Idaho

Who may prepare a stormwater plan in Idaho

We found no state level preparer credential for Idaho. On what we verified, an operator may adopt the plan without a credentialed signature. Local ordinances can still be stricter.

The answer

None found

We found no state level preparer credential for Idaho. On what we verified, an operator may adopt the plan without a credentialed signature. Local ordinances can still be stricter.

No named or licensed credential is required to prepare the SWPPP. The permit only requires that site inspections be conducted by personnel who completed the EPA construction inspection course and exam, or hold an equivalent current inspection certification, or work under someone who does — an inspection-competency requirement, not a preparation credential. 'Qualified Person' is a self-attested knowledge/skills description, not an exam-based credential. A PE stamp is NOT generally required; the only engineer-specific requirement is narrow and scenario-based (attesting a licensed engineer designed any chemical treatment system the operator elects to use), and does not gate general SWPPP preparation.

Verified2022 Idaho IPDES Construction General Permit (Permit No. IDR100000), Appendix A definition of 'Qualified Person'; Section 6.3 (Training Requirements for Persons Conducting Inspections); Section 7.1-7.2 (SWPPP General Requirements/Contents); Section 9.1.11 (signatory/certification)Source

What this means for a generated plan

On what we verified, an operator may adopt a generated plan here without a credentialed signature. Local ordinances can still impose a stricter gate than state law, so check the county or municipality as well.

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State*

Activity*

Total acres disturbed*

Total land disturbance over the whole project, including staging and access. This decides whether you need a permit at all.

Acres open at any one time

Optional. If you phase the work, the most that will be disturbed at once. Leave blank if the whole site is open together. The stabilisation deadline turns on this figure, not the total.

Part of a larger common plan of development or sale

A half acre lot inside a 40 acre subdivision is covered even though the lot alone is under the threshold. This is the most commonly missed trigger in the permit.

Receiving water and site conditions(optional, but they change the inspection frequency)

Discharges to a sediment or nutrient impaired water

Discharges to a Tier 2, 2.5 or 3 water

Arid, semi arid or drought stricken area

May allow a reduced inspection frequency during the seasonally dry period.

In Indian country

EPA keeps permitting authority in Indian country even inside a state that runs its own programme.

No account, no card, nothing transmitted.

What people ask about preparing a SWPPP in Idaho

Do I need a qualified preparer for a SWPPP in Idaho?

We found no state level preparer credential for Idaho. On what we verified, an operator may adopt the plan without a credentialed signature. Local ordinances can still be stricter.

Does a professional engineer have to stamp the plan in Idaho?

Practice act citations are routinely overstated on this point. A PE stamp is not required as a general matter in most states with no preparer gate, and where we have not verified it we will not assert either answer. Confirm with the state board or the permitting authority.

Which permit governs Idaho SWPPP requirements in Idaho All jurisdictions

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