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Project: <br />Project Number: <br />Project Manager: <br />ENGEO-Lathrop <br />17278 Golden Valley Parkway <br />Oakwood Shores - Area 1 <br />12921.000.003 <br />Victoria Drake <br />05/25/21 09:10 <br />Lathrop, CA 95330 <br />CLS Work Order #: 21E1113 <br />COC #: <br />Page 8 of 10 <br />Result Limit <br />Reporting <br />Units Level <br />Spike <br />Result <br />Source <br />%REC <br />%REC <br />Limits RPD <br />RPD <br />Limit Notes Analyte <br />Organochlorine Pesticides by EPA Method 8081A - Quality Control <br />Batch 2104110 - LUFT-DHS GCNV <br />Blank (2104110-BLK1)Prepared & Analyzed: 05/19/21 <br />Aldrin g/kgND1.0 <br />alpha-BHC "ND 1.7 <br />beta-BHC "ND 1.7 <br />gamma-BHC (Lindane)"ND 1.7 <br />delta-BHC "ND 1.7 <br />Chlordane-technical "ND 3.3 <br />4,4·-DDD "ND 3.3 <br />4,4·-DDE "ND 3.3 <br />4,4·-DDT "ND 3.3 <br />Dieldrin "ND 1.0 <br />Endosulfan I "ND 1.7 <br />Endosulfan II "ND 3.3 <br />Endosulfan sulfate "ND 3.3 <br />Endrin "ND 3.3 <br />Endrin aldehyde "ND 3.3 <br />Heptachlor "ND 1.7 <br />Heptachlor epoxide "ND 1.7 <br />Methoxychlor "ND 17 <br />Mirex "ND 3.3 <br />Toxaphene "ND 20 <br />"8.33 46-139Surrogate: Tetrachloro-meta-xylene 574.71 <br />"8.33 52-141Surrogate: Decachlorobiphenyl 937.71 <br />LCS (2104110-BS1)Prepared & Analyzed: 05/19/21 <br />Aldrin g/kg13.9 1.0 16.7 47-13284 <br />gamma-BHC (Lindane)"13.4 1.7 16.7 56-13380 <br />4,4·-DDT "17.2 3.3 16.7 46-137103 <br />Dieldrin "16.5 1.0 16.7 44-14399 <br />Endrin "16.0 3.3 16.7 30-14796 <br />Heptachlor "13.3 1.7 16.7 33-14880 <br />"8.33 46-139Surrogate: Tetrachloro-meta-xylene 725.99 <br />3249 Fitzgerald Road, Rancho Cordova, CA 95742 | 800.638.7301 | Tel: 916.638.7301 x102 | Fax: 916.638.4510 | www.californialab.com <br />Small Business #2916 | ELAP #1233 | NAICS #541380 | CA SWRCB ELAP Accreditation /Registration Number 1233 Page 9 of 11