SU0011836 - Laserfiche WebLink

Home Browse Search

Draft Supplemental Environmental Impact Report Page IV.G-22 Forward Inc. Landfill 2018 Expansion Project Implementation of these procedures and protections would reduce the impact to a less-than- significant level. Mitigation Measure G.6: None required. Impact G.7:Potential decreases in groundwater resources due to loss of recharge surface area. The proposed landfilling over the currently unpaved land in the expansion areas would remove that land from rainwater recharge to local aquifers, resulting in a loss of recharge.As discussed in the setting section,groundwater resources in the Central Valley have historically suffered from overdrafting—where more groundwater is removed than is naturally recharged into the aquifers. A regional groundwater recharge program is being considered by San Joaquin County Flood Control District and Water Conservation District(SJCFCWCD)for conjunctive use. Such groundwater storage and recharge programs are designed to store excess water for recharge use during the dry summer months.This introduced recharge would not occur during the seasonal high groundwater of the end of the wet weather cycle, and would not result in groundwater elevations that would be higher than historic levels. The following measures are proposed as part of the project: • Continued recharge of extracted and treated groundwater. In the GeoLogic 2017 Corrective Action Monitoring Workplan the construction of a storage basin for treatment system effluent that would subsequently infiltrate and recharge the groundwater is proposed. Although the recharge program does not specifically address the loss of infiltration within the expansion area it is designed to generally meet the intent of the water district to minimize overdrafting. The impact from the loss of direct infiltration over the expansion area is considered to be less than significant. Mitigation Measure G.7:None required. Impact G.S. Increased sedimentation during the construction phase of the relocation of the South Branch of South Littlejohns Creek. Construction and operation of the relocated South Branch of South Littlejohns Creek channel could result in additional sedimentation and surface water quality impact during the construction phase and shortly thereafter if appropriate BMPs to minimize such impact are not adhered to. Constructing the Creek alignment during the dry season would be minimize any sedimentation and water quality impact. Mitigation Measure G.8: Implement the proposed Questa Engineering design specifications and standard construction BMPs during the construction phase of the South Branch of Sough Littlejohns Creek realignment. Construction of the realigned creek channel shall be implemented during the dry season.