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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 - 02/23/2021 <br />GC40 <br />Soil <br />91-57962-PW; FUHSD <br />WorkOrder: <br />BatchID: <br />Extraction Method: <br />Analytical Method: <br />Unit: <br />Sample ID: <br />2102A42 <br />215598 <br />SW3550B <br />SW8081A/8082 <br />mg/kg <br />MB/LCS/LCSD-215598 <br />2102A42-001AMS/MSD <br />QC Summary Report for SW8081A/8082 <br />Analyte LCS LCSD SPK LCS LCSD LCS/LCSD RPD RPD <br />Result Result Val %REC %REC Limits Limit <br />Aldrin 0.0588 0.0584 0.050 118 117 70-130 0.736 20 <br />20 <br />20 <br />20 <br />20 <br />a-BHC 0.0557 0.0554 0.050 111 111 70-130 0.595 <br />b-BHC 0.0652 0.0638 0.050 130 127 70-130 2.17 <br />d-BHC 0.0623 0.0616 0.050 125 123 70-130 1.21 <br />g-BHC 0.0597 0.0593 0.050 119 119 70-130 0.667 <br />a-Chlordane 0.0572 0.0571 0.050 114 114 70-130 0.138 20 <br />g-Chlordane 0.0553 0.0552 0.050 111 110 70-130 0.185 20 <br />p,p-DDD 0.0622 0.0613 0.050 124 123 70-130 1.42 20 <br />pp-DDE 0.0601 0.0596 0.050 120 119 70-130 0.795 20 <br />p,p-DDT 0.0593 0.0584 0.050 119 117 70-130 1.66 20 <br />Dieldrin 0.0643 0.0641 0.050 129 128 70-130 0.274 20 <br />Endosulfan I 0.0589 0.0594 0.050 118 119 70-130 0.761 20 <br />Endosulfan II 0.0576 0.0567 0.050 115 113 70-130 1.51 20 <br />Endosulfan sulfate 0.0588 0.0584 0.050 118 117 70-130 0.663 20 <br />Endrin 0.0672 0.0669 0.050 134,F2 134,F2 70-130 0.404 20 <br />Endrin aldehyde 0.0578 0.0579 0.050 116 116 70-130 0.0453 20 <br />Endrin ketone 0.0603 0.0602 0.050 121 120 70-130 0.223 20 <br />Heptachlor 0.0646 0.0638 0.050 129 128 70-130 1.31 20 <br />Heptachlor epoxide 0.0551 0.0551 0.050 110 110 70-130 0.0646 20 <br />Hexachlorobenzene 0.0522 0.0520 0.050 104 104 70-130 0.442 20 <br />Hexachlorocyclopentadiene 0.0379 0.0373 0.050 76 75 50-130 1.50 20 <br />Methoxychlor 0.0592 0.0586 0.050 118 117 70-130 1.05 20 <br />Aroclor1016 0.154 0.154 0.15 102 102 70-130 0.116 20 <br />Aroclor1260 0.151 0.159 0.15 100 106 70-130 5.31 20 <br />Surrogate Recovery <br />Decachlorobiphenyl 0.0523 0.0522 0.050 105 104 70-130 0.243 20 <br />Analyte MS <br />DF <br />MS <br />Result <br />MSD <br />Result <br />SPK <br />Val <br />SPKRef <br />Val <br />MS <br />%REC <br />MSD <br />%REC <br />MS/MSD <br />Limits <br />RPD RPD <br />Limit <br />Aldrin 1 0.0540 0.0508 0.050 ND 108 102 60-130 6.00 20 <br />a-BHC 1 0.0560 0.0520 0.050 ND 112 104 60-130 7.50 20 <br />b-BHC 1 0.0599 0.0562 0.050 ND 120 112 60-130 6.39 20 <br />d-BHC 1 0.0587 0.0549 0.050 ND 117 110 60-130 6.67 20 <br />g-BHC 1 0.0562 0.0525 0.050 ND 112 105 60-130 6.84 20 <br />a-Chlordane 1 0.0516 0.0488 0.050 ND 103 98 60-130 5.37 20 <br />g-Chlordane 1 0.0502 0.0476 0.050 ND 100 95 60-130 5.27 20 <br />(Cont.) <br />CA ELAP 1644 • NELAP 40330RELAP <br />Page 43 of 68