Glossary S

The Environmental Glossary. Letter S +++ Popular Articles: 'Soil', 'Social Accountability 8000', 'Substance'

Deutsch: Schluff / Español: Limo / Português: Sedimento / Français: Limon / Italiano: Limo

Silt in the environment context refers to fine-grained soil or sediment particles that are smaller than sand but larger than clay, typically between 0.002 and 0.05 millimeters in diameter. Silt is a crucial component of soil and aquatic sediments, known for its fertility and its role in affecting the physical properties of soils, including moisture retention and aeration. In aquatic environments, silt particles can be carried by water currents, playing an essential role in the formation of sedimentary deposits and influencing water quality and aquatic habitats.

A Single-Ply Roof is a flexible or semi-flexible pre-manufactured

A sinkhole is a Depression in the Earth's surface caused by dissolving of underlying limestone, salt, or gypsum. Drainage is provided through underground channels that may be enlarged

A Site Inspection (SI) is a technical phase of the Superfund process, following the Preliminary Assessment (PA), during which EPA gathers information (including sampling data) from a site needed to score the site using the Hazard Ranking System (HRS) to determine whether the site should be placed on the National Priorities List (NPL)

"Skin irritation" in the environmental context refers to the inflammatory response of the skin to various external irritants found in the environment. This condition can be caused by direct contact with chemical pollutants, allergens, plants (such as poison ivy or nettles), UV radiation, extreme temperatures, and particulate matter. Skin irritation can range from mild, causing symptoms like redness, itching, and rash, to severe, leading to blisters, pain, and even chemical burns in cases of exposure to highly toxic substances.

A Slotted Floor is a concrete floor design in which slats are positioned in the floor so that animal traffic can work Manure through the narrow openings (slots) between the slats and

Slotted Floors are a type of flooring developed in the late 1950's. Narrow open slots in the floor allow Manure and water to drain, keeping the floor dry and clean. Slotted floors for

Sludge in the environmental context refers to a thick, semi-solid, often viscous material that accumulates as a byproduct of various industrial, municipal, and agricultural processes. It is typically a mixture of water, solid particles, organic matter, and sometimes toxic substances. Proper management and disposal of sludge are essential to prevent environmental pollution and health hazards.

Deutsch: Schmelzen im Umweltkontext / Español: Fundición en el contexto ambiental / Português: Fundição no contexto ambiental / Français: Fusion dans le contexte environnemental / Italiano: Fonderia nel contesto ambientale

Smelting in the environmental context refers to the process of extracting a base metal from its ore by heating and melting, often using a reducing agent to decompose the ore and remove other elements as gases or slag. While smelting is a critical step in the production of metals such as iron, copper, and aluminum, it poses significant environmental challenges, including air and water pollution, greenhouse gas emissions, and energy consumption.

Deutsch: Smog / Español: Smog / Português: Smog / Français: Smog / Italiano: Smog /

A smog is a dense, discolored radiation fog containing large quanities of soot, ash, and gaseous pollutants such as sulfur dioxide and carbon dioxide, responsible for human respiratory ailments.

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