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<br /> <br />City of Redwood City Page 4 <br />Sewer System Management Plan, March 2018 Introduction <br />Intro Table 1 . Gravity Sewer System Size Distribution <br />Diameter, inches <br />Number of Line <br />Segments <br />Pipe Length, <br />linear feet <br />Portion of Sewer <br />System, % <br />4 18 1,840 0.19% <br />6 2,141 390,196 40.22% <br />8 2,309 401,499 41.38% <br />10 327 65,885 6.79% <br />12 149 30,017 3.09% <br />14 7 1,263 0.13% <br />15 145 34,830 3.59% <br />16 31 3,694 0.38% <br />18 88 20,163 2.08% <br />21 14 3,378 0.35% <br />24 16 4,252 0.44% <br />27 18 5,413 0.56% <br />27.84 1 175 0.02% <br />30 13 3,032 0.31% <br />33 8 2,313 0.24% <br />36 2 51 0.01% <br />42 2 28 0.00% <br />48 7 1,505 0.16% <br />60 1 350 0.04% <br />Unknown 3 316 0.03% <br />Total 5,300 970,200 100% <br />Total, Miles 183.75 <br />Source: City GIS files <br /> <br /> <br />6.2.A. - Page 12