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` Indian River County Page 6 <br /> Project No . 00- 11 - 893 <br /> ' j Boring Approximate Soil Description (USCS) Test Results <br /> Designation Sample Moisture Percent finer than U.S. Organic <br /> f <br /> Depth, feet Content Standard No. 200 Sieve Content <br /> . . % % fines % <br /> TB- 1 3 Light gray to gray or light brown to 21 . 8 3 . 3 <br /> - - <br /> brown fine - SAND ; trace silt, with few <br /> sand-sized shell fragments (SP) <br /> TB - 1 15 Light gray to gray. clayey fine SAND 28 . 5 18 . 1 ' - -with few shell fragments (SC <br /> TB-4 . -1. . 5 Gray fine SAND, trace silt (SP) 21 . 6 4 .2 1 . 1 <br /> HA- 1 1 : 5 . Light brown fine SAND ; trace silt, with 29 . 8 1 .3 - - - <br /> sand-sized shell fragments (SP <br /> AB- 1 1 .0 Brown fine SAND; trace silt, with few 9 .7 2 :9 1 .0 <br /> ' sand-size shell fragments SP <br /> AB-2 0 . 5 Dark gray to- black fine SAND; slightly 29 .0: 8 . 1 6 .7 . . <br /> silty, slightly organic with few to some <br /> 1 roots (Topsoil) <br /> AB-2 10 Gray slightly silty fine to medium 133 9 . 0 - - - <br /> SAND, with shell fragments SP-SM <br /> AB4 1 . 5 Dark. brown to dark -gray slightly silty 24.6 5: 1 2 .6 <br /> fine SAND (SP-SM <br /> HA-2 1 :0 Gray slight silty <br /> fine fine SAND SP-SM 30 . 8 5 .7 2. 7 <br /> EVALUATION AND RECOMMENDATIONS <br /> ' Results of this study . indicate -' that the evaluated site areas are suitable for the planned <br /> construction when viewed from .a geotechnical engineering perspective . Subsurface <br /> j conditions at the site . are not expected ,. to - impose severe constraints or limitations on the <br /> I construction from a soil mechanics and earthwork viewpoint. Except for a thin layer of <br /> topsoil thatblanketsmost of 'the site area, we did not encountersignificant deposits . of organic <br /> -sails 'or other unsuitable materials within the borings that were drilled <br /> We anticipate that the planned restrooms may be supported -on shallow spread footings - and <br /> use conventional slabs-on-grade for- the ground floors . . Depending on the loading conditions, <br /> we expect that . the proposed observation tower maybe supported by either a shallow or deep <br /> (pile) foundation system. Conventional earthwork construction should be appropriate for the <br /> proposed . " Geoweb " and " gravelpave " parking and driveway areas. provided that the site is <br /> properly prepared for the construction and the site grading fill is composed of relatively clean <br /> sands (i . e . , USCS SP . and SP SM soil types) . <br /> - <br />