Site Manager / Fate & Transport Expert (Environmental Engineer 5)

Site Manager / Fate & Transport Expert (Environmental Engineer 5)

Keeping Washington Clean and Evergreen

The Department of Ecology is hiring a Site Manager / Fate & Transport Expert (Environmental Engineer 5) within the Toxics Cleanup Program (TCP).

Location:

• Headquarters Office in Lacey, WA.
• Upon hire, you must live within a commutable distance from the duty station.

Schedule:

• This position is eligible for telework and flexible schedule options.
• A minimum of one day per week is required in the office.
• You may also need to attend occasional in-person meetings and activities outside of your in-office schedule.
• Schedules are dependent upon position needs and are subject to change.

Application Timeline:

• Apply by May 10, 2026.
• This position will remain open until filled. The agency reserves the right to make a hire at any time after application review begins. Applications received after the date above may not be considered.

Duties

As a Site Manager / Fate & Transport Expert, you'll take on some of Washington's largest and most complex contaminated sites. You'll review remedial investigations, feasibility studies, and cleanup action plans, and you'll guide corrective actions and compliance monitoring that support property development, real estate transactions, and other critical activities across the state.

This role offers the chance to apply deep technical expertise where it truly matters. Your knowledge of chemical fate and transport will directly shape cleanup strategies under the Model Toxics Control Act (MTCA), ensuring sound, defensible decisions. You'll design engineering analyses that evaluate contaminant movement through groundwater, soil, and air, and you'll help identify the most effective cleanup technologies—from in-situ stabilization to soil vapor extraction to permeable reactive barriers. You'll also serve as a technical resource for engineers and site managers, offering clear, thoughtful review and mentorship. And by delivering timely, accurate updates on site status, you'll help keep real estate transactions, loans, and development moving efficiently while maintaining strong environmental protection standards.

Additional duties as a Site Manager will include:

• Manage and oversee the investigation and cleanup of contaminated sites for compliance with regulations.
• Provide assistance and mentoring to other engineers and site managers.
• Negotiate, issue, and enforce Agreed Orders, Consent Decrees, Department Enforcement Orders and Inter-Agency Agreements.
• Review engineering studies and reports on hazardous waste sites to determine relevant and appropriate state-of-the-art field and design practices and compliance with applicable regulations.
• Coordinate the planning, implementation and completion of site-specific projects with remediation technologies.
• Prepare engineering reports; assist project team members in their analysis and understanding of design plans and specifications.
• Evaluate the completeness and accuracy of engineering characterization, remedial investigation, and feasibility studies of contaminated sites.
• Review Remedial Investigation Reports, Site Health and Safety Plans, Engineering and Design Reports, post-cleanup as-built drawings, and soil and groundwater lab reports including quality assurance/quality control (QA/QC) documentation.
• Apply Model Toxics Control Act requirements to contaminated sediment sites cleanups and in alignment with Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) requirements.
• Provide in-field oversight of contract engineering work.

Learn more about what it is like to be an Engineer at the Department of Ecology

Qualifications

For detailed information on how we calculate experience and responses to other frequently asked questions, please visit our Recruitment website.

Required Qualifications:

• Registration as a Professional Engineer in the state of Washington or another state based on registration requirements equivalent to those in Washington AND

• Five years of experience in environmental engineering

Special Requirements/Conditions of Employment:

• Must possess and maintain a valid driver's license.
• Registration as a Professional Engineer in the State of Washington or another state, based on registration requirements equivalent to those in Washington. Applicants qualifying through the licensing equivalency option must achieve professional registration as an engineer in the state of Washington within six months of appointment to this class.

NOTE: Individuals who are licensed as professional engineers in another U.S. jurisdiction or foreign country and wish to apply for this position must qualify for licensure in Washington State by comity. Applicants are responsible for reviewing and ensuring they meet Washington's comity requirements before submitting application materials. Licensing requirements can be found on the Washington State Board of Registration for Professional Engineers and Land Surveyors website: How to Get Your Professional Engineer License When Licensed in Another Jurisdiction.

Supplemental Information

Ecology does not use the E-Verify system; therefore, we are not eligible to extend STEM Optional Practical Training (OPT). For more information, please visit

Our Commitment to DEIR

Diversity, Equity, Inclusion, and Respect (DEIR) are core values central to Ecology's work. We strive to be a workplace where we are esteemed for sharing our authentic identities, while advancing our individual professional goals and collaborating to protect, preserve, and enhance the environment for current and future generations.

Diversity: We celebrate and appreciate diversity; our unique perspectives and abilities enrich us all and lead to innovative approaches and solutions.

Equity: We champion equity, recognizing that each of us need different things to thrive.

Inclusion: We intentionally create and hold space so that we all have meaningful opportunities to participate and contribute to Ecology's work.

Respect: We treat each other with respect and dignity, acknowledging the inherent worth of our diverse perspectives and lived experiences, even in times of uncertainty and disagreement.

We believe that DEIR is both a goal and an action. We are on a journey, honoring our shared humanity and taking steps to demonstrate our commitment to a vision where each of us is heard, seen, and valued.

Application Process

Ecology seeks diverse applicants: We view diversity, equity, inclusion, and respect through a broad lens including race, ethnicity, class, age, religion, sexual orientation, gender identity, immigration status, military background, language, education, life experience, physical disability, neurodiversity, and intersectional identities. Qualified job seekers from all backgrounds are encouraged to apply.

How to Apply

Click "Apply" at the top of this page. Complete the entire application, including full work history and responses to all supplemental questions, and attach the following required documents:

• Cover letter, describing your interest in and qualifications for this position
• Resume

Because we base our selection on the information you provide, it is in your best interest to complete the application thoroughly. A resume will not substitute for the "work experience" section of the application or vice versa. Applications with blank fields or supplemental question responses with comments such as "see resume" may be considered incomplete.

Application Attestation: By submitting an application, you are affirming that the information contained in your application and on all attachments is complete and truthful. The state may verify this information, and any false or misleading answers may result in rejection of your application or dismissal if employed.

Need an Accommodation?

If you need reasonable accommodation during the application and/or screening process, including this job announcement in an alternate format:

• Please contact us at View phone number on click.appcast.io or View email address on click.appcast.io
• If you are deaf or hard of hearing, you may call through the Washington Relay Service by dialing 711 or View phone number on click.appcast.io.

Questions?

• For specific questions about the position location options, schedule, or duties, please contact Amy Hargrove at View email address on click.appcast.io.
• If you need assistance applying for this job, are inquiring about the status of your application, would like to request the full position description, or have any other questions, please contact the Recruitment Team at View email address on click.appcast.io.