20181286 Ver 1_401 Application_20180918

WK
Na
WDICKSONa\
community introstructure consultants
20181286
February 21, 2018
Tasha Alexander
US Army Corps of Engineers $ PA'®
3331 Heritage Trade Drive, Suite 105
Wake Forest, North Carolina 27,587
Dear Ms. Alexander,
WK Dickson & Co., Inc. is pleased to submit a Nationwide Permit 3 Pre -Construction Notification (PCN) for
the Dorothea Drive Drainage Improvements project. The PCN is being submitted as a notification on behalf of
the City of Raleigh Engineering Services Department — Stormwater Management. The City of Raleigh is
addressing flooding and potential failure of an existing undersized culvert beneath Dorothea Drive in
downtown Raleigh. The project is located on an unnamed tributary to Rocky Branch within the Old Fourth
Ward Ffistoric District, a residential neighborhood. This project entails replacing and upgrading an existing 5'
x 6' concrete box culvert. Due to the highly developed nature of the watershed, the regular flooding and road
overtopping has created unstable banks near the culvert. Bank stabilization after construction will follow
accepted stream restoration techniques and consist of sloping steep banks to a stable grade and revegetation
of all disturbed areas with native vegetation. Any rip rap placed in the channel will be imbedded into the
channel as a riffle grade control.
The proposed project extends approximately 125 linear feet along an unnamed tributary to Rocky Branch. The
proposed project will replace the failing 50 linear feet of culvert and a concrete flume with an approximately
three-foot drop to the stream bed. Custom headwalls and endwalls are proposed, including an upstream drop
structure. The drop structure will allow a lower culvert placement for protection of the existing sewer and
water mains that currently intercept the failing culvert. The drop structure will allow the concrete flume to be
removed and a buried riffle grade control is proposed on the downstream end for energy dissipation. The
attached PCN package includes PCN Form, supporting figures, and design plans. Total stream impacts
resulting from the proposed project are 21 LF of permanent impacts and 30 LF of temporary impacts. Buffer
impacts from the proposed project are 43 LF. The project meets all conditions of the NWP 3 and CC 4085.
Thank you for your prompt attention to this important project and please let me know if you have any
questions or require any additional information.
Sincerely,
W.K. Dickson & Co., Inc.
Marc Horstman, PE., Project Manager, WK Dickson
cc: Karen Fliggins, 401/Buffer Coordinator, North Carolina Department of Environmental Quality
Todd Rall, City of Raleigh, Stormwater Management
'�2o (orpo,ate (enter Drive
Raleigh, NC 2l6o7
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Rawl<
WDICK,'SONcommunity infrastructure consultants
February 21'20l8
Karen Higgins
North Carolina Department oFEnvironmental Quality
4Ol&,Buffer Permitting Unit
l65OMail Service Center
Raleigh, NC276h4-lh5O
Dear Ms. Higgins
WK Dickson &(b,(ociopleased hosubmit vrequest for buffer review ofanunnamed tributary mRocky
Branch in the Neuse River Basin for the Dorothea Drive Drainage Improvements project.The PCN being
submitted is notification on behalf of the City of Raleigh Engineering Services Department — Stormwater
Management. The City is addressing ongoing erosion and flooding issues within the Old Fourth Ward
F||yWdcDistrict, aresidential neighborhood. This project entails replacing and upgrading unexisting 5's6'
concrete box culvert. Due tothe highly developed nature of the watershed, the regular flooding and road
overtopping has created unstable banks near the culvert. Bank stabilization after construction will follow
accepted stream restoration techniques and consist of sloping steep banks to a stable grade and revegetation
of all disturbed areas with native vegetation. Any rip rap placed in the channel will be imbedded into the
channel as a riffle grade control. The removal of trees is unavoidable but will be limited to the least possible.
The proposed project extends approximately 125 linear feet along an unnamed tributary to Rocky Branch.The
proposed project will replace the failing 50 linear hpei culvert and m concrete Ouroc with an approximately
three-foot drop to the stream bed. Custom headwalls and endwalls are proposed, including an upstream drop
structure. The drop structure will allow a lower- culvert placement for protection ofthe existing sewer and
water mains that Currently intercept the failing culvert. 'The drop structure will allow the concrete flume (obe
removed and e buried riffle grade control is proposed on the downstream end for energy dissipation. The
,attached PCN package includes PCN Form, supporting 6Auoea' and design plans. [oim| stream impacts
resulting from the proposed project are 21 LF of permanent impacts and 30 LF of temporary impacts. Buffer
impacts from the proposed project are 43LF. The project meets all conditions oithe NYYP3and GC4085.
Thank you for your prompt attention ,o this important pnieo+ and please let mc know if you have any
questions nrrequire any additional information.
Marc Horstnian, PE., Project Manager, WK Dickson
cc: Todd Rall, City of Raleigh, Stormwater Management
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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
1 a. Type(s) of approval sought from the Corps:
❑X Section 404 Permit ❑ Section 10 Permit
1 b. Specify Nationwide Permit (NWP) number: 3 or General Permit (GP) number:
1 c. Has the NWP or GP number been verified by the Corps?
❑ Yes ❑X No
1 d. Type(s) of approval sought from the DWQ (check all that apply):
❑X 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 ❑X No
For the record only for Corps Permit:
❑ Yes ❑X 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
1 g. Is the project located in any of NC's twenty coastal counties. If yes, answer 1 h
below.
E] Yes MX No
1h. Is the project located within a NC DCM Area of Environmental Concern (AEC)?
❑ Yes ❑X No
2. Project Information
2a. Name of project:
Dorothea Drive Drainage Improvements
2b. County:
Wake
2c. Nearest municipality / town:
Raleigh
2d. Subdivision name:
2e. NCDOT only, T.I.P. or state project no:
3. Owner Information
3a. Name(s) on Recorded Deed:
See attached PCN Supplemental narrative
3b. Deed Book and Page No.
3c. Responsible Party (for LLC if
applicable):
3d. Street address:
3e. City, state, zip:
3f. Telephone no.:
3g. Fax no.:
3h. Email address:
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:
Todd Rall
4c. Business name
(if applicable):
City of Raleigh - Stormwater Management
4d. Street address:
127 West Hargett Street
4e. City, state, zip:
Raleigh, NC 27601
4f. Telephone no.:
919-996-4006
4g. Fax no.:
4h. Email address:
[e-mail]
5. Agent/Consultant Information (if applicable)
5a. Name:
Marc Horstman
5b. Business name
(if applicable):
WK Dickson & Co., Inc.
5c. Street address:
720 Corporate Center Drive
5d. City, state, zip:
Raleigh, NC 27607
5e. Telephone no.:
919-782-0495
5f. Fax no.:
919-782-9672
5g. Email address:
[e-mail]
Page 2 of 10

B. Project Information and Prior Project History
1. Property Identification
1a. Property identification no. (tax PIN or parcel ID):
See attached PCN Supplemental narrative
1 b. Site coordinates (in decimal degrees):
Latitude: 35.771217 Longitude: -78.648794
1c. Property size:
0.33 acres
2. Surface Waters
2a. Name of nearest body of water to proposed project:
Rocky Branch
2b. Water Quality Classification of nearest receiving water:
C, NSW
2c. River basin:
Neuse River Basin, USGS
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:
See attached PCN Supplemental narrative
3b. List the total estimated acreage of all existing wetlands on the property:
3c. List the total estimated linear feet of all existing streams (intermittent and perennial) on the property: 300
3d. Explain the purpose of the proposed project:
See attached PCN Supplemental narrative
3e. Describe the overall project in detail, including the type of equipment to be used:
See attached PCN Supplemental narrative
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 priorphases) in thepast?
❑ Yes ❑X No ❑ Unknown
Comments:
4b. If the Corps made the jurisdictional determination, what type
of determination was made?
El Preliminary El Final
4c. If yes, who delineated the jurisdictional areas?
Name (if known):
Agency/Consultant Company:
Other:
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?
El Yes ❑X No El Unknown
5b. If yes, explain in detail according to "help file" instructions.
6. Future Project Plans
6a. Is this a phased project?
❑ Yes ❑X No
6b. If yes, explain.
Page 3 of 10
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 ❑X 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 T
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 P
Stabilization
UT to Rocky Branch
Corps
10
21
S2 T
Culvert
UT to Rocky Branch
Corps
10
30
S3
Choose one
_
54
Choose one
S5
Choose one
-
S6
Choose one
3h. Total stream and tributary impacts
51
3i. Comments:
See attached PCN Supplemental narrative
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 indivii ually 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
Choose one
Choose
O2
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.
Pond ID number
5b.
Proposed use or
purpose of pond
5c. 5d. 5e.
Wetland Impacts (acres) Stream Impacts (feet) Upland
(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 mitigation, 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
number —
Permanent (P) or
Temporary T
6c.
Reason for impact
6d.
Stream name
6e.
Buffer
mitigation
required?
6f.
Zone 1
impact
(square
feet)
6g.
Zone 2
impact
(square
feet
B1 P
Stabilization
Upstream, Left UT to Rocky Branch
No
216
B2 P
Stabilization
Upstream, Right UT to Rocky Branch
No
168
B3 P
Stabilization
Downstream, Left UT to Rocky Branch
No
105
B4 P
Stabilization
Upstream, Right UT to Rocky Branch
No
45
B5 T
Construction Entrance
Downstream, Left UT to Rocky Branch
No
131
589
B6
Yes/No
6h. Total Buffer Impacts: 665 589
61. Comments: 1,254 total buffer impacts. Permanent impacts have been limited to 25 feet upstream and 18 feet downstream. All temporary impacts
will be replanted in native species.
Page 5 of 10

D. Impact Justification and Mitigation
1. Avoidance and Minimization
1a. Specifically describe measures taken to avoid or minimize the proposed impacts in designing project.
See attached PCN Supplemental narrative
1 b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques.
See attached PCN Supplemental narrative
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
❑Payment to in -lieu fee program
❑ 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
Yes X 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
❑X 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.
This is a storm water maintenance project to replace existing structures and stabilize stream banks.
❑ Yes ❑X No
2.
Stormwater Management Plan
2a.
What is the overall percent imperviousness of this project?
2b.
Does this project require a Stormwater Management Plan?
❑ Yes ❑X No
2c.
If this project DOES NOT require a Stormwater Management Plan, explain why:
This is an infrastructure rehabilitation project.
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 localgovernment's jurisdiction is thisproject?
City of Raleigh
❑x Phase II
NSW
3b.
Which of the following locally -implemented stormwater management programs
❑ USMP
apply (check all that apply):
❑ Water Supply Watershed
❑ Other:
3c.
Has the approved Stormwater Management Plan with proof of approval been
❑ Yes ❑X No
attached?
4. DWQ Stormwater Program Review
E]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 Q 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?
❑X 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
Z 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 ❑X 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 ❑ 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.
This is a storm water maintenance project to upgrade failing or under -performing structures and re -stabilize stream banks. Secondary and cumulative
impacts due to development are not expected to increase since the subdivision is already developed. The improvements are designed to provide
storm water structure improvement and prevent flooding events.
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.
NA
Page 9 of 10
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
❑ Yes ® No
habitat?
5b. Have you checked with the USFWS concerning Endangered Species Act
®Yes ❑ No
impacts?
5c. If yes, indicate the USFWS Field Office you have contacted.
Raleigh
5d. What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical
Habitat?
WK Dickson scientists conducted on-site investigations obtained an USFWS species list and reviewed NCNHP data to determine If projected species
may be present. The proposed project is unlikely to affect protected species and will not Impact critical habitat.
6. Essential Fish Habitat (Corps Requirement)
6a. Will this project occur in or near an area designated as essential fish habitat?
❑ Yes ❑X No
6b. What data sources did you use to determine whether your site would impact Essential Fish Habitat?
NOAA Fisheries Essential Fish Habitat Mapper
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?
NC State Historic Preservation Office HPOWEB GIS Service (http:1hww.hpo.ncdcr.gov/)
8. Flood Zone Designation (Corps Requirement)
8a. Will this project occur in a FEMA-deslgnated 100 -year floodplain?
❑ Yes ❑X No
8b. If yes, explain how project meets FEMA requirements:
NC Floodplain Mapping Program
8c. What source(s) did you use to make the floodplain determination?
Applicant/Agent's Printed Name
Date
Appli6ariW66htft Signa u
(Agent's signature Is valid only It an authorization
letter from the applicant isprovided.)
Page 10 of 10

Supplemental Information for Pre -Construction Notification (PCN) Form
Dorothea Drive Drainage Improvements
Pre -Construction Notification Narrative
Dorothea Drive Drainage Improvements
City of Raleigh — Stormwater Management
Nationwide Permit 3
Maintenance (a) Repair, rehabilitation, or replacement
Name and Address of Applicant:
City of Raleigh Engineering Services Department — Stormwater Management
c/o Todd Rall
127 West Hargett Street, 8th Floor
Raleigh, NC 27601
Page 1 of 5

Supplemental Information for Pre -Construction Notification (PCN) Form
Dorothea Drive Drainage Improvements
BACKGROUND AND PURPOSE
The Dorothea Drive Drainage Improvements project is located in downtown Raleigh, North Carolina,
and is located north of Western Boulevard near the intersection of Dorothea Drive and South Saunders
Street as shown in Figure 1. The current land use is urban development. The majority of the contributing
watershed is impervious and generates a substantial amount of runoff that flows through the project
area. The proposed project extends approximately 125 linear feet along the unnamed tributary to Rocky
Branch located under Dorothea Drive. WK Dickson personnel conducted an on-site field assessment of
the Waters of the US on December 27, 2017.
The proposed project purpose is to replace the existing undersized 50 -foot long culvert under Dorothea
Drive to provide adequate flow and to stabilizing the channel. The existing 5'x6' box culvert is failing and
frequently overtops during storm events. The road regularly has standing water after heavy rain events,
causing a public transportation safety hazard. The downstream end of the existing culvert has a 23 -linear
foot concrete pad that acts as a flume with a three foot drop to the channel bed causing scouring and
erosion. This existing box culvert and concrete pad will be replaced with a new 73 linear feet, dual 6'x4'
reinforced concrete box culvert (RCBC). The new box culvert will be placed in the horizontal footprint of
the existing culvert and flume. The proposed design includes two custom cast -in-place headwalls, one of
which is a drop structure and headwall combination to drop the flow to the proposed RCBC. A buried
riffle grade control is proposed on the downstream end of the custom endwall for energy dissipation.
A review of cultural resources determined that the project lies within the Old Fourth Ward Historic
District and adjacent to blockface-multiple properties. All sites are listed by the not reviewed (NR). No
properties within approximately 0.5 miles is classified as historic site. The project area does not include
buildings or historic structures and no impact to historic places is expected. The project is rehabilitation of
an existing drainage structure. Temporary noise may temporarily impact these surrounding areas during
construction.
A review of the Natural Heritage Program records data base does not list protected species or their
habitat located within the project area and none was observed during the site visit.
All activities are confined to an existing culvert structure that will be replaced with upstream and
downstream stabilized channel banks. Bank stabilization will follow accepted stream restoration
techniques and consist of sloping steep banks to a stable grade and all temporarily disturbed areas will be
planted with native vegetation.
This notification requests authorization to replace the failing culvert and stabilize the existing channel in
the immediate vicinity of the replacement through the use of Nationwide Permit number 3 (NWP 3 -
Maintenance). The project would require impacts to a perennial stream channel to meet current accepted
standards by the replacement of existing culverts. The following sections document project compliance
with the US Army Corps of Engineers (USACE) 2017 NWP General Conditions, as well as the USACE-
Wilmington District Regional Conditions for NWPs.
Page 2 of 5

Supplemental Information for Pre -Construction Notification (PCN) Form
Dorothea Drive Drainage Improvements
A. Applicant Information
3a. Owner Information
Name(s) on Recorded Deed
Tax ID (Pin)
Deed Book and Page
Street Address
No.
Dorothea Gardens
1703451679
15259@2031
607 Dorothea Drive
Development, LLC
Raleigh, NC 27603
JTHB Properties, LLC
1703452720
15492@1025
605 Dorothea Drive
Raleigh, NC 27603
JTHB Properties, LLC
1703452781
15492@1017
601 Dorothea Drive
Raleigh, NC 27603
Dorothea Gardens
1703451942
15817@746
608 Dorothea Drive
Development, LLC
Raleigh NC 27603
Dorothea Gardens
1703452910
15817@2768
606 Dorothea Drive
Development, LLC
Raleigh, NC 27603
Dorothea Gardens
1703453824
16169@127
726 S. Saunders St
Development, LLC
I
Raleigh, NC 27603
B. Project Information and Prior Project History
Ia. Property identification no. (tax PIN or parcel ID): See table above -Owner Information
3a. Describe the existing conditions on the site and the general land use in the vicinitu of the nroiect at
the time of this application:
The Dorothea Drive Drainage Improvements project is located in downtown Raleigh, North Carolina.
The Dorothea Drive watershed encompasses 162.5 acres of built -out, urban downtown area. The majority
of the watershed is impervious and generates a substantial amount of runoff that flows through the
project area. The open channel within the watershed is an Unnamed Tributary to Rocky Branch.
3d. Explain the purpose of the proposed project:
The Dorothea Drive project consists of a culvert replacement and upgrades to address reoccurring
stormwater issues. The existing reinforced box culvert is failing, frequently overtops, and leaves standing
water after heavy rain events. Also, sewer and water mains are currently located within the culvert and
pose potential risks. The goals of the project are to replace the failing culvert, provide a 10 -year level of
service, and reduce street overtopping during storm events. The design is for a retrofit project located in
an urban, downtown area and eliminates the need for utility relocation that could have additional impact
on the stream.
3e. Describe the _overall proiect in detail, including the tube of eauivment to be used:
Under Dorothea Drive, the existing culvert consists of a 50 foot, 5'x6' RCBC. The downstream end of the
existing culvert consists of a concrete pad extending 23 feet from the culvert with a 3 -foot drop that is
currently acting as a flume. This culvert will be replaced with new 73 -foot, dual 6'x4' RCBC. This new box
culvert will be placed in the horizontal footprint of the existing culvert and concrete pad/flume, and will
have a new endwall and a drop structure, headwall combination. The existing 2- to 3- foot drop down via
the concrete flume on the downstream end of the existing culvert poses the same environmental impacts as
Page 3 of 5

Supplemental Information for Pre -Construction Notification (PCN) Form
Dorothea Drive Drainage Improvements
the proposed drop structure. A buried riffle grade control is proposed on the downstream end of the
custom endwall for energy dissipation.
C. Proposed Impacts Inventory
*51 linear feet of total impacts, 21 linear feet of permanent impacts, 301inear feet of temporary impacts
Proposed Impacts Inventory
Impact S1 (Plan Sheet 4 of 20)
Stream Impact Sl includes regrading of the stream bed and installing a custom drop headwall and drop
structure on the upstream end of the proposed culvert. The custom drop headwall features a concrete
ogee weir to drop flow into the box culvert. Stream Impact Sl will result in 21 linear feet of permanent
stream impacts within the unnamed tributary to Rocky Branch due to the regrading and custom drop
headwall and is proposed for authorization under NWP 3.
Impact S2 (Plan Sheet 4 of 20)
Stream Impact S2 includes replacing the existing 50 LF 5'x6' RCBC and 23 LF concrete pad with a 73 LF
dual 6'x4' RCBC. The proposed construction includes the culvert replacement, removal of the concrete
pad, construction of an endwall at the downstream end of the culvert, and placement of a proposed
buried riffle grade control for energy dissipation. Stream Impact S2 will result in 30 linear feet of
temporary stream impacts within the unnamed tributary to Rocky Branch and is proposed for
authorization under NWP 3.
D. Impact Justification and Mitigation
1a. & 1b.: Avoidance and Minimization: Snecificallu describe measures taken to avoid or minimize the
proposed impacts in designing project and through construction techniques.
Stream impacts have been reduced by limiting the size of the project area and with construction
techniques that include headwalls and imbedding the culverts. Closed systems on jurisdictional streams
have been lengthened to reduce the chance of future failures. Installations of grade control structures
below OHWMs are limited in placement and size to the minimum necessary to ensure channel stability.
Also, to reduce permanent impacts to jurisdictional waters, existing channel substrates will be restored
following construction. Permanent stream impacts have been limited to 51 linear feet of channel and 43
linear feet of buffer impacts.
Page 4 of 5
Permanent
Average
Impact
Stream
Plan
(P) or
Type of
Stream
Length
Impact
Sheet
Station Location
Temporary
Impact
Width
(linear
Number
Page
(T)
(feet)
feet)
Sl
P
Stabilization
4 of 20
1+32.0 to 1+11.0
10
21
Culvert &
S2
T
4 of 20
0+37.5 to 0+07.5
10
30
Stabilization
Total
51*
*51 linear feet of total impacts, 21 linear feet of permanent impacts, 301inear feet of temporary impacts
Proposed Impacts Inventory
Impact S1 (Plan Sheet 4 of 20)
Stream Impact Sl includes regrading of the stream bed and installing a custom drop headwall and drop
structure on the upstream end of the proposed culvert. The custom drop headwall features a concrete
ogee weir to drop flow into the box culvert. Stream Impact Sl will result in 21 linear feet of permanent
stream impacts within the unnamed tributary to Rocky Branch due to the regrading and custom drop
headwall and is proposed for authorization under NWP 3.
Impact S2 (Plan Sheet 4 of 20)
Stream Impact S2 includes replacing the existing 50 LF 5'x6' RCBC and 23 LF concrete pad with a 73 LF
dual 6'x4' RCBC. The proposed construction includes the culvert replacement, removal of the concrete
pad, construction of an endwall at the downstream end of the culvert, and placement of a proposed
buried riffle grade control for energy dissipation. Stream Impact S2 will result in 30 linear feet of
temporary stream impacts within the unnamed tributary to Rocky Branch and is proposed for
authorization under NWP 3.
D. Impact Justification and Mitigation
1a. & 1b.: Avoidance and Minimization: Snecificallu describe measures taken to avoid or minimize the
proposed impacts in designing project and through construction techniques.
Stream impacts have been reduced by limiting the size of the project area and with construction
techniques that include headwalls and imbedding the culverts. Closed systems on jurisdictional streams
have been lengthened to reduce the chance of future failures. Installations of grade control structures
below OHWMs are limited in placement and size to the minimum necessary to ensure channel stability.
Also, to reduce permanent impacts to jurisdictional waters, existing channel substrates will be restored
following construction. Permanent stream impacts have been limited to 51 linear feet of channel and 43
linear feet of buffer impacts.
Page 4 of 5

Supplemental Information for Pre -Construction Notification (PCN) Form
Dorothea Drive Drainage Improvements
During the planning and design phase of the project, efforts were made to avoid impacts to the greatest
extent possible. Certain unavoidable impacts are necessary to fulfill the purpose and need. To minimize
impacts to surface water resources during the project construction and maintenance, an erosion and
sedimentation control plan will be included in the project's design plans.
Soft stabilization practices including installation of grade control structures, coir matting installation, and
seeding will be used throughout the project. All erosion control measures will be placed in accordance
with the Erosion Control Regulations. Local storm water and erosion control regulations will be followed
on the project site. The stabilized stream banks will be planted with native vegetation.
Ongoing on-site construction inspections will ensure that construction contractors are following all DEQ -
approved plans.
Page 5 of 5

59��<.ii �%%� f'bul hta¢tt A9i A4 p•
United States Department of the Interior
FISH AND WILDLIFE SERVICE
f Yp ,p Raleigh Ecological Services Field Office
Post Office Box 33726
Raleigh, NC 27636-3726
Phone: [phone] Fax: [phone]
In Reply Refer To: January 24, 2018
Consultation Code: 04EN2000-2018-SLI-0291
Event Code: 04EN2000-2018-E-00610
Project Name: Dorothea Drive Drainage Improvements
Subject: List of threatened and endangered species that may occur in your proposed project
location, and/or may be affected by your proposed project
To Whom It May Concern:
The species list generated pursuant to the information you provided identifies threatened,
endangered, proposed and candidate species, as well as proposed and final designated critical
habitat, that may occur within the boundary of your proposed project and/or may be affected by
your proposed project. The species list fulfills the requirements of the U.S. Fish and Wildlife
Service (Service) under section 7(c) of the Endangered Species Act (Act) of 1973, as amended
(16 U.S.C. 1531 etseq.).
New information based on updated surveys, changes in the abundance and distribution of
species, changed habitat conditions, or other factors could change this list. Please feel free to
contact us if you need more current information or assistance regarding the potential impacts to
federally proposed, listed, and candidate species and federally designated and proposed critical
habitat. Please note that under 50 CFR 402.12(e) of the regulations implementing section 7 of the
Act, the accuracy of this species list should be verified after 90 days. This verification can be
completed formally or informally as desired. The Service recommends that verification be
completed by visiting the ECOS-IPaC website at regular intervals during project planning and
implementation for updates to species lists and information. An updated list may be requested
through the ECOS-IPaC system by completing the same process used to receive the enclosed list.
Section 7 of the Act requires that all federal agencies (or their designated non-federal
representative), in consultation with the Service, insure that any action federally authorized,
funded, or carried out by such agencies is not likely to jeopardize the continued existence of any
federally -listed endangered or threatened species. A biological assessment or evaluation may be
prepared to fulfill that requirement and in determining whether additional consultation with the
Service is necessary. In addition to the federally -protected species list, information on the
species' life histories and habitats and information on completing a biological assessment or

01/24/2018 Event Code: 04EN2000-2018-E-00610
evaluation and can be found on our web page at http://www.fws.gov/raleigh. Please check the
web site often for updated information or changes
If your project contains suitable habitat for any of the federally -listed species known to be
present within the county where your project occurs, the proposed action has the potential to
adversely affect those species. As such, we recommend that surveys be conducted to determine
the species' presence or absence within the project area. The use of North Carolina Natural
Heritage program data should not be substituted for actual field surveys.
If you determine that the proposed action may affect (i.e., likely to adversely affect or not likely
to adversely affect) a federally -protected species, you should notify this office with your
determination, the results of your surveys, survey methodologies, and an analysis of the effects
of the action on listed species, including consideration of direct, indirect, and cumulative effects,
before conducting any activities that might affect the species. If you determine that the proposed
action will have no effect (i.e., no beneficial or adverse, direct or indirect effect) on federally
listed species, then you are not required to contact our office for concurrence (unless an
Environmental Impact Statement is prepared). However, you should maintain a complete record
of the assessment, including steps leading to your determination of effect, the qualified personnel
conducting the assessment, habitat conditions, site photographs, and any other related articles.
Please be aware that bald and golden eagles are protected under the Bald and Golden Eagle
Protection Act (16 U.S.C. 668 et seq.), and projects affecting these species may require
development of an eagle conservation plan (http://www.fws.gov/windenergy/
eagle_guidance.html). Additionally, wind energy projects should follow the wind energy
guidelines (http://www.fws.gov/windenergy/) for minimizing impacts to migratory birds and
bats.
Guidance for minimizing impacts to migratory birds for projects including communications
towers (e.g., cellular, digital television, radio, and emergency broadcast) can be found at: http://
www.fws.gov/migratorybirds/CurrentBirdIssues/Hazards/towers/towers.htm; http://
www.towerkill.com; and http://www.fws. og v/mi rg atoiybirds/CurrentBirdlssues/Hazards/towers/
comtow.html.
Not all Threatened and Endangered Species that occur in North Carolina are subject to section 7
consultation with the U.S Fish and Wildlife Service. Atlantic and shortnose sturgeon, sea
turtles,when in the water, and certain marine mammals are under purview of the National Marine
Fisheries Service. If your project occurs in marine, estuarine, or coastal river systems you should
also contact the National Marine Fisheries Service, http://www.nmfs.noaa.gov/
We appreciate your concern for threatened and endangered species. The Service encourages
Federal agencies to include conservation of threatened and endangered species into their project
planning to further the purposes of the Act. Please include the Consultation Tracking Number in
the header of this letter with any request for consultation or correspondence about your project
that you submit to our office. If you have any questions or comments, please contact John Ellis
of this office at [e-mail].

01/24/2018 Event Code: 04EN2000-2018-E-00610
Attachment(s):
• Official Species List

01/24/2018 Event Code: 04EN2000-2018-E-00610
Official Species List
This list is provided pursuant to Section 7 of the Endangered Species Act, and fulfills the
requirement for Federal agencies to "request of the Secretary of the Interior information whether
any species which is listed or proposed to be listed may be present in the area of a proposed
action".
This species list is provided by:
Raleigh Ecological Services Field Office
Post Office Box 33726
Raleigh, NC 27636-3726
[phone]

01/24/2018 Event Code: 04EN2000-2018-E-00610 2
Project Summary
Consultation Code: 04EN2000-2018-SLI-0291
Event Code: 04EN2000-2018-E-00610
Project Name: Dorothea Drive Drainage Improvements
Project Type: STREAM / WATERBODY / CANALS / LEVEES / DIKES
Project Description: The Dorothea Drive Drainage Improvements project is in downtown
Raleigh, North Carolina, and is located north of Western Boulevard near
the intersection of Dorothea Drive and South Saunders Street. The
proposed project purpose is to replace the existing undersized 50 -foot
culvert under Dorothea Drive to provide adequate flow and to stabilizing
the channel. The existing 5'x6' box culvert is failing, frequently over tops
during storm events.
Project Location:
Approximate location of the project can be viewed in Google Maps: https:
www.voogle.com/maps/place/35.77120534944022N78.6487497904055W
Counties: Wake, NC

01/24/2018 Event Code: 04EN2000-2018-E-00610 3
Endangered Species Act Species
There is a total of 4 threatened, endangered, or candidate species on this species list. Species on
this list should be considered in an effects analysis for your project and could include species that
exist in another geographic area. For example, certain fish may appear on the species list because
a project could affect downstream species. See the "Critical habitats" section below for those
critical habitats that lie wholly or partially within your project area under this office's
jurisdiction. Please contact the designated FWS office if you have questions.
Birds
NAME
Red -cockaded Woodpecker Picoides borealis
No critical habitat has been designated for this species.
Species profile: htWs://ecos.fws. og v/ecp/species/7614
Clams
NAME
Dwarf Wedgemussel Alasmidonta heterodon
No critical habitat has been designated for this species.
Species profile: htlps://ecos.fws.gov/ecp/species/784
Yellow Lance Elliptio lanceolata
No critical habitat has been designated for this species.
Species profile: ht!ps://ecos.fws.gov/ecp/species/4511
Flowering Plants
STATUS
Endangered
STATUS
Endangered
Proposed Threatened
NAME STATUS
Michaux's Sumac Rhus michauxii Endangered
No critical habitat has been designated for this species.
Species profile: htWs://ecos.fws.gov/ecp/species/5217
Critical habitats
THERE ARE NO CRITICAL HABITATS WITHIN YOUR PROJECT AREA UNDER THIS OFFICE'S
JURISDICTION.

Dorothea Drive
January 24, 2018
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THE CITY OF RALEIGH
ATTENTION CONTRACTORS
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CITY MANAGER
ALL CONWRIK.` M TO HE N
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Stormwater Management Division
127 West Hargett Street, 8th Floor
Raleigh, NC 27602
[phone]
DOROTHEA DRIVE
DRAINAGE IMPROVEMENTS
Project No. 20170190.00.RA
Project ID: 2017-007
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GENERALNOTES
GENERALNOTES -
PROPOSED CURB ELEVATION:
STOCKPILING NOTE:
THE C -YR— ENSIRE MOPM LO�IONON—.NL MAGE FSM .—AA. RHE CMTRACTDR SNNI ETMI EroNSTING
"O -STE STOOOAUNG R TO BE N10NFD FOR THIS MOECi.
PAVEMENT. UNLESS OMERWTSE NDTED.
DATUM:
DRAINAGE STRUCTURES:
.OAC—TAI GAMY - "AD BJ
NFTICAL OAN4
THEYY BMMAY BE IDX OSINTS M TO INOCENANCOCATIONS OATi F'FOORESlU° CCOONDIiTION �YECBY EP HELES ME TO BE
COASTRUC— IN AL MAMA. STRUcTMES. —1 HOLES SHOULD BE M B FWT CENTER WMA
STRUCNIF BYMW 91m iRIE AND i1LlEENPFI9 L ""E M BE CONNED ON THE glrypE 6 TIE
- xA. BB
CONTROL BENCH MARKS-DOROTHEA DRIVE
PgNT/ EABnxO ELEV.
SAT.. OF — ANO ELEVATIONS REFER o ER THE CENTO MOP METS. APMHCaS
B4AxAro
CnCH 0S e CATCH B— OP APMOVA BY THE ENOTIEER. COTRACTER YAv
TOTE — SmUCRRiE .. --T STNUCRMEI.
SUBSURFACE PLANS:
suesmrACE I-1CATNNS O A LIMITED SOME ARE AVNIA&E FOR THIS PNO,ECT, A COPY
ME CEOTEMIACN EPMT IS .GELDED INTHE PROECT MANUAL- ADOTIONALY.
GENERAL UTILITIES NOTES:
THE
WNNACTON SHALL MME HIS/%R OM NLESTGATM AS TO THE SU ISMFACE CO.T— TIE
LOCAT.. COT �OIOIR"SI—ACCTM iO =—.---T l s --Y X—D—BErWFE11 BOVIxc
uCTNOpS AIp YATEPoAu 91ALL BE AN ACCOMANO wTH TE
—T r OF RAECH UTILITIES SrN10M05 Me SE-1ATION, ORAL s
EHNSE NOTED.
PLEASE REIEA TO THE UNUTY EXCAVATOR EPOS PREPARED BY STEWNRT ENDNEERNG, NCDAM '
THE CiTr F ARAM gSOEPA1pE5 FRWRUTUTISEIS SHONANM ON PLANSAIE. CONTRACTOR N NOnFr
Hwy wORIONG d CITY O RALEIGH M6ECTS Am REWIRED i A
COPY M ME OESCH MANUAL. AND SIAL KEEP A COPY ON E JOB 97 AT ALL
MES
ES.
TREES. SHRUBS. AND HEDGES:
aON FELLYNESP°"S a PM COITACIAC AL APMOPAATE PANTIES AID
E"SUPoNC UOOTIES ARE LOCATED — TI THE COIMENCENE"T O CONSTRUCROI.
COx1RAC1M SINAL MOT pSNRB .1 MEAS ODTSO O THE IMUS OF dSTNBANO.
C"LLTx SEpNC"ELLS Se "%11 NULCIP—, ITT,I.11, N I- AC BJy a9�A9 FOR OTCCAT.TTy
91ALL RACTM
—Y LOCATION. DEPTH. ANE SIE OF AL EIOSnNG UTILTIC5 PRIM TO
THE CONTRACTOR SHALL NOT ENOLE my TEES PANNED ANTI MARLED FOR EA
UNLESS —I— BY THE MOECT INSPECTOR.
CONS
UnUTY IUM_ml I—SInM O CONSMUCnM MATERIALS ELATED T) PUSIC
THE CMTRACTM SHAL INSTAL TREE PROTECTION ENONC ANOuNO Au
HEDNFS AS 9gNWI M M All Ax0/OR AS MEC TEE BY m �R, mE
ANE ME C9"TERACiM IS
IF
ES M �OSEpONwA D�� TOPMYHw � �I IS INSTALID wrHWI 12
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CALL 091E C ])-1)B-3A3) Aq WFC MFM.
EOnaED i0 EMONE At TNEmBPlµsµ
COPTFACTOP SHALL SAK ALL OTHER ZEES SMRMS ANO "EDGES WTSO THE CONSMUCnMB
OMITS.
AHY SENER LATERA k NATER SERNO LOUTIONS E SNOWY, A"�LL
ANO AE TO BE FIELD NeTOLe MNw TO CONSTRUCi1OI.
THE COITRKTOI SHALL SATSFACTMILY OSPOSE O ME SHRUBS AAD/M TIRES. WHEEYEA
E"N"mR' ROOT N"'DaIB
SNTNALACLBBE OSED To ANNE—11 Tp AGE To TTi. °I+6ors °FRau
WATER AND SEVER UTERAS AAE SHOW. CONTRACTOR TO —A. WRIER ANO
SEwT LITERAL --I AB NEEDED.
--D,T.
OCTON —1
IN 11E AEC MD SH-LZOT BE EI— li- IC 5S CONFLE ED ON MD S ORECTFD
UTILITY COORDINATION:
=pNSTRUCAT
BY ME OTY. PAINT ME-- FENCE 11wOUGHWT CONSTRUCTION
IIEE MOTECTON FENDS SNALL E AH—CTED AND ANNROLEO BY THE On.
CONTACT
PNOR To COPSTNUCnOIN.E-- Ai1M "AL A. NOTE — 11-11100- 32- SHAI FOR 1
RWM CIH LINTY COON]INATOt NCHAEL AMwSON (91109 -9% -AO) IMKI, G
MR1CAnONS SOLE E SUHNTTED TIE UIFIUTCS
MAIL BOXES:
MPA""'ENT (PEN) WREN THE PLINs ARE SuEm— To THE END.
THE CONTRACTOR SHALL RELOATE ALL YNL Bo1E5 AS EOINBE .1 SECTION t0) -U O M
NODOT STAIpNB SEOOUMNS FOR ROIOS AAD STRUCTURES, TE MS WOw
THE V.S POSTAL SEANCE
THE LCODPI"MACT -Ow KewG UTEITES SHORN FO MINE PIANS ARE FM C U
PRM MOTECTq T- FOR C "TES DMIMc CMSTNUCTIM
OPEUTOP. THE OT', OSM CMSLETANi, ANO/0q AGENL SHALL NOT BE IND
ESPOISIBLE FOR ME ACCURACY ON LOUTOI, 42E. DEPTH M COWLCTEE. O
SAW CUTS:
ME RIFONUATOI. BEFORE BEOHING CWSTiN1CTd. THE —TNACTM SIAL
THEIR UnT"nLa°FCATIONS:"THE =C%;%-A=MT5ia1'�"'U-uMTE F &" To
AO CAOSLI BY CONSTRUCTION O ERARCH ANOX1 EUTFD E
THE KTER SNAIL SAN OUT EDSTNG AS— AN /M COIOETE SUEAZS MIM i0
ROgvA �M OTEIwSE ORECTD BY THE MOJEC wOPECTOR. SAW WT wOM SHALE 1
iNW TEN EDIL IR PALO l BE EEACEO
COITRACTOP M HIS AGENTS. THE COPTRACTNw SHALL HIXD E O"TYKHAOAMLE55 FOR
ANY wCWVENI THE AECOE N�ON ECE DELAY
YCAUSE BY THE PERAN'"S O Ep E"ISi �FtlkNNC
AT.
A TIE-
ou"C". AS ADOTIMAL PATENEMENT EONRED l0 TIE -NI ttl EAt£Ta�PFI0PO5FD CURB Ano
EXCEPT FOR CONTRACT ITEMS, INLL BE PETEORYEO BY THE UTILITY S RACE MOTHER.
THE COPMACTM SHALL COM -ATE IS INN K WTH OTHERS IN ORDER To PK,ACE
SATISFACTORY PASS O TIIE PROJECT.
EXISTING SANITARY SEWER AND WATER LINE:"ATAL
G
wAS EPE 1ATTE MUST E CONTACTED PINCR TD AxD OLURNG ANY
COTTNCT- YATHN THE AEA O EDSINC GAS MANS AT B)] -7776-3K2].
THE =ACTw — COMMA rE THE At.NSTEHT M RELOCATION O CAS MANS
PSE. P UST E He-. TWO —I N AC—CE O COISTTIVCTOI.
Al AC.—TS AND RCLOAnMS .1 E PEEOxED BY PSRC.
AN eT AEMESENTAnW MUST BE CONTACTED MIM TO Me WRING ANY
CONSTRUCTION wTR" THE AEA O EDSTING ATeT CABLES.
TOOK INA DE➢""BART SEVENCA, THE OONTRACTON SIAL CONTACT THE CITY O RADA w91C
TIESBS)-13TH M 919-350-2]J).
THE CMMACTOP SNAL NOT OPERATE MY WATER 1—TE SHA
AL IC— SHL
CCIONENNAIE INTM THE --IT .—PM TE OKRA— O ANY -- —,
THE — T NSECTM FROI THE CITY O NAIDON PUBLIC WMNS DEPMTEIENT SHALL E
g� SOB Kr THE CONTRACTOR M HOM5 MIM TO THE BEON"1NG OF WATER III SANTMr
NAIfA AL2 ENCONTEREO, ME CONTRACTOR
TIE WNMKTM SHALL SUPPMr ANE PRO Y EIOSTNc UNOENMOUAO UTILITIES
ENCONIERFD DMING MENCN EXU PoAMXI 0/p1 PORE INSTALLATION. CONTRACTOR
TO USE
EXTTEIE CAUTION N AREAS EM PIOHER LINES THE
1lM[S S1A1 USE
CAAAE .SANT NG AVWNE OR NE.B Eu. ENSTNG SEWER M-= IS DAUAOD.
E CMTR�TTM SHALL w4EOATELY REFACE THE SEWER M TER UNE C JSO DUCTILE
NM PIE A 5 SE IN ACCMDAMO WTH THE OTY O —CH UTILITY STAIDME$ ANO
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=M-MT.AEA O E MEI LINES NITH
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UNDERGROUND UTILITIES
ANO/M TEIt UNE wM PC J]O WCn7E NM PIPE WNEN MAMA¢ NE COTES WTHRN TB
NOES SVMNFnCALLY M t0 EET HMi2M T-1.
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NC N.O EE"OSAM ROICN MMO SE AEENTTC 01- RIEiI AC CONSTRUCTED 1- 4IN KINCtliO.WCE wM
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CUSTOM HEADWALL STRUCTURE 2 DETAILSHEADWALL STRUCTURE 2 DETAILS �U
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DOROTHEA DR.
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LEGEND
A
TREELEGEND
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STEWART
EXISTING CONDITIONS
SURVEY FOR:
DOROTHEA
DRIVE
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Feet
Figure 1 - Project Aerial Map 2,000 1,000 0 2,000
Dorothea Drive Drainage
Improvements Project 1 inch = 2,000 feet

s ,
9iltmore
Part tland Hills
Hertford
Village
dolma
Pines Twin Sources; Esri, HERE,' DeLorme Intermap, increment P Corp., GEBCO USGS,
tamkatte �'�� `` Lakes Eslaty, FAOs,NPS, NRCAN, GeoBase, IGN, Kadaster NL, Ordnance Suniey°,Esri
�apan, METI, Esri China(Hong Kong), swisstopo, Mapmylndia,penStreetMap.contributors, and the GIS User Community
Vhwl< N Figure 2 - USGS Map
1001%k I WDICKSk-ANWE Dorothea Drive Drainage
community infrastructure consultants S Improvements Project
Feet
2,000 1,000 0 2
1 inch = 2,000 feet

m„
Legend
- Dorothea Drive Culvert
Ph[) i Stream Centerline
MUSYM
Altavista fine sandy loam, 0 to 4% slopes
Cecil -Urban land complex, 2 to 10% slopes
JChewacla and Wehadkee soils, 0 to 2% slopes
Pacolet-Urban land complex, 10 to 15% slopes
Urban land
Wake-Rolesville complex, 15 to 25% slopes
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Feet
Figure 3 - Soils Map 200 100 0 200
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K:a � n,•.•. W ei'"
�d Dorothea Drive Drainage
community intra5ttuctufe consultonts S Improvements Project 1 inch = 200 feet

Wk � N 200 100 0 200 Feet
Figure 4 -Vicinity Map
Dorothea Drive Drainage
community inirostructure consultants s. Improvements Project 1 inch = 200 feet

Feet
N Figure 5 - Buffer Impact 80 40 0 80
WDICKS{ W -w7 Dorothea Drive Drainage
community infrastructure consultants S Improvements Project 1 inch = 80 feet