20070453 Ver 1_More Info Received_20070412

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KELLER ENVIRONMENTAL
ENVIRONMENTAL CONSULTANTS
7921 Haymarket Lane, Ralei~, NC
(919) 8447437
Fax [phone]
To: NC Division of Water Quality
401 Oversight and Express Permits Unit
Attn: Staff
2321 Crabtree Boulevard
Suite 250
Raleigh, North Carolina 27604-2260
Re: Panther Rock Subdivision
PCN RE-SUBMITTAL
DWQ 07-0010
Knightdale, NC
April 12, 2007
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On behalf of the applicant, Panther Rock, LLC, please find attached supplemental information requesting written
concurrence from the United States Army Corps of Engineers (COE) and the North Carolina Division of Water Quality
(DWQ) that the activities proposed below may precede utilizing Nationwide Permit 39. We are requesting to place culverts
and headwalls in 1 stream and 1 subterranean sewer line in another stream for the purpose of constructing Panther Rock
Subdivision Phase I. The proposed road crossing location will also include a sewer line. A third aerial sewer crossing is also
proposed. 61 homesites are proposed for this subdivision. These proposed impacts are contained in the attached packet of
information.
PROJECT SUMMARY
Pr " Name PANTHER ROCK
Pro'ect T SUBDIVISION
Owner / licant Panther Rock, LLC, cJo Pablo Reiter
Cou Wake
Nearest Town htdale
Wat Name Neuse River
Basin /Sub-basin Neuse 03-04-02
Index Number 27 22.5
Class C, NSW
IMPACT SUMMARY
Stream Im act acres 0.016 acxes Went ; 0.004 acres tem ra
Neuse River Buffer Im acts acxes 0.29 acres ermanent
Welland Im acres 0.046 tem
Total Im d to Waters of the State acres 0.016 acres mranent ; 0.0.50 acres tem ra
Total Stream Im d linear feet 113 linear feet ermanent; 30 feet tem ora
Please contact me at [phone] (office) or [phone] (cell) or is r~.kellerenvironmental.com if you have any
questions or require any additional information.
Sincerely,
KELLER ENVIRONMENTAL, LLC

Jay Keller
Principal
Attachments:
Panther Rock Phase I Site Plan Level Spreader Worksheet
March 26, 2007 DWQ Request for More Information letter Signed 8 notarized Level Spreader Operations i~
DWQ Re-submittal Letter Panther Rock 4-11-07 Maintenance agreement

C~ WAT ~ Michael F. Easley, Governor
O~O
9QG William G. Ross Jr., Secretary
~. North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E. Director
Q "C Division of Water Quality
March 26, 2007
DWQ Project # 07-0453
Wake County
CERTIFIED MAIL: RETURN RECEIPT REQUESTED
Mr. Pablo Reiter
Panther Rock, LLC
6736 Falls of the Neuse Road, Suite 201
Raleigh, NC 27615
Subject Property: Panther Rock Subdivision
Ut to Neuse River [030402, 27-(22.5), C, NSW]
REQUEST FOR MORE INFORMATION
Dear Mr. Reiter:
On March 12, 2007, the Division of Water Quality (DWQ) received your application dated March 9,
2007, to fill or otherwise impact 0.046 acres of 404/wetland, 143 linear feet of perennial stream (113
linear feet permanent impact, 30 linear feet temporary impact), and 7,750 square feet of Zone 1 Neuse
River basin protected riparian buffers and 5,000 square feet of Zone 2 Neuse River basin protected
riparian buffers to construct the proposed residential subdivision. The DWQ has determined that your
application was incomplete and/or provided inaccurate information as discussed below. The DWQ will
require additional information in order to process your application to impact protected wetlands and/or
streams on the subject property. Therefore, unless we receive five copies of the additional information
requested below, we will have to move toward denial of your application as required by 15A NCAC 2H
.0506 and will place this project on hold as incomplete until we receive this additional information.
Please provide the following information so that we may continue to review your project.
Additional Information Requested:
1. Please show all stream impacts including all fill slopes, dissipaters, and bank stabilization on the
site plan.
2. Please show all wetland impacts including fill slopes on the site plan.
Please indicate proposed lot layout as overlays on the site plan at a scale of no smaller than 1"=50'
Also, show wetlands and streams on the same plan so we can determine if additional impacts are
likely.
4. Please clearly indicate all Zone 1 and Zone 2 buffers, and impacts to these, on the site plan.
5. Please provide diffuse flow provision measures, applicable worksheets and a signed and notarized
Operations and Maintenance agreement for the site.
6. Please indicate all stormwater outfalls on the site plan.
401 Oversight/Express Review Permitting Unit
1650 Mail Service Center, Raleigh, North Carolina 27699-1650
2321 Crabtree Boulevard, Suite 250, Raleigh, North Carolina 27604
Phone: [phone] /FAX [phone] /Internet: httn://h2o.encstate.nc.us/ncwetlands
Np°c hCarolina
~aturally
An Equal Opportunity/Affirmative Action Employer - 50% Recycled/10% Post Consumer Paper

Panther Rock, LLC
Page 2 of 2
March 26, 2007
Please contact the DWQ within three weeks of the date of this letter to verify that you have received this
letter and to provide us with a date that we may expect to receive this requested information. If we do not
receive this requested information within one week of the date you indicate it will be forthcoming, your
project will be withdrawn and you will need to reapply with a new application and a new fee. Please
contact me in writing and Lauren Cobb of the DWQ Raleigh Regional Office. If we do not hear from you
within three weeks, we will assume that you no longer want to pursue this project and we will consider
the project as withdrawn.
This letter only addresses the application review and does not authorize any impacts to wetlands, waters
or protected buffers. Please be aware that any impacts requested within your application are not
authorized (at this time) by the DWQ. Please call Ms. Cyndi Karoly or Mr. Ian McMillan at 919-733-
1786 if you have any questions regarding or would like to set up a meeting to discuss this matter.
Sincerely,
Cyndi Karoly, Supervisor
401 Oversight/Express Review Permitting Unit
CBK/~m
cc: Lauren Cobb, DWQ Raleigh Regional Office
USACE Raleigh Regulatory Field Office
File Copy
Central Files
Jay Keller, Keller Environmental, 7921 Haymarket Lane, Raleigh, NC 27615
Filename: 070453PantherRockSD(Wake)On_Hold

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KEGLER ENVIRONMENTAL
ENVIRONMENTAL CONSULTANTS
April 11, 2007
Cyndi Karoly
NC Division of Water Quality
401 Wetlands WQ Certification Unit
1650 Mail Service Center
Raleigh, North Carolina 27699-1650
Re: Panther Rock Subdivision
Neuse R. Buffer Rules & 401 Certificate Re-Submittal
DWQ Project # 07-0453 Wake County
Knightdale, North Carolina
Dear Ms. Karoly:
We are submitting the additional information requested from written correspondence on
March 26, 2007. The proposed Neuse River basin riparian buffer (NRBRB) impacts are subject
to 15A NCAC 02B .0233. Impacts associated with this project include 143 linear feet of perennial
stream, 7,750 square feet of Zone 1, and 5,000 square feet of Zone 2 NRBRB areas. Please
find attached supplemental information requesting written concurrence from the United States
Army Corps of Engineers (COE) and the North Carolina Division of Water Quality (DWQ) that the
activities proposed below may precede utilizing Nationwide Permit 39. We have addressed your
included written comments in the following paragraphs.
1. Please show all stream impacts including all fill slopes, dissipaters, and bank
stabilization on the site plan.
Please refer to the attached Panther Rock Phase I Site Plan. Utilization of oversized
culverts alleviates the use of dissipater pads and further stream impacts. The proposed
stream impacts associated with Phase I are entirely within the hatched sewer and road
crossing area.
2. Please show all wetland impacts including fill slopes on the site plan.
The four jurisdictional wetlands within the proposed Panther Rock Phase I project are
fairly small and located within NRB Zone 1. No wetland impacts are anticipated for
Phase I.
3. Please indicate proposed lot layout as overlays on the site plan at a scale of no
smaller than 1 "=50'. Also, show wetlands and streams on the same plan so we
can determine if additional impacts are likely.
Please refer to the attached Panther Rock Phase I Site Plan.

Neuse R. Buffer Rules & 401 Certificate Re-Submittal
Panther Rock Subdivision
April 1 1, 2007
Page 2 of 2
4. Please clearly indicate all Zone 1 and Zone 2 buffers, and impacts to these, on
the site plan.
Please refer to the attached Panther Rock Phase I Site Plan. The proposed Zone 1
and 2 buffer impacts associated with the road crossing are hatched accordingly.
5. Please provide diffuse flow provision measures, applicable worksheets and a
signed and notarized Operations and Maintenance agreement for the site.
Please refer to the attached level spreader worksheet and signed and notarized
Operations and Maintenance agreement for the 56-foot concrete level spreader
easterly adjacent to the proposed road crossing. Additionally, no rise curbs will be
utilized along the entrance road to Panther Rock Phase I. These BMP's will promote
diffuse flow into the stream paralleling the approximately 1,700-foot road.
6. Please indicate all stormwater outfalls on the site plan.
stormwater associated with the entrance road (Street A) will utilize no rise curbs to
promote sheet flow. The proposed detention pond and subsequent 56-foot concrete
level spreader will provide stormwater control for the areas adjacent to Street A.
Remaining areas, such as the sections adjacent to Street C, drain towards the east and
away from the NRBRB areas.
If you should have questions or require additional clarification please feel free to contact
me at 844-7437 (office), 749-8259 (cell) or email: jay kellerenvironmental.com.
Sincerely,
Keller Environmental, LLC
Gi~!~ ~~~
Jay Keller
Principal
Cc: Peter Cnossen, PE
Attachments:
• Panther Rock Phase I Site Plan
• March 26, 2007 DWQ Request for More Information letter
• Level Spreader Worksheet
• Signed and notarized Level Spreader Operations and Maintenance agreement

DWQ Project No. 01 " o`} 5'~
DIVISION OF WATER QUALITY LEVEL SPREADER WORKSHEET (112007)
I. PROJECT INFORMATION (please complete the following information):
Project Name : h~ n fh~~ ~ o~?~' - ~~ <,~ Z
Contact Person: P~ f P ~ moss ~~,
Level Spreader ID: /
Level Spreader Length S6 ft.
Drainage Area ~~• / ac,
Impervious Area S. 6 ac.
Forebay Area so cu ft.
Maximum Filter StriplBuffer Slope 6
grass
Phone Number (9i''~') 3 2 ~- it
(perpe:ndicular to flow)
(on-sike and off-site drainage to the level spreader)
(on-site: and off-site drainage to the level spreader)
(0.2% of the contributing impervious surface area)
(6% for forested, leaf littler cover, 8% for thick ground cover
Max. Discharge from 1"IHr Storm y 3 cfs
Max. Discharge to Level Spreader S. ( cfs
Filter Stripl Zone 2 Buffer Vegetation ~~ ; c k (thick ground cover or grass; canopied forest with leaf litter
groundcover)
Pre-treatment or Bypass Method Used Prc--~r~--!
II. REQUIRED ITEMS CHECKLIST
Initial in the space provided to indicate the following design requirements have been met and supporting documentation is attached. If a
requirement has not been met, attach an explanation of why. At a minimum, a complete stormwater management plan submittal includes
a worksheet for each BMP, design calculations, plans and specifications showing all BMPs and outlet structure details, a detailed
drainage plan and a fully executed operation and maintenance agreement. An incomplete submittal package will result in a request for
additional information and will substantially delay final review and approval of the project.
AppllCants Initials
.~~ Project Site was visited prior to designing level spreader.
___~Date of the Site visit. PLEASE ATTACH TIME-DATED DIGITAL PHOTO OF EXISTING BUFFER CONDITIONS.
Level spreader is at least 13 ft. per cfs for thick ground cover or grass or 65 ft per cfs in canopied forest with leaf
litter for 50-foot buffer; 50 ft per cts for 100-foot buffer, c,r 40 ft. per cfs for 150-foot buffer.
~~i~ Pre-Formed Scour Holes are on flat slopes only.
~°G~ No structures are located in protected buffers (must meet no practical alternatives criteria).
Design Alternative (if any) and Bypass method used:
~Y/~ Bypass conveyance method is specified and plan details and calculations are provided.
N~ Alternative design option is specified and plan details and calculations are provided.
P~ Discharge to level spreader and subsequent filter strip is hydraulically and spatially separate from the bypass
discharge.
~~- No structures are located in protected buffers.
/ Plan details for the bypass and outlets are provided.
lr The operation and maintenance agreement includes annual erosion and vegetation repair.
~ The operation and maintenance agreement signed and notarized by the responsible party is provided.

LEVEL SPREADER OPERATION AND MAINTENANCE AGREEMENT
The level spreader is defined as an elongated, level threshold, designed to diffuse stormwater runoff.
Maintenance activities shall be performed as follows:
1. After construction and until vegetation has been established, level spreader(s) shall be inspected after
every rainfall. Thereafter, level spreader(s) shall be inspected at leasf every month and more
frequently during the fall season and after heavy rainfall events:
a. Accumulated sediment; leaves, and trash shall be removed, and repairs made if required.
b. Inspect level spreader(s) for evidence of scour, undercutting, settlement of the structure, and
concentrated flows downhill from the level spreader(s).
c. A level elevation shall be maintained across the entire flow-spreading structure at all times.
Repair or replace the level spreader if it is damaged.
d. Mow vegetative cover to a height of six (6) inches and prune plants if they cover over half of the
level spreader surface.
e. Repair eroded areas and replace/replant dead or d<~maged vegetation.
2. The contractor should avoid the placement of any material on and prevent construction traffic across
the structure. If the measure is damaged by construction traffic, it shall be repaired immediately.
3. Inspect and repair the collection system (e.g., catch basins, pipes, swales, riprap) four (4) times a year
to maintain proper functioning.
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,
Print name: ~~C-o 2.,~__l ~ i~
Title: ["1~N 4G~r?
Address: 636 ~ ~~LS ~~ NCc~s ~ ~ ~ u~ ~a~.~t~f{ N Z?-6tS
Phone: ~( I°( `~-~ Z ~~-~ 4 ~
Signature:
Date: ~ -3 % ~oi'~-~
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, _~ ~ f ~ {. ~ ~-- _, a Notary Public for the State of !`>J ~_
County of ~~ ., -~ , do hereby certify that ~ +~ ~ L ~C { + ~~~ r'
personally appeared before me this I E day of /~~A, ~~1,__ C~;.~ ' Z_, and acknowledge the due
execution of the forgoing wet [wetland] detention basin maintenance requirements. Witness my hand and
official seal,
SEAL
My cornmission expires f l ° I ` ~-~a~
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