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1534 Willow Pass Road, Pittsburg, CA 94565-1701 <br />_ M c C a m p b e I l Analytical , Inc . Toll Free Tcicphonc: (877) 252-9262 / Fax: (925) 252-9269 <br />ve' "When Quality Counts" http://www.mccainpbell.com / E-mail: main(idmccampbcll.com <br />QC Summary Report for E300.1 <br />Analyte MB MDL RL SPK MB SS MB SS <br />Result Val %REC Limits <br />Nitrate as N <br />Nitrate as NO3 <br />ND <br />ND <br />Quality Control Report <br />0.10 <br />0.44 - - - <br />Client: <br />AdvancedGeo, Inc. <br />WorkOrder: <br />2208131 <br />Date Prepared: <br />08/02/2022 <br />BatchID: <br />250944 <br />Date Analyzed: <br />08/02/2022 <br />Extraction Method: <br />E300.1 <br />Instrument: <br />IC4 <br />Analytical Method: <br />E300.1 <br />Matrix: <br />Water <br />Unit: <br />mg/L <br />Project: <br />Postman Property <br />Sample ID: <br />MB/LCS/LCSD-250944 <br />QC Summary Report for E300.1 <br />Analyte MB MDL RL SPK MB SS MB SS <br />Result Val %REC Limits <br />Nitrate as N <br />Nitrate as NO3 <br />ND <br />ND <br />0.048 <br />0.21 <br />0.10 <br />0.44 - - - <br />Surrogate Recovery <br />Malonate <br />0.10 <br />0.1 101 90-115 <br />Analyte <br />LCS <br />Result <br />LCSD SPK <br />Result Val <br />LCS LCSD LCS/LCSD RPD RPD <br />%REC %REC Limits Limit <br />Nitrate as N 0.98 0.98 1 98 98 85-115 0.423 20 <br />Nitrate as NO3 4.3 4.4 4.4 98 99 85-115 0.423 20 <br />Surrogate Recovery <br />Malonate 0.099 0.10 0.10 99 100 90-115 0.130 20 <br />CA ELAP 1644 • NELAP 40330RELAP <br />Page 5 of 10 <br />