Document KR5oe6eqMYGw93dVBboYNpKpo

Katherine E. Reed. Pli.D. Stall' Vice President 3M Environmental, Health and Safely Operations d(H) Bush .Venue. Building 42-211-26 PO Box 32331 St. Paul. MN 55133-3331 651 77S 4331 Certified Mail 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. Sincerely, Katherine E. Reed Staff Vice President, Environmental, Health and Safety Operations Enclosures 89070000042 Surface Water PFBS, PFHS and PFOS Concentrations April 2006 Sample ID D AL-S W -BP P01-0-060413 D AL-S W -BP P 02-0-060413 DAL-SW -BPP03-0-060413 D AL-SW -BCT01-0-060412 D A L -S W -B C T 0 2 -0 -0 6 0 4 12 DA L-S W -B C T 0 3 -0 -0 6 0 4 12 DAL-SW -BC01 -0-060412 D A L -S W -B C 0 2 -0 -0 6 0 4 12 D A L -S W -B C 0 3 -0 -0 6 0 4 14 D A L -S W -B C 0 4 -0 -0 6 0 4 14 D A L -S W -B C 0 5 -0 -0 6 0 4 14 D A L -S W -O S P 0 1-0 -0 6 0 4 1 3 DAL-SW -O SP02-0-060413 DAL-SW -O SP03-0-060413 Description M arsh w est o f site M arsh w est o f site M arsh w est o f site Unnam ed tributary to Bakers C reek at w estern site boundary U nnam ed tributary to Bakers C reek at southern site boundary U nnam ed tributary to Bakers C reek south o f site Bakers C reek south o f site Bakers C reek south of site Bakers C reek east o f site Bakers C reek east o f site Bakers C reek east o f 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 5.21 0.479 2.26 0.972 39.7 38.2 2.18 13.6 4.47 354 326 15.1 279 44.2 0.0648 0.0669 0.153 0.0316 0.0377 0.442 0.0627 0.0915 3.92 0.493 2.18 27.7 0.0719 0.189 0.342 0.0618 0.0462 0.562 0.686 0.560 2.82 0.316 0.495 2.38 C:\DOCUME~1\Us324013\LOCALS~1\Temp\notesBAAA25\Sulfonate Data - Nov. 2006 Submission data summary.xls