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2.0 INTRODUCTION CAC was retained by Signature Homes, Inc. (Signature) to conduct a Phase I environmental site assessment (ESA) of the property identified as the Machado Property near Manteca, California (the Site). Work for this project was conducted pursuant to Signature's request on September 6, 2022. This ESA presents a summary of the conditions at the Site. Figure 1 is a site location map showing the location of the Site with respect to the site vicinity. Figure 2 is a site plan showing approximate boundaries of the Site, improvements, adjacent site use, and salient features observed during the site visit. Copies of photographs taken during the site visit are included in Appendix A. This report was prepared under the direction of Mr. Steve Miller, of Signature. The report will be used for the purposes of providing advice to the Senior Management of Signature. 2.0 METHODOLOGY This Phase I ESA was performed in accordance with the American Society for Testing and Materials (ASTM) Standard Practice for Environmental Site Assessments: Phase 1 Environmental Site Assessment Process, ASTM Designation E 1527-13. Title 40 of the Code of Federal Regulations, Part 312 specifies standards and practices for "all appropriate inquiries" required to obtain protection from liability under the federal Comprehensive Environmental Response, Cleanup and Liability Act (CERCLA). 40CFR 312.11(a) identifies a Phase I ESA completed in accordance with the E 1527-13 practice as one way to achieve compliance with requirements of the "All Appropriate Inquiries" rule. The objective of this Phase I ESA Update was, to the extent feasible pursuant to the process outlined in E 1527-13 and the approved scope of work for this project, to identify Recognized Environmental Conditions (RECs) or Historic Recognized Environmental Conditions (HRECs). As defined in E 1527-13, a REC is: "...the presence or likely presence of any hazardous substances or petroleum products on a property under conditions that indicate an existing release, a past release, or a material threat of a release of any hazardous substances or petroleum products into structures on the property or into the ground, groundwater, or surface water of the property. The term includes hazardous substances or petroleum products even under conditions in compliance with laws. The term is not intended to include de minimis conditions that generally do not present a threat to human health or the environment and that generally would not be the subject of an enforcement action if brought to the attention of appropriate government agencies. Conditions determined to be de minimis are not RECs. " The scope of services did not include overall environmental regulatory compliance or sampling 2-1