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uPont1 HI a' s1-k*-ek1ll l/*"G- l/l\korb> 1al C.-ie-ynI ters
for Health and Environmental Sciences
1090 Elkton Road, P.O, Box 50
Newark, DE 19714-0050
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December 16, 2008
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Via Federal Express
Document Processing Center (Mail Code 7407M) Room 6428 Attention: 8(e) Coordinator Office of Pollution Prevention and Toxics U.S. Environmental Protection Agency 1201 Constitution Ave., NW Washington, DC 20004
Dear 8(e) Coordinator:
Re: Perfluorooctanoic Acid (PFOA) Occupational Sampling Shimizu Facility, Japan
Please find attached occupational PFOA sampling results for workers at the above referenced DuPont site. The levels o f PFOA reported with this submission are generally corroborative o f previously reported levels in an occupational setting. This information is provided voluntarily to the TSCA 8(e) office in view o f the Agency's continued interest in perfluorinated substances and as a precautionary measure.
Sincerely,
(.X - r f l 1
A. Michael Kaplan, Ph.D. Director - Regulatory Affairs
AMK/AVM/BJD: dwd (302) 366-5260
Attachment (2 pages)
( JU jO d l
CONTAINS NO CBI
E l. du Pont de Nemours and Company
315 3
P-2
DuPont Company Shimizu Works, Japan Results of Blood Plasma Sampling for PFOA September 2008 Sampling
Worker
Result 2008
Number
(ppb)
1 3320
2 1010
3 3500
4 519
5 3905
6 8370
7 2490
8 87
9 5040
10 4960
11 1240
12 771
13 175
14 1600
15 232
16 3600
Average
2551
Median
20451
Minimum
87
Maximum
83701
Standard Deviation
2305;
n -- 16
Note:
Plasma samples analyzed by DuPont Haskell Global Centers for Health and Environmental Sciences results are rounded to nearest whole number
Page 2 of 3
DuPont Company Shimizu Works, Japan 2000 & 2008 PFOA Sample Results
W orker Number
1 2 3
Average Median
Minimum! Maximumi Standard Deviation!
n=
2000* Result
(PPb)
5700! 15001 30001 34001 30001 1500 5700 21281
3!
2008 ** Result
(PPb)
3320 1010 3500 2610 3320 1010 3500 1389
3
p.3
Notes:
* 2000 results reflect whole blood measurements analyzed by National Medical Services - results rounded to nearest whole number.
** 2008 results reflect plasma samples analyzed by DuPont Haskell Global Centers for Health and Environmental Sciences - results rounded to nearest whole number.
Page 3 of 3
