CIVIL: WATER RESOURCES

BASIN A PUMP STATION
Lauderhill, Florida

C3TS provided engineering and construction administration services for this three-pump stormwater pump station. The project required two 40,000 gpm line shaft axial flow pumps with 145 hp natural gas caterpillar engines and a third pump provided for back ups. Pumps operate in a automatic mode and start when storm stage levels rise. The facility includes a reinforced masonry structure that houses the engines, controls the generator and communications equipment. The project was constructed within budget for $1.5 million.

Included with this project, C3TS prepared the preliminary engineering report. Capacity = 78, 800gpm (175 cfs) @ 7.5’TH (three pumps – 39,400 gpm each, one as backup). Additional services included:

BASIN B PUMP STATION
Lauderhill, Florida

C3TS provided engineering and construction administration services for the design and specifications of a two-pump stormwater pump station. Project required a 44,000 gpm line shaft axial-flow pump with a 145 hp natural gas caterpillar engine and a second pump as a back up. Station operates under an automatic mode. A reinforced masonry structure houses the engines, controls, generator, and RTU, etc. Projected cost $2.3 million.

Included with this project, C3TS prepared preliminary engineering Report.
Capacity = 44, 000gpm (98 cfs) @ 4.5’TH (Two Pumps – 44,000 gpm, one as backup). Additional services included:

HIGHLAND VILLAGE NEIGHBORHOOD IMPROVEMENTS
North Miami Beach, Florida

Highland Village is a residential mobile home park located in the City of North Miami Beach, Florida adjacent to the Biscayne Bay Aquatic Preserve with over 600 low-income residents living in the community. The neighborhood was experiencing septic tank failures due to low site elevations and high groundwater levels resulting in human waste pollution of the adjacent wetlands. C3TS conducted preliminary environmental and hydrological studies, planning, and final design of wastewater and stormwater management systems. Federal funds assisted this multi-phase construction approach in the construction of a wastewater collection and transmission system to replace septic tanks, and an area-wide stormwater management plan that includes overflows to wetlands and excess runoff pumping into surface aquifer wells.

C3TS prepared a NEPA Environmental Information Document to substantiate the need and specify the use of these funds.
The first phase of the stormwater management component includes the installation of 4,500 l.f. of drainage pipes, three stormwater treatment units for separation of solids, and a below-ground stormwater pump station using electrical submersible vertical mixed-flow pumps (2,700 gpm capacity at 18-feet TDH, 30 HP, and abrasion resistant impeller) using 30-inch diameter tube, and discharging to a 24-inch diameter x 200-foot deep well. Stormwater pretreatment consists of solids and sediments separation accomplished by a 6-foot diameter x 16-foot deep stormwater treatment structure that uses gravity, centrifugal force, and separation screens. Oil and grease are also separated hydraulically prior to entering the pump station.

The pump station is controlled via adjustable floats, an automatic controller with stand-by generator connection capability, and telemetry, which is connected to the City’s system. The City operates a stormwater utility, which is outfitted with portable electrical generators. The pump station can also be by-passed and portable pumps installed to pump directly into the open well pipe, which is connected to an overflow that limits the head of water that can be placed upon the well. The design allows for each pump station to be connected to up to 3 wells via a manifold pipe, allowing each well to be valved off and to either work in parallel or independently from the others.

PUMP STATION D-2
Palm Beach, Florida

C3TS provided Bid and Construction Documents for a new municipal stormwater pump station for the Town of Palm Beach in Palm Beach County, Florida. The project includes preparation of an Engineering Design Report, Drawings, and Specifications. The Station is designed to discharge up to 55,500 gpm (124 cu. ft. per minute) to Lake Worth (Atlantic Intra-coastal Waterway). The Station includes three 18,500 gpm electric, submersible, mixed-flow 200 hp propeller driven pumps within a large reinforced concrete below-ground wet well.

MIAMI DADE D.E.R.M. / F.E.M.A. - CANAL DREDGING
Miami, Florida

C3TS was selected to design the canal dredging for over four miles of canal system which is the backbone of the drainage system in Miami-Dade County. These canals had been damaged as a result of two major storms (Hurricane Irene and the “no name” storm of 1999) which produced large amounts of flow plugging the system with debris and creating canal bank wash-outs which reduced their flow capacity. C3TS analyzed the original design flows for the canal system and coordinated with surveyors on site to determine the amount of material/debris to be removed from the canal in order to repair damage and restore adequate transmission capacity to the drainage system in order to minimize future widespread flooding. The design also included re-establishing canal banks and restoring washouts to prevent future erosion impacts.

MIAMI-DADE DIVISION OF RECOVERY MITIGATION (D.O.R.M.) – LEISURE CITY IMPROVEMENTS
Miami, Florida

C3TS was responsible for the design of the stormwater system for an existing 160-acre flood prone residential neighborhood within a well field.  Proposed design removes all existing slab covered trench and upgrades the drainage system to current Miami-Dade Public Works and DERM standards.  Runoff within the well field had to be conveyed outside the well field cone of influence to treat for quality and quantity considerations.

Additionally, C3TS worked on the Leisure, Brentwood & Leslie Estates projects developing stormwater improvements to these residential neighborhoods including major arterial roadways, and encompassing more than ¼ square mile within a well-field area. The total project costs were over $2 million.  C3TS also worked on the drainage design of 34 sites throughout Miami-Dade County totaling over 12 miles of roadway, including several section line and half section line roads.