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December 14, 2020 Advanced Project No. 20-6235 AnEmpinyee_OwnedCompfMy Page 13 • The Geologic Energy Management Division's (CaIGEM) online mapping application presents California's oil and gas industry information from the geographic perspective. AGI reviewed the CaIGEM Well Finder database for information that may be available for the subject property or surrounding sites. 3.4.1. Additional Subject Property Record Sources The subject property address was searched on the following record sources: SOURCE SUMMARY Regional Board& Property address was not listed on the GeoTracker database and did not have any GeoTracker database records on-file with the Regional Board. DTSC& ENVIROSTOR Property address was not listed on the ENVIROSTOR database and did not have database any records on-file with the DTSC. USEPA ENVIROFACTS Property address was not listed on the ENVIROFACTs database. SJV APCD Property address was not identified as having records on-file with the SJV APCD. SJCEHD Property address was identified as having records on-file with the SJCEHD. Records indicate that a groundwater well was installed on the subject property in 1971. This well supplemented an older well with a tank house that did not have a recorded date of installation. Both wells were removed in 2001. Records indicate that the subject property was served a notice to abate the unattended basement of the structure on the subject property in 1999. CalGem According to The Geologic Energy Management Division's (CaIGEM) online mapping application Well Finder, no oil and/or gas wells are located in the vicinity of the subject property. 3.4.2. Additional Site Vicinity Record Sources The SJCEHD and Regional Board maintain records for, and are responsible for, enforcement of state UST and hazardous waste laws. AGI commonly reviews files for up-gradient sites under active environmental regulation to ascertain the current site status and its potential to impact the subject property. No sites, under active or past environmental regulation, were identified by the database search within the required search radius of potential concern to the property. 3.5. PROVIDED SUBJECT PROPERTY RECORDS No records were provided to AGI by the user and/or property owner during the course of this Phase I. 3.6. VOLATILE ORGANIC COMPOUND VAPOR ENCROACHMENT The encroachment of hydrocarbon and volatile organic compound (VOC) vapors into soil pore space occurs when organic chemicals migrate from contaminated groundwater or soil into the airspace between soil particles. Some typical organics involved are petroleum based or chlorinated solvents (e.g, BTEX and dry cleaning chemicals). They may have leaked into the groundwater and/or soil from underground storage tanks, or buried waste, or from disposal in septic systems. In compliance with ASTM Standard E2600-15 (Guide for Vapor Encroachment Screening on Property Involved in Real Estate Transactions), AGI evaluated the potential for a Vapor Encroachment Condition (VEC) at the subject property. Based on a VEC screening, it was determined that 'a VEC does not exist' at the property. A copy of the AGI-generated Tier 1 VEC screening form is provided within Appendix E.