REALITY
What physically existed in the building at the time?
PUBLIC TECHNICAL EXAMINATION · ARIZONA · IAQ EVIDENCE CONTINUITY
PRESERVING THE
BUILDING AS EVIDENCE
A building can change in minutes. The consequences of what happened inside it can be argued months or years later.
The technical problem is not simply whether someone collected a reading. It is whether enough trustworthy context survives for another qualified person—who was not there—to determine what actually existed, what changed, who was authorized to act, and what happened afterward.
THE CORE PROBLEM
The building does not remain still.
Filters are changed. Dampers move. Equipment cycles. Spaces are cleaned. Occupancy changes. Weather shifts. Materials are removed. Controls are rewritten. The original condition can disappear before anyone realizes how important it was.
THE LATER QUESTION
What actually happened here?
Later, an owner, consultant, attorney, insurer, physician, researcher, agency, contractor, or commissioning professional may need an answer. By then, the physical state they need to examine may no longer exist.
A SIMPLE SCENARIO
Monday existed. Friday looks different.
MONDAY
An occupied space shows an environmental condition that may matter.
TUESDAY
Measurements, photos, samples, trends, observations or consultant notes are created.
WEDNESDAY
Maintenance or an operational intervention changes the building.
FRIDAY
The condition has changed or disappeared.
SIX MONTHS LATER
Someone asks what actually existed on Monday and what justified the intervention.
At that point, memory is not enough. A screenshot may not be enough. A summarized report may not be enough. The building itself can no longer show Monday's reality. Something had to survive.
WHAT MAY NEED TO SURVIVE
A number without context is not the whole event.
TA14 is not declaring that every investigation must preserve every item below. The question is whether a defensible mechanism can determine which contextual elements are necessary for the later use being proposed.
01raw sensor or sample observations
02timestamp and duration
03physical location and zone identity
04instrument make, model and identifier
05calibration or verification status
06measurement uncertainty
07outdoor environmental context
08HVAC operating state
09occupancy and activity
10doors, windows and pressure relationships
11maintenance or intervention history
12chain of custody or record provenance
13subsequent edits or transformations
14professional interpretation
15decision authority
16executed intervention
17post-condition verification
THE CRITICAL DISTINCTION
Observation is not interpretation.
Interpretation is not authority.
Capability is not permission.
A sensor can observe. A consultant can interpret. A control system can execute. An owner can instruct. A regulator can impose obligations. Those are not interchangeable roles. Before evidence becomes consequence, the route between them must remain inspectable.
THE TA14 CONSEQUENCE BOUNDARY
Does this proposed consequence have sufficient Admissible Evidence, Applicable Authority, and Established Standing to become reality NOW?
RECORD
What was actually observed, measured, photographed, logged, sampled, or otherwise preserved?
CONTINUITY
Can the surviving record still be connected reliably to the original place, time, instrument, system state, and event?
ADMISSIBILITY
Is that evidence sufficient and appropriate for the specific consequence now being proposed?
BINDING
What applicable rule, obligation, contract, standard, policy, or authority actually attaches?
COMMIT
Has the final decision boundary been legitimately crossed?
EXECUTION
What action was actually caused in the real world?
OUTCOME
What changed, and what new reality must now be recorded?
WHY ARIZONA IS THE EXAMINATION SURFACE
Arizona is the location of the open technical question—not a shortcut to a legal conclusion.
This examination arose from Arizona-focused professional outreach concerning preservation of indoor-environmental conditions as evidence. TA14 is therefore keeping the question anchored to Arizona while deliberately avoiding an unsupported claim that Arizona law, regulation, or professional practice already requires the TA14 architecture described here.
THE JURISDICTION MATTERS
Applicable duties, standards, contracts, professional practices and legal consequences can depend on the jurisdiction and the specific use of the evidence.
THE TECHNICAL QUESTION REMAINS OPEN
What must be preserved depends on what a later decision is asking the surviving record to prove.
THE INVITATION IS SPECIFIC
Arizona practitioners are invited to identify the established mechanism, correct the framing, or submit a better evidentiary path.
WHERE THE RECORD CAN FAIL
The risk is not only a bad sensor.
CONTEXT LOSS
The value survives, but the location, HVAC state, occupancy, outdoor condition, or instrument context does not.
INTERPRETATION COLLAPSE
A later conclusion is treated as though it were the original raw observation.
AUTHORITY COLLAPSE
A technically reasonable recommendation is treated as automatic permission to cause a real-world consequence.
OUTCOME LOSS
An intervention is recorded, but nobody preserves whether it actually produced the claimed result.
THE PROFESSION IS INVITED TO CHALLENGE THIS
We are not asking for agreement.
We are asking for an answer that survives examination.
If an established standard, protocol, evidentiary method, chain-of-custody practice, commissioning record, forensic procedure, or legal mechanism already solves this problem, identify it. If TA14 has framed the problem incorrectly, show where. If the architecture is incomplete, improve it. If something better already exists, bring it forward.
Use the governed submission surface for an independent review, evidence challenge, factual correction, technical comment, replication request, or other attributable response. A submission remains attributable to its submitter and does not become a TA14 finding merely because it is received.
Environmental consultantsIndustrial hygienistsBuilding scientistsMechanical engineersCommissioning professionalsControls professionalsAttorneysInsurersOwners and operatorsResearchersGovernment agenciesStandards organizations
THE QUESTION STILL STANDING
What must survive so yesterday's environmental reality can still be examined tomorrow?
And before that surviving evidence causes anything in the real world: does the proposed consequence have sufficient Admissible Evidence, Applicable Authority, and Established Standing to become reality NOW?