SW6100804_O&M Agreement/Plan_20220611

IF
n.G04h ~ AM1
Permit Number: _5144 10 DV011
(to be provided by DWQ)
Drainage Area Number:
Wet Detention Basin Operation and Maintenance Agreement
l wi11.keep a maintenance record on this Bl .p. This maintenance record will be kept in
log in a known set location. Any deficient BMP elements noted in the inspection will be
corrected., repaired or replaced immediately. These deficiencies can affect the integrity
of structures, safety of the public., and the removal efficiency of the BMP.
The vet detention basin system is defined as the Bret detention basin,
pretreatment including forebays and the vegetated filter if one is provided.
This system (check one):
[:]does M does not
This system (check one):
[:]does N does not
incorporate a vegetated filter at the outlet.
incorporate pretreatment other than a foreb-
Important maintenance procedures
- Inunediately after the wet detention basin is established, the plants on the
vegetated shelf and perimeter of the basin should, be watered twice weekly if
needed, until the plants become established ed(commonly six veer.
- No portion of the wet detention pond should be fertilized after the first n
tral
fertilization that is required to establish the plants on the vegetated shelf.
- Stable groundcover should be maintained: in the drainage area to reduce the
sediment load to the vet detention basin.
- if the basin must be drained for an emergency r or to perform mami tenan.ce
the
flushing of -sediment through the emergency drain should be d d to -the
maximum extent practical.
Once a year, a darn safety expert should inspect the emban1kx ent
4
After the wet detention pond is established, it should be inspected once
ithia hours after everystorm event eater man 1. i(or
a month and
inches �� inches if in
Coastal County). Records of operation and maintenance should be kept •
location and must be available n request. p a known set
Inspection activities shall be performed as follows. Annobler
be repaired immediately.
p that axe fod shall
B P element:
The entire BMP
The perimeter of the wet
detention basin
Potential -problem:
Trash/ deb is present.
.areas of bare soil and/or
erosive gullies have formed.
Vegetation is too short or too
lore.
Form SW401 -Wet Detention Basin O& - e .4
How I will reniecdiate the noble
Remove the trash/ debris.
e, rade the soai if necessary
remove e h to
ground� and therx fit a
cover and water until it is
established, Provide e
One-time a
time fer�er a licabon,
axnta� vegetion at a height
ra�c�rtatel six of
a
aches .
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