| Louisiana
Cleanup Standards for Contaminated Soil
The Louisiana Department
of Environmental Quality (LDEQ) has developed a Risk Evaluation/Corrective
Action Program (RECAP) to address risks to human health and the
environment posed by the release of chemical constituents to the
environment. This is LDEQ’s primary statutory mandate for remediation
activities. It is clear in Louisiana’s Environmental Quality Act that
risk to human health and the environment must be evaluated in the remedial
decision-making process.
RECAP uses risk evaluation
to: (1) determine if corrective action is necessary for the protection of
human health and the environment, and (2) identify constituent levels in
impacted media that do not pose unacceptable risks to human health or the
environment, i.e. RECAP Standards.
RECAP consists of a tiered
framework composed of a Screening Option and three Management Options.
This tiered approach allows site evaluation and corrective action efforts
to be tailored to site conditions and risks. As the Management Option
level increases, the approach becomes more site-specific and, hence, the
level of effort required to meet the objectives of the Option increases.
Although the level of effort required for each Option varies, each Option
achieves a common goal: protection of human health and the environment.
Attached are the
Screening Option tables that can be used to determine if additional
evaluation and/or corrective action is warranted. The lower of the
appropriate toxicity based value (Soil_SSni or Soil_SSi) and ground water
protection value (Soil_SSgw) shall be used for soil.
See our website at
www.deq.state.la.us/technology/recap/
for additional information or contact the Remediation Services
Division at (225) 219-3236 or the Environmental Technology Division at
(225) 219-3406.
|
Compound |
Soil_SSni*
mg/kg |
note |
Soil_SSi**
mg/kg |
note |
Soil_SSgw***
mg/kg |
note |
|
Acenaphthene |
260 |
N |
3900 |
N |
220 |
A |
|
Anthracene |
1400 |
N |
25000 |
N |
120 |
A |
|
Antimony |
3.0 |
N |
75 |
N |
12 |
L1 |
|
Arsenic |
0.38 |
C |
3.0 |
C |
100 |
L |
|
Barium |
520 |
N |
13000 |
N |
2000 |
L |
|
Benzene |
1.5 |
C |
3.2 |
C |
0.051 |
A |
|
Benz(a)anthracene |
0.56 |
C |
3.6 |
C |
8.6 |
A |
|
Benzo(a)pyrene |
0.33 |
Q |
0.36 |
C |
23 |
A |
|
Benzo(b)fluoranthene |
0.56 |
C |
3.6 |
C |
30 |
A |
|
Benzo(k)fluoranthene |
5.5 |
C |
35 |
C |
120 |
A |
|
1,1-Biphenyl |
220 |
N |
230 |
P |
190 |
A |
|
Cadmium |
3.7 |
N |
94 |
N |
20 |
L |
|
Carbon Disulfide |
37 |
N |
260 |
N |
11 |
A |
|
Chromium(III) |
7500 |
N |
190000 |
N |
100 |
L |
|
Chromium(VI) |
37 |
N |
940 |
N |
100 |
L |
|
Chrysene |
61 |
C |
400 |
C |
76 |
A |
|
Dibenz(a,h)anthracene |
0.33 |
Q |
0.36 |
C |
540 |
A |
|
Dibenzofuran |
21 |
N |
150 |
P |
24 |
A |
|
1,1-Dichloroethene (mixture) |
0.11 |
C |
0.25 |
C |
0.085 |
A |
|
cis-1,2-Dichloroethene |
4.8 |
N |
34 |
N |
0.49 |
A |
|
trans-1,2-Dichloroethene |
7.0 |
N |
49 |
N |
0.77 |
A |
|
2,4-Dinitrotoluene |
8.3 |
N |
110 |
N |
1 |
A |
|
Ethylbenzene |
150 |
N |
230 |
P |
19 |
A |
|
Fluoranthene |
200 |
N |
3600 |
N |
1200 |
A |
|
Fluorene |
180 |
N |
3100 |
N |
230 |
A |
|
Indeno(1,2,3-cd)pyrene |
0.56 |
C |
3.6 |
C |
170 |
A |
|
Lead (inorganic) |
400 |
B |
1700 |
B |
100 |
L |
|
Mercury (inorganic) |
2.2 |
N |
56 |
N |
4 |
L |
|
MTBE |
26 |
N |
480 |
N |
0.68 |
A |
|
Naphthalene |
0.78 |
N |
5.2 |
N |
0.11 |
A |
|
Nickel |
150 |
N |
3700 |
N |
200 |
L1 |
|
Pyrene |
150 |
N |
2700 |
N |
1100 |
A |
|
Toluene |
69 |
N |
480 |
N |
20 |
A |
|
Vanadium |
52 |
N |
1300 |
N |
2000 |
L1 |
|
Xylenes (total) |
150 |
P |
150 |
P |
180 |
A |
|
Zinc |
2200 |
N |
56000 |
N |
2800 |
S |
|
Aliphatics C6-C8 |
10000 |
O,T |
10000 |
O,T |
10000 |
O,T |
|
Aliphatics >C8-C10 |
110 |
N |
880 |
N |
530 |
A |
|
Aliphatics >C10-C12 |
210 |
N |
10000 |
O,T |
10000 |
O,T |
|
Aliphatics >C12-C16 |
310 |
N |
10000 |
O,T |
10000 |
O,T |
|
Aliphatics >C16-C28 |
10000 |
O,T |
10000 |
O,T |
10000 |
O,T |
|
Aromatics >C8-C10 |
61 |
N |
500 |
N |
6.5 |
A |
|
Aromatics >C10-C12 |
100 |
N |
1000 |
N |
10 |
A |
|
Aromatics >C12-C16 |
150 |
N |
10000 |
O,T |
20 |
A |
|
Aromatics >C16-C21 |
140 |
N |
10000 |
O,T |
210 |
A |
|
Aromatics >C21-C28 |
160 |
N |
10000 |
O,T |
10000 |
O,T |
|
TPH-G |
61 |
N,I |
500 |
N, I |
6.5 |
A |
|
TPH-D |
61 |
N,I |
500 |
N, I |
6.5 |
A |
|
TPH-O |
140 |
N,I |
10000 |
O,T |
210 |
A |
*Soil_SSni - Soil
Screening for Non-industrial
** Soil_SSi - Soil Screening Standard for Industrial
*** Soil_SSgw - Soil Screening Standard for Groundwater
A - Based on algorithm contained in Appendix H
B - Based on EPA's biokinetic and adult lead cleanup level models for lead
C - Based on carcinogenic health effects
I - TPH Standards are only applicable when used in conjunction with
Standards for indicator compounds
L - Soil level protective of groundwater for inorganic constituents based
on leachability
L1 - Soil level protective of groundwater for inorganic constituents based
on GW 1 because TCLP value not listed
N - Based on non-carcinogenic health effects
O - Ceiling value based on aesthetic considerations
P - Soil Saturation Limit is less than health based level thus default to
soil saturation limit
Q - Based on analytical quantitation limit
S - Soil level protective of groundwater for inorganic constituents based
on the maximum concentration for the beneficial use of sewage sludge
T - TPH shall not exceed 10,000
Contact:
Steve Chustz, Louisiana Department of Environmental Quality, Office of
Environmental Assessment, 225-219-3406.
E-mail:
stevec@deq.state.la.us
Web Site:
www.deq.state.la.us/technology/recap/
For additional
information see the Web Site or contact the Remediation Services
Division at (225) 219-3236 or the Environmental Technology Division
at (225) 219-3406.
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