A. Beginning January 1, 1966, the sewer rent for collection and treatment of industrial wastes discharged into the sewer system by industrial users shall be based upon a premium charge for extra-strength waste applied as a factor against the charges for sanitary sewage computed in accordance with § 226-10A. The premium charge shall be based on the following formula for determination of the multiplication factor:
*Where these figures are less than 300 ppm in BOD or 350 ppm in suspended solids or five ppm in chlorine demand, the value in the parentheses () shall be equal to one. | |
**In cases where the suspended solids, in the opinion of the Mayor and Common Council, do not represent the true characteristics of the solids loading, the Mayor and Common Council reserves the right to use total solids instead of suspended solids. |
B. In cases where industrial users using the sewer system use water supplied from any source and the water so supplied is not entirely discharged into the sewer system, the measured flow to be used as a basis for the computation of the sewer rent shall be determined as set forth in § 226-8D and E.