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120 <br /> CommunitySmall 1 1 Construction 1 <br /> sewers are$16.91/month/EDU excludes solids management).7 According to Cagle et al,considering up-front capital and repair/replacement <br /> costs as well as 0&M costs over the projected life of the collection systems for Lacey,Washington,the life cycle costs of Lacey's STEP sewer are <br /> lower than those of a typical gravity sewer.8 <br /> Table 1.Constructed Costs*for Various Collection System Technologies(USD 2014). <br /> Type Average Median Minimum Maximum <br /> STEP $9,702 $9,283 $6,666 $15,687 <br /> Gravity $16,394 $15,304 $10,247 $25,112 <br /> Grinder $11,468 $11,258 $6,488 $15,693 <br /> *USD 2014 costs adjusted per ENRCCI. <br /> Throughout this document,costs for collection systems are separated into two main components; (1)on-lot equipment(i.e.components installed <br /> on private property with easements for construction and maintenance),and (2) Right-Of-Way(ROW)components that consist of pressure mains, <br /> gravity mains,and ancillary equipment. <br /> 1 <br /> t � <br /> '4 <br /> 17, <br /> Figure 1.Collection system costs include on-lot equipment and right-of-way components. <br /> All costs contained herein are approximate, largely predicated upon publicly bid jobs with prevailing wage requirements,and require further evalu- <br /> ation and corroboration.Where noted, 2014 costs are adjusted according to Engineering News Record's Construction Cost Index(ENRCCI). <br /> On-Lot Capital Costs <br /> Costs: Effluent Sewer On-Lot Pump Package <br /> On-lot equipment for effluent sewers consists of the following: <br /> • 1,000-or 1,500-gal (4-or 6-m3) interceptor tank(typically constructed of concrete or fiberglass) <br /> • Tank access equipment(including access riser and access riser lid) <br /> • Pump vault with 1/8-inch (3-mm) mesh screen <br /> • Control panel <br /> • High-head effluent pump,%2 Hp(0.25 kW), 115 VAC <br /> • Service connection (ball valve and check valve) <br /> • Short building sewer line <br /> • Shallowly buried,small-diameter service lateral at constant depth (below frost depth) <br /> NFS-EFS-CC-1 ®2014 Orenco Systems®Inc. <br /> Rev.1.6,©08/14 <br /> Page 2 of 13 <br />