Monitoring ground water or soil vapor can be an important part of better understanding the environmental condition at a site initially or over time. Monitoring is also useful and may be required at the conclusion of remediation to confirm that cleanup to the regulatory required goal has been attained. IST has monitored hundreds of individual sites for these and similar reasons. IST has also monitored vapor evolution from landfills and integrated monitoring of various types into monitored natural attenuation remediation projects. IST has the equipment, personnel, training, and experience to monitor sites accurately, cost-effectively, and in compliance with regulatory requirements.