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GeoAnalytical Laboratories, Inc. <br />2300 Maryann Dr. Turlock, CA 95380 Phone (209) 669-0100 Fax(209)593-2212 <br />email: infongeoanalyticallab.com <br />t,- ; art # 12F3009 Project: AM/PM Fueling Station - 7500 West 11th St. Tracy Date: 07/13/22 <br />Blackwater Management Group LLC Date Rec'd: 06/30/22 <br />2605 Camino Tassajara Rd # 1582 <br />Danville, CA 94526 <br />Inorganic Chemistry - Quality Control <br />GeoAnalytical Laboratories, Inc. <br />Reporting Spike Source %REC RPI) <br />Analyte Result Limit Units Level Result %REC limits RPD Limit Notes <br />Batch 1001707 - 300.0 - NO PREP <br />Prepared & Analyzed: 06/30/22 <br />Matrix Spike (1001707 -MSI) <br />Source: 12F3007-01 <br />Fluoride <br />5.11 0.20 mg/1. <br />5.000 <br />ND <br />102 <br />80-120 <br />Nitrate as N <br />21.2 0.80 <br />20.00 <br />1.60 <br />98 <br />85-115 <br />Nitrite as N <br />9.97 0.80 <br />10.00 <br />ND <br />100 <br />85-115 <br />Matrix Spike Dup (1001707-MSDI) <br />Source: 12F3007-01 <br />Fluoride <br />5.07 0.20 mg/I. <br />5.000 <br />ND <br />101 <br />80-120 0.8 <br />20 <br />Nitrate as N <br />21.1 0.80 <br />20.00 <br />1.60 <br />98 <br />85-115 0.6 <br />20 <br />Nitrite as N <br />9.91 0.80 <br />10.00 <br />ND <br />99 <br />85-115 0.6 <br />20 <br />Batch 1001734 - 200.8 - NONE <br />Prepared: 07/06/22 <br />Analyzed: 07/07/22 <br />(1001734-B L K I ) <br />lrw. <br />ND 100 ug/L <br />LCS (1001734 -BSI) <br />Iron <br />120 100 ug/I. <br />125.0 <br />96 <br />85-115 <br />LCS Dup (1001734-BSDI) <br />Iron <br />120 100 ug/L <br />125.0 <br />96 <br />85-115 0.1 <br />20 <br />Duplicate (1001734-DUP1) <br />Source: 12F2001-08 <br />Iron <br />19.2 100 ug/l. <br />19.3 <br />0.4 <br />20 <br />Duplicate (1001734-DUP2) <br />Source: 12F2105-01 <br />Iron <br />32.5 100 ug/L <br />32.2 <br />1 <br />20 <br />Matrix Spike (1001734 -MSI) <br />Source: 12F2001-08 <br />Iron <br />167 100 ug/L <br />125.0 <br />19.3 <br />118 <br />70-130 <br />Matrix Spike (100 1 734-MS2) <br />Source: 12F2105-01 <br />Iron <br />189 100 ug/L. <br />125.0 <br />32.2 <br />125 <br />70-130 <br />Certification 4 2585 <br />