Document zZr0Km7KnN4dqpzymQrpp07m

2 8^ & ~ iy P-1 (nfL& 3IZ/0l June 4,2008 fND1o0eur9wPH0aoernEaktll,ktHhtDoaaEnsnkRd1el9olEa7Gnd1v,4loi-Prb0o.a0Onl5m.0CBeenontxtael5r0sSciences 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: PC8UEehprHadfmlaQutboe-6dre-or1Oso6cWc4tca4uon6pr/ok8aiEsctiHoFAnaQcacid-lil0Si(6tePy-r1,Fu6DOm6eA6eS3)pawmaptelirn,gNew Jersey 73J 1 , ' *"* - 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 AMK/AVM/BJD: cip (302) 366-5260 Attachment ( 11 pages) 89080000217 1b 4 4 b CONTAINS NO C S DuPont Company Chambers Works, Deepwater, NJ Serum PFOA Results P-2 S am p le 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 31 32 33 34 35 36 Group Number Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Dec. 2007 (PPb) 52 9 13 11 11 4 9 12 6 4 9 46 5 6 65 8 7 3 6 3 25 20 23 11 17 8 14 10 10 5 7 44 8 3 24 12 S am p le Number 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 Group Number Group 2 Group 2 Group 2 Group 2 Group 2 Group 2 Group 2 Group 2 Group 2 Group 2 Group 2 Group 2 Group 2 Group 2 Group 2 Group 2 Group 2 Group 3 Group 3 Group 3 Group 3 Group 3 Group 3 Group 3 Group 3 Group 3 Group 3 Group 3 Dec. 2007 (PPb) 380 645 179 186 245 92 76 185 154 139 40 105 73 46 471 159 161 66 50 23 17 121 20 24 6 2 7 7 S am p le Number 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 91 92 93 94 95 96 97 Group Number Group 4 Group 4 Group 4 Group 4 Group 4 Group 4 Group 4 Group 4 Group 4 Group 4 Group 4 Group 4 Group 4 Group 4 Group 4 Group 4 Group 4 Group 4 Group 4 Group 4 Group 4 Group 4 Group 4 Group 4 Group 4 Group 4 Group 4 Group 4 Group 4 Group 4 Group 4 Group 4 Group 4 Dec. 2007 (PPb) 105 139 148 95 113 77 38 69 69 38 44 34 36 20 24 33 38 28 18 14 8 15 13 15 105 72 45 31 10 20 3 34 63 Number of Samples Average Median Minimum Maximum Standard Deviation 97 60 24 2 645 96 Samples analyzed by Axys Analytical Ltd., Sidney, British Columbia, Canada Results rounded to nearest whole number Barbara J. Dawson, CIH, CSP DuPont Company Chambers Works, Deepwater, NJ Group 1 - Serum PFOA Results - Comparison over Time p.3 S am p le 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 31 32 33 34 35 36 1998 (ppb) <LLQ <LLQ 2000 (ppb) <LLQ <LLQ 2002 (ppb) <LLQ 53 56 <LLQ <LLQ 2004 (ppb) 14 4 57 8 12 12 5 6 Number of Samples Average Median M in im um Maximum Standard Deviation 2 <LLQ <LLQ <LLQ <LLQ 2 <LLQ <LLQ <LLQ <LLQ 5 55 55 <LLQ 56 2 8 15 10 4 57 17 results prior to 2007 previously submitted to EPA 2005 (ppb) 11 15 2 13 13 11 15 2006 (ppb) 36 15 14 9 7 10 6 9 15 8 7 3 32 31 24 15 15 8 11 8 4 45 8 Dec. 2007 (ppb) 52 9 13 11 11 4 9 12 6 4 9 46 5 6 65 8 7 3 6 3 25 20 23 11 17 8 14 10 10 5 7 44 8 3 24 12 23 36 15 15 10 10 33 45 65 11 15 2007 samples analyzed by Axys Analytical Ltd., Sidney, British Columbia, Canada Results rounded to nearest whole number Barbara J. Dawson, CIH, CSP DuPont Company Chambers Works, Deepwater, NJ Group 2 - Serum PFOA Results - Comparison over Time P-4 S am p le Number 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 1998 (PPb) <LLQ 2000 (PPb) <LLQ <LLQ <LLQ <LLQ 2002 (PPb) 1130 347 297 2004 (PPb) 720 300 185 13 224 158 86 44 1200 412 441 2005 (PPb) 181 2006 (PPb) 748 611 355 251 190 181 355 318 249 40 168 109 46 861 306 256 Dec. 2007 (ppb) 380 645 179 186 245 92 76 185 154 139 40 105 73 46 471 159 161 Number of S am p les Average M e d ia n M in im u m M axim u m Standard Deviation 1 <LLQ <LLQ <LLQ <LLQ 4 <LLQ <LLQ <LLQ <LLQ 3 591 347 297 1130 467 11 344 224 13 1200 351 results prior to 2007 previously submitted to EPA 1 16 181 315 181 254 181 40 181 861 236 17 196 159 40 645 161 2007 samples analyzed by Axys Analytical, Ltd. Sidney, British Columbia, Canada Results rounded to nearest whole number Barbara J. Dawson, CIH, CSP DuPont Company Chambers Works, Deepwater, NJ Group 3 - Serum PFOA Results - Comparison over Time P-5 Sample Number 54 55 56 57 58 59 60 61 62 63 64 2002 (ppb) Spring 2004 (ppb) 111 Fall 2004 (ppb) 313 684 31 2006 (PPb) 81 252 27 18 Number of Samples 12 14 Average 313 398 31 95 Median 313 398 31 54 Minimum 313 111 31 18 Maximum 313 684 31 252 Standard Deviation 405 109 results prior to Dec. 2007 previously submitted to EPA Spring 2007 (ppb) 14 Dec. 2007 (ppb) 66 50 23 17 121 20 24 6 2 7 7 1 11 14 31 14 22 14 2 14 121 37 2007 samples analyzed by Axys Analytical, Ltd. Sidney, British Columbia, Canada Results rounded to nearest whole number Barbara J. Dawson, CIH, CSP DuPont Company Chambers Works, Deepwater, NJ Group 4 - Serum PFOA Results - Comparison over Time P-6 Sample Number 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 91 92 93 94 95 96 97 2000 (PPb) <LLQ 2002 (PPb) 242 <LLQ <LLQ 137 60 2004 (PPb) 143 134 49 48 17 16 163 46 2006 (PPb) 211 174 140 137 127 112 83 74 66 62 58 41 39 32 31 31 25 22 17 15 13 11 11 9 22 Spring 2007 (PPb) 99 Dec. 2007 (ppb) 105 139 148 95 113 77 38 69 69 38 44 34 36 20 24 33 38 28 18 14 8 15 13 15 105 72 45 31 10 20 3 34 63 Number of Samples Average Median M in im um Maximum Standard Deviation 1 <LLQ <LLQ <LLQ <LLQ 5 146 137 <LLQ 242 91 8 77 49 16 163 60 25 63 39 9 211 57 results prior to Dec 2007 previously subm itted to EPA 1 99 99 99 99 33 49 36 3 148 40 2007 samples analyzed by Axys Analytical Ltd., Sidney, British Columbia, Canada Results rounded to nearest whole number Barbara J. Dawson, CIH, CSP DuPont Company Performance Elastomers, Chambers Works, Deepwater, NJ 2007 Serum PFOA Results p.7 Sam ple N um ber 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 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 G roup Tested Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 1 Group 2 Group 2 Group 2 Group 2 Group 2 Group 2 Group 2 Group 2 Group 3 Group 3 Group 3 Group 3 Group 3 Group 3 Group 3 Group 4 Group 4 Group 4 Group 4 Group 4 Group 4 Group 4 Group 4 Group 5 Group 5 Group 5 Group 5 Group 5 Group 5 Group 5 2007 Result (PPb) 271 4 185 303 6 22 36 358 55 16 78 25 1230 668 21 16 1610 624 1600 1215 1585 399 1570 1970 522 281 236 46 77 187 55 305 2990 3220 4090 143 1990 162 4400 1440 1850 100 192 2870 633 275 Number of Samples Average Median Minimum Maximum Standard Deviation 46 868 292 4 4400 1134 Samples analyzed by Axys Analytical, Ltd., Sidney, British Columbia, Canada Results rounded to nearest whole number Barbara J. Dawson, CIH, CSP DuPont Company Performance Elastomers, Chambers Works, Deepwater, NJ Group 1 - Serum PFOA Results - Comparison over Time p.8 Sam ple N um ber 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 2004* Result 2006* Result 2007 Result (PPb) (PPb) (PPb) 271 4 580 444 185 615 303 6 16 22 64 36 358 55 16 78 25 1230 668 21 16 Number of Samples Average Median Minimum Maximum Standard Deviation 1 580 580 580 580 4 16 285 206 254 46 16 4 615 1230 292 329 suits previously submitted to EPA 2007 samples analyzed by Axys Analytical, Sidney, British Columbia, Canada Results rounded to nearest whole number Barbara J. Dawson , CIH, CSP DuPont Company Performance Elastomers, Chambers Works, Deepwater, NJ Group 2 - 2007 Serum PFOA Results P-9 Sam ple N um ber 17 18 19 20 21 22 23 24 2007 Result (PPb) 1610 624 1600 1215 1585 399 1570 1970 Number of Samples Average Median Minimum Maximum Standard Deviation 8 1322 1578 399 1970 543 Samples analyzed by Axys Analytical, Sidney, British Columbia, Canada Results rounded to nearest whole number 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 Sam ple N um ber 25 26 27 28 29 30 31 2006* R esult 2007 Result (PPb) (PPb) 522 458 281 236 46 77 187 55 Number of Samples Average Median Minimum Maximum Standard Deviation 1 458 458 458 458 7 201 187 46 522 169 *2006 result previously submitted to EPA 2007 samples analyzed by Axys Analytical, Sidney, British Columbia, Canada 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 Sam ple N um ber 32 33 34 35 36 37 38 39 2006* Result 2007 Result (PPb) (PPb) 305 2990 1640 3220 1700 4090 143 1990 162 4400 Number of Samples Average Median Minimum Maximum Standard Deviation 2 1670 1670 1640 1700 42 8 2163 2490 143 4400 1776 *2006 results previously submitted to EPA 2007 samples analyzed by Axys Analytical Ltd., Sidney, British Columbia, Canada Results rounded to nearest whole number Barbara J. Dawson, CIH, CSP DuPont Company Performance Elastomers, Chambers Works, Deepwater, NJ Group 5 - Serum PFOA Results - Comparison over Time Sam ple Num ber 40 41 42 43 44 45 46 2004* R esult 2006* Result 2007 R esult (PPb) (PPb) (PPb) 1280 2990 1440 4380 1850 167 100 192 2870 633 316 275 Number of Samples Average Median Minimum Maximum Standard Deviation 1 1280 1280 1280 1280 4 1963 1653 167 4380 2068 7 1051 633 100 2870 1042 *2004 and 2006 results previously submitted to EPA 2007 samples analyzed by Axys Analytical, Ltd., Sidney, British Columbia, Canada Results rounded to nearest whole number Barbara J. Dawson, CIH, CSP