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<br /> CommunitySmall Collection Construction Costs
<br /> Table 8.Constructed Costs:Gravity Sewer Manholes(USD).
<br /> Project Name Yr Connections Unit USD
<br /> Lore City, OH 2013 129 Each $3,500 to$5,500
<br /> Coolville, OH 2013 196 Each $2,800 to$6,000
<br /> Harrisville, OH 2013 97 Each $2,345 to$4,650
<br /> Glenford, OH 2014 64 Each $2,700 to$4,500
<br /> When gravity sewers are installed in trenches deeper than 10 ft(3 m),the cost of sewer line installation increases significantly because of the
<br /> more complex and costly excavation equipment and trench shoring techniques required. Lift stations are used to reduce mainline installation
<br /> depth and, in some cases, reduce the capital cost of sewer system construction. Lift station construction has a significant economy of scale,and
<br /> is generally expensive and difficult to apply to small communities. For example, if the capacity of a lift station is increased by 100%,the construc-
<br /> tion cost would increase only by 50 to 55%.Table 9 lists constructed costs for lift stations that were constructed for small communities.
<br /> Table 9.Constructed Costs:*Gravity Sewer Lift Stations(USD).
<br /> Project Name Yr Unit Qty USD
<br /> Coolville, OH (Pump Station#1) 2013 Each 1 $50,000
<br /> Coolville, OH (Pump Station#2) 2013 Each 1 $45,000
<br /> Coolville, OH (Pump Station#3) 2013 Each 1 $45,000
<br /> Coolville, OH (Pump Station#4) 2013 Each 1 $50,000
<br /> Coolville, OH (Pump Station#5) 2013 Each 1 $90,000
<br /> Harrisville, OH (Pump Station#1) 2013 Each 1 $97,250
<br /> Harrisville, OH (Pump Station#2) 2013 Each 1 $97,125
<br /> Glenford, OH 2014 Each 2 $90,000
<br /> Coolville,OH(235 connections),Harrisville,OH(97 connections),and Glenford,OH(64 connections).
<br /> Tank Decommissioning and Abandonment Costs
<br /> Providing sewer service to communities that currently manage wastewater with individual onsite systems typically requires abandonment of the
<br /> existing septic tanks.Wastewater from existing septic tanks is first pumped, and then the tank is typically crushed and backfilled with appropriate
<br /> fill material.Table 10 lists septic tank abandonment costs from various septic tank abatement projects. Construction costs will vary based upon (1)
<br /> tank depths and locations, (2) geological conditions, (3) backfill costs,and (4)septic tank pumping and hauling costs.
<br /> Table 10.Costs:Decommissioning and Abandonment of Existing Septic Tank.
<br /> Project Name Year Unit Qty USD/Connection
<br /> Atoka,TN 2009 Each 226 $400
<br /> Bayou La Batre,AL 2010 Each 26 $550
<br /> Lexington, IN 2010 Each 117 $373
<br /> EI Dorado,AR 2011 Each 440 $495
<br /> Rathbun Lake, IA 2011 Each 27 $475
<br /> Fulton,AL 2012 Each 125 $200
<br /> Bixby, MN 2012 Each 28 $280
<br /> NFS-EFS-CC-1 ®2014 Orenco Systems®Inc.
<br /> Rev.1.6,©08/14
<br /> Page 8 of 13
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