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i 1 4 " Tom Gau, Senior Civil gineer May 4, 1998 Page 4 I Stockton's adopted Wastewater Treatment Master Plan points out that certain unit processes at the RWCF are approaching their functional capacity (Metcalf and Eddy 1987). Engineering-Science also points out in their 1992 Secondary Treatment Facilities Expansion Study that the actual - wastewater treatment capacity is estimated to be 38 million gallons per day i (MGD) of average dry weather flow. The present amount of average dry f weather flow being treated at the RWCF is approximately 30 MGD during the non-canning season and 38 MGD during the canning season. The City has initiated the construction of a six staged plant expansion program at the RWCF to increase the overall treatment plant capacity. Under the expansion program, the RWCF would be capable of treating 42 MGD by December, f 2003. 1 Existing Collection System: The proposed project area is not currently serviced by the Stockton sewage collection and treatment system. The s nearest point of connection is an existing 33" gravity sewer located north I and west of the project site (at Arch-Sperry Road and Alitalia Ave.). + The 33" sewer, to which this project site would connect, is at the upstream end of Collection System No. 8. This system, also referred to as the south Stockton Sewer, conveys much of the sewage from south Stockton to the RWCF. Cordrnuec Impacts on Treatment Plant Capacity Because of the limited capacity of the existing treatment plant,'the City f cannot guarantee adequate capacity to serve the increasing wastewater,: demands of the approved but unconstructed projects plus this proposed ,project: As a result, the projected demand for wastewater treatment represents a significant potential adverse impact. This impact, however, can be reduced to a less-than-significant level by implementing the proposed mitigation measures. These measures include the payment of the appropriate sanitary sewer connection fees to the City which would be used to construct the planned RWCF Staged Expansion Project as well as other improvements. Level of Significance: Potentially Significant Mitigation Measures: The owners, developers and/or successors-in-interest ` shall be responsible for the following mitigation measures: 1. Prior 'to issuance of building permits, pay the applicable sewer, connection fees required for Improvements to the Stockton Regional Wastewater Control Facilities. } Significance After Mitigation: Less than Significant Miti ation lm lementation and Monitorin : w implementation and Monitoring: The Community Development Department