### PLACER COUNTY

AIR POLLUTION CONTROL DISTRICT



# STAFF REPORT

RULE 242

STATIONARY INTERNAL COMBUSTION ENGINES

4/10/03Staff Report

Rule 242 Page 2

BACKGROUND

This proposed rule category is included as Nitrogen Oxide (NOx) and Carbon Monoxide (CO) control measures in the Sacramento Area Regional Ozone Attainment Plan, which was adopted by the Board on December 20, 1994. NO x emissions are Ozone precursors. The Attainment Plan was adopt ed in response to the 1990 Amendments to the Federal Clean Air Act (CAA), which requi red areas designated “serious” for Ozone by the United States Envi ronmental Protection Agency (USEPA), to submit a State Implementation Plan (SIP) revision. Adopt ion of this control measure by 2004 is required in order for Placer C ounty Air Pollution Control District (District) to be compliant with the SIP requirements.

This proposed rule was written after reviewing similar rules now in effect in other nearby California counties, specif ically El Dorado, Sacramento and Yolo-Solano. The standards proposed for Rule 24 are generally equi valent to the recently amended Rule
2.32 in Yolo-Solano AQMD. The Sacrament o Rule 412 for Stationary Internal Combustion (IC) Engines, adopted in June, 1995, applies only to Major Sources and is therefore not applicable when cons idering rule consistency among the nearby Districts. Placer County has no Stationary IC Engine Major Sources.

In April, 2002 the Air Resources Board (ARB) published a draft Air Toxics Control Measure (ATCM) that included suggested control limits on particulate emissions for stationary diesel engines. These limits were not included in this proposed Rule 242 because the proposed ATCM is an air toxic cont rol measure that is separate from the attainment plan.

Although the requirement for this rule is based on the Sacramento Area Regional Ozone Attainment Plan, the staff is recomm ending that the proposed rule be applicable for all of Placer County. This maintain s uniformity within the District and avoids the need for multiple rules within the County.

DISCUSSION OF PROPOSED RULE

Public notices of the proposed adoption of th is rule were published in local newspapers on March 10, 2003. The notice and draft rule were made available on the District's website. Advisory notices were mailed to the permitted sour ces that had engines, including exempt and non-exempt.

The majority of the stationary internal combustion engines in Placer County are emergency engines. These are typically emer gency generators, fire pumps or ski lift engines. These are exempt from this rule because NOx or CO emissions for the low number of hours normally in use are not significant.

This rule may affect engines at the following companies or parties:Staff Report

Rule 242 Page 3

Chevreax Aggregate, Meadow Vista City of Roseville, Waste Water Treatment Plant, 1800 Booth Road

Coherent Energy 2001

Hewlett Packard

NEC Electronics

Patterson Sand and Gravel

Robinson Sand and Gravel

Sierra Pacific Power

It is expected that Coherent, Hewlett Packa rd, NEC Electronics and Sierra Pacific Power may change their permit to operate conditi ons to limit operation of each engine to less than 200 hours per year to exempt their engines. Energy 2001 is not currently operating but has met the general standards during prior testing.

New stationary engines will be required to meet the best available control technology (BACT) pursuant to Rule 502, New Source Review, which will be more stringent than

the standards identified in this rule.

Purpose:

This Section, Section 101, st ates that the purpose is to limit the emission of NOx and CO from stationary internal combustion engines.

Applicability:

Section 102 states that the Rule applies to fa cilities located anywhere in Placer County. Specifically, the rule applies to any stati onary internal combustion engine rated at more than 50 horsepower. Engines pow ered by any gaseous fuel or liquid fuel (including liquefied petroleum gas, gasoline or diesel f uel) are included. Engines used exclusively for agricultural operations necessary for the growing of crops or the raising of fowl and animals are excluded from the provisions of this rule.

Exemptions:

Section 103 exempts engines operated le ss than 200 hours per calendar year, and those operating emergency standby power s ources. Emergency generators, fire pumps, flood control pumps, and backup ski li ft engines are exempt. Also exempted are: (1) engines used for research, testi ng and evaluation, (2) engines with a permitted capacity factor of 15% or less and (3) engines used to power cranes and welding equipment.

Definitions:

Seventeen key definitions are included.Staff Report

Rule 242 Page 4

Standards:

Section 301 - NOx and CO emi ssion limits are specified for rich burn engines, lean burn engines and diesel engines. Rich burn NOx lim it is 90 parts per million by volume (ppmv) and rich burn CO limit is 2000 ppm v. Lean burn NOx limit for engines greater than 100 hp is 150 ppmv and CO limit is 2000 ppmv. Lean burn NOx limit for engines equal to or less than 100 hp is 300 ppmv and CO limit is 2000 ppmv. Diesel engine limits are 600 ppmv for NOx and 2000 ppmv for CO. Existing diesel engines that require retrofit to meet t he standard are allowed a longer time for compliance with the proposed rule (see Administrative, below).

Section 302 requires an Engine Operation In spection Plan for any engine subject to the provisions of Section 301. The Plan s hall include equipment description, control systems (if any), company identification, location and procedures for emission inspection and maintenance.

In lieu of meeting the above emission lim its, the owner/operator may choose to permanently remove a stationary IC engine from service, or replace it with an electric motor. (See Administrative, Complianc e Schedule, Section 401.4, below.)

Section 301.4 requires non-resettable fuel consumption and non-resettable elapsed time meters for all engines subject to th is rule, including emergency standby engines operated less than 200 hours per year.

Administrative:

Section 401.1 - The effective date for comp liance is 90 days after adoption of the rule for new and existing engines meeting the standar ds as specified above. Operator inspection plans or support documentation s howing compliance are also required.

Section 401.2 - For engines r equiring retrofit to meet t he standards, inspection plans and support documentation are required by 90 days after adoption of the rule, and

construction of the necessa ry equipment and changes must be completed by July 1,

2004.

Section 401.3 requires that any owner/oper ator constructing a new or replacement engine after the date of adoption of this rule shall complete an application for Authority to Construct before beginning construction and shall demonstrate that the unit will be operated in compliance with all applicable provisi ons of this rule within 60 days after the date of initial startup

Section 401.4 requires specific compliance dates for permanently removing a stationary internal combustion engine or replacing it with an electric motorStaff Report

Rule 242 Page 5

Section 402 requires annual reports for permi tted units, specifying fuel consumption, actual operating hours, engine technical dat a, summary of maintenance and testing reports and an annual emissions report.

Section 403 requires quarterly screening analyse s using a portable NO x analyzer. Data obtained shall be reported to the District.

Section 404 requires an emission source test at least once every 24 months. Procedures, protocol and reporting are included.

Section 405 discusses violations and owner/operator responsibility

Monitoring and Recordkeeping:

Section 501 requires maintenanc e of operating inspection l ogs and lists the specific

information needed.

Section 502 lists specific recordkeeping r equirements for operators claiming exemption

under Section 103.

Section 503 discusses retention r equirements for operating records.

Section 504 lists appropriate test methods.Staff Report

Rule 242 Page 6

FINDING DEFINITION REFERENCE

Authority The District is permitted or required to adopt, amend, or repeal the rule by a provision of law or a state or federal regulation. California Health and Safety Code, Section 40702 and Section 41010; 1990 Federal Clean Air Act, Section 110(a)(2)(H) and Section 182(d).

Necessity The District has dem onstrated that a need exists for the rule, or for its amendment or repeal. It is necessary for the District to adopt this rule in order to fulfill the requirements of the

Federal Clean Air Act Amendments of 1990.

Clarity The rule is written or displayed so that its meaning can be easily understood by the persons directly affected by it. There is no indication at this time that the rule is not written in such a manner that the person affected by the rule can easily understand it.

Consistency The rule is in harm ony with, and not in conflict with or contradictory to, ex isting statutes, court decisions, or state or federal regulations. The District has found that the rule is consistent with existing state and federal guidelines, and rules in nearby Districts.

Non-duplication The rule does not impose the same requirements as an existing state or feder al regulation, unless the

District finds that the requirements are necessary or proper to execute the powers and duties granted to, and imposed upon the District. There does not exist any state or federal rule or regulation that applies to surface preparation and cleanup solvents operations

within the District.

Reference A ny statute, court decision, or other provision of law that the District implement s, interprets, or makes specific by adopting, amending, or repealing the rule. An example of this would be the 1988 EPA State Implementation Plan call to revise District

rules. This rule is being proposed because of the requirements of the Federal Clean Air Act

Amendments of 1990.