[Title 40 CFR 60.1935]
[Code of Federal Regulations (annual edition) - July 1, 2009 Edition]
[Title 40 - PROTECTION OF ENVIRONMENT]
[Chapter I - ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)]
[Subchapter C - AIR PROGRAMS (CONTINUED)]
[Part 60 - STANDARDS OF PERFORMANCE FOR NEW STATIONARY SOURCES--]
[Subpart Bbbb - Emission Guidelines and Compliance Times for Small]
[Sec. 60.1935 - What equations must I use?]
[From the U.S. Government Printing Office]


40PROTECTION OF ENVIRONMENT62009-07-012009-07-01false60.1935Sec. 60.1935PROTECTION OF ENVIRONMENTENVIRONMENTAL PROTECTION AGENCY (CONTINUED)AIR PROGRAMS (CONTINUED)STANDARDS OF PERFORMANCE FOR NEW STATIONARY SOURCES--Emission Guidelines and Compliance Times for Small
Sec. 60.1935  What equations must I use?

    (a) Concentration correction to 7 percent oxygen. Correct any 
pollutant concentration to 7 percent oxygen using equation 1 of this 
section:
[GRAPHIC] [TIFF OMITTED] TR06DE00.003

Where:

C7 = concentration corrected to 7 percent oxygen.
Cunc = uncorrected pollutant concentration.
CO2 = concentration of oxygen (percent).

    (b) Percent reduction in potential mercury emissions. Calculate the 
percent reduction in potential mercury emissions (%PHg) using 
equation 2 of this section:

[[Page 824]]

[GRAPHIC] [TIFF OMITTED] TR06DE00.004

Where:

%PHg = percent reduction of potential mercury emissions
Ei = mercury emission concentration as measured at the air 
pollution control device inlet, corrected to 7 percent oxygen, dry basis
Eo = mercury emission concentration as measured at the air 
pollution control device outlet, corrected to 7 percent oxygen, dry 
basis

    (c) Percent reduction in potential hydrogen chloride emissions. 
Calculate the percent reduction in potential hydrogen chloride emissions 
(%PHC1) using equation 3 of this section:
[GRAPHIC] [TIFF OMITTED] TR06DE00.005

Where:

%PHC1 = percent reduction of the potential hydrogen chloride 
emissions
Ei = hydrogen chloride emission concentration as measured at 
the air pollution control device inlet, corrected to 7 percent oxygen, 
dry basis
Eo = hydrogen chloride emission concentration as measured at 
the air pollution control device outlet, corrected to 7 percent oxygen, 
dry basis

    (d) Capacity of a municipal waste combustion unit. For a municipal 
waste combustion unit that can operate continuously for 24-hour periods, 
calculate the municipal waste combustion unit capacity based on 24 hours 
of operation at the maximum charge rate. To determine the maximum charge 
rate, use one of two methods:
    (1) For municipal waste combustion units with a design based on heat 
input capacity, calculate the maximum charging rate based on the maximum 
heat input capacity and one of two heating values:
    (i) If your municipal waste combustion unit combusts refuse-derived 
fuel, use a heating value of 12,800 kilojoules per kilogram (5,500 
British thermal units per pound).
    (ii) If your municipal waste combustion unit combusts municipal 
solid waste, use a heating value of 10,500 kilojoules per kilogram 
(4,500 British thermal units per pound).
    (2) For municipal waste combustion units with a design not based on 
heat input capacity, use the maximum designed charging rate.
    (e) Capacity of a batch municipal waste combustion unit. Calculate 
the capacity of a batch municipal waste combustion unit as the maximum 
design amount of municipal solid waste they can charge per batch 
multiplied by the maximum number of batches they can process in 24 
hours. Calculate the maximum number of batches by dividing 24 by the 
number of hours needed to process one batch. Retain fractional batches 
in the calculation. For example, if one batch requires 16 hours, the 
municipal waste combustion unit can combust 24/16, or 1.5 batches, in 24 
hours.
    (f) Quarterly carbon usage. If you use activated carbon to comply 
with the dioxins/furans or mercury limits, calculate the required 
quarterly usage of carbon using equation 4 of this section for plant 
basis or equation 5 of this section for unit basis:
    (1) Plant basis.
    [GRAPHIC] [TIFF OMITTED] TR06DE00.006
    
Where:

C = required quarterly carbon usage for the plant in kilograms (or 
pounds).
fi = required carbon feed rate for the municipal waste 
combustion unit in kilograms (or pounds) per hour. That is the average 
carbon feed rate during the most recent mercury or dioxins/furans stack 
tests (whichever has a higher feed rate).
hi = number of hours the municipal waste combustion unit was 
in operation during the calendar quarter (hours).
n = number of municipal waste combustion units, i, located at your 
plant.


[[Page 825]]


    (2) Unit basis.
    [GRAPHIC] [TIFF OMITTED] TR06DE00.007
    
Where:

C = required quarterly carbon usage for the unit in kilograms (or 
pounds).
f = required carbon feed rate for the municipal waste combustion unit in 
kilograms (or pounds) per hour. That is the average carbon feed rate 
during the most recent mercury or dioxins/furans stack tests (whichever 
has a higher feed rate).
h = number of hours the municipal waste combustion unit was in operation 
during the calendar quarter (hours).

                               Definitions