CC PACKET 01161996 - Laserfiche WebLink

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01/02/96 17: 12 ^p612 937 5822 1iE5111UUll }'KU SVS L�_oUUa DRAFT—Silver lake Center EAW Page 6 January 2, 1996 been adequately addressed and the site file would be fully closed upon receipt of the post burn analysis. sTlfes Plus- Phase lusPhase f ESA: According to an Apache Mail representative,a gasoline and waste oil USTs were located east of the southeast comer of the existing Tires Plus building and removed In the early 19809. The tanks were utilized by the former Montgomery Wards service station. Braun recommended a Phase 2 ESA to evaluate the potential for soil and groundwater contamination: Phase 2 ESA:'A petroleum release associated with the tank apparently occurred. The release was reported to the MPCA duty officer on May 12, 1994 and assigned Leak Number 00007375. • Limited Remedial lnvestigaflon Report(March 23, 1995): Braun conducted an additional Investigation to determine the horizontal and vertical extent and magnitude of the remaining soil contamination and to assess potential groundwater impacts. Multiple soli borings revealed• limited contamination. Braun concluded that risk to potential groundwater and vapor receptors from the petroleum release at the site appears unlikely. No drinking water wells are located In the impacted unit within 1/2 mile downgradlent of the site and a significant confining layer appears to exist between the Impacted unit and the upper drinking water aquifer. The source of contamination at the alto has essentially been eliminated with the removal of the UST systems: No vapor risk associated with manmade structures was Identified based on the available data. In a letter dated May 4;1995 the MPCA`VPIC staff stated that the former Montgomery Wards petroleum tank release has-been adequately addressed and closed the release alto file: (2) Hazardous Waste Traps o • Tires Plus Phase i ESA: One.waste trap was located in the northeast corner of the Tires Plus building. Braun recommended that the contents of the waste trap be removed and the Integrity of the trap be evaluated. Phase 2 ESA: On June 20;1994;the contents of this 500-gallon trap were removed and disposed off-site. A visual.Inspection-did not reveal any evidence of leakage. Old Gamble Store Phase i ESA: One waste trap was located on the northern side of the old Gamble store space located in the northeastern corner of the main mall building. Braun recommended that the contents of the waste trap be removed and the integrity of the trap be evaluated. Phase 2 ESA: On June 20,1994,Braun inspected this actively used 500-gallon trap and the visible portions appeared to be In good condition. On September 28,1994,the contents of this trap were removed and disposed off-alto. A visual Inspection did not reveal any evidence of leakage. 3) Asbestos Phase f ESA: Previous asbestos abatement efforts have occurred in the eight boiler rooms and commons area of the main mall building."According to reports documenting these earlier activities, several concerns were Identified,including evidence of airborne asbestos beyond the abatement containment areas. To determine the scope and magnitude of the asbestos dust contamination, Braun collected ten dust samples in the areas that underwent asbestos abatement. Nine of the dust samples contained asbestos. Braun recommended that all surfaces In the eight boiler rooms and Westwood Professional Services,Inc. ��'