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Environmental Health - Toxic Substances

Research Projects -- Oxygenated Fuel -- Laurel Bay, South Carolina, Site

Laurel Bay Research Site Photos

Source area is located behind gasoline station, far right, and oak trees (Quercus virginiana).

Source area
Discharge area

Local ground-water discharge area is this concrete-lined drainage ditch, located about 800 ft from the source area.
Direct-push investigation of discharge of MTBE-contaminated ground water into a surface-water body.

MTBE contamination
Monitoring points Two rows of variably screened ("nested") monitoring points, screened from shallowest to deepest, left to right. Blue marks on well casing indicate level of ground water in well, with higher water-levels in deeper wells, indicating a location of ground-water discharge.
Tree core Tree core
Tree coring Tree coring

Increment borer used to obtain core material from trees growing above gasoline-contaminated ground water.
graphic of core material inside a gas-tight vial Tree core material inside a gas-tight vial. Needle and syringe can be used to remove headspace sample for analysis. Methanol can also be added before the core is collected, and the methanol extractant is analyzed.
diving plume A diving plume is caused by localized recharge deflection of ground-water flowlines and hence dissolved-phase transport. Oak tree cored Size of oak tree cored.

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Page Last Modified: Tuesday, 06-May-2014 14:37:03 EDT