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borders the Hammer-town property on the west; Danny Drive is the <br /> southern boundary of the Normac parcel. Refer to PLATES I & II <br /> for more details. <br /> GEOLOGIC & TOPOGRAPHIC SETTING: <br /> The properties are located in the southern portion of what is <br /> referred to as the Sacramento Valley. Mosher Creek is abouL 1 <br /> 1/2 miles to the north, and the Calaveras River is approximaLely <br /> one mile to the south. The area is one of very low relief, <br /> typical of central valley topography; drainage is to the south- <br /> west at approximately 5' per mile. The NorMac property is used <br /> for the storing and selling of irrigation products; PVC pipe, <br /> fertilizer, etc. The adjacent Hammertown Partners parcel is <br /> vacant, undeveloped land; it is planned to convert the property <br /> to residential use. PLATE III shows the properties in relation <br /> to nearby features. <br /> DEPTH TO GROUNDWATER: <br /> Based upon San Joaquin County Flood Control District maps, the <br /> groundwater was as high as 38-40' bgl when measured in the spring <br /> • of 1986; (refer to PLATE IV. ) More recent maps and data from <br /> monitoring wells in the area indicate that the water table is <br /> presently between 80 & 90' bgl. <br /> LOCATION OF NEARBY WELLS: <br /> PLATE V shows the locations of municipal wells in the area; the <br /> nearest groundwater monitoring wells are reported to be at El <br /> Dorado & Hammer Lane, about one mile northwest of the site. City <br /> of Stockton well #22, is located near the corner of Tam O'Shanter <br /> & Swain Road, on APN 084-050-09; (PLATE II. ) The driller' s log, <br /> (EXHIBIT F. ) shows that it is screened from 335' to 405' ; with <br /> the first sand recorded from lab' to 162' . It is reported that <br /> the well is produced only intermittently; static water level <br /> measurements have not been taken. <br /> BRIEF REVIEW OF PRIOR WORK: <br /> July 12- 1989 - 1, 000 gal UST removed by Jim Thorpe Oil, Inc. , <br /> (JTO. ) A strong gasoline odor and discolored soil was noted at <br /> the west end of the excavation, in the vicinity of the pump <br /> island Spoil returned to hole & covered with plastic. <br /> January 19 thru 22. 1990 - Site was re-entered and additional <br /> spoil was removed. Refer to EXHIBIT A for details <br /> 2 <br />