The present city of Durango wastewater treatment plant was designed and built in the mid 1980s and placed in operation in about 1985-87. At that time, the plant had a total secondary capacity of 3 million gallons per day with the headwork’s and primary treatment of 6 million gallons per day. The original primary clarifier had a capacity of 3 million gallons per day, which was built in 1959, with an additional primary clarifier at 3 million gallons per day added.
So now I read that the plant has a capacity of 2 million gallons per day. My question is why is the plant rated capacity only 2 million gallons per day now? What happened to the missing 1 million gallon capacity?
Roger Miller
Howard City, Mich.
Editor’s note: Roger Miller is a former city of Durango wastewater treatment plant supervisor.
