Who Needs a Stormwater Permit?
Dischargers whose projects disturb one or more acres of soil or whose projects disturb less than one acre but are part of a larger common plan of development that in total disturbs one or more acres are required to obtain coverage under the General Permit for Discharges of Stormwater Associated with Construction Activity
Effective July 1, 2010, all dischargers are required to obtain coverage under the Construction General Permit Order 2009-0009-DWQ
, adopted in September 2009. Construction activities subject to this permit include clearing, grading, and disturbances to the ground such as stockpiling or excavation. This does not include regular maintenance activities performed to restore the original line, grade, or capacity of the facility.
What Does the Stormwater Permit Require?
The Construction General Permit requires the development and implementation of a Storm Water Pollution Prevention Plan (SWPPP). All construction in the City of Richmond must submit a SWPPP for review with the grading plan. View information about the State Construction General Permit
What does the SWPPP require?
The SWPPP should contain:
- A site map that shows the construction site perimeter, existing and proposed buildings, lots, roadways, storm water collection and discharge points, general topography both before and after construction, and drainage patterns across the project
- Best Management Practices (BMPs) the discharger will use to protect storm water runoff, as well as the placement of those BMPs
- A visual monitoring program
- A chemical monitoring program for "non-visible" pollutants to be implemented if there is a failure of BMP
- A sediment monitoring plan if the site discharges directly to a water body listed on the 303(d) list for sediment.
Section A of the Construction General Permit describes the elements that must be contained in a SWPPP. A copy of the SWPPPs need to be kept on site and available to City inspectors upon request.