0 0 0 0 0 NM 7/20/1998 0.05 0 0 0 0 0.07 8/31/1998 0.45 0 0 0 0.04 0.03 9/22/1998 0.6 0 0 0 0.25 0.01 10/29/1998 0.06 0 0 0 0.23 0 11/23/1998 0 0 0 0 0.04 0 12/31/1998 0 0 0 0 0.03 0 1/28/1999 0 0 0 0 0.01 0 2/26/1999 0 0 0 0 0.01 0 3/26/1999 0 0 0 NM 0.01 0 4/28/1999 0 0 0 NM 0.01 0 5/27/1999 0 0 0 0 0.03 0 6/22/1999 0.03* 0 0 0 0.15* 0 7/31/1999 0.09 0.23 0 0 0.19 0 8/31/1999 0.77 0.71 0.02 0 0.1 0 9/14/1999 0.02 0.49 0.02 0.25 0.43 0.02 9/21/1999 0.02 0.03 0.01 0 0.02 0 10/28/1999 0.01 0 0 0 0.01 0.01 11/30/1999 0 0.01 0 0 0.06 0 12/30/1999 0 0 0.02 0.02 0.29 0 1/31/2000 0.01 0.01 0.01 0.01 0.35 0.02 2/29/2000 0 0.01 0.02 0.01 0.31 0.02 3/27/2000 0.02 0.02 0.01 0.02 0.24 0.01 4/28/2000 0.01 0.02 0.01 0.01 0.06 0.01 5/31/2000 0 0 0 0 0.03 0 6/30/2000 0.16 0.15 0 0 0.23 0 7/31/2000 0.05 0.42 0 0 0.02 0 8/29/2000 0.01 0.07 0 0 0.02 0 9/6/2000 0.01 0.07 0 0 0.03 0 10/31/2000 0.11 0 0 0 0.13 0 11/30/2000 0 0 0 0 0 0 12/29/2000 0 0 0 0 0 0 1/26/2001 0 0 0 0 0 0 2/23/2001 0.02 0 0 0 0 3/29/2001 0 0 0 0 0.04 0 4/24/2001 0 0 0 0 0 0 5/30/2001 0.35 0 0 0 0.05 0 6/27/2001 0.05 0.05 0 0 0 0 8/3/2001 0.1 0.79 0 0 0.1 0 11/27/2001 0.09 1.25 0 0 0.05 0 12/27/2001 0.03 0.88 0 0 0 0 1/30/2002 0 0.41 0 0 0.1 0 2/28/2002 0 0.07 0 0 0.01 0 3/29/2002 0 0 0 0 0.01 0 4/30/2002 0.08 0.43 0 0 0.02 0 5/28/2002 0.03 0.39 0 0 0.01 0 6/27/2002 0.06 0.34 0 0 0.03 0 DATE

Central Maine Power (222350) MOM 2010 Annual Report F-1 April 2010

## Appendix F Summary of Oil Thickness in TWA II Wells, April 2010

O'Connor Site, Augusta, Maine

OW-202B OW-302B OW-204B OW-301B RW-101 UM-1 (feet) (feet) (feet) (feet) (feet) (feet) DATE

7/30/2002 0.08 1.55 0 0 0.08 0 10/28/2002 0.01 0 0 0.02 0.02 0 11/25/2002 0 0 0 0 0 0 12/31/2002 0 0 0 0 0 0 1/27/2003 0 0 0 0 0 0 2/28/2003 0 0 0 0 0 0 3/27/2003 0 0 0 0 0 0 4/15/2003 0 0 0 0 0 0 5/28/2003 0.1 0 0 0 0 0 6/26/2003 0 0 0 0 0 0 7/30/2003 0 0 0 0 0 0 11/26/2003 0 0 0 0 0 0 12/26/2003 0 0 0 0 0 0 1/26/2004 0 0 0 0 0 0 2/27/2004 0 0 0 0 0.03 0 3/29/2004 0 0 0 0 0 0 4/20/2004 0 0 0 0 0 0 5/27/2004 0 0 0 0 0 0 6/28/2004 0 0 0 0 0 0 7/27/2004 0.01 0 0 0 0.01 0 Oct-04 0 0 0 0 0.04 0 Nov-04 0 0 0 0 0.03 0 Dec-04 0 0 0 0 0 0 Apr-05 0 0 0 0 0.03 0 Jul-05 0 0 0 0 0.02 0 Aug-05 0.01 0 0 0 0 0 Sep-05 0.08 0 0 0 0.31 0 Oct-05 0.03 0 0 0 0.29 0 Jan-06 0 0 0 0 0.02 0 Apr-06 0 0 0 0 0.01 0 May-06 0 0 0 0 0 0 Jun-06 0.36 0 0 0 0 0 Jul-06 0 0 0 0 0 0 Aug-06 0 0 0 0 0 0 Sep-06 0 0 0 0 0 0 12/14/2006 0 0 0 0 0 0 4/24/2007 0 0 0 0 0 0 7/27/2007 0 skim 0 0 0.02 0 9/18/2007 0.01 skim 0 NM 0.12 0 12/28/2007 0 0 0 0 0 0 4/22/2008 0 0 0 0 0.01 NM 7/2/2008 0 skim 0 0 0 NM 9/2/2008 0.01 skim -- -- 0 -- 12/23/2008 0 0 -- -- 0 -- 4/23/2009 0.03 0 -- -- 0 -- 7/1/2009 0.04 0 -- -- 0 -- 9/1/2009 0 0 -- -- 0 -- 12/1/2009 0 0 -- -- 0 -- 3/1/2010 0.01 0 -- -- 0 -- 6/1/2010 0 0 -- -- 0 --
NM = Not Measured -- = Wells decommissioned September 2008. * = Measured as part of the VER System operation
Central Maine Power (222350) MOM 2010 Annual Report F-2 April 2010

# APPENDIX G: LABORATORY RESULTS REPORT

## Katahdin Analytical Services A0000001 

# SAMPLE DATA SUMMARY 

# PACKAGE

## Katahdin Analytical Services A0000002 KATAHDIN ANALYTICAL SERVICES- ORGANIC DATA QUALIFIERS

The sampled date indicated on the attached Report(s) of Analysis (ROA) is the date for which a grab sample was collected or the date for which a composite sample was completed. Beginning and start times for composite samples can be found on the Chain-of-Custody.


# u

*


## D

E

j 

## Indicates the compound was analyzed for but not detected above the laboratory Practical Quantitation Limit. Compound recovery outside of quality control limits.
Indicates the result was obtained from analysis of a diluted sample. Surrogate recoveries may not be calculable.
Estimated value. This flag identifies compounds whose concentrations exceed the upper level of the calibration range of the instrument for that specific analysis.
Estimated value. The analyte was detected in the sample at a concentration less than the laboratory Practical Quantitation Limit (PQL), but above the Method Detection Limit (MDL).

or


## J Used for Pesticide/Aroclor analyte when there is a greater than 40% difference for detected concentrations between the two GC columns.
B Indicates the analyte was detected in the laboratory method blank analyzed concurrently with the sample.
N Presumptive evidence of a compound based on a mass spectral library search.
A Indicates that a tentatively identified compound is a suspected aldol-condensation product.
P Used for Pesticide/Aroclor analyte when there is a greater than 25% difference for detected concentrations between the two GC columns. (for CLP methods only).

## Katahdin Analytical Services A0000003 Client: Utility Shared Serv Project: O'Connor Site PO No: Sample Date: 04/21/10 Received Date: 04/22/10 Extraction Date: Analysis Date: 29-APR-2010 13:44 Report Date: 05/04/2010 Matrix: WATER % Solids: NA 

## KATAHDIN ANALYTICAL SERVICES 

## Report of Analytical Results

Lab ID: SD2185-1 Client ID: MW-501 SDG: SD2185 Extracted by: Extraction Method: SWB46 5030 Analyst: TTC Analysis Method: SWB46 826GB Lab Prep Batch: WG76844 Units: ug/1

CAS# Compound Flags Results DF PQL Adj. PQL Adj .MDL 71-43-2 Benzene 

## u 1 1.0 1 1 0.3 108-90-7 Chlorobenzene 

## u 1 1.0 1 1 0.2 541-73-1 1,3-Dichlorobenzene 

## u 1 1.0 1 1 0.3 106-46-7 1,4-Dichlorobenzene 

## u 1 1.0 1 1 0.2 95-50-1 1,2-Dichlorobenzene 

## u 1 1.0 1 1 0.2 120-82-1 1,2,4-Trichlorobenzene 

## u 1 1.0 1 1 0.4 87-61-6 1,2,3-Trichlorobenzene 

## u 1 1.0 1 1 0.3 108-70-3 1,3,5-Trichlorobenzene 

## u 1 1.0 1 1 0.2 1868-53-7 Dibromofluoromethane 76% 17060-07-0 1,2-Dichloroethane-D4 88% 2037-26-5 Toluene-DB 92% 460-00-4 P-Bromofluorobenzene 95%
Page 01 of 01 S0283.D

## Katahdin Analytical Services A0000004 Client: Utility Shared Serv Project: O'Connor Site PO No: Sample Date: 04/21/10 Received Date: 04/22/10 Extraction Date: Analysis Date: 29-APR-2010 14:16 Report Date: 05/04/2010 Matrix: WATER % Solids: NA 

## KATAHDIN ANALYTICAL SERVICES 

## Report of Analytical Results

Lab ID: SD2185-2 Client ID: MW-502 SDG: SD2185 Extracted by: Extraction Method: SWB46 5030 Analyst: TTC Analysis Method: SWB46 8260B Lab Prep Batch: WG76844 Units: ug/1

CAS# Compound Flags Results DF PQL Adj.PQL 71-43-2 Benzene 

### u 1 1.0 1 1 108-90-7 Chlorobenzene 

### u 1 1.0 1 1 541-73-1 1,3-Dichlorobenzene 

### u 1 1.0 1 1 106-46-7 1,4-Dichlorobenzene 

### u 1 1.0 1 1 95-50-1 1,2-Dichlorobenzene 

### u 1 1.0 1 1 120-82-1 1,2,4-Trichlorobenzene 

### u 1 1.0 1 1 87-61-6 1,2,3-Trichlorobenzene 

### u 1 1.0 1 1 108-70-3 1,3,5-Trichlorobenzene 

### u 1 1.0 1 1 1868-53-7 Dibromofluoromethane 80% 17060-07-0 1,2-Dichloroethane-D4 87% 2037-26-5 Toluene-DB 92% 460-00-4 P-Bromofluorobenzene 94%
Page 01 of 01 S0284.D Adj.MDL 0.3 0.2 0.3 0.2 0.2 0.4 0.3 0.2

## Katahdin Analytical Services A0000005 Client: Utility Shared Serv Project: O'Connor Site PO No: Sample Date: 04/21/10 Received Date: 04/22/10 Extraction Date: Analysis Date: 29-APR-2010 14:47 Report Date: 05/04/2010 Matrix: WATER % Solids: NA 

## KATAHDIN ANALYTICAL SERVICES 

## Report of Analytical Results

Lab ID: SD2185-3 Client ID: MW-503 SDG: SD2185 Extracted by: Extraction Method: SW846 5030 Analyst: TTC Analysis Method: SW846 8260B Lab Prep Batch: WG76844 Units: ug/1

CAS# Compound Flags Results DF PQL Adj.PQL 71-43-2 Benzene 

## u 1 1.0 1 1 108-90-7 Chlorobenzene 

### u 1 1.0 1 1 541-73-1 1,3-Dichlorobenzene 

### u 1 1.0 1 1 106-46-7 1,4-Dichlorobenzene 

### u 1 1.0 1 1 95-50-1 1,2-Dichlorobenzene 

### u 1 1.0 1 1 120-82-1 1,2,4-Trichlorobenzene 

### u 1 1.0 1 1 87-61-6 1,2,3-Trichlorobenzene 

### u 1 1.0 1 1 108-70-3 1,3,5-Trichlorobenzene 

### u 1 1.0 1 1 1868-53-7 Dibromofluoromethane 82% 17060-07-0 1,2-Dichloroethane-D4 85% 2037-26-5 Toluene-DB 91% 460-00-4 P-Bromofluorobenzene 93%
Page 01 of 01 S0285.D Adj .MDL 0.3 0.2 0.3 0.2 0.2 0.4 0.3 0.2

## Katahdin Analytical Services A0000006 Client: Utility Shared Serv Project: O'Connor Site PO No: Sample Date: 04/21/10 Received Date: 04/22/10 Extraction Date: Analysis Date: 29-APR-2010 15:19 Report Date: 05/04/2010 Matrix: WATER % Solids: NA 

## KATAHDIN ANALYTICAL SERVICES 

## Report of Analytical Results

Lab ID: SD2185-4 Client ID: MW-507A SDG: SD2185 Extracted by: Extraction Method: SW846 5030 Analyst: TTC Analysis Method: SW846 8260B Lab Prep Batch: WG76844 Units: ug/1

CAS# Compound Flags Results DF PQL Adj .PQL Adj .MDL 71-43-2 Benzene 

## u 1 l.O 1 1 0.3 108-90-7 Chlorobenzene J 0.8 l.O 1 1 0.2 541-73-1 1,3-Dichlorobenzene 2 l.O 1 1 0.3 106-46-7 1,4-Dichlorobenzene J 0.9 l.O 1 1 0.2 95-50-1 1,2-Dichlorobenzene 2 l.O 1 1 0.2 120-82-1 1,2,4-Trichlorobenzene 

## u 1 l.O 1 1 0.4 87-61-6 1,2,3-Trichlorobenzene 

## u 1 l.O 1 1 0.3 108-70-3 1,3,5-Trichlorobenzene 

## u 1 l.O 1 1 0.2 1868-53-7 Dibromofluoromethane 77% 17060-07-0 1,2-Dichloroethane-D4 90% 2037-26-5 Toluene-DB 90% 460-00-4 P-Bromofluorobenzene 93%
Page 01 of 01 S0286.D

## Katahdin Analytical Services A0000007 Client: Utility Shared Serv Project: O'Connor Site PO No: Sample Date: 04/21/10 Received Date: 04/22/10 Extraction Date: Analysis Date: 29-APR-2010 15:51 Report Date: 05/04/2010 Matrix: WATER 

### % Solids: NA 

## KATAHDIN ANALYTICAL SERVICES Report of Analytical Results

Lab ID: SD2185-5 Client ID: MW-508B SDG: SD2185 Extracted by: Extraction Method: SW846 5030 Analyst: TTC Analysis Method: SW846 8260B Lab Prep Batch: WG76844 Units: ug/1

CAS# Compound Flags Results DF PQL Adj .PQL Adj .MDL 71-43-2 Benzene 

### u 1 1.0 1 1 0.3 108-90-7 Chlorobenzene 

### u 1 1.0 1 1 0.2 541-73-1 1,3-Dichlorobenzene 

### u 1 1.0 1 1 0.3 106-46-7 1,4-Dichlorobenzene 

### u 1 1.0 1 1 0.2 95-50-1 1,2-Dichlorobenzene 

### u 1 1.0 1 1 0.2 120-82-1 1,2,4-Trichlorobenzene 

### u 1 1.0 1 1 0.4 87-61-6 1,2,3-Trichlorobenzene 

### u 1 1.0 1 1 0.3 108-70-3 1,3,5-Trichlorobenzene 

### u 1 1.0 1 1 0.2 1868-53-7 Dibromofluoromethane 84% 17060-07-0 1,2-Dichloroethane-D4 87% 2037-26-5 Toluene-DB 90% 460-00-4 P-Bromofluorobenzene 90%
Page 01 of 01 S0287.D

## Katahdin Analytical Services A0000008 Client: Utility Shared Serv Project: O'Connor Site PO No: Sample Date: 04/21/10 Received Date: 04/22/10 Extraction Date: Analysis Date: 29-APR-2010 16:23 Report Date: 05/04/2010 Matrix: WATER % Solids: NA 

## KATAHDIN ANALYTICAL SERVICES Report of Analytical Results

Lab ID: SD2185-6 Client ID: MW-507AD SDG: SD2185 Extracted by: Extraction Method: SW846 5030 Analyst: TTC Analysis Method: SW846 8260B Lab Prep Batch: WG76844 Units: ug/1

CAS# Compound Flags Results DF PQL Adj

. PQL Adj •MDL 71-43-2 Benzene 

### u 1 1.0 1 1 0.3 108-90-7 Chlorobenzene J 0.7 1.0 1 1 0.2 541-73-1 1,3-Dichlorobenzene 2 1.0 1 1 0.3 106-46-7 1,4-Dichlorobenzene J 0.8 1.0 1 1 0.2 95-50-1 1,2-Dichlorobenzene 2 1.0 1 1 0.2 120-82-1 1,2,4-Trichlorobenzene 

### u 1 1.0 1 1 0.4 87-61-6 1,2,3-Trichlorobenzene 

### u 1 1.0 1 1 0.3 108-70-3 1,3,5-Trichlorobenzene 

### u 1 1.0 1 1 0.2 1868-53-7 Dibrornofluorornethane 83% 17060-07-0 1,2-Dichloroethane-D4 86% 2037-26-5 Toluene-DB 90% 460-00-4 P-Brornofluorobenzene 90%
Page 01 of 01 S0288.D

## Katahdin Analytical Services A0000009 Client: Utility Shared Serv Project: O'Connor Site PO No: Sample Date: 04/21/10 Received Date: 04/22/10 Extraction Date: Analysis Date: 30-APR-2010 16:24 Report Date: 05/04/2010 Matrix: WATER 

### % Solids: NA 

## KATAHDIN ANALYTICAL SERVICES 

## Report of Analytical Results

Lab ID: SD2185-7 Client ID: MW-106A SDG: SD2185 Extracted by: Extraction Method: SW846 5030 Analyst: TTC Analysis Method: SWB46 8260B Lab Prep Batch: WG76896 Units: ug/l

CAS# Compound Flags Results DF PQL Adj.PQL 71-43-2 Benzene 

## u 1 1.0 1 1 108-90-7 Chlorobenzene 

## u 1 1.0 1 1 541-73-1 1,3-Dichlorobenzene 

## u 1 1.0 1 1 106-46-7 1,4-Dichlorobenzene 

### u 1 1.0 1 1 95-50-1 1,2-Dichlorobenzene 

## u 1 1.0 1 1 120-82-1 1,2,4-Trichlorobenzene 

## u 1 1.0 1 1 87-61-6 1,2,3-Trichlorobenzene 

## u 1 1.0 1 1 108-70-3 1,3,5-Trichlorobenzene 

### u 1 1.0 1 1 1868-53-7 Dibromofluoromethane 89% 17060-07-0 1,2-Dichloroethane-D4 88% 2037-26-5 Toluene-DB 93% 460-00-4 P-Bromofluorobenzene 95%
Page 01 of 01 S0312.D Adj .MDL 0.3 0.2 0.3 0.2 0.2 0.4 0.3 0.2

## Katahdin Analytical Services A0000010 Client: Utility Shared Serv Project: O'Connor Site PO No: Sample Date: 04/21/10 Received Date: 04/22/10 Extraction Date: Analysis Date: 30-APR-2010 16:55 Report Date: 05/04/2010 Matrix: WATER % Solids: NA 

## KATAHDIN ANALYTICAL SERVICES Report of Analytical Results

Lab ID: SD2185-8 Client ID: MW-106B SDG: SD2185 Extracted by: Extraction Method: SW846 5030 Analyst: TTC Analysis Method: SW846 8260B Lab Prep Batch: WG76896 Units: ug/l

CAS# Compound Flags Results DF PQL Adj.PQL 71-43-2 Benzene 

### u 1 1.0 1 1 108-90-7 Chlorobenzene 

### u 1 1.0 1 1 541-73-1 1,3-Dichlorobenzene 

### u 1 1.0 1 1 106-46-7 1,4-Dichlorobenzene 

### u 1 1.0 1 1 95-50-1 1,2-Dichlorobenzene 

### u 1 1.0 1 1 120-82-1 1,2,4-Trichlorobenzene 

### u 1 1.0 1 1 87-61-6 1,2,3-Trichlorobenzene J 0.4 1.0 1 1 108-70-3 1,3,5-Trichlorobenzene 

### u 1 1.0 1 1 1868-53-7 Dibromofluoromethane 88% 17060-07-0 1,2-Dichloroethane-D4 88% 2037-26-5 Toluene-DB 90% 460-00-4 P-Bromofluorobenzene 91%
Page 01 of 01 S0313 .D Adj.MDL 0.3 0.2 0.3 0.2 0.2 0.4 0.3 0.2

## Katahdin Analytical Services A0000011 Client: Utility Shared Serv Project: O'Connor Site PO No: Sample Date: 04/22/10 Received Date: 04/22/10 Extraction Date: Analysis Date: 30-APR-2010 17:26 Report Date: 05/04/2010 Matrix: WATER % Solids: NA 

## KATAHDIN ANALYTICAL SERVICES 

## Report of Analytical Results

Lab ID: SD2185-9 Client ID: MW-104B SDG: SD2185 Extracted by: Extraction Method: SW846 5030 Analyst: TTC Analysis Method: SW846 8260B Lab Prep Batch: WG76896 Units: ug/1

CAS# Compound Flags Results DF PQL Adj .PQL Adj .MDL 

### 71-43-2 Benzene 

## u 1 1.0 1 1 0.3 108-90-7 Chlorobenzene J 

### 0.7 1.0 1 1 0.2 541-73-1 1,3-Dichlorobenzene 5 1.0 1 1 0.3 106-46-7 1,4-Dichlorobenzene 15 1.0 1 1 0.2 95-50-1 1,2-Dichlorobenzene 3 1.0 1 1 0.2 120-82-1 1,2,4-Trichlorobenzene 16 1.0 1 1 0.4 87-61-6 1,2,3-Trichlorobenzene 8 1.0 1 1 0.3 108-70-3 1,3,5-Trichlorobenzene 

### u 1 1.0 1 1 0.2 1868-53-7 Dibromofluoromethane 88% 17060-07-0 1,2-Dichloroethane-D4 88% 2037-26-5 Toluene-DB 92% 460-00-4 P-Bromofluorobenzene 93%
Page 01 of 01 S0314.D

## Katahdin Analytical Services A0000012 Client: Utility Shared Serv Project: O'Connor Site PO No: Sample Date: 04/22/10 Received Date: 04/22/10 Extraction Date: Analysis Date: 30-APR-2010 17:58 Report Date: 05/04/2010 Matrix: WATER % Solids: NA 

## KATAHDIN ANALYTICAL SERVICES 

## Report of Analytical Results

Lab ID: SD2185-10 Client ID: OW-201B SDG: SD2185 Extracted by: Extraction Method: SW846 5030 Analyst: TTC Analysis Method: SW846 8260B Lab Prep Batch: WG76896 Units: ug/1

CAS# Compound Flags Results DF PQL Adj.PQL 71-43-2 Benzene 

## u 1 1.0 1 1 108-90-7 Chlorobenzene J 0.4 1.0 1 1 541-73-1 1,3-Dichlorobenzene 6 1.0 1 1 106-46-7 1,4-Dichlorobenzene 3 1.0 1 1 95-50-1 1,2-Dichlorobenzene 6 1.0 1 1 120-82-1 1,2,4-Trichlorobenzene J 0.4 1.0 1 1 87-61-6 1,2,3-Trichlorobenzene 

## u 1 1.0 1 1 108-70-3 1,3,5-Trichlorobenzene 

## u 1 1.0 1 1 1868-53-7 Dibromofluoromethane 88% 17060-07-0 1,2-Dichloroethane-D4 86% 2037-26-5 Toluene-DB 91% 460-00-4 P-Bromofluorobenzene 92%
Page 01 of 01 S0315.D Adj.MDL 0.3 0.2 0.3 0.2 0.2 0.4 0.3 0.2

## Katahdin Analytical Services A0000013 Client: Utility Shared Serv Project: O'Connor Site PO No: Sample Date: 04/21/10 Received Date: 04/22/10 Extraction Date: Analysis Date: 30-APR-2010 11:10 Report Date: 05/04/2010 Matrix: WATER % Solids: NA 

## KATAHDIN ANALYTICAL SERVICES Report of Analytical Results

Lab ID: SD2185-11 Client ID: FB-1 SDG: SD2185 Extracted by: Extraction Method: SW846 5030 Analyst: TTC Analysis Method: SW846 8260B Lab Prep Batch: WG76896 Units: ug/1

CAS# Compound Flags Results DF PQL Adj.PQL 71-43-2 Benzene 

### u 1 1.0 1 1 108-90-7 Chlorobenzene 

### u 1 1.0 1 1 541-73-1 1,3-Dichlorobenzene 

### u 1 1.0 1 1 106-46-7 1,4-Dichlorobenzene 

### u 1 1.0 1 1 95-50-1 1,2-Dichlorobenzene 

### u 1 1.0 1 1 120-82-1 1,2,4-Trichlorobenzene 

### u 1 1.0 1 1 87-61-6 1,2,3-Trichlorobenzene 

### u 1 1.0 1 1 108-70-3 1,3,5-Trichlorobenzene 

### u 1 1.0 1 1 1868-53-7 Dibromofluoromethane 83% 17060-07-0 1,2-Dichloroethane-D4 88% 2037-26-5 Toluene-DB 93% 460-00-4 P-Bromofluorobenzene 93%
Page 01 of 01 S0302.D Adj .MDL 0.3 0.2 0.3 0.2 0.2 0.4 0.3 0.2

## Katahdin Analytical Services A0000014 Client: Utility Shared Serv Project: O'Connor Site PO No: Sample Date: 04/21/10 Received Date: 04/22/10 Extraction Date: Analysis Date: 30-APR-2010 11:42 Report Date: 05/04/2010 Matrix: WATER % Solids: NA 

## KATAHDIN ANALYTICAL SERVICES 

## Report of Analytical Results

Lab ID: SD2185-l2 Client ID: EB-1 SDG: SD2185 Extracted by: Extraction Method: SWB46 5030 Analyst: TTC Analysis Method: SWB46 8260B Lab Prep Batch: WG76896 Units: ug/1

CAS# Compound Flags Results DF PQL Adj.PQL 

### 71-43-2 Benzene 

## u l 1.0 l 1 

### 108-90-7 Chlorobenzene 

## u 1 

### 1.0 1 

### l 541-73-l 1,3-Dichlorobenzene 

## u l 1.0 l l 106-46-7 1,4-Dichlorobenzene 

## u l 1.0 l l 95-50-l 1,2-Dichlorobenzene 

## u l 1.0 l l 120-82-l 1,2,4-Trichlorobenzene 

## u l 1.0 l l 87-61-6 1,2,3-Trichlorobenzene 

## u l 1.0 l l 108-70-3 1,3,5-Trichlorobenzene 

## u l 1.0 l l 1868-53-7 Dibromofluoromethane 84% 17060-07-0 1,2-Dichloroethane-D4 90% 2037-26-5 Toluene-DB 93% 460-00-4 P-Bromofluorobenzene 90%
Page 01 of 01 S0303.D Adj.MDL 

### 0.3 0.2 0.3 0.2 0.2 0.4 0.3 0.2

## Katahdin Analytical Services A0000015 Client: Utility Shared Serv Project: O'Connor Site PO No: Sample Date: 04/22/10 Received Date: 04/22/10 Extraction Date: Analysis Date: 30-APR-2010 12:13 Report Date: 05/04/2010 Matrix: WATER % Solids: NA 

## KATAHDIN ANALYTICAL SERVICES 

## Report of Analytical Results

Lab ID: SD2185-13 Client ID: TRIP BLANK SDG: SD2185 Extracted by: Extraction Method: SW846 5030 Analyst: TTC Analysis Method: SW846 8260B Lab Prep Batch: WG76896 Units: ug/1

CAS# Compound Flags Results DF PQL Adj.PQL Adj.MDL 71-43-2 Benzene 

### u 1 1.0 1 1 0.3 108-90-7 Chlorobenzene 

### u 1 1.0 1 1 0.2 541-73-1 1,3-Dichlorobenzene 

### u 1 1.0 1 1 0.3 106-46-7 1,4-Dichlorobenzene 

### u 1 1.0 1 1 0.2 95-50-1 1,2-Dichlorobenzene 

### u 1 1.0 1 1 0.2 120-82-1 1,2,4-Trichlorobenzene 

### u 1 1.0 1 1 0.4 87-61-6 1,2,3-Trichlorobenzene 

### u 1 1.0 1 1 0.3 108-70-3 1,3,5-Trichlorobenzene 

### u 1 1.0 1 1 0.2 1868-53-7 Dibromofluoromethane 87% 17060-07-0 1,2-Dichloroethane-D4 87% 2037-26-5 Toluene-DB 91% 460-00-4 P-Bromofluorobenzene 91%
Page 01 of 01 S0304.D

## Katahdin Analytical Services A0000016 Client: Utility Shared Serv Project: O'Connor Site PO No: Sample Date: 04/21/10 Received Date: 04/22/10 Extraction Date: 04/26/10 Analysis Date: 27-APR-2010 16:43 Report Date: 05/04/2010 Matrix: WATER % Solids: NA

CAS# Compound 

### 12674-11-2 Aroclor-1016 11104-28-2 Aroclor-1221 11141-16-5 Aroclor-1232 53469-21-9 Aroclor-1242 12672-29-6 Aroclor-1248 11097-69-1 Aroclor-1254 11096-82-5 Aroclor-1260 877-09-8 Tetrachloro-m-xylene 2051-24-3 Decachlorobiphenyl 

## KATAHDIN ANALYTICAL SERVICES Report of Analytical Results

Lab ID: SD2185-1 Client ID: MW-501 SDG: SD2185 Extracted by: WS Extraction Method: SW846 3510 Analyst: RCT Analysis Method: SW846 8082 Lab Prep Batch: WG76642 Units: ug/L

Flags Results DF PQL Adj
. PQL Adj
. MDL 

### u 0.047 1.0 0.50 0.047 0.014 

### u 0.047 1.0 0.50 0.047 0.019 

### u 0.047 1.0 0.50 0.047 0.0085 

### u 0.047 1.0 0.50 0.047 0.017 

### u 0.047 1.0 0.50 0.047 0.019 

### u 0.047 1.0 0.50 0.047 0.0075 

### u 0.047 1.0 0.50 0.047 0.016 82% 

### 73%
Page 01 of 01 7DD414.D

## Katahdin Analytical Services A0000017 Client: Utility Shared Serv Project: O'Connor Site PO No: Sample Date: 04/21/10 Received Date: 04/22/10 Extraction Date: 04/26/10 Analysis Date: 27-APR-2010 17:09 Report Date: 05/04/2010 Matrix: WATER % Solids: NA

CAS# Compound 12674-11-2 Aroclor-1016 11104-28-2 Aroclor-1221 11141-16-5 Aroclor-1232 53469-21-9 Aroclor-1242 12672-29-6 Aroclor-1248 11097-69-1 Aroclor-1254 11096-82-5 Aroclor-1260 877-09-8 Tetrachloro-m-xylene 2051-24-3 Decachlorobiphenyl 

## KATAHDIN ANALYTICAL SERVICES Report of Analytical Results

Flags 

### u u u u u u u Lab ID: SD2185-2 Client ID: MW-502 SDG: SD2185 Extracted by: WS Extraction Method: SW846 3510 Analyst: RCT Analysis Method: SW846 8082 Lab Prep Batch: WG76642 Units: ug/L

Results DF PQL Adj.PQL 0.049 1.0 0.50 0.049 0.049 1.0 0.50 0.049 0.049 1.0 0.50 0.049 0.049 1.0 0.50 0.049 0.049 1.0 0.50 0.049 0.049 1.0 0.50 0.049 0.049 1.0 0.50 0.049 63% 37%
Page 01 of 01 7DD415.D Adj .MDL 0.015 0.020 0.0088 0.018 0.020 0. 0078 0.017

## Katahdin Analytical Services A0000018 Client: Utility Shared Serv Project: O'Connor Site PO No: Sample Date: 04/21/10 Received Date: 04/22/10 Extraction Date: 04/26/10 Analysis Date: 27-APR-2010 17:35 Report Date: 05/04/2010 Matrix: WATER % Solids: NA

CAS# Compound 12674-11-2 Aroclor-1016 11104-28-2 Aroclor-1221 11141-16-5 Aroclor-1232 53469-21-9 Aroclor-1242 12672-29-6 Aroclor-1248 11097-69-1 Aroclor-1254 11096-82-5 Aroclor-1260 877-09-8 Tetrachloro-m-xylene 2051-24-3 Decachlorobiphenyl 

## KATAHDIN ANALYTICAL SERVICES Report of Analytical Results

Flags 

### u u u u u u u Lab ID: SD2185-3 Client ID: MW-503 SDG: SD2185 Extracted by: WS Extraction Method: SW846 3510 Analyst: RCT Analysis Method: SW846 8082 Lab Prep Batch: WG76642 Units: ug/L

Results DF PQL Adj .PQL 0.047 1.0 0.50 0.047 0.047 1.0 0.50 0.047 0.047 1.0 0.50 0.047 0.047 1.0 0.50 0.047 0.047 1.0 0.50 0.047 0.047 1.0 0.50 0.047 0.047 1.0 0.50 0.047 61% 54%
Page 01 of 01 7DD416.D Adj.MDL 0. 014 0. 019 0. 0085 0. 017 0. 019 0.0075 0. 016

## Katahdin Analytical Services A0000019 Client: Utility Shared Serv Project: O'Connor Site PO No: Sample Date: 04/21/10 Received Date: 04/22/10 Extraction Date: 04/26/10 Analysis Date: 27-APR-2010 18:01 Report Date: 05/04/2010 Matrix: WATER % Solids: NA

CAS# Compound 12674-11-2 Aroclor-1016 11104-28-2 Aroclor-1221 11141-16-5 Aroclor-1232 53469-21-9 Aroclor-1242 12672-29-6 Aroclor-1248 11097-69-1 Aroclor-1254 11096-82-5 Aroclor-1260 877-09-8 Tetrachloro-rn-xylene 2051-24-3 Decachlorobiphenyl 

## KATAHDIN ANALYTICAL SERVICES Report of Analytical Results

Flags 

### u u u 

### u u u u Lab ID: SD2185-4 Client ID: MW-507A SDG: SD2185 Extracted by: WS Extraction Method: SW846 3510 Analyst: RCT Analysis Method: SW846 8082 Lab Prep Batch: WG76642 Units: ug/L

Results DF PQL Adj .PQL 0.047 1.0 0.50 0.047 0.047 1.0 0.50 0.047 0.047 1.0 0.50 0.047 0.047 1.0 0.50 0.047 0.047 1.0 0.50 0.047 0.047 1.0 0.50 0.047 0.047 1.0 0.50 0.047 53% 

## * 23%
Page 01 of 01 7DD417.D Adj.MDL 0.014 0.019 0. 0085 0.017 0.019 0. 0075 0.016

## Katahdin Analytical Services A0000020 Client: Utility Shared Serv Project: O'Connor Site PO No: Sample Date: 04/21/10 Received Date: 04/22/10 Extraction Date: 04/26/10 Analysis Date: 27-APR-2010 18:27 Report Date: 05/04/2010 Matrix: WATER % Solids: NA

CAS# Compound 12674-ll-2 Aroclor-1016 11104-28-2 Aroclor-1221 11141-16-5 Aroclor-1232 53469-21-9 Aroclor-1242 12672-29-6 Aroclor-1248 11097-69-l Aroclor-1254 11096-82-5 Aroclor-1260 877-09-8 Tetrachloro-m-xylene 2051-24-3 Decachlorobiphenyl 

## KATAHDIN ANALYTICAL SERVICES Report of Analytical Results

Lab ID: SD2185-5 Client ID: MW-508B SDG: SD2185 Extracted by: WS Extraction Method: SW846 3510 Analyst: RCT Analysis Method: SW846 8082 Lab Prep Batch: WG76642 Units: ug/L

Flags Results DF PQL Adj .PQL Adj .MDL 

## u 0.048 1.0 0.50 0.048 0.014 

## u 0.048 1.0 0.50 0.048 0. 019 

## u 0.048 1.0 0.50 0.048 0. 0087 

## u 0.048 1.0 0.50 0.048 0.017 

## u 0.048 1.0 0.50 0.048 0.019 

## u 0.048 1.0 0.50 0.048 0.0078 

## u 0.048 1.0 0.50 0.048 0.016 88% 43%
Page 01 of 01 7DD418.D

## Katahdin Analytical Services A0000021 Client: Utility Shared Serv Project: O'Connor Site PO No: Sample Date: 04/21/10 Received Date: 04/22/10 Extraction Date: 04/26/10 Analysis Date: 27-APR-2010 20:35 Report Date: 05/04/2010 Matrix: WATER % Solids: NA

CAS# Compound 12674-11-2 Aroclor-1016 11104-28-2 Aroclor-1221 11141-16-5 Aroclor-1232 53469-21-9 Aroclor-1242 12672-29-6 Aroclor-1248 11097-69-1 Aroclor-1254 11096-82-5 Aroclor-1260 877-09-8 Tetrachloro-m-xylene 2051-24-3 Decachlorobiphenyl 

## KATAHDIN ANALYTICAL SERVICES Report of Analytical Results

Lab ID: SD2185-6 Client ID: MW-507AD SDG: SD2185 Extracted by: WS Extraction Method: SW846 3510 Analyst: RCT Analysis Method: SW846 8082 Lab Prep Batch: WG76642 Units: ug/L

Flags Results DF PQL Adj .PQL Adj .MDL 

### u 0.047 1.0 0.50 0.047 0.014 

### u 0.047 1.0 0.50 0.047 0.019 

### u 0.047 1.0 0.50 0.047 0.0085 

### u 0.047 1.0 0.50 0.047 0.017 

### u 0.047 1.0 0.50 0.047 0.019 

### u 0.047 1.0 0.50 0.047 0.0075 

### u 0.047 1.0 0.50 0.047 0.016 40% 

## * 16%
Page 01 of 01 7DD423.D

## Katahdin Analytical Services A0000022 Client: Utility Shared Serv Project: O'Connor Site PO No: Sample Date: 04/21/10 Received Date: 04/22/10 Extraction Date: 04/26/10 Analysis Date: 27-APR-2010 21:01 Report Date: 05/04/2010 Matrix: WATER % Solids: NA

CAS# Compound 12674-11-2 Aroclor-1016 11104-28-2 Aroclor-1221 11141-16-5 Aroclor-1232 53469-21-9 Aroclor-1242 12672-29-6 Aroclor-1248 11097-69-1 Aroclor-1254 11096-82-5 Aroclor-1260 877-09-8 Tetrachloro-m-xylene 2051-24-3 Decachlorobiphenyl 

## KATAHDIN ANALYTICAL SERVICES Report of Analytical Results

Flags 

### u u u u u u u Lab ID: SD2185-7 Client ID: MW-106A SDG: SD2185 Extracted by: WS Extraction Method: SW846 3510 Analyst: RCT Analysis Method: SW846 8082 Lab Prep Batch: WG76642 Units: ug/L

Results DF PQL Adj.PQL 0.047 1.0 0.50 0.047 0.047 1.0 0.50 0.047 0.047 1.0 0.50 0.047 0.047 1.0 0.50 0.047 0.047 1.0 0.50 0.047 0.047 1.0 0.50 0.047 0.047 1.0 0.50 0.047

48% 58%
Page 01 of 01 7DD424.D Adj .MDL 0.014 0.019 0.0085 0.017 0. 019 0.0075 0.016

## Katahdin Analytical Services A0000023 Client: Utility Shared Serv Project: O'Connor Site PO No: Sample Date: 04/21/10 Received Date: 04/22/10 Extraction Date: 04/26/10 Analysis Date: 27-APR-2010 21:27 Report Date: 05/04/2010 Matrix: WATER % Solids: NA

CAS# Compound 12674-11-2 Aroclor-1016 11104-28-2 Aroclor-1221 11141-16-5 Aroclor-1232 53469-21-9 Aroclor-1242 12672-29-6 Aroclor-1248 11097-69-1 Aroclor-1254 11096-82-5 Aroclor-1260 877-09-8 Tetrachloro-rn-xylene 2051-24-3 Decachlorobiphenyl 

## KATAHDIN ANALYTICAL SERVICES Report of Analytical Results

Lab ID: SD2185-8 Client ID: MW-106B SDG: SD2185 Extracted by: WS Extraction Method: SW846 3510 Analyst: RCT Analysis Method: SW846 8082 Lab Prep Batch: WG76642 Units: ug/L

Flags Results DF PQL Adj. PQL Adj .MDL 

## u 0.047 1.0 0.50 0.047 0.014 

## u 0.047 1.0 0.50 0.047 0.019 

## u 0.047 1.0 0.50 0.047 0. 0085 

## u 0.047 1.0 0.50 0.047 0.017 

## u 0.047 1.0 0.50 0.047 0.019 

## u 0.047 1.0 0.50 0.047 0. 0075 

## u 0.047 1.0 0.50 0.047 0.016 86% 83%
Page 01 of 01 7DD425.D

## Katahdin Analytical Services A0000024 Client: Utility Shared Serv Project: O'Connor Site PO No: Sample Date: 04/22/10 Received Date: 04/22/10 Extraction Date: 04/26/10 Analysis Date: 27-APR-2010 21:52 Report Date: 05/04/2010 Matrix: WATER % Solids: NA

CAS# Compound 12674-11-2 Aroclor-1016 11104-28-2 Aroclor-1221 11141-16-5 Aroclor-1232 53469-21-9 Aroclor-1242 12672-29-6 Aroclor-1248 11097-69-1 Aroclor-1254 11096-82-5 Aroclor-1260 877-09-8 Tetrachloro-m-xylene 2051-24-3 Decachlorobiphenyl 

## KATAHDIN ANALYTICAL SERVICES Report of Analytical Results

Lab ID: SD2185-9 Client ID: MW-104B SDG: SD2185 Extracted by: WS Extraction Method: SW846 3510 Analyst: RCT Analysis Method: SW846 8082 Lab Prep Batch: WG76642 Units: ug/L

Flags Results DF PQL Adj

. PQL Adj •MDL 

### u 0.047 1.0 0.50 0.047 0. 014 

### u 0.047 1.0 0.50 0.047 0.019 

### u 0.047 1.0 0.50 0.047 0.0085 

### u 0.047 1.0 0.50 0.047 0.017 

### u 0.047 1.0 0.50 0.047 0. 019 

### u 0.047 1.0 0.50 0.047 0.0075 

### u 0.047 1.0 0.50 0.047 0.016 100%

76%
Page 01 of 01 7DD426.D

## Katahdin Analytical Services A0000025 Client: Utility Shared Serv Project: O'Connor Site PO No: Sample Date: 04/22/10 Received Date: 04/22/10 Extraction Date: 04/26/10 Analysis Date: 27-APR-2010 22:18 Report Date: 05/04/2010 Matrix: WATER % Solids: NA

CAS# Compound 12674-11-2 Aroclor-1016 11104-28-2 Aroclor-1221 11141-16-5 Aroclor-1232 53469-21-9 Aroclor-1242 12672-29-6 Aroclor-1248 11097-69-1 Aroclor-1254 11096-82-5 Aroclor-1260 877-09-8 Tetrachloro-m-xylene 2051-24-3 Decachlorobiphenyl 

## KATAHDIN ANALYTICAL SERVICES Report of Analytical Results

Lab ID: SD2185-10 Client ID: OW-201B SDG: SD2185 Extracted by: WS Extraction Method: SW846 3510 Analyst: RCT Analysis Method: SW846 8082 Lab Prep Batch: WG76642 Units: ug/L

Flags Results DF PQL Adj .PQL Adj .MDL 

## u Oo047 1.0 Oo50 Oo047 0

0 014 

## u Oo047 1.0 Oo50 00047 0 o019 

## u Oo047 l.O Oo50 Oo047 Oo0085 

## u Oo047 1.0 Oo50 00047 Oo017 

## u Oo047 1.0 Oo50 Oo047 0

0 019 

## u 00047 1.0 Oo50 Oo047 Oo0075 

## u Oo047 1.0 Oo50 Oo047 0

0 016 71% 72%
Page 01 of 01 7DD427oD

## Katahdin Analytical Services A0000026 Client: Utility Shared Serv Project: O'Connor Site PO No: Sample Date: 04/21/10 Received Date: 04/22/10 Extraction Date: 04/26/10 Analysis Date: 27-APR-2010 22:44 Report Date: 05/04/2010 Matrix: WATER % Solids: NA

CAS# Compound 12674-11-2 Aroclor-1016 11104-28-2 Aroclor-1221 11141-16-5 Aroclor-1232 53469-21-9 Aroclor-1242 12672-29-6 Aroclor-1248 11097-69-1 Aroclor-1254 11096-82-5 Aroclor-1260 877-09-8 Tetrachloro-m-xylene 2051-24-3 Decachlorobiphenyl 

## KATAHDIN ANALYTICAL SERVICES Report of Analytical Results

Lab ID: SD2185-ll Client ID: FB-1 SDG: SD2185 Extracted by: WS Extraction Method: SW846 3510 Analyst: RCT Analysis Method: SW846 8082 Lab Prep Batch: WG76642 Units: ug/L

Flags Results DF PQL Adj

. PQL Adj •MDL 

## u 0.047 1.0 0.50 0.047 0.014 

## u 0.047 1.0 0.50 0.047 0. 019 

## u 0.047 1.0 0.50 0.047 0.0085 

## u 0.047 1.0 0.50 0.047 0. 017 

## u 0.047 1.0 0.50 0.047 0.019 

## u 0.047 1.0 0.50 0.047 0.0075 

## u 0.047 1.0 0.50 0.047 0.016 90% 79%
Page 01 of 01 7DD428.D

## Katahdin Analytical Services A0000027 Client: Utility Shared Serv Project: O'Connor Site PO No: Sample Date: 04/21/10 Received Date: 04/22/10 Extraction Date: 04/26/10 Analysis Date: 27-APR-2010 23:09 Report Date: 05/04/2010 Matrix: WATER % Solids: NA

CAS# Compound 12674-11-2 Aroclor-1016 11104-28-2 Aroclor-1221 11141-16-5 Aroclor-1232 53469-21-9 Aroclor-1242 12672-29-6 Aroclor-1248 11097-69-1 Aroclor-1254 11096-82-5 Aroclor-1260 877-09-8 Tetrachloro-m-xylene 2051-24-3 Decachlorobiphenyl 

## KATAHDIN ANALYTICAL SERVICES Report of Analytical Results

Lab ID: SD2185-12 Client ID: EB-1 SDG: SD2185 Extracted by: WS Extraction Method: SW846 3510 Analyst: RCT Analysis Method: SW846 8082 Lab Prep Batch: WG76642 Units: ug/L

Flags Results DF PQL Adj

. PQL Adj

. MDL 

## u 0.047 1.0 0.50 0.047 0.014 

## u 0.047 1.0 0.50 0.047 0.019 

## u 0.047 1.0 0.50 0.047 0.0085 

## u 0.047 1.0 0.50 0.047 0. 017 

## u 0.047 1.0 0.50 0.047 0.019 

## u 0.047 1.0 0.50 0.047 0.0075 

## u 0.047 1.0 0.50 0.047 0.016 91% 76%
Page 01 of 01 7DD429.D

# APPENDIX H: TIME SERIES PLOT-1,4 DICHLOROBENZENE

### 0

10 20 30 40 50 60 70 80 90 10011/25/19866/17/19916/9/199210/19/19955/3/19967/10/199612/11/19963/27/19979/23/19973/25/19986/10/199812/1/19983/25/19999/13/19993/29/20004/23/20019/18/20019/17/20024/21/20044/20/20059/13/20059/27/20069/18/20074/23/20084/22/2010Concentration(ug/L)



### MW-104B MW-106B MW-507A OW-201B name 1,4-Dichlorobenzene

Average of graph_value

samp_date site_id