[#10, #11, #14, #17, #18, #22, #26] Baseline audiometric tests (initial), psychological pre-screening (initial), audio research lab buildout (DAq, headphones, booths) and EEG purchases, initial background checks, cover-story/legal package development (initial), SOP development, and an initial experimental mapping campaign.

[#4, #5, #6, #9, #20, #21, #25] Acoustic monitoring & sensors, CCTV/tamper sensors & UPS, access control hardware, initial stock of electronic hearing-protection units, sound-isolated transport container, robotic/remote manipulation tools, and communications hardening hardware (one-time purchases).

[#1, #2, #3] Primary acoustic containment box, HVAC/ventilation muffler and climate control (one-time portion), and a redundant secondary containment box; construction/fabrication and ducting/silencer work.

[#19] Administrative/site-selection mitigation cost assuming an appropriate site is chosen; full relocation of psychiatric facilities would be far larger but is treated as a low-probability, high-cost contingency.

[#30] Long-run reserve allocation for low-probability/high-impact events (mass psychological incident, large-scale hospitalizations, external consultants, quarantine and legal/regulatory costs).

[#7] Two full-time equivalent assigned custodial/monitoring staff (salary+benefits), per analyst estimate.

[#4, #10, #14, #15, #16, #22, #23] Ongoing acoustic monitoring storage/maintenance, annual audiometric testing, outsourced imaging/advanced studies budget and participant compensation program, secure data storage, SOP training refreshers, and regular compliance audits.

[#24] Annual reserve allocation for medical/legal/rehabilitation costs and potential litigation/cover-up expenses.

[#12] Ongoing counseling, crisis intervention and post-exposure mental-health support budget.

[#29] Budgeted planning allowance for productivity adjustments, replacements for excluded staff, overtime and administrative reassignment costs.

[#13] Suicide-prevention contingency funds, hotline, and increased clinician/medical readiness.

[#8] Annual training/drills and incremental on-call pay for the rapid retrieval/response team.

[#17, #18, #27] Background-check renewals/legal review, cover-story maintenance, and annual redaction/legal handling of recorded tracks.

[#23] Independent psychological/safety reviews and periodic containment compliance audits.

[#9, #28] Replacement hearing-protection units/consumables, foam linings, filters, batteries and small repairs/consumables.

[#20] Per-transfer transport costs averaged over a year (assumes infrequent transfers plus container maintenance).

[#25] Maintenance for hardened internal notification/secure communications systems.

[#2, #5, #6] HVAC/ventilation electricity and minor maintenance, surveillance power draw, and card-system maintenance.

[#11] Annual/periodic psychological re-screening and enforcement of exclusion criteria.