Code of Maryland Regulations › Title 26 - DEPARTMENT OF ENVIRONMENT › Part 2 - SUBTITLES 08-12 › Subtitle 11 - AIR QUALITY › Chapter 26.11.42 - Control of Methane Emissions from Municipal Solid Waste Landfills › Section 26.11.42.05 - Requirements for Gas Collection and Control Systems

Current through Register Vol. 51, No. 14, July 12, 2024
A. Design Plan
				  and Installation.
(1) If a gas collection and
				  control system which meets the requirements in §B of this regulation has not
				  been installed, the owner or operator of a MSW landfill shall submit a design
				  plan to the Department within 1 year following the effective date of this
				  regulation or within 1 year of detecting any measured concentration of methane
				  of 200 ppmv or greater in accordance with the provisions in Regulation
				  .04(B)(3) of this chapter.
(2) A
				  design plan shall meet the following requirements:
(a) Be prepared and certified by a
				  professional engineer;
(b) Address
				  the following issues:
(i) Depths of solid
				  waste;
(ii) Solid waste gas
				  generation rates and flow characteristics;
(iii) Cover properties;
(iv) Gas system expandability;
(v) Leachate and condensate
				  management;
(vi)
				  Accessibility;
(vii) Compatibility
				  with filling operations;
(viii)
				  Integration with closure end use;
(ix) Air intrusion control;
(x) Corrosion resistance;
(xi) Fill settlement;
(xii) Resistance to the solid waste
				  decomposition heat; and
(xiii) The
				  ability to isolate individual components or sections for repair or
				  troubleshooting without shutting down entire collection system.
(c) Provide for the control of the
				  collected gas using a gas collection and control system meeting the
				  requirements of §B(1), §B(2), §B(3), or §B(4) of this regulation or an
				  alternative method approved in accordance with the provisions in Regulation .08
				  of this chapter;
(d) Demonstrate
				  that the gas collection and control system is designed to handle the maximum
				  expected gas generation flow rate from the entire area of the MSW landfill that
				  warrants control over the intended use period of the gas control system
				  equipment;
(e) Include any proposed
				  alternatives to the requirements, justification for the need for any proposed
				  alternatives, test methods, procedures, compliance measures, monitoring, and
				  recordkeeping or reporting requirements in accordance with the provisions in
				  Regulation .08 of this chapter;
(f)
				  Include a description of potential mitigation measures to be used to prevent
				  the release of methane or other pollutants into the atmosphere during the
				  installation or preparation of wells, piping, or other equipment, during
				  repairs or the temporary shutdown of gas collection system components, or when
				  solid waste is to be excavated and moved;
(g) For active MSW landfills, identify areas
				  of the landfill that are closed or inactive;
(h) Design the gas collection and control
				  system to handle the expected gas generation flow rate from the entire area of
				  the landfill and to collect gas at an extraction rate to comply with the
				  surface methane concentration standards in Regulation .07A of this chapter,
				  component leak standards in Regulation .09B(7) of this chapter, and which is
				  sufficient to meet all operational and performance standards in this
				  chapter;
(i) Identify any areas of
				  the MSW landfill that contains only asbestos-containing or non-decomposable
				  solid waste that may be excluded from gas collection provided that the owner or
				  operator submits documentation to the Department containing the nature of the
				  waste, date of deposition, and location and amount of asbestos-containing or
				  non-decomposable solid waste deposited in the area;
(j) Design the gas collection and control
				  system to maintain a negative pressure at all wellheads in the collection
				  system without causing air infiltration, including any wellheads connected to
				  the system as a result of expansion or excess surface emissions;
(k) Ascertain the density of wells,
				  horizontal collectors, surface collectors, or other gas extraction devices
				  necessary to achieve compliance with §B of this regulation; and
(l) Include any procedures for detecting and
				  suppressing any internal landfill fires or thermal waste oxidation events that
				  might occur within the waste, and for mitigating any damage that may have
				  occurred to pollution control devices such as the liner, leachate collection
				  system, cap, or gas collection system elements as a result of the
				  event.
(3) The maximum
				  expected gas generation flow rate in §A(2)(d) of this regulation shall be
				  calculated using the test method in Regulation .11B or an alternative test
				  method approved in accordance with Regulation .08 of this chapter.
(4) The owner or operator of a MSW landfill
				  that is required or chooses to install and operate a gas collection and control
				  system, shall do so within 30 months after approval of the design
				  plan.
(5) If an owner or operator
				  is modifying an existing gas collection and control system to meet the
				  requirements of this regulation, the owner or operator shall submit an amended
				  design plan to the Department that includes the information in §A(2) of this
				  regulation and any necessary updates or addenda in accordance with Regulation
				  .10C(9) of this chapter.
(6) The
				  gas collection and control system shall be operated, maintained, and expanded
				  in accordance with the procedures and schedules in the approved design
				  plan.