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Current Projects: Chenega Bay - Resurfacing and Lighting
Project Name:
Chenega Bay : Resurfacing & Lighting
Location:
Chenega Bay, Alaska
Owner:
Alaska
Department of Transportation and Public Facilities
R&M
Survey Team:
Len C. Story, P.L.S.
Scott Nations, P.L.S.
Katy Su Lander-Pederson
Project
Year:
2003 - 2004
Description
of project:
Detailed topographic, planimetric
and boundary information was collected to support the Alaska
Department of Transportation & Public
Facilities engineering design effort for the Chenega Bay:
Resurfacing & Lighting project.
Primary horizontal control was established using Static
GPS techniques with two Trimble 5800 dual frequency receivers,
and one Trimble 5700 dual frequency receiver. The GPS vectors
were free adjusted by simultaneous least squares methods
using Trimble Geomatics Office software.
The project vertical datum is based
on a NGS OPUS solution which combined over 20 hours of
simultaneous observations to tie to NGS CORS stations "Kenai 1," "Potato Point 3," and "Hichinbrook
3." Orthometric heights were derived from the project control
using the geoid model GEOID99AK. Project elevations were
established and verified using differential leveling techniques.
The topographic and planimetric information was collected
using a combination of GPS RTK and conventional surveying
techniques.
The resulting mapping will help to further
improve the quality of life and safety in rural Alaska.
