CHAPTER 22
SEWERS
Section:
22a. Sewer construction and maintenance standards
Section 22-1-1 Definitions
Unless the context specifically indicated otherwise, the meaning of the terms used in this Chapter shall be as follows:
Section 22-1-2 Depositing waste of public or private property prohibited.
It shall be unlawful for any person to place, deposit, or permit to be deposited in any unsanitary manner on public or private property within the City of Grantsville, or in any area under the jurisdiction of said City, any human excrement, garbage, or other objectionable waste.
Section 22-1-3 Befouling waters prohibited.
It shall be unlawful to discharge to any natural outlet within the City of Grantsville, or in any area under the jurisdiction of said City, any sewage or other polluted waters, except where suitable treatment has been provided for in accordance with subsequent provisions of this Chapter.
Section 22-1-4 Unlawful disposal facilities prohibited.
Except as hereinafter provided, it shall be unlawful to construct or maintain any privy, privy vault, septic tan, cesspool, or other facility intended or used for the disposal of wastewater.
Section 22-1-5 Use of public sewers required penalties for violation.
The owner(s) of all houses, buildings, or properties used for human occupancy, employment, recreation, or other purposes, situated within the City and abutting on any street, alley, or right-of-way in which there is now located or in the future will be located in city public sanitary System, within 300 feet of said system, is hereby required, at the owner(s) expense, to install suitable sewer facilities therein, and to connect such facilities directly with the public sewer in accordance with the provisions of this Chapter, within 60 days after the date of official notice given by the City to do so, provided that said sewer is within 30 feet of the owners property line. It shall be a Class "C: Misdemeanor for any person to fail to connect to the sewer system who is the occupant, owner or user of any structure whose outermost property line is within 300 feet of the sewer system and each day of failure to connect shall be deemed a separate offense.
Section 22-1-6 Extraterritorial Jurisdiction.
Under the authority of Section 10-8-15, Utah code Annotated, 953, as amended, Grantsville City hereby exercises its extraterritorial jurisdiction to protect its culinary water system and its source from exposure to underground percolation from any ecological injury, pollution or contamination of the watershed or exposure of the System and water-polluting underground percolation influencing the culinary waterworks source. Grantsville City under authority of Sections 10-8-38, Utah code Annotated as amended, declares that all lands, (whether inside or outside the incorporated limits of Grantsville City) within 300 feet on either side of collections or interceptor line and the inlet facilities or one or any combination of the same (the system) are a part of the wastewater facilities of Grantsville City and System and the City hereby requires that the owner or occupant of any land upon which any structure is located an on the nearest property line of any kind within 300 feet of any lateral, interceptor or collection portion of the System shall connect to the System, the failure of which shall constitute a public offense and punishable by law as a Class "B" Misdemeanor.
Sections 22-1-7 Private wastewater disposal
Where a public sanitary or combined sewer is not available under the provisions of Sections 22-1-5, the building sewer shall be connected to a private wastewater disposal system complying with the provisions of this Chapter and applicable State and county Codes.
Sections 22-1-8 Permit for private wastewater system
Before commencement of construction of a private wastewater disposal system the owner(s) shall first obtain a written permit issued by the Citys water and sewer superintendent. The application for such permit shall be made on a form furnished by the City, which the application shall supplement, by any plan specifications and other information as deemed necessary. A permit and inspection fee shall be paid to the City at the time the application is filed.
Section 22-1-9 Inspection of private wastewater system
Permission to use the system for a private wastewater disposal system shall not become authorized until the installation is completed in compliance with the approved plans applicable with all State and County Codes and this Chapter. Authorized City employees shall be allowed to inspect the work at any stage of construction. The applicant for the permit shall notify the City Offices when the work is ready for final inspections, and before any underground, portions are covered. The inspection shall be made within forty-eight (48) hours of the receipt of notice by the City Offices.
Section 22-1-10 Standards for private wastewater system
The type, capacities, location and layout of a private wastewater disposal system shall comply with all recommendations of the Utah State Department of Environmental Quality or the Local Health Department. No permit shall be issued for any private wastewater disposal system employing subsurface soil absorption facilities where the are of the lot is less then 10,000 square feet. No septic tank or cesspool shall be permitted to discharge to any natural outlet. The owner of a private wastewater system shall operate and maintain the private disposal facilities in a sanitary manner at all times, and at no expense to the City. No requirement contained in this Chapter shall be construed to interfere with the requirements that are imposed by the Utah State Department of Environmental Quality or the Local Health Department.
Section 22-1-11 Disconnection of private wastewater system
At such time as a public sewer becomes available to a property served by a private wastewater disposal system, as provided in this Chapter, a direct connection shall be made to the public sewer within twelve (12) months, in compliance with this Chapter, and the private disposal system shall be disconnected and made inoperable.
Section 22-1-12 Unauthorized use of public wastewater system prohibited permit required
No unauthorized person(s) shall uncover, make any connections with or opening into, use, alter, or disturb any public sewer or wastewater system or appurtenance thereto without first obtaining a written permit from the City.
Section 22-1-13 usage and permit fee
Usage fees shall be governed by a basic determinant of the amount of culinary water used at the premises as measured by each culinary water meter as follows:
In every case, the owner(s) or agents shall make application on a form obtained from the City. The permit application shall be supplemented by any plans, specifications, or other information considered pertinent in the judgement of the City water and sewer Superintendent.
Section 22-1-14 Responsible party
Irrespective of the occupant, user, tenant, co-tenant, permissive user, or any other person, firm, partnership, corporation or entity being in possession of the premises to which a connection is supplied or service made available, the owner of the premises according to the records of the Tooele County recorder shall be legally responsible for the payment of all charges, fees, assessments and any other payment of all charges, fees, assessments, and other obligation or liability or a user. If any delinquent sewer connection, sewer user, charge, repairs, maintenance, or any other obligation shall be deemed by the Grantsville City as a lien upon all of the real property on which any use is made from a sewer connection. Water services to delinquent property shall be turned off by the City for failure to pay any and all sewage and wastewater fees, assessments, charges or liability and will not be turned on again to those premises where a delinquency occurs unless and until all liabilities to the City for sewer services are paid in full. All payments for utilities, whether "water" or "sewer" shall be credited first to sewer assessments, fee or charge.
Sections 22-1-15 Sewer service billing delinquent or past due bills
Charges for sewer service shall be rendered each month at established rates on the same bill with City water or garbage bill. Each bill shall show separately the amount of the sewer service charges from the water and garbage bill, by the total thereof shall be considered one charge for the combined use of the sewer, water or garbage service. The portion of the bill rendered for sewer service cannot be paid separately from the portion rendered for the other City services. Payments for sewer and other City services are due at the Grantsville City Offices prior to the time that the next months service billing is prepared by the City. A 1 ½ percent late fee shall be added to all delinquent accounts at the time the next months service billing is prepared by the City. A separate late fee shall be assessed against each residential units. In the event that the sewer, water or garbage charges, late fees, interest charges and a $25.00 fee to cover the expenses of restoring water service shall be paid in full to the city. In the event, a deposit has been made securing the payment of charges for City service. Said deposit may be forfeited to the City in the amount delinquent and due the City. The City Recorder may waive late fees if he or she determines that there is good cause for the waiver of said charges.
Sections 22-1-16 Sewer connections performed by city
The City Water and Sewer Superintendent, at any time may require that the City perform the work and supply the materials for any requested connection to the Citys sewer system. When the City has determined to perform the work for the sewer connection, the applicant shall pay the City the full costs of the work prior to any work being performed by the City. The costs of said connection should be determined by the City council of its designee. The Superintendent of Sewers shall determine the extend of the work to be performed by the City under this section and any remaining work necessary to provide sewer service shall be performed by the applicant. If the City performs all of the work necessary for a sewer connection in a City street or right of way, no bond shall be required by the applicant. The construction costs for the sewer connection as provided for in this section are in addition to the permit, connection or inspection fees required in Section 22-1-13.
Section 22-1-17 Responsibility for determination of depth of sewer
The owner of any property or authorized agent, who applies to the City for a sewer connection permit, shall prior to the commencement of any work and prior to obtaining a sewer connection permit, determine the depth of the main sewer line that the proposed connection is to be made to. The depth along with the elevations of all contemplated fixtures shall be supplied to the City at the time of the application for a sewer connection permit. The City will then determine the grade for the lateral and the owner will be required to make such changes to the depths of the fixtures proposed on the property to provide the elevations required by the City. No permit shall be issued for, not shall any connection be made with the sewer line where the fixtures on the property owner and his authorized agent shall be responsible for any and all damage or claims that may result from their failure to comply with the above procedures.
Section 22-1-18 for applications
Each person owning, occupying or having an interest in any structure in Grantsville City, the property line of which is within 300 feet of the sewer line shall connect to the sewer system upon an application in the form hereinafter set our Grantsville City application for sewer connection
I hereby apply to the municipality of Grantsville City, Tooele County, Utah (The "City) from permission to connect my premises at within the Grantsville City Wastewater System and hereby agree as follows:
(b) Location of the service, whether on my premises or at some point near my premises, may be decided solely by the City.
(c) The connection so made by Grantsville City shall remain the property of the Municipality at all times and the Municipality shall have access thereto at all times.
Dated this_________day of_____, 20____.
___________________________. Applicant
Section 22-1-19 Sewer use fees sewer use charge system.
Attached to this Chapter as an addendum is a document entitled "Grantsville City User Change System", Addendum "A." Addendum "A" is incorporated by reference and made a part of the Chapter and part of the Ordinances of Grantsville City and its title shall be known and is may be referred to as Addendum "A," "Calculation of User Fees- Sewer Use Charge System" or merely, "Addendum A" in any document, pleading, or proceeding pertaining to the sewer or wastewater system of Grantsville City. References to Addendum "A" shall also be made when there is ambiguous declarations or statements in this or any ordinance of Grantsville City, Utah and any resolutions or proceeding affecting the Grantsville City sewer and wastewater system. The rates for connecting to and use on any other basis may be fixed and amended by Resolution or Ordinance. Until otherwise provided by Resolution or an amending Ordinance, the rates shall be as follows:
The Governing Body will, to promote equity in distribution of operation and maintenance costs, and for no other purpose, establish rates based entirely upon metered winter usage, effluent strength by or solely upon the basis as defined herein above or upon an equitable combination of any of those so that the costs of operation and maintenance reflected in rates will be equitably distributed among those based upon their usage of and benefit received from the System.
All costs and expenses incidental to the installation and connection of the building sewer shall be borne by the owner(s). The owner(s) shall indemnify the City from any loss or damage that may directly or indirectly by occasioned by the installation of the building sewer.
Section 22-1-20 Annual review of costs and revisions
The City shall review the total annual cost of operation and maintenance, long-term debt service relating to the wastewater treatment works, as well as each users wastewater contribution percentage not less often than every year, and will revise the user charge system as necessary to assure equity of the system established herein and to assure that sufficient funds are obtained from the Citys user charge system to : (a) adequately operate and maintain the wastewater treatment works; and (b) cover said debt service. The City will apply excessive revenues collected from a class of users to the costs of operation and maintenance attributable to that class for the next year, and adjust this rate accordingly. The addendum attached hereto and entitled "Grantsville City User Change System" shall be used for calculating rated, fees, and charges for connection, use and access to the system. The addendum is adopted and made a part of this Chapter.
Section 22-1-21 Notification
Each user will be notified , at least annually, in conjunction with a regular bill, of the rate and that portion of the user charges, which are attributable to the wastewater treatment services (operation and maintenance) and for debt service.
Section 22-1-22 Sewer construction standards
Section 22-1-23 Use of public sewers
No person shall discharge or cause the discharge of any unpolluted waters such as storm water, surface water, groundwater, roof runoff, subsurface drainage, or cooling water to any sewer, except storm water runoff from limited areas, which storm water may be polluted at times, may be discharged to the sanitary sewer by permission of the city and the State Department of Environmental Quality. Storm water other than exempted in this Section and all other unpolluted drainage shall be discharged to such sewers as are specifically designated as combined sewers or storm sewers, or to natural outlet approved by the city and the Utah State Department of Environmental Quality. Unpolluted industrial cooling water or process waters shall also be discharged, to a strom sewer, combined sewer, or natural outlet.
Section 22-1-24 Prohibited discharge
No person shall discharge or cause to be discharged any of the following described water or wastes to any public sewer: (a) any gasoline, benzene, naphtha, fuel oil, or other flammable or explosive liquid, solid or gas; (b) any waters containing toxic or poisonous solids, liquids, or other wastes, to contaminate or interrupt any sewage treatment process, constitute a hazard in or have an adverse effect on the waters receiving any discharge from the works; (c) any waters or wastes having a pH lower than 5.5 or having any other corrosive property capable of causing damage or hazard to structures, equipment, and personnel of the wastewater works; and (d) solid or viscous substances in quantities or of such size capable of causing obstruction to the flow in sewers, or other interference mud, straw, shavings, metal, glass, rags, feathers, tar, plastic, wood, underground, garbage, whole blood, paunch manure, hair and flesh, entrails, paper dishes, cups, milk containers, etc., either whole or ground by garbage grinders.
Section 22-1-25 Liability for damage to system
Each user which discharges any toxic pollutants which causes damage to the System or to the Grantsville Treatment works shall be liable to the City for such damage and for all expenses incurred by the City in repairing those facilities.
Section 22-1-26 Regulated discharges
The following described substances, materials, waters, or wastes shall be limited in discharges to the municipal system to concentrations or quantities which will not harm either the sewers, the sludge of any municipal system, the wastewater treatment process or equipment, will not have an adverse effect on the receiving stream, or will not otherwise endanger lives, public property or constitute a nuisance, the City may set limitations more severe than the limitations established in the regulations below if such more severe limitations are necessary to meet the above objectives. In setting these requirements the City will give consideration to such factors as the quantity of subject waste in relation to flows and velocities in the sewers, materials of construction of the sewers, the wastewater treatment process employed, capacity of the sewers, capacity of the wastewater treatment plant, and other pertinent factors. The limitations or restrictions on materials or characteristics of waste or wastewater discharged to the sanitary sewer which shall not be violated without approval of the City are as follows:
Section 22-1-27 Discharges considered public nuisances, remedies.
If any water or wastes are discharged, or are proposed to be discharged to the public sewers, which waters contained the substances or possess the characteristics enumerated in Section 22-1-26, and which are determined by the City to have a deleterious effect upon the wastewater facilities, process, equipment, or receiving waters, or which otherwise create a hazard to life or constitute a public nuisance, the City may:
Section 22-1-28 Testing standards.
All measurements, tests, and analysis of the characteristics of waters and wastes to which reference is made in this Chapter shall be determined in accordance with the latest edition of "Standard Methods for the Examination of Water and Wastewater", published by the American Public Health Association. Sampling methods, location, times, duration, and frequencies are to be determined on an individual basis subject to approval by the City.
Section 22-1-29 Agreements for industrial waste.
No statement contained in this article shall be construed as preventing any special agreement or arrangement between the City and any industrial concern whereby an industrial waste of unusual strength or character may be accepted by the City for treatment.
Section 22-1-30 Damage to sewer system.
No persons shall maliciously, willfully, or negligently break, damage, destroy, uncover, deface, or tamper with any structure, appurtenances or equipment which is a part of the wastewater facilities. Any person violating this provision shall be subject to immediate arrest under charge of disorderly conduct.
Section 22-1-31 Inspections.
Duly authorized employees of the City bearing proper credentials and identification shall be permitted to enter al properties for the purpose of inspection, observation, measurement, sampling, and testing pertinent to discharge to the wastewater collection system in accordance with the provisions of this Chapter.
Section 22-1-32 Industrial process.
Duly authorized City employees are authorized to obtain information concerning industrial processes which have a direct bearing on the king and source of discharge to the wastewater collection system. Industrial users may withhold information when they have established that the revelation of said information to the public might result in an advantage to competitors.
Section 22-1-33 Grease traps.
Grease, oil and sand interceptors shall be provided when liquid wastes containing floatable grease in excessive amounts as specified in Regulated Discharge Section 22-1-26©, or any flammable wastes, sand or other harmful ingredients are introduced into public sewers; except that such interceptors shall not be required for private living quarters of dwelling units. All interceptors shall be of a type and capacity approved by the Utah State Plumbing Code, and shall be located as to the readily and easily accessible for cleaning and inspection. In the maintaining of these interceptors, the owner (s) shall be responsible for the proper removal and disposal by appropriate means of the captivated materials and shall maintain records of the dates and means of disposal which are subject to review by the City. Any removal and hauling of the collected materials not performed by owner(s) personnel must be performed by currently licensed waste disposal firms.
Section 22-1-34 Maintenance or pretreatment facilities.
Where pretreatment or flow-equalization facilities are provided or required for any water or wastes, they shall be maintained continuously in satisfactory and effective operation by the owner (s) at its expense.
Section 22-1-35 Industrial waste treatment.
When determined necessary by the city the owner(s) of any property serviced by a building sewer carrying industrial wastes shall install a suitable structure together with such necessary meters and other appurtenances in the building sewer to facilitate observation, sampling, and measurement of the wastes. Such structures, when required, shall be accessibly and safely located and shall be structured in accordance with plans approve by the City. The structure shall be installed by the owner at his expense, and shall be maintained by his so as to be safe and accessible at all times.
Section 22-1-36 Wastewater user dute to provide information.
The City may require any user of sewer services to provide information needed to determine compliance with this Chapter. These requirements include:
The City in its discretion may also collect samples to provide properties referred to herein, duly, authorized employees of the City shall observe all safety rules applicable to the premises established by the company, and the company shall be held harmless of injury or property damage asserted against the company growing out of the gauging and sampling operation, except as such may be caused by negligence or failure of the company to maintain safe conditions.
Section 22-1-37 Liability for city inspections
While performing the necessary work on private properties referred to herein, duly, authorized employees of the City shall observe all safety rules applicable to the premises established by the company, and the company shall be held harmless of injury or death to the City employees, and the City Shall indemnify the company against loss or damage to its property by City employees and against liability claims and demands for personal injury or property damage asserted against the company growing out of the gauging and sampling operation, except as such may be caused by negligence or failure of the company to maintain safe conditions.
Section 22-1-38 Inspections
Duly authorized employees of the City bearing proper credentials and identification shall be permitted to enter all private properties through which the City holds a duly negotiated easement for the purposes of, but not limited to, inspection, observation, measurement, sampling, repair and maintenance of any portion of the wastewater facilities lying within said easement. All entry and subsequent work, of any, on said easement, shall be done in full accordance with the terms of the duly negotiated easement pertaining to the private property involved.
Section 22-1-39 Dispute resolution
The Governing Body shall act upon all issues or differences between the City and sewer users on matters concerning interpretation and execution of the provisions of this Chapter.
Section 22-1-40 Notice of violation
Any person found to be violating any provision of this Chapter shall be provided by the City with written notice stating the nature of the violation and providing a reasonable time limit for the satisfactory correction thereof. The offender shall, within the period of time states in such notice, permanently cease all violations.
Section 22-1-41 Extension of sewer lines recovery rights. (repealed 3-22-2000 see Land Use Mangement Cody Chapter 22)
Grantsville City
Calculations of User Fees
The user charge system (UCS) is the method of assessing fees to the users of the sewer system. The UCS is based on a residential equivalent, i.e. the flow or quality (B.O.D or S.S.) of sewage equivalent to "normal" household sewage.
Note that the bolded numbers are given information. All other numbers are calculated.
Residential Users, RU 1,359
Commercial Users, CU 115
Industrial Users, IU 3
Average daily flow per residence, (Q), gal/day 267
Equivalent Residential Unit*,
ERU=30 days/months x Q, (gal/mo) 8,000
*Note: An Equivalent Residential Unit, ERU, is the quantity of wastewater generated by an average residence.
The third column, ERUs, equivalent residential units, Equates the flow from a given establishment to the flows from a "normal" residence.
| USER CLASSIFICATION | USAGE (gal/mo) |
ERU"S (eq) |
| Church | 8,000 |
1.0 |
| Stake Maintenance | 53,000 |
6.6 |
| Elementary School | 162,000 |
20.3 |
| Middle School | 50,000 |
6.3 |
| High School | 194,000 |
24.3 |
| Multiple Units | 8,000 |
1.0/units |
| Beauty Shops | 8,000 |
1.0 |
| Commercial | 8,000 |
1.0 |
| Motels | 8,000 |
1.0 |
| Light Industrial | 51,000 |
6.4 |
| Light Industrial | 152,000 |
19.0 |
| Light Industrial | 412,000 |
51.5 |
| School (Park) | 12,000 |
1.5 |
| Trailer Courts | 8,000 |
1.0/unit |
*ERU = USAGE/RU
20.3 = 162,000/8,000
The first column is a classification of each type of user connected to the sewer system. The second column is an inventory of each type of connection on the system. The third column is identical to the third column of Section C. the fourth column gives the total equivalent residential units for each type of connection. The fifth column gives the percent of the total equivalent residential units for each type of connection.
USER CLASSIFICATION |
CONNS (conn) |
ERU/CONN (eq/conn) |
ERUs (eq) |
PERCENT (%) |
| Residences * | 1359 |
1.0 |
1,359.0 |
66.2 |
| Churches | 4 |
1.0 |
4.0 |
0.2 |
| Stake Maintenance | 1 |
6.6 |
6.6 |
0.3 |
| Elementary School | 2 |
20.3 |
40.6 |
2.0 |
| Middle School | 1 |
6.3 |
6.3 |
0.3 |
| High School | 2 |
24.3 |
48.6 |
2.4 |
| Multiple Units | 45(225) |
1.0/units |
225.0 |
11.0 |
| Beauty Shops | 6 |
1.0 |
6.0 |
0.3 |
| Commercial | 41 |
1.0 |
41.0 |
2.0 |
| Motels | 1(2) |
1.0/units |
2.0 |
0.1 |
| Light Industrial | 1 |
6.4 |
6.4 |
0.3 |
| Light Industrial | 1 |
19.0 |
19.0 |
0.9 |
| Light Industrial | 1 |
51.5 |
51.5 |
2.5 |
| School (Park) | 2 |
1.5 |
3.0 |
0.1 |
| Trailer Courts | 10(233) |
1.0/units |
233.0 |
11.4 |
| TOTAL | 1,477 |
This section presents the budget for the operation and maintenance of the wastewater system.
| Labor | $ 91,000 |
| Materials | $ 12,000 |
| Utilities | $ 35,300 |
| Services | $ 42,000 |
| Repairs | $ 33,000 |
| Collections | $ 20,000 |
| Capital Recovery Fund (CRF) | $ 23,300 |
| Total, annual | $256,600 |
| Total, monthly, C om | $ 21,383 |
This section identifies the amount that must be applied to loan service.
| Existing debt | $ 27,223 |
| New debt | $ 164,000 |
| TOTAL, annual | $ 191,223 |
| TOTAL monthly, C L | $ 15,935 |
| Per year | $ 447,823 |
| Per year | $ 37,318 |
| Per year | $ 20,000* |
The cost of the wastewater system per ERU was calculated as follows:
| C eru = (C om + C L ) /ERUs |
| *$20,000 = ($17,250 + $15,935)/ 1658.9 |
| **$18.20 = (21,383 + 15,935) / 2,052 |
* User charge rate established by ordinances in 1194**Recalculated user charge rate, 1999
The following is the rate assessed to each type of user. Note that the total rate is approximately equal to the Total Cost of Wastewater System as presented in Section G.
USER CLASSIFICATION |
MONTHLY COST, CUMULATIVE |
MONTHLY COST, PER USER |
| Residences | $21,180 |
$20.00 |
| Churches | $80 |
$25.00 |
| Stake maintenance | $240 |
$240.00 |
| Elementary School | $840 |
$100.00 |
| Middle School | $100 |
$310.00 |
| High School | $310 |
$20.00 |
| Multiple Units | $5,310 |
$32.00 |
| Beauty Shops | $120 |
$32.00 |
| Commercial | $768 |
$20.00 |
| Motels | $40 |
$60.00 |
| Light Industrial | $60 |
$120.00 |
| Light Industrial | $120 |
$400.00 |
| Light Industrial | $400 |
$20.00 |
| Trailer Courts | $3,600 |
|
| TOTAL | $33,168 |
Cost = (C eru) x Conns
$21,180 = ($20.00 x $1,059)
Surcharge rates
The surcharge rates should be used for any non-residential user whose flow exceeds 8000 gallons per month, B.O.D. exceeds 196 mg/1 per month, or whose suspended soils (S.S.) are determined by sampling the discharge of the user to the collection system.
| CONSTITUTENT | PERCENT (P) |
| Flow | 52.0 |
| B.O.D. | 32.0 |
| Suspended Soils (S.S.) | 16.0 |
| TOTAL | 100.0 |
This section presents the "normal" characteristics of an equivalent residential unit.
| CONSTITUENT | FLOW(gal/m o) | CONC (mg/l) | LOAD (lbs/mo) |
| Flow, (Q) | 8000 |
-------------- |
------------------- |
| B.O.D. | -------------- |
196 |
20.43 |
| Suspended Soil, (S.S.) | ----------------- |
264 |
27.52 |
Load (lbs/mo) = Conc (mg/l) x Q (gal/mo) x 8.34 x 1.0 x 10 to the negative 6
20.43 = 196 x 8,000 x 8.34 x 1.0 x 10 to the negative 6
This is from Section H of the Calculation of User Fees.
This section gives the total cost of handling a unit quantity, i.e. 1000 gallons of flow, on pound of B.O.D. and one pound of S.S.
| CONSTITUENT | ($/1000 GAL) |
($/LB) |
| Flow, (Q)* | 0.832 |
----------------- |
| B.O.D. ** | ------------------------ |
0.313 |
| Suspended Solids (S.S)** | -------------------------- |
0.116 |
*Cu(flow) = (Ceru x P)/ (Q/1000)
$0.832 = ($20.00 x .52) / (8,000/1,000)
**Cu(B.O.D. or S.S.) = (C eru x P) / Load
$0.313 = ($20.00 x .32) / 20.43
$0.116 = ($20.00 x .16) / 27.52
TABLE 1: SURCHARGE RATES FOR FLOW, (Q)
FLOW (GALLONS) |
COST ($) |
|
FROM |
TO |
|
1 |
1000 |
0.416 |
1001 |
2000 |
1.248 |
2001 |
3000 |
2.080 |
3001 |
4000 |
2.912 |
4001 |
5000 |
3.744 |
5001 |
6000 |
4.576 |
6001 |
7000 |
5.408 |
7001 |
8000 |
6.240 |
8001 |
9000 |
7.072 |
9001 |
10000 |
7.904 |
10001 |
11000 |
8.736 |
11001 |
12000 |
9.568 |
12001 |
13000 |
10.400 |
13001 |
14000 |
11.232 |
14001 |
15000 |
12.064 |
15001 |
16000 |
12.896 |
16001 |
17000 |
13.728 |
17001 |
18000 |
14.560 |
18001 |
19000 |
15.392 |
19001 |
20000 |
16.224 |
20001 |
21000 |
17.056 |
21001 |
22000 |
17.888 |
22001 |
23000 |
18.720 |
23001 |
24000 |
19.552 |
24001 |
25000 |
20.834 |
General Equation: Cost = Qavg x Cu(flow)/1000
Qavg is the average of the above flow increment, i.e. (1001 + 2000)/2 = 1500
TABLE 2: SURCHARGE RATES FOR B.O.D
CONCENTRATION OF B.O.D. (mg/l) |
COST ($) |
|
FROM |
TO |
|
1 |
100 |
0.132 |
101 |
200 |
0.393 |
201 |
300 |
0.654 |
301 |
400 |
0.915 |
401 |
500 |
1.176 |
501 |
600 |
1.437 |
601 |
700 |
1.698 |
701 |
800 |
1.959 |
801 |
900 |
2.220 |
901 |
1000 |
2.481 |
1001 |
1100 |
2.742 |
1101 |
1200 |
3.003 |
1201 |
1300 |
3.264 |
1301 |
1400 |
3.525 |
1401 |
1500 |
3.786 |
1501 |
1600 |
4.047 |
1601 |
1700 |
4.308 |
1701 |
1800 |
4.570 |
1801 |
1900 |
4.831 |
1901 |
2000 |
5.092 |
General Equation: Cost = .001 x Cavg x Cu(BOD) x 8.34
Cavg is the average of the above concentration increment,
i.e. (201 + 300)/2=250
TABLE 3: SURCHARGE RATES FOR S.S.
CONCENTRATION OF S.S. (mg/l) |
Cost ($) |
|
FROM |
TO |
|
1 |
100 |
0.049 |
101 |
200 |
0.146 |
201 |
300 |
0.242 |
301 |
400 |
0.339 |
401 |
500 |
0.436 |
501 |
600 |
0.533 |
601 |
700 |
0.629 |
701 |
800 |
0.726 |
801 |
900 |
0.823 |
901 |
1000 |
0.920 |
1001 |
1100 |
1.016 |
1101 |
1200 |
1.113 |
1201 |
1300 |
1.210 |
1301 |
1400 |
1.307 |
1401 |
1500 |
1.403 |
1501 |
1600 |
1.500 |
1601 |
1700 |
1.597 |
1701 |
1800 |
1.694 |
1801 |
1900 |
1.790 |
1901 |
2000 |
1.887 |
General equation: Cost = .001 x Cavg x Cu (S.S.) x 8.34
Cavg is the average of the above concentration increment,
i.e. (201=300)/2 =250
Surcharge can be determined by using either Section D, Cost of Each
Constituent Per Unit, as shown in Section H of the User Charge Fees or using
the Tables in Sections E, F, and G of the Surcharge rates as shown in Section
I.
Assume an industry discharges wastewater with the following characteristics:
Flow: 20,000 gal/mo
B.O.D.: 500 mg/l
S.S.: 700 mg/l
FLOW: To find the cost for flow, use the cost per thousand gallons in Section D.
20,000 (gal/mo) x $0.832/1,000 gal = 16.64
B.O.D.: To find the cost for B.O.D., multiply the pounds of B.O.D. by the cost of B.O.D. per pound in section D.
20,000 (gal/mo)/1,000,000 x 500 (mg/l) x 8.34 x $0.313 (/lb) = $26.10
S.S.: To find the cost for S.S., multiply the pounds of S.S. by the cost of S.S. per pound in Section D
20,000 (gal/mo)/10,000,000 x 700 (mg/l) x 8.34 x $0.116 (/lb) = $13.56
TOTAL BILLING:
Flow: $16.64
B.O.D.: $26.10
S.S.: $13.54
TOTAL: $56.28
Example for determining surcharge using Rate Tables for flow, B.O.D., and S.S.
Assume an industry discharges wastewater with the following characteristics:
Flow: 20,000 gal/mo
B.O.D.: 500 mg/l
S.S.: 700 mg/l
Flow: To find the costs for flow look up the flow in Table 1 Section E. From 19,001 to 20,000 $16.22
B.O.D.: To find the cost of B.O.D. look up the B.O.D. in Table 2, Section F. From 401 to 500 $1.176
Multiply the cost per 1,000 gallons by the number of gallons divided by 1,000.
$1.176 x (20,000/1,000) = $23.52
S.S.: To find the cost of S.S. look up the S.S. in Table 3, Section G. From 601 to 700 $0.629
Multiply the cost per 1,000 gallons by the number of gallons divided by 1,000.
Total Billing:
Flow: $16.22
B.O.D.: $23.52
S.S.: $12.58
TOTAL: $52.32
Reconciliation of Surcharges
The Citys monthly wastewater O&M revenue can be calculated by reconciling the surcharges.
Monthly flow from Grantsville City ERUs x Q = Monthly Flow
1,658 x 8,000 = 20.736.250
Revenue based on surcharge of flows
CONSTITUENT |
CONC (mg/l) |
SURCHARGE ($/1000 gal) |
X FLOW (1000 gal) |
= REVENUE ($) |
| Flow* | ---------------- |
0.832 |
20,736 |
$17,525 |
| B.O.D.** | 196 |
0.313 |
20,736 |
$6,490 |
| S.S.** | 264 |
0.116 |
20,736 |
$2,405 |
| TOTAL | $26,147 |
*The surcharge used for flow is the average of the cost of 0-1000 and 1001-2000.
**The surcharges used for B.O.D. and S.S. are the average of the cost of 101-200 and 201-300, respectively.
Updated 11/04