Turnkey Solutions

Facing a stormwater compliance issue alone is disorienting. Gullywasher has designed and implemented hundreds of successful stormwater filtration systems with a keen eye for cost and effectiveness. Our proven solutions, manufacturing capacity, proprietary medias and filters address all compliance issues that your facility is facing. Reach out and talk to one of our experts about how we can help you.

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Turnkey Solutions

You need to comply, but don’t have the resources to make it a reality. Use us! We have 40 plus years of expertise solving stormwater treatment problems. We can provide you with the stormwater treatment system you need. You don’t have to worry about the design, construction, and installation of the system. We will also train your team on how to use and maintain the system or we can do it for you. Schedule a Free site consultation today!

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How We Do It

Determine Scope of Work

We'll inspect your facilities, paying close attention to common problem areas and use that information, along with compliance data, to create a plan, set milestones and deliverables to get you in compliance quickly and without unnecessary expenses.


Gullywasher has created hundreds of stormwater treatment systems across a wide range of industries. We'll address key problem areas and integrate appropriate equipment to suit your facility and pocketbook.

Implement the Solution

We like to get our hands dirty. Once we pin down the right system for your facility, we get to work. We source the materials, bring it down to your facility, install it and make sure it works. We strive for excellence in customer service.

What We Do

Site Walks

A site walk is how we start all of our retrofitting and turnkey operations. We use highly trained staff to survey the areas and collect data to discover problem areas and potential opportunities for facilities to achieve compliance benchmarks.

Feasibility Studies

Feasibility studies help determine the viability of compliance solutions. Use our team of experts and QISP certified engineers for insights into how to achieve compliance, how long it will take and how much it cost.

On-Site Filter Installations

As the industry leader in stormwater, we have technicians to install, maintain and/or replace stormwater treatment systems. Depending on the specifications of the treatment technology, we'll ensure the system is installed and/or built per design specifications.

Proprietary Filter Media

Gullywasher's selection of Biofilter products leverage high grade proprietary blends of media to strip out stormwater contaminants such as metals, BOD, COD, TSS. Our removal rates are the best in the industry because of our organic media is always filter-grade, originally sourced, properly cleaned, sized and suitably blended.

Maintenance Services

We'll keep your facility compliant by using non-structural methods like site surface sweeping, outfall cleanouts and filter maintenance. These maintenance tactics will address pollutants at the source and keep your filtration system running at its best.

Case Studies

Stormwater compliance can be tricky. Gullywasher offers several solutions to control storm water contaminations at your site. Explore our insight, case studies and success stories!

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Portland Postal Distribution Center

It was the Facilities Manager of the Vehicle Maintenance Center of the US Postal Distribution Center who also had the environmental responsibility of achieving stormwater quality compliance for their entire 10-acre site. Being the central distribution for the State of Oregon and SW Washington, hundreds of long-range tractor-trailers, cube vans, cargo trucks, and postal trucks …


Evans Metal Steel Fabrication

It is the final price (sticker shock) that our competition proposed that led the purchasing manager who is also the Environmental, Health & Safety manager to contact Gullywasher to perform a peer review. Evans has 5 outfalls on their site with one 5-acre building, two 1/4-acre buildings, a 5-acre employee parking lot (with materials storage), …


All Metals Processing, Inc

Their environmental manager contacted Gullywasher for a site walk to see how she could utilize our biofilter technology.  Since the site was 3.5 acres – mostly consisting of manufacturing plant space; our initial recommendations were to use two pump n’ treat biofilter processes at the 2 entrances into the complex. Typically with a site this …


Proven to Remove up to 99.7% of Metals

Explore our case study of a major semiconductor manufacturer and review the third-party lab results.

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Reach and Get Started

You have questions, we have answers. Tell us about your business' compliance needs and we'll reach out quickly to talk about our Turnkey Solutions.

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