Choose Field Studio Mode

Start with a single tree, map overlapping root zones across a multi-tree stand, or mint a verifiable practitioner credential.

1-Tap Bioregional Field Presets (Central Texas & Rogue Valley, Oregon)

Load one of five verified Texas or Oregon reference trees, or enter your own field measurements below.

Step 1

Municipal Tree Ordinance Lookup (Central Texas & Rogue Valley, OR)

Select Municipal Jurisdiction Evaluates statutory protection, heritage thresholds, Oak Wilt pruning windows, and mitigation schedules across 8 verified jurisdictions.

Step 2

Quick Field Walk: 6 Essential Measurements

Tree Tag / ID Field tag (e.g., ATX-QV-101)

Please enter a tree identifier tag.

Bioregional Species Preset Auto-fills scientific & guild fields

Common Name Regional common name

Scientific Binomial Genus species

Stem Measurement Rule Single trunk or multi-stem rule

Trunk DBH (Inches) Diameter at 4.5 ft (0.5 to 500 in)

DBH must be between 0.5 and 500 inches.

Computed DBH (cm) Synced metric diameter (cm)

Cavity Sound Shell Ratio (t/R) 0.00 to 1.00 (>= 0.30 = stable shell)

Enter a ratio between 0.00 and 1.00.

Condition Class (ISA / CTLA) Canopy & structural vigor

Site Growth Context (FCIN12) John White veteran age factor

Tree Height (m) Total height (0.5 to 150 m)

Soil Infiltration (mm/hr) Ring infiltrometer rate

Soil Organic Matter (%) Topsoil dry weight SOM %

Recommended Stewardship Plan Evidentiary gate blocks unjustified removal when t/R >= 0.30

Proposed Pruning Date (Oak Wilt Check) Flags seasonal Texas Oak Wilt window

CRZ Disturbed (%) Root zone construction impact %

Simulate Whole-Tree Removal Liability Check to evaluate immediate permit & cash-in-lieu mitigation fee.

Lift the Veil: GPS Plus Code, Taxon ID, Crown Dimensions & Tomogram URI

Assessment Date ISO date (YYYY-MM-DD)

Please select an assessment date.

Global Plus Code (Location) 8 chars + 2 to 7 chars (e.g., 86247784+VP)

Enter a valid Global Plus Code (e.g., 86247784+VP).

iNaturalist Taxon ID Positive integer taxon anchor

Crown Spread N-S (m) North-South dripline (m)

Crown Spread E-W (m) East-West dripline (m)

Live Crown Ratio (%) 0 to 100%

Shigo CODIT Wall Response Compartmentalization rating

Sonic Tomogram or Resistograph Evidence URI Instrument scan URI required when proposing removal of a protected specimen

Lift the Veil: Full 5-Domain RCA Forensic Studio (ISA TRAQ Risk Matrix, 150 psi AirSpade Geometry, Soil Microbiome Lab, Native Understory Guild & 5-Year STIM Schedule)

Fine-tune construction grading tolerances, ISA TRAQ risk matrices, supersonic AirSpade trench dimensions, rhizosphere microbiology, understory companion guild notes, and practitioner signature credentials.

Cut/Fill Depth Inside 1/2 CRZ (in) Typically max 4 in allowed

Impervious Cover in CRZ (%) Typically max 20% to 25%

Proposed Crown Removal (%) ANSI A300 max 25% per season

Root Flare Diameter (cm) Basal flare for AS 4970 SRZ

Root Flare Burial Depth (cm) Soil or mulch burial above flare

Stem-Girdling Root (SGR) Count Number of compressing roots

SGR Compression Severity Circumference compressed

AirSpade Radial Trenches Decompaction spokes

Trench Length (m) Mean spoke length (m)

Trench Width (cm) Default 30 cm

Trench Depth (cm) Default 35 cm

Root Collar Basin Radius (m) Excavation radius around flare

AirSpade Pressure (psi) Supersonic nozzle pressure

Soil Bulk Density (g/cm3) 0 to 15 cm horizon (0.1 to 2.65)

Rhizosphere Soil pH pH (2.0 to 11.0)

Fungal-to-Bacterial Ratio (F:B) Biomass ratio

Dominant Mycorrhizal Guild Host root association

Soil Lab Sample ID Laboratory chain-of-custody ID

Native Reference Ecosystem Target understory plant guild

ISA TRAQ Inspection Level

Primary Part of Concern

Likelihood of Failure

Likelihood of Impact

Failure & Impact (Matrix 1)

Consequences of Failure

Overall TRAQ Risk Rating

Post-Remediation Residual Risk

5-Year STIM Ecological Recovery Hypothesis Testable 60-month soil and canopy trajectory with measurable targets

Attesting Practitioner Name Printed on the client determination & signature block

Practitioner Credential & Qualification ISA / ASCA / Oak Wilt / State registration

Answer First

Plain-Language Care Verdict, 3-Stage Phased Triage & Soil Sponge Capacity

Output A

Municipal Ordinance Verdict, Mitigation & Root Protection Map

Shareable Assessment Permalink (#oa1=...) Versioned URL fragment encoding jurisdiction, species, DBH, work type, disturbance, and site context.

Spatial Protection Zone Visualization Layer

Output B

Allometric Ecosystem Services, Holobiont Valuation & 5-Year Practice Economics

Lift the Veil: Live LEO-RCA Epistemic & Anti-Liquidation Oracle Verifier (6-Slot Provenance Anchors, Self-Audit Gate & Conflicted Chainsaw Bid Sabotage Test)

Inspect the machine-auditable 6-slot LEO-RCA brief below. Every numeric figure carries an explicit [[oracle:...]] provenance anchor, unverified municipal sub-sections reconcile automatically in the STATUS: header, and the deterministic verifier blocks conflicted removal narratives when t/R >= 0.30.

Live 6-Slot LEO-RCA Brief (Edit any claim or number to test deterministic verification)

Output C

GeoJSON Export, ASCA/RCA Evidentiary Report & Counter-Notice

Mode 2

Multi-Tree Stand Builder & 1-ft Spatial Root Zone Union Engine

Evaluates overlapping Critical Root Zones (CRZ) on a 1-ft Cartesian grid using unionRootZoneArea() so soil decompaction, compost, and ramial woodchip prescriptions are never double-counted across multi-tree motts and groves.

Parcel Footprint Area (m2) Default: 4047 m2 (1.0 acre) for Sanctuary Scorecard canopy rollup

Add Specimen Append a new specimen to the stand inventory

Preset Stand Restore the 4-tree Live Oak / Pecan / Post Oak mott preset

Tree Tag	Species	DBH (in)	Local X (ft)	Local Y (ft)	RCA Diagnostic Template	Action

Spatial Union

1-ft Grid Spatial Root-Zone De-Duplication Metrics & Multi-Tree SVG Map

Multi-Tree Stand Root-Zone Overlap Map (1-ft Grid Union)

Sanctuary Scorecard

Open Sanctuary Scorecard 5-Dimension Parcel Rollup

Open Sanctuary Scorecard 5-Dimension Ecological Rollup & Holobiont Equity Summary
Sanctuary Scorecard Dimension	Rollup Score (/100)	Ecological Tier	Primary Biophysical Driver & Standard

Open Arbor Evidentiary Determination Report

ANSI A300 Part 5 | ISA BMP | AS 4970 | RCA-Spec v2.0 | Dataset Version 2.0.0 (Last Verified: 2026-10-23)

Practitioner Evidentiary Attestation & Signature Block

Practitioner Name: George Steward | Credential: ISA Certified Arborist TX-362025A / Oak Wilt Qualified

Practitioner Signature: ___________________________ Date Signed: _______________

Shared Tree Assessment Loaded

Open Arbor Field Studio

Choose Field Studio Mode

1-Tap Bioregional Field Presets (Central Texas & Rogue Valley, Oregon)

Municipal Tree Ordinance Lookup (Central Texas & Rogue Valley, OR)

Quick Field Walk: 6 Essential Measurements

Plain-Language Care Verdict, 3-Stage Phased Triage & Soil Sponge Capacity

Municipal Ordinance Verdict, Mitigation & Root Protection Map

Allometric Ecosystem Services, Holobiont Valuation & 5-Year Practice Economics

GeoJSON Export, ASCA/RCA Evidentiary Report & Counter-Notice

Multi-Tree Stand Builder & 1-ft Spatial Root Zone Union Engine

1-ft Grid Spatial Root-Zone De-Duplication Metrics & Multi-Tree SVG Map

Open Sanctuary Scorecard 5-Dimension Parcel Rollup

Open Badges 3.0 / W3C Verifiable Credential (RCA-Verified) Minter

Live Cryptographic Tamper-Detection Simulator (SHA-256 Content Digest)

Open Arbor Evidentiary Determination Report

Practitioner Evidentiary Attestation & Signature Block

Send Tree Care Brief to Certified Arborist