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Title 40: Protection of Environment
CHAPTER I: ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)
SUBCHAPTER C: AIR PROGRAMS (CONTINUED)
PART 98: MANDATORY GREENHOUSE GAS REPORTING
Subpart HH: Municipal Solid Waste Landfills
98.346 - Data reporting requirements.
In addition to the information required by § 98.3(c), each annual report must contain the following information for each landfill.
(a) A classification of the landfill as “open” (actively received waste in the reporting year) or “closed” (no longer receiving waste), the year in which the landfill first started accepting waste for disposal, the last year the landfill accepted waste (for open landfills, enter the estimated year of landfill closure), the capacity (in metric tons) of the landfill, an indication of whether leachate recirculation is used, and the waste disposal quantity for each year of landfilling.
(b) Method for estimating waste disposal quantity, and reason for its selection.
(c) Waste composition for each year of landfilling, if available, in percentage categorized as:
(1) Municipal.
(2) Biosolids or biological sludges.
(3) Other, or more refined categories, such as those for which k rates are available in Table HH-1 of this subpart, and the method or basis for estimating waste composition.
(d) For each waste type used to calculate CH4 generation using Equation HH-1 of this subpart, you must report:
(1) Degradable organic carbon (DOC) value used in the calculations.
(2) Decay rate (k) value used in the calculations.
(e) Fraction of CH4 in landfill gas (F) and an indication of whether the fraction of CH4 was determined based on measured values or the default value.
(f) The surface area of the landfill containing waste (in square meters), the cover types applicable to the landfill, the surface area and oxidation fraction for each cover type used to calculate the average oxidation fraction, and the average oxidation fraction used in the calculations.
(g) The modeled annual methane generation rate for the reporting year (metric tons CH4) calculated using Equation HH-1 of this subpart.
(h) For landfills without gas collection systems, the annual methane emissions (i.e., the methane generation, adjusted for oxidation, calculated using Equation HH-5 of this subpart), reported in metric tons CH4.
(i) For landfills with gas collection systems, you must report:
(1) Total volumetric flow of landfill gas collected for destruction (cubic feet at 520 °R or 60 °F and 1 atm).
(2) CH4 concentration of landfill gas collected for destruction (percent by volume).
(3) Monthly average temperature for each month at which flow is measured for landfill gas collected for destruction, or statement that temperature is incorporated into internal calculations run by the monitoring equipment.
(4) Monthly average pressure for each month at which flow is measured for landfill gas collected for destruction, or statement that temperature is incorporated into internal calculations run by the monitoring equipment.
(5) An indication of whether destruction occurs at the landfill facility or off-site. If destruction occurs at the landfill facility, also report an indication of whether a back-up destruction device is present at the landfill, the annual operating hours for the primary destruction device, the annual operating hours for the back-up destruction device (if present), and the destruction efficiency used (percent).
(6) Annual quantity of recovered CH4 (metric tons CH4) calculated using Equation HH-4 of this subpart.
(7) A description of the gas collection system (manufacture, capacity, number of wells, etc.), the surface area (square meters) and estimated waste depth (meters) for each area specified in Table HH-3 of this subpart, the estimated gas collection system efficiency for landfills with this gas collection system, and the annual operating hours of the gas collection system.
(8) Methane generation corrected for oxidation calculated using Equation HH-5 of this subpart, reported in metric tons CH4.
(9) Methane generation (GCH4) value used as an input to Equation HH-6 of this subpart. Specify whether the value is modeled (GCH4 from HH-1 of this subpart) or measured (R from Equation HH-4 of this subpart).
(10) Methane generation corrected for oxidation calculated using Equation HH-7 of this subpart, reported in metric tons CH4.
(11) Methane emissions calculated using Equation HH-6 of this subpart, reported in metric tons CH4.
(12) Methane emissions calculated using Equation HH-8 of this subpart, reported in metric tons CH4.
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