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RULE §336.730Near-Surface Land Disposal Facility Operation and Disposal Site Closure

(a) Wastes designated as Class A under §336.362(a) of this title (relating to Appendix E. Classification and Characteristics of Low-Level Radioactive Waste) shall be segregated from other wastes by placing the Class A wastes 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 shall not result in the failure to meet the performance objectives specified in §336.723 of this title (relating to Performance Objectives). This segregation is not necessary for Class A wastes if they meet the stability requirements in §336.362(b)(2) of this title.

(b) Wastes designated as containerized Class A, Class B, or Class C under §336.362(a) of this title or §336.702 of this title (relating to Definitions) shall be disposed of in the following manner:

  (1) within a reinforced concrete container and within a reinforced concrete barrier, or within containment structures made of materials technologically equivalent or superior to reinforced concrete;

  (2) in such a manner that the waste can be monitored and retrieved; and

  (3) so that the top of the waste is a minimum of five meters below the top surface of the cover or shall be disposed of with intruder barriers that are designed to protect against an inadvertent intrusion for at least 500 years.

(c) 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.

(d) Void spaces between waste packages shall be filled with earth or other material to reduce future subsidence within the fill.

(e) Waste shall be placed and covered in a manner that limits the radiation dose rate at the surface of the cover to levels that at a minimum will permit the licensee to comply with all provisions of §336.313 of this title (relating to Dose Limits for Individual Members of the Public) and §336.314 of this title (relating to Compliance with Dose Limits for Individual Members of the Public) at the time the license is transferred under §336.721 of this title (relating to Transfer of License to Custodial Agency).

(f) The boundaries and locations of each disposal unit shall be accurately located and mapped by means of 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.

(g) A buffer zone of land shall be maintained between any buried waste and the disposal site boundary and beneath the disposed waste. The buffer zone shall be of adequate dimensions to carry out environmental monitoring activities specified in §336.731(c) of this title (relating to Environmental Monitoring) and to take mitigative measures if needed.

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

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

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

Source Note: The provisions of this §336.730 adopted to be effective June 5, 1997, 22 TexReg 4588; amended to be effective January 8, 2004, 29 TexReg 150

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