## ANALYTICAL REPORT TestAmerica Laboratories, Inc. TestAmerica Chicago 2417 Bond Street University Park, IL 60484 Tel:(708)534-5200 TestAmerica Job ID: 500-89685-3 Client Project/Site: John Deere Des Moines Works Delisting Revision: 1 For: MWH Americas Inc 11153 Aurora Avenue Des Moines, Iowa 50322-7904

Attn: Mr. Robert Malcomson

Authorized for release by: 1/26/2015 2:24:58 PM Therese Hargraves, Project Manager I (708)534-5200 therese.hargraves@testamericainc.com

The test results in this report meet all 2003 NELAC and 2009 TNI requirements for accredited parameters, exceptions are noted in this report. This report may not be reproduced except in full, and with written approval from the laboratory. For questions please contact the Project Manager at the e-mail address or telephone number listed on this page. This report has been electronically signed and authorized by the signatory. Electronic signature is intended to be the legally binding equivalent of a traditionally handwritten signature. Results relate only to the items tested and the sample(s) as received by the laboratory. 1 2 3 4 5 6 7 8 9 10 11 12 13 14

# Table of Contents Client: MWH Americas Inc Project/Site: John Deere Des Moines Works Delisting TestAmerica Job ID: 500-89685-3

Page 2 of 32 TestAmerica Chicago 1/26/2015 Cover Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Case Narrative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Detection Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Method Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Sample Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Client Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 QC Association . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 QC Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19 Chronicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24 Certification Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27 Chain of Custody . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28 Receipt Checklists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31 1 2 3 4 5 6 7 8 9 10 11 12 13 14Page 3 of 32 1/26/2015 1 2 3 4 5 6 7 8 9 10 11 12 13 14Page 4 of 32 1/26/2015 1 2 3 4 5 6 7 8 9 10 11 12 13 14Page 5 of 32 1/26/2015 1 2 3 4 5 6 7 8 9 10 11 12 13 14Page 6 of 32 1/26/2015 1 2 3 4 5 6 7 8 9 10 11 12 13 14Page 7 of 32 1/26/2015 1 2 3 4 5 6 7 8 9 10 11 12 13 14Page 8 of 32 1/26/2015 1 2 3 4 5 6 7 8 9 10 11 12 13 14Page 9 of 32 1/26/2015 1 2 3 4 5 6 7 8 9 10 11 12 13 14Page 10 of 32 1/26/2015 1 2 3 4 5 6 7 8 9 10 11 12 13 14Page 11 of 32 1/26/2015 1 2 3 4 5 6 7 8 9 10 11 12 13 14Page 12 of 32 1/26/2015 1 2 3 4 5 6 7 8 9 10 11 12 13 14Page 13 of 32 1/26/2015 1 2 3 4 5 6 7 8 9 10 11 12 13 14Page 14 of 32 1/26/2015 1 2 3 4 5 6 7 8 9 10 11 12 13 14Page 15 of 32 1/26/2015 1 2 3 4 5 6 7 8 9 10 11 12 13 14Page 16 of 32 1/26/2015 1 2 3 4 5 6 7 8 9 10 11 12 13 14Page 17 of 32 1/26/2015 1 2 3 4 5 6 7 8 9 10 11 12 13 14Page 18 of 32 1/26/2015 1 2 3 4 5 6 7 8 9 10 11 12 13 14Page 19 of 32 1/26/2015 1 2 3 4 5 6 7 8 9 10 11 12 13 14Page 20 of 32 1/26/2015 1 2 3 4 5 6 7 8 9 10 11 12 13 14Page 21 of 32 1/26/2015 1 2 3 4 5 6 7 8 9 10 11 12 13 14Page 22 of 32 1/26/2015 1 2 3 4 5 6 7 8 9 10 11 12 13 14Page 23 of 32 1/26/2015 1 2 3 4 5 6 7 8 9 10 11 12 13 14Page 24 of 32 1/26/2015 1 2 3 4 5 6 7 8 9 10 11 12 13 14Page 25 of 32 1/26/2015 1 2 3 4 5 6 7 8 9 10 11 12 13 14Page 26 of 32 1/26/2015 1 2 3 4 5 6 7 8 9 10 11 12 13 14Page 27 of 32 1/26/2015 1 2 3 4 5 6 7 8 9 10 11 12 13 14Page 28 of 32 1/26/2015 1 2 3 4 5 6 7 8 9 10 11 12 13 14Page 29 of 32 1/26/2015 1 2 3 4 5 6 7 8 9 10 11 12 13 14Page 30 of 32 1/26/2015 1 2 3 4 5 6 7 8 9 10 11 12 13 14Page 31 of 32 1/26/2015 1 2 3 4 5 6 7 8 9 10 11 12 13 14Page 32 of 32 1/26/2015 1 2 3 4 5 6 7 8 9 10 11 12 13 14