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Specification No . : RGS0024-87 Part II - SPECIFIC CONDITIONS Section 10 - Earthwork 10 . 6 . 4 Grading : 10 . 6 . 4. 1 General : Uniformly grade areas within limits of grading under this section , including adjacent transition areas . Smooth finished surface within specified tolerances , compact with uniform levels or slopes between points where elevations are shown, or between such points and existing grades . 10. 6 . 4. 2 Grading Outside Building Lines : Grade areas adjacent to building lines to drain away from structures and to prevent ponding . Finish surfaces free from irregular surface changes , and as follows : 10 . 6 . 4 . 2 . 1 Pavements : Shape surface of areas under pavement to line , grade and cross -section , with finish surface not more than 1 / 2 " above or below required subgrade elevation. 10 . 6 . 4 . 3 Grading Surface of Fill Under Slabs : Grade smooth and even , free of voids , compacted as specified , and to required elevation . Provide final grades within a tolerance of 1/ 2" when tested with a 10 ' straightedge . 10 . 6 . 4. 4 Compaction : After grading , compact subgrade surfaces to the depth and percentage of maximum density for each area classification . 10 . 6 . 5 Field Quality Control : Notify the Soils Engineer 4 working days prior to beginning excavation , trenching , and backfill and fill work. 10 . 6 . 6 Maintenance : 10. 6 . 6 . 1 Protection of Graded Areas : Protect newly graded areas from traffic and erosion . Keep free of trash and debris . Repair and reestablish grades in settled , eroded , and rutted areas to specified tolerances . 10 . 6 . 6 . 2 ReconditioninE Compacted Areas : Where completed compacted areas are disturbed by subsequent construction operations or adverse weather , scarify surface , reshape , and compact to required density prior to further construction. X-7