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173-422-060  <<  173-422-065 >>   173-422-070

PDFWAC 173-422-065

Diesel vehicle exhaust emission standards.

(1) Diesel motor vehicles subject to this chapter shall meet the following opacity standards when using the snap-acceleration test procedures specified in WAC 173-422-075.
Model Year
Opacity (%)
1991 and earlier
55
1992 and later
40
(2) When using the Acceleration Simulation Mode (ASM) test procedures specified in WAC 173-422-070 adapted for the testing of diesel cars or light trucks (0-8500 pounds gross vehicle weight rating), these vehicles shall meet a 20% opacity standard.
[Statutory Authority: RCW 70.120.120. WSR 02-12-072 (Order 02-04), § 173-422-065, filed 6/3/02, effective 7/4/02. Statutory Authority: Chapter 70.120 RCW. WSR 95-06-068 (Order 93-35), § 173-422-065, filed 2/28/95, effective 3/31/95; WSR 93-10-062 (Order 91-46), § 173-422-065, filed 5/3/93, effective 6/3/93.]
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