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Environmental Laboratories _ <br /> Working To Restore Nature <br /> • <br /> QUALITY ASSURANCELQUALrTY CONTROL REPORT <br /> 10?Qlals firm <br /> • Attention Mr Greg Gurss Date Analyzed 08-24-92 <br /> RESNA GC # 2 <br /> 3164 Gold Camp Dr , Ste 200 Matrix Water <br /> Rancho Cordova, CA 95670 <br /> Project 38012 14, Unocal 2859 <br /> • <br /> Ethyl- Total <br /> Benzene Toluene benzene Xylenes TPHg TPHd <br /> W <br /> ` Detection Limit 05 05 05 05 50 50 <br /> Blank ND ND ND ND ND NR <br /> Ethyl- Total <br /> Benzene Toluene benzene Xylenes TPHg TPHd <br /> % % C70 % % % <br /> Standard 96 100 103 103 91 NR <br /> MS 87 88 90 89 73 NR <br />• <br /> MSD 83 82 83 83 84 NR <br /> RPD 471 706 809 698 14 0 NR <br />• ppb = parts per billion = ug/L = nticrogmms per liter <br /> ND = Not detected Compound(s) may be present at concentrations below the detection limit <br /> NR = Analvsis not requested <br /> MS = Matrix Spike <br /> MSD = Matnx Spike Duplicate <br /> RPD = Relative Percent Difference <br /> Acceptaole Ranee <br /> Standard 35-115110 <br /> Blank ND <br /> MS/MSD 70-130°10 <br /> RPD <25% <br />•� <br /> August 31 1992 <br /> L.aboratory R presentattve Date Reported <br /> I <br /> RESNA ENVIRONMENTAL LABORATORY IS CERTIFIED BY T7{E STATE OF CALIFORNIA <br /> DEPARTMENT OF HEALTH SERVICES AS A HAZARDOUS WAM TESTING LABORATORY <br />. (Certification No 1211) <br /> 42501 Aibrae Street• Fremont, CA 94538 • Phone (510) 623 0775 • (8001 247-5223 0 F-\X (510) 651-6754 <br />