Oregon

Who may prepare a stormwater plan in Oregon

Oregon requires a credentialed preparer only in some cases. Sites of 20 acres or more.

The answer

Conditional

Oregon requires a credentialed preparer only in some cases. Sites of 20 acres or more.

What triggers it: Sites of 20 acres or more.

Credentials that qualify

CPESC
CPSWQ
Oregon PE
Oregon RLA
CEG
CPESC, CPSWQ, Oregon Registered PE, Oregon Registered Landscape Architect or Oregon Certified Engineering Geologist (conditional: 20 or more acres, certain near-buffer-zone compliance options, or engineered facilities)

Oregon gates only at 20 acres or more, or where engineered facilities are involved. Reconciled against the jurisdiction registry, which found a preparer requirement this entry had missed. Where the two sources disagreed we kept the stricter answer.

VerifiedPermit 1200-C Schedule A.21.e-gSource

What this means for a generated plan

Where a credential applies, or where we cannot confirm that none does, treat a generated document as a complete draft for a credentialed preparer to review, amend and sign. It is not by itself a compliant filed plan, and ours says so on its face.

Screen a Oregon site, credential answer included

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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 Oregon

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

Oregon requires a credentialed preparer only in some cases. Sites of 20 acres or more.

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

A PE stamp is required in Oregon. Trigger: Engineered facilities at any size require an Oregon PE stamp.

Which permit governs Oregon SWPPP requirements in Oregon All jurisdictions

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