Ill. Admin. Code tit. 35, § 725.402 - Action Leakage Rate
a) The owner or
operator of landfill units subject to Section
725.401(a)
must submit a proposed action leakage rate to the Agency when submitting the
notice required under Section
725.401(b).
Within 60 days after receipt of the notification, the Agency must establish an
action leakage rate, either as proposed by the owner or operator or modified
using the criteria in this Section, or extend the review period for up to 30
days. If no action is taken by the Agency before the original 60 or extended 90
day review periods, the action leakage rate will be approved as proposed by the
owner or operator.
b) The Agency
must approve an action leakage rate for landfill units subject to Section
725.401(a).
The action leakage rate is the maximum design flow rate that the LDS 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, etc.); construction, operation, and location of the LDS; waste and
leachate characteristics, likelihood and amounts of other sources of liquids in
the LDS; 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.).
c) 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 Section
725.404
to an average daily flow rate (gallons per acre per day) for each sump. The
average daily flow rate for each sump must be calculated weekly during the
active life and closure period, and monthly during the post-closure care period
unless the Agency approves a different period under Section
725.404(b).
d) Final Agency determinations pursuant to
this Section are deemed to be permit denials for purposes of appeal to the
Board pursuant to Section 40 of the Environmental Protection Act.
Notes
Amended at 29 Ill. Reg. 6389, effective April 22, 2005
State regulations are updated quarterly; we currently have two versions available. Below is a comparison between our most recent version and the prior quarterly release. More comparison features will be added as we have more versions to compare.
No prior version found.