AgdaPkt 2014-01-13 Interview, Closed and Regular

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7.1.F. - Page 15 • Review and evaluation of conflicts between proposed Walnut Street Interceptor and SBSA's proposed 48 -inch force main improvements in Maple Street, • Review and evaluation of potential conflict with access and parking for the women's correctional facility across from the Maple Street Pump Station, • Review of existing 'soils data and development of an opinion regarding the suitability of soils for specific tunneling methods,(1.e open shield pipe jacking vs. microtunneling), • Review and evaluation of available lining systems for the new Walnut Street Interceptor pipe that can reduce corrosion extend the useful life of a concrete pipe desired for the crossing, and • Production of a Project Risk Register, which identifies risks and possible avoidance or mitigating measures to be incorporated into the final design. Task 2 - 3 Design Approach Workshop Consultant will conduct a Design Approach Workshop with the City. This workshop will be facilitated by the Consultant's Project Manager and will include key team members from the geotechnical and tunneling subconsultants. The workshop will rely on the information generated in Task 2 -2 to establish the agenda. Outcomes of the workshop will involve confirmation of the design criteria, and agreement on the approach for design. The workshop is assumed to require three (3) hours, including travel. Task 2 Prepare a Pre Design Report Supplement Consultant will prepare a Pre Design Report Supplement based on deliverables generated in Tasks 2 -2 and 2 -3. The Pre Design Report Supplement will include the following: • Draft schedule featuring coordination between Redwood City and. SBSA, • Opinion of soil conditions and their impact on tunneling method, • Measures required to protect the existing 48 -inch Walnut Street Gravity Interceptor crossing Highway 101 and the SBSA 48 -inch force main paralleling the east right -of -way line of Highway 101, • Results from discussions with Caltrans concerning existing pipeline records and allowance for advancement of a 60 -inch concrete product pipe without a casing, • Completed Risk Register, • Identification of mitigation for impact to the County Women's Correctional Center from construction, and • Preferred alignment, presented in a 30% design sketch format, • Preferred tunneling method, presented in a 30% sketch format with supporting text, • List of Specifications. REV: 12 -05 -13 VR Page 12 of 18 ATTY /AG8.2013,2401Ken nedyJenks_237900