After removal of topsoil, areas to receive fill shall be thoroughly
rolled, and any soft spots disclosed by rolling shall be excavated
and the unsuitable material removed and disposed of in a waste area.
The excavated area shall be filled with suitable fill material approved
by the municipality and recompacted. Suitable fill material shall
be spread in layers of not more than eight inches (loose) over the
full area of the fill, and compacted to the required density by the
use of compaction equipment. All fill material shall be compacted
to not less than 95% of its maximum dry weight density at its optimum
moisture content, plus or minus 2%, as determined by ASTM D698, under
roadways, shoulders, driveways, curbs, sidewalks, gravel and sand
parking areas and not less than 90% in yards, fields and sand areas.
When the material is too coarse to satisfactorily use these methods,
compaction will be determined by the municipality based on nonmovement
of the material under the compaction equipment.