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I. INTRODUCTION This report issues my findings regarding the Nitrate Loading Study, Soil Suitability Study and wastewater disposal operational parameters for the proposed Manteca Recreational Vehicle(RV) Storage Park. These studies were required by the San Joaquin County Environmental Health Department(EHD) and comply with the San Joaquin County Development Title, specifically Section 9-1105.2(d). Chatfield Construction is acting as the construction representative for Manteca Camper and Trailer, Inc. who is the owner/developer of the project. Chatfield Construction has provided the preliminary information to complete these studies. The Site Plan and associated civil engineering information are being produced by Mr. Carl Fiorica, R.C.E. of the engineering firm of RBF Consulting of Sacramento, California and John Martin,R.S.E. of Martin Consulting Group of Rocklin, California. RBF Consulting will also be incorporating the wastewater disposal design system parameters into their Site Plans,which are described in this Report. Since the City of Manteca sewer and water has not expanded to the subject property, the new site improvements will operate with an existing domestic well water, and a new on-site wastewater disposal system. A single family residential structure and a detached garage are currently on the property, and are in the process of being razed. It is presently unknown when City of Manteca utilities are expected to serve the property. SSS§ 1.2. The total Parcel area is 9.45 acres. The project site is near the east end of the city limits of Manteca, approximately 800 ft"east 6f Austin Road intersection on the south side of Highway 120. Currently, the subject property has a single family residential structure, a detached garage, domestic well and septic system. The SFR structure was used for on-site managers/caretakers when the property was previously used for RV and boat storage. This land use is illustrated in the San Joaquin County Parcel Viewer Map. It is proposed to improve the property as an RV storage, with individual, enclosed "condominiums" for each RV that would be purchased by the RV owner. These proposed improvements are illustrated on the attached Site Plan,prepared by Martin Consulting Group. The purpose of these Studies was to collect the following information to fulfill EHD requirements and discuss septic system operational parameters to facilitate the transfer of information to EHD: • To 1.)Analyze the capacity of the indigenous soils in the proposed disposal area to accept the 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 filter bed disposal area. This was accomplished by the referenced testing,physical/chemical analyses and operational parameters incorporated into the RBF Consulting design of 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