CALIFORNIA AIR RESOURCES BOARD

APCD/AQMD RULE EVALUATION FORM – Page 1

(Electronic Format)

I. GENERAL INFORMATION

District: Yolo-Solano Air Quality Management District 

Rule No(s): 2.41 Date Adopted/Amended/Rescinded: Adopted September 10, 2008 

Title(s): Expandable Polystyrene Manufacturing Operations 

Date Submitted to ARB: October 10, 2008 

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

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

form)

District Contact: Courtney Graham Phone Number: 530-757-3655 e-mail Address: cgraham@ysaqmd.org 

Narrative Summary of New Rule or Rule Changes: New Rule (X) Amended Rule ( ) 

 The District committed to adopting a rule for this source category in the Reasonably Available Control Technology (RACT)

State Implementation Plan (SIP), dated September 13, 2006. The District has one permitted source that would be subject

to this rule. The source has permitted emissions of 175 tons per year of volatile organic compounds (VOCs), which is

above the major source threshold of 25 tons per year. The District does not currently have a prohibitory rule regulating this

source category. The rule requires 90% collection and 95% destruction of manufacturing emissions with a 5.2% VOC limit

on raw material. Annual source testing is required to verify control requirements and an O&M plan is required. 

Pollutant(s) Regulated by the Rule (Check): ROG (X) 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 (X)

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 (X) Split ( )

Approximate Total Number of Small (<100 TPY) Sources Affected by this Amendment: 0 

Percent in Nonattainment Area: n/a %

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): Insulfoam, LLC; 1155 Business Park Dr.; Dixon, CA 

IV. EMISSION REDUCTION TECHNOLOGY

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

If Yes, Those Limits are in Section(s) 301 and 302 of the Rule.

Other Methods in the Rule for Achieving Emission Reductions are: 

V. OTHER REQUIREMENTS

The Rule Contains:

Emission Limits in Section(s): 301 and 302 W ork Practice Standards in Section(s): 303 

Recordkeeping Requirements in Section(s): 502 Reporting Requirements in Section(s): 501, 402 
CALIFORNIA AIR RESOURCES BOARD

APCD/AQMD RULE EVALUATION FORM - Page 3

(Electronic Format)

VI. IMPACT ON AIR QUALITY PLAN

No Impact (x) Impacts RFP ( ) Impacts attainment ( )

Discussion: