Corvallis, OR Environmental Rules: Erosion Control (2026)

Chapter 9.03, the City of Corvallis Erosion Prevention and Sediment Control Standards, applies to all ground-disturbing activity in the city, whether or not a permit is required, unless specifically exempted under Section 9.03.030. Section 9.03.080 sets the baseline standard: erosion and sediment release must be minimized to the greatest extent practicable using best management practices and the City's Erosion Prevention & Sediment Control Manual, with the City Manager judging compliance against visible and measurable erosion criteria. Section 9.03.090 requires an EPSC permit before any ground-disturbing activity that affects 2,000 square feet or more cumulatively over the life of a development, and Section 9.03.100 requires an approved Erosion Prevention & Sediment Control Plan before that activity, or installation of any control measures, can begin; grading, public improvement and building permits are withheld until the plan is implemented.

If erosion is already occurring, the responsible party must immediately install interim controls and submit a long-term revision for approval. The City Manager enforces the Standards, can inspect with consent or an administrative warrant, issue stop-work orders halting all work except correction of the violation, and pursue summary abatement of an immediate hazard under Section 9.03.140, billing the property owner for the City's costs. Section 9.03.110(4) sets the default criminal penalty at not less than $100 nor more than $5,000 per offense, with each day of violation a separate offense.

Appeals of technical determinations go to the Hearings Officer, and procedural appeals to the City Council, within 7 days plus 3 for mailing, on a $250 filing fee.