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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 County Environmental Health Department (EHD), specifically: 1.) To create a Homesite Parcel and a Designated Remainder from this subdivision and determine if the soils underlying these two proposed Parcels are acceptable for the proper operation of any future septic system, 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 (§ 1.1, 1.2, 2.1) The purpose of this project-is to subdivide an exis 'ng 50.8�re Parcel into two 6 Parcels denoted as Parcel 1,which,is:to � .98Acres as the Homesite Parcel, and a Designated Remainder Parcel, vhicli is to.Ue 47.85 acres: Mr. and Mrs. Ruiz's single family residential (SFR) structure exists on proposed Parcell,.aldiig with a Butler agricultural metal building. A domestic well and septic system serve the residential structure. The entire subject Parcel (except for a small amount of land around the two referenced buildings) is in agricultural row crop production. There is no irrigation well on the property since irrigation water is obtained from the Banta Carbona Lower Main Irrigation Canal, which forms the eastern property border. (§3.7) Parcel orientation is denoted on the Tentative found in,A-ppend�x ,produced by the engineering firm of Schack & Company, Inc. ThereVeo oposal�to build aan�h-ere on these Parcels. However, any building that may be built onsignated Remainder Parcel in the future will have to observe all EHD requirements, which would include aere test in the location of a proposed building. The existing house on Parcel I and a primary and asecMr dart' structure on the Designated Parcel gives a potential maximum total of three septic systems on the two Parcels consisting of approximately 50.83 acres. This is a density of o_,ne septic system per 17 acres, which can be considered a very low density. Nitrogen fertilization and mineralization from organic matter decomposition occurring in the surrounding cropland would constitute a much greater nitrogen input than from a maximum of three septic systems on the property. (§ 1.1 and 2.1) The subject propertyis approximately five miles southeast of the city of Tracy. Surrounding property use consists predominately of agricultural production land, extremely low density of single family homes, ranchettes, and ag buildings. Current zoning is AG40, which will not change. Municipal sewer will probably never serve this area, at least not for several decades. (§ 4.2) Any of the above land use could-create,en pnmental concerns that may be discovered in / the future. Asevidenced by the testing-oftlie on-sit domestic well, a groUndwater nitrate concentration at 52.8 ppm (as nitrate is above the Maximum Contaminant LevelLMC—L,.v..�._�__ Chesney Consulting