polling day means the day fixed for holding the poll at an election;
Average Daily Availability means the average daily Availability for the immediately preceding Fiscal Quarter.
Quarterly (1/Quarter) sampling frequency means the sampling shall be done in the months of March, June, August, and December, unless specifically identified otherwise in the Effluent Limitations and Monitoring Requirements table.
Model Year means the CI engine manufacturer’s annual production period, which includes January 1st of a calendar year, or if the manufacturer has no annual production period, the calendar year.
Billing Date means the date upon which the monthly statement is generated and debited to the customer's account.