ADVANCE UNEDITED DRAFT Decision POPRC-1/7 on perfluorooctane sulfonate The Persistent Organic Pollutants Review Committee, Having examined the proposal by Sweden, which is a Party to the Stockholm Convention on Persistent Organic Pollutants, to list perfluorooctane sulfonate and ninety-six potential perfluorooctane sulfonate precursors in Annex A to the Convention and applied the screening criteria specified in Annex D to the Convention, Noting that the perfluorooctane sulfonate anion does not have a Chemical Abstracts Service number and does not appear as an anion in the environment, but that the perfluorooctane sulfonate acid and its salts listed in the proposal have the following Chemical Abstracts Service numbers: (a) Acid 1763-23-1 (b) K+ salt 2795-39-3 (c) Li salt 29457-72-5 (d) NH4+ salt 29081-56-9 (e) Diethanolamine salt 70225-14-8 Decides, in accordance with paragraph 4 (a) of Article 8 of the Convention, that it is satisfied that the screening criteria have been fulfilled for perfluorooctane sulfonate, as set out in the evaluation contained in the annex to the present decision; Decides also, in accordance with paragraph 6 of Article 8 of the Convention and paragraph 29 of decision SC-1/7 of the Conference of the Parties to the Stockholm Convention, to establish an ad hoc working group to review the proposal further and to prepare a draft risk profile in accordance with Annex E to the Convention; Decidesfurther that issues related to the inclusion of potential perfluorooctane sulfonate precursors should be dealt with in developing the draft risk profile; Invites, in accordance with paragraph 4 (a) of Article 8 of the Convention, Parties and observers to submit to the Secretariat the information specified in Annex E in accordance with the format set out in annex [Y] to the report of its first meeting1before [Z], UNEP/POPS/POPRC. 1/10. 000243 P-2 Annex to decision POPRC-1/7 Evaluation of perfluorooctane sulfonate against the criteria of Annex D A.

3M Environmental, Health and Safety Operations 3M Center, Building 0224-05-W -3 S t Paul, M N 55144-1000 3 3 7 (o October 14,2010 Via Hand Delivery Document Control Office Docket AR-226 EPA East Building, Room 6428 1201 Constitution Ave., N.W.

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A(U2rO51% PFOA and Associated Salts Ecotoxicity Elements Title Activated Sludge R espiration Inhibition T es t - F C -1 0 1 5 -X Acute Toxicity o f F C -1 01 5 to the Fathead Minnow, Pim ephales prom elas Growth and Reproduction Toxicity Test with F C -1 01 5 and the Freshw ater Alga, Selenastrum capricornutum Acute Toxicity o f F C -1 0 1 5 to the Daphnd, D aphnia m agna Laboratory or Author 3M Env.

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AR226-2422 LETART LANDFILL GROUNDWATER MONITOR!

WASHINGTON WORKS - PERMIT WV0001279 TREATED SUPERNATE DISCHARGE THROUGH FILTER SYSTEM (Letter, R.

HECYCLEO 05 AR226-2656 AR226-2656 ISC Modeling Methodology and Results Introduction This report summarizes dispersion modeling that was completed for the DuPont Washington Works facility to demonstrate that the emission limits included in the form R13 permits (815E, 1353B, 1953B, and 2365C) comply with the C-8 assessment o f toxicity (CAT) recommended airborne screening level of 1.0 ug/m3 at the property line fence.

RECYCLED AR226-2670 DuPont Legal Andrea V Malinowski * Corporate Counsel DuPont Legal D-8078 E.

AR226-3145 DuPont-4002 HASKELALNLDAIBNODRUASTTORRIAYLFMOERDTICOIXNIECOLOGY H-24390: STATIC, ATOCUDTaEph4n8ia-HmOaUgnRaSCREENING TEST PURPOSE: This is a rangefmding study designed to provide an estimate of aquatic toxicity using fixed test concentrations and data measurements at predetermined intervals.

437 TRADE SECRET 4*SU_ 3LT DuPont- 11269 Study Title H-25357: Oral Approximate Lethal Dose (ALD) in Rats Laboratory Project ID: DuPont-11269 A u t h o r : Carol Finlay, B.A.

AR ff.s.6_ OGSG POSF Ongoing- ( 000279 06/22/00 T-7098.1 POSFPK PHARMACOKINETIC STUDY OF POSF IN RATS - STUDY OUTLINE Study Objective: The objective o f this study is to assess the potential for oral absorption, urinary and fecal clearance and biological persistence o f perfluorooctane sulfonyl fluoride (POSF) in male Sprague Dawley rats after a single oral dose.

-A 6 _ IZM-q TSCA NCIC Notification Form for CBI Documents Do cket Num ber: f } ( \ -3 ^ 6 Document C ontrol Num ber: 6 3 . 0 3 Document Da te: tr PDo cum en t Ty p e : b & c J3 --O TO 1 00 -a --i F3 * jr ro OOP a r n "O O --trn > - -c on oO The document referenced above is claimed as confidential business informa tion (CBI) under Section 14 of the Toxic Substances Control A ct (TSCA).