If there is no Gas Collection System at your Landfill:

{toggle-cloak

:id

=PNG1}

{cloak:id=PNG1|

cloak.toggle.type

=none|cloak.toggle.zone=true}

{cloak}

From the Subpart Overview page, click the OPEN button located opposite "Methane “Methane Generation and Emissions for Landfills without LFG Collection Systems."”

{composition-setup}{composition-setup}

{toggle-cloak

:id

=PNG2}

{cloak

:id=PNG2|cloak.toggle.

type=none|cloak.toggle.zone=true}

{cloak}

This page displays a summary of the CH₄ data calculated by e-GGRT. Click NEXT to move on to the "Equation HH-1 Summary and Result" page.

For each equation:

• Hover over an element in the equation to read a definition of that element as needed.
• On these equation pages, you will have the option to use the result calculated by e-GGRT or enter your own result by clicking on one of the following radio buttons at the bottom of the page:
  • "Use the calculated result rounded"
  • "Enter my own result (value will be rounded)"

Equation HH-1 Summary and Result

After clicking the NEXT button, you will be brought to the "Equation HH-1 Summary and Result" page. On this page, e-GGRT will calculate the annual modeled methane generation (G_CH4) in metric tons per year (the output of Equation HH-1) for each waste type identified in the "Waste “Waste Characterization Information" Information” section. e-GGRT will calculate your total annual modeled CH₄ generation with Equation TT-Q by summing each waste type, rounding the value according to e-GGRT rounding rules, and storing both the rounded and unrounded values in the database.

e-GGRT will also allow you to report the modeled annual methane generation (G_CH4) in metric tons per year (the output of Equation HH-1). To enter a value, click the "Enter my own result" button and enter your result in the box that shows up below the question. e-GGRT will store your estimated value of modeled annual methane generation (G_CH4) in metric tons per year (the output of Equation HH-1), round the value to the nearest metric ton, and store the rounded value and the facility-entered unrounded value in the database.

{toggle-cloak

:id

=PNG30}

{cloak

:id=PNG30|cloak.toggle.

type=none|cloak.toggle.zone=true}

{cloak}

Click NEXT to move on to the "Equation HH-5 Summary and Result" page.

Equation HH-5 Summary and Result

On this page, e-GGRT will calculate the landfill's annual methane generation adjusted for oxidation using Equation HH-5. e-GGRT will then round the result according to e-GGRT rounding rules, and store both the rounded and unrounded values in the database.

You may use this result or enter your own value by clicking the "Enter my own result" button. Enter your result in the box that shows up below the question. e-GGRT will store your estimated value, round the value according to e-GGRT rounding rules, and store both the rounded and unrounded value in the database.

{toggle-cloak

:id

=PNG31}

{cloak:id=PNG31|

cloak.toggle.type

=none|cloak.toggle.zone=true}

{cloak}

When you have entered the information, click NEXT. This will take you to the summary page where you can click SAVE. Then click Subpart Overview to return to the Subpart Overview page.

#Back to Top

If there is a Gas Collection System at your Landfill:

{toggle-cloak

:id

=PNG1}

{cloak:id=PNG1|

cloak.toggle.type

=none|cloak.toggle.zone=true}

{cloak}

Emissions Reporting Emissions Reporting Overview

From the Subpart HH Overview page, click the OPEN button located opposite "Methane “Methane Generation and Emissions for Landfills with LFG Collection Systems."”

{composition-setup}{composition-setup}

{toggle-cloak

:id

=PNG4}

{cloak:id=PNG4|cloak

.toggle.

type=none|cloak.toggle.zone=true}

Image Added

{cloak}

On the first page, the following information is collected:

• Total volumetric flow of landfill gas collected for destruction (in scf)
• Indicate if a missing data procedure was used to determine the volume of the landfill gas collected for destruction (information about appropriate procedures for estimating missing data is found in §98.345.
  • If a missing data procedure was used, enter the number of days when substitute data were used to determine the volume of the landfill gas collected for destruction
• Annual average concentration of CH4 of landfill gas collected for destruction
• Indicate if a missing data procedure was used to determine the concentration of CH4 in landfill gas collected for destruction (information about appropriate procedures for estimating missing data are found in §98.345.
  • If a missing data procedure was used and the CH4 concentration is monitored continuously, enter the number of days substitute data were used to determine the annual average CH4 concentration of landfill gas collected for destruction
  • If a missing data procedure was used and the CH4 concentration is monitored weekly, enter the number of weeks substitute data were used to determine the annual average CH4 concentration of landfill gas collected for destruction
  • In the case of multiple measurement locations, you may enter values for both days and weeks when CH4 concentration is measured continuously at some locations and weekly at others.
• Indicate (yes/no) if temperature was incorporated into internal calculations run by the collection system's system’s monitoring equipment
  • If temperature was not incorporated into the internal calculations run by the collection system's system’s monitoring equipment, enter the average monthly temperature at which the landfill gas flow was measured (in degrees Rankine) for each month of the reporting year.
• Indicate (yes/no) if pressure was incorporated into internal calculations run by the collection system's system’s monitoring equipment
  • If pressure was not incorporated into the internal calculations run by the collection system's system’s monitoring equipment, enter the average monthly pressure at which the landfill gas flow was measured (in atmospheres) for each month of the reporting year.
• Indicate whether landfill gas flow was measured on a wet or a dry basis and whether CH4 concentration was measured on a wet or a dry basis
  • If landfill gas flow was measured on a wet basis and CH4 concentration was measured on a dry basis, or gas flow was measured on a dry basis and CH4 concentration was measured on a wet basis, provide the monthly average moisture content (expressed as a decimal fraction) for each month of the reporting year.
• Indicate whether landfill gas destruction occurred at the facility (on-site), off-site, or both. If any landfill gas destruction occurred at the facility (you answered 'at the facility' or 'both' to the previous questions), provide the following information:
  • Indicate if a back-up destruction device is present at the facility.
  • The annual operating hours for the primary destruction device.
  • The annual operating hours for the back-up destruction device if present.
  • The destruction efficiency used in Equations HH-6 and HH-8 as a decimal fraction for the primary and back-up devices.

When you have entered the information, click SAVE. You will be brought back to the top of the "GHG Reporting" “GHG Reporting” page at which time you may check over the information entered. When you have completed your check, click NEXT to be taken to the next page for data input.

Emissions Reporting Equations

For each equation:

• Hover over an element in the equation to read a definition of that element as needed.
• The equation may be calculated by e-GGRT itself or by using a spreadsheet tool provided. Spreadsheets are also available for calculating inputs to the equations. For example, use the Subpart TT-1, TT-2/TT-3, and TT-4a/TT-4b spreadsheets to calculate inputs to Equation TT-6 as needed.
• If a spreadsheet tool is available for download on the page, download the spreadsheet tool by clicking the link labeled "Use “Use TT-n or HH-n spreadsheet to calculate."”
• Fill in the spreadsheet completely using the instructions provided in the tool.
• After completing the spreadsheet, copy the value of CH4 calculated by the spreadsheet to this page in the corresponding box.
• On most equation pages, you will have the option to use the result calculated by e-GGRT or enter your own result by clicking on one of the following radio buttons at the bottom of the page:
  • "Use the calculated result rounded"
  • "Enter my own result (value will be rounded)"

There will be a series of pages for these equations. You will have to click the NEXT button to get to the next equation page or you can use the links in the gray box at the top of each page to hop from equation to equation.

:id

=PNG7}

:id

=PNG8}

:id

=PNG9}

:id

=PNG10}

:id

=PNG11}

:id

=PNG12}

:id

=PNG13}

:id

=PNG25}

:id

=PNG20}

:id

=PNG5}