Except as specified in this section, all terms used in this subpart have the same meaning given in the Clean Air Act and subpart A of this part.
Construction and demolition (C&D;) waste landfill means a solid waste disposal facility subject to the requirements of part 257, subparts A or B of this chapter that receives construction and demolition waste and does not receive hazardous waste (defined in Sec. 261.3 of this chapter) or industrial solid waste (defined in Sec. 258.2 of this chapter) or municipal solid waste (as defined in Sec. 98.6) other than residential lead-based paint waste. A C&D; waste landfill typically receives any one or more of the following types of solid wastes: Roadwork material, excavated material, demolition waste, construction/renovation waste, and site clearance waste.
Destruction device means a flare, thermal oxidizer, boiler, turbine, internal combustion engine, or any other combustion unit used to destroy or oxidize methane contained in landfill gas.
Industrial waste landfill means any landfill other than a municipal solid waste landfill, a RCRA Subtitle C hazardous waste landfill, or a TSCA hazardous waste landfill, in which industrial solid waste, such a RCRA Subtitle D wastes (nonhazardous industrial solid waste, defined in Sec. 257.2 of this chapter), commercial solid wastes, or conditionally exempt small quantity generator wastes, is placed. An industrial waste landfill includes all disposal areas at the facility.
Landfill capacity means the maximum amount of solid waste a landfill can accept. For the purposes of this subpart, for landfills that have a permit, the landfill capacity can be determined in terms of volume or mass in the most recent permit issued by the state, local, or Tribal agency responsible for regulating the landfill, plus any in-place waste not accounted for in the most recent permit. If the owner or operator chooses to convert from volume to mass to determine its capacity, the calculation must include a site-specific density.
Leachate recirculation means the practice of taking the leachate collected from the landfill and reapplying it to the landfill by any of one of a variety of methods, including pre-wetting of the waste, direct discharge into the working face, spraying, infiltration ponds, vertical injection wells, horizontal gravity distribution systems, and pressure distribution systems.
Solid waste has the meaning established by the Administrator pursuant to the Solid Waste Disposal Act (42 U.S.C.A. 6901 et seq.).
Working capacity means the maximum volume or mass of waste that is actually placed in the landfill from an individual or representative type of 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. [75 FR 66473, Oct. 28, 2010, as amended at 78 FR 71970, Nov. 29, 2013]
Sec. 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 0.02......................... yr -1
leachate \a\ <20 inches/year).k (precipitation plus recirculated 0.038........................ yr -1
leachate \a\ 20-40 inches/year).k (precipitation plus recirculated 0.057........................ yr -1
leachate \a\ 40 inches/year).----------------------------------------------------------------------------------------------------------------
DOC and k values--Modified bulk MSW option----------------------------------------------------------------------------------------------------------------DOC (bulk MSW, excluding inerts and C&D; 0.31......................... Weight fraction, wet basis.
waste).DOC (inerts, e.g., glass, plastics, 0.00......................... Weight fraction, wet basis.
metal, concrete).DOC (C&D; waste).......................... 0.08......................... Weight fraction, wet basis.k (bulk MSW, excluding inerts and C&D; 0.02 to 0.057 \b\............ yr -1
waste).k (inerts, e.g., glass, plastics, metal, 0.00......................... yr -1
concrete).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, 0.00......................... Weight fraction, wet basis.
metal, cement).k (food waste)........................... 0.06 to 0.185 \c\............ yr -1k (garden)............................... 0.05 to 0.10 \c\............. yr -1
k (paper)................................ 0.04 to 0.06 \c\............. yr -1k (wood and straw)....................... 0.02 to 0.03 \c\............. yr -1k (textiles)............................. 0.04 to 0.06 \c\............. yr -1k (diapers).............................. 0.05 to 0.10 \c\............. yr -1k (sewage sludge)........................ 0.06 to 0.185 \c\............ yr -1k (inerts e.g., glass, plastics, metal, 0.00......................... yr -1
concrete).----------------------------------------------------------------------------------------------------------------
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] Sec. Table HH-2 to Subpart HH of Part 98--U.S. Per Capita Waste Disposal
Rates ------------------------------------------------------------------------
Waste per capita ton/
Year cap/yr------------------------------------------------------------------------1950.............................................. 0.631951.............................................. 0.631952.............................................. 0.631953.............................................. 0.631954.............................................. 0.631955.............................................. 0.631956.............................................. 0.631957.............................................. 0.631958.............................................. 0.631959.............................................. 0.631960.............................................. 0.631961.............................................. 0.641962.............................................. 0.641963.............................................. 0.651964.............................................. 0.651965.............................................. 0.661966.............................................. 0.661967.............................................. 0.671968.............................................. 0.681969.............................................. 0.681970.............................................. 0.691971.............................................. 0.691972.............................................. 0.701973.............................................. 0.711974.............................................. 0.711975.............................................. 0.721976.............................................. 0.731977.............................................. 0.731978.............................................. 0.741979.............................................. 0.751980.............................................. 0.751981.............................................. 0.761982.............................................. 0.771983.............................................. 0.771984.............................................. 0.781985.............................................. 0.791986.............................................. 0.791987.............................................. 0.801988.............................................. 0.801989.............................................. 0.831990.............................................. 0.821991.............................................. 0.761992.............................................. 0.741993.............................................. 0.761994.............................................. 0.751995.............................................. 0.701996.............................................. 0.681997.............................................. 0.691998.............................................. 0.751999.............................................. 0.752000.............................................. 0.802001.............................................. 0.912002.............................................. 1.022003.............................................. 1.022004.............................................. 1.012005.............................................. 0.982006.............................................. 0.952007.............................................. 0.952008.............................................. 0.952009 and all later years.......................... 0.95------------------------------------------------------------------------ [78 FR 71971, Nov. 29, 2013]
Sec. Table HH-3 to Subpart HH of Part 98--Landfill Gas Collection
Efficiencies ------------------------------------------------------------------------
Landfill Gas Collection
Description Efficiency------------------------------------------------------------------------A1: Area with no waste in-place........ Not applicable; do not use this
area in the calculation.
A2: Area without active gas collection, CE2: 0%.
regardless of cover type.A3: Area with daily soil cover and CE3: 60%.
active gas collection.A4: Area with an intermediate soil CE4: 75%.
cover, or a final soil cover not
meeting the criteria for A5 below, and
active gas collection.A5: Area with a final soil cover of 3 CE5: 95%.
feet or thicker of clay and/or
geomembrane cover system and active
gas collection.Area weighted average collection CEave1 = (A2*CE2 + A3*CE3 +
efficiency for landfills. A4*CE4 + A5*CE5) / (A2 + A3 +
A4 + A5).------------------------------------------------------------------------ [74 FR 56374, Oct. 30, 2009, as amended at 75 FR 66474, Oct. 28, 2010]
Sec. Table HH-4 to Subpart HH of Part 98--Landfill Methane Oxidation
Fractions ------------------------------------------------------------------------
Use this
landfill
Under these conditions: methane
oxidation
fraction:------------------------------------------------------------------------
I. For all reporting years prior to the 2013 reporting year------------------------------------------------------------------------C1: For all landfills regardless of cover type or 0.10
methane flux...........................................------------------------------------------------------------------------
II. For the 2013 reporting year and all subsequent years------------------------------------------------------------------------C2: For landfills that have a geomembrane (synthetic) 0.0
cover with less than 12 inches of cover soil for the
majority of the landfill area containing waste.........C3: For landfills that do not meet the conditions in C2 0.10
above, and for which you elect not to determine methane
flux...................................................C4: For landfills that do not meet the conditions in C2 0.10
above and that do not have a soil cover of at least 24
inches for a majority of the landfill area containing
waste..................................................C5: For landfills that have a soil cover of at least 24 0.35
inches for a majority of the landfill area containing
waste and for which the methane flux rate is less than
10 grams per square meter per day (g/m\2\/d)...........C6: For landfills that have a soil cover of at least 24 0.25
inches for a majority of the landfill area containing
waste and for which the methane flux rate is 10 to 70 g/
m\2\/d.................................................C7: For landfills that have a soil cover of at least 24 0.10
inches for a majority of the landfill area containing
waste and for which the methane flux rate is greater
than 70 g/m\2\/d.......................................------------------------------------------------------------------------\a\ Methane flux rate (in grams per square meter per day; g/m\2\/d) is
the mass flow rate of methane per unit area at the bottom of the
surface soil prior to any oxidation and is calculated as follows: [GRAPHIC] [TIFF OMITTED] TR29NO13.024 Where: MF = Methane flux rate from the landfill in the reporting year (grams
per square meter per day, g/m\2\/d).K = unit conversion factor = 10\6\/365 (g/metric ton per days/year) or
10\6\/366 for a leap year.SArea = The surface area of the landfill containing waste at the
beginning of the reporting year (square meters, m\2\).GCH4 = Modeled methane generation rate in reporting year from
Equation HH-1 of this subpart or Equation TT-1 of subpart TT
of this part, as applicable, except for application with
Equation HH-6 of this subpart (metric tons CH4).
For application with Equation HH-6 of this subpart, the
greater of the modeled methane generation rate in reporting
year from Equation HH-1 of this subpart or Equation TT-1 of
this part, as applicable, and the quantity of recovered
CH4 from Equation HH-4 of this subpart (metric tons
CH4).CE = Collection efficiency estimated at landfill, taking into account
system coverage, operation, and cover system materials from
Table HH-3 of this subpart. If area by soil cover type
information is not available, use default value of 0.75 (CE4
in table HH-3 of this subpart) for all areas under active
influence of the collection system.N = Number of landfill gas measurement locations (associated with a
destruction device or gas sent off-site). If a single
monitoring location is used to monitor volumetric flow and
CH4 concentration of the recovered gas sent to one
or multiple destruction devices, then N=1.Rn = Quantity of recovered CH4 from Equation HH-4
of this subpart for the nth measurement location (metric
tons).fRec,n = Fraction of hours the recovery system associated
with the nth measurement location was operating (annual
operating hours/8760 hours per year or annual operating hours/
8784 hours per year for a leap year). [78 FR 71971, Nov. 29, 2013]
Subpart II_Industrial Wastewater Treatment
Source: 75 FR 39767, July 12, 2010, unless otherwise noted.