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Mr. Jeffery Wong <br /> Page 3 <br /> After stabilization of pH, temperature, and electrical conductivity, and water level recovery of at least <br /> 80%, samples will be collected into appropriately labeled containers, and placed in an ice chest <br /> refrigerated to a temperature of 4°C for shipment to a State-certified laboratory under chain of custody <br /> protocol. Sample analysis will consist of TPHg, BTEX, gasoline oxygenate additives, DCA and EDB <br /> using the above EPA methods. <br /> Protocols and Safety <br /> All field activities performed at the site will be conducted in accordance with the Quality <br /> Assurance/Quality Control Plan and Site Specific Health and Safety Plan included in Attachments B and <br /> C, respectively. <br /> Drill cuttings will be placed on and covered with plastic sheeting. Water generated from well purging <br /> and equipment decontamination will be contained in labeled DOT approved drums. The soil cuttings <br /> and drums will be stored on site pending laboratory results and proper disposal. <br /> Permitting and Schedule <br /> Well construction permits, encroachment permits and associated fees will be submitted to the appropriate <br /> agencies subsequent to approval of this workplan. Following receipt of the permits, fieldwork will be <br /> scheduled. The Workplan to conduct an ozone injectionpilot test will be submitted as a Workplan <br /> Addendum. <br /> In response to your request for additional information regarding "Well E" (EHD corresp, April 3, <br /> 2002), please note that only four water supply wells (A through D) were identified within a 2000 foot <br /> radius of the site. The location plotted as "E" was identified as a church. Tabulated data and source <br /> information are included in Table 3. Locations are identified on Figure 5. <br /> Please contact Ground Zero at your earliest convenience if you have any questions or comments <br /> regarding this report. <br /> Respectfully, <br /> Ground Zero Analysis <br /> T�2 Sean Garvey, GREGORY P. � <br /> Staff Geologist /J gTqF <br /> No. 5023 <br /> Gregory P. Stahl, RG 5023 OF 0A11F���\� <br /> CA Registered Hydrogeologlst 264 <br /> cc: Mr. and Mrs. John Ferraiolo <br /> Mr. Marty Hartzell, CA Regional Water Quality Control Board <br /> Ms. Marla Nahorn, Environmental Closures <br /> \\GZA FS\SYSO1\Data\GROUNDZE\HARRYS\Reports\Workplans\WKPLAN 3MWS_RFS.doc <br />