2008-096 Purchasing - Coulter Jewel Thames Amendment to Agreement for Design of Northern Human Services Center

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~: ~-~.~. YI ~:4 TM Coulter~Jewell Thames, PA 111 WEST MAIN STREET DURHAM, NORTH CAROLINA 27701 p919.682.0368 f919.688.5648 2'1 it ^ ~ { 0 f f? B F ii ? u! c LETTER OF AGREEMENT made this 9`h day of November, 2007 To The OWNER AND LEAD DESIGNER Orange County PO Box-8181 Hillsborough, NC 27278 By The ENGINEERING CONSULTANT Coulter Jewell Thames, P.A. 111 West Main Street Durham, North Carolina 27701 ~/~ ~2/3~2po~ ~ -CI For Civil Engineering Consulting Services To assist Orange County with the design of an on-site sanitary sewer treatment system to serve the Northern Human Services Center located north of Hillsborough on NC 86. Description This proposal is for Civil Engineering services related to the design and drafting of various components of a sanitary sewer treatment system to serve the Northern Human Services Center. Orange County has developed a conceptual and process design for the septic system. The major components of the new sewer system includes a grinder sewage lift station and force main to pump sewage to the new treatment facility to be located on the east side of NC 86, a sewer treatment facility, an effluent lift station, and nitrification fields. This proposal is for Coulter Jewell Thames to design specific pumping and piping components of the overall system and to provide drafting and other assistance for other portions of the project performed by Orange County. Design work performed by Coulter Jewell Thames P.A. will include engineering drawings and technical specifications for assembly by Orange County into the Contract Documents. Coulter Jewell Thames will assemble or assist with assembly of the bid package and contract documents as directed by Orange County. It is understood that this "Agreement" holds harmless Coulter Jewell Thames, P.A. of any responsibility relative to the process and treatment of waterwater being performed by the on-site sanitary sewer treatment facility that will serve the Northern Human Services Center. Process design and associated kinetics and the quality of treatment of the wastewater for the Northern Human Services Center will be the sole responsibility of Orange County. SCOPE OF BASIC SERVICES: 1. Grinder Lift Station 1.01 Design of a new grinder lift station in the reaz of the Northern Human Services Center to pump sewage to the east side of NC 86. If space does not allow construction of a new lift station, design will include conversion of the existing effluent pump tank to the new grinder lift station. 1.02 Design of a new force main to cross NC 86 and that will discharge at the head of the treatment facility on the east side of NC 86.