[#1, #2, #3, #7, #20] Purchase and installation of primary deep-freeze unit including HVAC tie-in (~$50,000), purchase of redundant backup freezer (~$20,000), backup generator and ATS install (~$50,000), environmental monitoring system install (~$8,000), and purchase of dedicated refrigerated transport van (~$40,000). Recurring rental option for offsite vault covered in recurring logistics.

[#11, #15, #16, #27] Initial breeding pen setup and climate-controlled enclosures (~$10,000), basic pathology/autopsy and histology prep equipment (~$30,000), and purchase of a mid-range GC‑MS/basic analytical equipment or histology start-up (~$20,000). Imaging capital (CT/MRI) assumed outsourced and therefore is captured in recurring research costs.

[#6, #19, #25] Containment room retrofit and low-temperature-rated containment modifications (containment retrofit ~$20,000), behavioural testing enclosure setup (~$15,000), and initial SOP drafting startup costs (~$10,000).

[#8, #9, #10] Salaries and benefits for operational staff: 2Level-2 security guards (2×~$50k), 1 containment technician (~$50k), 1 animal technician (~$35k), and 1 veterinarian (~$95k) allocated to SCP-3904 operations (total ~ $280k/year).

[#3, #4, #5, #7] Generator fuel/maintenance and monthly test runs (~$18,000/year), refrigeration electricity for ultra-low/freezer bank (~$3,000/year), Site-66 allocated overhead and security/utilities share (~$30,000/year), and monitoring service/maintenance (~$4,000/year).

[#16, #17, #27, #7] Outsourced imaging/sequencing and recurring sample analysis (~$20,000/yr), partial research staff allocation / specialized contractor time (~$15,000/yr), and recurring VOC/GC‑MS sample runs and monitoring contracts (~$5,000/yr).

[#11, #12, #14, #18] Animal consumables and breeding consumables (~$5,000/yr), per-cat consumables (food, litter; ~$4,800/yr for small colony), PPE and sterilisation supplies (~$6,000/yr), and lab consumables/reagents for low-to-moderate research (~$20,000/yr).

[#30] Financial contingency / amortization reserve approximated as ~10% of operating budget for equipment replacement and unforeseen liabilities.

[#28] Internal ethics/compliance review, admin and counsel time allocated to the program (~$5,000–$50,000/yr; baseline ~$10,000).

[#29] Contingency fund for specimen replacement, field recovery ops, or re-prioritising tests (~$10k/yr baseline; can spike if recovery required).

[#2, #20] Periodic relocation testing and secure transfer per-move costs (~$2,000–$10,000 per move; budgeted ~$5,000/yr average) and misc. transport/escort expenses (~$3,000/yr). Offsite cold-vault rental option exists but is not baselineed here.

[#22] LIMS/database licensing, barcode labels, and secure evidence/chain-of-custody systems (~$2,000–$20,000/yr; baseline ~$6,000).

[#23] Routine cover/liaison, small annual allowances for document handling, disposal/memorials or witness management estimated at ~$1k–$10k/year (baseline ~$5k/yr).

[#13] Budget for emergency surgeries, quarantine supplies, and rapid-response vet callouts (~$5,000/yr contingency for small programs).

[#25] Annual training refreshers and tabletop exercises (~$1,000–$10,000/yr; baseline modest allocation ~$3,000).

[#24, #23] Low-frequency allocation for small-scale field amnestic administrations or witness management (~$500–$5,000 per person; baseline reserve ~$2,000/yr).

[#21] Contracted biohazard disposal/incineration services (~$500–$5,000/yr; baseline ~$1,500).

[#26] Baseline incident response and minor medical care for staff (occupational health monitoring, post-exposure prophylaxis) (~$1,000/yr).