Laserfiche WebLink
Sub consultant work Under Task 2 and 3 <br /> Staheli Trenchiess Scope of Work <br /> Sub consultant Staheli Trenchless will play a major role in the design of this project. Their <br /> scope of work ineludes reviewing the Preliminary Design Report and providing tunneling means <br /> and methodology based on the Preliminary Design Report and geotechnical information <br /> gathered during the pre-design phase. Staheli Trenchless will also provide tunneling related <br /> plans and specifications used for the construction documents. <br /> Geotechnical Scope of Work <br /> The Geatechnical Engineer Geotechnical Consultants Ina (GTC) will investigate the hydraulic <br /> conductivity of the soils above and across the tunneling zone at both ends of the proposed <br /> alignment (no data can be collected from under the traveled way of US101). Scope elements <br /> include: <br /> 1. Review available geotechnical and geologic information for the project site and vicinity <br /> and assess hydraulic conductivity (permeability) ranges for #he soil strata at the tunnel <br /> elevation, based on available geotechnical information (boring logs done by others at the <br /> jacking and receiving shafts). <br /> 2. Address constructability considerations and provide an opinion on the anticipated risks <br /> associated with the tunneling activity, based on geotechnical considerations. <br /> 3. Participate in team meetings, discussions, and conference calls as required to support <br /> the design team. <br /> Surveying Scope <br /> During the pre-design phase, Consultant's surveyor will perform the following tasks: <br /> 1. Collect horizontal location and vertical elevations of pipelines 24-inches in diameter or <br /> larger in the project area to be potholed by others. Elevations of other potholed utilities <br /> will be determined from data collected by potholing stafF in the field. <br /> 2. Update utility location and elevation information in proposed project area on base map <br /> provided by the City. <br /> 3. Collect horizontal and elevation information for locafions of center and extents of <br /> proposed new concrete vaults. <br /> 4. Horizontal data to be provided as coordinate farmat indicating northings and eastings of <br /> each reference point in state planer coordinate system. <br /> 5. Elevations will be tied to existing City Bench Mark network. <br /> 6. Results to be supplied in standard AutoCAD format. <br /> The drawing submitted under Task 2 are intended to identify plan layout for the proposed <br /> Walnut Street Interceptor crossing of Highway 101, and will include property lines, utilities, and <br /> locations of special connections. A specification table of contents will be provided at the pre- <br /> design stage. Plans will be provided in both .pdf format, and a specification outline will be <br /> submitted in MS Word. In addition, the submittal will contain the Risk Register; engineer's <br /> REV: 12-05-13 VR <br /> Page 13 of 18 <br /> ATTY/AG R.2413.240!Ken n ed yJ e n ks_237900 <br />