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face of the soil lifts. The top surface of the select fill layer shall be <br />scarified prior to placement of the topsoil layer. <br />3.2.2 Fabric Stabilized Lifts <br />3.2.2.1 Preparation <br />Before placing fabric, the surface on which it is to be placed shall be <br />prepared by removal of all stumps, boulders and other sharp objects. All <br />holes and large ruts shall be filled with material and compacted as shown on <br />the drawings. The surface shall be reviewed and accepted by the Contracting <br />Officer prior to placement of fabrics. A leveling layer of a minimum of 9 <br />inches shall be placed below the first soil lift as indicated on the <br />drawings. The leveling layer shall be wrapped with fabric to prevent <br />erosion of material. <br />3.2.2.2 Installation <br />The fabrics shall be installed as shown on the drawings. Installation shall <br />be overseen and approved by the Contracting Officer. The fabrics shall be <br />installed with a minimum embedment length as shown on the drawings. The <br />fabrics shall be taut; mechanical tightening may be required to remove slack <br />and provide containment of underlying soils as approved by the Contracting <br />Officer. Soils shall be compacted in accordance with drawings and Section <br />02300 EARTHWORK. <br />No equipment shall be operated on the top surface of geosynthetics without <br />permission from the Contracting Officer. Select fill shall be pushed out <br />over geosynthetics in an upward tumbling motion so that wrinkles in <br />geosynthetics do not fold over. Soil shall not be dropped directly onto <br />geosynthetics from a height greater than 3 feet. On slopes, select fill <br />shall be placed from the bottom of the slope upward. <br />3.2.2.3 Overlap <br />Fabric shall be unrolled directly on the prepared surface. Fabric shall be <br />joined with adjacent pieces of fabric by overlapping. Adjacent sections <br />shall be overlapped as shown on the Drawings, or a minimum of 12 inches. <br />Fabric overlaps shall be reviewed by the Contracting Officer prior to <br />covering with overlying materials. <br />3.2.2.9 Anchoring/Staking of COIR Fabric <br />The COIR fabric shall be staked with wooden stakes as shown on the design <br />drawings at 3 feet on center. Fabric edges shall be staked and anchored in <br />a key trench along all edges as indicated on the drawings. The fabric shall <br />be staked along all edges, overlaps and at intervals as shown on the <br />drawings and as approved by the Contracting Officer. <br />02340-9 <br />