Estimated Start Date will be on October and End Date will be on March The work necessary for the completion of this contract consists of:
1. Mobilization of equipment and personnel to the well site.
2. Disconnecting the piping & electrical systems from the well and removing the motor, pump column and pump bowls from the well. Inspect the condition of the pump system and submit a report to the City for its refurbishment/repair or for replacement. City staff will handle all electrical disconnections from the permanent motor. Permanent motor may be stored on-site inside the pump house on a pallet supplied by Contractor.
3. Initially conduct wire-brushing and bailing of sediment fill from the bottom of the well. Use a hydrogen peroxide solution to help remove encrusting material from the casing walls.
4. Conduct an initial video survey of the entire well casing.
5. Perform Casing Inspection Thickness Measurement (CITM) survey following the video survey, to determine the current thickness of the well casing.
6. Optional: Install casing patches to damaged louvers (if identified during CITM survey), as specified.
7. Optional: Perform a gyroscopic plumbness and alignment survey and caliper survey on the well.
8. Optional: Install a Type 304L Stainless Steel casing liner and gravel pack, as specified.
9. Perform "Air-Jetting"of the well to help dislodge and loosen any material from the perforations and the gravel pack around the well.
10. Conduct chemical treatment of the well using HerChemTec solutions.
11. Perform mechanical re-development via simultaneously swabbing and airlifting of the chemical solutions from the well. Fluids generated during this process shall be treated prior to discharge to the local storm drain system.
12. Mobilize, install, operate, maintain and then remove a temporary test pump and test motor capable of pumping up to 3,500 gpm.
13. Conduct pumping development by pumping and surging.
14. Conduct a 12-hour step-drawdown test and a 24- to 48-hour constant rate pumping test.
15. Near the end of the constant rate pumping test, perform a dynamic spinner survey in the well.
16. Remove the test pump and disinfect the well.
17. Re-install the new pump components in the well and conduct vibration testing, and trim balance, followed by a 72-hour pumping test at the design rate. Disinfect the pump components during installation.
18. Perform well chlorination and clean up the well site.
Liquidated Damages : $2,000/Day
Response Types : Line Item, General Attachments, Subcontractors, Bid Bond
Type of Award : Lump Sum
License Requirements : Contractor's License "C-57" Required
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