Remediation activities require reliable analytical data when removal and treatment operations are being performed. Traditionally, quality information was only available from established laboratories at off-site locations. Although the assay results were accurate and precise, turnaround time was not prompt. The delay of these results has resulted in the site work not being as efficient or effective as could be.Recently, great strides have been made in field analytical equipment, which has been designed to provide data of similar quality as permanent laboratories. To examine this point, samples were collected at a site undergoing remediation for analysis both on site and at a permanent laboratory. The data generated from a field transportable gas chromatograph/mass spectrometer (GC/MS) was compared to that produced by a GC/MS stationed in a fixed laboratory. The field transportable GC/MS was established on site and analyzed air samples collected on charcoal adsorbent tubes. Additional collocated air samples were collected for analysis by a GC/MS located in a permanent laboratory.