40 CFR Appendix Table HH-1 to Subpart HH of Part 98, Emissions Factors, Oxidation Factors and Methods

Table HH-1 to Subpart HH of Part 98 - Emissions Factors, Oxidation Factors and Methods
Factor Default value Units
DOC and k values - Bulk waste option
DOC (bulk waste) 0.20 Weight fraction, wet basis.
k (precipitation plus recirculated leachate a <20 inches/year) 0.02 yr −1
k (precipitation plus recirculated leachate a 20-40 inches/year) 0.038 yr −1
k (precipitation plus recirculated leachate a >40 inches/year) 0.057 yr −1
DOC and k values - Modified bulk MSW option
DOC (bulk MSW, excluding inerts and C&D waste) 0.31 Weight fraction, wet basis.
DOC (inerts, e.g., glass, plastics, metal, concrete) 0.00 Weight fraction, wet basis.
DOC (C&D waste) 0.08 Weight fraction, wet basis.
k (bulk MSW, excluding inerts and C&D waste) 0.02 to 0.057 b yr −1
k (inerts, e.g., glass, plastics, metal, concrete) 0.00 yr −1
k (C&D waste) 0.02 to 0.04 b yr −1
DOC and k values - Waste composition option
DOC (food waste) 0.15 Weight fraction, wet basis.
DOC (garden) 0.2 Weight fraction, wet basis.
DOC (paper) 0.4 Weight fraction, wet basis.
DOC (wood and straw) 0.43 Weight fraction, wet basis.
DOC (textiles) 0.24 Weight fraction, wet basis.
DOC (diapers) 0.24 Weight fraction, wet basis.
DOC (sewage sludge) 0.05 Weight fraction, wet basis.
DOC (inerts, e.g., glass, plastics, metal, cement) 0.00 Weight fraction, wet basis.
k (food waste) 0.06 to 0.185 c yr −1
k (garden) 0.05 to 0.10 c yr −1
k (paper) 0.04 to 0.06 c yr −1
k (wood and straw) 0.02 to 0.03 c yr −1
k (textiles) 0.04 to 0.06 c yr −1
k (diapers) 0.05 to 0.10 c yr −1
k (sewage sludge) 0.06 to 0.185 c yr −1
k (inerts e.g., glass, plastics, metal, concrete) 0.00 yr −1
Other parameters - All MSW landfills
MCF 1.
DOCF 0.5
F 0.5
OX See Table HH-4 of this subpart
DE 0.99

a Recirculated leachate (in inches/year) is the total volume of leachate recirculated from company records or engineering estimates divided by the area of the portion of the landfill containing waste with appropriate unit conversions. Alternatively, landfills that use leachate recirculation can elect to use the k value of 0.057 rather than calculating the recirculated leachate rate.

b Use the lesser value when precipitation plus recirculated leachate is less than 20 inches/year. Use the greater value when precipitation plus recirculated leachate is greater than 40 inches/year. Use the average of the range of values when precipitation plus recirculated leachate is 20 to 40 inches/year (inclusive). Alternatively, landfills that use leachate recirculation can elect to use the greater value rather than calculating the recirculated leachate rate.

c Use the lesser value when the potential evapotranspiration rate exceeds the mean annual precipitation rate plus recirculated leachate. Use the greater value when the potential evapotranspiration rate does not exceed the mean annual precipitation rate plus recirculated leachate. Alternatively, landfills that use leachate recirculation can elect to use the greater value rather than assessing the potential evapotranspiration rate or recirculated leachate rate.

[ 75 FR 66473, Oct. 28, 2010, as amended at 78 FR 71970, Nov. 29, 2013]

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United States Code

Title 40 published on 2015-08-22

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 40 CFR Part 98 after this date.

  • 2016-12-09; vol. 81 # 237 - Friday, December 9, 2016
    1. 81 FR 89188 - 2015 Revisions and Confidentiality Determinations for Data Elements Under the Greenhouse Gas Reporting Rule
      GPO FDSys XML | Text
      ENVIRONMENTAL PROTECTION AGENCY
      Final rule; notice of final action on reconsideration.
      This rule is effective on January 1, 2017, except for amendatory instructions 3, 5, 6, 8, 10 through 25, 31 through 34, 36, 38 through 44, 46 through 50, 55 through 61, 63, 64, and 69 through 92, which are effective on January 1, 2018; and amendatory instructions 35, 37, 45, 51 through 54, which are effective on January 1, 2019. The incorporation by reference of certain publications listed in 40 CFR 98.7(l) and 40 CFR 98.324 is approved by the Director of the Federal Register as of January 1, 2017. The incorporation by reference of certain publications listed in 40 CFR 98.7(e), 40 CFR 98.34, and 40 CFR 98.36 is approved by the Director of the Federal Register as of January 1, 2018.
      40 CFR Part 98