CASE STUDY New Mexico: SCADA System In April of 2015, Sandia National Laboratories (SNL) contracted with Montrose Air Quality Services (MAQS) to upgrade an existing SCADA system of a process wastewater facility. The system facilitates the owner’s compli- ance with discharge-permit issues required by the city of Albuquerque. SNL operates a water handling and sampling facility that captures pro- cess water and holds it for discharge into the city sewer. Once a holding tank is full, the water is sampled and submitted for laboratory analysis. The water tank is selected for discharge into the city water treatment system if it meets the quality criteria speci- fied in the discharge permit. The original SCADA system was in- stalled in 1994. The system provided the following function

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