December 19, 1991IN THE MATTER OF: ) R90—20DIESEL VEHICLE EXHAUST ) (Rulemaking)OPACITY LIMITS ) PROPOSED RULE.
(P.C.
#131, p.
1.) DDC notes that, for 1991, this anomaly has been
corrected with revisions to the engine control software.
The Board declines to accept the amendment proposed by .DDC.
The problem is that DDC has not provided enough
information at this juncture for the Board to even consider itsrequest for relief, much less act upon it. The Agency’s comment (P.C. #133) in response to our SecondNotice’ proposal seeks to reinstate the visual opacity test as anenforcement mec...
Allowed
scantmp3
Adobe Portable Document Format (.pdf) - application/pdf
R 90-020 12_19_91 Dumelle Supplemental Opinion and Order.pdf
... 
