1. Will CARB accept European E0 or E1 boards as meeting the Phase 2 standard? No. While CARB's Phase 2 standards are comparable to some E0 and E1 emission levels, differences in the test methods and the amount of in-plant quality assurance testing done in Europe varies considerably from CARB's requirements. Even if boards meet the E1 standard, the mills producing those boards would need to be certified by an independent, CARB-approved third-party certifier and have test data to show that it also meets the CARB Phase 2 standard using the primary or secondary test method, if they are offered for sale in California as panels or in finished goods. During the implementation of the Phase 2 standards, composite wood products are required to have emission levels well below E1 to be acceptable for sale in California.