superfund process national priorities list (npl) procedures
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Superfund Process
National Priorities List (NPL) Procedures
NPL Process
Site Assessment Program
– Referral to Removal Program
– NPL– Referral to State: VCP or
similar program– Referral to other Agency
Program, i.e., NRC– No Further Remedial
Action Planned (NFRAP)
NPL Process
NPL Sites– Subject to CERCLA– Will affect air, soil,
surface water, or groundwater
– Identified source– Human health or
environment affected– Threshold number, or
score, equal to or greater than 28.5
NPL Process
Health advisory issued by ATSDR – rare occasion
State requests listing – initial one time request; PA has previously utilized request
NPL Process
Site Assessment Process
– Preliminary Assessment (PA)
– Site Inspection (SI)– PA Score– Pre-score
NPL Process
Hazard Ranking System (HRS)
– HRS package development: Some items included
Population: ¼ mile – 4 miles
Sampling data Viable owners
– NPL proposal– NPL final
NPL Process
Final NPL site – Remedial Investigation/Feasibility Study
Removal Program activities – Immediate response to a site