ADOPTED BUDGET RESOURCE ALLOCATION PLAN - City of ...

Project: 825111 Tertiary Plant Tank Drainage System Modifications
Origination Year: 2003-04
Planned Completion Year: 2010-11
Department: Public Works
Project Description / Scope / Purpose
Project Information Sheet
Type: Wastewater
Category: Infrastructure
Project Manager: Hira Raina
Fund: 465 Wastewater Management Fund
Sub-Fund: 300 Wastewater Infrastructure Subfund
Project Coordinator: Joanna De Sa
The tertiary plant tank drainage system at the Water Pollution Control Plant (WPCP) is used to drain chlorine contact tanks, fixed growth reactor tanks and air floatation tanks should any of these
tanks need to be shut down for maintenance. The original drainage structure and pump station were built in 1975. The rate of drainage has noticeably slowed during the last couple of years, and it
appears that some of the drainage piping is failing. The inability to drain these tanks quickly and efficiently for repairs compromises the City’s ability to meet all NPDES discharge requirements
because tanks would be unavailable to provide treatment. In addition, since the production of recycled water has become a regular component of operations, the inability to quickly accomplish
repairs also compromises the reliability of recycled water deliveries.
This project encompasses both the study and the subsequent engineering design work. The design is complete. Bids have been received and the project has been awarded. Construction began in
December 2008. Delays on construction may be incurred due to availability of structure during rainy season. Project should be completed by the end of FY 2008/09.
Project Evaluation and Analysis
This project addressed alternatives for repair/rehabilitation, based on conditions found and engineering alternatives available to accomplish same. Justification for the project is to fix an observed
problem that if not corrected, could result in violations and fines, and possibly regulatory mandates for repair.
Fiscal Impact
This project will be funded from Wastewater Revenues. Operating costs will not be impacted significantly. The useful life of repairs is estimated to be 30 years.
Project Financial Summary
Financial Data Prior
Actual
Project Costs
Revenues
Total
Transfers-In
Total
Operating Costs
Current 2010-11 2011-12 2012-13 2013-14 2014-15 2015-16 2016-17 2017-18 2018-19 2019-20 Y11-Y20
2009-10
Total
Project
Life Total
50,322 299,226 0 0 0 0 0 0 0 0 0 0
0 349,548
0 0 0 0 0 0 0 0 0 0 0 0
0 0
0 0 0 0 0 0 0 0 0 0 0 0
0 0
0 0 0 0 0 0 0 0 0 0 0 0
0 0
Tertiary Plant Tank Drainage System Modifications 825111