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110 2nd Avenue South,#D7,Pacheco,CA 94553-5560 <br /> WCAMPBELL ANALYTICAL INC Telephone 925-798-1620 Fax 925-798-1622 <br /> 24 http/1wwwrnccam1)beJlco E-mail main@mccampbell com <br /> • <br />' Advanced GcoEnvironmental Client Project ID Ctty of Manteca Date Sampled 04/05/01 <br /> 837 Shaw Road Date Received 04/10/01 <br /> Stockton, CA 95215 CIient Contact Brian Millman Date Extracted 04/10/01 <br /> Client P 4 Date Analyzed 04/10-04/16/01 <br /> Diesel Range(C10-C23)Extractable Hydrocarbons as Diesel* <br /> EPA methods modified 8015,and 3550 or 3510,California RWQCB(SF Bay Region)method GCFID(3550)or GCFID(3510) <br /> Lab ID Client lD Matrix TPH(d)' %Recovery <br /> Surrogate <br /> 65162 MWI-15 S ND 117 <br /> 65163 MW1-20 S ND 83 <br /> 65164 MW 1-25 S ND 112 <br /> 65165 MW2-10 S ND 111 <br /> 65166 MW2-20 S ND 106 <br /> 65167 MW2-25 S ND 106 <br /> 65168 MW3-15 S ND 103 <br /> 65169 MW3-20 S ND 114 <br /> 65170 MW3-25 S ND 104 <br /> 65171 MW4-10 S ND 105 <br /> 65172 MW4-20 S ND 105 <br /> 65173 MW4-25 S ND 104 <br /> 65174 MW1-30 S ND 104 <br /> 65175 MW3-30 S ND 105 <br /> Reporting Limit unless otherwise W 50 ug/L <br /> stated,ND means not detected above <br />' the reporting limit S 1 0 mg/kg <br /> *water and vapor samples are reported in ug/L,wipe samples in ug/wipe,soil and sludge samples in mg/kg,and all 7 CLP I STLC 1 SPLP <br /> extracts m ug/L <br /> "cluttered chromatogram resulting in coeluted surrogate and sample peaks,or surrogate peak is on elevated baseline,or surrogate has been <br /> diminished by dilution of original extract <br />' 'The following descriptions of the TPH chromatogram are cursory in naturc and McCampbell Analytical is not responsible for their <br /> interpretation a)unmodified or weakly modified diesel is significant,b)diesel range compounds are significant,no recognizable pattern,c) <br /> aged diesel?is significant),d)gasoline range compounds are significant,e)medium boiling point pattern that does not match diesel (9), 0 <br /> one to a few isolated peaks present, g) oil range compounds are significant, h) lighter than water mirmscible sheen is present, 1) liquid <br /> sample that contains greater than—5 vol %sediment <br /> DHS Certification No 1644 Edward HarmIton, Lab Director <br />