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CITY OF SAN] A ANA EXH I BIT A RFP NO.: 16 -114 SUBFURFACE UTILITY ENGINEERING SERVICES SCOPE OF WORK Jntt- oduetion and I3ackarounr,9: The City of Santa Ana is located in the County of Orange in Southern California. The City encompasses 77.5 square miles and a population ofovor 325,000 people, The City of Santa Ana Public Works Agency (PWA) is soliciting proposals for Subsurface Utility Engineering (SUE) Services. These tasks include location and identification of underground utilities in the planning, design, pre - construction, and construction phases. These services are on'catl and on an as- needed basis. This request for proposal (REP) provides interested qualified firms With the information enabling theist to subnut a Service 'Bid Proposal and to provide the services described herein, Description of LN'nrlu On as needed basis, the selected finufs shall provide the City with the following services as described herein. Underground Utility Locating: Determine the precise horizontal and vertical position, ,size, condition, material, utility owner /s name and other characteristics of underground utilities using vacuum excavation and or other comparable means. Obtain and review plans provided by the City showing areas requiring locating (te.st'boreholes) sites as identified by the plans, Excavate using a method to enable vertical and horizontal exploration and locating means. Furnish and install permanent above grormd marker and color code for each of the utilities (Le., PK, nail, peg, steel pin, or hub) directly above the centerline of the structure and record the elevation of rho marker atong with all the characteristics of the utility. • All horizontal and vertical data shall meet survey standards in accordance and as detailed by the Engineer • Provide the following as part of the borehole test information a. Elevation top and bottom of the utility tied to the datum and or Furnished information by the Engineer. The accuracy of the vertical elevation shall be within ( +/- .1(i). b. Elevation of the existing grade over the utility test borehole and the pavement and backt:ill materiat c. Horizontal location referenced, to the provided datuAn and or as requested by the Engineer d. Obtain pipe, duct bank, encasement, and multi - conduit configuration width (outside diarneter) Q. provide utility structure material composition and condition G Identify benchmarks used to determine elevations and include it as part of' the final deliverable report., g. (clentil:y and provide pavement thickness, material and condition and soil type characteristics. 251 -26