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<br />. e <br /> <br />e. PVC saddle-type connectors with gasket and stainless steel straps <br />shall be installed with the stub oriented 45 degrees from the <br />spring line. Tees may be oriented the in the same manner. <br />f. The service lead shall be placed so as to minimize the use of bends as <br />site conditions permit. <br />g. For existing residential lots (which are not served in accordance with <br />these guidelines) that need a service lead, if the distance to the <br />nearest existing sanitary sewer is less than 60 feet, the service lead <br />may be a 4 inch service tap if only one lot or parcel is to be served. <br />Commercial and industrial lots and parcels shall have a minimum 6 <br />inch service tap under the same conditions. <br />h. The location where the service lead or its wye meets the property line <br />shall be shown on the plans and as-builts, and marked in the field <br />with a riser out of the ground. There shall be a riser placed where the <br />service lead meets the property line so that the service lead stub-out <br />can be recovered at the time that the connection to the service lead is <br />made. All service leads shall be extended to the property line and be <br />turned up (elbowed) to rise up above ground level a minimum of 2 <br />feet. The end of the riser shall be sealed with a glued cap. <br />i. All service leads shall be installed at the time of the construction of <br />the sanitary sewer in new residential subdivisions. <br /> <br />F. General Requirements <br /> <br />1. A licensed plumber shall be responsible for connecting private residential <br />sanitary sewer service to the public sanitary sewer system, to wyes and/or tees or <br />to lateral sewers as indicated on the plans. Said licensed plumber shall be <br />responsible for a properly installed and watertight private residential service <br />connection. <br />2. Commercial service connections to the public sanitary sewer shall be made by <br />the City of La Porte. <br />3. Materials and construction shall conform to the City of La Porte Standard <br />Specifications and Standard Details where applicable. <br />4. All constructed sanitary sewer lines shall be air tested for leaks and a mandrel <br />pulled for structural defects. All sanitary sewer testing shall comply with or <br />exceed the procedures and qualifications listed in Texas Administrative Code, <br />Chapter 317, Section 317.2(a)(4)(B). A post construction video survey shall be <br />performed and video tapes provided to the City of La Porte before being <br />accepted by the city for maintenance. <br />5. All public sanitary sewers and service leads shall have bedding and backfill that <br />shall comply with or exceed City of La Porte Standard Specifications and <br />Details. Those sanitary sewers that are bore and jacked, m icrotunne led, <br />augured, or encased in a steel pipe may require special bedding and backfill. <br /> <br />a. Portland cement, Type I, ASTM C 150. <br />b. Clean, durable sand, with less than 0.5% clay lumps, ASTM C142; <br />with less than 0.5% lightweight pieces, ASTM C123; with organic <br />impurities, ASTM C40, not showing a color darker than standard color <br />and a plasticity index of less than 6 when tested in accordance with <br />ASTM 0423 and ASTM D424. <br />c. Compact to 95% Standard Proctor Density (ASTM D2922-78 and <br />ASTM D3017-78) in lifts of 8 inches thick. Actual testing may be <br />required as deemed necessary by the City of La Porte. <br />d. The cement-sand mixture shall consist of at least I ~ sacks of cement <br />per cubic yard of sand. The cement-sand mixture shall have a <br />minimum unconfined compressive strength of 100 psi in 48 hours when <br /> <br />Sanitary Sewer Design Criteria Page 5 of 11 <br />