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Environmental Laboratories -_- At AC��� <br /> Working To Restore Nature <br /> Ole <br /> QUALITY ASSURANCE/QUALITY CONTROL REPORT <br /> Attention Richard Aiden Date Analyzed 04-07-93 <br /> RESNA GC # 3 <br /> 1710 Main Street Matrix Water <br /> Escalon, California 95320 <br /> Protect 13100 OL, Project 38012 15 <br /> Unocal 2859, Stockton <br /> Ethyl Total <br /> Benzene Toluene Benzene Xylenes TPHg TPHd <br /> ppb � ppb ppb ppb ppb ppb <br /> Detection Limit 05 05 05 0 5 50 50 <br /> Blank ND ND ND ND ND NR <br /> Standard 105 105 108 110 91 NR <br /> MS 88 91 93 94 108 NR <br /> MSD 82 85 86 87 107 NR <br /> RPD 706 682 782 773 093 NR <br /> Ppb=parts per billion=ug(L=micrograms per liter <br /> ND=Not detected Compound(s)maybe present at concentrations below the detection hmtt. <br /> L%R=Analysts not requested <br /> MS=Matrix Spike <br /> MSD=Matrix Spike Duplicate <br /> RPD=Relative Percent Difference <br /> Acceptable Ranee <br /> Standard 85 11590 <br /> Blank ND <br /> %IS/MSD 70 130% <br /> RPD <25% <br /> S +� } J <br /> April 12 1993 <br /> Liborwory Represetr'tative Date Reported <br /> RESNA ENVIRONMENTAL LABORATORY IS CERTIFIED BY THE STATE OF CALIFORNIA <br /> DEPARTMENT OF HFALTH SERVICES AS A HAZARDOUS WASTE TESTING LABORATORY <br /> (Certification No 1211) <br /> t� <br /> 42501 Albrae Street 0 Fremont CA 94538 • Phone (310) 623-0775 0 (800) 237-5223 6 FAX 1510) 651 8754 <br />