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The laboratory analytical results for soil samples SSA-1', SSB-1' and SSC-1' are tabulated in Tables 1 and 3. The laboratory analytical report and chain-of-custody documentation is provided in Appendix F. SAN FRANCISCO BAY REGIONAL WATER QUALITY CONTROL BOARD ENVIRONMENTAL SCREENING LEVELS Laboratory analytical results for soil samples collected as part of this investigation were compared to the July 2019 (Revision 2) SFBRWQCB Environmental Screening Levels (ESLs). The ESLs are considered to be conservative and under most circumstances and within the limitations described in the ESL guidance document, the presence of a chemical at concentrations below the corresponding ESL can generally be assumed to not pose a significant threat to human health or the environment. Conversely, an exceedance of an applicable ESL does not necessarily indicate that a potential ecological or human health risk exists or that mitigation or remediation to levels below applicable ESLs would otherwise be required. However, an exceedance of an ESL may warrant further attention or consideration in light of the anticipated land use, receptors (e.g., ecological or human), and/or potential routes of exposure. Arsenic was consistently detected in all soil samples collected as part of this assessment at concentrations in excess of the Commercial/Industrial ESLs. However, arsenic occurs naturally in California soils at concentrations in excess of the SFBRWQCB health-based ESLs. Therefore, soil data are typically compared to background concentrations for naturally-occurring elements. Background concentrations of arsenic in the State of California generally range up to approximately 11 mg/kg (3) therefore . No other exceedances of the SFBRWQCB ESLS were noted for any other metals in any soil samples collected as part of this assessment. Laboratory analytical results of soil samples collected during this investigation indicated the presence of trace concentrations of TPH-g, TPH-d, TPH-mo and TPH-rr and VOCs in soil samples collected as part of this assessment (with the exception of arsenic). However, no VOCs or TPH fractions were detected at concentrations in excess of the SFBRWQCB ESLs for Residential or Commercial/Industrial land uses. Therefore, the presence of trace concentrations of these constituents does not represent an environmental condition in relation to the formerly buried Jeep at the Bonnie Plants facility. 3 Department of Toxic Substances Control (DTSC), Background Concentrations of Metals, a Progress Report (undated). ADDITIONAL CORRECTIVE ACTIONS Pallets of Nutricote Total Type 140, Peters Excel 15-5-15 in Greenhouse 3D and Pallets of Nature Safe 10-2-8 in Greenhouse 3D During their walkthrough at the Bonnie Plants facility, SJCEHD personnel observed five-and-a-half pallets of Nutricote Total 18-6-8 Type 140 fertilizer, one pallet of Peters Excel 15-5-15 fertilizer and 13 pallets of Nature Safe 10-2-8 in greenhouses at the Bonnie Plants facility. Additionally, two pallets of Nature Safe 10-2-8 observed in Greenhouse 3 D had holes in bags where the contents had leaked onto the floor. The Notice to Abate indicated storage of these materials requires secondary containment. Atlas personnel worked with Bonnie Plants personnel to provide secondary containment for the dry fertilizer storage areas at the Bonnie Pants facility. Pictures of the secondary containment for the dry fertilizer storage locations that were taken on March 22, 2022, are provided in Appendix E.