tk United States
Ivfl Environmental Protection
* w I	Agency
EPA is Proposing to Require Monitors Near Stationary Sources of
Lead Emissions
12 facilities emit 5 or more tons of lead per year
I 13 additional facilities emit I or more tons of lead
per year (for a total of 125)
O 69 additional facilities emit 0.66 or more tons (600
kilograms) of lead per year (for a total of 194)
510 additional facilities emit 0.22 or more tons (200
kilograms) of lead per year (for a total of 704)
~ Ambient lead (Pb-TSP) monitoring site (196)
NOTES
1.	Emissions estimates based on EPA's 2002 National Emissions Inventory (NEI) with modifications documented in Tom Pace's 05/01/08 memorandum and Marion Hoyer's 04/21/08 and 05/01/08
memoranda to the docket.
2.	EPA is working to update the NEI to reflect more recent data in 2008.
3.	The NEI includes more than 12,000 additional stationary sources that emit less than 0.22 tons per year of lead.
4.	Ambient lead monitoring sites measure lead in total suspended particulate matter (Pb-TSP).
5.	The 196 monitoring sites shown met 2004-2006 completeness criteria or were active as of 4/29/08.
6.	The current monitoring network for lead is not sufficient to determine whether many areas of the country would meet the proposed revised standards.

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