[#1, #17, #29] Construction of an 8m×8m reinforced containment cell, bathroom and anti-tamper plumbing, plus potential containment escalation capital (surgical-capable biocontainment suite) and sanitation/plumbing modifications. Mid-range estimate used from provided ranges.

[#3, #28] One-time R&D/validation for bespoke physiological sensors and an initial advanced physiological research program startup (multi-year capital) to understand SCP-542's anomalous biology.

[#2, #3, #7, #11, #13, #14, #24] CCTV/monitoring installation, basic bedside monitors, initial furnishings, biobanking refrigerators/freezers, initial sedation/net deployment gear, nonlethal fire-control equipment, and generator/UPS hardware. R&D sensor development excluded (placed under initial_research_and_lab_setup).

[#4, #5, #19, #20, #22] Annual wages/on-call premiums for medical readiness (anesthetist/surgeons/nurses), regular security staffing (12–16 FTEs), psychologist/conversational staffing, dedicated research staff salaries/overhead, and contingency/escalation team readiness.

[#30] Annual-maintained contingency reserve fund to handle unexpected frequency of transplants or large incidents as recommended.

[#6] Procurement, housing, health monitoring, replacement cycles and liability overhead for Class D personnel (assumes multi-person cycling per notes).

[#21, #23, #27] Legal, cover-story maintenance, procurement logistics, insurance/regulatory mitigation and public perception/disinformation budgets.

[#9] Baseline assumed annual allocation for organ procurement (per-event acquisition costs). This represents a single-transplant-per-year baseline (mid-range per-event cost).

[#12] Baseline annual allocation for OR time, consumables, anesthesia and perioperative ICU costs (assumed one major procedure/year at mid-range cost).

[#3, #7, #8, #13, #15, #16, #25] Ongoing consumables: monitor calibration/maintenance, annual furnishings refresh/laundry, weekly blood transfusions, sedation drug replenishment, biohazard disposal, laundry, and miscellaneous medical/disposables.

[#9] Cold-chain transport, organ couriering and related logistics for moving organs/blood and samples.

[#10, #3] Pathology, sequencing and tissue analysis recurring costs (histology, culture, sequencing) and ongoing monitoring/validation studies (separate from salaries).

[#26] Repairs and refurbishment after attempted escapes or violent episodes; reserve for fixture replacement and containment repairs.

[#18] Routine daily/weekly inspections, anti-tampering audits and related administrative labor costs.

[#11, #24] Ongoing maintenance, power costs and redundancy upkeep for biobanking equipment, UPS/generator servicing and HVAC/containment systems.

[#14] Ongoing training, permits and drills for nonlethal flame-control and special PPE maintenance.