Phase I Environmental Site Assessment (ESA) — NM and AZ ASTM E1527-21
A Phase I ESA is required by virtually all commercial lenders before financing a real estate transaction and by federal agencies before site work. The current standard is ASTM E1527-21. Inspections Plus conducts Phase I ESAs for construction lenders, developers, and property owners in New Mexico and Arizona.
What a Phase I ESA Covers (ASTM E1527-21)
The ASTM E1527-21 Phase I Environmental Site Assessment standard consists of four components that together constitute the "all appropriate inquiries" (AAI) required for CERCLA liability protection and commercial lending requirements:
Records Review
- Federal database search (CERCLA, RCRA, UST, NPL, CORRACTS)
- State NMED and ADEQ database searches
- Historical aerial photograph review
- Sanborn fire insurance map review (major urban areas)
- Historical topographic map review
- City directory searches for occupant history
Site Reconnaissance
- Visual observation of all accessible site areas
- Identification of staining, stressed vegetation, fill areas
- Underground storage tank identification (vents, fill pipes, dispensers)
- Hazardous materials observation (drums, tanks, chemical storage)
- Drainage and surface water feature observation
- Adjacent property observations for off-site source identification
Interviews
- Current owner/occupant interview
- Key site personnel with historical knowledge
- Local government agency contacts (fire department, planning)
- Previous owner/occupant contact where available
Report
- ASTM E1527-21 compliant findings and conclusions
- RECs, CRECs, and HRECs classification
- Opinion regarding environmental conditions
- Recommendations for Phase II investigation (if warranted)
- Data gaps documentation
- Qualifications and certifications
When Phase I ESA Is Required
NM SHPO and Tribal Consultation Considerations
New Mexico has unique regulatory considerations that national Phase I firms often overlook:
NM State Historic Preservation Office (SHPO)
Federal nexus projects require Section 106 consultation with NM SHPO to identify cultural and historic resources. SHPO review is separate from Phase I ESA but often conducted simultaneously for federal projects. Inspections Plus coordinates SHPO consultation for clients with federal nexus projects.
Tribal Consultation
New Mexico has 19 Pueblos, the Navajo Nation, three Apache tribes, and the Ute Mountain Ute Tribe. Projects within or near Tribal territories may require Tribal Historic Preservation Office (THPO) consultation as part of federal permitting. Inspections Plus has 20 years of NM Tribal consultation history.
Typical Timeline
Phase I ESAs typically require 2–4 weeks from authorization to report delivery. This includes database search turnaround (typically 5–7 business days), site visit scheduling, records review, and report preparation. Rush delivery (10–14 business days) is available for time-sensitive transactions — contact us with your closing date.
When Phase II ESA Is Triggered
A Phase I ESA that identifies Recognized Environmental Conditions (RECs) may require subsurface investigation through a Phase II ESA. Common REC triggers include underground storage tanks, dry cleaning operations, fuel distribution, and industrial chemical use.
Phase II ESA — Subsurface Investigation Guide20 Years of NM/AZ Local Records Access
National ESA firms order standardized database packages and conduct remote research. Inspections Plus supplements that foundation with 20 years of NM and AZ local records relationships:
- NM State Land Office historical tract ownership records
- NMED Groundwater Quality Bureau leaking UST and spill databases
- BernCo and Bernalillo County assessor historical records
- CABQ Development Services permit history for Albuquerque parcels
- NMDOT right-of-way history for highway-adjacent parcels
- NMOSE (Office of the State Engineer) water rights database for agricultural parcels
Ready to get started?
Inspections Plus provides transparent, itemized estimates — not fixed-price contracts. Call or submit a request and we'll follow up within 1 business day.
Frequently Asked Questions
Free Site Assessment
We research your parcel data, permit requirements, and regulatory obligations at no cost. A compliance specialist follows up within 24 hours.
Get Your Free Assessment