[i] U.S. EPA, Lead in Drinking Water http://www.epa.gov/safewater/lead/basicinformation.html.
[ii] U.S. EPA, Lead in Drinking Water http://www.epa.gov/safewater/lead/basicinformation.html.
[iii] Ronald Eisler, U.S. Fish & Wildlife Serv., Lead hazards to fish, wildlife, and invertebrates: a synoptic review (1988) available at http://www.pwrc.usgs.gov/infobase/eisler/chr_14_lead.pdf.
[iv] Eisler, supra.
[vi] U.S. Fish & Wildlife Service, Let’s Get the Lead Out (1999) http://www.fws.gov/contaminants/documents/leadpoisoning2.pdf.
[viii] U.S. EPA, National Recommended Water Quality Criteria, http://www.epa.gov/waterscience/criteria/wqctable/index.html#U (last visited July 22, 2010).
[ix] Hyperphysics, Lead, http://hyperphysics.phy-astr.gsu.edu/hbase/pertab/Pb.html#c1 (last visited July 7, 2010)
[xi] Hyperphysics, supra.
[xii] See Science Progress, A brief history in lead regulation, http://www.scienceprogress.org/2008/10/a-brief-history-of-lead-regulation/ (last visited July 7, 2010)
[xiii] Buzzle.com, Uses of lead, http://www.buzzle.com/articles/uses-of-lead.html (last visited July 7, 2010).
[xiv] MBendi Information Services, Zinc and Lead Mining in North America – Overview http://www.mbendi.com/indy/ming/ldzc/am/p0005.htm (last visited July 7, 2010).
[xv] MBendi Information Services, supra.
[xvi] Doe Run Co., What we do: mining metal, http://www.doerun.com/WHATWEDO/METALMINING/tabid/72/language/en-US/Default.aspx (last visited July 7, 2010).
[xvii] U.S. Geological Survey, Geohydrological and biological investigations associated with lead-zinc exploration and mining in Southeastern Missouri http://mo.water.usgs.gov/mining/leadmining.htm (last visited July 7, 2010).
[xviii] U.S. EPA., Mid-Atlantic lead paint: frequently asked questions about lead, http://www.epa.gov/reg3wcmd/lp-faqhealth.htm (last visited July 7, 2010).