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rrI. INTRODUCTION This Soil Suitability Study and Nitrate Loading Study presents the results of my investigation concerning the soil characteristics and groundwater under the subject property referenced on the Title Page. This study was completed to satisfy the requirements of the San Joaquin County Environmental Health Department (EHD). The project consists of 11 parcels as depicted on the attached Site Plan Map, sequentially numbered 10 through 20. The EHD is specifically concerned with the following regarding this project: 1.) To determine if the proposed eleven parcels and particularly the assumed homesite areas are 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, particularly with regard to the soil studies and nitrate loading potential. This report is in compliance with the requirements for a Soil Suitability Study and Nitrate Loading Study under San Joaquin County Development Title Section 9-1105.2 Item (d). Within the text of this Report, bolded Section (§)numbers are referenced at the beginning of an applicable Paragraph or Paragraphs,Appendix or Table of Contents that correspond with the EHD 1 Requirements Checklist. Section Numbers referenced as SSS§, are sections applicable for the Soil Suitability Study Requirements Checklist. Section Numbers referenced as NLS§, are sections applicable for the Nitrate Loading Study Requirements Checklist. Other portions of text may also apply to other sections of the Checklists. !� II. SUBJECT SITE AND STUDY AREA BACKGROUND INFORMATION a SSS§ 1.1, 1.2, 2.1 The property is currently zoned Agriculture 40, and is located east of the City of Tracy, between Chrisman Road and Banta Road. The project consists of 11 antiquated Parcels, f encompassing approximately 110 acres of land that has been farmed for many years. The purchasers of each Parcel may construct a single family residential (SFR) structure, with an associated septic system and domestic well. It is possible EHD would support second unit dwellings on the proposed Parcels. Septic systems and wells for each Parcel must be installed r under EHD permit and inspection. West Side Irrigation District (WSID)water may be used for irrigation of acreage surrounding each homesite through an on-site pipeline system. Adjacent to the southeast corner of the property is an irrigation pond, which may be there indefinitely. SSS§ 4.2 Surrounding property use consists predominately of row crop and pasture land, low density single family residences, a railroad to the north, and commercial facilities such as small a businesses, large industrial complexes, and the east side of Tracy, which are all on septic systems. These systems have contributed to confirmed groundwater contamination. Page -2- Chesney Consulting i I