The Environmental Protection Agency is starting big-money, long-term cleanups at 10 Superfund toxic waste sites and putting 10 other sites aside for later [refers to Central Wood Preserving Co., Mallard Bay Landing Bulk Plant, Newton County Wells, DeRewal Chemical Co., Conroe Creosoting Co., Eureka Mills, Pownal Tannery, Jennison-Wright Corp., Continental Steel Corp., Marion Pressure Treating Co., Atlas Tack Corp., New Hampshire Plating Co., Mohawk Tannery, McCormick and Baxter Creosoting Co., Hart Creosoting Co., Jasper Creosoting Co.]