These techniques are directed primarily at marshy locales which may require a unique approach to recovery.
Vacuum/pumping removes pooled oil on marsh sediment or the surface of water. Low-pressure flush pushes oil towards collection points where other equipment is operating, like skimmers or vacuums. Vegetation cutting is when plants are cut and removed so that other techniques can be effectively employed, however, erosion and damage to fragile sediment and existing roots may limit or even delay recovery.
Bioremediation is a potential low-impact cleaning technique, using microorganisms and enzymes to facilitate decomposition. Nitrate or sulfate fertilizers are used to facilitate decomposition.