2017-193-E AMS - ECS Southeast, LLP to perform geotechnical, environmental site assessments

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DocuSign Envelope ID:4D07A756-4236-4526-A1 D2-89F0777755FB III 11011111 I� 1@iOJ, rrrr� 11 t °U°r 11 II 11 11 / °/11, 11 11 I 1111110101011001 011 1111111111 1 11111111111111111 Utility Locate Location of existing utilities must be addressed before beginning on-site exploratory work, as follows: • ECS will contact the public utility locator service—North Carolina One-Call Center—to request that utilities be marked prior to performing exploratory work(digging, drilling, etc.). The North Carolina One-Call Center will subsequently contact the utility companies typically known to have utilities located in the vicinity of the project site. Normally,this includes water,gas, sewer, electrical power, telephone, and cable. The individual companies mark their utilities using spray paint, but the marks only extend to the meter. It will be Orange County Government's responsibility to identify other utilities. • ECS hereby asks that Orange County Government notify us of all utilities located on site, particularly those utilities beyond the meter or private utilities not identified by the North Carolina One-Call Center. While ECS will take precautions to avoid utilities of which the owner notifies ECS, ECS is not responsible for utilities not marked by the North Carolina One-Call Center. • ECS can retain a private locator to locate utilities beyond the meters and public utilities. Hiring Private Locator services is beyond the scope of this proposal and is not included. However, for an additional fee of$900.00, ECS can retain a private locator to locate utilities beyond the meters and public utilities. If this is needed on this project, please so indicate on the attached "Proposal Acceptance Form" by initialing the "Private Utility Location" line. Field Exploration Services ECS proposes to advance a total of eight (8) borings along the outside perimeter of the existing building and/or within the alignment of the proposed tunnel to depths of 20 to 30 feet below existing site grades or auger refusal,whichever occurs first. The total amount of drilling is estimated to be 190 linear feet. The boring locations will be staked in the field by measuring distances and estimating right angles from existing site features. Based on review of aerial imagery, it does not appear that the site will require the use of a bulldozer or similar equipment to provide access to the boring locations. The scope of ECS' services does not include obtaining permits for clearing, preparing, or obtaining erosion control or grading plans for the clearing, installation or maintenance of erosion control devices, or site restoration in cleared or disturbed areas. The borings will be drilled using hollow stem auger drilling methods by an all-terrain vehicle drill rig or truck-mounted drill rig. Depending on weather, soil, and site conditions, ground disturbance (ruts, tire tracks, etc.) must be anticipated during this exploration program; this is the normal result of driving a large drill rig over a site. Neither ECS nor ECS' subcontractors are responsible for restoration of the ground surface and/or vegetation to its original condition. If auger refusal is encountered above a depth of 5 feet in any boring, an offset auger boring will be performed to further evaluate the refusal condition. Rock coring to extend borings below the auger refusal depth is not proposed. If ECS feels rock coring data may be beneficial to our recommendations, we will provide a verbal request for a change order prior to the completion of field work. Please note, that rock coring will require a mobilization of additional equipment. The proposed 30-feet-deep borings will be sufficient to determine the seismic site classification according to the North Carolina Building Code. 110 Illlr��rllllllll�ll yq (rr„ rr„jiri,��f f i 11J 1/J�r'� �l`"r171 Jrlf J�flj r"Ind /I�f /I/I//� ri 1; Il llllllllllU Ullll Ulll