City of Corpus Christi Water Resource Management

April 8, 2014

Overview

• Corpus Christi Regional Water System Overview

• Water Management Strategies• Future Water Supply-Demand

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Current Water Supply System

• Corpus Christi provides water to 18 cities and communities in the Coastal Bend

• Customers include nearly 500,000 residents, as well as diverse businesses and industries

• In FY, 2013 annual consumption of region was 39,907,000,000 gallons (122,469 acre-feet)

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Corpus Christi Regional Water Supply System

Corpus Christi

Choke Canyon Reservoir

Lake Texana

Lake Corpus Christi

San Antonio

Capacity of ReservoirsIn Nueces Basin: 952,531 ac-ftLake Texana: 161,085 ac-ft

How much can we use?In Nueces Basin (consumptive rights): 443,898 ac-ft / yearLake Texana (contract): 41,840 ac-ft / year

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Safe Yield 206,000 Ac-ftAverage Annual Demand 120,000 Ac-ftSurplus 86,000 Ac-ftGarwood rights Add- 35,000 Ac-ft

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Water Supplies in the System

Communities Relying

On Regional Surface

Water System

ALICE

BEEVILLETHREERIVER

S

PORTLAND

KINGSVILLE

PORTARANSAS

FULTONROCKPORT

INGLESIDE

CORPUSCHRISTI

ARANSASPASS

BISHOP

DRISCOLL

ROBSTOWN

MATHIS

Regional Water Planning

• Regional water planning process mandated by state in 1997

• 16 regions• Coastal Bend is Region

“N”• Has 11 Counties

• Involves multiple stakeholders

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Recommended Water Management Strategies (WMS) in the 2011 Region N

Plan• Mary Rhodes Ph II -Construction to start

April 2014• Water Conservation• Reclaimed Wastewater Supplies• Variable Salinity Desalinization

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Potential Industrial Demands

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County Industry Maximum Usage (ac-ft/year)

First Year of Delivery

San Patricio Tianjin Pipe 2,200 2014

San Patricio Cheniere Gas 3,900 2017

San Patricio Hot Iron Steel 3,900 2016

San Patricio Occidental Fractionator 1,100 2015

San Patricio Occidental Ethylene 3,900 2016

San Patricio Ingleside X 6,700 2017

San Patricio Ingleside Y 2,200 2016

San Patricio Occidental Port 1,700 2016

Nueces LyondellBasell – Project X 900 2014

Nueces LyondellBasell – Plant Expansion 2,200 2016

Nueces M&G Industries – PET Plant 8,200

Total 36,900

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Project Goals and Objectives• Feasibility and cost estimate for desalination in

region• Testing of emerging technologies • Determine basis for design of full scale facility• Be prepared to start full scale facility

Variable Salinity Desalination Project

Overview of Variable Salinity Demonstration

Project•Goals of Project:•Develop a drought resistant “alternative” water supply capable of providing continuous source water to the City’s water supply and distribution system

•Determine the basis for design of a full-scale facility, operating parameters, costing information and product water quality to assess the feasibility of a seawater and/or brackish groundwater supply, including ASR

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Benefits of Desalination/Pilot Project

• Initiate pilot study to continue desalination initiative,

including:• Determine the “Design Criteria” by which we could

go to a full scale plant if this drought continues.• Determine the rate impact of a full scale plant• Take advantage of any state or federal grants and

loans• Seawater sources would be closer than existing

remote water supplies• Reliability of water supply• Economic development opportunities• Pilot studies would provide a focal point for public

attention and education

Overview of Pilot Project

• Project phases• Phase 1 Conceptual Plan

Define potential areas for pilot facilities, considering environmental and technical constraints

• Phase 2 Site Selection/Scoping of Pilot StudyDriven by environmental, land use, technical and financial considerations, all of which will have an impact on the scope and budget of the eventual Phase 3 Project

• Phase 3 Demonstration ProjectAt selected site, water production tests to be conducted in accordance with TCEQ membrane protocol

Next Steps

• Finalize grant award and details• Application for Emerging Technology funds

from state completed

• Seek City Council Approval April 2014 for Phase 2 Site Selection/Scoping of Pilot • Final Phase 3 –Demonstration Pilot to

produce an industrial water • Anticipated time to complete is November

2017

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Desalination - Program Schedule

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Current Contract Estimate: 180 Calendar Days 6 Months

Projected Schedule reflects City Council award in May 2014 with anticipated completion in October 2014.

2014 2015

Q1 Q3 Q4

Next Steps

Equipment Acquisition and Installation

Operating Desalination Demonstration Plant, Technology Testing, and Data Collection

2016

Q4Q3Q2 Q1 Q2 Q3 Q4 Q1 Q2

TM #1

TM #2

TMs #3 & #4

Current Contract Amendment No.1

2014Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Plant Siting and VSD Protocol Development

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• Completed work: $101,932• Site selection and pilot protocol (item going

to City Council on April 22): $1,032,085• Pilot installation and testing: $1,772,700• Funding to come from USBR grant and

water supply development fund

Program Budget

Variable Salinity Desalination Project

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QUESTIONS?

Variable Salinity Demonstration Phase 2 Funding

• US Bureau of Reclamation• $400,000

•City of Corpus Christi

• $ 1.2M

•Total Study Cost $1.6 Million plus in-kind services

•Securing additional funding through state

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Residential - Single Family

31%

Residential - Multi-family

7%Industrial40%

Commercial15%

Institutional5%

Wholesale9%

Customer Demand by Class