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I. INTRODUCTION This report issues my findings regarding the Nitrate Loading Study and Soil Suitability Study completed for the existing Rossetti's Grocery Store in Escalon, California. These studies were requested by Unit II of the San Joaquin County Environmental Health Department (EHD) and comply with the San Joaquin County Development Title, specifically Section 9-1105.2(d). Mr. Joe Da Silva and his son Rick Da Silva are in the process of purchasing Rossetti's Grocery Store from the present owners. Mr. Da Silva has not submitted a formal Application for changes to the operation and zoning of this facility until the purchase is finalized. Current zoning is AG-40. They would like to apply for a zoning change to commercial, which may take place under a General Plan Amendment/Re-Zone, or when the new General Plan is implemented. This is anticipated to be within the next.few years. Mr. Da Silva is proposing to operate a Deli/Kitchen within the grocery store if all County requirements can be satisfied. Consequently, EHD Unit E has requested these Studies as preliminary information before the formal Application is submitted. The Site Plan and associated civil engineering information will be submitted if all requirements are approved. Since the City of Escalon sewer and water have not expanded to the subject property, existing and new improvements will operate with the on-site domestic well and on-site wastewater disposal system. It is presently unknown when City of Escalon utilities are expected to serve the property, although this will not occur for several years, if not decades. A new on-site domestic wastewater disposal system may be imposed by EHD if the grocery store Beds with plans for a Deli/Kitchen operation. SSs§ 1.2. The total Parcel area s1.95 res. The project site is north of the city limits of Esc)alon, in the northwest corner of�sc on Bellota Road and Lone Tree Roads. Current land use of the property consists of the Rossetti Grocery Store, a small apartment directly north of the Grocery Store, the existing domestic well west of this apartment, a single family residential structure with a swimming pool, a detached garage, and the remaining area as open land. This land use is illustrated on the San Joaquin Parcel Viewer Map. The open area provides ample room for a new septic system. All three�structures contain a total of four bathrooms two in the grocery store, one in'the apartment and one"di the residential stricture. The purpose of these Stu i-es_v to collect the following information to fulfill EHD requests and rl' g . Q requirements and discuss septic system operational parameters to facilitate the transfer of information to EHD: - • To: 1.)Analyze the capacity of the indigenous soils underlying a potential new disposal area to accept anticipated wastewater flows, 2.)Assess the characteristics of the soil to mitigate nitrate impact, and 3.) Discuss operational parameters to achieve the two goals of proper wastewater management and nitrate loading mitigation for the proposed leachficld disposal area. This was t accomplished by the referenced testing,physical/chemical analyses and operational parameters incorporated into the wastewater disposal system. • Conduct soil physical and chemical testing for determination of the following: Physical testing included percolation testing and particle size analysis of the soil characteristics underlying the effluent disposal area. Chemical testing included analyses for the constituents that influence nitrate loading. 1 Chesney Consulting .I