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INTRODUCTION FFThisitability Study presents the results of our investigation concerning the soil strata and under the subject property referenced on the Title Page. Our study was completed to satisfy the requirements of the San Joaquin Environmental Health Department, specifically: 1.) To determine if the homesite Parcel that is being split-off remains acceptable for a septic system which will function properly for its anticipated lifespan,2.) Test water from the on-site domestic well for nitrate and the agrichemical DBCP/EDB, and 3.) Provide recommendations based upon the environmental criteria encountered in this study. Our report is in compliance with the requirements for a Soil Suitability Study under Development Title Section 9-1105.2 Item (d) of the San Joaquin County Ordinance Codes. SUBJECT SITE AND STUDY AREA BACKGROUND INFORMATION The purpose of this project is to create a homesite parcel. The subject property is currently zoned Agriculture-40 (AG 40) and will consist of two Parcels: Parcel "1" will be the residential parcel that contains an existing home with a well and septic system. This Parcel was originally specified to be 10 acres; however, it is our understanding that due to Parcel size requirements and Williamson Act issues,this homesite Parcel is now to be 5 acres. The attached Tentative Parcel Map does not reflect this change, but does illustrate the designations and orientation of the subject Parcels. The remaining Parcel is referenced as the "DESIGNATED REMAINDER" Parcel and will be 40.51 acres. It is currently planted in pasture grass. As noted on the Tentative Parcel Map, there are no buildings on the Designated Remainder. The topography of the site is flat with a contour line of 10 feet traversing north of the property. However, design criteria for slopes may have to be considered if a second unit dwelling is built, in which the structure is built above the flood plain. On-site stormwater drainage flows to the north, south east and west from the homesite onto the surrounding pasture. Additionally, there is a drainage ditch adjacent to Mancuso Road. Drainage does not appear to affect the existing septic system. The property is subject to the 100-year flood. The property is located east of the city of Tracy, directly east of Interstate 5 and consists predominately of agricultural production land -primarily pasture land due to the high water table. Surrounding structures consist of very low density single family housing, residential ranchettes, barns and the Duel Vocational Institute. Sewer hookups for the houses on Mancuso Road to the City of Tracy will probably never occur. A review of Application Permits on file with the San Joaquin County Environmental Health Department shows there have been no Applications for Repairs/Additions to septic systems within the one-half mile radius study area,with particular emphasis to houses on Mancuso Road. Since the water table is definitely shallow in this area, seepage pits or sumps are not allowed. Mr. Pombo stated that he has never had a problem with his septic system,other than during the floods of 1997/1998. The lack of septic system repairs and additions within the study area may be attributable to the extremely low density of housing and the possibility of repairs/additions occurring privately. Page -1- va!!ey dig Research