Address: 1277 102ND STREET
City: FAIRBANK
State: IA
Postal Code: 50629

CO2 equivalent emissions from facility subparts C-II, SS, and TT (metric tons):188,166.6
CO2 equivalent emissions from supplier subparts LL-QQ (metric tons):
Biogenic CO2 emissions from facility subparts C-II, SS, and TT (metric tons):63.8
Cogeneration Unit Emissions Indicator:N
GHG Report Start Date:2020-01-01
GHG Report End Date:2020-12-31
Description of Changes to Calculation Methodology:In Subpart II, rather than reporting CH4 Emitted associated with 11 full weeks at 24 hours of operation per week (default calculations in e-GGRT), the emissions total has been manually revised to reflect 1,728 hours of operation (controlled). CH4 emissions were still calculated using the Subpart II equations II-6 and II-7. The uncontrolled CH4 emissions are reported separately, as tracked by the facility. This is a more accurate reflection of actual operation at the facility, rather than assuming the methanator was operating for 1,848 hours per year.
Plant Code Indicator:N
Primary NAICS Code:325193
Second Primary NAICS Code:

Parent Company Details:

Subpart C: General Stationary Fuel Combustion

Subpart II: Industrial Wastewater Treatment

Anaerobic Process Information:

Name or ID:	Methanator
Anaerobic Process:	Anaerobic Reactor
Is biogas generated in the process recovered?	Yes
Number of weeks that the system was operational:	11
Document or diagram that pertains to this process:
Average depth of the lagoon:
Does the facility measure COD or BOD5 concentration of the wastewater entering the anaerobic process?	COD
Does the facility perform an ethanol production processing operation? If yes, which process is used?	Dry milling process
How does the facility monitor the CH4 concentration in the biogas collected for destruction?	Weekly monitoring
Is the biogas temperature incorporated into the monitoring equipment internal calculations?	Yes
Is the biogas pressure incorporated into the monitoring equipment internal calculations?	Yes
Is the biogas moisture content incorporated into the monitoring equipment internal calculations?	Yes
Was biogas flow measured on a wet or dry basis?
Was biogas CH4 concentration measured on a wet or dry basis?
Does CH4 destruction occur at the facility, off-site, or both?	On-Site
CH4 collection efficiency (based on cover type):	0.99
Annual mass of CH4 generated from anaerobic wastewater treatment process:	27.06 (Metric Tons)
Annual mass of CH4 emissions from anaerobic wastewater treatment process:	0.58 (Metric Tons)

Equation II-1 Inputs:

Week	Floww (m3)	MDP?	CODw (kg/m3)	MDP?	B0 (kg CH4/kg COD)	ALT?	MCF	ALT?
1	3768.9		3.25		0.25		0.8
2	3752.8		6.67		0.25		0.8
3	4595.7		3.61		0.25		0.8
4	4654.9		3.30		0.25		0.8
5	2870.7		3.61		0.25		0.8
6	666.8		3.25		0.25		0.8
7	3913		3.54		0.25		0.8
8	2227.2		2.99		0.25		0.8
9	4425.9		2.89		0.25		0.8
10	4811.7		2.89		0.25		0.8
11	2423.8		2.62		0.25		0.8

Equation II-4 Inputs:

Week	Volumetric Biogas Flow (acf)	MDP?	Biogas CH4 Concentration (%)	MDP?	Biogas Temperature (°R)	Biogas Pressure (atm)	Biogas Moisture (cfw/cfb)
1
2
3
4
5
6
7
8
9				Yes
10
11

Equation II-6 Inputs:

Rn: Annual quantity of CH4 recovered from the Anaerobic Process:	29.05 (Metric Tons)
Annual operating hours for the primary destruction device:	1694
Destruction efficiency for the primary destruction device:	0.99
Fraction of hours the primary destruction device was operating:	0.912
Is a back-up destruction device present at the facility?	Yes
Annual operating hours for the back-up destruction device:	34
Destruction efficiency for the back-up destruction device:	0.99
Fraction of hours the back-up destruction device was operating:	0.019