Schedule of Values
2019 Landfill Gas System Expansion - Change Order
Four Hills Landfill
Nashua, New Hampshire
Prepared February 3, 2020
Item Description Quantity Bid Unit Cost | Extended
No. (w/ units) ($/units) Prices ($)
1 |Mobilization/Demobilization 1 LS | $24,000 LS $24,000
2 |Pipe Trench :
a, Single Pipe - 2" SDR 9 HDPE Compressed Air Pipe 630 LF | 345.00 LF $28,350
b. Single Pipe - 3°@ SDR 11 HDPE Condensate Main 115 LF | $47.00 LF $5,405
c. Single Pipe - Perforated Pipe Collection Trench 1,665 LF | $88,006 LF $91,875
d. Single Pipe - 4"@ Solid SDR 17 HDPE Pipe Trench 185 LF $86.00 LF $15,910
e, Single Pipe - 6"@ Solid SDR 17 HDPE Pipe Trench 545 LF $84.00 LF $45,780
f, Dual Pipe Trench -2"4 SDR 9 HDPE Compressed Air Pipe
& 3°A SDR 11 HDPE Condensate Main 125 LF | g81.00} LF $10,125
pe, Three-Pipe Trench - 2" SDR 9 HDPE Compressed Air
Pipe, 3" SDR 11 HDPE Condensate Main, and 6"9 Solid 135 LF | $52.00 | Er } $7,020
SDR 17 HDPE Gas Conveyance Pipe
h, Three-Pipe Trench - 2"@ SDR 9 HDPE Compressed Air
Pipe, 3"@ SDR 11 HDPE Condensate Main, and 4"6 500 LF | $72.00 | LF | $36,000
perforated SDR 17 HDPE Pipe in crushed stone
j. Three-Pipe Trench - 12"8 SDR 17 HDPE Gas Conveyance
Pipe, 3"@ SDR 11 HDPE Condensate Main, and 4"@ 250 LF | $88.00 | LF | $22,000
perforated SDR 17 HDPE Pipe in crushed stone
j. Four-Pipe Section - 12"@ SDR 217 HDPE Gas Conveyance
Pipe, 3"9 SDR 11 HDPE Condensate Main, 2"@ SDR 9
HDPE Compressed Air Pipe, and 4" perforated SDR 17 370 LF | $92.00 | LF | $34,040
HDPE Pipe in crushed stone
k. Condensate Main Cleanouts 2 EA | $4,300.00 EA | $2,600
1. Compressed Air Pipe Isolation Valves 3 EA | 3890.00 EA | $2,400
m. Cut & Connect to Existing 12" HDPE Pipe 1 EA | $2,000.00 | EA | $2,000
3__|Wellhead Assemblies (8 new, reuse S existing) 13 EA | 3700.00 EA | 39,100
4 |Remote Weil Connection 1 EA | $3,200.00 | EA $3,200
5 {Bentonite Seals 20 EA $2,900.00 | EA | 358,c00
6 |Decommission Existing Gas Collection Trenches 5 EA $1,000.00} FA | $5,000
7 |Condensate Trap Drain Repair i LS $5,200.00] LS | 35,200
8 |Survey 1 LS $15,000.00] LS 515,000
Change Order # 1 and #2 Total] $422,705
Less Previously Approved Change Order #1] ($135,140)
| Change Order #2 Total] $287,565
Notes:
1, Quantities were obtained from drawings titled "2019 Landfill Gas System Expansion - Change Order," dated
February 2020.
2. All pipe lengths in the table above are plan view lengths (2D) and do not account for slope.
UALFG Colicction System\2019 LPG System Expansion\Change Order), ;
20200203 Schedule of Valtes.xtsx Sanborn Head & Associates, Inc.
