7405 HARDESON RD BASE FILE 2016-01-01 MF Import

3. Open the dcors to the vault and allow the system lo air o�t for 5-10 minutes. 4. Without entering the vaull, inspect the inside of lhe unit, including components. 5. Take notes about the external and internal condition of the vault. Be sure lo record the level of sediment build-up on the iloor oi the vault, in the forebay, and on top of the cartridges. If flow is occurring, note the level of waler and estimate the flow rate per drainaae pipe. Record ail observations. 6. Remove large loose debris and trash using a po!e with a grapple or net on the end. 7. Close and fasten the door. 8. Remove safety equ�pment. Make notes about the local drainage area relative to ongoing �:o.�struction, erosion problems, or high loading o( other materials to the system. 10. Finally, review the condition reporls from the previous minor and major maintenance visils, and schedule cartridge replacement if needed. Major Maintenance Depending on the configuralion of the particular system, a worker may be required to enter the vault to periorm some tasks. Impartant: If vault entry is required, OSHA rules for confined space entry must be followed. Filter cartridge replacement should occur during dry weather. It may be necessary to plug the filter inlet pipe if base Oows exist. Standing water present in the vault should be regarded as polluted and should be contained during this operation by temporarily cappinc� lhe manifold connectors. Replacement cartridges will L� delivered to the site. Information concerning how to ottain the replacement cartridges is avaiiable from Storrnwater Management, Inc. Waming: In the case of a spill, ihe worksr should abort maintenance activities until the proper guidance is obtained. Notity the local hazzrd control agency and Sturmwater Management Inc. immedi��tely. To conduct cartridge replacement and sediment removal maintenance: 1. If applicable, set up sa(ety equipment to protect pedestrians from (all hazards due to open vault doors or when work is being done near walkways or roadways. 2. Visually inspect the external condition of the unit and take noles concerning defects/prab!ems. 3. Open the doors to the vault and aliow the system to air out for 5-10 minutes. 4. Wilhout entering the vault, give tfie i�side o( the unit, including components, a general condition inspection. 5. Make notes about the external and internal condition of the vault. Give particular attention to recording the level of sediment build-up on the floor of the vault, in the forebay, and on top of the inlernal components. 6. Remove large loose debris a�d trash �sing a pole with a grapple or net on the end. Using a boom, crane, or other device (dolly and ramp), offload the repiacement cartridges (up to 150 Ibs. each) and set aside. Remove used cartridges from the vault using one oi the following melhods: Stormwater A4anagement, I�c. C2004 StormFilter Operation and Maintenance Guldelines 5 of 9