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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.mccatnpbell.com / E-mail: main@mccampbell.com <br />Client: <br />Date Prepared: <br />Date Analyzed: <br />Instrument: <br />Matrix: <br />Project: <br />Quality Control Report <br />Fremouw Environmental Services, Inc. WorkOrder: 1812236 <br />12/6/18 BatchID: 169550 <br />12/7/18 Extraction Method: E200.8 <br />ICP-MS3 Analytical Method: E200.8 <br />Water Unit: µg/L <br />Pick N Pull/ Stockton Sample ID: MB/LCS/LCSD-169550 <br />1812236-001 DMS/MSD <br />QC Report for Metals (>1% <br />Sediment Content) <br />Analyte <br />LCS <br />Result <br />LCSD <br />Result <br />SPK <br />Val <br />LCS LCSD <br />%REC %REC <br />LCS/LCSD <br />Limits <br />RPD <br />RPD <br />Limit <br />Antimony <br />280 <br />280 <br />250 <br />112 110 <br />85-115 <br />2.01 <br />20 <br />Arsenic <br />260 <br />260 <br />250 <br />106 104 <br />85-115 <br />1.99 <br />20 <br />Barium <br />2700 <br />2700 <br />2500 <br />109 107 <br />85-115 <br />2.14 <br />20 <br />Beryllium <br />270 <br />260 <br />250 <br />108 106 <br />85-115 <br />2.37 <br />20 <br />Cadmium <br />270 <br />270 <br />250 <br />108 106 <br />85-115 <br />1.25 <br />20 <br />Chromium <br />270 <br />270 <br />250 <br />109 107 <br />85-115 <br />1.81 <br />20 <br />Cobalt <br />260 <br />250 <br />250 <br />104 102 <br />85-115 <br />2.33 <br />20 <br />Copper <br />270 <br />260 <br />250 <br />108 105 <br />85-115 <br />3.14 <br />20 <br />Lead <br />270 <br />260 <br />250 <br />108 104 <br />85-115 <br />3.42 <br />20 <br />Mercury <br />6.3 <br />6.5 <br />6.25 <br />101 104 <br />85-115 <br />2.49 <br />20 <br />Molybdenum <br />270 <br />260 <br />250 <br />107 105 <br />85-115 <br />1.74 <br />20 <br />Nickel <br />270 <br />260 <br />250 <br />109 105 <br />85-115 <br />3.72 <br />20 <br />Selenium <br />270 <br />270 <br />250 <br />109 107 <br />85-115 <br />1.97 <br />20 <br />Silver <br />270 <br />260 <br />250 <br />107 103 <br />85-115 <br />3.52 <br />20 <br />Thallium <br />260 <br />250 <br />250 <br />105 102 <br />85-115 <br />3.17 <br />20 <br />Vanadium <br />270 <br />270 <br />250 <br />107 106 <br />85-115 <br />1.07 <br />20 <br />Zinc <br />2700 <br />2600 <br />2500 <br />107 103 <br />85-115 <br />3.47 <br />20 <br />Surrogate Recovery <br />Terbium <br />2700 <br />2600 <br />2500 <br />107 105 <br />70-130 <br />2.34 <br />20 <br />Analyte <br />MS <br />DF <br />MS <br />Result <br />MSD <br />Result <br />SPK SPKRef <br />Val Val <br />MS MSD <br />%REC %REC <br />MS/MSD <br />Limits <br />RPD <br />RPD <br />Limit <br />Antimony <br />1 <br />290 <br />300 <br />250 16.12 <br />109 112 <br />85-115 <br />2.81 <br />20 <br />Arsenic <br />1 <br />260 <br />270 <br />250 4.259 <br />103 107 <br />85-115 <br />4.01 <br />20 <br />Barium <br />1 <br />2900 <br />2900 <br />2500 210.1 <br />106 109 <br />85-115 <br />2.78 <br />20 <br />Beryllium <br />1 <br />270 <br />270 <br />250 ND <br />106 109 <br />85-115 <br />2.38 <br />20 <br />Cadmium <br />1 <br />260 <br />270 <br />250 ND <br />104 107 <br />85-115 <br />2.36 <br />20 <br />Chromium <br />1 <br />260 <br />280 <br />250 2.725 <br />105 110 <br />85-115 <br />4.41 <br />20 <br />Cobalt <br />1 <br />250 <br />260 <br />250 ND <br />100 103 <br />85-115 <br />3.16 <br />20 <br />Copper <br />1 <br />300 <br />320 <br />250 47.16 <br />102 107 <br />85-115 <br />4.42 <br />20 <br />Lead <br />1 <br />350 <br />360 <br />250 96.45 <br />102 107 <br />85-115 <br />3.32 <br />20 <br />Mercury <br />1 <br />6.3 <br />6.4 <br />6.25 ND <br />101 103 <br />85-115 <br />1.80 <br />20 <br />Molybdenum <br />1 <br />340 <br />350 <br />250 82.65 <br />102 108 <br />85-115 <br />4.11 <br />20 <br />Nickel <br />1 <br />270 <br />280 <br />250 13.90 <br />102 107 <br />85-115 <br />4.32 <br />20 <br />Selenium <br />1 <br />260 <br />270 <br />250 ND <br />105 108 <br />85-115 <br />3.26 <br />20 <br />Silver 1 250 260 250 ND 101 104 85-115 2.65 20 <br />(Cont.) <br />Page 10 of 17 <br />