The monthly amount of pollutants subject to the surcharge will be based on the average loading per facility operating day, in excess of 250 mg/l for BOD5 or suspended solids, in excess of 100 mg/l for biodegradable oils and grease, in excess of 30 mg/l for ammonia, in excess of zero (0) mg/l for hydrogen sulfide, times the number of operating days per month.
(Prior Code, § 51.156)