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Rainwater Car Wash Page 3 <br /> 420 West Yosemite Avenue October 24, 2011 <br /> Manteca, California 95337 <br /> 06/22/01 Date of Interim Remediation Work Plan — June 2001 submitted by Advanced <br /> GeoEnvironmental, Inc., that proposed groundwater "pump and treat" for interim <br /> remediation. The work plan is available on Questys, file XR0006846. <br /> 01/21/02 Date when the groundwater extraction system began operation to inhibit further <br /> off-site migration of the fuel-impacted groundwater plume. <br /> 04/03/02 Date of Work Plan Addendum submitted by Advanced GeoEnvironmental, Inc., <br /> that proposed the installation of 7 continuous multi-chamber tubing (CMT) <br /> groundwater monitoring wells. The work plan is available in the Unit IV files. <br /> 04/10/02 Date of Report of Compliance — Discharge of Petroleum-impacted Groundwater <br /> submitted by Advanced GeoEnvironmental, Inc., that documented the discharge <br /> of petroleum hydrocarbon-impacted groundwater to the sewer after the <br /> groundwater had undergone passage through three 2,000-pound granular <br /> activated carbon vessels and one 2,500-pound media of Sun Solve, a liquid- <br /> phase filtration to adsorb methyl tertiary-butyl ether (MTBE). The report is <br /> available on Questys, file XR0006845. <br /> 06/24/02 Date of Quarterly Report — First Quarter 2002 submitted by Advanced <br /> GeoEnvironmental, Inc., that described the initial start-up of the 'pump and treat' <br /> system using EW-1 to extract the groundwater. The report is available on <br /> Questys, file XR0006841. <br /> 09/26/02- Dates when CMT monitoring wells MW-7 through MW-13 were installed. <br /> 10/09/02 <br /> 04/18/03 Date of Multi-level Monitoring Well Installation Report — Fourth Quarter 2002, <br /> submitted by Advanced GeoEnvironmental, Inc. describing the installation of <br /> CMT wells MW-7 through MW-13. The report is available on Questys, file <br /> XR0006943. <br /> 11/10/03 Date of letter from the California Regional Water Quality Control Board <br /> requesting that Mrs. Francis Lee of French Cleaners conduct a soil vapor survey <br /> since the dry cleaning solvent tetrachloroethene (PCE) had been detected in <br /> groundwater at the Rainwater Car Wash site. The letter is available in the Unit III <br /> files. <br /> 04/21/08 Date of Addendum to Interim Remediation Work Plan —April 2008 submitted by <br /> Advanced GeoEnvironmental, Inc., that proposed the installation of two <br /> additional groundwater extraction wells. The addendum is available on <br /> GeoTracker. <br /> 01/14-15/10 Dates when extraction wells, EW-2 and EW-3, were installed. EW-2 was <br /> screened between 20 and 45 feet bsg, and EW-3 was screened between 15 and <br /> 40 feet bsg. <br /> 02/17/10 Date of Groundwater Extraction Well Installation Report — First Quarter 2010 <br /> submitted by Advanced GeoEnvironmental, Inc., that described the installation of <br /> groundwater extraction wells EW-2 and EW-3. The report is available on <br /> GeoTracker. <br />