Minnesota GeoServices, Inc. is ready to assist you on projects throughout the United States. Our offices are located in Saint Paul, Minnesota, however at any time our equipment may be mobilized anywhere in the country. Our mobilization costs are based on the costs to mobilize from our office or from where our equipment is currently operating, whichever is less expensive for our customers. Please keep us in mind for your next CPT project, wherever it may be!
Recent sites and projects include:
-Standard and seismic CPTU along the entire alignment of the Central Corridor Light Rail Transet Line. Multiple rounds of utility clears were required, ensuring no utilities were damaged at over fifty locations in the middle of this very busy thoroughfare. Safety and traffic control were major concerns. We also conducted sub-meter GPS micro-siting of our own sounding locations as a last minute add-on.
-Seismic CPTU soundings to 65' at over 15 separate wind projects in Minnesota, South Dakota and Iowa from March to September, 2007.
-Seismic and conductivity CPTU soundings for dam stability investigations in western Michigan and western Minnesota.
-Seismic CPTU to 120' of depth at an eastern Michigan refinery and ethanol plant.
-Multiple projects with seismic CPTU soundings, vane shear testing and flat plate dilatometer testing completed up to 100' of depth for the expansion of a large mine tailings dam in Hibbing, Minnesota
-An eighty turbine wind farm site in southwestern Kansas including met towers and operations building. Seismic CPTUs were completed to refusal at each turbine location through difficult caliche zones (approx. 15 to 30 feet of depth). The CPT portion of the project was completed with less than two weeks on site. A conventional drill rig (on site to gather soil samples) also had difficulty with the caliche conditions. This large project required rushed mobilization and was completed within three weeks of the first phone call.
-A wind farm site in eastern Michigan with over thirty turbines and two substations. Seismic CPTUs were completed at each turbine location. Both standard CPTUs and seismic CPTUs were advanced at the substation locations. At minimal extra cost, shallow CPTUs were taken to aid the design of access roads to the turbines. Minnesota GeoServices gathered Mostap soil samples at several turbine locations to help calibrate the CPTU data.
- A pilot wind turbine site in Western Minnesota including wind turbines and a large substation. Seismic CPTUs were advanced at the turbine sites and standard CPTUs were done at the substation location.
- A planned berm complex for a large municipal airport. Minnesota GeoServices advanced CPTUs - in association with our client's conventional drilling program - to aid in characterizing sub-surface soil materials in loose, saturated alluvium. To accomodate airport operations the CPTUs were completed both during the day and at night with only minimal additional mobilization charges for night work. Due to the lighted work cabin, no significant difference in productivity was evident between the day and night phases of the project.
- Minnesota GeoServices advanced seismic CPTUs at the building site of a proposed computer tomography (MRI) machine. The proposed building site is part of an internationally-renowed medical center in Minnesota.
-Dozens of CPTU soundings at proposed ethanol plant locations in Minnesota, North Dakota and Iowa. Recently, within four days of recieving the first phone call Minnesota GeoServices advanced investigative CPTU soundings to bedrock (approx 25') surrounding grain silos at a recently constructed ethanol plant. The silos had experienced excessive differential settlement and foundation failure (7" of settlement and cracking in 48 hours) when first put into service. The continuous soil profiling possible with CPTU provides enlightening information on post-correction soil properties including soil type, moisture content and compaction.
-CPTU and seismic CPTU soundings to up to 95 feet of depth for the pile design of a new natural gas power generation facility in alluvial deposits adjacent to downtown St. Paul, MN. This investigation provided all of the information needed for a pile foundation design at a small fraction of the cost of a conventional drilling program.
