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4.5 Compaction Testinw: Field tests for moisture content and relative compaction of the <br />fill soils shall be performed by the Geotechnical Consultant. Location and frequency of <br />tests shall be at the Consultant's discretion based on field conditions encountered. <br />Compaction test locations will not necessarily be selected on a random basis. Test <br />locations shall be selected to verify adequacy of compaction levels in areas that are <br />judged to be prone to inadequate compaction (such as close to slope faces and at the <br />fill/bedrock benches). <br />4.6 Frequency of Compaction Testing: Tests shall be taken at intervals not exceeding <br />2 feet in vertical rise and/or 1,000 cubic yards of compacted fill soils embankment. In <br />addition, as a guideline, at least one test shall be taken on slope faces for each <br />5,000 square feet of slope face and/or each 10 feet of vertical height of slope. The <br />Contractor shall assure that fill construction is such that the testing schedule can be <br />accomplished by the Geotechnical Consultant. The Contractor shall stop or slow down <br />the earthwork construction if these minimum standards are not met. <br />4.7 Compaction Test Locations: The Geotechnical Consultant shall document the <br />approximate elevation and horizontal coordinates of each test location. The Contractor <br />shall coordinate with the project surveyor to assure that sufficient grade stakes are <br />established so that the Geotechnical Consultant can determine the test locations with <br />sufficient accuracy. At a minimum, two grade stakes within a horizontal distance of <br />100 feet and vertically less than 5 feet apart from potential test locations shall be <br />provided. <br />5.0 Subdrain Installation <br />Subdrain systems shall be installed in accordance with the approved geotechnical report(s), the <br />grading plan, and the Standard Details. The Geotechnical Consultant may recommend <br />additional subdrains and/or changes in subdrain extent, location, grade, or material depending <br />on conditions encountered during grading. All subdrains shall be surveyed by a land <br />surveyor/civil engineer for line and grade after installation and prior to burial. Sufficient time <br />should be allowed by the Contractor for these surveys. <br />6.0 Excavation <br />Excavations, as well as over -excavation for remedial purposes, shall be evaluated by the <br />Geotechnical Consultant during grading. Remedial removal depths shown on geotechnical <br />plans are estimates only. The actual extent of removal shall be determined by the Geotechnical <br />Consultant based on the field evaluation of exposed conditions during grading. Where <br />fill -over -cut slopes are to be graded, the cut portion of the slope shall be made, evaluated, and <br />accepted by the Geotechnical Consultant prior to placement of materials for construction of the <br />fill portion of the slope, unless otherwise recommended by the Geotechnical Consultant. <br />LGC Valley, Inc. <br />General Earthwork and Grading Specifications <br />Pag i Council 18 — 964 10/3/2023 <br />