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Electronic Code of Federal Regulations

e-CFR data is current as of November 14, 2019

Title 40Chapter ISubchapter CPart 98Subpart HH → Appendix


Title 40: Protection of Environment
PART 98—MANDATORY GREENHOUSE GAS REPORTING
Subpart HH—Municipal Solid Waste Landfills


Table HH-1 to Subpart HH of Part 98—Emissions Factors, Oxidation Factors and Methods

FactorDefault valueUnits
DOC and k values—Bulk waste option
DOC (bulk waste)0.20Weight fraction, wet basis.
k (precipitation plus recirculated leachatea <20 inches/year)0.02yr−1
k (precipitation plus recirculated leachatea 20-40 inches/year)0.038yr−1
k (precipitation plus recirculated leachatea >40 inches/year)0.057yr−1
DOC and k values—Modified bulk MSW option
DOC (bulk MSW, excluding inerts and C&D waste)0.31Weight fraction, wet basis.
DOC (inerts, e.g., glass, plastics, metal, concrete)0.00Weight fraction, wet basis.
DOC (C&D waste)0.08Weight fraction, wet basis.
k (bulk MSW, excluding inerts and C&D waste)0.02 to 0.057byr−1
k (inerts, e.g., glass, plastics, metal, concrete)0.00yr−1
k (C&D waste)0.02 to 0.04byr−1
DOC and k values—Waste composition option
DOC (food waste)0.15Weight fraction, wet basis.
DOC (garden)0.2Weight fraction, wet basis.
DOC (paper)0.4Weight fraction, wet basis.
DOC (wood and straw)0.43Weight fraction, wet basis.
DOC (textiles)0.24Weight fraction, wet basis.
DOC (diapers)0.24Weight fraction, wet basis.
DOC (sewage sludge)0.05Weight fraction, wet basis.
DOC (inerts, e.g., glass, plastics, metal, cement)0.00Weight fraction, wet basis.
k (food waste)0.06 to 0.185cyr−1
k (garden)0.05 to 0.10cyr−1
k (paper)0.04 to 0.06cyr−1
k (wood and straw)0.02 to 0.03cyr−1
k (textiles)0.04 to 0.06cyr−1
k (diapers)0.05 to 0.10cyr−1
k (sewage sludge)0.06 to 0.185cyr−1
k (inerts e.g., glass, plastics, metal, concrete)0.00yr−1
Other parameters—All MSW landfills
MCF1.
DOCF0.5
F0.5
OXSee Table HH-4 of this subpart
DE0.99

aRecirculated 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.

bUse 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.

cUse 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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