9212 HOLLY DR 2018-01-02 MF Import

i 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 inside 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 build-up on the floor of the vault, in the forebay, and on top of the cartridges. If ' flow is occurring, note the level cf water and estimate the flow rate per drainage pipe. Record all observations. 6. Remove large loose debris cnd 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 the condition reports from the previous minor and major ' maintenance visits, and schedule cartridge replacement 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 necessary to plug the filter inlet pipe if base flows exist. Standing water present in the vault should 1 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 concerning how to obtain the replacement cartridges is available from CONTECH Stormwater Solutions. Warning: In the case of a spill, the worker should abort maintenance activities until the proper guidance is obtained. Notify the local hazard control agency and CONTECH Stormwater Solutions immediately. To conduct cartridge replacement and sediment removal maintenance: 1. If applicable, set up safety equipment to protect pedestrians from fall hazards c 3e 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 notes concerning defects/problems. 3. Open the doors to the vault and allow the system to air out for 5-10 minutes. 4. Without entering the vault, give the inside of 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 internal components. 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 lbs. each) and set aside. 8. Remove used cartridges from the vault using one of the following methods: 02006 CONTECH SIorrmvaler Solutions Toll -free: 800.548.4667 W �5of9 ' centechstormwmteccom Vault. CIP and Linear StormFilteroperaaon and Maintenance Guidelines