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5.0 Wetwell Elevations (Refer to Chart on Plans) <br /> Base elevation = 82.84 <br /> Pump off elevation = 84.51 <br /> Pump on elevation = 85.34 <br /> Alarm elevation = 87.00 <br /> Inlet elevation = 87.78 <br /> Discharge pipe elevation 91.84 <br /> Rim elevation = 95.84 <br /> 6.0 Volumes of Wet Well Basin <br /> 2,827 in3/in = 12.24 gal/in <br /> Dead storage volume (bottom-off) <br /> (20")12.24-gal/in = 24.48 gal <br /> Volume between off-on <br /> (10")12.24 gal/in = 122.4 gal <br /> Volume between on-alarm <br /> (20")12.24 gal/in =244.8 gal <br /> Volume between alarm-invert in (24-hour holding capacity) <br /> (50")12.24 gal/in = 612.0 gal <br /> Backup storage volume of 612 gallons is provided. The dual system is connected to emergency <br /> backup power, so it is exempt from the 24 hours of storage per Washington State Department of <br /> Ecology (DOE)Criteria for Sewage Works Design, Section C1-10.1.6. <br /> 7.0 Cycle Time <br /> SYSTEM CYCLES PER DAY- 5,392 gpd = 44.0 cycles/day <br /> 122.4 gal <br /> AVERAGE FLOW <br /> Use 3.74 gpm flow into the wet well and 67 gpm pump out rate: <br /> Outflow 67-3.74 = 63.26 gpm <br /> Pump out- 122.4 gal 1.93 min <br /> time 63.26 gpm <br /> Tank fill- 122.4 gal 32.72 min or 0.55 hrs <br /> time 3.74 gpm <br /> Grinder Pump No 0111011 <br /> North Sound Behavioral <br /> ral Health Treatment 2 <br /> AHBL No.2170857.10 <br />