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1534 Willow Pass Road, Pittsburg, CA 94565-1701 <br />Mccampbell Analytical, Inc. Foil Free Telephone: (877) 252-9262 / Fav (925) 252-9269 <br />When Qunliry Counts" http://www.inecainpbell.com / E-mail: main ri.mccampbell.com <br />CA ELAP 1644 <br />Page 5 of 10 <br />Quality Control Report <br />Client: <br />Petralogix <br />WorkOrder: <br />2206567 <br />Date Prepared: <br />06/09/2022 <br />BatchlD: <br />247175 <br />Date Analyzed: <br />06/09/2022 <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 />SSS/NLS- 12958/12970 <br />E Jahant Road Sample ID: <br />MB/LCS/LCSD-247175 <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 0.048 0.10 <br />- <br />Nitrate as NO3 <br />ND 0.21 0.44 <br />Surrogate Recovery <br />Malonate <br />0.099 <br />0.1 <br />99 <br />90-115 <br />Analyte <br />LCS LCSD SPK LCS <br />LCSD <br />LCS/LCSD <br />RPD RPD <br />Result Result Val %REC %REC <br />Limits <br />Limit <br />Nitrate as N <br />0.97 0.97 1 97 <br />97 <br />85-115 <br />0.348 20 <br />Nitrate as NO3 <br />4.3 4.3 4.4 97 <br />98 <br />85-115 <br />0.348 20 <br />Surrogate Recovery <br />Malonate <br />0.098 0.099 0.10 98 <br />99 <br />90-115 <br />0.132 20 <br />CA ELAP 1644 <br />Page 5 of 10 <br />