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Overview
Basics
Basics
Quantify the cost effectiveness of different road dust control strategies applied in the Lake Tahoe Basin.
Completed
2007
2007
2011
$403,306
Alan Heyvaert (alan.heyvaert@dri.edu)
07/14/2017
07/14/2017
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| Location Information | Location Notes |
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Organizations
EIP Details
EIP Basics
EIP Basics
04.01.01.0039 - P001: Examination of Dust and Air-borne Sediment Control Demonstration Projects
Performance Measures
Expected Performance Measures
Expected Performance Measures
No expected performance measures set for this project.
Reported Performance Measures
Reported Performance Measures
No annual performance measure accomplishments entered for this project.
Funding
Expected Funding
Expected Funding
$403,306
$403,306
$0
| Total | |||
|---|---|---|---|
| Unknown or Unassigned | $403,306 | $403,306 | $0 |
| Grand Total | $403,306 | $403,306 | $0 |
Reported Expenditures
Reported Expenditures
| Total | 2011 | 2010 | 2009 | 2008 | 2007 | |
|---|---|---|---|---|---|---|
| Southern Nevada Public Land Management Act (Pacifi... | $403,306 | $80,662 | $80,661 | $80,661 | $80,661 | $80,661 |
| Grand Total | $403,306 | $80,662 | $80,661 | $80,661 | $80,661 | $80,661 |
Photos
Other Details
Watersheds
No watersheds set for this project.
Threshold Categories
-
Science project to research the dust and air-borne sediment control.
Local and Regional Plans
No Local and Regional Plans set for this project.
Related Projects
Related Projects
No Related Projects set for this project.
External Links
Notes
Notes
| 07/10/2017 7:08 AM | System | Objectives: This project report describes measurements and results collected in the Tahoe Basin that investigate the transport, deposition, chemistry, and emission control strategies of road dust that is a primary component of both the upland loading and atmospheric deposition sources. |
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| 07/07/2017 11:07 AM | System | Findings: Within 5 m downwind of the road, PMlarge (Total suspendable material - PM10) accounts for half of the airborne mass emissions. PMcoarse (PM10 - PM2.5) account for the other half with PM2.5 representing less than 0.5%. The bulk of airborne emissions will deposit within a few kilometers of the road. Phosphorous (a nutrient for algal growth in the lake) airborne concentrations in re-suspended road dust were greatest in fine particles. Phosphorus did not appear to be associated with most of the road dust mass since 85% of roadside phosphorus was in PM2.5 size fraction compared to only 20% of the crustal species. *** See www.fs.fed.us/PSW/partnerships/tahoescience for additional findings. |
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| 07/07/2017 11:07 AM | System | Management Implications: • On an annual cost effectiveness basis, street sweeping costs $0.6 per kg PM10 emissions reduced. This estimate does not include capital costs of the sweeper valued at ~$250K each. These operational costs are less than 0.5% when compared with roads resurfacing of fair conditions roads ($300 per kg PM10 emission reduction) or resurfacing of poor condition roads ($700 per kg PM10 emission reduction). • Road segments that employed anti-icing pretreatment on roadways had lower EE values by a factor of two. While being correlated with cleaner roads, anti-icing provides other benefits including reduced salt application, reduced abrasive application, and better utilization of resources since brine can be applied during routine shifts up to three days in advance of a storm. Although not rigorously quantitative, cost benefits are estimated to be on the same order as sweeping (~$0.6 per kg PM10 emissions reduced). Reduced PM benefits of anti-icing need to be assessed in the context of roadside vegetative health since the anti-icing material may be more toxic to plants than the traditional sand mixed with salt. • Roads with paved shoulders or barriers that prevented entrainment of material from the sides of roads had 50% lower EE than did roads with narrow (less than 3 feet) or unpaved shoulders. Shoulder improvement costs 10%-20% of road resurfacing and may prove to reduce airborne emissions. In comparison, ASAP Sweeping and anti-icing are substantially less expensive and more likely to provide significant emission reduction benefits. • Emission control strategies should require that not only primary roads, but all roads, be swept after snow storms to recover applied abrasive material. |