SITE INFORMATION AND CORRESPONDENCE_FILE 2

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JAMES GIOTTININI PAGE 2 Argonne and Picardy The next phase of assessment field work proposed for this site is postponed until better weather conditions. The City of Stockton is ready to begin the work as soon as conditions allow. 1740 Houston Avenue The three monitoring wells installed at the site have shown nondetect results with the exception of the initial detections in the monitoring well MW#3. As this well is located near to and relatively downgradient of the source area (soil contamination at and near the dispenser area), it may be suitable for use as a verification well. As soil contamination is documented at 11 feet below grade and groundwater is first encountered at approximately 15 feet below grade, the need for source removal was discussed. The City of Stockton will submit a workplan for source removal within 60 days. PHS/EHD will conduct a two week public participation by posting a notice of findings at the site. 2500 Navy Drive The tank tracking records for tanks #2, #3, #4, and #6 and the rinsate manifests still need to be submitted to PHS/EHD to.complete the tank removals. The horizontal and lateral extent of the soil contamination evidenced during the removal of tanks#2 and #3 requires investigation. In addition, due to the shallow depth to water at the site, at least one monitoring well should be installed in the verified downgradient direction. i The City of Stockton will follow up with contact with the Municipal'Utilities Department and a workplan for the required assessment will be submitted within 60 days. PHS/EHD will send a separate letter for each tank without documented soil contamination at this facility indicating that underground tank requirements have been met and no further response actions will be required. j 4010 East Main A workplan to investigate the full extent of the remaining soil contamination at the site is needed. The workplan shall be submitted by March 15, 1995. 134 South Sutter The work shallinall as roceed originally g' y proposed. A permit will be issued for the work as soon as a permit application, signed by the driller, is received by PHS/EHD. The data to be generated from the proposed work will be used to evaluate if additional corrective action is necessary or if the site warrants closure certification. 1211 Swain PHS/EHD will issue a closure letter for the underground storage tank removed from I this site upon receipt of documentation on the final disposition of the stockpiled soil at the site. Bianchi Road Pumping Station The closure letter for this tank was mailed out on October 10, 1994. A copy of this letter is attached. t