Project Name: |
Agricultural Road Stabilization Demonstration Project |
Start/End Date: |
September 2001 to July 2003 |
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 |
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 |