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Attachment 4
<br /> Forward Landfill-187.6-Acre Closure Area
<br /> Gas Control System Modifications Cost Estimate
<br /> Item Qty 187.6- Total
<br /> No. Description Acre Area Unit Unit Costs Cost
<br /> 1 Construction Mobilization/Demobilization 1 0 EA $ - $0
<br /> 2 Salvage and re-install well manifold 38 EA $ 2,248.25 $84,354
<br /> 3 Salvage and re-install wellhead assembly 29 EA $ 189.18 $5,521
<br /> 4 2"SCH 80 PVC well lateral&fittings in trench/sleeve 3,669 LF $ 7.22 $26,487
<br /> 5 2"SDR 9 HDPE compressed air in common trench umper 6,253 LF $ 2.81 $17,572
<br /> 6 Salvage and re-install 2"HDPE compressed air/condensate 36,686 LF $ 1.55 $56,864
<br /> 7 2"SDR 11 HDPE condensate line in common trench 'umper) 6,253 LF 1 $ 2.07 $12,944
<br /> 8 4"SDR 17 HDPE,single pipe in trench 125 LF $ 13.89 $1,737
<br /> 9 4"SDR 17 HDPE,multiple lines in common trench 4,169 LF $ 8.33 $34,727
<br /> 10 18"PVC Blind Flange 4 EA $ 715.92 $2,985
<br /> 11 4"HDPE Electro-fusion coupling 334 EA $ 77.62 $25,887
<br /> 12 Cut&Cap existing 2"HDPE air or condensate line HDPE 75 EA $ 69.00 $5,178
<br /> 13 Cut&Cap existing 4"HDPE well lateral(PVC) 334 EA $ 66.12 $22,052
<br /> 14 Cut&Cap existing 18"HDPE header PVC 33 EA $ 399.65 $13,329
<br /> 15 Install 18"x 8"HDPE saddle for temporary jumper) 29 EA $ 617.84 $18,030
<br /> 16 2"PVC Mip Adapter into existing HDPE or PVC header 29 EA $ 35.50 $1,036
<br /> 17 Salvage and re-install 18"x 6"PVC Saddlerree @ manifold 21 EA $ 569.08 $11,862
<br /> 18 Salvage and re-install 18"x 6"HDPE Saddle/Tee C manifold 13 EA $ 512.90 $6,415
<br /> 19 Salvage and re-install 18"PVC Elbow 13 EA $ 569.08 $7,117
<br /> 20 Salvage and re-install 18"HDPE Flange Adapter&Hardware 4 EA $ 256.45 $1,069
<br /> 21 Salvage and re-install 18"PVC Flange&Hardware 13 EA $ 342.03 $4,278
<br /> 22 18"SDR 17 HDPE pipe in trench as required) 834 LF $ 54.21 $45,199
<br /> 23 Salvage and re-install 18"SDR 17 HDPE in trench 5,420 LF 1 $ 45.50 $246,590
<br /> 24 Salvage and re-install 18"x 14"HDPE Eccentic Reducer 42 EA $ 256.45 $10,691
<br /> 25 Salvage and re-install 18"SCH 40 PVC Header on pipe 12,924 LF $ 30.95 $399,984
<br /> 26 Salvage and re-install double pipe support 792 EA $ 201.14 $159,321
<br /> 27 Install double pipe support 83 EA $ 286.18 $23,861
<br /> 28 18"PVC Schd40 Pipe on Supports 1,251 LF $ 52.43 $65,572
<br /> 29 Salvage and re-install 14"ITC Flex Hose and clamps 75 EA $ 259.38 $19,464
<br /> 30 Salvage and re-install 18"x 14"Eccentric PVC Reducer 117 EA $ 342.03 $39,925
<br /> 31 Salvage and re-install 18"Butterfly Valve 4 EA $ 629.53 $2,624
<br /> 32 Salvage and re-install Condensate Pump Station 4 1 EA $ 2,645.00 $11,027
<br /> 33 Salvage and re-install 18"x 4"HDPE Tee at sum 4 EA $ 384.68 $1,604
<br /> 34 Salvage Covanta Energy piping on grade 1 LS $ 7,500.00 $7,500
<br /> 35 Re-install Covanta Energy pipingon grade 1 LS $ 13,000.00 $13,000
<br /> 36 Cut&Cap Covanta Energy Vertical Gas Extraction Well 50 EA $ 287.50 $14,383
<br /> 37 Extend Covanta Energy Vertical Gas Extraction Well 50 EA $ 575.00 $28,765
<br /> 38 Extend Condensate Pump Station 21 EA 1 $ 1,581.25 $32,960
<br /> 39 Single Pipe Support 17 EA $ 52.03 $868
<br /> 40 Salvage and re-install single pipe support 83 EA $ 41.62 $3,470
<br /> 41 6"CSP Sleeve Road Crossing 1,834 LF $ 12.00 $22,012
<br /> 42 Install 10"x 6"PVC saddle or tee for temporary manifold 4 EA $ 321.14 $1,339
<br /> 43 8"PVC flange&hardware 4 EA $ 335.43 $1,398
<br /> 44 8"HDPE flange adapter,back-up ring,&hardware 4 EA $ 317.72 $1,325
<br /> 45 14"x 8"PVC Reducer 4 EA 1 $ 730.92 $3,047
<br /> 46 14"PVC Elbow 4 EA $ 483.13 $2,014
<br /> 47 18"PVC Couplings 625 EA $ 313.28 $195,904
<br /> 48 Paint PVC Wellheads/Piping Wellheads/Piping1 LS $ 53,000.00 $53,000
<br /> 49 18"Electrofusion Coupling 33 EA $ 930.92 $31,047
<br /> 50 4"PVC Couplings 104 EA $ 29.27 $3,051
<br /> 51 6"PVC Cou lin s 125 EA $ 49.74 $6,221
<br /> Subtotal $1,806,609
<br /> 52 Miscellaneous glue/primer&shipping 1% 1 LS $ 18 066.09 $18 066
<br /> TOTAL $1,824,675
<br /> NOTES:
<br /> Mobilization and demobilization included in Section 1 of Table 3.
<br /> Salvaged PVC header will have existing bells removed and replaced with couplings for re-installation.
<br /> Salvaged PVC fittings will be re-connected via installation of new couplings on both sides of fitting.
<br /> Salvaged PVC and HDPE pipe and fittings may require that some new replacement materials be purchased.
<br /> Unit costs utilized in this attachment were obtained from recent construction bids for ongoing worklexpansion of the LFG
<br /> system. The material quantity were based on the 187.6 acres closure area in proportion to the closure of the Stage 1A partial
<br /> closure project completed in 2005 at the Forward Landfill.
<br /> LFgSystem Back-upBASC
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