In 2012, the EPA MOVES model became a requirement for air emissions modeling on transportation projects. In addition to MOVES, EPA regulations require dispersion modeling using one of two allowable…
November 2012 Proposal: Effective December 20, 2012, a new era in air quality analyses for transportation projects begins as regulatory requirements issued by the US Environmental Protection Agency (US EPA)…
Current US DOT guidance specifies 140 to 150 thousand in average daily traffic (ADT) volume as the effective threshold, applicable across the nation, for conducting quantitative assessments of mobile source…
Section 1113 of MAP-21 addresses the Congestion Mitigation and Air Quality (CMAQ) program and provides for “optional programmatic eligibility” as follows: (1) IN GENERAL.—At the discretion of a metropolitan…
In 2012, a template for NEPA/conformity documentation for project-level air quality analyses was completed as NCHRP 25-25 (Task 71), (See “Templates for Project Level Analysis Using MOVES, CAL3QHC/R and AERMOD”,…
Templates for modeling of various typical transportation project types would be developed in this proposed study. The modeling would be conducted using the latest updates to US EPA models and…
Regulatory-mandated air quality analysis, such as SIP analysis, transportation conformity determinations, and project level evaluations typically require the use of multiple models (model chain) to analyze a complex chain of land use…
Federal and state objectives for streamlining project development may be supported in general by the development and implementation of programmatic agreements (PAs) and, where federal requirements for transportation conformity apply,…
The recently completed NCHRP 08-83 study (see excerpt below) on “Analytical Travel Forecasting Approaches for Project-Level Planning and Design” addressed project-level transportation modeling in detail but only addressed air quality…
While there are a number of published studies that provide information to state and local agencies about the potential emission reduction benefits of control strategies that are designed to reduce…