You can add a layer of topsoil over the fill".
A layer of topsoil and various forms of vegetation are placed as a final cover.
A week later, no smell could be detected as the workers tamped down a final layer of topsoil.
The final cap for a completed landfill may also be covered with a layer of topsoil that can support vegetative growth.
In a cost-saving element, several hundred thousand cubic yards of earth dug up for the salt creek is to be used for the berm and as a layer of topsoil to cap lightly contaminated areas.
For more than 5,000 years, farmers have worked the land along the Nile and in the Nile Delta, the lotus-shaped plain north of Cairo where centuries of accumulated silt have produced a deep, rich layer of topsoil.
First, a thin layer of turf, over a 10-inch layer of topsoil, over a two-inch binding layer, over a six-inch drainage layer, over a final layer labeled "subsoil formation".
The so-called capping of the landfill, which involves placing a moisture barrier over the garbage mounds and a layer of topsoil onto that, is but the first step toward what politicians and the Sanitation Department say is a long-term plan to bring at least parts of the 3,000-acre 3,000-acrento propertyse as parkland.
Over dinner in Kigali with a handful of longtime political aides and deep-pocketed donors, he recited the price of soy ("It never exceeded $8, and now it's $16") and extolled its virtues as a miracle crop ("You can grow it with just a thin layer of topsoil").
