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Rule No(s): 2.31 Date adopted/Amended/Rescinded: May 8, 2013 

Rule Title(s): Solvent Cleaning and Degreasing 

Date Submitted to ARB: May 10, 2013 

If an Amended Rule, Date Last Amended (or Adopted): May 14, 2008 

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: Paul Hensleigh Phone Number: 530-757-3665 E-mail Address: phensleigh@ysaqmd.org 

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

This rule is being amended to add applicable VOC limits for aerospace vehicle and component operations. In 

addition, the rule is being amended to incorporate EPA's recommended rule improvements, and also to clarify 

requirements for solvent degreasing operations. 

Concurrent (and contingent upon) with SIP submittal of this rule (2.31), the District is requesting that Rule 2.24 

Solvent Cleaning Operations (Degreasing) 11/14/1990, and Rule 2.13 Organic Solvents 5/24/1994 be rescinded 

from the SIP, as this new rule 2.31 supercedes the requirements in these other 2 rules. 

The calculations for the emission reductions were performed with the 2008 amendments, so that staff report with 

calculations (starting on page 35, and also in Attachment B) is attached with this submittal. 

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: 0.7 tpd 

Inventory Year Used to Calculate Changes in Emissions: 2005 Area Affected: 

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

2018 

Baseline Inventory in the SIP for the Control Measure: 329 tons/year 

Emissions Reduction Commitment in the SIP for the Control Measure: 0.7 tpd 

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. 
CALIFORNIA AIR RESOURCES BOARD 

APCD/AQMD RULE EVALUATION FORM -- Page 2

(Electronic Format) 

III. SOURCES/ATTAINMENT STATUS 

District is: Attainment Nonattainment Split 

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

Percent in Nonattainment Area: % 

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

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

necessary): 

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: 

V. OTHER REQUIREMENTS 

The Rule Contains: 

Emission Limits in Section(s): 301 Work Practice Standards in Section(s): 302 through 307 

Recordkeeping Requirements in Section(s): 501 Reporting Requirements in Section(s): 

VI. IMPACT ON AIR QUALITY PLAN 

 No Impact Impacts RFP Impacts attainment 

Discussion: