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� 'v � <br /> !. <br /> EXISTINa OUTFALL REHABILITATION <br /> Advantaqes: <br /> (aj Reduced initial cost. <br /> (b) No major interruption of traffic or destruction <br /> of street surfacing. <br /> Disadvan�aqes: <br /> (a) Continued operation of an 80+ year old facility, <br /> rehabilitated but of irregular shape, size and <br /> condition. <br /> (b) Limited hydraulic capacity. Preliminary com- <br /> putations indicate that the existing facility, <br /> as rehabilitated, would serve the present tribu- <br /> tary area with no apparent surcharge during a <br /> 5-year intensity storm. If the tributary area <br /> is extended to 16th Street, as proposed in the <br /> 1966 Storm Sewer Report, the additional storm <br /> water flow could surcharge the facility approxi- <br /> mately 6 feet at Franklin Street, such surcharge <br /> tapering off to a negligible amount at its point <br /> of discharge and at the diversion structure at <br /> Jackson Street. <br /> (c) No major rehabilitation is proposed to eliminate <br /> joint leakage (seepage) in the various sections <br /> of 48" reinforced concrete pipe. Continued <br /> monitoring of such sewer should be provided with <br /> future repair, as warranted. <br /> 87023A B-16 <br /> 25 of 29 <br />