CALIFORNIA AIR RESOURCES BOARD

APCD/AQMD RULE EVALUATION FORM -- Page 1

(Electronic Format)

I. GENERAL INFORMATION

District: IMPERIAL COUNTY AIR POLLUTION CONTROL DISTRICT

Rule No(s): 804 Date adopted/Amended/Rescinded: OCTOBER 16, 2012

Rule Title(s): OPEN AREAS

Date Submitted to ARB: OCTOBER 23, 2012

If an Amended Rule, Date Last Amended (or Adopted): NOVEMBER 8, 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: REYES ROMERO Phone Number: (760) 482-4606 E-mail Address: reyesromero@co.imperial.ca.us

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

Rule 804 is one of a series of seven rules which together form Regulation VIII, Fugitive Dust Control. Rule 804

applies to any open area having 0.5 acres or more within urban areas, or 3.0 acres or more within rural areas; and 

contains at least 1000 square feet of disturbed surface area. The revision to Rule 804 exempts Recreational Off 

Highway Use areas managed by a Dust Control Plan under the requirements of Rule 800.

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: 1.14 tons/day

Inventory Year Used to Calculate Changes in Emissions: 2004 Area Affected: Imperial Valley Planning Area

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

Since it's original adoptin in 2005, Rule 804 continues to apply to non-agricultural rural open areas more than 3 acres 

(rural) or 0.5 (urban). The original analyis based on parcel data indicated that over 99.5 percent of the existing parcels 

were greater than 3 acres in size. Because assumptions have not changed and parcels are now being mitigated all 

original Emission Reduction Commitments remain the same. 
CALIFORNIA AIR RESOURCES BOARD

APCD/AQMD RULE EVALUATION FORM -- Page 2

(Electronic Format)

Baseline Inventory in the SIP for the Control Measure: 163.36 tons/day

Emissions Reduction Commitment in the SIP for the Control Measure: 1.14 tons/day

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: 

Percent in Nonattainment Area: %

Number of Large (> 100 TPY) Sources Controlled: None Percent in Nonattainment Area: N/A%

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) of the Rule.

Other Methods in the Rule for Achieving Emission Reductions are: Control measures which limit visible emissions to 

below 20% opacity and require stabilization of surfaces.

V. OTHER REQUIREMENTS

The Rule Contains:

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

Recordkeeping Requirements in Section(s): G Reporting Requirements in Section(s): G
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: Once adopted into the Imperial County State Implementation Plan as BACM the Air District will be able to 

better demonstrate reasonable and appropriate measures are in place when Exceptional Event demonstrations are 

developed and submitted for consideration to the US EPA for concurrence. Concurrence on Exceptional Event 

demonstrations allows for the demonstration of attainment of the PM10 National Ambient Air Quality Standard.