part3:
3.5 Class V. Injection wells not included in Classes I, II,
III, or IV. Class V wells include:
A. air conditioning return flow wells used to return to the
supply aquifer the water used for heating or cooling in a heat pump;
B. cesspools, including multiple dwelling, community or regional
cesspools, or other devices that receive wastes, which have an open
bottom and sometimes have perforated sides. The UIC requirements do
not apply to single family residential cesspools nor to non-residential cesspools which receive solely sanitary wastes and have
the capacity to serve fewer than 20 persons per day;
C. cooling water return flow wells used to inject water
previously used for cooling;
D. drainage wells used to drain surface fluid, primarily storm
runoff, into a subsurface formation;
E. dry wells used for the injection of wastes into a subsurface
formation;
F. recharge wells used to replenish the water in an aquifer;
G. salt water intrusion barrier wells used to inject water into
a fresh water aquifer to prevent the intrusion of salt water into the
fresh water;
H. sand backfill and other backfill wells used to inject a
mixture of water and sand, mill tailings or other solids into mined
out portions of subsurface mines, whether what is injected is
radioactive waste or not;
I. septic systems used to inject the waste or effluent from a
multiple dwelling, business establishment, community, or regional
business establishment septic tank. The UIC requirements do not apply
to single family residential septic system wells, nor to non-residential septic system wells which are used solely for the disposal
of sanitary waste and have the capacity to serve fewer than 20 persons
per day;
J. subsidence control wells (not used for the purpose of oil or
natural gas production) used to inject fluids into a non-oil or gas
producing zone to reduce or eliminate subsidence associated with the
overdraft of fresh water;
K. stopes leaching, geothermal and experimental wells;
L. brine disposal wells for halogen recovery processes;
M. injection wells associated with the recovery of geothermal
energy for heating, aquaculture and production of electric power; and
N. injection wells used for in situ recovery of lignite, coal,
tar sands, and oil shale. |
