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PEP Tank Replacement Evaluation

This workshop presentation provides an evaluation of the PEP tank replacement program and discusses potential upgrades and enhancements. It also outlines the causes of PEP tank failures and proposes solutions for the future.

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PEP Tank Replacement Evaluation

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  1. PEP Tank Replacement Evaluation April 28, 2015 City Council Workshop

  2. City Council Goal 1 Expansion • Objective: To enhance infrastructure in order to maintain quality neighborhoods and business district • Strategy: Projects targeted as highest priority for replacement shall be evaluated for potential upgrade or enhancement • Measurement: Provide City Council with a presentation of the existing PEP tank replacement program

  3. City PEP System • PEP system designed by ITT in the early 1970’s as an alternative to the installation of a conventional gravity sewer system in certain areas of the City • 12,825 active PEP tanks and the count is growing every week

  4. PEP Tank Failures2000 - 2014

  5. Why do PEP Systems Fail?

  6. PEP Tank Failures vs. Rainfall2000 - 2014

  7. New PEP Tank Installations2000 - 2014 2003-2006 = 7,197 Multiple Sub-Contractor Installations 2004-2006

  8. 0.50% 0.58% 0.79% 0.67% 0.36% Annualized Failure Rate 182 Tanks Replaced from FY2013 – Q2 FY2015

  9. Potential Causes of PEP Tank Failures • Record Setting Growth in Palm Coast from 2003 through 2006 • Underground Utility Sub-Contractor PEP Tank Installations • Work Site Conditions and Environment • Insufficient Staff for Workload and Inspections of PEP Tank Installations

  10. Solution and Future Plan of Action • Upgrade to Continuous H20 Load Rated PEP Tanks • Continue to Perform Installations and Replacements with City Staff, if Possible • Monitor Growth and Replacements to Ensure Adequate Staffing Level for both Installation and Inspections • Ensure Appropriate Budget to Maintain Program

  11. Water and Wastewater Utility Capital Improvement Plan PEP Tank Installations *Based on 2014 Wastewater Management System Facilities Plan for Growth Inside City Limits with 20% Requiring PEP Tank Installation **Based on Replacement Trends over Last 8 Years

  12. Questions

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