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110 Second Avenue South,#07,Pacheco,CA 94553 <br /> McCAMPB ELL ANALYTICAL INC Telephone 510-798-1620 Fax 510-798-1622 <br /> http//www mccampbell corn E-mail main@mccampbell com <br /> • <br /> Advanced GeoEnvironmental Client Project ID Ripon Farm Service Date Sampled 10/01/97 <br /> 1803 West March Lane, Ste A Date Received 10/02/97 <br /> Stockton, CA 95207 Client Contact Bill Little Date Extracted 10/02-10/03/97 <br /> Client P O Date Analyzed 10102-10/03/97 <br /> Gasoline Range(C6-C12) Volatile Hydrocarbons as Gasoline*,«rth Alethyl ter t-Butyl Ether* &BTEX* <br /> EPA methods 5030,modified 8015,and 8020 or 602,California RWQCB(SF Bad Region)method GCFID(5030) <br /> Lab ID Client ID Matrix TPH(g)+ MTBE Benzene Toluene Ethylben- Xylenes %Recovery <br /> zene Surrogate <br /> 81474 MW-1 W 830,b,1 ND<11 16 148 10 15 101 <br /> 81475 MW-2 W 7200,a ND<49 1200 46 330 580 94 <br /> 81476 MW-3 W 610,b,1,h 5 3& 1 0 ND 20 44 104 <br /> 81477 MW-4 W 230,b,1 NID ND ND ND ND 104 <br /> 81478 MW-5 W ND ND ND ND ND ND 104 <br /> Result not in substantial agreement with EPA 8260 result,presumably due to less ceitam compound identification/ <br /> resolution inherent in EPA 8020 <br /> Reporting Limit unless W 50 ug/L 5 0 {1 05 05 05 <br /> otherwise stated,ND <br /> means not detected above <br /> the reporting limit m S 1 0 /k 005 0 005 0 005 0 005 0 005 <br /> mg/kg <br /> *water and vapor samples are reported in ug/L,wipe samples in ugAkipe,soil and sludge samples in ing/kg,and aU TCLP and SPLA extracts <br /> in ug/L <br /> "cluttered chromatogram,sample peak coelutes with surrogate peak <br /> 'The following descriptions of the TPH chromatogram are cursory in nature and McCampbell Analytical is not responsible for their <br /> interpretation a) unmodified or weakly modified gasoline is significant b) heavier gasoline range compounds are significant(aged <br /> gasoline'), c) lighter gasoline range compounds (the most mobile fiacuon) are significant d) gasoline range compounds having broad <br /> chromatographic peaks are significant,biologically altered gasoline, e)TPH patten,that does not appear to be denved from gasoline(v) f) <br /> one to a few isolated peaks present,g)strongly aged gasoline or diesel range compounds are significant, h)lighter than eater immiscible <br /> sheen is present,i)liquid sample that contains greater than—5 Nol %sediment j)no recognizable pattern <br /> DHS Certification No 1644 Edward Hamilton,Lab Director <br />