STT Enviro Corp., formerly Semcan Inc., is a Canada-based environmental engineering company. The Company provides services in design, assembly and support of handling systems for the reagents (such as lime, soda ash and magnesium oxide) required for environmental cleanups in mining, oil and gas and other industrial applications. The Company also provides tanks and silos for storage. The Company operates through three business units: STT Enviro Corp Systems, STT Enviro Corp Tanks and STT Enviro Corp Solutions. The Solutions provides by the Company include Preventative Maintenance Service Contracts (PMSC], Mechanical Audit & System Review (MASR) and System Optimization Study (SOS).