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(§ 1.0) INTRODUCTION This Soil Suitability Study presents the results of my investigation concerning the soil //characteristics and groundwater under the subject property referenced on the Title Page. It was completed to satisfy the requirements of the San Joaquin Environmental Health Department (EHD), specifically: 1.) To determine if the proposed homesite Parcel 1 to be created from this subdivision is acceptable for the proper operation of a septic system which will function as intended for its anticipated lifespan, and 2.) Provide analysis and recommendations based upon the environmental criteria encountered in this study. This 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. Within the text of this Report, bolded Section (§) numbers are referenced at the beginning of an applicable sentence,paragraph or paragraphs, or Appendices that correspond with the EHD Requirements Checklist for a Soil Suitability Study. (§ 2.0) SUBJECT SITE AND STUDY AREA BACKGROUND INFORMATION X§ 1.1, 1.2, 2.1 ) The purpose of this project is to subdivide an existing 65.581 acre Parcel, into two Parcels denoted as Parcel 1,which is to be 2.8 acres and a Designated Remainder, which is to be 62.78 acres. Mr. and Mrs. Stokes' single family residential (SFR) structure is proposed to be built on Parcel 1. The homesite building pad has been constructed and is depicted on the S.J.C. Parcel Viewer Map found in Appendix A. It is proposed to install the septic system leachfield near the northeast comer of the building pad. The Designated Remainder is presently planted in wine grapes, and will continue as such. There is an irrigation well denoted as the"pump"on the Tentative Parcel Map, which is directly east of the access road to the residential building pad. Two domestic wells are denoted by the shop in the extreme southeast comer of the Parcel, and are designated as the North Domestic Well and the South Domestic Well. A septic system serves the existing residence. The new home that will be built on Parcel 1 will have its own domestic well and septic system. A§3.7) Each Parcel orientation is denoted on the Tentative Map found in Appendix A,produced by Mike Farley, PLS. It is possible EHD would support a second unit dwelling on proposed Parcel 1. Any additional building proposed to be built on the Designated Remainder will have to observe EHD requirements,which would include a perc test in the location of the proposed building. If a primary house and second unit dwelling were built on Parcel 1, and a primary (existing) and second unit dwelling were built on the Designated Remainder, this would give a total of four septic systems on the two Parcels consisting of approximately 66 acres. This is a density of one septic system per 16.5 acres,which can be considered extremely low. Nitrogen fertilization and mineralization from organic matter decomposition would constitute a much greater nitrogen input than from these septic systems. �§ 1.1 and 2.1) The subject property is two miles southeast of the town of Thornton. Surrounding property use consists predominately of agricultural production land, a wood products industrial facility,wastewater ponds to the north, extremely low density single family homes, ranchettes, and ag buildings. Page-I- Chesney Consulting