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2.4.1 Venting Blowers <br /> The venting blowers currently Installed in the equipment trailer at the <br /> facility have capacities of approximately 250 cfm at 55 in H2O vacuum <br /> The venting blowers are oversized for this application, but the marufolded <br /> piping system in the trailer allows for control of the venting flow rate from <br /> each vent well The venting blowers are equipped with all necessary flow <br /> meters, vacuum gauges, flow control valves, and sample ports It is <br /> anticipated that only one of the venting blowers will be used at a time <br /> during remediation Because of the low maintenance required for the <br /> 1 venting blowers, operation of each blower will not be automatically <br /> alternated <br /> 2.5 Sparge and Vent Piping <br /> The air sparging and soil venting wells will be located around the perimeter <br /> of the building as shown in Sheet 3 The sparge and vent piping from the <br /> wells to the building will be Installed in trenches below grade Trench <br />' locations are shown on Sheet 4 The piping will then be routed along the <br /> outside wall of the building to the equipment trailer The vent piping will <br /> be installed at a grade to drain accumulated moisture back to the well or to <br /> collection points at the equipment trailer <br /> Piping connections at the well heads will be pressure tested prior to <br /> backfilling The individual air sparging wells will be connected to the <br /> compressors with 1-inch PVC piping and the individual soil venting wells <br /> will be connected to blowers with 2-inch PVC piping <br /> 2.6 Vapor Treatment <br />' The proposed remediation system will use two granular activated carbon <br /> (GAC) adsorbers Installed in series Each GAC adsorber will contain <br /> approximately 1800 pounds of carbon Hydrocarbon impacted air will pass <br /> through the GAC adsorber where hydrocarbon compounds will be filtered <br /> to levels acceptable for atmospheric discharge Vapor samples collected <br /> from between the two GAC adsorbers will be used to evaluate the need for <br /> replacement of the first adsorber The spent GAC will be returned to the <br />' supplier for regeneration Permits to treat impacted air will be obtained <br /> from the local air quality management district <br /> Final Remediation Plan <br /> Prepared for RAINBO BAKING COMPANY5 Prepared by Burlington Environmental Inc <br /> E 112138211259971TESTEVAL.DOC 2/1/95 <br />