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<br />,,... REQUEST FOR PROPOSAL
<br />On -Call Water Resources Engineering Services
<br />(RFP NO.19-100)-I U-'-- � I -
<br />Relevant Project Experience
<br />Project Name I Client I Contact Name and Phone I Categories
<br />Date of Completion I Description
<br />. -is I am M. I kw=MVP is I IM 191FAVA
<br />Michael Baker provided design engineering services for the project consisting of rehabilitation of 28 sewer
<br />segments within the City of Fountain Valley. Michael Baker evaluated different rehabilitation options, including
<br />replacement, Cured in Place Pipe (CIPP), pipe -bursting, horizontal directional drilling, and sliplining and
<br />recommended alternatives for final design. An extensive geotechnical investigation was conducted to address high
<br />groundwater levels throughout the City of Fountain Valley and determine which trenchless technologies provide
<br />the best solution. Michael Baker is preparing final construction documents for the project, including plans,
<br />specifications, and permits, and several Orange Coast Sanitation District (OCSD) trunk connection permits.
<br />Proposed trenchless construction includes: 3,500 LF of 8-inch — 15-inch CIPP lining of existing sewers, and
<br />replacement of 3,000 LF of 8-inch — 15-inch of vitrified clay pipe (VCP) sewers with PVC standard dimension ratio
<br />(SDR) 26 sewer pipe according to the City of Fountain Valley's standards.
<br />Emergency Engineering Services for Prima Deshecha Canadae�
<br />Channel I1) RCB Repairs I Orange County Public. - I
<br />• .. . - ..-
<br />Michael Baker provided OCPW with project management and design services for the double RCB culvert portion
<br />of the Prima Deshecha Canada Channel (M01) in need of emergency repairs due to corrosion of concrete and
<br />reinforcing steel in various sections along the 500 ft. reach constructed in 1965. The RCB portion of the channel
<br />has existing parking and building facilities above, making reconstruction of the RCB by open trench replacement
<br />impractical.
<br />We reviewed existing condition assessment reports as well as conducted on site evaluations of the subject facility
<br />and recommended repair alternatives for emergency repairs. A comprehensive cost benefit study was prepared by
<br />Michael Baker and led to preparation of final PS&E for the improvements after evaluating five major alternatives:
<br />(1) Steel arch plate with load -bearing structure; (2) Aluminum arch plate with load -bearing structure or aluminum
<br />rectangular frame; (3) Fiberglass rectangular box; (4) Partial lining of existing RCB with new concrete lining with
<br />other portions repaired with concrete epoxy injection, surface treatment, and joint repairs; (5) Conversion from two -
<br />cell RCB to single cell RCB.
<br />Extensive research was provided by Michael Baker related to the hydraulic capacity of the RCB and construction
<br />techniques along with construction costs associated with each repair alternative. A Basis of Design Memorandum
<br />was prepared in close coordination with the District for decision making related to alternatives. Final preparation of
<br />PS&E and construction support services is included in this task order.
<br />Michael Baker performed preliminary studies and final design services to identify options, recommend upgrades,
<br />and provide final construction plans for two stormwater lift stations at the Santa Ana Civic Center. After flooding
<br />during the 2016 El Nino season, the mechanical and electrical equipment in both lift stations were deemed to have
<br />reached the end of their Iifespans. Michael Baker designed upgrades for both stations that included the
<br />replacement of pumps, sump pumps, motors, piping, and valves, structural and electrical improvements, site and
<br />drainage enhancements, and upgrades to SCADA and electrical instrumentation.
<br />The Santa Ana station was constructed in 1963 as part of the Civic Center Construction Program and operates
<br />during storms to prevent flooding of the parking structure and southern walkways. It is a vertical concrete structure
<br />with a concrete slab separating the lower wet well from the upper dry well. The dry well is set three feet below
<br />grade and houses three pumps and the electrical equipment. These pumps are 60 horsepower (hp), 30 hp, and 15
<br />hp, and are driven by electric motors. The 60-hp pump and motor were replaced in 2016.
<br />Project Name I Client I Contact Name and Phone I Categories
<br />Date of Completion I Description
<br />The Flower pump station operates to prevent flooding of the parking lot near the intersection of Flower Street and
<br />Sixth Street. It is a vertical concrete structure with a grate separating the lower wet well from the upper level, which
<br />houses the electrical equipment. The existing pumps are 10-hp and 20-hp axial flow pumps driven by electric motors.
<br />Completion Date: Phase(2019)
<br />Michael Baker provided professional engineering services to update the city's storm drain master plan. The city
<br />has an established drainage system with some segments over 50 years old and other segments recently
<br />constructed. The last city-wide hydrology and hydraulic analysis of the entire storm drain was completed in May
<br />1994. Michael Baker analyzed the city's main line drainage system to ensure consistency with Orange County
<br />requirements and prepared a hydrology study for the entire 28- square miles drainage area. The hydrology was
<br />divided into seven sub -watersheds, each draining to County regional flood control facilities. The 10-, 25-, and 100-
<br />year discharges were calculated in accordance with Orange County Hydrology Manual (OCHM). Small Area
<br />hydrographs were prepared for each inlet catch basin location for use in the hydraulic routing analysis. Existing
<br />inlet capacity was evaluated and rating curves for the captured flow (to the storm drain) were developed. The
<br />capacity of the existing storm drainage was evaluated based on the Orange County design criteria to determine
<br />system capacity sufficiency utilizing a hydrodynamic hydraulic model. A comprehensive list of needed storm
<br />drainage improvements was then generated. Michael Baker performed a 1D/2D hydraulic analysis to evaluate
<br />existing facilities and recommend feasible ultimate storm drain sizes based on the hydrology study results. The
<br />existing condition results were correlated using pictures and maintenance records of known flooded locations and
<br />recent January 2017 storms. The hydraulic analysis also evaluated the tailwater for tie-in location at the existing
<br />County regional drainage systems. HEC-RAS was performed for these regional channels using design discharges
<br />from As-Builts or FEMA studies. Michael Baker also provided an Esri ArcGIS geodatabase of city storm drain
<br />facilities, including storm drain pipes, city -owned drainage channels, manholes, catch basins, and culverts. The
<br />results of the 1D/2D hydrodynamic model generally result in smaller pipe sizing than traditional steady state or
<br />normal depth models. This results in a costs savings for the city.
<br />Michael Baker provided engineering services for replacement of the Rio Vista Valve #2 (RV-2), a 72-inch diameter
<br />butterfly valve located on the primary transmission main. SCV Water determined that after approximately 15 years
<br />in service, the valve needed to be replaced because the valve seat was damaged, and the valve did not fully seal.
<br />SCV Water also needed to identify the probable cause of the damage to the valve to prevent the damage from
<br />reoccurring. Michael Baker conducted a detailed analysis of existing conditions and operational data, including
<br />various site investigations and a detailed system hydraulic analysis, to determine the cause of damage to the valve;
<br />identified and evaluated project alternatives for replacing the 72-inch diameter valve, including different types of
<br />valves; and recommended facility improvements (e.g. modifications and/or replacement of equipment), as well as
<br />operational modifications to ensure that the valve is not damaged again. Final improvements included a new 72-
<br />inch butterfly valve, a 30-inch pressure control valve, relocation of electrical controls above grade, vault structural
<br />improvements, as well as site drainage, landscaping and parking improvements for the City of Santa Clarita's
<br />adjacent riding/hiking trail.
<br />Michael Baker provided professional engineering services for the design of a new 3.9 MG prestressed concrete
<br />reservoir that will provide a net increase of 2.9 MG of storage for the City's Intermediate Zone. The proposed
<br />I N T E R N AT 1 0 N AL
<br />Proposal I Page 18 On -Call Water Resources RFP No. 19-100
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