Descriptions of sample projects from each of our service areas are
provided below:
This is a high-level list of our projects. View Featured Projects here ›
8600 South Storm Drain Project
Client: Sandy City
Bowen Collins & Associates designed a large storm drain outfall for Sandy City in the 8600 South Street corridor. This project included the design and construction management services for approximately 20,000 linear feet of main storm drain pipeline that extends from 1700 East to the Jordan River. Pipe diameters ranged from 24 inches to 72 inches. The project also included constructing or modifying three storm drain detention facilities; crossing the TRAX railroad, three canals, I-15, two State roads, and two capped superfund sites. The project required close coordination with Midvale City, Salt Lake City, UDOT, multiple sewer districts, Salt Lake County, several state agencies, several Sandy City apartments, multiple private property owners, and many utility companies to meet the aggressive design and construction schedule for this $8.5 million construction project.
Fiddlers Canyon Flood Control Project
Client: Cedar City
Bowen Collins & Associates completed the Fiddlers Canyon flood control study for Cedar City Corporation. This project was completed to eliminate the 100-year alluvial fan floodplain below the mouth of Fiddlers Canyon in Cedar City, Utah. Bowen Collins & Associates developed new detailed hydrology for the drainage basin, evaluated alternative improvements that would eliminate the alluvial fan floodplain, and prepared a request to FEMA for a Conditional Letter of Map Revision, which then became the basis for design.
The design process included hydrologic modeling and calculations to estimate sediment/debris yields during flood events. We then provided design and construction management services for the construction of recommended improvements. As part of this project, Bowen Collins & Associates designed an 82 acre-foot debris basin and associated channel improvements that will control flooding on an alluvial fan at the northeast end of Cedar City. The debris dam is formed by a 45-foot high earthen embankment and associated flood control facilities. Following construction of the flood control improvements, Bowen Collins & Associates then obtained a letter of map revision from FEMA that eliminated the alluvial fan floodplain.
4.0 MG Reservoir, Well Pump Station and Pipeline
Client: The Preserve at Mapleton and Mapleton City
Bowen Collins & Associates designed a 4.0 million gallon reservoir for Mapleton City to allow for development of an area within the City. The project included construction of a buried concrete reservoir with access road, yard piping, valve vault, drain vault and overflow vault. Also included is 9,950 linear feet of 18-inch HDPE waterline; 140 linear feet of 12-inch HDPE waterline; 1,750 linear feet of
12-inch HPDE drain line; 2,030 linear feet of 24-inch storm drain; 180 linear feet of 30-inch RCP storm drain; 3,600 linear feet of road rough grading for Maple Ridge Road and Brentwood Way with 1,650 linear feet of retaining walls; 4,000 linear feet of construction access road improvements; and installation of a 1,800 gpm, 200 HP well pump in the existing Crowd Canyon Well including a pump station, plumbing, electrical, drainage and back-up generator.
The water tank was constructed with the placement of 30 individual footing pours, 66 individual floor pours, 36 column footing pours, 36 column pours, 30 wall pours, and 12 lid pours. No pour was allowed to be poured back on the existing concrete until a seven day curing period was complete. 7,236 ft of 6 in. water stop was installed in all of the concrete joints. The inside walls and floor of the concrete tank were coated with 1/16” of Xypex modified to coat and seal the tank to insure minimal leakage.
500 South Sewer Replacement Project
Client: Ashley Valley Sewer Management Board
Due to high ground water and deteriorating pipe material, the 500 South Sewer Line in Vernal was experiencing significant infiltration. The sewer line was also reaching its hydraulic capacity. Thus the Ashley Valley Sewer Management Board, who owns and maintains the sewer line, requested BC&A’s services for the design of a replacement sewer line. The sewer line replacement project included over 11,000 linear feet of SDR 35 PVC pipe ranging from 15-inch to 18-inch pipe. The pipeline was constructed within congested city streets, with deep excavations and unstable soils. The new pipeline was constructed along the existing alignment thus bypass pumping of the sewer flows was required for construction of the new pipeline. The high ground water also required significant dewatering and excavation stability measures. This project was constructed for approximately $2.1 million.
Westside Interceptor and Lehi Outfall Rehabilitation
Client: Timpanogos Special Service District
Due to high levels of Hydrogen Sulfide gas, caused by shallow sewer slopes, long force mains, lift station discharges and flat design slopes, the 60” Westside Interceptor and 54” Lehi Outfall lines of the Timpanogos Special Service District experienced heavy corrosion of the existing reinforced concrete pipes. Together with a sub-consultant, BC&A completed an Odor and Corrosion Study of the existing lines, which identified the sources of the hydrogen sulfide gasses and the potential remedies. One the recommended remedies included the full structural rehabilitation of the existing pipes in the areas of greatest corrosion by the Cured-in-place pipe (CIPP) process. A trenchless solution was pursued given the size and depth of the existing pipes, the limited right-of-way and the extremely high groundwater levels in the area. Trenchless construction also shortened the construction schedule, simplified the proposed work and greatly reduced the impacts on adjacent property owners, local streets, and cities. Two separate sites were identified for the rehabilitation effort. As the existing pipes had to be taken out of service while the rehabilitation work took place, the project also included two bypass pumping setups with a capacity of nearly 11 mgd, of which, one of the setups included four separate suction points in order to intercept all flows entering the project pipeline. Due to the size of the existing pipes, the CIPP liners had to be shipped to the site dry and wetted out with the thermosetting resin immediately prior to inversion into the host pipes. In addition to setup and testing of the bypassing pumping systems, the project included the pre-lining cleaning and inspection of the existing pipes, installation and curing of the CIPP liner, post-lining cleaning and video inspection and rehabilitation of 11 associated manholes. Initial cost estimates for the project indicated a potential project cost of nearly $2.5 million. Final construction costs are anticipated at $1.5 million
The rehabilitation project included work in four distinct political jurisdictions, including work in easements on private property and within public rights-of-way. BC&A coordinated with all affected jurisdictions and property owners before and during the work to ensure a smooth project with as little conflicts as possible. Coordination included negotiating temporary construction easements, identifying local jurisdictional traffic control and restoration requirements, and preparation of press releases and notification flyers for local residents.
South Jordan Pump Station and Force Mains
Client: South Valley Sewer District
The South Jordan Pump Station (SJPS), located in the River Front Business Park in South Jordan City, will pump waste water from the District’s collection system to the Jordan Basin Water Reclamation Facility located 3.5 miles south of the pump station. It is designed for an initial peak capacity of 15 MGD and a build-out peak capacity of 50 MGD. The structure will be a reinforced concrete, masonry block and stone veneer building with a metal roof. The project includes installation of two in-channel grinders, four 125 HP non-clog submersible pumps located in a dry pit, mechanical piping, plumbing, indoor odor control system, protective coatings, and HVAC systems.
The project also includes installation of electrical power distribution including motor control centers, diesel-fired 750 kW electrical generator, automatic switches, primary electrical switchgear, supervisory control and data acquisition, telemetry, electrical wiring, lights, fire alarm system and other communication systems.
Due to its location in a business park, the District and local city leaders were very concerned about the control of odors that can be problematic at such facilities. To address and mitigate odors generated by the sewer collection system, this project includes an indoor odor control system consisting of a ventilation systems, make-up air units, and a biofilter.
Civil site work included deep excavation in high ground water conditions, dewatering, subgrade preparation, miscellaneous civil structures such as sewer diversion structures, sewer manholes, large diameter sewer pipe, final grading, landscaping and parking lot construction.
Integral to this project, was the design of the twin 42” O.D. HDPE force mains that carry the wastewater from the lift station, 3.5 miles south, to the new Jordan Basin Water Reclamation Facility along the Jordan River corridor. Design of this force main required coordination and permitting with multiple property owners and local, state and federal agencies including Salt Lake County, Riverton City, South Jordan City, Draper City, State of Utah and the Army Corps of Engineers. The project included alignment analysis and selection, right-of-way/easement acquisition, the horizontal and vertical design of the force main, design and permitting of two crossings of the Jordan River, design and permitting of two major arterial road crossings, wetland permitting and restoration and design of seven air release and vacuum breaker stations.
Project 4D
Client: South Valley Water Reclamation Facility
Bowen Collins & Associates was hired by the South Valley Water Reclamation Facility (SVWRF) to provide planning, detailed design, procurement and construction management services for Project 4D at the wastewater treatment plant located in West Jordan, Utah. Construction cost for the work was approximately $24 million. Project activities are scheduled for completion in late 2010. The SVWRF was originally constructed in 1985 with a nominal treatment capacity of 12.5 mgd. The facility has undergone a series of expansions and improvements (“projects”) since that time. Project 4D is the latest upgrade and will bring the treatment capacity to a minimum of 50 mgd to accommodate substantial additional future wastewater flows and organic loads. Project 4D includes the following work: 1) replacement of six 2500 KW electrical transformers and related upgrades to three on-site substations; 2) new electrical power and control equipment for the oxidation ditches; 3) construction of a utility water filter building; 4) replacements and upgrades to the electrical control system in the solids handling building; 5) complete replacement of the HVAC system in the solids handling building; 6) extensive modifications to oxidation ditches nos. 1-4 for conversion to staged aeration bioreactors for biological nutrient removal using anoxic selectors, (convertible to fermentation basins for BPR). Modifications to the oxidation ditches include removal of existing slow speed aerators, installation of fine bubble aeration diffusers, installation of extensive steel and stainless aeration piping and control valves, installation of stainless steel and redwood baffles to create staged aeration zones and anoxic and fermentation basins, installation of floating and fixed mixers for anoxic and fermentation zones, installation of wall pumps for recycle flows, etc. The following equipment and systems were procured independently and assigned to the general contractor for installation: floating mixers; fine bubble aeration system; large diameter (36” and 72”) steel aeration piping and control valves; 2500 KW electrical transformers and control buildings.
State Capitol Renovation
Client: State Capitol Preservation Board.
Bowen Collins & Associates delivered conceptual, design development and construction documents for the civil portion of the Capitol Renovation Project. This project included significant coordination with Salt Lake City Public Utilities in determining improvements required to bring the State Capitol utility infrastructure into compliance with current fire and city codes. Culinary water lines were upsized both on and off site to deliver the required fire flow to the Capitol Building. The Campus for the State Capitol was not developed with any storm drain detention. As part of the renovation the City required that detention facilities be added. This posed a difficult challenge to incorporate detention on a sloped site that requires a formal landscaping that is not suited for surface detention facilities. This challenge was resolved by working with the landscape architect and construction manager in designing an underground detention facility that worked with the redevelopment of the site and still maintained the formal landscaping. Other design responsibilities included site grading, utility demolition, complete utility replacement on the site, erosion control, mass excavation and a permanent dewatering system.
Acting City Engineer
Client: Wendover City
Bowen Collins & Associates is the current City Engineer for the City of Wendover, Utah. BC&A staff has served as the City Engineer since 1995. The duties being performed include plan review and approvals for all developments within City limits; all engineering, design and construction services required for projects developed and funded directly by the City; engineering consulting services for the City as required for projects ranging from utility work to road and site improvements; and assistance in applying for funding on future projects by grants and/or loans.
Big Springs Environmental Assessment
Client: Provo City
Bowen Collins & Associates is developing an environmental assessment for the City of Provo and the U.S. Forest Service that will involve the development of natural springs and a pipeline through the Uinta National Forest. The waterline is approximately 2 ½ miles in length and will be used for drinking water for the residents of Provo City. Bowen Collins & Associates is conducting the field work, coordinating with the pertinent agencies, providing scoping and developing the environmental document.
Bountiful PCE Superfund Site
Client: Confidential
Bowen Collins & Associates provided technical assistance to a confidential client in negotiation and compliance with a CERCLA Administrative Order on Consent for the Bountiful PCE Superfund Site, Operable Unit #2. Bowen Collins & Associates conducted Remedial Investigations (RI) on the subject property involving soil and groundwater sampling and analyses. Bowen Collins & Associates prepared Superfund work plan documents including Sampling and Analysis Plan, Quality Assurance Project Plan, Data Validation Plan, and Health and Safety Plan. The RI work included angle drilling underneath the building to obtain contaminant profile information. Bowen Collins & Associates coordinated all work under the direction and approval of the US EPA Region 8.
The Oaks East Park and Detention Basin
Client: West Jordan City
Bowen Collins & Associates designed a 4 acre-foot dual-use storm water detention basin and park for West Jordan City, Utah. BC&A developed a storm drain design, site plan, landscape plan and irrigation design for the detention basin and park. The park includes a pavilion, playground and ¼- mile trail around the park perimeter. The site was designed to provide open areas for play, seating, and winter sledding as well as storm water attenuation. Construction of the park and detention basin will be complete in August 2010.