Laserfiche WebLink
f <br /> URS <br /> Mr. Robert McClellon <br /> October 3, 2005 <br /> Page 2 <br /> SJCEHD. On October 12, 2004, URS installed four dual gas migration monitoring probes (VW-5, <br /> VW-6, VW-7, and VW-8)at the World Enterprises site shown on Figure 1. <br /> URS prepared a remediation plan dated October 22, 2004, for the World Enterprises site located in <br /> Stockton, California on behalf of RadioShack. Following the submittal of the remediation plan,Tandy <br /> Corporation received a Notice and Order dated October 25, 2004,from SJCEHD. Following review of <br /> the remediation plan, SJCEHD transmitted review comments to Tandy Corporation in a letter dated <br /> November 23, 2004. Morgan Lewis on behalf of Tandy Corporation submitted a Notice of Appeal to <br /> SJCEHD on November 23, 2004. Following the Notice of Appeal, a meeting was held at the Stockton <br /> Courthouse offices on December 9, 2004, with representatives from URS and Morgan Lewis repre- <br /> senting RadioShack and SJCEHD. At this meeting, it was agreed that a remediation plan addendum <br /> would be transmitted to SJCEHD in early January 2005. A remediation plan addendum dated <br /> January 4, 2005, was transmitted to SJCEHD for review. The contents of the remediation plan and the <br /> remediation plan addendum contained the nature and extent of the contamination, the proposed field <br /> activities (geophysical survey, additional probes installation activities, extraction well installation <br /> activities,pilot test activities, and full scale installation activities)and proposed schedule. <br /> URS met with representatives from SJCEHD to discuss the field activities to install the extraction <br /> wells and the additional probes at the site as described in the remediation plan and remediation plan <br /> addendum and to accept the completed application for a well/pump permit and associated permit fees <br /> for these activities. Revisions to the field activities were discussed. A letter dated February 22, 2005, <br /> was transmitted to SJCEHD to confirm our understanding of the agreed revisions. <br /> FIELD ACTIVITIES <br /> The following two sections describe the field activities to install the monitoring probes and the <br /> quarterly monitoring activities. <br /> Monitoring Probe and Extraction Well Installation <br /> On June 1 and 2, 2005, URS installed two soil vapor extraction wells (EW-1 and EW-2) and two gas <br /> migration monitoring probes (VW-9 and VW-10) at the World Enterprises site (Figure 1). The <br /> extraction wells and probes were installed using a truck-mounted drill rig equipped with hollow stem <br /> augers from Gregg Drilling & Testing, Inc., of Martinez, California. Prior to the installation of the <br /> wells and probes, URS obtained approval from Mr. Tasiopoulos of SJCEHD for the extraction well <br /> and probe locations. Mr. Tasiopoulos was present during the mandatory portion of these activities. <br /> The borings were installed in the following order: EW-1, EW-2, VW-9, and VW-10. A clean <br /> California-modified split-spoon sampler fitted with brass liners was utilized to collect the soil samples. <br /> Soil samples were collected at 5-foot intervals. The field geologist logged the soil from each boring <br /> using the Unified Soil Classification System. The boring logs for each boring are attached. The <br /> geological cross-sections of the site are shown on Figures 2 and 3. <br /> K:\Wprocess\25532\WorldEnterprise\Quarterly Rpt\3Q05\Ju1y.doc <br />