1600 MADISON ST 2016-01-01 MF Import

� A' Other Potential Sources of Contamination: �one. Potentially Sensitive Receptors (ecological and human): Downstream there are residential. backyards that are lower than the tank bottom and that any spilled fuel could drain under�round. The park, bird, fish and a��imal life in the area could be affected by� contaminated water. Appro�:imatel�• two hundred homes exist in the square mile east of the spill site which could be affected by surface dra_nage. On S�ite Waste Handling Practices (current und historical): Unknown. VII. Site Inspection (prior to tank removal): Surface Inspection for Release Signs: tdone found Fire Station was completely paved. VeriFy Physical Layout Issue Same as As-Built Plan: location plan. Area west of See tank Fill Status of Tank: 1" of gasuline sludge in bot�om prior to removal of tanl:. Compare Fill Records With Inventory Records: Iveekly Lank gauging records prior to tank removal indicate no more than the D.O.E . allowable limit. Tank Size (determined by measurement): �+S" diameter � 12'. Inspect Site !'or Above and Below Ground Utilities: See City Utility Chart attached. VIII.A„sessment Summary: On May 15, 1991 the City's contractors, S.M.E . Corporation, in performing a tightness test pushed a one-hole rubber stopper into the fill tube of the subject tank and could not get the tank to hold fuel in the tube itself. A second test was attempted on Dlay 17, to checic for large air pockets in the tank. In doing so the tank had to be "topped" and �aas f'ound to be empty and reported b.• O'Day Petroleum, the disti•ibutor. On Saturday, May 18, 1991, the S.M.E . Corporation removed the tank and 270 Yd3 of gas-contaminated soil and stockpilr.d it on and under plastic in the Fire Stations' east parking lot. The txnl: was found to be one footc into glacial ti11 and during the excavations a 3 gallon pocket of gasoline was discove.red and e:ccavated with the other contaminated soils at abouC L�ao feet under tank. As the contractor went deeper the gasoline vapor trails �oming off the dump trucl: got less as we went down to the machines 15 foot limit. The contractor excavated up to the souLh bay concrete apron and to within 5 feet from the fire sLation building on th� east.