# APRIL 2011 GROUNDWATER MONITORING

MANAGEMENT OF MIGRATION SAMPLING AND ANALYSIS ANNUAL REPORT



# 222350 Central Maine Power Augusta, Maine 

# August 2011 

# w oodardcurran.com
COMMITMENT & INTEGRITY DRIVE RESULTSCentral Maine Power (222350) i August 2011

MOM 2011 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 August 2011

MOM 2011 Annual Report 

# EXECUTIVE SUMMARY

This report presents the results of the sampling and analysis of the April 2011 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, 2011. 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 2011 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 2011 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 2011. 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 2011. 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 August 2011

MOM 2011 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 2011 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 2011 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 August 2011

MOM 2011 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 bentonite chips and a 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 August 2011

MOM 2011 Annual Report 

# 2. SAMPLING PROCEDURES

During the April 2011 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 2011 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, 2011. Two MOM monitoring wells (MW-104B, 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 groundwater and groundwater 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-106AD, was collected from monitoring well, MW-106A. A matrix spike and matrix spike duplicate, MW-503MS and MW-503MSD were collected from MW-503. Other quality control samples included a trip blank, a field blank (FB-1) and an equipment blank (EB-1). 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 2011 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 2011 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 2011 overburden groundwater contour map is included in Appendix E.Central Maine Power (222350) 2-2 August 2011

MOM 2011 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 2011 FPO monitoring are shown in Appendix F. In January 2011, measurable oil (0.05 feet) was removed from OW-202B. Between 2006 (decommissioning of the VER system) and 2010, measurable oil was removed from the following wells:

 2010: 0.06 feet OW-202B, RW-101

 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 August 2011

MOM 2011 Annual Report 

# 3. ANALYTICAL RESULTS

The April 2011 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 2011 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 2011, 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 2011 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 2011. 1,4-dichlorobenzene was detected below the performance standard in groundwater samples collected from two monitoring well locations; MW-104B, and OW-201B, at concentrations of 0.8, and 3 ug/L, respectively.

 1,3,5-trichlorobenzene was not detected in the groundwater in the MOM monitoring wells in April 2011.

 Other target VOCs were detected including 1,2,3-trichlorobenzene in MW-104B; 1,2- dichlorobenzene in MW-104B, MW-501 and OW-201B; 1,3-dichlorobenzene in MW-104B, MW-507A and OW-201B; and chlorobenzene in OW-201B. Concentrations were well below associated performance standards in all samples.

 The individual VOC results in the groundwater from MW-106A, MW-106B, MW-502, MW-503, and MW-508B, were all below the detection limit of 1 ug/L. Quality control results associated with the April 2011 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 August 2011

MOM 2011 Annual Report 

## All quality control parameters were compliant for VOC results; therefore, no sample qualifiers were applied. Trip, field and method blank results were non-detect for all target VOCs indicating that there were no interferences from shipping and laboratory processing. Percent recoveries of the surrogate tetrachloro-m-xylene (TCX) on one of two GC columns are below control limits of 62-111 in samples MW-508B, MW-502 and OW-201B. The non-compliant percent recoveries of TCX in these samples of 50, 59 and 58, respectively, indicate a potential slightly low bias. Since PCB concentrations for these samples were taken from the second column that had compliant recoveries of TCX, there was no impact on the sample data. The non-detected results for MW-508B, MW-502 and OW-201B were reported unqualified.The closing calibration verification had high responses for Aroclor 1016, Aroclor 1260 and tetrachloro-mxylene (TCX) on one column. These responses resulted in Percent Differences (%D’s) that were outside method acceptance limits indicating a potential high bias. However, sample concentrations were taken from the second column which had compliant continuing calibration results. Therefore, there was no impact on the sample data, and Aroclor 1016 and Aroclor 1260 results were reported unqualified. Percent recoveries of Aroclor 1260 in the laboratory control sample (LCS) are above the control limits of 62-104. However, because percent recoveries of Aroclor 1260 in the LCSD are within control limits, there was no impact on sample data and the associated samples 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 August 2011

MOM 2011 Annual Report 

## TABLE 1 SUMMARY OF MOM GROUNDWATER MONITORING RESULTS APRIL 2011, 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 <0.048 4 <1.0 <1.0 0.2 J 1 0.8 J <1.0 <1.0 

### MW-106A <0.047 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 

### MW-106AD <0.047 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 

### MW-106B <0.048 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 

### MW-501 <0.047 <1.0 <1.0 <1.0 0.2 J <1.0 <1.0 <1.0 <1.0 

### MW-502 <0.048 <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-507A <0.048 <1.0 <1.0 <1.0 <1.0 0.4 J <1.0 <1.0 <1.0 

### MW-508B <0.047 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 

### OW-201B <0.049 <1.0 <1.0 <1.0 9 6 3 <1.0 1.0 

### EB-1 <0.048 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 <1.0 

### FB-1 <0.053 <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 < indicates constituent not detected above detection limit (practical quantitation limit (PQL)). J denotes an estimated value below the PQL, but above the method quantition limit. 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 August 2011

MOM 2011 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 twelve 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 both 2010 and 2011. 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). The concentration of 1,4- dichlorobenzene at MW-104B decreased to 0.8 ug/L in 2011. 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 2011 sampling event, the total VOC concentration at MW-507A was estimated at 0.4 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. In April 2011, the concentration of VOCs at MW-501 was estimated at 0.2 ug/LCentral Maine Power (222350) 3-5 August 2011

MOM 2011 Annual Report 

## and concentrations of VOCs at, MW-502 and MW-503 were non-detect, which is consistent with historic results.Central Maine Power (222350) 4-1 August 2011

MOM 2011 Annual Report 

# 4. CONCLUSIONS AND RECOMMENDATIONS

The April 2011 groundwater-sampling event was conducted in accordance with the current SAP and Quality Assurance Project Plan (QAPP). The results of the April 2011 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 2011. 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 2011. 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 August 2011

MOM 2011 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 August 2011

MOM 2011 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 & CurranCentral Maine Power (222350) August 2011

MOM 2011 Annual Report 

# APPENDIX A: LONG-TERM MONITORING SITE PLAN

## WOODARD

CURRAN COMMITMENT & INTEGRITY DRIVE RESULTS | www.woodardcurran.com 880.426.4262 PORTLAND, MAINE 04102 41 HUTCHINS DRIVEII//.214.76FIELDJIIIIIIJI\<P1'"".....\II\\.IfIIIIIJ'\.'(\...PTALEGEND:FREEPRODUCTOILMONITORINGLOCATIONLONGlERMMONITORINGLOCATIONMONITORINGWELLSDECOMMISSIONEDSEPlEMBER2008DESIGNAlEDAREAMARKERS-SURVEYEDBYEPRO2002REVISED10-SIDEDDESIGNAlEDAREASUPERFUNDSll£BOUNDARYTOPOGRAPHICINFORMATIONISAPPROXIMAlE.TOPOGRAPHICINFORMATIONHASBEENCOMPILEDFROMORIGINALSll£PLANAND1999SURVEYOFREMEDIAlEDAREA50'050'1DO'--------BARSCALE1"=50'CHECKGRAPHICSCALEBEFOREUSING(!)z0::0!:::z0::1-wcn1-(!)zgI"'I0_2iJj::>i:s'U__J<(ICD<(o5wo"'"'onWNINUN)-'rn>-=omw6§:[ij<(WrY00JOBN0:222350.02DATE:JULY2011SCALE:ASNOTEDAPPENDIXACentral Maine Power (222350) August 2011

MOM 2011 Annual Report 

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

O'CONNOR SITE April 2011

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 21-Apr-11 Steel 214.9 45.00 12.18 202.72 1.39 -0.93 NM NM

Central Maine Power (222350) MOM 2011 Annual Report B-1 August 2011APPENDIX B Groundwater Elevations and PID Readings

O'CONNOR SITE April 2011

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 21-Apr-11 PVC 184.33 59.10 0.10 184.23 2.45 0.24 NM NM

Central Maine Power (222350) MOM 2011 Annual Report B-2 August 2011APPENDIX B Groundwater Elevations and PID Readings

O'CONNOR SITE April 2011

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 21-Apr-11 PVC 184.64 99.00 -5.80 190.44 2.65 0.33 NM NM Artesian Flow

Central Maine Power (222350) MOM 2011 Annual Report B-3 August 2011APPENDIX B Groundwater Elevations and PID Readings

O'CONNOR SITE April 2011

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 21-Apr-11 Steel 217.5 99.00 8.81 208.69 0.40 0.31 NM NM

Central Maine Power (222350) MOM 2011 Annual Report B-4 August 2011APPENDIX B Groundwater Elevations and PID Readings

O'CONNOR SITE April 2011

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 21-Apr-11 PVC 211.49 12.68 4.98 206.51 2.71 0.16 NM NM

Central Maine Power (222350) MOM 2011 Annual Report B-5 August 2011APPENDIX B Groundwater Elevations and PID Readings

O'CONNOR SITE April 2011

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 21-Apr-11 PVC 216.28 17.58 4.39 211.89 2.60 -0.01 NM NM

Central Maine Power (222350) MOM 2011 Annual Report B-6 August 2011APPENDIX B Groundwater Elevations and PID Readings

O'CONNOR SITE April 2011

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 21-Apr-11 PVC 207.29 13.36 4.60 202.69 2.45 0.20 NM NM

Central Maine Power (222350) MOM 2011 Annual Report B-7 August 2011APPENDIX B Groundwater Elevations and PID Readings

O'CONNOR SITE April 2011

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 21-Apr-11 PVC 217.56 22.67 6.36 211.20 3.63 -0.14 NM NM

Central Maine Power (222350) MOM 2011 Annual Report B-8 August 2011APPENDIX B Groundwater Elevations and PID Readings

O'CONNOR SITE April 2011

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 21-Apr-11 PVC 216.96 50.26 10.19 206.77 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 2011 Annual Report B-9 August 2011Central Maine Power (222350) August 2011

MOM 2011 Annual Report 

# APPENDIX C: FIELD RECORD DATA SHEETS2076216595 

### CMP 11:48:47 a.m. 05-13-2011 2/12
·--**GrouJ~J,dwater** 

## Field Data 

## Record 

## Project: 

# I O'Connor**L-..---;::::=:=:;;;;:=;::::~** 

## Central Maine Power Company 

## Project Number:

## ~==:::;;.::::;::::::::=:~ Location Activity: Start: 

# <g·: 

# 40 Pagel_ of_L 

## Date: 

# I 1- .:2/-/j Sample Location: 

# IMN-'50 J 

# I End: 

# 2 :QS Field QA Data: 

# CJ Field Duplicate Collected ID:

._I ...:...1\).;::._:o

___ _, 

### Water Level/Well Data PID Reading 

### at Wellhead:

____ _ PID Background Reading:

___ _ Measured Historical Top of Top of
Well Depth

Depth to Water

### ~:th to Screen 

# .I Ft 

# I**:====~** Height of Water 

# I Ft 

# I X Column

. . Length of Screen
Middle of Screen 

# oDD DO

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

Allowable Draw down Protective Casing Stickup 

# I "') q. 

## <( 1 Ft 

# I (from ground) ..._o(--"-•-'0"-----'· Protective Casing/ 

# I Ft 

# I

Well Differential 

## 0. {)()

. Well Material

### ~PVC 

# D
SS DOther

L/Purge Vol
L I Total Purged

Max Allowed Depth to Water Well Diameter 

# [!)'2"

Well integrity Good Protective Casing Intact Well Lock 

# D 4.. D·Other 

# [j§§

Pump Set Depth

## ~'-------Ft--'1 Purge Data Historical Purge Rate Purge Rate Historical Sampling Rate Sampling Rate Sample Observation Time(min)



### .**"')~** 

### O() Flow Rate (mVmin) Purge Vol (liters) Depth to Water (ft) Temp ('C) Spec. Cond. (umho/cm) pH (units) Turbidity (ntu) 

## 311 DO (ppm)
Time(min) Flow Rate (mVmin) Purge Vol (liters) 

## II 

## tr"' Depth to Water (ft) Temp('C) Spec. Cond. (umho/cm) pH (units) Turbidity (ntu) DO (ppm) 

### Equipment Docrlmentation.

. Decon Fluids Used Purging Dawn Deionized Water HNO;IDI Water Potable Water TSP Solution None Methanol Solution 

### Analytical Parameters

# ~PC&**~** voc, Method 8080 8021



### Weather Conditions/Notes: I 

## 'I

Filtered

No No 

### /0:(){)

.. 

## /.7; 0 0 /r)()vUL!M

'/. {f 

### I



# q, ·go 

## 3

Bailer PVC/Silicon Tubing Teflon/Silicon Tubing AirLift YS!FlowCell

Preservation None/Chill HCUChill Volume Req'd 2-liter 2 VOA vials

i) 

# \h.JJ..A \ .50. /9;: CJ 

## u,



# ;)_

/7 

# - I OOM.I I M



## 7 &'/ Clear Colored**Cloudy~**

# ~:::d~ Other Historical Datlt (see notes)



### Sampling WfL Equip Used

# ~ Watcrra

### ~ Electric Cond. Probe In-Line Filter Float Activated Press!Vac.Filter Tnterfuce Probe

Number of Filters Used

Sample Bottle ID Numbers I Other



### SlgnaWre:

# ~ 

# W11:49:06 

### a.m. 05-13-2011 3/12.------

2076216595 CMP



## Grotu:l!dwater Field Data Record Central Maine Power Company 

## Page { of\



# -- Project:

._I 

# o_·c_o_nn_o_r

______ ..... 

# J Project 

## Number:!.-----------. Date: 

# I Lj J 

# 2 

# 1/ l.o 1 

# CJ I End: 

# 092.5 

# :J Sample Location: 

# !M\N- 602 

# I Location Activity: 

# I Start: 

## D't4. S Field 

## QA Data: 

# D Field 

## Duplicate Collected ID: 

# l 1\.lQ

Water Level/Well 

## Data PID Reading at Wellhead:.

____ _ PID Background Reading:.

___ _

WeJIDqltb

# lit.S~ Ftl 

# IY\ :l; 

# '1 Fll W\-e llSV...Y 

# tct
Protective Casing Stickup ,.-- 

# 2

-c-5:......;.;::,F::.;;;t 

# I Protective Cuing! 

# I Ftl (from ground)

. , 

### v.
. WcU Differential

- ; 

# 0 ·j

_ Depth to Waf#C

## ~th ro s.:n:c:n .._I

____ F_,t

I
HeighlofWater 

# I Ft 

# I X

### ~ 0.06l/Ft(2") Colunm

. . 2.46l/FI (4") 5.60 l/FI (6")

=of 

# :===::::;F:::t 

# I _l/FtL_ ")

Middle of Ft 

# I Allowable Scn:cn

. Drawdown**~.** L/Purse Vol
L I Total Purged

Max Allowed Depth to Water Well Manmal DPVC 

# oss 0000

Well DiAmclel'

Well lulcgrily Good Prolectlve Casing Intaa WcUlo<:k 

# D 4 "

# o~ 

# §§§

Pump Set Depth 

# I

PurgeDat.a Historical Purge Rate 

# tJe' Mt-j 

### VYliV\ Purge Rate Historical Sampling Rate Sampling Rate 

### Sample Observation Ti=(min) Ul't'J'"m'" 

### \)I ClO Flow lUIXl (ml!min) 

### .J.. 

## L?O mt.._lt'lliiA Purge Vol (litem) Dq>tb to WAter (ft) 

## li. 52. Tcmp('C) 

## S",ll Spec. Cond. (umho/cm) 

## ii" 2- pH (units) 

## lo. 1.-f 

### I Tu.thidity (ntu) 

## 1-=t-.**~** DO (ppm) 

## La,-:;.::;

Time (min)**;l~:co** Flow Rate (mVmin)**lot:~** Purge Vol (lit=) Depth to Walt:r (ft) '11' 

## :":t5 Temp ('C) 

## =\-. til..\ Sp.:c. Cond. (umbo/em) 

### \SO pH(unlrs)**~** 

## '1. ("11( Tu.thidity (otu) k;, 

## .15 DO (ppm)**L\\~** 

### Equipment Documentation Decon Fluids Used Purging Dawn Deionized Water HNO,IDI Water Potable Walt:r TSP Solution None Methanol Solution 

### Analytical 

### Parameters

## ~ PCBs 

# tJ

voc. Method 8080 8021 Filtered**~0** :-<o 

## :5:oo**lo~co** 

## 1"5: 00 

## 21../0 I 

## -:z,n 

## i512.**(..,.~2. ·~.22**  

### '":} l. 

## 2 ':f..ICI 

### +.oi =1-. L.j**~-** 

### i "i C.} 

### 152 l44 

## s.CfL! 

## tj."'Y Co 

### I 

# o. '6&**lD.~.?l** 

## I q.<.:, 

## '-f.l q !...i,OO 

### "'i 

### .Q2.**OO~CD** 'l,"\ : b (')**~00 ~S"**  

# :to 

# ·::ro
l{, 

## '12.. 

## q l."·l- 'f,qi 

## 'i-r 'i.) 

### ,., '2...2.. 

## "':J-,o5f 1"10 

# is-o i"1b



# to {.p,D"'f**~.o:r ~.I)Ll**  

### ·;' ":Jl.? 

### ?J, tu**Y..o~** 

## '-It I..\' 

## 15"
Purging

Bailer PVC/Silicon Tubing TetiontSilicon Tubing AirLift YSI Flow Cell**Prc~rvatiou ~one/Chill**  HCL'Chill VolllJ1le Req'd 2-liru 2 VOA Yials



### WeatherConditions/Notes: )vr\n 

# t.t:YF 2.o;oo. l). 

### S" 

## lf,**0~** 

### ·-:;., '!-, 

## i.5o**~** 

### .'lb 

## 1'2.. ''"" '-'1.4;!.. Cleu Colored Clowf.y Turbid Odor Other Historical Data (see notes)

## S~ling [Equip Used Waleml Electric Cond. Probe In-Line Filter Float Activated Pres:.!Vac Filter**In~** Probe OtlleT Number of 

# Filters Used

Sample Bonle ID Numbers2076216595 CMP 11:49:28 

### a.m. 05-13-2011 4/12



## Groundl:water Field 

## Data Record 

## Central Maine Power Company 

## Page 

# j_ of 

# j_ Project: 1'--o_·_c_o_nn_o_r

______ __, 

## Project Number: Date: 

# I l,i..;t;_ I 

# 1 ] Sample Location: ltV\W 

## ·-50.3 Location Activity: 

# I Start: 

## 07'.'</?J j

. 

# ! End: 

## /():ex:) ] Field 

## QA Data: 

# D Field Duplicate Collected 

## ID: /Mw-:::03

## m~'V\A.S[) Water Le-vel/Well Data PID Background Reading:



# ----- PID Reading at Wellhead:

____ _ Measured Historical Top of Top of

Well Depth 

# I 13 ,7;(/:t 

# I

D.!pth to Water 

# I lj, 

# <e 

# oft I**~~rh** to Screen 

# I Ft 

# I**~~:~~fWater** 

# L'----F-ltl
X
Lengrhof Screen

Middle of Screen 

# -rzJ 

# D 

# 0**~** 

# DO

0.06 UFt {2") 2.46 Uft(4") 5.60UFt(6") _UFtL_'')

Allowable Draw down Protective Casing Stickup 

# I
{from ground)

Ll Purge Vol

Ll Total Purged

Max Allowed Depth to Water Well Material
Well Diameter

Well Integrity Good Protective Casing Intact Well Lock Protective**Casing!~-** '\C 

# Ft I
Well Differential

_ " -...(.. ::> '---------J 

# oss D Other 

# 04" DOther

# ~§§
Pump Set Depth 

# I

Purge Data Historical Purge 

### Rate Purge Rate 

### Historical Sampling Rate Sampling Rate Sample Observation

Time {min) Flow Rate (mVmin} Purge Vol {liters}. Depth to Water (ft) Temp("C} Spec. Cond. (umho/cm) pH {units) Turbidity (ntu) DO (ppm)

Time(min) Flow Rate (ml/min) Purge Vol (liters) Depth to Water (ft) Temp('C) Spec. Cond. (umho/cm) pH (units) Turbidity (ntu) DO (ppm) 

### Equipment Documentation Decou 

### Fluids Used Purging Dawn. Deionized Water HNOy'DI Water Potable Water TSP Solution None Methanol Solution 

### Analytical Parameters Method

## ~ PCBs 

# Ej
voc. 8080 8021



### Weather Conditions/Notes: Filtered No No 

### Sampling Peristaltic Pump Redi Flow II Bailer PVC/Silicon Tubing Teflon/Silicon Tubing Air Lift YSI Flow Cell

Preservation None/Chill HCL'Chill Volume Req'd 2 -liter 2 VOA vials

Q 

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



### Sampling W!L Equip 

### Used Watena

### ~ Electric Cone!. Probe In-Line Filter Float Activated Press/Vac Filter lnterfuce Probe Other Number of Filters Used

Sample Bonte ID Numbers



### Si nature: I

### 11:49:47 

### a.m. 05-13-2011 5/12-

2076216595 

### CMP



## Central Maine Power Company 

## Project Number: .._ 

# ______ _. 

## GroUIJ! &water Field Data Record

# Pr~ject: j O'Connor

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

## Sample 

## Location: 

# I M \N - \ 

## 0 

# (;;A 

# I Location Activity: 

# I Start: 

## j 

# D D 

# c:; 

# I
Field Duplicate Collected ID: / 

# M Vv

- 

# 1 0 {p 

# A 

# b Page_) 

# of[

Date: 1 

# LJ 

# /2.1 

# f2 o11:J

1 

### End: 

# Jo 'is:]
Field QA Data: 

# D

Water :Levei/WeJl Data

WeJIDcptb 

# /5 Cf' 

# I Ft 

# I**Dq,thtoWa~r** 

# I Q 1 \ Ft'

## ~:th !o

## ~tl 

# I Fl 

# I PID Reading at 

### Wellhead:

____ _ PID Background Reading:



# ---- 

# 1.0 ""omrical

# o~' 

# F:1**""""'~""'"""""" ~e** **"L"'~"''"lr------=Ft,..,J** (from ground)

### ~ Well Dilfcrcnti.al

_ ....._ ___ __.J 

# 0 0**~::!na,** 

# 0 PVC 

# D ss 

# 0 owr

Well Diameter 

# Dl" 

# o 4 •

# o~ Height ofWav=r 

# I

CoiUlllll '-·

___ __. 

# § § 

# § Ft 

# I X

## ~ O.MUI'o(n L/ Purge Vol 2.46I/F! (4} WeU Integrity Good S.60UFI(6} L I Total Purged Protec1:ive Cuing Intact

## Fe~ _I..IPt(_") WeU Lock

Mia.:Jle of**~** 

# Ftl Allowable Ft 

# I
Drawdown Pump Set Depth 

# I Max Allowed Ft 

# I
DeptiJtoWatl:r 

### Purge Data. Historical Purge Rate 

### Purge Rate 

## ·q. 5Q W\ 

## LIM 

## i 1\ 

### Historical Sampling Rate 

### Sampling Rate 

### Sample Observation
Time (min) Flow Rate (ml/Jnin) 

### l'lltJll' Vol (lltas) Depth to Wat.cr (fl) Tcmp("C) Spee. Cood. (umbo/em) pH (units) Turbidity (ow) DO (ppm)

Tirol: (min) Flow Rate (mVrnin) Purge Vol (lie=) Depth to WatA:r (ft) Temp ("C)

pH (units) Turbidity (ntu) DO (ppm) 

### Equipment Documentation Decon Fluids Used Purging Dawn Deionized Wat.eT HNO,IDIWau:r Potable Water TSP Solution None Methanol Solution 

### ·.Analytical 

## Parameters

-: PCBs VOC's Method 8080 8021 

# \ W ·, ther Conditions/Notes: J.'

Filtered**~0**

No /...1 

# <io
:l-,4 D



# ...**~** 

### '-**.~.,** 

## D,\.ll
Sampling Peristaltic Pump Redi Flowll Bailer PVC/SlJicon Tubing TefkmiSilicon Tubing Air Lift YSI Flow Cell 

### Purging

l'rescl"Vlllion :-lone/Chill Volwne Rcq'd 2 -liter HCL<Chill 2 VOA vials 

### l].\.( 

## z_ Clear Colon:d Cloudy Turbid Odor Other Historical Data (S<:Cnatt:.s)



## Sampling [Equip Used Warerra Elccaic Cond. Probe 

# § In-Line Filter Float Activated Press!Vac Filter lnlerf.tce !'robe O!Mr Number of Filters !;sed

Sample Bottle ID Numb= I**~···**11:50:09 

### a.m. 05-13-2011 6/12-

2076216595 

### CMP



## GrQu.lllldwater Field Data Record 

## Central Maine Power Company Page_Lof 

# J_
Date: 

# IY/2t h-all**~]** 

# I End: 

# II·;;)-] Projec:t: 

# I O'Connor 

## Project Number: /**;::;:::=;::::;==~** 

## Sample Location: 

# I M \N
·- \ Dlo 

# eJ Location Activity: 

# I Start: } / 

## Q 

# o Field QA Data: 

# D Field Duplicate Collected 

## ID:

Water Level/Well Data PID Reading at Wellhead:

____ _

.

### ~\**~1t.** 

### vi\. 

## 11--\ Measured Historical Top of Top of 

### PID Background Reading:



# ----

W•UO.,<h 

# j''q"\ 

# "I**~~** 

# 0 

# 0 [j

Depth to Water 

# 1·-\- 

# 5 • )$ Ft 

# l 

# 9e5>**\-\i~** 

# D 0**-~'1 ~r}** **~th** to

## s.=c~ - . HeightofWav:tr 

# I

Colunm '-·

___ ___. Ft 

# I
X

L.eng1h of Sctecn
Middle of Scm!n 

# FrJ

Ft 

# l**~** •ooUF<a1 2.46UFt(4") 5.60 UFI(6'') _l..!Ftl_'1

Allowable Ft 

# I

Drawdown Prolective Casing Stickll)l 

# I 2 1

.**~** Ft 

# I Protecti":e**C~gl~** (from ground)

_ _ ,**\0~** . Well Ddfucotial

## o~ 

# Slo Ftl

L/Purgc Vol

L I Total Purged

Max Allowed / Depth to Water Well Material DPVC 

# oss**o~** Well Diameter

Well Integrity Good Protcctivc Casing Intact Welli.oek 

# o 4 •

# o~ 

# §§§

Pump Set Depth 

# I

Purge Data Historical Purge Rate 

# 'i g) 

# mL-\ tn#f\ Purge 

### Rate ' Historical Sampling 

### Rate Sampling Rate
Time (min) Flow Rate (ml/:m.in) Purge Vol**(li~e<S)** Depth to Water (ft) Temp ("C) Spec. Cond. (umbo/em) pH (units) Turbidity (DIU) DO (ppm)

Timc{min) 

## 0\2, Flow Rate (mVmin)**~~\)** Purge Vol (lib:r:l)**+.:::;-,~** Depth lo Water (ft)

· Temp ("C) 

## 1'512.'-t**S~.Cond.(wnhoJcm)** 

# ((\**~** 

# :6 pH(units) 

# to.C lc; Turbidity (ntu) 

# o. DO (ppm) 

## 0,'31 11 

### Equipment Documentation Decon Fluids Used Purging Dawn Deionized Water HNO,IDI Water Potable Water TSP So I uri on None Methanol Solution 

### Analytical 

### Parameters Method 8080 8021 Filten:d ::-<o 

### Sampling Peristaltic Pump Rcdi Flow U Bailer 

### Purging

PVC/Silicon Tubing Tellon/Silicon Tubing Air Lilt YS! Flow Cell

Pn:scrvation**~ollCIChill** HCL-Chill Volume Req'd 2 -liter 2 VOA vials 

### Sample 

### Observation
Clear Colored Cloudy Turbid O<lor Other Historical Data (sec notes)



### Sampling [ Equip 

### Used Wat.em Electric Cond. Probe 

# § In-Line Filter Float Activated Pn:ss!Yac Filter Interface Probe Other Number of Filters t:scd

Sample Bonle ID Numbm**~-**11 :50:30 a.m. 05-13-2011 7/12-

-

2076216595 CMP



## G.roun dwater Field 

## Data Record 

## Project:

._l

# _o~·c_o_nn_o_r-;::==::;:=:;::::; Sample Location: 

# I M.\N

- 5\)]: 

# A Central Maine Power Company 

## Project Number:

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

## Activity: 

# I Start:

## I·~ 

# ·;}., 

# 6

# Page~orl Date: 

# b /2.,/lotl ] 

# ! End: \ 

## )o 

## $'" 

# J

Field QA Data: 

# 0 Field Duplicate Collected ID:
Water Level/Well Data

Well Depth

Depth to Water 

# I 1_1.. \0} Ft 

# I
[**l~>.~(p** Ft 

# I**~th** nJ S=CD 

# I Ft 

# I**~;::;rwa~rj** 

# '- ----F-'r 

# j x
Length of**~Q** Middle of S=en 

### PID Reading at 

### Wellhead:,

____ _ PID Background Reading:

___ _ Measured 

# 0 EJ 

# fi

O.OfiUFt(:Z") 2.46 UFt (4") 5.60 UFt (6") _UFIL_j

Allowable DrawdoWll 

# DO Protective 

# cz;:!r: ;!c.!j) 

# /·5

. V) 

# V Ft 

### 1

## ~:~~;:;~z J 11 , 

# I A, Ft 

### 1

L/Purge Vol
L I Total Purged

MuAllowed Depth 10 Water Well Mau:ri.al 

# 0 PVC 

# 0 ss 

# 0 0tMr

Well Diamet.:t

Well Integrity Good Protective Casing Jnl.llct WeDLock 

# 04" 

# Domer 

# §§§

Pump Set Depth 

# I

PurgeDat.a Historical Purge Rate 

## I 00 

# tndvnt"tl Purge Rate Historical 

### Sampling 

# :Rate

----- Sampling 

### Rate Sample Observation
Tim:: (min) Flow IU.te (ml/xn:in) Purge Vol (liters) Depth 10 Water (:ft) Temp(•C) Spec. Cond. (wnho/cm) pH(units} Turbidity (utu) DO (ppm}

Time (min) 

## o:·-'1;.::; Flow Rate (rnllmin) 

# \ oo Purge Vol (litcn!) Depth to Water (ft) 

## 0'1**.~s** Tempf'C) 

## (,....\-l Spec. Cond. (umbo/em) 

## l:;S" pH(unia} (£, )._t;J Twbidity (ntu)

### 1-:::t~ .DO (ppm) 

### )e..O.,L, 

### Equipment Documentation · Decon Fluids Used Purging Dawn Deionized Wafl=r" HNO{DI Water Potable Water TsP Solution None Methanol Solution 

### Analytical Parameters Method 8080 8021



### Weather Conditions/Notes: Filtered :--lo**h~:?n o·.'~5**  

### I 

## t-x-\ \OQ 

# q_c;y jn,f'l'l 

## \0. loi!J =!-, 0 

### i**"'5~** 

### 5"1 (n, 

## d. to 

## 1"1- I 

## ""'l'i? It::;" \.., 

### \D1 

## 0\o 

## q. CJ"1-

Purging

TetloniSilicon Tubing AirLift YS! Flow Cell

Preservation :-J'oneJChill HCL·Chill Volume Req'd 2- liter 2 YOA vials 

### f):"-\ D 

## \ffi 

# \n. t 

## 6 

# "'+-,**";)~")**



# sq 

# r. ••**6~** 

## 1\....l l q,9L1 Clear Co!on:d Cloudy Turbid Odor Olher Historical**D~ta** (see notes)



### Scrmpling 

### W!L Equip Used
Watcm.

## ~ Electric Cond. Probe lrrLine Filter Float Activated l'ressiVac Filter lntcrtl!ce Probe Other Number of Filters t.:sed

Sample Bortle ID Numbers2076216595 

### CMP 11:50:52 

### a.m. 05-13-2011 8/12



## Grmmdwater Field 

## Data Record Central Maine Power Company Project Number: 

## Page_! 

# ofJ. Project:

._I 

## _o_·c_o_nn_o_r

______ --'**~------------~** 

## Date: 

# I Lf -;;>. 1- 

# 1} 

# I End: 

# I 

# 2- 

# os; Sample Location: Field 

## QA Data:
Water Level/WeU Data 

## Location Activity: 

# I Start://.' 

# 3 

# 0
Field Duplicate Collected 

## ID:

PID Reading at Wellhead:

____ _ Pill Background Reading:.

___ _ Measured Historical Top of Top of

Well Depth

D.!pth to Water: 

# I 5o, d-k!Ft 

# I 

# !to, r; 1 Ft 

# I .(2] 

# o 

# o rn DO Protective Casing Stickup 

# I 7")

_ 

### Q Ft 

# I

(from ground) '--· ...:.0(_._,/'----....1. Protective Casing! 

# I-**~** 

# / Ft 

# I

Well Differential

.**~** "'- '-----___.l Well Material 

# ILSJ:vc 

# D
Other 

# D
Other

## ~;th to Screen L.I

_____ 

# Ft_.l

Height of Water 

# I Ft 

# I
X Column

. . Length of Ft 

# I

Screen

. Middle of· Screen 0.06 UFt (2") 2.46 UFt (4") 5.60 UFt (6") _UFt(_")

Allowable Draw down L1 Purge Vol

L I Total Purged

Max Allowed Deptn to Water Well Diameter

## ~2"

Well Integrity Good Protective Casing Intact Well Lock

Pump Set Depth 

# I

Purge 

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

## 5•00 {/1.) } {) [) 

### I 

# '5**~** 

# 00 Flow R<lte (ml/min)**~&** 

## "')fflt...l W\**~'S"** 

### \0\:) Purge Vol (liters) Depth to Water (fl)

### it~' 

## loO Temp(°C) 

## "l.t_.**~** Spec. Cond. (umho/cm) 

## 74 

## c:; pH (units)**'/~'S** Turbidity (ntu) 

## I C....<:f.. DO (ppm) 

### '-f' (Lf

Time(min) 

### "';0 

### :OCJ Flow R<lte (mllmin) 

### <(\) Purge Vol (liters) Depth to Water ( ft) 

## J-'S·Y\ Temp ("C)**10.~.':,** Spec. Cond. (umbo/em)**~t·t"** pH (units) 

# - cF, Turbidity (ntu} 2 

## !iJ I)( DO(ppm)**o~..Y'i\'** 

### Equipment 

### Documentation Decon 

### Fluids Used Purging Dawn 

## Y
Deionized Water HNO,iDI Water Potable Water TSP Solution None**~ethanol** Solution 

### Analytical Parameters

## ~ PCBs 

# 8

voc. Method 8080 8021



### Weather Conditions/Notes: \1, (A( 

### illj\.jliY_

Filtered

No No**'lt.~Cl'** 

## lf 

# tr S"l.l**~-;};** 

# +. \ -::j-**0~** 

## ; l**-~** (., 

# \. x'1**J..~** 

# 1c;·.au**I~**



### IS.4\o 

## '.O.Tt 

# 1..\ou -:t 

## oc; 

# 4. \VJ**;:J..~')(** 

### Sampling Peristaltic Pump RediFlow II Bailer PVC/Silicon Tubing Teflon/Silicon Tubing AirLift YSI Flow Cell

Preservation NoneiChill HCUChill Volume Req'd 2 -liter 2 VOA vials



# So 1o**·~oo** 

### S1)**/~,\'-1**

### 9.S~ 

## '-I DO 

# ·:::r. o-:::r •.;,. 

# }..::;**~** 

### d.'-1 d..SiOO 

### S\)**ts.·~-+** I 

### 0 

### ."2..'-t



## I.t"T**~** 

### ,0\n 

### u 

## OC-\ :;1. \,.,c;" Clear Colored Cloudy Turbid Odor Other Historical Data (see· notes)



### Sampling 

### .WIL Equip Used
Waterra

### ~ Elecoic Cond. Probe In-Line Filter Float Activated Press!Vac Filter Interface Probe Other Number of Filters Used

Sample Bottle ID Numbers



### Signature: 

### \2076216595 

### CMP 11:51:11 

### a.m. 05-13-2011 9/12-



## Groundwater Field Data Record Project: 

# I O'Connor 

## Sample Location: Central Maine Power Company Project Number: Page_J 

## of_l
Date: 

# I 4-

## ~ I

- 

## I f ] 

# I End: 

# 13 : 

# ·:z 5 

# J
Field QA Data: 

# I Ow 

# -ao 16 

# I Location Activity:

# ~s;=tart~: ::/3=:::

# =o=C":>~I 

# D Field Duplicate Collected ID: 

# wl**i\J-=....:0~----l' l-·~** **~'4·** 

### Water Le-vel/Well Data

Well Depth 

# i·r 

# cr 

# ? I 

## rt 

# I

Depth to Water [ 

# 'b , 'b J I Ft 

# I**~th** to Screen 

### I._

____ F--'t 

# I

HeightofWarer 

# I Ft 

# I X Column

. . Length of Screen
Middle of Screen 

### Purge 

### Data

Time(min) Flow Rate (ml/min) 

### PID Reading 

# at Wellhead:

____ _ PID Background Reading:

___ _ Measured Historical · Top of 

# ·CKJ 

# D 

# KJ D

0.06 UFt (2'') 2.46 UFt (4'') 5.60 Urt (6") _UFtL_")

Allowable Drawdown Top of

# ~ ·to -tz;f

# ~c... Protective Casing Stickup 

# I

1 

# .:0 ' Ft 

# I Protective Casing/ 

# I Ft 

# j (from ground) '-· ------'· Well Differential '--------'· Well 0PVC 

# oss D Other Material
Well 

# 02" []4" 

# D Other Diameter L/Purge Vol y 

# * NA Well Integrity Good

# ~ §J. § L I Total Purged Protective Casing Intact Well Lock

Max Allowed Depth to Water Pump Set Depth 

# I

Historical Sampling Rate 

### Sampling Rate Sample**Observa~** 1**Clear~** Purge Vol (litel'll) Depth to Water (ft) Cloudy C-1'

.. Colored,.,**~~,**

Temp("C) Spec. Cond. (umho/cm) 

### Pl! (unitl!)**Turbi~ity** (ntu) DO (ppm)

Time(min) Flow Rate (mllmin) Purge Vol (liters) 

### I 

## '"' 11 Depth to Water {ft) 

# .::::._ --r \}Jt7 

## ,j Temp('C) ,;**~n\1{** 

## Y' Spec. Cond. (umholcm) !1 

# v jUJ pH (units) 

### ( )r ,I\ 

# vy Turbidity (ntu) , .. Iii 

### )/J"T DO (ppm) 

## / Equipment Documentation

econ Fluids Used Purging

Dawn Deionized Water HNOyDI Water Potable Water TSP Solution None Methanol Solution 

### Analytical Parameters

# srPC~**~** voc. Method 8080 8021



### Weather Conditions/Notes: Filtered No No 

### Sampling Peristaltic Pump Redi Flow II Bailer PVC/Siiicon Tubing Teflon/Silicon Tubing Air tift YS!Fiow Cell

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

# I
Odor · Other Historical Data (see notes)



### Sampling WIL Equip Used Waterra

### ~ Electric Cond. Probe In-Line Filter Float Activated Press!Vac Filter Interfuce Probe ,
Number of Filters Used

Sample Bottle lD Numbers I Other


## I 

# I
! 'i 

# I I11:51:32 

### a.m. 05-13-2011 10 /12

2076216595 

### CMP



## Groundwater Field 

## Data Record Central Maine Power Company**~ ~------------~**  

## Pagel_ofJ_ Date: 

# l4121}2oU] j End: 

### J 

# '-/OS ] Project: 

# I O'Connor 

# I Project Number: ·..__ ____

## ---~ Sample

# Locatio~: 

# I f\\W

- \ 0'-\ 

# B 

# l Location Activity: j Stan: 

## l

# ~ '?l 

# 5'" Field QA Data: 

# D Field Duplicate Collected .ID:
Water**~evel!Well** 

### Data

Well Dt:ptb

Dt:prh ro Water

Depth ro .screen Top

LengtlJ of Screen
Middle of Screen 

# l·4s.oFtl I \JJ5 Fr 

# I 

# I PID Reacling at 

### Wellhead:.

____ _ 

### PID Background Reading:



# ---- Measun:d Historical Top of Top of 

# rtJDDU DO

0.06 UFt (2'1 2.46UFt(4") 5.60 UFr (6'1 _UFt(_")

Allowable Dr.awdown 

## (\'U£t5wd Protective CMing Sticlcupl,.. 

# -i-- 1 . -t--Fr...,/ Ptotecri':e**Ca..i~gl~r-~l.-{-£/'"-.** --=Fr,-,1 (from ground)

_**~** 

### o \GJ

_ Well DJifercntJal

__ t !)**'-----"~-___;**

L/Purge Vol
L I Total Purged

MaxAiklwed Depth to Water Well Material 

# D PVC 

# D SS 

# 0 Oth:r

Well Diamcll:r 

# 02"

Well Integrity Good Protective Casing Intact Well Lock 

# 04"**o~r** 

# §§§

Pump Set Depth 

# I

PurgeDat!ll. 

### Historical Purge Rate 

## IOD VVJLj 

## M. 

# iYl, Purge Rate Historical Sampling Rate 

### Sar.t1pling Rate Sa:nPle 

### Observation
Time (min) Flow Rate (mJirnin) Purge Vol (litz:rs) Depth fD Water (:ft} Tcmp('C) Spe<:. Cond. (umho/cm) pH (units) Turbidity (ntu) DO (ppm)

Time(min) 

## 0: 

## :i c.;- Flow Ral.e (ml!min) 

### \0\) Purge Vol {li!Ct'S) Depth to Wat.er (ft)

### 13.~9 Temp("C} 

## "'f.li? Spec. Cood.. (umho/cm) 

### '-.-4 '-l 

### t

.... pH(units) 

### to 

## <../9 Turbidity (ntu) 

## 0.2.. OO(ppm) 

### I 

# I.-I"+ Equipment Documentation Dec on Fluids Used Purging

Deionized Water HNO,IDI War.:r Potable Water TSP Solution None Metfumol Solution 

### Analytical Parameters Method 8080 8021 Filtered**~0** So 

## il 

# >?JO IDO


### I ::J I 

# b'1 q**D~** 

## 4&..1'1 t.l.S3 

# o. i'1' i S'-i

, .Sampling

' · Peristaltic Pump Redi l'low li Bailer 

### Purging

PVC/Silicon Tubing TefloniSilicon Tubing AirLift YSI Flow Cell

Preservation :-lontiChill HCL•Chill VolUme Rcq'd Z -lircr 1 VOA vials



### Weather Conditions/Notes: 

# cl 0\.idvj 

# JV; 

# t1v\vj J 

# y 

# cfF Signature: Clear Coklrcd Cloudy Tw-bid Odor Other Historical Data (seenot<:s)



### Scunpling W!L Equip 

### Used Watem 

# §

Electric Cond. Probe In-Line Filter Float Activated PreSSJVac Filter Interface Probe Other Numb<>r ofFilten; !;sed

Sample Bortle lD Numb<>J'3.**.~** 

### ..



## i : ! ; 

# :**~;** 

# l

IG }:

. 

### '**OT-13-~011**

I 

### !
I ' 

## ! I '



# J' •+

: : ! 

### \.1]

. !

# ·~-. I

. ! ("\ . ' . :
.

### ~ G\ '

........ 

### :**:~J** 

### .**·~** i l ; : 

# :'=d1""·

# ~**;~**

# ·~ 

# J·

'V) 

# ;
. • -.1i 

# ! 

# :-Q ' ; q_

. •-r 

# fJ,**~** 

# ;**~-J-f** 

# :**~ ·~**  I 

### :

## ~ . 

# ' ' t· 0! 

# rj:)

. -r: c._f

# ~ 

# -2076216595 

### CMP 11:52:17 

### a.m. 05-13-2011 12/12Central Maine Power (222350) August 2011

MOM 2011 Annual Report 

# APPENDIX D: LABORATORY INFORMATION

# CENTRAL MAINE POWER CO. O'CONNOR SITE SE2119

KATAHDIN ANALYTICAL SERVICES, INC. 600 TECHNOLOGY WAY SCARBOROUGH, ME 04074Cert No. E87i'i0·1



## TABLE OF CONTENTS

Total number of pages: 154

SAMPLE DATA PACKAGE 

## 0000001

Narrative 

## 0000002 to 

## 0000004 Supporting Documents**--~-~~-~-~~------** 

## 0000005 to 

## 0000007 Chain of Custody Record**-~~~~-----** 

## 0000008 to 

## 0000008 Login Report 

# ------- 0000009 to 

## 0000010

SAMPLE DATA SUMMARY
Report of Analytical Results 

# ------ AOOOOOOl to 

## A0000027

VOLATILE DATA 

## 1000001
QC Summary 

## 1000002 to 

## 1000029 Sample Data 

## 1000030 to 

## 1000044 Standards Data 

## 1000045 to 

## 1000053 Logbooks and Supporting Documents 

## 1000054 to 

## 1000059

PCB DATA 

## 2000001
QC Summary 

## 2000002 to 

## 2000013 Sample Data 

## 2000014 to 

## 2000027 Standards Data 

# --- 2000028 to 

## 2000052 Logbooks and Supporting Documents 

## 2000053 to 

## 2000058

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

### Technology Way, Scarborough, ME 04074 www.katahdinlah.com

# SAMPLE DATA PACKAGE

OOCXJOOI

## SDG NARRATIVE KATAHDIN ANALYTICAL SERVICES CENTRAL 

## MAINE POWER CO. O'CONNOR SITE SE2119 Sample Receipt
The following samples were received on April 22, 2011 and were logged in under Katahdin Analytical Services work order number SE2119 for a hardcopy due date of May 2, 2011.

KATAHDIN Sample No. SE2119-1 SE2119-2 SE21 19-3 SE2119-4 SE2119-5 SE2119-6 SE2119-7 SE2119-8 SE2119-9 SE2119-10 SE2119-ll SE2119-12 SE2119-13 CENTRAL 

## MAINE POWER CO. Sample Identification MW-106A MW-I06B MW-104B MW-507A MW-508B MW-106AD MW-502 OW-201B MW-501 MW-503 EB-1 FB-1 

## TRIP BLANK
The samples were logged in for the analyses specified on the chain of custody form. All problems encountered and resolved during sample receipt have been documented on the applicable chain of custody forms.

We certifY that the test results provided in this report meet all the requirements of the NELAC standards unless otherwise noted in this narrative or in the Report of Analysis. Sample analyses have been performed by the methods as noted herein.

Should you have any questions or comments concerning this Report of Analysis, please do not hesitate to contact your Katahdin Analytical Services Project Manager, Ms. Shelly Brown. This narrative is an integral part of the Report of Analysis.

Organics Analysis

The samples of work order SE2119 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, IT, ITA, and 

## ill 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 of Analysis.

P.O. Box )40, Scrrbomugh, 

### ME 04070 • Tel: (207) 874-2400 • Fax: (207) 775-4029 • 

### GOO Technology Way, Sc.11borougCXJh,**ME~O'** I) 

### www.lmtahdinlab.com \.....A._)'\...J**~**

## Sample SE2119-10 was used for the Matrix Spike (MS) and Matrix Spike Duplicate (MSD), as per client request.
8260B Analysis

There were no protocol deviations or observations noted by the organics laboratory staff for this analysis.

8082 Analysis Samples SE2119-5, 7 and 8 had low recoveries for the surrogate TCX on channel A which were outside of the laboratory established acceptance limits. Since the recoveries for TCX on channel B and DCB on both channels were acceptable, the samples were not reextracted.

The opening CV (file 7ED685) had a high response for TCX on channel A and a low response for Aroclor 1260 on channel B which resulted in %D's that were outside of the method acceptance limit of 15%. Since the responses were acceptable on the confirmation channels, the associated samples were not reanalyzed.

The opening/closing CV (file 7ED700) had high responses for TCX and Aroclor 1016 on channel A and a low response for Aroclor 1260 on channel B which resulted in %D's that were outside of the method acceptance limit of 15%. Since the responses were acceptable on the confirmation channels, the associated samples were not reanalyzed.

The opening/closing CV (file 7ED715) had high responses for TCX on both channels and a high response for Aroclor 1016 on channel A which resulted in %D's that were outside of the method acceptance limit of 15%. Since the Aroclor 1016 response was acceptable on the confirmation channel, the associated samples were not reanalyzed. The associated samples may be biased high forTCX.

The closing CV (file 7ED730) had high responses for TCX and DCB on both channels and a high response for Aroclor 1016 on channel A which resulted in %D's that were outside of the method acceptance limit of 15%. Since the Aroclor 1016 responses were acceptable on the confirmation channel, the associated samples were not reanalyzed. The associated samples may be biased high for TCX and DCB.

The LCS WG90706-2 had a high recovery for Aroclor 1260 which was outside of the laboratory established acceptance limits. Since the LCSD had acceptable recoveries, the associated samples
were not reextracted.

There were no other protocol deviations or observations noted by the organics laboratory staff. Cc·rt r,ro. ER7fiO.l



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6. Volatiles free of headspace: 

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# rV 

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## \../" 

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### Received in airtight container? ../ 

### Received in methanol?
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## ../

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# ./**~** 

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# Katahdin

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### ---- Date -/ Time By: Relinquished By: (Signature) -oate 

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---,--, THE TERMS AND CONDITIONS ON THE REVERSE SIDE HEREOF SHALL GOVERN SERVICES, EXCEPT WHEN 

### A SIGNED CONTRACTUAL AGREEMENT EXISTS. I By:

Received 

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# Ct:JJ()OJ~ ORIGINALANALYTICAL SERVICES 

### Login Number: SE2119

Account:UTILIT001 

### Katahdin Analytical Services Login Chain of Custody Report (lno1) May. 18, 2011 08:32AM Quote/Incoming: OCONNER
NoWeb Page: 1 of 2

Utility Shared Services Corporation 

### Login Information:

Project: UTILITCMP001

Primary Report Address: Roy Koster Central Ma·me 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

SE2119-1 MW-106A

Malrlx Product Aqueous s SW8D82-S Aqueous s SW826D-S
SE2119-2 MW-1068

MatriK Product Aqueous s SW8082-S Aqueous s SWB260-S
SE2119-3 MW-1048

MatriK Product Aqueous s SW8082-S Aqueous s SW8260-S
SE2119-4 MW-507A

MatriK Product Aqueous s SW8082-S Aqueous s SW8260-S
SE2119-5 MW-5088

MatriK Product Aqueous s SW8082-S Aqueous s SWB260-S ANALYSIS INSTRUCTIONS CHECK NO. CLIENT PO# PCB extract to 1ml

45000204639 CLIENT PROJECT MANAGE : CONTRACT COOLER TEMPERATURE DELIVERY SERVICES EDD FORMAT LOGIN INITIALS PM PROJECT NAME QC LEVEL REGULA TORY LIST REPORT INSTRUCTIONS

SDGID SDG STATUS KAS027-XLS DO SM8 0' Connor Site 

### Ill

email pdf and EDD to Lori, Email PDF to Roy, No HC, email pdf to Josh Bowe also jbowe@woodardcurran.com

Collect 

### Receive Verbal Due 

### Date/Time Date 

### PR Date Date Mailed

21-APR-1110:45 22-APR-11 02-MAY-11

Ha/d Date (shortnst) Bottle Typo BottlaCounl Comments 28-APR-11 1 L N-Amber Glass 05-MAY-11 40ml Vial+HCl
21-APR-1111:25 22-APR-11 02-MAY-11

Hold Dato (shorlost) Bottle Typo Bollia Count Comments 28-APR-11 1L N-Amber Glass 05-MAY-11 40ml Vial+HCl
21-APR-11 14:05 22-APR-11 02-MAY-11

Hold Data (shorlost) Bottle Typo BottloCount Commrmts 28-APR-11 1 L N-Amber Glass 05-MAY-11 40ml Vial+HCl
21-APR-1113:05 22-APR-11 02-MAY-11

Hold Dato (shorlost) Bottle Type Bottle Count Comments 28-APR-11 1L N-Amber Glass 05-MAY-11 40ml Via!+HCl
21-APR-11 12:05 22-APR-11 02-MAY-11

Hold Dolo (shorlost) Bolt/a Typo Botllo Count Comments 28-APR-11 1 L N-Amber Glass 05-MAY-11 40ml Vial+HCl 

# ocxxxx:RANALYTICAL SERVICES 

### Login Number: SE2119

Account: UTILIT001 

### Katahdin Analytical Services Login Chain of Custody Report (lno1) May. 18, 2011 08:32AM Quote/Incoming: OCONNER
NoWeb Utility Shared Services Corporation
Project: UTILITCMP001



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

### Date

SE2119·6 MW-106AD 21-APR-1110:45 22-APR-11

Matrix Produr:t Hold Data (shor1ast) Bollia Typo Bottle Count Aqueous 

### s SW80B2·S 28-APR-11 1 L N-Amber Glass Aqueous 

### s SW826G-S 05-MAY-11 40ml Viai+HCI
SE2119-7 MW-502 21-APR-11 09:25 22-APR-11

Matrix Produr:t Hold Date (shorlcst) Batt/a Type Bottle Count Aqueous 

### s SW8082-S 28-APA-11 ll N-Amber Glass Aqueous 

### s SWB260·S 05·MAY·11 40ml Vial+HCI
SE2119-8 OW-2018 21-APR-1113:40 22-APR-11

Matrix Produr:l Hold Date (shorlcst) Bolt/a Typo Batt/a Count Aqueous 

### s 5WB082-S 28-APR-11 ll N-Amber Glass Aqueous 

### s 5W8260-S 05-MAY-11 40mL Viai+HCI
SE2119-9 MW-501 21-APR-11 09:10 22-APR-11

Matrix Produr:t Hold Data (shor1cst) Botlle Typo Batt/a Count Aqueous 

### s SW8082-S 28-APR-11 1 L N-Amber Glass Aqueous 

### s SWB260·S 05-MAY·11 40ml Viai+HCI
SE2119-10 MW-503 21-APR-11 10:10 22-APR-11

Matrix Produr:t Hold Date (shor1cst) Batt/a Type Bolt/a Count Aqueous 

### s SWBOB2-5 28-APR-11 1 L N-Amber Glass Aqueous s SW8260-S 05-MAY-11 40ml Viai+HCI
SE2119-11 EB-1 21-APR-1114:15 22-APR-11

Matrix Produr:t Hold Data (shor1esl} Botllo Typo Bolt/a Count Aqueous s SW8082-5 28-APA-11 1L N-Amber Glass Aqueous 

### s SW8260-S 05-MAY-11 4Dml Viai+HCI
SE2119-12 FB-1 21-APR-1110:30 22-APR-11

Matrix Produr:t Hold Date (shorlesl} Bottle Typo BottlaCount Aqueous 

### s SWBOB2-S 28-APR-11 1L N-Amber Glass Aqueous s SW8260-S 05-MAY-11 40ml Viai+HCI
SE2119-13 TRIP BLANK 12-APR-11 01:30 22-APR-11

Molrix Product Hold Date (shot1csl} Bottlo Type Bottlo Count Aqueous s SWB260·S 26-APR-11 40mL Viai+HCI



### Total Samples: 

### 13 Total Analyses: 

### 25 Page: 2 of 2



### Due Date Mailed

02-MAY-11

Comments

02-MAY-11

Comments

02-MAY-11

Commants

02-MAY-11

Comments

02-MAY-11

Commants MSIMSD (8 VOA vials)

02-MAY-11

Commants

02-MAY-11

Comments

02-MAY-11

Commonts



# OOQOQ\DCentral Maine Power (222350) August 2011

MOM 2011 Annual Report 

# APPENDIX E: INFERRED OVERBURDEN GROUNDWATER

CONTOUR MAP

## WOODARD

CURRAN COMMITMENT & INTEGRITY DRIVE RESULTS | www.woodardcurran.com 880.426.4262 PORTLAND, MAINE 04102 41 HUTCHINS DRIVE//--·\1I\"T \"-J\"-./'\IIIII\\\\\\JIIIIIJI\<lOt-.-\II\'\IfIIIIII'(\.../.....-.....__...._PTALEGEND:FREEPRODUCTOILMONITORINGLOCA110NLONGTERMMONITORINGLOCATlONMONITORINGWELLSDECOMMISSIONEDSEPTEMBER2008DESIGNATEDAREAMARKERS-SURVEYEDBYEPRO2002REVISED10-SIDEDDESIGNATEDSUPERFUNDSITEBOUNDARYGROUNDWATERCONTOURFLOWDIREC110NTOPOGRAPHICINFORMATlONISAPPROXIMATE.TOPOGRAPHICINFORMATlONHASBEENCOMPILEDFROMORIGINALSITEPLANAND1999SURVEYOFREMEDIATEDAREA50'050'1DO'--------BARSCALE1"=50'CHECKGRAPHICSCALEBEFOREUSING>-I"':::;;3:u[.?1lLJICD<(o5woY<nunWNINUN;..:rn;..:omw1'5§:(/j<(WrY00Q.-:::E(/)OoUztt:2Ott:ZL&JZl1.0::::>tJ(I)bJOBN0:222350.02DATE:JULY2011SCALE:ASNOTEDAPPENDIXECentral Maine Power (222350) August 2011

MOM 2011 Annual Report 

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

## Appendix F Summary of Oil Thickness in TWA II Wells, April 2011

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 2011 Annual Report F-1 August 2011

## Appendix F Summary of Oil Thickness in TWA II Wells, April 2011

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 -- 9/1/2010 0.02 0 -- -- 0.03 -- 1/6/2011 0.05 0 -- -- 0 -- 3/1/2011 0 0 -- -- 0 --
NM = Not Measured -- = Wells decommissioned September 2008. * = Measured as part of the VER System operation

Central Maine Power (222350) MOM 2011 Annual Report F-2 August 2011Central Maine Power (222350) August 2011

MOM 2011 Annual Report 

# 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 Indicates the compound was analyzed for but not detected above the specified level. This level may be the Limit of Quantitation (LOQ)(previously called Practical Quantitation Level (PQL)), the Limit of Detection (LOD) or Method Detection Limit (MDL) as required by the client.

*



## D

E

J Note: All results reported as "U" MDL have a 50% rate for false negatives compared to those results reported as "U" PQULOQ or "U" LOD, where the rate of false negatives is <1 %. 

## Compound recovery outside of quality control limits.

Indicates the_cesult was obtained. from analysis of a diluted.sample. Smmgate 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 Limit of Quantitation (LOQ)(previously called 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).

DM-002- 

## Revision 3- 04/13/2011

## Katahdin Analytical Services A0000003 Client: Utility Shared Serv Project: O'CONNER SITE PO No: Sample Date: 04/21/11 Received Date: 04/22/11 Extraction Date: 

### Analysis Date: 29-APR-2011 20:38 Report Date: 05/09/2011 Hatrix: WATER %: 

### Solids: NA 

## KATAHDIN ANALYTICAL SERVICES Report of Analytical Results

Lab ID: SE2119-l Client ID: MW-106A SDG: SE2119 Extracted by: 

### Extraction Method: SW846 5030 Analyst: DJP Analysis Method: SW846 8260B Lab Prep Batch: WG90898 Units: ug/1



### CASJI 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 99% 17060-07-0 

### l,2-Dichloroethane-D4 101% 2037-26-5 Toluene-DB 102% 460-00-4 

### P-Bromofluorobenzene 98%
Page 01 

### of 01 D0988.D Adj.MDL 0.3 0.2 0.3 0.2 0.2 0.4 0.3 0.2

## Katahdin Analytical Services A0000004 Client: Utility Shared Serv Project: O'CONNER SITE PO No: Sample Date: 04/21/11 Received Date: 04/22/11 Extraction Date: 

### Analysis Date: 29-APR-2011 21:12 Report Date: 05/09/2011 Matrix: WATER % Solids: NA 

## KATAHDIN ANALYTICAL SERVICES 

## Report of Analytical Results

Lab ID, SE2119-2 

### Client ID: MW-106B 

## soo, SE2119 

### Extracted by: Extraction Method: SW846 5030 Analyst: DJP Analysis Method: SWB46 8260B Lab Prep Batch: WG90898 Units: ug/1



### CAS# Compound Fl.ags Resul.ts 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 100% 17060-07-0 

### 1,2-Dichloroethane-04 100% 2037-26-5 

### Toluene-DB 102% 460-00-4 

### P-Bromofluorobenzene 100% 

### Page 01 of 01 D0989 .D

## Katahdin Analytical Services A0000005 Client: Utility Shared Serv Project:**O'CO~lliER** SITE PO No: Sample Date: 04/21/11 

### Received Date: 04/22/11 Extraction Date: 

### Analysis Date: 29-APR-2011 21:44 Report Date: 05/09/2011 Matrix: WATER 

### % Solids: NA 

### KATAHDIN ANALYTICAL SERVICES 

## Report of Analytical Results

Lab ID: SE2119-3 Client ID: MW-104B SDG: SE2119 Extracted by: 

### Extraction Method: SW846 5030 Analyst: DJP 

### Analysis Method: SW846 8260B Lab Prep Batch: WG90898 Units: ug/1

CAS# Compound 

### Flags Resul.ts 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 1 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 J 0.2 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 4 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 100% 17060-07-0 1,2-Dichloroethane-04 100% 2037-26-5 Toluene-DB 103% 460-00-4 P-Bromofluorobenzene 99% 

### Page 01 of 01 00990.0

## Katahdin Analytical Services A0000006 Client: Utility Shared Serv Project: O'CONNER SITE PO No: Sample Date: 04/21/11 

### Received Date: 04/22/11 Extraction Date: 

### Analysis Date: 29-APR-2011 22:17 Report Date: 05/09/2011 

### Matrix: WATER % Solids: NA 

## KATAHDIN ANALYTICAL SERVICES Report of Analytical Results

Lab ID: SE2119-4 Client ID: MW-507A SDG: SE2119 Extracted by: 

### Extraction Method: SW846 5030 Analyst: DJP 

### Analysis Method: SW846 826DB Lab Prep Batch: WG90898 

### Units: ug/1

CAS# Compound Flags Results 

### DF PQI. 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 J 

### 0.4 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 99% 17060-07-0 

### l,2-Dichloroethane-D4 101% 2037-26-5 Toluene-DB 

### 102% 460-00-4 P-Bromofluarobenzene 

### 99%
Page 01 of 

### 01 D099l.D Adj.MDL 

### 0.3 0.2 0.3 0.2 0.2 0.4 0.3 0.2

## Katahdin Analytical Services A0000007 Client: Utility 

### Shared Serv Project: O'CONNER SITE PO No: Sample Date: 04/21/11 Received Date: 04/22/11 Extraction Date: Analysis Date: 04-MAY-2011 15:52 Report Date: 05/09/2011 Matrix: WATER % 

### Solids: NA 

## KATAHDIN ANALYTICAL SERVICES Report of Analytical Results

Lab ID: SE2119-5 Client ID: MW-SOBB SDG: SE2119 Extracted by: 

### Extraction Method: SW846 5030 Analyst: TTC 

### Analysis Method: SW846 8260B Lab Prep Batch: WG91081 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 101% 17060-07-0 

### 1,2-Dichloroethane-04 104% 2037-26-5 Toluene-DB 104% 460-00-4 

### P-Bromofluorobenzene 104%


### Page 01 

### of 01 DllOl.D Adj.MDL 0.3 0.2 0.3 0.2 0.2 0.4 0.3 0.2

## Katahdin Analytical Services A0000008 Client: Utility Shared Serv Project: O'CONNER SITE 

### PO No: Sample Date: 04/21/11 Received Date: 04/22/11 

### Extraction Date: Analysis Date: 04-MAY-2011 16:24 Report Date: 05/09/2011 Matrix: WATER 

### % Solids: NA 

## KATAHDIN ANALYTICAL SERVICES Report of Analytical Results

Lab rn, SE2119-6 

### Client ID: MW-106AD SDG' SE2119 

### Extracted by: Extraction Method: SW846 5030 Analyst: TTC Analysis Method: SW846 8260B Lab Prep Batch: WG91081 Units: ug/1

CAS# 

### Compound Flags Resu1ts 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-Dichlorabenzene 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 101% 17060-07-0 

### 1,2-Dichloroethane-04 104% 2037-26-5 Toluene-DB 103% 460-00-4 

### P-Bromofluorobenzene 103%
Page 01 of 01 Dl102.D

## Katahdin Analytical Services A0000009 Client: Utility Shared Serv Project: O'CONNER SITE PO No: 

### Sample Date: 04/21/11 Received Date: 04/22/11 Extraction Date: 

### Analysis Date: 04-MAY-2011 16:56 Report Date: 05/09/2011 Matrix: WATER % Solids: NA 

### KATAHDIN ANALYTICAL SERVICES 

## Report of Analytical Results

Lab 

## ro, SE2119-7 

### Client ID: MW-502 SDG: SE2119 

### Extracted by: Extraction Method: SW846 5030 Analyst: TTC 

### Analysis Method: SW846 8260B Lab Prep Batch: WG91081 Units: ug/1

CAS# Compound Flags Results DF PQI. 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 102% 17060-07-0 

### 1,2-Dichloroethane-04 104% 2037-26-5 Toluene-DB 102% 460-00-4 

### P-Bromofluorobenzene 102%
Page 01 of 01 01103 .D

## Katahdin Analytical Services A0000010 Client: Utility Shared Serv Project: O'CONNER SITE PO No: Sample Date: 04/21/11 

### Received Date: 04/22/11 Extraction Date: 

### Analysis Date: 05-MAY-2011 09:54 Report Date: 05/09/2011 Matrix: WATER % Solids: NA 

## KATAHDIN ANALYTICAL SERVICES Report of Analytical Results

Lab ID: SE2119-8 Client ID: OW-201B SDG: SE2119 Extracted by: 

### Extraction Method: SW846 5030 Analyst: TTC 

### Analysis Method: SW846 8260B Lab Prep Batch: WG91152 Units: ug/1

CAS !I 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 1 1.0 1 1 0.2 541-73-1 1,3-Dichlorobenzene 6 1.0 1 1 0.3 106-46-7 1,4-Dichlorobenzene 3 1.0 1 1 0.2 95-50-1 1,2-Dichlorobenzene 9 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 99% 17060-07-0 1,2-Dichloroethane-D4 104% 2037-26-5 Toluene-DB 103% 460-00-4 

### P-Bromofluorobenzene 104%
Page 01 of 01 D112l.D

## Katahdin Analytical Services A0000011 Client: Utility Shared Serv Project: O'CONNER SITE PO No: Sample Date: 04/21/11 Received Date: 04/22/11 Extraction Date: Analysis Date: 05-MAY-2011 10:26 Report Date: 05/09/2011 Matrix: WATER % Solids: NA 

## KATAHDIN ANALYTICAL SERVICES 

## Report of Analytical Results

Lab ID: SE2119-9 Client ID: MW-501 SDG: SE2119 Extracted by: Extraction Method: SW846 5030 Analyst: TTC 

### Analysis Method: SW846 8260B Lab Prep Batch: WG91152 

### 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 J 0.2 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-Trichlorabenzene 

### u 1 1.0 1 1 0.2 1868-53-7 

### Dibromofluoromethane 100% 17060-07-0 

### 1,2-Dichloroethane-04 106% 2037-26-5 Toluene-DB 102% 460-00-4 

### P-Bromofluorobenzene 102% 

### Page 01 

### of 01 D1122.D

## Katahdin Analytical Services A0000012 Client: Utility Shared Serv Project: O'CONNER SITE PO No: Sample Date: 04/21/11 Received Date: 04/22/11 Extraction Date: 

### Analysis Date: 05-MAY-2011 10:57 Report Date: 05/09/2011 

### Matrix: WATER %: 

### Solids: NA 

## KATAHDIN ANALYTICAL SERVICES Report of Analytical Results

Lab ID: SE2119-10 Client ID: MW-503 SDG: SE2119 Extracted by: 

### Extraction Method: SW846 5030 Analyst: TTC Analysis Method: SW846 8260B 

### Lab Prep Batch: WG91152 Units: ug/1



### CAS# Compound Flags Resul.ts 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 99% 17060-07-0 

### 1,2-Dichloroethane-D4 104% 2037-26-5 Toluene-DB 102% 460-00-4 

### P-Bromofluorobenzene 103% 

### Page 01 

### of 01 Dll23 .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'CONNER SITE 

### PO No: Sample Date: 04/21/11 

### Received Date: 04/22/11 

### Extraction Date: Analysis Date: 04-MAY-2011 21:02 Report Date: 05/09/2011 Matrix: WATER % Solids: NA 

## KATAHDIN ANALYTICAL SERVICES Report of Analytical Results

Lab ID: SE2119-11 Client ID: EB-1 SDG: SE2119 Extracted by: 

### Extraction Method: SW846 5030 Analyst: DJP Analysis Method: SW846 8260B 

### Lab Prep Batch: WG91129 Units: ug/1

CAS# Compound Fl.ags 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 97% 17060-07-0 

### l,2-Dichloroethane-D4 102% 2037-26-5 Toluene-DB 102% 460-00-4 P-Bromofluorobenzene 101%
Page 01 of 01 D1109.D

## Katahdin Analytical Services A0000014 Client: Utility Shared Serv Project: O'CONNER SITE 

### PO No: Sample Date: 04/21/11 

### Received Date: 04/22/11 

### Extraction Date: Analysis Date: 04-MAY-2011 21:34 Report Date: 05/09/2011 Matrix: WATER 

### % Solids: NA 

## KATAHDIN ANALYTICAL SERVICES 

## Report of Analytical Results

Lab ID: SE2119-12 Client ID: FB-1 SDG: SE2119 Extracted by: 

### Extraction Method: SW846 5030 Analyst: DJP 

### Analysis Method: SW846 8260B 

### Lab Prep Batch: WG91129 Units: ug/1

CAS# Compound Flags Resul.ts 

### 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-Trichlorabenzene 

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

### u 1 1.0 1 1 1868-53-7 

### Dibromofluoromethane 100% 17060-07-0 

### 1,2-Dichloroethane-D4 102% 2037-26-5 Toluene-DB 

### 104% 460-00-4 

### P-Bromofluorobenzene 102% 

### Page 01 

### of 01 Dll10.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'CONNER SITE PO No: Sample Date: 04/12/11 

### Received Date: 04/22/11 

### Extraction Date: Analysis Date:**04-~~Y-2011** 

### 08:33 

### Report Date: 05/09/2011 Matrix: WATER 

### % 

### Solids: NA 

## KATAHDIN ANALYTICAL SERVICES Report of Analytical Results

Lab ID: SE2119-13 Client ID: TRIP BLANK 

### SDG' SE2119 Extracted 

### by: 

### Extraction Method: SW846 5030 Analyst: TTC Analysis Method: SW846 8260B Lab Prep Batch: WG91081 Units: ug/1

CAS# Compound FJ.ags Resul.ts 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 99% 17060-07-0 1,2-Dichloroethane-D4 

### 99% 2037-26-5 Toluene-DB 

### 102% 460-00-4 

### P-Bromofluorobenzene 102%
Page 

### 01 of 

### 01 D1087.D Adj .MDL 

### 0.3 0.2 0.3 0.2 0.2 0.4 0.3 0.2

## Katahdin Analytical Services A0000016 Client: Utility Shared Serv Project: O'Connor Site PO No: Sample Date: 04/21/11 

### Received Date: 04/22/11 Extraction Date: 04/26/11 

### Analysis Date: 27-APR-2011 20:08 Report Date: 05/16/2011 Matrix: WATER 

### % 

### Solids: NA

CAS 

### II 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: SE2119-1 Client ID: MW-106A 

### SDG: SE2119 Extracted 

### by: KD 

### Extraction Method: SW846 3510 Analyst: JLP 

### Analysis Method: SW846 8082 Lab Prep Batch: WG90706 Units: ug/L



### Flags Resu2ts DF PQL Adj • PQL Adj • MDL 0 

### 0. 047 1.0 0.50 0.047 0.014 0 

### 0. 047 1.0 0.50 0.047 0.019 0 

### 0. 047 1.0 0.50 0.047 0.0085 0 

### 0. 047 1.0 0.50 0.047 0.017 0 

### 0. 047 1.0 0.50 0.047 0.019 0 

### 0. 047 1.0 0.50 0.047 0.0075 0 

### 0. 047 1.0 0.50 0.047 0.016 77% 98%
Page 

### 01 of 

### 01 7ED706.D

## Katahdin Analytical Services A0000017 Client: Utility Shared Serv Project: O'Connor Site 

### PO No: Sample Date: 04/21/11 Received Date: 04/22/11 

### Extraction Date: 04/26/11 Analysis Date: 27-APR-2011 20:35 

### Report Date: 05/16/2011 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' SE2119-2 Client ID: MW-106B SDG: SE2119 

### Extracted by: KD Extraction Method: SW846 3510 Analyst: JLP 

### Analysis Method: SW846 8082 Lab Prep Batch: WG90706 Units: ug/L

Results DF 

### PQL Adj.PQL 

### 0.048 1.0 0.50 0.048 0.048 1.0 0.50 0.048 0.048 1.0 0.50 0.048 0.048 1.0 0.50 0.048 0.048 1.0 0.50 0.048 0.048 1.0 0.50 0.048 0.048 1.0 0.50 0.048

72% 90%
Page 01 of 01 

### 7ED707 .D Adj .MDL 

### 0.014 0.019 0.0086 0.017 0.019 0.0077 0.016

## Katahdin Analytical Services A0000018 Client: Utility Shared Serv 

### Project: O'Connor Site PO No: Sample Date: 04/21/11 Received Date: 04/22/11 Extraction Date: 04/26/11 Analysis Date: 27-APR-2011 21:01 Report Date: 05/16/2011 

### Matrix: WATER % Solids: NA

CAS 

### !I Compound 12674-11-2 Aroclor-1016 11104-28-2 Aroclor-1221 11141-16-5 Aroclor-123 2 53469-21-9 Aroclor-1242 12672-29-6 Aroclar-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: SE2119-3 Client ID: MW-104B SDG: SE2119 Extracted by: KD Extraction Method: SW846 3510 Analyst: JLP Analysis Method: SW846 8082 Lab Prep Batch: WG90706 Units: ug/L



### Flags Resu2ts 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 0.0086 

### 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 0.0076 

### u 0.048 1.0 0.50 0.048 0.016 84% 75%

Page 01 

### of 01 7ED708 .D

## Katahdin Analytical Services A0000019 Client: Utility Shared Serv Project: O'Connor Site PO No: Sample Date: 04/21/11 

### Received Date: 04/22/11 Extraction Date: 04/26/11 Analysis Date: 27-APR-2011 21:27 

### Report Date: 05/16/2011 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

Fl.ags 

### u u u u u u u Lab IDo SE2119-4 Client ID: MW-507A SDGo SE2119 Extracted by: KD 

### Extraction Method: SW846 3510 Analyst: JLP 

### Analysis Method: SW846 8082 Lab Prep Batch: WG90706 Units: ug/L

Results DF 

### PQL Adj .PQL 

### 0.048 1.0 0.50 0.048 0.048 1.0 0.50 0.048 0.048 1.0 0.50 0.048 0.048 1.0 0.50 0.048 0.048 1.0 0.50 0.048 0.048 1.0 0.50 0.048 0.048 1.0 0.50 0.048 

### 70% 58%
Page 

### 01 of 

### 01 7ED709.D 

### Adj.MDL 

### 0.014 0.019 0.0086 0.017 0.019 0.0077 0.016

## Katahdin Analytical Services A0000020 Client: Utility Shared Serv Project: O'Connor Site PO No: Sample Date: 04/21/11 Received Date: 04/22/11 Extraction Date: 04/26/11 

### Analysis Date: 27-APR-2011 21:53 Report Date: 05/16/2011 Matrix: WATER % 

### Solids: NA

CAS 

### !I 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' SE2119-5 Client ID: MW-508B 

## soo, SE2119 Extracted by: KD Extraction Method: SW846 3510 Analyst: JLP Analysis Method: SW846 8082 Lab Prep Batch: WG90706 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% 84%
Page 01 of 01 7ED710.D

## Katahdin Analytical Services A0000021 Client: Utility Shared Serv Project: O'Connor Site PO No: 

### Sample Date: 04/21/11 Received Date: 04/22/11 Extraction Date: 04/26/11 Analysis Date: 27-APR-2011 22:19 Report Date: 05/16/2011 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: SE2119-6 Client ID: MW-106AD SDG: SE2119 Extracted by: KD 

### Extraction Method: SW846 3510 Analyst: JLP 

### Analysis Method: SW846 8082 Lab Prep Batch: WG90706 Units: ug/L



### Flags Resu1ts 

### 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 75% 92%
Page 01 of 

### 01 7ED711.D

## Katahdin Analytical Services A0000022 Client: Utility Shared Serv Project: O'Connor Site PO No: Sample Date: 04/21/11 Received Date: 04/22/11 Extraction Date: 04/26/11 

### Analysis Date: 27-APR-2011 22:45 Report Date: 05/16/2011 Matrix: WATER % 

### Solids: NA

CASj! 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' SE2119-7 

### Client ID: MW-502 SDG' SE2119 Extracted by: KD Extraction Method: SW846 3510 Analyst: JLP Analysis Method: SW846 8082 Lab Prep Batch: WG90706 Units: ug/L

Results 

### DF PQL Adj.PQL 0.048 1.0 0.50 0.048 0.048 1.0 0.50 0.048 0.048 1.0 0.50 0.048 0.048 1.0 0.50 0.048 0.048 1.0 0.50 0.048 0.048 1.0 0.50 0.048 0.048 1.0 0.50 0.048 65% 79%


### Page 01 

### of 01 7ED712 .0 Adj .MDL 0.014 0.019 0.0086 0.017 0.019 0.0077 0.016

## Katahdin Analytical Services A0000023 Client: Utility Shared Serv Project: O'Connor Site PO No: Sample Date: 04/21/11 Received Date: 04/22/11 Extraction Date: 04/26/11 

### Analysis Date: 27-APR-2011 23:11 Report Date: 05/16/2011 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: SE2119-8 Client ID: OW-201B SDG: SE2119 Extracted by: KD Extraction Method: SW846 3510 Analyst: JLP 

### Analysis Method: SW846 8082 Lab Prep Batch: WG90706 units: ug/L

Flags Resu1ts DF 

### PQL Adj .PQL Adj .MDL 

### u 0.049 1.0 0.50 0.049 0.015 

### u 0.049 1.0 0.50 0.049 0.020 

### u 0.049 1.0 0.50 0.049 0.0088 

### u 0.049 1.0 0.50 0.049 0.018 

### u 0.049 1.0 0.50 0.049 0.020 

### u 0.049 1.0 0.50 0.049 0.0078 

### u 0.049 1.0 0.50 0.049 0.017 77% 87%


### Page 01 of 01 7ED713 .D

## Katahdin Analytical Services A0000024 Client: 

### Utility Shared Serv Project: O'Connor Site PO No: Sample Date: 04/21/11 Received Date: 04/22/11 Extraction Date: 04/26/11 

### Analysis Date: 28-APR-2011 01:47 Report Date: 05/16/2011 

### Matrix: WATER % 

### Solids: NA

CAS# Compound 

### 12674-11-2 

### Aroclor-1016 11104-28-2 Aroclor-1221 11141-16-5 Aroclar-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' SE2119-9 

### Client ID: MW-501 SOG' SE2119 Extracted by: KD Extraction Method: SW846 3510 Analyst: JLP 

### Analysis Method: SW846 8082 Lab Prep Batch: WG90706 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 73% 88%
Page 01 of 01 7ED719.D

## Katahdin Analytical Services A0000025 Client: Utility Shared Serv Project: O'Connor Site PO No: Sample Date: 04/21/11 Received Date: 04/22/11 Extraction Date: 04/26/11 Analysis Date: 28-APR-2011 02:13 Report Date: 05/16/2011 

### 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' SE2119-10 Client ID: MW-503 SDG: SE2119 Extracted by: KD Extraction Method: SW846 3510 Analyst: JLP Analysis Method: SW846 8082 Lab Prep Batch: WG90706 Units: ug/L

Fl.ags Results DF PQL Adj. PQL Adj .MDL

0 0.047 1.0 0.50 0. 047 0.014 0 0. 047 1.0 0.50 0.047 0.019 0 0.047 1.0 0.50 0.047 0.0085 0 0.047 1.0 0.50 0.047 0.017 0 0.047 1.0 0.50 0.047 0.019 0 0.047 1.0 0.50 0.047 0.0075 0 0.047 1.0 0.50 0.047 0.016 74% 85%
Page 01 of 01 7ED720 .D

## Katahdin Analytical Services A0000026 Client: 

### Utility Shared Serv Project: O'Connor Site PO No: Sample Date: 04/21/11 Received Date: 04/22/11 Extraction Date: 04/26/11 

### Analysis Date: 28-APR-2011 02:39 Report Date: 05/16/2011 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' SE2119-11 

### Client ID: EB-1 SDG' SE2119 Extracted by: KD 

### Extraction Method: SW846 3510 Analyst: JLP 

### Analysis Method: SW846 8082 Lab Prep Batch: WG90706 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 78% 79%
Page 01 of 

### 01 7ED72l.D

## Katahdin Analytical Services A0000027 Client: Utility Shared Serv Project: O'Connor Site PO No: Sample Date: 04/21/11 Received Date: 04/22/11 Extraction Date: 04/26/11 

### Analysis Date: 28-APR-2011 03:05 Report Date: 05/16/2011 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' SE2119-12 Client ID: FB-1 SDG: SE2119 Extracted by: KD Extraction Method: SW846 3510 Analyst: JLP Analysis Method: SW846 8082 Lab Prep Batch: WG90706 

### Units: ug/L

Results DF PQL Adj .PQL 0.053 1.0 0.50 0.053 0.053 1.0 0.50 0.053 0.053 1.0 0.50 0.053 0.053 1.0 0.50 0.053 0.053 1.0 0.50 0.053 0.053 1.0 0.50 0.053 0.053 1.0 0.50 D. 053 65% 89%
Page 

### 01 of 01 7ED722 .D Adj.MDL 0.016 0.021 0.0095 0.019 0.021 0.0084 0.018Central Maine Power (222350) August 2011

MOM 2011 Annual Report 

# APPENDIX H: TIME SERIES PLOT-1,4 DICHLOROBENZENECentral Maine Power (222350) H-1 August 2011

MOM 2011 Annual Report



### 0 10 20 30 40 50 60 70 80 90 10011/25/19866/24/19877/15/19916/9/199210/18/19951/26/19965/3/19967/8/19969/24/199612/11/19963/26/19976/12/19979/23/199712/9/19973/26/19986/10/19989/22/199812/2/19983/25/19996/22/19999/14/19993/29/20009/6/20004/24/20019/18/20019/16/20024/15/20034/21/20049/22/20049/9/20059/13/20054/19/20069/28/20069/18/20074/22/20084/23/20094/22/20104/22/2011Concentration(ug/L)



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

Average of graph_value

samp_date site_id

# w oodardcurran.com
COMMITMENT & INTEGRITY DRIVE RESULTS

# ~



# .**~** WOODARD &CURRAN