====================================================================== FIRE EVACUATION CAPACITY ANALYSIS - PROJECT DETERMINATION JOSH v3.4 (dT Standard - Constant Mobilization, NFPA 101) ====================================================================== Date: 2026-04-03T04:11:38.230006 Project: Claremont Hills Terrace Address: Ridge Road & Claremont Ave, Berkeley Hills APN: Not provided Location: 37.876, -122.26 Dwelling Units: 25 Stories: 3 ALGORITHM ---------------------------------------- Universal 5-Step Evacuation Capacity Algorithm v3.2 (dT Standard - constant mobilization) Each scenario applies: (1) applicability check, (2) scale gate, (3) route identification (EvacuationPath objects with bottleneck tracking), (4) demand calculation (mobilization rate 0.90 x vpu x units - NFPA 101 design basis), (5) dT test (project_vehicles / bottleneck_effective_capacity x 60 + egress). FHSZ affects road capacity degradation only - not mobilization. Most restrictive tier across all applicable scenarios is the final determination. Reference: See legal.md for full legal basis and defense reference. ====================================================================== SCENARIO: WILDLAND_AB747 Legal Basis: AB 747 (California Government Code Sec.65302.15) - General Plan Safety Element mandatory update for evacuation route capacity analysis; HCM 2022 (Highway Capacity Manual, 7th Edition) - effective capacity with hazard degradation; NFPA 101 (Life Safety Code) - 0.90 mobilization design basis (100% occupant evacuation, adjusted for ~10% zero-vehicle households per Census ACS B25044); NIST TN 2135 (Maranghides et al.) - safe egress windows by hazard zone Result: MINISTERIAL WITH STANDARD CONDITIONS | Triggered: NO ====================================================================== STEP 1 - APPLICABILITY CHECK (Standard 3: FHSZ Modifier) -------------------------------------- Method: Always applicable; site FHSZ check via GIS point-in-polygon Result: APPLICABLE Note: Not in FHSZ (hazard_zone=non_fhsz) - no road degradation. Mobilization rate 0.90 (NFPA 101 design basis, constant). Standard 3 (FHSZ): Not in FHSZ [HAZ_CLASS=0] hazard_zone=non_fhsz (not in FHSZ) Note: Point not within any FHSZ polygon; nearest polygon 842 m away (>50 m threshold). Mobilization Rate: 0.90 (NFPA 101 design basis - constant; Census ACS B25044 zero-vehicle adjustment) STEP 2 - SCALE GATE (Standard 1) -------------------------------------- 25 >= 15 -> TRIGGERED (25 units vs. 15 threshold) STEP 3 - ROUTE IDENTIFICATION (Standard 2) -------------------------------------- Method: Project-origin Dijkstra (v3.4, travel-time weight) - fastest path from project site to each regional-network exit node (motorway/trunk/primary at city boundary); weight=length/speed_limit (seconds) per speed_defaults config; 81 nodes within 0.5 mi network zone; respects road barriers (I-5, rail, etc.) Radius: 0.5 miles (804.7 m) Serving route segments found: 78 Serving EvacuationPaths identified: 4 - Ridge Road: eff_cap=1125 vph, fhsz=non_fhsz, deg=1.00, vc=0.558 (informational) - Ashby Avenue: eff_cap=7600 vph, fhsz=non_fhsz, deg=1.00, vc=4.072 (informational) - Shattuck Avenue: eff_cap=7600 vph, fhsz=non_fhsz, deg=1.00, vc=0.400 (informational) - University Avenue: eff_cap=3800 vph, fhsz=non_fhsz, deg=1.00, vc=0.400 (informational) - San Pablo Avenue: eff_cap=3800 vph, fhsz=non_fhsz, deg=1.00, vc=0.369 (informational) - Le Conte Avenue: eff_cap=1125 vph, fhsz=non_fhsz, deg=1.00, vc=0.250 (informational) - Scenic Avenue: eff_cap=1125 vph, fhsz=non_fhsz, deg=1.00, vc=2.042 (informational) - Adeline Street: eff_cap=3800 vph, fhsz=non_fhsz, deg=1.00, vc=0.946 (informational) - 6320410: eff_cap=2250 vph, fhsz=non_fhsz, deg=1.00, vc=5.774 (informational) - Hearst Avenue: eff_cap=1125 vph, fhsz=non_fhsz, deg=1.00, vc=0.250 (informational) STEP 4 - DEMAND CALCULATION -------------------------------------- Formula: 25 x 2.5 x 0.90 Hazard Zone: non_fhsz Mobilization Rate: 0.90 (NFPA 101 design basis, constant) Project vehicles (peak hour): 56.2 vph Source (vehicles/unit): U.S. Census ACS B25044 Source (mobilization): NFPA 101 (Life Safety Code) design basis - 100% occupant evacuation; adjusted 0.90 for ~10% zero-vehicle households (Census ACS B25044). STEP 5 - dT TEST (Standard 4) -------------------------------------- Method: dT = (project_vehicles / bottleneck_effective_capacity) x 60 + egress Hazard Zone: non_fhsz Mobilization Rate: 0.90 (NFPA 101 design basis, constant) Project Vehicles: 56.2 vph Egress Penalty: 0.0 min (NFPA 101/IBC; applies to buildings >= 4 stories) Safe Egress Window: 120 min (non_fhsz, NIST TN 2135) Max Project Share: 5% dT Threshold: 6.00 min (120 min window x 5%, NIST TN 2135) Paths Evaluated: 4 Max dT: 3.00 min Triggered: NO Per-Path Results (all evaluated paths - no deduplication): Path proj_53148316_243670952 | origin BG: project_origin | 35 segments Bottleneck: Ridge Road [within threshold] Road: Two-lane highway | Speed: 25 mph | Lanes: 1 | HAZ_CLASS: 0 (non_fhsz) HCM cap: 1125 vph x degradation 1.00 (non_fhsz) = eff cap 1125 vph dT = (56.2 vph / 1125 vph) x 60 + 0.0 min egress = 3.00 min (threshold: 6.00 min (120 min x 5%)) Path proj_53148316_2644106915 | origin BG: project_origin | 50 segments Bottleneck: Ridge Road [within threshold] Road: Two-lane highway | Speed: 25 mph | Lanes: 1 | HAZ_CLASS: 0 (non_fhsz) HCM cap: 1125 vph x degradation 1.00 (non_fhsz) = eff cap 1125 vph dT = (56.2 vph / 1125 vph) x 60 + 0.0 min egress = 3.00 min (threshold: 6.00 min (120 min x 5%)) Path proj_53148316_2644106917 | origin BG: project_origin | 49 segments Bottleneck: Ridge Road [within threshold] Road: Two-lane highway | Speed: 25 mph | Lanes: 1 | HAZ_CLASS: 0 (non_fhsz) HCM cap: 1125 vph x degradation 1.00 (non_fhsz) = eff cap 1125 vph dT = (56.2 vph / 1125 vph) x 60 + 0.0 min egress = 3.00 min (threshold: 6.00 min (120 min x 5%)) Path proj_53148316_1541561262 | origin BG: project_origin | 34 segments Bottleneck: Ridge Road [within threshold] Road: Two-lane highway | Speed: 25 mph | Lanes: 1 | HAZ_CLASS: 0 (non_fhsz) HCM cap: 1125 vph x degradation 1.00 (non_fhsz) = eff cap 1125 vph dT = (56.2 vph / 1125 vph) x 60 + 0.0 min egress = 3.00 min (threshold: 6.00 min (120 min x 5%)) -> Scenario Tier: MINISTERIAL WITH STANDARD CONDITIONS Reason: Project meets the 15-unit applicability threshold and has 4 serving path(s). Max dT 3.0 min within threshold (6.00 min). Not in FHSZ (hazard_zone=non_fhsz) - no road degradation. Mobilization: 0.90 (NFPA 101 design basis, constant). Ministerial approval with standard conditions applied automatically. Legal basis: AB 747 (California Government Code Sec.65302.15) - General Plan Safety Element mandatory update for evacuation route capacity analysis; HCM 2022 (Highway Capacity Manual, 7th Edition) - effective capacity with hazard degradation; NFPA 101 (Life Safety Code) - 0.90 mobilization design basis (100% occupant evacuation, adjusted for ~10% zero-vehicle households per Census ACS B25044); NIST TN 2135 (Maranghides et al.) - safe egress windows by hazard zone. ====================================================================== SCENARIO: SB79_TRANSIT Legal Basis: SB 79 (2025) - objective health and safety standard carve-out for by-right projects (transit proximity context); California Public Utilities Code Sec.21155 (Tier 1/2 transit) Result: NOT_APPLICABLE | Triggered: NO ====================================================================== NOT APPLICABLE: SB 79: project is not within 0.5 miles of Tier 1/2 transit. Informational only - no tier impact. SB 79 Transit Proximity: outside transit buffer ====================================================================== FINAL DETERMINATION ====================================================================== RESULT: MINISTERIAL WITH STANDARD CONDITIONS Project meets the 15-unit applicability threshold and has 4 serving path(s). Max dT 3.0 min within threshold (6.00 min). Not in FHSZ (hazard_zone=non_fhsz) - no road degradation. Mobilization: 0.90 (NFPA 101 design basis, constant). Ministerial approval with standard conditions applied automatically. Legal basis: AB 747 (California Government Code Sec.65302.15) - General Plan Safety Element mandatory update for evacuation route capacity analysis; HCM 2022 (Highway Capacity Manual, 7th Edition) - effective capacity with hazard degradation; NFPA 101 (Life Safety Code) - 0.90 mobilization design basis (100% occupant evacuation, adjusted for ~10% zero-vehicle households per Census ACS B25044); NIST TN 2135 (Maranghides et al.) - safe egress windows by hazard zone. PARAMETERS APPLIED -------------------------------------- Hazard Zone: non_fhsz Mobilization Rate: 0.90 (NFPA 101 design basis - constant; ~10% zero-vehicle HHs per Census ACS B25044) Vehicles per Unit: 2.5 (U.S. Census ACS B25044) Egress Penalty: 0.0 min (NFPA 101/IBC - 3 stories) Safe Egress Window: 120 min (non_fhsz, per NIST TN 2135) Max Project Share: 5% dT Threshold: 6.00 min (120 x 5%) Max dT (project): 3.00 min Determination Tier: MINISTERIAL WITH STANDARD CONDITIONS The project meets the dwelling unit size threshold and all serving paths' dT are within the applicable threshold for the project's hazard zone. Approved ministerially. The following pre-adopted, objective conditions apply automatically: PRC Sec.4291 defensible space (if FHSZ); AB 1600 evacuation infrastructure impact fee (if fee schedule adopted); emergency vehicle access per local fire code; WUI building standards compliance (if FHSZ). Scenario Tier Summary: wildland_ab747: MINISTERIAL WITH STANDARD CONDITIONS sb79_transit: NOT_APPLICABLE Aggregation Logic: Most restrictive tier across all applicable scenarios wins. Tier Ranking: DISCRETIONARY(3) > MINISTERIAL WITH STANDARD CONDITIONS(2) > MINISTERIAL(1) > NOT_APPLICABLE(0) This determination is based solely on objective, verifiable criteria. No professional discretion was applied. All calculations are reproducible. See legal.md for full legal basis and defense reference. ======================================================================