‘ĪAO VALLEY STATE MONUMENTPARK IMPROVEMENTS

Public Informational Meeting
Wailuku Community Center
Thursday, March 14, 20195:00 pm to 7:00 pm

AGENDA•WELCOME•MEETING FORMAT•PROJECT OVERVIEW•PROPOSED IMPROVEMENTS•–Site Plan–

Operational Requirements–Potential Impacts

SLOPE REPAIRS–Design Considerations–Long-Term Slope Stabilization•BREAK OUT SESSION•

CLOSING REMARKSPROJECT OVERVIEW• The Department of Land andNatural Resources (DLNR) isplanning to improve existing
facilities at the ‘Īao Valley StateMonument.
• $3 million of appropriated funds.
• Anticipated to go out for bid by
end of 2019 with construction
planned to commence in 2020.
• Prime Consultant:

PROPOSED IMPROVEMENTS
Provideadditional
parking

Install sewerlines fromcomfort station
to holdingtanks

Install nonpotable waterlines tocomfortstationRenovate
existing
comfortstation

Relocate
ADA stalls(Restroom and Parking Lot)

EnhanceparkentranceSITE PLAN

SITE PLAN
Renovatedcomfort station

Enhancedpark entrance
Relocated
ADA stalls

Two (2) new
holding tanks

Newwater line

Additional
ParkingOPERATIONAL REQUIREMENTS• Holding tanks would need to be pumped every three days during peak visitor
times.
– At $500/load and 3 loads/pump, annual pumping costs would be approximately$189,000.

• Other treatment and disposal options are being considered.
– Technologies to treat sewage effluent to higher level of treatment, such as aMembrane Bioreactor (MBR) wastewater treatment system that produces highquality effluent suitable enough for water reuse.
– Alternative options may have different power and space requirements forappropriate treatment and disposal.

• No effluent would be discharged into the ground or stream with any of thealternatives.

POTENTIAL IMPACTS• Construction duration will be approximately 6months.
• Traffic control measures will be provided
during water line improvements along ‘ĪaoValley Road.
• Park will need to be closed to the publicduring construction for safety reasons.

POTENTIAL IMPACTS• Archaeological monitoring will be proposed during theinitial stages of construction. Monitoring would beextended beyond this period should anything be found inany of the work areas or if such discoveries appear to be
more likely than originally anticipated.
• Excavated soil and rock material will remain in the valley.

• Temporary construction impacts (i.e. noise, dust, runoff,etc.) will be mitigated through implementation of sitespecific best management practices (BMPs).

SLOPE REPAIRS
Apply
shotcreteand soilnails toeroding
slopeProtect
slope toewithgroutedboulder
revetment(Kinihāpai Stream)

DESIGN CONSIDERATIONS• Adding slope toe protection would narrow thestream channel and increase stream velocity.
Alternatives to protect the slope while
maintaining stream capacity are being
considered.
• Costs associated with design alternatives mayrequire additional funding.

LONG-TERM SLOPE STABILIZATION
Existing Parking Lot /Walkway to Summit
Viewing Shelter•

Series of 30-ft reinforcing bars (soilnails) with sculptured shotcrete•Park can remain open duringconstruction•

Approx. $3.5 million and approx.
14 months to construct, subject tofundingLONG-TERM SLOPE STABILIZATION
Existing Shotcrete(Wailuku Stream)

Proposed Shotcrete Example (Diamond Head Monument Rockfall Mitigation)(Before)(After)BREAKOUT SESSION
Environmental Permitting
Archaeological & Cultural Resources

Earl Matsukawa (WOC)
Holly McEldowney (State Parks)

Infrastructure Improvements

John Datiles (DLNR - Engineering)
Glenn Kuwaye (WOC)

Slope Repairs

Brian Chang (DLNR - Engineering)

Long-Range Planning for ‘Īao Valley
DLNR – Division of State Parks

Chris Hart & Partners, Inc.
Russell Kumabe (State Parks)
Larry Pacheco (State Parks)

CLOSING REMARKS
Russell Kumabe
Chief, Planning and Development
DLNR, State Parks(808) 587-0305
russell.p.kumabe@hawaii.gov

Larry Pacheco
Maui District Superintendent
DLNR, State Parks(808) 984-8102
larry.j.pacheco@hawaii.gov

Please visit the DLNR website for other State Parks
information at http://dlnr.hawaii.gov/