CALIFORNIA AIR RESOURCES BOARD



### APCD/AQMD RULE EVALUATION FORM – Page 1

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I. GENERAL INFORMATION

District: SJVUAPCD

Rule No(s): 4308 Date adopted/Amended/Rescinded: Amended November 14, 2013

Rule Title(s): Boilers, Steam Generators, and Proc ess Heaters--0.075 MMBtu/hr to less than 2.0 MMBtu/ hr

Date Submitted to ARB: December 6, 2013

If an Amended Rule, Date Last Amended (or Adopted): Last Amended December 17, 2009

Is the Rule Intended to be Sent to the U.S. EPA as a SIP Revision? Yes No ( If No, do not complete remainder of form)

District Contact: Chelsea Gonzales Phone Number: (559) 230-6100 E-mail Address: Chelsea.Gonzales@ valleyair.org

Narrative Summary of New Rule or Rule Changes: New Rule Amended Rule

Amendments to Rule 4308 satisfy a control measure c ommitment included in the District's 2012 PM2.5 Pla n. The amendments to Rule 4308 incorporate a lower NOx emi ssion limit for instantaneous water heaters with a rated heat input of 0.075-0.4 MMBtu/hr. There are also s everal administrative amendments to clarify rule ap plicability and to remove outdated and redundant language.

Pollutant(s) Regulated by the Rule (Check): ROG (NOx) SO2 (CO) PM TAC (name):

II. EFFECT ON EMISSIONS

Complete this section ONLY for rules that, when imp lemented, will result in quantifiable changes in em issions. Attach reference(s) for emission

factor(s) and other information. Attach calculatio n sheet showing how the emission information provid ed below was determined

.

Net Effect on Emissions: Increase Decrease N/A

Emission Reduction Commitment in SIP for this Sourc e Category: reductions not specified

Inventory Year Used to Calculate Changes in Emissio ns: 2015 Area Affected: SJV Air Basin

Future Year Control Profile Estimate (Provide information on as many years as possible) : Cumulative NOx Emission Reductions (tons per year)- 2019: 0.34 tpy, 2024: 0.76 tpy, 2029: 1.25 tpy, 2034: 1.82 tpyCALIFORNIA AIR RESOURCES BOARD



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Baseline Inventory in the SIP for the Control Measu re: N/A

Emissions Reduction Commitment in the SIP for the C ontrol Measure: not specified

Revised Baseline Inventory (if any): 2.92 tpy

Revised Emission Reduction Estimate (if developed): 1.82 tpy upon full rule implementation

Note that the district’s input to the Rule Evaluati on Form will not be used as input to the ARB’s emis sion forecasting and planning.

III. SOURCES/ATTAINMENT STATUS

District is: Attainment Nonattainment Split

Approximate Total Number of Small (<100 TPY) Source s Affected by this Amendment: N/A

Percent in Nonattainment Area: 100%

Number of Large (> 100 TPY) Sources Controlled: N/ A Percent in Nonattainment Area: N/A%

Name(s) and Location(s) (city and county) of Large (> 100 TPY) Sources Controlled by Rule (Attach additional sheets as

necessary) : N/A

IV. EMISSION REDUCTION TECHNOLOGY

Does the Rule Include Emission Limits that are Cont inuous? Yes No

If Yes, Those Limits are in Section(s) 5.0 of the Rule.

Other Methods in the Rule for Achieving Emission Re ductions are: N/A

V. OTHER REQUIREMENTS

The Rule Contains:

Emission Limits in Section(s): 5.0 Work Practic e Standards in Section(s): 6.0 Recordkeeping Requirements in Section(s): 6.0 Rep orting Requirements in Section(s): 6.05/1/2002 CALIFORNIA AIR RESOURCES BOARD



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VI. IMPACT ON AIR QUALITY PLAN

No Impact Impacts RFP Impacts attainment

Discussion: Rule 4308 is the District’s point-of-s ale rule for boilers, steam generators, and process heaters with a rated heat input capacity of 0.075 to less than 2.0 milli on British thermal units per hour (MMBtu/hr). In t he District’s 2012 PM2.5

Plan, the District committed to further reduce emis sions from this source category by lowering the NOx emission limit for natural gas-fired instantaneous water heaters with a rated heat input of 0.075-0.4 MMBtu/hr (instantan eous units). Rule

amendments lower the NOx emission limit for these i nstantaneous units from 55 ppmv to 20 ppmv, effecti ve on and after January 1, 2015. Amendments satisfy the commitment included in the 2012 PM2.5 Plan and will contribut e to the Valley’s progress towards attainment of federal air quality standards for PM2.5 and ozone by reducing NOx emiss ions.