Item 41 - Amendment Application No. 2022-01 and Appeal Nos. 2022-01 and 2022-02

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Community Plan Exemption Checklist City of Santa Ana Gary Avenue Business Park Project hazardous materials would routinely be needed for fueling and servicing construction equipment on the site. These types of materials are not acutely hazardous, and all storage, handling, use, and disposal of these materials are regulated by federal and state regulations that are implemented by the City of Santa Ana during building permitting for construction activities. As a result, no new impacts related to hazardous material impacts during construction would occur. Operation Operation of the proposed Project includes activities related to a speculative light industrial building. Although the Project would likely utilize common types of hazardous materials, normal routine use of these products pursuant to existing regulations would not result in a significant hazard to the environment or workers within or in the vicinity of the Project. Per the GPU EIR, both the federal and state governments require all businesses that handle more than a specified volume of hazardous materials to submit a business plan to a regulating agency. Specifically, any new business that meets the specified criteria must submit a full hazardous materials disclosure report that includes an inventory of the hazardous materials generated, used, stored, handled, or emitted; and emergency response plans and procedures to be used in the event of a significant or threatened significant release of a hazardous material. The plans and permits are reviewed by the Fire Department and Building and Safety Departments, as part of project permitting procedures. Therefore, the Project would result in no new impacts related to the routine transport, use, or disposal of hazardous materials. b) Create a significant hazard to the public or the environment through reasonably foreseeable upset and accident conditions involving the release of hazardous materials into the environment? No New Impact. Construction The Project includes the demolition of an existing buildings and construction of a new, slightly larger light industrial building. A Phase I Environmental Site Assessment was conducted for the Project to assess potential hazardous impacts, included as Appendix H. The assessment identified no evidence of recognized environmental conditions on the site. The only identified issues concern groundwater contamination from offsite sources. As detailed in the Project Description, the Project is anticipated to excavate to approximately 7.5 feet below the existing grade. The Preliminary Geotechnical Investigation (Appendix E) identified groundwater at 12 feet below grade and the depth to high groundwater is 10 feet below grade. Thus, construction of the Project is not anticipated to encounter contaminated groundwater. However, should groundwater be encountered, existing Regional Water Quality Control Board (RWQCB) measures would be implemented through the City's typical construction permitting process. To further avoid an impact related to an accidental release of hazardous materials into the environment, the use of best management practices (BMPs) during construction would be implemented as part of a Stormwater Pollution Prevention Plan (SWPPP) as required by the National Pollution Discharge Elimination System General Construction Permit. Implementation of an SWPPP would minimize potential adverse effects to workers, the public, and the environment. Construction contract specifications would include strict on -site handling rules and BMPs that include, but are not limited to: • Establishing a dedicated area for fuel storage and refueling and construction dewatering activities that includes secondary containment protection measures and spill control supplies; • Following manufacturers' recommendations on the use, storage, and disposal of chemical products used in construction; • Avoiding overtopping construction equipment fuel tanks; Properly containing and removing grease and oils during routine maintenance of equipment; and Properly disposing of discarded containers of fuels and other chemicals. Operation The Project would include operation of a speculative light industrial building. As discussed above, operational use of hazardous materials on the Project site would be subject to federal, state, and local requirements that 64