Twin Falls City has been a prominent community in southern Idaho for over 100 years. Some of their existing infrastructure was outdated and did not have the capacity to keep up with increasing development. We were hired to redesign a mile-long section of culinary line to bring it in accordance with growing capacity and to meet state requirements. The existing line ranged from 4 inches to 8 inches. We upsized the line to a 12-inch C-900 PVC pipe that followed along the existing alignment.
Before any design work was initiated, we worked with a contractor to drill test holes every 100 feet along the proposed alignment to map out the depth of bedrock. This was done to evaluate the possible existence of shallow bedrock that could have become an issue during construction. This allowed us to get a more accurate cost estimate for the project and decrease risk to the contractor and the client.
We coordinated with the Eastern Idaho Railroad (EIRR) to complete a railroad crossing application. As part of the application, EIRR wanted Twin Falls to create a list of all crossings along the railroad alignment within the city limits. To prevent significant delays to the project, we assisted in negotiating with EIRR that the city would begin working on compiling the requested list over time to allow the crossing application to be accepted. We also assisted Twin Falls in coordination with other utility companies for alignment evaluation, Twin Falls Canal Company for a canal crossing, city officials to meet city requirements, and state representatives for permitting to meet the clients’ needs and ensure that the system met state regulations.