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EAST AMADOR VALLEY TRUNK SEWER CAPACITY STUDY <br /> <br /> INTRODUCTION AND SCOPE <br /> <br />A. History of the East Amador Valley Trunk Sewer <br /> <br /> The East Amador VaIley Trunk Sewer serves Assessment District 1967-1, <br />which is bounded by Interstate 580 on the North, the Alamo Canal on the <br />West, the Arroyo Mocho on the South, and extends approximately i2,000 feet <br />east of the Santa Rita - Interstate 580 intersection (see Figure 1). <br /> <br />The Assessment District was initiated by the City of Pleasanton and several <br />land owners in the area, resulting in the Valley Community Services District <br />(now Dublin-San Ramon Service District) authorizing the firm of William J. <br />Black and Associates to conduct a study to determine the major elements of <br />a sanitary sewer system needed to serve the area; the study was completed <br />in 1967. Construction on the trunk line began in 1967 and was completed <br />in 1968. <br /> <br />B. Purpose of this Capacity Study <br /> <br /> The following evaluation of the trunk line was conducted to: 1) determine <br />the original flow entitlement of the study area; 2) compare the capacity of <br />the trunk line to the original entitlement flows; 3) compare the capacity <br />of the trunk line to Hacienda Business Park (HBP) projected flow plus <br />original entitlement flows for all other areas; 4) compare the capacity <br />of the trunk line to the current or projected flow requirement with <br />full buildout of the study area; and 5) determine what additional improve- <br />merits are needed to provide adequate sewage capacity for the study area. <br /> <br />C. Study Area <br /> <br />The study area for our evaIuation includes Assessment District 1967-i <br />and the anticipated additional tributary area south of Arroyo Mocho and east <br /> <br />-1- <br /> <br /> <br />