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CITY OF SANTA ANA RFP NO.: 21-127 SA-2 PRESSURE CONTROL STATION RELOCATION AND TRANSMISSION MAIN IMPROVEMENTS The Consultant shall be responsible for developing a potholing location plan and when approved by the City's Project Manager, will be responsible for managing the required potholing. The City anticipates use of the City's Contractor for subsurface exploration for the pothole requests. The Consultant shall be responsible for scheduling all potholing with the City's Contractor a minimum of two (2) weeks in advance of when any potholing will be conducted. The Consultant shall submit all traffic control plans related to potholing activities to City staff for review. The Consultant shall log all potholing information and is responsible for including this information in the Basis of Design and on the Final Design Plans. For the purposes of this RFP, the Consultant shall assume a maximum of twenty (20) potholes will be required. The Consultant will be required to obtain permits and pay all applicable fees for all potholing. Backfill and paving will be as required by the Permitting section of the Public Works Agency. The pavement section shall match the existing pavement thickness at a minimum. The Consultant shall research all available records at the City, to verify the existing right-of-way for the project area and confirm ownership of the right-of- way. The Consultant shall review the available information and will inform the City of any issues of concern regarding potential problems having to do with prior rights, license agreements, encumbrances, etc. Task 3. Geotechnical Recommendations The Consultant shall be responsible for conducting necessary geotechnical testing to determine the existing pavement and base thickness, sub -grade soil type and evaluation of the street structural section's condition. The Consultant shall perform field and laboratory testing as necessary to recommend pipe bedding requirements, vault house foundation requirements, excavation and shoring requirements, retaining walls as required and a new pavement structural section throughout the Project limits. The Consultant shall perform foundation design analysis, provide earthwork/structural recommendations, pipe bedding requirements, and pavement reconstruction details for the construction of the Project. The Consultant shall also perform a corrosion analysis to assist in pipeline material selection. This information will be included in the Basis of Design, on the Final Design Plans and in the Final Specifications. The Consultant shall be responsible for preparing traffic control plans for all geotechnical field work and will be responsible for notifying the Project Manager two (2) weeks in advance of any geotechnical field work being conducted. The Consultant shall submit all traffic control plans to City staff for review. The Consultant/Contractor will be required to obtain permits and pay all applicable fees for all geotechnical potholing. Backfill and paving will be as required by the Permitting section of the Public Works Agency. The pavement section shall match the existing pavement section at a minimum. Page 3 of 1 l