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Ms. Kerry Heckman - 2 - 22 November 2005 <br /> will not completely address the issue of an expanding groundwater plume. Please provide a <br /> Workplan for interim groundwater remediation, with an implementation schedule, by <br /> 3 January 2006. Also include a plan for installing additional deep monitoring wells if 1,2-DCA <br /> groundwater concentrations in the new wells do not show a significant decline after the next two <br /> quarters of groundwater monitoring (4th quarter of 2005 and 1St quarter of 2006). <br /> 2. The Monitoring Well Field Logs (Logs) for MW-12, MW-15 and MW-16 are not included in the <br /> Report. Future reports need to include Logs for all wells, with the explanations noted if <br /> problems occurred with sampling or accessing the wells. <br /> 3. The previous quarter's Log stated that free product(0.25 inch thickness) was observed in the <br /> bailer, that MW-16 was not sampled, and there are no notes in the Log or that report stating free <br /> product was removed from the well. The Monitoring and Reporting program R5-2005-0827 <br /> specifies: "...If present, monitoring wells with free phase petroleum (free)product or visible <br /> sheen shall be monitored for product thickness and depth to water only, and bailed to remove <br /> free product. A sample offree product (ifpresent) must be collected at least once and analyzed <br /> for classification of product and to obtain a chromatograph for comparison to dissolved <br /> hydrocarbons detected in other wells. The volume of extracted groundwater and petroleum <br /> product(if present) shall be provided in quarterly monitoring reports...." <br /> 4. Also,please work with your Connell Tire employees to ensure that all wells are accessible to <br /> your consultant for quarterly monitoring. <br /> By 3 January 2006, please submit the Workplan as described above. If you have any questions,you <br /> may contact me at(916)464-4615 or jjbbarton@waterboards.ca.gov. <br /> James L.L. Barton, P.G. <br /> Engineering Geologist <br /> cc: Mr. Mark Owens, State Water Resources Control Board, laboratory UST Cleanup Fund, Sacramento <br /> Mr. Michael Infurna, San Joaquin County Environmental Health Services, Stockton <br /> Ms. Kama Herringfeld, Herum Crabtree Brown,2291 W. March Lane, Ste.B-100' Stockton, CA 95207 <br /> Mr. William Little,Advanced GeoEnvironmental, Stockton <br />