Strikeout Version December 10, 2009

Placer County APCD 233

- 1 Rules and Regulations 

### RULE 233 BIOMASS BOILERS

Adopted 10

- 6

- 94

( Amended 10

- 11

- 07 , Amended 12

- 10

- 09 )

CONTENTS

100 GENERAL

101 APPLICABILITY

102 FEDERAL REGULATIONS

103 EXEMPTION, BOILERS, STEAM GENERATORS, AND PROCESS HEATERS

104 EXEMPTION, BIOMASS SUSPENSION BOILERS

105 EXEMPTION, MUNICIPAL SOLID WASTE

106 EXEMPTION, WASTE HEAT RECOVERY BOILERS

200 DEFINITIONS

201 BIOMASS

202 BIOMASS BOILER OR STEAM GENERATOR

203 BRITISH THERMAL UNIT

204 CIRCULATING FLUIDIZED BED BOILER

205 CURING STARTUP

20 6 4 HEAT INPUT

20 7 5 HIGHER HEATING VALUE (HHV)

20 8 6 MUNICIPAL SOLID WASTE

20 9 7 NO X EMISSIONS

2 10 08 PARTS PER MILLION BY VOLUME (PPMV)

2 11 09 RATED HEAT INPUT CAPACITY

2 12 1 0 RESPONSIBLE OFFICIAL

2 13 1 1 SHUTDOWN

2 14 12 STARTUP

215 STOKER BOILER

21 3 6 UNIT

21 4 7 WOOD

300 STANDARDS

301 LIMITATIONS

302 STARTUP AND SHUTDOWN PROVISIONS

400 ADMINISTRATIVE REQUIREMENTS

401 OPERATION AND MAINTENANCE PLAN

402 COMPLIANCE COSTS

403 CERTIFICATION

500 MONITORING AND RECORDS

501 RECORDKEEPING

502 CONTINUOUS EMISSIONS MONITORING

503 INITIAL COMPLIANCE TEST

50 4 TEST METHODS

50 5 CORRECTION OF EMISSION CONCENTRATIONSDecember 10, 2009 Strike out Version

Rules and Regulations 233

- 2 Placer County APCD 50 6 DURATION OF RECORDSStrikeout Version December 10, 2009

Placer County APCD 233

- 3 Rules and Regulations This Page Intentionally Left BlankDecember 10, 2009 Strike out Version

Rules and Regulations 233

- 4 Placer County APCD 100 GENERAL

101 APPLICABILITY: This rule applies to stoker and circulating fluidized bed boilers and steam

generators which have a heat input rating of less than 500 million Btu per hour an d a

potential to emit, as defined in Rule 502, NEW SOURCE REVIEW, 25 tons or m ore of NO

x 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 no t 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 was te, as defined in Section 20 6 8

.

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 boile rs 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, silvicultu ral residue, tree and brush

pruning, wood and wood chips, and wood waste, including these materials when separ ated

from other waste streams. Biomass does not include material containing sewage sludge,

industrial sludge, medical waste, hazardous waste, or r adioactive 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 BRITI SH THERMAL UNIT (BTU): The amount of heat required to raise the temperature of

one pound of water from 59 degrees F to 60 degrees F at one atmosphere.

204 CIRCULATING FLUIDIZED BED BOILER: A boiler that burns solid fuel in a moving

suspension of inert materials, forced through upward blowing of air jets, and where the ash

and inerts are captured and recirculated back into the moving fluidized bed.

205 CURING STARTUP: A startup which includes heating the boiler at predetermined rate and

holding tempera ture at several points to allow for insulating materials to cure in the boiler

refractory. A curing startup shall not exceed 96 hours.

20 4 6 HEAT INPUT: The chemical heat released due to fuel combustion in a boiler, using the

higher heating value of th e fuel. This does not include the sensible heat of incoming

combustion air.Strikeout Version December 10, 2009

Placer County APCD 233

- 5 Rules and Regulations 20 5 7 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

al l resultant products are brought to their standard states at standard conditions. HHV shall

be determined by one of the following test methods:

20 5 7 .1 ASTM E711 for biomass ; or

20 5 7 .2 ASTM D 240

- 87 or ASTM D 2382

- 82 for liquid hydrocarbon fuels; or

20 5 7 .3 ASTM D 1826

- 88 or ASTM D 1945

- 81 in conjunction with ASTM D 3588

- 89 for

gaseous fuels.

20 6 8 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, non

- manufacturing activities at industrial facilitie s, and other similar

establishments or facilities. Institutional waste includes material discarded by schools,

hospitals, prisons, and government facilities and other similar establishments or facilities.

20 7 9 NO X EMISSIONS: The sum of nitric oxides and nitrogen dioxide in the flue gas, collectively

expressed as nitrogen dioxide (NO 2 ).

2 0 8 10 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.

2 09 11 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.

2 10 12 RESPONSIBLE OFFICIAL: An indiv idual with the authority to certify that a source

complies with all applicable requirements, including the conditions of permits issued to

sources in accordan ce with Regulation 5, PERMITS. A "responsible official" means one of the

following:

2 1 0 1 2 .1 For a corporation, a president, secretary, treasurer, or vice

- president of the

corporation in charge of a principal business function, or any other person who

performs similar policy or decision

- making functions for the corporation, or a duly

authorized represe ntative of such person if the representative is responsible for the

overall operation of one or more manufacturing, production, or operating facilities

applying for or subject to a permit and either:

2 1 1 1 2 .1.1 The facilities employ more than 250 persons or have gross annual sales

or expenditures exceeding $25 million (in second quarter 1980 dollars); or

2 1 1 1 2 .1.2 The delegation of authority to such representative is approved in

advance by the Air Pollution Control Officer;

2 1 0 1 2 .2 For a partnership or sole proprietorship, a general partner or the proprietor,

respectively; or

2 1 0 1 2 .3 For a municipality, state, federal, or other public agency, either a principal

executive officer or a ranking elected official; orDecember 10, 2009 Strike out Version

Rules and Regulations 233

- 6 Placer County APCD

2 1 0 1 2 .4 For an acid rain unit subject to Title IV (Acid Deposition Control) of the Clean Air

Act, the "responsible official" is the designated representative of that unit for any

purposes under Title IV and Rule 507, FED ERAL OPERATING PERMITS

PROGRAM.

21 1 3 SHUTDOWN: A shutdown starts when fuel feed is curtailed and the unit begins cooling from

the unit’s normal operating temperature, as specified by the manufacturer, and ends when

the unit is 150 degrees F steam flow is zero or less for at least one hour

, or 24 hours has

elapsed since the start of the shutdown , or fuel feed resumes , whichever occurs first.

21 2 4 STARTUP: Th e period of time a unit is heated to the normal operating temperature, as

specified by the manufacturer , following a shutdown

. A normal startup shall not exceed 24

hours. A curing startup shall not exceed 96 hours.

21 3 5 STOKER BOILER: A boiler that burns solid fuel on a stationary or moving grate located at

the bottom of the furnace, and where the fuel is supplied and ash removed continuously.

21 4 6 UNIT: Any biomass boiler or steam generator as defined in Sections 202.

21 5 7 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:

301.1 No person shall allow the discharge of NO

x and CO emissions into the atmosphere

from a biomass boiler or steam generator in excess of the following standards,

whichever is less stringent, excluding startup and shutdown con ditions:

a. An exhaust concentration of 115 parts per million (ppmv) corrected to 12 percent

by volume stack gas carbon dioxide (CO 2 ) on a three

- hour average dry basis.

b. 50 percent of the uncontrolled NO

x emission concentration in the exhaust gas

stream. A corresponding controlled concentration limit, expressed in ppmv

corrected to 12 percent by volume stack gas CO 2 on a three

- hour average dry

basis, shall be established in a Permit to Operate for the purp ose of

demonstrating continuous compliance with the 50 percent emission reduction.

Type of Boiler 

### NOx CO

Circulating Fluidized Bed

(<500 MMBtu/hour) 115

ppmv corrected to

12% CO2

(3 hour rolling

average) 400

ppmv corrected to

12% CO2

(3 hour rolling

average)

Stoker

(<500 MMBtu/hour) 115

ppmv corrected to

12% CO2

(3 hour rolling

average) 1000

ppmv corrected to

12% CO2

(3 hour rolling

average)Strikeout Version December 10, 2009

Placer County APCD 233

- 7 Rules and Regulations 302 STARTUP AND SHUTDOWN PROVISIONS

302.1 The emission limits of Section 301.1 shall not apply during startup or shutdown

provided the following requirements are met:



### a. 302.1.1 CO 2 emissions are 10 percent or less by volume stack gas on a one

- hour

average dry basis.



### b. Emission units subject to this rule shall have mass emission limitations for

NOx and CO applicable to startup and shutdown established in permit(s) to

operate by January 1, 2008, for existing facilities or in the initial Authority to

Construct for new facilities.

302.1.2 During startup and shutdown, the mass emissions of NOx and CO shall not

exceed the levels shown below : . The block averaging time starts at the

beginning of either the startup or the shutdown.

Type of Boiler 

### NOx CO

Circulating Fluidized Bed

(<500 MMBtu/hour) 35

pounds per hour

(24 hour block

average) 56

pounds per hour

(24 hour block

average)

35

pounds per hour

(72 hour block

average during

curing of

refractory startup ) 56

pounds per hour

(72 hour block

average during

curing startup of

refractory )

Stoker

(<500 MMBtu/hour) 37.6

pounds per hour

(3 hour rolling

average) 170

pounds per hour

(3 hour rolling

average)

302.1.3. A normal startup shall not exceed 24 hours. A startup which involves

curing of refractory shall not exceed 96 hours.

c. Emission units subject to this rule shall have a limit on the number of startups and

shutdowns in a calendar year as a permit condition.December 10, 2009 Strike out Version

Rules and Regulations 233

- 8 Placer County APCD 400 ADMINISTRATIVE REQUIREMENTS

401 OPERATION AND MAINTENANCE PLAN: Any person installing an emission control device

as a means of complying with the emission limitations of Section 301 s hall submit an

Operation and Maintenance Plan with the application for Authority to Construct for the

emission control device.

401.1 The Operation and Maintenance Plan shall specify:

a 401.1.1

. Operation and maintenance procedures that will demonstrate continuous

operation of the emission control device during emission

- producing

operations; and

401.1.2 b. Records that must be kept to document the operation and maintenance

procedures.

401.1.3. Each source must provide to the District a description of th e actions that

will be taken to minimize emissions during startup and shutdown events.

401.2 The records must comply with Sections 501, 502, and 504.

401.3 The Operation and Maintenance Plan shall be implemented upon approval by the Air

Pollution Control Officer.

4 01.4 Subsequent to the construction of any emission control device used for

demonstrating compliance with the emission limitation of Section 301, a n Operation

and Maintenance Plan shall be submitted or resubmitted in conjunction with any

changes in the procedures addressed in the plan, or upon the request of the Air

Pollution Control Officer.

402 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.

403 CERTIFICATION: All reports submitted in accordance with this rule shall be signed by a

resp onsible 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:

501.1 Calendar date of record.

501.2 Number of hours the unit is operated during each day.

501.3 Boiler load.

501.4 Fuel types, including supplementary gaseous or liquid fuels.

501.5 Duration of startups and shutdowns.

501.6 Type and duration of maintenance and repairs.

501.7 Results of compliance tests.Strikeout Version December 10, 2009

Placer County APCD 233

- 9 Rules and Regulations

501.8 Three

- hour average NO x emission concentration (expressed as NO 2 and

corrected to 12 percent by volume stack gas CO 2 ).

501.9 Three

- hour average CO emission concentration (corrected to 12 percent by

vol ume stack gas CO 2 ).

501.10 Startup and shutdown emissions reco r ds using averaging periods as required in

Section 302.1.

501.1 1 0 Identification of time periods during which NO x and CO emission limitations are

exceeded, the reason for the exceedance, and a description of corrective action

taken.

501.1 2 1 Identification of time periods during which operating condition and pollutant

emission data were not obtained, the reason for n ot obtaining this information, and a

description of corrective action taken.

501.13 If zero steam flow is used to determine the end of a shutdown, then steam flow must

be recorded.

502 CONTINUOUS EMISSIONS MONITORING

502.1 A person operating a unit subject to this rule shall install, calibrate, operate, and

maintain a Continuous Emissions Monitoring System (CEMS) in accordance with

applicable requirements of Appendices B and F of Title 40 Code of Federal

Regulations Part 60 (40 CFR 60).

502.2 The CE MS shall include equipment that measures and records the following:

502.2.1 a

. Continuous exhaust gas NO x and CO concentrations corrected to 12

percent by volume stack gas CO 2 dry basis.

502.2.2 b

. Average NO x and CO concentrations calculated on a three

- hour average

basis.

502.3 A person operating a CEMS shall submit an excess emissions and monitoring

systems performance report to the Air Pollution Control Officer within 30 days after

the end of each calendar quarter in accordance with 40 CFR 60, Section 60.7(c) and

(d) and Section 60.13.

502.4 The enhanced monitoring requirements of Sections 113 and 114 of the Federal

Clean Air Act shall take precedence over the requirements of this Section for facilities

sub ject to Rule 507, FEDERAL OPERATING PERMIT PROGRAM.

503 INITIAL COMPLIANCE TEST

503.1 An initial compliance test shall be conducted within 60 days of achieving the

maximum firing rate at which the unit will be operated, but not later than 180 days

after initial startup.

503.1.1 Each emission test run shall be conducted while the unit is operated within

10% of the maximum steady

- state steam production rate. No emission

test shall be conducted during startup, shutdown, or under breakdown

conditions for the purpose of the initial compliance test.December 10, 2009 Strike out Version

Rules and Regulations 233

- 10 Placer County APCD

503.1.2

. The initial compliance test shall be conducted for NOx and CO using the

test methods specified in Sectio n 504.

503. 2 At least sixty (60) days prior to the initial compliance test, a written test plan detailing

the test methods and procedures to be used shall be submitted for approval by the

Air Pollution Control Officer. The plan shall cite the test methods to be used for the

determination of compliance with the emission limitations of this rule. The plan shall

provide the proposed procedures for the characterization of the representative

biomass materials to be burned during testing.

50 4 CORRECTION OF EMISSION CONCENTRATIONS: NO

x and CO concentrations may be

corrected to 8 percent by volume stack gas O 2 instead of 12 percent by volume stack gas

CO 2 if approved by the Air Pollution Control Officer in a Permit to Operate.

50 5 3 TEST METHODS: A person conducting source tests shall use the following test methods:

50 5 3 .1 Nitrogen Oxides (NO X ): ARB Test Method 100, Title 17, CCR, Section 94114,

Procedures for Continuous Emission Stack Sampling , or EPA Test Met hod 7E,

40 CFR 60, Appendix A. A violation determined by any of these test methods shall

constitute a violation of this rule.

50 5 3 .2 Carbon Monoxide (CO): ARB Test Method 10, Title 17, CCR, Section 94109,

Determination of Carbon Monoxide Emissions from S tationary Sources , or ARB Test

Method 100, or EPA Test Method 10, 40 CFR 60, Appendix A. A violation determined

by any of these test methods shall constitute a violation of this rule.

50 5 3 .3 Carbon Dioxide (CO 2 ): ARB Test Method 100, Title 17, CCR, Section 94114,

Procedures for Continuous Emission Stack Sampling , or EPA Test Method 3A,

40 CFR 60, Appendix A.Strikeout Version December 10, 2009

Placer County APCD 233

- 11 Rules and Regulations 50 6 4 DURATION OF R ECORDS : 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 reta in records

at least five years. Records shall be made available for inspection by the Air Pollution Control

Officer upon request.