superfund process national priorities list (npl) procedures
TRANSCRIPT
![Page 1: Superfund Process National Priorities List (NPL) Procedures](https://reader035.vdocuments.mx/reader035/viewer/2022081603/5697bffb1a28abf838cc13ec/html5/thumbnails/1.jpg)
Superfund Process
National Priorities List (NPL) Procedures
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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)
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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
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NPL Process
Health advisory issued by ATSDR – rare occasion
State requests listing – initial one time request; PA has previously utilized request
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NPL Process
Site Assessment Process
– Preliminary Assessment (PA)
– Site Inspection (SI)– PA Score– Pre-score
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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
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NPL Process
Final NPL site – Remedial Investigation/Feasibility Study
Removal Program activities – Immediate response to a site