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ENVIRONMENTAL PHYSICAL/CHEMICAL, FATE, EFFECTS AND MONITORING STUDIES BIODEGRADATION BACK TO COMPOUNDS STUDY TITLE Biodegradation Executive Sum m ary COMPOUND LABORATORY REPORT NUMBER SUMMARIES The A erobic Biodegradation of N-EtFOSE A lcohol by the M icrobial A c tiv ity P re se n t in M u n icip a l W a s te W a te r T re a tm e n t S lu d g e N -E tF O S E E00-2252 Robust Sum m ary The 18-Day A erobic Biodegradation Study of PerfluorooctanesulfonylBased C hem istries 18 Day PFOS 18 Day PFOA 18D ayFO S A 18Day N-EtFO SAA 18 Day N -EtFO SA 18 Day N-EtFOSE The 35-Day A erobic Biodegradation Study of PFOS PFOS E01-0415 E01-0444 Robust Sum m ary Robust Sum m ary

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"McCrea, Deborah" <mccrea@taftlaw.com> 05/20/2010 01:59 PM P-1 3 X fc 6 ) To NCIC OPPT@EPA cc "Bilott, Robert A."