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| Project Name: | Contaminant Control by Cover and Residue Management on Agricultural Land in the Pearl Harbor Basin |
| ASO Log No.: | 93-095 |
| Start/End Date: | November 1992 to June 1996 |
| Federal Funds: | 90,000.00 |
| Matching Funds: | 36,000.00 |
| Contractor: | Samir El-Swaify University of Hawaii – CTAHR Department of Agronomy and Soil Sciences 1910 East-West Road, Sherman Lab Honolulu, HI 96822 Phone: (808) 956-8825 |
| Background/ Overview: |
In 1990 the Department of Health identified Pearl Harbor as a Water Quality Limited Segment requiring remedial action. Both surface and groundwater in the region are vulnerable to nonpoint source pollution (NPSP) from agricultural lands; the first is from runoff and erosional sediments and the second from leaching of mobile agrichemicals beyond the crop’s root zone. |
| Objectives/Goals: | To establish demonstration locations on agricultural lands in the basin in order to define and evaluate biological control and cultural practices capable of controlling erosion and subsequent NPSP into the estuary. |
| Methods Employed: | • Demonstrate alternative technologies involving the use
of live ground cover and crop residues • Monitor and quantify the benefits of the demonstrated technologies • Accelerate the transfer and adoption of recommended technologies by land users and agency clientele • Design a user-friendly, computer-based decision aid to recommend optimum management practices for NPSP control |
| Pollutants of Concern: | Turbidity, chemical, and biological contaminants |
| Watershed: | Pearl Harbor Waterbody Segment consisting of 10 subwatersheds: Manuwai, Halawa, Aiea, Kalauao, Waimalu, Waiawa, Waipio, Kapakahi, Waikele, Honouliuli, and Kaloi, island of Oahu |
| Size of Project: | Demonstration sites in crop fields |
| Affected Water Bodies: | Not described in report |
| Deliverables: | • “Water Quality Expert System (WATER
QUEST)” computer-based decision aid • photos of demonstration sites and techniques used • newsletter |
