Saturday, June 5, 2010

Infiltration Basin or Class V Injection Well?

Class V wells use injection techniques different from those used by other types of injection wells. A typical Class V well is shallow and relies on gravity to drain or inject liquid waste into the ground. There are over 20 different Class V Well types. Well types can be subdivided based on how the wells are used. Sample categories include drainage wells used for storm water and agricultural irrigation, and domestic wastewater disposal wells.

Class V storm water drainage wells manage surface water runoff (rainwater or snow melt) by placing it below the ground surface. They are typically shallow disposal systems designed to infiltrate storm water runoff below the ground surface. Storm water drainage wells may have a variety of designs and may be referred to by other names including dry wells, bored wells, and infiltration galleries. Regardless of the common name used, a Class V well by definition is any bored, drilled, or driven shaft, or dug hole that is deeper than its widest surface dimension, or an improved sinkhole, or a subsurface fluid distribution system (an infiltration system with piping to enhance infiltration capabilities).

Construction and operation of a Class V stormwater drainage well requires a US EPA permit, and potentially additional State and local permits.

Caltha LLP provides expert consulting services to public and private sector clients nationwide to address Stormwater Permitting & Regulatory Support, Stormwater Pollution Prevention Plans (SWPPP), Stormwater Monitoring and Stormwater Training.

For further information contact Caltha LLP at or Caltha LLP Website

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