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13 August 2019 AdvancedGeo <br /> AGE Project No. 19-4782 E n v i ro n ni e n t a l <br /> Page 4 of 14 <br /> and 10 feet deep. Repaired one leach line to 80 feet (April 2013); and repaired two leach <br /> lines to 80 feet (September 2013). <br /> ADDRESS: 17607 French Camp Road <br /> LOCATION: 120 feet northeast of property <br /> SEPTIC SYSTEM: Permit date 1963; new construction of septic system: 1,500-gallon <br /> tank, two compartments, and three leach lines 50 and 75 feet long. <br /> ADDRESS: 17607 French Camp Road <br /> LOCATION: 120 feet northeast of property <br /> SEPTIC SYSTEM: Permit date 1976; new construction of septic system: 1,200-gallon <br /> tank, two compartments, and three leach lines 70 feet long. <br /> ADDRESS: 17607 French Camp Road <br /> LOCATION: 200 feet east of property <br /> SEPTIC SYSTEM: Permit date 2010; new construction of septic system: 1,600-gallon <br /> tank, two compartments, two leach lines 50 feet long, and two sumps 14 feet long and <br /> 10 feet deep. <br /> ADDRESS: 18040 S. Arboreal Way <br /> LOCATION: 350 feet southwest of property <br /> SEPTIC SYSTEM: Permit date 1990; repair/addition of septic system: septic tank, two <br /> leach lines 50 feet long, and one seepage pit, 8 by 8 feet and 12 feet deep. <br /> 3.6. PROPOSED MAXIMUM SEPTIC TANK USAGE ON SITE <br /> The new proposed septic system is planned to be located in the southeastern half of the <br /> parcel over 230 feet away from the domestic water well at the adjacent property that will <br /> service the subject property (17699 ST RT 120). The proposed septic system will service <br /> the planned residence to be developed on the property. The proposed residence will have <br /> three (3) bedrooms. The proposed septic system will be used by a maximum of four (4) <br /> people per day, 365 days per year. The average and reasonable maximum usage of <br /> wastewater for a three-bedroom home by residents is 150 gpd per bedroom for a total of <br /> 450 gpd. <br /> 4.0. GROUNDWATER INFORMATION - REGIONAL HYDROGEOLOGY <br /> The Geologic Map of California, published in 1966 by the California Department of <br /> Conservation Division of Mines and Geology, shows the site area within the Great Valley <br /> Syncline (GVS), a large, elongate, northwest trending structural trough. The GVS is <br /> subdivided into two major divisions designated the Sacramento and San Joaquin Valleys, <br /> which have been filled to the present elevation with thick sequences of sediment ranging <br /> in age from Jurassic to present day, creating a nearly flat-lying alluvial plain extending <br /> from the Tehachapi Mountains in the south to the Klamath Mountains in the north. The <br />