city council march 19, 2013 hickory update

Progress Report

March 19, 2013

San Angelo City Council

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Agenda

1. Progress & Schedule Update:a. Transmission Main

b. Booster Pump Station & Well Field

c. Treatment

d. New Groundwater Wells

2. Questions & Discussion

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Transmission Main

NTP January 23, 2012 Substantial Completion: July 16, 2013 Final Completion: September 14, 2013 Current status: Dig-Lay-Bury is approximately

80% complete

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Progress As of March 4, 2013

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Progress Summary

3rd dig-lay-bury crew added through March 14, 2013 to expedite production in BCV areas before nesting season.

Work progressing in both directions Valves and appurtenance work ongoing with dig-

lay-bury Pressure testing starting soon

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Laying Pipe in Rock

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Gate Valve Installation

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Booster Pump Station & Well Field

NTP: June 18, 2012 Substantial Completion: June 18, 2013 Final Completion: July 17, 2013 Current Status: Approximately 50% complete

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Progress Summary Booster pump cans set, backfill underway Foundations for all well buildings underway, most

complete High point and well 6 tank foundations underway. Well cleaning underway Potential delay to current schedule mainly due to

longer than expected time needed to clean and retrofit existing wells

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Hickory Wells 1-9 Background

Wells drilled in the 70s Potential obstructions or items identified by the

initial video survey at some wells TCEQ required cleaning of the well casing at

each well along with the removal of debris or obstructions noted in the initial video survey followed by a new video survey to confirm conditions of wells

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Conditions of Well

Obstruction in Well 4 has been identified as a packing plug. Contractor trying drill and air purge it out of the well.

Obstruction removal and repairs to 3 wells 5 holes in well 7 casing: 1 at 64 feet, 3 at 1,128 feet, and 1

at 2,062 feet. A sleeve can be swaged in at 64 feet and possibly at 1128 feet, but not at 2062 due to the pressure at that depth. Hole at 2062 is completely sealed with grout.

Well 1 liner casing slipped. Attempt will be made to remove the slipped casing.

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Setting block for booster pump station electrical building

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Booster Pump Cans

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Looking East PS & Electrical Building

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Underground electrical at Well 1

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Groundwater Treatment Plant

Groundwater Treatment Facility Disinfection Facility Associated civil work and piping Project Status:

• RRSS Selection and Design NTP: February 6, 2013

• Overall final design: Anticipated completion completion April 30, 2013

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Site Layout

Disinfection Facility Groundwater Treatment Facility

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Disinfection Facility

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Groundwater Treatment Facility

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Groundwater Treatment Facility

Building Dimensions: 208’ – 0” x 133’ – 4”

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Groundwater Treatment Facility

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Disinfection Facility

Building Dimensions:

105’ – 4” x 64’ – 44”

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Disinfection Facility

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Post Design Key MilestonesAnticipated Dates or Schedule

TWDB/TCEQ Review May 1, 2013 through June 30, 2013

Advertise Project May 16, 2013

Bid Project July 9, 2013

Recommendation of Award & Council Approval

July 9 through July 16, 2013

TWDB Release of Funds and NTP August 1, 2013

Substantial Construction Completion for GWTF

July 31, 2014

Final Construction Completion of Project

October 30, 2014

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New Wells

Regulatory hurdle cleared and clearing, grubbing and grinding of cleared material of new wells and ROW complete.

Phase 1: Engineering for “Drilling New Wells” underway. Expected design completion and submittal to TCEQ April 30, 2013

Phase 2: Engineering for “Site Civil, Piping and Equipping New Wells” will start in May 2013

Questions?

March 19, 2013

San Angelo City Council