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Indian River County, Amendment No. 2 <br /> 66`h Avenue/ County Road 510 Roadway <br /> Widening <br /> To aid in the roadway, storm water management facilities and signalization <br /> foundation designs an outline for the proposed geotechnical services provided by <br /> our sub-consultant DE&T, Inc . in connection with the project ' s design is shown <br /> below. <br /> 1 . Conduct visual reconnaissance along the proposed roadway corridors. <br /> Include photographic record of typical, key, or anomalous site features <br /> noted during the reconnaissance . Review aerial photographs, information <br /> form the Soil Survey of Indian River County, Florida, and any <br /> geotechnical data furnished by the COUNTY. The Geotechnical Sub <br /> consultant may rely upon information furnished by the COUNTY without <br /> independent review and verification. <br /> 2 . Perform Standard Penetration Test (SPT) borings to determine soil <br /> parameters (i . e. , unit weight, friction angle and cohesion), an estimated <br /> wet season water table level and recommendations for drilled shaft <br /> construction for use in design of drilled shaft foundations . <br /> 3 . Perform Standard Penetration Test (SPT) borings to determine soil <br /> parameters of in-situ materials in the proposed storm water management <br /> facilities to determine potential for material to be utilized as roadway <br /> embankment. Measure and record depth to groundwater upon completion <br /> of each boring and one hour thereafter and log the date and time of <br /> measurements . <br /> 4. Note any rubbish, trash , debris or auger refusal, if encountered. Also note <br /> any contamination with petrochemicals evident visually or through odor or <br /> the soils encountered. If petrochemicals are encountered, notify the <br /> COUNTY immediately. Appropriately backfill all borings after recording <br /> ground water levels. Work shall be done at times that will minimize <br /> traffic disruptions (avoid AM and PM peak traffic hours) . Provide <br /> appropriate lighting and safety traffic control devices such as flashing <br /> message/arrow boards during the work. Coordinate with utilities prior to <br /> start of coring activities. <br /> 5 . The Geotechnical Report will include : <br /> • Discussion of site regional geologic or physiographic setting. <br /> • Discussion of general and specific subsurface conditions <br /> encountered by the exploration. <br /> • Discussion of any adverse soil conditions (such as muck, high <br /> plasticity clays, etc .) encountered during the exploration. Include <br /> recommendations for remedial actions (removal , stabilization, etc .) <br /> for any adverse conditions found. <br /> • Discussion of any petroleum or other hazardous contamination <br /> encountered by the borings . Identify and map locations of concern <br /> based on the reconnaissance. <br /> Page 6 of 11 <br />