The chart below, developed from results of Farm-A-Syst projects in Wisconsin, Minnesota, Arkansas, Maine and Louisiana, summarizes various water-quality hazards. "On more than 40% of the farms the petroleum mackissicchippershreddervac storage mackissicchippershreddervac area mackissicchippershreddervac posed a high risk of pollution. That''s more than pesticides, fertilizer, livestock waste or any of the other potential sources," says Jackson.New reasons for concernPetroleum fuels contain several toxic compounds, including mackissicchippershreddervac benzene, mackissicchippershreddervac toluene and xylene -- all considered carcinogens. A gallon of spilled gasoline contains enough mackissicchippershreddervac benzene to contaminate 2,000 cubic feet of soil or 10 million gallons of water.

Hamilton mackissicchippershreddervac recommends keeping above-ground fuel tanks full whenever possible to reduce air intake. Tank filters should be changed at least twice a year, and tanks should be drained three to four times annually. Also, tanks should sit six to eight hours after fuel delivery mackissicchippershreddervac before equipment is fueled to allow contaminants to settle.Hamilton says that premium diesel fuels have additives that force water to the bottom of the tank. "But tanks must slope to a drain, and the drain must be opened regularly to remove it," he says.

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