13.13.080 Commercial Class 5 Requirements.
A. Customers classified within Commercial Class 5 shall install approved wastewater flow metering, recording, and totalizing equipment, and refrigerated, flow-proportioned sampling equipment.
B. If Commercial Class 5 customers do not supply approved monitoring equipment, they shall provide to the Department every three months a wastewater loading report for periods of normal operations based upon a minimum seven days of flow proportioned sampling. The report shall be prepared by an independent licensed professional engineer or independent laboratory approved in advance by the Department. The form and manner of such a report shall be prescribed and approved in advance by the Department.
C. Designs and plans of wastewater flow measurement and sampling installations must be submitted to the Department for approval prior to installation.
1. Flow or level sensor equipment must be insensitive to, or protected from, solids accumulation, temperature variations, and surface foaming. The equipment must be capable of being readily calibrated and holding said calibration for at least three months after calibration.
2. Wastewater sampling equipment must obtain flow proportioned samples without distorting the concentration of any waste constituent.
3. Flow instrumentation must include a means for determining daily peak flow rate and a digital flow totalizer reporting in thousands of gallons. The totalizer must not turn over more than once per year during the first year of installation.
4. The Department shall be permitted access to the monitoring equipment at all times.
5. The Commercial Class 5 customer shall maintain the monitoring equipment's accuracy and good working order at all times at his/her sole expense.
6. If the equipment becomes inoperable, or for any reason is not capable of providing monitoring information, the customer shall provide a wastewater report as described in subsection B of this Section.
D. Each Commercial Class 5 customer shall provide an approved wastewater monitoring access point to its wastewater discharge entering the public sewer system. The Department shall be permitted access to all wastewater monitoring points.
E. The Department shall be empowered to require installation and maintenance, at the Commercial Class 5 customer's expense, of wastewater flow monitoring equipment and proportional flow sampling equipment where wastewater loadings cannot be reasonably determined. The Department shall be given complete access to all such equipment and access points.
F. Any Commercial Class 5 customers, after being notified to install flow monitoring and sampling equipment, shall have 180 days to install the equipment. Otherwise, the Department shall have the equipment installed and will invoice the commercial unit for the installation cost.
G. Any Commercial Class 5 customer initiating a discharge, or increasing the rate of discharge of wastewater or pollutants, shall need approval prior to initiation of, or increase of, such discharge.