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^ CORNERSTONE --- - L: EARTH GROUP 4.6.2 Method of Analysis .....................................................................................................8 4.6.3 Soil Properties .............................................................................................................8 Table 2: Summary of Soil Strength Properties (Total Stress Parameters) .........................9 4.6.4 Results of the Analysis ...............................................................................................9 Table 3: Results of Slope Stability Analyses ........................................................................9 4.6.5 Slope Deformation Analysis .......................................................................................9 4.7 Flooding-----------------------------------°------------------------°--------------°---------------------- 10 SECTION 5: CONCLUSIONS .....................................................................................................10 5.1 Undocumented Fills------------------------------------------------------------------------------------- 11 5.2 Moisture-Sensitive soils --------------°-------.....__....--°-----°----------------------°---°----- 11 5.3 Plans and Specifications Review ------------------------------------------------------------------- 11 5.4 Construction Observation and Testing ----------------------------------------------------------- 11 SECTION 6: EARTHWORK .......................................................................................................11 6.1 Site Demolition, Clearing and Preparation------------------------------------------------------- 11 6.1.1 Site Stripping .............................................................................................................11 8.1.2 Tree and Shrub Removal ..........................................................................................12 6.1.3 Abandonment of Existing Utilities ...........................................................................12 6.2 Removal of Existing Fills ------------------------------------------------------------------------------ 12 6.3 Temporary Cut and Fill Slopes----------------------------------------------------------------------- 13 6.4 Subgrade Preparation -----------------------------------------------------------------------------°--- 13 6.5 Subgrade Stabilization Measures------------------------------------------------------------------- 13 6.5.1 Scarification and Drying ...........................................................................................14 6.5.2 Removal and Replacement .......................................................................................14 6.5.3 Chemical Treatment ..................................................................................................14 6.6 Material for Fill -----------------------------------°--------------------------------------....------------- 14 6.8.1 Re-Use of On-site Soils .............................................................................................14 6.8.2 Potential Import Sources ..........................................................................................14 6.7 Compaction Requirements----------------------------------------------------------------------°---- 15 Table 4: Compaction Requirements .....................................................................................15 6.8 Trench Backfill-------------------------------------°----------------------------------------------------- 16 6.9 Permanent Cut and Fill Slopes--------•-------------------------------------------------------------- 16 Ponderosa Active Adult Community Page ii 132-2-1