20 The Particle Pollution Report: Current Understanding of Air Quality and Emissions through 2003.

http://www.epa.gov/airtrends/aqtrnd04/pmreport03/pmcover_2405.pdf#page=1.

21 Particulate Matter Staff Paper: Review completed in 2012.

http://www.epa.gov/ttn/naaqs/standards/pm/s_pm_cr_sp.html.

Public Review Draft 03/04/2013

A-2

Daily 24-hour speciation collection is limited to occasional e 1 fforts in the SEARCH (see

2 below) network. Similarly, only a handful of sites provide near continuous speciation data,

3 usually limited to some combination of sulfate, carbon (organic and elemental splits) and nitrate.

4 This enables insight to diurnal patterns for diagnosing various cause-effect phenomena related to

5 emissions characterization, source attribution analysis and model evaluation.

6

7 Figure A-1. Locations of chemical speciation sites delineated by program type

 

n501 - n502 - n503 - n504 - n505 - n506 - n507 - n508 - n509 - n510 - n511 - n512 - n513 - n514 - n515 - n516 - n517 - n518 - n519 - n520 - n521 - n522 - n523 - n524 - n525 - n526 - n527 - n528 - n529 - n530 - n531 - n532 - n533 - n534 - n535 - n536 - n537 - n538 - n539 - n540 - n541 - n542 - n543 - n544 - n545 - n546 - n547 - n548 - n549 - n550

 

 

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