Question # 575

575. A covered treatment, storage, and disposal (TSD) facility receives a waste from off-site that contains chromium. The waste profile indicates only that the waste stream contains chromium. The waste profile does not indicate if the waste contains elemental chromium or a chromium compound. Can the TSD make threshold determinations based on the assumption that the chromium contained in the waste stream is present as elemental chromium?
A facility must use the best readily available information to determine which listed chemicals or compounds are being manufactured, processed or otherwise used. If the waste profile is incomplete or inaccurate, the facility should look to other sources of information that it believes are more representative of the needed information. Facilities should document assumptions and calculations used in making their determinations.