What we knew at the start Microplastics: Typically refer to solid particles (including fibres) made from synthetic polymers < 5mm in size Secondary MPs formed as larger pieces of `plastic' degrade/abrade Litter (SUPs, fishing gear, bottles, nurdles), synthetic clothing, tyre abrasion Primary MPs in various types of products added for achieving specific functionalities Beads, encapsulates, flakes, powders, crumbs 2 Sector-specific impact assessment Quantities and emissions in scope Alternatives and costs to develop them Other costs (e.g. foreseeable profit losses) Cost/effectiveness ratios (comparing substitution cost vs emissions) Sectors very diverse in terms of substitutability Different restriction proposals for sectors (ban, conditional derogations, mandatory instructions, mandatory reporting, grace periods) 5 Overall proportionality argumentation Use volumes and emissions in scope Effectiveness of emission abatement Marginal abatement cost curve Theoretical considerations 8 Marginal abatement cost curve 10 Further theoretical arguments Option value theory `first act, then learn' rather than `first learn, then act' Builds on the justified assumption that emissions are irreversible we will learn a great deal more about the harmfulness of MPs in the environment in the near term future Option value is net value resulting from the avoidance of irreversible emissions conditional on learning about the actual harmfulness of MPs 11 Conclusions Clear definition of MPs has helped us Early identification of sectors/uses has helped us Providing an analysis of restricting infill material during opinion making was tedious Focus on C/E has made impact assessment comparable across uses Benefits hard to quantify, discussed qualitatively Good to have theoretical arguments that underpin proposed actions but did not get a lot of attention 12

GLP10-01-02; Interim Report 07 Analysis of PFBS, PFHS, and PFOS in Water Samples from Decatur, AL June/July 2010 GLP10-01-02: Interim Report 07 - Analysis of PFBS.

Precise Research.

SEVERN TRENT LABORATORIES ANALYTICAL REPORT JOB NUMBER: 239580 Prepared For: Weston Solutions, Inc. 1400 Weston Way Building 5-2 West Chester, PA 19380-1499 Project: Confidential Decatur - FC Investigation Attention: Jai Kesari Date: 09/02/2005 Signature Name: Richard C.

SEVERN TRENT LABORATORIES ANALYTICAL REPORT JOB NUMBER: 244436 Prepared For: Weston Solutions, Inc. 1400 Weston Way Building 5-2 West Chester, PA 19380-1499 Project: Confidential Decatur - FC Investigation Attention: Jai Kesari Date: 03/06/2006 Signature Name: Richard C.

SEVERN TRENT LABORATORIES ANALYTICAL REPORT JOB NUMBER: 245156 Prepared For: Weston Solutions, Inc. 1400 Weston Way Building 5-2 West Chester, PA 19380-1499 Project: Confidential Decatur - FC Investigation Attention: Sue Stefanosky Date: 03/30/2006 Signature Name: Richard C.

SEVERN TRENT LABORATORIES ANALYTICAL REPORT JOB NUMBER: 245781 Prepared For: Weston Solutions, Inc. 1400 Weston Way Building 5-2 West Chester, PA 19380-1499 Project: Confidential Decatur - FC Investigation Attention: Jai Kesari Date: 04/21/2006 Signature Name: Richard C.

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Submitted to: BIOSEARCH, INC.

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06/22/00 T-7098.1 POSF PK 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.

AR226-1030A045 BACK TO MAIN 2=225 POTENTIAL FOR ENVIRONMENTAL IMPACT OF AFA-6 SURFACTANT A Report for: PANARCTIC OILS LTD.

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BACK TO MAIN Centre Analytical Laboratories, Inc. 3048 Research Drive State College, PA 16801 www.centrelab.com ^P h on e : (814)231 -8032 Fax: (814) 231 -1253or (814) 231 -1580 Analytical Report Fluorochemical Characterization of POTW Effluent Cleveland, Tennessee (W1973) Centre Analytical Laboratory Report No. 023-0141 (Revision 1) Revision Date 3/26/01 Testing Laboratory Centre Analytical Laboratory, Inc. 3048 Research Drive State College, PA 16801 3M Environmental Laboratory Contact Kent R.