ARCHIVED REPORTS XR0000129 - Laserfiche WebLink

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ethylbenzene and xylene (BTEX), total petroleum hydrocarbons (TPH) and lead concentrations "Simple Green" surfactant is applied by the Contractor to the tank, reportedly in an attempt to facilitate decontamination activity • July 1990, Spill report submitted to PHS/EHD • June 1991 Responsible party is identified, and Woodward-Clyde is selected to begin Remedial Investigation Remedial Investigation involves installation of wells MW-1, -2 and -3 • August 1991, Initial sampling of monitoring wells MW-1, -2 and -3 • October 1991, Remedial Investigation Report completed and submitted to PHS/EHD ' • November 1991 PHS/EHD responds to Remedial Investigation Report and requires ' quarterly groundwater monitoring and additional remedial investigation activities Hereafter, the month and year when the monitoring event was conducted is shown in parentheses • Fall 1991, First Quarterly Monitoring Event (December 199 1) • Winter 1992, Second Quarterly Monitoring Event (March 1992) • Spring 1992, Third Quarterly Monitoring Event (June 1992) • August 1992, WESTON Consultants retained to conduct a closure process for the former ' tank excavation, remove the fuel piping system, and continue groundwater monitoring Their investigation involves the installation of wells MW-4, -5 and -6 ' • October 1992, WESTON Consultants submits a September 30, 1992 Interim Report to PHS/EHD documenting additional soil remedial activities and demolition/removal of fueling system and associated infrastructure • Summer 1992, Fourth Quarterly Monitoring Event (October 1992) • Fall 1992, Fifth Quarterly Monitoring Event (December 1992) • Winter, 1993, Sixth Quarterly Monitoring Event (March 1993) SECOR International Inc (SECOR®) CRC Environmental Risk Management Inc N0026 001 01 add 2 November 30 1994