These results are preliminary. A final report is available. This project will refine and generalize the described methodology to develop road mileage and VMT estimates statewide. Finally, the presence of loose, upwind saltating particles substantially increased emission rates. The initial draft has been prepared and the final report is expected in early February, 2000.
Several projects are underway to produce 'complete picture' species profiles.
The results will provide detailed chemical species data and size fraction data for emission sources. Testing will include complete chemical analysis of gaseous species, particulate species, and semi-volatile, or condensible species. California State University, Fresno, NASA Ames Research Center, UC Riverside, CSU Monterey. Late summer, 2000. Measure ammonia emissions from nitrogen based agricultural fertilizer application in California's San Joaquin Valley.