21 2.1. Emissions

22

23 Consistent with Appendix W, dispersion modeling for the purposes of PSD permitting

24 should be based on the use of continuous operation at maximum allowable emissions or federally

25 enforceable permit limits (see Table 8-2 of Appendix W) for the project source for all applicable

26 averaging periods. Also consistent with past and current guidance, in the absence of maximum

27 allowable emissions or federally enforceable permit limits, potential to emit emissions (i.e.,

28 design capacity) should be used. Maximum allowable emissions and continuous operation

29 should also be assumed for nearby sources included in the modeled inventory for the 24-hr PM2.5

30 NAAQS, while maximum allowable emissions and the actual operating factor averaged over the

31 most recent 2 years should be used for modeled nearby sources for the annual PM2.5 NAAQS.

32

33 2.2. Good Engineering Practice (GEP) stack height

34

35 Consistent with previous modeling guidance and Section 6.2.2 of Appendix W, for stacks

36 with heights that are within the limits of Good Engineering Practice (GEP), actual heights should

37 be used in modeling. Under the EPA’s regulations at 40 CFR 51.100, GEP height, Hg, is

38 determined to be the greater of:

39 65 m, measured from the ground-level elevation at the base of the stack;

40 for stacks in existence on January 12, 1979, and for which the owner or operator had

41 obtained all applicable permits or approvals required under 40 CFR Parts 51 and 52

b3

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

 

 

   Flag of Portugal 

 english:

 castellano: DISPER CUSTIC DESCAR RADIA    italiano:     

 

 français:    português:  

 

deutsch:

 

 

 

deutsch: DIS CUS  DES  RAD

castellano: DIS CUS DES  RAD   english: DIS CUS DES RAD  

 

 português: DIS CUS DES RAD   italiano:   DIS CUS  DES RAD

 

français:  DIS CUS DES RAD