11464 B Avenue, Auburn, CA 95603 • (530) 889-7130 • Fax (530) 889-7107

Thomas J. Christofk, Air Pollution Control Officer

MEMORANDUM

TO: Board of Directors, Placer C ounty Air Pollution Control District

FROM: John Finnell, Senior Air Po llution Control Engineer

AGENDA DATE: April 10, 2003

SUBJECT: Adoption of Rule 242, Stationary Internal Combustion Engines (Action/Public Hearing)

Action Requested :

1) Conduct a Public Hearing regarding the proposed adoption of Rule 242, Stationary Internal Combustion Engines ; and

2) Approve Resolution #03-05, thereby adopting Rule 242, Stationary Internal Combustion Engines

Background:

The proposed rule is included as a Nitr ogen Oxide (NOx) control measure in the Sacramento Area Regional Ozone Attainment Plan, which was adopted by the Board on

December 20, 1994. VOC emissions and Oxid es of Nitrogen (NOx) emissions are precursors to the photochemical formation of Ozone. The Attainment Plan was adopted in response to the 1990 Amendments to the Federal Clean Air Act (CAA), which required areas designated “serious” for Oz one by the United States Environmental Protection Agency (USEPA), to submit a St ate Implementation Plan (SIP) revision.

The proposed rule was drafted using Yolo -Solano District Rule 232, amended in September 2001, as a guide for emission limits. Other rules in nearby districts were considered, including Sacramento, El Dora do, and Tehema County. Staff believes that emission limitations in the proposed rule are ac hievable for most existing sources. Most new engines will be compliant with these limits.

The District presently has a number of sources in this category. Many are permitted for emergency power and will be exempt from the NOx emission limits of this rule. These include emergency generators, fire protecti on pumps, flood control pumps and ski lift backup engines.Rule 242, Stationary Internal Combustion Engines

PCAPCD Board of Directors Agenda Date: April 10, 2003 Page 2

Discussion:

The proposed Rule applies to engines rated at greater than 50 hp, located anywhere in Placer County. Engines that will be exempt are those used for emergency power, and engines used less than 200 hours per year. Al so exempt are some special use engines, including agricultural uses.

Standards include emission limits on NOx a nd CO, based on parts/million, by volume, in the exhaust gas stream. Standards vary accord ing to four categories of engines. They are: spark-ignited rich burn engines, spark-i gnited lean burn engines and diesel engines. Lean burn NOx limits for engines rated grea ter than 100 hp are more strict than those rated at 100 hp or less.

Compliance date for existing engines is 90 da ys after date of adoption of this rule. Engines requiring retrofit to meet the standards of this rule must file Authority to Construct (A/C) within 90 days after the adoption of this rule . Retrofit engines must be compliant with this rule no later than July 1, 2004. Requirements for removing noncompliant engines from service or replacing th em with electric motors are also included

in the rule.

Rule 242, as proposed, requires perfor mance testing every 24 months.

Fiscal Impacts:

Cost to any source that needs to retrofit or replace existing units could be significant.

Other sources, whose engines are compliant wi ll incur added operati ng costs to perform biennial performance testing.

California Environmental Quality Act:

The District staff has determined that the ad option of this rule is categorically exempt from the California Environmental Quality Act (CEQA) requirements per the CEQA Guidelines, Section 15307, Actions by Regulat ory Agencies for Protection of Natural

Resources.

Public Outreach:

Public notice of the April hearing was pub lished in the newspape r on March 10, 2003. The draft rule and public notice was also made available on the District website.

The proposed rule and negative declaration we re provided to interest ed parties, the Air Resources Board (ARB) and the U.S. Environmental Protection Agency EPA.

An advisory of this hearing and proposed rule adoption was mailed to all permitted

sources that have stationary engines.Rule 242, Stationary Internal Combustion Engines

PCAPCD Board of Directors Agenda Date: April 10, 2003 Page 3

Recommendation:

Adoption of this control measure by 2004 is required in order for Placer County Air Pollution Control District (District) to be co mpliant with the SIP requirements. District staff recommend the approval of Resolu tion #03-05, thereby adop ting the Rule 242, Stationary Internal Combustion Engines

.

Attachment #1: Resolution #03-05 Thereby Adopting Rule 242, Stationary Internal Combustion Engines ; Exhibit 1, Rule 242, Stationary Internal Combustion Engines

Attachment #2 Staff Report: Rule 242, Stationary Internal Combustion Engines

[T:\APC\BOARD\RESOLUT.ION\RES03-05 RULE 242 IC ENGINE 04-10-03 MEMO.DOC]ATTACHMENT 1ATTACHMENT 2EXHIBIT I