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### Tanya Parise

From: Scott McBryde [smcbry de@miratechcorp.com]

Sent: Friday, May 20, 2011 7:27 PM

To: Tanya Parise Subject: RE: RE: DPF info for engines in rural Alaska

Attachments: CBS4V-06-SD_2009-09-25.pdf

Hi Tanya,

I was traveling all last week (in Alaska as part of the trip ironically) and this week working on some detailed commercial items so just catching up. I have answered a few ques tions below, for the one I need to double check with our engineering team.

Best regards,

Scott McBryde, Western US & International Sales Manager - Power Generation MIRATECH Corporation Primary: 909.821.0039 (Cell), Direct Inside Sales: 918.794.0341

Emissions Solutions for industrial engines: smcbryde@miratechcorp.com or www.miratechcorp.com 420 South 145th East Ave, Tulsa, OK 74145-4712 150 El Camino Real - Suite 112, Tustin CA 92780

From: Tanya Parise [mailto:parise.tanya@ecrweb.com]

Sent: Monday, May 09, 2011 7:55 PM

To: Scott McBryde Subject: RE: RE: DPF info for engines in rural Alaska Importance: High



### Scott,

I’m following up for Melanie King to get some additional information on DPF. I was on the call where you presented information about Miratech traps. How much would you estimate that installation costs would be for a trap on an engine located in a remote area of Alaska?

I can only speak to the hardware cost for a DPF that we would sell to an engine dealer or buyer/re-seller in AK. On a normalized basis anywhere from 25-50$/kW for the DPF price alone.

If used oil is blended into the fuel that is burned, what is the impact? I saw the pollutants to avoid in the Installation Guide you sent (and that they should be bel ow 5 ppm) and also noted the reference to the projectspecific documents provided by Miratech for other guide lines on the fuel. Specifically, what would be the impact if using fuels mixed with used lubricating oil (up to 1.75% of the total fuel, with the sulfur content of the used lubricating oil being <200 ppm and meeting the on-specification levels and properties for used oil in 40 CFR 279.11)? It looks like some of the on-specification levels would be higher than what is recommended by Miratech. What are the implications of that?

TBD from engineering.

We’ve gotten some concerns from Alaska indicating that space is a premium at some of their power plants. What are the space requirements for a complete installation? I believe a 250 KW engine is a common size in these areas, if that’s helpful.

See attached a sales drawing for the product we’d sell for this size engine, not really big. Installation challenges would be more likely on the bigger units, say 750HP and up.2 Lastly, we got some concerns about the disposal of the waste from the filter after cleaning it. One concern was that there may not be facilities to handle the waste and that it could be hazardous. Can you speak to how this could be addressed in remote portions of Alaska?

This was a topic at the Air & Waste Management Seminar I had presented at last week. It is unclear at the

moment as no national rule on this exists. What I advis e clients and customers is that any ash or waste from the filter should be disposed of accordingly to state and local laws, similar to say waste oil. I also advise we are not in a position to say what the state and local requirements may be and that they should consult the local DEQ expert.

If some of the these questions are answered in the material you’ve already sent, could you point me to it?

I look forward to your response.



### Tanya Parise

Chemical Engineer
EC/R Incorporated

501 Eastowne Drive, Suite 250
Chapel Hill, NC 27514
(919) 484

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