# PROPOSED May 19, 2011

4307 - 1 Proposed Amendments to Rule 4307 RULE 4307 BOILERS, STEAM GENERATORS, AND PROCESS HE ATERS – 2.0

MMBtu/hr to 5.0 MMBtu/hr (Adopted December 15, 2005 ; Amended April 20, 2006; Amended October 16, 2008, Amended [ rule adoption date ])

1.0 Purpose

The purpose of this rule is to limit emissions of o xides of nitrogen (NOx), carbon monoxide (CO), oxides of sulfur (SO 2 ), and particulate matter 10 microns or less (PM10) from boilers, steam generators, and process heaters

.

2.0 Applicability

This rule applies to any gaseous fuel or liquid fue l fired boiler, steam generator, or process heater with a total rated heat input of 2.0 million Btu per hour (MMBtu/hr) up to and including 5.0 MMBtu/hr.

3.0 Definitions

3.1 Air Pollution Control Officer (APCO): as defin ed in Rule 1020 (Definitions).

3.2 Air Resources Board (ARB): as defined in Rule 1020 (Definitions).

3.3 Annual Heat Input: the actual, total heat inpu t of fuels burned by a unit in a calendar year, as determined from the higher heatin g value and cumulative annual usage of each fuel.

3.4 Atmospheric Unit: any unit with a non-sealed c ombustion chamber in which the combustion air and flue gases are drawn through the unit without the use of a fan.

3.5 Boiler or Steam Generator: any external combus tion equipment fired with any fuel used to produce hot water or steam.

3.6 British Thermal Unit (Btu): the amount of heat required to raise the temperature of one pound of water from 59°F to 60°F at one atmo sphere.

3.7 California Public Utility Commission (PUC) Qual ity Natural Gas: any gaseous fuel, gas-containing fuel where the sulfur content is no more than one-fourth (0.25) grain of hydrogen sulfide per one hundred (1 00) standard cubic feet and no more than five (5) grains of total sulfur per one h undred (100) standard cubic feet. PUC quality natural gas also means high methane gas of at least 80% methane by

volume.

# PROPOSED May 19, 2011

4307 - 2 Proposed Amendments to Rule 4307 3.8 Certified Unit or Certified Retrofit Control Te chnology: any unit, any control technology, or any burner and ancillary controls or blowers, that has been demonstrated to comply with the emissions limits of this rule and which has been approved by the APCO pursuant to Section 9.0 of thi s rule.

3.9 Dryer: any unit in which material is dried in direct contact with the products of

combustion.

3.10 US Environmental Protection Agency (EPA): the United States Environmental Protection Agency or any person authorized to act o n its behalf.

3.11 Gaseous Fuel: any fuel which is a gas at Stan dard Conditions.

3.12 Heat Input: the heat (hhv basis) released due to fuel combustion in a unit, not including the sensible heat of incoming combustion air and fuel.

3.13 Higher Heating Value (hhv): the total heat li berated per mass of fuel burned (expressed as Btu per pound), when fuel and dry air at standard conditions undergo complete combustion and all resulting produ cts are brought to their

standard states at standard conditions.

3.14 Humidifier: a device or system that uses an a ir stream heated by a direct contact combustion process in combination with a water spra y to produce warm air of high humidity in order to maintain or increase the moisture content of the material being processed or conveyed by the air str eam.

3.15 Liquid Fuel: any fuel which is a liquid at St andard Conditions.

3.16 NOx Emissions: the sum of oxides of nitrogen expressed as NO 2 in the flue gas.

3.17 NOx Exhaust Control: a device or technique us ed to treat a unit’s exhaust combustion gas to reduce NOx emissions. Such a devi ce or technique includes, but is not limited to, selective catalytic reductio n or nonselective catalytic

reduction.

3.18 Parts Per Million by Volume (ppmv): as define d in Rule 1020 (Definitions).

3.19 Process Heater: any combustion equipment fire d with liquid and/or gaseous fuel and which transfers heat from combustion gases to w ater or process streams. This definition excludes: kilns or ovens used for drying , baking, cooking, calcining, or vitrifying; and unfired waste heat recovery heaters used to recover sensible heat from the exhaust of combustion equipment.

# PROPOSED May 19, 2011

4307 - 3 Proposed Amendments to Rule 4307 3.20 Qualified Technician: a stationary source emp loyee or any personnel contracted by a stationary source operator who has a documente d training and a demonstrated experience performing tune-ups on a unit to the sat isfaction of the APCO. The documentation of tune-up training and experience sh all be made available to the APCO upon request.

3.21 Rated Heat Input (expressed as million Btu per hour): the heat input capacity specified on the nameplate of the unit. If the uni t has been physically modified such that its maximum heat input differs from what is specified on the nameplate, the modified maximum heat input shall be considered as the rated heat input and made enforceable by Permit to Operate.

3.22 Re-ignition: the relighting of a unit after a n unscheduled and unavoidable interruption or shut off of the fuel flow or electr ical power, for a period of less than 30 minutes, due to reasons outside the control of the operator.

3.23 School: any public or private school used for the purpose of education and instruction of school pupils in Kindergarten throug h Grade 12, but does not include any private school in which education and i nstruction are primarily conducted in private homes.

3.24 Shutdown: the period of time during which a u nit is taken from an operational to a non-operational status by allowing it to cool dow n from its operating temperature to a cold or ambient temperature as the fuel supply is turned off. A

unit is considered in shutdown status when the fuel supply to the unit is turned off for a continuous period of at least 30 minutes.

3.25 Solid Fuel: any fuel which is a solid at Stan dard Conditions.

3.26 Standard Conditions: as defined in Rule 1020 (Definitions).

3.27 Start-up: the period of time during which a u nit is brought from a shutdown status to its operating temperature and pressure.

3.28 Stationary Source: as defined in Rule 2201 (N ew and Modified Stationary Source Review Rule).

3.29 Tree Nut Pasteurizer: a unit, designed to rem ove pathogens from tree nuts, which is operated at a tree nut processing facility subje ct to any part of Title 7 Section 900 through 999 of the Code of Federal Regulations (7 CFR 900 through 7 CFR 999).

3.30 3.29 Unit: any boiler, steam generator or pr ocess heater as defined in this rule.

# PROPOSED May 19, 2011

4307 - 4 Proposed Amendments to Rule 4307 4.0 Exemptions

This rule shall not apply to:

4.1 Solid fuel fired units.

4.2 Dryers and glass melting furnaces.

4.3 Kilns, humidifiers, and smelters where the pro ducts of combustion come into

direct contact with the material to be heated.

4.4 Unfired or fired waste heat recovery boilers th at are used to recover or augment

heat from the exhaust of combustion turbines or int ernal combustion engines.

4.5 Units used at a school. On and after July 1, 2 015, units used at a school shall comply with all applicable requirements of this rul e.

4.6 The requirements of Sections 5.1 shall not appl y to a unit when burning any fuel other than PUC quality natural gas during a PUC qua lity natural gas curtailment provided all of the following conditions are met:

4.6.1 Fuels other than PUC quality natural gas are burned no more than 168 cumulative hours in a calendar year plus 48 hours p er calendar year for equipment testing, as limited by Permit to Operate or Permit-Exempt Equipment Registration.

4.6.2 NOx emission shall not exceed 150 ppmv or 0.2 15 lb/MMBtu. Demonstration of compliance with this limit shall b e made by either source testing, continuous emission monitoring system (CEM S), an APCO approved Alternate Monitoring System, or an APCO ap proved portable NOx analyzer.

5.0 Requirements

All ppmv emission limits specified in this section are referenced at dry stack gas conditions and 3.00 percent by volume stack gas oxy gen. Emission concentrations shall be corrected to 3.00 percent oxygen in accordance w ith Section 8.1.

5.1 NOx and CO Emission Limits

5.1.1 Except for units subject to either Section 5.1.2 or Section 5.2, no unit shall be operated unless it is certified, according to Se ction 9.0, or source tested in accordance with the test methods in Section 6.2, to comply with the applicable emission limits specified in Table 1 and Table 2.

# PROPOSED May 19, 2011

4307 - 5 Proposed Amendments to Rule 4307 Table 1 NOx and CO limits

Type of Unit NOx Limit CO Limit (ppmv)

Gaseous Fuel-Fired Unit 30 ppmv or

0.036 lb/MMBtu 400

Liquid Fuel-Fired Unit 40 ppmv or

0.052 lb/MMBtu 400

Table 2 NOx and CO limits for New and Replacement U nits

I. Atmospheric Units

Type of Unit NOx Limit CO Limit (ppmv) Effective Date

A. A new or replacement unit that is not

included in Section I. B. 12 ppmv or

0.014 lb/MMBtu 400 Upon Installation

of a new or replacement unit

on and after January 1, 2010 B. A new or replacement unit that is one of the following:

1. a unit used at a school; or

2. a unit in an oilfield or refinery; or

3. a glycol reboiler; or

4. a unit with a heat input greater than

1.8 billion Btu but less than 5.0 billion Btu per calendar year 12 ppmv or

0.014 lb/MMBtu 400 Upon Installation

of a new or replacement unit

on and after January 1, 2016

II. Non-Atmospheric Units

Type of Unit NOx Limit CO Limit (ppmv) Effective Date

A. A new or replacement unit that is not

included in Section II. B. 9 ppmv or

0.011 lb/MMBtu 400 Upon Installation

of a new or replacement unit

on and after January 1, 2010 B. A new or replacement unit that is one of the following:

5. a unit used at a school; or

6. a unit in an oilfield or refinery; or

7. a glycol reboiler; or

8. a unit with a heat input greater than

1.8 billion Btu but less than 5.0 billion Btu per calendar year 9 ppmv or

0.011 lb/MMBtu 400 Upon Installation

of a new or replacement unit

on and after January 1, 2016

# PROPOSED May 19, 2011

4307 - 6 Proposed Amendments to Rule 4307 5.1.2 Tree nut pasteurizers shall be fired exclusiv ely on PUC quality natural gas.

5.1.2.1 All tree nut pasteurizers shall be operated and maintained according to manufacturer’s specifications or APCO- approved alternative procedures.

5.1.2.2 Operation and maintenance records and manuf acturer’s specifications/APCO-approved alternative procedures shall be

maintained in accordance with Section 6.1.5.

5.1.2.3 During PUC quality natural gas curtailments , operators of tree nut pasteurizers shall abide by the provisions of S ection 4.6, if the unit is operated during the curtailment.

5.2 Operators shall meet the following requirements as applicable.

5.2.1 Until June 30, 2015, for each existing atmosp heric unit operated in an oilfield or refinery; each glycol reboiler; or each unit limited to no more than 5.0 billion Btu per calendar year heat input p ursuant to a Permit to Operate or Permit-Exempt Equipment Registration, th e operator shall comply with Section 5.5.2, Section 7.3, Section 7.4 , and either Section 5.2.1.1, 5.2.1.2, or 5.2.1.3.

5.2.1.1 Tune the unit at least twice per calendar y ear, (from four to eight months apart) using a qualified technician in accor dance with the procedure described in Rule 4304 (Equipment Tuning Procedure for Boilers, Steam Generators, and Process Heaters) . If the unit does not operate throughout a continuous six-month period within a calendar year, only one tune-up is required for t hat calendar year. No tune-up is required for any unit that is not operated during that calendar year; this unit may be test fi red to verify availability of the unit for its intended use, but once the test firing is completed the unit shall be shutdown; or

5.2.1.2 Operate the unit in a manner that maintains exhaust oxygen concentrations at less than or equal to 3.00 percen t by volume on a dry basis; or

5.2.1.3 Certify the unit according to Section 9.0 t o comply with the applicable emission requirements of Section 5.1 Tab le 1.

# PROPOSED May 19, 2011

4307 - 7 Proposed Amendments to Rule 4307 5.2.2 On and after July 1, 2015, for each unit limi ted to no more than 1.8 billion Btu per calendar year heat input pursuant to a Perm it to Operate or PermitExempt Equipment Registration, the operator shall c omply with Section 5.5.2, Section 7.3, Section 7.4, and either Section 5.2.1.1, 5.2.1.2, or

5.2.1.3.

5.2.3 On and after July 1, 2015, for each existing atmosp heric unit in an oilfield or refinery; each glycol reboiler; or each unit with a heat input greater than 1.8 billion Btu to less than 5.0 billi on Btu per calendar year, the operator shall comply with the applicable emiss ion requirements of Section 5.1 Table 1. The operator shall comply wit h the compliance requirements and deadlines specified for Group 3 un its in Section 7.1

Table 3.

5.3 Particulate Matter Control Requirements

5.3.1 To limit particulate matter emissions, an ope rator shall comply with one of the following requirements:

5.3.1.1 On and after July 1, 2015, operators shall fire units exclusively on PUC quality natural gas, commercial propane, but ane, or liquefied petroleum gas, or a combination of such g ases; or

5.3.1.2 On and after July 1, 2015, operators shall limit fuel sulfur content to no more than five (5) grains of total su lfur per one hundred (100) standard cubic feet; or

5.3.1.3 On and after July 1, 2015, operators shall install and properly operate an emission control system that reduces SO 2 emissions by at least 95% by weight; or limit exhaust SO 2 to less than or equal to 9 ppmv corrected to 3.0% O 2

.

5.3.2 On and after July 1, 2015, liquid fuel shall be used only during a PUC quality natural gas curtailment period provided it contains no more than 15 ppm sulfur as determined by the test method spec ified in Section 6.2.7. An operator shall comply with the recordkeeping req uirement of Section 6.1.3. In lieu of testing the sulfur content of li quid fuel, an operator may demonstrate compliance with the 15 ppm sulfur conte nt by obtaining a copy of the fuel sulfur content specification data from the fuel

manufacturer or vendor.

# PROPOSED May 19, 2011

4307 - 8 Proposed Amendments to Rule 4307 5.4 Start-Up and Shutdown Requirements

The applicable emission limits of Sections 5.1 and 5.2.1.2 shall not apply during start-up or shutdown provided an operator complies with the requirements specified below.

5.4.1 For units not equipped with a NOx exhaust con trol, the duration of each start-up and each shut down shall not exceed one ho ur, except as provided

in Section 5.4.4.

5.4.2 For units equipped with a NOx exhaust control , the duration of each start-up and each shut down shall not exceed two ho urs, except as provided in Section 5.4.4.

5.4.3 The emission control system shall be in opera tion and emissions shall be minimized insofar as technologically feasible durin g start-up or shutdown.

5.4.4 Notwithstanding the requirements of Section 5 .4.1 or Section 5.4.2, t The APCO, ARB, and EPA may approve a longer start-up or shutdown duration than the duration specified in Section 5.4 .1 or 5.4.2 (as applicable), if an operator submits an application for a Permit to Operate or Permit-Exempt Equipment Registration which provi des a justification for the requested additional duration.

5.4.4.1 The maximum allowable duration of start-up or shutdown will be determined by the APCO, ARB, and EPA.

5.4.4.2 At a minimum, a justification for increased start-up or shutdown duration shall include the following:

5.4.4.2.1 A clear identification of the control tec hnologies or

strategies to be utilized; and

5.4.4.2.2 A description of what physical conditions prevail

during start-up or shutdown periods that prevent th e controls from being effective; and

5.4.4.2.3 A reasonably precise estimate as to when the

physical conditions will have reached a state that allows for the effective control of emissions; and

5.4.4.2.4 A detailed list of activities to be perfo rmed during

start-up or shutdown and a reasonable explanation for the length of time needed to complete each activity; and

# PROPOSED May 19, 2011

4307 - 9 Proposed Amendments to Rule 4307 5.4.4.2.5 A description of the material process flo w rates and

system operating parameters, etc., the operator plans to evaluate during the process optimization; and an explanation of how the activities and proces s flow affect the operation of the emissions control equipment; and

5.4.4.2.6 Basis for the requested additional durati on of startup or shutdown.

5.4.5 Permit to Operate (PTO) changes solely to inc lude start-up or shutdown conditions may be exempt from Best Available Contro l Technology (BACT) and emission offset requirements if the PTO changes meet the requirements of Rule 2201 (New or Modified Stationa ry Source Review Rule) Section 4.2 (BACT Exemptions) and Rule 2201 S ection 4.6 (Offset Exemptions).

5.5 Monitoring Provisions

5.5.1 For units subject to the emission limits of S ection 5.1 the operator shall;:

5.5.1.1 Monitor, at least once a month, the operati onal characteristics recommended by the manufacturer and approved by the APCO;

and

5.5.1.2 Tune the unit at least twice per calendar y ear, (from four to eight months apart) using a qualified technician in accordance with the procedure described in Rule 4304 (Equipmen t Tuning Procedure for Boilers, Steam Generators, and Proces s Heaters). If the unit does not operate throughout a continuou s six-month period within a calendar year, only one tune-up is required for that calendar year. No tune-up is required for any unit that is not operated during that calendar year; this unit m ay be test fired to verify availability of the unit for its in tended use, but once the test firing is completed the unit shall be shutdown. In lieu of tuning the unit, operators shall monitor th e emissions with a portable NOx analyzer and adjust the unit’s opera ting parameters accordingly to assure compliance with th e emission

limits of this rule.

5.5.2 The operator of any unit limited to the annua l heat input specified in

Section 5.2.1 or Section 5.2.2 shall install and ma intain an operational non-resettable, totalizing mass or volumetric flow meter in each fuel line

to each unit. Volumetric flow measurements shall be periodically compensated for temperature and pressure. A master meter, which

# PROPOSED May 19, 2011

4307 - 10 Proposed Amendments to Rule 4307 measures fuel to all units in a group of similar un its, may satisfy these requirements if approved by the APCO in writing. T he cumulative annual fuel usage may be verified from utility serv ice meters, purchase or tank fill records, or other acceptable methods, as approved by the

APCO.

5.5.3 Monitoring SOx Emissions

5.5.3.1 Operators complying with Section 5.3.1.3 by installing and operating a control device with 95% SOx reduction s hall propose the key system operating parameters and fre quency of the monitoring and recording. The monitoring optio n proposed shall be submitted for approval by the APCO.

5.5.3.2 Operators complying with Sections 5.3.1.1 or 5.3.1.2 shall provide an annual fuel analysis to the District unl ess a more frequent sampling and reporting period is included in the Permit To to Operate or Equipment Registration condition. Sulfur analysis shall be performed in accordance with the test methods

in Section 6.2.

5.6 Compliance Determination

5.6.1 For the purposes of certification, the operat or of any unit shall have the option of demonstrating compliance with either the applicable heat input emission limits (lb/MMBtu) or the concentration emi ssion limits (ppmv) specified in Section 5.1. The emission limits sele cted to demonstrate compliance shall be specified in the Permit to Oper ate or Permit-Exempt Equipment Registration. The emission limit selecte d in Section 5.1 shall also be specified in the source test proposal pursu ant to Rule 1081 (Source Sampling).

5.6.2 All emissions measurements shall be made with the unit operating either at conditions representative of normal operations or c onditions specified in the Permit to Operate or Permit-Exempt Equipment Re gistration.

5.6.3 Unless otherwise specified in the Permit to O perate or Permit-Exempt Equipment Registration no determination of complian ce shall be established within two hours after a continuous per iod in which fuel flow to the unit is shut off for 30 minutes or longer, o r within 30 minutes after a re-ignition as defined in Section 3.0.

# PROPOSED May 19, 2011

4307 - 11 Proposed Amendments to Rule 4307 5.6.4 Notwithstanding the requirements of Section 5 .6.3, for units with a cyclical firing period that routinely interrupts fu el flow as part of its normal operation, source testing may commence soone r than specified in Section 5.6.3 and continue through its normal cycli cal firing period.

5.6.5 For emissions source testing performed pursua nt to Section 6.3.1 for the purpose of determining compliance with an applicabl e standard or numerical limitation of this rule, the arithmetic a verage of three (3) 30- consecutive-minute test runs shall apply. If two ( 2) of three (3) runs are above an applicable limit the test cannot be used t o demonstrate compliance with an applicable limit.

6.0 Administrative Requirements

6.1 Recordkeeping

The records required by Sections 6.1.1 through 6.1. 5 6.1.4 shall be maintained, and retained for five calendar years., and The reco rds shall be made available to the APCO, ARB, and EPA upon request. Failure to ma intain records or

information contained in the records that demonstra tes noncompliance with the applicable requirements of this rule shall constitu te a violation of this rule.

6.1.1 The operator of any unit limited to the annua l heat input specified in

Section 5.2.1 or Section 5.2.2 shall record the amo unt of fuel use, at least once a month for each unit, or for a group of units as specified in Section 5.5.2. On and after the compliance schedule specified in Section 7.0 Table 3, any unit that exceeds the annual heat input limit specified in Section 5.2.1 or Section 5.2.2, shall be brought in to full compliance with this rule as specified in Section 7.3.

6.1.2 The operator of any unit subject to the appli cable requirements of Sections 5.2.1.1, 5.5.1.1, and 5.5.1.2 shall maintain record s to verify that tune-up and monitoring of the operational characteristics o f the unit have been performed.

6.1.3 Operators who operate a unit on liquid fuel d uring PUC-quality natural gas curtailment period shall record the sulfur content of the fuel, amount of fuel used, and duration of the natural gas curtailm ent period.

6.1.4 The operator performing start-up or shutdown of a unit shall keep records of the duration of start-up or shutdown that exceed the applicable requirements of Sections 5.4.1 or 5.4.2.

# PROPOSED May 19, 2011

4307 - 12 Proposed Amendments to Rule 4307 6.1.5 Tree Nut Pasteurizers Operations and Maintena nce Records

The operator of a tree nut pasteurizer shall mainta in operation and maintenance records that demonstrate operation of t he tree nut pasteurizer is within the limits of the manufacture r’s specification and maintenance according to manufacturer’s recommendat ion or APCOapproved alternative procedures.

6.1.5.1 Operations records shall be maintained for the days on which the tree nut pasteurizer is operated.

6.1.5.2 The operator shall keep maintenance records that verify that maintenance was performed in accordance with manufa cturer’s specifications or APCO-approved alternative procedu res.

6.1.5.3 A copy of the manufacturer’s operation spec ifications and maintenance instruction manual or APCO-approved alt ernative procedures shall be maintained on-site during norma l business

hours.

6.1.5.4 If the manufacturer’s operation specificati ons or maintenance instruction manual are not available, the operator of a tree nut pasteurizer shall submit alternative operation or m aintenance procedures for approval by the APCO by [6 months af ter rule amendment date] or as part of the Authority to Cons truct application, whichever is later.

6.1.5.5 The operator of a tree nut pasteurizer shal l maintain records that demonstrate that the fuel used to fire the pasteuri zer is PUC quality natural gas.

6.2 Test Methods

The following test methods shall be used unless oth erwise approved by the APCO, ARB, and EPA.

6.2.1 Oxides of nitrogen (ppmv) – EPA Method 7E, or ARB Method 100.

6.2.2 Carbon monoxide (ppmv) – EPA Method 10, or AR B Method 100.

6.2.3 Stack gas oxygen – EPA Method 3 or 3A, or ARB Method 100.

6.2.4 NOx Emission Rate (Heat Input Basis) – EPA Me thod 19.

6.2.5 Stack gas velocities – EPA Method 2.

# PROPOSED May 19, 2011

4307 - 13 Proposed Amendments to Rule 4307 6.2.6 Stack gas moisture content – EPA Method 4.

6.2.7 Sulfur content of liquid fuel – American Soci ety for Testing and Materials (ASTM) D 6920-03 or ASTM D 5453-99.

6.2.8 Determination of total sulfur as hydrogen sul fide (H2S) content – EPA Method 11 or EPA Method 15, as appropriate.

6.2.9 Oxides of sulfur – EPA Method 6C, EPA Method 8, or ARB Method 100.

6.2.10 The SOx emission control system efficiency s hall be determined using the following:

% Control Efficiency = [ (C SO2, inlet
– C SO2, outlet ) / C SO2, inlet ] X 100

Where:

C SO2, inlet = concentration of SOx (expressed as SO 2 ) at the inlet side of the SOx emission control system, in lb/dscf

C SO2, outlet = concentration of SOx (expressed as SO 2 ) at the outlet side of the SOx emission control system, in lb/dscf

6.3 Compliance Demonstration

6.3.1 The operator shall conduct an initial source test at the time of installation

and/or modification for each non-certified unit or each non-certified retrofit control technology to demonstrate complian ce with the applicable

certification emission limits in Section 5.1. Unit s demonstrating compliance are eligible for certification under the provisions of Section

9.0.

6.3.2 Source testing of a certified unit or certifi ed retrofit control technology, as defined in Section 3.0, is not required provided th e operator complies with the requirements of Sections 6.3.2.1 and 6.3.2.2.

6.3.2.1 Operate the unit within range of operating parameters specified in the APCO-approved certification document.

6.3.2.2 Operate and maintain the unit in accordance with the manufacturer’s instructions and conditions specifie d in the APCO-approved certification document.

# PROPOSED May 19, 2011

4307 - 14 Proposed Amendments to Rule 4307 6.3.3 A unit or retrofit control technology that lo ses its certification status shall be source tested within 60 days after the date the certification status is lost to demonstrate compliance with the emission limits of this rule. The manufacturer or operator may request re-certificati on of a unit or retrofit control technology that lost its certification stat us provided the provisions

of Section 9.0 are met.

6.4 Equipment Registration Requirement

Except for units that require a Permit to Operate p ursuant to Rule 2020 (Exemptions), the operator shall register with the District any unit subject to this rule no later than the applicable date shown in Tab le 3, in accordance with Rule 2250 (Permit-Exempt Equipment Registration).

7.0 Compliance Schedule

7.1 An operator with multiple units at a stationary sou rce shall comply with this rule in accordance with the schedule specified in Table 3. An operator with only one unit at a stationary source shall comply with the schedu le specified in Table 3, Group 2.

TABLE 3 - Compliance Schedule

Quantity of Units to be in Compliance at a Stationary

Source Authority to

Construct Permit-Exempt

Equipment Registration Full Compliance

Group 1:
50% or more of the total number of units subject to this rule on July 1, 2008, excluding Group 3 January 1, 2008 April 1, 2008 July 1, 2008

Group 2:
100% of the total number of units subject to this rule on and after July 1, 2009, excluding Group 3 January 1, 2009 April 1, 2009 July 1, 2009

Group 3:
100%of the total number of units subject to Section 5.2.3
and 100% of the total number of units located at a school, subject to this rule on and after July 1, 2015 January 1, 2015 April 1, 2015 July 1, 2015

Units are considered to be subject to this rule if the rule is applicable to the units pursuant to Section 2.0 and the units are not exempt pursuan t to Section 4.0.

# PROPOSED May 19, 2011

4307 - 15 Proposed Amendments to Rule 4307 7.2 As shown in Table 3, the column labeled:

7.2.1 “Authority to Construct” identifies the date by which the operator shall submit an Application for Authority to Construct fo r each unit subject to this rule and which is required to have a Permit to Operate (PTO) pursuant to Rule 2020 (Exemptions).

7.2.2 “Permit-Exempt Equipment Registration” identifies t he date by which the owner or operator shall submit a complete Permit-Ex empt Equipment Registration application for each unit subject to t he registration requirements of Rule 2250 (Permit-Exempt Equipment Registration).

7.2.3 "Full Compliance" identifies the date by whic h the owner shall demonstrate that each unit is in compliance with this rule rega rdless of whether the unit requires a Permit to Operate or a Permit-Exempt Equ ipment Registration.

7.3 Any unit that becomes subject to the emission l imits of this rule as a result of exceeding the annual heat input limit specified in Section 5.2.1 or Section 5.2.2, shall be in compliance with the emission limits spe cified in Section 5.1 Table 1 on and after the date the annual heat input limit is e xceeded.

7.4 When an existing unit, that is subject to Secti on 5.2, is replaced, the replacement unit shall be certified, according to Section 9.0, or source tested in accordance with the test methods in Section 6.2 to comply with the applicable emission limits specified in Section 5.1, on and after the date of initial operation.

8.0 Calculations

8.1 All ppmv emission limits specified in Section 5 .1 are referenced at dry stack gas conditions and 3.00 percent by volume stack gas oxy gen. Emission concentrations shall be corrected to 3.00 percent oxygen as follow s:

measured

measured corrected NOx ppm x O NOx ppm ] [ ]2 [% % 95. 20 %

95. 17 ] [

−

=

measured

measured corrected CO ppm x O CO ppm ] [ ]2 [% % 95. 20 %

95. 17 ] [

−

=

8.2 All pounds per million Btu NOx emission rates shall be calculated as pounds of nitrogen dioxide per million Btu of heat input (hhv ).

9.0 Equipment Certification Requirements

9.1 To be considered for APCO certification, the ma nufacturer or operator shall comply with the following requirements:

# PROPOSED May 19, 2011

4307 - 16 Proposed Amendments to Rule 4307 9.1.1 Certification shall be based upon the emissio n source testing results of a specific unit, or a randomly selected unit of each model, or retrofit control technology.

9.1.2 A source testing protocol shall be submitted in acc ordance with the provisions of Rule 1081 (Source Sampling) for appro val by the APCO prior to conducting the source test. The source te sting protocol approved by the APCO shall be strictly adhered to d uring certification source testing.

9.1.3 Source testing shall be conducted over the range of operating parameters for which the unit(s) or retrofit control technolog y will be operated.

9.1.4 The source testing results shall demonstrate compliance with the emission limits of this rule for each model of unit(s), or r etrofit control technology

to be certified.

9.1.5 The source testing procedure and reports shal l be prepared by an ARBapproved independent testing laboratory, and shall contain all the elements identified in the APCO-approved source testing prot ocol.

9.1.6 Source testing shall be conducted no more tha n 90 days prior to the date of submission of request for certification by the APCO

.

9.2 The manufacturer or operator requesting certifi cation shall submit to the APCO the following information:

9.2.1 Copies of the source testing results conducte d pursuant to the requirements of Section 9.1, and other pertinent technical data to demonstrate compliance with the emission limits of this rule.

9.2.2 The applicant shall sign and date the stateme nt attesting to the accuracy of

all information in the statement.

9.2.3 Name and address of the unit manufacturer or operator, brand name of the unit or retrofit control technology, model number, rated heat input as it appears in the unit nameplate, and description of m odel of unit(s), or retrofit control technology being certified.

9.3 The APCO will only approve an application for c ertification to the extent that the requirements of Sections 9.1 through 9.2 are met an d the source testing results

demonstrate that the emission limits of this rule a re met.

9.4 The APCO-approved certification is valid only f or the range of operating parameters for which certification is issued.

# PROPOSED May 19, 2011

4307 - 17 Proposed Amendments to Rule 4307 9.5 A certified unit or a certified retrofit contro l technology that is operated outside the APCO-certified range of operating parameters sh all lose its certification status. A unit or retrofit control technology that loses it s certification status shall comply with the requirements of Section 6.3.3.

9.6 The APCO shall publish a list of certified unit s or certified retrofit control technology after the certification process is compl eted.