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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 9 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 />LCS (2104110-BS1)Prepared & Analyzed: 05/19/21 <br />g/kg 8.33 52-141Surrogate: Decachlorobiphenyl 12410.3 <br />LCS Dup (2104110-BSD1)Prepared & Analyzed: 05/19/21 <br />Aldrin g/kg15.7 1.0 16.7 3047-13294 12 <br />gamma-BHC (Lindane)"15.5 1.7 16.7 3056-13393 15 <br />4,4·-DDT "18.0 3.3 16.7 3046-137108 5 <br />Dieldrin "17.6 1.0 16.7 3044-143105 6 <br />Endrin "17.9 3.3 16.7 3030-147108 12 <br />Heptachlor "15.2 1.7 16.7 3033-14891 13 <br />"8.33 46-139Surrogate: Tetrachloro-meta-xylene 806.70 <br />"8.33 52-141Surrogate: Decachlorobiphenyl 1169.70 <br />Matrix Spike (2104110-MS1)QRL-8Prepared & Analyzed: 05/19/21 Source: 21E0992-09 <br />Aldrin g/kg15.0 5.0 16.7 ND 47-13890 <br />gamma-BHC (Lindane)"15.1 8.5 16.7 ND 38-14491 <br />4,4·-DDT "28.6 17 16.7 14.0 41-15788 <br />Dieldrin "27.7 5.0 16.7 13.1 46-15588 <br />Endrin "18.0 17 16.7 ND 34-149108 <br />Heptachlor "18.0 8.5 16.7 ND 36-155108 <br />"20.8 46-139Surrogate: Tetrachloro-meta-xylene 6413.2 <br />"20.8 52-141Surrogate: Decachlorobiphenyl 8317.3 <br />Matrix Spike Dup (2104110-MSD1)QRL-8Prepared & Analyzed: 05/19/21 Source: 21E0992-09 <br />Aldrin g/kg12.5 5.0 16.7 ND 3547-13875 18 <br />gamma-BHC (Lindane)"12.5 8.5 16.7 ND 3538-14475 19 <br />4,4·-DDT "20.1 17 16.7 14.0 35 QM-741-15737 35 <br />Dieldrin "24.0 5.0 16.7 13.1 3546-15565 14 <br />Endrin "15.0 17 16.7 ND 3534-14990 19 <br />Heptachlor "14.3 8.5 16.7 ND 3536-15586 23 <br />"20.8 46-139Surrogate: Tetrachloro-meta-xylene 5611.6 <br />"20.8 52-141Surrogate: Decachlorobiphenyl 7114.7 <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 10 of 11