A. Applications For Service: No sewer connecting any customer to the city sanitary sewer system shall be made by any person or the city except upon written application furnished by the owner of the premises to which the sanitary sewer service is to be furnished, or his authorized agent.
B. Guarantee Deposit:
1. There will be no guarantee deposit for property owners residing in or on the premises being served. Nonproperty owners of property served by a sewer connection will be required to make a deposit in an amount set forth in the sewer rate schedule.
2. The sewer guarantee deposit will be combined with the water guarantee deposit and applied to the combined water, garbage and sewer statement toward settlement of the final account of the customer and any excess remaining shall be refunded to the customer.
C. Charges:
1. The deposit, connection charge, and monthly user charge will be as set forth in the sewer rate schedule. This schedule shall be enacted annually in the form of a resolution. The connection charge and monthly user charge will be those established in resolutions 10-79-80 and 13-77-78, respectively. The deposit will be that established at the regular council meeting in January 1980. Subsequent resolutions will be enacted at the regular council meeting in June of each year beginning June 1980. Should the common council fail to enact a new resolution, the resolution of the previous year shall continue in effect until a subsequent resolution is passed which amends said resolution.
2. In addition to the collection of the regular rates established by the sewer rate schedule, the city may collect from the customer a proportionate share of any privilege, sales, or use tax levied or imposed by any governmental authority upon the gross revenues received by the city from such service.
3. All fees for sewer service on the utility bill, including water, garbage and sewer service, are payable upon presentation at the office of the city clerk. If not paid by the first day of the following month, a penalty of ten percent (10%) of the total billing shall be added on account of such nonpayment. If the said fee for sewer service is not paid when due, the water service to said premises may be shutoff as in the case of delinquency in payment of water bills and such service shall not be restored without the payment in full to date plus the reconnection charge. Reconnection charges will be as set forth in the annual rate schedule. (Ord. 1-79-80, 1-11-1980)
D. Basis For User Charge System:
1. The city of Tombstone treatment works is primarily flow dependent. Therefore, the following formula is used to calculate user charges:
Cu = (Ct/Vt) Vu
Where Ct = Total operation and maintenance (O&M), including replacements per unit of time
Cu = A user's charge for O&M per unit of time
Vu = Volume contribution from a user per unit of time
Vt = Total volume contribution for all users per unit of time
2. In the event BOD, suspended solids, or other pollutant concentrations from a user exceed the range of concentration of these pollutants in normal domestic sewage, a surcharge added to the base charge (above) will be levied. The surcharge will be computed by the formula below:
Bc = O&M cost for treatment of a unit of biochemical oxygen demand (BOD)
CS = [Bc (B) + Sc (S) + Pc (P)] Vu
Where Cs = a surcharge for wastewaters of excessive strength
Bc = O&M cost for treatment of a unit of biochemical oxygen demand (BOD)
B = Concentration of BOD from a user above a base level
Sc = O&M cost for treatment of a unit of suspended solids
S = Concentration of SS from a user above a base level
Pc = O&M cost for treatment of a unit of any pollutant
Vu = Volume contribution from a user per unit of time
E. Method To Determine Average Water Usage: The water used in Tombstone comes from two (2) sources, one being private wells, the other springs located twenty five (25) miles southwest of the community in the Huachuca Mountains. The following method has been used to determine the average water usage for businesses and residences.
1. The city of Tombstone reviewed water service billings by separating into related categories as follows: residential, apartments, hotels and motels, doctors' offices, restaurants, service stations, churches, general offices, general businesses, grocery stores and laundries.
2. Four hundred seventy five (475) residences and ninety (90) commercial establishments were used to formulate an average; there was no comparison made on the size of residential families in order to avoid possible discrimination. The total water usage for one month was obtained, and then divided by four hundred seventy five (475) in order to determine the average residential usage to be four thousand two hundred (4,200) gallons per month. Commercial water usage for one month was obtained by review of consumption for the respective billings.
F. Estimated Sewage Flows By User Class:
User Class
| Average Monthly Production
|
User Class
| Average Monthly Production
|
Residential unit1 | 5,200 |
Apartment2 | 2,900 |
Hotel/motel unit3 | 1,150 |
Trailer/mobile home | |
Manager residence | 5,200 |
Mobile space | 2,900 |
RV space | 1,750 |
Commercial | |
Public4 | 11,500 |
Private | 4,500 |
Schools | |
Winter (9 month) | 115,000 |
Summer (3 month) | 30,000 |
Church | 4,500 |
Notes: | |
1. Includes townhouses. | |
2. Includes duplexes, triplexes and apartment buildings. | |
3. Includes rooming house or attached rental. | |
4. Businesses with public facilities, i.e., saloons, etc. | |
1. After each category's average is figured, the average is multiplied by the number of actual users in the same category, thus arriving at a total average usage for such category. The sum of the total average usage of each category then equals the total average usage for all categories. This figure is the total volume of all users per unit of time.
2. The city of Tombstone will review not less often than every two (2) years the water contribution of users and user classes, the total costs of operation and maintenance of the treatment works, and its approved user charge system. The city shall revise the charges for users or user classes to accomplish the following:
a. Maintain the proportionate distribution of operation and maintenance costs among users and user classes as required herein;
b. Generate sufficient revenue to pay the total operation of maintenance costs necessary to the proper operation and maintenance (including replacements) of the treatment works; and
c. Apply excess revenue collected from a class of users to the costs of operation and maintenance attributable to that class for the next year and adjust the rate accordingly.
3. The city of Tombstone will notify each user at least annually in conjunction with a regular bill, of the rate and that portion of the user charges or ad valorem taxes which are attributable to wastewater treatment services.
G. Inconsistent Agreements: The city of Tombstone may have preexisting agreements which address: 1) the reservation of capacity in the district's treatment works, or 2) the charges to be collected by the district in providing wastewater treatment services or reserving capacity. This user charge system shall take precedence over any terms or conditions of agreements of contracts between the grantee and the users (including industrial users, special districts, other municipalities, or federal agencies or installations) which are inconsistent with the requirements of section 204(b)(1)(A) of the act and these regulations. (Ord. 80-81, 1980)