Topographic Surveys in Rodeo, CA

Rodeo grew up fast in the 1890s, and its compact downtown grid near the San Pablo Bay shoreline still reflects that era: older cottages on small lots, narrow county-maintained streets, and utility patterns that predate modern engineering records. Ringing the old grid are postwar tracts on gentler terrain, and beyond them the community edges toward the shoreline margins and the adjacent refinery complex. Each of those settings asks something different of a topographic survey, and all of them are served well by terrestrial laser scanning. On the tight downtown lots, our Trimble scanner captures the full site — ground, structures, walls, curbs, and overhead lines — from a few setups without laying a tape across a neighbor's yard. On the tracts, it delivers the fine grade resolution that drainage retrofits and additions need.

Near the waterfront, elevation takes on regulatory weight. Portions of the bay margin in this part of the county fall within mapped liquefaction zones under California's Seismic Hazards Mapping Act, and low-lying parcels may need finished-floor and site elevations referenced to a recognized vertical datum for flood and geotechnical review. We establish that datum control as part of every shoreline-margin topo, so the contours, spot elevations, and digital terrain model we deliver plug directly into your engineer's analysis rather than requiring a second survey later. Because Rodeo is unincorporated, permit review runs through Contra Costa County, and county plan checkers see our map format regularly.

Deliverables include one-foot contours, a vegetation-filtered DTM, DWG/DXF base maps, and the point cloud. Deed and map research for Rodeo's older grid — where lot dimensions on the ground do not always match the 1890s paper — goes through the Contra Costa County Recorder and County Surveyor offices in Martinez, and we flag any boundary questions the records raise before they become design problems.