For industrial discharges, wastewater quality shall be determined from actual testing or from historical data, whichever is appropriate. The Council, on recommendation of the Town Manager, shall, as necessary, modify these determinations and/or revise classifications in a continuing attempt to maintain equitable charges for the service required.
(A) Testing by direct sampling, utilizing recognized field techniques, equipment and procedures shall be used for all industrial users. The BOD5 test shall be considered the standard test; however COD or TOC tests may be substituted in cases where it has been determined by the Wastewater Treatment Department that the BOD5 test is not representative of actual wastewater loading. Wastewater characteristics shall be determined by the Wastewater Treatment Department on the basis of monitored wastewater discharged, a certified statement from the user or on the best available data as to the characteristics of such discharges.
(B) Any change in the ongoing process(es) employed by a user contributing industrial waste which results in a variation of more than 25% in one or more of the effluent loading concentrations shall be reported to the Wastewater Treatment Department within 30 days of such change.
(C) If it is determined through testing that a significant variation exists between the user’s certified data and the discharge characteristics monitored by the Wastewater Treatment Department, the Department shall adjust the sewer use charge based on the monitored data from the original date of certification, unless written communication has occurred, notifying the Wastewater Treatment Department of changes in loading and giving specific dates of changes.
(D) Where sampling and gauging of a specific user is not practical for physical, economic, safety or other reasons, the Wastewater Treatment Department shall designate values for concentrations of the wastes discharged into the sewer system for all users in the same standard industrial classification or sub-classification.
(Prior Code, § 16-2-2) (Res. 01-06, passed - -2001; Ord. 09-36, passed - -2009; Ord. 18-02, passed 5-8-2018)