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Environmental Laboratories__ <br /> Working To Restore Nature <br /> QUALITY ASSURANCE f OUAMTY CONTROL REPORT <br /> 10201ab frm <br /> Attention Ms Nora Katoaka Date Analyzed: 07-31-92 <br /> RESNA G C # 2 <br /> 1710 Main St Matrix Water <br /> Escalon, CA 95320 <br /> Project. AGS 195091, Project W0169 <br /> Ethyl- Total <br /> Benzene Toluene benzene Xylenes TPHg TPHd <br /> I)pb .ppb Wb ppb onb -per <br /> Detection Limit 05 05 05 05 50 50 <br /> Blank ND ND ND ND ND ND <br /> Ethyl- Total <br /> Benzene Toluene benzene Xylenes TPHg TPHd <br /> Standard 111 110 110 111 111 104 <br /> MS 102 102 105 105 124 119 <br /> MSD 99 100 103 103 125 120 <br /> RPD 299 198 192 192 080 0.83 <br /> ppb = parts per billion = ug/L = micrograms per liter <br /> ND = Not detected Compound(s)may be present at concentrations below the detection limit <br /> NR = Analysis not requested <br /> MS = Matrix Spike <br /> MSD = Matrix Spike Duplicate <br /> RPD = Relative Percent Difference <br /> Acceptable Range <br /> Standard 95-115% <br /> Blank ND <br /> MS/MSD 70-130%n <br /> RPD <25% <br />. _August 13, 1992 <br /> Laboratory R resentattve Date Reported <br /> RESNA ENVIRONMENTAL LABORATORY IS CERTIFIED BY TiIE STATE OF CALIFORNIA <br /> DEPARTMENT OF HEALTH SERVICES AS A HAZARDOUS WASTE TESTING LABORATORY <br /> (C'crtitication No 1211) <br /> 42501 Albrae Street • Fremont, CA 94538 • Phone (510) 623-0775 • (800) 247-5223 • FAX (510) 651-8754 <br />