CALIFORNIA AIR RESOURCES BOARD

APCD/AQMD RULE EVALUATION FORM -- Page 1

(Electronic Format)

I. GENERAL INFORMATION

District: El Dorado County Air Quality Management District

Rule No(s): N/A Date adopted/Amended/Rescinded: January 12, 2016

Rule Title(s): Ozone Emergency Episode Plan

Date Submitted to ARB: February 23, 2016

If an Amended Rule, Date Last Amended (or Adopted): n/a

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: Dave Johnston Phone Number: 530-621-7578 E-mail Address: dave.johnston@edcgov.us

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

This Ozone Emergency Episode Plan (Plan) contains actions to prevent ambient ozone from reaching potential 

public health endangerment concentrations and reduce such concentrations. It identifies emergency episode 

levels, public announcement components, and emission control strategies. El Dorado County (EDC) is classified 

as non-attainment for the 2008 federal ozone 8-hour average standard . Because EDC experienced more than 

one day with a maximum hourly ozone concentration greater than 0.10 ppm during the 2011/2012 period, the EDC 

Air Quality Management District (AQMD) is required to prepare this Plan pursuant to the Code of Federal 

Regulations 40 CFR 51.150 and 51.151.

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

Inventory Year Used to Calculate Changes in Emissions: n/a Area Affected: El Dorado County

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

n/a
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: 0

Revised Baseline Inventory (if any): 0

Revised Emission Reduction Estimate (if developed): 0

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: unk

Percent in Nonattainment Area: unk%

Number of Large (> 100 TPY) Sources Controlled: 0 Percent in Nonattainment Area: 0%

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

necessary): There are no stationary sources emitting > 100 TPY in El Dorado County.

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 Plan would achieve reductions only during a 

designated ozone emergency episode through the use of both voluntary and mandatory measures including closing 

government, commercial, and industrial facilities, street closures, carpooling, etc. 

V. OTHER REQUIREMENTS

The Rule Contains:

Emission Limits in Section(s): 1, 2, & 3 Work Practice Standards in Section(s): 1, 2, & 3

Recordkeeping Requirements in Section(s): Reporting Requirements in Section(s): 
CALIFORNIA AIR RESOURCES BOARD

APCD/AQMD RULE EVALUATION FORM -- Page 3

(Electronic Format)

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VI. IMPACT ON AIR QUALITY PLAN

 No Impact Impacts RFP Impacts attainment

Discussion: The Plan establishes three ozone episode trigger levels (1-hr average): Alert, Stage 1: 0.20ppm, Warning, 

Stage 2: 0.35ppm, and Emergency, Stage 3: 0.50ppm. The Plan details actions AQMD will take in the event each of these 

trigger levels are exceeded. Since 1975, there have been no maximum 1-hr ozone levels that would have exceeded the 

lowest Stage 1 level of 0.20ppm.