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Verified Bioregional Field Cases · Zero-JS Crawlable Evidentiary Determinations · RCA-Spec v2.0

Bioregional Reference Case Gallery (Central Texas & Rogue Valley, Oregon)

Five benchmark municipal tree determinations pre-rendered at build time directly from the certified ECMAScript core engines. Every case page includes plain-language stewardship triage, full statutory citations, inline vector <svg> root protection maps, provenance boundaries, and cryptographic SHA-256 digests with JavaScript disabled.

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5 Benchmark Cases

Cross-Jurisdictional Evidentiary Comparison Matrix

Compare municipal protection tiers, ANSI A300 and AS 4970 root zone radii, permit determinations, replacement mitigation liabilities, and 200-year Holobiont Biological Equity across Austin, Georgetown, Liberty Hill, Ashland, and Medford.

Five Bioregional Reference Determinations in the Open Arbor Static Case Gallery
Specimen & Tag Jurisdiction & Primary Citation Protection Status & DBH CRZ / SRZ & Mattheck t/R Permit Verdict & Liability 200-Yr Holobiont vs. CTLA Inspect or Hydrate
ATX-QV-101
Quercus virginiana (Live Oak) 		Austin, TX
tx-austin · City of Austin Land Development Code (LDC) Title 25, Chapter 25-8, Subchapter B (Tree and Natural Area Protection); Environmental Criteria Manual (ECM) Section 3 		Heritage
30 in (76.2 cm) 		CRZ: 30 ft (9.14 m)
SRZ: 10.77 ft (3.28 m) · t/R: 0.38 		Permit Required
If destroyed: $18,000 (90 in) 		$218,609
CTLA: $13,699 (15.96x)
GTN-CI-204
Carya illinoinensis (Pecan) 		Georgetown, TX
tx-georgetown · Georgetown Unified Development Code (UDC) Chapter 8 (Tree Preservation, Landscaping, and Fencing) 		Heritage
27 in (68.58 cm) 		CRZ: 27 ft (8.23 m)
SRZ: 10.19 ft (3.11 m) · t/R: 0.46 		Permit Required
If destroyed: $8,100 (81 in) 		$124,448
CTLA: $13,432 (9.27x)
LBH-QS-309
Quercus stellata (Post Oak) 		Liberty Hill, TX
tx-liberty-hill · Liberty Hill Unified Development Code (UDC) § 6.07.01 (Tree Preservation and Mitigation), Ord. 09-O-02 / 22-O-04.06-01 		Protected
20 in (50.8 cm) 		CRZ: 20 ft (6.1 m)
SRZ: 9 ft (2.74 m) · t/R: 0.32 		No Permit Triggered
If destroyed: $4,500 (40 in) 		$69,172
CTLA: $5,127 (13.49x)
ASH-QG-105
Quercus garryana (Oregon White Oak) 		Ashland, OR
or-ashland · Ashland Municipal Code (AMC) Chapter 18.4.5 (Tree Preservation and Protection), Chapter 18.5.7 (Tree Removal Permits), and AMC 18.3.10.090.D (Hillside Development) 		Heritage
41.34 in (105 cm) 		CRZ: 41.34 ft (12.6 m)
SRZ: 12.35 ft (3.77 m) · t/R: 0.34 		Permit Required
If destroyed: $6,201 (82.68 in) 		$427,039
CTLA: $23,273 (18.35x)
MFD-PP-208
Pinus ponderosa (Ponderosa Pine) 		Medford, OR
or-medford · Medford Municipal Code (MMC) Sections 6.700 to 6.750 (Public and Street Trees); Medford Land Development Code (MLDC) § 10.780 (Landscaping); City of Medford Tree Protection Guidelines (April 2026) 		Heritage
26 in (66.04 cm) 		CRZ: 26 ft (7.92 m)
SRZ: 10.19 ft (3.11 m) · t/R: 0.41 		Permit Required
If destroyed: $2,600 (52 in) 		$111,332
CTLA: $11,102 (10.03x)
Case Dossiers
Case 1 · Heritage Tree Austin, TX

Case 1: Austin Heritage Live Oak (30 in DBH)

Specimen: ATX-QV-101 (Quercus virginiana, Live Oak) at Plus Code 86247784+VP.
Statutory Authority: City of Austin Land Development Code (LDC) Title 25, Chapter 25-8, Subchapter B (Tree and Natural Area Protection); Environmental Criteria Manual (ECM) Section 3 (Full_Rule_Record).

  • Evaluated DBH & Shell Stability: 30 in (76.2 cm) | Mattheck t/R = 0.38 (Stable)
  • Protection Zones: CRZ 30 ft (9.14 m) | AS 4970 SRZ 10.77 ft (3.28 m)
  • Permit & Mitigation Liability: Permit required: ATX-QV-101 Live Oak (pruning). | Cash-in-lieu if removed: $18,000
  • Holobiont Equity vs. CTLA: $218,609 vs. $13,699 (15.96x) | John White Age: 291 yrs
  • Canonical SHA-256: 035bccca002d2569205cfad3...
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Case 2 · Heritage Tree Georgetown, TX

Case 2: Georgetown Multi-Stem Heritage Pecan (27 in DBH)

Specimen: GTN-CI-204 (Carya illinoinensis, Pecan) at Plus Code 8624J8MC+8Q.
Statutory Authority: Georgetown Unified Development Code (UDC) Chapter 8 (Tree Preservation, Landscaping, and Fencing) (Full_Rule_Record).

  • Evaluated DBH & Shell Stability: 27 in (68.58 cm) | Mattheck t/R = 0.46 (Stable)
  • Protection Zones: CRZ 27 ft (8.23 m) | AS 4970 SRZ 10.19 ft (3.11 m)
  • Permit & Mitigation Liability: Permit required: GTN-CI-204 Pecan (pruning). | Cash-in-lieu if removed: $8,100
  • Holobiont Equity vs. CTLA: $124,448 vs. $13,432 (9.27x) | John White Age: 315 yrs
  • Canonical SHA-256: 5e52af5dfc4ff7755ae424d0...
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Case 3 · Protected Tree Liberty Hill, TX

Case 3: Liberty Hill Protected Post Oak (20 in DBH)

Specimen: LBH-QS-309 (Quercus stellata, Post Oak) at Plus Code 8624M38F+4X.
Statutory Authority: Liberty Hill Unified Development Code (UDC) § 6.07.01 (Tree Preservation and Mitigation), Ord. 09-O-02 / 22-O-04.06-01 (Full_Rule_Record).

  • Evaluated DBH & Shell Stability: 20 in (50.8 cm) | Mattheck t/R = 0.32 (Stable)
  • Protection Zones: CRZ 20 ft (6.1 m) | AS 4970 SRZ 9 ft (2.74 m)
  • Permit & Mitigation Liability: No permit-triggering work on protected trees. | Cash-in-lieu if removed: $4,500
  • Holobiont Equity vs. CTLA: $69,172 vs. $5,127 (13.49x) | John White Age: 279 yrs
  • Canonical SHA-256: 2bd6bb1783a760e3b44b99e3...
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Case 4 · Heritage Tree Ashland, OR

Case 4: Ashland Heritage Oregon White Oak (41.3 in DBH)

Specimen: ASH-QG-105 (Quercus garryana, Oregon White Oak) at Plus Code 84JV57VR+R6.
Statutory Authority: Ashland Municipal Code (AMC) Chapter 18.4.5 (Tree Preservation and Protection), Chapter 18.5.7 (Tree Removal Permits), and AMC 18.3.10.090.D (Hillside Development) (Full_Rule_Record).

  • Evaluated DBH & Shell Stability: 41.34 in (105 cm) | Mattheck t/R = 0.34 (Stable)
  • Protection Zones: CRZ 41.34 ft (12.6 m) | AS 4970 SRZ 12.35 ft (3.77 m)
  • Permit & Mitigation Liability: Permit required: ASH-QG-105 Oregon White Oak (pruning). | Cash-in-lieu if removed: $6,201
  • Holobiont Equity vs. CTLA: $427,039 vs. $23,273 (18.35x) | John White Age: 446 yrs
  • Canonical SHA-256: c87412851e02c8a64e697684...
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Case 5 · Heritage Tree Medford, OR

Case 5: Medford Heritage Ponderosa Pine (26 in DBH)

Specimen: MFD-PP-208 (Pinus ponderosa, Ponderosa Pine) at Plus Code 84JV84GG+JQ.
Statutory Authority: Medford Municipal Code (MMC) Sections 6.700 to 6.750 (Public and Street Trees); Medford Land Development Code (MLDC) § 10.780 (Landscaping); City of Medford Tree Protection Guidelines (April 2026) (Full_Rule_Record).

  • Evaluated DBH & Shell Stability: 26 in (66.04 cm) | Mattheck t/R = 0.41 (Stable)
  • Protection Zones: CRZ 26 ft (7.92 m) | AS 4970 SRZ 10.19 ft (3.11 m)
  • Permit & Mitigation Liability: Permit required: MFD-PP-208 Ponderosa Pine (pruning). | Cash-in-lieu if removed: $2,600
  • Holobiont Equity vs. CTLA: $111,332 vs. $11,102 (10.03x) | John White Age: 225 yrs
  • Canonical SHA-256: 607b4b310c63c5a3e2b65f57...
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