The Spooner Summit Pipeline Project consists of investigation and repair of three segments to the Incline Village General Improvement District’s 20-mile long secondary effluent export pipeline. Kjeldsen, Sinnock & Neudeck, Inc., as surveying consultant to HDR Engineering, Inc., provided services for existing conditions topography mapping and design infill surveys for approximately 7 miles at three separate locations along the 20-mile pipeline. The project involved establishing a complex primary survey control network in mountainous terrain spanning the length of the pipeline. A secondary network of over 70-photo control targets was established, followed by a least squares adjustment of the entire project control network. The aerial based topographic mapping was completed utilizing aerotriangulation techniques to bridge the models in the rough terrain and minimize ground surveys. This allowed for an independent QA/QC of the ground control, reduced the costs of field surveys and achieved the required National Mapping Accuracy Standards for 50-scale one foot contour design level mapping. The overall project is estimated at $20 million. This project received a merit award in the surveying and mapping category from the Consulting Engineers and Land Surveyors of California.