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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: Atlas Technical Consultants <br />Date Prepared: 02/18/2021 <br />Date Analyzed: 02/18/2021 <br />Instrument: GC18 <br />Matrix: Soil <br />Project: 91-57962-PW; FUHSD <br />WorkOrder: 2102A42 <br />BatchID: 215583 <br />Extraction Method: SW5030B <br />Analytical Method: SW8260B <br />Unit: mg/kg <br />Sample ID: MB/LCS/LCSD-215583 <br />QC Summary Report for SW8260B <br />Analyte LCS <br />Result <br />LCSD <br />Result <br />SPK <br />Val <br />LCS <br />%IREC <br />LCSD <br />%REC <br />LCS/LCSD <br />Limits <br />RPD RPD <br />Limit <br />cis-1,3-Dichloropropene 0.0194 0.0202 0.020 97 101 60-140 4.25 20 <br />trans-1,3-Dichloropropene 0.0208 0.0216 0.020 104 108 60-140 4.14 20 <br />Diisopropyl ether (DIPE) 0.0166 0.0174 0.020 83 87 60-140 4.80 20 <br />Ethylbenzene 0.0185 0.0197 0.020 93 98 60-140 6.11 20 <br />Ethyl tert-butyl ether (ETBE) 0.0172 0.0179 0.020 86 90 60-140 4.24 20 <br />Freon 113 0.0110 0.0119 0.020 55 59 50-140 7.34 20 <br />Hexachlorobutadiene 0.0182 0.0189 0.020 91 94 60-140 3.76 20 <br />Hexachloroethane 0.0179 0.0192 0.020 89 96 60-140 7.11 20 <br />2-Hexanone 0.0186 0.0167 0.020 93 84 40-140 10.9 20 <br />lsopropylbenzene 0.0203 0.0223 0.020 102 112 60-140 9.55 20 <br />4-Isopropyl toluene 0.0211 0.0231 0.020 105 115 60-150 8.94 20 <br />Methyl-t-butyl ether (MTBE) 0.0179 0.0184 0.020 89 92 50-140 3.05 20 <br />Methylene chloride 0.0188 0.0202 0.020 94 101 60-140 6.87 20 <br />4-Methyl-2-pentanone (MIBK) 0.0178 0.0159 0.020 89 80 50-140 11.0 20 <br />Naphthalene 0.0162 0.0106 0.020 81 53 30-140 42.1,F2 20 <br />n-Propyl benzene 0.0207 0.0221 0.020 103 110 60-140 6.56 20 <br />Styrene 0.0156 0.0163 0.020 78 81 60-140 4.24 20 <br />1,1,1,2-Tetrachloroethane 0.0167 0.0173 0.020 84 86 60-140 3.08 20 <br />1,1,2,2-Tetrachloroethane 0.0175 0.0178 0.020 87 89 40-140 1.73 20 <br />Tetrachloroethene 0.0166 0.0176 0.020 83 88 60-140 5.62 20 <br />Toluene 0.0181 0.0191 0.020 91 95 60-140 5.16 20 <br />1,2,3-Trichlorobenzene 0.0151 0.0116 0.020 75 58 40-140 26.1,F2 20 <br />1,2,4-Trichlorobenzene 0.0157 0.0143 0.020 78 71 50-140 9.25 20 <br />1,1,1-Trichloroethane 0.0155 0.0168 0.020 77 84 60-140 8.19 20 <br />1,1,2-Trichloroethane 0.0178 0.0185 0.020 89 93 60-140 4.00 20 <br />Trichloroethene 0.0161 0.0176 0.020 81 88 60-140 8.69 20 <br />Trichlorofluoromethane 0.0116 0.0126 0.020 58 63 50-140 8.11 20 <br />1,2,3-Trichloropropane 0.00947 0.00961 0.010 95 96 40-140 1.47 20 <br />1,2,4-Trimethylbenzene 0.0199 0.0212 0.020 100 106 30-140 6.45 20 <br />1,3,5-Trimethylbenzene 0.0200 0.0218 0.020 100 109 60-140 8.79 20 <br />Vinyl Chloride 0.00742 0.00795 0.010 74 80 30-140 6.91 20 <br />m,p-Xylene 0.0341 0.0359 0.040 85 90 60-140 5.19 20 <br />o-Xylene 0.0173 0.0184 0.020 87 92 60-140 5.87 20 <br />(Cont.) <br />CA ELAP 1644 • NELAP 40330RELAP <br />Page 49 of 68