40 CFR § 302 CERCLA § 102/103 & § 107 Compliance Engine

PFAS Superfund Hazardous Substance Compliance Matrix

Statutory 24-Hour NRC Reportable Quantity, ASTM E1527-21 REC Classification & Gore Factor PRP Apportionment

1. Regulated Compound & Release Scenario RQ EXCEEDED (>1.0 lb)

Max 24-Hour Uncontained Release (lbs)

1.45 lbs

Groundwater Detection Level (ppt)

18.5 ppt

Transaction / Due Diligence Type

Historical Facility Use (Years)

RQ Statutory Limit

1.00 lb / 24h

EPA NPDWR MCL

4.0 ppt

Hazard Ratio (GW/MCL)

4.63x

Soil Koc Mobility

Log 2.06

2. Statutory Compliance & Emergency Actions ENFORCEMENT WINDOW

NRC Call Window

< 24 Hours

SERC / LEPC Notice

Immediate

Written Follow-Up

30 Calendar Days

Max Civil Penalty

$69,733 / day

3. ASTM E1527-21 Due Diligence & BFPP Defense REC IDENTIFIED

Following federal designation as CERCLA hazardous substances, PFAS impacts qualify as formal Recognized Environmental Conditions requiring All Appropriate Inquiries (AAI) compliance.

Regulatory Pillar	Diagnostic Status	Statutory Defense & Impact
Phase I ESA REC Status	Active REC	CERCLA § 107 strict liability attaches to title holder.
BFPP Defense Eligibility	Preserved	Requires continuing obligations & non-interference.
Drinking Water Nexus	MCL Exceedance	Elevated plume migration to municipal receptors.
Re-Opener Risk (NPL)	High (HRS > 28.5)	Superfund National Priorities List scoring vulnerability.

4. Superfund Multi-Party Liability Allocator GORE FACTOR MODEL

Estimated Total Remediation Expense: $14,500,000 (Pumping, GAC/IX Resin, Plume Isolation)

Party Identity	Volume %	Toxicity Multiplier	Care & Cooperation	Calculated Share	Allocated Liability