HomeMy WebLinkAboutHDR Report on Anchorage Area MSW 2013itnt� ONECOMPANY Memo
To: Aaron Love, Chugach Electric Association, Inc.
Prepared Karl Fryklind, P.E.
by.
Wade Ellis, P.E.
Teresa Peterson, EIT
Reviewed William (Ted) Hawley, PE
by:
Date: September 18, 2013
Subject: Technical Memorandum - Anchorage Area Municipal
Solid Waste Summary
Introduction
Project: Waste Characterization Summary
Contract 51862, Task Order 72
HDR 0249-217255
Job No:
This memorandum provides a summary of the Municipal Solid Wastes (MSW) produced within the Anchorage
Bowl area.
Anchorage Bowl Municipal Solid Waste Summary
I4DR contacted the Engineering Manager, Mark Madden, with the Municipality of Anchorage (MOA) - Solid
Waste Services Division, and he provided data for every class of hauler that delivers waste to the tipping
locations at the Central Transfer Station (CTS) and the Anchorage Regional Landfill (ARL). This includes data
ranging from individuals to commercial haulers, including a specific breakdown of the MSW that Alaska Waste
delivers.
The summary of monthly total tonnages is shown in Table 1 below and included waste delivered both to ARL
and CTS and a further breakdown for only Alaska Waste numbers is located in Table 2. For information, A
more detailed summary of the monthly tonnages received at both the ARL and CTS locations is attached as
Table 6. The totals shown include all wastes such as Construction and Demolition (C&D) wastes and MSW.
The Anchorage Recycle Program is limited to diverting an average of 10,600 tons a year, or 3 percent of the
total waste stream consisting of paper, aluminum cans and plastic bottles. This represents a limited recycling
and diversion program in Anchorage. Moving forward the MOA intends to recycle up to 20 percent of the
wastes that are placed in the landfill.
HDR Alaska, Inc. 1 2525 C Skeet, Suite 305 ! Phone 1907) 644.2000 1 Page 1 of 8
Anchorage, AK 99503-2632 I Fax (907) 644-2022
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Table 1. Anchorage Bowl Municipal Waste Total Tons per Month and Annually
.` Month
.2010 tons
. 2011 tons `
' 1012 tans
2013(tons).Average
Total '
Month tons
Total
' , :Total
Total =
.'.:Total "
Jan.
18,890
19,298
20,006
20,581
19,694
Feb.
18,043
17,474
19,665
19,141
18,581
Mar.
21,683
21,159
21,664
19,184
20,922
Apr.
23,822
23,387
26,390
21,567
23,792
May
32,008
34,366
35,202
30,035
32,903
June
35,144
31,345
31,822
28,367
31,669
July
31,849
29,830
32,671
27,437
30,446
Aug.
31,500
31,807
33,543
-
32,284
Sept.
29,380
29,410
30,542
-
29,777
Oct.
27,618
29,145
35,170
-
30,645
Nov.
23,494
20,400
25,389
-
23,095
Dec.
24,459
21,025
19,348
-
21,611
Total Year
317,891
308,646
331,413
183,953
Included in Table 2 below is the total MSW that is transported to both the ARL and the CTS by Alaska Waste.
Alaska Waste delivers an average of about 53% of the total annual volumes received at both the CTS and ARL
combined.
Table 2. Alaska Waste Total Tons per Month and Annually
Month
2010 tons
2011 tons
2012 tans
2013: tons
Average Total
Month tons�:
Total
-Total
Total
Total
Jan.
11,304
12,359
12,222
12,087
11,993
Feb.
10,768
11,240
11,532
10,726
11,067
Mar.
12,514
12,920
11,883
11,403
12,180
Apr.
13,161
13,672
13,324
12,604
13,190
May
15,225
16,118
16,231
15,686
15,815
June
16,103
16,405
15,778
14,830
15,779
July
15,694
15,637
15,992
16,026
15,837
Aug.
16,148
17,401
16,011
16,520
Sept.
14,827
15,564
14,259
14,883
Oct.
13,677
14,824
15,421
14,641
Nov.
12,980
13,048
12,299
12,776
Dec.
12,878
13,160
11,804
12,614
Total Year
165,279
172,348
166,756
93,362 11
Note: Alaska Waste delivers approximately 90 percent to the CTS and 10 percent to the ARL
HDR Alaska, Inc. 2525 C Street, Suite 305 Phone (907) 644-2000 Page 2 of 8
Anchorage, AK 99503-2632 Pac (907) 644-2022
www.hddnt.com
As can be seen in Tables 1 and 2, Seasonal variations with 50 percent swings from the January — February
timeframes to the summer months must also be considered when determining a WTE facility capacity.
C&D waste are typically diverted from waste streams entering a WTE facility, and as there is no separate
breakdown of Construction and Demolition (C&D) waste in Anchorage, we have estimated that Anchorage has
a similar percentage (15 percent) of C&D waste as the Matanuska-Susitna Borough (see discussion at the end).
Certain portions of C&D could be handled at a WTE facility if separated, but the system is not suitable for the
many heavy and/or bulky items commonly in C&D materials. The following Table 3. indicates the amount of
MSW available in Anchorage for WTE after diverting the C&D wastes.
Table 3. Estimated MSW available for WTE
MSW Source Average Annual Total with C&D
Diverted (tons)
ARL and CTS Total 271,000
Alaska Waste 143,000
Notes: 1- Numbers are rounded
2. Average of the totals in Tables 1 and 2
For Anchorage, the average percentage of growth is about 2.2 percent for the years 2010 through 2012;
however, the data from 2010 to 2011 and 2011 to 2012 were significantly different at -2.9 and 7A percent,
respectively. The population growth, based on the 2000 and 2010 U.S. Census for the Municipality of
Anchorage, had a 12.12 percent growth which equates to an average yearly population growth of 1.2 percent,
and could be used as a factor in longer term MSW growth rates.
Energy Content of the Waste
MSW varies considerably from day-to-day, from truck -to -truck on a given day, and seasonally. By its nature, it
is a nonhomogeneous mixture that defies simple definition in small quantities. However, experience has shown
that the variations tend towards averages in large enough quantities and long enough periods. The US
Environment Protection Agency provides data on MSW periodically. The following table is taken from their
report titled "Municipal Solid Waste in the United States: 2011 Facts and Figures".
Table 4. "Typical Municipal Solid Waste in the United States: 2011 Facts and Figures" and is based on
National Averages after Diversion
Material Type
Discarded Amounts
(Pi cent of Total
Paper and paperboard
14.8
Glass
5.1
Steel
6.8
Aluminum
1.7
Other nonferrous metals
0.4
Plastics
17.9
Rubber and leather
3.8
Textiles
6.8
HDR Alaska, Inc. 2525 C Street Suite 305 Phone (907) 644-2000 Page 3 of 8
Anchorage, AK 99503-2632 Fax (907) 644-2022
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Material Type - Discarded Amounts
(Percent of'Total
Wood 8.4
Other materials 2.0
Food, other 21.3
Yard trimmings 8.8
Miscellaneous inorganic wastes 2.4
Total MSW 100
Percentages of the types of waste streams received by the tipping locations were not available for Anchorage at
this time. WTE estimates will need to assume typical percentages for waste streams. The actual WTE potential
at the facility will vary depending on the "bumability" of the different waste types received. Several factors
that could affect the waste stream in Anchorage are identified below.
* Increased recycling will typically remove both higher and lower heating value components, as such
increased recycling does not typically have much effect on energy content, but would reduce the total
available feedstock. Typically, relatively heavy low higher heating value (HHV) (-0-100 Btu/lb)
components such as glass, steel cans, and aluminum cans offset the lightweight HHV (-11,000 —
14,000 Btu/lb) plastics and the paper products that are slightly above the average HHV (-6,000 to
7,500 Btu/lb).
41 The Anchorage wood lot that is operated by the Anchorage Soil and Water Conservation District
provides a place to dispose of trees and brush during the summer months, which subtracts some higher
Btu content materials from the waste stream. This material is mulched and re -used in the landscaping
market.
+ Yard waste is typically a lower energy content material that could have a seasonal effect of reducing
the Btu content of the feedstock. Increased diversion of this material could improve the energy content
of the feedstock.
Generally, a WTE is sized to accommodate the wide ranges of heat content of the MSW, as is typical with
seasonal and compositional changes in the waste. A heating value range in the range of 4,400 — 5,600 Btu/lb
would be expected for MSW in the composition range above. Since the WTE sector began producing power,
there has been an increase in the heating values of feedstock. Anecdotal evidence has pointed to increases in
plastics and packaging within the waste streams. HDR was recently involved a WTE project in Honolulu, with
the plant designed for 5,400 Btu/lb waste and the project achieved an acceptance test average over a seven day
period of 5,487 Btu/lb of waste. This is the highest test average that HDR has witnessed in 25 years in the
WTE business. Provided the waste stream composition discussion and limitations, we anticipate a higher
heating value near the upper portion of the Btu/lb range noted would be a reasonable assumption.
For future development, performing a waste characterization study in accordance with ASTM D 5231 -
Standard Test Method for Determination of the Composition of Unprocessed Municipal Solid Waste and
energy content testing could provide valuable information for any proposed WTE facility.
HDR Alaska, Inc. 1 2525 C Street, Suite 305 1 Phone (907) 6"2000 1 Page 4 of 8
Anchorage, AK 99503-2632 1 Fax (907)fi44-2022
www.hddw.com
Matanuska-Susitna Borough Waste Data
In an attempt to quantify the total amount of MSW that is produced in close proximity to Anchorage, HDR
contacted the MSB Solid Waste Division Manager, Jason Garner, and he provided four years of waste stream
data shown below in Table 5. The Matanuska-Susitna Borough (MSB), tracks C&D wastes separately for the
MSW and over the last four years it has averaged 15 percent of the total waste delivered to the Central Landfill.
Table 5.2009-2012 Waste Data for Matanuska-Susitna Borough
Year.
= Description
Total Tonnage
Percent of Waste
Stream
2009
Commercial
48,920.74
72.6%
C&D
10,357.45
15.4%
Residential
8,146.47
12.1 %
Total
67,424.66
2010
Commercial
50,453.74
73.5%
C&D
10,925.93
15.9%
Residential
7,273.05
10.6%
Total
68,652.72
2011
Commercial
49,129.81
71.2%
C&D
11,355.73
16.5%
Residential
8,472.58
12.3%
Total
68,958.12
2012
Commercial
50,032.39
75.1%
C&D
9,716.19
14.6%
Residential
6,840.07
10.3%
Total
66,588.65
Average
Yearly
Commercial
49,634.17
73.1%
C&D
10,588.83
15.6%
Residential
7,683.04
11.3 %
Total
67,906.04
Summary
The Municipality of Anchorage produced has been averaging nearly 320,000 tons of MSW in recent years, and
production is highly variable with annual swings showing increased production during the summer months.
The MSW composition is expected to be similar to that experienced by municipalities across the nation, and
energy content of the wastes likely ranging within the upper end of the historical averages of 4,400 — 5,600
Btu/lb, could be expected.
HDR Alaska, Inc. 2525 C Street, Suite 305 Phone (907) 644-2000
Anchorage, AK 99503.2632 Fax (907) 644-2022
www.hddnc.com
Page 5 of S
Sources
■ Email from Mark Madden with MOA MSW annual summaries for Anchorage.
■ Email from Jason Garner Acting MSB Solid Waste Manager with MSB Waste annual waste totals.
■ 2010 and 2012 United States of America Census data for the Municipality of Anchorage.
• USEPA's "Municipal Solid Waste in the United States: 2011 Facts and Figures" Table.
• JL Properties, Inc. "Anchorage WtE Combined Heat and Power Project" presentation.
Attachment
Table 6
HDR Alaska, Inc. 2525 C Street, Suite 305 Phone (907) 644-2000 Page 6 of 8
Anchorage, AK 99503.2632 Fax (907) 644-2022
www.hddnc.com
Table 6. Total Tons per Municipality of Anchorage
2010 (Tons)
2011 (Tons)
2012 (Tons)
2013 (Tans)
Month
ARL
CTS
TOTAL
ARL
CTS
TOTAL
ARL
CTS
TOTAL
ARL
CTS
TOTAL
Average Total Month
Jan.
4,093
14,797
18,890
4,159
15,139
19,298
4,636
15,369
20,006
4,819
15,762
20.591
19,694
Feb.
4,053
13,990
18.043
3,734
13,741
17,474
5,232
14,433
19665
5,021
14,120
19,141
18,581
Mar.
5,118
16.565
21683
5,165
15,994
21159
6,380
15,284
21664
4,011
15,173
19,184
20,922
Apr.
10,079
13,743
23,822
5,346
18,041
23,387
8,509
17,981
26,390
4,562
16,015
21,567
23,792
May
9,837
22,171
32,008
12,139
22,227
34,366
11,747
23,455
35.202
9,234
22,191
30,035
32,903
June
12,896
22,249
35.144
9,404
21,941
31,345
9,776
22,046
31,822
9,594
21,899
28,367
31,669
July
9,885
21,963
31,849
9,366
20.464
29,830
10,961
21,709
32.671
9,056
22,714
27,437
30,446
Aug.
8,884
22,616
31,500
9,358
22,448
31,807
11,598
21,945
33,543
32,284
Sept.
8,365
21015
29,980
9,206
20,204
29,410
10,439
20,103
30,542
29,777
Oct.
7,857
19,761
27,618
9,298
19,847
29,145
17,074
18,096
35,170
30,645
Nov.
6,548
16,947
23,494
4,403
15,997
20,400
9,101
16,288
25,389
23,095
Dec.
7,804
16,655
24,459
4,728
16,298
21,025
3,882
15,466
19,348
21,611
Total Year
95,419
222,473
317,891
86,308
222,339
308,646 1
109,335
222,077
331,413
52,431
143,504
183,953
Notes:
1. ARL: Arwhorage Regianal Landfill
2. CTS: Cemml Transfer Staliun
3. Total: Tole) Mwdcipal ofAnchomgc Landfill
4. C D Wasle is included in thew numbers,
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Mch-ge, p8 99503-2632 Fax (907) 644-2022
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