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2009 Environmental Monitoring Report - Current and Former Landfill Areas

BROOKHAVEN NATIONAL LABORATORY

2009 ENVIRONMENTAL MONITORING

REPORT

CURRENT AND FORMER LANDFILL AREAS

Prepared by

Brookhaven National Laboratory

Environmental Protection Division

Upton, New York

March 11, 2010

BROOKHAVEN NATIONAL LABORATOR

2009 ENVIRONMENTAL MONITORING REPORT

CURRENT AND FORMER LANDFILL AREAS

Executive Summary

This report documents the Operations and Maintenance activities undertaken during the calendar

year 2009 for the Current Landfill (AOC 3) and the Former Landfill Areas (Former Landfill AOC

2A, Interim Landfill AOC 2D, and Slit Trench AOC 2E). Brookhaven National Laboratory is

responsible for performing this work to comply with the post-closure O&M requirements specified

in 6 New York State Code of Rules and Regulations (NYCRR) Part 360, Solid Waste Management

Facilities, effective December 31, 1988. The landfill caps are functioning as designed and the 2009

results are consistent with results from previous years.

GROUNDWATER QUALITY

The groundwater quality at both the Current and Former Landfill Areas remains relatively

unchanged from 2008. Volatile organic compounds (VOCs) and metals continue to be detected

downgradient of the Current Landfill. The most prevalent VOCs detected above standards are

chloroethane and benzene, at maximum concentrations of 27 μg/L and 2 μg/L, respectively. As with

previous years, iron, manganese, and arsenic were detected downgradient from the Current Landfill

at concentrations above applicable standards. Concentrations of these metals were similar to those

detected in 2008. Maximum concentrations of iron, manganese, and arsenic in downgradient wells

were 68,900 μg/L, 6,650 μg/L, and 23 μg/L, respectively. These results are an indicator of continued

low level leachate generation at this landfill.

Concentrations of parameters detected in wells downgradient of the Former Landfill Area do not

indicate the presence of leachate. VOCs were not detected above standards in Former Landfill Area

monitoring wells. Leachate indicator parameters and metals concentrations were generally the same

when comparing downgradient monitoring wells to upgradient monitoring wells.

The groundwater monitoring well network and sampling frequencies for both the Current Landfill

and the Former Landfill are adequate at this time.

SOIL-GAS MONITORING

Soil-gas monitoring at the Current Landfill indicates that decomposition is still occurring. However,

as with prior years, there is no indication that the vapors are migrating beyond the monitoring well

network. Therefore, there is no potential risk to the nearby National Weather Service building. Soil-

gas monitoring at the Former Landfill Area indicates that there are only minimal detects of hydrogen

sulfide, with no detectable levels of methane present. The soil gas monitoring well networks are

sufficient to monitor both landfill areas.

MAINTENANCE AND REPAIR

Monthly inspections and maintenance continued throughout 2009. To prevent ruts in the landfills

caused by the weight of the lawn mowers and a significant amount of precipitation, the cutting of the

grass only occurs when optimal soil conditions are evident. This pattern of vegetation control will

continue. Small animal burrows were noted during the biannual LTRA inspections. Also vegetation

was noted growing in the drainage channels. Work orders were placed to fill in the animal burrows

and the vegetation was removed in June 2009.

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TABLE OF CONTENTS

Executive Summary………………………………………………………………………………..i

1.0 INTRODUCTION............................................................................................................................1

1.1 Site Description and Project Background..........................................................................1

1.2 Overview of the Monitoring Program................................................................................3

Groundwater Monitoring ........................................................................................... 3

2.0 GROUNDWATER MONITORING...............................................................................................4

2.1 Monitoring Well Networks..................................................................................................4

2.1.1 Current Landfill ............................................................................................. 4

2.1.2 Former Landfill.............................................................................................. 5

2.1.3 Sampling Frequency and Analytical Parameters ........................................... 6

2.1.4 Quality Assurance / Quality Control ............................................................. 7

2.2 Landfill Groundwater Monitoring Results........................................................................8

2.2.1 Current Landfill ............................................................................................. 9

2.2.1.1 Volatile Organic Compounds (VOCs)................................................................................................9

2.2.1.2 Water Chemistry Parameters...........................................................................................................10

2.2.1.3 Metals ..............................................................................................................................................11

2.2.1.4 Radionuclides...................................................................................................................................12

2.2.2 Former Landfill............................................................................................ 12

2.2.2.1 VOCs................................................................................................................................................12

2.2.2.2 Water Chemistry Parameters...........................................................................................................13

2.2.2.3 Metals ..............................................................................................................................................13

2.2.2.4 Pesticides/PCBs...............................................................................................................................14

2.2.2.5 Radionuclides...................................................................................................................................14

3.0 WOODED WETLAND MONITORING.....................................................................................14

4.0 SOIL-GAS MONITORING ..........................................................................................................14

4.1 Soil-gas Monitoring Networks ..........................................................................................14

4.1.1 Current Landfill ........................................................................................... 15

4.1.2 Former Landfill Area ................................................................................... 15

4.1.3 Sampling Frequency .................................................................................... 15

4.2 Results of Soil-Gas Monitoring.........................................................................................15

4.2.1 Current Landfill ........................................................................................... 16

4.2.1.1 Trend in Soil-Gas Data....................................................................................................................17

4.2.2 Former Landfill Area ................................................................................... 17

4.2.2.1 Trends in Soil-Gas Data ..................................................................................................................17

5.0 MAINTENANCE AND REPAIR .................................................................................................18

5.1 Landfill Cap and Gas Vents..............................................................................................18

5.2 Drainage Structures...........................................................................................................18

5.3 Environmental Monitoring System ..................................................................................18

5.4 Related Structures..............................................................................................................19

6.0 CONCLUSIONS AND RECOMMENDATIONS .......................................................................19

6.1 Groundwater Monitoring..................................................................................................19

6.1.1 Conclusions for the Current Landfill ........................................................... 19

6.1.2 Recommendations for the Current Landfill ................................................. 20

6.1.3 Conclusions for the Former Landfill Area................................................... 20

6.1.4 Recommendations for the Former Landfill Area......................................... 20

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6.2 Soil-Gas Monitoring...........................................................................................................20

6.2.1 Conclusions for the Current Landfill ........................................................... 20

6.2.2 Recommendations for the Current Landfill ................................................. 21

6.2.3 Conclusions for the Former Landfill Area................................................... 21

6.2.4 Recommendations for the Former Landfill Area......................................... 21

6.3 Maintenance and Repair ...................................................................................................21

6.3.1 Current Landfill ........................................................................................... 21

6.3.2 Former Landfill Area ................................................................................... 21

7.0 REFERENCES...............................................................................................................................21

LIST OF TABLES

1. Analytical Requirements For Groundwater Samples

2. Current Landfill – Summary of 2009 VOC Data

3. Current Landfill – Summary of 2009 Water Chemistry Data

4. Current Landfill – Summary of 2009 Metals Data

5. Current Landfill – Summary of 2009 Radionuclide Data

6. Former Landfill – Summary of 2009 VOC Data

7. Former Landfill Area – Summary of 2009 Water Chemistry Data

8. Former Landfill Area – Summary of 2009 Metals Data

9. Former Landfill Area – Summary of 2009 Pesticide/PCB Data

10. Former Landfill Area – Summary of 2009 Radionuclide Data

11. Soil-gas Monitoring Well Description

12. 2009 Current Landfill Soil-gas Monitoring Summary

13. 2009 Former Landfill Area Soil-gas Monitoring Summary

LIST OF FIGURES

1. Site Location Map

2. Current Landfill Monitoring Well Locations

3. Water Table Contour Map

4. Former Landfill Area Monitoring Well Locations

5. Current Landfill VOC Trend Plots

6. Current Landfill Alkalinity and Chloride Trend Plots

7. Current Landfill Iron Trend Plots

8. Current Landfill Tritium and Strontium-90 Trend Plots

9. Former Landfill Area VOC Trend Plots

10. Former Landfill Area Alkalinity and Chloride Trend Plots

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11. Former Landfill Area Iron Trend Plots

12. Former Landfill Area Tritium and Strontium-90 Trend Plots

13. Current Landfill Soil-Gas Monitor Location Map

14. Former Landfill Area Soil-Gas Monitor Location Map

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LIST OF APPENDICES

A. Soil-Gas Sampling Field Notes

B. Monthly Site Landfill Inspection Forms

C. Historical Soil-Gas Monitoring Data

ACRONYMS

BNL Brookhaven National Laboratory

BSA Brookhaven Science Associates

CERCLA Comprehensive Environmental

Response, Compensation and

Liability Act

CLF Current Landfill

DCG Derived concentration guides

DOE U.S. Department of Energy

DQOs Data quality objectives

EIMS Environmental Info. Mgmt. System

FLF Former Landfill

HWMF Former Hazardous Waste

Management Facility

LEL Lower explosive limit

MS/MSDs Matrix spike/matrix spike duplicates

NPL National Priorities List

NYSDEC NY State Dept. of Environmental

Conservation

NYSDOH NY State Dept. of Health

O&M Operations and Maintenance

OU Operable Unit

PCBs polychlorinated biphenyls

QA/QC Quality Assurance/Quality Control

QAPP Quality Assurance Project Plan

Sr-90 Strontium 90

TDS Total dissolved solids

TKN Total Kjeldahl nitrogen

TSS Total suspended solids

TVOCs Total volatile organic compounds

UEL Upper explosive limit

VOCs Volatile organic compounds

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1.0 INTRODUCTION

This report documents the Operation and Maintenance (O&M) activities conducted during calendar

year 2009 for the Current Landfill (AOC 3) and the Former Landfill Areas (Former Landfill AOC

2A, Interim Landfill AOC 2D, and Slit Trench AOC 2E). Brookhaven National Laboratory (BNL)

is responsible for performing this work to comply with the post-closure O&M requirements

specified in the 6 New York State Code of Rules and Regulations (6NYCRR) Part 360, Solid Waste

Management Facilities, effective December 31, 1988. The details of the O&M programs are

described in the Final Operations and Maintenance Manuals for the Current Landfill (CDM Federal,

1996a) and the Former Landfill Areas (CDM Federal, 1996b).

The following are the primary objectives of the O&M program:

 Monitor the effectiveness of the impermeable caps in protecting groundwater quality;

 Monitor the potential generation and migration of soil-gas; and

 Maintain and monitor the various components of the closure system (landfill caps, drainage

structure, and environmental monitoring systems).

This is the fourteenth year of O&M for the Current Landfill, the thirteenth year for the Former

Landfill and Slit Trench, and the twelfth year for the Interim Landfill.

1.1 Site Description and Project Background

BNL is a 5,265-acre site located in central eastern Long Island, New York. The facility is a federally

owned and funded international research and learning center managed, by Brookhaven Science

Associates (BSA) under contract with the United States Department of Energy (DOE). On December

21, 1989, the site was placed on the United States Environmental Protection Agency’s (USEPA’s)

National Priorities List (NPL), a ranking of hazardous waste sites compiled by the federal

government as part of the Comprehensive Environmental Response, Compensation and Liability Act

(CERCLA). Placing BNL on the NPL resulted in the establishment of a remediation-task list for

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various locations around the facility. The site subsequently was divided into seven separate

remediation work areas known as Operable Units (OU). The Current Landfill and Former Landfill

Areas are located in OU I, near the south central portion of the BNL site (see Figure 1).

Current Landfill. The Current Landfill consists of one unlined waste-cell that operated from the late

1960s until 1990 for disposing of waste generated at the Laboratory. An impermeable cap covering

the cell was completed in November 1995. Additional information about the cap’s construction can

be obtained from the Construction Certification Report for the Current Landfill (CDM Federal,

1996b). Following the installation of the cap, the post-closure groundwater-monitoring program was

implemented in December 1996, in accordance with 6 NYCRR Part 360 Section 2.15, Solid Waste

Management Facilities (effective December 31, 1988).

Groundwater quality near the Current Landfill is monitored under the O&M program for a wide

variety of volatile organic compounds (VOCs), metals, radiological, and water chemistry (landfill

leachate) parameters. Monitoring in this vicinity was expanded in 1999 to include a wetland area

adjacent to the landfill’s eastern boundary. This area, known as the Wooded Wetland area, is a two-

acre wetland located between the Former Hazardous Waste Management Facility (HWMF) and the

Current Landfill. The wetland receives surface runoff from the Current Landfill and usually is

flooded during the spring/early summer and dry in late summer/fall. Monitoring of the Wooded

Wetland area has been incorporated into the Current Landfill Monitoring Program and consists of

sampling and analyzing surface water and sediment to evaluate the potential for leachate migrating

into this area, as originally performed under the OU I Ecological Risk Assessment (CDM Federal,

1999).

As required under 6 NYCRR Part 360, groundwater quality must be monitored for a minimum of

five years, after which the permittee may request modification of the sampling and analysis

requirements. In October 2001, BNL submitted the Five-Year Evaluation Report for the Current

Landfill (BNL, 2001). This report assessed groundwater trends over the five years after capping, and

proposed changes to the sampling program. These changes were implemented in CY02. In July

2006, BNL issued the Final Five-Year Review Report which discussed all remediation areas at the

site. Review of the Current Landfill was included in this report.

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FormerLandfill Area The Former Landfill Area encompasses three closely located landfill units; the

Former Landfill, the Slit Trench, and the Interim Landfill. The Former Landfill is an unlined waste-

disposal area originally used by the United States Army in the 1940s. Waste disposal operations

ceased in 1966, and the landfill was covered with soil. The Interim Landfill also is unlined, and was

reportedly used for approximately one year between the time the Former Landfill was closed and the

Current Landfill was opened. The Slit Trench is unlined as well, and is believed to have operated

between 1960 and 1967 for disposal of construction and demolition debris (CDM Federal, 1996).

The Former Landfill and Slit Trench were capped in November 1996 and the Interim Landfill was

capped in October 1997. Additional information about the construction of the caps can be found in

the Construction Certification Report for the Former Landfill (Roy F. Weston, 1997) and

Construction Certification Report for the Interim Landfill Capping (PW Grosser, 1997). BNL started

O&M activities in December 1996 at the Former Landfill and Slit Trench, and in November 1997 at

the Interim Landfill. Under this O&M program, groundwater quality in downgradient wells in the

vicinity of the Former Landfill is monitored for VOCs, metals, radionuclides, and landfill-leachate

parameters.

In March 2002, BNL submitted a Five-Year Evaluation Report for the Former Landfill (P.W.

Grosser, 2002), which assessed trends in groundwater quality over the five-year period following

capping and proposed changes to the sampling program. These changes were implemented in CY03.

In July 2006, BNL issued the Final Five-Year Review Report which discussed all remediation areas

at the site. Review of the Former Landfill Area was included in this report.

1.2 Overview of the Monitoring Program

Groundwater Monitoring

Data quality objectives for each of BNL’s groundwater monitoring programs are presented in the

BNL Environmental Monitoring Plan (BNL, 2009). The design of the data collection network was

optimized as part of the process. Such optimization continues annually as part of the O&M program

and is based on the interpretation of new data as well as historical trends. The primary decision

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identified for the landfill monitoring programs is “Are the controls effectively improving

groundwater quality below and downgradient of the landfill?”

Groundwater samples are collected from monitoring wells positioned upgradient and downgradient

of each landfill area. Analytical data are reviewed, and determinations are made regarding the

effectiveness of landfill controls.

The additional monitoring programs for the landfill areas consists of:

Soil-gas Monitoring. Measurements of methane, Lower Explosive Limit (LEL), and hydrogen

sulfide are taken quarterly from monitoring locations surrounding the landfills to evaluate the

movement of soil-gas from the landfills.

Wooded Wetland Monitoring. Surface waters and sediments in the wooded wetland adjacent to

the eastern boundary of the Current Landfill are sampled every two years to evaluate possible

effects of landfill leachate on Tiger Salamander habitats. Samples were last collected in 2008

and are scheduled for collection again in 2010.

Routine Visual Inspection, Maintenance, and Repair. Monthly inspections are performed to

monitor the structural and/or operational status of the landfill caps, drainage structures, and

environmental monitoring systems.

Leachate Discharge. Visual inspections of the landfills are performed monthly to monitor for

signs of leachate discharge. If observed, samples of the leachate are collected and analyzed.

These activities are discussed in greater detail in Sections 2 through 5 of this report. Section 6

contains the conclusions and recommendations. References are included in Section 7.

2.0 GROUNDWATER MONITORING

2.1 Monitoring Well Networks

2.1.1 Current Landfill

Since February 1996, groundwater quality at the Current Landfill has been monitored using ten

downgradient wells and one background monitoring well. Figure 2 depicts the location of the

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monitoring wells. Figure 3 shows the water table contours for this area in June 2009. The depths of

the screen intervals for the Current Landfill wells are listed below.

Well ID Screen Interval (ft BLS) Screen Zone

087-09* 24–34 Shallow Glacial

087-11 11–21 Shallow Glacial

087-23 25–40 Shallow Glacial

087-24 70–80 Intermediate

087-26 70–80 Intermediate

087-27 5–20 Shallow Glacial

088-109 6–21 Shallow Glacial

088-110 10–25 Shallow Glacial

088-21 5–20 Shallow Glacial

088-22 70–80 Intermediate

088-23 120–130 Deep Glacial

BLS = Below Land Surface

*Background well

Screen zones were determined based on the following characteristics:

 Shallow Zone: typical water table within 10 ft of the screen zone.

 Intermediate Zone: typical water table between 10 ft and 100 ft above the screen zone.

 Deep Zone: typical water table >100 ft above the screen zone.

2.1.2 Former Landfill

Since January 1997, groundwater quality at the Former Landfill area has been monitored using

eight shallow monitoring wells (three background and five downgradient). The locations of the

eight monitoring wells are presented in Figure 4. In addition, six wells, 106-20, 106-21, 106-43,

106-44, 106-45 and 106-64 were moved from the Chemical/Animal Holes project to the Former

Landfill Area project. This move was made since the analyte of interest detected in these wells

(strontium-90) originated from the Former Landfill. The direction of groundwater flow in the

OU I area of the site is generally to the south-southeast. Figure 3 shows the June 2009 water

table

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contours for the area. The screen zones for Former Landfill Area wells are summarized below.

Well ID Screen Interval (ft BLS) Screen Zone

086-42* 65–75 Intermediate

086-72* 41.5–56.5 Shallow Glacial

087-22* 43–53 Shallow Glacial

097-17 29–39 Shallow Glacial

097-64 29–44 Shallow Glacial

097-277 40–55 Shallow Glacial

106-02 55–65 Intermediate

106-30 29–44 Shallow Glacial

106-20 85-95 Intermediate

106-21 55-65 Shallow Glacial

106-43 43-53 Shallow Glacial

106-44 44-54 Shallow Glacial

106-45 44-55 Shallow Glacial

106-64 30-40 Shallow Glacial

BLS = Below Land Surface

*Background well

Screen zones were determined based on the following characteristics:

 Shallow Zone: typical water table within 10 ft of the screen zone.

 Intermediate Zone: typical water table between 10 ft and 100 ft above the screen zone.

2.1.3 Sampling Frequency and Analytical Parameters

Monitoring wells at the Current Landfill were sampled in 2009 during the following periods:

Sampling Event Sampling Dates

Round 1 March 12 - 13

Round 2 June 4

Round 3 August 26

Round 4 December 1

Based on the recommendation in the 2008 Landfill Report, the sampling frequency was reduced

from quarterly to semiannual for all organic and inorganic parameters. The routine sampling

schedule was changed to collect samples during the 2nd and 4th quarters. Since the recommendation

was approved after the 1st quarter round was collected, there were three complete sampling rounds

collected during 2009. As of 2010, only 2 rounds will be collected. As per the schedule listed on

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Table 1, during the August round, only well 088-109 was sampled.

Monitoring wells at the Former Landfill were sampled in 2009 during the following periods:

Sampling Event Sampling Dates

Round 1 June 3

Round 2 December 2-3

As per the schedule listed on Table 1, during the June round, only wells 106-20, 106-21, 106-43,

106-44, 106-45, and 106-64 were sampled.

R&C Formation, Ltd. of Bellmore, New York conducted the groundwater sampling, and Test

America, St. Louis Missouri analyzed the samples. See Table 1 for a summary of analyses

performed, by well and sampling round.

2.1.4 Quality Assurance / Quality Control

The groundwater samples were collected and analyzed in accordance with strict quality assurance,

quality control (QA/QC) requirements as described in the BNL Groundwater Monitoring Program

Quality Assurance Project Plan (QAPP) (BNL, 1999). The analytical results for groundwater

samples collected during 2009 satisfied the data-quality objectives. The sampling team personnel are

responsible for assuring that a master calibration/maintenance log is maintained for each field-

measuring device (e.g., pH conductivity, turbidity meters). The sample coordinator provided a

calibration/maintenance log for equipment supplied to the contractor’s sampling teams.

The analytical results of samples collected for the Current and Former Landfill Area projects

underwent data verification, using BNL standard operating procedures EM-SOP-203, Chemical Data

Verification, and EM-SOP-204, Radiochemical Data Verification. These procedures are designed to

verify the accuracy and/or completeness of analytical data. The data verification process is

implemented to detect the most common analytical problems that affect the quality of the results. To

accomplish this task, QA/QC items such as the following were checked: holding times, matrix

spikes, laboratory and field blanks, and field logs. If items are found that can affect the use and

interpretation of the data, they are either corrected, as in the case of unreadable information on the

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field logs, or the data are “qualified,” as in the case of contamination of the blanks or violations of

the holding time.

Guidance on the collection of QA/QC samples is contained in the QAPP, and in BNL procedure

EM-SOP-200, “Collection and Frequency of Field Quality Control Samples.” The QA/QC samples

collected included trip blanks, field blanks, matrix spike/matrix spike duplicate (MS/MSDs), and

blind duplicates.

Trip blanks were analyzed for aqueous VOCs only. One trip blank was shipped to the analytical

laboratory with each set of samples submitted for VOC analyses. One duplicate sample was

collected from the Current Landfill during the second and fourth quarters, and one duplicate sample

was collected during the quarter from the Former Landfill. No errors were detected in the duplicate

analyses. MS/MSD samples were collected at the same frequency as the duplicates. Chloromethane

and bromomethane were detected in various method and trip blanks during 2009. Sample results

with concentrations of these compounds within five times the associated blank value were declared

non-detect. The amount of qualified data was within acceptable limits and did not adversely impact

the review of the groundwater quality.

2.2 Landfill Groundwater Monitoring Results

This section summarizes the results for VOCs, metals, water-chemistry parameters, and

radionuclides detected for both the Current Landfill and Former Landfill Area in CY09. The

historical trends in concentrations of key contaminants are assessed and shown graphically in

Figures 5 through 12. Summary tables of all 2009 landfill groundwater data are presented in Tables

2 through 10. Detections that exceed groundwater standards are in bold text. The tables include

groundwater standards, laboratory results, minimum detection limits, and laboratory data qualifiers.

The groundwater standards used for evaluating groundwater data include those contained in the

NYSDEC Ambient Water Quality Standards and Guidance Values (June 1998, with addendums

April 2000 and June 2004). Groundwater standards for radiological compounds were supplemented

with New York State Department of Health’s (NYSDOH’s) standards for drinking water when a

NYSDEC groundwater standard was not available. When there were no groundwater standards for a

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radiological compound, a Groundwater Screening Level was used. This value is based on a dose

equivalent of 4 mrem/year and was calculated as 4% of the DOE Derived Concentration Guides

(DCG) (DOE Order 5400.5) for the isotope of concern. These values are listed under the

“groundwater standards” column in the summary tables and annotated where appropriate.

Laboratory results that exceed the lower of the groundwater standards or the Selected Cleanup Goals

listed in the ROD are highlighted in the data summary tables to facilitate review of the information.

The laboratory data qualifiers included in the tables vary for the different analyses. Explanations for

the data qualifiers are included in the notes in each table. Complete 2009 laboratory data reports,

chain of custody forms, and well-sampling logs for both landfills are archived and available upon

request. In addition, analytical results are stored in the BNL Environmental Information

Management System (EIMS) database.

2.2.1 Current Landfill

2.2.1.1 Volatile Organic Compounds (VOCs)

Benzene, and/or chloroethane, were detected above their respective groundwater standards in three

of the 10 downgradient monitoring wells during 2009 (Table 2). 1,1-Dichloroethane was also

detected above the groundwater standard in one well. These VOCs have historically been the

primary groundwater contaminants detected downgradient of the Current Landfill. No other VOCs

were detected above groundwater standards during 2009.

Figure 5 plots the concentration trends of total VOCs (TVOC), benzene, and chloroethane. As

shown, VOCs remained relatively stable at low concentrations. Overall, the trend plots also show a

distinct decrease in VOC concentrations from the high concentrations seen prior to the installation of

the cap. This reflects the positive effects of the capping on the groundwater quality downgradient.

Several chloroethane results were slightly elevated during the 2008 monitoring events in wells 088-

109, 088-110, and 087-11. The chloroethane concentrations for samples collected during 2009 have

returned to previous levels.

Benzene exceeded the 1 μg/L standard in well 087-11. Chloroethane exceeded the 5 μg/L standard in

wells 087-11, 087-23, and 088-109. The maximum chloroethane concentration was 26.9 μg/L in well

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088-109; which is a decrease from the high of 80.8 μg /L in 2008. Benzene was detected at a

maximum of 2 μg/L in well 087-11. There have been no detections of VOCs exceeding groundwater

standards in wells 087-24, 088-22, and 088-23 since 1998. These downgradient wells are screened in

the mid to deep Upper Glacial Aquifer as perimeter wells to monitor the vertical extent of

contamination from the Current Landfill.

2.2.1.2 Water Chemistry Parameters

Groundwater samples near the Current Landfill were analyzed for ammonia, total kjeldahl nitrogen

(TKN) cyanide, sulfate, nitrite, nitrate, total nitrogen, chloride, alkalinity, total dissolved solids

(TDS or residue, nonfilterable), and total suspended solids (TSS or residue, filterable) during 2009

(Table 1). The results are provided in Table 3. Elevated levels of these parameters can be indicative

of the presence of landfill leachate. During 2009, ammonia and chloride were the only water

chemistry parameters detected above standards.

Ammonia was detected above the standard of 2 mg/L, with exceedances in three downgradient wells

(087-11, 087-27, and 088-110) during three sampling events, as shown in Table 3. The highest

concentration of 7.03 mg/L was reported for well 088-110 in June. The levels of ammonia detected

are consistent with historic data.

Chloride was detected in one well above the standard of 250 mg/L. Well 088-21 had a concentration

of chloride at 270 mg/L in March. The concentration decreased each subsequent round to a low of

72.7 mg/L in December. Figure 6 plots these trends. With the exception of well 088-21, the trends

for downgradient wells show the low and stable nature of chloride concentrations in the vicinity of

the Current Landfill.

During 2009, all sulfate concentrations remained below the groundwater standard of 250 mg/L. The

highest sulfate value reported for 2009 was detected in the December sample from monitoring well

088-110 at a concentration of 20.2 mg/L. This is consistent with historic background levels at the

Current Landfill.

Alkalinity, in the form of bicarbonate, is the concentration of anions available to neutralize acid, and

is often used as an indicator of leachate contamination. The alkalinity in background well 087-09

ranged from 17.4 mg/L to 22.9 mg/L during 2009. The highest alkalinity concentration during 2009

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was detected in downgradient, shallow Glacial Aquifer well 087-11, at 192 mg/L in December.

There is no groundwater standard for alkalinity. The concentration trends plotted in Figure 6 show

an overall decrease in alkalinity following the capping of the landfill. Alkalinity levels in the

background well remained stable during this period.

Total dissolved solids and TSS results were similar to those from previous years. TDS and TSS

concentrations in background well 087-09 ranged from 156 mg/L to 194 mg/L, and 7.1 mg/L to 10.4

mg/L, respectively. The maximum concentrations observed in downgradient wells were 565 mg/L

and 70.8 mg/L of TDS and TSS, respectively.

No water chemistry parameters have exceeded groundwater standards in downgradient wells 087-24,

088-22, and 088-23, since 1998. These wells are all screened in the mid to deep-Upper Glacial

Aquifer to monitor the vertical extent of contamination from the Current Landfill. A comparison of

downgradient and background wells shows that leachate continues to be generated from the Current

Landfill, albeit at low concentrations. Decreasing trends in concentration indicate that the capping is

effectively reducing the generation and migration of leachate.

2.2.1.3 Metals

Historically, iron is detected consistently above groundwater standards in the majority of wells

surrounding the landfill. Precipitated iron from the BNL Water Treatment Plant was disposed of at

the Current Landfill during past operations. Concentrations in upgradient well 87-09 are still lower

than in the downgradient wells, suggesting continued leachate migration from the landfill.

During 2009, aluminum, antimony, chromium, iron, nickel, sodium, and thallium in the background

well and antimony, arsenic, iron, manganese, and sodium, in downgradient wells were detected

above their respective groundwater standards (Table 4). Iron in the downgradient wells peaked at a

maximum of 68,900 μg/L in well 088-110 during March. In contrast to background concentrations,

in well 87-09, iron ranged from 2,100 μg/L to 3,860 μg/L.

T:\LTRA\Landfills\2009 Report\Text\2009_text_v1.doc 12

Manganese ranged from 75.2 μg/L to 146 μg/L in background well 087-09, and up to 6,650 μg/L in

the downgradient wells. Background sodium levels ranged from 32,800 to 52,900 μg/L; whereas

downgradient levels reached a high of 181,000 μg/L.

Arsenic was reported above the standard of 10 μg/L in wells 087-23 and 088-110 at a

concentrations of 11.9 μg/L and 23.2 μg/L, respectively. Arsenic detections have historically been

observed at similar levels in Current Landfill wells. Antimony was detected above the standard of 3

μg/L in downgradient wells 087-11, and 088-21 at concentrations ranging from 3.4 μg/L to 7.2

μg/L. Thallium was detected in background well, 087-09, above the standard of 0.5 μg/L ranging

from 0.5 μg/L to 0.8 μg/L. Nickel and chromium were detected above the standard of 100 μg/L and

50 μg/L, respectively, in background well 087-09. However, neither was detected above standards

in any of the downgradient wells.

2.2.1.4 Radionuclides

No radionuclides were detected above groundwater standards during 2009 (Table 5). Strontium-90

(Sr-90), and tritium were the only radionuclides detected during 2009.

Sr-90 was detected in wells 087-09 and 088-21 at concentrations of 1.28 pCi/L and 3.45 pCi/L,

respectively, during December. These are well below the standard of 8 pCi/L.

Tritium was detected significantly below the groundwater standard of 20,000 pCi/L with a maximum

value of 622 pCi/L in well 087-11 (Figure 8). Tritium and Sr-90 concentrations have not exceeded

groundwater standards in any wells since 1998.

2.2.2 Former Landfill

2.2.2.1 VOCs

During 2009, there were no detections of VOCs above groundwater standards in wells in the Former

Landfill Area (Table 6). The compounds consistently found in the Former Landfill Area monitoring

wells include 1,1,1-trichloroethane, and chloroform. Chloroform was reported in several wells

during the year at concentrations ranging from 0.27 μg/L to 2.1 μg/L, well below the groundwater

standard of 7 μg/L. 1,1,1-Trichloroethane detections ranged from 0.3 μg/L to 1.9 μg/L. These

concentrations are well below the standard of 5 μg/L. Figure 9 shows plots of the historical VOC

detections for the Former Landfill Area monitoring wells. During 2009, VOCs were detected at the

T:\LTRA\Landfills\2009 Report\Text\2009_text_v1.doc 13

Former Landfill Area in several wells, but only at trace concentrations, indicating that the cap on the

landfill is operating as intended.

2.2.2.2 Water Chemistry Parameters

Groundwater samples from monitoring wells in the Former Landfill Area were analyzed for sulfate,

nitrite, nitrate, total nitrogen, chloride, alkalinity, TDS (TDS or residue, non-filterable) and TSS

(TSS or residue, filterable). During 2009, none of the of water chemistry parameters exceeded

applicable groundwater standards (Table 7). In general, all of the landfill leachate indicator

parameter concentrations in the downgradient wells were indistinguishable from concentrations in

the upgradient wells in 2009. These trends indicate that the landfill cap is effective.

Sulfate concentrations ranged from 8.6 mg/L to 9.6 mg/L in the background wells, and from 5.7

mg/L to 23.7 mg/L in downgradient wells, significantly below the standard of 250 mg/L.

Nitrogen in the form of nitrate (NO3), and chloride were consistently low with concentrations up to

1.2 mg/L and 38.4 mg/L, respectively in the background wells and concentrations up to 1.2 mg/L

and 12.8 mg/L, respectively in the downgradient wells. The trends plotted in Figure 10 indicate

chloride concentrations are stable over time.

Alkalinity concentrations ranged from 5.5 mg/L to 33.2 mg/L in background wells and from 5 mg/L

to 21.8 mg/L in downgradient wells. The trends plotted in Figure 10 demonstrate that the alkalinity

concentrations in 2009 continue to be at background levels.

TDS concentrations ranged from 32 mg/L to 146 mg/L in the background wells, and from 28 mg/L

to 59 mg/L in the downgradient wells. TSS concentrations were nondetect in the background wells,

and ranged from nondetect to 10.4 mg/L in the downgradient wells.

TKN concentrations ranged from 0.05 mg/L to 0.09 mg/L in the background wells. TKN

concentrations in the downgradient wells ranged from nondetect to 0.16 mg/L.

2.2.2.3 Metals

The sampling results are summarized in Table 8, and concentration trend plots for iron are shown on

Figure 11. Iron was the only metal detected that exceeded the groundwater standards in

T:\LTRA\Landfills\2009 Report\Text\2009_text_v1.doc 14

downgradient wells during 2009. Downgradient well 106-02 had a concentration of 956 μg/L in

December. This is above the standard of 300 μg/L.

2.2.2.4 Pesticides/PCBs

There were no detections of pesticides or polychlorinated biphenyls (PCBs) during 2009. The

sampling results are summarized in Table 9.

2.2.2.5 Radionuclides

Tritium was not detected in any wells during 2009. Strontium-90 was detected in five wells in 2009

below the groundwater standard of 8 pCi/L. Detects ranged from 1.07 pCi/L to 4.62 pCi/L in well

106-44. The sampling results are summarized in Table 10, and concentration trend plots are shown

on Figure 12.

3.0 WOODED WETLAND MONITORING

Sampling at the Wooded Wetland is performed as part of the compliance monitoring for the Current

Landfill. Prior to the capping of the Current Landfill, leachate was periodically observed in the

wetland. The monitoring is focused on metal concentrations in the sediment and surface water to

evaluate potential risks to the local Tiger Salamander population. Samples are collected every two

years. Samples were last collected in 2008 and are scheduled for collection again in 2010.

4.0 SOIL-GAS MONITORING

4.1 Soil-gas Monitoring Networks

Soil-gas readings were collected from wells surrounding the Current Landfill in March, July,

November, and December 2009 and from the Former Landfill in March, July, and December 2009.

For the Former Landfill, the soil-gas monitoring schedule was changed to collect samples during the

2nd and 4th quarters based on a recommendation in the 2008 Landfill Report. Since the

recommendation was approved after the 1st quarter round was collected, there were three complete

soil-gas rounds collected during 2009. Methane, lower explosive limit (LEL), and hydrogen sulfide

were measured using a Landtec GA-90 (Serial # 690). The LEL for methane is 5.3% and the upper

explosive limit (UEL) is 15%.

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4.1.1 Current Landfill

Along the perimeter of the Current Landfill, 58 points were sampled for soil-gas, which includes

four outpost soil-gas well clusters, GSGM-1 to GSGM-4, located along the south side of

Brookhaven Avenue. The sampling points include 12 soil-gas well clusters consisting of three

sampling intervals per cluster, and 11 soil-gas well couplets consisting of two sampling intervals per

couplet. Table 11 describes each soil-gas well. Their locations are illustrated on Figure 13.

4.1.2 Former Landfill Area

Twenty-four sampling points were monitored for the Former Landfill Area. These points include 12

well couplets consisting of two sampling points per couplet. Details of each soil-gas well are given

in Table 11 and their locations shown in Figure 14.

4.1.3 Sampling Frequency

Soil-gas was monitored for each landfill in the following months.

Sampling Event Current Landfill Former Landfill

Round 1 March 2009 March 2009

Round 2 July 2009 July 2009

Round 3 November 2009 December 2009

Round 4 December 2009 None

4.2 Results of Soil-Gas Monitoring

Action levels for soil-gas are specified in 6 NYCRR Part 360-2.17(f) in terms of percent LEL, which

is primarily related to the amount of methane present. This discussion focuses primarily on the

methane levels detected during quarterly monitoring. Hydrogen sulfide is monitored, but has no

regulatory action level. 6 NYCRR Part 360-2.17(f) specifies that active measures to control

decomposition gases are required when the concentration of methane or other explosive gases

exceeds 25 percent of the LEL (or 1.3% methane) in facility structures, or 100 percent (%) of the

LEL (or 5.3% methane) at the site boundary.

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4.2.1 Current Landfill

A total of 23 soil-gas monitoring well clusters are positioned around the Current Landfill (Figure

13). Potential receptors, or areas where methane can accumulate in the vicinity of the Current

Landfill, include the National Weather Service building located 480 ft north northwest of the Current

Landfill on the north side of Brookhaven Avenue. Should methane extend to the south side of

Brookhaven Avenue, active measures will be required to control its migration. The four outpost soil-

gas wells, GSGM-1 to GSGM-4, located along the south side of Brookhaven Avenue, are used to

monitor the northern extent of the migration of landfill gas.

The results of the soil-gas monitoring for 2009 are summarized in Table 12. Appendix A contains

the field notes recorded during the sampling events. Instrument measurements show that methane

continues to be generated in several areas of the landfill. The percent of the LEL is elevated along

the western side and the southeast boundary of the Current Landfill. In addition, one point, SGM-19,

along the northern side of the Current Landfill had elevated LEL readings. These levels have

remained stable since 1996 when monitoring began and the current gas venting system appears to be

controlling gas accumulation. These data are consistent with previous years (see Appendix C).

Outpost wells, GSGM-1 to GSGM-4, located along the south side of Brookhaven Avenue showed no

methane during 2009, indicating that the methane accumulation and migration does not extend to

this area. Should methane extend to these outpost wells on the south side of Brookhaven Avenue,

active measures will be required to control its migration.

Hydrogen sulfide is a product of anaerobic decay in landfills and can produce an odor like rotten

eggs. It is a nuisance, but rarely a toxicity problem. For reference, the National Institute of

Occupational Safety and Health sets an exposure limit of 10 parts per million (ppm) hydrogen

sulfide in the breathing zone for an 8-hour period.

Hydrogen sulfide measurements collected from the soil-gas monitoring wells ranged from 0 ppm to

72 ppm. Well SGM-12A located near the south-eastern section of the landfill, had the highest

hydrogen-sulfide concentration, which was above the 10 ppm exposure limit; however it was taken

from a vapor point screened 2.5 - 7.5 ft below the surface and not from the ambient breathing zone.

Like methane, receptors to hydrogen sulfide are considered to be in areas such as basements where

T:\LTRA\Landfills\2009 Report\Text\2009_text_v1.doc 17

the gas can accumulate. Based upon the readings obtained from the outpost soil-gas wells along the

south side of Brookhaven Avenue (GSGM-1 – GSGM-4), there is no evidence that hydrogen sulfide

is migrating toward the National Weather Service building.

4.2.1.1 Trend in Soil-Gas Data

Appendix C contains the results of methane monitoring for the Current Landfill from 1996 through

2008. Generally the levels of methane and hydrogen sulfide in the wells along the northwest landfill

boundary and southeast corner have remained stable.

4.2.2 Former Landfill Area

A total of 12 soil-gas monitoring well clusters are positioned around the Former Landfill Area.

During 2009, the well clusters were monitored three times. The only existing operating facility

within the immediate vicinity of the Former Landfill Area is Building 670, located approximately

650 feet to the southeast. This building houses the Chemical/Animal Holes Sr-90 groundwater

treatment system. Because this facility does not have a basement, there is minimal potential for

hazardous levels of landfill gases to accumulate in this structure.

Based upon the three sampling events, there was no methane or hydrogen sulfide detected. Table 13

details the 2009 soil-gas monitoring results for the Former Landfill Area. Appendix A contains the

field notes recorded during the sampling events.

4.2.2.1 Trends in Soil-Gas Data

The results of monitoring the Former Landfill Area continue to be consistent with the initial survey

of the methane- gas migration conducted in 1995, during which concentrations between 0% to 0.1%

methane were recorded. Hydrogen-sulfide gas also was measured during this survey. The hydrogen

sulfide results indicate there were no detectable levels during 2009. Appendix D includes the results

of monitoring methane in the Former Landfill Area for 1996 through 2008.

Presently, there is no measured pathway for methane-gas migration, nor do the concentrations

represent an explosive hazard as shown by the nondetect readings on the LEL meter. The age of the

Former Landfill Area and the types of materials disposed of would likely result in the low levels or

absence of methane or hydrogen sulfide.

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5.0 MAINTENANCE AND REPAIR

Monthly site inspections were performed by BNL at the Current and Former Landfill areas to

monitor the structural and/or operational status of the landfill cap, gas vents, drainage structure,

fences and environmental monitoring system (groundwater wells, soil-gas wells) in accordance with

the O&M Manuals. A copy of the inspection reports is included in Appendix B. Maintenance and

repair work completed or required by BNL is discussed below.

5.1 Landfill Cap and Gas Vents

To prevent ruts in the landfills caused by the weight of the lawn mowers during periods of above

normal precipitation, the cutting of the grass is only conducted when optimal soil conditions are

evident. Small cracks in the asphalt road next to the Current Landfill were noted on the inspection

logs. The cracks do not impact the structural integrity of the road. Small animal burrows were noted

during the biannual LTRA inspections. Also small pine seedlings were noted growing around the

edge of the landfill. Maintenance is scheduled for the Spring 2010 which will include removing the

seedlings and filling all remaining animal burrows.

5.2 Drainage Structures

The drainage structures at both the Current and Former Landfill areas were maintained and any

obstructions removed. They were observed to be operational and structurally sound during the site

inspections. From April through June 2009, vegetation was noted growing in the drainage channels

of the Current Landfill and Former Landfill Area. A combination of weed whacking and herbicide

was used and the vegetation was not noted in subsequent inspections.

5.3 Environmental Monitoring System

The monitoring wells and soil-gas monitoring wells associated with the landfills required no

significant maintenance. During 2009, the groundwater monitoring wells were repainted to minimize

the affects of weather on the steel casings. Access to the soil-gas monitoring wells was cleared via

mechanical weed whacking

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5.4 Related Structures

During routine inspections of both landfills it was noted that access to the landfill caps required

walking on the unstable rip rap. Therefore, wooden staircases were installed in May 2009 at the

northeast corners of both the Current and Former Landfills to allow safer access to the cap areas.

The footings on the cap side of the stairs were secured to cement slabs placed on top of the cap.

6.0 CONCLUSIONS AND RECOMMENDATIONS

6.1 Groundwater Monitoring

6.1.1 Conclusions for the Current Landfill

 VOCs such as benzene, and/or chloroethane continue to be detected in downgradient wells

087-11, 087-23, and 088-109 at concentrations above groundwater standards. The maximum

chloroethane concentration was 26.9 μg/L in well 088-109. Benzene was detected at a

maximum of 2 μg/L in well 088-11. During 2009, TVOC concentrations in these three wells

ranged up to 28.7 μg/L indicating that low level VOCs continue to emanate from the landfill.

However, an analysis of the trends of VOCs indicated the concentrations are stable to

decreasing.

 Landfill water chemistry parameters and metals evaluated during the year suggest that

leachate continues to emanate from the landfill, but at low levels.

 Tritium and Sr-90 continue to be detected in the wells downgradient of the Current Landfill,

but at concentrations well below groundwater standards. These concentrations were

consistent with historical observations.

 Since 1998, there have been no detections of VOCs, water chemistry parameters or

radionuclides exceeding groundwater standards in wells 087-24, 088-22, and 088-23. These

wells are all screened in the mid-to deep-Upper Glacial Aquifer to monitor the vertical extent

of contamination from the Current Landfill.

 Although low levels of contaminants continue to be detected, the landfill controls are

effective as evidenced by the improving quality of groundwater downgradient of the landfill.

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6.1.2 Recommendations for the Current Landfill

The groundwater monitoring well network is adequate at this time. No changes to the monitoring

frequency are recommended.

6.1.3 Conclusions for the Former Landfill Area

 The Former Landfill Area is not a significant source of VOC contamination. No VOCs were

detected above groundwater standards in 2009. VOC concentrations in the downgradient

wells were at or near the minimum detectable limits.

 Landfill-leachate indicators in downgradient wells were detected at concentrations

approximating those in the background monitoring wells, indicating that leachate generation

is minimal to nonexistent.

 The Former Landfill Area no longer appears to be a source of Sr-90 contamination. Only

trace amounts of Sr-90 were detected near the Former Landfill Area (Well 097-64). The Sr-

90 detected in wells 106-43, 106-44, 106-45 and 106-64 has been decreasing with time and

is currently not above groundwater standards.

 The implemented landfill controls are effective, as evidenced by the improving quality of

groundwater downgradient of the landfill.

6.1.4 Recommendations for the Former Landfill Area

The groundwater monitoring well network is adequate at this time. No changes to the monitoring

frequency are recommended.

6.2 Soil-Gas Monitoring

6.2.1 Conclusions for the Current Landfill

Methane and hydrogen sulfide levels in wells located along the west landfill boundary and southeast

corner have remained stable and have not shown any significant increases or decreases over time.

No gas migration has been observed this year at the outpost soil-gas wells along Brookhaven

Avenue.

T:\LTRA\Landfills\2009 Report\Text\2009_text_v1.doc 21

6.2.2 Recommendations for the Current Landfill

The soil-gas monitoring program is adequate at this time, since methane gas is still being produced

and leachate is continuing to discharge from the landfill.

6.2.3 Conclusions for the Former Landfill Area

Methane and hydrogen sulfide levels at the Former Landfill Area continue to show little to no

landfill gas.

6.2.4 Recommendations for the Former Landfill Area

The soil-gas monitoring program is adequate at this time. No changes to the monitoring frequency

are recommended.

6.3 Maintenance and Repair

Maintenance of the landfill caps will continue in accordance with the O&M requirements.

6.3.1 Current Landfill

Monthly inspections and maintenance will continue in accordance with the O&M requirements. To

prevent ruts in the landfills caused by the weight of the lawn mowers and moist surface conditions,

the cutting of the grass is only conducted when optimal soil conditions are evident. Access to the

soil-gas monitoring wells are cleared via mechanical weed whacking.

6.3.2 Former Landfill Area

Monthly inspections and maintenance will continue in accordance with the O&M requirements. To

prevent ruts in the landfills caused by the weight of the lawn mowers during periods of above normal

precipitation, the cutting of the grass is only conducted when optimal soil conditions are evident.

Access to the soil-gas monitoring wells are cleared via mechanical weed whacking.

7.0 REFERENCES

Brookhaven National Laboratory, 1999, BNL Groundwater Monitoring Program Quality

Assurance/Quality Control Project Plan, BNL, August 1999.

Brookhaven National Laboratory, 2001a, Groundwater Monitoring Data Quality Objectives Project,

BNL, September 2001.

T:\LTRA\Landfills\2009 Report\Text\2009_text_v1.doc 22

Brookhaven National Laboratory, 2001b, Current Landfill Area Five-Year Evaluation Report. BNL

Environmental Services Division, October 29,2001.

Brookhaven National Laboratory. 2009. Environmental Monitoring Plan CY 2009 Update.

Brookhaven National Laboratory, Upton, NY. January 2009.

CDM Federal, 1995a, Final Design Specifications for the Current Landfill, Brookhaven National

Laboratory, CDM Federal Programs Corporation, February 1995.

CDM Federal, 1995b, Engineering Evaluation/Cost Analysis for Groundwater: Operable Unit I,

Brookhaven National Laboratory, CDM Federal Programs Corporation, September 1995.

CDM Federal, 1995c, Final Closure/Design Report for the Former Landfill Area, Brookhaven

National Laboratory, CDM Federal Programs Corporation, November 1995.

CDM Federal, 1996a, Final Operations and Maintenance Manual for the Current Landfill,

Brookhaven National Laboratory, CDM Federal Programs Corporation, March 1996.

CDM Federal, 1996b, Final Construction Certification Report for Current Landfill Capping,

Brookhaven National Laboratory, CDM Federal Programs Corporation, May 1996.

CDM Federal, 1996c, Final Operations and Maintenance Manual for the Former Landfill Area,

Brookhaven National Laboratory, CDM Federal Programs Corporation, May 1996.

CDM Federal, 1997, Environmental Monitoring Report for Current Landfill, Brookhaven National

Laboratory, CDM Federal Programs Corporation January 1997.

CDM Federal, 1999, Focused Ecological Risk Assessment, Appendix L., Final Feasibility Study

Report OU I, CDM Federal Programs Corporation March 31, 1999.

EM-SOP-200, Collection and Frequency of Field Quality Control Samples, Brookhaven National

Laboratory, Environmental Monitoring Standard Operating Procedure

EM-SOP-203, Chemical Data Verification, Brookhaven National Laboratory Environmental

Monitoring, Standard Operating Procedure.

EM-SOP-204, Radiochemical Data Verification, Brookhaven National Laboratory Environmental

Monitoring, Standard Operating Procedure

6NYCRR Part 360, Solid Waste Management Facilities, New York State Department of

Environmental Conservation, Division of Solid & Hazardous Waste.

PW Grosser Consulting, 1997, Construction Certification Report for the Interim Landfill Capping,

Brookhaven National Laboratory, October 1997

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PW Grosser Consulting, 2001, Current Landfill Area Five-Year Evaluation Report, October 29,

2001.

PW Grosser Consulting, 2002, Former Landfill Area Five-Year Evaluation Report, March 8, 2002.

Roy F. Weston, 1997, Final Construction Certification Report for Former Landfill Capping,

Brookhaven National Laboratory, March 1997.

OER, 1997, Statement of Work For Hazardous Chemical and Radiochemical Data Validation,

Brookhaven National Laboratory, April, 1997.

United States Department of Energy Order 5400.5, Radiation Protection of the Public and the

Environment. Washington D.C., February 8, 1990.

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Appendix A

Soil-gas Sampling Field Notes

T:\LTRA\Landfills\2009 Report\Text\2009_text_v1.doc 25

Appendix B

Monthly Landfill Site Inspection Forms

T:\LTRA\Landfills\2009 Report\Text\2009_text_v1.doc 26

Appendix C

Historical Soil-gas Monitoring Data

Table 1. Analytical Requirements for Groundwater Samples

Well ID Project 1 Decision Subunit

EPA 524.2 VOCs

Pesticides Method 608

PCBs Method 608

TSS/TDS

Sufates/Chloride/Alkalinity

TK Nitrogen

Total Nitrogen

Nitrates

Nitrites

Ammonia

TAL Metals

Cyanide

EPA 900 Gross Alpha/Beta

EPA 901 Gamma Spec

EPA 906 Tritium

EPA 905 Sr 90

Blind Duplicate/MS/MSD

Frequency (events/year)

087-09 CLF Background X

Xbf Xbf Xbf Xbf Xbf Xbf Xbf Xbf Xbf XaXaXa3bf

087-11 CLF Downgradient X

Xbf Xbf Xbf Xbf Xbf Xbf Xbf Xbf Xbf XaXaXa3bf

087-23 CLF Downgradient X

Xbf Xbf Xbf Xbf Xbf Xbf Xbf Xbf Xbf XaXaXa3bf

087-24 CLF Downgradient XaXbf Xbf Xbf Xbf Xbf Xbf Xbf Xbf Xbf XaXaXa3bf

087-26 CLF Downgradient X

Xbf Xbf Xbf Xbf Xbf Xbf Xbf Xbf Xbf XaXaXa3bf

087-27 CLF Downgradient X

Xbf Xbf Xbf Xbf Xbf Xbf Xbf Xbf Xbf XaXaXa3bf

088-109 CLF Downgradient XXbf Xbf Xbf Xbf Xbf Xbf Xbf Xbf Xbf XaXaXaX4

088-110 CLF Downgradient X

Xbf Xbf Xbf Xbf Xbf Xbf Xbf Xbf Xbf XaXaXa3bf

088-21 CLF Downgradient X

Xbf Xbf Xbf Xbf Xbf Xbf Xbf Xbf Xbf XaXaXa3bf

088-22 CLF Downgradient XaXbf Xbf Xbf Xbf Xbf Xbf Xbf Xbf Xbf XaXaXa3bf

088-23 CLF Downgradient XaXbf Xbf Xbf Xbf Xbf Xbf Xbf Xbf Xbf XaXaXa3bf

086-42 FLF Background XaXaXaXaXaXaXaXaXaXaXaXaXaXaXXa1a

086-72 FLF Background XaXaXaXaXaXaXaXaXaXaXaXaXaXaXaXa1a

087-22 FLF Background XaXaXaXaXaXaXaXaXaXaXaXaXaXaXaXa1a

097-17 FLF Downgradient XaXaXaXaXaXaXaXaXaXaXaXaXaXaXaXa1a

097-277 FLF Downgradient XaXaXaXaXaXaXaXaXaXaXaXaXaXaXaXa1a

097-64 FLF Downgradient XaXaXaXaXaXaXaXaXaXaXaXaXaXaXaXa1a

106-02 FLF Downgradient XaXaXaXaXaXaXaXaXaXaXaXaXaXaXaXa1a

106-30 FLF Downgradient XaXaXaXaXaXaXaXaXaXaXaXaXaXaXaXaX1a

106-20 FLF Downgradient Xf 2f

106-21 FLF Downgradient Xf 2f

106-43 FLF Downgradient Xf 2f

106-44 FLF Downgradient Xf 2f

106-45 FLF Downgradient Xf 2f

106-64 FLF Downgradient Xf 2f

NOTES:

a: Collect in 4th Quarter only.

b: Collect 1st Quarter only.

3/16/2010

Table 1. Analytical Requirements for Groundwater Samples

Well ID Project 1 Decision Subunit

EPA 524.2 VOCs

Pesticides Method 608

PCBs Method 608

TSS/TDS

Sufates/Chloride/Alkalinity

TK Nitrogen

Total Nitrogen

Nitrates

Nitrites

Ammonia

TAL Metals

Cyanide

EPA 900 Gross Alpha/Beta

EPA 901 Gamma Spec

EPA 906 Tritium

EPA 905 Sr 90

Blind Duplicate/MS/MSD

Frequency (events/year)

f: Collect in 2nd and 4th Quarters.

3/16/2010

Table 2. Current Landfill - Summary of 2009 VOC Data

Groundwater

Standards

Analtye (ug/L)

1,1,1,2-Tetrachloroethane 5 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

1,1,1-Trichloroethane 5 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

1,1,2,2-Tetrachloroethane 5 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

1,1,2-Trichloroethane 1 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

1,1-Dichloroethane 5 0.5 U 0.5 U 0.5 U 0.5 U 0.297 J 0.303 J 0.5 U 0.5 U

1,1-Dichloroethylene 5 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

1,1-Dichloropropene 5 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

1,2,3-Trichlorobenzene 5 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

1,2,3-Trichloropropane 0.04 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

1,2,4-Trichlorobenzene 5 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

1,2-Dichloroethane 0.6 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

1,2-Dichloropropane 1 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

1,3-Dichloropropane 5 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

2,2-Dichloropropane 5 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

Benzene 1 0.5 U 0.5 U 1.22 1.99 1.07 0.971 0.5 U 0.5 U

Benzene, 1,2,4-trimethyl 5 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

Benzene, 1,3,5-trimethyl- 5 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

Benzene, 1-methylethyl- -- 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

Bromobenzene 5 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

Bromodichloromethane 50 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

Bromoform 50 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

Carbon tetrachloride 5 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

Chlorobenzene 5 0.5 U 0.5 U 0.276 J 0.447 J 0.833 0.995 0.5 U 0.5 U

Chlorobromomethane 5 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

Chloroethane 5 0.5 U 0.5 U 3.39 5.19 4.64 5.21 0.5 U 0.5 U

Chloroform 7 0.5 U 0.198 J 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

cis-1,2-Dichloroethylene 5 0.5 U 0.5 U 0.145 J 0.195 J 0.5 U 0.5 U 0.5 U 0.5 U

cis-1,3-Dichloropropene 0.4 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

Cymene 5 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

DBCP 0.04 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

Dibromochloromethane 5 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

Dibromomethane 5 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

Dichlorodifluoromethane 5 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

EDB 0.05 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

Ethene, 1,2-dichloro-, (E)- 5 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

Ethylbenzene 5 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

Hexachlorobutadiene 0.5 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

m-Dichlorobenzene 3 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

m/p xylene 5 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

Methyl bromide 5 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

Methyl chloride 5 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

Methyl tert-butyl ether 10 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

Methylene chloride 5 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

n-Butylbenzene 5 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

n-Propylbenzene 5 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

Naphthalene 10 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

o-Chlorotoluene 5 0.5 U 0.5 U 0.5 U 0.5 U 0.321 J 0.484 J 0.5 U 0.5 U

o-Dichlorobenzene 3 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

o-Xylene 5 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

p-Chlorotoluene 5 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

p-Dichlorobenzene 3 0.5 U 0.5 U 0.367 J 0.469 J 0.361 J 0.483 J 0.5 U 0.5 U

sec-Butylbenzene 5 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

Styrene 5 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

tert-Butylbenzene 5 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

Tetrachloroethylene 5 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

Toluene 5 0.5 U 0.5 U 0.5 U 0.111 J 0.5 U 0.5 U 0.5 U 0.5 U

trans-1,3-Dichloropropene 0.4 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

Trichloroethylene 5 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

Trichlorofluoromethane 5 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

Vinyl chloride 2 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

524.2 TVOC -- 0 0.198 5.398 8.402 7.522 8.446 0 0

U - Not Detected

J - Estimated Value

(ug/L) (ug/L) (ug/L) (ug/L)(ug/L) (ug/L) (ug/L) (ug/L)

6/4/2009 12/1/2009 6/4/2009 12/1/2009 6/4/2009 12/1/2009 12/1/2009 6/4/2009

087-23 087-23 087-24 087-26087-09 087-09 087-11 087-11

Page 1 of 3

Table 2. Current Landfill - Summary of 2009 VOC Data

Groundwater

Standards

Analtye (ug/L)

1,1,1,2-Tetrachloroethane 5

1,1,1-Trichloroethane 5

1,1,2,2-Tetrachloroethane 5

1,1,2-Trichloroethane 1

1,1-Dichloroethane 5

1,1-Dichloroethylene 5

1,1-Dichloropropene 5

1,2,3-Trichlorobenzene 5

1,2,3-Trichloropropane 0.04

1,2,4-Trichlorobenzene 5

1,2-Dichloroethane 0.6

1,2-Dichloropropane 1

1,3-Dichloropropane 5

2,2-Dichloropropane 5

Benzene 1

Benzene, 1,2,4-trimethyl 5

Benzene, 1,3,5-trimethyl- 5

Benzene, 1-methylethyl- --

Bromobenzene 5

Bromodichloromethane 50

Bromoform 50

Carbon tetrachloride 5

Chlorobenzene 5

Chlorobromomethane 5

Chloroethane 5

Chloroform 7

cis-1,2-Dichloroethylene 5

cis-1,3-Dichloropropene 0.4

Cymene 5

DBCP 0.04

Dibromochloromethane 5

Dibromomethane 5

Dichlorodifluoromethane 5

EDB 0.05

Ethene, 1,2-dichloro-, (E)- 5

Ethylbenzene 5

Hexachlorobutadiene 0.5

m-Dichlorobenzene 3

m/p xylene 5

Methyl bromide 5

Methyl chloride 5

Methyl tert-butyl ether 10

Methylene chloride 5

n-Butylbenzene 5

n-Propylbenzene 5

Naphthalene 10

o-Chlorotoluene 5

o-Dichlorobenzene 3

o-Xylene 5

p-Chlorotoluene 5

p-Dichlorobenzene 3

sec-Butylbenzene 5

Styrene 5

tert-Butylbenzene 5

Tetrachloroethylene 5

Toluene 5

trans-1,3-Dichloropropene 0.4

Trichloroethylene 5

Trichlorofluoromethane 5

Vinyl chloride 2

524.2 TVOC --

U - Not Detected

J - Estimated Value

0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

0.5 U 0.5 U 0.5 U 1.76 1.31 0.811 0.391 J 0.661

0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

0.5 U 0.421 J 0.822 0.107 J 0.177 J 0.5 U 0.121 J 0.43 J

0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

0.5 U 0.193 J 1.49 0.5 U 0.5 U 0.5 U 0.5 U 0.104 J

0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

0.5 U 1.1 1.58 26.1 26.9 13.2 9.86 1.98

0.5 U 0.272 J 0.5 U 0.288 J 0.27 J 0.5 U 0.257 J 0.5 U

0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.116 J

0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

0.5 U 0.5 U 0.261 J 0.5 U 0.5 U 0.5 U 0.5 U 0.234 J

0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

0 1.986 4.153 28.25

28.657 14.011 10.629 3.525

(ug/L) (ug/L) (ug/L) (ug/L)(ug/L) (ug/L) (ug/L) (ug/L) 8/26/2009 12/1/2009 6/4/20096/4/2009 12/1/2009 3/12/2009 6/4/200912/1/2009 088-109 088-109 088-109 088-110087-26 087-27 087-27 088-109

Page 2 of 3

Table 2. Current Landfill - Summary of 2009 VOC Data

Groundwater

Standards

Analtye (ug/L)

1,1,1,2-Tetrachloroethane 5

1,1,1-Trichloroethane 5

1,1,2,2-Tetrachloroethane 5

1,1,2-Trichloroethane 1

1,1-Dichloroethane 5

1,1-Dichloroethylene 5

1,1-Dichloropropene 5

1,2,3-Trichlorobenzene 5

1,2,3-Trichloropropane 0.04

1,2,4-Trichlorobenzene 5

1,2-Dichloroethane 0.6

1,2-Dichloropropane 1

1,3-Dichloropropane 5

2,2-Dichloropropane 5

Benzene 1

Benzene, 1,2,4-trimethyl 5

Benzene, 1,3,5-trimethyl- 5

Benzene, 1-methylethyl- --

Bromobenzene 5

Bromodichloromethane 50

Bromoform 50

Carbon tetrachloride 5

Chlorobenzene 5

Chlorobromomethane 5

Chloroethane 5

Chloroform 7

cis-1,2-Dichloroethylene 5

cis-1,3-Dichloropropene 0.4

Cymene 5

DBCP 0.04

Dibromochloromethane 5

Dibromomethane 5

Dichlorodifluoromethane 5

EDB 0.05

Ethene, 1,2-dichloro-, (E)- 5

Ethylbenzene 5

Hexachlorobutadiene 0.5

m-Dichlorobenzene 3

m/p xylene 5

Methyl bromide 5

Methyl chloride 5

Methyl tert-butyl ether 10

Methylene chloride 5

n-Butylbenzene 5

n-Propylbenzene 5

Naphthalene 10

o-Chlorotoluene 5

o-Dichlorobenzene 3

o-Xylene 5

p-Chlorotoluene 5

p-Dichlorobenzene 3

sec-Butylbenzene 5

Styrene 5

tert-Butylbenzene 5

Tetrachloroethylene 5

Toluene 5

trans-1,3-Dichloropropene 0.4

Trichloroethylene 5

Trichlorofluoromethane 5

Vinyl chloride 2

524.2 TVOC --

U - Not Detected

J - Estimated Value

0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

0.865 0.5 U 0.5 U 0.5 U 0.5 U

0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

0.536 0.5 U 0.5 U 0.5 U 0.5 U

0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

0.34 J 0.5 U 0.5 U 0.5 U 0.5 U

0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

3.1 0.5 U 0.5 U 0.5 U 0.5 U

0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

0.514 0.5 U 0.5 U 0.5 U 0.5 U

0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

0.326 J 0.5 U 0.5 U 0.5 U 0.5 U

0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

5.681 0 0 0 0

(ug/L)

(ug/L) (ug/L) (ug/L) (ug/L)

6/4/2009 12/1/2009 12/1/2009 12/1/200912/1/2009 088-23088-110 088-21 088-21 088-22

Page 3 of 3

Table 3. Current Landfill - Summary of 2009 Water Chemistry Data

Groundwater Standards

naltye (mg/L)

Alkalinity (as CaCO3) -- 19.2 22.9 17.4 86.7 131 192 32.2 115

Ammonia (as N) 2 0.03 U 0.016 U 0.016 U 4.2 3.15 3.1 0.46 0.53

Chloride 250 56.9 49.7 90.7 15.2 16.3 18.5 12.7 7.58

Cyanide 0.2 0.002 U 0.002 U 0.002 U 0.002 U 0.0017 U 0.002 U 0.002 U 0.0017 U

Nitrate (as N) 10 0.696 0.692 0.403 0.033 U 0.033 U 0.033 U 0.033 U 0.033 U

Nitrite (as N) 1 0.033 U 0.033 U 0.033 U 0.033 U 0.033 U 0.033 U 0.033 U 0.033 U

Nitrite + Nitrate-N 10 0.83 0.152 0.386 0.01 U 0.0323 J 0.081 J 0.01 U 0.0326 J

Nitrogen -- 0.909 0.348 0.401 4.12 2.63 3.66 0.615 1.22

Sulfate 250 17.6 12 10.9 2.15 J 3.92 J 2.4 J 10.3 5.54

TDS -- 161 156 194 153 173 194 81 144

Total Kjeldahl Nitrogen -- 0.079 J 0.196 0.033 U 4.11 2.6 3.57 0.615 1.19

TSS -- 7.05 10.4 8 25 18.3 70.8 5.9 14.7

U - Not Detected

J - Estimated Value

(mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L) (mg/L)

3/12/2009 6/4/2009 12/1/2009 3/12/2009 6/4/2009 12/1/2009 3/12/2009 6/4/2009

087-11 087-11 087-23 087-23087-09 087-09 087-09 087-11

Page 1 of 4

Table 3. Current Landfill - Summary of 2009 Water Chemistry Data

Groundwater Standards

naltye (mg/L)

Alkalinity (as CaCO3) --

Ammonia (as N) 2

Chloride 250

Cyanide 0.2

Nitrate (as N) 10

Nitrite (as N) 1

Nitrite + Nitrate-N 10

Nitrogen --

Sulfate 250

TDS --

Total Kjeldahl Nitrogen --

TSS --

U - Not Detected

J - Estimated Value

114 16.6 18.4 17.7 17.1 17.4 145 112

0.322 0.016 U 0.016 U 0.03 U 0.016 U 0.016 U 3.7 2.41

9.22 17.9 18.1 15.7 17.2 19 23.7 26.3

0.002 U 0.002 U 0.002 U 0.0015 U 0.0017 U 0.002 U 0.0015 U 0.0017 U

0.033 U 0.472 0.492 0.438 0.453 0.508 0.033 U 0.033 U

0.033 U 0.033 U 0.033 U 0.0365 J 0.0531 J 0.033 U 0.0349 J 0.033 U

0.08 J 0.478 0.487 0.475 0.456 0.496 0.01 U 0.0346 J

0.548 0.478 0.622 0.475 0.456 0.641 3.26 3.14

6.55 12.4 12.5 11.9 12.2 12.3 6.53 12.3

141 73 74 76 78 73 222 180

0.468 0.033 U 0.135 0.029 U 0.033 U 0.145 3.26 3.1

8.6 0.69 J 1.14 U 0.57 U 3.45 1.14 U 27.6 17.1

(mg/L) (mg/L) (mg/L) (mg/L)(mg/L) (mg/L) (mg/L) (mg/L) 6/4/2009 12/1/2009 3/12/2009 6/4/200912/1/2009 6/4/2009 12/1/2009 3/12/2009 087-26 087-26 087-27 087-27087-23 087-24 087-24 087-26

Page 2 of 4

Table 3. Current Landfill - Summary of 2009 Water Chemistry Data

Groundwater Standards

naltye (mg/L)

Alkalinity (as CaCO3) --

Ammonia (as N) 2

Chloride 250

Cyanide 0.2

Nitrate (as N) 10

Nitrite (as N) 1

Nitrite + Nitrate-N 10

Nitrogen --

Sulfate 250

TDS --

Total Kjeldahl Nitrogen --

TSS --

U - Not Detected

J - Estimated Value

163 52.4 36.4 78.9 105 124 133 16.6

1.5 1.59 0.836 0.891 3 7.03 2.11 0.03 U

26.2 12.6 10.9 13.9 30.8 26.4 35.4 270

0.002 U 0.0015 U 0.002 U 0.002 U 0.0015 U 0.0017 U 0.0017 U 0.002 U

0.033 U 0.0754 J 0.033 U 0.033 JU 0.033 U 0.033 U 0.033 JU 0.291

0.033 U 0.033 U 0.033 U 0.033 JU 0.0372 J 0.0528 J 0.033 JU 0.033 U

0.073 J 0.05 U 0.05 U 0.065 J 0.01 U 0.0345 J 0.0745 J 0.295

1.87 1.61 1.02 1.23 2.86 6.28 2.49 0.442

14.2 14.2 17.7 12.7 13.5 14.8 20.2 2.99 J

211 106 82 136 220 241 222 565

1.8 1.59 0.996 1.17 2.86 6.25 2.41 0.147

17.2 1.8 J 0.875 J 3 J 42.2 27.8 12 6

(mg/L) (mg/L) (mg/L) (mg/L)(mg/L) (mg/L) (mg/L) (mg/L) 3/12/2009 6/4/2009 12/1/2009 3/12/200912/1/2009 3/12/2009 6/4/2009 12/1/2009 088-110 088-110 088-110 088-21087-27 088-109 088-109 088-109

Page 3 of 4

Table 3. Current Landfill - Summary of 2009 Water Chemistry Data

Groundwater Standards

naltye (mg/L)

Alkalinity (as CaCO3) --

Ammonia (as N) 2

Chloride 250

Cyanide 0.2

Nitrate (as N) 10

Nitrite (as N) 1

Nitrite + Nitrate-N 10

Nitrogen --

Sulfate 250

TDS --

Total Kjeldahl Nitrogen --

TSS --

U - Not Detected

J - Estimated Value

14.5 23.8 14.5 15.4 27 22.3

0.048 J 0.021 J 0.016 U 0.016 U 0.04 U 0.016 J

162 72.7 17.3 17.1 16 16.1

0.002 U 0.002 U 0.0017 U 0.002 U 0.0017 U 0.0017 U

0.162 0.281 J 0.465 0.486 J 0.033 U 0.033 JU

0.033 U 0.033 JU 0.0538 J 0.033 JU 0.0549 J 0.033 JU

0.116 0.257 0.432 0.495 0.0113 J 0.0525 J

0.122 0.269 0.432 0.496 0.033 U 0.204 J

3.39 J 4.05 J 11.4 11.5 11.2 10.8

351 172 69 62 84 67

0.033 U 0.033 U 0.033 U 0.033 U 0.033 U 0.151

6.99 1.14 U 10.1 2.4 J 3.41 9.6

(mg/L) (mg/L)(mg/L) (mg/L) (mg/L) (mg/L) 6/4/2009 12/1/20096/4/2009 12/1/2009 6/4/2009 12/1/2009 088-23 088-23088-21 088-21 088-22 088-22

Page 4 of 4

Table 4. Current Landfill - Summary of 2009 Metals Data

Groundwater Standards

Analtye (ug/L)

Aluminum 200 941 336 240 164 B 76.4 B 69.4 B 68 U 68 U 68 U 68 U

Antimony 33.4 B7.96 B3U3.4 B7.19 B3U3U3U3U3U

Arsenic 10 1.5 U 4.24 B 2.32 B 5.4 5.46 6.26 9.7 11.9 11.8 1.5 U

Barium 1000 45.9 B 41.5 B 49.6 B 35.3 B 23.7 B 35.5 B 23.1 B 30.4 B 33.2 B 9.98 B

Beryllium 3 1U1U1U1U1U1U1U1U1U1U

Cadmium 5 1U1U1U1U1U1U1U1U1U1U

Calcium -- 10700 9840 8780 18000 15200 19700 4080 B 4940 B 6710 5590

Chromium 50 794 607 515 2 U 2 U 2.18 B 2 U 2 U 2.99 B 2 U

Cobalt -- 2.9 B 3.13 B 3.42 B 1 U 1 U 1 U 2 B 3.12 B 2.9 B 1 U

Copper 200 13.4 B 13.2 B 11.5 B 3 U 3 U 3 U 3 U 3 U 3 U 3 U

Iron 300 3860 3440 2100 59100 53500 65000 32900 61400 55800 25 U

Lead 15* 0.78 B 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

Magnesium 35000 4420 B 4180 B 4200 B 4100 B 3200 B 4750 B 1450 B 1430 B 1890 B 3650 B

Manganese 300 84.6 146 75.2 1120 943 1250 3940 6120 6650 2U

Mercury 0.7 0.067 U 0.067 U 0.066 U 0.067 U 0.067 U 0.066 U 0.067 U 0.067 U 0.066 U 0.067 U

Nickel 100 413 405 454 1 U 1 U 1.5 U 1 U 1 U 1.5 U 1 U

Potassium -- 1430 B 1870 B 1280 B 5780 3640 B 5670 1000 B 1150 B 1140 B 1130 B

Selenium 10 1U1U1U1U1U1U1U1U1U1U

Silver 50 1 U 1 U 1 U 1 U 1.46 B 1.27 B 1 U 3 B 2.53 B 1 U

Sodium 20000 43900 32800 52900 10700 8750 12700 9360 5190 6730 11100

Thallium 0.5 0.58 B0.531 B0.761 B 0.3 U 0.3 U 0.305 B 0.3 U 0.3 U 0.3 U 0.3 U

Vanadium -- 3.8 B 2.57 B 2.1 B 1.1 B 1 U 1 U 1 U 1 U 1 U 1 U

Zinc 2000 6.4 B 5.54 B 3.3 U 7.3 B 4.2 B 3.3 U 9.6 B 6.58 B 5.52 B 2 U

U - Not Detected

B - Value between contract reporting

limit and instrument detection limit.

* Listed value is the Selected Cleanup

Goal stated in the ROD.

(ug/L) (ug/L)(ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) (ug/L) 12/1/2009 6/4/20093/12/2009 6/4/2009 12/1/2009 3/12/2009 6/4/2009 12/1/2009 3/12/2009 6/4/2009 087-23 087-24087-11 087-11 087-23 087-23087-09 087-09 087-09 087-11

Page 1 of 3

Table 4. Current Landfill - Summary of 2009 Metals Data

Groundwater Standards

Analtye (ug/L)

Aluminum 200

Antimony 3

Arsenic 10

Barium 1000

Beryllium 3

Cadmium 5

Calcium --

Chromium 50

Cobalt --

Copper 200

Iron 300

Lead 15*

Magnesium 35000

Manganese 300

Mercury 0.7

Nickel 100

Potassium --

Selenium 10

Silver 50

Sodium 20000

Thallium 0.5

Vanadium --

Zinc 2000

U - Not Detected

B - Value between contract reporting

limit and instrument detection limit.

* Listed value is the Selected Cleanup

Goal stated in the ROD.

68 U 68 U 68 U 68 U 189 B 68 U 138 B 68 U 68 U 68 U 68 U 68 U 68 U 181 B

3U3U3U3U3U3U3U3U3U3U3U3U3U4.1 B

1.6 U 1.5 U 2.41 B 1.88 B 10.5 5.55 9.68 1.5 U 1.5 U 2.33 B 23.2 15 11.3 1.5 U

10.7 B 21.9 B 22.1 B 22.5 B 57.8 B 41.6 B 41.8 B 38.4 B 24 B 35.4 B 54.4 B 37.7 B 39.9 B 64.6 B

1U1U1U1U1U1U1U1U1U1U1U1U1U 1U

5920 5650 5540 5920 39700 26700 24800 19500 13600 17700 25900 19200 18800 22700

1 U 2 U 2 U 1 U 2 U 2 U 1.28 B 2 U 2 U 1 U 2 U 2 U 1.19 B 2 U

1.38 B 1.5 B 1.15 B 1.37 B 3.6 B 2.85 B 3.3 B 1 U 1 U 1 U 5.9 B 4.36 B 4.6 B 1 U

3 U 4.2 B 3.94 B 3 U 3 U 3 U 3 U 3 U 3 U 3 U 3 U 3 U 3 U 3 U

30 U 126 2810 185 63700 29000 45800 2160 800 7040 68900 55200 49400 3880

0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

4080 B 3760 B 3720 B 4010 B 9120 6550 5670 5780 5030 4710 B 7050 5140 5530 10400

2 U 2 U 10.7 B 2.11 B 3100 1180 1800 563 181 411 3300 2680 2230 143

0.066 U 0.067 U 0.067 U 0.066 U 0.067 U 0.067 U 0.066 U 0.067 U 0.067 U 0.066 U 0.067 U 0.067 U 0.066 U 0.067 U

1.5 U 1 U 1 U 1.5 U 1.5 B 1 U 1.5 U 1 U 1 U 1.5 U 1 U 1 U 1.5 U 1 B

1200 B 1020 B 1090 B 1050 B 7140 4920 B 4850 B 3570 B 1670 B 3530 B 5010 3800 B 4340 B 3140 B

1U1U1U1U1U1U1U1U1U1U1U1U1U 1U

1 U 1 U 1 U 1 U 1 U 1 U 1.16 B 1 U 1 U 1 U 1 U 1.64 B 1.98 B 1 U

13100 12800 11800 12700 19700 13500 19300 8580 7350 8360 25400 19400 25400 181000

0.3 U 0.3 U 0.3 U 0.3 U 0.3 U 0.3 U 0.3 U 0.3 U 0.3 U 0.3 U 0.3 U 0.3 U 0.3 U 0.3 U

1 U 1 U 1.72 B 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 1 U 8.4 B

3.3 U 4.5 B 3.36 B 3.3 U 12.7 B 5.08 B 3.3 U 5.9 B 2.54 B 3.3 U 6.5 B 3.61 B 3.3 U 6.3 B

(ug/L) (ug/L) (ug/L) (ug/L)(ug/L) (ug/L) (ug/L) (ug/L)(ug/L) (ug/L) (ug/L) (ug/L)(ug/L) (ug/L) 3/12/2009 6/4/2009 12/1/2009 3/12/200912/1/2009 3/12/2009 6/4/2009 12/1/20096/4/2009 12/1/2009 3/12/2009 6/4/200912/1/2009 3/12/2009 088-110 088-110 088-110 088-21087-27 088-109 088-109 088-109087-26 087-26 087-27 087-27087-24 087-26

Page 2 of 3

Table 4. Current Landfill - Summary of 2009 Metals Data

Groundwater Standards

Analtye (ug/L)

Aluminum 200

Antimony 3

Arsenic 10

Barium 1000

Beryllium 3

Cadmium 5

Calcium --

Chromium 50

Cobalt --

Copper 200

Iron 300

Lead 15*

Magnesium 35000

Manganese 300

Mercury 0.7

Nickel 100

Potassium --

Selenium 10

Silver 50

Sodium 20000

Thallium 0.5

Vanadium --

Zinc 2000

U - Not Detected

B - Value between contract reporting

limit and instrument detection limit.

* Listed value is the Selected Cleanup

Goal stated in the ROD.

144 B 68 U 68 U 68 U 68 U 68 U

3U3 U3U 3 U3U 3 U

1.7 B 1.6 U 4.29 B 2.38 B 3.25 B 3.23 B

43.5 B 30.4 B 31 B 23.6 B 3.49 B 3.6 B

1U1 U1U 1 U1U 1 U

12800 6610 6740 6810 8850 6020

2 U 1 U 2 U 1 U 2 U 1.12 B

1 U 1 U 4.5 B 2.76 B 1 U 1 U

3U3 U3U 3 U3U 3 U

2940 68.3 B 5800 741 1870 2360

0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

6070 3430 B 2160 B 2160 B 2140 B 1770 B

120 35.5 835 92.2 1750 2170

0.067 U 0.066 U 0.067 U 0.066 U 0.067 U 0.066 U

1 U 1.5 U 1 U 1.5 U 1 U 1.5 U

2870 B 2220 B 1040 B 1000 B 722 B 751 B

1U1 U1U 1 U1U 1 U

83400 51100 12100 12600 12700 13900

0.3 U 0.3 U 0.3 U 0.3 U 0.3 U 0.3 U

5.65 B 1 U 1 U 1 U 1 U 1 U

4.88 B 3.3 U 2 U 3.3 U 3.39 B 3.3 U

(ug/L) (ug/L)(ug/L) (ug/L) (ug/L) (ug/L) 6/4/2009 12/1/20096/4/2009 12/1/2009 6/4/2009 12/1/2009 088-23 088-23088-21 088-21 088-22 088-22

Page 3 of 3

Table 5. Current Landfill - Summary of 2009 Radionuclide Data

Groundwater

Standards

Analtye pCi/L Result Qual MDA Error Result Qual MDA Error Result Qual MDA Error

Americium-241 1.2 6.89 U 14.6 9.6 8.56 U 15.9 9.82 2.42 U 7.66 5

Beryllium-7 40000 6.06 U 18.3 10.9 1.35 U 16.1 9.56 3.91 U 13.8 7.91

Cesium-134 80 -0.463 U 2.33 1.42 -0.406 U 2.14 1.37 0.367 U 2.02 1.21

Cesium-137 120 -0.281 U 2.14 1.28 0.252 U 1.88 2.54 0.614 U 1.89 1.1

Co-60 200 -0.322 U 2.43 1.62 0.792 U 2.24 1.25 1.97 J-UI 1.96 1.03

Cobalt-57 4000 0.503 U 2.02 1.23 0.176 U 1.65 0.976 -0.531 U 1.34 0.789

Europium-152 841 3.26 U 6.98 4.07 -0.835 U 5.32 3.27 0.643 U 4.88 2.97

Europium-154 573 0.958 U 6.26 3.59 -2.4 U 5.39 3.37 -0.462 U 4.34 2.65

Europium-155 4000 -5.35 U 8.63 5.45 -3.4 U 7.11 4.31 -0.615 U 5.95 3.42

Manganese-54 2000 -2.29 U 1.76 1.61 0.103 U 1.72 1.01 -0.77 U 1.53 0.937

Sodium-22 400 0.321 U 2.23 1.28 -0.369 U 1.95 1.17 -0.165 U 1.55 0.946

Strontium-90 8 1.28 0.442 0.395 0.449 U 0.467 0.289 0.131 U 0.51 0.296

Tritium 20000 23.7 U 221 127 622 222 155 273 J 221 139

Zinc-65 360 -8.16 U 4.18 3.19 1.06 U 3.92 2.61 1.89 U 3.33 2.06

J - Estimated Value.

U - Not detected.

I - Interference detected.

pCi/L pCi/L pCi/L

12/1/2009 12/1/2009 12/1/2009

087-09 087-11 087-23

Page 1 of 4

Table 5. Current Landfill - Summary of 2009 Radionuclide Data

Groundwater

Standards

Analtye pCi/L

Americium-241 1.2

Beryllium-7 40000

Cesium-134 80

Cesium-137 120

Co-60 200

Cobalt-57 4000

Europium-152 841

Europium-154 573

Europium-155 4000

Manganese-54 2000

Sodium-22 400

Strontium-90 8

Tritium 20000

Zinc-65 360

J - Estimated Value.

U - Not detected.

I - Interference detected.

Result Qual MDA Error Result Qual MDA Error Result Qual MDA Error

-1.16 U 3.89 3.36 1.18 U 3.35 2.18 2.3 U 11.8 7.45

-0.571 U 17.2 10.2 -8.83 U 15.7 9.92 -6.69 U 15 9.39

0.911 U 2.77 1.55 1.02 U 2.48 1.41 0.259 U 2.02 1.19

1.63 U 2.49 1.41 -1.37 U 3.29 2.42 0.505 U 1.88 1.08

0.755 U 2.73 1.6 -0.529 U 2.1 1.3 1.25 U 1.79 0.984

-0.352 U 1.35 0.803 0.298 U 1.33 0.76 -0.0236 U 1.54 0.915

-2.13 U 5.4 3.22 0.46 U 5.35 3.11 2.05 U 5.24 3.04

-1.8 U 5.64 3.61 1.66 U 6.38 3.67 -1.34 U 4.91 3.01

1.2 U 5.59 3.21 1.24 U 5.49 3.12 -1.99 U 6.56 3.91

-0.902 U 2.22 1.35 -0.433 U 1.84 1.13 0.0713 U 1.69 1.01

-0.652 U 2.01 1.29 0.601 U 2.28 1.31 -0.485 U 1.75 1.07

0.0102 U 0.437 0.248 -0.197 U 0.357 0.184 0.482 U 0.787 0.473

318 222 141 272 J 221 139 359 222 143

-4.36 U 5.15 4.01 1.15 U 4.52 2.96 1.62 U 3.69 2.38

pCi/L pCi/LpCi/L

12/1/2009 12/1/2009 12/1/2009

087-26 087-27087-24

Page 2 of 4

Table 5. Current Landfill - Summary of 2009 Radionuclide Data

Groundwater

Standards

Analtye pCi/L

Americium-241 1.2

Beryllium-7 40000

Cesium-134 80

Cesium-137 120

Co-60 200

Cobalt-57 4000

Europium-152 841

Europium-154 573

Europium-155 4000

Manganese-54 2000

Sodium-22 400

Strontium-90 8

Tritium 20000

Zinc-65 360

J - Estimated Value.

U - Not detected.

I - Interference detected.

Result Qual MDA Error Result Qual MDA Error Result Qual MDA Error

0.364 U 11 6.56 0.235 U 2.83 1.87 -1.17 U 6.31 3.76

3.74 U 15.7 9.41 -1.1 U 14.7 8.88 1.51 U 15 9.08

1.24 U 1.88 1.05 0.213 U 2.13 1.25 0.817 U 1.95 1.12

0.618 U 1.79 1.03 -1.78 U 2.82 2.29 0.0468 U 1.7 0.998

-0.378 U 1.69 1.02 0.341 U 1.98 1.16 -0.505 U 1.65 1.02

-0.212 U 1.49 0.92 0.562 U 1.15 0.652 -0.1 U 1.4 0.852

-3.07 U 4.74 2.96 -2.29 U 4.39 2.65 -0.502 U 4.76 2.86

0.741 U 4.89 2.82 0.0315 U 4.7 2.79 1.12 U 4.87 2.81

2.37 U 6.57 3.96 0.206 U 4.39 2.52 -0.992 U 5.52 3.36

0.573 U 1.72 0.994 -0.617 U 1.69 1.04 -0.155 U 1.56 0.945

-0.294 U 1.74 1.04 -0.324 U 1.67 1.02 0.255 U 1.74 1.02

0.0413 U 0.524 0.304 0.299 U 0.446 0.27 3.45 0.472 0.581

-8.64 U 222 126 106 U 221 131 -17.2 U 221 125

1.34 U 3.62 2.43 -3.1 U 3.52 2.27 -1.11 U 3.3 2.34

pCi/LpCi/L pCi/L

12/1/2009 12/1/2009

088-21

12/1/2009

088-109 088-110

Page 3 of 4

Table 5. Current Landfill - Summary of 2009 Radionuclide Data

Groundwater

Standards

Analtye pCi/L

Americium-241 1.2

Beryllium-7 40000

Cesium-134 80

Cesium-137 120

Co-60 200

Cobalt-57 4000

Europium-152 841

Europium-154 573

Europium-155 4000

Manganese-54 2000

Sodium-22 400

Strontium-90 8

Tritium 20000

Zinc-65 360

J - Estimated Value.

U - Not detected.

I - Interference detected.

Result Qual MDA Error Result Qual MDA Error

1.95 U 10.3 6.87 -0.0397 U 6.4 4.27

-6.31 U 14.6 9.23 1.32 U 12.8 7.42

0.24 U 2 1.18 -0.43 U 1.57 0.99

0.414 U 1.68 0.965 0.366 U 1.48 0.869

0.0944 U 1.65 0.967 -0.213 U 1.54 1.1

0.419 U 1.48 0.898 0.283 U 1.18 0.672

-0.0627 U 4.9 2.94 0.0909 U 4.01 2.46

1.69 U 5.11 2.89 0.694 U 4.07 2.4

-3 U 6.11 3.82 0.79 U 4.98 2.83

-0.0424 U 1.6 0.955 0.133 U 1.35 0.778

0.757 U 1.83 1.03 0.242 U 1.46 0.857

0.163 U 0.414 0.243 -0.325 U 0.576 0.318

511 222 150 461 220 147

0.58 U 3.37 2.32 -0.195 U 2.79 1.94

pCi/L pCi/L

12/1/2009 12/1/2009

088-22 088-23

Page 4 of 4

Table 6. Former Landfill - Summary of 2008 VOC Data

Groundwater

Standards

Analtye (ug/L)

1,1,1,2-Tetrachloroethane 5 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

1,1,1-Trichloroethane 5 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.29 J 0.5 U 1.89

1,1,2,2-Tetrachloroethane 5 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.619

1,1,2-Trichloroethane 1 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U

1,1-Dichloroethane 5 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 0.5 U 1.88