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Environmental Laboratories__ �== —'�� <br /> Working To Restore Nature <br /> QUALITY ASSURANCE/QUALITY CONTROL REPORT <br /> Attention John Lane Date Analyzed 03-26-96 <br /> RESNA G C # 2 <br /> 1710 Main Street Matnx Water <br /> Escalon, California 95320 <br /> Project 110200L, Project W032700 <br /> Knowles Property, Stockton <br /> Ethyl Total <br /> Benzene Toluene Benzene Xylenes TPHg TPHd <br /> ppb ppb ppbb ppb ppb ppb <br /> Detection Limit 05 05 05 0 5 50 50 <br /> Blank ND ND ND ND ND NR <br /> Standard 99 102 106 103 90 NR <br /> MS 114 116 123 117 121 NR <br /> MSD 118 119 127 120 117 NR <br /> RPD 345 255 320 253 336 NR <br /> ppb=parts per billion=ug/L-micrograms per Mer <br /> ND=Not detected Compound(s)maybe present at concentrations below the detection hmiL <br /> NR=Analysis not requested <br /> MS=Matrix Spire <br /> MSD=Matrix Spike Duplicate <br /> RPD=Relative Percent Difference <br /> Acceptable Range <br /> Standard 85-1 I5% <br /> Blank ND <br /> NL%MSD 70-130% <br /> RPD x25% <br /> r April 1,1993 <br /> Laboratory Re entattve Date Repotted <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 6 Phone (510) 623-0775 • (800) 247-5223 0 FAX (510) 651-8754 <br />