**CALIFORNIA AIR RESOURCES BOARD**



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

**(Electronic Format)**

I. GENERAL INFORMATION

**District: South Coast Air Quality Management Distr ict** 

**Rule No(s): 1146.1 Date adopted/Amended/Rescinded: September 5, 2008** 

**Rule Title(s): 1146.1 - Emissions of Oxides of Nitr ogen from Small Industrial, Institutional, and Comm**  **ercial**

**Boilers, Steam Generators, and Process Heaters**

**Date Submitted to ARB: February 5, 2010**

**If an Amended Rule, Date Last Amended (or Adopted):** May 13, 1994

**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: Joe Cassmassi Phone Number: 909-396-3155**  **E-mail Address: jcassmassi@aqmd.gov**

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

**Amended Rule 1146.1 further reduces NOx emissions f rom medium-size boilers, steam generators, and proc**  **ess**

**heaters with maximum rated heat input capacities be tween 2 and 5 million BTU per hour by lowering the** 

**applicable NOx emission limits beginning 2012 throu gh 2015, depending on type of fuel and burner used.**  **In an**

**effort to improve compliance, the amended rule sign ificantly strengthens the monitoring requirements o**  **f the rule.**

**The amendment also harmonizes the NOx compliance li mits with those limits in amended Rule 1146 – Emiss**  **ions**

**of Oxides of Nitrogen from Industrial, Institutiona l, and Commercial Boilers, Steam Generators, and Pr**  **ocess**

**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 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:** 

**There was an emission reduction commitment in the 2 007 AQMP of 2.0 tons/day from Control Measure** 

**MCS-01. This control measure also includes reducti ons from sources subject to Rules 1146 and 1110.2.** 

**Inventory Year Used to Calculate Changes in Emissio ns: 2002 (baseline from 2007 AQMP inventory)** 

**Area Affected: SCAQMD CALIFORNIA AIR RESOURCES BOARD** 



### APCD/AQMD RULE EVALUATION FORM - Page 2

**(Electronic Format)**

**Baseline Inventory in the SIP for the Control Measu re**  **1 : 0.42 tons/day NOx (2002 Annual Average); 0.47 to**  **ns/day NOx**

**(2014 Annual Average); and 0.60 tons/day NOx (2023 Summer Planning).** 

**Emissions Reduction Commitment in the SIP for the C ontrol Measure**  **1,2 : 0.29 tons/day NOx (2014 Annual Average); and** 

**0.42 tons/day NOx (2023 Summer Planning).**

**Revised Baseline Inventory (if any): N/A**

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

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: 1,072** 

**Percent in Nonattainment Area: NA**

**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) (c) of the Rule.** 

**Other Methods in the Rule for Achieving Emission Re ductions are: On or after January 1, 2015 or durin**  **g burner**

**replacement, whichever occurs later, owners or oper ators of low fuel use units (i.e., ≤ 18,000 therms**  **per year) will be**

**required to replace with lower NOx level 30 ppm bur ners.** 

V. OTHER REQUIREMENTS

**The Rule Contains:**

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

**Recordkeeping Requirements in Section(s): (d) Reporting Requirements in Section(s): (c), (d), a**  **nd (e)**

1 The NOx emission baseline and reductions only refl ect the Rule 1146.1 portion of the Control Measure.

2 NOx reductions beyond 2014 would be obtained from the low-fuel usage units (i.e., ≤ 18,000 therms per year) through burner

replacement.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: This amendment of Rule 1146.1 will redu ce emissions of NOx to help achieve compliance** 

**with ambient air quality standards for ozone and pa rticulate matter.**