Casne Engineering has been active in water system development for cities, counties, and water
districts since the firm was founded in 1979.
Our specialties include designing power and control
systems for well pumps, water filtration, and treatment for corrosion control and
disinfect ion along with booster pumping to reservoirs or directly into pressure zones.
We design and implement telemetry and control systems
for automatic and supervisory control, monitoring, alarming, paging, and reporting.
BELLINGHAM WATER FILTER PLANT UPGRADE
CITY OF BELLINGHAM; BELLINGHAM, WASHINGTON
Casne Engineering designed the electrical and control systems upgrade to the plant, which consisted
of over 30 motors totaling 950hp and new TI545 PLC with over 250 discrete I/O and 20 analog I/O parts.
Casne programmed the operation and configured graphic user interface SCADA screens for filter and
backwash control and monitoring. Automated portions of the project included automating the filling
of a new two-story soda ash silo from trucks with installation of new weight belt feeders into mixing
tanks and automating control of pH.
Five new chlorinators were installed to automatically control chlorine levels of drinking water pumped
to the chlorine contact tank, as well as for monitoring and boosting chlorine residual before pumping
into the system. Five 150hp service pumps were also installed into a new below grade pump station for
pumping to the Dakin and Yew zone reservoirs.
VANCOUVER WATER STATIONS 1, 14, and 15 IMPROVEMENTS
VANCOUVER, WASHINGTON
Casne Engineering designed the power, controls, and telemetry improvements, and assisted with
construction of these stations. At Water Station #1, Casne designed the addition
of three wells of 250hp, 300hp, and 350hp respectively with solid-state reduced voltage starting,
added a 750kW genset for standby power to Well #2 and chemical treatment for chlorine and fluoride.
We also analyzed and expanded the City-owned 12.47kV power system on site.
At Water Station #14, we designed the new airstripping facility to treat water from the three existing
wells by lowering the pH and to pump treated water to the system. A new service was designed with
new starters for the existing wells and VFD control of the two 125hp booster pumps. Chlorine,
fluoride, and pH are controlled with the new TI545 PLC, which is monitored and controlled from the
City’s central telemetry/SCADA system.
At Water Station #15, a new chemical addition building was designed for pH adjustment and disinfection
using on-site hypochlorite production.
SNOQUALMIE WATER SYSTEM
SNOQUALMIE, WASHINGTON
Casne Engineering designed the power, controls instrumentation, and telemetry system for their new
wellfield, water filter plant, booster pump station, and two reservoirs for serving development at
the newly developed Snoqualmie Ridge. The well field consists of three 175hp submersed well pumps provided
with solid-state reduced voltage starters, and provisions for a future 600kW standby generator and
power two wells.
The filter plant consists of two trains and provisions for a third. Each train consists of oxygen
concentrators, ozone generators and injection, ozone contact tanks, and dual pressurized sand filters.
Modulating valves, control flows between trains, and dual filters on each train. The ozone treatment
removes manganese and iron from the groundwater.
The 1040-zone booster pump station consists of two 100hp pumps with provisions for two additional
100 hp pumps. The station pumps from the 705-zone reservoir to the 1040 reservoir and intermediate
zones through pressure reducing valves. Reduced voltage solid-state starters provide soft starting
and stopping and provisions for a future 400kW generator.
