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October 12,2001
Mr.James C.Cox
lubeac Public sendee District P.o.Bfst7QD Washington, WV 26181
RE: LPSD Water Sample Anatytica! Results Dear Mr. Cox
Attached are copies of the analytkal results for water samples taken on August 14,2001 from three LPSD welts and the LPSD Buffett# 1 main water line. As reported in the quality control portion of the analytical
11H#FUA
SUfTti3ate
method spike and method spite d u p E
(MS/MSD) recovery are outside the quality control limits. To Improve the accuracy of the analysis for the
presence of ammoniumi pertluoreoctanoate (C-8) in water, DuPont has been assessing alternative
anaiybcai procedure DuPont has also been investigating new samping procedures to assure more
, J hrou?Jh 0lte assssmen* dnd investigation, DuPont has identified a now analytical ro^hod mat Should prote greater precision and accuracy for data that te generated. We have ako
revised the sampling protocol to improve the quality of data. DuPont intends to implement the revised sampling protocol and new analytical procedure for our collection and analysis of Mure samples from
Bared oh the "provedI seam a* of the new analytical procedure, our w rit to date suggests that the new method may yield resells that show concentrations of C-8 significantly above levels that have been most recently reported and above DuPont's community exposure guidelines CCEG*). Actual c o n c e n t i r S f
samples ulTeing the new protocol aid procedure cannot be estimated at this time. Exposures above the CEG. however, would be tiMy to result in considerably less exposure than occurs with employees who
healih effects attributable to 0 8 . The CEG InthcosrpeoWraOtre^s mr ultiple consehravvaetiv"<e*adsseummpotionn^sSanfda tdhevreefSoree
it should not be assumed that an exposure to C-8 at levels above She CEG is rwcessarily unsafTM
'
Ifyou have any questions or need additional Information, please contact me at 304-883*4271.
Sincerely,
R. L Ritchey Sr. Environmenla! Control Consultant Washington Works
RLR/gwidsw Attachments c c William J, Gibbs
Uibeck Public Service District P.O. BOX700 Washington, VW 26181
SOO'COtLia.
EXHIBIT
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Snbioitted : O B/1S/2001 0$25
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fiffeard* 10/20/2001
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Page 1of1
Account Humbert 07032
CRfl-E.l.DuPont de Wemours s co Barley Mill Plaza, Bldg. 27 Lancaster pike a Route 141 Wilmington Dfi 29806
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th e HS/MSD i s o u ts id e th e o c c r i t e r i a .
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surrogate recoveries are outside the cc limits.
gc/ss Coniisa t BC-MJ .
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Method PC"143 i>y CC/ECP 10/11 SC-143 by CC/HS
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Ull Data end tim * X 66/27/2091 16:45
1 09/16/2601 12*S7 1 66/22/3061 99166
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Aecouat Humbers 07032 OMi-S.I.DuPont de wemottre t Co Barley ill Plaza, Bldg. 27 Lancaster Pike s Route lei Wilmington DE 1980S
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Deborah W. Zimmerman 1
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