Chapter 14 SEWERAGE*

Section 14-99 Effluent limitations.

(a)    No user shall discharge wastewater  which exceeds the following concentration limits at the  point of discharge into the city's collection system:

      Daily Maximum               mg/

1.    Arsenic                            0.30

2.    Cadmium                        0.14

3.    Chromium +3                  3.68

4.    Chromium +6                  2.84

5.    Copper                             0.24

6.    Cyanide                            0.082

7.    Lead                                 0.116

8.    Mercury                            0.00025

9.    Nickel                               0.37

10.    Selenium                        0.01

11.    Silver                              0.35

12.    Zinc                                0.41

13.    BOD                               300

14.    COD                               235

15.    Suspended solids          300

16.    Oil and grease              100

17.    Ammonia                       20

18.    Total toxic organics       2.0

(b)    The above concentration limits  are set by the city council as maximal. The limits may be reduced by order of the utilities superintendent at any time when it is found that the wastewater  plant does not meet its proper limits of treatment, and the utilities superintendent may establish concentration limits for other substances as may be appropriate. All users on the system must  comply with such revised standard limits.

(Code 1958,  19-53; Ord. of 4-11-88,  I; Ord. of 11-8-93,  IV;  Ord. of 1-9-95,  I; Ord. of 5-22-95(1),   VII; Ord. of 6-23-97,   VI; Ord of 2-24-03)

(14-99(a), Amended, 02/24/2003, Prior Text)