2102 ROSS AVE 2025-07-28 - Laserfiche WebLink

I Assumptions111 • No rainfall for 24 hours or more ,� " l • No upstream detention (at least not draining into StormFilter) 10_;;;4 r • Structure is online — `�r - I • Outlet pipe is clear of obstruction • Construction bypass is plugged t Maintenance Depending on the configuration of the particular system, k_ maintenance personnel will be required to enter the vault to , perform the maintenance. " �tC I Important: If vault entry is required, OSHA rules for confined 17:li fspace entry must be followed. IFilter cartridge replacement should occur during dry weather. ALIt may be necessary to plug the filter inlet pipe if base flows is x'occurrinpiii �� r �,:,9 ,1 Replacement cartridges can be delivered to the site or customers ,�facility. Information concerning how to obtain the replacement ,cartridges is available from CONTECH Construction Products. �` �t t ._},�,..�_�� •�•d yam'. _ _ Warning: In the case of a spill, the maintenance personnel F should abort maintenance activities until the proper guidance is obtained. Notify the local hazard control I agency and CONTECH Construction Products immediately. r� To conduct cartridge replacement and sediment removal / maintenance: Important: Note that cartridges containing leaf media (CSF)do I 1.If applicable, set up safety equipment to protect maintenance not require unscrewing from their connectors.Take care personnel and pedestrians from site hazards. not to damage the manifold connectors.This connector 2.Visually inspect the external condition of the unit and take should remain installed in the manifold and could be I notes concerning defects/problems. 3.Open the doors(access portals)to the vault and allow the capped during the maintenance activity to prevent sediments from entering the underdrain manifold. system to vent. B. Remove the used cartridges(up to 250 lbs.each)from the I 4.Without entering the vault,give the inside of the unit, vault. including components,a general condition inspection. Important: Care must be used to avoid damaging the 5.Make notes about the external and internal condition of cartridges during removal and installation.The cost of 111 the vault.Give particular attention to recording the level of repairing components damaged during maintenance sediment build-up on the floor of the vault, in the forebay, will be the responsibility of the owner unless CONTECH and on top of the internal components. Construction Products performs the maintenance activities I 6. Using appropriate equipment offload the replacement and damage is not related to discharges to the system. cartridges(up to 150 lbs.each)and set aside. C. Set the used cartridge aside or load onto the hauling 7. Remove used cartridges from the vault using one of the truck. following methods: I Method 1: D. Continue steps a through c until all cartridges have been removed. A. This activity will require that maintenance personnel enter I the vault to remove the cartridges from the under drain Method 2: manifold and place them under the vault opening for A. Enter the vault using appropriate confined space lifting (removal). Unscrew(counterclockwise rotations) protocols. each filter cartridge from the underdrain connector. B. Unscrew the cartridge cap. I Roll the loose cartridge,on edge, to a convenient spot beneath the vault access. C. Remove the cartridge hood screws(3) hood and float. Using appropriate hoisting equipment, attach a cable D. At location under structure access,tip the cartridge on its I from the boom,crane, or tripod to the loose cartridge. side. Contact CONTECH Construction Products for suggested attachment devices. 4