URS Corporation Iron Hill Corporate Center 4051 Ogletown Road, Suite 300 Newark, DE 19713 

# Quality Assurance Project Plan/ Sampling and Analysis Plan For Groundwater and Leachate Monitoring DuPont Chambers Works Deepwater, New Jersey

Date: October 2010 Project No.: 18985810.00004Quality Assurance Project Plan/ Sampling and Analysis Plan Table of Contents

008221_2010_28_10QAPPSAP-final.doc i Newark, DE 

## Table of Contents

1.0 Introduction............................................................................................................... ..1 1.1 Project Background............................................................................................1 1.2 Previous Quality Assurance and Quality Control Programs..............................2 1.3 Project Description.............................................................................................2 1.3.1 Site Location and Description ..............................................................2 1.3.2 Current Monitoring Programs ..............................................................2

2.0 Project Organization and Responsibility ....................................................................4 2.1 Management Responsibilities ............................................................................4 2.1.1 Project Director ....................................................................................4 2.1.2 Project Manager ...................................................................................5 2.1.3 Health and Safety Officer.....................................................................5 2.1.4 Field Coordination................................................................................5 2.1.5 Technical Consultants ..........................................................................5 2.1.6 Technical and Support Staff .................................................................5 2.2 QA Responsibilities ...........................................................................................6 2.2.1 Quality Assurance Officer....................................................................6 2.2.2 Project Chemists...................................................................................6 2.3 Laboratory Responsibilities ...............................................................................6 2.3.1 Laboratory Personnel ...........................................................................6 2.4 Training/Certification ........................................................................................7

3.0 Sampling and Analysis Plan .......................................................................................8 3.1 Field Activities Overview..................................................................................8 3.1.1 NAPL Survey .......................................................................................8 3.1.2 Well Condition Update.........................................................................8 3.1.3 Tubing Replacement.............................................................................9 3.1.4 Total Well Depth Measurement ...........................................................9 3.1.5 Water-Level Data Collection................................................................9 3.1.6 Leachate Sampling ...............................................................................9 3.2 Preliminary Activities ......................................................................................10 3.3 Data Generation ...............................................................................................10 3.3.1 Sample Locations ...............................................................................10 3.3.2 Sample Naming ..................................................................................11 3.4 Groundwater Sampling Methods .....................................................................12 3.4.1 Standard Protocol ...............................................................................12 3.4.2 Low Flow Protocol.............................................................................14 3.4.3 Leachate Sampling Procedures ..........................................................15 3.4.4 Additional Procedures for PFOA Samples.........................................16 3.5 Equipment Decontamination Procedures.........................................................16 3.6 Health and Safety.............................................................................................17 3.7 Waste Management..........................................................................................17Quality Assurance Project Plan/ Sampling and Analysis Plan Table of Contents

008221_2010_28_10QAPPSAP-final.doc ii Newark, DE 4.0 Custody and Documentation.....................................................................................18 4.1 Field Logbook..................................................................................................18 4.2 Sample Custody Documentation......................................................................18 4.2.1 Field Sample Chain-of-Custody.........................................................19 4.2.2 Laboratory Sample Custody...............................................................20

5.0 Analytical Methods and Data Quality.......................................................................21 5.1 Analytical Methods..........................................................................................21 5.2 Quality Control ................................................................................................21 5.2.1 Field Blanks........................................................................................21 5.2.2 Equipment Blanks ..............................................................................22 5.2.3 Field Duplicate Samples.....................................................................23 5.2.4 Split Samples......................................................................................23 5.2.5 Laboratory Blank Samples .................................................................23 5.2.6 Trip Blank Samples ............................................................................24 5.2.7 Laboratory Control a nd Replicate Samples........................................24 5.3 Quality Assurance Objectives..........................................................................24 5.3.1 Data Quality Objective.......................................................................25 5.3.2 Representativeness .............................................................................25 5.3.3 Comparability.....................................................................................26 5.3.4 Accuracy.............................................................................................26 5.3.5 Precision .............................................................................................27 5.3.6 Completeness......................................................................................28 5.4 Instrument/Equipment Testing, Inspection, and Maintenance ........................28 5.4.1 Instrument /Equipment Testing and Inspection..................................28 5.4.2 Instrument/Equipment Maintenance ..................................................29 5.4.3 Acceptance Requirements for Supplies and Consumables ................29

6.0 Documentation..........................................................................................................30 6.1 Logbook and Forms .........................................................................................30 6.2 Laboratory Deliverables...................................................................................30 6.3 Archival Requirements ....................................................................................31 6.4 Data Reduction.................................................................................................31 6.5 PFOA Data Reporting......................................................................................32 6.6 Data Verification..............................................................................................33 6.6.1 Laboratory Review .............................................................................33 6.6.2 Laboratory Qualifiers .........................................................................34 6.7 Statistical Analysis Reporting..........................................................................35

7.0 Performance and System Audits...............................................................................36

8.0 References................................................................................................................. 38Quality Assurance Project Plan/ Sampling and Analysis Plan Table of Contents

008221_2010_28_10QAPPSAP-final.doc iii Newark, DE Tables

Table 1-1 Corrective Action Monitori ng Program - Basins Post Closure Table 1-2 Corrective Action Monitoring at the Secure C Landfill Table 1-3 PFOA Monitoring Program Table 1-4 Secure C Landfill Detection Monitoring Program Table 1-5 Perimeter Monitoring Program Table 1-6 Post-Closure Monitoring for RCRA Units Table 2 Analytical Parameter Bottle Filling Order Table 3 Summary of Containers, Holding Times, and Preservation Table 4 Analytical Methodology Table 5 Precision, Accuracy, an d Completeness Objectives

Figures Figure 1 Project Organization Diagram

Appendices Appendix A Water-Level Data Collection and Data Transfer QA/QC Procedure Appendix B Blank Instrument Calibration and Field Logbook FormsQuality Assurance Project Plan/ Sampling and Analysis Plan Introduction

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## 1.0 Introduction

1.1 Project Background

This Quality Assurance Project Plan (QA PP)/Sampling and Analysis Plan (SAP) has been completed for the groundwater and leachat e sampling activities associated with the DuPont Chambers Works New Jersey Pollutant Discharge Elimination System-Discharge to Groundwater (NJPDES-DGW) Permits Nos. NJ0105872 and NJ0083429. This QAPP/SAP discusses the proced ures and practices devel oped to ensure that all groundwater and leachate data attained at DuPont Chambers Works are technically sound, usable, and properly documented. The overa ll quality assuranc e objective is to ensure that acceptable quality data are gene rated during field sampling events. Procedures and practices presented in this QAPP/SAP al so will ensure that all measurements are performed to yield consistent results representa tive of media and conditions measured, which accurately reflect project objectives. The QAPP/SAP includes the following:

 Project organization and responsibilities

 Sampling methods

 Sample custody and documentation procedures

 Calibration program, frequency, and maintenance

 Analytical methods and quality control

 Quality assurance objectives for data measurement

 Data reduction, validation, and reporting

 Performance and system audits

 Corrective action approach

 Quality assurance reports to management This document provides a mechanism for cont rolling and evaluating th e quality of data acquired throughout the course of the sampli ng events at Chambers Works, provides quality assurance guidelines to be followed during the sample collection process and states the requirements for data usability and representativeness. It is crucial that the QAPP/SAP be implemented to successfully generate data of known and acceptable quality. Sample analysis will be performed accordi ng to laboratory standard operating procedures (SOPs). A DuPont Corporate Remediation Group (CRG) selected laboratory that participates in the audits conducted on be half of the DuPont CRG will perform all analyses.Quality Assurance Project Plan/ Sampling and Analysis Plan Introduction

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### 1.2 Previous Quality Assurance and Quality Control Programs

This QAPP/SAP further revises the August 2005 Q uality Assurance Project Plan with Sampling and Analysis Plan for Groundwater and Leachate Monitoring, which revised the August 4, 2000 Environmental Data Quality A ssurance and Quality Control Program . The original document was the December 13, 1993, Groundwater Sampling and Analysis (GSA) Plan (Revision 1) . The new QAPP/SAP refl ects the conditions and requirements of the NJPDES DGW Permits Nos. NJ0105872 and NJ0083429.


### 1.3 Project Description

1.3.1 Site Location and Description
The 1,455-acre DuPont Chambers Works Comple x is located along th e eastern shore of the Delaware River in Deepwater, New Jersey. The complex, which extends 2.7 miles between Helms Cove to the north and Sa lem Canal to the south, lies in both the Pennsville and Carneys Point Townships in the northwest porti on of Salem County. In 1970, DuPont began pumping an intercepto r well system (IWS) designed to collect groundwater and restrict the off-site migr ation of groundwater for the protection of human health and the environment in respons e to identified groundwater contamination. This system has been upgraded since that time and currently pumps a monthly daily average of 1.0 million gallons of groundwater . The Chambers Works Complex is subject to a variety of federal and state enviro nmental regulations. The Chambers Works Resource Conservation and Recover Act (RCRA ) corrective action program is under the jurisdiction of the United States Environmental Protection Agency (EPA) through a Hazardous and Solid Waste Amendments of 1984 (HSWA) permit that became effective in November 1988.

A detailed discussion of site setting, history, and regulator y background is provided in the Preliminary Site Assessment Report (PAR) (CRG, 2006). Background geologic information for the site is included in the Phase IV RCRA Facility Investigation Report (CRG, 2005) and the Perimeter Investigation Report (URS, August 2010).

1.3.2 Current Monitoring Programs
Two separate NJPDES-DGW Permits cove r the monitoring programs at Chambers Works. As part of these permits 90 wells are sampled under five separate groundwater monitoring programs. Forty-eight wells ar e sampled under three separate groundwater monitoring programs for compliance w ith the NJPDES-DGW Permit No. NJ0083429. The groundwater monitoring prog rams include the following:

 Closure and Post-Closure Groundwater Mo nitoring Program for the A, B, and C Basins (see Table 1-1)

 Corrective Action Monitoring Program at the Secure C Landfill (see Table 1-2)

 PFOA Monitoring Program (see Table 1-3)Quality Assurance Project Plan/ Sampling and Analysis Plan Introduction

008221_2010_28_10QAPPSAP-final.doc 3 Newark, DE Additionally, in compliance with NJ PDES-DGW Permit NJ0105872, the groundwater monitoring programs include the following:

 Detection Monitoring Program at the Secure C Landfill which consist of sampling four wells and two background wells se mi-annually; and monitoring leachate quality and flow rates in three leachate collection sumps and flow rates in nine leak detection sumps biennially (every two years) (see Table 1-4). Groundwater quality is monitored in two wells (wells S24-M01B and T22-M01B) to characterize background for both correctiv e action and detection monitoring programs at the Secure C Landfill.

 Perimeter Monitoring Program for the Ch ambers Works Site (see Table 1-5)

 Post-closure Monitoring for RCRA units (see Table 1-6) In addition to permitted monitoring programs, groundwater is also monitored as part of interim remedial action programs, and at a ny time, collection of these samples may be completed following this QAPP/SAP. Curren tly, groundwater is monitored biannually from 10 wells in the area of the Salem Canal sheet-pile barrier wall as part of an interim remedial action detection monitoring program. Lastly, the Groundwater Protection Plan (GWPP), which is de signed to protect groundwater beyond the boundaries of the complex with respect to op erational units in accordance with NJPDES-DGW Permit No. NJ0105872, is continually evaluated to ensure the protection of human health and the environment. Therefore, changes or additional wells may be added to the m onitoring program. The revised GWPP was submitted in August 2007, along with the permit renewal application.Quality Assurance Project Plan/ Sampling and Analysis Plan Project Organization and Responsibility

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## 2.0 Project Organization and Responsibility

The lead organization responsible for the project is DuPont CRG in Wilmington. URS Corporation, on behalf of DuPont, will c onduct the groundwater and leachate monitoring activities. In addition, the following laboratories will be used:

 Lancaster Laboratories, Inc. (Lancaster), Lancaster, Pennsylvania will perform the majority of the analytical work.

 Test America Laboratories, Inc., Austi n, Texas (TAL-AUS) will perform analysis of organic lead.

 Test America Laboratories, Inc., Buffalo, New York will perform analysis of total organic halides (TOX) and total organic carbon (TOC).

 Test America Laboratories, Inc., Knoxv ille, Tennessee (TAL-KNX) will perform high resolution analysis of polychlor inated biphenyl (PCB) congeners.

 Axys Analytical Services Ltd., British Co lumbia, Canada will perform analysis of perfluorinated compounds.

 Critical Path Services, LLC (CPS) and Ga rnet Valley, Pennsylvania will perform analysis of perfluorinated compounds in wastewater.

The contract laboratories will be accredited as required by the state agencies and other organizations, as appropriate. The program organization and a ssociated responsibilities ar e provided in the following sections. The lines of authority for this sp ecific project are found in Figure 1, which includes the individuals discussed below. Th e persons described will be charged with ensuring the collection of usable data and assessing measurement systems for precision and accuracy.


### 2.1 Management Responsibilities

2.1.1 Project Director
Mr. Ed Lutz, DuPont CRG, is the project dire ctor for the project. His responsibilities will be as follows:

 Provide strategic-level review of technical activities.

 Approve project-specific pro cedures and internally prep ared plans, drawings, and reports.

 Provide guidance to the project team.

 Act as the DuPont representative for the EPA and NJDEP.Quality Assurance Project Plan/ Sampling and Analysis Plan Project Organization and Responsibility

008221_2010_28_10QAPPSAP-final.doc 5 Newark, DE 2.1.2 Project Manager
Mr. Chris Ward, URS Corporation, is the pr oject manager for this activity at the Chambers Works Complex. He will be the primary point-of-contact with DuPont and will be responsible for all technical, financ ial, and scheduling matters. His other responsibilities will be as follows:

 Assign duties to the project team and or ient the team to project needs and requirements.

 Disseminate project-related information from DuPont.

 Act as liaison with subcontractor organizations (unless specifically delegated to others).

 Interact with the quality assurance (QA) officer and health and safety officer to ensure that these programs are functioning effectively.

 Serve as the collection point for project team reporting of nonconformance with QA procedures or changes in pr oject documents and activities.

2.1.3 Health and Safety Officer
Mr. Kevin Suter, URS Corporation, will be the health and safety review officer for the project. He will be responsible for devel oping, reviewing, and appr oving of the project health and safety plan (HASP). He will ensure that the project HASP is consistent with applicable state and federal regulations and will also be responsible for implementing the HASP.

2.1.4 Field Coordination
Mr. Unitas Todd, URS Corporation, is respon sible for the field coordination for the project. He will be responsible for the following tasks:

 Help coordinate or lead the site investigation and sampling team(s).

 Assist the sampling team with sample collection.

2.1.5 Technical Consultants
Senior staff members with expertise in th e disciplines associated with the site investigation are also available to the proj ect on an as-needed basis. These individuals will participate in the project as directed by the project manager.

2.1.6 Technical and Support Staff
Individuals in this category will participate in the technical activities associated with the project and will be coordinated by the technical lead or project manager.Quality Assurance Project Plan/ Sampling and Analysis Plan Project Organization and Responsibility

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### 2.2 QA Responsibilities

2.2.1 Quality Assurance Officer
Mr. Michael Aucoin, URS Corporation, will be the QA officer for the project. His responsibilities are as follows:

 Develop and review the QAPP.

 Administer the QAPP.

 Supervise day-to-day QA activities.

 Notify personnel of nonconforman ce or changes in procedures.

 Determine the system and performa nce audit schedules, if required.

2.2.2 Project Chemists
Mr. Michael Aucoin, URS Corporation, will also be a project chemist for the project. He will schedule all sample container orders and analytical requests with Axys and or CPS. He will also be the point-of-contact between these laboratories and the project team. He will coordinate review of data generated by these laboratories. Ms. Candia Carle, URS Corporation, will be th e project chemist for the project as it is related to the other laboratories. She will be the point-of-contact between Lancaster and Test America Laboratories. She will also coordi nate the review of data generated by these laboratories.


### 2.3 Laboratory Responsibilities

DuPont approved laboratories will provide an alytical services for this project. The agencies will be notified of any ch ange in the designated laboratories.

2.3.1 Laboratory Personnel
The key laboratory personnel for this project wi ll be the laboratory project managers at each laboratory. The analytical laboratory project manager will be responsible for execution of the analytical testing program for the project. Th e laboratory project manager will be responsible for laboratory analyses and data processing. The laboratory project manager will be the point-of-contact for the project chemist and QA officer and will be assisted by the laboratory QA director, who is responsible for ensuring that laboratory internal QA procedures are followed and for processing QA data. The laboratory project manager is also responsib le for submitting the final data package, including a portable document format (.pdf) copy of the analytical re port and electronic data deliverable (EDD), within the requested turnaround time. The laboratories have signed contracts with DuPont detailing the terms and conditions for services. The contracts include a guarantee to dispose of samples following analysis in accordance with all pertinent federal, st ate, and local laws and ordinances.Quality Assurance Project Plan/ Sampling and Analysis Plan Project Organization and Responsibility

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### 2.4 Training/Certification

The project files shall cont ain the documentation of tr aining specified in 29 CFR 1910.120 (e) for all persons working on-site. The level of training required is dependent upon the person’s on-site activit ies and potential for exposure to hazardous substances and/or other hazards enc ountered during the sampling. Laboratory quality assurance pl ans and SOPs address required experience and/or training for the analyst in the laboratory. Specialized training required by DuPont will also be documented and retained in the project files.Quality Assurance Project Plan/ Sampling and Analysis Plan Sampling and Analysis Plan

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## 3.0 Sampling and Analysis Plan

Numerous groundwater and leach ate samples will be collected and analyzed for program specific constituents. This section provides an overview of the field activities and describes activities to be completed prior to sampling, sampling procedures, equipment decontamination, health and safety requirements, and waste management.



### 3.1 Field Activities Overview

Groundwater monitoring activit ies are best handled by treating the Chambers Works Complex as one unit. The groundwater monitoring activities a nd schedule are noted below.

 Monthly non-aqueous phase liquid (NAP L) survey and collection will be performed from a limited number of wells.

 Semi-annual water levels and general well surveys will include a survey forNAPL, a survey of well conditio n, and water-level data collection.

 Biennially (once every two year s) well tubing will be replaced.

 Every 5 years a total well depth determination survey will be completed.

 Biennially, during the first semester of odd years, leachate will be collected from the sumps and collection system.

3.1.1 NAPL Survey
DuPont has a NAPL Program that supports the overall RCRA Corrective Action Program at Chambers Works, as agreed upon with th e EPA and NJDEP. The intent of the NAPL Program is to 1) identify specific well lo cations where either light non-aqueous phase liquid (LNAPL) or dense non-aqueous phase liquid (DNAPL) is present, and 2) determine the feasibility of recovering NAPL from specific wells where the material is present in recoverable quantities. All of th e Chambers Works monitoring wells have been investigated for the presence of LNAPL a nd DNAPL. Currently, there are 15 monitoring wells that are part of the NAPL survey, whic h is conducted each month to search for the presence of NAPL. In addition, DNAPL is currently removed by pump at an additional three locations. Additional wells can be a dded to the NAPL survey list based on the results of the semi-annual, water-level round results.

3.1.2 Well Condition Update
Chambers Works well condition updates are conducted semi-annually during water-level measurements to assess the general integrity, security, and proper id entification of each well. Problems with integrity, s ecurity, or identification are recorded on the field sheets. Minor problems that can be easily corrected are corrected immediately. Repairs that require further attention are scheduled with appropriate personnel and are corrected as soon as possible.Quality Assurance Project Plan/ Sampling and Analysis Plan Sampling and Analysis Plan

008221_2010_28_10QAPPSAP-final.doc 9 Newark, DE 3.1.3 Tubing Replacement
In many cases, Chambers Works monitoring we lls are purged with a variety of pumps (approved by the NJDEP) that require polyet hylene tubing and foot valve attachments. Pumps and pump selection procedures ar e described in Section 3.4.1. Many Chambers Works monitoring wells are purged with for ce-providing equipment that does not enter the well (i.e., centrifugal or pe ristaltic pumps). When a centr ifugal or peristaltic pump is used, polyethylene tubing with a foot valve attachment is dedicated to a well for a twoyear period. The dedicated equipment will be replaced during the second half of the second year with new clean polyethylene t ubing and new or labor atory-cleaned foot valves. If necessary, the tubing and foot valves will be replaced more frequently. In the event that a submersible pump is used to evacuate a well, new clean polyethylene tubing is used each time the pump enters the monitoring well.

3.1.4 Total Well Depth Measurement
Chambers Works total well depths are meas ured every five years. Well soundings are made with stainless-steel tape s and recorded on field sheets. These field sheets are filed in the Chambers Works filing system.

3.1.5 Water-Level Data Collection
Semi-annually, water-level elevation data are collected from Chambers Works monitoring wells, production well s, and benchmarks. Water levels are measured directly with an M-scope or pressure gauge where a pplicable. The water-level collection process is conducted in accordance with the Chambers Works water-level data collection and data transfer QA/quality control (QC) procedure (see Appendix A). Wells set in the B Aquifer and located along the Delaware River are su bject to tidal influences. In order to normalize tidal influences on these wells, water-level information is gathered during the astrological cycle of the month having the least gravitational effect on tides. On the selected day, water levels (for tidally influenced wells) are collected at specific times that have been calculated to represent mid-tide el evations. The water levels are recorded on field sheets that are filed in the Chambers Works filing system. Equipment used in the activities described above is cleaned in accordance with the methods outlined in Section 3.5.

3.1.6 Leachate Sampling

Leachate is collected from the Secure C Landfill sumps using a clean open cup on an extended reach pole so as to collect the samp le from the discharge port. If reaching the discharge port is not possible, a one-time use disposable bailer is lowered into the sump for collection of the sample.Quality Assurance Project Plan/ Sampling and Analysis Plan Sampling and Analysis Plan

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### 3.2 Preliminary Activities

The following preliminary activities will be completed before sampling personnel enter the field to ensure proper prep aration for each sampling event:

 Coordination between sampling and laboratory personnel will be established so that sample integrity is retained at all times during the sampling event.

 The laboratory manager will be notified of the upcoming sampling event so the laboratory can prepare the list of parameters to be analyzed for each site, the replicate requirements, and the number of extra bottles needed, if any, for quality control testing. Sample bottles will be provided by the laboratories pre-preserved prior to shipment to the field.

 All proper field forms [i.e., field logbooks , custody seals, and chain-of-custody (COC) forms] will be prepared for use to enable proper documentation of the sampling event.

 A preliminary inspection and calibration of all field equipment will be performed to ensure accurate measurements of field parameters (i.e., pH, specific conductance, dissolved oxygen, turbidity, and temperature).

 All field personnel will be trai ned in the sampling protocols. The following steps will be performed before beginning each sampling event to ensure sampling is implemented correctly and safely:

 The sample locations will be identified.

 All equipment to be used during the sampling event will be inspected, precleaned, and decontaminated.

 Field meters to be used during samp ling (i.e., pH and specific conductance meters) will be checked to ensure proper calibration and precision response.

 All forms to be used in the field (e.g., field logbook, COC sheets) will be assembled.

 Sampling personnel will review sampling protoc ols. In addition, health and safety protocols will be reviewed to help ensu re that no injuries occur during the sampling events.

 Chambers Works daily work permits will be obtained.



### 3.3 Data Generation

3.3.1 Sample Locations
Tables 1-1 through 1-6 provide the following information:

 Sampling locations

 Sampling frequency and schedule

 Required field measurementsQuality Assurance Project Plan/ Sampling and Analysis Plan Sampling and Analysis Plan

008221_2010_28_10QAPPSAP-final.doc 11 Newark, DE  Required analysis

3.3.2 Sample Naming
Sample labels will clearly identify the pa rticular sample, and include the following:

 Facility name (locati on code) and sample ID

 Time and date sample was collected

 Sample preservation (if any)

 Analysis requested Sample identification numbers will be assigned, when possible, prior to sample collection in accordance with the DuPont CRG sample iden tifier coding system to facilitate loading of samples and results into the Envista database [formerly, Corporate Environmental Database (CED)]. All samples will have a three-digit location code as follows:

 CWK – Chambers Works The following characters are the matrix codes:

 A Air

 D Drinking water

 E Sediment

 G Groundwater

 K Blank water

 S Soil (subsurface samples)

 W Surface water

 X Other solid

 Z Other liquid The following digits define the sampling point , with maximum character length of 16 and includes sample depth in feet in parenthe ses when applicable [e.g., CWK-S-B115(0-2)]. Field duplicate samples will receive a sample identification that are similar to that of the original sample, with the exception that th e duplicate will have “DUP” as a suffix [e.g., CWK-S-B115 (0-2)-DUP]. Matrix spike and matrix spike duplicate sample s will receive sample identifications that are similar to that of the original sample, with the exception that the matrix spike and matrix spike duplicate sample identification will have “MS” or “MSD”, respectively, as a suffix [e.g., CWK-S-B115(0-2)-MS or CWK-S-B115(0-2)-MSD]. Trip and equipment blanks will receive sample identification that will include the location and matrix code, and sequentia l number (e.g., CWK-K-TRIP-1 or CWK-KEQBLK-1). Samples collected for dissolved analysis, if any, will have “D IS” suffix (e.g., CWK-GD15-M01B-DIS).Quality Assurance Project Plan/ Sampling and Analysis Plan Sampling and Analysis Plan

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### 3.4 Groundwater Sampling Methods

Groundwater will be sampled either by standa rd protocol or by using the low-flow protocol.

3.4.1 Standard Protocol

Preliminary Activities The following activities will be completed prio r to the sampling team entering the field. More details concerning these activities are described in greater detail below or in previous sections of this QAPP/SAP.

 Coordination between the sampling team and the laboratory will occur.

 Sample bottles will be provided by the laboratories pre-preserved prior to shipment to the field.

 Forms (logbooks, custody seals, and chain-of -custody) will be prepared for the sampling event.

 Equipment will be inspected, pre-cleaned, decontaminated, and checked to ensure proper calibration and response prior to use in the field.

 Sampling personnel will review the sampli ng protocols and health and safety protocols prior to entering the field.

Well Evacuation Procedure The well caps are removed to vent any gases that may have accumulated inside the well casing before evacuating water from a well. Air monitoring equipment such as a photo ionization detector or a flame ionization detector (PID or FID) will be used to detect the presence of volatile organic compounds (VOCs) within the well casing as well as in the breathing zone. A water-level indicator is then used to measure the depth to water (DTW) from the top of the casing. Before evacuating monitoring wells, the volum e of groundwater in the well is determined with the following formula. Volume = (TWD-DTW) x C

Where, Volume = one well volume (gallons) TWD = Total well depth (feet)—from the most recent well sounding survey DTW = Depth to water (feet) C = casing diameter coefficient (gallons/linear foot) C for: 2-inch diameter = 0.163; 4-inch diameter = 0.653; 6-inch diameter = 1.47

When possible, three well volumes are evacuated from each well prior to sampling. Wells are purged dry if the recharge rate is le ss than 0.5 gallons per minute (gpm). Field parameters (i.e., pH, specific conductance, temperature, redox, and dissolved oxygen) are measured after purging each well volume. Field parameters are recorded to ensure that representative samples are co llected. Groundwater samples ar e considered representativeQuality Assurance Project Plan/ Sampling and Analysis Plan Sampling and Analysis Plan

008221_2010_28_10QAPPSAP-final.doc 13 Newark, DE of subsurface conditions when three consecuti ve sets of field parameter measurements are within 10% of each other (+/- 0.1 units for pH) when compared. If necessary, up to five well volumes will be purged to meet the criteria. Chambers Works monitoring wells are evacua ted using one of the following devices:

 Centrifugal pump/polyet hylene tubing/foot valve

 Two-inch submersible pu mp/polyethylene tubing

 Four-inch submersible pu mp/polyethylene tubing

 Clean Teflon® or other bottom fill bailer

 Dedicated bladder pump with Teflon or other lined tubing

 Portable bladder pump with polyethylen e tubing and disposable bladder. In general, one of the devices is used to evacuate monitoring wells ; however, alternative devices, acceptable to NJDEP protocol, may be used when necessary. Pump selection is determined in the field based on the following:

 Casing diameter

 Monitoring well recharge rate

 Water-level elevation

 Analytical requirements Generally, a centrifugal (with polyethylene tu bing and a foot-valve attachment) or submersible pump is used to purge a monito ring well when the water level is less than 25 feet from top of casing and the well r echarge rate is greater than 0.5 gpm. A submersible pump (2-inch or 4-inch diameter) is used when the water level in a monitoring well is greater than 25 feet from top of casing or if the re charge rate is less than 0.5 gpm. During evacuation, the pump intake is positione d within 6 feet of the top of the water column to ensure that all stagnant water is purged from the well before sampling. The pump intake is also positioned above the well screen to ensure the water column is not pumped below the level at whic h groundwater enters the well.

If an industrial well is in operation (online) prior to sampling, no purging is conducted, and the well is sampled immediately. If the we ll is not in operation (offline), the well is turned on and purged for at leas t 15 minutes prior to sampling. Standard Well Sampling Procedure Each monitoring well sample is collected with a laboratory cleaned Te flon or other bailer connected to a laboratory-clea ned Teflon leader and tied to new polyethylene rope. The Teflon bailer is introduced into the water column with minimal disturbance. The first bailer of groundwater is used to sample VOCs. Sample bottles are filled directly from the bailer. Production wells are sampled di rectly from the well sampling port. Sampling order, bottle type, and preserva tives follow protocol set by the NJDEP Field Sampling Procedures Manual (August 2005). The correct bo ttle filling order forQuality Assurance Project Plan/ Sampling and Analysis Plan Sampling and Analysis Plan

008221_2010_28_10QAPPSAP-final.doc 14 Newark, DE analytical parameters is included as Table 2. Sample containers are prepared together with preprinted chains-of-custody by or under supervision of DuPont. The container type and preservatives specified in SW846, 3r d Edition, Update IV, or 40 CFR 136.3 are employed and summarized in Table 3. Field parameters, pH, redox, specific conducta nce, temperature, and dissolved oxygen, are measured within 15 minutes of sample co llection, and this analysis time is noted in the field logbook (see Appendix B). General char acteristics (color, odor , and turbidity) of each sample are also recorded. Dissolved metals are field filtered using a 0.45 micron filter and peristaltic pump or posifilter system.

3.4.2 Low Flow Protocol
Low Flow Purging With low flow purging, groundwater is pur ged from monitoring wells at rates approximating natural recharge. Wells are purge d until representative groundwater enters the sampling device, and then samples are coll ected at rates less than the purge rate. The sampling order will begin generally with wells around the perimeter having the lowest VOC concentrations and end with the interior wells having the highest VOC concentrations. Wells with dedicated sampling equipment can be sampled in any order. Chambers Works monitoring wells will be ev acuated with one of the following devices when low flow purging is employed:

 Dedicated bladder pump with Teflon or other lined tubing

 Portable bladder pump with polyethyl ene tubing and disposable bladder

 Two-inch submersible pump with polyethylene tubing In general, one of the above devices will be used to evacuate monitoring wells; however, alternative devices that are acceptable to NJDEP protocol may be used when necessary. Pump selection is determined in the field based on the following:

 Case diameter

 Monitoring well recharge rate

 Water-level elevation

 Analytical requirements If a bladder pump or submersible is empl oyed to purge the monitoring well, then the pump will be lowered into the well until th e pump intake is suspended within the midpoint of the screened interval. Water will be purged from the well at a low flow rate (ideally at 250 ml/minute). In-line groundwater field para meters will be measured through a flow cell at 3- to 6-minute intervals or the time it takes for the purge water to replace one flow-through-cell volume. Fi eld parameters (i.e., pH, redox, specific conductance, temperature, and dissolved oxygen) are recorded to ensure that samples representative of subsurf ace conditions are collected.Quality Assurance Project Plan/ Sampling and Analysis Plan Sampling and Analysis Plan

008221_2010_28_10QAPPSAP-final.doc 15 Newark, DE Groundwater is considered representative when three consecutive se ts of in-line field parameter measurements are within the following limits:

 pH – + 0.1 unit

 Temperature – + 3%

 Redox (ORP) + 10 millivolts

 Dissolved oxygen – + 10%

 Specific Conductance – + 3%

 Water-level draw down <0.3 feet

 Turbidity - + 10% for values greater than 1 NTU If necessary, additional groundwater, not to ex ceed three well volumes, will be purged to meet the criteria. Low Flow Sampling Procedures When a bladder pump is used in the purge and sample process, groundwater samples are collected directly from the discharge tubing. After field parameter stabilization has occurred, in-line meters will be removed prior to sample collection. Flow rates will be reduced to 100 to 250 milliliters per mi nute (mL/min) for sample collection. Sampling order, bottle type, and preserva tives follow protocol set by the NJDEP Field Sampling Procedures Manual (August 2005). The correct bo ttle filling order for analytical parameters is included as Table 2. Sample containers are prepared together with preprinted chains-of-custody by or under supervision of DuPont. The container type and preservatives specified in SW846, 3r d Edition, Update IV, or 40 CFR 136.3, are employed and summarized in Table 3. Sample field parameters, pH, redox, specific conductance, temperat ure, and dissolved oxygen, are measured within 15 minutes of samp le collection, and this analysis time is noted in the field logbook (see Appendix B). General characteristics (color, odor, and turbidity) of each sample are also recorded. Dissolved metals are field filtered using a 0.45-micron filter and peristaltic pump or inline system.

3.4.3 Leachate Sampling Procedures
Leachate samples from Sump 2 (274) and Sump 3 (276) are collected with a laboratorycleaned Teflon scoop. The Teflon scoop is placed directly under the discharge pipe. The first scoop of leachate is used to sample VOCs. Sample bottles are filled directly from the
scoop. Leachate samples from Sumps 5A, 5B, and 7 ar e collected directly from the sample tap. The first sample bottles filled are for VOCs. Sampling order, bottle type, and preserva tives follow protocol set by the NJDEP Field Sampling Procedures Manual (August 2005). The correct bo ttle filling order for analytical parameters is included as Table 2. Sample containers are prepared togetherQuality Assurance Project Plan/ Sampling and Analysis Plan Sampling and Analysis Plan

008221_2010_28_10QAPPSAP-final.doc 16 Newark, DE with preprinted chain-of-custody document ation by, or under supervision of, DuPont. The container type and preservatives speci fied in SW846, 3rd Edition, Update IV, or 40 CFR 136.3 are employed and summarized in Table 3. Field parameters, pH, redox, specific conducta nce, temperature, and dissolved oxygen, are measured within 15 minutes of sample colle ction, and the analysis time is noted in the field logbook (see Appendix B). Ge neral characteristics (e.g., color, odor, and turbidity) of each sample are also recorded.

3.4.4 Additional Procedures for PFOA Samples
The laboratories will provide pre-cleaned and certified high density polyethylene (HDPE) or polypropylene bottles in coolers. The sample bottles in the field wi ll not be pre-rinsed with the water to be sampled. Field samplers will fill the bottles to the shoulder of the container. In order to minimize the possi bility of introducing contam ination into samples, the following field protocols will be followed by the field personnel:

 Avoid fluoropolymers.

 Avoid aluminum foil.

 Do not use Post-it Notes.

 Avoid blue ice.

 Avoid pre-wrapped foods or snacks.

 Wear clothing that has been washed at least six times. The samples will be shipped by overnight courier with wet ice and not blue ice.


### 3.5 Equipment Decontamination Procedures

Dedicated sampling equipment, Teflon bailers, Teflon scoops, and foot valves are laboratory-cleaned in the following manner: 1. Wash with laboratory-grade gla ssware detergent plus tap water. 2. Rinse with tap water. 3. Rinse with distilled, deionized (ASTM Type II) water. 4. Rinse with 10% nitric acid. (A10% hydrochl oric acid rinse may be substituted if analyzing for nitrogen species). 5. Rinse with distilled/deionized (ASTM Type II) water. 6. Rinse with acetone (pesticide grade). 7. Air dry completely. 8. Rinse with distilled/deionized (ASTM Type II) water. Teflon bailers are wrapped in aluminum foil and stored in polyethylene bags. Aluminum foil is oven baked at 105°C. Foot valv es are stored in polyethylene bags.Quality Assurance Project Plan/ Sampling and Analysis Plan Sampling and Analysis Plan

008221_2010_28_10QAPPSAP-final.doc 17 Newark, DE Portable bladder pumps and submersible pumps are cleaned and flushed with water prior to each use. Bladder pumps are disassembled and washed with a laboratory-grade glassware detergent and rinsed with distil led/deionized water. Pumps and cables are washed with a laboratory-grade glassware dete rgent and rinsed with distilled/deionized water. Two-inch diameter submersible pumps are flushed with 10 gallons of water. Fourinch diameter submersible pumps are flushed with 20 gallons of water. After the pumps are flushed with water, they are rins ed with distilled/deionized water. Centrifugal and peristaltic pumps are equi pped with check valves and do not require cleaning between uses. New polyethylene tubing (used for purging) is cleaned with a laboratory-grade glassware detergent and rinsed with dist illed/deionized water and stored in polyethylene bags prior to use. Water-level indicators, oil/water in terface probes, and stainless-steel weighted tapes are cleaned prior to use with a labor atory-grade glassware detergent wash and a distilled/deionized water rinse.


### 3.6 Health and Safety

Fieldwork will be conducted in accordance with the current site-specific health and safety plan(s).


### 3.7 Waste Management

The entire Chambers Works site has a Disc harge to Groundwater permit; therefore, well purge and development water are discharged at the site sump in accordance with the existing groundwater waste profile and the permit-by-rule and do not need additional approval from NJDEP. Used personal protective equipment (PPE) and other disposable materials (including disposable sampling equipment) will be contai nerized and disposed of in accordance with all applicable federal, state, and local regul ations governing waste di sposal as described in the current waste management plan.Quality Assurance Project Plan/ Sampling and Analysis Plan Custody and Documentation

008221_2010_28_10QAPPSAP-final.doc 18 Newark, DE 

## 4.0 Custody and Documentation

This section describes the procedures and processes that will be followed to document sample control during the event.


### 4.1 Field Logbook

The sampling team will maintain a logbook for deta il descriptions of the field activities. The signature of the author and date of entry, the project name and number, and the sampling location will accompany all entries in to the logbook. Information to be entered into the log book includes, but is not limited to, the following:

 Date and time

 Locations to be sampled

 Weather conditions

 Field team members present

 Observations of field activities taking place,

 Summary of equipment preparation procedures

 Description of any equipment probl ems, including corrective actions

 Deviations from the SAP


### 4.2 Sample Custody Documentation

Sample COC will be initiated in most cases by the laboratory with the selection and preparation of sample containers. To reduce the chance for error, the number of personnel assuming custody of the samples and sample containers will be held to a minimum. On-site monitoring and sampling data will be controlled and entered onto appropriate records. Personnel involved in the COC and tr ansfer of samples will be trained on the procedures and their importance a nd purpose prior to sampling initiation. COC procedures are intended to maintain and permanently document sample possession from the time of collection to disposal in accordance with EPA guidelines. A sample is considered to be under a person’s custody if one of more of the following occurs:

 The sample is in that person’s possession.

 The sample is in that person’s view, af ter being in that person’s possession.

 The sample was in that person’s poss ession and was locked up by him/her to prevent tampering.

 The sample has been placed in a de signated secure area by that person.Quality Assurance Project Plan/ Sampling and Analysis Plan Custody and Documentation

008221_2010_28_10QAPPSAP-final.doc 19 Newark, DE 4.2.1 Field Sample Chain-of-Custody
A COC form will accompany the sample container from the initial sample container selection and preparation at the laboratory to sample collection and preservation in the field to the return of the samples to the laboratory. The COC form will trace the path of each individual sample container by means of a unique identification number. When requested, sample designation/location numbers will be pre-printed by the laboratory on the COC form and bottle labels. The project manager or field team leader will notify the laborat ory of upcoming field sampling activities and the subsequent transf er of samples to the laboratory. This notification will include information concerning the number and type of samples to be shipped as well as the anticipated date of arrival. Sample shipping containers (i.e., shuttles) will be provided by the laboratory. The shipping containers will be insulated. A sample container partially filled with water will be included in each shuttle to serve as a temperature blank. Sample bottles within each shipping container will be individually controlled and labeled. Sample identification labels will be provided by the laboratory. Sample bottle labels will incl ude the following information:

 Site name

 Sample number

 Analysis required

 Preservatives

Shuttles with broken seals will be returned to the laboratory with the contents unused, assuming the cooler is intact. Field personnel receiving the sample containers will verify the integrity of the seals on each cooler. The receiving personnel will break the seal, inspect the contents for breakage, and sign th e COC form to certify receipt of the sample containers. A temporary seal then will be affixed to each cooler. Once sample containers are filled, they will be placed immediately in the cooler on ice to maintain the samples at approximately 4°C (not frozen to 6°C). The field sampler will indicate the sample designation/location number in the space provided on the COC custody form for each sample unless COC forms are preprinted. The field sampler will enter th e date and time of sample collection. The COC forms will be signed and placed in the cooler. The samp les should be shipped to the laboratory on the same day as they were collected and will be delivered to the laboratory no later than 72 hours after sample collection. The cooler with samples will be shipped to the laboratory using an overnight express serv ice or the laboratory’s same day express courier service.

The “remarks” column of the COC form will be used to record specific considerations associated with sample acquisition such as sample type, container type, sample preservation methods, analysis to be performed, and the possible need to dilute the sample due to indication of high levels of contamination. The source of reagents, field blank water, and supplies will be document ed on the COC form or the field notebook. The laboratory will maintain a file of the completed original forms. Copies will beQuality Assurance Project Plan/ Sampling and Analysis Plan Custody and Documentation

008221_2010_28_10QAPPSAP-final.doc 20 Newark, DE submitted as part of the final analytical repo rt. If samples are split and sent to different laboratories, each sample will receive a unique COC form.

4.2.2 Laboratory Sample Custody
Receiving, storing, and tracking samples submitt ed to the laboratory will be conducted according to laboratory SOPs intended to ensu re that invalid labor atory data resulting from sample contamination, loss, deteriorat ion, or tampering has not occurred. Internal laboratory COC procedures wi ll follow laboratory SOPs.Quality Assurance Project Plan/ Sampling and Analysis Plan Analytical Methods and Data Quality

008221_2010_28_10QAPPSAP-final.doc 21 Newark, DE 

## 5.0 Analytical Methods and Data Quality

5.1 Analytical Methods

Samples collected at Chambers Works will be analyzed by DuPont-approved laboratories (listed in Section 2.0). As st ated previously, samples are collected for five separate programs under NJPDES DGW Permits Nos. NJ0105872 and NJ0083429. The groundwater samples will be analyzed usi ng EPA document SW-846 and other methods for either EPA Target Analyte or Compound List (TAL/TCL) or the priority pollutant list (PPL) as specified in the permits or othe r work plan documentation. Samples may be analyzed for volatile organic analytes (VOAs), semi-volatiles organic analytes (SVOAs), metals and other various wet chemistry para meters (e.g., pH as a field parameter). One sample from the RCRA Post-Closure Monitori ng Program is also analyzed annually for 209-polychlorinated biphenyls (PCBs) conge ners. Monitoring wells are sampled semiannually and analyzed for a list of thirteen perfluor ochemicals (PFCs), including perfluorooctanoic acid (PFOA). One permitted outfall wastewater grab sample is collected weekly and analyzed for PFOA only. Ta bles 1-1 through 1-6 de scribe the list of compounds to be analyzed for the various monitoring programs. The analytical methodologies are described in Table 4. The laboratory will provide summary level reports, which will include final results, quality control results, and COC information. Upon request, raw data generated by the laboratory or an exact copy of the raw data will be submitted to NJDEP. Analytical results will be reported to the method detection limit (MDL). Results greater than the MDL but below the practical quantit ation limit (PQL) will be qualified J by the laboratory and should be considered to be estimated values. PFOA results are reported


### 5.2 Quality Control

As part of the QA program, samples will be collected and prepared in the field and laboratory to provide control over the collection of environmental measurements and subsequent review, interpretation, and validati on of generated analytical data. Two types of field QC samples will be prepared or collected: field (e .g., equipment rinsate) blanks and field duplicate samples. The two types of QA samples are discussed in more detail below. Split samples may also be collected by third parties.

5.2.1 Field Blanks
Field blanks will be collected at a rate of one per day per matrix when sampling equipment is not required. These blanks will provide a check on possible sources of contamination such as sample bottle preparation, blank water quality, and sample handling. Field blanks will also be used to indicate potential contamination from ambient air. Field blanks will be collected for aqueous samp les using two identical sets of pre-cleaned sample containers. One set of containers wi ll be empty and will serve as the sampleQuality Assurance Project Plan/ Sampling and Analysis Plan Analytical Methods and Data Quality

008221_2010_28_10QAPPSAP-final.doc 22 Newark, DE containers to be analyzed. The second set of containers will be filled at the laboratory with laboratory demonstrated analyte-free water. The water will originate from one common source and physical location within th e laboratory and will be the same water as the method blank water used by the laboratory. Field blanks will be handled, transported, and analyzed in the same manner as the samples acquired on the same day. After samp ling at the suspected most impacted field location, a bottle to bottle transf er of the blank water will take place in order to collect a field blank sample. The rationale for colle cting equipment rinsate samples from the suspected most impacted area is to simulate a worst-case scenario regarding ambient air contributions to the sample concentration. Field blanks will be returned to the laboratory with the same set of sample bot tles they accompanied to the field. Other guidelines for the use and integrity of field blanks include the following:

 Field blank water samples will be returned to the laboratory so that no more than four days have passed since the sample bottles were transferred from the laboratory to the field.

 The clock governing analytical holding times for field blanks will begin at the time of sample collection.

 Field blanks will be collected and analyzed at a minimum rate of at least one per day or at a rate of 1 blank for every 20 samples per matrix each day for samples collected without the use of sampling equi pment. Field blanks will be analyzed for the same parameters for which the environmental samples collected that day are analyzed.

 Field blanks will be handled, transported, and analyzed in the same manner as the samples acquired that day.

5.2.2 Equipment Blanks
Equipment blanks will be coll ected at a rate of one per day per matrix when sampling equipment is used. These blanks will provide a check on possible sources of contamination such as sample bottle preparation, blank water quality, and sampling handling. Equipment blanks will also be used to indicate potential contamination from sampling equipment used to co llect and transfer samples. Equipment blanks will be collected for so lid and aqueous samples using two identical sets of pre-cleaned sample containers. One set of containers will be empty and will serve as the sample containers to be analyzed. The second set of containers will be filled at the laboratory with laboratory demonstrated analyt e-free water. The water will originate from one common source and physical location within the laboratory and will be the same water as the method blank water used by the laboratory. Equipment blanks will be ha ndled, transported, and analyzed in the same manner as the samples acquired on the same day. After samp ling at the suspected most impacted field location, analyte-free water will be rinsed over decontaminated sampling equipment and placed in the empty sample cont ainer for analysis (it may be necessary for the laboratory to provide extra water to ensure sufficient vo lume of blank water to eliminate headspace).Quality Assurance Project Plan/ Sampling and Analysis Plan Analytical Methods and Data Quality

008221_2010_28_10QAPPSAP-final.doc 23 Newark, DE The rationale for collecting equipment rinsate samples from the suspected most impactedarea is to simulate a worst-case scenario regarding sampling equipment crosscontamination contributions to the sample concentration. Equipment blanks will be returned to the laboratory with the same se t of sample bottles they accompanied to the field. Other guidelines for the use and integrity of equipment blanks include the following:

 Equipment blank water samples will be retu rned to the laboratory so that no more than four days have passed since the sample bottles were transferred from the laboratory to the field.

 The clock governing analyti cal holding times for equipm ent blanks will begin at the time of sample collection.

 Equipment blanks will be co llected and analyzed at a minimum rate of at least one per day or at a rate of 1 blank for ev ery 20 samples per matrix on each day that sampling equipment is used. Equipment blanks will be analyzed for the same parameters for which the environmental sa mples collected that day are analyzed.

 Equipment blanks will be handled, transported, and anal yzed in the same manner as the samples acquired that day.

5.2.3 Field Duplicate Samples
Collecting duplicate samples allows for the evaluation of the labor atory’s performance by comparing the analytical results of two samp les from the same location. Duplicates will be collected for all media sampled. Although moisture content, particle size, and adsorption properties of the various soil types in hibit the ability to achieve replicability, soil duplicate samples will be collected. Duplic ates will be collected for all media at a rate of 1 duplicate per 20 samples or one per sampling event per matrix. Duplicates of all media sampled will be obtai ned by alternately filling sample containers from the sample source for each parameter. VO C sample containers, if any, will be filled from the same aqueous sample retrieval device and will be the first set of containers filled. Sample locations for duplicate soil sample s will be selected to ensure collection of representative samples and sufficient sample volume to fulfill all QA/QC protocols.

5.2.4 Split Samples
To maintain the integrity of any samples spl it with other parties, the primary contractor personnel will collect all samples using thei r equipment. Other pa rties, if any, will provide their own equipment (e.g., sample cont ainers, blank containe rs, preservatives, COC forms).

5.2.5 Laboratory Blank Samples
Analytical results for laborator y blanks provide a means to ev aluate laboratory precision and bias, and other potential contamination and carry-over problems. Laboratory blanks are carried through applicable sample prepar ation and analysis procedures. Laboratory blanks are analyzed for target compounds or parameters and must be less than the PQL.Quality Assurance Project Plan/ Sampling and Analysis Plan Analytical Methods and Data Quality

008221_2010_28_10QAPPSAP-final.doc 24 Newark, DE 5.2.6 Trip Blank Samples
Trip blanks, analyzed for volatile sample s, will remain unopened in the shipping container (shuttle or cooler) during the sa mpling event and return ed unopened to the laboratory from the field in the same cooler that contains the associated volatile samples collected.

5.2.7 Laboratory Control and Replicate Samples
Laboratory Control Samples (LCS) Laboratory control samples (LCS) are analyte-free water or solid matrices that are spiked at the level or levels spec ified in the laboratory SOP. The LCS is carried through the entire sample preparation and analysis procedures. LCS results are used to assess method/laboratory accuracy. The LCS is not the continuing calibration verification or check standard analysis. Laboratory Replicate Samples Laboratory duplicates, or replic ates, are generated in the la boratory and analyzed to assess method/laboratory precision in the matrix of concern. Laboratory Matrix Spikes Matrix spikes provide information about th e effect of the sample matrix on the preparation and measurement methodology. Matrix spike samples are spiked and analyzed by the laboratory to facilitate identifi cation of effects of the particular matrix of interest on analytical results , particularly, biasing of results. Sufficient sample volume will be collected for at least 1 sample in each batch of 20 or fewer field samples so that matrix spike samples can be prepared for analysis. Laboratory Surrogates Surrogate recovery data are used to evalua te the precision of the analytical method on a sample specific basis. Surrogates are com pounds similar to the target analytes in chemical composition and behavior but are not normally found in the environmental samples. Surrogates, when used, are spiked in to all field samples and laboratory quality control samples. Laboratory Internal Standards Internal standard areas are used to correct sample results affected by losses in the analytical system. Internal standards are measured amounts of compounds not normally found in environmental samples.


### 5.3 Quality Assurance Objectives

To ensure that the data collected is of ad equate and consistent quality, data quality objectives (DQOs) in terms of precision, accuracy, and completeness have been established. The sampling and analysis and a ssociated QA efforts are aimed at achieving these DQOs in a timely, cost-effective, and safe manner. Previous data collected provides baseline information for the facility.Quality Assurance Project Plan/ Sampling and Analysis Plan Analytical Methods and Data Quality

008221_2010_28_10QAPPSAP-final.doc 25 Newark, DE DQOs are statements of the level of uncertainty that a decision-maker is willing to accept in results derived from environmental m easurements. The uncertainty for sample parameter results may arise from a comb ination of factors, including sampling procedures, sample matrix characteristics, non -homogeneity of samples, and the inherent accuracy and precision limitations of anal ysis methods. DQOs are quantitatively and qualitatively described in terms of data qua lity characteristics (DQCs), which include precision, accuracy, represen tativeness, completeness, and comparability. These characteristics are defined as follows:

 Representativeness Representativeness expresses the degree to which sample data accurately and precisely represents a selected characteri stic of a population, parameter variations at the sampling point, a process cond ition, or an environmental condition.

 Comparability Comparability expresses consistency in sampling and analytical procedures so that one data set can be compared to another.

 Accuracy Accuracy is the degree of agreement of a measurement with an accepted true value.

 Precision Precision is defined as the agreement be tween numeric values for two or more measurements that have been made in an identical fashion.

 Completeness Completeness is a measure of the amount of the usable data obtained from the measurement system compared to the amount that was expected under normal conditions.

5.3.1 Data Quality Objective
The purpose of the project is to characteri ze groundwater and leachate samples in and around Chambers Works. DQOs have been esta blished for this project. The precision, accuracy, and completeness acceptance criteri a required for the monitoring project are listed in Table 5.

All measurement data will be calculated and re ported in units consistent with specified methodologies to ensure comparability of historical data.

5.3.2 Representativeness
Representativeness expresses the degree to whic h data accurately and precisely represents a measured characteristic of a population, pa rameter variations at the sampling point, a process condition, or an environmental condi tion. The degree of re presentativeness is dependent on the objectives of the measurement results.Quality Assurance Project Plan/ Sampling and Analysis Plan Analytical Methods and Data Quality

008221_2010_28_10QAPPSAP-final.doc 26 Newark, DE Representativeness can be classified into the following four objective levels:

 Level 1 Sample is only representative of the point of sampling (e.g., drum, storage tank, and single point within a stream or land area).

 Level 2 Sample is part of a set an d represents a defined area or portion of land or water - not just the point of sampli ng (e.g., stream transect, sampling grid of a land area, underground aquifer).

 Level 3 Sample represents a relationship between the source of contamination and the location sampled (e.g., source and monitoring well, source and stream).

 Level 4 Sample is a non-representative sample used for assessment purposes only (e.g., preliminary assessment, spot check). The objective of the sampling, monitoring, a nd analysis will be that results are representative of the medium investigated (e.g., groundwater, leachat e) and its condition to a degree consistent with the desired object ive level. Objective Levels 1, 2, and 3 as described above will be used to accomplish the project objectives.

5.3.3 Comparability
For this project, all measurement data will be calculated and reported in units consistent with standard practice to allow comparability of new and future data. Data comparability also includes seasonal trends. The project will use results generated by promulgated methods and appropriate laboratory SOPs. The current and future use of these methods will allow data produced to be comparable to data generated during s ubsequent sampling and analysis programs.

5.3.4 Accuracy
Accuracy means the nearness of a result or the mean of a set of results to the true value. Accuracy is assessed by means of reference sa mples and percent recoveries. Accuracy for this project will be quantitatively assessed by evaluating relative percent recoveries of items such as matrix spike and laboratory control spike samples. Accuracy will be qualitatively assessed by evaluating instrume nt performance checks and field blanks. To determine the accuracy of an analytical me thod, a program of sample spiking will be followed. The spiking frequency will be as stat ed in the referenced SOP. The results of sample spiking will be used to calculate the QC parameter (i.e., percent recovery) for accuracy evaluation.Quality Assurance Project Plan/ Sampling and Analysis Plan Analytical Methods and Data Quality

008221_2010_28_10QAPPSAP-final.doc 27 Newark, DE The following equation will be used:

% Recovery = SSR - SR
SA = x 100

Where, SSR = Spiked sample result SR = Sample result SA = Spike added The frequency for the spiking is per the laboratory SOP.

5.3.5 Precision
Precision means the measurement of agreem ent of a set of replicate results among themselves without assuming any prior informa tion as to the true result. Precision will be quantitatively assessed by evaluating rela tive percent difference values for field duplicates and laboratory replicates. To dete rmine the precision of the analytical method, a program of replicate analyses will be followed. The laboratory will split a sample into two subsamples and analyze each independently at the frequenc y listed in the appropriate method. A comparison of results of field duplicates will assist in evaluating the overall representativeness of the data. The results of the replicate analysis will be used to calculate the QC parameter [relative percent difference (RPD)] for precision eval uation. The following equation is used to calculate RPD:

RPD = D - D (D + D ) / 2 1 2

1 2 = x 100

Where,

D 1 is defined as the first subsample value

D 2 is defined as the second subsample value

The frequency of laboratory replicates is desc ribed in the laboratory SOP. In addition to evaluating the method precision, duplicate or sp lit samples will be collected in the field and analyzed independently. These results will be used to evaluate the total system’s variability, including sampling variations. The identity of the fiel d splits will not be known by laboratory personnel. The analytical precision produced by laborator y replicate analyses will be evaluated by both the laboratory and DuPont, while field sp lits will be evaluated only by DuPont. The evaluation of both types of data will be in accordance with the referenced SOP and this plan.Quality Assurance Project Plan/ Sampling and Analysis Plan Analytical Methods and Data Quality

008221_2010_28_10QAPPSAP-final.doc 28 Newark, DE 5.3.6 Completeness
Completeness will be determined following periodic evaluation of the accuracy and precision results of the project data sets.

Valid Data
Total Data Generated = % Complete x 100

Usable data will be determined in accordance with the referenced method (see Section 5.1). The percent complete will be used to determine whether the data quality meets the objectives for the investigation. If the completeness objectives are not met fo r individual parameters, the reasons for the invalid data will be reviewed by DuPont. Su ch a data gap could result from sample container loss or sample custody not be ing maintained. Depending on the reasons (e.g., holding time exceeded) and the effect of the incomplete data on the accomplishment of the monitoring objectives, additional samples may be collected and analyzed.


### 5.4 Instrument/Equipment Testing, Inspection, and Maintenance

The purpose of this section is to specify pro cedures used to verify that instruments and equipment are maintained in sound operating condition and are capable of acceptable performance. A program will be implemented to ensure that routine calibration and maintenance is performed on all field instruments.

5.4.1 Instrument /Equipmen t Testing and Inspection

Field Instruments A calibration program will be implemented to ensure that routine calibration and maintenance is performed on all field instruments. Field team members familiar with the calibrations and equipment operations w ill maintain instrument proficiency by performing the prescribed calibration procedures outlined in the instruments operation field manuals, which should accompany the monitoring equipment. Air monitoring instruments (e.g., PID or FID) used in the field to collect data for sample screening and health and safety purposes will, at a minimum, be calibrated each day prior to the initiation of fieldwor k using the manufacturer’s ma nual and appropriate zero and indicator gases. Water monitoring inst ruments (e.g., pH conductivity, temperature meters) will be calibrated prior to each day’s use according to the manufacturer’s instructions. More frequent calibrations w ill be preformed as necessary to maintain analytical integrity.

Calibration records for each field instrume nt used during the investigation will be maintained, and copies of the records will be stored in the project QA files.
Laboratory Instruments Calibration of the analytical equipment will be performed according to the laboratory SOPs. If calibration results do not meet the cr iteria listed in the SOP, then appropriateQuality Assurance Project Plan/ Sampling and Analysis Plan Analytical Methods and Data Quality

008221_2010_28_10QAPPSAP-final.doc 29 Newark, DE steps must be taken to adjust instrument opera tion and the standards or the relevant set of samples should be reanalyzed.

5.4.2 Instrument/Equipment Maintenance
Field equipment will be subjected to a routine maintenance program before and after each use. The routine maintenance program for each piece of equipment will be in accordance with the manufacturer’s operations and maintenance manual. All equipment will be cleaned and checked for integrity after each use. Repairs will be performed immediately after any defects are observed and before th e equipment is used again. Equipment parts with limited life (e.g., batteries, membranes, and some electronic components) will be periodically checked and replaced or r echarged as necessary according to the manufacturer’s specifications. Equipment will be properly stored when not in use. Laboratory equipment maintenance will be regularly performed by the subcontracted laboratory. It will be the laboratory’s res ponsibility to maintain and document the maintenance of properly functioning equipm ent so that the data are usable and reproducible. Upon request, a description of the laboratory’s equipment and maintenance procedures will be provided to either DuPont or URS.

5.4.3 Acceptance Requirements for Supplies and Consumables
The purpose of this section is to establish a system for inspecting and accepting supplies and consumables that may affect the quality of the project data. Laboratory or field consumables or supplies that will come into contact with samples must be documented to be free of contamination prior to use. Ex amples of consumables and supplies include latex/nitrile gloves, glassware, soap or deterg ent, sample containers , reagents, and reagent
water. Field consumables and supplies are also de monstrated to be free of contamination through the collection of equipment blanks. Laboratory consumables and supplies are demonstrated to be free of contamination through the preparati on and analysis of laboratory blanks. The laborat ory Quality Assurance Manual should identify critical laboratory supplies, such as calibration gases or standards, solvents or reagents, and the acceptance criteria for these supplies.Quality Assurance Project Plan/ Sampling and Analysis Plan Documentation

008221_2010_28_10QAPPSAP-final.doc 30 Newark, DE 

## 6.0 Documentation

6.1 Logbook and Forms
Laboratory and field records shall be mainta ined by appropriate personnel and shall be sufficiently detailed to allow for reconstr uction of the collecti on, handling, preparation, and analysis procedures pe rformed on the samples. These procedures shall be documented in logbooks or on forms. It is suffi cient to identify the SOPs and record any deviation from the SOPs in the field logbooks. Entr ies will be legible. If errors are made, the error will be crossed out with a single line, initiale d, and dated by the person making the correction. Maintenance and calibration records must be traceable to the person using the instrument and to the specific instrument.


### 6.2 Laboratory Deliverables

The laboratory project manager will provide the data package described below to the project chemist within the specified turnar ound time. Each data package should contain the COC forms, and the reportable and supportin g data described below. Electronic files of laboratory data packages for analyses w ill be provided to the NJDEP in Hazsite data deliverable format. The hard copy laboratory data package will be provided from each laboratory to DuPont or its contractor URS Corpor ation with the following:

 Copies of completed field COC forms and documentation, including forms used by the laboratory to document sample condition upon receipt.

 Sample identification cross-reference information that will facilitate the correlation of laboratory sample ID with field samples and laboratory batch.

 Easy and unambiguous means of associat ing a specific QC sample (blank, MS, MSD) with specific field samples.

 Copies of sample test reports that provi de specific information for each sample regarding analytical results and methods:

 Analytical results should be adjusted for sample characteristics, laboratory preparations/cleanups, and /o r laboratory adjustments.

 All analyte detections above the MDL will be reported.

 Copies of the data package will include surrogate data as applicable to the analytical method and should include the percent recovery (%R) and the laboratory’s QC limits.

 Copies of the test reports or summary forms for all blank samples pertinent to sample analyses. Sample data should not be blank corrected.

 Copies of the data package, includin g the LCS test reports or LCS summary forms. A LCS should be included in ev ery preparation batc h and taken throughQuality Assurance Project Plan/ Sampling and Analysis Plan Documentation

008221_2010_28_10QAPPSAP-final.doc 31 Newark, DE the entire preparation, cleanup, and anal ysis procedures. The LCS form should include the amount of each analyte a dded, the % R of the amount measured relative to amount added, and the QC limits for each analyte.

 Copies of the MS summary forms, including the following:

 Identification of the com pounds in the spike solution

 Laboratory batch number

 Laboratory identification number of the sample spiked

 Amount of each compound added to the MS

 Parent sample concentration

 Concentration measured in the MS

 Calculated %R

 QC limits for the %R

 The laboratory will submit EDDs in a format suitable for input into the Envista database, and the project chemist will manage the data and support transfer of the data into NJ Hazsite format.


### 6.3 Archival Requirements

Laboratory reports and electronic data will be archived by the laboratory for a minimum of ten years and made available by the labor atory upon request by the regulatory agencies or DuPont. Field records will be archived by DuPont for a minimum of ten years from the date of report submittal and made availa ble upon request by the regulatory agencies. Software and hardware used to generate, stor e, and retrieve the records shall be kept on file with the records. Samples and sample extracts are held at th e laboratory for a lim ited period of time following the laboratory report generation (e.g., 30 days) in accordance with the individual laboratory’s SOP and practical space constraints.



### 6.4 Data Reduction

Data reduction involves the pr ocess of generating qualitati ve and quantitative sample information through observations, field procedures, analytical measurements, and calculations. Data reduction step s include field operations, laboratory operations, and report preparation operations. The da ta reviewed are as follows:

 Work plan through sample locations and naming conventions

 Field sampling process by using fi eld logs and field measurements

 Field communications with the labora tory in sample analysis requests

 Field operations with collection, preservation, and COC documentation

 Laboratory operations with sample receip t and handling, sample preparation and analysis, collation of raw data, and gene ration of laboratory analytical resultsQuality Assurance Project Plan/ Sampling and Analysis Plan Documentation

008221_2010_28_10QAPPSAP-final.doc 32 Newark, DE  Post-laboratory operations with the collati on of analytical results in a format suitable for documents such as reports, maps, and trend plots The review performed on the data at each level will be documented, beginning with the laboratory’s review of the an alytical results through th e independent data review performed by the data user, and finally revi ew by the appropriate agency. The intent of the data reduction steps is to capture th e review effort of each party to minimize duplicative efforts, to ensure that critical elements of the review process are not overlooked, and to set in place a system that can be audited or inspected.


### 6.5 PFOA Data Reporting

Final PFOA or PFC results reported by the la boratories in the summary section of their reports will include a limit of detection (LOD) and limit of quantitiation (LOQ) for each sample or sample set. Results below the LOD will be reported as not detected (ND). Results between the LOD and LOQ will be reported as not quantifiable (NQ). Results at or above the LOQ will be reported as numerical values. Reported concentrations will not be correct ed for contaminants found in associated method and field blanks. Deliverables will incl ude a narrative and appropriate laboratory raw data and QC summary forms. The laboratory will report results for a laborator y replicate of each soil or aqueous field sample, or a minimum of one per batch. These results will be evaluated for precision by comparing the field sample result to the corresponding laboratory replicate result:

 If both results are less than the LOQ, th e replicate sample for that analyte is considered to have passed the precision criteria.

 If one or both results are between one and five times the LOQ, the replicate is considered to have met the criteria if the two results differ by less than the LOQ.

 If one result is less than the LOQ and the other is not, and if the two results differed by a value less than the LOQ, th e replicate is said to have met the acceptance criteria.

 Finally, if both results are at least five times the LOQ, the replicate is considered to have met the criteria if the relative percent difference (RPD) between the two results is less than or equal to 20%. RPD is the absolute value of the difference of two measurements divided by their average. When the precision criteria outlined above is me t, the average of the field sample and lab replicate results is reported in the summary re sults section of the repo rt by the laboratory. If criteria for precision are exceeded, the higher of the sample and lab replicate results will be reported in the summary results secti on of the report by the laboratory. Finally, when one result (from the sample/lab replicate pair) is above the LOQ and one below, the result which is above the LOQ will be reported in the summary results section by the laboratory. The summary results section of the report includes the individual sample results. In addition to the results reported in the summary sec tion of a report, the laboratory will also include, as part of the repor t, a data package that contains all raw data for the sampling effort.Quality Assurance Project Plan/ Sampling and Analysis Plan Documentation

008221_2010_28_10QAPPSAP-final.doc 33 Newark, DE Laboratory reports include both fi eld sample and lab replicate results in a result summary sheet; a separate resu lt summary sheet includes the above criteria and final results for each sample. All data will be provided to DuPont in a draft data package by the laboratory. The draft data package includes raw data and will be reviewed by an internal DuPont team for compliance with the laborator y SOP and usability according to prepared checklists. Draft results and the supporting ra w data will not be deleted or discarded. Comments from review of the draft data pack age will be provided to the laboratory who will generate a final laboratory data package.



### 6.6 Data Verification

Data verification is the proce ss of verifying that qualitative and quantitative information generated relative to a given sample is complete and accurate.

6.6.1 Laborat ory Review
The laboratory utilized for this monitoring will have implemented a quality assurance program that meets the requirements of a rec ognized organization such as an appropriate state agency (NJDEP Certif ication), National Environmen tal Laboratory Accreditation Program (NELAP), or International Orga nization for Standardization (ISO). The laboratory will review the data for technical acceptance. The laboratory analyst is responsible for th e reduction of raw data and will clearly identify any problems or anomalies that might affect the quality of the data. The analyst will review 100% of the data a nd will verify that data reduc tion protocols are correct. At least 10% of the data will be reviewed independently by a senior analyst or by the supervisor of the laboratory analyst. Both th e analyst and independent review will include the following:

 Calibrations and calibration verifications

 Instrument and system performance checks

 Blanks

 LCS recoveries and precision

 MS/MSD recoveries and precision

 Duplicate sample precision

 Compound identification and quantification

 Surrogate recoveries, if applicable

 Internal standard areas, if applicable

 Serial dilutions, if applicable

 Interference check sample results, if applicable

 Post digestion spike rec overies, if applicable The laboratory QA personnel will review the completed data packages and perform a reasonableness check review on the comple ted data packages. The QA personnel willQuality Assurance Project Plan/ Sampling and Analysis Plan Documentation

008221_2010_28_10QAPPSAP-final.doc 34 Newark, DE ensure that all deliverables are present that qualifiers have been applied to the data and that nonconformance and other issues have been addressed in the case narrative. Either the independent reviewer or the laboratory’s QA personnel will perform a QA check on 100% of hand entered data and 5% of electronically tr ansferred data. The laboratory will generate a final laboratory data package and an EDD. The EDD will be uploaded to the Envista (formerly CED) database. The internal DuPont QC review process will be performed on 100% of the data received from the laboratory. This process includes ve rification of laboratory reports against the associated chains-of-custody to ensure comple teness of all tests on al l samples submitted; verification of the accuracy of reports subm itted; verification of representativeness of field sample results by reviewing field and trip blank data; determination of data usability by reviewing matrix QC sample results and laboratory control sample results against laboratory QC acceptance criteria; verification of QC batch integrity to ensure method compliance; and verification of appropria teness of the comments accompanying the reports to ensure compliance. The DuPont In-House Data Review (DDR) will be performed on all data to evaluate data usability. The DDR is an automated internal review process used by the Analytical Data Quality Management (ADQM) group to determine if the data are usable. The data are run through this automated program where a series of checks are performed on the data. The data are evaluated against hold time criter ia, checked for blank contamination, assessed against MS/MSD recoveries, assessed agai nst relative percent differences (RPDs) between these samples, assessed against labor atory control sample (LCS)/control sample duplicate (LCSD) recoveries, assessed against RPDs between these samples, assessed against RPDs between laborat ory replicates, and assesse d against surrogate spike recoveries. The DDR applies the following data qualifiers to analysis results, as warranted.

Qualifier Definition B Not detected substantially above the leve l reported in the laboratory or field blanks. R Unusable result. Analyte may or may not be present in the sample. J Analyte present. Reported value may not be accurate or precise. UJ Not detected. Reporting limit may not be accurate or precise.
6.6.2 Laboratory Qualifiers
TAL –KNX may have applied one or more of the following da ta qualifiers to analysis results as warranted.

Qualifier Definition J Estimated value. Reported value is below the Estimated Minimum Level (EML) E Estimated value. Reported value is ab ove the Upper Calibration Level (UCL). B Analyte is present in the associat ed method blank at a reportable level. Q Estimated Maximum Possible Concentrati on (EMPC). Result is generated from data that does not meet all criter ia for a positive identification. S Ion suppression is evident. C Coeluting isomerQuality Assurance Project Plan/ Sampling and Analysis Plan Documentation

008221_2010_28_10QAPPSAP-final.doc 35 Newark, DE Other laboratories may have applied one or more of the following data qualifiers to analysis results, as warranted.

Qualifier Definition J Estimated value; result falls between method detection limit (mdl) and practical quantitation limit (pql). U Analyte was not detected at the specified reporting limit

These laboratory qualifiers are app lied independent of DDR qualifiers.


### 6.7 Statistical Analysis Reporting

Semiannually, the DuPont Chambers Works w ill submit a report detailing the applicable statistical review activities conducted during the year as pa rt of the semiannual status reports. Statistical analyses ar e conducted on all groundwater anal ytical data to satisfy the semiannual reporting requirements outlined in Part IV.F of the NJPDES-DGW Permit No. NJ0083429. Statistical anal yses are accomplished using the combined ShewartCUSUM control chart procedure for each we ll for all field and laboratory groundwater analytical data. Shewart-CUSUM control charts will help to identify if constituents in groundwater show statistically significant increases. In accordance with EPA guidance in Statisti cal Analysis of Groundwater Monitoring Data at RCRA Facilities, Interim Final Guidance (EPA, 1989) and the Addendum to Interim Final Guidance (EPA, 1992), control charts will be used for statistical analyses of the groundwater data. After each sampling ev ent, the control char t for each well and analyte is updated with recent analytical da ta. An assessment is made as to whether a statistically significant change in the groundwater quality has occurred. Data summary reports are presented for all the required pa rameters, and graphs are presented for all detected parameters in groundwater monito ring wells. Groundwater parameters with statistically significant increases duri ng the evaluation peri od are identified.Quality Assurance Project Plan/ Sampling and Analysis Plan Performance and System Audits

008221_2010_28_10QAPPSAP-final.doc 36 Newark, DE 

## 7.0 Performance and System Audits

Internal audits and assessments will be performed by the organization primarily responsible for conducting the task being audited. For example, DuPont CRG may conduct an assessment of field sample collecti on activities, and the contract la boratory will perform internal audits. Periodic reports detailing the results of QA/QC activities will be submitted to the projec t director through the project manager as required. These documents will include reports on the following:

 Significant deviations from prot ocol as stated in the QAPP

 Field system and performance audits

 Laboratory system and performance audits

 Corrective action and follow-up QA auditing will be performed under the direction and approval of the QA officer. The QA officer will plan, schedule, and approve system and performance (i.e., field) audits based on procedures tailored to project requirements. These audits will be implemented to verify, document, and enforce project performance objectives and subcontractor personnel and measurement system(s) protocols. At times, the QA officer may request additional personnel with specific expertise from within the company and/or project groups to assist in conducti ng the audit(s). Unannounced aud its will be performed as deemed necessary by the QA officer. The field audit will be conducted while measurement systems are operational, if possi ble. Project personnel are responsible, as part of the standard work duties to promptly identify and report conditions adverse to quality and implement the appropriate corrective action. When a significant condition adve rse to quality is noted in th e field, in the laboratory, or at the office, the cause of the condition will be determined, and corrective action will be initiated by the QA officer to preclude repetit ion. The nature and cause of the condition, reference documents, and planned corrective action(s) will be documented and report to the field team leader, project manager, QA officer, and involved subcontractor management, as appropriate. Corrective actions will be initiated, at a minimum, if the following occurs:

 Procedures or data are determined to be suspect; all field and laboratory procedures that are conducted and the guidance documents cited therein will be considered suspect. Data generated by these procedures will be considered suspect.

 Equipment or instrumentation is found to be faulty; equipment or instrumentation that does not operate according to manufact urer’s specifications and/or does not properly calibrate will be considered faulty.

 Representativeness of samples and test resu lts is questionable; results that conflict with on-site observations, other laborator y results, or historical and background data will be considered questionable. Questionable results will be considered non-representative of the conditions present at the sampling location.Quality Assurance Project Plan/ Sampling and Analysis Plan Performance and System Audits

008221_2010_28_10QAPPSAP-final.doc 37 Newark, DE  Quality assurance requirements have been violated.

 Design approvals have been circumvented.

 Field audits and/or management assessm ents result in the determination that corrective actions are necessary. Audit reports will be written by the auditor after gathering and evaluating all resulting data. Noncompliances will be logged, documented, and controlled through audit findings, which are attached to and made a part of an audit report. These audit findings will be directed to the project manager to resolv e the noncompliance in a specified and timely manner. The QA officer or designated audito rs will review (audit) field activities, laboratory reports, and office r ecords. Items, activities, or documents that are in noncompliance with QA requirements will be documented, and corrective action will be implemented. All findings will be logged, main tained, and controlled by the QA officer. All audit reports, audit findings, and accepta ble resolutions, will be approved by the QA officer prior to being issu ed. QA verification of acceptable resolutions may be determined by a follow-up audit or documented surveillance of the item or activity. It will be the project manager’s overall respons ibility to ensure that all corrective actions are acted upon promptly and satisfactoril y. Upon verification acceptance, the QA officer will close out the audit report and findings. Copies of all audit reports and audit findings will be maintained as part of the project file. The contract laboratories will be accredited by the state agencies and others, as appropriate. A technical systems audit of the laboratory is not planned.Quality Assurance Project Plan/ Sampling and Analysis Plan References

008221_2010_28_10QAPPSAP-final.doc 38 Newark, DE 

## 8.0 References

DuPont CRG, 2006. Preliminary Assessm ent Report (PAR).

DuPont CRG. 2005. Phase IV RCRA Facility Investigation Report

.

DuPont CRG. 2000. Environmental Data Quality Assurance and Quality Control Program . August 4, 2000.

DuPont Environmental Remedi ation Services (DERS). 1993. Groundwater Sampling and Analysis (GSA) Plan (Revision 1) . December 13, 1993.

EPA. 1992. Addendum to Interim Final Guidance

.

EPA. 1989. Statistical Analysis of Groundwater Monitoring Data at RCRA Facilities, Interim Final Guidance

.

NJDEP. 2005. Field Sampling Procedures Manual . August 2005.

URS. March 2010 . Chambers Works Discharge to Groundwater Permit – Semi-annual Quality Assurance Report, 2 nd Half 2009. DuPont Chambers Works

URS. February 3, 2010. Semi-Annual Statistical Review of Groundwater Monitoring Results, 2 nd Half 2009, DuPont Chambers Works

## TablesTable 1-1Corrective Action Monitoring Program - Basins Post ClosureQuality Assurance Project Plan With Sampling And Analysis PlanDuPont Chambers WorksDeepwater, New JerseySampling event: Jan 2009 Jul 2009 Jan 2010 Jul 2010 Jan 2011 Jul 2011 Jan 2012 Jul 2012 Jan 2013 Jul 2013 Jan 2014Sampling parameters: IND1 Basin IND1 Basin IND1 Basin IND1 Basin IND1 Basin IND1 Basin IND1 Basin IND1 Basin IND1 Basin IND1 Basin IND1 BasinClosure and G16-M02B SA -- SA TRiE SA -- SA -- SA -- SA -- SA -- SA TRiE SA -- SA -- SA --Post Closure H13-M02B SA -- SA TRiE SA -- SA -- SA -- SA -- SA -- SA TRiE SA -- SA -- SA --for the A, B, H14-M01B SA -- SA TRiE SA -- SA -- SA -- SA -- SA -- SA TRiE SA -- SA -- SA --& C Basins (7) H16-P01B SA -- SA TRiE SA -- SA -- SA -- SA -- SA -- SA TRiE SA -- SA -- SA --K13-M02B SA -- SA TRiE SA -- SA -- SA -- SA -- SA -- SA TRiE SA -- SA -- SA --J16-M01B SA -- SA TRiE SA -- SA -- SA -- SA -- SA -- SA TRiE SA -- SA -- SA --L14-M01B SA -- SA TRiE SA -- SA -- SA -- SA -- SA -- SA TRiE SA -- SA -- SA --Notes:FrequencySA = semiannuallyAnn = annuallyTRiE = triennially (every three years)-- not requiredAnalyte Lists (attached)IND1 = indicator parametersBasin = Basin Closure Monitoring Program Analyte List10/20/2010Page 1 of 2Table 1-1 -Basins.xlsTable 1-1Corrective Action Monitoring Program - Basin Post Closure AnalytesQuality Assurance Project Plan With Sampling And Analysis PlanDuPont Chambers WorksDeepwater, New JerseyBasin Closure Monitoring Program Analyte ListPriority Pollutant Volatile Organics Priority Pollutant Semivolatile Organics Additional ParametersBenzeneBase Neutral ExtractableDi-n-octyl phthalate AnilineBromodichloromethane Acenaphthylene Fluoranthene 4-ChloroanilineBromoform Acenaphthene Fluorene o-ToluidineBromomethane Anthracene Hexachlorobenzene TrichlorofluoromethaneCarbon tetrachloride Benzidine Hexachlorobutadiene XyleneChlorobenzene Benzo(a) anthracene Hexachlorocyclopentadiene Dissolved leadChloroethane Benzo(b) fluoranthene HexachloroethaneChloroform Benzo(k) fluoranthene Indeno(1,2,3-c,d)pyreneChloromethane Benzo(ghi) perylene IsophoroneDibromochloromethane Benzo(a) pyrene Naphthalene1,1-Dichloroethane bis(2-Chloroethoxy) methane NitrobenzenePriority Pollutant Total Metals:1,2-Dichloroethane bis(2-Chloroethyl) ether Nitrosodimethylamine Aluminum1,1-Dichloroethene bis(2-Chloroisopropyl) ether N-Nitroso-diphenyl amine Arsenictrans-1,2-Dichloroethene bis(2-Ethylhexyl) phthalate N-Nitroso-di-n-propylamine Beryllium1,2-Dichloropropane 4-Bromophenyl phenyl ether Phenanthrene Cadmiumcis-1,3-Dichloropropene Butyl benzyl phthalate Pyrene Irontrans-1,3-Dichloropropene 2-Chloronaphthalene 1,2,4-Trichlorobenzene LeadEthylbenzene 4-Chlorophenyl phenyl etherAcid Extractable(1)NickelMethylene chloride Chrysene 4-chloro-3-methylphenol Sodium1,1,2,2-Tetrachloroethane Di-n-butylphthalate 2-ChlorophenolTetrachloroethene Dibenzo (a,h) anthracene 2,4-DichlorophenolToluene 1,2-Dichlorobenzene 2,4-Dimethylphenol1,1,1-Trichloroethane 1,3-Dichlorobenzene 4,6-Dinitro-2-methylphenol1,1,2-Trichloroethane 1,4-Dichlorobenzene 2,4-DinitrophenolTrichloroethylene 3,3-Dichlorobenzidine 2-NitrophenolVinyl chloride Diethyl phthalate 4-NitrophenolDimethyl phthalate Phenol1,2-Diphenylhydrazine Pentachlorophenol2,4-Dinitrotoluene 2,4,6-Trichlorophenol2,6-DinitrotolueneIND1 Analyte ListIndicator Parameters Field ParametersTOC Temperature Dissolved oxygenTOX Specific conductivity EhpHNOTE (1): Acid extractable semi-volatile organics sampling only required in well K13-M02B10/20/2010Page 2 of 2Table 1-1 -Basins.xlsTable 1-2Corrective Action Monitoring at the Secure C LandfillQuality Assurance Project Plan With Sampling And Analysis PlanDuPont Chambers WorksDeepwater, New JerseySampling parameters:Frequency (IND1 & CLF-CA)Monitoring P21-M01B SAProgram for P21-M04B SACorrective P21-R01B SAAction at the Q20-M02B SASecure C Q21-M01B SALandfillS24-M01B*SA(5 plus 2 background wells)T22-M01B*SA*Background wells for Corrective Action and Detection Monitoring Programs at the Secure C LandfillSA=SemiannuallyIND1 Analyte ListIndicator Parameters Field ParametersTOC Temperature Dissolved oxygenTOX Specific conductivity EhpHCLF-CA Analyte ListIndicator ParametersVolatiles Semivolatiles InorganicspH (field parameter) benzene 1,2-dichlorobenzene aluminum (total)Eh (field parameter) chlorobenzene 1,2,4-trichlorobenzene ammoniaSpecific Conduct (field) chloroform 1,4-dichlorobenzene arsenic (total)Temp (field parameter) methylene chloride 4-chloroaniline chlorideTOC toluene aniline cyanide (total)TOX trichloroethylene n-nitrosodimethylamine lead (total)Total Phenolics naphthalene nitrate as nitrogenDO (field) o-toluidine sodiumsulfate10/20/2010Page 1 of 1Table 1-2 -CA.xlsTable 1-3 PFOA Monitoring Program Quality Assurance Project Plan With Sampling And Analysis Plan DuPont Chambers Works Deepwater, New Jersey

Sampling Parameters Well ID Area Section Aquifer Frequency Analytical Rationale for Sampling

F08-M01A Interior A SA PFCs South of Zonyl Intermediates G09-M01A Interior A SA PFCs Zonyl Intermediates
K12-M01A Interior A SA PFCs Perfluoroelastomers/fluoroelastomers area
C08-M01B CWW B SA PFCs Jackson Labs area
C11-M03B CWW B SA PFCs Former Antiknocks area
D06-M01B CWW B SA PFCs Jackson Labs area
PFOA D15-M01B CWW B SA PFCs Fluoroproducts area Monitoring F07-M01B Interior B SA PFCs Spatial distribution Program F08-M01B Interior B SA PFCs South of Zonyl Intermediates (36 wells) G05-M02B CWS B SA PFCs Salem Canal Seep area J10-M01B Interior B SA PFCs Spatial distribution K13-M02B Interior B SA PFCs South of A, B, and C Basins L09-M01B Interior B SA PFCs Western edge of SWMU 8
N08-M01B Interior B SA PFCs South of SWMU 8 P06-M01B CWE B SA PFCs Eastern perimeter well
P21-M01B Interior B SA PFCs Area 1 of C-Landfill R09-M02B Interior B SA PFCs Eastern edge of SWMU 8 AA25-M01B(C) CPE C SA PFCs Eastern perimeter well

C11-M01C CWW C SA PFCs Former Antiknocks area G04-M01B(C) CWS C SA PFCs Southern perimeter well

L09-M01C Interior C SA PFCs Western edge of SWMU 8
N08-M01C Interior C SA PFCs South of SWMU 8 P06-M02C CWE C SA PFCs Eastern perimeter well R10-M01C Interior C SA PFCs Eastern edge of SWMU 8 Z28-M01B(C) CPE C SA PFCs Eastern perimeter well AA22-M01B(D) CPE D SA PFCs Eastern perimeter well AA25-M01C(D) CPE D SA PFCs Eastern perimeter well

C11-M02D CWW D SA PFCs Former Antiknocks area J05-M01C(D) CWS D SA PFCs White Products area

L09-M01D Interior D SA PFCs Western edge of SWMU 8
N08-M01D Interior D SA PFCs South of SWMU 8 P06-M01D CWE D SA PFCs Eastern perimeter well
C11-M01E CWW E SA PFCs Former Antiknocks area G04-M01E CWS E SA PFCs Southern perimeter well P06-M01E CWE E SA PFCs Eastern perimeter well R10-M01E Interior E SA PFCs Eastern edge of SWMU 8

PFCs = Perfluorinated compounds FREQUENCY SA = Semi-Annually (two times per year) Perfluorobutanoate (PFBA) Perfluoropentanoate (PFPeA) AREA SECTIONS Perfluorohexanoate (PFHxA) CWW = Chambers Works Western Perimeter along Delaware River Perfluoroheptanoate (PFHpA) CWS = Chambers Works Southern Perimeter along Salem Canal Perfluorooctanoate (PFOA) CWE = Chambers Works Eastern Perimeter along Route 130 Perfluorononanoate (PFNA) CPW = Carneys Point Western Perimeter along Delaware River Perfluorodecanoate (PFDA) CPE = Carneys Point Eastern Perimeter along Route 130 Perfluoroundecanoate (PFUnA) Interior = Interior of complex Perfluorododecanoate (PFDoA)

Perfluorobutanesulfonate (PFBS) Perfluorohexanesulfonate (PFHxS) Perfluorooctanesulfonate (PFOS) Perfluorooctane sulfonamide (PFOSA)

10/20/2010 Page 1 of 1 Table 1-3 -PFOA.xls]Table 1-4Secure C Landfill Detection Monitoring ProgramQuality Assurance Project Plan With Sampling And Analysis PlanDuPont Chambers WorksDeepwater, New JerseySampling parameters:CLF-DM Sampling Parameters Sampling Port No. LCSDetection Monitoring for Areas 2, 3, 4, 5, and 7 *T22-M01BSALeachate Collection274BiEof the Secure C LandfillR19-M01B SASystem Monitoring276BiE(4 wells plus 2 background wells)R19-M02B SAProgram at theSump 5ABiES19-M01B SASecure C LandfillSump 5BBiES19-M02B SA(5 Sampling Ports)*S24-M01BSAFrequencySA = semiannuallyBiE = biennially (every two years) - Next sampling for LCS will be in January 2011Analyte Lists (Attached)LCS = Leachate collection system, analyte listCLF-DM = Secure C Landfill-Detection Monitoring target analytesNotes* Background wells for Corrective Action and Detection Monitoring Programs at the Secure C LandfillSump 7BiE10/20/2010Page 1 of 2 Table 1-4 -CLF.xlsTable 1-4Secure C Landfill Detection Monitoring ProgramQuality Assurance Project Plan With Sampling And Analysis PlanDuPont Chambers WorksDeepwater, New JerseyLeachate Collection System Analyte ListPriority PollutantPriority Pollutant AdditionalVolatile Organics Priority Pollutant Semivolatile Organics Metals ParametersBenzene Acenaphthylene Dimethyl phthalate Antimony, total AnilineBromodichloromethane Acenaphthene 1,2-Diphenylhydrazine Arsenic, total 4-ChloroanilineBromoform Anthracene 4,6-Dinitro-2-methylphenol Beryllium, total o-ToluidineBromomethane Benzidine 2,4-Dinitrophenol Cadmium, total TrichlorofluoromethaneCarbon tetrachloride Benzo(a) anthracene 2,4-Dinitrotoluene Chromium, total XyleneChlorobenzene Benzo(b) fluoranthene 2,6-Dinitrotoluene Copper, total PhenolsChloroethene Benzo(k) fluoranthene Di-n-octyl phthalate Cyanide, total PotassiumChloroform Benzo(ghi) perylene Fluoranthene Lead, total CalciumChloromethane Benzo(a) pyrene Fluorene Mercury, total MagnesiumDibromochloromethane bis(2-Chloroethoxy) methane Hexachlorobenzene Nickel, total Sulfate1,1-Dichloroethane bis(2-Chloroethyl) ether Hexachlorobutadiene Selenium, total Sulfide1,2-Dichloroethane bis(2-Chloroisopropyl) ether Hexachlorocyclopentadiene Silver, total pH (field)1,1-Dichloroethene bis(2-Ethylhexyl) phthalate Hexachloroethane Thallium, total Temp (field)trans-1,2-Dichloroethene 4-Bromophenyl phenyl ether Indeno(1,2,3-c,d)pyrene Zinc, total Specific conductance (field)1,2-Dichloropropane Butyl benzyl phthalate Isophorone Ammoniacis-1,3-Dichloropropene 4-chloro-3-methylphenol Naphthalene Chloridetrans-1,3-Dichloropropene 2-Chloronaphthalene Nitrobenzene Nitrate as nitrogenEthylbenzene 2-Chlorophenol 2-Nitrophenol SodiumMethylene chloride 4-Chlorophenyl phenyl ether 4-Nitrophenol1,1,2,2-Tetrachloroethane Chrysene NitrosodimethylamineTetrachloroethene Di-n-butylphthalate N-Nitroso-diphenyl amineToluene Dibenzo (a,h) anthracene N-Nitroso-di-n-propylamine1,1,1-Trichloroethane 1,2-Dichlorobenzene Pentachlorophenol1,1,2-Trichloroethane 1,3-Dichlorobenzene PhenanthreneTrichloroethylene 1,4-Dichlorobenzene PhenolVinyl chloride 3,3-Dichlorobenzidine Pyrene2,4-Dichlorophenol 1,2,4-TrichlorobenzeneDiethyl phthalate 2,4,6-Trichlorophenol2,4-DimethylphenolCLF-DM Analyte ListIndicator Parameters VolatilesInorganicspH (field parameter) benzene 1,2-dichlorobenzene ethylbenzene aluminum (total)Eh (field parameter) chlorobenzene 1,2,4-trichlorobenzene xylenes (totals) ammoniaSpecific Conduct (field) chloroform 1,4-dichlorobenzenearsenic (total)Temp (field parameter) methylene chloride 4-chloroaniline chlorideTOC toluene aniline cyanide (total)TOX trichloroethylene n-nitrosodimethylamine lead (total)Total Phenolics naphthalene nitrate as nitrogenDO (field) o-toluidine sodium1,2-dichloropropane sulfateSemivolatiles10/20/2010Page 2 of 2Table 1-4 -CLF.xlsTable 1-5 Perimeter Monitoring Program Quality Assurance Project Plan With Sampling And Analysis Plan DuPont Chambers Works

Deepwater, New Jersey

Sampling event: Jan 2009 Jul 2009 Jan 2010 Jul 2010 Jan 2011 Jul 2011 Jan 2012 Jul 2012 Sampling parameters: IND1 PMP IND1 PMP IND1 PMP IND1 PMP IND1 PMP IND1 PMP IND1 PMP IND1 PMP
PMP Well ID

(38 Wells) Perimeter Section Aquifer

C07-M01B CWW B -- -- A B -- -- A -- -- -- A B -- -- A -- C08-M01B* CWW B -- -- A B -- -- A -- -- -- A B -- -- A -- C09-M01B* CWW B -- -- A B -- -- A -- -- -- A B -- -- A -- C10-M01B CWW B -- -- A B -- -- A -- -- -- A B -- -- A -- C11-M03B CWW B -- -- A B -- -- A -- -- -- A B -- -- A -- D14-M01B CWW B -- -- A B -- -- A -- -- -- A B -- -- A -- D15-M01B CWW B -- -- A B -- -- A -- -- -- A B -- -- A -- E15-M01B CWW B -- -- A B -- -- A -- -- -- A B -- -- A -- E16-M01B CWW B -- -- A B -- -- A -- -- -- A B -- -- A -- F16-M01B CWW B -- -- A B -- -- A -- -- -- A B -- -- A -- G16-M03B CWW B -- -- A B -- -- A -- -- -- A B -- -- A -- K18-P01B CWW B -- -- A B -- -- A -- -- -- A B -- -- A -- D06-M01B CWS B -- -- A B -- -- A -- -- -- A B -- -- A -- F06-M02B CWS B -- -- A B -- -- A -- -- -- A B -- -- A -- G05-M02B CWS B -- -- A B -- -- A -- -- -- A B -- -- A -- J05-M02B CWS B -- -- A B -- -- A -- -- -- A B -- -- A -- L04-M01B CWS B -- -- A B -- -- A -- -- -- A B -- -- A -- N04-M01B CWE B -- -- A B -- -- A -- -- -- A B -- -- A -- P06-M01B CWE B -- -- A B -- -- A -- -- -- A B -- -- A -- R09-M01B CWE B -- -- A B -- -- A -- -- -- A B -- -- A -- U08-M01B CWE B -- -- A B -- -- A -- -- -- A B -- -- A -- U12-M01A(B) CWE B -- -- A B -- -- A -- -- -- A B -- -- A --

O26-M01B CPW B -- -- A B -- -- A -- -- -- A B -- -- A -- R31-M01B CPW B -- -- A B -- -- A -- -- -- A B -- -- A -- S32-M01B CPW B -- -- A B -- -- A -- -- -- A B -- -- A -- C11-M01C CWW C -- -- A B -- -- A -- -- -- A B -- -- A -- H17-M01B(C) CWW C -- -- A B -- -- A -- -- -- A B -- -- A -- J05-M01B(C) CWS C -- -- A B -- -- A -- -- -- A B -- -- A --

N04-M01C CWE C -- -- A B -- -- A -- -- -- A B -- -- A -- P06-M02C CWE C -- -- A B -- -- A -- -- -- A B -- -- A -- R09-M02C CWE C -- -- A B -- -- A -- -- -- A B -- -- A -- U12-M01B(C) CWE C -- -- A B -- -- A -- -- -- A B -- -- A --

C11-M02D CWW D -- -- A B -- -- A -- -- -- A B -- -- A -- H17-M01C(D) CWW D -- -- A B -- -- A -- -- -- A B -- -- A -- J05-M01C(D) CWS D -- -- A B -- -- A -- -- -- A B -- -- A --

N04-M01D CWE D -- -- A B -- -- A -- -- -- A B -- -- A -- P06-M01D CWE D -- -- A B -- -- A -- -- -- A B -- -- A -- R09-R01D CWE D -- -- A B -- -- A -- -- -- A B -- -- A --

SAMPLING FREQUENCY PERIMETER SECTIONS S = SEMI-ANNUALLY (TWO TIMES PER YEAR) CWW = Chambers Works Western Perimeter along Delaware River A = ANNUALLY (ONE TIME PER YEAR) CWS = Chambers Works Southern Perimeter along Salem Canal B = BIENNIALLY (ONE TIME EVERY TWO YEARS) CWE = Chambers Works Eastern Perimeter along Route 130 -- not required CPW = Carneys Point Western Perimeter along Delaware River

* C08-M01B and C09-M01B are also sampled as part of the Post Closure monitoring for RCRA units

Analyte Lists (attached) IND1 = indicator parameters PMP =Perimeter Monitoring Program Analyte List

10/20/2010 Page 1 of 2 Table 1-5 -PMP.xlsTable 1-5Perimeter Monitoring Program AnalytesQuality Assurance Project Plan With Sampling And Analysis PlanDuPont Chambers WorksDeepwater, New JerseyChambers Works Perimeter Monitoring Program Analyte ListPriority Pollutant Volatile Organics Priority Pollutant Semivolatile Organics Additional Parameters (2)BenzeneBase Neutral ExtractableDi-n-octyl phthalateAnilineBromodichloromethaneAcenaphthyleneFluoranthene4-ChloroanilineBromoformAcenaphtheneFluorene1-NaphthylamineBromomethaneAnthraceneHexachlorobenzene2-NaphthylamineCarbon tetrachlorideBenzidineHexachlorobutadieneo-ToluidineChlorobenzeneBenzo(a) anthraceneHexachlorocyclopentadieneTrichlorofluoromethaneChloroethaneBenzo(b) fluorantheneHexachloroethaneXyleneChloroformBenzo(k) fluorantheneIndeno(1,2,3-c,d)pyreneDissolved leadChloromethaneBenzo(ghi) peryleneIsophoroneOrganic LeadDibromochloromethaneBenzo(a) pyreneNaphthalenePriority Pollutant Total Metals:1,1-Dichloroethanebis(2-Chloroethoxy) methane NitrobenzeneAluminum (3)1,2-Dichloroethanebis(2-Chloroethyl) etherNitrosodimethylamineAntimony (3)1,1-Dichloroethenebis(2-Chloroisopropyl) etherN-Nitroso-diphenyl amineArsenic(3)trans-1,2-Dichloroethenebis(2-Ethylhexyl) phthalateN-Nitroso-di-n-propylamineBeryllium(3)1,2-Dichloropropane4-Bromophenyl phenyl etherPhenanthreneCadmium(3)cis-1,3-DichloropropeneButyl benzyl phthalatePyreneChromium (3)trans-1,3-Dichloropropene2-Chloronaphthalene1,2,4-TrichlorobenzeneIron(3)Ethylbenzene4-Chlorophenyl phenyl etherAcid Extractable(1)Lead(3)Methylene chlorideChrysene4-chloro-3-methylphenolNickel(3)1,1,2,2-TetrachloroethaneDi-n-butylphthalate2-ChlorophenolSodium(3)TetrachloroetheneDibenzo (a,h) anthracene2,4-DichlorophenolCyanide (4)Toluene1,2-Dichlorobenzene2,4-DimethylphenolMercury (4)1,1,1-Trichloroethane1,3-Dichlorobenzene4,6-Dinitro-2-methylphenolSelenium (4)1,1,2-Trichloroethane1,4-Dichlorobenzene2,4-DinitrophenolSilver (4)Trichloroethylene3,3-Dichlorobenzidine2-NitrophenolThallium (4)Vinyl chlorideDiethyl phthalate4-NitrophenolZinc (4)Dimethyl phthalatePhenol1,2-DiphenylhydrazinePentachlorophenol2,4-Dinitrotoluene2,4,6-Trichlorophenol2,6-DinitrotolueneIND1 Analyte ListIndicator ParametersField ParametersTOCTemperatureDissolved oxygenTOXSpecific conductivityEhpH(1) Acid extractable semivolatile organics sampling required for B Aquifer CWS only.(2) Additional parameters for B aquifer CWW and CWS only(3) Total metals for B aquifer CWW, CWS, and CPW(4) Total metals for B aquifer CPW only10/27/2010Page 2 of 2Table 1-5 -PMP.xlsTable 1-6Post-Closure Monitoring for RCRA UnitsQuality Assurance Project Plan With Sampling And Analysis PlanDuPont Chambers WorksDeepwater, New JerseyFrequency RCRA UnitAnaltyicalPost ClosureC08-M01B* A SMWU 28Iodide and fluorideMonitoring forC09-M01B* A SMWU 25LeadRCRA UnitsG14-M01B A SWMU 26Antimony and PCB congeners(4 Wells)L12-M01B A SWMU 21 Lead, ethylene dichloride, and ethylene dibromideFrequencyA = AnnuallyNotes* C08-M01B and C09-M01B are also sampled as part of the PMPSampling parameters:10/20/2010Page 1 of 1 Table 1-6 -RCRA.xls10/20/10 Page 1 of 1 Table 2-BottleFillingOrder.doc Table 2 Analytical Parameter Bottle Filling Order Quality Assurance Project Plan With Sampling And Analysis Plan DuPont Chambers Works

Deepwater, New Jersey

Analytical Parameter Filling Priority Volatile Organics (VOA) 1 Purgeable Organic Carbons (POC) 2 Purgeable Organic Halogens (POX) 3 Total Organic Halogens (TOX) 4 Total Organic Carbon (TOC) 5 Perfluorochemicals (PFCs) 6
Base Neutrals/Acid Extractables 7
TPHC/Oil & Grease 8
PCBs/Pesticides 9
Total Metals 10
Dissolved Metals 11
Phenols 12 Cyanide 13
Sulfate and Chloride 14 Turbidity 15
Nitrate and Ammonia 16 Preserved Inorganics 17
Radionuclides 18 Non-Preserved Inorganics 19
Bacteria 20Table 3Summary of Containers, Holding Times, and PreservationQuality Assurance Project Plan With Sampling And Analysis PlanDuPont Chambers WorksDeepwater, New JerseyTestTest Method* ContainerHolding TimePreservation**PPL or specifiedSW-846G14 daysCool 4°C(2)Volatile Organic Compounds Method 8260BHCl to pH<2PPL or specifiedSW-846G 7 days to extraction,Cool 4°C(2)Semivolatile Organic Compounds Method 8270C40 days to analysisPolychlorinated Biphenyl EPA G 1 yearCool 4°C(2)congenersMethod 1668APerfluorochemicals (PFCs)Laboratory SOP HDPE 14 days (advisory only)Cool 4°C(2)PPL or specified Metals SW-846 P, G 6 monthsCool 4°C(2)(except Hg)Method 6010BHNO3to pH<2and 60201Mercury (Hg)SW-846P, G28 daysCool 4°C(2)Method 7470AHNO3to pH<2Total Organic Halogen (TOX)SW-846G28 daysCool 4°C(2)Method 9020BH2SO4to pH<2Total Organic Carbon (TOC)SW-846G28 daysCool 4°C(2)Method 9060H3PO4to pH<2Total PhenolicsSW-846G28 daysCool 4°C(2)Method 9066H2SO4to pH<2Total CyanideSW-846G14 daysCool 4°C(2)Method 9012ANaOH to pH >12ChlorideSMP, G28 daysCool 4°C(2)Method 4500 Cl CFluoride EPA P, G 28 daysCool 4°C(2)Method 300.0Iodide Std Mthd, 18th Ed., P, G 28 daysCool 4°C(2)4500-IBNitrate EPA P, G 48 hoursCool 4°C(2)Method 353.2Ammonia SM P, G 28 daysCool 4°C(2)Method4500NH3H2SO4to pH<2SulfateEPAP, G28 daysCool 4°C(2)Method 300.0Sulfide SM P, G 28 daysCool 4°C(2)Method4500S2zinc acetate, NaOH to pH >9OrganoleadCaliforniaG 7 days to extraction,Cool 4°C(2)HML-939 M40 days to analysis*See Tables 1-1 through 1-6 for specified target compounds.HDPE = High Density Polyethylene**All samples are to be stored at approximately 4oC (not frozen to 6oC).P = Polyethylene1As, Pb, Se, Tl by ICP-MS method 6020.G = Glass2Nominal; actual not frozen to 6°C.SOP = standard operating procedure.10/20/2010Page 1 of 1Tables 3_4_5_gw monQAPP2010_CAC65.xlsTable 3Table 4 Analytical Methodology Quality Assurance Project Plan With Sampling And Analysis Plan DuPont Chambers Works

Deepwater, New Jersey

Preparation Analytical Parameter Method* Method* PPL or specified Volatile Organics 5030B 8260B Semivolatile Organics 3510C 8270C Polychlorinated Biphenyl congeners 1668A Perflourochemicals (PFCs) Lab SOP Lab SOP Metals 3010A 6010B Except: Mercury 7470A Thallium 3010A 6020 Arsenic 3010A 6020 Selenium 3010A 6020 Lead 3010A 6020 Other Total Organic Halogen (TOX) 9020B Total Organic Carbon (TOC) 9060 Total Phenolics 9065 9066 Total Cyanide 9012A Chloride 4500 Cl C*** Fluoride 300.0** Iodide 4500-IB*** Nitrate 353.2** Ammonia 4500 NH 3 **
Sulfate 300.0** Sulfide 4500 S 2 *** Organolead California HML 939-M

*Methods are from Test Methods for Evaluating Solid Waste, Physical and

Chemical Methods (EPA document SW-846), Third Edition, most recent version, unless noted otherwise;
**Methods are from Methods for Chemical Analysis of Water and Wastes , EPA 600/4-79-020, March 1983
***Methods are from Standard Methods for the Examination of Water and Wastewater , 21st Edition, 2005 SOP = standard operating procedure

10/19/2010 Page 1 of 1 Tables 3_4_5_gw monQAPP2010_CAC65.xlsTable 4Table 5 Precision, Accuracy, and Completeness Objectives Quality Assurance Project Plan With Sampling And Analysis Plan DuPont Chambers Works

Deepwater, New Jersey

Precision Accurac y (Relative % (Relative Difference) Recovery) Completeness Test* Test Method for Water for Water for Water PPL or specified SW-846 20 70-130 90 Volatile Organic Compounds Method 8260B PPL or specified SW-846 20 60-140 90 Semivolatile Organic Compounds Method 8270C Polychlorinated Biphenyl congeners EPA Method 1668A 20 50-150 90 PPL or specified SW-846 20 70-130 90 Metals (ICP) Method 6010B PPL or specified SW-846 20 50-150 90 Metals (ICP-MS)** Method 6020/7470A Perfluorochemicals (PFCs) Laboratory SOPs 20 70-130 90

Total Organic Halogen (TOX) SW-846 20 75 - 125 90 Method 9020B Total Organic Carbon (TOC) SW-846 20 75 - 125 90 Method 9060 Total Phenolics SW-846 20 75 - 125 90 Method 9066 Total Cyanide SW-846 20 75 - 125 90 Method 9012A Chloride SM Method 4500 Cl C 20 75 - 125 90 Fluoride EPA Method 300.0 20 75 - 125 90 Iodide Standard Methods, 20 75 - 125 90 18th edition, 4500-IB Nitrate EPA Method 353.2 20 75 - 125 90 Ammonia SM Method 4500 NH 3 20 75 - 125 90 Sulfate EPA Method 300.0 20 75 - 125 90 Sulfide SM Method 4500 S 2 20 75 - 125 90 Organolead California HML 939-M 20 50-150 90

*See Tables 1-1 through 1-6 for specified target compounds. **As, Pb, Se, Tl by 6020 and Hg by cold vapor (7470A) SOPs = standard operating procedures

10/20/2010 Page 1 of 1 Tables 3_4_5_gw monQAPP2010_CAC65.xlsTable 5

## FiguresFigure 1 Project Organization Diagram Quality Assurance Project Plan With Sampling And Analysis Plan DuPont Chambers Works

Deepwater, New Jersey

Line of authority

Line of communication Ed Lutz CRG Project Director EPA, NJDEP Michael Aucoin URS QA Officer

Chris Ward URS Project Manager Michael Aucoin Candia Carle URS Project Chemists

(Contractor) Laboratory Project Manager

URS Field Technical Staff (Laboratory) QA Manager

Laboratory Staff (Laboratory) Sample Custodian (Laboratory) Operating Manager Unitas Todd URS Field Coordination

## Appendices

## Appendix A

Water-Level Data Collection and Data Transfer QA/QC ProcedureQuality Assurance Project Plan/ Sampling and Analysis Plan Appendix A

Appendix A_7141 GW QAPP.doc A-1 Newark, DE 

### QA/QA Procedure Chambers Works Water-Level Data Collection and Data Transfer

Water-Level Data Collection QA/QC Procedure

Chambers Works water-level data are collected semi-annually (approximately 325 monitoring wells). Because of the large amount of data collected, it is necessary to install a quality assurance and quality control ( QA/QC) step during water-level collection process. Field personnel (divided into three two-person teams and a fourth team of one person) are required to obtain and record tw o water-level measurements. Duplicate waterlevel measurements are made by lowering the water-level indicator into the well and recording a water level. After the initial water-level measurement is made, the device is reeled up a minimum of 3 feet from the wa ter-level surface and then lowered again to obtain a second water-level re ading. These water-level meas urements are recorded, and any discrepancies are investigated and resolv ed. This procedure is designed to ensure accurate water-level measurements.

Water-Level Data Transfer QA/QC Procedure

The water-level information is then transf erred to a spreadshee t after collection. The spreadsheet is reviewed by each field crew leader. Information requiring correction is identified, and the spreadsheet is correcte d. After these corrections are completed, the project manager (or designate) reviews the water-level data for accuracy. If further corrections are required, they are made, and the spreadsheet is reviewed until it becomes accurate. After the spreadsheet is considered accurate, the water-level data become part of the Chambers Works file system.

Well Inspections
Each monitoring well is inspected duri ng the semi-annual water-level measurement event. The condition of each well is noted on the spreadsheet. The project manager (or designate) responsible for the well inspections reviews each spreadsheet. Corrections that can be made immediately are done so (e.g., l ube lock, replace a missing inner cap, etc.). Well repairs requiring a contract or are noted and scheduled fo r completion. This includes items such as wells damaged by a vehicle or broken well caps.

Timing

One week after water-level data collecti on, DuPont Corporate Remediation Group (CRG) personnel will transfer water-level data from the field sheets to a final spreadsheet and review the well inspection notes.

## Appendix B

Blank Instrument Calibration and Field Logbook FormsInstrument CalibrationpH Meter ConductivityRedoxPhotoionizationDetectorDate Time PersonnelBuffers Slope Standard ActualDissolved OxygenCalibration SlopeStandard Actual Standard Actual

## Corporate Remediation Group - Field Book

Site: Event: Date: Time: Personnel: Project Manager: Well ID: Permit No: VO Vapors : PiDlFID BZ:. PIDIFID CA:. Weather Conditions: Clear Cloudy Other Wind: Temp:  F

Well Depth: LNAPL: Purge Method: Depth to Water: DNAPL: Purge Start: Water Column: Casing Dia: Purge Stop: Well Vol: Conv. Factor: Parameter Collection Time: Well Vol (3x): Purge Rate: Water Level Stable @:

Parameters Sample Analysis Time pH Temperature (  C) Specific Conductance (umho) Dissolved Oxygen (mg/l) Redox (mV) Turbidity (ntu)
Color
Odor

Sample Date: Sample Collection Time: Sample Method:

Analysis Volume (ml) # Pres ervative Zero HS Comments:

Analyst Name: _____________________________________ Analyst Signature: Date: 

## 00000