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Rule No(s): 806 Date adopted/Amended/Rescinded: OCTOBER 16, 2012

Rule Title(s): CONSERVATION MANAGEMENT PRACTICES

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

Rule 806 applies to Agricultural Operation Sites located within Imperial County. Adopted revisions to Rule 806

address the identified rule improvements, which ensure Best Available Control Measures, by the US EPA on its 

limited approval/limited disapproval issued July 2010. Rule 806 includes new and/or revised definitions for clarity of

applicability and a revision to requirements affecting the development and implementation of Conservation 

Management Practices Plan. Specifically two new categories "Cropland Other" and "Windblown Dust" have been 

added. Editorial changes were made through out the rule for consistency. 

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: 4.16 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 its original adoption back in 2005 Rule 806 continues to require Conservation Management Practices (CMPs) at all 

Agricultural Operations over 40 acres allowing for an efficiency factor above 90%. With the addition of the two new CMP 

categories the analysis indicates that the original SIP Reduction Commitment need not change. The two new CMP 

categories are an enhancement and strengthen the rule.
CALIFORNIA AIR RESOURCES BOARD

APCD/AQMD RULE EVALUATION FORM -- Page 2

(Electronic Format)

Baseline Inventory in the SIP for the Control Measure: 25.35 tons/day

Emissions Reduction Commitment in the SIP for the Control Measure: 4.16 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: The development and implementation of a Dust 

Control Plan with CMP's which limit visible emissions to below 20% opacityand require stabilization of surfaces.

V. OTHER REQUIREMENTS

The Rule Contains:

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

Recordkeeping Requirements in Section(s): H Reporting Requirements in Section(s): H
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, enhancing 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.