RWA was responsible for the master planning, design, permitting, and construction administration services of a public utility system to provide potable water distribution and sanitary sewer collection service, a public roadway network, and a regional surface water management system to serve a one square mile residential master-planned community on approximately 624.7 acres. Development uses in the subject area include residential single family, residential multi-family, recreational, commercial, and public safety.
Utilities:
The potable water distribution system consists of 2.2 miles of 10” main and .3 miles of 8” main, and provided both potable service and fire protection service for the area. The system was also designed to create an additional loop in the Collier County distribution system, and provides an additional connection between a main trunk line and a dead end line. The sanitary sewer collection system consists of a network of three local pump stations and three small package grinder stations piggybacked into one master pump station, with 1.0 mile of 8” force main, .8 miles of 4” force main, and .5 miles of 2” force main. The system also includes 2.6 miles of sanitary sewer collection manholes and gravity main routed through local street rights of way.
Transportation:
The roadway network includes three canal crossings, three roundabouts, .4 miles of two lane divided urban section road with wide landscaped medians, and 2.8 miles of typical two lane urban section road. All roads incorporate bike paths adjacent to the vehicular travel lanes, as well as separate pedestrian sidewalks on the main roads. The sidewalks are strategically connected to a network of neighborhood walking trails in the area.
Water Resources:
The system incorporates 45 acres of lakes, selected natural areas within a golf course, and 345+ acres of wetlands and conservation areas. A secondary berm through the conservation area provides for both water quality treatment as well as passive recreation for the local residents. Following historic patterns, the system discharges at two locations. The first location is a point discharge into the SFWMD Big Cypress Basin’s Henderson Creek canal. The design restored connectivity of the preserved wetland areas in the basins that discharge to the canal, which had been previously severed by the construction of a FPL transmission main and 170’ wide easement area. The second discharge location is an overland sheet discharge into adjacent offsite wetland areas and existing conservation easements.
Additionally, this project included the widening and deepening of a one mile length of the existing Henderson Creek canal, and the construction of a new weir at the south end of the canal. The widening resulted in an additional 7 acres of surface area within the one mile length, greatly increasing both the storage and the conveyance capacity of the facility. The depth of the canal was increased to a uniform 12’ from the control elevation, eliminating historic high spots and inconsistencies in the bottom of the canal.