2-ATT B Scope of Work BD26-24 Groundwater Monitoring Wells.pdf

This Scope of Work details a groundwater monitoring well installation project for a site located near Middle Otter Creek, approximately 7 miles northwest of Randolph, Utah. The project requires the installation of 10 total wells (five wells at each of two nearby sites), with wells to be drilled 5 to 20 feet deep using environmentally sensitive methods. Specific requirements include using a tread-mounted rig or small OHV, passing through an 11-foot-wide gate, and installing 1.0-inch diameter PVC casing with 1- to 2-foot prepack screens. The wells will be positioned 10 to 45 feet from the stream bank, with the goal of installing screens in a sand and gravel layer at the same elevation as the stream bed to evaluate surface water-groundwater interactions.

The project mandates that the vendor hold a valid Utah Driller's License and use track-mounted drilling equipment capable of direct push or rotary drilling. Technical requirements include the ability to install wells in unconsolidated gravel/cobbles at 5 to 10 feet below land surface, coordinate with an on-site geologist, and ensure wells meet design specifications. Deliverables include successful well installation, collection of sediment cores, documentation of field modifications, and a final report summarizing installation methods and observations. The vendor must also provide details about their drill rig, equipment, and prior experience with similar site installations.