4102 RUCKER AVE SAFEWAY FUELING STATION 2016-01-01 MF Import

APPENDIX A FIELD EXPLORATION E-8493-6 Our field expioration was performed on April 25, 2002. Subsurface conditions at the site were explored by drilling two borings to a maximum exploration depth of twenty-one and one-half 121.5) feet below existing grade. The borings for this study were drilled by Grepory Drilling using a CME 45C, limitod access drill rig. Approximate boring locations were estimated by pacing irom site features depicted on the site plan provided by the c�ient. The elevaiions were estimated relative to one another with an assumed base elevation of 100 feet. The locations and elevations of the borings should be considered accuratn r,�ly to tha degree implied by the method used. These approximate locations are shown on the Boring Location Plan, Plate 2. The field exploretion was continuously monitored by a geologist from our firm who classified the soils encountered, maintained a log of each bori�g, obtained representative samples, measureA proundwater levels, and observed pertinent site features. The samples wero visually classified in accordance with the Unified Soil Classification System that is presented on Plate A1, Legend. Representative soil samples were collected and retumed to our laboratory lor funher exemination and testinp. Lops ol the borings are presenled on Plates A2 throuph A5. The final logs represent our interpretations o( the lield lops and the results ol the laboratory examination and tosts o1 tield samples. The stratHication lines on tho lops represent tho ap�roximete boundaries between soil types. In actual�ry, the transitions may be more pradual. Thr, borinps wore drilled usinp hollow stem aupers. In eAch borinp, Standard Panetration Tesis (SPT) ware performed nt salected intervals in peneral accordance with ASTM Test Desiqnation D-1588. The splil spoon sam��les wero drive� with a ono hundred lorty (1401 pound hammer (reely (allinp thirty 130) inches. The number o1 blows required to �1riv�; the last twelvo (12) inches of penetration are called tho "N•valuo". This value heips to characterize Ihe site soils and is used in our enpineerinp analyses. These results are r�tr,ord�d on thr� bonn� lops at ihr. appropri,�tc samplc depihs. I.mih C��uil�nl�. inC.