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4 <br /> Scope of Services,Water Main Replacement`o" Page 2 <br /> as necessary, for development of recommendations. Remove and dispose all soil <br /> cuttings from the site. City will assist in finding disposal site for non-contaminated <br /> cuttings. <br /> c. Perform laboratory tests on representative samples of the soils, including tests for <br /> moisture content, density, and particle size distribution. <br /> d. Evaluate pertinent physical and engineering characteristics of the soils based on the <br /> results of the field exploration, laboratory testing and experience. . <br /> 4. Provide Geotechnical Design Recommendations <br /> a. Describe site conditions including detailed subsurface soil conditions encountered <br /> based on results of Tasks 1 and 3 above. A geologic description of the area will be <br /> provided based on published information and geotech's experience in the area. <br /> b. Provide recommendations for earthwork and site preparation including suitability of <br /> on-site soils for reuse in trench backfill, placement and compaction of trench backfill, <br /> and mitigation of unsuitable soil conditions. Include an evaluation of the effects of <br /> weather and/or construction equipment on site soils. <br /> c. Perform engineering analyses and provide conclusions and recommendations for <br /> conventional trenching techniques including the following: <br /> • Geotechnical parameters for trench shoring design including lateral pressures, <br /> and partial shoring considerations; <br /> • Excavation and temporary slope considerations; . <br /> • Pipe support including bedding and backfilling; and <br /> • Construction dewatering considerations including depth to groundwater <br /> observed during drilling and estimated permeability coefficients based on <br /> laboratory sieve analyses. <br /> • Provide recommendations for erosion control during construction. <br /> 5. Geotechnical Communications, Design Report and Meetings <br /> a. Provide a summary of subsurface conditions encountered as information becomes <br /> available. <br /> b. Prepare a written report presenting conclusions and recommendations along with <br /> supporting boring logs, laboratory data, and other appropriate figures. <br /> c. Coordinate boring activities with City's survey consultant to allow consultant time to <br /> field locate borings and ground elevations and order utility locates. <br /> 6. Project Milestones <br /> a. Geotech needs to coordinate field work with City's survey consultant's field work. City <br /> will provide contact information on or before the NTP is issued. <br /> NTP January 31, 2014 <br /> Draft Report Due March 3, 2014 <br /> Geotech Final Report Due March 24, 2014 <br /> 57 <br />