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19 January 2012 AGE-NC Project No. 11-2006 Page 4 of 7 EQUIPMENT DECONTAMINATION Prior to sample collection, soil sampling equipment was thoroughly rinsed with clean water after being washed with a solution of Alconox. Probing rods and drilling equipment were thoroughly cleaned prior to soil probe boring advancement. BORING ABANDONMENT Soil borings were abandoned by backfilling with portland cement from the total depth to surface grade. The surface at each location was completed with a cold asphalt patch. GEOPHYSICAL SURVEY On 21 December 2011, a geophysical survey was performed at the subject property by NorCal Geophysical Consultants of Cotati, California. The survey was performed to help verify the presence or absence of any former underground storage tanks at the property.The survey was performed utilizing metal detection, electromagnetic line locating and ground penetrating radar. The subject area was surveyed in a 4,900 square foot (70- foot by 70-foot square) area surrounding boring B1, where field evidence of petroleum hydrocarbons were previously encountered. A report of findings, which includes detailed procedures and methodologies used to perform the survey has been included as Appendix C. FINDINGS Soil stratigraphywas determined from field data.The petroleum hydrocarbon impactto soil, soil-vapor and ground water was quantified by laboratory analysis. Stratigraphy and Soil Analytical Results In general, brown dry silty sands were encountered in borings B7 and B8 at 5 feet bsg. Black to gray, dry and moist clay with variable plasticity was also encountered in both borings at 10 and 30 feet bsg. Blue to gray silty sand and mottled fine to medium grained sand was encountered in boring B7 and B8 at depths between 15 and 27 feet bsg; gray moist to saturated, variable plasticity clays were encountered from 10 to 30 feet bsg in boring B7 (Appendix B). Advanced GeuEnvirunmental,Inc.