Yosemite National Park · Laser scanning
Happy Isles & Vernal Fall
Topographic survey from the top of Vernal Fall down to Lady Franklin Rock, through Happy Isles and along the road back to Curry Village, captured with a 3D laser scanner.
Land surveying & mapping services
The jobs other
surveyors pass on.
Mountaintops, tunnels, 5,000-acre ranches and century-old corners. Licensed land surveyors who take on the hard jobs and get them right.
Crossing a remote alpine lake to recover original section corners.
1870
oldest original corner we've recovered
11,000′
summit control on Mammoth Mountain
Tunnels
underground control in an active decline
1/16″
movement we flag on monitored structures
The range
From 1800s stones to millimeter scans.
That mix of history and technology runs through everything we do, from a single corner to a year of monitoring on a heavy civil job.
ArchaeologyEngineering
100s of feet
Original 1800s section corners, found far from their record position.
Ranch & ALTA
Boundary, records of survey and ALTA surveys on 1,000 to 5,000+ acres.
< 0.01 ft
Precision construction layout for treatment plants, tunnels and buildings.
0.005 ft
Deformation monitoring of structures during heavy civil construction.
Recent work
Selected projects.
Sierra foothills · Underground
Exploration mine decline
Boundary survey of several hundred acres of private and BLM land and topographic mapping of the ground above. Underground, we set line and grade for the contractor's guidance lasers and deliver updated as-built drawings as the decline advances. It is now approaching 4,000 feet.
Heavy civil · Yosemite
El Portal & Tuolumne Meadows treatment plants
Control and construction layout for a national contractor on two Yosemite wastewater plants, including structural steel and precast buildings, plus deformation monitoring with a 0.005 ft (1/16″) reporting threshold.