Ohio Admin. Code 3745-56-26 - Monitoring and inspection
(A) During construction and installation,
liners [except in the case of existing portions of surface impoundments exempt
from paragraph (A) of rule
3745-56-21
of the Administrative Code] and cover systems (e.g., membranes, sheets, or
coatings) must be inspected for uniformity, damage, and imperfections (e.g.,
holes, cracks, thin spots, or foreign materials). Immediately after
construction or installation:
(1) Synthetic
liners and covers must be inspected to ensure tight seams and joints and the
absence of tears, punctures, or blisters; and
(2) Soil-based and admixed liners and covers
must be inspected for imperfections including lenses, cracks, channels, root
holes, or other structural non-uniformities that may cause an increase in the
permeability of the liner or cover.
(B) While a surface impoundment is in
operation, it must be inspected weekly and after storms to detect evidence of
any of the following:
(1) Deterioration,
malfunctions, or improper operation of overtopping control systems; and
(2) Sudden drops in the level of
the impoundment's contents; and
(3)
Severe erosion or other signs of deterioration in dikes or other containment
devices.
(C) Prior to
the issuance of a permit, and after any extended period of time (at least six
months) during which the impoundment was not in service, the owner or operator
must obtain a certification from a qualified engineer that the impoundment's
dike, including that portion of any dike which provides freeboard, has
structural integrity. The certification must establish, in particular, that the
dike:
(1) Will withstand the stress of the
pressure exerted by the types and amounts of wastes to be placed in the
impoundment; and
(2) Will not fail
due to scouring or piping, without dependence on any liner system included in
the surface impoundment construction.
(D)
(1) An
owner or operator required to have a leak detection system under paragraph (C)
or (D) of rule
3745-56-21
of the Administrative Code must record the amount of liquids removed from each
leak detection system sump at least once each week during the active life and
closure period.
(2) After the final
cover is installed, the amount of liquids removed from each leak detection
system sump must be recorded at least monthly. If the liquid level in the sump
stays below the pump operating level for two consecutive months, the amount of
liquids in the sumps must be recorded at least quarterly. If the liquid level
in the sump stays below the pump operating level for two consecutive quarters,
the amount of liquids in the sumps must be recorded at least semi-annually. If
at any time during the post-closure care period the pump operating level is
exceeded at units on quarterly or semi-annual recording schedules, the owner or
operator must return to monthly recording of amounts of liquids removed from
each sump until the liquid level again stays below the pump operating level for
two consecutive months.
(3) "Pump
operating level" is a liquid level proposed by the owner or operator and
approved by the director based on pump activation level, sump dimensions, and
level that avoids backup into the drainage layer and minimizes head in the
sump.
Notes
Rule promulgated under: RC 119.03
Rule authorized by: 3734.12
Rule amplifies: RC 3734.12
R.C. 119.032 review dates: Exempt
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