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In accordance with the procedures in $ 12.35, the project works of each development to which this subpart applies, excluding transmission and transformation facilities and generating equipment, must be periodically inspected and evaluated by or under the responsibility and direction of at least one independent consultant, who may be a member of a consulting firm, to identify any actual or potential deficiencies, whether in the condition of those project works or in the quality or adequacy of project maintenance, surveillance, or methods of operation, that might endanger public safety.

(a) Independent consultant means any person who:

(1) Is a licensed professional engineer;

(2) Has at least 10 years experience and expertise in dam design and construction and in the investigation of the safety of existing dams; and

(3) Is not, and has not been within two years before being retained to perform an inspection under this subpart, an employee of the licensee or its affiliates or an agent acting on behalf of the licensee or its affiliates.

(b) Dam that has a high hazard potential means any dam whose failure, in the judgment of the Commission or its authorized representative, might endanger human life or cause significant property damage, or which meets the criteria for high hazard potential as defined by the Corps of Engineers in 33 CFR part 222.

(c) Height above streambed means:

(1) For a dam with a spillway, the vertical distance from the lowest elevation of the natural streambed at the downstream toe of the dam to the maximum water storage elevation possible without any discharge from the spillway. The maximum water storage elevation is:

(1) For gated spillways, the elevation of the tops of the gates;

(11) For ungated spillways, the elevation of the spillway crest or the top of any flashboards, whichever is higher;

(2) For a dam without a spillway, the vertical distance from the lowest elevation of the natural streambed at the downstream tow of the dam to the lowest point on the crest of the dam.

(d) Gross storage capacity means the maximum possible volume of water impounded by a dam with zero spill, that is, without the discharge of water over the dam or a spillway.

(e) The Director of the Office of Hydropower Licensing may, for good cause shown, grant a waiver of the 10 year requirement in paragraph (a)(2) of this section. Any petition for waiver under this paragraph must be filed in accordance with $1.7(b) of this chapter.

$ 12.33 Exemption.

(a) Upon written request from the licensee, the Director of the Office of Hydropower Licensing may grant an exemption from the requirements of this subpart in extraordinary circumstances that clearly establish good cause for exemption.

(b) Good cause for exemption may include the finding that the development in question has no dam except dams that meet the criteria for low hazard potential as defined by the Corps of Engineers in 33 CFR part 222.

[Order 122, 46 FR 9036, Jan. 28, 1981, as amended at 49 FR 29370, July 20, 1984)

§ 12.34 Approval of independent con

sultant.

At least 60 days before the initiation of an inspection under this subpart, the licensee must submit to the Director of the Office of Hydropower Licensing for approval, with a copy to the Regional Engineer, a detailed resume that (a) describes the experience of the independent consultant; and, (b) shows that the consultant is an independent consultant as defined in $12.31(a).

(Order 122, 46 FR 9036, Jan. 28, 1981, as amended at 49 FR 29370, July 20, 1984)

$ 12.35 Specific inspection require

ments.

[Order 122, 46 FR 9036, Jan. 28, 1981, as amended at 49 FR 29370, July 20, 1984)

(a) Scope of inspection. The inspection by the independent consultant shall include:

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(1) Due consideration of all relevant reports on the safety of the development made by or written under the direction of Federal or state agencies, submitted under Commission regulations, or made by other consultants;

(2) Physical field inspection of the project works and review and assessment of all relevant data concerning:

(1) Settlement;
(ii) Movement;
(iii) Erosion;
(iv) Seepage;
(v) Leakage;
(vi) Cracking;
(vii) Deterioration;
(viii) Seismicity;

(1x) Internal stress and hydrostatic pressures in project structures or their foundations or abutments;

(x) The functioning of foundation drains and relief wells;

(xi) The stability of critical slopes adjacent to a reservoir or project works; and

(xii) Regional and site geological conditions; and

(3) Specific evaluation of:
(i) The adequacy of spillways;

(ii) The effects of overtopping of nonoverflow structures;

(iii) The structural adequacy and stability of structures under all credible loading conditions;

(iv) The relevant hydrological data accumulated since the project was constructed or last inspected under this subpart;

(v) The history of the performance of the project works through analysis of data from monitoring instruments; and

(vi) The quality and adequacy of maintenance, surveillance, and methods of project operations for the protection of public safety.

(b) Evaluation of spillway adequacy. The adequacy of any spillway must be evaluated by considering hazard potential which would result from failure of the project works during flood flows.

(1) If structural failure would present a hazard to human life or cause significant property damage, the independent consultant must evaluate the ability of project works to withstand the loading or overtopping which may occur from a flood up to the probable maximum flood or the capacity of spillways to prevent the reservoir from rising to an

$ 12.37 Report of the independent con

sultant (a) General requirement. Following inspection of a project development as required under this subpart, the independent consultant must prepare a report and the licensee must file three copies of that report with the Regional Engineer. The report must conform to the provisions of this section and be satisfactory to the authorized Commission representative.

(b) General information in the initial report. (1) The initial report filed under this subpart for any project development must contain:

(i) A description of the project development;

(ii) A map of the region indicating the location of the project development;

(iii) Plans, elevations, and sections of the principal project works;

(iv) A summary of the design assumptions, design analyses, spillway design flood, and the factors of safety used to evaluate the structural adequacy and stability of the project works; and

(v) A summary of the geological conditions that may affect the safety of the project works.

(2) To the extent that the informa- (iii) Analyze the adequacy of existing tion and analyses required in para- monitoring instruments, periodic obgraph (b)(1) of this section, are con- servation programs, and other methods tained in a report of an independent of monitoring project works and condiconsultant prepared and filed in com- tions effecting the safety of the project pliance with Commission regulations or project works with respect to the dein effect before March 1, 1981 the infor- velopment. mation and analyses may be incor- (3) Incorporation by reference. To the porated by specific reference into the extent that conditions, assumptions, first report prepared and filed under and available information have not this subpart.

changed since the last previous report (c) Information required for all reports. by an independent consultant under Any report of an independent consult- this subpart, the analyses required ant filed under this subpart must con- under paragraphs (c)(2)(i) and (ii) of tain the information specified in this this section may be incorporated by paragraph.

specific reference to the last previous (1) Monitoring information. The report report. must contain monitoring information (4) Recommendations. Based on the that includes time-versus-reading independent consultant's field observagraphs depicting data compiled from tions and evaluations of the project any existing critical or representative works and the maintenance, surveilmonitoring instruments that measure lance, and methods of operation of the the behavior, movement, deflection, or development, the report must contain loading of project works or from which the independent consultant's recthe stability, performance, or function- ommendations on: ing of the structures may be deter- (1) Any corrective measures necmined.

essary for the structures or for the (1) Any monitoring data plotted on maintance or surveillance procedures graphs must be presented in a manner or methods of operation of the project that will facilitate identification and works; analysis of trends. The data may be (ii) A reasonable time to carry out summarized to facilitate graphical rep- each corrective measure; and resentation.

(iii) Any new or additional monitor(ii) Plan and sectional drawings of ing instruments, periodic observations, project structures sufficient to show or other methods of monitoring project the location of all critical or represent- works or conditions that may be reative existing monitoring instruments quired. must be included. If these drawings (5) Dissenting views. If the inspection have been included in a previous report and report were conducted and preprepared and filed by an independent pared by more than one independent consultant, they may be incorporated consultant, the report must clearly inby specific reference to that earlier re

dicate any dissenting views concerning port.

the analyses or recommendations of (2) Analyses. The report must:

the report that might be held by any (i) Analyze the safety of the project individual consultant. works and the maintenance and meth- (6) List of participants. The report ods of operation of the development must identify all professional personfully in light of the independent con- nel who have participated in the insultant's reviews, field inspections, as- spection of the project or in preparasessments, and evaluations described in tion of the report and the independent $ 12.35;

consultant who directed those activi(ii) Identify any changes in the infor- ties. mation and analyses required by para- (7) Statement of independence. The graph (b) of this section that have oc- independent consultant must declare curred since the last report by an inde- that all conclusions and recommendapendent consultant under this subpart tions in the report are made independand analyze the implications of those ently of the licensee, its employees, changes; and

and its representatives.

(8) Signature. The report must be signed by each independent consultant responsible for the report.

development, except that the first report filed under this subpart for that development after March 1, 1981 must contain the information and analyses required by $12.37(b).

(c) Extension of time. For good cause shown, the Regional Engineer may ex tend the time for filing an independent consultant's report under this subpart.

measures

8 12.38 Time for inspections and re

ports. (a) General rule. After the initial inspection and report under this subpart for a project development, a new inspection under this subpart must be completed and the report on it filed not later than five years from the date the last report on an inspection was to be filed under this subpart.

(b) Initial inspection and report. (1) For any development that has a dam that is more than 32.8 feet (10 meters) in height above streambed or impounds an impoundment with a gross storage capacity of more than 2,000 acre feet (2.5 million cubic meters), which development was constructed before the date of issuance of the order licensing or amending a license to include that development, the initial inspection under this subpart must be completed and the report on it filed not later than two years after the date of issuance of the order licensing the development or amending the license to include the development.

(2) For any development that was constructed after the date of issuance of the order licensing or amending a license to include the development, the initial inspection under this subpart must be completed and the report on it filed not later than five years from the date of first commercial operation, or the date on which the impoundment first reaches its normal maximum surface elevation, whichever occurs first.

(3) For any development not set forth in either subparagraph (b)(1) or (b)(2), the initial inspection under this subpart must be completed and the report on it filed by a date specified by the Regional Engineer. The filing date must not be more than two years after the date of notification that an inspection and report under this subpart are required.

(4) The last independent consultant's inspection and report made for a development before March 1, 1981 in compliance with the Commission's rules then in effect is deemed to fulfill the requirements for an initial inspection and report under this subpart for that

8 12.39 Taking corrective

after the report. (a) Corrective plan and schedule. (1) Not later than 60 days after the report of the independent consultant is filed with the Regional Engineer, the licensee must submit to the Regional Engineer three copies of a plan and schedule for designing and carrying out any corrective measures that the licensee proposes.

(2) The plan and schedule may include any proposal, including taking no action, that the licensee considers a preferable alternative to any corrective measure recommended in the report of the independent consultant. Any proposed alternative must be accompanied by the licensee's complete justification and detailed analysis and evaluation in support of that alternative.

(b) Carrying out the plan. The licensee must complete all corrective measures in accordance with the plan and schedule submitted to, and approved or modified by, the Regional Engineer.

(C) Extension of time. For good cause shown, the Regional Engineer may extend the time for filing the plan and schedule required by this section.

Subpart E-Other Responsibilities

of Applicant or Licensee

$ 12.40 Quality control programs.

(a) General rule. During any construction, repair, or modification of project works, including any corrective measures taken pursuant to $12.39 of this part, the applicant or licensee must maintain any quality control program that may be required by the Regional Engineer, commensurate with the scope of the work and meeting any requirements or standards set by the Regional Engineer. If a quality control program is required, the construction, repair, or modification may not begin § 12.42 Warning and safety devices.

To the satisfaction of, and within a time specified by, the Regional Engineer, an applicant or licensee must install, operate, and maintain any signs, lights, sirens, barriers, or other safety devices that may reasonably be necessary or desirable to warn the public of fluctuations in flow from the project or otherwise to protect the public in the use of project lands and waters.

until the Regional Engineer has approved the program.

(b) If the construction, repair, or modification work is performed by a construction contractor, quality control inspection must be performed by the licensee, the design engineer, or an independent firm, other than the construction contractor, directly accountable to the licensee. This paragraph is not intended to prohibit additional quality control inspections by the construction contractor, or a firm accountable to the construction contractor, for the construction contractor's purposes.

(c) If the construction, repair, or modification of project works is performed by the applicant's or licensee's own personnel, the applicant or licensee must provide for separation of authority within its organization to make certain that the personnel responsible for quality control inspection are, to the satisfaction of the Regional Engineer or other authorized Commission representative, independent from the personnel who are responsible for the construction, repair or modification.

$ 12.43 Power and communication

lines and gas pipelines. (a) A licensee must take all reasonable precautions, and comply with all reasonable specifications that may be provided by the Regional Engineer, to ensure that any power or communication line or gas pipeline that is located over, under, or in project waters does not obstruct navigation for recreational or commercial purposes or otherwise endanger public safety.

(b) Clearances between any power or communication line constructed after March 1, 1981 and any vessels using project waters must be at least sufficient to conform to any applicable requirements of the National Electrical Safety Code in effect at the time the power or communication line is constructed.

(c) The Regional Engineer may require a licensee or applicant to provide signs at or near power or communication lines to advise the public of the clearances for any power or communication lines located over, under, or in project waters.

§ 12.41 Monitoring instruments.

(a) In designing a project, a licensee must make adequate provision for installing and maintaining appropriate monitoring instrumentation whenever any physical condition that might affect the stability of a project structure has been discovered or is anticipated. The instrumentation must be satisfactory to the Regional Engineer and may include, for example, instruments to monitor movement of joints, foundation or embankment deformation, seismic effects, hydrostatic pore pressures, structural cracking,

or internal stresses on the structure.

(b) If an applicant or licensee discovers any condition affecting the safety of the project or project works during the course of construction or operation, the applicant or licensee must install and maintain any monitoring devices and instruments that may be required by the Regional Engineer or other authorized Commission representative to monitor that condition.

$ 12.44 Testing spillway gates.

(a) General requirement. An applicant or licensee must make adequate provision, to the satisfaction of the Regional Engineer or other authorized Commission representative, to ensure that all spillway gates are operable at all times, particularly during adverse weather conditions.

(b) Annual test. (1) At least once each year, each spillway gate at a project must be operated to spill water, either during regular project operation or on a test basis.

(2) If an applicant or licensee does not operate each spillway gate on a

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