AREA FLOOD ASSESSMENT
Pinnacle Engineering was retained by a rail client to analyze approximately 29 miles of mainline track adjacent to a major river system which had experienced a significant number of washouts during extreme flooding. A majority of the rail line was in a remote area, and survey and flood data were not readily available. Analysis was required as quickly as possible so that new, properly sized culverts could be installed as rail roadbeds were repaired and similar damage in future flooding events could be avoided.
Pinnacle Engineering was retained by a rail client to investigate complaints by a City and an area farmer whose land flooded following heavy rainfall. The City and farmer believed the flooding was caused by inadequate drainage capacity through two culverts on railroad property: an old cast concrete arch culvert running parallel to the rail client’s tracks and passing under a County Road; and a steel culvert leading from the city into a State Highway ditch and passing under the client’s tracks. Pinnacle’s client did not want to install additional culverts if they were not needed.
Pinnacle Engineering was retained by a rail client to provide hydraulic analysis of an area which was flooded following extreme rainfall events. Heavy rains, combined with overtopping of an area reservoir, flooded the client’s mainline track and caused a washout and subsequent train derailment adjacent to a National Wildlife Refuge.
Erosion of a river was encroaching on a rail bed owned by a Class I Railroad client, and the client attempted to stop the erosion by placing rip-rap along the embankment. This attempt failed, and the client hired Pinnacle Engineering to recommend and implement a solution.
Pinnacle Engineering was retained by a railroad client to explore solutions to flooding that was occurring in a rail yard and maintenance facility during heavy rainfall events, causing periodic shutdown of maintenance operations.
STORMWATER POND REMEDIATION
As part of an 80-acre industrial site property transfer, Pinnacle Engineering was retained to restore a large stormwater infiltration pond present on the property. Over an approximately 40 year period, the pond had filled in with up to six feet of silt, which restricted infiltration. Debris from previous site operations needed to be removed from pond side slopes and in a few locations within the pond footprint.
WINONA COMMERCIAL DOCK GRADING AND DRAINAGE
Pinnacle Engineering was hired to conduct a geotechnical investigation for the Winona Commercial Dock facility in order to identify coal fill removal requirements prior to initiating a site paving project. The property had historically been used as a coal handling facility, and the owner intended to lease it for use as a truck staging facility.
NORTH DAKOTA FRAC SAND TERMINAL
Pinnacle Engineering was retained by a major aggregate handling company to provide earthwork design, rail design, drainage design, wetland mitigation design and environmental permitting services, and construction oversight for a facility capable of processing 400,000 tons of frac sand products per year. The facility is located adjacent to a crude oil rail loadout terminal in North Dakota.
NORTH DAKOTA MIDSTREAM CRUDE OIL FACILITY
Pinnacle Engineering assisted a North Dakota client with environmental issues related to an existing four-track (40 cars each) facility that transloaded crude oil from trucks to rail cars in North Dakota. Pinnacle provided additional services for the client by preparing a feasibility study for a loop track transloading facility, which would enable the client to dramatically reduce loading and shipping costs.