13-016-TRN-003 Contract Modification 1

Home Browse Search

CONTRACT 13-016-TRN-003 EXHIBIT B Herrigstad Engineering&Surveying Guemes Channel Trail Phase VII Construction Engineering Services Statement of Work The Consultant shall provide engineering and surveying services during the Phase VII construction of the Guemes Channel Trail. The Consultant shall provide engineering support during construction and support design changes that may be required as the project progresses. Survey services to be provided by the Consultant will cover the entire 3,260 feet of trail which tracks along 30 feet of an old railway right-of-way. The 30-foot right-of-way is centered on the old rail location which is now defined as the center of the remaining rail road ties. The Consultant may be required to provide responses to contractor questions on drawing changes. Surveying will demark the extent of clearing limits with a 3-foot lath marked with flagging at approximately 50 OC. The survey will include hand clearing to the survey marks as needed. The 30-foot right-of-way will be marked on the water side of the future trail along the Sayre property from approximately Station 20+35 to Station 32+60 or the beginning of the Lovric property. A boundary survey may need recording at the end of the project. In addition,the Consultant shall provide geotechnical observation services to observe construction of the new trail to confirm that the site conditions are in accordance with the Report and the plans and specifications, and to provide consultation to the City and contractor regarding earthwork activities. For each geotechnical site visit,a written report shall be submitted reporting geotechnical observations of activities performed by the contractor. Geotechnical consultation during the project shall be provided as requested using accepted geotechnical testing procedures in conjunction with observation services. The estimated hours assumes six(6) half-day site visits for this effort including travel time and field report. Specific observation points to construction include: • Trail embankment fill and rock armoring placement • Condition of the trail subgrade,geotextile fabric placement, and pavement based preparation • Gravity block wall construction including subgrade preparation, placement of leveling course, drainage installation, and block placement The estimated level of effort for this project is as follows: Surveying 40 Hours Engineering 120 Hours Brush Clearing 12 Hours Geotechnical 34 hours