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0 SunStar Laboratories, Inc. PROVIDING QUALITY ANALYTICAL SERVICES NATIONWIDE 25712 Commercentre Drive Lake Forest, California 92630 949.297.5020 Phone 949.297.5027 Fax Brusca Associates Inc. Project: Lathrop 48 Acre Property PO Box 332 Project Number: 137-002 Reported: Roseville CA, 95661 Project Manager: Joe Brusca 05/16/17 12:00 Extractable Petroleum Hydrocarbons by 8015B - Quality Control SunStar Laboratories, Inc. Reporting Spike Source °/oREC RPD tnalyte Result MDL Limit Units Level Result %REC Limits RPD Limit Notes Batch 7042826 - EPA 3510C GC Blank (7042826-BLKI) Prepared: 04/28/17 Analyzed: 05/01/17 Surrogate: p-Terphenyl 2.62 mg/l 4.00 65.5 65-135 C6 -C 12 (GRO) ND 0.50 " C13-C28(DRO) ND 0.50 " C29 -C40 (MORO) ND 0.50 LCS (7042826 -BSI) Prepared: 04/28/17 Analyzed: 05/02/17 Surrogate: p-Terphenyl 3.56 mg/1 4.00 891 65-135 C13-C28(DRO) 20.1 0.50 " 20.0 101 75-125 LCS Dup (7042826-BSDI) Prepared: 04/28/17 Analyzed: 05/02/17 Surrogate: p-Terphenyl 3.74 m9/1 4.00 93.5 65-135 C13 -C28 (DRO) 19.6 0.50 20.0 98.2 75-125 2.33 20 Batch 7042840 - EPA 3550B GC Blank (7042840-BLKI) Prepared: 04/28/17 Analyzed: 05/02/17 Surrogate: p-Terphenyl 89.4 mg/kg 99.0 90.3 65-135 C6 -C12 (GRO) ND 10 " C13 -C28 (DRO) ND 10 " C29 -C40 (MORO) ND 10 " LCS (7042840-BSl) Prepared: 04/28/17 Analyzed: 05/02/17 Surrogate: p-Terphenyl 79.0 mg/kg 102 77.4 65-135 C13-C28(DRO) 490 10 510 96.4 75-125 Matrix Spike (7042840 -MSI) Source: T171074-06 Prepared: 04/28/17 Analyzed: 05/02/17 Surrogate: p-Terphenyl 116 mg/kg 99.0 117 65-135 C13-C28(DRO) 630 10 " 495 120 102 75-125 SunStar Laboratories, Inc. 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. Page 74 of 94