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Fourth Quarter 2004 Groundwater Monitoring Report <br /> Moore Petroleum Bulk Plant,5491 F Street,Banta,California <br /> Page 4 <br /> r <br /> } November 10, 2003 -An addendum to the workplan was requested in a letter by'the SJCEHD to <br /> increase the scope of work to further delineate the hydrocarbon plume by installing additional <br /> monitoring wells. Technical data on the ozone system and the spacing of the sparge points.was k <br /> also requested. On January 14, 2004,Apex submitted a report titled,Addendum to Workplan for j <br /> Ozone Sparging, addressing the November 10, 2003'SJCEHD letter. <br /> January 14, 2004 - Apex submitted a workplan entitled, Workplan for a Limited Subsurface Site <br /> Investigation, proposing the installation of 5 additional groundwater monitoring wells. <br /> May 12, 2004 - The SJCEHD responded to the aforementioned Addendum to Workplan for <br /> Ozone Sparging, by approving the proposed ozone sparge wells and requesting application for <br /> drilling permits. <br /> 1 <br /> The SJCEHD directed that an addendum be made by June 1, 2004, to the Workplan for a Limited <br /> Subsurface Site Investigation, dated Jan 14, 2004, in order to define the vertical extent of' <br /> contamination. <br /> June 2, 2004 - SJCEHD requested an addendum to the workplan, proposing an additional cone r <br /> penetration testing (CPT)boring and relocation of the proposed groundwater monitoring well <br /> MW-17. <br /> September 2004 ;Apex installed and tested an SVE system with activated carbon adsorption as <br /> the control device. In addition, Apex installed an ozone generator system for eventual-ozone <br /> Sparging- <br /> ` December 8 - 10, 2004 - Apex personnel supervised the installation of 9 ozone sparge points.' ' <br /> . - 1 <br /> GENERAL SITE INFORMATION <br /> Site name: Moore Petroleum <br /> Site address: 5491 F Street, Banta, California <br /> Current property owner: Van De Pol Enterprises, Inc. <br /> Current site use: Petroleum Bulk Plant <br /> Current phase of project: Groundwater monitoring, active soil vapor remediation <br /> Tanks at site: Two aboveground storage tanks <br /> Number of wells: 9 monitoring wells; 2 monitoring/vapor extraction wells; 3 <br /> vapor extraction wells; i recovery well; and 10.ozone <br /> sparge'wells; 1 domestic well s <br />