- Point source inventories for modeling should be compiled at a minimum by
country, State/Tribe, county, facility, stack, and source category code (SCC) but often are further
subdivided by “point” and “segment”(see references below to point-source inventory
development). The point source data must include information on the location of sources (e.g.,
latitude/longitude coordinates); stack parameters (stack diameter and height, exit gas temperature
and velocity); and operating schedules (e.g., monthly, day-of-week, and diurnal).
Stationary Area Sources- Stationary-area source emissions data should be compiled by
country, State/Tribe, county, and SCC. The most current stationary source emissions methods
can be found at http://www.epa.gov/ttn/chief/.
On-Road Mobile- On-road mobile source emissions should be estimated using the most current
version of the U.S. EPA MOBILE model ( http://www.epa.gov/omswww/m6.htm), and for
California, the most current version of EMFAC (http://www.arb.ca.gov/msei/msei.htm) in
concert with vehicle miles traveled (VMT) data representative of the time periods modeled. The
MOBILE model allows modelers to override default settings to obtain a local-specific on-road
inventory, and modelers should consider using these options to improve their inventories. Onroad
emissions and VMT should be compiled at least at the country, State/Tribe, county, and
SCC level, though modelers may optionally compile and use data for individual road segments
(called “links”). The link approaches requires starting and ending coordinates for each road link.
As noted in Section 17.3, link-based emissions can be based on Travel Demand Models (TDMs).
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castellano: DISPER CUSTIC DESCAR RADIA italiano:
deutsch: DIS CUS DES RAD
castellano: DIS CUS DES RAD english: DIS CUS DES RAD
português: DIS CUS DES RAD italiano: DIS CUS DES RAD
français: DIS CUS DES RAD