[#23] Contingency/emergency incident fund reserved at startup (chosen mid-range of recommended $50k–$500k).

[#1, #2, #4, #10] Containment cell construction, heat-resistant interior lining (stainless/ceramic baseline chosen), ventilation/exhaust installation, and secure small storage for introduced wood pieces; includes labor/site prep. Chosen mid-range estimates favor retrofit over new large-scale greenhouse.

[#3, #5, #6, #7, #8, #11, #12] Heat/impact-resistant viewport and camera systems, localized fire-suppression and facility protection systems, redundant UPS/generator hookup, environmental sensors (installation), remote automatic food dispenser + refrigerated locker, initial purchase of fire-retardant suits, and initial PPE/tool kits.

[#14, #27] Initial chemical/GC-MS/HPLC analysis outsourcing and characterization, and initial sample archiving/LIMS/setup costs; chosen mid-range for initial characterization and sample bank setup.

[#19] Discovery/capture costs including travel, sedation, logistics and a custom fireproof transport crate (mid-range).

[#21] Initial legal/cover-story/administrative contingency for capture/initial interactions with local authorities.

[#16] One-off deep-clean/remediation contingency for incidents (range $5k–$50k); mid-range chosen as baseline allowance.

[#20] Permanent relocation/quarantine integration allowance (biosecurity checks/quarantine room integration).

[#13] One-off veterinary diagnostics (imaging, bloodwork) on intake / as-needed initial health workup.

[#15, #18, #11] Salaries for on-site staff: reduced security posture (3 guards + 1 supervisor), one research scientist/lead allocated part-time to SCP-4191; Class-D labor and D-retrieval supervision budgeted separately.

[#24] Pro-rated site administrative overhead allocation: utilities, records, clearance processing, and command infrastructure.

[#14, #15, #13] Ongoing biochemical/toxicity follow-up studies, outsourced analytical runs, contracted specialist consultations; includes periodic veterinary care budgeted as part of monitoring/consultation.

[#21] Annual legal/cover administration, small compensations, and PR/legal retainer budgets for plausible deniability and local authority interactions.

[#11] Supervision, training, operational overhead and lost-productivity costs for supervised Class‑D retrieval operations (annualized).

[#4, #6, #17] Routine HVAC/ventilation maintenance, UPS/generator testing/fuel cycling, periodic cell refurbishment/repair due to heat/fire wear and sensor upkeep.

[#9, #12, #10, #28] Annual consumables: daily meat supply, PPE consumables and replacement small tools, introduced wood materials, and miscellaneous fasteners/seals/electronics replacements.

[#22] Regular emergency drills, SOP refreshers, and instructor fees for staff and D-class training.

[#25] Replacement single‑use enrichment items and safe toy procurement consumed by SCP-4191.

[#16] Monthly hazardous waste and ash/residue disposal via licensed contractor.

[#27] Ongoing sample storage costs, freezer maintenance, and LIMS/database upkeep.

[#11] Cleaning, certification, and periodic replacement reserves for fire‑retardant suits used during D-class retrievals.

[#7] Annual sensor replacement and calibration (temperature, smoke, VOC/gas, CO, O2).

[#19] Minor recurring transport/sample courier costs; initial capture transport is one-time.