20090476 Ver 1_More Info Received_20090529

t?
• TEI? INC.
"The Natural Selection"
1 2 2 5 G a t e h o u s e D r i v e C a r e N C 2 7 5 1 1 U S A
May 30, 2009 00? _ U V? 7 4
NCDENR - DIVISION OF WATER QUALITY
Mr. Ian McMillan
2321 Crabtree Blvd., Suite 250
Raleigh, NC 27604
RE: CAMBRIDGE VILLAGE INDEPENDENT LIVING ELDERLY APARTMENTS
Wake County, North Carolina
Ecotek Project No. 09-08A
Dear Mr. McMillian:
On behalf Apex Independent Living, LLC, we hereby resubmit the following documentation
required by General Water Quality Certification #3631 for activities associated with the
disturbance of 0.10-acre of jurisdictional wetland and 0.04-acre of riparian buffer. The contents
of this resubmittal serve as the predischarge notification and contain the following
documentation, as agreed upon at our meetings on May 21 and May 26, 2009:
1. A revised copy of the Proposed Impacts Inventory & Impact Justification and Mitigation
sections from the Preconstruction Notification Form, Version 1.3, dated Dec. 10, 2008.
2. A detail of the Level Spreader, taken from the North Carolina Division of Water Quality
- Stormwater Best Management Practices Manual, dated July 2007.
3. Signed and notarized Operations & Maintenance Agreements for the Wet Detention
Basin, Bioretention Area and Level Spreader onsite.
4. A revised preliminary site plan showing the reconfigured roadway/retaining wall, areas of
impact and stormwater management structures onsite.
We trust this documentation addresses your concerns regarding the proposed activities of this
project, and look forward to authorization at your earliest convenience.
Sincerely,
Mark Vosberg
President, Wetland Scientist
Encl.
Cc: Mr. Jamie Shem / US Army Corps of Engineers; Mr. Buddy Player / Miller Player & Assoc.
[e-mail] [phone]
C. Proposed Impacts Inventory
1. Impacts Summary
h sections were completed below for your project (check all that apply):
la. Z
etlands
? Streams - tributaries ? Buffers
? Open Waters ? Pond Construction
2. Wetland Impacts
If there are wetland impacts proposed on the site, then complete this question for each wetland area impacted.
2a. 2b. 2c. 2d. 2e. 2f.
Wetland impact Type of jurisdiction
number - Type of impact Type of wetland Forested (Corps - 404, 10 Area of impact
Permanent (P) or (if known) DWQ - non-404, other) (acres)
TemMrary (T)

W1 P El T
Fill
Non-Riparian Yes

? No
Corps
? DWQ
0.10
W2 ? P ? T ? Yes ? Corps
? No ? DWQ
W3 ? P ? T ? Yes ? Corps
? No ? DWQ
W4 ? P ? T ? Yes ? Corps
? No ? DWQ
W5 ? P ? T ? Yes ? Corps
? No ? DWQ
W6 ? P ? T ? Yes ? Corps
? No ? DWQ
2g. Total wetland Impacts 0.10
2h. Comments: Low quality non-riparian and linear wetland areas dominated by secondary growth Sweetgum (L. styraciflua)
and Red maple (A. rubrum).
3. Stream Impacts
If there are perennial or intermittent stream impacts (including temporary impacts) proposed on the site, then complete this
question for all stream sites impacted.
3a.
Stream impact 3b.
Type of impact 3c.
Stream name 3d.
Perennial 3e.
Type of jurisdiction 3f.
Average 3g.
Impact
number -
Permanent (P) or (PER) or
intermittent (Corps - 404, 10 stream length

Temporary (T)
(INT)? DWQ - non-404,

other) width

(feet) (linear

feet)
S1 ? P ? T ? PER ? Corps
? INT ? DWQ

S2 ? P ? T ? PER ? Corps
? INT ? DWQ

S3 ? P ? T ? PER ? Corps
? INT ? DWQ

S4 ? P ? T ? PER ? Corps
? INT ? DWQ

S5 ? P ? T ? PER ? Corps
? INT ? DWQ

S6 ? P ? T ? PER [:1 Corps
? INT ? DWQ

3h. Total stream and tributary Impacts N/A
.n. vW§11111cUlA.
Page 4 of 4
PCN Form - Version 1.3 December 10, 2008 Version
4. Open Water Impacts
If there are proposed impacts to lakes, ponds, estuaries, tributaries, sounds, the Atlantic Ocean, or any other open water of
the U.S. then individual) list all open water im acts below.
4a.
Open water
impact number -
Permanent (P) or
Temporary 4b.
Name of waterbody
(if applicable) 4c.

Type of impact 4d.

Waterbody type 4e.

Area of impact (acres)
01 ?P?T
02 ?P?T
03 ?P?T
04 ?P?T
4f. Total open water impacts
4g. Comments:
5. Pond or Lake Construction
If and or lake construction proposed, then complete the chart below.
5a.
Pond ID

b 5b.
Proposed use or purpose 5c.
Wetland Impacts (acres) 5d.
Stream Impacts (feet) 5e.
Upland
(acres)
num
er of pond
Flooded
Filled
Excavated
Flooded
Filled
Excavated
Flooded

5f. Total I
5g. Comments:
GL 1. J?? L:..L L •
.,...... ?. ,..4......y11 llucau., Nclllpit lcyuneur
? Yes ? No
If yes, permit ID no:
5i. Expected pond surface area (acres):
5j. Size of pond watershed (acres):
5k. Method of construction:
6. Buffer Impacts (for DWQ)
If project will impact a protected riparian buffer, then complete the chart below. If yes, then individually list all buffer impacts
below. If an impacts require mitigation, then you MUST fill ou ection D of this form.
6a.

Project is in which protected basin?
14Neuse
? Catawba
? Tar-Pamlico
? Randleman
? Other:
6b 6c 6d
.
Bufmpact
ner-
Permt (P) or
Tam; .

Reason
for
im act .

Stream name 6e.

Buffer
miti at ion
r ired? 6f.

Zone 1 impact
(square feet) 6g.

Zone 2 impact
(square feet)

B1 ? T Gs)-V UT to Middle Creek Yes
E] No
Al/Ar
7
?(
.
z
B2 ?P?T ?Yes
[] No

B3 ?P?T ?Yes
? NO
6h. Total buffer impacts
6i. Comments: )";,J +4W #,)zm s4tr-? tom- .( A-T- , .1, 0 R*rro
Page 5 of 5
D. Impact Justification and Mitigation
1. Avoidance and Minimization
la. Specifically describe measures taken to avoid or minimize the proposed impacts in designing project.
At the recommendation of Division of Water Quality staff, a conceptual site plan demonstrating avoidance and
minimization of impact was resubmitted and approved on May 26, 2009.
1 b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques.
The Contractor will follow standards and recommendations in accordance with the most recent NC Sedimentation Control
Commission Erosion and Sediment Control Planning and Design Manual; and all construction will comply with the
requirements set forth in the NC EPA's new construction site activities National Pollutant Discharge Elimination System
,
Phase 11 stormwater permit.
2. Compensatory Mitigation for Impacts to Waters of the U.S. or Waters of the State
2a. Does the project require Compensatory Mitigation for Yes ? No
impacts to Waters of the U.S. or Waters of the State?
2b. If yes, mitigation is required by (check all that apply): DWQ ? Corps

Fc. yes, w hich mitigation option will be used for this
Mitig
ation bank
oject? ? Payment to in-lieu fee program
? Permittee Responsible Mitigation
3. Complete ff Using a Mitigation Bank
3a. Name of Mitigation Bank: r nur rs?...?.. ./.-.,.,.. _ . J7. .
3b. Credits Purchased (attach receipt and letter) Type Buffer Quantity
3c. Comments: A, Rr_cc4rpj--*Z 7gr. rt&*Acm oft- u?3 A
IlJuc /3r r9nr?1 arK ?.?G /a?a?.( /- WAAk_?
4. Complete If Making a Payment to In-lieu Fee Program
4a. Approval letter from in-lieu fee program is attached. ? Yes
4b. Stream mitigation requested: linear feet
4c. If using stream mitigation, stream temperature: ? warm ? cool ?cold
4d. Buffer mitigation requested (DWQ only): square feet
4e. Riparian wetland mitigation requested: acres
4f. Non-riparian wetland mitigation requested: acres
4g. Coastal (tidal) wetland mitigation requested: acres
4h. Comments: Acceptance letter from NC EEP will be forthcoming
5. Complete If Using a Permittee Responsible Mitigation Plan
5a. If using a permittee responsible mitigation plan, provide a description of the proposed mitigation plan.
Page 6 of 6
PCN Form - Version 1.3 December 10, 2008 Version
Permit Number:
(to be provided by DWQ)
Drainage Area Number:
BMP element: Potential problem: How I will remediate the problem:
The inlet device: pipe or The pipe is clogged. Unclog the pipe. Dispose of the
Swale sediment off-site.
The pipe is cracked or Replace the pipe.
otherwise damaged.
Erosion is occurring in the Regrade the swale if necessary to
swale. smooth it over and provide erosion
control devices such as reinforced
turf matting or riprap to avoid
future problems with erosion.
The forebay Sediment has accumulated to Search for the source of the
a depth greater than the sediment and remedy the problem if
original design depth for possible. Remove the sediment and
sediment storage. dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Erosion has occurred. Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems.
Weeds are present. Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than spraying.
The vegetated shelf Best professional practices Prune according to best professional
show that pruning is needed practices
to maintain optimal plant
health.
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 to establish the
ground cover if a soil test indicates
it is necessary.
Weeds are present. Remove the weeds, preferably by
hand. If pesticide is used, wipe it on
the plants rather than spraying.
The main treatment area Sediment has accumulated to Search for the source of the
a depth greater than the sediment and remedy the problem if
original design sediment possible. Remove the sediment and
storage depth. dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Algal growth covers over Consult a professional to remove
50% of the area. and control the algal growth.
Cattails, phragmites or other Remove the plants by wiping them
invasive plants cover 50% of with pesticide (do not spray).
the basin surface.
Form SW401-Wet Detention Basin O&M-Rev.3 Page 2 of 4
Permit Number:
(to be provided by DWQ)
Drainage Area Number:
BMP element: Potential problem: How I will remediate the problem:
The embankment Shrubs have started to grow Remove shrubs immediately.
on the embankment.
Evidence of muskrat or Use traps to remove muskrats and
beaver activity is present. consult a professional to remove
beavers.
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 repair.
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 local NC Division of
damage have occurred at the Water Quality Regional Office, or
outlet. the 401 Oversight Unit at 919-733-
1786.
The measuring device used to determine the sediment elevation shall be such
that it will give an accurate depth reading and not readily penetrate into
accumulated sediments.
When the permanent pool depth reads 5.5 feet in the main pond, the sediment
shall be removed.
When the permanent pool depth reads 4.5 feet in the forebay, the sediment
shall be removed.
BASIN DIAGRAM
ill in the blanks)
Sediment Removal
Bottom El
V Permanent Pool Elevation 448.50
444 Pe manen Pool
------------------Volume Sediment Removal Elevation 443 Volume
443 -ft Min. ------------------------------ ------------ ------
Sediment Bottom Elevation 442 1-ft n.
Storage Sediment
FOREBAY MAIN POND Storage
Form SW401-Wet Detention Basin 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.
Project name:Cambrid eg Village of Apex
BMP drainage area number:I
Print name:Kendall Oliver
Title: Developer/Owner
Address:6736 Falls of Neuse, Suite 220 Raleigh, NC 27615
Phone:
Signatt
Date:
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, J EALIJ , a Notary Public for the State of
0 ( ?? ?? t nh , County of ?)A , do hereby certify that
personally appeared before me this
day of and acknowledge the due execution of the
forgoing wet detention basin maintenance requirements. Witness my hand and official
seal,
*?t6 Et ; ?fil
114 f!
?;••r,??A[?Y •°?'
°. PUBOC
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enrQ 'E?tr?o
SEAL
My commission expires ) _ I I ?'O I I
Form SW401-Wet Detention Basin O&M-Rev.3 Page 4 of 4
Permit Number:
(to he provided hY DGVO)
Drainage Area Number:
Bioretention 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 operation and maintenance procedures:
- Immediately after the bioretention cell is established, the plants will be watered
twice weekly if needed until the plants become established (commonly six
weeks).
- Snow, mulch or any other material will NEVER be piled on the surface of the
bioretention cell.
- Heavy equipment will NEVER be driven over the bioretention cell.
- Special care will be taken to prevent sediment from entering the bioretention cell.
- Once a year, a soil test of the soil media will be conducted.
After the bioretention cell is established, I will inspect it once a month and within 24
hours after every storm event greater than 1.0 inches (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.
BMP element: Potential problems: 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
bioretention cell 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.

The inlet device: pipe,
The pipe is clogged (if _
Unclog the pipe. Dispose of the
stone verge or 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.
Stone verge is clogged or Remove sediment and clogged
covered in sediment (if stone and replace with clean stone.
a plicable).
Form SW401-Bioretention O&M-Rev.3 Page 1 of 4
BMP element:
The pretreatment area
The bioretention cell:
vegetation
The bioretention cell:
soils and mulch
Potential problems:
Flow is bypassing
pretreatment area and/or
gullies have formed.
Sediment has accumulated to
a depth greater than three
inches.
Erosion has occurred.
Weeds are present.
Best professional practices
show that pruning is needed
to maintain optimal plant
health.
Plants are dead, diseased or
dying.
Tree stakes/ wires are present
six months after planting.
Mulch is breaking down or
has floated away.
Soils and/or mulch are
clogged with sediment.
An annual soil test shows that
pH has dropped or heavy
metals have accumulated in
the soil media.
How I will remediate the problem:
Regrade if necessary to route all
flow to the pretreatment area.
Restabilize the area after grading.
Search for the source of the
sediment and remedy the problem if
possible. Remove the sediment and
restabilize the pretreatment area.
Provide additional erosion
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems.
Remove the weeds, preferably by
hand.
Prune according to best professional
practices.
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.
Remove tree stake/ wires (which
can kill the tree if not removed).
Spot mulch if there are only random
void areas. Replace whole mulch
layer if necessary. Remove the
remaining much and replace with
triple shredded hard wood mulch at
a maximum depth of three inches.
Determine the extent of the clogging
- remove and replace either just the
top layers or the entire media as
needed. Dispose of the spoil in an
appropriate off-site location. Use
triple shredded hard wood mulch at
a maximum depth of three inches.
Search for the source of the
sediment and remedy the problem if
possible.
Dolomitic lime shall be applied as
recommended per the soil test and
toxic soils shall be removed,
disposed of properly and replaced
with new planting media.
Form SW401-Bioretention O&M-Rev.3 Page 2 of 4
Permit Number:
(to be provided by DWQ)
Drainage Area Number:
Wet Detention Basin 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.
The wet detention basin system is defined as the wet detention basin,
pretreatment including forebays and the vegetated filter if one is provided.
This system (check one):
® does ? does not
This system (check one):
? does ® does not
incorporate a vegetated filter at the outlet.
incorporate pretreatment other than a forebay.
Important maintenance procedures:
- Immediately 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 (commonly six weeks).
- No portion of the wet detention pond should be fertilized after the first initial
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 wet detention basin.
- If the basin must be drained for an emergency or to perform maintenance, the
flushing of sediment through the emergency drain should be minimized to the
maximum extent practical.
- Once a year, a dam safety expert should inspect the embankment.
After the wet detention pond is established, it should be inspected once a month and
within 24 hours after every storm event greater than 1.0 inches (or 1.5 inches if in a
Coastal County). Records of operation and maintenance should be kept in a known set
location and must 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 rernediate the problem:
The entire BMP Trash/debris is resent. Remove the trash/debris.
The perimeter of the wet Areas of bare soil and/or Regrade the soil if necessary to
detention basin 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. approximately six inches.
Form SW401-Wet Detention Basin O&M-Rev.3 Page 1 of 4
6. Buffer Mitigation (State Regulated Riparian Buffer Rules) - required by DWQ
6a. Will the project result in an impact within a protected riparian buffer that requires
buffer mitigation? ? Yes L No
fib. If yes, then identify the square feet of impact to each zone of the riparian buffer that requires mitigation. Calculate the
amount of mitigation required.

Zone 6c.
Reason for impact 6d.
Total impact
(square feet)
Multiplier 6e.
Required mitigation
(square feet)

6f. Total buffer mitigation required: l 3.
6g. If buffer mitigation is required, discuss what type of mitigation is proposed (e.g., payment to private mitigation bank,
permittee responsible riparian buffer restoration, payment into an approved in-lieu fee fund).
6h. Comments:
Page 7 of 7
BMP element: Potential problem: How 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 e 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 up 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 SWU40l-Level Spreader, Filter Strip, Restored Riparian Buffer O&M-Rev.3 Page 2 of 3
BMP element: Potential problems: How I will remediate the problem:
The underdrain system Clogging has occurred. Wash out the underdrain system.
(if applicable)
The drop inlet Clogging has occurred. Clean out the drop inlet. Dispose of
the sediment off-site.
The drop inlet is damaged Repair or replace the drop inlet.
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-Bioretention O&M-Rev.' ) Page 3 of 4
Permit Number:
(to be provided by DYVQ)
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:Cambridge Village of Apex
BMP drainage area number:2
Print name:Kendall Oliver
Title: Owner/Developer
Address:6736 Falls of Neuse Rd, Suite 220 Raleigh nc 27615
Phone: [phone]
Signa
Date: PtA Y 2 ?, Zoyo
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.
11 ?01? S L, £ninr?Y(' , a Notary Public for the State of
f-S .C • , County of 5o i4wST-o cJ , do hereby certify that
© L C,-N personally appeared before me this 2-
day of ?JA_q °I , and acknowledge the due execution of the
forgoing bioretention maintenance requirements. Witness my hand and official seal,
\\0o?,l 1?6??'y ???i
NOTARY
PUBLIC
lilystON C
trt?ni??
SEAL

My commission expires r QQ, 1l (, 2013
Form SW40 I -Bioretention I&M-Rev. 2 Page 4 of 4
NCDENR Stormwater BMP Manual Chapter Revised 09-28-07
Figure 8-1:
Plan View of a Level Spreader (adapted from Hathaway 2006)
Filter Strip: Could be a riparian buffer, vegetated
Flow Bypass filter strip or restored riparian buffer.
Frc
eceiving
tream
Reinforced Swale
(necessary if level
spreader is designed for
the 1 in/hr storm)
Length = 13' to 130'
(parapet to contour lines)
Figure 8-2:
Profile View of a Level Spreader (adapted from, Hathaway 2006)
Levd spreader Lip
Lsyer of
flow Path -r-.._ #57 Stone
Riparian Winer
or FEW Strip
Channel -,
3 ft 1Nide
Underdran - Sized i 5tnp of
for Site Sod Filter Fal7m
Condrbore - Dram Appropnately 5aed
Into 13ypa5e 5wrale Concrete Footer
Level Spreader 8-2 July 2007
Permit Number:
(to be provided by D 9,Q)
Drainage Area Number:
Filter Strip, Restored Riparian Buffer and Level Spreader
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 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
(NIPC, 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.
BMP element: Potential problem: How I will remediate the roblem:
The entire filter strip Trash/ debris is present. Remove the trash/ debris.
s stem
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 1 of 3
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:Cambrid eg Village of Apex
BMP drainage area number:
Print name:Kendall Oliver
Title:Owner/Development
Address:6736 Falls of Neuse Rd, Suite 220, Raleigh NC 27615
Phone: [phone]
Signature:
Date:
A__y 243 1001
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.
C I err rCT'` , a Notary Public for the State of
L , County of -)o H-OS '1''0 fJ , do hereby certify that
r\61,1( O (, J £ ? personally appeared before me this Z?
day of I- Y , 100 , and acknowledge the due execution of the
forgoing filter strip, riparian buffer, and/or level spreader maintenance requirements.
Witness my hand and official seal,
1. BFNN?.
C A _
NOTARY
PUBLIC
SEAL
My commission expires NI). 14
Y?
Z6 (3
Form SWU401-Level Spreader, Filter Strip, Restored Riparian Buffer O&M-Rev.3 Page 3 of 3
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