Laserfiche WebLink
David Jenkins <br /> 4/12/95 <br /> Page 4 <br /> worked to prepare the garden plot for plants. If the soil <br /> contaminated with PAH concentrations associated with <br /> unacceptable risk are visually distinct from the other soil, <br /> then it is possible that contaminated soil could be identified <br /> by the residents when the garden plots are prepared. If <br /> contaminated soil were to be removed prior to gardening, then <br /> the risk resulting from home grown produce would be mitigated. <br /> However, this risk management strategy i,s dependent on <br /> identification and timely removal of contaminated soil . <br /> The soil from each sample on which a chemical analysis for <br /> PAHs is conducted should be archived for future visual <br /> inspection. If significant risk is determined from vegetables <br /> grown in PAH-contamianted soil, the archived soil samples <br /> should be inspected and the samples categorized visually <br /> contaminated or uncontaminated. The soil category results <br /> should then be compared with the concentration of PAHs to <br /> determine if risky soil concentrations of PAHs are visibly <br /> distinct from soil that poses no health risk. If visual <br /> categorization is possible and CPL is willing to continue <br /> responding to the removal requests of the residents, this may <br /> be a potential risk management strategy. <br /> Conclusions and Recommendations <br /> Given additional samples from the top twelve inches, the <br /> proposed soil sampling appears to be a comprehensive plan based <br /> on the information provided. I am relying on the CVRWQCB to <br /> ensure that the. proposed sampling of the ground water is <br /> adequate to provide a basis the concentration of BTEX and PAHs <br /> in potential tap water. <br /> #16, ful— <br /> Reviewer: Stephen Dizio <br /> Senior Toxicologist <br /> Office of Scientific Affairs <br />