MANASOTA & PEACE RIVER BBDs Meeting Notebook 10-21-09.docx

K269
Sarasota Co. - N. Sarasota Co. Reclaimed Water ASRs
Project Type Cooperative Funding
AOR(s)
Water Supply, Water Quality
Basin(s) Manasota
Cooperator(s)
Sarasota County
Project Manager MCGOOKEY, SCOTT
Task Manager(s)
Status Ongoing
Description
This project consists of the design, permitting, and construction of three 1.2 mgd reclaimed water aquifer storage and
recovery (ASR) wells with ultra-violet (UV) disinfection. These ASRs will be constructed at the County's Central County
Wastewater Treatment Facility (WWTF). The ASRs will provide wet weather storage for the County's Northern
Regional Reuse System, consisting of four interconnected county WWTFs's and a interconnection with the City of
Sarasota's Reuse System.
Benefits
The project will provide storage of approximately 1,200,000 gpd for 120 days or 144 million gallons per year for each of
three proposed ASR wells for a total of 432 million gallons per year stored. This will yield a flow of approximately
888,000 gpd of reclaimed water to offset existing ground-water withdrawals and potable service and better serve
existing reclaimed water users such as Palmer Ranch, Manor Care of Boynton Beach, Plaza Oaks, Silver Oak, and the
Hamptons Development.
Costs
The total project cost is estimated to be $6,443,546, and the District's share is requested to be 50 percent, or
$3,221,773. The Manasota Basin has funded $2,011,743 so far, between FY2000 and FY2007, and the WPSTF
provided $164,864 in FY2006/7, for a total of $2,176,607 already budgeted for the project. The Manasota Basin will
fund $1,127,598 in future years. The cost, amortized at 8 percent over 30 years, is $1.75 per thousand gallons of
traditional water offset. Any additional funds are for staff time. The future funds identified for the project are contingent
upon approval of such amounts by the District Governing and Basin Boards in the annual budget(s).
Additional Information
This is a multi-year project that will expand Sarasota County's reclaimed water system by providing wet weather
storage for the interconnected reclaimed water systems of the Sarasota County and City of Sarasota. This regional
system has five wastewater treatment plants with a permitted capacity of 18.5 mgd and a reuse flow of 5.4 mgd that
are now interconnected. This wet weather storage will increase the system's efficiency. Cost history: The original
project was submitted to the SWFWMD in 1998 and was approved for multi-year funding beginning in FY2000 and
ending in FY2005 with a total cost of $3,030,000. Following a lengthy hearing resulting in DEP issuing a permit to
proceed with construction of the first of three ASR wells, a first amendment was approved in 2006, which increased
the total cost and apportioned the District's share as follows: Cost Breakout: FY2000 = $100,000 FY2001 = $550,000
FY2002 = $390,000 FY2003 = $405,000 FY2006 = $311,607 ($286,743 ad valorem $24,864 WPSTF) FY2007 =
$420,000 ($280,000 ad valorem $140,000 WPSTF) FY2010 = $350,000 FY2011 = $350,000 and FY2012 = $427,598.
The County has updated the costs, revised the timeline and also determined that split flow UV disinfection is needed
for this project to ensure that water quality can consistently meet drinking water standards prior to injection into the
aquifer. An added benefit of installing UV disinfection is documented effectiveness in treating water borne pathogens
that are not amenable to chlorine disinfection. The cost of the UV disinfection system for each well is estimated at
$580,000. Of the total project cost of $6,443,546, approximately 83 percent ($5,320,247) is expected to be needed for
construction, and the remainder ($1,123,299) for design and administration.
021 - Manasota Basin 250