Laserfiche WebLink
.ti <br /> 16 <br /> kn KLEINFELDER <br /> 5 RECOMMENDATIONS <br /> Based on the results of this preliminary soil assessment investigation, Kl.einfelder <br /> recommends that Tracy Community Memorial Hospital proceed with !,the removal and ' <br /> disposal of the contaminated soil in and west of the original tank excavation. Additional <br /> soil borings would provide more information to further evaluate the extent and quantity of <br /> the contamination, but because of contaminant concentration reduction to 14 ppm, 9 feet <br /> west of the excavation, the depth to ground water of 16 feet and the urgency you have <br /> expressed in this project, excavation appears to be'a more effective alternative. <br /> Kleinfelder recommends that Tracy Community Memorial Hospital proceed with the <br /> following activities: } <br /> k <br /> a A copy of this report should be submitted to the San' Joaquin County <br /> Environmental Health Division for their review and consideration. Potential <br /> Lsoil remediation target concentrations for TPH should be obtained from the <br /> appropriate regulatory agencies. <br /> o Tracy Community Memorial Hospital should contract a health and safety <br /> trained licensed hazardous waste contractor to excavate and remove the soil <br /> backfilled in the excavation and the adjacent contaminated 'soil. Special care f <br /> will be necessary to avoid damage to the surrounding stricture west of the ` <br /> excavation. The contractor should have equipment available to excavate <br /> contaminated soil to a depth of 15 feet. Ground water was encountered at 16 <br /> feet. All associated piping and adjacent soil to the piping should be assessed <br /> for potential contamination. <br /> o During the excavation of the contaminated soil, the soil should be <br /> qualitatively screened in the field and confirmation samples collected from + <br /> the sides and bottom of the original excavation and the new excavated area <br /> around B-4 to quantitatively assess the TPH concentrations in the remaining <br /> soil. The extent of soil removal may be limited by surface structures and the <br /> depth that the equipment can safely excavate material. Contaminated soil <br /> I <br /> r <br /> 150-88-2193 7 k <br />