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Alpha Analytical Laboratories, Inc. email: clientservices@alpha-labs.corn <br />Corporate: 208 Mason Street I Ukiah, CA 95482 I T: 707-468-0401 I F: 707-468-5267 I ELAP# 1551 <br />Shimmick Construction Project Manager: Hagr Balla <br />8201 Edgewater Dr., Suite 202 Project: Smith Canal Reported: <br />Oakland, CA 94621 Project Number: CCR 66261.24 Tables land II 10/15/20 15:17 <br />TCLP Pesticides and PCBs by EPA Method 8081/8082 - Quality Control <br />Analyte(s) Result <br />Reporting <br />Limit Units <br />Spike Source %REC <br />Level Result %REC Limits RP D <br />RPD <br />Limit Flag <br />Batch AJ03294 - EPA 1311 TCLP/3510B <br />Blank (AJ03294-BLK1) Prepared: 10/07/20 Analyzed: 10/09/20 <br />gamma-BHC (Lindane) ND 0.40 mg/L <br />Chlordane (tech) ND 0.030 mg/L <br />Endrin ND 0.020 mg/L <br />Heptachlor ND 0.0080 mg/L <br />Heptachlor epoxide ND 0.0080 mg/L <br />Methoxychlor ND 10 mg/L <br />Toxaphene ND 0.50 mg/L <br />Surrogate: Dibutylchlorendate 0.000370 mg/L 0.000433 85.5 62-152 <br />LCS (AJ03294-BS1) Prepared: 10/07/20 Analyzed: 10/09/20 <br />gamma-BHC (Lindane) 0.000219 0.40 mg/L 0.000240 91.3 69-114 <br />Endrin 0.000263 0.020 mg/L 0.000240 109 72-145 <br />Heptachlor 0.000229 0.0080 mg/L 0.000240 95.3 31-112 <br />Heptachlor epoxide 0.000230 0.0080 mg/L 0.000240 95.9 72-115 <br />Methoxychlor 0.000259 10 mg/L 0.000240 108 35-174 <br />Surrogate: Dibutylchlorendate 0.000412 mg/L 0.000433 95.2 62-152 <br />LCS Dup (AJ03294-BSD1) Prepared: 10/07/20 Analyzed: 10/09/20 <br />gamma-BHC (Lindane) 0.000221 0.40 mg/L 0.000240 92.3 69-114 1.06 20 <br />Endrin 0.000262 0.020 mg/L 0.000240 109 72-145 0.322 20 <br />Heptachlor 0.000231 0.0080 mg/L 0.000240 96.4 31-112 1.12 20 <br />Heptachlor epoxide 0.000231 0.0080 mg/L 0.000240 96.1 72-115 0.181 20 <br />Methoxychlor 0.000253 10 mg/L 0.000240 106 35-174 2.20 20 <br />Surrogate: Dibutylchlorendate 0.000389 mg/L 0.000433 89.9 62-152 <br />The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must be reproduced in its entirety. <br />Page 19 of 23