Walsh has used a variety of GIS tools in conducting planning, impact assessment, and monitoring projects for pipelines and other linear projects.
Camisea Pipeline Digital Video Monitoring Project
The Camisea Pipeline runs from the Amazon Jungle of Eastern Peru to the
Pacific Coast. Over 500km long, the pipeline traverses the jungle,
cloud rain forest, the Andes, high alpine plateaus and coastal desert.
The pipeline construction has been completed and reclamation of the ROW
was initiated. The client was looking for a way to monitor and report
findings on the successful revegetation of the pipeline. Walsh designed
a video monitoring system using off-the-shelf components to acquire
continuous video along the 500km of pipeline and produce monitoring
tools.
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Environmental Modeling of 3D Seismic Program - Ecuador.
WALSH used historic and recent LandSat imagery to develop a model to
help predict the long term effects of a seismic program. The project
examined historic land use trends and deforestation patterns. Factors
that influence deforestation such as roads and seismic lines were
merged in the GIS to produce a complex table of influences and how they
may promote future deforestation. The model was used on a proposed
seismic program to quantify possible environmental impacts.
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Monitoring of Regrowth of Seismic Lines - Peru.
For a previously completed seismic survey, WALSH monitored regrowth of
the helipads and camp clearings using aerial photographs acquired by
helicopter using Walsh's aerial photograph camera system. Satellite
imagery was used to identify possible locations of helipads. Aerial
imagery was analyzed to identify the size and amount of ground cover.
Imagery was acquired one year later to evaluate growth rate. We used a
GIS system to correlate the degree and timing of regrowth to factors
such as size of helipad clearing, proximity of clearing to rivers and
villages, and ecosystem type.
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Ruby Pipeline Project
Walsh is assisting our parent company, E & E, to define and protect
sage-grouse steppe habitats within a 10-mile buffer along the Ruby
Pipeline. The Ruby Pipeline will be approximately 670 miles of
underground natural gas transmission pipeline originating at the Opal
Hub in Wyoming and terminating at a Malin, Oregon interconnect, near
California's northern border. Walsh scientists are determining ways to
offset carbon emission, and protect or enhance sagebrush-steppe,
sage-grouse and pigmy rabbit habitats. Carbon emissions from the
pipeline will be offset through a combination of carbon sequestration
through forest and sagebrush-steppe habitat enhancements and carbon
credit purchases. Walsh scientists developed a GIS rule-based model to
define sage-grouse and pigmy rabbit habitats within a 10-mile buffer
along the pipeline corridor. The rule-based model relies on analysis of
high-resolution, multispectral remote imagery, and literature
descriptions of habitat attributes and state wildlife biologists expert
opinions to spatially define sage-grouse and pigmy rabbit habitats.
Best management practices will be employed to protect or enhance
high-quality sage-grouse and pigmy rabbit habitats within the 10-mile
wide pipeline buffer.
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