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COLUMBIA ANALYTICAL SERVICES. INC. 1� <br /> x <br /> °F <br /> QA/0C Report <br /> *Client: EMCON Associates Date Received: 03/12/93 <br /> Project: EMCON Project No. OG71-038 01 Service Request No.: SJ93-0368 <br /> ARCO Facility-No 2168 Sample Matrix: Water <br /> Matrix Spike/Duplicate Matrix Spike Summary <br /> Halogenated Volatile Organic Compounds <br /> EPA Methods 5030/601 <br /> pg/L (ppb) <br /> Sample Name MW-1 5-§4) <br /> Date Analyzed 03/16/93 <br /> Percent Recovery <br /> EPA <br /> Spike Sample Spike Result Acceptance <br /> D_ I e L I Result MS DMS MS DMS Cr ria <br /> 1,1-Dichlaroethene 10 ND 108 105 108 105 28-167 <br /> Trichloroethene 10 ND 11 4 11 0 114 110 35-146 <br /> Tetrachloroethene 10 ND 11 3 11 0 113 110 26.162 <br /> NO None Detected at or above the method reporting limit <br /> 0 1 <br /> Approved by: Date- 111,0174 z� � � <br />