part_subject: "CONTROL OF EMISSIONS FROM NONROAD SPARK-IGNITION ENGINES AT OR BELOW 19 KILOWATTS"
subpart_code: "C"
subpart_subject: "Certification Averaging, Banking, and Trading Provisions"
section_number: "90.206"
section_subject: "Trading."
cfr_reference: "40 CFR 90.206"
title_name: "Title 40"
title_subject: "Protection of Environment"
parts_covered: "Parts 87 to 95"
revised_date: "Revised as of July 1, 2017"
publication_date: "As of July 1, 2017"
contains_description: "Containing a codification of documents of general applicability and future effect"
publication_info: "Published by the Office of the Federal Register National Archives and Records Administration as a Special Edition of the Federal Register"
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(a)An engine manufacturer may exchange emission credits with other engine manufacturers in trading, subject to the trading restriction specified in § 90.207(c)(2).
(b)Credits for trading can be obtained from credits banked in previous model years or credits generated during the model year of the trading transaction.
(c)Traded credits can be used for averaging, banking, or further trading transactions, subject to § 90.205(a).
(d)Traded credits are subject to the limitations on use for past model years, as set forth in § 90.204(c).
(e)In the event of a negative credit balance resulting from a transaction, both the buyer and the seller are liable, except in cases involving fraud. Certificates of all engine families participating in a negative trade may be voided ab initio pursuant to § 90.123.