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Appendix C - Engineering File Note
File note File number 25 Tulip St, Cooroy Subject Unitywater Sewer and siting of Lot 2 Author Jaro Bauleka Date 10 November 2025 • Unitywater sewer asset is located at the rear of the existing dwelling with an average grade of 2.6% fall from west to east (based on approximate of 88m from mapping). Interpolating the invert level of the sewer within the centre of Lot 2 yields a value of RL 111.91m. Allowing the following to set the dwelling’s indicative Finished Surface Level (FSL) Auxilium Consulting Pty Ltd ABN 84 639 195 092 Bli Bli Qld 4560
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o Invert of house drain is 500mm below design FSL
o Allowing 750mm cover for the existing 150mm dia sewer within a lot subjected
to traffic
The dwelling for Lot 2 will need to be at least RL 112.41m for the house connection,
with a surface level to provide for vehicle traffic of RL 112.81m.
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