© AquaShield
TM
, Inc. 2016. All rights reserved.
III.
Diversion Structures (External Bypass Features)
If a diversion (external bypass) configuration is present, it should be inspected as follows:
1.
Inspect weir or other bypass feature for structural decay or damage. Weirs are more
susceptible to damage than off-set piping and should be checked to confirm that they are
not crumbling (concrete or brick) or decaying (steel).
2.
Inspect diversion structure and bypass piping for signs of structural damage or blockage
from debris or sediment accumulation.
3.
When feasible, measure elevations on diversion weir or piping to ensure it is consistent
with site plan designs.
4.
Inspect downstream (convergence) structure(s) for sign of blockage or structural failure
as noted above.
CLEANING
Schedule cleaning with local vactor company or AquaShield
TM
to remove sediment, oil and other
floatable pollutants. The captured material generally does not require special treatment or
handling for disposal. Site-specific conditions or the presence of known contaminants may
necessitate that appropriate actions be taken to clean and dispose of materials captured and
retained by the Aqua-Swirl
®
. All cleaning activities should be performed in accordance with
property health and safety procedures.
AquaShield
TM
always recommends that all materials removed from the Aqua-Swirl
®
during the
maintenance process be handled and disposed in accordance with local and state environmental
or other regulatory requirements.
MAINTENANCE SCHEDULE
I.
During Construction
Inspect the Aqua-Swirl
®
every three (3) months and clean the system as needed. The
Aqua-Swirl
®
should be inspected and cleaned at the end of construction regardless of
whether it has reached its maintenance trigger.
II.
First Year Post-Construction
Inspect the Aqua-Swirl
®
every three (3) months and clean the system as needed.
Inspect and clean the system once annually regardless of whether it has reached its
sediment or floatable pollutant storage capacity.
III.
Second and Subsequent Years Post-Construction
If the Aqua-Swirl
®
did not reach full sediment or floatable pollutant capacity in the First
Year Post-Construction period, the system can be inspected and cleaned once annually.
