[#1, #2, #14] Structural construction & conversion of the 55×55×10 m reinforced containment chamber (#1), installation of the inner soundproofed cell and adjacent humanoid suite (#2), and soundproof HVAC/environmental control modifications installation (#14). Estimate combines selected mid-range values for site preparation and specialized install.

[#3, #5, #7, #8, #11, #12, #15, #21] High-resolution cameras and hardened NVR (#3), automated head-orientation software development (one-time component) (#5), level-4 access hardware (locks/biometrics) (#7), MTF initial equipment & kit (#8), initial Class-G amnestic stock (#11), PPE kit stockpile (#12), UPS/switchgear + generator hardware install (one-time equipment costs portion) (#15), and specialized non-audio sensors initial purchase/calibration (#21).

[#20] Initial research lab setup and specialized non-auditory experimental equipment for the research team (special sensors, calibration gear) as distinct from general equipment.

[#8] MTF readiness and on-call staffing, training, baseline equipment ops and transport costs to enable rapid-response sweeps and captures (annual staffing & operations portion).

[#4, #5, #20, #21] Continuous secure video storage & archival (#4), software updates & maintenance for head-orientation detection (#5), research team salaries and running costs for non-audio testing (#20), and calibration/maintenance of non-auditory sensors (#21).

[#25] Administrative overhead (finance, HR, procurement) and site-level compliance allocation, set at ~15% of direct recurring costs in this estimate.

[#6] 24/7 monitoring/watch officer staffing (3 FTEs) including benefits; chosen near mid-range of analyst estimates to cover continuous observation duties.

[#18] Incident response contingency fund reserved for unexpected large costs (property damage, medical evacuation, litigation, major equipment loss).

[#17] Baseline retainer and routine cover-story/legal/public-relations work to manage civilian incidents, witness handling, and occasional legal fees.

[#22] IT security, air-gap procedures, hardened networks, penetration testing and insider-threat monitoring to enforce the no-audio rule and prevent covert capture/leaks.

[#26] Annualized budget for replacement/upgrades and R&D on mask-related mitigation technologies and containment improvements (reserve averaged from multi-year replacement cycles).

[#16] Annual budget for forensic processing, mortuary/cremation/interment and evidence handling when SCP-1400-A instances are disposed per protocol (recommended contingency).

[#10] Ongoing medical and psychiatric care for SCP-1400-A (regular checkups, psychiatry, medication management) with special procedures to avoid audio exposure.

[#19] Recurring training and drills for cognitohazard recognition, emergency entry, MTF sweeps, and amnestic administration.

[#2, #14, #15] Ongoing maintenance of the inner soundproofed cell (#2), HVAC/filter and silencer servicing (#14), and UPS/generator maintenance & fuel provisioning (#15).

[#9, #11, #12, #23] Consumables for SCP-1400-A suite (food/medical) and custodial supplies (#9), Class-G amnestic replenishment & administration consumables (#11), PPE replacement and fit-testing supplies (#12), and routine waste/disposal/cleaning supplies & labor (#23).

[#24] Counseling, follow-up, and amnestic treatments for staff and affected civilians (SCP-1400-B exposures).

[#13] Policy enforcement, periodic audits, staff training and compliance investigations to ensure prohibition on audio recording and unauthorized microphones.

[#7] Administrative and background-check costs associated with Level-4 supervisor access provisioning and occasional emergency overrides.