Stormwater & Commercial Lake Management

Stormwater ponds serve two purposes: flood mitigation and pollutant removal. Both functions degrade over time as sediment accumulates in the forebay, outlet structures clog, and vegetation encroaches on the riser. A well-maintained BMP meets its design intent for 20+ years. A neglected one fails far sooner — often catastrophically during a major storm event.

Annual BMP Inspection Program

Under MS4 (Municipal Separate Storm Sewer System) Phase II requirements, most Kansas City–area communities require annual inspection of privately-owned stormwater BMPs. Our inspections cover:

• Inlet and outlet structure integrity, trash-rack condition, and flow capacity
• Principal spillway, emergency spillway, and riser joint condition
• Embankment condition — seepage, slumping, animal burrows, vegetation
• Forebay sediment depth and 85% sediment-capacity threshold
• Permanent pool water quality indicators (DO, clarity, nuisance vegetation)
• Access road condition and vector control (mosquitoes)

Reports are delivered in a format acceptable to Kansas City, Overland Park, Olathe, Lenexa, and Jackson County stormwater departments.

Corrective Maintenance

• Forebay cleanouts — mechanical or hydraulic sediment removal on a 5 to 10-year cycle.
• Outlet structure rehabilitation — riser repair, anti-seep collar installation, trash-rack replacement.
• Embankment repair — burrow filling, slump regrading, cover crop reseeding.
• Nuisance vegetation management — cattail control around risers, willow/cottonwood removal on embankments.

Regulatory Support

We coordinate with KDHE, MDNR, and the U.S. Army Corps of Engineers on jurisdictional questions; prepare NOI packages for construction general permit coverage; assist with Section 404 permitting; and provide the operation-and-maintenance manuals required under local post-construction stormwater ordinances.

Serving

• HOAs with shared stormwater detention amenities
• Commercial real estate (office parks, retail, medical campuses)
• Industrial facilities under MSGP (Multi-Sector General Permit)
• Public works departments and municipal drainage districts
• Engineering firms needing post-construction inspections