Water flowing from a pipe in a frozen landscape

Our boutique firm offers the expertise of a large consultancy with the responsiveness of a focused, collaborative team. Strata’s senior staff have over 100 years of combined experience working on environmental and groundwater projects throughout the Pacific Northwest. We look forward to applying our experience to your project.

  • Cost allocation
  • Data management
  • Environmental assessment
  • Geographic information system (GIS) analysis
  • Groundwater development
  • Groundwater modeling
  • Managed aquifer recharge
  • PFAS response planning
  • Remedial investigation and cleanup
  • Seawater intrusion assessment
  • Solid waste (landfill) monitoring and compliance
  • Stormwater and reclaimed water infiltration
  • Water rights support
  • Watershed assessment
  • Well design, construction oversight, testing, and aquifer properties analysis

Your Trusted Partner for Environmental Consulting & Remediation 

Environmental challenges tied to property transactions, redevelopment, and regulatory compliance, can be complex—and costly. Our team helps you navigate these challenges with confidence, delivering technically sound and cost-effective strategies for cleaning up properties consistent with future land use. Strata develops tailored environmental investigations and cleanup remedies that are commensurate with the challenges and circumstances of each site that protect your investment and minimize risk

 We specialize in: 

  • Environmental Due Diligence 
    Make informed decisions with Phase I and Phase II Environmental Site Assessments (ESAs) that uncover potential risks and liabilities before you buy or sell.
  • Site Characterization & Remedial Investigation 
    Gain a clear picture of your site. We design and execute tailored subsurface investigations to identify contamination in soil, groundwater, surface water, soil gas, indoor air, and sediment—providing actionable insights for planning and compliance.
  • Contaminant Fate & Transport Analysis 
    Understand how contaminants move and change over time. Our analysis evaluates migration pathways and contaminant transformation, helping you plan effective remediation strategies.
  • Data Collection & Statistical Analysis 
    Simplify complex data. We turn technical findings into clear, actionable insights that help to meet your project needs.
  • Feasibility Studies & Remediation 
    From evaluation to implementation, we deliver technically sound and cost-effective cleanup solutions customized for your site’s future use that satisfy regulators and keep your project moving.
  • Regulatory Compliance 
    Navigate environmental regulatory requirements with ease. We are regulatory experts that know how to navigate local, state, and federal regulations including Washington’s Model Toxic Control Act (MTCA) and leverage regulatory oversight alternatives, such as expedited programs and model remedies, for faster site closure.
  • Cost Allocation & Recovery 
    Maximize your investment. We help recover cleanup costs through strategic allocation and cost recovery support with deep experience in MTCA cost recovery and in Superfund Natural Resource Damage (NRD) allocation.
  • Landfill Compliance Monitoring 
    Stay compliant with confidence. Our monitoring and reporting services keep your landfill operations aligned with environmental standards and regulatory requirements.

Why Choose Us? 

Because you deserve a partner who combines technical expertise, regulatory know-how, and practical solutions to deliver results that are cost-effective, compliant, and sustainable. We don’t just solve problems—we help you move forward with confidence. 

Strata’s hydrogeologists have helped clients develop groundwater supplies throughout the Pacific Northwest through local and regional planning, hydrogeologic characterization, the design and testing of numerous exploration and production wells, and regulatory support. Our team supports municipalities, Public Utility Districts, public and private water companies, and a range of industries in finding, accessing, and protecting water resources. We also provide support services for clients and engineering teaming partners with GIS analyses, managed aquifer recharge feasibility assessments, water system plan updates, and wellhead protection programs to help clients make well-informed decisions for their communities.

Strata strives constantly to keep abreast of changing water rights policy and legal issues so we can provide prompt and cost-effective guidance to clients on issues that affect their water rights portfolios. Our clients range from large municipalities to individual private landowners. Our team has expertise both in acquiring new water rights and in transferring and changing existing water rights. We work with our clients to evaluate water right mitigation strategies through our understanding of aquifer hydraulics, regulatory requirements, and our ability to make project-specific groundwater models of appropriate scale and sophistication to meet project needs.