§ 52.022  INDUSTRIAL WASTE SURVEY AND LOCAL LIMITS.
   (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)