1716 EDGEMOOR LN 2016-01-01 MF Import

Roth Quality Homes JN 90016 January 25 , 1990 Page 3 conditions observed durinq excavation. The logs should be reviewed for specific subsurface information at the locations tested. r,uoyNDWATER No groundwate.r seepage was observed in the test pits. Groundwater levels can vary seasonally with rainfall and other factors . We anticipate that groundwater could be found between the near-surface slopewash soils and the underlying native silts , and in more permeable zones or fractures within the hard silts . CONCLUSIONS AND RECOMMENDATIONS GENERAL it is our o�inion that development of this site with a single- family residence is feasible from a geotechnical engineering standpoint. Improvements or new construction located on hillsides .require a certain amount of vic�ilance on the part of the inhabitants to insure that destabilizinc� cuts and fills are not made, that drainaqe features are maintained, and that accidental leakages of water or sewer lines are promptly reported and repaired. The proposed residence can be supported on one of the following foundation systems: * Conventional continuous and spread footings bearing on and keyed into the hard, native silts that were found below the slopewash and very stiff silt, or * Deep foundations consisting of drilled concrete piers embedded into the hard silt. existingmagroundatsurfacetmay be required� to expose btheW hard silt. Rockeries are not acceptable for use at this site due to the extensive thickness of the loose slopewash soils . All fill placed on the site should be retained by engineered retaining structures . The south foundation wall of the residence should be constructed to retain the north side of the driveway fill . GEOTECH CONSULTANTS , INC.