2017-637-E AMS - ECS Southeast, LLP for subsurface exploration, preliminary geotechnical engineering services for Coleman Loop parcel

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DocuSign Envelope ID:2B387EC1-ED80-46E6-BC22-4F91ABE452FB � Vih°o1.1 io %1111 Jeli�laiii /Hullo 1 11 1 10001 1 11 011 III I 1 11111001 11111 areas must be clearly marked on plans provided to us and should be delineated in the field with flagging prior to our mobilization to the site. ECS cannot be responsible for disturbance of sensitive or restricted areas not identified in this manner. 01 0101' ECS will provide the base scope of services outlined in this proposal for a lump sum fee of $8,500.00 based on our unit rates that will be provided upon request. Our fee assumes that the proposed site is reasonably accessible based upon our assumptions detailed in this proposal. If any additional services are requested or required based on differing site conditions, we will contact your office (or assigned representative) for verbal and written authorization for additional services. Any additional services will be performed in accordance with our project unit rates on a time and material basis. SCIII DU III,,,E In preparing this proposal, we have assumed that the client will assist in the coordination of our access to the site with the current site owners/occupants. We anticipate being able to mobilize to the site within approximately 5 days after authorization to proceed and notification that the appropriate on-site personnel have been informed. We anticipate that the drilling operations will require about 3 days, and that the laboratory testing, after drilling is completed, will require about 4 days. Therefore, for time budget purposes, the entire scope should take about 4 weeks from initial authorization through final report submission. Verbal comments on findings can be provided within three days of completion of the borings, if requested. OP If IIIOII AIII,,,SiE;III VIIICiE;S ECS is capable of conducting additional services that can benefit your project greatly. We have provided a one optional service below for your consideration. Optional Seismic Refraction Testing You or your designers may be concerned with the potential for shallow zones of hard materials that if present, may present difficult excavation issues during mass grading. As an optional service, ECS can perform a seismic refraction survey at the site. The seismic refraction method of subsurface exploration is a non-invasive technique primarily used to determine the depth of soil, partially weathered rock (PWR), and competent rock layers. In addition to depth information, seismic velocity data provides an indication of material density or hardness and can be used in estimating excavation techniques that may be required for site development. Compressive waves are timed from an initiation point on the surface of the ground to receivers (geophones) located some distance away. Wave velocities increase as they are refracted off harder layers. By increasing the source to receiver distance over a straight line, a graph of time Mnllll MiN 1 r II(, rar /r)',/i%—(;1' (mmm J- J I wNMtlmlll wNiuNil