20081404 Ver 1_More Info Received_20081212

ENVIRONMENTAL SERVICES, INC.
524 S. NEW HOPE ROAD
RALEIGH, NORTH CAROLINA 27610
919-212-1760 • FAX [phone]
www.environmentalservicesinc.com
December 11, 2008
Ms. Cyndi Karoly
NCDWQ - 401/Wetlands Unit
2321 Crabtree Blvd., Suite 250
Raleigh, NC 27604
?13T
DEC 12 2008
Re: Lakewood Subdivision
DWQ Project # 2008-1404
Ms. Karoly:
DENR-WAVERQUXUT BRANOH
V&?I NDS AND STORO
ESI is submitting this additional information for the above referenced project on behalf of the
applicant. The information provided below is in response to your letter dated 21 November 2008.
Our responses are provided in the order they were listed in your letter.
1. Fishing Platform
The applicant has proposed the fishing platform as an amenity for the future homeowners. The
platform will give the residents a centralized place to fish or enjoy the water and is intended to
minimize further impacts to the buffer by additional foot traffic. The lack of a central fishing
location could lead to bare spots in the ground vegetation along the shoreline resulting from
increased foot traffic as well as trash within portions of the buffer that are intended to be left in
their natural state. Additionally, the fishing platform is a water dependant structure and as such
should be considered to be an allowable use.
2. Level Spreader Supplement Form
This will be submitted under separate cover as soon as it is received from the project engineer.
3. Operations & Maintenance Agreement
The O&M agreement is attached.
I trust that this information will allow NCDWQ to continue processing this application. Please
contact me if you have additional questions.
Sincerely,
ENVIRONMENTAL SERVICES, INC.
J r
eff Harbour, PWS
Asst. Vice President
Cc: Lauren Witherspoon
FLORIDA • GEORGIA 0 NORTH CAROLINA 0 SOUTH CAROLINA 0 MARYLAND 0 OHIO
Permit Number:
(to be provided by DWQ)
Drainage Area Number:
Filter Strip, Restored Riparian Buffer and Level Spreader
Operation and Maintenance Agreement
I will keep a maintenance record on this WE This maintenance record will be kept in a
login a known set location. Any deficient BUF 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 BMW.
Important maintenance procedures:
- Immediately after the filter strip is established, any newly planted vegetation
will be watered twice weekly if needed until the plants become established
(commonly six weeks).
- Once a year, the filter strip will be reseeded to maintain a dense growth of
vegetation
- Stable groundcover will be maintained in the drainage area to reduce the
sediment load to the vegetation.
- Two to three times a year, grass filter strips will be mowed and the clippings
harvested to promote the growth of thick vegetation with optimum pollutant
removal efficiency. Turf grass should not be cut shorter than 3 to 5 inches and
may be allowed to grow as tall as 12 inches depending on aesthetic requirements
(NIWC,1993). Forested filter strips do not require this type of maintenance,
- Once a year, the soil will be aerated if necessary.
- Once a year, soil pH will be tested and lime will be added if necessary.
After the filter strip is established, it will be inspected quarterly and within 24 hours
after every storm event greater than 1.0 inch (or 1.5 inches if in a Coastal County).
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.
BNW element: Potential problem: How I will remediate the ' problem:
The entire filter strip Trash/debris is present. Remove the trash/debris.
system
The flow splitter device The flow splitter device is Unclog the conveyance and dispose
(if applicable) clogged. of an sediment off-site.
The flow splitter device is Make any necessary repairs or
damaged. replace if damage is too large for
repair.
Form SWU401-Level Spreader, Filter Strip, Restored Riparian Buffer O&M-Rev-3 Page I of 3
BMP element: Potential problem: Flow I will remediate the problem:
The swale and the level The swale is clogged with Remove the sediment and dispose
lip sediment. of it off-site.
The level lip is cracked, Repair or replace lip.
settled, undercut, eroded or
otherwise damaged.
There is erosion around the Regrade the soil to create a berm
end of the level spreader that that is higher than the level lip, and
shows stormwater has then plant a ground cover and
bypassed it. water until it is established. Provide
lime and a one-time fertilizer
application.
Trees or shrubs have begun Remove them.
to grow on the swale or just
downslo a of the level lip.
The bypass channel Areas of bare soil and/or Regrade the soil if necessary to
erosive gullies have formed. remove the gully, and then
reestablish proper erosion control.
Turf reinforcement is Study the site to see if a larger
damaged or ripap is rolling bypass channel is needed (enlarge if
downhill. necessary). After this, reestablish
the erosion control material.
The filter strip Grass is too short or too long Maintain grass at a height of
(if applicable). approximately three to six inches.
Areas of bare soil and/or Regrade the soil if necessary to
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.
Sediment is building tip on Remove the sediment and
the filter strip. restabilize the soil with vegetation if
necessary. Provide lime and a one-
time fertilizer application.
Plants are desiccated. Provide additional irrigation and
fertilizer as needed.
Plants are dead, diseased or Determine the source of the
dying. problem: soils, hydrology, disease,
etc. Remedy the problem and
replace plants. Provide a one-time
fertilizer application.
Nuisance vegetation is Remove vegetation by hand if
choking out desirable species. possible. If pesticide is used, do not
allow it to get into the receiving
water.
The receiving water Erosion or other signs of Contact the NC Division of Water
damage have occurred at the Quality local Regional Office, or the
outlet. 401 Oversight Unit.at 919-733-1786.
Form SWU401-Level Spreader, Filter Strip, Restored Riparian Buffer O&M-Rev.3 Page 2 of 3
1
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.
Project name:Lakewood Subdivision
BMP drainage area number.
Print name:W.O. Baker. Jr. and Josiah D. Baker
Title:Owners
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, g=j0 A2Lk:" i nLym t? rL-s , a Notary Public for the State of
NO r" 0A.V'6 lrr 4. , County of _N 16(Sk , do hereby certify that
W, b Pk 4, (-d k D 1 J?er personally appeared before me this
day of i VnlffAd a?r , 2A, and acknowledge the due execution of the
forgoing filter strip, riparian buffer, and/or level spreader maintenance requirements.
Witness my hand and official seal,
TAMMY L. SIMMONS
NOTARY PUBLIC
NASH COUNTY, No
SEAL
'--?Lrn IjAa???
My commission expires 3r!Q. D61n
Form SWU401-LeveI Spreader, Filter Strip, Restored Riparian Buffer O&M Rev:3 Page 3 of 3
Address:5855 S. Old Carriage Road