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1 <br />1 <br />1 <br />1 <br />0 <br />D <br />1 <br />e <br />1 <br />1i <br />190,000 gallons per month of leachate to the wastewater treatment plant. The onsite <br />leachate forcemain system consists of a 3,100 foot long four -inch diameter forcemain <br />from the Segment 2 pump station to a manhole near the new <br />maintenance/administration building. This manhole also collects sanitary waste from <br />the new maintenance/administration building. The four -inch forcemain is equipped <br />with a magnetic flow meter which will provides instantaneous flow readings and <br />totalizes flows. From the manhole, the leachate and sanitary waste flow to a regional <br />lift stations on Rangeline Road which repump the waste towards the regional <br />wastewater treatment plant. <br />The existing Segment 2 leachate collection/conveyance system includes twelve 6 -inch <br />diameter perforated leachate laterals with solid pipe end segments, eight leachate <br />collection manholes, an eight -inch diameter solid pipe header to drain the western half <br />of the system, eight -inch and 10 -inch diameter headers to collect leachate from the <br />eastern half, a header junction manhole, and the leachate pump station/sump. Each of <br />the collection manholes receive leachate from three laterals, and empty to the gravity <br />header system. The header pipes drain by gravity to a pump station wet well. The <br />manholes have grouted bottom surfaces for smooth flow-through. No valves are <br />located in the manholes for leachate shut-off. <br />The Segment 2 leachate collection system is currently accessible for cleaning through <br />the eight collection manholes (four to the east, four to the west) and the wet well. The <br />four western manholes will be removed due to the infill expansion. The collection pipes <br />will be connected directly to the leachate header without manholes. Until infill <br />construction begins, the manholes should be inspected as a preventative maintenance <br />practice to assess the amount of sediment collected in the manholes and the header <br />system. The manholes should be cleaned if sediment buildup impedes leachate <br />entering the manhole or leachate entering the header pipes. If leachate flow into one <br />42063 <br />F-16 <br />rc n 17, ,r1r": +fie?^ • <br />44� <br />4774,7-7,5 <br />cp <br />