Industrial Stormwater Compliance Flow Chart

Does your business require a WDID, NEC or NONA to comply with California stormwater requirements?

1)           Does your business operate under any of these Standard Industrial Classification (SIC) codes or is included IGP Attachment A?

• Yes – Continue to step 2
• No – Apply for a Notice of Non-Applicability (NONA) identification

2)        Are business operations exposed to stormwater?

• Yes – Continue to step 3
• No – Apply for a No Exposure Certification (NEC) identification number

3)         Apply for a Waste Discharger Identification (WDID)

• Develop a Stormwater Pollution Prevention Plan (SWPPP)
• Submit a Notice of Intent (NOI) via the SMARTS database to apply for a WDID number

4)        Submit your WDID, NEC or NONA number to your city/county to complete the business license application.