Star Sewer & Water District Wastewater Treatment Plant
Keller has worked with Star Sewer & Water District (SSWD) on numerous upgrades to both their lagoon and mechanical WWTPs. These upgrades include blowers, dewatering systems, and, most recently, a full upgrade to their MBR treatment facility to bring the plant into compliance with new phosphorous and ammonia discharge limits. To help SSWD meet the…
Read MoreCLARKSTON SPIRAL ROUNDABOUT
What began with the North Clarkston Circulation Study in 2014 has finally come full circle—literally. The long-anticipated Clarkston Roundabout is open to traffic! Keller worked with the City of Clarkston and stakeholders to transform a complex five-leg signalized intersection into a spiral roundabout that improves safety and traffic flow in one of the busiest parts…
Read MoreSilver Creek Intake
The City of Silverton has two sources of raw water—Silver Creek and Abiqua Creek. The existing raw water intake on Silver Creek reached the end of its useful life. Keller addressed existing deficiencies in the City’s potable water system by designing the replacement for the existing intake structure and pump station—which is expandable to a…
Read MoreOrchard Combat Training Center Railroad Tracks Addition
The Orchard Combat Training Center (OCTC) is a premier joint military training facility in Ada County, Idaho, approximately 18 miles southeast of Boise. OCTC is a vital asset to the Idaho National Guard and Army Reserve, providing world-class training facilities that ensure that units are prepared to respond to any mission. The 143,000-acre training center…
Read MoreWhistle Pig Tank
Veolia turned to Keller to design a 2.65-million-gallon concrete tank. Unlike most water tanks, the Whistle Pig Tank would be fully buried. (Whistle pigs, or groundhogs/ground squirrels, live underground and are native to this area and prime sources of food for birds of prey.) The tank was constructed within a steep hillside to minimize visibility…
Read MoreRigby Wastewater Treatment Plant Improvements
Keller worked with the City of Rigby to identify solutions that would meet the new effluent discharge permit at the wastewater treatment plant and support a rapidly growing community. The Wastewater Treatment Plant Improvements project used innovative technology—Nuvoda Mobile Organic Biofilm, which uses plant material (hemp/kenaf) to enhance biological treatment in an activated sludge system—to…
Read MoreLa Grande, Whiskey Creek Culvert Replacement
The aging Whiskey Creek culvert under OR 204 needed to be replaced according to the Oregon Department of Transportation (ODOT). The undersized structure was too deteriorated to justify repairs and caused challenges for the roadway, motorists and sensitive fish species. Flooding was common during heavy rain or snow melt which created dangerous driving conditions and…
Read MoreWater System Expansion
The Star Sewer & Water District has grown at a staggering rate of more than 10% annually for the last few years, driving the need for improved water supply. Amid this growth, the District’s primary Well 3 unexpectedly began pumping sand and had to be abandoned. The District was also forced to abandon Well 2…
Read MoreWestern States CAT
Keller led the civil site design and building structural engineering of the new Western States CAT equipment facility located in Liberty Lake, WA. Completed in 2022, the 30-acre site incorporates four different buildings; over 197,700 square feet of multi-level office buildings and warehouse space; stairs; elevator; and overhead cranes. Office space typically involves multiple levels…
Read MoreWater System Improvements
Keller worked with the City of Athol when they had concerns about their two cemetery water tanks that needed replacement due to age and wear. A Water Master Plan was developed to address the aging water tanks and insufficient water supply issues discovered during planning. In addition, a nearby development requested to be annexed by…
Read MoreLewiston Wastewater Treatment Plant Improvements
In May of 2018, Keller began working with the City of Lewiston to complete a Wastewater Treatment Plant Facility Planning Study. The WWTP Master Plan evaluated the condition of the WWTP equipment, capacity, redundancy, hydraulics, and treatment performance to determine deficiencies. In fact, several deficiencies were identified, including aging plant facilities—70% of which were over…
Read MoreDam Monitoring
With the use of a Trimble S6 Robotic Total Station and digital leveling, Keller Associates can provide field measurements, analysis, and reporting of existing horizontal and vertical Surveillance Monitoring monuments for your use to meet Federal Energy Regulatory Commission (FERC) requirements. Keller Associates has been using the S6 to achieve the tight tolerances few others…
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