Or. Admin. R. 690-020-0070

Current through Register Vol. 63, No. 6, June 1, 2024

Section 690-020-0070 - New Dams or to Increase Dam Height: Submittals and Notifications by the Engineer of Record

(1) The Engineer of Record must include an inundation analysis that complies with OAR 690-020-0120 prior to submitting the design report, plans and specifications and other documents, so that the Department can determine the Hazard Rating of the Dam.

(2) All final designs, drawings and specifications submitted to the State Engineer for approval must be prepared and stamped by an Engineer. The first page of the drawings, the specifications, and the construction administration plan must be stamped by the Engineer of Record. All submitted materials must be addressed directly to the State Engineer and labeled as a Dam safety submission.

(3) Final drawings shall be submitted on full size paper. The design reports and specifications must be submitted as packaged 8.5" x 11" bound documents, with maps folded within.

(4) For High Hazard Dams, the final Emergency Action Plan and any additional inundation analysis required for the EAP as described in OAR 690-020-0400 must be submitted by the Dam owner, or the Engineer of Record on behalf of the Dam owner, prior to commencing construction.

(5) A schedule of construction shall be provided to the State Engineer prior to initiating construction of any Significant or High Hazard Dam.

(6) The Engineer of Record shall notify the State Engineer to allow for Department inspection of the excavation prior to completion of the Cutoff Trench and all stripping of Foundation and Embankments. The required notice to the State Engineer is as follows:

(a) 48-hours for a Low Hazard Dam;

(b) 120-hours for a Significant Hazard Dam; and

(c) 240-hours or the time specified in the approval, whichever is longer, for High Hazard Dams.

(7) Any changes made to the designed location, Height or width of the Dam, or to materials used in Dam construction shall be reported in writing immediately to the State Engineer.

(8) Any slope instability observed during construction in the Embankment or adjacent to the Dam or into reservoir, shall immediately be reported to the State Engineer by phone.

(9) The Engineer of Record must immediately notify the State Engineer if they are no longer the Engineer of Record. The notification shall be by phone and in writing.

(10) The Engineer of Record must submit a project completion report upon completion of the Dam. A project completion report must include the following:

(a) As-built Drawings. If possible, As-built Drawings shall be on the same sheet as the initial design drawings;

(b) Sufficient information to document that the Dam has been built according to the drawings with changes to improve safety as documented in the As-built Drawings, or that critical safety functions are unknown;

(c) A list of the dates the Engineer of Record was on site, the number and location of material tests, and observations of all changed conditions;

(d) Material testing results (compaction, strength, permeability);

(e) Observations and decisions made and communicated to the contractor or Dam owner;

(f) Photographs of key stages of construction, including, but not limited to, photographs of the Cutoff Trench, borrow pit development, trenching and placement of the Conduit, the Spillway before and after placement of concrete; and

(g) The signed professional stamp of the Engineer of Record.

Or. Admin. R. 690-020-0070

WRD 2-2015, f. & cert. ef. 3/17/2015; WRD 3-2020, amend filed 06/29/2020, effective 7/1/2020

Statutory/Other Authority: ORS 536.027, 540.488

Statutes/Other Implemented: ORS 540.449, 540.488