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not impact the groundwater beneath the Site. There ATTORNEY-CLIENT PRIVILEGE <br /> pathways at the Site. It was recommended that t ere were therefore no complete <br /> beneath the Santa Fe plete exposure <br /> pose a threat to Railway Company Site can safelyt.eum Hydrocarbons <br /> either groundwater resources or Present in soil <br /> investigations are place because the <br /> unnecessary, necessary and additional human populations Y d°not <br /> groundwater NO NO further <br /> Groundwater Sampling g at the Site is <br /> P � g and Analysis <br /> Six rounds of groundwater <br /> the Site was sampled and analyzed on January monitoring have been completed. <br /> February 28, 1992• ry 22, 1991 Groundwater from <br /> analyses for March 5, 1993; and M , Ma 2, 1991November <br /> beneath <br /> (1) low to medium May 19, 1993. The rounds o f am bn r 14 1991; <br /> ethylbenzene 5 boiling point h P g included <br /> petroleum hydrocarbons' ( ) xylenes, (6) high boilinghydrocarbons (2) benzene <br /> , and point hydrocarbons ' (3) toluene, (4) <br /> groundwater sampling (8) total recoverable (�) total <br /> g are presented in 'r Petroleum oil, extractable <br /> Table 1. The results of the <br /> Two sets of detects were re <br /> noted t samples SFW_ ported in the six rounds of samples. <br /> the high boiling 1, SFW-2, and SFW-3, taken On January 22, first set of detects was <br /> respectively. g P°int hydrocarbons. The <br /> The second detect was noted ncsamale ns were 64 ' 1991 and analyzed for <br /> analyzed for total extractable , 110, and 130 <br /> (ppb), petroleum hydroca bons.F The taken on <br /> May 19, <br /> analyzed <br /> concentration w ' and <br /> Partitioningas 64 kg/L <br /> Studies <br /> In April, 1993, ChemRisk® <br /> at depths of 13-14 feet beloobtained two soil samples containing Site-related by <br /> in the soil that ma partitioning <br /> drocarbons <br /> Y Partition into petroleum hydrocarbons constituents which were <br /> studies <br /> Of the hydrocarbons percolating <br /> bottles with no heads the soil samples g water. To maximize the Present <br /> pace, and rotatedle Here mixed with distilled potential g <br /> The samples were then filtered to collect the migration <br /> a ronin water, placed in sealed <br /> methylene chloride e isolate the g table for 48 hours at room tem <br /> aromatic h e v'ater. The filtered w temperature. <br /> ydrocarbons from the extractable organic material, water was extracted using <br /> chromatography. Final) Polar compounds the sample In order to separate the <br /> in the Sample, Y, to see if an y Ple was separated using column <br /> as concentrated and injectedlinto t ata gas Ch l <br /> Results showed that no Y log' levels <br /> Petroleum h gas chromatogram <br /> resulting chromatograms for the v, hydrocarbons had <br /> Figures 1 and 2 water extract and Tabora partitioned into the w <br /> respectively. The sample r5' water blank water. The <br /> P was then concentrated an are presented in <br /> additional 10-fold to <br /> G:ISTAFFUILLPIDELM.CLO <br /> 2 <br />