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Attachment 2 Analytical Report Air Sampling Fluorochemical Report DuPont Washington Works - Air Sampling Program Round 7 Exygen Research Report No.

Proven Results.

3M General Offices AR226-1895 3M Center St.

AR226-2462 From: Daw n D Jackson on 06/23/99 07:55 A M To: Robert L Rrtchey/CL/DuPont@DuPont.

AR226-2525 - /X S O O C A S ~ *>/' 3_CJ, cJO r) C ^ S PENNY, m e r e ARE THE R E S U L T S FOR THE C-rQ IK WA TE R S A M P L E S T H AT YOU TE-RY .

AR226-2615 AR226-2615 Draft This report was not issued as shown, but was incorporated into larger Chambers W orks report under the Consent Order.

RECYCLED '4 AR226-2657 AR226-2657 ISC Modeling Methodology and Results Introduction This report summarizes dispersion modeling that was completed in support of anticipated updates to R13 permits 1953A and 2365B at the DuPont Washington Works site.

1 -------------------------------------------------------------------------------------------------------- IU A 6 - 3 -2 7 / 453 A M - /327 DuPont-11604 TRADE SECRET Study Title H-25435: Influence on Growth and Growth Rate of the Green Alga Selenastrum capricomutum Laboratory Project ID : DuPont-11604 Test Guidelines: OECD Guideline for Testing Chemicals Section 2: Effects on Biotic Systems, Number 201 (1984) Commission Directive 92/69/EEC EEC Method C3 (1992) Author: Terry Lee Sloman, B.S.

% AR226-3322 P raJiH 'inav'j S c e ^ O oOMMCa i m <y- Tay Perfluoroalkyliodide (Rfl) Homologue Distributions DuPont currently producesMBdistinct pure homologue or mixed homologues distillation cuts -.\ - Homologue distributions, and therelative balance between products, are governed by iht0|hi lrrd|extrnal customer requirements DuPont Confidential - Draft!!

AR226-3353 1 A Typical Fluorotelomer-Based Polymer ^ueous Dispersion of.... iQ-200 nm Polymeric Particles, > 3 4 ) Ready Biodegradation : Methods 6 8 F(CF2)7!

3M Environmental Laboratory POOO3268; Interim Report#4 Analytical Report Analysis of PFBS, PFHS, and PFOS from 3M Decatur Offsite 600 Series Wells MPI GLP Protocol Number: P0003268 Interim Report#4 Data Requirement 40 CFR Part 792 Author M ichelle D.

SEVERN T RENT STL STL Chicago 2 41/ Bond Street University Park, IL 6046b Tel: 708 534 5200 Fax; 708 534 5211 www.si/-jnc.com s iv e r n it r e M ANALYTICAL ::JOB :N C M B E K : i-2;33 6 2 9 Prepar ed For : ' /Weston o 1u tion s , Inc . 1,400 West o n Way Building " 5-2... ..

fjVQ6-OOG6 Centre Analytical Laboratories, ine 3048 Research Drive Phone: (814) 231-8032 State College, PA 16801 Fax: (814) 231-1253 or (814) 231-1580 Analytical Report Fluorochemical Characterization of Drinking Water Samples Pensacola, FI (W2176) Centre Analytical Laboratory Report No. 023-007D Testing Laboratory Centre Analytical Laboratory, Inc. 3048 Research Drive State College, PA 16801 3M Environmental Laboratory Contact Kent R.

Afm 6- o w MECHANISM OF TOXICITY OF A UNIQUE PESTICIDE:m ETHYLPERFLUOROOCTANE SULFONAMIDE (NEPFOS), A .