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Soil Suitability / Nitrate Loading Study <br />Ernst Property ■Tracy,CA <br />February 21, 2019 revised April 9, 2019 ■ Terracon Project No.NA197000 <br />Responsive ■Resourceful ■Reliable 3 <br />SOIL SUITABILITY/NITRATE LOADING STUDY <br />ERNST PROPERTY <br />APN 209-370-19 <br />16327 DIABLO COURT <br />TRACY, CALIFORNIA <br />OUR PROJECT NUMBER: NA197000 <br />Our office was contracted by Mr. Warren Ernst to conduct a Soil Suitability/Nitrate Loading Study <br />(SS/NLS) for the property at 16327 Diablo Court, Tracy, California. The formatting of this report <br />has been designed to follow, to the greatest degree possible, EHD Soil Suitability Study <br />Requirements Checklist, dated September 25, 2007, and Nitrate Loading Study Requirements <br />Checklist, dated July 14, 2003. <br />1.0 SOIL SUITABILITY STUDY <br />1.1 Introduction and Development <br />The Soil Suitability Study (SSS) was conducted to determine whether site soils are suitable for <br />septic system usage. The study was performed according to the requirements of Section 9- <br />1105.2(d) of the San Joaquin County Development code. A major element of the field work <br />included conducting percolation tests that meet absorption rates as specified by San Joaquin <br />County, Public Health Services, Environmental Health Department (EHD). A review of published <br />soil information, geologic maps, and groundwater information was also performed. <br />1.1.1 Site Description <br />The site is located on an approximately 2.07-acre tract of land located at 16327 Diablo Court, <br />Tracy, California, San Joaquin County, California, Assessor Parcel Number (APN) 209-370-19. <br />The site is improved with an approximately 3,119 square foot (SF) five-bedroom and two- <br />bathroom residence with septic system, approximately 840 SF storage unit, utilities, landscaping, <br />and a swimming pool. <br />According to the San Joaquin County Community Development Department website the site is <br />zoned rural residential (R/R) which is intended for large rural homesites with individual water <br />supply, sewage disposal, and storm water drainage. <br />According to the United States Geological Survey (USGS) California Quadrangles include Clifton <br />Courte Forebay (1978), Union Island (1978), Midway (1980), and Tracy (1981). The elevation of <br />the site is between approximately 100 to 105 feet above mean sea level with a topographic <br />gradient generally sloping towards the northeast. The adjoining land is relatively flat.