AIR STRIPPING

A treatment system that removes or “strips” VOCs from contaminated groundwater or surface water as air is forced through the water, causing the compounds to evaporate. Often the compounds are then captured using air filters.

AIRSHED

A geographical area where local topography and meteorology limit the dispersion of pollutants away from the area.

ALBEDO

The fraction of solar radiation reflected by a surface or object, often expressed as a percentage. Snow-covered surfaces have a high albedo, the surface albedo of soils ranges from high to low, and vegetation-covered surfaces and the oceans have a low albedo. The Earth’s planetary albedo changes mainly through varying cloudiness and changes in snow, […]

ALGAE

Plant-like organisms which grow in water (green scum).

ALGAL BLOOM

The rapid proliferation of passively floating, simple plant life, such as blue-green algae, in and on a body of water.

ALGORITHMIC HEDGING

Algorithmic hedging is the practice of executing risk-reducing trades via an algorithm, typically used by a market-maker. These algorithms seek to strike a balance between retaining as much bid/offer spread as possible and limiting the amount of residual risk on the market-maker’s books. Perfect hedges will wipe out the market-maker’s profit, but loose hedges may […]

ALGORITHMIC PRICING

Algorithmic pricing is the practice of calculating bids and offers for a traded product via an algorithm. The inputs to the algorithm can vary. In addition to other bids and offers available in the market, an algorithm may factor in the depth of liquidity available at those prices (to anticipate the impact of a new […]

ALKALI

1) any strongly basic substance capable of neutralizing an acid that is soluble in water. 2) refers to soluble salts in soil, surface or ground water.