40 CFR 89.113 - Smoke emission standard.
(a) Exhaust opacity from compression-ignition nonroad engines for which this subpart is applicable must not exceed:
(b) Opacity levels are to be measured and calculated as set forth in 40 CFR part 86, subpart I. Notwithstanding the provisions of 40 CFR part 86, subpart I, two-cylinder nonroad engines may be tested using an exhaust muffler that is representative of exhaust mufflers used with the engines in use.
[59 FR 31335, June 17, 1994. Redesignated and amended at 63 FR 56995, 57003, Oct. 23, 1998]
Title 40 published on 2013-07-01
no entries appear in the Federal Register after this date.