ARCHIVED REPORTS XR0009904 - Laserfiche WebLink

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Corrective Action Plan Page I7 In addition, to comply with the requirements of NPDES Permit No CA0082929, the samples from wells NAV 4 and NAV 6 will be analyzed for the following analytes Analyte Method of Analysis 1 Chlorinated Volatile Hydrocarbons EPA Method 601 ' Aromatic Volatile Hydrocarbons EPA Method 602 Chlorinated Pesticides EPA Method 608 iGeneral Mineral Analysis Including Specific Conductivity, Total Dissolved Solids, Chlorine, Sulfate, Nitrate ' and pH Note Samples of groundwater recovered from wells NAV 3, NAV 4 and NAV 6 on February 17th 1995 were analyzed for total lead and none was present at detectable concentrations The Certificates of Analysis and associated chain-of-custody documentation for those analyses are presented in Appendix B Excavation of Contaminated Soil Prior to any excavation at the site, the location of all buried utilities under the 152 East 11th Street property and under the sidewalks on the East I lth Street and "F" Street frontages will be located and their positions marked on the ground by the United Services Agency(U S A) ' All excavation work where the bottom of the excavation, at any point, is more than 3 ft below the exiting ground surface of the site will be under the direct observation and control of a California-licensed geotechnical engineer To reduce the risk of instability of ' the wall or floor of the excavation that might in any way threaten adjacent property, the engineer will have full authority, at her or his sole discretion, to direct the method and order of excavation, to limit any excavation with respect to its depth, or its areal extent, and to direct the order and method of working No contaminated or uncontaminated soil will be excavated except with the approval of the engineer ' Subject to the specific direction of the engineer overseeing the work on the site, it is proposed that the excavation work will be performed as described below Excavation will be initiated by careful removing the asphalt paving over the whole area of the property (see Figure 6 for property boundaries) This material will be transported off site for disposal at a re-cycling facility AN concrete in foundations and building slabs will be broken up and similarly transported off site to a re-cycling facility where it will be crushed to recover the reinforcing steel for re-cycling and reduce the matrix to a reusable fill material (Note Before any concrete leaves the site it will be inspected for the presence 1