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I f 10. List of Reports including Unautbarized Release Form, Quarterly Monitoring Reports, : i Well and boring logs, Problerri'Assessment Report, and Final Remediation Plan. The following reports related to investigations and remedial actions at the site have been submitted: ! • Problem Assessment Report for Investigation of Petroleum Hydrocarbons. WaterWork Corporation, January 1991. • Summary Report-Assessment of Petroleum Hydrocarbon Contamination of the T Groundwater, Resna, July 1992. • Summary Report/Additional Groundwater Investigation, Resna, July 1994. • Environmental Assessment Report. Groundwater Technology, Inc., June 1995. • Problem Assessment Reporf'and Corrective Action Plan, Ramage Environmental, May 1998.-- Environmental 998:Environmental Site Investigation Repod Ramage Environmental, November_ .1 2000. • Report, Additional Site Investigation, Ramage Environrmental, May 2002. Groundwater monitoring reports have also been submitted on a quarterly basis since the first monitoring well was`installed in August 1990. 'All `of the soil boring, monitoring well, and CPT boring'"logs are included in Appendix C. �,: 11. Best Available Technology'(BAT)'used or an explanation for not using BAT. SVE and air sparging were recommended as preferred remedial options by Groundwater Technology, Inc. iniJune 1995 and again by Ramage Environmental in May 1998. From June 1999 through June 2000, ENSR Consultants (ENSR) operated a SVE system at the site. Initially, ENSR extracted from VW-1 D, VW-1 S, VW-2S, VW-3, and VW-4. After,several months of operation, air sparging was J. 1). ¢ initiated in MW-1. According to:-ENSR,: the remediation system removed over 7,000 pounds of gasoline.hydrocarbons from the subsurface. An. July 2000, ENSR decommissioned the system and;removed the equipment:from the site.