HomeMy WebLinkAboutCommunication Number 2019-05 Coral Reef Alliance Presentation
Communication No. 2019-05
A Community’s Effort to Manage Wastewater
Impacts to Coral Reefs
January 28, 2019
Communication No. 2019-05
Communication No. 2019-05
At the request of the Community Association (PCA), University of at
2013
Hilo and TNC analyzed water quality and identified wastewater problem
The PCA invited CORAL to lead the effort to find a viable solution
2014
Created the Clean Water for Reefs Advisory Committee
Prepared and released Preliminary Engineering Report
Advisory Committee recommended the onsite treatment facility and the PCA
2015
supported this recommendation
Researched ownership, operations and maintenance, and financing options
2016
Collaborated with researchers and experts to develop a monitoring plan
Presented the costs to determine the financial feasibility of the
recommendation
2017
Conducted extensive community engagement to determine support
Collaborated with county and state government to research funding options
2018
and to advance implementation
Communication No. 2019-05
Communication No. 2019-05
91%
Sites had medium to
= Overall Rating
high pollution scores
76%
Sites exceeded HDOH
standards for bacteria
found in sewage
66%
Sites had high nutrient
levels
Research conducted by UH and TNC. See “ in our Water” handout
HDOH = Department of Health
Communication No. 2019-05
Does the type of
treatment technology
matter?
Dye tracer study:
4 Cesspools
3 ATUs
2 S eptic Tanks
Dye reached shoreline
betw een 5 hours and 10
days
No difference am ong
systems
Time to reach shore
depends on di stance and
geology
Communication No. 2019-05
Conclusions
shorel ine
Sewage
and not at the other resort and maukalocations
no additi onal
treatment after technology
Communication No. 2019-05
Communication No. 2019-05
LOW
High resilience =
Bleaching resistance
Herbivores
Coral recruitment
Coral disease
Communication No. 2019-05
Ways to Increase Reef Resilience
Reduce land - based
poll ution
Reduce overfishing,
esp. her bivores
Reduce CO emissions
2
Communication No. 2019-05
Preliminary Engineering Report Evaluation Matrix
Kalahuipua’a
Onsite
(MaunaLani )
Treatment ATU
Facility
40 - Year Capital and
Operating Cost $18 million $20.8 million $22.4 million
Environmental
Highest Secondbest Lowest
Benefit
st nd rd
TOTAL 1 2 3
All options were deemed feasible
Communication No. 2019-05
Estimated Annual Cost
Total Annual Cost Range: Facility
Square Footage Categories
Rate ( i : 3.5 - 4.5%) + O&M
< 1,000
$2,800 - $3,200
1,000 to 2,250 $3,800 - $4,200
2,251 to 3,500 $4,800 - $5,200
3,501 to 4,750 $5,800 - $6,200
4,751 to 6,000 $6,800 - $7,200
>6,000 $7,800 - $8,200
Undeveloped lot / half acre $4,600 - $5,300
Communication No. 2019-05
Goals:
• Sewer the community
• Treat to the highest reusable standard and discharge
away f rom shore
• Implement as soon as possible
Communication No. 2019-05
We are on the map!
• 2017 Act 125: Statewide
cess pool transition by 2050
• is 1 of 14 priority areas
• 2018 Ac t 132: Cesspool Working
Gr oup
Communication No. 2019-05
Our Current Goal:
1. County owned collection system
2. Financing through Chapter 12
3. Potential to connect to the Kalahuipua’a Lagoon
Facilit y
4. Way to make it affordable to homeowners
Communication No. 2019-05
Support
To Secure the Health of the Community
&
Go to: coral.org/puako
C omplete by February 8, 2017