Verification Procedure - Fact Sheet / FAQs

This page last reviewed October 29, 2007.

Frequently Asked Questions

What do I need to do first?

For general information on the verification process, first carefully read through the Procedure. This may be found on our website.

How do I apply for information on how to submit an application for verification of a control technology?

Please see Section 2702 of the regulation. This outlines the information necessary to submit an application.

Does EPA verification mean that I'm verified for ARB, or vice versa?

Applicants who receive verification from U.S. EPA do not automatically receive verification from ARB, as there are differences in requirements. However, applicants who intend to receive verification from both ARB and U.S. EPA must co-ordinate with both agencies in the verification process.

What's the difference between ARB Verification and Certification?

ARB has several programs relating to sale, use, or modification of emission control systems. The programs are specific to the type of device as well as the market for which it was designed. The information below outlines the various programs.

What is Certification?

Certification requires that new motor vehicles and engines must be certified by the ARB for emission compliance before they are legal for sale, use, or registration in California. Certification is granted annually to individual engine families and is good for one model year. An engine family is a grouping of vehicles or engine models that exhibit similar emission characteristics (e.g., common engine parameters, fuel system, and emission control systems). Within an engine family, there may be one or more evaporative families that are associated with distinct vehicle models. For information more information on the ARB's Certification process, please click here. [link to AM Parts].

What is Verification?

The Verification Procedure provides a way to thoroughly evaluate the emission reduction capabilities and durability of a variety of diesel emission control strategies as part of a retrofit program. It ensures that emission reductions achieved by a control strategy are both real and durable and that production units in the field are achieving emission reductions which are consistent with their verification. Specific information on the Verification process.

What is the After-Market Parts Program?

To improve air quality, the California Air Resources Board (ARB) requires vehicle manufacturers to develop engine and emission equipment systems that reduce the specific pollutants that cause California's severe air quality problem. These emission control systems are also required to be proven durable and reliable. To ensure that these systems operate as designed, California Vehicle Code Section 27156 and the Federal Clean Air Act prohibit modifications that increase motor vehicle emissions. Since if properly designed, most performance modifications do not increase vehicle emissions, these same laws also allow the installation of parts or modifications proven by their manufacturers and the ARB not to increase vehicle emissions. For information on Aftermarket Parts related programs please [click here].

Do I need to measure NO 2 even though it will not be regulated until January 1, 2007?

Yes. Emissions of NO 2 must be determined for all verification testing even though the emission limit has been delayed until January 1, 2007.

How much does it cost to get verification of a product?

ARB does not charge a fee for verification. However, all testing is done at the applicants expense, which can be quite costly. For specific cost information, please check with the test lab directly.

Should I talk to ARB before doing testing?

Yes, it is advisable to obtain approval for a testing protocol before proceeding with testing to ensure that the testing will support the verification of the proposed diesel emission control group. This is critical if you are seeking both ARB and EPA verification.

How long will it take to get verification of my device?

It depends on the type of device and how complete the initial information is when submitting the application. Normally, we will review your application and contact you within 30 days if it meets our requirements and/or we need additional information.Could previously generated data be used to support verification? Yes, previously generated data (e.g. VERT data or U.S. EPA verification data) may be used to support ARB verification. When submitting such data, please be sure to indicate the relevant sections (page numbers) in your application.

In what format should I submit the test data?

For engine dynamometer-based testing, all pollutants (PM, CO, CO 2, HC, NOx, NO, and NO 2) should be reported in units of g/bhp-hr or g/kW-hr. For chassis testing, use g/mi (PH).

From which laboratories will you accept test data?

We accept data from laboratories with test equipment that meets the specifications and calibrations given in the Code of Federal Regulations, Title 40, Part 86, subpart N.

Further questions regarding the verification program?

Please contact Ms. Susan Reed, at (626) 575-6847.