CALIFORNIA AIR RESOURCES BOARD 

APCD/AQMD RULE EVALUATION FORM – Page 1 

(Electronic Format) 

I. GENERAL INFORMATION

District: SJVUAPCD

Rule No(s): 4308 Date adopted/Amended/Rescinded: 12/17/2009

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

Date Submitted to ARB: 1/14/2010

If an Amended Rule, Date Last Amended (or Adopted): 10/20/2005

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: Katy Linebach Phone Number: (559) 230-5846 E-mail Address: katy.linebach@valleyair.org

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

The major changes to the rule include specifying limits for instantaneous and pool water heaters, along with 

lowering the NOx emissions limits for units, which are run on natural gas. 

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 implemented, will result in quantifiable changes in emissions. Attach reference(s) for emission 

factor(s) and other information. Attach calculation sheet showing how the emission information provided below was determined. 

Net Effect on Emissions: Increase Decrease N/A 

Emission Reduction Commitment in SIP for this Source Category: 0.55 tpd 

Inventory Year Used to Calculate Changes in Emissions: 2009 Area Affected: SJVAB

Future Year Control Profile Estimate (Provide information on as many years as possible): 

2011 - 2031 with 0.14 tpd each year reduced for an overall of 2.77 tpd of NOx reduced by 2031
 

CALIFORNIA AIR RESOURCES BOARD 

APCD/AQMD RULE EVALUATION FORM - Page 2 

(Electronic Format) 

Baseline Inventory in the SIP for the Control Measure: 3.65 for 2010 baseline from 2008 PM2.5 Plan

Emissions Reduction Commitment in the SIP for the Control Measure: 0.55 tpd in 2014

Revised Baseline Inventory (if any): 3.39 tpd for 2010

Revised Emission Reduction Estimate (if developed): 2.77 tpd total by 2031

Note that the district’s input to the Rule Evaluation Form will not be used as input to the ARB’s emission forecasting and 

planning. 

III. SOURCES/ATTAINMENT STATUS

District is: Attainment Nonattainment Split 

Approximate Total Number of Small (<100 TPY) Sources Affected by this Amendment: 17,600 units

Percent in Nonattainment Area: % 

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

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

necessary): 

IV. EMISSION REDUCTION TECHNOLOGY

Does the Rule Include Emission Limits that are Continuous? Yes No 

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

Other Methods in the Rule for Achieving Emission Reductions are: 

V. OTHER REQUIREMENTS

The Rule Contains: 

Emission Limits in Section(s): 5.0 Work Practice Standards in Section(s): 

Recordkeeping Requirements in Section(s): 6.0 Reporting Requirements in Section(s): 
 

5/1/2002 

CALIFORNIA AIR RESOURCES BOARD 

APCD/AQMD RULE EVALUATION FORM - Page 3 

(Electronic Format) 

VI. IMPACT ON AIR QUALITY PLAN

 No Impact Impacts RFP Impacts attainment 

Discussion: The amendments to Rule 4308 help reduce NOx emissions in the SJVAB. Because NOx is an ozone 

precursor, the rule has a positive impact on the attainment of the San Joaquin Valley for the ozone standard.