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Phase II Environmental Site Assessment Report Yosemite Senior Housing 309 W.Yosemite Avenue and 105 Sycamore Avenue APNs 217-210-100 and 217-210-110 Page 7 Based upon analytical results of PCE in soil gas beneath the Site,which exceeds the conservate attenuated screening level, it is Condor's opinion that a vapor intrusion risk may be present at the Site. Further, although a dry-cleaning operation is known to have a documented release of PCE within 550 feet of the Site, no PCE was detected in any of the soil or groundwater samples that were submitted for laboratory analyses. Consequently, Condor recommends further investigation, such as a passive soil gas survey, to evaluate if the formal printing operation was a potential source of on-Site contamination. Any future development could mitigate vapor intrusion by incorporating a vapor barrier/venting system as part of the construction. 6.0 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 12, 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 II 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 site,either before or during performance of Condor's services.Condor assumes no responsibility or liability whatsoever for any claim, loss of property value, damage, or injury which results from pre-existing hazardous materials being encountered or present on the project site, or from the discovery of such hazardous materials. The contents thereof may not be used or relied upon by any other person(s) without the express written consent and authorization of Housing Authority of the County of San Joaquin(Client)and Condor. o ILA CONDOR