Compare Regulations
Compare state-level permit requirements side-by-side (up to 4 states)
AZ(3 more)
Rows with an amber indicator differ across selected states.
| Field | AZ Arizona |
|---|---|
| NPDES Program | State-Delegated |
| Permitting Agency | Arizona Department of Environmental Quality (ADEQ) |
| Permit Name | Arizona Pollutant Discharge Elimination System (AZPDES) Construction General Permit (CGP) — Permit No. AZG2025-001 (effective 2025, expires August 28, 2030) |
| Construction Threshold | ≥ 1 acre of land disturbance, or < 1 acre if part of a larger common plan of development or sale |
| NOI Lead Time | NOI must be submitted and a permit authorization number received before land disturbance begins; ADEQ typically processes NOIs within 5 business days. Existing permittees under AZG2020-001 must submit a new NOI — coverage does not automatically transfer. |
| Application Method | Online via ADEQ's myDEQ portal (azdeq.gov); paper NOI forms also accepted |
| Permit Fee | $500 for sites disturbing ≥ 1 acre and < 5 acres; $750 for ≥ 5 acres; fee is per project |
| SWPPP Required | Yes |
| PE Certification Required | No |
| SWPPP Template Available | Yes |
| Inspection Frequency | At least every 14 calendar days and within 24 hours of a storm event that produces 0.5 inches or more of rainfall at the site; in arid regions, inspection frequency may be adjusted if site conditions warrant |
| Rain Inspection Trigger | Within 24 hours of a storm event producing ≥ 0.5 inches of rainfall in a 24-hour period |
| Inspector Qualification | Inspections must be performed by a trained individual with knowledge of construction stormwater requirements. Arizona does not require a state-specific certification for inspectors. The permittee or a designated representative familiar with the SWPPP may conduct inspections. |
| Inspector Certifications | No state-specific cert required; inspector must be trained and knowledgeable; CPESC, CESSWI, CISEC accepted |
| Post-Construction Required | Yes |
| Turbidity Standard | No numeric NTU limit in the CGP; narrative water quality standard applies |