SITE INFORMATION AND CORRESPONDENCE

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August 8, 1995 Page 2 } 800 E. Kettleman, Lodi ARCO Facility 2076 PHDIEHD contact - Mary Meays �. Recent groundwater sample results continued to confirm that groundwater has not been impacted by residual soil contamination at this time. 1612 Hammer Lane, Stockton ARCO Facility #548 PHSIEHD contact - Mary Meays The pending tank removal was discussed and accommodations which are planned to provide access in new tank basin to investigate and remediate soil contamination. The investigation by the neighboring property owner was discussed and access to the property will be again requested to better define the extent of off site groundwater contamination. 2908 W. Ben Holt, Stockton ARCO Facility #2133 PHSIEHD contact - Mary Meays Discussed status of the remediation system which is now fully operational. Some modifications to the air sparge system were made to prevent possible migration of contamination which resulted from an unauthorized release associated with the northern pump island. The response to the release consisted of bailing of product which was evidenced in MW10. The second quarterly report should be submitted within two weeks and will describe mitigation activities. /85 East Louise, Lathrop ARCO Facility #6080 PHS/EHD contact - Linda Turkatte PHSIEHD has received the work plan to destroy the three monitoring wells at the site but needs a completed permit application and the associated $60 fee. Once the wells are destroyed a closure letter will.be issued to indicate no further action with regard to the former waste oil tank at the site. 225 South Cherokee Lane, Lodi ARCO Facility #760 PHSIEHD contact - Linda Turkatte The soil borings/vapor wells proposed for the alley way to the north and northeast of the site were installed in ,lune of 1995. The next submittal for this site is to be a Corrective Action Plan, which will include the design specifications of the remedial system proposed for the site. In order to implement this proposal by the anticipated start date of December 1995, the permitting and construction of the system will continue to proceed at this time. The latest round of monitoring at the site revealed the groundwater concentrations, flow direction and gradient to be consistent with previous historic observations. 3425 N. Tracy Blvd., Tracy ARCO Facility # 2093 PHSIEHD contact - Harlin Knoll The catalytic oxidizer unit previously at ARCO station #434 will be moved to this site. The start up date is expected to be December 1995. The construction process will begin in late August 1995. The additional analytical testing of the product evidenced in monitoring wells ATR#3 and ATR#8 was conducted and it appears the product in monitoring well ATR#8 may have been manufactured by ARCO. The product in monitoring well ATR#8 has increased and weekly bailing will be started as a mitigation measure. The abandonment of monitoring well ATR#12 was discussed. A permit application and the associated $60 fee needs to be submitted. The fate of monitoring well ATR#6 was also discussed as this well is not currently providing essential information and is located in an area that be impacted by the street widening activities proposed for Tracy Boulevard.