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I � INTRODUCTION This Soil Suitability Study presents the results of our investigation concerning the soil characteristics and groundwater I V nder the subject property referenced on the Title Page. Our study was completed to satisfy the requirements of the San Joaquin Environmental Health Department (EHD), specifically: 1.) To determine if the four Parcels that are proposed to be subdivided are acceptable for the proper operation of a septic systemwhichwill function as intended for its anticipated lifespan, and 2.) Provide analysis and recommendations based upon the environmental criteria encountered in this stud 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. Two well water constituents are typically sampled for EHD requirements: nitrate and the agrichemical DBCP (Dibromocl'loropropane). In previous Soil Suitability Studies in this locale, Mike Huggins of EHD waived the requirement for DBCP testing since there was no agricultural production in this locale from 1970 up through 1976 that would have used this material. However, since there is vineyard production directly west of the subject property, and although this vineyard was not in existence in the 1970's, it was decided to test the Tivald's well for DBCP for assurance that DBCP was not present. I SUBJECT SITE AND 'STUDY AREA BACKGROUND INFORMATION ' I The purpose of this project is toll I reate four new parcels from a total area of 9.22 acres, and construct a single family residential (SFR) structure on proposed Parcels 1, 2 and 4. Parcels 1, 2 and 4 are vacant. The Tivald's residence, septic system and domestic well currently exist on proposed Parcel 3. There is no proposal to build a second unit dwelling on Parcel 3. Each parcel area and orientations are denoted on the attached Tentative Map, found in Appendix A. It is possible EHD would support second unit dwellings on the proposed Parcels. I� The subject property is near the small town of Peters, one-quarter mile north of Copperopolis Road. Surrounding property use consiAs predominately of low density single family residences, ranchettes, horse ranches, and of ler types of ag buildings. The subject property is currently zoned rural residential. Municipal sewer will probably never serve this area, or at least not for several decades. As depicted on the attached US G S Map and the Tentative Map, the topography of the site is 100 feet above MSL, with a very slight land declination toward the southwest. Therefore, septic system design criteria for slopes do nothave to be considered. A review of Application Permits on file with the Environmental Health Department reveals there have been three Applications for Repairs/Additions to septic systems on Eastern Heights Road and none on Dietrich Road within tH�le study area. There have been 10 Applications for Repair/ Additions on Hewitt Road, one'. ile to the east. This can be considered a high number of Repairs/Additions/Replacements, and can be attributed to the indigenous clay soil type. Chesney Consulting