,,ii  #aaf? ,,congress  #a/ ,session    
,s4 #baje  ,,9 ,,! ,,s5ate ,,( ,,!      
,,unit$ ,,/ates  ,july #aa1 #bjai,mr4   
,paul introduc$ ! foll[+ bill2 :i* 0    
read twice & ref]r$ to ! ,committee on  
,environm5t & ,public ,works  ,a ,,bill 
,to am5d ! ,clean ,air ,act to cl>ify :5
 a physical *ange 91 or *ange 9 ! me?od 
( op]ation (1 a /ation>y s\rce          
con/itutes a modification1 & = o!r      
purposes4  #a4 ,cl>ification ( def9ition
 ( modification ,section #aaa7;a77#d7 ( 
! ,clean ,air ,act 7#db ,u4,s4,c4       
#gdaa7;a77#d77 is am5d$-- 7#a7 by /rik+ 
7#d7 ,! t]m modification means & ins]t+ 
! foll[+3  7#d7 ,modification  7,a7 ,9  
g5]al ,! t]m modification means  2 &    
7#b7 by add+ at ! end ! foll[+3  7,b7   
,associat$ def9ition ,= purposes (      
subp>agraph 7,a71 a physical *ange 91 or
 *ange 9 ! me?od ( op]ation (1 a        
/ation>y s\rce %all be consid]$ to      
increase ! am\nt ( any air pollutant    
emitt$ by ! /ation>y s\rce only if !    
maximum a*ievable h\rly emissions rate (

 ! /ation>y s\rce aft] ! *ange w be     
high] ?an--  7i7 ! maximum a*ievable    
h\rly emissions rate ( ! /ation>y s\rce 
z ! /ation>y s\rce 0 orig9ally design$2 
&  7ii7 ! maximum h\rly emissions rate (
 ! /ation>y s\rce t 0 actually a*iev$   
dur+ ! #aj-ye> p]iod prec$+ ! *ange4  4