ECOPROBE 5 - rs dynamics

CASE STUDY 2 (Fig. 27)
The study site is in the area where the
hydrocarbon products were transferred to
tank wagons about 10 years ago. The
task was to survey the site for possible
residual contamination.
An old and almost biodegraded
contamination is indicated between 25
and 35 meters (distance) at the profiles 5
and 10.
Some hydrocarbon pollution remains as
the PID channel indicates the presence
of organic compounds at the given part of
the surveyed site.
IR methane channel indicates presence
of methane.
IR TP channel measures methane plus
hydrocarbon compounds. The TP value
perfectly correspond with methane
channel, which indicates old
contamination, showing up as methane,
with much bacterial activity resulting in
methane production.
IR CO2 channel indicates increasing
concentration of CO2 , which is
connected to bacterial activity (bacteria
produce CO2 and consume O2).
The graph shows a decrease in oxygen,
which corresponds well with the increase
of CO2 .
.
Conclusion:
Methane, CO2 and O2 values indicate old
contamination with a high bacteria activity
Some residual contamination is still
present.
.
DATA INTERPRETATION
Fig. 27
73
Organic Compounds Concentration
Methane Concentration
Hydrocarbon Compounds Concentration
CO2 Concentration
Oxygen Concentration