[#17] Reserve fund for extraordinary events (heavy-lift machinery, contractors, urgent conservation) maintained as an available one-time capital reserve.

[#8] Purchase/fit of a regional rapid-response vehicle for containment team (regional vehicle purchase and equipment).

[#13, #14, #16] Initial PPE and field-sampling kits, archival conservation and translation work for journal fragments, and small laboratory equipment / cold storage for retained samples.

[#2, #19] One-time construction and dressing of the archaeological-dig cover (shade tents, replica stratigraphy, fencing props, storage shed) and small operations trailer/shelter purchase. Estimate reflects mid-range build quality and discrete installation in rural Yucatán.

[#3, #4, #5, #6] Physical perimeter hardware (fence, gates, locks), electronic surveillance and sensors (CCTV/thermal/motion/seismic) including installation, power infrastructure hardware (solar + batteries + small generator), and a modest communications booster terminal. Mid-range equipment purchases chosen to balance redundancy and covertness.

[#20] Pickup/4x4 purchase for site logistics, staff transport and supply runs (chosen purchase over lease to ensure discretion and long-term ops).

[#1] One-time payment to landowner(s) and easement/registration costs to secure exclusive control of the crater area and access roads; discrete settlement to maintain cover.

[#7, #9] Local security contractor (minimal daytime guard coverage) and contracted archaeologist cover personnel (lead + one assistant). Includes salaries, benefits, uniforms, and routine training.

[#8, #15, #20] Annualized ops for regional rapid-response (on-call readiness and fuel), routine monitoring visit travel/accommodation/per-diem, and vehicle running costs for site logistics.

[#11] Ongoing discreet payments, goodwill grants, and small community projects to reduce curiosity and rumor; mid-range local-sensitivity posture chosen.

[#4, #14, #16, #21] Ongoing surveillance data/cloud storage fees, archival/digital-storage fees, small lab/equipment electricity and maintenance, and periodic scientific review/low-priority research allocations.

[#10, #22] Permits, legal counsel for maintaining archaeological cover and liaison with INAH, plus cultural-sensitivity / museum/education mitigation materials and small harmless displays to deflect attention.

[#18] Local insurance and institutional administrative overhead and auditing; explicit insurance estimate plus modest administrative overhead budgeted (within 10–20% guidance).

[#12] Annual costs for processing/detaining/questioning trespassers, short transports, temporary holding, and minor legal/cover stipends; spikes if incidents occur.

[#2, #3, #19] Annual maintenance and repairs for the archaeological-dig cover, perimeter hardware upkeep, and routine servicing for on-site shelter/trailer and basic site utilities.

[#13] Consumable PPE replenishment, sampling consumables, and small field-safety supplies.

[#5] Fuel and routine maintenance for generator and servicing for the solar/battery system.

[#1] Annual renewals/administration for land access/easement and discreet local fees.

[#6] Cellular data or low-tier satellite service for telemetry/alerts (baseline chosen as cellular data option).