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15 November 2019 AdvancedGeo AGE Project No. 19-4912 Environmental Page 8 of 14 the parcel was calculated; the Percolation Test Rate Field Sheet is provided in Appendix B. 6.5. COMPLETED PERCOLATION TEST FORM After completion of the successful test, the EHD inspector reviewed the field data and signed the required EHD Percolation Test Rate form. Field measurements recorded during the test are included on the Percolation Test Rate Field Sheet provided in Appendix B. 6.6. POTENTIAL PROBLEMS PREDICTED On site soils within the shallow percolation test hole demonstrated adequate percolation rates. Although the percolation rate was fast, the rate was still within the range for a standard septic system for this location in the county as outlined in the EHD OWTS Standards. 6.7. PERCOLATION TEST FINDINGS The shallow percolation test performed provided a satisfactory percolation test rate. The percolation rate of 2.60 minutes per inch was calculated from data collected during the 1- hour percolation test; the smallest reading over the 1-hour period was used to calculate the percolation rate. The use of the existing and proposed septic systems should follow the San Joaquin County On-site Wastewater Treatment Standards. 7.0. CHEMICAL AND PHYSICAL PROPERTIES OF SOIL Soil chemical properties were supplied by regionally sourced material for the surrounding area. 7.1. CHEMICAL AND PHYSICAL PROPERTIES OF SITE SOILS The dominant soil composition in the general area of the property was inferred from information provided by the United States Department of Agriculture's Soil Geographic Database (USDASGD). The USDASGD soil survey indicates the soil type for the property is predominantly composed of Veritas fine sandy loam having 0 to 2 percent slopes (#266). The Veritas fine sandy loam land complex is composed of alluvium derived from mixed rock sources. Soils are described as moderately well drained; with a very low permeability; and salinity of less than 4.0 millimhos per centimeter (mmhos/cm). Sands in the Veritas fine sandy loam complex typically have the same chemical properties between surface grade and 54 inches bsg.