Class III Inventory and Data Recovery for the Dead Horse Lateral Pipeline
CRA was retained to conduct a Class III cultural resource inventory of the proposed Dead Horse Lateral Pipeline in Grand County, Utah, which traverses lands administered by the Bureau of Land Management, Moab Field Office, and the Utah School and Institutional Trust Lands Administration. The inventory corridor was comprised of five separate components totaling approximately 208 acres. This inventory was conducted prior to activities related to the construction of the proposed pipeline. Through this inventory nine new sites and five previously identified sites were recorded and evaluated for inclusion in the National Register of Historic Places. Twenty-one previously identified sites were also revisited and condition assessments were performed.
Sixteen sites were recommended as eligible for inclusion in the National Register of Historic Places. In order to assess and mitigate adverse effects to the cultural resources that are eligible for inclusion in the National Register of Historic Places, CRA developed a data recovery plan and construction monitoring program. In executing this program, CRA ultimately completed data recovery of 12 eligible sites being transected by the pipeline. This data recovery consisted of intensive surface inventory, intended to collect consistent information from all of these sites in order to address specific research questions outlined in the Dead Horse Lateral Pipeline data recovery plan. The construction monitoring component consisted of both the archaeological monitoring of all project related subsurface disturbance within and around the Old Spanish National Historic Trail, as well as trenching near or on archaeological sites, and the open trench inspection of areas not within and around archaeological sites. In addition, an additional Class III inventory of six separate areas was conducted to address noted visual impact and/or safety issues with the originally designed pipeline route and to allow for a footprint expansion of the processing plant. Through these projects, adverse effects to the 12 eligible sites were mitigated, allowing the project to move forward.