Capabilities
Control Surveys
Control Surveys can be required for a number of projects including hydrographic surveys, construction projects, design surveys and any project that has a requirement for repeatable and usable coordinates or locations.
We have performed control surveys both as part of larger projects and as stand alone activities and are adept at working in both urban and remote settings.
Related Projects:
- NOAA Charting - Unimak Pass
- Unimak, Alaska
- We were contracted to provide modern, accurate hydrographic survey data to update the nautical charts north of Akun Island, Alaska, and including a portion of the Safety Fairway through Unimak Pass connecting the Bering Sea with the North Pacific Ocean.
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- Nome Navigation Improvements
- Nome, Alaska
- We were contracted by a large construction company to establish a control network and to provide progress checks for hydrographic and topographic surveys for the U.S. Army Corps of Engineers (USACE) - Alaska District in Nome, Alaska. Our surveying services were used to support the design project for a new harbor and entrance. Included in the project was also a large breakwater extending offshore.
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- NOAA Charting - Alabama, Louisiana and Mississippi
- Gulf of Mexico
- We were contracted by the U.S. Department of Commerce, National Oceanic and Atmospheric Administration (NOAA) to provide sidescan, single beam, and multibeam sonar services for Debris Mapping of the Alabama Fairways and Perdido Bay in the Gulf of Mexico.
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- NOAA - Alaska IDIQ Contract for Hydrographic Surveys and Related Services
- Various Locations, Alaska
- Since 1998, we have supplied the U.S. Department of Commerce, National Oceanic and Atmospheric Administration (NOAA) with hydrographic data of 100% bottom coverage with shallow-water multibeam sonar systems.
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- USACE - Alaska IDIQ Contract for Hydrographic Surveys and Related Services
- Various Locations, Alaska
- Since 1995, we have provided the U.S. Army Corps of Engineers (USACE) - Alaska District with hydrographic, topographic, and Global Positioning System (GPS) control surveys; aerial photography; LiDAR mapping; and tide studies on over five hundred projects throughout Alaska.
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- Support Surveys for Wildwood Air Force Station Remediation
- Kenai, Alaska
- Our surveyors performed a primary control monumentation survey, preliminary topographic and quantity calculations, construction and grading layouts and final as-built surveys of contaminated sites for the Wildwood Air Force Station Phase II Remediation Project.
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- NOAA Charting - Upper Cook Inlet
- Cook Inlet, Alaska
- NOAA contracted us to supply hydrographic surveying data for 54.3 square miles of Cook Inlet, Alaska. Afterward, 3,898 lineal miles of multibeam surveys, and 55 lineal miles of side scan sonar surveys were added to the contract.
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- NOAA - Nationwide IDIQ Contract for Hydrographic Surveys and Related Services
- Various Locations, U.S.A
- We understand NOAA's requirements and have the trained staff and equipment to perform their vital surveys. This 5-year term contract supports NOAA's nautical charting mission in Alaska, the Gulf of Mexico, and all other navigable waters of the U.S., including the East Coast, Pacific, Great Lakes, and U.S. territories.
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- Submarine Transmission Cable Installation
- Cook Inlet, Alaska
- We provided surveying and positioning services to support a 138-kilovolt (kV) submarine cable installation project. These services included a desk-top study, a pre-lay marine survey, a post-lay survey, Global Positioning System (GPS) control survey, and other support services during construction.
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- Kivalina Village Relocation
- Kivalina, Alaska
- We were contracted by the U.S. Army Corps of Engineers (USACE) - Alaska District to provide surveying services for the relocation of the village of Kivalina, Alaska. Services included aerial photography, topographic and hydrographic surveys, and support for field measurements of the existing town-site. The resulting services produced a storm surge analysis for possible relocation of the village.
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- Homer Spit Beach Condition Surveys
- Homer, Alaska
- Tasked by the U.S. Army Corps of Engineers (USACE) - Alaska District, TerraSond conducted beach condition surveys on the Homer Spit in Alaska. Ground topographic surveys were performed using Real-Time Kinematic (RTK) Global Positioning System (GPS) control methods.
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- Navigation Channel Dredging - Knik Arm Shoal
- Cook Inlet, Alaska
- We provided USACE Class I dredge payment surveys that included a pre-dredge survey, 13 project condition surveys, and a post-dredge survey for the construction of a navigation channel along the southern flank of Knik Arm Shoal.
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- Harbor Mountain Road Design
- Sitka, Alaska
- We were contracted by the U.S. Department of Agriculture U.S. Forest Service, Alaska Region to perform a preliminary line survey and hydro-site surveys in preparation for the engineering upgrade design of an existing 4.8 mile (7.6 kilometer) mountain road used as the primary access to public recreational facilities.
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- Wrangell Narrows Tide Stations
- Wrangell, Alaska
- We were tasked by the USACE - Alaska District to conduct tide surveys for the purpose of refining and adding continuity to the historical Tidal Datums located along the southern end of Wrangell Narrows, Alaska. The four selected tide stations provided vertical control datum for two USACE - Alaska District projects located within the vicinity of Mile 12 to Mile 21.
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- Kenai Peninsula Flood Plain Mapping
- Kenai, Alaska
- We were tasked by the U.S. Army Corps of Engineer Alaska District to survey the flood plain for three rivers on the Kenai Peninsula. Various surveys were conducted using aerial Light Detection and Ranging (LiDAR) sensors, single beam sonar systems and Real-Time Kinematic (RTK) Global Positioning System (GPS) topographic survey equipment.
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- NOAA Charting - Port Clarence and Nome
- Norton Sound, Alaska
- NOAA tasked us with providing hydrographic surveying and support services for the Approaches to Nome and Port Clarence in the Norton Sound along the Bering Sea, Alaska.
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- Surveys in Support of Mine Development
- Southwestern, Alaska
- Our surveyors used Static GPS to standardize project control on over 4,500 square miles of remote Alaska to support the development of a mineral mining operation. This project required a variety of surveying capabilities and technologies.
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- Northeast Cape - White Alice Communications Systems Site Surveys
- St. Lawrence Island, Alaska
- Our surveyors conducted a primary project control survey, secondary control layout survey for engineering purposes, and post-demolition locate surveys for the White Alice Communications Systems (WACS) on St. Lawrence Island, Alaska.
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- USACE - Texas IDIQ Contract for Hydrographic Surveys and Related Services
- Various Locations, Texas
- Since 2003, we have provided and continue to provide hydrographic surveys and related support services for the Galveston District of the U.S. Army Corps of Engineers (USACE).
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- NOAA Charting - Mississippi and Alabama
- Gulf of Mexico
- The U.S. Department of Commerce, National Oceanic and Atmospheric Administration (NOAA) tasked TerraSond to provide multibeam sonar and sidescan sonar survey services so that nautical charts of the survey area in Mississippi and Alabama could be updated.
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- Subsea Fiber Optic Cable System
- Northwest, U.S.A.
- A global provider of engineered electronic components contracted us to conduct a desk-top study and marine route surveys for the installation of a subsea fiber optic cable system spanning approximately 1,616 nautical miles.
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