17.6.2 Collect available data and models for each sector needing projections

The EIIP projections document (referenced previously) provides a starting point for this

step. The EIIP document provides the majority of information about sources of data on growth

and controls. This section supplements that document.

For each sector needing projections (and in particular for the priority sectors), emissions

modelers should collect and review growth and control information. As noted in the EIIP

document, the sources of such information depend upon the sector of interest. New data and

approaches beyond those in the EIIP document are available and provided here; likewise, new

data and approaches will become available subsequent to the publication of this document. The

information provided here is a snapshot of information that will grow and adapt over time, and

emissions modelers should seek out such new information as part of this step.

For sectors and regions with lower priority for consideration (as described in Section

17.6.1), emissions modelers can rely on available default data. For sectors and regions that are

important to modeling the nonattainment area, emissions modelers should spend additional effort

obtaining improved information from other modeling applications (such as modeling done by

RPOs or other States) or developing the improved information themselves.

In addition to the sources of control information about non-EGU point and stationary area

sources listed in the EIIP projection document, EPA has provides control assumptions with its

modeling data used for promulgating air quality rules. For example, emissions growth and

control assumptions were provided with the Clean Air Interstate Rule (See

http://www.epa.gov/air/interstateairquality/pdfs/finaltech01.pdf for additional information on

obtaining actual data files) More current information is usually available than what is available

from EPA, which is best obtained by working with state and local regulatory officials for the SIP

modeling region. The remainder of this section focuses on sources of growth information.


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