Author: Gauri SeshadriPublisher:
ISBN:
Category : Dirt roads
Languages : en
Pages : 334
Book Description
Fugitive Dust Transport from Unpaved Roads in Arid Climates
Author: Gauri SeshadriPublisher:
ISBN:
Category : Dirt roads
Languages : en
Pages : 334
Book Description
FUGITIVE DUST TRANSPORT UNDER ARID CONDITIONS
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
The results obtained on the Jornada road northeast of Las Cruces suggest that for the light wind, midday conditions tested much of the dust is transported vertically and little of the PM10 and PM2.5 is redeposited near the road. [...] To be effective, a plan for Doña County must consider the unique local conditions, including the arid climate, the developments and agriculture in the river valley, and the transport of particulates across the international border. [...] S.- Mexican border • Dust suspension and transport from unpaved roads; the road dust measurements were taken at various distances from the edge of the road and at various heights above the ground 4 RESEARCH METHODOLOGY/APPROACHES This section describes the study location, the locations of the monitoring sites on the road, the instrumentation used to measure ambient PM10 concentrations and the test. [...] The basic goal was to collocate the DustTraks with the OPC and the TEOM and to see how the three different instruments varied in their PM10 values. [...] The data at fixed heights were used to calculate the constants for an exponential dust profile at the three distances by the least squares fit of the log-transformed data to the equation parameters.
Emissions from Vehicles, Tailpipe and Vehicle Re-entrained Road Dust
Author: Dongzi ZhuPublisher:
ISBN: 9781124020402
Category : Air
Languages : en
Pages : 166
Book Description
Emissions from transportation are some of the largest sources of urban air pollution. Transportation emissions originate from both the engine-through combustion processes and non-tailpipe re-suspended road dust emissions induced by vehicle travel on unpaved and paved roads. Gaseous and particulate emissions from transportation sources have negative impacts on human health, visibility and may influence the global radiation balance. Fugitive dust emissions originating from vehicle travel on paved and unpaved roads constitute a significant fraction of the PM10 in many areas of the western US impacting their attainment status of National Ambient Air Quality Standards. The research used three novel instrument platforms developed at the Desert Research Institute. The In-Plume Emissions Test Stand (IPETS) was designed to provide characterization of exhaust emissions from in-use individual vehicles or engines by analyzing air as close as 1 m from the exhaust port. Real-world emission factors can be quantified by in-plume measurements and provide more realistic measures for emission inventories, source modeling, and receptor modeling than certification measurements. The Testing Re-entrained Aerosol Kinetic Emissions from Roads (TRAKER) provides an effective alternate approach to the EPA AP-42 road dust emissions estimation techniques by sampling 1000s of km of roads versus isolated 3 m sections. The Portable Deposition Monitoring Platform (PDMP incorporates PM and meteorological instruments to characterize the downwind change in particle concentrations to define depositional losses in different environments. The research outcome provides important knowledge for understanding diesel engine emissions, road dust emissions and aerosol deposition process near road sources.
Permanent Regulatory Program Implementing Section 501(b) of the Surface Mining Control and Reclamation Act of 1977
Author: United States. Office of Surface Mining Reclamation and EnforcementPublisher:
ISBN:
Category : Mining law
Languages : en
Pages : 356
Book Description
Effectiveness Demonstration of Fugitive Dust Control Methods for Public Unpaved Roads and Unpaved Shoulders on Paved Roads
Author: Final Study Plan for Effectiveness Demonstration of Fugitive Dust Control Methods for Public Unpaved Roads and Unpaved Shoulders on Paved Roads
Author: Fugitive Dust from Vehicles Using Unpaved Roads
Author: Robert Jennings HeinsohnPublisher:
ISBN:
Category : Air
Languages : en
Pages : 29
Book Description
Northwest Colorado coal
Author: United States. Bureau of Land Management. Colorado State OfficePublisher:
ISBN:
Category : Coal
Languages : en
Pages : 600
Book Description
Surface Mining Control and Reclamation Act of 1977 Section 501(b) Regulatory Program
Author: Airborne Particles
Author: National Research Council (U.S.). Subcommittee on Airborne ParticlesPublisher:
ISBN:
Category : Science
Languages : en
Pages : 376
Book Description