Section 3702.60 Application for Permit to Construct New Dams or Make Major Modifications to Existing Dams – Contents

Section 3702

Section 3702.60  Application

for Permit to Construct New Dams or Make Major Modifications to Existing Dams –

Contents

Application for a permit shall

be made on forms provided by OWR.  Separate applications are required for each

dam.  The application shall include, as a minimum:

a)         Construction plans and documents, sealed, signed and dated by

an engineer, stating that the dam design and construction documents have been

prepared under the engineer's personal supervision and are in conformance with

this Part.

b)         For all Class I and II dams, and for Class III dams when the

dam height multiplied by the impounding capacity is greater than 300,

computations for structural and geotechnical design of the dam.

c)         Computations for the hydrologic and hydraulic design of the

spillway or combination of the spillway and the outlet works.

d)         For Class I and II dams, computations for the design flood and

the 100-year frequency flood routed through the design spillway system.

e)         For Class I and II dams, computations for the dam breach wave

analysis for downstream impacts.

f)         Computations of length of time required to dewater the

reservoir, together with a detailed plan indicating methods of dewatering for

normal and emergency conditions.

g)         Computations for the design of minimum dam height, including

freeboard.

h)         Sketch showing flood plain land use downstream of the dam.

i)          Computations for the design of the energy dissipating

structures, including an assessment of the impact of the design discharges and

other critical flows in downstream channels immediately below the energy

dissipators.

j)          Time schedule for the construction of the dam (applicant must

notify OWR immediately if any advances in the schedule are made).

k)         Agreement of the applicant to provide as-built plans and

specifications upon completion of construction

n assessment of the impact of the design discharges and

other critical flows in downstream channels immediately below the energy

dissipators.

j)          Time schedule for the construction of the dam (applicant must

notify OWR immediately if any advances in the schedule are made).

k)         Agreement of the applicant to provide as-built plans and

specifications upon completion of construction.  These plans and specifications

shall be signed by the engineer or other qualified personnel who was

responsible for inspection during the construction.

l)          For all Class I and II dams, a detailed plan for inspection

of the dam and its appurtenances during construction, immediately after

completion, at frequent intervals during initial filling of the reservoir, and

for a one-year period immediately following completion of the filling.

Inspections during the initial filling shall be conducted at least every 30

days.  Additional inspections will be required after major storms or seismic

events.  Following a seismic event, OWR will consult with IEMA and university

seismic experts to determine when additional inspections will be required.

m)        For all Class I and II dams, and for Class III dams when the

height multiplied by impounding capacity is greater than 300, authorization for

the OWR, in the event that a dam is found by OWR to be in imminent danger of

failure, to enter upon the dam property if necessary to prevent or alleviate

dam breach damage pursuant to Section 3702.190 and agreement by the applicant

to compensate the State for costs reasonably incurred by emergency action.

n)         Right of access authorization for the OWR to inspect the dam

site and immediate vicinity before, during and after construction and for the

life of the dam and its appurtenances.  OWR shall notify the owner 10 days in

advance of any inspection other than an emergency inspection.

o)         For Class I and II dams, an operational plan

for costs reasonably incurred by emergency action.

n)         Right of access authorization for the OWR to inspect the dam

site and immediate vicinity before, during and after construction and for the

life of the dam and its appurtenances.  OWR shall notify the owner 10 days in

advance of any inspection other than an emergency inspection.

o)         For Class I and II dams, an operational plan.

p)         For all Class I and II dams, and for Class III dams when the

dam height multiplied by the impounding capacity is greater than 300, a

maintenance plan.

q)         For Class I and II dams, a financial responsibility statement.

r)          Copies of ownership documents or flood easement agreements

for all land that will be inundated in the reservoir up to the 100-year

frequency flood pool elevation, or hydraulic computations showing no increase

in the flood pool elevations above existing conditions for floods up to the

100-year frequency flood.