[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: 40CFR192.04]



[Page 20-21]

 

                   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 A_Standards for the Control of Residual Radioactive Materials 

                 from Inactive Uranium Processing Sites

 

Sec.  192.04  Corrective action.



    If the groundwater concentration limits established for disposal 

sites under provisions of Sec.  192.02(c) are found or projected to be 

exceeded, a corrective action program shall be placed into operation as 

soon as is practicable, and in no event later than eighteen (18) months 

after a finding of exceedance. This corrective action program will 

restore the performance of the system of disposal to the original 

concentration limits established under



[[Page 21]]



Sec.  192.02(c)(3), to the extent reasonably achievable, and, in any 

case, as a minimum shall:

    (a) Conform with the groundwater provisions of Sec.  192.02(c)(3), 

and

    (b) Clean up groundwater in conformance with subpart B, modified as 

appropriate to apply to the disposal site.



[60 FR 2866, Jan. 11, 1995]



Table 1 to Subpart A of Part 192--Maximum Concentration of Constituents 

                       for Groundwater Protection



------------------------------------------------------------------------

      Constituent concentration \1\                   Maximum

------------------------------------------------------------------------

Arsenic.................................  0.05

Barium..................................  1.0

Cadmium.................................  0.01

Chromium................................  0.05

Lead....................................  0.05

Mercury.................................  0.002

Selenium................................  0.01

Silver..................................  0.05

Nitrate (as N)..........................  10.

Molybdenum..............................  0.1

Combined radium-226 and radium-228......  5 pCi/liter

Combined uranium-234 and uranium-238 \2\  30 pCi/liter

Gross alpha-particle activity (excluding  15 pCi/liter

 radon and uranium).

Endrin (1,2,3,4,10,10-hexachloro-6,7-     0.0002

 exposy-1,4,4a,5,6,7,8,8a-octahydro-1,4-

 endo,endo-5,8-dimethanonaphthalene).

Lindane (1,2,3,4,5,6-                     0.004

 hexachlorocyclohexane, gamma insomer).

Methoxychlor (1,1,1-trichloro-2,2'-bis(p- 0.1

 methoxyphenylethane)).

Toxaphene (C10 H10 Cl6, technical         0.005

 chlorinated camphene, 67-69 percent

 chlorine).

2,4-D (2,4-dichlorophenoxyacetic acid)..  0.1

2,4,5-TP Silvex (2,4,5-                   0.01

 trichlorophenoxypropionic acid).

------------------------------------------------------------------------

\1\ Milligrams per liter, unless stated otherwise.

\2\ Where secular equilibrium obtains, this criterion will be satisfied

  by a concentration of 0.044 milligrams per liter (0.044 mg/l). For

  conditions of other than secular equilibrium, a corresponding value

  may be derived and applied, based on the measured site-specific ratio

  of the two isotopes of uranium.





[60 FR 2866, Jan. 11, 1995]