DRAFT 

SDMS DOCID „„^ ^ 

Snperfwinid Records Center 

SITE: Q'CQr>^5^ 

BREAK: g'.S 

OTHER: 

DRAFT 

2003 RIGGS BROOK 

SEDIMENT MONITORING REPORT 

O'CONNOR COMPANY SUPERFUND SITE 

AUGUSTA, MAINE 

DECEMBER 2003 

i'\ 
I 

TABLE OF CONTENTS 
DRAFT 

2003 RIGGS BROOK SEDIMENT MONITORING REPORT 

TABLE OF CONTENTS 

SECTION TITLE PAGE NO. 

EXECUTIVE SUMMARY 1 

1. INTRODUCTION 4 

2. SEDIMENT/WETLAND SOIL SAMPLING 5 

2.1 General Weather and Stream Conditions 5 

2.2 SedimentAVetland Soil Sample Locations 6 

2.3 SedimentAVetland Soil Sample Collection Methods 11 

2.4 Composition of SedimentAVetland Soils 12 

3.0 SEDIMENTAVETLAND SOIL ANALYTICAL METHODS AND RESULTS 13 

3.1 SedimentAVetland Soil Analytical Methods 13 

3.2 SedimentAVetland Soil Monitoring Results 13 

3.3 SedimentAVetland Soil Quality Control Results 15 

3.3.1 Evaluation of Quality Control Elements 15 

3.3.1.1 Data Completeness 15 

3.3.1.2 Method Blanks 15 

3.3.1.3 Surrogate Recoveries 16 

3.3.1.4 Equipment and Field Blanks 16 

3.3.1.5 Calibration Results 17 

3.3.1.6 Matrix Spike Samples 18 

3.3.1.7 Laboratory Control Samples 18 

3.3.1.8 Field Duplicate Samples 18 

3.3.1.9 Sample Quantification 19 

3.3.2 Summary of Quality Control Sample Results 19 

3.3.3 Evaluation of PARCC Parameters 20 

3.3.3.1 Precision 20 

3.3.3.2 Accuracy 21 

3.3.3.3 Representativeness 21 

3.3.3.4 Completeness 21 

3.3.3.5 Comparability 22 

4. SUMMARY OF 2003 SEDIMENTAVETLAND SOIL ANALYTICAL RESULTS 23 

4.1 Comparison of 2003 SedimentAVetland Soil Analytical Results to Target Level 23 

4.2 Comparison of 2003 SedimentAVetland Soil Analytical Results to Previous SedimentAVetland 

Soil Data 23 

4.3 Mann-Kendall Statistical Trend Test 23 

5. CONCLUSIONS AND RECOMMENDATIONS 26 

WOODARD&CURRAN (211749,01) TOC - i 12/10/2003 

DRAFT SED RPT 2003 
DRAFT 

2003 RIGGS BROOK SEDIMENT MONITORING REPORT 

TABLE OF CONTENTS 

LIST OF FIGURES 

FIGURE TITLE PAGE NO. 

Figure 1: Total PCBs in Riggs Brook SedimentsAVetland Soils-September 2003 8 

Figure 2: Total PCBs in Riggs Brook SedimentsAVetland Soils-Upstream & Downstream 

September 2003 9 

Figure 3: Supplemental Samples, Total PCBs in Riggs Brook Wetland Soils/SedimentsSeptember 2003 ... 10 

LIST OF TABLES 

TABLE TITLE PAGE NO. 

Table 1: Concentrations of PCBs Exceeding the Target Level of 5 mg/kg 2 

Table 2: Monthly Rainfall 1996 - 2003 Augusta, ME 5 

Table 3: 2003 Riggs Brook SedimentAVetland Soil Monitoring Sample Results 14 

Table 4: Comparison of 2003 SedimentAVetland Soil Monitoring Results to Historical 

Results 24 

LIST OF ACRONYMS AND ABBREVIATIONS 

LIST OF REFERENCES 

APPENDICES 

Appendix A 

Appendix B 

Appendix C 

SedimentAVetland Soil Sampling Survey Data 

1987 Remedial Investigation Riggs Brook Sediment and Biota Data 

Mann Kendall Trend Analysis Sediment Sample Results 1996 - 2003 

WOODARD & CURRAN (211749,01) 

DRAFT SED RPT 2003 

TOC - ii 12/10/2003 
I 

EXECUTIVE SUMMARY 
DRAFT 

EXECUTIVE SUMMARY 

In accordance with the Riggs Brook Sediment and Biota Sampling and Analysis Plan (SAP) (W&C, 

1997), sediment sampling at Riggs Brook was completed on September 11, 2003. 

Thirty-six sediment/wetland soil-monitoring samples (excluding quality control samples such as 

duplicates) were collected during the 2003 sampling event. Samples were collected at all of the original 

twenty-four locations proposed in the SAP (8001 to 8023), and at locations 8039 and 3018, which were 

added to the program in 1998. 

In conjunction with a supplemental sampling grid that was sampled in 2000, ten additional sediment 

samples were collected in an area between the former Source Control Area of the O'Connor Company 

Superfund Site (the Site) and Riggs Brook. Samples 9B000, 9C000, 9C025, 9C050, 9C075, 9C100 and 

9C125 were sampled in 2000. Locations 9A925, 9B925 and 9C925, east of the former 2000 

supplemental grid, were added in 2001 and were again-sampled this year. The purpose of collecting 

these samples was to confirm detections of target PCB Arochlors reported for locations on the 

supplemental grid in 2000 and to establish if there are any trends with respect to sediment sample 

concentrations of PCBs through time. 

Sediment samples were collected using a 4-foot long, 1.5-inch diameter acetate macrocore liner at 

submerged locations. At dry locations, a core-sampling device was manually pushed approximately six 

inches into the ground to collect wetland soils. The sediments and wetland soils collected in 2003 

primarily consisted of clay covered by a layer of silt. The top portion of wetland soil samples often 

contained roots and grass. The soil was shaken from the roots and included in the sample. However, the 

roots and grass were discarded and were not included as part of the sample matrix. Sediment and 

wetland soil samples were thoroughly homogenized in stainless steel bowls prior to placement into 

sample jars. 

PCB concentrations for all sediment/soil samples collected during the 2003 program were compared 

against a target level of 5 mg/kg, and all of the thirty-six samples had total PCBs concentrations below 

this target level. The average concentration of total PCBs for the thirty-six samples (using detection limit 

values for non detect samples) was 0.43 mg/kg. Total PCBs ranged from non-detect to 4.4 mg/kg. 

WOODARD & CURRAN (211749,01) Page 1 12/10/2003 

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The 2003-sediment/wetland soil results were compared against historical results, 1987 and 1996 through 

2002, with the following observations. Concentrations of total PCBs at sample points upstream of the 

Site have been below detection limits every year in which samples have been collected and analyzed. 

For the area of Riggs Brook adjacent to the Site, PCBs have not detected above the target level of 5 

mg/kg at any sample locations in 1987, 1996 and 2003. From 1997 to 2002, there were sporadic 

exceedances of the target level at one or two locations per year, as shown in Table 1 below. 

TABLE 1: CONCENTRATIONS OF PCBs EXCEEDING THE TARGET LEVEL OF 5 MG/KG 

^.evf 

8004 

8013 

3018 

8006 

iiPfe)^ 

29 

5.7 J 

:(ing/kg)-; 

:-11999 . 

IfcB^--

6.4 

15.9 14 

.j.2000 

PCBs 

(mg/kg) 

10.4 

ZOOlv'l 

PGB^;c 

(mg/kg) 

6.1 

'r,2002'".: 

:5ROBs-'-' 

•#''i2003 •*<! 

5.63 J 

Notes: 

Indicates that the concentration of PCBs was below the target level of 5 mg/kg 

CfUf^CM—i 

At the request of the USEPA, fifty-one sediment sample points, located along a grid between the Site and 

Riggs Brook, were added to the sediment-sampling program in 2000. All samples collected at points 

from this grid had concentrations of total PCBs below the target level of 5 mg/kg except 9B000, 9C050, 

9C075 and 9C125. Each of these points, plus several others that had not exceeded the target level, were 

re-sampled in 2001. Three additional points, 9A925, 9B925 and 9C925, were also sampled in 2001. The 

same 10 locations on the supplemental grid that were sampled in 2001 and 2002 were re-sampled •iQr''^ 

2003. PCBs were detected at all the 10 locations and concentrations ranged from 0.21 mg/kg at 9B925 to 

2.1 mg/kg at 9B000. Results for other 2003 samples were similar to concentrations reported previously. 

As in 2001 and 2002, in 2003, none of the samples collected at these 10 additional locations exceeded the 

target level. 

Downstream of the Site at sample locations 8018 through 8023, concentrations of total PCBs have been 

below the 5-mg/kg-target level each year. In 2003, concentrations of PCBs at all downstream sample 

locations were non-detect. 

WOODARD & CURRAN (211749,01) 

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Page 2 12/10/2003 
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In accordance with the SAP, a Mann-Kendall statistical trend analysis was used to determine if 

concentrations of total PCBs in sediment samples collected between 1996 and 2003 indicate a trend. The 

results from this test do not indicate any significant trends relative to increases or decreases in PCB 

concentrations at any of the sampling locations with four or more years of data. 

WOODARD&CURRAN (211749,01) Page 3 12/10/2003 

DRAFT SED RPT 2003 
SECTION 1 
DRAFT 

1. INTRODUCTION-^ 

This document constitutes the 2003 Riggs Brook Sediment Monitoring Report (Report) for the O'Connor 

Company Superfund Site (the Site) in Augusta, Maine. In April 1996, the U.S. Environmental Protection 

Agency (USEPA) designated Riggs Brook as Operable Unit 3 (OU-3) of the Site. This Report has been 

prepared by Woodard & Curran Inc. (W&C), the Supervising Contractor, on behalf of Central Maine 

Power (CMP), the Settling Defendant in accordance with the Consent Decree in United States of 

America v. Central Maine Power, Civil No. 900302B, entered on September 3, 1991, and the Explanation 

of Significant Differences (ESD), approved and issued by the USEPA on July 11, 1994. 

This Report presents the analytical results of the 2003 sediment sampling activities completed at OU-3 

and provides a comparison to sediment data collected from 1996 through 2003 and to the sediment data 

generated as a part of the Remedial Investigation Report for the Site, Volume I (RI) completed by E.C. 

Jordan in 1987. The 2003 sediment-sampling event was conducted in accordance with the Riggs Brook 

Sediment and Biota Sampling and Analysis Plan (SAP), (W&C, 1997). The 2003 sampling event 

represented the eighth annual sediment-sampling event since remedial action was initiated at the 

O'Connor Site in 1996. 

The data quality objective (DQO) for each sediment-sampling event is to determine if PCB 

concentrations are below 5 ppm at all sampling locations. In accordance with the SAP, the analytical 

results from each sampling event will be used to evaluate whether additional sampling is necessary and if 

further remedial action within Riggs Brook is necessary to reduce the potential risk to human health and 

the environment. 

Section 2 of this report describes general weather and stream conditions during sampling collection, 

sediment sample locations, sample collection methods, and a description of the soil types for the 

sediment samples. Section 3 summarizes analytical results, including associated quality control results 

for the sediment/wetland soil samples. Section 4 presents a comparison of 2003 sediment/wetland soil 

PCB concentrations to the target level, and to previously collected data. Also included in Section 4 are 

the results of the Mann-Kendall statistical trend analysis. Section 5 provides conclusions of the 2003 

sampling event and recommendations for future actions. 

WOODARD&CURRAN (211749,01) Page 4 12/10/2003 

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SECTION 2 
DRAFT 

SEDIMENT/WETLAND SOIL SAMPLING V-££, r^(t/ - ^.jo ^^Lit-^-y-' s--'!rv^ tJ 

This section describes the general stream and weather conditions, the sediment/wetland soil sampling 

locations, the collection methods and general sediment composition. 

2.1 GENERAL V^^EATHER AND STREAM CONDITIONS 

Thirty-six sediment/wetland soil samples were collected in Riggs Brook on September 11, 2003. The 

weather conditions during sample collection were sunny with temperatures around 75 degrees 

Fahrenheit. According to the National Weather Service, rainfall for the Augusta area was well below 

normal for June and July 2003. August rainfall was slightly above normal. Although a rainstorm during 

the week prior to the sampling event dropped approximately 1.3 inches on the area, most of the rainfall in 

September fell after the sampling event had occurred. Due to the fact that the rainfall during most of the 

summer was below normal, the portions of Riggs Brook upstream and adjacent to the Site were very dry. 

Water levels at the confluence of the East and West Branches of Riggs Brook and points downstream 

were also low. Beaver dams, which had created large dammed up pools in previous years, were not as 

plentiful in 2003. Table 2 shows monthly rainfall in inches for the three months prior to sampling each 

year, and the rainfall during the month of September. 

tYear 

1996 

1997 

1998 

1999 

2000 

2001 

2002 

2003 

TABLE 2: 

, "'Ijune'. ". "'-' 

3.34 

3.64 

10.32 

1.11 

1.79 

4.09 

3.81 

1.51 

MONTHLY RAINFALL 1996 - 2003 AUGUSTA, ME 

.;' , ^Erecipi'tation (Inches)^'^'.?^^"'' . -; yj^^^ui^^:, *' 

'^.ilt'S^^Month ' V a^ : ' ' " : '4^i^¥^:^^''ik, 

,J.--*JujyV^'V''*".,-'-

8.67 

3.55 

1.3 

1.54 

6.33 

2.12 

2.02 

1.67 

"'' ""'August'"''' 

1.02 

3.15 

1.51 

2.24 

1.67 

0.32 

1.2 

4.00 

„se&tr^^r>'/ 

7.53 

3.25 

1.6 

11.29 

1.64 

3.98 

3.28 

6.21 

WOODARD & CURRAN (211749,01) 

DRAFT SED RPT 2003 

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2.2 SEDIMENT/WETLAND SOIL SAMPLE LOCATIONS 

The thirty-six sediment/wetland soil sample locations are illustrated in Figures 1, 2 and 3. Sample 

locations were relocated using a digital geographical positioning system (DGPS). Survey data collected 

for the sample locations is presented in Appendix A. Sample collection began downstream at sediment 

sample location 8023 and progressed to the furthest upstream location at 8002B. As defined in the SAP, 

sediment samples were collected at submerged locations, while wetland soil samples were collected at 

non-submerged locations. 

Downstream of the Site, six sediment samples were collected at intervals of approximately 1200 feet 

from locations 8023 to 8018. The furthest downstream sediment sample location, 8023, is just upstream 

from where Route 105 crosses Riggs Brook (see Figures 1 and 2). 

Fifteen sediment/wetland soil samples were collected on an approximate 100-foot grid in an area of 

Riggs Brook adjacent to the Site. Sample locations within this area include 8003 through 8017. Wetland 

soil samples continue to be collected at sample locations 3018 and 8039 also adjacent to the Site. 

Initially, these locations were mistakenly sampled in 1998. Both locations have been included in the 

Riggs Brook Sediment Sampling Program every year since 1998. 

In conjunction with a supplemental sampling grid that was sampled in 2000, ten additional sediment 

samples were collected in an area between the Site and Riggs Brook. Sample locations 9B000, 9C000, 

9C025, 9C050, 9C075, 9C100 and 9C125 were sampled in 2000. Locations 9A925, 9B925 and 9C925, 

located east of the 2000 supplemental grid were added in 2001. The purpose of collecting these samples 

was to monitor detections of target PCB Arochlors reported for the grid locations in 2000. 

Many sample locations adjacent to the Site that were covered with water during previous sampling 

episodes were not submerged because of the lack of precipitation during the summer. 

Three sediment/wetland soil samples were collected as background samples upstream of Route 17 and 

the Site. In accordance.with the SAP, sediment/wetland soil samples were collected at sample location 

8001 approximately 200 feet upstream of Route 17, and at sample location 8002A approximately 300 

feet upstream of Route 17 within a dense stand of alder trees. In addition, a third sediment sample, 

8002B, was collected approximately 2100 feet upstream of Route 17, upstream of an abandoned railroad 

trestle. 

WOODARD&CURRAN (211749.01) Page 6 12/10/2003 

DRAFT SED RPT 2003 
o 

9^,; 

oo 

a% o 

o 

O 

Ol O o ^o 

Or) Ii ^ 

' \ 

/ / 

UPLAND 

ii MARSH 

I I 

8002A AND 8002B 

UPSTREAM APPROX. 

300 FT. AND 2100 FT.| 

SW OF RT. 17 

SEE FIGURE ^ ^ 

o. 

M 

RESTORED UPPER LAGOON 

•^( ^ 

8001.2003 

<0.032 ppm 

li 

8003.2003 

<0.031 ppm 

Iiii 

3018.2003 

4.4 J ppm 

RESTORED LOWER LAGOON 

f)o Q 

8004.2003 

<0.024 J ppm 

8007.2003.51, 

0.73 ppm 

8007.2003 

0.77 ppm 

8009.2003 

0.20 ppm 

o 

8011.2003 

<0.029 ppm 

8005.2003 

<0.027 ppm 

8006.2003.51 

0.93 ppm 

ii li Oi 

8012.2003 

0.11 ppm 

8006.2003 

0.95 ppm 

8008.2003 

0.035 ppm 

LEGEND 

o 

© 

TREE LINE 

BRUSH 

MARSH 

EDGE OF BROOK 

EDGE OF PAVED ROAD 

GRAVEL ROAD 

TREE 

EXISTING BUILDING 

POWER LINE 

SEDIMENT SAMPLE LOCATION 

= PARTS PER MILLION OR MG/KG 

8019.2003 

<0.044 ppm 

3500 FT. TO 

RT. 105 

8017.2003 

<0.034 pp 

A\ 

il 1 V 

Ax V 

^r^ ^ 

o 

8010.2003 

0.024 ppm 

8013.2003 

<0.023 ppm 

•p^-T 

8014.2003 

0.17 ppm 

\ 

8015.2003 

<0.024 ppm 

N 8016.2003 

0.031 ppm 

- ^ 

7-^ SpAcit^ 

THREE ADDITIONAL SEDIMENT SAMPLES 

(8021, 8022 & 8023) WERE TAKEN 

DOWNSTREAM AT DISTANCES OF 

APPROXIMATELY 1200' BETWEEN EACH 

SAMPLE (SEE FIGURE 2) 

-CONFLUENCE OF EAST AND 

WEST BRANCHES OF RIGGS 

BROOK 

NOTES 

• BOUNDARIES OF RESTORED LAGOONS 

ESTIMATED (1/98) BASED ON WETLAND . 

RESTORATION PLAN (DRAWING C-12, 100% 

DESIGN, JULY 1996), AND NEW WETLAND, 

FINAL TOPOGRAPHY (APPENDIX D DRAFT 

SCRA REPORT, DECEMBER 1997). r' 

DES.BY: LEM DR.BY: JBC CK.BY: RDD 

O'CONNOR COMPANY SUPERFUND SITE 

2003 RIGGS BROOK SEDIMENT 

MONITORING REPORT 

FIGURE 1 

TOTAL PCBs IN RIGGS BROOK 

SEDIMENTS/WETLAND SOILSSEPTEMBER 2003 

SCALE: 1=20 0 

DATE: DECEMBER 2003 

JOB NO.: 211749.01 

21174901-H001-MR 

WOODARD&CURRAN 

Engineering • Science • Operations 
2000 

feet 

scale 

2000 4000 

SITE MAP COMPILED FROM U,S,G,S, 

TOPOGRAPHIC QUADRANGLES FOR 

TOGUS POND, MAINE, PHOTOINSPECTED 

1982, AND AUGUSTA, MAINE PHOTOINSPECTED 1980. 

DES.BY: LEM DR,BY: JBC CK,BY: RDD 

O'CONNOR COMPANY SUPERFUND SITE 

2003 RIGGS BROOK SEDIMENT MONITORING 

REPORT 

FIGURE 2 

TOTAL PCBs IN RIGGS BROOK 

SEDIMENTS/WETLAND SOILS 

UPSTREAM AND DOWNSTREAM OF SITE 

SEPTEMBER 2003 

SCALE: 1"=20G0' 

DATE: DECEMBER 2003 

JOB NO.: 211749.01 

SHEET: 21174901-H002-MR 

VVOOCARD& CURRAN 

Engineering • Science • Operations 
s0f~ 

MARSH GRASS 

> ^ > 

«V 

PROPERTY LINE &-

SUPERFUND SITE 

BOUNDARY 

ARCH CULVERT 

12'WIDE AT BASE 

INV, EL, 174,86' 

^^> ^ 

14 

f ^ J^^rv^ C'>-^i 

lyffO O 

LEGEND 

9C025 

-1-0.49 

TOP VALUE IS THE SAMPLE LOCATION. 

BOnOM VALUE IS THE CONCENTRATION OF 

PCBs IN PPM OR mg/kg. 

FORMER AREA 3 OF THE SITE 

FORMER AREA 2 OF THE SITE 

40 

scale 

40 80 

feet 

DES.BY: LEM | DR.BY: JBC j CK.BY: RDD 

0 CONNOR COMPANY SUPERFUND SITE 

2003 RIGGS BROOK SEDIMENT 

MONITORING REPORT 

FIGURE 3 

SUPPLEMENTAL SAMPLES 

TOTAL PCBs IN RIGGS BROOK 

WETLAND SOILS/SEDIMENTS 

SEPTEMBER 2003 

SCALE: 1''=40' 

DATE: DECEMBER 2003 

JOB NO.: 211749.01 

21174901-H003-MR 

WOODARD&CURRAN 

Engineering • Science • Operations 
DRAFT 

2.3 SEDIMENTAVETLAND SOIL SAMPLE COLLECTION METHODS 

The sample collection method used at each sample location is discussed in this subsection. 

At submerged sample locations, sediment samples were collected using 1.5-inch diameter acetate (or 

similar material) macrocore liners. The acetate liner was manually pushed into the sediments to a depth 

of up to six inches. Once the liner was pushed to maximum penetration, the end of the liner that was not 

in the sediments was covered with a gloved hand to prevent the loss of the sample, and the liner was 

withdrawn from the bottom of the brook. Surface water was drained off, and the contents of the liner 

were emptied into a stainless steel bowl and homogenized. The homogenized sediments were then 

transferred into a sample jar. 

At non-submerged sample locations, wetland soil samples collected from 2001 to 2003 were obtained 

using a core sampler that was manually pushed into the ground. The core sampler contained a liner that 

filled with soils as the device was advanced into the ground. Wetland soil samples were collected from 

the surface to approximately six inches below ground surface (bgs). Samples were transferred to a 

stainless steel bowl from the liner of the core sampler. The top portion of the wetland soil sample core 

generally consisted of grass and roots. The roots were shaken to remove any soil trapped within them 

and added to the soil from the remainder of the core. The roots and grass were discarded and were not 

included as part of the sample. The wetland soil sample was then homogenized and transferred to the 

sample jar using a stainless steel spoon. From 1996 to 2000 wetland soil samples were collected using 

stainless steel spoons. Sediment/wetland soil samples consisted of discrete samples, collected at a depth 

of 0 to 6 inches below the ground or sediment surface. 

Stainless steel bowls and spoons were decontaminated between sample locations in accordance with the 

SAP. Acetate macrocore and core sampler liners were disposed of after each sample was collected. 

WOODARD&CURRAN (211749.01) Page 11 12/10/2003 

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2.4 COMPOSITION OF SEDIMENTAVETLAND SOILS 

The majority of the sediment/wetland soil samples collected during the 2003 sampling effort consisted of 

silt and/or clay often overlain by several inches of organics. A small number of samples also had sand 

mixed in with the silt and/or clay. The percent solids content of the sediment/wetland soil samples 

ranged from 45 percent at 8019 to 87 percent at 8013. 

WOODARD&CURRAN (211749,01) Page 12 12/10/2003 

DRAFT SED RPT 2003 
SECTION 3 
DRAFT 

/ 3 ^ rUV'^ A * 

3.0 SEDIMENTAVETLAND SOIL ANALYTICAL METHODS AND RESULTS ''^'"'^. ^ 

This section describes sediment/wetland soil analytical methods, and summarizes the analytical results. 

3.1 SEDIMENTAVETLAND SOIL ANALYTICAL METHODS 

All sediment/wetland soil samples were analyzed for PCBs using USEPA Method 8082 at Severn Trent 

Laboratories in Buffalo, New York. Laboratory analytical levels were consistent with USEPA Level IV 

requirements. Sample analysis for PCBs included the following Arochlors: Arochlor 1016, 1221, 1232, 

1242, 1248 1254 and 1260. 

The calibration levels used for Arochlors 1016 and 1260 were 0.025, 0.05, 0.10, 0.25, 0.50, 1.0, and 2.5 

ppm. A single point calibration standard was used for all other Arochlors. Most samples had PCB 

concentrations that were either non-detect or were within the calibration range used for the associated 

instrumentation. However, dilutions were performed for 3018.2003 (twenty-fold dilution), 9B000.2003 

(ten-fold dilution), and 9C075.2003 (ten-fold dilution) to bring sample concentrations within the 

calibration range. 

3.2 SEDIMENTAVETLAND SOIL MONITORING RESULTS 

The analytical results obtained from the September 11, 2003 sampling effort are summarized in Table 3 

and Figures 1 through 3. 

The concentrations of total PCBs for all thirty six sample locations were below the action level of 5 

mg/kg. PCBs were not detected in samples collected at any of the upstream sediment sample locations 

(8001, 8002A, 8002B). The concentrations of total PCBs in all of the sample locations adjacent to the 

Site (8003 to 8017, supplemental grid sample locations and 3018, 8039) ranged from < 0.023 to 4.4 

mg/kg. PCBs were not detected in 8 of the 27 samples collected from this area. PCBs were not detected 

at any of the downstream locations (8018 - 8023). 

WOODARD&CURRAN (211749.01) Page 13 12/10/2003 

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TABLE 3: 2003 RIGGS BROOK SEDIMENT/WETLAND SOIL MONITORING SAMPLE RESULTS 

^ " .. Sample'ID';vVr<" 

3018.2003 

8001.2003 

8002A.2003 

8002B.2003/8002B.2003.52 

8003.2003 

8004.2003 

8005.2003 

8006.2003/8006.2003.51 

8007.2003/8007.2003.52 

8008.2003 

8009.2003 

8010.2003 

8011.2003 

8012.2003 

8013.2003 

8039.2003 

8014.2003 

8015.2003 

8016.2003 

8017.2003 

8018.2003 

8019.2003 

8020.2003 

8021.2003/8021.2003.51 

8022.2003 

8023.2003 

9A925.2003 

9B925.2003 

9B000.2003 

9C925.2003 

9C000.2003 

9C025.2003 

9C050.2003 

9C075.2003 

9C100.2003 

9C125.2003 

Total PCB Concentration 

'(mg/kg)'^^,'.'?^:^,. 

4.4 J 

<0.032 

<0.039 

<0.037<0.035 

<0.031 

<0.024 J 

<0.027 

0.95/0.93 

0.77/0.73 

0.035 

0.20 

<0.024 

<0.029 

0.11 

<0.023 

0.088 

0.17 

<0.024 

0.031 

<0.034 

<0.048 

<0.044 

<0.032 J 

<0.039/<0.039 

<0.038 

<0.03 

0.67 

0.21 

2.1 

0.77 

0.60 

0.49 

0.35 

0.78 

1.1 

1.0 

Sample Location'- . ^ 

.^ I ^ " ' 

Adjacent to O'Connor Site 

Upstream of O'Connor Site 

Upstream of O'Connor Site 

Upstream of O'Connor Site 

Adjacent to O'Connor Site 

Adjacent to O'Connor Site 

Adjacent to O'Connor Site 

Adjacent to O'Connor Site 

Adjacent to O'Connor Site 

Adjacent to O'Connor Site 

Adjacent to O'Cormor Site 

Adjacent to O'Connor Site 

Adjacent to O'Connor Site 

Adjacent to O'Connor Site 

Adjacent to O'Connor Site 

Adjacent to O'Connor Site 

Adjacent to O'Connor Site 

Adjacent to O'Connor Site 

Adjacent to O'Connor Site 

Adjacent to O'Connor Site 

Downstream of O'Connor Site 1 

Downstream of O'Connor Site 

Downstream of O'Connor Site 

Downstream of O'Connor Site 

Downstream of O'Connor Site 

Downstream of O'Connor Site 

Adjacent to O'Connor Site 

Adjacent to O'Connor Site 

Adjacent to O'Connor Site 

Adjacent to O'Connor Site 

Adjacent to O'Connor Site 1 

Adjacent to O'Connor Site 

Adjacent to O'Connor Site 

Adjacent to O'Connor Site 

Adjacent to O'Connor Site 

Adjacent to O'Connor Site 

Notes: 

Duplicate samples are identified with .51 suffix. 

J Qualifier indicates the sample concentration is estimated. 

WOODARD & CURRAN (211749,01) 

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Page 14 12/10/2003 
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3.3 SEDIMENT/WETLAND SOIL QUALITY CONTROL RESULTS 

The concentrations of PCBs obtained during the 2003 Riggs Brook Sediment/Wetland Soil sampling at 

Riggs Brook were validated to determine the quality and usability of the data. A USEPA Tier IE data 

validation procedure was used. The Tier EI validation includes a completeness check, a review of all 

quality control results as well as a review of all raw data. References used to complete the validation 

process include the USEPA Region 1 Functional Guidelines for Evaluating Organic Analyses (USEPA, 

modified 1988), the SCRA QAPP (W&C, 1996) and the Riggs Brook SAP (W&C, 1997). Validation 

results and data quality assessments were based on the performance demonstrated in the analyses of 

quality control samples. Sample qualifiers and flags were applied based on these results. This section 

includes an evaluation of quality control elements, a summary of quality control sample results, and an 

evaluation of precision, accuracy, representativeness, completeness and comparability (PARCC). 

3.3.1 EVALUATION OF QUALITY CONTROL ELEMENTS 

Quality control elements which were included in the Tier HI validation and data assessment include data 

completeness, holding times, method blanks, surrogate recoveries, equipment and field blanks, 

calibration results, matrix spikes, laboratory control samples and duplicate samples. 

3.3.1.1 DATA COMPLETENESS 

The data package from Severn Trent Laboratories, Inc., Buffalo, NY, was reviewed to ensure that all 

sample and associated quality assurance results were available. Samples collected in association with the 

2003 sediment/wetland soil sampling effort were analyzed in sample delivery group (SDG) A03-8758. 

Results of the completeness review indicate that all collected samples were analyzed and that all quality 

control results were available to complete data validation procedures. Data validation results were used 

to assess the overall quality of reported PCB concentrations. 

3.3.1.2 METHOD BLANKS 

Method blanks were analyzed to determine if concentrations of PCBs were introduced at the laboratory 

during the preparation and analysis of the samples. Method blanks consisted of analyte free soil, which 

was extracted and processed in an identical manner to the sediment/wetland soil samples. There were no 

detections of PCBs in any of the method blanks associated with sediment/wetland soil samples collected 

WOODARD&CURRAN (211749,01) Page 15 12/10/2003 

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DRAFT 

during the 2003 sampling event, indicating that laboratory contamination of PCBs into sediment samples 

did not likely occur. 

3.3.1.3 SURROGATE RECOVERIES 

Two surrogates, decachlorobiphenyl (DCB) and tetrachlorometaxylene (TCMX), were added to each 

sample prior to extraction to ensure that the instrumentation used to obtain PCB concentrations was 

responsive and functioning correctly. A known concentration of each surrogate was added to each 

sample prior to sample extraction and analysis. The reported concentration of each surrogate was 

divided by the known concentration to obtain a percent recovery. The percent recoveries obtained from 

the sample analyses were compared to advisory limits established for USEPA Method 8082. The 

USEPA advisory limits for the surrogate recoveries were statistically derived at the analytical laboratory. 

The advisory limit for acceptable DCB recoveries was 36-153%. For TCMX, the advisory limits were 

32-148%. The recoveries of both surrogates were within the advisory limits for all samples analyzed 

without significant dilutions. Surrogate recoveries were diluted out, and therefore not evaluated, for the 

following samples that required dilutions at the instrument: 3018.2(X)3 (twenty-fold dilution), 

9B00O.2003 (ten-fold dilution), and 9C075.2003 (ten-fold dilution). Overall, the surrogate recovery data 

indicate that the analytical instrumentation was functioning properly. 

3.3.1.4 EQUIPMENT AND FIELD BLANKS 

One equipment blank, EB-100.03, was collected and analyzed in association with sediment sampling 

activities to measure the effectiveness of decontamination procedures in the removal of target 

compounds. Distilled water was poured into a decontaminated stainless steel bowl and spoon that were 

used in the homogenization of the sediment samples. The distilled water was poured from the bowls into 

sample containers. There were no PCBs detected in the equipment blank indicating that decontamination 

procedures were effective in the removal of potential contamination. 

One field blank (FB. 100.03) was collected and analyzed to determine PCB concentrations in the source 

water used for decontamination of the sediment sampling equipment. Data from the field blank analysis 

were used to examine the potential for contamination of the sampling equipment, and ultimately of the 

sediment samples, from the source water. The source water used as a final rinse to decontaminate the 

sediment sampling equipment was commercially purchased distilled water. No PCBs were detected in 

WOODARD&CURRAN (211749,01) Page 16 12/10/2003 

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DRAFT 

the field blank indicating that the source water was not likely a potential contamination source for 

sediment samples. 

3.3.1.5 CALIBRATION RESULTS 

Calibration results were reviewed to determine if sample results were accurately quantified. Two types 

of calibrations were included in the review; initial calibrations and continuing calibrations. 

Initial calibrations were evaluated based on instrument response to different concentrations of standards 

of the target Arochlors. Instrument responses were plotted against the concentrations of seven standards 

to obtain a calibration curve against which all sample concentrations were obtained. The concentrations 

of the standards used to create the calibration curves for Arochlor 1016 and Arochlor 1260 were 0.025, 

0.05, 0.10, 0.25, 0.50, 1.0, and 2.5 ppm. The correlation coefficient provided a measure of the linearity 

of the calibration curve. The initial calibration requkement specified in the SCRA QAPP was for the 

correlation coefficient to be 0.99 or better. 

Initial calibrations for Arochlor 1016 and Arochlor 1260 were created on August 28, 2(X)3 for the A and 

B channels of the gas chromatograph. Single point initial calibrations were utilized for quantification of 

Arochlors 1221, 1232, 1242, 1248, and 1254. All single point initial calibrations were analyzed on 

August 31, 2003, for both channels of the gas chromatograph. Initial calibration results were acceptable 

for all Arochlor peaks on both channels indicating that sample concentrations were accurately quantified. 

Continuing calibration results were analyzed to provide a check of the accuracy of the analytical 

instrumentation. Continuing calibration results were assessed by comparing reported concentrations 

against true concentrations of a standard. The SCRA QAPP requirement for acceptance of continuing 

calibration results was a percent difference of 15% or less between the reported concentration and the 

true concentration. 

Continuing calibration standards were analyzed on September 17, September 19, September 20, and 

September 21, 2003. All continuing calibration results associated with the 2003 sediment sample 

analyses were within control limits indicating accurate sample quantification for all analytes.. 

WOODARD&CURRAN (211749,01) Page 17 12/10/2003 

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DRAFT 

3.3.1.6 MATRIX SPIKE SAMPLES 

Matrix spike and matrix spike duplicate (MS/MSD) samples were used to determine if matrix 

interferences affected the recovery of PCB concentrations in samples. For example, certain types of soil 

such as peat absorb molecules of organic compounds such as PCBs very tightly such that it is very 

difficult to extract the organic compounds into the solvent from the soil. For matrix spike analyses, 

known concentrations of Arochlor 1254 were added to sediment samples before extraction and analysis. 

The concentrations of the Arochlor obtained from the analyses were divided by the known concentrations 

to obtain percent recoveries. The criteria used in the determination of matrix effects are obtained from 

performance data generated from the analysis of quality control samples. For Arochlor 1254, the 

acceptance range for matrix spike recoveries was 52-153%. During the 2003 sediment-sampling event, 

matrix spike samples were collected at 8007.2003 and 8002B.2003. The MS/MSD samples were 

designated with a .52 as a part of the sample identification to differentiate them from the original 

samples. However, the laboratory did not realize that the .52 designations indicated a request for 

MS/MSD analyses and arbitrarily selected samples for MS/MSD analyses. The laboratory selected 

8002A.2003 and 8019.2003 for MS/MSD analyses. MS/MSD recoveries of Arochlor 1254 were within 

the acceptance range for both sets of MS/MSD analyses. 

3.3.1.7 LABORATORY CONTROL SAMPLES 

Laboratory control samples were used to determine the accuracy of the analytical method used to obtain 

sample concentrations. Laboratory control samples consist of analyte-free soil to which known 

concentrations of Arochlor 1254 were added. The reported concentrations were divided by the known 

concentrations to obtain percent recoveries. Laboratory control sample recoveries were compared to 

statistically derived acceptance limits. The acceptance limits were 52-153% for Arochlor 1254 in the 

LCS analysis. 

All laboratory control sample recoveries were compliant indicating that the analytical accuracy 

demonstrated during sample analysis was acceptable. 

3.3.1.8 FIELD DUPLICATE SAMPLES 

Duplicate samples are two different samples collected from an identical location. The purpose of 

collecting duplicate samples was to measure the precision of the reported PCB concentrations. Precision 

WOODARD&CURRAN (211749.01) Page 18 12/10/2003 

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DRAFT 

is expressed in terms of relative percent difference (RPD). The RPD was calculated by taking the 

difference between the sample and its duplicate and dividing it by the average of these results. 

Evaluation of the RPD was used to determine if there was variability in sample collection and analysis 

and to determine whether the concentrations of the target compounds were homogeneously distributed 

throughout the sample matrix. Duplicate concentrations were considered to be in agreement (compare 

well) if the RPD between PCB concentrations was less than 50% (USEPA, 1988). Duplicate 

sediment/wetland soil samples were designated with a .51 suffix as part of the sample identification to 

differentiate them from other sediment samples. 

Duplicate samples were collected at 8006.2003 and 8021.2003 during the 2003 Riggs Brook 

sediment/wetland soil-sampling event. Also evaluated were the samples originally designated (.52 

extensions) for MS/MSD analyses: 8007.2003 and 8002B.2003. The RPDs between the concentrations 

of target Arochlors for the duplicates (.51 or .52 extensions) and corresponding samples were below 50% 

for 8006.2003, 8021.2003, 8007.2003, and 8002B.2003. The duplicate data suggest that an acceptable 

level of precision was achieved during sample collection and analysis. 

3.3.1.9 SAMPLE QUANTIFICATION 

Positive concentrations of Arochlors were confirmed by analysis on two dissimilar gas chromatographic 

columns. Results from Channel A and Channel B were compared to evaluate the precision between the 

two columns. The relative percent difference (RPD) between results was calculated for each positive 

Arochlor detection, and reported concentrations for which the %D between columns was greater than 

25% have been qualified as estimated (J). Based on %Ds greater than 25%, the following sample results 

for Arochlor 1248 have been qualified as estimated (J): 3018.2003, 8004.2003, and 8020.2003. For 

these samples the higher of the two results has been reported and qualified (J). 

3.3.2 SUMMARY OF QUALITY CONTROL SAMPLE RESULTS 

A Tier EQ validation review was completed for all sediment/wetland soil samples collected from Riggs 

Brook in 2003. A review of all results and quality control elements indicated that the data package was 

one hundred percent complete for the sediment/wetland soil samples collected and all associated quality 

control results. All of the blanks (method, equipment, and field) were non-detect for PCBs indicating 

that contamination of samples from outside sources did not likely occur. Surrogate compound recoveries 

were within acceptance limits for all samples suggesting that overall, the analytical system was in 

WOODARD&CURRAN (211749,01) Page 19 12/10/2003 

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DRAFT 

control. Recoveries of laboratory control samples bracketing the sediment samples were in control for 

Arochlor 1254 indicating that sample concentrations were accurately reported. Two samples, 

8002A.2003 and 8019.2003, were analyzed for matrix effects using matrix spikes of Arochlor 1254. 

Matrix spike results for both samples were acceptable. 

All initial calibrations were in criteria indicating that satisfactory calibration curves from which accurate 

sample concentrations could be obtained were generated. All continuing calibration results were within 

control limits indicating that accurate quantifications for all Arochlors could be achieved. Duplicate 

samples were collected at 8006.2003 and 8021.2003. In addition, duplicate sample results were 

evaluated for 8007.2003/8007.2003.52 and 8002B.2003/8002B.2003.52. The results for all four 

duplicate pairs were compliant indicating that the level of precision was acceptable. 

3.3.3 EVALUATION OF PARCC PARAMETERS 

Quality control results obtained during the 2003 Riggs Brook Sediment/Wetland Soil Sampling event 

were also reviewed to determine if PARCC objectives were met, as outlined in the SAP. Components 

used to complete the PARCC assessment were obtained from the Tier HI validation review. PARCC 

results are summarized below. 

3.3.3.1 PRECISION 

Precision was expressed in terms of RPD between samples and associated duplicates, and between MS 

and MSD results. The precision requirement specified in the SAP for the RPD between both pairs of 

these quality control samples is 50% or less. 

Duplicate samples were collected at 8006.2003 and 8021.2003. Acceptable RPDs between sample and 

duplicate results were reported for both sets of sample duplicates for all Arochlors. Samples 

8007.2003/8007.2003.52 and 8002B.2003/8002B.2003.52 were also evaluated as sample duplicates, and 

all RPDs were within control limits. 

Two pairs of MS/MSD samples, 8002A.2003 and 8019.2003, were analyzed in association with the 2003 

Riggs Brook Sediment/Wetland Soil samples. The RPDs between MS and MSD recoveries of Arochlor 

1254 were below 50% for both pairs of samples. 

WOODARD&CURRAN (211749.01) Page20 12/10/2003 

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DRAFT 

Based on the results of matrix spike and duplicate analysis, the levels of sampling and analytical 

precision are acceptable. 

3.3.3.2 ACCURACY 

Accuracy is a measure of agreement between results obtained from an analytical method compared with 

known values. Accuracy of the sediment/wetland soil concentrations was evaluated through a review of 

laboratory control sample results. 

Laboratory control samples are soils that are spiked with known concentrations of Arochlor 1254. The 

soils have been previously analyzed and are known to be free of PCB contamination prior to addition of 

the spike. The reported concentrations of Arochlor 1254 were divided by the known concentrations to 

obtain percent recoveries. The percent recoveries of the laboratory control samples were compared 

against the recovery criteria specified in the SAP. All recoveries were in criteria indicating that sample 

concentrations were accurately quantified. 

3.3.33 REPRESENTATTVENESS 

Representativeness expresses the degree to which data accurately and precisely represent a characteristic 

of the population, parameter variation, or environmental condition. Representativeness is controlled 

through measurement of precision and accuracy and comparing the results versus project objectives. 

Methods to evaluate precision and accuracy, as described previously, have indicated that the data are 

representative. A consistent method of sample collection and homogenization has assured that 

representative samples were collected. The comparability data, described in the last subsection of the 

PARCC discussion, demonstrate the consistency of the sample collection methods and therefore, also 

demonstrate that reported PCB concentrations are representative. 

3,3.3.4 COMPLETENESS 

Completeness is a measure of the amount of valid data obtained from a measurement system compared to 

the amount expected. The completeness goal for the project as required by the QAPP is 90%. One 

hundred percent of the data were validated and accepted indicating that the data set is complete for 

samples collected during this investigation. 

WOODARD&CURRAN (211749.01) Page 21 12/10/2003 

DRAFT SED RFT 2003 
DRAFT 

3.3.3.5 COMPARABILITY 

Comparability is a qualitative and quantitative assessment of how different data sets can be compared to 

each other. For the sediment/wetland soils collected at Riggs Brook, comparability was measured by 

analysis of the duplicate results. The duplicate results were used to assess the variability of PCB 

concentrations in the sediment/wetland soil samples. Variability may be due to sampling and/or 

analytical techniques or heterogeneity of PCB concentrations throughout the sample matrix. As stated 

above, the RPD between sample and duplicate concentrations was required to be 50% or less. The 

results from analysis of all pairs of duplicates met criteria indicating that the comparability and 

consistency of the reported results was satisfactory. 

WOODARD&CURRAN (211749,01) Page 22 12/10/2003 

DRAFT SED RPT 2003 
SECTION 4 
DRAFT 

4. SUMMARY OF 2003 SEDIMENT/WETLAND SOIL ANALYTICAL RESULTS 

This section compares 2003 sediment analytical data to the target level of 5 mg/kg total PCBs, and to 

PCB concentrations reported from the 1996 through 2002 sediment/wetland soil sample collection 

events. 

4.1 COMPARISON OF 2003 SEDIMENT/WETLAND SOIL ANALYTICAL RESULTS TO TARGET LEVEL 

A total of 36 sediment/wetland soil samples were collected during 2(X)3 sampling activities. 

Concentrations of total PCBs for all 36 sediment samples were below the target level of 5 mg/kg. 

4.2 COMPARISON OF 2003 SEDIMENT/WETLAND SOIL ANALYTICAL RESULTS TO PREVIOUS 

SEDIMENT/WETLAND SOIL DATA 

Table 4 provides a comparison of analytical results of the 2003-sediment/wetland soil samples to 

analytical results obtained from samples collected from 1996 through 2002 at the same locations. 

Sample locations identified in the 1987 E.C. Jordan RI were slightly different than locations outlined in 

the SAP, therefore the data obtained from this investigation were not directly compared to the 2003 data. 

Analytical results from the 1987 RI are located in Appendix B. 

4.3 MANN-KENDALL STATISTICAL TREND TEST 

As required in the SAP, a Mann-Kendall statistical trend analysis was completed to determine if total 

PCB concentrations were increasing or decreasing at sample locations with at least four years of data. 

Sufficient data were available to complete this test at 26 sampling locations. Data was collected for these 

locations from 1996 through 2002. The Monitor 5 program, which has statistical software including the 

Mann-Kendall test, was used to complete the analysis. The results from the Mann-Kendall test are 

included in Appendix C. The test was not done for the 10 supplemental 9000 series sampling locations. 

The test results indicate, with a 95% confidence interval, that there are no statistically significant trends 

to PCB concentrations over the past seven years. Several sample locations including 8001, 8002A, 

8002B, 8005 and 8015 have consistently had non-detect results for all sample years. For many locations 

such as 8003, 8010, 8016, 8017, 8021, 8022, 8023 and 8039 trace concentrafions of target Arochlors 

have been detected in only one year. 

WOOD/iiRD& CURRAN (211749.01) Page 23 12/10/2003 

DRAFT SED RPT 2003 
DRAFT 

3 

4>f 

7/1S' .1 

TABLE 4: COMPARISON OF 2003 SEDIMENT/WETLAND SOIL MONITORING RESULTS TO HISTORICAL RESULTS 

fSampl ^ 

8001 

8002 

8002A 

8002B 

8003 

8004 

3018 

8005 

8006 

8007 

8008 

8009 

8010 

8011 

8012 

8013 

8039 

8014 

8015 

8016 

8017 

8018 

8019 

8020 

8021 

8022 

8023 

'StTol21?©B^ 

<0.032 

NS 

<0.039 

<0.037/<0.035 

<0.031 

<0,024 J 

4.4 J 

<0.027 

0.95/0.93 

0.77/0.73 

0.035 

0.20 

<0.024 

<0.029 

0.11 

<0.023 

0.088 

0.17 

<0,024 

0.031 

<0.034 

<0.048 

<0.044 

<0.032 J 

<0.039/<0.039 

<0.038 

<0.03 

<0.028 J 

NS 

<0.026 J 

<0.025 J 

<0.027 J 

5 50.024 ^ 

5.63 J ^ 

^0702 J 

2.9 J 

0.562 

0.034 J 

0.304/0.293 

<0.02 

<0.025 

0.178 

<0.019 

<0.024 

0.206 J 

<0.02 

<0.027 J 

<0.03 

0.2 J 

0.394 J 

0.077 J 

<0.029 

0.039 J/0.042 J 

<0.026 

<0,029 

NS 

<0,028 

<0.03 

<0,024 

<0,022> 

C.6.1 J J 

<0I522 

0.81 J/0.66 J 

0.378 J 

<0.027 

0.13 J 

<0.021 

<0.025 

<0.024 

<0.019 

<0.024 

0.238 J 

<0.021 

<0.032 

<0.031 

0.3 J 

0.49 J 

<0.028 

<0.032 

<0.029 

<0.025/<0.025 

@^42000'S 

ag-(mg/kg)r-

<0.031/<0.031 

NS 

< 0.022 

< 0.035 

< 0.029 

< 0.026 

4.6 

< 0.024 

^10 4 J 

0.98 

< 0.027 

1.1 

< 0.024 

< 0.026 

0.14/0.168 

< 0.022 

< 0.033 

1.5 

< 0.025 

< 0.041 

< 0.031 

< 0.023 

< 0.030 

<0.028/<0.05 

< 0.026 

< 0.026 

< 0.025 

<0.07 

NS 

< 0.063 

< 0.063 

< 0.066 

< 0,042 

3.9 

< 0.045 

C 14-0^ ^ 

0.14 

0.095J/0.146J 

0.154 

< 0.047 

0.053 

< 0.059 

0.052 J 

< 0.061 

<0.058/<0.052 

< 0.045 

< 0.058 

< 0.057 

< 0.054 

< 0.050 

< 0.044 

< 0.057 

< 0.055 

< 0.056 

f^998j» S 

Jfitai^B^" 

gcr-'>(mg^g)g 

< 0.092 J 

NS 

< 0.079 

< 0.050 

< 0.063 

NS 

C 6 4 ^ 

^>::^:Q40^ 

(^ 15 9/16.8 "Y 

< 0.040 

0.340 

< 0.040 

0,053 

0.530 

NS 

0.029 

0.430 

< 0.046 

0.071 

0.670 

< 0.043 

0.276 

<0.053/<0.053 

< 0.063 

< 0.063 

< 0.079 

<.073 

NS 

<.046 

<.063 

<-mf\ 29 

^=NS= 

<.046/<.046 

3.2 

2.5 

<.056 

.93 J 

<.043 

.039 J 

.34 J 

^^s^ILX-

< 0.059 

.039 J 

<.092 

<.053 

<.056 

<.043 

.247 J 

.234 

.103J/.06 

<.063 

<.059 

•^%199S,f-„^ 

Tolali-PjSBs^ 

img/kg/@ 

<.066 

<.063 

NS 

NS 

^3-1 ' 

2,8 J 

4.1 J 

<.053 

.77 J 

.24 J 

.047 J 

.279 J 

.11 J 

.044 J 

.132 J 

.47 J 

NS 

.043J/.093J 

<,046 

<,056 

<,053 

<.043 

.029 J 

.059 J 

<,063 

<,059 

,05 J 

X^^ *'' 

WOODARD & CURRAN (211749,01) 

DRAFT SED RPT 2003 

Page 24 12/10/2003 
DRAFT 

-Samplev 

9A925 

9B925 

9B000 

9C925 

9C000 

9C025 

9C050 

9C075 

9C100 

9C125 

•^2003v^-f? « 

%oiarPC:B'sn" 

y (m^/feg)X'' 

0.67 

0.21 

2.1 

0.77 

0.60 

0.49 

0.35 

0.78 

1.1 

1.0 

mtaitGB% 

0.65 J 

0.135 J 

0,9 

2.32 

1.91 

0.76 J 

1.44 J 

1.94 J 

1.13J 

0.75 J 

7',:200ir:-,^ . 

A^Total-PCBs-^* 

0.086 J 

0.279 J 

0.65 J 

0.68 J 

0.32 J 

0.035 

0.39 J 

2.32 J 

0.47 J 

0.51 J 

?ii<Tt2'ooo^ "r-, 

NS 

NS 

12.6 

NS 

2.05 

1.99 

7.3 

11.2 

3.8 

5.5 

S;^otll¥fB||| 

NS 

NS 

NS 

NS 

NS 

NS 

NS 

NS 

NS 

NS 

''tf'=-§i998xr-i:^ 

;.-^fot"ai;iJGBs"VNS 

NS 

NS 

NS 

NS 

NS 

NS 

NS 

NS 

NS 

NS 

NS 

NS 

NS 

NS 

NS 

NS 

NS 

NS 

NS 

f <^f99|* ''^' 

J-..To*tii*PCBf 

:4mg/ki) 'c 

NS 

NS 

NS 

NS 

NS 

NS 

NS 

NS 

NS 

NS 

NOTES: 

Second concentration listed is concentration of duplicate sample, 

J Qualifier indicates the sample concentration is estimated. 

WOODARD & CURRAN (211749,01) 

DRAFT SED RPT 2003 

Page 25 12/10/2003 
SECTION 5 
DRAFT 

5. CONCLUSIONS AND RECOMMENDATIONS 

y ^^^" ^ 

A summary of the events and results associated with the 2003 Riggs Brook Sediment/Wetland Soil 

Sampling events are as follows: 

Due to below normal rainfall for most of the summer of 2003, the water level in Riggs Brook was very 

low. As in 2002, many sample locations that were normally submerged were dry in 2003. 

Concentrations of total PCBs were below the target level of 5 mg/kg at all sediment/wetland soil sample 

locations. 

Seven sample locations from the supplemental sampling grid added in 2000 were again sampled in 2003. 

Three locations (9A925, 9B925 and 9C925) added in 2001 were again sampled in 2003. These samples 

were analyzed to determine if there were trends of PCB concentrations over time since 2000 and 2001. 

Concentrations of total PCBs from all ten of these locations were below the target level of 5 mg/kg and 

were similar to concentrations reported in previous years, and do not appear to show any trends. 

The Mann-Kendall statistical trend analysis indicated that there were no statistically significant trends in 

PCB concentrations over the past seven years. 

The quality control results from data validation procedures indicate that the data are of good quality and 

acceptable for their end use of continued monitoring or PCB concentrations in Riggs Brook near the 

O'Connor Superfund Site. 

As specified in the SAP, annual sediment/wetland soil sampling will continue at Riggs Brook in 2004 to 

monitor concentrations of PCBs at the sample locations. Sample collection will continue to be conducted 

in the fall when water levels are low. 

WOODARD&CURRAN (211749,01) Page 26 12/10/2003 

DRAFT SED RPT 2003 
LIST OF ACRONYMS AND ABBREVIATIONS 

DRAFT 

bgs 

CMP 

DCB 

DGPS 

DQO 

ESD 

KAS 

mg/kg 

MS/MSD 

OU 

PARCC 

PCBs 

ppm 

QAPP 

ROD 

RPD 

RI 

SAP 

SDG 

SCRA 

TCMX 

USEPA 

W&C 

below ground surface 

Central Maine Power 

decachlorobiphenyl 

digital geographic positioning system 

Data Quality Objective 

Explanation of Significant Difference 

Katahdin Analytical Services 

milligrams per kilogram 

matrix spike/matrix spike duplicate 

operational unit 

Precision, Accuracy, Representativeness, Completeness and Comparability 

Polychlorinated biphenyls 

parts per million 

Quality Assurance Project Plan 

Record of Decision 

Relative Percent Difference 

Remedial Investigation 

Sampling and Analysis Plan 

sample delivery group 

Source Control Remedial Action 

tetrachlorometaxylene 

United States Environmental Protection Agency 

Woodard & Curran 

WOODARD & CURRAN (211749,01) 

DRAFT SED RPT 2003 

ACRONYMS AND REFERENCES 12/10/2003 
DRAFT 

LIST OF REFERENCES 

Jordan Co., E.C. 1987; "Draft Remedial Investigation Report F.J. O'Connor Site, Volume I Technical 

Report"; December 1987. 

U.S. Environmental Protection Agency, 1988; "Region I Functional Guidelines for Evaluating Organic 

Analyses"; February 1, 1988, Modified November 1, 1988. 

U.S. Environmental Protection Agency, 1989; "Record of Decision Summary, O'Connor Company 

Superfund Site," Augusta, Maine; September 27, 1989. 

Woodard & Curran, 1996; "Source Control Remedial Acfioh QuaUty Assurance Project Plan," 100 

Percent Remedial Design, O'Connor Company Superfund Site, Augusta, Maine; July 1996. 

Woodard & Curran, 1997; "Final Riggs Brook Sediment and Biota Sampling and Analysis Plan," 

O'Connor Company Superfund Site, Augusta, Maine; October 1997. 

WOODARD&CURRAN (211749,01) ACRONYMS AND REFERENCES 12/10/2003 

DRAFT SED RPT 2003 
APPENDIXA 
DRAFT 

APPENDIX A: SEDIMENT/WETLAND SOIL SAMPLING SURVEY DATA 

WOODARD&CURRAN (21 1749,01) APPENDICES 12/02/2003 

DRAFT SED RPT 2003 
DRAFT 

RIGGS BROOK SEDIMENT SAMPLING LOCATIONS 

O'CONNOR COMPANY SUPERFUND SITE 

AUGUSTA, MAINE 

SAMPL E # 

8001 

8002 

8002A 

8002B 

8003 

8004 

8005 

8006 

8007 

8008 

8009 

8010 

8011 

8012 

8013 

8014 

8015 

8016 

8017 

8018 

8019 

8020 

8021 

8022 

8023 

8039 

9A925 

9B000 

9B925 

9C000 

9C025 

9C050 

9C075 

9C100 

9C125 

9C925 

NORTHIN G 

535386 

535557 

535300 

534472 

535607 

535707 

535707 

535807 

535907 

535807 

535907 

535807 

535907 

536007 

535907 

536007 

535907 

536007 

536107 

536416 

537693.81 

538302 

538626 

539428 

541004 

535919.5 

535842 

535842 

535860 

535860 

535842 

535825 

535807 

535789 

535772 

535878 

EASTING 

3064948 

3065016 

3064862 

3063799 

3065118 

3065118 

3065218 

3065218 

3065218 

3065318 

3065318 

3065418 

3065418 

3065418 

3065518 

3065518 

3065618 

3065618 

3065618 

3065612 

3065949.88 

3066212 

3066164 

3066756 

3067659 

3065518 

3065306 

3065271 

3065289 

3065253 

3065236 

3065218 

3065200 

3065183 

3065165 

3065271 

All coordinates in NAD-83 Maine West 

WOODARD & CURRAN (211749,01) 

DRAFT SED RIT 2003 

APPENDICES 12/02/2003 
APPENDIXB 
DRAFT 

APPENDIX B: 1987 REMEDIAL INVESTIGATION RIGGS BROOK SEDIMENT 

AND BIOTA DATA 

WOODARD&CURRAN (21 1749,01) APPENDICES 12/02/2003 

DRAFT SED RPT 2003 
DRAFT 

1987 RIGGS BROOK SEDIMENT SAMPLE RESULTS 

O'CONNOR COMPANY SUPERFUND SITE 

AUGUSTA, MAINE 

SAMPLE ID 

SED-1 

SED-2 

SED-7B 

SED-8 

SED-9 

SED-10 

SED-11 

SED-12 

SED-13 

SED-14 

SED-15 

SED-A 

SED-B 

1 SED-C 

TOTALPCB 

CONCENTRATION (mg/kg) 

<0.12 

3.4 

4.1 

<0.10 

<0.10 

4.0 

4.5 

1.7 

<1.0 

<0.25 

<0.10 

4.2 

<1.0 

1 

SAMPLE LOCATION | 

Upstreamof O'Connor Site 1 

Adjacent to O'Connor Site lj 

Adjacent to O'Connor Site 

Adjacent to O'Connor Site 

Adjacent to O'Connor Site 

Adjacent to O'Connor Site 

Adjacent to O'Connor Site 

Downstream of O'Connor Site 

Downstream of O'Connor Site 

Downstream of O'Connor Site 

Downstream of O'Connor Site 

Adjacent to O'Connor Site 

Adjacent to O'Connor Site 

Adjacent to O'Connor Site 

WOODARD & CURRAN (21 1749,01) 

DRAFT SED Rin-2003 

APPENDICES 12/02/2003 
I 

f 

1 

I 

I 

I 

I 

<3 

0 09 \ 

CZA 

C 

o 

i 

O 

e n ''^ i 

< - j 

r \ ^yo^ \V5 ^ fl 

<i. CJ ..'• 

>:-^>: 

^^v--

C-16 (SUXFBOQ) 

UPLAND ,^.1 

, ^ MARSH: 

COVER 

Cd 0.11 

OJl 

4 p/d'CONNEF?" 

'SITE ,' 

IBACKGROUND 

(SEE LOCATION INSERT) 

C-13fraOG) 

PC8T 23.5 

O K (TADPCXJES) 

PC8T 22-1 

C-15 (TADPOLES) 

aBACKGROUNO 

£.21 

PC8i 

^ ^ 

^ 

^ !^ ^ 

isnact FRATtf CJ 

r 0.1S 

23 

1.7 

iiT BO 

0.15 

ss° 

S3 

1210 

4« 

NOTES: 

1. ALL VALUES W ppm (mg/kg) 

2. C>tK«CAlJS LISTED AT BW=KGft3t*«.SW10r^ 

ONLY THOSE DETECTED ABOVf: METHOD DETECTION LMTS. 

3. CHEMICALS LISTED AT OrHER ST.»T10NS l^•CUUOe OfCY 

THOSE DETECTED ABOVE BACKGROUND STATION VALUES. 

^ G 

J C^ 

' '^^•^ -

C IS (8ULUCAOS) 

PC8 T 0.03 f C.19 (PUMPK»eeEOS) 1 

PC8 T 0.04 

C-20 (GOLDGN SHNERS) 1 

PC8 T 0.02 

C.21 (TAtVHXES) 

PCB T «.1S 

METALS - SEE BELOW. | 

C.22 (BULLHEADS) 

METALS - SEEBEU 3W. 

C-23 (GOLDEN SHNERS) I 

METALSC-21 

Al 370 

Ba 4.0 

B< 0.01S 

C» B50 

Cd HO 

Co 0.20 

O 1.1 

Cu 2.0 

F« 420 

Hg 0.02S 

K 1260 

Mo 200 

My 10 

NM 1390 

H 0.73 

Pb 0.79 

V OJ55 

Zn 11 

BEE BELDW. 1 

C-22 

240 

2.4 

NO 

ispoo 

0.12 

O.M 

0.90 

330 

0.072 

2520 

620 

13 

13O0 

0.42 

038 

0.51 

2« 

C-23 

62 

25 

f", ^ 

I3JO0 

NO 

SO 

0.70 

I J 

76 

0.078 

2U0 

520 

9.9 

660 

<0.J5 

OJI2 

<0.18 

»S 

Q 

LEGEND 

J^'-i ^ MARSH 

•^S^P'' BRUSH 

C 2 ? TREES 

===== = = DIRT ROAD 

FENCE LINE 

:PAVED ROAD 

r ~ ^ STRUCTURE 

^-^ — STREAM 

•-',-—'- POWER LINE 

) ( CULVERT 

• BIOTA SAMPLING 

LOCATION 

NO NON DETECT 

INSIGNIFICANT 

I CONCENTRATION 

« BACKGROUND 

STATIONS) 

r ii/PRor s COMPOSITE SAMPLE 

C-13(FROG) ID NUMBER AND 

SAMPLE TYPE 

•0 

x. — 

?t 

( X (BUJLHEADS) 

POST Oi3 

C-9 (PUMPKXSEEDS) 

PCST 0.74 

C-10 fdH.L>gADSl 

Cu 2.1 

&23 (B)JUL>eADS) 

pcsr osa 

C-2fl (F1>*T(HS££DS1 

PC8T O M 

C-77 nAOPOLES) 

PCST 0.44 

FIGURE 8-1 

BIOTA SAMPLING STATION LOCATIONS 

AMD SAMPLING RESULTS SUMMARY 

. ECJC«DANCO. 
APPENDIX G 
DRAFT 

APPENDIX C: MANN KENDALL TREND ANALYSIS SEDIMENT SAMPLE 

RESULTS 1996 - 2003 

WOODARD&CURRAN (21 1749,01) APPENDICES 12/02/2003 

DRAFT SED RPT 2003 
Page 1 of3 

Mann-Kendall Trend Test Reooi 

Company: 

Site: 

Program: 

Permit: 

Minimum 

Size: 

Reported by: 

Report 

Options: 

rt 

CENTRAL MAINE Data Group: 

POWER 

COMPANY 

O'CONNOR 

COMPANY SITE 

Riggs 

3 

jmoody 

by sampling point 

Date Range: 

Non-detects: 

Duplicates: 

Confidence 

Level: 

Range of 

Censoring: 

Report 

printed: 

None 

All 

Cohen's method 

Mean 

0.95 

0%-100% 

12/01/2003 2:53:05PM 

Monitor 5 

Parameter UnitSize %NDs S Value Tabular Statistically Direction 

Value Significant 

Trend 

Unclassified 

3018 

Polychlorinated Biphenyls 

PCB ppm 7 0.0% 3 0.386 No 

8001 

Polychlorinated Biphenyls 

PCB ppm 8 100.0% 0 0.548 No 

8002A 

Polychlorinated Biphenyls 

PCB ppm 7 100.0% 0 0.57 No 

8002B 

Polychlorinated Biphenyls 

PCB ppm 7 100.0% 0 0.57 No 

8003 

Polychlorinated Biphenyls 

PCB ppm 8 87.5% -7 0.2365 No 

8004 

Polychlorinated Biphenyls 

PCB ppm 7 71.4% -5 0.281 No 

8005 

Polychlorinated Biphenyls 

PCB ppm 8 100.0% 0 0.548 No 

8006 

Polychlorinated Biphenyls 

file://C:\Monitor5\bin\mrwwwmr.htm 12/01/2003 
Page 2 of3 

PCB ppm 8 0.0% -4 0.36 No 

8007 

Polychlorinated Biphenyls 

PCB ppm 8 0.0% -2 0.452 No 

8008 

Polychlorinated Biphenyls 

PCB ppm 8 50.0% 2 0.452 No 

8009 

Polychlorinated Biphenyls 

PCB ppm 8 0.0% -6 0.274 No 

8010 

Polychlorinated Biphenyls 

PCB ppm 8 87.5% -7 0.2365 No 

8011 

Polychlorinated Biphenyls 

PCB ppm 8 62.5% -14 0.054 No 

8012 

Polychlorinated Biphenyls 

PCB ppm 8 25.0% -5 0.317 No 

8013 

Polychlorinated Biphenyls 

PCB ppm 7 57.1% -7 0.191 No 

8014 

Polychlorinated Biphenyls 

PCB ppm 8 12.5% 2 0.452 No 

8015 

Polychlorinated Biphenyls 

PCB ppm 8 100.0% 0 0.548 No 

8016 

Polychlorinated Biphenyls 

PCB ppm 8 75.0% 3 0.406 No 

8017 

Polychlorinated Biphenyls 

PCB ppm 8 87.5% -3 0.406 No 

8018 

Polychlorinated Biphenyls 

PCB ppm 8 75.0% 7 0.2365 No 

8019 

Polychlorinated Biphenyls 

PCB ppm 8 37.5% 1 0.5 No 

8020 

Polychlorinated Biphenyls 

PCB ppm 8 62.5% -6 0.274 No 

8021 

fl le ://C :\Monitor5\bin\mrwwwmr.htm 12/01/2003 
Page 3 of3 

Polychlorinated Biphenyls 

PCB ppm 8 87.5% -5 0.317 No 

8022 

Polychlorinated Biphenyls 

PCB ppm 8 87.5% 5 0.317 No 

8023 

Polychlorinated Biphenyls 

PCB ppm 8 87.5% -7 0.2365 No 

8039 

Polychlorinated Biphenyls 

PCB ppm 7 71.4% 7 . 0.191 No 

End of 

report 

Monitor 5 Dove Technologies , Inc 

file://C:\Monitor5\bin\mrwwwmr.htm 12/01/2003 
Pagel of 8 

Result Report 

Company:CENTRAL MAINE POWER Data 

COMPANY Group: 

None 

Site: O'CONNOR COMPANY SITE Date Range: All 

Program: Riggs 

Report 12/02/2003 8:49:00AM 

printed: 

Report by sampling point 

Options: 

Parameter 

(Unit) 

Unclassified 

3018 

Polychlorinated Biph 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

8001 

Polychlorinated Biph 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

8002A 

Date 

lenyls 

09/06/2000 

09/06/2000 

09/06/2000 

09/06/2000 

10/10/2001 

09/05/2002 

09/11/2003 

enyls 

10/23/1996 

10/10/1997 

09/23/1998 

09/15/1999 

09/05/2000 

10/10/2001 

09/05/2002 

09/11/2003 

Polychlorinated Biphenyls 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

09/07/2000 

09/07/2000 

09/07/2000 

09/07/2000 

10/10/2001 

09/05/2002 

09/11/2003 

file://C:\Monitor5\bin\mrwwwmr.htm 

Permit: 

Reported by: jmoody 

Sample ID 

3018 

3018 

3018 

3018 

3018-2001 

3018.2002000000002 

3018-2003 

8001, 10/23/1996 

8001, 10/10/1997 

8001,09/23/1998 

8001,09/15/1999 

8001 

8001-2001 

8001.2002000000002 

8001-2003 

8002A 

8002A 

8002A 

8002A 

8002-2001 

8002A.2002 

8002A-2003 

Monitor 5 

Result ] 

Value 

4.100 

4.600 

3.900 

6.400 

6.100 

5.630 

4.400 

<0.066 

<0.073 

<0.092 

<0.070 

<0.031 

<0.029 

<0.028 

<0.032 

<0.022 

<0.063 

<0.079 

<0.046 

<0.028 

<0.026 

<0.039 

Detection 

Limit 

0.046 

0.026 

0.045 

0.040 

0.022 

0.020 

0.000 

0.066 

0.073 

0.092 

0.070 

0.031 

0.029 

0.028 

0.032 

0.022 

0.063 

0.079 

0.046 

0.028 

0.026 

0.039 

Code 

J 

J 

U,J 

U,J 

12/02/2003 
Page 2 of 8 

8002B 

Polychlorinated Biphenyls 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

8003 

09/07/2000 

09/07/2000 

09/07/2000 

09/07/2000 

10/10/2001 

09/05/2002 

09/11/2003 

Polychlorinated Biphenyls 

PCB (ppm) 

PCB (jppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

8004 

Polychlorinated Bipl 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

8005 

10/23/1996 

10/10/1997 

09/23/1998 

09/15/1999 

09/05/2000 

10/10/2001 

09/05/2002 

09/11/2003 

lenyls 

09/06/2000 

09/06/2000 

09/06/2000 

09/06/2000 

10/10/2001 

09/05/2002 

09/11/2003 

Polychlorinated Biphenyls 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

8006 

10/23/1996 

10/09/1997 

09/23/1998 

09/15/1999 

09/05/2000 

10/10/2001 

09/05/2002 

09/11/2003 

Polychlorinated Biphenyls 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

10/23/1996 

10/09/1997 

09/23/1998 

09/15/1999 

8002B 

8002B 

8002B 

8002B 

8002b-2001 

8002B.2002 

8002B-2003 

8003, 10/23/1996 

8003, 10/10/1997 

8003,09/23/1998 

8003,09/15/1999 

8003 

8003-2001 

8003.2002000000002 

8003-2003 

8004 

8004 

8004 

8004 

8004-2001 

8004.2002000000002 

8004-2003 

8005, 10/23/1996 

8005, 10/09/1997 

8005,09/23/1998 

8005,09/15/1999 

8005 

8005-2001 

8005.2002000000002 

8005-2003 

8006, 10/23/1996 

8006, 10/09/1997 

8006,09/23/1998 

8006,09/15/1999 

<0.035 

<0.063 

<0.050 

<0.079 

<0.030 

<0.025 

<0.037 

0.097 

<0.050 

<0.063 

<0.066 

<0.029 

<0.024 

<0.027 

<0.031 

2.800 

<0.026 

<0.042 

29.000 

<0.022 

<0.020 

<0.024 

<0.053 

<0.046 

<0.040 

<0.045 

<0.024 

<0.022 

<0.020 

<0.027 

0.770 

3.200 

16.400 

14.000 

0.035 

0.063 

0.050 

0.07-9 

0.030 

0.025 U,J 

0.037 

0.065 J 

0.050 

0.063 

0.066 

0.029 

0.024 

0.027 U,J 

0.031 

0.053 

0.026 

0.042 

0.077 

0.022 

0.020 U,J 

0.024 J 

0.053 

0.046 

0.040 

0.045 

0.024 

0.022 

0.020 U,J 

0.027 

0.056 

0.061 

0.040 

0.072 
Page 3 of 8 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

8007 

Polychlorinated Bipt 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

8008 

09/05/2000 

10/10/2001 

09/05/2002 

09/11/2003 

lenyls 

10/23/1996 

10/09/1997 

09/23/1998 

09/15/1999 

09/05/2000 

10/10/2001 

09/05/2002 

09/11/2003 

Polychlorinated Biphenyls 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

8009 

10/23/1996 

10/09/1997 

09/23/1998 

09/15/1999 

09/05/2000 

10/10/2001 

09/05/2002 

09/11/2003 

Polychlorinated Biphenyls 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

8010 

10/23/1996 

10/09/1997 

09/23/1998 

09/15/1999 

09/05/2000 

10/10/2001 

09/04/2002 

09/11/2003 

Polychlorinated Biphenyls 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

file://C:\Monitor5\bin\m] 

10/23/1996 

10/09/1997 

09/23/1998 

09/15/1999 

09/05/2000 

10/10/2001 

09/04/2002 

09/11/2003 

rwwwmr.htm 

8006 

8006-2001 

8006.2002000000002 

8006-2003 

8007, 10/23/1996 

8007, 10/09/1997 

8007,09/23/1998 

8007,09/15/1999 

8007 

8007-2001 

8007.2002000000002 

8007-2003 

8008, 10/23/1996 

8008, 10/09/1997 

8008,09/23/1998 

8008,09/15/1999 

8008 

8008-2001 

8008.2002000000002 

8008-2003 

8009, 10/23/1996 

8009, 10/09/1997 

8009,09/23/1998 

8009,09/15/1999 

8009 

8009-2001 

8009.2002000000002 

8009-2003 

8010, 10/23/1996 

8010, 10/09/1997 

8010,09/23/1998 

8010,09/15/1999 

8010 

8010-2001 

8010.2002000000002 

8010-2003 

10.400 

0.810 

2.900 

0.950 

0.240 

2.500 

1.200 

0.140 

0.980 

0.378 

0.562 

0.770 

0.047 

<0.056 

<0.040 

0.146 

<0.027 

<0.027 

0.034 

0.035 

0.279 

0.930 

0.340 

0.154 

1.100 

0.130 

0.304 

0.200 

0.110 

<0.043 

<0.040 

<0.047 

<0.024 

<0.021 

<0.020 

<0.024 

0.200 

0.025 J 

0.026 J 

0.000 

0.064 J 

0.051 

0.047 

0.045 

0.200 

0.022 J 

0.020 

0.000 

0.040 J 

0.056 

0.040 

0.079 

0.027 

0.027 

0.031 J 

0.000 

0.070 J 

0.068 J 

0.070 

0.062 

0.200 

0.026 J 

0.025 

0.000 

0.052 J 

0.043 

0.040 

0.047 

0.024 

0.021 

0.020 U 

0.024 

12/02/2003 
Page 4 of 8 

8011 

Polychlorinated Bipl 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

8012 

lenyls 

10/23/1996 

10/09/1997 

09/23/1998 

09/15/1999 

09/05/2000 

10/10/2001 

8011,10/23/1996 

8011,10/09/1997 

8011,09/23/1998 

8011,09/15/1999 

8011 

8011-2001 

09/04/2002 8011.2002000000002 

09/11/2003 

Polychlorinated Biphenyls 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

8013 

10/23/1996 

10/09/1997 

09/23/1998 

09/15/1999 

09/05/2000 

10/10/2001 

8011-2003 

8012, 10/23/1996 

8012, 10/09/1997 

8012,09/23/1998 

8012,09/15/1999 

8012 

8012-2001 

09/04/2002 8012.2002000000002 

09/11/2003 

Polychlorinated Biphenyls 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

8014 

09/05/2000 

09/05/2000 

09/05/2000 

09/05/2000 

10/10/2001 

8012-2003 

8013 

8013 

8013 

8013 

8013-2001 

09/04/2002 8013.2002000000002 

09/11/2003 

Polychlorinated Biphenyls 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

8015 

10/23/1996 

10/09/1997 

09/23/1998 

09/15/1999 

09/05/2000 

10/10/2001 

09/04/2002 

09/11/2003 

Polychlorinated Biphenyls 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

10/23/1996 

10/09/1997 

09/23/1998 

fiIe://C:\Monitor5\bin\mrwwwmr.htm 

8013-2003 

8014, 10/23/1996 

8014, 10/09/1997 

8014,09/23/1998 

8014,09/15/1999 

8014 

8014-2001 

0.044 

0.039 

0.053 

<0.051 

<0.026 

<0.025 

<0.025 

<0.029 

0.132 

0.340 

0.530 

<0.059 

0.140 

<0.024 

0.178 

0.110 

0.470 

<0.022 

0.052 

5.700 

<0.019 

<0.019 

<0.023 

0.040 J 

0.038 J 

0.050 

0.05.1 

0.026 

0.025 

0.025 U 

0.029 

0.053 J 

0.071 

0.074 

0.059 

0.200 

0.024 

0.023 

0.000 

0.063 J 

0.022 

0.039 

0.057 

0.019 

0.019 U 

0.023 

0.043 0.040 J 

0.039 0.038 J 

0.430 0.066 

<0.058 0.058 

1.500 0.200 

0.238 0.026 J 

8014.2002000000002 0.206 0.028 

8014-2003 

8015, 10/23/1996 

8015, 10/09/1997 

8015,09/23/1998 

0.170 0.000 

<0.046 0.046 

<0.092 0.092 

<0.046 0.046 

12/02/2003 
PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

8016 

09/15/1999 

09/05/2000 

10/10/2001 

09/04/2002 

09/11/2003 

Polychlorinated Biphenyls 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

8017 

10/23/1996 

10/09/1997 

09/23/1998 

09/15/1999 

09/05/2000 

10/10/2001 

09/04/2002 

09/11/2003 

Polychlorinated Biphenyls 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

8018 

10/23/1996 

10/09/1997 

09/23/1998 

09/15/1999 

09/05/2000 

10/10/2001 

09/04/2002 

09/11/2003 

Polychlorinated Biphenyls 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

8019 

10/23/1996 

10/09/1997 

09/23/1998 

09/15/1999 

09/05/2000 

10/10/2001 

09/04/2002 

09/11/2003 

Polychlorinated Biphenyls 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

10/23/1996 

10/09/1997 

09/23/1998 

09/15/1999 

09/05/2000 

10/10/2001 

09/04/2002 

file://C:\Monitor5\bin\mrwwwmr.htm 

8015,09/15/1999 

8015 

8015-2001 

8015.2002000000002 

8015-2003 

8016, 10/23/1996 

8016, 10/09/1997 

8016,09/23/1998 

8016,09/15/1999 

8016 

8016-2001 

8016.2002000000002 

8016-2003 

8017, 10/23/1996 

8017, 10/09/1997 

8017,09/23/1998 

8017,09/15/1999 

8017 

8017-2001 

8017.2002000000002 

8017-2003 

8018, 10/23/1996 

8018, 10/09/1997 

8018,09/23/1998 

8018,09/15/1999 

8018 

8018-2001 

8018.2002000000002 

8018-2003 

8019, 10/23/1996 

8019, 10/09/1997 

8019,09/23/1998 

8019,09/15/1999 

8019 

8019-2001 

8019.2002000000002 

<0.045 

<0.025 

<0.021 

<0.020 

<0.024 

<0.056 

<0.053 

0.071 

<0.058 

<0.041 

<0.032 

<0.027 

0.031 

<0.053 

<0.056 

0.670 

<0.057 

<0.031 

<0.030 

<0.030 

<0.034 

<0.043 

<0.043 

<0.043 

<0.054 

<0.023 

0.300 

0.200 

<0.048 

0.029 

0.247 

0.276 

<0.050 

<0.030 

0.490 

0.394 

Page 5 of 8 

0.045 

0.025 

0.021 

0.020 

0.024 

0.056 

0.053 

0.050 

0.058 

0.041 

0.032 

0.027 

0.000 

0.053 

0.056 

0.113 

0.057 

0.031 

0.030 

0.030 

0.034 

0.043 

0.043 

0.043 

0.054 

0.023 

0.042 

0.052 

0.048 

0.028 

0.068 

0.060 

0.050 

0.030 

0.041 

0.035 

U 

u 

u 

J 

J 

J 

J 

J 

12/02/2003 
Page 6 of 8 

PCB (ppm) 

8020 

09/11/2003 

Polychlorinated Biphenyls 

PCB (ppm) 10/23/1996 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

8021 

10/09/1997 

09/23/1998 

09/15/1999 

09/05/2000 

10/10/2001 

09/04/2002 

09/11/2003 

Polychlorinated Biphenyls 

PCB (ppm) 10/23/1996 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

8022 

10/09/1997 

09/23/1998 

09/15/1999 

09/05/2000 

10/10/2001 

09/04/2002 

09/11/2003 

Polychlorinated Biphenyls 

PCB (ppm) 10/23/1996 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

8023 

10/09/1997 

09/23/1998 

09/15/1999 

09/05/2000 

10/10/2001 

09/04/2002 

09/11/2003 

Polychlorinated Biphenyls 

PCB (ppm) 10/23/1996 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

PCB (ppm) 

8039 

Polychlorinated 

PCB (ppm) 

10/09/1997 

09/23/1998 

09/15/1999 

09/05/2000 

10/10/2001 

09/04/2002 

09/11/2003 

Biphenyls 

09/05/2000 

8019-2003 

8020, 10/23/1996 

8020, 10/09/1997 

8020,09/23/1998 

8020,09/15/1999 

8020 

8020-2001 

8020.2002000000002 

8020-2003 

8021, 10/23/1996 

8021, 10/09/1997 

8021,09/23/1998 

8021,09/15/1999 

8021 

8021-2001 

8021.2002000000002 

8021-2003 

8022, 10/23/1996 

8022, 10/09/1997 

8022,09/23/1998 

8022,09/15/1999 

8022 

8022-2001 

8022.2002000000002 

8022-2003 

8023, 10/23/1996 

8023, 10/09/1997 

8023,09/23/1998 

8023,09/15/1999 

8023 

8023-2001 

8023.2002000000002 

8023-2003 

8039 

<0.044 

0.059 

0.234 

<0.053 

<0.044 

<0.028 

<0.028 

0.077 

<0.032 

<0.063 

0.103 

<0.063 

<0.057 

<0.026 

<0.032 

<0.029 

<0.039 

<0.059 

<0.063 

<0.063 

<0.055 

<0.026 

<0.029 

0.039 

<0.038 

0.050 

<0.059 

<0.079 

<0.056 

<0.025 

<0.025 

<0.026 

<0.030 

<0.059 

0.044 

0.053 J 

0.044 

0.053 

0.044 

0.028 

0.028 

0.033 J 

0.032 J,J 

0.063 

0.057 J 

0.063 

0.057 

0.026 

0.032 

0.029 U 

0.039 

0.059 

0.063 

0.063 

0.055 

0.026 

0.029 

0.036 

0.038 

0.045 J 

0.059 

0.079 

0.056 

0.025 

0.025 

0.026 U 

0.030 

0.059 
Page 7 of 8 

PCB (ppm) 09/05/2000 

PCB (ppm) 09/05/2000 

PCB (ppm) 09/05/2000 

PCB (ppm) 10/10/2001 

PCB (ppm) 09/04/2002 

PCB (ppm) 09/11/2003 

9A925 

Polychlorinated Biphenyls 

PCB (ppm) 10/10/2001 

PCB (ppm) 09/05/2002 

PCB (ppm) 09/11/2003 

9B000 

Polychlorinated Biphenyls 

PCB (ppm) 10/10/2001 

PCB (ppm) 09/05/2002 

PCB (ppm) 09/11/2003 

9B925 

Polychlorinated Biphenyls 

PCB (ppm) 10/10/2001 

PCB (ppm) 09/05/2002 

PCB (ppm) 09/11/2003 

9C000 

Polychlorinated Biphenyls 

PCB (ppm) 10/10/2001 

PCB (ppm) 09/05/2002 

PCB (ppm) 09/11/2003 

9C025 

Polychlorinated Biphenyls 

PCB (ppm) 10/10/2001 

PCB (ppm) 09/05/2002 

PCB (ppm) 09/11/2003 

9C050 

Polychlorinated Biphenyls 

PCB (ppm) 10/10/2001 

PCB (ppm) 09/05/2002 

PCB (ppm) 09/11/2003 

9C075 

Polychlorinated Biphenyls 

PCB (ppm) 10/10/2001 

PCB (ppm) 09/05/2002 

PCB (ppm) 09/11/2003 

9C100 

Polychlorinated Biphenyls 

PCB (ppm) 10/10/2001 

file://C:\Monitor5\bin\mrwwwmr.htm 

8039 

8039 

8039 

8039-2001 

8039.2002000000002 

8039-2003 

9A925-2001 

9A925.2002 

9A952-2003 

9B000-2001 

9B000.2002 

9B000-2003 

9B925-2001 

9B925.2002 

9B925-2003 

9C000-2001 

- 9C000.2002 

9C000-2003 

9C025-2001 

9C025.2002 

9C025-2003 

9C050-2001 

9C050.2002 

9C050-2003 

9C075-2001 

9C075.2002 

9C075-2003 

9C100-2001 

<0.033 

<0.061 

0.029 

<0.024 

<0.024 

0.088 

0.086 

0.650 

0.670 

0.650 

0.900 

2.100 

0.279 

0.100 

0.210 

0.320 

1.910 

0.600 

0.035 

0.760 

0.490 

0.390 

1.440 

0.350 

2.320 

1.940 

0.780 

0.470 

0.033 

0.061 

0.050 

0.024 

0.024 

0.000 

0.023 

0.023 

0.000 

0.024 

0.022 

0.000 

0.026 

0.023 

0.000 

0.026 

0.023 

0.000 

0.024 

0.022 

0.000 

0.023 

0.022 

0.000 

0.026 

0.023 

0.000 

0.024 

u 

J 

J 

J 

J 

J 

J 

J 

12/02/2003 
Page 8 of 8 

PCB (ppm) 09/05/2002 

PCB (ppm) 09/11/2003 

9C125 

Polychlorinated Biphenyls 

PCB (ppm) 10/10/2001 

9C 100.2002 

9C100-2003 

9C125-2001 

PCB (ppm) 09/05/2002 9C125.2002 

PCB (ppm) 09/11/2003 9C125-2003 

9C925 

Polychlorinated Biphenyls 

PCB (ppm) 10/10/2001 9C925-2001 

PCB (ppm) 09/05/2002 9C925.2002 

PCB (ppm) 09/11/2003 9C925-2003 

End of report 

Monitor 5 Dove Technologies , Ine 

1.130 

1.100 

0.510 

0.750 

1.000 

0.680 

2.320 

0.770 

0.023 

0.000 

0.024 J 

0.021 

0.000 

0.027 J 

0.027 

0.000