National Monument Stone Conservation & Vandalism Remediation Protocol Simulator

1. Substrate & Incident Setup

NPS Monument Preset

Substrate Porosity 1.2%

Contaminant Medium

Contaminant Dwell Depth 0.45 mm

2. Cleaning Chemistry Test

Reagent Agent

Reagent Dwell Time 15 min

Substrate Surface Temp 22 °C

Interactive Surface Micro-Section Status: Ready for Chemistry Application

Drag cursor across stone surface to apply reagent, agitate dissolved binder, or flush dissolved pigment into poultice layer.

Pigment Removal

0.0%

Incomplete

Substrate Etch Risk

0.1%

Negligible Risk

Pore Retention

100.0%

Contaminated

NPS Compliance

PASS

Sec. Interior Compliant

3. Legal & Restitution Assessment

Affected Surface Area: 4.50 sq ft

Est. Specialist Labor: $1,850.00

Material & Reagent Cost: $320.00

Substrate Value Impairment: $4,500.00

ARPA Total Restitution: $6,670.00

Affected Area (sq ft)

Conservation Guidance

Select appropriate solvent based on solubility parameters. Dwell times over 20 min on porous marble increase risks of deep matrix leaching and micro-fissure etching.

NPS Historic Stone Remediation Methodology (16 U.S.C. 470ee & ARPA Protocol)

Vandalism on national monuments—such as alkyd spray paint on granite or porous marble—requires immediate scientifically controlled intervention to prevent permanent pigment absorption into internal mineral pores. Under Secretary of the Interior Standards for Rehabilitation, remediation must utilize the gentlest effective means to preserve historical fabric without etching matrix grains.

ARPA Restitution Assessment: Under the Archaeological Resources Protection Act (16 U.S.C. 470ee) and national park restoration standards, legal damage claims calculate non-destructive remediation labor, specialised chemical gel poulticing, micro-abrasive containment, and permanent structural value impairment.