20110661 Ver 1_More Info Received_20120523

•
Civil Engineering I Construction Management I Land Planning
Ms Karen Higgins
NCDWQ — Division of Water Quality
1650 Mail Service Center
Raleigh North Carolina 27699
RE Request for More Information
Chastain Subdivision (DWQ Project #2011 066 1)
Dear Karen
221 N SALEM ST SUITE 200
PO BOX 1062
APEX NC 27502
Office 919 387 1174
Fax [phone]
wwwjonescnossen com
May 22 2012
I I — i) ca Lo I
I have received your letter Request for More Information dated May 17 2012 and am herein providing the
following responses for continuation of staff's review of the project
1 I have shown the grading for the high flow by pass on the attached exhibits The side slopes of the
by pass channel are shown at 3 1 slopes and the revised the impact quantities have been updated
accordingly The PCN form has been revised to reflect the impact changes as well
2 A splitter box detail is attached The existing yard inlet will be used as the splitter box so a
representative detail has been modified to show the split flow
3 All sheets have been signed and sealed
4 A CD is attached with TIFF format copies of the plans
Five (5) copies of the additional information has been included with this submittal It is hoped that this
information is sufficient for approval following your review If you have any questions or need anything
else please let me know
Sincerely
to 141
0—tio.^
Peter D Cnossen P E
Jones & Cnossen Engineering PLLC
Cc Divida Johnson — Omega Management
Attachments
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MAY 2 3 2012
DENR rIVATER QUALITY
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ESTIMATED SUMMARY Of IMPACTS
STREAM BANK - 30 Lff
ZONE I - 1,253 SF
ZONE 2 - 1,083 5f
IMPACTS INCLUDE REPAIR Of
EXISTING EROSIONAL FEATURE AND
CONSTRUCTION Of HIGH FLOW
BY-PASS CHANNEL.
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SEPTEMBER 21, 201 1 1
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Office Use Only:
Corps action ID no.
DWQ project no.
Form Version 1.4 January 2009
Pre - Construction Notification (PCN) Form
A. Applicant Information
1. Processing
1a. Type(s) of approval sought from the Corps:
E] Section 404 Permit El Section 10 Permit
1b. Specify Nationwide Permit (NWP) number: or General Permit (GP) number.
1c. Has the NWP or GP number been verified by the Corps? __FE1
Yes ❑ No
1 d. Type(s) of approval sought from the DWQ (check all that apply):
El 401 Water Quality Certification — Regular ❑ Non -404 Jurisdictional General Permit
401 Water Quality Certification — Express X❑ Riparian Buffer Authorization
1 e. Is this notification solely for the record
because written approval is not required?
For the record only for DWQ
401 Certification:
❑ Yes ❑ No
For the record only for Corps Permit:
❑ Yes ❑ No
1f. Is payment into a mitigation bank or in -lieu fee program proposed for
mitigation of impacts? If so, attach the acceptance letter from mitigation bank
or in -lieu fee program.
❑ Yes ❑X No
1g. Is the project located in any of NC's twenty coastal counties. If yes, answer 1h
below.
E] Yes ❑X No
1 h. Is the project located within a NC DCM Area of Environmental Concern (AEC)?
�❑ Yes NX No
2. Project Information
2a. Name of project:
Chastain 11
2b. County:
Wake
2c. Nearest municipality / town:
Raleigh
2d. Subdivision name:
Chastain
2e. NCDOT only, T.I.P. or state project no:
3. Owner Information
3a. Name(s) on Recorded Deed:
Chastain of Raleigh Community Assoc. Inc.
3b. Deed Book and Page No.
DB 10933, PG 0684
3c Responsible Party (f °rLLC if
applicable):
Omega Association Management
3d. Street address:
1010 Buck Jones Road
3e. City, state, zip:
Raleigh, North Carolina 27606
3f. Telephone no.:
919 -461 -0102
3g. Fax no.:
919 - 461 -0106
3h. Email address:
info @omegamanagement.com
Page 1 of 10
PCN Form — Version 1.4 January 2009

4. Applicant Information (if different from owner)
4a. Applicant is:
❑X Agent ❑ Other, specify:
4b. Name:
Omega Association Management
4c. Business name
. (if applicable):
Omega Association Management
4d. Street address:
1010 Buck Jones Road
4e. City, state, zip:
Raleigh, North Carolina, 27606
4f. Telephone no.:
919 -461 -0102
4g: Fax no.:
919 -461 -0106
4h. Email address:
info @omegamanagement.com
5. Agent/Consultant Information (if applicable)
5a. Name:
Peter Cnossen, P.E.
5b. Business name
(if applicable):
Jones & Cnossen Engineering, PLLC
5c. Street address:
221 North Salem Street, Suite 001
5d. City, state, zip:
Apex, North Carolina, 27502
5e. Telephone no.:
919 -387 -1174
5f. Fax no.:
919- 387 -3375
5g. Email address:
peter @jonescnossen.com
Page 2 of 10

B. Project Information and Prior Project History
1. Property Identification
1a. Property identification no. (tax PIN or parcel ID):
PIN: 1732625483
1 b. Site coordinates (in decimal degrees):
I Latitude: 35.734 Longitude. - 78.5396
1c. Property size:
71.51 acres
2. Surface Waters
2a. Name of nearest body of water to proposed project:
Tributary of Crabtree Creek
2b. Water Quality Classification of nearest receiving water:
C;NSW
2c. River basin:
Neuse River Basin
3. Project Description
3a Qescrbe the existing conditions on the site and the general land use in the vicinity of the project at the time of this
application:
The site is dedicated open space behind residential lots within the Chastain subdivision; a portion of which is an existing 50' Neuse River Buffer.
Stormwater is discharged above the NRB but has eroded a relatively deep channel from the FES to the existing stream channel. The surrounding
area consists of open grassed areas and woods. The topography of the site area has significant slope.
3b. List the total estimated acreage of all existing wetlands on the property: 0
3c. List the total estimated linear feet of all existing streams (intermittent and perennial) on the property` 4,800
3d. Explain the purpose of the proposed project:
To repair the erosional feature along the bank of the UT to Crabtree Creek.
3e. Describe the overall project in detail, including the type of equipment to be used:
The proposed repair of the erosional feature will consist of grading a uniform slope following by installation of geotexf a fabric and rip -rap.
Oe vl,.
4. Jurisdictional Determinations
4a. Have jurisdictional wetland or stream determinations by the
Corps or State been requested or obtained for this property /
project (including all prior phases) in the past?
❑X Yes ❑ No ❑ Unknown
Comments:
4b. If the Corps made the jurisdictional determination, what type
of determination was made?
El Preliminary ❑X Final
4c. If yes, who delineated the jurisdictional areas?
Name (if known):
Agency /Consultant Company:
Other: Soil & Environmental Consultants
4d. If yes, list the dates of the Corps jurisdictional determinations or State determinations and attach documentation.
5. Project History
5a. Have permits or certifications been requested or obtained for
this project (including all prior phases) in the past?
❑X yes ❑ No ❑ Unknown
5b. If yes, explain in detail according to "help file" instructions.
This project was approved for construction in 2002. Documentation regarding the buffers and wetlands is not available.
6. Future Project Plans
6a. lsthts agphased protect?'
El Yes ❑X No
6b. If yes, explain.
Page 3of10
PCN Form —Version 1.4 January 2009

C. Proposed Impacts Inventory
1. Impacts Summary
1 a. Which sections were completed below for your project (check all that apply):
❑ Wetlands ❑ Streams —tributaries ❑X 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.
Wetland impact
number
Permanent (P) or
Temporary
2b.
Type of impact
2c.
Type of wetland
2d.
Forested
2e.
Type of jurisdiction
Corps (404;10) or
DWQ (401, other)
2f.
Area of
impact
(acres)
W1
Choose one
Choose one
Yes /No
-
W2
Choose one
Choose one
Yes /No
-
W3
Choose one
Choose one
Yes /No
-
W4 -
Choose one
Choose one
Yes /No
-
W5 -
Choose one
Choose one
Yes /No
-
W6 -
Choose one
Choose one
Yes /No
-
2g. Total Wetland Impacts:
2h. Comments:
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
number
Permanent (P) or
Temporary (T)
3b.
Type of impact
3c.
Stream name
3d.
Perennial (PER) or
intermittent (INT)?
3e.
Type of
jurisdiction
3f.
Average
stream
width
(feet)
3g.
Impact
length
(linear
feet)
S1
Choose one
S2
Choose one
S3 -
Choose one
S4
Choose one
-
S5 -
Choose one
-
S6 -
Choose one
-
3h. Total stream and tributary impacts
3i. Comments:
Page 4 of 10
PCN Form — Version 1.4 January 2009

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 indivi ually list all open water impacts below.
4a. 4b. 4c. 4d. 4e.
Open water Name of waterbody
impact number (if applicable) Type of impact Waterbody Area of impact (acres)
Permanent (P) or type
Temporary
01
Choose one
Choose
02
Choose one
Choose
03
Choose one
Choose
04
Choose one
Choose
4f. Total open water impacts
4g. Comments:
5. Pond or Lake Construction
If pond or lake construction proposed, the complete the chart below.
5a. 5b. 5c. 5d. 5e.
Pond ID number Proposed use or Wetland Impacts (acres) Stream Impacts (feet) Upland
purpose of pond (acres)
Flooded Filled Excavated Flooded Filled Excavated
P1
Choose one
P2
Choose one
5f. Total:
5g. Comments:
5h. Is a dam high hazard permit required?
❑ 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 any impacts require miti ation, then you MUST fill out Section D of this form.
6a. Project is in which protected basin?
X❑ Neuse ❑ Tar - Pamlico ❑ Catawba ❑ Randleman ❑ Other:
6b..
Buffer Impact
6c:
Reason for impact
6d.
Stream name
6e.
Buffer
6f.
Zone 1
6g.
Zone 2
number —
mitigation
impact
impact
Permanent (P) or
required?
(square
(square
feet )
feet
Temporary
B1 P
Buffer Repair
Tributary of Crabtree Creek
No
1,253
1,083
B2
Yes /No
B3
Yes /No
B4
Yes /No
B5 -
Yes /No
B6
Yes/No
6h. Total Buffer Impacts:
1,253
1,083
6i. Comments: Buffer impacts are estimated based on observation of existing field conditions.
rage DOT 1 U

D. Impact Justification and Mitigation
1. Avoidance and Minimization
1a. Specifically describe measures taken to avoid or minimize the proposed impacts in designing project.
The erosional area is confined so smaller equipment will be used to make the repair. The use of smaller equipment should allow us to work mainly
within the impacted area which will minimize further disturbance of the existing NRB. Thus, we expect that areas outside the erosional feature will be
protected at all times. The impact area will be flagged to provide the contractor with a clear reference to the work zone so that existing vegetation with
woody species are protected.
1 b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques.
All construction will be utilizing small equipment because access is limited. Also, work will be done upland from the existing NRB which will minimize
further impact to the area.
2. Compensatory Mitigation for Impacts to Waters of the U.S. or Waters of the State
2a. Does the project require Compensatory Mitigation for
impacts to Waters of the U.S. or Waters of the State?
❑ Yes ❑X No
2b. If yes, mitigation is required by (check all that apply):
❑ DWQ ❑ Corps
2c. If yes, which mitigation option will be used for this
project?
❑ Mitigation bank
El Payment to in -lieu fee program
El Permittee Responsible Mitigation
3. Complete if Using a Mitigation Bank
3a. Name of Mitigation Bank:
3b. Credits Purchased (attach receipt and letter)
Type: Choose one
Type: Choose one
Type: Choose one
Quantity:
Quantity:
Quantity:
3c. Comments:
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:
Choose one
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:
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 10
PCN Form —Version 1.4 January 2009

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
ED Yes OX No
buffer mitigation?
6b. 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.
6c.
6d.
6e.
Zone
Reason for impact
Total impact
Multiplier
Required mitigation
(square feet)
(square feet)
Zone 1
3 (2 for Catawba)
Zone 2
1.5
6f. Total buffer mitigation required:
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 10

E. Stormwater Management and Diffuse Flow Plan (required by DWQ)
1. Diffuse Flow Plan
1 a. Does the project include or is it adjacent to protected riparian buffers identified
Yes ❑ No
within one of the NC Riparian Buffer Protection Rules?
1 b. If yes, then is a diffuse flow plan included? If no, explain why.
The repair of the erosional feature does not include a new level spreader because of the site constraints
❑ Yes ❑X No
that include closely spaced houses that limit access, relatively steep existing embankment slopes and
erodible soil conditions. However, the repair will include construction of a plunge pool to help reduce
stormwater velocity while also providing some diffuse flow characteristics.
2. Stormwater Management Plan
2a. What is the overall percent imperviousness of this project?
2b. Does this project require a Stormwater Management Plan?
❑ Yes ❑ No
2c. If this project DOES NOT require a Stormwater Management Plan, explain why:
2d. If this project DOES require a Stormwater Management Plan, then provide a brief, narrative description of the plan:
2e. Who will be responsible for the review of the Stormwater Management Plan?
3. Certified Local Government Stormwater Review
3a. In which local government's jurisdiction is this project?
❑ Phase II
❑ NSW
3b. Which of the following locally- implemented stormwater management programs
El USMP
apply (check all that apply):
❑ Water Supply Watershed
❑ Other:
3c. Has the approved Stormwater Management Plan with proof of approval been
❑ Yes ❑ No
attached?
4. DWQ Stormwater Program Review
❑Coastal counties
❑HQW
4a. Which of the following state - implemented stormwater management programs apply
❑ ORW
(check all that apply):
❑Session Law 2006 -246
❑ Other.
4b. Has the approved Stormwater Management Plan with proof of approval been
❑ Yes ❑ No
attached?
5. DWQ 401 Unit Stormwater Review
5a. Does the Stormwater Management Plan meet the appropriate requirements?
❑ Yes ❑ No
5b. Have all of the 401 Unit submittal requirements been met?
❑ Yes ❑ No
Page 8 of 10
PCN Form —Version 1.4 January 2009

F. Supplementary Information
1.
Environmental Documentation (DWQ Requirement)
1 a.
Does the project involve an expenditure of public (federal /state /local) funds or the
❑ Yes
❑ No
use of public (federal /state) land?
1 b.
If you answered "yes" to the above, does the project require preparation of an
environmental document pursuant to the requirements of the National or State
❑ Yes
❑ No
(North Carolina) Environmental Policy Act (NEPA/SEPA)?
1 c.
If you answered "yes" to the above, has the document review been finalized by the
State Clearing House? (If so, attach a copy of the NEPA or SEPA final approval
❑ Yes
E] No
letter.)
Comments:
2.
Violations (DWQ Requirement)
2a.
Is the site in violation of DWQ Wetland Rules (15A NCAC 2H .0500), Isolated
Wetland Rules (15A NCAC 2H .1300), DWQ Surface Water or Wetland Standards,
❑ Yes
❑X No
or Riparian Buffer Rules (15A NCAC 2B .0200)?
2b.
Is this an after - the -fact permit application?
❑ Yes
❑X No
2c.
if you answered "yes" to one or both of the above questions, provide an explanation of the violation(s):
3.
Cumulative Impacts (DWQ Requirement)
3a.
Will this project (based on past and reasonably anticipated future impacts) result in
❑Yes
❑X No
additional development, which could impact nearby downstream water quality?
3b.
If you answered "yes" to the above, submit a qualitative or quantitative cumulative impact analysis in accordance with the
most recent DWQ policy. If you answered "no," provide a short narrative description.
The
site of the area requiring repair is within a fully developed residential subdivision.
4.
Sewage Disposal (DWQ Requirement)
4a. 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.
Page 9of10
PCN Form — Version 1.4 January 2009

5. Endangered Species and Designated Critical Habitat (Corps Requirement)
5a. Will this project occur in or near an area with federally protected species or
habitat?
❑ Yes ❑ No
5b. Have you checked with the USFWS concerning Endangered Species Act
impacts?
❑ Yes ❑ No
5c. If yes, indicate the USFWS Field Office you have contacted.
-
5d. What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical
Habitat?
6. Essential Fish Habitat (Corps Requirement)
6a. Will this project occur in or near an area designated as essential fish habitat?
❑Yes ❑ No
6b. What data sources did you use to determine whether your site would impact Essential Fish Habitat?
7. Historic or Prehistoric Cultural Resources (Corps Requirement)
7a. Will this project occur in or near an area that the state, federal or tribal
governments have designated as having historic or cultural preservation
status (e.g., National Historic Trust designation or properties significant in
North Carolina history and archaeology)?
❑ Yes ❑ No
7b. What data sources did you use to determine whether your site would impact historic or archeological resources?
8. Flood Zone Designation (Corps Requirement)
8a. Will this project occur in a FEMA- designated 100 -year floodplain?
❑ Yes ❑ No
8b: If yes, explain how project meets FEMA requirements:
8c. What source(s) did you use to make the floodplain determination?
Applicant/Agent's Printed Name
Date'
A pp Meant/ g ent's Signature
(Agent's signature is valid only if an authorization
letter from the applicant is provided,)
Page 10 of 10

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4. INSTALL G -8" OF WASHED STONE (NO. 57) ON BOTTOM TO
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5. INSTALL RIP -RAP (CLASS 2) AND SHAPE TO PROMOTE ENERGY
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