This report provides preliminary information on the costs and credits associated with hazardous waste co-firing in industrial boilers. The main objective is to identify and evaluate the costs/credits inherent in current hazardous waste co-firing practices, plus the additional costs that may be incurred as a result of more stringent emissions limitations. An overview of current hazardous waste/industrial boiler co-firing practices is provided. This overview addressed the types of waste now being burned in boilers, the generic designs and capacities of boilers now being co-fired, and the types of air pollution control device (APCD) retrofits that may be required in the advent of air emissions regulations. Parametric cost estimate methods are provided for: (1) waste handling equipment addition, (2) combustion system retrofit, (3) APCD retrofit, (4) incremental O&M costs, and (5) fuel savings and waste disposal credits. The cost estimating approach is designed to account for differences in waste characteristics, boiler design, capacity, and waste/fuel co-firing ratio. Finally, cost/credit calculations are presented for two hypothetical waste co-firing scenarios. These calculations are presented to illustrate how the information provided in this report can be used; no conclusions concerning the economy of waste co-firing are intended.

"February 1985." Includes bibliographical references (leaves 52-53). Microfiche.