Recycling Treated Municipal Wastewater for Industrial Water Use

Appendix B
Reclaimed Water Transmission Main Capital Cost and Pumping Cost Analysis
• In urban areas: 50 ft per 600 ft of pipe installation are assumed to require
pavement removal and replacement to account for crossing streets. The entire
length includes traffic control and one curb is replaced.
• Surface restoration is sod in urban areas and seeding in rural areas.
Unit costs at a project level were developed by applying several multipliers to the unit
construction costs estimated for the transmission mains. To calculate a project cost,
undeveloped design details were estimated as 50% of the construction cost, administration
and legal expenses were calculated as 20% of the construction cost plus the undeveloped
design details. The undeveloped design detail includes an allowance for related
appurtenances including manholes, isolation valves, and combination air release/vacuum
valves. The contractor’s overhead and profit was included in the construction cost.
Table 1. Unit Construction and Project Costs for Force Mains 1
Unit Construction Cost
Unit Project Cost
($/LF)
2
($/LF)
Sept. 2006 dollars Sept. 2006 dollars
Diameter Urban Rural Urban Rural
(inches) Area Area Area Area
4 54 44 97 79
6 59 48 106 86
8 64 53 115 95
10 71 60 128 108
12 78 66 140 119
14 87 76 157 137
16 105 93 189 167
18 117 105 211 189
20 131 119 236 214
24 158 146 284 263
30 196 180 353 324
36 241 224 434 403
42 295 277 531 499
48 373 353 671 635
54 434 413 781 743
60 495 470 891 846
1 Based on the following:
-Sept. 2006 dollars, ENR CCI = 7763
-Mean Indices, 2006 and Cost Tool with detailed unit costs (Exhibit 1)
-Average depth of installation for force mains assumed to be 8 ft.
-4 to 24” pipe is PVC; >24” is DIP
2
Project unit costs based on master planning level assumptions: 50% for undeveloped design detail
(includes allowance for related appurtenances), Contractor OH&P (included in Construction Cost), and
20% for Engineering, Admin, and Legal.
B-3