Appendix_M_(Part_2).pdf

INVESTIGATION REPORT

BASE STORM DRAINAGE STUDY

APPENDICES

TYPE 1-A 100% SUBMITTAL

DAVIS MONTHAN AIR FORCE BASE, ARIZONA

Project Number: FBNV 990216 Facility Number: 87110

29 January 2001

CONTENTS

APPENDIX A Hydrologic Calculations APPENDIX B Hydraulic Calculations B-1 Cross-Sections B-2 Existing Culvert and Storm Drain Analyses B-3 Proposed Culvert Analyses B-4 Detention Basin Analyses APPENDIX C Annotated 65% and 90% Review Comments APPENDIX D Building 4844 Analyses and Proposed Concept APPENDIX E Preliminary Concept Cost Estimates

APPENDIX A – Hydrologic Calculations

APPENDIX B-1 – Cross-Sections

APPENDIX B-2 – Existing Culvert and Storm Drain Analyses

APPENDIX B-3 – Proposed Culvert Analyses

APPENDIX B-4 – Detention Basin Analyses

APPENDIX C – Annotated 65% and 90% Review Comments

APPENDIX D –Building 4844 Analyses and Proposed Concept

APPENDIX E –Preliminary Concept Cost Estimates

Base Storm Drain Study Preliminary

Concept Cost Estimates

Description type bottom width top width depth area linear ft Unit Unit Cost Total Cost channel B100 earthen * 50 75.5 4.25 267 2100 20742 CY $1.75 $36,299.13 channel B200 earthen 20 44 4 128 1500 7111 CY $1.75 $12,444.44 channel B300 earthen 20 41 3.5 107 2000 7907 CY $1.75 $13,837.96 channel B400 earthen 10 25 2.5 44 2500 4051 CY $1.75 $7,089.12 channel B500 earthen 60 81 3.5 247 500 4569 CY $1.75 $7,996.53 channel B600 earthen 20 39.5 3.25 97 1150 4118 CY $1.75 $7,206.80 channel B700 earthen 15 33 3 72 1350 3600 CY $1.75 $6,300.00 channel B800 earthen 30 49.5 3.25 129 2500 11962 CY $1.75 $20,933.16 detention basin outlet CP B5 rip rap 1600 1600 SF $2.50 $4,000.00 embankment culvert CP B3.5 4-10'X5' CBC 80 80 LF $420.00 $33,600.00 culvert CP B3.9 2-8'X3' CBC 60 60 LF $305.00 $18,300.00 culvert CP B4.1 4-10'X5' CBC 80 80 LF $420.00 $33,600.00 culvert CP B4.3 2-10'X5' CBC 60 60 LF $420.00 $25,200.00

B4.3 alternative 5-60-inch RCPs 360 360 LF $170.00 $61,200.00 subtotal: $110,700.00 20% $22,140.00 total: $132,840.00 channel G100 earthen 40 55 2.5 119 1500 6597 CY $1.75 $11,545.14 channel G200 earthen 40 65.5 4.25 224 2350 19513 CY $1.75 $34,147.08 channel G300 earthen 30 48 3 117 2100 9100 CY $1.75 $15,925.00 channel G400 earthen 25 43 3 102 950 3589 CY $1.75 $6,280.56 channel G500 earthen 20 45.5 4.25 139 3100 15981 CY $1.75 $27,966.38 channel G600 earthen 20 41 3.5 107 1800 7117 CY $1.75 $12,454.17

Base Storm Drain Study Preliminary

Concept Cost Estimates

Description type bottom width top width depth area linear ft Unit Unit Cost Total Cost culvert G1 3-8'X3' 60 60 LF $305.00 $18,300.00 culvert G2 3-8'X3' 60 60 LF $305.00 $18,300.00 detention basin CP G3 12907 CY $2.60 $33,558.20 subtotal: $178,476.52

20% $35,695.30 total: $214,171.82 channel A100 earthen 10 22 2 32 1000 1185 CY $1.75 $2,074.07 channel A200 earthen 20 32 2 52 1000 1926 CY $1.75 $3,370.37 channel A300 earthen 10 22 2 32 500 593 CY $1.75 $1,037.04 storm drain RCP (24" max) 1000 1000 LF $50 $50,000 catch basins/grates standard 5 EA $1,800 $9,000 subtotal: $65,481 20% $13,096.30 total: $78,578

Building 4844 storm drain RCP (24"max) 35 35 LF $50 $1,750 catch basin/grates standard 2 EA $1,800 $3,600 remove/replace asphalt 100 SY $35 $3,500 manhole 1 EA $2,500 $2,500 metal overhang with gutter/spout LS $750 $750 subtotal: $12,100 20% $2,420 total: $14,520

*onsite haul