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L <br /> yeologicAIT"HicsInc. Page 9 <br /> City of Escalon(Escalon) <br /> Project No.: 1114.2 <br /> LSeptember 29,2003 <br /> L C3 / <br /> • The site is covered with asphalt, thereby limiting vertical migration via filtration. <br /> • Groundwater is more than 30 feet below the soil contamination. <br /> • Soil stockpiled at the site from the tank excavation was aerated prior to being <br /> backfilled into tank pits lower the concentration of constituents in the soil. <br /> L • MTBE was non-detect in soil samples collected from B-13 through B-15 and EZ 2-1 <br /> through EZ 2-3. <br /> • There are no domestic wells within a 2000-foot radius for any residual <br /> contamination to impact. <br /> • Natural attenuation is assumed active at this site since contaminant release. <br /> L16. WET or TCLP Tests Results <br /> Not applicable. <br /> L <br /> 3.0 LINIITATIONS <br /> This report was prepared in accordance with the generally accepted standard of care and <br /> practice in effect at the time Services were rendered. It should be recognized that <br /> definition and evaluation of environmental conditions is an inexact science and that the state <br /> or practice of environmental geology/hydrology is changing and evolving and that <br /> standards existing at the present time may change as knowledge increases and the state of <br /> the practice continues to improve. Further, that differing subsurface soil characteristics <br /> can be experienced within a small distance and therefore cannot be known in an absolute <br /> sense. All conclusions and recommendations are based on the available data and <br /> information. <br /> LThe tasks proposed and completed during this project were reviewed and approved by the ZD <br /> local regulatory agency for compliance with the law. No warranty, expressed or implied, <br /> is made. <br /> L <br /> L <br /> L <br /> L <br />