Document 7R0yy1eZdN1xwVqL5EeZGNQM6

* 3TM Katherine E. Reed, Ph.D. Staff Vice President 1066- 0 0 373 3M Environmental, Health and Safety Operations received CERT CBIl 2086OCT 30 Kill: 28 900 Bush Avenue, Buildin|*2iZ-2E-26 PO Box 33331 St. Paul, MN 55133-3331 651 778 4331 A-/ZZ2C _ 3 7-ZI ------Certified Mail October 24, 2006 4S. Ep 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 NO CBI Re: TSCA 8(e) Substantial Risk Notice: Supplemental to Docket No. 8EHQ-0598-373; 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 assessment for PFOA. 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 PFOA in subsurface soil, ground water, surface water, and sediment collected from sites adjacent to the 3M Decatur production. 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 tables. 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. Katherine E. Reed Staff Vice President, Environmental, Health and Safety Operations Enclosures 89070000024 890 700 0 :' ; C.,0 ... (J1 crj