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• B. Sanitary Sewer System Facilities City of Pleasanton The City operates a sanitary sewer system that serves a residential population of approximately 70,300 in a 24 square mile service area. The sewer system consists of about 255 miles of gravity sewers, approximately 25,192-feet of force main, and ten pump stations. Average Daily Dry Weather flow is 7 million gallons per day(MGD).The sewers range in size from 4-inch to 36-inch diameter. The City also receives wastewater from the Castlewood Area of Alameda County. Sewer service laterals are owned by, and therefore the responsibility of,the property owner to maintain and assure serviceability.The City may provide maintenance services to laterals located within the public right of way as a courtesy service if a property line cleanout exists,and the cleanout and adjacent area are accessible to City staff and equipment. The City will not perform repair, rehabilitation, or replacement of any portion of sewer service laterals located on private property.There are 26,336 lateral connections within the City. Table 1-1 Sewer System Size Distribution Diameter Total Linear Portion of Feet Sewer System Unknown 699 0.05% 2.5 inch 677 0.05% 4 inch 8,851 0.66% 6 inch 156,188 11.59% 8 inch 916,597 68.04% 10 inch 107,360 7.97% 12 inch 30,135 2.24% 14 inch 341 0.03% 15 inch 45,512 3.38% 16 inch 3,139 0.23% 18 inch 30,077 2.23% 19 inch 988 0.07% 21 inch 6,532 0.48% 24 inch 10,378 0.77% 27 inch 14,691 1.09% 30 inch 11,463 0.85% 36 inch 3,499 0.26% Total 1,347,127 100.00% 3jPage