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Here are some more information about AMD if you want to learn more than what i posted in my blogs. Hope u enjoyed them :)
http://water.epa.gov/polwaste/nps/acid_mne.cfm
http://earthconservancy.org/html/acid_mine_drainage.html

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Permits and regulations for mining have helped improve the quality of the water. Organizations such as the EPA have been able to regulate the PH levels and neutralize it so that the water is not acidic.Certain chemicals are used to neutralize the water. Constructed wetlands also another idea developed to help stop the Acid Mine Drainage. A constructed wetland is an artifical wetland that helps creat a safe habitat to migrated animals.

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Acid Mine Drainage first started to occur in the mid 1800 when mining was at its most common. Now over 5,000 miles of water are effected by it in Pennsylsvania. Although it is most common in Pa other states are also impacted by AMD. Aquatic life such as alage are unable to live to survive in such conditions. The polluted has also caused dead fish to surface. Aquatic insects have trouble surviving due to lack of oxygen by the minerals clogging their gills.

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AMD can still have an effect even after mining has stopped which is why it has been a problem for many years.The chemical reaction is caused by the mixture of surface water when it comes in contact with sulfuric minerals. When the PH drops low to a acidic level that’s when the yellow-orangish color in the water develops. The way that the mines were set up was to drain any extra water into the riviers and streams. AMD can cause residents drinking water to be contaminated and it can also be harmful to animals.

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Have you ever wondered what causes some rivers and streams to have that nasty orange color? That is what happens when sulfuric acid forms in the water. When that occurs because of near by coal mining activity it is called Abandoned Mine Drainage. AMD is water that is polluted from contact with mining activity, and normally associated with coal mining (United States Environmental Protection Agency).