Public Jurisdictions
& Public Agencies
Supporting Cities, Counties &
Public Service Providers
ERSM partners with public jurisdictions across Washington & Oregon — including cities, counties, conservation districts, school districts, fire & police departments, parks departments, and other public entities — providing environmental services that support compliance, infrastructure needs, and community priorities.
Stormwater Management & Compliance
ERSM supports public agencies with stormwater management services that protect water quality and meet regulatory requirements.
Stormwater services include:
- SWPPP development support and implementation
- Routine and storm-event SWPPP inspections
- Stormwater inspection reporting and documentation
- BMP inspections and maintenance recommendations
- Construction and municipal stormwater compliance support
- Coordination with regulatory agencies
Stormwater Facility Maintenance Services
ERSM provides comprehensive stormwater facility maintenance to support system performance, regulatory compliance, and long-term infrastructure protection.
Services include:
- Year-round vegetation management
- Year-round inspections
- Inspection reports and documentation
- Regulatory compliance support
Stormwater System Cleaning & Maintenance
- Sewer line jetting and cleaning
- Full facility cleanouts
- Storm drain and catch basin cleaning
- Pond excavation
- Swale re-grading
Facility Repair & Performance Improvements
- Stormwater facility repair
- Erosion control and stabilization
- Water quality testing
Proprietary Stormwater Treatment Systems
ERSM services and maintains a variety of manufactured stormwater treatment systems, including:
- Contech® filters
- BayFilter® systems
- Oldcastle® stormwater filters
Erosion & Sediment Control
We provide field-ready erosion and sediment control solutions for public works, capital improvement, and maintenance projects.
Erosion control services include:
- Erosion and sediment control planning
- BMP installation and field oversight
- Construction site stabilization
- Sediment control for roads, utilities, and facilities
- Corrective action recommendations and follow-up
Invasive & Noxious Weed Management
ERSM helps public agencies manage invasive species on public lands, rights-of-way, and facilities.
Services include:
- Integrated weed management planning
- Targeted treatment and monitoring
- Roadside, trail, and open space weed control
- Right-of-way vegetation management
- Ongoing maintenance programs
Ecological Restoration & Revegetation
Restore disturbed public lands to stable, functional conditions that meet permit and community objectives.
Services include:
- Native seeding and planting
- Riparian, wetland, and shoreline restoration
- Park, trail, and open space rehabilitation
- Post-construction restoration
- Monitoring and compliance reporting
GIS & Mapping Services
Accurate spatial data supports planning, grants, and transparent public reporting.
Services include:
- Public land and facility mapping
- Invasive species and restoration tracking
- Right-of-way and corridor mapping
- Permit exhibits and grant documentation
- As-built and post-project mapping
Environmental Permitting & Compliance
ERSM assists public jurisdictions with environmental review, permitting, and compliance.
Services include:
- Wetland delineations and permit support
- SEPA / NEPA documentation assistance
- ESA compliance and habitat assessments
- Environmental review for public projects
- Agency coordination and reporting
CARING FOR SHARED
SPACES, NATURALLY
