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' • COLUMBIA ANALYTICAL SERVICES,INC. <br /> QA/QC Report <br /> Client: EMCON Service Request: K9504048 <br /> ' Project: Tosco-Tracy/#2788-100.002 Date Collected: 6/29/95 <br /> Sample Matrix: Water Date Received: 6/30/95 <br /> Date Extracted: 7/1/95 <br /> Date Analyzed: 7/5-6/95 <br /> Surrogate Recovery Summary <br /> Total Petroleum Hvdrocarbons as Diesel and Oil <br /> California DHS Luft Method <br /> ' Percent Recovery <br /> Sample Name Lab Code o-Terphenyl <br /> ' HP-1 K9504048-001 64 <br /> HP-2 K9504048-002 64 <br /> ' HP-3 K9504048-003 81 <br /> Method Blank K950701-MB 75 <br /> CAS Acceptance Limits: 59-110 <br /> t Approved By U tqJJQ 7 5 <br /> Date: <br /> OCOGSPHC.LPI-TPHwSUR]f1195 <br /> P p No.: <br /> (1n1', 10) <br />