Contech CatchBasin StormFilter Operation And Maintenance page 2

ENGINEERED SOLUTIONS
catchBasin StormFilter™
Maintenance Guidelines
Maintenance procedures for typical catch basins can be applied
to the CatchBasin StormFilter (CBSF). The filter cartridges
contained in the CBSF are easily removed and replaced during
maintenance activities according to the following guidelines.
1. Establish a safe working area as per typical catch basin
service activity.
2. Remove steel grate and diamond plate cover (weight 100
lbs. each).
3. Turn cartridge(s) counter-clockwise to disconnect from pipe
manifold.
4. Remove 4" center cap from cartridge and replace with
lifting cap.
5. Remove cartridge(s) from catch basin by hand or with vactor
truck boom.
6. Remove accumulated sediment via vactor truck (min.
clearance 13" x 24").
7. Remove accumulated sediment from cartridge bay. (min.
clearance 9.25" x 11").
8. Rinse interior of both bays and vactor remaining water and
sediment.
9. Install fresh cartridge(s) threading clockwise to pipe
manifold.
10. Replace cover and grate.
11. Return original cartridges to Contech for cleaning.
Media may be removed from the filter cartridges using the
vactor truck before the cartridges are removed from the catch
basin structure. Empty cartridges can be easily removed from
the catch basin structure by hand. Empty cartridges should be
reassembled and returned to Contech as appropriate.
Materials required include a lifting cap, vactor truck and
fresh filter cartridges. Contact Contech for specifications and
availability of the lifting cap. The vactor truck must be equipped
with a hose capable of reaching areas of restricted clearance.
the owner may refresh spent cartridges. Refreshed cartridges are
also available from Contech on an exchange basis. Contact the
maintenance department of Contech at 503-258-3157 for more
information.
Maintenance is estimated at 26 minutes of site time. For units
with more than one cartridge, add approximately 5 minutes for
each additional cartridge. Add travel time as required.
Stormwater Solutions from Contech ®
OperatiOn and
Maintenance
Mosquito Abatement
In certain areas of the United States, mosquito abatement is
desirable to reduce the incidence of vectors.
In BMPs with standing water, which could provide mosquito
breeding habitat, certain abatement measures can be taken.
1. Periodic observation of the standing water to determine if
the facility is harboring mosquito larvae.
2. Regular catch basin maintenance.
3. Use of larvicides containing Bacillus thuringiensis israelensis
(BTI). BTI is a bacterium toxic to mosquito and black fly
larvae.
In some cases, the presence of petroleum hydrocarbons may
interrupt the mosquito growth cycle.
Using Larvicides in the CatchBasin StormFilter
Larvicides should be used according to manufacturer's
recommendations.
Two widely available products are Mosquito Dunks and
Summit B.t.i. Briquets. For more information, visit http://www.
summitchemical.com/mos_ctrl/d efault.htm.
The larvicide must be in contact with the permanent pool. The
larvicide should also be fastened to the CatchBasin StormFilter
by string or wire to prevent displacement by high flows. A
magnet can be used with a steel catch basin.
For more information on mosquito abatement in stormwater
BMPs, refer to the following: http://www.ucmrp.ucdavis.edu/
publications/managingmosquitoesstormwater8125.pdf
www.ContechES.com/stormwater
800-338-1122
© 2013 Contech Engineered Solutions
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