Site work for a water / sewer project in Daly City, California. Completed plans call for site work for a water / sewer project.

Construction, Development and Testing of the Margate Well The City will not hold a pre-bid meeting since the drilling site is open for public inspection from dawn to dusk. The work includes the construction, development and testing of a new drinking water well on City property located on the northeast side of Reservoir 5B on Margate Street. Questions should be directed to the office of the, Joshua Cosgrove, 153 Lake Merced Blvd. Daly City, California 94015-1097, telephone (650) 991-8204, Fax (650) 991-8220 A. SCOPE: 1. The objective of the work described in this and the related specification sections is to construct a public potable water supply well that will yield approximately 500 gallons per minute (gpm). In achieving this objective, the water supply well will be completed in water-bearing formations to a depth of approximately 920 feet. 2. The work includes: a. Setting and cementing a 32-inch-diameter surface casing to a depth of 75 feet. b. Drilling an 18-inch-diameter, minimum, pilot borehole below the surface casing utilizing reverse circulation drilling equipment to a depth of 920 feet, collecting formation samples for sieve analysis, conducting geophysical logging, and obtaining depth-specific water samples from aquifers selected by the City's Representative. The production well will be constructed at the same location as the pilot borehole. c. Drilling a 30-inch-diameter borehole below the surface casing to the depth of approximately 920 feet, conducting a caliper log, setting blank casing and louvered well casing, gravel packing, installing a cement seal, initial well development by airlift swabbing, further development by pumping with a deep well turbine pump, and establishing well characteristics through test pumping activities. d. The final well borehole shall be 30-inches in diameter in order to accept 14-inch-diameter casing, a 4-inch-diameter sounding/TV access tube, and to provide an annular space of appropriate thickness to receive gravel filter and grout seal media. e. The work also includes filing of state drilling reports; conveyance of water to the drill site; disposal of water, cuttings, and drilling fluid; safety and protective measures; and other work incidental to the project.