The basis for the industrial cost recovery rates and charges included in § 53.02 are as follows.
(A) Treatment plant.
(1) Total estimated federal grant amount to be awarded for the construction of the treatment plant under Project Number C-180574 amounts to approximately $513,086.25.
(2) The assignment of treatment facilities costs to flow and loadings is in accordance with EPA suggestions, where unit process cost studies are not undertaken. The percentage of cost identified with the various treatment facilities are as follows:
Treatment of waste volume | 40% |
Treatment of suspended solids | 30% |
Treatment of B.O.D. | 30% |
Total | 100% |
(3) The design capacity of the treatment plant is as follows.
(a) Flow. Average daily flow 130,000 gallons times 365 days, equals 47.45 mg average annual design flow capacity.
(b) Suspended solids. Design capacity 240 mg/l, times annual flow capacity 47.45 mg times weight will result in 94,976 pounds average annual design capacity.
(c) Biochemical oxygen demand. Design capacity 200 mg/l, times annual flow capacity 47.45 mg, times weight will result in 79,147 pounds average annual design capacity.
(4) Industrial cost recovery period will be 30 years.
(5) Average annual basis for the cost recovery charge will amount to $17,102.88.
(6) Total annual basis for the cost recovery charge allocated to treatment plant functions, is as follows:
(a) Treatment of waste volume;
(b) Treatment of suspended solids; and
(c) Treatment of B.O.D.
(7) The industrial cost recovery rates for the treatment charges are computed on the basis of the annual functional costs of treatment, divided by average annual design capacity in the following manner.
(a) Treatment of waste volume. Annual functional cost $6,841.15 divided by annual capacity 47.45 mg equals $14 per 1,000 gallons.
(b) Treatment of suspended solids. Annual functional cost $5,130.86 divided by annual capacity 94,976 equals $0.05 per pound.
(c) Treatment of biochemical oxygen demand. Annual functional cost $5,130.86 divided by annual capacity 79,147 equals $0.06 per pound.
(8) The rates computed in division (A)(7) above, would result in total recovery of the federal grant amount if all users were subject to the industrial cost recovery requirement, and provided, that the treatment plant was operated at capacity during the cost recovery period. Therefore, these rates will ensure that each industrial user will pay only that portion of the federal grant amount applicable to the costs of the treatment facilities actually utilized to treat industrial wastes, as determined by each industrial users flow and pollutant loadings.
(B) Sewer collector system. Collecting mains and intercepting sewers.
(1) The total estimated federal grant amount to be awarded for the construction of the collecting mains and intercepting sewers (which excludes the cost of lateral sewers) under Project Number C-180574 amount to approximately $429,818.
(2) Cost recovery period will be 30 years.
(3) Average annual basis for cost recovery charge will amount to $14,327.
(4) Each year, the annual cost basis will be divided by the average number of equivalent household sewer connections (household sewer connection is equivalent to the service of the five-eighths-inch or three-fourths-inch water meter) to determine the average charge per equivalent household sewer connection. The average number of equivalent household sewer connections used during the year will be determined by adding the number of equivalent connections in use at the beginning of the year, to the number of equivalent connections in use at the end of the year, and divide the sum by two.
(5) The number of equivalent household sewer connections will be based on the various sizes of water meters. The larger sized water meters represent larger capacity and the ability to demand more service than the average household meter. The conversion factors to determine equivalent sized meters shall be as follows.
Meter Size | Ratio to 5/8-inch to 3/4-inch Water Meter |
Meter Size | Ratio to 5/8-inch to 3/4-inch Water Meter |
5/8-inch to 3/4-inch | 1.0 to 1 |
1-inch | 2.5 to 1 |
1-1/2-inch | 5.7 to 1 |
2-inch | 10.0 to 1 |
3-inch | 23.0 to 1 |
4-inch | 40.0 to 1 |
6-inch | 91.0 to 1 |
(6) The annual industrial charge for each industrial user will be determined by multiplying $1,238.55 (average charge per equivalent household connection) times the average number of equivalent household sewer connections utilized by each industrial user during the year. The average number of equivalent household sewer connections used by each industrial user during the year will be determined on an individual basis, in the same manner as indicated in divisions (B)(4) and (B)(5) above.
(7) The industrial cost recovery surcharge computed above, would result in total recovery of the federal grant amount for collecting mains and intercepting sewers, if all users were subject to the industrial cost recovery requirements. Therefore, the surcharge rate will ensure that each industrial user will pay only that portion of the cost of collecting mains and intercepting sewers, as attributed to industrial users, on the basis of actual usage.
(Ord. 1976-1, passed 12-13-1976)