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Air Quality Models

URBEMIS 2007 Emission Model

URBEMIS 2007 version 9.2.4 estimates emissions caused by land use projects. It quantifies mobile source, area source, and construction emissions based on the size and type of land use. Program includes a component to quantify mitigation measures. The program is available for download from the URBEMIS website at: www.urbemis.com.

CALINE 4 California Line Emission Model

CALINE 4 is a dispersion model used to estimate the concentration of CO along roadways and intersections. Contact your District CEQA representative or Download at www.dot.ca.gov/hq/InfoSvcs/EngApps/software.htm

DTIM2 Direct Travel Impact Model

DTIM2 is a model used on large projects to estimate mobile source emissions using data from a transportation demand model. Contact your local Transportation Planning Agency (See GAMAQI, app B).

Motor Vehicle Emission Inventory Model

The Motor Vehicle Emission Inventory Model (MVEI7G) is used to develop mobile source emission inventories for air quality plans and also can be used to estimate emissions from large development plans. Download at: www.arb.ca.gov/msei/mvei/mvei.htm or contact the District.