Compare Regulations
Compare state-level permit requirements side-by-side (up to 4 states)
ID(3 more)
Rows with an amber indicator differ across selected states.
| Field | ID Idaho |
|---|---|
| NPDES Program | State-Delegated |
| Permitting Agency | Idaho Department of Environmental Quality (IDEQ) |
| Permit Name | NPDES General Permit for Stormwater Discharges Associated with Construction Activity (Permit No. IDG10-000) |
| Construction Threshold | ≥ 1 acre of land disturbance (or < 1 acre if part of a larger common plan of development or sale); disturbing < 1 acre may still require coverage if DEQ determines the site poses a risk to water quality |
| NOI Lead Time | NOI must be submitted to IDEQ at least 2 days before construction begins (48-hour advance notice minimum); permit coverage is effective upon receipt of NOI acknowledgment from IDEQ |
| Application Method | Online via Idaho DEQ's MyDEQ online portal (preferred); paper NOI form also accepted; NOI submitted to IDEQ Boise office |
| Permit Fee | No permit fee required for the NPDES construction general permit in Idaho; IDEQ does not charge an application or annual fee for the IDG10-000 general permit |
| SWPPP Required | Yes |
| PE Certification Required | No |
| SWPPP Template Available | Yes |
| Inspection Frequency | At least every 14 calendar days and within 24 hours after a storm event producing ≥ 0.5 inches of rainfall; inspections must be documented in the SWPPP |
| Inspector Qualification | Inspector must be a member of the permittee's Pollution Prevention Team identified in the SWPPP; no state-specific certification is required, but the inspector must be knowledgeable about the SWPPP and BMPs; CPESC or equivalent professional credential is accepted |
| Post-Construction Required | No |
| Turbidity Standard | No numeric NTU turbidity limit specified in the general permit; narrative standard applies — discharges must not cause or contribute to violations of Idaho's water quality standards |