Appendix-H-cost-estimatesAppendix H
Cost Estimates
City of Rancho Palos Verdes
San Ramon Canyon Storm Drain =ALTERNATE 1A Tunnel Alignment Recommended
PRELIMINARY Opinion of Probable Construction Costs
January ",2011
III Harris &Associates.
Bid Item Description Quantity Unit Unit Price Total
1 Mobilization (5%)1 LS $480,000 $480,000
2 Clearing &Grubbing (includes ALL removals)1 LS $35,000 $35,000
3 Open Trench Shoring &Plating 1 LS $35,000 $35,000
4 Traffic Control 1 LS $10,000 $10,000
5 SWPPP 1 LS $50,000 $50,000
6 Contruction Survey 1 LS $35,000 $35,000
7 Canyon Improvements -Filii Grading Operations 44,770 CY $40 $1,790,800
8 Canyon Improvments -12 inch Perforated Sub-drain 1,100 LF $130 $143,000
9 RC Inlet Structure 54"Pipe (includes RC wing wall structure,medium debris basin)U/S Tarapaca 1 LS $110,000 $110,000
10 Outlet Structure and apron onto beach (including decorative wall rock pattem I rock in invert I raning )1 LS $195,000 $195,000
11 80"Diameter "Slant Drain"Tunnel Installation -At Beach 295 LF $3,650 $1,076,750
12 80"Diameter Tunnel-Steel Rib with Wood lagging 4'to 5'increments -north of South Rancho Palos Verdes Drive 1,900 LF $2,150 $4,085,000
13 54"HDPE for Tunnel Installation (DR15.5)2,195 LF $230 $504,850
14 54"Pipe -Open Trench Installation (in open space flat plain)(DR-17)1,900 LF $315 $598,500
15 Annular Space backfill (light weight cellular grout between 54"HDPE and 80"Tunnel)1,300 CY $100 $130,000
16 Manhole Structures 5 EA $10,000 $50,000
17 Lean Concrete Seepage Dam (with 8"PVC -Outlet System at each MH)5 EA $2,500 $12,500
18 Catch Basin Inlets 4 EA $8,000 $32,000
19 Tunneling Spoil Haulage and Disposal 3,000 CY $30 $90,000
20 Launch Pits 1 LS $200,000 $200,000
21 Deep Vertical Ground Movement Monitoring Systems (Geokon MPBX Model #A3 Exlensometer,etc.)1 LS $12,000 $12,000
22 Deep Horizontal Ground Movement Monitoring Systems (Geokon Inclinometer Casing,etc.)1 LS $12,000 $12,000
23 Temporary Bluff Rock Fall Barrier System (such as "Geobrugg")for Bluff Outlet Construction 1 LS $42,000 $42,000
24 Temporarv I permanent Bluff shorina and soldier pile sYStem for Outlet Structure construction 100 VF $950 $95,000
25 Beach Access Road I Trail 1 LS $100,000 $100,000
26 Upper Inlet Access Road from Tarapaca Road (Flexible Pavement)14,500 SF $10 $145,000
27 Upper Inlet Access Road Retaining Wall 910 LF $200 $182,000
28 PCC IntercePtor Drain adiacent to back of retaining wall 910 LF $80 $72,800
Construction Sub-Total=$10,324,200
Contingency 20%$2,064,840
Construction Total=$12,389,040
29 Design Phase (8%Construction cost assumed)1 LS $1,000,000 $1,000,000
30 Desian Administration {CM {Inspection Phase (8%Construction cost assumed)1 LS $1,000,000 $1,000,000
31 RfW and Easement Acquisition 0.35 ACRE $500,000 $175,000
32 Environmental Mitigation (Hvdroseed,Planting and 5-year maintenance)1 LS $200,000 $200,000
Project Sub-Total=$14,764,040
Contingency 30%$4,429,212
GRAND TOTAL =$19,193,252
City of Rancho Palos Verdes
San Ramon Canyon Stonn Drain =ALTERNATE 2A Canyon Alignment
PRELIMINARY Opinion of Probable Construction Costs
January 11,2011
_,Harris &Associates-
Bid Item Description Quantity Unit Url:itPrice Total
1 Mobilization 5%1 LS $250000 $250000
2 Clearing &Grubbing (includes ALL removals)1 LS $50,000 $50,000
3 Shoring &Plating 1 LS $50,000 $50,000
4 Traffic Control 1 LS $40,000 $40,000
5 SWPPP 1 LS $100,000 $100,000
6 Contruction Survey 1 LS $35,000 $35,000
7 RC Inlet Structure 48"Pipe (includes RC "'"'"9 'Wal structure,large debris basin)UlS Tarapaca 1 LS $200,000 $200,000
8 RC rnlet Structure (Re wing wall structure &small debris basin)UlS of 25th St 1 LS $110,000 $110,000
9 48"Pi e·PreDared Canyon Bottom Installation DOYlnstream of TaraDaca 1210 LF $400 $484,000
10 4811 Pi e -Prepared Canyon Bottom Installation Upstream of TaraDaca in Ii hI canyon 710 LF $450 $319500
11 12"Perforated Sub-Drain 1400 LF $130 $182000
12 Canyon Enerav DissiDalors Unorouted Ri raol 7 EA $5000 $35000
13 Canyon Fm and Gradina Operations 44120 CY $40 $1764800
14 Manhole S1ructures 6 EA $10000 $60000
15 Lean Concrete SeeDaae Dam \\lith 8-PVC -Outlet System at each MH 6 EA $2500 $15000
16 Catch Basin Inlets 6 EA $8000 $48000
17 UDDer Inlet Access Road from TaraDaca Road Flexible Pavement 14,500 SF $10 $145,000
18 UDDer Intet Access Road Retainina WaR 910 LF $200 $182,000
19 pee InterceDtor Drain ad"8cent to back of retainina wall 910 LF $80 $72800
20 UDDer Inlet Access Road from 25th Street 1 LS $150000 $150000
21 Additional "Interim"pvoe SWtchback Stabilization Costs -S8Datate Dro -ect 600 LF $2000 $1200 000
22 Additional City Costs due to Permiting and Long ProJect Schedule 1 LS $500,000 $500,000
City of RPV Sub-Iotal $5,993,100
Contingency 20%$1,198,620
City of RPV Construction Cost $7,191,720
23 Design Phase (10%Construction cost assumed)1 LS $720,000 $720.000
24 Design Administration'CM I Inspection Phase (10%Construc1ion cost assumed)1 LS $720,000 $720,000
25 RJW and Easement Acquisition 1.43 ACRE $500,000 $715,000
26 Environmental Mitigation (Hydroseed,Planting and 5-year maintenance)1 LS $200,000 $200,000
City of RPV Soft Cost Sub-total $2,355,000
Citv of RPV Sub-total $9,546,720
Contingency 30%$2,864,016
City of RPV Grand Total $12,410,736
CitY of los Angeles Improvements
27 Upgrades to existing LA City SO System 2,650 LF $1,000 $2,650,000
28 Improve Existing 84"Outlet to the Beach 1 I LS I $250,000 $250,000
City of Los Angeles Sub-total $2.900,000
Contingency 20%$580,000
City of Los Angeles Construction Cost $3,480,000
29 Desian Phase 12%Construction cost assumecfl 1 LS $417600 $417600
30 Desian Administration I CM I Inspection Phase 10%Construction cost assumed)1 LS $348000 $348000
Citv of Los AnQeles Soft Cost Sub-total $765600
Cm-of Los Anaeles Sub-total $4 245600
Continaencv 30%$1273680
City of Los Anaeles Grand Total $5519280
GRAND TOTAL =$17930016
City of Rancho Palos Verdes
San Ramon Canyon Storm Drain =Upper Canyon Alternative
Extension to Alternatives 1B
PRELIMINARY Opinion of Probable Construction Costs
January 11,2011
_\Harris &Associates.
Bid Item Description Quantity Unit Unit Price Total
1 Additional Mobilization (5%)1 LS $75,000 $75,000
2 Additional Clearing &Grubbing (includes ALL removals)1 LS $30,000 $30,000
3 Shoring and Plating 1 LS $30,000 $30,000
4 swppp 1 LS $30,000 $30,000
5 Contruction Survey 1 LS $35,000 $35,000
6 Prepared Canyon Bottom Backfill Installation thru Existing Canyon -12 inch Perforated Sub-drain 1235 LF $130 $160,550
7 Prepared Canyon Bottom Backfill Installation thru Existing Canyon -FiliI Grading Operations 22,910 CY $30 $687,300
8 48"HDPE Pipe -Prepared Canyon Bottom Backfill Installation Downstream of Tarapaca (in tight canyon)1,235 LF $350 $432,250
9 RC Inlet Structure 54"Pipe (includes RC winQ wall structure)UlS Tarapaca -1 LS $110,000 -$110,000
10 Remove existina enerav dissipator and construct Junction Structure Connection to existina upper canyon outlet structure 1 LS $25,000 $25,000
11 Small RC Inlet Structure at Mid-Canyon 1 LS $50,000 $50,000
12 Manhole Structures 4 EA $10,000 $40,000
13 Lean Concrete Seepage Dam (with 8"PVC -Outlet SyStem at each MH)4 EA $2,500 $10,000
14 Additional City Costs due to Permiting and Long Project Schedule 1 LS $125,000 $125,000
Construction Sub-Total=$1,620,100
Continaencv 20%$324,020
Alternative 1A $12,389,040
Construction Total=$14,333,160
15 DesiQn Phase (8%Construction cost assumed)1 LS $1,200,000 $1,200,000
16 Desion Administration I CM IlnsDection Phase (8%Construction cost assumed)1 LS $1,200,000 $1,200,000
17 RIW and Easement Acquisition 1.45 ACRE $500,000 $725,000
18 Environmental MitiQation (Hvdroseed,Plantina and 5-vear maintenance)1 LS $400,000 $400,000
Project SUb-Total=$17,858,160
Continaencv 30%$5,357,448
GRAND TOTAL =$23,215,608
City of Rancho Palos Verdes
San Ramon Canyon Storm Drain =Upper Canyon Alternative
Extension to Alternatives 28
PRELIMINARY Opinion of Probable Construction Costs
January 11,2011
_I Harris &Associates.
Bid Item Description Quantity Unit Unit Price Total
1 Additional Mobilization (5%)1 LS $70,000 $70,000
2 Additional Clearing &Grubbing (includes ALL removals)1 LS $30,000 $30,000
3 Shoring and Plating 1 LS $30,000 $30,000
4 SWPPP 1 LS $30,000 $30,000
5 Contruction Survey 1 LS $35,000 $35,000
6 Prepared Canyon Bottom Installation thru Existing Canyon -12 inch Perforated Sub-drain 1235 LF $130 $160,550
7 Prepared Canyon Bottom Installation thru Existing Canyon -FiliI Grading Operations 22,910 CY $30 $687,300
8 48"HOPE Pipe -Prepared Canyon Bottom Installation Downstream of Tarapaca (in tight canyon)1,235 LF $350 $432,250
9 RC Inlet Structure 48"Pipe (includes RC wina wall structure,larae debris basin)UlS Tarapaca -1 LS $200,000 -$200,000
10 Remove existina enerav dissioator and construct Junction Structure Connection to existing upper canyon outlet structure 1 LS $25,000 $25,000
11 Small RC Inlet Structure at Mid-Canyon (RC wing wall structure &small debris basin)1 LS $80,000 $80,000
12 Manhole Structures 4 EA $10,000 $40,000
13 Lean Concrete Seepage Dam (with 8"PVC -Outlet SyStem at each MH)4 EA $2,500 $10,000
14 Additional City Costs due to Permiting and Long Project Schedule 1 LS $125,000 $125,000
Construction Sub-Total=$1,555,100
Contingency 20%$311,020
Alternative 2A $10,671,720
Construction Total=$12,537,840
15 Design Phase (8%Construction cost assumed)1 LS $1,100,000 $1,100,000
16 Desion Administration I CM I Inspection Phase (8%Construction cost assumed)1 LS $1,100,000 $1,100,000
17 RIW and Easement Acauisition 2.60 ACRE $500,000 $1,300,000
18 Environmental Mitiaation (Hvdroseed,Plantina and 5-vear maintenance)1 LS $400,000 $400,000
Project Sub-Total=$16,437,840
Continaencv 30%$4,931,352
GRAND TOTAL =$21,369.192
City of Rancho Palos Verdes
San Ramon Canyon Storm Drain
Low Cost Alternative
PRELIMINARY Opinion of Probable Construction Costs
November 12,2010
_I Harris &Assodatesw
Bid Item Description Quantity Unit Unit Price Total
1 Mobilization 1 LS $60,000 $60,000
2 Clearing and GrUbbing 1 LS $30,000 $30,000
3 Shoring and Plating 1 LS $20,000 $20,000
4 swppp 1 LS $30,000 $30,000
5 Contruction Survey 1 LS $35,000 $35,000
6 Interim Inlet Structure 1 LS $55,000 $55,000
7 48"HDPE Pipe -Prepared Canyon Bottom Installation 900 LF $400 $360,000
8 12 inch Perforated Sub-drain 900 LF $130 $117,000
9 Oulet Energy Dissipator Structure downstream of Tarapaca Landslide 1 LS $55,000 $55,000
10 Grading Operations 21,000 CY $30 $630,000
11 RC Inlet Structure (RC wing wall structure &large debris basin)U/S of 25th St 1 LS $125,000 $125,000
12 Additional City Costs due to Permiting and Long Project Schedule 1 LS $125,000 $125,000
Construction Sub-Total=$1,642,000
Contingency 20%$328,400
Construction Total=$1,970,400
13 Design Phase (10%Construction cost assumed)1 LS $200,000 $200,000
14 Design Administration /CM /Inspection Phase (10%Construction cost assumed)1 LS $200,000 $200,000
15 RIW and Easement Acquisition 0.50 ACRE $500,000 $250,000
16 Environmental Mitigation (Hydroseed,Planting and 5-year maintenance)1 LS $200,000 $200,000
Project Sub-Total=$2,820,400
Contingency 30%$846,120
GRAND TOTAL =$3,666,520