(a) No unauthorized person shall uncover, make any connection with or opening into, use, alter or disturb any public sewer or appurtenance thereof without first:
(1) Notifying the Wastewater Superintendent.
(2) Purchasing a building permit and street opening permit if necessary.
(3) Paying all fees required in securing inspection.
(4) Furnishing (when required) all plans, specifications or other information considered pertinent in the judgment of the Superintendent on the connection to the sewer system.
(b) There shall be three classes of tapping permits: domestic, commercial and industrial. Each class shall be determined by composition, volume and type of occupancy of the building. Class of permit shall be determined by the Board of Public Utilities and the Superintendent.
(c) All costs and expenses incident to the installation and connection of the building sewer shall be borne by the owner. The owner shall indemnify the City from any loss or damage that may directly or indirectly be occasioned by the installation of the building sewer.
(d) A separate and independent building sewer shall be provided for every building. A building that is sub-divided into separate units and the units are independently owned shall have an independent sewer laterals for each unit. The Board of Public Utilities and the Superintendent may make exception to this rule when it is the decision of the Board of Public Utilities and the Superintendent that it would be advantageous to the City and the public health to have more than one building or units on a single lateral.
(e) Old building sewers may be used in connection with new buildings when:
(1) The sewer is examined and tested by the Superintendent and found to be acceptable to the City.
(2) An inspection fee is required for the use of the old building sewer.
(f) All material used in the sewer system shall be approved by the Superintendent. This includes pipe, joints, backfill and laying procedure. All procedures and materials shall meet the standards set forth by the Ohio Environmental Protection Agency. The City accepts no responsibility for materials or workmanship. Any sewer connection which connects below the basement floor shall have an approved backwater device, with alarm, construction.
(g) All building sewers will include a cleanout the same size as the lateral to the City sewer.
(h) All building sewers shall be inspected before being covered. Measurements, type of material and grade shall be furnished to the City at the time of inspection by the installer. Air testing of laterals may be required by the Superintendent when there is evidence that leakage occurred. The owner or installer shall notify the Superintendent when tap and line are to be installed.
(i) No sewer line shall be laid within ten feet of a potable water line, except when the line is installed according to standard designs in the manual known as the EPA Ten States Standards Manual.
(j) The connection of the building sewer shall be made at a Y branch when one is provided. When no Y branch is provided, a neat hole will be cut into the City sewer and the tap shall be made with a tapping saddle approved by the City. The location of the tap in the pipe shall be determined by the City. All connections, joint and pipe, shall be gastight and watertight. Taps to manholes shall be approved by the Superintendent.
(k) All excavations for building sewer installations shall be adequately guarded with barricades and lights so as to protect the public from hazard. Streets, sidewalks, parkways and other public areas disturbed in the course of the work shall be restored in a manner satisfactory to the City inspector.
(l) New extensions to sewer systems shall be approved by OEPA, the City Engineer, the Board of Public Utilities and the Superintendent. This includes plans, materials, location, size of pipe, etc.
(1) The City reserves the right to change pipe size to plan for future extensions.
(2) Inspection shall be provided by the City. All costs incurred in inspection shall be paid by the developer and shall be included in the extension cost.
(3) Upon completion and acceptance by the City, all easements, pipe, manholes, etc. become the property of the City. This does not include building service lines, regardless of size, from main to property served,
(4) No extensions shall be termed private without the consent of the City. (Ord. 171-77. Passed 1-5-78.)
(5) Existing Private (as opposed to public) sanitary sewers shall continue to be owner by the private owners. Such sewers shall be maintained by their owners, unless the City agrees to provide cleaning service. A fee will be accessed to cover the cost of such cleaning operation.
(m) Material. Unless otherwise indicated on the plans, sewers and services shall be supplied with material conforming to the latest specifications for the following:
(1) Polyvinyl chloride pipe and fittings, ASTM D 3034, SDR 35; joints to conform to ASTM D 3212. All PVC pipe shall have granular bedding to be placed from 4 inches below the pipe to 12 inches above the pipe. All bedding and granular backfill material shall have 100 percent passing of a 3/4” sieve. (ODOT Nos. 7,78,8,89). ODOT NO. 57 and/or item 310, grading A may be used as an alternate material if approved by the Board of Public Utilities and the Wastewater Superintendent.
(2) Manholes shall be precast concrete conforming to ASTM C-4787 and shall have gasketed joints conforming ASTM C-443. All manholes require steps and flow channels. The flow channel through manholes should be made to conform in shape, slope, and smoothness to that of the sewers. A bench shall be provided on each side of the manhole channel. The bench should be located one pipe diameter above the invert and slope no less than 14” per foot to the channel.
(3) Joints between manholes and pipe shall be neoprene flexible boot connections conforming to ASTM C-923; to be Press Seal PSX for PVC pipe and A-Lok for concrete pipe, or equivalent. Precast concrete sanitary manholes shall have internal seals installed from the manhole frame to below the top of the precast manhole section. Joints between precast sections shall be watertight O-ring (ASTM C-443) joints with approved bitumastic sealer applied around all outside joints extending from the outer wall to the edge of the seal bench. Pipe connections to manholes shall be applied around all outside joints. Pipe connections to manholes shall be sealed with approved resilient connectors and a Portland cement and sand mix grout as directed by the Board of Public Utilities Wastewater Superintendent.
(4) Sanitary manhole frames and lids for concrete manholes shall be Neenah R-1762 or approved equal with solid lid and “Sanitary'' cast in. Manhole tops shall be built or subsequently adjusted to meet surface grades established for the development.
A. Where required, precast concrete adjusting collars may be used for a maximum of 12 inches. Cost of this work to be included in the price of the bid for the various sewer items.
B. Pressure gasketed manhole covers shall by supplied wherever manhole tops are in paved areas or are otherwise determined to be subject to surface water inflow by the Board of Public Utilities Wastewater Superintendent. Manhole tops in normal yard setting shall be 3 to 5 inches above the finished ground grade. Bedding for manholes shall be a minimum of 3 inches of compacted sand (or) 6 inches of crushed limestone ODOT NO. 57, placed on undisturbed earth.
C. For detailed drawing of standard precast manhole see City of Columbus Standard Drawing AA-S102; for outside drop manhole see City of Columbus Standard Drawing AA-S110.
(5) During the construction of the sanitary sewers, where existing sewers are encountered and are interfered with, sanitary flows shall be maintained within the existing sewers. Temporary piping or pumping shall be provided between existing sanitary manholes in order to maintain existing sanitary flows.
(6) Testing. Air testing shall be provided by the Contractor on all sanitary sewers. It shall be the Contractor's responsibility to provide all necessary equipment and perform the pressure test on all sanitary sewers to the satisfaction of the City of London.
(7) The Contractor's specific attention is directed to the requirements of either the infiltration, exfiltration or air test as specified by the City of London, Ohio. Leakage through the joints of the sewer shall not exceed the following allowed limits: If exfiltration test is used; lines shall not leak in excess of 100 gallons (for PVC or concrete) per inch, per mile of tributary sewer diameter per 24 hours per mile of length or the computed equivalent for shortened lengths and shorter periods of time. All sanitary sewers and services shall be tested. Mandrel deflection testing shall be performed as required by the OEPA. If an air test is used, the sewer shall hold 15 pounds of air pressure for 3 minutes.
(8) All gravity sewers shall pass a deflection test, 30 days after the line has been constructed.
(9) Storm water connections. Floor drains, roof drains, foundation drains, downspout drains, storm sewers, ground water drains and all other clean water connections to the sanitary sewer are prohibited.
(10) Homes with sewers under the basement floor, shall have an approved backwater device installed in the basement floor, with an alarm device.
(11) Trenches. All trenches crossing under existing or proposed paved areas and drives shall be backfilled with Type A material (compacted Granular material), from the top of the bedding material to the pavement subgrade or to a plane six inches below the top of the ground, between the limits of the right-of-way (property lines). Unless otherwise shown, trenches not under existing or proposed paved area and outside of road right-of-way areas shall be backfilled with native material approved by the Board of Public Utilities Wastewater Superintendent. Said material is to be placed and compacted in 24 inch lifts maximum. Any settlement of trenches during the warrantee period shall be repaired by the contractor at no additional cost.
(12) All gravity sanitary sewer services shall be 8 inch diameter PVC pipe backfilled with compacted granular material per the limits as described above. All service connections shall be 4 or 6 inch dia. PVC-SDR-35 pipe size determined by the design engineer or wastewater Superintendent. All sanitary lateral connections shall terminate at the foundation and be the same size and material for the entire run and shall include a clean-out the same size as the lateral itself at the terminal end at the foundation.
A. Sanitary sewer laterals are the responsibility of the property owner from the home to the tap on the main line.
B. Only approved tapping fittings may be used for the connection to the main line. All fittings must have prior approval from the wastewater Superintendent.
C. Each service lateral shall have a cleanout located at the foundation wall. All cleanouts must have a approved capping device installed at all times to prevent odor emission and to prevent infiltration.
(13) The Contractor shall place cutoff trench dams of native clay or impervious soil across and along the trench at 150-foot intervals to retard and resist the movement of groundwater through the trench. There shall be at least one trench dam between adjacent manholes regardless of spacing. The trench dams shall be carefully compacted and shall be 6 feet in length, as measured along the sewer center line and shall be benched into the undisturbed trench sides from the subgrade or top of cradle, to within 5 feet of the existing surface, or if in rock or hardpan, shall extend to the top thereof whichever is greater. Where pipe cover is less than 5 feet the dam shall extend to within 1-foot of the existing surface. The trench dam installations shall have as a minimum 3 feet of compacted material above the crown of the pipe.
(14) Permits. The Contractor shall have in his possession and/or obtain all necessary permits, including the OEPA Permit to Install prior to commencing work on this project.
(15) Wye poles. The Contractor shall furnish and place at the ends of wyes, services, and risers, wye pole made of approved 2” x 2” lumber. Wye poles shall extend a minimum of 4 feet above the proposed finished ground grade, with this portion of the wye pole painted fluorescent orange. The cost of these poles shall be included in the price bid for the various sewer items.
(16) The minimum horizontal separation between water and sanitary sewer lines shall be ten feet. The minimum vertical separation between water and sanitary sewer lines shall be eighteen inches.
(17) When the sanitary sewer crosses under a proposed storm sewer, or waterline the trench shall be backfilled to the bottom of the proposed utility with compacted granular material, ten lineal feet centered on the storm sewer or water line. Cost to be included in the price bid for the various sewer items.
(18) All City departments will require a written 24-hour notice before work within the City can be started. No Saturday or Sunday work will be permitted unless previously approved by the Board of Public Utilities Wastewater Superintendent.
(19) The Board of Public Utilities Wastewater Superintendent shall be notified a minimum of 48 hours prior to any construction activity.
(20) All work must be visually inspected by a Board of Public Utilities Wastewater Superintendent, or his representative, before work is covered or work will have to uncovered for inspection and additional fee for inspection will be charged to the owner or contractor.
(21) “As-built” plans showing all wye pole locations, manhole locations, and length and grade of pipe between manhole centers are required by the Board of Public Utilities for final approval of Sanitary Sewer.
(Ord. 140-76. Passed 8-5-76; Ord. 178-06. Passed 1-4-07; Ord. 182-08. Passed 11-6-08.)