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Environmental Laboratories----- <br /> Working To Restore Nature <br /> QUALITY' ASSURANCEIQUALITY CONTROL REPORT <br /> 10201ab.frm <br /> Attention: Mr. Greg Stahl Date Analyzed: 04-07-92 <br /> RESNA G.C. #: 2 <br /> 1710 Main Street Matrix: Water <br /> Escalon, CA 95320 <br /> Project: AGS 19509L, W0195 <br /> i <br /> i <br /> Ethyl- Total <br /> Benzene Toluene benzene Xylenes TPHg TPHd <br /> pRb ppb <br /> ppb PPPPPPPpb ppb PPPPPPPPDh <br /> Detection Limit: 0.5 0.5 0.5 0.5 50 100 <br /> Blank ND ND ND ND NR ND <br /> Ethyl- Total <br /> Benzene Toluene benzene Xylenes TPHg TPHd <br /> Standard 110 107 106 105 NR 109 <br /> MS 92 89 87 84 NR 101 <br /> MSD 94 90 88 85 NR 115 <br /> RPD 2.1 1.1 1.1 1.2 NR 13 <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. i <br /> MS = Matrix Spike I: <br /> MSD = Matrix Spike Duplicate is <br /> RPD = Relative Percent Difference !: <br /> Acceptable Ranee F <br /> Standard 185-115% k <br /> Blank ND <br /> MS/MSD 70-130% G <br /> RPD <25% <br /> April 24. 1992 <br /> Laboratory Representative Date Reported <br /> RESNA ENVIRONMENTAL LABORATORY IS CERTIFIED BY THE STATE OF CALIFORNIA <br /> DEPARTMENT OF HEALTH SERVICES AS A HAZARDOUS WASTE TESTING LABORATORY <br /> (Certification No. 1211) <br /> 42501 Albrae Street + Fremont, CA 94538 • Phone: (510) 623-0775 • (800) 247-5223 • FAX: (510) 651-8754 <br /> t <br />