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boring and soil vapor boring during PEI's April 2012 assessment. No evidence of TPH or VOC impact was noted. 5. Future Uses The subject property is vacant and is being operated by a Receiver appointed by the bank. Future uses are unknown at this time; however, they are likely to include warehouse/industrial use as is consistent with the zoning and use of the general area. B. TOPOGRAPHY An excerpt from the USGS 7.5-Minute Stockton West Quadrangle is shown in Figure 4, and in which the 248 Industrial Drive site is called out. The property lies at an elevation of about 15 ft MSL. The topographic gradient direction in the vicinity is generally from east to west at a magnitude of about 0.001 ft/ft. The site itself appears to slope very slightly to the north. There are no surface impoundments on the property. Storm runoff from sheet flow appears to be directed to the north toward a channelized slough north of and parallel to Industrial Drive that is a tributary to French Camp Slough to the west of the site. (The channel turns south after passing beneath McKinley Avenue, then west into French Camp Slough.) French Camp Slough is itself a tributary to the San Joaquin River, and is the major body of water relative to the site. During the initial Phase I investigation at the site (July 2010), it was observed that storm water flow not leaving the site as sheet flow was diverted into several catch basins. From CV RWQCB file information, PEI learned that the drainage system on the eastern side of the property is connected to the municipal stormwater system. Two other stormwater drains observed on the western portion of the property appeared to drain offsite via culvert piping toward the channelized slough. According to CVRWQCB documentation reviewed, the western storm drain system was originally an unlined swale or ditch prior to paving and drainage improvements. In the interior of the main warehouse, a trench "drain" was constructed at its center in a north-south direction. This trench drain's former usage is unclear. It is only located in the southern half of the building's interior. It is possible that the trench was originally related to grain storage and movement. It is also possible that it may have later been used for interior surface water collection and may be connected to the storm drainage system at the northern end of the warehouse, but this is unconfirmed. Surface drainage at the site has never been thoroughly assessed. The limited Phase 11 investigations have focused on subsurface media. As part of this work plan,therefore, a survey of surface drainage features— i.e., inlets, outlets, outfalls—is proposed. More detailed topography of the property and immediate vicinity can then be prepared. California Water Service (Cal Water) provides potable water to the property. Cal Water uses a combination of local groundwater and water purchased from the Stockton East Water District SEWD). The purchased water is imported from New Melones Reservoir on the Stanislaus River and New Hogan Reservoir on the Calaveras River. The water is delivered to the property from Cal Water's main on Industrial Drive, and distributed on site through an underground system. Two fire hydrants and an overhead sprinkler system provide fire suppression. There are no water supply wells on the property. There are currently no monitoring wells on the property. PEI has requested well completion reports for nearby private, municipal and irrigation wells from the Department of Water Resources via the CV