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7np�roject ODUCTION es my investigative findings regarding the Nitrate Loading Study conducted for the ed on the Title Page. This Study was 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. Mr. Vink is proposing to install a pre-manufactured home as a second unit dwelling on his new Lot Line Adjustment(LLA)parcel, which also contains his homesite. His home is four bedrooms, three baths, and the pre-manufactured home is to be three bedrooms, two baths, for a total of seven bedrooms. The property is 3.11 acres as illustrated on the attached Tentative Lot Line Adjustment Map and is surrounded by extremely sparse rural residential units and walnut and almond orchards. This land use is illustrated on the attached Google soil map photo. As noted on the attached SJC District Viewer map,the subject property is located 400 ft east from Chrisman Road. Within the text of this Report, Bolded Section (§)numbers are referenced at the beginning of an applicable Paragraph(s), or Appendix that corresponds with the EHD Nitrate Loading Study Requirements Checklist. Other portions of text may also apply to other sections of the Checklist. 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 leachfield. The requirement for conducting this test was confirmed by EHD prior to performing the test. • 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. An assessment of the characteristics of the on-site soils was made to discuss the mitigation of nitrate impact. • The nitrate loading to the on-site soils in combination with nitrate impact potential to the underlying groundwater from percolating effluent was quantified through generally accepted calculations. SOIL INFORMATION NLS§ 1.1. The attached UC Davis Soil Map indicates the Map Unit Name soil type is Vernalis clay loam, #268 and is 85% Capay clay with the remaining percentages listed as six other soil Page 1 of 12 Chesney Consulting