20061321 Ver 1_More Info Received_20061023

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Blackburn Consulting Engineering
234 East Main Street
Clayton, NC 27520
Phone: [phone]
Fax: [phone]
October 23, 2006
US Army Corps of Engineers
Raleigh Regulatory Field Office
6508 Falls of the Neuse Road, Ste. 120
Raleigh, NC 27615
Attn: Ms. Jean Manuel
RE: Glen Laurel East Subdivision
DWQ Project # 06-1321
To Whom It May Concern:
NCDENR -DWQ
Parkview Building
2321 Crabtree Boulevard
Raleigh, NC 27604
Attn: Mr, John Dorney
Enclosed are revisions to the application and responses to comments as follows:
1. Level Spreader Calculations and Operations agreement enclosed
2. Impervious calculation table included on enclosed Conceptual Plan drawing
3. Additional Language added to section XIV, that page of application enclosed.
4. Enclosed Conceptual Plan Drawing shows how lots 78-80 can be developed with no
further impacts.
Sincerely,
Sean P. Hem, PLS
Enclosures:
1. Storm Calculations (includes level spreader information)
2. Notarized Operations and Maintenance Agreement
3. Conceptual Plan drawing
4. Revised page 12 of application
OCT 2 3 2006
DENR -WATER QUALITY
iNETIANDS AND STl?RMWATf"R BRANCH

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XI. Stormwater (required by DWQ)
Describe impervious acreage (existing and proposed) versus total acreage on the site. Discuss stormwater
controls proposed in order to protect surface waters and wetlands downstream from the property. If
percent impervious surface exceeds 20%, please provide calculations demonstrating total proposed
impervious level. This subdivision has a minimum lot size of 1/3 acre. Total impervious not effected to
exceed 26%. Additionally, level spreaders are designed at all the runoff outlets using 13' per cfs of a ten
year storm.
XII. Sewage Disposal (required by DWQ)
Clearly detail the ultimate treatment methods and disposition (non-discharge or discharge) of
wastewater generated from the proposed project, or available capacity of the subject facility.
All lots will utilize City sewage disposal usin sg anitary sewer lines.
XIII. Violations (required by DWQ)
Is this site in violation of DWQ Wetland Rules (15A NCAC 2H .0500) or any Buffer Rules?
Yes ^ No X
Is this anafter-the-fact permit application? Yes ^ No X
XIV. Cumulative Impacts (required by DWQ)
Will this project (based on past and reasonably anticipated future impacts) result in additional
development, which could impact nearby downstream water quality? Yes ^ No X
If yes, please submit a qualitative or quantitative cumulative impact analysis in accordance with
the most recent North Carolina Division of Water Quality policy posted on our website at
http://h2o.enr.state.nc.us/ncwetlands. If no, please provide a short narrative description:
The entire property has been reviewed and the plan has been designed to avoid all impacts
except the ones requested in this submittal. There will be no other wetland or buffer impacts to
this site. All lots will be buildable without further impacts. Impervious runoff is low and
hazardous uses are proposed.
XV. Other Circumstances (Optional):
It is the applicant's responsibility to submit the application sufficiently in advance of desired
construction dates to allow processing time for these permits. However, an applicant may
choose to list constraints associated with construction or sequencing that may impose limits on
work schedules (e.g., draw-down schedules for lakes, dates associated with Endangered and
Threatened Species, accessibility problems, or other issues outside of the applicant's control).
No special Circumstances Requested.
~.. _ /2~
Applicant/Agent's Signature Date
(Agent's signature is valid only if an authorization letter from the applicant is provided.)
Page 12 of 12

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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 least 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 damaged 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 pa
-._
Print name: '`~c_- ~i~ ~ ~
Title: ~ ~ ~ ~ a

Signature:
Date: ~ `- f .G ~-
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 , L9~ ~~ ~' ` ~~~G~/®L , a Notary Public for the State of ~~~f ~~t~~ ,
County of ~~ ~~/ , do hereby certify that ~ ~~ fib JCa~8 ~~9~~'
personally appeared before me this 6/~ day of ~,~~~~% , ~-~ ,and acknowledge the due
execution of the for oing wet [wetland] ntion basin maintenance requirements. Witness my hand and
official seal, ~~i~~'
Note ~k~„ NoHt- f `~oiitt8
County Qf,lohu~ton
C. 1. MoNichol
SEAL My commission expires ly'"/ `"`~~' 0~
Page 1 of 1

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 least 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 damaged 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*~1 agree to notify DWQ of any problems with the system or prior to any changes to
the system or responsible party. **until such time as said maintenance is assumed by
Glen Laurel HOA or the Town of Clayton.
Print name: GLEN LAUREL DEVELOPMENT CO. , INC.
Title: Developer
Address: 300 Market St. , Suite 1 20, Chapel Hill NC 2751 6
Phnna• (91 9) 933-4~2 , ~ ~ ~/
Signature: by : r-_~~~ ~ "i~
Date: Octobe~, 2006
Assistant Vice President
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.
1, S . Elaine Hudspeth , a Notary Public for the State of NC
County Eof wake , do hereby certify that
ersonallNaLAe ra ed be oreEmePhisNT2C0. dalof
p Y Pp Y
JAMES M. EARNHARDT, ASSIS'1ANT VP
October 2006 ,and acknowledge the due
execution of the forgoing wet [wetland] detention basin maintenance requirements. Witness my hand and
official seal,
OFFICIAL SEAL
S. ELAINE HtJDSPETH
1dOTpRY PUBLIC ,
wpm COUNTY NC
)~y C~mi~saion Expires
SEAL My commission expires C~` J-
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