Profile: Columbia Inspection Consulting group employs a wide array of environmental services. Our ultra low sulfur testing is fast becoming a necessity for the storage and transportation industry. We use a variety of industry approved methods to accurately calibrate tanks and vessels. We can also calibrate vehicles such as trucks and trailers as well as larger vessels such as barges. We use liquid volume calibration and circumference measurements for external calibration data points. We are an ISO 9002 registered company.