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Soil Suitability Study 33233 S. Koster Rd., Tracy, CA Page 1 the property. The present use of the property is irrigated farm land.how crops such as beans, tomatoes, wheat and corn have been recently planted-0n the property. A residence, guest house, workshop, and entertainment building have been constructed on the property. That development was initiated in 2001. Prior to the construction of these new buildings, all previously-existing farm buildings were demolished under a San Joaquin County Permit and the debris removed and disposed of at the Forward Landfill. Well No 1, which had served the farm buildings that were demolished, was retained to provide water for irrigation of the grapes planted on one acre of the property. A new domestic well was constructed in 2001 to supply water to the residence. SECTION 3.0: EXISTING AND PROPOSED SEPTIC TANK USAGE Section 3.1 Description of Existing On-site Septic Tank Usage The first building constructed on Parcel 1 in 2001 was a 4800 square foot workshop, which included a bathroom with a septic tank located at the north end of the building with the effluent discharged to a filter bed. The second structure constructed was a guest house, which has a septic tank located on its north side with the effluent discharging to leach lines on the east side of Parcel 1. Those leach lines were sized to accept waste water from the residence, which was constructed in 2003. A septic tank installed for the residence is on the east side of that residence and connected to the leach field on the east side of the property. The last structure constructed on the site is an entertainment building, which also has a restroom, the waste water from which is discharged via a lift station to the workshop septic tank. All of these waste water systems include conventional septic tanks with either a filter bed or leach field. They have functioned properly since the year 2001 with no need for repairs. Normal maintenance of the septic tanks has encompassed pumping of solids from the first chamber with no other maintenance work required. Section 3.2 Site Septic Permit Histo The permit history for the septic tanks systems is summarized in the following table, which is presented in the order of construction of the septic tanks. Septic System Date Constructed Permit Number • Workshop Septic System 2001 SR0025536 • Guest House Septic System 2001 SR0026060 Z_ • Residence Septic System 2003 SR0026060 Copies of the Septic System Permits for the shop, guest house and residence are attached (See Appendix).