[#2, #4, #5, #6, #7, #8, #9, #10, #15, #16, #17, #21, #24] Airlock and dedicated HVAC/filtration, gas mixer/hardware, environmental control electronics, lighting arrays and UPS, automated irrigation hardware, remote handling/robotics, PPE/decon hardware, access control hardware, emergency eradication hardware (burn/oxygen systems), backup generator, seed-capture equipment, secure transport containers/mods, and initial IT/logging hardware.

[#1, #14] Structural construction and room rehabilitation: sealed 5m×5m terrarium area with reinforced pit/liner, puncture‑resistant interior, viewports and structural isolation; on-site incinerator / scrubber capital cost.

[#12] Specialized analytical equipment acquisition for biochemical/genetic study (mass spec, SEM, DNA sequencer, gas analyzers) and initial research lab instrumentation specific to SCP-355 investigations.

[#10, #11] Dedicated security staffing and research/operations payroll (lead researcher, research technicians, containment engineer, administrative support; incremental 24/7 guard payroll).

[#4, #12, #20, #23, #26, #27] Gas refills/consumables for Standard Atmospheric Mixture #14, service contracts for analytical equipment, ethical/veterinary oversight and animal-testing costs, training and drills funding, perimeter environmental sampling, and ongoing long-term research project budgets.

[#19] On-call trauma/medical coverage, readiness for severe lacerations/toxic exposure and baseline readiness staffing and supplies (contingent per-incident treatment costs excluded here).

[#25] Annual allocation to a reserve fund for potential containment breach cleanup, contractor labor, downtime and specialist contractor engagement.

[#3, #5, #6, #8, #15, #16] HVAC/filter maintenance and replacements, environmental sensor calibration, lighting/power utility overhead, robotics maintenance/spares, emergency system permits/ops, and generator fuel/maintenance.

[#7, #9, #13, #17] Irrigation/nutrient consumables, PPE replacement and decon consumables, laboratory reagents and sequencing kits, sticky pads/HEPA vac consumables and housekeeping supplies.

[#14] Contract hazardous biomass/PPE disposal and incineration service fees (recurring disposal costs when on-site incineration not used).

[#22] Annual retainer for legal, PR/cover-story readiness, community relations and low-level contingency planning (does not include large per-incident contingency payments).

[#21] Per-transport costs for sealed container shipments, vehicle escorts, permits and occasional specimen transfers (annualized average).

[#18] Annualized periodic soil excavation/replacement and contaminated soil disposal (periodic cost averaged over multi-year replacement windows).

[#24] Secure logging, encrypted backups, CCTV retention costs and annual IT maintenance/compliance audits.