Ohio Admin. Code 3745-56-22 - Action leakage rate
(A) The director will approve an action
leakage rate for surface impoundment units subject to paragraph (C) or (D) of
rule
3745-56-21
of the Administrative Code. The action leakage rate is the maximum design flow
rate that the leak detection system can remove without the fluid head on the
bottom liner exceeding one foot. The action leakage rate must include an
adequate safety margin to allow for uncertainties in the design(e.g., slope,
hydraulic conductivity, thickness of drainage material), construction,
operation, and location of the leak detection system, waste and leachate
characteristics, likelihood and amounts of other sources of liquids in the leak
detection system, and proposed response actions (e.g., the action leakage rate
must consider decreases in the flow capacity of the system over time resulting
from siltation and clogging, rib layover and creep of synthetic components of
the system, overburden pressures, etc.).
(B) To determine if the action leakage rate
has been exceeded, the owner or operator must convert the weekly or monthly
flow rate from the monitoring data obtained under paragraph (D) of rule
3745-56-26
of the Administrative Code to an average daily flow rate(gallons per acre per
day) for each sump. Unless the director approves a different calculation, the
average daily flow rate for each sump must be calculated weekly during the
active life and closure period, and if the unit is closed in accordance with
paragraph (B) of rule
3745-56-28
of the Administrative Code, monthly during the post-closure care period when
monthly monitoring is required under paragraph (D) of rule
3745-56-26
of the Administrative Code.
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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