What is the design storm for LID design?
The set of design storms from the current Ventura County Storm Water Quality Urban Impact Mitigation Plan (SQUIMP) is used in the new permit. The new permit uses runoff volume: o 85th percentile 24-hour runoff event using a 48 to 72-hour draw down time, or o Runoff based on unit basin storage volume per 2002 Technical Guidance Manual, or o Runoff from 0.