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Bidjugde
JOB
Trap Maintenance Hole Modification & Upgrade - Phase 5
BID DATE
03/19/14 - 10:00
AGENCY
Los Angeles
ESTIMATE
$861,992
SCOPE
This project, fifth in a series of five projects comprising the Trap Maintenance Hole Modification and Upgrade Program, will modify 6 existing trap maintenance holes (MH) in various parts of the City by replacing the existing gas traps with the new standard trap design S-139-2 and modifying maintenance hole bases. The project will also rehabilitate 6 MH shafts by the application of City-approved Type 2 liners. In addition, 22 new gas trap maintenance holes and 5 new trap house connection will be installed. Three existing new style gas traps will also be re-installed in new MH Locations. This project will also remodel the maintenance hole base per Standard Plan S- 139-2, and Rehabilitate the maintenance hole walls (shaft) as indicated in the schedule of work. This Project will include gas trap installation, removal of metal steps, confined space entry, bypass system, odor control and possible sewer pipe repair in case the adjacent pipe is unable to support new gas trap. The contractor must test trap mechanism to ensure that it is working properly. The contractor shall spray a masking agent to control odors at the request of the Engineer.

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