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SEWER FullASTER PLAN SUMMARY REPORT
FIREPAR-EEJ FO',"
DEPARTMENT OF ENVIRONMENTAL MANAGEMENT
COUNTY OF HAWAII
E R ri 1, 0 1
NORTH KONA IMPROVEMENT DISTRICT
PROJECT
KoNA, HAWAI`l
OCTOBER 2006
PROPOSING AGENCY:
Department of Environmental Management
County of Hawaii
PREPARED BY•
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I N T E R N A T 1 0 N A L
SSFM International, Inc.
501 Sumner Street, Suite 620
Honolulu, Hawaii 96817
North Kona Improvement District Project
North Kona Sewer Master Plan Summary Report Table of Contents
TABLE OF CONTENTS
CHAPTER PAGE
CHAPTER 1 INTRODUCTION
1
1.1
BACKGROUND
1
1.2
MASTER PLAN PROJECT AREA
2
1.3
SCOPE OF STUDY
2
CHAPTER 2 REGIONAL PROFILE
5
2.1
GENERAL CHARACTERISTICS
5
2.2
MAJOR STAKEHOLDERS
8
2.3
EXISTING LAND USE PLANS AND POLICIES
11
2.4
EXISTING WASTEWATER FACILITIES
16
CHAPTER 3 FUTURE LAND USE AND PROJECT WASTEWATER
18
3.1
FUTURE LAND USE ESTIMATES
18
3.2
FUTURE PROJECTED WASTEWATER FLOWS AND LOADS
21
CHAPTER 4 COLLECTION SEWER ALTERNATIVES
26
4.1
ALTERNATIVES DEVELOPMENT
26
4.2
PRESENTATION OF COLLECTION SYSTEM ALTERNATIVE
29
4.2.1 Preliminary Collection System Alternatives
29
4.2.2 Alternative 2A — Kamanu Gravity
35
4.2.3' Preferred Sewer Collection System
37
4.3
RECYCLED/REUSE WATER DISTRIBUTION
37
4.4
PUBLIC INVOLVEMENT PROGRAM
40
CHAPTER 5 KEALAKEHE WASTEWATER TREATMENT PLANT
44
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North Kona Improvement District Project
North Kona Sewer Master Plan Summary Report Table of Contents
LISTING OF FIGURES
FIGURE PAGE
Figure 1
Project Location and Study Ares Map
3
Figure 2
Existing Site Conditions
6
Figure 3
Existing Stakeholder Map
9
Figure 4
State Land Use District Map
12
Figure 5
County General Plan Land Use Pattern Allocation Guide Map
14
Figure 6
County of Hawaii Zoning Map
15
Figure 7
2025 Future Land Use Map
20
Figure 8
Geographic Wastewater System Collection Zones
27
Figure 9
Alternative 1
30
Figure 10
Alternative 2
32
Figure 11
Alternative 3
33
Figure 12
Alternative 2A
36
Figure 13
Reclaimed Water
39
LISTING OF TABLES
TABLES PAGE
Table 1 Listing of Major Stakeholders 10
Table 2 Summary of CPA Values 23
Table 3 Estimated Wastewater Flow Summary 25
Table 4 Comparison of Sewer Alternatives 31
LISTING OF APPENDICES
APPENDIX
Appendix A Council Resolution 129-03
Appendix B Major Stakeholder's Existing and Future Land Uses
Appendix C Preferred Sewer Collection System
Appendix D Public Informational Meeting Sign -In Sheet and General Comments
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North Kona Improvement District Project Chapter 1
North Kona Sewer Master Plan Summary Report Introduction
CHAPTER 1
INTRODUCTION
A North Kona Sewer Master Plan Summary Report was developed for the County of
Hawaii (County), Department of Environmental Management (DEM) to address future sewer
improvements necessary to serve projected development in the North Kona region of the island of
Hawaii. This sewer master plan summary report would then be used as part of the development
of an implementation plan to support the establishment of an "Improvement District" for North
Kona by the County Council. This project is thus collectively referred to as the North Kona
Improvement District (NKID) Project. This letter report summarizes the results of the efforts
undertaken in developing this sewer master plan which is the first phase of this project.
1.1 BACKGROUND
A rapid confluence of both private and public developments on several large tracts of land
extending from Kealakehe and Honokohau Harbor northbound to Kohanaiki is occurring or being
planned. This coastline north of Kona contains valuable unique marine resources and pristine
shoreline park properties that are of concern to the County. As a result, an updated regional
sewerage master plan for this North Kona region is warranted because existing sewer studies for
this region are over 20 years old and thus outdated not reflecting current development plans.
In light of this pending growth, the County anticipates the need to implement
improvements to their municipal sewer system and recycled water system serving this region.
Such improvements would include assessing their gravity sewers, force mains, manholes, and
pump stations situated north of the Kealakehe Wastewater Treatment Plant. Therefore, the mix
of private and public development planned necessitates the preparation of a more comprehensive
regional plan of wastewater treatment needs and sewer improvements for this region. In addition,
a number of options may be identified for selection in determining the allocation of sewer system
improvement costs.
Therefore, the Council of the County of Hawaii subsequently adopted Resolution No.
129-03 in December 2003 directing the County DEM to develop an implementation plan for an
improvement district. This implementation plan would include a sewer master plan for the region
north of Kealakehe. It would also address the necessity, feasibility, boundaries, estimated costs,
and desirable method of financing to provide sewer system improvements serving this North Kona
district. A copy of this Resolution is included in Appendix A.
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North Kona Improvement District Project Chapter 1
North Kona Sewer Master Plan Summary Report Introduction
1.2 MASTER PLAN PROJECT AREA
The project area established for this regional sewer master plan consists of a total area that
was initially considered for inclusion in an improvement district. This study area boundary
generally extends from the County's Kealakehe Wastewater Treatment Plant northbound up to
and inclusive of the Kohanaiki ahupua'a'. This sewer master plan study area encompasses
approximately 5,600 acres, and Figure 1 graphically shows the boundary for this area. It should
be noted that the resulting boundary for the improvement district may not reflect the total study
area included under this master plan.
As shown on this figure, the boundary along the shoreline starts from Kaiwi Point and
extends northbound about 3.75 miles past the Honokohau Small Boat Harbor and Kaloko Point
up to Puhili Point. The boundary from this coastline extends mauka (inland) about 3 to 4 miles up
to Palani Road and Mamalahoa Highway.
1.3 SCOPE OF STUDY
The overall scope of study for this NKID project consists of two primary phases. The first
phase is developing a sewer master plan to project future estimated flows and identify system
improvements needed. The study year established for this master plan is 2025. The second phase
will be developing an implementation study identifying proposed sewer improvements and a
desirable method of financing for the improvements. This implementation study will then be
transmitted by the County DEM to the County Council for consideration, processing, and action
in formally establishing the North Kona Improvement District as mandated in Resolution 129-03.
Phase 1 - Sewer Master Plan Preparation
The major tasks conducted in developing the sewer master plan include the following:
1. Researched and reviewed existing sewer plans, as -built drawings, land use
entitlements, and other references.
2. Inventoried existing land uses within the study area to establish "baseline"
conditions.
3. Identified and consulted with major landowners and developers to obtain
information on future development plans within the study area.
4. Established future land uses within the study area for the year 2025 along with
increment years (2015 and 2020), and projected flows on a per capita basis.
5. Identified necessary sewer system improvements, developed three (3) alternative
plans, and provided an opinion of probable construction costs.
1 Ahupua'a - Land division usually extending from the uplands to the sea.
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North Kona Improvement District Project Chapter 1
North Kona Sewer Master Plan Summary Report Introduction
• Sewer treatment alternatives were not included in this study scope. However,
an assessment of when the existing Kealakehe Wastewater Treatment Plant's
excess capacity would be totally utilized by future demand was performed.
6. Held a public informational meeting to solicit input on preliminary findings
associates with this master plan.
7. Developed the preferred alternative for sewer improvements, and refined cost
estimates.
8. Documented the results of this effort in a master plan summary report.
Phase 2 - Implementation Plan Preparation
Phase 2 of this NKID Project will consist of conducting a study to develop an
implementation plan that can be used in developing an Improvement District for review and action
by the County Council. The focus of this phase will be identifying the method of financing for
sewer improvements and determining how the distribution of costs will be established among the
landowners and developers. The results of that study will be documented in a future
Implementation Plan report. The major work tasks associated with that phase will consist of:
I . Assess and evaluate the program components necessary for the implementation plan.
2. Consult with major landowners and developers in the study area regarding program
components and requirements.
3. Conduct two public informational meetings to solicit input from the general public
on the implementation plan.
4. Evaluate comments received and revise the implementation plan.
5. Identify the preferred implementation plan and prepare an engineering report
documenting this.
The final Implementation Plan report would then be submitted by the County DEM to the
Council for review, processing, public hearings, and action in adopting a Council -initiated
improvement district by Resolution.
North Kona Improvement District Project Chapter 2
North Kona Sewer Master Plan Summary Report Regional Profile
CHAPTER 2
REGIONAL PROFILE
This chapter provides a profile overview of the region included in the sewer master plan
study area. It discusses the existing land use and settlement pattern of the region along with
existing infrastructure facilities pertinent to the County's municipal sewer system.
2.1 GENERAL CHARACTERISTICS
The study area in this North Kona district encompasses a large area from the shoreline
inland up to Mamalahoa Highway and totaling approximately 5,600 acres. This region is for the
most part still undeveloped. There are pockets of commercial and industrial developments
concentrated along Queen Ka'ahumanu Highway. Areas inland along Mamalahoa Highway
generally consist of a few older residential subdivisions. Figure 2 includes an aerial photograph
showing existing land uses as of 2004 (Digital Globe 2004).
Highways and Maior Roadways
Major roadway facilities within the study area, as shown on Figure 2, consist of two
primary State highway facilities generally running in a north -south direction and two County
roadways providing mauka-makai (east -west or inland -shoreline) connection between these
highways. A summary of these roadway facilities is provided below.
Queen Ka`ahumanu Highway. Queen Ka`ahumanu Highway (Highway 19), also
known as "Queen K", is under the jurisdiction of the State of Hawaii, Department
of Transportation. This highway generally runs in a north -to -south direction along
the coastline providing access to the shoreline and existing developments along this
highway. This highway within the study area has a 300-foot-wide right-of-way, and
is a non -divided, two-lane highway with paved shoulders.
2. Mamalahoa Hi.zhway/Palani Road. Palani Road and Mamalahoa Highway are two
separate highway facilities which are both identified as State Highway 190 under the
jurisdiction of the State of Hawaii, Department of Transportation.
• Mamalahoa Highway is identified as State Highway 180 through its route
northbound from Kailua-Kona town. This highway intersects with Palani Road
about 0.25 miles south of its intersection with Hina Lani Street. From this
point, it then continues northbound as Mamalahoa Highway (Highway 190)
thru the study area. This highway consists of a non -divided, two lane roadway
with shoulder.
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North Kona Improvement District Project Chapter 2
North Kona Sewer Master Plan Summary Report Regional Profile
• Palani Road begins from its intersection with Queen Ka'ahumanu Highway
near the entrance to Kailua-Kona town and proceeds northbound as a mauka
highway facility up to its intersection with Mamalahoa Highway. This facility
consists of a non -divided, two lane roadway with shoulder.
3. Hina Lani Street. Hina Lani Street is under the jurisdiction of the County of
Hawaii. This road generally runs in a mauka-to-makai direction providing the only
major link connecting Queen Ka'ahumanu Highway and Mamalahoa Highway. The
road is an existing non -divided, two-lane road with wide shoulders.
4. Kealakehe Parkway. Kealakehe Parkway is under the jurisdiction of the State of
Hawaii. This roadway generally runs in a makai-to-mauka direction from the
Honokohau Small Boat Harbor up to the Villages of Laiopua situated about midway
between the two highways. The road is an existing non -divided, two-lane road with
paved shoulders. Kealakehe Parkway is planned to be extended mauka (inland) in
the future eventually connecting with Mamalahoa Highway.
Ma *or Existing Land Uses within Study Area
Major land uses existing within the study area consists of both residential subdivisions and
commercial and industrial subdivisions as previously shown on Figure 2. A summary of these
major land uses is provided below:
1. Residential Subdivisions. These subdivisions generally consist of older
developments established along Mamalahoa Highway under the State Agricultural
Land Use District. The majority of the residential lots associated with these
subdivisions are already developed.
• Kohanaiki Homesteads
• Paniolo Country
• Kona Hills Estates
• Kona Heavens
• Kaloko Orchards
2. Commercial / Industrial Subdivisions. These subdivisions generally consist of mixed
uses of commercial and industrial uses concentrated along Queen Ka'ahumanu
Highway. Some major tenants in the area include Costco Wholesale and Home
Depot. A large number of the lots for these subdivisions are currently undeveloped.
• Kaloko Light Industrial Subdivision
• Kohanaiki Business Park Subdivision
• McClean Light Industrial Subdivision
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North Kona improvement District Project Chapter 2
North Kona Sewer Master Plan Summary Report Regional Profile
3. Other Uses and Facilities. Other major land uses and public facilities situated within
this study area are identified.
• Kaloko Honokohau National Historical Park. This national park is owned by
the Federal government, and encompasses a few large parcels of land totaling
about 615 acres. This park is situated north of the boat harbor, and includes
the property from the shoreline up to Queen Ka`ahumanu Highway. Existing
facilities include a visitor's center and restroom facilities.
• Honokohau Small Boat Harbor. This boat harbor is owned by the State of
Hawaii under the jurisdiction of the Division of Boating and Ocean Recreation
of the State Department of Land and Natural Resources. This boat harbor
serves as a recreational facility for the public and has 262 moorings, 3 launch
ramps, and other accessory facilities.
• Kealakehe Wastewater Treatment Plant. This treatment plant is owned and
operated by the County of Hawaii, and presently serves developments both
within and outside of the study area. The property is owned by the State of
Hawai` i.
2.2 MAJOR STAKEHOLDERS
Major stakeholders within the study area were identified because these entities have
significant amounts of property that are affected by the planned North Kona Improvement
District. Most of these properties are generally either undeveloped or partially developed, thus,
their future development plans were used in developing the sewer master plan.
Major stakeholders are defined under this study as landowners or developers having a
combined total of 10-acres or larger. Stakeholders also include both Federal and State
governments who own larges properties along the coastline. Figure 3 graphically identifies them
within the study area and a listing of these major stakeholders is provided in Table 1.
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North Kona Improvement District Project Chapter 2
North Kona Sewer Master Plan Summary Report Regional Profile
Table 1
Listing of Major Stakeholders
Major Stakeholders
TMK
Acres
373007027
5.5
HUALALAI VISTAS LLC
373007050
47.9
373009003
442.3
THE SHORES AT KOHANAIKI —
373009016
7.8
KOHANAIKI SHORES LLC
373009018
92.9
374024004
1.4
MC CLEAN HONOKOHAU
374024007
3.4
PROPERTIES
374024012
44.0
KALOKO HEIGHTS - STANFORD
373009019
193.9
CARR DEVELOPMENT
337300932
207.9
373009013
144.5
LEE, DEAN K /ETAL
373009014
11.7
373009017
224.4
373009025
360.1
TSA/MID CORP.
373009026
194.3
373009028
371.9
373051060
102.3
374008005
394.4
LANIHAU PROPERTTES/PALANI
374008013
314.4
RANCH CO.
374008057
51.6
374008060
89.9
327 KONA LLC
374008047
327.3
STATE OF HAWAI`I
374008003
442.3
(JACOBY DEVELOPMENT)
374008071
218.5
DEPARTMENT OF HAWAIIAN HOME
LANDS
374008072
200.0
JACOBY DEVELOPMENT
373009002
249.5
FEDERAL GOVERNMENT - KALOKO-
373009021
72.1
HONOKOHAU NATIONAL HISTORIC
PARK
374008010
234.7
374008025
59.2
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North Kona Improvement District Project Chapter 2
North Kona Sewer Master Plan Summary Report Regional Profile
2.3 EXISTING LAND USE PLANS AND POLICIES
Information from available land use plans was reviewed to identify existing settlement
patterns in the study area, and to assist with evaluating future development and settlement
patterns.
State Land Use District
Under Chapter 205, HRS, all lands in the State of Hawaii are classified into four major
land use districts (State Land Use Districts): the Urban District, the Rural District, the
Agricultural District, and the Conservation District. For each land use district classification, there
are defined uses or activities permitted which are described under §205-2, HRS. The boundaries
of these districts are shown on maps referred to as State Land Use District Boundary Maps.
Figure 4 shows the current land use districts for properties within the study area, and some
general comments are provided below:
1. Urban District. Activities or uses permitted within this District are established and
regulated by ordinances or regulations of the County of Hawaii.
• The majority of parcels along Queen Ka`ahumanu Highway and the coastline
are designated Urban District.
• Most of these parcels are undeveloped, but are available for development
under County zoning district.
• Several large parcels are owned by the Federal government as part of the Kaloko
Honokohau National Historical Park, and would thus essentially remain
undeveloped.
2. Conservation District. Activities or uses permitted within this District are regulated
by Section 13-5, Hawaii Administrative Rules (HAR) falling under the jurisdiction of
State Department of Land and Natural Resources.
• There are a few large parcels along Queen Ka`ahumanu Highway designated
Conservation District. Other areas are situated along the coastline.
• These parcels are undeveloped, and would require reclassification to another
land use district along with other entitlements to permit development.
3. Agricultural District. Activities or uses permitted within this District are regulated
by Title 15, Subtitle 3, Chapter 15, HAR falling under the jurisdiction of State Land
Use Commission. The County of Hawaii can further define accessory agricultural
uses and services by zoning ordinance.
• Most of the mauka parcels within this study area up to Mamalahoa Highway
are designated Agricultural District. With the exception of existing residential
subdivisions, these parcels are presently undeveloped.
• Development of these parcels is currently being planned by landowners which
will require land use reclassification and other entitlements for permitted uses.
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North Kona Improvement District Project Chapter 2
North Kona Sewer Master Plan Summary Report Regional Profile
County of Hawaii General Plan
The amended County of Hawai `i General Plan was recently completed and adopted via
Ordinance 05-25 in February, 2005. The General Plan is a long-range, comprehensive, general
plan prepared to guide the overall future development of the County.
The General Plan Land Use Pattern Allocation Guide (LUPAG) Map is the plan that
reflects long-range planning through land use designations. These designations are based upon
the anticipated direction that each region is headed and are not necessarily consistent with existing
county zoning. It is because of this long-range planning document that future land uses can be
reasonably forecasted despite having different zone allocations.
Figure 5 shows this LUPAG land use designations within the sewer master plan study
area. This map shows that all parcels not already designated for a specific land use has been
designated as "Urban Expansion". As a result, the full development, or build out, of the study
area has been planned for under the updated General Plan. Specific land uses for these urban
expansion areas would need to be determined as part of the normal entitlement process.
County of Hawaii Zoning District
The County's zoning district maps identifies the current zoning districts for properties
within the study area. Permitted uses and activities are set forth through provisions from Chapter
25, Zoning Code, Hawaii County Code. Figure 6 shows the present zoning districts established
for properties in the study area. Some general comments are provided below.
➢ Most of the properties makai (seaward) of Queen Ka'ahumanu Highway is zoned
Open restricting more urban type developments.
• The parcel owned by the State Department of Hawaiian Home Lands is not
subject to County zoning district regulations, and is planned for development.
• The Kohanaiki parcel planned for development under their approved Special
Management Area Use Permit will not match the zoning districts identified.
➢ Many parcels situated mauka (inland) of Queen Ka'ahumanu Highway is zoned for
industrial or mixed uses.
➢ The majority of property situated inland up to Mamalahoa Highway is still zoned for
agricultural uses. Change of zoning will be required for these properties to allow for
more intensive urban uses and activities.
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North Kona Improvement District Project Chapter 2
North Kona Sewer Master Plan Summary Report Regional Profile
2.4 EXISTING WASTEWATER FACILITIES
Research was conducted to identify existing wastewater facilities in the study area. Such
systems consist of private wastewater systems and the County's public sewer system which
includes the wastewater treatment plant.
Private Wastewater Systems
There are numerous individual wastewater systems (IWS) for the many developments
(residential and commercial) present within the study area. These IWS consist primarily of septic
tanks and leach fields, which are serving developments on privately -owned properties. The design
and construction of these IWS are regulated by the Hawaii Administrative Rules 11-62 which are
enforced by the Department of Health — Wastewater Branch. For the purposes of this Sewer
Master plan, the location/amount of these existing IWS were not factors considered.
County Sewer Collection Systems
Most of the study area does not have an existing public sewer collection system. During
the utility research process, it was discovered that "dry sewers" were installed in the Honokohau
Business Park subdivision and the Kaloko Light Industrial Subdivision. These "dry sewers" were
basically sewer mains installed per the County design standards with the intent of connecting them
to a future sewer collection system. These "dry sewers" are capped and marked at each end of
the sewer pipes.
There are existing sewer mains, which range from 10-inch diameter to 30-inch diameter,
located to the south of the study area. These existing sewer mains are concentrated within the
Villages of Laiopua, and gravity flow to the Kealakehe Wastewater Treatment Plant.
County Wastewater Treatment Facility
At the southwestern corner of the study area and to the south of Honokohau Harbor is the
existing Kealakehe Wastewater Treatment Plant (KWWTP). The following are excerpts of the
"Keahole to Kailua Development Plan", prepared by the County of Hawaii Planning Department
in April 1991. The following excerpt describes the basis of the KWWTP construction and preface
for the design of future improvements.
"The Kealakehe Sewage Treatment Plant serves both the northern zone and
the southern zone of Kailua-Kona. The Keahole to Kailua Development Plan
area was included in the tributary area of the northern zone with the exception of
the extreme north end of the study area, an area of approximately 2,400 acres.
This area will be tributary to sewage treatment plant No. 2 and does not affect the
capacity of the Kealakehe Sewage Treatment Plant. The Kalaoa subarea is also
tributary to STP No. 2. The upper Keopu subarea is not expected to be sewer in
the first 20 years.
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North Kona Improvement District Project Chapter 2
North Kona Sewer Master Plan Summary Report Regional Profile
Flow projections for the Kealakehe STP for both the northern and southern
zones are given in Table 4.7 (source: Kailua-Kona Facility Plan Southern Zone,
June 1981). Required capacity of the plant as submitted to EPA is 2.80 mgd
average flow for the 20 year design period and 5.82 mgd for the 40 year design
period. The treatment plan is designed for a capacity 2.80 mgd average flow for
the 20 year design and 7.82 mgd average flow for the 40 year design. The
Keahole-Kailua Development Plan when fully implemented by the year 2010 (20
years) will contribute 4.92 mgd average flow. The projected flow from the
southern zone in the year 2010 is 1.29 mgd. The total required capacity of STP
No. I is 6.21 mgd average flow which is within the 7.82 mgd planned capacity of
the plant. "
Previous Sewer Studies
Previous sewer studies completed for this area were reviewed. This section provides a
brief description of these previous study which were used in developing the master plan.
In July of 1990, R.M. Towill Corporation completed the Amendment to the Revised
Environmental Impact Statement for the Kailua-Kona Sewerage System Phase IV (Northern
Zone) for the County Department of Public Works. The purpose of this amendment was to
address the impacts of effluent disposal by land irrigation compared with disposal by ocean
outfall. Due to the environmental significance of Class AA offshore waters and the anticipated
increase of reclaimed water demand, the ocean outfall concept for disposal was abandoned.
In August of 1994, Belt Collins Hawaii completed the Villages of La iopua Planned
Community, Sewer System Master Plan for the Housing Finance and Development Corporation,
State of Hawaii. The purpose of this master plan was to update the plan completed in 1981 by
R.M. Towill Corporation for sizing of the County of Hawai`i's Kealakehe Wastewater Treatment
Plant. This report, in accordance with the Keahole to Kailua Development (K to K) Plan,
incorporated flows from adjacent private parcels.
In February of 1999, Brown and Caldwell completed the Kealakehe Wastewater
Treatment Plant Effluent Reuse Master Plan for the County Department of Public Works. The
purpose of this report was to expand upon the earlier ideas for reuse. The master plan's
objectives were to: estimate reuse demand, demand timing, and water quality requirements of
potential users; evaluate the existing WWTP effluent quality to determine acceptability for reuse;
develop design criteria for filtration and ultraviolet disinfection treatment facilities to meet
Department of Health R-1 reclaimed water standards; develop design data for transmission system
and storage facilities to serve potential users; and develop recommended phasing of treatment,
transmission system and storage facilities.
North Kona Improvement District Project Chapter 3
North Kona Sewer Master Plan Summary Report Future Land Use And Projected Wastewater
CHAPTER 3
FUTURE LAND USE AND PROJECTED WASTEWATER
This chapter discusses the future land use assumptions for the year 2025 that were used in
developing projected wastewater flows and loads.
3.1 FUTURE LAND USE ESTIMATES
Future land uses within the study area were estimated based upon: 1) research of existing
available references, entitlements, and studies, and 2) consultation with major stakeholders
identified. The availability of wastewater data was limited due to the vast amount of undeveloped
lands in the study area. Therefore, extensive research of available files and documents to identify
future land uses and development plans was conducted through various State and County
agencies along with private resources. Based upon the available information obtained, estimates
were developed for future land uses for properties within the study area along with timeframes for
their completion.
Major Stakeholder Consultation Efforts
Consultation efforts with stakeholders were a significant element in determining the future
wastewater needs associated with the undeveloped parcels in the study area. The initial phase of
consultation efforts identified major stakeholders to be included in the consultation process. Only
the major land owners with parcels over 10 acres have been solicited for land use information.
Consultation efforts included the following:
➢ An information package was created and mailed out to consult stakeholders
regarding their future development plans and wastewater needs.
• Survey packages were sent to the major stakeholders on December 19, 2005.
Packages included a cover letter with a description of the improvement district,
survey form, location map, and copy of County of Hawaii Resolution 129 03.
• Only one (1) completed survey was returned by the requested deadline. Six (6)
more surveys were received after the initial deadline.
➢ Phone calls were made to major stakeholders who did not return completed surveys
to remind them and ask for their cooperation.
➢ A follow up survey package was sent to all major stakeholders not yet responding.
• These were sent out on February 15, 2006 to six (6) major stakeholders.
• Since then three (3) additional survey responses have been received.
• No responses have yet been received from three (3) stakeholders.
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North Kona Improvement District Project Chapter 3
North Kona Sewer Master Plan Summary Report Future Land Use And Projected Wastewater
Future Land Uses
Based upon the information received and researched, future land uses were estimated. It
should be noted that several of the stakeholders did not have any information or future
development plans . available. Other stakeholders had general development plans for their
properties, but were still early in their processes.
Timeframes for future development phasing were estimated using information provided by
major stakeholders or available land use references. Consequently, several of the developments
would occur over several phases and many still needed to obtain discretionary entitlements for
their properties before proceeding. Appendix B includes a table listing the major stakeholders
correlating future and existing land use information gathered. Figure 7 graphically shows the
estimated land use patterns for this study area.
Descriptions of Future Land Use Designations
The following descriptions correlate to the land use designations shown on Figure 7. Each
designation has been generalized to include either specific land uses or groupings encumbering
numerous uses. Each description below also includes future likely County of Hawaii zoning
district designations associated with the land use designations. Therefore, the land uses
represented on Figure 7 are not official zoning district map designations, but are intended to only
serve as a guide to establish land use information used to predict future wastewater projections.
Low Density Residential: These areas have been identified for future single family residences
involving the subdivision of land or similar land development.
Anticipated County Zoning includes RS, FA or A.
High Density Residential:
Includes areas designated for higher residential densities. Anticipated
County Zoning include RM.
Commercial:
Reserved for commercial uses, anticipated County Zoning includes
CN, CG, and CV.
Industrial:
Intended for industrial uses, anticipated County Zoning includes ML
and MG.
Park/Open Space:
These areas will be reserved for uses such as park and open space,
areas. These sites will remain undeveloped and will not generate
wastewater. Anticipated County Zoning includes O.
Utilities/Public Facility:
These areas include the Kealakehe Wastewater Treatment Plant and
other public facilities or utilities. Also included in this designation
are future public parking areas in the Honokohau Harbor expansion
areas. Anticipated County Zoning includes possible O, A, R, C and
M designations.
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Commercial/Industrial Intended for future areas incorporating mixes of commercial and
Mixed. industrial uses. Anticipated County Zoning includes MCX.
Undeveloped: These lands are anticipated to remain undeveloped thru our study
year and beyond. Anticipated County Zoning includes O.
Residential/Commercial These areas intended for mixed residential and commercial uses.
Mixed. Anticipated County Zoning includes RCX.
Hualalai Academy: Private School as depicted on Figure 7.
Honokohau Small Boat The existing Honokohau Small Boat Harbor as shown on Figure 7.
Harbor:
Marina Expansion: Future expansion of the small boat harbor.
3.2 FUTURE PROJECTED WASTEWATER FLOWS AND LOADS
This section discusses how the future wastewater flows generated from the proposed
study area were estimated. County of Hawaii DEM currently references the City and County of
Honolulu (C&C) Wastewater Design Standards (1993) (henceforth referred to as C&C
Standards). Therefore, the projected wastewater flows were based upon the C&C Standards.
These standards recommend that the new sewer systems should be designed for the ultimate
tributary equivalent population, except for systems that can be readily increased in capacity.
Wastewater Flow Generation Methodolo v
The amount of wastewater generated from each parcel depends on many factors including;
usage of sewer connections (i.e., domestic, industrial, etc), entitled/proposed developments,
existing domestic water consumption, groundwater conditions, and lifestyle. Each parcel within
the study area was researched and categorized into one of the following land uses and its
associated capita per acre (cpa) values. These CPA values were obtained from the C&C
Wastewater Design Standards, and are based on the average per capita flow of wastewater of 80
gallons per day (gpd).
Standard CPA Values
Residential (4 persons/home, 2.8 persons per apartment unit)
Central business (300 cpa)
Community Business (140 cpa)
Neighborhood Business (40 cpa)
Resort (400 cpa)
Apartment (high density 390 cpa, medium density 250 cpa and low density 85 cpa)
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North Kona Improvement District Project Chapter 3
North Kona Sewer Master Plan Summary Report Future Land Use And Projected Wastewater
General Industry (100 cpa)
Waterfront Industry (40 cpa)
School (25 gpcd)
Institution (200 gpcd)
Industrial CPA Values
The assignment of CPA values for parcels with the County zonings of MCX (Industrial -
Commercial), ML (Limited Industrial) and MG (General Industrial) were more challenging. As
listed above, there were no obvious categories for these industrial zoned parcels. Therefore, as
stated in the C&C Wastewater Design Standards, the average daily flows from these industrial
parcels were analyzed and based on land use or best available data, whichever is higher.
To determine appropriate CPA values for the MCX, ML, and MG zoned parcels,
domestic water consumption records were acquired from the County Department of Water
Supply for the existing industrial -zoned parcels within the study area. From there, the current
CPA values were estimated by dividing the average monthly water consumption (gpd) by usable
acreage of each parcel and then divided by the average daily water use of 80 gallons per day per
capita. This analysis estimated the following CPA values for the MCX, ML, and MG zoned
parcels.
MCX zoning — 100 cpa (similar to General Industry)
ML zoning — 40 cpa (similar to Waterfront Industry)
MG zoning — 100 cpa (similar to General Industry)
Other CPA Values
As previously mentioned, there were several TMK parcels, identified as 3-7-009:013, 014,
017, and 018 which were zoned "OPEN" but did not have any existing or planned entitlements
within the 20-year study period. Questionnaires and interviews with the current landowners did
not produce any useful development plans. However, these parcels could theoretically sustain
various types of developments in the future.
As a result, some flow volumes were needed in developing a Total Build -Out scenario for
this sewer master plan. Therefore, some assumptions were needed on the wastewater projections
from these four parcels for the "Total Build -Out" year in order to account for possible
development near the tail end of the 20-year study period and to aid in the sizing of the lift station
and force main currently under design by Kohanaiki/Rutter Development.
Thus, it was assumed that these four parcels could be developed in a similar manner to the
proposed development of Kaloko Heights owned by Stanford Carr Development, LLC. The
Kaloko Heights development will have mixed commercial and/or industrial uses. Thus,
extrapolated land use information obtained for the Kaloko Heights development was used to
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North Kona Sewer Master Plan Summary Report Future Land Use And Projected Wastewater
calculate an approximate CPA value of 20. Therefore, the 20 CPA assumption was used for these
four undeveloped parcels for the wastewater projections.
Summary of CPA Values
Therefore, the following capita per acre values were used for the wastewater flow
generation calculations (unless capita per acre values from more detailed plans were obtained
from landowners).
Table 2
Summary of ('PA \/nbiaQ
County of Hawaii Zoning
County of Hawaii Zoning Definition
Applied capita per acre (cpa)
IRS
Single -Family residential
4 person/home or parcel
RM
Multiple -Family residential
4 person/home or parcel
RCX
Residential -commercial mixed use
4 person/home or parcel
RA
Residential and agricultural
4 person/home or parcel
FA
Family agricultural
4 person/home or parcel
A
Agricultural
4 person/home or parcel
V
Resort -hotel
400
CN
Neighborhood commercial
40
CG
General commercial
100
CV
Village commercial
40
MCX
Industrial -commercial mixed use
100
ML
Limited industrial
40
MG
General industrial
100
O
Open
20-400
Future Wastewater Flows
The following future wastewater flows were projected: 1) design average flow; 2) design
maximum flow; and 3) design peak flow.
Design Average Flow
The Design Average Flow is the flow expected on an average day if it were evenly spread
over a 24-hour period. This flow includes the Average Wastewater Flow and the applicable dry
weather infiltration and inflow. It is assumed that the entire study area collection system will be
above the normal groundwater table. Therefore, the applicable dry weather infiltration/inflow
(I/I) rate for sewers above the normal ground water table should be 5 gallons per capita per day
(gpcd).
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North Kona Sewer Master Plan Summary Report Future Land Use And Projected Wastewater
The Average Wastewater Flow was calculated based upon the C&C Wastewater Design
Standards. The majority of the area is undeveloped and it is anticipated that future developments
will require considerable road infrastructure improvements. Therefore the CPA values were
applied to an adjusted acreage. The adjusted acreage provided a 20 percent allowance for
uninhabited/unoccupied uses such as roads, easements, etc.
Design Maximum Flow
The Design Maximum Flow is the highest flow anticipated at any time during an average
day. Daily peaks occur because the timing of wastewater generation depends on the timing and
type of water uses that take place. Domestic users tend to have high morning peak with a lower
evening peak corresponding to bathing, food preparation, dishwashing, and clothes washing
trends. Industrial users, on the other hand, tend to use water on a more consistent basis with
much more subdued daily peaks.
The Design Maximum Flow is the sum of the maximum wastewater flow and the
applicable dry weather infiltration and inflow. Per the City & County of Honolulu Wastewater
Standards, the maximum wastewater flow is obtained by multiplying the average flow by a flow
factor. Figure 22.2.4 from the C&C Wastewater Standards was used to obtain the flow factors,
which is referred to as the Babbit Curve. The Babbit Curve essentially provides a peaking factor
based upon the average rate of dry weather flow (i.e., the smaller the flow, the higher the peaking
factor). The peaking factor used was 5.0.
Infiltration/Inflow
The dry and wet weather infiltration/inflow rates were calculated for the study area and
included in the Design Peak Flow. Infiltration/Inflow is the surface (inflow) and ground water
(infiltration) which leaks into a sewer through joints, manhole covers, or breaks. This calculation
assumed that the entire study area was sewered with the new sewer mains above the normal
ground water table. It was also assumed that there would be minimal wet weather
infiltration/inflow from the National Parks properties since there will be very limited future
development on these parcels.
The applicable dry weather infiltration/inflow (I/I) rate for sewers above the normal
ground water table is 5 gallons per capita per day (gpcd) and the wet weather infiltration/inflow
rate for sewers laid below the normal ground water table is 35 gpcd. The wet weather
infiltration/inflow rate for sewers laid above the normal ground water table is 1250 gallons per
acre per day (gad) and the Infiltration/Inflow rate for sewers laid below the normal ground water
table is 2750 gad.
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Design Peak Flow
The Design Peak Flow, also known as the peak wet weather flow, is the highest flow
anticipated any time during a major rainfall event. Wet weather peaks occur in any collection
system, although proper design, construction, and maintenance can help minimize the peaks.
Per the City & County of Honolulu Wastewater Standards, the Design Peak Flow is the
sum of the Design Maximum flow and the Wet Weather Infiltration/Inflow rates.
Future Wastewater Flow Summary
The following Table 3 summarizes the estimated future Design Average Flow, Design
Maximum Flow, and Design Peak Flow for the study area for the years 2015, 2020, 2025, and
Total Build -Out. These future flows are based on the current land uses, current entitlements,
future entitlements for each parcel, assumptions previously mentioned, and the various developer
and government planning policies for the region. The following flow projections would be subject
to change based on these factors and many other macroeconomic factors.
Table 3
Estimated Wastewater Flow Summary
Build -Out
Year
Average Daily;
Flow (mgd)
Maximum Daily''
Flow (mgd)
Design Maximum
Flow (mgd)
Peak Wet
Weather Flow
(mgd)
2015
9.02
25.41
25.97
42.04
2020
10.57
31.41
32.07
48.13
2025
12.05
36.57
37.32
53.38
Total Build -Out
13.85
44.01
44.88
60.95
'Current flows represents a hypothetical scenario if the entire study area was to be sewered and connected to the
Kealakehe W WTP in the year 2005.
Appendix C includes a figure showing the estimated average daily flows and peak wet
weather flows for the entire study area which are based upon the Build -Out Year phasing
estimates. These flows were also calculated for the Total Build -Out Year in addition to the other
mcrement years.
On this figure, there are certain parcels which show no (0) wastewater flows. The reason
these parcels show no wastewater flows is because these parcels did not indicate any future
development within the corresponding study timeframe.
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North Kona Sewer Master Plan Summary Report Collection Sewer Alternatives
CHAPTER 4
COLLECTION SEWER ALTERNATIVES
This chapter discusses establishment of the preferred sewer master plan and previous
sewer alternatives based upon the projected wastewater flows and loads.
4.1 ALTERNATIVES DEVELOPMENT
In order to facilitate the analysis of the collection system alternatives, the study area was
geographically divided into four reasonable zones which are graphically shown on Figure 8.
The first zone, Zone 1, generally encompasses the parcels situated between the ocean and
Kamanu Street. Zone 1 also includes the TMK parcels 7-4-008: 003, 7-4-008: 071, 7-4-008: 072
(DHHL/DLNR), 7-4-008: 058 (Kealakehe WWTP), etc.
The second zone, Zone 2, generally includes the parcels between Kamanu Street and the
future Ane Keohokalole Highway (also known as the Middle Road). The third zone, Zone 3, is
generally comprised of the parcels between the future Ane Keohokalole Highway and the future
Kealakaa Street. The fourth zone, Zone 4, consists of the parcels between the future Kealakaa
Street and the existing Mamalahoa Highway (upper highway). Appendix D includes a summary
of future sewer loads for estimated each zone within the project area.
Criteria for Selection of Preferred Collection Sewer Svstem
The type of collection system that is most appropriate for the study area depends on many
different factors ranging from geographic characteristics of the study area, economic
considerations, and community views. The following criteria are the most important factors
considered when evaluating the collection system alternatives:
1. Existing topography. Generally, the study area slopes down from east (mauka) to
west (makai). The preferred sewer alternatives will be gravity sewer lines.
2. Alternate Sewer Collection Technologies. Research was completed on other sewer
collection technologies such as low-pressure collection systems. The low-pressure
system would require additional grinder pumps on each private parcel which would
grind and pump wastewater to a County -owned low-pressure collection line. This
alternate technology was not foreseen as a favorable option for the existing
community because of additional private costs and maintenance. In addition, the
general topography of the study area favors a gravity sewer from the mauka to the
makai regions and then typical sewer lift stations on the makai portion to force the
wastewater to KWWTP.
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3. Expected growth patterns of the study area. See Appendix B for detailed
information on the expected build -out patterns for the study area. The preferred
sewer alternatives will attempt to collect wastewater from the all the parcels within
the study area.
4. Future roads. Per the County of Hawaii, Planning Department, there are several
future roads or road extensions planned in the study area. Thus, preferred sewer
routes are within the proposed future roads and County -owned rights -of -way. See
the Alternative alignment figures for the locations of the future roads. Since these
are future planned roads and are subject to change, the proposed sewer routes are
tentative and also subject to change. The unforeseen discoveries of subsurface lava
tubes or archaeological sites could also significantly impact the alignments of these
future roads and the future sewer alignments.
5. Land acquisition. The County may need to acquire private land or obtain new utility
easements in order to collect the wastewater. The preferred sewer alignments will
minimize the need for land acquisition or new utility easements.
6. Sewer infrastructure by others (i e Kohanaiki Development, etc.l. The preferred
sewer alternative will aim to take advantage of the sewer infrastructure being
proposed by other developers. Rutter/Kohanaiki Development, which is proposing
to construct at their cost, a private lift station on its property, a gravity sewer and
sewer force main along Queen Kaahumanu Highway, another County -owned lift
station near the Honokohau Boat Harbor entrance, and another sewer force main to
connect to KWWTP. Rutter/Kohanaiki Development is also planning to construct a
recycled water transmission line from the KWWTP back to the Kohanaiki
development for the irrigation of the resort's golf courses (Kohanaiki/Rutter Off -Site
sewer infrastructure plans dated January 6, 2006).
7. Initial construction costs. Initial construction cost is a major factor in identifying the
preferred sewer alignment. The initial construction costs are to be determined.
8. Future costs of operating and maintenance (O&Ml. The approximate future costs
for operations and maintenance are also included in the evaluation process for the
preferred alignment. The County DEM's goal is to limit the amount of future O&M
costs because these costs will be affected by future O&M budgets and manpower
allocations. The future operating and maintenance costs are to be determined.
9. Other items. It is assumed that the Kealakehe Wastewater Treatment Plant can
accept and treat all of the projected wastewater generated from the study area. It is
assumed that the projected wastewater will not have to be conveyed to another
future wastewater treatment plant.
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4.2 PRESENTATION OF COLLECTION SYSTEM ALTERNATIVES
The following sections present the preferred method of sewer collection and each
proposed sewer alternatives developed for this study area. Table 4 compares each of these
alternatives based upon the factors discussed.
4.2.1 Preliminary Collection System Alternatives
Three (3) preliminary sewer collection systems were initially developed and presented to
the public through a public informational meeting held in the Kona area on June 6, 2006. Several
assumptions had to be made in the development of the collection system alternatives. These
assumptions are listed below.
1. Proposed sewer lines from the smaller parcels on the mauka (inland) side of the
study area were removed from the master plan. These smaller parcels are
residentially zoned and many already have existing individual cesspools or septic
tanks.
2. A sewer line along the future Kealaka`a Street, north of Hina Lani, was removed
because this portion of sewer line would not collect any wastewater flow from the
study area.
3. A sewer line at the mauka end of the Kealakehe Parkway Extension was removed
because this portion of sewer line would not collect any wastewater flow from the
study area.
Alternative 1— Kamanu Lift
Alternative 1 is shown on Figure 9 and uses Kamanu, Ane Keohokalole Highway, and
Kealaka`a Streets as collection sewer mains which would gravity flow in a southerly direction. At
the south end of the study area the collection mains from Ane Keohokalole Highway and
Kealaka`a would connect into the existing sewer main along Kealakehe Parkway. The collection
sewer main along Kamanu Street would gravity flow to the south and at the south end of the
study area the wastewater would be pumped mauka into the existing sewer system in Kealakehe
Parkway.
The wastewater from the areas between the ocean and Kamanu Street would primarily be
carried by gravity flow into the sewer system along Queen Kaahumanu Highway. This is the
system being developed by the Kohanaiki/Rutter Development. The gravity sewer in Queen
Kaahumanu Highway would continue to approximately the Queen K and Honokohau Boat
Harbor intersection. From there the wastewater would be pumped to the KWWTP.
This alternative also includes a gravity main along the Honokohau Boat Harbor Road. At
the makai end of that road a pump station will be needed to force the wastewater collected from
the surrounding parcels into the KWWTP.
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North Kona Sewer Master Plan Summary Report Collection Sewer Alternatives
Alternative 2 — Kamanu Gravity
Alternative 2 is shown on Figure 10 and is similar to Alternative 1. However, the main
difference is at the south end of Kamanu Street where the sewer main would gravity flow across
TMK parcel 7-4-020: 007 which is currently owned by the State of Hawaii. Therefore, a new
utility easement across this parcel would need to be obtained. Initial discussions with the State of
Hawaii, Department of Land and Natural Resources and the County of Hawaii indicated that a
new easement would be possible given the benefit to the public is substantial.
Alternative 3 — National Parks
Alternative 3 is shown on Figure 11 and is similar to Alternative 1. The main difference is
from the Hina Lani Street and Queen Kaahumanu Highway intersection where the sewer
alignment would run through the National Parks property in a southern direction to the KWWTP.
This alignment is similar to that proposed in the Keahole to Kailua Development Plan
(1991). A new utility easement across the National Parks property would need to be obtained.
No initial discussions have been initiated with the National Parks for a new easement. In addition,
at the south end of Kamanu Street, the sewer would flow makai and into the gravity main along
Queen Kaahumanu. The wastewater would then be pumped to the KWWTP.
Table 4
Comparison of Sewer Alternatives
Alternative 1—
Alternative 2 —
Alternative 3 —
Kamanu 'Lift
Kamanu
National Parks
Gravity
Approximate Length (lineal feet)
120,280
123,690
129,980
of New Gravity Sewers
Approximate Length (lineal feet)
11,210
10,560
10,560
of New Sewer Force mains
Number of Proposed County-
3 (sizes TBD)
2 (sizes TBD)
2 (sizes TBD)
Owned Lift Stations
Approximate area (acres) of New
None
1.16 (assume
2.83 (assume 15'
Utility Easements
15' wide
wide easement)
easement
Approximate area (acres) Land
TBD
TBD
TBD
Acquisition for pump stations
Approximate Initial Construction
$46,300,000
$47,200,000
$49,400,000
Cost
Approximate Future Operations
TBD
TBD
TBD
and Maintenance Costs (over 20-
ear lifec cle
Does Alternative Service all of the
Yes
Yes
Yes
NKID study area?
Is there a strong community
No
No
No
opposition to this alternative?
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North Kona Improvement District Project Chapter 4
North Kona Sewer Master Plan Summary Report Collection Sewer Alternatives
Analysis of Collection System Alternatives
A summary of the pros and cons of each preliminary sewer collection system alternative is
provided below.
Alternative 1 — Kamanu Lift:
• Pros
o Primarily uses gravity flow sewers
o Sewer mains are aligned along existing or proposed County road rights -of -way.
o No new utility easements anticipated.
o Less future Operations/Maintenance Costs
• Cons
o Approximately three new County -owned and operated lift stations, which will
likely require some land acquisition
o Additional future Operations/Maintenance Costs
Alternative 2 — Kamanu Gravity:
• Pros
o Primarily uses gravity flow sewers
o Sewer mains are generally aligned along existing or proposed road rights -of -way.
o Less number of County -owned and operated lift stations (2)
o Less future Operations/Maintenance Costs
• Cons
o Additional future Operations/Maintenance Costs
o New utility easements anticipated
o Some land acquisition will likely be required for the lift stations.
Alternative 3 — National Parks
• Pros
o Primarily uses gravity flow sewers
o Sewer mains are generally aligned along existing or proposed road rights -of -way.
o Less number of County -owned and operated lift stations (2)
• Cons
o Additional future Operations/Maintenance Costs
o Some land acquisition will likely be required for the lift stations.
o New utility easements across U.S.A. Government lands Anticipated
Alternative 1 was not preferred because that option had the most proposed County -owned
lift stations. Alternative 3 was not preferred because of the proposed easement crossing the U.S.
Government lands. Alternative 2 was the original recommended alternative; however this
alternative has since been refined into Alternative 2A.
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North Kona Improvement District Project Chapter 4
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4.2.2 Alternative 2A — Kamanu Gravity
The comments received by the stakeholders and the public were used to develop
Alternative 2 into a refined collection system alternative, which is referred to as Alternative 2A —
Kamanu Gravity. A summary of comments received at this public informational meeting is
included in Section 4.4 of this report. Alternative 2A has been proposed because it maximizes the
use of gravity sewers, has the least amount of County -owned lift stations, and requires an
easement through State-owned lands (instead of an easement from the Federal Government). The
estimated construction costs for this alternative is $91.6 million.
Alternative 2A was further developed based on additional information received from the
public meeting identifying the location of an existing lava tube along the Kamanu Street extension.
Akinaka and Associates is the consultant for the County Department of Public Works' Kamanu
Street Extension Project providing information. Due to the sensitivity associated with the lava
tube, no deep utilities will be permitted along the Kamanu Street extension. Therefore, the
proposed sewer mains in this vicinity were re-routed accordingly. Alternative 2A is shown on
Figure 12 and is similar to Alternative 2 except for the following major difference:
1. There is a break in the proposed sewer line on the Kamanu Street extension
through the proposed West Hawaii Business Park to the north of the Honokohau
Business Park.
This proposed break in the sewer line was necessary because of the existence of an
archaeological site (State Site No. 18117) along the Kamanu Street Extension. The developers of
the Kamanu Extension exhausted various road alignments to avoid the archaeological site.
However, the County Department of Public Works did not approve any alignment because of
non-compliance with National and County design safety standards. In 2006, the State
Department of Land and Natural Resources, Historic Preservation Division approved the surface
crossing of the eastern portion of this site as proposed by the WHBP developers2. The proposed
crossing includes a roadbed with a reinforced concrete section and to minimize the width of travel
lanes in the area of the archaeological site. Alternative 2A also includes the following
assumptions:
1. Development of a sewer line along Kealakehe Parkway which parallels the existing
sewer lines in that road. This parallel sewer would connect into the sewer line
coming from the south end of Kamanu Street.
2 DLNR letter dated January 20, 2006
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2. Development of a sewer line from the south end of Kamanu Street across the
lower DHHL property. This sewer he would follow the approximate boundary
between Residential and Commercial uses as detailed in the 2005 Laiopua Water
Master Plan. This sewer line would then turn 90-degrees to the west and cross
Queen K highway and continue to the KWWTP.
3. The reroute of wastewater from Honokohau Business Park and parcel directly to
the south to the Queen Kaahumanu Highway sewer trunk line.
4.2.3 Preferred Sewer Collection System
This Preferred Sewer Collection System is similar to Alternative 2A but is more defined
and is now recommended as the Preferred Collection System Alternative. The details of this
sewer collection system are shown on a figure located in Appendix C of this report.
The Preferred Sewer Collection System Alternative was developed based on the
information received about the existing lava tube and development information received from the
Villages of Laiopua project consultant. The Villages of Laiopua is not within the NKID study
area, however the proposed NKID sewer mains that are routed through the Villages of Laiopua
and are aligned based on future land development layouts shown in the Villages of Laiopua Water
Master Plan (2005). The Preferred Sewer Collection System Alternative also considers the latest
proposed road alignments received from the Jacoby development and the proposed West Hawaii
Business Park subdivision.
4.3 RECYCLED/REUSE WATER DISTRIBUTION
The usage of Recycled/Reuse water is meant to decrease the demand on the domestic
water resources and provide an alternate source of irrigation water for many developers. It also
provides an alternate wastewater effluent disposal. Within the study area, the demand for
recycled water was primarily expressed by several large landowners for irrigation purposes. The
following landowners expressed a desire to benefit from recycled water from the KWWTP.
• TMK 7-3-009:003 (Kohanaiki Shores)
• TMK 7-3-009:025 (MID Corporation)
• TMK 7-4-008:071 (Kona Kai)
• TMK 7-4-008:072 (Kona Kai)
KWWTP currently has the ability to treat wastewater to the R2 level. Currently the
Swing Zone is receiving R-2 water from the plant. However, because there is limited demand for
the recycled water, the plant has been treating the wastewater to the R3 level and disposing the
effluent in a seepage pit.
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The total future demand for R1 recycled water has yet to be determined. However, the
Kohanaiki Development has agreed to receive 1.30 mgd of R-1 water. More demand information
from the prospective R1 users is necessary to further the sizing of the R1 recycled main.
One reclaimed water reservoir is included in this Report. This reservoir will be located on
1.22 acres of vacant land along Hina Lani Street within TMK 7-3-009:025. This site is currently
undeveloped and formerly belonging to the County Department of Water Supply (DWS). This
site was turned over to the County from the DWS for use as a reclaimed water reservoir. There is
no existing reservoir on this parcel.
This reclaimed water reservoir will function to provide flow equalization, water storage,
and pressurization for the re -use system. The reservoir site is located at approximately 350-feet
above sea level. It is assumed that the reservoir's spillway elevation will be approximately 368-
feet above sea level. Therefore, due to the location and elevation of the proposed reservoir, it is
assumed that adequate pressure can be supplied to parcels at the 268-feet elevation or lower. For
parcels at elevations at 268-feet and higher, the recycled water will need to be boosted to serve
these parcels. Thus, a booster pump and backup generator for this pump will be necessary at the
reservoir site.
Figure 13 indicates a possible alignment for the Recycled/Reuse water from the KWWTP.
The route of the Recycled/Reuse water line by the County is subject to change as more R1
demand information is acquired.
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North Kona Improvement District Project Chapter 4
North Kona Sewer Master Plan Summary Report Collection Sewer Alternatives
4.4 Public Involvement Program
As previously mentioned, an initial public informational meeting was held by the County
DEM to notify the public of the project, solicit input on community needs, concerns, and other
information that could be used in developing project concepts and alternatives. This informational
meeting was held on the night of June 6, 2006 at the Kelalakehe High School Cafeteria. Public
notification of this meeting was published in the May 171h issue of the Hawaii Tribune Herald.
Flyers providing notice of this meeting was also distributed to major stakeholders within the
project area.
Prior to the date of the meeting, a draft of this Sewer Master Plan Report was made
available to the public for view at the Kailua-Kona Public Library as well as on the County of
Hawai'i website (www.co.hawaii.hi.us) under the Department of Environmental Management,
Technical Services Section. A copy of the meeting sign -in sheet is located in Appendix E of this
document along with a summary of comments received at this meeting. General comments
received at this informational meeting could be grouped into a few categories which are
summarized below along with discussions as to how they are being addressed.
Comments Received at Public Meeting
1. Comments on participating in the Sewer Improvement District included:
• Residential properties greater than 10,000 square feet would not require sewer
connection and that many of the sewer connections shown on the graphics within the
existing subdivisions were not required to connect.
• Asked what if septic is already done for a certain property.
The project study area boundary is not to be confused with the Improvement District
Boundary, which is to be determined at in Phase 2 of the NKID Project. However it was
mentioned that depending on which alternate, some property owners may be forced to
participate, even if they have existing septic systems currently in place.
2. Comments about planned land uses included the following:
• Stated that in 1992, the State's Housing Finance Development Corporation (HFDC)
paid $5.35 million to finance the expansion and upgrade of the KWWTP, thereby
entitling HFDC to 1.6 MGD of reserve sewage treatment capacity. When State
Department of Hawaiian Home Lands (DHHL) purchased this land from HFDC in
2004 it was assumed that the 1.6 MGD capacity at the plant and sewer collection
system was also purchased.
DHHL will continue to have rights to KWWTP encumbrances as per their agreement
resulting from their purchase of previously owned HFDC lands. u
• Described a portion of land which will remain under the jurisdiction of Department of
Land and Natural Resources (DLNR) and suggested further refinement of the
boundaries between the KWWTP, DHHL, and DLNR parcels.
-40-
North Kona Improvement District Project Chapter 4
North Kona Sewer Master Plan Summary Report Collection Sewer Alternatives
• Provided with a copy of the Jacoby Development project update of Kona Kai Ola
mixed -use development.
• Comments that the land uses need to be readjusted and the maps need to be updated
with projects already planned.
The future land uses identified in the Kona Kai Ola (Jacoby Development) development
plans have been incorporated into the future land use map presented as Figure 7 in this
report. This figure has also incorporated available land use information regarding
projects with current or anticipated development plans.
3. Comments about the sewer improvements and planned facilities included the following:
• Concerns made about the 30-inch sewer line and its adequacy to handle wastewater
connections.
• Suggested for alternative 2 that the sewer line along Kealakehe Parkway be extended
to connect with the lift station on Queen Kaahumahu Highway.
• Questioned the necessity for the Hina Lani Street sewer line between Ane Keohokalole
Street and Kealakaa Street. Also suggested removing this line due to the intent of
property owners in this zone to connect directly to Ane Keohokalole Street.
• Concerns about the Rutter sewer line and whether or not the State would allow Rutter
to use the public Right-of-way for a private sewer line.
• Question regarding the location of the lift station on Queen Kaahumanu Highway near
Kealakehe Parkway.
Comments regarding the preliminary sewer collection system alternatives have been
incorporated into the development of Alternative 2A which has been further refined into
the Preferred Sewer Collection System alternative. This preferred system incorporates
received public comments and presents the recommended alternative which best
accommodates the needs of this project.
4. Comments concerning the Kealakehe Waste Water Treatment Plant included the
following:
• Questioned if Kealakehe Waste Treatment Plant could handle the additional flows
created by new development.
• Asked if the WWTP maximum capacity limit had the authority to set limits for land
uses.
• Recommended that a study be conducted to analyze the WWTP and incorporated into
the Master Plan and Implementation Plan.
Additional analysis of KWWTP should identify in what year the treatment plant will
reach 75% of its current design capacity. Further analysis of the KWWTP capacity and
its expandability is recommended. It was noted that there is ample room at the KWWTP
for updating technology and expansion The current disposal method for KWWTP is by
seepage pit, which is temporary in nature.. Thus, this report further recommends that
these KWWTP issues be addressed as soon as possible.
-41-
North Kona Improvement District Project Chapter 4
North Kona Sewer Master Plan Summary Report Collection Sewer Alternatives
5. Comments on significant archaeological sites and resources included the following:
• Commented that a lava tube which is a sensitive archaeological site is located within
Lanihau Properties mauka of Queen Kaahumanu Highway.
• Indicated that because of the archeology site along Kamanu Street there would
probably be a break in the sewer line and the sewer would flow down a new East-West
road towards Queen K. also indicated was that there was a "high point" in the Kamanu
Street extension near Lanihau's south border.
These issues have been addressed in the discussion of Alternative 2A and are also
incorporated into the preferred sewer collection alternative located in Appendix C.
• Commented there were other significant archeology and dry land forest sites.
• Commented that alternative 3 would be difficult to implement due to the National Park
crossing, there are too many sensitive resources that would require costly mitigation in
the millions of dollars.
Additional archaeological sites and sensitive forest lands will be mitigated and addressed
when found. In the event of any such discovery, the appropriate authorities would be
contacted.
6. Comments on problems that could occur included the following:
• Asked what would happen if Rutter/ Kohanaiki sewer line failed to be constructed.
It was explained that the line would likely be built,, and if not by Rutter, then this line and
costs would need to be included into the Improvement District.
• Asked if Rutter's line would be constructed to handle additional flows or just their
own. Concerned about the "under usage" of a sewer line and lift station and what
would happen if the sewer line was in place but not receiving an adequate amount of
flows.
Rutter/Kohanaiki is working with the County to determine the size and anticipated flows
of the new sewer line which will be located along Queen Kaahumanu Highway and
privately developed. Due to the issues associated with inadequate flows and usage, these
coordination efforts continue to occur between Rutter/Kohanaiki and the County.
7. Comments about the cost of the sewer improvements included the following:
• Asked who would pay for the reclaimed water system.
• Suggested a formula needs to be established on payment allocation.
The County pointed out that the summary report costs estimates were "ballpark"
estimates but still missing a considerable amount of hidden costs. Cost allocation will be
established in Phase 2 of this project and will be determined once the sewer
improvements and Improvement District boundary has been established.
8. Comments about the Master Plan Included:
• Suggested keeping the future zoning colors consistent on the alternative figures.
• Questioned 2025 Future Land Use Map (Figure 7) being outdated and on zoning
descriptions.
-42-
North Kona Improvement District Project Chapter 4
North Kona Sewer Master Plan Summary Report Collection Sewer Alternatives
Per the comment received, future zoning colors were adjusted to be consistent throughout
the report. The 2025 Future Land Use Map (Figure 7) is a conceptual map showing
future land uses based upon information gathered from the State Land Use Commission
for land use districts, County zoning and land use patterns, and from survey responses
received from major stakeholders regarding future land use plans.
Concerns made about the huge amount of "residential/commercial mixed" land use in
the 2025 Future Land Use Map.
Due to the potential for residential and commercial mixed development and lack of
available future land use information, the "residential/commercial mixed" land use
designation was used to depict areas most likely to be developed as residential
subdivisions. As mentioned earlier, this is a conceptual land use map and is subject to
changes as new information becomes available.
• Asked when draft of Phase 2 the Implementation Plan will be done.
A draft of the Implementation Plan (Phase 2) should be completed by the end of 2006.
-43-
North Kona Improvement District Project Chapter 5
North Kona Sewer Master Plan Summary Report Kealakehe Wastewater Treatment Plant
CHAPTER 5
KEALAKEHE WASTEWATER TREATMENT PLANT
Per the "Keahole-Kailua Development Plan (1991)," the Kealakehe Wastewater
Treatment Plant is designed for a capacity 2.80 mgd average flow for the 20-year design and 7.82
mgd average flow for the 40-year design. However, based on further discussions with the County
DEM, the "as -built" average design flow for the KWWTP is 5.31 mgd.
Per the Wastewater Projections, by the year 2015, the Design Average Flow from the
study area will exceed the current capacity of the KWWTP. It should also be noted that if the
study area were to be hypothetically sewered, in the current (2005) year the Design Peak Flow
(7.91 mgd) would exceed the existing design capacity of the treatment plant. For the purposes of
creating this report, it is assumed that the KWWTP will have adequate capacity to treat all the
future wastewater from the NKID study area.
Based on the above, it appears that further analysis of the KWWTP capacity and its
expandability is critical and urgent. The additional analysis should identify in what year the
KWWTP will reach 75% of its current design capacity. In addition, the analysis should address
the disposal mechanism of the KWWTP.
North Kona Improvement District Project Chapter 5
North Kona Sewer Master Plan Summary Report Kealakehe Wastewater Treatment Plant
Additional development projects outside the NKID study area will develop additional
tributary areas that will create effluent to be treated at the Kealakehe Wastewater Treatment
Plant. These areas are currently under study with a sewer master plan expected in mid-2007.
It is understood that the current disposal method for the treatment plant is a seepage pit,
which is understood to be temporary in nature. However, any increase of wastewater effluent to
this seepage pit will possibly come under scrutiny from the public and other governmental
agencies. Thus, it is highly recommended that these KWWTP issues be addressed as soon as
possible by the County.
Encumbered Flows
In 1992, the State of Hawaii, Department of Housing Finance and Development
Corporation (HFDC) and the County of Hawaii entered into a participation agreement for the
expansion of the County's Kealakehe Wastewater Treatment Plant to meet the future sewage
treatment needs of the HFDC planned project, the Villages of La`iopua. The Villages of
La`iopua, while outside of the study area, is important because sewage effluent from this area will
be conveyed to and treated at the Kealakehe Wastewater Treatment Plant.
The following quotes are taken from the agreement between the Department of Public
Works, Wastewater Division, County of Hawaii and the Housing Finance and Development
Corporation (HFDC) dated March 19, 1992:
1. "HFDC estimates its planned project (Villages of La`iopua Master Planned Community
Project) will require on an average about 1.6 mgd of sewage to be treated on a daily basis
after the planned project is fully completed over a period of 15 - 20 years;"
2. "HFDC's financial participation in the County's expansion and upgrade of the Kealakehe
Treatment Plant will entitle the HFDC to reserve up to 1.6 mgd of sewage treatment capacity
for its planned project."
The HFDC transferred its rights to the 1.6 mgd of treatment and disposal for the Villages
of La`iopua to the Department of Hawaiian Home Lands (DHHL) via a Transfer Agreement
dated December, 30, 2004 and a First Amendment of Transfer Agreement dated May 2, 2006.
It is expected that portion of the Villages of La`iopua will be developed before the NKID
area will have sewer collection infrastructure built. Sewer collection infrastructure in the Villages
of La`iopua has been master planned with excess capacity constructed. This excess capacity will
be able to serve the Villages well into the study period.
Capacity of Kealakehe Wastewater Treatment Plant 5.31 mgd
Existing flows to Kealakehe Wastewater Treatment Plant 1.50 mgd (approximate)
Encumbered flows to KWTP 1.60 mid
Remaining unencumbered capacity 2.21 mgd (approximate)
-45-
APPENDixA
COUNCIL RESOLUTION 129-03
COUNTY OF HAWAII STATE OF HAWAPI
RESOLUTION NO. 129 03
Draft 2
A RESOLUTION RELATING TO THE PREPARATION OF (1) A NORTH KONA REGIONAL
SEWERAGE MASTER PLAN; AND (2) A COUNCIL INITIATED IMPROVEMENT DISTRICT
IMPLEMENTATION STUDY FOR THE CONSTRUCTION OF CERTAIN WASTEWATER
AND RECYCLED WATER SYSTEM IMPROVEMENTS FOR KEALAKEHE, HONOKOHAU,
KALOKO AND KOHANAIKI, DISTRICT OF NORTH KONA, HAWAI`I
WHEREAS, the Council of the County of Hawaii wishes to initiate proposed improvements
on certain real property located at Kealakehe, Honokohau, Kaloko and Kohanaiki, District of North
Kona, County and State of Hawaii for improvements consisting of extension to the municipal sewer
system and recycled water system, pursuant to the provisions of Section 12-10, Hawaii County
Code, as amended; and
WHEREAS, the Council of the County of Hawaii acknowledges that the Kona Coast north
of Kailua contains valuable, unique marine resources and pristine shoreline park properties including
Honokohau Harbor, Kaloko Honokahau National Historic Park, a new Kohanaiki shoreline park, and
the Natural Energy Laboratory of Hawaii Authority at Keahole Point; and
WHEREAS, the Council finds that the rapid confluence of private and public developments
within the North Kona region extending from Kealakehe and Kaloko to Honokokau Harbor and north
to the Lands of Kau calls for an updated regional sewerage master plan for this area; and
WHEREAS, the operative "sewer policies" referenced in Ordinance 89-142, An Ordinance
Adopting the County of Hawaii General Plan and Repealing Ordinance No. 439, As Amended ("the
General Plan") for the general planning of sewerage disposal systems are decades old, to wit: the
"Sewerage Study for All Urban and Urbanizing Areas of the County of Hawaii, State of Hawai`i,"
December 1970, the "Water Quality Management Plan for the County of Hawai`i," December 1980,
and the "Facility Plan for the Kailua-Kona Sewerage System, Phase TV (Northern Zone)," April,
1981; and
WHEREAS, in its assessment of the projected sewage flow capacity of the Kealakehe
Sewage Treatment Plant, the "Keahole to Kailua Development Plan" adopted by the County Council
in Resolution 296-91 on April 3, 1991 called for "further planning and design"; and
WHEREAS, the General Plan states that industrial development in North Kona's
"redeveloping or newly developing areas shall be developed in concert with programmed public and
privately funded infrastructure to meet the expected needs"; and
WHEREAS, expanded visitor use of the Kaloko Honokahau National Historic Park
administered by the National Park Service, coupled with shoreline park development of Kohanaiki
and its planned, low density intentional community, merit thoughtful wastewater treatment and
sewerage planning to assure environmental protection of these pristine shoreline areas; and
WHEREAS, the "Sewer Policies" outlined in the General Plan states, in part:
• "Private systems shall be installed by land developers for major resort and other
developments along shorelines and sensitive higher inland areas, except where
connection to nearby treatment facilities is feasible and compatible with the County's
long-range plans, and in conformance with state and county requirements.
• The County shall take immediate steps to designate treatment plant sites, sewerage pump
station sites, and sewer easements according to the facility plans to facilitate their
acquisition.
The County shall seek State and Federal funds to assist in financing the construction of
proposed sewer systems"; and
WHEREAS, the Council of the County of Hawai `i acknowledges the need to implement
improvements consisting of extension to the municipal sewer system and recycled water system on
certain real property located at Kealakehe, Honokohau, Kaloko and Kohanaiki, District of North
Kona, County and State of Hawaii; and
WHEREAS, extension of said improvements from the existing Kealakehe Wastewater
Treatment Plant north along the alignment of the Queen Kaahumanu Highway to Kohanaiki will
include, but not be limited to, necessary recycled water mains, gravity sewers, manholes, pump
station(s) and force mains, and sewer laterals with cleanouts to be installed to each property serviced
by the proposed improvements; and
WHEREAS, the Council acknowledges that there are a number of public and private
developments planned or completed in this region including, but not limited to, Lanihau Properties,
McClean Honokohau Properties, Gentry Properties, Taylor Family Ltd. Partnership, Mid
Corporation, Rutter/KW Kohanaiki LLC, TSA Corporation, Y-O Properties, and various public
landowners including the State of Hawaii, the State ofHawai`i Department of Hawaiian Homelands,
the United States of America (General Services Administration and National Park Service), as well
as a newly proposed West Hawaii campus of the University of Hawaii; and
WHEREAS, the Council acknowledges that the mix of private and public development of
properties within the region requires the preparation of a more comprehensive regional plan of
wastewater treatment needs and sewer improvements than that contemplated in Resolution No. 70-01
(deferred), which proposed a Council -initiated improvement district from the Kealakehe Wastewater
Treatment Plant to the Kaloko Industrial Area; and
WHEREAS, the Council finds that a number of options may be chosen for the allocation of
costs of sewer system improvements, including, but not limited to: distribution of sewer
improvement district costs by parcel, allocation by zoning or permissible number of units assigned to
each parcel, potential usage, required sewer capacity, square footage of buildings, benefits conferred
upon the land, or a combination thereof; and
WHEREAS, the allocation of costs associated with said improvements and the preferred
financing thereof may best be determined after the scope and timetable(s) of intended development,
including incremental development, of all affected landowners are surveyed, and all landowners are
consulted within a regional planning process.
NOW, THEREFORE, BE IT RESOLVED BY THE COUNCIL OF THE COUNTY OF
HAWAI`I that:
(1) in consultation with the landowners referenced above, the Director of the Environmental
Management is directed to prepare for submission to the Council (a) a broad regional
sewerage master plan for the region north of Kealakehe, and (b) a specific and detailed
implementation plan for an improvement district to include the necessity, feasibility,
proposed boundaries, proposed real properties subject to assessment, estimated total cost,
and method of financing desirable for the aforementioned sewer system improvements at
Kealakehe, Honokohau, Kaloko and Kohanaiki, District of North Kona, County and State
of Hawaii; and
(2) include in the specific and detailed implementation plan all such data, survey, maps,
plans, drawings, details and specifications for the improvements and any other matters or
details intended to apply thereto in accordance with the provisions of Section 12-10,
Hawaii County Code, as amended; and
(3) advise the Council as to the preferred method of financing said improvements, whether
by Council -initiated improvement district, owner -initiated improvement district, tax
increment district, community facilities district, or private financing.
BE IT FURTHER RESOLVED that the Clerk of the County of Hawaii transmit copies of
this resolution to the directors of the Departments of Finance and Environmental Management, and
the Environmental Management Commission.
Dated at Hilo, Hawaii, this _ 17t_ day of
County of Hawaii
Hilo, Hawaii
I hereby certify that the foregoing RESOLUTION was by
The vote indicated to the right hereof adopted by the COUNCIL of the
County of Ha"'ai'i on Dec anber17_, 2003
ATTEST
COUNTY CLERK
AN & PRESIDING OFFICER
December , 2003.
Member, County of Hawaii
ROLL CALL VOTE
AYES
NOES
ABS
EX
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X
CHUNG
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HOLSCHUH
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JACOBSON
X
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X
SAFARIK
X
TULANG
X
TYLER
9
0
0
0
Reference: C - 417 4
RESOLUTION NO. 129 03 (Draft 2)
APPENDixB
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APPENDixD
PUBLIC INFORMATIONAL MEETING
SIGN -IN SHEET
GENERAL COMMENTS SUMMARY
NORTH KONA I.N,11'RON7E,!NIEN'I'I)ISI'IZIC"I'PROJtCl'
Depai-micift of Environmental Management
County of liawaif
PIJBLIC INFORMATIONAL METTING NO. I
SIGN -IN SHLIT"T
Kealakche High School Cafeteria, 6:00 p.ni,
June 6. 2006
1. Name
Phone:
el-�, 2:-T�
Orilarlization or
Address
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Finail
2. Name
Phone:
Or-anization or
Email
Address
3. Name
Phone:
Organization or
Email
Address
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4. Name
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Organization or
—Phone:
Email
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Address
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NORTH KONA I1IPIIOVE.Nlt?,N'I'DIS7'111C'F PROJECT'
Department of Environmental Management
County of Hawaii
PUBLIC INFORMATIONAL MFFTING NO. I
SIGN -IN SHEET
Kealakche High School Cafeteria. 6:00 p.m.
JUnc 6, 2006
8. Narne
Phone:
-7
Org,anization or
Address
D A
Email
LevV-r-'I
Name
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Phone:
Organizafiorl or
Address
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12, Name
Phone:
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13. Name
Phone:
OT11,anization or
Address
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[:mail
14. Name
Phone:
Organizittion or
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Email
Address
NORTH KONA IMPROVEMENT DISTRICT PROJECT
Department of Environmental NNIanagernent
County of Illawaii
IIUBI JC INFORMATIONAL MEI-'-'-f'[N(; NO. I
SfGN-IN SHEET
Kcalakchc I 11,gh School Cafeteria, 6:00 pmi.
June 6. 2006
15. Name
4
Phone:
Organization or
Address
5,
16. Name
Phone:
Organization or
Address
Em ail
17. Name
Phone:
organization or
Address
IS. Name
---- — - -------------- ------ - ------ -- ---------- - ------------
Phone:
'7Y�--2-2 -7
Organization or
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Phone:
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C7
NORTH KONA IMPROVEINIENI'Dis,rRicr PROJECT
Department of Environmental Managernent
County of 14awaii
PUBLIC INFORMAI IONALMEETING NO. I
SIGN -IN SHFFT
Kcalakche ffit-,h School Cal'eteria, 6:00 p.m.
June 6. 2006
'12, Name
i I
Phone:
Organization or
[,,.mail
Address
73
Organization or
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En-lail
Address
24. Name
Phone:
Organization or
Email
ev
Address
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2
25Name
Phone:
Organization or
Address
Email
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26. Name
Phone:
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Ors,anization or
Email
Address
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27- Name
Phone:
org-aniz'a--tio-nor
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Address
28. Name
Phone:
Organization or
Email
Address
. ...........
I N T E R N A T 1 O N A L
June 7, 2006
NKID
1" Public Informational Meeting Notes
Opening: Dora Beck
Introduction: Steve Yee
PowerPoint Presentation: Steve Yee
Comments by the audience during the presentation:
SSFM INTERNATIONAL, INC.
501 Sumner Street, Suite 620
Honolulu, Hawaii 96817
Phone: (808) 531-1308
Fax: (808) 521-7348
Project Managers, Planners, & Engineers
American Council of Engineering Companies, Member
SSFM 2004 115.000
1. Tom Smith (327 Kona) asked if Kealakehe WTP could handle the additional flows
created by new development and why hasn't this project analyzed the plant as well.
2. Jim Greenwell (Lanihau) asked who would pay for the reclaimed water system. Then
commented that only three users will benefit from the reclaimed water use, yet everyone
within the ID will pay for it. It was also clarified that the Rutter/Kohanaiki line will be
constructed at partial developer expense and the county will likely pay a share for the
excess capacity in the collection system
3. Sheldon Yamasato (Akinaka & Assoc) described a lava tube with a sensitive
archaeological site located within Lanihau Properties' TMK parcel 3-7-4-008: 030,
mauka of Queen Kaahumanu Highway. The approximate location of this site was
recorded.
Comments received during General Discussion:
1. Tom Smith commented that many of the one -acre lots (Kohanaiki Homestead & Kona
Heavens Subdivision) located in the north-east portion of the ID boundary will option -out
of participating in the ID.
2. Tom Smith also indicated that residential properties greater than 10,000 sf would not
require sewer connection and that many of the sewer connections shown on the graphics
within the existing subdivisions were not required.
3. Tom Smith had concerns dealing with the zoning showed in the 2025 Future Land Use
Map and indicated our information appeared incorrect and out of date. He asked how
low -density residential zoning was defined in this map. And high -density? It was
explained that low -density residential would consist of single-family residential units,
and high -density would include multi -family residential units.
4. Larry Sumida (DHHL) expressed concern about the Queen Kaahumanu Highway 30-inch
sewer line's adequacy to handle all of the wastewater connections. SY advised that these
alignments are conceptual and that design and pipe sizing has not been incorporated.
5. Larry Sumida stated that in 1992, the State's HFDC paid $5.35 million to finance the
expansion and upgrade of the KWTP entitling the HFDC to reserve 1.6 MGD of sewage
treatment capacity. When DHHL purchased this land from HCFCD in 2004 it was
assumed that the 1.6 MGD capacity at the plant and sewer collection system was also
purchased.
6. Paul Kay (Stanford Carr) suggested for alternative 2 that the sewer line along Kealakehe
Parkway be extended to connect with the lift station on Queen Kaahumahu Highway. It
was explained that the size and capacity of the lift station would need to be increased if
SSFM INTERNATIONAL, INC.
ONFU
501 Sumner Street, Suite 620
Honolulu, Hawaii 96817
Phone: (808) 531-1308
N T E R N A T 1 O N A L Fax: (808) 521-7348
Project Managers, Planners, & Engineers
American Council of Engineering Companies, Member
June 7, 2006 SSFM 2004 115.000
that connection were to take place, but that his suggested alignment was indeed being
considered.
7. Paul Kay questioned the necessity for the Hina Lani Street sewer line between Ane
Keohokalole Street and Kealakaa Street. Mr. Kay suggested removing this line due to the
intent of property owners in this zone to connect directly to Ane Keohokalole Street. It
was explained that this section of line would be necessary to further separate and define
the flows from zones 3 and 4.
8. Paul Kay asked what would happen if Rutter/ Kohanaiki sewer line failed to be
constructed? It was explained that the line would likely be built, and if not by Rutter,
then this line and costs would need to be included into the ID.
9. Richard Boston (National Park Service) commented that alternative 3 would be difficult
to implement due to the National Park crossing, there are too many sensitive resources
that would require costly mitigation in the millions of dollars.
10. Jim Greenwell expressed concern about the huge amount of "residential/commercial
mixed" land use in the 2025 Future Land Use Map. It was explained that this land use
assumption was allocated to these areas due to a number of reasons: 1) lack of future land
use information; 2) lack of required entitlements for these parcels to build anything; and
3) could not assume "zero" any parcel.
11. Tom Smith made a comment to adjust and refine the "residential/commercial mixed"
areas on the 2025 Future Land Use Map.
12. Burke Matsuyama had concerns about the Rutter sewer line and whether or not the State
would allow Rutter to use the public ROW for a private sewer line. DB and BJLT
indicated that their latest understanding is that they have SDOT's buy off since the sewer
line could benefit the State.
13. Sallie Beavers asked if Rutter's line would be constructed to handle additional flows or
just their own. It was explained that the line was not for Kohanaiki's exclusive use and
would be able to handle additional flows based upon the anticipated flows from Zone 1
and deliver to Kealakehe WWTP.
14. Burke Matsuyama was concerned about the "under usage" of a sewer line and lift station.
He asked what would happen if the sewer line was in place but not receiving an adequate
amount of flows. It was acknowledged that problems occur with low flows in large
capacity collection systems and this will be evaluated by future designers before sizing is
determined.
15. Sheldon Yamasato asked if the WWTP maximum capacity limit had the authority to set
limits for land uses. It was noted that there is ample room at the KWTP for updating
technology and expansion.
16. Tom Smith recommended that a study be conducted to analyze the WWTP and
incorporated into the MP and IP.
17. Mark Van Pernis pointed out that the MP costs estimates were "ballpark" estimates but
still missing a considerable amount of hidden costs.
18. Jim Greenwell asked when he can expect to see a draft of Phase 2 the IP. It was
explained to him that each stakeholder will be kept up to date on the status of this project,
that there will be more public meetings and to expect the completion of the IP sometime
in early 2007. Greenwell expressed the sense of urgency on timing and cost for the ID
process.
®' SSFM INTERNATIONAL, INC.
64L ` 501 Sumner Street, Suite 620
Honolulu, Hawaii 96817
1 N T E R N A T 1 O N A L Phone: (808) 5
Fax: (808) 521-1-73348
8
_—'�----�� Project Managers, Planners, & Engineers
American Council of Engineering Companies, Member
June 7, 2006 SSFM 2004 115.000
19. Tom Smith suggested keeping the future zoning colors consistent on the alternative
figures.
Comments were collected during the "Break-out" discussion session:
1. David Tarnas (Jacoby) described a portion of land which will remain under the
jurisdiction of DLNR. He further refined the boundaries between the WWTP, DHHL,
and DLNR parcels and provided us with a copy of the Jacoby Development project
update of Kona Kai Ola.
2. Mr. Tarnas explained that the EISPN for the Jacoby project will be published in the June
23, 2006 issue of the OEQC Environmental Notice. We will be able to contact Scott
Abrigo (PBR) for a copy of their EISPN.
3. Mr. Tarnas had a question regarding the location of the lift station on Queen Kaahumanu
Highway near Kealakehe Parkway. His concern was whether the lift station would be
mauka or makai of the Queen K Highway, he was directed to speak with the County on
this matter.
4. Paul Kay reiterated his concern over the Zone 1 alignment saying he has indications that
Rutter's intentions may not be the same as everyone's expectations.
5. Toro Smith and Paul Kay spoke at some length describing their plans to develop much of
their properties in a manner that would preclude the need for sewer connection for large
portions of their project; that Kealakaa road alignment has been changed in consultation
with the COH Planning Dept and affected landowners and is near finalization; that he is
striking deals with COH Planning Director, Chris Yuen to grant zoning considerations in
exchange for construction of the road; and that if we want gravity lines in the area we
should speak with them right now. Tom Smith opined out that lots 1 Ok square feet and
larger (mauka section of his project) are not required to have sewer connection to county
systems but noted his development will have some 6000-7500 square feet lots (makai
section) that will.
Comments were collected during the "Civil Break-out" discussion session:
l . Sheldon Yamasato indicated that because of the archeology site along Kamanu Street
there would probably be a break in the sewer line and the sewer would flow down a new
East-West road towards Queen K. (See marked up Alternative Maps). Mr. Yamasato alsc
indicated that there was a "high point" in the Kamanu Street extension near Lanihau's
south border. (See marked up Alternative Map).
2. Jim Greenwell approximated other significant archeology and dry land forest sites on the
Alternative map.
Comments collected during the "County Break-out" discussion session:
1. Bobby Jean Leithead-Todd informed Burke Matsuyama that a formula needs to be
established on payment allocation. It all depends on feedback from landowners on
usage. Possible formula of square footage and potential density.
2. Burke Matsuyama asked what if septic is already done and Bobby Jean Leithead-
Todd replied that most likely that property will not be included.
sup
I N T E 7!!
I O N A L
SSFM INTERNATIONAL, INC.
501 Sumner Street, Suite 620
Honolulu, Hawaii 96817
Phone: (808)531-1308
Fax: (808)521-7348
Project Managers, Planners, & Engineers
American Council of Engineering Companies, Member
June 7, 2006 SSFM 2004_115.000
3. Bobby Jean Leithead-Todd indicated that depending on which alternate, some can be
forced to participate.
4. Bobby Jean Leithead-Todd noted that Stanford Carr does not want to wait and
Kohanaiki does not want Sewage Treatment next to their homes yet they both need
the water.
5. Bobby Jean Leithead-Todd commented that County is not moving ahead with
planned county golf course. The State land in the lower portion of Laiopua is E&O'd
specifically for golf course and effluent reuse from the State and if not used for the
specific purpose, it can be taken back by the State. Dora Beck asks if it can be
included in the Improvement District and Bobby Jean Leithead-Todd says County
will need permission from the State.
6. Sheldon Yamasato says land use needs to be readjusted and the maps need to be
updated with projects already planned i.e. the tributary.
7. Gary Takehashi asked how the Kamanu Street extension will come into play in the
plans.