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02 March 2023 AdvancedGeo Project No. 23-7124 An Employee-Owned Company Page 9 of 14 The Veritas fine sandy loam typically features fine sandy loam from 0 to 54 inches and cemented sand from 54 to 70 inches bsg. • The central portion of the property is predominantly composed of the Timor loamy sand having 0 to 2 percent slopes (#254). The Timor loamy sand is composed of alluvium derived from granitic rock sources. Soils are described as moderately well drained, with negligible runoff, very low capacity to transmit water and salinity ranging from 0.0 to 2.0 mmhos/cm. The Timor loamy sand typically features loamy sand from 0 to 56 inches and cemented sand from 56 to 60 inches bsg. 7.2. MASS TRANSPORT PROPERTIES OF UNDERLYING SITE SOILS The percolation test and dominant soil type at the site indicates that the soils are semi- permeable to permeable. This soil will allow moderate infiltration of water through the surface soils. The longer the effluent remains near the surface, the more treatment is enhanced due to natural processes within the soil. If the permeable soils exist to the depth of the groundwater table, it is possible that surface contaminants may be transported rapidly. 8.0. GROUNDWATER ANALYSIS The subject property will be supplied with potable water by the City of Lathrop. 8.1. DESCRIPTION OF LOCAL GROUNDWATER According to the DWR SGMA Data Viewer for Spring 2022, depth to groundwater at the site is approximately 25 to 30 feet bsg. Between 2013 and 2022, depth to groundwater at the site has fluctuated between 15 and 35 feet bsg. Groundwater flow direction locally appears to be toward the northeast. Groundwater was not encountered in the 36-inch- deep percolation test hole advanced on 18 April 2019. 8.2. EXISTING OR POTENTIAL GROUNDWATER CONTAMINATION The immediately adjacent and outlying land use for the parcel is commercial/industrial, miscellaneous, residential, and agricultural. Potential groundwater contamination can occur from several sources including leaking underground storage tanks, septic systems, agricultural activities, dairies, and stormwater infiltration. A review of the DTSC EnviroStor Database and the Geotracker Web site did not reveal any LUST sites within a half-mile radius of the site. The review did not reveal any other sites of environmental concern within a half-mile radius of the site, except for the UPRR — Lathrop Intermodal Facility located at 1000 East Roth Road and the Former Suprema Cheese Wastewater Pond Site located at 2455 Airport Way. Summaries of the investigations were provided in Section 4.2.