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INTERIM LAND DISPOSAL OF TREATED WASTEWATER Because there is not sufficient wastewater treatment disposal capacity and river discharge has been permitted but has not yet begun, land disposal of tertiary treated wastewater is proposed to serve a portion of the College Park project on an interim basis until surface-water discharges begin.This interim land disposal would occur on ' approximately 30 acres(137-acre Pombo parcel) east of Mountain House Parkway just south of Byron Road(see Figure 3-14).Tertiary treated wastewater would be applied on animal feed crops(alfalfa) at the"agronomic"rate (the rate at which water can be applied without ponding and with minimal percolation to the groundwater). A detailed study(Irrigation Feasibility Study for the Pombo Property)has been completed to confirm that the proposed interim land disposal would provide enough disposal capacity to serve buildout of 377 acres of the GNK,LLC portion of the College Park area(or an equivalent amount of College Park development, subject to the agreement of GNK,LLC,which controls the Pombo property).This irrigation feasibility study is discussed in Section 4.5, "Public Utilities,"and included in its entirety as Appendix F of this Draft EIR.The total Tentative Map acreage(546.5 acres)could not be served by interim land disposal.Additional project development beyond this disposal capacity would be delayed until such time as surface-water discharges associated with the W WTP begin and/or additional land disposal area is obtained.For the interim land disposal, a new interim sewer force main would be developed from the existing W WTP to the interim land disposal site along Mountain House Parkway, as shown in Figure 3-14. 3.10.4 ROADS Public roadway access to the College Park site is currently provided by Mountain House Parkway,Grant Line Road, and Von Sosten Road.Freeway access is provided by I-205 via the I-205/Mountain House Parkway interchange.Two off-site roadway improvement projects have already been approved within the vicinity of the College Park project.These include the I-205/Mountain House Parkway Interchange PSR,which involves interchange improvements,and the Mountain House Parkway Improvement Project,which involves widening Mountain House Parkway to four lanes from the I-205 interchange to Mascot Road to serve increased traffic on Mountain House Parkway associated with Specific Plan I. These two improvement projects are anticipated to be constructed by 2007. Under the College Park project and consistent with the MHMP, Grant Line Road would be widened from two to four lanes from Hansen Road to I-205, and Mountain House Parkway would be widened from four to six lanes from the I-205 interchange to Mascot Road,to accommodate project traffic (Figure 3-15). As College Park properties develop, frontage improvements would be provided on the south side of Grant Line Road and the west side of Mountain House Parkway along the project boundary. To address residents' concerns about access and traffic safety, a frontage road is proposed along the northern edge of Grant Line Village(Figure 3- 16).New traffic signals would be installed along Mountain House Parkway at Central Parkway,Von Sosten Road, and a secondary project entrance between Von Sosten Road("T"intersection only) and Grant Line Road. New traffic signals would also be installed along Grant Line Road at Great Valley Parkway, Central Parkway, and DeAnza Boulevard. To address concerns about cut-through traffic,Von Sosten Road would not be extended into the project site. Under the College Park project and consistent with the MHMP, a fully developed on-site roadway system would be constructed.This would include the extension of Central Parkway through the College Park site to Mountain House Parkway,as shown in Figure 3-15, and the development of collector and neighborhood streets. This alignment is needed to provide frontage for the Delta College site.It is likely that street improvements would be phased according to the pattern of development. The cost for the above roadway improvements would be paid up front by the College Park developers. College Park at Mountain House Specific Plan III Draft EIR EDAW San Joaquin County 3-41 Project Description