Document 85OV4bBdnpgJzezjM2pKD1jq5

Katherine E. Reed, Ph.D. Staff Vice President 3IVI Environmental, Health and Safety Operations p. 1 900 Bush Avenue. Building 42-2F.-26 PO Box 33331 St. Paul, MN 55133-3331 651 778 4331 AZX&- 3 1 ^ Certified Mail 06H0V?! f-.HIG*- 50 November 15, 2006 Document Processing Center EPA East - Room 6428 Attn: Section 8(e) Office of Pollution Prevention and Toxics US EPA 1200 Pennsylvania Avenue NW Washington DC 20460-0001 3?3 ** NO CBI Re: TSCA 8(e) Substantial Risk Notice: Supplemental to Docket No. 8EHQ-0598373; Sulfonate-based and Carboxylic-based Fluorochemicals To whom it may concern: 3M is submitting this notice to supplement its previous submissions on sulfonate-based and carboxylic-based fluorochemicals. The enclosed analytical reports are part of 3M's ongoing Decatur, Alabama site monitoring program. Interim Report #22 - Analysis of Soil Samples and Interim Report #24 - Analysis of Water, Sludge, and Sediment Samples were prepared by Exygen Research Laboratory and include data on Perfluorobutanesulfonate (PFBS), Perfluorohexanesulfonate (PFHS), and Perfluorooctanesulfonate (PFOS) in subsurface soil, ground water, surface water, and sediment collected from sites adjacent to the 3M Decatur production facility. 3M is submitting this report under TSCA section 8(e). The specific offsite data that 3M believes are reportable are detailed in the enclosed summary table. The complete reports, which contain both onsite and offsite data, are also enclosed. Please note that although the reports are entitled "Interim", they are audited final reports. The "interim" designation has been applied because the entire Decatur site monitoring work-plan is ongoing. If you have any questions, please do not hesitate to contact Deanna Luebker at (651)737-1374. f Sincerely, T Katherine E. Reed Staff Vice President, Environmental, Health and Safety Operations Enclosures r 89070000042 890 0o00o4 Surface Water PFBS, PFHS and PFOS Concentrations April 2006 S am p le ID DAL-SW -BPP01-0-060413 DAL-SW -BPP02-0-060413 DAL-SW -BPP03-0-060413 DAL-SW -BCT01 -0-060412 DA L-S W -B C T 0 2 -0 -0 6 0 4 12 D A L-S W -B C T 03-0-060412 D A L-S W -B C 01-0-060412 D A L-S W -B C 02-0-060412 DAL-SW -BC03-0-060414 D A L-S W -B C 04-0-060414 DAL-SW -BC05-0-060414 D A L-S W -O S P 01-0-060413 D A L-SW -O SP02-0-060413 D A L-SW -O SP03-0-060413 D e s c rip tio n Marsh w est of site Marsh w est of site Marsh w est of site Unnam ed tributary to Bakers C reek at western site boundary Unnam ed tributary to Bakers C reek at southern site boundary Unnam ed tributary to Bakers C reek south of site Bakers C reek south of site Bakers C reek south of site Bakers C reek east of site Bakers C reek east of site Bakers C reek east of site Pond on-site Pond on-site Pond on-site Average Average Average PFBS PFHS PFOS (ppb, ng/mL) (ppb, ng/mL) (ppb, ng/mL) 7.49 60.8 437 5.77 39.7 354 5.21 38.2 326 0.479 2.18 15.1 2.26 13.6 279 0.972 4.47 44.2 0 .0 6 4 8 0 .0 3 1 6 0.0627 0.0669 0.0377 0.0915 0.153 0.442 3.92 0.493 2.18 27.7 0.0719 0.0618 0.686 0.189 0.0462 0.560 0.342 0.316 0.562 0.495 2.82 2.38 C:\DOCUME~1\Us324013\LOCALS~1\Temp\notesBAAA25\Sulfonate Data - Nov. 2006 Submission data summary.xls