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20 <br /> NN N p <br /> Task 11.2—Bid Services <br /> • WSP will support the ORANGE COUNTY prior to the Prebid meeting and will prepare the meeting agenda. Up <br /> to 2 WSP staff members will attend the Prebid meeting to conduct the meeting and answer any questions proposed <br /> by the contractors. WSP will prepare minutes from the Prebid meeting. <br /> • WSP will address up to 2 days of addendums to the plans. If additional time is needed, a supplemental scope of <br /> work will be required. <br /> • WSP will prepare the engineer's estimate for the project letting and review the Bids after the Letting and prepare <br /> bid tabs and project award letter for the ORANGE COUNTY. <br /> Task 11 Fee$18, 040.87 <br /> Task 12— Geotechnical Services <br /> Task 12.1 -Field Exploration <br /> The subsurface exploration and testing for the proposed bridges will be conducted in accordance with the <br /> current NCDOT Geotechnical Unit Guidelines and Procedures Manual. WSP proposes to perform 3 SPT <br /> borings for the structure subsurface exploration. A total of 90 feet of SPT and 25 feet of Rock Core was <br /> estimated; however, actual boring depths for the bridges will be determined in the field; two end bent borings <br /> will be advanced to refusal and rock core will be performed on the interior boring to the depth that satisfies <br /> drilled shaft. <br /> We plan to utilize an ATV (rubber-tired or tracked) drill rig with an automatic hammer for this project and <br /> borings will be performed utilizing hollow stem auger and/or mud rotary drilling techniques. Steel casing will be <br /> advanced as needed to provide a stable borehole during drilling and sampling. Standard penetration tests will <br /> be performed at regular intervals in accordance with the American Association of State and Highway <br /> Transportation Officials (AASHTO T-206-87) until SPT or drilling refusal is encountered on Hard Rock. <br /> WSP will provide a full-time rig geologist/engineer to supervise field drilling activities and complete the field <br /> boring/coring logs and daily activity sheets as required by NCDOT. <br /> WSP has budgeted 1 day/night of traffic control services in our estimate as the proposed interior bent boring <br /> location will be on the median of 1-40. The traffic control operation will consist of lane closures with flagging <br /> operations. We will consult with the District Engineer to determine if there are any lane closure requirements or <br /> any action to accommodate the current construction. At this moment, we assume the drilling for the interior <br /> bent requires to be performed in nighttime. <br /> NC One Call will be notified prior to performing borings to locate existing underground utilities. If a private <br /> utility locator is required to locate existing underground utilities, WSP can arrange for that service to be <br /> provided for an additional cost. WSP will also contact and coordinate with property owners for boring access if <br /> necessary. We anticipate the property owner contact sheet will be transmitted to WSP prior to start of the field <br /> investigation. <br /> Page 10 <br />