§ 53.031 LIMITATIONS OF WASTEWATER STRENGTH.
   (A)   The National Categorical Pretreatment Standards, located in 40 C.F.R. Chapter I, Subchapter N, Parts 405-471, are hereby adopted and incorporated by reference into this code and include amendments to those standards that occur hereafter as the same are published in the C.F.R. with effective dates as fixed therein. An application for modification of the National Categorical Pretreatment Standards may be considered by the Town Council when the wastewater treatment plant achieves consistent removal of the pollutants described herein.
   (B)   State and local requirements and limitations on discharges shall be met by all dischargers when such requirements and limitations are more stringent than federal requirements and limitations.
   (C)   No discharger shall use potable water to dilute a discharge as a substitute for adequate treatment of prohibited substances to achieve compliance with the standards set forth in this division.
   (D)   Under no circumstances shall a discharge release water or waste containing concentrations of the following substances in amounts exceeding the stated values:
Parameter
1-Day Maximum (mg/l)
4-Day Average (mg/l)
Parameter
1-Day Maximum (mg/l)
4-Day Average (mg/l)
Aluminum
5.0
2.5
Arsenic
1.0
0.2
Cadmium
2.7
1.2
Copper
5.0
3.5
Cyanide
1.5
0.5
Lead
2.0
0.8
Mercury
0.1
0.005
Nickel
5.0
2.5
Total Chromium
7.5
5.0
Zinc
10.0
6.0
 
(1996 Code, § 108.06) (Ord. 487, passed 1-25-1994; Ord. 1997-3, passed 6-9-1997; Ord. 99-5, passed 5-10-1999) Penalty, see § 53.999