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1534 Willow Pass Road,Pittsburg,CA 94565-1701 <br /> M c Campbell Analytical, l n c. Toll Free Telephone:(877)252-9262/Fax:(925)252-9269 <br /> "R%en Quality Counts" http://www.mccampbell.com/E-mail:main@mccampbell.com <br /> Quality Control Report <br /> Client: AdvancedGeo,Inc. WorkOrder: 2103D57 <br /> Date Prepared: 03/23/2021 -03/24/2021 BatchlD: 217931 <br /> Date Analyzed: 03/23/2021 -03/24/2021 Extraction Method: E300.1 <br /> Instrument: IC4 Analytical Method: E300.1 <br /> Matrix: Water Unit: mg/L <br /> Project: Rivera Property Sample ID: MB/LCS/LCSD-217931 <br /> 2103D57-001 AMS/MSD <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 0.0986 0.1 99 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 0.967 0.950 1 97 95 85-115 1.78 20 <br /> Nitrate as NO3 4.28 4.21 4.4 97 96 85-115 1.78 20 <br /> Surrogate Recovery <br /> Malonate 0.0992 0.0973 0.10 99 97 90-115 1.92 20 <br /> Analyte MS MS MSD SPK SPKRef MS MSD MS/MSD RPD RPD <br /> DF Result Result Val Val %REC %REC Limits Limit <br /> Nitrate as N 1 0.964 0.962 1 ND 96 96 85-115 0.163 20 <br /> Nitrate as NO3 1 4.27 4.26 4.4 ND 97 97 85-115 0.163 20 <br /> Surrogate Recovery <br /> Malonate 1 0.0984 0.0992 0.10 98 99 90-115 0.789 20 <br /> CA ELAP 1644•NELAP 4033ORELAP <br /> Page 5 of 10 <br />