1. (a) If the through put of a gasoline dispensing facility that had not previously met the criteria of Env- Or 501.02(b) becomes equal to or greater than 10,000 gallons of gasoline per rolling 30-day period, the owner or operator shall comply with all applicable requirements of this chapter within 180 days after the date the facility becomes subject to this part.
2. (b) The owner or operator of a gasoline dispensing facility that begins operation after the effective date of this chapter and that meets the criteria of Env-Or 501.02(b) shall comply with all applicable requirements of this chapter upon commencement of operation.
3. (c) The owner or operator of a gasoline dispensing facility that already is subject to stage I requirements and that undergoes substantial modifications to any tank or piping shall comply with all applicable requirements of this chapter as to the complete stage I system, including all modified components, upon completion of the modifications.
4. (d) If the monthly throughput of a gasoline dispensing facility is 100,000 gallons of gasoline per month or more as of the effective date of this chapter, the owner or operator shall comply with Env-Or 504.06(a)(1) within 180 days of the 2022 effective date of this chapter.

5. (e) If the monthly throughput of a gasoline dispensing facility increases to 100,000 gallons of gasoline per month or more subsequent to the 2022 effective date of this chapter, then:

   1. (1) The owner or operator shall comply with Env-Or 504.06(a)(1) within 180 days of the throughput becoming equal to or greater than 100,000 gallons of gasoline per month; and
   2. (2) The facility shall continue to be subject to Env-Or 504.06(a)(1) even if a reduction in throughput occurs to below the specified threshold.

Source. (See Revision Note #1 and Revision Note #2 at chapter heading for Env-Or 500) #10229, eff 11-17-12; ss by #13458, eff 10-7-23 (formerly Env-Or 504.11)