CALIFORNIA AIR RESOURCES BOARD 

APCD/AQMD RULE EVALUATION FORM -- Page 1

(Electronic Format) 

I. GENERAL INFORMATION 

District: South Coast 

Rule No(s): 463 Date adopted/Amended/Rescinded: Nov 4, 2011 

Rule Title(s): Organic Liquid Storage 

Date Submitted to ARB: Dec 8, 2011 

If an Amended Rule, Date Last Amended (or Adopted): May 6. 2005 

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: Dairo Moody Phone Number: 909 396-2333 E-mail Address: dmoody@aqmd.gov 

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

The amendment to Rule 463 – Organic Liquid Storage, allows the determination of true vapor pressure for low 

volatility petroleum products by using alternative test methods that rely upon other chemical properties, including 

flash point and percent volume loss under defined test conditions (ASTM Method D-93-10a and ASTM Method D86-11a, respectively.) The proposed amendment updates the vapor tightness definition to reflect a detection limit 

of 500 ppmv rather than 1000 ppmv, consistent with Rule 1178 - Further Reductions of VOC Emissions from 

Storage Tanks at Petroleum Facilities, and historically achieved in practice by industry. The proposed amendment 

also includes additional administrative changes to further clarify rule requirements, streamline recordkeeping and 

reporting requirements, and improve overall enforceability. 

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: N/A 

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: N/A 

Emissions Reduction Commitment in the SIP for the Control Measure: N/A 

Revised Baseline Inventory (if any): N/A 

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

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: 83

Percent in Nonattainment Area: 100% 

Number of Large (> 100 TPY) Sources Controlled: 0 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): N/A 

IV. EMISSION REDUCTION TECHNOLOGY 

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

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

Other Methods in the Rule for Achieving Emission Reductions are: Sample Testing 

V. OTHER REQUIREMENTS 

The Rule Contains: 

Emission Limits in Section(s): (d)(10) to (d)(13) Work Practice Standards in Section(s): (d)(1)(C),(d)(8),(d)(14) to 

(d)(16) 

Recordkeeping Requirements in Section(s): (f)(1) Reporting Requirements in Section(s): (f)(2) to (f)(4) 
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: