Site Development Projects
2006 Site Improvements; UPS, Portland, OR
Century west provided design services for the design of civil site improvements to UPS’ Portland South facility – a 14-acre site located in Portland’s Swan Island Industrial Area. Civil site improvements included: configuration and layout of truck staging, inspection, and parking areas, employee parking areas, repaving; the design of a stormwater infiltration facility, onsite storm sewers, and inlets; extension of water and sewer facilities for a truck wash and fuel island; and location for the truck wash, fuel island, and above-ground fuel storage tanks, and production of a Spill Prevention, Control, and Countermeasures (SPCC) Plan. A key feature of the site design was the design of stormwater facilities. Because of UPS desire to maximize to the fullest extent possible, CWEC recommended that the infiltration facility be engineered rather than designed based on a simplified approach outlined in the City’s stormwater management manual. This allowed for a design that allowed the facility size to be reduced by 50%, gaining the client an additional 1acre of usable area for their operations.
Brownfield Redevelopment – Old Mill District, Oregon River Bend Development LLC, Bend, OR
The Old Mill District
occupies approximately 250 acres in the south-central portion
of Bend, Oregon. The district is bisected by the Deschutes
River which is used for drinking water, irrigation, and
recreation both upstream and downstream of the site. The
property was originally developed by the Brooks-Scanlon Lumber
Company in 1922. Two lumber mills operated on the site for 72
years until 1994.
During a 1993 hazardous waste inspection, the DEQ identified suspected releases of hazardous substances from improper disposal of spent solvents and wood-treating sludges. Subsequent investigations revealed that subsurface soils and shallow groundwater had been contaminated by historic mill activities and the site was listed on the DEQ’s Confirmed Release List (CRL) in July 1996.
In August 1996, the River Bend Limited Partnership (RBLP) entered the district into the DEQ’s Voluntary Cleanup Program (VCP) to facilitate site cleanup, obtain a “no further action” (NFA) determination by the DEQ, and accelerate site development. On behalf of RBLP, Century West, the sole environmental consultant, completed investigations to delineate and characterize contamination in areas of environmental concern. Century West then combined remediation, risk-based evaluation, and modeling to clean up the site in a cost effective and timely manner. The remedial and risk evaluation strategies employed at the site are protective of human health and the environment, while maximizing development options.
Cooperative involvement with regulatory agency to lead to a DEQ
NFA determination for the site in January 1999, approximately
two years after the site was listed on the CRL. The close
working relationship between RBLP, the DEQ, and Century West
allowed portions of property to be fast tracked for
redevelopment, additional parcels to be evaluated
under
the same agreement, and development of the site with no
restrictions on future use of the land and groundwater.
In recognition of outstanding teamwork between RBLP and the DEQ, the Old Mill District was selected to receive a Phoenix Award in 2002. The Phoenix Awards are nationally recognized as the top award for excellence in brownfield redevelopment.
Deschutes Brewery Warehouse Expansion; Bend, OR
Design of site improvements
for a warehouse facility. Because of the site’s low
elevation, and the site’s proximity to two community
drinking water wells, the site stormwater facilities were
designed to limit the use and location of drywells, as well as
provide significant treatment for pollution reduction prior to
discharge. The stormwater system designed for their facility
utilized a series of treatment steps consisting of trapped
catch basins, vegetated swales, and filtration of treated
stormwater. In addition, opportunities for disposal via
infiltration from the surface were maximized. By maximizing
onsite infiltration from the ground surface, the sites need for
underground injection was reduced to a single drywell. Century
West performed all hydrological analyses, oversaw site grading
drainage design, completed the application for registration and
rule authorization of the drywell, and oversaw the remaining
plans preparation for all other site infrastructure not related
to the building.
Spokane County Engineering Services; Spokane, Washington
Century West was selected as the County’s engineering
consultant for miscellaneous projects in 1991 for a five year
period. We provided services during that contract primarily to
the Parks, Recreation and Fair Department. Divisions of
Utilities and Engineering also utilized our services during
that time. We provided design services for parking lots, sewer
extensions, grading plans, park improvements such as
tennis/basketball courts, stormwater control facilities, street
improvements and bridge repair/reconstruction. We also provided
surveying services of park and golf course boundaries,
topographic surveys of parks and the Interstate Fairgrounds,
and construction staking services. Construction inspection and
materials testing services were provided on many of the
projects. The following is an example of the projects on which
we provided services to the County:
Boundary Surveys:
* Hangman Valley Golf Course
* MeadowWood Golf Course
* Holmberg Park
* Dishman Hills Conservation Area
* Hangman Creek Conservation Area
Topographic Surveys:
* Little Spokane River Nature Lodge
* Holmberg and Sullivan Parks
* Terrace View Park
* Brown’s Park
* Spokane Interstate Fairground
Structural Engineering:
* Valley Mission Senior Citizen Center
Structural Analysis
* Repair and Replacement of the Bridges at Hangman Valley
Golf Course
Reports/Reviews:
* Liberty Lake County Park Off Road Vehicle
Erosion Analysis
* Fish Lake County Park On-Site Sewage System
* Reviews for construction bond amounts for County
Engineers
* Review of County swimming pool condition report
Engineering Services:
* Sewer service extension at Sullivan,
Holmberg, Terrace View and Liberty Lake County Parks
* Parking lot improvements at Shields, Edgecliff and
Holmberg Parks
* Tennis/basketball court design at Holmberg Park
* Stormwater collection/disposal facilities at Edgecliff
and Shields Parks, and at five locations around Liberty Lake to
reduce flooding and point source discharge into the lake.
Spokane Interstate Fairgrounds:
* Utility extensions for three expansion
projects: Agriculture/Llama/Sheep Exhibit Hall, Youth Building
Relocation, and the 40,000 sf Exhibit Hall Project
* Parking lot improvements to the main parking lot
including stormwater collection/disposal facilities
* Spokane Indian Stadium field grading and improvements
Construction Services:
Construction management and materials testing was provided for
the following projects:
* Shields Park Parking Lot * Edgecliff
Park Parking Lots
* Holmberg Tennis/Basketball Courts * Holmberg
Sewer Service Projects (2)
* Sullivan Road Sewer Services * Terrace
View Sewer Service
* Liberty Lake County Park Campground Sewer Extension
Spokane Interstate Fairgrounds; Spokane, Washington
Century West provided topographic surveys, sewer and water extensions and grading/drainage plans for the fairgrounds. Spokane County Parks, the fairgrounds administrator, has been expanding and upgrading the fairgrounds. Our services included the following:
Main Exhibit Building Expansion: This expansion project was for a new 40,000 sf exhibit hall to replace three older exhibit annexes. The project required the extension of 1500 lf of 12-inch water main, parking and loading dock paving, and a complete rework of the main 1200 car parking lot including stormwater control and disposal facilities to meet the County’s guidelines.
Spokane Indians Stadium: We provided grading/drainage and facilities upgrade plans for the baseball stadium field improvements.
Fairgrounds Improvements: The fairgrounds improvements included new poultry, sheep and llama exhibit buildings, a model old west town and large/small gauge railroad exhibits. Century West provided topographic surveys of the fairgrounds. We also provided sanitary sewer plans and domestic water/fire protection plans for these improvements.
Youth Building Relocation: As part of the fairgrounds improvements, the Youth Building was relocated to the fairgrounds entrance. The building was renovated to provide a new office for the expanded County office of Parks, Recreation and Fair. We provided topographic survey and utility service extension design for this project.
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