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Alpha Analytical Laboratories, Inc. email: clientservices@alpha-labs.com <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 Semivolatile Organic Compounds by EPA Method 8270C - Quality Control <br />Reporting Spike Source %REC RPD <br />Analyte(s) <br /> <br />Result Limit Units Level Result %REC Limits RPD Limit Flag <br />Batch AJ03433 - SVOAs in Water GCMS <br />Blank (AJ03433-BLK1) <br />2,4-Dinitrotoluene ND 0.13 mg/L <br />Hexachlorobenzene ND 0.13 mg/L <br />Hexachlorobutadiene ND 0.50 mg/L <br />Hexachloroethane NI) 3.0 mg/L <br />2-Methylphenol (o-cresol) ND 200 me- <br />3 & 4-Methylphenol (m & p-cresol) ND 200 mei- <br />Methylphenol (Cresols), Total ND 200 mg/L <br />Nitrobenzene ND 2.0 mg/L <br />Pentachlorophenol ND 100 mg/L <br />Pyridine ND 5.0 mg/L <br />2,4,5-Trichlorophenol ND 400 m8/1- <br />2,4,6-Trichlorophenol ND 2.0 mg/L <br />Prepared: 10/08/20 Analyzed: 10/15/20 <br /> <br />Surrogate: 2-Fluorobiphenyl 0.0339 mg/L 0.0400 84.7 27-119 <br />Surrogate: 2-Fluorophenol 0.0252 mg/L 0.0400 62.9 7-85 <br />Surrogate: Nitrobenzene-d5 0.0365 mg/L. 0.0400 91.3 15-314 <br />Surrogate: p-Tepphenyl-d14 0.0416 mg/I, 0.0400 104 36-141 <br />Surrogate: Phenol-d6 0.0143 mg/L 0.0400 35.8 1-65 <br />Surrogate: 2,4,6-Tribromophenol 0.0368 mg/L 0.0400 91.9 4-168 <br />LCS (AJ03433-BSI) Prepared: 10/08/20 Analyzed: 10/14/20 <br />2,4-Dinitrotoluene 0.0348 0.13 mg/L 0.0400 87.0 48-127 <br />Hexachlorobenzene 0.0339 0.13 mg/L 0.0400 84.7 8-142 <br />Hexachlorobutadiene 0.0300 0.50 mg/L 0.0400 74.9 38-120 <br />Hexachloroethane 0.0279 3.0 mg/L 0.0400 69.8 55-120 <br />2-Methylphenol (o-cresol) 0.0220 200 mg/L 0.0400 55.0 36-102 <br />3 & 4-Methylphenol (m & p-cresol) 0.0212 200 ma, 0.0400 52.9 38-93 <br />Nitrobenzene 0.0309 2.0 mg/L 0.0400 77.4 54-158 <br />Pentachlorophenol 0.0274 100 mg/L 0.0400 68.4 38-152 <br />Pyridine 0.00687 5.0 mg/L 0.0400 17.2 15-95 <br />2,4,5-Trichlorophenol 0.0270 400 mg/L 0.0400 67.6 44-141 <br />2,4,6-Trichlorophenol 0.0252 2.0 mg/L 0.0400 63.0 52-129 <br />Surrogate: 2-Fluorobiphenyl 0.0386 mg/L 0.0400 96.5 27-119 <br />Surrogate: 2-Fluorophenol 0.0193 mg/L 0.0400 48.2 7-85 <br />Surrogate: Nitrobenzene-d5 0.0361 mg/L 0.0400 90.2 15-314 <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 entirely. <br />Page 21 of 23