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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 Telephone:(877)252-9262/Fax:(925)252-9269 <br /> "When Quality Counts" I <br /> http://www.mccampbell.com/E-mail:main@mccampbell.com <br /> Quality Control Report <br /> Client: Petralogix WorkOrder: 2109270 <br /> Date Prepared: 09/07/2021 BatchID: 229157 <br /> Date Analyzed: 09/07/2021 Extraction Method: E300.1 <br /> Instrument: IC4 Analytical Method: E300.1 <br /> Matrix: Water Unit: mg/L <br /> Project: SSS/NLS-S Koster Road Sample ID: MB/LCS/LCSD-229157 <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 ND 0.0460 0.100 - <br /> Nitrate as NO3 ND 0.200 0.440 - - - <br /> Surrogate Recovery <br /> Malonate 0.0981 0.1 98 90-115 <br /> Analyte LCS LCSD SPK LCS LCSD LCS/LCSD RPD RPD <br /> Result Result Val %REC %REC Limits Limit <br /> Nitrate as N 0.978 0.981 1 98 98 85-115 0.249 20 <br /> Nitrate as NO3 4.33 4.34 4.4 98 99 85-115 0.249 20 <br /> Surrogate Recovery <br /> Malonate 0.0988 0.0991 0.10 99 99 90-115 0.380 20 <br /> CA ELAP 1644•NELAP 4033ORELAP <br /> Page 6 of 11 <br />