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URS <br /> N N <br /> Mr. Robert McClellon <br /> January 4, 2005 <br /> Page 5 <br /> Full Scale Installation <br /> Following the receipt of the analytical data for the soil vapor samples collected during the pilot test,a <br /> soil vapor extraction system will be sized, and an appropriate soil vapor treatment system will be <br /> selected.The potential remedial alternatives were provided in the remediation plan dated October 22, <br /> 2004. We will install the selected remedial alternative following your approval. If a remedial <br /> alternative is selected where an ATC is required, we will complete a permit application for ATC and <br /> submit the ATC to you and the SJVAPCD for review and approval. Upon receipt of approval of the <br /> ATC, we will install the selected remedial alternative. <br /> SCHEDULE <br /> Geophysical Field Investigation <br /> The fieldwork for the geophysical survey is scheduled for completion in early January 2005, weather <br /> permitting. The fieldwork is expected to be completed within five to six days. Ponding water on the <br /> site may affect the results of the geophysical survey;therefore,the geophysical survey will have to be <br /> delayed if water is ponding on the site. A geophysical report is expected within three weeks after the <br /> completion of the fieldwork. <br /> Additional Probe Installation and Extraction Well Installation <br /> Following receipt of the geophysical report, we plan to install the three additional probes and two <br /> extraction wells. We will obtain your approval on the location of these probes and wells before <br /> installing them. <br /> Pilot Test <br /> One to two weeks following the installation of the probes and extraction wells, the methane <br /> concentrations within the probes and extraction wells will be measured. Based on this information,the <br /> pilot test unit will be sized and selected with an appropriate soil vapor treatment system.We expect to <br /> complete the pilot test within five days. The analytical results for the soil vapor samples are expected <br /> within three weeks. Following receipt of the analytical report,the remediation system will be sized,and <br /> an appropriate soil vapor treatment system will be selected and sized. A permit application for an ATC <br /> will be prepared and submitted to the SJVAPCD for approval. It is expected that the application permit <br /> for the ATC will be completed within three to four weeks and that the SJVAPCD will process the <br /> permit in approximately three months. <br /> Full Scale Installation <br /> Following receipt of the permit to operate,the approved remedial and treatment system will be ordered <br /> and installed.We anticipate that the system could be delivered within four to six weeks and installed <br /> within two to four weeks of equipment delivery. <br /> K:\Wprocess\25532\WorldEnterprise\2emediation Plan\010405-Ltr.doc <br />