ATTACHMENT A PROJECTED MISSIONS OF SULFUR DIOXIDE FROM RECONVERSIONS OF DOE'S PHASE I PLANTS UNDER ALTERNATIVE REGULATORY SCENARIOS ATTACHMENT A (Continued) PROJECTED EMISSIONS OF SULFUR DIOXIDE FROM RECONVERSIONS OF DOE'S PHASE I PLANTS Based on PERC data for April-September, 1979. Por plants that burned both oil and gas, the sulfur content assumes 100 percent use of oil. For plants that burned gas or oil and gas in 1979, the estimates of current emissions assume 100 percent use of oil. 5/ Dissions under the coal and oil SIP's are equal to the current emissions for the 30 unite that EEI specified would not reconvert. These units are indicated by a single asterisk (*). Estimates assume converting plants buy coal with a sulfur content equal to 80% of the coal and oil SIP's. 1 Capacities for converting units are derated to coal SIP's, capacities for non-converting unita are kept at present summer not dependable. Weighted average for entire plant. 2/ Data for July through September 1979, due to change in oil sulfur content since early 1979. 10/ Data for June through September 1979, due to change in oil sulfur content since early 1979. Emissions at current rate for plants converting. Emissions at the other plants on DOE's Phase I list are contained in other utilities. 2/ Based on ICF's Coal and Electric Utilities Model output for 1985. 3/ Other sources of SO2 are based on DOE's SEAS Model (Hi oil price Scenario), supplied by Art Roemer, Office of the Assistant Secretary for Environment, Division of Technology Impacts. Re: Supplement to Record of the May 28th Hearing on S. 2470 Dear Senator Jackson, On May 28, 1980, Mr. Samuel Huntington, accompanied by me, testified before the Senate Energy Committee in the one day of hearings dedicated to exploring potential increases in gross pollution emissions that might result from conversions pursuant to S. 2470. During that testimony a study by ICF Incorporated of potential increases in SO2 emissions from conversion was submitted for the plants on the Phase I list that we advocated to be retained. Several senators during and after the hearing expressed doubts about the accuracy of our using the same assumption that the Department of Energy used in its earlier studies. That assumption was that actual emissions when burning coal were more appropriately determined by estimating that utilities, on average, would burn coal averaging about 80% |