UPDATE — NOAA's Office of Response and Restoration (OR&R) developed Screening Quick Reference Tables, or SQuiRTs, in 2008 to help evaluate potential risks from contaminated water, sediment, or soil. The cards presented a compilation of screening concentrations for inorganic and organic contaminants in various environmental media. They also included guidelines for preserving samples and for analytical technique options.

As of April 4, 2024, OR&R has decided to remove the SQuiRT cards from this website because they are out of date. More recent literature should be considered in contaminant evaluation. For example, OR&R's Chemical Aquatic Fate and Effects (CAFE) Database provides a more current source of chemical/oil/dispersant environmental fate and effects information.

Questions: Please direct any questions or comments about the SQuiRTs to the OR&R webmaster.