Basin-Specific Feasibility Studies, ECP Basins Evaluation of Alternatives
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Transcript of Basin-Specific Feasibility Studies, ECP Basins Evaluation of Alternatives
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
STA 3/4 STA 3/4
Includes S-7/S-2 and S-8/S-3 Basins
Additional Inflows from C-139 Basin South Shore Drainage
District S-236 Basin Lake Okeechobee
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
STA-3/4STA-3/4
Present Design Approx. 16,543 Acres in 3 Parallel Flow Paths
Emergent Macrophyte Marsh Current Design Basis
Under Construction, Scheduled Completion Late 2003
Legend:
Existing SAV Existing Spillway
Existing Pump Station Existing Control Structure
Existing Seepage
Pump Station
G-380 A-F G-377 A-E G-374 A-F
G-381 A-F
G-376 A-F
G-375 A-F
G-379 A-E
G-378 A-E
G-383
G-382AG-382B
G-357
S-150
Inflow Canal
NNRCanal
Cell 1A
Cell 1B
Cell 2A
Cell 2B
Cell 3
Holey Land(Toe of the Boot)
WCA 3A
N
Supply Canal
L-5 Canal
Cell 3 Discharge Canal
Discharge Canal
Auxiliary SeepagePump Station
Borrow Pits
~10 miles
~8 miles
EffectiveCell Area (ac)1A 3,0391B 3,4882A 2,5422B 2,894 3 4,580
Total 16,543 ac
G-372
G-370
S-7
S-8
G-404
G-371
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Baseline ConditionsBaseline Conditions Current Design, Present Inflows Through 2014 Current Design, Inflows Modified To Reflect
Full CERP Implementation (EAA Storage Reservoirs, Phase 1 and 2) After 2014 Only Phase 1 Authorized by WRDA 2000 Not a CERP-sanctioned simulation, assumptions
made for the BSFS which may or may not coincide with the final conceptual design for the EAA Reservoirs
Inflow TP Loads Reflect 50% Reduction Due To BMPs In EAA
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Baseline 2015-2056Baseline 2015-2056
Hydrologic Data and inflow TP loads taken from District-furnished files
Outflows of long-term average flow-weighted mean TP concentrations estimated by method presented in Phosphorus Removal by Urban Runoff Detention Basins, W.W. Walker, Ph.D. Preliminary In Nature Subject to Review and Possible Substantial
Modification During Design of EAA Reservoirs
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Baseline 2015-2056Baseline 2015-2056
EAA Reservoir Modeled in 4 Components, 3 Hydraulically Linked to STA-3/4 A1 - Runoff from NNR
& Miami Canal Basins A2 - Overflows from
A1, & L.O.R.R. B - Overflows from
A2, and L.O.R.R.
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Baseline 2015-2056Baseline 2015-2056
Component A1 Reservoir Area
= 20,400 acres Average Inlet
Concentration = 95 ppb
Average Outlet Concentration = 65 ppb
Estimated Long-Term Average
Outflow Concentration, Compartment A1Mean Depth in Reservoir (m) (For wet period fraction) 1.168Approx. Basin Area (acres) 20,400Approx. Basin Area (sq.m.) 82,556,148
ESTIMATED TREATMENT IN RESERVOIR (Analyze as for reservoir per Walker 1987)Input Parameters Estimated TP Removal
Average Inlet Concentration mg/l 0.0947 q 2.406Average Annual Inflow Volume ac/ft 174,777 K 0.025Average Annual Inflow Volume cu.m. 215,586,000 P 117 ppbAverage Annual Rainfall m 1.287 N 1.422 Average Annual Evapotranspiration m 1.456 2.586Average TP Conc. In Rainfall (wet+dry) mg/l 0.026 R 0.442Infiltration from Groundwater m/yr 0.000 Pout 65 ppbWater Balance Adjustment & Exfiltration m/yr 0.016 Pout 0.0651 mg/lChange in Storage m./yr. 0.036 REF: Phosphorus Removal by Urban RunoffAve. TP Conc. In Seepage Inflows mg/l 0.000 Detention Basins;Lake and ReservoirWet Period Fraction 0.964 Management, Volume 3; North American
Lake Management Society; 1987SUMMARY OF RESULTS
Reservoir Area acres 20,400Ave. Annual Outflow Volume cu.m. 197,283,137Ave. Annual Outflow Volume ac-ft 159,939 Surface Discharges OnlyMean TP Conc. In Outflows mg/l 0.0651
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Baseline 2015-2056Baseline 2015-2056
Component A2 Reservoir Area
= 20,400 acres Average Inlet
Concentration = 72 ppb
Average Outlet Concentration = 59 ppb
Estimated Long-Term Average
Outflow Concentration, Compartment A2Mean Depth in Reservoir (m) (For wet period fraction) 0.983Approx. Basin Area (acres) 20,400Approx. Basin Area (sq.m.) 82,556,148
ESTIMATED TREATMENT IN RESERVOIR (Analyze as for reservoir per Walker 1987)Input Parameters Estimated TP Removal
Average Inlet Concentration mg/l 0.0721 q 1.823Average Annual Inflow Volume ac/ft 127,761 K 0.018Average Annual Inflow Volume cu.m. 157,592,272 P 94 ppbAverage Annual Rainfall m 1.287 N 0.920 Average Annual Evapotranspiration m 1.303 2.163Average TP Conc. In Rainfall (wet+dry) mg/l 0.026 R 0.368Infiltration from Groundwater m/yr 0.000 Pout 59 ppbWater Balance Adjustment & Exfiltration m/yr 0.200 Pout 0.0594 mg/lChange in Storage m./yr. 0.070 REF: Phosphorus Removal by Urban RunoffAve. TP Conc. In Seepage Inflows mg/l 0.000 Detention Basins;Lake and ReservoirWet Period Fraction 0.887 Management, Volume 3; North American
Lake Management Society; 1987SUMMARY OF RESULTS
Reservoir Area acres 20,400Ave. Annual Outflow Volume cu.m. 133,965,784Ave. Annual Outflow Volume ac-ft 108,607 Surface Discharges OnlyMean TP Conc. In Outflows mg/l 0.0594
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Baseline 2015-2056Baseline 2015-2056
Component B Reservoir Area
= 10,240 acres Average Inlet
Concentration = 71 ppb
Average Outlet Concentration = 59 ppb
Estimated Long-Term Average
Outflow Concentration, Compartment BMean Depth in Reservoir (m) (For wet period fraction) 0.682Approx. Basin Area (acres) 10,240Approx. Basin Area (sq.m.) 41,439,949
ESTIMATED TREATMENT IN RESERVOIR (Analyze as for reservoir per Walker 1987)Input Parameters Estimated TP Removal
Average Inlet Concentration mg/l 0.0707 q 4.824Average Annual Inflow Volume ac/ft 154,021 K 0.032Average Annual Inflow Volume cu.m. 189,983,513 P 74 ppbAverage Annual Rainfall m 1.303 N 0.333 Average Annual Evapotranspiration m 1.009 1.526Average TP Conc. In Rainfall (wet+dry) mg/l 0.0253 R 0.208Infiltration from Groundwater m/yr 0.000 Pout 59 ppbWater Balance Adjustment & Exfiltration m/yr 0.644 Pout 0.0586 mg/lChange in Storage m./yr. 0.055 REF: Phosphorus Removal by Urban RunoffAve. TP Conc. In Seepage Inflows mg/l 0.000 Detention Basins;Lake and ReservoirWet Period Fraction 0.703 Management, Volume 3; North American
Lake Management Society; 1987SUMMARY OF RESULTS
Reservoir Area acres 10,240Ave. Annual Outflow Volume cu.m. 173,206,550Ave. Annual Outflow Volume ac-ft 140,420 Surface Discharges OnlyMean TP Conc. In Outflows mg/l 0.0586
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
STA-3/4 BaselineSTA-3/4 Baseline
Average Annual Inflows 2007-2014; 660,889 ac-ft at Mean TP Conc. Of
88 ppb 2015-2056; 628,502 ac-ft at Mean TP Conc. Of
76 ppb
Average Annual Outflows 2007-2014; 623,700 ac-ft at FW Conc. Of 36
ppb, Geo. Mean Conc. Of 36 ppb 2015-2056; 588,100 ac-ft at FW Conc. Of 32
ppb, Geo. Mean Conc. Of 30 ppb
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Alternative 1Alternative 1
Current Design, Present Inflows Through 2014
STA-3/4 modified to optimize its performance--in place by 2014 Conversion of Cells 1B,
2B, & downstream Portion of Cell 3 from emergent to Submerged Aquatic Vegetation (SAV_C4)
Future (With CERP) Inflows 2015-2056Legend:
Conversion to SAV New Control Structures
New Small Forward New Levee
Pumping StationP
G-380 A-F G-377 A-E G-374 A-F
G-381 A-F
G-376 A-F
G-375 A-F
G-379 A-E
G-378 A-E
G-383
G-382AG-382B
G-357
S-150
Inflow Canal
NNRCanal
Cell 1A
Cell 1B
Cell 2A
Cell 2B
Cell 3A
Holey Land(Toe of the Boot)
WCA 3A
N
Supply Canal
L-5 Canal
Cell 3 Discharge Canal
Discharge Canal
Auxiliary SeepagePump Station
Borrow Pits
~10 miles
~8 miles
EffectiveCell Area (ac)1A 3,0391B 3,4882A 2,5422B 2,894 3A 3B
2,1532,427
Total 16,543 ac
G-372
G-370
S-7
S-8
G-404
G-371
Cell 3BP
PP
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Alt. 1 Physical WorksAlt. 1 Physical Works
3.3 Miles of Interior Levee Subdividing Cell 3 Includes Additional Water Control Structures Also Includes 3.6 Miles Additional Power Line
Forward Pumping Stations (3 total, capacities range from 24 to 54 cfs) Pump From Emergent Cells During Drought To
Maintain Stages in SAV Cells
Herbicide treatment of Cells 1B, 2B, and (new) 3B
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Alternative 2Alternative 2
STA-3/4 modified to optimize its performance--in place by 2006 Other Than Implementation Schedule,
Identical to Alternative 1
Existing Condition Inflows Through 2014
Future (With CERP) Inflows 2015-2056
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
STA-3/4 STA-3/4 Summary of AlternativesSummary of Alternatives
* Computed Value Less than Calibration Range, Reported at Lowest Sustainable Concentration
** 2015 - 2056
Performance Measure: Unit Baseline** Alt 1 Alt 2Anticipated Start Date Date N/A Jan 2011 Jan 2003Date of Completion Date N/A Dec 2013 Dec 2006Long-term Flow-weighted Mean ppb 32 14* - 21 14* - 21Long-term Geometric Mean ppb 30 10 - 15 10 - 15Phosphorus Load Reduction kg N/A 546,630 682,899Phosphorus Load Reduction % N/A 45.6 57.0Capital Cost (2002 Dollars) $ N/A $9,150,000 $9,150,000Inc. O&M Cost (2002 Dollars) $/Yr N/A $310,000 $310,00050-yr Present Worth Cost (12/31/02) $ N/A $11,107,000 $14,863,000Cost Effectiveness $/kg N/A $20 $22
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Basin-Specific Feasibility StudiesEverglades Construction Project Tributary Basins
Sensitivity To SAV Sensitivity To SAV PerformancePerformance
Condition Location TP Conc. For Different SAV Communities
F.W. Geo. F.W. Geo.STA-3/4 Inflows 76 -- 76 --STA-3/4 Outflows 14* 10 21 15STA-3/4 Inflows 88 -- 88 --STA-3/4 Outflows 14 10 21 14
Alternative 1 (Post-CERP)Alternative 2 (Pre-CERP)
SAV_C4 NEWS
* 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
Condition Location TP Conc. For BMP Load Reduction in S-7 & S-8 Basins of
F.W. Geo. F.W. Geo. F.W. Geo.STA-3/4 Inflows 118 -- 88 -- 59 --STA-3/4 Outflows 46 46 36 36 26 26STA-3/4 Inflows 91 -- 76 -- 60 --STA-3/4 Outflows 37 35 32 30 27 25STA-3/4 Inflows 91 -- 76 -- 60 --STA-3/4 Outflows 15 11 14* 10 14* 10*STA-3/4 Inflows 118 -- 88 -- 59 --STA-3/4 Outflows 17 12 14 10 14* 10*
Alternative 2 (Pre-CERP)
25% 50% 75%
Baseline, ExistingBaseline, FutureAlternative 1 (Post-CERP)
* 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
General SensitivityGeneral Sensitivity
* Computed Value Less than Calibration Range, Reported at Lowest Sustainable Concentration
Condition Location TP Conc. In DMSTA Sensitivity Analyses10th Percentile Est. 50th Percentile Est. 90th Percentile Est.
F.W. Geo. Load F.W. Geo. Load F.W. Geo. LoadBaseline, Existing STA-3/4 Outflows 28 27 21,618 36 36 28,014 45 44 34,409Baseline, Future STA-3/4 Outflows 25 23 17,898 32 30 23,193 39 38 28,485Alternative 1 (Post-CERP) STA-3/4 Outflows 14* 10* 10,178* 14* 10 10,178* 17 12 12,420Alternative 2 (Pre-CERP) STA-3/4 Outflows 14* 10* 10,178* 14 10 10,980 18 12 13,503