NORTHERN SONOMA COUNTY AIR POLLUTION CONTROL DISTRICT
RULE 618 - MODIFICATION OF INCREMENTS OF PROGRESS SCHEDULE
If a person granted a variance with a schedule of increments of progress, files an application for modification
of the schedule and is unable to notify the Hearing Board sufficiently in advance to allow the Hearing Board to
schedule a public hearing, the Hearing Board may grant a one time interim authorization which is valid for not
more than 30 days, to continue operation pending decision of the Hearing Board on the application.
The interim authorization shall not be granted for a requested extension of a final compliance date or where the original variance expressly required advance application for the modification of an increment of progress. (H&S 42351.5)