HomeMy WebLinkAboutFinal Closure Plan
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FISHERS ISLAND LANDFILL
FINAL CLOSURE PLAN
FISHERS ISLAND, NEW YORK
PREPARED FOR
FISHERS ISLAND GARBAGE AND REFUSE DISTRICT
BY
DVIRKA AND BARTILUCCI CONSULTING ENGINEERS
WOODBURY, NEW YORK
NOVEMBER 1999
+1468\F0310804,DOC(RIO)
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Section
TABLE OF CONTENTS (continued)
Title
Page
5.0 HYDRAULIC EFFICIENCy.......................................................................... 5-1
6.0 DRAINAGE AND EROSION CONTROL..................................................... 6-1
7.0 .
G
9.0
6.1 General.................................................................................................... 6-1
6.2 Design Pararneters................................................................................... 6-1
6.3 Storm Water Disposal............................................................................. 6-2
6.4 Erosion Control Practices........................................................................6-3
GROUNDWATER MONITORING ...............................................................7-1
CONSTRUCTION COST ESTIMATE ..........................................................8-1
CONSTRUCTION SCHEDULE ..................................................................... 9-1
List of Tables
3-1 Geotextile ............. .................. .......... ....... ............... .................................. 3-9
3-2 60-Mil Textured HDPE Geomembrane .................................................3-15
3-3 Geocomposite Property Values ..............................................................3-2D
3-4 Geotextile . .............................. ............... ...... ............................ ... ...... ...... 3-21
4-1 Shear Strength Parameters........................................................................4-6
5-1 HELP Model - 4% Slope, No Geocomposite Drainage Layer
Average Annual Totals for Years 1977 through 1981 .............................5-4
5-2 HELP Model - 33% Slope, No Geocomposite Drainage Layer
Average Annual Totals for Years 1977 through 1981 .............................5-5
5-3 HELP Model - 4% Slope, Geocomposite Drainage Layer
Average Annual Totals for Years 1977 through 1981 .............................5-7
5-4 HELP Model - 4% Slope, Geocomposite Drainage Layer
Average Annual Totals for Years 1977 through 1981 .............................5-8
8-1 Construction Cost Estimate...................................................................... 8-2
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8.0 CONSTRUCTION COST ESTIMATE
A cost estimate for the construction of the Fishers Island Landfill capping system is
presented in Table 8-1. The estimate has been prepared based upon the closure plan described in
this document. The unit costs used to develop this estimate are representative of comparable
work performed and material supplied in the Long Island and Eastern Connecticut areas.
The total cost for the construction of the landfill capping system and appurtenances as
presented is estimated to be approximately $1.4 million.
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. 1468IF0831802.DOC(R03)
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Table 8-1
FISHERS ISLAND LANDFILL
FINAL CLOSURE PLAN
CONSTRUCTION COST ESTIMATE
Engineer's Estimate
Item Estimated
No. Description Quantities Unit Unit Price Total Price
1. Pre-Mobilization (not to exceed four
percent (4%) of the Total Amount of
. Estimate) LS LS LS $43,500.00
2. Mobilization, Maintain and Demobilize
(not to exceed two percent (2%) of the
Total Amount of Estimate) LS LS LS $21,800.00
3. Clearing and Grubbing 5 acre $2,800.00 $14,000.00
4. Contour Grading Material 600 cu. yd. $6.00 $3,600.00
5.' Unclassified Excavation and 6,000 cu. yd. $6.00 $36,000.00
Relandfilling
6. Geotextile - Type I 190,000 sq. ft. $0.25 $47,500.00
7. Gas Venting Layer (6") 4,000 cu. yd. $18.00 $72,000.00
8. 60-Mil Textured HDPE Geomembrane 190,000 sq. ft. $0.75 $142,500.00
9. Landfill Gas Vents 7 each $3,300.00 $23,100.00
10. Geocomposite 30,400 sq. ft. $0.65 $19,760.00
11. Barrier Protection Layer (12") 7,500 cu. yd. $12.00 $90,000.00
12. Topsoil Layer (6") 4,000 cu. yd. $21.00 $84,000.00
13. Erosion Control Blanket: crown and 21,120 sq. yd. $1.50 $31,680.00
sideslopes
14. Erosion Control Fabric 970 sq. yd. $5.00 $4,850.00
15. Silt Fence 1,650 If $1.22 $2,010.00
16. Seeding (hydro) 30,230 sq. yd. $0.90 $27,200.00
17. Cui verts 0 --- $0 $0.00
18. Rip-Rap and Stone Fill 200 cu. yd. $81.00 $16,200.00
19. Fencing and Gating 800 If $18.75 $15,000.00
20. Perimeter Road 2,400 If $19.63 $47,112.00
.1468\tU831802.doc(R03)
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Table 8.1 (continued)
FISHERS ISLAND LANDFILL
FINAL CLOSURE PLAN
CONSTRUCTION COST ESTIMATE
Engineer's Estimate
Item Estimated
No. Description Quantities Unit Unit Price Total Price
2l. Abandon Existing Groundwater 4 each $3,000.00 $12,000.00
Monitoring Wells
22. 4" Diameter Slope Drains and Toe Drains 1,100 If $4.00 $4,400.00
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23. Metal Pile 141 cu. yd. $15.00 $2,115.00
24. Glass Pile 17 cu. yd. $15.00 $255.00
25. Wetlands CreationlIrnprovement LS LS LS $30,000.00
26. Shipping (Ferry Cost and Truck Time) LS LS LS $361,800.00
27. Expenses Related to Island Construction $172,900.00
15%
28. Contingency 10% $115,200.00
Total Amount of Estimate $1,440,500.00
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