City Council April 3, 2012 Hickory Aquifer Project Update

City CouncilApril 3, 2012

Hickory Water Supply Update

April 3, 2012

Well Field Collector Pipelines

• Installation of 50,700 feet of pipe to nine wells

• General Contractor: Price Construction

• Pipeline Sub-Contractor: Darnell & Dickson

• Contract Amount: $3.8 million

Well Field Layout

Well Field Collector Pipelines

16 inch Collector Pipeline

Pipeline Installation Between Wells

Collector Pipe At Well #1

Transmission Pipeline

• 62 miles of 30” pipe from well field to San Angelo

• Contractor: Oscar Renda

• Sub-Contractor: S J Lewis

• Contract Amount: $39 million

Transmission Pipeline Route

R.O.W. Preparation

Well Field Development

• Equip 9 existing wells

• 175 to 200 Hp pumps

• Depth setting: 720-830 ft

• Pumping capacity: 500 gpm

Booster Pump Station

Well Field-Booster Pump Station

• Design Complete March 1st

• Advertise for Bids March 23rd

• TCEQ Plan Review in Progress

• Tentative Bid Opening May 1st

Treatment

• Purpose:Remove Radium 226-228 to EPA standard of 5 pCi/L

• Pilot testing of treatment methods:• Ion Exchange: Completed 2011• Reverse Osmosis Pilot Testing 2012

R.O. Pilot Plant

• Test performance of 3 different R.O. membranes

• Startup: February 2012

• Report to TCEQ on results: May 2012

Pilot Test Facility

Reverse Osmosis Pilot

Treatment

• Report to Council: June 2012 - Select treatment method - Begin final design

• Advertise project for bids 2013

• Place in operation 2014

City Council Meeting April 3, 2012