2005-184 - Laserfiche WebLink

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Title Searches as provided by COUNTY) field location of existing right of way monumentation and determination of the location and extent of existing right of way in the vicinity of the project location . C . Geotechnical Investigation tion An outline for the proposed geotechnical services provided by our sub-consultant GCME , Inc . in connection with the project ' s design is shown below. 1 . Conduct visual reconnaissance along the proposed roadway corridors. Include photographic record of typical , key, or anomalous site features noted during the reconnaissance . Review aerial photographs, information form the Soil Survey of Indian River County, Florida, and any geotechnical data furnished by the COUNTY. The Geotechnical Subconsultant may rely upon information furnished by the COUNTY without independent review and verification . 2 . Perform mechanical auger borings at pavement coring locations to a depth of six feet . Perform hand auger borins following ASTM D 1586 on 200 centers along the proposed roadway improvements to depths of six feet . Coordinate with utilities prior to start of borings at 200 foot centers will be located in non-paved areas and staggered from left side to right side of road . 3 . Measure and record depth to groundwater upon completion of each boring and one hour thereafter and log the date and time of measurements. 4 . Note any rubbish, trash, debris or auger refusal, if encountered. Also note any contamination with petrochemicals evident visually or through odor or the soils encountered . If petrochemicals are encountered, notify the COUNTY immediately. Appropriately backfill all borings after recording ground water levels . Work shall be done at times that will minimize traffic disruptions (avoid AM and PM peak traffic hours) . Provide appropriate lighting and safety traffic control devices such as flashing message/arrow boards during the work. Coordinate with utilities prior to start of coring activities . 5 . The typical Geotechnical Report will include : • Discussion of site regional geologic or physiographic setting. • Discussion of general and specific subsurface conditions encountered by the exploration . • Discussion of any adverse soil conditions (such as muck, high plasticity clays, etc .) encountered during the exploration . Include recommendations for remedial actions (removal , stabilization, etc . ) for any adverse conditions found. • Discussion of any petroleum or other hazardous contamination encountered by the borings . Identify and map locations of concern based on the reconnaissance . • Recommended LBR for pavement design (subsoil and subgrade) . • Recommendations for soil construction for roadway including base material , subgrade and embankment preparation and compaction . • Estimated hydraulic conductivity of soils encountered on left and right side of roadway based on typical relations between relative density, grain size, and soil type . 5