ARCHIVED REPORTS_DRAFT ENVIRONMENTAL IMPACT REPORT

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The location of chemical storage buildings,where polymers and laboratory chemicals would be offloaded and stored, is shown in Exhibit 3-4. Procedures for handling hazardous materials would not change or otherwise be affected with implementation of the project. Fuels and laboratory chemicals would continue to be handled in the same manner. All training, safety, and emergency response provisions would remain in effect and apply to areas of the plant affected by implementation of the WQCF Master Plan. In addition, all training, safety, and emergency response provisions applicable to proposed wastewater collection system and recycled-water distribution system pipelines would remain in effect. Together,the Manteca WQCF's procedures manual and HMMP define employee training,protective equipment use, and other procedures that provide an adequate basis for properhandling of hazardous materials and mitigate this potential impact sufficiently. Implementation of the proposed project would not increase hazardous materials risks to plant workers,the general public,the collection system, or WQCF environment. Rather,the risk of release or exposure to acutely hazardous materials would be reduced with proposed project implementation,because of the reduction in the use of chlorine and sulfur dioxide resulting from conversion to UV disinfection. Furthermore,the WQCF managers would continue to enforce existing safety practices at the new facilities and new facility design and construction would require adherence to applicable building codes and fire codes. Construction of pipelines for the wastewater collection system and recycled-water distribution system and WQCF facilities would involve the storage,use, and transport of hazardous materials. WQCF operation would also involve the routine transport of hazardous materials on and off the site. Transportation of hazardous materials on area roadways is regulated by the CHP and Caltrans,whereas use of these materials is regulated by DTSC, as outlined in Title 22 of the CCR. The City of Manteca,project consulting engineers, and project contractors would be required to use, store, and transport hazardous materials in compliance with federal, state, and local regulations during project construction and operation. Facilities that would use hazardous materials on-site after the project is constructed would be required to obtain permits and comply with appropriate regulatory agency standards designed to avoid hazardous waste releases. Therefore,the project would be consistent with relevant City general plan policies that regulate the use of hazardous materials (Policies S-P-16 and S-P-17). Because the City would ensure compliance with existing hazardous material regulations, impacts related to creation of significant hazards to the public through routine transport,use, disposal, and risk of upset would be unlikely with project development. Additionally,because adequate safety procedures and precautions are in place and would continue with implementation of the Manteca WQCF and Collection System Master Plan Updates,the potential for accidental release and exposure to hazardous materials would be considered less than significant. IMPACT Hazards and Hazardous Materials—Emission or Handling of Hazardous Materials or Waste Near a 4.6-2 School. Existing safety practices and health and safety programs currently in effect would continue to be implemented with expansion of the Manteca WQCF and Collection System Master Plan Updates. Because adequate safety procedures and precautions are in place and would continue with implementation of the Manteca WQCF and Collection System Master Plan Updates, and the project would reduce the use of acutely hazardous materials at the WQCF, this impact would be less than significant. In general, accident hazards and public health risks occur if industries using acutely hazardous materials are situated close to receptors such as schools,hospitals,residential areas or day care centers. Residential areas exist within 0.5 mile of the WQCF,whereas the nearest school and hospital are located approximately 0.75 mile from the WQCF. Sensitive receptors would not be affected by the proposed collection system and recycled-water distribution pipelines because the pipelines would be buried underground and would not convey hazardous materials. Because the handling and storage of acutely hazardous materials(i.e., chlorine and sulfur dioxide) at the Manteca WQCF does not occur within one-quarter mile of off-site receptors, implementation of the proposed project would significantly reduce the use of acutely hazardous materials, and adequate safety procedures and precautions are in place for handling hazardous materials, impacts on off-site sensitive receptors would be less than significant. EDAW Manteca WQCF and Collection System Master Plans EIR Hazards and Hazardous Materials 4.6-12 City of Manteca