-Soil erosion:  land disturbance, exposed soils

-Streambank eroision:  high flows

-Vehicles:  body rust, tire wear, other wear

-General outdoor application

-Structures:wood preservatives, paint

-Litter:  residential, commercial, industrial, recreational

-Waste disposal:  residential, commercial, industrial

-Vegetation:  leaves, branches, trunks

-Sewage:  leaking sanitary systems, septic systems

-Other:  animal droppings

-Soil erosion:  exposed soils

-Vehicles:  drippings, leaks

-Paved surfaces:  asphalt

-Equipment maintenance:  exposed surfaces

-Other:  wood preservatives, wood/coal combustion

Benzene

-Vehicles:  fuel
-Other:  solvent use

PCBs-Vehicles:  catalyst in synthetic tires
-Other:  electrical, insulation
Phthalate, bis(2-eth.)

-Structures:  plasticizer
-Other:  plasticizer

Toluene-Vehicles:  fuel and asphalt

– Other:  solvent use