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COLUMBIA ANALYTICAL SERVICES, INC. <br /> QA/QC Report <br /> Client: EMCON Associates Service Request: 5940762 <br /> Project: Newark Sierra Paperboard Corp. /OE11-001.05 Date Collected: 6/29/9.1 <br /> Sample Matrix: Water Date Received: 7/1/94 <br /> Date Extracted: 7/6/9.1 <br /> Date Analyzed: 7/7.8/9.1 <br /> Surrogate Recovery Summary <br /> TPH as Diesel and Motor Oil <br /> EPA Method 3510/California DHS LUFT Method <br /> Percent Recovery <br /> Sample Name Lab Code p-Terphen.1 <br /> MW-1 S940762-001 82 <br /> MW-2 5940762-002 95 <br /> MW-3 S940762-003 81 <br /> Method Blank 5940706-WB 86 <br /> CAS Acceptance Limits: 66-123 <br /> Approved By: L l/ "1 <br /> Date: / <br /> SURI/062"< <br /> Page 5 of 6 <br /> 1921 Ringwood Avenue Son Jose, California 95131 • Telephone 408/457.2400 • Fox 408/437-9556 <br />