(a) Oil Contamination
a petroleum discharged from transportation product that is reaches surface waters vehicles and vessels and either directly or through runoff,
where it spreads out on the water surface,
thus impairing its quality and suitability for supporting aquatic life.
Oil discharge affects the dissolved oxygen content, aesthetics, taste, and odor of water bodies
(b) suspended solids
Insoluble solid contaminants from transportation sources typically remain suspended in water, causing turbidity. Excessive turbidity reduces solar radiation intensity and penetration into surface water bodies and can therefore degrade aquatic life Transportation activities such as dredging, construction of hydraulic structures, and gravel washing, cause the direct release of suspended solids into water bodies and cause such effects indirectly through surface paving and landscaping. These activities result in changed surface