SITE INFORMATION AND CORRESPONDENCE

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32 (1 ) Wastes may remain exposed after completion of closure; or (2) Short term, incidental access by the public or domestic livestock may pose a hazard to human health. (c) Post-closure use of the property on or in which hazardous waste remains after closure shall never be allowed to disturb the intearity of the final cover, liner(s) , or any other components_ of any containment system, or the function of the facility's monitoring systems , unless the owner or operator can demonstrate to the California Reoional Water Quality Control Board either in the post- closure plan or by petition, that the disturbance: (1 ) Is necessary to the proposed use of the property, and will not increase the potential hazard to human health or the environment; or (2) Is necessary to reduce a threat to human health or the environment. (d) The owner or operator shall provide pnst-closure care in accordance wit`. the approved post-closure plan for at least 30 years after the date of completing closure. However, the owner or operator may petition the California Regional Water Quality Control Board to allow some or all of the reouirements for post-closure care to be discontinued or altered before the end cf the 30-vear period. The petition shai ' include evidence demonstrating the secure nature of the facll ; ty that makes continuing the specified post-closure reeuiremen.t(s) unnecessary (e.c. , no detected leaks ano none likely to occur, characteristics of the waste , application o° advanced technology. or alternative disposal , treatment , or re-use technicues ). Alternately, the California Reoional Water Qualitv Control Board may require the owner or operator to continue one or more o` the post-closure care and maintenance reouiremen.te contained in the facility ' s post-closure plan fo- a speci`fed period of time. The California Regional Water Qual ; tv Control. Board may do this if they find there has beer noncompliance with any applicable standards or requirements , Or that such continuation is necessary to protect human healtr, or the environment. At the end of the specified period of time, the California Reoional Water Quality Control Board will determine whether to continue or terminate post-closure care and maintenance at the facility. The owner or operator me\ petition, the California Reoional Water Quality Control Boarc for an extension or reduction, of the pest-closure care period based on cause , These petitions will be considered by the California Regional Water Quality Control Board at the time the post-closure plan is submitted and at five-year intervals after the completion of closure.