Requirements for fill material

The type and quality of materials which may be used for the filling of land shall be free of undecomposed organic matter, wood, tree stumps, roots or branches and other extraneous matter, and shall comply with the following:

(1)

Acceptable materials.

a.

Normally acceptable fill shall be a sand and rock mixture.

b.

Reinforced concrete masonry, rock and stone may be placed as fill; provided that no piece measures more than five feet in its largest dimension and no more than two feet in any other direction, with any encased reinforcing steel protruding not more than 18 inches. No fabricated metal products shall be placed as fill without specific written approval of the director of resilience and public works.

(2)

Unstable materials. Unstable soils such as muck and fine sand shall not be used as fill material without the written approval of the director of resilience and public works.

(3)

Stockpiled materials. Materials stockpiled at the site shall be placed and leveled within a reasonable period of time. If, in the opinion of the director of resilience and public works, stockpiled material is not placed and leveled without undue delay or is deemed to be unsafe or subject to shifting, the stockpiled material shall be placed and leveled immediately upon the order of the director of resilience and public works.

(4)

Finish fill. The top three feet of finish shall consist of material suitable for creating natural surface seepage. Marl clay rock-pit washings, high-clay-content bay bottom and other impervious soils, or soils of low porosity shall not be placed in such a manner as to cause a complete impervious seal.

(5)

Fill protection. Banks along the edges of a fill, not protected by bulkheading, shall be protected against excess erosion by riprapping or other containment acceptable to the director of resilience and public works.

(6)

Areas dedicated for public use. Portions of filled land to be dedicated as public rights-of-way or areas to be dedicated for public use shall comply with the following:

a.

No materials defined in paragraph (2) of this section shall be used as fill.

b.

Only those materials defined in paragraph (1) of this section shall be used as fill, except that in the top four feet no such fill material shall be larger than 12 inches in any direction.

c.

In areas dedicated for street purposes, fill materials to be used in the top two feet shall be limited to a sand and rock mixture and shall conform to the following:

1.

All rock used as fill in the top two feet shall pass through a six-inch ring.

2.

All rock used as a fill in the top 12 inches shall pass through a 3½-inch ring.

(Code 1967, § 27-4; Code 1980, § 29-4; Ord. No. 13792, § 1, 10-11-18)