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h'1 COLUMBIA ANALYTICAL SERVICES, INC. <br /> QA/QC Report ~; <br /> Client: EMCON Associates Date Received: 09/03/93 <br /> Project: EMCON Project NO.OG71-033.01 Service Request No.: SJ93-1102 <br /> ARCO Facility No. 54$ Sample Matrix: Water <br /> �1 <br /> Matrix Spike/Duplicate Matrix Spike Summary <br /> Total Recoverable Petroleum Hydrocarbons <br /> SM5520-C <br /> mg/L (ppm) <br /> 1 <br /> Percent Recovery <br /> Spike Sample Spike Result CAS <br /> Acceptance <br /> Level Result MS DMS MS DMS Criteria <br /> 4.0 NO 3.7 4.1 92. 102. 56-151 <br />• <br /> i <br /> Approved by: Date: ' <br />� o <br /> 9 <br />