(A) Monitoring. Four types of monitoring are utilized for purposes of determining compliance with a user’s permit: scheduled, unscheduled, demand or investigative monitoring, and industrial monitoring.
(1) Scheduled monitoring. The POTW, through appropriate personnel, conducts systematic sampling and comprehensive inspection of significant industrial contributors to the POTW in accordance with the predetermined permit schedule.
(2) Unscheduled monitoring. The POTW conducts an unannounced check of industrial discharges, to spot check randomly all sources within the collection system.
(3) Investigative/demand monitoring. In response to suspend or known violations of a permit, discovered through self-monitoring reports, routing sampling, or public complaint, the Superintendent or Assistant Superintendent may require immediate collection of samples for testing to verity compliance with the permit. Sampling may be collected by POTW personnel or be required to be collected by the industrial user.
(4) Industrial self-monitoring. Each industrial user, as a condition of its permit, must collect samples for analysis on a frequency determined by the permit. This frequency may range from annually to more than monthly, depending on the industrial user, the history of compliance, the type of discharge, and other factors. The Superintendent may also require testing more frequently than stated in the permit as part of an enforcement action.
(B) Inspection. Prior to establishing a schedule for self-monitoring, an inspection of the industrial user is performed by the Assistant Superintendent for Sewer Systems to acquire an understanding of the specified industrial processes and the wastestreams. Future on-site inspections are conducted according to permit conditions, at least annually and more often if necessary. Included in each inspection is an inspection of the industrial user’s self-monitoring facility. A form entitled “inspection report” must be completed by the Assistant Superintendent, with a copy provided to the appropriate personnel of the industrial user. A copy of this form is attached hereto for reference.
(C) Chain of custody. To ensure the validity of samples, the POTW uses a chain of custody document which accompanies the sample throughout the testing process. A copy of this form is attached. Each person handling the sample must indicate on the form when and by whom the sample is received.
(D) Testing procedures. All handling, preservation, measurement, testing, and analysis of the characteristics of waters and wastes shall conform to the methods and procedures set forth at 40 CFR Part 136, or methods approved by the administrator of the EPA.
(Ord. 95-08, passed 3-7-95; Am. Ord. 11-30, passed 12-13-11; Am. Ord. 13-25, passed 11-12-13)