urban public policy and sustainability: policy recommendation for the city of mesa
TRANSCRIPT
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Investigators:
Mike Boyle, Vanessa Davis, Rebecca Kervella,
Allison Shannon & Craig Thomas
Urban Public Policy & Sustainability (SOS 594)
School of Sustainability │ Arizona State University
Decreased Wastewater
for Sustainable Development
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To meet this challenge, we must achieve an appropriate balance between
• capacity expansion
• conservation
ChallengeTwo-fold Challenge:As water supplies decrease
Infrastructure stress increases
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Opportunity
for savings
Reduce the need to:
Acquire and develop water resources
Construct new water supply, treatment
and delivery facilities
Construct new wastewater treatment
facilities and infrastructure
Effective Conservation Initiatives
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Creating Sustainable Policies
• To be a sustainable city, Mesa must adopt revenue neutral or better policies that:
• Foster growth in the business sector
• Maximize city services
• Utilize resources wisely
• Promote sustainable practices
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Policy Statement
Sustainable structures
Less burden on city facilities
Reduced development impact fees
(DIF)
A revenue-neutral policy to:
Conserve/manage Mesa’s water resources for future generations
Attract sustainability-minded businesses and development to Mesa
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Wastewater Development Impact Fees
Development Impact Fees (DIF)
• One-time charges applied to offset the additional public-service costs of new development
• Applied at time building permit is issued
• Eight total elements to DIF
On average, wastewater DIF accounts for approximately 30% of fees charged to new developments in Mesa.
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Breaking Down Wastewater DIF
Because wastewater treatment is the most costly aspect, developers who reduce their wastewater output should pay less for the reduced amount of wastewater that needs treated.
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Tiered Wastewater DIF Reduction
Development meets Tier 2 IGCC standards for water resource conservation and efficiency
40% reduction of potable water consumption of fixtures and fittings
20% reduction in wastewater DIF
Development meets Tier 1 IGCC standards for water resource conservation and efficiency
30% reduction of potable water consumption via fixtures and fittings
15% reduction in wastewater DIF
Development meets minimum IGCC standards for water resource conservation and efficiency
20% reduction of potable water consumption via fixtures and fittings
10% reduction in wastewater DIF
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Calculate the Benefits: Pilot Project
• Provides data to quantify efficiency of a policy or program
• Ability to thoroughly study and monitor small scale vs. city-wide
• Provides the opportunity to modify a policy to mitigate any unintended externalities
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A P
ilot
Pro
gram
Op
tio
nVerde Dimora
•Multi-Family Development includes 160 units
• Designed to serve
surrounding community
• Emphasis on building
sustainable and equitable
development
• Projected Wastewater DIF
= $242,560
• Effluent meters can accurately
measure wastewater output
= Location of PAD
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Benefits Quantified
This policy could result in savings up to $48,512 in wastewater development impact fees for Verde Dimora.
Water Savings
20% 30% 40%
$24,256
$36,384
$48,512
Example:
Low-flow toilets, faucets and
showerheads
Example:
Low-flow toilets, faucets and
showerheads
WaterSenseAppliances
Example:
Low-flow toilets, faucets and
showerheads
WaterSenseAppliances
Greywatersystems
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Green Building
Design Standards
Building water use reduction • Plumbing fixtures and fittings • Appliances • HVAC systems and equipment • Roofs • Cooling towers • Commercial food service operations • Medical and laboratory facilities
Site water use reduction• Landscape design • Irrigation system design • Controls
Special water features • Water consumption measurement• Consumption management • Consumption data collection • Data storage and retrieval
Going Beyond Code: Building Technologies Program, Green Building Codes (U.S. Department of Energy)
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Graduated wastewater impact fee policy
Reduced demand on current infrastructure
Decreased need to build new infrastructure
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• Up to $3.4 billion savings over 50 years.
• Residential water and sewer bills could be
reduced by up to $200 million long-term.
• Water-efficient plumbing saves a typical
four-member household 55,800 gallons of
water and $627 in reduced water and
energy annually.
Source: Environmental Protection Agency
A Case Study in Texas
Low-flow toilet use throughout Texas could reduce the need
to build new water and wastewater treatment plants by 15%.
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Saving Water is Good Business
Benefits for the City• Provides incentive to build new
development efficiently
• Competitive advantage to attract new
environmentally conscious businesses
• Reduce the burden on existing
infrastructure
• Reduce the demand for new
wastewater infrastructure
• Conserves Mesa’s water resource
Benefits for Developers• Money saved through reduced DIF can
offset the cost of innovative water
efficient technologies
• IgCC certification is fee-free and voluntary
• Reduced water consumption results in
lower monthly utility costs
• Those who choose not to participate are
not penalized
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Companies planning to use water-efficient
practices and technology will:
• reduce water use by 20%
• decrease energy use by 10 – 11%
• reduce operating costs by 11 – 12%
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Graduated Wastewater DIF:A Sustainable Urban Development Policy for Mesa
•Conserves Mesa’s water resources
•Reduce stress on wastewater infrastructure
•Incentivizes sustainable development
•Fosters business and growth
Summary
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When the well is dry…
We learn the worth of water.—Benjamin Franklin
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Questions?Thank you.