20081451 Ver 1_More Info Received_20081017

WITHERS &' RAVENEL
ENGINEERS I PLANNERS 1 SURVEYORS
111 MacKenan Drive
CARY, NORTH CAROLINA, 27511
[phone]
FAX [phone]
TO: NC-Division of Water Quality
2321 Crabtree Boulevard
Raleigh, NC 27604
WE ARE SENDING YOU
? Shop Drawings
? Copy of Letter
® Attached via
? Prints
? Change order
COPIES DATE NO. DESCRIPTION
5 Request for Additional Information - Little Rock Greenway

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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:
Received By:
COPY TO: file SIGNED: Todd Preuninger

DATE 10/17/08 JOR NO. 2070909
ATTENTION Ms C ndi Karol & Ms. Am Chapman
PHONE #
RE: Little Rock Greenwa

-1 1

Courier the following items:
? Plans ? Samples ? Specifications
? Diskette ?
If enclosures are not as noted, kindly notify us at once.
WITHERS L1?? RAVEN EL
ENGINEERS I PLANNERS I SURVEYORS
October 17, 2008
NC-Division of Water Quality
Attn: Ms. Cyndi Karoly and Ms. Amy Chapman
2321 Crabtree Blvd.
Raleigh, North Carolina 27604
Re: Request for Additional information - Little Rock Greenway
W&R Project #: 2070909
DWQ Project #: 08-1451
Dear Ms. Karoly and Ms. Chapman,
We received your request for additional information regarding the proposed Little Rock Greenway. I have
included a brief response to your request below. Your letter asks for the following information:
1) Please provide clear and comprehensive site plans accurately conveying the overall shoulder to
shoulder width of the proposed greenway and the edge of pavement to the edge of pavement
width of the proposed greenway.
Full scale construction drawings are included with the attachments and were e-mailed to your office on
5eptember3dh, 2008.
2) In subsequent e-mails, your office stated that the 1o-foot multi-purpose was excessive and did not
meet the avoidance and minimization criteria of the permitting process.
Included with the attachments is a letterf-om the City ofRaleigh that describes the need and rationale
fora io-foot wide multi-use trail and our efforts to avoid and minimize impacts to the streams and
buffers
We hope that this information will allow you to complete your review of this project. Please feel free to call if
you have questions or require additional information.
Sincerely,
WITHERS & RAVENEL, INC.
cam' / ra ??. ;.
Todd Preuninger 1+'
Senior Biologist J
Attachments:
1) Full-scale construction drawings
2) justification letter from the City of Raleigh (dated October 16, 2008)
3) DWQ On-hold Letter
%\:;*.o
iii MacKenan Drive i Cary, NC 27511 1 tel: [phone] fax: [phone] i www.withersravenet.com
7040 Wrightsville Avenue i Suite 101 i Wilmington, NC 28403 1 tel: [phone] fax: [phone]
Brunswick Surveying 1 1027 Sabbath Home Rd, SW i Supply, NC 28462 1 tel: [phone] i fax: [phone]

October 16, 2008
Ralph Troutman
Withers & Ravenel
111 MacKenan Drive
Cary, NC 27511
Dear Ralph,
This letter is in response to an email exchange between your office and Ms. Amy Chapman of the
NC Division of Water Quality dated September 30, 2008 concerning the width of the Little Rock
Greenway trail.
Below you will find the City's justification to Ms. Chapman's comment stating that a "10' wide trail is
excessive" and "response would be returned to request avoidance/minimization."
The City's Little Rock Greenway Extension project completes a missing link in the Little Rock
Greenway section. Located south of Bragg Street, west of State Street, and north of Peterson Street,
dais extension will link southeast Raleigh and the downtown area with the City's Walnut Creek
Wedand Center and the Walnut Creel: Greenway.
The Walnut Creel: Wetland Center is currently under construction. The site contains extensive
wetlands located near the downtown urban center and will offer an opportunity for the public to
easily explore and learn about the value and significance of wetlands for water quality and wildlife
habitat. The center will include exhibit space, classrooms, office space, and a large deck with opening
expected in Spring 2009.
Little Rock is a tributary of Walnut Creek which traverses the southern section of the City of Raleigh
from west to east. Several miles of the Walnut Creek Greenway already afford recreational
opportunities to citizens of Raleigh. To the east, the greenway currently ends at Rose Lane, just short
of the City's W-Anut Creek Softball Complex. Headed west from the Wetland Center, the greenway
currently ends at Lake Wheeler Road. The City actively pursues designing and constructing additional
segments of the Walnut Creek Greenway. Greenway users will soon be able to travel easterly on the
Walnut Creek Greenway to its intersection with the Neuse River Greenway just south of Poole Road.
Traveling in a westerly direction on the Walnut Creek Greenway, trail users will eventually have the
ability to traverse all the way to I-4140 at the upper reaches of LakeJohnson.
Usage of the Little Rock Greenway is currently limited to citizens in the vicinity of dtis existing
greenvay due to the lack of connectivity, Greenway use is expected to increase dramatically due to
OFFICES ' 222 WEST HARGM STREET • POST OFFICE BOX 590 • RALEIGH. NORTH CAROLINA 271302
the completion of this extension and of the Walnut Creel: Wetland Center, the near future additions
to the Walnut Creek Greemvay, and the increase in residents living in downtown Raleigh. This
increase in use translates into more pedestrians, more joggers, more bicyclists, and more roller
bladers using the greenway simultaneously. In order to minimize potential conflicts between the
various types of greenway users, dhis multi-use greenway requires sufficient width of 10 feet to safely
allo-kv two-direction traffic on tie greenway. For example, a 10 feet width allows the faster users, i.e.,
bicyclist and rollers bladers, to safely pass the slower users such as walkers, joggers, and people using
mobility devices such as wheelchairs.
In specifying a 10 feet wide greenway, die City of Raleigh adheres to the recommendations of the
following sources of transportation design guidelines for all greenway projects. Guidelines related to
the width of multi-use greenway are published by the American Association of State Highway
Transportation Officials (AASHTO), the North Carolina Department of Transportation (NCDOT),
and the Federal Highway Administration (FI-RVA). In its Guide for the Development of Bigycle
Facilities, published in 1999, AASHTO recommends a 10 feet wide "...paved width for shared use
path..." NCDOT, in its North Carolina Bicycle Facilities Planning and Design Guidelines,"
published January 1994, indicates multipurpose recreational trails "...narrower than 3 m (10ft) are
not recommended as they do not permit safe and frequent passing opportunities..." Similarly, the
FH%VA, in an on-line version of its "FMWA Course on Bicycle and Pedestrian Transportation"
Lesson 10, found at littp://safetv.niwa.dot.gov/PED Bll<I-'/univcourse/swlessl0.htm, also states
"The minimum width for two-directional trails is 3 meters (10 feet)..."
As mentioned, the greemvay project will provide a paved path for multipurpose use and two
direction traffic. The width of the paved padi should be based upon die widest operating space of
the multiple types of users. In-line skaters command die widest operating space of G
feet, followed closely by bicyclists and mobility devices such as wheelchairs which require 4 feet of
operating space. Thus a bicyclist passing or meeting an in-line skater would require the 10 feet paved
surface. For the bicyclist, die bicycle tires would ride within the center of die 4 feet wide operating
space; for die wheelchair, die wheels would reside near the edges of the operating space envelop,
widi one wheel near the edge of the paved surface. To provide for two direction traffic and for
passing, the operating space of bicycles and wheelchairs would require a minimum paved width of
eight feet. But since the wheels of die wheelchair are at the outer edges of die operating space, an
inadvertent move by die wheelchair operator may result in the outer wheel leaving the paved surface
and engaging die shoulder. The wheel leaving die pavement may cause die wheelchair to tip over
with an S feet wide pavement. A 10 feet wide pavement would provide a wider surface for operating
the wheelchair and minimize the possibility of die outer wheel leaving the pavement accidentally.
In its discussion regarding die recommended paved widdi for a multi-use path, AASHTO suggests
certain conditions may exist that would permit reducing the paved width to S feet. These conditions
include:
1. Wien a low bicycle traffic volume is expected, even on peak use times.
2. When most of the traffic will be bicycles, with only an occasional use by pedestrians.
3. Men die horizontal and vertical geometry of die greenway provide adequate sight
distance to permit safe passing opportunities.
4. Wien routine maintenance activities do not subject die edges of the paved surfaces to
loading conditions that would damage the edge of pavement.
The City does not anticipate a low volume of bicycle traffic, in fact, we anticipate greenway traffic
will increase due to the connectivity provided. Further, the City fully expects both bicyclists and
pedestrians will comprise a large share of the volume of tie overall traffic.
OFFICES • 222 WEST HARGETT STREET • POST OFFICE BOX 590 ' RALEIGH. NORTH CAROLINA 27602

As evidenced by the construction drawings, every effort to avoid impacting riparian buffers within the
limits of this project has been avoided with the vast majority of the greenway residing outside the
riparian buffer.
The primary impetus pushing the greenway into the buffer is where crossings are necessary. It is
important that the width of the greenway remain the same as minimizing the width at these locations
would create a safety hazard for the users. The existing parking lot at Sta. 18+50 and Sta 21+75 is
also an area where buffers are impacted. Seeking to minimize impacts to the buffers as well as the
parlang lot, you have introduced a horizontal alignment consisting of a series of curves and tangents.
These curves do not provide adequate sight distances to permit passing in this area without the 10
feet wide surface.
In addition, the maintenance of greenways affects the desired width of die paved surface as well as
the width of its bridges. A 10 feet wide trail and 10 feet wide bridge allows for maintenance veinicles
to enter these facilities to clear debris as needed and after storm damage and allows for other types of
equipment to enter when repaving of asphalt is necessary. An 8 feet wide paved surface is an
insufficient width to allow for these activities to take place as needed without causing damage to die
edges of the paved surface.
Please submit this information to Ms. Chapman to help convey the City's position on this matter. We
would also be available to meet to show her the project and discuss this issue. Please feel free to
contact me at [phone] with comments or questions.
Sincerely,
-V? W,/?
Vic Lebsock
Senior Greenway Planner
City of Raleigh Parks & Recreation Department
Cc; File Copy
OFFICES • 222 WEST HARGETT STREET - POST OFFICE Box 590 • RALEIGH, NORTH CAROLINA 27602
0y William G. Ross Jr., Secretary
> ` r North Carolina Department of Environment and Natural Resources
-i
Coleen H. Sullins, Director
Division of Water Quality
September 29, 2008
DWQ Project # 08-1451
Wake County
CERTIFIED MAIL: RETURN RECEIPT REQUESTED
Ms. Diane Sauer
City of Raleigh - Parks and Recreation Department
222 West Hargett Street
Raleigh, NC 27601
Subject Property: Little Rock Greenway
Walnut Creek [030402, 27-34-(4), C, NSW]
REQUEST FOR MORE INFORMATION
Dear Ms. Sauer:
On September 22, 2008, the Division of Water Quality (DWQ) received your application dated
September 22, 2008, to fill or otherwise impact 11,761 square feet of Zone I Neuse River basin protected
riparian buffers and 3,485 square feet of Zone 2 Neuse River basin protected riparian buffers to construct
the proposed greenway system at the site. 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 place this project on hold as incomplete until we receive this additional information. If we do not
receive the requested information, your project will be formally returned as incomplete. Please provide
the following information so that we may continue to review your project.
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 214.0506 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 provide clear and comprehensive site plans accurately conveying the overall shoulder to
shoulder width of the proposed greenway and the edge of pavement to edge of pavement width of
the proposed greenway.
Please submit this information within 30 calendar days of the date of this letter. If we do not receive this
requested information within 30 calendar days of the date of this letter, your project will be withdrawn
and you will need to reapply with a new application and a new fee.
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.
40 1 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 http:/Ai2o.enr.state.ne.us/ncwetlands
NorthCarolina
Naturally
An Equal Opportunity/Affirmative Action Employer- 50% Recycled/10% Post Consumer Paper
City of Raleigh
s Page 2 of 2
September 29, 2008
Sincerely,
Cyndi Karoly, Supervisor
401 Oversight/Express Review Permitting Unit
CBK/?m
cc: Lauren Witherspoon, DWQ Raleigh Regional Office
USACE Raleigh Regulatory Field Office
File Copy
Central Files
Todd Preuninger, Withers & Ravenel, 11 I MacKenan Drive, Cary, NC 27511
Filename: 081451LittleRockGreenway(Wake)On Hold
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- INDEX OF SHEETS
~ ~ m~ GENERAL INDEX -ABBREVIATIONS & LEGEND 1
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J BUILDING CODE SUMMARY 3
Q OC ~ ~ 3 PLAN AND PROFILE 4
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Rr ~ ~ PLAN AN D PROFILE 5
R KEN A TIN LUTHER KING BLVD Oq DER M R p~
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ti ~ MISCELLANEIOUS ILLISTRATIONS 7
~ ~ N DETAILS 8
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~ N ~ o ~ GRFENWAY DETAILS 9
Z m-a BRAGG ST PRO~~CT SITS
~ ~ ~ 9, ~ C~ N ~ EROSION CONTROL DETAILS 10
W E
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VARIABLE WIDTH 10~ VARIABLE WIDTH
MAXIMUM CLEARING LIMITS MAXIMUM CLEARING LIMITS
6' 6' SHOULDER AND BENCH PLACEMENT
SHOULDER AND BENCH PLACEMENT
2' SUB BASE 2 I_2 MINIMUM DEPTH fH
F LIMITS SLOPE TOWARD CREEK OF GRUBBING LAT CUT FILL 1/B" / FT GRADE POINT 2' SUB BASE
1I-- 1/B" 12 CUT 1 LIMITS CUT 1/8"
EXISTING GRADE 12 i ~ ~ , „ ~ 1 FILL FLAT CUT
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1 - ~1
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MIN. 6" ABC
T MAXIMUM GRUBBING LIMITS MAXIMUM GRUBBING LIMITS LING LIMI7S
GREENWAY TRAIL PATH
SHALLOW CUT FILL ~
NTS 11
VARIABLE WIDTH
MAXIMUM CLEARING LIMITS
VARIABLE WIDTH DITCH 2' BENCH VARIABLE WIDTH NATURAL GRADE MAXIMUM GRUBBING LIMITS
10' 6' SHOULDER VARIABLE WIDTH
MAXIMUM CLEARING AND GRUBBING LIMITS
EXISTING GRADE - - - _ - - EXISTING GRADE
TO DAYLIGHT 1 1 - TO DAYLIGHT - - - - - - _ - , _ - - - 3 3 - 6' SHOULDER 3' DITCH
TO DAYLIGHT - 1 CUT 2" I-2 - - - - " ' - - - - - - -
2 t2 2' SUB BASE SLOPE TOWARD CREEK 1 LIMITS ~ 1/B" / FT GRADE POINT
LIMITS CUT/FILL - - - - - - - - - - ~ - - - - - EXISTING GRADE
18 ~ i ~1 - TO DAYLIGHT -
1 ~r~1 1~ ~i - 2 3 3
2
MIN. 6" ABC
GREENWAY TRAIL PATH
T 2 DEEP CU NTS 11
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~ 6' SHOULDER 6' SHOULD
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CAW JANUARY 11. 2008 rl> TYPICA ® W' THERS & RAVENEL Sheet No. PICAL SECTIONS ENGINEERS I PLANTERS I SURVEYORS `
Checked By Job No. i 111 MacKenan Drive Cary, North Carolina 27511 tel: [phone] fax: [phone] www.witheisravenel.com
w&R 02070909.00 CITY OF RALEIGH WAKE COUNTY NORTH CAROLINA 0
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