CALIFORNIA AIR RESOURCES BOARD 

APCD/AQMD RULE EVALUATION FORM -- Page 1

(Electronic Format) 

I. GENERAL INFORMATION 

District: Sacramento Metropolitan Air Quality Management District 

Rule No(s): 414 Date adopted/Amended/Rescinded: Amended March 25, 2010 

Rule Title(s): Water Heaters, Boilers and Process Heaters Rated Less than 1,000,000 Btu per Hour 

Date Submitted to ARB: December 20, 2010 

If an Amended Rule, Date Last Amended (or Adopted): Adopted August 1, 1996 

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: Kevin J. Williams Phone Number: (916) 874-4851 E-mail Address: kjwilliams@airquality.org 

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

This Rule 414 amendment establishes NOx emission limits for water heaters, boilers, and process heaters with 

rated heat input capacities ranging from 75,000 to 1,000,000 Btu/hr, and sets more stringent NOx limits for units 

rated below 75,000 Btu per hour. The emission limits are based on those contained in SCAQMD Rule 1146.2 

(Emissions of Oxides of Nitrogen from Large Water Heaters and Small Boilers and Process Heaters) and 

SCAQMD Rule 1121 (Control of Nitrogen Oxides from Residential- Type, Natural Gas-Fired Water Heaters). 

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: The 2009 8-hour ozone attainment plan includes a 

commitment to reduce NOx emissions from water heaters, boilers and process heaters rated less than 1,000,000 

Btu/hr by 0.71 tpd in the Sacramento district in 2018. This amendment achieves a NOx reduction of 0.71 tpd in 2018 

and therefore satisfies the plan commitment. 

Inventory Year Used to Calculate Changes in Emissions: 2018 Area Affected: Sacramento County 

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

N/A 
CALIFORNIA AIR RESOURCES BOARD 

APCD/AQMD RULE EVALUATION FORM -- Page 2

(Electronic Format) 

Baseline Inventory in the SIP for the Control Measure: 1.3 tpd from the Sacramento district 

Emissions Reduction Commitment in the SIP for the Control Measure: 0.71 tpd from the Sacramento district 

Revised Baseline Inventory (if any): N/A 

Revised Emission Reduction Estimate (if developed): N/A 

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: 557,800

Percent in Nonattainment Area: 100% 

Number of Large (> 100 TPY) Sources Controlled: 0 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 Continuous? Yes No 

If Yes, Those Limits are in Section(s) 301 of the Rule. 

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

V. OTHER REQUIREMENTS 

The Rule Contains: 

Emission Limits in Section(s): 301 Work Practice Standards in Section(s): N/A 

Recordkeeping Requirements in Section(s): 502 Reporting Requirements in Section(s): 401 
CALIFORNIA AIR RESOURCES BOARD 

APCD/AQMD RULE EVALUATION FORM -- Page 3

(Electronic Format) 

5/1/2002 

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VI. IMPACT ON AIR QUALITY PLAN 

 No Impact Impacts RFP Impacts attainment 

Discussion: Reduces emissions and contributes to reasonable further progess and attainment.