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Forward Landfill <br />Compost Pond <br />HYDROLOGY <br />07/17/2014 <br />Notes: <br />(1) All overland slopes are <br />relatively flat (less than 2%) <br />with shallow flow. Channel <br />slopes are less than 0.2%. <br />Potential erosion and <br />sedimentation is low. <br />(2) From water budget the maximum operational storage occurs in January. <br />(3) Maximum of Flood or Process volume plus sediment volume. Does not include 2' freeboard. <br />(4) Total storage volume including freeboard from stage storage curve. <br />(5) Freeboard volume is storage provided less volume required. <br />(6) Freeboard depth is taken from the stage storage-curve. <br />(7) Required freeboard depth is equal to the minimum freeboard plus the direct precipitation for the 25YR storm. <br />(8) 25 year 24 hour storm rainfall from NOAA 14. <br />(9) Reserve freeboard is the provided less the required. <br />22 <br />24 <br />26 <br />28 <br />30 <br />32 <br />34 <br />36 <br />0.0 5.0 10.0 15.0 20.0ELEVATION (FEET) <br />VOLUME (AC-FT) <br />STAGE-STORAGE CURVE <br />30.8 <br />10.117.435.0 <br />7.34.2FREEBOARD <br />PROCESS WATER <br />Hydrology Compost Pond Page 3 of 6