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Consultants <br /> Environmental& Engineering Services <br /> April 4, 2012 <br /> Robert Lawrence <br /> Orrick, Herrington & Sutcliffe LLP <br /> Columbia Center <br /> 1152 15th Street Northwest <br /> Washington, DC 20005 <br /> Subject: Phase II Subsurface Investigation <br /> 678 North Wilson Way <br /> Stockton, California <br /> AEI Project No. 305662 <br /> Dear Mr. Lawrence: <br /> AEI Consultants (AEI) is pleased to provide this report which describes the activities and results <br /> of the Phase II Subsurface Investigation (Phase II) performed at the above referenced property <br /> (Figures 1 and 2). This investigation was completed in general accordance with the authorized <br /> scope of services outlined in our signed proposal number 30514 dated February 14, 2012. <br /> 1.0 SITE DESCRIPTION <br /> The subject property, which consists of commercial building, is located on the east side of North <br /> Wilson Way in a mixed commercial and residential area of Stockton, California (Figure 2). The <br /> property totals approximately 0.63 acre and is improved with a one-story building totaling <br /> approximately 6,100 square feet. The building is of slab-on-grade construction, without <br /> basement or sub-grade areas. The subject property building is currently vacant (most recently <br /> occupied as a Hollywood Video store). In addition to the subject property building, the property <br /> is improved with asphalt-paved parking areas and associated landscaping. <br /> The property is at an elevation of about 18 feet above mean sea level. The nearest water body <br /> is the Stockton Deep Water Channel located 1.13 mile to the southwest. <br /> 2.0 BACKGROUND AND PURPOSE <br /> A Phase I Environmental Site Assessment (ESA) was performed by AEI as detailed in a report <br /> dated March 5, 2012 (AEI Project Number 303839). According to the Phase I ESA, a previous <br /> limited Phase II Assessment had been conducted at the subject property in 1997 by Kleinfelder <br /> regarding the former gasoline service station identified on the property from 1927 to 1952 and <br /> auto repair, bodyworks and/or tire service from 1942 to 1977. Kleinfelder's investigation <br /> included three (3) borings to 50 feet below ground surface (bgs) for the collection of soil and <br /> groundwater samples. Soil and groundwater samples were collected and analyzed for Total <br /> Petroleum Hydrocarbons (TPH), Volatile Organic Compounds (VOCs), Semi-VOCs, and Heavy <br /> San Francisco(HQ)I Atlanta I Chicago I costa Mesa j Dallas I Denver .Los Angeles Miami I New York I Phoenix I Portland I San lose <br /> www.aeiconsultants.com <br />