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GIS Tools and Techniques for Environmental Assessment of
Pipeline Construction
GIS Tools and Techniques for Environmental Assessment of
Pipeline Construction
Erik DanielsonFebruary 27, 2007
Erik DanielsonFebruary 27, 2007
Environmental AssessmentEnvironmental Assessment
Pipeline construction or replacement ESIA/FERC projects
GIS & GPS tools & techniques●Environmental field surveys●Data integration● Impacts analysis●Mapping
Pipeline construction or replacement ESIA/FERC projects
GIS & GPS tools & techniques●Environmental field surveys●Data integration● Impacts analysis●Mapping
Data CollectionData Collection
Garbage in, Garbage outKnow the Coordinate System for the project!●UTM? Stateplane?●Meters? Feet (International or U.S. feet?)
Best available data / most practical data
Garbage in, Garbage outKnow the Coordinate System for the project!●UTM? Stateplane?●Meters? Feet (International or U.S. feet?)
Best available data / most practical data
GPS Field Data CollectionGPS Field Data Collection
Establish a protocolSub-meter horizontal positioning
Establish a protocolSub-meter horizontal positioning
GPS Field Data CollectionGPS Field Data Collection
Establish a protocolSub-meter horizontal positioningStandardized data dictionary● Must be identical for
multiple crews
Establish a protocolSub-meter horizontal positioningStandardized data dictionary● Must be identical for
multiple crews
GPS Field Data CollectionGPS Field Data Collection
All features require a unique identifier 8-12 character FEATURE_ID FNNCCXXX● F = Feature Type● NN = Team Number● CC = County code● XXX = Feature number (001- 999 for each county)
All features require a unique identifier 8-12 character FEATURE_ID FNNCCXXX● F = Feature Type● NN = Team Number● CC = County code● XXX = Feature number (001- 999 for each county)
Example: the FEATURE_ID for team # 2B’s thirteenth wetland for Scotland County would be
W2BSC013
GPS Field Data CollectionGPS Field Data Collection
Ancillary Facility (i.e., Access Roads, Pipeyard, Pump House, etc.)
700
Single line where width<10’(i.e., ditch/stream)600
Transition500
Inclusion400
Side300
Exit/Egress200
Enter/Ingress100
DescriptionFlag Series
GPS Field Data Review & EditingGPS Field Data Review & Editing
Data review & correction each dayBiologist must review and approve all points, lines, and attributesDifferential correctionEditing
Data review & correction each dayBiologist must review and approve all points, lines, and attributesDifferential correctionEditing
Post ProcessingPost Processing
Check data in Trimble Pathfinder OfficeExport to shape files●Check settings & coordinate system ●Use the same settings every timeMaintain a list of all GPS rover files received from the field crewsPrint maps of all raw data for team review
Check data in Trimble Pathfinder OfficeExport to shape files●Check settings & coordinate system ●Use the same settings every timeMaintain a list of all GPS rover files received from the field crewsPrint maps of all raw data for team review
Post ProcessingPost Processing
Merge data setsDeliver data to project engineers
Merge data setsDeliver data to project engineers
Prepare Engineering DataPrepare Engineering Data
Data required from project engineers:● Centerline & mileposts● Construction Right-of-way (ROW)
Permanent WorkspaceTemporary WorkspaceAdditional Temporary Workspace (ATWS)
● Above Ground FacilitiesPipe yards, contractor yards, warehouses, meter stations, compressor stations
● Access Roads● Aerial Photography
Data required from project engineers:● Centerline & mileposts● Construction Right-of-way (ROW)
Permanent WorkspaceTemporary WorkspaceAdditional Temporary Workspace (ATWS)
● Above Ground FacilitiesPipe yards, contractor yards, warehouses, meter stations, compressor stations
● Access Roads● Aerial Photography
Prepare Engineering DataPrepare Engineering Data
Construction ROW / Facility BoundariesConstruction ROW / Facility Boundaries
Pipeline Route
Construction WorkspacePermanent
Temporary
ATWS
Facility
Impacts AnalysisImpacts Analysis
T&E (Threatened & Endangered) SpeciesWater CrossingsWetlandsLand UseSoilsGeologyCultural ResourcesProtected/Conservation lands
T&E (Threatened & Endangered) SpeciesWater CrossingsWetlandsLand UseSoilsGeologyCultural ResourcesProtected/Conservation lands
T&E Species AnalysisT&E Species Analysis
Problem:●Determine milepost, distance and direction for
all species locations along the pipeline.
Solution:● Linear referencing tools in ArcMap
Problem:●Determine milepost, distance and direction for
all species locations along the pipeline.
Solution:● Linear referencing tools in ArcMap
Wetlands AnalysisWetlands Analysis
Problem: Calculate acres of wetlands impacted by proposed pipeline construction corridor within each county
Problem: Calculate acres of wetlands impacted by proposed pipeline construction corridor within each county
Wetlands AnalysisWetlands Analysis
Process Steps: Conduct “Intersect” of Wetlands, Construction Workspace, and County layer
Process Steps: Conduct “Intersect” of Wetlands, Construction Workspace, and County layer
Wetlands AnalysisWetlands Analysis
Process Steps: Database file (DBF) of wetland polygons within corridorProcess Steps: Database file (DBF) of wetland polygons within corridor
Wetlands AnalysisWetlands Analysis
Solution: Load DBF file into Excel and create pivot table reportSolution: Load DBF file into Excel and create pivot table report
Soils AnalysisSoils AnalysisProblem: Report soil characteristics by milepost for entire pipeline routeProblem: Report soil characteristics by milepost for entire pipeline route
Mapping UnitSoil Series and Percent ComponentDrainage ClassSurface TextureRange of SlopesSoil Erodibility Factor High Compaction Potential Hydric SoilsHighly Erodible SoilLow Revegetation PotentialPrime Farmland Soils
Mapping UnitSoil Series and Percent ComponentDrainage ClassSurface TextureRange of SlopesSoil Erodibility Factor High Compaction Potential Hydric SoilsHighly Erodible SoilLow Revegetation PotentialPrime Farmland Soils
Soils AnalysisSoils Analysis
Solution: Microsoft Access & Model BuilderSolution: Microsoft Access & Model Builder
MappingMappingProblem: Create maps along a 700 mile Pipeline Route on Aerial background.Solution: Map Book Script
Problem: Create maps along a 700 mile Pipeline Route on Aerial background.Solution: Map Book Script
Additional GIS workAdditional GIS workInitial route selection / desktop analysisAlternatives analysisCo-location statisticsLand usePopulation & social impacts analysisWater resource studies & risk analysisCultural resourcesPost construction monitoringPublic outreach efforts
Initial route selection / desktop analysisAlternatives analysisCo-location statisticsLand usePopulation & social impacts analysisWater resource studies & risk analysisCultural resourcesPost construction monitoringPublic outreach efforts
Questions? Questions?
Erik [email protected]
617-482-4930 x4761
Erik [email protected]
617-482-4930 x4761