CLIENT: American Crystal Sugar Company LOCATION: East Grand Forks, MN BACKGROUND American Crystal Sugar Company is an agricultural cooperative corporation owned by sugarbeet growers in Minnesota and North Dakota. The growers who grow and harvest the sugarbeets also own the company, including the factories that make sugar and other products. As part of its corporate mission, American Crystal Sugar is committed to reducing the overall effect of its operations on the environment

CLIENT: The City of Gering LOCATION: Gering, NE BACKGROUND Heat retention and odor control are critical aspects of effective wastewater treatment. The City of Gering, located in central Nebraska, had a cover on its treatment lagoon system to help provide heat retention in the winter months and odor control in the summer. However, the aging covers had numerous problems including excessive plant growth, ponding and sagging. The covers also required heavy equipment for any repai

In January 2007, the town of Troy, New Hampshire completed a lagoon upgrade designed to meet ammonia nitrogen limits imposed in their reissued NPDES discharge permit. The plant was required to meet a summer limit of 8.7 mg/l from May 1st through September 30th and a winter limit of 13.2 mg/l from October 1st through April 30th. The Troy lagoons were originally constructed in 1983 and consisted of three aerated cells utilizing a combination of an older style fine bubble tubing

Lemna Environmental Technologies, Inc. (LET) was distinguished for its "groundbreaking water infastructure design" in an American Council of Engineering Companies (ACEC) Magazine article, published in their March/April 2006 issue. The wastewater treatment plant highlighted in the ACEC article was an existing lagoon system that no longer performed to the new environmental regulations for ammonia in Jasonville, Indiana. The ammonia removal process, which is difficult in any was