ARCHIVED REPORTS_DRAFT ENVIRONMENTAL IMPACT REPORT

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3 PROJECT DESCRIPTION 3.1 PROJECT LOCATION Manteca is located at the northern end of the San Joaquin Valley in central California, at the junction of State Route(SR)99 and SR 120, approximately 75 miles east of San Francisco and 55 miles south of Sacramento. The existing City of Manteca Wastewater Quality Control Facility(WQCF) is located approximately 2.5 miles west of downtown Manteca at 2450 West Yosemite Avenue(Exhibits 3-1 and 3-2). Improvements proposed as part of the WQCF and Collection System Master Plans Update Project would generally be located at the existing WQCF site and within existing or proposed right-of-way within the City of Manteca, as shown on Exhibit 3-2. The WQCF occupies approximately 22 acres of a 210-acre City of Manteca(City)-owned site,which is bounded generally by Yosemite Avenue to the north, SR 120 to the south,Airport Way to the east, and both McKinley Avenue and the Union Pacific Railroad to the west. The proposed WQCF expansion and upgrades would primarily be located within the existing 22-acre WQCF site.A proposed treated effluent outfall pipeline would extend from the WQCF to a side-bank outfall structure at the San Joaquin River. Proposed wastewater collection system improvements would generally be located along the perimeter of the city. Local roadways in the vicinity of the proposed wastewater collection system trunk sewers include Woodward Avenue,Lathrop Road, and Airport Way. As shown on Exhibit 3-3,the proposed project would result in the construction of three large diameter trunk sewers in and around the city. Trunk sewers in the north and south would collect wastewater from areas where future growth is expected,while a central trunk sewer would connect the City's existing wastewater collection system to the north trunk sewer. A proposed recycled water distribution system would primarily follow Woodward Avenue,Airport Way, and Center Street(Exhibit 3-3). Agricultural land surrounds the WQCF site on all sides. Beyond that, land uses near the WQCF include residential development to the north, east, and west. Also located to the north is light industrial and commercial development. A"Big League Dreams" sports complex and commercial development is located to the south. Land uses along the proposed wastewater collection system and recycled water distribution system pipeline alignments include a mixture of commercial,residential,park and open space, and agricultural land uses. 3.2 PROJECT PROPONENT The City proposes to adopt the WQCF and Collection System Master Plans Update Project(project),which incorporates both the 2007 City of Manteca Wastewater Quality Control Facility Master Plan Update and the 2006 City of Manteca Wastewater Collection System Master Plan Update. The City would be the lead agency and project proponent, and the Manteca City Council would be the body that considers certification of the EIR and approval of the project. 3.3 PROJECT BACKGROUND AND HISTORY 3.3.1 WASTEWATER QUALITY CONTROL FACILITY The Manteca WQCF has expanded several times since operations began in 1959. From 1986 to 1988, a major expansion to the plant known as Phase I was constructed. The Phase I expansion project included the construction of secondary treatment facilities, anaerobic sludge digesters, sludge drying beds,a chlorine disinfection system, and an outfall to the San Joaquin River. Design capacity of the plant following the Phase I project was 5.45 million gallons per day(mgd) average dry-weather flow(ADWF).A Phase 11 expansion project was constructed in 1992-1993 and resulted in the addition of a primary sedimentation basin, a secondary clarifier, and four sludge drying beds, increasing capacity to 6.95 mgd ADWF. Manteca WQCF and Collection System Master Plans EIR EDAW City of Manteca 3-1 Project Description