Lumos provided base mapping, easement, geotechnical investigation, hydraulic modeling, improvement plans, specifications, construction management, construction inspection, materials testing, and construction staking for this $7.1 million sewer interceptor improvement project.
The Lumos survey approach to this project was very methodical with numerous checks and balances for quality control. The vertical component of this project was critical due to the flat slopes within the proposed design. Lumos prepared a project base map that combined aerial photogrammetry with ground surveying techniques to show the design team the surface topography, existing underground utility locations, NDOT right of way along the I-80 corridor, City of Reno right-of-way along the project alignment, and private boundary locations for the lift station design and easement acquisitions. Lumos began the project by establishing horizontal control using a combination of conventional and RTK GPS survey methods tying the project datum to Nevada State Plane Coordinates. Lumos ran closed differential level loops to achieve the highest degree of precision for the vertical control. Lumos set the aerial targets and took approximately 2,000 surface location measurements at critical locations throughout the project such as, pipe inverts, edge of roadways, surface utilities at all existing sewer manholes. Locations were given to our photogrammetry sub consultant and inserted into the design surface to exceed the typical map accuracy standards that can be achieved from aerial mapping only.
During the topographic map compilation period Lumos researched record mapping, NDOT right-of-way mapping, and reviewed preliminary title reports and deeds. Lumos tied critical boundary corners and right of way monumentation to establish and verify the proposed improvements would be constructed in the correct location. Lumos prepared exhibits for new easement acquisition across the adjacent UNR property. Working with a local contractor, we pot holed and surveyed subsurface utility locations. Lumos combined all this information into the project base map to be used by our design team as well as our subconsultants. During construction, survey staking services were provided to establish line and grade for the sewer alignment using the previously established high order control network. Staking for lift station structures, site utilities and grading was provided. Being able to provide surveying services from start to finish on this project provided quality control to the overall success.