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Geotechnical Engineering Investigation Page 5 of 24 <br /> New Residential Subdivision <br /> 2706 Pock Lane <br /> Stockton, CA 95205 <br /> March 30, 2021 CTE Job # 25-1097G <br /> (ML). These materials are followed by a similar hard sandy clay (CL) to the maximum explored <br /> depths of 30 feet bgs. <br /> Since the earth material profile described above is generalized, the reader is advised to consult the <br /> Test Boring Log contained in Appendix B, if determination of the earth material conditions at a <br /> specific depth and location are desired. The boring logs contain a more detailed earth material <br /> description regarding color, earth material type, and Unified Soil Classification System (USCS) <br /> symbol. It should be noted that earth material conditions cannot be fully determined by test borings <br /> and earth material sampling and testing. Hence, unexpected earth material conditions might be <br /> encountered during construction. If soil deposits encountered during construction vary <br /> substantially from materials encountered during the investigation, appropriate recommendations <br /> will be made during construction. <br /> 4.3 Groundwater Conditions <br /> Observations of groundwater conditions were made in the test borings at the time of field <br /> exploration. Groundwater was not encountered in the boring locations. Based on information <br /> contained on the California SGMA Data Viewer site <br /> (https://sgma.water.ca.gov/web ig s/?appid=SGMADataViewer#gwlevels), ground water levels <br /> measured as groundwater contour lines near the site are typically between 39 to 57 feet bgs in the <br /> fall seasons and typically between 37 to 51 feet bgs in the spring seasons. <br /> Groundwater levels can fluctuate on a seasonal basis due to changes in precipitation, irrigation, <br /> pumping, etc., and might increase above the levels. With proper drainage groundwater is not <br /> expected to affect the proposed development. However, excavations below groundwater level will <br /> be impacted by seepage; therefore, we recommend grading and utility excavations be performed <br /> during dry-season when ground water levels are lowest. <br /> If construction is undertaken during wet-season/heavy-rains, saturated soils will not be expected <br /> to be acceptable for grading or compaction and could hamper progress due to limited equipment <br /> mobility and/or inability to achieve appropriate moisture content to achieve required soil <br />