N.J. Admin. Code § 7:28-12.9

Current through Register Vol. 56, No. 21, November 4, 2024

Section 7:28-12.9 - Minimum remediation standards for TENORM and source material contamination

(a) For radioactive contamination, the requirements of N.J.A.C. 7:28-12.8 shall be considered to be met for a specific radionuclide if:

1. Where only one radionuclide adds to the radioactive contamination of the site, the incremental concentration of the radionuclide above the natural background radionuclide concentration does not exceed the value in Table 1A, 1B (for unrestricted use), 2A, 2B (for limited restricted use), 3A, or 3B (for restricted use) below;

Allowed Incremental Derived Concentration Guideline Level of Individual Radionuclides in Soils

Data in image

[LESS THAN](1)[GREATER THAN] The allowed Incremental Concentrations are added to the natural background radionuclide concentration to obtain the absolute value of the allowed radionuclide concentration following site remediation.

[LESS THAN](2)[GREATER THAN] These allowable concentrations may however, further be limited by the chemical toxicity of uranium. Applicants should inquire with NJDEP's Site Remediation Program for the additional applicable chemical cleanup standards for uranium.

[LESS THAN](3)[GREATER THAN] When more than one nuclide is present, use the Radium-226 Table in Appendix A, incorporated herein by reference, for applying the sum of the fractions rule. Then use whatever number is more restrictive for radium-226, the value in Tables 1A through 3B or the value derived using the sum of the fractions rule.

2. Where more than one radionuclide contaminant is present at the site, their concentrations meet the sum of the fractions as described below:

Sum of	CA[i]	< 1
--------
C[i]
where:
CA[i]=the incremental concentration of radionuclide i at the
site, and
C[i]=the incremental allowed concentration of radionuclide i from
Table 1A, 1B, 2A, 2B, 3A, or 3B above, if it were the only remaining
radionuclide at the site; and

3. Natural background radionuclide concentration shall be established by the methods presented in the Multi Agency Radiation Survey and Site Investigation Manual (MARSSIM), NUREG-1575, EPA 402 R-97-018, and any subsequent revisions thereto, or as discussed in Chapter 12 of the Department's Field Sampling Procedures Manual.

(b) As an alternate, the requirements of N.J.A.C. 7:28-12.8 shall be considered to be met for a specific radionuclide if:

1. Where only one radionuclide adds to the radioactive contamination of the site, the incremental concentration of the radionuclide above the natural background radionuclide concentration and the amount of uncontaminated surface soil meet the pre-mixing values in Table 4A, 4B (for unrestricted use), 5A, or 5B (for limited restricted use) below;

Allowed Incremental Derived Concentration Guideline Level of Individual Radionuclides in Soils

Data in image

2. After it is established that the concentrations in Table 4A, 4B, 5A, or 5B above are met, the layer of residual radionuclides shall be mixed thoroughly with the layer of uncontaminated surface soil to achieve a uniform concentration, as outlined in Chapter 12 of the Department's Field Sampling Procedures Manual, throughout the soil column;

3. Where more than one radionuclide contaminant is present at the site, their concentrations meet the sum of the fractions as described below:

Sum of	CA[i]	</=	1
--------
C[i]
where:
CA[i]=	the incremental concentration of
radionuclide i at the site, and
C[i]=	the incremental allowed concentration of
radionuclide i from Table 4A, 4B, 5A, or 5B
above, if it were the only remaining radionuclide
at the site; and

4. The requirements in (a)3 above shall be met.

N.J. Admin. Code § 7:28-12.9

Amended by R.2008 d.281, effective 9/15/2008 (operative September 30, 2009).
See: 40 N.J.R. 2309(a), 40 N.J.R. 5196(b), 41 N.J.R. 3415(a).
Section was "Minimum remediation standards for radionuclide contamination of soil". In the introductory paragraph of (a), deleted "in soils" following "contamination"; in (a)1 Tables 3A and 3B, updated column "VE1" entries for rows "Ac227 USS 2" through "Ac227 USS 5" and "Th232 USS 1" through "Th232 USS 5"; and in the Table 3B header, substituted "Bq/g" for "pCi".