[Adopted 4-9-1990 by Ord. No. 90-4]
A.
It is the purpose of this article to protect public health and safety by abating and preventing pollution through the regulation and control of the disposal of sewage and the quantity and quality of wastes admitted to be discharged into the wastewater collection and treatment system of the City of Royal Oak, the Oakland County Department of Public Works, and the City of Detroit.
B.
It is the further purpose of this article to enable the City of Royal Oak and the governmental authorities with which it has contracted to provide a public sewage disposal system for the properties within the City of Royal Oak, the County of Oakland, and the City of Detroit, to comply with the requirements of applicable state and federal laws, including the Federal Water Pollution Control Act of 1972, as amended; the State of Michigan Act No. 245 of 1929, as amended; the Federal District Court Consent Judgment and Settlement Agreement, United States District Court, Eastern District of Michigan, Southern Division, C.A. No. 77-1100; and the applicable rules and regulations pertaining to said Acts; and the requirements of applicable National Pollutant Discharge Elimination System Permits. Further, this article is intended to enable the City of Royal Oak to comply with State of Michigan Act No. 185 of Public Acts of 1957, as amended,[1] and/or State of Michigan Act No. 342 of Public Acts of 1939, as amended.[2]
C.
This article shall govern the design, construction and use of wastewater facilities under the jurisdiction of the County of Oakland, enumerating the permit requirements for tapping into county wastewater facilities, for altering existing county wastewater facilities, for pumping stations and for industrial connections to public sewers; and the authority of the county's inspectors or authorized agents in the County of Oakland, State of Michigan; and to provide a uniform policy for rates for wastewater disposal service.
By virtue of the obligations and authority placed upon the County of Oakland and the City of Detroit by the Federal Water Pollution Control Act; the Constitution of the State of Michigan; the State of Michigan Act No. 245 of the Public Acts of 1929, as amended; the Charter of the City of Royal Oak; National Pollutant Discharge Elimination System Permit for the City of Detroit Publicly Owned Treatment Works; the Federal District Court Consent Judgment pertaining to US EPA v. City of Detroit, et al, C.A. No. 77-1100, as amended; the Urban Cooperation Act of 1967, as amended; Public Act No. 35 of 1951, as amended[1]; and existing or future contracts between the City of Royal Oak, County of Oakland, the Oakland County Department of Public Works, the Oakland County Drain Commissioner, and the Board of Water Commissioners of the City of Detroit, or by virtue of common law usage of the system, this article shall apply to every property and property owner which is a source of sewage and/or which contributes or causes to be contributed pollutants or wastewater to the City of Royal Oak Sewage Disposal System, Evergreen-Farmington Sewage Disposal System and/or the Clinton-Oakland Sewage Disposal System and/or the Huron-Rouge Sewage Disposal System and/or the Southeastern Oakland County Sewage Disposal System and/or the City of Detroit Publicly Owned Treatment Works.
[1]
Editor's Note: See MCLA § 124.1 et seq.
When used in this article, the following terms shall have the meanings described in this section unless the context specifically indicates a different meaning:
The Federal Water Pollution Control Act, P.L. 92-500, also known as the "Clean Water Act," as amended, 33 U.S.C. § 1251 et seq.
The Michigan Department of Natural Resources or the Environmental Protection Agency.
Engineering drawings prepared after installations of wastewater facilities which shall show a statement by a registered engineer or surveyor certifying this to be "as-built plans" and shall include, but not be limited to, length of sewer, invert elevation, locations with respect to property lines, wye and riser locations and depths, sewer material and joints used, and mechanical, electrical, and structural details for pump stations, wastewater treatment facilities, and other appurtenances.
Refers to a corporate officer, if the industrial user is a corporation; a general partner or proprietor, if the industrial user is a partnership or proprietorship, respectively; or a duly authorized representative of the individual designated in either of the above, if such representative is responsible for the overall operation of the facilities from which the indirect discharge originates or is the identified corporation, partnership, or proprietorship representative for responding to discharge inquiries or actions.
The quantity of dissolved oxygen utilized in the biochemical oxidation of organic matter under standard laboratory procedure five days at 20° C. expressed in terms of weight and concentration [milligrams per liter (mg/l)] as measured by standard methods.
The Board of Water Commissioners of the City of Detroit.
That part of the lowest horizontal piping of a drainage system which receives discharge from soil, waste, and other drainage pipes inside the walls of the building and conveys it to the building's sewer (house sewer). The latter begins five feet outside the inner face of the building wall.
The extension from the building drain that connects the building in which the sanitary sewage originates to the public sewer or other place of disposal and conveys the sewage of but one building.
The National Categorical Pretreatment Standards or a pretreatment standard as promulgated under authority of the Act, 40 CFR 403.
A measure of the oxygen-consuming capacity of inorganic and organic matter present in water or wastewater. It is expressed as the amount of oxygen consumed from a chemical oxidant in a specified test. It does not differentiate between stable and unstable organic matter and thus does not necessarily correlate with biochemical oxygen demand. Also known as OC and DOC, oxygen consumed and dichromate oxygen consumed, respectively.
The difference between the amount of chlorine applied and the amount of free chlorine available at the end of the contact time, expressed in milligrams per liter.
The City in which this article is passed.
A sewer receiving both surface runoff and sewage.
BOD (biochemical oxygen demand), FOG (fats, oils or grease), phosphorus, suspended solids, and fecal coliform bacteria, plus other pollutants which do not exceed the Control Authority's interference or pass through limitations or the limitations of this article.
A series of grab samples of equal volume taken over a specified time period with no regard to the flow in the waste stream, which are combined into one sample.
The judgment issued by Federal District Court on September 14, 1977, US EPA v. City of Detroit, et al, C.A. No. 77-1100, as amended.
The Detroit Water and Sewerage Department (DWSD) which has been officially designated as such by the state under the provisions of 40 CFR 403.12 or authorized representatives or employees of the DWSD.
A suitable manhole, together with such necessary meters, including, where appropriate, adequate power source, and other appurtenances, to facilitate observation, sampling and measurement of wastewater to be constructed in accordance with plans approved by the county's engineering personnel.
The noncontact water discharged from any use such as air conditioning, cooling, or refrigeration to which the only pollutant added is heat.
The County of Oakland, State of Michigan, or its authorized representative, the Detroit Water and Sewerage Department.
The Oakland County Drain Commissioner or the Oakland County Department of Public Works.
The organic and inorganic substances, elements or compounds, listed in the register compiled by the Water Resources Commission of the Department of Natural Resources of the State of Michigan.
For purposes of computing, a period of time prescribed or allowed by this article, consecutive calendar days.
Charges levied to customers of the wastewater system which are used to pay principal, interest and administrative costs of retiring the debt incurred for construction of the wastewater system. The debt service charge is separate and distinct and may be in addition to the user charge specified below.
The discharge of treated or untreated wastewater directly into the waters of the State of Michigan.
The Director of the Detroit Department of Water and Sewerage or the Director's deputy.
A person who contributes, causes or permits wastewater to be discharged into the publicly owned treatment works from a place of domicile for one or more persons, including, but not limited to, single-family houses, apartment buildings, condominiums, townhouses and mobile homes. It shall also mean churches, schools and government buildings.
Any structure designed for year-round habitation, including, but not limited to, houses, mobile homes, apartment buildings, condominiums and townhouses.
The United States Environmental Protection Agency or, where appropriate, the term may also be used as a designation for the administrator or other authorized official of said federal agency.
Any hydrocarbons, fatty acids, soaps, fats, waxes, oils, and any other nonvolatile material of animal, vegetable, or mineral origin that is extractable by solvent in accordance with standard methods.
A grant made or to be made for the construction of wastewater collection, transportation, and/or treatment works provided under the Act, P.L. 92-500, as amended.
A composite sample taken with regard to the flow rate of the waste stream.
A pipe or conduit which is placed around the perimeter of a building foundation and which intentionally admits groundwater.
The animal and vegetable waste resulting from the handling, preparation, cooking and serving of foods. It is composed of putrescible organic matter and its natural moisture content.
PROPERLY SHREDDED GARBAGEThe waste from the preparation, cooking and dispensing of foods that has been shredded to such a degree that all particles will be carried freely under the flow conditions normally prevailing in public sewers, with no particle greater than 1/2 inch (1.27 centimeters) in any dimension.
The current edition of standard material and construction requirements of the County of Oakland.
A sample which is taken from a waste stream on a one-time basis without regard to the variations in flow rate, but which shall reasonably reflect the characteristics of the waste stream at the time of sampling.
Subsurface water occupying the saturation zone, from which wells and springs are fed.
Any waste from holding tanks such as vessels, chemical toilets, campers, trailers, septic tanks, and vacuum-pump tank trucks.
Any pollutant which is not a compatible pollutant.
The discharge or the introduction of pollutants from any nondomestic source, regulated under Section 307(b), (c), or (d) of the Act (33 U.S.C. § 1317), into the publicly owned treatment works.
A person who contributes, causes, or permits wastewater to be discharged into the publicly owned treatment works from a place of business, endeavor, arts, trade, or commerce, whether public or private, commercial or charitable. Domestic users are specifically excluded.
The discharge into the publicly owned treatment works of any liquid, solid, or gaseous waste or form of energy, or combination thereof, resulting from any processes of industry, manufacturing, business, trade, or research, including the development, recovery, or processing of natural resources.
Any waters entering the system from the ground, through such means as, but not limited to, defective pipes, pipe joints, connections or manhole walls. Infiltration does not include and is distinguished from inflow.
The total quantity of water from both infiltration and inflow.
Any waters entering the system through such sources as, but not limited to, building downspouts, footing or yard drains, cooling water discharges, seepage lines from springs and swampy areas, and storm drain cross connections.
A discharge by a user which, alone or in conjunction with discharges by other sources, inhibits or disrupts the publicly owned treatment works or its treatment processes or operations, or its sludge processes, use or disposal, and which causes a violation of any requirement of the publicly owned treatment works' NPDES permit (including an increase in the magnitude or duration of a violation) or the prevention of sewage sludge use or disposal by the publicly owned treatment works in accordance with the following statutory provisions and regulations or permits issued thereunder (or more stringent state or local regulations): Section 405 of the Clean Water Act, the Solid Waste Disposal Act (SWDA) [including Title II, more commonly referred to as the "Resource Conservation and Recovery Act (RCRA)," and including state regulations contained in any state sludge management plan prepared pursuant to Subtitle D of the SWDA], the Clean Air Act, the Toxic Substances Control Act, and the Marine Protection Research and Sanctuaries Act.
The measurements, tests, and analyses of the characteristics of waters and wastes in accordance with the methods contained in the latest edition at the time of any such measurement, test, or analysis of "Standard Methods for Examination of Water and Wastewater," a joint publication of the American Public Health Association, the American Waterworks Association, and the Water Pollution Control Federation or in accordance with any other method prescribed by the rules and regulations promulgated pursuant to federal or state law.
That portion of the sewer system located under the street or within the street right-of-way from the property line to the trunk line or interceptor and which collects sewage from a particular property for transfer to the trunk line or interceptor.
A prefix denoting jurisdiction by the City.
The chief administrative officer of the City, or his authorized representatives or agents.
Is permissive.
The City.
Any regulation containing pollutant discharge limits promulgated by the EPA in accordance with Section 307(b) and (c) of the Act (33 U.S.C. § 1317) which applies to a specific class or category of industrial users.
A permit issued to a publicly owned treatment works pursuant to Section 402 of the Act (33 U.S.C. § 1342).
Any outlet into a watercourse, pond, ditch, lake, or other body of surface or ground water.
Any building, structure, facility, or installation from which there is or may be a discharge of pollutants, the construction of which is commenced after the publication of the proposed National Categorical Pretreatment Standards under Section 307(c) of the Act, which will be applicable to such source if such standards are thereafter promulgated in accordance with that section.
A sewage or other wastewater effluent which shall be a compatible pollutant with BOD of 275 milligrams per liter or less, suspended solids of 350 milligrams per liter or less, total phosphorus of 12 milligrams per liter or less, and fats, oil, and greases of 100 milligrams per liter or less.
Any object of whatever nature which substantially impedes the flow of sewage from the point of origination to the trunk line or interceptor. This shall include, but not be limited to, objects, sewage, tree roots, rocks and debris of any type.
All work, materials, equipment, utilities and other effort required to operate and maintain the wastewater transportation and treatment system consistent with insuring adequate treatment of wastewater to produce an effluent in compliance with the NPDES permit and other applicable state and federal regulations, and includes the cost of replacement.
The owners of record of the freehold of the premises or lesser estate therein, a mortgagor or vendee in possession, assignee of rents, receiver, executor, trustee, lessee, or other person, firm or corporation in control of a building.
The discharge of pollutants through the publicly owned treatment works into navigable waters in quantities or concentrations which, alone or in conjunction with discharges from other sources, is a cause of violation of any requirement of the publicly owned treatment works' NPDES permit (including an increase in the magnitude or duration of a violation).
Any individual, partnership, copartnership, firm, company, corporation, association, joint-stock company, trust, estate, unit of government, school district or any other legal representative, agent or assigns, or any combination thereof. The masculine gender shall include the feminine; the singular shall include the plural where indicated by the context.
The negative reciprocal of the logarithm of the hydrogen concentration. The concentration is the weight of hydrogen-ions, in grams per liter of solution.
Any substance or energy added or introduced into the user's water source.
The human-made or human-induced degradation or impairment of the chemical, physical, biological or radiological integrity of water.
The reduction of the amount of pollutants, the removal of pollutants, or the alteration of the nature of pollutant properties in wastewater to a less harmful state prior to or in lieu of discharging or otherwise introducing such pollutants into the publicly owned treatment works. The reduction, removal or alteration may be attained by physical, chemical or biological processes, or process changes by other means, except as prohibited by federal, state or local law, rules and regulations.
Any substantive or procedural requirements related to pretreatment other than a national categorical pretreatment standard imposed on an industrial user.
A prefix denoting jurisdiction by a nongovernmental entity.
A prefix denoting jurisdiction by any governmental subdivision or agency.
A common sewer controlled by a governmental agency or public utility.
That portion of the publicly owned treatment works designed to provide treatment to wastewater, including recycling and reclamation of wastewater.
A treatment works as defined by Section 212 of the Act (33 U.S.C. § 1292), which is owned in this instance by the City of Detroit. This definition includes any sewers that convey wastewater to the POTW treatment plant. For the purposes of this article, "publicly owned treatment works" or "POTW" shall also include any sewers under the jurisdiction of the City and/or the County of Oakland.
The replacement in whole or in part of any equipment, appurtenances and accessories in the wastewater transportation or treatment systems to insure continuous treatment of wastewater in accordance with the NPDES permit and other applicable state and federal regulations.
A sewer which carries sewage and to which storm-, surface and ground waters are not intentionally admitted.
A prefix denoting a wastewater transmission facility or sewer which is intended to transport sanitary wastewater only.
Any area whose wastewater is received by the City or the County of Oakland for the transmission for treatment by the City of Detroit DWSD.
Spent water which may be a combination of the liquid and water-carried wastes from residences, commercial buildings, industrial plants, institutions, or other land uses, including drainage water and groundwater inadvertently present in said waste.
Any arrangement of devices and structures used for treating sewage.
A pipe or conduit that carries wastewater or drainage water. See the following definitions modifying sewer:
BUILDING SEWERIn plumbing, the extension from the building drain to the public sewer or other place of disposal. Also called "house connection."
COMBINED SEWERA sewer intending to receive both wastewater and storm- or surface or drainage water.
COMMON SEWERA sewer in which all owners of abutting properties have equal rights.
COUNTY SEWERA public sewer controlled by the county agency.
INTERCEPTING SEWERA sewer that received dry-weather flow from a number of transverse sewers of outlets in frequently additional predetermined quantities of stormwater (if from a combined system) and conducts such waters to a point for treatment of disposal.
LATERAL SEWERA sewer which is designed to receive a building sewer.
MUNICIPAL SEWERA public sewer exclusive of a county sewer or City of Detroit sewer.
PUBLIC SEWERA common sewer controlled by a governmental agency or public utility.
SANITARY SEWERA sewer that carries liquid and water-carried waste from residences, commercial buildings, industrial plants, and institutions, together with minor quantities of ground-, storm-, and surface waters and drainage water that are not admitted intentionally.
STORM SEWERA sewer that carries stormwater and surface water, street wash and other wash waters, or drainage, but excludes domestic wastewater and industrial wastewater. Also called a "storm drain."
TRUNK SEWER or TRUNK LINEA sewer which connects the lateral sewer to the intercepting sewer and to which building sewers may be connected.
The sum of the applicable user charge, surcharges and debt service charges.
Is mandatory.
Any industrial user of the POTW as defined herein who:
Has a discharge flow of 50,000 gallons or more per average workday, exclusive of stormwater and sanitary wastewater; or
Has discharges subject to the National Categorical Pretreatment Standards; or
Requires pretreatment to comply with the specific pollutant limitations of this article; or
Has, in its discharge, toxic pollutants as defined pursuant to Section 307 of the Act, or other applicable federal and state laws and regulations which are in concentrations and volumes that are subject to regulation under this article as determined by the Control Authorities; or
Is required to obtain a permit for the pretreatment, storage, or disposal of hazardous waste pursuant to regulations adopted by the state or adopted under the Federal Solid Waste Disposal Act, as amended, by the Federal Resource Conservation and Recovery Act and any amendments thereto and who may or does contribute or allow waste or wastewater into the POTW, including, but not limited to, leachate or runoff; or
Is found by the Control Authority to have significant impact, either singly or in combination with other contributing industries, on the POTW, the quality of sludge, the POTW's effluent quality, or air emissions generated by the POTW.
Any pollutant released in a discharge at a flow rate and/or concentration which will cause interference or pass through at the POTW as determined by the Control Authority.
Refers to a classification pursuant to the Standard Industrial Classification Manual issued by the Executive Office of the President, Office of Management and Budget, 1972, as amended.
The laboratory procedures set forth in the latest edition, at the time of analysis, of "Standard Methods for the Examination of Water and Wastewater" prepared and published jointly by the American Public Health Association, the American Water Works Association, and the Water Pollution Control Federation, or methods set forth in 40 CFR 136 "Guidelines for Establishing Test Procedures for Analysis of Pollutants." Where these two references are in disagreement on procedures for the analysis of a specific pollutant, the methods given in 40 CFR 136 shall be followed.
The State of Michigan.
The water running off from the surface of a drainage area during and immediately after a period of rain.
The Superintendent of the City Department of Public Works or his duly authorized representative or agent.
An additional charge which may be imposed to cover the cost of treatment of excess strength wastewater discharged by any customer.
The total suspended matter that floats on the surface of, or is suspended in, water, wastewater or other liquids, and which is removable by laboratory filtration or as measured by standard methods.
The equivalent to the total amount of potable water used by a municipality as recorded by a master water meter for sewered premises, and shall include, but not be limited to, fire protection water, gardening and lawn water.
Any pollutant or combination of pollutants designated as toxic in regulations promulgated by the Administrator of the United States Environmental Protection Agency under the provisions of Section 307(a) of the Clean Water Act, 33 U.S.C. § 1317, or included in the critical materials register promulgated by the Michigan Department of Natural Resources, or other federal or state laws, rules or regulations.
Industrial process water or cooling water which has not come into contact with any substance used in or incidental to industrial processing operations and to which no chemical or other substance has been added, and which is completely compatible with applicable stream standards, excepting thermal limitations.
An exceptional incident in which there is an unintentional or temporary noncompliance with limits imposed under this article or with National Categorical Pretreatment Standards because of factors beyond the reasonable control of the industrial user. An upset does not include noncompliance to the extent caused by operational error, improperly designed treatment facilities, inadequate treatment facilities, lack of preventative maintenance, or careless or improper operation.
Any person who contributes, causes or permits the discharge of wastewater into the publicly owned treatment works as defined herein.
A charge levied on users of a treatment works for the cost of operation and maintenance of sewerage works pursuant to Section 204(b) of P.L. 92-500 and includes the cost of replacement.
The liquid and water-carried industrial or domestic wastes of dwellings, commercial buildings, industrial facilities and institutions, whether treated or untreated, which are contributed to or permitted to enter the publicly owned treatment works. Wastewater may also contain infiltration and inflow waters and cooling water.
Permits issued by the Control Authority or its designated representative as set forth in Section 7 of this article.[1]
The structures, equipment and processes required to collect, carry away, and treat domestic and industrial waste, and dispose of the effluent.
A channel in which a flow of water occurs, either continuously or intermittently.
Refers to all streams, lakes, ponds, marshes, watercourses, waterways, wells, springs, reservoirs, aquifers, irrigation systems, drainage systems, and all other bodies or accumulations of water, surface or underground, natural or artificial, public or private, which are contained within, flow through, or border upon the state or any portion thereof.
[1]
Editor's Note: Original Section 7, General wastewater disposal regulations, was repealed 5-19-2003 by Ord. No. 2003-05.
The following abbreviations shall have the designated meanings:
Biochemical oxygen demand.
Code of Federal Regulations.
Chemical oxygen demand.
Clean Water Act.
Detroit Water and Sewerage Department.
Environmental Protection Agency.
Fats, oil or grease.
Liter.
Michigan Department of Natural Resources.
Milligrams.
Milligrams per liter.
National Pollutant Discharge Elimination System.
Operation and maintenance.
Phosphorus.
Publicly owned treatment works.
Resource Conservation and Recovery Act.
Standard Industrial Classification.
Standard Industrial Classification Manual.
Suspended soils.
Solid Waste Disposal Act, 42 U.S.C. § 6901 et seq.
Total suspended solid.
United States Code.[1]
[1]
Editor's Note: Original Section 5, General regulations of Oakland County Department of Public Works, County of Oakland, sewage disposal systems, which previously followed this section, was repealed 5-3-1999 by Ord. No. 99-10.
A.
This section sets forth the procedures and regulations governing the granting of permits to connect into the Twelve Towns relief drains directly and to all other county drains that are tributary directly or indirectly to the facilities under the jurisdiction of the Southeastern Oakland County Sewage Disposal System.
B.
General.
(1)
Each municipality is requested to furnish an up-to-date plan of its sewerage system. Plan should include the location, size and direction of flow in all existing sewers. Sewers should be identified as separated or combined. Pumping stations, flow regulation and diversion structure should be shown.
(2)
Plans for laterals shall be submitted in the name of the municipality by the municipal officials or a firm of consulting engineers officially authorized to do so. Generally, this authority will be vested in the City Engineer or a single firm of consulting engineers retained as the City Engineer. All plans submitted to this office shall bear the signature of the above designated official.
(3)
A letter requesting the approval of plans by the Oakland County Drain Commissioner's Office and the Water Quality Division of the Michigan Department of Natural Resources (formerly known as the "Michigan Health Department") shall be addressed to the Oakland County Drain Commissioner and be accompanied by a minimum of five sets of plans. Upon approval of the plans, the Drain Commissioner's Office will retain one set and forward the remaining sets to the Michigan Department of Natural Resources along with a letter requesting its approval. Copies of this letter will be sent to the applicant municipality and the consulting engineer. The Michigan Department of Natural Resources, upon its approval of the plans, will return at least three sets of approved plans bearing the construction permit number to the applicant municipality. The applicant municipality will keep one set, send one set to the Oakland County Drain Commissioner and send one set to the consulting engineer. In the event that the applicant municipality or consulting engineer requires an extra set of approved plans, additional sets shall be included with the initial request for approval.
(4)
Plan detail. Plans submitted to this office for review must meet the following requirements:
(a)
General location plan which shows the relationship to existing sewerage facilities, including outlet sewer interceptors, pumping stations, etc.
(b)
Detail plan and profile drawings along with criteria of hydraulic design (storm frequency, line capacity, line velocities, tributary areas, etc.).
(c)
Material and construction standards, regular and special.
C.
Regulations governing connections in combined sewer areas (including Twelve Towns relief drains and county combined drains tributary thereto).
(1)
A connection permit must be obtained prior to connection to a county drain from the Oakland County Drain Commissioner's Office, One Public Works Drive, Pontiac, Michigan 48054 (858-0958). A legal description of the property to be served by the connection is required.
(2)
The fee as determined by the Drain Commissioner for connection permits shall be $150 which is to cover the cost of the inspection of the tap.
(3)
The connection to the county drain will be made under the supervision of an inspector from the Drain Commissioner's office in accordance with approved plans of said connection.
(4)
A minimum of 24 hours' notice (excluding Saturday, Sunday, and holidays) must be given prior to tap to enable this office to arrange for inspection.
(5)
Requests for inspection shall be directed to the technician charged with the responsibility of permit issuance (858-0978).
(6)
All lines connected to county drains shall be clean (free from silt, dirt, debris, etc.).
(7)
Yard drains, catch basins, weep tile, perimeter drains or other structures used for the collection and conveyance of stormwater will be permitted to outlet into the county combined drains, provided said properties lie within said drainage district. Downspouts and eaves troughs shall not be directly connected to any City sewer or county combined drains that lie within the combined drainage district.
[Amended 5-3-1999 by Ord. No. 99-10]
(8)
The contractor, during the construction of a lateral, shall install a suitable bulkhead to prevent sand, silt, dirt or other debris from entering the county drain. Upon work completion and removal of any debris that may have collected, the contractor shall contact the Inspection Office for permission to remove the bulkhead.
(9)
A connection from any industrial plant or facility using chemical processes shall be provided with a readily available sampling point (manhole or equivalent).
D.
Regulations to prevent the discharge of stormwater and groundwater into the southeastern system from those areas lying outside the designated combined sewer area.
(1)
All sanitary sewer systems (lying in these areas of the SOCSDS district, designated as separated) to be connected directly or indirectly into the intercepting sewer or sewers of the SOCSDS prior to connection shall meet the following requirements: [NOTE: "System" defined as a lateral having two or more connections. A construction permit from the Michigan State Department of Natural Resources is required for a sewer system.]
(a)
A connection permit shall be obtained by the owner or contractor from the Oakland County Drain Commissioner's Office. Said connection permit shall show the location of the work, the extent of the work, information regarding the contractor, the owner and the engineer, the scheduled date of infiltration test and any other pertinent information as shall be determined necessary by the Oakland County Drain Commissioner. A fee shall be charged for said permit to cover the cost of inspection of the connection and system connected.
(b)
All sewer systems shall be subjected to infiltration, air, or exfiltration tests or a combination thereof in accordance with the following requirements prior to acceptance of the system by the Oakland County Drain Commissioner's Office.
[1]
Infiltration test. All sewers over twenty-four-inch diameter shall be subjected to infiltration tests. All sewers of twenty-four-inch diameter or smaller where the groundwater level above the top of the sewer is over seven feet shall be subjected to an infiltration test.
[2]
Maximum allowable infiltration shall not exceed 250 gallons per inch of diameter per mile of pipe per 24 hours for the overall project. Maximum allowable infiltration shall not exceed 500 gallons per inch of diameter per mile of pipe per 24 hours for any individual run between manholes.
[3]
Air test or exfiltration test. All sewers of twenty-four-inch diameter or less, where the groundwater level above the top of the sewer is seven feet or less, shall be subjected to air tests or exfiltration tests. For exfiltration tests, the internal water level shall be equal to the external water level plus seven feet as measured from the top of pipe. The allowable exfiltration rate shall be the same as that permitted from infiltration. The procedure for air testing of sewers shall be as follows:
[a]
The sewer line shall be tested in increments between manholes. The line shall be cleaned and plugged at each manhole. Such plugs shall be designed to hold against the test pressure and shall provide an airtight seal. One of the plugs shall have an orifice through which air can be introduced into the sewer. An air supply line shall be connected to the orifice. The air supply line shall be fitted with suitable control valves and a pressure gauge for continually measuring the air pressure in the sewer. The pressure gauge shall have a minimum diameter of 3 1/2 inches and a range of 0-10 PSIG. The gauge shall have minimum divisions of 0.10 PSIG and an accuracy of plus/minus 0.04 PSIG.
[b]
The sewer shall be pressurized to four PSIG greater than the greatest back pressure caused by groundwater over the top of the sewer pipe. At least two minutes shall be allowed for the air pressure to stabilize between 3.5 and four PSIG. If necessary, air shall be added to the sewer to maintain a pressure of 3.5 PSIG or greater.
[c]
After the stabilization period, the air supply control valve shall be closed so that no more air will enter the sewer. The sewer air pressure shall be noted and timing for the test begun. The test shall not begin if the air pressure is less than 3.5 PSIG, or such other pressure as is necessary to compensate for groundwater level.
[d]
The time required for the air pressure to decrease 1.0 PSIG during the test shall not be less than the time shown in the Oakland County Drain Commissioner's Air Test Tables.
[e]
Manholes on sewers to be subjected to air tests shall be equipped with a one-half-inch-diameter galvanized capped pipe nipple extending through the manhole, three inches into the manhole wall and at an elevation equal to the top of the sewer pipe. Prior to the air test, the groundwater elevation shall be determined by blowing air through the pipe nipple to clear it and then connecting a clear plastic tube to the pipe nipple. The tube shall be suspended vertically in the manhole and the groundwater elevation determined by observing the water level in the tube. The air test pressure shall be adjusted to compensate for the maximum groundwater level above the top of the sewer pipe to be tested. After all tests are performed and the sewer is ready for final acceptance, the pipe nipple shall be plugged in an acceptable manner,
(c)
If a sewer fails to pass any of the previously described tests, the contractor shall determine the location of the leaks, repair them and retest the sewer. The tests shall be repeated until satisfactory results are obtained.
(d)
All visible leaks and cracks shall be repaired regardless of test results.
(2)
Stormwater and groundwater control.
(a)
Yard drains, patio drains, catch basins, downspouts, weep tile, perimeter and footing drains or any other structure used for the collection and conveyance of stormwater and/or groundwater shall not be permitted to discharge into any sanitary sewer connected directly or indirectly to the county system, except as provided below.
(b)
Perimeter and footing drains installed after August 22, 2013, shall either be connected to an existing public combined or separate storm sewer, or shall discharge onto grade at least 15 feet from the nearest property line.
[Amended 8-12-2013 by Ord. No. 2013-13]
(c)
The crock to iron joint shall be sealed by approved flexible adaptor fittings such as those manufactured by Fernco Joint Sealer Company, or as approved by the Oakland County Drain Commissioner's Office. The iron pipe inside the building shall be plugged and leaded and remain plugged and watertight until such time as the plumbing is carried on to the first floor, the basement backfilled and the roof is on the building, thereby providing that no water from the excavated basement will enter the sanitary sewer.
(3)
Building sewers.
(a)
House connection sewer from lateral sewer in the street or easement five feet from house shall be:
[1]
Six-inch diameter extra strength vitrified sewer pipe, manufactured in accordance with current NCPI Designation ER 4-67 Standards, or equal, with Drain Commissioner approved premium joint; or
[2]
Six-inch diameter ABS plastic solid wall sewer pipe conforming to ASTM designation D-2751 SDR 35 or 23.5; or
[3]
Six-inch diameter PVC plastic solid wall sewer pipe conforming to ASTM designation ASTM D-3034 SDR 35 or ASTM D-2665 Schedule 40.
[4]
Other pipes and joints as may be approved by the Oakland County Drain Commissioner.
(b)
House connection sewers should be six-inch minimum diameter; however, four-inch pipe of comparable strength and joint material may be used if permitted by the local unit of government. All joints shall be tight and, when tested for infiltration, shall not exceed 500 US gallons per inch of diameter, per mile, per 24 hours.
(c)
The crock to iron joint shall be sealed by an approved bituminous filler, enclosed in concrete to provide a watertight seal. The iron pipe inside the building shall be plugged and leaded and remain plugged and watertight until such time as the plumbing is carried on to the first floor, thereby providing that no water from the excavated basement will enter the sanitary sewer.
(d)
The municipality shall issue tap permits for each structure that is connected into the SOCSDS and be responsible to see that the above specifications pertinent to materials and installations are followed.
(4)
The SOCSDS, through its agent, the Drain Commissioner, shall, at his option, be permitted to set up and operate flow metering equipment to gauge sanitary flow, either on a temporary or permanent basis, in any sanitary sewer lying within the said separated areas.
(5)
Plans and specifications covering the construction of all new sewers, both combined and sanitary (separate), lying within the SOCSDS service area shall be submitted to the office of the Oakland County Drain Commissioner for review and approval prior to construction.
(6)
The quality of domestic and industrial waste outletted into the SOCSDS facilities shall conform to the current City of Detroit Ordinance pertinent to domestic and industrial wastes. It is the contractual obligation of the municipality, reference Section 16 of contract with county, to use SOCSDS facilities to enforce these standards.
(7)
No requirements of the SOCSDS or permits issued hereunder by said system through its agent, the Oakland County Drain Commissioner, shall relieve the property owner of complying with all the rules and regulations of the local unit of government, wherein such property is located, where such are not in conflict with requirements of the SOCSDS.
(8)
All sewer construction shall comply with the general specifications of the Oakland County Drain Commissioner; copies of said specifications may be obtained from the office of the Drain Commissioner.[2]
[2]
Editor's Note: Original Section 7, General wastewater disposal regulations, which previously followed this section, was repealed 5-19-2003 by Ord. No. 2003-05.
Any person violating any of the provisions of this article shall, upon conviction thereof, be subject to a fine not exceeding $500 or imprisonment not to exceed 90 days in the Oakland County Jail, or both such fine and imprisonment, in the discretion of the court, plus costs of prosecution.
