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Important: This activity wiil require that <br />workers enter the vault to remove the <br />cartridges from the drainage system. <br />Method 1: <br />a. Using an appropriate sling, attach <br />the cable from the boom, crane, or <br />tripod to the cartridge being <br />renioved. Contact SMI for <br />specitications on appropriate <br />attachment devices. <br />This activity will require that workers <br />enter the vault to remove the <br />cartridges from the drainage system <br />and place them under the vault <br />opening for lifting. <br />Importart. Note that cartridges <br />containing media other than the leat <br />media require unscrewing from their <br />threaded connectors. Take care not <br />to damage the manifold connectors. <br />This connector should remain <br />installed in the mani(old and capped <br />if necessary. <br />b. Remove the used carlridges <br />(250 ibs. each) from the vauit. <br />Important: Care must be used lo <br />avoid damaging the cartridges <br />during removal and installation. The <br />cost of repairing components <br />damaged during maintenance will be <br />the responsibility oi the owner <br />unless Stormwater Management <br />per(orms the mainlenance activities <br />and damage is not related to <br />discharges to the system. <br />c. Set the used carlridge aside or <br />load onto the liauling truck. <br />d. Continue steps a through c until <br />all carlridges have been removed. <br />Method 2: <br />a. Unscrew the cartridge cap. <br />b. Remove the cartridge hood. <br />c. Tip the cartridge on its side. <br />Important: Note that cartridges <br />containing media other than the leaf <br />media require unscrewing from their <br />threaded connectors. Take care not <br />to damage the manifold connectors. <br />This connector should remain <br />installed in the manifold and capped <br />if necessary. <br />d. Empty the cartridge onto the vault <br />(loor. <br />e. Set the empty, used cartridge <br />aside or load onto the hauling truck. <br />f. Continue steps a through e until <br />all cartridges have been removed. <br />9. Remove deposited sediment from the <br />floor of the vault and, i( large amounts <br />are present, from the forebay. This can <br />usually be accomplished by shoveling <br />the sediment into containers, which, <br />once full, are lifted mechanically from <br />lhe vault and placed onto the hauling <br />truck. If Method 2 in Step 8 is used to <br />empty the cartridges, or in cases of <br />extreme sediment loading, a vactor <br />truck may be required. <br />10.Once the sediments are removed, <br />assess the condition of the vault and the <br />condition of the manifold and <br />connectors. The connectors are short <br />sections of 2-inch schedule 40 PVC, or <br />threaded schedule 80 PVC that should <br />protrude above the floor of the vault. <br />a. if required, apply a light coating of <br />FDA approved silicon grease to the <br />outside of the exposed portion of <br />the connectors. This ensures a <br />watertight connection between the <br />cartridge and the drainage pipe. <br />b. Replace any damaged connectors. <br />Slonnwaler Management, Inc. 02004 StormFiller Operation and Maintenance Guidelines 6 of 9 <br />