9929 EVERGREEN WAY HORIZON BANK 2018-01-01 MF Import

3. Open the doors to the vault and allow the system to air out for 5-10 minutes. 4. Without entering the vault, inspect the i�side of the unit, including components. 5. Take notes about the external and internal condition of the vault. Be sure to record the level of sediment builc�-up on the floor oi the vault, in the forebay, and on top of the cartridges. If flow is occurring, note the level of water and estimate lhe flow rate per drainage pipe. Record all observations. 6. Remove larye loose debris and trash using a pole with a grapple or net on the end. 7. Close and fasten the door. 8. Remove safety equipment. 9. Make notes about the local drainage area relative to ongoing construction, erosion problems, or high loading of other materials to the system. 10. Finally, review ihe condition reports from the previous minor and major maintenance visits, and schedule cartridge repiacement if needed. Major Maintenance Depending on the configuration of the particular system, a worker may be required to enter the vault to perform some tasks. Important: 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 necesaary to plug ihe filter inlet pipe if base flows exist. Standing water present in the vault should be regarded as polluted and should be contained during this operation by temporarily capping the manifold connectors. Replacement cartridges will be delivered to the site. Information concern��ig how to obtain the replacement cartridges is available from Stormwater M:inagement, Inc. Warning: In the case of a spil', the worker should ahort maintenance a�;tivities until the proper guidance is obtained. Notify the local hazard control acency and a'tormwater Management Inc. im�nediately. To conduct cartridge replacement and sediment removal maintenance: 1. If appli�able, set up safety equipment to protect pedestrians from fali hazards due to open vault doors or when work is being done near walkways or roadways. 2. Visually inspect the externai condition of the unit and take notes concerning defectslproblems. 3. Open the doors to the vault and allow the system to air out for 5-10 min utes. 4. Without entering ;he vault, give the inside of the unit, incl�ding 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 internal comF�nents. 6. Remove large loose debris and trash using a pole with a grapple or net on the end. 7. Using a boom, crane, or other device (dolly and ramp), offload the replacement cartridges (up to 150 Ibs. each) and set aside. 8. Remove used cartridges from the vauit usin� one of the following methods: Slormwaler Management, Inc. ��2004 StormFilter Operetion and Maintenance Guidelines 5 0( 9 36