Evaluation of Acid Deposition Control Policies for Washington
Used macro-ecologic model and regional acid deposition model for sulfates and nitrates to estimate effects of alternative control policies. Developed a regional emission inventory, inventories of the resources at risk, dose-effect functions, and economic cost functions from empirical studies and expert opinion. Estimated costs and benefits of control policies and made a statistical analysis of net economic values.

Waste Characterization and Incinerator Feasibility Study (North Slope Borough, AK)
Carried out a comprehensive study of existing municipal waste incinerator and waste disposal options for the Prudhoe Bay oil fields. Waste characterization and engineering studies showed the existing incinerator would require significant modifications to achieve economical operation. Feasibility studies examined the comparative capital and operating costs of large and small incinerators, recycling, composting, a new local landfill, and long haul to an existing landfill.

Emission Inventory and Meteorological Data Analysis (Dhanbad, Bihar, India)
An emission inventory was developed for the Jharia coalfields and surrounding region. Sources included coal mining, coal fires, a thermal power plant, other industrial sources, road dust, vehicular emissions and domestic sources, including cottage industries. An estimate was made of the annual total tons of coal burned, mined and processed into coke. Envirometrics also analyzed local meteorological data sets, all of which were missing critical data. Methods were developed for estimating the missing data using other parameters and known climatological patterns. Results from the emission inventory and air dispersion modeling were used to relocate portions of the population catastrophically impacted by underground and surface coal fires to areas of acceptable air quality.

Hazardous Waste Incineration in Cement Kiln (Rio de Janeiro, RJ, Brazil)
Prepared study of permitting requirements and system design and operation modifications necessary to meet US standards for incineration of hazardous wastes in a cement kiln.

Urban Air Quality Strategy in Asia
Developed study of the then-current technology in diesel vehicle particulate matter control, reviewed existing industrial emissions standards and advised national environmental agencies in the Philippines and Indonesia on the preparation of air quality implementation plans.