PROJECTS   ››   Studies


City of Gold Beach, Water Master Plan

In order to provide guidance to address the city of Gold Beach's future water needs, a water master plan was developed to be used for systematic upgrades to the City's water system. Included was a water management and conservation plan. As part of the study, the current water distribution system, demand patterns, and system performance were evaluated with WaterCAD with respect to critical service standards, and emphasis on selected vital or high fire flow areas within the City. As a result, specific projects were recommended for inclusion in the water distribution system Capital Improvement Program, along with financing plans to facilitate successful implementation of recommendations.

While the City has not been required to address water conservation in the past, the City plans to implement 15 separate conservation measures recommended by this study. In addition a water curtailment plan was compiled based on four levels or stages of alert using standard industry indicators.


City of Coquille, Wastewater Facilities Plan

While significant upgrades were made in 1971 to a wastewater system originally built in 1953, many components of the system had reached the end of their design life, resulting in the inability to meet current NPDES limits, particularly with regard to total maximum daily load limitations and disinfection requirements. During winter, hydraulic overload of the plant caused bypassing of untreated waste flows to a nearby river despite a significant number of collection system improvements. Consequently, a comprehensive facilities plan leading to construction of upgraded facilities was developed to provide adequate wastewater infrastructure and build capacity for future growth, while providing compliance with current and anticipated pollution discharge limitations established for the Coquille River. This study was the first step in a process that resulted in a new $6.8 million award-winning facility for the city of Coquille; it was finished in 2013.


City of Brookings, Storm Drainage Master Plan

The city of Brookings experienced several significant storm drain collapses during recent winter storm events, which resulted in overland flooding causing significant damage to both public and personal properties throughout the City. Completing emergency repairs during winter months caused a large expense of funds and resources. Consequently, a storm drainage master plan was researched and written to address the aging and deficient storm drain system.

Research included sending cameras through several key storm drain systems as well as physical inspection. Base maps of the watershed basin study area were developed, and the existing drainage system was incorporated into the maps based on utility knowledge and city staff's knowledge. Additionally, a hydraulic analysis of the area was performed which was then used to build a hydraulic model of the drainage system using computer software. All of this provided a thorough and systematic approach which the City can use to update, improve and repair its storm drain system while allowing an orderly, prioritized budgeting process to fund the improvements.


City of North Bend, Street Utility Studies

The city of North Bend has had a pavement management plan since 1990, and Dyer provided the most recent update, based on street condition surveys. Phase 1 of the project provided an updated plan which assessed the current street inventory, noting conditions and deficiencies. This information was used to develop cost estimates and a planning schedule, and included various pavement rehabilitation methods, cost basis and a capital improvement plan.

Phase 2 of the project was a Street Utility Fund Feasibility Study which considered the merits of instituting a Street Utility Fee program to help fund maintenance and upgrades to the existing street and road system. A number of other Oregon cities have adopted this program to meet the municipal transportation maintenance gap between static sources of funding and increasing costs. The report determined the amount of additional revenue required after existing sources are allocated to fund projects desired by the City. An assessment and billing structure was recommended which meets the revenue requirements for the proposed maintenance and upgrade projects; included was an implementation and administration strategy.


City of Glendale, Wastewater System Improvements: Biological Assessment, Environmental and Geotechnical Report

Environmental Reports are often one of the first steps required prior to performing upgrades or new construction for water and wastewater projects. Dyer has many years of experience with research, information collection and execution of these and other reports, which are frequently required before many new projects begin the design phase.

The city of Glendale, whose most recent improvements to its wastewater treatment system occurred in 1977, has entered into a Mutual Agreement and Order (MAO) with the Oregon Department of Environmental Quality (in 1998) while the City works to resolve compliance issues. As a result, Dyer assisted the City in applying for a grant to improve its wastewater treatment system and assembled an environmental report as one of the first steps for complying with the requirements of that grant. An environmental report addresses potential impacts of improvements called for in a wastewater facilities plan. The report includes a description of improvements made to date, consultation with all stakeholders involved in the project such as government agencies, studies such as smoke testing and video inspection of sewer lines, a biological assessment and a geotechnical report, among various items required. All of these items and others are incorporated into the design of the new wastewater facility.


Dyer has written a wide variety of master plans over many years. Among the most recent are a Storm Drain Master Plan for the city of Brookings, Water and Wastewater Master Plans for the city of Port Orford, a long-term Biosolids Management Plan for the city of Coos Bay, capital improvement plans for a number of cities including Gold Hill, and the Charleston Marina Complex Master Plan in partnership with Shoji Planning & Development of Coos Bay.