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.
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.
Production Period is the period that for winter cereal advances commences October 1, 2021 and terminates September 30, 2023; for advances on all other field crops, honey, hogs, goats, sheep and lambs commences April 1, 2022 and terminates September 30, 2023; and for advances on cattle, continuous flow cattle, and bison commences on April 1, 2022 and terminates on March 31, 2024.
Semi-annual (2/Year) sampling frequency means the sampling shall be done during the months of June and December, unless specifically identified otherwise.
Yearly (1/Year) sampling frequency means the sampling shall be done in the month of September, unless specifically identified otherwise in the effluent limitations and monitoring requirements table.