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1 KLE/NFELOER <br /> Bright People,Right Solutions. <br /> 1 INTRODUCTION <br /> 1.1 GENERAL <br /> Kleinfelder is pleased to present the results of our nitrate loading study for the property located at <br /> 17950 South Van Allen Road in Escalon, California. The development site is currently a vacant <br /> field between the existing Van Allen Elementary School and the Escalon Fire Station No. 2. The <br /> Assessor's number for the 16.95-acre parcel studied is 205-250-14. A site vicinity and well <br /> location map is resented on Figure 1. A site development map and a recent aerial photograph <br /> showing the approximate site and parcel boundaries are presented on Figures 2 and 3, <br /> respectively. The purpose of our study was to provide a nitrate loading calculation for use in septic <br /> system design. The study was performed in general accordance with the requirements of the San <br /> Joaquin County Development Title, Section 9-1105©. The following sections include background <br /> information regarding the project site, past and present uses of the site, and the groundwater <br /> conditions in the project area. In addition, discussions regarding our investigative procedures and <br /> the site conditions based on previous investigations by others are included. Finally, the results of <br /> our nitrate loading calculations and subsequent conclusions are presented. <br /> 1.2 PROJECT UNDERSTANDING <br /> We understand that an on-site septic/leach field system will provide sewage disposal for a <br /> proposed new Ag farm complex for Escalon High School. The development will include enclosed <br /> work areas, enclosed and open air animal shelters, and a work shop. We understand one of the <br /> existing wells at the adjacent Van Allen Elementary School will provide water for the facility. A <br /> map showing the approximate location of the development, septic/leach field system is presented <br /> on Figure 2. The locations of onsite wells are presented on Figure 1 <br /> According to the San Joaquin County Onsite Wastewater Treatment Systems Standards (Table <br /> 6.6), we have conservatively assumed a water-use-of 100 gallons per person per day. For the <br /> purpose of our evaluation, we have assumed an occupancy of up to 50 people per day. <br /> Accordingly, we have estimated the Average wastels-�ewage flow per week for the project site as <br /> follows: <br /> (50 people per day x 100 gal/person x 7 days) = 35,000 gal/week <br /> 20200144.001 A/ST019R95450 Page 1 of 12 May 8, 2019 <br /> ©2019 Kleinfelder www.kleinfelder.com <br />