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Phase I Environmental Site Assessment Proposed Mountain House Preschool and Multi-Purpose Buildings 54 West Conejo Court,Mountain House,CA Page 2 1.2 USER RELIANCE,LIMITATIONS,AND EXCEPTIONS The scope of this project was presented in our proposal and contract number 8212A dated November 23, 2020 and subsequently approved by the Client(see Appendix F for Scope of Work). This ASTM Phase I ESA is thorough,but it is not intended to identify all potential concerns,or to eliminate all risk of the subject properties 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,thereby further minimizing risk. Land use, Site conditions(both on-site and off-site),and other factors will change over time. Site activities and regulations beyond Condor's 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/reconnaissance, December 2, 2020. If any changes are made or errors found in the information used for this report,the interpretations and conclusions contained herein shall not be considered valid unless the changes or errors are reviewed by Condor and either appropriately modified or re-approved in writing. This report should not be relied upon after 180 days from the date of issuance (ASTM E 1527-13, Section 4.6). 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 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. Condor,as an independent contractor,has completed the ASTM Phase I ESA in accordance with the ASTM guidelines and with the customary state of the practice and the prevailing standard of care for completing such assessments for the state of California at this time. Condor shall not be subject to any express or implied warranties whatsoever. This report and other instruments or service are prepared and made available for the sole use of the officers and representatives of the Client.The contents thereof may not be used or relied upon by any other person(s) without the expressed written consent and authorization of the Client and Condor. 1.3 SIGNIFICANT ASSUMPTIONS An assumed northeasterly groundwater gradient direction was utilized when assessing the potential risk posed to the Site from off-site locations. This assumed groundwater gradient is based upon groundwater monitoring reports conducted as part of the Shell Pipeline remediation to the southwest. It should be noted, however, that groundwater gradients in this area have fluctuated significantly over time, and current gradient directions may not represent historic gradients. 1.4 SPECIAL TERMS AND CONDITIONS None noted. 2.0 SITE DESCRIPTION This section provides a brief description of the Site and surrounding areas. More information regarding the Site and its description,including historical data, is included in Sections 4.0 and 5.0. iia CONDOR