3 GLP10-01-02 Interim Report 15: Analysis for PFOS, PFHS and PFBS in Decatur, AL Avenue A Soils and Sediments Collected January 2011 Study Title 3M Environmental Laboratory Analytical Protocol GLP-10-01-02: Analysis of Perfluorooctane Sulfonate (PFOS), Perfluorohexane Sulfonate (PFHS) and Perfluorobutane Sulfonate (PFBS) in Groundwater, Soil and Sediment for the 3M Decatur Phase 3 Site-Related Monitoring Program Data Requirement EPA TSCA Good Laboratory Practice Standards 40 CFR Part 792 Study Director Jaisimha Kesari P.E., DEE Weston Solutions, Inc. 1400 Weston Way West Chester, PA 19380 Phone: 610-701-3761 Principal Analytical Investigator Cleston C.

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CHAIN OF CUSTODY / ANALYSIS REQUEST FORM Tuscaloosa Testing Laboratory T: 256-353-2910 PAGE 1 of 6 PROJECT INFORMATION Client: Weston Solutions, Inc. 1400 Weston Way, Bldg. 5-2 West Chester, PA 19380 T: 610-701-3761 F: 610-701-7401 Project Manager: Jai Kesari email: i.kesari(westonsolutions.com Project Name: Reference No: Decatur, AL FS IA GP Investigation 02181-129-081-0001 ANALYSES REQUESTED Sampler: T.

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TRINITY BUILDING FILE 3 - BREEZE ISC SUITE ** BUILDING BLD 0 0 191.6 5.1 10 ** BUILDING IDN Bldg184 ** BUILDING NAM Bidg184 ** BUILDING CRN 441771.4 4346765.4 ** BUILDING CRN 441771.7 4346765.1 ** BUILDING CRN 441807.6 4346771.6 ** BUILDING CRN 441818.1 4346711.4 * BUILDING CRN 441812.8 4346710.8 * BUILDING CRN 441812.5 4346715.5 '* BUILDING CRN 441799.7 4346713.2 * BUILDING CRN 441797.9 4346723.1 * BUILDING CRN 441782.7 4346720.2 '* BUILDING CRN 441772.5 4346766.3 " BUILDING BLD 0 0 200.8 6.6 18 ** BUILDING IDN Bldg208 "* BUILDING NAM Bldg208 " BUILDING CRN 441837.4 4346545.5 * BUILDING CRN 441864.2 4346550.5 ** BUILDING CRN 441865.1 4346547.0 ** BUILDING CRN 441910.7 4346554.9 BUILDING CRN 441909.5 4346560.7 ** BUILDING CRN 441966.5 4346571.5 ** BUILDING CRN 441973.2 4346535.0 ** BUILDING CRN 441889.4 4346519.5 ** BUILDING CRN 441890.8 4346509.9 ** BUILDING CRN 441872.1 4346507.0 ** BUILDING CRN 441871.0 4346516.6 ** BUILDING CRN 441857.8 4346514.3 ** BUILDING CRN 441853.7 4346537.1 ** BUILDING CRN 441874.8 4346541.7 ** BUILDING CRN 441874.2 4346543.8 ** BUILDING CRN 441838.8 4346537.6 ** BUILDING CRN 441837.7 4346545.5 ** BUILDING CRN 441837.7 4346545.5 ** BUILDING BLD 0 0 194.2 5.9 8 ** BUILDING IDN Bldg204 ** BUILDING NAM Bldg204 ** BUILDING CRN 441828.5 4346609.0 ** BUILDING CRN 441857.4 4346614.6 ** BUILDING CRN 441856.5 4346618.7 " BUILDING CRN 441864.7 4346620.1 ** BUILDING CRN 441867.9 4346604.4 ** BUILDING CRN 441830.5 4346597.1 ** BUILDING CRN 441828.5 4346609.0 ** BUILDING CRN 441828.5 4346609.0 ** BUILDING BLD 0 0 196.5 10.5 5 ** BUILDING IDN Bldg210 ** BUILDING NAM Bldg201 ** BUILDING CRN 441729.7 4346552.6 ** BUILDING CRN 441738.4 4346553.8 ** BUILDING CRN 441740.8 4346542.7 ** BUILDING CRN 441732.0 4346540.9 ** BUILDING CRN 441730.3 4346553.2 ** BUILDING BLD 0 0 196.9 9.11 11 AR226-2172 EID420100 'BUILDING IDN Bldg325a 'BUILDING NAM Bldg325a BUILDING CRN 441656.8 4346577.6 'BUILDING CRN 441678.1 4346581.1 'BU ILD IN G CRN 441682.8 4346555.7 'BU ILD IN G CRN 441678.7 4346554.8 'BU ILD IN G CRN 441677.3 4346561.5 'BU ILD IN G CRN 441666.8 4346559.7 'BU ILD IN G CRN 441665.9 4346563.3 'BU ILD IN G CRN 441661.8 4346562.7 'BU ILD IN G CRN 441660.3 4346568.2 'BU ILD IN G CRN 441658.3 4346567.6 * BUILDING CRN 441656.8 4346577.3 * BUILDING BLD 0 0 188 8.1 5 'B U ILD IN G IDN Bldg21 'B U ILD IN G NAM Bldg21 'B U ILD IN G CRN 442001.9 4346620.1 'B U ILD IN G CRN 442018.8 4346624.2 'B U ILD IN G CRN 442022.3 4346606.6 'B U ILD IN G CRN 442004.8 4346603.1 'B U ILD IN G CRN 442001.9 4346621.2 'B U ILD IN G BLD 0 0 200.5 7.5 5 'B U ILD IN G IDN Bldg6 'B U ILD IN G NAM Bldg6 BUILDING CRN 442146.1 4346522.5 BUILDING CRN 442202.2 4346530.7 BUILDING CRN 442205.7 4346512.6 BUILDING CRN 442148.5 4346503.3 BUILDING CRN 442145.0 4346521.9 BUILDING BLD 0 0 190.6 6.1 23 BUILDING IDN Bldg3 BUILDING NAM B!