A-2002-068 - Laserfiche WebLink

Home Browse Search

AGREEMENT 1-2354 Exhibit 'A PE3. Geotechnical Investigations The purpose of this task is to determine the general soil conditions along the alignmerit 'of the CenterLine project, at station and parking lots, at the site of the CMF, at traction power substation sites not at the above locations, and at locations where aerial stntctures are contemplated. CONSULTANT will initially evaluate existing geotechnical information gathered in the Detailed Conceptual Engineering, Study phase and available through the CONSULTANT's or other sources to recommend a program for subsurface investigation at the site of the CMF and where aerial sections are contemplated. The CONSULTANT will prepare a detailed summary of required geotechnical work for field testing, soil boring, and laboratory testing of these locations, and then coordinate the geotechnical engineering work. The CONSULTANT's geotechnical engineers shall coordinate and monitor the subsurface investigation program, direct field, tests and log all borings. The primary purpose of this work will be to determine if there are' .any geotechnical and/or hazardous material concerns which, a) may preclude using those locations f(,r the purposes intended, b) require clean-up or unusual site preparation work, and/or c) must be incorporated into the subsequent design of the stntctures and buildings. As the alignment is refined, station sites defined, and traction power substations located, a further program of test borings and laboratory testing will be prepared by the CONSULTANT, in consultation with The AUTHORITY, as the CONSULTANT deems warranted. In both phases of site investigation, monitoring wells (including standpipe piezometers) will be installed in selected borings as needed to allow monitoring of groundwater conditions. CONSULTANT will prepare two Geotechnical Reports, one for the CMF and expected aerial portions of the project, another covering the second phase of the work as the alignment is refined. Each Geotechnical Report will include boring logs, field and laboratory test results, ground water observations, subsurface and geological conditions, and any necessary interpretations of the results. particular attention will be paid to any soils problems which may have been encountered. Based on the information, design parameters for any structures, buildings, and other facilities related to The CenterLine project will be recommended in the Reports. The CONSULTANT shall also prepare guideline specifications for any expected earthwork. The locations of the test borings, their plan and profiles and other relevant data shall be transferred to appropriate mapping to be included in subsequent constntction contracts, The Geotechnical Reports will also recommend a work plan for the Final Engineering phase that is based on the findings of the geotechnical investigations performed under this scope. The recommended work plan shall include additional field explorations, field testing, laboratory testing, and engineering analyses. Deliverables: The end products for the geotechnical investigations work will be as follows: . Draft and Final Geotechnical Reports: the first report for the CMF and aerial sections, and aslightly later report for station sites, traction power substations and line segments. 15 ...-' --, ø