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26440,8875,&8925 Thornton Road Project No.2017-00010 Page 12 self-service fueling station with associated fuel island canopy, fuel tanks, and an electrical building for operation of a cardlock fuel dispensing station; there is no record of a septic or well, however, there is a permit on file with San Joaquin County EHD for a 2,000-gallon sand/oil separator. The CFN station currently utilizes portable toilets. The parcel located at 8875 W. Thornton has a 3-bedroom residence with a septic system consisting of a concrete septic tank of unknown size with one 100-foot length leach line; there is no record of a domestic well for the parcel. The site is located less than one-quarter mile east of Highway S. The property is approximately 4,800 feet west of the Mokelumne river. The general vicinity consists of commercial/residential lots within the community of Thornton surrounded by residential and agricultural use parcels. The elevation at the site, according to a United States Geological Survey2, is between approximately 10 and 15 feet above mean sea level (msl). The site is relatively flat, with topography in the area grading gently to the south-southwest. According to the San Joaquin County District Viewer web site,3 the subject property is zoned C-C, (Community-Commercial). This zoning designation "is intended to provide for the development,within central business districts or extensive commercial areas, of a full range of retail and service establishments,providing goods and services necessary to supply urban communities or regional markets". Location maps of the subject property are attached to this report as Appendix A, Plate 1 and 2. 1.2 Proposed Development The proposed development will be a Shell service-station and mini-mart with fast food service on the parcel located at 26440 N.Thornton road.The CFN station (8925 W.Thornton Road) will remain as is. The residential structure and associated septic system located at 8875 W.Thornton road will be demolished and utilized for the onsite septic system planned to service the proposed Shell service-station/mini-mart with fast food service, as well as the CFN station. The total acreage for the three combined parcels is approximately 2.37 acres. 2.0 CHEMICAL AND PHYSICAL PROPERTIES OF SOIL 2.1 Chemical and Physical Soil Properties The site is depicted on the Preliminary Geologic Map of Quaternary Deposits of the Lodi Quadrangle4 and falls within the Holocene aged Eolian deposits (Plate 3, Appendix A) herein called Qha. Qha is an alluvium unit derived from channel, levee, and floodplain deposits consisting chiefly of silt and clay with fine sand along principal drainage ways. 2 US Geological Survey,2015,7.5'Topographic Map,California,Lodi North Quadrangle. 3 San Joaquin County District Viewer,littp://sjmap.org/website/DistrictViewer/Viewer.asp. 4 Marchand,D.E.and Atwater,B.F:U.S.Geological Survey OF-79-9333,1:62,5000.Preliminary Geologic Map,Quaternary Deposits of the Lodi Quadrangle. " 5 Marchand,D.E.and B.F.Atwater.U.S.Geological Survey.Open File Report 79-933,1979. Petralogix Engineering,Inc. 26675 Bruella Road,Galt.Ca 95632 (209)-400-5729 www.petralogix.com