1 

### King, Melanie

From: David Lockard <DLockard@aidea.org>

Sent: Tuesday, April 07, 2015 5:03 PM

To: King, Melanie; Turner, Thomas E (DEC)

Cc: Alice.Edwards@alaska.gov; Smith, Rebecca T (DEC); Kuterbach, John F (DEC); David

Lockard

Subject: RE: Operating and standby gensets in rural Al aska communities impacted by the proposed

change in the definition of rural Alaska

Please see the minor correction to my e

‐ mail in yellow below. This does not change the estimate of 1

– 2 diesel gensets

replaced per year.

David

From: David Lockard

Sent: Monday, April 06, 2015 5:21 PM

To: King, Melanie; Turner, Thomas E (DEC)

Cc: Alice.Edwards@alaska.gov; Smith, Rebecca T (DEC); Kuterbach, John F (DEC); David Lockard

Subject: RE: Operating and standby gensets in rural Alaska communities impacted by the proposed change in the

definition of rural Alaska



### Melanie/Tom

‐

The gensets referenced below range from 100kW John Deeres to megawatt

‐ scale Caterpillars and EMD's. The

smaller gensets have expected operating lives of 60,000 hours (6.8 years). The larger ones typically last

100,000 hours (11.4 years).

The communities that are primarily on hydropower (approximately 11 of them), average approximately 90%

hydro. All of these hydro communities together average to about one continuously operating diesel

powerhouse, so the total is equivalent to 12 14 continuously operating diesel powerhouses.

I estimate that 1

‐ 2 diesel gensets will be replaced per year from this group, based on 12 gensets that last

between 7 and 11 years each.

Please let me know if you need any more info.

David Lockard

AK Energy Authority

907

‐ 771

‐ 3062

From: King, Melanie < King.Melanie@epa.gov >

Sent: Friday, April 03, 2015 1:47 PM

To: Turner, Thomas E (DEC)

Cc: Alice.Edwards@alaska.gov ; Smith, Rebecca T (DEC); Kuterbach, John F (DEC); David Lockard

Subject: Re: Operating and standby gensets in rural Alaska communities impacted by the proposed change in the

definition of rural Alaska2 

### Thanks Tom and David. My thinking is that the change requested in the letter would mainly impact new

engines installed in the future, correct? So, I think what would be most helpful is a ballpark number of new

engines that, on average, are expected to be installed each year in the additional areas that the state is

requesting EPA consider to be remote under the NSPS.

Melanie King

Energy Strategies Group

Sector Policies and Programs Division

Office of Air Quality Planning and Standards

U.S. Environmental Protection Agency

Mail Code D243-01

RTP, NC 27711

Phone: (919) 541-2469

Fax: (919) 541-5450

king.melanie@epa.gov

From: Turner, Thomas E (DEC) < tom.turner@alaska.gov >

Sent: Friday, April 3, 2015 5:41 PM

To: King, Melanie

Cc: Alice.Edwards@alaska.gov ; Smith, Rebecca T (DEC); Kuterbach, John F (DEC); Lockard, David A (AIDEA)

Subject: FW: Operating and standby gensets in rural Alaska communities impacted by the proposed change in the

definition of rural Alaska

Melanie,

It was pleasure to talk with by phone. As per your request, below please find estimate of the affected engines. Please

call if you have any questions or require further information.

Your time, guidance and assistance is greatly appreciated.

Best regards,

Tom Turner

(907) 269

‐ 8123

From: David Lockard [ mailto:DLockard@aidea.org ]

Sent: Friday, April 03, 2015 11:28 AM

To: Turner, Thomas E (DEC)

Cc: Lockard, David A (AIDEA); Noonan, Kris W (AIDEA)

Subject: Operating and standby gensets in rural Alaska communities impacted by the proposed change in the definition

of rural Alaska

Tom

‐

In the communities impacted by the recent proposed change in the NSPS definition of rural Alaska, these are the

approximate number of gensets:

Continuously operating: 13

Available: 1063 One of the reasons for the large difference between these numbers is that several of the larger communities, with

multiple diesel gensets for backup power, get over 90% of their electricity from renewal energy.

Please let me know if you have any questions.

David

771

‐ 3062