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Environmental laboratories <br /> Working To Restore Nature <br /> -QUALITY ASSURANCE/QUALITY CONTROL REPORT <br /> 10MIab fret <br /> Attention Ms. Lois Frantz Date Analyzed 10-16-92 <br /> RESNA GC. #. 2 <br /> 1710 Main St. Matrix: Water <br /> Escalon, CA 95320 <br /> Project. 195091, Project W0169 <br /> Ethyl- Total <br /> Benzene Toluene benzene Xylenes TPHg TPHd <br /> W DDII Wb .P..1?b ppb P.-l'b <br /> Detection Limit- 0.5 0.5 0.5 0.5 50 50 <br /> Blank ND ND ND ND ND ND <br /> • Ethyl- Total <br /> Benzene Toluene benzene Xylenes TPHg TPHd <br /> Standard 103 98 104 102 96 115 <br /> MS 86 84 86 85 86 95 <br /> MSD 81 78 80 79 84 87 <br /> RPD 5.99 741 7.23 7.32 235 8.79 <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 = Analysts not requested <br /> MS = Matrix Spike <br /> MSD = Matrix Spike Duplicate <br /> RPD = Relative Percent Difference <br /> Acceptable Ranle <br /> Standard &5-115%n <br /> Blank ND <br /> MS/MSD 70-13D% <br /> RPD <25% <br /> October 22. 1992 <br /> Laboratory R resentattve Date Reported <br /> RL,SNA ENVIRONhCH rAL 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 />