Cal. Code Regs. Tit. 22, § 66265.255 - Action Leakage Rates
(a) The owner or operator of waste pile units
subject to section
66265.254 shall submit a proposed
action leakage rate to the Department when submitting the notice required under
section 66265.254. The Department will
establish an action leakage rate, either as proposed by the owner or operator
or modified using the criteria in this section.
(b) The Department shall approve an action
leakage rate for waste pile units subject to section
66265.254. The action leakage rate
is the maximum design flow rate that the leak detection system (LDS) can remove
without the fluid pressure head on the bottom liner exceeding 1 foot (30.5 cm)
at any govern portion of the liner. The action leakage rate shall include an
adequate safety margin to allow for uncertainties in the design (e.g., slope,
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 shall 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
shall convert the weekly flow rate from the monitoring data obtained under
section 66265.260, to an average daily
flow rate (gallons per acre per day) for each sump. Unless the Department
approves a different calculation, the average daily flow rate for each sump
shall be calculated weekly during the active life and closure period.
Notes
2. Change without regulatory effect amending subsection (b) filed 6-30-97 pursuant to section 100, title 1, California Code of Regulations (Register 97, No. 27).
Note: Authority cited: Sections 25150 and 25159, Health and Safety Code; and Governor's Reorganization Plan Number 1 of 1991. Reference: Sections 25159 and 25159.5, Health and Safety Code; and 40 CFR Section 265.255.
2. Change without regulatory effect amending subsection (b) filed 6-30-97 pursuant to section 100, title 1, California Code of Regulations (Register 97, No. 27).
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