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BMP Maintenance Schedules: What to Inspect and How Often
An installed BMP that isn't maintained on a real schedule degrades into a liability — maintenance frequency has to match both the regulatory minimum and the BMP's actual condition on the ground.
ISA Certified Arborist (FL-9716A) · Florida Stormwater, Erosion & Sedimentation Control Inspector — FSESCI Qualified Inspector · GI-BMP Certified
The Regulatory Minimum vs. Real-World Conditions
The active NPDES CGP sets minimum inspection frequencies — typically routine periodic inspections plus inspections following qualifying rain events — but a BMP under heavy sediment load may need maintenance attention well before the next scheduled inspection date.
Perimeter Controls
Silt fence and super silt fence should be checked for sediment accumulation, undermining, and tears every routine inspection cycle, with cleanout triggered once sediment reaches roughly one-third to one-half of the barrier height.
Inlet Protection and Sediment Basins
Inlet devices and basin outlet structures need checking for blockage at the same frequency as perimeter controls, since a clogged device can cause localized flooding even though it's technically still in place.
Construction Entrances
Entrances need periodic top-dressing as aggregate becomes embedded into the subgrade — checked visually at each inspection and re-dressed proactively rather than only after sediment tracking becomes visible on adjacent roads.
Documenting the Schedule
A maintenance schedule is only defensible if it's documented — inspection dates, findings, and corrective actions taken, tied back to specific BMPs on a site map or BMP plan sheet.
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Frequently Asked Questions
How often does the NPDES CGP require BMP inspections?
The permit sets minimum routine and post-rain-event inspection frequencies, but a BMP under heavy load may need maintenance attention sooner — the regulatory minimum is a floor, not a substitute for monitoring actual site conditions.
What's the cleanout trigger for silt fence and sediment basins?
For silt fence, cleanout is typically triggered once sediment reaches roughly one-third to one-half of the fence height. Basins should be cleaned out before accumulated sediment meaningfully reduces their design capacity.
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Need erosion control, silt fence, BMP maintenance, or post-rain inspection support? Call 321-467-2188 or request a site assessment from Local Environmental Services.