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Geotechnical Engineering Investigation Page 22 of 24 <br /> New Residential Subdivision <br /> 2706 Pock Lane <br /> Stockton, CA 95205 <br /> March 30, 2021 CTE Job # 25-1097G <br /> 5.10 Drainage <br /> Foundation and concrete-slab-on grade performance depends greatly on how well the runoff <br /> waters drain from the site. This is true both during construction and over the entire life of the <br /> structure. The ground surface around structures should be graded so that water flows rapidly away <br /> from the structures without ponding. The surface gradient needed to do this depends on the <br /> landscaping type. <br /> Should excessive irrigation,waterline breaks, or unusually high rainfall occur, saturated zones and <br /> groundwater may develop. Consequently, the site should be graded so that water drains away <br /> readily without saturating the foundation or landscaped areas or cascading over slope faces. A <br /> potential source of water, such as water pipes, drains, and the like should be frequently examined <br /> for signs of leakage or damage. Any such leakage or damage should be repaired promptly. The <br /> project Civil Engineers should thoroughly evaluate the on-site drainage and make provisions as <br /> necessary to keep surface waters from affecting the site. <br /> 5.11 Construction Observation <br /> The recommendations provided in this report are based limited subsurface information observed, <br /> at locations, and within, exploratory borings performed for this project and preliminary concept <br /> design proposed construction as of the date of publication. The interpolated subsurface conditions, <br /> on which this report relies, should be checked in the field during construction to verify conditions <br /> described herein are as anticipated.Any changes which occur to preliminary information provided <br /> to this office as of the date of this publication, this office should be notified and afforded an <br /> opportunity to update information provided in this report. <br /> Recommendations provided in this report are based on the understanding and assumption that CTE <br /> will provide the observation and testing services for the project.All earthworks should be observed <br /> and tested to verify that grading activity has been performed according to the recommendations <br /> contained within this report. The project engineer should evaluate all footing excavations before <br /> reinforcing steel placement. To assure that the recommendations contained within this report are <br />