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'I' 111 / J "r ENVIRONMENTAL <br /> WATER RESOURCES <br /> CONSTRUCTION SERVICES <br /> Expect Excellence <br /> Project No. <br /> 4284.105.501 <br /> October 8,2015 <br /> Mr.Tim Quinn <br /> Greenbriar Homes Communities <br /> 43160 Osgood Road <br /> Fremont, CA 94530 <br /> Subject: Lund Ranch II <br /> Pleasanton, California <br /> EXPLORATION OF GRADED SLOPES <br /> Dear Mr. Quinn: <br /> As requested, an ENGEO geologist visited the site on September 4, 2015, to explore the slopes <br /> north of the existing barns and ranch complex. We supervised the excavation of four test pits at <br /> the locations shown on the exhibit prepared by Rugerri-Jensen Azar (RJA). The test pit <br /> excavations encountered a generally thin layer of disturbed soils interpreted to be fill. <br /> CONCLUSIONS <br /> The areas depicted on the RJA exhibit as "manmade slopes" appear to consist of old cuts or <br /> shallow fills that were created in association with construction of the ranch complex, barns and <br /> associated roadways. In particular, there is a clear slope break in the area north of the two barns <br /> that appears to be man-made. Test pits on the south-facing slope depicted on the RJA exhibit <br /> encountered a thin layer of fill overlying bedrock. Based on the test pits and slope morphology, it <br /> therefore appears that areas identified on the RJA exhibit are not natural slopes, and that the <br /> slope inclination and shape have been created by past grading associated with ranch construction <br /> and operations. <br /> If you have any questions or comments regarding this letter, please call and we will be glad to <br /> discuss them with you. <br /> :: ncoorated ly, �SS\ODWL 0£0 0 <br /> c` -Z•-JQ STUfOy�cs� Ai <br /> o. G Ne. ls4o/7 # CERTIFIED * / <br /> ENGINEERING <br /> Philip S. Stuecheli, CEG ry GEOLOGIS�\Q Raymond Skinner, CEG <br /> pss/rps/bvv �Tc of CALF° <br /> Attachment: Test Pit Logs <br /> 2010 Crow Canyon Place,Suite 250•San Ramon,CA 94583 •(925)866-9000• Fax(888)279-2698 <br /> www.engeo.com <br />