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May 25, 2004
<br /> ` NOA Project Number: E04061A
<br /> Page 8
<br /> Table 4.
<br /> -San Joaquin County Soil Survey-
<br /> Selected Soil Properties of On-Site Soils.
<br /> Soil Name Depth Unified Soil Classification Salinity Soil Perme- Septic tank
<br /> and Map (in) rumbas Reaction ability absorption
<br /> Symbol /cm pH in/hr fields
<br /> Alamo clay, 0-12 Clay,CH. <2 6.1-7.8 0.06-0.2 Severe:
<br /> 0-2% 12-33 Clay,CH. <2 6.6-8.4 <0.06 cemented
<br /> slopes, 102. 33-60 Indurated. --- --- --- pan,
<br /> wetness.
<br /> Jahant 0-5 Loam,ML. <2 6.1-7.3 0.6-2.0 Severe:
<br /> Loam,0-2% 5-31 Loam,clay loam,CL-ML,CL. <2 6.1-7.3 0.6-2.0 peres
<br /> slopes, 182. 31-49 Clay,clay loam,CH,CL. <2 6.1-7.3 <0.06 slowly.
<br /> 49-53 Cemented. --- --- ---
<br /> 53-60 Indurated. --- --- ---
<br /> Jahant 0-5 Loam,ML. <2 6.1-7.3 0.6-2.0 Severe:
<br /> Loam,2-8% 5-31 Loam,clay loam,CL-ML,CL. <2 6.1-7.3 0.6-2.0 peres
<br /> slopes, 183. 3149 Clay,clay loam,CH,CL. <2 6.1-7.3 <0.06 slowly.
<br /> 49-53 Cemented. -- --- ---
<br /> 53-60 Indurated. - --- ---
<br /> Redding 0-7 Gravelly loam, SC,SC-SM, <2 5.1-6.5 0.6-2.0 Severe:
<br /> gravelly GC,GM-GC. cemented
<br /> loam,2-8% 7-16 Gravelly loam,gravelly clay <2 5.1-6.5 0.2-0.6 pan.
<br /> slopes,220. loam,CL,CL-ML,GC,GM-GC.
<br /> 16-22 Clay,clay loam,CH,CL. <2 5.1-6.5 <0.06
<br /> 22-60 Indurated. - --
<br /> San Joaquin 0-13 Sandy loam,SM. <2 5.6-6.5 0.6-2.0 Severe:
<br /> sandy loam, 13-20 Clay loam,clay,CL. <2 6.1-7.8 <0.06 cemented
<br /> 0-2% 20-60 Indurated. --- --- --- pan,peres
<br /> slopes,236. slowly.
<br /> San Joaquin 0-10 Sandy loam, SM. <2 5.6-6.5 0.6-2.0 Severe:
<br /> sandy loam, 10-20 Clay loam,clay,CL. <2 6.1-7.8 <0.06 cemented
<br /> 2-5% 20-60 Indurated. -- --- --- pan,peres
<br /> sloes,237. slowly.
<br /> Note: The table descriptions do not necessarily reflect site-specific soil properties.
<br /> The Soil Survey indicated that the on-site soil unit is composed of loam, clay, clay loam, gravelly
<br /> loam, and sandy loam soils. Clay and clay loam soils typically exhibit poor percolation
<br /> properties and are often problematic for shallow trench septic systems.
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