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SPECIFICATIONS <br /> 1.0 SEDIMENTATION POND <br /> 1, 1 GENERAL <br /> 1. 1. 1 SEDIMENTATION POND SHALL BE CONSTRUCTED IN ACCORDANCE <br /> WITH THE CONSTRUCTION DRAWINGS AND SPECIFICATIONS , <br /> 1,2 SITE PREPARATION <br /> 1. 2 . 1 THE POND AREA HAS BEEN STRIPPED OF TOPSOIL AND VEGETATION , <br /> - ANY SOFT OR WEAK SOILS WHICH ARE LOCATED IN CRITICAL AREAS <br /> OF THE PONDS AND WHICH COULD, 'IN THE OPINION OF THE <br /> INSPECTING ENGINEER, INFLUENCE THE STABILITY OF .THE PONDS, <br /> SHALL BE REMOVED PRIOR TO CONSTRUCTION , <br /> 1. 3 CONSTRUCTION <br /> 1. 3. 1 EMBANKMENTS SHALL BE CONSTRUCTED FROM FINE-GRAINED ON-SITE <br /> COLLUVIAL SOILS , NO ROCKS LARGER THAN 6-INCHES MAXIMUM <br /> DIMENSION SHALL BE INCORPORATED INTO THE FILL. SOIL <br /> MATERIALS SHALL BE SEGREGATED AS NEEDED TO MEET MATERIAL <br /> SIZE AND COMPACTION REQUIREMENTS , NO ROOTS, STUMPS, <br /> ORGANIC OR OTHERWISE DELETEREOUS MATERIALS SHALL BE <br /> INCORPORATED INTO THE FILLS , <br /> -1. 3.2 FILL SHALL BE PLACED IN HORIZONTAL LAYERS NOT EXCEEDING TWELVE <br /> INCHES IN LOOSE THICKNESS AND COMPACTED BY ROUTING THE CON- <br /> STRUCTION EQUIPMENT UNIFORMLY OVER THE SURFACE OF THE FILL, <br /> 1 .3.3 COMPACTED EMBANKMENTS SHALL HAVE A DRY DENSITY OF AT LEAST <br /> 95 % OF THE MAXIMUM DRY DENSITY AS DETERMINED BY THE AMERICAN <br /> ASSOCIATION OF STATE HIGHWAYS AND TRANSPORTATION OFFICIALS <br /> (AASHTO) SPECIFICATION T99-74 ( "STANDARD PROCTOR") . <br /> 1. 3. 4 FILL PLACED AROUND PIPES, CULVERTS OR OTHER STRUCTURES IN- <br /> CLUDED WITHIN THE EMBANKMENT SHALL MEET THE SAME PLACEMENT <br /> AND COMPACTION CRITERIA AS ALL OTHER FILL, <br /> 1. 3,5 THE DISTRIBUTION OF MATERIALS IN EMBANKMENTS SHALL BE SUCH <br /> THAT THERE ARE NO LENSES, POCKETS OR STREAKS OF MATERIAL DIF- <br /> FERING SUBSTANTIALLY FROM THE SURROUNDING FILL. <br /> 1.3. 6 FILL SHALL NOT BE PLACED ON FROZEN SURFACES, NOR SHOULD SNOW, <br /> ICE, OR FROZEN MATERIAL BE INCORPORATED INTO THE FILL. <br /> 1. 4 MAINTENANCE <br /> 1.4 . 1 SEDIMENTATION PONDS SHALL BE ROUTINELY MAINTAINED DURING THE <br /> MINING OPERATIONS . VEGETATION GROWTH SHALL BE CUT WHERE NECES- <br /> SARY TO FACILITATE INSPECTIONS AND REPAIRS . DITCHES AND SPILL- <br /> WAYS SHALL BE CLEANED. <br /> 1.5 INSPECTIONS <br /> 1.5. 1 ALL EMBANKMENT FILLS SHALL BE INSPECTED DURING CONSTRUCTION <br /> AND OPERATION IN ACCORDANCE WITH THE SECTION 3 . 0 INSPECTIONS, <br /> OF THESE SPECIFICATIONS. <br /> 49 <br /> �I <br />