DEVELOPMENT OF ALTERNATIVE REMEDIATION STANDARDS FOR SOIL FOR THE
INHALATION EXPOSURE PATHWAY
Pursuant to N.J.A.C. 7:26D-8.3(a)1ii, an alternative remediation
standard (ARS) for soil for the inhalation exposure pathway may be developed for a
site or an area of concern in accordance with the procedures provided in this
appendix.
I. Overview
(a) An ARS for this exposure pathway may be developed at any
time.
(b) The ARS options listed in III of this appendix are applicable to
carcinogenic and noncarcinogenic health end-points.
(c) The ARS options outlined in III of this appendix may be utilized
for residential and nonresidential land use scenarios, as well as alternative land
use scenarios described in III(a) of this appendix.
(d) An ARS for this exposure pathway may be developed based on
modification of site-specific exposure parameters listed in III(b) of this
appendix.
II. Required Approvals and Permits
(a) An ARS developed in accordance with III(a) of this appendix must
be approved by the Department prior to use at the specific site or area of
concern.
(b) An ARS developed in accordance with III(b) of this appendix does
not require approval by the Department prior to use at the specific site or area of
concern.
(c) The Department shall require the use of an institutional
control, engineering control (as needed), and a remedial action permit, pursuant to
N.J.A.C. 7:26C-7for an ARS developed pursuant to III(a), III(b)1iv, and III (b)3 of
this appendix to ensure that the continued use of the ARS remains valid.
(d) The Department shall not require the use of an institutional
control, engineering control (as needed), and a remedial action permit, pursuant to
N.J.A.C. 7:26C-7for an ARS developed pursuant to III(b)1v and III(b)2 of this
appendix.
III. Options and Procedures
(a) An ARS for this exposure pathway may be based on a site-specific
alternative land use, which would involve an alternative exposure scenario (for
example, exposure frequency, exposure time, and exposure duration) that is neither a
residential nor a nonresidential land use scenario.
1. Examples of alternative land uses include, but are not limited
to:
i. Active recreational land use, such as sports playing fields and
playgrounds;
ii. Passive recreational land use, such as land and trails used for
walking, cycling, and hunting; and
iii. Access areas, such as right-of-way areas used for the
inspection and repair of utilities.
2. The following actions shall be taken when developing an ARS
pursuant to this appendix:
i. Determine the intended use of the site and the appropriate
exposure frequency (EF), exposure time (ET), and exposure duration (ED) associated
with the intended land use in accordance with Department guidance;
ii. Use the EF, ET, and ED in the Department's calculator located on
the Department's website to calculate the ARS; and
iii. Submit the following information to the Department in addition
to the applicable form found on the Department's website:
(1) The resultant ARS and the modified input parameters used in the
Department's calculator;
(2) A description and basis of how the input parameters were
selected; and
(3) A description of institutional controls and engineering controls
associated with the ARS.
(b) An ARS for soil for this exposure pathway may be based
site-specific parameter modifications as follows:
1. Depth Range of Contamination:
i. Determine the actual depth range of contamination by delineation
sampling pursuant to the Technical Requirements for Site Remediation, N.J.A.C.
7:26E-4, and Department guidance;
ii. Use the actual depth range of contamination in the Department's
calculator located on the Department's website to calculate an alternative
inhalation remediation standard;
iii. Provide the following information to the Department in addition
to the applicable form found on the Department's website with the applicable
remedial phase report:
(1) The resultant ARS and the modified input parameters used in the
Department's calculator;
(2) A description and basis of how the input parameters were
selected, including all related laboratory results; and
(3) A description of any institutional controls and engineering
controls associated with the ARS;
iv. The Department shall require the use of an institutional
control, engineering control (as needed), and a remedial action permit, pursuant to
N.J.A.C. 7:26C-7, for an ARS based on a site-specific depth range of contamination
that begins at a depth greater than zero feet below ground surface to ensure that
the continued use of the ARS remains valid; and
v. The Department shall not require the use of an institutional
control, engineering control, or a remedial action permit, pursuant to N.J.A.C.
7:26C-7, for an ARS based on a site-specific depth range of contamination that
begins at the ground surface.
2. Soil Organic Carbon Content (foc):
i. Collect and analyze samples for determining foc in accordance
with the appropriate Department guidance;
ii. Input the appropriate foc value(s) in the Department's
calculator located on the Department's website when calculating an alternative
inhalation remediation standard; and
iii. Provide the following to the Department in addition to the
applicable form found on the Department's website with the applicable remedial phase
report:
(1) The resultant ARS and the modified input parameters used in the
Department's calculator; and
(2) A description and basis of how the input parameters were
selected, including all related laboratory results.
3. Fraction of Vegetative Cover (V):
i. Determine V on the site in accordance with the appropriate
Department guidance;
ii. Use V in the Department's calculator located on the Department's
website to calculate the ARS for soil for the inhalation exposure pathway;
and
iii. Provide the following information to the Department in addition
to the applicable form found on the Department's website with the applicable
remedial phase report:
(1) The resultant ARS and the modified input parameters used in the
Department's calculator;
(2) A description and basis of how the input parameters were
selected, including all measurements and calculations; and
(3) A description of any institutional controls and engineering
controls associated with the ARS.
