AIR RESOURCES BOARD

VENTURA COUNTY APCD RULE EVALUATION FORM - Page 1

0 I. GENERAL INFORMATION

District: Ventura County APCD Rule Nos.: 74.11.1 & 74.15.1 Date Amended: Sept 11, 2012

Rule Titles: Large Water Heaters and Small Boilers (74.11.1) and Boilers, Steam Generators, and Process Heaters (74.15.1)

Date Submitted to ARB: October 23, 2012 If an Amended Rule, Date Last Amended: Rule 74.11.1 on 5/11/10 and Rule 74.15.1

on 6/13/2000

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

District Contact: Stan Cowen Phone No.: 805/645-1408

Narrative Summary of New Rule or Rule Changes: ( ) New Rule (X) Amended: Revisions to these rules will change the applicability so that 

boilers at 1 million BTUs or larger will be transferred from Rule 74.11.1 to Rule 74.15.1. In Rule 74.11.1, a new NOx limit of 20 ppm will apply to 

units for sale from 400,000 BTUs to 1 million BTUs effective January 1, 2013. On January 1, 2014, all units for sale from 75,000 BTUs to 400,000 

BTUs/hr, except pool heaters, will be subject to NOx limits of 20 ppm. In Rule 74.15.1, effective on January 1, 2013, new boilers from 1 million 

BTUs/hr to 2 million BTUs/hr will subject to the 20 ppm NOx limit. Also, new annual NOx and CO screenings will be required for all boilers

(except low-use boilers) while the source test requirements for boilers from 1 million BTUs/hr to 2 million BTUs/hr will be required every 4 years 

rather than 2 years. In summary, only new boilers are subject to the new 20 ppm NOx limits.

Pollutant(s) Regulated by the Rule (Circle): ROG NOx SO2 PM10 CO TAC

II. EFFECT ON EMISSIONS

Complete this section ONLY for rules that, when implemented, will result in quantifiable changes in emission. Attach reference(s) for emission factor(s) and other 

information. Attach calculation sheet showing how the emissions information provided below was determined. See staff report Appendix A for emission calculations.

Net Effect on Emissions: ( ) Increase(X) Decrease ( ) N/A No impact on emissions. See attached staff report for emission reduction 

calculations. The net effect of both rules is to reduce NOx emissions by 11.3 tons per year.

II. EFFECT ON EMISSIONS

Emission Reduction Commitment in SIP (Control Measure N-102) for this source category: 2011 Triennial Assessment: To be determined. 
AIR RESOURCES BOARD

VENTURA COUNTY APCD RULE EVALUATION FORM - Page 2

Inventory Year Used to Calculate Changes in Emissions: 2012 Area Affected:County

Future Year Control Profile Estimate:

Year

Tons/year 

Reductions 

2012 Baseline 

Tons/year 

Subject to Rule

Control 

Level

Percent 

Control

Control 

Level

Control Factor

2014 1.13 / 20 = 0.0565 * 100 = 5.65% 1.00 - 0.0565 = 0.9435

2015 1.13 / 20 = 0.0565 * 100 = 5.65% 1.00 - 0.0565 = 0.9435

2016 1.13 20 0.0565 * 100 = 5.65% 1.00 - 0.0565 = 0.9435

2017 1.13 20 0.0565 * 100 = 5.65% 1.00 - 0.0565 = 0.9435

2018 1.13 20 0.0565 * 100 = 5.65% 1.00 - 0.0565 = 0.9435

2019 1.13 20 0.0565 * 100 = 5.65% 1.00 - 0.0565 = 0.9435

2020 1.13 20 0.0565 * 100 = 5.65% 1.00 - 0.0565 = 0.9435

2021 1.13 20 0.0565 * 100 = 5.65% 1.00 - 0.0565 = 0.9435

2022 1.13 20 0.0565 * 100 = 5.65% 1.00 - 0.0565 = 0.9435

2023 1.13 20 0.0565 * 100 = 5.65% 1.00 - 0.0565 = 0.9435

III. SOURCES/ATTAINMENT STATUS

District is: ( ) Attainment(X) Nonattainment ( ) Split

Approximate Total Number of Small (<100 TPY) Sources Controlled by Rule: 2710

Percent in Nonattainment Area: 100 %

Number of Large (>100 TPY) Sources Controlled: None Percent in Nonattainment Area: Not Applicable

IV. EMISSION REDUCTION TECHNOLOGY

Do the Rules Include Emission Limits that are Continuous? Yes.
AIR RESOURCES BOARD

VENTURA COUNTY APCD RULE EVALUATION FORM - Page 3

V. OTHER REQUIREMENTS

RULE 74.11.1 Requirements include: RULE 74.15.1 Requirements include:

Emission Limits in Section(s): Section B Emission Limits in Section(s): Section B

Recordkeeping Requirements in Section(s): Not Applicable Testing Requirements in Section(s): Section B

Reporting Requirements in Section(s): Section C. Recordkeeping in Section(s): Section D

Labeling Requirements in Section: Section D Test Methods in Section(s): Section E

Enforcement Procedures in Section: Section E. Enforcement Procedures in Section(s): Section F

VI. IMPACT ON AIR QUALITY PLAN

(X) No Impact( ) Impacts RFP ( ) Impacts attainment

Discussion: Amendments to Rule 74.11.1 and Rule 74.15.1 will reduce NOx emissions for Ventura County’s efforts toward 

achieving attainment of the ozone standard. Therefore, RFP will be furthered by amendments to both rules.