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1534 Willow Pass Road. Pittsburg. CA 94565-1701 <br />� _ McCamr)bell AnalNtiical Inc. Toll Free Telephone: (877)252-9262/Fax: (925) 252-9269 <br />"When Quality Counts" hap://www.mccainpbell.com / E-mail: main amccampbell.coin <br />CA ELAP 1644 • NELAP 4033ORELAP <br />Page 5 of 13 <br />QC Summary Report for E300.1 <br />Quality Control Report <br />Client: <br />AdvancedGeo, Inc. <br />WorkOrder: <br />2105883 <br />Date Prepared: <br />05/18/2021 <br />BatchlD: <br />221691 <br />Date Analyzed: <br />05/18/2021 <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 />Mills Property <br />Sample ID: <br />MB/LCS/LCSD-221691 <br />CA ELAP 1644 • NELAP 4033ORELAP <br />Page 5 of 13 <br />QC Summary Report for E300.1 <br />Analyte <br />MB MDL RL <br />SPK <br />MB SS <br />MB SS <br />Result <br />Val <br />%REC <br />Limits <br />Nitrate as N <br />ND 0.0460 0.100 <br />Nitrate as NO3 <br />ND 0.200 0.440 <br />- <br />Surrogate Recovery <br />Malonate <br />0.105 <br />0.1 <br />105 <br />90-115 <br />Analyte <br />LCS LCSD SPK <br />LCS <br />LCSD <br />LCS/LCSD <br />RPD <br />RPD <br />Result Result Val <br />%REC <br />%REC <br />Limits <br />Limit <br />Nitrate as N <br />1.01 0.995 1 <br />101 <br />99 <br />85-115 <br />1.54 <br />20 <br />Nitrate as NO3 <br />4.48 4.41 4.4 <br />102 <br />100 <br />85-115 <br />1.54 <br />20 <br />Surrogate Recovery <br />Malonate <br />0.103 0.101 0.10 <br />103 <br />101 <br />90-115 <br />1.47 <br />20 <br />CA ELAP 1644 • NELAP 4033ORELAP <br />Page 5 of 13 <br />