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1.0 INTRODUCTION AND PROPOSED DEVELOPMENT: 1.1 Description of site: The project consists of two legal lots consisting of three Assessor's Parcels. The subject Assessor's Parcel numbers are 063-070-61, 62, and 63. The project is in an agricultural neighborhood. The parcels are zoned AG-40. 1.2 Description of Proposed Development: The purpose of this project is to create two parcels and one Homesite Parcel from the two existing legal parcels as reflected on the Tentative Map in the Appendix. In accordance with the San Joaquin County Development Title, this Surface and Subsurface Contamination Report (SSCR) is being submitted for approval. This report will investigate the property for visual or historical environmental contamination based on field observation, interviews with the owner, and County records. (This SSCR includes no chemical analysis). 1.3 Parcel location map: (See Appendix for Tentative Map with Vicinity Map and APN page). 1.4 Site Map: (See Appendix for Tentative Map). 2.0 PAST, PRESENT, AND PROPOSED FUTURE USES OF THIS SITE: 2.1 Discussion of Past, Present, and Proposed Future Uses: The primary source of information of the historic use of this property is testimony from one of the owners, Joe Peterson, who was interviewed in March, 2025. The owners have owned the parcels for more than 10 years. The land use has been agricultural and residential. 3.0 IDENTIFICATION OF ALL PAST AND CURRENT SOURCES OF CONTAMINATION: 3.1 Methods used to research: Methods used to research this parcel were records researched at the San Joaquin County Agriculture Commissioners office in March 2025 (see appendix for results). An onsite survey was performed on March 27, 2025, by staff of Dillon & Murphy. The San Joaquin County Environmental Health Department's underground storage tank mitigation database list did yield results for removed underground storage tanks. The San Joaquin County Environmental Health Departments public records provided information regarding tire shop use on the property. 3.2 Description of all past on-site potential and/or known above and below ground sources of contamination identified at the project site: Past on-site potentials for contaminations are moderate. The property has been used as a residence and agricultural land for more than 20 years. Historically there were two underground storage tanks which were removed in 1996. (Permit #PR0506253). One 1000 gallon fuel tank and one 550 gallon home heating oil tank on 14090 N Alpine Rd. That property was also previously used as a tire shop/storage. There were no permits for this use and all tires were removed from the property per EHD reports. The San Joaquin County Agricultural Commissioner's office report did yield results for pesticides/chemicals used on this site. The results of the pesticide use report yielded that there are chemicals of potential concern at the project site. The vineyard has historically been treated with Carbaryl, diuron, simazine, strychnine, zinc phosphide, 2,4-D, paraquat, non-permit non-ag, and non-permit ag-pod (See Permit No. 39-24- 3904043, 39-20-3904043, and Permit No. 39-21-3904043) (See Appendix) 1