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FINAL DRAFT PRELIMINARY REPORT (Connections to EOCF #2) In addition, the City of Tustin stated that the existing meter vault needs to be upgraded at the same time. The proposed flow control vault is recommended to be located in the existing public parkway right-of-way or within an easement adjacent to the parkway. If not feasible or easement is difficult to obtain, it could be located within the street if there is open utility corridor. The option of locating the proposed pump station at the Pasadena Well site is not recommended due to the site restrictions at the well site, the long conveyance piping and the bore and jack of the Santa Ana Freeway. 6. REQUIRED PERMITS, LAND ACQUISITION AND EASEMENTS 6.1 City of Santa Ana East Station Facility will not require any land acquisitions as all of the proposed facilities are located within the City of Santa Ana property or public right-of-way. The only easement that may be required would be at the proposed connection to the SA-7 MWD meter vault facility for construction of the vault in the adjacent landscaping area to the public parkway. City of Santa Ana encroachment permit will be required for the conveyance piping. Traffic control will be a major concern for the City for the pipeline work in S. Grand Ave. and Ritchey St. Cambridge Station Facility will not require any land acquisitions as all of the proposed facilities are located within the City of Santa Ana property or public right-of-way. The only easement that may be required would be at the proposed connection to the SA-6 MWD meter vault facility for construction of the vault in the adjacent landscaping area to the public parkway. City of Santa Ana encroachment permit will be required for the conveyance piping. Traffic control will be a major concern for the City for the pipeline work in Fairhaven and Tustin Ave. 6.2 City of Orange City Yard Facility and the Batavia Plan will not require any land acquisitions as both of the proposed facilities are located within the City of Orange properties or public right-of-way. The only easement that may be required would be at the proposed connection to the OC No. 42 MWD meter vault facility for construction of the vault in the adjacent landscaping area to the public parkway. City of Orange encroachment permit will be required for the conveyance piping for both options. Traffic control will be a major concern for the City for the pipeline work in and or crossing Tustin Ave. as well as the railroad bore and jack operation at Olive Road and Fletcher Avenue. An Orange County Flood Control District and Army Corp or Fish and Game Permit will be required for crossing the Santiago Creek. In addition, an Orange County Flood Control District will be required for crossing of the existing culvert on Fletcher Avenue and a railroad permit for the railroad crossing at Olive Road and Fletcher Avenue. 6.3 City of Tustin Walnut Well Facility will not require any land acquisitions as all of the proposed facilities are located within the City of Tustin properties or public right-of-way. The only easement that may be required would be at the proposed connection to the OC No. 43 MWD meter vault facility for construction of the vault in the adjacent landscaping area to the public parkway. A City of Tustin encroachment permit will be required for the conveyance piping. Traffic control will be a major concern for the City for the pipeline work in Walnut Ave. and for the pump station construction that will impact Red Hill Ave. 7. ESTIMATE OF PROBABLE CONSTRUCTION COSTS 7.1 Probable Construction Costs The preliminary estimates of the probable construction costs for each of the proposed locations and facilities are summarized in Appendix D. Construction costs were based on the experience of our engineers, construction cost estimates recently prepared for similar projects, recently bid projects of a similar nature for the cities or other agencies, and industry standards. Orange 9t9%9 1District/Moulton Niguel Water District 30 - 28 5/17/2tIMA TECH Evaluation of Groundwater Conveyance Options 16