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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" http://www.mccainpbell.com/E-mail:main@mccampbell.com <br /> Quality Control Report <br /> Client: Terracon WorkOrder: 191OA50 <br /> Date Prepared: 10/22/19 BatchlD: 187527 <br /> Date Analyzed: 10/22/19 Extraction Method: E300.1 <br /> Instrument: IC4 Analytical Method: E300.1 <br /> Matrix: Water Unit: mg/L <br /> Project: NA197081;Gribaudo Property Sample ID: MB/LCS/LCSD-187527 <br /> 1910A50-001 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 0.053 0.10 <br /> Nitrate as NO3 ND 0.23 0.44 - - - <br /> Surrogate Recovery <br /> Formate 0.11 0.1 108 85-115 <br /> Analyte LCS LCSD SPK LCS LCSD LCS/LCSD RPD RPD <br /> Result Result Val %REC %REC Limits Limit <br /> Nitrate as N 1.0 1.0 1 103 103 85-115 0 15 <br /> Nitrate as NO3 4.5 4.6 4.4 103 104 85-115 0.302 15 <br /> Surrogate Recovery <br /> Formate 0.11 0.11 0.10 105 106 90-115 0.238 10 <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 4 6.9 7.0 1 5.984 96 102 85-115 0.911 15 <br /> Nitrate as NO3— 4 31 31 4.4 26.50 96 103 85-115 0.911 15 <br /> Surrogate Recovery <br /> Formate 4 0.10 0.11 0.10 101 108 90-115 7.25 10 <br /> CA ELAP 1644•NELAP 4033ORELAP <br /> Page 6 of 12 <br />