Or. Admin. R. 690-020-0035 – Minimum Engineering Requirements for Final Design of New Dams or to Increase Dam Height

(1) Final documents must be submitted by the Engineer of Record prior to construction to build a new Dam or increase Dam Height as required in OAR 690-020-0080. Design reports may be completed by Engineers other than the Engineer of Record. If multiple reports are submitted, each must be stamped by the Engineer who prepared the report.
(2) Final documents shall include:
1. (a) A plan for construction administration as provided in OAR 690-020-0065;
2. (b) An operations and maintenance plan if required by OAR 690-020-0068;
3. (c) An Emergency Action Plan for Dams rated High Hazard as provided in OAR 690-020-0400;
4. (d) Final design drawings as provided in OAR 690-020-0055; and
5. (e) Final design reports.
(3) The final design report(s) must include the following elements:
1. (a) Site suitability evaluation as provided in OAR 690-020-0036;
2. (b) Hydrology and Inflow Design Flood as provided in OAR 690-020-0037;
3. (c) Dam structure design as applicable and as provided in OAR 690-020-0038–690-020-0041;
4. (d) Spillway design as provided in OAR 690-020-0042;
5. (e) Design for penetrating Conduit(s) as provided in OAR 690-020-0043;
6. (f) Monitoring and instrumentation for determining whether a Dam is operating properly based on the Hazard Rating of the Dam as provided in OAR 690-020-0044; and
7. (g) A Dam Breach Inundation Analysis as provided in OAR 690-020-0120.

ORS 536.027, 540.488

ORS 540.449, 540.488