Laserfiche WebLink
19 December 2003 <br /> AGE-NC Project No. 95-0128 <br /> Page 7of12 <br /> 3.3. INSTALLATION OF SOIL VAPOR EXTRACTION/GROUND WATER EXTRACTION <br /> PIPING SYSTEM <br /> Two-inch diameter,schedule 40 PVC piping will be installed approximately one foot bsg and routed <br /> from the SVE well heads to the vapor extraction unit.The proposed SVE piping system is illustrated <br /> in Figure 3.One-inch diameter,schedule 40 PVC piping-will be installed approximately one foot bsg <br /> and routed from the new extraction well head to the ground water extraction treatment equipment. <br /> Additionally an electrical conduit will installed from the new extraction well head to the extraction <br /> treatment equipment, to operate a dedicated submersible ground water pump. <br /> Installation of a 15 by 20 foot chain-link gated enclosure will be located in a northeast section of the <br /> site to secure the vapor extraction unit and ground water extraction system. The proposed location <br /> of the gated enclosure is illustrated in Figure 3. <br /> 3.4. SOIL VAPOR EXTRACTION SYSTEM START-UP PERIOD <br /> During the SVE start-up period(first week of operation),influent and effluent vapor concentrations <br /> will be collected on a daily basis to ensure optimal destruction of recovered hydrocarbon vapors. <br /> Operational parameters(air flow,combustion temperature,volume ofprocessed vapor,oxygen level <br /> and the lower explosive limits (%LEL) will be monitored daily during the start-up period. <br /> 3.5. MONITORING AND MAINTENANCE ACTIVITIES <br /> Vapor samples from the SVE influent and the effluent will be collected on a monthly basis and <br /> submitted to a State of California Department of Health Services (DHS)-certified laboratory for <br /> analysis of the following constituents: <br /> • Total petroleum hydrocarbons quantified as gasoline (TPH-g) in accordance with EPA <br /> Method 8015 Modified and <br /> • Volatile aromatics(benzene,toluene,ethyl benzene and xylenes:BTEX)and methyl tert-butyl <br /> ether(MTBE) in accordance with EPA Method 8020. <br /> Laboratory reports for vapor analysis, testing methods, laboratory quality assurance/quality control <br /> (QA/QC) reports, and sample chain of custody documentation will be presented in monthly reports <br /> Vapor influent concentrations,vapor effluent concentrations and operational parameters(combustion <br /> temperature, volume of processed vapor, oxygen level and the lower explosive limits (%LEL)will <br /> Advanced GeoEnvironmental,Inc. <br />