Spent wood preservatives

In addition to the four characteristics of hazardous wastes, the ERA has established three hazardous waste lists hazardous wastes from nonspecific sources (e.g., spent nonhalogenated solvents), hazardous wastes from specific sources (e.g., bottom sediment sludge from the treatment of wastewaters from wood preserving), and discarded commercial chemical products and off-specification species, containers, and spill residues. 

Both the volume of use and the amount of money spent demonstrates our dependency on pesticides. In 1997, the EPA reported that 4.6 billion pounds of pesticide were used in the United States, which is equivalent to 4.4 pounds per person. Of this, almost 1 billion pounds, with 600 different active ingredients, were used in agriculture and another 0.26 billion pounds used by homeowners, government, and industry on lawns and gardens. This use alone amounts to an expenditure of 11.9 billion, of which 8.3 billion is spent by agriculture. Wood preservatives add another 0.66 billion pounds and disinfectants 2.5 billion pounds (Table 6.1). Worldwide 5.7 billion pounds of agricultural-based pesticides were used at a cost of 37 billion (see presentation for details). 

This list includes sludge, still bottoms, wastewaters, spent catalysts, and residues. These are generated by specific industrial processes, such as wood preserving, petroleum refining, and organic chemical manufacturing. These are designated by prefix K [5,6]. 

Waste waters, process residuals, preservative dripage, and spent formulations from wood preserving processes generated at plants that use creosote formulations... 

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