Environmental Impact Statement - Sonoma Land Trust

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California Department of Fish and Game U.S. Fish and Wildlife Service Section 3.9. Hazardous Substances and Waste The federal reportable spill quantity for petroleum products, as defined in the EPA’s CFR (40 CFR 110) is any oil spill that (1) violates applicable water quality standards, (2) causes a film or sheen upon or discoloration of the water surface or adjoining shoreline, or (3) causes a sludge or emulsion to be deposited beneath the surface of the water or adjoining shorelines. If a spill is reportable, the contractor’s superintendent shall follow the guidelines in the plan. immediately notify the Sonoma County Department of Environmental Health (SCDEH) and DTSC, which have spill response and clean-up ordinances to govern emergency spill response. A written description of reportable releases shall be submitted to the RWQCB. This submittal shall include a description of the release, including the type of material and an estimate of the amount spilled, the date of the release, an explanation of why the spill occurred, and a description of the steps taken to prevent and control future releases. The releases shall be documented on a spill report form. If a reportable spill has occurred and results determine that project activities have adversely affected surface or groundwater quality in excess of water quality standards, a detailed analysis shall be performed by a Registered Environmental Assessor to identify the likely cause of contamination. This analysis shall conform to American Society for Testing and Materials (ASTM) standards, and shall include recommendations for reducing or eliminating the source or mechanisms of contamination. Based on this analysis, SLT and/or their contractors shall select and implement measures to control contamination, with a performance standard that water quality shall be returned to baseline conditions. These measures shall be subject to approval by the SCDEH and DTSC. Conclusion: Less than Significant with Mitigation. Full-Tidal Alternative The Full-Tidal Alternative would also require construction activities to implement the proposed restoration components. Although additional structures would be constructed, this increase in construction activity would not have an effect on theresult in a slightly greater potential for accidental releases of hazardous materials. As such, the potential for accidental spills to occur during the construction period would be the same forsimilar to the Full-Tidal Alternative as they are for the Project. Implementation of Mitigation Measure HAZ-MM-1 would reduce this impact to a less-than-significant level. Conclusion: Less than Significant with Mitigation. Sears Point Wetland and Watershed Restoration Project Final Environmental Impact Report/Environmental Impact Statement 3.9-11 April 2012
California Department of Fish and Game U.S. Fish and Wildlife Service Section 3.9. Hazardous Substances and Waste Impact HAZ-2: Exposure of Humans, Plants, or Wildlife to Contaminants as a Result of Black Point Sports Club Remediation Activities – Excavation Proposed Project Studies by Northgate Environmental Management and Camp Dresser and McKee, Inc. in 2003 and 2004, respectively, estimated approximately 8,300 tons of soil on the Black Point Sports Club may need to be excavated from an area approximately 300 feet by 650 feet within the shooting range perimeter (Northgate Environmental Management 2006). A preliminary and limited soil investigation was performed at the Sports Club by Harris & Lee Environmental Sciences in 2003 (Harris & Lee 2003). This investigation identified the occurrence of lead, arsenic, and polynuclear aromatic hydrocarbons (PAHs) in the soil in the shallow zone extending from the surface to five inches downwards. (Northgate Environmental Management 2006). A comprehensive soil and groundwater investigation was conducted by Northgate in 2006 to assess the distribution of chemicals at the shooting range. The results of this study verified that soils in the vicinity of the Black Point Sports Club contain lead, arsenic, and various PAHs primarily derived from shotgun lead shot and clay targets (Wetlands and Water Resources 2007). 13 out of 25 samples contained elevated (above background) levels of lead. Four samples contained lead in high enough concentrations (above 1,000 mg/kg) to be considered hazardous waste. Arsenic concentrations were found to be consistent with regional background concentrations, and therefore are not of concern (Northgate Environmental Management 2006). The Water Board requested development of a Corrective Action Plan for remediating the skeet range to address residual lead and PAHs that are contained in shallow soil at the Sports Club. A Corrective Action Plan (Northgate Environmental Management 2006) characterizing soil contaminant levels and outlining appropriate remediation within the context of restoration was submitted to the San Francisco Bay RWQCB in December 2006 and was approved in November 2008. The Corrective Action Plan showed soil contamination levels in the skeet range to be beneath the legal threshold for contamination when averaged across 12,000 cubic yards of material at the skeet range. While this level is not considered a threat to animals and wildlife, there is the potential for the transport of contaminants into more sensitive wetland areas as a result of the Project that requires the excavation and isolation of contaminated sediments. In total, the volume of affected soil proposed for removal is approximately 12,000 cubic yards (measured as in-place volume). This is a potentially significant impact. To reduce this impact to a less than significant level, SLT would implement will Mitigation Measures HAZ-MM-2 and HAZ-MM-5a. Sears Point Wetland and Watershed Restoration Project Final Environmental Impact Report/Environmental Impact Statement 3.9-12 April 2012
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Sears Point Wetland and Watershed R
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Sears Point Wetland and Watershed R
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Contents List of Tables ...........
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California Department of Fish and G
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Executive Summary This summary prov
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Table ES-1. Summary of Impacts and
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Table 1-1. List of Local, State, an
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Table 2-2. Action Alternatives Cons
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Chapter 3 Affected Environment and
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Section 3.1 Geology, Soils, and Pal
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Section 3.2 Surface-Water Hydrology
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Section 3.3 Water Quality Introduct
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Table 3.5-2. Special-Status Species
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Section 3.15 Environmental Justice
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Chapter 4 Consultation and Other Re
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Sonoma Land Trust Chapter 4. Consul
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Chapter 5 Public Involvement and Sc
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Environmental Impact Statement - Sonoma Land Trust

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