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Phase I Environmental Site Assessment 2329 East Vine Street, Stockton, CA-Page 2 GPI Environmental Management 3.3 Site Improvements The subject property is currently vacant. Based on the County of San Joaquin Assessor's Office records and historical aerial photographs, a single-family residential structure and detached garage occupied the subject ` property from 1930 to April 1998(See Appendix C, Plates C1 and C5, Photographs 1,2, 13 and 14). 3.4 Current Site Usage The subject property is currently vacant. The subject property has been continuously utilized as residential since Z J at least 1930 to April 1998. The subject property has been vacant since April 1998. It is our understanding the current property owner proposes to subdivide the subject property into two parcels for future residential development. The subject property is zoned R-L (Low Density Residential).This zone is intended to provide for neighborhoods consisting of detached, single-family residences located within or immediately adjacent to population centers which have public services. The subject property is in legal conformance to the current zoning and permitting requirements. No hazardous or potentially hazardous materials were observed at the subject property at the time of our site (3,� reconnaissance. 3.5 Historical Site Usage A 1913 historical topographic map shows the subject and adjacent properties as undeveloped. The County of San Joaquin Assessor's Office residential building record indicates that a former 584 square foot residential structure was constructed in 1930. A detached garage structure was located to the north of the residential structure. The 1957, 1963, 1970, 1983, 1993 and 1998 aerial photographs shows the residential structure on the subject property. It is our understanding that the residential and garage structures were demolished in April ll 1998. The subject property has remained vacant since April 1998. Table 1 below summarizes the historical known land uses prior to 2005 that have occupied the subject property based on historical aerial photographs, topographic maps, and assessor office records. TABLE 1 i L Year Land Use Source/Notes 1913-1930 Vacant 1913 historical topographic map San Joaquin Assessor office records 1930-April 1998 1 Residential 1957, 1963, 1970, 1982, 1993,and 1998 aerial photographs 1998-2005 Vacant 1998 and 2002 aerial photograph Historical documents indicate that the subject property has not been utilized for agricultural purposes since at least 1930 and does not appear to include activities associated with the generation, use, storage and disposal of 012--33, regulated quantities of hazardous or potentially hazardous petroleum fuel products, agricultural chemicals and/or other regulated hazardous materials and wastes. A Site Transaction Screen Questionnaire regarding the presence of potential sources of on-site soil and/or groundwater contamination has been completed by the current property owner and GPI. The Site Transaction Screen Questionnaire has been enclosed in Appendix E. 3.6 Current and Historical Usage of Adjoining Properties GPI reviewed the following historical records for the subject and adjacent properties: 1957, 1963, 1970, 1982, 1993, and 1998 aerial photographs (Appendix D); and • 1913 and 1949 historical topographic maps; and Based on these records, adjacent and nearby properties in all directions within one-quarter mile radius of the subject property, with the exception of two former leaking underground storage tank locations, have not been �j,� historically utilized for activities associated with the generation, storage, handling, use or disposal of regulated quantities of petroleum and/or other hazardous materials or wastes.