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7.-41 McCampbell Analytical, Inc. ctiefrw "When Quality Counts" <br />1534 Willow Pass Road, Pittsburg, CA 94565-1701 <br />Toll Free Telephone: (877) 252-9262 / Fax: (925) 252-9269 <br />http://www.mccampbell.com / E-mail: main@mccampbell.com <br /> <br />Quality Control Report <br />Client: Clean Harbors WorkOrder: 2105D11 <br />Date Prepared: 05/25/2021 BatchID: 222135 <br />Date Analyzed: 05/25/2021 - 05/26/2021 Extraction Method: SW5035 <br />Instrument: GC7 Analytical Method: SW8021B/8015Bm <br />Matrix: Soil Unit: mg,/Kg <br />Project: 2102012547; LATHROP MANTECA FIRE DIST. Sample ID: MB/LCS/LCSD-222135 <br />QC Summary Report for SW8021B/8015Bm <br />Analyte MB <br />Result <br />MDL RL SPK <br />Val <br />MB SS <br />VoREC <br />MB SS <br />Limits <br />TPH(g) (C6-C12) ND 0.610 1.00 <br />MTBE ND 0.00340 0.0500 <br />Benzene ND 0.00190 0.00500 <br />Toluene ND 0.00240 0.00500 <br />Ethylbenzene ND 0.00170 0.00500 <br />m,p-Xylene ND 0.00260 0.0100 <br />o-Xylene ND 0.000910 0.00500 <br />Surrogate Recovery <br />2-Fluorotoluene 0.0906 0.1 91 75-134 <br />Analyte LCS <br />Result <br />LCSD <br />Result <br />SPK <br />Val <br />LCS <br />% REC <br />LCSD <br />%REC <br />LCS/LCSD <br />Limits <br />RPD RPD <br />Limit <br />TPH(btex) 0.651 0.661 0.60 108 110 82-118 1.48 20 <br />MTBE 0.104 0.105 0.10 104 105 61-119 1.16 20 <br />Benzene 0.103 0.0994 0.10 103 99 77-128 3.40 20 <br />Toluene 0.105 0.102 0.10 105 102 74-132 3.26 20 <br />Ethylbenzene 0.104 0.100 0.10 104 100 84-127 3.03 20 <br />m,p-Xylene 0.217 0.215 0.20 109 108 80-120 0.961 20 <br />o-Xylene 0.102 0.0996 0.10 103 100 80-120 2.90 20 <br />Surrogate Recovery <br />2-Fluorotoluene 0.0947 0.0920 0.10 95 92 75-134 2.93 20 <br />CA ELAP 1644 • NELAP 40330RELAP <br />Page 8 of 13