4945 OCEAN AVE 2018-01-02 MF Import

GEOTECHNICAL ENGINEERING STUDY Mr. Rick Remsing E-10558 May 5, 2003 Page 2 Subsurface Subsurface conditions were evaluated by excavating six test pits at the approximate locations shown on Plate 2. Please refer to the Test Pit Logs, Plates A2 through A7, for a more detailed description of the conditions encountered at each location explored. A description of the field exploration methods is included in Appendix A. The following is a generalized description of the subsurface conditions encountered. The test pits indicate the site is immediately underlain by a six-inch thick layer of topsoil and rootmass. This soil unit is characterized by its brown to black color and the presence of organic material. This soil layer is not considered suitable for use in support of foundations, slabs -on -grade, or pavements. In addition, it is not suitable for use as a structural fill, nor should it be mixed with material to be used as structural fill. Underlying the topsoil the native soils consist of medium dense silty sand and poorly graded sand with silt underlain by dense silt (Unified Classification SM, SP-SM and MU. The silt layer was encountered in Test Pits TP1, TP-2 and TP-3 at eight to thirteen (13) feet below the ground surface. Groundwater Slight groundwater seepage was encountered in Test Pit TP-3 at thirteen (13) feet and very slight seepage was encountered at tour feet in Test Pit TP-4. The contractor should be made aware that groundwater is not static. There will be fluctuations in the level depending on the season, amount of rainfall, surface water runoff, and other factors. Generally, the water level is higher and seepage rate is greater in the wetter winter months (typically October through May). Earth Consultants, Inc.