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RESPONSE TO COMMENTS FROM: San Joaquin County Public Health Services 1. As discussed in Section 2.6 of the EIR, the project would include construction of an impoundment for storm water runoff at the southeast portion of the project site. This proposed impoundment would be located in the area currently occupied by a small drainage impoundment that captures storm water runoff from the surrounding agricultural land as well as a portion of the storm water runoff from the town of Clements. As with the existing impoundment, the proposed impoundment would receive surface runoff from the project site as well as storm water runoff from the town of Clements. The applicant has indicated that the 10-acre area for this impoundment could be deeded to the County for recreational uses, such as a public park (subject to County approval). Mitigation 8, Section 3.2.3, provides provisions for the protection of the root zone of crops from soil saturation due to shallow groundwater. The specific mitigations to protect the root zone are subject to approval by the U.S. Department of Agriculture, Soil Conservation Service. 2. The California Regional Water Quality Control Board (RWQCB), Central Valley Region, indicated that a Waste Discharge Permit would be required if excavation into the groundwater table occurred, and water from the excavation was discharged to the surface. The applicant has stated that they do not expect to encounter groundwater during excavation activities, but if they did, they would dewater prior to continuing excavation. The RWQCB has said that they would prefer that any water from the excavation be contained on site. However, if water from the excavation were discharged to surface waters, a National Pollution Discharge Elimination System (NPDES) permit, issued by the RWQCB, would be required. Mitigation 6, Section 3.2.3 of the EIR has been revised to reflect this requirement. 3. Mitigation 4, Section 3.2.3 of the EIR has been revised to reflect approval by the San Joaquin County Department of Public Works. 4. Section 3.8.1 of the EIR under "Proposed Quarry Site" has been changed to indicate that an application has been received for residential development of the bluff area. Although the application had not been received at the time the Draft EIR was prepared, the noise analysis assumed receptors (residences) in the area of the proposed development (Receptor 3 and 4, Figure 3.6-2). The potential noise impact to this area was determined and presented in the EIR; however, modifications to the mitigation measures (see Section 3.6.3) have been made based upon information contained in the development application. \ 5. The EIR has addressed the potential impacts to water quality from excavation into the groundwater table. Mitigation measures have been recommended in the EIR in the event that excavation extends below the groundwater table (see Section 3.2.3). It is not the intent of the EIR to determine the relative value of water quality compared to that of the aggregate resource. That decisions can be left to the lead agency, based on the identified impacts. 6. The RWQCB has indicated that they would not issue a Waste Discharge Permit for either the relocation of the bridge or the construction of the storm water