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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 />"W/!Cp Quality COUIttS" I http://www.mccampbell.com / E-mail: main@mccampbell.com <br />CA ELAP 1644 • NELAP 4033ORELAP <br />Page 6 of 11 <br />Quality Control Report <br />Client: <br />Terracon <br />WorkOrder: <br />2104518 <br />Date Prepared: <br />04/09/2021 <br />BatchID: <br />219134 <br />Date Analyzed: <br />04/09/2021 <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 />NA217019; EHLERS <br />PROPERTY Sample ID: <br />MB/LCS/LCSD-219134 <br />- <br />- <br />Surrogate Recovery <br />Malonate <br />2104518-001 AMS/MSD <br />CA ELAP 1644 • NELAP 4033ORELAP <br />Page 6 of 11 <br />QC Summary Report for E300.1 <br />Analyte <br />MB <br />Result <br />MDL <br />RL <br />SPK <br />Val <br />MB SS <br />%REC <br />MB SS <br />Limits <br />Nitrate as N <br />Nitrate as NO3 <br />ND <br />ND <br />0.0460 <br />0.200 <br />0.100 <br />0.440 <br />- <br />- <br />- <br />- <br />- <br />Surrogate Recovery <br />Malonate <br />0.102 <br />0.1 <br />101 <br />90-115 <br />Analyte <br />LCS <br />Result <br />LCSD <br />Result <br />SPK <br />Val <br />LCS <br />%REC <br />LCSD <br />%REC <br />LCS/LCSD <br />Limits <br />RPD <br />RPD <br />Limit <br />Nitrate as N <br />0.967 <br />0.978 <br />1 <br />97 <br />98 <br />85-115 <br />1.06 <br />20 <br />Nitrate as NO3 <br />4.28 <br />4.33 <br />4.4 <br />97 <br />98 <br />85-115 <br />1.06 <br />20 <br />Surrogate Recovery <br />Malonate <br />0.0992 <br />0.100 <br />0.10 <br />99 <br />100 <br />90-115 <br />0.834 <br />20 <br />Analyte <br />MS <br />DF <br />MS <br />Result <br />MSD <br />Result <br />SPK <br />Val <br />SPKRef <br />Val <br />MS <br />%REC <br />MSD <br />%REC <br />MS/MSD <br />Limits <br />RPD <br />RPD <br />Limit <br />Nitrate as N <br />Nitrate as NO3 <br />20 <br />20 <br />34.0 <br />151 <br />35.1 <br />155 <br />20 <br />88 <br />13.70 <br />60.68 <br />101 <br />102 <br />107 <br />108 <br />85-115 <br />85-115 <br />3.11 <br />3.11 <br />20 <br />20 <br />Surrogate Recovery <br />Malonate <br />20 <br />1.98 <br />2.06 <br />2 <br />99 <br />103 <br />90-115 <br />3.96 <br />20 <br />CA ELAP 1644 • NELAP 4033ORELAP <br />Page 6 of 11 <br />