07-10-03 Fill Dirt Review Committeeminutes

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07/16/03 16:12 FAX IaI 002 - e DETENTION BASIN B.C.F.C.D. UNIT B-S12~l-OO BAlUUS COUNTY, TEXAS INTRODUCTION The study reported herein is a Preliminary Geotechnical Investigation of subsurface conditions at the site of the proposed detention basins at H.C.F.e.D. Unit 8-512-01-00 in Harris CoUDly, TeXas. The 200 :I: acre tract is located at the northwest comer of Spencer Highway Ind Underwood near Pasadena, Texas. . AUTHORIZATION The study was per:fonned in accordance with our proposal no. G93-o8-12 dated August 11, 1993 an~ was authorized ~y Mr. Dennis W. Sander, P.E., ~f Sander Engineering Corporation on October 25, 1993. ] i J 1 , i ( ( I 1 'J j "I PURPOSE The purpose of the investigation was to determine the subsurface soil conditions at the subject site and assess the suitability of constructing a detention pond. The investigation also included assessing the suitabUity of the excavated soils from detention basin construction as highway embankment material. SUBSURFACE EXPLORATION The subsurface exploration at the site was accomplished by means of eleven (11) undisturbed core borings drilled to a depth of twenty five (25) feet below existing ground surface. The approximate boring locations are shown on the attached Boring Plan as depicted in Plate 1. The borings were of three-inch. nominal diameter. Undisturbed samples of the cohesive soils were obtained from the borings by means of thin-wall,. seamless st~i Shelby Tube samplen. All undisturbed samples were extruded mechanically from the core barrels in the field, wrapped in aluminum foil, and sealed in plastic bags to prevent moisture loss and disturbance. All of the samples and cores were then placed in core boxes and transported to our laboratory for testing and further study. . 1