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Ak Environmental Laboratories - 19 :MAI Working to Restore Nature 42501 Albrae Street Fremont, CA 94538 Phone (510)62M775 (800)247-5223 FAX (5 0)651-87--A ANALYSIS REPORT Imolab frm Attention- Mr. John Lane Date Sampled- 03-19-92 RESNA Date Received: 03-20-92 1710 Main Street BTEX Analyzed, 03-30-92 Escalon, CA 95320 TPHg Analyzed 03-30-92 Project. AGS 19509-1 , Project #W0148 TPHd Analyzed 03-26-92 Stockton Police Station Matrix: Water Ethyl- Total Benzene Toluene benzene Xylenes TPHg TPHd Wpb pDh p Detection Limit: 0.5 05 05 05 50 100 SAMPLE Laboratory Identification SPS MW-1 ND ND ND ND ND ND W1203587 SPS DW ND ND ND ND ND ND W1203588 ppb = parts per billion = ug/L = micrograms per liter ND = Not detected Compound(s)may be present at concentrations below the detection limit NR = Analysts not requested ANALYTICAL PROCEDURES BTEX--Benzene,toluene,ethylbenzene,and total xylene isomers(BTEX)are measured by extraction using EPA Method 5030 followed by analysts using EPA Method 8020/602,which utilizes a gas chromatograph(GC)equipped with a photoionization detector (PID)and a flame-ionization detector(FID) in series TPHg—Total petroleum hydrocarbons as gasoline(low-to-medium boiling points)are measured by extraction using EPA Method 5030, followed by analysts using modified EPA Method 8015,which utilizes a GC equipped with an FID TPHd--Total petroleum hydrocarbons as diesel (high boiling points)are measured by extraction using EPA Method 3550 for soils and EPA Method 3510 for water,followed by modified EPA Method 8015 with direct sample Injection into a GC equipped with an FID April 21992 Laboratory Representative Date Reported RESNA Environmental Laboratory IS CERTIFIED BY THE STATE OF CALIFORNIA DEPARTMENT OF HEALTH SERVICES AS A HAZARDOUS WASTE TESTING LABORATORY (Certification No 121I)