[#1, #10] Vault construction (3 m concrete room, foundations, ventilation and integration with site security) and installation of lightning protection electrodes (installation component).

[#2, #3, #5, #6, #7, #8, #9, #12, #13, #17] Custom triple-door system, Faraday cage and mounts, static-free workbench, humidity control install, gas lighting fixtures/distribution, fire suppression install, DC-only power architecture install, monitoring/access control installation, initial PPE kit, and specialized recording instrumentation.

[#29] Long-term decommissioning, teardown, hazardous disposal and contaminated-material handling (contingency one-time).

[#24] One-time seed contingency for cover-story/legal/PR fund to seed long-term reserves or initial settlements/cover operations.

[#4, #11, #22] Mold/tooling and first production run for the molded rubber enclosure, initial site grounding/bonding audit, and initial archive/preservation setup (climate-controlled archival space and imaging equipment).

[#10] Land buffer/easement or remote grounding array costs required to meet >200 m grounding isolation (variable cost component).

[#16, #17, #28, #22] Linguistics & translation program budget, calibration/maintenance for specialized recording instrumentation, containment R&D (countermeasure development, Level Chi work), and archive operations/ongoing preservation.

[#14, #15] Security staffing & rotations and research staffing (lead researcher and Level-3 researchers, support staff) including salaries, overtime, benefits, and hazard pay.

[#26] Specialized insurance premiums and catastrophic scenario modeling / tabletop exercises for containment liability and remediation planning.

[#24] Annual reserve for legal, PR, cover-story maintenance, incident-response contingency and ongoing reputation mitigation.

[#21] Annual containment testing protocols, emergency drills, MTF readiness, and specialized training for electrical/linguistic incidents.

[#20] Cost to recruit, vet, clear, and train a replacement for lost/unusable personnel (per-hire; recurring as per-event).

[#27] Ethics board, legal counsel, redaction/special records handling and documentation oversight costs.

[#18] Ongoing medical monitoring, counseling, accommodations, and disability benefits for required Level-3 staff previously affected by SCP-1206 (estimated per-affected-staff cost; site requires one such staff member).

[#19] Cost per administration of Class AA amnestic (agent manufacture, secure administration suite, medical supervision and follow-up). Figure shown as typical per-administration cost (recurring as per-use).

[#6, #8, #9, #10, #11, #5] Humidity system energy/maintenance/calibration, fire system inspection/maintenance, DC power maintenance and battery replacement, lightning/grounding inspections, recurring grounding/bonding audits, and static-workbench maintenance.

[#23] Per-transfer event cost for specialized packaging, secure vehicles, escorts and hardened convoy operations (recurring as per-event).

[#4, #5, #13, #25] Replacement molded-rubber pieces, ESD/bench consumables, PPE replacements/cleaning, and general consumables for high-humidity/gas-lamp environment.