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Testimonials
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“We use ERSM for maintenance of all our stormwater facilities, vaults, mitigation areas and natural open space maintenance. With stormwater regulations increasing and storm facilities becoming more and more complex, we need an expert in the field to keep these facilities operating properly. We count on ERSM for all those needs because of their expertise and their commitment to timely service. We won’t use anyone else.”
Joe Keizur, Principal and Director of Association Management & Field Services, Rolling Rock
Serenus HOA Stormwater Maintenance
Locations: Gervais, OR
Project Highlights
Facility Inspections
- Conducted eight routine inspections to ensure stormwater systems operated effectively and met regulatory requirements
- Evaluated inlets, outlets, and outfalls monthly to identify erosion, dumping, or structural issues
- Prepared a comprehensive annual report summarizing facility conditions and infrastructure performance
- Coordinated directly with local jurisdictions to ensure full regulatory compliance on behalf of the HOA
Detention Pond Maintenance
- Performed five maintenance visits focused on stormwater flow, vegetation control, and system integrity
- Mowed pond banks, swales, and access areas to prevent overgrowth and maintain accessibility
- Removed debris from inlets, outlets, and overflow structures to prevent blockages
- Managed invasive and noxious weeds using approved aquatic herbicides or manual removal
- Cleaned trash screens and sediment traps regularly to maintain flow efficiency and long-term system performance
Outcome
Improved stormwater system functionality, reduced flood risk, and maintained compliance with environmental and local regulatory standards.
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“ERSM is an excellent company to partner with for habitat mitigation work. We rely on them regularly for our projects, and they consistently deliver outstanding results. Their team is friendly, professional, and incredibly experienced, making the entire process smooth and efficient. We appreciate their commitment to quality and their expertise in ensuring our projects meet environmental standards. I highly recommend ERSM to anyone in need of reliable habitat services!”
Nicole Harris, Construction Operations Manager, Ginn Group
Four Creeks South Subdivision Wetland and Riparian Habitat Mitigation Project
Locations: Ridgefield, WA
Project Highlights
Site Preparation
- ERSM crews cleared and mowed the site, removed invasive species, and prepared the soil to create optimal conditions for successful restoration
Native Planting & Habitat Enhancement
- Installed more than 2,600 native trees and shrubs throughout wetland and buffer areas to enhance habitat function and improve water quality
- Applied mulch around each plant to promote healthy growth, retain soil moisture, and suppress weeds
Public Education & Protection
- Installed 20 educational signs to protect restored areas and encourage community stewardship of sensitive habitats
Outcome
Enhanced wetland and riparian functions, improved water quality, and established a thriving native plant community that supports long-term ecological resilience.
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“We had a situation where we were short staffed and the invasive and noxious weeds were overwhelming. I knew we had to call in help. Aaron and his team were amazing in helping us out of this situation. Not only were they very timely, the documentation including photos were greatly appreciated. I would highly recommend the ERSM team for any of your invasive and noxious weed needs.”
Jessica Beehner, Facilities, Maintenance, & Grounds Supervisor, Washougal School District
Washougal School District Noxious Weed Maintenance
Locations: Washougal, WA
Project Highlights
Objective
- Reduce and control populations of invasive and noxious weeds to support healthy native plant communities and prevent further spread
Methodology
- Conducted multiple herbicide applications during the growing season, with two targeted sprays in spring using aquatic-approved pesticides
- All herbicide treatments were applied using backpack sprayers by WSDA-certified pesticide applicators to ensure safe and effective control
- Performed manual pulling and bagging of seeding weeds in late July to prevent seed dispersal
- Focused control efforts on Tansy Ragwort and Poison Hemlock, both high-priority invasive species
Outcome
Significantly reduced invasive weed coverage, minimized re-establishment risk, and improved overall site health and ecological balance.
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“I’ve been working with Aaron Gibson for several years on a number of my properties in Clark County, Washington. His company, ERSM, provides exceptional service. Everyone associated with ERSM is knowledgeable and professional. I am especially impressed by how quickly I receive responses for any emails I send. I’ve actually referred ERSM to several of my colleagues and encouraged them to use ERSM. Highly recommended!”
Bob Mulkey, Association Business Manager, AMS
Mariner’s Gale Catch Basin Service
Locations: Portland, OR
Project Highlights
Objective
- Maintain stormwater infrastructure to ensure proper drainage, prevent flooding, and meet local regulatory standards
Catch Basin Cleaning & Repair
- Removed sediment and debris from 28 stormwater catch basins using a vacuum truck to restore full flow capacity
- Disposed of all sediment and debris off-site in accordance with environmental regulations
- Repaired five catch basin tops, welding new supports to ensure safe and functional access
Ongoing Maintenance & Inspection
- Developed a yearly inspection plan to monitor system performance and identify maintenance needs early
- Ensured all maintenance work aligns with HOA standards and local jurisdictional requirements
Outcome
Significantly reduced invasive weed coverage, minimized re-establishment risk, and improved overall site health and ecological balance.
RESTORING THE PLACES NATURE CALLS HOME
