b. Gasoline storage/transfer facilities, chemical manufacturing plants, and oil and gas extraction facilities having industrial wastewater discharges of 25,000 gallons or more on any one day ;
(oil and gas extraction facilities; having; industrial wastewater discharges of 25,000 gallons or more; T:on any one day)
oil and gas extraction facilities
having
industrial wastewater discharges of 25,000 gallons or more T:on any one day