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PM2.5 24-hour 35 µg/m3 98th percentile Rounded to the nearestĪnnual 15 µg/m3 annual mean Rounded to the nearest 0.1 TRAQS applies default NAAQS values and rounding conventions based on the following table:ĬO 1-hour 35 ppm* Not to be exceeded more Spot Analyses in PM2.5 and PM10 Nonattainment and Maintenance Areas" Tier Approach of the "Transportation Conformity Guidance for Quantitative Hot. See Appendix L – Calculating 24-hour PM2.5 Design Values Using a Second See Appendix K - Examples of Design Value Calculations for PM Hot-spotĪnalyses of the "Transportation Conformity Guidance for Quantitative Hot-spotĪnalyses in PM2.5 and PM10 Nonattainment and Maintenance Areas" ( /Exe/ZyPdf.cgi?Dockey=P100NN22.pdf) ρ¬ Background Concentration (µg/m3): This value must be specified by the user and ρ¬ Round Design Values To (µg/m3): This field displays the rounding convention available NAAQS value will be displayed on the grid.

ρ¬ Show only above NAAQS: When this box is checked, only Design Values above the The table, provided at the end of this help page, shows the NAAQS values ρ¬ NAAQS (µg/m3): This field displays the US NAAQS value for the selected pollutant and av-Įraging period. ρ¬ Get Default: Press this button to get default values for NAAQS and rounding options for theĬurrent pollutant and averaging period (see table NAAQS and Rounding Convention).

This section contains options for the calculation of the design value as follows: Press this button to export the contents of the current grid to a csv file. ρ¬ Date and Time: This is the date and time the AERMOD concentration occurred. Design values greater than the NAAQS value will be displayed in red color. ρ¬ Design Value (µg/m3): This column shows the calculated design value (Design Value =ĪERMOD Concentration + Background Concentration) rounded to the specified rounding ρ¬ Background Concentration (µg/m3): This column is populated by the user after theīackground Concentration value is specified under the Design Value Calculation Op. Specific concentrations in micrograms per cubic meter at the receptor location. ρ¬ AERMOD Concentration (µg/m3): This column contains the AERMOD calculated pollutant. ρ¬ Y Coordinate (m): This column contains the Y UTM coordinate in meters for all receptors. ρ¬ X Coordinate (m): This column contains the X UTM coordinate in meters for all receptors. This grid contains the following columns:

The Grid View tab displays a grid with the contents of the Plotfile for the currently selected Plot-įile List item. Model is run and are produced for a specific averaging period and high value combination.

Plotfiles contain pollutant specific concentration results are generated when the AERMOD This section shows a list of the pollutants that are being modeled and their respective AERMOD Plot-įiles. The Grid View tab of the AERMOD Results window contains the following options: Under the TRAQS main window, press the AERMOD Results button to access the results from the Because it is UNCORRECTED material, please consider the following text as a useful but insufficient proxy for the authoritative book pages. Below is the uncorrected machine-read text of this chapter, intended to provide our own search engines and external engines with highly rich, chapter-representative searchable text of each book.