Maintenance & Compliance

One of the greatest challenges facing municipalities with Municipal Separate Storm Sewer System (MS4) permits is getting the public to care about stormwater. Residents rarely think about catch basins, roadside ditches, detention ponds, or illicit discharges until flooding occurs or a nearby stream b…

One of the greatest challenges facing municipal stormwater programs is finding meaningful ways to engage residents in protecting local waterways. Public education campaigns are important, but brochures, websites, and social media posts often struggle to create lasting behavioral change. People are f…

The Municipal Separate Storm Sewer System (MS4) program is one of the cornerstones of stormwater regulation in the United States. Established under the federal Clean Water Act and administered through the National Pollutant Discharge Elimination System (NPDES), the MS4 program requires municipalitie…

Street sweeping rarely gets much attention. It is slow, repetitive work, often done in the early morning hours, and the equipment itself can be temperamental and expensive to maintain. Sweepers are subject to constant wear, from abrasive debris, dust, and the mechanical strain of brushes, conveyors,…

Closed-circuit television, or CCTV, drainage inspection has become one of the most effective tools available to municipalities for understanding the true condition of their buried stormwater infrastructure. Unlike surface inspections, which can only reveal limited information, CCTV inspections provi…

Municipal Separate Storm Sewer System, or MS4, compliance is built on documentation. Whether you are demonstrating outfall inspections, tracking illicit discharge investigations, or verifying maintenance activities, a well-organized photo-log can be one of the most effective and defensible tools in …

Infiltration-based best management practices, or BMPs, are designed to capture, store, and gradually infiltrate stormwater into the ground. These systems, which include bioretention basins, infiltration trenches, dry wells, and porous pavement systems, are particularly vulnerable during and immediat…

Culverts are often out of sight and, as a result, out of mind, until they fail. When they do fail, the consequences can range from nuisance flooding to full roadway washouts. One of the most overlooked factors in culvert performance is vegetation management. Too little control can obstruct flow and …

Culverts are among the most overlooked pieces of municipal infrastructure, yet they play a critical role in keeping roads passable and communities safe from flooding. When a culvert fails, the results can be immediate and costly: road washouts, property damage, and emergency closures. That is why re…

When a culvert begins to corrode, crack, or separate at the joints, engineers and highway departments often face a choice between excavating the old pipe and installing a new one or rehabilitating the existing structure in place. Slip-lining is the most widely used trenchless rehabilitation techniqu…

(In the photo above, the silt fence has been improperly installed, as you can see it was placed in loose, already excavated, soil.) Why Construction Runoff Matters A single acre of bare earth can release 10 - 20 times more sediment than the same acre in cropland, and up to 2,000 times more than a fo…

Why this matters Every MS4 audit, whether it’s a quick screening or a multi-day deep dive, starts with one question: “Show me the records.” Communities that can put the right document on the table (or screen) in seconds walk away with clean reports and lower stress; those that scra…