HomeMy WebLinkAbout20080067 Ver 4_More Info Received_20120112WITHERS &' RAVENEL
ENGINEERS I PLANNERS I SURVEYORS
1410 COMMONWEALTH DRIVE SUITE io1
WILMINGTON NORTH CAROLINA 28403
(910) 256 9277
FAX (910) 256 2584
TO NC Division of Water Quality — 401 Wetlands Unit
512 N Salisbury Street Stn Floor
Raleigh NC 276o4
WE ARE SENDING YOU
❑ Shop Drawings
❑ Copy of Letter
LETTET, a�uF Y AN MST QL
DATE 1/9/12
6 02100349 00
ATTENTION Ms Karen Higgins
PHONE #
RE Alston Pond — On Hold Letter Response
DWQ Project #o8 oo67 Ver
02100349 00
Alston Pond On Hold Letter Response
1
1/9/12
0210034900
® Attached ❑ Under separate cover via
❑ Prints ❑ Plans ❑ Samples
❑ Change order ❑ Diskette ❑
the following items
❑ Specifications
COPIES
DATE
NO
DESCRIPTION
1/9/12
02100349 00
Alston Pond On Hold Letter Response
1
1/9/12
0210034900
CD of On Hold Response
THESE ARE TRANSMITTED as checked below
® For approval ❑ Approved as submitted ❑ Resubmit copies for approval
❑ For your use ❑ Approved as noted ❑ Submit copies for distribution
❑ As requested ❑ Returned for corrections ❑ Return corrected prints
❑ For review and comment ❑
❑ FOR BIDS DUE 20 ❑ PRINTS RETURNED AFTER LOAN TO US
REMARKS
Karen — Please note that I have provided a copy of the enclosed response directly to Lauren
Witherspoon _
COPY TO Fi le
SIGNED Troy Beasley
If enclosures are not as noted kindly notify us at once
urryK WATER QUALITY
KS DS AND STORMWATER BRANCH
WITHERS &- RAVENEL
ENGINEERS 1 PLANNERS I SURVEYORS
January 9 2012
NC Division of Water Quality
Attn Ms Lauren Witherspoon
C/O Ms Karen Higgins
1650 Mail Service Center V J�
Raleigh NC 27699 1650 SAN ®
Re Alston Pond Subdivision N,�
DWQ # 08 006 DWQ On Hold Letter dated January 6 2012 `"NDSANDST pR Dq(JTi
7 4 ERB%Ctj
Dear Ms Witherspoon
This letter is in response to the On Hold Letter issued by NC DWQ on January 6 2012 Please see
below for responses to the items addressed in your letter
1) Page 2 of the cover letterand Plan Sheet #i propose 23 If of temporary stream impacts However
the PCN apphcation proposes 27 if of temporary stream impacts Please explain the discrepancy
and revise and resubmit accurate and consistentmformation
The 27 if of temporary stream impacts documented Section C 3 was a typographical error The
proposed temporary stream impacts are 23 if and Section C 3 has been revised in the attached PCN
2) Page 2 of the cover letter and Plan Sheet #1 propose 24 63o sq ft of Zone i buffer impacts
However the PCN application proposed 34 63o sq ft ofZone i bufferimpacts Please explain the
discrepancy and revise and resubmit accurate and consistent Information
Please note that per DWQ s request the design of the culvert for the Hilltop Needmore Road extension
has been revised As a result of the revision the new buffer impacts for this crossing consist of
18 839 sq ft of permanent impacts to Zone 1 and 9 242 sq ft of permanent impacts to Zone 2 The
revised PCN is attached to this letter
3) Section C 61 is not an accurate statement Please revise and resubmit Page 7 of 12 of the PCN
application with more accurate Information
Section C 61 of the PCN has been revised to Include the following statement Because buffer impacts
for the northern road crossing (Sheet B) are less than 1/3 of an acre and grading within zone 2 sewer
lines less than 40 if and stormwater conveyances are considered an allowable uses the applicant is
not proposing buffer mitigation for these buffer impacts Since buffer impacts for the Hilltop
Needmore Road Extension (Sheet A) are greater than 1/3 acre buffer mitigation will be required and is
proposed as documented in Section C 3b & 6f The revised PCN and revised Impact Plans are
attached to this letter
4) This office does not believe that the permanent impacts to the stream (Impact #3) as depicted on
SheetA were quantified correctly The two stream segments that seem to be incorrect are directly
adjacent to the termini of the proposed impact where the existing stream is within the area of the
proposed reconnection Please explain why these segments would not be considered a
pennanent impact
iii MacKenan Drive I Cary NC 275111 tel 919 469 3340 I fax 919 467 6008 I www withersravenel com
1410 Commonwealth Drive I Suite 1o1 I Wilmington NC 28403 I tel 910 256 9277 I fax 910 256 2584
416 D Gallimore Dairy Road I Greensboro NC 27409 1 tel 336 993 5504 I fax 919 4676008
N C Engineering Board No C o832
WITHERS &- RAVENEL
ENGINEERS I PLANNERS I SURVEYORS
Please note that the culvert design has been revised per your request to use a junction box and
culvert extension to connect the stream into the culvert beneath the Hilltop Needmore Road crossing
Due to site and design constraints the downstream end of the culvert could not be designed to
discharge into the northern terminus of the section of stream below the road crossing Specifically
the culvert was installed per the original design which was authorized by the previously issued 401
WQC (DWQ Project #o8 oo67 Ver 3) In order to discharge into the northern terminus of the stream
below Hilltop Needmore Road the discharge channel would have to run along the toe of slope of the
road fill This would result in the a severe go* angle in the channel as it exists the culvert which
would increase the chances of significant erosion or even failure during heavy rain events Also this
would result in a perpendicular connection to the stream Per item #5 of the On Hold letter NC DWQ
believes that perpendicular connections could have adverse affects on the stream channel
Therefore there is not an effective design alternative to the proposed design The proposed design
will have a greater angle of connection to the stream resulting in a more gradual transition from the
culvert to the stream and avoiding adverse impacts to the stream
5) Please explain how additional impacts to the buffer are not warranted at the locations where np
rap on the stream bank is proposed at both ends of the proposed stream connection Will a
contractor be able to place np rap on the stream bank at these locations without impacting
additional bufferbeyond the footpnnt of the np rap
The stream in question is relatively narrow ( ±5 in width) Therefore the contractor will be able to
place the proposed rip rap on the western bank of the stream by accessing the stream from the
eastern side within the proposed impact area and reach across the stream with the construction
equipment (i a front end loader excavator etc) for placement of the rip rap Final placement of the
rip rap will be completed by hand to avoid disturbance of the stream bed A note has been added to
the plans to notify the contractor of the construction methods for the proposed rip rap Therefore
there will be no additional buffer impacts to the western stream bank will occur from the placement of
rip rap on the western bank of the stream
6) Please explain how the neargoI tum and the perpendicular reconnection from the proposed pipe
to the stream at the termini of the proposed impact will not have adverse affects on the stream
channel Please provide np rap specifications for the termini of the proposed pipe
Please note that the culvert design has been revised per your request to use a junction box and
culvert extension to connect the stream into the culvert beneath the Hilltop Needmore Road crossing
The proposed design has alleviated the 90 and perpendicular connections to the stream and
provides a greater angle of the connections The revised impact plans along with the revised PCN
are attached to this letter
7) Item E(2d) of the PCN form for this project states "The Stormwater Management Plan has been
provided as an Appendix " However the stormwatermanagementplan was notprovided Please
provide a complete stormwater management plan including the completed BMP Supplement
Form for each proposed BMP as well as all of the required items listed m the form Failure to
provide a complete stormwater management plan in the next submittal will result in a return of
this application
The stormwater management plan for this project was approved under the previously issued 401 WQC
for the Alston Pond project (DWQ Project #o8 oo67 Ver 3) The revisions to the Hilltop Needmore
Road crossing did not result in a modification to the previously approved stormwater management
ill MacKenan Drive I Cary NC 275111 tel 919 469 3340 1 fax 919 467 6008 I www withersravenel com
1410 Commonwealth Drive ( Suite 1o1 I Wilmington NC 28403 1 tel 910 256 9277 1 fax 910 256 2584
416 D Gallimore Dairy Road I Greensboro NC 27409 1 tel 336 993 5504 1 fax 919 467 6008
N C Engineering Board No C 0832
WITHERS &' RAVENEL
ENGINEERS I PLANNERS I SURVEYORS
plan Therefore re submittal of the stormwater management plan is not necessary Section E 2d has
been revised in the attached PCN to state The stormwater management plan for this project was
approved under the previously issued 401 WQC for the Alston Pond project (DWQ Project # 08 0067
Ver 3) The revisions to the Hilltop Needmore Road crossing did not result in a modification to the
previously approved stormwater management plan A copy of the revised PCN is attached to this
letter
Additional Information
Per DWQ s request the culvert design has been revised to use a junction box and culvert extension to
connect the stream to the culvert beneath the Hilltop Needmore Road crossing The modification of
the culvert design has resulted in revisions to the proposed wetland and buffer impacts
The following Impact Table documents the revised impacts as well as the cumulative impacts
Alston Pond Revised Impact
Table
Sheet
Impact
#
Permanent
Perennial
Stream
Impacts
Temporary
Intermittent
Stream
Impacts
Permanent
Zone i
Buffer
Impacts
Permanent
Zone 2
Buffer
Permanent
Wetland
Impacts
Temporary
Wetland
Impacts
#1
—Impacts
9 242 sf
(Revised)
#1A
o 015 ac
(Revised)
A
#2
18 839 sf
(Revised)
#3
2971f
(Revised)
#4
456 sf
#5
1 191 sf
#6
3 707 sf
B
#7
2 503 sf
#8
0 005 ac
C
#9
o oil ac
#10
4 665 sf
D
#11
o o14 ac
#12
o oo3 ac
#13
426 sf
#14
1485 sf
#15
23 if
E
#16
668 sf
#17
668 sf
#18
285 sf
#19
61 sf
F
#20
2 553 sf
Totals
297 if
23 if
23 344 sf
23 405 sf
o 034 ac
o o14 ac
111 MacKenan Drive I Cary NC 275111 tel 919 469 3340 1 fax 919 467 6008 I www withersravenel com
1410 Commonwealth Drive I Suite 101 I Wilmington NC 28403 1 tel 910 256 9277 1 fax 910 256 2584
416 D Gallimore Dairy Road I Greensboro NC 27409 I tel 336 993 5504 I fax 919 467 6008
N C Engineering Board No C 0832
WITHERS & RAVENEL
ENGINEERS I PLANNERS I SURVEYORS
As a result of the modification of the culvert design the current Permit Modification Request will result
In the approval of 297 if of permanent stream impacts 27 if of temporary stream impacts o 034 acres
of permanent wetland impacts o 014 acres of temporary wetland impacts 23 344 sq ft of permanent
Zone 1 buffer impacts and 23 405 sq ft of permanent Zone 2 buffer Impacts
Please feel free to contact me if you have any questions or require additional Information to complete
your review of the application
Sincerely
Troy Beasley
Environmental Scientist
WITHERS & RAVENEL INC
Attachments —
1) Revised PCN Form
2) Revised Overall Site Plan with Impacts
3) Revised Impact Sheet A
ill MacKenan Drive I Cary NC 275111 tel 919 469 3340 I fax 919 467 6008 I www withersravenel com
1410 Commonwealth Drive I Suite 1o1 I Wilmington NC 28403 1 tel 910 256 9277 1 fax 910 256 2584
416 D Gallimore Dairy Road I Greensboro NC 27409 I tel 336 993 5504 I fax 919 467 6008
N C Engineering Board No C 0832
O�O� W ATF9OG
O <
Office Use Only
Corps action ID no
DWQ project no
Form Version 1 3 Dec 10 2008
Page 1 of 12
PCN Form — Version 1 3 December 10 2008 Version
Pre - Construction Notification PCN Form
A Applicant Information
1
Processing
la
Type(s) of approval sought from the
Corps
®Section 404 Permit El Section 10 Permit
lb Specify Nationwide Permit (NWP) number NWP 29 or General Permit (GP) number
1c
Has the NWP or GP number been verified by the Corps?
® Yes
❑ No
1 d
Type(s) of approval sought from the DWQ (check all that apply)
® 401 Water Quality Certification — Regular ❑ Non -404 Jurisdictional General Permit
[:1401 Water Quality Certification — Express ® Riparian Buffer Authorization
le
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
® No
1g
Is the project located in any of NC s twenty coastal counties If yes answer 1 h
below
❑ Yes
® No
1h
Is the project located within a NC DCM Area of Environmental Concern (AEC)?
❑ Yes
® No
2
Project Information
2a
Name of project
Alston Pond Subdivision
2b
County
Wake
2c
Nearest municipality / town
Fuquay Vanna
2d
Subdivision name
2e
NCDOT only T I P or state
project no
3
Owner Information
3a
Name(s) on Recorded Deed
North Broad Street LLC
3b
Deed Book and Page No
DB 12671 DP 0810
3c
Responsible Party (for LLC if
applicable)
Tim Smith
3d
Street address
100 Weston Estates Way
3e
City state zip
Cary NC 27513
3f
Telephone no
919 481 3000
3g
Fax no
3h
Email address
tim @prestondev com
Page 1 of 12
PCN Form — Version 1 3 December 10 2008 Version
4
Applicant Information (if different from owner)
4a
Applicant is
❑ Agent ❑ Other specify
4b
Name
4c
Business name
(if applicable)
4d
Street address
4e
City state zip
4f
Telephone no
4g
Fax no
4h
Email address
5
Agent/Consultant Information (if applicable)
5a
Name
Troy Beasley
5b
Business name
(if applicable)
Withers and Ravenel
5c
Street address
1410 Commonwealth Drive Suite 101
5d
City state zip
Wilmington NC 28403
5e
Telephone no
910 256 9277
5f
Fax no
9102562 84
5g
Email address
tbeasley@withersravenel com
Page 2 of 12
PCN Form — Version 1 3 December 10 2008 Version
B Project Information and Prior Project History
1 Property Identification
1a Property identification no (tax PIN or parcel ID)
PIN #s 0658523920 0658317536
lb Site coordinates (in decimal degrees)
Latitude 35 6262765 Longitude 78 8132158
(DD DDDDDD) ( DD DDDDDD)
1c Property size
±148 acres
2 Surface Waters
2a Name of nearest body of water (stream river etc) to
Basal Creek
proposed project
2b Water Quality Classification of nearest receiving water
B NSW (Stream Index #27 43 15 3
2c River basin
Neuse River Basin
3 Project Description
3a Describe 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 approximately 75% forested and 25% agricultural fields A small residential community is located to the north
NC Hwy 55 is located to the west and Basal Creek borders the property to the east
3b List the total estimated acreage of all existing wetlands on the property
±9 62 acres
3c List the total estimated linear feet of all existing streams (intermittent and perennial) on the property
±4 579 If
3d Explain the purpose of the proposed project
The purpose of the proposed project is to construct a residential subdivision
3e Describe the overall project in detail including the type of equipment to be used
The overall project includes the construction of a residential community Large grading equipment will be used to install
the infrastructure (i a roads sewer BMPs) and prepare the site for construction of the residential homes and apartments
4 Jurisdictional Determinations
4a Have jurisdictional wetland or stream determinations by the
Corps or State been requested or obtained for this property /
®Yes El No El Unknown
project (including all prior phases) in the past
Comments
4b If the Corps made the jurisdictional determination what type
❑ Preliminary ® Final
of determination was made?
4c If yes who delineated the jurisdictional areas?
Agency /Consultant Company Withers and Ravenel
Name (if known) Todd Preuninger
Other
4d If yes list the dates of the Corps jurisdictional determinations or State determinations and attach documentation
Corps JD — 6/13/2008 (AID #200800680)
DWQ Buffer Determination — March 20 2007 (Project # NBRRO 07 028)
5 Project History
5a Have permits or certifications been requested or obtained for
® Yes ❑ No ❑ Unknown
this project (including all prior phases) in the past?
5b If yes explain in detail according to help file instructions
NWP 3 & 29 — issued 6/13/2008 — AID# 200800680
401 WQC and Buffer Authorization — issued 8/26/2008 — DWQ Project # 08 0067 Ver 2
401 WC and Buffer Authorization — issued 4/19/2011 — DWQ Project #08 0067 Ver 3
Page 3 of 12
PCN Form — Version 1 3 December 10 2008 Version
�6 Future Project Plans
6a Is this a phased project? ® Yes ❑ No
6b If yes explain
The subdivision will be constructed in Phases However the impacts for the entire project are being permitted as a single
project
Page 4 of 12
PCN Form — Version 1 3 December 10 2008 Version
C Proposed Impacts Inventory
1 Impacts Summary
1 a Which sections were completed below for your project (check all that apply)
® Wetlands ® 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 — Permanent
Type of impact
Type of wetland
Forested
(Corps 404 10
Area of impact
P or Temporary T
if known
DWQ —non 404 other
acres
Impact 1A ® P ❑ T
Permanent / Fill
Headwater Forest
® Yes
❑ No
® Corps
® DWQ
0 015 ac
Impact 8 ® P ❑ T
Permanent / Fill
Headwater Forest
® Yes
❑ No
® Corps
® DWQ
0 005 ac
Impact 9 ® P ❑ T
Permanent / Fill
Headwater Forest
® Yes
❑ No
® Corps
® DWQ
0 011 ac
Impact 11 ❑ P ® T
Sewer
Construction
Headwater Forest
® Yes
❑ No
® Corps
® DWQ
0 014 ac
Impact 12 ® P ❑ T
Permanent / Fill
Headwater Forest
® Yes
❑ No
® Corps
® DWQ
0 003 ac
2g Total wetland impacts
0 048 ac
2h Comments Impacts to wetlands will occur from rehabilitation of an existing dam to meet dam safety requirements
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
3b
3c
3d
3e
3f
3g
Stream impact
Type of impact
Stream name
Perennial
Type of jurisdiction
Average
Impact
number Permanent
(PER) or
(Corps 404 10
stream
length
(P) or Temporary (T)
intermittent
DWQ — non 404
width
(linear
(INT)?
other)
(feet)
feet)
Impact 3 ® P ❑ T
Fill / Culvert
UT to Basal
® PER
® Corps
5
297 If
Creek
❑ INT
® DWQ
Impact 15 ❑ P ® T
Sewer Crossing
UT to Basal
Creek
❑ PER
® INT
® Corps
® DWQ
3
23 If
3h Total stream and tributary impacts
320 If
31 Comments
Page 5 of 12
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 individually list all open water impacts below
4a
Open water impact
number — Permanent
P) or Temporary T
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 pond or lake construction proposed then complete the chart below
5a
Pond ID
number
5b
Proposed use or purpose of
pond
5c
Wetland Impacts (acres)
5d
Stream Impacts (feet)
5e
Upland
(acres)
Flooded
Filled
Excavated
Flooded
Filled
Excavated
Flooded
P1
P2
5f Total
5g Comments
5h Is a dam high hazard permit required
❑ Yes ❑ No If yes permit ID no
51 Expected pond surface area (acres)
5j Size of pond watershed (acres)
5k Method of construction
Page 6 of 12
PCN Form — Version 1 3 December 10 2008 Version
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 mitigation then you MUST fill out Section D of this form
6a
® Neuse ❑ Tar Pamlico ❑ Other
Project is in which protected basin?
❑ Catawba ❑ Randleman
6b
6c
6d
6e
6f
6g
Buffer impact number
— Permanent (P) or
Reason for
Buffer
Zone 1 impact
Zone 2 impact
Temporary (T)
impact
Stream name
mitigation
(square feet)
(square feet)
required?
Impact 1 ® P ❑ T
C oss rig
UT to Basal Creek
®Nos
N/A
9 242 sq ft
Impact 2 ® P ❑ T
C oss rig
UT to Basal Creek
839
® Nos
18 sq ft
N/A
Impact 4 ® P ❑ T
Channel
UT to Basal Creek
®Nos 456
sq ft
N/A
Grading and
❑ Yes
Impact 5 ® P ❑ T
outfall
UT To Basal Creek
® No
N/A
1 191 sq ft
structure
Impact 6 ® P ❑ T
C oss rig
UT To Basal Creek
® Nos
N/A
3 707 sq ft
Impact 7 ® P ❑ T
C oss rig
UT To Basal Creek
®Nos 2
503 sq ft
N/A
Impact 10 ® P ❑ T
Grading
UT To Basal Creek
® Yes s
N/A
4 665 sq ft
Impact 13 ® P ❑ T
Cot uction
UT To Basal Creek
® Nos
N/A
426 sq ft
Impact 14 ® P ❑ T
Cot uction
UT To Basal Creek
485
®Nos
1 sq ft
N/A
Impact 16 ® P ❑ T
Co ewerion
UT To Basal Creek
® Nos
N/A
668 sq ft
Impact 17 ® P ❑ T
Grading
UT To Basal Creek
® Yes s
N/A
668 sq ft
Impact 18 ® P ❑ T
Channel
UT To Basal Creek
No
®Nos
285 sq ft
Impact 19 ® P ❑ T
Bypass
Channel
UT To Basal Creek
® Nos
61 sq ft
N/A
Impact 20 ® P ❑ T
Grading
UT To Basal Creek
® Nos
N/A
2 553 sq ft
6h Total buffer impacts
23 344 sq ft
23 405 sq ft
61 Comments Because buffer impacts for the northern road crossing (Sheet B) are less than 1/3 of an acre and grading within
zone 2 sewer lines less than 40 If and stormwater conveyances are considered an allowable uses the applicant is not
proposing buffer mitigation for these buffer impacts Since buffer impacts for the Hilltop Needmore Road Extension (Sheet A)
is greater than 1/3 acre buffer mitigation will be required and is proposed as documented in Section C 3b & 6f
D Impact Justification and Mitigation
1 Avoidance and Minimization
1a Specifically describe measures taken to avoid or minimize the proposed impacts in designing project
Prior to site plan development the applicant requested that a detailed wetland delineation be conducted so that impacts to
wetlands and waters could be minimized A stream channel bi sects the property and in order to access high ground
impacts were unavoidable Impacts from the Hilltop Needmore Road extension crossing were minimized by crossing the
channel at a nearly perpendicular angle and utilizing 2 1 back slopes (Sheet A) A headwall was utilized to avoid additional
wetland impacts from the northern road (Sheet B) Backslopes to stabilize lot fill were designed at a 2 1 slope to minimize
wetland impacts as well The greenway trail was designed to utilized elevated pedestrian bridges at wetland and stream
Page 7 of 12
PCN Form — Version 1 3 December 10 2008 Version
crossings to further minimize wetland impacts
1b Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques
Head walls will be used to stabilize fill at the northern road crossings and pedestrian bridges will be used for greenway
crossings Also silt fencing will be installed around all disturbed areas to prevent sediment from escaping the site and
entering downstream waters and wetlands
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 ❑ 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
❑ Payment to in lieu fee program
❑ Permittee Responsible Mitigation
3 Complete if Using a Mitigation Bank
3a Name of Mitigation Bank Stream Mitigation — EBX EM LLC
Buffer Mitigation — Wddlands Neuse River Riparian Buffer & Nutrient Umbrella Mitigation Bank
3b Credits Purchased (attach receipt and letter)
Type Stream &
Buffer
Quantity Stream 594 If
Buffer 70 380 sq ft
3c Comments Copies of Letters of Reservation from both mitigation banks are attached as Appendices
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
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 8 of 12
PCN Form — Version 1 3 December 10 2008 Version
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
® Yes ❑ 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
Hilltop Needmore Road
Crossing
18 839 sq ft
3 (2 for Catawba)
56 517 sq ft
Zone 2
Hilltop Needmore Road
Crossing
9242 sq ft
1 5
13 863 sq ft
6f Total buffer mitigation required
70 380 sq ft
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)
Buffer mitigation will be provided through purchase of riparian buffer mitigation from Wddlands Neuse River Riparian
Buffer & Nutrient Umbrella Mitigation Bank A copy of the Letter of Reservation has been provided as an Appendix
6h Comments
Page 9 of 12
PCN Form — Version 1 3 December 10 2008 Version
E
Stormwater Management and Diffuse Flow Plan (required by DWQ)
1
Diffuse Flow Plan
1a
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
®Yes E] No
Comments
2
Stormwater Management Plan
2a
What is the overall percent imperviousness of this project?
31 %
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
The stormwater management plan for this project was approved under the previously issued 401 WQC for the Alston Pond
project (DWQ Project # 08 0067 Ver 3) The revisions to the Hilltop Needmore Road
crossing did not result in a
modification to the previously approved stormwater management plan
❑ Certified Local Government
2e
Who will be responsible for the review of the Stormwater Management Plan?
❑ DWQ Stormwater Program
® DWQ 401 Unit
3
Certified Local Government Stormwater Review
3a
In which local government s jurisdiction is this project?
❑ Phase II
3b
Which of the following locally implemented stormwater management programs
❑ NSW
❑ 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
attached?
❑ Yes ® No
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 10 of 12
PCN Form — Version 1 3 December 10 2008 Version
F
Supplementary Information
1
Environmental Documentation (DWQ Requirement)
la
Does the project involve an expenditure of public (federal /state /local) funds or the
❑ Yes
® No
use of public (federal /state) land?
lb
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)'?
1c
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
letter )
❑ Yes
❑ No
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
® No
or Riparian Buffer Rules (15A NCAC 2B 0200)?
2b
Is this an after the fact permit application?
❑ Yes
® 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
® 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
This is a single and complete project with no additional phases proposed at this time
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 11 of 12
PCN Form — Version 1 3 December 10 2008 Version
5
Endangered Species and Designated Critical Habitat (Corps Requirement)
5a
Will this project occur in or near an area with federally protected species or
❑ Yes ® No
habitat?
5b
Have you checked with the USFWS concerning Endangered Species Act
❑ Yes ® No
impacts?
El Raleigh
5c
If yes indicate the USFWS Field Office you have contacted
❑ Asheville
5d
What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical
Habitat?
W &R reviewed the NC OneMap Viewer GIS website located at http / /www nconemap net/Default aspx ?tabid =286 to
identify if any potential occurrence of endangered species on or near the proposed project The review of the GIS
database did not identify any recent occurrences of endangered species or critical habitat on the subject property or
within 0 5 miles of the project The previous issuance of NWPs 3 & 29 documents that the proposed project will not
impact endangered species or critical habitat
It should also be noted that this project was previously permitted which documents that the project will not result in
impacts to Endangered Species or Critical Habitat
6
Essential Fish Habitat (Corps Requirement)
6a
Will this project occur in or near an area designated as essential fish habitats
7[- Yes ®No
6b
What data sources did you use to determine whether your site would impact Essential Fish Habitat?
There are no waters designated as EFH in Wake County
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
❑ Yes ® No
status (e g National Historic Trust designation or properties significant in
North Carolina history and archaeology)?
7b
What data sources did you use to determine whether your site would impact historic or archeological resources?
There are no historic structures located on the project site
8
Flood Zone Designation (Corps Requirement)
8a Will this project occur in a FEMA designated 100 year floodplain?
FEJ es ® No
8b
If yes explain how project meets FEMA requirements
8c What source(s) did you use to make the floodplain determination? FEMA FIRM Panel 0658J
Troy Beasley
Withers and Ravenel
1 /9/12
Applicant/Agent sprinted Name
Date
Applicant/Agent s Signature
(Agents signature is valid only if an authorization letter from the applicant
is provided )
Page 12 of 12
PCN Form — Version 1 3 December 10 2008 Version
13VH01p'831313NH3S - Ad *1 :6Z:1 ZIOZ'60 A— ..,'AOp.on - 6MD'L1.11-1T'dryl —.Pu N doln!H \OIOZ SdW1 L3YdN \6.!11!—d PlNJ VOld \GHOd -OISW - -'I "ld- 6K'001 \OKO- 01 \01\%H
�1
II •,1 �;
a
aim
wI W i 1.i�
.C4u Ee"�!w\r
•ix,Ft�— - .l.i�i�
_w- xMty
I I
I I I I
I I I I I I
IMPACT #1A
I I I
PER�VIAN�NT I I\
WETANDS+IMPACT
�70 S� (0.0 (5 AO \\ \
r
Ir
ibmww
\ .o
RIP -RIP STREAM BANK WICLASS 1
r
r RIP -RAP, 18" THICK. HAND PLACE I +
ONLY TO ENSURE NO STREAM �\
t r r DISTURBANCE - NO RIP RAP SHALL i i PROFOSE91
r I BE PL ACED BELOW THE OHW r I RIP RAP CHi NEI
iii II r r i i II k�� TO§STREAM�HIGH
i t rr r r r I JF. v FLOW PYPASS ,
r
EP'N ZON 2
IMPACT #1 IMPACT #2 IMPACT #3 IMPACT #4 IMPACT #5
PERMANENTZONE2 PERMANENTZONEI PERMANENT PERENNIAL PERMANENTZONEI PERMANENT ZONE 2
BUFFER IMPACT BUFFERIMPACT STREAM IMPACT BUFFERIMPACT BUFFERIMPACT
9,242 SF (0.212 AC) 18,839 SF (0.432 AC) 297 LF 456 SF (0.010 AC) 1,191 SF (0.027 AC)
1,177 SF 0.027 AC
p
Jl..1LL. I Illl,ll = 'iU IL.
ALSTON POND SHEET A WITHERS &- RAVENEL
IMPACTS #1 - #5 ENGINEERS I PLANNERS I SURVEYORS
FU UAY- VARINA WAKE COUNTY North Carolina mM�,,.om.a u�x oror., rssn o- - „„