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^ t , <br /> KLE/NFELOER <br /> Bright ft ple.Poght Solutions <br /> 4 SITE CONDITIONS <br /> 4.1 SITE DESCRIPTION <br /> At the time of our study, the subject site was a vacant field with scattered weeds. The property <br /> was bound to the north and west by an orchard, to the east by a winery, and to the south by an <br /> orchard and the Escalon Fire Station No. 2. The parcel is zoned AG-40 (General Agricultural) <br /> and includes the project site, the fire station, and a preschool, but not the adjacent elementary <br /> school. <br /> We understand that an on-site septic/leach field system will provide sewage disposal and the <br /> existing well at the preschool will provide water for the facility and restroom. A map showing the <br /> approximate location of the development, and septic/leach field system is presented on Figure 2. <br /> The locations of onsite wells are shown on Figure 1. <br /> 4.2 PRESENT AND PAST USE <br /> The project site is currently undeveloped. It is unknown to us whether other structures were <br /> located on the parcel in the past. Based on a historical aerial photograph review, it appears that <br /> the site, including the area of the proposed development and septic/leach field system, has been <br /> used for agricultural purposes for many years. Orchards dating to 1993 were noted in the area <br /> of the proposed development. We saw no evidence that the site has been used as a dairy, and <br /> we know of no other past uses of the site. Historical aerial photographs from 1993, 2002, and <br /> 2009 of the site are presented on Figure 4. <br /> 4.3 SUBSURFACE CONDITIONS <br /> Based on the percolation test holes drilled for this investigation, the subsurface soils at the <br /> proposed development generally consist of silty sand to a depth of about 5 feet. Based on our <br /> experience in the area, these soils are generally loose to medium dense and may be underlain <br /> by medium dense to very dense silty sand. <br /> The Soil Survey of San Joaquin County, California published by the U.S. Department of <br /> Agriculture, Soil Conservation Service(1992) refers to the near-surface soil within the project area <br /> 20200144.002A/ST01 9R1 01556 Page 5 of 14 September 24, 2019 <br /> ©2019 Kleinfelder www.kleinfelder.com <br />