David Grayless<p><a href="https://mastodon.social/tags/ElectricalResistanceHeating" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>ElectricalResistanceHeating</span></a> (ERH) is an intensive <a href="https://mastodon.social/tags/inSitu" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>inSitu</span></a> <a href="https://mastodon.social/tags/environmentalRemediation" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>environmentalRemediation</span></a> method that uses the flow of <a href="https://mastodon.social/tags/alternatingCurrent" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>alternatingCurrent</span></a> electricity to heat soil and groundwater and evaporate contaminants. Electric current is passed through a targeted soil volume between subsurface electrode elements. The resistance to electrical flow that exists in the soil causes the formation of heat; resulting in an increase in temperature until the boiling point of water at depth is reached.</p>