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An existing SVE system is already in place at the site and associated piping has been installed <br /> to the well head at MW-8. <br /> • Well MW-8 was constructed for the purpose of SVE remediation. Prior to well installation, <br /> Apex anticipated the possibility of using well MW-8 as a remediation alternative for the site. <br /> • Well MW-9 is located in the proximity of well MW-8 (65-feet to the north) and Apex <br /> anticipates observing SVE influence at well MW-9. <br /> Specifically, Apex proposes a short-term, 48-hour SVE pilot test be performed on well MW-8 to <br /> determine the feasibility of SVE as a remedial alternative. Groundwater monitoring well MW-8 <br /> is a 4-inch diameter well. Remediation piping was installed from well MW-8 to the remediation <br /> compound during UST removal and over excavation. The proposed SVE pilot test would consist <br /> of connecting the existing piping to MW-8 and the existing RST Remediation Unit. <br /> Once the analytical data and field data are reviewed and evaluated, a"Revised Final Remediation <br /> Plan"will be prepared documenting the results of this investigation including a well search. <br /> Apex originally planned to utilize dual phase extraction, that is groundwater extraction in <br /> combination with SVE. However, Ms. Margaret Lagorio with the San Joaquin County <br /> Environmental Health Division informed Apex that no sanitary sewer system exists in the area. <br /> Therefore, no means is available to discharge the water extracted during the pilot test. Apex will <br /> look at the results of the SVE pilot test and determine if dual phase extraction is necessary to <br /> remediate the site. if the results of the pilot test warrant dual phase extraction, Apex will apply <br /> for a NPDES permit to discharge the treated water to a nearby stream. <br /> SITE SAFETY PLAN <br /> A Site Safety plan (SSP) will be prepared and will be on site during all field activities. All on- <br /> site work will be conducted according to the SSP. The SSP will contain information on the <br /> properties of the hazardous materials known to be on the site. This information is equivalent to <br /> the contained within Material Safety Data Sheets. <br /> A copy of this Workplan was submitted to: <br /> Mr. Mark List <br /> Central Valley Regional Water Quality Control Board <br /> 3443 Routier Road, Suite A <br /> Sacramento, California 95827-3098 <br /> Ms. M. Lagorio <br /> San Joaquin County Environmental Health Division <br /> P. O. Box 2009 <br /> Stockton, California 95201 <br />