2/13/1980 CONSERVATION COMMISSION Minutes

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CONSERVATION BOARD MEETING Wednesday, February 1.3, 1980 Present: Pauline F. DeLory, Chairperson Dorothy G. Studley, Vice Chairperson Barbara Sloane Charles Buckingham Wayne Tavares Richard Cohen Kennetb Pecci Before the meeting was called to order, Charles briefly discussed the gas spill. Charles: The process was started on October, 1979, evacuating 60 yards of material and hand-spread it over this poly vinal ground cover four to six inches thick and turned it over monthly. It was inspected in January, 1980. After analysis of the sand and every- thing, it was found that it was good enough to be burried in the landfill with no chance of further contamination. Evidentally through bacterial action and interaction, the gasoline had been removed. Dick: What was the chemical they used? Charles: None. Pauline: Just natural air or evaporation possibly. Charles: And they made no provisions to cover during rain or anything else except to berm up the sides so it could prevent run-off. Pauline: Well, what did they have underneath -- poly vinal? Charles: Poly vinal. And this April or May, they have a larger leak which has taken place and they are going to remove the material and spread it in the same way and see if they get the same results. Dick: How deep was it? Charles: He didn't say. Pauline: It was a regular gas station tank -- thousands of gallons at least. Charles: The only positive thing that they know is that their first estimate of the amount of loss was too low. Pauline: Did they figure out how far that was equivalent to a plume spread out? Charles: There is toomany intervening factors. 'If there is no large draw down there in the area, the plume reacts in one way. If there is a draw down from a well being pumped, the reaction is different. They are claiming now thatthe movement of water and contami- nants in the water can be affected from as far as a mile away. There is really too many variables in there to make a conclusion. ill