----- Forwarded by Melanie King/RTP/USEPA/US on 04/19/2010 10:02 AM

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|Heather Valdez/R10/USEPA/US

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|Melanie King/RTP/USEPA/US@EPA

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| Date: |

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|04/16/2010 03:49 PM

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|FW: Request for info related to control of existing rich burn engines

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This would cover info from all of Idaho ...

Heather Valdez

Environmental Engineer

EPA Region 10

Office of Air, Waste and Toxics

1200 6th Ave, Suite 900, AWT-107

Seattle WA, 98101

(206) 553-6220

valdez.heather@epa.gov

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

National Collision Repair Campaign:

http://www.epa.gov/collisionrepair/

R10 Collision Repair Campaign:

http://yosemite.epa.gov/R10/AIRPAGE.NSF/Collision+Repair

+Campaign/crc-home

Area Source Website:

http://www.epa.gov/ttn/atw/area/arearules.html

-----Forwarded by Heather Valdez/R10/USEPA/US on 04/16/2010 12:45PM

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To: Heather Valdez/R10/USEPA/US@EPA

From: <Carl.Brown@deq.idaho.gov>

Date: 04/16/2010 10:43AM

Cc: <Zach.Klotovich@deq.idaho.gov>

Subject: FW: Request for info related to control of existing rich burn

engines

We (meaning Zach) doesn't think we have any gas-fired engines with controls.

Carl

-----Original Message-----

From: Zach Klotovich

Sent: Thursday, April 15, 2010 3:30 PM

To: Carl Brown
Subject: RE: Request for info related to control of existing rich burn

engines

I'm not aware of any gas-fired engines with controls. I think we'd be

pretty safe with 0.

-----Original Message-----

From: Carl Brown

Sent: Thursday, April 15, 2010 2:44 PM

To: Zach Klotovich

Subject: FW: Request for info related to control of existing rich burn

engines

Do you have any idea?

-----Original Message-----

From: Valdez.Heather@epamail.epa.gov

[mailto:Valdez.Heather@epamail.epa.gov]

Sent: Thursday, April 15, 2010 2:38 PM

To: rhib461@ecy.wa.gov; toby@nwcleanair.org; paul@swcleanair.org;

stevev@pscleanair.org; Fran.McNair@orcaa.org; hasan@yrcaa.org;

CStuder@spokanecleanair.org; rpri@bcaa.net; LANDE.Gregg@deq.state.or.us;

Ebersole.Gerald@deq.state.or.us; max@lrapa.org; Carl Brown;

john.kuterbach@alaska.gov; Thomas Krinke; chris.kent@alaska.gov;

kwame.agyei@alaska.gov; natalia@swcleanair.org; Zach Klotovich

Subject: Request for info related to control of existing rich burn engines

Hi, I have a request from headquarters related to the NESHAP rule making

for existing spark ignition engines, If you know of others who wold have a

better handle on the current landscape for rich burn spark ignition

(gas-fired) engines in terms of how many of the existing engines that are

already in use have emission controls (non-selective catalytic reduction or

NSCR) installed please let me know who that would be. Rich can you forward

this to folks in the WA permit writers group who might be good contacts that

I did not include?

Headquarters is trying to get a handle on what the current landscape is for

rich burn spark ignition (gas-fired) engines in terms of how many of the

existing engines that are already in use have emission controls (nonselective catalytic reduction or NSCR) installed because they are looking at

what the impacts of the upcoming final NESHAP for existing spark ignition

engines would be if controls were required for those engines. It would be

helpful if we had some idea of how many of them already have these controls

even in the absence of the NESHAP. The engines we'd be concerned with are

those that are <500 HP at major sources of HAP and any HP at area sources of

HAP, since we already have limits on the ones that are >500 HP at major

sources.

Do you know of any estimates of how many of these engines are controlled

for the states in Region 10?

Heather Valdez

Environmental Engineer

EPA Region 10

Office of Air, Waste and Toxics

1200 6th Ave, Suite 900, AWT-107

Seattle WA, 98101

(206) 553-6220

valdez.heather@epa.gov

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

National Collision Repair Campaign:

http://www.epa.gov/collisionrepair/

R10 Collision Repair Campaign:

http://yosemite.epa.gov/R10/AIRPAGE.NSF/Collision+Repair

+Campaign/crc-home

Area Source Website:

http://www.epa.gov/ttn/atw/area/arearules.html