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H — I PHASE 1 ENVIRONMENTAL SITE ASSESSMENT 4101 S. Airport Way, Stockton, CA August 2009, Page 3 of 15 3.0 PROPERTY OVERVIEW 3.1 Property Layout The property is in the City of Stockton,California,on the southeast comer of South Airport Way and Industrial Drive(latitude 37.910200,longitude 121.258200). The property is shown on a plat provided by the San Joaquin County Assessor Department as a single parcel(Parcel 31)that is comprised of 24.89 acres.Photographs of the property are provided in Appendix A. A topographic map(Ref. 1), site plan,plat map, emergency evacuation map,and aerial photographs are provided in Appendix B. The property is zoned for commercial/industrial use and approximately 5 acres have been developed for commercial use near the northwestern comer of the property.The remaining 20 acres are undeveloped.The developed area contains an 81,000 sq. ft.building, loading/unloading docks for trucks and rail cars,an outside equipment storage area,a stormwater detention pond, and paved roadways,vehicle parking areas and truck access areas. 3.2 Environmental Setting The property is at an elevation of about 20 feet above mean sea level and has tittle topographic relief. Other than the building, paved areas,and stormwater detention pond, the property is covered with grass.North Little John Creek flows to the west and is located on the north side of Industrial Drive,approximately 100 feet north of the subject property. The creek drains into French Camp Slough about one mile west-southwest of the subject property. Based on information provided by EDR,the subject property is located within a 100-year flood plain. The property is underlain by soils that are described as follows by the Natural Resources Conservation Service(Ref. 2). Jacktone Clay(180), 0 to 2 percent slopes Jacktone-Urban land complex(181),0 to 2 percent slopes The soils are underlain by bedrock described as Quaternary Alluvial Fan Deposits overlying Upper Cretaceous marine sedimentary rocks(Ref. 3). The Stockton Fault is situated a few miles north of the subject property(Ref. 3). Based on information provided by a San Joaquin County groundwater report(Ref. 4),the depth to groundwater in the vicinity of the site is between 50 and 60 feet below ground surface. The direction of groundwater flow is west to southwest toward the San Joaquin River. This means that shallow groundwater beneath the subject property would originate beneath properties to the east.