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LUCCA WINERY SOIL SUITABILITY & NITRATE LOADING STUDY MAY 2013 I. INTRODUCTION - This report issues the findings for the Nitrate Loading Study and Soil Suitability Study completed for the subject property and project under examination, located at 16261 East River Road near Ripon, California. The purpose of these Studies is to provide the San Joaquin County Environmental Health Department (EHD) with the required information pertaining to the soil and groundwater in relation to nitrate loading potential from the future on-site domestic wastewater disposal system. These studies comply with San Joaquin County Development Title, Section 9-1105.2(d). Within the text of this Report, Bolded Section (§) numbers are referenced at the beginning of an applicable Paragraph(s), or Appendices that correspond with the EHD 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. NLS§ 2.3, SSS§ 3.1. The subject property is located outside of the city of Ripon's Planning Area/sphere of influence. It should be noted, that LAFCo adopted in April 9, 2010 the cities planned expansion of its sphere of influence, the subject property is located within the proposed sphere of influence (Appendix A). The city of Ripon's sewer facilities have not yet expanded to this area, although they will eventually. This time frame is presently unknown, but could be decades. Domestic water for the subject property will be provided by an existing on-site domestic well. The existing home on the property utilizes a septic system that is to the west of the property that was constructed in 1997. The existing leachfield is currently functioning for the home, and has no history of repairs Furthermore, the Domestic wastewater disposal will be managed by the existing on-site septic system; hence the necessity of these Studies. SSS§ 1.2. The project currently consists of the Phase I Lucca Winery, Wine Production Facility and the proposed expansion, Phase 11. The Use Permit Application and related information are found in Appendix B. For Phase I it is proposed to construct a new - restroom facility into the existing farm shop, which will be partially converted into a winery. Once the Phase I facility exceeds its capacity, the Phase 11 facility will be constructed. The following is a summarization of the information collected to complete - these Studies and fulfill the requirements of EHD. Wastewater system operational parameters are also discussed within this report to supply additional information to EHD: • The primary disposal area and the required 100% reserve/replacement/addition areas have been described and are illustrated on the Site Plan • The on-site soils were analyzed for the ability to accept future wastewater effluent flows and to assess their characteristics in the proposed Ieachfield area Page 11