Stockwell Engineers, Inc. provided civil engineering services for the development of a 161 acre ethanol facility north of Mitchell. The services provided included a topographic and boundary survey, site design, construction staking, assisting with permit applications and a post-construction ALTA survey. The plan documents were prepared in a design/build format.
The infrastructure design for the 65 MG facility included a sanitary sewer system with septic tanks and mound drain field, water main loop, potable water service, greensand ponds and process water discharge. In addition an expansive storm sewer/drainage culvert system with on-site detention ponds as well as a lift station and force main to provide off-site storm water discharge was developed. Site improvements comprised of extensive grading, an asphalt truck route, a 27-stall visitor parking lot, gravel access roads, synthetic lined ponds, and the development of more than 19,600 feet of siding, loadout, storage and loop tracks.
The placement of the plant on the site facilitated the development of a loop track to provide adequate on-site rail car storage. Special attention was taken to maintain minimum design standards for degree of curvature while capitalizing on the limits of the site both for the initial development as well as future expansion. The design of the various rails also included No. 11 turnouts, derails and crossings
