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I. INTRODUCTION This report issues my findings regarding the Nitrate Loading and Soil Suitability Studies completed for the subject property and proposed project under examination, located at 9851 East Hutchinson Road in Manteca, California. The purpose of these Studies is to provide the San Joaquin County Environmental Health Department(EHD)with information regarding the soil and groundwater in relation to permeability and nitrate loading potential from the existing on-site wastewater disposal system that will serve the new walnut hulling/packaging facility. The disposal system (a single building Men's/Women's Restrooms and filter bed disposal field) is existing because it was installed prior to the change in land use of the subject property. When the land use changed from Ag to Ag Processing(basically Ag-private to Ag-public), this change triggered these studies. These studies comply with San Joaquin County Development Title, Section 9-1105.2(d). Mr. Chris Van Groningen provided the preliminary information to complete these studies. 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 south of Manteca and east of Ripon. Sewer facilities from these cities will not expand to this area for several decades, if ever. Domestic water for the residential structure, and existing and future walnut packing/huller facilities, is provided by an on-site domestic well located to the north, or behind the Van Groningen residence. Domestic wastewater disposal for the residential structure and the existing and future commercial walnut processing facilities are managed by separate on-site septic systems. SSS§ 1.2. The proposed development is detailed in the Site Approval Application found in Appendix A. The Site Plan is also found in Appendix A. Currently, the property consists of the illustrated facility, surrounded by almond and kiwi orchards. The entire subject property is 20 ams. The project site is a total of seven of the 20 acres. The following is a summarization of the information collected to complete these studies and fulfill the requirements of EHD. The existing 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 illustrated on the Commercial Septic System Permit drawn by the contractor, Mr. Mike Fuller of Mike's Backhoe Service. • The on-site soils were analyzed for the ability to accept wastewater effluent flows, and to assess their characteristics within the existing filter bed leachfield area to mitigate nitrate impact. This was accomplished by soil physical and chemical testing. Physical testing included percolation testing. Chemical testing included analyses for the constituents that influence nitrate loading. 1