REVISED BUDGET CALCULATIONS A number of revisions were made to the budgets that were proposed on November 7, 1997. Two of the draft spreadsheets that have been posted (SIPBUDGT.XLS, SIPSIZEB.XLS) contain the latest draft of unit-specific information for electric generation and non-electric generation point sources that was used to calculate budgets. The third spreadsheet (BUD_SUM.XLS) contains the revised seasonal budget componenets and total budgets based on the changes described below. This information is draft, and changes may be made to correct potential errors or in response to comments. A general description of the changes made follows. ELECTRIC GENERATION (SIPBUDGT.XLS) Addition of Sources - Proposed budgets did not include electricity generating sources < 25 Mwe and some non-utility electricity generators. These have been added to this budget component. Growth Factors  Growth factors were based on IPM runs (2000 and 2010)  Some of the 2010 generation was inadvertently omitted from the original calculation  Revised growth factors have been developed that include all of the expected generation. NON-ELECTRIC GENERATION POINT SOURCES (SIPSIZEB.XLS) Addition of Sources  Certain sources that were identified by OTAG as being utility sources were determined not to be utility sources and were inadvertently omitted from this budget component  Omitted sources were added to the non-electric generation budget component Application of RACT  RACT should have been applied to all medium sources in the 23 jurisdictions  For the proposed budgets, RACT was actually applied only where it was required (i.e., nonattainment areas without waivers and the OTC)  Budgets have been revised to apply RACT to all medium-sized sources Note: There are two worksheets in the file SIPSIZEB.XLS, one for large sources and one for medium sources. Small sources (< 1 tpd) are included in the budget but are not listed in this file.