Environmental Due Diligence · Texas
Phase I Environmental Site Assessments for Commercial Real Estate
TXB Enviro helps lenders, investors, and CRE professionals identify environmental risk before closing — with clear, defensible reports delivered on schedule.
Services
Environmental due diligence, done right the first time
Every assessment is performed start to finish by an Environmental Professional — not handed off to junior staff — and written to hold up under lender and legal scrutiny.
Phase I Environmental Site Assessment
A commercially prudent inquiry designed to identify recognized environmental conditions (RECs) at the subject property, conducted in accordance with ASTM E1527-21 — the standard EPA recognizes as satisfying the All Appropriate Inquiries (AAI) Rule (40 CFR Part 312), a prerequisite for CERCLA landowner liability protections.
- Site reconnaissance and area inspection
- Interviews, questionnaires, and review of provided documents
- Historical research — aerials, topographic maps, city directories, Sanborn maps
- Federal, state, tribal, and local regulatory records (NPL, SEMS, RCRA, LUST/PST, and more)
- Clear findings and practical conclusions, without unnecessary delays or surprises

Reliance Letters
Reliance for additional parties — including lenders and participating institutions — issued so more than one stakeholder can rely on a single report.
Report Updates
Under ASTM E1527-21, a Phase I ESA is presumed viable for 180 days and may be extended to one year when key components are updated. TXB provides updates that keep an existing report usable for closing.
Property Types
Assessed across every major commercial asset class
Each asset class carries its own environmental profile — dry cleaners in a strip center, hydraulic lifts in a warehouse, underground tanks at a fueling site. Knowing where to look is the difference between a clean report and a missed condition.








Site Conditions
What gets looked at on site
Photographs from TXB Enviro assessments. Site reconnaissance is where a REC is most often identified — or correctly ruled out — and every observation is documented and carried through to the findings.
Drum & Container Storage
Bulk containers, secondary containment, labeling, and staining — checked against the property's hazardous materials handling and RCRA generator status.
Petroleum & Hazmat Dispensing
Interior dispensing racks, totes, and chemical storage — reviewed for spill history, containment adequacy, and floor drain connections.
Fueling Systems & USTs
Dispenser islands, fill ports, and vent lines cross-checked against TCEQ PST and LUST records for the site and adjoining properties.
Car Washes & Separators
Oil/water separators, wash bay sumps, and reclaim systems — common sources of subsurface impact when maintenance records are thin.
Manufacturing & Process Areas
Production floors, solvent use, compressors, and clarifiers — evaluated alongside interviews and any available permits or waste manifests.
Warehouse & Storage Interiors
Slab condition, trench drains, hydraulic lifts, transformers, and prior tenant fit-out — the details that reveal how a building was actually used.
Process
From authorization to report, a straight line
Turnaround options are quoted in every proposal — available in as few as 10 business days from notice to proceed.
Proposal & Authorization
A fixed-fee proposal with turnaround options. Your signature is the notice to proceed — no retainers*, no surprises.
Records & History
Regulatory database review plus historical sources — aerials, topos, city directories, and Sanborn maps — covering the property and adjoining sites.
Site Reconnaissance
On-site inspection of the property and surrounding area by the Environmental Professional, with owner and occupant interviews.
Report & Support
A clear, well-organized report identifying any RECs, delivered on schedule — with the EP available to answer questions after delivery.
* Payment terms are client-specific and stated in your proposal.
Why TXB Enviro
The experience of a large firm, the accountability of a single point of contact
When you call TXB Enviro, you talk to the Environmental Professional who walks the site, reviews the records, and signs the report.
* Turnaround is site-dependent and confirmed in your proposal.
About
Principal-led, by design
TXB Enviro, LLC is an independent environmental consulting firm based in Dallas, Texas, focused exclusively on environmental due diligence for commercial real estate transactions.
The firm's principal is an Environmental Professional as defined at 40 CFR § 312.10, with more than 15 years of environmental consulting experience and over 1,000 Phase I Environmental Site Assessments completed across Texas and beyond. That background also includes Phase II subsurface investigations, soil management plans, and stormwater pollution prevention plans — depth that informs every Phase I finding and conclusion.
Because the firm is principal-led, the same Environmental Professional handles your project from the first record pulled to the final signature. There is no hand-off to junior staff, and no variation in standard of care from one report to the next.
- Firm
- TXB Enviro, LLC — Texas limited liability company
- Standards
- ASTM E1527-21 · AAI Rule (40 CFR Part 312)
- Insurance
- Commercial General Liability, Contractors Pollution Liability, and Professional Liability — certificates available on request
- Key Personnel
- Principal — Environmental Professional qualified under 40 CFR § 312.10; statement of qualifications and résumé furnished on request
Coverage Area
Based in Dallas. Working across Texas.
Contact
Request a proposal
Send the property address and a brief description, and you'll receive a fixed-fee proposal with turnaround options — typically the same business day.
Proposal request
Fields marked * are required. Everything else helps sharpen the quote.
Dallas, TX 75206
Email the property address, current use, approximate acreage, and your target closing date. If a lender will rely on the report, note the institution so reliance language can be quoted up front.