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LFR Levine-Fricke <br /> Revised <br /> • 5.2.1 SVE System <br /> All conveyance piping is proposed to be installed underground The proposed soil <br /> vapor conveyance system is depicted on Figure 10. Extracted soil vapor will be <br /> conveyed from the wells to a temporary treatment system and compound via a pipeline <br /> network of high-density polyethylene pipe. Each extraction well will be fitted with <br /> well-Bead equipment to measure well-head vacuum and flow-rates. The we <br /> equipment will be enclosed m H-20 traffic rated well vaults <br /> 5.2.2 Soil Vapor Treatment System <br /> The extracted soil vapor will be conveyed to a temporary treatment system where it will <br /> be treated prior to atmospheric discharge <br /> 5.3 Phase I SVE Pilot Test Sequence <br /> The Please I SVE pilot test will be performed in the following order- <br /> - passive baseline monitoring <br /> • SVE step test <br /> • SVE constant rate test <br /> • <br /> 5.3.1 Passive Baseline Monitoring Test <br /> This test will be initiated one day before any of the SVE active test sequences begin to <br /> establish a baseline of background, static soil-vapor conditions Monitoring will be <br /> performed for a minimum of eight hours using the SVE wells Air samples will be <br /> obtained to measure oxygen, carbon dioxide, and VOCs from the SVE wells for <br /> comparison with measurements made during active tests. These data will help quantify <br /> the changes m soil-vapor chemistry that will likely resulttsom SVE <br /> Before the sample is collected, a vacuum pump will be used to evacuate the SVE well <br /> casing of a minimum of three volumes of air The field screening samples will be <br /> collected in a Tedlar bag, which will be connected to a field instrument for parameter <br /> analysis following the schedule presented m Table 1 In addition to the field samples, <br /> selected samples will be collected using 141ter Tedlar bags and submitted for Iaboratory <br /> analysis for VOCs. Laboratoy sampling methods are presented in Section 5.4.3 4- <br /> 5.3.2 VaCuum Step Tests <br /> The vacuum step tests are designed to test the range of vacuum that can be imposed on <br /> the unsaturated zone through the individual wells and to calculate the resulting vapor <br /> flow rates and vacuum radii of influence. The purpose of the step test is to collect data <br /> ��14 <br /> wpSVEGSindi-m-W 123 doc!fr <br /> O iTT d 8£T009tP60ZT Q1. 906b zS9 OTS 3AOI2fd 3NIOM adn dd OS 91 z0, b0 inf <br />