ARCHIVED REPORTS XR0007528 - Laserfiche WebLink

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versar - MCLarenmart currently utilized as a Bridgestone automobile repair facility (formerly a Shell gasoline service station), one inactive groundwater remediation system with enclosure, and concrete- and asphalt- paved areas Portions of the asphalt and concrete paved areas were observed to be in disrepair, and in many locations the asphalt surface is cracked and uneven Typical minor oil staining from vehicles was observed throughout the parking lot portion of the Site Exterior construction materials used at the Bridgestone/former Shell gasoline station (Shell station) building include masonry exterior walls, metal roofing, and a concrete slab foundation Interior construction materials at these types of facilities typically consist of gypsum board wails and ceilings and vinyl floor coverings in the office areas According to the aerial photographs reviewed, the on-site building was constructed between 1952 and 1963 Therefore, there is a potential for the presence of asbestos-containing materials (ACMs) and lead-based paint (LBP) at the on-site building An inactive groundwater pump and treat remediation system was observed within an enclosure in the northeast portion of the Site, in front of the Bridgestone facility Eleven well covers (five groundwater monitoring well covers and six extraction well covers) were also noted in the vicinity of the Bridgestone facility According to the Bridgestone representative on-site the Bridgestone facility used to operate as a Shell station and the groundwater treatment system operated for four to five years to treat impacted groundwater and soil contaminated from leaking underground storage tanks (USTs) The representative also stated that the treatment system had been shut down for a few months in anticipation of receiving permission to close the system down It was not apparent during the Site reconnaissance whether or not the Site is supported by piers It is expected that the Site is at least partially underlain by fill material As discussed in Section 2 3, the Stockton Channel formerly extended east from its current location as far as North El Dorado Street, which means that about half the area of the Site was formerly a channel The former uses of the Stockton Channel may have included ship building/repair operations, and the channel may have received impacted agricultural run-off or stormwater Additional research is being performed on sediment conditions within the channel to determine if it represents an area of potential concern -2-