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LANL IP Decision tree regarding "Class 2" issues (TAL exceedences).                   TALs exceeded? NO For an individual site, execute and meet protocols for exiting permit coverage. Exit permit for this site.     YES Contamination due to off-site sources? NO Is there adequate monitoring data to demonstrate the site causes TAL exceedences? NO Are the available data from stormwater? YES Is storm flow probably in the future? YES Collect more stormwater data and compare to TALs. YES YES NO NO Can run on data be collected? Are contaminants PCBs or others that are cover in the "Demonstration Protocols"? Are available data from soils only or are there no data? NO Collect new of use existing soils data and proceed to TCLP/Soil Partitioning Model. Do soils data using TCLP/Soil Partitioning Model indicate TAL exceedence? NO NO YES NO YES NO Are PCBs the contaminant? Corrective action necessary. Can stormwater be collected in a reasonable timeframe? Execute and meet protocols for exiting permit coverage Corrective action necessary. NO YES YES Are metals with site-specific hardness data or adj. gross alpha< background report levels? Compare data to background report May 2012. Collect stormwater data and compare to TALs.     NO YES Are metals with site-specific hardness data or adj. gross alpha > background report levels? Continue monitoring.       YES Corrective action necessary.