Document 7OZz0q9rE5kqnDNKodOEMYDaE

p. 1 TAFT, STETTINIUS & HOLLISTER LL P NORTHERN KENTUCKY OFFICE CLEVELAND, OHIO OFFICE SUITE 340 3500 BP TOWE R 1717 DIXI E COVINGTON, KENTUCKYV41011-4704 425 WALNUT STREET, SUITE 1800 200 PUBLIC SQUARE CLEVELAND, OHIO 44114-2302 606-331-2838 216-241-283 8 513-381-2838 FAX : 513-381-661 3 CINCINNATI, OHIO 45202-3957 FAX : 216-241-3707 ~ COLUMBUS, OHIO OFFICE ( DAYTON, OHIO OFFICE 513-381-2838 21 EAST STATE STREET SUITE 900 COLUMBUS, OHIO 43215-422 1 ~J 110 NORTH MAIN STREET FAX : 513-381-0205 614-221-2838 DAYTON, OHIO 45402-1786 FAX :614-221-2007 937-228-2838 www.taitlaw .com FAX : 937-228-2816 ~ ~ _ f _ - ~ . _, ~ ~~ 2 yI { Z ROBERT A . BILOTT f~ t (513) 357-9638 bilott@taftlaw .com February 2, 2007 FEDERAL EXPRESS AND ELECTRONIC MAI L Dr . Charles M . Auer Mary Dominiak USEPA USEPA 1201 Constitution Avenue, N .W . 1201 Constitution Avenue, N .W . Room 3166A Room 4410 S Washington, DC 20004 Washington, DC 20004 Jennifer Seed, Ph .D. John Stine USEPA Site Assessment and Consultation Unit 1201 Constitution Avenue, N . W. Environmental Health Divisio n Room 6334A Minnesota Department of Health Washington, DC 20004 625 Robert St ., N. St. Paul, MN 55164 James Kelly, M .S . Helen Goede n Health Assessor Minnesota Health Department Site Assessment and Consultation Unit 625 Robert St ., N. Environmental Health Division St . Paul, MN 55164 Minnesota Department of Health 625 Robert St., N. St. Paul, MN 55164 Gary Krueger Donald Kriens Remediation Division Industrial Divisio n Superfund & Emergency Response Section Land & Water Quality Section Minnesota Pollution Control Agency Minnesota Pollution Control Agency 520 Lafayette Road North 520 Lafayette Road North St. Paul, MN 55155 St . Paul, MN 55155 W0886592 .1 ~ p. 2 February 2, 200 7 Page 2 Michael Kanner Doug Wetzstein Manager Supervisor Superfund & Emergency Response Section Superfund & Emergency Response Section Minnesota Pollution Control Agency Minnesota Pollution Control Agenc y 520 Lafayette Road North 520 Lafayette Road North St. Paul, MN 55155 St . Paul, MN 55155 Greg Hammond Environment Canada Polic y 351 St . Joseph Blvd . Gatineau, Quebec KIA 0H3 Canada Re : Perfluorochemical Residential Exposure Data For Washington County, Minnesota Ladies and Gentlemen : In letters dated May 12, October 20, November 10, 2005, and January 13, 2006, we provided information regarding levels of various perfluorochemicals (PFCs), including PFOA and PFOS, detected in blood, soil, and water in the vicinity of 3M's perfluorochemical operations in Washington County, Minnesota . In recognition of the potential threat to human health and the environment revealed by the data, and in response to USEPA's prior public requests for perfluorochemical monitoring data, we are providing additional data to you for inclusion in USEPA's Administrative Record 226 and EPA-HQ-OPPT-2003-0012 to supplement the data we provided previously . In particular, we are providing clarification with respect to the extent of our available data regarding detections of PFBA in the blood of residents exposed to PFBA in their drinking water . We thought this information might be of value in connection with the recent disclosure by the Minnesota Department of Health ("MDH") that PFBA has now been found in additional public water supply wells in Washington and Dakota Counties at levels exceeding the State's current guideline of 1 .0 part per billion . (See Exhibit A) In our last letter on this topic dated January 13, 2006, we provided our own tap water sampling data confirming that PFBA had been found in tap water supplied by the City of Oakdale, Minnesota, at a level exceeding 1 .0 part per billion, and that the level of PFBA in that water was actually more than double the amount of either PFOA and PFOS in the tap water. MDH's own recent sampling confirms that similar, if not higher, PFBA concentrations are present in additional public water supplies serving tens of thousands of additional residents of Washington and Dakota Counties . (See id) Data independently collected and provided to us recently by an area resident reveal similarly elevated PFBA W0886592 .1 cr~ p. 3 February 2, 200 7 Page 3 concentrations in water from three wells identified to us as "Old Cottage Grove wells" (1 .83 ppb, 1 .85 ppb, and 1 .25 ppb) and from tap water identified to us as being supplied by the City of South St . Paul (1 .64 ppb).'-' (See Exhibit B) These levels all also exceed the current 1 .0 ppb well guideline for PFBS in drinking water . Although a substantial number of the area blood samples referenced in our earlier letters were not analyzed for PFBA, some of the later samples included PFBA analysis and reveal detections as high as 2 .92 ppb in the blood of an exposed individual . We have highlighted the available PFBA blood results in the following charts . We thought data confirming detections of PFBA in any exposed individuals would be of use to regulatory agencies evaluating this issue, particularly in light of MDH's current understanding that "PFBA does not appear to accumulate in animals or people ." (Exhibit A ) Updated PFC results for serum samples collected and analyzed from Washington County, Minnesota, residents (this time, also noting PFBA blood results, if any) are summarized in the charts below . New serum data not included with our previous letters or included in 3M's August 4, 2006, letter forwarding some of our additional sampling information are highlighted below in bold type. The lab results for the new blood data are attached as Exhibit C . For privacy reasons, the names, addresses, and specific ages of those sampled are omitted from this submission . Please note that all results were provided by Axys Analytical Services LTD in Canada and were obtained, arranged for, and paid for without any involvement by 3M . CHART A - OAKDALE CITY WATER CUSTOMER S YEARS TOTAL ON PFOA PFOS PFBA PFCs(ppb)*/ SEX AGE WATER (ppb)/Dup. (ppb)/Du p. (ppb)/Dup . Dup . M <18 <10 155 .0 180.0 1 .16 371 .35 M 41-50 N/A 121 .0 109.0 N/T 267 .12 F 51-60 >30 117 .0 91 .8 N/T 240 .06 We understand that the private citizen who reported these data to us arranged and paid for this testing and analysis through Axys Analytical Services, LTD in Canada . W0886592 .1 ~_2~. p. 4 February 2, 200 7 Page 4 YEARS TOTAL ON PFOA PFOS PFBA PFCs(ppb)*/ SEX AGE WATER (pnb)/Du p. (pnb)/Du p. (nab)/Du p. Dup . F 51-60 10-20 113 .0 167.0 N/D 357 .34 M >70 >30 105 .0 113 .0 N/T 241 .45 F 51-60 10-20 104 .0 108 .0 N/D 252 .23 M 51-60 20-30 104 .0/103 .0 70.3/72 .7 N/T 192 .44/195 .54 M 61-70 20-30 100 .00 131 .0 N/T 293 .08 M 41-50 10-20 97 .9 121 .0 N/D 244 .71 F 51-60 20-30 96 .1 67 .8 N/T 180. 2 F 41-50 <10 95 .1/89 .1 85 .9/79 .8 N/T 200 .71/186 .15 M 51-60 10-20 92 .7/92 .5 88 .0/111 .0 2.92 211 .78/240 .23 M 51-60 20-30 86 .8 125 .0 N/T 248 .0 1 F 61-70 >30 85 .7 121 .0 N/D 232 .86 M >70 N/A 82 .3 118 .0 N/T 221 .79 F 61-70 20-30 80 .5 163 .0 N/T 212 .40 M >70 >30 78 .6 112 .0 N/T 210 .63 F 41-50 N/A 77 .5 78 .4 N/T 178 .51 F 31-40 10-20 75 .9 103 .0 N/D 196 .84 F 51-60 20-30 74 .9 61 .1 N/T 152 .72 M 31-40 10-20 74 .6 91 .0 N/T 182 .36 F 18-30 N/A 70 .9 112 .0 N/D 200 .91 F >70 >30 69 .3 102 .0 N/T 191 .84 F 41-50 N/A 69 .0 77 .2 N/T 163 .79 W0886592 .1 14 p. 5 February 2, 200 7 Page 5 YEARS TOTAL ON PFOA PFOS PFBA PFCs(ppb)*/ SEX AGE WATER (pnb)/Du p. (ppb)/Dup . (ppb)/Du p. Dup . M <18 <10 68 .3 50 .1 N/T 134.12 M 10-30 <10 67 .4 83 .3 N/D 167 .12 M 41-50 10-20 63 .3 76.7 N/T 158 .88 F 41-50 <10 63 .3 73.1 N/T 150 .11 F 51-60 10-20 60 .6 92.5 N/D 184 .71 F 61-70 N/A 59 .9 71 .0 N/T 145 .61 F N/A 10-20 59 .8 109 .0 N/D 183 .42 F 61-70 >30 58 .7 73.4 N/T 149 .48 M 61-70 <10 58 .7 61 .7 N/T 134 .64 F 61-70 20-30 58 .3 68.1 N/D 154 .95 F 41-50 20-30 57 .8 70.4 N/T 146 .46 M 41-50 10-20 56 .2 116 .0 N/D 193 .95 F 31-40 10-20 48 .4 71 .9 N/T 132 .83 M 61-70 >30 46 .1 85 .3 N/D 131 .40 M <18 <10 45 .4/46 .4 68.2/71 .7 N/D 130 .85/132.92 M 51-60 10-20 44 .6 60.4 N/T 115.40 M 41-50 <10 44 .1 55 .2 N/T 114 .29 M 18-30 10-20 43 .5 54 .4 N/T 107 .12 M <18 10-20 42 .4 51 .1 N/T 107 .84 M 61-70 >30 40 .7 80 .3 N/D 137 .38 M 61-70 20-30 39 .8 46 .5 N/D 104 .37 W0886592 .1 p. 6 February 2, 200 7 Page 6 YEARS TOTAL ON PFOA PFOS PFBA PFCs(ppb)*/ SEX AGE WATER (ppb)/Dup . (ppb)/Dup. (ppb)/Du p. Dup . F 41-50 10-20 39 .3 46.3 N/D 94 .34 F 18-30 20-30 38 .8 47.6 N/T 96 .33 M 51-60 >30 37 .1 51 .1 N/T 102.01 F 41-50 10-20 33 .8 46.4 N/D 91 .07 F 51-60 10-20 33 .2 59.5 N/T 105.24 F 41-50 <10 32 .7 41 .5 N/T 89 .66 M 41-50 10-20 32 .1 57.6 N/T 103.35 F <10 <10 30.7 56.8 N/T 99 .11 F <10 <10 27.5 62.0 N/T 98 .63 F 51-60 10-20 26.2 104 .0 1 .06 149.68 F 51-60 <10 25 .2 46.2 N/D 77 .18 M 51-60 10-20 24 .5 37.2 N/D 69 .72 F 41-50 10-20 23 .8 40.3 N/D 74 .18 F 41-50 10-20 23 .6 72.9 N/D 107 .32 F 18-30 20-30 23 .1 29.2 N/T 59 .83 F 51-60 20-30 22 .2 46.1 N/T 74 .88 F 31-40 <10 21 .1/19.6 12 .8/8.81 N/T 29 .64/36 .80 M 41-50 10-20 20 .3 32.5 N/D 60 .23 F 51-60 10-20 19 .7 52 .6 N/D 76 .87 F <18 10-20 19 .1 42 .9 N/T 71 .21 F 41-50 <10 18 .6 21 .0 N/D 43 .83 W0886592 .1 (? p. 7 February 2, 200 7 Page 7 YEARS TOTAL ON PFOA PFOS PFBA PFCs(ppb)*/ SEX AGE WATER (pnb)/Du p, (pnb)/Du p. (unb)/Dup. Dup . F <18 <10 17 .1 20 .1 N/T 43 .08 M <18 <10 16 .1 24 .3 N/D 51 .95 M 31-40 <10 15 .5 12 .7 N/T 29 .31 F 41-50 <10 14 .9 23 .6 N/D 42 .94 F 31-40 10-20 14 .6 37 .4 N/D 59 .61 M 41-50 <10 14 .6 30 .8 N/T 49 .49 M <18 <10 13 .4 50 .1 N/D 83 .18 F 18-30 <10 13 .3 12 .3 N/T 27 .14 M 41-50 <10 12 .8 30 .1 N/D 47 .16 M 41-50 <10 11 .2 27 .7 N/D 57 .94 F 18-30 <10 10 .7 23 .1 N/T 35 .87 M 41-50 10-20 10 .5 35 .2 N/D 52 .66 M >70 20-30 10 .2 24 .2 N/T 35 .31 F 31-40 <10 8 .76 30 .1 N/D 45 .35 F 18-30 <10 7 .35 10 .5 N/T 19 .39 F 61-70 >30 6 .96 22 .6 N/T 36 .00 M 31-40 <10 6 .16 16 .1 N/D 26 .90 F 18-30 10-20 6 .09 17 .7 N/D 26 .79 W0886592 .1 7 p. 8 February 2, 200 7 Page 8 YEARS TOTAL ON PFOA PFOS PFBA PFCs(ppb)*/ SEX AGE WATER (nnb)/Du p. (ppb )/Dup. (pph)/Dup . Dup . M 41-50 <10 5 .52 8 .27 N/D 15 .82 N/T=not teste d N/A=data not available N/D=not detected above laboratory detection limits *Total of detected levels of PFPeA, PFHxA, PFHpA, PFOA, PFNA, PFDA, PFUnA, PFDoA, PFBS, PFHxS, PFOS, PFBA, and PFOSA in the blood sampl e CHART B - LAKE ELMO/COTTAGE GROVE/ HASTINGS CITY WATER CUSTOMERS YEARS ON PFOA PFOS PFBA TOTAL SEX AGE WATER (nab) (UUb) (ppb) PFCs(ppb)*** F 51-60 <10 42 .3 49 .5 N/T 106 .04 M 18-30 10-20 11 .4 50 .8 N/T 72 .75 M <18 <10 7 .89 19 .0 N/D 29 .72 M 51-60 <10 7 .21 38 .9 N/T 57 .56 F N/A N/A 6 .9 19 .6 N/T 33 .04 M 31-40 10-20 6 .78 (4 .22*) 10 .5 (7 .95*) N/D 24 .07 M 31-40 >30 6 .13 13 .5 N/D 22 .77 F 41-50 <10 4 .97 12 .9 N/D 21 .57 M >70 >30 4 .34 14 .0 N/D 21 .99 F 51-60 10-20 4 .10 17 .3 N/T 26 .12 M 51-60 10-20 3 .89 21 .2 N/T 29 .84 W0886592 .1 f7 .~, p. 9 February 2, 200 7 Page 9 YEARS ON PFOA PFOS PFBA TOTAL SEX AGE WATER (aA bj (ppb) (ppb) PFCs(ppb)*** M 31-40 <10 3 .79 14 .9 N/D 24.1 6 F N/A N/A 3 .36 21 .4 N/D 29.36 F** 51-60 >30 2 .21 7 .88 N/T 18 .27 F <18 <10 1 .95 N/D N/D 1 .95 * = whole blood analysi s **= former 3M employee N/T=not tested N/A=data not availabl e N/D=not detected above laboratory detection limits ***Total of detected levels of PFPeA, PFHxA, PFHpA, PFOA, PFNA, PFDA, PFUnA, PFDoA, PFBS, PFHxS, PFOS, PFBA, and PFOSA in the blood sampl e CHART C - WASHINGTON COUNTY PRIVATE WELL USERS 1. Lake Elmo Area Private Well s YEARS ON PFOA PFOS PFBA TOTAL SEX AGE WATER (ppb) (ppb) (ppb) PFCs(ppb)* M 41-50 <10 133 .0 155.0 N/D 322 .93 F <18 <10 110 .0 111.0 N/T 247 .19 F 41-50 10-20 72 .9 87.6 N/T 175 .25 F <18 10-20 55 .4 60.0 N/T 124 .35 M 41-50 20-30 45 .7 19.7 N/D 72 .1 1 F 41-50 <10 39 .0 57 .4 N/D 112 .63 F 61-70 20-30 30 .9 88 .6 N/T 128.93 W0886592.1 P . 10 February 2, 200 7 Page 10 YEARS ON PFOA PFOS PFBA TOTAL SEX AGE WATER (ppb) (ppb) (ppb ) PFCs(ppb)* M 61-70 20-30 24 .2 38 .0 N/T 69 .91 M 51-60 10-20 27 .0 28 .5 N/T 62 .32 F 51-60 >30 24.0 17 .1 N/D 50 .96 M 51-60 10-20 20 .1 53 .5 N/D 86 .21 M N/A N/A 16 .4 22 .1 N/D 44 .43 F 41-50 10-20 15 .7 9 .27 N/D 27 .68 F >70 >30 14 .3 8 .90 N/D 26 .27 M 61-70 >30 12.1 9 .78 N/D 24 .89 M 61-70 10-20 10 .4 42 .0 N/D 61 .40 M 41-50 10-20 9 .66 26 .6 N/T 42 .51 M 18-30 20-30 7 .56 17 .3 N/T 33 .70 M 61-70 20-30 6 .95 43 .1 N/T 55 .00 M 51-60 20-30 6 .78 21 .0 N/T 36 .91 M 61-70 >30 6 .10 43 .7 N/T 54 .19 F 61-70 10-20 6 .06 36 .9 N/D 49 .09 F 51-60 10-20 5.92 29 .5 N/T 41 .26 M 51-60 N/A 5 .35 20 .4 N/T 29 .02 F 41-50 N/A 3 .14 11 .2 N/T 16 .29 F 61-70 >30 2 .4 12 .0 N/T 17 .91 N/T=not tested N/A=data not available N/D=not detected above laboratory detection limit s *Total of detected levels of PFPeA, PFHxA, PFHpA, PFOA, PFNA, PFDA, PFUnA, PFDoA, PFBS, PFHxS, PFOS, PFBA, and PFOSA in the blood sampl e W0886592 .1 /_l P . 11 February 2, 200 7 Page 1 1 2. Cottage Grove/Hastings Area Private Wells YEARS ON PFOA PFOS PFBA TOTA L SEX AGE WATER (ppb) (ppb) (ppb) PFCs(ppb)*** M** >70 20-30 19 .7 108 .0 N/T 151 .4 1 F 31-40 <10 17 .1 16 .9 N/D 45 .18 F 61-70 10-20 14 .2 35 .6 2 .34 57 .93 F 61-70 <10 10 .3 28 .7 N/D 45 .53 F 51-60 20-30 9 .12 42 .8 N/D 57 .61 M 61-70 <10 9 .40 39 .0 N/D 61 .40 M 31-40 10-20 8 .80 40 .6 N/T 61 .82 F 61-70 >30 7 .38 32 .5 N/T 66 .46 M >70 >30 6 .42 32 .5 N/T 45 .32 M <18 <10 5 .75 14 .9 N/D 27 .01 F 41-50 20-30 4 .97 16 .3 N/D 25 .08 F 41-50 <10 4 .68 12 .0 N/D 20 .71 F 41-50 <10 4 .31 23 .5 N/D 32 .92 F 51-60 10-20 4 .12 12 .4 N/T 18 .60 M 61-70 10-20 3 .88 38 .6 N/D 49 .39 F <18 <10 3 .87 15 .8 N/T 28 .51 F N/A N/A 3 .54 (2 .98*) 8 .51 (8 .3*) N/D 15 .76 F 41-50 >30 3 .39 14 .9 N/T 21 .83 F 41-50 10-20 3 .24 24 .5 N/T 35 .27 M <18 <10 2 .83 14 .8 N/T 23 .53 W0886592 .1 /i p . 12 February 2, 200 7 Page 12 YEARS ON PFOA PFOS PFBA TOTAL SEX AGE WATER (ppb) (nab) (ppb) PFCs(ppb)*** M 41-50 <10 2 .01 22 .4 N/D 29 .52 *=whole blood analysi s * *=former 3M employee N/A=data not available N/T=not tested N/D=not detected above laboratory detection limits ***Total of detected levels of PFPeA, PFHxA, PFHpA, PFOA, PFNA, PFDA, PFUnA, PFDoA, PFBS, PFHxS, PFOS, PFBA, and PFOSA in the blood sampl e ery truly y s, Robert A . Bilott RAB/md m Enclosures cc : Alan Williams, Esq . (w/ encls .) Gale D . Pearson, Esq . (w/o encls .) Stephen J. Randall, Esq . (w/o encls .) J. Mark Englehart, Esq . (w/o encls .) R . Edison Hill, Esq . (w/o encls .) Larry A . Winter, Esq . (w/o encls .) Martha K. Wivell, Esq . (w/o encls .) W0886592 .1 , ,