CALIFORNIA AIR RESOURCES BOARD 

APCD/AQMD RULE EVALUATION FORM – Page 1 

(Electronic Format) 

I. GENERAL INFORMATION

District: South Coast A.Q.M.D

Rule No(s): 1148.1 Date adopted/Amended/Rescinded: March 5, 2004

Rule Title(s): Oil and Gas Production Wells

Date Submitted to ARB: October 22, 2009

If an Amended Rule, Date Last Amended (or Adopted): Not Applicable

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: Elaine Chang Phone Number: (909) 396-3186 E-mail Address: echang@aqmd.gov

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

Rule 1148.1 is a newly-adopted rule that will reduce VOC emissions from well cellars, as well as from sources of 

untreated process gas, located at oil and gas production facilities through an enhanced visual inspection and 

maintenance program and by requiring facilities to control untreated produced gas. Rule 1148.1 will implement 

Control Measure FUG-05 (II) of the 2003 Air Quality Management Plan (AQMP). 

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: 1.27 tons/day (2003 SIP FUG-05(II)

Inventory Year Used to Calculate Changes in Emissions: 2000-01 Area Affected: SCAQMD

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

It is expected that the entire 1.27 tons per day of emission reductions will be achieved through the wellhead and well 

cellar inspection and maintenance program which takes effect on July 1, 2004.
 

CALIFORNIA AIR RESOURCES BOARD 

APCD/AQMD RULE EVALUATION FORM - Page 2 

(Electronic Format) 

Baseline Inventory in the SIP for the Control Measure: 1.59 tons/day by 2010 (2003 AQMP; FUG-05 (II) - Emission 

Reductions from Fugitive VOC Sources).

Emissions Reduction Commitment in the SIP for the Control Measure: 1.0 tons/day in Control Measure FUG-05 (II)

Revised Baseline Inventory (if any): Not Applicable

Revised Emission Reduction Estimate (if developed): Not Applicable

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: 220

Percent in Nonattainment Area: 100% 

Number of Large (> 100 TPY) Sources Controlled: none 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): Not Applicable

IV. EMISSION REDUCTION TECHNOLOGY

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

If Yes, Those Limits are in Section(s) (d)(3), (d)(5), (d)(6)(B) & (d)(7) of the Rule. 

Other Methods in the Rule for Achieving Emission Reductions are: Installation of control equipment with vapor control 

efficiency of at least 95% by weight per section (d)(6)(B).

V. OTHER REQUIREMENTS

The Rule Contains: 

Emission Limits in Section(s): (d)(3), (d)(5), (d)(6)(B) & (d)(7). Work Practice Standards in Section(s): (d)(1), (d)(2), 

(d)(3), (d)(4), (d)(5), (d)(7) & (d)(8).

Recordkeeping Requirements in Section(s): (f) Reporting Requirements in Section(s): N/A
 

5/1/2002 

CALIFORNIA AIR RESOURCES BOARD 

APCD/AQMD RULE EVALUATION FORM - Page 3 

(Electronic Format) 

VI. IMPACT ON AIR QUALITY PLAN

 No Impact Impacts RFP Impacts attainment 

Discussion: The adoption of Rule 1148.1 - Oil and Gas Production Wells implements Control Measure FUG-05 (II) of the 

2003 AQMP by reducing VOC emissions by 1.27 tons per day. These reductions will be achieved through a wellhead 

and well cellar inspection and maintenance program that takes effect on July 1, 2004. Another 0.79 tons per day of VOC 

emission reduction will be obtained by controlling produced gas that would otherwise be vented directly to the 

atmosphere. However, these emission reductions are not SIP-creditable because produced gas emissions were not 

included in the emissions inventory for these sources under the 2003 AQMP. Prior to the adoption of Rule 1148.1, 

operators were not required to report produced gas emissions.