What is an NOI and what permits does it cover?

An NOI is a “Notice of Intent’ application to be included in one of CA’s General Stormwater Discharge Permits.  If you are a commercial or industrial facility covered by certain NAIC code like chemical manufacturing or vehicle servicing, you may be required to file an NOI for inclusion in CA’s General Permit for Industrial Facilities.  If you disturb soil of more than 1 acre you may be required to file an NOI for inclusion in CA’s General Construction permit.  If you are a point source discharger like an industrial facility you may be required to apply for an individual NPDES permit.  If you are a municipality that owns/maintains an MS4 you may be required to apply for a Municipal Stormwater Discharge NPDES permit.

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1. How do I calculate the Flood Control flow data point? Do I need to know the post development design flows for my project?
2. How do I determine the 25-year 24-hour storm depth
3. What are Pollutants of Concern (POCs)?
4. What are Stormwater Best Management Practices (BMPs)?
5. What is a Watershed?
6. What is an illicit discharge and who do I call to report it?
7. What is an NOI and what permits does it cover?
8. What is C.3?
9. What is NPDES and who oversees it?
10. What is the design storm for my project?
11. What is the difference between a Stormwater Pollution Prevention Plan (SWPPP) and a Stormwater Control Plan (SWCP)?
12. What is the difference between point source and non-point source?
13. What is the difference between the County Watershed Program and the Contra Costa Clean Water Program?
14. What is the difference between the storm drain system and the sanitary sewer?
15. What is the drainage easement across my property? Can I build on it? What can I do on it?
16. Who do I contact if I have flooding on my street?