[Code of Federal Regulations]

[Title 40, Volume 24]

[Revised as of July 1, 2006]

From the U.S. Government Printing Office via GPO Access

[CITE: 40CFR192.11]



[Page 21-22]

 

                   TITLE 40--PROTECTION OF ENVIRONMENT

 

         CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED)

 

PART 192_HEALTH AND ENVIRONMENTAL PROTECTION STANDARDS FOR URANIUM AND 

THORIUM MILL TAILINGS--Table of Contents

 

Subpart B_Standards for Cleanup of Land and Buildings Contaminated with 

  Residual Radioactive Materials from Inactive Uranium Processing Sites

 

Sec.  192.11  Definitions.



    (a) Unless otherwise indicated in this subpart, all terms shall have 

the same meaning as defined in subpart A.

    (b) Land means any surface or subsurface land that is not part of a 

disposal site and is not covered by an occupiable building.

    (c) Working Level (WL) means any combination of short-lived radon 

decay products in one liter of air that will result in the ultimate 

emission of alpha particles with a total energy of 130 billion electron 

volts.

    (d) Soil means all unconsolidated materials normally found on or 

near the surface of the earth including, but not limited to, silts, 

clays, sands, gravel, and small rocks.

    (e) Limited use groundwater means groundwater that is not a current 

or potential source of drinking water because (1) the concentration of 

total dissolved solids is in excess of 10,000 mg/l,



[[Page 22]]



or (2) widespread, ambient contamination not due to activities involving 

residual radioactive materials from a designated processing site exists 

that cannot be cleaned up using treatment methods reasonably employed in 

public water systems, or (3) the quantity of water reasonably available 

for sustained continuous use is less than 150 gallons per day. The 

parameters for determining the quantity of water reasonably available 

shall be determined by the Secretary with the concurrence of the 

Commission.



[48 FR 602, Jan. 5, 1983, as amended at 60 FR 2866, Jan. 11, 1995]