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

F033
Peace River Facility Expansion
Project Type WS&R Dev.
AOR(s)
Water Supply
Basin(s) General Fund (District), Peace River, Manasota
Cooperator(s)
Project Manager GOODWIN, AUDRIE
Task Manager(s)
Status Ongoing
Peace River/Manasota Regional Water Supply Auth.
ARMSTRONG, BRIAN
Description
The Peace River Facility Expansion is an alternative water supply project that involves expansion of the Peace River
Manasota Regional Water Supply Authority's water treatment facilities. Whereas, F032 is for the design and
construction of a six billion gallon reservoir, this project is for the design and construction associated with expanding
the surface water treatment plant capacity from 24 to 48 mgd. Additionally, this project will construct five miles of a
20-inch pipeline from the Authority's facilities to extended areas of DeSoto County to supply up to 5.5 mgd to the
county.
Benefits
In combination with F032, this project will enable the Authority to supply up to their permitted quantity of 32.7 mgd on
an annual average basis from the Peace River.
Costs
The total estimated project cost is $90,143,200. The District share is $41,862,232 which includes District ad valorem
funding of $25,943,940 and SB444 funding of $15,918,292. The District's ad valorem cost may be reduced depending
on future funding received from the state, as described in Senate Bill 444. It is anticipated that, of the District's
projected total funding contribution of $25,943,940, the District Governing Board will contribute $14,618,384, the
Manasota Basin Board will contribute $8,625,340, and the Peace River Basin Board will contribute $2,700,216. The
Governing Board met their total funding match in FY2009 and therefore does not have a FY2010 funding contribution.
The FY2010 request of $2,165,568 represents funding from the Peace ($440,678) and Manasota ($1,724,890) Basin
Boards that will maintain the contract percentages.
The funding table below includes lapsed 2008 Governing Board funds of $997,525.
Additional Information
The project originally included the construction of 24 Aquifer Storage and Recovery (ASR) wells for storage of excess
river flows. However, because of the uncertainty involved in permitting ASR wells due to mobilization of arsenic in the
aquifer, the Authority has deferred the ASR component of this project. The Authority provides public drinking water to
residents of Charlotte, DeSoto and Sarasota counties. As configured in 2005, the facility includes a surface water
withdrawal from the Peace River, a 625 million gallon reservoir (85 acres), a 24 mgd surface water treatment plant,
and 21 ASR wells capable of storing up to a total of six billion gallons. Because of the Peace River's seasonal flow
pattern, characterized by significant periods of low flow that are insufficient for providing potable supply, the Peace
River facility must possess the necessary capacity to capture, treat, and store high flows from the river when they
occur so that sufficient reserves are available to meet customer demand during low flow periods. The Authority's water
use permit allows them to supply up to 32.7 mgd on an annual average basis from the Peace River and prohibits
withdrawals when river flow, as measured at the Arcadia gage, is less than 130 cubic feet per second (cfs). The
reservoir and ASR wells provide water during the dry season when withdrawal from the river is prohibited to assure the
environmental health of the downstream estuary. This project also includes the design and construction of a potable
water transmission pipeline known as the DeSoto County Water Transmission Main, which extends from the Peace
River Facility south across the Peace River, then south along Hwy 17, to the Wal-Mart Distribution Facility. This supply
line is to serve potable water customers that DeSoto County Utilities has identified. The combination of this project and
the Peace River Reservoir Expansion (F032) will result in approximately 24 mgd of additional supply at a total cost of
$167,192,854. The project is a critical component of the District's SWUCA water supply plan by providing users in the
coastal areas, where there is the greatest threat of saltwater intrusion, with supplies other than ground water. Of the
total project cost ($90.1 million), approximately $84.7 million is expected to be needed for construction, and the
remainder for design, permitting, and administration.
020 - Peace River Basin 176