(1) The operator of a drilling well must contain and dispose of all solid waste and
produced fluids that accumulate during drilling operations so as not to degrade
surface water, groundwater, or cause harm to soils. Said waste and fluids must
be disposed of in accordance with all applicable local, state and federal laws
(2) When a salt-based or oil-based drilling fluid is used to drill a well
located within a floodplain, as defined by ARM 36.15.101, or in irrigated
cropland, drilling waste and produced fluids that accumulate during drilling
operations must be disposed of off-site in a manner allowed by local,
state, and federal laws and regulations unless an alternative on-site
disposal method is approved in writing by the board administrator.
(3) The operator of a drilling well must construct, close, and restore any reserve pits
in a manner that will prevent harm to the soil and will not degrade surface
waters or groundwater. When a salt-based or oil-based drilling
fluid is used, the reserve pit must be lined with a synthetic liner approved by
the board administrator.
(4) Within 10 days after the cessation of drilling or completion operations, all
hydrocarbons must be removed from earthen pits used in association with
drilling or completion operations or such pits must be fenced, screened, and
netted. Such pits that contain water with more than 15,000 parts per million
total dissolved solids or salt-based drilling fluids must be fenced
within 90 days after the cessation of drilling and completion operations.
(5) Earthen pits used in association with drilling and completion operations must
not be used for the disposal of any additional fluids or materials after the
cessation of drilling and completion operations.
(6) All earthen pits used in association with drilling and completion operations must
be closed and the surface restored according to board specifications within one
year after the cessation of drilling operations. Upon written application by
the operator, an exception to the one-year pit closure requirement may be
granted in writing by the board administrator upon a showing that:
(a) no dumping or disposal of waste or fluids in the pit will occur; and
(b) delayed closure of the pit will not present a risk of contamination to soils or water or a hazard
to animals or