This is a service / maintenance or supply contract in Chehalis, Washington. Contact the soliciting agency for additional information.

Summary Lewis County Department of Public Works (County) is soliciting Statements of Qualification (SOQs) from qualified consultant firms who wish to be evaluated and considered to provide Countywide Annual Hydrologic, Hydraulic, and Geomorphic Services. The consultant will provide professional services as County projects are scheduled or as circumstances emerge that require expertise in professional hydrologic, hydraulic, and geomorphic services. This will include but is not limited to upcoming Rural Arterial Program (RAP) funded projects, Federal Emergency Management Agency (FEMA) funded projects, U.S. Department of Housing and Urban Development (HUD) funded projects, and Lewis County Transportation Improvement Program (TIP) projects. The agreement(s) will be for two (2) years in duration with an option to extend for an additional year by mutual agreement. If necessary, the agreement may be supplemented for additional time and/or compensation by mutual agreement. The selected CONSULTANT will be expected to enter into a Local Agency A&E Professional Services (Cost Plus Fixed Fee) Consultant Agreement. Lewis County reserves the right to amend the terms of this "Request for Qualifications" (RFQ) to circulate various addenda, or to withdraw the RFQ at any time, regardless of how much time and effort consultants have spent on their responses. Background The County has no scheduled projects requiring hydrologic, hydraulic, and geomorphic services, although we often have emergent projects as flooding occurs. In addition to potential emergency projects, FEMA projects, RCO projects, and possible HUD projects, projects listed in our current Transportation Improvement Program (TIP) that may require hydrologic, hydraulic, and geomorphic services will be included in this request. Question Submission Deadline: January 30, 2026, 2:00pm Question Response Deadline: February 3, 2026, 4:30pm Short list for interviews: February 17, 2026 Interviews (Zoom or Teams): February 20, 2026 Scope of Service The selected consultant is to provide Annual Hydrologic, Hydraulic, and Geomorphic Services on public works projects. This may include but is not limited to providing hydrologic analysis, hydraulic analysis, geomorphic analysis, environmental permit assistance, and/or similar work. General Scope of Services: Hydrologic Analysis - perform floodplain studies and hydrologic analysis, evaluate and design structures for stormwater retention, detention and/or treatment, provide analysis of drainage basins using various techniques and computer models to calculate streamflow, delineate subbasin boundaries, develop hydrologic models, and run models to simulate existing condition flows for appropriate sizing of water crossing structures. Hydraulic Analysis - perform hydraulic analysis of bridges, including hydraulic conveyance floodplain impacts, foundation scour analysis, sediment transport analysis using one and two dimensional modeling -- depending on the application. evaluate existing and proposed bridges and culverts, design bank/scour protection, and river retraining structures, evaluate channel improvement effects/impacts of scour/bank protection and river training structures, perform zero rise analysis for proposed projects. Geomorphic Analysis - perform stream investigation and analysis using principles of fluvial geomorphology, perform sediment transport analysis. Environmental Permit Assistance- conduct field inspections to examine the characteristics of creeks, culverts, and surrounding floodplain with respect to hydraulic, erosion, and scour processes, identify reference reaches for water crossing structures and characterize sediment size, estimate channel/floodplain roughness, document lateral and longitudinal erosion, and other relevant information to aid in the assessment and design of water crossing structures, provide conceptual design inputs for water crossing structures, including stream alignment, typical sections, bank full widths, profiles, streambed substrate, bank/channel stabilization elements, and other pertinent information to meet Lewis County, USACE, and WDFW design criteria, prepare plans, reports and maps to assist Lewis County with environmental permit applications, engineering report requirements for maintenance and/or grant funded culvert projects, and pre-project meetings with various regulatory agencies.