MIL-HDBK-1005/16
Table 16 (Continued)
Classifications of Injection Wells
Class
Description
IV
Wells used by generators of hazardous wastes or of
radioactive wastes, by owners or operators of hazardous
waste management facilities, or by owners or operators
of radioactive waste disposal sites to dispose of
hazardous wastes or radioactive wastes into or above a
formation which, within one-quarter mile of the well,
contains either an underground source of drinking water
or an exempted aquifer.
(Note: These types of injection wells are banned
nationwide.)
Injection wells not included in Class I, II, III,
V
or IV.
Class V wells, which are grouped by expected quality
of the injection fluid, include:
Group 1
a. Air-conditioning return flow wells used
to return to any aquifer the water used
for heating or cooling. An air-
conditioning supply well, heat pump, and
return flow well used to inject water
containing no additives into the same
permeable zone from which it was
withdrawn constitute a closed-loop
system.
b. Cooling water return flow wells used to
inject water previously used for cooling.
Group 2
a. Recharge wells used to replenish,
augment, or store water in an aquifer.
b. Saltwater intrusion barrier wells used to
inject water into a freshwater aquifer to
prevent the intrusion of saltwater into
the freshwater.
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