Document g2gKyMr2n1mk1z6w3MXn4N9oq
January 8, 2009
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 20460
p. 1
8~hAp-aov-i72z9 4ZZfo'" 3976 DuPont Haskell Global Centers
for Health and Environmental Sciences 1090 Elkton Road, P .O . Box 50 Newark, DE 19714-0050
Dear 8(e) Coordinator :
Re: 8EHQ-08-17229 Supplement Perfluorooctanoate Anion (PFOA) - Updated Occupational Serum Sample Results Changshu Facility, China
CORRECTION to Letter Dated Januarv 2. 2009
This letter is a correction to the Attachment for the above-identified January 2, 2009 letter. Specifically, the corrections to the Attachment are as follows :
r Attachment page 1 - correction to the Number of Samples, Average, Median, and Standard Deviation
a Attachment page 2 (Group 1) - correction to the 2"d and 4'" columns in the Table beginning
with Number of Samples
'
Attachment page 5 (Group 4) - correction to the Maximum in the May 2007 Results column
The entire Attachment, as corrected, is included with this letter . inconvenience caused by this correction .
We apologize for any
Sincerely,
(':;1 .._
A. Michael Kaplan, Ph.D.
Director - Regulatory Affairs
AMK/BJD/JLC : clp
(302) 366-5260
.
Attachment (6 pages)
~~~~i~
Worker ' Number'
1 2 3 4
5 6 7 8 9
10 11 12 13 14
15 16 17
18 19 20 21 22
23 24 25
26 27
28 29 30
Nov 2'0Qe
Results'" (1?pb) '
838 39 303 157 646 656 577 260 568 843 770 510 271 526 1,333 35 589 34 640 488 494 174 58 15 24
939
1262 2240 3,617 4,902
31
3,495
32
5,507
33
2,150
34
4,051
35
5,097
36
3,253
37
4,774
38
5,157
39
5,552
40
3,134
41
6,704
42
4,097
43
1,093
44
3,379
45
5,460
p. 2
DuPont Company Changshu Works, China
Serum PFOA Results
November 2008
Worker
Number 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70
71 72 73 74 75
76 77 78 79 80 81 82 83 84 85 86 87 88 89 90
Nov 2008
Results
' (ppb) 3,709 7,904 4,140 2,710 3,799
1,604 4,549 3,509
1,671 3,150 4,410 1,997 5,735
2,580 2,123 5,434 2,859
2,125 2,678 3,928 2,783
278 55 85 183
143
89 143 8,330 544
298 1,990 1,141
546
4,916 2,230
724 848
1,667 2,606 2,694
1,952 2,303
2,394, ' 2,146
Worker
Number 91
92 93 _ 94
95 96 97 98
99 100 101 102
103 104 105 106
107 108 109 110
111 112 113 114
'Nov' 2(?d8-
Results
(pp,,b)
3,155 1,757 2,349
61 172
32
97 45 27 14 118
276 23 119
55 33 41 39
19 249 133
58 54
15
Number of Samples Average Median Minimum
Maximum
Standard Deviation
114 1819 893
14 8330
1959
Samples analyzed by Shanghai Institute Materia Medica, Pudong, Shanghai, China Barbara J . Dawson, CIH, CSP
Results rounded to nearest whole number
corrected 01 .05.09
p. 3
DuPont Company Changshu Works, China Serum PFOA Results - Group 1 May 2007 - November 2008
Worker
Number
1 2
3 4 5 6 7
8 9 10 11
12 13 14 15
16 17
18 19
20 21
22 23 24
25
26
_
27
28
May 2007 Results
(ppb)
13 27 23 50 22 33 17 21 7 158 22
61 172
12
15
Nov 2007 Results
(ppb) 15 45
230 220
93
127 310 146 122
254 422 742
May 2008 Results
(pPb)
40
501 604 211
371 225 432 384 832
462
541 301 243
Nov 2008 Results
(ppb) '
838 39 303 157 646 656 577 260 568 843 770 510 271 526 1,333 35 589 34 640 488 494 174 58 15 24 939 1,262 2,240
Number of Samples
Average Median Minimum Maximum Standard Deviation
15
12
13
44
227
396
22
183
384
7
15
40
172
742
832
51
199
203
Results prior to Nov 2008 previously reported
28 546 518
15 2240
491
Samples analyzed by Shanghai Institute Materia Medica, Pudong, Shanghai, China Barbara J . Dawson, CIH, CSP
Results rounded to nearest whole number
corrected 01 .05 .09
p. 4 DuPont Company
Changshu Works, China
Serum PFOA Results - Group 2 May 2007 - November 2008
May 2007
Nov 2007
May 2008
Nov 2008
Worker
Results
Results
Results
Results
Number
(PAb)
(PPb)
(pPh)
(PPb)
29
50
482
3,350
3,617
30
1,050
31
18
1,520
3,700
4,902 3,495
32
45
883
4,950
5,507
33
23
380
1,760
2,150
34
21
716
4,470
4,051
35
16
896
4,220
5,097
36
32
480
3,160
3,253
37
11
658
4,350
4,774
38
234
5,000
5,157
39
15
1,260
4,950
5,552
40
30
452
3,190
3,134
41
29
1,980
6,180
6,704
42
38
486
3,620
4,097
43
11
1,180
1,093
44
45
508
3,030
3,379
45
18
824
5,460
46
45
478
2,980
3,709
47
20
1,130
6,700
7,904
48
10
900
3,970
4,140
49
2,710
50
12
416
3,430
3,799
51
10
380
1,830
1,604
52
7
944
3,890
4,549
53
3,509
54
1,640
1,671
55
16
630
3,150
56
202
4,410
57
161
2,220
1,997
58
250
4,650
5,735
59
172
2,580
60
232
1,840
2,123
61
294
4,350
5,434
62
107
2,850
2,859
63
336
1,950
2,125
64
2,180
2,678
65
3,820
3,928
66
2,783
67
278
68
55
69
85
70
183
71
143
72
89
73
143
74
8,330
Number of Samples Average Median Minimum Maximum Standard Deviation
24 75 21 7 1050 21 2
29
626 482 107 1980 43 5
30 3514 3525 1180 6700 135 2
46 3351 3437
55 8330 2044~
Results prior to Nov 2008 previously reported
Samples analyzed by Shanghai Institute of Materia Medical, Pudong, Shanghai, Chiri&arbara J . Dawson, CIH, CSP Results rounded to nearest whole number
p. 5
DuPont Company Changshu Works, China Serum PFOA - Group 3 May 2007 - November 2008
Worker
Number 75 76 77 78 79 80 81 82 83
May 2007 Results
(ppb)
12 51 42 28 14 10
Nov 2007 Results
(ppb)
1,020
May 2008 Results
(ppb) 583 292
503 4,160 2,340
734
Nov 2008 Results
(Ppb)
544 298 1,990 _ 1,141 546 4,916 2,230 724 848
Number of Samples Average Median Minimum Maximum Standard Deviation
6
1
26
1020
21
1020
10
1020
51
1020
17
Results prior to Nov 2008 previously reported
6 1435
659 292 4160 1526
9 1471 848 298
4916 1452
Samples analyzed by Shanghai Institute Materia Medica, Pudong, Shanghai, China Barbara J . Dawson, CIH, CSP Results rounded to nearest whole number
p. 6
DuPont Company Changshu Works, China Serum PFOA Results - Group 4 May 2007 - November 2008
Worker Number ;
May 2007 Results
(ppb)'
84
54
85
13
86
10
87
12
88
19
89
16
90
48
91
22
92
93
94
95
Nov 2007 Results
(ppb) 216
414 392 324 398 496
82 124
May 2008 Results
(ppb)
1,720 2,390 2,270 2,070 2,510 2,340 2,460 2,890
3,000
Nov 2008
Results
(Ppb)
1,667 2,606 2,694 1,952 2,303 2,394 2,146 3,155 1,757 2,349
61 172
Number of Samples
Average Median Minimum Maximum Standard Deviation
8
8
24
306
18
358
10
82
54
496
17
149
Results prior to Nov 2008 previously reported
9 2406 2390
1720 3000
388
12 1938 2224
61 3155 944~
Samples analyzed by Shanghai Institute Materia Medica, Pudong, Shanghai, China Barbara J. Dawson, CIH, CSP
Results rounded to nearest whole number
corrected 01 .05 .09
p. 7
DuPont Company Changshu Works, China Serum PFOA Results - Group 5 May 2007 - November 2008
Worker
Number
96 97 98 99
100 101 102 103 104
105 106 107 108 109 110
111 112 113 114
May 2007 Results
(ppb)
11
8 21
24 8
Nov 2007 Results
(ppb) 17
39
18
9
May 20:08 Results
(ppb) 53
283
142
Nov 2008
Results
(ppb)
32 97 45 27 14 118 276 23
119 55 33 _ 41 39 19 249
133 58 54 15
Number of Samples
Average Median Minimum Maximum I Standard Deviation
5
4
3
19
14
21
159
76
11
17
142
45
8
9
53
14
24
39
283
276
7
13
116
75
Results prior to Nov 2008 previously reported
Samples analyzed by Shanghai Institute Materia Medica, Pudong, Shanghai, China Barbara J. Dawson, CIH, CSP Results rounded to nearest whole number