GCS Geoscience

Greg Schlenker PhD PG

Principal

Engineering Geology

Geographic Information

Environmental Planning

 

 d|(801) 745 0262

m|(801) 458-0207

gcsgeoscience@gmail.com

gschlen@q.com



Transportation/Energy Corridor Projects


Questar ML 104 pipeline construction 2000, Skyline Drive, Manti - La Sal National Forest, Utah


Earth Resource Assessment, Mountain States Transmission Intertie Project - From 2007 to 2008.  The Mountain States Transmission Intertie (MSTI) project is planned for the construction of a 500kv transmission line from west-central Montana to south-central Idaho to provide power grid relief in this part of the country.  Although straight-line distance between the connecting substations is approximately 280 miles, nearly 990 miles of routing comprising 31 segment alternatives were evaluated to fulfill environmental planning requirements.  Engineering geology issues evaluated in this characterization included surficial geology, mass movement potential, slope conditions, active faults, seismic zonation and liquifaction potential.  To individually characterize these issues, each segment was mapped at “best-scales” using a GIS to integrate vector, raster and digital elevation information across the two state area.  The GIS enabled the numeric quantification of the geological issues thereby allowing the environmental planners to compare and assess geologic and environmental impacts along the route segments.

Mountain States Transmission Intertie Project, Montana and Idaho


SR 6 Spanish Fork to Green River engineering geology studies for the environmental document, Utah, Wasatch, Carbon and Emery Counties, Utah

Engineering Geology Studies, Environmental Document In Support Of Proposed SR 6 Improvements; Spanish Fork to Green River, Utah - Project Geologist, 2005. In conjunction with geotechnical engineering and rock slope engineering studies, The Incumbent conducted technical engineering geology studies and detailed surficial geological mapping for support of environmental documentation being prepared for existing highway improvements for an approximately 127-mile segment of State Highway. Primary tasks included surficial geological mapping of highway alignment, seismic hazard characterization, natural hazards characterization, construction of geological issues on GIS for report presentation and delivery.


Questar ML 104 rehabilitation sequence 2000-2014, Skyline Drive, Manti - La Sal National Forest, Utah


Geological and Geotechnical Support for FERC Environmental Resource Report, Proposed Natural Gas Mainline, Questar Regulated Services; Carbon, Emery, Sanpete and Utah Counties, Utah - Project Geologist 1999.  Performed desk-top studies of geological and geotechnical conditions for a proposed a 75.6-mile, 24-inch natural gas pipeline from the Price Coal Bed Methane Project west of Price, Utah, to a termination point at Elberta, Utah. The studies included seismic hazards, slope stability hazards, surface fault rupture hazards, underground mine subsidence hazards, liquefaction potential hazards, flooding and stream scour, and collapsible soils hazards.


Welded pipe, Kern River Pipeline construction, Chalk Creek, Summit County, Utah

Geological and Geotechnical Support for Kern River Natural Gas Pipeline, Wyoming, Utah, Nevada and California - Staff Geologist 1989-1990.  Performed desk-top and field studies of geological and geotechnical conditions for a proposed 1,717 mile 36-inch natural gas pipeline from the gas producing fields in Wyoming to Bakersfield, California.  The studies included seismic hazards, slope stability hazards, surface fault rupture hazards.

Slinging pipe into ditch, Kern River Pipeline construction, Hardscrabble Canyon, Morgan County, Utah