Compare Regulations
Compare state-level permit requirements side-by-side (up to 4 states)
HI(3 more)
Rows with an amber indicator differ across selected states.
| Field | HI Hawaii |
|---|---|
| NPDES Program | State-Delegated |
| Permitting Agency | Hawaii Department of Health, Clean Water Branch (DOH-CWB) |
| Permit Name | NPDES General Permit for Stormwater Discharges Associated with Construction Activity (Permit No. HIG960001 / HIR100001) |
| Construction Threshold | ≥ 1 acre of land disturbance (or < 1 acre if part of a larger common plan of development or sale); some activities < 1 acre may require an individual NPDES permit depending on proximity to sensitive waters |
| NOI Lead Time | NOI must be submitted to DOH Clean Water Branch at least 10 days prior to the commencement of construction activity; permit coverage is not effective until the NOI is acknowledged |
| Application Method | Paper NOI submitted to DOH Clean Water Branch, Environmental Management Division; Hawaii does not currently have a statewide online NOI portal for construction stormwater — check DOH CWB for updated submission options |
| Permit Fee | $200 NOI filing fee; additional annual permit compliance fees apply based on acreage (verify current schedule with DOH Clean Water Branch) |
| SWPPP Required | Yes |
| PE Certification Required | Yes |
| SWPPP Template Available | No |
| Inspection Frequency | At least every 14 calendar days during active construction and within 24 hours after a rainfall event producing ≥ 0.5 inches; some site classifications may require more frequent inspections |
| Inspector Qualification | Inspections must be conducted by a qualified individual — defined as someone knowledgeable about the SWPPP and BMP implementation; Hawaii does not currently have a state-specific inspector certification program, but CPESC or equivalent professional credential is accepted |
| Post-Construction Required | Yes |
| Turbidity Standard | No numeric NTU turbidity limit specified in the general permit; narrative standards apply — discharges must not cause or contribute to violations of Hawaii's water quality standards |