Detailed Scope of work-Detail Sheet Scope of Work.docx
DOCX document 13 MB Posted
- Attached to
- East Kauai Water System Maintenance
- Solicitation number
- B27000069
- Issued by
- Kauai County, Hawaii
About this file
This is a Detailed Scope of Work document for the East Kauai Water System Maintenance contract with the State of Hawaii, involving irrigation contractor services on government lands within the drainage basins of the North Fork Wailua River and Kapaa Stream in Kawaihau, Kauai. The scope encompasses maintenance and restoration activities across two primary complexes: the North Complex and Upper Kapahi Reservoir, and the South Complex and Wailua Reservoir. Services include cutting back and herbiciding tree and shrubbery overgrowth (primarily hau vegetation) from intake ditches, ditch banks, and surrounding areas; cleaning out debris and de-silting ditches to restore pre-existing contours; removing root ingrowths; mowing slopes; and maintaining access roads throughout the system. Specific work areas include the Kapahi Intake and Lateral 9 Supply Ditch, Upper Kapahi Reservoir embankments, Lateral 8 and 8A ditches, the North Fork Diversion and Wailua Reservoir Supply Ditch, Wailua Reservoir dam slopes, the Main Transmission Line with associated siphons and flumes, and multiple lateral ditches (Laterals 1, 2, 4/5, 6, and 7) with their respective control works and diversions.
The scope of work is presented as a comprehensive list of maintenance tasks organized by location and system component, with work to be conducted as needed to address public health and safety while ensuring compliance with all regulatory requirements. The document specifies work parameters such as cutting vegetation back 5 to 20 feet from various structures and ditch banks depending on location, herbiciding multiple areas, and de-silting efforts along the total lengths of designated ditches. No specific pricing information, set-aside provisions, incumbent contractor details, funding sources, or contract term conditions are detailed in this scope of work document. The document includes location maps and reference images identifying the various system components across the two complexes.
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Other files
| File | Type | Posted |
|---|---|---|
| AG-008 103D General Conditions (1.10.23).pdf | ||
| Scope of Work-Scope of Work East Kauai Water.doc | DOC document |
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Detailed Scope of Work
Conduct the following activities as needed to address public health and safety and comply with all regulatory requirements.
(Kapahi Ditch not functioning) Upper Kapahi Reservoir Kapaa Intake Lateral 9
A. North Complex & Upper Kapahi Reservoir
1. Kapahi Intake and Lateral 9 Supply Ditch,
a. Cut back and herbicide tree and shrubbery (hau) overgrowth from intake and ditch banks as required on each side total length to Upper Kapahi reservoir tunnel inflow at Growing Greens Nursery
b. Clean out debris, cut out root ingrowths and de-silt as required from within ditch to restore to pre-existing ditch contour, total length.
c. Herbicide ditch banks as required, total length.
d. Herbicide ten ( I 0) feet on each side of Flume/HD Pipe.
(Lower Kapahi Reservoir is Decommissioned) Lateral 7 Lateral 8A
2. Upper Kapahi Reservoir and Discharge/Lateral 8 to Lat 8 A Control Works
a. Old Upper Kapahi Reservoir Embankment, Kainahola Road -Herbicide upstream slope 20' each side of old outlet works and remove silt build up at check dam and inflow apron. Herbicide downstream slope access trail to outlet works ditch control gates @ Lat 8 & Lat 8-A as required.
b. New Upper Kapahi Reservoir Embankment & Outlet Channel- Herbicide downstream slope each side of outlet works of guinea grass and remove silt build-up in outlet channel from outlet works to old control works inlet apron @ old dam embankment.
3. Lateral 8 Ditch
a. Cut back and herbicide tree and shrubbery (hau) overgrowth from ditch banks five (5) feet on each side total.
b. Clean out debris, cut out root ingrowths and de-silt as required from within ditch to restore to pre-existing ditch contour, total length.
Kainahola Stream Konohiki Stream Lateral 8A
4. Lateral 8A Ditch Kainahola Stream Diversion Tunnel (Inflow only) ,
a. Cut back and herbicide tree and shrubbery (hau) overgrowth from twenty (20) feet upstream of tunnel to tunnel inflow and five (5) feet on each side of stream bank.
Midler Siphon
5. Lateral 8/Kulana/Midler Siphon Ditch,
a. Cut back and herbicide tree and shrubbery (hau) overgrowth from ditch banks five (5) feet on each side total length.
b. Clean out debris, cut out root ingrowths and de-silt as required from within ditch to restore to pre-existing ditch contour, total length.
Main Transmission Line Lat 1 North Fork Intake
B. South Complex & Wailua Reservoir
1. North Fork Diversion & Wailua Reservoir Supply Ditch,
a. Cut back and herbicide tree and shrubbery (hau) overgrowth from ditch banks ten (10) feet on each side total length from North Fork diversion to Loop Road culvert@ Wailua reservoir.
b. Clean out debris, cut out root ingrowths and de-silt as required from within ditch to restore to pre-existing ditch contour, total length.
c. Herbicide NF diversion works structure and ditch banks as required, total length.
Main Transmission Line North Fork Intake Diversion Access Road
2. North Fork Diversion Access Road,
a. Cut back tree and shrubbery (hau) overgrowth from roadway as required.
b. Herbicide as required, total length.
Dam slope Lat 1
3. Wailua Reservoir Dam, Down Stream Slope Maintenance,Dam slope and toe drain
a. Cut back and herbicide guinea grass, tree and shrubbery (hau, etc.) overgrowth.
b. Mow slope and toe drain areas as required.
c. Herbicide rock rip rap at toe drains, upstream slope and access roads.
4. Wailua Reservoir/Throw Away (TA) Control Works and Discharge Ditch,
a. Herbicide ditch banks as required, total length.
5. Wailua Reservoir/Lateral 1 Control Works and Lateral 1 Ditch,
a. Cut back and herbicide tree and shrubbery (hau) overgrowth from ditch banks five (5) feet on each side total.
b. Clean out debris, cut out root ingrowths and de-silt as required from within ditch to restore to pre-existing ditch contour, total length.
Pani 4/5?
Pani 6 Pani 2?
Kainahola Konohiki Lat 7 Flume 1
6. Main Transmission Line (MTL),
a. Cut back tree and shrubbery (hau) overgrowth twenty (20) feet on each side of invert siphon (Flume 1) and herbicide as required.
b. Herbicide open ditch banks as required, total length.
7. Main Transmission Line (MTL) Access Road,
a. Cut back shrubbery overgrowth and herbicide access road from Rice Gate (end of Kalama Rd) to siphon (flume 1) and flume 2 as required to provide reasonable access.
8. MTL/Lateral 2 Pani/diversion, (included in line item B.6. b (MTL) above)
9. MTL/Lateral 4/5 Pani/diversion, (included in line item B.6. b (MTL) above)
10. MTL/Lateral 6 Pani/Diversion, (included in line item B.6. b (MTL) above)
11. Lateral 6 Ditch,
a. Cut back and herbicide tree and shrubbery (hau) overgrowth from ditch banks five (5) feet on each side total.
b. Clean out debris, cut out root ingrowths and de-silt as required from within ditch to restore to pre-existing ditch contour, total length.
c. Herbicide ditch banks as required, total length.
12. Kainahola Stream Diversion (MTL Conduit)/Lat 7 Intake Ditch,
a. Cut back and herbicide tree and shrubbery (hau and misc.) overgrowth from twenty (20) feet upstream and downstream of diversion inflow and five (5) feet on each side of intake ditch bank from diversion to inflow of tunnel 1.
13. Lateral 7 Ditch
a. Cut back and herbicide tree and shrubbery (hau) overgrowth from ditch banks five (5) feet on each side total.
b. Clean out debris, cut out root ingrowths and de-silt as required, total length.
c. Herbicide ditch banks as required, total length.
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