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I. INTRODUCTION This report issues my findings regarding the Nitrate Loading Study, Soil Suitability Study and Wastewater Disposal Operational and Design Parameters for the Southwinds Church in Tracy, California. The Church is in the process of constructing a new Worship Center; consequently, 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). The Church Staff has provided the preliminary information to complete these studies. The Site Plan and associated civil engineering information have been produced by Shack and Company of Tracy, California. The architectural portion of the project has been produced by the architectural- design firm of Visioneering Studios of Irvine, California. Within the text of this Report, Bolded Section(§)numbers are referenced at the beginning of an applicable Paragraph or Paragraphs, 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. ,u S§2.3. Church is located on Middle Road near an area of north Tracy referred to as the Larch-Clo r area. Since the City of Tracy sewer will not expand to this area for decades, the are as, and will continue to operate with an on-site decentralized wastewater management system, commonly referred to as a septic system. For reasons discussed in this report, the septic system has and must remain operating as a"mound system" for the disposal of effluent. Domestic water is supplied by an on-site well. (SSS§ 1.2.' The project site is near the southeast corner of the intersection of Middle Road and 1--Lammers Road. Currently,the Church property consists of the buildings as illustrated on the Site Plan and on the Google aerial photos. The total Parcel area for the Church site is 16.51 acres. The following paragraphs summarize the purpose and findings of these Studies to fulfill the requirements of the EHD. Wastewater system operational and design parameters are also presented within this document to facilitate the transfer of information to FED: • The existing septic system was initially investigated to determine its current status. A report was prepared discussing these findings in detail, and is attached as"Attachment B"to this primary document. • An analysis was completed of the indigenous soils in the new effluent disposal area to determine the acceptance of the anticipated wastewater flows,along with an assessment of the characteristics of the soil to mitigate nitrate impact. Discussions are presented on the operational parameters to achieve these two goals of proper wastewater management and nitrate loading mitigation from the mound disposal system. These two goals were accomplished by the referenced testing, physical/chemical analyses and operational parameters incorporated into the design of the wastewater disposal system. 1 Chesney Consulting