Working...
http://library.thinkquest.org/17456/pollutionall.html
http://www.geocities.com/CapeCanaveral/Hall/9111/DOC.HTML#INTROEFFECT
http://www.epa.gov/acidrain/index.html
http://library.advanced.org/3659/acidbase/ph.html
http://www.hbrook.sr.unh.edu/hbfound/report.pdf
http://www.atmosphere.mpg.de/enid/3vp.html
http://www.madison.k12.wi.us/stugeon/achistory.htm
http://www.qesnrecit.qc.ca/ccdb/acidrain/st-web.htm
NEW YORK STATE ONLY
http://www.dec.ny.gov/chemical/283.html
MASSACHUSETTES STATE ONLY
http://www.umass.edu/tei/wrrc/arm/
PENNSYLVANIA ONLY
http://pubs.cas.psu.edu/FreePubs/pdfs/UH127.pdf
http://www.dep.state.pa.us/dep/deputate/AIRWASTE/AQ/acidrain/acidrain.htm
MAINE STATE ONLY
http://www.maine.gov/dep/air/acidrain/