What is a REC (Recognized Environmental Condition)?
A Recognized Environmental Condition (REC) is defined by ASTM E1527-21 as the presence or likely presence of hazardous substances or petroleum products in, on, or at a property due to a release, or under conditions that indicate a material threat of a future release.
Understanding RECs
RECs are the primary finding of concern in a Phase 1 Environmental Site Assessment. When an environmental professional identifies a REC, it indicates potential contamination that typically requires further investigation through a Phase 2 ESA.
Three Scenarios That Define a REC
Existing Release
The presence of hazardous substances or petroleum products in, on, or at the property due to a release to the environment (e.g., documented soil contamination from a leaking underground storage tank).
Likely Release
The likely presence of hazardous substances or petroleum products due to a release or likely release (e.g., evidence of historical dry cleaning operations with no closure documentation).
Material Threat
Conditions that pose a material threat of a future release (e.g., deteriorating underground storage tank that hasn't leaked yet but poses imminent risk).
Types of RECs
The ASTM E1527-21 standard defines three categories of Recognized Environmental Conditions:
REC
Recognized Environmental Condition
An active environmental concern requiring further investigation. RECs typically trigger a Phase 2 ESA before property acquisition can proceed.
CREC
Controlled Recognized Environmental Condition
A REC that has been addressed to the satisfaction of a regulatory agency but remains subject to institutional or engineering controls (e.g., deed restrictions, groundwater use restrictions).
HREC
Historical Recognized Environmental Condition
A past release that has been addressed and received regulatory closure with no ongoing controls required. HRECs are essentially "resolved" environmental conditions.
Common Sources of RECs
Underground Storage Tanks (USTs)
Gas stations, heating oil tanks, and industrial storage tanks are among the most common REC sources. Tanks can leak petroleum products and hazardous substances into soil and groundwater.
Dry Cleaning Operations
Chlorinated solvents (PCE/TCE) used in dry cleaning frequently contaminate soil and groundwater. These chemicals are persistent and can migrate significant distances.
Auto Repair Facilities
Waste oil, hydraulic fluids, solvents, and automotive chemicals can contaminate sites. Floor drains may create direct pathways to soil and groundwater.
Manufacturing/Industrial Use
Historical manufacturing operations may have used heavy metals, solvents, and industrial chemicals that can persist in soil for decades.
Adjacent Contamination
Contamination from neighboring properties can migrate onto the subject property through groundwater flow or vapor intrusion pathways.
Regulatory Database Listings
Properties listed on EPA Superfund, state cleanup lists, leaking UST registries, or other environmental databases may indicate existing or historical contamination.
What Happens When a REC is Identified?
REC Documented in Phase 1 Report
The environmental professional documents the REC with supporting evidence and rationale.
Lender/Buyer Review
Stakeholders evaluate the REC and determine next steps for the transaction.
Phase 2 ESA Recommended
Most lenders require a Phase 2 ESA to investigate the REC further.
Sampling & Analysis
Soil, groundwater, and/or vapor samples are collected and analyzed.
Results Determine Path Forward
Clean results allow transaction to proceed; contamination may require remediation or price negotiation.
RECs and CERCLA Liability Protection
The Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) holds property owners liable for contamination cleanup regardless of fault. However, the "innocent landowner" defense provides protection for buyers who:
- Conduct "All Appropriate Inquiries" (AAI) before acquisition
- Identify existing contamination through proper due diligence
- Take reasonable steps to prevent future releases
- Cooperate with cleanup efforts if contamination is discovered
Frequently Asked Questions
What is a REC in a Phase 1 ESA?
A REC (Recognized Environmental Condition) in a Phase 1 ESA is the presence or likely presence of hazardous substances or petroleum products that may have been released to the environment. RECs indicate potential contamination that typically requires further investigation through a Phase 2 ESA before a property transaction can proceed.
What is the difference between REC, CREC, and HREC?
A REC is an active environmental concern requiring investigation. A CREC (Controlled REC) is a REC that has been addressed but remains subject to ongoing controls like deed restrictions. An HREC (Historical REC) is a past release that has been fully resolved with regulatory closure and no ongoing controls required.
Does a REC mean the property is contaminated?
Not necessarily. A REC indicates the presence or likely presence of contamination based on historical evidence, but actual contamination is not confirmed until a Phase 2 ESA collects and analyzes soil, groundwater, or vapor samples. Many properties with RECs are found to have no actual contamination after Phase 2 investigation.
Can I buy a property with a REC?
Yes, but most lenders will require a Phase 2 ESA to investigate the REC before financing. If contamination is confirmed, the transaction may still proceed with price adjustments, remediation requirements, or environmental insurance. Cash buyers have more flexibility but should still understand the potential liability.
What triggers a REC in a Phase 1 ESA?
Common REC triggers include: historical gas station or dry cleaner operations, underground storage tanks, regulatory database listings, stained soil or stressed vegetation observed during site inspection, manufacturing or industrial use history, and adjacent properties with known contamination.