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McCampbell Analytical, Inc. <br />"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: <br />Date Prepared: <br />Date Analyzed: <br />Instrument: <br />Matrix: <br />Project: <br />Atlas Technical Consultants <br />02/18/2021 <br />02/19/2021 - 02/20/2021 <br />GC19, GC7 <br />Soil <br />91-57962-PW; FUHSD <br />WorkOrder: 2102A42 <br />BatchID: 215581 <br />Extraction Method: SW5035 <br />Analytical Method: SW8021B/8015Bm <br />Unit: mg/Kg <br />Sample ID: MB/LCS/LCSD-215581 <br />QC Summary Report for SW8021B/8015Bm <br />Analyte MB <br />Result <br />MDL RL SPK <br />Val <br />MB SS <br />%REC <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 0.0892 0.1 89 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) 0.671 0.660 0.60 112 110 82-118 1.59 20 <br />MTBE 0.0699 0.0733 0.10 70 73 61-119 4.81 20 <br />Benzene 0.0970 0.103 0.10 97 103 77-128 5.95 20 <br />Toluene 0.101 0.110 0.10 101 110 74-132 8.36 20 <br />Ethylbenzene 0.106 0.113 0.10 106 113 84-127 6.14 20 <br />m,p-Xylene 0.220 0.228 0.20 110 114 80-120 3.52 20 <br />o-Xylene 0.105 0.109 0.10 105 109 80-120 3.71 20 <br />Surrogate Recovery <br />2-Fluorotoluene 0.0925 0.0979 0.10 92 98 75-134 5.74 20 <br />(Cont.) <br />CA ELAP 1644 • NELAP 40330RELAP <br />Page 59 of 68