Smith Haven Mall "Hydrocarbon Runoff"
Impervious asphalt surfaces define the local hydrology. Stormwater volume is high. The chemical load includes heavy hydrocarbons (lipids) and chloride salts. The Route 25 water table absorbs this plume.
Oily particulates create a hydrophobic "smog skin" on granite. This layer traps biological spores. Scrubbing spreads the grease. It fails to lift it. We use specialized grave site cleaning services. We apply surfactant-based degreasers. The mechanism is emulsification. We break the carbon bonds and rinse without abrasion.
Pine Barrens Acidic Soil Interface
Ecology is the Pine Barrens interface. Conifer needle decomposition drives soil pH below 5.0. The groundwater profile is corrosive.
Acidic soil attacks calcium carbonate binders in marble. The base dissolves. The texture becomes granular ("Sugaring"). We use consolidation treatments. These saturate the pore network. They replace the lost binder. They re-harden the matrix against acid attack.
Ronkonkoma Moraine Kettle Geology
Geomorphology is the Ronkonkoma Moraine. "Kettle Hole" depressions define the topography. Sub-surface drainage is erratic.
Meltwater accumulation occurs in these lows. Soil saturation triggers frost heave. Vertical displacement is uneven. Foundations tilt. Adding topsoil is cosmetic. For permanent tombstone repair and restoration, we stabilize the sub-grade. We excavate. We install a friction pile of angular gravel. This bypasses the frost-susceptible layer.
Middle Country Road Emissions
Route 25 traffic density is extreme. Combustion exhaust releases particulate matter continuously.
Carbon soot settles on the stone. It reacts with atmospheric sulfur. On marble, this reaction yields a black gypsum crust. This scab prevents evaporation. Decay accelerates. Mechanical removal destroys the stone surface. We use ammonium carbonate poultices. These pastes dissolve the chemical bond. We lift the carbon staining without abrasion.
Tannic Acid Staining
Native oak and pine canopy releases tannic acid. Seasonal leaf litter accumulates on monuments.
Moisture transfers the tannins to the stone. The result is deep brown/red staining. It mimics iron rust but is organic. Bleach damages the stone structure. We use solvent-based poultices. These extract the organic pigment from the pores. The stone returns to its natural color without etching.
