Glossary S
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.
Deutsch: Einzelliger Organismus / Español: organismo unicelular / Português: organismo unicelular / Français: organisme unicellulaire / Italiano: organismo unicellulare
Single-celled organism in the environmental context refers to any organism that consists of only one cell, performing all necessary functions within that single cell. These organisms are fundamental components of ecosystems, playing vital roles in ecological processes such as nutrient cycling, primary production, and decomposition.
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.
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.
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