Sprague Wastewater Lift Stations

Sprague Wastewater Lift Stations

The City of Sprague is proposing to refurbish a wastewater lift station and to construct an additional wastewater lift station. The existing lift station is located near First Street, immediately east of State Route 23. The proposed lift station will be installed at the southern end of the city, near South Dayton Street. Plateau was […]

Ellensburg Bull Road Utility Extension

Ellensburg Bull Road Utility Extension

The City of Ellensburg is planning to extend domestic water, sewer, natural gas, power, and telecommunications utilities along Bull Road and Berry Road. RH2 Engineering has retained Plateau Archaeological Investigations, LLC to conduct a cultural resource survey to identify potential archaeological resources and potential historic properties in the Project Area prior to planned ground disturbing […]

Granger Wastewater Facility and Sewer Improvements

Granger Wastewater Facility and Sewer Improvements

Plateau Archaeological Investigations conducted the archaeological monitoring for the Granger Wastewater Facility and Sewer Improvements located within the existing wastewater treatment facility and Hisey Park in Granger, Washington.  In 2011, Plateau completed a cultural resource survey for the wastewater and sewer project, and no cultural resources were identified. The Yakama Tribe requested an archaeological monitor […]

Goldendale Flood Plain Sewer Collection System Improvement Survey

Goldendale Flood Plain Sewer Collection System Improvement Survey

The City of Goldendale is proposing to refurbish the municipal sewer collection system. The majority of the project will replace the existing sewer line in situ with new sewer pipe, but some portions will require new construction. Plateau conducted a culture resource survey in 2013 and identified buried cultural deposits, and this survey was meant […]

Archaeological Monitoring for Goldendale Sewer System Improvements Project

Archaeological Monitoring for Goldendale Sewer System Improvements Project

Plateau was hired for archaeological monitoring of a sewer system improvement project, following a 2013 cultural resources survey. Plateau provided archaeological monitoring for one geotechnical borehole at the proposed lift station.  Archaeological monitoring of the project was performed at the request of Pioneer Surveying and Engineering and the City of Goldendale to insure proper treatment […]

Goldendale Sewer System Improvement Project

Goldendale Sewer System Improvement Project

The City of Goldendale, located in Klickitat County, is proposing to refurbish the municipal sewer collection system.  Anticipated impacts include excavations, compaction of sediments, and other ground disturbing construction activities. The project will be funded through the Washington State Department of Ecology’s Clean Water State Revolving Fund (CWSRF) and the Public Works Trust Fund.  The […]

Burbank/Pasco Sewerline Alternative Alignment Project

Burbank/Pasco Sewerline Alternative Alignment Project

The Port of Walla Walla proposes to construct a sanitary line between the Burbank Business Park, located in Walla Walla County, and the City of Pasco, located in Franklin County. The proposed undertaking includes a sewerline spanning approximately 1.5 miles from a point directly west of S Road 40 E, in Franklin County, to a […]

Dewberry Sewer Emergency Repair Archaeological Monitoring

Dewberry Sewer Emergency Repair Archaeological Monitoring

The City of Omak is planning to replace the approximately 110,000 linear feet of aging concrete pipe that constitutes its sewer collection system. Approximately 95% of the city’s collection system is built with concrete pipe, from 50 to 80 years old, that has surpassed its useful life. The work will be done in five phases […]

The Liberty Lake Water Reclamation Facility Project, Spokane County, Washington

The Liberty Lake Water Reclamation Facility Project, Spokane County, Washington

The Liberty Lake Sewer and Water District is planning upgrades to the municipal water reclamation facility located in the city of Liberty Lake, Spokane County, Washington.  Upgrades to the municipal water reclamation facility will include the construction of a new 90 x 110 foot building that includes a filtration area, a blower and compressor room, […]

Parry’s Acres Sewage System Rehabilitation Project

Parry’s Acres Sewage System Rehabilitation Project

The City of Tonasket is proposing to rehabilitate the sewage system that services approximately 95 residences in Parry’s Acres. The area of potential effect (Project Area) consists of three non-contiguous locations directly west of the Okanogan River. The three parts of the rehabilitation include: 1) The Gravity Sewer Main, 2) The Main Sewage Lift Station, […]

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