Laserfiche WebLink
3.3.3 Decontamination and Disposal <br /> 3.3.3.1 Decontamination. Care will be exercised to prevent contamination <br /> of personnel and the environment during installation of the system and <br /> sampling. Decontamination operations as required in Section 2D of MCTC's <br /> Contract No. 13 construction specifications will be followed. In <br /> addition, Kleinfelder's Health and Safety Plan for the soil flushing <br /> activities shall be reviewed in its entirety prior to the start of <br /> sampling activities and the requirements in the plan shall be adhered to <br /> by MCTC' s contractor. The health and safety measures taken by Black & <br /> Veatch personnel will satisfy Kleinfelder's plan and will be in accordance <br /> with a site specific health and safety plan developed by Black & Veatch <br /> for Black & Veatch personnel only. <br /> Specific initial , intermediate, and final decontamination requirements are <br /> prescribed in Section 2D of the Contract No. 13 specifications. <br /> 3.3.3.2 Disposal . Contaminated ground water purged from the neutron <br /> probe monitoring tubes and the extraction wells will be temporarily <br /> containerized at MCTC's facility. When designated by MCTC or Black & <br /> Veatch, the purged water will be discharged into the existing onsite water <br /> treatment system as specified in Section 2A-12 of the Contract No. 13 <br /> specifications. <br /> 3.4 MONITORING ACTIVITIES <br /> Periodic monitoring of the unsaturated zone will be conducted during the <br /> pilot and full-scale flushing operation activities. MCTC will retain a <br /> specialized consultant to perform water level and moisture content <br /> measurements at the neutron probe monitoring tube locations. MCTC or <br /> MCTC' s representative will be responsible for maintaining the integrity of <br /> the injection system. <br /> 3.4. 1 Water Level Measurements <br /> During the pilot study, the consultant will be required to monitor the <br /> water-levels in the six neutron probe monitoring tubes. The monitoring <br /> tubes will serve as piezometers and as neutron probe tubes. Initially, <br /> water level measurements will be conducted daily. Thereafter, the <br /> consultant will make site visits every two to three days, or weekly as <br /> needed and directed by Black & Veatch. <br /> Monitoring of the water table elevation during the full-scale flushing <br /> operations will be conducted periodically by MCTC or MCTC' s <br /> representative. The frequency of measurements will be contingent upon the <br /> results of the pilot study. Monitoring of the water table elevation will <br /> be necessary to determine if the injection water flushing is creating an <br /> artificial mound near the injection wells (see Figure 3-1) and to ensure <br /> that the extraction well is not being over pumped. <br /> Specific requirements for water level measurements, materials, and data <br /> collection procedures are being prepared for the consultant as a separate <br /> document. In general , the consultant will measure the depth to the water <br /> table from the ground surface using an electric water level indicator. <br /> 11654.652 3-6 <br />