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3. Coordinate public utility locating for two (2) soil borings locations; near the proposed culvert <br />replacement abutments. <br />4. Develop a safety plan for exploration work and coordinate with drilling subcontractor. <br />5. Direct, observe, and document two (2) soil borings up to 35 feet deep each, or to bedrock <br />(likely sandstone) each using air rotary methods. If rock is encountered, rock coring will not <br />be completed as it is typically not necessary for shallow foundation design for short span <br />structures that are except from seismic design. Standard penetration test (SPT) soil samples <br />will be collected about every 5 feet of depth, or at discretion of the on-site engineer or <br />geologist. Drilling and sampling will be observed by a geotechnical engineer or geologist. <br />Borings will be backfilled in accordance with DOE requirements and patched at the surface <br />with cement. Excess soil cuttings from the proposed borings will be spread on site. <br />6. Collect near surface representative soil samples and assess particle size distribution of the <br />bank and channel material within 2S feet upstream and downstream of the proposed bridge <br />(total of four samples). <br />7. Review soil and rock samples collected from drilling and bank and channel. <br />8. Complete geotechnical tests on selected soil samples, including moisture content <br />determination, grain size analysis, and plasticity characteristics. <br />9. Participate in a teleconference discussion with the Owner regarding preliminary results of <br />the field investigation. <br />10. The soil boring locations will be tied to the project layout with a station and offset from the <br />existing bridge and shown on a Site Plan. <br />11. Adhere to appropriate maintenance of traffic plan and control (prOVided by the County) <br />while drill rig is at the project site. <br />Task 3.2 -Lick Creek project site <br />1. Teanaway Rd. Structure location <br />1.1. Review publicly available geologic maps, nearby well logs, and other available <br />geologic/geotechnical information at or near the project site. <br />1.2. Participate in one (1) site visit to observe surface conditions, and drill rig access, and <br />mark exploration locations for public utility locate (concurrent with Task 3.1). <br />1.3. Coordinate public utility locating for up to four (4) soil borings locations; near the <br />bridge abutment and approach locations. <br />1.4. Develop a safety plan for exploration work and coordinate with drilling subcontractor. <br />1.5. Direct, observe, and document two (2) soil borings near the culvert replacement. The <br />borings will be completed up to 3S feet deep with an additional 10 feet of rock coring <br />using air rotary and rock coring methods (4S feet total). Standard penetration test (SPT) <br />soil samples will be collected about every 2.5 to S feet of depth, or at discretion of the <br />on-site engineer or geologist. Drilling and sampling will be observed by a geotechnical <br />engineer or geologist. Borings will be backfilled in accordance with DOE requirements <br />and patched at the surface with cement. Excess soil cuttings from the proposed borings <br />will be spread on-site.