(A) An industrial waste survey is required prior to a user discharging wastewater containing in excess of the following average discharge limits:
40 mg/l TKN
0.003 mg/l arsenic
0.003 mg/l cadmium
0.061 mg/l copper
0.015 mg/l cyanide
0.049 mg/l lead
0.0003 mg/l mercury
0.021 mg/l nickel
0.005 mg/l silver
0.05 mg/l total chromium
0.175 mg/l zinc
20.0 mg/l ammonia nitrogen
25.0 mg/l oil and grease (petroleum and mineral origin)
(B) Industrial waste survey information will be used to develop user-specific local limits when necessary to ensure that the POTW's maximum allowable headworks loading is not exceeded for particular pollutants of concern. User-specific local limits for appropriate pollutants of concern shall be included in wastewater permits. The POTW Director may impose mass limits in addition to, or in place of, concentration-based limits.
(Ord. passed 6-22-94; Am. Ord. O-1996-11, passed 5-7-96; Am. Ord. O-2008-11, passed 3-18- 08; Am. Ord. O-2013-13, passed 5-21-13)