Electrical System Transformation » Donohue & Associates, Inc. Client: Metropolitan St. Louis Sewer District Location: St. Louis, Missouri Donohue designed improvements to transform the electrical system at Lemay Pump Stations 1 and 2 for the Metropolitan St. Louis Sewer District. The improvements significantly enhanced the safety of District staff and protects equipment while substantially increasing reliability of the pump station to maintain flow to the 340-million-gallon-per-day Lemay Wastewater Treatment Plant. The $3.65 million project included arc-resistant switchgear, a low resistance grounding system, unique automated substation switching, and variable frequency drives with integral controls for the pumps. New switchgear inside of the new power distribution center offers substanti

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