ED/CREB-198 Form 6-Application for an Optional Temporary PERP Registration (For Final Tier 4 Diesel Fueled Engines and Current Tier Spark Ignition Engines Only) Categories Programs Portable Equipment Registration Program (PERP) Type Form Contact Portable Equipment Registration Program (PERP) Email portable@arb.ca.gov Phone see list of contacts Last Updated 03/2020 Documents ED/CREB-198 Form 6-Application for an Optional Temporary PERP Registration (For Final Tier 4 Diesel Fueled Engines and Current Tier Spark Ignition Engines Only) ED_CREB_198_FORM_6_APPLICATION_FOR_AN_OPTIONAL_TEMPORARY_PERP_REGISTRATION_0.PDF · 133 KB