College of Tropical Agriculture and Human Resources
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Hawaii Water Quality Extension Program
nps 319 | statewide | project 02-118
 
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Natural Resources Extension

 
Project Name: Agricultural Road Stabilization Demonstration Project
ASO Log No.: 02-118
Start/End Date: September 2001 to July 2003
Federal Funds: $60,000.00
Matching Funds: $60,000.00
Contractor: David Nobriga and Michael Tulang
Hawaii Association of Conservation Districts
919 Ala Moana Blvd. Rm 309
Honolulu, HI 96814
Phone: (808) 586-4389
Fax: (808) 586-4300
Email: HIACD@juno.com
Background/
Overview:
Traditionally, unpaved agricultural roadways have been considered a major cause or source of sediment pollution of Hawaii’s streams and near shore coastal environments. As such, sediment induced water quality problems in affected watersheds which support agricultural operations have remained difficult to resolve. Water quality problems in those watersheds range from persistent turbid waters to extremely stressed reef communities ultimately leading to devastated near shore ocean environment. In addition, sediment on agricultural roads has been identified to be a major source of particulate pollution during periods of strong winds. Fugitive dust has adversely affected residential communities located adjacent to agricultural cropping areas, thus threatening the health and safety of people living in those communities.
Objectives/Goals: Establish demonstration sites throughout the state to measure the effectiveness of various soil and fiber amendments available on the commercial markets. These sites will provide valuable data and educational opportunities. Test tacking agents, polymers and different forms of calcium chlorides to control erosion, reduce sediment and fugitive dust production.
Methods Employed: • Explore cost-effective ways of using dust suppressants on unpaved roads do decrease the potential amount of pollution runoff entering coastal waters
• Evaluate the relative cost effectiveness of geltrek, calcium chloride, and soybean oil mixed with lecithin as chemical dust suppressants on various soil types
Pollutants of Concern: Dust
Watershed: Not defined in final report
Size of Project: • Grace Pacific quarry in Makakilo, island of Oahu
• Maui Land & Pineapple agricultural land, island of Maui
• Pioneer Hi-Breed Research Center in Waimea, island of Kauai
Affected Water Bodies: Not described in final report
Deliverables: • Dust suppressant information
• Soils information
• Hard copy of a PowerPoint presentation

 

       
 
 
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Cooperative Extension Service programs, conducted in cooperation with the U. S. Department of Agriculture, are provided to the people of Hawaii without regard to race, sex, age, religion, color, national origin, ancestry, disability, marital status, arrest and court record, sexual orientation, or veteran status. The University is an equal opportunity / affirmative action institution.