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arbcombo -- DRAFT PROPOSED TEST PROCEDURE MODIFICATIONS FOR NEW TIER 4 OFF-ROAD COMPRESSION-IGNITION ENGINES Posted: 26 Aug 2011 15:51:02
The California Air Resources Board is proposing updates to the existing test procedures for new off-road diesel engines, primarily to align with similar federal requirements, and requests comments from affected stakeholders prior to releasing the official 45 day notice for the December 2011 Board hearing. The Air Resources Board (ARB) has released a draft of the proposed amendments to the California tier 4 off-road compression-ignition (CI) engine test procedures. The basis of these test procedures are the U.S. Environmental Protection Agency’s (U.S. EPA’s) nonroad CI engine regulations contained in title 40 Code of Federal Regulations (40 CFR) Parts 1039, 1065, and 1068, and which ARB adopted originally on October 20, 2005. The released ARB draft proposal reflects both the amendments that U.S. EPA has made to Parts 1039, 1065, and 1068 since 2005, as well as ARB’s proposed amendments for aligning with those federal amendments. Except for draft amendments of Table 1b (Tier 4 Exhaust Emission Standards) and Table 2b (Upper Limit for Tier 4 Family Emission Limits (FELs) and Alternative Allowances), from title 13, California Code of Regulations (13 CCR) §2423, a draft of the other amendments that will be proposed to the California tier 4 off-road CI engine regulations in 13 CCR §2420 is not included with this release. However, such amendments are forthcoming and will reflect the amendments being proposed in the draft test procedures proposal. The draft test procedure amendment proposal can be found on the following webpage, http://www.arb.ca.gov/msprog/mailouts/mouts_11.htm. Specifically, ARB is planning on proposing modifications to the California tier 4 off-road CI engine regulations in order to increase the level of harmonization with the current U.S. EPA regulations. The proposal will retire the current test procedures (i.e., Part I-C, adopted October 20, 2005) with the 2010 model year, and create new Parts I-D, I-E, and I-F. The proposed Part I D amends the Part 1039-portion of Part I-C by adopting portions of U.S. EPA’s Part 1039, of 40 CFR, as last modified in Vol. 75 of the Federal Register, Pg. 37977 (76 FR 37933), on June 28, 2011. The proposed Part I-E adopts U.S. EPA’s 40 CFR Part 1065, as last modified in 76 FR 37977, on June 28, 2011, as a replacement for the Part 1065-portion of Part I-C; and, the proposed Part I-F amends the Part 1068-portion of Part I-C by adopting portions of U.S. EPA’s 40 CFR Part 1068, as last modified in 76 FR 37977, on June 28, 2011. Although not included in the draft proposal (except for the above mentioned Tables 1b and 2b), staff is also planning on amending the applicable sections of 13 CCR to reflect the draft test procedures amendments described herein. In order to satisfy the required deadlines that are involved in this rulemaking process, comments related to the draft proposed amendments should be received by the close of business on Friday, September 9, 2011. Please submit any comments to Mr. Jeff Lowry, Staff Air Pollution Specialist, firstname.lastname@example.org or (626) 575-6841; or Mr. Ronald Haste, Manager, Off Road Control Section, at email@example.com or (626) 575 6676. Background In 2001, the U.S. EPA adopted 40 CFR, Part 1065, as a “united” test procedure for both “nonroad” engines and equipment and on-highway heavy-duty CI engines. The test procedures in Part 1065 essentially replaced those previously used in Part 89 for nonroad CI engines. Since its initial adoption, Part 1065 has been amended repeatedly to both improve and expand its applicability for other nonroad engine categories. Federal nonroad CI engines certified for tier 4 standards must be tested using Part 1065. Use of Part 1065 was optional for tier 3 and earlier model engines. In addition, U.S. EPA adopted Part 1039, which is the “standard-setting” part for nonroad CI engines. Besides the actual emission standards, Part 1039 contains other provisions, such as certification protocols, credit-generation allowances, etc. Also adopted was Part 1068, which contains the general compliance provisions. California adopted Part 1065 originally in 2005 in conjunction with its adoption of the tier 4 off-road CI engine emission standards. Since 2005, U.S. EPA has adopted several amendments to its nonroad CI engine regulations (i.e., to Parts 1039, 1065, and 1068). In May 2009, off-road CI engine manufacturers formally asked ARB to maintain full alignment and harmonization with the federal regulations in order to avoid performing separate testing and certification processes and thereby reduce their burden of compliance. Since that time, ARB has worked cooperatively with these manufacturers in developing harmonizing amendments to its off-road tier 4 CI engine regulations and test procedures without changing the stringency of California’s current emission standards. You are receiving this single arbcombo email because you are a subscriber to one or more of the following lists: ms-mailings; ag; arber; diesel-retrofit; ordiesel; cert; tru; portable; misc. You are receiving this single arbcombo email because you are a subscriber to or have made a public comment to one or more of the following lists: ag, arber, cert, diesel-retrofit, ms-mailings, ordiesel, portable, tru.