(a) The City, as the recipient of federal funds as a share of construction costs for the public wastewater collection and treatment facilities must meet the requirements of, and has agreed to, the Federal Water Pollution Control Act, as amended (FWPCA), contained in the Clean Water Act of 1977 (Public Law 95-217, or the "1977 Act"), and does hereby establish an industrial cost recovery system.
(b) Sanitary wastes are the wastes discharged from the average residential user in the City's service area. The strength of the average residential waste discharge in the City service area, as established herein, is 200 milligrams per liter of BOD and 250 milligrams per liter SS and these concentrations shall be applied in determining equivalent volumes of process waste or combined discharges of sanitary and process wastes for the purposes of industrial cost recovery. The limits of BOD and SS shall be computed as follows:
(1) 200 x .025 x 8.34 = 42 allowable pounds of BOD.
(2) 250 x .025 x 8.34 = 52 allowable pounds of SS.
(c) The approving authority shall determine the identity of possible and probable industrial users of the City's treatment facilities by:
(1) Conducting, initially and on an annual basis, a review of the accounts of City water users whose metered water supply records indicate that 25,000 gallons per day or more of water is drawn by such user.
(2) Inspection, observation, measurement, sampling and testing, initially and on an annual basis, to determine the equivalent volumes of process or combined discharges of sanitary and process waste contributions of such possible and probable industrial users.
(d) Those users so determined to be industrial users under the above provisions shall be required to participate in the City industrial cost recovery program.
(e) The City industrial cost recovery program shall be in effect for a period of thirty years.
(f) Except as otherwise provided by the Act, those industries required herein to participate in the City's industrial cost recovery program shall be required to make payment to such program no less often than annually. The first payment by an industrial user shall be made not later than one year after the user begins use of the treatment facilities.
(g) Those industrial users entering into an agreement with the City to reserve a certain capacity in the treatment works, shall make industrial cost recovery payments based on the total reserved capacity in relation to the design capacity of the treatment works. If the discharge of an industrial user exceeds the reserved capacity in volume, strength or delivery flow rate characteristics, the user's industrial cost recovery payment shall be increased to reflect the actual use of the treatment works. If there is no agreement between the industrial user and the City regarding reserve capacity, and there is a substantial change in the strength, volume or delivery flow rate characteristics of an industrial user's discharge, such user's share shall be adjusted proportionately.
(h) If there is an upgrading of the treatment works, each existing industrial user's share shall be adjusted proportionately.
(i) If there is an expansion of the treatment works, each industrial user's share shall be adjusted proportionately, except that a user with reserved capacity shall incur no additional industrial cost recovery charges unless the user's actual use exceeds its reserved capacity.
(j) The basis of design for each unit operation and the cost identified with each unit of operation shall form the basis of the industrial cost recovery charges. The major unit operation and their basis of design are identified as follows:
Process Unit | Design Parameter |
Grit Chamber | Flow |
Grit Conveyor and Handling | Solids identified as grit |
Comminution | Flow |
Raw Wastewater Pumping | Flow |
Primary Settling | Flow |
Screw Pumps | Flow |
Aeration Basins and Aeration Equipment | Organic Loading |
Secondary Settling | Flow |
Chlorination | Flow |
Thickener | Solids |
Digesters | Solids |
Sludge Dewatering Mechanisms and Sludge Pumping Systems | Solids |
The remaining capital expenditures not identified under a major unit process will be proportioned in the same ratios as the totals for the major unit processes. The industry's industrial cost recovery charge shall then be calculated on the basis of its contribution of each of the three design parameters (flow, BOD and SS) multiplied by the parameter's unit cost. Calculations supportive of each industrial user's industrial cost recovery charge shall be filed at the office of the approving authority. (Ord. 1979-11. Passed 1-30-79.)