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Guide Earthwork Specifications Page 3 IMPORT MATERIAL- Material obtained from off-site borrow areas. ASTM SPECIFICATIONS - The 2001 Edition of the American Society for Testing and Materials Standards.RELATIVE COMPACTION - The ratio, expressed as a percentage, of the in-place dry density of the Engineered Fill material to the maximum density of the same material as determined by ASTM Test Designation D1557-00. OPTIMUM MOISTURE CONTENT - The water content as determined by ASTM Test Designation D1557-00 that corresponds to the maximum dry density. CLEARING AND PREPARATION OF BUILDING PAD AND PAVEMENT AREAS General site clearance shall include the removal of surface vegetation,trees,pavements, fences,rubble, rubbish, soil stockpiles, and any other debris. Any underground pipes within two feet of original or final grade (whichever is lower) shall be removed. Existing loose fill materials as designated by the Soil Engineer shall be removed. Depressions shall be drained of water and cleaned out of all loose and/or saturated materials. Excavations resulting from the removal of the above items, as well as excavations, designated necessary by the Soil Engineer to remove any loose and/or saturated soil deposits, shall be sloped back to allow through passage of earthwork equipment, cleaned out to expose firmundisturbed soils, and backfilled with engineered fill in accordance with these specifications. Following clearance, all building pads, and the area five feet beyond, shall be over-excavated to a depth of two feet(2')relative to existing grades. The exposed excavation subgrade should be proof rolled in the presence of the Soil Engineer. Pavement areas shall be scarified to a depth of eight inches (8") and brought to a uniform near optimum moisture content. The scarified and moisture conditioned soils shall be recompacted in place to at least ninety percent(90%) relative compaction. Where necessary, grade may then be restored with engineered fill placed and compacted in accordance with these specifications. All excavations shall be performed to the lines and grades and within the tolerances specified on the project drawings. All overexcavation below the grades specified shall be backfilled at the Contractor's expense and shall be compacted in accordance with the specifications of this report. REQUIREMENTS FOR FILL MATERIAL All fill materials must be approved by the Soil Engineer prior to importation to the site. All imported fill j material shall be nonexpansive with a plasticity index of twelve(12)or less. These materials shall be soil or soil/rock mixtures which contain less than three percent(3%) by weight of organic matter or other deleterious substances. The fill material shall not contain rocks or rubble fi-agments over three inches(Y) in greatest dimension. On-site soils are suitable for use as engneered fill. I I i I I