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D. The integrity and legibility of the labels shall be preserved during storage. <br /> 3.3 Earthwork <br /> A. Any earthen surface upon which the GCL is installed shall be prepared and compacted <br /> in accordance with the project specifications and drawings. The surface shall be <br /> smooth, firm, and unyielding, and free of: <br /> 1. Vegetation. <br /> 2. Construction Debris. <br /> 3. Sticks. <br /> 4. Sharp rocks. <br /> 5. Void spaces. <br /> 6. Ice. <br /> 7. Abrupt elevation changes. <br /> 8. Standing water. <br /> 9. Cracks larger than one-quarter inch (6 mm) in width. <br /> 10. Any other foreign matter that could contact the GCL. <br /> B. Subgrade surfaces consisting of granular soils or gravels may not be acceptable due to <br /> their large void fraction and puncture potential. In applications where the GCL is the <br /> only barrier, subgrade soils should have a particle-size distribution at least 80 percent <br /> finer than the #60 sieve (0.25 mm). In other applications, subgrade soils should range <br /> between fines and 1 inch (25 mm). In high-head applications (greater than 1 foot or <br /> 30.48 cm), CETCO recommends a membrane-laminated GCL (Bentomat CL or <br /> Bentomat CLT). <br /> C. Immediately prior to GCL deployment, the subgrade shall be final-graded to fill in all <br /> voids or cracks and then smooth-rolled to provide the best practicable surface for the <br /> GCL. At completion of this activity, no wheel ruts, footprints or other irregularities shall <br /> exist in the subgrade. Furthermore, all protrusions extending more than one-half inch <br /> (12 mm) from the surface shall either be removed, crushed or pushed into the surface <br /> with a smooth-drum compactor. <br /> D. On a continuing basis, the project CQA inspector shall certify acceptance of the <br /> subgrade before GCL placement. <br /> E. It shall be the installer's responsibility thereafter to indicate to the Engineer any change <br /> in the condition of the subgrade that could cause the subgrade to be out of compliance <br /> with any of the requirements listed in this Section. <br /> F. At the top of sloped areas of the job site, an anchor trench for the GCL shall be <br /> excavated or an equivalent runout shall be utilized in accordance with the project plans <br /> and specifications and as approved .by the CQA Inspector. When utilizing an anchor <br /> trench design, the trench shall be excavated and approved by the CQA Inspector prior to <br /> GCL placement. No loose soil shall be allowed at the bottom of the trench and no sharp <br /> corners or protrusions shall exist anywhere within the trench. <br /> 2870 iworbs Avenue Hoffman Estates,IL 60192 M,,� <br /> 847.851.1800 1800.5279948 <br /> www.CETCO.com <br />