Practices for Project-Level Analyses for Air Quality (2021) / Chapter Skim
Currently Skimming:
Pages 28-33
The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.
From page 28... ...
28 The case examples that follow highlight the wide variety in practice with regard to project-level air quality analyses that exists across the nation. They describe the current status of air quality procedures and issues across the DOTs and how this topic (transportation air quality)
|
From page 29... ...
DOT Case Examples 29 Colorado has a complex transportation conformity situation. It has a large ozone nonattainment area and several smaller CO and PM10 maintenance areas.
|
From page 30... ...
30 Practices for Project-Level Analyses for Air Quality other inputs that are copied and used for plan and TIP horizon years with vehicle populations and speed bin VMTs created for each future year for each county, as appropriate based on conformity triggers. Related to transportation conformity, the state has three counties; two are nonattainment for ozone and one is in attainment for ozone, but in a complex conformity situation.
|
From page 31... ...
DOT Case Examples 31 contact with the air quality agency. The MPO obtains air quality data and appropriate inputs and shares them with DDOT, as needed, for a project-level analysis.
|
From page 32... ...
32 Practices for Project-Level Analyses for Air Quality MSAT concentrations would likely be most pronounced along the expanded roadway sections that would be built at [specify location] , under Alternatives [specify]
|
From page 33... ...
DOT Case Examples 33 In general, CO analyses are quantitative and qualitative, based on LOS and project description, while PM10/PM2.5 are qualitative because most of the maintenance/nonattainment areas have low traffic volumes as well as a low number of projects. Interagency consultation is required in PM10/PM2.5 areas.
|
Key Terms
This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
More
information on Chapter Skim is available.