South Carolina Code of Regulations
Chapter 61 - DEPARTMENT OF HEALTH AND ENVIRONMENTAL CONTROL
Subchapter 61-107 - Solid Waste Management
Subchapter 61-107.19 - SOLID WASTE. MANAGEMENT: SOLID WASTE LANDFILLS AND STRUCTURAL FILL
Part V - CLASS THREE LANDFILLS. (SUBSections A THROUGH F OF THIS PART ARE CODIFIED TO COINCIDE WITH THOSE SUBPARTS IN 40CFR258.)
Subpart C - OPERATING CRITERIA
Section 61-107.19.V.C.258.23 - Explosive Gases Control
Universal Citation: SC Code Regs 61-107.19.V.C.258.23
Current through Register Vol. 48, No. 9, September 27, 2024
a. Owners/operators of all Class Three landfills shall ensure that:
(1) The concentration of methane gas
generated by the facility does not exceed 25% of the lower explosive limit for
methane in facility structures (excluding gas control or recovery system
components); and,
(2) The
concentration of methane gas does not exceed the lower explosive limit for
methane at the facility property boundary.
b. Owners/operators of all Class Three landfills shall implement a routine methane monitoring program to ensure that the standards in paragraph a. above are met.
(1) The type and frequency of monitoring
shall be determined based on the following factors:
(a) Soil conditions;
(b) The hydrogeologic conditions surrounding
the facility;
(c) The hydraulic
conditions surrounding the facility; and,
(d) The location of facility structures and
property boundaries.
(2)
The minimum frequency of monitoring shall be quarterly.
c. If methane gas levels exceeding the limits specified in Section258.23.a. above are detected, the permittee shall:
(1) Immediately take all necessary steps to
ensure protection of human health and notify the Department;
(2) Within seven days of detection, place in
the operating record and submit to the Department a copy of the methane gas
levels detected and a description of the steps taken to protect human health;
and,
(3) Within 30 days of
detection, submit a methane remediation plan and construction details, signed
and stamped by a South Carolina Licensed Professional Engineer, to the
Department for approval; and,
(4)
Within 30 days of plan approval, implement the Department approved remediation
plan for the methane gas releases, place a copy of the plan in the operating
record, and notify the Department that the plan has been implemented. The plan
shall describe the nature and extent of the problem, the proposed remedy, and
contain a schedule for compliance.
d. Definitions. See Part 1., Section B. for definitions that apply to this regulation.
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