CITY OF PRINCE GEORGE WELLS PROTECTION PLAN

March 2003 022- 1784
For this scenario, three separate releases were simulated, one for each of the three wells.
For each well, it was assumed that the E was released on the portion of the rail line
located closest to the well.
If a spill of MTBE were to occur alo the rail line near the proposed Fishtrap Island
Collector Well, it would be located ide of the current capture zone but within the
projected average capture zone. Therefore, average pumping conditions were
used in this simulation.
The contaminant plume predicte
xtmds east from the derailment
location (Figure 33). After the rele
nt concentrations at the Proposed
Fishtrap Island Collector
.I% of the source
concentration after approx
relative concentration is then
predicted to gradually increase to a steady-state value o ut 2.4% after about seven
BE, with a reporte
, this would result in a
steady-state concentration signifi g water guidelines.
Concentrations at the well would lik
king water guidelines almost as soon
as the plume reaches the well.
If a spill of MT E were to occur along the rai
within the current capture zone.
simulation.
601, it would be located
ditions were used in this
The simulation predicts that in the event of a release, the contaminant plume would
extend southeast from the derailment ocation (Figure 33). After the release, the
contaminant concentrations at
to increase to .I% of the source
concentration after approximately one month. he dative concentration is then
predicted to gradually increase t a steady-state value of about 5.3% after about five
months. This would predict a steady-state E concentration significantly above
drinking water guidelines, with drinking water guidelines likely being exceeded as soon
as the plume reaches the well.
If a spill of MTBE were to occur along the rail line near 60% it would be located
outside of the current capture zone, but within the projected average capture zone.
Therefore, projected average pumping conditions were used in this simulation.