ARCHIVED REPORTS XR0006249 - Laserfiche WebLink

Home Browse Search

SAFEWAY MEAT PACKING FACILITY, STOCKTON, CALIFORNIA TIER II RisK BASED CORRECTTVE ACTION FEBRUARY 26, 1996 PAGE 3 - 2 conditions at the Stockton site inhalation of COIs volatilizing from the groundwater and emitted to ambient (outdoor) air, and, inhalation of COIs volatilizing from the soil and emitted to ambient air The following pathways are incomplete for routine conditions but may be complete under other, limited circumstances, such as construction • Direct exposure pathways (i e , soil ingestion, dermal contact with soil, and inhalation of soil particulate) to surface soil are incomplete for routine conditions The surface area at the site is paved with concrete, thus there is a barrier between people and the surface soil In addition, the COIs and TPH within the vadose zone are found at depths of greater than 20 feet below the ground surface in the vicinity of the former tank field and at 3 feet in the soil around the former tank fuel Imes Thus, even the loss of the concrete cap would not result in direct exposure pathways becoming complete However, the direct exposure pathways may be complete for a limited duration as a result of future soil excavation required to conduct repairs, site reconstruction, and/or reuse of the former tank field area Consequently, the RBCA exposure pathway for surface soil (excavated soil) has been calculated as a potentially complete exposure pathway • Exposures to chemicals volatilizing from soil and groundwater into an enclosed building (two of the ASTM exposure pathways) are incomplete since the nearest building is approximately 100 feet away from the former tank field • Indirect exposures to subsurface soil as a result of drinking groundwater impacted by the soil through leaching is incomplete Groundwater for potable use is not extracted in the vicinity of the Stockton Meat Plant as a result of salt water intrusion This water is unlikely to be extracted for a beneficial use in the foreseeable fixture because of this intrusion However, to assess the potential long-term effect of the soil on the groundwater quality, SSTLs through this pathway have been calculated within this study The site is the location of a meat packing facility and is located in an industrial portion of Stockton For the foreseeable future, the site and surrounding neighborhood will remain as a comm ercnal/industrial zone Consequent, the receptor for the analysis is an industrial/commercial worker Residents have not been considered 0131CDJ1