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ATCM FLOW CHART INTERNAL COMBUSTION ENGINES Version 1. 1 9/30/08 Select Fuel Type: Diesel ATCM FLOW CHART INTERNAL COMBUSTION ENGINES Version 1. 1 9/30/08 Select Fuel Type: Diesel and Alternative Diesel Created by: Jorge De. Guzman and Jeff Weiss Sacramento Metro AQMD Gasoline Gaseous Fuel Instructions Exit

INSTRUCTIONS 1. Navigate the flow charts by using the mouse and clicking on one INSTRUCTIONS 1. Navigate the flow charts by using the mouse and clicking on one of the options available 2. The cursor ( ) will change to a hand ( ) when the object is linked to another page. KEY = Links to a description of the term used = Links to a specific requirement of the ATCM ? = Links to more information = Links to an ATCM flow chart or or or = Links to a specific entry point within an ATCM = Goes back to the Main Menu = Exits the program = Links to a document Return to Main Menu

DIESEL AND ALTERNATIVE DIESEL ENGINES Please select the engine category that best describes the DIESEL AND ALTERNATIVE DIESEL ENGINES Please select the engine category that best describes the engine being reviewed Stationary Engines Portable Engines Off Road On Road Stationary Engine Portable or Transportable Engine Mobile Cargo Handling Equipment at Ports Heavy Duty Vehicles at Municipalities Auxiliary Marine Engine Mobile Cargo Handling Equipment at Intermodal Rail Yards Heavy Duty Vehicles at Utilities Commercial Motor Vehicles Return to Main Menu

GASOLINE OR GASEOUS FUEL ENGINES Please select the engine category that best describes the GASOLINE OR GASEOUS FUEL ENGINES Please select the engine category that best describes the engine being reviewed. For dual-fuel engines (i. e. designed to operate on a combination of diesel and a gaseous fuel) see Diesel-Fueled Engines Stationary Engines Portable Engines Off Road Distributive Generation Portable or Transportable Engine Mobile Cargo Handling Equipment at Ports Stationary Engine On Road On-Road Vehicles Mobile Cargo Handling Equipment at Intermodal Rail Yards Return to Main Menu

Auxiliary Marine Engines This source category is not subject to an ATCM Other Potentially Auxiliary Marine Engines This source category is not subject to an ATCM Other Potentially Applicable Regulations: Emission Limits and Requirements for Auxiliary Diesel Engines and Diesel-Electric Engines Operated on Ocean-Going Vessels within California Waters and 24 Nautical Miles of the California Baseline Regulation: or http: //www. arb. ca. gov/regact/marine 2005/fro 13. pdf Initial Statement of Reasons (Staff Report): Final Statement of Reasons: or or http: //www. arb. ca. gov/regact/marine 2005/isor. pdf http: //www. arb. ca. gov/regact/marine 2005/fsor. pdf Enforced by: ARB Contact: Paul Milkey, (916) 327 -2957 Return to Previous Page

Mobile Cargo Handling Equipment at Ports and Intermodal Rail Yards This source category is Mobile Cargo Handling Equipment at Ports and Intermodal Rail Yards This source category is not subject to an ATCM Other Potentially Applicable Regulations: Regulation for Mobile Cargo Handling Equipment at Ports and Intermodal Rail Yards Regulation: or Fact Sheet: or http: //www. arb. ca. gov/ports/cargo/documents/chefactsheet 0207. pdf http: //www. arb. ca. gov/regact/cargo 2005/revfro. pdf Final Statement of Reasons: or http: //arb. ca. gov/regact/cargo 2005/fsor. pdf Initial Statement of Reasons (Staff Report): or http: //arb. ca. gov/regact/cargo 2005/isor. pdf Enforced by: ARB Contact: Lisa Williams, (916) 327 -1498 Return to Previous Menu

On-Road Heavy-Duty Vehicles at Municipalities or Utilities Start Here Not subject to an ACTM On-Road Heavy-Duty Vehicles at Municipalities or Utilities Start Here Not subject to an ACTM Is it a regulated school bus? No Yes Go to school bus idling ATCM Other Potentially Applicable Regulations: Diesel Particulate Matter Control Measure for On-road Heavy-duty Diesel-fueled Vehicles Owned or Operated by Public Agencies and Utilities Regulation: or Fact Sheet: or http: //www. arb. ca. gov/msprog/publicfleetsfactsheet. pdf http: //www. arb. ca. gov/regact/dpmcm 05/revfro. pdf Final Statement of Reasons: or http: //www. arb. ca. gov/regact/dpmcm 05/revfsor. pdf Initial Statement of Reasons (Staff Report): or http: //www. arb. ca. gov/regact/dpmcm 05/isor. pdf Enforced by: ARB Contact: Ms. Gloria Linder, (916) 323 -2803 & Mr. Warren Hawkins (916) 324 -6771 Return to Previous Menu

ENGINES FIRED ON GASOLINE OR GASEOUS FUELS (Gasoline, Natural Gas, Propane, Waste Gas, etc. ENGINES FIRED ON GASOLINE OR GASEOUS FUELS (Gasoline, Natural Gas, Propane, Waste Gas, etc. ) Start Here Not subject to an ACTM No Is it a regulated school bus? Yes Go to school bus idling ATCM Other potentially applicable regulations include: New source review Other district-specific rules and regulations SB-700 – Permitting of Agricultural Sources Distributive Generation (if exempt from local permitting) Return to Previous Menu

? ATCM to Limit School Bus Idling and Idling at Schools Not subject to ? ATCM to Limit School Bus Idling and Idling at Schools Not subject to this ACTM Is it a regulated bus? No Yes Is it a school bus, a school activity bus, youth bus or a general paratransit vehicle? Yes Must turn off the engine upon stopping at a school or within 100 feet of a school, and must not turn the bus or vehicle engine on more than 30 seconds before beginning to depart from a school or from within 100 feet of a school; and Must not cause or allow a bus or vehicle to idle at any location greater than 100 feet from a school for: (i) more than five consecutive minutes; or (ii) a period or periods aggregating more than five minutes in any one hour. No Is it a transit bus or a commercial motor vehicle not identified above? No Idling Exemptions Must turn off the engine upon stopping at a school and must not turn the bus or vehicle engine on more than 30 seconds before beginning to depart from a school; and Yes Must not cause or allow a bus or vehicle to idle at any location within 100 feet of, but not at, a school for: (i) more than five consecutive minutes; or (ii) a period or periods aggregating more than five minutes in any one hour. Return to Main Menu

What is a regulated bus? Every school bus, transit bus, school pupil activity bus, What is a regulated bus? Every school bus, transit bus, school pupil activity bus, youth bus, general public paratransit vehicle, and other commercial motor vehicle as defined in CCR, Title 13, Section 2480(h). The ATCM does not apply to zero emission vehicles or pickup trucks. Idling Exemptions: The idling restrictions do not apply to: 1 Idling is necessary while stopped: A For an official traffic control device; B For an official traffic control signal; C For traffic conditions over which the driver has no control, including, but not limited to: stopped in a line of traffic; or D At the direction of a peace officer; 2 Idling is necessary to ascertain that the school bus, transit bus, school pupil activity bus, youth bus, general public aratransit vehicle, or p other commercial motor vehicle is in safe operating condition and equipped as required by all provisions of law, and all equipment is in good working order, either as part of the driver's daily vehicle inspection, or as otherwise needed; 3 Idling is necessary for testing, servicing, repairing, or diagnostic purposes; 4 Idling is necessary, for a period not to exceed three to five minutes (as per the recommendation of the manufacturer), to cool down a turbo -charged diesel engine before turning the engine off; 5 Idling is necessary to accomplish work for which the vehicle was designed, other than transporting passengers, for example: A Collection of solid waste or recyclable material by an entity authorized by contract, license, or permit by a school or local government; B Controlling cargo temperature; or C Coperating a lift, crane, pump, drill, hoist, mixer, or other auxiliary equipment other than a heater or air conditioner ; 6 Idling is necessary to operate: A A lift or other piece of equipment designed to ensure safe loading, unloading, or transport of persons with one or more disabilities; or B A heater or an air conditioner of a bus or vehicle that has, or will have, one or more children with exceptional needs aboard; 7 Idling is necessary to operate defrosters, heaters, air conditioners, or other equipment to ensure the safety or health of the driver or passengers, or as otherwise required by federal or State motor carrier safety regulations; or 8 Idling is necessary solely to recharge a battery or other energy storage unit of a hybrid electric bus or vehicle. Return to Flow Chart

ATCM to Limit School Bus Idling and Idling at Schools (Continued) Additional Information: Regulation: ATCM to Limit School Bus Idling and Idling at Schools (Continued) Additional Information: Regulation: or http: //www. arb. ca. gov/regact/sbidling/revfro. pdf Final Statement of Reasons: or http: //www. arb. ca. gov/regact/sbidling/fsor. pdf Initial Statement of Reasons (Staff Report): or http: //www. arb. ca. gov/regact/sbidling/isor. pdf Enforced by: ARB, peace officers (inc. CHP), and Districts ARB Contact: Kitty Howard (916) 322 -3984 Return to Flow Chart

ATCM to Limit Diesel-Fueled Commercial Motor Vehicle Idling Not subject to this ACTM No ATCM to Limit Diesel-Fueled Commercial Motor Vehicle Idling Not subject to this ACTM No Is it a commercial vehicle? ? Start Here Yes No Is it required to have a license for operation on highways? Must not operate a diesel-fueled auxiliary power system (APS) to power a heater, air conditioner, or any ancillary equipment on that vehicle during sleeping or resting in a sleeper berth for greater than 5. 0 minutes Yes Must not idle the vehicle's primary diesel engine for greater than 5. 0 minutes at any location Is it operating within 100 ft of a restricted area? No Idling Exemptions Return to Previous Page

What is a Commercial Vehicle? What is a Commercial Vehicle? "Commercial Motor Vehicle" means any vehicle or combination of vehicles defined in Vehicle Code Section 15210(b) and any other motor truck or bus with a gross vehicle weight rating of 10, 001 pounds or more, except the following: (A) a zero emission vehicle; or (B) a pickup truck as defined in Vehicle Code Section 471. Idling Exemptions: The idling restrictions do not apply to the period or periods which: 1. A bus is idling for A. Up to 10. 0 minutes prior to passenger boarding, or B. When passengers are onboard; 2. Idling of the primary diesel engine is necessary to power a heater, air conditioner, or any ancillary equipment during sleeping or resting in a sleeper berth. This provision does not apply when operating within 100 feet of a restricted area; 3. Idling when the vehicle must remain motionless due to traffic conditions, an official traffic control device, or an official traffic control signal over which the driver has no control, or at the direction of a peace officer, or operating a diesel-fueled APS at the direction of a peace officer; 4. Idling when the vehicle is queuing that at all times is beyond 100 feet from any restricted area; 5. Idling of the primary engine or operating a diesel-fueled APS when forced to remain motionless due to immediate adverse weather conditions affecting the safe operation of the vehicle or due to mechanical difficulties over which the driver has no control; 6. Idling to verify that the vehicle is in safe operating condition as required by law and that all equipment is in good working order, either as part of a daily vehicle inspection or as otherwise needed, provided that such engine idling is mandatory for such verification; 7. Idling of the primary engine or operating a diesel-fueled APS is mandatory for testing, servicing, repairing, or diagnostic purposes; 8. Idling when positioning or providing a power source for equipment or operations, other than transporting passengers or propulsion, which involve a power take off or equivalent mechanism and is powered by the primary engine for: A. Controlling cargo temperature, operating a lift, crane, pump, drill, hoist, mixer (such as a ready mix concrete truck), or other auxiliary equipment; B. Providing mechanical extension to perform work functions for which the vehicle was designed and where substitute alternate means to idling are not reasonably available; or C. Collection of solid waste or recyclable material by an entity authorized by contract, license, or permit by a school or local government; 9. Idling of the primary engine or operating a diesel-fueled APS when operating defrosters, heaters, air conditioners, or other equipment solely to prevent a safety or health emergency; 10. Idling of the primary engine or operating a diesel-fueled APS by authorized emergency vehicles while in the course of providing services for which the vehicle is designed; 11. Idling of military tactical vehicles during periods of training; and 12. Idling when operating equipment such as a wheelchair or people assisted lift as prescribed by the Americans with Disabilities Act; Return to Flow Chart

ATCM to Limit Diesel-Fueled Commercial Motor Vehicle Idling Additional Information: 13 CCR Chapter 10, ATCM to Limit Diesel-Fueled Commercial Motor Vehicle Idling Additional Information: 13 CCR Chapter 10, § 2485: ATCM to Limit Diesel-Fueled Commercial Motor Vehicle Idling Adopted: July 22, 2004 Regulation: or http: //www. arb. ca. gov/regact/idling/fro 1. pdf Fact Sheet: or http: //www. arb. ca. gov/msprog/truck-idling/factsheet. pdf Initial Statement of Reasons (Staff Report): Final Statement of Reasons: or http: //www. arb. ca. gov/regact/idling/isor. pdf or http: //www. arb. ca. gov/regact/idling/fsor. pdf Enforced by: ARB, peace officers (inc. CHP), and Districts ARB Contact: John Gruszecki (916) 327 -5601 Staff Contact: John Gruszecki, (916) 327 -5601 Return to Flow Chart

ENGINES FIRED ON ALTERNATIVE DIESEL FUEL Start Here Not subject to an ACTM Yes ENGINES FIRED ON ALTERNATIVE DIESEL FUEL Start Here Not subject to an ACTM Yes Does it contain less than 5 parts diesel fuel to 100 parts total fuel on an energy equivalent basis? Go to Portable Engine ATCM No Yes Is it a dual-fuel diesel pilot engine? No Return to Main Menu

PORTABLE/TRANSPORTABLE ENGINES ? Start Here Is it rated at 50 hp or greater? No PORTABLE/TRANSPORTABLE ENGINES ? Start Here Is it rated at 50 hp or greater? No Yes Is it used to propel mobile equipment or a motor vehicle? Not subject to this ATCM. Check on-road and off-road ATCMs Yes Note: All ag engines (except for rental equipment) are considered stationary engines. Click here for more info or continue to Ag engine Page Has the airline demonstrated ATCM equivalency to ARB? Yes Yes No No Go to Ag Engine Page No Is it portable? Is it an agricultural engine? No Go to Stationary IC Engine ATCM Yes Yes Go to Portable IC Engine ATCM Not subject to an ACTM Is it used on San Clemente or San Nicolas islands? No Yes Is it preempted from state regs by 42 USC § 7543(e)(1)? No Is it tactical support equipment? No Is it subject to SCAQMD Ground Service Equip. MOU? No Return to Main Menu

What is a Portable Engine? An engine designed and capable of being carried or What is a Portable Engine? An engine designed and capable of being carried or moved from one location to another. Indicia of portability include, but are not limited to, wheels, skids, carrying handles, dolly, trailer, or platform. For the purposes of this regulation, dredge engines on a boat or barge are considered portable The engine is not portable if: 1. • • The engine or its replacement is attached to a foundation, or if not so attached, will reside at the same location for more than 12 consecutive months. The period during which the engine is maintained at a storage facility shall be excluded from the residency time determination. Any engine, such as a back-up or stand-by engine, that replace ngine(s) at a e location, and is intended to perform the same or similar function as the engine(s) being replaced, will be included in calculating the consecutive time period. In that case, the cumulative time of all engine(s), including the time between the removal of the original engine(s) and installation of the replacement engine(s), will be counted toward the consecutive time period; or the engine remains or will reside at a location for less than 12 consecutive months if the engine is located at a seasonal source and operates during the full annual operating period of the seasonal source, where a seasonal source is a stationary source that remains in a single location on a permanent basis (at least two years) and that operates at that single location at least three months each year; or the engine is moved from one location to another in an attempt to circumvent the portable residence time requirements. What is a Dual-fuel Diesel Pilot Engine? An engine that uses diesel fuel as a pilot ignition source at an annual average ratio of less than 5 parts diesel fuel to 100 parts total fuel on an energy equivalent basis. What is Tactical Support Equipment? Equipment using a portable engine, including turbines, that meets military specifications, owned by the U. S. Department of Defense and/or the U. S. military services or its allies, and used in combat, combat support, combat service support, tactical or relief operations, or training for such operations. Examples include, but are not limited to, engines associated with portable generators, aircraft start carts, heaters and lighting carts. Return to Previous Page

TITLE 42 --THE PUBLIC HEALTH AND WELFARE CHAPTER 85 --AIR POLLUTION PREVENTION AND CONTROL TITLE 42 --THE PUBLIC HEALTH AND WELFARE CHAPTER 85 --AIR POLLUTION PREVENTION AND CONTROL SUBCHAPTER II--EMISSION STANDARDS FOR MOVING SOURCES Part A--Motor Vehicle Emission and Fuel Standards Sec. 7543. State standards (e) Nonroad engines or vehicles (1) Prohibition on certain State standards No State or any political subdivision thereof shall adopt or attempt to enforce any standard or other requirement relating to the control of emissions from either of the following new nonroad engines or nonroad vehicles subject to regulation under this chapter– (A) New engines which are used in construction equipment or vehicles or used in farm equipment or vehicles and which are smaller than 175 horsepower. (B) New locomotives or new engines used in locomotives. Subsection (b) of this section shall not apply for purposes of this paragraph. Complete Section: : or http: //frwebgate. access. gpo. gov/cgi-bin/getdoc. cgi? dbname=browse_usc&docid=Cite: +42 USC 7543 Return to Flow Chart

PORTABLE ENGINE ATCM Start Here No Is the engine using CARB diesel, or a PORTABLE ENGINE ATCM Start Here No Is the engine using CARB diesel, or a verified alternative diesel? No No Is it allowed under the flexibility provisions of 40 CFR, Part 89 or Title 13? Not in compliance with ATCM Yes Is the engine using a fuel additive? Yes Go to Tier 0 Engines Yes Has the additive been certified as per ATCM? No Yes Was an application filed ≤ 6 months from the tier change? Was an application received before 01/01/2010? Yes View ATCM Fleet Requirements No Is it used only for emergency applications? Was the engine ordered ≤ 6 months prior to the most recent tier change? No Yes No Is it a Tier 0 engine? Is it a dealer owned stock engine meeting the preceding tier standard? No Yes ? No No Is it a low use engine? Yes By 1/1/20 it must be replaced with a Tier 4 engine, retrofitted with level 3 retrofit or reduce emissions by 85% with verified technology Yes Not in compliance with ATCM Yes No Did it operate in California between 3/4/04 and 10/1/06? Yes Is it certified to latest standards? No Was it registered or permitted before 1/1/06? No Done Return to Main Menu Return to Previous Page

What is an Alternative Diesel Fuel? Any fuel used in a compression ignition (CI) What is an Alternative Diesel Fuel? Any fuel used in a compression ignition (CI) engine that is not, commonly or commercially known, sold or represented by the supplier as diesel fuel No. 1 -D or No. 2 -D, pursuant to the specifications in ASTM Standard Specification for Diesel Fuel Oils D 975 -81, or an alternative fuel, and does not require engine or fuel system modifications for the engine to operate, although minor modifications (e. g. , recalibration of the engine fuel control) may enhance performance. An emission control strategy using a fuel additive will be treated as an alternative diesel fuel based strategy unless: (1) the additive is supplied to the engine fuel by an on-board dosing mechanism, or (2) the additive is directly mixed into the base fuel inside the fuel tank of the engine, or (3) the additive and base fuel are not mixed until engine fueling commences, and no more additive plus base fuel combination is mixed than required for a single fueling of a single engine. What is a Fuel Additive? Any substance designed to be added to fuel or fuel systems or other engine-related systems such that it is present in-cylinder during combustion and has any of the following effects: decreased emissions, improved fuel economy, increased performance of the engine; or assists diesel emission control strategies in decreasing emissions, or improving fuel economy or increasing performance of the engine. Fuel additives used in conjunction with diesel fuel may be treated as an alternative diesel fuel . What is a Low-Use Engine? A portable diesel-fueled engines that operates 80 hours or less in a calendar year. Return to Flow Chart

? PORTABLE ENGINE ATCM – TIER 0 ENGINES Yes Did it operate in California ? PORTABLE ENGINE ATCM – TIER 0 ENGINES Yes Did it operate in California between 3/1/04 and 10/1/06? Start here Is the engine currently permitted or registered? No Yes Is it used only for emergency applications? Not in compliance with ATCM Is it a low-use engine? No Will the local district allow the use of Tier 0 engines? No No Refer to local district policy for unpermitted Tier 0 engines Yes By 1/1/20 it must be replaced with a Tier 4 engine, retrofitted with level 3 retrofit or reduce emissions by 85% with verified technology No Is it used in a lattice boom crane? Yes Has the demonstration been made pursuant to § 93116. 3(b)(4)(A)? Yes Done Return to Main Menu No No Yes Will it be replaced by a Tier 4 within 2 years of Tier 4 introduction? Yes No Operation allowed until 1/1/10 Operation allowed until 2 years after introduction of Tier 4 units No Is the replacement specified in writing in advance? Yes Return to Portable Engines Main Menu

§ 93116. 3 Requirements (b) Diesel PM Standards (4) Lattice boom cranes (A) A § 93116. 3 Requirements (b) Diesel PM Standards (4) Lattice boom cranes (A) A portable diesel-fueled engine used in a lattice boom crane shall be exempt from the requirements of section 93116. 3(b)(1)(A) if the Responsible Official has demonstrated to the satisfaction of the Executive Officer or the APCO that the portable diesel-fueled engine in the lattice boom crane cannot be replaced with a portable diesel-fueled engine that is certified to meet a federal or California standard for newly manufactured nonroad engines pursuant to 40 CFR Part 89 or Title 13 of the California Code of Regulations (that is, certified to Tier 1, 2 or 3 nonroad engine standards). Replacing a Tier 0 Engine with a Tier 4 Engine: In lieu of complying with (b)(1)(A), owners of portable diesel-fueled engines used exclusively in emergency applications or portable diesel-fueled engines that qualify as low-use engines may commit to replacing these engines with Tier 4 engines, subject to the requirements below: 1. 2. the Responsible Official shall submit written notification identifying the specific portable diesel-fueled engines to be replaced with portable diesel-fueled engines certified to the Tier 4 emission standards; and for each class and category of nonroad engine, replace each portable diesel-fueled engine so identified within two years of the first engine being offered for sale that satisfies the Tier 4 emission standards. Return to Flow Chart

? PORTABLE ENGINE ATCM FLEET STANDARDS Start Here Type of engine? Fleet Engine Not ? PORTABLE ENGINE ATCM FLEET STANDARDS Start Here Type of engine? Fleet Engine Not regulated by ATCM fleet requirements Fleet Exempt Continue to Entry Point #1 ATCM Exempt Is engine used for emergency operations but future use may include non-emergency operations? Yes Engine is immediately subject to fleet standards when used in non-emergency capacity Continue to Entry Point #2 Is engine a low-use engine but future use may exceed allowed hours of operation? Yes Done Return to Main Page Yes Does it operate ≥ 100 hours/year? Yes No No No Diesel PM rate is calculated as 0 for this engine No No Is engine fueled with alternative fuels? Yes Was it added to the fleet before 1/1/09 and does meet latest tier standards? Does owner wish to include unit in fleet average? No Continue to Entry Point #3 Engine is immediately subject to fleet standards when allowed hours are exceeded Return to Previous Page

? PORTABLE ENGINE ATCM FLEET STANDARDS (Continued) Entry Point #1 Is the engine equipped ? PORTABLE ENGINE ATCM FLEET STANDARDS (Continued) Entry Point #1 Is the engine equipped with SCR? No No No Is it a Tier 4 engine 4 Yes Has ARB exempted the unit from fleet requirements? Was it added before 1/1/15? No Does it have a Level 3 retrofit, or have a retrofit to reduce PM by 85%? Was it installed prior to 1/1/04? Yes No Yes Yes No No Yes Test results for NOx, PM, and NH 3 slip must be submitted at least every 3 years Entry Point #2 Did the equipment use more than 200 hrs of grid power in lieu of the engine for a given project? Engine may be counted twice in fleet calculations for 2013 and 2017 Engine emission factor may be offset Engine becomes an irrevocable participant in fleet calculations Recordkeeping requirements apply Record-keeping applies Entry Point #3 Yes Engine is subject to fleet standards No Does company wish to include engine in fleet? Not regulated by ATCM fleet requirements Done Return to Main Menu Return to Previous Page

? ATCM FLEET STANDARDS PM Fleet Standards Applicable Fleet Average for All Engines Within ? ATCM FLEET STANDARDS PM Fleet Standards Applicable Fleet Average for All Engines Within Each HP Range Compliance Date Less than 175 hp (g/bhp-hr) 175 hp to 749 hp (g/bhp-hr) 750 hp or Greater (g/bhp-hr) 01/01/2013 0. 15 0. 25 01/01/2017 0. 18 0. 08 01/01/20020 0. 04 0. 02 The average PM emission rate from all engines within a horsepower range must meet the above standards by the specified dates. Return to Previous Page

PORTABLE ENGINE ATCM Additional Information: 17 CCR 93116 ATCM for Diesel Particulate Matter from PORTABLE ENGINE ATCM Additional Information: 17 CCR 93116 ATCM for Diesel Particulate Matter from Portable engines Rated at 50 HP and Greater Adopted: February 26, 2004 Webpage: Regulation: http: //www. arb. ca. gov/diesel/peatcm. htm or http: //www. arb. ca. gov/portable/perp/peatcm 091207. pdf Final Statement of Reasons (Staff Report): or http: //www. arb. ca. gov/regact/2007/perp 07/fsor. pdf CARB letter regarding portable engines at agricultural sources: CARB cover letter for Districts Re: Portable Engines at Agricultural Sources: Enforced by: Districts and ARB – fleet compliance reporting is directly to ARB Contact: Grant Chin (916) 327 -5602 gchin@arb. ca. gov. Return to Flow Chart

STATIONARY ENGINE ATCM Additional Information: 17 CCR 93115: ATCM for Stationary Compression Ignition Engines STATIONARY ENGINE ATCM Additional Information: 17 CCR 93115: ATCM for Stationary Compression Ignition Engines Adopted: February 26, 2004; Revised, effective October 18, 2007 Webpage: Regulation: http: //www. arb. ca. gov/regact/agen 06. htm or http: //www. arb. ca. gov/diesel/ag/documents/finalreg 101807. pdf Final Statement of Reasons (Staff Report): Initial Statement of Reasons for Ag Engines: or or http: //www. arb. ca. gov/regact/agen 06/fsor. pdf http: //www. arb. ca. gov/regact/agen 06/isor. pdf Enforced by: Districts and ARB Contact: Ron Hand (916) 327 -6683 rhand@arb. ca. gov Return to Flow Chart

What’s a Fleet Engine? Any portable engine or group of portable engines that are What’s a Fleet Engine? Any portable engine or group of portable engines that are owned and managed by an individual operational entity, such as a business, business unit within a corporation, or individual city or state department under the control of a Responsible Official. Engines that are owned by different business entities that are under the common control of only one Responsible Official shall be treated as a single fleet. What’s a Fleet Exempt Engine? Any portable engine that cannot be included when calculating the average PM emissions for the fleet: Engines not Included in the Fleet Standard Engines operated exclusively outside California Engines operated only within the Outer Continental Shelf Engines used exclusively in emergency applications Engines qualifying as low-use engines Engines used in a lattice boom crane What’s an ATCM Exempt Engine? All non-portable engines and any portable engine not subject to the ATCM. Most ATCM Exempt Engines are not subject to fleet standards. However, the owner of a non-diesel fired engine may choose to include said engine in its fleet in order to lower the fleet’s average PM emission rate. Return to Main Menu

STATIONARY ENGINES Start Here Is it rated at 50 hp or greater? No Go STATIONARY ENGINES Start Here Is it rated at 50 hp or greater? No Go to Ag Engine Page Yes Is it an agricultural engine? Yes Go to Portable IC Engine ATCM No Is it portable? No Is it a single cylinder cetane testing engine? Yes Not subject to this ATCM. Check on-road and off-road ATCMs Is it used to propel mobile equipment or a motor vehicle? No Yes Is it a new engine being sold, offered for sale, or leased? No Not subject to ACTM Yes Is it a test engine exempted by the District? Yes No Engine in Compliance with ATCM No Return to Main Page Yes Engine eligibility shall be reviewed every 5 years No Yes No No Yes Done Is it used only in San Clemente or San Nicolas islands? Is it an auxiliary engine on a marine vessel? Does it meet the latest Tier standards? Go to Auxiliary Marine Engines ? Engine Not Allowed Go to Standby Engine Page Is it a dual fueled pilot engine that uses diesel and digester or landfill gas? No Is it an emergency standby engine? Yes No Go to Prime Engine Page Return to Previous Page

STATIONARY EMERGENCY STANDBY ENGINES Continued from Previous Page Done Return to Main Page Engine STATIONARY EMERGENCY STANDBY ENGINES Continued from Previous Page Done Return to Main Page Engine is in Compliance with ATCM Is it used solely on a OCS platform within 25 ml of California seaward boundary? Yes Engine Not Allowed No Must comply with § 93115. 6(b)(1) and § 93115. 6(b)(2) Is it an in-use, emergency standby unit at a nuclear facility subject to USNRC? No Yes Is it using only CARB diesel, biodiesel, or an alternate as specified in § 93115. 5? Yes Continue to Next Page Yes No Engine is in Compliance with ATCM Done Return to Main Page Engine is not allowed to operate in response to rolling blackout unless the criteria in § 93115. 6(a)(2), (b)(1), (c)(1)(B), or (c)(2)(B) as appropriate are met No Go to Prime Power Engine Page Yes Is it used only for safe shutdown and maintenance of the plant during power failure? No No Yes Is it used no more than 200 hrs/yr for maintenance and testing? Is it used by DOD at a Command Destruct (CT) Site? Does not qualify as an emergency standby engine ? Engine can operate during emergencies and, prior to 1/1/2010, up to 100 hrs/year for testing and maintenance. Is it within 500 feet of a school? Yes Continue to Entry Point #4 Entry Point #5 Return to Stationary Engines Main Page

? STATIONARY EMERGENCY STANDBY ENGINES (continued) No Continued from Previous Page Go to Entry ? STATIONARY EMERGENCY STANDBY ENGINES (continued) No Continued from Previous Page Go to Entry Point #6 Is it located in San Diego County? Must comply with fuel requirements as per § 93115. 5 Yes No Was it enrolled between 1/1/05 and 1/1/08? No Must comply with Table 2 Is it an in-use engine with SCR? Was engine installed prior to 1/1/05? Is it Yes used in Yes Demand Response Program Was (DRP)? it enrolled before 1/1/05? No Yes Continue to Next Page Yes No The sum of total RBRP load dispatched must not exceed 80 MW at any time and units must be dispatched as per SDGE protocol Engine allowed 100 hrs/yr for maintenance & testing Must meet standards for new prime power engines (see Table 3) No Was it enrolled between 1/1/05 and 1/1/08? Yes Must meet PM ≤ 0. 15 g/hp-hr Must meet PM ≤ 0. 01 g/hp-hr Engine will remain subject to § 93115. 6(c) even when no longer under a DRF Go to Entry Point #5 Is it within 500 feet of a school? Yes No Continue to Entry Point #4 Engine allowed 75 hrs/yr for RBRP No Must meet standards for new emergency standby engines (see Table 1) Must meet hour limitations in Table 2 Return to Standby Engines Main Page

STATIONARY EMERGENCY STANDBY ENGINES (continued) Continued from Previous Page Is it an exempt NASA STATIONARY EMERGENCY STANDBY ENGINES (continued) Continued from Previous Page Is it an exempt NASA engine per § 93115. 3(o) No Must comply with Table 2 Is it going to be removed from service by 1/1/09 per an OSHPD compliance plan? Yes ? Go to Entry Point #5 Yes No Is it within 500 feet of a school? No No Is it a dual fueled pilot engine that uses diesel and digester or landfill gas? No Yes Does the engine qualify for an exemption under § 93115. 3(d)? No Must comply with fuel requirements as per § 93115. 5 Yes Yes Does it have an SCR? Must comply with Table 1 Go to Entry Point #4 Done Return to Main Menu No Was it installed ≥ 1/1/05? Yes No Is it a direct drive fire pump? Yes Must meet the standards for direct-drive fire pumps and it shall only operate for emergencies, to comply with NFPA-25, or for emissions testing Return to Standby Engines Main Page

? STATIONARY EMERGENCY STANDBY ENGINES (continued) Entry Point #6 Yes Engine will remain subject ? STATIONARY EMERGENCY STANDBY ENGINES (continued) Entry Point #6 Yes Engine will remain subject to § 93115. 6(c) even when no longer under a DRF Is it an in-use engine with SCR? Yes No Was engine. No installed prior to 1/1/05? Was it enrolled before 1/1/05? Is it within 500 feet of a school? Engine allowed 100 hrs/yr for maintenance & testing Yes No Go to Entry Point #4 No Yes Must meet standards for new prime power engines (see Table 3) No Was it enrolled between 1/1/05 and 1/1/08? Go to Entry Point #5 No Engine allowed 150 hrs/yr for ISC Operation Must meet PM ≤ 0. 01 g/hp-hr Must meet hour limitations in Table 2 Yes Must meet PM ≤ 0. 15 g/hp-hr Return to Standby Engines Main Page

? Emission Standards for Direct-Drive Fire Pumps Engine Power 50 ≤ hp < 75 ? Emission Standards for Direct-Drive Fire Pumps Engine Power 50 ≤ hp < 75 Installation Date Applicable Emission Standards (grams/bhp-hr) Tier CO HC NMHC+NOx PM 0. 3 Tier 3 3. 7 - 3. 5 - -† Tier 4 3. 7 < 1/1/2011 Tier 2 3. 7 - 5. 6 - 0. 3 Tier 3 3. 7 - 3. 5 - -† Tier 4 3. 7 0. 14 0. 3 0. 015 < 1/1/2010 Tier 2 3. 7 - 4. 9 - 0. 22 Tier 3 3. 7 - 3. 0 - -† ≥ 1/1/2015 Tier 4 3. 7 0. 14 0. 3 0. 015 < 1/1/2009 Tier 2 2. 6 - 4. 9 - 0. 15 ≥ 1/1/2009 Tier 3 2. 6 - 3. 0 - -† ≥ 1/1/2014 Tier 4 2. 6 0. 14 0. 3 0. 015 < 1/1/2009 Tier 2 2. 6 - 4. 8 - 0. 15 ≥ 1/1/2009 Tier 3 2. 6 - 3. 0 - -† ≥ 1/1/2014 Tier 4 2. 6 0. 14 0. 3 0. 015 < 1/1/2011 Tier 2 2. 6 - 4. 8 - 0. 15 ≥ 1/1/2011 Tier 3 2. 6 - 3. 0 - -† ≥ 1/1/2014 Tier 4 2. 6 0. 14 0. 3 0. 015 < /1/2006 Tier 1 8. 5 1. 0 - 6. 9 0. 15 ≥ 1/1/2006 hp ≥ 750 - ≥ 1/1/2010 600 ≤ hp < 750 5. 6 ≥ 1/1/2015 300 ≤ hp < 600 - ≥ 1/1/2011 175 ≤ hp < 300 3. 7 ≥ 1/1/2013 100 ≤ hp < 175 Tier 2 ≥ 1/1/2011 75 ≤ hp < 100 < 1/1/2011 Tier 2 2. 6 - 4. 8 - 0. 15 3. 5 0. 022 † Not adopted, engines must meet Tier 2 PM standard. Return to Previous Page

Table 1 Operation Limitations and Emission Standards for New Emergency, Standby Engines > 50 Table 1 Operation Limitations and Emission Standards for New Emergency, Standby Engines > 50 bhp Maximum Allowed Hours of Operation PM Standards (g/bhp-hr) Testing to Show Compliance and Emergency Use Maintenance and Testing ≤ 0. 15 Not limited 50 hours/year ≤ 0. 01 Not limited 51 -100 hours/year ? HC, NOx, NMHC+NOx, & CO Standards (g/bhp-hr) Off-road CI Engine Certification Standard for an off-road engine of the model year and maximum rated power. Tier 1 applies if no standards have been established. Table 2 Operation Limitations and Emission Standards for In-Use Emergency, Standby Engines > 50 bhp PM Standards (g/bhp-hr) Maximum Allowed Hours of Operation HC, NOx, NMHC+NOx, & CO Standards (g/bhp -hr) Emergency Use and Testing to Show Compliance Maintenance and Testing > 0. 40 Not limited by ATCM 20 ** hours/year Not limited by ATCM > 0. 15 to ≤ 0. 40 Not limited by ATCM 21 -30 ** hours/year > 0. 01 to ≤ 0. 15 Not limited by ATCM 31 to 50 hours/year ≤ 0. 01 Not limited by ATCM 51 to 100 hours/year For engines with emissions control strategies that are not verified, engines must meet the offroad CI Engine Certification Standard for an offroad engine of the model year and maximum rated power of the engine OR Tier 1 standard if no standard has been instituted OR no increase in CO above 10% from baseline PLUS either no increase in HC or NOx above 10% of baseline or no increase of NMHC+NOx emissions above baseline. ** 40 hours/year are allowed at health facilities for maintenance and testing. In-use, direct-drive, emergency fire pumps are not subject to the above maintenance and testing restrictions provided the engines are only operated during emergencies or to comply with the testing requirements of NFPA 25 “Standard for the Inspection, Testing, and Maintenance of Water-Based Protection Systems, ” 2002 edition. Return to Previous Page

? Table 3 New Prime Power Engines* HC, NOx, NMHC+NOx, & CO Standards (g/bhp-hr) ? Table 3 New Prime Power Engines* HC, NOx, NMHC+NOx, & CO Standards (g/bhp-hr) PM Standard (g/bhp-hr) Meet the more stringent of ≤ 0. 01 or the Off-Road CI Engine Certification Standard for an off-road engine of the same maximum power. Off-Road CI Engine Certification Standard for an off-road engine of the model year and maximum rated power of the engine or Tier 1 standards if no standard has been established. * New is defined as installed after 1 -1 -05 Table 4 In-Use Prime Power Engines Applicability PM Standard (g/bhp-hr) HC, NOx, NMHC+NOx, & CO Standards (g/bhp-hr) Off-road PM certified inuse engines PM ≤ 0. 01 or 85% reduction from baseline For engines with emissions control strategies that are not verified, engines must meet the off-road CI Engine Certification Standard for an off-road engine of the model year and maximum rated power of the engine OR Tier 1 standard if no standard has been instituted OR no increase in CO above 10% from baseline PLUS either no increase in HC or NOx above 10% of baseline or no increase of NMHC+NOx emissions above baseline. Only in-use engines NOT certified with the Off-Road CI PM Standard PM ≤ 0. 01 or 85% reduction from baseline or 30% reduction from baseline plus PM ≤ 0. 01 no later than 7 -1 -11 Return to Previous Page

EPA Tier Standards Engine Power Effective Year Applicable Emission Standards (grams/bhp-hr) Tier Pre-1998 Tier EPA Tier Standards Engine Power Effective Year Applicable Emission Standards (grams/bhp-hr) Tier Pre-1998 Tier 0 1998 Tier 1 50 ≤ hp < 75 2004 Tier 2 2008 Tier 3 2013 Tier 4 Pre-1998 Tier 0 1998 Tier 1 75 ≤ hp < 100 2004 Tier 2 2008 Tier 3 2012 -2014 Tier 4 Pre-1997 Tier 0 1997 Tier 1 2003 Tier 2 100 ≤ hp < 175 2007 Tier 3 2012 -2014 Tier 4 Pre-1996 Tier 0 1996 Tier 1 2003 Tier 2 175 ≤ hp < 300 2006 Tier 3 2011 -2014 Tier 4 Pre-1996 Tier 0 1996 Tier 1 2001 Tier 2 300 ≤ hp < 600 2006 Tier 3 2011 -2014 Tier 4 Pre-1996 Tier 0 1996 Tier 1 600 ≤ hp < 750 2002 Tier 2 2006 Tier 3 2011 -2014 Tier 4 Pre-2000 Tier 0 2000 Tier 1 hp ≥ 750 † Not adopted, engines must meet Tier 2 PM standard. 2006 Tier 2 † Not adopted, engines must meet Tier 2 PM standard. CO HC NMHC+NOx PM 3. 7 3. 7 8. 5 2. 6 2. 6 8. 5 2. 6 - 5. 6 3. 5 6. 9 - 0. 3 0. 22 0. 022 0. 3 -† 0. 015 0. 22 -† 0. 015 0. 4 0. 15 -† 0. 015 0. 14 1. 0 - 4. 9 3. 0 4. 8 6. 9 0. 3 6. 9 Return to Previous Page

What is an Emergency Standby Engine? What is an Emergency Standby Engine? "Emergency Standby Engine" means a stationary engine that meets the criteria specified in (A) and (B) and any combination of (C) or (D) or (E) below: (A) is installed for the primary purpose of providing electrical power or mechanical work during an emergency use and is not the source of primary power at the facility; and (B) is operated to provide electrical power or mechanical work during an emergency use; and (C) is operated under limited circumstances for maintenance and testing, emissions testing, or initial start-up testing, as specified in sections 93115. 6(a), (b), and (c); or (D) is operated under limited circumstances in response to an impending outage, as specified in sections 93115. 6(a), (b), and (c); or (E) is operated under limited circumstances under a DRP as specified in section 93115. 6(c). What is Emergency Use? “Emergency Use" means providing electrical power or mechanical work during any of the following events and subject to the following conditions: (A) the failure or loss of all or part of normal electrical power service or normal natural gas supply to the facility: 1. which is caused by any reason other than the enforcement of a contractual obligation the owner or operator has with a third party or any other party; and 2. which is demonstrated by the owner or operator to the district APCO's satisfaction to have been beyond the reasonable control of the owner or operator; (B) the failure of a facility's internal power distribution system: 1. which is caused by any reason other than the enforcement of a contractual obligation the owner or operator has with a third party or any other party; and 2. which is demonstrated by the owner or operator to the district APCO's satisfaction to have been beyond the reasonable control of the owner or operator; (C) the pumping of water or sewage to prevent or mitigate a flood or sewage overflow; (D) the pumping of water for fire suppression or protection; (E) the powering of ALSF-1 and ALSF-2 airport runway lights under category II or III weather conditions; (F) the pumping of water to maintain pressure in the water distribution system for the following reasons: 1. a pipe break that substantially reduces water pressure; or 2. high demand on the water supply system due to high use of water for fire suppression; or 3. the breakdown of electric-powered pumping equipment at sewage treatment facilities or water delivery facilities; or (G) the day-of-launch system checks and launch tracking performed (in parallel with grid power) by the United States Department of Defense at Command Destruct sites (also known as "CT" sites) that occur within the 24 -hour time period associated with the scheduled time of the launch. Return to Previous Page

93115. 3(d) The requirements specified in sections 93115. 6(b)(3) and 93115. 7(b)(1) do not 93115. 3(d) The requirements specified in sections 93115. 6(b)(3) and 93115. 7(b)(1) do not apply to in-use stationary diesel-fueled Cl engines used in emergency standby or prime applications that, prior to January 1, 2005, were required in writing by the district to meet and comply with either minimum technology requirements or performance standards implemented by the district from the "Risk Management Guidance for the Permitting of New Stationary Diesel-Fueled Engines, " October 2000, which is incorporated herein by reference. Return to Previous Page

93115. 5 – Fuel and Fuel Additive Requirements for New and In-Use Stationary CI 93115. 5 – Fuel and Fuel Additive Requirements for New and In-Use Stationary CI Engines That Have A Rated Horsepower of Greater than 50 (>50 hp) (a) (1) CARB Diesel Fuel; or (2) an alternative diesel fuel that is: (A) biodiesel; (B) a biodiesel blend that does not meet the definition of CARB Diesel Fuel; (C) a Fischer-Tropsch fuel; or (D) an emulsion of water in diesel fuel; or (3) any alternative diesel fuel that is not identified in section 93115. 5(a)(2) above and meets the requirements of the Verification Procedure; or (4) an alternative fuel; or (5) CARB Diesel Fuel used with fuel additives that meets the requirements of the Verification Procedure; or (6) any combination of 93115. 5(a)(1) through (5) above. (b) As of January 1, 2006, except as provided for in section 93115. 3, no owner or operator of an in-use emergency standby stationary diesel-fueled Cl engine shall add to the engine or any fuel tank directly attached to the engine any fuel unless the fuel is one of the following: (1) CARB Diesel Fuel; or (2) an alternative diesel fuel that is: (A) biodiesel; (B) a biodiesel blend that does not meet the definition of CARB Diesel Fuel; (C) a Fischer-Tropsch fuel; or (D) an emulsion of water in diesel fuel; or (3) any alternative diesel fuel that is not identified in section 93115. 5(b)(2) above and meets the requirements of the Verification Procedure; or (4) an alternative fuel; or (5) CARB Diesel Fuel used with fuel additives that meets the requirements of the Verification Procedure; or (6) any combination of 93115. 5(b)(1) through (5) above. Return to Previous Page

STATIONARY EMERGENCY STANDBY ENGINES NEAR SCHOOLS ? Entry Point #4 Does the engine emit STATIONARY EMERGENCY STANDBY ENGINES NEAR SCHOOLS ? Entry Point #4 Does the engine emit PM ≤ 0. 01 g/hp-hr? Yes Continue to Entry Point #5 No Is it at or near a boarding school? Yes No Engine may not operate between 7: 30 am to 3: 30 pm on days when school is in session. No Is it located on school grounds? Yes Engine may not operate for maintenance during school sponsored activities. Return to Previous Page

PRIME POWER STATIONARY ENGINES Continue from Previous Page Done Go to Next Page Return PRIME POWER STATIONARY ENGINES Continue from Previous Page Done Go to Next Page Return to Main Page Is it a prime power engine used only to train military personnel on the operation and repair of DOD engines? Engine is in Compliance with ATCM Is it used only in San Clemente or San Nicolas islands? Yes No Engine Not Allowed No No Yes Is it used solely on a OCS platform within 25 ml of Cal. Seward boundary? Is it > 500 ft from a school ? Yes Has the district granted exemption from emissions standards? Is it an in-use, low-use prime engine that operates ≤ 20 hrs/yr? Yes No No Engine eligibility shall be reviewed every 5 years No ? Is it using only CARB diesel, biodiesel, or an alternate as specified in § 93115. 5? Yes Go to Standby Engine Page Is it an in-use, emergency standby unit at a nuclear facility subject to USNRC? No Return to Previous Page

STATIONARY ENGINES (continued) Is it using only CARB diesel, biodiesel, or an alternate as STATIONARY ENGINES (continued) Is it using only CARB diesel, biodiesel, or an alternate as specified in § 93115. 5? Yes No Is it an in-use engine? Is it an exempt NASA engine per § 93115. 3(o) Engine Not Allowed No Continued from Previous Page Yes Continue to Next Page No Engine Is Allowed No Is it a stock engine that does not meet the latest tier standard? Does it comply with § 93115. 3(s)? Yes No Is the District allowing the engine? Yes Are engines meeting the current Tier standard available? No No Yes Is ARB or the district allowing the Previous Tier standard as per § 93115. 4(v)? Yes Done Must meet standards For new prime power engines (see Table 3) No ? Return to Main Page Yes PM emissions must meet ≤ 0. 01 g/bhp-hr or off-road standard, whichever is more stringent Must meet previous Tier standard Return to Stationary Engines Main Page

STATIONARY IN-USE ENGINES (continued) Yes Continued from Previous Page Does the engine qualify for STATIONARY IN-USE ENGINES (continued) Yes Continued from Previous Page Does the engine qualify for an exemption under § 93115. 3(d)? No ? Is it a remotely located engine? Yes Is it a dual-fueled pilot engine that Uses alternate fuel or alternate diesel fuel? No Has the APCO granted a delay as per Section 93115. 3(p)? No Must meet standards For in-use prime power engines (see Table 4) Engine Allowed Yes Done Return to Main Menu Engine Is not required to meet the emission standards specified in Table 4 until 1/1/2011 Return to Main Page

93115. 6(b) Request for Delay in Implementation for Remotely Located In-Use Prime Engines. Prior 93115. 6(b) Request for Delay in Implementation for Remotely Located In-Use Prime Engines. Prior to January 1, 2011, the district APCO may approve a Request for Delay in Implementation from the provisions of 93115. 7(b)(1) until January 1, 2011, for any in-use stationary diesel-fueled Cl engine, provided the approval is in writing, and the writing specifies all the following conditions to be met by the owner or operator: (1) the engine is a prime engine, and (2) the engine is located more than one mile from any receptor location, and (3) the impacts of the emissions from the engine at any receptor location result in: (A) a prioritization score of less than 1. 0; and (B) a maximum cancer risk of less than 1 in a million; and (C) a maximum Hazard Index Value of less than 0. 1. Return to Previous Page

Test Engines: Upon the prior written approval of the APCO, the requirements of this Test Engines: Upon the prior written approval of the APCO, the requirements of this ATCM do not apply to stationary CI engines used exclusively: 1. as engine test cells and test stands for testing burners, CI engines, or CI engine components, e. g. , turbochargers; 2. for operation or performance testing of fuels, fuel additives, or emission control devices at research and development facilities; or 3. for maintenance, repair, or rebuild training at educational facilities. Single Cylinder Cetane Test Engine: A single cylinder cetane test engine used exclusively to determine the cetane number of diesel fuels in accordance with American Society for Testing and Materials (ASTM) Standard D 613 -03 b, "Standard Test Method for Cetane Number of Diesel Fuel Oil, " as modified on June 10, 2003. Return to Previous Page

93115. 6(b) In-Use Emergency Standby Diesel-Fueled Cl Engine (> 50 bhp) Operating Requirements and 93115. 6(b) In-Use Emergency Standby Diesel-Fueled Cl Engine (> 50 bhp) Operating Requirements and Emission Standards. (1) No owner or operator shall operate any in-use stationary emergency standby diesel-fueled Cl engine in response to the notification of an impending rotating outage unless all the following criteria are met: (A) the engine's permit to operate allows operation of the engine in anticipation of a rotating outage, or the District has established a policy or program that authorizes operation of the engine in anticipation of a rotating outage; and (B) the Utility Distribution Company has ordered rotating outages in the control area where the engine is located, or has indicated it expects to issue such an order at a certain time; and (C) the engine is located in a specific location that is subject to the rotating outage; and (D) the engine is operated no more than 30 minutes prior to the time when the Utility Distribution Company officially forecasts a rotating outage in the control area; and (E) the engine operation is terminated immediately after the Utility Distribution Company advises that a rotating outage is no longer imminent or in effect. (2) At-School and Near-School Provisions. No owner or operator shall operate an in-use stationary emergency standby diesel -fueled Cl engine for non-emergency use, including maintenance and testing, during the following periods: (A) whenever there is a school sponsored activity, if the engine is located on school grounds, and (B) between 7: 30 a. m. and 3: 30 p. m. on days when school is in session, if the engine is located within 500 feet of school grounds. Section 93115. 6(b)(2) does not apply if the engine emits no more than 0. 01 g/bhp-hr of diesel PM. Return to Previous Page

Section 93115. 3(s): The District may exempt any stock engine from the new stationary Section 93115. 3(s): The District may exempt any stock engine from the new stationary diesel-fueled engine emission standards in sections 93115. 6(a), 93115. 7(a), 93115. 8(a), and 93115. 9 provided the seller and the owner or operator demonstrate to the District’s satisfaction that the following conditions are met: 1. Seller: Any stationary diesel-fueled engine greater than 50 bhp shall meet the following standards and conditions: A. B. C. D. The stationary diesel-fueled engine emission standards in sections 93115. 6(b), 93115. 7(b), or 93115. 8(b), or The Off-Road CI Engine Certification Standards (title 13, CCR, section 2423) immediately preceding the transition to new standards for an off-road CI engine of the same model year and maximum rated power, and The engine was delivered to California no more than twelve months immediately preceding the transition to new standards for an off-road CI engine of the same model year and maximum rated power, and The engine was sold no later than six months after the effective date of the new standards for an off-road CI engine of the same model year and maximum rated power, (2) Owner/operator: A. The date of acquisition of the stock engine is no later than six months from the date an emission standard applicable to new engines becomes more stringent than the emission standard to which the stock engine is certified. B. The date the District determines the application is complete for an Authority to Construct permit is no later than six months after the date of acquisition of the stock engine. Return to Previous Page

In-Use Engine: An “In-Use” engine means a compression-ignited (CI) engine that is not a In-Use Engine: An “In-Use” engine means a compression-ignited (CI) engine that is not a “new” CI engine. New Engine: "New" or "New Cl Engine" means the following: (A) a stationary Cl engine installed at a facility after January 1, 2005, including an engine relocated from an off-site location after January 1, 2005, except the following shall be deemed in-use engines: 1. a replacement stationary Cl engine that is installed to temporarily replace an in-use engine while the in-use engine is undergoing maintenance and testing, provided the replacement engine emits no more than the in-use engine, and the replacement engine is not used more than 180 days cumulatively in any 12 -month rolling period; 2. an engine for which a district-approved application for a district permit or engine registration for stationary sources was submitted to the District prior to January 1, 2005, even though the engine was installed after January 1, 2005; 3. an engine that is one of four or more engines owned by an owner or operator and is relocated prior to January 1, 2008, to an offsite location that is owned by the same owner or operator; 4. an engine, or replacement for an engine, used in agricultural operations that is relocated within the same facility or to another facility under the same owner or operator for use in agricultural operations, unless the engine is sited where an engine is not currently located and has not been previously located. 5. an engine installed at a facility prior to January 1, 2005, and relocated within the same facility after January 1, 2005. 6. a model year 2004 or 2005 engine purchased prior to January 1, 2005, for use in California. The date of purchase is defined by the date shown on the front of the cashed check, the date of the financial transaction, or the date on the engine purchasing agreement, whichever is earliest. 7. a greater than 50 bhp Tier 1 - or Tier 2 -certified stationary diesel agricultural engine installed after January 1, 2005, shall be considered a new engine subject to the requirements of section 93115. 8(a) until 12 years after the date of initial installation, at which time, it shall be considered an in-use engine subject to the requirements of section 93115. 8(b)(3). (B) a stationary Cl engine that has been reconstructed after January 1, 2005, shall be deemed a new engine unless the sum of the costs of all individual reconstructions of that engine after January 1, 2005, is less than 50% of the lowest-available purchase price, determined at the time of the most recent reconstruction, of a complete, comparably-equipped new engine (within + 10% of the reconstructed engine's brake horsepower rating). For purposes of this definition, the cost of reconstruction and the cost of a comparable new engine shall not include the cost of equipment and devices required to meet the requirements of this ATCM. Return to Previous Page

AGRICULTURAL ENGINES Not subject to ACTM Start here Is it an agricultural wind machine? AGRICULTURAL ENGINES Not subject to ACTM Start here Is it an agricultural wind machine? Continue to agricultural standby generators Yes Is it a stand-by generator? No Yes Is it an in-use engine? No No Does it meet the emission standards? Yes Has CARB extended the compliance date? ? No Has the District extended the compliance date pursuant to § 93115. 8(b)(6) or § 93115. 8(b)(7)? Done Return to Main Page Yes Must meet the standards by the new specified date or will not be In compliance with ATCM No Yes No Engine not allowed Must meet the standards by the date specified in the ATCM or will not be In compliance with ATCM emission standards Must register all stationary and portable diesel-fired agricultural engines by March 1, 2008 or within 90 days from initial installation date, whichever is later Return to Stationary Engines Main Page

IN-USE EMERGENCY GENERATORS AT AGRICULTURAL OPERATIONS Start here Does it meet the emission standards? IN-USE EMERGENCY GENERATORS AT AGRICULTURAL OPERATIONS Start here Does it meet the emission standards? No Yes In compliance with ATCM emission standards Does it have a non-resettable hour meter capable of Displaying 9, 999 hrs? Must retain records as per § 93115. 10(f) Has CARB extended the Compliance date? Yes Must meet the standards by the new specified date or will not be In compliance with ATCM Has the District extended the compliance date pursuant to § 93115. 8(b)(6) or § 93115. 8(b)(7)? No Done Return to Main Page In compliance with ATCM emission standards No No Must register all stationary and portable diesel-fired agricultural engines by March 1, 2008 or within 90 days from initial installation date, whichever is later Yes ? Yes Must meet the standards by the date specified in the ATCM or will not be In compliance with ATCM Return to Agricultural Engines Main Page

Section 93115. 10(f): Reporting Provisions for Exempted Agricultural Emergency, Prime, and Nonagricultural Emergency Engines. Section 93115. 10(f): Reporting Provisions for Exempted Agricultural Emergency, Prime, and Nonagricultural Emergency Engines. An owner or operator of an agricultural emergency standby generator set engine subject to section 93115. 3(a) or an engine subject to sections 93115. 3(d) or 3115. 3(j) shall keep records of the number of hours the engines are operated on a monthly basis. Such records shall be retained for a minimum of 36 months from the date of entry. Record entries made within 24 months of the most recent entry shall be retained on-site, either at a central location or at the engine's location, and made immediately available to the District staff upon request. Record entries made from 25 to 36 months from the most recent entry shall be made available to District staff within 5 working days from the district's request. Section 93115. 10(g): Reporting Requirements for Emergency Standby Engines. (1) Starting January 1, 2005, each owner or operator of an emergency standby diesel-fueled Cl engine shall keep records and prepare a monthly summary that shall list and document the nature of use for each of the following: (A) emergency use hours of operation; (B) maintenance and testing hours of operation; (C) hours of operation for emission testing to show compliance with sections 93115. 6(a)(3) and 93115. 6(b)(3); (D) initial start-up testing hours; (E) if applicable, hours of operation to comply with the requirements of NFPA 25; (F) hours of operation for all uses other than those specified in sections 93115. 10(g)(1)(A) through (D) above; and (G) the fuel used. 1. For engines operated exclusively on CARB Diesel Fuel, the owner or operator shall document the use of CARB Diesel Fuel through the retention of fuel purchase records indicating that the only fuel purchased for supply to an emergency standby engine was CARB Diesel Fuel; or 2. For engines operated on any fuel other than CARB Diesel Fuel, fuel records demonstrating that the only fuel purchased and added to an emergency standby engine or engines, or to any fuel tank directly attached to an emergency standby engine or engines, meets the requirements of section 93115. 5(b). (2) Records shall be retained for a minimum of 36 months. Records for the prior 24 months shall be retained on-site, either at a central location or at the engine's location, or at an offsite central location within California, and shall be made immediately available to the District staff upon request. Records for the prior 25 to 36 months shall be made available to District staff within 5 working days from request. Return to Previous Page

Section 93115. 8(b)(6): On a site-specific basis, a District may extend compliance dates in Section 93115. 8(b)(6): On a site-specific basis, a District may extend compliance dates in sections 93115. 8(b)(1), (2), and (4) up to four years provided: (A) A District determines that an engine meeting section 93115. 8(b)(2) would exceed a District's threshold for significant risk pursuant to H&SC section 44391 (AB 2588 "Hot Spots" Program), and (B) No later than four years after the applicable initial compliance date for section 93115. 8(b)(2), one of the following is installed: 1. an electric motor; 2. an engine greater than 50 bhp but less than 75 bhp that does not exceed 0. 02 g/bhp-hr PM; or 3. an engine greater than 75 bhp that does not exceed 0. 01 g/bhp-hr diesel PM. Section 93115. 8(b)(7): A District may: (A) Allow an owner or operator up to two additional years to comply with sections 93115. 8(b)(1) through (4), provided at least 60 days prior to the applicable compliance date or dates, the owner or operator submits to the District Air Pollution Control Officer documentation demonstrating that an affected engine or engines shall be replaced with an electric motor or electric motors within two years. Documentation for each engine replaced shall include identification of the engine, the purchasing agreement for the electric motor, and a copy of an agreement with a utility distribution company to provide electricity if electricity is not already available for electric motor operation. (B) Establish more stringent diesel PM, NMHC+NOx, HC, NOx, and CO emission limits, emission limit compliance dates, or other requirements. Return to Previous Page

? EMISSION STANDARDS FOR IN-USE AGRICULTURAL ENGINES (ENGINES INSTALLED BEFORE JANUARY 1, 2005) ENGINE ? EMISSION STANDARDS FOR IN-USE AGRICULTURAL ENGINES (ENGINES INSTALLED BEFORE JANUARY 1, 2005) ENGINE POWER (hp) MANUFACTURE YEAR Applicable Emission Standards ENGINE APPLICATION PM (g/hp-hr) Compliance Date Pre 1998 Tier 0 Non exempt electrical generators 0. 02 12/31/2015 Pre 1998 Tier 0 All other applications (not generators) 0. 30 12/31/2011 Tier 1 -2 All applications 0. 02 12/31/2015 or 12 years after installation Pre 1998 Tier 0 Non exempt electrical generators 0. 01 12/31/2015 Pre 1998 Tier 0 All other applications (not generators) 0. 30 12/31/2011 Tier 1 -2 All applications 0. 01 12/31/2015 or 12 years after installation Pre 1997 Tier 0 Non exempt electrical generators 0. 01 12/31/2015 Pre 1997 Tier 0 All other applications (not generators) 0. 22 12/31/2010 Tier 1 -2 All applications 0. 01 12/31/2015 or 12 years after installation Tier 0 All applications 0. 15 12/31/2010 Tier 1 -2 All applications 0. 01 12/31/2014 or 12 years after installation Pre 2000 50 ≥ hp < 75 TIER Tier 0 All applications 0. 075 12/31/2014 2000 - 2004 Tier 1 All applications 0. 075 12/31/2014 or 12 years after installation 1998 - 2004 75 ≥ hp < 100 1998 - 2004 100 ≥ hp < 175 1998 - 2004 Pre 1996 175 ≥ hp ≤ 750 > 750 hp 1996 - 2004 Return to Previous Page

EMISSION STANDARDS FOR NEW ENGINES (ENGINES INSTALLED AFTER DECEMBER 31, 2004) APPLICABLE STANDARDS ENGINE EMISSION STANDARDS FOR NEW ENGINES (ENGINES INSTALLED AFTER DECEMBER 31, 2004) APPLICABLE STANDARDS ENGINE POWER (hp) INSTALLATION YEAR 2005 - 2007 50 ≥ hp < 75 2008 - 2012 2013 and after 2005 - 2007 75 ≥ hp < 100 2008 - 2011 2012 and after 2005 - 2006 100 ≥ hp < 175 2007 - 2011 2012 and after 2005 175 ≥ hp < 300 2006 - 2010 2011 and after 2005 300 ≥ hp < 600 2006 - 2010 2011 and after 2005 600 ≥ hp < 750 2006 - 2010 2011 and after 2005 750 ≥ hp < 1200 2006 - 2010 2011 and after 2005 hp ≥ 1200 2006 - 2014 2015 and after MANUFACTURE YEAR Pre 2004 APPLICABLE 12 YEARS AFTER INSTALLATION Emission Standards (in grams/hp-hr) TIER CO Tier 0 -1 HC NMHC+NOx PM ? PM *** Not allowed unless it qualifies as an “In-Use” engine *** 2004 - 2007 Tier 2 3. 7 N/A 5. 6 N/A 0. 3 0. 02 2008 - 2012 Tier 3 3. 7 N/A 3. 5 N/A 0. 3 No change 2013 and after Tier 4 3. 7 N/A 3. 5 N/A 0. 022 No Change Pre 2004 Tier 0 -1 *** Not allowed unless it qualifies as an “In-Use” engine *** 2004 - 2007 Tier 2 3. 7 N/A 5. 6 N/A 0. 3 0. 01 2008 - 2011 Tier 3 3. 7 N/A 3. 5 N/A 0. 3 No Change Tier 4 3. 7 0. 14 N/A 0. 30 0. 015 No Change 2012 and after Pre 2003 Tier 0 -1 *** Not allowed unless it qualifies as an “In-Use” engine *** 2003 - 2006 Tier 2 3. 7 N/A 4. 9 N/A 0. 22 0. 01 2007 - 2011 Tier 3 3. 7 N/A 3. 0 N/A 0. 22 No Change 2012 and after Tier 4 3. 7 0. 14 N/A 0. 30 0. 015 No Change Pre 2003 Tier 0 -1 *** Not allowed unless it qualifies as an “In-Use” engine *** 2003 - 2005 Tier 2 2. 6 N/A 4. 9 N/A 0. 15 0. 01 2006 - 2010 Tier 3 2. 6 N/A 3. 0 N/A 0. 15 No Change Tier 4 2. 6 0. 14 N/A 0. 30 0. 015 No Change 2011 and after Pre 2001 Tier 0 -1 *** Not allowed unless it qualifies as an “In-Use” engine *** 2001 - 2005 Tier 2 2. 6 N/A 4. 8 N/A 0. 15 0. 01 2006 - 2010 Tier 3 2. 6 N/A 3. 0 N/A 0. 15 No Change Tier 4 2. 6 0. 14 N/A 0. 30 0. 015 No Change 2011 and after Pre 2002 Tier 0 -1 *** Not allowed unless it qualifies as an “In-Use” engine *** 2002 - 2005 Tier 2 2. 6 N/A 4. 8 N/A 0. 15 0. 01 2006 - 2010 Tier 3 2. 6 N/A 3. 0 N/A 0. 15 No Change 2011 and after Tier 4 2. 6 0. 14 N/A 0. 30 0. 015 No Change Pre 2000 Tier 0 2000 - 2005 Tier 1 8. 5 N/A 6. 9 0. 4 2006 - 2010 Tier 2 2. 6 N/A 4. 8 N/A 0. 15 0. 075 2011 and after Tier 4 2. 6 0. 3 N/A 2. 6 0. 07 No Change Pre 2000 Tier 0 2000 - 2005 Tier 1 8. 5 N/A 6. 9 0. 4 2006 - 2014 Tier 2 2. 6 N/A 4. 8 N/A 0. 15 0. 075 2015 and after Tier 4 2. 6 0. 14 N/A 2. 6 0. 03 No Change *** Not allowed unless it qualifies as an “In-Use” engine *** 0. 075 Return to Previous Page

? EMISSION STANDARDS FOR IN-USE AGRICULTURAL EMERGENCY STAND-BY GENERATORS (ENGINES INSTALLED BEFORE JANUARY 1, ? EMISSION STANDARDS FOR IN-USE AGRICULTURAL EMERGENCY STAND-BY GENERATORS (ENGINES INSTALLED BEFORE JANUARY 1, 2005) ENGINE POWER (hp) MANUFACTURE YEAR Applicable Emission Standards TIER PM (g/hp-hr) Tier 0 0. 02 12/31/2015 Tier 1 -2 0. 02 12/31/2015 or 12 years after installation Tier 0 0. 01 12/31/2015 Tier 1 -2 0. 01 Tier 0 0. 01 Tier 1 -2 0. 01 Tier 0 0. 15 Tier 1 -2 0. 01 12/31/2014 or 12 years after installation Pre 2000 Tier 0 0. 075 12/31/2014 2000 - 2004 Tier 1 0. 075 12/31/2014 or 12 years after installation Pre 1998 50 ≥ hp < 75 1998 - 2004 Pre 1998 75 ≥ hp < 100 1998 - 2004 Pre 1997 100 ≥ hp < 175 1998 - 2004 Pre 1996 175 ≥ hp ≤ 750 > 750 hp 1996 - 2004 HC, NOx, NMHC+NOx, & CO (g/hp-hr) Must meet the more stringent of: 1)Tier 1 certification standards; or 2)the certification standards for an off-road engine of the model year and maximum rated power of the engine installed to meet the applicable PM standard Compliance Date 12/31/2015 or 12 years after installation 12/31/2010 Return to Previous Page