(A) For class I and II levees and for
dams, the preliminary design report shall include:
(1) A general description
of the dam or levee and all appurtenances thereto, and the proposed
classification of the structure as set forth in rule 1501:21-13-01 or
1501:21-13-09 of the Administrative Code. The description is to include a
statement of the purpose for which the dam or levee is to be used, and a
statement setting forth the impact of such dam or levee as it relates to
endangering human life, health, or property upstream, downstream or adjacent to
the dam or levee.
(2) For dams, maps
showing:
(a) The ownership of all property, in whole or in part, that
would be inundated by the reservoir up to and including the elevation of the
top of the dam and the ownership of the property upon which the dam is
located;
(b) The location of the proposed structure; the county, township,
and section lines;
(c) The outline of the reservoir at its primary spillway
elevation and its maximum pool;
(d) Topographic contours of the lake area up through the top of
dam elevation to verify storage volumes;
(e) The locations of state, county, and township roads; the
locations of utilities, i.e., pipe, transmission, and telephone
lines;
(f) The location and elevation of any other structure or facility
affected by the proposed dam or levee.
State, county, and U.S.G.S. maps, and aerial
photographs may be accepted for these purposes
(3) For levees, maps
showing:
(a) The ownership of all property, in whole or in part, that
would be protected and the ownership of the property upon which the levee is
located;
(b) The location of the proposed structure; the county, township,
and section lines;
(c) The locations of state, county, and township roads; the
locations of utilities, i.e., pipe, transmission, and telephone
lines;
(d) The location of any other structure or facility affected by
the proposed levee; and,
(e) Basement and first floor elevations of all structures
potentially affected by the levee as deemed necessary by the
chief.
State, county, and U.S.G.S. maps, and aerial
photographs may be accepted for these purposes.
(4) A written report of
the surficial conditions, i.e., geology, topography, and cultural features,
which includes a field reconnaissance by the applicant's engineer. Logs of
borings in the foundation and in the borrow areas, and results of seismic and
resistivity subsurface investigations, when they are readily
available.
(5) Typical
cross-sections of the dam or levee accurately showing proposed elevations,
slopes, pool levels, and top width.
(6) Preliminary design
assumptions, tentative conclusions, and references. The design assumptions are
to pertain to such hydrologic and hydraulic parameters as drainage area,
rainfall and runoff data, inflow hydrographs, area-capacity-elevation data, and
flood routings, in addition to geologic and geotechnical engineering
assumptions.
(7) A description of how
the streamflow will be diverted around or through the dam site, or otherwise
kept from interfering with the work;
(8) Other pertinent information as may be
needed by the chief.
(B) For proposed class III levees, the
preliminary design report is to include a letter from the owner stating the
purpose and proposed height of the levee, a map showing the location of the
levee, a map showing the ownership of all property, in whole or in part, that
would be protected, and certification that the levee will be consistent and in
accordance with all applicable state and local floodplain regulations
.
(C) Within forty-five days from the date
of receipt of the complete preliminary design report, the chief will respond in
writing with approval, conditional approval, or disapproval of said report.
Upon approval, the chief will designate the approved classification of the
proposed structure. If the proposed structure is placed in class IV pursuant to
rule 1501:21-13-01 or in class III pursuant to rule 1501:21-13-09 of the
Administrative Code, the chief will notify the applicant that the proposed
structure is exempt from the legal provisions of a construction permit (rule
1501:21-19-01 of the Administrative Code).