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i <br /> Harding Lawson Associates <br /> "i <br /> represent the chemical concentration in the soil. On the basis of the removal of the <br /> majority of impacted soil, the reported depth to groundwater, the low concentration and <br /> mobility of motor oil, and the distance to water supply wells in the site vicinity, the <br /> potential for migration of these petroleum hydrocarbons to the groundwater, and <br /> impacting the beneficial use of the groundwater as a water supply, appears to be <br /> �s minimal. <br /> In summary, HLA concludes that a release of petroleum hydrocarbons had <br /> occurred at the site in the vicinity of the dispenser and had impacted the soil in that <br /> area. The majority of the soils containing petroleum hydrocarbons appear to have been <br /> removed from the site and the remaining petroleum hydrocarbons in the soil appear to <br /> have a minimal potential to adversely impact local groundwater quality or the beneficial <br /> uses of the groundwater. <br /> �r <br /> �F <br /> T19461-H 18 of 20 <br /> 1 ' <br />