Environmental Impact Statement - Sonoma Land Trust

California Department of Fish and Game
U.S. Fish and Wildlife Service
Section 3.9. Hazardous Substances and Waste
• potential redistribution of contaminants from the Connector Channel; and
• potential exposure to contaminants during the demolition of structures.
Thresholds of Significance
Criteria used for determining the significance of a potential hazardous substance
and waste impact are based on the State CEQA Guidelines and professional
standards and practices. Impacts were considered significant if an alternative
would:
• Create a potential public health hazard; or
• Involve the release of onsite contaminants or imported contaminants that
pose a hazard to human, animal, or plant populations in the area affected.
Impacts and Mitigation Measures
No-Action Alternative
Under the No-Action Alternative, the proposed wetland restoration site would
remain in its present condition. Prior to transfer of the property south of the rail
line to CDFG, existing leases would be terminated, all current agricultural and
recreational activities would cease, and the land would be managed as seasonal
wetlands and saturated grasslands. Property transferred to USFWS would be
similarly treated, though agricultural operations wouldmay be allowed to
continue through their lease terms. Impacts associated with thesubject to a
Special Use Permit. Hhandling of hazardous materials, such as construction fuels
and lubricants, or from the excavation and placement of dredge materials,
required to operate heavy equipment would not occur under the No-Action
Alternativebe required for maintenance and agricultural activities.
As part of the land transfer process, SLT would have to develop an alternate
Corrective Action Plan for the treatment of contaminated soils at the Sports Club
shooting range site since placement of these soils within the core of a new flood
control levee would not occur. Soil remediation would be performed consistent
with the requirements of the RWQCB’s Spills, Leaks, Investigations, and
Cleanup Program; however, specific actions and remedial measures required by
an alternate Corrective Action Plan are unknown at this time. Uncontrolled
residual contamination could pose a health risk to future site users (hunters,
recreationists) as well as wildlife and would be a significant impact. With
implementation of Mitigation Measure WQ-MM-1, this impact would be
considered less than significant.
Sears Point Wetland and Watershed Restoration
Project Final Environmental Impact
Report/Environmental Impact Statement
3.9-9
April 2012