Wastewater Investigation and New System
The City was discharging its treated wastewater to an unnamed stream about three-fourths of a mile south of its treatment plant. The stream is approximately two miles, flowing through two sloughs, before it reaches Antelope Lake, which had been designated as a warm water semi-permanent fishery. Because of this designation, The City of Clark was advised by the South Dakota Department of Environment and Natural Resources (DENR) that their current method of wastewater disposal would no longer be acceptable.
The City of Clark contacted IMEG to complete an investigation of its existing wastewater treatment system and evaluate alternatives.
A total retention facility was determined to be the viable option for the City. IMEG assisted the City to evaluate select sites and assist with the procurement of the selected site.
IMEG provided all survey, design, construction administration and construction engineering for a new 190 Ac total retention Wastewater Treatment Facility located approximately two and a half miles southeast of the City. IMEG also provided engineering services for the lift station upgrades, the 9000 feet of sewer
force main that travels to the new Treatment Facility, 56 Ac of 2 treatment cells, and 115 Ac of artificial wetlands.
IMEG also provided in house wetland services for this project by identifying, delineating, and mitigation existing wetlands. The project design also incorporated processes for completing the mitigation of designed wetlands.