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r) <br /> I� <br /> August 9, 1994 ARCO Meeting Page 4 <br /> i <br /> 225 South Cherokee Lane, Lodi ARCO Facility #760 <br /> PHS/EHD contact - Linda Turkatte <br /> Installation of the soil boringsNapor wells proposed for the alley way to the north and neortheast of the site <br /> is delayed pending access from the property owner. The current property owner of the alley is unknown <br /> because the City of Lodi has been in the process of returning this land to adjacent property owners. ARCO <br /> and/or consultants will research the current property owner and request access. <br /> The air treatment system for the remediation at this site vill be transferred from another site. ARCO will. <br /> evaluate all applicable parameters(nearby water wells,total contaminant mass available to leach and impact <br /> groundwater, etc) to decide which site has priority for the air treatment system. <br /> Quarterly reports were discussed in general and an effort will be made to sumbit the reports in a timely <br /> manner and to provide adequate notice prior to the sampling events. <br /> 3425 N. Tracy Blvd., Tracy ARCO Facility # 2093 <br /> PHS/EHD contact - Harlin Knoll <br /> The site has documented peunleum hydrocarbon soil and groundwater contamination dating back to April <br /> 1987. The contaminated groundwater plume has migrated off-site as evidenced in samples collected from <br /> MW8. Hydraulic control of the groundwater is necessa>ly to prevent further off site plume migration. <br /> Additional off-site investigation is required to define the full extent of soil and groundwater contamination. <br /> A "Final Remediation Plan" utilizing vapor extraction and possible groundwater extraction was submitted <br /> to this office in May 1993. Arco proposes to start-up the remediation system as soon as possible and to <br /> continue the off-site investigation characterizing the extent of contamination in the vicinity of MW8. Arco <br /> stated the off-site remediation may utilize the on-site vapor extraction system in the future. <br /> 25775 Patterson Pass Road, Tracy ARCO Facility #6100 <br /> PHS/EHD contact - Margaret Lagorio <br /> Mr. Robert Vieira has not .-et responded to the letter se t in April 1994. In order to define the extent of <br /> soil contamination, another access agreement letter will be sent to Mr. Robert Vieira, for drilling on his <br /> property. <br /> Remediation of this site will be postponed until equipmen from another site in San Joaquin County becomes <br /> available. <br /> 501 W. Kettleman Lane, Lodi ARCO Facility #434 <br /> PHS/EHD contact - Margaret Lagorio <br /> Brown & Caldwell will submit a plot plan of the proposed changes in the locations of the confirmation <br /> borings and other items previously requested. The installation of the monitoring well to replace MW2 will <br /> be scheduled immediately. Any of the confirmation borings on site and off-site (for which access <br /> agreements and PHSIEHD permits have been obtained) shall be drilled at that time. <br /> Brown&Caldwell will pro%ide a description of the biofi�ter being used to remediate the low concentrations <br /> of hydrocarbons emitted from the operating vapor extraction system. Matthew Turner of Brown&Caldwell <br /> agreed to meet PHS/EHD staff at the site to explain the components of the biofilter. The vapor extraction <br /> system will continue to operate until cleanup is deemed complete and/or the system is no longer effective <br /> as deemed by PHS/EHD. <br />