Development Application part 7 of 10 Stormwater Management Report - MCU13/0092

12.    Move the Vacuum truck near the Storm Filter vault on the down wide side. Be sure that the Vacuum
       truck is not too close to the vault so as the fumes will not enter the vault. Make sure that the last
       500mm ofthe nozzle is approx. 100-125mm in outside diameter.


13.    Feed vacuum nozzle into cartridge bay and start vacuum truck. Remove cartridge hood and            place
       nozzle directly onto filter media. Completely remove media from each cartridge and repeat process for

       every cartridge in vault.


14.    Once completed unthread cartridges from vault floor and    place hood back on cartridges

15.    Using the appropriate lifting cap, attach the cable and remove the cartridge (up to lOkgs. each) from
       the vault. Personnel standing under suspended cartridges is strictly prohibited. Care must be used to
       avoid damaging the cartridges during removal and installation.       The cost of repairing components
       damaged during maintenance will be the responsibility of the owner unless maintenance activities are
       being performed by Stormwater360 and damage is not related to discharges to the system.

16.    Set the used cartridge aside or load onto the hauling truck.


17.   Repeat steps 14 to 15 once all cartridges have been removed.

18.   Remove deposited sediment from the floor of the vault and, if large amounts are present, from the

      forebay. This can be accomplished by using the Vacuum truck

15    Once the sediments are removed, it is necessary to assess the condition of the vault, particularly the
      manifold and the connectors.        These are short sections of 2-inch schedule 50 PVC, or threaded
      schedule 80 PVC that should protrude above the floor of the vault. If required, apply a light coating of
      FDA approved silicon grease to the outside of the exposed portion of the connectors. This ensures a

      watertight    connection     between the cartridge and the      drainage pipe.   Replace   any   damaged
      connectors.



16.   Using the boom, crane, or tripod, lower and install the new cartridges (typically 16-17kgs. for perlite
      cartridges). Once again, take care not to damage connections.

17.   Close and fasten the door, and remove safety equipment.


18.   Make notes about the local drainage area relative to ongoing construction, erosion problems, or high

      loadings of other materials to the system.

19.   Finally, dispose of the residual materials      in   accordance   with   applicable regulations.   Make
      arrangements to return the used cartridges to Stormwater360.




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