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• <br /> The area is primari iy utilized for manufacturing and light <br /> industrial businesses; there are a few scattered residences, and <br /> considerable undeveloped land. Refer to Plate I for a general <br /> location map of the area. <br /> GEOLOGIC & GEOMORPHIC PROVINCE <br /> The property is situated in the lower Sacramento Valley, between <br /> the Sacramento-Mokelumne Rivers delta area to the west and the <br /> western slope of the Sierra Nevada uplift to the east. The <br /> topography is one of very low relief , with a westerly gradient of <br /> about 5 feet per mile. Plate II is from a USGS topograh�c sheet , <br /> and shows the major- features in the area. <br /> SOILS CLASSIFICATION <br /> According to the 1952 publication issued by the University of <br /> California, Berkley, College of Agricuiture titled "Soils of San <br /> Joaquin County, California" the site is underlain prin7arily by <br /> Landlow adobe clay terrace deposits; they are dark grayish-brown <br /> in color , with good to imperfect drainage and a Storie Inde of <br /> =9. There may be some Honcutt clay in the area; it has a reddish <br /> brown color , and a Storie index of 56. These surface sods are <br /> . underlain► by Capay & Stockton adobe clays. Refer to Plate III , <br /> Lai-en from the above publication, for a map showing the di stri b,,-T <br /> tion of the known soils in the area. <br /> DEPTH TO GROUNDWATER <br /> Ir January, 1991 , a groundwater monitoring well was installed on <br /> the adjacent property , (2431 Mariposa Road , ; owned b)t DJJ Co. , <br /> down gradient from a 3500 gallon UST which is located beneath a <br /> building and could not be removed. That well 15 appro%imately <br /> 225 feet southeasterly from the site of the removed tanks on <br /> Husby Crane property. The water table was encountered at 71 . 5 <br /> bql during drilling operations. <br /> According to San Joaquin Flood Control District maps , the <br /> peziometric surface was as high as 47 byl in the Spring of 1986 <br /> Plate IV is a portion of that map. <br /> LOCATION OF NEARBY WELLS <br /> According to a statement in the PAR prepared for BJ,I Co. by <br /> Geologic Audit Services, there is a well located in the NW/SW <br /> Sec. 17 , T. 1N. , R. 7E. , approximately 1/2 mile southeast of the <br /> Hitsi y Crane property. However , that well is not shown on the San <br /> Joaquin Co. Flood Control District location map; (Plate V.) There <br />