September 11, 2002

1
Public Workshop 2 Solids Management Master Plan
Snyderville Basin Water Reclamation District
www.sbwrd.org
September 11, 2002
174083.T1.05
2
Agenda

• Introductions
• Accomplishments of Workshop 1
• Biosolids Processing Options
• Criteria for Evaluating Alternatives
• Weighting and Scoring Process
• Weighting the Criteria

3
Project Goal

• Identify an implementation strategy to allow
  reliable solids management for the next 20 years
  in a socially, financially, and environmentally
  responsible manner for the
• East Canyon WRF
• Silver Creek WRF

4
Project Team
SBWRD Customers
Board of Trustees
Bob Mayers
Project Manager
Ron Sieger
Megan Moore
Technical Advisor
Decision Process Support
5
Project Schedule
Item
Date
Major Agenda Items
Workshop 1
Wed 8/14/02
Introductions
Project and Processes Overview
Stakeholder Vision and Issues
Workshop 2
Evaluation Criteria and Weights
Wed 9/11/02
Discussion of Decision Modeling Tools
Workshop 3
TBD
Results of Decision Modeling
(October)
Draft Committee Consensus
Report Issued
Wed 11/06/02
6
Accomplishments of Workshop 1

• Informed Stakeholders
• District Operations
• Wastewater Treatment
• Biosolids Management Issues
• Decision Making Process

7
Accomplishments of Workshop 1

• Defined Evaluation Criteria
• Public Acceptance
• Environmental Protection
• Regulatory Compliance
• Plant Operations

8
Lets Use the Right Words

• Sludge - Negative connotation untreated solids
  from a treatment facility
• Solids or Residuals - Same as above, but tend to
  be more acceptable
• Biosolids - New word, now in Websters. Those
  solids which have been processed so they are safe
  for agricultural land application as defined by
  the regulations.

9
Biosolids Processing Options
Solids from Treatment Plant
Thickening
Stabilization
Thickening
Dewatering
Further Processing
Beneficial Use or Disposal
10
Biosolids Processing Options--
Thickening
Solids from Treatment Plant
By SBWRD
Thickening
Stabilization
Thickening
Dewatering
Further Processing
Beneficial Use or Disposal
None
Gravity
DAFT
Gravity Belt
Rotary Drum
Centrifuge
11
Biosolids Processing Options--
Stabilization
Solids from Treatment Plant
By SBWRD
Thickening
Stabilization
Thickening
Dewatering
Further Processing
Beneficial Use or Disposal
None
Anaerobic Digestion
Aerobic Digestion
ATAD
Lime Stabilization
Lagoons
Thermal Hydrolysis
Pasteurization
(Class A B)
12
Biosolids Processing Options--
Thickening
Solids from Treatment Plant
By SBWRD
Thickening
Stabilization
Thickening
Dewatering
Further Processing
Beneficial Use or Disposal
None
None
Gravity
Rotary Drum
Centrifuge
13
Biosolids Processing Options--
Dewatering
Solids from Treatment Plant
By SBWRD
Thickening
Stabilization
Thickening
Dewatering
Further Processing
Beneficial Use or Disposal
None
Belt Filter Press
Centrifuge
Drying Beds
Pressure Filters
Vacuum Filters
14
Biosolids Processing Options--
Further Processing
Solids from Treatment Plant
By SBWRD or Outsourced
Thickening
Stabilization
Thickening
Dewatering
Further Processing
Beneficial Use or Disposal
None
None
Thermal Drying
Composting
Long-Term Drying
Vermicomposting
Lime Stabilization
Lime Pasteurization
(Class A B)
15
Biosolids Processing Options--
Beneficial Use or Disposal
Solids from Treatment Plant
By SBWRD or Outsourced
Thickening
Stabilization
Thickening
Dewatering
Further Processing
Beneficial Use or Disposal
Land Application

• Agriculture
• Golf Courses Parks
• Forested Land
• Rangeland
• Reclamation

Distribution Marketingof Compost/Pellets
Dedicated Land Disposal
Monofill Disposal
Landfill Disposal
Incineration/Ash Disposal
16
Decision Making Process - Six Steps to Success
2
1
3
Frame the problem
4
5
6
Helps the Team Efficiently Make and Implement
Quality Decisions
17
Evaluation Criteria
Smells Good,Looks Good

• Public Acceptance
• Odor Potential
• Local Product
• Dust Pollution
• Traffic Congestion
• Noise Pollution
• Light Pollution

18
Evaluation Criteria
Thank You, SBWRD

• Environmental Protection
• Beneficial Use
• Air Quality
• Surface Water Contamination
• Groundwater Contamination

19
Evaluation Criteria
SBWRD Has a Great Plan!

• Regulatory Compliance
• Long-Term Viability
• Flexibility to Meet Future Regulations

20
Evaluation Criteria
This New Facility is Great!

• Plant Operations
• Product Quality
• Control
• Liability
• Operational Flexibility
• Recycle Streams

21
Weights Vs. Scores

• Weights are Subjective
• Based on Stakeholder Values
• Which Criteria are Most Important to You?

• Scores are Factual
• Based on Technical Analysis
• Quantitative Measurement of Qualitative Criteria

22
Weighing the Criteria
Id like to see a local product developed.
I dont want to smell the plant!
Liability.Yes, we dont want any lawsuits.
23
Scoring the Criteria
vs.
0 Points
10 Points
24
Benefit to Cost Ratio Example
Subjective Score (Provided By You)
Raw
Alternative
Benefit
Weight
A
6.0
B
2.9
C
7.5
D
15.0
25
Benefit to Cost Ratio Example
Objective Score (Provided By Technical Team)
Raw
Raw
Alternative
Benefit
Benefit
Weight
Score
A
6.0
5
B
2.9
8
C
7.5
2
D
15.0
2
26
Benefit to Cost Ratio Example
Raw
Raw
Weighted
Alternative
Benefit
Benefit
Benefit
Weight
Score
Score
X

A
6.0
5
30
B
2.9
8
23
X


C
7.5
2
15
X
X

D
15.0
2
30
27
Benefit to Cost Ratio Example
Provided By Technical Team
Raw
Raw
Weighted
Cost
Alternative
Benefit
Benefit
Benefit
(Millions)
Weight
Score
Score
A
6.0
5
30
50
B
2.9
8
23
30
C
7.5
2
15
20
D
15.0
2
30
20
28
Benefit to Cost Ratio Example
Raw
Raw
Weighted
Benefit
Cost
Alternative
Benefit
Benefit
Benefit
/ Cost
(Millions)
Weight
Score
Score
Ratio
/

A
6.0
5
30
50
0.60
B
2.9
8
23
30
0.77
/

/

C
7.5
2
15
20
0.75

D
15.0
2
30
20
1.50
/
29
Benefit to Cost Ratio Example
30
Project Goal

• Identify an implementation strategy to allow
  reliable solids management for the next 20 years
  in a socially, financially, and environmentally
  responsible manner for the
• East Canyon WRF
• Silver Creek WRF

31
Lets Get to Work!
Visit the website at www.sbwrd.org to see the
results of todays workshop.
32
Sample Evaluation 1
33
Sample Evaluation 2 (Step 1)
Public Acceptance
Environmental Protection
Regulatory Compliance
Plant Operations
Odor Potential
Beneficial Use
Long-Term Viability
Product Quality
Local Product
Air Quality
Flexibility to Meet Future Regs
Control
Dust Pollution
Surface Water Contamination
Liability
Traffic Congestion
Groundwater Contamination
Operational Flexibility
Noise Pollution
Recycle Streams
Light Pollution
Total from Exercise 1
25
Total from Exercise 1
20
Total from Exercise 1
20
Total from Exercise 1
35
34
Sample Evaluation 2 (Step 2)
0
Light Pollution
Sum must equal
25
20
20
35
Total from Exercise 1
Total from Exercise 1
Total from Exercise 1
Total from Exercise 1
35
East Canyon Water Reclamation Facility
Air
Bar Screens
Grit Removal
Selector
Wastewater
Biological Reactor
Solids Contact Clarifier
Grit
Screenings
Secondary Clarifier
To Landfill
Sand Filters
Alum
UltravioletDisinfection
Solids Storage
Dewatering
Creek
Cake
Reuse/ Disposal
Silver Creek flowsheet is similar.