URS Corporation 

Iron Hill Corporate Center 

4051 Ogletown Road, Suite 300 

Newark, DE 19713 

Quarterly MOU Status Report #17 

Phase II Monitoring/Sampling Work Plan 

DuPont Washington Works 

(OPPT-2004-0113 PFOA Site-Related 

Environmental Assessment Program) 

Date: February 3, 2010 Project No.: 18984356.05013 
Quarterly MOU Status Report #17 Phase II Monitoring/Sampling 

Work Plan Table of Contents

17QMOU 020310 i

Newark, DE February 3, 2010 

OPPT-2004-0113 PFOA Site-Related Environmental Assessment Program

Table of Contents 

1.0 Quarterly MOU Status Report #17 .............................................................................1 

2.0 Updated Data Tables and Figures...............................................................................3 
Quarterly MOU Status Report #17 Phase II Monitoring/Sampling 

Work Plan Quarterly MOU Status Report #17

17QMOU 020310 1

Wilmington, DE February 3, 2010 

OPPT-2004-0113 PFOA Site-Related Environmental Assessment Program

1.0 Quarterly MOU Status Report #17 

On November 3, 2005, a Memorandum of Understanding (MOU) was entered into 

between the United States Environmental Protection Agency (EPA) and E. I. du Pont de 

Nemours and Company (DuPont) for a Perfluorooctanoic Acid (PFOA) Site-Related 

Environmental Assessment Program. This MOU memorializes the DuPont commitment 

to engage in a screening level PFOA Site-Related Environmental Assessment Program 

that will provide EPA with additional media-specific monitoring of PFOA on and around 

the DuPont Washington Works Site in West Virginia. There are three DuPont owned and 

operated landfills that are included in this Program, the Local Landfill, the Dry Run 

Landfill and the Letart Landfill. This Program aims to gather data and other information 

to address in part the Charge [as set forth in the MOU (Section V.A.1-3)]. 

One of the reporting requirements of the MOU is the submission of quarterly status 

reports. Section V.B.3 of the MOU describes the status report requirements. 

Specifically, the Company will provide the EPA with a status report on a quarterly basis. 

The first such status report is due three months after the effective date of the MOU 

(November 3, 2005). Each status report shall contain a brief description of the 

implementation status of the Phase II Monitoring/Sampling Work Plan (Work Plan) and 

shall include a copy of all analytical reports, survey reports, and other reports that have 

been completed and received by the Company, pursuant to the Work Plan, 30 days prior 

to the deadline for that status report. 

This report is the 17th quarterly MOU status report. The format of this report, and all 

future quarterly MOU status reports (starting with the 12th quarterly MOU status report), 

has been modified compared to previous reports because all MOU related activities have 

been completed and the Assessments have been submitted to EPA. The data reported in 

this and future quarterly MOU status reports are not part of the Phase II MOU monitoring 

activities. Reporting of this data is not required by the MOU, but is provided here by 

DuPont for completeness of study. 

This report consists primarily of updated data tables. Table numbers for the tables 

included are the same as in the Quarterly MOU Status Report #11 (dated August 1, 2008) 

and most figures related to these tables can be found in the Work Plan or in the Quarterly 

MOU Status Report #11. Tables are no longer included in the quarterly monitoring 

reports when no further updating is required. In addition, new tables are added as new 

programs become active or the status of residential treatment changes. For example, 

Table 4.8A was included in the previous MOU status report as a new table which 

provides information on the status of Order On Consent Phase I residents qualified for 

treatment that are now receiving alternative treatment. Starting with this report, the 

Quarterly MOU Status Report #17, all tables will be double-sided due the large number 

of pages for several of the tables. 

Figures are only included in the quarterly MOU status reports when they require 

updating. Included in this quarterly MOU status report, are Figures 4.1 and 4.2, which 

have been updated to provide the locations of all residential GAC treatment systems in 

Ohio and West Virginia included in Tables 4.2 through 4.5, 4.8 and 4.10. 
Quarterly MOU Status Report #17 Phase II Monitoring/Sampling 

Work Plan Quarterly MOU Status Report #17

17QMOU 020310 2

Wilmington, DE February 3, 2010 

OPPT-2004-0113 PFOA Site-Related Environmental Assessment Program

Note that in Table 4.1, the information in the comments column for the Little Hocking 

Water Association C-STALL-LHWA and BWASH-LHWA samples has been modified 

to more accurately reflect the sample description for these samples collected after 

October 2007. For samples collected after October 2007, the samples are now referred to 

as NPDES Discharge Monitoring samples. In addition, the Lubeck PSD GAC results for 

the September 2009 monthly sampling results have been corrected. MPI Research, the 

laboratory that analyzes the samples, determined that the PT and BED2S-Lead samples 

for September 2009 were mislabeled in the laboratory and results had been provided with 

incorrect sample names. The correct names are now provided with the correct results. 

Quarterly MOU Status Report #17 Phase II Monitoring/Sampling 

Work Plan Updated Data Tables and Figures

17QMOU 020310 4

Wilmington, DE February 3, 2010 

OPPT-2004-0113 PFOA Site-Related Environmental Assessment Program

• Table 5.12 Dry Run Landfill APFO and PFOA in Groundwater 

• Figure 4.1 Locations of Residential GAC Systems – Ohio 

• Figure 4.2 Locations of Residential GAC Systems – West Virginia and Ohio 

Note: Table 4.7 is no longer updated and is no longer included in the quarterly MOU 

monitoring reports. Please refer to the Quarterly MOU Monitoring Report # 

13, dated February 3, 2009, for the final update of this table. 
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Belpre, OH BelPSDPT 3/13/2006 0.222 0.213 Prior Carbon Treatment

BelPSD-AC-Bed1N 3/13/2006 ND (<0.0023) ND (<0.0023) Bed 1 North - Lead

BelPSD-AC-Bed2N 3/13/2006 ND (<0.0023) ND (<0.0023) Bed 2 North - Lag

BelPSD-AC-Bed1S 3/13/2006 ND (<0.0023) ND (<0.0023) Bed 1 South - Lead

BelPSD-AC-Bed2S 3/13/2006 ND (<0.0023) ND (<0.0023) Bed 2 South - Lag

BelPSDPT 4/24/2006 0.247 0.237 Prior Carbon Treatment

BelPSD-AC-Bed1N-Lead 4/24/2006 ND (<0.0012) ND (<0.0012) After Carbon Bed Sample

BelPSD-AC-Bed1N-LeadMS/REP

4/24/2006 ND (<0.0012) ND (<0.0012) After Carbon Bed Sample-field sample

BelPSD-AC-Bed2N-Lag 4/24/2006 ND (<0.0012) ND (<0.0012) After Carbon Bed Sample

BelPSD-AC-Bed1S-Lead 4/24/2006 ND (<0.0012) ND (<0.0012) After Carbon Bed Sample

BelPSD-AC-Bed2S-Lag 4/24/2006 ND (<0.0012) ND (<0.0012) After Carbon Bed Sample

BelPSDPT 5/9/2006 0.286 0.275 Prior Carbon Treatment

BelPSD-Bed1N-Lead 5/9/2006 ND (<0.0012) ND (<0.0012) After Carbon Bed Sample

BelPSD-Bed2N-Lag 5/9/2006 ND (<0.0012) ND (<0.0012) After Carbon Bed Sample

BelPSD-Bed1S-Lead 5/9/2006 ND (<0.0012) ND (<0.0012) After Carbon Bed Sample

BelPSD-Bed2S-Lag 5/9/2006 ND (<0.0012) ND (<0.0012) After Carbon Bed Sample

BelPSDPT 6/15/2006 0.193 0.185 Prior Carbon Treatment

BelPSD-Bed1N-Lead 6/15/2006 NQ (<0.006) NQ (<0.006) After Carbon Bed Sample

BelPSD-Bed1N-Lead 6/15/06 (dup) NQ (<0.006) NQ (<0.006) After Carbon Bed Sample

BelPSD-Bed2N-Lag 6/15/2006 ND (<0.0012) ND (<0.0012) After Carbon Bed Sample

BelPSD-Bed1S-Lead 6/15/2006 NQ (<0.006) NQ (<0.006) After Carbon Bed Sample

BelPSD-Bed2S-Lag 6/15/2006 ND (<0.0012) ND (<0.0012) After Carbon Bed Sample

BelPSDPT 7/27/2006 0.205 0.197 Prior Carbon Treatment

BelPSD-Bed1N-Lead 7/27/2006 0.0146 0.0140 After Carbon Bed Sample

BelPSD-Bed1N-Lead 7/27/2006 (dup) 0.0143 0.0137 After Carbon Bed Sample

BelPSD-Bed2N-Lag 7/27/2006 ND (<0.0026) ND (<0.0026) After Carbon Bed Sample

BelPSD-Bed1S-Lead 7/27/2006 0.0296 0.0284 After Carbon Bed Sample

BelPSD-Bed2S-Lag 7/27/2006 ND (<0.0026) ND (<0.0026) After Carbon Bed Sample

BelPSDPT 8/23/2006 0.230 0.220 Prior Carbon Treatment

BelPSD-Bed2N-Lead 8/23/2006 ND (<0.0026) ND (<0.0026) After Carbon Bed Sample

BelPSD-Bed1N-Lag 8/23/2006 NQ (<0.013) NQ(<0.013) After Carbon Bed Sample

BelPSD-Bed1N-Lag 8/23/06 (dup) ND (<0.013) ND (<0.013) After Carbon Bed Sample

BelPSD-Bed2S-Lead 8/23/2006 NQ (<0.013) NQ (<0.013) After Carbon Bed Sample

BelPSD-Bed1S-Lag 8/23/2006 ND (<0.0026) ND (<0.0026) After Carbon Bed Sample

BelPSDPT 9/19/2006 0.190 0.180 Prior Carbon Treatment

BelPSD-Bed2N-Lead 9/19/2006 NQ (<0.013) NQ (<0.013) After Carbon Bed Sample

BelPSD-Bed1N-Lag 9/19/2006 ND (<0.0026) ND (<0.0026) After Carbon Bed Sample

BelPSD-Bed1N-Lag 9/19/06 (dup) ND (<0.0026) ND (<0.0026) After Carbon Bed Sample

BelPSD-Bed2S-Lead 9/19/2006 NQ (<0.013) NQ (<0.013) After Carbon Bed Sample

BelPSD-Bed1S-Lag 9/19/2006 ND (<0.0026) ND (<0.0026) After Carbon Bed Sample

BelPSDPT 10/10/2006 0.240 0.230 Prior Carbon Treatment

BelPSD-Bed2N-Lead 10/10/2006 0.010 0.010 After Carbon Bed Sample

BelPSD-Bed1N-Lag 10/10/2006 ND (<0.0018) ND (<0.0018) After Carbon Bed Sample

BelPSD-Bed1N-Lag 10/10/06 (dup) ND (<0.0018) ND (<0.0018) After Carbon Bed Sample

BelPSD-Bed2S-Lead 10/10/2006 NQ (<0.0090) NQ (<0.0090) After Carbon Bed Sample

BelPSD-Bed1S-Lag 10/10/2006 ND (<0.0018) ND (<0.0018) After Carbon Bed Sample

BelPSDPT 11/7/2006 0.190 0.180 Prior Carbon Treatment

BelPSD-Bed2N-Lead 11/7/2006 0.019 0.018 After Carbon Bed Sample

BelPSD-Bed1N-Lag 11/7/2006 ND (<0.0018) ND (<0.0018) After Carbon Bed Sample

BelPSD-Bed1N-Lag 11/7/06 (dup) ND (<0.0018) ND (<0.0018) After Carbon Bed Sample

BelPSD-Bed2S-Lead 11/7/2006 0.015 0.014 After Carbon Bed Sample

BelPSD-Bed1S-Lag 11/7/2006 ND (<0.0018) ND (<0.0018) After Carbon Bed Sample

Active Sampling Locations

2/3/10 Page 1 of 41 Table 4.1
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Active Sampling Locations

Belpre, OH cont. BelPSDPT 12/14/2006 0.180 0.170 Prior Carbon Treatment

BelPSD-Bed1N-Lead 12/14/2006 ND (<0.0018) ND (<0.0018) After Carbon Bed Sample

BelPSD-Bed1N-Lead 12/14/06 (dup) ND (<0.0018) ND (<0.0018) After Carbon Bed Sample

BelPSD-Bed2N-Lag 12/14/2006 ND (<0.0018) ND (<0.0018) After Carbon Bed Sample

BelPSD-Bed1S-Lead 12/14/2006 ND (<0.0018) ND (<0.0018) After Carbon Bed Sample

BelPSD-Bed2S-Lag 12/14/2006 ND (<0.0018) ND (<0.0018) After Carbon Bed Sample

BelPSDPT 1/15/2007 0.230 0.220 Prior Carbon Treatment

BelPSD-Bed1N-Lead 1/15/2007 0.0082 0.0079 After Carbon Bed Sample

BelPSD-Bed1N-Lead 1/15/2007 (dup) 0.0072 0.0069 After Carbon Bed Sample

BelPSD-Bed2N-Lag 1/15/2007 NQ (<0.0051) NQ (<0.0051) After Carbon Bed Sample

BelPSD-Bed1S-Lead 1/15/2007 0.0062 0.0060 After Carbon Bed Sample

BelPSD-Bed2S-Lag 1/15/2007 NQ (<0.0051) NQ (<0.0051) After Carbon Bed Sample

BelPSDPT 2/15/2007 0.200 0.190 Prior Carbon Treatment

BelPSD-Bed1N-Lead 2/15/2007 0.027 0.026 After Carbon Bed Sample

BelPSD-Bed1N-Lead 2/15/07 (dup) 0.027 0.026 After Carbon Bed Sample

BelPSD-Bed2N-Lag 2/15/2007 ND (<0.0010) ND (<0.0010) After Carbon Bed Sample

BelPSD-Bed1S-Lead 2/15/2007 0.020 0.019 After Carbon Bed Sample

BelPSD-Bed2S-Lag 2/15/2007 ND (<0.0010) ND (<0.0010) After Carbon Bed Sample

BelPSDPT 3/27/2007 0.210 0.200 Prior Carbon Treatment

BelPSD-Bed1N-Lead 3/27/2007 0.050 0.048 After Carbon Bed Sample

BelPSD-Bed1N-Lead 3/27/07 (dup) 0.048 0.046 After Carbon Bed Sample

BelPSD-Bed2N-Lag 3/27/2007 ND (<0.0010) ND (<0.0010) After Carbon Bed Sample

BelPSD-Bed1S-Lead 3/27/2007 0.045 0.043 After Carbon Bed Sample

BelPSD-Bed2S-Lag 3/27/2007 ND (<0.0010) ND (<0.0010) After Carbon Bed Sample

BelPSDPT 4/19/2007 0.230 0.220 Prior Carbon Treatment

BelPSD-Bed1N-Lead 4/19/2007 0.055 0.053 After Carbon Bed Sample

BelPSD-Bed1N-Lead 4/19/2007 (dup) 0.061 0.059 After Carbon Bed Sample

BelPSD-Bed2N-Lag 4/19/2007 ND (<0.0027) ND (<0.0027) After Carbon Bed Sample

BelPSD-Bed1S-Lead 4/19/2007 0.059 0.057 After Carbon Bed Sample

BelPSD-Bed2S-Lag 4/19/2007 ND (<0.0027) ND (<0.0027) After Carbon Bed Sample

BelPSDPT 5/17/2007 0.220 0.210 Prior Carbon Treatment

BelPSD-Bed1N-Lead 5/17/2007 0.080 0.077 After Carbon Bed Sample

BelPSD-Bed1N-Lead 5/17/07 (dup) 0.079 0.076 After Carbon Bed Sample

BelPSD-Bed2N-Lag 5/17/2007 NQ (<0.013) NQ (<0.013) After Carbon Bed Sample

BelPSD-Bed1S-Lead 5/17/2007 0.081 0.078 After Carbon Bed Sample

BelPSD-Bed2S-Lag 5/17/2007 NQ (<0.013) NQ (<0.013) After Carbon Bed Sample

BelPSDPT 6/22/2007 0.200 0.190 Prior Carbon Treatment

BelPSD-Bed1N-Lag 6/22/2007 NQ (<0.0062) NQ (<0.0062) After Carbon Bed Sample

BelPSD-Bed1N-Lag 6/22/2007 (dup) NQ (<0.0062) NQ (<0.0062) After Carbon Bed Sample

BelPSD-Bed2N-Lead 6/22/2007 0.030 0.029 After Carbon Bed Sample

BelPSD-Bed1S-Lag 6/22/2007 NQ (<0.0062) NQ (<0.0062) After Carbon Bed Sample

BelPSD-Bed2S-Lead 6/22/2007 0.035 0.034 After Carbon Bed Sample

BelPSDPT 7/19/2007 0.190 0.180 Prior Carbon Treatment

BelPSD-Bed1N-Lag 7/19/2007 ND (<0.0012) ND (<0.0012) After Carbon Bed Sample

BelPSD-Bed1N-Lag 7/19/07 (dup) ND (<0.0012) ND (<0.0012) After Carbon Bed Sample

BelPSD-Bed2N-Lead 7/19/2007 0.054 0.052 After Carbon Bed Sample

BelPSD-Bed1S-Lag 7/19/2007 ND (<0.0012) ND (<0.0012) After Carbon Bed Sample

BelPSD-Bed2S-Lead 7/19/2007 0.051 0.049 After Carbon Bed Sample

BelPSDPT 8/14/2007 0.230 0.220 Prior Carbon Treatment

BelPSD-Bed1N-Lag 8/14/2007 ND (<0.0012) ND (<0.0012) After Carbon Bed Sample

BelPSD-Bed1N-Lag 8/14/2007 (dup) ND (<0.0012) ND (<0.0012) After Carbon Bed Sample

BelPSD-Bed2N-Lead 8/14/2007 0.075 0.072 After Carbon Bed Sample

BelPSD-Bed1S-Lag 8/14/2007 ND (<0.0012) ND (<0.0012) After Carbon Bed Sample

2/3/10 Page 2 of 41 Table 4.1
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Active Sampling Locations

Belpre, OH cont. BelPSD-Bed2S-Lead 8/14/2007 0.082 0.079 After Carbon Bed Sample

BelPSDPT 9/12/2007 0.260 0.250 Prior Carbon Treatment

BelPSD-Bed1N-Lag 9/12/2007 ND (<0.0012) ND (<0.0012) After Carbon Bed Sample

BelPSD-Bed1N-Lag 9/12/2007 (dup) ND (<0.0012) ND (<0.0012) After Carbon Bed Sample

BelPSD-Bed2N-Lead 9/12/2007 0.082 0.079 After Carbon Bed Sample

BelPSD-Bed1S-Lag 9/12/2007 ND (<0.0012) ND (<0.0012) After Carbon Bed Sample

BelPSD-Bed2S-Lead 9/12/2007 0.100 0.100 After Carbon Bed Sample

BelPSDPT 10/3/2007 0.230 0.220 Prior Carbon Treatment

BelPSD-Bed1N-Lag 10/3/2007 ND (<0.0031) ND (<0.0031) After Carbon Bed Sample

BelPSD-Bed1N-Lag 10/3/2007 (dup) 0.074 0.071 After Carbon Bed Sample

BelPSD-Bed2N-Lead 10/3/2007 0.076 0.073 After Carbon Bed Sample

BelPSD-Bed1S-Lag 10/3/2007 ND (<0.0031) ND (<0.0031) After Carbon Bed Sample

BelPSD-Bed2S-Lead 10/3/2007 0.100 0.097 After Carbon Bed Sample

BelPSDPT 11/13/2007 0.230 0.220 Prior Carbon Treatment

BelPSD-Bed1N-Lag 11/13/2007 NQ (<0.016) NQ (<0.016) After Carbon Bed Sample

BelPSD-Bed1N-Lag 11/13/07 (dup) NQ (<0.016) NQ (<0.016) After Carbon Bed Sample

BelPSD-Bed2N-Lead 11/13/2007 0.100 0.100 After Carbon Bed Sample

BelPSD-Bed1S-Lag 11/13/2007 NQ (<0.016) NQ (<0.016) After Carbon Bed Sample

BelPSD-Bed2S-Lead 11/13/2007 0.110 0.110 After Carbon Bed Sample

BelPSDPT 12/11/2007 0.230 0.220 Prior Carbon Treatment

BelPSD-Bed1N-Lead 12/11/2007 ND (<0.0031) ND (<0.0031) After Carbon Bed Sample

BelPSD-Bed1N-Lead 12/11/2007 (dup) ND (<0.0031) ND (<0.0031) After Carbon Bed Sample

BelPSD-Bed2N-Lag 12/11/2007 ND (<0.0031) ND (<0.0031) After Carbon Bed Sample

BelPSD-Bed1S-Lead 12/11/2007 NQ (<0.016) NQ (<0.016) After Carbon Bed Sample

BelPSD-Bed2S-Lag 12/11/2007 ND (<0.0031) ND (<0.0031) After Carbon Bed Sample

BelPSDPT 1/16/2008 0.230 0.220 Prior Carbon Treatment

BelPSD-Bed1N-Lead 1/16/2008 ND (<0.0022) ND (<0.0022) After Carbon Bed Sample

BelPSD-Bed1N-Lead 1/16/2008 (dup) ND (<0.0022) ND (<0.0022) After Carbon Bed Sample

BelPSD-Bed2N-Lag 1/16/2008 ND (<0.0022) ND (<0.0022) After Carbon Bed Sample

BelPSD-Bed1S-Lead 1/16/2008 0.037 0.036 After Carbon Bed Sample

BelPSD-Bed2S-Lag 1/16/2008 ND (<0.0022) ND (<0.0022) After Carbon Bed Sample

BelPSDPT 2/12/2008 0.240 0.230 Prior Carbon Treatment

BelPSD-Bed1N-Lead 2/12/2008 ND (<0.0022) ND (<0.0022) After Carbon Bed Sample

BelPSD-Bed1N-Lead 2/12/08 (dup) ND (<0.0022) ND (<0.0022) After Carbon Bed Sample

BelPSD-Bed2N-Lag 2/12/2008 NQ (<0.011) NQ (<0.011) After Carbon Bed Sample

BelPSD-Bed1S-Lead 2/12/2008 0.048 0.046 After Carbon Bed Sample

BelPSD-Bed2S-Lag 2/12/2008 ND (<0.0022) ND (<0.0022) After Carbon Bed Sample

BelPSDPT 3/12/2008 0.220 0.210 Prior Carbon Treatment

BelPSD-Bed1N-Lead 3/12/2008 ND (<0.0022) ND (<0.0022) After Carbon Bed Sample

BelPSD-Bed1N-Lead 3/12/08 (dup) ND (<0.0022) ND (<0.0022) After Carbon Bed Sample

BelPSD-Bed2N-Lag 3/12/2008 0.019 0.018 After Carbon Bed Sample

BelPSD-Bed1S-Lead 3/12/2008 0.062 0.059 After Carbon Bed Sample

BelPSD-Bed2S-Lag 3/12/2008 ND (<0.0022) ND (<0.0022) After Carbon Bed Sample

BelPSDPT 4/3/2008 0.190 0.180 Prior Carbon Treatment

BelPSD-Bed1N-Lead 4/3/2008 NQ (<0.0096) NQ (<0.0096) After Carbon Bed Sample

BelPSD-Bed1N-Lead 4/3/2008 (dup) ND (<0.0019) ND (<0.0019) After Carbon Bed Sample

BelPSD-Bed2N-Lag 4/3/2008 0.032 0.031 After Carbon Bed Sample

BelPSD-Bed1S-Lead 4/3/2008 0.069 0.066 After Carbon Bed Sample

BelPSD-Bed2S-Lag 4/3/2008 ND (<0.0019) ND (<0.0019) After Carbon Bed Sample

BelPSDPT 4/18/2008 0.230 0.220 Prior Carbon Treatment

BelPSD-Bed1N-Lead 4/18/2008 0.034 0.033 After Carbon Bed Sample

BelPSD-Bed2N-Lag 4/18/2008 0.018 0.017 After Carbon Bed Sample

BelPSD-CombinedEFF 4/18/2008 0.019 0.018 Combined Effluent

2/3/10 Page 3 of 41 Table 4.1
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Active Sampling Locations

Belpre, OH cont. BelPSDPT 5/27/2008 0.190 0.180 Prior Carbon Treatment

BelPSD-Bed1N-Lag 5/27/2008 ND (<0.0019) ND (<0.0019) After Carbon Bed Sample

BelPSD-Bed1N-Lag 5/27/2008 (dup) ND (<0.0019) ND (<0.0019) After Carbon Bed Sample

BelPSD-Bed2N-Lead 5/27/2008 ND (<0.0019) ND (<0.0019) After Carbon Bed Sample

BelPSD-Bed1S-Lag 5/27/2008 ND (<0.0019) ND (<0.0019) After Carbon Bed Sample

BelPSD-Bed2S-Lead 5/27/2008 NQ (<0.0096) NQ (<0.0096) After Carbon Bed Sample

BelPSDPT 6/13/2008 0.190 0.180 Prior Carbon Treatment

BelPSD-Bed1N-Lag 6/13/2008 ND (<0.0019) ND (<0.0019) After Carbon Bed Sample

BelPSD-Bed1N-Lag 6/13/2008 (dup) ND (<0.0019) ND (<0.0019) After Carbon Bed Sample

BelPSD-Bed2N-Lead 6/13/2008 ND (<0.0019) ND (<0.0019) After Carbon Bed Sample

BelPSD-Bed1S-Lag 6/13/2008 ND (<0.0019) ND (<0.0019) After Carbon Bed Sample

BelPSD-Bed2S-Lead 6/13/2008 0.023 0.022 After Carbon Bed Sample

BelPSDPT 7/16/2008 0.190 0.180 Prior Carbon Treatment

BelPSD-Bed1N-Lag 7/16/2008 ND (<0.0023) ND (<0.0023) After Carbon Bed Sample

BelPSD-Bed1N-Lag 7/16/2008 (dup) ND (<0.0023) ND (<0.0023) After Carbon Bed Sample

BelPSD-Bed2N-Lead 7/16/2008 ND (<0.0023) ND (<0.0023) After Carbon Bed Sample

BelPSD-Bed1S-Lag 7/16/2008 ND (<0.0023) ND (<0.0023) After Carbon Bed Sample

BelPSD-Bed2S-Lead 7/16/2008 0.050 0.048 After Carbon Bed Sample

BelPSDPT 8/11/2008 0.160 0.150 Prior Carbon Treatment

BelPSD-Bed1N-Lag 8/11/2008 ND (<0.0023) ND (<0.0023) After Carbon Bed Sample

BelPSD-Bed1N-Lag 8/11/2008 (dup) ND (<0.0023) ND (<0.0023) After Carbon Bed Sample

BelPSD-Bed2N-Lead 8/11/2008 ND (<0.0023) ND (<0.0023) After Carbon Bed Sample

BelPSD-Bed1S-Lag 8/11/2008 ND (<0.0023) ND (<0.0023) After Carbon Bed Sample

BelPSD-Bed2S-Lead 8/11/2008 0.053 0.051 After Carbon Bed Sample

BelPSDPT 9/10/2008 0.24 0.23 Prior to Treatment Sample

BelPSD-Bed1N-Lag 9/10/2008 ND(<0.0023 ) ND(<0.0023 ) After Carbon Bed Sample

BelPSD-Bed1N-Lag 9/10/2008 (dup) ND(<0.0023 ) ND(<0.0023 ) After Carbon Bed Sample

BelPSD-Bed2N-Lead 9/10/2008 0.015 0.014 After Carbon Bed Sample

BelPSD-Bed1S-Lag 9/10/2008 ND(<0.0023 ) ND(<0.0023 ) After Carbon Bed Sample

BelPSD-Bed2S-Lead 9/10/2008 0.065 0.062 After Carbon Bed Sample

BelPSDPT 10/20/2008 0.180 0.170 Prior to Treatment Sample

BelPSD-Bed1N-Lag 10/20/2008 ND (<0.0017) ND (<0.0017) After Carbon Bed Sample

BelPSD-Bed1N-Lag 10/20/08 (dup) ND (<0.0017) ND (<0.0017) After Carbon Bed Sample

BelPSD-Bed2N-Lead 10/20/2008 0.034 0.033 After Carbon Bed Sample

BelPSD-Bed1S-Lag 10/20/2008 ND (<0.0017) ND (<0.0017) After Carbon Bed Sample

BelPSD-Bed2S-Lead 10/20/2008 0.073 0.070 After Carbon Bed Sample

BelPSDPT 11/21/2008 0.200 0.190 Prior to Treatment Sample

BelPSD-Bed1N-Lag 11/21/2008 ND (<0.0017) ND (<0.0017) After Carbon Bed Sample

BelPSD-Bed1N-Lag 11/21/08 (dup) ND (<0.0017) ND (<0.0017) After Carbon Bed Sample

BelPSD-Bed2N-Lead 11/21/2008 0.046 0.044 After Carbon Bed Sample

BelPSD-Bed1S-Lag 11/21/2008 ND (<0.0017) ND (<0.0017) After Carbon Bed Sample

BelPSD-Bed2S-Lead 11/21/2008 0.069 0.066 After Carbon Bed Sample

BelPSDPT 12/16/2008 0.230 0.220 Prior to Treatment Sample

BelPSD-Bed1N-Lag 12/16/2008 ND (<0.0017) ND (<0.0017) After Carbon Bed Sample

BelPSD-Bed1N-Lag 12/16/08 (dup) ND (<0.0017) ND (<0.0017) After Carbon Bed Sample

BelPSD-Bed2N-Lead 12/16/2008 0.049 0.047 After Carbon Bed Sample

BelPSD-Bed1S-Lag 12/16/2008 ND (<0.0017) ND (<0.0017) After Carbon Bed Sample

BelPSD-Bed2S-Lead 12/16/2008 0.083 0.080 After Carbon Bed Sample

BelPSDPT 1/22/2009 0.240 0.230 Prior to Treatment Sample

BelPSD-Bed1N-Lag 1/22/2009 NQ (<0.013) NQ (<0.013) After Carbon Bed Sample

BelPSD-Bed1N-Lag 1/22/2009 (dup) NQ (<0.013) NQ (<0.013) After Carbon Bed Sample

BelPSD-Bed2N-Lead 1/22/2009 0.094 0.090 After Carbon Bed Sample

BelPSD-Bed1S-Lag 1/22/2009 ND (<0.0026) ND (<0.0026) After Carbon Bed Sample

2/3/10 Page 4 of 41 Table 4.1
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Active Sampling Locations

Belpre, OH cont. BelPSD-Bed2S-Lead 1/22/2009 0.100 0.098 After Carbon Bed Sample

BelPSDPT 2/26/2009 0.220 0.210 Prior to Treatment Sample

BelPSD-Bed1N-Lead 2/26/2009 0.018 0.017 After Carbon Bed Sample

BelPSD-Bed1N-Lead 2/26/2009 (dup) 0.020 0.019 After Carbon Bed Sample

BelPSD-Bed2N-Lag 2/26/2009 ND (<0.0026) ND (<0.0026) After Carbon Bed Sample

BelPSD-Bed1S-Lead 2/26/2009 ND (<0.0026) ND (<0.0026) After Carbon Bed Sample

BelPSD-Bed2S-Lag 2/26/2009 ND (<0.0026) ND (<0.0026) After Carbon Bed Sample

BelPSD-PT 3/26/2009 0.26 0.25 Prior to Treatment Sample

BelPSD-Bed1N-Lead-2 3/26/2009 (dup) 0.031 0.03 After Carbon Bed Sample-Dup

BelPSD-Bed1N-Lead 3/26/2009 0.027 0.026 After Carbon Bed Sample

BelPSD-Bed2N-Lag 3/26/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Bed Sample

BelPSD-Bed1S-Lead 3/26/2009 0.025 0.024 After Carbon Bed Sample

BelPSD-Bed2S-Lag 3/26/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Bed Sample

BelPSD-PT 4/23/2009 0.27 0.26 Prior to Treatment Sample

BelPSD-Bed1N-Lead-2 4/23/2009 (dup) 0.034 0.033 After Carbon Bed Sample-Dup

BelPSD-Bed1N-Lead 4/23/2009 0.034 0.033 After Carbon Bed Sample

BelPSD-Bed2N-Lag 4/23/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Bed Sample

BelPSD-Bed1S-Lead 4/23/2009 0.034 0.033 After Carbon Bed Sample

BelPSD-Bed2S-Lag 4/23/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Bed Sample

BelPSD-PT 5/14/2009 0.27 0.26 Prior to Treatment Sample

BelPSD-Bed1N-Lead 5/14/2009 0.055 0.053 After Carbon Bed Sample

BelPSD-Bed1N-Lead-2 5/14/2009 (dup) 0.044 0.042 After Carbon Bed Sample-Dup

BelPSD-Bed2N-Lag 5/14/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Bed Sample

BelPSD-Bed1S-Lead 5/14/2009 0.048 0.046 After Carbon Bed Sample

BelPSD-Bed2S-Lag 5/14/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Bed Sample

BelPSD-PT 6/25/2009 0.31 0.3 Prior to Treatment Sample

BelPSD-Bed1N-Lead 6/25/2009 0.087 0.084 After Carbon Bed Sample

BelPSD-Bed1N-Lead-2 6/25/2009 (dup) 0.084 0.081 After Carbon Bed Sample-Dup

BelPSD-Bed2N-Lag 6/25/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Bed Sample

BelPSD-Bed1S-Lead 6/25/2009 0.083 0.08 After Carbon Bed Sample

BelPSD-Bed2S-Lag 6/25/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Bed Sample

BelPSD-PT 7/23/2009 0.26 0.25 Prior to Treatment Sample

BelPSD-Bed1N-Lead 7/23/2009 0.099 0.097 After Carbon Bed Sample

BelPSD-Bed1N-Lead-2 7/23/2009 (dup) 0.11 0.11 After Carbon Bed Sample-Dup

BelPSD-Bed2N-Lag 7/23/2009 NQ (<0.013) NQ (<0.013) After Carbon Bed Sample

BelPSD-Bed1S-Lead 7/23/2009 0.086 0.083 After Carbon Bed Sample

BelPSD-Bed2S-Lag 7/23/2009 0.016 0.015 After Carbon Bed Sample

BelPSD-PT 8/21/2009 0.29 0.28 Prior to Treatment Sample

BelPSD-Bed1N-Lead 8/21/2009 0.11 0.11 After Carbon Bed Sample

BelPSD-Bed1N-Lead-2 8/21/2009 (dup) 0.092 0.088 After Carbon Bed Sample-Dup

BelPSD-Bed2N-Lag 8/21/2009 0.015 0.014 After Carbon Bed Sample

BelPSD-Bed1S-Lead 8/21/2009 0.12 0.12 After Carbon Bed Sample

BelPSD-Bed2S-Lag 8/21/2009 0.024 0.023 After Carbon Bed Sample

BelPSD-PT 9/23/2009 0.28 0.27 Prior to Treatment Sample

BelPSD-Bed1N-Lag 9/23/2009 ND(<0.0033 ) ND(<0.0033 ) After Carbon Bed Sample

BelPSD-Bed1N-Lag-2 9/23/2009 (dup) ND(<0.0033 ) ND(<0.0033 ) After Carbon Bed Sample-Dup

BelPSD-Bed2N-Lead 9/23/2009 0.056 0.054 After Carbon Bed Sample

BelPSD-Bed1S-Lag 9/23/2009 ND(<0.0033 ) ND(<0.0033 ) After Carbon Bed Sample

BelPSD-Bed2S-Lead 9/23/2009 0.077 0.074 After Carbon Bed Sample

BelPSD-PT 10/27/2009 0.27 0.26 Prior to Treatment Sample

BelPSD-Bed1N-Lag 10/27/2009 ND(<0.0033 ) ND(<0.0033 ) After Carbon Bed Sample

BelPSD-Bed1N-Lag-2 10/27/2009 (dup) ND(<0.0033 ) ND(<0.0033 ) After Carbon Bed Sample-Dup

BelPSD-Bed2N-Lead 10/27/2009 0.087 0.084 After Carbon Bed Sample

BelPSD-Bed1S-Lag 10/27/2009 ND(<0.0033 ) ND(<0.0033 ) After Carbon Bed Sample

BelPSD-Bed2S-Lead 10/27/2009 0.097 0.093 After Carbon Bed Sample

BelPSD-PT 11/19/2009 0.24 0.23 Prior to Treatment Sample

BelPSD-Bed1N-Lag 11/19/2009 ND(<0.0033 ) ND(<0.0033 ) After Carbon Bed Sample

BelPSD-Bed1N-Lag-2 11/19/2009 (dup) ND(<0.0033 ) ND(<0.0033 ) After Carbon Bed Sample-Dup

BelPSD-Bed2N-Lead 11/19/2009 0.1 0.1 After Carbon Bed Sample

BelPSD-Bed1S-Lag 11/19/2009 ND(<0.0033 ) ND(<0.0033 ) After Carbon Bed Sample

2/3/10 Page 5 of 41 Table 4.1
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Active Sampling Locations

Belpre, OH cont. BelPSD-Bed2S-Lead 11/19/2009 0.11 0.11 After Carbon Bed Sample

BelPSD-PT 12/15/2009 0.23 0.22 Prior to Treatment Sample

BelPSD-Bed1N-Lag 12/15/2009 ND(<0.0033 ) ND(<0.0033 ) After Carbon Bed Sample

BelPSD-Bed1N-Lag-2 12/15/2009 (dup) ND(<0.0033 ) ND(<0.0033 ) After Carbon Bed Sample-Dup

BelPSD-Bed2N-Lead 12/15/2009 0.1 0.097 After Carbon Bed Sample

BelPSD-Bed1S-Lag 12/15/2009 ND(<0.0033 ) ND(<0.0033 ) After Carbon Bed Sample

BelPSD-Bed2S-Lead 12/15/2009 0.11 0.11 After Carbon Bed Sample

WQConformation 3/3/2006 ND (<0.0023) ND (<0.0023) After Carbon Bed Sample

Hydro H2O-Bel 1/27/2006 0.213 0.204 NPDES Discharge Monitoring

BEL-Backwash 9/3/2009 NQ (<0.013) NQ (<0.013) NPDES Discharge Monitoring

BEL-Backwash1 2/9/2006 0.019 0.018 NPDES Discharge Monitoring

BEL-Backwash1 8/18/2006 ND (<0.013) ND (<0.013) NPDES Discharge Monitoring

BEL-Backwash1 8/18/06 (dup) ND (<0.013) ND (<0.013) NPDES Discharge Monitoring

BEL-Backwash1 11/30/2006 ND (<0.0018) ND (<0.0018) NPDES Discharge Monitoring

BEL-Backwash1 6/20/2007 ND (<0.0012) ND (<0.0012) NPDES Discharge Monitoring

BEL-Backwash1 12/7/2007 ND (<0.0031) ND (<0.0031) NPDES Discharge Monitoring

BEL-Backwash1 5/16/2008 ND (<0.0019) ND (<0.0019) NPDES Discharge Monitoring

BEL-Backwash1 2/26/2009 ND (<0.0026) ND (<0.0026) NPDES Discharge Monitoring

BEL-Backwash2 2/10/2006 0.014 0.014 NPDES Discharge Monitoring

BEL-Backwash2 8/19/2006 ND (<0.013) ND (<0.013) NPDES Discharge Monitoring

BEL-Backwash2 11/30/2006 ND (<0.0018) ND (<0.0018) NPDES Discharge Monitoring

BEL-Backwash2 11/30/06 (dup) ND (<0.0018) ND (<0.0018) NPDES Discharge Monitoring

BEL-Backwash2 6/20/2007 NQ (<0.0062) NQ (<0.0062) NPDES Discharge Monitoring

BEL-Backwash2 12/7/2007 ND (<0.0031) ND (<0.0031) NPDES Discharge Monitoring

BEL-Backwash2 5/16/2008 NQ (<0.0096) NQ (<0.0096) NPDES Discharge Monitoring

BEL-Backwash2 2/26/2009 NQ (<0.0026) NQ (<0.0026) NPDES Discharge Monitoring

BEL-Backwash3 5/16/2008 ND (<0.0019) ND (<0.0019) NPDES Discharge Monitoring

C-Stall-Belp 2/3/2006 0.109 0.105 NPDES Discharge Monitoring

C-Stall-Belp 8/17/2006 0.076 0.073 NPDES Discharge Monitoring

C-Stall-Belp 2/25/2009 0.08 0.077 NPDES Discharge Monitoring

BelPSDPT 3/10/2005 0.144 0.138 Prior Carbon Treatment

BelPSDPT 3/13/2006 0.222 0.213 Prior Carbon Treatment

BELPSDAT 2/7/2002 0.082 After Treatment Sample

BELPSDAT 3/25/2002 0.113 After Treatment Sample

BELPSDAT 4/23/2002 0.120 After Treatment Sample

BELPSDAT 7/13/2005 0.223 0.214 After Treatment Sample

BELPSDAT 7/13/05 (dup) 0.235 0.226 After Treatment Sample

BELPSDPW1 2/7/2002 0.100 Production Well

BELPSDPW1 3/25/2002 0.130 Production Well

BELPSDPW1 7/13/2005 0.205 0.197 Production Well

BELPSDPW1 9/22/2006 0.250 0.240 Production Well

BELPSDPW1 9/12/2007 0.180 0.170 Production Well

BELPSDPW1 9/24/2008 0.210 0.200 Production Well

BELPSDPW1 10/27/2009 0.22 0.21 Production Well

BELPSDPW2 2/7/2002 NQ (<0.050) Production Well

BELPSDPW2 2/7/2002 (dup) NQ (<0.050) duplicate

BELPSDPW2 3/25/2002 NQ (<0.050) Production Well

BELPSDPW2 7/13/2005 0.176 0.169 Production Well

BELPSDPW2 9/22/2006 0.170 0.160 Production Well

BELPSDPW2 9/12/2007 0.220 0.210 Production Well

BELPSDPW2 9/24/2008 0.210 0.200 Production Well

BELPSDPW2 10/27/2009 0.077 0.074 Production Well

BELPSDPW3 3/25/2002 0.141 Production Well

BELPSDPW3 4/23/2002 0.120 Production Well

BELPSDPW3 7/13/2005 0.227 0.218 Production Well

BELPSDPW3 9/22/2006 no sample port no sample port Production Well

BELPSDPW4 2/7/2002 0.101 Production Well

BELPSDPW4 3/25/2002 0.133 Production Well

BELPSDPW4 4/23/2002 0.114 Production Well

BELPSDPW4 7/13/2005 0.248 0.238 Production Well

2/3/10 Page 6 of 41 Table 4.1
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Active Sampling Locations

Belpre, OH cont. BELPSDPW4 9/22/2006 0.200 0.190 Production Well

BELPSDPW4 9/12/2007 0.260 0.250 Production Well

BELPSDPW4 9/24/2008 0.200 0.190 Production Well

BELPSDPW4 10/27/2009 0.27 0.26 Production Well

BELPSDPW5 2/7/2002 0.107 Production Well

BELPSDPW5 3/25/2002 0.103 Production Well

BELPSDPW5 4/23/2002 0.107 Production Well

BELPSDPW5 4/23/2002 (dup) 0.111 duplicate

BELPSDPW5 7/13/2005 0.232 0.223 Production Well

BELPSDPW5 9/22/2006 0.210 0.200 Production Well

BELPSDPW5 9/22/06 (dup) 0.210 0.200 duplicate

BELPSDPW5 9/12/2007 0.220 0.210 Production Well

BELPSDPW5 9/12/07 (dup) 0.240 0.230 duplicate

BELPSDPW5 9/24/2008 0.230 0.220 Production Well

BELPSDPW5 9/24/08 (dup) 0.240 0.230 duplicate

BELPSDPW5 10/27/2009 0.27 0.26 Production Well

BELPSDPW5 10/27/2009 (dup) 0.3 0.29 duplicate

Blennerhassett Island, WV BLENI TW0 2/21/2002 ND (<0.010) Test well

BLENI TW7 2/21/2002 NQ (<0.050) Test well

BLENI W19A 2/21/2002 0.316 Test well

BLENISLEPS1 1/30/2002 0.165 System 1/Well A - wellhouse spigot^

BLENISLEPS1 9/16/2004 0.497 System 2/Well B****^^

BLENISLEPS1 7/14/2005 0.034 0.033 System 1/Well A - wellhouse spigot^

Winter Well-BHI 4/7/2006 0.611 0.587 System 1/Well A - wellhouse spigot^

Summer Well-Raw-BHI 4/7/2006 0.060 0.058 System 2/Well B^^

Summer Well-AT-BHI 4/7/2006 0.048 0.046 System 2/Well B - after treatment^^

Little Hocking, OH LHPSD1 12/20/2001 1.820 Production Well

LHPSD1 1/21/2002 1.720 Production Well

LHPSD1 2/22/2002 2.370 Production Well

LHPSD1 3/26/2002 2.990 Production Well

LHPSD1 4/23/2002 2.020 Production Well

LHPSD1 8/21/2002 3.650 Production Well

LHPSD1 10/16/2002 3.410 Production Well

LHPSD1 2/26/2003 3.380 Production Well

LHPSD1 5/28/2003 3.340 Production Well

LHPSD1 8/29/2003 3.600 Production Well

LHPSD1 12/17/2003 1.680 Production Well

LHPSD1 12/17/2003 (dup) 1.600 duplicate

LHPSD1 2/24/2004 5.22 Production Well

LHPSD1 2/24/2004 (dup) 5.39 duplicate

LHPSD1 5/28/2004 4.38 Production Well

LHPSD1 5/28/2004 (dup) 4.38 duplicate

LHPSD1 9/16/2004 7.53 Production Well

LHPSD1 11/29/2004 9.03 8.68 Production Well

LHPSD1 1/21/2005 4.39 4.22 Production Well

LHPSD1 5/18/2005 5.88 5.65 Production Well

LHPSD1 7/13/2005 4.63 4.45 Production Well

LHPSD1 10/13/2005 7.07 6.79 Production Well

LHPSD1 2/10/2006 3.91 3.76 Production Well

LHPSD1 5/17/2006 5.18 4.98 Production Well

LHPSD1 11/28/2007 3.4 3.3 Production Well

LHPSD1 3/19/2008 4.7 4.5 Production Well

LHPSD1 6/13/2008 3.3 3.2 Production Well

LHPSD1 9/5/2008 3.4 3.3 Production Well

LHPSD1 12/15/2008 5.9 5.7 Production Well

LHPSD1 3/20/2009 5.3 5.1 Production Well

LHPSD1 5/29/2009 4.8 4.6 Production Well

LHPSD1 9/4/2009 5.1 4.9 Production Well

2/3/10 Page 7 of 41 Table 4.1
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Active Sampling Locations

Little Hocking, OH LHPSD2 12/20/2001 3.720 Production Well

cont. LHPSD2 12/20/2001 (dup) 3.520 duplicate

LHPSD2 1/21/2002 2.970 Production Well

LHPSD2 2/22/2002 2.030 Production Well

LHPSD2 2/22/2002 (dup) 2.070 duplicate

LHPSD2 3/26/2002 3.310 Production Well

LHPSD2 4/23/2002 3.400 Production Well

LHPSD2 8/21/2002 4.260 Production Well

LHPSD2 10/16/2002 3.980 Production Well

LHPSD2 2/26/2003 3.620 Production Well

LHPSD2 5/28/2003 4.310 Production Well

LHPSD2 8/29/2003 4.390 Production Well

LHPSD2 12/17/2003 2.630 Production Well

LHPSD2 2/24/2004 5.48 Production Well

LHPSD2 5/28/2004 5.07 Production Well

LHPSD2 9/16/2004 6.84 Production Well

LHPSD2 11/29/2004 9.89 9.5 Production Well

LHPSD2 1/21/2005 4.78 4.59 Production Well

LHPSD2 5/18/2005 7.28 6.99 Production Well

LHPSD2 7/13/2005 5.74 5.51 Production Well

LHPSD2 10/13/2005 7.55 7.25 Production Well

LHPSD2 2/10/2006 5.07 4.87 Production Well

LHPSD2 5/17/2006 6.42 6.17 Production Well

LHPSD2 11/28/2007 4 3.8 Production Well

LHPSD2 3/19/2008 2.5 2.4 Production Well

LHPSD2 6/13/2008 2.1 2 Production Well

LHPSD2 9/5/2008 3.3 3.2 Production Well

LHPSD2 12/15/2008 4.6 4.4 Production Well

LHPSD2 3/20/2009 4.4 4.2 Production Well

LHPSD2 5/29/2009 4.5 4.3 Production Well

LHPSD2 9/4/2009 5.2 5 Production Well

LHPSD3 12/20/2001 0.844 Production Well

LHPSD3 1/21/2002 0.744 Production Well

LHPSD3 2/22/2002 0.420 Production Well

LHPSD3 3/26/2002 0.827 Production Well

LHPSD3 4/23/2002 0.783 Production Well

LHPSD3 8/21/2002 0.952 Production Well

LHPSD3 10/16/2002 0.495 Production Well

LHPSD3 10/16/2002 (dup) 0.434 duplicate

LHPSD3 2/26/2003 0.733 Production Well

LHPSD3 5/28/2003 0.921 Production Well

LHPSD3 8/29/2003 1.220 Production Well

LHPSD3 12/17/2003 0.772 Production Well

LHPSD3 2/24/2004 1.87 Production Well

LHPSD3 5/28/2004 2.16 Production Well

LHPSD3 9/16/2004 2.92 Production Well

LHPSD3 11/29/2004 3.9 3.75 Production Well

LHPSD3 1/21/2005 1.78 1.71 Production Well

LHPSD3 5/18/2005 2.59 2.49 Production Well

LHPSD3 7/13/2005 1.82 1.75 Production Well

LHPSD3 10/13/2005 1.85 1.78 Production Well

LHPSD3 2/10/2006 1.08 1.04 Production Well

LHPSD3 2/10/06 (dup) 1.07 1.03 duplicate

LHPSD3 5/17/2006 1.26 1.21 Production Well

LHPSD3 11/28/2007 0.61 0.59 Production Well

2/3/10 Page 8 of 41 Table 4.1
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Active Sampling Locations

Little Hocking, OH LHPSD3 3/19/2008 0.52 0.50 Production Well

cont. LHPSD3 6/13/2008 0.39 0.37 Production Well

LHPSD3 9/5/2008 0.67 0.64 Production Well

LHPSD3 12/15/2008 1 0.96 Production Well

LHPSD3 3/20/2009 0.79 0.76 Production Well

LHPSD3 5/29/2009 1.1 1.1 Production Well

LHPSD3 9/4/2009 1.1 1.1 Production Well

LHPSD5 12/20/2001 7.660 Production Well

LHPSD5 1/21/2002 6.220 Production Well

LHPSD5 1/21/2002 (dup) 6.140 duplicate

LHPSD5 2/22/2002 5.690 Production Well

LHPSD5 3/26/2002 6.570 Production Well

LHPSD5 4/23/2002 6.110 Production Well

LHPSD5 8/21/2002 8.090 Production Well

LHPSD5 10/16/2002 8.580 Production Well

LHPSD5 2/26/2003 6.930 Production Well

LHPSD5 2/26/2003 (dup) 7.160 duplicate

LHPSD5 5/28/2003 6.920 Production Well

LHPSD5 8/29/2003 8.970 Production Well

LHPSD5 12/17/2003 4.670 Production Well

LHPSD5 2/24/2004 10.1 Production Well

LHPSD5 5/28/2004 8.64 Production Well

LHPSD5 9/16/2004 13.4 Production Well

LHPSD5 9/16/2004 (dup) 11.9 duplicate

LHPSD5 11/29/2004 18.6 17.9 Production Well

LHPSD5 11/29/2004 (dup) 16.9 16.2 duplicate

LHPSD5 1/5/2005 9.03 8.67 Production Well

LHPSD5 1/21/2005 6.61 6.35 Production Well

LHPSD5 1/21/05 (dup) 6.06 5.82 duplicate

LHPSD5 5/18/2005 15 14.4 Production Well

LHPSD5 5/18/2005 (dup) 14 13.4 duplicate

LHPSD5 7/13/2005 10.5 10.1 Production Well

LHPSD5 7/13/2005 (dup) 11.1 10.7 duplicate

LHPSD5 10/13/2005 14.7 14.1 Production Well

LHPSD5 10/13/05 (dup) 15.9 15.3 duplicate

LHPSD5 2/10/2006 10.7 10.3 Production Well

LHPSD5 5/17/2006 16.1 15.5 Production Well

LHPSD5 5/17/06 (dup) 14.4 13.8 duplicate

LHPSD5 11/28/2007 6.9 6.6 Production Well

LHPSD5 11/28/2007 (dup) 7.7 7.4 duplicate

LHPSD5 3/19/2008 6.0 5.8 Production Well

LHPSD5 3/19/08 (dup) 5.7 5.5 duplicate

LHPSD5 6/13/2008 5 4.8 Production Well

LHPSD5 6/13/08 (dup) 5.3 5.1 duplicate

LHPSD5 9/5/2008 6.6 6.3 Production Well

LHPSD5 9/5/08 (dup) 6.6 6.3 duplicate

LHPSD5 12/15/2008 9 8.6 Production Well

LHPSD5 12/15/08 (dup) 9.1 8.7 duplicate

LHPSD5 3/20/2009 9.9 9.5 Production Well

LHPSD5 3/20/2009 (dup) 10 9.6 duplicate

LHPSD5 5/29/2009 8.2 7.9 Production Well

LHPSD5 5/29/2009 (dup) 8.4 8.1 duplicate

LHPSD5 9/4/2009 10 9.9 Production Well

LHPSD5-2 9/4/2009 (dup) 10 10 duplicate

LHPSDTW1 1/22/2002 2.160 Test well

LHPSDTW1 8/21/2002 0.810 Test well

LHPSDTW1 5/15/2006 4.740 4.550 Test well

2/3/10 Page 9 of 41 Table 4.1
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Active Sampling Locations

Little Hocking, OH LHPSDTW2 1/22/2002 0.103 Test well

cont. LHPSDTW2 8/21/2002 0.081 Test well

LHPSDTW3 1/22/2002 4.480 Test well

LHPSDTW3 8/21/2002 4.170 Test well

LHPSDTW3 5/15/2006 11.900 11.400 Test well

LHPSDTW4 1/22/2002 37.100 Test well

LHPSDTW4 3/26/2002 33.300 Test well

LHPSDTW4 4/23/2002 28.700 Test well

LHPSDTW4 8/21/2002 12.300 Test well

LHPSDTW4 10/16/2002 14.500 Test well

LHPSDTW4 2/26/2003 22.500 Test well

LHPSDTW4 5/28/2003 33.300 Test Well

LHPSDTW4 5/28/2003 (dup) 33.500 duplicate

LHPSDTW4 8/29/2003 22.600 Test well

LHPSDTW4 8/29/2003 (dup) 23.000 duplicate

LHPSDTW4 5/15/2006 5.800 5.580 Test well

LHPSDTW5 1/22/2002 0.364 Test well

LHPSDTW5 8/21/2002 6.260 Test well

LHPSDTW5 5/15/2006 15.200 14.600 Test well

LHPSDTW6 1/22/2002 1.790 Test well

LHPSDTW6 8/21/2002 1.150 Test well

LHPSDTW6 8/21/2002 (dup) 1.230 duplicate

LHPSDTW6 5/17/2006 3.100 2.980 Test well

LHPSDTW6 9/20/2006 2.100 2.000 Test well

LHPSDTW6 11/29/2006 1.900 1.800 Test well

LHPSDTW6 3/21/2007 1.900 1.800 Test well

LHPSDTW6 5/30/2007 2.200 2.100 Test well

LHPSDTW6 9/12/2007 1.800 1.700 Test well

LHPSDTW6 11/14/2007 1.700 1.600 Test well

LHPSDTW6 3/19/2008 1.500 1.400 Test well

LHPSDTW6S 5/17/2006 1.160 1.110 Test well

LHPSDTW6S 9/20/2006 2.100 2.000 Test well

LHPSDTW6S 11/29/2006 2.200 2.100 Test well

LHPSDTW6S 3/21/2007 2.200 2.100 Test well

LHPSDTW6S 5/30/2007 2.600 2.500 Test well

LHPSDTW6S 9/12/2007 2.500 2.400 Test well

LHPSDTW6S 11/14/2007 2.800 2.700 Test well

LHPSDTW6S 3/19/2008 2.500 2.400 Test well

LHPSDTW9 1/22/2002 0.364 Test well

LHPSDTW9 8/21/2002 0.812 Test well

LHPSDTW9 5/15/2006 1.080 1.040 Test well

LHPSDTW10 1/21/2002 1.900 Test well

LHPSDTW10 8/21/2002 1.100 Test well

LHPSDTW10 5/16/2006 5.020 4.820 Test well

LHPSDTW11 1/21/2002 1.410 Test well

LHPSDTW11 8/21/2002 1.730 Test well

LHPSDWT11 5/15/2006 9.390 9.020 Test well

LHPSDTW12 1/21/2002 0.758 Test well

LHPSDTW12 8/21/2002 0.824 Test well

LHPSDTW12 5/16/2006 1.780 1.710 Test well

LHPSDTW12 9/20/2006 1.200 1.200 Test well

LHPSDTW12 11/29/2006 1.100 1.100 Test well

LHPSDTW12 3/20/2007 1.400 1.300 Test well

LHPSDTW12 5/29/2007 1.500 1.400 Test well

LHPSDTW12 9/11/2007 1.600 1.500 Test well

LHPSDTW12 11/13/2007 1.100 1.100 Test well

LHPSDTW12 3/19/2008 2.200 2.100 Test well

2/3/10 Page 10 of 41 Table 4.1
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Active Sampling Locations

Little Hocking, OH LHPSDTW12S 5/16/2006 15.500 14.900 Test well

cont. LHPSDTW12S 9/20/2006 18.000 17.000 Test well

LHPSDTW12S 11/29/2006 27.000 26.000 Test well

LHPSDTW12S 3/20/2007 37.000 36.000 Test well

LHPSDTW12S 5/29/2007 27.000 26.000 Test well

LHPSDTW12S 9/11/2007 29.000 28.000 Test well

LHPSDTW12S 11/13/2007 29.000 28.000 Test well

LHPSDTW12S 3/19/2008 25.000 24.000 Test well

LHPSDTW13D 4/11/2006 0.0795 0.0763 Temporary well point sample

LHPSDTW13D 4/11/2006 (dup) 0.0794 0.0762 Temporary well point sample

LHPSDTW13D 5/16/2006 0.4040 0.3880 Test well

LHPSDTW13D 9/19/2006 0.1700 0.1600 Test well

LHPSDTW13D 11/28/2006 0.1100 0.1100 Test well

LHPSDTW13D 3/20/2007 0.1500 0.1400 Test well

LHPSDTW13D 5/29/2007 0.0990 0.0950 Test well

LHPSDTW13D 9/12/2007 0.1000 0.1000 Test well

LHPSDTW13D 11/13/2007 0.4000 0.3800 Test well

LHPSDTW13D 3/18/2008 0.6700 0.6400 Test well

LHPSDTW13S 5/16/2006 70.9000 68.1000 Test well

LHPSDTW13S 9/19/2006 67.0000 64.0000 Test well

LHPSDTW13S 11/28/2006 55.0000 53.0000 Test well

LHPSDTW13S 11/28/06 (dup) 52.0000 50.0000 Test well

LHPSDTW13S 3/20/2007 51.0000 49.0000 Test well

LHPSDTW13S 3/20/07 (dup) 51.0000 49.0000 Test well

LHPSDTW13S 5/29/2007 60.0000 58.0000 Test well

LHPSDTW13S 9/12/2007 67.0000 64.0000 Test well

LHPSDTW13S 9/12/2007 (dup) 67.0000 64.0000 Test well

LHPSDTW13S 11/13/2007 79.0000 76.0000 Test well

LHPSDTW13S 11/13/07 (dup) 81.0000 78.0000 Test well

LHPSDTW13S 3/18/2008 71.0000 68.0000 Test well

LHPSDTW13S 3/18/08 (dup) 68.0000 65.0000 Test well

LHPSDTW14D 4/6/2006 1.190 1.140 Temporary well point sample

LHPSDTW14D 5/16/2006 1.680 1.610 Test well

LHPSDTW14D 9/19/2006 1.100 1.100 Test well

LHPSDTW14D 11/29/2006 0.780 0.750 Test well

LHPSDTW14D 3/21/2007 0.640 0.610 Test well

LHPSDTW14D 5/30/2007 0.880 0.850 Test well

LHPSDTW14D 9/12/2007 1.000 1.000 Test well

LHPSDTW14D 11/14/2007 0.800 0.770 Test well

LHPSDTW14D 3/19/2008 0.410 0.390 Test well

LHPSDTW14S 5/16/2006 53.900 51.800 Test well

LHPSDTW14S 9/19/2006 45.000 43.000 Test well

LHPSDTW14S 11/29/2006 41.000 39.000 Test well

LHPSDTW14S 3/21/2007 34.000 33.000 Test well

LHPSDTW14S 5/30/2007 30.000 29.000 Test well

LHPSDTW14S 5/30/07 (dup) 33.000 32.000 Test well

LHPSDTW14S 9/12/2007 33.000 32.000 Test well

LHPSDTW14S 11/14/2007 31.000 30.000 Test well

LHPSDTW14S 3/19/2008 35.000 34.000 Test well

TW15D-TWP 3/30/2006 0.237 0.228 Temporary well point sample

LHPSDTW15D 5/16/2006 1.530 1.470 Test well

LHPSDTW15D 5/16/06 (dup) 1.430 1.370 Test well

LHPSDTW15D 9/20/2006 1.300 1.300 Test well

LHPSDTW15D 11/28/2006 1.200 1.200 Test well

LHPSDTW15D 3/21/2007 1.200 1.200 Test well

LHPSDTW15D 5/30/2007 1.200 1.200 Test well

LHPSDTW15D 9/12/2007 1.200 1.200 Test well

LHPSDTW15D 11/14/2007 1.400 1.300 Test well

LHPSDTW15D 3/18/2008 1.400 1.300 Test well

2/3/10 Page 11 of 41 Table 4.1
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Active Sampling Locations

Little Hocking, OH TW15S-TWP 5/16/2006 29.800 28.600 Test well

cont. LHPSDTW15S 9/20/2006 23.000 22.000 Test well

LHPSDTW15S 9/20/06 (dup) 23.000 22.000 Test well

LHPSDTW15S 11/28/2006 14.000 13.000 Test well

LHPSDTW15S 3/21/2007 14.000 13.000 Test well

LHPSDTW15S 5/30/2007 17.000 16.000 Test well

LHPSDTW15S 9/12/2007 18.000 17.000 Test well

LHPSDTW15S 11/14/2007 20.000 19.000 Test well

LHPSDTW15S 3/18/2008 19.000 18.000 Test well

LHPSDEP001 1/22/2002 1.690 Finished Water

LHPSDEP001 3/26/2002 2.620 Finished Water

LHPSDEP001 4/23/2002 1.930 Finished Water

LHPSDEP001 10/16/2002 4.290 Finished Water

LHPSDEP001 2/26/2003 2.330 Finished Water

LHPSDEP001 5/28/2003 2.540 Finished Water

LHPSDEP001 8/29/2003 3.730 Finished Water

LHPSDEP001 12/17/2003 1.500 Finished Water

LHPSDEP001 2/24/2004 4.33 Finished Water

LHPSDEP001 5/28/2004 3.64 Finished Water

LHPSDEP001 9/16/2004 5.39 Finished Water

LHPSDEP001 11/29/2004 7.2 6.92 Finished Water

LHPSDEP001 1/21/2005 3.57 3.43 Finished Water

LHPSDEP001 5/18/2005 5.64 5.42 Finished Water

LHPSDEP001 7/13/2005 3.5 3.36 Finished Water

LHPSDEP001 10/13/2005 4.28 4.11 Finished Water

LHPSDEP001 2/10/2006 2.9 2.78 Finished Water

LHPSDEP001 5/17/2006 3.48 3.35 Finished Water

LHPSDEP001 9/20/2006 2.8 2.7 Finished Water

LHPSDEP001 11/29/2006 2.8 2.7 Finished Water

LHPSDEP001 3/21/2007 2.4 2.3 Finished Water

LHPSDEP001 5/30/2007 3.4 3.3 Finished Water

LHPSDEP001 9/12/2007 2.7 2.6 Finished Water

LHPSDEP001 11/14/2007 0.04 0.038 Finished Water

LHPSDEP001 3/19/2008 ND (<0.0022) ND (<0.0022) Finished Water

LHTORCHBS 1/22/2002 1.850 Booster Station Sample

BARTLETTCC 1/22/2002 1.940 Booster Station Sample

339B STA 1/22/2002 1.810 Booster Station Sample

Rigblank 3/28/2006 NQ (<0.0049) NQ (<0.0049) 2006 Investigation Samples

Pumpblank 3/31/2006 ND (<0.001) ND (<0.001) 2006 Investigation Samples

HYDRO H2O-LHWA-1 8/7/2007 3.100 3.000 GAC Construction Sample

HYDRO H2O-LHWA-2 9/7/2007 3.200 3.100 GAC Construction Sample

HYDRO H2O-LHWA-3 9/17/2007 3.800 3.700 GAC Construction Sample

HYDRO H2O-LHWA-4 9/25/2007 2.800 2.700 GAC Construction Sample

HYDRO H2O-LHWA-5 10/9/2007 2.000 1.900 GAC Construction Sample

C-STALL-LHWA-W-PV1 9/18/2007 0.180 0.170 GAC Construction Sample

C-STALL-LHWA-W-PV2 9/18/2007 0.200 0.190 GAC Construction Sample

C-STALL-LHWA 3/5/2008 0.120 0.120 NPDES Discharge Monitoring

C-STALL-LHWA 5/22/2008 0.029 0.028 NPDES Discharge Monitoring

C-STALL-LHWA 7/15/2008 0.043 0.041 NPDES Discharge Monitoring

C-STALL-LHWA 9/30/2008 0.280 0.270 NPDES Discharge Monitoring

C-STALL-LHWA 12/22/2008 0.029 0.028 NPDES Discharge Monitoring

C-STALL-LHWA 3/13/2009 0.027 0.026 NPDES Discharge Monitoring

C-STALL-LHWA 5/14/2009 0.099 0.095 NPDES Discharge Monitoring

C-STALL-LHWA 7/7/2009 0.18 0.17 NPDES Discharge Monitoring

C-STALL-LHWA 9/24/2009 0.064 0.061 NPDES Discharge Monitoring

C-STALL-LHWA 12/3/2009 NQ (<0.01) NQ (<0.01) NPDES Discharge Monitoring

2/3/10 Page 12 of 41 Table 4.1
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Active Sampling Locations

Little Hocking, OH BWASH-LHWA-E 9/19/2007 0.084 0.081 GAC Construction Sample

cont. BWASH-LHWA-W 9/19/2007 0.078 0.075 GAC Construction Sample

BWASH-LHWA-E 12/21/2007 1.800 1.700 NPDES Discharge Monitoring

BWASH-LHWA-W 12/21/2007 2.100 2.000 NPDES Discharge Monitoring

BWASH-LHWA-E 1/11/2008 0.011 0.011 NPDES Discharge Monitoring

BWASH-LHWA-W 1/11/2008 0.015 0.014 NPDES Discharge Monitoring

BWASH-LHWA-E 3/6/2008 NQ (<0.011) NQ (<0.011) NPDES Discharge Monitoring

BWASH-LHWA-W 3/6/2008 0.021 0.020 NPDES Discharge Monitoring

BWASH-LHWA-E 5/23/2008 NQ (<0.0096) NQ (<0.0096) NPDES Discharge Monitoring

BWASH-LHWA-W 5/23/2008 NQ (<0.0096) NQ (<0.0096) NPDES Discharge Monitoring

BWASH-LHWA-E 7/16/2008 0.041 0.039 NPDES Discharge Monitoring

BWASH-LHWA-W 7/16/2008 0.026 0.025 NPDES Discharge Monitoring

BWASH-LHWA-E 10/1/2008 NQ (<0.0085) NQ (<0.0085) NPDES Discharge Monitoring

BWASH-LHWA-W 10/1/2008 NQ (<0.0085) NQ (<0.0085) NPDES Discharge Monitoring

BWASH-LHWA-E 12/23/2008 NQ (<0.013) NQ (<0.013) NPDES Discharge Monitoring

BWASH-LHWA-W 12/23/2008 NQ (<0.013) NQ (<0.013) NPDES Discharge Monitoring

BWASH-LHWA-E 3/6/2009 0.720 0.690 NPDES Discharge Monitoring

BWASH-LHWA-W 3/6/2009 1.500 1.400 NPDES Discharge Monitoring

BWASH-LHWA-W 3/14/2009 NQ (<0.013) NQ (<0.013) NPDES Discharge Monitoring

BWASH-LHWA-W 5/6/2009 0.84 0.81 NPDES Discharge Monitoring

BWASH-LHWA 5/15/2009 NQ (<0.013) NQ (<0.013) NPDES Discharge Monitoring

BWASH-LHWA 7/8/2009 0.028 0.027 NPDES Discharge Monitoring

BWASH-LHWA 7/9/2009 ND(<0.0026 ) ND(<0.0026 ) NPDES Discharge Monitoring

BWASH-LHWA-2W 9/15/2009 2.5 2.4 NPDES Discharge Monitoring

BWASH-LHWA 9/25/2009 0.03 0.029 NPDES Discharge Monitoring

BWASH-LHWA 12/4/2009 ND(<0.0021 ) ND(<0.0021 ) NPDES Discharge Monitoring

LHWAPSD-CONTACTTANKDIP 11/27/2007 0.034 0.033 GAC System Samples

LHWAPSD-PUMP3-

RUNNING 11/27/2007 0.032 0.031 GAC System Samples

LHWAPSD-PUMP3-

STOPPED 11/27/2007 0.034 0.033 GAC System Samples

LHWAPSD-PRECHEMFEED 12/10/2007 ND (<0.0031) ND (<0.0031) Prior to Chlorine Contact Tank

LHWAPSDPOSTCHEMFEED 12/10/2007 ND (<0.0031) ND (<0.0031) Prior to Chlorine Contact Tank

LHWAPSD-PT-EAST 10/16/2007 2.400 2.300 Prior Carbon Treatment

LHWAPSD-BED1E-LEAD 10/16/2007 0.042 0.040 After Treatment Sample

LHWAPSD-BED2E-LAG 10/16/2007 ND (<0.0031) ND (<0.0031) After Treatment Sample

LHWAPSD-BED1W-LEAD 10/16/2007 ND (<0.0031) ND (<0.0031) After Treatment Sample

LHWAPSD-BED2W-LAG 10/16/2007 ND (<0.0031) ND (<0.0031) After Treatment Sample

LHWAPSD-PT 11/2/2007 2.900 2.800 Prior Carbon Treatment

LHWAPSD-BED1E-LEAD 11/2/2007 ND (<0.0031) ND (<0.0031) After Treatment Sample

LHWAPSD-BED2E-LAG 11/2/2007 ND (<0.0031) ND (<0.0031) After Treatment Sample

LHWAPSD-BED1W-LEAD 11/2/2007 ND (<0.0031) ND (<0.0031) After Treatment Sample

LHWAPSD-BED2W-LAG 11/2/2007 ND (<0.0031) ND (<0.0031) After Treatment Sample

LHWAPSD-ATCONTACTTANK 11/2/2007 0.028 0.027 Chlorine Contact Tank Effluent

LHWAPSD-PT 11/14/2007 4.000 3.800 Prior Carbon Treatment

LHWAPSD-BED1E-LEAD 11/14/2007 NQ (<0.016) NQ (<0.016) After Treatment Sample

LHWAPSD-BED2E-LAG 11/14/2007 NQ (<0.016) NQ (<0.016) After Treatment Sample

LHWAPSD-BED1W-LEAD 11/14/2007 ND (<0.0031) ND (<0.0031) After Treatment Sample

LHWAPSD-BED2W-LAG 11/14/2007 ND (<0.0031) ND (<0.0031) After Treatment Sample

LHWAPSD-ATCONTACTTANK-PUMP 11/14/2007 0.031 0.030 Chlorine Contact Tank Effluent

LHWAPSD-ATCONTACTTANK-SINK 11/14/2007 0.029 0.028 Chlorine Contact Tank Effluent

LHWAPSD-PT 11/27/2007 4.900 4.700 Prior Carbon Treatment

LHWAPSD-BED1E-LEAD 11/27/2007 NQ (<0.016) NQ (<0.016) After Treatment Sample

LHWAPSD-BED2E-LAG 11/27/2007 ND (<0.0031) ND (<0.0031) After Treatment Sample

LHWAPSD-BED1W-LEAD 11/27/2007 ND (<0.0031) ND (<0.0031) After Treatment Sample

2/3/10 Page 13 of 41 Table 4.1
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Active Sampling Locations

Little Hocking, OH LHWAPSD-BED2W-LAG 11/27/2007 ND (<0.0031) ND (<0.0031) After Treatment Sample

cont. LHWAPSD-PT 12/10/2007 3.300 3.200 Prior Carbon Treatment

LHWAPSD-BED1E-LEAD 12/10/2007 0.021 0.020 After Treatment Sample

LHWAPSD-BED2E-LAG 12/10/2007 ND (<0.0031) ND (<0.0031) After Treatment Sample

LHWAPSD-BED1W-LEAD 12/10/2007 ND (<0.0031) ND (<0.0031) After Treatment Sample

LHWAPSD-BED2W-LAG 12/10/2007 ND (<0.0031) ND (<0.0031) After Treatment Sample

LHWAPSD-PT 12/27/2007 2.400 2.300 Prior Carbon Treatment

LHWAPSD-BED1E-LEAD 12/27/2007 0.055 0.053 After Treatment Sample

LHWAPSD-BED2E-LAG 12/27/2007 ND (<0.0031) ND (<0.0031) After Treatment Sample

LHWAPSD-BED1W-LEAD 12/27/2007 NQ (<0.016) NQ (<0.016) After Treatment Sample

LHWAPSD-BED2W-LAG 12/27/2007 ND (<0.0031) ND (<0.0031) After Treatment Sample

LHWAPSD-ATCONTACTTANK 12/27/2007 ND (<0.0031) ND (<0.0031) Chlorine Contact Tank Effluent

LHWAPSD-PT 1/10/2008 1.900 1.800 Prior Carbon Treatment

LHWAPSD-BED1E-LEAD 1/10/2008 0.068 0.065 After Treatment Sample

LHWAPSD-BED2E-LAG 1/10/2008 ND (<0.0022) ND (<0.0022) After Treatment Sample

LHWAPSD-BED1W-LEAD 1/10/2008 0.018 0.017 After Treatment Sample

LHWAPSD-BED2W-LAG 1/10/2008 ND (<0.0022) ND (<0.0022) After Treatment Sample

LHWAPSD-PT 1/24/2008 3.600 3.500 Prior Carbon Treatment

LHWAPSD-BED1E-LAG 1/24/2008 ND (<0.0022) ND (<0.0022) After Treatment Sample

LHWAPSD-BED2E-LEAD 1/24/2008 NQ (<0.011) NQ (<0.011) After Treatment Sample

LHWAPSD-BED1W-LAG 1/24/2008 ND (<0.0022) ND (<0.0022) After Treatment Sample

LHWAPSD-BED2W-LEAD 1/24/2008 ND (<0.0022) ND (<0.0022) After Treatment Sample

LHWAPSD-ATCONTACTTANK 1/24/2008 ND (<0.0022) ND (<0.0022) Chlorine Contact Tank Effluent

LHWAPSD-PT 2/7/2008 2.900 2.800 Prior Carbon Treatment

LHWAPSD-BED1E-LAG 2/7/2008 ND (<0.0022) ND (<0.0022) After Treatment Sample

LHWAPSD-BED2E-LEAD 2/7/2008 0.051 0.049 After Treatment Sample

LHWAPSD-BED1W-LAG 2/7/2008 ND (<0.0022) ND (<0.0022) After Treatment Sample

LHWAPSD-BED2W-LEAD 2/7/2008 NQ (<0.011) NQ (<0.011) After Treatment Sample

LHWAPSD-PT 2/21/2008 3.2 3.1 Prior to Treatment Sample

LHWAPSD-BED1E-LAG 2/21/2008 ND (<0.0022) ND (<0.0022) After Carbon Treatment Sample

LHWAPSD-BED2E-LEAD 2/21/2008 0.17 0.16 After Carbon Treatment Sample

LHWAPSD-BED1W-LAG 2/21/2008 ND (<0.0022) ND (<0.0022) After Carbon Treatment Sample

LHWAPSD-BED2W-LEAD 2/21/2008 0.034 0.033 After Carbon Treatment Sample

LHWAPSD-ATCONTACTTANK 2/21/2008 ND (<0.0022) ND (<0.0022) GAC System Samples

LHWAPSD-PT 3/6/2008 3.7 3.6 Prior Carbon Treatment

LHWAPSD-BED1E-LEAD 3/6/2008 ND (<0.0022) ND (<0.0022) After Treatment Sample

LHWAPSD-BED2E-LAG 3/6/2008 ND (<0.0022) ND (<0.0022) After Treatment Sample

LHWAPSD-BED1W-LEAD 3/6/2008 ND (<0.0022) ND (<0.0022) After Treatment Sample

LHWAPSD-BED2W-LAG 3/6/2008 ND (<0.0022) ND (<0.0022) After Treatment Sample

LHWAPSD-PT 3/19/2008 2.900 2.800 Prior Carbon Treatment

LHWAPSD-BED1E-LEAD 3/19/2008 ND (<0.0022) ND (<0.0022) After Treatment Sample

LHWAPSD-BED2E-LAG 3/19/2008 ND (<0.0022) ND (<0.0022) After Treatment Sample

LHWAPSD-BED1W-LEAD 3/19/2008 ND (<0.0022) ND (<0.0022) After Treatment Sample

LHWAPSD-BED2W-LAG 3/19/2008 ND (<0.0022) ND (<0.0022) After Treatment Sample

LHWAPSD-ATCONTACTTANK 3/19/2008 ND (<0.0022) ND (<0.0022) GAC System Samples

LHWAPSD-PT 4/2/2008 2.100 2.000 Prior Carbon Treatment

LHWAPSD-BED1E-LEAD 4/2/2008 NQ (<0.0096) NQ (<0.0096) After Treatment Sample

LHWAPSD-BED2E-LAG 4/2/2008 ND (<0.0019) ND (<0.0019) After Treatment Sample

LHWAPSD-BED1W-LEAD 4/2/2008 ND (<0.0019) ND (<0.0019) After Treatment Sample

LHWAPSD-BED2W-LAG 4/2/2008 ND (<0.0019) ND (<0.0019) After Treatment Sample

LHWAPSD-PT 4/18/2008 2.800 2.700 Prior Carbon Treatment

LHWAPSD-BED1E-LEAD 4/18/2008 NQ (<0.0096) NQ (<0.0096) After Treatment Sample

LHWAPSD-BED2E-LAG 4/18/2008 ND (<0.0019) ND (<0.0019) After Treatment Sample

LHWAPSD-BED1W-LEAD 4/18/2008 ND (<0.0019) ND (<0.0019) After Treatment Sample

LHWAPSD-BED2W-LAG 4/18/2008 ND (<0.0019) ND (<0.0019) After Treatment Sample

2/3/10 Page 14 of 41 Table 4.1
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Active Sampling Locations

Little Hocking, OH 

cont.

LHWAPSD-ATCONTACTTANK 4/18/2008 ND (<0.0019) ND (<0.0019) GAC System Samples

LHWAPSD-PT 5/2/2008 4.700 4.500 Prior Carbon Treatment

LHWAPSD-BED1E-LEAD 5/2/2008 0.060 0.058 After Treatment Sample

LHWAPSD-BED2E-LAG 5/2/2008 ND (<0.0019) ND (<0.0019) After Treatment Sample

LHWAPSD-BED1W-LEAD 5/2/2008 0.017 0.016 After Treatment Sample

LHWAPSD-BED2W-LAG 5/2/2008 ND (<0.0019) ND (<0.0019) After Treatment Sample

LHWAPSD-PT 5/16/2008 3.500 3.400 Prior Carbon Treatment

LHWAPSD-BED1E-LEAD 5/16/2008 0.081 0.078 After Treatment Sample

LHWAPSD-BED2E-LAG 5/16/2008 ND (<0.0019) ND (<0.0019) After Treatment Sample

LHWAPSD-BED1W-LEAD 5/16/2008 0.051 0.049 After Treatment Sample

LHWAPSD-BED2W-LAG 5/16/2008 ND (<0.0019) ND (<0.0019) After Treatment Sample

LHWAPSD-ATCONTACTTANK 5/16/2008 ND (<0.0019) ND (<0.0019) GAC System Samples

LHWAPSD-PT 5/30/2008 3.300 3.200 Prior Carbon Treatment

LHWAPSD-BED1E-LAG 5/30/2008 ND (<0.0019) ND (<0.0019) After Treatment Sample

LHWAPSD-BED2E-LEAD 5/30/2008 ND (<0.0019) ND (<0.0019) After Treatment Sample

LHWAPSD-BED1W-LAG 5/30/2008 ND (<0.0019) ND (<0.0019) After Treatment Sample

LHWAPSD-BED2W-LEAD 5/30/2008 ND (<0.0019) ND (<0.0019) After Treatment Sample

LHWAPSD-PT 6/13/2008 3.600 3.500 Prior Carbon Treatment

LHWAPSD-BED1E-LAG 6/13/2008 ND (<0.0019) ND (<0.0019) After Treatment Sample

LHWAPSD-BED2E-LEAD 6/13/2008 0.011 0.011 After Treatment Sample

LHWAPSD-BED1W-LAG 6/13/2008 ND (<0.0019) ND (<0.0019) After Treatment Sample

LHWAPSD-BED2W-LEAD 6/13/2008 ND (<0.0019) ND (<0.0019) After Treatment Sample

LHWAPSD-ATCONTACTTANK 6/13/2008 ND (<0.0019) ND (<0.0019) GAC System Samples

LHWAPSD-PT 6/27/2008 3.600 3.500 Prior Carbon Treatment

LHWAPSD-BED1E-LAG 6/27/2008 ND (<0.0023) ND (<0.0023) After Treatment Sample

LHWAPSD-BED2E-LEAD 6/27/2008 0.050 0.048 After Treatment Sample

LHWAPSD-BED1W-LAG 6/27/2008 ND (<0.0023) ND (<0.0023) After Treatment Sample

LHWAPSD-BED2W-LEAD 6/27/2008 0.015 0.014 After Treatment Sample

LHWAPSD-PT 7/11/2008 4.300 4.100 Prior Carbon Treatment

LHWAPSD-BED1E-LAG 7/11/2008 ND (<0.0023) ND (<0.0023) After Treatment Sample

LHWAPSD-BED2E-LEAD 7/11/2008 0.120 0.120 After Treatment Sample

LHWAPSD-BED1W-LAG 7/11/2008 ND (<0.0023) ND (<0.0023) After Treatment Sample

LHWAPSD-BED2W-LEAD 7/11/2008 0.066 0.063 After Treatment Sample

LHWAPSD-ATCONTACTTANK 7/11/2008 ND (<0.0023) ND (<0.0023) GAC System Samples

LHWAPSD-PT 7/25/2008 4.800 4.600 Prior Carbon Treatment

LHWAPSD-BED1E-LEAD 7/25/2008 ND (<0.0023) ND (<0.0023) After Treatment Sample

LHWAPSD-BED2E-LAG 7/25/2008 NQ (<0.012) NQ (<0.012) After Treatment Sample

LHWAPSD-BED1W-LEAD 7/25/2008 ND (<0.0023) ND (<0.0023) After Treatment Sample

LHWAPSD-BED2W-LAG 7/25/2008 ND (<0.0023) ND (<0.0023) After Treatment Sample

LHWAPSD-PT 8/6/2008 4.600 4.400 Prior Carbon Treatment

LHWAPSD-BED1E-LEAD 8/6/2008 ND (<0.0023) ND (<0.0023) After Treatment Sample

LHWAPSD-BED2E-LAG 8/6/2008 ND (<0.0023) ND (<0.0023) After Treatment Sample

LHWAPSD-BED1W-LEAD 8/6/2008 ND (<0.0023) ND (<0.0023) After Treatment Sample

LHWAPSD-BED2W-LAG 8/6/2008 ND (<0.0023) ND (<0.0023) After Treatment Sample

LHWAPSD-ATCONTACTTANK 8/6/2008 ND (<0.0023) ND (<0.0023) GAC System Samples

LHWAPSD-PT 8/22/2008 4.700 4.500 Prior Carbon Treatment

LHWAPSD-BED1E-LEAD 8/22/2008 ND (<0.0023) ND (<0.0023) After Treatment Sample

LHWAPSD-BED2E-LAG 8/22/2008 ND (<0.0023) ND (<0.0023) After Treatment Sample

LHWAPSD-BED1W-LEAD 8/22/2008 ND (<0.0023) ND (<0.0023) After Treatment Sample

LHWAPSD-BED2W-LAG 8/22/2008 ND (<0.0023) ND (<0.0023) After Treatment Sample

LHWAPSD-PT 9/5/2008 4.600 4.400 Prior Carbon Treatment

LHWAPSD-BED1E-LEAD 9/5/2008 0.014 0.013 After Treatment Sample

LHWAPSD-BED2E-LAG 9/5/2008 ND (<0.0023) ND (<0.0023) After Treatment Sample

LHWAPSD-BED1W-LEAD 9/5/2008 ND (<0.0023) ND (<0.0023) After Treatment Sample

LHWAPSD-BED2W-LAG 9/5/2008 ND (<0.0023) ND (<0.0023) After Treatment Sample

2/3/10 Page 15 of 41 Table 4.1
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Active Sampling Locations

Little Hocking, OH 

cont.

LHWAPSD-ATCONTACTTANK 9/5/2008 ND (<0.0023) ND (<0.0023) GAC System Samples

LHWAPSD-PT 9/19/2008 3.700 3.600 Prior Carbon Treatment

LHWAPSD-BED1E-LEAD 9/19/2008 0.052 0.050 After Treatment Sample

LHWAPSD-BED2E-LAG 9/19/2008 ND (<0.0023) ND (<0.0023) After Treatment Sample

LHWAPSD-BED1W-LEAD 9/19/2008 NQ (<0.012) NQ (<0.012) After Treatment Sample

LHWAPSD-BED2W-LAG 9/19/2008 ND (<0.0023) ND (<0.0023) After Treatment Sample

LHWAPSD-PT 10/3/2008 5.000 4.800 Prior Carbon Treatment

LHWAPSD-BED1E-LAG 10/3/2008 ND(<0.0017 ) ND(<0.0017 ) After Treatment Sample

LHWAPSD-BED2E-LEAD 10/3/2008 ND(<0.0017 ) ND(<0.0017 ) After Treatment Sample

LHWAPSD-BED1W-LAG 10/3/2008 ND(<0.0017 ) ND(<0.0017 ) After Treatment Sample

LHWAPSD-BED2W-LEAD 10/3/2008 ND(<0.0017 ) ND(<0.0017 ) After Treatment Sample

LHWAPSD-ATCONTACTTANK 10/3/2008 ND(<0.0017 ) ND(<0.0017 ) GAC System Samples

LHWAPSD-PT 10/17/2008 5.200 5.000 Prior Carbon Treatment

LHWAPSD-BED1E-LAG 10/17/2008 ND(<0.0017 ) ND(<0.0017 ) After Treatment Sample

LHWAPSD-BED2E-LEAD 10/17/2008 ND(<0.0017 ) ND(<0.0017 ) After Treatment Sample

LHWAPSD-BED1W-LAG 10/17/2008 ND(<0.0017 ) ND(<0.0017 ) After Treatment Sample

LHWAPSD-BED2W-LEAD 10/17/2008 ND(<0.0017 ) ND(<0.0017 ) After Treatment Sample

LHWAPSD-PT 10/31/2008 4.800 4.600 Prior Carbon Treatment

LHWAPSD-BED1E-LAG 10/31/2008 ND(<0.0017 ) ND(<0.0017 ) After Treatment Sample

LHWAPSD-BED2E-LEAD 10/31/2008 ND(<0.0017 ) ND(<0.0017 ) After Treatment Sample

LHWAPSD-BED1W-LAG 10/31/2008 ND(<0.0017 ) ND(<0.0017 ) After Treatment Sample

LHWAPSD-BED2W-LEAD 10/31/2008 ND(<0.0017 ) ND(<0.0017 ) After Treatment Sample

LHWAPSD-ATCONTACTTANK 10/31/2008 ND(<0.0017 ) ND(<0.0017 ) GAC System Samples

LHWAPSD-PT 11/14/2008 5.400 5.200 Prior Carbon Treatment

LHWAPSD-BED1E-LAG 11/14/2008 ND(<0.0017 ) ND(<0.0017 ) After Treatment Sample

LHWAPSD-BED2E-LEAD 11/14/2008 NQ (<0.0085) NQ (<0.0085) After Treatment Sample

LHWAPSD-BED1W-LAG 11/14/2008 ND(<0.0017 ) ND(<0.0017 ) After Treatment Sample

LHWAPSD-BED2W-LEAD 11/14/2008 ND(<0.0017 ) ND(<0.0017 ) After Treatment Sample

LHWAPSD-PT 12/1/2008 4.400 4.200 Prior Carbon Treatment

LHWAPSD-BED1E-LAG 12/1/2008 ND(<0.0017 ) ND(<0.0017 ) After Treatment Sample

LHWAPSD-BED2E-LEAD 12/1/2008 0.019 0.018 After Treatment Sample

LHWAPSD-BED1W-LAG 12/1/2008 ND(<0.0017 ) ND(<0.0017 ) After Treatment Sample

LHWAPSD-BED2W-LEAD 12/1/2008 0.012 0.012 After Treatment Sample

LHWAPSD-ATCONTACTTANK 12/1/2008 ND(<0.0017 ) ND(<0.0017 ) GAC System Samples

LHWAPSD-PT 12/15/2008 5.400 5.200 Prior Carbon Treatment

LHWAPSD-BED1E-LAG 12/15/2008 ND(<0.0017 ) ND(<0.0017 ) After Treatment Sample

LHWAPSD-BED2E-LEAD 12/15/2008 0.078 0.075 After Treatment Sample

LHWAPSD-BED1W-LAG 12/15/2008 ND(<0.0017 ) ND(<0.0017 ) After Treatment Sample

LHWAPSD-BED2W-LEAD 12/15/2008 0.074 0.071 After Treatment Sample

LHWAPSD-PT 12/29/2008 6.000 5.800 Prior Carbon Treatment

LHWAPSD-BED1E-LEAD 12/29/2008 ND(<0.0017 ) ND(<0.0017 ) After Treatment Sample

LHWAPSD-BED2E-LAG 12/29/2008 ND(<0.0017 ) ND(<0.0017 ) After Treatment Sample

LHWAPSD-BED1W-LEAD 12/29/2008 ND(<0.0017 ) ND(<0.0017 ) After Treatment Sample

LHWAPSD-BED2W-LAG 12/29/2008 ND(<0.0017 ) ND(<0.0017 ) After Treatment Sample

LHWAPSD-ATCONTACTTANK 12/29/2008 ND(<0.0017 ) ND(<0.0017 ) GAC System Samples

LHWAPSD-PT 1/9/2009 5.1 4.9 Prior Carbon Treatment

LHWAPSD-BED1E-LEAD 1/9/2009 ND(<0.0026 ) ND(<0.0026 ) After Treatment Sample

LHWAPSD-BED2E-LAG 1/9/2009 ND(<0.0026 ) ND(<0.0026 ) After Treatment Sample

LHWAPSD-BED1W-LEAD 1/9/2009 ND(<0.0026 ) ND(<0.0026 ) After Treatment Sample

LHWAPSD-BED2W-LAG 1/9/2009 ND(<0.0026 ) ND(<0.0026 ) After Treatment Sample

LHWAPSD-PT 1/23/2009 6.1 5.9 Prior Carbon Treatment

LHWAPSD-BED1E-LEAD 1/23/2009 ND(<0.0026 ) ND(<0.0026 ) After Treatment Sample

LHWAPSD-BED2E-LAG 1/23/2009 ND(<0.0026 ) ND(<0.0026 ) After Treatment Sample

LHWAPSD-BED1W-LEAD 1/23/2009 ND(<0.0026 ) ND(<0.0026 ) After Treatment Sample

LHWAPSD-BED2W-LAG 1/23/2009 ND(<0.0026 ) ND(<0.0026 ) After Treatment Sample

2/3/10 Page 16 of 41 Table 4.1
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Active Sampling Locations

Little Hocking, OH 

cont.

LHWAPSD-ATCONTACTTANK 1/23/2009 ND(<0.0026 ) ND(<0.0026 ) GAC System Samples

LHWAPSD-PT 2/6/2009 5.9 5.7 Prior Carbon Treatment

LHWAPSD-BED1E-LEAD 2/6/2009 NQ (<0.013) NQ (<0.013) After Treatment Sample

LHWAPSD-BED2E-LAG 2/6/2009 ND(<0.0026 ) ND(<0.0026 ) After Treatment Sample

LHWAPSD-BED1W-LEAD 2/6/2009 ND(<0.0026 ) ND(<0.0026 ) After Treatment Sample

LHWAPSD-BED2W-LAG 2/6/2009 ND(<0.0026 ) ND(<0.0026 ) After Treatment Sample

LHWAPSD-PT 2/20/2009 5.4 5.2 Prior Carbon Treatment

LHWAPSD-BED1E-LEAD 2/20/2009 0.022 0.021 After Treatment Sample

LHWAPSD-BED2E-LAG 2/20/2009 ND(<0.0026 ) ND(<0.0026 ) After Treatment Sample

LHWAPSD-BED1W-LEAD 2/20/2009 ND(<0.0026 ) ND(<0.0026 ) After Treatment Sample

LHWAPSD-BED2W-LAG 2/20/2009 ND(<0.0026 ) ND(<0.0026 ) After Treatment Sample

LHWAPSD-ATCONTACTTANK 2/20/2009 ND(<0.0026 ) ND(<0.0026 ) GAC System Samples

LHWAPSD-PT 3/6/2009 6.7 6.4 Prior Carbon Treatment

LHWAPSD-BED1E-LEAD 3/6/2009 0.07 0.067 After Treatment Sample

LHWAPSD-BED2E-LAG 3/6/2009 ND(<0.0026 ) ND(<0.0026 ) After Treatment Sample

LHWAPSD-BED1W-LEAD 3/6/2009 NQ (<0.013) NQ (<0.013) After Treatment Sample

LHWAPSD-BED2W-LAG 3/6/2009 ND(<0.0026 ) ND(<0.0026 ) After Treatment Sample

LHWAPSD-PT 3/20/2009 6.2 6 Prior to Treatment Sample

LHWAPSD-BED2E-LEAD 3/20/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-BED1E-LAG 3/20/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-BED2W-LEAD 3/20/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-BED1W-LAG 3/20/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-ATCONTACTTANK 3/20/2009 ND(<0.0026 ) ND(<0.0026 ) GAC System Samples

LHWAPSD-PT 4/3/2009 5.1 4.9 Prior to Treatment Sample

LHWAPSD-BED2E-LEAD 4/3/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-BED1E-LAG 4/3/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-BED2W-LEAD 4/3/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-BED1W-LAG 4/3/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-PT 4/17/2009 4.6 4.4 Prior to Treatment Sample

LHWAPSD-BED2E-LEAD 4/17/2009 0.028 0.027 After Carbon Treatment Sample

LHWAPSD-BED1E-LAG 4/17/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-BED2W-LEAD 4/17/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-BED1W-LAG 4/17/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-ATCONTACTTANK 4/17/2009 ND(<0.0026 ) ND(<0.0026 ) GAC System Samples

LHWAPSD-PT 5/1/2009 4.9 4.7 Prior to Treatment Sample

LHWAPSD-BED2E-LEAD 5/1/2009 0.17 0.16 After Carbon Treatment Sample

LHWAPSD-BED1E-LAG 5/1/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-BED2W-LEAD 5/1/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-BED1W-LAG 5/1/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-PT 5/15/2009 4.3 4.1 Prior to Treatment Sample

LHWAPSD-BED1E-LEAD 5/15/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-BED2E-LAG 5/15/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-BED1W-LEAD 5/15/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-BED2W-LAG 5/15/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-ATCONTACTTANK 5/15/2009 ND(<0.0026 ) ND(<0.0026 ) GAC System Samples

2/3/10 Page 17 of 41 Table 4.1
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Active Sampling Locations

Little Hocking, OH LHWAPSD-PT 5/29/2009 6.6 6.3 Prior to Treatment Sample

cont. LHWAPSD-BED1E-LEAD 5/29/2009 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

LHWAPSD-BED2E-LAG 5/29/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-BED1W-LEAD 5/29/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-BED2W-LAG 5/29/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-PT 6/12/2009 6 5.8 Prior to Treatment Sample

LHWAPSD-BED1E-LEAD 6/12/2009 0.12 0.12 After Carbon Treatment Sample

LHWAPSD-BED2E-LAG 6/12/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-BED1W-LEAD 6/12/2009 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

LHWAPSD-BED2W-LAG 6/12/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-ATCONTACTTANK 6/12/2009 ND(<0.0026 ) ND(<0.0026 ) GAC System Samples

LHWAPSD-PT 6/26/2009 6.7 6.4 Prior to Treatment Sample

LHWAPSD-BED1E-LEAD 6/26/2009 0.31 0.3 After Carbon Treatment Sample

LHWAPSD-BED2E-LAG 6/26/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-BED1W-LEAD 6/26/2009 0.098 0.094 After Carbon Treatment Sample

LHWAPSD-BED2W-LAG 6/26/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-PT 7/9/2009 6.7 6.4 Prior to Treatment Sample

LHWAPSD-BED2E-LEAD 7/9/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-BED1E-LAG 7/9/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-BED2W-LEAD 7/9/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-BED1W-LAG 7/9/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-AT-CONTACT 

TANK 7/9/2009 ND(<0.0026 ) ND(<0.0026 ) GAC System Samples

LHWAPSD-PT 7/23/2009 6.2 6 Prior to Treatment Sample

LHWAPSD-BED2E-LEAD 7/23/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-BED1E-LAG 7/23/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-BED2W-LEAD 7/23/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-BED1W-LAG 7/23/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-PT 8/7/2009 7.6 7.3 Prior to Treatment Sample

LHWAPSD-BED2E-LEAD 8/7/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-BED1E-LAG 8/7/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-BED2W-LEAD 8/7/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-BED1W-LAG 8/7/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-AT-CONTACT 

TANK 8/7/2009 ND(<0.0026 ) ND(<0.0026 ) GAC System Samples

LHWAPSD-PT 8/21/2009 8.4 8.1 Prior to Treatment Sample

LHWAPSD-BED2E-LEAD 8/21/2009 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

LHWAPSD-BED1E-LAG 8/21/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-BED2W-LEAD 8/21/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-BED1W-LAG 8/21/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-PT 9/4/2009 7.1 6.8 Prior to Treatment Sample

LHWAPSD-BED2E-LEAD 9/4/2009 0.024 0.023 After Carbon Treatment Sample

LHWAPSD-BED1E-LAG 9/4/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-BED2W-LEAD 9/4/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-BED1W-LAG 9/4/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-AT-CONTACT 

TANK 9/4/2009 ND(<0.0026 ) ND(<0.0026 ) GAC System Samples

LHWAPSD-PT 9/18/2009 8.5 8.2 Prior to Treatment Sample

LHWAPSD-BED2E-LEAD 9/18/2009 0.016 0.015 After Carbon Treatment Sample

LHWAPSD-BED1E-LAG 9/18/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-BED2W-LEAD 9/18/2009 0.05 0.048 After Carbon Treatment Sample

LHWAPSD-BED1W-LAG 9/18/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LHWAPSD-PT 10/2/2009 5.8 5.6 Prior to Treatment Sample

LHWAPSD-BED1E-LEAD 10/2/2009 ND(<0.0033 ) ND(<0.0033 ) After Carbon Treatment Sample

LHWAPSD-BED2E-LAG 10/2/2009 ND(<0.0033 ) ND(<0.0033 ) After Carbon Treatment Sample

LHWAPSD-BED1W-LEAD 10/2/2009 ND(<0.0033 ) ND(<0.0033 ) After Carbon Treatment Sample

LHWAPSD-BED2W-LAG 10/2/2009 ND(<0.0033 ) ND(<0.0033 ) After Carbon Treatment Sample

LHWAPSD-AT-CONTACT 

TANK 10/2/2009 ND(<0.0033 ) ND(<0.0033 ) GAC System Samples

2/3/10 Page 18 of 41 Table 4.1
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Active Sampling Locations

Little Hocking, OH LHWAPSD-PT 10/16/2009 6.9 6.6 Prior to Treatment Sample

cont. LHWAPSD-BED1E-LEAD 10/16/2009 ND(<0.0021 ) ND(<0.0021 ) After Carbon Treatment Sample

LHWAPSD-BED2E-LAG 10/16/2009 ND(<0.0021 ) ND(<0.0021 ) After Carbon Treatment Sample

LHWAPSD-BED1W-LEAD 10/16/2009 ND(<0.0021 ) ND(<0.0021 ) After Carbon Treatment Sample

LHWAPSD-BED2W-LAG 10/16/2009 ND(<0.0021 ) ND(<0.0021 ) After Carbon Treatment Sample

LHWAPSD-PT 10/30/2009 7.2 6.9 Prior to Treatment Sample

LHWAPSD-BED1E-LEAD 10/30/2009 NQ (<0.016) NQ (<0.016) After Carbon Treatment Sample

LHWAPSD-BED2E-LAG 10/30/2009 ND(<0.0033 ) ND(<0.0033 ) After Carbon Treatment Sample

LHWAPSD-BED1W-LEAD 10/30/2009 NQ (<0.016) NQ (<0.016) After Carbon Treatment Sample

LHWAPSD-BED2W-LAG 10/30/2009 ND(<0.0033 ) ND(<0.0033 ) After Carbon Treatment Sample

LHWAPSD-AT-CONTACT 

TANK 10/30/2009 ND(<0.0033 ) ND(<0.0033 ) GAC System Samples

LHWAPSD-PT 11/13/2009 7.6 7.3 Prior to Treatment Sample

LHWAPSD-BED1E-LEAD 11/13/2009 0.16 0.15 After Carbon Treatment Sample

LHWAPSD-BED2E-LAG 11/13/2009 ND(<0.0033 ) ND(<0.0033 ) After Carbon Treatment Sample

LHWAPSD-BED1W-LEAD 11/13/2009 0.038 0.036 After Carbon Treatment Sample

LHWAPSD-BED2W-LAG 11/13/2009 ND(<0.0033 ) ND(<0.0033 ) After Carbon Treatment Sample

LHWAPSD-PT 11/30/2009 7.2 6.9 Prior to Treatment Sample

LHWAPSD-BED1E-LEAD 11/30/2009 0.33 0.32 After Carbon Treatment Sample

LHWAPSD-BED2E-LAG 11/30/2009 ND(<0.0033 ) ND(<0.0033 ) After Carbon Treatment Sample

LHWAPSD-BED1W-LEAD 11/30/2009 0.074 0.071 After Carbon Treatment Sample

LHWAPSD-BED2W-LAG 11/30/2009 ND(<0.0033 ) ND(<0.0033 ) After Carbon Treatment Sample

LHWAPSD-AT-CONTACT 

TANK 11/30/2009 ND(<0.0033 ) ND(<0.0033 ) GAC System Samples

WWO-D-LHWAPSD-PT 12/11/2009 7 6.7 Prior to Treatment Sample

LHWAPSD-BED2E-LEAD 12/11/2009 ND(<0.0021 ) ND(<0.0021 ) After Carbon Treatment Sample

LHWAPSD-BED1E-LAG 12/11/2009 ND(<0.0021 ) ND(<0.0021 ) After Carbon Treatment Sample

LHWAPSD-BED2W-LEAD 12/11/2009 ND(<0.0021 ) ND(<0.0021 ) After Carbon Treatment Sample

LHWAPSD-BED1W-LAG 12/11/2009 ND(<0.0021 ) ND(<0.0021 ) After Carbon Treatment Sample

DuPont Washington Works, AM07-PW01 12/20/1991 0.4 0.4 Production Well (Drinking Water)

WV & AM07-PW01 4/2/1996 0.48 Production Well (Drinking Water)

AM07-PW01 6/2/1997 0.79 Production Well (Drinking Water)

AM07-PW01 6/19/1998 0.4 Production Well (Drinking Water)

AM07-PW01 11/18/1998 1.9 L Production Well (Drinking Water)

AM07-PW01 2/3/1999 0.082 B Production Well (Drinking Water)

AM07-PW01 5/12/1999 0.578 Production Well (Drinking Water)

AM07-PW01 8/16/2000 0.071 J Production Well (Drinking Water)

AM07-PW01 11/20/2000 0.24 Production Well (Drinking Water)

AM07-PW01 1/22/2002 0.131 Production Well (Drinking Water)

AM07-PW01 2/14/2002 0.129 Production Well (Drinking Water)

AM07-PW01 3/21/2002 0.171 Production Well (Drinking Water)

AM07-PW01 4/16/2002 0.159 Production Well (Drinking Water)

AM07-PW01 5/17/2002 0.247 Production Well (Drinking Water)

AM07-PW01 8/26/2002 0.335 Production Well (Drinking Water)

AM07-PW01 10/22/2002 0.269 Production Well (Drinking Water)

AM07-PW01 3/8/2003 NQ (< 0.05) Production Well (Drinking Water)

AM07-PW01 5/22/2003 0.377 Production Well (Drinking Water)

AM07-PW01 8/11/2003 1.16 Production Well (Drinking Water)

AM07-PW01 11/11/2003 0.511 Production Well (Drinking Water)

AM07-PW01 2/17/2004 1.04 Production Well (Drinking Water)

AM07-PW01 5/11/2004 1.27 Production Well (Drinking Water)

AM07-PW01 9/26/2004 9.06 Production Well (Drinking Water)

AM07-PW01 12/7/2004 2.61 2.51 Production Well (Drinking Water)

AM07-PW01 3/21/2005 1.31 1.26 Production Well (Drinking Water)

AM07-PW01 6/24/2005 0.967 0.929 Production Well (Drinking Water)

AM07-PW01 9/29/2005 1 0.962 Production Well (Drinking Water)

AM07-PW01 12/19/2005 0.559 0.537 Production Well (Drinking Water)

AM07-PW01 3/7/2006 0.637 0.612 Production Well (Drinking Water)

AM07-PW01 6/6/2006 0.538 0.517 Production Well (Drinking Water)

AO08-PW01 4/2/1996 0.52 Production Well (Drinking Water)

2/3/10 Page 19 of 41 Table 4.1
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Active Sampling Locations

DuPont Washington Works, AO08-PW01 6/2/1997 0.55 Production Well (Drinking Water)

WV & cont. AO08-PW01 6/19/1998 1 Production Well (Drinking Water)

AO08-PW01 5/12/1999 0.307 Production Well (Drinking Water)

AO08-PW01 8/15/2000 0.167 Production Well (Drinking Water)

AO08-PW01 11/20/2000 0.4 Production Well (Drinking Water)

AO08-PW01 11/20/00 (dup) 0.26 Production Well (Drinking Water)

AO08-PW01 1/22/2002 0.355 Production Well (Drinking Water)

AO08-PW01 2/14/2002 0.439 Production Well (Drinking Water)

AO08-PW01 3/21/2002 0.568 Production Well (Drinking Water)

AO08-PW01 4/16/2002 0.497 Production Well (Drinking Water)

AO08-PW01 5/17/2002 0.499 Production Well (Drinking Water)

AO08-PW01 8/26/2002 0.42 Production Well (Drinking Water)

AO08-PW01 10/22/2002 0.415 Production Well (Drinking Water)

AO08-PW01 3/8/2003 0.308 Production Well (Drinking Water)

AO08-PW01 5/22/2003 0.736 Production Well (Drinking Water)

AO08-PW01 8/11/2003 0.802 Production Well (Drinking Water)

AO08-PW01 11/11/2003 0.384 Production Well (Drinking Water)

AO08-PW01 2/17/2004 0.928 Production Well (Drinking Water)

AO08-PW01 5/11/2004 1.01 Production Well (Drinking Water)

AO08-PW01 9/26/2004 4.99 Production Well (Drinking Water)

AO08-PW01 12/7/2004 2.12 2.04 Production Well (Drinking Water)

AO08-PW01 3/21/2005 1.29 1.24 Production Well (Drinking Water)

AO08-PW01 6/24/2005 1.09 1.05 Production Well (Drinking Water)

AO08-PW01 9/29/2005 1.25 1.2 Production Well (Drinking Water)

AO08-PW01 12/19/2005 0.86 0.826 Production Well (Drinking Water)

AO08-PW01 3/7/2006 1.47 1.41 Production Well (Drinking Water)

AO08-PW01 6/6/2006 0.969 0.931 Production Well (Drinking Water)

WWK-Z-GAC-PT 5/22/2007 0.5 0.48 Prior to GAC Treatment Sample

WWK-Z-GAC-IT 5/22/2007 NQ (<0.013) NQ (<0.013) Intermediate GAC Treatment Sample

WWK-Z-GAC-AT 5/22/2007 ND (<0.0027) ND (<0.0027) After GAC Treatment Sample

WWK-Z-GAC-PT 6/13/2007 0.51 0.49 Prior to GAC Treatment Sample

WWK-Z-GAC-IT 6/13/2007 0.15 0.14 Intermediate GAC Treatment Sample

WWK-Z-GAC-AT 6/13/2007 ND (<0.0027) ND (<0.0027) After GAC Treatment Sample

WWK-Z-GAC-PT 7/24/2007 0.62 0.6 Prior to GAC Treatment Sample

WWK-Z-GAC-IT 7/24/2007 0.24 0.23 Intermediate GAC Treatment Sample

WWK-Z-GAC-AT 7/24/2007 ND (<0.0012) ND (<0.0012) After GAC Treatment Sample

WWK-Z-GAC-PT 8/21/2007 0.57 0.55 Prior to GAC Treatment Sample

WWK-Z-GAC-IT 8/21/2007 0.23 0.22 Intermediate GAC Treatment Sample

WWK-Z-GAC-AT 8/21/2007 NQ (<0.0062) NQ (<0.0062) After GAC Treatment Sample

WWK-Z-GAC-PT 9/11/2007 0.8 0.77 Prior to GAC Treatment Sample

WWK-Z-GAC-IT 9/11/2007 0.42 0.4 Intermediate GAC Treatment Sample

WWK-Z-GAC-AT 9/11/2007 0.021 0.02 After GAC Treatment Sample

WWK-Z-GAC-PT 10/30/2007 0.29 0.28 Prior to GAC Treatment Sample

WWK-Z-GAC-IT 10/30/2007 0.091 0.087 Intermediate GAC Treatment Sample

WWK-Z-GAC-AT 10/30/2007 NQ (<0.016) NQ (<0.016) After GAC Treatment Sample

WWK-Z-GAC-PT 11/13/2007 0.36 0.35 Prior to GAC Treatment Sample

WWK-Z-GAC-IT 11/13/2007 0.095 0.091 Intermediate GAC Treatment Sample

WWK-Z-GAC-AT 11/13/2007 NQ (<0.016) NQ (<0.016) After GAC Treatment Sample

WWK-Z-GAC-PT 12/18/2007 0.35 0.34 Prior to GAC Treatment Sample

WWK-Z-GAC-IT 12/18/2007 0.1 0.1 Intermediate GAC Treatment Sample

WWK-Z-GAC-AT 12/18/2007 NQ (<0.016) NQ (<0.016) After GAC Treatment Sample

WWK-Z-GAC-PT 1/8/2008 0.42 0.4 Prior to GAC Treatment Sample

WWK-Z-GAC-IT 1/8/2008 0.071 0.068 Intermediate GAC Treatment Sample

WWK-Z-GAC-AT 1/8/2008 ND (<0.0022) ND (<0.0022) After GAC Treatment Sample

WWK-Z-GAC-PT 2/5/2008 0.51 0.49 Prior to GAC Treatment Sample

WWK-Z-GAC-IT 2/5/2008 0.12 0.12 Intermediate GAC Treatment Sample

WWK-Z-GAC-AT 2/5/2008 ND (<0.0022) ND (<0.0022) After GAC Treatment Sample

WWK-Z-GAC-PT 3/4/2008 0.46 0.44 Prior to GAC Treatment Sample

WWK-Z-GAC-IT 3/4/2008 0.15 0.14 Intermediate GAC Treatment Sample

WWK-Z-GAC-AT 3/4/2008 NQ (<0.011) NQ (<0.011) After GAC Treatment Sample

2/3/10 Page 20 of 41 Table 4.1
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Active Sampling Locations

DuPont Washington Works, WWK-Z-GAC-PT 4/1/2008 0.35 0.34 Prior to GAC Treatment Sample

WV & cont. WWK-Z-GAC-IT 4/1/2008 0.12 0.12 Intermediate GAC Treatment Sample

WWK-Z-GAC-AT 4/1/2008 NQ (<0.0096) NQ (<0.0096) After GAC Treatment Sample

WWK-Z-GAC-PT 5/6/2008 0.36 0.35 Prior to GAC Treatment Sample

WWK-Z-GAC-IT 5/6/2008 0.18 0.17 Intermediate GAC Treatment Sample

WWK-Z-GAC-AT 5/6/2008 0.04 0.038 After GAC Treatment Sample

WWK-Z-GAC-PT 6/24/2008 0.49 0.47 Prior to GAC Treatment Sample

WWK-Z-GAC-IT 6/24/2008 0.18 0.17 Intermediate GAC Treatment Sample

WWK-Z-GAC-AT 6/24/2008 NQ (<0.012) NQ (<0.012) After GAC Treatment Sample

WWK-Z-GAC-PT 7/16/2008 0.54 0.52 Prior to GAC Treatment Sample

WWK-Z-GAC-IT 7/16/2008 0.28 0.27 Intermediate GAC Treatment Sample

WWK-Z-GAC-AT 7/16/2008 0.023 0.023 After GAC Treatment Sample

WWK-Z-GAC-PT 8/13/2008 0.57 0.55 Prior to GAC Treatment Sample

WWK-Z-GAC-IT 8/13/2008 0.28 0.27 Intermediate GAC Treatment Sample

WWK-Z-GAC-AT 8/13/2008 0.041 0.039 After GAC Treatment Sample

WWK-Z-GAC-PT 9/23/2008 0.56 0.54 Prior to GAC Treatment Sample

WWK-Z-GAC-IT 9/23/2008 0.14 0.13 Intermediate GAC Treatment Sample

WWK-Z-GAC-AT 9/23/2008 ND (<0.0023) ND (<0.0023) After GAC Treatment Sample

WWK-Z-PT 10/24/2008 0.57 0.55 Prior to GAC Treatment Sample

WWK-Z-PV1-LAG 10/24/2008 NQ (<0.0085) NQ (<0.0085) After GAC Treatment Sample

WWK-Z-PV2-LEAD 10/24/2008 0.17 0.16 Intermediate GAC Treatment Sample

WWK-Z-PT 11/14/2008 0.53 0.51 Prior to GAC Treatment Sample

WWK-Z-PV1-LAG 11/14/2008 0.01 0.01 After GAC Treatment Sample

WWK-Z-PV2-LEAD 11/14/2008 0.18 0.17 Intermediate GAC Treatment Sample

WWK-Z-PT 12/30/2008 0.2 0.19 Prior to GAC Treatment Sample

WWK-Z-PV1-LEAD 12/30/2008 0.037 0.036 Intermediate GAC Treatment Sample

WWK-Z-PV2-LAG 12/30/2008 <0.0026 <0.0026 After GAC Treatment Sample

WWK-Z-PT 1/21/2009 0.55 0.53 Prior to GAC Treatment Sample

WWK-Z-PV1-LEAD 1/21/2009 0.14 0.13 Intermediate GAC Treatment Sample

WWK-Z-PV2-LAG 1/21/2009 NQ (<0.013) NQ (<0.013) After GAC Treatment Sample

WWK-Z-PT 2/28/2009 0.4 0.38 Prior to GAC Treatment Sample

WWK-Z-PV1-LAG 2/28/2009 <0.0026 <0.0026 After GAC Treatment Sample

WWK-Z-PV2-LEAD 2/28/2009 0.044 0.042 Intermediate GAC Treatment Sample

WWK-Z-PT 3/25/2009 0.45 0.43 Prior to GAC Treatment Sample

WWK-Z-PV2-LEAD 3/25/2009 0.097 0.094 Intermediate GAC Treatment Sample

WWK-Z-PV1-LAG 3/25/2009 NQ (<0.013) NQ (<0.013) After GAC Treatment Sample

WWK-Z-PT 4/23/2009 0.3 0.29 Prior to GAC Treatment Sample

WWK-Z-PV2-LEAD 4/23/2009 0.11 0.11 Intermediate GAC Treatment Sample

WWK-Z-PV1-LAG 4/23/2009 NQ (<0.013) NQ (<0.013) After GAC Treatment Sample

WWK-Z-PT 5/14/2009 0.42 0.4 Prior to GAC Treatment Sample

WWK-Z-PV1-LEAD 5/14/2009 0.075 0.072 Intermediate GAC Treatment Sample

WWK-Z-PV2-LAG 5/14/2009 <0.0026 <0.0026 After GAC Treatment Sample

WWK-Z-PT 6/23/2009 0.54 0.52 Prior to GAC Treatment Sample

WWK-Z-PV1-LEAD 6/23/2009 0.18 0.17 Intermediate GAC Treatment Sample

WWK-Z-PV2-LAG 6/23/2009 NQ NQ After GAC Treatment Sample

WWK-Z-PT 7/24/2009 0.6 0.58 Prior to GAC Treatment Sample

WWK-Z-PV1-LAG 7/24/2009 <0.0026 <0.0026 Intermediate GAC Treatment Sample

WWK-Z-PV2-LEAD 7/24/2009 0.074 0.071 After GAC Treatment Sample

WWK-Z-PT 8/19/2009 0.62 0.6 Prior to GAC Treatment Sample

WWK-Z-PV1-LAG 8/19/2009 NQ NQ Intermediate GAC Treatment Sample

WWK-Z-PV2-LEAD 8/19/2009 0.18 0.17 After GAC Treatment Sample

WWK-Z-PT 9/17/2009 0.68 0.65 Prior to GAC Treatment Sample

WWK-Z-PV1-LEAD 9/17/2009 0.031 0.03 Intermediate GAC Treatment Sample

WWK-Z-PV2-LAG 9/17/2009 <0.0026 <0.0026 After GAC Treatment Sample

WWK-Z-PT 10/27/2009 0.74 0.71 Prior to GAC Treatment Sample

WWK-Z-PV1-LEAD 10/27/2009 0.099 0.095 Intermediate GAC Treatment Sample

WWK-Z-PV2-LAG 10/27/2009 <0.0033 <0.0033 After to GAC Treatment Sample

WWK-Z-PT 11/19/2009 0.8 0.77 Prior to GAC Treatment Sample

WWK-Z-PV1-LEAD 11/19/2009 0.15 0.14 Intermediate GAC Treatment Sample

WWK-Z-PV2-LAG 11/19/2009 <0.0033 <0.0033 After to GAC Treatment Sample

2/3/10 Page 21 of 41 Table 4.1
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Active Sampling Locations

DuPont Washington Works, WWK-Z-PT 12/14/2009 0.62 0.6 Prior to GAC Treatment Sample

WV & cont. WWK-Z-PV1-LEAD 12/14/2009 0.17 0.16 Intermediate GAC Treatment Sample

WWK-Z-PV2-LAG 12/14/2009 <0.0021 <0.0021 After to GAC Treatment Sample

Lubeck, WV LPSDAT 3/28/2002 0.690 After Treatment Sample

LPSDAT 4/26/2002 0.652 After Treatment Sample

LPSDAT 7/24/2002 0.600 After Treatment Sample

LPSDAT 10/15/2002 0.653 After Treatment Sample

LPSDAT 2/25/2003 0.565 After Treatment Sample

LPSDAT 5/27/2003 0.539 After Treatment Sample

LPSDAT 8/28/2003 0.425 After Treatment Sample

LPSDAT 12/17/2003 0.444 After Treatment Sample

LPSDAT 2/24/2004 0.487 After Treatment Sample

LPSDAT 5/28/2004 0.521 After Treatment Sample

LPSDAT 10/1/2004 0.821 After Treatment Sample

LPSDAT 10/1/2004 (dup) 0.783 duplicate

LPSDAT 11/29/2004 1.150 1.100 After Treatment Sample

LPSDAT 11/29/04 (dup) 1.020 0.983 duplicate

LPSDAT 1/21/2005 0.623 0.598 After Treatment Sample

LPSDAT 1/21/05 (dup) 0.618 0.594 After Treatment Sample

LPSDAT 5/18/2005 0.650 0.624 After Treatment Sample

LPSDAT 7/12/2005 0.523 0.502 After Treatment Sample

LPSDAT 7/12/2005 (dup) 0.484 0.465 duplicate

LPSDAT 10/17/2005 0.733 0.704 After Treatment Sample

LPSDAT 2/10/2006 0.466 0.448 After Treatment Sample

LPSDAT 5/4/2006 0.803 0.771 After Treatment Sample

LPSDAT 8/22/2006 0.500 0.480 After Treatment Sample

LPSDAT 7/20/2007 ND (<0.0012) ND (<0.0012) After Treatment Sample

LPSD WELL A 1/3/2002 0.764 Production Well

LPSD WELL A 2/21/2002 0.683 Production Well

LPSD WELL A 3/28/2002 0.796 Production Well

LPSD WELL A 4/26/2002 0.938 Production Well

LPSD WELL A 7/24/2002 0.753 Production Well

LPSD WELL A 10/15/2002 0.856 Production Well

LPSD WELL A 2/25/2003 0.777 Production Well

LPSD WELL A 5/27/2003 0.746 Production Well

LPSD WELL A 8/28/2003 0.470 Production Well

LPSD WELL A 12/17/2003 0.466 Production Well

LPSD WELL A 2/24/2004 0.397 Production Well

LPSD WELL A 2/24/2004 0.473 Production Well

LPSD WELL A 5/28/2004 0.450 Production Well

LPSD WELL A 5/28/2004 0.453 duplicate

LPSD WELL A 10/1/2004 0.848 Production Well

LPSD WELL A 11/29/2004 1.190 1.140 Production Well

LPSD WELL A 1/21/2005 0.613 0.589 Production Well

LPSD WELL A 5/18/2005 0.749 0.719 Production Well

LPSD WELL A 7/12/2005 0.578 0.555 Production Well

LPSD WELL A 10/17/2005 0.871 0.837 Production Well

LPSD WELL A 2/10/2006 0.583 0.560 Production Well

LPSD WELL A 5/4/2006 0.890 0.855 Production Well

LPSD WELL A 7/18/2007 0.210 0.200 Production Well

LPSD WELL A 9/22/2008 0.230 0.220 Production Well

LPSD WELL A 10/28/2009 0.34 0.33 Production Well

LPSD WELL B 2/21/2002 0.610 Production Well

LPSD WELL B 3/28/2002 0.551 Production Well

LPSD WELL B 4/26/2002 0.532 Production Well

LPSD WELL B 7/24/2002 0.443 Production Well

LPSD WELL B 10/15/2002 0.537 Production Well

LPSD WELL B 2/25/2003 0.480 Production Well

LPSD WELL B 5/27/2003 0.488 Production Well

LPSD WELL B 8/28/2003 0.398 Production Well

2/3/10 Page 22 of 41 Table 4.1
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Active Sampling Locations

Lubeck, WV LPSD WELL B 12/17/2003 0.440 Production Well

cont. LPSD WELL B 12/17/2003 (dup) 0.451 duplicate

LPSD WELL B 2/24/2004 0.528 Production Well

LPSD WELL B 5/28/2004 0.597 Production Well

LPSD WELL B 10/1/2004 1.070 Production Well

LPSD WELL B 11/29/2004 1.020 0.981 Production Well

LPSD WELL B 1/21/2005 0.590 0.567 Production Well

LPSD WELL B 5/18/2005 0.822 0.790 Production Well

LPSD WELL B 7/12/2005 0.660 0.634 Production Well

LPSD WELL B 10/17/2005 0.917 0.880 Production Well

LPSD WELL B 2/10/2006 0.605 0.581 Production Well

LPSD WELL B 2/10/06 (dup) 0.602 0.578 duplicate

LPSD WELL B 5/4/2006 0.938 0.901 Production Well

LPSD WELL B 7/18/2007 0.570 0.550 Production Well

LPSD WELL B 9/22/2008 0.860 0.830 Production Well

LPSD WELL B 10/28/2009 0.97 0.93 Production Well

LPSD WELL C 1/3/2002 0.592 Production Well

LPSD WELL C 2/21/2002 0.479 Production Well

LPSD WELL C 3/28/2002 0.491 Production Well

LPSD WELL C 4/26/2002 0.471 Production Well

LPSD WELL C 7/24/2002 0.398 Production Well

LPSD WELL C 10/15/2002 0.504 Production Well

LPSD WELL C 2/25/2003 0.429 Production Well

LPSD WELL C 5/27/2003 0.428 Production Well

LPSD WELL C 8/28/2003 0.291 Production Well

LPSD WELL C 12/17/2003 0.259 Production Well

LPSD WELL C 2/24/2004 0.27 Production Well

LPSD WELL C 5/28/2004 0.279 Production Well

LPSD WELL C 10/1/2004 0.683 Production Well

LPSD WELL C 11/29/2004 0.677 0.650 Production Well

LPSD WELL C 1/21/2005 0.324 0.311 Production Well

LPSD WELL C 5/18/2005 0.560 0.538 Production Well

LPSD WELL C 7/12/2005 0.454 0.436 Production Well

LPSD WELL C 10/17/2005 0.676 0.649 Production Well

LPSD WELL C 2/10/2006 0.410 0.394 Production Well

LPSD WELL C 5/4/2006 0.726 0.697 Production Well

LPSD WELL C 7/18/2007 0.450 0.430 Production Well

LPSD WELL C 9/22/2008 0.340 0.330 Production Well

LPSD WELL C 10/28/2009 0.55 0.53 Production Well

LPSD WELL D 1/3/2002 0.758 Production Well

LPSD WELL D 2/21/2002 0.725 Production Well

LPSD WELL D 3/28/2002 0.692 Production Well

LPSD WELL D 4/26/2002 0.506 Production Well

LPSD WELL D 7/24/2002 0.444 Production Well

LPSD WELL D 10/15/2002 0.517 Production Well

LPSD WELL D 2/25/2003 0.397 Production Well

LPSD WELL D 5/27/2003 0.401 Production Well

LPSD WELL D 8/28/2003 0.303 Production Well

LPSD WELL D 12/17/2003 0.249 Production Well

LPSD WELL D 2/24/2004 0.303 Production Well

LPSD WELL D 5/28/2004 0.242 Production Well

LPSD WELL D 10/1/2004 0.500 Production Well

LPSD WELL D 11/29/2004 0.314 0.301 Production Well

LPSD WELL D 1/21/2005 0.186 0.179 Production Well

LPSD WELL D 5/18/2005 0.297 0.285 Production Well

LPSD WELL D 7/12/2005 0.227 0.218 Production Well

LPSD WELL D 10/17/2005 0.262 0.252 Production Well

LPSD WELL D 10/17/05 (dup) 0.251 0.241 duplicate

LPSD WELL D 2/10/2006 0.193 0.186 Production Well

LPSD WELL D 5/4/2006 0.262 0.252 Production Well

2/3/10 Page 23 of 41 Table 4.1
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Active Sampling Locations

Lubeck, WV LPSD WELL D 7/18/2007 0.090 0.086 Production Well

cont. LPSD WELL D 9/22/2008 0.090 0.086 Production Well

LPSD WELL D 10/28/2009 0.17 0.16 Production Well

LPSD WELL E 1/3/2002 0.332 Production Well

LPSD WELL E 2/21/2002 1.000 Production Well

LPSD WELL E 3/28/2002 1.090 Production Well

LPSD WELL E 4/26/2002 1.110 Production Well

LPSD WELL E 7/24/2002 1.020 Production Well

LPSD WELL E 10/15/2002 1.210 Production Well

LPSD WELL E 2/25/2003 1.090 Production Well

LPSD WELL E 5/27/2003 1.050 Production Well

LPSD WELL E 8/28/2003 0.608 Production Well

LPSD WELL E 12/17/2003 0.618 Production Well

LPSD WELL E 2/24/2004 0.637 Production Well

LPSD WELL E 5/28/2004 0.716 Production Well

LPSD WELL E 10/1/2004 2.090 Production Well

LPSD WELL E 11/29/2004 2.010 1.930 Production Well

LPSD WELL E 1/21/2005 0.549 0.528 Production Well

LPSD WELL E 5/18/2005 0.747 0.718 Production Well

LPSD WELL E 5/18/2005 (dup) 0.758 0.728 duplicate

LPSD WELL E 7/12/2005 0.562 0.540 Production Well

LPSD WELL E 10/17/2005 Pump Broken Pump Broken Production Well

LPSD WELL E 2/10/2006 0.413 0.397 Production Well

LPSD WELL E 5/4/2006 0.765 0.735 Production Well

LPSD WELL E 5/4/2006 (dup) 0.790 0.759 duplicate

LPSD WELL E 7/18/2007 0.360 0.350 Production Well

LPSD WELL E 9/22/2008 0.340 0.330 Production Well

LPSD WELL E 10/28/2009 0.36 0.35 Production Well

LPSD WELL F 1/3/2002 1.040 Production Well

LPSD WELL F 2/21/2002 0.313 Production Well

LPSD WELL F 3/28/2002 0.358 Production Well

LPSD WELL F 3/28/2002 (dup) 0.352 duplicate

LPSD WELL F 4/26/2002 0.332 Production Well

LPSD WELL F 7/24/2002 0.284 Production Well

LPSD WELL F 7/24/2002 (dup) 0.283 duplicate

LPSD WELL F 10/15/2002 0.355 Production Well

LPSD WELL F 2/25/2003 Flooded Production Well

LPSD WELL F 5/27/2003 0.319 Production Well

LPSD WELL F 8/28/2003 0.190 Production Well

LPSD WELL F 12/17/2003 No access Production Well

LPSD WELL F 2/24/2004 0.531 Production Well

LPSD WELL F 5/28/2004 0.528 Production Well

LPSD WELL F 10/1/2004 0.389 Production Well

LPSD WELL F 11/29/2004 0.351 0.337 Production Well

LPSD WELL F 1/21/2005 0.603 0.579 Production Well

LPSD WELL F 5/18/2005 0.740 0.711 Production Well

LPSD WELL F 7/12/2005 0.634 0.609 Production Well

LPSD WELL F 10/17/2005 0.887 0.852 Production Well

LPSD WELL F 2/10/2006 Pump Broken Pump Broken Production Well

LPSD WELL F 5/4/2006 1.090 1.050 Production Well

LPSD WELL F 7/18/2007 0.770 0.740 Production Well

LPSD WELL F 7/18/2007 (dup) 0.770 0.740 Production Well

LPSD WELL F 9/22/2008 0.740 0.710 Production Well

LPSD WELL F 9/22/08 (dup) 0.700 0.670 Production Well

LPSD WELL F 10/28/2009 0.79 0.76 Production Well

LPSD WELL F 10/28/2009 (dup) 0.93 0.89 Production Well

LPSD WELL G 7/18/2007 0.970 0.930 Production Well

LPSD WELL G 9/22/2008 1.000 1.000 Production Well

LPSD WELL G 10/28/2009 1.1 1.1 Production Well

LPSD BACKWASH 12/12/2006 0.460 0.440 NPDES Discharge Monitoring

2/3/10 Page 24 of 41 Table 4.1
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Active Sampling Locations

Lubeck, WV LPSD BACKWASH 2/16/2007 0.550 0.530 NPDES Discharge Monitoring

cont. LPSD BACKWASH NORTH 5/24/2007 NQ (<0.013) NQ (<0.013) NPDES Discharge Monitoring

LPSD BACKWASH SOUTH 5/24/2007 NQ (<0.013) NQ (<0.013) NPDES Discharge Monitoring

LPSD BACKWASH 8/24/2007 0.091 0.088 NPDES Discharge Monitoring

LPSD BACKWASH 10/31/2007 0.018 0.017 NPDES Discharge Monitoring

LPSD BACKWASH 2/8/2008 0.077 0.074 NPDES Discharge Monitoring

LPSD BACKWASH 5/21/2008 0.040 0.038 NPDES Discharge Monitoring

LPSD BACKWASH 9/12/2008 0.170 0.160 NPDES Discharge Monitoring

LPSD BACKWASH 12/1/2008 0.170 0.160 NPDES Discharge Monitoring

LPSD BACKWASH 2/24/2009 0.140 0.130 NPDES Discharge Monitoring

LPSD BACKWASH 6/3/2009 0.15 0.14 NPDES Discharge Monitoring

LPSD BACKWASH 9/15/2009 ND(<0.0026 ) ND(<0.0026 ) NPDES Discharge Monitoring

LPSD BACKWASH 12/8/2009 0.11 0.11 NPDES Discharge Monitoring

LPSD PT 6/7/2007 0.610 0.590 Prior to Carbon Treatment Sample

LPSD BED 1N-LEAD 6/7/2007 0.290 0.280 After Carbon Treatment Sample

LPSD BED 2N-LAG 6/7/2007 ND (<0.0027) ND (<0.0027) After Carbon Treatment Sample

LPSD BED 1S-LAG 6/7/2007 0.041 0.039 After Carbon Treatment Sample

LPSD-BED2S-LEAD 6/7/2007 ND (<0.0027) ND (<0.0027) After Carbon Treatment Sample

LPSD PT 6/22/2007 0.580 0.560 Prior to Carbon Treatment Sample

LPSD-BED1N-LEAD 6/22/2007 0.470 0.450 After Carbon Treatment Sample

LPSD-BED1S-LEAD 6/22/2007 NQ (<0.0062) NQ (<0.0062) After Carbon Treatment Sample

LPSD-BED2N-LAG 6/22/2007 NQ (<0.0062) NQ (<0.0062) After Carbon Treatment Sample

LPSD-BED2S-LAG 6/22/2007 0.450 0.430 After Carbon Treatment Sample

LPSD PT 7/16/2007 0.570 0.550 Prior to Carbon Treatment Sample

LPSD-BED1N-LEAD 7/16/2007 0.012 0.012 After Carbon Treatment Sample

LPSD-BED1S-LEAD 7/16/2007 0.030 0.029 After Carbon Treatment Sample

LPSD-BED2N-LAG 7/16/2007 ND (<0.0012) ND (<0.0012) After Carbon Treatment Sample

LPSD-BED2S-LAG 7/16/2007 ND (<0.0012) ND (<0.0012) After Carbon Treatment Sample

LPSD PT 8/13/2007 0.460 0.440 Prior to Carbon Treatment Sample

LPSD-BED1N-LEAD 8/13/2007 0.0097 0.0093 After Carbon Treatment Sample

LPSD-BED1S-LEAD 8/13/2007 0.023 0.022 After Carbon Treatment Sample

LPSD-BED2N-LAG 8/13/2007 ND (<0.0012) ND (<0.0012) After Carbon Treatment Sample

LPSD-BED2S-LAG 8/13/2007 ND (<0.0012) ND (<0.0012) After Carbon Treatment Sample

LPSD PT 9/11/2007 0.5500 0.5300 Prior to Carbon Treatment Sample

LPSD-BED1N-LEAD 9/11/2007 0.0950 0.0910 After Carbon Treatment Sample

LPSD-BED1S-LEAD 9/11/2007 0.1100 0.1100 After Carbon Treatment Sample

LPSD-BED2N-LAG 9/11/2007 ND (<0.0012) ND (<0.0012) After Carbon Treatment Sample

LPSD-BED2S-LAG 9/11/2007 NQ (<0.0062) NQ (<0.0062) After Carbon Treatment Sample

LPSD PT 10/1/2007 0.5300 0.5100 Prior to Carbon Treatment Sample

LPSD-BED1N-LEAD 10/1/2007 0.1200 0.1200 After Carbon Treatment Sample

LPSD-BED1S-LEAD 10/1/2007 0.1100 0.1100 After Carbon Treatment Sample

LPSD-BED2N-LAG 10/1/2007 ND (<0.0031) ND (<0.0031) After Carbon Treatment Sample

LPSD-BED2S-LAG 10/1/2007 NQ (<0.016) NQ (<0.016) After Carbon Treatment Sample

LPSD-PT 10/31/2007 0.5000 0.4800 After Carbon Treatment Sample

LPSD-BED-2N-LAG 10/31/2007 NQ (<0.016) NQ (<0.016) After Carbon Treatment Sample

LPSD-BED-2S-LAG 10/31/2007 0.0280 0.0270 After Carbon Treatment Sample

LPSD PT 11/14/2007 0.4300 0.4100 Prior to Carbon Treatment Sample

LPSD-BED2N-LEAD 11/14/2007 0.0270 0.0260 After Carbon Treatment Sample

LPSD-BED2S-LEAD 11/14/2007 0.0560 0.0540 After Carbon Treatment Sample

LPSD-BED1N-LAG 11/14/2007 ND (<0.0031) ND (<0.0031) After Carbon Treatment Sample

LPSD-BED1S-LAG 11/14/2007 ND (<0.0031) ND (<0.0031) After Carbon Treatment Sample

LPSD PT 12/5/2007 0.5400 0.5200 Prior to Carbon Treatment Sample

LPSD-BED2N-LEAD 12/5/2007 0.0650 0.0620 After Carbon Treatment Sample

LPSD-BED2S-LEAD 12/5/2007 0.0990 0.0950 After Carbon Treatment Sample

LPSD-BED1N-LAG 12/5/2007 ND (<0.0031) ND (<0.0031) After Carbon Treatment Sample

LPSD-BED1S-LAG 12/5/2007 ND (<0.0031) ND (<0.0031) After Carbon Treatment Sample

LPSD PT 1/18/2008 0.4500 0.4300 Prior to Carbon Treatment Sample

LPSD-BED2N-LEAD 1/18/2008 0.0250 0.0240 After Carbon Treatment Sample

LPSD-BED2S-LEAD 1/18/2008 0.1200 0.1200 After Carbon Treatment Sample

LPSD-BED1N-LAG 1/18/2008 ND (<0.0022) ND (<0.0022) After Carbon Treatment Sample

2/3/10 Page 25 of 41 Table 4.1
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Active Sampling Locations

Lubeck, WV LPSD-BED1S-LAG 1/18/2008 NQ (<0.011) NQ (<0.011) After Carbon Treatment Sample

cont. LPSD-SAMPLESTATION9 2/8/2008 0.0180 0.0170 After Carbon Treatment Sample

LPSD PT 2/14/2008 0.4500 0.4300 Prior to Carbon Treatment Sample

LPSD-BED1N-LEAD 2/14/2008 0.0210 0.0200 After Carbon Treatment Sample

LPSD-BED1S-LEAD 2/14/2008 0.0240 0.0230 After Carbon Treatment Sample

LPSD-BED2N-LAG 2/14/2008 ND (<0.0022) ND (<0.0022) After Carbon Treatment Sample

LPSD-BED2S-LAG 2/14/2008 ND (<0.0022) ND (<0.0022) After Carbon Treatment Sample

LPSD PT 3/17/2008 0.3300 0.3200 Prior to Carbon Treatment Sample

LPSD-BED1N-LEAD 3/17/2008 0.1100 0.1100 After Carbon Treatment Sample

LPSD-BED1S-LEAD 3/17/2008 0.0800 0.0770 After Carbon Treatment Sample

LPSD-BED2N-LAG 3/17/2008 ND (<0.0022) ND (<0.0022) After Carbon Treatment Sample

LPSD-BED2S-LAG 3/17/2008 ND (<0.0022) ND (<0.0022) After Carbon Treatment Sample

LPSD PT 4/18/2008 0.4400 0.4200 Prior to Carbon Treatment Sample

LPSD-BED1N-LEAD 4/18/2008 0.1500 0.1400 After Carbon Treatment Sample

LPSD-BED1S-LEAD 4/18/2008 0.1300 0.1200 After Carbon Treatment Sample

LPSD-BED2N-LAG 4/18/2008 0.0620 0.0600 After Carbon Treatment Sample

LPSD-BED2S-LAG 4/18/2008 NQ (<0.0096) NQ (<0.0096) After Carbon Treatment Sample

LPSD PT 5/27/2008 0.5400 0.5200 Prior to Carbon Treatment Sample

LPSD-BED1N-LAG 5/27/2008 ND (<0.0019) ND (<0.0019) After Carbon Treatment Sample

LPSD-BED1S-LAG 5/27/2008 ND (<0.0019) ND (<0.0019) After Carbon Treatment Sample

LPSD-BED2N-LEAD 5/27/2008 0.1700 0.1600 After Carbon Treatment Sample

LPSD-BED2S-LEAD 5/27/2008 0.1600 0.1500 After Carbon Treatment Sample

LPSD PT 6/13/2008 0.5100 0.4900 Prior to Carbon Treatment Sample

LPSD-BED1N-LAG 6/13/2008 ND (<0.0019) ND (<0.0019) After Carbon Treatment Sample

LPSD-BED1S-LAG 6/13/2008 ND (<0.0019) ND (<0.0019) After Carbon Treatment Sample

LPSD-BED2N-LEAD 6/13/2008 0.1700 0.1600 After Carbon Treatment Sample

LPSD-BED2S-LEAD 6/13/2008 0.1700 0.1600 After Carbon Treatment Sample

LPSD PT 7/14/2008 0.4300 0.4100 Prior to Carbon Treatment Sample

LPSD-BED1N-LAG 7/14/2008 ND (<0.0023) ND (<0.0023) After Carbon Treatment Sample

LPSD-BED1S-LAG 7/14/2008 ND (<0.0023) ND (<0.0023) After Carbon Treatment Sample

LPSD-BED2N-LEAD 7/14/2008 0.0600 0.0580 After Carbon Treatment Sample

LPSD-BED2S-LEAD 7/14/2008 0.1900 0.1800 After Carbon Treatment Sample

LPSD PT 8/12/2008 0.5900 0.5700 Prior to Carbon Treatment Sample

LPSD-BED1N-LAG 8/12/2008 NQ (<0.012) NQ (<0.012) After Carbon Treatment Sample

LPSD-BED1S-LAG 8/12/2008 NQ (<0.012) NQ (<0.012) After Carbon Treatment Sample

LPSD-BED2N-LEAD 8/12/2008 0.2200 0.2100 After Carbon Treatment Sample

LPSD-BED2S-LEAD 8/12/2008 0.1800 0.1700 After Carbon Treatment Sample

LPSD PT 9/15/2008 0.5100 0.4900 Prior to Carbon Treatment Sample

LPSD-BED1N-LEAD 9/15/2008 0.0700 0.0670 After Carbon Treatment Sample

LPSD-BED1S-LEAD 9/15/2008 0.1000 0.1000 After Carbon Treatment Sample

LPSD-BED2N-LAG 9/15/2008 ND (<0.0023) ND (<0.0023) After Carbon Treatment Sample

LPSD-BED2S-LAG 9/15/2008 ND (<0.0023) ND (<0.0023) After Carbon Treatment Sample

LPSD PT 10/20/2008 0.4100 0.3900 Prior to Carbon Treatment Sample

LPSD-BED1N-LEAD 10/20/2008 0.0300 0.0290 After Carbon Treatment Sample

LPSD-BED1S-LEAD 10/20/2008 0.0580 0.0560 After Carbon Treatment Sample

LPSD-BED2N-LAG 10/20/2008 ND (<0.0017) ND (<0.0017) After Carbon Treatment Sample

LPSD-BED2S-LAG 10/20/2008 ND (<0.0017) ND (<0.0017) After Carbon Treatment Sample

LPSD PT 11/21/2008 0.4600 0.4400 Prior to Carbon Treatment Sample

LPSD-BED1N-LEAD 11/21/2008 0.1700 0.1600 After Carbon Treatment Sample

LPSD-BED1S-LEAD 11/21/2008 0.1900 0.1800 After Carbon Treatment Sample

LPSD-BED2N-LAG 11/21/2008 NQ (<0.0085) NQ (<0.0085) After Carbon Treatment Sample

LPSD-BED2S-LAG 11/21/2008 0.0094 0.0090 After Carbon Treatment Sample

LPSD PT 12/16/2008 0.5100 0.4900 Prior to Carbon Treatment Sample

LPSD-BED1N-LAG 12/16/2008 ND (<0.0017) ND (<0.0017) After Carbon Treatment Sample

LPSD-BED1S-LAG 12/16/2008 ND (<0.0017) ND (<0.0017) After Carbon Treatment Sample

LPSD-BED2N-LEAD 12/16/2008 0.0320 0.0310 After Carbon Treatment Sample

LPSD-BED2S-LEAD 12/16/2008 0.0790 0.0760 After Carbon Treatment Sample

LPSD PT 1/21/2009 0.6400 0.6100 Prior to Carbon Treatment Sample

LPSD-BED1N-LAG 1/21/2009 ND (<0.0026) ND (<0.0026) After Carbon Treatment Sample

LPSD-BED1S-LAG 1/21/2009 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

2/3/10 Page 26 of 41 Table 4.1
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Active Sampling Locations

Lubeck, WV LPSD-BED2N-LEAD 1/21/2009 0.1000 0.0960 After Carbon Treatment Sample

cont. LPSD-BED2S-LEAD 1/21/2009 0.1700 0.1600 After Carbon Treatment Sample

LPSD PT 2/24/2009 0.6000 0.5800 Prior to Carbon Treatment Sample

LPSD-BED1N-LEAD 2/24/2009 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

LPSD-BED1S-LEAD 2/24/2009 0.0500 0.0480 After Carbon Treatment Sample

LPSD-BED2N-LAG 2/24/2009 0.1800 0.1700 After Carbon Treatment Sample

LPSD-BED2S-LAG 2/24/2009 ND (<0.0026) ND (<0.0026) After Carbon Treatment Sample

LPSD-PT 3/16/2009 0.61 0.59 Prior to Treatment Sample

LPSD-BED1N-LEAD 3/16/2009 0.016 0.015 After Carbon Treatment Sample

LPSD-BED2N-LAG 3/16/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LPSD-BED1S-LEAD 3/16/2009 0.074 0.071 After Carbon Treatment Sample

LPSD-BED2S-LAG 3/16/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LPSD-PT 4/20/2009 0.67 0.64 Prior to Treatment Sample

LPSD-BED1N-LEAD 4/20/2009 0.083 0.08 After Carbon Treatment Sample

LPSD-BED2N-LAG 4/20/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LPSD-BED1S-LEAD 4/20/2009 0.18 0.17 After Carbon Treatment Sample

LPSD-BED2S-LAG 4/20/2009 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

LPSD-PT 5/26/2009 0.59 0.57 Prior to Treatment Sample

LPSD-BED2N-LEAD 5/26/2009 0.026 0.025 After Carbon Treatment Sample

LPSD-BED1N-LAG 5/26/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LPSD-BED2S-LEAD 5/26/2009 0.1 0.1 After Carbon Treatment Sample

LPSD-BED1S-LAG 5/26/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LPSD-PT 6/23/2009 0.46 0.44 Prior to Treatment Sample

LPSD-BED2N-LEAD 6/23/2009 0.059 0.057 After Carbon Treatment Sample

LPSD-BED1N-LAG 6/23/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LPSD-BED2S-LEAD 6/23/2009 0.19 0.18 After Carbon Treatment Sample

LPSD-BED1S-LAG 6/23/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LPSD-PT 7/21/2009 0.62 0.6 Prior to Treatment Sample

LPSD-BED2N-LEAD 7/21/2009 0.14 0.13 After Carbon Treatment Sample

LPSD-BED1N-LAG 7/21/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LPSD-BED2S-LEAD 7/21/2009 0.32 0.31 After Carbon Treatment Sample

LPSD-BED1S-LAG 7/21/2009 0.014 0.013 After Carbon Treatment Sample

LPSD-PT 8/19/2009 0.25 0.24 Prior to Treatment Sample

LPSD-BED1N-LEAD 8/19/2009 0.017 0.016 After Carbon Treatment Sample

LPSD-BED2N-LAG 8/19/2009 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

LPSD-BED1S-LEAD 8/19/2009 0.08 0.077 After Carbon Treatment Sample

LPSD-BED2S-LAG 8/19/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LPSD-PT 9/15/2009 0.72 0.69 Prior to Treatment Sample

LPSD-BED2N-LEAD 9/15/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LPSD-BED1N-LAG 9/15/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LPSD-BED2S-LEAD 9/15/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LPSD-BED1S-LAG 9/15/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LPSD-PT 10/28/2009 0.51 0.49 Prior to Treatment Sample

LPSD-BED2N-LEAD 10/28/2009 NQ (<0.016) NQ (<0.016) After Carbon Treatment Sample

LPSD-BED1N-LAG 10/28/2009 ND(<0.0033 ) ND(<0.0033 ) After Carbon Treatment Sample

LPSD-BED2S-LEAD 10/28/2009 0.059 0.057 After Carbon Treatment Sample

LPSD-BED1S-LAG 10/28/2009 ND(<0.0033 ) ND(<0.0033 ) After Carbon Treatment Sample

LPSD-PT 11/19/2009 0.68 0.65 Prior to Treatment Sample

LPSD-BED2N-LEAD 11/19/2009 0.066 0.063 After Carbon Treatment Sample

LPSD-BED1N-LAG 11/19/2009 ND(<0.0033 ) ND(<0.0033 ) After Carbon Treatment Sample

LPSD-BED2S-LEAD 11/19/2009 0.096 0.092 After Carbon Treatment Sample

LPSD-BED1S-LAG 11/19/2009 ND(<0.0033 ) ND(<0.0033 ) After Carbon Treatment Sample

Tuppers Plains PSD, OH TPPSDPT 2/6/2002 0.372 Before Treatment Sample

TPPSDPT 3/25/2002 0.347 Before Treatment Sample

TPPSDPT 7/23/2002 0.240 Before Treatment Sample

TPPSDPT 10/15/2002 0.226 Before Treatment Sample

TPPSDPT 2/25/2003 0.285 Before Treatment Sample

TPPSDPT 5/27/2003 0.288 Before Treatment Sample

TPPSDPT 8/28/2003 0.180 Before Treatment Sample

TPPSDPT 12/29/2004 0.113 0.109 Before Treatment Sample

2/3/10 Page 27 of 41 Table 4.1
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Active Sampling Locations

Tuppers Plains PSD, OH TPPSDAT 2/6/2002 0.361 After Treatment Sample

cont. TPPSDAT 3/25/2002 0.358 After Treatment Sample

TPPSDAT 4/24/2002 0.363 After Treatment Sample

TPPSDAT 7/23/2002 0.246 After Treatment Sample

TPPSDAT 10/15/2002 0.268 After Treatment Sample

TPPSDAT 2/25/2003 0.291 After Treatment Sample

TPPSDAT 5/27/2003 0.287 After Treatment Sample

TPPSDAT 8/28/2003 0.183 After Treatment Sample

TPPSDAT 9/16/2004 0.201 After Treatment Sample

TPPSDAT 9/16/2004 (dup) 0.229 duplicate

TPPSDAT 7/14/2005 0.116 0.111 After Treatment Sample

TPPSDAT 7/14/2005 (dup) 0.099 0.095 duplicate

TPPSDPW1 2/6/2002 0.726 Production Well

TPPSDPW1 3/25/2002 0.705 Production Well

TPPSDPW1 4/24/2002 0.702 Production Well

TPPSDPW1 7/23/2002 0.588 Production Well

TPPSDPW1 10/15/2002 0.486 Production Well

TPPSDPW1 2/25/2003 0.532 Production Well

TPPSDPW1 5/27/2003 0.541 Production Well

TPPSDPW1 5/27/2003 (dup) 0.520 duplicate

TPPSDPW1 8/28/2003 0.364 Production Well

TPPSDPW1 9/16/2004 0.373 Production Well

TPPSDPW1 7/14/2005 0.186 0.179 Production Well

TPPSDPW1 9/18/2006 0.160 0.150 Production Well

TPPSDPW1 9/10/2007 0.094 0.090 Production Well

TPPSDPW1 10/29/2009 0.068 0.065 Production Well

TPPSDPW2 2/6/2002 0.417 Production Well

TPPSDPW2 3/25/2002 0.327 Production Well

TPPSDPW2 4/24/2002 0.371 Production Well

TPPSDPW2 7/23/2002 0.235 Production Well

TPPSDPW2 10/15/2002 0.255 Production Well

TPPSDPW2 2/25/2003 0.356 Production Well

TPPSDPW2 5/27/2003 0.350 Production Well

TPPSDPW2 8/28/2003 0.211 Production Well

TPPSDPW2 9/16/2004 0.287 Production Well

TPPSDPW2 7/14/2005 0.116 0.111 Production Well

TPPSDPW2 9/18/2006 0.180 0.170 Production Well

TPPSDPW2 9/10/2007 0.094 0.090 Production Well

TPPSDPW2 9/23/2008 0.061 0.059 Production Well

TPPSDPW2 10/29/2009 0.07 0.067 Production Well

TPPSDPW3 2/6/2002 NQ (<0.050) Production Well

TPPSDPW3 3/25/2002 NQ (<0.050) Production Well

TPPSDPW3 7/23/2002 ND (<0.050) Production Well

TPPSDPW3 10/15/2002 ND (<0.050) Production Well

TPPSDPW3 2/25/2003 NQ (<0.050) Production Well

TPPSDPW3 5/27/2003 ND (<0.050) Production Well

TPPSDPW3 8/28/2003 ND (<0.050) Production Well

TPPSDPW3 9/16/2004 ND (<0.010) Production Well

TPPSDPW3 7/14/2005 NQ (<0.007) NQ(<0.007) Production Well

TPPSDPW3 9/18/2006 0.023 0.022 Production Well

TPPSDPW3 9/10/2007 NQ (<0.0062) NQ (<0.0062) Production Well

TPPSDPW3 9/23/2008 0.060 0.058 Production Well

TPPSDPW3 10/29/2009 ND(<0.0033 ) ND(<0.0033 ) Production Well

TPPSDPW4 2/6/2002 0.073 Production Well

TPPSDPW4 3/25/2002 0.070 Production Well

TPPSDPW4 7/23/2002 0.052 Production Well

TPPSDPW4 10/15/2002 0.076 Production Well

TPPSDPW4 2/25/2003 NQ (<0.050) Production Well

TPPSDPW4 5/27/2003 0.078 Production Well

TPPSDPW4 8/28/2004 NQ (<0.050) Production Well

2/3/10 Page 28 of 41 Table 4.1
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Active Sampling Locations

Tuppers Plains PSD, OH TPPSDPW4 9/16/2004 NQ (<0.050) Production Well

cont. TPPSDPW4 7/14/2005 0.092 0.088 Production Well

TPPSDPW4 9/18/2006 0.079 0.076 Production Well

TPPSDPW4 9/10/2007 0.036 0.035 Production Well

TPPSDPW4 9/23/2008 0.016 0.015 Production Well

TPPSDPW4 10/29/2009 0.025 0.024 Production Well

TPPSDPW5 2/6/2002 0.201 Production Well

TPPSDPW5 3/25/2002 0.201 Production Well

TPPSDPW5 7/23/2002 0.216 Production Well

TPPSDPW5 10/15/2002 0.229 Production Well

TPPSDPW5 2/25/2003 0.297 Production Well

TPPSDPW5 5/27/2003 Not Pumping** Production Well

TPPSDPW5 8/28/2003 0.205 Production Well

TPPSDPW5 9/16/2004 0.277 Production Well

TPPSDPW5 7/14/2005 0.132 0.127 Production Well

TPPSDPW5 9/18/2006 0.150 0.140 Production Well

TPPSDPW5 9/10/2007 0.096 0.092 Production Well

TPPSDPW5 9/23/2008 0.075 0.072 Production Well

TPPSDPW5 10/29/2009 0.072 0.069 Production Well

TPPSDPW6 2/6/2002 0.649 Production Well

TPPSDPW6 3/25/2002 0.634 Production Well

TPPSDPW6 4/24/2002 0.620 Production Well

TPPSDPW6 7/23/2002 0.620 Production Well

TPPSDPW6 10/15/2002 0.433 Production Well

TPPSDPW6 2/25/2003 0.542 Production Well

TPPSDPW6 5/27/2003 0.542 Production Well

TPPSDPW6 8/28/2003 0.364 Production Well

TPPSDPW6 8/28/2003 (dup) 0.345 duplicate

TPPSDPW6 9/16/2004 0.343 Production Well

TPPSDPW6 7/14/2005 0.167 0.160 Production Well

TPPSDPW6 9/18/2006 0.140 0.130 Production Well

TPPSDPW6 9/18/06 (dup) 0.150 0.140 duplicate

TPPSDPW6 9/10/2007 0.086 0.083 Production Well

TPPSDPW6 9/10/07 (dup) 0.090 0.086 duplicate

TPPSDPW6 9/23/2008 0.068 0.065 Production Well

TPPSDPW6 9/23/08 (dup) 0.067 0.064 duplicate

TPPSDPW6 10/29/2009 0.067 0.064 Production Well

TPPSDPW6 10/29/2009 (dup) 0.064 0.061 duplicate

TPPSDPT 5/9/2006 0.111 0.107 Before Treatment Sample

TPPSD-BED1N-LEAD 5/9/2006 ND (<0.0012) ND (<0.0012) After Carbon Treatment Sample

TPPSD-BED2N-LAG 5/9/2006 ND (<0.0012) ND (<0.0012) After Carbon Treatment Sample

TPPSD-BED1S-LEAD 5/9/2006 ND (<0.0012) ND (<0.0012) After Carbon Treatment Sample

TPPSD-BED2S-LAG 5/9/2006 ND (<0.0012) ND (<0.0012) After Carbon Treatment Sample

TPPSDPT 6/15/2006 0.090 0.087 Before Treatment Sample

TPPSD-BED1N-LEAD 6/15/2006 NQ (<0.006) NQ (<0.006) After Carbon Treatment Sample

TPPSD-BED2N-LAG 6/15/2006 ND (<0.0012) ND (<0.0012) After Carbon Treatment Sample

TPPSD-BED1S-LEAD 6/15/2006 ND (<0.0012) ND (<0.0012) After Carbon Treatment Sample

TPPSD-BED2S-LAG 6/15/2006 ND (<0.0012) ND (<0.0012) After Carbon Treatment Sample

TPPSDPT 7/27/2006 0.0884 0.0849 Before Treatment Sample

TPPSD-BED1N-LEAD 7/27/2006 ND (<0.0026) ND (<0.0026) After Carbon Treatment Sample

TPPSD-BED2N-LAG 7/27/2006 ND (<0.0026) ND (<0.0026) After Carbon Treatment Sample

TPPSD-BED1S-LEAD 7/27/2006 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

TPPSD-BED2S-LAG 7/27/2006 ND (<0.0026) ND (<0.0026) After Carbon Treatment Sample

TPPSDPT 8/17/2006 0.098 0.094 Before Treatment Sample

TPPSD-BED1N-LEAD 8/17/2006 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

TPPSD-BED2N-LAG 8/17/2006 ND (<0.0026) ND (<0.0026) After Carbon Treatment Sample

TPPSD-BED1S-LEAD 8/17/2006 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

TPPSD-BED2S-LAG 8/17/2006 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

TPPSDPT 9/18/2006 0.099 0.095 Before Treatment Sample

TPPSD-BED1N-LEAD 9/18/2006 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

2/3/10 Page 29 of 41 Table 4.1
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Active Sampling Locations

Tuppers Plains PSD, OH TPPSD-BED2N-LAG 9/18/2006 ND (<0.0026) ND (<0.0026) After Carbon Treatment Sample

cont. TPPSD-BED1S-LEAD 9/18/2006 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

TPPSD-BED2S-LAG 9/18/2006 ND (<0.0026) ND (<0.0026) After Carbon Treatment Sample

TPPSDPT 10/12/2006 0.098 0.094 Before Treatment Sample

TPPSD-BED1N-LEAD 10/12/2006 0.018 0.017 After Carbon Treatment Sample

TPPSD-BED2N-LAG 10/12/2006 ND (<0.0018) ND (<0.0018) After Carbon Treatment Sample

TPPSD-BED1S-LEAD 10/12/2006 0.024 0.023 After Carbon Treatment Sample

TPPSD-BED2S-LAG 10/12/2006 ND (<0.0018) ND (<0.0018) After Carbon Treatment Sample

TPPSD-BED1N-LEAD 11/14/2006 0.017 0.016 After Carbon Treatment Sample

TPPSD-BED2N-LAG 11/14/2006 ND (<0.0018) ND (<0.0018) After Carbon Treatment Sample

TPPSD-BED1S-LEAD 11/14/2006 0.020 0.019 After Carbon Treatment Sample

TPPSD-BED2S-LAG 11/14/2006 ND (<0.0018) ND (<0.0018) After Carbon Treatment Sample

TPPSDPT 11/27/2006 0.073 0.070 Before Treatment Sample

TPPSD-BED1N-LAG 11/27/2006 ND (<0.0018) ND (<0.0018) After Carbon Treatment Sample

TPPSD-BED1S-LAG 11/27/2006 ND (<0.0018) ND (<0.0018) After Carbon Treatment Sample

TPPSD-BED2N-LEAD 11/27/2006 NQ (<0.0090) NQ (<0.0090) After Carbon Treatment Sample

TPPSD-BED2S-LEAD 11/27/2006 NQ (<0.0090) NQ (<0.0090) After Carbon Treatment Sample

TPPSDPT 12/14/2006 0.067 0.064 Before Treatment Sample

TPPSD-BED1N-LAG 12/14/2006 ND (<0.0018) ND (<0.0018) After Carbon Treatment Sample

TPPSD-BED1S-LAG 12/14/2006 ND (<0.0018) ND (<0.0018) After Carbon Treatment Sample

TPPSD-BED2N-LEAD 12/14/2006 NQ (<0.0090) NQ (<0.0090) After Carbon Treatment Sample

TPPSD-BED2S-LEAD 12/14/2006 NQ (<0.0090) NQ (<0.0090) After Carbon Treatment Sample

TPPSDPT 1/17/2007 0.091 0.087 Before Treatment Sample

TPPSD-BED1N-LAG 1/17/2007 ND (<0.0010) ND (<0.0010) After Carbon Treatment Sample

TPPSD-BED1S-LAG 1/17/2007 ND (<0.0010) ND (<0.0010) After Carbon Treatment Sample

TPPSD-BED2N-LEAD 1/17/2007 0.035 0.034 After Carbon Treatment Sample

TPPSD-BED2S-LEAD 1/17/2007 0.020 0.019 After Carbon Treatment Sample

TPPSDPT 2/15/2007 0.077 0.074 Before Treatment Sample

TPPSD-BED1N-LAG 2/15/2007 ND (<0.0010) ND (<0.0010) After Carbon Treatment Sample

TPPSD-BED1S-LAG 2/15/2007 ND (<0.0010) ND (<0.0010) After Carbon Treatment Sample

TPPSD-BED2N-LEAD 2/15/2007 0.032 0.031 After Carbon Treatment Sample

TPPSD-BED2S-LEAD 2/15/2007 0.016 0.015 After Carbon Treatment Sample

TPPSDPT 3/27/2007 0.083 0.080 Before Treatment Sample

TPPSD-BED1N-LAG 3/27/2007 ND (<0.0010) ND (<0.0010) After Carbon Treatment Sample

TPPSD-BED1S-LAG 3/27/2007 ND (<0.0010) ND (<0.0010) After Carbon Treatment Sample

TPPSD-BED2N-LEAD 3/27/2007 0.049 0.047 After Carbon Treatment Sample

TPPSD-BED2S-LEAD 3/27/2007 0.034 0.033 After Carbon Treatment Sample

TPPSDPT 4/19/2007 0.080 0.077 Before Treatment Sample

TPPSD-BED1N-LAG 4/19/2007 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

TPPSD-BED1S-LAG 4/19/2007 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

TPPSD-BED2N-LEAD 4/19/2007 0.049 0.047 After Carbon Treatment Sample

TPPSD-BED2S-LEAD 4/19/2007 0.041 0.039 After Carbon Treatment Sample

TPPSDPT 5/21/2007 0.077 0.074 Before Treatment Sample

TPPSD-BED1N-LEAD 5/21/2007 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

TPPSD-BED1S-LEAD 5/21/2007 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

TPPSD-BED2N-LAG 5/21/2007 ND (<0.0027) ND (<0.0027) After Carbon Treatment Sample

TPPSD-BED2S-LAG 5/21/2007 ND (<0.0027) ND (<0.0027) After Carbon Treatment Sample

TPPSDPT 6/21/2007 0.082 0.079 Before Treatment Sample

TPPSD-BED1N-LEAD 6/21/2007 0.020 0.019 After Carbon Treatment Sample

TPPSD-BED1S-LEAD 6/21/2007 0.016 0.015 After Carbon Treatment Sample

TPPSD-BED2N-LAG 6/21/2007 ND (<0.0019) ND (<0.0019) After Carbon Treatment Sample

TPPSD-BED2S-LAG 6/21/2007 ND (<0.0019) ND (<0.0019) After Carbon Treatment Sample

TPPSDPT 7/19/2007 0.073 0.070 Before Treatment Sample

TPPSD-BED1N-LEAD 7/19/2007 0.027 0.026 After Carbon Treatment Sample

TPPSD-BED1S-LEAD 7/19/2007 0.023 0.022 After Carbon Treatment Sample

TPPSD-BED2N-LAG 7/19/2007 ND (<0.0012) ND (<0.0012) After Carbon Treatment Sample

TPPSD-BED2S-LAG 7/19/2007 ND (<0.0012) ND (<0.0012) After Carbon Treatment Sample

TPPSDPT 8/15/2007 0.062 0.059 Before Treatment Sample

TPPSD-BED1N-LEAD 8/15/2007 0.033 0.032 After Carbon Treatment Sample

TPPSD-BED1S-LEAD 8/15/2007 0.030 0.029 After Carbon Treatment Sample

2/3/10 Page 30 of 41 Table 4.1
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Active Sampling Locations

Tuppers Plains PSD, OH TPPSD-BED2N-LAG 8/15/2007 ND (<0.0012) ND (<0.0012) After Carbon Treatment Sample

cont. TPPSD-BED2S-LAG 8/15/2007 ND (<0.0012) ND (<0.0012) After Carbon Treatment Sample

TPPSDPT 9/10/2007 0.072 0.069 Before Treatment Sample

TPPSD-BED1N-LEAD 9/10/2007 0.039 0.038 After Carbon Treatment Sample

TPPSD-BED1S-LEAD 9/10/2007 0.043 0.041 After Carbon Treatment Sample

TPPSD-BED2N-LAG 9/10/2007 NQ (<0.0062) NQ (<0.0062) After Carbon Treatment Sample

TPPSD-BED2S-LAG 9/10/2007 NQ (<0.0062) NQ (<0.0062) After Carbon Treatment Sample

TPPSDPT 10/1/2007 0.073 0.070 Before Treatment Sample

TPPSD-BED1N-LEAD 10/1/2007 0.040 0.038 After Carbon Treatment Sample

TPPSD-BED1S-LEAD 10/1/2007 0.041 0.039 After Carbon Treatment Sample

TPPSD-BED2N-LAG 10/1/2007 NQ (<0.016) NQ (<0.016) After Carbon Treatment Sample

TPPSD-BED2S-LAG 10/1/2007 NQ (<0.016) NQ (<0.016) After Carbon Treatment Sample

TPPSDPT 11/13/2007 0.067 0.064 Before Treatment Sample

TPPSD-BED2N-LEAD 11/13/2007 0.019 0.018 After Carbon Treatment Sample

TPPSD-BED2S-LEAD 11/13/2007 0.017 0.016 After Carbon Treatment Sample

TPPSD-BED1N-LAG 11/13/2007 ND (<0.0031) ND (<0.0031) After Carbon Treatment Sample

TPPSD-BED1S-LAG 11/13/2007 ND (<0.0031) ND (<0.0031) After Carbon Treatment Sample

TPPSDPT-N 12/18/2007 0.077 0.074 Before Treatment Sample

TPPSD-BED2N-LEAD 12/18/2007 0.032 0.031 After Carbon Treatment Sample

TPPSD-BED2S-LEAD 12/18/2007 0.033 0.032 After Carbon Treatment Sample

TPPSD-BED1N-LAG 12/18/2007 ND (<0.0031) ND (<0.0031) After Carbon Treatment Sample

TPPSD-BED1S-LAG 12/18/2007 ND (<0.0031) ND (<0.0031) After Carbon Treatment Sample

TPPSDPT-N 1/15/2008 0.071 0.068 Before Treatment Sample

TPPSD-BED2N-LEAD 1/15/2008 0.032 0.031 After Carbon Treatment Sample

TPPSD-BED2S-LEAD 1/15/2008 0.036 0.035 After Carbon Treatment Sample

TPPSD-BED1N-LAG 1/15/2008 ND (<0.0022) ND (<0.0022) After Carbon Treatment Sample

TPPSD-BED1S-LAG 1/15/2008 ND (<0.0022) ND (<0.0022) After Carbon Treatment Sample

TPPSDPT-N 2/13/2008 0.072 0.069 Before Treatment Sample

TPPSD-BED2N-LEAD 2/13/2008 0.032 0.031 After Carbon Treatment Sample

TPPSD-BED2S-LEAD 2/13/2008 0.034 0.033 After Carbon Treatment Sample

TPPSD-BED1N-LAG 2/13/2008 ND (<0.0022) ND (<0.0022) After Carbon Treatment Sample

TPPSD-BED1S-LAG 2/13/2008 ND (<0.0022) ND (<0.0022) After Carbon Treatment Sample

TPPSDPT-N 3/12/2008 0.087 0.084 Before Treatment Sample

TPPSD-BED2N-LEAD 3/12/2008 0.046 0.044 After Carbon Treatment Sample

TPPSD-BED2S-LEAD 3/12/2008 0.042 0.040 After Carbon Treatment Sample

TPPSD-BED1N-LAG 3/12/2008 NQ (<0.011) NQ (<0.011) After Carbon Treatment Sample

TPPSD-BED1S-LAG 3/12/2008 NQ (<0.011) NQ (<0.011) After Carbon Treatment Sample

TPPSDPT-N 4/10/2008 0.056 0.054 Before Treatment Sample

TPPSD-BED1N-LEAD 4/10/2008 NQ (<0.0096) NQ (<0.0096) After Carbon Treatment Sample

TPPSD-BED1S-LEAD 4/10/2008 NQ (<0.0096) NQ (<0.0096) After Carbon Treatment Sample

TPPSD-BED2N-LAG 4/10/2008 ND (<0.0019) ND (<0.0019) After Carbon Treatment Sample

TPPSD-BED2S-LAG 4/10/2008 ND (<0.0019) ND (<0.0019) After Carbon Treatment Sample

TPPSDPT-N 5/28/2008 0.053 0.051 Before Treatment Sample

TPPSD-BED1N-LEAD 5/28/2008 0.019 0.018 After Carbon Treatment Sample

TPPSD-BED1S-LEAD @ 5/28/2008 ND(<0.0019 ) ND(<0.0019 ) After Carbon Treatment Sample

TPPSD-BED2N-LAG 5/28/2008 ND (<0.0019) ND (<0.0019) After Carbon Treatment Sample

TPPSD-BED2S-LAG @ 5/28/2008 0.017 0.016 After Carbon Treatment Sample

TPPSDPT-N 6/13/2008 0.052 0.05 Before Treatment Sample

TPPSD-BED1N-LEAD 6/13/2008 0.019 0.018 After Carbon Treatment Sample

TPPSD-BED1S-LEAD 6/13/2008 0.016 0.015 After Carbon Treatment Sample

TPPSD-BED2N-LAG 6/13/2008 ND (<0.0019) ND (<0.0019) After Carbon Treatment Sample

TPPSD-BED2S-LAG 6/13/2008 ND (<0.0019) ND (<0.0019) After Carbon Treatment Sample

TPPSDPT-N 7/14/2008 0.048 0.046 Before Treatment Sample

TPPSD-BED1N-LEAD 7/14/2008 0.023 0.022 After Carbon Treatment Sample

TPPSD-BED1S-LEAD 7/14/2008 0.021 0.02 After Carbon Treatment Sample

TPPSD-BED2N-LAG 7/14/2008 ND (<0.0023) ND (<0.0023) After Carbon Treatment Sample

TPPSD-BED2S-LAG 7/14/2008 ND (<0.0023) ND (<0.0023) After Carbon Treatment Sample

TPPSDPT-N 8/11/2008 0.048 0.046 Before Treatment Sample

TPPSD-BED1N-LEAD 8/11/2008 0.023 0.022 After Carbon Treatment Sample

TPPSD-BED1S-LEAD 8/11/2008 0.023 0.022 After Carbon Treatment Sample

2/3/10 Page 31 of 41 Table 4.1
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Active Sampling Locations

Tuppers Plains PSD, OH TPPSD-BED2N-LAG 8/11/2008 ND (<0.0023) ND (<0.0023) After Carbon Treatment Sample

cont. TPPSD-BED2S-LAG 8/11/2008 ND (<0.0023) ND (<0.0023) After Carbon Treatment Sample

TPPSDPT-N 9/8/2008 0.046 0.044 Before Treatment Sample

TPPSD-BED1N-LEAD 9/8/2008 0.028 0.027 After Carbon Treatment Sample

TPPSD-BED1S-LEAD 9/8/2008 0.026 0.025 After Carbon Treatment Sample

TPPSD-BED2N-LAG 9/8/2008 NQ (<0.012) NQ (<0.012) After Carbon Treatment Sample

TPPSD-BED2S-LAG 9/8/2008 ND (<0.0023) ND (<0.0023) After Carbon Treatment Sample

TPPSDPT-N 10/17/2008 0.054 0.052 Before Treatment Sample

TPPSD-BED1N-LAG 10/17/2008 ND (<0.0017) ND (<0.0017) After Carbon Treatment Sample

TPPSD-BED1S-LAG 10/17/2008 ND (<0.0017) ND (<0.0017) After Carbon Treatment Sample

TPPSD-BED2N-LEAD 10/17/2008 0.016 0.015 After Carbon Treatment Sample

TPPSD-BED2S-LEAD 10/17/2008 0.0094 0.009 After Carbon Treatment Sample

TPPSDPT-N 11/21/2008 0.049 0.047 Before Treatment Sample

TPPSD-BED1N-LAG 11/21/2008 ND (<0.0017) ND (<0.0017) After Carbon Treatment Sample

TPPSD-BED1S-LAG 11/21/2008 ND (<0.0017) ND (<0.0017) After Carbon Treatment Sample

TPPSD-BED2N-LEAD 11/21/2008 0.018 0.017 After Carbon Treatment Sample

TPPSD-BED2S-LEAD 11/21/2008 0.016 0.015 After Carbon Treatment Sample

TPPSDPT-N 12/16/2008 0.068 0.065 Before Treatment Sample

TPPSD-BED1N-LAG 12/16/2008 ND (<0.0017) ND (<0.0017) After Carbon Treatment Sample

TPPSD-BED1S-LAG 12/16/2008 ND (<0.0017) ND (<0.0017) After Carbon Treatment Sample

TPPSD-BED2N-LEAD 12/16/2008 0.03 0.029 After Carbon Treatment Sample

TPPSD-BED2S-LEAD 12/16/2008 0.028 0.027 After Carbon Treatment Sample

TPPSDPT-N 1/22/2009 0.05 0.048 Before Treatment Sample

TPPSD-BED1N-LAG 1/22/2009 ND (<0.0026) ND (<0.0026) After Carbon Treatment Sample

TPPSD-BED2N-LEAD 1/22/2009 0.026 0.025 After Carbon Treatment Sample

TPPSD-BED2S-LEAD 1/22/2009 0.025 0.024 After Carbon Treatment Sample

TPPSDPT-N 2/24/2009 0.065 0.062 Before Treatment Sample

TPPSD-BED1N-LAG 2/24/2009 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

TPPSD-BED1S-LAG 2/24/2009 ND (<0.0026) ND (<0.0026) After Carbon Treatment Sample

TPPSD-BED2N-LEAD 2/24/2009 0.032 0.031 After Carbon Treatment Sample

TPPSD-BED2S-LEAD 2/24/2009 0.026 0.025 After Carbon Treatment Sample

TPPSD-PT 3/26/2009 0.054 0.052 Prior to Treatment Sample

TPPSD-BED1N-LEAD 3/26/2009 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

TPPSD-BED2N-LAG 3/26/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

TPPSD-BED1S-LEAD 3/26/2009 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

TPPSD-BED2S-LAG 3/26/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

TPPSD-PT 4/20/2009 0.064 0.061 Prior to Treatment Sample

TPPSD-BED1N-LEAD 4/20/2009 0.015 0.014 After Carbon Treatment Sample

TPPSD-BED2N-LAG 4/20/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

TPPSD-BED1S-LEAD 4/20/2009 0.017 0.016 After Carbon Treatment Sample

TPPSD-BED2S-LAG 4/20/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

TPPSD-PT 5/13/2009 0.054 0.052 Prior to Treatment Sample

TPPSD-BED1N-LEAD 5/13/2009 0.018 0.017 After Carbon Treatment Sample

TPPSD-BED2N-LAG 5/13/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

TPPSD-BED1S-LEAD 5/13/2009 0.017 0.016 After Carbon Treatment Sample

TPPSD-BED2S-LAG 5/13/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

TPPSD-PT 6/23/2009 0.057 0.055 Prior to Treatment Sample

TPPSD-BED1N-LEAD 6/23/2009 0.02 0.019 After Carbon Treatment Sample

TPPSD-BED2N-LAG 6/23/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

TPPSD-BED1S-LEAD 6/23/2009 0.021 0.02 After Carbon Treatment Sample

TPPSD-BED2S-LAG 6/23/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

TPPSD-PT 7/21/2009 0.056 0.054 Prior to Treatment Sample

TPPSD-BED1N-LEAD 7/21/2009 0.024 0.023 After Carbon Treatment Sample

TPPSD-BED2N-LAG 7/21/2009 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

TPPSD-BED1S-LEAD 7/21/2009 0.019 0.018 After Carbon Treatment Sample

TPPSD-BED2S-LAG 7/21/2009 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

TPPSD-PT 8/19/2009 0.045 0.043 Prior to Treatment Sample

TPPSD-BED2N-LEAD 8/19/2009 0.016 0.015 After Carbon Treatment Sample

TPPSD-BED1N-LAG 8/19/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

TPPSD-BED2S-LEAD 8/19/2009 0.017 0.016 After Carbon Treatment Sample

2/3/10 Page 32 of 41 Table 4.1
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Active Sampling Locations

Tuppers Plains PSD, OH TPPSD-BED1S-LAG 8/19/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

cont. TPPSD-PT 9/14/2009 0.046 0.044 Prior to Treatment Sample

TPPSD-BED2N-LEAD 9/14/2009 0.023 0.022 After Carbon Treatment Sample

TPPSD-BED1N-LAG 9/14/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

TPPSD-BED2S-LEAD 9/14/2009 0.025 0.024 After Carbon Treatment Sample

TPPSD-BED1S-LAG 9/14/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

TPPSD-PT 10/28/2009 0.06 0.058 Prior to Treatment Sample

TPPSD-BED2N-LEAD 10/28/2009 0.03 0.029 After Carbon Treatment Sample

TPPSD-BED1N-LAG 10/28/2009 NQ (<0.016) NQ (<0.016) After Carbon Treatment Sample

TPPSD-BED2S-LEAD 10/28/2009 0.032 0.031 After Carbon Treatment Sample

TPPSD-BED1S-LAG 10/28/2009 NQ (<0.016) NQ (<0.016) After Carbon Treatment Sample

TPPSD-PT 11/24/2009 0.082 0.079 Prior to Treatment Sample

TPPSD-BED1N-LEAD 11/24/2009 NQ (<0.016) NQ (<0.016) After Carbon Treatment Sample

TPPSD-BED2N-LAG 11/24/2009 ND(<0.0033 ) ND(<0.0033 ) After Carbon Treatment Sample

TPPSD-BED1S-LEAD 11/24/2009 NQ (<0.016) NQ (<0.016) After Carbon Treatment Sample

TPPSD-BED2S-LAG 11/24/2009 ND(<0.0033 ) ND(<0.0033 ) After Carbon Treatment Sample

TPPSD-PT 12/15/2009 0.042 0.04 Prior to Treatment Sample

TPPSD-BED1N-LEAD 12/15/2009 NQ (<0.016) NQ (<0.016) After Carbon Treatment Sample

TPPSD-BED2N-LAG 12/15/2009 ND(<0.0033 ) ND(<0.0033 ) After Carbon Treatment Sample

TPPSD-BED1S-LEAD 12/15/2009 NQ (<0.016) NQ (<0.016) After Carbon Treatment Sample

TPPSD-BED2S-LAG 12/15/2009 ND(<0.0033 ) ND(<0.0033 ) After Carbon Treatment Sample

BWASH-TP-N 4/6/2006 0.00872 0.00838 NPDES Discharge Monitoring

BWASH-TP-S 4/6/2006 0.0176 0.0169 NPDES Discharge Monitoring

BWASH-TP-N 11/15/2006 0.0200 0.0190 NPDES Discharge Monitoring

BWASH-TP-S 11/15/2006 0.0180 0.0170 NPDES Discharge Monitoring

BWASH-TP-N 5/16/2007 NQ (<0.013) NQ (<0.013) NPDES Discharge Monitoring

BWASH-TP-N 5/16/07 (dup) ND (<0.0027) ND (<0.0027) NPDES Discharge Monitoring

BWASH-TP-S 5/16/2007 NQ (<0.013) NQ (<0.013) NPDES Discharge Monitoring

BWASH-TP-S 5/16/07 (dup) ND (0.0027) ND (<0.0027) NPDES Discharge Monitoring

BWASH-TP-N 11/7/2007 NQ (<0.016) NQ (<0.016) NPDES Discharge Monitoring

BWASH-TP-S 11/7/2007 0.0190 0.0180 NPDES Discharge Monitoring

BWASH-TP-S 11/7/07 (dup) 0.0180 0.0170 NPDES Discharge Monitoring

BWASH-TP-N 4/3/2008 0.0210 0.0200 NPDES Discharge Monitoring

BWASH-TP-S 4/3/2008 0.0160 0.0150 NPDES Discharge Monitoring

BWASH-TP-S 4/3/08 (dup) 0.0190 0.0180 NPDES Discharge Monitoring

BWASH-TP-N 10/8/2008 0.0400 0.0380 NPDES Discharge Monitoring

BWASH-TP-S 10/8/2008 0.0340 0.0330 NPDES Discharge Monitoring

BWASH-TP-S 10/8/08 (dup) 0.0420 0.0400 NPDES Discharge Monitoring

BWASH-TP 3/25/2009 0.0330 0.0320 NPDES Discharge Monitoring

BWASH-TP 3/25/09 (dup) 0.0330 0.0320 NPDES Discharge Monitoring

BWASH-TP 8/12/2009 0.018 0.017 NPDES Discharge Monitoring

BWASH-TP-2 8/12/2009 (dup) 0.018 0.017 NPDES Discharge Monitoring-Dup

BWASH-TP 11/24/2009 0.023 0.022 NPDES Discharge Monitoring

BWASH-TP-2 11/24/2009 (dup) 0.024 0.023 NPDES Discharge Monitoring-Dup

STALL-TP-S 3/31/2006 0.126 0.121 NPDES Discharge Monitoring

STALL-TP-N 3/31/2006 0.154 0.148 NPDES Discharge Monitoring

STALL-TP-N 11/14/2006 0.073 0.070 NPDES Discharge Monitoring

STALL-TP-S 4/2/2008 0.022 0.021 NPDES Discharge Monitoring

Mason County PSD, WV MASONCPSDAT 7/28/2005 0.024 0.023 After Treatment Sample

MASONCPSDAT 12/13/2006 0.029 0.028 After Treatment Sample

MASONCPSDAT 12/13/06 (dup) 0.027 0.026 After Treatment Sample

MASONCPSDAT 12/3/2007 NQ (<0.016) NQ (<0.016) After Treatment Sample

MASONCPSDAT 10/30/2008 NQ (<0.0085) NQ (<0.0085) After Treatment Sample

MASONCPSDAT 10/23/2009 NQ (<0.016) NQ (<0.016) After Treatment Sample

MASONCPSD1 1/29/2002 NQ (<0.050) Production Well

MASONCPSD1 3/27/2002 NQ (<0.050) Production Well

MASONCPSD1 4/25/2002 NQ (<0.050) Production Well

MASONCPSD1 9/23/2004 0.075 Production Well

MASONCPSD1 7/28/2005 0.019 0.018 Production Well

MASONCPSD1 7/28/2005 (dup) 0.018 0.017 duplicate

2/3/10 Page 33 of 41 Table 4.1
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Active Sampling Locations

Mason County PSD, WV MASONCPSD1 12/13/2006 0.015 0.015 Production Well

cont. MASONCPSD1 12/3/2007 NQ (<0.016) NQ (<0.016) Production Well

MASONCPSD1 10/30/2008 NQ (<0.0085) NQ (<0.0085) Production Well

MASONCPSD1 10/23/2009 NQ (<0.016) NQ (<0.016) Production Well

MASONCPSD1/3 1/7/2005 NQ (<0.05) NQ(<0.05) Production Wells Combined

MASONCPSD1/3 12/3/2007 NQ (<0.016) NQ (<0.016) Production Wells Combined

MASONCPSD2 1/29/2002 0.062 Production Well

MASONCPSD2 3/27/2002 0.084 Production Well

MASONCPSD2 4/25/2002 0.071 Production Well

MASONCPSD2 9/23/2004 NQ (<0.050) Production Well

MASONCPSD2 7/28/2005 0.040 0.038 Production Well

MASONCPSD2 12/13/2006 0.032 0.031 Production Well

MASONCPSD2 12/3/2007 0.030 0.029 Production Well

MASONCPSD2 10/30/2008 0.036 0.035 Production Well

MASONCPSD2 10/23/2009 0.031 0.03 Production Well

MASONCPSD2/3 12/13/2006 0.027 0.026 Production Wells Combined

MASONCPSD2/4 1/7/2005 NQ (<0.05) NQ(<0.05) Production Wells Combined

MASONCPSD3 1/29/2002 0.071 Production Well

MASONCPSD3 3/27/2002 0.102 Production Well

MASONCPSD3 4/25/2002 0.063 Production Well

MASONCPSD3 9/23/2004 0.068 Production Well

MASONCPSD3 7/28/2005 0.026 0.025 Production Well

MASONCPSD3 12/13/2006 0.019 0.018 Production Well

MASONCPSD3 12/3/2007 0.018 0.017 Production Well

MASONCPSD3 10/30/2008 0.011 0.011 Production Well

MASONCPSD3 10/30/08 (dup) 0.010 0.010 duplicate

MASONCPSD3 10/23/2009 0.018 0.017 Production Well

MASONCPSD4 9/23/2004 NQ (<0.050) Production Well

MASONCPSD4 9/23/04 (dup) NQ (<0.050) duplicate

MASONCPSD4 7/28/2005 0.035 0.033 Production Well

MASONCPSD4 12/13/2006 0.026 0.025 Production Well

MASONCPSD4 12/3/2007 0.056 0.054 Production Well

MASONCPSD4 12/3/07 (dup) 0.046 0.044 duplicate

MASONCPSD4 10/23/2009 0.02 0.019 Production Well

MASONCPSD4 10/23/2009 (dup) 0.02 0.019 duplicate

CRABCREEK PT 1/7/2005 NQ (<0.050) NQ (<0.050) Before Treatment Sample

CRABCREEK PT 9/22/2005 0.029 0.028 Before Treatment Sample

CRABCREEK PT 12/13/2006 0.020 0.019 Before Treatment Sample

CRABCREEK PT 12/3/2007 0.027 0.026 Before Treatment Sample

CRABCREEK PT 10/30/2008 0.017 0.016 Before Treatment Sample

CRABCREEK PT 10/26/2009 NQ (<0.016) NQ (<0.016) Before Treatment Sample

CRABCREEK AT 1/7/2005 NQ (<0.050) NQ (<0.050) After Treatment Sample

CRABCREEK AT 7/28/2005 0.016 0.016 After Treatment Sample

CRABCREEK AT 12/13/2006 0.020 0.019 After Treatment Sample

CRABCREEK AT 12/13/06 (dup) 0.022 0.021 duplicate

CRABCREEK AT 12/3/2007 0.021 0.020 After Treatment Sample

CRABCREEK AT 12/3/07 (dup) 0.025 0.024 duplicate

CRABCREEK AT 10/30/2008 0.014 0.013 After Treatment Sample

CRABCREEK AT 10/26/2009 ND(<0.0033 ) ND(<0.0033 ) After Treatment Sample

CRABCREEK Well 1 1/7/2005 NQ (<0.050) NQ (<0.050) Production Well

CRABCREEK Well 1 1/7/2005 NQ (<0.050) NQ (<0.050) Production Well

CRABCREEK Well 1 7/28/2005 0.014 0.013 Production Well

CRABCREEK Well 1 12/13/2006 0.019 0.018 Production Well

CRABCREEK Well 1 12/3/2007 0.020 0.019 Production Well

CRABCREEK Well 1 10/30/2008 0.012 0.012 Production Well

CRABCREEK Well 1 10/30/08 (dup) 0.012 0.012 duplicate

CRABCREEK Well 1 10/26/2009 NQ (<0.016) NQ (<0.016) Production Well

CRABCREEK Well 1 10/26/2009 (dup) NQ (<0.016) NQ (<0.016) duplicate

CRABCREEK Well 2 1/7/2005 ND (<0.01) ND (<0.01) Production Well

CRABCREEK Well 2 7/28/2005 0.028 0.027 Production Well

2/3/10 Page 34 of 41 Table 4.1
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Active Sampling Locations

Mason County PSD, WV CRABCREEK Well 2 12/13/2006 NQ (<0.0090) NQ (<0.0090) Production Well

cont. CRABCREEK Well 2 12/3/2007 NQ (<0.016) NQ (<0.016) Production Well

CRABCREEK Well 2 10/30/2008 0.014 0.013 Production Well

CRABCREEK Well 2 10/26/2009 ND(<0.0033 ) ND(<0.0033 ) Production Well

CRABCREEK Well 3 1/7/2005 NQ (<0.050) NQ (<0.050) Production Well

CRABCREEK Well 3 7/28/2005 0.015 0.015 Production Well

CRABCREEK Well 3 12/13/2006 0.020 0.019 Production Well

CRABCREEK Well 3 12/3/2007 0.025 0.024 Production Well

CRABCREEK Well 3 10/30/2008 0.010 0.010 Production Well

CRABCREEK Well 3 10/26/2009 0.019 0.018 Production Well

CRABCREEK-PT 1/20/2009 0.015 0.014 Prior to Treatment Sample

CRABCREEK-BED1-LEAD 1/20/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

CRABCREEK-BED2-LAG 1/20/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

CRABCREEK-PT 2/23/2009 NQ (<0.013) NQ (<0.013) Prior to Treatment Sample

CRABCREEK-BED1-LEAD 2/23/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

CRABCREEK-BED2-LAG 2/23/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

CRABCREEK-PT 3/27/2009 NQ (<0.013) NQ (<0.013) Prior to Treatment Sample

CRABCREEK-BED1-LEAD 3/27/2009 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

CRABCREEK-BED2-LAG 3/27/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

CRABCREEK-PT 4/21/2009 NQ (<0.021) NQ (<0.021) Prior to Treatment Sample

CRABCREEK-BED1-LEAD 4/21/2009 ND(<0.0043 ) ND(<0.0043 ) After Carbon Treatment Sample

CRABCREEK-BED2-LAG 4/21/2009 ND(<0.0043 ) ND(<0.0043 ) After Carbon Treatment Sample

CRABCREEK-PT 5/13/2009 0.017 0.016 Prior to Treatment Sample

CRABCREEK-BED1-LEAD 5/13/2009 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

CRABCREEK-BED2-LAG 5/13/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

CRABCREEK-PT 6/24/2009 NQ (<0.013) NQ (<0.013) Prior to Treatment Sample

CRABCREEK-BED1-LEAD 6/24/2009 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

CRABCREEK-BED2-LAG 6/24/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

CRABCREEK-PT 7/22/2009 NQ (<0.013) NQ (<0.013) Prior to Treatment Sample

CRABCREEK-BED1-LEAD 7/22/2009 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

CRABCREEK-BED2-LAG 7/22/2009 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

CRABCREEK-PT 8/20/2009 NQ (<0.013) NQ (<0.013) Prior to Treatment Sample

CRABCREEK-BED1-LEAD 8/20/2009 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

CRABCREEK-BED2-LAG 8/20/2009 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

CRABCREEK-PT 9/22/2009 0.018 0.017 Prior to Treatment Sample

CRABCREEK-BED2-LEAD 9/22/2009 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

CRABCREEK-BED1-LAG 9/22/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

CRABCREEK-PT 10/26/2009 NQ (<0.016) NQ (<0.016) Prior to Treatment Sample

CRABCREEK-BED2-LEAD 10/26/2009 ND(<0.0033 ) ND(<0.0033 ) After Carbon Treatment Sample

CRABCREEK-BED1-LAG 10/26/2009 ND(<0.0033 ) ND(<0.0033 ) After Carbon Treatment Sample

CRABCREEK-PT 11/24/2009 NQ (<0.016) NQ (<0.016) Prior to Treatment Sample

CRABCREEK-BED2-LEAD 11/24/2009 NQ (<0.016) NQ (<0.016) After Carbon Treatment Sample

CRABCREEK-BED1-LAG 11/24/2009 ND(<0.0033 ) ND(<0.0033 ) After Carbon Treatment Sample

LAKIN AT 10/29/2004 ND (<0.010) After Treatment Sample

LAKIN AT 7/28/2005 ND (<0.001) ND (<0.001) After Treatment Sample

LAKIN AT 12/13/2006 ND (<0.0018) ND (<0.0018) After Treatment Sample

LAKIN AT 12/13/2006 (dup) ND (<0.0018) ND (<0.0018) After Treatment Sample

LAKIN AT 12/3/2007 ND (<0.0031) ND (<0.0031) After Treatment Sample

LAKIN AT 3/25/2008 ND (<0.0022) ND (<0.0022) After Treatment Sample

LAKIN AT 6/16/2008 ND (<0.0019) ND (<0.0019) After Treatment Sample

LAKIN AT 9/9/2008 ND (<0.0023) ND (<0.0023) After Treatment Sample

LAKIN AT 10/30/2008 ND (<0.0017) ND (<0.0017) After Treatment Sample

LAKIN AT 2/23/2009 ND (<0.0026) ND (<0.0026) After Treatment Sample

LAKIN AT 4/21/2009 ND(<0.0026 ) ND(<0.0026 ) After Treatment Sample

LAKIN AT 7/22/2009 ND(<0.0026 ) ND(<0.0026 ) After Treatment Sample

LAKIN AT 10/26/2009 NQ (<0.016) NQ (<0.016) After Treatment Sample

LAKIN WELL 1 10/29/2004 ND (<0.010) Production Well

LAKIN WELL 1 7/28/2005 ND (<0.001) ND (<0.001) Production Well

LAKIN WELL 1 12/13/2006 ND (<0.0018) ND (<0.0018) Production Well

LAKIN WELL 1 12/3/2007 ND (<0.0031) ND (<0.0031) Production Well

2/3/10 Page 35 of 41 Table 4.1
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Active Sampling Locations

Mason County PSD, WV LAKIN WELL 1 3/25/2008 ND (<0.0022) ND (<0.0022) Production Well

cont. LAKIN WELL 1 6/16/2008 ND (<0.0019) ND (0.0019) Production Well

LAKIN WELL 1 6/16/08 (dup) ND (<0.0019) ND (0.0019) duplicate

LAKIN WELL 1 9/9/2008 ND (<0.0023) ND (<0.0023) Production Well

LAKIN WELL 1 10/30/2008 ND (<0.0017) ND (0.0017) Production Well

LAKIN WELL 1 2/23/2009 ND (<0.0026) ND (0.0026) Production Well

LAKIN WELL 1 4/21/2009 ND(<0.0026 ) ND(<0.0026 ) Production Well

LAKIN WELL 1 4/21/2009 (dup) ND(<0.0026 ) ND(<0.0026 ) duplicate

LAKIN WELL 1 7/22/2009 ND(<0.0026 ) ND(<0.0026 ) Production Well

LAKIN WELL 1 10/26/2009 ND(<0.0033 ) ND(<0.0033 ) Production Well

LAKIN WELL 1 10/26/2009 (dup) ND(<0.0033 ) ND(<0.0033 ) duplicate

LAKIN WELL 2 10/29/2004 ND (<0.010) Production Well

LAKIN WELL 2 10/29/2004 (dup) ND (<0.010) duplicate

LAKIN WELL 2 7/28/2005 ND (<0.001) ND (<0.001) Production Well

LAKIN WELL 2 12/13/2006 ND (<0.0018) ND (<0.0018) Production Well

LAKIN WELL 2 12/3/2007 ND (<0.0031) ND (<0.0031) Production Well

LAKIN WELL 2 12/3/2007 (dup) ND (<0.0031) ND (<0.0031) Production Well

LAKIN WELL 2 3/25/2008 ND (<0.0022) ND (<0.0022) Production Well

LAKIN WELL 2 3/25/08 (dup) ND (<0.0022) ND (<0.0022) duplicate

LAKIN WELL 2 6/16/2008 ND (<0.0019) ND (<0.0019) Production Well

LAKIN WELL 2 9/9/2008 ND (<0.0023) ND (<0.0023) Production Well

LAKIN WELL 2 10/30/2008 ND (<0.0017) ND (<0.0017) Production Well

LAKIN WELL 2 10/30/08 (dup) ND (<0.0017) ND (<0.0017) duplicate

LAKIN WELL 2 2/23/2009 ND (<0.0026) ND (<0.0026) Production Well

LAKIN WELL 2 4/21/2009 ND(<0.0026 ) ND(<0.0026 ) Production Well

LAKIN WELL 2 7/22/2009 ND(<0.0026 ) ND(<0.0026 ) Production Well

LAKIN WELL 2 7/22/2009 (dup) ND(<0.0026 ) ND(<0.0026 ) duplicate

LAKIN WELL 2 10/26/2009 ND(<0.0033 ) ND(<0.0033 ) Production Well

LAKIN WELL 3 10/29/2004 ND (<0.010) Production Well

LAKIN WELL 3 7/28/2005 ND (<0.001) ND (<0.001) Production Well

LAKIN WELL 3 12/13/2006 ND (<0.0018) ND (<0.0018) Production Well

LAKIN WELL 3 3/25/2008 ND (<0.0022) ND (<0.0022) Production Well

LAKIN WELL 3 6/16/2008 ND (<0.0019) ND (<0.0019) Production Well

LAKIN WELL 3 9/9/2008 ND (<0.0023) ND (<0.0023) Production Well

LAKIN WELL 3 9/9/08 (dup) ND (<0.0023) ND (<0.0023) duplicate

LAKIN WELL 3 10/30/2008 ND (<0.0017) ND (<0.0017) Production Well

LAKIN WELL 3 2/23/2009 ND (<0.0026) ND (<0.0026) Production Well

LAKIN WELL 3 2/23/09 (dup) ND (<0.0026) ND (<0.0026) duplicate

LAKIN WELL 3 4/21/2009 ND(<0.0026 ) ND(<0.0026 ) Production Well

LAKIN WELL 3 7/22/2009 ND(<0.0026 ) ND(<0.0026 ) Production Well

LAKIN WELL 3 10/26/2009 ND(<0.0033 ) ND(<0.0033 ) Production Well

LETART-PT 12/9/2008 0.018 0.017 Prior to Treatment Sample

LETART-BED1-LEAD 12/9/2008 ND (<0.0017) ND (<0.0017) After Carbon Treatment Sample

LETART-BED2-LAG 12/9/2008 ND (<0.0017) ND (<0.0017) After Carbon Treatment Sample

LETART-PT 1/20/2009 0.029 0.028 Prior to Treatment Sample

LETART-BED1-LEAD 1/20/2009 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

LETART-BED2-LAG 1/20/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LETART-PT 2/23/2009 0.021 0.02 Prior to Treatment Sample

LETART-BED1-LEAD 2/23/2009 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

LETART-BED2-LAG 2/23/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LETART-PT 3/27/2009 NQ (<0.013) NQ (<0.013) Prior to Treatment Sample

LETART-BED1-LEAD 3/27/2009 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

LETART-BED2-LAG 3/27/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LETART-PT 4/21/2009 NQ (<0.021) NQ (<0.021) Prior to Treatment Sample

LETART-BED1-LEAD 4/21/2009 NQ (<0.021) NQ (<0.021) After Carbon Treatment Sample

LETART-BED2-LAG 4/21/2009 ND(<0.0043 ) ND(<0.0043 ) After Carbon Treatment Sample

LETART-PT 5/13/2009 0.025 0.024 Prior to Treatment Sample

LETART-BED1-LEAD 5/13/2009 0.014 0.013 After Carbon Treatment Sample

LETART-BED2-LAG 5/13/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LETART-PT 6/24/2009 NQ (<0.013) NQ (<0.013) Prior to Treatment Sample

2/3/10 Page 36 of 41 Table 4.1
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Active Sampling Locations

Mason County PSD, WV LETART-BED1-LEAD 6/24/2009 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

cont. LETART-BED2-LAG 6/24/2009 ND(<0.0026 ) ND(<0.0026 ) After Carbon Treatment Sample

LETART-PT 7/22/2009 NQ (<0.024) NQ (<0.024) Prior to Treatment Sample

LETART-BED1-LEAD 7/22/2009 NQ (<0.024) NQ (<0.024) After Carbon Treatment Sample

LETART-BED2-LAG 7/22/2009 NQ (<0.024) NQ (<0.024) After Carbon Treatment Sample

LETART-PT 8/24/2009 NQ (<0.013) NQ (<0.013) Prior to Treatment Sample

LETART-BED1-LEAD 8/24/2009 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

LETART-BED2-LAG 8/24/2009 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

LETART-PT 9/22/2009 0.029 0.028 Prior to Treatment Sample

LETART-BED1-LEAD 9/22/2009 0.019 0.018 After Carbon Treatment Sample

LETART-BED2-LAG 9/22/2009 NQ (<0.016) NQ (<0.016) After Carbon Treatment Sample

LETART-PT 10/23/2009 0.019 0.018 Prior to Treatment Sample

LETART-BED2-LEAD 10/23/2009 NQ (<0.016) NQ (<0.016) After Carbon Treatment Sample

LETART-BED1-LAG 10/23/2009 ND(<0.0033 ) ND(<0.0033 ) After Carbon Treatment Sample

LETART-PT 11/24/2009 0.024 0.023 Prior to Treatment Sample

LETART-BED2-LEAD 11/24/2009 0.019 0.018 After Carbon Treatment Sample

LETART-BED1-LAG 11/24/2009 ND(<0.0033 ) ND(<0.0033 ) After Carbon Treatment Sample

Racine Locks and Dam, WV RACINELD 1/4/2002 0.518 Miscellaneous Use

RACINELD 9/17/2004 0.109 Miscellaneous Use

RACINELD 7/28/2005 0.054 0.052 Miscellaneous Use

Town of Mason TOMason Well 3 AT 1/7/2005 ND (<0.01) ND (<0.01) After Treatment Sample

TOMason Well 3 AT 1/7/2005 ND (<0.01) ND (<0.01) Production Well

Point Pleasant, WV PPPSD PT 5/5/2005 ND (<0.001) ND (<0.001) Before Treatment Sample

PPPSD AT 5/5/2005 ND (<0.001) ND (<0.001) After Treatment Sample

PPPSDWell 1 5/5/2005 ND (<0.001) ND (<0.001) Production Well

PPPSDWell 2 5/5/2005 ND (<0.001) ND (<0.001) Production Well

PPPSDWell 3 5/5/2005 ND (<0.001) ND (<0.001) Production Well

PPPSDWell 7 5/5/2005 ND (<0.001) ND (<0.001) Production Well

Village of Pomeroy, OH VOPAT 3/26/2002 0.066 After Treatment Sample

VOPAT 4/24/2002 0.063 After Treatment Sample

VOPAT 9/23/2004 0.107 After Treatment Sample

VPDECON Water 10/20/2005 NQ (<0.013) NQ (<0.013) After Treatment Sample

VOPWELL1 4/24/2002 ND (<0.050) Production Well

VOPWELL1 9/23/2004 ND (<0.010) Production Well

VOPWELL1 9/22/2006 ND (<0.0026) ND (<0.0026) Production Well

VOPWELL1 9/6/2007 ND (<0.0012) ND (<0.0012) Production Well

VOPWELL1 9/26/2008 ND (<0.0017) ND (<0.0017) Production Well

VOPWELL1 10/27/2009 ND(<0.0033 ) ND(<0.0033 ) Production Well

VOPWELL2 3/26/2002 0.069 Production Well

VOPWELL2 4/24/2002 ND (<0.050) Production Well

VOPWELL2 9/23/2004 0.705 Production Well

VOPWELL2 2/3/2005 ND (<0.010) ND (<0.010) Production Well

VOPWELL2 2/16/2005 ND (<0.010) ND (<0.010) Production Well

VOPWELL2 9/22/2006 ND (<0.0026) ND (<0.0026) Production Well

VOPWELL2 9/6/2007 ND (<0.0012) ND (<0.0012) Production Well

VOPWELL2 9/26/2008 ND (<0.0017) ND (<0.0017) Production Well

VOPWELL2 10/27/2009 ND(<0.0033 ) ND(<0.0033 ) Production Well

VOPWELL4 3/26/2002 0.085 Production Well

VOPWELL4 4/24/2002 0.071 Production Well

VOPWELL4 9/23/2004 NQ (<0.050) Production Well

VOPWELL4 9/22/2006 0.017 0.016 Production Well

VOPWELL4 9/6/2007 0.0074 0.0071 Production Well

VOPWELL4 9/6/2007 (dup) 0.0087 0.0084 Production Well

VOPWELL4 9/26/2008 0.0090 0.0086 Production Well

VOPWELL4 9/26/2008 (dup) 0.0093 0.0089 Production Well

VOPWELL4 10/27/2009 NQ (<0.016) NQ (<0.016) Production Well

VOPWELL4 10/27/2009 (dup) NQ (<0.016) NQ (<0.016) Production Well

VOPWELL5 9/22/2006 ND (<0.0026) ND (<0.0026) Production Well

VOPWELL5 9/6/2007 ND (<0.0012) ND (<0.0012) Production Well

VOPWELL5 9/26/2008 NQ (<0.0085) NQ (<0.0085) Production Well

2/3/10 Page 37 of 41 Table 4.1
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Active Sampling Locations

Village of Pomeroy, OH POM-BACKWASH1 2/9/2006 ND (<0.0023) ND (<0.0023) NPDES Discharge Monitoring

cont. POM-BACKWASH1 4/14/2007 ND (<0.0027) ND (<0.0027) NPDES Discharge Monitoring

POM-BACKWASH1 4/14/07 (dup) ND (<0.0027) ND (<0.0027) NPDES Discharge Monitoring

POM-BACKWASH1 4/30/2008 ND (<0.0019) ND (<0.0019) NPDES Discharge Monitoring

POM-BACKWASH1 4/30/08 (dup) ND (<0.0019) ND (<0.0019) NPDES Discharge Monitoring

POM-BACKWASH 1/29/2009 ND (<0.0026) ND (<0.0026) NPDES Discharge Monitoring

POM-BACKWASH 1/29/09 (dup) ND (<0.0026) ND (<0.0026) NPDES Discharge Monitoring

POM-BACKWASH 10/21/2009 ND(<0.0021 ) ND(<0.0021 ) NPDES Discharge Monitoring

POM-BACKWASH 10/21/2009 (dup) ND(<0.0021 ) ND(<0.0021 ) NPDES Discharge Monitoring

POM-STALL 4/29/2008 ND (<0.0019) ND (<0.0019) NPDES Discharge Monitoring

POM-STALL 1/28/2009 0.018 0.017 NPDES Discharge Monitoring

POM-INFLUENT 2/22/2006 0.013 0.013 Prior to Treatment Sample

POM-LEAD 2/22/2006 ND (<0.0023) ND (<0.0023) After Carbon Treatment Sample

POM-LAG 2/22/2006 ND (<0.0023) ND (<0.0023) After Carbon Treatment Sample

VOP-PT 5/9/2006 0.0139 0.0134 Prior to Treatment Sample

VOP-BED1-LEAD 5/9/2006 NQ (<0.006) NQ (<0.006) After Carbon Treatment Sample

VOP-BED2-LAG 5/9/2006 ND (<0.0012) ND (<0.0012) After Carbon Treatment Sample

VOP-BED1-LEAD 5/9/2006 (dup) NQ (<0.006) NQ (<0.006) After Carbon Treatment Sample

VOP-PT 6/15/2006 0.0103 0.0099 Prior to Treatment Sample

VOP-BED1-LEAD 6/15/2006 NQ (<0.006) NQ (<0.006) After Carbon Treatment Sample

VOP-BED2-LAG 6/15/2006 ND (<0.0012) ND (<0.0012) After Carbon Treatment Sample

VOP-PT 7/27/2006 0.0167 0.0160 Prior to Treatment Sample

VOP-BED1-LEAD 7/27/2006 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

VOP-BED2-LAG 7/27/2006 ND (<0.0026) ND (<0.0026) After Carbon Treatment Sample

VOP-PT 8/18/2006 0.015 0.014 Prior to Treatment Sample

VOP-BED1-LEAD 8/18/2006 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

VOP-BED2-LAG 8/18/2006 ND (<0.0026) ND (<0.0026) After Carbon Treatment Sample

VOP-PT 9/22/2006 0.017 0.016 Prior to Treatment Sample

VOP-BED1-LEAD 9/22/2006 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

VOP-BED2-LAG 9/22/2006 ND (<0.0026) ND (<0.0026) After Carbon Treatment Sample

VOP-PT 10/12/2006 0.019 0.018 Prior to Treatment Sample

VOP-BED1-LEAD 10/12/2006 0.011 0.011 After Carbon Treatment Sample

VOP-BED2-LAG 10/12/2006 ND (<0.0018) ND (<0.0018) After Carbon Treatment Sample

VOP-PT 11/9/2006 NQ (<0.0090) NQ (<0.0090) Prior to Treatment Sample

VOP-BED1-LEAD 11/9/2006 ND (<0.0018) ND (<0.0018) After Carbon Treatment Sample

VOP-BED2-LAG 11/9/2006 ND (<0.0018) ND (<0.0018) After Carbon Treatment Sample

VOP-PT 12/18/2006 NQ (<0.0090) NQ (<0.0090) Prior to Treatment Sample

VOP-BED1-LEAD 12/18/2006 NQ (<0.0090) NQ (<0.0090) After Carbon Treatment Sample

VOP-BED2-LAG 12/18/2006 ND (<0.0018) ND (<0.0018) After Carbon Treatment Sample

VOP-PT 1/16/2007 0.022 0.021 Prior to Treatment Sample

VOP-BED1-LEAD 1/16/2007 0.0082 0.0079 After Carbon Treatment Sample

VOP-BED2-LAG 1/16/2007 NQ (<0.0051) NQ (<0.0051) After Carbon Treatment Sample

VOP-PT 2/15/2007 0.0068 0.0065 Prior to Treatment Sample

VOP-BED1-LEAD 2/15/2007 0.0054 0.0052 After Carbon Treatment Sample

VOP-BED2-LAG 2/15/2007 NQ (<0.0051) NQ (<0.0051) After Carbon Treatment Sample

VOP-PT 3/27/2007 ND (<0.0027) ND (<0.0027) Prior to Treatment Sample

VOP-BED1-LEAD 3/27/2007 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

VOP-BED2-LAG 3/27/2007 ND (<0.0027) ND (<0.0027) After Carbon Treatment Sample

VOP-PT 6/20/2007 NQ (<0.0062) NQ (<0.0062) Prior to Treatment Sample

VOP-BED1-LAG 6/20/2007 ND (<0.0012) ND (<0.0012) After Carbon Treatment Sample

VOP-BED2-LEAD 6/20/2007 ND (<0.0012) ND (<0.0012) After Carbon Treatment Sample

VOP-PT 9/6/2007 0.012 0.012 Prior to Treatment Sample

VOP-BED1-LAG 9/6/2007 ND (<0.0012) ND (<0.0012) After Carbon Treatment Sample

VOP-BED2-LEAD 9/6/2007 NQ (<0.0062) NQ (<0.0062) After Carbon Treatment Sample

VOP-PT 12/4/2007 NQ (<0.016) NQ (<0.016) Prior to Treatment Sample

VOP-BED1-LAG 12/4/2007 NQ (<0.016) NQ (<0.016) After Carbon Treatment Sample

VOP-BED2-LEAD 12/4/2007 NQ (<0.016) NQ (<0.016) After Carbon Treatment Sample

VOP-PT 3/13/2008 0.018 0.017 Prior to Treatment Sample

VOP-BED1-LAG 3/13/2008 NQ (<0.011) NQ (<0.011) After Carbon Treatment Sample

VOP-BED2-LEAD 3/13/2008 0.012 0.012 After Carbon Treatment Sample

2/3/10 Page 38 of 41 Table 4.1
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Active Sampling Locations

Village of Pomeroy, OH VOP-PT 6/18/2008 NQ (<0.0096) NQ (<0.0096) Prior to Treatment Sample

cont. VOP-BED1-LEAD 6/18/2008 NQ (<0.0096) NQ (<0.0096) After Carbon Treatment Sample

VOP-BED2-LAG 6/18/2008 ND (<0.0019) ND (<0.0019) After Carbon Treatment Sample

VOP-PT 9/8/2008 NQ (<0.012) NQ (<0.012) Prior to Treatment Sample

VOP-BED1-LEAD 9/8/2008 NQ (<0.012) NQ (<0.012) After Carbon Treatment Sample

VOP-BED2-LAG 9/8/2008 ND (<0.0023) ND (<0.0023) After Carbon Treatment Sample

VOP-PT 12/16/2008 0.013 0.012 Prior to Treatment Sample

VOP-BED1-LEAD 12/16/2008 0.010 0.010 After Carbon Treatment Sample

VOP-BED2-LAG 12/16/2008 NQ (<0.0085) NQ (<0.0085) After Carbon Treatment Sample

VOP-PT 3/26/2009 NQ (<0.013) NQ (<0.013) Prior to Treatment Sample

VOP-BED2-LEAD 3/26/2009 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

VOP-BED1-LAG 3/26/2009 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

VOP-PT 5/13/2009 NQ (<0.013) NQ (<0.013) Prior to Treatment Sample

VOP-BED2-LEAD 5/13/2009 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

VOP-BED1-LAG 5/13/2009 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

VOP-PT 7/1/2009 NQ (<0.013) NQ (<0.013) Prior to Treatment Sample

VOP-BED2-LEAD 7/1/2009 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

VOP-BED1-LAG 7/1/2009 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

VOP-PT 8/24/2009 NQ (<0.013) NQ (<0.013) Prior to Treatment Sample

VOP-BED2-LEAD 8/24/2009 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

VOP-BED1-LAG 8/24/2009 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

VOP-PT 9/14/2009 NQ (<0.013) NQ (<0.013) Prior to Treatment Sample

VOP-BED2-LEAD 9/14/2009 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

VOP-BED1-LAG 9/14/2009 NQ (<0.013) NQ (<0.013) After Carbon Treatment Sample

VOP-PT 10/21/2009 NQ (<0.016) NQ (<0.016) Prior to Treatment Sample

VOP-BED1-LEAD 10/21/2009 NQ (<0.016) NQ (<0.016) After Carbon Treatment Sample

VOP-BED2-LAG 10/21/2009 ND(<0.0033 ) ND(<0.0033 ) After Carbon Treatment Sample

2/3/10 Page 39 of 41 Table 4.1
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Parkersburg, WV PPSDPT 3/6/2002 NQ (<0.050) Before Treatment Sample

PPSDPT 12/29/2005 0.085 0.082 Before Treatment Sample

PPSDPT 3/2/2007 0.023 0.022 Before Treatment Sample

PPSDAT 3/6/2002 NQ (<0.050) After Treatment Sample

PPSDAT 4/25/2002 NQ (<0.050) After Treatment Sample

PPSDAT 12/29/2005 0.068 0.065 After Treatment Sample

PPSDAT 3/2/2007 0.027 0.026 After Treatment Sample

PPSDRANY1 3/6/2002 0.069 Production Well

PPSDRANY1 3/6/2002 0.069 duplicate

PPSDRANY1 4/25/2002 0.075 Production Well

PPSDRANY1 12/29/2005 0.109 0.105 Production Well

PPSDRANY1 3/2/2007 0.086 0.083 Production Well

PPSDRANY2 3/6/2002 ND (<0.010) Production Well

PPSDRANY2 12/29/2005 0.028 0.026 Production Well

PPSDRANY2 3/2/2007 0.0086 0.0083 Production Well

PPSDRANY3 3/6/2002 ND (<0.010) Production Well

PPSDRANY3 12/29/2005 0.046 0.044 Production Well

PPSDRANY3 3/2/2007 0.041 0.039 Production Well

PPSDRANY4 3/6/2002 ND (<0.010) Production Well

PPSDRANY4 12/29/2005 NQ (<0.0086) NQ (<0.0086) Production Well

PPSDRANY4 3/2/2007 0.0072 0.0069 Production Well

PPSDRANY5 3/6/2002 ND (<0.010) Production Well

PPSDRANY5 12/29/2005 NQ (<0.0086) NQ (<0.0086) Production Well

PPSDRANY5 3/2/2007 NQ (<0.0051) NQ (<0.0051) Production Well

General Electric, WV GE WELL 3 1/3/2002 1.780 Production Well

GE WELL 3 1/3/2002 1.870 duplicate

GE WELL 3 2/21/2002 1.750 Production Well

GE WELL 3 4/26/2002 1.840 Production Well

Belleville Hydra Plant, WV BELLEVILLELD 1/29/2002 NQ (<0.050) Miscellaneous Use

Ravenswood Municipal, WV COR ASIN 3/27/2002 ND (<0.010) Air Stripper In 

COR ASOUT 3/27/2002 NQ (<0.050) Air Stripper Out

COR BLEND AT 3/27/2002 ND (<0.010) Blend After Treatment

COR WELL1 3/27/2002 ND (<0.010) Production Well

COR WELL 2 3/27/2002 ND (<0.010) Production Well

COR WELL3 3/27/2002 ND (<0.010) Production Well

COR WELL 4 3/27/2002 ND (<0.010) Production Well

COR WELL 5 3/27/2002 ND (<0.010) Production Well

Village of Racine, OH VORAT 3/26/2002 ND (<0.010) After Treatment Sample

VORAT 9/16/2004 ND (<0.010) After Treatment Sample

VORRV3 3/26/2002 ND (<0.010) Production Well

VORRV3 9/16/2004 ND (<0.010) Production Well

VORWELL1 3/26/2002 ND (<0.010) Production Well

VORWELL1 9/16/2004 ND (<0.010) Production Well

VORWELL2 3/26/2002 ND (<0.010) Production Well

VORWELL2 9/16/2004 ND (<0.010) Production Well

New Haven Water Dept., WV NHPSDAT 4/10/2002 ND (<0.010) After Treatment Sample

NHPSDPW1 4/10/2002 NQ (<0.050) Production Well

NHPSDPW1 4/10/2002 NQ (<0.050) duplicate

Historic Sampling Locations

2/3/10 Page 40 of 41 Table 4.1
Table 4.1

APFO and PFOA Results for Public Water Supply Sampling, West Virginia and Ohio

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample ID Sample Date APFO (C-8) ug/L PFOA ug/L* Comments

Historic Sampling Locations

Village of Syracuse, OH VOSAT 3/29/2002 NQ (<0.050) After Treatment Sample

VOSAT 4/24/2002 ND (<0.010) After Treatment Sample

VOSAT 9/23/2004 ND (<0.010) After Treatment Sample

VOSAT 9/23/04 (dup) ND (<0.010) duplicate

VOS NORTH 2 3/29/2002 NQ (<0.050) Production Well

VOS NORTH 2 4/24/2002 0.491 Production Well

VOS NORTH 2 9/23/2004 ND (<0.010) Production Well

VOS SOUTH R3 3/26/2002 0.208 Production Well

VOS SOUTH R3 4/24/2002 ND (<0.010) Production Well

VOS SOUTH R3 9/23/2004 NQ (<0.050) Production Well

Marietta, OH PSD-WELLPT 6/26/2007 NQ (<0.0062) NQ (<0.0062) Before Treatment Sample

PSD-WELL1 6/26/2007 0.013 0.012 Production Well

PSD-WELL5 6/26/2007 NQ (<0.0062) NQ (<0.0062) Production Well

PSD-WELL9 6/26/2007 0.018 0.017 Production Well

PSD-WELL8 6/26/2007 0.0099 0.0097 Production Well

PSD-WELL2 6/26/2007 NQ (<0.0062) NQ (<0.0062) Production Well

PSD-WELL4 6/26/2007 NQ (<0.0062) NQ (<0.0062) Production Well

PSD-WELLAT 6/26/2007 0.0079 0.0076 After Treatment Sample

City of Vienna, WV VPSD WELL14 5/10/2007 0.060 0.058 Production Well

VPSD WELL13 5/10/2007 0.042 0.040 Production Well

VPSD WELL12 5/10/2007 0.079 0.076 Production Well

VPSD WELL11 5/10/2007 0.031 0.030 Production Well

VPSD WELL10 5/10/2007 0.041 0.039 Production Well

VPSD WELL9 5/10/2007 0.030 0.029 Production Well

VPSD WELL8 5/10/2007 0.049 0.047 Production Well

VPSD WELL7 5/10/2007 0.061 0.059 Production Well

VPSD AT 5/10/2007 0.058 0.056 After Treatment Sample

Warren, OH WarrenPSD-Well1 9/28/2007 ND (<0.0031) ND (<0.0031) Production Well

WarrenPSD-Well2 9/28/2007 0.022 0.021 Production Well

WarrenPSD-Well3 9/28/2007 ND (<0.0031) ND (<0.0031) Production Well

WarrenPSD-AT 9/28/2007 NQ (<0.016) NQ (<0.016) After Treatment Sample

* Both APFO (C-8) and PFOA are reported starting with the 4Q04 sampling event.

** New personnel conducted sampling starting with 2Q05 event and subsequently determined that samples from 2Q05 

 through 4Q05 that were identified as K16-PW01 were actually collected from L04-PW01.

*** New personnel conducted sampling starting with 2Q05 event and subsequently determined that the incorrect sampling 

 point was sampled from 2Q05 through 4Q05.

**** Sample collected from concession stand sink faucet. Sampled just after the "big flood". Island still covered with thick

layer of river sediments. Access to wellhouse may have been restricted.

^System 1/Well A - "Old System" consists of a typical pressure tank and submersible pump. Rudimentary sanitation equipment was

present, but did not appear functional. This system is used to supply the superintendant's house (and any other misc. small

demand needs) during the winter months. When System 1 is online, System 2 is inactive.

^^System 2/Well B - "New System" consists of (4) 150+ gallon pressure tanks operating in parallel which feed into a 2000 (approx.) 

gallon steel storage tank. Sanitation equipment was not observed, but likely exists. This system is used to supply all water

needs during spring, summer, and fall. It's primary advantage over system 1 is capacity. However, the system lacks

freeze protection so it is shut down during the winter. When System 2 is online, System 1 is inactive.

ND = Not Detected at or above the limit of detection (LOD). The listed LOD is approximate and varies by instrument and over time.

NQ = Not Quantifiable. Detected at a level above the LOD and below the limit of quantification (LOQ).

Misc. = Miscellaneous water use is not used for drinking.

& L04-PW01 is also referred to as the Gallery well and V04-PW01 is also referred to as the Ranney well. West Well Field #1

is also referred to as West Field Well Header 1.

@ Samples mislabeled in the field.

2/3/10 Page 41 of 41 Table 4.1
Table 4.2

Residential GAC Systems, WV - Historic Data

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample Identification# Date APFO (ug/L)

*PFOA 

(ug/L) **LOD (ug/L) **LOQ (ug

AbbottRL WWK-D-ABBOTT RL 12/11/2001 0.0606 0.01 0.05

WWK-D-ABBOTT RL 4/11/2002 NQ 0.01 0.05

AbbottS WWK-D-ABBOTT S 12/12/2001 0.22 0.01 0.05

WWK-D-ABBOTT S 4/11/2002 0.422 0.01 0.05

DRL-D-ABBOTTS 6/28/2004 0.435 0.01 0.05

DRL-D-ABBOTT S 9/20/2004 0.563 0.01 0.05DRL-D-ABBOTT S 12/2/2004 0.581 0.558 0.01 0.05DRL-D-ABBOTT S 1/24/2005 0.344 0.331 0.01 0.05DRL-D-ABBOTT S 4/20/2005 0.413 0.397 0.01 0.05DRL-D-ABBOTT S 7/13/2005 0.318 0.306 0.0015 0.0073DRL-D-ABBOTT S 10/12/2005 0.423 0.406 0.0022 0.011

1556ClubDr WWK-D-ALHEART R 12/19/2001 2.8 0.01 0.05

AtkinsonJR WWK-D-ATKINSON J2 1/9/2002 0.149 0.01 0.05

WWK-D-ATKINSON J2 4/12/2002 0.264 0.01 0.05

BakerH WWK-D-BAKER H 12/14/2001 0.339 0.01 0.05

DRL-D-BAKERH 6/23/2004 0.377 0.01 0.05

DRL-D-BAKER H 9/15/2004 0.558 0.01 0.05

DRL-D-BAKER H-DUP 9/15/2004 0.605 0.01 0.05

DRL-D-BAKER H 12/2/2004 0.677 0.65 0.01 0.05

DRL-D-BAKER H-DUP 12/2/2004 0.721 0.693 0.01 0.05

DRL-D-BAKER H 1/21/2005 0.287 0.276 0.01 0.05DRL-D-BAKER H 4/22/2005 0.346 0.333 0.01 0.05DRL-D-BAKER H 7/12/2005 0.289 0.278 0.0015 0.0073DRL-D-BAKER H 10/14/2005 0.462 0.444 0.0022 0.011

CraftS LTL-D-16727 8/30/2005 0.0512 0.0492 0.0015 0.0073

DeuleyPE LCL-D-1014971 12/30/2004 0.0622 0.0597 0.01 0.05

GatesKC WWK-D-1018224 1/12/2006 0.0677 0.065 0.002 0.01

GrimmR WWK-D-GRIMM R 12/11/2001 <0.05 0.01 0.05

MooreR DRL-D-11645 12/22/2004 0.119 0.114 0.01 0.05

NayJL WWK-D-NAY JL 3/19/2002 0.465 0.01 0.05

LCL-D-NAY JL 12/2/2004 0.676 0.649 0.01 0.05LCL-D-NAY JL 1/21/2005 0.328 0.315 0.01 0.05LCL-D-NAY JL 4/20/2005 0.473 0.454 0.01 0.05LCL-D-NAY JL 7/12/2005 0.397 0.381 0.0015 0.0073LCL-D-NAY JL 10/11/2005 0.573 0.55 0.0022 0.011

2/3/10 Page 1 of 2 
Table 4.2

Residential GAC Systems, WV - Historic Data

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample Identification# Date APFO (ug/L)

*PFOA 

(ug/L) **LOD (ug/L) **LOQ (ug

NicholsonDH WWK-D-NICHOLSON DH 12/11/2001 0.0505 0.01 0.05

DRL-D-NICHOLSONDH 6/23/2004 0.143 0.01 0.05

DRL-D-NICHOLSON DH 9/16/2004 0.137 0.01 0.05DRL-D-NICHOLSON DH 12/2/2004 0.152 0.146 0.01 0.05DRL-D-NICHOLSON DH 1/27/2005 0.085 0.0817 0.01 0.05DRL-D-NICHOLSON DH 4/20/2005 0.146 0.14 0.01 0.05DRL-D-NICHOLSON DH 7/18/2005 0.0958 0.0921 0.0015 0.0073DRL-D-NICHOLSON DH 10/14/2005 0.144 0.138 0.0022 0.011

ParkerJL WWK-D-PARKER JL 12/10/2001 0.177 0.01 0.05

RoushE WWK-D-16761 10/4/2005 0.0952 0.0914 0.0007 0.0035

Rt1Box14 WWK-D-CHRISTMAN 12/21/2001 0.328 0.01 0.05

WWK-D-CHRISTMAN S 4/11/2002 0.526 0.01 0.05

SmithG LCL-D-15698 2/4/2005 0.475 0.456 0.01 0.05

SummersA DRL-D-11651 12/21/2004 0.0565 0.0543 0.01 0.05

SweseyJW DRL-D-1011126 12/22/2004 0.0761 0.0731 0.01 0.05

VincentS WWK-D-VINCENT S 12/17/2001 1.11 0.01 0.05

WWK-D-VINCENT S 4/11/2002 1.36 0.01 0.05

WilcoxA WWK-D-WILCOX A 1/28/2002 1.72 0.01 0.05

WWK-D-WILCOX A 4/11/2002 1.74 0.01 0.05

WinansJ LCL-D-16749 9/2/2005 2.41 2.31 0.015 0.073

#Sample nomenclature may not be consistent over time. However, all samples have been checked to verify that they are from the same location.*Both PFOA and APFO were reported starting with the 4Q04 sampling events.**Starting in July 2005, Limit of Detection (LOD) and Limit of Quantitiation (LOQ) were determined on at least a qubasis using the signal to noise determination described in the Phase II QAPP.NQ = Not quantifiable. Detected at a concentration above the LOD and below the LOQ.

2/3/10 Page 2 of 2 
Table 4.3

Residential Treatment Results, West Virginia - GAC System Samples

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER# DATESMPL APFO (ug/L) *PFOA (ug/L) **LOD 

AbbottRL WWK-D-ABBOTTRL-PT 9/10/2009 0.035 0.034 0.0026 

WWK-D-ABBOTTRL-BED1 9/10/2009 <0.0026 <0.0026 0.0026 WWK-D-ABBOTTRL-BED1 6/11/2009 <0.0026 <0.0026 0.0026 WWK-D-ABBOTTRL-BED1 3/17/2009 <0.0026 <0.0026 0.0026 WWK-D-ABBOTTRL-BED1 11/24/2008 <0.0017 <0.0017 0.0017 

WWK-D-ABBOTTRL-PT 9/3/2008 0.034 0.033 0.0023 

WWK-D-ABBOTTRL-BED1 9/3/2008 <0.0023 <0.0023 0.0023 WWK-D-ABBOTTRL-BED1 6/24/2008 <0.0023 <0.0023 0.0023 WWK-D-ABBOTTRL-BED1 3/3/2008 <0.0022 <0.0022 0.0022 WWK-D-ABBOTTRL-BED1 11/27/2007 <0.0031 <0.0031 0.0031 

WWK-D-ABBOTTRL-PT 8/20/2007 0.015 0.015 0.0012 

WWK-D-ABBOTTRL-BED1 8/20/2007 NQ NQ 0.0012 WWK-D-ABBOTTRL-BED2 8/20/2007 <0.0012 <0.0012 0.0012 WWK-D-ABBOTTRL-BED1 6/11/2007 <0.0027 <0.0027 0.0027 WWK-D-ABBOTTRL-BED1 2/21/2007 <0.0010 <0.0010 0.0010 WWK-D-ABBOTTRL-BED1 10/31/2006 <0.0018 <0.0018 0.0018 WWK-D-ABBOTTRL-BED1 8/9/2006 <0.0016 <0.0016 0.0016 

WWK-D-ABBOTTRL-PT 5/10/2006 0.0303 0.0291 0.0012 

WWK-D-ABBOTTRL-BED1 5/10/2006 <0.0012 <0.0012 0.0012 

AbbottS WWK-D-ABBOTTS-PT 9/11/2009 0.29 0.28 0.0026 

WWK-D-ABBOTTS-BED1 9/11/2009 <0.0026 <0.0026 0.0026 WWK-D-ABBOTTS-BED1 6/12/2009 <0.0026 <0.0026 0.0026 WWK-D-ABBOTTS-BED1 3/27/2009 <0.0026 <0.0026 0.0026 WWK-D-ABBOTTS-BED1 12/19/2008 <0.0017 <0.0017 0.0017 

WWK-D-ABBOTTS-PT 9/25/2008 0.28 0.27 0.0017 

WWK-D-ABBOTTS-BED1 9/25/2008 <0.0017 <0.0017 0.0017 WWK-D-ABBOTTS-BED1 6/28/2008 <0.0023 <0.0023 0.0023 WWK-D-ABBOTTS-BED1 3/21/2008 <0.0019 <0.0019 0.0019 WWK-D-ABBOTTS-BED1 12/15/2007 <0.0031 <0.0031 0.0031 

WWK-D-ABBOTTS-PT 8/31/2007 0.28 0.27 0.0012 

WWK-D-ABBOTTS-BED1 8/31/2007 <0.0012 <0.0012 0.0012 WWK-D-ABBOTTS-BED1 6/15/2007 <0.0027 <0.0027 0.0027 WWK-D-ABBOTTS-BED1 2/21/2007 <0.0010 <0.0010 0.0010 WWK-D-ABBOTTS-BED1 11/1/2006 <0.0018 <0.0018 0.0018 WWK-D-ABBOTTS-BED1 8/9/2006 <0.0016 <0.0016 0.0016 

WWK-D-ABBOTTLW-PT 5/10/2006 0.47 0.452 0.0012 

2/3/10 Page 1 of 11 
Table 4.3

Residential Treatment Results, West Virginia - GAC System Samples

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER# DATESMPL APFO (ug/L) *PFOA (ug/L) **LOD 

WWK-D-ABBOTTLW-BED1 5/10/2006 <0.0012 <0.0012 0.0012 

AlkireM WWK-D-1556CLUBDR-PT 9/14/2009 1.9 1.8 0.026 

WWK-D-1556CLUBDR-BED1 9/14/2009 <0.0026 <0.0026 0.0026 WWK-D-1556CLUBDR-BED1 6/16/2009 <0.0026 <0.0026 0.0026 WWK-D-1556CLUBDR-BED1 3/18/2009 <0.0026 <0.0026 0.0026 WWK-D-1556CLUBDR-BED1 11/26/2008 <0.0017 <0.0017 0.0017 

WWK-D-1556CLUBDR-PT 9/3/2008 2.0 1.9 0.023 

WWK-D-1556CLUBDR-BED1 9/3/2008 <0.0023 <0.0023 0.0023 WWK-D-1556CLUBDR-BED1 6/30/2008 <0.0023 <0.0023 0.0023 

WWK-D-AHARTRE-PT 8/22/2007 1.4 1.3 0.012 

WWK-D-AHARTRE-BED1 8/22/2007 <0.0012 <0.0012 0.0012 WWK-D-AHARTRE-BED1 6/11/2007 <0.0027 <0.0027 0.0027 WWK-D-AHARTRE-BED1 2/27/2007 <0.0010 <0.0010 0.0010 WWK-D-AHARTRE-BED1 11/1/2006 <0.0018 <0.0018 0.0018 WWK-D-AHARTRE-BED1 8/10/2006 <0.0016 <0.0016 0.0016 

WWK-D-AHARTRE-PT 5/10/2006 2.09 2.01 0.012 

WWK-D-AHARTRE-BED1 5/10/2006 <0.0012 <0.0012 0.0012 

AtkinsonJR WWK-D-ATKINSONJR-PT 9/10/2009 0.32 0.31 0.0026 

WWK-D-ATKINSONJR-BED1 9/10/2009 <0.0026 <0.0026 0.0026 WWK-D-ATKINSONJR-BED1 6/11/2009 <0.0026 <0.0026 0.0026 WWK-D-ATKINSONJR-BED1 3/17/2009 <0.0026 <0.0026 0.0026 WWK-D-ATKINSONJR-BED1 11/24/2008 <0.0017 <0.0017 0.0017 

WWK-D-ATKINSONJR-PT 9/3/2008 0.36 0.35 0.0023 

WWK-D-ATKINSONJR-BED1 9/3/2008 <0.0023 <0.0023 0.0023 WWK-D-ATKINSONJR-BED1 6/24/2008 <0.0023 <0.0023 0.0023 WWK-D-ATKINSONJR-BED1 3/4/2008 <0.0022 <0.0022 0.0022 WWK-D-ATKINSONJR-BED1 11/27/2007 <0.0031 <0.0031 0.0031 

WWK-D-ATKINSONJR-PT 8/20/2007 0.23 0.22 0.0012 

WWK-D-ATKINSONJR-BED1 8/20/2007 <0.0012 <0.0012 0.0012 WWK-D-ATKINSONJR-BED1 6/11/2007 <0.0027 <0.0027 0.0027 WWK-D-ATKINSONJR-BED1 2/21/2007 <0.0010 <0.0010 0.0010 WWK-D-ATKINSONJR-BED1 11/1/2006 <0.0018 <0.0018 0.0018 

WWK-D-ATKINSONJR-PT 9/29/2006 0.21 0.20 0.0018 

WWK-D-ATKINSONJR-BED1 9/29/2006 <0.0018 <0.0018 0.0018 

2/3/10 Page 2 of 11 
Table 4.3

Residential Treatment Results, West Virginia - GAC System Samples

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER# DATESMPL APFO (ug/L) *PFOA (ug/L) **LOD 

BakerH WWK-D-BAKERH-PT 9/14/2009 0.33 0.32 0.0026 

WWK-D-BAKERH-BED1 9/14/2009 <0.0026 <0.0026 0.0026 WWK-D-BAKERH-BED1 3/17/2009 <0.0026 <0.0026 0.0026 WWK-D-BAKERH-BED1 11/24/2008 <0.0017 <0.0017 0.0017 

WWK-D-BAKERH-PT 9/3/2008 0.31 0.30 0.0023 

WWK-D-BAKERH-BED1 9/3/2008 <0.0023 <0.0023 0.0023 WWK-D-BAKERH-BED1 6/23/2008 <0.0023 <0.0023 0.0023 WWK-D-BAKERH-BED1 3/21/2008 <0.0019 <0.0019 0.0019 WWK-D-BAKERH-BED1 12/15/2007 <0.0031 <0.0031 0.0031 

WWK-D-BAKERH-PT 8/20/2007 0.25 0.24 0.0012 

WWK-D-BAKERH-BED1 8/20/2007 <0.0012 <0.0012 0.0012 WWK-D-BAKERH-BED1 6/12/2007 <0.0027 <0.0027 0.0027 WWK-D-BAKERH-BED1 3/1/2007 <0.0010 <0.0010 0.0010 WWK-D-BAKERH-BED1 10/31/2006 <0.0018 <0.0018 0.0018 WWK-D-BAKERH-BED1 8/9/2006 <0.0016 <0.0016 0.0016 

WWK-D-BAKERH-PT 6/29/2006 0.315 0.303 0.0026 

WWK-D-BAKERH-BED1 6/29/2006 <0.0026 <0.0026 0.0026 

CraftS WWK-D-CRAFTS-PT 9/10/2009 0.047 0.045 0.0026 

WWK-D-CRAFTS-BED1 9/10/2009 <0.0026 <0.0026 0.0026 WWK-D-CRAFTS-BED1 6/16/2009 NQ NQ 0.0026 WWK-D-CRAFTS-BED2 6/16/2009 <0.0026 <0.0026 0.0026 WWK-D-CRAFTS-BED1 3/19/2009 NQ NQ 0.0026 WWK-D-CRAFTS-BED2 3/19/2009 <0.0026 <0.0026 0.0026 WWK-D-CRAFTS-BED1 11/12/2008 <0.0017 <0.0017 0.0017 

WWK-D-CRAFTS-PT 9/16/2008 0.049 0.047 0.0023 

WWK-D-CRAFTS-BED1 9/16/2008 <0.0023 <0.0023 0.0023 WWK-D-CRAFTS-BED1 6/16/2008 <0.0019 <0.0019 0.0019 WWK-D-CRAFTS-BED1 3/25/2008 <0.0019 <0.0019 0.0019 WWK-D-CRAFTS-BED1 12/3/2007 <0.0031 <0.0031 0.0031 

WWK-D-CRAFTS-PT 8/23/2007 0.031 0.030 0.0012 

WWK-D-CRAFTS-BED1 8/23/2007 NQ NQ 0.0012 WWK-D-CRAFTS-BED2 8/23/2007 <0.0012 <0.0012 0.0012 WWK-D-CRAFTS-BED1 6/13/2007 <0.0027 <0.0027 0.0027 WWK-D-CRAFTS-BED1 2/28/2007 <0.0010 <0.0010 0.0010 WWK-D-CRAFTS-BED1 12/13/2006 <0.0018 <0.0018 0.0018 WWK-D-CRAFTS-BED1 8/11/2006 <0.0026 <0.0026 0.0026 

2/3/10 Page 3 of 11 
Table 4.3

Residential Treatment Results, West Virginia - GAC System Samples

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER# DATESMPL APFO (ug/L) *PFOA (ug/L) **LOD 

WWK-D-CRAFTS-PT 6/14/2006 0.0243 0.0233 0.0012 

WWK-D-CRAFTS-BED1 6/14/2006 <0.0012 <0.0012 0.0012 

DeuleyPE WWK-D-DEULEYPE-PT 9/14/2009 0.088 0.085 0.0026 

WWK-D-DEULEYPE-BED1 9/14/2009 <0.0026 <0.0026 0.0026 WWK-D-DEULEYPE-BED1 6/15/2009 <0.0026 <0.0026 0.0026 WWK-D-DEULEYPE-BED1 3/23/2009 <0.0043 <0.0043 0.0043 WWK-D-DEULEYPE-BED1 11/26/2008 <0.0017 <0.0017 0.0017 

WWK-D-DEULEYPE-PT 9/15/2008 0.098 0.094 0.0023 

WWK-D-DEULEYPE-BED1 9/15/2008 <0.0023 <0.0023 0.0023 WWK-D-DEULEYPE-BED1 6/24/2008 <0.0023 <0.0023 0.0023 WWK-D-DEULEYPE-BED1 3/24/2008 <0.0019 <0.0019 0.0019 WWK-D-DEULEYPE-BED1 12/15/2007 <0.0031 <0.0031 0.0031 

WWK-D-DEULEYPE-PT 8/30/2007 0.059 0.057 0.0012 

WWK-D-DEULEYPE-BED1 8/30/2007 <0.0012 <0.0012 0.0012 WWK-D-DEULEYPE-BED1 6/12/2007 <0.0027 <0.0027 0.0027 WWK-D-DEULEYPE-BED1 3/1/2007 <0.0010 <0.0010 0.0010 WWK-D-DEULEYPE-BED1 11/1/2006 <0.0018 <0.0018 0.0018 WWK-D-DEULEYPE-BED1 8/10/2006 <0.0016 <0.0016 0.0016 

WWK-D-DEULEYPE-PT 5/10/2006 0.0894 0.0859 0.0012 

WWK-D-DEULEYPE-BED1 5/10/2006 <0.0012 <0.0012 0.0012 

GatesKC WWK-D-GATESKC-PT 9/11/2009 0.039 0.037 0.0026 

WWK-D-GATESKC-BED1 9/11/2009 <0.0026 <0.0026 0.0026 WWK-D-GATESKC-BED1 6/12/2009 <0.0026 <0.0026 0.0026 WWK-D-GATESKC-BED1 3/17/2009 <0.0026 <0.0026 0.0026 WWK-D-GATESKC-BED1 11/24/2008 <0.0017 <0.0017 0.0017 

WWK-D-GATESKC-PT 9/3/2008 0.065 0.062 0.0023 

WWK-D-GATESKC-BED1 9/3/2008 <0.0023 <0.0023 0.0023 WWK-D-GATESKC-BED1 6/24/2008 <0.0023 <0.0023 0.0023 WWK-D-GATESKC-BED1 3/3/2008 <0.0022 <0.0022 0.0022 WWK-D-GATESKC-BED1 11/27/2007 <0.0031 <0.0031 0.0031 

WWK-D-GATESKC-PT 8/20/2007 0.044 0.043 0.0012 

WWK-D-GATESKC-BED1 8/20/2007 <0.0012 <0.0012 0.0012 WWK-D-GATESKC-BED1 6/11/2007 <0.0027 <0.0027 0.0027 WWK-D-GATESKC-BED1 2/27/2007 <0.0010 <0.0010 0.0010 WWK-D-GATESKC-BED1 10/31/2006 <0.0018 <0.0018 0.0018 WWK-D-GATESKC-BED1 8/8/2006 <0.0016 <0.0016 0.0016 

2/3/10 Page 4 of 11 
Table 4.3

Residential Treatment Results, West Virginia - GAC System Samples

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER# DATESMPL APFO (ug/L) *PFOA (ug/L) **LOD 

WWK-D-GATESKC-BED1-2 8/8/2006 <0.0016 <0.0016 0.0016 

WWK-D-GATESKC-PT 5/25/2006 0.0368 0.0354 0.0012 

WWK-D-GATESKC-PT-2 5/25/2006 0.0348 0.0334 0.0012 

WWK-D-GATESKC-BED1 5/25/2006 <0.0012 <0.0012 0.0012 

GrimmR WWK-D-GRIMMR-PT 9/10/2009 <0.0026 <0.0026 0.0026 

WWK-D-GRIMMR-BED1 9/10/2009 <0.0026 <0.0026 0.0026 WWK-D-GRIMMR-BED1 6/16/2009 <0.0026 <0.0026 0.0026 WWK-D-GRIMMR-BED1 3/19/2009 <0.0026 <0.0026 0.0026 WWK-D-GRIMMR-BED1 11/12/2008 <0.0017 <0.0017 0.0017 

WWK-D-GRIMMR-PT 9/16/2008 <0.0023 <0.0023 0.0023 

WWK-D-GRIMMR-BED1 9/16/2008 <0.0023 <0.0023 0.0023 WWK-D-GRIMMR-BED1 6/16/2008 <0.0019 <0.0019 0.0019 WWK-D-GRIMMR-BED1 3/7/2008 <0.0022 <0.0022 0.0022 WWK-D-GRIMMR-BED1 12/3/2007 <0.0031 <0.0031 0.0031 

WWK-D-GRIMMR-BED1-2 12/3/2007 <0.0031 <0.0031 0.0031 

WWK-D-GRIMMR-PT 8/23/2007 <0.0012 <0.0012 0.0012 

WWK-D-GRIMMR-BED1 8/23/2007 <0.0012 <0.0012 0.0012 WWK-D-GRIMMR-BED1 6/13/2007 <0.0027 <0.0027 0.0027 WWK-D-GRIMMR-BED1 2/28/2007 <0.0010 <0.0010 0.0010 WWK-D-GRIMMR-BED1 12/13/2006 <0.0018 <0.0018 0.0018 WWK-D-GRIMMR-BED1 8/11/2006 <0.0026 <0.0026 0.0026 

WWK-D-GRIMMRR-PT 5/18/2006 NQ NQ 0.0012 

WWK-D-GRIMMRR-BED1 5/18/2006 <0.0012 <0.0012 0.0012 

MooreR WWK-D-MOORER-PT 9/11/2009 0.10 0.097 0.0026 

WWK-D-MOORER-BED1 9/11/2009 <0.0026 <0.0026 0.0026 WWK-D-MOORER-BED1 6/12/2009 <0.0026 <0.0026 0.0026 WWK-D-MOORER-BED1 3/18/2009 <0.0026 <0.0026 0.0026 WWK-D-MOORER-BED1 11/24/2008 <0.0017 <0.0017 0.0017 

WWK-D-MOORER-PT 9/11/2008 0.10 0.098 0.0023 

WWK-D-MOORER-BED1 9/11/2008 <0.0023 <0.0023 0.0023 WWK-D-MOORER-BED1 6/23/2008 <0.0023 <0.0023 0.0023 WWK-D-MOORER-BED1 3/3/2008 <0.0022 <0.0022 0.0022 WWK-D-MOORER-BED1 11/29/2007 <0.0031 <0.0031 0.0031 

WWK-D-MOORER-PT 8/28/2007 0.036 0.035 0.0012 

WWK-D-MOORER-BED1 8/28/2007 <0.0012 <0.0012 0.0012 WWK-D-MOORER-BED1 6/11/2007 <0.0027 <0.0027 0.0027 

2/3/10 Page 5 of 11 
Table 4.3

Residential Treatment Results, West Virginia - GAC System Samples

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER# DATESMPL APFO (ug/L) *PFOA (ug/L) **LOD 

WWK-D-MOORER-BED1 2/28/2007 <0.0010 <0.0010 0.0010 WWK-D-MOORER-BED1 10/31/2006 <0.0018 <0.0018 0.0018 WWK-D-MOORER-BED1 8/9/2006 <0.0016 <0.0016 0.0016 

WWK-D-MOORER-PT 6/21/2006 0.113 0.108 0.0026 

WWK-D-MOORER-BED1 6/21/2006 <0.0026 <0.0026 0.0026 

NayJL WWK-D-NAYJL-PT 9/10/2009 0.84 0.81 0.0026 

WWK-D-NAYJL-BED1 9/10/2009 <0.0026 <0.0026 0.0026 WWK-D-NAYJL-BED1 6/16/2009 <0.0026 <0.0026 0.0026 WWK-D-NAYJL-BED1 3/18/2009 <0.0026 <0.0026 0.0026 WWK-D-NAYJL-BED1 11/26/2008 <0.0017 <0.0017 0.0017 

WWK-D-NAYJL-PT 9/11/2008 0.67 0.64 0.0023 

WWK-D-NAYJL-BED1 9/11/2008 <0.0023 <0.0023 0.0023 WWK-D-NAYJL-BED1 6/24/2008 <0.0023 <0.0023 0.0023 WWK-D-NAYJL-BED1 3/3/2008 <0.0022 <0.0022 0.0022 WWK-D-NAYJL-BED1 11/27/2007 <0.0031 <0.0031 0.0031 

WWK-D-NAYJL-PT 8/28/2007 0.61 0.59 0.0012 

WWK-D-NAYJL-BED1 8/28/2007 <0.0012 <0.0012 0.0012 WWK-D-NAYJL-BED1 6/12/2007 <0.0027 <0.0027 0.0027 WWK-D-NAYJL-BED1 3/1/2007 <0.0010 <0.0010 0.0010 WWK-D-NAYJL-BED1 10/31/2006 <0.0018 <0.0018 0.0018 WWK-D-NAYJL-BED1 8/9/2006 <0.0016 <0.0016 0.0016 

WWK-D-NAYJL-PT 5/10/2006 0.539 0.518 0.0012 

WWK-D-NAYJL-BED1 5/10/2006 <0.0012 <0.0012 0.0012 

NicholsonDH WWK-D-NICHOLSONDH-PT 9/10/2009 0.11 0.11 0.0026 

WWK-D-NICHOLSONDH-BED1 9/10/2009 <0.0026 <0.0026 0.0026 WWK-D-NICHOLSONDH-BED1 6/29/2009 <0.0026 <0.0026 0.0026 WWK-D-NICHOLSONDH-BED1 3/24/2009 <0.0026 <0.0026 0.0026 WWK-D-NICHOLSONDH-BED1 11/26/2008 <0.0017 <0.0017 0.0017 

WWK-D-NICHOLSONDH-PT 9/11/2008 0.099 0.095 0.0023 

WWK-D-NICHOLSONDH-BED1 9/11/2008 <0.0023 <0.0023 0.0023 WWK-D-NICHOLSONDH-BED1 6/28/2008 <0.0023 <0.0023 0.0023 WWK-D-NICHOLSONDH-BED1 3/24/2008 <0.0019 <0.0019 0.0019 WWK-D-NICHOLSONDH-BED1 11/29/2007 <0.0031 <0.0031 0.0031 

WWK-D-NICHOLSONDH-PT 9/5/2007 0.087 0.084 0.0012 

WWK-D-NICHOLSONDH-BED1 9/5/2007 <0.0012 <0.0012 0.0012 WWK-D-NICHOLSONDH-BED1 7/5/2007 <0.0012 <0.0012 0.0012 

2/3/10 Page 6 of 11 
Table 4.3

Residential Treatment Results, West Virginia - GAC System Samples

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER# DATESMPL APFO (ug/L) *PFOA (ug/L) **LOD 

WWK-D-NICHOLSONDH-BED1 6/12/2007 <0.0027 <0.0027 0.0027 WWK-D-NICHOLSONDH-BED1 5/14/2007 <0.0027 <0.0027 0.0027 WWK-D-NICHOLSONDH-BED1 4/5/2007 <0.0027 <0.0027 0.0027 WWK-D-NICHOLSONDH-BED1 3/1/2007 <0.0010 <0.0010 0.0010 WWK-D-NICHOLSONDH-BED1 12/22/2006 NQ NQ 0.0010 WWK-D-NICHOLSONDH-BED2 12/22/2006 NQ NQ 0.0010 WWK-D-NICHOLSONDH-BED1 8/8/2006 <0.0016 <0.0016 0.0016 

WWK-D-NICHOLSONDH-PT 5/10/2006 0.168 0.162 0.0012 

WWK-D-NICHOLSONDH-PT-2 5/10/2006 0.159 0.153 0.0012 

WWK-D-NICHOLSONDH-BED1 5/10/2006 <0.0012 <0.0012 0.0012 

ParkerJL WWK-D-PARKERJL-PT 9/11/2009 NQ NQ 0.0026 

WWK-D-PARKERJL-BED1 9/11/2009 <0.0026 <0.0026 0.0026 WWK-D-PARKERJL-BED1 6/11/2009 <0.0026 <0.0026 0.0026 WWK-D-PARKERJL-BED1 3/17/2009 <0.0026 <0.0026 0.0026 WWK-D-PARKERJL-BED1 11/24/2008 <0.0017 <0.0017 0.0017 

WWK-D-PARKERJL-PT 9/11/2008 0.029 0.028 0.0023 

WWK-D-PARKERJL-BED1 9/11/2008 <0.0023 <0.0023 0.0023 WWK-D-PARKERJL-BED1 6/23/2008 <0.0023 <0.0023 0.0023 WWK-D-PARKERJL-BED1 3/21/2008 <0.0019 <0.0019 0.0019 WWK-D-PARKERJL-BED1 11/29/2007 <0.0031 <0.0031 0.0031 

WWK-D-PARKERJL-PT 8/28/2007 0.034 0.033 0.0012 

WWK-D-PARKERJL-BED1 8/28/2007 <0.0012 <0.0012 0.0012 

WWK-D-PARKERA-BED1 6/12/2007 <0.0027 <0.0027 0.0027 

WWK-D-PARKERJL-BED1 3/8/2007 <0.0010 <0.0010 0.0010 WWK-D-PARKERJL-BED1 11/1/2006 <0.0018 <0.0018 0.0018 WWK-D-PARKERJL-BED1 8/9/2006 <0.0016 <0.0016 0.0016 

WWK-D-PARKERAR-PT 5/25/2006 0.0344 0.033 0.0012 

WWK-D-PARKERAR-BED1 5/25/2006 <0.0012 <0.0012 0.0012 

RoushE WWK-D-ROUSHE-PT 9/10/2009 0.20 0.19 0.0026 

WWK-D-ROUSHE-BED1 9/10/2009 <0.0026 <0.0026 0.0026 WWK-D-ROUSHE-BED1 6/16/2009 <0.0026 <0.0026 0.0026 WWK-D-ROUSHE-BED1 3/19/2009 <0.0026 <0.0026 0.0026 WWK-D-ROUSHE-BED1 11/12/2008 <0.0017 <0.0017 0.0017 

WWK-D-ROUSHE-PT 9/16/2008 0.18 0.17 0.0023 

WWK-D-ROUSHE-BED1 9/16/2008 <0.0023 <0.0023 0.0023 WWK-D-ROUSHE-BED1 6/16/2008 <0.0019 <0.0019 0.0019 

2/3/10 Page 7 of 11 
Table 4.3

Residential Treatment Results, West Virginia - GAC System Samples

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER# DATESMPL APFO (ug/L) *PFOA (ug/L) **LOD 

WWK-D-ROUSHE-BED1 3/7/2008 <0.0022 <0.0022 0.0022 WWK-D-ROUSHE-BED1 12/3/2007 <0.0031 <0.0031 0.0031 

WWK-D-ROUSHE-PT 8/23/2007 0.055 0.053 0.0012 

WWK-D-ROUSHE-BED1 8/23/2007 <0.0012 <0.0012 0.0012 WWK-D-ROUSHE-BED1 6/13/2007 <0.0027 <0.0027 0.0027 WWK-D-ROUSHE-BED1 2/28/2007 <0.0010 <0.0010 0.0010 WWK-D-ROUSHE-BED1 12/13/2006 <0.0018 <0.0018 0.0018 WWK-D-ROUSHE-BED1 8/11/2006 <0.0026 <0.0026 0.0026 

WWK-D-ROUSHE-PT 6/21/2006 0.0826 0.0794 0.0026 

WWK-D-ROUSHE-BED1 6/21/2006 <0.0026 <0.0026 0.0026 

Rt1Box14 WWK-D-RT1BOX14-BED1 12/7/2009 <0.0021 <0.0021 0.0021 

WWK-D-RT1BOX14-PT 9/14/2009 0.031 0.030 0.0026 

WWK-D-RT1BOX14-BED1 9/14/2009 <0.0026 <0.0026 0.0026 WWK-D-RT1BOX14-BED1 6/26/2009 <0.0026 <0.0026 0.0026 WWK-D-RT1BOX14-BED1 3/17/2009 <0.0026 <0.0026 0.0026 WWK-D-RT1BOX14-BED1 12/19/2008 <0.0017 <0.0017 0.0017 

WWK-D-RT1BOX14-PT 9/23/2008 0.064 0.061 0.0017 

WWK-D-RT1BOX14-BED1 9/23/2008 <0.0017 <0.0017 0.0017 WWK-D-RT1BOX14-BED1 6/28/2008 <0.0023 <0.0023 0.0023 WWK-D-RT1BOX14-BED1 3/27/2008 <0.0019 <0.0019 0.0019 WWK-D-RT1BOX14-BED1 12/29/2007 <0.0022 <0.0022 0.0022 

WWK-D-RT1BOX14-PT 8/30/2007 0.057 0.055 0.0012 

WWK-D-RT1BOX14-BED1 8/30/2007 <0.0012 <0.0012 0.0012 WWK-D-RT1BOX14-BED1 6/20/2007 <0.0012 <0.0012 0.0012 WWK-D-RT1BOX14-BED1 2/21/2007 <0.0010 <0.0010 0.0010 WWK-D-RT1BOX14-BED1 12/19/2006 <0.0018 <0.0018 0.0018 

WWK-D-RT1BOX14-PT 8/21/2006 0.056 0.054 0.0026 

WWK-D-RT1BOX14-BED1 8/21/2006 <0.0026 <0.0026 0.0026 

SmithG WWK-D-SMITHG-PT 9/11/2009 NQ NQ 0.0026 

WWK-D-SMITHG-BED1 9/11/2009 <0.0026 <0.0026 0.0026 WWK-D-SMITHG-BED1 6/11/2009 <0.0026 <0.0026 0.0026 WWK-D-SMITHG-BED1 3/23/2009 <0.0043 <0.0043 0.0043 WWK-D-SMITHG-BED1 11/24/2008 <0.0017 <0.0017 0.0017 

WWK-D-SMITHG-PT 9/19/2008 NQ NQ 0.0023 

WWK-D-SMITHG-PT-2 9/19/2008 NQ NQ 0.0023 

WWK-D-SMITHG-BED1 9/19/2008 <0.0023 <0.0023 0.0023 

2/3/10 Page 8 of 11 
Table 4.3

Residential Treatment Results, West Virginia - GAC System Samples

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER# DATESMPL APFO (ug/L) *PFOA (ug/L) **LOD 

WWK-D-SMITHG-BED1-2 9/19/2008 <0.0023 <0.0023 0.0023 

WWK-D-SMITHG-BED1 6/23/2008 <0.0023 <0.0023 0.0023 WWK-D-SMITHG-BED1 3/3/2008 <0.0022 <0.0022 0.0022 WWK-D-SMITHG-BED1 11/29/2007 <0.0031 <0.0031 0.0031 

WWK-D-SMITHG-PT 8/28/2007 NQ NQ 0.0012 

WWK-D-SMITHG-BED1 8/28/2007 <0.0012 <0.0012 0.0012 WWK-D-SMITHG-BED1 6/12/2007 <0.0027 <0.0027 0.0027 WWK-D-SMITHG-BED1 2/27/2007 <0.0010 <0.0010 0.0010 WWK-D-SMITHG-BED1 12/11/2006 <0.0018 <0.0018 0.0018 

WWK-D-SMITHG-PT 9/12/2006 NQ NQ 0.0026 

WWK-D-SMITHG-BED1 9/12/2006 <0.0026 <0.0026 0.0026 

SummersA WWK-D-SUMMERSA-PT 9/10/2009 0.015 0.014 0.0026 

WWK-D-SUMMERSA-BED1 9/10/2009 <0.0026 <0.0026 0.0026 WWK-D-SUMMERSA-BED1 6/11/2009 <0.0026 <0.0026 0.0026 WWK-D-SUMMERSA-BED1 3/17/2009 <0.0026 <0.0026 0.0026 WWK-D-SUMMERSA-BED1 11/24/2008 <0.0017 <0.0017 0.0017 

WWK-D-SUMMERSA-PT 9/3/2008 NQ NQ 0.0023 

WWK-D-SUMMERSA-BED1 9/3/2008 <0.0023 <0.0023 0.0023 WWK-D-SUMMERSA-BED1 6/24/2008 <0.0023 <0.0023 0.0023 WWK-D-SUMMERSA-BED1 3/3/2008 <0.0022 <0.0022 0.0022 WWK-D-SUMMERSA-BED1 12/15/2007 <0.0031 <0.0031 0.0031 

WWK-D-SUMMERSA-PT 8/20/2007 <0.0012 <0.0012 0.0012 

WWK-D-SUMMERSA-BED1 8/20/2007 <0.0012 <0.0012 0.0012 WWK-D-SUMMERSA-BED1 6/11/2007 <0.0027 <0.0027 0.0027 WWK-D-SUMMERSA-BED1 2/27/2007 <0.0010 <0.0010 0.0010 WWK-D-SUMMERSA-BED1 10/31/2006 <0.0018 <0.0018 0.0018 

WWK-D-SUMMERSA-BED1-2 10/31/2006 <0.0018 <0.0018 0.0018 

WWK-D-SUMMERSA-PT 8/8/2006 0.012 0.012 0.0016 

WWK-D-SUMMERSA-BED1 8/8/2006 <0.0016 <0.0016 0.0016 

SweseyJW WWK-D-SWESEYJW-PT 9/11/2009 0.052 0.050 0.0026 

WWK-D-SWESEYJW-BED1 9/11/2009 <0.0026 <0.0026 0.0026 WWK-D-SWESEYJW-BED1 6/11/2009 <0.0026 <0.0026 0.0026 WWK-D-SWESEYJW-BED1 3/18/2009 <0.0026 <0.0026 0.0026 

WWK-D-SWESEYJW-PT 10/22/2008 0.027 0.026 0.0017 

WWK-D-SWESEYJW-BED1 10/22/2008 <0.0017 <0.0017 0.0017 

WWK-D-SWESEYJW-PT 9/25/2008 <0.0017 <0.0017 0.0017 

2/3/10 Page 9 of 11 
Table 4.3

Residential Treatment Results, West Virginia - GAC System Samples

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER# DATESMPL APFO (ug/L) *PFOA (ug/L) **LOD 

WWK-D-SWESEYJW-BED1 9/25/2008 0.021 0.020 0.0017 WWK-D-SWESEYJW-BED2 9/25/2008 NQ NQ 0.0017 WWK-D-SWESEYJW-BED1 6/24/2008 <0.0023 <0.0023 0.0023 WWK-D-SWESEYJW-BED1 3/3/2008 <0.0022 <0.0022 0.0022 WWK-D-SWESEYJW-BED1 11/29/2007 <0.0031 <0.0031 0.0031 

WWK-D-SWESEYJW-PT 8/28/2007 0.016 0.015 0.0012 

WWK-D-SWESEYJW-BED1 8/28/2007 <0.0012 <0.0012 0.0012 WWK-D-SWESEYJW-BED1 6/11/2007 <0.0027 <0.0027 0.0027 WWK-D-SWESEYJW-BED1 2/28/2007 <0.0010 <0.0010 0.0010 WWK-D-SWESEYJW-BED1 11/1/2006 <0.0018 <0.0018 0.0018 WWK-D-SWESEYJW-BED1 8/9/2006 <0.0016 <0.0016 0.0016 

WWK-D-SWESEYJW-PT 5/10/2006 0.0397 0.0382 0.0012 

WWK-D-SWESEYJW-BED1 5/10/2006 <0.0012 <0.0012 0.0012 

VincentS WWK-D-VINCENTS-PT 9/10/2009 2.5 2.4 0.026 

WWK-D-VINCENTS-BED1 9/10/2009 <0.0026 <0.0026 0.0026 WWK-D-VINCENTS-BED1 6/16/2009 <0.0026 <0.0026 0.0026 WWK-D-VINCENTS-BED1 3/18/2009 <0.0026 <0.0026 0.0026 WWK-D-VINCENTS-BED1 11/24/2008 <0.0017 <0.0017 0.0017 

WWK-D-VINCENTS-PT 9/3/2008 2.1 2.0 0.023 

WWK-D-VINCENTS-BED1 9/3/2008 <0.0023 <0.0023 0.0023 WWK-D-VINCENTS-BED1 6/24/2008 <0.0023 <0.0023 0.0023 WWK-D-VINCENTS-BED1 3/3/2008 <0.0022 <0.0022 0.0022 WWK-D-VINCENTS-BED1 11/29/2007 <0.0031 <0.0031 0.0031 

WWK-D-VINCENTS-BED1-2 11/29/2007 <0.0031 <0.0031 0.0031 

WWK-D-VINCENTS-PT 8/20/2007 1.9 1.8 0.012 

WWK-D-VINCENTS-BED1 8/20/2007 <0.0012 <0.0012 0.0012 WWK-D-VINCENTS-BED1 6/11/2007 <0.0027 <0.0027 0.0027 WWK-D-VINCENTS-BED1 3/1/2007 <0.0010 <0.0010 0.0010 WWK-D-VINCENTS-BED1 10/31/2006 <0.0018 <0.0018 0.0018 WWK-D-VINCENTS-BED1 8/9/2006 <0.0016 <0.0016 0.0016 

WWK-D-VINCENTSA-PT 5/10/2006 2.66 2.55 0.012 

WWK-D-VINCENTSA-BED1 5/10/2006 <0.0012 <0.0012 0.0012 

WilcoxA WWK-D-WILCOXA-PT 9/10/2009 1.5 1.4 0.026 

WWK-D-WILCOXA-BED1 9/10/2009 <0.0026 <0.0026 0.0026 WWK-D-WILCOXA-BED1 6/16/2009 <0.0026 <0.0026 0.0026 WWK-D-WILCOXA-BED1 3/18/2009 <0.0026 <0.0026 0.0026 

2/3/10 Page 10 of 11 
Table 4.3

Residential Treatment Results, West Virginia - GAC System Samples

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER# DATESMPL APFO (ug/L) *PFOA (ug/L) **LOD 

WWK-D-WILCOXA-BED1 11/24/2008 <0.0017 <0.0017 0.0017 

WWK-D-WILCOXA-PT 9/3/2008 1.4 1.3 0.023 

WWK-D-WILCOXA-BED1 9/3/2008 NQ NQ 0.0023 WWK-D-WILCOXA-BED2 9/3/2008 NQ NQ 0.0023 WWK-D-WILCOXA-BED1 6/24/2008 <0.0023 <0.0023 0.0023 WWK-D-WILCOXA-BED1 3/3/2008 <0.0022 <0.0022 0.0022 WWK-D-WILCOXA-BED1 11/29/2007 <0.0031 <0.0031 0.0031 

WWK-D-WILCOXA-PT 8/22/2007 1.5 1.4 0.012 

WWK-D-WILCOXA-BED1 8/22/2007 NQ NQ 0.0012 WWK-D-WILCOXA-BED2 8/22/2007 <0.0012 <0.0012 0.0012 WWK-D-WILCOXA-BED1 6/11/2007 <0.0027 <0.0027 0.0027 

WWK-D-WILCOXA-BED1-2 6/11/2007 <0.0027 <0.0027 0.0027 

WWK-D-WILCOXA-BED1 3/7/2007 <0.0010 <0.0010 0.0010 WWK-D-WILCOXA-BED1 10/31/2006 <0.0018 <0.0018 0.0018 WWK-D-WILCOXA-BED1 8/10/2006 <0.0016 <0.0016 0.0016 

WWK-D-WILCOXA-PT 6/21/2006 1.39 1.33 0.012 

WWK-D-WILCOXA-BED1 6/21/2006 <0.0012 <0.0012 0.0012 

WinansJ^ WWK-D-WINANSJ-PT 9/22/2009 1.9 1.8 0.033 

WWK-D-WINANSJ-BED1 9/22/2009 <0.0033 <0.0033 0.0033 WWK-D-WINANSJ-BED1 6/18/2009 <0.0026 <0.0026 0.0026 

WWK-D-WINANSJ-PT 7/17/2008 1.6 1.5 0.023 

WWK-D-WINANSJ-BED1 7/17/2008 <0.0023 <0.0023 0.0023 

WWK-D-WINANSJ-PT 9/4/2007 0.77 0.74 0.0012 

WWK-D-WINANSJ-BED1 9/4/2007 <0.0012 <0.0012 0.0012 WWK-D-WINANSJ-BED1 6/12/2007 <0.0027 <0.0027 0.0027 WWK-D-WINANSJ-BED1 11/16/2006 <0.0018 <0.0018 0.0018 WWK-D-WINANSJ-BED1 8/21/2006 <0.0026 <0.0026 0.0026 

WWK-D-WINANSJ-PT 6/19/2006 1.64 1.57 0.012 

WWK-D-WINANSJ-BED1 6/19/2006 <0.0012 <0.0012 0.0012 

#Sample nomenclature may not be consistent over time. However, all samples have been checked to verify ththey are from the same location.*Both PFOA and APFO were reported starting with the 4Q04 sampling events.**Starting in July 2005, Limit of Detection (LOD) and Limit of Quantitiation (LOQ) were determined on at least a basis using the signal to noise determination described in the Phase II QAPP. NQ = Not quantifiable. Detected at a concentration above the LOD and below the LOQ.^Well is winterized and no samples are taken during the winter months

2/3/10 Page 11 of 11 
Table 4.4

Residential GAC Systems, Ohio - Historic Data

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample Identification# Date

APFO 

(ug/L)

*PFOA 

(ug/L)

**LOD 

(ug/L)

2341StSr124 WWO-D-WALTON DM 6/26/2002 0.413 0.01 2500WelchRD WWO-D-1009222 10/20/2005 0.445 0.428 0.0022 

AnkromCA WWO-D-ANKROM CA 7/9/2002 0.0586 0.01 

BellJ WWO-D-16802 11/29/2005 0.57 0.548 0.0042 BiseMA WWO-D-16789 11/17/2005 0.166 0.16 0.0041 

BoringAE WWO-D-BORING AE 6/26/2002 1.15 0.01 BosoFE WWO-D-BOSO-FE 7/25/2002 0.29 0.01 BowersockVK WWO-D-BOWERSTOCK VK 8/14/2002 0.0825 0.01 BrewerPS WWO-D-16812 1/10/2006 0.304 0.292 0.0012 BuchananAF WWO-D-BUCHANAN AF 7/25/2002 0.755 0.01 BurtonCE WWO-D-16756 10/3/2005 0.967 0.927 0.0028 CollinsRL WWK-D-COLLINS RL 3/22/2002 0.224 0.01 DickeyD WWO-D-1009340 11/17/2005 0.706 0.678 0.0041 DuganS WWO-D-100019 7/13/2005 0.153 0.147 0.0015 DunfeeBL WWO-D-16774 10/20/2005 0.886 0.851 0.0022 DurstCK WWO-D-15582 1/14/2005 0.226 0.217 0.01 GivensDL WWK-D-GIVENS DL 5/22/2002 0.416 0.01 GoudyRA WWO-D-1009852 11/4/2005 0.0961 0.0925 0.0022 HarrahGC WWO-D-HARRAH GC 6/26/2002 0.844 0.01 HornbeckKL WWK-D-HORNBECK LK 4/1/2002 0.237 0.01 KetelsonD WWO-D-KETELSON D 9/11/2002 0.0915 0.01 KnottsC WWO-D-KNOTTS C 9/10/2002 2.59 0.01 LewisR WWO-D-LEWIS B 7/13/2005 1.2 1.15 0.015 MathenyTL WWK-D-MATHENY TL 4/1/2002 0.195 0.01 MummaE WWO-D-11997 1/5/2005 0.201 0.193 0.01 NewlunM WWO-D-100044 1/10/2006 0.348 0.334 0.0012 OursS WWO-D-16782 11/17/2005 0.15 0.144 0.0041 

2/3/10 Page 1 of 3 
Table 4.4

Residential GAC Systems, Ohio - Historic Data

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample Identification# Date

APFO 

(ug/L)

*PFOA 

(ug/L)

**LOD 

(ug/L)

ParsonsCF WWO-D-PARSONS CF 2/21/2006 14.5 13.9 0.23 

WWO-D-PARSONS CF-2 2/21/2006 14 13.4 0.23 WWO-D-PARSONSCF 10/12/2005 17.6 16.9 0.08 WWO-D-PARSONS CF 7/13/2005 9.34 8.97 0.15 WWO-D-PARSONS CF-2 7/13/2005 8.81 8.46 0.15 WWO-D-PARSONS CF 4/21/2005 12.3 11.8 0.01 WWO-D-PARSONS CF 1/20/2005 11.3 10.9 0.01 WWO-D-PARSONS CF 11/30/2004 23 22.1 0.01 WWO-D-PARSONS CF 9/13/2004 15.7 0.01 WWO-D-PARSONSCF 6/24/2004 13 0.01 WWO-D-PARSONSCF-DUP 6/24/2004 12.8 0.01 WWK-D-PARSONS CF 4/8/2002 8.59 0.01 

PriceFL WWO-D-9572 12/22/2004 0.942 0.904 0.01 

WWK-D-PRICE FL 3/22/2002 0.802 0.01 

Riggins1833 WWO-D-11975 12/30/2004 0.134 0.129 0.01 Riggins1922 WWO-D-16803 1/11/2006 0.47 0.451 0.0012 RumerJH WWO-D-RUMER JH 3/14/2006 1.05 1.01 0.023 

WWO-D-RUMERJH 10/12/2005 1.1 1.06 0.04 WWO-D-RUMER JH 7/13/2005 0.668 0.642 0.015 WWO-D-RUMER JH 4/21/2005 0.724 0.695 0.01 WWO-D-RUMER JH 1/20/2005 0.524 0.503 0.01 WWO-D-RUMER JH 11/29/2004 1.47 1.41 0.01 WWO-D-RUMER JH 9/13/2004 1.19 0.01 WWO-D-RUMERJH 6/24/2004 0.751 0.01 WWK-D-RUMER JH 3/21/2002 3.91 0.01 

RyanSP WWK-D-RYAN SP 3/21/2002 0.0962 0.01 SmithTJ WWO-D-16767 10/14/2005 0.466 0.448 0.0034 SwainPH WWK-D-SWAIN PH 3/21/2002 0.203 0.01 ThornberryW WWO-D-1009505 10/20/2005 0.25 0.24 0.0022 

WWO-D-1009505-2 10/20/2005 0.25 0.24 0.0022 

WebbOL WWO-D-WEBB D 9/25/2002 0.128 0.01 WeiglyG WWO-D-1008255 12/23/2004 0.228 0.219 0.01 Wheaton2610 WWO-D-WHEATON CA 8/21/2002 (<0.05) 0.01 

2/3/10 Page 2 of 3 
Table 4.4

Residential GAC Systems, Ohio - Historic Data

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Location Sample Identification# Date

APFO 

(ug/L)

*PFOA 

(ug/L)

**LOD 

(ug/L)

WhiteheadE WWO-D-1005451 1/10/2006 0.456 0.438 0.0012 WilsonRM1 WWO-D-WILSON RM1 7/31/2002 2.04 0.01 #Sample nomenclature may not be consistent over time. However, all samples have been checked to verify ththey are from the same location.*Both PFOA and APFO were reported starting with the 4Q04 sampling events.**Starting in July 2005, Limit of Detection (LOD) and Limit of Quantitiation (LOQ) were determined on at least a basis using the signal to noise determination described in the Phase II QAPP.

2/3/10 Page 3 of 3 
Table 4.5

Residential Treatment Results, Ohio - GAC System Samples

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER# DATESMPL APFO (ug/L) PFOA (ug/L) *LOD 

2341StRt124^ WWO-D-2341STRT124-BED1 12/8/2009 <0.0033 <0.0033 0.0033 

WWO-D-2341STRT124-PT 8/25/2009 1.7 1.6 0.026 

WWO-D-2341STRT124-BED1 8/25/2009 <0.0026 <0.0026 0.0026 WWO-D-2341STRT124-BED1 6/3/2009 <0.0026 <0.0026 0.0026 WWO-D-2341STRT124-BED1 2/16/2009 <0.0026 <0.0026 0.0026 WWO-D-2341STRT124-BED1 12/17/2008 <0.0017 <0.0017 0.0017 

WWO-D-2341STRT124-PT 9/4/2008 1.0 1.0 0.023 

WWO-D-2341STRT124-BED1 9/4/2008 <0.0023 <0.0023 0.0023 WWO-D-2341STRT124-BED1 6/4/2008 <0.0019 <0.0019 0.0019 WWO-D-2341STRT124-BED1 2/12/2008 <0.0022 <0.0022 0.0022 WWO-D-2341STRT124-BED1 11/20/2007 <0.0031 <0.0031 0.0031 

WWO-D-2341STRT124-PT 8/14/2007 1.1 1.1 0.012 

WWO-D-2341STRT124-BED1 8/14/2007 <0.0012 <0.0012 0.0012 

WWO-D-WALTONDM-BED1 5/18/2007 <0.0027 <0.0027 0.0027 WWO-D-WALTONDM-BED1 11/3/2006 <0.0018 <0.0018 0.0018 WWO-D-WALTONDM-BED1 8/8/2006 <0.0016 <0.0016 0.0016 

WWO-D-WALTONDM-PT 7/17/2006 0.278 0.267 0.0026 

WWO-D-WALTONDM-BED1 7/17/2006 <0.0026 <0.0026 0.0026 

WWO-D-WALTONDM-PT 6/22/2006 <0.0026 <0.0026 0.0026 

WWO-D-WALTONDM-BED1 6/22/2006 NQ NQ 0.0026 

2500WelchRd WWO-D-2500WELCHRD-PT 9/24/2009 0.83 0.80 0.0033 

WWO-D-2500WELCHRD-BED1 9/24/2009 <0.0033 <0.0033 0.0033 WWO-D-2500WELCHRD-BED1 6/4/2009 <0.0026 <0.0026 0.0026 WWO-D-2500WELCHRD-BED1 3/5/2009 <0.0026 <0.0026 0.0026 WWO-D-2500WELCHRD-BED1 12/8/2008 <0.0017 <0.0017 0.0017 

WWO-D-2500WELCHRD-PT 9/26/2008 0.69 0.66 0.0017 

WWO-D-2500WELCHRD-BED1 9/26/2008 <0.0017 <0.0017 0.0017 WWO-D-2500WELCHRD-BED1 6/5/2008 <0.0019 <0.0019 0.0019 WWO-D-2500WELCHRD-BED1 2/26/2008 <0.0022 <0.0022 0.0022 WWO-D-2500WELCHRD-BED1 11/26/2007 <0.0031 <0.0031 0.0031 

WWO-D-2500WELCHRD-PT 8/9/2007 0.48 0.46 0.0012 

WWO-D-2500WELCHRD-BED1 8/9/2007 <0.0012 <0.0012 0.0012 

WWO-D-2500WELCHRD-BED1 5/25/2007 <0.0027 <0.0027 0.0027 WWO-D-2500WELCHRD-BED1 2/22/2007 <0.0010 <0.0010 0.0010 WWO-D-2500WELCHRD-BED1 12/12/2006 <0.0018 <0.0018 0.0018 

WWO-D-2500WELCHRD-PT 8/22/2006 0.42 0.40 0.0026 

WWO-D-2500WELCHRD-BED1 8/22/2006 <0.0026 <0.0026 0.0026 

AnkromCA WWO-D-ANKROMCA-BED1 12/8/2009 <0.0033 <0.0033 0.0033 

WWO-D-ANKROMCA-PT 9/11/2009 0.12 0.12 0.0026 

WWO-D-ANKROMCA-BED1 9/11/2009 <0.0026 <0.0026 0.0026 

2/3/10 Page 1 of 22 
Table 4.5

Residential Treatment Results, Ohio - GAC System Samples

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER# DATESMPL APFO (ug/L) PFOA (ug/L) *LOD 

WWO-D-ANKROMCA-BED1 6/5/2009 <0.0026 <0.0026 0.0026 WWO-D-ANKROMCA-BED1 3/18/2009 <0.0026 <0.0026 0.0026 WWO-D-ANKROMCA-BED1 12/9/2008 <0.0017 <0.0017 0.0017 

WWO-D-ANKROMCA-PT 9/9/2008 0.12 0.12 0.0023 

WWO-D-ANKROMCA-BED1 9/9/2008 <0.0023 <0.0023 0.0023 WWO-D-ANKROMCA-BED1 6/4/2008 <0.0019 <0.0019 0.0019 WWO-D-ANKROMCA-BED1 2/14/2008 <0.0022 <0.0022 0.0022 WWO-D-ANKROMCA-BED1 11/19/2007 <0.0031 <0.0031 0.0031 

WWO-D-ANKROMCA-PT 8/8/2007 0.075 0.072 0.0012 

WWO-D-ANKROMCA-BED1 8/8/2007 <0.0012 <0.0012 0.0012 WWO-D-ANKROMCA-BED1 5/25/2007 <0.0027 <0.0027 0.0027 WWO-D-ANKROMCA-BED1 2/16/2007 <0.0010 <0.0010 0.0010 WWO-D-ANKROMCA-BED1 12/8/2006 <0.0018 <0.0018 0.0018 

WWO-D-ANKROMCA-BED1-2 12/8/2006 <0.0018 <0.0018 0.0018 

WWO-D-ANKROMCA-PT 8/21/2006 0.042 0.040 0.0026 

WWO-D-ANKROMCA-BED1 8/21/2006 <0.0026 <0.0026 0.0026 

BellJ WWO-D-BELLJ-BED1 11/2/2009 <0.0033 <0.0033 0.0033 

WWO-D-BELLJ-PT 8/25/2009 0.74 0.71 0.0026 

WWO-D-BELLJ-BED1 8/25/2009 <0.0026 <0.0026 0.0026 WWO-D-BELLJ-BED1 6/4/2009 <0.0026 <0.0026 0.0026 WWO-D-BELLJ-BED1 2/17/2009 <0.0026 <0.0026 0.0026 WWO-D-BELLJ-BED1 12/8/2008 <0.0017 <0.0017 0.0017 

WWO-D-BELLJ-PT 7/18/2008 0.67 0.64 0.023 

WWO-D-BELLJ-BED1 7/18/2008 <0.0023 <0.0023 0.0023 WWO-D-BELLJ-BED1 6/5/2008 NQ NQ 0.0019 WWO-D-BELLJ-BED2 6/5/2008 1.0 1.0 0.0019 WWO-D-BELLJ-BED1 2/26/2008 <0.0022 <0.0022 0.0022 WWO-D-BELLJ-BED1 11/19/2007 <0.0031 <0.0031 0.0031 

WWO-D-BELLJ-PT 8/9/2007 1.1 1.1 0.012 

WWO-D-BELLJ-BED1 8/9/2007 <0.0012 <0.0012 0.0012 WWO-D-BELLJ-BED1 5/24/2007 <0.0027 <0.0027 0.0027 WWO-D-BELLJ-BED1 12/6/2006 <0.0018 <0.0018 0.0018 

WWO-D-BELLJ-PT 8/15/2006 0.67 0.64 0.0026 

WWO-D-BELLJ-BED1 8/15/2006 <0.0026 <0.0026 0.0026 

BiseMA@ WWO-D-BISEMA-PT 8/15/2007 0.085 0.082 0.0012 

WWO-D-BISEMA-BED1 8/15/2007 <0.0012 <0.0012 0.0012 WWO-D-BISEMA-BED1 5/30/2007 <0.0027 <0.0027 0.0027 WWO-D-BISEMA-BED1 2/23/2007 <0.0010 <0.0010 0.0010 WWO-D-BISEMA-BED1 12/7/2006 <0.0018 <0.0018 0.0018 WWO-D-BISEMA-BED1 8/16/2006 <0.0026 <0.0026 0.0026 

2/3/10 Page 2 of 22 
Table 4.5

Residential Treatment Results, Ohio - GAC System Samples

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER# DATESMPL APFO (ug/L) PFOA (ug/L) *LOD 

WWO-D-BISEMA-PT 5/24/2006 0.0871 0.0837 0.0012 

WWO-D-BISEMA-BED1 5/24/2006 <0.0012 <0.0012 0.0012 

BoringAE WWO-D-BORINGAE-BED1 12/8/2009 <0.0033 <0.0033 0.0033 

WWO-D-BORINGAE-PT 9/23/2009 2.0 1.9 0.033 

WWO-D-BORINGAE-BED1 9/23/2009 <0.0033 <0.0033 0.0033 WWO-D-BORINGAE-BED1 6/3/2009 <0.0026 <0.0026 0.0026 WWO-D-BORINGAE-BED1 2/16/2009 <0.0026 <0.0026 0.0026 WWO-D-BORINGAE-BED1 12/17/2008 <0.0017 <0.0017 0.0017 

WWO-D-BORINGAE-PT 9/4/2008 1.5 1.4 0.023 

WWO-D-BORINGAE-BED1 9/4/2008 <0.0023 <0.0023 0.0023 WWO-D-BORINGAE-BED1 6/4/2008 <0.0019 <0.0019 0.0019 WWO-D-BORINGAE-BED1 2/12/2008 <0.0022 <0.0022 0.0022 WWO-D-BORINGAE-BED1 11/20/2007 <0.0031 <0.0031 0.0031 

WWO-D-BORINGAE-PT 8/14/2007 1.7 1.6 0.012 

WWO-D-BORINGAE-BED1 8/14/2007 <0.0012 <0.0012 0.0012 WWO-D-BORINGAE-BED1 5/18/2007 <0.0027 <0.0027 0.0027 WWO-D-BORINGAE-BED1 2/22/2007 <0.0010 <0.0010 0.0010 

WWO-D-BORINGAE-BED1-2 2/22/2007 <0.0010 <0.0010 0.0010 

WWO-D-BORINGAE-BED1 12/6/2006 <0.0018 <0.0018 0.0018 WWO-D-BORINGAE-BED1 8/8/2006 <0.0016 <0.0016 0.0016 

WWO-D-BORINGAE-PT 5/11/2006 2.42 2.32 0.012 

WWO-D-BORINGAE-BED1 5/11/2006 <0.0012 <0.0012 0.0012 

BosoFE WWO-D-BOSOFE-PT 8/31/2009 1.0 1.0 0.026 

WWO-D-BOSOFE-BED1 8/31/2009 <0.0026 <0.0026 0.0026 WWO-D-BOSOFE-BED1 6/3/2009 <0.0026 <0.0026 0.0026 WWO-D-BOSOFE-BED1 2/16/2009 <0.0026 <0.0026 0.0026 WWO-D-BOSOFE-BED1 12/8/2008 <0.0017 <0.0017 0.0017 

WWO-D-BOSOFE-PT 9/4/2008 0.78 0.75 0.0023 

WWO-D-BOSOFE-BED1 9/4/2008 <0.0023 <0.0023 0.0023 WWO-D-BOSOFE-BED1 6/4/2008 NQ NQ 0.0019 WWO-D-BOSOFE-BED2 6/4/2008 <0.0019 <0.0019 0.0019 WWO-D-BOSOFE-BED1 2/12/2008 <0.0022 <0.0022 0.0022 WWO-D-BOSOFE-BED1 11/19/2007 <0.0031 <0.0031 0.0031 

WWO-D-BOSOFE-BED1-2 11/19/2007 <0.0031 <0.0031 0.0031 

WWO-D-BOSOFE-PT 8/16/2007 0.81 0.78 0.0012 

WWO-D-BOSOFE-BED1 8/16/2007 <0.0012 <0.0012 0.0012 WWO-D-BOSOFE-BED1 5/16/2007 <0.0027 <0.0027 0.0027 WWO-D-BOSOFE-BED1 2/12/2007 <0.0010 <0.0010 0.0010 WWO-D-BOSOFE-BED1 12/6/2006 <0.0018 <0.0018 0.0018 WWO-D-BOSOFE-BED1 8/10/2006 <0.0016 <0.0016 0.0016 

2/3/10 Page 3 of 22 
Table 4.5

Residential Treatment Results, Ohio - GAC System Samples

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER# DATESMPL APFO (ug/L) PFOA (ug/L) *LOD 

WWO-D-BOSOFE-PT 5/15/2006 0.789 0.758 0.00098 

WWO-D-BOSOFE-PT-2 5/15/2006 0.852 0.818 0.00098 

WWO-D-BOSOFE-BED1 5/15/2006 <0.00098 <0.00098 0.00098 

BowersockVK WWO-D-BOWERSOCKVK-BED1 12/1/2009 <0.0021 <0.0021 0.0021 

WWO-D-BOWERSOCKVK-PT 7/29/2009 0.21 0.20 0.0026 

WWO-D-BOWERSOCKVK-BED1 7/29/2009 <0.0026 <0.0026 0.0026 WWO-D-BOWERSOCKVK-BED1 5/7/2009 <0.0026 <0.0026 0.0026 WWO-D-BOWERSOCKVK-BED1 2/12/2009 <0.0026 <0.0026 0.0026 

WWO-D-BOWERSOCKVK-BED1-2 2/12/2009 <0.0026 <0.0026 0.0026 

WWO-D-BOWERSOCKVK-BED1 11/11/2008 <0.0017 <0.0017 0.0017 

WWO-D-BOWERSOCKVK-PT 9/2/2008 0.16 0.15 0.0023 

WWO-D-BOWERSOCKVK-BED1 9/2/2008 <0.0023 <0.0023 0.0023 WWO-D-BOWERSOCKVK-BED1 4/8/2008 <0.0019 <0.0019 0.0019 WWO-D-BOWERSOCKVK-BED1 2/4/2008 <0.0022 <0.0022 0.0022 WWO-D-BOWERSOCKVK-BED1 11/1/2007 <0.0031 <0.0031 0.0031 

WWO-D-BOWERSOCKVK-PT 7/24/2007 0.2 0.19 0.0012 

WWO-D-BOWERSOCKVK-BED1 7/24/2007 NQ NQ 0.0012 WWO-D-BOWERSOCKVK-BED2 7/24/2007 NQ NQ 0.0012 WWO-D-BOWERSOCKVK-BED1 5/9/2007 <0.0027 <0.0027 0.0027 WWO-D-BOWERSOCKVK-BED1 2/1/2007 <0.0010 <0.0010 0.0010 WWO-D-BOWERSOCKVK-BED1 11/2/2006 NQ NQ 0.0018 WWO-D-BOWERSOCKVK-BED2 11/2/2006 <0.0018 <0.0018 0.0018 WWO-D-BOWERSOCKVK-BED1 8/17/2006 <0.0026 <0.0026 0.0026 

WWO-D-BOWERSOCKVK-BED1-2 8/17/2006 <0.0026 <0.0026 0.0026 

WWO-D-BOWERSOCKVK-PT 5/16/2006 0.207 0.199 0.0012 

WWO-D-BOWERSOCKVK-BED1 5/16/2006 <0.0012 <0.0012 0.0012 

BrewerPS WWO-D-BREWERPS-PT 9/1/2009 0.14 0.13 0.0026 

WWO-D-BREWERPS-BED1 9/1/2009 <0.0026 <0.0026 0.0026 WWO-D-BREWERPS-BED1 6/10/2009 <0.0026 <0.0026 0.0026 WWO-D-BREWERPS-BED1 3/24/2009 <0.0026 <0.0026 0.0026 

WWO-D-BREWERPS-PT 9/10/2008 0.19 0.18 0.0023 

WWO-D-BREWERPS-BED1 9/10/2008 <0.0023 <0.0023 0.0023 WWO-D-BREWERPS-BED1 5/28/2008 <0.0019 <0.0019 0.0019 WWO-D-BREWERPS-BED1 3/26/2008 <0.0019 <0.0019 0.0019 WWO-D-BREWERPS-BED1 12/4/2007 <0.0031 <0.0031 0.0031 

WWO-D-BREWERPR-PT 8/15/2007 0.24 0.23 0.0012 

WWO-D-BREWERPS-BED1 8/15/2007 <0.0012 <0.0012 0.0012 WWO-D-BREWERPS-BED1 5/30/2007 <0.0027 <0.0027 0.0027 WWO-D-BREWERPS-BED1 2/23/2007 <0.0010 <0.0010 0.0010 WWO-D-BREWERPS-BED1 12/7/2006 <0.0018 <0.0018 0.0018 

2/3/10 Page 4 of 22 
Table 4.5

Residential Treatment Results, Ohio - GAC System Samples

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER# DATESMPL APFO (ug/L) PFOA (ug/L) *LOD 

WWO-D-BREWERPS-BED1 8/16/2006 <0.0026 <0.0026 0.0026 

WWO-D-BREWERPS-PT 6/20/2006 0.244 0.234 0.0012 

WWO-D-BREWERPS-BED1 6/20/2006 <0.0012 <0.0012 0.0012 

BuchananAF WWO-D-BUCHANANAF-PT 8/31/2009 1.7 1.6 0.026 

WWO-D-BUCHANANAF-BED1 8/31/2009 <0.0026 <0.0026 0.0026 WWO-D-BUCHANANAF-BED1 6/3/2009 <0.0026 <0.0026 0.0026 WWO-D-BUCHANANAF-BED1 2/16/2009 <0.0026 <0.0026 0.0026 WWO-D-BUCHANANAF-BED1 12/8/2008 <0.0017 <0.0017 0.0017 

WWO-D-BUCHANANAF-PT 9/4/2008 1.6 1.5 0.023 

WWO-D-BUCHANANAF-BED1 9/4/2008 <0.0023 <0.0023 0.0023 WWO-D-BUCHANANAF-BED1 6/19/2008 <0.0019 <0.0019 0.0019 WWO-D-BUCHANANAF-BED1 2/12/2008 <0.0022 <0.0022 0.0022 WWO-D-BUCHANANAF-BED1 11/19/2007 <0.0031 <0.0031 0.0031 

WWO-D-BUCHANONAF-PT 8/8/2007 1.8 1.7 0.012 

WWO-D-BUCHANONAF-BED1 8/8/2007 <0.0012 <0.0012 0.0012 

WWO-D-BUCHANANAF-BED1 5/17/2007 <0.0027 <0.0027 0.0027 WWO-D-BUCHANANAF-BED1 2/16/2007 <0.0010 <0.0010 0.0010 WWO-D-BUCHANANAF-BED1 12/6/2006 <0.0018 <0.0018 0.0018 WWO-D-BUCHANANAF-BED1 8/10/2006 <0.0016 <0.0016 0.0016 

WWO-D-BUCHANONAF-PT 5/15/2006 2.4 2.3 0.0098 

WWO-D-BUCHANONAF-BED1 5/15/2006 <0.00098 <0.00098 0.00098 

BurtonCE WWO-D-BURTONCE-BED1 12/8/2009 <0.0033 <0.0033 0.0033 

WWO-D-BURTONCE-PT 8/31/2009 0.83 0.80 0.0026 

WWO-D-BURTONCE-BED1 8/31/2009 <0.0026 <0.0026 0.0026 WWO-D-BURTONCE-BED1 6/10/2009 <0.0026 <0.0026 0.0026 WWO-D-BURTONCE-BED1 3/5/2009 <0.0026 <0.0026 0.0026 WWO-D-BURTONCE-BED1 12/1/2008 <0.0017 <0.0017 0.0017 

WWO-D-BURTONCE-PT 9/10/2008 0.82 0.79 0.0023 

WWO-D-BURTONCE-BED1 9/10/2008 0.042 0.040 0.0023 WWO-D-BURTONCE-BED2 9/10/2008 <0.0023 <0.0023 0.0023 WWO-D-BURTONCE-BED1 6/5/2008 NQ NQ 0.0019 WWO-D-BURTONCE-BED2 6/5/2008 <0.0019 <0.0019 0.0019 WWO-D-BURTONCE-BED1 2/26/2008 <0.0022 <0.0022 0.0022 WWO-D-BURTONCE-BED1 11/30/2007 <0.0031 <0.0031 0.0031 

WWO-D-BURTONCE-PT 8/13/2007 0.91 0.87 0.0012 

WWO-D-BURTONCE-BED1 8/13/2007 <0.0012 <0.0012 0.0012 WWO-D-BURTONCE-BED1 5/25/2007 <0.0027 <0.0027 0.0027 WWO-D-BURTONCE-BED1 2/20/2007 <0.0010 <0.0010 0.0010 WWO-D-BURTONCE-BED1 1/17/2007 NQ NQ 0.0010 WWO-D-BURTONCE-BED2 1/17/2007 <0.0010 <0.0010 0.0010 

2/3/10 Page 5 of 22 
Table 4.5

Residential Treatment Results, Ohio - GAC System Samples

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER# DATESMPL APFO (ug/L) PFOA (ug/L) *LOD 

WWO-D-BURTONCE-BED1 12/15/2006 <0.0018 <0.0018 0.0018 WWO-D-BURTONCE-BED1 11/6/2006 <0.0018 <0.0018 0.0018 WWO-D-BURTONCE-BED1 10/11/2006 <0.0018 <0.0018 0.0018 WWO-D-BURTONCE-BED1 9/6/2006 <0.0026 <0.0026 0.0026 WWO-D-BURTONCE-BED1 8/10/2006 0.018 0.017 0.0016 WWO-D-BURTONCE-BED2 8/10/2006 <0.0026 <0.0026 0.0026 WWO-D-BURTONCE-BED1 7/7/2006 NQ NQ 0.0026 WWO-D-BURTONCE-BED2 7/7/2006 <0.0026 <0.0026 0.0026 

WWO-D-BURTONCE-PT 5/24/2006 0.897 0.861 0.0012 

WWO-D-BURTONCE-BED1 5/24/2006 NQ NQ 0.0012 WWO-D-BURTONCE-BED2 5/24/2006 <0.0012 <0.0012 0.0012 

CollinsRL WWO-D-COLLINSRL-BED1 12/2/2009 <0.0021 <0.0021 0.0021 

WWO-D-COLLINSRL-PT 8/10/2009 0.55 0.53 0.0026 

WWO-D-COLLINSRL-BED1 8/10/2009 NQ NQ 0.0026 WWO-D-COLLINSRL-BED2 8/10/2009 <0.0026 <0.0026 0.0026 WWO-D-COLLINSRL-BED1 5/7/2009 <0.0026 <0.0026 0.0026 WWO-D-COLLINSRL-BED1 2/9/2009 <0.0026 <0.0026 0.0026 WWO-D-COLLINSRL-BED1 11/11/2008 NQ NQ 0.0017 WWO-D-COLLINSRL-BED2 11/11/2008 <0.0017 <0.0017 0.0017 

WWO-D-COLLINSRL-PT 7/31/2008 0.40 0.38 0.0023 

WWO-D-COLLINSRL-BED1 7/31/2008 <0.0023 <0.0023 0.0023 WWO-D-COLLINSRL-BED1 4/8/2008 <0.0019 <0.0019 0.0019 WWO-D-COLLINSRL-BED1 2/4/2008 NQ NQ 0.0022 WWO-D-COLLINSRL-BED2 2/4/2008 NQ NQ 0.0022 WWO-D-COLLINSRL-BED1 11/1/2007 <0.0031 <0.0031 0.0031 

WWO-D-COLLINSRL-PT 7/20/2007 0.43 0.41 0.0012 

WWO-D-COLLINSRL-BED1 7/20/2007 <0.0012 <0.0012 0.0012 WWO-D-COLLINSRL-BED1 6/13/2007 <0.0027 <0.0027 0.0027 WWO-D-COLLINSRL-BED1 5/9/2007 <0.0027 <0.0027 0.0027 WWO-D-COLLINSRL-BED1 4/25/2007 <0.0027 <0.0027 0.0027 WWO-D-COLLINSRL-BED1 3/29/2007 <0.0027 <0.0027 0.0027 WWO-D-COLLINSRL-BED1 2/20/2007 NQ NQ 0.0010 WWO-D-COLLINSRL-BED2 2/20/2007 NQ NQ 0.0010 WWO-D-COLLINSRL-BED1 1/31/2007 NQ NQ 0.0010 WWO-D-COLLINSRL-BED2 1/31/2007 NQ NQ 0.0010 WWO-D-COLLINSRL-BED1 11/2/2006 NQ NQ 0.0018 WWO-D-COLLINSRL-BED2 11/2/2006 <0.0018 <0.0018 0.0018 WWO-D-COLLINSRL-BED1 8/15/2006 NQ NQ 0.0026 WWO-D-COLLINSRL-BED2 8/15/2006 <0.0026 <0.0026 0.0026 

WWO-D-COLLINSRL-PT 5/12/2006 0.439 0.421 0.0012 

2/3/10 Page 6 of 22 
Table 4.5

Residential Treatment Results, Ohio - GAC System Samples

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER# DATESMPL APFO (ug/L) PFOA (ug/L) *LOD 

WWO-D-COLLINSRL-BED1 5/12/2006 <0.0012 <0.0012 0.0012 

DickeyD WWO-D-DICKEYD-BED1 12/7/2009 <0.0033 <0.0033 0.0033 

WWO-D-DICKEYD-PT 8/25/2009 0.87 0.84 0.0026 

WWO-D-DICKEYD-BED1 8/25/2009 <0.0026 <0.0026 0.0026 WWO-D-DICKEYD-BED1 6/4/2009 <0.0026 <0.0026 0.0026 WWO-D-DICKEYD-BED1 2/17/2009 <0.0026 <0.0026 0.0026 WWO-D-DICKEYD-BED1 12/8/2008 <0.0017 <0.0017 0.0017 

WWO-D-DICKEYD-PT 9/2/2008 0.49 0.47 0.0023 

WWO-D-DICKEYD-BED1 9/2/2008 <0.0023 <0.0023 0.0023 WWO-D-DICKEYD-BED1 6/4/2008 <0.0019 <0.0019 0.0019 WWO-D-DICKEYD-BED1 2/14/2008 <0.0022 <0.0022 0.0022 WWO-D-DICKEYD-BED1 11/20/2007 <0.0031 <0.0031 0.0031 

WWO-D-DICKEYD-PT 8/9/2007 0.59 0.57 0.0012 

WWO-D-DICKEYD-BED1 8/9/2007 <0.0012 <0.0012 0.0012 WWO-D-DICKEYD-BED1 5/24/2007 <0.0027 <0.0027 0.0027 WWO-D-DICKEYD-BED1 2/19/2007 <0.0010 <0.0010 0.0010 WWO-D-DICKEYD-BED1 12/11/2006 <0.0018 <0.0018 0.0018 

WWO-D-DICKEYD-PT 8/24/2006 0.64 0.61 0.0026 

WWO-D-DICKEYD-BED1 8/24/2006 <0.0026 <0.0026 0.0026 

DuganS WWO-D-DUGANS-BED1 12/1/2009 NQ NQ 0.0021 

WWO-D-DUGANS-BED2 12/1/2009 <0.0021 <0.0021 0.0021 

WWO-D-DUGANS-PT 7/29/2009 0.30 0.29 0.0026 

WWO-D-DUGANS-BED1 7/29/2009 <0.0026 <0.0026 0.0026 WWO-D-DUGANS-BED1 5/5/2009 NQ NQ 0.0026 WWO-D-DUGANS-BED2 5/5/2009 NQ NQ 0.0026 WWO-D-DUGANS-BED1 2/9/2009 <0.0026 <0.0026 0.0026 WWO-D-DUGANS-BED1 11/11/2008 <0.0017 <0.0017 0.0017 

WWO-D-DUGANS-PT 7/31/2008 0.21 0.20 0.0023 

WWO-D-DUGANS-BED1 7/31/2008 <0.0023 <0.0023 0.0023 WWO-D-DUGANS-BED1 4/8/2008 NQ NQ 0.0019 WWO-D-DUGANS-BED2 4/8/2008 <0.0019 <0.0019 0.0019 WWO-D-DUGANS-BED1 2/4/2008 <0.0022 <0.0022 0.0022 WWO-D-DUGANS-BED1 11/1/2007 <0.0031 <0.0031 0.0031 

WWO-D-DUGANS-PT 7/25/2007 0.26 0.25 0.0012 

WWO-D-DUGANS-BED1 7/25/2007 NQ NQ 0.0012 WWO-D-DUGANS-BED2 7/25/2007 NQ NQ 0.0012 WWO-D-DUGANS-BED1 5/9/2007 <0.0027 <0.0027 0.0027 WWO-D-DUGANS-BED1 2/1/2007 <0.0010 <0.0010 0.0010 WWO-D-DUGANS-BED1 10/30/2006 <0.0018 <0.0018 0.0018 

WWO-D-DUGANS-PT 9/5/2006 0.30 0.29 0.0026 

2/3/10 Page 7 of 22 
Table 4.5

Residential Treatment Results, Ohio - GAC System Samples

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER# DATESMPL APFO (ug/L) PFOA (ug/L) *LOD 

WWO-D-DUGANS-BED1 9/5/2006 <0.0026 <0.0026 0.0026 

DunfeeBL WWO-D-DUNFEEBL-PT 9/24/2009 0.85 0.82 0.0033 

WWO-D-DUNFEEBL-BED1 9/24/2009 <0.0033 <0.0033 0.0033 WWO-D-DUNFEEBL-BED1 6/17/2009 <0.0026 <0.0026 0.0026 WWO-D-DUNFEEBL-BED1 3/20/2009 <0.0026 <0.0026 0.0026 WWO-D-DUNFEEBL-BED1 12/18/2008 NQ NQ 0.0017 WWO-D-DUNFEEBL-BED2 12/18/2008 <0.0026 <0.0026 0.0026 

WWO-D-DUNFEEBL-PT 9/19/2008 0.71 0.68 0.0017 

WWO-D-DUNFEEBL-BED1 9/19/2008 NQ NQ 0.0017 WWO-D-DUNFEEBL-BED2 9/19/2008 <0.0017 <0.0017 0.0017 WWO-D-DUNFEEBL-BED1 6/19/2008 <0.0019 <0.0019 0.0019 WWO-D-DUNFEEBL-BED1 3/4/2008 <0.0022 <0.0022 0.0022 WWO-D-DUNFEEBL-BED1 11/27/2007 NQ NQ 0.0031 WWO-D-DUNFEEBL-BED2 11/27/2007 <0.0031 <0.0031 0.0031 

WWO-D-DUNFEEBL-PT 8/14/2007 0.37 0.36 0.0012 

WWO-D-DUNFEEBL-BED1 8/14/2007 <0.0012 <0.0012 0.0012 WWO-D-DUNFEEBL-BED1 5/31/2007 <0.0027 <0.0027 0.0027 WWO-D-DUNFEEBL-BED1 2/22/2007 <0.0010 <0.0010 0.0010 WWO-D-DUNFEEBL-BED1 10/26/2006 <0.0018 <0.0018 0.0018 WWO-D-DUNFEEBL-BED1 8/21/2006 <0.0026 <0.0026 0.0026 

WWO-D-DUNFEEBL-BED1-2 8/21/2006 <0.0026 <0.0026 0.0026 

WWO-D-DUNFEEBL-PT 5/24/2006 0.577 0.555 0.0012 

WWO-D-DUNFEEBL-BED1 5/24/2006 <0.0012 <0.0012 0.0012 

DurstCK WWO-D-DURSTCK-PT 9/1/2009 0.076 0.073 0.0026 

WWO-D-DURSTCK-BED1 9/1/2009 <0.0026 <0.0026 0.0026 WWO-D-DURSTCK-BED1 6/10/2009 <0.0026 <0.0026 0.0026 WWO-D-DURSTCK-BED1 3/4/2009 <0.0026 <0.0026 0.0026 WWO-D-DURSTCK-BED1 12/11/2008 <0.0017 <0.0017 0.0017 

WWO-D-DURSTCK-PT 9/10/2008 0.082 0.079 0.0023 

WWO-D-DURSTCK-BED1 9/10/2008 <0.0023 <0.0023 0.0023 WWO-D-DURSTCK-BED1 5/28/2008 <0.0019 <0.0019 0.0019 WWO-D-DURSTCK-BED1 2/26/2008 <0.0022 <0.0022 0.0022 WWO-D-DURSTCK-BED1 12/4/2007 <0.0031 <0.0031 0.0031 

WWO-D-DURSTCK-PT 8/15/2007 0.1 0.098 0.0012 

WWO-D-DURSTCK-BED1 8/15/2007 <0.0012 <0.0012 0.0012 WWO-D-DURSTCK-BED1 5/30/2007 <0.0027 <0.0027 0.0027 WWO-D-DURSTCK-BED1 2/23/2007 <0.0010 <0.0010 0.0010 WWO-D-DURSTCK-BED1 12/7/2006 <0.0018 <0.0018 0.0018 WWO-D-DURSTCK-BED1 8/16/2006 <0.0026 <0.0026 0.0026 

WWO-D-DURSTCK-PT 5/24/2006 0.161 0.155 0.0012 

2/3/10 Page 8 of 22 
Table 4.5

Residential Treatment Results, Ohio - GAC System Samples

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER# DATESMPL APFO (ug/L) PFOA (ug/L) *LOD 

WWO-D-DURSTCK-BED1 5/24/2006 <0.0012 <0.0012 0.0012 

GivensDL WWO-D-GIVENSDL-BED1 12/1/2009 <0.0021 <0.0021 0.0021 

WWO-D-GIVENSDL-PT 8/10/2009 0.91 0.87 0.0026 

WWO-D-GIVENSDL-BED1 8/10/2009 <0.0026 <0.0026 0.0026 WWO-D-GIVENSDL-BED1 5/8/2009 <0.0026 <0.0026 0.0026 WWO-D-GIVENSDL-BED1 2/9/2009 <0.0026 <0.0026 0.0026 WWO-D-GIVENSDL-BED1 11/11/2008 <0.0017 <0.0017 0.0017 

WWO-D-GIVENSDL-PT 7/31/2008 0.55 0.53 0.0023 

WWO-D-GIVENSDL-BED1 7/31/2008 <0.0023 <0.0023 0.0023 WWO-D-GIVENSDL-BED1 4/8/2008 <0.0019 <0.0019 0.0019 WWO-D-GIVENSDL-BED1 2/4/2008 <0.0022 <0.0022 0.0022 WWO-D-GIVENSDL-BED1 11/1/2007 <0.0031 <0.0031 0.0031 

WWO-D-GIVENSDL-PT 7/26/2007 0.7 0.67 0.0012 

WWO-D-GIVENSDL-BED1 7/26/2007 <0.0012 <0.0012 0.0012 WWO-D-GIVENSDL-BED1 5/9/2007 <0.0027 <0.0027 0.0027 WWO-D-GIVENSDL-BED1 1/31/2007 <0.0010 <0.0010 0.0010 WWO-D-GIVENSDL-BED1 10/30/2006 <0.0018 <0.0018 0.0018 WWO-D-GIVENSDL-BED1 8/15/2006 <0.0026 <0.0026 0.0026 

WWO-D-GIVENSDL-PT 5/16/2006 0.63 0.605 0.0012 

WWO-D-GIVENSDL-PT-2 5/16/2006 0.626 0.602 0.0012 

WWO-D-GIVENSDL-BED1 5/16/2006 <0.0012 <0.0012 0.0012 

GoudyRA WWO-D-GOUDYRA-PT 9/23/2009 0.030 0.029 0.0033 

WWO-D-GOUDYRA-BED1 9/23/2009 <0.0033 <0.0033 0.0033 WWO-D-GOUDYRA-BED1 6/22/2009 <0.0026 <0.0026 0.0026 WWO-D-GOUDYRA-BED1 2/11/2009 <0.0026 <0.0026 0.0026 WWO-D-GOUDYRA-BED1 12/18/2008 <0.0017 <0.0017 0.0017 

WWO-D-GOUDYRA-PT 9/4/2008 0.030 0.029 0.0023 

WWO-D-GOUDYRA-BED1 9/4/2008 <0.0023 <0.0023 0.0023 WWO-D-GOUDYRA-BED1 6/5/2008 <0.0019 <0.0019 0.0019 WWO-D-GOUDYRA-BED1 2/5/2008 <0.0022 <0.0022 0.0022 WWO-D-GOUDYRA-BED1 11/12/2007 <0.0031 <0.0031 0.0031 

WWO-Z-GOUDYRA-PT 9/20/2007 0.030 0.029 0.0031 

WWO-Z-GOUDYRA-BED1 9/20/2007 <0.0031 <0.0031 0.0031 

WWO-D-GOUDYRA-BED1 6/18/2007 <0.0027 <0.0027 0.0027 WWO-D-GOUDYRA-BED1 2/2/2007 <0.0010 <0.0010 0.0010 WWO-D-GOUDYRA-BED1 11/2/2006 <0.0018 <0.0018 0.0018 WWO-D-GOUDYRA-BED1 8/17/2006 <0.0026 <0.0026 0.0026 

WWO-D-GOUDYRA-PT 5/15/2006 0.0578 0.0556 0.00098 

WWO-D-GOUDYRA-BED1 5/15/2006 <0.00098 <0.00098 0.00098 

HarrahGC WWO-D-HARRAHGC-PT 8/25/2009 2.1 2.0 0.026 

2/3/10 Page 9 of 22 
Table 4.5

Residential Treatment Results, Ohio - GAC System Samples

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER# DATESMPL APFO (ug/L) PFOA (ug/L) *LOD 

WWO-D-HARRAHGC-BED1 8/25/2009 <0.0026 <0.0026 0.0026 WWO-D-HARRAHGC-BED1 6/3/2009 <0.0026 <0.0026 0.0026 WWO-D-HARRAHGC-BED1 2/16/2009 <0.0026 <0.0026 0.0026 WWO-D-HARRAHGC-BED1 12/17/2008 <0.0017 <0.0017 0.0017 

WWO-D-HARRAHGC-PT 9/4/2008 1.4 1.3 0.023 

WWO-D-HARRAHGC-BED1 9/4/2008 <0.0023 <0.0023 0.0023 WWO-D-HARRAHGC-BED1 6/4/2008 NQ NQ 0.0019 WWO-D-HARRAHGC-BED2 6/4/2008 <0.0019 <0.0019 0.0019 WWO-D-HARRAHGC-BED1 3/10/2008 <0.0022 <0.0022 0.0022 WWO-D-HARRAHGC-BED1 11/20/2007 <0.0031 <0.0031 0.0031 

WWO-D-HARRAHGC-PT 8/8/2007 1.6 1.5 0.012 

WWO-D-HARRAHGC-BED1 8/8/2007 <0.0012 <0.0012 0.0012 WWO-D-HARRAHGC-BED1 5/21/2007 <0.0027 <0.0027 0.0027 WWO-D-HARRAHGC-BED1 3/26/2007 <0.0027 <0.0027 0.0027 WWO-D-HARRAHGC-BED1 12/7/2006 <0.0018 <0.0018 0.0018 WWO-D-HARRAHGC-BED1 8/10/2006 <0.0016 <0.0016 0.0016 

WWO-D-HARRAHGC-BED1-2 8/10/2006 <0.0016 <0.0016 0.0016 

WWO-D-HARRAHGC-PT 5/11/2006 2.07 1.99 0.012 

WWO-D-HARRAHGC-BED1 5/11/2006 <0.0012 <0.0012 0.0012 

HornbeckKL WWO-D-HORNBECKKL-BED1 12/1/2009 <0.0021 <0.0021 0.0021 

WWO-D-HORNBECKKL-PT 7/29/2009 1.5 1.4 0.026 

WWO-D-HORNBECKKL-BED1 7/29/2009 <0.0026 <0.0026 0.0026 WWO-D-HORNBECKKL-BED1 5/5/2009 <0.0026 <0.0026 0.0026 WWO-D-HORNBECKKL-BED1 2/10/2009 <0.0026 <0.0026 0.0026 WWO-D-HORNBECKKL-BED1 11/11/2008 NQ NQ 0.0017 WWO-D-HORNBECKKL-BED2 11/11/2008 NQ NQ 0.0017 

WWO-D-HORNBECKKL-PT 7/31/2008 0.93 0.89 0.0023 

WWO-D-HORNBECKKL-PT-2 7/31/2008 0.90 0.86 0.0023 

WWO-D-HORNBECKKL-BED1 7/31/2008 <0.0023 <0.0023 0.0023 

WWO-D-HORNBECKKL-BED1-2 7/31/2008 <0.0023 <0.0023 0.0023 

WWO-D-HORNBECKKL-BED1 4/8/2008 <0.0019 <0.0019 0.0019 WWO-D-HORNBECKKL-BED1 2/5/2008 <0.0022 <0.0022 0.0022 WWO-D-HORNBECKKL-BED1 11/1/2007 <0.0031 <0.0031 0.0031 

WWO-D-HORNBECKKL-PT 7/25/2007 0.96 0.92 0.012 

WWO-D-HORNBECKKL-BED1 7/25/2007 <0.0012 <0.0012 0.0012 WWO-D-HORNBECKKL-BED1 5/9/2007 <0.0027 <0.0027 0.0027 WWO-D-HORNBECKKL-BED1 1/31/2007 <0.0010 <0.0010 0.0010 WWO-D-HORNBECKKL-BED1 10/30/2006 <0.0018 <0.0018 0.0018 

WWO-D-HORNBECKKL-PT 8/15/2006 0.80 0.77 0.0026 

WWO-D-HORNBECKKL-BED1 8/15/2006 <0.0026 <0.0026 0.0026 

2/3/10 Page 10 of 22 
Table 4.5

Residential Treatment Results, Ohio - GAC System Samples

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER# DATESMPL APFO (ug/L) PFOA (ug/L) *LOD 

KetelsonD WWO-D-KETELSEND-BED1 12/1/2009 <0.0021 <0.0021 0.0021 

WWO-D-KETELSEND-PT 7/29/2009 0.22 0.21 0.0026 

WWO-D-KETELSEND-BED1 7/29/2009 <0.0026 <0.0026 0.0026 WWO-D-KETELSEND-BED1 5/5/2009 <0.0026 <0.0026 0.0026 WWO-D-KETELSEND-BED1 2/10/2009 <0.0026 <0.0026 0.0026 WWO-D-KETELSEND-BED1 11/11/2008 NQ NQ 0.0017 WWO-D-KETELSEND-BED2 11/11/2008 <0.0017 <0.0017 0.0017 

WWO-D-KETELSEND-PT 7/31/2008 0.18 0.17 0.0023 

WWO-D-KETELSEND-BED1 7/31/2008 NQ NQ 0.0023 WWO-D-KETELSEND-BED2 7/31/2008 <0.0023 <0.0023 0.0023 WWO-D-KETELSEND-BED1 4/8/2008 NQ NQ 0.0019 WWO-D-KETELSEND-BED2 4/8/2008 NQ NQ 0.0019 

WWO-D-KETELSOND-BED1 2/4/2008 NQ NQ 0.0022 WWO-D-KETELSOND-BED2 2/4/2008 NQ NQ 0.0022 WWO-D-KETELSOND-BED1 11/1/2007 NQ NQ 0.0031 WWO-D-KETELSOND-BED2 11/1/2007 NQ NQ 0.0031 

WWO-D-KETELSOND-PT 7/24/2007 0.24 0.23 0.0012 

WWO-D-KETELSOND-BED1 7/24/2007 NQ NQ 0.0012 WWO-D-KETELSOND-BED2 7/24/2007 NQ NQ 0.0012 WWO-D-KETELSOND-BED1 5/9/2007 NQ NQ 0.0027 WWO-D-KETELSOND-BED2 5/9/2007 <0.0027 <0.0027 0.0027 WWO-D-KETELSOND-BED1 1/31/2007 <0.0010 <0.0010 0.0010 WWO-D-KETELSOND-BED1 10/30/2006 NQ NQ 0.0018 WWO-D-KETELSOND-BED2 10/30/2006 <0.0018 <0.0018 0.0018 WWO-D-KETELSOND-BED1 8/17/2006 <0.0026 <0.0026 0.0026 

WWO-D-KETELSONDA-PT 5/24/2006 0.137 0.132 0.0012 

WWO-D-KETELSONDA-BED1 5/24/2006 <0.0012 <0.0012 0.0012 

KnottsC WWO-D-KNOTTSC-PT 12/1/2009 3.0 2.9 0.021 

WWO-D-KNOTTSC-BED1 12/1/2009 NQ NQ 0.0021 WWO-D-KNOTTSC-BED2 12/1/2009 NQ NQ 0.0021 WWO-D-KNOTTSC-BED1 6/25/2009 <0.0026 <0.0026 0.0026 WWO-D-KNOTTSC-BED1 3/5/2009 <0.0026 <0.0026 0.0026 WWO-D-KNOTTSC-BED1 12/16/2008 <0.0017 <0.0017 0.0017 

WWO-D-KNOTTSC-PT 9/23/2008 2.9 2.8 0.017 

WWO-D-KNOTTSC-BED1 9/23/2008 NQ NQ 0.0017 WWO-D-KNOTTSC-BED2 9/23/2008 NQ NQ 0.0017 WWO-D-KNOTTSC-BED1 6/17/2008 <0.0019 <0.0019 0.0019 WWO-D-KNOTTSC-BED1 2/25/2008 NQ NQ 0.0022 WWO-D-KNOTTSC-BED2 2/25/2008 <0.0022 <0.0022 0.0022 WWO-D-KNOTTSC-BED1 11/20/2007 NQ NQ 0.0031 

2/3/10 Page 11 of 22 
Table 4.5

Residential Treatment Results, Ohio - GAC System Samples

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER# DATESMPL APFO (ug/L) PFOA (ug/L) *LOD 

WWO-D-KNOTTSC-BED2 11/20/2007 <0.0031 <0.0031 0.0031 

WWO-D-KNOTTSC-PT 8/31/2007 2.6 2.5 0.012 

WWO-D-KNOTTSC-BED1 8/31/2007 NQ NQ 0.0012 WWO-D-KNOTTSC-BED2 8/31/2007 NQ NQ 0.0012 WWO-D-KNOTTSC-BED1 6/29/2007 NQ NQ 0.0012 WWO-D-KNOTTSC-BED2 6/29/2007 <0.0012 <0.0012 0.0012 WWO-D-KNOTTSC-BED1 5/30/2007 <0.0027 <0.0027 0.0027 WWO-D-KNOTTSC-BED1 4/25/2007 <0.0027 <0.0027 0.0027 WWO-D-KNOTTSC-BED1 3/29/2007 <0.0027 <0.0027 0.0027 

WWO-D-KNOTTSC-BED1-2 3/29/2007 <0.0027 <0.0027 0.0027 

WWO-D-KNOTTSC-BED1 2/16/2007 NQ NQ 0.0010 WWO-D-KNOTTSC-BED2 2/16/2007 NQ NQ 0.0010 WWO-D-KNOTTSC-BED1 12/22/2006 NQ NQ 0.0010 WWO-D-KNOTTSC-BED2 12/22/2006 NQ NQ 0.0010 WWO-D-KNOTTSC-BED1 8/24/2006 <0.0026 <0.0026 0.0026 

WWO-D-KNOTTSC-PT 6/14/2006 2.13 2.05 0.012 

WWO-D-KNOTTSC-BED1 6/14/2006 <0.0012 <0.0012 0.0012 

LewisR WWO-D-LEWISR-BED1 12/8/2009 <0.0033 <0.0033 0.0033 

WWO-D-LEWISR-PT 8/25/2009 2.2 2.1 0.026 

WWO-D-LEWISR-BED1 8/25/2009 <0.0026 <0.0026 0.0026 WWO-D-LEWISR-BED1 6/4/2009 <0.0026 <0.0026 0.0026 WWO-D-LEWISR-BED1 2/24/2009 <0.0026 <0.0026 0.0026 WWO-D-LEWISR-BED1 12/17/2008 NQ NQ 0.0017 WWO-D-LEWISR-BED2 12/17/2008 NQ NQ 0.0026 

WWO-D-LEWISR-PT 9/4/2008 1.5 1.4 0.023 

WWO-D-LEWISR-BED1 9/4/2008 NQ NQ 0.0023 WWO-D-LEWISR-BED1 6/20/2008 <0.0019 <0.0019 0.0019 WWO-D-LEWISR-BED1 2/14/2008 <0.0022 <0.0022 0.0022 WWO-D-LEWISR-BED1 11/20/2007 NQ NQ 0.0031 WWO-D-LEWISR-BED2 11/20/2007 NQ NQ 0.0031 

WWO-D-LEWISR-PT 8/9/2007 1.6 1.5 0.012 

WWO-D-LEWISR-BED1 8/9/2007 <0.0012 <0.0012 0.0012 WWO-D-LEWISR-BED1 5/24/2007 <0.0027 <0.0027 0.0027 WWO-D-LEWISR-BED1 2/16/2007 <0.0010 <0.0010 0.0010 WWO-D-LEWISR-BED1 1/18/2007 NQ NQ 0.0010 WWO-D-LEWISR-BED2 1/18/2007 <0.0010 <0.0010 0.0010 WWO-D-LEWISR-BED1 12/12/2006 <0.0018 <0.0018 0.0018 WWO-D-LEWISR-BED1 11/9/2006 <0.0018 <0.0018 0.0018 WWO-D-LEWISR-BED1 10/11/2006 <0.0018 <0.0018 0.0018 WWO-D-LEWISR-BED1 9/6/2006 <0.0026 <0.0026 0.0026 

2/3/10 Page 12 of 22 
Table 4.5

Residential Treatment Results, Ohio - GAC System Samples

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER# DATESMPL APFO (ug/L) PFOA (ug/L) *LOD 

WWO-D-LEWISR-BED1-2 9/6/2006 <0.0026 <0.0026 0.0026 

WWO-D-LEWISR-BED1 8/8/2006 <0.0016 <0.0016 0.0016 WWO-D-LEWISR-BED1 7/7/2006 <0.0026 <0.0026 0.0026 

WWO-D-LEWISR-PT 5/12/2006 1.63 1.57 0.012 

WWO-D-LEWISR-BED1 5/12/2006 NQ NQ 0.0012 WWO-D-LEWISR-BED2 5/12/2006 <0.0012 <0.0012 0.0012 

MathenyTL WWO-D-MATHENYTL-PT 9/24/2009 0.76 0.73 0.0033 

WWO-D-MATHENYTL-BED1 9/24/2009 <0.0033 <0.0033 0.0033 WWO-D-MATHENYTL-BED1 6/25/2009 <0.0026 <0.0026 0.0026 WWO-D-MATHENYTL-BED1 2/11/2009 NQ NQ 0.0026 WWO-D-MATHENYTL-BED2 2/11/2009 <0.0026 <0.0026 0.0026 WWO-D-MATHENYTL-BED1 11/11/2008 <0.0017 <0.0017 0.0017 

WWO-D-MATHENYTL-PT 9/3/2008 0.54 0.52 0.0023 

WWO-D-MATHENYTL-BED1 9/3/2008 <0.0023 <0.0023 0.0023 WWO-D-MATHENYTL-BED1 4/9/2008 <0.0019 <0.0019 0.0019 WWO-D-MATHENYTL-BED1 2/6/2008 <0.0022 <0.0022 0.0022 WWO-D-MATHENYTL-BED1 11/14/2007 <0.0031 <0.0031 0.0031 

WWO-D-MATHENYTL-PT 8/2/2007 0.62 0.60 0.0012 

WWO-D-MATHENYTL-BED1 8/2/2007 <0.0012 <0.0012 0.0012 WWO-D-MATHENYTL-BED1 5/15/2007 <0.0027 <0.0027 0.0027 WWO-D-MATHENYTL-BED1 1/31/2007 <0.0010 <0.0010 0.0010 WWO-D-MATHENYTL-BED1 11/2/2006 <0.0018 <0.0018 0.0018 

WWO-D-MATHENYTL-BED1-2 11/2/2006 <0.0018 <0.0018 0.0018 

WWO-D-MATHENYTL-BED1 8/15/2006 <0.0026 <0.0026 0.0026 

WWO-D-MATHENYTL-PT 5/16/2006 0.604 0.58 0.0012 

WWO-D-MATHENYTL-BED1 5/16/2006 <0.0012 <0.0012 0.0012 

MummaE WWO-D-MUMMAE-BED1 12/7/2009 <0.0033 <0.0033 0.0033 

WWO-D-MUMMAE-PT 8/25/2009 0.11 0.11 0.0026 

WWO-D-MUMMAE-BED1 8/25/2009 <0.0026 <0.0026 0.0026 WWO-D-MUMMAE-BED1 6/4/2009 <0.0026 <0.0026 0.0026 WWO-D-MUMMAE-BED1 2/17/2009 <0.0026 <0.0026 0.0026 WWO-D-MUMMAE-BED1 10/27/2008 <0.0017 <0.0017 0.0017 

WWO-D-MUMMAE-PT 7/21/2008 0.096 0.092 0.0023 

WWO-D-MUMMAE-BED1 7/21/2008 <0.0023 <0.0023 0.0023 WWO-D-MUMMAE-BED1 6/5/2008 <0.0019 <0.0019 0.0019 WWO-D-MUMMAE-BED1 2/26/2008 <0.0022 <0.0022 0.0022 WWO-D-MUMMAE-BED1 11/20/2007 <0.0031 <0.0031 0.0031 

WWO-D-MUMMAE-PT 8/9/2007 0.14 0.13 0.0012 

WWO-D-MUMMAE-BED1 8/9/2007 <0.0012 <0.0012 0.0012 WWO-D-MUMMAE-BED1 5/24/2007 <0.0027 <0.0027 0.0027 

2/3/10 Page 13 of 22 
Table 4.5

Residential Treatment Results, Ohio - GAC System Samples

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER# DATESMPL APFO (ug/L) PFOA (ug/L) *LOD 

WWO-D-MUMMAE-BED1-2 5/24/2007 <0.0027 <0.0027 0.0027 

WWO-D-MUMMAE-BED1 2/20/2007 <0.0010 <0.0010 0.0010 WWO-D-MUMMAE-BED1 12/8/2006 <0.0018 <0.0018 0.0018 

WWO-D-MUMMAE-PT 8/30/2006 0.20 0.19 0.0026 

WWO-D-MUMMAE-BED1 8/30/2006 <0.0026 <0.0026 0.0026 

NewlunM WWO-D-NEWLUNM-PT 9/1/2009 0.15 0.14 0.0026 

WWO-D-NEWLUNM-BED1 9/1/2009 <0.0026 <0.0026 0.0026 WWO-D-NEWLUNM-BED1 6/10/2009 <0.0026 <0.0026 0.0026 WWO-D-NEWLUNM-BED1 3/4/2009 <0.0026 <0.0026 0.0026 WWO-D-NEWLUNM-BED1 12/11/2008 <0.0017 <0.0017 0.0017 

WWO-D-NEWLUNM-PT 9/10/2008 0.20 0.19 0.0023 

WWO-D-NEWLUNM-PT-2 9/10/2008 0.20 0.19 0.0023 

WWO-D-NEWLUNM-BED1 9/10/2008 <0.0023 <0.0023 0.0023 

WWO-D-NEWLUNM-BED1-2 9/10/2008 <0.0023 <0.0023 0.0023 

WWO-D-NEWLUNM-BED1 5/28/2008 <0.0019 <0.0019 0.0019 WWO-D-NEWLUNM-BED1 2/26/2008 NQ NQ 0.0022 WWO-D-NEWLUNM-BED2 2/26/2008 <0.0022 <0.0022 0.0022 WWO-D-NEWLUNM-BED1 12/4/2007 <0.0031 <0.0031 0.0031 

WWO-D-NEWLUNM-PT 8/15/2007 0.21 0.20 0.0012 

WWO-D-NEWLUNM-BED1 8/15/2007 <0.0012 <0.0012 0.0012 WWO-D-NEWLUNM-BED1 5/30/2007 <0.0027 <0.0027 0.0027 WWO-D-NEWLUNM-BED1 2/23/2007 <0.0010 <0.0010 0.0010 WWO-D-NEWLUNM-BED1 12/7/2006 <0.0018 <0.0018 0.0018 WWO-D-NEWLUNM-BED1 8/16/2006 <0.0026 <0.0026 0.0026 

WWO-D-NEWLUNM-PT 6/20/2006 0.3 0.288 0.0012 

WWO-D-NEWLUNM-BED1 6/20/2006 NQ NQ 0.0012 WWO-D-NEWLUNM-BED2 6/20/2006 <0.0026 <0.0026 0.0026 

OursS WWO-D-OURSS-PT 9/1/2009 0.020 0.019 0.0026 

WWO-D-OURSS-BED1 9/1/2009 <0.0026 <0.0026 0.0026 WWO-D-OURSS-BED1 6/10/2009 <0.0026 <0.0026 0.0026 WWO-D-OURSS-BED1 3/4/2009 <0.0026 <0.0026 0.0026 WWO-D-OURSS-BED1 12/11/2008 <0.0017 <0.0017 0.0017 

WWO-D-OURSS-PT 9/10/2008 0.021 0.020 0.0023 

WWO-D-OURSS-BED1 9/10/2008 <0.0023 <0.0023 0.0023 WWO-D-OURSS-BED1 5/28/2008 <0.0019 <0.0019 0.0019 WWO-D-OURSS-BED1 2/26/2008 <0.0022 <0.0022 0.0022 WWO-D-OURSS-BED1 12/7/2007 <0.0031 <0.0031 0.0031 

WWO-D-OURSS-PT 8/15/2007 0.045 0.043 0.0012 

WWO-D-OURSS-BED1 8/15/2007 <0.0012 <0.0012 0.0012 WWO-D-OURSS-BED1 5/30/2007 <0.0027 <0.0027 0.0027 

2/3/10 Page 14 of 22 
Table 4.5

Residential Treatment Results, Ohio - GAC System Samples

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER# DATESMPL APFO (ug/L) PFOA (ug/L) *LOD 

WWO-D-OURSD-BED1 2/23/2007 <0.0010 <0.0010 0.0010 

WWO-D-OURSS-BED1 12/7/2006 <0.0018 <0.0018 0.0018 WWO-D-OURSS-BED1 8/14/2006 <0.0026 <0.0026 0.0026 WWO-D-OURSS-BED2 7/23/2006 <0.0026 <0.0026 0.0026 

WWO-D-OURSS-PT 6/23/2006 0.026 0.025 0.0026 

WWO-D-OURSS-BED1 6/23/2006 NQ NQ 0.0026 

ParsonsCF WWO-D-PARSONSCF-PT 9/1/2009 11 11 0.026 

WWO-D-PARSONSCF-BED1 9/1/2009 <0.0026 <0.0026 0.0026 WWO-D-PARSONSCF-BED1 6/3/2009 <0.0026 <0.0026 0.0026 WWO-D-PARSONSCF-BED1 6/3/2009 <0.0026 <0.0026 0.0026 WWO-D-PARSONSCF-BED1 2/16/2009 <0.0026 <0.0026 0.0026 WWO-D-PARSONSCF-BED1 12/17/2008 <0.0017 <0.0017 0.0017 

WWO-D-PARSONSCF-PT 9/2/2008 9.7 9.3 0.023 

WWO-D-PARSONSCF-BED1 9/2/2008 <0.0023 <0.0023 0.0023 WWO-D-PARSONSCF-BED1 6/4/2008 NQ NQ 0.0019 WWO-D-PARSONSCF-BED2 6/4/2008 <0.0019 <0.0019 0.0019 WWO-D-PARSONSCF-BED1 2/14/2008 <0.0022 <0.0022 0.0022 WWO-D-PARSONSCF-BED1 11/19/2007 <0.0031 <0.0031 0.0031 

WWO-D-PARSONSCF-PT 8/9/2007 10 10 0.012 

WWO-D-PARSONSCF-BED1 8/9/2007 <0.0012 <0.0012 0.0012 WWO-D-PARSONSCF-BED1 5/16/2007 <0.0027 <0.0027 0.0027 WWO-D-PARSONSCF-BED1 2/15/2007 <0.0010 <0.0010 0.0010 WWO-D-PARSONSCF-BED1 1/17/2007 NQ NQ 0.0010 WWO-D-PARSONSCF-BED2 1/17/2007 <0.0010 <0.0010 0.0010 WWO-D-PARSONSCF-BED1 12/12/2006 <0.0018 <0.0018 0.0018 WWO-D-PARSONSCF-BED1 11/7/2006 <0.0018 <0.0018 0.0018 WWO-D-PARSONSCF-BED1 10/11/2006 <0.0018 <0.0018 0.0018 WWO-D-PARSONSCF-BED1 9/6/2006 <0.0026 <0.0026 0.0026 WWO-D-PARSONSCF-BED1 8/8/2006 <0.0016 <0.0016 0.0016 WWO-D-PARSONSCF-BED1 7/7/2006 <0.0026 <0.0026 0.0026 

WWO-D-PARSONSCF-PT 5/12/2006 14.2 13.6 0.12 

WWO-D-PARSONSCF-BED1 5/12/2006 NQ NQ 0.0012 WWO-D-PARSONSCF-BED2 5/12/2006 <0.0012 <0.0012 0.0012 

PriceFL WWO-D-PRICEFL-BED1 12/1/2009 <0.0021 <0.0021 0.0021 

WWO-D-PRICEFL-PT 8/13/2009 1.8 1.7 0.026 

WWO-D-PRICEFL-BED1 8/13/2009 <0.0026 <0.0026 0.0026 WWO-D-PRICEFL-BED1 5/8/2009 <0.0026 <0.0026 0.0026 WWO-D-PRICEFL-BED1 2/9/2009 <0.0026 <0.0026 0.0026 WWO-D-PRICEFL-BED1 11/11/2008 <0.0017 <0.0017 0.0017 

WWO-D-PRICEFL-PT 9/11/2008 1.2 1.2 0.023 

2/3/10 Page 15 of 22 
Table 4.5

Residential Treatment Results, Ohio - GAC System Samples

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER# DATESMPL APFO (ug/L) PFOA (ug/L) *LOD 

WWO-D-PRICEFL-BED1 9/11/2008 <0.0023 <0.0023 0.0023 WWO-D-PRICEFL-BED1 4/9/2008 <0.0019 <0.0019 0.0019 WWO-D-PRICEFL-BED1 2/5/2008 <0.0022 <0.0022 0.0022 WWO-D-PRICEFL-BED1 11/1/2007 <0.0031 <0.0031 0.0031 

WWO-D-PRICEFL-PT 8/3/2007 1.4 1.3 0.012 

WWO-D-PRICEFL-BED1 8/3/2007 <0.0012 <0.0012 0.0012 WWO-D-PRICEFL-BED1 5/9/2007 <0.0027 <0.0027 0.0027 WWO-D-PRICEFL-BED1 2/1/2007 <0.0010 <0.0010 0.0010 WWO-D-PRICEFL-BED1 12/11/2006 <0.0018 <0.0018 0.0018 WWO-D-PRICEFL-BED1 8/17/2006 <0.0026 <0.0026 0.0026 

WWO-D-PRICEFL-PT 5/17/2006 1.22 1.17 0.012 

WWO-D-PRICEFL-BED1 5/17/2006 <0.0012 <0.0012 0.0012 

Riggins1833 WWO-D-RIGGINS1833-BED1 12/7/2009 <0.0033 <0.0033 0.0033 

WWO-D-RIGGINS1833-PT 8/25/2009 0.23 0.22 0.0026 

WWO-D-RIGGINS1833-BED1 8/25/2009 <0.0026 <0.0026 0.0026 WWO-D-RIGGINS1833-BED1 6/3/2009 <0.0026 <0.0026 0.0026 WWO-D-RIGGINS1833-BED1 3/17/2009 <0.0026 <0.0026 0.0026 WWO-D-RIGGINS1833-BED1 12/1/2008 <0.0017 <0.0017 0.0017 

WWO-D-RIGGINS1833-PT 9/22/2008 0.15 0.14 0.0017 

WWO-D-RIGGINS1833-BED1 9/22/2008 <0.0017 <0.0017 0.0017 WWO-D-RIGGINS1833-BED1 6/5/2008 <0.0019 <0.0019 0.0019 WWO-D-RIGGINS1833-BED1 2/13/2008 <0.0022 <0.0022 0.0022 WWO-D-RIGGINS1833-BED1 11/19/2007 <0.0031 <0.0031 0.0031 

WWO-D-RIGGINS1833-PT 8/8/2007 0.15 0.14 0.0012 

WWO-D-RIGGINS1833-BED1 8/8/2007 <0.0012 <0.0012 0.0012 WWO-D-RIGGINS1833-BED1 5/16/2007 <0.0027 <0.0027 0.0027 WWO-D-RIGGINS1833-BED1 2/16/2007 NQ NQ 0.0010 WWO-D-RIGGINS1833-BED2 2/16/2007 <0.0010 <0.0010 0.0010 WWO-D-RIGGINS1833-BED1 12/6/2006 <0.0018 <0.0018 0.0018 WWO-D-RIGGINS1833-BED1 8/21/2006 <0.0026 <0.0026 0.0026 

WWO-D-RIGGINS1833-PT 6/22/2006 0.158 0.152 0.0026 

WWO-D-RIGGINS1833-BED1 6/22/2006 <0.0026 <0.0026 0.0026 

Riggins1922 WWO-D-RIGGINS1922-BED1 12/7/2009 <0.0033 <0.0033 0.0033 

WWO-D-RIGGINS1922-PT 8/25/2009 0.070 0.067 0.0026 

WWO-D-RIGGINS1922-BED1 8/25/2009 <0.0026 <0.0026 0.0026 WWO-D-RIGGINS1922-BED1 6/3/2009 <0.0026 <0.0026 0.0026 WWO-D-RIGGINS1922-BED1 3/17/2009 NQ NQ 0.0026 WWO-D-RIGGINS1922-BED2 3/17/2009 <0.0026 <0.0026 0.0026 WWO-D-RIGGINS1922-BED1 12/1/2008 NQ NQ 0.0017 WWO-D-RIGGINS1922-BED2 12/1/2008 <0.0017 <0.0017 0.0017 

2/3/10 Page 16 of 22 
Table 4.5

Residential Treatment Results, Ohio - GAC System Samples

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER# DATESMPL APFO (ug/L) PFOA (ug/L) *LOD 

WWO-D-RIGGINS1922-PT 9/22/2008 0.55 0.53 0.0017 

WWO-D-RIGGINS1922-BED1 9/22/2008 NQ NQ 0.0017 WWO-D-RIGGINS1922-BED2 9/22/2008 <0.0017 <0.0017 0.0017 WWO-D-RIGGINS1922-BED1 6/5/2008 NQ NQ 0.0019 WWO-D-RIGGINS1922-BED2 6/5/2008 <0.0019 <0.0019 0.0019 WWO-D-RIGGINS1922-BED1 2/13/2008 <0.0022 <0.0022 0.0022 WWO-D-RIGGINS1922-BED1 11/19/2007 <0.0031 <0.0031 0.0031 

WWO-D-RIGGINS1922-PT 8/8/2007 0.020 0.019 0.0012 

WWO-D-RIGGINS1922-BED1 8/8/2007 <0.0012 <0.0012 0.0012 WWO-D-RIGGINS1922-BED1 5/16/2007 <0.0027 <0.0027 0.0027 WWO-D-RIGGINS1922-BED1 2/19/2007 <0.0010 <0.0010 0.0010 WWO-D-RIGGINS1922-BED1 8/21/2006 <0.0026 <0.0026 0.0026 

WWO-D-RIGGINS1922-PT 6/28/2006 0.779 0.748 0.0026 

WWO-D-RIGGINS1922-BED1 6/28/2006 <0.0026 <0.0026 0.0026 

RumerJH WWO-D-RUMERJH-BED1 12/1/2009 <0.0021 <0.0021 0.0021 

WWO-D-RUMERJH-PT 8/10/2009 1.8 1.7 0.026 

WWO-D-RUMERJH-BED1 8/10/2009 <0.0026 <0.0026 0.0026 WWO-D-RUMERJH-BED1 5/8/2009 <0.0026 <0.0026 0.0026 WWO-D-RUMERJH-BED1 2/9/2009 <0.0026 <0.0026 0.0026 WWO-D-RUMERJH-BED1 11/11/2008 <0.0017 <0.0017 0.0017 

WWO-D-RUMERJH-PT 7/31/2008 0.65 0.62 0.0023 

WWO-D-RUMERJH-BED1 7/31/2008 <0.0023 <0.0023 0.0023 WWO-D-RUMERJH-BED1 4/8/2008 <0.0019 <0.0019 0.0019 WWO-D-RUMERJH-BED1 2/4/2008 <0.0022 <0.0022 0.0022 WWO-D-RUMERJH-BED1 11/1/2007 <0.0031 <0.0031 0.0031 

WWO-D-RUMERJH-PT 7/25/2007 1.0 1.0 0.012 

WWO-D-RUMERJH-BED1 7/25/2007 NQ NQ 0.0012 WWO-D-RUMERJH-BED2 7/25/2007 NQ NQ 0.0012 WWO-D-RUMERJH-BED1 5/9/2007 <0.0027 <0.0027 0.0027 WWO-D-RUMERJH-BED1 1/31/2007 <0.0010 <0.0010 0.0010 WWO-D-RUMERJH-BED1 10/30/2006 <0.0018 <0.0018 0.0018 WWO-D-RUMERJH-BED1 8/15/2006 <0.0026 <0.0026 0.0026 

WWO-D-RUMERJH-PT 5/12/2006 1.06 1.02 0.012 

WWO-D-RUMERJH-BED1 5/12/2006 <0.0012 <0.0012 0.0012 

RyanSP WWO-D-RYANSP-BED1 12/1/2009 <0.0021 <0.0021 0.0021 

WWO-D-RYANSP-PT 8/13/2009 0.31 0.30 0.0026 

WWO-D-RYANSP-BED1 8/13/2009 <0.0026 <0.0026 0.0026 WWO-D-RYANSP-BED1 5/5/2009 <0.0026 <0.0026 0.0026 WWO-D-RYANSP-BED1 2/11/2009 <0.0026 <0.0026 0.0026 WWO-D-RYANSP-BED1 11/11/2008 <0.0017 <0.0017 0.0017 

2/3/10 Page 17 of 22 
Table 4.5

Residential Treatment Results, Ohio - GAC System Samples

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER# DATESMPL APFO (ug/L) PFOA (ug/L) *LOD 

WWO-D-RYANSP-PT 7/31/2008 0.16 0.15 0.0023 

WWO-D-RYANSP-BED1 7/31/2008 <0.0023 <0.0023 0.0023 WWO-D-RYANSP-BED1 4/8/2008 <0.0019 <0.0019 0.0019 WWO-D-RYANSP-BED1 2/4/2008 <0.0022 <0.0022 0.0022 WWO-D-RYANSP-BED1 10/31/2007 <0.0031 <0.0031 0.0031 

WWO-D-RYANSP-PT 7/25/2007 0.20 0.19 0.0012 

WWO-D-RYANSP-BED1 7/25/2007 <0.0012 <0.0012 0.0012 WWO-D-RYANSP-BED1 5/15/2007 <0.0027 <0.0027 0.0027 WWO-D-RYANSP-BED1 2/1/2007 <0.0010 <0.0010 0.0010 WWO-D-RYANSP-BED1 11/2/2006 <0.0018 <0.0018 0.0018 WWO-D-RYANSP-BED1 8/15/2006 <0.0026 <0.0026 0.0026 

WWO-D-RYANSP-BED1-2 8/15/2006 <0.0026 <0.0026 0.0026 

WWO-D-RYANSP-PT 5/15/2006 0.243 0.233 0.00098 

WWO-D-RYANSP-BED1 5/15/2006 <0.00098 <0.00098 0.00098 

SmithTJ WWO-D-SMITHTJ-PT 9/1/2009 0.085 0.082 0.0026 

WWO-D-SMITHTJ-BED1 9/1/2009 <0.0026 <0.0026 0.0026 WWO-D-SMITHTJ-BED1 6/9/2009 <0.0026 <0.0026 0.0026 WWO-D-SMITHTJ-BED1 3/4/2009 <0.0026 <0.0026 0.0026 WWO-D-SMITHTJ-BED1 12/11/2008 <0.0017 <0.0017 0.0017 

WWO-D-SMITHTJ-PT 9/10/2008 0.10 0.10 0.0023 

WWO-D-SMITHTJ-BED1 9/10/2008 <0.0023 <0.0023 0.0023 WWO-D-SMITHTJ-BED1 6/17/2008 <0.0019 <0.0019 0.0019 WWO-D-SMITHTJ-BED1 2/26/2008 NQ NQ 0.0022 WWO-D-SMITHTJ-BED2 2/26/2008 NQ NQ 0.0022 

WWO-D-SMITHTJ 12/4/2007 <0.0031 <0.0031 0.0031 WWO-D-SMITHTJ 12/4/2007 <0.0031 <0.0031 0.0031 

WWO-D-SMITHTJ-PT 8/15/2007 0.21 0.20 0.0012 

WWO-D-SMITHTJ-BED1 8/15/2007 <0.0012 <0.0012 0.0012 WWO-D-SMITHTJ-BED1 5/30/2007 <0.0027 <0.0027 0.0027 WWO-D-SMITHTJ-BED1 2/23/2007 <0.0010 <0.0010 0.0010 WWO-D-SMITHTJ-BED1 12/7/2006 <0.0018 <0.0018 0.0018 WWO-D-SMITHTJ-BED1 8/16/2006 <0.0026 <0.0026 0.0026 

WWO-D-SMITHTJ-PT 6/20/2006 0.258 0.248 0.0012 

WWO-D-SMITHTJ-BED1 6/20/2006 NQ NQ 0.0012 WWO-D-SMITHTJ-BED2 6/20/2006 <0.0026 <0.0026 0.0026 

SwainPH WWO-D-SWAINPH-BED1 12/8/2009 <0.0033 <0.0033 0.0033 

WWO-D-SWAINPH-PT 8/13/2009 0.71 0.68 0.0026 

WWO-D-SWAINPH-BED1 8/13/2009 <0.0026 <0.0026 0.0026 WWO-D-SWAINPH-BED1 5/7/2009 <0.0026 <0.0026 0.0026 WWO-D-SWAINPH-BED1 2/11/2009 <0.0026 <0.0026 0.0026 

2/3/10 Page 18 of 22 
Table 4.5

Residential Treatment Results, Ohio - GAC System Samples

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER# DATESMPL APFO (ug/L) PFOA (ug/L) *LOD 

WWO-D-SWAINPH-BED1 11/11/2008 <0.0017 <0.0017 0.0017 

WWO-D-SWAINPH-PT 7/31/2008 0.32 0.31 0.0023 

WWO-D-SWAINPH-BED1 7/31/2008 <0.0023 <0.0023 0.0023 WWO-D-SWAINPH-BED1 4/8/2008 <0.0019 <0.0019 0.0019 WWO-D-SWAINPH-BED1 2/5/2008 <0.0022 <0.0022 0.0022 WWO-D-SWAINPH-BED1 11/1/2007 <0.0031 <0.0031 0.0031 

WWO-D-SWAINPH-PT 7/27/2007 0.68 0.65 0.0012 

WWO-D-SWAINPH-BED1 7/27/2007 <0.0012 <0.0012 0.0012 WWO-D-SWAINPH-BED1 5/9/2007 <0.0027 <0.0027 0.0027 

WWO-D-SWAINPH-BED1-2 5/9/2007 <0.0027 <0.0027 0.0027 

WWO-D-SWAINPH-BED1 1/31/2007 <0.0010 <0.0010 0.0010 WWO-D-SWAINPH-BED1 11/2/2006 <0.0018 <0.0018 0.0018 WWO-D-SWAINPH-BED1 8/15/2006 <0.0026 <0.0026 0.0026 

WWO-D-SWAINPH-PT 5/15/2006 0.832 0.799 0.00098 

WWO-D-SWAINPH-BED1 5/15/2006 <0.00098 <0.00098 0.00098 

ThornberryW WWO-D-THORNBERRYW-BED1 12/1/2009 <0.0021 <0.0021 0.0021 

WWO-D-THORNBERRYW-PT 7/29/2009 0.047 0.045 0.0026 

WWO-D-THORNBERRYW-BED1 7/29/2009 <0.0026 <0.0026 0.0026 WWO-D-THORNBERRYW-BED1 5/7/2009 <0.0026 <0.0026 0.0026 WWO-D-THORNBERRYW-BED1 2/10/2009 <0.0026 <0.0026 0.0026 WWO-D-THORNBERRYW-BED1 11/11/2008 <0.0017 <0.0017 0.0017 

WWO-D-THORNBERRYW-PT 8/12/2008 0.10 0.097 0.0023 

WWO-D-THORNBERRYW-BED1 8/12/2008 <0.0023 <0.0023 0.0023 WWO-D-THORNBERRYW-BED1 4/8/2008 <0.0019 <0.0019 0.0019 WWO-D-THORNBERRYW-BED1 2/5/2008 <0.0022 <0.0022 0.0022 WWO-D-THORNBERRYW-BED1 11/14/2007 <0.0031 <0.0031 0.0031 

WWO-D-THORNBERRYW-PT 7/27/2007 0.12 0.12 0.0012 

WWO-D-THORNBERRYW-BED1 7/27/2007 <0.0012 <0.0012 0.0012 WWO-D-THORNBERRYW-BED1 5/16/2007 <0.0027 <0.0027 0.0027 WWO-D-THORNBERRYW-BED1 2/20/2007 <0.0010 <0.0010 0.0010 WWO-D-THORNBERRYW-BED1 12/7/2006 <0.0018 <0.0018 0.0018 

WWO-D-THORNBERRYW-PT 8/24/2006 0.041 0.039 0.0026 

WWO-D-THORNBERRYW-BED1 8/24/2006 <0.0026 <0.0026 0.0026 

WebbOL$ WWO-D-WEBBOL-BED1 11/2/2009 <0.0033 <0.0033 0.0033 

WWO-D-WEBBOL-PT 8/13/2009 0.20 0.19 0.0026 

WWO-D-WEBBOL-BED1 8/13/2009 <0.0026 <0.0026 0.0026 WWO-D-WEBBOL-BED1 6/11/2009 NQ NQ 0.0026 WWO-D-WEBBOL-BED2 6/11/2009 NQ NQ 0.0026 

WWO-D-WEBBOL-PT 8/7/2008 0.18 0.17 0.0023 

WWO-D-WEBBOL-BED1 8/7/2008 <0.0023 <0.0023 0.0023 

2/3/10 Page 19 of 22 
Table 4.5

Residential Treatment Results, Ohio - GAC System Samples

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER# DATESMPL APFO (ug/L) PFOA (ug/L) *LOD 

WWO-D-WEBBOL-BED1 6/5/2008 0.012 0.012 0.0019 WWO-D-WEBBOL-BED2 6/5/2008 NQ NQ 0.0019 

WWO-D-WEBBOL-PT 8/30/2007 0.11 0.11 0.0012 

WWO-D-WEBBOL-BED1 8/30/2007 0.0070 0.0067 0.0012 WWO-D-WEBBOL-BED2 8/30/2007 <0.0012 <0.0012 0.0012 

WWO-D-WEBBOL-PT 7/24/2007 0.19 0.18 0.0012 

WWO-D-WEBBOL-BED1 7/24/2007 NQ NQ 0.0012 WWO-D-WEBBOL-BED2 7/24/2007 0.17 0.16 0.0012 WWO-D-WEBBOL-BED1 5/15/2007 <0.0027 <0.0027 0.0027 WWO-D-WEBBOL-BED1 10/24/2006 <0.0018 <0.0018 0.0018 WWO-D-WEBBOL-BED1 8/15/2006 <0.0026 <0.0026 0.0026 

WWO-D-WEBBOL-PT 6/14/2006 0.199 0.191 0.0012 

WWO-D-WEBBOL-BED1 6/14/2006 <0.0012 <0.0012 0.0012 

WeiglyG~ WWO-D-WEIGLYG-BED1 5/17/2007 <0.0027 <0.0027 0.0027 

WWO-D-WEIGLYG-BED1 3/7/2007 <0.0010 <0.0010 0.0010 WWO-D-WEIGLYG-BED1 11/16/2006 <0.0018 <0.0018 0.0018 

WWO-D-WEIGLYG-PT 10/4/2006 0.23 0.22 0.0018 

WWO-D-WEIGLYG-BED1 10/4/2006 <0.0018 <0.0018 0.0018 

Wheaton2610 WWO-D-WHEATON2610-BED1 12/1/2009 <0.0021 <0.0021 0.0021 

WWO-D-WHEATON2610-PT 7/29/2009 0.060 0.058 0.0026 

WWO-D-WHEATON2610-BED1 7/29/2009 NQ NQ 0.0026 WWO-D-WHEATON2610-BED2 7/29/2009 <0.0026 <0.0026 0.0026 WWO-D-WHEATON2610-BED1 5/5/2009 NQ NQ 0.0026 WWO-D-WHEATON2610-BED2 5/5/2009 <0.0026 <0.0026 0.0026 WWO-D-WHEATON2610-BED1 2/9/2009 <0.0026 <0.0026 0.0026 WWO-D-WHEATON2610-BED1 11/11/2008 NQ NQ 0.0017 WWO-D-WHEATON2610-BED2 11/11/2008 NQ NQ 0.0017 

WWO-D-WHEATON2610-PT 7/31/2008 0.028 0.027 0.0023 

WWO-D-WHEATON2610-BED1 7/31/2008 <0.0023 <0.0023 0.0023 WWO-D-WHEATON2610-BED1 4/8/2008 <0.0019 <0.0019 0.0019 WWO-D-WHEATON2610-BED1 2/4/2008 <0.0022 <0.0022 0.0022 WWO-D-WHEATON2610-BED1 11/1/2007 <0.0031 <0.0031 0.0031 

WWO-D-WHEATON2610-PT 7/25/2007 0.042 0.040 0.0012 

WWO-D-WHEATON2610-BED1 7/25/2007 NQ NQ 0.0012 WWO-D-WHEATON2610-BED2 7/25/2007 NQ NQ 0.0012 WWO-D-WHEATON2610-BED1 5/9/2007 <0.0027 <0.0027 0.0027 WWO-D-WHEATON2610-BED1 2/1/2007 <0.0010 <0.0010 0.0010 WWO-D-WHEATON2610-BED1 11/2/2006 NQ NQ 0.0018 WWO-D-WHEATON2610-BED2 11/2/2006 <0.0018 <0.0018 0.0018 WWO-D-WHEATON2610-BED1 8/17/2006 <0.0026 <0.0026 0.0026 

2/3/10 Page 20 of 22 
Table 4.5

Residential Treatment Results, Ohio - GAC System Samples

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER# DATESMPL APFO (ug/L) PFOA (ug/L) *LOD 

WWO-D-WHEATONCA-PT 5/16/2006 0.0474 0.0455 0.0012 

WWO-D-WHEATONCA-BED1 5/16/2006 <0.0012 <0.0012 0.0012 

WhiteheadE WWO-D-WHITEHEADE-PT 9/1/2009 0.23 0.22 0.0026 

WWO-D-WHITEHEADE-BED1 9/1/2009 <0.0026 <0.0026 0.0026 WWO-D-WHITEHEADE-BED1 6/10/2009 <0.0026 <0.0026 0.0026 WWO-D-WHITEHEADE-BED1 3/4/2009 <0.0026 <0.0026 0.0026 WWO-D-WHITEHEADE-BED1 12/11/2008 <0.0017 <0.0017 0.0017 

WWO-D-WHITEHEADE-PT 9/23/2008 0.27 0.26 0.0017 

WWO-D-WHITEHEADE-BED1 9/23/2008 <0.0017 <0.0017 0.0017 WWO-D-WHITEHEADE-BED1 5/28/2008 <0.0019 <0.0019 0.0019 WWO-D-WHITEHEADE-BED1 2/26/2008 <0.0022 <0.0022 0.0022 WWO-D-WHITEHEADE-BED1 12/15/2007 <0.0031 <0.0031 0.0031 

WWO-D-WHITEHEADE-PT 8/15/2007 0.37 0.36 0.0012 

WWO-D-WHITEHEADE-BED1 8/15/2007 <0.0012 <0.0012 0.0012 WWO-D-WHITEHEADE-BED1 5/30/2007 <0.0027 <0.0027 0.0027 WWO-D-WHITEHEADE-BED1 2/22/2007 <0.0010 <0.0010 0.0010 WWO-D-WHITEHEADE-BED1 12/7/2006 <0.0018 <0.0018 0.0018 WWO-D-WHITEHEADE-BED1 8/16/2006 <0.0026 <0.0026 0.0026 

WWO-D-WHITEHEADE-PT 6/20/2006 0.476 0.457 0.0012 

WWO-D-WHITEHEADE-BED1 6/20/2006 <0.0012 <0.0012 0.0012 

WilsonRM1 WWO-D-WILSONRM1-BED1 12/1/2009 <0.0021 <0.0021 0.0021 

WWO-D-WILSONRM1-PT 7/29/2009 4.7 4.5 0.026 

WWO-D-WILSONRM1-BED1 7/29/2009 <0.0026 <0.0026 0.0026 WWO-D-WILSONRM1-BED1 5/5/2009 NQ NQ 0.0026 WWO-D-WILSONRM1-BED2 5/5/2009 2.0 1.9 0.026 WWO-D-WILSONRM1-BED1 2/9/2009 <0.0026 <0.0026 0.0026 WWO-D-WILSONRM1-BED1 11/11/2008 NQ NQ 0.0017 WWO-D-WILSONRM1-BED2 11/11/2008 NQ NQ 0.0017 

WWO-D-WILSONRM1-PT 8/12/2008 3.4 3.3 0.023 

WWO-D-WILSONRM1-BED1 8/12/2008 <0.0023 <0.0023 0.0023 WWO-D-WILSONRM1-BED1 4/8/2008 NQ NQ 0.0019 WWO-D-WILSONRM1-BED2 4/8/2008 NQ NQ 0.0019 WWO-D-WILSONRM1-BED1 2/5/2008 NQ NQ 0.0022 WWO-D-WILSONRM1-BED2 2/5/2008 NQ NQ 0.0022 WWO-D-WILSONRM1-BED1 11/1/2007 <0.0031 <0.0031 0.0031 

WWO-D-WILSONRM1-BED1-2 11/1/2007 <0.0031 <0.0031 0.0031 

WWO-D-WILSONRM1-PT 7/27/2007 3.7 3.6 0.012 

WWO-D-WILSONRM1-BED1 7/27/2007 NQ NQ 0.0012 WWO-D-WILSONRM1-BED2 7/27/2007 NQ NQ 0.0012 WWO-D-WILSONRM1-BED1 5/15/2007 NQ NQ 0.0027 

2/3/10 Page 21 of 22 
Table 4.5

Residential Treatment Results, Ohio - GAC System Samples

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER# DATESMPL APFO (ug/L) PFOA (ug/L) *LOD 

WWO-D-WILSONRM1-BED2 5/15/2007 <0.0027 <0.0027 0.0027 WWO-D-WILSONRM1-BED1 2/1/2007 <0.0010 <0.0010 0.0010 WWO-D-WILSONRM1-BED1 11/2/2006 <0.0018 <0.0018 0.0018 WWO-D-WILSONRM1-BED1 8/15/2006 <0.0026 <0.0026 0.0026 

WWO-D-WILSONRM1-PT 6/28/2006 3.29 3.16 0.026 

WWO-D-WILSONRM1-PT-2 6/28/2006 3.26 3.13 0.026 

WWO-D-WILSONRM1-BED1 6/28/2006 <0.0026 <0.0026 0.0026 

#Sample nomenclature may not be consistent over time. However, all samples have been checked to verify that they are from the same location.*Starting in July 2005, Limit of Detection (LOD) and Limit of Quantitiation (LOQ) were determined on at least a quarterly basis using the signal to noise determination described in the Phase II QAPP. NQ = Not quantifiable. Detected at a concentration above the LOD and below the LOQ.^Well was winterized and no samples are taken during the winter months. In August 2007, the property was sold and thresidents will reside there year round. @ This resident passed away in late September 2007. ~GAC Treatment System was bypassed starting in 3Q07 by the resident due to bacteria issues with the well and therefosamples were collected.$Well is winterized and no samples are taken during the winter months.

2/3/10 Page 22 of 22 
Table 4.6

Status of Residents Qualified for GAC Treatment Receiving Alternative Treatment or Not Being Samp

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER DATESMPL APFO 

(ppb or ug/L)

 *PFOA (ppb or ug/L)

**LOD (ppb or ug/L)

**LOQ (ppb or ug/L)

Comme

AnkromS WWO-D-ANKROMS-BED1 2/12/2008 <0.0022 <0.0022 0.0022 0.011 

WWO-D-ANKROMS-BED1 11/19/2007 <0.0031 <0.0031 0.0031 0.016 WWO-D-ANKROMS-PT 8/3/2007 0.69 0.66 0.0012 0.0062WWO-D-ANKROMS-BED1 8/3/2007 <0.0012 <0.0012 0.0012 0.0062WWO-D-ANKROMS-BED1 5/24/2007 <0.0027 <0.0027 0.0027 0.013 WWO-D-ANKROMS-BED1 2/16/2007 <0.0010 <0.0010 0.0010 0.0051 WWO-D-ANKROMS-BED1-2 2/16/2007 <0.0010 <0.0010 0.0010 0.0051 WWO-D-ANKROMS-BED1 12/6/2006 <0.0018 <0.0018 0.0018 0.0090 WWO-D-ANKROMS-PT 8/21/2006 0.45 0.43 0.0026 0.013 WWO-D-ANKROMS-BED1 8/21/2006 <0.0026 <0.0026 0.0026 0.013 WWO-D-12375 12/8/2005 0.637 0.612 0.002 0.0098

BoardJG WWO-D-BOARDJG-BED1 11/19/2007 <0.0031 <0.0031 0.0031 0.016 

WWO-D-BOARDJG-PT 8/9/2007 8.4 8.1 0.012 0.062 WWO-D-BOARDJG-BED1 8/9/2007 <0.0012 <0.0012 0.0012 0.0062 WWO-D-BOARDJG-BED1 5/16/2007 <0.0027 <0.0027 0.0027 0.013WWO-D-BOARDJG-BED1 2/12/2007 <0.0010 <0.0010 0.0010 0.0051 WWO-D-BOARDJG-BED1 12/6/2006 <0.0018 <0.0018 0.0018 0.0090 WWO-D-BOARDJG-BED1 8/8/2006 <0.0016 <0.0016 0.0016 0.0078WWO-D-BOARDJG-PT 5/15/2006 13.5 13 0.098 0.49WWO-D-BOARDJG-BED1 5/15/2006 <0.00098 <0.00098 0.00098 0.0049WWO-D-BOARD JG 8/6/2002 6.5 0.01 0.05

BaileyR WWO-D-11641 12/22/2004 0.0526 0.0505 0.01 0.05 Bacteria

owner. 2Q07 aby DuP

CoggeshallJL WWO-D-COGGESHALLJL-BED1 11/27/2007 <0.0031 <0.0031 0.0031 0.016 

WWO-D-COGGESHALLJL-PT 8/9/2007 3.1 3.0 0.012 0.062 WWO-D-COGGESHALLJL-BED1 8/9/2007 <0.0012 <0.0012 0.0012 0.0062 WWO-D-COGGESHALLJL-BED1 5/29/2007 <0.0027 <0.0027 0.0027 0.013WWO-D-COGGESHALLJL-BED1 2/19/2007 <0.0010 <0.0010 0.0010 0.0051 WWO-D-COGGESHALLJL-BED1 12/12/2006 <0.0018 <0.0018 0.0018 0.0090 WWO-D-COGGESHALLJL-BED1 8/17/2006 <0.0026 <0.0026 0.0026 0.013

Residenpropertytrailer wlocationwas remIn 1Q08residenLHWA. treatmereimburconnectIn 1Q08 residenLHWA. treatmereimburconnect

2/3/10 Page 1 of 5 
Table 4.6

Status of Residents Qualified for GAC Treatment Receiving Alternative Treatment or Not Being Samp

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER DATESMPL APFO 

(ppb or ug/L)

 *PFOA (ppb or ug/L)

**LOD (ppb or ug/L)

**LOQ (ppb or ug/L)

Comme

WWO-D-COGGESHALLJL-PT 5/11/2006 3.73 3.59 0.012 0.06WWO-D-COGGESHALLJL-BED1 5/11/2006 <0.0012 <0.0012 0.0012 0.006WWO-D-1008970 10/3/2005 4.02 3.86 0.014 0.067

WindlandNB WWO-D-16809 6/5/2006 0.884 0.849 0.0012 0.006 Residen

GAC syBottled and alteresponsoffer.

YoungNM WWK-D-YOUNGNM-BED1 3/7/2008 <0.0022 <0.0022 0.0022 0.011 

WWK-D-YOUNGNM-BED1 12/3/2007 <0.0031 <0.0031 0.0031 0.016 WWK-D-YOUNGNM-PT 8/23/2007 NQ NQ 0.0012 0.0062 WWK-D-YOUNGNM-BED1 8/23/2007 <0.0012 <0.0012 0.0012 0.0062 WWK-D-YOUNGNM-BED1 6/13/2007 <0.0027 <0.0027 0.0027 0.013 WWK-D-YOUNGNM-BED1 2/28/2007 <0.0010 <0.0010 0.0010 0.0051 WWK-D-YOUNGNM-BED1 12/13/2006 <0.0018 <0.0018 0.0018 0.0090 WWK-D-YOUNGNM-BED1 8/11/2006 <0.0026 <0.0026 0.0026 0.013 WWK-D-YOUNGNM-PT 6/21/2006 <0.0012 <0.0012 0.0012 0.006 WWK-D-YOUNGNM-PT-2 6/21/2006 <0.0012 <0.0012 0.0012 0.006 WWK-D-YOUNGNM-BED1 6/21/2006 <0.0012 <0.0012 0.0012 0.006 LTL-D-16744(1203) 9/2/2005 0.0553 0.0531 0.0015 0.0073

2727BeachDr WWO-D-2727BEACHDR-BED1 11/1/2007 <0.0031 <0.0031 0.0031 0.016 

WWO-D-2727BEACHDR-PT 7/25/2007 0.27 0.26 0.0012 0.0062WWO-D-2727BEACHDR-BED1 7/25/2007 <0.0012 <0.0012 0.0012 0.0062WWO-D-2727BEACHDRIVE-BED1 5/24/2007 <0.0027 <0.0027 0.0027 0.013 WWO-D-KEMPN-BED1 3/1/2007 <0.0010 <0.0010 0.0010 0.0051 WWO-D-KEMPN-BED1 12/19/2006 <0.0018 <0.0018 0.0018 0.0090 WWO-D-KEMPN-BED1 8/17/2006 <0.0026 <0.0026 0.0026 0.013 WWO-D-KEMPN-PT 6/15/2006 0.222 0.213 0.0012 0.006 WWO-D-KEMPN-BED1 6/15/2006 <0.0012 <0.0012 0.0012 0.006 WWO-D-KEMP N 9/11/2002 0.0912 0.01 0.05

Kemp wpropertyduring 1was 4Qpurchas3Q08 (24.8) and 2008 tawill havNew wecoal comSeptemND. YoDecembremovenew we

2/3/10 Page 2 of 5 
Table 4.6

Status of Residents Qualified for GAC Treatment Receiving Alternative Treatment or Not Being Samp

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER DATESMPL APFO 

(ppb or ug/L)

 *PFOA (ppb or ug/L)

**LOD (ppb or ug/L)

**LOQ (ppb or ug/L)

Comme

3015StRt339 WWO-D-3015STRT339-PT 8/2/2007 2.5 2.4 0.012 0.062 

WWO-D-3015STRT339-BED1 8/2/2007 <0.0012 <0.0012 0.0012 0.0062 WWO-D-3015STRT339-BED1 5/29/2007 <0.0027 <0.0027 0.0027 0.013WWO-D-WATSONK-BED1 2/1/2007 <0.0010 <0.0010 0.0010 0.0051 WWO-D-WATSONK-BED1 11/2/2006 <0.0018 <0.0018 0.0018 0.0090 WWO-D-WATSONK-BED1 8/17/2006 <0.0026 <0.0026 0.0026 0.013WWO-D-WATSONK-PT 6/20/2006 2.16 2.07 0.012 0.06WWO-D-WATSONK-BED1 6/20/2006 <0.0012 <0.0012 0.0012 0.006WWO-D-16783 11/17/2005 3.11 2.99 0.043 0.22

HunterPR WWO-D-HUNTERPR-BED1 4/8/2008 <0.0019 <0.0019 0.0019 0.0096 

WWO-D-HUNTERPR-BED1 2/6/2008 <0.0022 <0.0022 0.0022 0.011 WWO-D-HUNTERPR-BED1 11/15/2007 <0.0031 <0.0031 0.0031 0.016 WWO-D-HUNTERPR-PT 8/1/2007 0.54 0.52 0.0012 0.0062WWO-D-HUNTERPR-BED1 8/1/2007 <0.0012 <0.0012 0.0012 0.0062WWO-D-HUNTERPR-BED1 5/18/2007 <0.0027 <0.0027 0.0027 0.013 WWO-D-HUNTERPR-BED1 2/1/2007 <0.0010 <0.0010 0.0010 0.0051 WWO-D-HUNTERPR-BED1 11/2/2006 <0.0018 <0.0018 0.0018 0.0090 WWO-D-HUNTERPR-PT 8/15/2006 0.47 0.45 0.0026 0.013 WWO-D-HUNTERPR-BED1 8/15/2006 <0.0026 <0.0026 0.0026 0.013 WWO-D-16813 1/11/2006 0.346 0.332 0.0012 0.0062

LittleJM WWO-D-LITTLEJM-BED1 2/14/2008 NQ NQ 0.0022 0.011 

WWO-D-LITTLEJM-BED2 2/14/2008 NQ NQ 0.0022 0.011 WWO-D-LITTLEJM-BED1 11/20/2007 NQ NQ 0.0031 0.016 WWO-D-LITTLEJM-BED2 11/20/2007 NQ NQ 0.0031 0.016 WWO-D-LITTLEJM-PT 8/9/2007 2.2 2.1 0.012 0.062 WWO-D-LITTLEJM-BED1 8/9/2007 NQ NQ 0.0012 0.0062 WWO-D-LITTLEJM-BED2 8/9/2007 NQ NQ 0.0012 0.0062 WWO-D-LITTLEJM-BED1 5/16/2007 NQ NQ 0.0027 0.013 WWO-D-LITTLEJM-BED1-2 5/16/2007 <0.0027 <0.0027 0.0027 0.013 WWO-D-LITTLEJM-BED2 5/16/2007 <0.0027 <0.0027 0.0027 0.013 WWO-D-LITTLEJM-BED1 2/16/2007 NQ NQ 0.0010 0.0051 WWO-D-LITTLEJM-BED2 2/16/2007 <0.0010 <0.0010 0.0010 0.0051 WWO-D-LITTLEJR-BED1 12/11/2006 NQ NQ 0.0018 0.0090 

ResidenLHWA othe resiremoveResidenLHWA iresidenremoveWatson propertyduring 2connectResidenLHWA iGAC sy

2/3/10 Page 3 of 5 
Table 4.6

Status of Residents Qualified for GAC Treatment Receiving Alternative Treatment or Not Being Samp

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER DATESMPL APFO 

(ppb or ug/L)

 *PFOA (ppb or ug/L)

**LOD (ppb or ug/L)

**LOQ (ppb or ug/L)

Comme

WWO-D-LITTLEJR-BED2 12/11/2006 <0.0018 <0.0018 0.0018 0.0090 WWO-D-LITTLEJM-BED1 8/17/2006 <0.0026 <0.0026 0.0026 0.013 WWO-D-LITTLEJM-PT 5/15/2006 3.44 3.3 0.0098 0.049 WWO-D-LITTLEJM-BED1 5/15/2006 <0.00098 <0.00098 0.00098 0.0049 WWO-D-LITTLE JM 7/9/2002 2.13 0.01 0.05

LippsLL WWO-D-LIPPSLL-BED1 6/19/2008 <0.0019 <0.0019 0.0019 0.0096 

WWO-D-LIPPSLL-BED1 2/12/2008 <0.0022 <0.0022 0.0022 0.011 WWO-D-LIPPSLL-BED1 11/20/2007 <0.0031 <0.0031 0.0031 0.016 WWO-D-LIPPSLL-PT 8/8/2007 0.51 0.49 0.0012 0.0062 WWO-D-LIPPSLL-BED1 8/8/2007 <0.0012 <0.0012 0.0012 0.0062 WWO-D-LIPPSLL-BED1 5/24/2007 <0.0027 <0.0027 0.0027 0.013 WWO-D-LIPPSLL-BED1 2/13/2007 <0.0010 <0.0010 0.0010 0.0051 WWO-D-LIPPSLL-BED1 12/6/2006 <0.0018 <0.0018 0.0018 0.0090 WWO-D-LIPPSLL-BED1 8/8/2006 <0.0016 <0.0016 0.0016 0.0078 WWO-D-LIPPSLL-PT 5/17/2006 0.602 0.578 0.0012 0.006 WWO-D-LIPPSLL-BED1 5/17/2006 <0.0012 <0.0012 0.0012 0.006 WWO-D-16755 10/3/2005 0.788 0.757 0.0028 0.013

MaceMD WWO-D-MACEMD-PT 9/27/2008 0.64 0.61 0.0017 0.0085 

WWO-D-MACEMD-BED1 9/27/2008 <0.0017 <0.0017 0.0017 0.0085 WWO-D-MACEMD-BED1 6/5/2008 <0.0019 <0.0019 0.0019 0.0096 WWO-D-MACEMD-BED1 2/26/2008 <0.0022 <0.0022 0.0022 0.011 WWO-D-MACEMD-BED1 11/20/2007 <0.0031 <0.0031 0.0031 0.016 WWO-D-MACEMD-PT 8/8/2007 0.54 0.52 0.0012 0.0062 WWO-D-MACEMD-BED1 8/8/2007 <0.0012 <0.0012 0.0012 0.0062 WWO-D-MACEMD-BED1 5/25/2007 <0.0027 <0.0027 0.0027 0.013 WWO-D-MACEMD-BED1 2/16/2007 <0.0010 <0.0010 0.0010 0.0051 WWO-D-MACEMD-BED1 12/6/2006 <0.0018 <0.0018 0.0018 0.0090 WWO-D-MACEMD-BED1 8/24/2006 <0.0026 <0.0026 0.0026 0.013 WWO-D-MACEMD-BED1-2 8/24/2006 <0.0026 <0.0026 0.0026 0.013 WWO-D-MACEMD-PT 6/19/2006 0.494 0.474 0.0012 0.006 WWO-D-MACEMD-BED1 6/19/2006 NQ NQ 0.0012 0.006 WWO-D-MACEMD-BED2 6/19/2006 <0.0026 <0.0026 0.0026 0.013 WWO-D-16691 3/4/2005 0.582 0.559 0.01 0.05

ResidenLHWA othe resiremoveResidenLHWA othe resiremove

2/3/10 Page 4 of 5 
Table 4.6

Status of Residents Qualified for GAC Treatment Receiving Alternative Treatment or Not Being Samp

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER DATESMPL APFO 

(ppb or ug/L)

 *PFOA (ppb or ug/L)

**LOD (ppb or ug/L)

**LOQ (ppb or ug/L)

Comme

MooreT WWO-D-MOORET-BED1 6/18/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-MOORET-BED1 2/9/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-MOORET-BED1 11/26/2008 <0.0017 <0.0017 0.0017 0.0085 WWO-D-MOORET-PT 9/9/2008 0.64 0.61 0.0023 0.012 WWO-D-MOORET-BED1 9/9/2008 <0.0023 <0.0023 0.0023 0.012 WWO-D-MOORET-BED1 4/8/2008 <0.0019 <0.0019 0.0019 0.0096 WWO-D-MOORET-BED1 2/6/2008 <0.0022 <0.0022 0.0022 0.011WWO-D-MOORET-BED1 11/15/2007 <0.0031 <0.0031 0.0031 0.016WWO-D-MOORET-PT 8/2/2007 0.73 0.7 0.0012 0.0062WWO-D-MOORET-BED1 8/2/2007 <0.0012 <0.0012 0.0012 0.0062WWO-D-MOORET-BED1 5/15/2007 <0.0027 <0.0027 0.0027 0.013WWO-D-MOORET-BED1 2/1/2007 <0.0010 <0.0010 0.001 0.0051WWO-D-MOORET-BED1 11/2/2006 <0.0018 <0.0018 0.0018 0.009WWO-D-MOORET-BED1 8/15/2006 <0.0026 <0.0026 0.0026 0.013WWO-D-MOORET-PT 5/18/2006 0.601 0.578 0.0012 0.006WWO-D-MOORET-BED1 5/18/2006 <0.0012 <0.0012 0.0012 0.006WWO-D-16754 10/3/2005 0.704 0.676 0.0028 0.0134

NullWH WWO-D-NULLWH-PT 7/31/2008 1.5 1.4 0.023 0.12 

WWO-D-NULLWH-BED1 7/31/2008 <0.0023 <0.0023 0.0023 0.012 WWO-D-NULLWH-BED1 6/23/2008 <0.0019 <0.0019 0.0019 0.0096 WWO-D-NULLWH-BED1 2/13/2008 <0.0022 <0.0022 0.0022 0.011 WWO-D-NULLWH-BED1 12/15/2007 <0.0031 <0.0031 0.0031 0.016 WWO-D-NULLWH-BED1-2 12/15/2007 <0.0031 <0.0031 0.0031 0.016 WWO-D-NULLWH-PT 8/16/2007 1.0 0.98 0.0012 0.0062 WWO-D-NULLWH-BED1 8/16/2007 <0.0012 <0.0012 0.0012 0.0062 WWO-D-NULLWH-BED1 6/1/2007 <0.0027 <0.0027 0.0027 0.013 WWO-D-NULLWH-BED1-2 6/1/2007 <0.0027 <0.0027 0.0027 0.013 WWO-D-NULL-BED1 2/19/2007 <0.0010 <0.0010 0.0010 0.0051 WWO-D-NULLWH-BED1 12/19/2006 <0.0018 <0.0018 0.0018 0.0090 WWO-D-NULLWH-BED1 8/21/2006 <0.0026 <0.0026 0.0026 0.013 WWO-D-NULLWH-PT 5/17/2006 1.21 1.16 0.012 0.06 WWO-D-NULLWH-BED1 5/17/2006 <0.0012 <0.0012 0.0012 0.006 WWO-D-1008939 10/3/2005 1.83 1.76 0.014 0.067

ResidenLHWA othe resiremoveResidenLHWA oresidenremove

2/3/10 Page 5 of 5 
Table 4.8

Order on Consent Phase I - Historic and GAC System Samples

Quarterly MOU Progress Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER DATESMPL

 APFO 

(ppb or 

ug/L)

 PFOA 

(ppb or 

ug/L)

*LOD 

(ppb or 

ug/L)

*LOQ 

(ppb or 

ug/L)

BonarA WWO-D-BONARA-PT 9/3/2009 2.6 2.5 0.026 0.13 

WWO-D-BONARA-BED1 9/3/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-BONARA-BED1 6/9/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-BONARA-BED1 2/25/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-BONARA-BED1 12/4/2008 <0.0017 <0.0017 0.0017 0.0085 

WWO-D-BONARA-PT 7/29/2008 2.1 2.0 0.023 0.12 

WWO-D-BONARA-BED1 7/29/2008 <0.0023 <0.0023 0.0023 0.012 

WWO-D-BONARA-BED1 4/11/2008 <0.0019 <0.0019 0.0019 0.0096 

WWO-D-BONARA-BED1 1/7/2008 <0.0022 <0.0022 0.0022 0.011 

WWO-D-BONARA-PT 10/11/2007 1.9 1.8 0.031 0.16 

WWO-D-BONARA-BED1 10/11/2007 <0.0031 <0.0031 0.0031 0.016 

WWO-D-SnodgrassAM 6/6/2007 2 1.9 <0.0027 <0.013

CraynonT& WWK-D-CRAYNONTL-PT 9/21/2009 0.83 0.80 0.0026 0.013 

WWK-D-CRAYNONTL-BED1 9/21/2009 <0.0026 <0.0026 0.0026 0.013 

WWK-D-CRAYNONTL-BED1 6/30/2009 <0.0026 <0.0026 0.0026 0.013 

WWK-D-CRAYNONTL-BED1 3/6/2009 <0.0026 <0.0026 0.0026 0.013 

WWK-D-CRAYNONTL-BED1 11/5/2008 <0.0017 <0.0017 0.0017 0.0085 

WWK-D-CRAYNONTL-PT 8/15/2008 0.91 0.87 0.0023 0.012 

WWK-D-CRAYNONTL-BED1 8/15/2008 <0.0023 <0.0023 0.0023 0.012 

WWK-D-CRAYNONTL-BED1 6/14/2008 <0.0019 <0.0019 0.0019 0.0096 

WWK-D-CRAYNONTL-BED1 2/27/2008 NQ NQ 0.0022 0.011 

WWK-D-CRAYNONTL-BED2 2/27/2008 <0.0022 <0.0022 0.0022 0.011 

WWK-D-CRAYNONTL-BED1 11/20/2007 <0.0031 <0.0031 0.0031 0.016 

WWK-D-CRAYNONTL-PT 7/23/2007 1.0 0.96 0.0012 0.0062 

WWK-D-CRAYNONTL-BED1 7/23/2007 <0.0012 <0.0012 0.0012 0.0062 

WWK-D-CraynonT 1/31/2005 0.945 0.907 0.01 0.05

DavisKL WWO-D-DAVISKL-PT 9/17/2009 0.74 0.71 0.0026 0.013 

WWO-D-DAVISKL-BED1 9/17/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-DAVISKL-BED1 6/12/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-DAVISKL-BED1 2/26/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-DAVISKL-BED1 12/4/2008 <0.0017 <0.0017 0.0017 0.0085 

WWO-D-DAVISKL-PT 7/29/2008 0.59 0.57 0.0023 0.012 

WWO-D-DAVISKL-BED1 7/29/2008 <0.0023 <0.0023 0.0023 0.012 

WWO-D-DAVISKL-BED1 4/11/2008 <0.0050 <0.0050 0.0050 0.025 

WWO-D-DAVISKL-BED1 1/8/2008 <0.0022 <0.0022 0.0022 0.011 

WWO-D-DAVISKL-PT 10/11/2007 0.66 0.63 0.0031 0.016 

WWO-D-DAVISKL-BED1 10/11/2007 <0.0031 <0.0031 0.0031 0.016 

WWO-D-DavisKL 5/7/2007 0.8 0.77 <0.0027 <0.013

EllenwoodSM WWO-D-ELLENWOODSM-PT 9/3/2009 1.9 1.8 0.026 0.13 

WWO-D-ELLENWOODSM-BED1 9/3/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-ELLENWOODSM-BED1 6/9/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-ELLENWOODSM-BED1 2/25/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-ELLENWOODSM-BED1 10/31/2008 <0.0017 <0.0017 0.0017 0.0085 

WWO-D-ELLENWOODSM-PT 7/29/2008 1.5 1.4 0.023 0.12 

WWO-D-ELLENWOODSM-BED1 7/29/2008 <0.0023 <0.0023 0.0023 0.012 

WWO-D-ELLENWOODSM-BED1 4/11/2008 <0.0050 <0.0050 0.0050 0.025 

WWO-D-ELLENWOODSM-BED1 1/7/2008 <0.0022 <0.0022 0.0022 0.011 

WWO-D-ELLENWOODSM-PT 10/12/2007 1.5 1.4 0.031 0.16 

WWO-D-ELLENWOODSM-BED1 10/12/2007 <0.0031 <0.0031 0.0031 0.016 

WWO-D-EllenwoodSM 5/7/2007 1.3 1.2 <0.0027 <0.013

2/3/10 Page 1 of 5 Table 4.8
Table 4.8

Order on Consent Phase I - Historic and GAC System Samples

Quarterly MOU Progress Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER DATESMPL

 APFO 

(ppb or 

ug/L)

 PFOA 

(ppb or 

ug/L)

*LOD 

(ppb or 

ug/L)

*LOQ 

(ppb or 

ug/L)

FarleyMD WWO-D-FARLEYMD-PT 9/4/2009 0.73 0.70 0.0026 0.013 

WWO-D-FARLEYMD-BED1 9/4/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-FARLEYMD-BED1 6/12/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-FARLEYMD-BED1 2/26/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-FARLEYMD-BED1 12/8/2008 <0.0017 <0.0017 0.0017 0.0085 

WWO-D-FARLEYMD-PT 7/29/2008 0.50 0.48 0.0023 0.012 

WWO-D-FARLEYMD-BED1 7/29/2008 <0.0023 <0.0023 0.0023 0.012 

WWO-D-FARLEYMD-BED1 4/11/2008 <0.0050 <0.0050 0.0050 0.025 

WWO-D-FARLEYMD-BED1 1/8/2008 <0.0022 <0.0022 0.0022 0.011 

WWO-D-FARLEYMD-PT 10/11/2007 0.54 0.52 0.0031 0.016 

WWO-D-FARLEYMD-BED1 10/11/2007 <0.0031 <0.0031 0.0031 0.016 

WWO-D-FarleyMD 5/11/2007 0.61 0.59 <0.0027 <0.013

Gotshall** WWO-D-2725BEACHDR-BED1 10/26/2009 <0.0033 <0.0033 0.0033 0.016 

WWO-D-2725BEACHDR-PT 9/4/2009 2.1 2.0 0.026 0.13 

WWO-D-2725BEACHDR-BED1 9/4/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-2725BEACHDR-BED1 4/14/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-2725BEACHDR-BED1 10/31/2008 <0.0017 <0.0017 0.0017 0.0085 

WWO-D-2725BEACHDR-BED1-2 10/31/2008 <0.0017 <0.0017 0.0017 0.0085 

WWO-D-2725BEACHDR-PT 8/19/2008 2.3 2.2 0.023 0.12 

WWO-D-2725BEACHDR-BED1 8/19/2008 <0.0023 <0.0023 0.0023 0.012 

WWO-D-2725BEACHDR-BED1 6/13/2008 <0.0019 <0.0019 0.0019 0.0096 

WWO-D-2725BEACHDR-PT 10/11/2007 2.3 2.2 0.031 0.16 

WWO-D-2725BEACHDR-BED1 10/11/2007 <0.0031 <0.0031 0.0031 0.016 

WWO-D-FosterTV 8/14/2002 0.812 0.78 0.01 0.05

HosingerMD WWO-D-HOSINGERMD-PT 9/3/2009 1.1 1.1 0.026 0.13 

WWO-D-HOSINGERMD-BED1 9/3/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-HOSINGERMD-BED1 6/9/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-HOSINGERMD-BED1 2/26/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-HOSINGERMD-BED1 11/11/2008 <0.0017 <0.0017 0.0017 0.0085 

WWO-D-HOSINGERMD-PT 7/29/2008 0.93 0.89 0.0023 0.012 

WWO-D-HOSINGERMD-BED1 7/29/2008 <0.0023 <0.0023 0.0023 0.012 

WWO-D-HOSINGERMD-BED1 4/7/2008 NQ NQ 0.0019 0.0096 

WWO-D-HOSINGERMD-BED2 4/7/2008 NQ NQ 0.0019 0.0096 

WWO-D-HOSINGERMD-BED1 1/7/2008 NQ NQ 0.0022 0.011 

WWO-D-HOSINGERMD-BED2 1/7/2008 <0.0022 <0.0022 0.0022 0.011 

WWO-D-HOSINGERMD-PT 11/20/2007 1.0 0.99 0.0031 0.016 

WWO-D-HOSINGERMD-BED1 11/20/2007 <0.0031 <0.0031 0.0031 0.016 

WWO-D-HosingerMD 6/21/2007 1 1 <0.0012 <0.0062

MoorePE WWO-D-MOOREPE-PT 9/17/2009 0.025 0.024 0.0026 0.013 

WWO-D-MOOREPE-BED1 9/17/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-MOOREPE-BED1 6/11/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-MOOREPE-BED1 2/25/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-MOOREPE-BED1 12/11/2008 <0.0017 <0.0017 0.0017 0.0085 

WWO-D-MOOREPE-PT 7/29/2008 0.092 0.088 0.0023 0.012 

WWO-D-MOOREPE-PT-2 7/29/2008 0.086 0.083 0.0023 0.012 

WWO-D-MOOREPE-BED1 7/29/2008 <0.0023 <0.0023 0.0023 0.012 

WWO-D-MOOREPE-BED1-2 7/29/2008 <0.0023 <0.0023 0.0023 0.012 

WWO-D-MOOREPE-BED1 4/11/2008 <0.0050 <0.0050 0.0050 0.025 

WWO-D-MOOREPE-BED1 1/10/2008 <0.0022 <0.0022 0.0022 0.011 

WWO-D-MOOREPE-PT 10/12/2007 0.019 0.018 0.0031 0.016 

2/3/10 Page 2 of 5 Table 4.8
Table 4.8

Order on Consent Phase I - Historic and GAC System Samples

Quarterly MOU Progress Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER DATESMPL

 APFO 

(ppb or 

ug/L)

 PFOA 

(ppb or 

ug/L)

*LOD 

(ppb or 

ug/L)

*LOQ 

(ppb or 

ug/L)

WWO-D-MOOREPE-BED1 10/12/2007 <0.0031 <0.0031 0.0031 0.016 

WWO-D-MoorePE 5/24/2007 0.76 0.73 <0.0027 <0.013

MooreSE WWO-D-MOORESE-PT 9/3/2009 1.1 1.1 0.026 0.13 

WWO-D-MOORESE-BED1 9/3/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-MOORESE-BED1 6/9/2009 NQ NQ 0.0026 0.013 

WWO-D-MOORESE-BED2 6/9/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-MOORESE-BED1 2/26/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-MOORESE-BED1 11/11/2008 <0.0017 <0.0017 0.0017 0.0085 

WWO-D-MOORESE-BED1 11/11/2008 <0.0017 <0.0017 0.0017 0.0085 

WWO-D-MOORESE-PT 7/29/2008 0.82 0.79 0.0023 0.012 

WWO-D-MOORESE-BED1 7/29/2008 <0.0023 <0.0023 0.0023 0.012 

WWO-D-MOORESE-BED1 4/7/2008 <0.0019 <0.0019 0.0019 0.0096 

WWO-D-MOORESE-BED1 1/7/2008 <0.0022 <0.0022 0.0022 0.011 

WWO-D-MOORESE-PT 10/11/2007 1.4 1.3 0.031 0.16 

WWO-D-MOORESE-BED1 10/11/2007 <0.0031 <0.0031 0.0031 0.016 

WWO-D-MooreSE 5/23/2007 1 1 <0.0027 <0.013

MooreMK WWO-D-MOOREMK-PT 9/17/2009 2.1 2.0 0.026 0.13 

WWO-D-MOOREMK-BED1 9/17/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-MOOREMK-BED1 6/11/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-MOOREMK-BED1 2/25/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-MOOREMK-BED1 12/11/2008 <0.0017 <0.0017 0.0017 0.0085 

WWO-D-MOOREMK-PT 7/29/2008 1.8 1.7 0.023 0.12 

WWO-D-MOOREMK-BED1 7/29/2008 <0.0023 <0.0023 0.0023 0.012 

WWO-D-MOOREMK-BED1 4/11/2008 <0.0050 <0.0050 0.0050 0.025 

WWO-D-MOOREMK-BED1 1/10/2008 <0.0022 <0.0022 0.0022 0.011 

WWO-D-MOOREMK-PT 10/12/2007 1.8 1.7 0.031 0.16 

WWO-D-MOOREMK-BED1 10/12/2007 <0.0031 <0.0031 0.0031 0.016 

WWO-D-MooreMK 5/24/2007 1.8 1.7 <0.0027 <0.013

RaderJM WWO-D-RADERJM-PT 9/3/2009 0.11 0.11 0.0026 0.013 

WWO-D-RADERJM-BED1 9/3/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-RADERJM-BED1 6/9/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-RADERJM-BED1 2/13/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-RADERJM-BED1 11/11/2008 <0.0017 <0.0017 0.0017 0.0085 

WWO-D-RADERJM-PT 7/29/2008 0.33 0.32 0.0023 0.012 

WWO-D-RADERJM-BED1 7/29/2008 <0.0023 <0.0023 0.0023 0.012 

WWO-D-RADERJM-BED1 4/11/2008 <0.0019 <0.0019 0.0019 0.0096 

WWO-D-RADERJM-BED1 1/7/2008 <0.0022 <0.0022 0.0022 0.011 

WWO-D-RADERJM-PT 10/12/2007 0.10 0.099 0.0031 0.016 

WWO-D-RADERJM-BED1 10/12/2007 <0.0031 <0.0031 0.0031 0.016 

WWO-D-RaderJM 4/26/2007 0.55 0.53 <0.0027 <0.013

SchofieldKA WWO-D-SCHOFIELDKA-PT 9/3/2009 1.9 1.8 0.026 0.13 

WWO-D-SCHOFIELDKA-BED1 9/3/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-SCHOFIELDKA-BED1 6/9/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-SCHOFIELDKA-BED1-2 6/9/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-SCHOFIELDKA-BED1 2/26/2009 NQ NQ 0.0026 0.013 

WWO-D-SCHOFIELDKA-BED2 2/26/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-SCHOFIELDKA-BED1 11/11/2008 <0.0017 <0.0017 0.0017 0.0085 

WWO-D-SCHOFIELDKA-PT 7/29/2008 1.1 1.1 0.023 0.12 

WWO-D-SCHOFIELDKA-BED1 7/29/2008 <0.0023 <0.0023 0.0023 0.012 

WWO-D-SCHOFIELDKA-BED1 4/7/2008 NQ NQ 0.0019 0.0096 

2/3/10 Page 3 of 5 Table 4.8
Table 4.8

Order on Consent Phase I - Historic and GAC System Samples

Quarterly MOU Progress Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER DATESMPL

 APFO 

(ppb or 

ug/L)

 PFOA 

(ppb or 

ug/L)

*LOD 

(ppb or 

ug/L)

*LOQ 

(ppb or 

ug/L)

WWO-D-SCHOFIELDKA-BED2 4/7/2008 <0.0019 <0.0019 0.0019 0.0096 

WWO-D-SCHOFIELDKA-BED1 1/7/2008 <0.0022 <0.0022 0.0022 0.011 

WWO-D-SCHOFIELDKA-PT 10/11/2007 1.6 1.5 0.031 0.16 

WWO-D-SCHOFIELDKA-BED1 10/11/2007 <0.0031 <0.0031 0.0031 0.016 

WWO-D-SchofieldKA 5/22/2007 1.2 1.2 <0.0027 <0.013

SmithD (Blennerhassett WWK-D-WINTERWELLBHI-BED1 12/8/2009 <0.0021 <0.0021 0.0021 0.010 

Island) WWK-D-WINTERWELLBHI-BED1-2 12/8/2009 <0.0021 <0.0021 0.0021 0.010 

WWK-D-WINTERWELLBHI-PT 9/18/2009 0.050 0.048 0.0026 0.013 

WWK-D-WINTERWELLBHI-PT-2 9/18/2009 0.050 0.048 0.0026 0.013 

WWK-D-WINTERWELLBHI-BED1 9/18/2009 <0.0026 <0.0026 0.0026 0.013 

WWK-D-WINTERWELLBHI-BED1-2 9/18/2009 <0.0026 <0.0026 0.0026 0.013 

WWK-D-WINTERWELLBHI-BED1 6/22/2009 <0.0026 <0.0026 0.0026 0.013 

WWK-D-WINTERWELLBHI-BED1 3/6/2009 <0.0026 <0.0026 0.0026 0.013 

WWK-D-WINTERWELLBHI-BED1 11/5/2008 <0.0017 <0.0017 0.0017 0.0085 

WWK-D-WINTERWELLBHI-PT 8/15/2008 0.034 0.033 0.0023 0.012 

WWK-D-WINTERWELLBHI-BED1 8/15/2008 <0.0023 <0.0023 0.0023 0.012 

WWK-D-WINTERWELLBHI-BED1 6/13/2008 <0.0019 <0.0019 0.0019 0.0096 

WWK-D-WINTERWELLBHI-BED1 2/25/2008 <0.0022 <0.0022 0.0022 0.011 

WWK-D-WINTERWELL-BHI-BED1 10/11/2007 <0.0031 <0.0031 0.0031 0.016 

WWK-D-WINTERWELLBHI-PT 7/25/2007 0.055 0.053 0.0012 0.0062 

WWK-D-WINTERWELLBHI-BED1 7/25/2007 <0.0012 <0.0012 0.0012 0.0062 

Winter Well-BHI 4/7/2006 0.611 0.587 0.0012 0.006

BLENISLEPS1 7/14/2005 0.034 0.033 0.01 0.05

BLENISLEPS1 1/30/2002 0.165 0.158 0.01 0.05

SmithDD WWO-D-SMITHDD-BED1 9/21/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-SMITHDD-BED1 3/6/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-SMITHDD-BED1 12/8/2008 <0.0017 <0.0017 0.0017 0.0085 

WWO-D-SMITHDD-PT 9/5/2008 3.4 3.3 0.023 0.12 

WWO-D-SMITHDD-BED1 9/5/2008 <0.0023 <0.0023 0.0023 0.012 

WWO-D-SMITHDD-BED1 4/11/2008 <0.0019 <0.0019 0.0019 0.0096 

WWO-D-SMITHDD 12/10/2007 4.1 3.9 0.031 0.16

WWO-D-SMITH DD 7/31/2002 1.81 1.74 0.5

TumeyMJ WWO-D-TUMEYMJ-PT 9/3/2009 0.75 0.72 0.0026 0.013 

WWO-D-TUMEYMJ-PT-2 9/3/2009 0.71 0.68 0.0026 0.013 

WWO-D-TUMEYMJ-BED1 9/3/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-TUMEYMJ-BED1-2 9/3/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-TUMEYMJ-BED1 6/9/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-TUMEYMJ-BED1 2/13/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-TUMEYMJ-BED1 12/4/2008 <0.0017 <0.0017 0.0017 0.0085 

WWO-D-TUMEYMJ-PT 8/19/2008 0.55 0.53 0.0023 0.012 

WWO-D-TUMEYMJ-BED1 8/19/2008 <0.0023 <0.0023 0.0023 0.012 

WWO-D-TUMEYMJ-BED1 4/11/2008 <0.0019 <0.0019 0.0019 0.0096 

WWO-D-TUMEYMJ-BED1-2 4/11/2008 <0.0019 <0.0019 0.0019 0.0096 

WWO-D-TUMEYMJ-BED1 1/7/2008 <0.0022 <0.0022 0.0022 0.011 

WWO-D-TUMEYMJ-PT 11/20/2007 0.53 0.51 0.0031 0.016 

WWO-D-TUMEYMJ-BED1 11/20/2007 <0.0031 <0.0031 0.0031 0.016 

WWO-D-TumeyMJ 5/18/2007 0.63 0.61 <0.0027 <0.013

WerryRC WWO-D-WERRYRC-PT 9/3/2009 0.53 0.51 0.0026 0.013 

WWO-D-WERRYRC-BED1 9/3/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-WERRYRC-BED1 6/9/2009 <0.0026 <0.0026 0.0026 0.013 

2/3/10 Page 4 of 5 Table 4.8
Table 4.8

Order on Consent Phase I - Historic and GAC System Samples

Quarterly MOU Progress Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER DATESMPL

 APFO 

(ppb or 

ug/L)

 PFOA 

(ppb or 

ug/L)

*LOD 

(ppb or 

ug/L)

*LOQ 

(ppb or 

ug/L)

WWO-D-WERRYRC-BED1 2/13/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-WERRYRC-BED1 11/11/2008 <0.0017 <0.0017 0.0017 0.0085 

WWO-D-WERRYRC-PT 7/29/2008 0.42 0.40 0.0023 0.012 

WWO-D-WERRYRC-BED1 7/29/2008 <0.0023 <0.0023 0.0023 0.012 

WWO-D-WERRYRC-BED1 4/11/2008 <0.0019 <0.0019 0.0019 0.0096 

WWO-D-WERRYRC-BED1 1/7/2008 <0.0022 <0.0022 0.0022 0.011 

WWO-D-WERRYRC-PT 10/12/2007 0.59 0.57 0.0031 0.016 

WWO-D-WERRYRC-BED1 10/12/2007 <0.0031 <0.0031 0.0031 0.016 

WWO-D-WerryRC 5/8/2007 0.76 0.73 <0.0027 <0.013

WigalGI WWO-D-WIGALGI-PT 9/3/2009 2.4 2.3 0.026 0.13 

WWO-D-WIGALGI-BED1 9/3/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-WIGALGI-BED1 6/4/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-WIGALGI-BED1 2/25/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-WIGALGI-BED1 12/4/2008 <0.0017 <0.0017 0.0017 0.0085 

WWO-D-WIGALGI-PT 8/15/2008 2.3 2.2 0.023 0.12 

WWO-D-WIGALGI-BED1 8/15/2008 <0.0023 <0.0023 0.0023 0.012 

WWO-D-WIGALGI-BED1 4/11/2008 <0.0019 <0.0019 0.0019 0.0096 

WWO-D-WIGALGI-BED1 1/7/2008 <0.0022 <0.0022 0.0022 0.011 

WWO-D-WIGALGI-PT 10/12/2007 2.8 2.7 0.031 0.16 

WWO-D-WIGALGI-BED1 10/12/2007 <0.0031 <0.0031 0.0031 0.016 

WWO-D-WigalGI 5/21/2007 2.3 2.2 <0.0027 <0.013

*Starting in July 2005, Limit of Detection (LOD) and Limit of Quantitiation (LOQ) were determined on at least 

a quarterly basis using the signal to noise determination described in the Phase II QAPP. 

& Resident passed away during 4Q09.

**Well is winterized and no samples taken during winter months.

2/3/10 Page 5 of 5 Table 4.8
Table 4.8A

Status of Order on Consent Phase I Residents Qualified for GAC Treatment Receiving Alternative Treat

Quarterly MOU Status Report No. 17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER DATESMPL

 APFO (ppb or ug/L)

 *PFOA (ppb or ug/L)

**LOD (ppb or ug/L)

**LOQ (ppb or ug/L) Comme

WetzEO1620 WWO-D-WETZEO1620-BED1 6/12/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-WETZEO1620-BED1 2/26/2009 <0.0026 <0.0026 0.0026 0.013 WWO-D-WETZEO1620-BED1 12/4/2008 <0.0017 <0.0017 0.0017 0.0085 WWO-D-WETZEO1620-PT 7/29/2008 0.52 0.50 0.0023 0.012 WWO-D-WETZEO1620-BED1 7/29/2008 <0.0023 <0.0023 0.0023 0.012 WWO-D-WETZEO1620-BED1 4/11/2008 <0.0019 <0.0019 0.0019 0.0096

 WWO-D-WETZEO1620-BED1 1/8/2008 <0.0022 <0.0022 0.0022 0.011

WWO-D-WETZEO1620-PT 10/11/2007 0.64 0.61 0.0031 0.016WWO-D-WETZEO1620-BED1 10/11/2007 <0.0031 <0.0031 0.0031 0.016WWO-D-WetzEO1620 5/3/2007 0.51 0.49 <0.0027 <0.013

ResidenWarren Associaand the was rem

2/3/10 Page 1 of 1 
Table 4.9

Status of Private Water Systems Identified by EPA and DuPont (March 2009 Order on Consent) 

Quarterly MOU Progress Report #17

DuPont Washington Works (OPPT-2004-0113)

SRCNAME DATESMPL SAMPLE_NUMBER

PFOA 

RsltPost Comments Updated Status as of 01/12/10

BaldersonB 8/29/2005 DRL-D-1017738 0.453 GAC offered GAC treatment system installed 5/12/09 

and added to monitoring program

BEDILIONJM 6/13/2007 WWO-D-BEDILIONJM 0.47 already has GAC treatment installed Kinetico GAC system installed by owner 

[5/13/09 PT = 0.55 ug/L, AT = ND 

(<0.00260 ug/l)]

BURNSCC 6/4/2007 WWO-D-BURNSCC 1 GAC offered 6/25/09 Ali learned that Benjamin Burns 

(grandson) has had ownership of house 

since March 2009 and wants PWS, but 

PWS lines are far from house, GAC letter 

delivered 7/27/09, Ali left message on 

9/8/09, bottled water being delivered as of 

9/9/09, Ali left message 10/28/09 

CantleyWA 7/19/2002 WWO-D-CANTLEY WA 1.43 non-response, qualification to be 

determined

pre-911 address and phone not in 

service, address to Crystal Springs, note 

from Ali - "We also delivered the 

envelope to William Cantley, but he was 

not very approchable. When we asked 

him to please give Robin a call he backed 

away and said "will try to" and shut the 

door. We did not get to confirm the new 

address, but a mailbox across the street 

was 1016 Gantsville Road. Robin, if you 

ever have to go to this house, make sure 

to bring someone along." Andrew notified 

EPA of unsafe situation, EPA in 

agreement to make no additional contact 

in person, but to follow up via letter.

ConleyL (29450) 12/30/2004 WWO-D-1009054 0.474 GAC offered GAC treatment system installed 4/2/09 

and added to monitoring program

ConleyL2 (29470) 3/5/2009 WWO-D-CONLEYL2 0.036 sampled under New Order on 

Consent - not qualified

not qualified for treatment, result <0.4 

ug/L

ENGLANDTK 6/1/2007 WWO-D-ENGLANDTK 0.4 non-response non-response to all contact attempts, final 

non-response letter sent 8/11/09

FouttyBL 3/19/2002 WWK-D-FOUTT BL 0.864 PWS connection offered connection to Lubeck PWS on 11/25/09

GOODWINJE 5/8/2007 WWO-D-GOODWINJE 0.44 GAC offered if resident connects 

well to household plumbing

Uses bucket to get well water, cistern 

filled w/ Belpre water plumbed to house, 

Andrew discussed with EPA. DuPont will 

send letter offering treatment on well if 

well connected to household plumbing.

GrimRR 7/30/2002 WWO-D-GRIM RR 0.481 GAC offered GAC treatment system installed 4/2/09 

and added to monitoring program

HOLDRENRE 6/1/2007 WWO-D-HOLDRENRE 1.1 GAC offered GAC treatment system installed 7/1/09 

and added to monitoring program

KnoxJ 12/9/2005 WWK-D-16804 0.619 declined treatment decline all treatment, decline letter signed 

4/17/09

LakeWashC2 1/15/2002 WWK-G-LAKE WASH C2 0.833 not qualified building was torn down and the well is not 

in service

LAFRANCEMA 6/13/2007 WWO-D-LAFRANCEMA 0.48 GAC offered installation of GAC on hold, bacteria 

issue yet to be resolved by resident, nonresponse to all attempts to contact, final 

non-response letter sent 8/12/09

LOWEJH 5/21/2007 WWO-D-LOWEJH 0.41 PWS connection offered connection to LHWA on 7/1/09

MerinarJL 9/23/2002 WWO-D-MERINAR JL 0.906 not qualified house has had PWS for several years

PhillipsAE 4/25/2002 WWK-D-PHILIPS AE 0.7 not qualified residence connected to PWS prior to 

selling to new owner, well no longer in 

use

REALLDD 4/26/2007 WWO-D-REALLDD 0.46 non-response verbally accepted GAC offer, then 

verbally declined all treatment, decline 

letter mailed 6/23/09, no response to calls 

and messages, final non-response letter 

sent 9/10/09

SmithMT 2/5/2002 WWK-D-SMITH MT 1.28 GAC offered GAC treatment system installed 7/30/09 

and added to monitoring program

SPRAGUEBE 10/24/2007 WWO-D-SPRAGUEBE 0.4 GAC offered GAC treatment system installed 5/12/09 

and added to monitoring program

TURNERDA 5/9/2007 WWO-D-TURNERDA 0.43 GAC offered GAC treatment system installed 4/29/09 

and added to monitoring program

WAGGONERJL 5/1/2007 WWO-D-WAGGONERJL 0.41 GAC offered GAC treatment system installed 8/24/09 

and added to monitoring program

2/3/10 Page 1 of 1 Table 4.9
Table 4.10

March 2009 Order on Consent - Historic and GAC System Samples

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

RESIDENT SAMPLE_NUMBER# DATESMPL APFO (ug/L) PFOA (ug/L) *LOD *LOQ

BaldersonB WWK-D-BALDERSONB-PT 9/22/2009 0.43 0.41 0.0026 0.013 

WWK-D-BALDERSONB-BED1 9/22/2009 <0.0026 <0.0026 0.0026 0.013 

WWK-D-BALDERSONB-BED1 6/12/2009 <0.0026 <0.0026 0.0026 0.013 

DRL-D-1017738 8/29/2005 0.453

ConleyL WWO-D-CONLEYL-PT 9/17/2009 0.84 0.81 0.0026 0.013 

WWO-D-CONLEYL-BED1 9/17/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-CONLEYL-BED1 4/2/2009 <0.0043 <0.0043 0.0043 0.021 

WWO-D-1009054 12/30/2004 0.494 0.474 0.01 0.05

GrimRR WWO-D-GRIMRR-PT 9/3/2009 1.5 1.4 0.026 0.13 

WWO-D-GRIMRR-BED1 9/3/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-GRIMRR-BED1 4/2/2009 <0.0043 <0.0043 0.0043 0.021 

WWO-D-GRIM RR 7/30/2002 0.501 0.481 0.01 0.05

HOLDRENRE WWO-D-HOLDRENRE-PT 9/17/2009 1.7 1.6 0.026 0.13 

WWO-D-HOLDRENRE-BED1 9/17/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-HOLDRENRE-BED1 7/1/2009 NQ NQ 0.0026 0.013 

WWO-D-HOLDRENRE-BED2 7/1/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-HOLDRENRE 6/1/2007 1.1 1.1 0.0027 0.013

SmithMT

WWK-D183WASHINGTONCLUBDR-PT 9/21/2009 2.0 1.9 0.033 0.16 

WWK-D183WASHINGTONCLUBDR- 9/21/2009 <0.0026 <0.0026 0.0026 0.013 

WWK-D-SMITH MT 2/5/2002 1.33 1.28 0.01 0.05

SPRAGUEBE WWO-D-SPRAGUEBE-PT 9/17/2009 0.65 0.62 0.0026 0.013 

WWO-D-SPRAGUEBE-BED1 9/17/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-SPRAGUEBE-BED1 6/10/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-SPRAGUEBE 10/24/2007 0.42 0.4 0.0031 0.016

TURNERDA WWO-D-TURNERDA-PT 9/21/2009 0.50 0.48 0.0026 0.013 

WWO-D-TURNERDA-BED1 9/21/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-TURNERDA-BED1 6/11/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-TURNERDA 5/9/2007 0.45 0.43 0.0027 0.013

WAGGONERJL WWO-D-WAGGONERJL-PT 9/22/2009 0.53 0.51 0.0026 0.013 

WWO-D-WAGGONERJL-BED1 9/22/2009 <0.0026 <0.0026 0.0026 0.013 

WWO-D-WAGGONERJL 5/1/2007 0.43 0.41 0.0027 0.013

*Starting in July 2005, Limit of Detection (LOD) and Limit of Quantitiation (LOQ) were determined on at least a quarterly 

basis using the signal to noise determination described in the Phase II QAPP. 

2/3/10 Page 1 of 1 Table 4.10
Table 5.1

Local Landfill Monitoring Well Construction and Groundwater Elevation Data

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

B-Zone 

Parameters MW4 MW6 MW9 MW10 MW12B* MW11A* MW13B* Measuring Point Elevation (feet) 847.55 796.27 788.54 805.94 764.28 663.83 750.80 Total Depth (feet) 157.10 93.09 81.39 87.75 94.94 42.37 139.87 Well Diameter (inches) 4 4 4 4 2 2 2Slot Size (inches) 0.020 0.020 0.020 0.020 0.010 0.010 0.010 Screen Length (feet) 20 20 20 20 20 20 15 Screen Interval(feet)

710.45 - 

690.45

723.18 - 

703.18

727.15 - 

707.15

738.19 - 

718.19

689.34 - 

669.34

641.46 - 

621.46

625.93 - 

610.93

December-01 692.55 719.69 727.78 720.67 - - - January-02 715.39 720.41 728.06 720.51 - - - February-02 715.28 719.76 728.01 720.73 - - - March-02 715.31 722.00 728.12 720.90 - - - May-02 714.93 721.52 728.48 721.84 - - - August-02 715.52 719.77 728.24 722.97 - - - October-02 715.53 719.56 728.10 723.01 681.93 640.42 648.29 March-03 715.52 721.95 728.30 724.81 692.72 645.69 648.88 May-03 715.28 721.02 728.44 725.12 694.38 648.36 648.95 July-03 715.35 719.88 728.85 725.39 694.96 649.32 648.90 February-04 715.36 720.61 728.26 727.31 697.47 650.12 649.00 August-04 715.34 719.47 728.59 728.17 - - - November-04 715.29 720.03 728.38 727.61 - - - January-05 714.9 720.33 728.46 727.46 - - - July-05 715.36 719.53 728.67 728.43 696.33 642.40 648.30 January-06 715.35 719.96 728.13 727.87 - - - July-06 715.49 719.59 728.33 727.62 - - - January-07 715.36 721.35 727.34 728.11 - - - July-07 715.37 719.46 728.50 728.88 - - - April-08 715.37 719.89 728.79 728.36 - - - 

Monitoring Wells

A-Zone C-Zone

Groundwater Elevation (feet)

2/3/10 Page 1 of 2 
Table 5.1

Local Landfill Monitoring Well Construction and Groundwater Elevation Data

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

B-Zone 

Parameters MW4 MW6 MW9 MW10 MW12B* MW11A* MW13B* Measuring Point Elevation (feet) 847.55 796.27 788.54 805.94 764.28 663.83 750.80 Total Depth (feet) 157.10 93.09 81.39 87.75 94.94 42.37 139.87 Well Diameter (inches) 4 4 4 4 2 2 2Slot Size (inches) 0.020 0.020 0.020 0.020 0.010 0.010 0.010 Screen Length (feet) 20 20 20 20 20 20 15 Screen Interval(feet)

710.45 - 

690.45

723.18 - 

703.18

727.15 - 

707.15

738.19 - 

718.19

689.34 - 

669.34

641.46 - 

621.46

625.93 - 

610.93

Monitoring Wells

A-Zone C-Zone

Groundwater Elevation (feet)

September-08 715.44 719.41 728.31 728.12 695.77 642.58 648.16 January-09 715.48 720.05 728.27 727.43 696.03 644.78 648.79 September-09 715.38 719.42 728.22 728.46 695.81 643.42 648.74 *Well is not a required sampling location in current WV/NPDES permit. - Groundwater elevation not 

2/3/10 Page 2 of 2 
Table 5.2

Letart Landfill Monitoring Well Construction and Groundwater Elevation Data 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Zone 

Parameters MWL1 MWL7 MWL8 MWL15 MWL16 MWL17 MWL2A MWL11 MWL3A MWL4 MWLMeasuring Point Elevation (feet) 768.93 770.24 777.06 763.86 764.74 767.90 780.87 776.21 674.79 651.58 766Total Depth (feet) 31.50 36.73 40.60 20.10 30.00 30.15 182.17 166.54 59.59 28.66 152Well Diameter (inches) 244444444 2 4Slot Size (inches) 0.010 0.010 0.010 0.010 0.010 0.010 0.0Screen Length (feet) 5 10 9 10 10 10 30 25 5 5 20 Elevation ofScreen Interval(feet)

742.43 - 

737.43

743.51 - 

733.51

745.46 - 

736.46

757.058 - 

747.058

747.736 - 

737.736

750.552 - 

740.552

628.70 - 

598.70

634.67 - 

609.67

620.20 - 

615.20

627.92 - 

622.92

655.

635

December-01 752.62 749.73 745.04 NA NA 617.40 628.08 - January-02 752.82 752.25 746.76 622.19 619.58 616.76 642.79 - February-02 752.65 751.87 745.05 622.23 620.70 615.37 639.99 - March-02 752.10 751.56 746.24 622.44 620.99 614.80 643.30 - May-02 750.27 751.16 745.41 622.28 621.28 615.27 643.08 - August-02 751.98 751.49 744.95 622.44 621.52 615.54 636.02 - October-02 751.02 751.75 745.43 622.38 621.10 615.84 632.47 621March-03 750.10 751.72 745.60 622.27 621.53 616.31 643.06 629May-03 749.03 750.99 746.62 622.21 621.43 615.49 643.10 630August-03 748.89 751.09 745.11 622.49 621.79 616.59 641.11 630December-03 749.82 751.88 745.49 622.12 621.3 617.27 642.93 - February-04 750.66 751.86 745.47 622.18 621.60 617.16 642.66 632May-04 751.73 751.37 744.98 622.23 621.69 617.21 642.79 632August-04 750.45 751.61 744.64 622.38 621.50 618.89 638.09 - November-04 749.02 752.19 745.27 621.94 621.14 616.14 643.07 633January-05 749.67 752.19 745.27 622.59 621.76 615.12 643.05 633April-05 752.12 751.66 746.97 622.82 621.35 615.37 643.13 633

July-05 750.52 751.61 744.43 623.21 621.46 614.49 640.26 632October-05 749.93 752.29 745.48 622.13 620.97 dry 637.77 632February-06 748.67 752.39 745.55 622.34 620.97 - 643.06 633April-06 748.18 751.57 745.45 622.26 621.06 dry 642.99 632July-06 748.32 751.01 745.8 622.01 620.97 dry 642.52 632October-06 749.37 752.0 746.07 621.94 621.1 616.89 642.88 631

D/E-Zone 

Monitoring Wells

Groundwater Elevation (feet)

A-Zone D/E- and F-Zone

2/3/10 Page 1 of 2 
Table 5.2

Letart Landfill Monitoring Well Construction and Groundwater Elevation Data 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Zone 

Parameters MWL1 MWL7 MWL8 MWL15 MWL16 MWL17 MWL2A MWL11 MWL3A MWL4 MWLMeasuring Point Elevation (feet) 768.93 770.24 777.06 763.86 764.74 767.90 780.87 776.21 674.79 651.58 766Total Depth (feet) 31.50 36.73 40.60 20.10 30.00 30.15 182.17 166.54 59.59 28.66 152Well Diameter (inches) 244444444 2 4Slot Size (inches) 0.010 0.010 0.010 0.010 0.010 0.010 0.0Screen Length (feet) 5 10 9 10 10 10 30 25 5 5 20 Elevation ofScreen Interval(feet)

742.43 - 

737.43

743.51 - 

733.51

745.46 - 

736.46

757.058 - 

747.058

747.736 - 

737.736

750.552 - 

740.552

628.70 - 

598.70

634.67 - 

609.67

620.20 - 

615.20

627.92 - 

622.92

655.

635

D/E-Zone 

Monitoring Wells

Groundwater Elevation (feet)

A-Zone D/E- and F-Zone

January-07 748.62 752.0 748.9 761.79 744.09 743.62 622.02 621.3 dry 642.87 632April-07 752.23 751.66 745.38 - - - 622.53 621.7 dry 642.93 632July-07 750.7 751.32 744.63 749.62 742.74 743.98 622.6 621.21 617.6 642.81 63

October-07 749.02 751.92 744.56 - - - 622.19 620.99 dry 640.39 631January-09 748 751.80 745.34 749.59 744.07 742.11 621.72 620.87 dry 642.83 631April-08 749.05 751.01 745.97 - - - 621.87 621.19 dry 643.23 632July-08 748.68 750.63 746.23 748.33 742.91 742.72 622.35 621.42 dry 642.11 631October-08 749.78 751.12 744.39 - - - 621.82 621.16 dry 642.54 630January-09 748.30 751.34 744.71 749.06 741.54 741.87 622.13 621.01 dry 642.27 632April-09 748.46 750.44 747.32 - - - 622.34 620.96 dry 642.11 632July-09 751.03 750.43 744.41 749.09 743.28 743.22 621.88 621.36 dry 641.04 632October-09 748.59 751.09 744.36 - - - 621.84 620.95 dry 641.23 631- Groundwater elevation not measured.

2/3/10 Page 2 of 2 
Table 5.3

Dry Run Landfill Monitoring Well Construction Data and Groundwater Elevation Data 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Zone

Parameters MW-6A MW-12A MW-12B MW-13A MW-21A MW-16B MW-17B Measuring Point Elevation (feet) 744.46 732.41 732.85 722.57 707.62 792.98 853.56 Total Depth (feet) 11.89 17.17 20.24 13.33 19.79 61.61 127.09 Well Diameter (inches) 2 4 44244 Slot Size (inches) 0.010 0.010 0.010 0.010 0.010 0.010 0.010 Screen Length (feet) 5 10 5 10 20 20 Elevation of Screen Interval(feet)

720.24 - 

715.24

722.61 - 

712.61

714.24 - 

709.24

697.83 - 

687.83

751.37 - 

731.57

746.47 - 

726.47

December-01 737.81 727.30 728.11 714.35 - - - January-02 738.29 728.50 729.14 716.97 - - - February-02 738.26 727.99 728.70 714.16 - - - March-02 738.75 728.89 729.58 716.68 - - - May-02 738.25 728.97 729.67 716.70 - - - August-02 735.61 725.51 726.24 713.62 - - - October-02 736.92 725.91 726.64 713.97 703.00 736.49 737.19 Feb/March-03 739.49 728.99 729.71 717.67 704.97 746.31 751.88 May-03 739.02 729.21 729.94 716.69 704.43 747.09 754.37 August-03 738.11 727.55 728.32 713.68 702.95 747.48 755.64 December-03 738.72 728.86 729.59 716.06 - - - February-04 738.85 728.46 729.15 717.11 704.35 749.52 756.42 May-04 739.26 728.89 729.58 716.61 704.80 749.96 757.01 August-04 737.71 726.67 727.49 713.62 - - - November-04 738.65 728.16 728.87 714.20 - - - January-05 739.13 725.4 729.67 716.34 697.03 749.58 757.20 May-05 739.74 729.37 730.11 717.14 705.01 750.23 757.35 July-05 737.72 726.54 727.26 713.66 702.66 748.94 756.42 October-05 734.57 725.93 726.75 713.62 702.80 747.58 755.79 January-06 738.71 728.23 729.00 714.55 703.43 748.11 756.41 April-06 739.10 728.74 729.49 715.06 704.80 748.95 756.24 July-06 738.70 727.65 728.31 714.01 703.12 748.50 756.24 October-06 739.86 728.76 729.51 714.57 703.68 747.96 756.40 January-07 739.35 729.20 729.81 716.95 704.93 749.03 756.49 April-07 739.06 728.56 729.28 714.66 704.02 749.62 756.38 July-07 737.76 726.05 726.85 712.87 702.31 748.68 756.20 October-07 736.98 724.65 725.42 713.03 702.67 747.37 755.75 January-09 739.99 728.45 729.2 716.36 704.9 747.93 756.05 April-08 739.61 728.91 729.45 715.23 705.02 749.50 756.61 July-08 738.55 728.09 728.72 713.97 703.28 749.33 756.23 October-09 737.11 725.24 726.03 713.17 702.64 748.30 756.25 January-09 739.91 728.56 729.35 716.82 704.82 747.98 755.96 April-09 739.71 729.23 729.88 717.12 704.97 748.88 756.34 July-09 738.06 727.16 728.34 713.00 702.93 748.65 756.05 October-09 737.68 724.31 728.30 713.74 703.09 747.66 756.36  - Groundwater elevation not measured.

Monitoring Wells

Overburden A-Zone

Groundwater Elevation (feet)

2/3/10 Page 1 of 2 
Table 5.3

Dry Run Landfill Monitoring Well Construction Data and Groundwater Elevation Data 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Zone C-Zone Above A- Zone

Parameters MW-19B MW-20B MW-12 MW-13 MW-15 MW-21B MW-14Measuring Point Elevation (feet) 881.99 868.79 733.1 722.68 734.28 707.67 938.08Total Depth (feet) 151.76 136.41 37.82 37.54 48.60 177.20 239.91Well Diameter (inches) 4 4 4 4 2 4 10Slot Size (inches) 0.010 0.010 0.010 0.010 0.010 0.010 NAScreen Length (feet) 20 20 15 15 20 20 NAElevation of Screen Interval(feet)

750.23 - 

730.23

752.38 - 

732.38

710.28 - 

695.28

700.14 - 

685.14

705.68 - 

685.68

550.47 - 

530.47 NA

December-01 - - 724.40 711.81 716.10 - 754.09January-02 - - 725.25 712.17 716.50 - 757.99February-02 - - 725.40 711.46 716.33 - 754.87March-02 - - 725.74 712.21 717.02 - 755.45May-02 - - 725.99 712.54 716.88 - 755.12August-02 - - 723.65 710.65 715.82 - 755.31October-02 750.94 752.95 723.54 711.65 716.02 613.01 755.13Feb/March-03 759.93 757.53 725.87 712.81 716.68 613.19 755.33May-03 757.64 757.75 725.66 712.53 716.64 614.06 755.40August-03 757.74 757.84 725.18 711.45 715.81 614.18 755.61December-03 - - 726.16 712.29 716.65 - 755.16February-04 757.87 757.84 725.93 712.09 716.48 614.68 755.29May-04 758.96 757.98 725.27 711.98 716.27 615.35 755.60August-04 - - 724.26 711.07 715.75 - 764.33November-04 - - 725.39 711.90 716.20 - 755.13January-05 757.93 757.94 729.65 712.09 716.67 - 755.46May-05 758.21 758.28 725.89 712.25 716.59 - 755.33July-05 757.85 757.99 724.04 710.87 715.69 - 753.57October-05 757.59 757.79 723.82 711.23 715.66 - 755.51January-06 757.27 757.67 725.63 711.86 716.19 - 755.56April-06 757.84 757.97 725.58 711.50 716.08 - 755.52July-06 758.00 758.08 724.78 711.50 715.84 - 755.68October-06 757.9 758.04 725.81 712.23 716.77 614.25 800.57January-07 758.03 758.24 726.15 712.31 716.64 - 755.55April-07 758.17 758.71 725.94 711.57 716.34 - 755.8July-07 755.27 758.08 723.75 710.50 715.19 - 756.02October-07 758.28 758.84 722.91 710.24 715.24 - 755.71January-08 758.21 758.47 725.39 712.23 716.45 - 755.66April-08 758.58 758.64 725.72 711.73 715.65 - 755.88July-08 758.78 758.84 725.42 711.74 716.09 - 755.76October-08 758.14 758.23 723.77 710.77 715.14 - 755.57January-09 757.74 757.59 725.55 712.48 716.43 - 755.93April-09 758.13 757.97 725.69 712.16 716.2 - 755.71July-09 758.21 758.35 724.87 711.06 715.37 - 755.76October-09 758.09 758.01 724.67 711.68 715.59 - 755.78 - Groundwater elevation not measured.

Monitoring Wells

A-Zone (con't) B-Zone

Groundwater Elevation (feet)

2/3/10 Page 2 of 2 
Table 5.4

DuPont Washington Works Site APFO in Surface Water 

Outlets 102 and 305

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date Avg Monthly APFO (ug/L)* Max Daily APFO (ug/L)

OUTLET 102 December 2009 <100 <100

November 2009 <100 <100

October 2009 <100 <100

September 2009 <100 <100

August 2009 <100 <100

July 2009 <100 <100

June 2009 50.0 500.0

May 2009 <100.0 <100.0

April 2009 <100.0 <100.0

March 2009 91.7 1100

February 2009 200 1600

January 2009 55 330

December 2008 8.3 100

November 2008 <100 <100

October 2008 <100 <100

September 2008 <100 <100

August 2008 <100 <100

July 2008 <100 <100

June 2008 25 100

May 2008 <100 <100

April 2008 <100 <100

March 2008 <100 <100

February 2008 <100 <100

January 2008 <100 <100

December 2007 <100 <100

November 2007 <100 <100

October 2007 <100 <100

September 2007 135.8 1000

August 2007 102 110

July 2007 <100 <100

June 2007 <100 <100

May 2007 <100 <100

April 2007 146 700

March 2007 <100 <100

February 2007 <100 <100

January 2007 <100 <100

December 2006 100.8 120

November 2006 <100 <100

October 2006 <100 <100

September 2006 108.3 200

August 2006 119.6 470

July 2006 <100 <100

June 2006 <100 <100

May 2006 <100 <100

April 2006 <100 <100

March 2006 <100 <100

February 2006 <100 <100

January 2006 <100 <100

December 2005 <100 <100

November 2005 <100 <100

October 2005 <100 <100

September 2005 <100 <100

August 2005 <100 <100

July 2005 <100 <100

Active Sampling Locations

2/3/10 Page 1 of 3 Table 5.4
Table 5.4

DuPont Washington Works Site APFO in Surface Water 

Outlets 102 and 305

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date Avg Monthly APFO (ug/L)* Max Daily APFO (ug/L)

Active Sampling Locations

OUTLET 102 cont. June 2005 <100 <100

May 2005 <100 <100

April 2005 <100 <100

March 2005 <100 <100

February 2005 0.2 0.2

January 2005 <100 <100

December 2004 <100.0 <100.0

November 2004 <100.0 <100.0

October 2004 <0.1 <0.1

September 2004 <100.0 <100.0

August 2004 <100.0 <100.0

July 2004 <100.0 <100.0

June 2004 <100.0 <100.0

May 2004 ND ND

April 2004 N/A N/A

March 2004 N/A N/A

February 2004 N/A N/A

January 2004 N/A N/A

December 2003 N/A N/A

November 2003 N/A N/A

October 2003 N/A N/A

September 2003 N/A N/A

OUTLET 305 December 2009 <100 <100

November 2009 32.5 130

October 2009 <100 <100

September 2009 <100 <100

August 2009 <100 <100

July 2009 <100 <100

June 2009 25.0 100.0

May 2009 550.0 5900.0

April 2009 177.9 1700.0

March 2009 166.7 1200

February 2009 12.5 100

January 2009 14.3 100

December 2008 <100 <100

November 2008 100 100

October 2008 <100 <100

September 2008 <100 <100

August 2008 12.5 100

July 2008 33.3 200

June 2008 44.4 400

May 2008 <100 <100

April 2008 400 400

March 2008 133.3 300

February 2008 <100 <100

January 2008 44 300

December 2007 33.3 300

November 2007 377.8 3400

October 2007 111.1 200

September 2007 <100 <100

August 2007 <100 <100

July 2007 <100 <100

June 2007 <100 <100

2/3/10 Page 2 of 3 Table 5.4
Table 5.4

DuPont Washington Works Site APFO in Surface Water 

Outlets 102 and 305

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date Avg Monthly APFO (ug/L)* Max Daily APFO (ug/L)

Active Sampling Locations

OUTLET 305 cont. May 2007 12.5 100

April 2007 <100 <100

March 2007 <100 <100

February 2007 <100 <100

January 2007 <100 <100

December 2006 100 100

November 2006 138.9 450

October 2006 <100 <100

September 2006 <100 <100

August 2006 <100 <100

July 2006 <100 <100

June 2006 <100 <100

May 2006 <100 <100

April 2006 <100 <100

March 2006 111.1 200

February 2006 <100 <100

January 2006 100 100

December 2005 30 140

November 2005 <100 <100

October 2005 <100 <100

September 2005 <100 <100

August 2005 15.6 140

July 2005 22.5 180

June 2005 <100.0 <100.0

May 2005 <100.0 <100.0

April 2005 <100.0 <100.0

March 2005 102.2 760

February 2005 <100.0 <100.0

January 2005 <100.0 <100.0

December 2004 <100.0 <100.0

November 2004 <100.0 <100.0

October 2004 <100.0 <100.0

September 2004 <100.0 100.0

August 2004 87.8 100.0

July 2004 92.2 140.0

June 2004 97.8 180.0

May 2004 50.0 100.0

April 2004 60.0 180.0

March 2004 16.0 60.0

February 2004 30.0 80.0

January 2004 <100.0 <100.0

December 2003 368 1800

November 2003 100 100

October 2003 <100.0 <100.0

September 2003 100 100

N/A = Outfall not operational

ND = Non Detect

* NPDES permit requires weekly sampling that is reported on the Discharge Monitoring Report as average 

monthly and maximum daily APFO in ug/L

2/3/10 Page 3 of 3 Table 5.4
Table 5.5 

DuPont Washington Works Site APFO and PFOA in Surface Water 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA**(ug/L)

OUTLET 001 12/3/2009 4.2 4

12/3/2009 (dup) 4.2 4

11/5/2009 2 1.9

10/15/2009 5.9 5.7

9/24/09 5.2 5

8/19/09 6.4 6.1

7/22/09 5 4.8

6/18/09 14 13

6/18/2009 (dup) 16 15

5/19/09 19 18

4/23/09 16 15

3/31/09 15 14

2/24/2009 31 30

1/30/2009 15 14

12/18/2008 9.7 9.3

11/25/2008 15 14

10/14/2008 18 17

9/23/2008 20 19

8/21/2008 3.2 3.1

7/24/2008 8.4 8.1

6/26/2008 8.1 7.8

5/8/2008 6.5 6.2

4/10/2008 8.7 8.4

3/6/2008 9.5 9.1

3/6/08 (dup) 10 9.6

2/7/2008 8 7.7

1/17/2008 27 26

12/27/2007 3 2.9

11/29/2007 18 17

11/29/07 (dup) 17 16

10/18/2007 5.6 5.4

9/20/2007 7.6 7.3

8/30/2007 5.4 5.2

7/19/2007 20 19

6/29/2007 4.5 4.3

6/29/07 (dup) 5.1 4.9

5/24/2007 26 25

4/26/2007 31 30

3/29/2007 40 38

2/28/2007 11 11

2/28/07 (dup) 14 13

1/18/2007 33 32

12/20/2006 43 41

12/20/06 (dup) 43 41

11/16/2006 16 15

10/19/2006 24 23

10/19/06 (dup) 24 23

9/21/2006 11 11

8/17/2006 5.2 5

7/20/2006 2.95 2.83

6/15/2006 24.2 23.3

5/31/2006 4.22 4.05

5/31/06 (dup) 4 3.84

Active Sampling Locations

2/3/10 Page 1 of 12 Table 5.5
Table 5.5 

DuPont Washington Works Site APFO and PFOA in Surface Water 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA**(ug/L)

Active Sampling Locations

OUTLET 001 (cont.) 1/19/2006 28.1 26.9

3/9/2006 24.3 23.3

2/2/2006 19.8 19

2/2/06 (dup) 18 17.3

1/19/2006 28.1 26.9

12/1/2005 14.2 13.6

11/3/2005 7.43 7.14

10/20/2005 9.82 9.43

9/22/2005 18.4 17.7

9/22/05 (dup) 16.4 15.8

8/31/2005 68.9 66.2

7/20/2005 25.2 24.2

6/24/2005 22.4 21.5

5/26/2005 82.4 79.2

4/25/2005 64.5 62

3/17/2005 82.2 79

2/9/2005 69.1 66.4

2/9/05 (dup) 70.1 67.3

1/25/2005 64.5 62

12/14/2004 5.22 5.01

11/9/2004 4.62

10/25/2004 9.33

9/15/2004 3.98

8/13/2004 18.6

7/13/2004 26.8

6/7/2004 53.4

5/17/2004 45.1

4/26/2004 10.9

4/26/04 (dup) 12

3/11/2004 55.7

2/18/2004 45.1

1/21/2004 39.1

12/7/2003 9.69

11/11/2003 12.2

10/16/2003 10.4

9/17/2003 23.8

8/15/2003 32.2

7/28/2003 11.7

6/13/2003 7.95

5/22/2003 14.9

4/30/2003 14.9

3/31/2003 51.4

2/27/2003 18.9

1/26/2003 3.58

12/9/2002 9.76

11/13/2002 17

10/18/2002 10.5

9/24/2002 2.15

8/27/2002 2.94

7/23/2002 8.63

6/25/2002 17.9

5/20/2002 22.4

4/16/2002 19.7

2/3/10 Page 2 of 12 Table 5.5
Table 5.5 

DuPont Washington Works Site APFO and PFOA in Surface Water 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA**(ug/L)

Active Sampling Locations

OUTLET 001 (cont.) 3/19/2002 21.4

2/5/2002 9.43

1/17/2002 10.9

12/20/2001 3.73

OUTLET 002 12/3/2009 22 21

11/5/2009 16 15

10/15/2009 29 28

9/24/2009 5.9 5.7

8/19/2009 4.6 4.4

8/19/2009 (dup) 4.9 4.7

7/22/2009 580 560

7/22/2009 (dup) 530 510

6/18/09 480 460

5/19/09 76 73

4/23/09 270 260

4/23/2009 (dup) 250 240

3/31/09 5.8 5.6

2/24/2009 66 63

2/24/09 (dup) 67 64

1/30/2009 100 100

12/18/2008 120 120

11/25/2008 15 14

10/14/2008 68 65

9/23/2008 19 18

9/23/08 (dup) 18 17

8/21/2008 11 11

7/24/2008 14 13

6/26/2008 7.8 7.5

5/8/2008 10 10

4/10/2008 6.8 6.5

4/10/08 (dup) 6.9 6.6

3/6/2008 16 15

2/7/2008 12 12

1/17/2008 14 13

12/27/2007 16 15

12/27/07 (dup) 16 15

11/29/2007 8.1 7.8

10/18/2007 34 33

10/18/07 (dup) 32 31

9/20/2007 21 20

9/20/07 (dup) 20 19

8/30/2007 3.5 3.4

7/19/2007 10 10

6/29/2007 14 13

5/24/2007 6 5.8

4/26/2007 7.4 7.1

3/29/2007 11 11

2/28/2007 11 11

1/18/2007 15 14

12/20/2006 15 14

11/16/2006 11 11

10/19/2006 9.1 8.7

9/21/2006 12 12

2/3/10 Page 3 of 12 Table 5.5
Table 5.5 

DuPont Washington Works Site APFO and PFOA in Surface Water 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA**(ug/L)

Active Sampling Locations

OUTLET 002 (cont.) 9/21/06 (dup) 13 13

8/17/2006 8.2 7.9

7/20/2006 10.8 10.4

6/15/2006 8.27 7.94

6/15/06 (dup) 7.86 7.55

5/31/2006 6.01 5.77

4/27/2006 13.1 12.6

3/9/2006 8.34 8.01

3/9/2006 (dup) 8.85 8.5

2/2/2006 14.4 13.9

1/19/2006 16 15.4

1/19/2006 (dup) 25.1 24.1

12/1/2005 17.1 16.4

11/3/2005 18.8 18.1

11/3/05 (dup) 20.7 19.9

10/20/2005 101 97.3

9/22/2005 11.5 11

8/31/2005 6.98 6.7

8/31/05 (dup) 7.17 6.89

7/20/2005 9.51 9.13

7/20/05 (dup) 9.12 8.76

6/24/2005 7.51 7.21

5/26/2005 15.3 14.7

5/26/05 (dup) 15.1 14.5

4/20/2005 35.4 34

3/16/2005 18 17.3

2/9/2005 14.5 13.9

1/24/2005 9.89 9.5

12/14/2004 5.76 5.53

11/9/2004 20.7

10/25/2004 61.5

9/14/2004 5.87

9/14/04 (dup) 5.83

8/13/2004 5.75

7/13/2004 4.71

6/8/2004 6.41

6/8/04 (dup) 6.29

5/17/2004 10.3

4/26/2004 10

3/11/2004 14.9

2/18/2004 21.1

2/18/04 (dup) 21

1/21/2004 5.1

1/21/04 (dup) 5.16

12/7/2003 2.9

11/11/2003 5.31

10/16/2003 4.94

9/17/2003 5.38

9/17/03 (dup) 5.65

8/15/2003 3.9

7/28/2003 5.37

7/28/03 (dup) 5.48

6/13/2003 5.11

2/3/10 Page 4 of 12 Table 5.5
Table 5.5 

DuPont Washington Works Site APFO and PFOA in Surface Water 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA**(ug/L)

Active Sampling Locations

OUTLET 002 (cont.) 5/22/2003 4.09

4/30/2003 4.09

3/31/2003 4.11

2/27/2003 4.15

1/26/2003 5.46

12/9/2002 2.37

11/13/2002 4.75

11/13/02 (dup) 5.28

10/18/2002 3.49

9/24/2002 2.14

8/27/2002 2.56

8/27/02 (dup) 2.51

7/23/2002 2.29

6/25/2002 3.86

6/25/02 (dup) 3.81

5/20/2002 4.13

4/16/2002 2.45

3/19/2002 5.85

2/5/2002 4.66

1/17/2002 4.23

1/17/02 (dup) 3.99

12/20/2001 1.98

11/26/2001 4.84

10/25/2001 2.8

9/19/2001 0.118

7/11/2001 0.558

6/14/2001 0.594

5/31/2001 0.436

4/11/2001 1.5

3/21/2001 8.54

2/14/2001 1.74

OUTLET 005 12/3/2009 4.4 4.2

11/5/2009 2.8 2.7

10/15/2009 5.8 5.6

10/15/2009 (dup) 4.8 4.6

9/24/2009 4 3.8

8/19/2009 11 10

7/22/2009 4.8 4.6

6/18/09 5.3 5.1

5/19/09 8.8 8.5

4/23/09 5.2 5

3/31/09 9.2 8.8

2/24/2009 4.2 4

1/30/2009 5.4 5.2

12/18/2008 3.5 3.4

11/25/2008 1.7 1.6

10/14/2008 5.9 5.7

10/14/08 (dup) 5.1 4.9

9/23/2008 15 14

8/21/2008 3.5 3.4

7/24/2008 9.1 8.7

6/26/2008 4.9 4.7

5/8/2008 6.2 6

2/3/10 Page 5 of 12 Table 5.5
Table 5.5 

DuPont Washington Works Site APFO and PFOA in Surface Water 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA**(ug/L)

Active Sampling Locations

OUTLET 005 (cont.) 4/10/2008 1.4 1.3

3/6/2008 22 21

2/7/2008 10 9.9

1/17/2008 22 21

12/27/2007 4.5 4.3

11/29/2007 16 15

10/18/2007 58 56

9/20/2007 24 23

8/30/2007 2.4 2.3

7/19/2007 51 49

6/29/2007 28 27

5/24/2007 32 31

4/26/2007 3.7 3.6

4/26/07 (dup) 3.6 3.5

3/29/2007 30 29

2/28/2007 64 61

1/18/2007 54 52

1/18/07 (dup) 53 51

12/20/2006 26 25

11/16/2006 23 22

10/19/2006 14 13

9/21/2006 4.7 4.5

8/17/2006 110 110

8/17/06 (dup) 120 120

7/20/2006 17.2 16.5

7/20/06 (dup) 17.7 17

6/15/2006 0.585 0.562

5/31/2006 2.48 2.38

4/27/2006 20.1 19.3

3/9/2006 134 129

2/2/2006 33.9 32.6

1/19/2006 15.4 14.8

12/1/2005 14.4 13.8

11/3/2005 34.1 32.8

10/20/2005 87.4 84

10/20/05 (dup) 86.3 82.9

9/22/2005 41.1 39.5

8/31/2005 23.8 22.9

7/20/2005 2.91 2.79

6/24/2005 12.9 12.4

6/24/05 (dup) 12.7 12.2

5/24/2005 34.3 32.9

4/20/2005 12.4 11.9

3/16/2005 131 126

3/16/05 (dup) 138 133

2/9/2005 24.2 23.2

1/24/2005 45.9 44.1

1/24/05 (dup) 45.7 43.9

12/14/2004 233 224

12/14/04 (dup) 261 251

11/9/2004 29.2

10/25/2004 56.8

10/25/04 (dup) 53.7

2/3/10 Page 6 of 12 Table 5.5
Table 5.5 

DuPont Washington Works Site APFO and PFOA in Surface Water 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA**(ug/L)

Active Sampling Locations

OUTLET 005 (cont.) 9/14/2004 113

8/13/2004 88.2

8/13/04 (dup) 87

7/13/2004 34.5

6/8/2004 68

5/17/2004 37.5

5/17/04 (dup) 37.3

4/26/2004 1.97

3/11/2004 19.2

2/18/2004 48.2

1/21/2004 173

12/7/2003 25.6

11/11/2003 28.4

11/11/03 (dup) 34.4

10/16/2003 36.6

10/16/03 (dup) 35.4

9/17/2003 21

8/15/2003 13.7

8/15/03 (dup) 13.5

7/28/2003 59.1

6/13/2003 247

6/13/03 (dup) 237

5/22/2003 15.9

4/30/2003 15.9

4/30/03 (dup) 16.7

3/31/2003 42.1

3/31/03 (dup) 43.1

2/27/2003 46.4

2/27/03 (dup) 46.2

1/26/2003 33.4

12/9/2002 6.39

12/9/02 (dup) 6.62

11/13/2002 18.1

10/18/2002 12.1

10/17/2002 18

10/16/2002 141

9/24/2002 4.64

9/24/02 (dup) 5.02

8/27/2002 12.4

7/23/2002 19.2

7/12/2002 12.5

7/11/2002 239

7/10/2002 37.8

7/1/2002 13.6

6/27/2002 79.3

6/26/2002 47.7

6/25/2002 17.9

2/3/10 Page 7 of 12 Table 5.5
Table 5.5 

DuPont Washington Works Site APFO and PFOA in Surface Water 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA**(ug/L)

Active Sampling Locations

OUTLET 005 (cont.) 6/24/2002 26.7

5/20/2002 98.6

5/17/2002 65.7

4/16/2002 3.8

3/19/2002 9.26

2/5/2002 141

1/17/2002 137

12/20/2001 31.4

12/20/01(dup) 35.3

11/26/2001 915

10/25/2001 62.6

9/19/2001 2.86

8/30/2001 2.16

7/11/2001 120

6/14/2001 7.4

5/31/2001 1.43

4/11/2001 4.31

3/21/2001 199

2/14/2001 153

OUTLET 105 12/3/2009 24 23

11/5/2009 16 15

11/5/2009 (dup) 16 15

10/15/2009 29 28

9/24/2009 37 36

9/24/09 (dup) 37 36

8/19/2009 42 40

7/22/2009 19 18

6/18/09 31 30

5/19/09 26 25

5/19/2009 (dup) 26 25

4/23/09 9.6 9.2

3/31/09 41 39

3/31/2009 (dup) 41 39

2/24/2009 18 17

1/30/2009 18 17

1/30/09 (dup) 17 16

12/18/2008 18 17

12/18/08 (dup) 20 19

11/25/2008 10 10

11/25/08 (dup) 11 11

10/14/2008 17 16

9/23/2008 23 22

8/21/2008 9.8 9.4

8/21/08 (dup) 9.9 9.5

7/24/2008 14 13

7/24/08 (dup) 15 14

6/26/2008 20 19

6/26/08 (dup) 19 18

5/8/2008 1.7 1.6

5/8/08 (dup) 2 1.9

4/10/2008 4.6 4.4

3/6/2008 14 13

2/7/2008 24 23

2/3/10 Page 8 of 12 Table 5.5
Table 5.5 

DuPont Washington Works Site APFO and PFOA in Surface Water 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA**(ug/L)

Active Sampling Locations

OUTLET 105 (cont.) 2/7/08 (dup) 24 23

1/17/2008 12 12

1/17/08 (dup) 12 12

12/27/2007 9.5 9.1

11/29/2007 24 23

10/18/2007 14 13

9/20/2007 6.7 6.4

8/30/2007 9.7 9.3

8/30/07 (dup) 10 10

7/19/2007 19 18

7/19/07 (dup) 18 17

6/29/2007 17 16

5/24/2007 14 13

5/24/07 (dup) 12 12

4/26/2007 20 19

3/29/2007 22 21

3/29/07 (dup) 23 22

2/28/2007 18 17

1/18/2007 32 31

12/20/2006 36 35

11/16/2006 30 29

11/16/06 (dup) 31 30

10/19/2006 39 37

9/21/2006 37 36

8/17/2006 46 45

7/20/2006 14.1 13.5

6/15/2006 4.71 4.52

5/31/2006 20.7 19.9

4/27/2006 44.5 42.8

4/27/06 (dup) 45.9 44.1

3/9/2006 34.8 33.4

2/2/2006 21.3 20.5

1/19/2006 22.3 21.4

12/1/2005 26.1 25.1

12/1/2005 (dup) 27.2 26.1

11/3/2005 58.6 56.3

10/20/2005 21.9 21

9/22/2005 31.1 29.9

8/31/2005 19.4 18.6

7/20/2005 12.7 12.2

6/24/2005 10.6 10.2

5/24/2005 35.5 34.1

4/25/2005 28.7 27.6

4/25/05 (dup) 27.7 26.6

3/16/2005 10.3 9.91

2/9/2005 17.4 16.7

1/24/2005 11.3 10.8

12/14/2004 15.0 14.4

11/9/2004 6.39

11/9/04 (dup) 6.67

10/25/2004 7.04

9/14/2004 5.74

8/13/2004 27

2/3/10 Page 9 of 12 Table 5.5
Table 5.5 

DuPont Washington Works Site APFO and PFOA in Surface Water 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA**(ug/L)

Active Sampling Locations

OUTLET 105 (cont.) 7/13/2004 10

7/13/04 (dup) 10.4

6/8/2004 15.1

5/17/2004 7.27

4/26/2004 3.63

3/11/2004 14

3/11/04 (dup) 13.5

2/18/2004 50.1

1/21/2004 33.9

12/7/2003 9.81

12/7/03 (dup) 10.3

11/11/2003 14.6

10/16/2003 8.88

9/17/2003 14.4

8/15/2003 3.82

7/28/2003 15.7

6/13/2003 29.3

5/22/2003 44.6

4/30/2003 44.9

3/31/2003 9.25

2/27/2003 17

1/26/2003 16.9

12/9/2002 6.07

11/13/2002 10.5

10/18/2002 54.6

9/24/2002 3.69

8/27/2002 6.73

7/23/2002 34.7

6/25/2002 3.86

5/20/2002 6.27

5/20/02 (dup) 5.16

4/16/2002 15.9

3/19/2002 13.2

2/5/2002 14.6

1/17/2002 7.53

12/20/2001 9.79

2/3/10 Page 10 of 12 Table 5.5
Table 5.5 

DuPont Washington Works Site APFO and PFOA in Surface Water 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA**(ug/L)

OUTLET 003 8/15/2003 0.352

7/28/2003 1.1

6/13/2003 0.529

5/22/2003 0.49

5/22/03 (dup) 0.496

4/30/2003 1.23

3/31/2003 0.43

2/27/2003 1.06

1/26/2003 0.75

1/26/03 (dup) 0.842

12/9/2002 0.68

11/13/2002 1.24

10/18/2002 0.87

9/24/2002 0.317

8/27/2002 0.268

7/23/2002 0.291

6/25/2002 0.175

5/20/2002 0.503

4/16/2002 2.76

3/19/2002 2.91

3/19/02 (dup) 2.81

2/5/2002 1.33

1/17/2002 0.956

1/17/02 (dup) 3.99

12/20/2001 0.713

Historic Sampling Locations

2/3/10 Page 11 of 12 Table 5.5
Table 5.5 

DuPont Washington Works Site APFO and PFOA in Surface Water 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA**(ug/L)

Historic Sampling Locations

OUTLET 007 8/15/2003 0.496

7/28/2003 0.973

6/13/2003 1.55

5/22/2003 0.206

4/30/2003 0.486

3/31/2003 0.897

2/27/2003 1.1

1/26/2003 5.77

12/9/2002 0.263

11/13/2002 8.56

10/18/2002 0.251

10/18/02 (dup) 0.209

9/24/2002 NQ (<0.05)

8/27/2002 0.207

7/23/2002 0.597

7/23/02 (dup) 0.544

6/25/2002 0.284

5/20/2002 0.49

4/16/2002 0.567

4/16/02 (dup) 0.57

3/19/2002 0.483

2/5/2002 0.32

2/5/02(dup) 0.339

1/17/2002 0.871

12/20/2001 1.99

RIVER BELOW 005 6/14/2001 0.034 J

RIVER BELOW PAGES RUN 6/14/2001 0.075 J

J = estimated value (below laboratory quantification limit)

and below the limit of 

* APFO is also known as C-8 or FC-143.

**Both APFO and PFOA are reported starting with analyses performed after December 1, 2004.

Note: Analytical method changed as of November 2001.

NQ = Not Quantifiable. Detected at a concentration above the LOD 

2/3/10 Page 12 of 12 Table 5.5
Table 5.6

DuPont Washington Works Site APFO and PFOA in Groundwater 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA**(ug/L)

Gallery Well (L04-PW01) 11/17/2009 69 66

8/31/2009 88 85

5/19/09 83 80

2/24/09 42 40

11/18/2008 32 31

7/16/2008 33 32

4/1/2008 45 43

1/8/2008 24 23

11/13/2007 17 16

7/24/2007 14 13

4/17/2007 9.3 8.9

1/16/2007 2.9 2.8

9/19/2006 2.2 2.1

6/6/2006 8.44 8.11

3/7/2006 17.1 16.4

2/2/2006 24.7 23.7

***12/19/2005 12 11.5

***9/29/2005 1.46 1.4

***6/24/2005 0.735 0.706

3/21/2005 0.771 0.74

12/8/2004 2.15 2.06

9/28/2004 0.636

8/5/2004 12

5/11/2004 15.2

2/20/2004 24.1

11/11/2003 14.7

8/11/2003 10.1

5/22/2003 24.8

3/10/2003 19.8

10/25/2002 14.3

8/13/2002 3.06

5/21/2002 15.1

4/18/2002 16.1

3/21/2002 29.9

2/7/2002 23.5

1/15/2002 30.9

10/25/2001 20.7

7/11/2001 0.202

4/11/2001 3.99

11/20/2000 13.8

2/7/1999 5.89

11/18/1998 7.9 J

11/18/98 (dup) 3.9 J

Active Sampling Locations

2/3/10 Page 1 of 11 Table 5.6
Table 5.6

DuPont Washington Works Site APFO and PFOA in Groundwater 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA**(ug/L)

Active Sampling Locations

Ranney Well (V05-PW01) 11/17/2009 62 60

8/31/2009 0.69 0.66

5/19/09 8.6 8.3

2/24/09 0.42 0.4

11/18/2008 77 74

7/16/2008 91 87

4/1/2008 71 68

1/8/2008 77 74

11/13/2007 75 72

7/24/2007 77 74

4/17/2007 100 100

1/16/2007 93 89

9/19/2006 69 66

6/6/2006 84.8 81.5

3/7/2006 111 107

12/19/2005 26.2 25.2

9/29/2005 123 118

6/24/2005 107 103

3/21/2005 120 115

12/7/2004 74.9 71.9

9/28/2004 100

8/5/2004 92.0

5/11/2004 60

2/20/2004 67.7

11/11/2003 57.3

8/11/2003 36.3

5/22/2003 51.1

3/10/2003 42.5

10/25/2002 51.2

8/13/2002 34.8

5/21/2002 35.8

4/18/2002 37.6

3/21/2002 40.9

2/7/2002 25.1

1/15/2002 29

10/25/2001 38.9

7/11/2001 11.4

4/11/2001 5.48

11/20/2000 13.7

2/7/1999 12.4

2/7/99 (dup) 3.95

11/18/1998 0.66 L

2/3/10 Page 2 of 11 Table 5.6
Table 5.6

DuPont Washington Works Site APFO and PFOA in Groundwater 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA**(ug/L)

Active Sampling Locations

West Field Well Header 1 11/17/2009 9.2 8.8

8/31/2009 9.8 9.4

5/19/09 8 7.7

2/24/09 7.4 7.1

11/18/2008 7.3 7

7/16/2008 9.7 9.3

4/1/2008 6.5 6.2

1/8/2008 8.1 7.8

11/13/2007 10 9.6

7/24/2007 6.9 6.6

4/17/2007 7.9 7.6

1/16/2007 8.4 8.1

9/19/2006 10 9.8

6/6/2006 7.28 6.99

3/7/2006 10.2 9.82

12/19/2005 13.3 12.8

9/29/2005 9.73 9.35

6/24/2005 8.88 8.53

3/21/2005 8.58 8.24

12/8/2004 16.8 16.1

9/28/2004 13.7

8/5/2004 13.5

5/11/2004 10.2

2/20/2004 10.9

11/11/2003 10.3

8/11/2003 7.14

5/23/2003 8.37

3/10/2003 7.12

10/25/2002 10.3

8/13/2002 6.41

5/21/2002 7.09

4/18/2002 6.69

3/21/2002 7.72

2/7/2002 5.77

1/15/2002 6.52

7/11/2001 2.31

4/11/2001 1.58

9/14/2000 0.819

6/3/1999 1.63

6/2/1998 16

5/29/1997 7.9

4/11/1996 3.7

2/16/1994 2

2/3/10 Page 3 of 11 Table 5.6
Table 5.6

DuPont Washington Works Site APFO and PFOA in Groundwater 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA**(ug/L)

AA04-MW01 2/6/1999 5.43

11/12/1998 <0.1 

11/12/98 (dup) 0.42

AA05-MW01 2/4/1999 1.46

11/11/1998 0.77

AB07-MW02 2/4/1999 0.535

11/16/1998 <0.2 I

AC07-MW02 2/4/1999 0.356

11/16/1998 0.79

ADPMW 1 12/6/1991 7800

ADPMW 2 12/6/1991 25

ADPMW 3 12/6/1991 20000

AE11-MW01 8/26/2003 3.85

5/21/2003 2.96

2/25/2003 1.37

10/16/2002 1.74

9/4/2002 1.92

5/23/2002 1.25

4/29/2002 1.22

3/26/2002 2.82

2/22/2002 1.45

1/28/2002 1.2

2/2/1999 0.69 L

11/10/1998 0.41

AJ06-MW02 8/25/2003 0.0821

5/22/2003 0.377

2/25/2003 0.099

10/16/2002 0.133

AM07-PW01 6/6/2006 0.538 0.517

3/7/2006 0.637 0.612

12/19/2005 0.559 0.537

9/29/2005 1 0.962

6/24/2005 0.967 0.929

3/21/2005 1.31 1.26

12/7/2004 2.61 2.51

9/26/2004 9.06

5/11/2004 1.27

2/17/2004 1.04

11/11/2003 0.511

8/11/2003 1.16

5/22/2003 0.377

3/8/2003 NQ (< 0.05)

10/22/2002 0.269

8/26/2002 0.335

5/17/2002 0.247

4/16/2002 0.159

Historic Sampling Locations

2/3/10 Page 4 of 11 Table 5.6
Table 5.6

DuPont Washington Works Site APFO and PFOA in Groundwater 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA**(ug/L)

Historic Sampling Locations

AM07-PW01 (cont.) 3/21/2002 0.171

2/14/2002 0.129

1/22/2002 0.131

11/20/2000 0.24

8/16/2000 0.071 J

5/12/1999 0.578

2/3/1999 0.082 B

11/18/1998 1.9 L

6/19/1998 0.4

6/2/1997 0.79

4/2/1996 0.48

12/20/1991 0.4

AO08-PW01 6/6/2006 0.969 0.931

3/7/2006 1.47 1.41

12/19/2005 0.86 0.826

9/29/2005 1.25 1.2

6/24/2005 1.09 1.05

3/21/2005 1.29 1.24

12/7/2004 2.12 2.04

9/26/2004 4.99

5/11/2004 1.01

2/17/2004 0.928

11/11/2003 0.384

8/11/2003 0.802

5/22/2003 0.736

3/8/2003 0.308

10/22/2002 0.415

8/26/2002 0.42

5/17/2002 0.499

4/16/2002 0.497

3/21/2002 0.568

2/14/2002 0.439

1/22/2002 0.355

11/20/2000 0.4

11/20/00 (dup) 0.26

8/15/2000 0.167

5/12/1999 0.307

6/19/1998 1

6/2/1997 0.55

4/2/1996 0.52

AQ09-PW01 10/11/2001 0.484

5/12/1999 1.45

AX13-PW01 6/7/2006 0.941 0.904

3/7/2006 0.955 0.917

12/19/2005 0.583 0.56

9/29/2005 0.806 0.774

2/3/10 Page 5 of 11 Table 5.6
Table 5.6

DuPont Washington Works Site APFO and PFOA in Groundwater 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA**(ug/L)

Historic Sampling Locations

AX13-PW01 (cont.) 6/24/2005 0.834 0.802

3/21/2005 1.63 1.57

12/7/2004 Not operating

9/28/2004 Not operating

5/11/2004 1.9

2/17/2004 2.53

11/11/2003 1.92

8/11/2003 1.51

5/22/2003 1.97

3/8/2003 1.07

10/22/2002 0.721

8/26/2002 0.834

5/17/2002 0.911

4/16/2002 1.42

3/21/2002 1.22

2/14/2002 1.03

BGMW2 12/13/1991 2.3

BGMW3 12/13/1991 4

12/13/91 (dup) 3.6

BGMW5 12/11/1991 5.5

BLDG 1 MAIN 10/11/2001 0.485

10/11/01 (dup) 0.467

8/15/2000 0.589

BLDG 231 10/11/2001 0.455

5/12/1999 0.306

5/12/99 (dup) 0.269

BLDG 293 10/11/2001 0.407

5/12/1999 0.496

BLDG 5 5/12/1999 0.213

D08-MW01 8/26/2003 0.0764

5/21/2003 0.846

5/21/03 (dup) 0.841

2/25/2003 3.72

10/16/2002 0.126

9/4/2002 0.117

5/23/2002 0.551

4/29/2002 0.424

3/26/2002 0.262

2/22/2002 1.27

1/28/2002 0.582

E13-MW01 8/26/2003 2.88

5/21/2003 3.67

2/25/2003 3.15

10/16/2002 3.43

9/4/2002 2.39

5/23/2002 2.47

2/3/10 Page 6 of 11 Table 5.6
Table 5.6

DuPont Washington Works Site APFO and PFOA in Groundwater 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA**(ug/L)

Historic Sampling Locations

E13-MW01 (cont.) 4/29/2002 2.44

3/26/2002 1.62

2/22/2002 2.32

1/28/2002 2.11

5/12/1999 0.882

2/2/1999 0.59 L

11/11/1998 2

F06-MW01 2/2/1999 0.35 L

11/11/1998 <0.1 

G17-MW01 5/12/1999 2.47

2/2/1999 2.11 L

11/11/1998 13

K16-PW01 6/6/2006 11.3 10.9

3/7/2006 15.6 15

***12/19/2005 see L04-PW01 see L04-PW01

***9/29/2005 see L04-PW01 see L04-PW01

***6/24/2005 see L04-PW01 see L04-PW01

3/21/2005 12.2 11.7

12/7/2004 16.2 15.6

9/28/2004 13.7

9/27/2004 25.8

5/11/2004 18.3

2/18/2004 9.41

11/11/2003 18.2

8/11/2003 11.9

5/22/2003 16

3/8/2003 8.93

10/22/2002 16.2

8/26/2002 9.71

5/17/2002 12.4

4/16/2002 13.2

3/21/2002 17.2

2/14/2002 12

1/22/2002 10.5

11/20/2000 7.5

2/9/1999 16.2

11/18/1998 0.46 L

L06-MW01 2/5/1999 4.91

11/13/1998 870

L17-PW01 9/14/2000 0.819

6/3/1999 1.63

2/9/1999 2.76

11/18/1998 0.33

6/2/1998 16

5/29/1997 7.9

4/11/1996 3.7

2/3/10 Page 7 of 11 Table 5.6
Table 5.6

DuPont Washington Works Site APFO and PFOA in Groundwater 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA**(ug/L)

Historic Sampling Locations

L17-PW01 (cont.) 2/16/1994 2

M04-MW02 2/7/1999 17

11/12/1998 0.2

M16-MW01 2/3/1999 3.66 L

11/10/1998 0.86

MW-AJP 4/18/1996 <0.4 

MW-MGM 4/18/1996 0.69

MW-TWW 4/18/1996 0.85

MWBG 4/2/1996 <0.1 

N04-MW02 1/28/2002 689

1/25/2001 698

1/25/01 (dup) 696

2/7/1999 329

11/12/1998 380

N04-MW03 8/25/2003 208

5/21/2003 268

2/26/2003 244

10/16/2002 21.2

N05-MW01 2/5/1999 815

11/13/1998 13

N13-MW01 8/26/2003 Insufficient Flow

5/22/2003 Insufficient Flow

2/25/2003 Insufficient Flow

10/16/2002 Insufficient Flow

9/4/2002 Insufficient Flow

5/23/2002 Insufficient Flow

4/29/2002 Insufficient Flow

3/28/2002 Insufficient Flow

2/25/2002 57.8

2/2/1999 29.6L

11/11/1998 <0.1

P04-MW02 8/26/2003 35100

5/21/2003 45600

2/26/2003 36900

10/16/2002 46600

10/16/02 (dup) 48300

9/4/2002 34400

5/23/2002 42400

4/29/2002 36500

3/26/2002 32300

2/25/2002 26800

1/28/2002 32600

1/25/2001 12600

2/6/1999 13600

11/12/1998 8300

P05-MW02 2/5/1999 434

2/3/10 Page 8 of 11 Table 5.6
Table 5.6

DuPont Washington Works Site APFO and PFOA in Groundwater 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA**(ug/L)

Historic Sampling Locations

P05-MW02 (cont.) 11/13/1998 1200

P06-MW02 2/5/1999 414

11/13/1998 31

P08-MW01 8/26/2003 Insufficient Flow

5/22/2003 Insufficient Flow

2/25/2003 Insufficient Flow

10/16/2002 120

9/4/2002 Insufficient Flow

5/23/2002 Insufficient Flow

4/29/2002 Insufficient Flow

3/28/2002 Pump problems-no sample

2/25/2002 20.7

2/4/1999 43.4

11/13/1998 36

Q04-MW02 8/26/2003 761

5/21/2003 831

2/26/2003 566

10/16/2002 7720

9/4/2002 32.2

5/23/2002 1480

4/29/2002 1210

3/26/2002 2070

2/25/2002 1590

1/28/2002 1480

2/4/1999 994

11/13/1998 660

R04-MW02 8/26/2003 66700

8/26/03 (dup) 70000

5/21/2003 67500

2/26/2003 322000

2/26/03 (dup) 289000

10/16/2002 84100

9/4/2002 66500

5/23/2002 68100

4/29/2002 56300

3/26/2002 54400

2/25/2002 43600

1/28/2002 47500

1/28/2002 47500

1/25/2001 13800

2/6/1999 9420

11/12/1998 1300

Q05-MW01 11/13/1998 38

RBLMW1 12/5/1991 140

12/5/91 (dup) 140

RBLMW2 12/11/1991 65

2/3/10 Page 9 of 11 Table 5.6
Table 5.6

DuPont Washington Works Site APFO and PFOA in Groundwater 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA**(ug/L)

Historic Sampling Locations

RBLMW2 (cont.) 12/11/91 (dup) 67

RBLMW3 12/11/1991 7100

RBLMW4 12/5/1991 550

RBLMW5 12/10/1991 1300

RBLMW6 11/21/1991 3300

RBLMW7 11/21/1991 46

11/21/91 (dup) 52

RBLMW8 12/10/1991 2.4

RBLMW9 12/10/1991 3.4

RBLMW10 11/20/1991 14

RBLMW11 11/20/1991 47

RBLMW12 12/10/1991 4.6

S05-MW02 2/5/1999 174

11/13/1998 690

T13-MW01 2/3/1999 0.64 L

2/3/99 (dup) 1.30 L

11/17/1998 <0.1 R

U04-MW01 2/6/1999 4.2

11/12/1998 1.6

U16-MW01 5/11/2000 4.7

5/20/1999 2

6/19/1998 11

V06-MW01 2/4/1999 1.91

11/16/1998 1.7

W05-MW01 2/6/1999 0.729

11/17/1998 0.31

Y14-MW01 8/26/2003 16.7

5/22/2003 21.6

2/25/2003 15.7

10/16/2002 18.2

9/4/2002 18.4

5/23/2002 15.3

4/29/2002 13.9

3/28/2002 15.5

2/22/2002 10.9

1/28/2002 12.7

2/2/1999 4.95 L

11/10/1998 12

Y14-MW02 8//25/03 NQ (< 0.05)

5/22/2003 0.0506

2/25/2003 NQ (< 0.05)

10/16/2002 NQ (< 0.05)

Z06-MW02 2/4/1999 0.803

11/16/1998 4.5

Z07-MW01 2/4/1999 2.05

2/3/10 Page 10 of 11 Table 5.6
Table 5.6

DuPont Washington Works Site APFO and PFOA in Groundwater 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA**(ug/L)

Historic Sampling Locations

Z07-MW01 (cont.) 11/16/1998 3.8

Z09-MW01 2/6/1999 2.74

11/17/1998 <0.1 R

J = estimated value (below laboratory quantification limit)

L = possible low bias result (relative to QA/QC)

B= compound detected in QC blank

R = unusable data result (relative to QA/QC)

Note: Analytical method changed as of November 2001.

*APFO is also known as C-8 or FC-143.

**Both APFO and PFOA are reported starting with analyses performed after December 1, 2004

***New personnel conducted sampling starting with 2Q05 event and subsequently determined that the 

incorrect sampling point was sampled from 2Q05 through 4Q05.

2/3/10 Page 11 of 11 Table 5.6
Table 5.7

Local Landfill APFO and PFOA in Surface Water 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** (ug/L)

OUTLET 004 12/92009 Insufficient Flow Insufficient Flow

(OUTFALL 004 New) 12/3/2009 Insufficient Flow Insufficient Flow

11/19/2009 Insufficient Flow Insufficient Flow

11/12/2009 Insufficient Flow Insufficient Flow

10/23/2009 Insufficient Flow Insufficient Flow

9/26/2009 Insufficient Flow Insufficient Flow

8/19/2009 Insufficient Flow Insufficient Flow

7/31/2009 1.6 1.5

6/4/09 0.54 0.52

5/4/09 2.5 2.4

3/11/2009 Insufficient Flow Insufficient Flow

2/10/2009 Insufficient Flow Insufficient Flow

1/7/2009 2.6 2.5

11/24/2008 0.38 0.36

9/4/2008 Insufficient Flow Insufficient Flow

8/27/2008 0.14 0.13

7/2/2008 Insufficient Flow Insufficient Flow

6/5/2008 8.3 8

5/9/2008 11 11

4/7/2008 10 10

3/5/2008 9 8.7

2/5/2008 7.9 7.6

1/8/2008 12 12

12/10/2007 7.2 6.9

11/16/2007 16 15

10/11/2007 Insufficient Flow Insufficient Flow

9/27/2007 Insufficient Flow Insufficient Flow

9/26/2007 Insufficient Flow Insufficient Flow

8/3/2007 Insufficient Flow Insufficient Flow

7/3/2007 15 14

6/6/2007 15 14

5/15/2007 17 16

4/3/2007 15 14

3/6/2007 11 11

2/21/2007 11 11

1/3/2007 12 12

12/7/2006 9.7 9.3

11/13/2006 10 9.6

10/5/2006 6 5.8

9/7/2006 9.6 9.2

8/31/2006 10 9.7

7/12/2006 9.57 9.19

6/8/2006 14 13.4

5/5/2006 15.2 14.6

4/14/2006 18.1 17.4

3/11/2006 14.4 13.8

2/14/2006 12.4 11.9

1/30/2006 9.58 9.2

12/14/2005 9.45 9.08

11/9/2005 9.89 9.5

10/24/2005 12.1 11.6

9/21/2005 Insufficient Flow Insufficient Flow

8/18/2005 15.1 14.5

Active Sampling Locations

2/3/10 Page 1 of 10 Table 5.7
Table 5.7

Local Landfill APFO and PFOA in Surface Water 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** (ug/L)

Active Sampling Locations

OUTLET 004 7/26/2005 11.2 10.8

(OUTFALL 004 New) (cont.) 6/16/2005 12.4 11.9

5/20/2005 15.8 15.2

4/27/2005 16.3 15.7

3/30/2005 16 15.4

2/7/2005 13.2 12.7

1/10/2005 12.7 12.2

12/10/2004 11.6 11.1

11/22/2004 18.8

10/15/2004 18.9

9/20/2004 16

8/23/2004 10.2

7/20/2004 13.8

6/23/2004 14.9

5/19/2004 13.5

4/5/2004 15.5

3/15/2004 15.8

2/10/2004 13.9

1/21/2004 12.7

12/5/2003 7.34

11/13/2003 21.8

10/21/2003 9.86

9/17/2003 12.3

8/13/2003 10.9

7/24/2003 9.75

6/13/2003 13.4

5/21/2003 19.3

4/30/2003 18.1

3/29/2003 15.9

2/28/2003 Insufficient Flow

1/31/2003 Insufficient Flow

12/13/2002 10.7

11/30/2002 Insufficient Flow

10/31/2002 Insufficient Flow

9/30/2002 Insufficient Flow

8/26/2002 Insufficient Flow

7/1/2002 11.2

6/13/2002 9.29

5/21/2002 Insufficient Flow

4/27/2002 14.5

3/26/2002 14.6

OUTLET 005 12/3/2009 4.9 4.7

 (OUTFALL 005 New) 11/19/2009 Insufficient Flow Insufficient Flow

11/12/2009 Insufficient Flow Insufficient Flow

10/23/2009 4.3 4.1

9/26/2009 6 5.8

8/19/2009 Insufficient Flow Insufficient Flow

7/31/2009 2.7 2.6

6/4/09 8 7.7

5/4/09 3.1 3

4/14/09 10 9.7

3/11/2009 16 15

2/3/10 Page 2 of 10 Table 5.7
Table 5.7

Local Landfill APFO and PFOA in Surface Water 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** (ug/L)

Active Sampling Locations

OUTLET 005 2/10/2009 8.6 8.3

(OUTFALL 005 New) (cont.) 1/6/2009 9.5 9.1

12/10/2008 3.4 3.3

11/15/2008 5.8 5.6

9/4/2008 Insufficient Flow Insufficient Flow

8/27/2008 6 5.8

7/2/2008 Insufficient Flow Insufficient Flow

6/5/2008 5.9 5.7

5/12/2008 6.3 6.1

4/28/2008 21 20

3/5/2008 8.2 7.9

2/5/2008 3 2.9

1/11/2008 4.3 4.1

12/10/2007 0.27 0.26

11/26/2007 1.8 1.7

10/11/2007 Insufficient Flow Insufficient Flow

9/27/2007 Insufficient Flow Insufficient Flow

9/26/2007 Insufficient Flow Insufficient Flow

9/14/2007 Insufficient Flow Insufficient Flow

8/3/2007 Insufficient Flow Insufficient Flow

7/3/2007 Insufficient Flow Insufficient Flow

6/19/2007 17 16

5/16/2007 Insufficient Flow Insufficient Flow

4/12/2007 11 11

3/9/2007 10 10

2/21/2007 7 6.7

1/5/2007 10 9.8

12/22/2006 9.8 9.5

11/16/2006 4 3.8

11/13/2006 Insufficient Flow Insufficient Flow

11/3/2006 Insufficient Flow Insufficient Flow

10/5/2006 5.8 5.6

9/13/2006 3.1 3

8/31/2006 Insufficient Flow Insufficient Flow

8/24/2006 Insufficient Flow Insufficient Flow

7/12/2006 Insufficient Flow Insufficient Flow

6/27/2006 Insufficient Flow Insufficient Flow

6/8/2006 Insufficient Flow Insufficient Flow

5/11/2006 6.93 6.65

4/14/2006 15.4 14.8

3/11/2006 17.6 16.9

2/16/2006 Insufficient Flow Insufficient Flow

2/14/2006 frozen frozen

1/30/2006 7.44 7.15

12/29/2005 6.7 6.44

12/14/2005 Insufficient Flow Insufficient Flow

11/9/2005 Insufficient Flow Insufficient Flow

10/24/2005 Insufficient Flow Insufficient Flow

9/21/2005 Insufficient Flow Insufficient Flow

8/18/2005 Insufficient Flow Insufficient Flow

7/26/2005 Insufficient Flow Insufficient Flow

6/16/2005 Insufficient Flow Insufficient Flow

2/3/10 Page 3 of 10 Table 5.7
Table 5.7

Local Landfill APFO and PFOA in Surface Water 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** (ug/L)

Active Sampling Locations

OUTLET 005 5/20/2005 11.1 10.7

(OUTFALL 005 New) (cont.) 4/27/2005 14.9 14.3

3/29/2005 12.7 12.2

2/7/2005 15.9 15.3

1/10/2005 12.3 11.8

12/10/2004 6.44 6.18

11/19/2004 5.56

10/15/2004 Insufficient Flow

9/20/2004 Insufficient Flow

7/20/2004 Insufficient Flow

6/23/2004 Insufficient Flow

5/19/2004 15.2

4/5/2004 20

3/15/2004 23.1

2/24/2004 22.5

1/22/2004 Insufficient Flow

12/5/2003 9.32

11/13/2003 42.1

10/21/2003 31.9

9/17/2003 Insufficient Flow

8/13/2003 Insufficient Flow

7/24/2003 7.93

6/13/2003 20.9

5/21/2003 21

4/30/2003 12.5

3/31/2002 Insufficient Flow

2/28/2003 Insufficient Flow

1/31/2003 Insufficient Flow

12/13/2002 9.51

11/30/2002 Insufficient Flow

10/31/2002 Insufficient Flow

9/30/2002 Insufficient Flow

8/26/2002 Insufficient Flow

7/1/2002 Insufficient Flow

6/13/2002 Insufficient Flow

5/21/2002 Insufficient Flow

4/27/2002 34.3

3/26/2002 16

SS1 (OUTFALL 005 (Old)/SS1) 12/3/2009 32 30

11/19/2009 Insufficient Flow Insufficient Flow

11/12/2009 Insufficient Flow Insufficient Flow

10/23/2009 Insufficient Flow Insufficient Flow

9/26/2009 29 28

8/19/2009 Insufficient Flow Insufficient Flow

7/31/2009 20 19

6/4/09 33 32

5/4/09 20 19

4/14/09 29 28

3/11/2009 36 35

2/10/2009 27 26

1/6/2009 40 38

12/10/2008 35 34

2/3/10 Page 4 of 10 Table 5.7
Table 5.7

Local Landfill APFO and PFOA in Surface Water 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** (ug/L)

Active Sampling Locations

SS1 (OUTFALL 005 (Old)/SS1) 9/4/2008 Insufficient Flow Insufficient Flow

(cont.) 8/27/2008 16 15

7/2/2008 Insufficient Flow Insufficient Flow

6/5/2008 22 21

5/9/2008 30 29

4/7/2008 25 24

3/5/2008 25 24

2/5/2008 26 25

1/8/2008 40 38

12/10/2007 22 21

11/26/2007 27 26

10/11/2007 Insufficient Flow Insufficient Flow

9/27/2007 Insufficient Flow Insufficient Flow

9/26/2007 Insufficient Flow Insufficient Flow

9/14/2007 Insufficient Flow Insufficient Flow

8/3/2007 Insufficient Flow Insufficient Flow

7/3/2007 Insufficient Flow Insufficient Flow

6/19/2007 19 18

6/6/2007 Insufficient Flow Insufficient Flow

5/15/2007 35 34

4/3/2007 32 31

3/6/2007 34 33

2/2/2007 30 29

1/3/2007 37 36

12/7/2006 29 28

11/13/2006 9.6 9.4

10/5/2006 26 25

9/13/2006 24 23

8/31/2006 Insufficient Flow Insufficient Flow

8/24/2006 Insufficient Flow Insufficient Flow

7/12/2006 Insufficient Flow Insufficient Flow

6/8/2006 41.9 40.2

5/5/2006 46.5 44.7

4/14/2006 47.7 45.8

3/11/2006 51 49

2/14/2006 38.7 37.2

1/30/2006 35.1 33.7

12/16/2005 28.9 27.8

11/9/2005 73.6 69.2

10/24/2005 Insufficient Flow Insufficient Flow

9/21/2005 Insufficient Flow Insufficient Flow

8/18/2005 Insufficient Flow Insufficient Flow

7/26/2005 Insufficient Flow Insufficient Flow

6/16/2005 36.1 34.6

5/20/2005 47.3 45.4

4/27/2005 34.7 33.3

3/20/2005 40.1 38.5

2/7/2005 32.4 31.1

1/10/2005 33.6 32.3

12/10/2004 28.6 27.5

11/22/2004 56.7

10/15/2004 55.7

2/3/10 Page 5 of 10 Table 5.7
Table 5.7

Local Landfill APFO and PFOA in Surface Water 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** (ug/L)

Active Sampling Locations

SS1 (OUTFALL 005 (Old)/SS1) 9/20/2004 49.2

(cont.) 7/20/2004 46.4

6/23/2004 45.4

5/19/2004 36.4

4/5/2004 61.4

3/15/2004 42.5

2/10/2004 35.8

1/21/2004 33.6

12/5/2003 21.8

11/13/2003 42.1

10/21/2003 31.9

9/17/2003 Insufficient Flow

8/13/2003 35

7/24/2003 29.5

6/13/2003 39.2

5/21/2003 47.9

4/30/2003 50.1

3/29/2003 44.9

2/28/2003 Insufficient Flow

1/31/2003 Insufficient Flow

12/13/2002 38.1

11/30/2002 Insufficient Flow

10/31/2002 Insufficient Flow

9/30/2002 Insufficient Flow

8/26/2002 Insufficient Flow

7/1/2002 32.1

6/13/2002 27.3

5/21/2002 Insufficient Flow

4/27/2002 40.9

3/26/2002 39

2/20/2002 46

1/11/2002 51.4

12/13/2001 Insufficient Flow

9/27/2000 13.3

12/10/1999 34

6/3/1999 6.8

6/2/1998 39

5/29/1997 41

4/2/1996 39

2/16/1994 35

OUTLET 101 (OUTFALL 101) 12/8/2009 70 67

11/12/2009 89 85

10/1/2009 100 96

9/8/2009 99 96

8/18/2009 93 89

7/16/2009 100 100

6/3/09 65 62

5/4/09 34 33

4/10/09 76 73

3/4/2009 73 70

2/10/2009 59 57

1/6/2009 100 100

2/3/10 Page 6 of 10 Table 5.7
Table 5.7

Local Landfill APFO and PFOA in Surface Water 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** (ug/L)

Active Sampling Locations

OUTLET 101 (OUTFALL 101) 12/2/2008 100 98

(cont.) 11/4/2008 92 88

10/3/2008 98 94

9/4/2008 93 89

8/6/2008 73 70

7/28/2008 71 68

6/5/2008 34 33

5/9/2008 72 69

4/7/2008 50 48

3/5/2008 28 27

2/5/2008 43 41

1/8/2008 57 55

12/10/2007 56 54

11/16/2007 98 94

10/11/2007 140 130

9/14/2007 130 120

8/3/2007 120 120

7/3/2007 93 89

6/6/2007 84 81

5/15/2007 80 77

4/3/2007 61 59

3/9/2007 61 59

2/2/2007 60 58

1/3/2007 67 64

12/7/2006 58 56

11/3/2006 50 48

10/6/2006 28 27

9/7/2006 94 90

8/18/2006 65 62

7/12/2006 72.3 69.4

6/8/2006 73.3 70.4

5/5/2006 77.5 74.4

4/14/2006 82.1 78.9

3/24/2006 78 74.9

2/14/2006 58.2 55.9

1/30/2006 56.6 54.4

12/14/2005 118 113

11/7/2005 161 155

10/24/2005 121 116

9/21/2005 154 148

8/18/2005 112 108

7/26/2005 92.6 88.9

6/16/2005 101 97.4

5/20/2005 101 97.2

4/27/2005 63.3 60.8

3/30/2005 50.4 48.4

2/7/2005 69 66.3

1/10/2005 41.2 39.6

12/10/2004 60.1 57.7

11/22/2004 119

10/18/2004 155

9/20/2004 54

2/3/10 Page 7 of 10 Table 5.7
Table 5.7

Local Landfill APFO and PFOA in Surface Water 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** (ug/L)

Active Sampling Locations

OUTLET 101 (OUTFALL 101) 8/23/2004 100

(cont.) 7/20/2004 113

6/23/2004 94.9

5/19/2004 103

4/5/2004 69.9

3/15/2004 76.8

2/10/2004 62.6

1/22/2004 64

12/5/2003 39

11/13/2003 63.1

10/21/2003 71.9

9/17/2003 96.7

8/13/2003 63.3

7/24/2003 60.4

6/13/2003 59.7

5/21/2003 48.4

4/30/2003 74.1

3/28/2003 45.4

2/26/2003 43.9

1/29/2003 72.3

12/16/2002 49.5

11/19/2002 76.7

10/31/2002 78.6

9/30/2002 115

8/26/2002 70.3

7/1/2002 63

6/13/2002 38

5/21/2002 40

4/27/2002 48.2

3/25/2002 36.4

2/20/2002 63.1

1/23/2002 81.4

12/13/2001 82.4

9/14/2000 12

6/3/1999 15

6/2/1998 54

2/3/10 Page 8 of 10 Table 5.7
Table 5.7

Local Landfill APFO and PFOA in Surface Water 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** (ug/L)

Active Sampling Locations

LM1 (Inlet 002) 8/18/2009 150 140

1/6/2009 120 120

8/14/2008 110 110

1/8/2008 115 110

8/3/2007 140 130

4/3/2007 98 94

9/7/2006 150 140

2/14/2006 115 110

10/24/2005 158 152

5/20/2005 133

11/22/2004 182

5/19/2004 105

12/5/2003 56.1

6/13/2003 87.9

5/21/2003 83.2

4/30/2003 98

12/16/2002 81.7

11/21/2002 120

2/3/10 Page 9 of 10 Table 5.7
Table 5.7

Local Landfill APFO and PFOA in Surface Water 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO (ug/L) PFOA**(ug/L)

OUTFALL 004 Old 6/13/2003 14.4

5/21/2003 20.2

4/30/2003 16.8

3/29/2003 14.7

2/28/2003 Insufficient Flow

1/31/2003 Insufficient Flow

12/13/2002 12.5

11/30/2002 Insufficient Flow

10/31/2002 Insufficient Flow

9/30/2002 Insufficient Flow

8/26/2002 Insufficient Flow

7/1/2002 11.6

6/13/2002 10

5/21/2002 Insufficient Flow

4/29/2002 15

3/26/2002 1.54

2/20/2002 10.9

1/24/2002 11.4

12/13/2001 Insufficient Flow

9/27/2000 4.73

12/10/1999 7.1

6/3/1999 3.06

6/2/1998 12

5/29/1997 13

4/2/1996 13

2/16/1994 11

LEACHATE 2/16/1994 31

OUTLET 001 5/29/1997 80

4/2/1996 61

OUTLET 002 5/29/1997 <0.2 

4/2/1996 72

OUTLET 003 5/29/1997 23

4/2/1996 20

STREAM 1 5/29/1997 11

4/2/1996 7.2

STREAM 2 9/14/2000 4.12

12/29/1999 10.7

6/2/1998 15

4/2/1996 14

Note: Analytical method changed as of November 2001.

*APFO is also known as C-8 or FC-143.

**Both APFO and PFOA are reported starting with analyses performed after December 1, 2004

Historic Sampling Locations

2/3/10 Page 10 of 10 Table 5.7
Table 5.8

Local Landfill APFO and PFOA in Groundwater 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** (ug/L)

MW4 (LLMW-4) 9/8/2009 97 93

9/8/2009 (dup) 96 92

1/19/2009 90 86

1/19/09 (dup) 87 84

9/23/2008 79 76

9/23/08 (dup) 76 73

4/24/2008 73 70

4/24/08 (dup) 71 68

7/20/2007 73 70

1/9/2007 76 73

7/26/2006 72.5 69.6

7/26/06 (dup) 68.8 66.1

1/12/2006 68.9 66.2

1/12/2006 (dup) 71.8 69

7/18/2005 67.5 64.8

7/18/2005 (dup) 65.5 62.9

1/28/2005 67.4 64.7

1/28/2005 (dup) 63.8 61.3

11/16/2004 103

8/9/2004 91.1

2/13/2004 55.5

7/21/2003 72.9

7/21/03 (dup) 71.6

5/13/2003 65.9

3/4/2003 52.4

10/15/2002 79.6

9/3/2002 63.5

5/20/2002 57.7

3/28/2002 47.2

2/25/2002 50.2

1/27/2002 58.4

12/13/2001 54.6

5/16/2001 1.4

5/11/2000 10

5/19/1999 16.2

5/27/1998 26

4/11/1996 39

MW6 (LLMW-6) 9/9/2009 14 13

1/19/2009 14 13

9/23/2008 12 12

4/24/2008 10 10

7/20/2007 13 13

1/9/2007 14 13

1/9/07 (dup) 15 14

7/26/2006 13.4 12.9

A-Zone

Active Sampling Locations

2/3/10 Page 1 of 5 Table 5.8
Table 5.8

Local Landfill APFO and PFOA in Groundwater 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** (ug/L)

Active Sampling Locations

MW6 (LLMW-6) (cont.) 1/12/2006 15.1 14.5

7/18/2005 14.5 13.9

1/28/2005 16.9 16.2

11/16/2004 26

8/9/2004 22.9

2/13/2004 16.4

2/13/04 (dup) 16.2

7/21/2003 17.2

5/13/2003 19.4

3/4/2003 16.1

10/15/2002 19.9

10/15/02 (dup) 17

9/3/2002 13.7

5/20/2002 18.6

3/28/2002 11.5

2/25/2002 10.1

1/27/2002 12.2

12/13/2001 11.9

5/16/2001 3

5/10/2000 1.42

5/19/1999 1.32

5/27/1998 9

4/11/1996 15

MW9 (LLMW-9) 9/9/2009 0.61 0.59

1/19/2009 0.78 0.75

9/23/2008 0.69 0.66

4/24/2008 0.7 0.67

7/20/2007 0.31 0.3

1/9/2007 0.2 0.19

7/26/2006 0.257 0.247

1/12/2006 0.182 0.175

7/18/2005 0.278 0.267

1/28/2005 0.232 0.223

11/16/2004 0.291

8/9/2004 0.349

2/13/2004 0.0673

7/21/2003 0.063

5/13/2003 0.0657

3/4/2003 NQ (<0.05)

10/15/2002 0.0569

9/3/2002 NQ (<0.05)

5/20/2002 NQ (<0.05)

3/28/2002 NQ (<0.05)

2/25/2002 NQ (<0.05)

1/27/2002 NQ (<0.05)

12/13/2001 ND (<0.01)

2/3/10 Page 2 of 5 Table 5.8
Table 5.8

Local Landfill APFO and PFOA in Groundwater 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** (ug/L)

Active Sampling Locations

MW9 (LLMW-9) (cont.) 5/16/2001 0.039 J

5/10/2000 <0.029

5/20/1999 0.046 J

5/27/1998 <0.1 

4/11/1996 0.14

MW10 (LLMW-10) 9/9/2009 0.09 0.086

1/19/2009 0.1 0.1

9/23/2008 0.11 0.11

4/24/2008 0.11 0.11

7/20/2007 0.12 0.12

1/9/2007 0.18 0.17

7/26/2006 0.141 0.136

1/12/2006 0.147 0.141

7/18/2005 0.172 0.165

1/28/2005 0.175 0.168

11/16/2004 0.301

11/16/04 (dup) 0.327 0.314

8/9/2004 0.273

2/13/2004 0.178

7/21/2003 0.253

5/13/2003 0.302

5/13/03 (dup) 0.304

3/4/2003 0.3

3/4/03 (dup) 0.318

10/15/2002 0.395

9/3/2002 0.357

5/20/2002 0.56

3/28/2002 0.698

2/25/2002 1.12

1/27/2002 0.162

12/13/2001 0.133

5/20/1999 0.15

5/28/1998 0.22

MW12B (LLMW-12B) 9/9/2009 0.17 0.16

1/19/2009 0.19 0.18

9/24/2008 0.14 0.13

7/31/2003 NQ (<0.05)

5/14/2003 0.0839

3/3/2003 NQ (<0.05)

10/8/2002 0.0658

MW11A (LLMW-11A) 9/8/2009 3.5 3.4

1/20/2009 2.9 2.8

9/24/2008 2.8 2.7

7/31/2003 1.67

C-Zone

B-Zone

2/3/10 Page 3 of 5 Table 5.8
Table 5.8

Local Landfill APFO and PFOA in Groundwater 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** (ug/L)

Active Sampling Locations

MW11A (LLMW-11A) 5/14/2003 2.09

(cont.) 3/4/2003 2.05

10/8/2002 2.22

MW13B (LLMW-13B) 9/9/2009 4.1 3.9

1/20/2009 3.7 3.6

9/24/2008 5.5 5.3

7/31/2003 5.11

5/14/2003 6.43

3/3/2003 6.38

10/8/2002 6.61

MW14B (LLMW-14B) 9/8/2009 0.71 0.68

1/20/2009 0.6 0.58

9/24/2008 0.58 0.56

7/31/2003 0.332

5/14/2003 0.646

3/3/2003 0.317

10/9/2002 0.488

2/3/10 Page 4 of 5 Table 5.8
Table 5.8

Local Landfill APFO and PFOA in Groundwater 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO (ug/L) PFOA** (ug/L)

MW11B (LLMW-11B) 7/31/2003 NQ (<0.05)

5/21/2003 NQ (<0.05)

3/4/2003 NQ (<0.05)

10/8/2002 NQ (<0.05)

J= estimated value (below laboratory quantitation limit)

ND= Not Detected at or above the limit of detection (LOD)

NQ= Not Quantifiable. Detected at a concentration above the LOD

 and below the limit of quantification (LOQ).

Note: Analytical method changed as of November 2001.

*APFO is also known as C-8 or FC-143.

** Both APFO and PFOA are reported starting with analyses performed after December 1, 2004.

Historic Sampling Locations

D-Zone

2/3/10 Page 5 of 5 Table 5.8
Table 5.9

Letart Landfill APFO and PFOA in Surface Water

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** (ug/L)

Outlet LCH1 8/5/2009 750 720

(LCH1 (Leachate) - PT) 1/23/2009 620 600

7/8/2008 400 380

1/23/2008 550 530

7/23/2007 1000 1000

3/26/2007 323 310

7/20/2006 1570 1510

2/6/2006 917 881

7/19/2005 254 244

4/27/2005 85.4 82

3/8/2005 403 387

Outlet 002& 10/15/2009 0.036 0.035

8/5/2009 0.061 0.059

4/13/09 0.046 0.044

1/23/2009 NQ (<0.013) NQ (<0.013)

10/6/2008 0.051 0.049

7/8/2008 0.014 0.013

4/4/2008 <0.0019 <0.0019

1/23/2008 NQ (<0.011) NQ (<0.011)

11/15/2007 NQ (<0.016) NQ (<0.016)

7/23/2007 0.033 0.032

6/7/2007 ND (<0.0027) ND (<0.0027)

3/26/2007 ND (<0.0010) ND (<0.0010)

10/27/2006 28 27

10/26/2006 no flow no flow

7/20/2006 0.228 0.219

4/28/2006 66.8 64.2

2/6/2006 0.0175 0.0168

11/1/2005 62.9 60.4

7/19/2005 940 903

4/27/2005 360 346

3/8/2005 0.131 0.126

Outlet 002 - PT& 8/12/2004 408

Outlet 002 - AT 8/12/2004 ND (<0.01)

Outlet 002 –Bed 2 3/8/2005 Insufficient Flow Insufficient Flow

12/10/2004 NQ (<0.05) NQ (<0.05)

12/2/2004 0.118 0.113

11/10/2004 NQ (<0.05)

10/29/2004 NQ (<0.05)

Outlet 002 –Bed 1 9/23/2004 37.9

8/12/2004 1.1

7/23/2004 14.8

6/21/2004 0.851

5/25/2004 1200

4/23/2004 184

Active Sampling Locations

2/3/10 Page 1 of 5 Table 5.9
Table 5.9

Letart Landfill APFO and PFOA in Surface Water

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** (ug/L)

Active Sampling Locations

Outlet 002& 3/26/2004 ND (<0.01)

[002(LEACHATE BASIN)] 2/23/2004 720

1/29/2004 395

12/9/2003 125

11/19/2003 30

9/16/2003 1950

8/13/2003 867

7/30/2003 Insufficient Flow

6/13/2003 Not Sampled‡

5/23/2003 Not Sampled‡

4/30/2003 Not Sampled‡

3/28/2003 Not Sampled‡

2/28/2003 Not Sampled***

1/24/2003 Insufficient Flow

12/30/2002 1170

11/25/2002 939

10/31/2002 645

9/27/2002 4.52

8/30/2002 2050

7/30/2002 1410

6/28/2002 Not Analyzed#

5/30/2002 1630

4/30/2002 443

3/28/2002 131

2/19/2002 355

1/25/2002 50.1

12/14/2001 36.1

11/27/2001 53.2

7/20/2001 159

7/25/2000 1350

4/3/2000 1900

1/14/2000 920

10/21/1999 3240

2/3/10 Page 2 of 5 Table 5.9
Table 5.9

Letart Landfill APFO and PFOA in Surface Water

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** (ug/L)

OUTLET 003 4/30/2003 Insufficient Flow

3/31/2003 Insufficient Flow

2/28/2003 Not Sampled***

1/31/2003 Insufficient Flow

12/30/2002 Insufficient Flow

11/30/2002 Insufficient Flow

10/31/2002 Insufficient Flow

9/27/2002 0.17

8/30/2002 Insufficient Flow

7/30/2002 Insufficient Flow

6/28/2002 Not Analyzed#

5/30/2002 0.282

4/29/2002 0.0653

3/28/2002 0.198

2/19/2002 Insufficient Flow

1/25/2002 0.148

12/14/2001 0.39

Outlet 004 10/26/2006 470 450

7/20/2006 758 728

4/28/2006 753 723

2/6/2006 17.1 16.4

11/1/2005 2820 2710

7/19/2005 609 585

4/27/2005 191 183

1/27/2005 139 134

BRINKER’S RUN 5/21/2003 0.442

3/13/2003 0.247

10/14/2002 0.0612

CAP RUNOFF 4/30/2003 Not Sampled‡

3/28/2003 Not Sampled‡

2/28/2003 Not Sampled***

1/24/2003 Insufficient Flow

12/30/2002 415

11/25/2002 65.1

10/31/2002 102

9/27/2002 50.9

8/30/2002 Insufficient Flow

6/28/2002 Not Analyzed#

5/30/2002 371

4/29/2002 279

3/28/2002 Not Sampled

2/19/2002 Insufficient Flow

1/25/2002 119

Historic Sampling Locations

2/3/10 Page 3 of 5 Table 5.9
Table 5.9

Letart Landfill APFO and PFOA in Surface Water

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** (ug/L)

Historic Sampling Locations

LEACHATE 11/27/2001 53.2

7/20/2001 159

7/25/2000 2250

7/20/1999 1030

LOWER POND 1/14/2000 1410

4/3/2000 1260

10/21/1999 2530

7/19/1999 1190

5/28/1998 1100

7/23/1997 1600

4/17/1996 1900

9/20/1994 2200

3/15/1994 730

12/27/1991 1300

11/22/1991 1000

4/26/1991 670

3/22/1991 340

2/8/1991 400

1/18/1991 1200

N SPRING FLOW 3/12/1992 0.3

3/12/1992 0.3

RT 33 STREAM 3/28/2003 2.27

10/31/2002 2.83

9/27/2002 2.24

8/30/2002 Insufficient Flow

5/30/2002 1.57

4/29/2002 0.845

3/28/2002 1.26

2/19/2002 3.92

1/25/2002 1.9

7/20/2001 2.01

7/31/2000 0.573

7/20/1999 2.23

7/23/1997 2

4/17/1996 1.8

2/3/10 Page 4 of 5 Table 5.9
Table 5.9

Letart Landfill APFO and PFOA in Surface Water

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** (ug/L)

Historic Sampling Locations

STREAM MN RD 3/15/1994 0.5

9/20/1994 0.9

SW SPRING FLOW 3/12/1992 1

UPPER POND 7/19/1999 517

5/28/1998 480

7/23/1997 <200 

4/17/1996 2100

3/15/1994 4400

12/27/1991 4100

11/22/1991 790

4/26/1991 930

3/22/1991 500

2/8/1991 2300

1/18/1991 2900

Note: Analytical method changed as of November 2001.

*APFO is also known as C-8 or FC-143.

** These surface water locations were not sampled due to downed trees from an

 ice storm that prohibited access to the landfill.

***Both APFO and PFOA are reported starting with 

 analyses performed after December 1, 2004

# Samples were taken at the respective surface water locations. 

 However, due to an error by the courier, the samples arrived at the lab 

 warm and were not analyzed.

‡ These sampling points could not be accessed due to a rock slide

 that had covered the sampling locations.

& All of these samples were collected from the same location. However, the outlet was reconfigured

with the addition of the pilot GAC Treatment system and again with construction of the permanent GAC

Treatment system.

2/3/10 Page 5 of 5 Table 5.9
Table 5.10

Letart Landfill APFO and PFOA in Groundwater

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA ** (ug/L)

MWL1 (LMW-1) 10/8/2009 2300 2200

7/10/2009 2500 2400

4/7/09 5500 5300

1/22/2009 3000 2900

10/8/2008 4100 3900

7/9/2008 3300 3200

4/4/2008 3100 3000

1/22/2008 3600 3500

10/10/2007 4000 3800

7/25/2007 3100 3000

4/12/2007 4800 4600

1/16/2007 6800 6500

10/25/2006 4900 4700

7/19/2006 51000 49000

4/26/2006 21000 20200

2/2/2006 9770 9380

11/1/2005 9740 9360

7/20/2005 2540 2440

4/28/2005 4130 3970

1/26/2005 17500 16800

11/9/2004 13000

8/11/2004 6330

5/19/2004 5880

2/11/2004 12700

12/5/2003 13100

7/23/2003 57200

5/21/2003 27300

3/12/2003 25000

10/14/2002 25900

8/29/2002 23000

5/24/2002 30500

3/29/2002 20600

2/24/2002 18400

1/26/2002 29400

12/10/2001 24600

11/27/2001 16900

7/19/2001 6100

1/31/2001 9190

10/4/2000 10600

7/24/2000 8990

4/3/2000 13600

1/13/2000 17400

10/21/1999 12600

7/20/1999 6920

5/28/1998 24000

7/23/1997 5100

4/17/1996 1700

11/22/1991 68

3/22/1991 60

Active Sampling Locations

A-Zone Wells

2/3/10 Page 1 of 15 Table 5.10
Table 5.10

Letart Landfill APFO and PFOA in Groundwater

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA ** (ug/L)

Active Sampling Locations

MWL7 (LMW-7) 10/8/2009 260 250

7/10/2009 230 220

4/7/09 290 280

1/22/2009 300 290

10/6/2008 230 220

7/9/2008 220 210

4/4/2008 280 270

1/22/2008 270 260

10/10/2007 350 330

7/24/2007 310 300

4/12/2007 280 270

1/16/2007 380 360

10/25/2006 330 320

7/19/2006 337 324

4/26/2006 407 391

2/2/2006 478 459

11/1/2005 548 526

7/20/2005 309 297

4/25/2005 1030 987

1/26/2005 432 415

11/10/2004 267

8/11/2004 415

5/18/2004 304

2/11/2004 356

12/5/2003 151

7/23/2003 273

5/21/2003 385

3/12/2003 218

10/14/2002 300

8/27/2002 197

5/24/2002 567

3/29/2002 324

2/24/2002 180

1/26/2002 496

12/10/2001 334

11/27/2001 365

7/20/2001 242

1/31/2001 249

10/4/2000 231

7/25/2000 158

4/3/2000 211

1/13/2000 219

10/20/1999 339

7/20/1999 78.3

5/28/1998 260

7/23/1997 53

4/17/1996 15

11/22/1991 0.1

2/3/10 Page 2 of 15 Table 5.10
Table 5.10

Letart Landfill APFO and PFOA in Groundwater

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA ** (ug/L)

Active Sampling Locations

MWL8 (LMW-8) 10/8/2009 1500 1400

7/10/2009 1400 1300

4/7/09 1500 1400

1/22/2009 1400 1300

10/8/2008 790 760

7/9/2008 1100 1100

4/3/2008 2000 1900

1/22/2008 1700 1600

10/10/2007 1400 1300

7/25/2007 1500 1400

4/12/2007 2200 2100

1/16/2007 1700 1600

10/25/2006 2100 2000

7/19/2006 2240 2150

4/26/2006 2400 2310

2/2/2006 2090 2010

11/1/2005 3330 3200

7/20/2005 2320 2230

4/28/2005 5840 5610

1/26/2005 2700 2590

11/9/2004 3730

8/11/2004 2080

5/20/2004 2650

2/11/2004 2140

12/5/2003 1940

7/23/2003 2780

5/20/2003 3100

3/12/2003 1720

10/14/2002 3480

8/29/2002 3100

5/24/2002 4020

3/29/2002 3520

2/23/2002 2230

1/26/2002 3930

12/10/2001 3240

11/27/2001 2610

7/19/2001 1120

1/30/2001 2650

10/4/2000 2300

7/24/2000 2160

4/3/2000 2180

1/13/2000 2100

10/20/1999 3260

7/20/1999 1790

5/28/1998 2700

7/23/1997 2000

4/17/1996 2200

11/22/1991 280

2/3/10 Page 3 of 15 Table 5.10
Table 5.10

Letart Landfill APFO and PFOA in Groundwater

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA ** (ug/L)

Active Sampling Locations

MWL3A (LMW-3A) 10/8/2009 Insufficient Flow Insufficient Flow

7/7/2009 Insufficient Flow Insufficient Flow

4/8/2009 Insufficient Flow Insufficient Flow

1/23/2009 Insufficient Flow Insufficient Flow

10/8/2008 Insufficient Flow Insufficient Flow

7/8/2008 Insufficient Flow Insufficient Flow

4/3/2008 Insufficient Flow Insufficient Flow

1/23/2008 Insufficient Flow Insufficient Flow

10/10/2008 Insufficient Flow Insufficient Flow

7/24/2007 Insufficient Flow Insufficient Flow

4/13/2007 Insufficient Flow Insufficient Flow

1/17/2007 Insufficient Flow Insufficient Flow

10/24/2006 Insufficient Flow Insufficient Flow

7/18/2006 dry dry

4/27/2006 dry dry

2/2/2006 Insufficient Flow Insufficient Flow

10/31/2005 Insufficient Flow Insufficient Flow

7/20/2005 Insufficient Flow Insufficient Flow

4/27/2005 238 229

1/26/2005 159 153

11/9/2004 221

8/12/2004 175

5/19/2004 113

2/10/2004 71.3

12/4/2003 76.4

7/22/2003 146

5/19/2003 200

3/11/2003 144

10/11/2002 204

8/26/2002 Insufficient Flow

5/24/2002 134

3/29/2002 132

2/23/2002 101

1/26/2002 98.6

12/11/2001 101

7/19/1999 60.3

11/22/1991 350

3/22/1991 380

MWL4 (LMW-4) 10/9/2009 720 690

7/8/2009 860 830

4/8/09 650 620

1/23/2009 690 660

10/6/2008 500 480

7/8/2008 530 510

4/3/2008 750 720

1/23/2008 790 760

10/10/2007 750 720

7/24/2007 770 740

4/13/2007 840 810

D/E - Zone Wells

2/3/10 Page 4 of 15 Table 5.10
Table 5.10

Letart Landfill APFO and PFOA in Groundwater

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA ** (ug/L)

Active Sampling Locations

MWL4 (LMW-4) (cont.) 1/17/2007 1500 1400

10/25/2006 1200 1200

7/19/2006 1340 1290

4/26/2006 1780 1710

2/2/2006 1730 1660

10/31/2005 2670 2560

7/19/2005 993 954

4/25/2005 1880 1810

1/26/2005 1080 1040

11/10/2004 1940

8/11/2004 1710

5/18/2004 1230

2/10/2004 927

12/4/2003 906

7/22/2003 992

5/19/2003 1280

3/11/2003 1520

10/11/2002 2840

8/27/2002 1410

5/21/2002 1690

3/27/2002 2620

2/23/2002 2250

1/26/2002 3060

12/13/2001 1580

11/27/2001 1720

4/3/2000 272

4/3/00 (dup) 220

1/14/2000 172

11/22/1991 830

3/28/1991 690

MWL13A (LMW-13A) 10/7/2009 22 21

7/8/2009 26 25

4/6/09 29 28

1/22/2009 40 38

10/8/2008 40 38

7/14/2008 26 25

4/2/2008 28 27

1/21/2008 46 44

10/8/2007 50 48

7/23/2007 57 55

4/13/2007 62 60

1/15/2007 71 68

10/24/2006 76 73

7/18/2006 89.3 85.8

4/27/2006 96.7 92.9

2/2/2006 134 129

10/31/2005 160 154

7/19/2005 102 97.5

4/28/2005 170 163

1/27/2005 125 120

2/3/10 Page 5 of 15 Table 5.10
Table 5.10

Letart Landfill APFO and PFOA in Groundwater

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA ** (ug/L)

Active Sampling Locations

MWL13A (LMW-13A) (cont.) 11/12/2004 234

7/24/2003 177

5/19/2003 185

3/11/2003 144

10/10/2002 510

MWL14A (LMW-14A) 10/7/2009 1400 1300

7/8/2009 1000 1000

4/7/09 1500 1400

1/21/2009 1100 1100

10/7/2008 970 930

7/14/2008 1000 980

4/2/2008 850 820

1/21/2008 910 870

10/8/2007 1000 1000

7/23/2007 1000 970

4/13/2007 910 870

1/15/2007 840 810

10/24/2006 900 860

7/18/2006 1010 970

4/27/2006 1000 963

2/2/2006 829 796

10/31/2005 1320 1270

7/19/2005 794 763

4/28/2005 969 931

1/27/2005 829 796

11/12/2004 1280

7/24/2003 766

5/19/2003 998

3/11/2003 498

10/10/2002 974

2/3/10 Page 6 of 15 Table 5.10
Table 5.10

Letart Landfill APFO and PFOA in Groundwater

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA ** (ug/L)

Active Sampling Locations

MWL2A (LMW-2A) 10/8/2009 1400 1300

7/10/2009 1000 1000

4/7/09 1200 1200

1/21/2009 980 940

10/6/2008 980 940

7/14/2008 920 880

4/3/2008 820 790

1/22/2008 960 920

10/10/2007 1500 1400

7/24/2007 1000 1000

4/12/2007 990 950

1/16/2007 950 910

10/25/2006 920 880

7/19/2006 1480 1420

4/26/2006 1120 1080

2/2/2006 837 804

11/1/2005 1500 1440

7/20/2005 864 830

4/25/2005 1250 1200

1/26/2005 844 811

11/10/2004 1260

8/11/2004 1240

5/18/2004 867

2/11/2004 749

12/8/2003 416

7/22/2003 1020

5/20/2003 998

3/12/2003 676

10/14/2002 931

8/27/2002 676

5/24/2002 922

3/29/2002 717

2/24/2002 714

1/26/2002 740

12/11/2001 830

11/27/2001 444

7/19/2001 242

1/30/2001 423

10/5/2000 248

7/25/2000 275

4/3/2000 660

1/14/2000 453

10/21/1999 370

7/20/1999 350

5/28/1998 990

7/23/1997 460

4/17/1996 460

9/20/1994 270

D/E and F-Zone Wells

2/3/10 Page 7 of 15 Table 5.10
Table 5.10

Letart Landfill APFO and PFOA in Groundwater

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA ** (ug/L)

Active Sampling Locations

MWL2A (LMW-2A) (cont.) 3/15/1994 260

11/22/1991 63

3/22/1991 50

MWL11 (LMW-11) 10/7/2009 0.19 0.18

7/8/2009 0.22 0.21

4/8/09 0.18 0.17

1/23/2009 0.15 0.14

10/8/2008 0.14 0.13

7/8/2008 0.15 0.14

4/3/2008 0.15 0.14

1/23/2008 0.16 0.15

10/8/2007 0.17 0.16

7/24/2007 0.15 0.14

4/12/2007 0.14 0.13

1/15/2007 0.12 0.12

10/24/2006 0.15 0.14

7/18/2006 1.85 1.78

4/26/2006 0.202 0.194

2/2/2006 0.131 0.126

10/31/2005 0.255 0.245

7/19/2005 0.128 0.123

4/25/2005 0.324 0.311

1/26/2005 0.135 0.13

11/10/2004 0.22

8/11/2004 0.226

5/18/2004 0.126

2/10/2004 0.11

12/4/2003 0.111

7/22/2003 0.128

5/20/2003 0.124

3/12/2003 0.12

10/14/2002 0.121

8/27/2002 0.058

5/21/2002 0.069

3/29/2002 0.119

2/24/2002 0.112

1/26/2002 0.159

12/11/2001 0.128

11/27/2001 0.0989

2/3/10 Page 8 of 15 Table 5.10
Table 5.10

Letart Landfill APFO and PFOA in Groundwater

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA ** (ug/L)

Active Sampling Locations

MWL5B (LMW-5B) 10/9/2009 1700 1600

10/9/2009 (dup) 1900 1800

7/8/2009 1900 1800

7/8/09 (dup) 2000 1900

4/8/09 2700 2600

4/8/2009 (dup) 2300 2200

1/23/2009 1100 1100

1/23/09 (dup) 1200 1200

10/8/2008 1400 1300

10/8/08 (dup) 1400 1300

7/8/2008 1400 1300

7/8/08 (dup) 1200 1200

4/3/2008 1200 1200

4/3/08 (dup) 1200 1200

1/23/2008 1400 1300

1/23/08 (dup) 1700 1600

10/10/2007 1500 1400

10/10/07 (dup) 1600 1500

7/24/2007 1600 1500

7/24/07 (dup) 1600 1500

4/13/2007 1500 1400

4/13/07 (dup) 1500 1400

1/17/2007 2300 2200

1/17/07 (dup) 2900 2800

10/24/2006 1600 1500

10/24/06 (dup) 1500 1400

7/19/2006 1440 1380

7/19/06 (dup) 1550 1490

4/26/2006 2110 2030

4/26/06 (dup) 1940 1860

2/2/2006 1430 1370

2/2/2006 (dup) 1450 1390

10/31/2005 2550 2450

10/31/05 (dup) 2690 2580

7/19/2005 1740 1670

7/19/05 (dup) 1550 1490

4/25/2005 1960 1880

4/25/05 (dup) 2450 2350

1/26/2005 1510 1450

1/26/05 (dup) 1490 1430

11/10/2004 2280

11/10/04(dup) 2710

8/11/2004 2480

8/11/04 (dup) 2510

5/18/2004 1790

5/18/04 (dup) 1760

2/10/2004 1260

2/10/04 (dup) 1280

F-Zone Wells

2/3/10 Page 9 of 15 Table 5.10
Table 5.10

Letart Landfill APFO and PFOA in Groundwater

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA ** (ug/L)

Active Sampling Locations

MWL5B (LMW-5B) (cont.) 12/4/2003 901

12/4/03 (dup) 915

7/22/2003 1800

7/22/03 (dup) 1940

5/19/2003 2010

5/19/03 (dup) 1660

3/11/2003 1470

3/11/03 (dup) 1520

10/11/2002 2230

10/11/02 (dup) 2280

8/27/2002 1480

8/27/02 (dup) 1340

5/21/2002 1720

5/21/02 (dup) 1630

3/27/2002 1810

3/27/02 (dup) 1850

2/23/2002 1460

2/23/02(dup) 1490

1/26/2002 1780

1/26/02 (dup) 1890

12/11/2001 1880

11/27/2001 1600

11/27/01 (dup) 1680

7/20/2001 483

7/20/01(dup) 592

1/31/2001 615

10/5/2000 1190. J

10/5/00 (dup) 780

7/25/2000 900. J

4/3/2000 1100

4/3/00 (dup) 1020

1/14/2000 1030

10/21/1999 1750

10/21/99 (dup) 1700

7/20/1999 445

7/23/1997 480

9/20/1994 530

3/15/1994 1200

11/22/1991 380

3/22/1991 340

MWL6 (LMW-6) 10/7/2009 5.2 5

7/7/2009 8.7 8.4

4/6/09 8 7.7

1/21/2009 6.9 6.6

10/7/2008 7.9 7.6

7/14/2008 6.2 6

4/2/2008 2.1 J 2 J

1/21/2008 8.6 8.3

10/8/2007 6.6 6.3

7/23/2007 6.2 6

2/3/10 Page 10 of 15 Table 5.10
Table 5.10

Letart Landfill APFO and PFOA in Groundwater

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA ** (ug/L)

Active Sampling Locations

MWL6 (LMW-6) (cont.) 4/12/2007 5.2 5

1/15/2007 9.7 9.3

10/24/2006 9.7 9.3

7/18/2006 8.88 8.53

4/26/2006 9.66 9.28

2/2/2006 9.79 9.4

10/31/2005 10.4 9.98

7/20/2005 7.32 7.03

4/28/2005 10.6 10.1

1/27/2005 6.44 6.19

11/9/2004 14

8/11/2004 12

5/19/2004 10.1

2/11/2004 9.11

12/8/2003 5.85

7/23/2003 9.73

5/21/2003 9.53

3/13/2003 11.6

10/14/2002 15.1

8/27/2002 10.5

5/24/2002 20.7

3/29/2002 14.8

2/24/2002 14.9

1/26/2002 18.1

12/11/2001 15.8

11/27/2001 15

1/13/2000 9.4

5/28/1998 30

11/22/1991 24

3/22/1991 25

MWL9 (LMW-9) 10/8/2009 0.81 0.78

7/10/2009 0.84 0.81

4/8/09 0.92 0.88

1/22/2009 0.98 0.96

10/7/2008 0.67 0.64

7/9/2008 0.66 0.63

4/3/2008 0.69 0.66

1/22/2008 0.92 0.88

11/21/2007 0.71 0.68

7/25/2007 0.7 0.67

6/7/2007 0.69 0.66

1/16/2007 0.57 0.55

10/25/2006 0.91 0.87

7/19/2006 0.595 0.572

4/28/2006 0.789 0.758

2/8/2006 3.41 3.28

11/1/2005 1.02 0.982

7/19/2005 0.624 0.599

4/27/2005 931 894

1/27/2005 0.543 0.522

2/3/10 Page 11 of 15 Table 5.10
Table 5.10

Letart Landfill APFO and PFOA in Groundwater

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA ** (ug/L)

Active Sampling Locations

MWL9 (LMW-9) (cont.) 11/9/2004 1.23

8/12/2004 0.583

5/20/2004 0.589

2/11/2004 0.547

12/5/2003 0.789

7/23/2003 0.803

5/20/2003 0.856

3/12/2003 0.625

10/17/2002 0.907

8/29/2002 0.479

5/24/2002 0.715

3/27/2002 0.631

2/23/2002 0.617

1/26/2002 0.875

12/10/2001 0.845

11/27/2001 0.612

10/7/1992 0.2

MWL13B (LMW-13B) 10/8/2009 Insufficient Flow Insufficient Flow

7/7/2009 Insufficient Flow Insufficient Flow

4/8/2009 Insufficient Flow Insufficient Flow

1/22/2009 Insufficient Flow Insufficient Flow

10/8/2008 Insufficient Flow Insufficient Flow

7/14/2008 Insufficient Flow Insufficient Flow

4/2/2008 Insufficient Flow Insufficient Flow

1/21/2008 Insufficient Flow Insufficient Flow

10/8/2007 dry dry

7/23/2007 Insufficient Flow Insufficient Flow

1/15/2007 Insufficient Flow Insufficient Flow

10/24/2006 dry dry

7/18/2006 dry dry

2/2/2006 2.51 2.41

10/31/2005 4.35 4.18

7/19/2005 3.27 3.14

4/28/2005 3.89 3.74

4/28/05 (dup) 3.74 3.59

1/27/2005 2.99 2.87

11/12/2004 5.48

7/24/2003 4.97

5/19/2003 0.603

3/11/2003 0.149

10/10/2002 0.0956

MWL14B (LMW-14B) 10/8/2009 Insufficient Flow Insufficient Flow

7/7/2009 Insufficient Flow Insufficient Flow

4/8/2009 Insufficient Flow Insufficient Flow

1/21/2009 Insufficient Flow Insufficient Flow

10/7/2008 Insufficient Flow Insufficient Flow

7/14/2008 Insufficient Flow Insufficient Flow

4/2/2008 Insufficient Flow Insufficient Flow

1/21/2008 Insufficient Flow Insufficient Flow

10/8/2007 dry dry

2/3/10 Page 12 of 15 Table 5.10
Table 5.10

Letart Landfill APFO and PFOA in Groundwater

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA ** (ug/L)

Active Sampling Locations

MWL14B (LMW-14B) (cont.) 7/23/2007 Insufficient Flow Insufficient Flow

4/13/2007 Insufficient Flow Insufficient Flow

1/15/2007 50 48

7/18/2006 51.8 49.8

4/27/2006 65.2 62.6

2/2/2006 Insufficient Flow Insufficient Flow

10/31/2005 Insufficient Flow Insufficient Flow

7/19/2005 75.3 72.3

4/28/2005 79 75.9

1/27/2005 Insufficient Flow Insufficient Flow

11/12/2004 254

7/24/2003 Insufficient Flow

5/19/2003 101

3/12/2003 70.4

10/10/2002 105

MWL15 (LMW-15) 7/7/2009 0.046 0.044

1/26/2009 0.46 0.44

7/9/2008 0.039 0.038

1/24/2008 0.27 0.26

7/26/2007 0.39 0.37

1/17/2007 0.25 0.24

MWL16 (LMW-16) 7/7/2009 2700 2600

1/26/2009 2200 2100

7/9/2008 2200 2100

1/24/2008 2200 2100

7/26/2007 2100 2000

1/17/2007 1500 1400

MWL17 (LMW-17) 7/7/2009 520 500

1/26/2009 400 380

7/9/2008 330 320

1/24/2008 350 340

7/26/2007 350 340

1/17/2007 250 240

2/3/10 Page 13 of 15 Table 5.10
Table 5.10 

Letart Landfill APFO and PFOA in Groundwater 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** (ug/L)

MWL3 (LMW-3) 8/12/2004 Insufficient Flow

5/19/2004 Insufficient Flow

2/11/2004 Insufficient Flow

12/4/2003 Insufficient Flow

7/24/2003 2060

5/21/2003 2030

3/11/2003 Insufficient Flow

10/11/2002 NQ (<0.05)

8/26/2002 Insufficient Flow

5/24/2002 2270

3/29/2002 1760

2/24/2002 1920

1/29/2002 1700

12/13/2001 1530

11/22/1991 1000

3/22/1991 390

MWL12 (LMW-12) 8/11/2004 Insufficient Flow

5/18/2004 Insufficient Flow

3/11/2004 Insufficient Flow

7/24/2003 Insufficient Flow

5/20/2003 Insufficient Flow

3/11/2003 Insufficient Flow

10/10/2002 Insufficient Flow

Historic Sampling Locations

C-Zone Wells

2/3/10 Page 14 of 15 Table 5.10
Table 5.10 

Letart Landfill APFO and PFOA in Groundwater 

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** (ug/L)

Historic Sampling Locations

MWL5A (LMW-5A) 8/12/2004 2230

5/18/2004 1270

2/10/2004 1010

12/4/2003 544

7/24/2003 473

5/21/2003 245

3/11/2003 134

10/11/2002 112

8/26/2002 Insufficient Flow

5/21/2002 87.6

3/27/2002 93.6

2/23/2002 82.2

1/26/2002 99.3

12/11/2001 94.5

11/22/1991 0.9

3/22/1991 1.6

MWL10 (LMW-10) 12/8/2003 Insufficient Flow

7/24/2003 Insufficient Flow

5/20/2003 Pump problems-Not sampled

3/11/2003 Insufficient Flow

10/17/2002

Instrumentation problems-Not 

sample

8/29/2002 Pump problems-Not sampled

5/21/2002 0.298

3/27/2002 0.136

2/23/2002 0.126

1/26/2002 0.133

12/13/2001 0.161

12/13/01 (dup) 0.135

11/27/2001 0.213

J = estimated value (below laboratory quantitation limit).

Note: Analytical method changed as of November 2001.

* APFO is also known as C-8 or FC-143.

** Both APFO and PFOA are reported starting with analysis performed after December 1, 2004.

D/E Zone Wells

Under F-Zone Wells

2/3/10 Page 15 of 15 Table 5.10
Table 5.11

Dry Run Landfill APFO and PFOA in Surface Water

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** ug/L

OUTLET 006@ 12/3/2009 0.068 0.065

12/3/2009 (dup) 0.08 0.077

11/17/2009 0.032 0.031

11/17/2009 (dup) 0.03 0.029

10/14/2009 0.029 0.028

10/14/2009 (dup) 0.035 0.034

9/21/2009 <0.0026 <0.0026

8/4/2009 <0.0026 <0.0026

8/4/2009 (dup) <0.0026 <0.0026

7/6/2009 0.49 0.47

6/1/09 0.52 0.5

6/1/2009 (dup) 0.61 0.59

5/6/09 NQ (<0.013) NQ (<0.013)

5/6/2009 (dup) NQ (<0.013) NQ (<0.013)

4/6/09 2 1.9

3/3/2009 1.2 1.2

3/3/09 (dup) 1.2 1.2

2/2/2009 1.2 1.2

1/19/2009 0.92 0.88

12/1/2008 0.64 0.61

12/1/08 (dup) 0.61 0.59

11/17/2008 0.019 0.018

10/9/2008 ND (<0.0017) ND (<0.0017)

9/16/2008 ND (<0.0023) ND (<0.0023)

8/18/2008 ND (<0.0023) ND (<0.0023)

8/18/08 (dup) ND (<0.0023) ND (<0.0023)

7/29/2008 1.7 1.6

6/18/2008 0.47 0.45

6/18/08 (dup) 0.47 0.45

5/12/2008 1.6 1.5

4/8/2008 1.6 1.5

4/8/08 (dup) 1.5 1.4

3/12/2008 3.1 3.0

3/12/08 (dup) 3.2 3.1

2/4/2008 3.7 3.6

2/4/08 (dup) 3.6 3.5

1/7/2008 2.2 2.1

12/27/2007 0.86 0.83

12/27/07 (dup) 0.91 0.87

11/15/2007 NQ (<0.016) NQ (<0.016)

10/24/2007 ND (<0.0031) ND (<0.0031)

9/20/2007 NQ (<0.016) NQ (<0.016)

7/2/2007 ND (<0.0012) ND (<0.0012)

6/14/2007 NQ (<0.013) NQ (<0.013)

5/15/2007 0.01 0.01

4/27/2007 0.033 0.032

4/27/07 (dup) 0.025 0.024

Active Sampling Locations

2/3/10 Page 1 of 12 Table 5.11
Table 5.11

Dry Run Landfill APFO and PFOA in Surface Water

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** ug/L

Active Sampling Locations

OUTLET 001@ 3/14/2007 77 74

2/21/2007 45 43

2/21/07 (dup) 45 43

1/4/2007 100 98

12/7/2006 87 84

11/10/2006 59 57

11/13/2006 67 64

11/2/2006 55 53

10/26/2006 45 43

10/19/2006 29 28

10/11/2006 26 25

10/5/2006 21 20

9/28/2006 23 22

9/21/2006 22 21

9/14/2006 23 22

9/7/2006 37 36

8/31/2006 42 40

8/22/2006 46 44

8/16/2006 43 41

8/10/2006 41 39

8/2/2006 50 48

7/26/2006 49.8 47.8

7/20/2006 54 52

7/11/2006 66 63

7/5/2006 61.6 59.1

6/29/2006 72.1 69.3

6/21/2006 82.4 79.2

6/15/2006 82.5 79.2

6/8/2006 92.3 88.7

5/4/2006 113 109

4/7/2006 101 97

3/14/2006 100 96.2

3/14/06 (dup) 103 98.7

2/15/2006 74.1 71.2

1/19/2006 51.9 49.9

12/13/2005 41.9 40.2

12/13/05 (dup) 41.5 39.9

11/9/2005 60.4 58

11/9/05 (dup) 62.3 59.8

10/7/2005 60.6 58.2

10/7/05 (dup) 57.9 55.6

9/27/2005 66.1 63.5

8/31/2005 47.6 45.7

8/31/05 (dup) 48.1 46.2

7/18/2005 80.6 77.4

6/15/2005 Insufficient Flow Insufficient Flow

5/5/2005 150 144

4/19/2005 124 119

4/19/05 (dup) 118 113

7/28/2004 Insufficient Flow

6/7/2004 81.7

5/19/2004 83.4

4/16/2004 91.7

3/30/2004 89.8

2/3/2004 51.7

1/27/2004 80.6

2/3/10 Page 2 of 12 Table 5.11
Table 5.11

Dry Run Landfill APFO and PFOA in Surface Water

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** ug/L

Active Sampling Locations

OUTLET 001@ (cont.) 12/5/2003 21.9

11/7/2003 29.1

10/22/2003 36.2

9/22/2003 37.5

8/13/2003 38.6

7/24/2003 39.7

6/13/2003 30.5

5/19/2003 88.8

4/30/2003 131

3/28/2003 88.5

2/26/2003 69

1/29/2003 88.4

12/30/2002 56.9

11/21/2002 64.6

10/30/2002 81.7

9/30/2002 Insufficient Flow

8/30/2002 Insufficient Flow

7/31/2002 Insufficient Flow

7/1/2002 Insufficient Flow

6/28/2002 Insufficient Flow

5/28/2002 30.9

4/24/2002 41

3/25/2002 71.6

2/25/2002 43.9

1/28/2002 41.6

12/12/2001 Insufficient Flow

10/3/2000 31.5

12/29/1999 66

5/19/1998 17

4/9/1996 86

OUTLET 003 12/3/2009 2.6 2.4

11/17/2009 Insufficient Flow Insufficient Flow

10/9/2009 3.1 3

9/26/2009 2 1.9

9/20/2009 1.6 1.5

7/23/2009 17 16

6/4/2009 2.8 2.7

6/4/09 2.8 2.7

5/26/09 4.5 4.3

5/4/09 1.9 1.8

4/3/09 3 2.9

3/26/2009 5.5 5.3

2/11/2009 2.5 2.4

1/7/2009 1.5 1.4

12/1/2008 3.6 3.6

11/15/2008 2.4 2.3

9/9/2008 Insufficient Flow Insufficient Flow

8/27/2008 1.2 1.2

7/27/2008 10 9.8

6/4/2008 1.2 1.2

5/9/2008 5.2 5

4/28/2008 11 11

3/4/2008 2.2 2.1

2/4/2008 6.7 6.4

1/7/2008 8 7.7

12/3/2007 6.2 5.9

2/3/10 Page 3 of 12 Table 5.11
Table 5.11

Dry Run Landfill APFO and PFOA in Surface Water

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** ug/L

Active Sampling Locations

OUTLET 003 (cont.) 11/15/2007 4.7 4.5

10/24/2007 3 2.9

9/11/2007 2.5 2.4

8/22/2007 1.2 1.2

8/17/2007 Insufficient Flow Insufficient Flow

8/16/2007 Insufficient Flow Insufficient Flow

7/27/2007 Insufficient Flow Insufficient Flow

6/19/2007 16 15

6/14/2007 dry dry

6/6/2007 dry dry

5/16/2007 dry dry

5/15/2007 dry dry

4/27/2007 10 10

4/12/2007 10 9.8

3/15/2007 9.4 9.2

2/21/2007 25 24

1/5/2007 21 20

12/22/2006 12 12

11/13/2006 11 11

10/11/2006 Insufficient Flow Insufficient Flow

10/5/2006 20 19

9/7/2006 17 16

8/31/2006 10 9.6

7/13/2006 14 13

6/26/2006 13.8 13.3

5/11/2006 32.6 31.3

4/7/2006 35.9 34.5

3/14/2006 29.6 28.4

2/23/2006 Insufficient Flow Insufficient Flow

2/15/2006 Insufficient Flow Insufficient Flow

1/30/2006 Insufficient Flow Insufficient Flow

1/19/2006 Insufficient Flow Insufficient Flow

12/16/2005 35.2 33.8

11/9/2005 36.6 35.2

10/7/2005 14.7 14.1

9/26/2005 dry dry

8/26/2005 13.1 12.6

8/18/2005 9.65 9.27

7/18/2005 Insufficient Flow Insufficient Flow

6/29/2005 Insufficient Flow Insufficient Flow

5/20/2005 24.4 23.5

7/28/2004 Insufficient Flow

6/7/2004 Insufficient Flow

5/19/2004 20.2

4/16/2004 24.8

3/30/2004 14.7

2/3/2004 9.55

1/27/2004 18.4

12/5/2003 10.4

11/7/2003 18.4

10/22/2003 Insufficient Flow

9/22/2003 16.1

8/13/2003 Insufficient Flow

7/24/2003 27.6

6/13/2003 10.3

5/31/2003 Insufficient Flow

2/3/10 Page 4 of 12 Table 5.11
Table 5.11

Dry Run Landfill APFO and PFOA in Surface Water

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** ug/L

Active Sampling Locations

OUTLET 003 (cont.) 4/30/2003 Insufficient Flow

3/31/2003 Insufficient Flow

2/28/2003 Insufficient Flow

1/31/2003 Insufficient Flow

12/30/2002 Insufficient Flow

11/30/2002 Insufficient Flow

10/30/2002 Insufficient Flow

9/30/2002 Insufficient Flow

8/30/2002 Insufficient Flow

7/1/2002 25.3

6/28/2002 Insufficient Flow

5/28/2002 Insufficient Flow

4/29/2002 20.1

3/26/2002 6.77

2/25/2002 Insufficient Flow

1/28/2002 Insufficient Flow

12/12/2001 Insufficient Flow

OUTLET 004 12/3/2009 1.9 1.8

11/17/2009 Insufficient Flow Insufficient Flow

10/9/2009 0.59 0.57

9/26/2009 1.1 1.1

8/20/2009 1.4 1.3

7/23/2009 1 0.98

6/4/09 1.9 1.8

5/26/09 1.7 1.6

5/4/09 1.4 1.3

4/3/09 2.9 2.8

3/26/2009 1.9 1.8

2/11/2009 2.6 2.5

1/7/2009 1.5 1.4

12/1/2008 2.2 2.1

11/15/2008 1 1

9/9/2008 Insufficient Flow Insufficient Flow

8/27/2008 1.2 1.2

7/27/2008 1.9 1.8

6/4/2008 1.1 1.1

5/9/2008 2.6 2.5

4/28/2008 2.5 2.4

3/4/2008 3.4 3.3

2/4/2008 4.8 4.6

1/7/2008 50 48

12/3/2007 8.1 7.8

11/15/2007 9.4 9

10/24/2007 2 1.9

9/11/2007 2.5 2.4

8/22/2007 3.1 3

8/17/2007 Insufficient Flow Insufficient Flow

8/16/2007 Insufficient Flow Insufficient Flow

7/27/2007 3.7 3.6

6/19/2007 2.9 2.8

6/14/2007 dry dry

6/6/2007 dry dry

5/16/2007 dry dry

5/15/2007 dry dry

4/27/2007 Insufficient Flow Insufficient Flow

4/12/2007 22 21

2/3/10 Page 5 of 12 Table 5.11
Table 5.11

Dry Run Landfill APFO and PFOA in Surface Water

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** ug/L

Active Sampling Locations

OUTLET 004 (cont.) 3/15/2007 11 11

2/21/2007 16 15

1/5/2007 15 14

12/22/2006 15 14

11/16/2006 53 51

11/13/2006 Insufficient Flow Insufficient Flow

10/11/2006 Insufficient Flow Insufficient Flow

10/5/2006 25 24

9/21/2006 7.2 6.9

8/31/2006 2.5 2.4

7/11/2006 Insufficient Flow Insufficient Flow

6/27/2006 4.37 4.19

5/11/2006 9.92 9.53

4/7/2006 11 10.6

3/14/2006 95.4 91.6

2/23/2006 Insufficient Flow Insufficient Flow

2/15/2006 frozen frozen

1/30/2006 Insufficient Flow Insufficient Flow

1/19/2006 Insufficient Flow Insufficient Flow

12/16/2005 7.86 7.55

11/9/2005 24.1 23.2

10/7/2005 2.27 2.18

9/26/2005 Insufficient Flow Insufficient Flow

8/26/2005 2.83 2.72

8/18/2005 0.673 0.646

7/18/2005 Insufficient Flow Insufficient Flow

6/29/2005 Insufficient Flow Insufficient Flow

5/20/2005 0.336 0.323

7/28/2004 0.304

6/7/2004 0.533

5/19/2004 0.416

4/16/2004 0.422

3/30/2004 0.539

2/3/2004 17.5

1/27/2004 Insufficient Flow

12/5/2003 0.398

11/7/2003 0.356

10/22/2003 Insufficient Flow

9/22/2003 0.354

8/13/2003 Insufficient Flow

7/24/2003 0.243

6/13/2003 0.461

5/19/2003 0.543

4/30/2003 Insufficient Flow

3/31/2003 Insufficient Flow

2/28/2003 Insufficient Flow

1/31/2003 Insufficient Flow

12/30/2002 Insufficient Flow

11/30/2002 Insufficient Flow

10/30/2002 Insufficient Flow

9/30/2002 Insufficient Flow

8/30/2002 Insufficient Flow

7/1/2002 0.7

6/28/2002 Insufficient Flow

5/28/2002 Insufficient Flow

4/27/2002 Insufficient Flow

2/3/10 Page 6 of 12 Table 5.11
Table 5.11

Dry Run Landfill APFO and PFOA in Surface Water

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** ug/L

Active Sampling Locations

OUTLET 004 (cont.) 3/26/2002 158

2/25/2002 Insufficient Flow

1/28/2002 Insufficient Flow

12/12/2001 Insufficient Flow

LM1 (LM1 LEACHATE; 10/14/2009 34 33

DRLEACHATE) 8/31/2009 57 55

6/1/09 33 32

2/11/2009 64 61

11/20/2008 45 43

8/15/2008 54 52

4/30/2008 45 43

1/7/2008 72 69

12/12/2007 67 64

8/3/2007 57 55

6/14/2007 41 39

2/1/2007 72 69

12/7/2006 65 62

9/14/2006 58 56

6/12/2006 64.4 61.8

2/23/2006 124 119

11/9/2005 119 114

9/28/2005 109 105

9/28/05 (dup) 80.8 77.6

6/15/2005 86.2

5/18/2005 155

5/11/2005 157

5/5/2005 109

4/19/2005 119

5/20/2003 135

3/28/2003 99.7

10/30/2002 704

5/28/2002 150

4/24/2002 237

3/25/2002 334

2/25/2002 256

1/28/2002 398

12/12/2001 109

10/3/2000 27.4

12/29/1999 34

5/19/1998 56

7/22/1997 62

LM2 (LM2 LEACHATE; 12/3/2009 4.7 4.6

DRLEACHATE) 11/17/2009 4.6 4.4

10/14/2009 0.79 0.76

9/21/2009 6.5 6.2

8/4/2009 1.4 1.3

7/6/2009 4.9 4.7

6/1/09 5.2 5

5/6/09 7.3 7

4/6/09 11 11

3/3/2009 8.3 8

2/2/2009 3.6 3.5

1/19/2009 6 5.8

12/1/2008 5.3 5.1

11/17/2008 4.1 3.9

10/9/2008 47 45

2/3/10 Page 7 of 12 Table 5.11
Table 5.11

Dry Run Landfill APFO and PFOA in Surface Water

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** ug/L

Active Sampling Locations

LM2 (LM2 LEACHATE; 9/16/2008 22 21

DRLEACHATE) 8/18/2008 6.6 6.3

7/29/2008 4.6 4.4

6/18/2008 6.2 6

5/12/2008 4.9 4.7

4/30/2008 14 13

3/12/2008 10 9.9

2/4/2008 9.9 9.7

1/7/2008 17 16

12/27/2007 10 10

11/15/2007 14 13

10/24/2007 7.1 6.8

9/20/2007 7.2 6.9

9/20/07 (dup) 7.3 7

8/3/2007 & &

7/2/2007 70 67

6/14/2007 74 71

5/15/2007 100 96

4/27/2007 110 110

SS-1 (STREAM SAMPLING 12/3/2009 0.86 0.83

POINT#1) 11/17/2009 Insufficient Flow Insufficient Flow

10/14/2009 0.58 0.56

8/4/2009 1 1

7/6/2009 1.4 1.3

6/1/09 0.88 0.85

5/6/09 0.71 0.68

4/6/09 0.81 0.78

3/3/2009 0.58 0.56

2/2/2009 0.61 0.59

1/19/2009 Insufficient Flow Insufficient Flow

12/1/2008 0.93 0.89

11/17/2008 0.64 0.61

9/16/2008 Insufficient Flow Insufficient Flow

8/18/2008 Insufficient Flow Insufficient Flow

7/29/2008 1 0.97

6/18/2008 1 0.98

5/12/2008 0.92 0.88

4/8/2008 0.66 0.63

3/12/2008 0.76 0.73

2/4/2008 1.2 1.2

1/7/2008 4 3.8

12/27/2007 2 1.9

11/15/2007 1.6 1.5

10/24/2007 1 1

9/20/2007 dry dry

7/2/2007 1.7 1.6

6/14/2007 1.6 1.5

5/15/2007 0.087 0.084

4/27/2007 1.5 1.4

3/14/2007 36 35

2/21/2007 1.5 1.4

1/4/2007 0.97 0.93

12/7/2006 0.96 0.92

11/13/2006 0.96 0.92

10/5/2006 1.7 1.6

9/7/2006 1.4 1.3

2/3/10 Page 8 of 12 Table 5.11
Table 5.11

Dry Run Landfill APFO and PFOA in Surface Water

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** ug/L

Active Sampling Locations

SS-1 (STREAM SAMPLING 8/31/2006 0.93 0.89

POINT#1) (cont.) 7/11/2006 1.8 1.7

6/8/2006 1.36 1.31

5/4/2006 1.39 1.33

4/7/2006 1.86 1.79

3/14/2006 3.33 3.2

2/15/2006 1.03 0.987

1/19/2006 1.11 1.07

12/13/2005 0.906 0.87

11/9/2005 3.27 3.14

10/7/2005 1.99 1.91

9/27/2005 2.03 1.95

8/26/2005 1.53 1.47

7/1/2005 1.71 1.64

6/15/2005 1.83 1.74

5/5/2005 1.51 1.45

4/19/2005 1.39 1.33

5/19/2003 1.13

3/28/2003 1.24

10/30/2002 1.63

8/30/2002 Insufficient Flow

5/28/2002 1.63

4/24/2002 0.932

3/25/2002 1.06

2/25/2002 0.85

1/28/2002 0.893

12/12/2001 1.19

10/3/2000 0.758

12/29/1999 0.54

5/19/1998 1

SS-2 (STREAM SAMPLING 12/3/2009 0.29 0.28

POINT#2) 11/17/2009 0.066 0.063

10/14/2009 0.061 0.059

9/21/2009 0.021 0.02

9/21/2009 (dup) 0.023 0.022

8/4/2009 0.048 0.046

7/6/2009 0.62 0.6

7/6/2009 (dup) 0.61 0.59

6/1/09 0.67 0.64

5/6/09 0.17 0.16

4/6/09 1.5 1.4

3/3/2009 1.5 1.4

2/2/2009 1.1 1.1

1/19/2009 1 1

12/1/2008 0.73 0.7

11/17/2008 0.069 0.066

10/9/2008 0.8 0.77

9/16/2008 0.36 0.35

8/18/2008 0.048 0.046

7/29/2008 2.1 2

7/29/08 (dup) 2.1 2

6/18/2008 0.64 0.61

5/12/2008 1.2 1.2

4/8/2008 1.6 1.5

3/12/2008 2.6 2.5

2/4/2008 3.2 3.1

2/3/10 Page 9 of 12 Table 5.11
Table 5.11

Dry Run Landfill APFO and PFOA in Surface Water

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** ug/L

Active Sampling Locations

SS-2 (STREAM SAMPLING 1/7/2008 2.8 2.7

POINT#2) (cont.) 12/27/2007 7.9 7.6

11/15/2007 0.36 0.35

10/24/2007 0.98 0.94

9/20/2007 0.2 0.19

7/2/2007 0.5 0.48

6/14/2007 0.46 0.44

5/15/2007 0.083 0.08

4/27/2007 0.41 0.39

3/14/2007 75 72

2/21/2007 9.6 9.2

1/4/2007 34 33

1/4/07 (dup) 36 35

12/7/2006 29 28

11/13/2006 12 12

10/5/2006 6.6 6.3

9/7/2006 35 34

8/31/2006 11 11

7/11/2006 40 38

6/8/2006 38 36.5

5/4/2006 55.4 53.2

4/7/2006 11.3 10.9

4/7/06 (dup) 10.8 10.4

3/14/2006 29 27.9

2/15/2006 28.6 27.5

1/19/2006 25.3 24.3

12/13/2005 23.1 22.2

11/9/2005 28.7 27.6

10/7/2005 21 20.2

9/27/2005 5.31 5.1

8/26/2005 9.44 9.07

7/1/2005 19.1 18.3

6/15/2005 28.7 27.5

6/15/05 (dup) 27.2 26.1

5/5/2005 73.5 70.6

4/19/2005 65.7 63.1

5/19/2003 17.4

3/28/2003 61.1

10/30/2002 29.2

8/20/2002 Insufficient Flow

5/28/2002 51

4/24/2002 28.9

3/25/2002 66.6

2/25/2002 24.3

1/28/2002 42.4

12/12/2001 20.5

10/3/2000 27.6

12/29/1999 87

5/19/1998 4.6

PROPERTY BOUNDARY 10/5/2006 1.4 1.3

9/14/2006 3.6 3.5

7/11/2006 5.8 5.6

6/8/2006 6.32 6.07

5/4/2006 10.5 10.1

1/19/2006 3.67 3.53

12/13/2005 3.35 3.22

2/3/10 Page 10 of 12 Table 5.11
Table 5.11

Dry Run Landfill APFO and PFOA in Surface Water

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** ug/L

Active Sampling Locations

PROPERTY BOUNDARY 11/9/2005 4.55 4.37

(cont.) 10/7/2005 13.4 12.9

8/31/2005 5.16 4.96

7/18/2005 10.5 10

5/19/2003 2.97

3/28/2003 11.3

10/30/2002 3.8

8/30/2002 Insufficient Flow

5/28/2002 9.41

4/24/2002 6.69

3/25/2002 22.8

2/25/2002 3.81

1/28/2002 11.1

12/12/2001 3.99

10/3/2000 10.3

12/29/1999 39

7/14/1998 0.88

4/9/1996 9.9

Raw Sump ^ 3/5/2007 86 83

Finish Water ^ 3/5/2007 NQ (<0.0051) NQ (<0.0051)

Sediment Bag Discharge ^ 3/14/2007 78 75

Pond Overflow 6/4/2008 3.7 3.6

Pond Overflow 3/19/2008 8.2 7.9

Pond Overflow 12/13/2007 9.2 8.8

Pond Overflow 12/10/2007 9.2 8.8

Pond Overflow 12/3/2007 12 12

2/3/10 Page 11 of 12 Table 5.11
Table 5.11

Dry Run Landfill APFO in Surface Water

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA ** (ug/L)

DOWN STREAM 6/22/2005 6.54

DOWN STREAM 4/9/1996 25

N. OR DRL (BEAMAN) 8/18/2005 0.55 0.528

W. SW DITCH 8/18/2005 9.21 8.85

POND RAMP 8/18/2005 60.6 58.2

LEACHATE 2 (above the pond 

in the sump hole)

7/13/2005 0.0945 0.0908

OUTLET 005 (POND 3/14/2007 42 40

UNDERDRAIN)@ 2/21/2007 17 16

1/4/2007 40 38

12/7/2006 29 28

11/13/2006 29 28

10/5/2006 16 15

9/7/2006 34 33

8/31/2006 42 40

8/2/2006 56 54

7/11/2006 50 48

6/8/2006 64.1 61.6

5/4/2006 66.1 63.5

4/7/2006 56.3 54.1

3/14/2006 29.8 28.6

2/15/2006 48 46.1

2/15/06 (dup) 50.3 48.3

1/19/2006 26.4 25.4

12/13/2005 34.5 33.1

11/9/2005 35 33.6

10/7/2005 58.9 56.6

9/27/2005 60.6 58.2

8/18/2005 65.6 63

7/5/2005 38.4 36.9

6/15/2005 41.5 39.9

5/5/2005 41.4 39.8

4/19/2005 51.6 49.5

5/19/2003 48.7

3/28/2003 53.3

10/30/2002 38.8

5/28/2002 67.4

4/24/2002 33.4

3/25/2002 66.7

2/25/2002 37.1

1/28/2002 29.3

12/12/2001 35.4

Note: Analytical method changed as of November 2001 (see Section 2.0 for details).

*APFO is also known as C-8 or FC-143.

** Both APFO and PFOA are reported starting with analyses performed after December 1, 2004.

^ Samples collected during GAC Treatment system construction.

@ Outlet 001 was converted into Outlet 006 in March 2007. Outlet 005 was combined with Outlet 001

in March 2007, but Outlet 005 can still be used as a bypass, if needed.

& Samples not collected due to pond O&M activities.

Historic Sampling Locations

2/3/10 Page 12 of 12 Table 5.11
Table 5.12

Dry Run Landfill APFO and PFOA in Groundwater

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** (ug/L)

MW-6A (DRMW-6A) 10/21/2009 1.1 1.1

7/15/2009 1.4 1.3

4/17/09 0.98 0.94

1/12/2009 0.87 0.84

10/21/2008 1.1 1.1

7/16/2008 0.95 0.91

4/21/2008 0.76 0.73

1/11/2008 0.76 0.73

10/5/2007 1.6 1.5

7/18/2007 1.6 1.5

4/11/2007 1.1 1.1

1/11/2007 1.2 1.2

10/12/2006 1.8 1.7

7/13/2006 1.76 1.69

4/5/2006 1.39 1.33

1/11/2006 1.15 1.1

10/4/2005 2.61 2.51

7/12/2005 1.6 1.54

5/2/2005 1.18 1.13

1/25/2005 0.856 0.822

11/11/2004 2.91

8/10/2004 2.29

8/10/04 (dup) 2.25

5/27/2004 1.37

2/16/2004 0.964

12/3/2003 0.891

8/20/2003 1.63

5/14/2003 1.59

2/27/2003 0.727

10/9/2002 1.13

8/28/2002 0.785

5/22/2002 1.24

3/30/2002 0.843

2/20/2002 0.822

1/27/2002 0.824

12/12/2001 1.05

12/12/01 (dup) 1.03

7/20/2000 0.212

7/21/1999 0.096

5/26/1998 0.27

7/22/1997 0.36

4/10/1996 0.19

Active Sampling Locations

Overburden

2/3/10 Page 1 of 12 Table 5.12
Table 5.12

Dry Run Landfill APFO and PFOA in Groundwater

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** (ug/L)

Active Sampling Locations

MW-12A (DRMW-12A) 10/20/2009 0.14 0.13

7/14/2009 0.1 0.1

4/15/09 0.1 0.1

1/14/2009 0.12 0.12

10/22/2008 0.14 0.13

7/17/2008 0.11 0.11

4/21/2008 0.1 0.098

1/10/2008 0.17 0.16

10/4/2007 0.12 0.12

7/17/2007 0.099 0.095

4/10/2007 0.077 0.074

1/11/2007 0.083 0.08

10/10/2006 0.12 0.12

7/13/2006 0.081 0.0778

4/4/2006 0.103 0.0985

1/11/2006 0.0813 0.0781

10/5/2005 0.13 0.125

7/12/2005 0.0868 0.0834

5/2/2005 0.0843 0.081

1/25/2005 0.0656 0.063

11/11/2004 0.134

8/10/2004 0.116

5/27/2004 0.0616

2/16/2004 NQ (<0.05)

12/3/2003 0.0587

12/3/03 (dup) 0.0689

8/20/2003 0.0612

5/13/2003 0.0547

2/27/2003 0.059

10/9/2002 0.181

8/28/2002 0.088

5/22/2002 0.0832

3/30/2002 0.0785

2/20/2002 0.125

2/20/02 (dup) 0.115

1/25/2002 0.168

12/12/2001 0.158

7/19/2000 0.128

7/21/1999 0.081 J

5/26/1998 <0.10

7/22/1997 <0.1

4/10/1996 <0.1

2/3/10 Page 2 of 12 Table 5.12
Table 5.12

Dry Run Landfill APFO and PFOA in Groundwater

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** (ug/L)

Active Sampling Locations

MW-12B (DRMW-12B) 10/20/2009 0.12 0.12

7/14/2009 0.12 0.12

4/15/09 0.11 0.11

1/14/2009 0.1 0.099

10/22/2008 0.14 0.13

7/17/2008 0.1 0.1

4/21/2008 0.085 0.082

1/10/2008 0.14 0.13

10/4/2007 0.1 0.096

7/17/2007 0.088 0.085

4/10/2007 0.1 0.097

1/11/2007 0.13 0.12

10/10/2006 0.1 0.1

7/13/2006 0.0869 0.0835

4/4/2006 0.132 0.127

1/11/2006 0.0893 0.0858

10/5/2005 0.141 0.135

7/12/2005 0.0865 0.0831

5/2/2005 0.106 0.100

1/25/2005 0.0797 0.0782

11/11/2004 0.136

8/10/2004 0.126

5/27/2004 0.0708

5/27/04 (dup) 0.0691

2/16/2004 0.092

12/3/2003 0.0871

8/20/2003 0.0699

8/20/03 (dup) 0.0686

5/13/2003 0.0649

2/27/2003 0.05

2/27/03 (dup) 0.052

10/9/2002 0.258

10/9/02 (dup) 0.242

8/28/2002 NQ (<0.05)

5/22/2002 NQ (<0.05)

3/30/2002 NQ (<0.05)

3/30/02 (dup) NQ (<0.05)

2/20/2002 NQ (<0.05)

1/25/2002 0.073

1/25/02 (dup) 0.085

12/12/2001 0.215

7/20/2000 ND (0.029)

7/21/1999 5.4

6/16/1998 <0.1

2/3/10 Page 3 of 12 Table 5.12
Table 5.12

Dry Run Landfill APFO and PFOA in Groundwater

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** (ug/L)

Active Sampling Locations

MW-13A (DRMW-13A) 10/20/2009 2.3 2.2

7/14/2009 2 1.9

4/16/09 2.1 2

1/14/2009 2.1 2

10/21/2008 5.2 5

7/16/2008 1.5 1.4

4/22/2008 1.2 1.2

1/10/2008 2.1 2

10/4/2007 6.7 6.4

7/18/2007 2.9 2.8

4/10/2007 1.9 1.8

1/11/2007 2.2 2.1

10/10/2006 3.5 3.4

7/13/2006 3.32 3.19

4/4/2006 4.58 4.4

1/11/2006 3.31 3.18

10/4/2005 6.53 6.27

7/11/2005 2.92 2.8

5/2/2005 1.9 1.82

1/25/2005 1.57 1.51

11/11/2004 10.3

8/10/2004 5.05

5/27/2004 2.16

2/16/2004 1.48

12/3/2003 2.35

8/20/2003 4.38

5/13/2003 3.23

2/27/2003 1.5

10/9/2002 6.66

8/28/2002 5.14

5/22/2002 2.31

3/30/2002 4

2/20/2002 3.73

1/25/2002 5.97

12/12/2001 6.4

7/20/2000 9.9

7/21/1999 0.070 J

5/26/1998 8.7

7/22/1997 15

4/10/1996 8.2

4/10/1996 (dup) 11

2/3/10 Page 4 of 12 Table 5.12
Table 5.12

Dry Run Landfill APFO and PFOA in Groundwater

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** (ug/L)

Active Sampling Locations

MW-21A (DRMW-21A) 10/21/2009 0.22 0.21

10/21/2009 (dup) 0.23 0.22

7/14/2009 0.20 0.19

7/14/09 (dup) 0.21 0.20

4/16/09 0.23 0.22

1/13/2009 0.19 0.18

1/13/09 (dup) 0.17 0.16

10/22/2008 0.18 0.17

10/22/08 (dup) 0.18 0.17

7/16/2008 0.23 0.22

7/16/08 (dup) 0.24 0.23

4/22/2008 0.28 0.27

1/9/2008 0.17 0.16

10/4/2007 0.15 0.14

7/17/2007 0.16 0.15

4/11/2007 0.26 0.25

1/11/2007 0.25 0.24

10/10/2006 0.31 0.3

10/10/06 (dup) 0.32 0.31

7/13/2006 0.221 0.212

7/13/06 (dup) 0.213 0.205

4/4/2006 0.217 0.208

4/4/06 (dup) 0.224 0.215

1/10/2006 0.281 0.27

10/4/2005 0.253 0.243

7/11/2005 0.161 0.155

4/29/2005 0.3 0.288

8/21/2003 0.157

5/16/2003 0.37

2/28/2003 0.138

10/9/2002 0.27

MW-16B (DRMW-16B) 10/19/2009 NQ (<0.01) NQ (<0.01)

7/13/2009 0.017 0.016

4/14/09 0.015 0.014

1/12/2009 0.014 0.013

10/21/2008 0.016 0.015

7/15/2008 NQ (<0.012) NQ (<0.012)

4/21/2008 0.031 0.03

1/9/2008 0.045 0.043

10/3/2007 NQ (<0.016) NQ (<0.016)

7/16/2007 0.031 0.03

4/9/2007 0.097 0.093

1/10/2007 0.11 0.11

10/12/2006 0.15 0.14

7/12/2006 0.13 0.125

4/3/2006 0.0788 0.0757

1/10/2006 0.0811 0.0779

10/3/2005 0.168 0.161

A-Zone Wells

2/3/10 Page 5 of 12 Table 5.12
Table 5.12

Dry Run Landfill APFO and PFOA in Groundwater

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** (ug/L)

Active Sampling Locations

MW-16B (DRMW-16B) 7/11/2005 0.172 0.165

(cont.) 4/26/2005 0.294

8/22/2003 NQ (<0.05)

5/16/2003 NQ (<0.05)

2/28/2003 ND (<0.01)

10/8/2002 NQ (<0.05)

MW-17B (DRMW-17B) 10/19/2009 0.037 0.036

7/13/2009 0.035 0.034

4/14/09 0.039 0.037

1/12/2009 0.036 0.035

10/21/2008 0.041 0.039

7/15/2008 0.029 0.028

4/21/2008 0.035 0.034

1/9/2008 0.042 0.04

10/3/2007 0.039 0.037

7/16/2007 0.046 0.044

4/9/2007 0.048 0.046

1/10/2007 0.036 0.035

10/12/2006 0.064 0.061

7/12/2006 0.0761 0.0731

4/3/2006 0.0786 0.0755

1/10/2006 0.0592 0.0569

10/3/2005 0.0879 0.0844

7/11/2005 0.0687 0.066

4/26/2005 0.0736

8/21/2003 NQ (<0.05)

3/3/2003 Not Sampled***

10/8/2002 0.155

MW-18B (DRMW-18B) 10/19/2009 NQ (<0.01) NQ (<0.01)

7/13/2009 NQ (<0.013) NQ (<0.013)

4/14/09 NQ (<0.013) NQ (<0.013)

1/12/2009 NQ (<0.013) NQ (<0.013)

10/20/2008 0.014 0.013

7/15/2008 NQ (<0.012) NQ (<0.012)

4/22/2008 NQ (<0.0096) NQ (<0.0096)

1/9/2008 0.012 0.012

10/3/2007 NQ (<0.016) NQ (<0.016)

7/16/2007 0.0087 0.0084

4/9/2007 NQ (<0.013) NQ (<0.013)

1/10/2007 0.0065 0.0062

10/11/2006 0.023 0.022

7/12/2006 NQ (<0.013) NQ (<0.05)

4/3/2006 0.0119 0.0114

1/10/2006 0.0153 0.0147

10/3/2005 0.0173 0.0165

7/11/2005 0.0125 0.012

4/29/2005 NQ (<0.05)

4/29/05 (dup) NQ (<0.05)

8/21/2003 NQ (<0.05)

2/3/10 Page 6 of 12 Table 5.12
Table 5.12

Dry Run Landfill APFO and PFOA in Groundwater

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** (ug/L)

Active Sampling Locations

MW-18B (DRMW-18B) 5/15/2003 NQ (<0.05)

(cont.) 3/3/2003 Not Sampled***

10/7/2002 ND (<0.01)

MW-19B (DRMW-19B) 10/19/2009 0.011 0.011

7/13/2009 0.02 0.019

4/14/09 0.014 0.013

1/12/2009 0.015 0.014

10/20/2008 0.011 0.011

7/15/2008 NQ (<0.012) NQ (<0.012)

4/22/2008 0.012 0.012

1/9/2008 0.014 0.013

10/3/2007 NQ (<0.016) NQ (<0.016)

7/17/2007 0.02 0.019

4/9/2007 0.017 0.016

4/9/07 (dup) 0.028 0.027

1/10/2007 0.016 0.015

10/11/2006 0.019 0.018

7/12/2006 0.0148 0.0142

4/3/2006 0.0225 0.0216

1/10/2006 0.0197 0.0189

10/3/2005 0.0332 0.0319

7/11/2005 0.0201 0.0193

4/26/2005 NQ (<0.05)

8/21/2003 NQ (<0.05)

5/15/2003 NQ (<0.05)

2/28/2003 NQ (<0.05)

10/7/2002 NQ (<0.05)

MW-20B (DRMW-20B) 10/19/2009 0.027 0.026

7/13/2009 0.042 0.04

4/17/09 0.032 0.031

1/12/2009 0.03 0.029

10/20/2008 0.029 0.028

7/15/2008 0.021 0.02

4/22/2008 0.028 0.027

1/9/2008 0.044 0.042

10/3/2007 0.032 0.031

7/17/2007 0.045 0.043

4/9/2007 0.05 0.048

1/10/2007 0.04 0.038

10/11/2006 0.064 0.061

7/12/2006 0.0501 0.0481

4/3/2006 0.0641 0.0616

1/10/2006 0.0453 0.0435

1/10/06 (dup) 0.0461 0.0443

10/3/2005 0.0677 0.065

7/11/2005 0.0454 0.0436

4/29/2005 0.0528

4/29/05 (dup) 0.0603

8/22/2003 NQ (<0.05)

2/3/10 Page 7 of 12 Table 5.12
Table 5.12

Dry Run Landfill APFO and PFOA in Groundwater

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** (ug/L)

Active Sampling Locations

MW-20B (DRMW-20B) 5/15/2003 ND (<0.01)

(cont.) 2/28/2003 NQ (<0.05)

10/8/2002 NQ (<0.05)

MW-12 (DRMW-12) 10/20/2009 0.1 0.1

7/14/2009 0.097 0.093

4/15/09 0.1 0.1

1/14/2009 0.097 0.093

10/22/2008 0.081 0.078

7/17/2008 0.035 0.034

4/21/2008 0.082 0.079

1/10/2008 0.075 0.072

1/10/08 (dup) 0.074 0.071

10/4/2007 NQ (<0.016) NQ (<0.016)

7/17/2007 0.067 0.064

4/10/2007 0.075 0.072

1/11/2007 0.077 0.074

10/10/2006 0.078 0.075

7/13/2006 0.0713 0.0685

4/4/2006 0.0955 0.0917

1/11/2006 0.08 0.0769

10/5/2005 0.0959 0.0921

7/12/2005 0.0678 0.0651

7/12/05 (dup) 0.0704 0.0676

5/2/2005 0.0702 0.0674

1/25/2005 0.0661 0.0635

1/25/05 (dup) 0.0647 0.0621

11/11/2004 0.109

8/10/2004 0.0957

5/27/2004 0.059

2/16/2004 0.0612

2/16/04 dup 0.0657

12/3/2003 0.0606

8/20/2003 0.0586

5/13/2003 0.0714

5/13/03 (dup) 0.0787

2/27/2003 0.101

10/9/2002 0.109

8/28/2002 0.0626

5/22/2002 0.0817

3/30/2002 0.0929

2/20/2002 0.11

1/25/2002 0.116

12/12/2001 0.086

7/19/2000 0.16

7/21/1999 0.134

5/26/1998 <0.10

7/22/1997 <0.1

4/10/1996 <0.1

B-Zone Wells

2/3/10 Page 8 of 12 Table 5.12
Table 5.12

Dry Run Landfill APFO and PFOA in Groundwater

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** (ug/L)

Active Sampling Locations

MW-13 (DRMW-13) 10/20/2009 26 25

7/14/2009 23 22

4/16/09 23 22

1/14/2009 24 23

10/21/2008 25 24

7/16/2008 18 17

4/22/2008 20 19

1/10/2008 23 22

10/4/2007 7.8 7.5

7/18/2007 23 22

4/10/2007 23 22

1/11/2007 23 22

10/10/2006 23 22

7/16/2006 21.7 20.8

4/4/2006 27.5 26.4

1/11/2006 23.4 22.5

10/4/2005 33.9 32.6

7/11/2005 21.6 20.7

5/2/2005 28.3 27.2

1/25/2005 20.5 19.7

11/11/2004 39.0

11/11/04 (dup) 42.9

8/10/2004 33.9

5/27/2004 22.2

2/16/2004 22

12/3/2003 11.1

8/20/2003 17.8

5/13/2003 22.8

2/27/2003 15

10/9/2002 20.9

8/28/2002 13.1

8/28/02 (dup) 14.6

5/22/2002 16.9

3/30/2002 12.6

2/20/2002 11.5

1/25/2002 16.5

12/12/2001 9.86

7/20/2000 9.8

7/21/1999 3.6

5/26/1998 9.2

7/22/1997 7

2/3/10 Page 9 of 12 Table 5.12
Table 5.12

Dry Run Landfill APFO and PFOA in Groundwater

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** (ug/L)

Active Sampling Locations

MW-15 (DRMW-15) 10/21/2009 3.6 3.5

7/15/2009 4.3 4.1

4/17/09 4.9 4.7

4/17/2009 (dup) 4.1 3.9

1/13/2009 4.3 4.1

10/21/2008 3.7 3.6

7/16/2008 0.67 0.64

4/21/2008 3.5 3.4

1/11/2008 4.4 4.2

10/5/2007 3.6 3.5

10/5/07 (dup) 3.2 3.1

7/18/2007 4.2 4

7/18/07 (dup) 3.7 3.6

4/11/2007 4.1 3.9

1/11/2007 4.3 4.1

1/11/2007 (dup) 3.1 3

10/12/2006 4.8 4.6

7/13/2006 4.29 4.12

4/5/2006 5.18 4.98

1/11/2006 4.84 4.65

10/4/2005 5.84 5.61

10/4/05 (dup) 7.43 7.14

7/12/2005 4.84 4.65

4/26/2005 5.45 5.23

1/25/2005 4.02 3.86

11/11/2004 7.94

8/10/2004 7.04

5/27/2004 3.27

2/16/2004 4.59

12/3/2003 3.05

8/20/2003 4.77

5/14/2003 4.55

3/3/2003 4.64

10/15/2002 4.92

8/28/2002 3.99

5/22/2002 5

5/22/02 (dup) 4.66

3/30/2002 4.91

2/20/2002 3.65

1/27/2002 4.35

12/12/2001 4.94

7/20/2000 0.763

7/21/1999 0.263

2/3/10 Page 10 of 12 Table 5.12
Table 5.12

Dry Run Landfill APFO and PFOA in Groundwater

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO* (ug/L) PFOA** (ug/L)

Active Sampling Locations

MW-14 (DRMW-14) 10/21/2009 0.036 0.035

7/15/2009 0.041 0.039

4/17/09 0.029 0.028

1/13/2009 0.032 0.031

10/20/2008 0.03 0.029

7/15/2008 0.022 0.021

4/22/2008 0.026 0.025

1/11/2008 0.033 0.032

10/5/2007 0.032 0.031

7/18/2007 0.028 0.027

4/11/2007 0.029 0.028

1/11/2007 0.029 0.028

10/11/2006 0.035 0.034

7/13/2006 0.0426 0.0409

4/3/2006 0.0419 0.0402

1/11/2006 0.0285 0.0274

10/4/2005 0.0356 0.0342

7/11/2005 0.0262 0.0252

4/29/2005 NQ (<0.05) NQ (<0.05)

1/25/2005 NQ (<0.05) NQ (<0.05)

11/11/2004 NQ (<0.05)

8/10/2004 NQ (<0.05)

5/27/2004 NQ (<0.05)

2/16/2004 NQ (<0.05)

12/3/2003 NQ (<0.05)

8/20/2003 NQ (<0.05)

5/14/2003 NQ (<0.05)

3/3/2003 NQ (<0.05)

10/15/2002 NQ (<0.05)

8/28/2002 NQ

5/22/2002 NQ

3/30/2002 NQ

2/20/2002 NQ

1/27/2002 NQ

12/12/2001 NQ

7/20/2000 0.115

7/21/1999 2.5

6/16/1998 <0.1

7/21/1997 <0.1

4/10/1996 <0.1

Above A-Zone Wells

2/3/10 Page 11 of 12 Table 5.12
Table 5.12

Dry Run Landfill APFO in Groundwater

Quarterly MOU Status Report #17

DuPont Washington Works (OPPT-2004-0113)

Sample Date APFO (ug/L) PFOA ** (ug/L)

MW-6 (DRMW-6) 7/22/1997 1

4/10/1996 0.97

MW-21B (DRMW-21B) 8/21/2003 NQ (<0.05)

5/16/2003 NQ (<0.05)

2/28/2003 NQ (<0.05)

10/9/2002 NQ (<0.05)

ND = Not Detected at or above the limit of detection (LOD).

The listed LOD is approximate and varies by instrument and over time.

NQ = Not Quantifiable. Detected quantification (LOQ).

J = estimated value (below laboratory quantitation limit).

Note: Analytical method changed as of November 2001 (see Section 2.0 for details).

*APFO is also known as C-8 or FC-143

Yellow highlighted cells indicate data that has been corrected or added based on comparison with the electronic 

database.

** Both APFO and PFOA are reported starting with analysis performed after December 1, 2004.

*** No samples were collected for these wells because snow and ice

Historic Sampling Locations

C-Zone Wells

2/3/10 Page 12 of 12 Table 5.12