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S IEC ® R <br /> . Mr Michael Infurna <br /> July 16, 2004 <br /> Page 3 <br /> I �1 <br /> Copies of the laboratory analytical reports and chain-of-custody documentation are Included <br />` In Attachment 5 Additional soil samples designated as OW-17-9, or similarly designated, J„ <br /> found on the chain-of-custody documents were previously reported In SECOR's A' <br /> Groundwater Oxygenation System Installation Report, dated April 30, 2004 Soil analytical <br /> results are presented In Table 1 and summarized below I, <br /> J <br /> li l�l` <br /> I 1'k <br /> Number of Detections Minimum Maximum a�A <br /> Constituents Above the MDL of the 10 Detection in mglkg Detection in mg/kg <br /> Total Samples (Sample ID) (Sample ID) <br /> TPHg 3 1 8(USB-1-S-5) 100(USB-2-S-10) <br /> 4�4 <br /> TPHd 2 13(USB-2-S-10) 20(UST-S-40) , <br /> Benzene 2 0 005(MW-67UA-S-15) 2 0(USB-2-S-10) <br /> Toluene 2 0 017(MW-67UA-S-15) 3 7(USB-2-S-10) >> <br /> 7 I�Et <br /> Ethylbenzene 3 0 003(USB-1-S-5) 4 8(USB-2-S-10) I <br /> Total Xylenes 8 0 001 (UST-S-30) 16(USB-2-S-10) I' <br /> I � k <br /> MtBE 6 0 001 (MW-67UA-S-15) 1 5(USB-2-S-10) <br /> TAME 2 0 004(UST-S-35) 0 023(UST-S-25) �`'V,, <br /> irg <br /> Total Lead 10 3 27(UST-S-40) 9 16(USB-1-S-5) <br /> i <br /> Explanations ` <br /> USB-1-S-5=Soil boring sample USB-1 at 5 feet bgs „ <br /> UST-S-25=Sod boring sample from monitoring well MW-68A at 25 feet bgs <br /> MW-67UA-S-15=Soil boring sample from monitoring well MW-67UA at 15 bgs F 3 <br /> MDL=Method detection limit Q <br /> mg/kg=Milligrams per kilogram <br /> 1 iu4 <br /> Note <br /> TBA EtBE DIPE 1,2-DBA, 1,2-DCA,ethanol and methanol were reported below laboratory method detection limits � <br /> '7 <br /> MONITORING WELL DEVELOPMENT AND SAMPLING ; <br /> On December 3, 2003, SECOR field personnel developed and sampled groundwaterrL R <br /> monitoring well MW-67UA On January 16, 2004, Gettler-Ryan (G-R) field personnel , <br /> developed groundwater monitoring well MW-68A G-R sampled MW-68A on January 20, <br /> 2004 Approximately ten casing volumes of water were purged from MW-67UA, while z <br /> thirty-two casing volumes of water were purged from MW-68A, and the parameters <br /> collected Included pH, conductivity, temperature, and turbidity The G-R Field Data Report t ' <br /> and the field and laboratory procedures for development and sampling activities are <br /> Included In Attachment 6 al4 <br /> lis <br /> I ' <br /> 11Chevron110016211REPORTS120041UST Site Assessment Report doc <br />