1. Anchorage Regional Landfill Landfill Gas-to-Energy Project
Renewable Energy Alaska Project Forum
January 11, 2012

2. Project Organization Grant Contributor Power Customer
Design, build, operates project facilities
Own Power Plant and electrical infrastructure
Owns, operates landfill and LFG Collection system
Owns LFG Processing and transmission facilities
Grant Contributor
Power Customer

3. Anchorage Regional Landfill
300,000 tons annually
8 million tons in-place
22 million ton total capacity
Expected life – 2050

4. Landfill Gas Generation
Organic Materials In
Waste Stream
Anaerobic
Decomposition
Moisture
Heat
Landfill Gas
(CH4, CO2
+ trace organics)

5. Gas Characteristics Typically Makeup - 50% Methane, 50% CO2
Typical energy content – 500 BTU/ft3
Typical moisture content – saturated
May contain other constituents (Oxygen, Nitrogen, VOCs, siloxanes, H2S, etc.)

6. LFG Generation General industry rules of thumb:
Each million tons of waste in place has the potential to generate cf/min of LFG.
Each ton of waste in place has potential to generate 3,900 – 6,600 cf of LFG over the life of the landfill.

7. Expected LFG Generation
Current LFG Production
2007 ~ 1,000 cfm/ 30 MBtu/hr
2045 ~ 2,200 cfm/ 66 MBtu/hr
2017 ~ 1,500 cfm/ 45 MBtu/hr
Estimated Landfill Life
EPA LMOP Generation Model

8. Proposed Project Layout
Gas Processing Facility
Existing Gas Collection System
Existing Blower/Flare Site
Processed Gas Pipeline
Proposed Power Plant

9. Gas Collection System (GCS)
Purpose: Landfill emission control; collects LFG to central facility
Components: Wells, piping, blowers, flare (constructed by SWS in 2006 with future expansions as needed)
Ownership: SWS
Operator: SWS

10. Current System in Place
Constructed 2006 for air quality compliance.
Blower plant
2,400 scfm capacity
Enclosed flare
2,000 scfm capacity
Gas collection wells and piping
35 vertical wells
12 horizontal wells
8 leachate system connections
Continued expansion as landfill ages.

11. Gas Processing System (GPS)
Purpose: Process gas from field to fuel quality; deliver to Power Plant
Operation: Gas delivered to GPS. Condensate and other undesirable components removed from LFG returned to GCS. DU takes ownership of LFG at Title Point (T). Delivered to Power Plant by pipeline.
Ownership: SWS
Operator: Doyon Utilities
Gas Processing System
LFG
CONDENSATE
LFG T
PIPELINE
Project Cost: $3.8 million
Component Financing: $2 million from AEA Grant, all other costs paid by DU.

12. JBER Distribution Grid
Power Generation
ARL
FENCE LINE
LFG
JBER
PIPELINE
JBER Distribution Grid
Power Generation
Purpose: Uses LFG as fuel to produce electricity. All power delivered to JBER through Ft. Rich D Street Substation
Components: Generators, switch gear and related controls.
Ownership: Doyon Utilities
Operator: Doyon Utilities

13. Power Plant Under consideration: Jenbacher J420 Generators
5th generating unit
Organic Rankine heat recovery units
Jenbacher J420 Generators
1.4 MW per Unit
Initial installation – 4 units
Operates on either LFG or commercial natural gas
Change fuel source on the fly

14. Contract Timeline COMMISSIONING DEVELOPMENT
2011
2012
2013
PERFORMANCE TESTING
CONTRACT PERFORMANCE
DEVELOPMENT
COMMISSION
20 YEARS
90 DAYS
CONTRACT
AWARD
DEVELOPMENT
Permitting, design, procurement and construction of GPS and Power Plant
No gas sold or delivered.
No minimum gas purchase requirement.
COMMISSIONING
Startup and testing of all components and systems
Gas delivered at no cost.
No minimum gas purchase requirement.
90 day maximum duration.

15. Contract Timeline CONTRACT PERFORMANCE PERFORMANCE TESTING
2011
2012
2013
PERFORMANCE TESTING
CONTRACT PERFORMANCE
DEVELOPMENT
COMMISSION
90 DAYS
20 YEARS
CONTRACT
AWARD
PERFORMANCE TESTING
Fine tune operation of GCS, GPS and power plant for optimization
All gas sold at contract price.
No min. gas purchase requirement.
Ends latter of 1/1/13, first month after Commissioning or 24 mos. from Contract Award
CONTRACT PERFORMANCE
Full system operation.
Tier gas pricing in effect.
Take Or Pay minimum gas purchase requirement.

16. A Win – Win Project Municipality
JBER
The project will produce ~50% of the JBER power demand
Dual fuel capability assures stable power supply
Immediate availability of fuel provides more reliable power in emergencies.
Municipality
Generates revenue off a waste product.
Revenues will offset operating costs which will reflect in user tipping fees.

17. Landfill Gas to Energy Questions? Contact Mark Madden, P.E. Director
Municipality of Anchorage
Solid Waste Services