R315-264-18. Location Standards

  (a) Seismic considerations.

  (1) Portions of new facilities where treatment, storage, or disposal of hazardous waste will be conducted shall not be located within 61 meters (200 feet) of a fault which has had displacement in Holocene time. Procedures for demonstrating compliance with this standard in part B of the permit application are specified in Subsection R315-270-14(b)(11). Facilities which are located in political jurisdictions other than those listed in appendix VI of Rule R315-264, are assumed to be in compliance with this requirement.

  (2) As used in Subsection R315-264-18(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 shall 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, provided that the facility where the waste is moved is a permitted hazardous waste disposal facility or a facility in interim status; 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 Subsection R315-264-18(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 noncontainerized or bulk liquid hazardous waste in any salt dome formation, salt bed formation, underground mine or cave is prohibited, except for the Department of Energy Waste Isolation Pilot Project in New Mexico.