Section 11-264-18 - Location standards(a) Seismic considerations: (1) Portions of new facilities where treatment, storage, or disposal of hazardous waste will be conducted must not be located within 61 meters (200 feet) of a fault which has had displacement in Holocene time.(2) As used in paragraph (a)(1): (i) "Fault'' means a fracture along which rocks on one side have been displaced with respect to those on the other side.(ii) "Displacement'' means the relative movement of any two sides of a fault measured in any direction.(iii) "Holocene'' means the most recent epoch of the Quaternary period, extending from the end of the Pleistocene to the present.(b) Floodplains: (1) A facility located in a 100-year floodplain must be designed, constructed, operated, and maintained to prevent washout of any hazardous waste by a 100-year flood, unless the owner or operator can demonstrate to the director's satisfaction that: (i) Procedures are in effect which will cause the waste to be removed safely, before flood waters can reach the facility, to a location where the wastes will not be vulnerable to flood waters; or(ii) For existing surface impoundments, waste piles, land treatment units, landfills, and miscellaneous units, no adverse effects on human health or the environment will result if washout occurs, considering: (A) The volume and physical and chemical characteristics of the waste in the facility;(B) The concentration of hazardous constituents that would potentially affect surface waters as a result of washout;(C) The impact of such concentrations on the current or potential uses of and water quality standards established for the affected surface waters; and(D) The impact of hazardous constituents on the sediments of affected surface waters or the soils of the 100-year floodplain that could result from washout.(2) As used in paragraph (b)(1): (i) "100-year floodplain'' means any land area which is subject to a one percent or greater chance of flooding in any given year from any source.(ii) "Washout'' means the movement of hazardous waste from the active portion of the facility as a result of flooding.(iii) "100-year flood'' means a flood that has a one percent chance of being equalled or exceeded in any given year.(c) Salt dome formations, salt bed formations, underground mines and caves. The placement of any non-containerized or bulk liquid hazardous waste in any salt dome formation, salt bed formation, underground mine or cave is prohibited.[Eff 6/18/94; comp] (Auth: HRS §§ 342J-4, 342J-31, 342J-34, 342J-35) (Imp: 40 C.F.R. §264.18 )