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Bidjugde
JOB
Ebbetts Pass Reach 1 Water Pipeline Replacement
BID DATE
02/26/19 - 2:00
AGENCY
Calaveras County WD
ESTIMATE
$5,000,000
SCOPE
The Calaveras County Water District invites bids for construction of the Ebbetts Pass Reach 1 Water Pipeline Replacement Project along State Route 4 (SR-4) in Calaveras County, CA. An existing 8-inch steel water main installed in 1965 is being replaced due to its poor condition, series of failures and repairs. The project consists of furnishing and installing 23,000-ft of new 12-inch and 1,300-ft of new 8-inch dia. fully mechanically restrained ductile iron water main including pressure reducing stations, fire hydrants, air valves, and other misc. piping and appurtenances. The alignment (see Figure 1) starts at Hunter Dam Rd near Avery, CA, continues westward along SR4 highway through Hathaway Pines, Red Apple Ranch and ends 6,300-ft downhill from the entrance of Forest Meadows. Except for 1,100-ft section on US Forestry Service property near Hunter Dam Rd., the alignment is in Caltrans SR-4 right-of-way from post miles PM 32.3 to 37.0. Both existing and new pipelines are located primarily past edge of pavement within the south side of the right-of-way, along with an existing buried high voltage electrical line. Given its age, poor condition and high pressure (250-psi), caution must be taken when excavating or working in close proximity to the existing active pipeline. An important challenge of the project is sequencing work to keep the existing pipeline operational and install the new pipeline without causing service interruptions and to safeguard public health and bacteriological sterility in the water system by following AWWA disinfection procedures. For parts of the alignment, the Contractor must provide temporary bypass piping to maintain continuous water service in order to remove the existing steel line from the trench and then install the new pipeline. Lastly, the Contractor’s work is subject to encroachment permits, traffic control requirements, environmental mitigations, and numerous other permit conditions that must be performed by the Contractor during the course of work. Engineer’s estimate is $5 million. Alesiad@ccwd.org
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