Arizona Administrative Code › Title 18 - ENVIRONMENTAL QUALITY › Chapter 16 - DEPARTMENT OF ENVIRONMENTAL QUALITY - WATER QUALITY ASSURANCE REVOLVING FUND PROGRAM › Article 4 - REMEDY SELECTION › Section R18-16-401 - Definitions

Current through Register Vol. 30, No. 28, July 12, 2024
The following definitions shall apply in this Article, unless
				  the context otherwise requires:
"Alternative remedy" means a combination of remedial
				  strategies and remedial measures different from the reference remedy that is
				  capable of achieving remedial objectives. The alternative remedies are compared
				  with the reference remedy for purposes of selecting a proposed remedy at the
				  conclusion of the feasibility study.
"Comparison criteria" means risk, cost, benefit, and
				  practicability, as those terms are described in
				  R18-16-407(H)(3).
				  "Community involvement area" has the same meaning as defined in A.R.S. §
									49-281(3).
"Contaminant of concern" means a hazardous substance that
				  results from a release and that has been identified by the Department as the
				  subject of remedial action at a site.
"Hazardous substance" has the same meaning as in A.R.S.
				  §
									49-281(8).
"Nonrecoverable costs" has the same meaning as in A.R.S.
				  §
									49-281(9).
"Proposed remedy" means a combination of remedial strategies
				  and remedial measures which, as a whole, is capable of achieving remedial
				  objectives that is identified at the conclusion of a feasibility study and is
				  incorporated in the proposed remedial action plan.
"Reference remedy" means a combination of remedial strategies
				  and remedial measures which, as a whole, is capable of achieving remedial
				  objectives. The reference remedy is compared with the alternative remedies for
				  purposes of selecting a proposed remedy at the conclusion of the feasibility
				  study.
"Remedial measure" means a specific action taken in
				  conjunction with remedial strategies as part of the remedy to achieve one or
				  more of the remedial objectives. For example, remedial measures may include
				  well replacement, well modification, water treatment, provision of replacement
				  water supplies, and engineering controls.
"Remedial objective" means the goal, as established through
				  the process in
				  R18-16-406, to be achieved by a
				  remedy selected under this Article. Remedial objectives include the following
				  elements:
Protecting against the loss or impairment of identified uses
				  of land and waters of the state;
Restoring, replacing, or otherwise providing for identified
				  uses of land and waters of the state;
Time-frames when action is needed to protect against or
				  provide for the impairment or loss of the use; and
The projected duration of the action needed to protect or
				  provide for the use.
"Remedial strategy" means one or a combination of the six
				  general approaches described in
				  R18-16-407(F)
				  which may be employed in conjunction with remedial measures as part of the
				  remedy to achieve the remedial objectives.
"Remedy" has the same meaning as in A.R.S. §
									49-281(13).
"Site-specific human health risk assessment" means a
				  scientific evaluation of the probability of an adverse effect to human health
				  from exposure to specific types and concentrations of contaminants at or from a
				  site. A site-specific human health risk assessment contains four components:
				  identification of potential contaminants; an exposure assessment; a toxicity
				  assessment; and a risk characterization.
"Site registry" or "registry" means the registry of scored
				  sites maintained by the Department under A.R.S. §
									49-287.01(D).
"Vadose zone" has the same meaning as in A.R.S. §
									49-201.
"Water provider" means the owner or operator of a public
				  water system, an agricultural improvement district, or an irrigation and water
				  conservation district.