Document DDY06EyzNgeGvG7j472xm0Gp5
RECYCLED CO
AR226-2625
mm
AR226-2625
DuPont Engineering Barley Mill Plaza - Bldg. 27 4417 Lancaster Pike Wilmington, DE 19805
October 19,2004
Mr. Todd Kelleher Environmental Supervisor Chemical Monitoring Compliance Unit Ohio Environmental Protection Agency Columbus, Ohio 43216-1049
Earnhart HCiirllcslePvuilbleli,cOWhiaoter System
Dear Mr. Kelleher: On August 30,2004, groundwater from the Eamhart Hills Public Water System was sampled and perfluorooctanoic acid (PFOA) concentrations determined. Groundwater sampled included an after treatment sample, a duplicate after treatment sample, a before treatment sample, and four production well samples (W3 through W6). A ll PFOA results were non-detectable (ND; <0.01 ug/L). Please contact me at (302) 992-6820, if you have any questions. Sincerely,
Andrew S. Hartten Project Director cc: James Riley
Steve Williams Mary Dominiak Andrea V. Malinowski David W. Boothe Dennis W illiams Attachments
E.I. du Pont de Nemours and Company
Earnhart Hills Public Water System Circleville, Ohio
Sam olo Name
CVL-EHWC-AT CVL-EHWC-AT (DUP)
CVL-EHWC-BT CVL-EHWC-W3 CVL-EHWC-W4 CVL-EHWC-W5 CVL-EHWC-W6
W ater Source After Treatment After Treatment Before Treatment Production Weil Production Well Production Well Production Well
Date 8/30/2004 8/30/2004 8/30/2004 8/30/2004 8/30/2004 8/30/2004 8/30/2004
PFOA (ug/L)
ND (<0.01 ) ND (<0.01 ) ND (<0.01 ) ND (<0.01 ) ND (<0.01 ) ND (<0.01 ) ND (<0.01 )
10/19/2004
Page 1 of 1
Circleville.xls
E)gen RESEARCH
^ P Pr ereccisisee Research. Proven Results.
Flprochemicl Characterization of Water Samples Analytical Results
DuPont
,
Sample Identification
CVL-EHWC-AT \
Exygen Research Sample identification
L0003262-1
Collection Date
30-Aug-04
APFO * (pg/L**)
ND
* APFO - ammonium pbrfluorooctanoate (also referred to as FC-143 and C8)
** pg/L - micrograms/liter' (parts per billion)
DEFINITIONS:
Limit of Detection (LOD) for the procedure is approximately 0.010 pg/L
Limit of Quantitation (LOQ) for the procedure is 0.050 pg/L
ND - Compound not detected
,
NQ - Compound detected at a level betyveen the LOD and LOQ. Result is not
quantifiable.
\
Relative values: ND < LOD < NQ < LOQ \
RESULTS ARE CALCULATED ACCORDING TO THE FOLLOWING CRITERIA:
All samples were analyzed in duplicate. If the sarhple and laboratory duplicate are greater than 0.250 pg/L, and the relative percent difference (RPD) is less than 20, the average value is reported. If the RPD is greater than ,20, the higher value is reported.
If the sample and laboratory duplicate are less than 0.2.50 pg/L, and the absolute
difference is less than 50, the average value is reported:-. If the absolute difference is
greater than 50, the higher value is reported.
\
SUBMITTED BY: ><iohn M. Flaherty, Operations Manager
18-Qct-04 Date \
J&3030558 Research Drive m s` tSatatte College, PA 16801, USA
VT: 800.281.3219 F: 8 1 4.272.1019 exygen.com
en RESEARCH
Precise Research. \ Proven Results.
Flprochemical Characterization of Water Samples Analytical Results
DuPont
\
Sample Identification
CVL-EITWC-BT \
Exygen Research Sample Identification
L0003262-2
Collection Date
30-Aug-04
APFO* (pg/L**)
ND
* APFO - ammonium pferfluorooctanoate (also referred to as FC-143 and C8)
** pg/L - micrograms/liter (parts per billion)
DEFINITIONS:
Limit of Detection (LOD) for the procedure is approximately 0.010 pg/L
Limit of Quantitation (LOQ) for the procedure is 0.050 pg/L
ND - Compound not detected
,
NQ - Compound detected at a level between the LOD and LOQ. Result is not
quantifiable.
\
Relative values: ND < LOD < NQ < LOQ .
RESULTS ARE CALCULATED ACCORDING TO THE FOLLOWING CRITERIA:
All samples were analyzed in duplicate. If the sample and laboratory duplicate are greater than 0.250 pg/L, and the relative percent difference (RPD) is less than 20, the average value is reported. If the RPD is greater thark20, the higher value is reported.
If the sample and laboratory duplicate are less than 0.250 pg/L, and the absolute
difference is less than 50, the average value is reported,, If the absolute difference is
greater than 50, the higher value is reported.
,
RES EARC H
Precise Research. \ Proven Results.
Flprochemical Characterization of Water Samples Analytical Results
DuPont
,
Sample Identification
C V L-EH W C -A T-D U P
Exygen Research Sample Identification
L0003262-3
Collection Date
30-Aug-04
APFO* (pg/L**)
ND
* APFO - ammonium perfluorooctanoate (also referred to as FC-143 and C8)
** pg/L - micrograms/liter'(parts per billion)
'
DEFINITIONS:
Limit of Detection (LOD) for the procedure is approximately 0.010 pg/L
Limit of Quantitation (LOQ) for the procedure is 0.050 pg/L
ND - Compound not detected
\
NQ - Compound detected at a level between the LOD and LOQ. Result is not
quantifiable.
\
Relative values: ND < LOD < NQ < LOQ \
RESULTS ARE CALCULATED ACCORDING TO THE FOLLOWING CRITERIA:
All samples were analyzed in duplicate. If the sample and laboratory duplicate are greater than 0.250 pg/L, and the relative percent difference (RPD) is less than 20, the average value is reported. If the RPD is greater thaii-,20, the higher value is reported.
If the sample and laboratory duplicate are less than 0.2.50 pg/L, and the absolute
difference is less than 50, the average value is reported. If the absolute difference is
greater than 50, the higher value is reported.
\
SUBMITTED BY:
18-Qct-04 Date \
J k 3 03505E8 Research Drive
mSStataite College, PA 16801, USA
VT: 800.281.3219 F: 8 1 4 .2 7 2 .1 0 1 9 exygen.com
Flprochemical Characterization of Water Samples Analytical Results
DuPont
,
Sample Identification
CVL-EHWC-W3 \
Exygen Research Sample Identification
L0003262-4
Collection Date
30-Aug-04
APFO* (pg/L**)
ND
* APFO - ammonium perfluorooctanoate (also referred to as FC-143 and C8)
** pg/L - micrograms/iiter'(parts per billion)
DEFINITIONS:
Limit of Detection (LOD) for the procedure is approximately 0.010 pg/L
Limit of Quantitation (LOQ) for the'procedure is 0.050 pg/L
ND - Compound not detected
\
NQ - Compound detected at a level between the LOD and LOQ. Result is not
quantifiable.
\
Relative values: ND < LOD < NQ < LOQ ,
RESULTS ARE CALCULATED ACCORDING TO THE FOLLOWING CRITERIA:
All samples were analyzed in duplicate. If the sarhple and laboratory duplicate are greater than 0.250 pg/L, and the relative percent difference (RPD) is less than 20, the average value is reported. If the RPD is greater thari-,20, the higher value is reported.
If the sample and laboratory duplicate are less than 0.250 pg/L, and the absolute
difference is less than 50, the average value is reported:. If the absolute difference is
greater than 50, the higher value is reported.
\
SUBMITTED BY:
18-Qct-04 Date \
> rm staiJ^303055f8 Research Drive State College, PA 1 6 8 01 , USA VT: 800.281.3219 F: 8 1 4 .2 7 2 .1 0 1 9 exygen.com
en RESEARCH
.Precise Research. \ Proven Results.
Fltiprochemlcal Characterization of Water Samples Analytical Results
DuPont
\
Sample Identification
CVL-EHWC-W4 \
Exygen Research Sample Identification
L0003262-5
Collection Date
30-Aug-04
APFO* (pg/L**)
ND
* APFO - ammonium p'erfluorooctanoate (also referred to as FC-143 and C8)
** pg/L - micrograms/liter (parts per billion)
DEFINITIONS:
Limit of Detection (LOD) for the procedure is approximately 0.010 pg/L
Limit of Quantitation (LOQ) for the procedure is 0.050 pg/L
ND - Compound not detected
,
NQ - Compound detected at a level between the LOD and LOQ. Result is not
quantifiable.
\
Relative values: ND < LOD < NQ < LOQ .
RESULTS ARE CALCULATED ACCORDING JO THE FOLLOWING CRITERIA:
All samples were analyzed in duplicate. If the sample and laboratory duplicate are greater than 0.250 pg/L, and the relative percent difference (RPD) is less than 20, the average value is reported. If the RPD is greater thari,20, the higher value is reported.
If the sample and laboratory duplicate are less than 0.250 pg/L, and the absolute
difference is less than 50, the average value is reported. If the absolute difference is
greater than 50, the higher value is reported.
\
SUBMITTED BY: / J o h n M. Flaherty, Operations Manager
18-Oct-04 Date \
3 058 Research Drive State College, PA 1 6801, USA
T : 8 0 0 .2 8 1 .3 2 1 9 F: 814.2 7 2 .1 0 1 9 exygen.com
EWgenI R E S E A R C H 'i ^ .P re c is e Research. J \ Proven Results.
Flprochemical Characterization of Water Samples Analytical Results
DuPont
\
Sample Identification
CVL-EHWC-W5 \
Exygen Research Sample Identification
L0003262-6
Collection Date
30-Aug-04
APFO* (pg/L**)
ND
* APFO - ammonium p'erfluorooctanoate (also referred to as FC-143 and C8)
** pg/L - micrograms/liter (parts per billion)
DEFINITIONS:
Limit of Detection (LOD) for the procedure is approximately 0.010 pg/L
Limit of Quantitation (LOQ) for the'procedure is 0.050 pg/L
ND - Compound not detected
\
NQ - Compound detected at a level between the LOD and LOQ. Result is not
quantifiable.
\
Relative values: ND < LOD < NQ < LOQ .
RESULTS ARE CALCULATED ACCORDING TO THE FOLLOWING CRITERIA:
All samples were analyzed in duplicate. If the sarhple and laboratory duplicate are greater than 0.250 pg/L, and the relative percent difference (RPD) is less than 20, the average value is reported. If the RPD is greater thart-,20, the higher value is reported.
If the. sample and laboratory duplicate are less than 0.250 pg/L, and the absolute
difference is less than 50, the average value is reported. If the absolute difference is
greater than 50, the higher value is reported.
\
SUBMITTED BY:
Florochemical Characterization of Water Samples Analytical Results
DuPont
\
Sample Identification
CVL-EHWC-W6 \
Exygen Research Sample Identification
L0003262-7
Collection Date
30-Aug-04
APFO* (pg/L**)
ND
* APFO - ammonium p'erfluorooctanoate (also referred to as FC-143 and C8)
** pg/L - micrograms/liter (parts per billion)
DEFINITIONS:
\
Limit of Detection (LOD) for the procedure is approximately 0.010 pg/L
Limit of Quantitation (LOQ) for the'procedure is 0.050 pg/L
ND - Compound not detected
\
NQ - Compound detected at a level between the LOD and LOQ. Result is not
quantifiable.
\
Relative values: ND < LOD < NQ < LOQ \
RESULTS ARE CALCULATED ACCORDING TO THE FOLLOWING CRITERIA:
All samples were analyzed in duplicate. If the sample and laboratory duplicate are greater than 0.250 pg/L, and the relative percent difference (RPD) is less than 20, the average value is reported. If the RPD is greater thart-,20, the higher value is reported.
If the sample and laboratory duplicate are less than 0.250 pg/L, and the absolute
difference is less than 50, the average value is reported. If the absolute difference is
greater than 50, the higher value is reported.
\
SUBMITTED BY: ^<Tohn M. Flaherty, Operations Manager
18-Oct-04 Date \
J ^3 03055f8 Research Drive
> r m s tSataite College, PA 1 6801, USA
VT : 800.281.3219 F: 8 1 4 .2 7 2 .1 0 1 9 exygen.com
