MO 2014-008 - Laserfiche WebLink

Home

• P1N2013.00045;San Leandro Downtown Technology Campus/Westlake Development Pamreza LW.;1333 Martinez Street January 2014 Mitigated Negative Declaration • o Soil samples will be collected from the identified area and analyzed for the likely COPC, depending on the suspected type of contamination. The sampling strategy will be discussed with a State environmental regulatory agency prior to the initiation of the • sampling activities. Analytical results collected from the suspected source will be compared to the health-based screening levels and results discussed with a State environmental regulatory agency. If the levels are below the relevant health-based screening levels and the State environmental regulatory agency concurs,no additional • action may be necessary. o If the soil contains COPCs at levels that exceed the relevant health- �. • based screening levels, or if the State regulatory agency concludes that an unacceptable risk to construction worker or future residents may be present, then management measures, such as the following, will be undertaken: • Remove the impacted soil and dispose of off-Site; • Install a cap to prevent contact with the contamination; • Install a physical barrier for vapors such as a vapor barrier or passive venting system,to prevent the accumulation of • vapors in indoor environment; • Stockpile soil and aerate on-Site, or in a staging area as may be appropriate, in compliance with all applicable laws and regulations; • Conduct in situ bioremediation measures; or • • Implement liquid or vapor extraction measures. • The appropriateness of one of the above management measures over another will depend on many factors, such as the type of constituent detected,the size of the identified impacted area; and the estimated cost of implementing the remedy. Results of the sampling activities and the proposed course of action,e.g., no action necessary, soil excavation and off-site disposal, on-site treatment and soil reuse, shall be reported to a State environmental regulatory agency and the contractor shall obtain concurrence before implementing the remedial measures. Construction activities in the specific area where the unknown conditions were identified will resume following the completion of the additional sampling activities and the implementation of any required responses. Any cleanup or remediation shall be required to meet applicable federal, state and local laws, regulations and requirements. • • Imported Fill: To minimize the potential introduction of contaminated • fill, all imported fill shall have adequate documentation so it can be • verified that the fill source is appropriate for the site's intended use. • Documentation shall include detailed information on previous land use of the fill source, any Phase I Environmental Site Assessments performed and the findings, and the results of any analytical testing •