Laserfiche WebLink
Working To Restore Nature <br /> 0 In-situ remediation of the soil at this site was not recommended due to the fine grained <br /> nature of soils Excavation was the Best Available Technology for soil remediation at <br /> the site Removal of all impacted soil was not possible due to an overlying building <br /> Petroleum hydrocarbon impacted soil was removed by excavation from the areas which <br /> ' were accessible Petroleum hydrocarbon impacted soil was not removed from beneath <br /> the sidewalk adjacent to the building due to the close proximity of the relatively shallow <br /> building footings <br /> o Based on groundwater analyses from on-site groundwater monitoring well MW1 no <br /> groundwater impact resulted from the unauthorized release of petroleum hydrocarbons <br /> It is concluded that the organic rich, fine grained soils at the site are highly adsorptive <br /> of petroleum hydrocarbons <br /> o The shallow groundwater in the downtown Stockton area is not suitable for consumption <br /> or irrigation and has limited beneficial use it-isnot expected athat yresidual 01 <br /> contamination will result in measurable groundwater impact nor will public health or <br /> ' beneficial uses be adversely affected <br /> ' 6.0 CONCLUSIONS AND RECOMMENDATIONS <br /> ' Source removal excavation succeeded in removing from the subsurface all accessible petroleum <br /> hydrocarbon contaminated soil Residual soil contamination, inaccessible to excavation, exists <br /> beneath a concrete floored building on site and the adjacent sidewalk Based upon historical <br /> analytical yt cal data, this residual soil contamination should not result in detectable groundwater <br /> ' degradation <br /> ' No groundwater contamination currently exists, as evidenced by analyses of water samples from <br /> on-site monitoring well MW 1 Case closure is recommended <br /> OW0I48%REPORTSICR-0644 FNL 10 <br />