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r <br /> r <br /> (d) All underground or partially buried hazardous waste treatment <br /> or storage tanks will require secondary containment and/or a <br /> Department approved leak detection system upon permit renewal <br /> in December 1985. <br /> (e) Inspections <br /> The owner or operator shall inspect each hazardous waste <br /> storage tank in accordance with the written inspection schedule <br /> in the approved Operation Plan and Item 7, Part II, of this <br /> permit. <br /> (f) Closure <br /> At closure, all hazardous waste and hazardous waste residues <br /> shall be removed from tanks, discharge control equipment, and <br /> discharge confinement structures in accordance with the <br /> approved closure plan. <br /> (g) Ignitable or Reactive Waste <br /> (1) Ignitable or reactive waste shall not be placed in a <br /> tank, unless: <br /> (a) The waste is treated, rendered, or mixed before or <br /> immediately after placement in the tank so that the <br /> resulting waste, mixture, or dissolution of material <br /> is no longer ignitable or reactive and Item 9, Part <br /> III, of this permit is complied with; or <br /> (b) The waste is stored in such a way that it is pro- <br /> tected from any material or condition which may <br /> cause the waste to ignite or react; or <br /> (c) The tank is used solely for emergencies. <br /> (2) If the owner or operator stores ignitable or reactive <br /> waste in covered tanks, he shall comply with the National <br /> Fire Protection Association's buffer zone requirements <br /> for tanks, contained in Tables 2-1 through 2-6 of the <br /> "Flammable and Combustible Code--1981". <br /> (h) Incompatible Wastes <br /> (1) Incompatible wastes or materials shall not be placed in <br /> the same tank. <br /> (2) Hazardous waste shall not be placed in an unwashed tank <br /> which previously held an incompatible waste or material. <br /> -22- <br />