AQ_F_0400061_20210803_CMPL_InspRpt

NORTH CAROLINA DIVISION OF Fayetteville Regional Office
AIR QUALITY Catawba Biogas,LLC
NC Facility ID 0400061
Inspection Report County/FIPS:Anson/007
Date: 08/13/2021
Facility Data Permit Data
Catawba Biogas,LLC Permit 10593/R00
1133 Blewett Falls Rd. Issued 10/16/2019
Lilesville,NC 28091 Expires 9/30/2027
Lat: 34d 58.2580m Long: 79d 54.9294m Class/Status Small
SIC: 1311 /Crude Petroleum&Natural Gas Permit Status Active
NAICS: 211111 /Crude Petroleum and Natural Gas Extraction Current Permit Application(s)Modification
Contact Data Program Applicability
Facility Contact Authorized Contact Technical Contact SIP
Ted Niblock Ted Niblock Ted Niblock NSPS: Subpart Dc
Manager Manager Manager
[phone] [phone] [phone]
Compliance Data 2
Comments:
Inspection Date 08/03/2021
Inspector's Name Mike Thomas
Inspector's Signature: Operating Status Operating
,Q Compliance Status Compliance-inspection
Action Code FCE
Date of Signature: Inspection Result Compliance
Total Actual emissions in TONS/YEAR:
TSP S02 NOX VOC CO PM10 *HAP
No emissions inventory on record.The emissions inventory is due 07/02/2027.
*Highest HAP Emitted inpounds)
Five Year Violation History:None
Date Letter Type Rule Violated Violation Resolution Date
Performed Stack Tests since last FCE:None
Date Test Results Test Method(s) Source(s)Tested

I. DIRECTIONS:
From FRO,head south on Green St toward Maiden Ln. At the traffic circle,take the 2nd exit onto
Gillespie St. Turn right onto W Russell St. Turn left onto Robeson St. Use the left 2 lanes to turn left
onto Raeford Rd and continue for 10 miles. Just past Wagram,turn right onto Old Wire Road(NC
Hwy 144).Turn right onto Old Wire Road(Hwy 144)and go— 11 1/2 miles to Laurel Hill. Turn right
onto US 74 West and continue for—25 miles until you enter Anson County,just after crossing the
Pee Dee River.Continue approximately 6 miles and turn right onto Blewett Falls Road. The location
of the facility is on the left.
II. SAFETY:
Standard DAQ safety equipment required.
III. FACILITY PROCESS DESCRIPTION:
Catawba Biogas,LLC is a greenfield biogas production operation located in Lilesville,Anson
County. The facility will receive used poultry bedding from surrounding farms to use as
feedstock for an anaerobic digester system to produce biogas. The facility will utilize
fermentation to remove nitrogen from the used poultry bedding prior to anaerobic digestion.
During normal operation,the biogas will leave the anaerobic digesters and flow through a fixed
bed media vessel containing activated carbon media known as the Carbon Adsorber Hydrogen
Sulfide.Removal System. The biogas will be upgraded to natural gas quality and injected into
an existing natural gas pipeline. The undesirable(non-methane)constituents of the biogas will
be combusted using a shrouded flare utilizing natural gas as the pilot fuel. The shrouded flare
will be used to combust the biogas on-site during facility startup and at times when the
upgrading system is temporarily out of operation.A natural gas-fired boiler will be used to
produce process heat. A storage bunker capable of storing a five-day supply of used poultry
bedding will be used to receive solid material at the facility. The used poultry bedding will be
treated in three receiving pits that act to homogenize the material. The used poultry bedding
will then enter a biomass liquefaction system where it is mixed with hot water and large
inorganic particles are removed. The used poultry bedding will be heated to minimize the
heating that is needed in the fermenters.The gases from the biomass liquefaction system,
which will include ammonia,will be collected and routed to the natural gas-fired boiler's
intake which will control emissions from the biomass liquefaction system when used as a
thermal oxidizer.
The facility will be staffed full-time,24 hours per day, 7 days per week,by a trained operator.
The operator will monitor operations,including biogas production and the shrouded flare,to
ensure the facility is operating within acceptable operating limits.

IV. PERMITTED EMISSION SOURCES:
ON
ES-1 Natural gas-fired Boiler
N/A N/A
(NSPS) (19.02 mmBtu/hr maximum heat input)
Shrouded Biogas Flare
CD-1 (using natural gas for pilot flame with a
Biogas Production Equipment 28.06 mmBtu/hr maximum heat input)
ES-2
(consisting of three(3)identical 70,629 ft3
fermenters and two(2)identical and and
2.28 million-gallon anaerobic digesters)
Carbon Adsorber
CD-2 Hydrogen Sulfide Removal System*
ES-3 Biomass Liquefaction System N/A Natural gas-fired Boiler
(ID No.ES-1)used as a thermal oxidizer
INSIGNIFICANT/EXEMPT ACTIVITIES:
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i _r,,-`'�.-_->x` .v` '.. 3.-?,_ as, ��.,3 "� `�'- ''i e','S-3 '" g-... �,•. .,�Yr; -5; w "
.�,�.�.z'.,�.-e
IES-1
Two Lean Ammonia Water Pits 2Q .0102(g)(14)(B) Yes No
i (each 3,770 ft3 in volume)
IES-2
Rich Ammonia Water Tank equipped with 2Q .0102(g)(4) Yes No
Activated Carbon Filter
V. INSPECTION SUMMARY:
On 3 August 2021,I Mike Thomas of FRO DAQ conducted a compliance evaluation inspection of Catawba
Biogas,LLC. This facility has not yet been constructed.
VI. NON-COMPLIANCE HISTORY SINCE 2010:
None.
VII. 112R STATUS:
This facility does not store any of the listed chemicals above the threshold quantities,and is not required to maintain
a written risk management plan(RMP).
VIII. COMPLIANCE STATEMENT AND RECOMMENDATION:
Catawba Biogas,LLC appeared to be in compliance with the conditions in their current air permit on 3 August
2021.
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