The City of Port St. Lucie reserves the right to reject any and all proposals, to waive any and all informalities or irregularities, to negotiate with any qualified Proposers, and to accept or reject all or any part of any proposal as it may deem to be in the best interest of the citizens of the City. Bid Bond $1000.00 Project Estimated Budget $700,000.00 Scope of Work: The work in this annual rehabilitation contract consists of pulling pump and column pipes, inspecting and testing the well, back-plugging, acidizing, redeveloping, sanitizing, and reinstalling or replacing the pump equipment. Work shall be based on City's consultant well rehabilitation report and recommendation directive in an attempt to improve water quality and to maximize the well capacity after rehabilitation. Contractor shall furnish all labor, materials, tools, equipment, and supervision for the Well Rehabilitation Services. The Specifications included in these Contract Documents establish the performance and quality requirements for material and equipment and the minimum standards for this contract. Location maps, site plans, deep injection well diagrams and interconnection diagrams are provided in the attached Drawings. THE TASKS NEEDED TO REHABILITATE AND TEST A WELL MAY INCLUDE, IN SUMMARY: A. Pump efficiency test. B. Mobilize, remove and inspect production pump. C. Initial color down hole video survey. D. Brush casing, remove loose fill via air-reverse method. E. Chlorinate and surge with 2000 Ppm chlorine. F. Allow overnight sterilization. G. Airlift residual chemicals. H. Prepare wellhead for acid. I. Prepare wellhead for descaling. K. Install injection equipment. L. Install electromagnetic descaling equipment. M. Inject 500 gallons of 15% acid . N. Inject 2000 gallons of electromagnetic descaling solution. O. Airlift spent acid (direct air method ). P. Airlift debris ( direct air method ). Q. Repeat acid treatment. R. Repeat electromagnetic descaling treatment ( if needed ). S. Post chlorination. Disinfection of the well is in accordance with AWWA Standard C654-03 Disinfection of Wells. T. Reset pump and perform specific capacity test. U. Post treatment color video survey. V. Test Specific Capacity (SC)* after each well rehabilitation is completed. 1. Obtaining all permits required to modify the well and to discharge brackish water to a surface water feature. 2. Gaining access to the pump and well by removing the fence surrounding the well house as required and the access hatch above the well. 3. Setting a discharge pipe from the well to the adjacent drainage ditch or other discharge point. 4. Killing artesian flow in the production well prior to pump removal and restoring flow prior to development, testing and sampling. 5. Removing and installing the production pump. 6. Installing and removing the test/development pump. 7. Tending of the pump or well during dynamic (flowing) video and geophysical logging. 8. Completing static and dynamic video logs, static and dynamic flow logs, and other geophysical logs as described herein. 9. Conducting packer testing at up to four (4) intervals between the bottom of the casing and total depth of the well (1,350 feet) to identify anomalous water quality and discharge zones. 10. Collecting water samples from each tested interval as described herein. 11. Back-plugging the well with cement and possibly gravel to a specified depth. 12. Develop the well after back-plugging. 13. Perform specific capacity test after back-plugging. 14. Acidization of the well to increase specific capacity. 15. Develop the well after acidization. 16. Perform specific capacity test after acidization and development with water quality analysis. 17. Disinfecting, testing, and recertifying the well for public supply service. 18. Restore site to original condition.
.webp)
