§ 8.1. Site grading.

8.1.1 General requirements.

1)

Grading shall be done in accordance with the lines and grades shown on the approved construction plans.

2)

Embankments shall be placed in uniform layers not to exceed a compacted thickness of six inches per layer and shall be compacted to a density of 95 percent of the maximum laboratory dry weight per cubic foot as determined by AASHTO Method T-99 in all areas where structures, parking lots and drives, streets, and utilities are to be placed. All other embankments are to be compacted to at least 85 percent.

3)

The maximum slopes for cut or fill shall be 2:1 (two feet of horizontal run for each foot of rise or fall). The depth of cut referred to herein shall be the maximum cut or fill occurring in any one section of cut or fill. The slope of cut or fill shall be uniform throughout for each section of cut or fill except when the development control committee approves benching. When a cut is made in rock that requires blasting, the slope may be steeper if pre-splitting is employed and upon submission of a geotechnical report which substantiates the integrity of the rock in the steeper condition, subject to the review and approval of the development control committee.

4)

While most soils in the area can be safely stabilized at a 2:1 slope, some soils exhibit a low shearing resistance and a low cohesiveness. These soils typically are micaceous silts and sandy soils with little or no clay. If the 2:1 slope shows evidence of shearing, noncohesiveness, sliding, or inability to maintain compaction, the slope shall be stabilized at 3:1 or by using such mechanical methods as needed (such as retaining walls or "grow mats" stapled in place) to maintain slope, height and integrity.