CITY OF MUSTANG

December 16, 2014

Wastewater Treatment Plant Evaluation

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PRESENTATION FOR:

History

Existing Conditions

Proposed Solutions

Future Considerations

Project Schedule

Construction Costs

Q & A

PRESENTATION OVERVIEW

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2007 – Consent Order for Wastewater

Treatment Plant

2008 – Engineering Report approved

(Phase 1 and Phase 2)

2010 – Phase 1 Construction Complete

2012 – Addendum to Consent Order

HISTORY

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Aug. 2014 – Mustang secured Cowan

Group Engineering (CGE) and WDB

Engineering

Aug. 2014 – Comprehensive site visit

conducted at the WWTP

Sept. 2014 – Meeting with DEQ

Nov. 2014 – Technical Memorandum

completed & submitted to DEQ

HISTORY

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Design Flow Rate

Headworks

Grit Removal System & Associated Piping

Digester Basin

Waste Activated Sludge Holding Basin

Storm Holding Basins

SCADA/SBR Data Communications

EXISTING CONDITIONS

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WWTP SITE MAP

1. Headworks : Piping Modification in Pipe Gallery

PROPOSED SOLUTIONS

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2. Site Piping Modifications to Bypass Digester and

Repair Digester Basin Air Piping

PROPOSED SOLUTIONS

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3. Communications from Aqua-Aerobic to SCADA

PROPOSED SOLUTIONS

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4. Modification of Existing SBR Mixers to Include a

Reversal Mode

PROPOSED SOLUTIONS

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5. Headworks : New Bar Screen,

Headworks Pumps and Flow Metering

PROPOSED SOLUTIONS

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6. Clean Existing SBR Basins & Mixers

PROPOSED SOLUTIONS

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7. Install Floating Aerators in Storm Holding Basins

PROPOSED SOLUTIONS

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8. Add Aeration to Waste Activated Sludge Holding

Basin

PROPOSED SOLUTIONS

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9. Add/Repair Flow Meters to Measure Flow to/from

Storm Holding Basin

PROPOSED SOLUTIONS

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EXAMPLE MAGNETIC METER

10. Evaluate Grit Removal System & Piping

PROPOSED SOLUTIONS

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Phase IIA - Immediate

1. Headworks Piping Modifications

2. Site Piping Modifications

3. SCADA/SBR Communications

4. SBR Mixer Modification

PROJECT SCHEDULE

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Phase IIB – Completion Date 11/1/2015

5. Headworks Bar Screen, New Pumps

and Flow Metering

6. Clean SBR Basins

7. Install Floating Aerators in Storm

Holding Basins

8. Add Aeration to WAS Holding Basin

9. Add Flow Meter to/from Storm Holding

Basin

PROJECT SCHEDULE

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Phase IIC – Completion Date 11/1/2015

10. Evaluate Grit Removal System

PROJECT SCHEDULE

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Phase IID – WWTP Expansion

Increase Capacity

Improve/Additional Treatment to Meet

New 208 Plan for Discharge to Canadian

River

Completion Date for Engineering Report –

7/1/2016

Water Reuse

FUTURE CONSIDERATIONS

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Conceptual Construction Costs

Phase IIA - $133,500

Phase IIB - $840,000

Phase IIC - TBD

Phase IID - TBD

CONSTRUCTION COSTS

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QUESTION

&

ANSWER

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