§ 98-49. Industrial waste surcharges.

(a)

Users discharging industrial wastes which exhibit none of the characteristics of wastes prohibited in section 98-37, other than excessive BOD or suspended solids, having a concentration during a 24-hour period average of suspended solids or BOD content in excess of 500 mg/l, shall be required to pretreat the industrial wastes to meet the requirements of normal domestic sewage. However, such wastes may be accepted by the city for treatment if all the following requirements are met:

(1)

The waste will not cause damage to the collection system.

(2)

The waste will not impair the treatment process.

(3)

The user agrees to pay a surcharge over and above the existing sewer rates with the basics for surcharges on industrial waste to be computed in the following manner:

The volume of water usage as averaged from the preceding months of November, December and January expressed in million gallons per month (mgm) shall be used to compute the total pounds of BOD and TSS discharged into the POTW's sewers.

Avg. vol. (mgm) × 8.34 lbs. × (BOD mg/l - 250 mg/l) = lbs. BOD discharge

Avg. vol. (mgm) × 8.34 lbs. × (TSS mg/l - 250 mg/l) = lbs. TSS discharge

Lbs. BOD discharge × $0.47/lb. BOD treatment = BOD surcharge per month

Lbs. TSS discharge × $0.45 cost/lb. TSS treatment = TSS surcharge per month

Total surcharge/month = BOD surcharge/month + TSS surcharge/month

(b)

The basis for determining the surcharge shall be reviewed biennially and shall be adjusted to reflect any increase or decrease in wastewater treatment costs based on the previous year's experience.

(Ord. No. O-15-11, § I, 4-11-2011)