Glossary S
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.
Deutsch: Himmel / Español: Cielo / Português: Céu / Français: Ciel / Italiano: Cielo
Sky in the environment context refers to the Earth's atmosphere as it appears from the ground, including its role in weather patterns, climate, and the distribution of light and air pollutants. The sky encompasses the layers of the atmosphere that are visible to the naked eye, which play a crucial role in environmental phenomena such as cloud formation, precipitation, and the scattering of sunlight.
Deutsch: gelöschter Kalk / Español: cal apagada / Português: cal hidratada / Français: chaux éteinte / Italiano: calce spenta
Slaked lime (also known as calcium hydroxide) is a chemical compound with the formula Ca(OH)₂. In the context of the environment, slaked lime is used for various purposes, including water treatment, soil stabilization, and pollution control, due to its alkaline properties and ability to neutralize acids.
Deutsch: Ruhezustand / Español: Modo de reposo / Português: Modo de repouso / Français: Mode veille / Italiano: Modalità sospensione
Sleep in the environmental context refers to a low-power state that electronic devices, machinery, or systems enter when they are not in active use but still remain on or partially operational. This mode is designed to reduce energy consumption while allowing the device to resume full functionality quickly when needed. The concept of sleep mode is crucial in minimizing energy waste and promoting energy efficiency in a wide range of devices, from computers to household appliances.
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: Klärschlamm-Entsorgung / Español: Eliminación de lodos / Português: Disposição de lodo / Français: Élimination des boues / Italiano: Smaltimento dei fanghi
Sludge disposal refers to the systematic management and final handling of residual sludge generated during wastewater treatment processes. This term encompasses a range of technical, regulatory, and environmental considerations aimed at minimizing ecological impact while ensuring compliance with legal frameworks. Sludge disposal is a critical component of modern sanitation infrastructure, directly influencing public health and ecosystem stability.
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.