New Hampshire Code of Administrative Rules
Env - Department of Environmental Services
Subtitle Env-Wq - Water Quality and Quantity Programs
Chapter Env-Wq 400 - GROUNDWATER PROTECTION
Part Env-Wq 404 - UNDERGROUND INJECTION CONTROL REQUIREMENTS
Appendix D - Federal Definitions

Universal Citation: NH Admin Rules D
Current through Register No. 13, March 27, 2025

40 CFR 144.3

Fluid means any material or substance which flows or moves whether in a semisolid, liquid, sludge, gas, or any other form or state.

Injection well means a "well" into which "fluids" are being injected.

Well means: A bored, drilled, or driven shaft whose depth is greater than the largest surface dimension; or, a dug hole whose depth is greater than the largest surface dimension; or, an improved sinkhole; or, a subsurface fluid distribution system.

Well injection means the subsurface emplacement of fluids through a well.

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