SR 06:051 - Laserfiche WebLink

staking were unsuccessful in locating the existing 12" water transmission line adjacent to the Zone 7's flood control channel and therefore, the use of ground penetrating radar will be used to determine the 12" pipe location. TASK 2 The preliminary project site location for the Pimlico Turnout was determined to be unsuitable because of existing utility conflicts. Several utilities were in conflict, including a PG&E high- pressure gas main that would conflict with the turnout station's foundation and piping. Instead of relocating the utility lines, an alternative site was identified across the street, which avoids the PG&E high-pressure gas line. The site relocation will avoid utilities, but will require additional topographic surveying and a change in the existing street geometry to accommodate the building pad location and driveway access to the water turnout facilities. TASK 3 Preliminary soil samplings of the existing soils were taken along the Stoneridge pipeline and Pimlico pipeline aligmnent. Soil test results determined the soils to be corrosive and therefore detrimental to the future water piping. Therefore, the project scope will be expanded to provide for the design and installation of a galvanic anode cathodic protection system to avoid corrosion damage. TASK 4 In order to meet the operational needs of the City to fully utilize the storage capacity in the existing Tassajara water tank, a motorized operational valve will be installed within the existing water pipeline system along Santa Rita Road. The motorized valve will be operated remotely and tied into the City's existing SCADA system. The additional scope of work will include determining the site location needs, selecting the valve equipment to operate within the operation design range, designing the vault to house the valve and appurtenant hardware and integrating the valve's operation into the City's existing SCADA system. TASK 5 A portion of the Stoneridge water pipeline alignment runs in land owned by the Zone 7 Water Agency and will necessitate the need for an easement from the Zone 7 Water Agency. Additional services will be required to prepare a plat and legal description of the easement boundary for the dedication. TASK 6 Originally, it was planned to combine both projects as one, but because of the complexity of the work associated with the Pimlico water turnout station, the operational valving on Santa Rita Road, and the additional permitting needs through Caltrans for the Santa Rita valve installation, it was determined to be more efficient to separate the projects into two distinct bid packages. This will allow the Stoneridge project to go forward up to six months sooner than SR 06:051 Page 4 of 5