Colorado COR400000 site inspection checklist
Routine stormwater inspection of an active construction site, from the entrance to the perimeter to the interior. For the operator's scheduled inspections and for MS4 or county oversight visits.
Based on: CDPHE General Permit COR400000
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Entrance
| Item | Pass | Fail | N/A |
|---|---|---|---|
| Permit coverage posted at the entrance where the public can read it, with the permit or authorization number, a contact, and where to see the SWMP | |||
| SWMP on site, or available as the permit allows, and current | |||
| Streets and sidewalks next to the site free of tracked mud and sediment Photo | |||
| Stabilized construction exits (stone pads, rumble plates, wheel wash) at every exit and maintained Photo |
Perimeter
| Item | Pass | Fail | N/A |
|---|---|---|---|
| Perimeter controls (silt fence, wattles, berms) installed per the SWMP, intact, and not overtopped Photo | |||
| Sediment behind perimeter controls removed before it builds up to half their height | |||
| Buffers to streams, wetlands and other waters kept, or equivalent controls in place | |||
| Velocity dissipation at outlets and along channels; no scour or erosion | |||
| No sediment or other pollutants visibly leaving the site at any discharge point Photo |
Interior
| Item | Pass | Fail | N/A |
|---|---|---|---|
| Storm drain inlets on and next to the site protected, and sediment around them removed Photo | |||
| Soil and material stockpiles covered or contained, and away from inlets and conveyances | |||
| Dust controlled on exposed soil and haul roads | |||
| Disturbed areas where work has stopped stabilized within the permit's deadline; slopes protected | |||
| Sediment basins and traps working, with storage capacity left | |||
| Dewatering water treated before discharge; no turbid water pumped off the site |
Pollution prevention
| Item | Pass | Fail | N/A |
|---|---|---|---|
| Fueling, maintenance and equipment washing areas have spill prevention and containment | |||
| Chemicals and hazardous materials stored with secondary containment and cover | |||
| No spills or leaks; any spill contained and cleaned up Photo | |||
| Trash and construction debris contained, covered and emptied before overflowing | |||
| Portable toilets secured, away from inlets and drainage, and not leaking | |||
| Concrete, stucco and paint washout contained, not leaking, and below capacity Photo |
Records
| Item | Pass | Fail | N/A |
|---|---|---|---|
| Inspections done at the frequency the permit and SWMP set, including the inspections required after storms | |||
| Corrective actions from earlier inspections logged and fixed or scheduled on time | |||
| SWMP site map shows the BMPs as they are installed today | |||
| Areas that are complete but not yet finally stabilized inspected on the reduced schedule the permit allows, and noted in the SWMP | |||
| SWMP updated before or as soon as BMPs change in the field |
Photo A photo is expected with this item.
Skip the clipboard next time. Scan to try this inspection on your phone in the inspectorjay demo: geotagged photos, dictated notes, a pass or fail on every item, and the report emailed to the contractor before you leave the site.
demo.inspectorjay.com/app · inspectorjay.com
This checklist is a starting point. Check each item against your current permit and your agency's standards before relying on it. Based on the CDPHE Water Quality Control Division General Permit COR400000 (renewed 2024) for stormwater discharges associated with construction activities. Colorado calls the SWPPP a Stormwater Management Plan (SWMP). Check each template against the current permit and your local requirements before relying on it.
Know when these checklists change
Permits get renewed and their requirements move. Leave your email and we'll tell you when we update the Colorado checklists or add new ones. A few emails a year at most.
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In inspectorjay, every item gets a pass or fail, a dictated note, and geotagged photos, and the report goes to the contractor before you leave the site.