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Calculation Spreadsheet | Calculation | Spreadsheet Applicability | Instructions |
|---|---|---|---|
Modeled methane generation rate in reporting year | All landfills | ||
Quantity of waste placed in the landfill in year x (wet basis) | Landfills where historical waste disposal quantity data are not readily available | ||
Annual quantity of recovered CH4 | Landfills with landfill gas collection systems | ||
Methane generation, adjusted for oxidation, from the landfill in the reporting year | All landfills | ||
Equation HH-6, HH-7, HH-8 Calculation Spreadsheet.xls (Archived) | Methane generation, adjusted for oxidation, from the landfill in the reporting year (by Equation HH-7) and Methane emissions from the landfill in the reporting year by two different ways (by Equation HH-6 and by Equation HH-8) | Landfills with landfill gas collection systems |
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For all landfills subject to the reporting requirements of Subpart HH, calculate annual modeled CH4 generation using the Equation HH-1 Calculation Spreadsheet and according to the requirements in 98.343(a)(1) through 98.343(a)(3). Equation HH-1 is provided below.
(Equation HH-1) | |
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For all landfills that were open in 2010 and received waste, Subpart HH requires users to determine the annual quantity of waste disposed in 2010 Per 98.343(a)(3), beginning in the first emissions reporting year, and each year thereafter, waste quantities must be determined using scales or the working capacity for each vehicle/container, for loads other than cars, light-duty trucks, and loads that cannot be measured with scales due to physical or operational limitations. These methods may also be applied If scales are in place at the landfill, they must be used to determine waste quantities for the first emissions reporting year and each year thereafter. Scales and/or working capacity may also have been used for any previous years for which waste disposal quantities were measured. Tipping receipts and company records may also be used to determine waste disposal quantities prior to 2010. For the range of years prior to 2010, for which measurement data, tipping receipts or company records are not available, estimate historical annual waste disposal quantities using one of the following methods:
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Calculation Spreadsheet | Calculation | Spreadsheet Applicability | Instructions |
|---|---|---|---|
Modeled methane generation rate in reporting year | All landfills | ||
Quantity of waste placed in the landfill in year x (wet basis) | Landfills where historical waste disposal quantity data are not readily available | ||
Annual quantity of recovered CH4 | Landfills with landfill gas collection systems | ||
Methane generation, adjusted for oxidation, from the landfill in the reporting year | All landfills | ||
Equation HH-6, HH-7, HH-8 Calculation Spreadsheet.xls (Archived) | Methane generation, adjusted for oxidation, from the landfill in the reporting year (by Equation HH-7) and Methane emissions from the landfill in the reporting yearand Methane emissions from the landfill in the reporting year by two different ways (by Equation HH-6 and by Equation HH-8) | Landfills with landfill gas collection systems |
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For landfills that collect and control landfill gas, calculate the annual quantity of CH4 recovered and destroyed using Equation HH-4 and the Equation HH-4 Calculation Spreadsheet. If you do not continuously monitor according to paragraph 98.343(b)(1), you must determine the volumetric flow rate, CH4 concentration, temperature, pressure, and moisture content of the landfill gas that is collected and routed to a destruction device (before any treatment equipment) according to the requirements in paragraphs 98.343(b)(2)(i) through 98.343(b)(2)(iii). Equation HH-4 is provided below.
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Calculate the annual CH4 emissions from the modeled CH4 generation and measured CH4 recovery using Equation HH-6 and the Equation HH-6, HH-7, HH-8 Calculation Spreadsheet for a landfill. This tab only applies to landfills with landfill gas collection systems with a single gas recovery measurement location. If multiple gas recovery measurement locations are used, see "Using the Equation HH-6, HH-7, HH-8_Multi Tab in the Equation HH-6, HH-7, HH-8 Calculation Spreadsheet." . Equation HH-6 is provided below.
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Calculate CH4 generation and CH4 CH()4 emissions from a landfill using measured CH4 recovery and estimated gas collection efficiency. These calculations employ Equations HH-7 and HH-8 and the Equation HH-6, HH-7, HH-8 Calculation Spreadsheet. This tab only applies to landfills with landfill gas collection systems with a single gas recovery measurement location. If multiple gas recovery measurement locations are used, see "Using the Equation HH-6, HH-7, HH-8_Multi Tab in the Equation HH-6, HH-7, HH-8 Calculation Spreadsheet." Equations HH-7 and HH-8 are provided below.
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The calculation spreadsheet will calculate the CH4 CH()4 generation and CH4 CH()4 emissions from this landfill in the reporting year. The calculated values will be displayed in red-bordered cells with white fill at the bottom of the spreadsheet. These values should be entered into e-GGRT for this landfill.
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The MultiDD_per_MeasLocation tab in the Equation HH-6, HH-7, HH-8 Calculation Spreadsheet provides the appropriate calculation of desctruction destruction efficiency DE and fraction of hours the destruction device was operating fDest for when a single gas recovery measurement location is used but the gas is destroyed via multiple destruction devices.
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