International Transmission Company
Commonwealth performed environmental studies for 40 miles of double-circuit 120 kV transmission line right-of-way and prepared detailed permit applications for the Michigan Department of Environmental Quality (MDEQ).
Commonwealth biologists delineated the wetlands on a 100-foot-wide right-of-way across cropland and forested river bottoms between Lapeer and Tuscola in southeastern Michigan. Detailed wetland maps at a scale of 100 feet to the inch were prepared on aerial photographs.
Working with the engineering team, Commonwealth’s environmental staff transferred the wetland boundaries to the engineer’s plan and profile drawings. For the permit applications, Commonwealth plotted the location of the new transmission line structures on the wetland maps and enumerated the amount of fill the project would place in wetlands.
Sketches were made of the proposed mat road design and temporary bridges needed to enable equipment to cross streams. Commonwealth completed the MDEQ forms electronically and produced the text, tables, drawings, and maps to complete the application.
In response to concerns from the Michigan Endangered Species Coordinator, Commonwealth conducted a search for specific species on the Threatened and Endangered Species list. One species of vegetation that flowers in the fall required a separate search of wetland habitats during the September flowering season.
Archaeologists from Commonwealth Cultural Resources Group performed a records search for known archaeological and historical records along the transmission line right-of-way to determine if cultural resources might become a concern to the State Historic Preservation Officer.