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BECKHAM, LISA

From: Gray, Sterling <sterling.gray@urs.com>

Sent: Monday, June 02, 2014 3:33 PM

To: BECKHAM, LISA

Subject: RE: APS Four Corners

I should add that we can offer this very low guarantee because the plant burns a low-S western fuel and is equipped 

with baghouses. 

Sterling M. Gray, PE | Business Development Manager 

URS Corporation | Process Technologies 

9400 Amberglen Blvd | Austin, TX 78729 

T. 512-419-5653 |C. 512-633-4975 | E. sterling.gray@urs.com

www.urs-processtechnologies.com

Partnering for Pinnacle Performance 

From: Gray, Sterling 

Sent: Monday, June 02, 2014 5:30 PM 

To: 'BECKHAM, LISA' 

Subject: RE: APS Four Corners 

Yes – that’s correct. 

Sterling M. Gray, PE | Business Development Manager 

URS Corporation | Process Technologies 

9400 Amberglen Blvd | Austin, TX 78729 

T. 512-419-5653 |C. 512-633-4975 | E. sterling.gray@urs.com

www.urs-processtechnologies.com

Partnering for Pinnacle Performance 

From: BECKHAM, LISA [mailto:BECKHAM.LISA@EPA.GOV] 

Sent: Monday, June 02, 2014 4:54 PM 

To: Gray, Sterling 

Subject: RE: APS Four Corners 

Sterling- I just noticed I missed read your previous email. I was thinking it said 1.5 ppm instead of 0.0015 

lb/MMBtu. I just want to confirm that number, which would be about 517 ppb (0.517 ppm). 

Lisa 

From: Gray, Sterling <sterling.gray@urs.com> 

Sent: Friday, March 28, 2014 11:27 AM 

To: BECKHAM, LISA 

Subject: RE: APS Four Corners 

 

Thank You. By the way – did you used to work for KY DAQ? I think I may have given a presentation at your offices in 

Frankfort in mid-2000’s.

You can find additional information about our SO3 control technology at:
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http://urs-processtechnologies.com/services/air-pollution-control/so3-control-technologies/

For applications similar to Four Corners (fuel and plant configuration), we have offered guarantee for SAM emissions of 

no more than 0.0015 lb/MMBtu.

Kind regards, Sterling

Sterling M. Gray, PE | Business Development Manager

URS Corporation | Process Technologies 

9400 Amberglen Blvd | Austin, TX 78729

T. 512-419-5653 |C. 512-633-4975 | E. sterling.gray@urs.com

www.urs-processtechnologies.com

Partnering for Pinnacle Performance

From: BECKHAM, LISA [mailto:BECKHAM.LISA@EPA.GOV] 

Sent: Friday, March 28, 2014 1:12 PM 

To: Gray, Sterling 

Subject: RE: APS Four Corners

 

It is still very much under review.

From: Gray, Sterling [mailto:sterling.gray@urs.com] 

Sent: Friday, March 28, 2014 11:12 AM 

To: BECKHAM, LISA 

Subject: RE: APS Four Corners

 

Lisa – Thank you for the information. Has the H2SO4 permit limit been set yet – or is it still in review?

Sterling

Sterling M. Gray, PE | Business Development Manager

URS Corporation | Process Technologies 

9400 Amberglen Blvd | Austin, TX 78729

T. 512-419-5653 |C. 512-633-4975 | E. sterling.gray@urs.com

www.urs-processtechnologies.com

Partnering for Pinnacle Performance

From: BECKHAM, LISA [mailto:BECKHAM.LISA@EPA.GOV] 

Sent: Friday, March 28, 2014 12:21 PM 

To: Gray, Sterling 

Subject: RE: APS Four Corners

 

Hi SterlingThe PSD permit will have an H2SO4 limit. Most other BACT limits have been set on a lb/MMBtu basis, but EPA has set a 

ppm-based limit in at least one consent decree. 

Lisa Beckham

Environmental Engineer

Air Permits Office

EPA Region 9

(415) 972-3811
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From: Lee, Anita 

Sent: Friday, March 28, 2014 10:13 AM 

To: Gray, Sterling 

Cc: BECKHAM, LISA 

Subject: RE: APS Four Corners

 

Hi Sterling,

I am not working on the permitting side of the SCR installation on Four Corners Units 4 and 5. I’ve cc’ed Lisa Beckham 

from the Air Permits Office in Region 9, who is the lead on this permit application.

Thanks!

Anita

Anita Lee, PhD

Environmental Scientist

US EPA, Air Division, Planning Office (Air-2)

75 Hawthorne Street

San Francisco, CA 94105

(415) 972-3958

From: Gray, Sterling [mailto:sterling.gray@urs.com] 

Sent: Friday, March 28, 2014 9:44 AM 

To: Lee, Anita 

Subject: APS Four Corners

 

Hi Anita: 

 

I understand that Arizona Public Service Company will be moving forward with an SCR installation at their Four Corners 

plant on Units 4/5 for NOx control. 

 

Are you involved in the permitting for this project? 

 

Will they have a sulfuric acid mist emissions limit for the project? 

 

They have inquired about our SBS Injection technology and how low we can reduce the emissions. 

 

Curious, Sterling 

 

Sterling M. Gray, PE | Business Development Manager 

URS Corporation | Process Technologies 

9400 Amberglen Blvd | Austin, TX 78729

T. 512-419-5653 |C. 512-633-4975 | E. sterling.gray@urs.com

www.urs-processtechnologies.com

Partnering for Pinnacle Performance

 
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