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Phase I Environmental Site Assessment East Main Street,Stockton,Califomia December 10,2004 Page 1 I V e-Auric Monitor Roundup Ultra 4.3 PHYSICAL SETTING SOURCES The sources used for determining the physical setting of the Site were the USGS Stockton East,California 7.5-Minute Topographic Map, dated 1968 and photorevised 1987, and the Federal Emergency Management Agency (FEMA) Digital Flood Rate Insurance Map panel 0602990455B. The topographic maps show the Site properties are located on the outskirts of an urbanized area at an elevation of approximately 30 feet above mean sea level.The terrain of the Site properties is nearly level with a slight topographic gradient to the west. The FEMA map indicates that the Site is located in Zone B, which is between the 100-year and 500-year flood zones. ` 4.4 HISTORICAL USE INFORMATION FOR THE SITE Historical use information regarding the Site was researched using aerial photographs located at the San Joaquin County Surveyor's Office and from the San Joaquin County Geographic Information Systems; ` and using historical USGS topographic maps and Polk and Haines city directories located at the Stockton Public Library, Stockton, California. Sanborn Fire Insurance Maps are not available for this area of Stockton, California. Copies of the topographic maps and aerial photographs are included in Appendix D. USGS topographic maps dating from 1952, 1968, 1976, and 1987 were reviewed.The 1952 map indicates the Site is agricultural with a structure and an orchard located immediately northwest of the Site. East (2' Main Street borders the eastern portion of the northern Site boundary and Mormon Slough borders the ` Site to the south. On the 1968 map, the orchard area appears to have shifted to small areas in the east, south, and west. Orchards are not indicated on the 1976 map, only the structure is indicated. An additional building is indicated west of the existing building on the 1987 map. Aerial photographs were obtained for the following years: 1937, 1952, 1963, 1975, 1983, 1998, and 2000. The Site appears to be agricultural fields and orchards. North-south trending single-lane roads appear to �2. 1/ �. divide Site properties and some of the planted areas. A waterway, designated as Morrison Slough, is located to the south and a road, designated as East Main Street, is located along a northern portion of the Site properties. With the exception of field areas and crops, there are no changes apparent in the 1952, 1963, 1975, 1983, 1998, or 2000 photographs. The Polk City Directories from 1962 through 2001 were used to research the Site properties. The 2002 ` Haines Criss + Cross City Directory was also used to research the Site properties. The Site property located at 4708 East Main Street was listed in 1966-1993 as a produce stand and in 1999 as"not verified." The property was listed as residential in 2002. This information pertains to the northern portion of APN • 173-210-06, which is not part of the Site properties. 4.5 HISTORICAL USE INFORMATION FOR ADJOINING PROPERTIES ` Historical use information regarding the adjoining properties was researched using aerial photographs located at the San Joaquin County Surveyor's Office and using historical USGS topographic maps and Polk and Haines city directories located at the Stockton Public Library, Stockton,California. Sanborn Fire Insurance Maps are not available for the adjoining properties. Copies of the topographic maps and aerial ` photographs are included in Appendix D. Aerial photographs were obtained for the following years: 1937, 1952, 1963, 1975, 1983, 1998, and 2000. In the 1937 photograph, the adjoining properties to the north show residential development with some w CA CONDO r