7425 HARDESON RD BASE FILE 2016-01-01 MF Import

� � � � � � � 1 GEOTECHNICAL ENGINEERING STUDY Trace and Associates July 19, 2005 Excavations and Slopes E-11880 Page 11 The following information is provided solely as a service to our client. Under no circumstances should this information be i�terpreted to mean that ECI is assuming responsibility for construction site safety or the contractor's activities; such responsibility is not being implied and should not be inferred. In no case should excavation slopes be greater than the limits specified in local, state (WISHA) and federal (OSHA) safety regulations. Based on the information obtained from our subsurface exploration, the soils encountered at our test pit locations would be classified as Type C by OSHA/WISHA. Temporary cuts greater than 4 feet in height in Type C soils should be sloped at an inclination of 1.5H:1 V. Shoring will help protect against slope or excavation collapse and will provide , protection to workers in the excavation. If temporary shoring is required, we will be available to provide shoring design criteria. � Permanent cut and fill slopes should be inclined no steeper than 2H:1 V. Cut slopes should be observed by ECI during excavation to verify that conditions are as , anticipated. Supplementary recommendations can then be developed, if needed, to improve stability, including flattening of slopes or installation of surface or subsurface drains. � � Permanently exposed slopes should be seeded with an appropriate species of vegetation to reduce erosion and improve stability of the surficial layer of soil. Site Drainage � Ligl�t groundwater seepage was encountered at 6 feet below grade in Test Pit TP-6 at the time of our exploration (June 20051. In addition, we encountered increased soil � moisture starcing at approximately 8 feet below grade in Test Pit TP-3 and at 9 feet below grade in Test Pit TP-6. The observed seepage and increased soil moisture are likely indica�ive of perclied �roundwater. � � � � L'-arlh Consultanis. Inc.