The Commission utilizes a professional reliance model in some specific areas of its regulation of oil and gas activities. Engineering designs must be signed and sealed for use in B.C. by a member of Engineers & Geoscientists BC (formerly APEGBC). The requirements apply to the design, construction, operations/maintenance and decommissioning stages of projects. This professional reliance model is supplemented at the application stage by a design review process performed by Commission professional staff or third party subject matter experts. Additionally, targeted field inspections are undertaken during the construction, commissioning, operations, and decommissioning phases.