Document zdGq2nLbDE7nwaL3nBL5yjDGa
NORTHERN KENTUCKY OFFICE SUITE 340
1717 DIXIE HIGHWAY COVINGTON, KENTUCKY 41011-4704
606-331-2838 513-381-2838 FAX: 513-381-6613
/? DAYTON, OHIO OFFICE SUITE 900
110 NORTH MAIN STREET DAYTON, OHIO 45402-1786
937-228-2838 FAX: 937-228-2816
Ro b e r t a . Bilott (513) 357-9638
bilott@taftlaw.com
P-1
TAFT, STETTINIUS & HOLLISTER LLP
425 WALNUT STREET, SUITE 1800
CINCINNATI, OHIO 45202-3957
513-381-2838 FAX: 513-381-0205
www.taftlaw.com
iz
AR 2 z
CLEVELAND, OHIO OFFICE 3500 BP TOWER
200 PUBLIC SQUARE CLEVELAND, OHIO 44114-2302
216-241-2838 FAX: 216-241-3707
COLUMBUS, OHIO OFFICE 21 EAST STATE STREET COLUMBUS, OHIO 43215-4221
614-221-2838 FAX:614-221 -2007
- 3/
L1
February 2, 2007
FEDERAL EXPRESS AND ELECTRONIC MAIL
Dr. Charles M. Auer USEPA 1201 Constitution Avenue, N.W. Room 3166A Washington, DC 20004
Mary Dominiak USEPA 1201 Constitution Avenue, N.W. Room 441 OS Washington, DC 20004
Jennifer Seed, Ph.D. USEPA 1201 Constitution Avenue, N.W. Room 6334A Washington, DC 20004
John Stine Site Assessment and Consultation Unit Environmental Health Division Minnesota Department of Health 625 Robert St., N. St. Paul, MN 55164
James Kelly, M.S. Health Assessor Site Assessment and Consultation Unit Environmental Health Division Minnesota Department of Health 625 Robert St., N. St. Paul, MN 55164
Helen Goeden Minnesota Health Department 625 Robert St, N. St. Paul, MN 55164
Gary Krueger Remediation Division Superfund & Emergency Response Section Minnesota Pollution Control Agency 520 Lafayette Road North St. Paul, MN 55155
Donald Kriens Industrial Division Land & Water Quality Section Minnesota Pollution Control Agency 520 Lafayette Road North St. Paul, MN 55155
W0886592.1
i
P-2
February 2, 2007 Page 2
Michael Kanner Manager Superfund & Emergency Response Section Minnesota Pollution Control Agency 520 Lafayette Road North St. Paul, MN 55155
Greg Hammond Environment Canada Policy 351 St. Joseph Blvd. Gatineau, Quebec K1A 0H3 Canada
Doug Wetzstein Supervisor Superfund & Emergency Response Section Minnesota Pollution Control Agency 520 Lafayette Road North St. Paul, MN 55155
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
p.3
February 2, 2007 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 CUSTOMERS
YEARS
TOTAL
ON
PFOA
PFOS
PFBA
PFCs(ppb)*/
SEX AGE WATER (DDbVDtlD. DDbVDuD. (DDbVDuD. Dud.
M <18 <10 M 41-50 N/A F 51-60 >30
155.0 121.0 117.0
180.0 109.0 91.8
1.16 N/T N/T
371.35 267.12 240.06
- 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
3
P-4
February 2, 2007 Page 4
SEX
AGE
YEARS ON WATER
PFOA
P P b V D llP .
PFOS
(ppbW D up.
PFBA
(p p b V D u p .
TOTAL PFCs(ppb)*/
Dup.
F 51-60 10-20 113.0
167.0
N/D
M >70 >30
105.0
113.0
N/T
F
51-60 10-20
104.0
108.0
N/D
M 51-60 20-30 104.0/103.0 70.3/72.7 N/T
M 61-70 20-30 100.00 131.0
N/T
M 41-50 10-20 97.9
121.0
N/D
F
51-60 20-30
96.1
67.8
N/T
F 41-50 <10
95.1/89.1 85.9/79.8 N/T
M 51-60 10-20 92.7/92.5 88.0/111.0 2.92
M 51-60 20-30 86.8
125.0
N/T
F 61-70 >30
85.7
121.0
N/D
M >70 N/A
82.3
118.0
N/T
F
61-70 20-30
80.5
163.0
N/T
M >70 >30
78.6
112.0
N/T
F 41-50 N/A
77.5
78.4
N/T
F
31-40 10-20
75.9
103.0
N/D
F
51-60 20-30
74.9
61.1
N/T
M 31-40 10-20 74.6 91.0 N/T
F 18-30 N/A
70.9
112.0
N/D
F >70 >30 F 41-50 N/A
69.3 69.0
102.0 77.2
N/T N/T
357.34 241.45 252.23 192.44/195.54 293.08 244.71 180.2 200.71/186.15 211.78/240.23 248.01 232.86 221.79 212.40 210.63 178.51 196.84 152.72 182.36 200.91 191.84 163.79
W0886592.1
P-5
February 2, 2007 Page 5
YEARS
TOTAL
ON
PFOA
PFOS
PFBA
PFCs(ppb)*/
SEX AGE WATER DDbVDlID. DDbVDuD. DDbVDuD. Dud.
M <18 <10
68.3
50.1
N/T
M 10-30 <10
67.4
83.3
N/D
M 41-50 10-20 63.3 76.7 N/T
F 41-50 <10
63.3
73.1
N/T
F
51-60 10-20
60.6
92.5
N/D
F 61-70 N/A
59.9
71.0
N/T
F
N/A 10-20
59.8
109.0
N/D
F 61-70 >30 58.7 73.4 N/T
M 61-70 <10 58.7 61.7 N/T
F
61-70 20-30
58.3
68.1
N/D
F
41-50 20-30
57.8
70.4
N/T
M 41-50 10-20 56.2
116.0
N/D
F
31-40 10-20
48.4
71.9
N/T
M 61-70 >30
46.1
85.3
N/D
M <18 <10
45.4/46.4 68.2/71.7 N/D
M 51-60 10-20 44.6 60.4 N/T
M 41-50 <10
44.1
55.2 N/T
M 18-30 10-20 43.5 54.4 N/T
M <18 10-20 42.4 51.1 N/T
M 61-70 >30
40.7
80.3
N/D
M 61-70 20-30 39.8 46.5 N/D
134.12 167.12 158.88 150.11 184.71 145.61 183.42 149.48 134.64 154.95 146.46 193.95 132.83 131.40 130.85/132.92 115.40 114.29 107.12 107.84 137.38 104.37
W0886592.1
P-6
February 2, 2007 Page 6
YEARS
TOTAL
ON
PFOA
PFOS
PFBA
PFCs(ppb)*/
SEX AGE WATER DDbVDuD. DDbVDlID. (Ppb)/Dup. Dud.
F
41-50 10-20
39.3
46.3
N/D
F
18-30 20-30
38.8
47.6
N/T
M 51-60 >30
37.1
51.1
N/T
F
41-50 10-20
33.8
46.4
N/D
F
51-60 10-20
33.2
59.5
N/T
F 41-50 <10 32.7 41.5 N/T
M 41-50 10-20 32.1 57.6 N/T
F <10 <10 30.7 56.8 N/T
F <10 <10
27.5
62.0
N/T
F
51-60 10-20
26.2
104.0
1.06
F 51-60 <10 25.2 46.2 N/D
M 51-60 10-20 24.5 37.2 N/D
F
41-50 10-20
23.8
40.3
N/D
F
41-50 10-20
23.6
72.9
N/D
F
18-30 20-30
23.1
29.2
N/T
F
51-60 20-30
22.2
46.1
N/T
F 31-40 <10
21.1/19.6 12.8/8.81 N/T
M 41-50 10-20 20.3 32.5 N/D
F
51-60 10-20
19.7
52.6
N/D
F <18 10-20 19.1 42.9 N/T
F 41-50 <10 18.6 21.0 N/D
94.34 96.33 102.01 91.07 105.24 89.66 103.35 99.11 98.63 149.68 77.18 69.72 74.18 107.32 59.83 74.88 29.64/36.80 60.23 76.87 71.21 43.83
W0886592.1
February 2, 2007 Page 7
SEX
AGE
YEARS ON WATER
TOTAL
PFOA
PFOS
PFBA
PFCs(ppb)*/
DDbVDllD. DDbi/DuD. DDbVDllD. Dud.
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
p.8
February 2, 2007 Page 8
SEX
AGE
YEARS ON WATER
PFOA
ppbVDup.
PFOS
PPbVDuP.
PFBA
DDbVDuD.
TOTAL PFCs(ppb)*/
Dud.
M 41-50 <10
5.52
8.27
N/D
15.82
N/T=not tested 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 sample
CHART B - LAKE ELMO/COTTAGE GROVE/ HASTINGS CITY WATER CUSTOMERS
YEARS ON PFOA SEX AGE WATER (PPb)
PFOS
(PPb)
PFBA (ppb)
TOTAL PFCstopbl
F 51-60 <10 42.3 49.5 N/T
M 18-30 10-20 11.4 50.8 N/T
M <18 <10
7.89
19.0
N/D
M 51-60 <10
7.21
38.9
N/T
F N/A N/A
6.9
19.6 N/T
M 31-40 10-20 6.78 (4.22*) 10.5 (7.95*) N/D
M 31-40 >30
6.13
13.5 N/D
F 41-50 <10
4.97
12.9 N/D
M >70 >30
4.34
14.0 N/D
F
51-60 10-20
4.10
17.3 N/T
M 51-60 10-20 3.89 21.2 N/T
106.04 72.75 29.72 57.56 33.04 24.07 22.77 21.57 21.99 26.12 29.84
W0886592.1
P-9
February 2, 2007 Page 9
SEX
AGE
YEARS ON WATER
PFOA (PPb)
PFOS (PPb)
PFBA (PPb)
TOTAL PFCstDDbV
M 31-40 < 1 0 3.79 14.9 N /D 24.16
F
N /A
N /A
3.36
21.4
N /D
29.36
p ** 51-60 >30
2.21
7.88 N /T 18.27
F <18 < 1 0 1.95 N /D
N /D 1.95
* = whole blood analysis **= former 3M employee N/T=not tested 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 sample
CHART C - WASHINGTON COUNTY PRIVATE WELL USERS 1. Lake Elmo Area Private Wells
SEX M F F F
M F
F
AGE 41-50 <18 41-50 <18 41-50 41-50 61-70
YEARS ON WATER
<10 <10 10-20 10-20 20-30 <10 20-30
PFOA (PPb) 133.0 110.0 72.9 55.4 45.7 39.0 30.9
PFOS (PPb) 155.0 111.0 87.6 60.0 19.7 57.4 88.6
PFBA (ppb) N/D N/T N/T N/T N/D N/D N/T
TOTAL PFCstDDbi 322.93 247.19 175.25 124.35 72.11 112.63 128.93
W0886592.1
(-
February 2, 2007 Page 10
SEX
AGE
YEARS ON WATER
PFOA (PPb)
PFOS (PPb)
PFBA (pph)
TOTAL PFCsiDDbV
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 limits *Total of detected levels of PFPeA, PFHxA, PFHpA, PFOA, PFNA, PFDA, PFUnA, PFDoA, PFBS, PFHxS, PFOS, PFBA, and PFOSA in the blood sample
W0886592.1
February 2, 2007 Page 11
2. Cottage Grove/Hastings Area Private Wells
SEX M** F F F F M M F M M F F F F M F F F F M
AGE >70 31-40 61-70 61-70 51-60 61-70 31-40 61-70 >70 <18 41-50 41-50 41-50 51-60 61-70 <18 N/A 41-50 41-50 <18
YEARS ON WATER 20-30 <10 10-20 <10 20-30 <10 10-20 >30 >30 <10 20-30 <10 <10 10-20 10-20 <10 N/A >30 10-20 <10
PFOA (PPbi
PFOS (ppb)
19.7 108.0
17.1 16.9
14.2 35.6
10.3 28.7
9.12 42.8
9.40 39.0
8.80 40.6
7.38 32.5
6.42 32.5
5.75 14.9
4.97 16.3
4.68 12.0
4.31 23.5
4.12 12.4
3.88 38.6
3.87 15.8
3.54 (2.98*) 8.51 (8.3*)
3.39 14.9
3.24 24.5
2.83 14.8
PFBA (ppb) N/T N/D 2.34 N/D N/D N/D N/T N/T N/T N/D N/D N/D N/D N/T N/D N/T N/D N/T N/T N/T
TOTAL PFCsDDbl*** 151.41 45.18 57.93 45.53 57.61 61.40 61.82 66.46 45.32 27.01 25.08 20.71 32.92 18.60 49.39 28.51 15.76 21.83 35.27 23.53
W0886592.1
February 2, 2007 Page 12
SEX
AGE
YEARS ON WATER
PFOA (PPb).
PFOS (PPb)
PFBA (PPb)
TOTAL PFCsiDDbi**
M 41-50 <10
2.01
22.4
N/D 29.52
*=whole blood analysis **=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 sample
RAB/mdm Enclosures cc: Alan Williams, Esq. (w/ ends.)
Gale D. Pearson, Esq. (w/o ends.) Stephen J. Randall, Esq. (w/o ends.) J. Mark Englehart, Esq. (w/o ends.) R. Edison Hill, Esq. (w/o ends.) Larry A. Winter, Esq. (w/o ends.) Martha K. Wivell, Esq. (w/o ends.)
W0886592.1
