PLACER COUNTY AIR POLLUTION CONTROL DISTRICT

RULE 233 - BIOMASS BOILERS
(Adopted 10-06-94)

100 GENERAL
 
101 APPLICABILITY: This rule applies to boilers and steam generators which have a potential to emit, as defined in Rule 502, NEW SOURCE REVIEW, 25 tons or more of NOx emissions and which have a primary energy source of biomass consisting of a minimum of 75 percent of the total annual heat input.
 
102 FEDERAL REGULATIONS: Compliance with this rule shall not exempt a person from complying with any federal regulation promulgated pursuant to the Clean Air Act (42 U.S.C. Section 7401 et seq.).
 
103 EXEMPTION, BOILERS, STEAM GENERATORS, AND PROCESS HEATERS: This rule shall not apply to boilers, steam generators, and process heaters subject to Rule 231, INDUSTRIAL, INSTITUTIONAL, AND COMMERCIAL BOILERS, STEAM GENERATORS, AND PROCESS HEATERS.
 
104 EXEMPTION, BIOMASS SUSPENSION BOILERS: This rule shall not apply to existing boilers and steam generators subject to Rule 232, BIOMASS SUSPENSION BOILERS.
 
105 EXEMPTION, MUNICIPAL SOLID WASTE: This rule shall not apply to combustion units whose primary purpose is to burn municipal solid waste, as defined in Section 206.
 
106 EXEMPTION, WASTE HEAT RECOVERY BOILERS: The provisions of this rule do not apply to waste heat recovery boilers used to recover sensible heat from the exhaust of combustion turbines or unfired waste heat recovery boilers used to recover sensible heat from the exhaust of any combustion equipment.
 

200 DEFINITIONS

201 BIOMASS - Any organic material not derived from fossil fuels, such as agricultural crop residues, bark, lawn, yard and garden clippings, leaves, silvicultural residue, tree and brush pruning, wood and wood chips, and wood waste, including these materials when separated from other waste streams. Biomass does not include material containing sewage sludge, industrial sludge, medical waste, hazardous waste, or radioactive waste.

202 BIOMASS BOILER OR STEAM GENERATOR - Any combustion equipment used in any industrial, institutional, or commercial operation designed to burn biomass to produce steam, heat water or other fluids, and/or produce electricity.

203 BRITISH THERMAL UNIT (BTU) - The amount of heat required to raise the temperature of one pound of water from 59F to 60F at one atmosphere.

204 HEAT INPUT - The chemical heat released due to fuel combustion in a boiler, using the higher heating value of the fuel. This does not include the sensible heat of incoming combustion air.
 
205 HIGHER HEATING VALUE (HHV) - The total heat liberated per mass of fuel burned (BTU per pound), when fuel and dry air at standard conditions undergo complete combustion and all resultant products are brought to their standard states at standard conditions. HHV shall be determined by one of the following test methods:

 
206 MUNICIPAL SOLID WASTE - Household, commercial/retail, and/or institutional waste. Household waste includes material discarded by single or multiple residential dwellings, hotels, motels, and other similar permanent or temporary housing establishments or facilities. Commercial/retail waste includes material discarded by stores, offices, restaurants, warehouses, nonmanufacturing activities at industrial facilities, and other similar establishments or facilities. Institutional waste includes material discarded by schools, hospitals, prisons, and government facilities and other similar establishments or facilities.
 
207 NOX EMISSIONS - The sum of nitric oxides and nitrogen dioxide in the flue gas, collectively expressed as nitrogen dioxide (NO2).
 
208 PARTS PER MILLION BY VOLUME (PPMV) - The ratio of the number of gas molecules of a given species, or group, to the number of millions of total gas molecules.
 
209 RATED HEAT INPUT CAPACITY - The heat input capacity, in million BTU per hour, specified on the nameplate of the combustion unit. If the combustion unit has been altered or modified such that its maximum heat input is different than the input capacity specified on the nameplate, and this alteration or modification has been approved by the Air Pollution Control Officer and made a limiting condition of operation, then the new maximum heat input shall be considered as the rated heat input capacity.
 
210 RESPONSIBLE OFFICIAL - An individual with the authority to certify that a source complies with all applicable requirements, including the conditions of permits issued to sources in accordance with Regulation 5, PERMITS. A "responsible official" means one of the following:

 
211 SHUTDOWN - The period of time a unit is cooled from its normal operating temperature to cold or ambient temperature.

212 STARTUP - The period of time a unit is heated from cold or ambient temperature to its normal operating temperature as specified by the manufacturer.

213 UNIT - Any biomass boiler or steam generator as defined in Sections 202.

214 WOOD - Wood, wood residue, bark, or any derivative fuel or residue thereof, in any form, including but not limited to sawdust, sanderdust, wood chips, scraps, slabs, millings, shavings, and processed pellets made from wood or other forest residues.
 

300 STANDARDS

301 LIMITATIONS

 

400 ADMINISTRATIVE REQUIREMENTS
 
401 COMPLIANCE SCHEDULE

 402 OPERATION AND MAINTENANCE PLAN: Any person installing an emission control device as a means of complying with the emission limitations of Section 301 shall submit an Operation and Maintenance Plan with the application for Authority to Construct for the emission control device.

 
403 COMPLIANCE COSTS: A person operating a unit subject to this rule shall bear all expenses associated with compliance with the monitoring and reporting provisions of this rule.
 
404 CERTIFICATION: All reports submitted in accordance with this rule shall be signed by a responsible official who shall certify the truth, accuracy, and completeness of the report.
 

500 MONITORING AND RECORDS
 
501 RECORDKEEPING - A person operating a unit subject to this rule shall keep the following records for each unit:

 
502 CONTINUOUS EMISSIONS MONITORING

 
503 INITIAL COMPLIANCE TEST

 
504 TEST METHODS - A person conducting source tests in accordance with Section 503 shall use the following test methods:

 
505 CORRECTION OF EMISSION CONCENTRATIONS: NOx and CO concentrations may be corrected to 8 percent by volume stack gas O2 instead of 12 percent by volume stack gas CO2 if approved by the Air Pollution Control Officer in a Permit to Operate.

506 DURATION OF RECORDS: All records maintained pursuant to this rule shall be retained for at least two years from date of entry, with the exception that sources subject to the requirements of Rule 507, FEDERAL OPERATING PERMIT PROGRAM, shall retain records at least five years. Records shall be made available for inspection by the Air Pollution Control Officer upon request.