1. Biosolids Planning – Core Team Meeting
City of Bellingham
June 9, 2017

2. Health & Safety Minute: Back Care

3. Back Injuries are Common!
80% of Americans will have a back injury at some time
Back injuries are the second most common cause of missing work (one million injuries per year)
Injured backs are susceptible to re-injury
Can lead to chronic pain
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4. Back Injury Prevention
Nutrition
Keep those extra pounds off to avoid overloading your back
Exercise
Keeps us flexible and works those “supporting” muscles
Posture
Lift with your legs
Keep moving

5. Agenda Topic Description Leader Introduction (5 mins)
Review agenda and meeting objectives
Ian
Offsite Assessment (10 mins)
Overview of the offsite assessment that was conducted to identify “representative” sites as the basis for the Phase 1 TBL+ evaluation.
Preliminary Layouts (10 mins)
Overview of the preliminary process layouts at Post Point that form the basis of the Phase 1 TBL+
Steve
Preliminary SWEET and GHG Accounting Results (15 minutes)
Overview of SWEET and GHG Accounting approach
Review of preliminary results and assumptions
Preliminary TBL+ (90 mins)
Summary of public input on TBL+ criteria
Review preliminary TBL+ scoring (draft inputs for all categories are now available except cost factors)
Confirm scoring approach and if criteria weighting is needed
Susanna
Next Steps (10 mins)
Action Items
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6. Brown and Caldwell

7. Offsite Assessment
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8. Offsite Assessment Objective
Determine if an offsite alternative is viable for consideration
Evaluated parcels within and near Bellingham for viability either as a soil blending site or as a remote solids processing facility
Assumed trucking dewatered cake to an off-site facility (aka, Alternative 3) would need to be limited to within 25 miles of Post Point
Assumed pumping undigested sludge to an offsite facility (aka Alternative 4) would need to be limited to within 10 miles of Post Point
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9. Offsite Considerations
Advantages
Easier implementation of co-digestion
Reduces trucking and neighborhood impacts to Fairhaven
Economy of scale/regional option
Could preserve future capacity for Post Point Liquids treatment
Could open door to privatization options
Disadvantages
Land purchase
Permitting
Conveyance from Post Point
Operations staff at 2 locations
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10. Confirmed: Offsite Areas Available
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11. Preliminary Layouts
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12. Conceptual Alternatives
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13. Baseline: Post Point Today
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14. Alternative 1: Class B Digestion, Land Application
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15. Alternative 2: Class B Digestion + Dryer, Dried Fertilizer Product
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16. Alternative 3: Class A Digestion Onsite, Soil Blend Production Offsite
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17. Alternative 3: Class A Digestion Onsite, Soil Blend Production Offsite
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18. Alternative 4: Off-Site Class A Digestion and Soil Blend Production
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19. Future: Planning for Expansion
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20. Preliminary SWEET/GHG Accounting Results
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21. Alternative Average Daily Output Summary (Year 2035)
SWEET Output
Alternative Average Daily Output Summary (Year 2035)
Baseline
Alt 1
Alt 2
Alt 3
Alt 4
Final Product, Wet (WT/day) 6 51 12
105
NG Req. (cf/day)
27120
Electricity Req. (kWh/day)
10345
9549
14721
10146
13329
Power Generation (kWh/day)
21019
23194
Net Power (kWh/day)*
-11471
-13048
-9865
No. of Trucks Required (trucks/day)
0.19
1.71
0.61
5.02
3.50
Vehicle Fuel Consumed (gal/day) 17
154 24 38 26
Digester Gas Produced (scf/day)**
364970
402725
Methane Produced (scf/day)**
218982
241635
Polymer Use (kg/day)
191
215
202
*Negative net power represents power consumed; positive new power represents power produced **Alt 1,3,4, 90% biogas utilized in cogen. Alt 2, 70% biogas utilized in dryer. Remaining biogas is flared for all alternatives.
Major Assumptions:
Material dryness: Dewatered cake is 22% dry, dried product is 92% dry
Volatile solids destruction: Mesophilic is 58%, TPAD is 64%
Soil blend is 2:1:1 biosolids, sand, and sawdust (on a volume basis)
Trucks can carry 30 tons or 35 cubic yards of material (dried product bulk density is 60% of water)
Roundtrip trucking distances: 450 miles for Class B cake, 200 miles for dried product, 20 miles to offsite facility, 20 miles for local distribution of soil blend

22. GHG Accounting Major Assumptions:
Bellingham Phase 1 Alternative Output Summary
Greenhouse Gas Emissions, Tonne CO2e/year
Baseline
Alt 1
Alt 2
Alt 3
Alt 4
Scope 1
Consumption of Natural Gas
525
Consumption of Vehicle Fuel 65
658 91
142 97
Fugitive Emissions
1217
233
122
329
Scope 1 Total
1807
891
214
471
426
Scope 2
Electricity Required
1767
1631
2515
1733
2277
Power Generated
-3591
-3962
Scope 2 Total
-1959
-2229
-1685
Scope 3
Production of Polymer
628
707
663
Production of Natural Gas
139
Production of Vehicle Fuel 11
107 15 23 16
Scope 3 Total
777
814
722
686
678
Credits
Fertilizer Offset
-781
-698
Carbon Sequestration
-1027
-918
Credits Total
-1808
-1616
Total, Tonne CO2e/Year
4350
(2063)
1642
(2688)
(2197)
Difference from Baseline
(6413)
(2708)
(7038)
(6547)
Major Assumptions:
Energy: kg/kWh, 53 kg/MMBtu natural gas, 2.7 kg/liter diesel
Fertilizer offset: 4 kg/kg-N, 2 kg/kg-P
Carbon sequestration: 0.25 kg/kg-dry of biosolids
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23. Preliminary TBL+ Results
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24. TBL+ Comparison of Alternatives8 E2
Global Impact 7 E1
Local Impact 6 S2
Assets E2
Global Impact 5 S1
Health
& Safety S1
Health
& Safety
Number of Objectives Met 4 F2
Life Cycle $ F2
Life Cycle $ E2
Global Impact 3 F1
Capital $ F1
Capital $ E1
Local Impact E1
Local Impact E1
Local Impact 2 T2
Efficiency T2
Efficiency S2
Assets S2
Assets S2
Assets 1 T1
Reliability/ Performance T1
Reliability/ Performance S1
Health
& Safety T1
Reliability/ Performance
Ideal
Alternative
Alt. 1
Alt. 3
Alt. 4

25. TBL+ Spreadsheet
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26. Next Steps
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27. Next Steps Complete cost estimates Finalize Phase 1 TBL+ evaluation
TBL+ Workshop
Schedule regulatory check ins
Draft Technical Memorandum 1
Community Workshop and Council Briefing
Final Phase 1 Technical Memorandum
Proceed to Phase 2
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