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KalispellGeolocation: 48.2609, -114.2743
NTL Engineering & Geoscience, Inc. (NTL), was formed in 1991 as an employee-owned, Montana corporation practicing in the geotechnical, environmental, and construction materials engineering and testing fields. The main office of NTL was established in Great Falls, and the Kalispell office was established as a satellite in 1994 to provide more locally available geotechnical and materials testing services to northwest Montana. The Kalispell office primarily serves the four counties in the northwest portion of the state, which while small in number, represents more than 13,000 square miles. The office personnel routinely conduct work outside of this area. NTL was acquired by Terracon in 2008. The NTL engineering staff has a wide range of geotechnical experience on projects ranging from large industrial facilities to dams, bridges, highways, landslides, retaining structures, defense facilities, and seismic-related studies with geographic project involvement ranging from Wyoming to Alaska. NTL provides construction materials engineering and testing and QA/QC services for constructed products ranging from buildings and pavements to earth structures. In-house testing services include determination of soil/aggregate index and engineering properties, Portland and asphaltic cement concrete mix designs and related testing, along with field quality control services during construction. NTL also provides environmental assessment and remediation services that are primarily focused on petroleum hydrocarbon contamination.
1075 Trumble Creek Road, Unit A
Kalispell, MT 59901
Phone: (406) 257 6479
Fax: (406) 257 6470
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Environmental
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Key Projects
Flathead County LandfillGeolocation: 48.4242, -114.1532
This project presents the results of Construction Quality Assurance (CQA) services provided by NTL
Engineering & Geoscience, A Terracon Company, during construction activities associated with the Phase IV-A excavation and final closure of the north and east slope construction project at the Flathead County Sanitary Landfill in Flathead County, Mont. The purpose of the closure is to provide a barrier on the slopes of the landfill that have attained final elevation. The two slopes closed for this project encompassed an area of approximately 14 acres. The final cover/barrier was…
Kalispell Bypass – US Highway 93 AlternateGeolocation: 48.2005, -114.3151
NTL Engineering & Geoscience, A Terracon Company, performed the geotechnical investigation for the Kalispell Bypass. Our involvement began in 1995 with a preliminary soil survey and culminated in 2010 with construction of the southern half of the alignment. Along with providing pavement section design recommendations for the Bypass Mainline and 20 associated named roadways, geotechnical guidance was provided for noise walls, pedestrian tunnel, and 10 bridge structures for creek crossings and separated-grade intersections. Challenging subgrade conditions were present along much of the…
Sam Bibler Memorial TrailGeolocation: 48.2005, -114.3151
The Sam Bibler Memorial Trail in Kalispell, Mont., included a section of the bicycle/pedestrian path that was constructed on a relatively steep embankment, which exhibited signs of adverse slope performance prior to construction. NTL Engineering & Geoscience, A Terracon Company, performed the geotechnical investigation for the retaining feature that would allow for grade raising without negative impact to the roadway embankment. Though traditional retaining features were reviewed, the project team elected to use an innovative approach using ultra-lightweight fill (geofoam) with relatively…