To operate an existing or new UIC well in Washington, the UIC
well must be registered and either rule authorized or receive a state waste
discharge permit from the department to operate, except as noted below, and the
following must be met:
(1) Class I UIC
wells are prohibited and must be decommissioned.
(2) Class II UIC wells must be registered and
have a state waste discharge permit issued by the department to operate, and
the following must occur:
(a) The well must be
reported to the department of natural resources in accordance with the
provisions of chapter
344-12 WAC General rules by any person who proposes to
conduct or is conducting a Class II injection well operation, as defined in
chapter
173-218 WAC;
(b) The
department of natural resources will perform review, evaluation, and approval
in accordance with the provisions of chapter
344-12 WAC General rules;
and
(c) The department of ecology
will process a Class II injection well application, in accordance with
applicable requirements as contained in 40 Code of Federal Regulations Parts
124 and 144 as published in Federal Register Volume 48, #64 (April 1, 1983) and
Part 146 as published in Federal Register Volume 45, #123 (June 24, 1980),
Volume 46, #166 (August 27, 1981) and Volume 47, #23 (February 3,
1982).
(3) Class III UIC
wells are prohibited and must be decommissioned.
(4) Class IV UIC wells that are not
prohibited (see WAC
173-218-040) must be registered
and approved under the Comprehensive Environmental Response, Compensation, and
Liability Act (CERCLA) or the Resource Conservation and Recovery Act (RCRA),
40 C.F.R.
144.13(a)(4)(c). Approved
Class IV UIC wells are wells used at:
(a)
CERCLA sites conducting a cleanup under an EPA order, consent order or consent
decree or where the cleanup is being conducted by EPA; or
(b) RCRA sites conducting a cleanup under an
order, agreed order or consent decree.
(5) Class V UIC wells, except as noted below,
must be registered and either rule authorized (see WAC
173-218-070) or receive a state
waste discharge permit issued by the department to operate including wells used
in independent remedial actions under MTCA. The following Class V wells do not
need a permit but do have to register with the UIC program if they are
authorized in accordance with:
(a) CERCLA
conducting a cleanup under an EPA order, consent order or consent decree or
where the cleanup is being conducted by EPA; and
(b) RCRA or MTCA conducting a cleanup under a
MTCA order, agreed order or consent decree or where the cleanup is being
conducted by the department.
