Then what is left would be encapsulated, preventing groundwater from entering, and covered with 7 to 12 feet of clean fill.

Contaminated soil was removed and clean fill brought in.

And in any case, they intend to cover the material with clean fill to keep it from seeping into the ocean.

Mr. Angarano told him, instead, to add a layer of clean fill and some grass.

In such a case, he said, all contaminated soil must be removed and replaced with clean fill.

When clean fill wasn't available locally, stone was carted into the city from as far away as Vermont.

The contaminated soil was removed in 1996 and replaced with clean local fill.

In the mid 1960s, the area was reclaimed with the help of clean fill.

The cost of clean fill also increased to $20 per tonne on that date.

However, the clean fill arrived too late in the year to plant grass seed.