SITE INFORMATION AND CORRESPONDENCE

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r Teichert Aggregates page 2 29099 S. Mac Arthur Rd, Tracy Teichert was advised that EHD does not have authority to require investigations at non-UST sites, but may provide evaluations and comments to persons willing to voluntarily comply with our recommendations as staff time allow. In order for EHD to determine our extent of involvement, you should make your final objective known at the beginning of the process. Persons requesting 'closure' letters or letters stating No Further Action/Investigation Required at the end of the investigation need to make this clear in the initial work plan. The recently received proposal did not contain the above noted items. Please re- evaluate the proposal and determine your final objectives and the level of regulatory agency involvement needed. A boring permit may be issued after the well permit application and fee are submitted, but EHD will not be able to issue a 'closure' letter. As a reminder, borings, wells, hydraulic push-points must be properly abandoned (cement grouted, bentonite slurry or pellets, etc) as required in San Joaquin County Well Standards. The proposal to "cap borings until proposal is made and plan of action is executed"is not acceptable. Sites that wish to have 'closure' letters at the end of the investigation/remediation phase where EHD does not have authority to provide closure should seek evaluation and oversight from either the Central Valley Regional Water Quality Control Board (CVRWQCB) or the Department of Toxic Substances Control (DTSC). Please contact Michael Infurna at (209) 468-3454 if you have any questions or wish to discuss the site. Donna Heran, REHS, Director Environmental Health D' 'sion Michael J. Infurna Jr., enior REHS Margaret Lagorio, REHS LOP / Site Mitigation Unit IV Supervisor MI/ c: R. Dawson — Planet Industries, 3289 Luyung Dr, Rancho Cordova 95742