Tierra worked with the Pima County Regional Wastewater Reclamation Department to expedite a wastewater pipeline located along Twin Peaks Road in Pima County, Arizona. This effort included three phases, the first of which was an expedited design and clearance process required to occur within a five-month time frame. Tierra staff analyzed project design plans for adherence to Pima County environmental regulations, Section 404 of the Clean Water Act, the Endangered Species Act, and Section 106 of the National Historic Preservation Act.
For the first phase, Tierra successfully limited the cost for vegetation mitigation efforts. Tierra also conducted an Endangered Species Assessment, Native Plant Inventory, Preliminary Jurisdictional Delineation, and a Class III cultural resources assessment of the project area. Phases 2 and 3 involved additional agency consultation, including with the Arizona State Land Department, and more extensive cultural resources mitigation.
