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<br />oj <br /> <br />. <br /> <br />. <br /> <br />..;0'... <br /> <br />a. <br /> <br />Contrqls and equipment shall be approved by the City. Pumps shall be <br />mlinufactured by Hydromatic, Flygt or ABS, or approved equal. Pump <br />,controls shall be manufactured by E.G. Controls or Consolidated <br />Electric, or approved equal. <br /> <br />4. Wet Wells <br /> <br />a. . Provide adequate clearance between pumps so as to easily facilitate <br />retrieval of a pump. ' <br />b. The top of the wet well shall be a minimum of 1 foot above the <br />nearest base flood elevation. <br />c. Wet well working volUme shall be sized to allow for the <br />recommended minimum pump cycle time of 10 minutes for each <br />pump. <br /> <br />5. Lift station site - Minimum size of20 feet by 20 feet. , <br />6. The lift station's control panel shall sit a minimum of I foot above the nearest <br />base flood elevation. <br />7." 'Pumps shall be sized to operate at optimum efficiency. Minimum acceptable <br />efficiency at the operating point shall be 60%. <br />8: Emergency operations should be considered. Provide fittings and a blind flange <br />that will be readily accessible for emergency bypass pump. <br /> <br />4.03' ,QUALITY ASSURANCE <br /> <br />A. <br /> <br />Prepare calculations and construction drawings under the supervision of a Professional ' <br />Engineer trained and licensed under the disciplines required by the drawing. The final <br />construction drawings must be sealed, signed, and dated by the Professional Erigineer. <br />responsible for the development of the drawing. If more 'than one Professional Engineer <br />was responsibie for the development of the design/construction drawings, t~en the <br />a.l?propriate Professional E~gineer should seal the drawings he is responsible for. <br /> <br />j, <br /> <br />'4.04 UNSEWERED BUILDING SITES AND SEPTIC TANKS <br /> <br />A. There shall be no new septic tanks installed within the City of La Porte city limits. <br />B. It ~s the responsibility of the land owner to file a Citizen Developer Request (COR) with <br />, the City to ensUre that a site has sanitary sewer service 'available. ' ".,..' <br />C. ' For unsewered building sites, the owner/developer has the option of executing a utility <br />extension agreement with the city if the nearest sanitary sewer service is more than 400 <br />feet away. The owner/developer must .pay for all materials and affect installation and , <br />testing before the city ~ill accept the sewer for maintenance. - <br /> <br />4.05 DESIGN ANALYSIS <br /> <br />A. Calculations of design flows for overall development project. <br />B. Calculations for any treatment plant required for the development. <br />C. Calculations for the effect of the 100-year storm outfall from any proposed treatment <br />plant. <br /> <br />4.06 DRAWINGS <br /> <br />A. Drawings shall include layout sheets with contours, plan-and-profile sheets, and details <br />sheets for. special items and trea~ent plants. <br /> <br />Sanitary Sewe~ Design Criteria Page 10 of 10 <br />