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- June 13,2005' NOA Project Number: E05042A " Table 4. _ Y San Joaquin County Soil Survey Selected Soil Properties of On-Site Soils. Soil Depth' Unified Soil Classification Salini Name' (in) ' Soil Perme- Septic tank (in) mmhos Reaction ability and Map absorption _ -- Symbol. /cm PH (in/hr) fields Capay. 0-20: Clay: CH CL Cla 0 ° <2 6.6-8.4 0.06- Severe:peres Ir. m y,. -2/0 20-60: Clay, silty clay: CL,CH <2 6.6- 8.4 0.2 slowly slopes m - 118:1 0.06- 02 Capay = 0-20: C1ay:CH;-CL <¢ Cla= wet; 20-44: Clay,silty clay GH,CL C4 G.6-8.4 OAG-0.2 Severe:peres Y' 6.6-8.4 0.06-0.2 slowly 0-2% - 44-GO Silty clay loam,clay Ioaini CL <¢ 6.6-8.4 0.06-0.2 slapes,_121 - _ Ei 5olpo, 0-10 Clay loam:ML,CL <2 6.6-7.8 0.2-0.6 Severe:peres (" 0-2% 10-60. Silty clay loam,silty clay:ML,MH,CL, <4 7.4-8.4 0.06-0.2 slowly 1 1 `slopes, 156 CH - Vernalis -0-9 Clay loam:CL <2 6.G-8.4 0.2-0.6 Severe:peres Clay _ 9-47 _: Loam,At loam,clay loam: CL,-CL-NM <2 7.4-8.4 0.6-2.0 slowly - Loam 0- 47-60: Stratified sandy loam to silty clay loam: <2 7.9_8,4 0.6-2.0 `-_ 2%slopes CL,CL-ML m 268 Note:The table descriptions do not necessarily reflect site-specific soil properties. 5 1 . Soil Boring Locations l Four soil borings were drilled to a depth of approximately three and a balf feet on the Site. The soil' borings were later used as percolation test toles, see Plate 1 for the boring locations. 5:2 Soil Boring Dimensions The soil borings were approximately three and a half feet deep, as noted above, and were four inches r-1 in diameter.._ - 5 3 Soil Lithology Observed Generally, the soil encountered in the borings are similar to the soils reported by the San Joaquin County Soil Survey for the area (USDA 1992) v Tables 5 through 9 present the soil logs for-the boring's on the subject property, r