HomeMy WebLinkAboutCOM 0169.001 2006-2008 Proiect Summary
North Kona Sewer
North Kona Effluent Reuse Upgrade
1. Project Description:
A. These projects are newly formed as a result of the discontinuation ofthe Kohanaiki Project.
It will consist of design and construction for sewer infrastructure between the Kealakehe
Wastewater Treatment Plant (KWWTP) to Hina Lani St., effluent reuse infrastructure
between KWWTP and the Kohanaiki Development, a Sewage Pump Station (SPS) and
sewage force main to convey wastewater to the Kealakehe WWTP, conversion of an
existing Department of Water Supply (DWS) Tank for effluent reuse storage and
pressurization system, and upgrade of the KWWTP to an R-1 effluent conversion facility.
B. Projects aze to be funded by County Capital Improvement Project funds and State
Revolving Fund loan with expected future reimbursement via a Community Facilities
District (CFD) or Improvement District (ID).
2. Project Drivers:
A. Approximately 1.6 MGD of R-2 Effluent from the Kealakehe WWTP is currently disposed
of via a Seepage Pit located mauka of the Kealakehe WWTP.
B. The State of Hawaii, Department of Transportation, Highways Division (State DOT)
currently has the fast-track Queen Kaahamanu Widening Design-Build Project, Phase II in
the Request for Proposal (RFP) process with projected award of the RFP In August 2007.
• Dovetailing of portions of the North Kona Sewer and the North Kona Effluent Reuse
Upgrade projects with the State DOT project would result in significant cost savings
for the project.
o The project is a Design-Build project therefore design costs would be
established as part of the bid process.
o Construction Management of the project would be performed by the State DOT.
o Permits (NPDES Construction Permit, SMA Permits, Conservation District Use
Permit would be part of the State DOT project).
o Since the Sewer and Reuse Infrastructure installation would be a part of the
State DOT project, design of the roadway would already take into account
installation of the infrastructure.
o Contractor mobilization demobilization, traffic control, and Best Management
Practices (BMP's) would be for the entire project versus just for installation of
Sewer and Reuse Infrastructure.
• Installation of Sewer and Reuse Infrastructure after completion of the State DOT
project would result in tremendous negative impact to traffic flow in the area.
Comm. No. / G 9 • /
Ref. T~ ~se~l C
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North Kona Sewer & Reuse - Council.doc
3. Project Phases:
A. Due to the significant costs and work involved, a phased approach is recommended.
• Wastewater service to Hina Lani Street would become available in FY 10-11 or FY 11-
12 dependent on the length of the construction period.
o Total costs for the Sewer Infrastructure is estimated at $21 M.
• R-1 effluent reuse to the Kohanaiki azea would become available FY 11-12 or FY 12-
13 dependent on the length of the construction period.
o Total costs for the Effluent Reuse Upgrade is estimated at $21.1 M.
B. Phase Descriptions:
<T e . Cam orient Descn tronu 3 hm~ted
YP P P ~ ~ lost r
• Sewer Line from Kealakehe Pazkway to Sewage $3.6 M
Pump Station (SPS) site (Approx. 0.2 miles)
S-1 . Sewer Line from Hina Lani Street to SPS site
Phase 1 (Approx. 1.2 miles)
• Dual Force Main from SPS Site to Kealakehe
Pazkway (Approx. 0.25 miles)
ER-1 Reuse Line from Kealakehe Parkway to Kohanaiki $4.2 M
Development (Approx. 2.3 miles)
Sewage Pump Station and Dual Force Main from $17.4 M
S-2 Kealakehe Parkway to Kealakehe WWTP (Approx.
Phase 2 0.78 miles)
ER-2 Effluent Reuse Force Main from Kealakehe $2.5 M
Parkway to Kealakehe WWTP (A rox. 0.78 miles)
ER-3 Upgrade of Kealakehe WWTP Treatment Process to $13.2 M
rovide R-1 Water ca ability
Phase 3 Upgrade DWS Hina Lani Tank for Reuse Storage $1.2 M
ER-4 and to provide pressurization for Effluent Reuse
System.
Future ER-5 Reuse Line from Kohanaiki Development to $4.2 M
Keahole Ai ort
Page 2 of 2
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North Kona Sewer & Reuse - Council.doc
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