When state water board officials conduct unannounced audits on construction sites, they aren’t just checking if you have a Stormwater Pollution Prevention Plan (SWPPP) on paper—they are looking at physical execution.
Even minor field oversights can lead to formal notices of violation or heavy penalties. Here are three of the most common physical deficiencies our QSP field inspectors encounter, along with practical tips to keep your site fully compliant:
1. Damaged or Improperly Installed Perimeter Controls
Silt fences and fiber rolls (straw wattles) are your first line of defense against sediment runoff, but they frequently fail due to improper trenching or heavy vehicle traffic.
- The Fix: Ensure fiber rolls are trenched into the soil (at least 2–4 inches deep) and securely staked down. Check high-traffic entrance points daily for crushed or torn rolls.
2. Uncovered Material Stockpiles
Soil, concrete, and construction material piles left exposed during dry spells can easily wash away during sudden precipitation events.
- The Fix: All active and inactive soil stockpiles must be completely covered with plastic sheeting or geotextile tarps and ringed with sediment barriers prior to any predicted storm event.
3. Inadequate Concrete Washout Facilities
Washing out concrete trucks directly onto bare dirt or into storm drains is a major violation that damages soil and water pH levels.
- The Fix: Construct dedicated, leak-proof washout pits or use portable prefabricated washout containers. Ensure clear signage directs drivers to the washout zone.