Landfill Methane Control Measure
Applicability and Guidance

This page last reviewed July 26,2018

Help Determine Your Rule Applicability and Requirements:

msw
This page was created to provide resources that will help you determine your landfill applicability and requirements outlined in the Final Regulation Order. To better understand the regulation, you can also read the Landfill Methane Control Measure Implementation Guidance Document. For more background information, visit CARB's main Landfill Methane webpage.






Flowchart for Determining Requirements (PDF)

This flowchart is also located in Appendix C of the Implementation Guidance Document.

Decision Guide (Interactive)

Click to answer a series of questions to determine your rule applicability and requirements. You may click on previous questions and alternative answers at any time.

1. Is the Landfill a Municipal Solid Waste (MSW) Landfill?

  • What is the definition of a MSW landfill? What landfills are exempt? 7
  • No 8
  • Yes 2

2. Did the MSW Landfill receive solid waste after January 1, 1977?

  • What is the definition of solid waste? 9
  • No 10
  • Yes 3

3. Is the Waste-in-Place greater than, or equal to, 450,000 tons?

  • No11
  • Yes 4

4. Is the landfill gas heat input capacity greater than, or equal to, 3.0 MMBtu/hr?

  • No12
  • Yes 5

5. Was a Surface Emissions Demonstration conducted?

  • What is a Surface Emissions Demonstration?13
  • No 14
  • Yes 6

6. Is there any measured concentration of methane greater than, or equal to, 200ppmv?

  • No 15
  • Yes 16
“Municipal Solid Waste Landfill” or “MSW Landfill” means an entire disposal facility in a contiguous geographical space where solid waste is placed in or on land.

Exemptions: Per 95460, this subarticle does not apply to:

(a) Landfills that receive only hazardous waste, or are currently regulated under the Comprehensive Environmental Response, Compensation and Liability Act 42 U.S.C, Chapter 103 (Promulgated 12/11/80; Amended 10/17/86);

(b) Landfills that receive only construction and demolition wastes, inert waste, or non-decomposable wastes;

(c) Closed or inactive MSW landfills with less than 450,000 tons of Waste-in-Place.

For more information, view the Final Regulation Order.
No further action is necessary.
“Solid Waste” means all decomposable and non-decomposable solid, semisolid, and liquid wastes, including garbage, trash, refuse, paper, rubbish, ashes, industrial waste, manure, vegetable or animal solid and semisolid wastes, sludge, and other discarded solid and semisolid wastes. Solid waste also includes any material meeting the definition of Solid Waste in 40 CFR 60.751 (as last amended 64 Fed.Reg 9262, Feb 24, 1999) as incorporated by reference herein.

For more information, view the Final Regulation Order.
No further action is necessary.
If the MSW Landfill is active, submit a Waste-in-Place Report. The initial report is due 90 days after June 17, 2010, and Annual Reports are due March 15 of each year. The Waste-in-Place report must be submitted annually until either:

(a) The MSW landfill reaches a size greater than or equal to 450,000 tons of Waste-in-Place; or

(b) The owner or operator submits a Closure Notification pursuant to 95470(b)(1).

If a Closure Notification is submitted, no further action is necessary. Read 95470(b)(1) of the Final Regulation Order to learn about Reporting Requirements for Closure Notifications.
If the MSW Landfill is closed or inactive, per 95463(b)(1)(B)2, no further action is necessary. Submittal of a Closure Notification is not required.

If the MSW Landfill is active, the owner or operator must:

(a) Recalculate the landfill gas heat input capacity annually using the procedures specified in 95471(b) of the Final Regulation Order.

(b) Submit an annual Landfill Gas Heat Input Capacity Report to the Executive Officer until either of the following conditions is met:

▪  The calculated Landfill Gas Heat Input Capacity is greater than, or equal to, 3.0 MMBtu/hr recovered, or
▪  If the MSW landfill is active, the owner or operator submits a Closure Notification pursuant to 95470(b)(1).

If a Closure Notification is submitted, no further action is necessary. Read 95470(b)(1) of the Final Regulation Order to learn about Reporting Requirements for Closure Notifications.
A Surface Emissions Demonstration is a demonstration test that can be used to delay the installation of a gas collection and control system if a landfill is uncontrolled, and has a gas heat input capacity greater than, or equal to, 3.0 MMBtu/hr. However, the landfill owner or operator must show that after four consecutive quarterly monitoring periods (using instantaneous monitoring) that there is no measured concentration of methane of 200 ppmv on the landfill surface, other than non-repeatable measurements.

For more information, read the Implementation Guidance Document and 95463(b)(2)(B) of the Final Regulation Order.
Submit a gas collection and control system (GCCS) design plan by June 17, 2011, or perform one year of Surface Emissions Monitoring for readings above 200ppmv (if landfill is uncontrolled). The GCCS design plan approval/disapproval will be conducted by ARB or by a local air District within 120 days of receipt.

For active landfills: Install and operate the GCCS within 18 months of design plan approval. Then, submit an initial source test.

For closed/inactive landfills: Install/operate the GCCS within 30 months of design plan approval. Then, submit an initial source test.

Are landfill owners or operators with existing gas collection and control systems required to submit new design plans?

No, landfill owners or operators with existing gas collection and control systems are not required to submit new design plans. A new design plan is only required to be submitted if a gas collection and control system must be installed because the landfill is currently uncontrolled and the landfill gas heat input capacity is greater than 3.0 MMBtu/hr, or the surface demonstration option was not successful [ 95464(a)(1)]. An amended design plan is required if the existing GCCS is insufficient and must be modified to meet the requirements of the regulation [ 95464(a)(4)].

For more information on GCCS performance, design, and operation requirements, go to page II-6 through II-7 of the Implementation Guidance Document, and read 95464 through 95476 of the Final Regulation Order
If the MSW landfill is active: Recalculate the landfill gas heat input capacity annually, per 95463(b). Then, return to question #4. Or, if a Closure Notification is submitted, no further action is necessary. Read 95470(b)(1) of the Final Regulation Order to learn about Reporting Requirements for Closure Notifications.

If the MSW landfill is closed or inactive: Submit a Waste-in-Place report, and monitoring records, per 95463(b)(2)(B)3. After your submission, no further action is necessary.
Submit a gas collection and control system (GCCS) design plan, per 95464 through 95476 by June 17, 2011. The GCCS design plan approval/disapproval will be conducted by ARB or by a local air District within 120 days of receipt.

For active landfills: Install and operate the GCCS within 18 months of design plan approval.

For closed/inactive landfills: Install/operate the GCCS within 30 months of design plan approval. Thereafter, submit an initial source test.




For questions, please contact:

Mei Fong at (916) 324-2570

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