Document 33eY0m4N6qvd0nJLLz9r323O
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June 4, 200 8
DuPont Haskell Global Centers for Health and Environmental Sciences 1090 Elkton Road, P .O . Box 50 Newark, DE 19714-005 0
Via Federal Expres s
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) Updated Occupational Serum Sampling Chambers Works Facility, Deepwater, New Jersey 8EHQ-6-16446/8EHQ-06-1666 3
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Please find attached updated occupational PFOA serum sampling results for workers at the above referenced DuPont site for December 2007 . The levels of PFOA reported with this submission are generally corroborative of previously reported levels in an occupational setting . This information is provided to the TSCA 8(e) office in view of the Agency's continued interest in perfluorinated substances and as a precautionary measure .
Sincerely,
A . Michael Kaplan, Ph .D . Director - Regulatory Affairs
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AMK/AVMBJD : cl p (302) 366-5260
Attachment (11 pagIe I I !s I~)il l~!il I,'II ' I_ I'i il!'Iijl Ir jl il' il i
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p. 2
DuPont Company Chambers Works, Deepwater, NJ
Serum PFOA Result s
Sample Group Dec .2007 Sample Group Dec .2007 Sample Group Dec .2007
Number Number p b Number Number
(ppb)
Number Number p b
1
Group 1 52 37 Group 2 380 65 Group 4 105
2
Group 1 9 38 Group 2 645 66 Group 4 139
3
Group 1 13 39 Group 2 179 67 lGroup 4 148
4
Group 1 11 40 Group 2 186 68 Grou 4 95
5
Group 1 11 41 Group 2 245 69
Group 4 113
6
Group 1 4 42 Group 2 92 70 Group 4 77
7
Group 1 9 43 Group 2 76 71
Group 4 38
8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
G roup Group Group Group Group Group Group Group Group Group Group Group Group
G roup Group Group
1 12 44 Group 2 185 72
1 6 45 Group 2 154 73
1 4 46 1 9 47
Group 2 139 74 Group 2 40 75
1 46 48 Group 2 105 76
1 5 49 1 6 50
Group 2 73 77 Group 2 46 78
1 65 51 Group 2 471 79
1 8 52 1 7 53
Group 2 159 80 Group 2 161 81
1 3 54 Group 3 66 82
1 6 55 1 3 56 1 25 57 1 20 58
Group 3 50 83 Group 3 23 84 Group 3 17 85 Group 3 121 86
1 23 59 Group 3 20 87
Group 4 69 Group 4 69 Group 4 38 Group 4 44 Group 4 34 Group 4 36 Group 4 20 ]Group 4 24 Group 4 33 Group 4 38 Group 4 28 Group 4 18
Group 4 14 Group 4 8 Group 4 15 Group 4 13
24 25 26 27
28 29 30 31
32 33 34
Group 1 11 60 Group 3 24 88 ]Group 4 15
Group 1 17 61 Group 3 6 89 Group 4 105
Group 1 8 62 Group 3 2 90 Group 4 72
Group 1 14 63 Group 3 7 91 Group 4 45
Group 1 10 64 Group 3 7 92 Group 4 31
Group 1 10 93 Group 4 10
Group 1
5
94 Group 4 20
Group 1
7
95 Group 4 3
Group 1 44 96 Group 4 34
Group 1
8
97 Group 4 63
Group 1
3
35 Grou 1 24
36 IGroup 1 12
Number of
Samples 97
Average
60
Median 2 4
Minimum
Maximum 64 5 Standard
Deviation 9 6
2
~
Samples analyzed by Axys Analytical Ltd ., Sidney, British Columbia, Canad a Results rounded to nearest whole number Barbara J . Dawson, CIH, CSP
DuPont Company p . 3 Chambers Works, Deepwater, N J Group 1- Serum PFOA Results - Comparison over Tim e
Sample 1998 2000 2002 2004 2005 2006 Dec .2007
Number p b p b p b p b
(ppb) (ppb)
pb
1
36
52
2
15
9
3
13
4
11
5
11
6
14
4
7
9
9
8
12
9
6
10
7
4
11
10
9
12
46
13
11
6
5
14
15
9
6
15
<LLQ
15
65
16
14
8
8
17
7
7
18
4
3
3
19
6
20
3
21
53
57
32
25
22 <LLQ <LLQ 56 31 20
23
<LLQ
24
23
24
15
11
25 <LLQ <LLQ <LLQ 15 17
26
8
8
8
27
14
28
12
11
10
29
12
8
10
30
5
4
5
31
7
32
45
44
33
8
8
34
3
35
24
36
6
12
Number of
Samples Average Median Minimum Maximum Standard Deviation
2 2 5 8 2 23 36 <LLQ <LLQ 55 15 13 15 15 <LLQ <LLQ 55 10 13 10 10 <LLQ <LLQ <LLQ 4 11 3 3 <LLQ <LLQ 56 57 15 45 65
2 17 11 15
results prior to 2007 previously submitted to EP A
2007 samples analyzed by Axys Analytical Ltd ., Sidney, British Columbia, Canad a Results rounded to nearest whole number Barbara J . Dawson, CIH, CSP
p. 4
DuPont Compan y Chambers Works, Deepwater, N J Group 2 - Serum PFOA Results - Comparison over Tim e
Sample 1998 2000 2002 2004 2005 2006 Dec .2007
Number p b
(ppb) (ppb)
p b
(ppb) (ppb) (ppb)
37
720
748
380
38 39
611 355
645 179
40
300
251
186
41
185
190
245
42
181
181
92
43
13
76
44
224
355
185
45
318
154
46
249
139
47
<LLQ
40
40
48 49
158 86
168 109
105 73
50
44
46
46
51 <LLQ 1130
1200 861 471
52 <LLQ 347
412 306 159
53 <LLQ <LLQ
297 441 256 161
Number o f
Samples
Average Median Minimum
Maximum Standard
1 4 <LLQ <LLQ
<LLQ <LLQ <LLQ <LLQ <LLQ <LLQ
3 11 1 16 17 591 344 181 315 196 347 224 181 254 159 297 13 181 40 40
1130 1200 181 861 645
Deviation 467
351, 236, 161,
results prior to 2007 previously submitted to EP A
2007 samples analyzed by Axys Analytical, Ltd . Sidney, British Columbia, Canad a Results rounded to nearest whole number Barbara J . Dawson, CIH, CSP
p. 5
DuPont Company Chambers Works, Deepwater, N J Group 3 - Serum PFOA Results - Comparison over Time
Spring Fall Spring
Sample 2002 2004 2004 2006 2007 Dec .2007
Number p b p b
(ppb) (ppb) (ppb) (ppb )
54
111
81
66
55
50
56
14
23
57
17
58 59
313 252 121 684 31 27 20
60
18
61
62
24 6 2
63 64
7 7
Number o f
Samples Average Median Minimum Maximum Standard Deviation
1 2 1 4 1 11 313 398 31 95 14 31 313 398 31 54 14 22 313 111 31 18 14 2 313 684 31 252 14 121
405 109 37
results prior to Dec . 2007 previously submitted to EP A
2007 samples analyzed by Axys Analytical, Ltd . Sidney, British Columbia, Canad a Results rounded to nearest whole number Barbara J . Dawson, CIH, CSP
p. 6
DuPont Compan y Chambers Works, Deepwater, NJ Group 4 - Serum PFOA Results - Comparison over Time
Spring
Sample 2000 2002 2004 2006 2007 Dec .2007
Number (ppb) (ppb) (ppb) (ppb) (ppb)
pb
65
211
105
66
242
174
139
67
140
148
68
137
95
69
143
127
113
70 71
134
112
<LLQ
83
77 38
72
49
74
69
73
66
69
74
48
62
38
75
58
44
76
<LLQ
41
34
77
<LLQ
39
36
78
32
20
79
31
24
80
31
33
81
25
38
82
22
28
83
17
17
18
84
15
14
85
13
8
86
11
15
87
16
11
13
88
9
15
89 137 163 99 105
90
72
91
92
60
45
46
31
93
10
94
22
20
95
3
96 97
34 63
Number o f Samples Average Median Minimum Maximum
Standard Deviation
1 5 8 25 1 33 <LLQ 146 77 63 99 49 <LLQ 137 49 39 99 36 <LLQ <LLQ 16 9 99 3 <LLQ 242 163 211 99 148
91 60 57 40
results prior to Dec 2007 previously submitted to EP A
2007 samples analyzed by Axys Analytical Ltd ., Sidney, British Columbia, Canad a Results rounded to nearest whole number Barbara J . Dawson, CIH, CSP
p. 7
DuPont Compan y Performance Elastomers, Chambers Works, Deepwater, NJ
2007 Serum PFOA Result s
Sample 2007 Result Number Group Tested (ppb )
1 Group 1 271
2 Group 1 4
3 Group 1 185
4 Group 1 303
5 Group 1 6
6 Group 1 22
7 Group 1 36
8 Group 1 358
9 Group 1 55
10 Group 1 16
11 Group 1 78
12 Group 1 25
13 Group 1 1230
14 Group 1 668
15 Group 1 21
16 Group 1 16
17 Group 2 1610
18 Group 2 624
19 Group 2 1600
20 Group 2 1215
21 Group 2 1585
22 Group 2 399
23 Group 2 1570
24 Group 2 1970 Number of Samples 46
25 Group 3 522 Average 868
26 Group 3 281 Median 292
27 Group 3 236 Minimum 4
28 Group 3 46 Maximum 4400
29 Group 3 77 Standard 30 Group 3 18 7 31 Group 3 55
Deviation
1134
32 Group 4 305
33 Group 4 2990
34 Group 4 3220
35 Group 4 4090
36 Group 4 143
37 Group 4 1990
38 Group 4 162
39 Group 4 4400 40 Group 5 1440
41 Group 5 1850
42 Group 5 100
43 Group 5 192
44 Group 5 2870
45 Group 5 633
46 Group 5 27 5
Samples analyzed by Axys Analytical, Ltd ., Sidney, British Columbia, Canad a Results rounded to nearest whole number Barbara J . Dawson, CIH, CSP
p. 8
DuPont Company Performance Elastomers, Chambers Works, Deepwater, NJ
Group 1 - Serum PFOA Results - Comparison over Time
Sample 2004* Result 2006* Result 2007 Result
Number
(ppb) (ppb) (ppb)
1
271
2
4
3 580 444 185
4 615 303
5
6
6
16
22
7
64
36
8
358
9
55
10 11
16 78
12
25
13
1230
14 15
668 21
16
16
Numbe r of Samples 1 4 16
Average 580 285 206 Median 580 254 46 Minimum 580 16 4
Maximum 580 615 1230 Standard Deviation 2 9 2 329
3ults previously submitted to EP A
2007 samples analyzed by Axys Analytical, Sidney, British Columbia, Canad a Results rounded to nearest whole number Barbara J . Dawson, CIH, CSP
p. 9 DuPont Compan y Performance Elastomers, Chambers Works, Deepwater, NJ Group 2 - 2007 Serum PFOA Results
Sample 2007 Result Number (ppb)
17 1610 18 624 19 1600 20 1215 21 1585 22 399 23 1570 24 1970 Number of Samples 8 Average 1322 Median 1578 Minimum 399 Maximum 1970 Standard Deviation 543
Samples analyzed by Axys Analytical, Sidney, British Columbia, Canada Results rounded to nearest whole numbe r 2007 was the first time this group participated in the monitoring Barbara J . Dawson, CIH, CSP
DuPont Company Performance Elastomers, Chambers Works, Deepwater, NJ
Group 3 - Serum PFOA Results - Comparison over Time
P . 10
Sample Number
2006* Result 2007 Resul t ( ppb) (ppb)
25 522
26 458 281
27 236
28
46
29
77
30 187
31
55
Number of Samples 1 7
Average 458 201 Median 458 187
Minimum 458 46 Maximum 458 522 Standard Deviation 169
*2006 result previously submitted to EPA
2007 samples analyzed by Axys Analytical, Sidney, British Columbia, Canad a Results rounded ot nearest whole number Barbara J . Dawson, CIH, CSP
DuPont Company Performance Elastomers, Chambers Works, Deepwater, NJ
Group 4 - Serum PFOA Results - Comparison over Time
P . 11
Sample 2006* Result 2007 Resul t
Number
(ppb) (ppb)
32 305
33 2990
34 1640 3220
35 1700 4090
36 143
37 1990
38 162
39 4400
Number of Samples 2 8
Average 1670 2163 Median 1670 2490 Minimum 1640 143
Maximum 1700 4400 Standard Deviation 42 1776
*2006 results previously submitted to EP A
2007 samples analyzed by Axys Analytical Ltd ., Sidney, British Columbia, Canad a Results rounded to nearest whole number Barbara J . Dawson, CIH, CSP
DuPont Compan y Performance Elastomers, Chambers Works, Deepwater, NJ
Group 5 - Serum PFOA Results - Comparison over Time
p . 12
Sample 2004* Result 2006* Result 2007 Resul t Number (ppb) (ppb) (ppb)
40 1280 2990 1440
41 4380 1850
42 167 100
43
192
44
2870
45
633
46 316 275
Numbe r of Samples 1 4 7 Average 1280 1963 1051
Median 1280 1653 633 Minimum 1280 167 100 Maximum 1280 4380 2870 Standard Deviation 2068 1042
*2004 and 2006 results previously submitted to EPA
2007 samples analyzed by Axys Analytical, Ltd ., Sidney, British Columbia, Canad a Results rounded to nearest whole number Barbara J . Dawson, CIH, CSP
