2006-095 - Laserfiche WebLink

Home Browse Search

✓JD6 � U �jS" Amendment ] To Work Order Number 4 Project Description and Understanding This Amendment Number 1 modifies the scope of work in Work Order #4 for additional survey, design, permitting and construction phase services for the Wabasso River HDD crossing. The Florida DOT plans on constructing sidewalk along the entire causeway (four bridges total), which will require removal of the existing watermain, forcemain, and concentrate pipes currently being supported from all four bridges . This scope amendment includes pipe replacement of the two other shorter span bridges which were not included in the original scope. The short span bridges are located just west of Marsh Island development and west of the western long bridge. The following scope includes additional survey, pot-holing for existing utilities , and modifications to the existing permits which have already been issued . The project has been advertised but put on hold in reaction to recent cost fluctuations in HDPE pipe due to the volatility in the petroleum market. Re-advertisement of the project is included in this scope amendment . The scope of work for the 24" reuse main includes the full extents of the Wabasso bridges from the mainland to the barrier island. A demolition plan will also be prepared for removal of the existing aerial watermain and forcemain on the existing bridges . The existing 12" brine line will be taken out of service and used as a reuse line . Included in this amendment is a tie-in to the existing 12" brine line on the Western side of the Western short bridge. Limited right-of-way is available in this area . Due to limited space on the south area of the CR-510, the reuse line will exit on the North side of the Western-most bridge . An open-cut, jack-and -bore, or research into available right-of-way will be investigated to confine the tie-in within a 200 ft area west of the Western bridge . SCOPE OF SERVICES The following amended tasks are included: Task 1 — Survey KHA will provide survey for two additional bridges along CR 510 causeway. The site survey will include, topo, and other above ground information in that area . Survey the planned drilling and landing sites for horizontal and vertical locations of existing features, including the implementation of available record drawing data . Survey of pot-holed information of existing underground utilities will be provided using vacuum excavation soft-surface locations with a test hole report for each location . It is assumed that the geotechnical information collected to date is sufficient information for the extents of this project. Additional soil borings are not included under this scope. Pot-holing information will be provided by Ground Hound Detection Services to identify as-built information of existing utilities . Approximately 70 holes using vacuum excavation soft-surface locations with a test hole report for each location will be provided. Task 2 — Design Consultant will prepare and provide design drawings of the proposed profile. Consultant will prepare design details of the proposed tie-in details to the existing watermain, forcemain, and proposed reuse main. Consultant will prepare technical specifications for the proposed piping and construction . It is P:\Utilities\UTILITY - EMPLOYEE POLDERS\Larry Brown\Wabasso HDD Proposal-Amendment I reO doc