Projects

Groundwater Basin Boundary Modification

GSI assisted Castaic Lake Water Agency (CLWA) staff with developing technical information to support the submittal of basin boundary modifications for two groundwater basins within its service area. These changes ...

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Marine Facility Remedial Investigation and Feasibility Study

GSI and Maul Foster Alongi (MFA) conducted a remedial investigation and feasibility study (RI/FS) at an active marine shipyard near the mouth of the Columbia River. The effort required close ...

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North Santiam Drought Contingency Planning

GSI is helping to develop a drought contingency plan for the North Santiam River Watershed. This effort will help local stakeholders assess drought vulnerability and build resiliency to future droughts. Background Drought contingency ...

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Water Conservation Strategy

GSI helped the Port of Portland develop a Water Conservation Strategy that integrated water conservation into the Port’s daily operations, business planning activities, maintenance work, and capital improvement projects Background Water conservation is essential to ...

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Woodland ASR Well Design and Installation

GSI is helping the City of Woodland, California, develop its aquifer storage and recovery (ASR) system. Background The City wants to convert its primary potable water supply source from groundwater to surface water ...

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Innovative Water Supply Planning Tool

GSI and the Columbia Basin Ground Water Management Area (CBGWMA) created a customizable computer-based water supply planning application to help the Cities of Moses Lake and Othello, Washington understand, assess, and ...

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Spokane Valley-Rathdrum Prairie Aquifer Study

The Spokane Aquifer Joint Board (SAJB) works cooperatively on groundwater quality protection and aquifer resource management issues, and were interested in understanding whether changes in pumping operations could benefit the river. ...

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Drinking Water Supply Well Rehabilitation

GSI helped the City of Fairview rehabilitate one of its wells, and then developed a comprehensive and innovative preventative maintenance plan to help keep the well functioning at optimal performance. Background The ...

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Drought Contingency Planning

GSI helped Klamath Basin stakeholders develop tools, strategies, and a drought contingency plan that guide water users during drought conditions. Background GSI worked with David Evans & Associates to develop a drought contingency plan for ...

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Land Application Monitoring Program

GSI helped the Port of Morrow develop a better understanding of the geologic and aquifer characteristics underlying the Port’s facilities. GSI continues to ensure that the Port’s sustainable and cost-effective land ...

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ASR for Agriculture

GSI is helping two farmers in a critical groundwater area use aquifer storage and recovery (ASR) to meet their irrigation needs. Background Madison Ranches, Inc., and McCarty Ranch are two large-scale agricultural operations that produce corn, ...

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Landfill Environmental Compliance Support

GSI staff have been providing environmental compliance support for this clients since the mid-1990s. Support has been related to the Resource Conservation and Recovery Act (RCRA) required environmental monitoring and groundwater quality protection ...

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Former Locomotive Site Groundwater Remediation

GSI staff conducted a remedial investigation and implemented remedial actions at a former locomotive maintenance site that was contaminated with chlorinated solvents. Background Weyerhaeuser is a wood fiber company that owns property near Klamath Falls. The site used to be ...

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Stormwater Pollution Prevention Program Support

GSI assisted the City of Gresham with identifying and conducting inspections of 27 automotive-related businesses (ARB) to identify activities likely to pollute stormwater. Using the information gathered from the inspections, GSI assisted ...

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McCormick & Baxter Superfund Site

GSI, working with Hart Crowser and the Oregon Department of Environmental Quality, managed all technical elements of the McCormick & Baxter Superfund Site cleanup project. GSI continues to work post-remedy to manage ...

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Thermal ASR Pilot Testing

As the first project of its kind, Boise White Paper needed a team that understood the regional hydrology and hydrogeology and was extremely familiar with the concepts of ASR. As ...

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Source Water Protection

GSI helped the City of Florence collect information and develop a source water protection plan in order to protect the City’s drinking water source as well as habitat in the Siuslaw River ...

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Municipal Water Management and Conservation Plans

GSI’s water resource consultants have assisted numerous cities and other water suppliers in preparing water management and conservation plans (WMCP), addressing OWRD comments, obtaining approval of final plans, and reporting. ...

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Landfill Leachate Management Program

GSI staff assisted our client in developing and monitoring a leachate management program that uses hybrid poplar tree plantation to naturally treat the leachate. Background The Riverbend Landfill, located near McMinneville, Oregon, generates hundreds of ...

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Wellhead Protection Strategies

GSI staff developed a three-dimensional numerical groundwater flow model to aid multiple water providers in developing their wellhead protection strategies and the long-term capacity of their groundwater sources. Background The Portland Water ...

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ASR Well Rehabilitation

The City of Tualatin enlisted GSI’s expertise to determine if they could use aquifer storage and recovery (ASR) as a drinking water supply source. During initial pilot testing, the well experienced plugging ...

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Water Rights Acquistion Strategy

GSI’s team of hydrogeologist and water rights consultants helped the Eugene Water and Electric Board (EWEB) develop a water rights strategy for a groundwater permit that had previously been denied by the Oregon Water Resources ...

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Rockwood Water PUD Well Design

Although there was limited hydrogeologic information of the area, GSI’s knowledge of the aquifer in the area allowed us to help the District develop a flexible drilling program, well design and installation of drinking ...

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Basinwide Groundwater Management

GSI’s team supported the Columbia Basin Ground Water Management Area (CBGWMA) efforts to conduct a multi-phased, basin-wide groundwater management project. Using our extensive knowledge of regional and local hydrogeology, GSI collaborated with local stakeholders to ...

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Riverbank Filtration and Collector Wells

The City of Boardman obtains drinking water via a collector well, which uses the natural processes in the riverbank to filter water. GSI helped the City design and construct its ...

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Groundwater Bioremediation and Bioaugmentation

Using an innovative biological-based cleanup method (bioremediation), GSI is working to clean up soil and groundwater on three sites that were contaminated with dissolved chlorinated solvents. Background Remediation at the three sites was necessary ...

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Portland Harbor Superfund Site

GSI has assisted the City of Portland in developing its project approaches, regulatory strategy, and source control strategies for the Portland Harbor Superfund Site. Background In Portland, Oregon there is an 11-mile long ...

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Water Rights Consultant of Record

GSI has helped the City of Bend secure and maximize its water rights since 2007. Background GSI has provided comprehensive water resource managment and water rights consulting services to the City of ...

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Shallow Aquifer Recharge

GSI’s team worked with stakeholders to develop shallow aquifer recharge (AR) as a sustainable and innovative water resource tool to restore diminished aquifer levels and stream baseflows which benefits both fish, ...

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Underground Injection Control Protectiveness Demonstration

GSI worked with the City of Portland to develop an innovative regional risk-based decision making tool to aid in conducting a groundwater protectiveness demonstration for its 9,000 underground injection control (UIC) facilities. Background The City of Portland ...

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Municipal ASR Program

The City of Beaverton has one of the most successful municipal ASR (aquifer storage and recovery) programs in Oregon and uses it to supply about 25 percent of its summer peak ...

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