Environmental Engineering Reference
In-Depth Information
Figure 10.9
Calculation of the remedial target concentration based on receptors' requirement.
-
If PEC is higher than the required concentration, the targeted (acceptable maxi-
mum) emission from the source (
e
source
) or the concentration in the source (
c
source
)
is calculated by the inverse application of the site-specific transport model;
-
Comparison of the estimated emission with the inversely calculated emission
results in the necessary emission reduction rate or concentration reduction rate
in the source.
Assuming that the groundwater is used as drinking water, as shown in Figure 10.9,
the calculation steps of the remedial target in the source are the following:
1
Source
→
E
source
(
C
source
)
→
transport and fate modeling
→
PEC
compliance
2
PEC
compliance
> EQC
compliance
→
target
→
pec
compliance
≤
EQC
compliance
3
pec
compliance
→
inverse transport and fate modeling
→
e
source
(
c
source
)
4
E
source
(
C
source
)
→
risk reduction/remediation
→
e
source
(
c
source
),
where:
-
E
: emission;
-
C
: concentration;
-
PEC
: predicted environmental concentration;
-
EQC
: environmental quality criterion;
- Capital letter: high concentration, unacceptable value;
- Lower case: low concentration, targeted value;
-“
→
'': next step.
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