This report documents the second phase of a feasibility study to determine the need for a computerized emission projection and allocation (CEPA) system to assist State and local air pollution control agencies in conducting air quality analysis. This phase entailed the review and evaluation of four existing emission analysis systems: the Air Quality for Urban and Industrial Planning (AQUIP) system, the Computer-Assisted Area Source Emission (CAASE) gridding procedure, the Engineering-Science Air Quality (ESAQ) system, and the Metropolitan Washington Council of Governments (MWCOG) model. The evaluation consisted of a description of the CEPA requirements without reference to any existing systems, a comparison of the existing packages to those requirements, an identification of deficiencies, an estimate of effort required to remove those deficiencies, an evaluation of the effort needed to develop an entirely new system, and an assessment of the potential savings to be realized by employing a CEPA system in place of manual procedures. The report recommends that EPA proceed with stepwise modification of the Engineering. Science model by first documenting the model and making it available. After that, EPA could then begin to modify the model to correct deficiencies uncovered by the contractor. The contractor estimates that the cost of modifying the Engineering-Science model ranges from $235,000 to $355,000. This was the lowest cost of all the options considered.

"Energy Research and Development Administration, Argonne National Laboratory, Energy and Environmental Systems Division. "September 1977." Includes bibliographical references (p. 190-191). "EPA-450/3-77-028." "Interagency agreement no. D7-0077."