Laserfiche WebLink
<br />VanDe~ele <br />Engineering <br />Incorporated <br /> <br />Mr. Steve Gillette <br />January 27,2006 <br />Page 3 of5 <br /> <br />a. Cross sections of the intersecting streets at approximately 500- <br />feet on center for various distances; <br />b. Manhole rim elevations, pipe diameters and alignments, and <br />flowline elevations of existing gravity sanitary sewers; <br />c. Pipe diameters and invert elevations of existing lift stations' <br />influent sewers; <br />d. Natural gas or other product pipelines that cross either Sens <br />Road or the intersecting streets; and, <br />e. Above ground utility company facilities such as telephone <br />company pedestals, gas valves, or fiber optic cable risers. <br /> <br />3) Review the 0301 PER's findings and recommendations including service <br />areas, waste load factors, line capacity, location, and constructability. <br /> <br />4) Review the BBI PER and assess the feasibility and cost to extend the <br />proposed gravity trunk sanitary sewer through their project. Participate in <br />two coordination meetings to accomplish this task. <br /> <br />5) Review the topographic survey data from Items 1 and 2 with respect to <br />existing sanitary sewers and lift stations, surface elevations, roadside ditch <br />and cross drainage structure flowline elevations, rights-of-way, easements, <br />and crossing utilities, pipelines and other subsurface conditions. <br /> <br />6) Refer to City of La Porte's current zoning map and develop waste load <br />factors for each service area. Calculate required pipe sizes and slopes <br />based on resulting flow estimates. Include appropriate peaking and <br />infiltration/inflow factors. <br /> <br />7) Determine the extents to which the proposed gravity trunk and main <br />sanitary sewers can be extended throughout the service areas. Provide pipe <br />sizes, slopes and preliminary flowline elevations at key nodes. Identify lift <br />stations that can be removed from service. <br /> <br />8) Participate in three meetings with the Harris County Public Infrastructure <br />Department's Engineering Division project manager. The first two will <br />address impacts, scheduling, feasibility, constructability and coordination <br />with the County and BBI; the third to secure design concurrence. <br />