Doull Sites Assessments Ltd. is a subsidiary of Capstone. The merger of the companies ensures Capstone can now offer DSA’s class-leading methodology and technology for identifying, quantifying, sampling and monitoring gas migration and surface casing vent flow with every abandonment project.

Besides having DSA’s services in-house to ensure the most accurate and precise data is used for project planning and abandonment programming, DSA continues to offer the same great service as always to it’s existing client base. Core service offerings include VentMeter™ real-time surface casing data monitoring, Gas Migration and Surface Casing Vent Flow testing and sampling, Directive 079 and Directive 013 services, and more. Please click on the logos below or reach out through the contact form for more information.