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The
AQMD prepared the CEQA Air Quality Handbook in April 1993, and made minor
revisions in November 1993. Copies of this handbook can be obtained
by contacting AQMD's Subscription Services at (909) 396-3720.
While
the Handbook is under revision,
it is recommended that the lead agency follow the calculation
methodologies in Chapter 9 and the Appendix to Chapter 9 in the
Handbook. Other methodologies can be used as long as
documentation is provided regarding the source and applicability to
the project.
Lead
agencies should also be aware that the on-road mobile source emission
factors in Table A9-5-J1 through A9-5-L are obsolete. The most
current on-road mobile source emission factors can be found at the
California Air Resources Board (CARB) website at www.arb.ca.gov
The
AQMD also recommends that the lead
agency avoid using the screening tables in the Handbook’s Chapter 6
for the following reasons:
1. The tables
were derived using an obsolete version of CARB's mobile source emission factors inventory (EMFAC7E)
instead of the currently approved version (EMFAC2007), and
2. The
trip generation characteristics of the land uses identified in the
Chapter 6 screening tables were based on the fifth edition of the ITE
Trip Generation Manual. The most current version of this manual is the
sixth edition.
In conjunction
with the Handbook, the AQMD developed the Mobile Assessment for Air
Quality Impacts (MAAQI) to calculate emissions from land use
projects. The AQMD
recommends against using the MAAQI model for the same two reasons
identified above. The AQMD recommends using other approved
models for this purpose, such as the
URBEMIS 2007 model.
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