9606 19TH AVE SE McDONALDS Geotech Report 2018-01-02 MF Import

GEOTECHNICAL ENGINEERING STUDY McDonald's Corporation June 9, 1995 E-6893-1 Page 8 inclination, or flatter, cannot be constructed, or if excavations greater than twenty (20) feet in depth are required, temporary shoring may be necessary. This shoring would help protect against slope or excavation collapse, and would provide protection to workmen in the excavation. If temporary shoring is required, we will be available to provide shoring design criteria, if requested. All permanent slopes should be inclined no greater than 2H:1 V. If this inclination cannot be maintained, we should be contacted to review the design and construction criteria. We also recommend that all cut slopes be examined by Earth Consultants, Inc. during excavation to verify that conditions are as anticipated. Supplementary recommendations can then be developed, if needed, to improve the stability, including flattening of slopes or installation of drainage. In any case, water should not be allowed to flow uncontrolled over the top of any slopes. The above information has been provided solely as a service to our client. Under no circumstances should the above information be interpreted to mean that this office is assuming responsibility for construction site safety or the contractor's activities; such responsibility is not being implied and should not be inferred. Site Drainage Groundwater seepage was not encountered in any of the test pits during the time our site study was performed. It does not appear that groundwater levels will present construction related problems while excavating the foundations. However, if groundwater seepage is encountered in any excavations during construction, the bottom of the excavation should be sloped to one or more shallow sump pits. The collected water can then be pumped from these pits to a positive and permanent discharge, such as a nearby storm drain. Depending on the magnitude of such seepage, it may also be necessary to interconnect the sump pits by a system of connector trenches. It is recommended that the appropriate locations of subsurface drains, if needed, be established during grading operations by this office, at which time the seepage areas, if present, may be more clearly defined. Earth Coneuhanta, Inc.