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Environmental Laboratories <br /> iWorking to Restore Nature <br /> 42501 Albrae Street <br /> Fremont,CA 94538 <br /> Phone (5I0)623-0775 <br /> (800)247-5223 <br /> FAX (510)65I-8754 <br /> QUALM ASSURANCE/QUALITY CONTROL REPORT <br /> 1020Iab frm <br /> Attention- Ms. T1na LePage Date Analyzed 04-02-92 <br /> RESNA G.C. #• 1 <br /> 1710 Main Street Matrix: Water <br /> Escalon, CA 95320 <br /> Project AGS 195091_, W0174 <br /> Ethyl- Total <br /> Benzene Toluene benzene Xylenes TPHg TPHd <br /> ppb P - � p9h <br /> Detection Lurut: 0.5 05 05 0.5 50 100 <br /> Blank ND ND ND ND ND ND <br /> Ethyl- Total <br /> Benzene Toluene benzene Xylenes TPHg TPHd <br /> Standard 102 105 102 101 100 113 <br /> MS 101 100 101 97 103 116 <br /> MSD 92 90 90 85 99 97 <br /> RPD 9.3 11 12 13 4.0 18 <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 /> Acce table Ran e <br /> Standard 85-115% <br /> Blank ND <br /> MS/MSD 70-130% <br /> f/ RPD <25% <br /> • ��/� Apnl 10, 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 />