CALIFORNIA AIR RESOURCES BOARD



### APCD/AQMD RULE EVALUATION FORM -- Page 1

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I. GENERAL INFORMATION

District: Northern Sonoma County Air Pollution Con trol District

Rule No(s): 130, 221 Date adopted/Amended/Rescind ed: 12/14/10

Rule Title(s): 130: Definitions; 221: Federal Perm itting for Greenhouse Gas Emissions

Date Submitted to ARB: February 10, 2011

If an Amended Rule, Date Last Amended (or Adopted): Rule 130: amended 7/25/95

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: Barbara Lee Phone Number: 707- 433-5911 E-mail Address: blee1@sonoma-county.org

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

Adopted Rule 221: Federal Permitting for Greenhouse Gas Emissions. The District was required to adopt this rule

based upon the EPA's recently adopted Greenhouse Ga s Tailoring Rule. The rule phases in permitting

requirements for stationary sources of greenhouse g ases; it applies to large sources of greenhouse gas

emissions. The only known such sources within the d istrict are Geysers Power Company and Northern Cali fornia

Power Authority. Rule 221 will require sources to e valuate greenhouse gas emissions during the permitt ing

process. District Rule 130 (Definitions) was revise d in order to be consistent with the new Rule 221. Along with

changes to Rule 130 for consistency, the District a lso changed Rule 130 by implementing new and revise d

significant emissions thresholds and increments (pe rtaining to PM 2.5 and municipal waste landfills an d

incinerators) in order to match EPA's thresholds an d increments set forth since the last modification to the

District's program. This change is not anticipated to affect operations at sources within the District

.

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 imp lemented, will result in quantifiable changes in em issions. Attach reference(s) for emission

factor(s) and other information. Attach calculatio n sheet showing how the emission information provid ed below was determined

.

Net Effect on Emissions: Increase Decrease N/A

Emission Reduction Commitment in SIP for this Sourc e Category:

Inventory Year Used to Calculate Changes in Emissio ns: Area Affected:

Future Year Control Profile Estimate (Provide information on as many years as possible) :CALIFORNIA AIR RESOURCES BOARD



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Baseline Inventory in the SIP for the Control Measu re:

Emissions Reduction Commitment in the SIP for the C ontrol Measure:

Revised Baseline Inventory (if any):

Revised Emission Reduction Estimate (if developed):

Note that the district’s input to the Rule Evaluati on Form will not be used as input to the ARB’s emis sion forecasting and

planning.

III. SOURCES/ATTAINMENT STATUS

District is: Attainment Nonattainment Split

Approximate Total Number of Small (<100 TPY) Source s Affected by this Amendment:

Percent in Nonattainment Area: %

Number of Large (> 100 TPY) Sources Controlled: 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) :

IV. EMISSION REDUCTION TECHNOLOGY

Does the Rule Include Emission Limits that are Cont inuous? Yes No

If Yes, Those Limits are in Section(s) of th e Rule.

Other Methods in the Rule for Achieving Emission Re ductions are:

V. OTHER REQUIREMENTS

The Rule Contains:

Emission Limits in Section(s): Work Pract ice Standards in Section(s):

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



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VI. IMPACT ON AIR QUALITY PLAN

No Impact Impacts RFP Impacts attainment

Discussion: