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Environmental Laboratories �� <br /> . Working To Restore Nature <br /> QUALITY ASSURANCE/QUALITY CONTROL REPORT <br /> Attention John Lane TPHg, BTEX Analyzed 04-05-93 <br /> RESNA G C # 2 <br /> 1710 Main Street TPHd Extracted NR <br /> Escalon, California 95320 Matrix Water <br /> Project 110200L, Project W030900 <br /> Ethyl Total <br /> Benzene Toluene Benzene Xylenes TPHg TPHd <br /> ppb ppb ppb ppb ppb ppb <br /> Detection Limit 05 0 5 05 05 50 50 <br /> Blank NO NO ND NO ND NR <br /> Standard 88 89 91 92 99 NR <br /> MS 101 100 106 101 99 NR <br />• MSD 92 90 93 86 94 NR <br /> RPD 933 105 131 160 518 NR <br /> ppb=parts per billion=ug/L=micrograms per liter <br /> ND=Not detected. Compound(s)may be present at concentrations below the detccuon limit. <br /> NR=Analyses not requested <br /> MS=Matra 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 /> +tw-awLt April 8,1993 <br /> Laboratory Representattve 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 /> 42501 Albrae Street 0 Fremont, CA 94538 • Phone (510) 623-0775 0 (800) 247-5223 0 FAX (510) 651-8754 <br />