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<br /> <br />The anchor trench shall be excavated by the Earthwork Contractor (unless otherwise <br />specified) to the lines and widths shown on the design drawings, prior to geomembrane or <br />bentonite blaril:et placement. <br />If the anchor trench is excavated in a clay liner susceptible to desiccation, no more than <br />the amount of trench required for the geomembrane or bentonite blanket to be anchored <br />in one day shall be excavated (unless otherwise specified) to minimize desiccation <br />potential of the anchor trench clay soils. <br />Slightly rounded comers shall be provided in the trench where the geomembrane and/or <br />bentonite blanket adjoins the trench so as to avoid sharp bends in the geomembrane or <br />bentonite blanket. No large rocks or clay lumps shall be allowed to underlie the <br />Qeomembrane or bentonite blanket in the anchor trench. <br />Backtilline of the anchor trench shall be conducted in accordance with Section 3.5. <br />3.2 Geosvnthetic Placement <br />Immediately prior to installation of either the designed geomembrane liner or bentonite <br />blanket, the surface shall be observed by ILP[ and the owner or the owner's <br />representative. The decision to repair cracks, if any, shall be made only by the Project <br />Ivlanager. The subgrade shall be walked by ILP[ and the Project T`4anager forjoint <br />approval. ILPI will sign acceptance of the surface condition of the subgrade. The <br />integrity of the underlying soil is the responsibility of the Owner/Earthwork Contractor. <br />(Please note Figure ~ for example ofPre-start Site Inspection Certificate of Acceptance). <br />Sub~rade Preparation Recommendations <br />No liner shall be placed on surfaces not previously found acceptable by the ILPI project <br />manager or his agent. <br />No sharp stones or other hazd objects that could penetrate the liner shall be present in the <br />top 1 inch of the surfaces to be covered. <br />Surfaces to be lined shall be smooth and free of all rocks, sharp stones, sticks, roots, sharp <br />objects, or debris of any kind. The surface should provide a firm, unyielding foundation <br />for the geosynthetic with no sudden sharp or abrupt changes in grade. <br />3.2.1 Field Panel Identification <br />A field panel is the unit area of geomembrane which is to be seamed in the field; i.e., a <br />field panel is a roll or a portion of roll cut in the field. <br />At the time of installation, the ILPI Field Supervisor shall give each field panel an <br />"identification code" (number or letter-number) consistent with the layout plan. (Panel <br />t~ <br />