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To see projects in a specific technical specialty follow the links below:
Hazardous Waste
Selected Project Experience
Gas Works Park Phase II EIS and Brownfield Redevelopment - Seattle, WA
Parametrix was retained by the City of Seattle Parks and Recreation Department to implement remedial actions at Seattle’s Gas Works Park on Lake Union. Parametrix’ work involved site investigation of soil and groundwater contaminated from past fuel storage and coal gasification activities at the site. Parametrix was an integral member of the remedial design team that executed an air sparging, soil vapor extraction system as the preferred remedial action.
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Evergreen Park Brownfields Redevelopment (2002 Vision 2020 Award)
City of Bremerton, WA - Evergreen Park Brownfields Redevelopment. Transformed a chemically-contaminated industrial site on Bremerton's waterfront into the City's premier public space. Demonstrates the integration of landscape architects, waste management professionals, and environmental scientists. Vision 2020 Award winner.
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St. Paul Waterway Remediation and Restoration Project - Simpson Tacoma Kraft Mill, WA
Parametrix was hired by Champion International and Simpson Paper Company to investigate the nature and extent of the marine sediment contamination, evaluate alternatives and develop remedial actions, and develop habitat enhancement measures for the contaminated sediment area. Parametrix staff prepared a work plan, approved by EPA, and conducted sediment sampling to define the nature and extent of chemical contaminants, and organic debris. Our engineers designed a new outfall and assisted Simpson with source control to prevent the contamination problems from recurring. We developed a dredge and disposal plan for nearshore capping of the contaminated sediments using native sediments from the Puyallup River Delta. Additionally, we prepared the environmental documents required to evaluate the impacts on the natural environment, including a monitoring plan for water quality, sediment quality and marine biota.
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Groundwater Remediation - Port of Vancouver, WA
Parametrix was selected to assist the Port of Vancouver (Port) with the characterization and remediation of soil and groundwater contaminated by Trichloroethylene (TCE), an industrial solvent. Solvent contamination was a result of the historic manufacturing of electrical heaters at the site. At the time the Port purchased the property, industrial operations had ceased and a restaurant occupied the site. Preliminary data indicated the likelihood of significant contamination and the Port entered into an Agreed Order with the Washington Department of Ecology (Ecology) to conduct a Remedial Investigation and Feasibility Study (RI/FS) under the Model Toxic Control Act (MTCA). The project is ongoing.
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Columbia & Buffalo Sloughs - City of Portland Bureau of Environmental Services, OR
As part of the Columbia Slough Sediment RI/FS, Parametrix and the City of Portland prepared and implemented a Sampling and Analysis Program (SAP) for the Buffalo Slough.
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Lavaca Bay Superfund Site RI/FS - ALCOA, Point Comfort, TX
Parametrix conducted a remedial investigation and interim remedial actions of sediments offshore to address contaminated sediments from a historical chlor-alkali facility. The primary chemical of concern at the site was mercury, which was used in the manufacture of chlorine and caustic. The mercury released resulted in elevated concentrations in sediments and some biota species in Lavaca Bay and led to the closure of portions of Lavaca Bay by the Texas Department of Health for the harvest of finfish and crab for human consumption. In addition, elevated levels of mercury in sediments offshore of the facility raised concerns for the ecological health of the estuary and the rest of the 64 square-mile area of the Matagorda Bay marine eco-system.
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Air and Water Quality
Selected Project Experience
NPDES Permits for Temperature (lower Columbia River Pulp Mills) - Northwest Pulp & Paper Association
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NPDES Permitting and Cooling Tower Engineering Design on the Columbia Slough - Simpson Timber Company, Oregon
Parametrix assisted Simpson in preparing an NPDES permit and outfall design for a stormwater outfall that discharges into the Columbia Slough. Parametrix reviewed historic water quality data, collected water quality samples for analysis, and summarized site description information required for the permit. One permit was submitted to the State of Oregon Department of Environmental Quality for review and approval. Parametrix' engineering staff evaluated the existing outfall condition, developed alternative outfall design cost estimates, water quality improvements, and prepared the final outfall design and construction specifications.
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Design and Implementation of an Ddvanced Oxidation Treatment System for Industrial Wastewater Treatment - Res-Asarco, Colorado
Parametrix provided design and construction services for an ozone-based treatment system to bring Res-Asarco into compliance with discharge standards at the Black Cloud Mine located in Leadville, Colorado. The treatment system was designed to treat a flow rate of 1,000 gpm, and produce ozone at a rate of 600 pounds per day. Our engineers provided a cost analysis of the different alternatives for supplying oxygen for the production of ozone. These alternatives included pure oxygen, air preparation, and onsite cryogenic oxygen production. Pure oxygen delivered to the site was selected as the preferred alternative.
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Solid Waste
Selected Project Experience
Midway Landfill Closure Plan, EIS, RI/FS - City of Seattle Solid Waste Utility
Since 1980, Parametrix has provided ongoing services to the City of Seattle Solid Waste Utility for the Midway Landfill (National Priorities List) - including CERCLA RI/FS, EIS, engineering plans and specifications, groundwater, surface water, and landfill gas control.
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Cedar Hills Regional Landfill Services During Construction - King County
Parametrix was retained in 2001 to provide services during construction for five-years at the Cedar Hills Regional Landfill. There will be $30MM to $40MM in construction projects over this five-year period. Parametrix is providing value and construability reviews of closure and development designs, construction observation and testing, conformance testing of materials, surveying, scheduling, cost estimating and controls, pay requests, submittal review, record drawings, and construction reporting.
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St. John's Landfill Closure Design, Leachate Treatment, and Services During Construction - Portland, OR
Parametrix was selected to prepare plans and specifications for the closure of the 238-acre St. Johns Landfill in Portland, Oregon. The project included the design of a final cover system, surface water management, and a landfill gas collection and permanent gas flare system. Parametrix provided full services during construction and administration of the construction contracts. This included on-site resident construction engineers, inspectors for overall work, as well as membrane liner inspectors and clay cover inspectors, surveying, electrical, and mechanical inspectors. Closure construction commenced in 1991. Parametrix engineers also designed a new treatment and storage facility for hazardous waste solvents generated by the condensate collection system at the St. Johns landfill.
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Port Angles Landfill Engineering Services, Port Angles, WA
Parametrix was retained in 1992 to provide plans, specifications, contract documents, construction quality assurance, cost estimates, and construction services for a five-year, Subtitle D compliant expansion to the existing landfill. In 1998, Parametrix developed plans, specifications, and estimates for the construction of a new landfill cell (Cell 3) to provide disposal capacity through 2006. During 1999 and 2000, Parametrix prepared plans and specifications for the final closure of Cell 1. Today, the firm provides routine on-call solid waste consulting services to assist the City with on-going solid waste operations, landfill gas operations, site-life verification, on-going groundwater monitoring, and compost facility upgrades. Parametrix is assisting the City in developing long-range plans for eventual closure of the landfill and transition to a waste export operation.
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Landfill Monitoring - Marion County, OR
Parametrix is providing Marion County professional services to manage the environmental monitoring permit requirements for two solid waste disposal facilities: the North Marion County Disposal Facility; and the Brown's Island Landfill. Parametrix has completed Environmental Monitoring Plans for both facilities. A Groundwater Quality Assessment Report was completed for the Brown's Island Landfill site requiring the compilation and evaluation of 10 years of groundwater quality data. Parametrix is currently providing ongoing landfill monitoring services for both facilities.
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