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Basin-Specific Feasibility Studies,ECP Basins
Evaluation of Alternatives
Basin-Specific Feasibility Studies,ECP Basins
Evaluation of Alternatives
August 21, 2002August 21, 2002
Presentation to STA Design Review Staff
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Study AreaStudy Area
Seven ECP Basins S-5A, S-6, S-7, S-8, C-139 &
C-139 Annex, and C-51 West Grouped into six STA-specific
study areas (STA-1E, STA-1W, STA-2, STA-3/4, STA-5, STA-6)
Also considered Acme Basin B for one alternative at STA-1E
Preliminary Evaluations Completed for Each STA
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basic GuidanceBasic Guidance
Evaluation Methodology Evaluation of Phosphorus and other Technical
Parameters• Walker’s DMSTA Model is primary tool used in evaluation of
phosphorus parameters• Supplemental Technology Standard of Comparison (STSOC)
is used for other parameters
Environmental Parameters - STSOC used
Economic Parameters
Focus Today Is On Phosphorus Removal, Economics
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
ObjectivesObjectives
For Each STA, Identify At Least One Alternative That: Is Capable of Achieving Assumed Discharge
Target of 10 ppb (Long-Term Geometric Mean) Can Be Completed On Or Before December 31,
2006
Other Alternatives Were Considered That May Not Meet One (Or Both) of Those Objectives
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
EconomicsEconomics
50-Year Project Life (2007-2056)* Both Capital and Incremental O&M Costs
Estimated All costs estimated in 2002 Dollars
Present Worth of Alternatives Computed As Of 12/31/02 Costs Escalated at 3%/yr from 2002 Discount Rate of 6-3/8%/yr*
* Consistent With Current Federal Planning Guidance
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Treatment TechnologiesTreatment Technologies
For the ECP Basins, Primary Reliance on Submerged Aquatic Vegetation (SAV) To Achieve Objectives Based Analysis on Performance Similar to That in Cell 4 of
the ENR Project (SAV_C4) As Recommended in STSOC Considered Potential Impact on Treatment Performance If
That Level of Performance Is Not Replicated (e.g., Sensitivity Analysis)
Also Considered TP Reduction in Reservoirs Upstream of STAs, Where Presently Planned TP Reduction Performance Estimates Preliminary
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Sensitivity AnalysesSensitivity Analyses
Sensitivity Analyses of Phosphorus Reduction Parameters Variation in BMP Performance
• Change in Inflow Concentration only
Variation in SAV Performance• Change in SAV vegetation community only
All Input Parameters (DMSTA Sensitivity Model)– Change in each parameter (over 100-180 DMSTA runs)
• Uncertainty Analysis
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
STA 1WSTA 1W
Tributary Area Consists of S-5A Basin
Additional Inflows From Lake Okeechobee Include: BMP Makeup Water STA Irrigation Water
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
STA-1WSTA-1W
STA-1W Is Complete and In Operation
Approx. 6,670 Acres in 3 Parallel Flow Paths
Emergent Macrophyte Marsh In Cells 1, 2, 3 and 5A
SAV In Cells 4 and 5B Analyzed as
SAV_C4Legend:
Existing SAV Existing Spillway
Existing Pump Station Existing Control Structure
Existing Seepage
Pump Station
Cell 1
Cell 5A
Cell 3
Cell 2
Cell 5B
Cell 4
A.R.M. LoxahatcheeNational WildlifeRefuge (WCA 1)
EffectiveCell Area (ac) 1 1,490 2 941
3 1,0264 3585A 5625B 2,293
Total 6,670 acN
G-259
G-258
G-305 A-V
G-304 A-J
G-254 A-I
G-327 A
G-306 A-J
G-255
G-256
G-257 L-7Canal
DischargeCanal
Ocean Canal
G-252 H-J
S-5AS
G-300
G-303
G-302
G-308
G-309
S-5A
G-251
G-310
G-253 A-J
G-250 S
G-301
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
STA-1WSTA-1W
Most Hydrologically Complex of the STAs Operation Significantly Influenced by
Seepage Entering STA From WCA-1 Higher Estimated Inflows From Seepage Than At
Any Other STA Seepage Further Increased Due to Presence of
Seepage Collection Canal Between Cell 5A and WCA-1
Documented Less-Than-Ideal Flow Distribution in Cells 1-4
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
STA-1WSTA-1W
Under High Rates of Flow, Side Discharges From Cell 3 (G-308) and Cell 4 (G-309)
Difficulty in Controlling Flow Distribution Between Cells 1 and 2 G-255 Not An Operable
Structure
Two Outflow Pumping Stations (G-251 and G-310)
Legend:
Existing SAV Existing Spillway
Existing Pump Station Existing Control Structure
Existing Seepage
Pump Station
Cell 1
Cell 5A
Cell 3
Cell 2
Cell 5B
Cell 4
A.R.M. LoxahatcheeNational WildlifeRefuge (WCA 1)
EffectiveCell Area (ac) 1 1,490 2 941
3 1,0264 3585A 5625B 2,293
Total 6,670 acN
G-259
G-258
G-305 A-V
G-304 A-J
G-254 A-I
G-327 A
G-306 A-J
G-255
G-256
G-257 L-7Canal
DischargeCanal
Ocean Canal
G-252 H-J
S-5AS
G-300
G-303
G-302
G-308
G-309
S-5A
G-251
G-310
G-253 A-J
G-250 S
G-301
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Model ApproachModel Approach
Effective Areas of Cells 3 and 4 Limited to The Area Upstream of G-308 and G-309 Cell 3 Area Reduced From 1,026 to 700 Acres Cell 4 Area Reduced From 358 to 250 Acres
Flow Distribution Between Cells Approximated Substantial Seepage Inflows Modeled As To
Cells 1 and 3 Also Considered Cell-Cell Seepage, Cells 1
and 3 to Cells 2 and 4
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Baseline ConditionsBaseline Conditions
Average Annual Inflows; 160,334 ac-ft at Flow Weighted Mean TP Conc. Of 139 ppb Inflows Consider 50% TP Removal in S-
5A Basin Runoff due to BMPs
Average Annual Outflows; 188,100 ac-ft at Flow Weighted Mean TP Conc. Of 24 ppb, Geo. Mean of 24 ppb
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Model VerificationModel Verification
Fully Operational, Permits Comparison of Actual To Modeled Performance
Used Measured Data For Period Jan. 1, 2001 Through March 31, 2002
Measured Inflows at Structure G-302 (Almost All During 12-Month Period Ending March 31, 2002) 242,079 ac-ft, FW Mean TP Conc. Of 147 ppb
Measured Outflows at G-251 and G-310, Combined 270,165 ac-ft, FW Mean TP Conc. Of 37 ppb
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Model VerificationModel Verification
Applied “Existing Conditions” Model of STA-1W To Measured Inflows at G-302 Rainfall Evaporation
Considered Both SAV_C4 and NEWS In Cells 4 and 5B
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Measured Vs. Predicted Measured Vs. Predicted Outflow VolumesOutflow Volumes
0
20000
40000
60000
80000
100000
120000
140000
160000
Measured Cumulative Outflow (cfs-day)
DMSTA Predicted Cumulative Outflow (cfs-day) - G302
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Measured Vs. Predicted Measured Vs. Predicted Outflow TP LoadsOutflow TP Loads
0.00
2000.00
4000.00
6000.00
8000.00
10000.00
12000.00
14000.00
Measured Cumulative Load (kg)
DMSTA Predicted Cumulative Load (kg) - G302,SAV_C4
DMSTA Predicted Cumulative Load (kg) - G302, NEWS
SAV
NEWS
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Measured Vs. Predicted Measured Vs. Predicted Daily DischargesDaily Discharges
0
500
1000
1500
2000
2500
3000
3500
Measured Outflows (cfs)
DMSTA Predicted Outflows (cfs) - G302
De
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
ObservationsObservations
Model Closely Approximates Overall Discharge Volumes Suggests Seepage Inflows Modeled
Appropriately
Analysis Underscores Need for Replicating Cell 4 Performance Use of SAV-C4 Under Predicts Outflow
Concentrations By Approx. 20% Use of NEWS Over Predicts Outflow
Concentrations By Approx. 4%
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
ObservationsObservations
While Closely Approximating Overall Discharge Volumes, Not a Good Match to Measured Daily Discharges DMSTA Predicts Outflows on All 455 Days; Actual Only
171 (Inflow at G-302 on 208 Days) Peak Inflow At G-302 = 2,476 cfs; Peak Modeled Outflow
= 2,221 cfs; Peak Measured Outflow = 3,177 cfs Mean Daily Inflow Rate at G-302 = 587 cfs; Modeled
Mean Daily Outflow = 300 cfs; Measured Mean Daily Outflow = 796 cfs (All On Days With Measured Or Predicted Inflow > 0)
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
ObservationsObservations
Limited Use of G-251 Station Operated On 54 Of the 455 Days Maximum Daily Discharge of 195 cfs (450 cfs Capacity) Mean Daily Discharge (When Operating) Of 79 cfs Only 6% Of Modeled Inflow and Seepage to Cells 1 and
3 Discharged at G-310
Mean Daily Discharge From G-310 (When Operating) Was 840 cfs
Actual Flow Distribution To Cells Closely Approximated Model Assumptions
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
ConclusionsConclusions
Model Adequately Represents Hydrologic/Hydraulic Performance
Cell 5B Presently Performs More as NEWS Than SAV_C4; Suggests Need For Emphasis On Replicating SAV_C4 Performance
Some Improvement In Current Performance Might Be Realized With Modified Operations Could Recover Presently Ineffective Areas in
Cells 3 and 4 With Increased Use of G-251
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Alternative 1Alternative 1
Convert Cell 3 to SAV by 12/31/2006
Add Pumping Station for Maintenance of Stages in Cell 5 (Approx. 65 cfs) Pump WCA-1 Seepage
from Seepage Canal to Cell 5A
Maintenance of Stages in Cells 1-4 through Normal Operation of G-250S Source of water:
Seepage Canal Upstream, Direct Seepage to Cells 1,3
Legend:
Conversion to SAV
New Small Forward
Pumping StationP
Cell 1
Cell 5A
Cell 3
Cell 2
Cell 5B
Cell 4
A.R.M. LoxahatcheeNational WildlifeRefuge (WCA 1)
EffectiveCell Area (ac) 1 1,490 2 941
3 1,0264 3585A 5625B 2,293
Total 6,670 acN
G-259
G-258
G-305 A-V
G-304 A-J
G-254 A-I
G-327 A
G-306 A-J
G-255
G-256
G-257 L-7Canal
DischargeCanal
Ocean Canal
G-252 H-J
S-5AS
G-300
G-303
G-302
G-308
G-309
S-5A
G-251
G-310
G-253 A-J
G-250 S
G-301
P
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Alternative 2Alternative 2 Physical Works As For Alt. 1, Plus.. Convert 745 Acres of Cell 1 to SAV
New Transverse Levee and Control Structures Required
Control Structures Gated, Operable Structures
Convert 470 Acres of Cell 2 to SAV New Transverse Levee and
Control Structures Required Control Structures Simple Culverts
With Risers
Modify Flow Distribution Between Cells Replace G-255 With Operable
Structure
Extend Power to New Cell 1 Structures, G-255
All complete by 12/31/2006P
Legend:
Conversion to SAV New Control Structures
New Small Forward New Levee
Pumping Station
Cell 1
Cell 5A
Cell 3
Cell 2
Cell 5B
Cell 4
A.R.M. LoxahatcheeNational WildlifeRefuge (WCA 1)
EffectiveCell Area (ac) 1 745 2 471
3 1,4454 7205A 5625B 2,293
Total 6,670 acN
G-259
G-258
G-305 A-V
G-304 A-J
G-254 A-I
G-327 A
G-306 A-J
G-256
G-257 L-7Canal
DischargeCanal
Ocean Canal
G-252 H-J
S-5AS
G-300
G-303
G-302
G-308
G-309
S-5A
G-251
G-310
G-250 S
G-253 A-J
P
G-255
G-301
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
STA-1W STA-1W Summary of AlternativesSummary of Alternatives
* Computed Value Less than Calibration Range, Reported at Lowest Sustainable Concentration
Performance Measure: Unit Baseline Alt 1 Alt 2Anticipated Start Date Date N/A Jan 2004 Jan 2003Date of Completion Date N/A Dec 2006 Dec 2006Long-term Flow-weighted Mean ppb 24-30 19 - 27 14* - 22Long-term Geometric Mean ppb 24-26 14 - 16 10* - 13Phosphorus Load Reduction kg N/A 65,060 125,230Phosphorus Load Reduction % N/A 23.0 44.3Capital Cost (2002 Dollars) $ N/A $1,320,000 $6,100,000Inc. O&M Cost (2002 Dollars) $/Yr N/A $50,000 $165,00050-yr Present Worth Cost (12/31/02) $ N/A $2,232,000 $9,049,000Cost Effectiveness $/kg N/A $34 $72
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Sensitivity To SAV Sensitivity To SAV PerformancePerformance
TP Conc. For Different SAV Communities
F.W. Geo. F.W. Geo.STA-1W Inflows 139 -- 139 --STA-1W Outflows 24 24 30 26STA-1W Inflows 139 -- 139 --STA-1W Outflows 19 14 27 16STA-1W Inflows 139 -- 139 --STA-1W Outflows 14* 10* 22 13
Location SAV_C4 NEWS
Alternative 2
Baseline
Alternative 1
Condition
* Computed Value Less than Calibration Range, Reported at Lowest Sustainable Concentration
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Sensitivity To BMP Sensitivity To BMP PerformancePerformance
* Computed Value Less than Calibration Range, Reported at Lowest Sustainable Concentration
F.W. Geo. F.W. Geo. F.W. Geo.STA-1W Inflows 199 -- 139 -- 78 --STA-1W Outflows 30 31 24 24 18 17STA-1W Inflows 199 -- 139 -- 78 --STA-1W Outflows 23 17 19 14 14 10STA-1W Inflows 199 -- 139 -- 78 --STA-1W Outflows 15 11 14* 10* 14* 10*
Condition LocationTP Conc. For BMP Load Reduction in S-5A Basin of
25% 50% 75%
Baseline, Existing
Alternative1
Alternative 2
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
General SensitivityGeneral Sensitivity
* Computed Value Less than Calibration Range, Reported at Lowest Sustainable Concentration
TP Conc. For BMP Load Reduction in STA-1W10th Percentile Est. 50th Percentile Est. 90th Percentile Est.
F.W. Geo. Load F.W. Geo. Load F.W. Geo. LoadBaseline, Existing STA-1W Outflows 19 18 4,311 24 24 5,654 30 30 6,996
Alternative 1 STA-1W Outflows 14 10 3,293 19 14 4,352 23 17 5,412
Alternative 2 STA-1W Outflows 14* 10* 3,149* 14* 10* 3,149* 17 12 3,751
Condition Location
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
STA-1E STA-1E
Tributary Area Consists of C-51 West Basin Includes Rustic Ranches
Subdivision
Additional Inflows From S-5A Basin (Pumping
Station S-5A Discharges Exceeding Hydraulic Capacity of STA-1W)
Lake Okeechobee (Minor Quantities for STA Irrigation)
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
STA-1ESTA-1E
Present Design Approx. 5,132 Acres in Three Parallel Flow Paths (Cells 1-7)
Preceded by 1,046 Acres of Distribution Cells Considered As Add’l
Treatment Area With Poor Flow Characteristics
Emergent Macrophyte Marsh Current Design Basis
Under Construction, Scheduled Completion Late 2003, Early 2004
Legend:
Existing SAV Existing Spillway
Existing Pump Station Existing Control Structure
Existing Seepage
Pump Station
Cell 3
East Distribution Cell
A.R.M. LoxahatcheeNational WildlifeRefuge (WCA 1)
Cell 6 Cell 4N
Cell 4S
Cell 2
Cell 1Cell 5
West Distribution Cell
S-369
C-51 Canal
S-372
S-370
S-364
S-363S-366S-373
S-368
S-374 S-371 G-367
N
S-365
S-375
Cell 7
S-361
S-319
S-362
G-311
EffectiveArea (ac)Cell
1 5562 5523 5894N 6454S 752 5 5716 1,0497 418
Total 5,132 acDischarge Canal
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
STA-1ESTA-1E
Differs From Other STAs Due To: High Volume of
Seepage From WCA-1 (Less Than STA-1W, But More Than Other STAs)
Substantial Cell-to-Cell Seepage Flux - Used USACE Estimates
Distribution Cells
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Baseline ConditionsBaseline Conditions
Average Annual Inflows; 133,331 ac-ft at Flow Weighted Mean TP Conc. Of 176 ppb Inflows Consider 50% TP Removal in S-5A
Basin Runoff due to BMPs, 0% In C-51 West Basin
Average Annual Outflows; 148,400 ac-ft at Flow Weighted Mean TP Conc. Of 38 ppb, Geo. Mean of 34 ppb
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Alternative 1Alternative 1
Convert Cells 2, 4N, 4S and 6 to SAV by 12/31/06
Due to Available Gradient, Anticipate No Need For Forward Pumping Stations To Maintain Stages In SAV Cells
Legend:
Conversion to SAV
Cell 3
East Distribution Cell
A.R.M. LoxahatcheeNational WildlifeRefuge (WCA 1)
Cell 6 Cell 4N
Cell 4S
Cell 2
Cell 1Cell 5
West Distribution Cell
S-369
C-51 Canal
S-372
S-370
S-364
S-363S-366S-373
S-368
S-374 S-371 G-367
N
S-365
S-375
Cell 7
S-361
S-319
G-311
EffectiveArea (ac)Cell
1 5562 5523 5894N 6454S 752 5 5716 1,0497 418
Total 5,132 acDischarge Canal
S-362
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
ACME Basin BACME Basin B
Presently Discharges Directly to Refuge At Two Locations
Average Annual Discharges Of 31,499 ac-ft At Flow Weighted Mean TP Conc. Of 71 ppb 25% Reduction In TP Loading
Due To BMPs In Basin B Considered In Base Case Analysis
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Alternative 2Alternative 2
STA-1E Enhancements Identical To Those For Alternative 1 (SAV In Downstream Cells), 2006 Completion Discharges From Distribution
Cells Redistributed; Cell 3 Increased, Cells 5/7 Reduced by 0.03 Of Total
Acme Basin B Discharges Redirected To STA-1E, 2006 Completion Internal Improvements And
Modifications in Acme Basins A and B to Deliver Discharges To C-51 Canal Not Included In Estimated Costs
Would Require New Or Additional Pumps To Lift Additional Inflows To Distribution Cells; Capacity Assigned At 491 cfs
Legend:
Conversion to SAV
New Pumping StationPump
Cell 3
East Distribution Cell
A.R.M. LoxahatcheeNational WildlifeRefuge (WCA 1)
Cell 6 Cell 4N
Cell 4S
Cell 2
Cell 1Cell 5
West Distribution Cell
S-369
C-51 Canal
S-372
S-370
S-364
S-363S-366S-373
S-368
S-374 S-371 G-367
N
S-365
S-375
Cell 7
S-361
S-319
G-311
EffectiveArea (ac)Cell
1 5562 5523 5894N 6454S 752 5 5716 1,0497 418
Total 5,132 acDischarge Canal
PUMP
S-362
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
STA-1E STA-1E Summary of AlternativesSummary of Alternatives
* Computed Value Less than Calibration Range, Reported at Lowest Sustainable Concentration
Performance Measure: Unit Baseline Alt 1 Alt 2Anticipated Start Date Date N/A Jan 2005 Jan 2003Date of Completion Date N/A Dec 2006 Dec 2006Long-term Flow-weighted Mean ppb 38 15 - 24 15 - 24Long-term Geometric Mean ppb 34 10* - 11 10* - 11Phosphorus Load Reduction kg N/A 220,475 323,010Phosphorus Load Reduction % N/A 62.8 66.1Capital Cost (2002 Dollars) $ N/A $940,000 $8,520,000Inc. O&M Cost (2002 Dollars) $/Yr N/A $40,000 $285,00050-yr Present Worth Cost (12/31/02) $ N/A $1,678,000 $13,764,000Cost Effectiveness $/kg N/A $8 $43
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Sensitivity To SAV Sensitivity To SAV PerformancePerformance
* Computed Value Less than Calibration Range, Reported at Lowest Sustainable Concentration
TP Conc. For Different SAV Communities
F.W. Geo. F.W. Geo.STA-1E Inflows 176 -- 176 --STA-1E Outflows 15 10* 24 11STA-1E Inflows 156 -- 156 --STA-1E Outflows 15 10* 24 11
SAV_C4 NEWS
Alternative 1
Alternative 2 (with ACME)
Condition Location
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Sensitivity To BMP Sensitivity To BMP PerformancePerformance
* Computed Value Less than Calibration Range, Reported at Lowest Sustainable Concentration
#Alternative 2 only
F.W. Geo. F.W. Geo. F.W. Geo.STA-1E Inflows 187 -- 176 -- 127 --STA-1E Outflows 38 35 38 34 31 27STA-1E Inflows 187 -- 176 -- 127 --STA-1E Outflows 14* 10* 15 10* 14* 10*STA-1E Inflows 170 -- 156 -- 111 --STA-1E Outflows 15 10* 15 10* 14* 10*
Baseline, Existing
Alternative 1Alternative 2 (with ACME)
Condition Mid HighLocationTP Conc. For BMP Load Reduction
Low
Source Low Mid HighC-51 Basin 0% 0% 25%L-101/EAA WPB Basin 25% 50% 75%L.O. Water Supply 0% 0% 0%Rustic Ranch 0% 0% 25%ACME Basin B# 0% 25% 50%
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
General SensitivityGeneral Sensitivity
* Computed Value Less than Calibration Range, Reported at Lowest Sustainable Concentration
TP Conc. For BMP Load Reduction in STA-1E10th Percentile Est. 50th Percentile Est. 90th Percentile Est.
F.W. Geo. Load F.W. Geo. Load F.W. Geo. LoadBaseline, Existing STA-1E Outflows 29 25 5,349 38 34 7,026 47 42 8,703
Alternative 1 STA-1E Outflows 14* 10* 2,479* 15 10* 2,616 18 10* 3,231Alternative 2 (with ACME) STA-1E Outflows 14* 10* 3,034* 15 10* 3,310 19 10 4,085
Condition Location