When the Director determines that special site conditions may prevent compliance with § 15.20.070, the Director may require additional erosion, sediment and pollutant control measures.
A. Special site conditions may include but are not limited to the following:
1. Slopes before development that are greater than 10% (1 vertical:10 horizontal);
2. Ground disturbance of a natural vegetative buffer within 50 feet of a wetland and/or water body;
3. The development site or development phase will have ground-disturbing activity at any 1 time of 1 acre or more. Single-family dwellings and duplex dwellings are included;
4. The development includes a land division containing 10,000 square feet or more; and
5. Project timing is such that ground- disturbing activity will take place between October 1 and April 30.
B. Additional requirements imposed by the Public Works Supervisor to achieve compliance with § 15.20.080A. may include but are not limited to the following:
1. Requiring drainage control in compliance with city-approved design specs;
2. Requiring that a State of Oregon registered professional engineer, other professional certified by the State of Oregon with experience or qualifications in preparing erosion control plans, or a registered CPESC prepare or implement the erosion and sediment control plan;
3. Prohibiting ground-disturbing activities between October 1 and April 30;
4. Limiting the amount of denuded soil at any given time; and
5. Requiring a bond, letter of credit or other guarantee.
(Ord. 1108, passed 1-8-2003)