Submitted By: Hector Colon
presenter
Presentation By: Sean Lanier
end
Department: Engineering
FORMAL TITLE:
title
Amendment No. 5 to the Professional Design Services Agreement for Water Treatment Plant No. 2 with Kimley-Horn and Associates, Inc.
end
OCALA'S RELEVANT STRATEGIC GOALS:
Operational Excellence, Quality of Place
PROOF OF PUBLICATION:
N/A
body
BACKGROUND:
The original Water Treatment Plant No.2 (WTP-2) design scope, now approximately 90 percent complete, was based on constructing a water treatment plant (WTP) that would blend water from the Upper Floridan Aquifer (UFA) with the Lower Floridan Aquifer (LFA) to produce nine million gallons per day (MGD). However, during coordination with the City's Construction Manager at Risk (CMAR), estimated construction costs have escalated dramatically from the pre-design estimate of $72 million to $265 million based on the 90 percent design, rendering the project financially unfeasible.
Following discussions with the St. Johns River Water Management District, the team initiated a value engineering and cost-saving strategy to phase the construction of the plant. The plan is to postpone the LFA phase, which utilizes membrane filtration as the treatment method and is responsible for most of the escalation in construction costs. As a result, the project scope has been revised to prioritize the design and construction of a 13.5 MGD Upper Floridan Aquifer (UFA) facility for the first phase of construction, thereby meeting the City's immediate water supply needs. Additionally, the team will evaluate electrocoagulation (EC) as an alternative treatment method to membrane filtration for the LFA. Most of the existing LFA design will remain usable even if EC is eventually chosen as the treatment method for the LFA phase.
Electrocoagulation is an advanced water treatment process that utilizes electricity to remove contaminants from water. At its core, the process involves passing an electric current through...
Click here for full text