CALIFORNIA AIR RESOURCES BOARD 

APCD/AQMD RULE EVALUATION FORM -- Page 1

(Electronic Format) 

I. GENERAL INFORMATION

District: Yolo-Solano AQMD

Rule No(s): 2.43 Date adopted/Amended/Rescinded: Adopted November 10, 2010

Rule Title(s): Biomass Boilers

Date Submitted to ARB: November 12, 2010

If an Amended Rule, Date Last Amended (or Adopted): n/a

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: Susan McLaughlin Phone Number: 530-757-3667 E-mail Address: smclaughlin@ysaqmd.org

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

The District was required to adopt a rule for this source category in the Reasonably Available Control Technology 

(RACT) State Implementation Plan (SIP) (dated September 13, 2006), since the District does not currently have a 

prohibitory rule regulating this source category, there is no control technology guideline (CTG), and the single 

existing source subject to this rule is a major source. The rule affects one existing source within the District that 

has a boiler (over 5 MMBtu/hr) that burns biomass fuel. The rule limits nitrogen oxide (NOx) and carbon monoxide 

(CO) emissions from biomass fueled boilers by placing ppm limits on CO and NOx and requiring continuous 

emission monitors (CEMS) for ongoing monitoring.

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: 

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

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

 
CALIFORNIA AIR RESOURCES BOARD 

APCD/AQMD RULE EVALUATION FORM -- Page 2

(Electronic Format) 

Baseline Inventory in the SIP for the Control Measure: 

Emissions Reduction Commitment in the SIP for the Control Measure: 

Revised Baseline Inventory (if any): 

Revised Emission Reduction Estimate (if developed): 

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: 0

Percent in Nonattainment Area: % 

Number of Large (> 100 TPY) Sources Controlled: 1 Percent in Nonattainment Area: 100% 

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

necessary): Woodland Biomass Power Ltd., Woodland, CA

IV. EMISSION REDUCTION TECHNOLOGY

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

If Yes, Those Limits are in Section(s) 300 of the Rule. 

Other Methods in the Rule for Achieving Emission Reductions are: 

V. OTHER REQUIREMENTS

The Rule Contains: 

Emission Limits in Section(s): 300 Work Practice Standards in Section(s): 400

Recordkeeping Requirements in Section(s): 500 Reporting Requirements in Section(s): 500
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: Fulfills 2006 RACT SIP requirement. Is the third of three rules needed for adoption for major sources in 

categories not covered by a rule (Expandable Polystyrene Manufacturing, Nitric Acid Manufacturing, and Biomass Boilers). 

No reductions expected since source is already in compliance with provisions of the rule.