TROY, ILLINOIS The City of Troy, Illinois procured the engineering services of Gonzalez to identify the water distribution needs of the City for a 20-year period. Using projected population growth information provided by the City, Gonzalez developed a hydraulic model of the City’s water supply and distribution system to identify areas of needed improvement and expansion.
Gonzalez then performed the design of the City’s new treatment plant to meet the projected water supply needs. New high-rate pressure filtration units that have media to remove iron and manganese were selected to minimize the treatment plant’s footprint while still providing improved water quality to meet the projected water demands. This resulted in savings to the City of Troy in both capital as well as operating cost. The new plant capacity is 3,000 gallons per minute, or 4.32 million gallons per day.
Design services for the water distribution system included: hydraulic modeling, master planning, sizing and design of a water storage tank, and design of new water distribution mains. The improvements include a 2 million gallon, precast concrete, wire-wound ground storage tank and booster pump station; a 12-inch tapping sleeve and valve with 16-inch reducer; 7,200 feet of 16-inch PVC pipe, including 246 feet of 24-inch bore and casing under Interstate 55; and a 12-inch PVC tank bypass.
Design services at the plant included: design of a new 1,000 gpm, gravel packed water well; increased capacity for well pumps on wells 2, 3, and 4; design of plant process water piping systems; building modifications to accommodate new high-capacity filtration equipment; filter backwash settling tank; design of a new 500,000 gallon, precast, wire-wound, partially buried concrete tank; electrical upgrades; instrumentation and SCADA upgrades; design of a high-service pump station; site security; and site improvements including precast concrete fencing to meet aesthetic requirements for the project area.
