2014-069 - Final Environmental Impact Report No. 2014-01

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HARBOR BLVD. MIXED USE TRANSIT CORRIDOR PLAN FINAL FIR CITY OF SANTA ANA 5. Environmental Analysis HAZARDS AND HAZARDOUS MATERIALS There is one open LUST case onsite: Oasis Drinking Waters at 1506 North Clinton Street in Santa Ana. A release of gasoline affected the drinking water aquifer. Cleanup was conducted in 2011 and 2012 via soil vapor extraction, pumping and treating of groundwater, and air sparging.2 The case is open; verification monitoring was ongoing in early 2013. One UST with the associated fuel dispenser and piping were removed from the site in 1997. A site workplan written in 2005 does not document subsequent removal of additional tanks, dispensers, and /or piping (Frey 2005), suggesting that the release stopped no later than 1997. Some of the EMI listings document ongoing emissions. Whether emissions have stopped or are ongoing is not documented in the EDR report; therefore, as a conservative estimate, it is assumed that all 17 EMI listings document ongoing emissions. The 16 closed LUST cases, 3 CHMIRS sites, 3 ERNS sites, and 1 OPS site all document past hazardous materials releases. All of the hazardous materials releases documented in Table 5.6 -1 are known to regulatory agencies. Apart from the 17 EMI listings, the only listing documenting further required action is the open LUST case. Therefore, the project would not cause a substantial hazard to people or the environment related to listed hazardous materials sites onsite. Due to the fact that there are numerous sites within and in proximity of the project area that have been listed in a hazardous materials database, the potential for impacts exists from hazardous substance contamination. Individual development projects that would be accommodated under the Harbor Boulevard Mixed Use Transit Corridor may be impacted by hazardous substance contamination remaining from historical operations on a particular site that may pose a significant health risk resulting a significant impact. Hazardous substance contaminated properties are regulated at the federal, state, and local level, and are subject to compliance with stringent laws and regulations for investigation and remediation. For example, compliance with the CERCLA, RCRA, California Code of Regulations, Title 22, and related requirements would remedy any potential impacts caused by hazardous substance contamination. Future development would be required to comply with these existing laws and regulations. In addition, mitigation has been incorporated to ensure that contaminated sites are remediated prior to construction. 5.6.4 Cumulative Impacts Implementation of the Harbor Boulevard Mixed Use Transit Corridor would not combine with other cumulative development in accordance with the City's General Plan (see Section 4.4, Assumptions Regarding Cumulative lVacts, in Chapter 4) to result in cumulatively considerable impacts related to hazards and hazardous materials. As outlined in the previous regulatory setting discussion in Section 5.6.1, Enrimnmental Setting, numerous federal, state and local laws and regulations ensure that hazardous materials and wastes are used, stored, transported, and disposed of appropriately. Similar to the proposed project, development of other planned projects within the City of Santa Ana, in accordance with the City's General Plan, would be required to adhere to the existing local, state, and federal laws and regulations governing the use, storage, transport, or disposal of hazardous materials and waste. 2 Air sparging is the injection of dean air into a site where groundwater is contaminated with VOCs. The VOCs evaporate into the injected air, which is then vented out for treatment Page 5.6 -22 PlaceWorkr