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Phase II Environmental Site Assessment Report Satellite Apartments 530 N.Stanislaus Street APN 139-224-090 Page 6 None of the VOCs concentrations collected from the sub-slab soil gas sampling locations were detected above their respective calculated soil vapor screening levels, except for chloroform at Sub-2. Chloroform was detected at 7.2 µg/m3 which is above the calculated soil vapor screening level of 4.0 µg/m3. It is Condor's opinion that it is unlikely that this concentration poses a significant risk to current Site occupants in indoor air because the default attenuation factor of 0.03 is overly conservative. However, for a greater certainty of the Site-specific risk associated with chloroform,indoor air and ambient air sampling could be conducted to evaluate actual chloroform concentrations in indoor air. None of the detected OCPs in the collected surface soil samples detected exceeded their respective human health risk screening levels except for chlordane and dieldrin in three (3) of the collected samples. Furthermore, three of the chlordane results exceeded the Title 22 hazardous waste threshold of 2.5 mg/kg. The exposure pathway associated with OCPs is ingestion. The alternative method of isolating the exposure pathway when the remediation of hazardous chemicals (i.e. removal and proper disposal of contaminated soil) is not practical or safe is by encapsulating the material in place (i.e. asphalt/concrete cap, hardscape landscaping). In summary, it is Condor's opinion that no further environmental investigation is warranted at the Site related to potential vapor encroachment condition. However, for greater certainty of the Site-specific risk associated with chloroform, indoor air and ambient air sampling could be conducted to evaluate actual chloroform concentrations in indoor air. Condor recommends that exposed soil surrounding the existing apartment complex be encapsulated to reduce the exposure pathway to the OCP contaminant soil. 7.0 LIMITATIONS The scope of work for this report is intended to provide a limited review of certain information related to the potential presence of contamination at or beneath the Site. This report is not intended to eliminate all risk of the subject property bearing some degree of environmental liability. Condor cannot and will not warrant or certify that the Site is free of contaminants because it is impossible to know if such a condition exists. Although risks can never be eliminated, more detailed and extensive investigations yield more information. This information may help facilitate management of risks. This project was performed in general conformance with the Work Plan, dated April 11, 2024. The scope of work for this project was limited to an evaluation of environmental concerns associated with the potential presence of hazardous materials in conjunction with current and previous activities on a property and did not include other services that are not described in this report. Specifically excluded from the scope of work are: (1)the evaluation of the site for the presence of asbestos and radon,(2)a survey of the site for wetlands or rare and endangered species, and(3)a survey of the site for historical or cultural resources. Condor has completed this Phase 11 Environmental Site Assessment as an independent contractor. This report was performed with the customary state of the practice and the prevailing standard of care for completing such reporting in California at this time. Condor shall not be subject to any expressed or implied warranties whatsoever. Land use, site conditions (both on-site and off-site) and other factors will change over time. Site activities and regulations beyond our control could change at any time after the completion of this report. Our observations,findings and opinions can be considered valid only as of the date of the site visit or sampling event. The property owner is solely responsible for notifying all governmental agencies, and the public at large, of the existence, release, treatment, or disposal of any hazardous materials observed at the project i,i CONDOR