note: this is only part 5 of 5 of this report (appendices a and b). … · 2008-01-30 · note:...
TRANSCRIPT
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Contents
Executive Summary
Section 1 Introduction 1.1 Background ...............................................................................................................1-1 1.2 Study Area .................................................................................................................1-1 1.3 Project Objective .......................................................................................................1-1 1.3.1 Data Collection and Review......................................................................1-1 1.3.2 Stormwater System Inventory and Mapping .........................................1-1 1.3.3 Problem Area Identification and Conceptual Improvements ..............1-1 1.3.4 Water Quality Analyses.............................................................................1-2 1.3.5 Floodplain Review......................................................................................1-2 1.3.6 Alternative Development ..........................................................................1-2 1.3.7 Stormwater Needs Prioritization..............................................................1-2
1.3.8 Capital Improvement Project Recommendation....................................1-3 1.3.9 Stormwater Ordinance Review ................................................................1-3
Section 2 Existing Data Review and Evaluation for Flood Study 2.1 Introduction...............................................................................................................2-1 2.2 Hydrologic Data .......................................................................................................2-1 2.2.1 Rainfall .........................................................................................................2-1 2.2.2 St. Johns River Stages and Flow at Astor ................................................2-2 2.3 Topographic Data .....................................................................................................2-3 2.4 Soils.............................................................................................................................2-3 2.5 Land Use ....................................................................................................................2-4 2.6 Plans Review .............................................................................................................2-4 2.6.1 Subdivision and Roadway Plans...............................................................2-4 2.6.2 Building Permits ..........................................................................................2-4 2.6.3 Environmental Resource Permits..............................................................2-4 2.7 Floodplain Review....................................................................................................2-5 2.8 Stormwater System Inventory and Mapping .......................................................2-7 2.8.1 Description of Existing Drainage System................................................2-7 2.8.2 Open Channels and Swales.......................................................................2-8 2.8.3 Culverts ........................................................................................................2-8 2.8.4 Ponds ............................................................................................................2-9 2.8.5 Streets ...........................................................................................................2-9
Section 3 Identified Problems and Conceptual Improvements 3.1 Introduction...............................................................................................................3-1 3.2 Classification of Problem Areas..............................................................................3-1 3.3 Flooding Due to High Stages in the St. Johns River ............................................3-3
Table of Contents Lake County Astor Flood Study
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3.4 Localized Flooding ...................................................................................................3-4 3.5 Stormwater Infrastructure Damage .......................................................................3-4 3.6 Poor Conditions in the Finger Canals....................................................................3-5 3.7 Specific Problem Areas and Conceptual Improvements ....................................3-6 3.7.1 Problem Area No.1 – Bass, Indigo and Tyty Roads .............................3-6 3.7.1.1 Bass and Indigo Roads (11P1 & 10R) ....................................3-6 3.7.7.2 Tyty Road (7P2)........................................................................3-7 3.7.2 Problem Area No. 2 – Ward Street, West Lloyd Street and Alco Road ...........................................................................................................3-7 3.7.2.1 Ward Street (36P1, 37P1, 38P1, 39P1, 40P1 and 5P2)...........3-7 3.7.2.2 West Lloyd Street and Alco Road (41P1)..............................3-8 3.7.3 Problem Area No. 3 – James Street (19P1), Lisa Street (20P1) and Trespass Trail (27P1) .................................................................................3-9 3.7.4 Problem Area No. 4 – 3rd Street (26P1 and 31P1) ................................3-15 3.7.5 Problem Area No. 5 – Butler and Ann Streets.....................................3-17 3.7.5.1 Butler Street (1P2) ..................................................................3-17 3.7.5.2 Ann Street (11R) .....................................................................3-17 3.7.6 Problem Areas No. 6,7,8,9 and 10 .........................................................3-18 3.7.6.1 Problem Area No. 6 – Maple Road (32P1)..........................3-18 3.7.6.2 Problem Area No. 7 – Fox Road (10P2)...............................3-18 3.7.6.3 Problem Area No. 8 – Carrol Street (30P1) .........................3-18 3.7.6.4 Problem Area No. 9 – Veterans Drive (21P1).....................3-18 3.7.6.5 Problem Area No. 10 – Alco Road (1P1).............................3-18 3.8 Summary of Alternatives for Localized Flooding..............................................3-19 3.9 Flood Early Warning System ................................................................................3-19
Section 4 Water Quality and Pollutant Load Analysis 4.1 Introduction...............................................................................................................4-1 4.2 Water Quality............................................................................................................4-1 4.3 Pollutant Load Analysis ..........................................................................................4-1 4.3.1 Watershed Management Model (WMM) Background ........................4-2 4.3.1.1 Basins and Pollution Sources .................................................4-3 4.3.1.2 Rainfall/Runoff Relationships ...............................................4-3 4.3.1.3 Nonpoint Pollution Event Mean Concentrations................4-4 4.3.1.4 Nonpoint Pollution Loading Factors.....................................4-7 4.3.1.5 Failing Septic Tank Impacts....................................................4-9 4.3.1.6 Point Source Loadings...........................................................4-10 4.3.1.7 Model Limitations..................................................................4-11 4.4 WMM Data Analysis..............................................................................................4-11 4.4.1 Land Use ..................................................................................................4-11 4.4.2 BMP Identification and Pollution Removal Efficiencies ....................4-12 4.4.3 Event Mean Concentration Values .......................................................4-13
Table of Contents Lake County Astor Flood Study
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4.4.4 Rainfall Data.............................................................................................4-15 4.4.5 Septic Tank Usage ...................................................................................4-15 4.4.6 Point Source Discharges .........................................................................4-15 4.5 WMM Results..........................................................................................................4-15 4.5.1 Existing Land Use Condition Results...................................................4-16 4.5.2 Recommendations...................................................................................4-16 4.6 Conceptual Improvements to Address Water Quality .....................................4-17 4.6.1 Problem Area No. 11 – Fern, Bobcat, Palmetto and Deer Roads (9P2)...............................................................................................4-17 4.6.2 Problem Area No. 12 – Aqua Utilities Pond (8P2)..............................4-19 4.6.3 Problem Area No. 13 – Riverview Drive Pond (33P) .........................4-19 4.6.4 Finger Canals – Various Locations (8P1, 9P1, 2P2, 3P2, 4P2, 6P2, 8P2 and 2R .......................................................................................................4-20
Section 5 Problem Ranking and Prioritization 5.1 Introduction...............................................................................................................5-1 5.2 Estimated Alternative Costs....................................................................................5-1 5.3 Development of Ranking Criteria ..........................................................................5-2 5.4 Problem Area Ranking and Preliminary Capital Projects List...........................5-4 5.5 Stormwater Management Needs............................................................................5-4 5.6 Stormwater Management Needs Ranking............................................................5-6
Section 6 Stormwater Ordinance Review 6.1 Introduction...............................................................................................................6-1 6.2 Stormwater Management Performance Criteria ..................................................6-1 6.3 Water Quality Standards .........................................................................................6-2 6.4 Development in Special Flood Hazard Areas ......................................................6-3 6.5 Redevelopment Control Measures.........................................................................6-6 6.6 Stormwater System Maintenance...........................................................................6-7 6.7 Applicability to Astor...............................................................................................6-8
Section 7 Summary of Recommendations 7.1 Introduction...............................................................................................................7-1 7.2 Plan Implementation Guidelines............................................................................7-1
Appendices Appendix A Infrastructure Damage Appendix B Opinion of Probable Construction Cost
Appendix A
Damage D01Description - Cross drain pipe broken
Damage D02Description - Cross drain pipe broken
Damage D03Description - Washout next to the mitered end section
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Appendix A-1Infrastructure Damage
D01, D02 & D03Astor Flood Study
D01
D02
D03
Damage D04Hole/washout at top of the mitered end section
Damage D05Hole/washout at side of the mitered end section
Damage D06Concrete on mitered end section broken and pulling away from culvert pipe
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Appendix A-2Infrastructure Damage
D04, D05 & D06Astor Flood Study
D04
D05
D06
Damage D07RCP pipe is exposed
Damage D08CMP pipe is exposed at the mitered end section
Damage D09Washing out around the mitered end section
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Appendix A-3Infrastructure Damage
D07, D08 & D09Astor Flood Study
D07
D08
D09
Damage D10Washout at the mitered end section
Damage D11Pipe bent and pulling away from the mitered end section
Damage D12Washout at the headwall
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Appendix A-4Infrastructure Damage
D10, D11 & D12Astor Flood Study
D10
D11
D12
Damage D13Deep washout between River Road and ditch
Damage D14Pipe exposed and broken in dirt roadway
Damage D15Deep washout at the corner of Fern Road and River Rd
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Appendix A-5Infrastructure Damage
D13, D14 & D15Astor Flood Study
D13
D14
D15
Damage D16Washout, pipe torn & concrete broken
Damage D17Severe washout & pipe damage
Damage D18RCP pipe exposed
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Appendix A-6Infrastructure Damage
D16, D17 & D18Astor Flood Study
D16
D17
D18
Damage D19Washout causing collapse of the mitered end section
Damage D23Driveway culvert crushed in center
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Appendix A-7Infrastructure Damage
D19 & D23Astor Flood Study
D19
D23
Damage D21Severe washout undermining roadway
Damage D22Severe washout undermining roadway
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Appendix A-8Infrastructure Damage
D21 & D22Astor Flood Study
D21
D22
Damage D24Washout under flume
Damage D25Severe washout under flume
Damage D26Bank washed away & canal filled with sediment
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Appendix A-9Infrastructure Damage
D24, D25 & D26Astor Flood Study
D24
D25
D26
Damage D27Washout beside the mited end section causing damage to structure
Damage D28Washout beside road exposing drainage pipe
Damage D29Road washing out into ditch
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Appendix A-10Infrastructure Damage
D27, D28 & D29Astor Flood Study
D27
D28
D29
Damage D30Road washed out badly
Damage D34Severe washout - road could be washed out
Damage D35This area is lower than the surrounding area is flooded badly when raining
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Appendix A-11Infrastructure Damage
D30, D34 & D35Astor Flood Study
D30
D34
D35
Damage D31Washout at top of the mitered end section, which could cause mitered end section to crack
Damage D32Severe washout at the edge of road, which could cause road to collapse
Damage D33Severe washout at the edge of riprap, which could cause riprap to collapse
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Appendix A-12Infrastructure Damage
D31, D32 & D33Astor Flood Study
D31
D32
D33
Appendix B
Site DemolitionDemolish Concrete Driveways 55.56 CY $6,496 $3,479 $5,784 15,759$
Remove Existing Driveway Culverts 600 LF $3,408 $750 $8,376 $3,717 16,251$ Earthwork -$
Regrade Swale 2205 CY $7,662 $20,303 27,965$ Construct 1 acre Pond (with 835' of Berm, 20' W x 10'H) 9254 CY $88,401 $141,660 230,061$
Drainage & Containment -$ Driveway Culverts 30 EA $31,512 $27,693 $6,396 65,601$
End Structures 60 EA $6,300 $12,000 18,300$ Overflow Weir at Pond Outlet 1 EA $749 $2,380 $7 $1,907 5,043$
Site Improvements & Amenities -$ Sod @ Swale 52000 SF $30,680 30,680$
Sod @ Pond Slopes & Berm 28000 SF $16,520 16,520$ Concrete -$
Repave Concrete Driveways 55.56 CY $19,765 $15,634 $605 $830 $130 36,964$ Subtotal= 463,144$
Subtotal 1 (Nearest $1,000) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 463,000$
Indirect CostsSales tax (Material, Equipment, Other) (7%) $17,193
Builders Risk Insurance (1.5% total cost) $12,930General Liability Insurance (1% total cost) $8,620
General Construction Bonds (1.5 % total cost) $12,930Indirect Cost Subtotal 51,673$
Subtotal 2 (Nearest $1,000) 515,000$ Overhead and Profit
General Contractor Field General Conditions (7% of Subtotal 2) $36,050General Contractor Indirects, OH & Profit (10% of Subtotal 2) $51,500
Overhead & Profit Subtotal 87,550$
Subtotal 3 (Nearest $1,000) 603,000$ Contingency
Construction Contingency (35% of Subtotal 3) $211,050Contingency Subtotal 211,050$
Subtotal 4 (Nearest $1,000) 814,000$ Engineering Services
Engineering, Design & Permitting (30% of Subtotal 4) $244,200Engineering Subtotal 244,200$
EscalationEscalation to Mid Point Constr (6% (of Subtotal 4) per year) $48,840
Escalation Subtotal 48,840$
TOTAL COST 1,106,000$
NOTE:
Table B-1Opinion of Probable Construction CostProblem Area 1Astor Flood Study
ItemLabor
AmountMaterial Amount
Estimated Total Cost
Estimated Quantity Units
Subcontractor Amount
Equipment Amount
Other Amount
4. Cost does not include any potential hazardous material remediation or utilities adjustments cost.
1. The above probable construction cost does not include R/W acquisition, land acquisition or wetland mitigation cost.2. Construction cost is based on data from a customized database that is oriented toward the specific type of project designed and executed by CDM. The database, compiled from years of project-specific cost quotations and contractor schedules of values, contains information on process and specialty equipment, engineered materials, and labor and productivity factors in Construction Specifications Institute Inc. (CSI) format for environmental and infrastructure projects3. Excavation cost (CY) may vary significantly if the excavated material can not be used as common fill and may need to be disposed of by the contractor.
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Site Demolition
Demolish Concrete Driveways 18.52 CY $2,165 $1,160 $1,928 5,253$
Remove Existing Driveway Culverts 200 LF $1,138 $250 $2,855 $1,243 5,486$
Earthwork -$
Regrade Swale 530 CY $2,120 $5,944 8,064$
Construct 6 acre Pond (with 2000' of Berm, 20'W x 10'H) 75366 CY $568,483 $996,059 1,564,542$
Drainage & Containment -$
Driveway Culverts 10 EA $10,504 $9,231 $2,132 21,867$
End Structures 20 EA $2,100 $4,000 6,100$
Overflow Weir at Pond Outlet 1 EA $749 $2,380 $7 $1,907 5,043$
Site Improvements & Amenities -$
Sod @ Swale 14000 SF $8,260 8,260$
Sod @ Pond Slopes & Berm 73000 SF $43,070 43,070$
Concrete -$
Repave Concrete Driveways 18.52 CY $6,589 $5,212 $202 $277 $43 12,323$
Subtotal= 1,680,008$
Subtotal 1 (Nearest $1,000) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1,680,000$
Indirect Costs
Sales tax (Material, Equipment, Other) (7%) $62,348
Builders Risk Insurance (1.5% total cost) $46,890
General Liability Insurance (1% total cost) $31,260
General Construction Bonds (1.5 % total cost) $46,890
Indirect Cost Subtotal 187,388$
Subtotal 2 (Nearest $1,000) 1,867,000$
Overhead and Profit
General Contractor Field General Conditions (7% of Subtotal 2) $130,690
General Contractor Indirects, OH & Profit (10% of Subtotal 2) $186,700
Overhead & Profit Subtotal 317,390$
Subtotal 3 (Nearest $1,000) 2,184,000$
Contingency
Construction Contingency (35% of Subtotal 3) $764,400
Contingency Subtotal 764,400$
Subtotal 4 (Nearest $1,000) 2,948,000$
Engineering Services
Engineering, Design & Permitting (30% of Subtotal 4) $884,400
Engineering Subtotal 884,400$
Escalation
Escalation to Mid Point Constr (6% per year) $176,880
Escalation Subtotal 176,880$
TOTAL COST 4,010,000$
NOTE:
4. Cost does not include any potential hazardous material remediation or utilities adjustments cost.
1. The above probable construction cost does not include R/W acquisition, land acquisition or wetland mitigation cost.
2. Construction cost is based on data from a customized database that is oriented toward the specific type of project designed and executed by CDM. The database, compiled from years of project-specific cost quotations and contractor schedules of values, contains information on process and specialty equipment, engineered materials, and labor and productivity factors in Construction Specifications Institute Inc. (CSI) format for environmental and infrastructure projects
3. Excavation cost (CY) may vary significantly if the excavated material can not be used as common fill and may need to be disposed of by the contractor.
ItemLabor
AmountMaterial Amount
Estimated Total Cost
Estimated Quantity Units
Subcontractor Amount
Equipment Amount
Other Amount
Table B-2Opinion of Probable Construction CostProblem Area 2Astor Flood Study
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Site Demolition
Demolish Concrete Driveways 63.33 CY $7,365 $3,966 $6,560 17,891$
Remove Existing Driveway Culverts 680 LF $3,864 $850 $9,518 $4,214 18,446$
Remove RCP Cross Drain 39 LF $222 $49 $571 $243 1,085$
Remove CMPCross Drain 42 LF $272 $53 $26 $321 672$
Earthwork -$
Regrade Swale 1125 CY $4,089 $11,045 15,134$
Excavation for Baffle Box 70 CY $625 $186 $93 $729 1,633$
Drainage & Containment -$
Driveway Culverts 680 LF $35,744 $31,390 $7,291 74,425$
End Structures 68 EA $7,140 $13,600 20,740$
36" RCP 175 LF $10,351 $11,157 $0 $4,209 25,717$
Site Improvements & Amenities -$
Sod @ Swale 26520 SF $15,647 15,647$
Concrete -$
Repave Concrete Driveways 63.33 CY $22,532 $17,823 $690 $946 $148 42,139$
Baffle Box (10.80'W x 32.30'L x 7.50' H) 43.32 CY $20,215 $16,241 $602 $936 $101 38,095$
Subtotal= 271,624$
Subtotal 1 (Nearest $1,000) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 272,000$
Indirect Costs
Sales tax (Material, Equipment, Other) (7%) $10,092
Builders Risk Insurance (1.5% total cost) $7,590
General Liability Insurance (1% total cost) $5,060
General Construction Bonds (1.5 % total cost) $7,590
Indirect Cost Subtotal 30,332$
Subtotal 2 (Nearest $1,000) 302,000$
Overhead and Profit
General Contractor Field General Conditions (7% of Subtotal 2) $21,140
General Contractor Indirects, OH & Profit (10% of Subtotal 2) $30,200
Overhead & Profit Subtotal 51,340$
Subtotal 3 (Nearest $1,000) 353,000$
Contingency
Construction Contingency (35% of Subtotal 3) $123,550
Contingency Subtotal 123,550$
Subtotal 4 (Nearest $1,000) 477,000$
Engineering Services
Engineering, Design & Permitting (30% of Subtotal 4) $143,100
Engineering Subtotal 143,100$
Escalation
Escalation to Mid Point Constr (6% per year) $28,620
Escalation Subtotal 28,620$
TOTAL COST 649,000$
NOTE:
Table B-3Opinion of Probable Construction CostProblem Area 3Astor Flood Study
ItemLabor
AmountMaterial Amount
Estimated Total Cost
Estimated Quantity Units
Subcontractor Amount
Equipment Amount
Other Amount
4. Cost does not include any potential hazardous material remediation or utilities adjustments cost.
1. The above probable construction cost does not include R/W acquisition, land acquisition or wetland mitigation cost.2. Construction cost is based on data from a customized database that is oriented toward the specific type of project designed and executed by CDM. The database, compiled from years of project-specific cost quotations and contractor schedules of values, contains information on process and specialty equipment, engineered materials, and labor and productivity factors in Construction Specifications Institute Inc. (CSI) format for environmental and infrastructure projects
3. Excavation cost (CY) may vary significantly if the excavated material can not be used as common fill and may need to be disposed of by the contractor.
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Site Demolition
Demolish RCP Cross Drain 102 LF $871 $735 $1,049 2,655$
Earthwork -$
Excavation for Baffle Box 3371 CY $17,593 $2,238 $1,119 $21,422 42,372$
Drainage & Containment -$
RCP Culvert Box (48"x84") 34 LF $2,843 $13,953 $87 $5,551 22,434$
Concrete -$
Baffle Box (39'W x 117'L x 27.20' H) 568 CY $226,570 $180,383 $7,894 $10,678 $1,329 426,854$
Subtotal= 494,315$
Subtotal 1 (Nearest $1,000) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 494,000$
Indirect Costs
Sales tax (Material, Equipment, Other) (7%) $18,329
Builders Risk Insurance (1.5% total cost) $13,785
General Liability Insurance (1% total cost) $9,190
General Construction Bonds (1.5 % total cost) $13,785
Indirect Cost Subtotal 55,089$
Subtotal 2 (Nearest $1,000) 549,000$
Overhead and Profit
General Contractor Field General Conditions (7% of Subtotal 2) $38,430
General Contractor Indirects, OH & Profit (10% of Subtotal 2) $54,900
Overhead & Profit Subtotal 93,330$
Subtotal 3 (Nearest $1,000) 642,000$
Contingency
Construction Contingency (35% of Subtotal 3) $224,700
Contingency Subtotal 224,700$
Subtotal 4 (Nearest $1,000) 867,000$
Engineering Services
Engineering, Design & Permitting (30% of Subtotal 4) $260,100
Engineering Subtotal 260,100$
Escalation
Escalation to Mid Point Constr (6% per year) $52,020
Escalation Subtotal 52,020$
TOTAL COST 1,179,000$ 1179120
NOTE:
4. Cost does not include any potential hazardous material remediation or utilities adjustments cost.
1. The above probable construction cost does not include R/W acquisition, land acquisition or wetland mitigation cost.2. Construction cost is based on data from a customized database that is oriented toward the specific type of project designed and executed by CDM. The database, compiled from years of project-specific cost quotations and contractor schedules of values, contains information on process and specialty equipment, engineered materials, and labor and productivity factors in Construction Specifications Institute Inc. (CSI) format for environmental and infrastructure projects
3. Excavation cost (CY) may vary significantly if the excavated material can not be used as common fill and may need to be disposed of by the contractor.
ItemLabor
AmountMaterial Amount
Estimated Total Cost
Estimated Quantity Units
Subcontractor Amount
Equipment Amount
Other Amount
Table B-4Opinion of Probable Construction CostProblem Area 4Astor Flood Study
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Site Demolition
18" RCP Culvert 110 LF $4,751 $2,992 $631 8,374$
Drainage & Containment -$
18" Flap Gate 1 LS $1,717 $10,027 $26 11,770$
Subtotal= 20,144$
Subtotal 1 (Nearest $1,000) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20,000$
Indirect Costs
Sales tax (Material, Equipment, Other) (7%) $738
Builders Risk Insurance (1.5% total cost) $555
General Liability Insurance (1% total cost) $370
General Construction Bonds (1.5 % total cost) $555
Indirect Cost Subtotal 2,218$
Subtotal 2 (Nearest $1,000) 22,000$
Overhead and Profit
General Contractor Field General Conditions (7% of Subtotal 2) $1,540
General Contractor Indirects, OH & Profit (10% of Subtotal 2) $2,200
Overhead & Profit Subtotal 3,740$
Subtotal 3 (Nearest $1,000) 26,000$
Contingency
Construction Contingency (35% of Subtotal 3) $9,100
Contingency Subtotal 9,100$
Subtotal 4 (Nearest $1,000) 35,000$
Engineering Services
Engineering, Design & Permitting (30% of Subtotal 4) $10,500
Engineering Subtotal 10,500$
Escalation
Escalation to Mid Point Constr (6% per year) $2,100
Escalation Subtotal 2,100$
TOTAL COST 48,000$
NOTE:
Table B-5Opinion of Probable Construction CostProblem Area 6Astor Flood Study
ItemLabor
AmountMaterial Amount
Estimated Total Cost
Estimated Quantity Units
Subcontractor Amount
Equipment Amount
Other Amount
4. Cost does not include any potential hazardous material remediation or utilities adjustments cost.
1. The above probable construction cost does not include R/W acquisition, land acquisition or wetland mitigation cost.2. Construction cost is based on data from a customized database that is oriented toward the specific type of project designed and executed by CDM. The database, compiled from years of project-specific cost quotations and contractor schedules of values, contains information on process and specialty equipment, engineered materials, and labor and productivity factors in Construction Specifications Institute Inc. (CSI) format for environmental and infrastructure projects
3. Excavation cost (CY) may vary significantly if the excavated material can not be used as common fill and may need to be disposed of by the contractor.
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Earthwork -$
Swale 40 CY $504 $1,755 2,259$
Site Improvements & Amenities -$
Sod @ Swale 1000 SF $590 590$
Subtotal= 2,849$
Subtotal 1 (Nearest $1,000) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3,000$
Indirect Costs
Sales tax (Material, Equipment, Other) (7%) $120
Builders Risk Insurance (1.5% total cost) $90
General Liability Insurance (1% total cost) $60
General Construction Bonds (1.5 % total cost) $90
Indirect Cost Subtotal 360$
Subtotal 2 (Nearest $1,000) 3,000$
Overhead and Profit
General Contractor Field General Conditions (7% of Subtotal 2) $210
General Contractor Indirects, OH & Profit (10% of Subtotal 2) $300
Overhead & Profit Subtotal 510$
Subtotal 3 (Nearest $1,000) 4,000$
Contingency
Construction Contingency (35% of Subtotal 3) $1,400
Contingency Subtotal 1,400$
Subtotal 4 (Nearest $1,000) 5,000$
Engineering Services
Engineering, Design & Permitting (30% of Subtotal 4) $1,500
Engineering Subtotal 1,500$
Escalation
Escalation to Mid Point Constr (6% per year) $300
Escalation Subtotal 300$
TOTAL COST 7,000$
NOTE:
4. Cost does not include any potential hazardous material remediation or utilities adjustments cost.
1. The above probable construction cost does not include R/W acquisition, land acquisition or wetland mitigation cost.
2. Construction cost is based on data from a customized database that is oriented toward the specific type of project designed and executed by CDM. The database, compiled from years of project-specific cost quotations and contractor schedules of values, contains information on process and specialty equipment, engineered materials, and labor and productivity factors in Construction Specifications Institute Inc. (CSI) format for environmental and infrastructure projects.
3. Excavation cost (CY) may vary significantly if the excavated material can not be used as common fill and may need to be disposed of by the contractor.
ItemLabor
AmountMaterial Amount
Estimated Total Cost
Estimated Quantity Units
Subcontractor Amount
Equipment Amount
Other Amount
Table B-6Opinion of Probable Construction CostProblem Area 8Astor Flood Study
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Drainage & Containment
15" RCP Culverts 120 LF $4,829 $3,139 $488 8,456$
End Structures 6 EA $630 $1,200 1,830$
Control Structure at Pond Outlet 1 EA $749 $2,380 $7 $1,907 5,043$
Subtotal= 15,329$
Subtotal 1 (Nearest $1,000) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15,000$
Indirect Costs
Sales tax (Material, Equipment, Other) (7%) $558
Builders Risk Insurance (1.5% total cost) $420
General Liability Insurance (1% total cost) $280
General Construction Bonds (1.5 % total cost) $420
Indirect Cost Subtotal 1,678$
Subtotal 2 (Nearest $1,000) 17,000$
Overhead and Profit
General Contractor Field General Conditions (7% of Subtotal 2) $1,190
General Contractor Indirects, OH & Profit (10% of Subtotal 2) $1,700
Overhead & Profit Subtotal 2,890$
Subtotal 3 (Nearest $1,000) 20,000$
Contingency
Construction Contingency (35% of Subtotal 3) $7,000
Contingency Subtotal 7,000$
Subtotal 4 (Nearest $1,000) 27,000$
Engineering Services
Engineering, Design & Permitting (30% of Subtotal 4) $8,100
Engineering Subtotal 8,100$
Escalation
Escalation to Mid Point Constr (6% per year) $1,620
Escalation Subtotal 1,620$
TOTAL COST 37,000$
NOTE:
4. Cost does not include any potential hazardous material remediation or utilities adjustments cost.
1. The above probable construction cost does not include R/W acquisition, land acquisition or wetland mitigation cost.
2. Construction cost is based on data from a customized database that is oriented toward the specific type of project designed and executed by CDM. The database, compiled from years of project-specific cost quotations and contractor schedules of values, contains information on process and specialty equipment, engineered materials, and labor and productivity factors in Construction Specifications Institute Inc. (CSI) format for environmental and infrastructure projects.
3. Excavation cost (CY) may vary significantly if the excavated material can not be used as common fill and may need to be disposed of by the contractor.
ItemLabor
AmountMaterial Amount
Estimated Total Cost
Estimated Quantity Units
Subcontractor Amount
Equipment Amount
Other Amount
Table B-7Opinion of Probable Construction CostProblem Area 11Astor Flood Study
A
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Earthwork -$
Regrade Swale 813 CY $3,079 $8,409 11,488$
Drainage & Containment -$
End Structures 50 EA $5,255 $10,000 15,255$
Manholes 4 EA $3,298 $12,697 $60 $2,569 $378 19,002$
Control Structure 1 EA $749 $2,380 $7 $1,907 5,043$
Inlets 2 EA $1,500 $12,496 $23 $3,803 17,822$
15" RCP Culverts 28 EA $54,862 $33,817 $5,691 94,370$
18" RCP Culverts 370 LF $14,739 $7,827 $2,123 24,689$
Site Improvements & Amenities -$
Sod @ Swale 20000 SF $11,800 11,800$
Subtotal= 199,469$
Subtotal 1 (Nearest $1,000) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 199,000$
Indirect Costs
Sales tax (Material, Equipment, Other) (7%) $7,380
Builders Risk Insurance (1.5% total cost) $5,550
General Liability Insurance (1% total cost) $3,700
General Construction Bonds (1.5 % total cost) $5,550
Indirect Cost Subtotal 22,180$
Subtotal 2 (Nearest $1,000) 221,000$
Overhead and Profit
General Contractor Field General Conditions (7% of Subtotal 2) $15,470
General Contractor Indirects, OH & Profit (10% of Subtotal 2) $22,100
Overhead & Profit Subtotal 37,570$
Subtotal 3 (Nearest $1,000) 259,000$
Contingency
Construction Contingency (35% of Subtotal 3) $90,650
Contingency Subtotal 90,650$
Subtotal 4 (Nearest $1,000) 350,000$
Engineering Services
Engineering, Design & Permitting (30% of Subtotal 4) $105,000
Engineering Subtotal 105,000$
Escalation
Escalation to Mid Point Constr (6% per year) $21,000
Escalation Subtotal 21,000$
TOTAL COST 475,000$
NOTE:
4. Cost does not include any potential hazardous material remediation or utilities adjustments cost.
1. The above probable construction cost does not include R/W acquisition, land acquisition or wetland mitigation cost.
2. Construction cost is based on data from a customized database that is oriented toward the specific type of project designed and executed by CDM. The database, compiled from years of project-specific cost quotations and contractor schedules of values, contains information on process and specialty equipment, engineered materials, and labor and productivity factors in Construction Specifications Institute Inc. (CSI) format for environmental and infrastructure projects.
3. Excavation cost (CY) may vary significantly if the excavated material can not be used as common fill and may need to be disposed of by the contractor.
ItemLabor
AmountMaterial Amount
Estimated Total Cost
Estimated Quantity Units
Subcontractor Amount
Equipment Amount
Other Amount
Table B-8Opinion of Probable Construction CostProblem Area 13Astor Flood Study
A
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