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I. INTRODUCTION Ms. Chelsea Chandler is proposing to subdivide a f 10.69 acre property into four rural residential Parcels. Mr. Zack Wong, PE of Wong Engineers, Inc. is the consulting civil engineer on this project, which consists of a General Plan Amendment and a Zone Reclassification. The Pre -Application documents pertaining to this project are found in Appendix A, along with the current APN/District Viewer Maps and the Tentative Maps. The project site is in a rural, unsewered area of San Joaquin County, east of the City of Stockton. Domestic water for the future development of the subject property will be individual private wells to serve each Parcel. A public well is located directly north of proposed Parcel 2 that serves the adjacent subdivision. The applicable 200 ft setback radius from this well is noted on the Tentative Map found in Appendix D. The San Joaquin County Environmental Health Department (EHD) requires Nitrate Loading and Soil Suitability Studies for projects in unsewered and/or current nitrate impacted areas, or for projects which may potentially impact the underlying groundwater with nitrate. This Study determined the nitrate -nitrogen impact potential from each of the proposed four residential Parcels, based upon the maximum number of bedrooms each single family residential (SFR) structure on each Parcel can support. This report complies with the San Joaquin County Development Title, Section 9-1105.2 for the referenced Studies. Additionally, this proposed project must comply with the Environmental Health Department Onsite Wastewater Treatment System Standards, specifically Section 10 - "Requirements for Waste Disposal for New Land Developments." In summary, the following information was obtained from these studies: Results of the soil percolation testing reveal that the surface soils (indicative of typical leachline depth) and medium soil depths (indicative of sump structures) have limited permeability. It appears the deeper subsurface soils (indicative of seepage pits) will manage the majority of future effluent flow volumes for all four proposed Parcels after long-term acceptance rates (LTAR) are achieved. Within the text of this Report, bolded Section (§) numbers are referenced at the beginning of an applicable sentence, paragraph or Appendix that correspond with the EHD Requirements Checklist. Section Numbers referenced as SSS§, are sections applicable for the Soil Suitability Study. Section Numbers referenced as NLS§, are sections applicable for the Nitrate Loading Study. II. SOIL SUITABILITY STUDY FINDINGS A. SUBJECT PROPERTY AND SURROUNDING STUDY AREA INFORMATION SSS§ 3.1, 3.2, 3.4, 3.5, 3.6. There are a minimum of 16 permits for onsite wastewater treatment system (OWTS) repairs on Cherryland Avenue exclusively, found in Appendix F. This is a large number of permits and indicates that systems in this locale have a limited lifespan. Regarding the subject property, EHD Files only reference the Application Referral. Paae -1- Chesizey C'misultdng