How do SLs differ from cleanup standards?
SLs are generic screening values, not de facto cleanup standards. Once the Baseline Risk Assessment is completed, site-specific risk-based remediation goals can be derived using the BLRA results. The selection of final cleanup goals may also include ARARs and TBCs, as well as site-specific risk-based goals. In the Superfund program, this evaluation is carried out as part of the nine criteria for remedy selection outlined in the National Oil and Hazardous Substances Pollution Contingency Plan (NCP). Once the nine-criteria analysis is completed, the SL may be retained as is or modified (based on site-specific information) prior to becoming established as a cleanup standard. This site-specific cleanup level is then documented in the Record of Decision. • How often do you update the SL Table? It is anticipated that the SLs will be updated approximately semiannually. However, the beta release version may initially be updated sooner, to correct any errors or accommodate significant user feed
SLs are generic screening values, not de facto cleanup standards. Once the Baseline Risk Assessment is completed, site-specific risk-based remediation goals can be derived using the BLRA results. The selection of final cleanup goals may also include ARARs and TBCs, as well as site-specific risk-based goals. In the Superfund program, this evaluation is carried out as part of the nine criteria for remedy selection outlined in the National Oil and Hazardous Substances Pollution Contingency Plan (NCP). Once the nine-criteria analysis is completed, the SL may be retained as is or modified (based on site-specific information) prior to becoming established as a cleanup standard. This site-specific cleanup level is then documented in the Record of Decision.
