1600 MADISON ST 2016-01-01 MF Import

I. Clean-up Action: A. Action Description: pn yay 15. 1991 the Citg• of Everett's tank testin� contracto•c attempted twice to "top up" the gasoline tank �_ Fire Stat.ion No. o into the fill tube for the test and failed. It is believed that in the testing the contractor placed a one-hole rubber stopper in the fill tube, produced enough pressure, about 5 p•s.i. to blow out the sludge in the alread9 rusted holes, about 10-1/8" to 1/�" diametQr holes, in the center of the tank bottoc. nr.d the City lost over 1,000 gallons in two days. The leak was disrovered by the fuel distributor F•hen �e filled the tank for an air voids test on Fr:day, May 17. Two hours later he was called back to pump the remainder of gas in the tank which was about 106 gallons of unleaded gas. The L-otal amount o� fuel lost was about 1050 gallons. On Saturday, May 18, the City hired S.M.E. Corporation of Tacoma, and they removed the tank and 270 yu3 of contaminated soil, stockpiling the soil in 6 mil. plastic in the east parking lot of Fire Station No. �• The contractor turned over the tank and many rust holes were observed in the bottom center of �he tank as noted abo�-e. It was then disposed. The excavation was completed on Monday-, May 20. The contractor excavated to 15 f_et deep, the maximum limit of his backhoe, south to the 5 ft. high concrete wall on the south property line and east to the south ba� apron of the fire house. Since the lower 9 feet of the pit was in ver� dense glacial till the slopes of the pit were left at 1:10 on the east and south sides (See appended pit section in appendis B.11. The contractor excavated west and north until the smell of the contaminated soil reduced considerablY• On MaY 18, the vapor trails coming off the dump truck Was quite visible and on May 20, when the excavations were completed the vapor trails Nere almost unreadable. On about May 23, the contractor lined the pit with 6 mil. plastic and backfilled Hith imported 5/8" coarse agqregate. The south briy entrance has not been repaved pendinq Department of Ecology's final disposition on this clean-up action. 1