ARCHIVED REPORTS XR0010058 - Laserfiche WebLink

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i 1 ' • Water level data are presented in Table 2 During the Investigative history of the site depth to groundwater has ranged from 6 91 feet to S 36 feet below grade ' • The estimated groundwater gradient direction is north to northwest and is presented on Figure 4 in Appendix V 1 • Table 1h resents i 1 p the soil analytical results and Table 3 presents the groundwater analytics , ' results ' • Soil remediation methodology is described in Section 3 4 Remedial Actions The former tank pit area was over-excavated Approximately 800 cubic yards of soil were removed from the excavation Excavation of the full extent of residual soil was not possible due to 1 the location of high voltage lines and a light pole Approximately 92% of the total volume of contaminated soil was removed from the site The stockpiled excavated soil was transported to the BJJ Company facility at 2431 East Mariposa Road, Stockton, California The soils were stockpiled on 6 mil plastic and subsequently remediated and ' disposed of by Lawrence E Swain of Valley Springs, California under approval of San Joaquin County Public Health Services (Appendix VII) ' • No subsurface groundwater remediation system has been recommended or installed Historically, groundwater has not been significantly impacted by the former petroleum hydrocarbon impacted soil Historical analytical results indicate non-detectable levels of petroleum hydrocarbons for the last six quarters of groundwater monitoring ending in 1 January 1994 (Table 3) ' • The property owner, H J Heinz Company, and our client BJJ Trucking, Inc , have discussed the feasibility of moving the light pole and underground utilities to facilitate removal of the small quantity of residual contaminated soil, if it has not biodegraded, and ' consider the costs and disruption of business activities prohibitive and beyond justification w 1967311repotU\C1osure doe 8 • 1 SMTH