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D. If the Engineer shall determine that added moisture is required, water shall be applied by ' sprinkler tanks or other sprinkler systems, which will insure uniform distribution of the water over the area to be treated, distribution of the water over the area to be treated, and give complete and accurate control of the amount of water to be used. If too much water is added, the area shall be permitted to dry before compaction is continued. E. The Contractor shall supply all hose, piping, valves, sprinklers, pumps, sprinkler tanks, ' hauling equipment, and all other materials and equipment necessary to place the water in the fill in the manner specified. ' 3.03 BACKFILL AND FILL material, to prevent free water appearing on surface during or subsequent to compaction ' operations. 1. Remove and replace, or scarify and air dry, soil material that is too wet to permit 1. compaction to specified density. ' 2. Moisture content of soil shall be within 2% of the optimum. Under grassed areas, use satisfactory excavated or borrow material. 3. Soil material that has been removed because it is too wet to permit compaction, 3. but is otherwise satisfactory may be stockpiled or spread and allowed to dry. ' Assist drying by discing harrowing or pulverizing until moisture content is borrow material, or combination of both. Place shoulders along edges of subbase reduced to satisfactory value. ' course to prevent lateral movement with satisfactory excavated or borrow C. Place fill material in layers not more than 12- inches loose depth for material compacted by material. hand - operated tampers. Use manually operated sled -type vibratory compactors next to 4. structures and confined areas not accessible to heavy mechanical compaction equipment. D. If the Engineer shall determine that added moisture is required, water shall be applied by ' sprinkler tanks or other sprinkler systems, which will insure uniform distribution of the water over the area to be treated, distribution of the water over the area to be treated, and give complete and accurate control of the amount of water to be used. If too much water is added, the area shall be permitted to dry before compaction is continued. E. The Contractor shall supply all hose, piping, valves, sprinklers, pumps, sprinkler tanks, ' hauling equipment, and all other materials and equipment necessary to place the water in the fill in the manner specified. ' 3.03 BACKFILL AND FILL 06/05 02200 -4 03- 4138.B A. Place specified soil material in layers to required subgrade elevations: ' 1. In excavations, use satisfactory excavated or borrow material. 2. Under grassed areas, use satisfactory excavated or borrow material. 3. Under walks and pavements, use subbase material, or satisfactory excavated or ' borrow material, or combination of both. Place shoulders along edges of subbase course to prevent lateral movement with satisfactory excavated or borrow material. 4. Under steps, use subbase material. ' 5. Under building slabs, use drainage fill material. 6. Under piping and conduit, use subbase material where subbase is indicated under piping or conduit; shape to fit bottom 90 degrees of cylinder. 06/05 02200 -4 03- 4138.B