What is a SWPPP and who signs the inspection record in South Carolina

A Stormwater Pollution Prevention Plan is a site-specific document required for any South Carolina construction project with NPDES permit coverage. It describes the erosion and sediment controls installed on the site, the inspection schedule and responsible parties, the corrective action procedure if a BMP fails, and the receiving waters and discharge points the site drains to. SCDHEC requires a SWPPP to be prepared before ground disturbance begins and kept on site for the duration of permitted construction activity.

The plan is a living document. When BMPs change, when the site layout changes, or when the inspection record identifies a deficiency, the SWPPP is updated. SCDHEC inspectors check that the SWPPP on site reflects current conditions, not the site as it existed when the permit was first obtained.

Who must sign the inspection record

Under the South Carolina Construction General Permit, inspections must be conducted by a qualified inspector and documented in a written record. SCDHEC interprets qualified inspector to mean someone trained in NPDES stormwater compliance, and in practice that means a CEPSCI (Certified Erosion Prevention and Sediment Control Inspector) or someone working under the direct supervision of one.

The inspector of record signs each inspection entry in the SWPPP log. That signature certifies that the inspector personally reviewed site conditions on the date noted, that the findings recorded reflect what the inspector observed, and that any required corrective action has been identified. The legal significance of the signature matters: if SCDHEC issues a notice of violation or a civil penalty, the inspection record and its signatures are part of the evidentiary record.

What the inspection record must contain

Each inspection entry in the SWPPP log needs the date and time of inspection, weather conditions at the time, the name and certification of the inspector, findings at each BMP location on the site, and any corrective action taken or required. The record must be current through the most recent required inspection: once every seven days during active land disturbance, and within 24 hours of a rainfall event of 0.5 inches or greater.

The most common documentation failures are not physical BMP failures. They are records that are not dated in chronological sequence, rain events that occurred but were not logged within the 24-hour window, entries that describe BMP condition in general terms without identifying specific locations, and records that are signed weeks after the inspection date. Each of these is a permit violation independent of the physical condition of the BMPs on the ground.

What drone documentation provides and what it does not

Aerial documentation from a drone flight produces a GPS-tagged, timestamped photo record of BMP conditions across the site on the date of the flight. Photos are organized by BMP type and location. For a 40-acre site with multiple sediment basins, hundreds of feet of silt fence, and inlet protection at multiple locations, a drone covers the full perimeter and all BMP locations in a single flight.

What drone documentation does not do is sign the inspection record or substitute for the qualified inspector. The drone operator is not the inspector of record. The inspector reviews the aerial documentation, makes the findings at each BMP location based on what the photos show, and signs the inspection entry. The flight documentation goes into the SWPPP as supporting documentation for the inspection; the inspector's signed entry is the record itself.

This is the same relationship as a lab that runs stormwater samples or a survey crew that shoots site elevations. The drone operator provides data the qualified professional uses to make findings. The professional's judgment and signature are what the permit requires.

For SWPPP consultants and qualified inspectors managing multiple sites

The practical value of aerial documentation for CEPSCI inspectors is coverage capacity. A ground inspection on a large or complex site takes two to three hours. A drone covers the same site in 30 to 45 minutes and delivers a complete GPS-tagged photo set within 48 hours, formatted for direct entry into the SWPPP log. For a consultant managing multiple active permitted sites in Greenville, Spartanburg, and Anderson counties simultaneously, aerial documentation as a subcontracted service expands the number of sites that can be covered in a single inspection day. See how drone documentation support for SWPPP consultants works.

FAA Part 107 certified. Insured. Based in Clemson, SC, covering construction sites throughout Upstate South Carolina.