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INTRODUCTION This report issues my investigative findings regarding the Nitrate Loading and Soil Suitability Studies conducted for the project referenced on the Title Page. These Studies were required because of new regulations enacted by the San Joaquin County Environmental Health Department (EHD)to determine if nitrate loading standards would be exceeded when new improvements occur on a subject Parcel. Specifically, concerns regarding nitrate loading could potentially occur when second unit dwellings are constructed on comparatively small parcels. SSS§ 1.1, 1.2. Mr. Seth Heatwole is proposing to construct a residential structure as a second unit dwelling on a Parcel owned by his Father. His Father's home is three bedrooms, two baths, and the second unit dwelling will also be three bedrooms, two baths, for a total of six bedrooms. SSS§ 1.3. The property is 1.46 acres as illustrated on the Assessors Parcel Map and is surrounded by almond orchards, rural residential structures, and a greenhouse operation to the north. 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, but may not necessarily be referenced. The following summarizes the investigative parameters included to complete this report: • A percolation test was performed for this study in the proposed location of the future filter bed disposal field. Test results indicate permeable soil. • Soil chemical testing was conducted on a sample retrieved from the percolation test boring. Physical testing of the soil sample included texture particle size analysis for sand, silt and clay content, and chemical testing analyses for the constituents that influence nitrate loading. • The nitrate loading to the on-site soils in combination with nitrate impact potential to the underlying groundwater from percolating effluent was found to be excessive by EHD Standards. Nitrate impact mitigation measures have been described in this report. SOIL INFORMATION NLS§ 1.1. The UC Davis Soil Web Map indicates the Map Unit Name to be a Tinnin loamy coarse sand, 0 to 2 percent slopes (#255). As referenced, a soil sample was retrieved from the 38- inch deep perc test boring for physical and chemical analyses. Page -1JJ - Chesney Consulting