Section 601.250  Technical Requirements − Land Disposal Facility Operation and Disposal Site Closure

a)         Wastes designated as Class A pursuant to 32 Ill. Adm. Code 340.3070 shall be segregated from other wastes by placing in disposal units which are sufficiently separated from disposal units for the other waste classes so that any interaction between Class A wastes and other wastes will not result in the failure to meet the performance objectives of this Part.  This segregation is not necessary for Class A wastes if they meet the stability requirements in 32 Ill. Adm. Code 340.3080(b).

b)         Wastes designated as Class C pursuant to 32 Ill. Adm. Code 340.3070 shall be disposed of so that the waste is protected by a barrier of a minimum of 5 meters or must be disposed of with intruder barriers that are designed to protect against an inadvertent intrusion for at least 500 years.

c)         Except as provided in subsection (l) only waste classified as Class A, B, or C shall be acceptable for disposal.  All waste shall be disposed of in accordance with requirements of subsections (d) through (k).

d)         Wastes shall be emplaced in a manner that maintains the package integrity during emplacement, minimizes the void spaces between packages, and permits the void spaces to be filled.

e)         Void spaces between waste packages shall be filled with earth or other material to reduce future subsidence.

f)          Waste shall be placed and covered in a manner that limits the radiation dose rate at the surface of the cover to levels which at a minimum will permit the licensee to comply with all provisions of 32 Ill. Adm. Code 340.1050 at the time the disposal facility is transferred to the custody of a State or Federal agency pursuant to Section 601.160.

g)         The boundaries and locations of each disposal unit shall be accurately located and mapped by means of a land survey.  Disposal units shall be marked in such a way that the boundaries of each unit can be easily defined.  Three permanent survey marker control points, referenced to United States Geological Survey (USGS) or National Geodetic Survey (NGS) survey control stations, shall be established on the site to facilitate surveys.  The USGS or NGS control stations shall provide horizontal and vertical controls as checked against USGS or NGS record files.

h)         A buffer zone of land shall be maintained between disposed waste and the disposal site boundary.  The buffer zone shall be of adequate dimensions to carry out environmental monitoring activities specified in Section 601.260(d) and take mitigative measures if needed.

i)          Closure and stabilization measures as set forth in the approved site closure plan shall be carried out as each disposal unit is filled and enclosed.

j)          Active waste disposal operations shall not have an adverse effect on completed closure and stabilization measures.

k)         Only wastes containing or contaminated with radioactive materials shall be disposed of at the disposal site.

l)          Proposals for disposal of waste that is not otherwise acceptable for disposal because the waste form and disposal methods must be different, must be submitted to the Department for approval.