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- <br /> i <br /> ltd' <br /> i <br /> VZO <br /> l;3 <br /> 3U ES 39E33g T Ra <br /> Sh.11 Oil CompattY California <br /> 3725 Tracy Soulavard,Tracy, <br /> Delta project No.4o.0-012 <br /> page 14 <br /> The following conclusions have been made based upon the results obtained from this investigation: <br /> • Petroleum hydrocarbons have been 'identified near the existing underground storage tanks <br /> : at approximately 11 feet below grade. <br /> a Ground water at the site has not been impacted by petroleum hydrocarbons. <br /> a petroleum hydrocarbons have been identified in the soil beneath the proposed new <br /> underground storage tank location at approximately I I feet below grade. <br /> LQ RECOM&1FIdDATIQh!S <br /> The following recommendations are presented based upon the results of this investigation: <br /> Soil removal during excavation of the existing tanks and the new tank pit will be stockpiled <br /> on site and composite samples will be taken in order to designate disposal. <br /> Water derived from the dewatering of the new tank excavation will be discharged to the <br /> Tracy sanitary sewer upon their approval. <br /> r " e A Delta geologist will be on site during tank closure to obtain soil samples at the direction <br /> of the San Joaquin County Health Department. <br /> 7 HED LE <br /> Delta proposes to begin tank closure as soon as approval of the work described herein is obtained. <br /> Delta will submit a tank closure report after renovation of the site is complete. <br /> i <br />