§11-23-04 - Classification of exempted aquifers and underground sources of drinking water.

§11-23-04 Classification of exempted aquifers and underground sources of drinking water.

(a) Upon request, and with concurrence of the director, the department shall review the aquifer designations. The aquifer designations shall be reviewed at least every three years. In its review, the department may amend the status of an aquifer in accordance with chapter 91, HRS. The criteria for exempting aquifers from underground source of drinking water (USDW) status is as follows:

(1) The aquifer does not currently serve as a source of drinking water; and

(2) The aquifer cannot now and will not in the future serve as a source of drinking water because of any of the following criteria:

(A) It is situated at a depth or location which currently makes recovery of water for drinking water purposes economically or technologically impractical; or

(B) It is so contaminated that it would be economically or technologically impractical to render that water fit for human consumption; or

(C) The total dissolved solids (TDS) concentration of the ground water is more than five thousand mg/L, and it is not reasonably expected to supply a public or private drinking water system.

(b) The UIC maps shall indicate exempted aquifers and USDW, in plan view, by use of a UIC line, and such maps are an integral part of this chapter. The department's•UIC maps, shall be the final authority for the identification of the aquifer boundaries on the land surface. Copies of the maps and this chapter are available for examination at an office of the department's environmental protection and health services division, the district health offices and other department offices on each island.

(c) Unless expressly exempted, all aquifers are considered to be USDW.

         [Eff. 7/6/84; am and comp NOV 12 1992 ) (Auth: HRS 5340E-2) (Imp: HRS §340E-2, 40 CFR §§144.7, 146.4 and 146.52)

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