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,LOL�&, Oilfield Environmental &Compliance, Inc. <br />CalRecycle Project: Lathrop <br />432 Geranium Circle Project Number: PNA-SWIS 39-22 PNA Lathrop Reported: <br />Galt CA, 95632 Project Manager: Sabra Ambrose 02/23/2018 15:39 <br />Total Metals by EPA 6000/7000 Series Methods - Quality Control <br />Analyte Result RL Units Spike Source %REC %REC RPD RPD Notes <br />Level Result Limits Limit <br />Batch B8A0749 - EPA 6010B Preparation: EPA 3050B 01/31/18 08:28 <br />Duplicate (B8A0749-DUPI) <br />Source: 1800597-08 <br />Analyzed: 02/05/18 11:58 <br />Antimony <br />ND <br />2.4 mg/kg <br />ND <br />20 <br />Arsenic <br />4.36 <br />1.9 <br />4.38 <br />0.470 <br />20 <br />Barium <br />387 <br />0.97 <br />353 <br />9.35 <br />20 <br />Beryllium <br />ND <br />0.48 <br />ND <br />20 <br />Cadmium <br />ND <br />0.24 <br />ND <br />20 <br />Chromium <br />23.1 <br />0.48 <br />25.9 <br />11.2 <br />20 <br />Cobalt <br />6.45 <br />0.48 <br />6.70 <br />3.82 <br />20 <br />Copper <br />15.4 <br />0.97 <br />15.5 <br />0.759 <br />20 <br />Lead <br />11.5 <br />0.48 <br />11.4 <br />0.767 <br />20 <br />Molybdenum <br />0.378 <br />0.48 <br />0.718 <br />62.2 <br />20 <br />Nickel <br />14.0 <br />0.24 <br />14.7 <br />4.96 <br />20 <br />Selenium <br />ND <br />1.9 <br />ND <br />20 <br />Silver <br />ND <br />0.48 <br />ND <br />20 <br />Thallium <br />1.29 <br />097 <br />ND <br />20 <br />Vanadium <br />32.4 <br />0.97 <br />32.9 <br />1.37 <br />20 <br />Zinc <br />47.2 <br />0.97 <br />46.1 <br />2.42 <br />20 <br />Matrix Spike (B8A0749-MSI) <br />Source: 1800597-08 <br />Analyzed: 02/05/18 <br />11:31 <br />Antimony <br />30.6 <br />2.5 mg/kg <br />98.8 <br />ND <br />31.0 <br />10-114 <br />Arsenic <br />102 <br />2.0 <br />98.8 <br />4.38 <br />99.0 <br />76-125 <br />Barium <br />423 <br />0.99 <br />98.8 <br />353 <br />71.1 <br />24-179 <br />Beryllium <br />104 <br />0.49 <br />98.8 <br />ND <br />106 <br />83-115 <br />Cadmium <br />101 <br />0.25 <br />98.8 <br />ND <br />102 <br />77-121 <br />Chromium <br />131 <br />0.49 <br />98.8 <br />25.9 <br />106 <br />43-162 <br />Cobalt <br />106 <br />0.49 <br />98.8 <br />6.70 <br />100 <br />76-122 <br />Copper <br />127 <br />0.99 <br />98.8 <br />15.5 <br />113 <br />45-172 <br />Lead <br />116 <br />0.49 <br />98.8 <br />11.4 <br />106 <br />55-137 <br />Molybdenum <br />90.6 <br />0.49 <br />98.8 <br />0.718 <br />90.9 <br />73-114 <br />Nickel <br />119 <br />0.25 <br />98.8 <br />14.7 <br />106 <br />45-151 <br />Selenium <br />94.6 <br />20 <br />98.8 <br />ND <br />95.8 <br />30-143 <br />Silver <br />3.97 <br />0.49 <br />4.94 <br />ND <br />80.3 <br />32-161 <br />Thallium <br />94.7 <br />0.99 <br />98.8 <br />ND <br />95.8 <br />45-141 <br />Vanadium <br />136 <br />0.99 <br />98.8 <br />32.9 <br />105 <br />78-127 <br />Zinc <br />147 <br />0.99 <br />98.8 <br />46.1 <br />102 <br />46-154 <br />The results in this report apply to the samples analyzed in accordance with the chain of custody document. This analytical report must he reproduced in its entirety. <br />QR -04 <br />Client Connect: client.oec.com\reports TEL: (805) 922-4772 <br />307 Roemer Way, Suite 300, Santa Maria, CA 934 www.oecusa.com FAX: (805) 925-3376 <br />Page 64 of87 <br />