Water Distribution by Century West Engineering
Water Distribution
1997 Water Main Replacement Project; Uniontown, WA
Century West
provided engineering design services for this water main
replacement project. The project included replacing 5700 feet
of 4- and 6-inch deteriorated steel pipe with new PVC water
pipe, replacement of service lines, meter boxes, and fire
hydrants. This project required a fast-track design to complete
the new installation prior to resurfacing the highway by WSDOT.
Eight blocks of the new main is located along U.S. Highway 195,
and required special traffic control and construction
considerations. Century West conducted a public participation
program holding public meetings and discussing the project with
business owners by going door to door. The project was funded
through a Public Works Trust Fund loan and a Farmers Home
Administration loan. Century West also provided construction
management on the project.
2003 Waterline Improvements; Oregon City, OR 
Century West provided design services for approximately 11,000 feet of 6-inch through 12-inch ductile iron waterline to replace existing undersized mains or replace old cast iron pipes. The work included an 800-foot section of 8-inch ductile iron pipe across an ancient landslide. A geotechnical report was provided to identify the slip plane and recommend an acceptable approach to safely install the waterline through this area with minimal risk of a future washout. This involved burying the pipe approximately 15 feet deep and using field-lok joints reducing the potential for the pipe to separate in the future with any earth movement. Construction in the areas also required the need for a COE/DSL permit for work adjacent to and across a small stream.
2005 Water System Improvements, Lamont, WA
Century West
Engineering worked with the Town of Lamont in securing funding
for this much needed water system improvements. We provided a
Small Water System Management Plan, design engineering and
construction management for $1,065,000 improvements to their
water system. System improvements included developing a small
water system management plan, an environmental report, new
well, new water storage reservoir and upgrading the
Town’s water distribution system. Our engineering
services included developing design documents for a new well
with a new pump, electrical controls and well house,
construction of a new 135,000 gallon storage reservoir, and
installing approximately 8,100 feet of transmission line to
connect the well to the City’s distribution system, and
replacement of deteriorated water mains. Some of the major
challenges on the project included securing funding from
multiple sources, locating and acquiring necessary easements
and property for the new well and storage tank.
2007 Water System Improvements, Fairfield, WA
Century West was responsible to the Town of Fairfield for preparing plans, specifications and estimates for the replacement of old four-, six- and eight-inch water lines with an eight-inch line. The project will replace fire hydrants and water meters. This project was constructed in the summer of 2007 and assistance with bidding and construction management was provided.
255K Reservoir Recoating Project; Fairfield WA 
This CDBG funded project included preparing specifications and an estimate for the replacement of the interior and exterior coating of the Town's 255,000 gallon water tank, and assisting the Town through the bidding process. CWEC also provided submittal review, construction quality monitoring, and testing of the coating system as part of construction management services. Century West also helped the Town prepare the CDBG Grant application and provided grant assistance through design and construction.
Carleton Avenue Water Main Replacement; Fairfield, WA
Century West provided design and construction engineering services for this four block water main replacement project. The project was funded in part by the Transportation Improvement Board (TIB) and in part by a CDBG grant. Century West provided all funding documentation, construction observation and quality control for the project. We also provided pay estimates, change orders, and design modifications. The project included tie-ins to the existing water system at five locations.
City of Airway Heights Campbell Street Waterline Project; Airway Heights, WA
Century West provided design and construction management services for this water line replacement project. This project included replacing 2,600 feet of existing 6-inch steel water main with a new 10-inch PVC water main. Other improvements included replacing existing service lines and meter vault assemblies.
City of Salem; Park Avenue Waterline, Salem, OR
Century West prepared plans and specifications for approximately 2,500 feet of 8-inch ductile iron waterlines in the East Salem area. The project was completed as part of a road improvement district in order to minimize construction costs and disruption to the local residents more than once. The contract documents identified extensive coordination requirements with the roadway improvements, sanitary sewer construction, and private utility coordination.
Fairview Well House Reconstruction; Colfax, WA
Century West provided engineering design services for the construction of a concrete block building to replace the pump house building for the city’s Fairview Well. The original concrete block building was in severe disrepair. The design included upgrading of the electrical system by adding a soft start switch for the pump start-up, a surge protection valve, a separate chlorine room within the building with proper ventilation, a tablet chlorination system to replace the existing hypo-chlorite system. The existing cross-connection of the pump start-up discharge pipe to the drainage system was replaced with the proper air gap to meet DOH requirements.
Century West also provided construction management services which included review and approval of Contractor pay requests, submittal review, answering requests for information, and issuing contract change orders.
Fifth Street Waterline Construction; Grandview, WA
Century West provided design and construction management services for 3,800 feet of 12-inch water main from one of the City's domestic water wells into town. Century West also provided quality control surveying and materials testing during construction.
Garry Avenue Transmission Main; Liberty Lake, WA
As general engineering consultant to the Liberty Lake Sewer District, Century West provided engineering design and construction management for this water main replacement project. This 12-inch ductile iron transmission main replaced 3,200 feet of undersized and aging water main. Careful route selection was required along a narrow corridor with existing gas, telephone, and sanitary sewer facilities.
Garry Reservoir, Water Main, and Booster Station Project,
Liberty Lake Sewer and Water Dis
trict, Liberty Lake, WA
Century West designed and provided construction drawings and specifications to the Liberty Lake Sewer and Water District. This project included design of a 250,000 gallon welded steel reservoir, approximately 3,500 linear feet of 8-inch ductile iron water main, and complete renovation of an existing booster station to replace the existing pumps, electrical controls, interior piping, and telemetry system. Century West also provided bidding assistance, and construction management services on the $570,000 project.
Greenridge Water Association, Water System Improvement Study; Liberty Lake, WA
In response to inquiries regarding the feasibility of interconnecting two water systems, the Association requested an investigation by Century West, focusing on the expenditures and improvements needed to allow this private system to become part of an adjacent public water system. The two systems are located at elevations that differ by 500 feet, raising some complicated issues affecting the merger. Century West investigated the Greenridge system and prepared a report to delineate the steps that would need to take place.
Hayford Road Water Line Project; Airway Heights, WA 
Century West provided engineering design and construction management services for the construction of approximately 4,000 feet of 16-inch PVC water main and hydrants for the City of Airway Heights. This waterline fills in a gap in service along Hayford Road and has been constructed to accommodate future service connections.
Highway 27 Water Main Replacement Project; Fairfield, WA
Century West was first involved in this project by assisting the Town in applying for CDBG funds. After funds were granted, Century West provided design, construction management, and grant administration for the project. The project included replacement of approximately 1000 feet of deteriorated and leaking 6-inch steel water main with new 8-inch line, replacement of fire hydrants, and replacement and reconnection of water services. Century West worked closely with the Town to minimize water service disruption and with the State DOT for traffic impacts on State Highway 27.
Lundstrom Street Water Main Project; Airway Heights, WA
Century West is providing engineering design services for the replacement of approximately 2,550 feet of water main, hydrants and services for the City of Airway Heights. The existing 6-inch steel main is undersized and deteriorating and is proposed to be replaced with an 8-inch PVC main.
MeadowWood Golf Course Sewer and Water Improvements; Spokane County, WA
Spokane County Parks Department retained Century West to provide design and construction contract administration services for sewer and water extensions to serve the MeadowWood Golf Course Clubhouse. The project included 1,600 lineal feet of 8-inch diameter sewer and 6,070 lineal feet of 12 and 14 inch ductile iron waterlines that serve the clubhouse and a portion of a residential development adjacent to the golf course.
Our services included the design, daily field inspection, and construction contract administration, and coordination between Spokane County and the utility district. The project required constant coordination of construction contracts between the utilities' contractor, the clubhouse contractor, and the site development contractor in order to complete the construction and obtain all necessary permits and approvals. The facilities were opened to the public ahead of schedule.
Park West Well Redevelopment, Phase I; Airway Heights, WA
Century West Engineering provided engineering services in support of the establishment and development of a new well location on the current Park West Well parcel, including coordination with various agencies, and development of contract documents for the construction and testing of the new well, The City was concerned that the existing Park West Well may be a source of impacts to domestic wells reported by the residents in the vicinity.
Century West met with the City to present and discuss plans, and conceptual alternatives regarding location and features. We researched subsurface utilities and structures in the project area, and incorporated this information into the final design drawings. We coordinated all agencies having jurisdiction or interest in the project including the City of Airway Heights, WSDOH, WSDOE, Four Lakes Water District, the City of Medial Lake, Spokane County, and the Department of Community, Trade, and Economic Development. Coordination included project updates, providing plans and documents for review and comment; completing paperwork and documentation necessary for plan approval; and completion of a SEPA checklist.
Railroad Avenue Water Main Replacement; Fairfield, WA
Century West designed the replacement of 370 feet of water main, hydrants, and services for the Town of Fairfield. The existing 6-inch steel main was undersized and deteriorating, and was replaced with an 8-inch PVC main. Replacement of the water main was critical, because the Town received funding for roadway reconstruction from TIB and TEA-21, and did not want to damage the new pavement.
Second Street Water Main Replacement; Fairfield, WA
Century West provided design and construction management services for this water main replacement project. This project was funded through a Community Development Block Grant. The project included replacement of an old 4-inch steel water main with new 8-inch pipe, replacement of fire hydrants, new service pipes and meters, and asphalt street patching. Century West provided full design services including surveying, geotechnical investigations, and preparation of plans and contract documents. Construction period services included inspection, quality control, progress estimates, and punchlist certification.
South End Road Water System Improvements; Clackamas River Water, Clackamas, OR
Century West provided design services for approximately 6,000 feet of 12-inch ductile iron waterline and 4,000 feet of 8-inch ductile iron waterline to increase the volume of water available within the distribution system. Design services included collection of topographic survey data, coordination with several private utility companies to move facilities and miscellaneous construction sequencing to maintain water services to the adjoining residents.
Supply Well, Pump Station, and Transmission Main; Reardan, WA
The Town of Reardan retained Century West to provide investigation, design services, and construction phase services for this project. Prior to this project, the Town had a history of unsuccessful, low production water supply wells. The site selected by Century West resulted in a reliable supply well that quadrupled the Town's production capability. A new two-mile transmission main was designed and constructed to convey the water to the Town's distribution system.
Funding sources for the project included a Public Works Trust Fund Loan, as well as a Drought Relief Grant. Century West prepared the application to the Department of Health for the grant funds.
ULID #9 Water System Improvements, Liberty Lake Sewer & Water District; Liberty Lake, WA
As general engineering consultant to Liberty Lake Sewer District, Century West has provided preliminary design, final design, cost estimating, and specifications for a variety of water system improvement projects. Some of these projects are funded by utility local improvement districts, or U.L.I.D.'s. In 1994, Century West provided engineering services for U.L.I.D. No. 9, to improve fire flow and system reliability in the southwestern portion of the water system. The project was challenging, due to the need to blast rock from the trenches in a fully developed area.
Water Reservoir; Oroville, WA
Century West provided all design and construction phase engineering services for this 500,000 gallon steel reservoir. The site was carefully selected to meet aesthetic, hydraulic and structural criteria. We performed a complete geotechnical study of the site to assess slope stability and to facilitate cost-effective foundation design. The overflow elevation was matched with that of the city's existing buried reservoir. The geometry of the steel structure was selected to provide a compact tank size and a minimum of excavation into the slope.
The construction phase services included complete quality control testing and inspection services for the structural fill, concrete foundation, piping, steel welding, sandblasting and paint system. Our in-house materials testing laboratory provided rapid test results, allowing the information to be readily available to our field staff.
Water Storage Reservoir; Yacolt, WA
Century West provided complete engineering services for a new 300,000 gallon concrete reservoir. We performed subsurface investigations to determine existing site conditions for the design of reservoir footings. Additional contract responsibilities, after the design was completed, included construction observation and construction administration services. The project was funded by a grant from the Community Development Block Grant Program.
Water System Improvements, Maupin,OR
The project included the construction of approximately 7,000 feet of new, larger mains to replace existing undersized piping. The services included surveying, design and construction administration for the new utilities. Installation of three new pressure-reducing valve stations created a new middle-pressure zone, increasing water pressure and volume. Within the community, funding was provided by a grant administered by the Oregon Community Development Block Grant Program.
Water System Improvements for Oroville Light Industrial Park; Oroville, WA
Century West provided planning, design, and construction management services for the extension of the City’s water system to the new industrial park at the City-owned airport. An engineering study and report was prepared, presenting the background data and basis for the design. The system expansion was designed to accommodate the future needs of the service area in accordance with the City’s adopted comprehensive water plan.
The new improvements consist of 2.5 miles of 12-inch water transmission main, a 200,000 gallon steel reservoir, and a booster pump station. The system at the airport lies in a second pressure zone, and is designed to allow stored water back into the lower pressure zone under emergency conditions.
Water System Improvements; Roseburg, OR
The City of Roseburg hired Century West to design a new 300,000 gallon above-ground steel water storage reservoir located within a newly developed residential subdivision. A major concern addressed during the design period was incorporating low maintenance landscaping around the reservoir to minimize the visual impact of the structure. Subsurface geotechnical explorations were conducted by our staff to insure adequate design of reservoir footings. Modifications to an existing lower level water booster pump station including all telemetry controls were necessary to supply water to the reservoir through 2,000 feet of new water main. Additional contract responsibilities included monitoring construction activities of contractor to insure compliance with the contract documents.
Water System and Street Improvements; Oroville, WA
This project included the construction of approximately 13,000 feet of water mains to replace undersized and, in some cases, dead end mains. New fire hydrants were installed to improve fire fighting capabilities throughout the area. During design, exploratory trenches were dug and soils were tested to determine suitability of native materials for pipe bedding and backfill, and to identify areas requiring rock excavation. The system was computer modeled to allow a rapid analysis of behavior of the system under a variety of demand conditions. The project included the resurfacing of streets in the areas affected by construction. Construction management was also provided by Century West.
Water System Improvements and Water Reservoir; Deer Park, WA
A 600,000-gallon standpipe was designed and constructed to provide improved pressure and fire flow to a growing area of the city. Century West provided a complete range of design engineering and construction contract administration services. Our services also included coordination and administration of the Farmers Home Administration funding for the project. Other elements of the project included water transmission and distribution lines to serve industrial sites, and a 1000-gallon per minute well and pump station.
Well No. 2 Replacement, Airway Heights, WA
Century West Engineering provided engineering services and construction management services for two phases of the drilling of a new well adjacent to the City of Airway Heights Well #2. The new well replaced the old well #2 which had been removed from service due to low production. The drilling of the new well required coordination with several agencies including the WSDOE and the WSDOH.
Century West worked with the City to prepare plans and specifications for both phases of this project. Phase I consisted of the drilling of a 480’ deep, 12” open hole well with a 330’ deep formation seal. Phase II of the project deepened the well from 480’ to 830’ as a 10” open hole with a 480’ deep formation seal.
Century West also provided design and construction management services for piping and electrical upgrades to bring the well into full service.
Wellhead Flood Protection Project; Tekoa, WA 
Century West, on behalf of the City of Tekoa, applied for and received a grant from CDBG to protect the City's drinking water wells. The floods of 1996 and 1997 flooded the well houses, contaminating the City's drinking water. The grant enabled the City to raise the well houses and pumps five feet so that they would be above the 500-year flood elevation. The project included demolishing the existing well houses, constructing new well houses including pump controls, alarms and system telemetry, distribution system modifications and site grading and landscaping. Century West provided design engineering, construction management, and grant administration services to the City.
West Hill Booster Station; Colfax, WA 
Century West reviewed a previous set of plans, specifications, and hydraulic models, and made recommendations to the City of Colfax. We then re-created the hydraulic models, and designed an 1100-foot transmission main for the city. Century West provided bidding assistance and construction management services on this $300,000 project.
Wright Boulevard Waterline Replacement, Liberty Lake, WA
Century West provided design engineering services to the Liberty Lake Sewer and Water District on this project that consisted of approximately 1,800 feet of water main improvements including installation of new 8-inch PVC water main, new service connections and the installation of new fire hydrants. Century West also provided construction management services.
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