2. Fugitive Dust Project Phase One The WRAP Emissions Forum contracted with a team of contractors lead by ENVIRON to produce regional PM 10 and PM 2.5 emissions inventories for wind blown dust from vacant lands by employing an empirical methodology. The WRAP Emissions Forum contracted with a team of contractors lead by ENVIRON to produce regional PM 10 and PM 2.5 emissions inventories for wind blown dust from vacant lands by employing an empirical methodology. These inventories are required by §309 of the Regional Haze Rule and will be used in air quality models as the basis for tracking progress in achieving the visibility goals under this rule. These inventories are required by §309 of the Regional Haze Rule and will be used in air quality models as the basis for tracking progress in achieving the visibility goals under this rule.

3. Fugitive Dust Project Phase One The original project, “Determining Fugitive Dust Emissions from Wind Erosion”, had two goals: The original project, “Determining Fugitive Dust Emissions from Wind Erosion”, had two goals: 1. to develop a general methodology, i.e., “The MacDougall Method”, and program code for estimating fugitive dust emissions from wind erosion; and, 2. to develop a PM2.5 and PM10 emissions inventories for the WRAP region modeling domain for 1996. The initial application of the methodology and the resulting products were to be treated as starting point with an expectation of making refinements. The initial application of the methodology and the resulting products were to be treated as starting point with an expectation of making refinements.

4. Fugitive Dust Project Phase Two Previous efforts related to this project were under the purview of the Emissions Forum; however, all future work will be the responsibility of the Dust Emissions Joint Forum. Previous efforts related to this project were under the purview of the Emissions Forum; however, all future work will be the responsibility of the Dust Emissions Joint Forum. The objective of the follow on project: The objective of the follow on project: 1. Improve upon the initial work by applying the methodology with data that is more up to date and at a higher resolution. 2. Assess model results based on adjustments to the modeling settings to determine if significant improvements can be achieved through global fine-tuning.

5. Fugitive Dust Project Phase Two This project will result in updated EIs for PM 10 and PM 2.5 for the WESTERN REGION. This project will result in updated EIs for PM 10 and PM 2.5 for the WESTERN REGION. Additionally, the model should be applied to high impact days (20% worst days), to determine the scope of application—monitoring emissions to determine what control strategies should be applied, when the control strategies should be applied, and the impact of such control strategies. Additionally, the model should be applied to high impact days (20% worst days), to determine the scope of application—monitoring emissions to determine what control strategies should be applied, when the control strategies should be applied, and the impact of such control strategies.

6. Fugitive Dust Project Phase Two The goal of the project is to improve upon the original project, “Determining Fugitive Dust Emissions from Wind Erosion” (AKA, “The MacDougall Method”), and to produce revised PM 10 and PM 2.5 emission inventories for fugitive dust from wind erosion of vacant land based on wind tunnel studies.

7. Fugitive Dust Project Phase Two – Study Area The geographic area for this project is the WESTERN REGION, which is identical to phase one.

8. Fugitive Dust Project Phase Two – Refinement Specifications Apply calendar year 2002 meteorological hour-by-hour data at 12km X 12km resolution. Apply calendar year 2002 meteorological hour-by-hour data at 12km X 12km resolution. Apply more current land-use data at 12km X 12km resolution, based on 1km X 1km resolution data. Apply more current land-use data at 12km X 12km resolution, based on 1km X 1km resolution data. Run Community Multi-scale Air Quality (CMAQ) with chemistry turned off. Run Community Multi-scale Air Quality (CMAQ) with chemistry turned off. CMAQ will determine mixing height based MM5 input. CMAQ will determine mixing height based MM5 input. Emissions will be calculated in the first boundary layer. Emissions will be calculated in the first boundary layer. Inventories will be generated for the WESTERN REGION, which shall match the original project. Inventories will be generated for the WESTERN REGION, which shall match the original project.

9. Fugitive Dust Project Phase Two Specific objectives include the following: 1. To demonstrate the “Empirical Method for Determining Fugitive Dust Emissions from Wind Erosion of Vacant Land”. 2. Ensure that the PM 10 and PM 2.5 emission inventories are developed using hour-by-hour meteorological data at 12km X 12km resolution for the WESTERN REGION. 3. Ensure that the PM 10 and PM 2.5 emission inventories are developed using a more current land-use dataset at 12km X 12km resolution for the WESTERN REGION. (Continued)

10. Fugitive Dust Project Phase Two 4. Produce a PM 10 emission inventory for the WESTERN REGION for calendar year 2002. 5. Produce a PM 2.5 emission inventory for the WESTERN REGION for calendar year 2002. 6. Produce a PM 10 emission inventory for the WESTERN REGION for the twenty percent (20%) worst days, high impact days, during calendar year 2002. 7. Produce a PM 2.5 emission inventory for the WESTERN REGION for the twenty percent (20%) worst days, high impact days, during calendar year 2002 (Continued)

11. Fugitive Dust Project Phase Two 8. Refine the general modeling methodology to calculate wind erosion, via datasets developed/compiled under terms of this contract. 9. Refine program code for PM 10 and PM 2.5 for emissions modeling.

12. Fugitive Dust Project