Verification Procedure - Formerly Verified - Level 3

This page last reviewed January 9, 2013

PLEASE NOTE: The following systems are no longer verified and do not meet the requirements for any on-road or off-road rule compliance options.   They cannot be sold after the date shown below, however, all warranty obligations will be fulfilled until  the warranty expiration date is met.

Verifications were issued chronologically. The most recent Executive Order would have been in effect at the time of de-verification. For details on prior verification for each system, please view the specific Executive Orders and attachments by date.

CLEAIRE Lonestar
As of January 9, 2013

The Air Resources Board has conditionally verified the Cleaire Lonestar diesel retrofit system for certain 1996 through 2009 model year diesel engines in rubber-tired off-road vehicles.  The Lonestar reduces emissions of diesel particulate matter by at least 85 percent and is designated as a Level 3 plus system.  The Lonestar also reduces emissions of oxides of nitrogen (NOx) by 40 percent.  The primary components of the Lonestar include a catalyzed silicon carbide wall-flow filter and a lean NOx catalyst.  The Lonestar system is compatible with off-road vehicles using diesel fuel that contains up to 20 percent biodiesel.  Specific conditions for which the Lonestar system has been approved may be found in the conditional verification letter below.

CLEAIRE Allmetal
As of January 9, 2013

The Air Resources Board has conditionally verified the Cleaire Allmetal diesel retrofit system for certain 1996 through 2010 model year diesel engines in both tracked and rubber-tired off-road vehicles.  The Allmetal system reduces emissions of diesel particulate matter by at least 85 percent and is designated as a Level 3 plus system.  The primary components of the passively regenerated Allmetal system include a diesel oxidation catalyst, a metal diesel particulate filter, and a driver notification and data logging system.  The Allmetal system is compatible with off-road vehicles using diesel fuel that contains up to 20 percent biodiesel.  Specific conditions for which the Allmetal system has been approved may be found in the conditional verification letter below

CATERPILLAR
As of January 9, 2013

The Air Resources Board verified the Caterpillar Diesel Particulate Filter as a Level 3 Plus passively regenerated diesel emission control system for use with all off-road equipment powered by certain off-road diesel engines with model years between 1996 and 2005. Approved engines are certified to a particulate matter emission level equal to or less than 0.2 grams per brake horsepower-hour, are rated to 175 horsepower through 600 horsepower, and are not equipped with exhaust gas recirculation systems. Specific conditions for which the Caterpillar DPF has been approved may be found in the Executive Order below.

DONALDSON NR-LNF
As of January 9, 2013

The Air Resources Board has granted a conditional verification for the Donaldson NR-LNF system.  The conditional verification includes select off-road diesel equipment powered by off-road diesel engines manufactured from 1996 through 2010, rated between 100 horsepower (hp) and 600 hp, inclusive, and certified by ARB to a particulate matter (PM) emission level of 0.20 grams per brake horsepower-hour (g/bhp-hr) or less and to an oxides of nitrogen emission level of at least 3.0 g/bhp-hr, except those engines equipped with exhaust gas recirculation (EGR).  The Donaldson NR-LNF system provides real emission reductions of PM consistent with the Level 3 plus verification category.  Specific engine families and conditions for which the NR-LNF system has been approved may be found in the Executive Order and attachment below.

CLEAIRE LONGMILE
As of December 7, 2012

The Air Resources Board has verified the Cleaire LongMile diesel retrofit system for certain 1993 through 2006 model year on-road heavy-duty diesel engines used in on-road heavy-duty vehicles.  The LongMile reduces emissions of diesel particulate matter by at least 85 percent and complies with both the 2009 limit on emissions of nitrogen dioxide and the unidirectional design requirements.  As such, it is designated as a Level 3 Plus system.  The primary components of the LongMile include a diesel oxidation catalyst, a non-catalyzed sintered metal diesel particulate filter, an electronic control system, and a backpressure monitor. The LongMile system is compatible with on-road vehicles using diesel fuel that contains up to 20 percent biodiesel.  Specific conditions for which the LongMile system has been approved may be found in the Executive Order below.

Proventia EHDPF
As of March 21, 2012
The Air Resources Board conditionally verified Proventia’s EHDPF system as a Level 3 plus active regenerated diesel emission control system for use with the Thermo King Tripac APU, powered by select model year 2007 to 2009 Yanmar TK270M diesel engines with a diesel particulate matter certification of 0.2 grams per kilowatt hour or less.  Proventia’s EHDPF system uses a sintered metal filter which is electrically heated for regeneration to achieve an 85 percent reduction in emissions of diesel particulate matter and is compliant with ARB’s 2009 nitrogen dioxide standard.  Specific conditions for which Proventia’s EHDPF system had been approved are found in the conditional verification letter below.

Teleflex CLEAR SKY
As of March 20, 2012

The Air Resources Board conditionally verified Teleflex’s Clear Sky DPF as a Level 3 plus active regenerated diesel emission control system for use with the Comfort Pro APU, powered by select Kubota Z482 diesel engines with model years between 2005 and 2009. Teleflex’s Clear Sky DPF uses a silicon carbide wall-flow filter with a heating element for regeneration to achieve an 85 percent reduction in emissions of diesel particulate matter and is compliant with ARB’s 2009 nitrogen dioxide standard. Specific conditions for which Teleflex’s Clear Sky DPF have been approved are found in the conditional verification letter below.

Engine Control Systems
As of March 5, 2012

The ARB has conditionally verified the Engine Control Systems Purifilter for equipment powered by certain off-road diesel engines with model years between 1996 and 2008.  Approved engines are certified to a particulate matter emission level equal to or less than 0.2 grams per brake horsepower-hour, are rated to at least 50 horsepower and at most 750 horsepower, and are not equipped with exhaust gas recirculation systems.

As of January 26, 2010

Using the Verification Procedure, Warranty and In-Use Compliance Requirements for In-Use Strategies to Control Emissions from Diesel Engines, the Air Resources Board (ARB) conditionally verified the Cleaire Advanced Emission Controls (Cleaire) Horizon Electric Particulate Filter (Horizon) for use with off-road diesel engines on January 26, 2007.  As stated in the conditional verification letter RAS-07-02, the Horizon system was conditionally verified for a period not to exceed three years from the date of the letter. 

Because this period of time has elapsed, and Cleaire has not yet satisfied all remaining requirements for obtaining full verification, ARB now therefore suspends the verification of the Horizon system for off-road applications.  As of January 27, 2010, the Horizon system may not be sold, installed, or offered for sale as a verified system for any off-road applications until such time as ARB determines that Cleaire has satisfactorily completed all remaining requirements for full verification. 

The following systems do not comply with the new 2009 NO2 emissions limit, and are no longer verified.

The ARB verified the Cleaire Longview system for specific 1993 through 2006 model year diesel engines used with on-road applications operating on CARB diesel fuel and biodiesel. The system employs a diesel particulate filter to achieve at least 85 percent reduction of PM and a lean NOx catalyst to achieve a 25 percent reduction of NOx. Other conditions of verification that apply to these model years may be found in the verification letters. The most current Executive Orders are provided here. These supercede the previous verification letters and include a list of all the engine families for which the device has been approved.

Donaldson DPM diesel particulate filter (DPF) muffler system with Series 6300 catalyst formulation for specific 1993 through 2006 model year diesel engines used with on-road applications operating on ultra low sulfur diesel fuel. All of these engines are four-stroke, medium and heavy heavy-duty diesel engines, including turbo-charged, mechanically or electronicallyinjected, and are not equipped with exhaust gas recirculation. The system employs a DPF to achieve at least an 85 percent reduction of diesel particulate matter. The Executive Orders below include restrictions for these verifications. The attachment includes a list of engine families for which the device has been approved.

In 2007, the ARB conditionally verified the EGR Technologies LLC/CleanAir Systems diesel emissions control system, the Exhaust Gas Recirculation/PERMIT™ diesel particulate filter (EGR/PERMIT™ DPF).  We were notified on November 21, 2008, that EGR Technologies LLC will no longer be producing the exhaust gas recirculation unit for the EGR/PERMIT™ DPF.  Therefore, the EGR/PERMIT™ DPF (CA/EGR/2007/PM3/N50/ST/ERF01) will no longer be available and will not be considered verified as of January 1, 2009.  We have been informed by EGR Technologies LLC that, to date, no EGR/PERMIT™ DPFs have been sold in California.  Regardless, please note that any EGR/PERMIT™ DPFs sold before January 1, 2009, will remain verified and the manufacturer is required to continue to abide by the requirements of a conditional verification, including but not limited to the warranty and in-use requirements of the verification procedure.  For further details on this emission control strategy, please see below.

The ARB has verified the International Truck & Engine Corporation DPX Catalyzed Soot Filter System for 1994  2003 model year, Navistar (International) diesel engines used in on-road applications operating on ultra low sulfur diesel (ULSD) fuel or B20 fuel.  B20 is defined, based on volume, as a mixture of 20 percent neat biodiesel (B100) that complies with ASTM D6751 and 80 percent diesel (e.g. not alternative diesel fuels) with a sulfur content of no more than 15 parts per million by weight.  The DPX Catalyzed Soot Filter System uses a catalyzed diesel particulate filter to achieve a 85 percent reduction in particulate matter emissions qualifying it for an Level 3 verification. Specific engine families and conditions for which the DPX Catalyzed Soot Filter System have been approved may be found in the Executive Order and Attachment posted below.

The Air Resources Board has verified the Johnson Matthey reformulated CRT™ Particulate Filter system for specific 1994 through 2006 model year diesel engines used in on-road applications. All of these engines are four-stroke, turbocharged, and were certified in California to the 0.1 gram per brake horsepower-hour (g/bhp-hr) particulate matter (PM) emission standard when new. The reformulated CRT™ Particulate Filter system employs a catalyst and a wall-flow diesel particulate filter with a back pressure monitor to achieve an 85 percent reduction in particulate matter emissions, qualifying it for Level 3 verification. Specific engine families and conditions for which the reformulated CRT ™ Particulate Filter system has been approved may be found in the Executive Order and attachment below.

The ARB has verified the Johnson Matthey Continuously Regenerating Technology (CRT ®) diesel particulate filter (DPF) reduces emissions of diesel particulate matter (PM) by 85 percent or greater for use on stationary emergency and prime generators. Additionally, ARB hereby conditionally verifies that the CRT ® filter reduces emissions of diesel particulate matter (PM) by 85 percent or greater for use in stationary prime and emergency pumps. The CRT ® filter is therefore verified as a Level 3 diesel emission control device for generators and conditionally verified as a Level 3 diesel emission control device for pumps when used on diesel engines certified to Tier 1, Tier 2, or Tier 3 with a PM emission rate of 0.4 g/bhp-hr or less, subject to the terms and conditions specified in the Executive Order with engines listed in Attachment  below. 

The following systems do not comply with the new 2007 NO2 emissions limit, and are no longer verified.

The ARB verified the Cleaire Flash and Catch™ system for use with specific 1994 through 1998 model year diesel engines. This verification applies only to Cummins M11 engines, for steady state application (long haul truck), operating on low-sulfur fuel in on-road applications. Other restrictions which apply to these verifications may be found in the verification letters. (tables provided by Cummins, Inc.)

• February 20, 2002 - Cleaire Flash and Catch™ with Engelhard DPX | Verification Letter (included engine family list)
• March 9, 2002 - Cleaire Flash and Catch™ with Johnson Matthey CRT | Verification Letter (includes engine family list)

The ARB reinstated the verification of the Clean Air Power, Incorporated, Catalytic Particulate Filter (CPF), for select model years 1994 to 2002, Power System Associates and Caterpillar natural gas/diesel bi-fuel compression ignition engines used in on-road applications and operated on ultra low sulfur diesel fuel. The CPF system is comprised of a catalyst-coated, cellular ceramic monolith particulate filter and a backpressure monitoring system. The CPF has been verified as capable of achieving a Level 3 particulate matter (PM) emission reduction (equal to or greater than 85 percent PM reduction). Specific engine families and conditions for which the CPF has been approved may be found in the Executive Order and Attachment below.

• July 31, 2006 - Executive Order DE-06-002 | Attachment

The ARB originally verified the Clean Air Power, Inc. (Clean Air Partners) diesel particulate filter (DPF), manufactured by Engelhard on August 15, 2002.  This verification was in effect from August 15, 2002 through July 30, 2005. Clean Air Partners did not meet the warranty requirements as outlined in the verification procedure and was therefore no longer considered verified as of July 30, 2005. Please note that this does not impact the warranty of the DPF system itself, but is due to a warranty reporting requirement.  Any systems sold before July 30, 2005, will remain verified provided that the manufacturer continues to abide by the requirements under which the system was verified.

• August 15, 2002 - Verification Letter (includes engine family list)

The Air Resources Board has verified the Donaldson DPM Low Temperature Filter (LTF), with and without the Spiracle Closed Crankcase Filtration System, for use with most 1994 through 2006 model year on-road diesel engines used in on-road applications. The DPM LTF uses a flow-through filter followed by a diesel particulate filter to achieve an 85 percent reduction in particulate matter emissions. The Spiracle system filters engine crankcase emissions and directs the crankcase gases back to the engine intake. Specific conditions for which the DPM LTF with and without the Spiracle system has been approved may be found in the Executive Orders below.

• September 12, 2006  - Executive Order DE-06-004 | Attachment
• September 12, 2006  - Executive Order DE-06-005 | Attachment

The ARB has modified the conditions of the verification of the Johnson Matthey CRT ™ Particulate Filter system to allow for a lower temperature requirement. The Johnson Matthey CRT ™ is now verified for most 1991-2006 model year diesel engines in on-road applications operating on ultra low sulfur diesel fuel or B20 fuel. B20 is defined, based on volume, as a mixture of 20 percent neat biodiesel (B100) that complies with ASTM D6751 and 80 percent diesel (e.g. not alternative diesel fuels) with a sulfur content of no more than 15 parts per million by weight. All of these engines are four-stroke, turbocharged, and were certified in California to the 0.1 gram per brake horsepower-hour (g/bhp-hr) particulate matter (PM) emission standard when new. The CRT ™ is also verified for a select few engines that employ exhaust gas recirculation through model year 2006. The CRT ™ Particulate Filter system employs a passively regenerated catalyzed diesel particulate filter to achieve an 85 percent reduction in particulate matter emissions, qualifying it for a Level 3 verification. Specific engine families and conditions for which the CRT™ Particulate Filter system has been approved and may be found in the Executive Order and attachment which are posted below.

• August 15, 2006 - Executive Order DE-04-006-07 | Attachment
• February 9. 2006 - Executive Order DE-04-006-06 | Attachment
• August 15, 2005 - Executive Order DE-04-006-05 | Attachment
• July 29, 2005 - Executive Order DE-04-006-04 | Attachment
• June 6, 2006 - Executive Order DE-04-006-03 | Attachment
• March 21, 2005 - Executive Order DE-04-006-02 | Attachment
• January 27, 2005 - Executive Order DE-04-006-01 Attachment
• May 21, 2004 - Executive Order DE-04-006 | Attachment
• July 23, 2002 - Verification Letter | Attachment
• October 10, 2001 - Verification Letter | Attachment
• August 2, 2001 - Verification Letter (includes engine family list)

The ARB has verified the Johnson Matthey CCRT ™ Particulate Filter system for specific 1994 to 2006 model year on-road diesel engines, which are used in on-road applications operating on ultra low sulfur diesel fuel. All of these engines are four-stroke, turbocharged, and were certified in California to the 0.1 gram per brake horsepower-hour (g/bhp-hr) particulate matter (PM) emission standard when new. A select few of these engines also employ the use of exhaust gas recirculation. The CCRT ™ Particulate Filter system achieves an 85 percent or greater (Level 3) reduction in particulate matter emissions. The CCRT ™ Particulate Filter can achieve this reduction at a temperature of 200ºC for at least 40 percent of the duty cycle. Specific conditions for which the CCRT ™ Particulate Filter system has been approved may be found in the Executive Order and attachment which are posted below.

• February 9, 2006 - Executive Order DE-05-003-04 | Attachment
• July 29, 2005 - Executive Order DE-05-003-03 | Attachment
• June 6, 2005 - Executive Order DE-05-003-02 || Attachment
• March 21, 2005 - Executive Order DE-05-003-01| Attachment
• February 7, 2005 - Executive Order DE-05-003 | Attachment

In 2002, the ARB verified the Engelhard DPX ™ using an interim verification procedure. Since that time, a revised verification procedure has been approved and became effective June 2003. Engelhard Corporation has not met the warranty requirements in the revised verification procedure. Therefore, the DPX ™ filter (CA/ENG/2001/PM3/N00/ON/DPF01) is no longer considered verified as of January 1, 2004. Please note that DPX ™ systems sold before January 1, 2004, will remain verified provided that the manufacturer continues to abide by the interim requirements under which the system was verified. For further details on these diesel emission control strategies, please see below.

• January 23, 2004 - Engelhard Letter
• October 3, 2001 | Attachment
• July 23, 2002 | Attachment