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ANA AI k <br /> Work Plan For Additional Groundwater Delineation and Ozone Microsparge System Installation,Tosco(Former BP)Station No.11195 <br /> September 19,2002 <br /> Task 2. Ozone Sparge Point Installation <br /> The sparge point installation will be completed in conjunction with the monitoring well <br /> installation, and will follow the same drilling and sampling protocol. Locations of the <br /> proposed sparge points are shown on Figure 2. Each sparge point will be installed at the <br /> bottom of the boring. Sparge point construction details are presented on Figure 4. <br /> Task 3. Equipment Installation <br /> The C-SpargeTM panels will be mounted at locations away from the existing building. The <br /> panel size is approximately 31" by 39". The panel includes an ozone generator, air <br /> compressor, and a programmable timer/controller. Sparge points are connected to the panel <br /> by 3/8" HDPE tubing. Each sparge point will have a dedicated line. The tubing will be run <br /> through schedule 80 PVC conveyance piping for added protection. Power will be supplied by <br /> a 120 volt, 16 amp, single phase service. A system plan will be prepared for bidding and <br /> installation purposes. <br /> Task 4. System Operation <br /> The system cycles ozone/air injection between the sparge points. The schedule can be <br /> varied to match site specific conditions. The schedule will be varied as part of the system <br /> evaluation process. The projected radius of influence for each sparge point is approximately <br /> 20 to 25 feet. <br /> Existing monitoring wells will also be sampled monthly for the first six months of <br /> operation. In addition to the current sampling parameters the dissolved oxygen in the wells <br /> will also be measured. After the first six months of operation the effectiveness of the system <br /> will be evaluated. At that time a decision will be made to either discontinue operation, <br /> continue operation without modification or continue operation of the system with system <br /> expansion or other modifications. <br /> REPORTING <br /> Following receipt and analysis of all data, a report will be prepared which summarizes the <br /> procedures and results associated with the monitoring well installation and the ozone system <br /> installation and startup. The first system evaluation report will be prepared and submitted after six- j <br /> months of system operation has been completed. The reports will be submitted to Tosco for their <br /> use and distribution. E <br /> 140193.14 5 <br /> C <br /> E <br />