Bioremediation of highway oil spills
Highway accident in Va showing spillage of diesel and motor oil
A tractor/trailer was involved in a highway accident in Virginia releasing approximately 100 gallons of diesel fuel from a ruptured saddle tank and ten gallons of motor oil from the truck engine. The fuel and motor oil destroyed the vegetation along the embankment as seen in the photograph.
Diesel oil seen in the canal at the foot of the embankment
The released diesel and the oil was seen below the embankment and going towards the culvert and to the adjoining vegetation nearby.
Contamination in the culvert
The entrance of the culvert showing accumulation of diesel.
Mopping up of the fuel
The free oil seen earlier was mopped using absorbent socks placed both outside and inside the culvert to prevent spread of the diesel.
Destroyed vegetation below the embankment
The photograph shows an area indicating denuding of vegetation due to the harmful effects of diesel. Since the affected region was below the slope of the embankment, Virginia Department of Transport found it difficult to excavate and transport the contaminated soil. It was therefore decided to use AgroRemed to bioremediate the contaminated soil and also to restore the soil and allow growth.
Spray application of AgroRemed on areas devoid of vegetation
AgroRemed is available in a ready-to use liquid form and hence it is easy to use on the field. It is transferred to any mechanized sprayer for uniform application. The photograph shows one such application in progress.
Reduction of Total Petroleum Hydrocarbons and restoration of vegetation
TPH of the soil at the start was 65,000 ppm and was reduced to 26,000 in 20 days time and before end of three months the TPH values in the soil was reduced to 650 ppm with no tainting of the grass. Further, the area was found to support healthy growth of grass and other vegetation indicating no residual toxicity in the soil and AgroRemed helped restoration of the soil to its condition before the spill. The project was approved for closure by the DEQ.