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/—\.* McCampbell Analytical, Inc. Isetai <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 "When Quality Counts" <br />Quality Control Report <br />Client: Clean Harbors WorkOrder: 2105D11 <br />Date Prepared: 05/25/2021 BatchID: 222146 <br />Date Analyzed: 05/25/2021 Extraction Method: SW3550B <br />Instrument: GC9b Analytical Method: SW8015B <br />Matrix: Soil Unit: mg/Kg <br />Project: 2102012547; LATHROP MANTECA FIRE DIST. Sample ID: MB/LCS/LCSD-222146 <br />QC Report for SW8015B w/out SG Clean-Up <br />Analyte MB MDL RL SPK MB SS MB SS <br />Result Val %REC Limits <br />TPH-Diesel (C10-C23) ND 0.750 1.00 <br />TPH-Motor Oil (C18-C36) ND 3.90 5.00 <br />Surrogate Recovery <br />C9 21.4 25 86 70-130 <br />Analyte LCS LCSD SPK LCS LCSD LCS/LCSD RPD RPD <br />Result Result Val %REC %REC Limits Limit <br />TPH-Diesel (C10-C23) 37.2 36.6 40 93 91 70-130 1.77 20 <br />Surrogate Recovery <br />C9 21.1 21.0 25 84 84 70-130 0.260 20 <br />CA ELAP 1644 • NELAP 40330RELAP <br />Page 9 of 13