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Client:
Shell Oil Company / Current Owner Anacortes Refinery |
Background
The Anacortes Refinery has collected groundwater, soil, and pore water
samples for over 25 years. Much of this sampling and analysis has been
required under the refinery’s RCRA Part B Permit; the owners have
also implemented long-term quarterly monitoring programs to keep abreast
of any changes in soil or water quality. In addition to this chemical
data, PGG had developed a vast amount of hydrogeologic information for
the facility.
Challenges
The facility’s groundwater, soil, and pore water results needed
to be organized into a database that would allow easy retrieval and reporting.
Because chemical analyses had been performed by various laboratories,
the database needed to be able to accommodate variations in reporting
levels and units. In addition, this information would be far more useful
if it could be related to spatial features such as hydrogeologic units,
utility corridors, springs, and wells.
Approach
We developed Geographic Information Systems (GIS) model for the site.
This model not only contains layers that represent aquifer and aquitard
units, but it also links to a database containing information about wells,
springs, utility corridors and other contaminant transport pathways, along
with 25 years of soil and water quality data.
Outcome
Users can query the system and view results in three dimensions via an
intuitive interface. This tool was valuable for communicating the refinery’s
environmental history to Tesoro Northwest, the company that purchased
the facility from Shell.
Related Projects
Property Transfer / Shell Oil Company: Environmental Investigations & Transfer of Anacortes Refinery