§ 61.21. Abnormal strength waste surcharge factor.

For those customers which the city has agreed to serve and either the customer or the city has determined that the strength of the sewage is greater than 300 parts per million (ppm) of biochemical oxygen demand (BOD, or chemical oxygen demand (COD)), or total suspended solids (TSS) then an abnormal strength surcharge will be applied to the monthly bill. The greater concentration of either BOD or COD will be used in the surcharge calculation, but not both. The surcharge factor is calculated in the following manner: Concentration BOD or COD in ppm less 300 ppm plus concentration of TSS in ppm less 300 ppm totaled and then divided by 300 ppm. The total monthly bill is calculated by the addition of one plus the surcharge factor totaled and then multiplied by the normal bill.

(Ord. 94-44, passed 9-26-94)