Ordinance No. 20019 - Laserfiche WebLink

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a. The corridors for underground utility lines shall be 20 feet wide for excavations or pipes up to 10 feet below ground surface (bgs), 30 feet wide for excavations or pipes from 10 to 15 feet bgs, and 40 feet wide for excavations or pipes deeper than 15 feet bgs. Where two utility lines are cl~se to each other, the corridors for the lines may overlap, but impacts for work on one line are allowed only within the corridor width for that line, not the combined width of both lines. b. The corridors for above ground utility lines shall be 10 feet wide for single pole structures and 20 feet wide for double pole ("H-style") structures. c. The utility corridors shall be centered on an existing utility line, extending an equal distance (half the allowed width) on both sides, except for corridors for new utility lines, which shall be located as specified in subsection d below. d. Construction of new utility lines and new connections to existing utility lines within wetlands designated for protection shall require an amendment of this plan to change the designation from "protect" to "utility line corridor." Such amendments will only be allowed where it is demonstrated that: 1) an alternatives analysis has concluded that locating the new utility line within a protected wetland is the best alternative. The alternatives analysis shall compare alternatives that are completely outside of protected wetlands and compare them to any alternatives that impact protected wetlands. The alternatives shall be evaluated by weighing engineering requirements and total environmental impacts including impacts to threatened and endangered species and their habitat, and to wetlands designated in the Plan for restoration or protection. 2) the new construction cannot reasonably be constructed completely outside of wetlands designated for protection as demonstrated in the above- referenced altemati~es analysis; 3) the utility lines are located so as to reduce the impact to wetlands designated for protection as much as possible, and in no case shall a cumulative area greater than 1 acre be re-designated from "protection" to "utility corridor" for a new utility line; 4) unavoidable impacts will be mitigated through restoration of the project's entire impact area; 5) there are no impacts to wetlands from new utility lines installed within the Willow Creek Natural Area; and 6) impacts to plant and animal species on lists 1 and 2 of the Oregon Natural Heritage Program will not occur.