20060002 Ver 4_Stormwater Info_20100304

FREELAND and KAUFFMAN, INC. © ? - 0 00 a v 4
EMG/Iv ms - LAwwAPE ARQrECrs
March 3, 2010
To:
Division of Water Quality, 401 Unit
2321 Crabtree Blvd., Suite 250
Raleigh, NC 27604
(919.715.3425)
Re: Shoppes at Holly Springs, NC (Walmart Shopping Center)
Town of Holly Springs, Wake County
DWQ EXP No. 06-0002 v4
Stormwater Management (SMP) Plan Modification Re-Submittal Package
Dear Ms. Lucas:
We are in receipt of your comment to provide an updated version of the Stormwater Wetland
Operation and Maintenance Agreement for the above-referenced facility. We have enclosed a
copy of this document, with modifications we have agreed upon, which is signed and notarized
by the Owner.
Please review the enclosed document for final approval. Should you have any questions or need
additional information, please contact me directly at 864.672.3441 or mranksAfk-inc.com.
Thank you.
il L5.j ko Lg
MAR 4 2010
DENR -WATER DUALITY
WETLANDS AND STOR1NlYtiATER BRANCH
cc: Stephen Rainer, JSSR Investments (via email)
Darin Eyster, Town of Holly Springs (with enclosure, via US mail)
Via Obieglo, Retention Pond Services (with enclosure, via US mail)
209 West Stone Avenue - Greenville. South Carolina 29609 - Telephone [phone] - Fax [phone]
Permit Number:
(to be provided by DWQ)
Drainage Area Number:
Stormwater Wetland Operation and Maintenance Agreement
I will keep a maintenance record on this BMP. This maintenance record will be kept in a
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.
Important maintenance procedures:
- Immediately after the stormwater wetland is established, the wetland plants will
be watered twice weekly if needed until the plants become established
(commonly six weeks).
- No portion of the stormwater wetland will be fertilized after the first initial cll?
fertilization that is required to establish the wetland plants.
- Stable groundcover will be maintained in the drainage area to reduce the
sediment load to the wet detention basin.
- Once a year, a dam safety expert will inspect the embankment.
After the wet detention pond is established, I will inspect it
hours after every storm event greater than -1 Lq if, in a e0astal
-?ex?: Records of operation and maintenance will be kept in a known set location
and will be available upon request.
Inspection activities shall be performed as follows. Any problems that are found shall
be repaired immediately.
BMP element: Potential problem: How I will remediate the problem:
The entire BMP Trash/ debris is resent. Remove the trash/ debris.
The perimeter of the Areas of bare soil and/or Regrade the soil if necessary to
wetland erosive gullies have formed. remove the gully, and then plant a
ground cover and water until it is
established. Provide lime and a
one-time fertilizer application.
Vegetation is too short or too Maintain vegetation at a height of
long. a roximatel six inches.
The inlet device: pipe or The pipe is clogged (if Unclog the pipe. Dispose of the
swale applicable). sediment off-site.
The pipe is cracked or Replace the pipe.
otherwise damaged (if
applicable).
Erosion is occurring in the Regrade the swale if necessary to
swale (if applicable). smooth it over and provide erosion
control devices such as reinforced
turf matting or riprap to avoid
future problems with erosion.
3'I"Jo
once per
month, and
following
each
significant
rainfall for
the first
year. After
the first
year, I will
inspect it
quarterly
and
following
each
significant
rainfall.
Form SW401-Wetland O&M-Rev.3 Page 1 of 4
BMP element:
The forebay
The deep pool, shallow
water and shallow land
areas
Potential problem:
Sediment has accumulated in
the forebay to a depth that
inhibits the forebay from
functioning well.
Erosion has occurred.
Weeds are present.
Algal growth covers over
50% of the deep pool and
shallow water areas.
Cattails, phragmites or other
invasive plants cover 50% of
the deep pool and shallow
water areas.
Shallow land remains flooded Unclog the outlet device
more than 5 days after a immediately.
storm event
Plants are dead, diseased or
dying.
Best professional practices
show that pruning is needed
to maintain optimal plant
health.
Sediment has accumulated
and reduced the depth to 75%
of the original design depth
of the deep pools.
How I will remediate the problem:
Search for the source of the
sediment and remedy the problem if
possible. Remove the sediment and
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems.
Remove the weeds, preferably by
hand. If a pesticide is used, wipe it
on the plants rather than spraying.
Consult a professional to remove
and control the algal growth.
Remove the plants by wiping them
with pesticide (do not spray) -
consult a professional.
Determine the source of the
problem: soils, hydrology, disease,
etc. Remedy the problem and
replace plants. Provide a one-time
fertilizer application to establish the
ground cover if a soil test indicates
it is necessary.
Prune according to best professional
practices.
Search for the source of the
sediment and remedy the problem if
possible. Remove the sediment and
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Form SW401-Wetland O&M-Rev.3 Page 2 Of 4
BMP element: Potential problem: How 1 will remediate the problem:
The embankment A tree has started to grow on Consult a dam safety specialist to
the embankment. remove the tree.
An annual inspection by an Make all needed repairs.
appropriate professional
shows that the embankment
needs re air.
Evidence of muskrat or Use traps to remove muskrats and
beaver activity is present. consult a professional to remove
beavers.
The micropool Sediment has accumulated Search for the source of the
and reduced the depth to 75% sediment and remedy the problem if
of the original design depth. possible. Remove the sediment and
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Plants are growing in the Remove the plants, preferably by
micropool. hand. If a pesticide is used, wipe it
on the plants rather than spraying.
The outlet device Clogging has occurred. Clean out the outlet device. Dispose
of the sediment off-site.
The outlet device is damaged Repair or replace the outlet device.
The receiving water Erosion or other signs of Contact the NC Division of Water
damage have occurred at the Quality 401 Oversight Unit at 919-
outlet. 733-1786.
Form SW401-Wetland O&M-Rev.3 Page 3 of 4
Permit Number:
(to be provided by DWQ)
I acknowledge and agree by my signature below that I am responsible for the
performance of the maintenance procedures listed above. I agree to notify DWQ of any
problems with the system or prior to any changes to the system or responsible party.
.b
Project name:Shoppes at Holly Springs
BMP drainage area number:
Print name: Mo%I T ?2i?s -ANy6smDrV-3C? LL -
Title: : SR ,. ,e Aden SZ' 1?fT1 7-,A i0-2...
Address: COISO LJoodecaa &ccomze. Coor-
Phone: 110 3 loyQ - dos o 301
Signature:
Date:'- ?\ , .Ok O
Note: The legally responsible party should not be a homeowners association unless more than 50% of
the lots have been sold and a resident of the subdivision has been named the president.
I, K k%? ?- a,.- A s , a Notary Public for the State of
SbutrN C^.e a",aa , County of A:lZeJ , do hereby certify that
=4meHl '3 ,7,g; atrt tY?r,?ta? personally appeared before me this l
day of W Fl ZC N , lip-, and acknowledge the due execution of the
forgoing stormwater wetland maintenance requirements. Witness my hand and official
seal,
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SEAL
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My commission expires
Form SW401-Wetland O&M-Rev.3
Page 4 of 4