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Environmental laboratories_ _ =_, WM <br /> Working To Restore Nature <br /> QUALM ASSURANCEIQUALITY CONTROL REPORT <br /> 102013b fret <br /> Attention Mr. Greg Stahl Date Analyzed: 02-11-93 <br /> RESNA G.C. #. 1 <br /> 1710 Main St. Matrix: Water <br /> Escalon, CA 95320 <br /> Project 11020.OL, Project W0475 <br /> Ethyl- Total <br /> Benzene Toluene benzene Xylenes TPHg TPHd <br /> .ppb <br /> P. VV Wb Wb Wb <br /> Detection Limit 05 05 0.5 0.5 50 50 <br /> Blank ND ND ND ND ND NR <br /> Ethyl- Total <br /> Benzene Toluene benzene Xylenes TPHg TPHd <br /> Standard 94 92 92 91 109 Nit <br /> MS 85 88 89 89 79 NR <br /> MSD 77 77 78 78 74 NR <br /> RPD 988 13.3 13 2 13.2 6.54 NR <br /> ppb = parts per billion = ug/L = micrograms per Mer <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 /> Acceptable Range <br /> Standard 85-115% <br /> Blank ND <br /> MS/MSD 70-130% <br /> RPD <25% <br /> �U <br /> February 23 1993 <br /> Laboratory Re esentative Date Reported <br /> RESNA ENIVIRON maa4TAL 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 a Fremont, CA 94538 • Phone (510) 623-0775 • (800) 247-5223 • FAX (510) 651-8754 <br />