This page provides a step-by-step description of how to enter summary information on municipal solid waste (MSW) landfills as required by Subpart HH of the Greenhouse Gas Reporting Program.

Adding or Updating Summary Information for this Facility

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To add or modify Subpart HH summary information for this MSW landfill, press the OPEN button located opposite "Landfill Details."

Landfill Details must be populated before other information about the landfill and its emissions can be entered.

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The following MSW landfill information is collected for Subpart HH:

• Indicate if the landfill was open or closed in 2010. A landfill is considered open if it is actively receiving waste in the reporting year. A landfill is considered closed if it is no longer receiving waste.
  • If the landfill was open in 2010, indicate the year in which the landfill is expected to close.

2010 Waste Disposal Quantity Method

If the landfill was open in 2010, select the method that was used to determine the quantity of waste received at the landfill in the current reporting year for loads other than cars, light duty trucks, and loads that cannot be measured with scales due to physical or operational limitations. Choose from one of the following methods (from §98.343(a)(3)):

• Used scales to weigh each load before off-loading at the landfill and either used scales to weigh individual loads after off-loading or used a representative tare weight for the weight of the vehicle/container after off-loading at the landfill. According to §98.343(a)(3)(i)(B), the tare weight is determined by weighing no less than five of each type of vehicle or container after it has off-loaded the waste.
• Used vehicle/container working capacity, for example by using volumetric capacity and waste density measurements, for each container/vehicle used to haul waste to the landfill (§98.343(a)(3)(i)(C)). The working capacity means the maximum volume of mass of waste that is actually placed in the landfill from an individual or representative container (such as a tank, truck, or roll-off bin) used to convey wastes to the landfill, taking into account that the container may not be able to be 100 percent filled and/or 100 percent emptied for each load.
• Other. A facility may choose 'Other' only if best available monitoring methods (BAMM) were used per §98.3(d)(1) and (2). Facilities using BAMM after March 31, 2010 were to have received written approval from EPA to do so. Facilities that used BAMM must also specify the methods that were used in the text box provided in the Subpart A reporting form.

If you changed methods used for determining the waste disposal quantities during the reporting year, answer the question above by reporting the method used at the end of the reporting year. In addition, provide an explanation as to why you changed methods, for example, scales were installed at your facility mid-year. Please provide this explanation in the Subpart A text box that requests an explanation of changes to calculation methodologies.

Historical Waste Disposal Quantity Methods

There are several means by which the quantities of waste disposed of prior to 2010 may have been determined or estimated for purposes of the Greenhouse Gas Reporting Program: (1) determined using scales; (2) estimated from tipping receipts, other company records, or measured working capacities; or (3) estimated from one of the methods found in Section 98.343(a)(4), i.e., methods #1, 2, and 3 listed below. Reporters must indicate which method(s) was used to determine or estimate historical waste disposal quantities and the range of years in which that method was used.

Indicate (yes/no) if scales were used to determine waste disposal quantities for loads other than cars, light duty trucks, and loads that cannot be measured with scales due to physical or operational limitations prior to 2010.

If scales were used, indicate the year they started being used and the year they stopped being used.

Indicate (yes/no) if tipping receipts, other company records, or measured working capacities were used to estimate waste disposal quantities prior to 2010.

If tipping receipts, other company records, or measured working capacities were used to estimate waste disposal quantities prior to 2010, indicate the year in which they started being used and the year in which they stopped being used.

Indicate the method used to estimate all annual waste quantities that were not determined with scales or estimated through tipping receipts, other company records, or measured working capacities. Per §98.343(a)(4), one of the following methods may be used to estimate waste quantities, if none of these methods were used, select "None." If all waste quantities were either determined using scales or estimated using tipping receipts, other company records, or measured working capacities, select "None":

• Method #1: Assume all prior year's waste disposal quantities are the same as the waste quantity in the first year for which the waste quantities are available.

• Method #2: Use the estimated population served by the landfill in each year multiplied by the values for national average per capita waste disposal rates found in Table HH-2, to calculate the waste quantity landfilled per Equation HH-2.

• Method #3: Use the landfill capacity or, for operating landfills, the amount of waste-in-place to estimate a constant average waste disposal quantity per Equation HH-3. The amount of waste-in place is the capacity of the landfill used at the end of the year prior to the year when waste disposal data are available. The waste-in-place numbers may be derived from design drawings or engineering estimates.

If one of these methods was used (i.e., "None" was not selected), indicate the year in which the method started being used and the year in which it stopped being used.

If one of these methods was used (i.e., "None" was not selected), indicate the reason for which this particular method was selected.

If the landfill was closed in 2010 and Method #3, above, was not selected as the method by which historical waste disposal quantities were estimated, indicate the year in which the landfill closed.

If Method #3, above, was not selected as the method by which historical waste disposal quantities were estimated, indicate the capacity of the landfill in metric tons.

Landfill Gas Collection System

A landfill gas collection system means a system of pipes used to collect landfill gas from different locations in the landfill by means of a fan or similar mechanical draft equipment to a single location for treatment or use. A single landfill may have multiple gas collection systems. Landfill gas collection systems do not include "passive" systems, whereby landfill gas flows naturally to the surface of the landfill where an opening or pipe (vent) is installed to allow for natural gas flow.

Indicate if the landfill has a gas collection system (check the box if there is a gas collection system).

Indicate if passive vents and/or flares are present (other than as part of a gas collection system, as defined above) (check the box if passive vents and/or flares are present).

If the landfill has a landfill gas collection system, indicate the manufacturer of the gas collection system, the capacity of the system in actual cubic feet per minute (acfm), and the number of wells present at the landfill. For manufacturer of the gas collection system, indicate the entity that designed the gas collection system and the entity that installed the gas collection system. If this information is not available, report the manufacturer of the blower. Do not use this space to indicate the manufacturer of the flares in the place at the landfill.

Indicate if leachate recirculation is used at the landfill during the emissions reporting year (check the box if leachate recirculation is used).

If leachate recirculation is used, indicate the typical frequency with which it is used over the past 10 years. Choose one of the following:

• Used several times a year for the past 10 years
• Used at least once a year for the past 10 years
• Used occasionally (but not every year) over the past 10 years

Indicate if scales are present at the landfill (check box if scales are present)

Enter the surface area of the landfill containing waste in square meters

Cover Materials

Identify each type of cover material in use at the landfill. Choose from the following, more than one type of cover may be selected:

• Organic
• Clay
• Sand
• Other soil mixture (this should be selected for any cover type other than organic, clay, or sand)

When you have entered the required information, click SAVE. You will be brought back to the top of the Landfill Details page at which time you may check over the information you entered. When you have completed your check, click SUBPART OVERVIEW to return to the Subpart Overview page.

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See Also

Screen Errors
Using e-GGRT to Prepare Your Subpart HH Report
Subpart HH Waste Information
Subpart HH Emissions Information
Subpart Validation Report