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



Environmental Assessment


Compressor Station Noise Study, Bradford County, Pennsylvania


Noise Analysis, Proposed PacifiCorp Lake Side Power Plant, Vineyard, Utah - Project Manager, 2004 and 2007.  The purpose of the noise study is to evaluate whether the noise levels generated by the proposed Summit Vineyard Lakeside Power Plant (Lakeside Power Plant) comply with relevant noise limits established in the surrounding communities, and conform to the surrounding land use and zoning.  To evaluate the potential noise impacts that the proposed plant would produce we assessed the land use of areas surrounding the proposed power plant location and compiled relevant noise limits established by state and/or local ordinances for the various land uses surrounding the proposed plant.  Using GIS, the modeling of future maximum noise levels associated with the proposed power plant operation was performed using analytical calculations. The results of our modeling indicated the predicted noise levels generated by the proposed power plant would be in compliance with surrounding land uses. Follow up analysis following the commencement of plant operations in 2007 indicated that plant operations noise at full generation capacity did not exceed the 2004 modeled noise estimates.  


Eagle Island Restoration Project, Boise River Ada County, Idaho, Senior Geologist 2010 – Present.  Following a review and integration of one-foot aerial imagery, two–meter LiDAR, and existing geologic map layers at greater detail the surficial engineering geology mapping of the Eagle Island area was prepared at best scales using GIS analysis.  Additionally historical 1939 aerial photography layers were integrated into the GIS database to demonstrate landscape change for the area.  This data will be used by the Geotechnical Engineer, and USA Corps of Engineers Environmental Scientist for restoration decision-making.

        Eagle Island area, Ada County. Idaho


         Montain States Transmission Intertie Project, Montana and Idaho

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 are 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 liquefaction 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.


Morgan County Fairgrounds cell tower site, Morgan, Utah

 

Cell Tower Siting and Permitting, Throughout Utah and Surrounding States, Project- Client- Manager 1992-Present. Prepared documents and permits for the siting on numerous new-tower, co-locate, and temporary cell-on-wheels throughout Utah, Wyoming, Idaho and Nevada. Projects typically consists of 1) Geotechnical soils and foundation study, 2) Phase I environmental screening and 3) NEPA environmental screening checklist.


Ely Airport Mineral Survey for Airport Development Group, White Pine County, Nevada - Project Manager, 2006.   Mineral survey conducted at the supervision of the Bureau of Land Management.  Mineral survey facilitated the conveyance transfer of 1,544 acres of the public lands located adjacent to Yelland Field, or Ely Airport to White Pine County. The transfer allowed for the expansion and development of airport facilities, and encourage development of air service and aviation-related industry.  Survey was conducted to assess mineral potential of transfer lands. The conveyance was provided for by the White Pine County Conservation, Recreation, and Development Act of 2006.

Pilots guide, Ely Airport, White Pine County, Nevada


           South State Street Noise Assessment, Sandy, Utah

South State Street CATX-Noise Analysis - Project Manager, 2004. Noise Analysis for State Street from 9000 South Street to 10600 South Street in Salt Lake County, Utah. Project requires taking existing noise measurements with 2B-3080 noise monitor, a detailed analysis using noise prediction model TNM 2.5, and determining the feasibility of noise mitigation using Federal Highway Administration guidelines. Noise assessment and mitigation modeling using the TNM 2.5,and ArcView GIS also performed to identify the appropriate mitigation options. The results of the studies and the impacts of each alternative are to be considered and documented for inclusion in the CATX Document.


Dugway Proving Ground, Michael Army Airfield Fixed Wing Runway Environmental Assessment - Project Manager, 2004. The environmental assessment for reconstruction and operational activities at the Michael Army Airfield, Dugway (MAAF) Proving Grounds was performed to evaluate potential environmental impacts of these activities. The EA describes and evaluates potential impacts to the following resources from the proposed construction and operation of the Airfield reconstruction project. The issues assessed include (1) vegetation, (2) wildlife, (3) threatened or endangered species, (4) water quality, (5) air quality, (6) soil impacts, (7) cultural resources, (8) land use, (9) hazardous and toxic materials, (10) socio-economic resources and (11) noise. The EA describes existing conditions of these resources, evaluates potential impacts to these resources and identifies mitigation activities for these impacts.  A range of alternative actions including the no action alternative was evaluated. Our team conducted a detailed site assessment of the potentially impacted areas of the installation and providing full documentation of compliance with the NEPA process and other applicable Federal and State environmental laws and regulations including but not limited to: The Clean Air Act, Clean Water Act, Endangered Species Act and the National Historic Preservation Act and Army Regulation AR-200-2.


Original and completed MAAF runway facilities pictured here

The MAAF runway was deteriorated and in need of replacement, Dugway Proving Ground, Utah

Protected borrowing owls inhabit parts of the Dugway Proving Ground

Historic Lincoln Highway bridge preserved near the Proving Ground runway


Proposed Park Well, Wilkinson Cottonwood Mutual Water Company Environmental Assessment, Mountain Green, Utah (Federal Revolving Fund Project #3F036) - Project Manager, 2005.  Because federal funds were involved with this well development, an environmental assessment (EA) was required.  The requirements of this EA were regulated and reviewed by the Utah State Division of Drinking Water, Department of Environmental Quality.  This EA primarily involved desk-top studies and correspondences with “cross-cutter” agencies to inform of the proponent’s proposed actions.  Two public meetings were announced and held in Mountain Green at the commencement and conclusion EA studies.

NEPA Environmental Assessment, Granite Flowline; Big Cottonwood Canyon, Utah - Project Manager, 1996.  Supervised in-house and contract team consisting of geologist, hydrogeologist, geotechnical engineers, traffic engineers, landscape architects, soil scientists, environmental specialists, and plant and animal biologists.  The NEPA assessment was conducted for PacifiCorp under review specifications by the Wasatch National Forest.  The assessment of proposed and alternative actions assisted National Forest personnel in selecting a preferred alignment for the two-mile hydroelectric pipeline alignment.