Each new user connecting to the town's wastewater treatment works shall be responsible for installing and connecting their own building sewer to the public sewer at the connection point provided by the town in accordance with the specifications of the town. A public sewer may only be tapped by an employee or contractor of the town. The size, slope, alignment, materials of construction of a building sewer, and the methods to be used in excavating, placing of the pipe, jointing, testing, and backfilling the trench, shall all conform to the materials and procedures set forth below. The appropriate specifications of the ASTM and WPCF Manual of Practice No. 9, and all Indiana statutes and regulations pertaining to such construction matters shall apply to matters not specified below.
(A) Gravity piping specifications.
(1) All house sewers shall be 4 inch schedule 40 or SDR 35 PVC pipe conforming to ASTM D-3034. Joints shall be bell and spigot with elastomeric rubber gasket as recommended and supplied by the pipe manufacturer and in accordance with ASTM D-3212.
(2) The point of commencement for laying of sewer pipe shall be from the grinder pump station. Lay the pipe with the bell of the pipe pointing upgrade. Lay each pipe on an even firm bed as specified so that no uneven strain will come to any part of the pipe. Particular care shall be exercised to prevent the pipes from bearing on the sockets.
(3) This section shall apply to new construction only. If the installation of the gravity line to the grinder pump is for a dual service of two homes, the second new service placed shall place a “Y” connection fitting within 10 feet of the grinder pump station to allow the second home access to the utility. The “Y” shall be of bell and spigot design. The connection to the existing lateral of a home shall be made with a fernco coupling.
(4) Completely shove home all pipe to the assembly mark.
(5) The width of the trench at and below the top of the sanitary sewer shall be only as wide as necessary for proper installation and backfilling.
(6) Bell holes shall be excavated for bell and spigot pipe so that the entire barrel of the pipe rests on the bedding.
(7) Whenever pipe trenches are excavated below the designed bedding bottom, the contractor shall fill the over-excavation with mechanically compacted No. 8 (¼ inch to ¾ inch) crushed stone.
(8) All rock, boulders and stones four inches in diameter and larger encountered in trenches shall be removed. Boulders or rocks are not to be used for trench backfill.
(9) The following materials shall be used to backfill the trenches: Course sands and gravel with maximum particle size of 1½ inch, including variously graded sand and gravel containing small percentages of fines, generally granular and noncohesive, either wet or dry.
(10) A minimum four-inch diameter pipe cleanout shall be installed within three feet of the outside building wall. A plug specified by the pipe manufacturer shall be used to ensure 100% water-tightness.
(11) Minimum slope of the pipe shall be inch per foot; normal slope shall be ¼ inch per foot.
(12) Building lateral minimum size shall be four inches.
(13) Minimum cover over the pipe shall be four feet.
(B) Pressure piping specifications.
(1) High Density Polyethylene Pipe (HDPE). HDPE pipe shall be made from virgin resins exhibiting a cell classification of 3454440 as defined in ASTM D 3350. The pipe supplied under this specification shall have a nominal IPS (Iron Pipe Size) OD unless otherwise indicated. The Dimension Ratio (DR) of all pipe shall be DR 11 unless otherwise noted.
(2) HDPE pipe shall be joined by the butt fusion process into continuous lengths or shall be supplied to the project site in a roll. If field joints are require the joining method shall be the heat fusion method and shall be performed in strict accordance with the pipe manufacturer's recommendations.
(3) Properly executed electrofusion fittings may be used. Extrusion welding or hot gas welding of HDPE pipe shall not be used for pressure pipe applications. Mechanical joint adaptors, flanges, unions, grooved couplers, transition fittings, and some mechanical couplings may be used to mechanically connect HDPE pipe. Contractor shall refer to the manufacturer's recommendations in regards to mechanical connections.
(4) HDPE fittings shall be made in accordance with ASTM D 3261. The fittings shall be fully pressure rated and provide a working pressure equal to that of the pipe with an included 2:1 safety factor. The fittings shall be manufactured from the same resin type and cell classification as the pipe itself. The fittings shall be homogeneous throughout and free from cracks, holes, foreign inclusions, voids, or other injurious defects.
(5) The installation of the piping shall be as outlined under the gravity piping specification.
(6) A tracer cable shall be installed for all nonferrous forcemain that is installed. The cable shall be brought to the surface and attached to a sign noting “Sanitary Forcemain” at all permanent structures or every 1000 lf of running pipe, including services. On directionally drilled forcemain, three tracer cables shall be pulled back with the pipe and tested for conductivity. The tracer cable requirement shall apply to service lines to small grinder pump stations, but no signage will be required for the service lines to the small grinder pump stations. However, the tracer cable shall be accessible at the grinder pump station covers.
(C) Grinder pump stations. The grinder pumps that will be allowed are as manufactured by Barnes Crane, Barnes Pressure Sewer Systems, 1485 Lexington Ave., Mansfield, Ohio 44907-2674, (419) 774-1524. No other pumping system will be allowed to be installed. The Clerk-Treasurer and the Public Works Superintendent shall maintain the ordering information for the following required grinder pump equipment:
Barnes Part No. | Description |
102776 | Grinder Pump, model SGPC 1024L, 15' M CVP |
107226 | ULTRACAV Station, 24X90SSRS with 36" ballast support flange and float tree level control |
102627A | Simplex control panel, NEMA 4X fiberglass with alarm light and horn, silence switch, control circuit breaker and redundant start |
(D) Electrical service.
(1) The electrical service for the grinder pump shall be independent of the power supply for the lot and shall have the control panel mounted on a 6x6 10-foot long pressure treated pole. The control panel shall be connected to the grinder pump station with the wiring that is provided by the manufacturer of the grinder pump unit. The length of the wire that will be required shall be identified by the lot owner prior to ordering of the grinder station. The wire shall be placed in a 1-inch diameter PVC conduit. The control panel shall be connected to a 60 amp, 240 volt, 1 phase, 3 wire, with ground lugs, Nema 3R fused disconnect switch, fused at 20A-LPN, that shall be placed on a REMC power pole with a weather head extending up the pole. A 1-inch by 10-foot long copperweld ground rod shall be installed at the base of the disconnect switch location, with a #8 copper ground wire connected to the ground bus/neutral of the main disconnect switch. The ground wire shall be placed in a 1-inch PVC conduit to below grade. The wiring shall be three #8 in 1-inch schedule 40 PVC conduit to the weather head with four-foot leads. The REMC shall make the final power connection. The wire between the control panel and the disconnect switch shall be three #12 in a 1-inch PVC conduit up to 220 feet from control panel to power pole or three #10 in a 1-inch PVC conduit up to 400 feet from control panel to power pole. All penetrations into the control panel and the fused disconnect switch will be sealed for vapor and moisture penetration.
(2) Exterior buried cable and conduit shall be identified by a continuous brightly colored plastic tape approximately 6" wide and 4 mils thick. Tape shall be printed to most accurately describe type of service. Allen “Detect/Tape”, Reef “Terra Tape”, Thomas & Betts “Protect-A-Line,” or approved equal. During back-filling/top-soiling of each exterior underground electrical cable, a continuous underground-type plastic line marker shall be installed, located directly over the buried line at 6" to 8" below finished grade. Where multiple small lines are buried in a common trench and do not exceed an overall width of 16", a single line marker shall be installed. A line marker shall be installed for every buried cable, regardless of whether direct buried or protected in conduit.
(E) Drains. All drains, except storm drains, shall be connected to the sanitary sewer from the house.
(F) Inspections. All sewer connections shall be inspected by an official of the town before final connection to the main sewer. Such inspections shall be performed by the personnel specified within this chapter.
(G) Easement. If the property to be served requires the installation of a grinder pump, upon completion, inspection, and approval of the installation of the grinder pump and related facilities, the town shall accept dedication of an easement from the property owner and assume ownership and maintenance responsibility for the grinder pump station and the sewer line running from the grinder pump to the public sewer, and such dedicated wastewater facilities shall become public sewers oft he town. The town shall not be responsible for the grinder pump and related facilities unless the property owner has provided a recordable easement in a form acceptable by the town.
(H) Septic system. Upon connection to the public sewer, if a septic system was previously used on the property, the property owner shall comply with the Indiana Department of Environment Management requirements that all septic tanks be pumped out by an Indiana State Department of Health licensed waste hauler. If the septic tank is left in the ground, it shall be filled with pea gravel, sand, or other similar inert material, which may require the crushing or removal of the lid. The abandonment of the existing septic tank system shall be completed within 90 days of the approval of the connection to the municipal system.
(I) Adjustments to technical requirements. The inspecting official for the town shall have the latitude to make minor adjustments in the technical requirements of the ordinance for cases of existing conditions that are beyond the control of the property owner. The minimum level of construction practices will be the standard set by the BOCA pumping code, current edition. The inspecting official shall have no latitude regarding the technical requirements for connections to new structures. In cases where the minimum standards are not going to be met, the permit shall identify the reasons and the construction variances that will occur due to existing condition issues. All changes in the above mentioned technical requirements shall be approved by the town inspecting official prior to commencement of construction.
(Ord. 248, passed 10-28-98; Am. Ord. 275, passed 2-15-00; Am. Ord. 283, passed 5-22-00; Am. Ord. 287, passed 11-13-00; Am. Ord. 301, passed 2-20-01) Penalty, see § 50.99