Document 1Q0xxr53bKXB149VnK9oN8ww5
June 25,2009 Via Federal Express
DuPont Haskell Global Centers for Health and Environmental Sciences 1090 Elkton Road, P.O. Box 50 Newark, DE 19714-0050
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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: Perfluorohexanoate Anion (PFHxA) - CAS # 307-24-4 Occupational Serum Sample Results Chambers Works Facility, Deepwater, New Jersey
8EHQ-0609-17558A
This letter is to inform you of the results of serum sampling for PFHxA from the above referenced DuPont site for 2009. This information is provided to the TSCA 8(e) office in view of the Agency's continued interest in perfluorinated substances and as precautionary measure.
Sincerely,
. A. Michael Kaplan, Ph.D. Director - Regulatory Affairs
AMK/JLC: clp (302) 366-5260
Attachment (1 page)
88090000282 88090000282
DCN:88090000282
Contains No CM
CONTAINS NO C8I
DuPont Company Chambers Works, Deepwater, NJ Serum Perfluorohexanoate Anion (PFHxA) Results
*
Results for
Samples Collected
ID Number
Exposure Group
March 2009
80070
P
0.5
80172
P
ND*
80301
P
1
80397
P
0.6
80148
P
0.7
80138
P
0.5
80161
P
<0.5**
80349
P
0.7
. 1*'
Number o f Samples
8
Average (ppb)
0.54
Median (ppb)
0.55
Max (ppb)
1
Min (ppb)
ND*
Std Dev (ppb)
0.28
P =Production Group
Results are expressed in parts per billion (ppb).
* ND=Not Detected; a value o f 0.1 ppb was used fo r
statistical analysis, 0.1 ppb is equal to 1/2 o f the LOD
** <0.5 is detected but less than the limit o f quantitation;
a value o f 0.25 ppb was used fo r statistical analysis
0,25 ppb is equal to 1/2 o f LOQ
Samples Analyzed by Axys Laboratory Sydney, British Columbia, Canada Limit of Detection = 0.2 ppb Limit of Quantification = 0.5 ppb
June 9, 2009
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