20071219 Ver 2_401 Application_20200515

DWR
mrlslon of Water Resources
Pre -Construction Notification (PCN) Form
April 11, 2020 Ver 3.1
Initial Review
Has this project met the requirements for acceptance in to the review process?*
r Yes
r No
Is this project a public transportation project?*
C Yes r No
Change only if needed.
BIMS # Assigned * Version#*
20071219 2
Is a payment required for this project?*
r No payment required
What amout is owed?*
r Fee received
r $240.00
r Fee needed - send electronic notification
r $570.00
Reviewing Office *
Select Project Reviewer*
Raleigh Regional Office - [phone]
Stephanie Goss:eads\szgoss
Information for Initial Review
1a. Name of project:
Meadows at Twin Lakes
1a. Who is the Primary Contact?*
Deborah Shirley
1b. Primary Contact Email:*
[e-mail]
Date Submitted
5/15/2020
Nearest Body of Water
Little Lick Creek
Basin
Neuse
Water Classification
WS-N; NSW
Site Coordinates
Latitude:
36.001563
A. Processing Information
County (or Counties) where the project is located:
Durham
Is this a NCDMS Project
r Yes r No
Longitude:
-78.839285
Is this project a public transportation project?*
r Yes r No
1a. Type(s) of approval sought from the Corps:
W Section 404 Permit (wetlands, streams and waters, Clean Water Act)
r Section 10 Permit (navigable waters, tidal waters, Rivers and Harbors Act)
1c. Primary Contact Phone:*
[phone]
V
1b. What type(s) of permit(s) do you wish to seek authorization?

W Nationwide Permit (NWP)
r Regional General Permit (RGP)
r Standard (IP)
1c. Has the NWP or GP number been verified by the Corps?
r Yes r No
Nationwide Permit (NWP) Number:
NWP Numbers (for multiple NWPS):
1d. Type(s) of approval sought from the DWR:
W 401 Water Quality Certification - Regular
r Non-404 Jurisdictional General Permit
r Individual Permit
29 - Residential Developments
le. Is this notification solely for the record because written approval is not required?
For the record only for DWR 401 Certification:
For the record only for Corps Permit:
F- 401 Water Quality Certification - E)press
P Riparian Buffer Authorization
1f. Is this an after -the -fact permit application?*
r Yes r No
1g. Is payment into a mitigation bank or in -lieu fee program proposed for mitigation of impacts?
r Yes r No
1g. Is payment into a mitigation bank or in -lieu fee program proposed for mitigation of impacts?
r Yes r No
Acceptance Letter Attachment
1h. Is the project located in any of NC's twenty coastal counties?
r Yes r No
1j. Is the project located in a designated trout watershed?
r Yes r No
B. Applicant Information
1d. Who is applying for the permit?
r Owner W Applicant (other than owner)
le. Is there an Agent/Consultant for this project?*
r Yes r No
2. Owner Information
2a. Name(s) on recorded deed:
Crosland Meadows LLC
2b. Deed book and page no.:
Deed Book:005773 Page:000036
2c. Responsible party:
Adam Ford
2d.Address
Street Address
5960 Fairview Road., Ste. 200
Address tine 2
city
Charlotte
Postal / Zip Code
28210
2e. Telephone Number:
[phone]
2g. Email Address:*
[e-mail]
State / Rwince / Ifgion
NC
Country
United States
2f. Fax Number:
r Yes r No
r Yes r No
3. Applicant Information (if different from owner)

3a. Name
Jay Colvin
3b. Business Name:
Dan Ryan Builders
3c.Address
Street Address
3000 RDU Center Drive, Suite 202
Address Line 2
City
Morrisville
Postal / Zip Code
27560
3d. Telephone Number:
[phone]
3f. Email Address:*
[e-mail]
4. Agent/Consultant (if applicable)
4a. Name:
Deborah Shirley
4b. Business Name:
Soil & Environmental Consultants, PA
4c.Address
Street Address
8412 Falls of Neuse., Ste. 104
Address Una, 2
city
Raleigh
Postal / Zip Code
27615
4d. Telephone Number:
[phone]
4f. Email Address:*
[e-mail]
State / Province / Fegion
NC
Country
United States
3e. Fax Number:
State / Province / Region
NC
Country
United States
4e. Fax Number:
[phone]
Agent Authorization Letter*
13849 AAF.pdf 143.88KB
Fc--Project Information and Prior Project History u
1. Project Information
1b. Subdivision name:
(d appropriate)
1c. Nearest municipality / town:
Durham
2. Project Identification
2a. Property Identification Number:
168330
2c. Project Address
Street Address
750 Junction Road
Address Line 2
City
Durham
Postal / Zip Code
27703
3. Surface Waters
2b. Property size:
=/- 40.24
State / Province / Region
NC
Country
United States
3a. Name of the nearest body of water to proposed project:*
Little Lick Creek

3b. Water Resources Classification of nearest receiving water:*
WS-IV; NSW
3c. What river basin(s) is your project located in?*
Neuse
3d. Please provide the 12-digit HUC in which the project is located.
030202010504
4. Project Description and History
4a. Describe the existing conditions on the site and the general land use in the vicinityof the project at the time of this application:*
Epsting conditions on the property consists forested land. There are two (2) perennial stream features (i.e. streams A & E), five (5) intermittent stream features (i.e. streams upper A, B,
C, D and F) and one drained pond. Stream'A' starts as an intermittent stream and transitions into a perennial stream, stream'A' runs along the western property boundary. Intermittent
streams'B' and 'C'flowinto feature'A'. Perennial Stream'E' flows out of offsite pond 3, intermittent features &'F' flow into stream'E'. There are five (5) wetland features (W1, W2,
W3, W4 and W5) and six (6) linear wetland features (LW1, LW2, LW3, LW4, LW5 and LW6) throughout the property. General land use within the vicinity of the property consist of
residential and forested land.
4b. Have Corps permits or DWR certifications been obtained for this project (including all prior phases) in the past?*
r Yes r No r Unknown
4d. Attach an 8 1/2 X 11 excerpt from the most recent version of the USGS topographic map indicating the location of the project site. (for DWR)
USGS Map.pdf
1.64 MB
4e. Attach an 8 1/2 X 11 excerpt from the most recent version of the published County NRCS Soil Survey map depicting the project site. (for DWR)
SS Map.pdf 1.17MB
4f. List the total estimated acreage of all existing wetlands on the property:
1.64
4g. List the total estimated linear feet of all existing streams on the property:
3,530
4h. Explain the purpose of the proposed project:*
The purpose of this project is to construct a residential development and necessary infrastructure.
4i. Describe the overall project in detail, including indirect impacts and the type of equipment to be used:*
The overall project consists of the construction of a Residential Development, including but not limited to roads, utilities, stormwater devices and residential structures. Specifically, there
are two (2) Storn eter Ouffalls that impact riparian buffers, one (1) road crossing that impacts riparian buffers, wetlands, streams and one (1) utility crossing that impacts riparian
buffers and wetlands. Equipment typically used for construction and earthwork such as backhoes, bulldozers, excavators, graders, pavers etc. will be utilized for this project.
4j. Please upload project drawings for the proposed project.
5. Jurisdictional Determinations
5a. Have the wetlands or streams been delineated on the property or proposed impact areas?*
r Yes r No G Unknown
Comments:
5b. If the Corps made a jurisdictional determination, what type of determination was made?*
r Preliminary r Approved r Not Verified r Unknown r N/A
Corps AID Number:
PJD not issued to date but packet sent May 8, 2019 with updated sketch map sent on 9/20/19
(SAW-1900-20070). *Note that I checked "preliminary" so that section 5d could be viewed*
5c. If 5a is yes, who delineated the jurisdictional areas?
Name (if known): Steven Ball
Agency/Consultant Company: Soil & Environmental Consultants, PA
Other:
5d. List the dates of the Corp jurisdiction determination or State determination if a determination was made bythe Corps or DWR
USACE: site visit and field verification was completed by Josh Deal on July 17, 2019 (SAW-1900-20070); NCDWR: Buffer Determination confirmed by Stephanie Goss on August 8, 2019
(NBRRO #19-252).
5d1. Jurisdictional determination upload
13849 Twin Lakes_750 Junction Road DWR letter.pdf 2.53MB
SAW-1900-20070 750 Junction Rd Preliminary JD Concurrence.pdf 94.97KB
6. Future Project Plans
6a. Is this a phased project?*

f Yes F No
Are anyother NWP(s), regional general permit(s), or individual permits(s) used, or intended to be used, to authorize any part of the proposed projector related activity?
It is my understanding that there are no intended future phases beyond the property boundaries shown. Therefore, no additional MNP, Regional General Permits, or IP are anticipated.
D. Proposed Impacts Inventory
1. Impacts Summary
la. Where are the impacts associated with your project? (check all that apply):
W Wetlands W Streams -tributaries W Buffers
r Open Waters r Pond Construction
2. Wetland Impacts
2a1 Reason (?)
2b. Impact type * M
2c. Type of W.*
2d. W. name *
2e. Forested *
2f. Type of
2g. Impact
Jurisdicition*(?)
area
Impact 3
Road Crossing: Fill
P
Headwater Forest
W5 & LW4
Yes
Both
0.036
(acres)
Impact 3
Road Crossing:
T
Headwater Forest
LW3 & LW5
Yes
Both
0.002
Temporary Construction
(acres)
Measures
Impact 4
Utility Crossing:
P
Headwater Forest
W1
Yes
Both
0.049
Permanent Maintenance
(acres)
Corridor (Permanent -no
permanent loss)
2g. Total Temporary Wetland Impact
0.002
2g. Total Wetland Impact
0.087
2h. Comments:
3. Stream Impacts
2g. Total Permanent Wetland Impact
0.085
3a. Reason for impact (?)
3b.lmpact type *
3c. Type of impact*
3d. S. name *
3e. Stream Type *
3f. Type of
3g. S. width *
3h. Impact
❑
(?)
Jurisdiction*
length -
S1
Impact 3-Road Crossing
9
Permanent
Culvert
B
Intermittent
Both
5
140
(Culvert andDissipator)
Average (fee)
(li�rfeet)
S2
Impact 3-Road Crossing
Temporary
Other
B
Intermittent
Both
(Temporary Construction
F�El_
Measures)
3i. Total jurisdictional ditch impact in square feet:
0
3i. Total permanent stream impacts:
140
3i. Total stream and ditch impacts:
147
3j. Comments:
6. Buffer Impacts (for DWR)
6a. Project is in which protect basin(s)?
Check all that apply.
F7 Neuse
r Catawba
r Goose Creek
r Other
3i. Total temporary stream impacts:
7
r Tar -Pamlico
r Randleman
r Jordan Lake
6b. Impact Type 116c. Per or Temp 6d. Stream name 116e. Buffer mitigation required? 116f. Zone 1 impact I6g. Zone 2 impact
1-Stormwater Ouffall

Impact 2-Stormwater Outfall
P
C
No
627
430
Impact 3-Road Crossing I
P
B
No
8,434
4,671
Impact 4-Utility Crossing
P
D
No
1,835
1,229
6h. Total buffer impacts:
Zone 1 Zone 2
Total Temporary impacts: 0.00 0.00
Zone 1 Zone 2
Total Permanent impacts: 11,722.00 7,091.00
Zone 1 Zone 2
Total combined buffer impacts: 11,722.00 7,091.00
6i. Comments:
Supporting Documentation
Impact Maps. pdf
E. Impact Justification and Mitigation
1. Avoidance and Minimization
2.86MB
la. Specifically describe measures taken to avoid or minimize the proposed impacts in designing the project:
S&EC completed a wetland delineation and %use River Buffer evaluation for the entire property in order to identify natural resources so that impacts
could be avoided & minimized to the mapmum extent practicable. Proposed impacts include two (2) stormwater outfalls, one (1) road crossing and one
(1) utility crossing. Impact areas 1 & 2 are proposed stormwater outfalls for stormwater control measures. These are permanent riparian buffer impacts
necessary to discharge treated stormwater. These discharges have been designed to enter the stream at an angle, and to avoid stream impacts. The
end of both outfalls Will also have rip rap dissipators to limit erosion to the stream beds. Impact area 3 is proposed permanent wetland, stream and
associated riparian buffer impacts for a road crossing. This crossing is necessary to access the western side of the property. The location of this
crossing was designed to minimize impacts to wetlands W5, LW3 & LW5 and cross the stream and riparian buffer at a near perpendicular angle,
further minimizing total impacts. Retaining walls have also been utilized to minimize wetland, stream and riparian buffer impact. Impact area 4 is
proposed impacts to wetlands and riparian buffer for a sanitary sewer crossing. Wetland impacts are for construction and a permanent maintenance
corridor (i.e. permanent -no permanent loss for the change of wetland function). Bore and jack construction method with a pipe encasement will be
utilized to avoid impacts to the stream in this location. Temporary stream impacts will be brought back to pre -construction stream bed elevations and
the stream banks will be stabilized. Temporary wetland impacts will be brought back to pre -construction contours and will be allowed to re -vegetate
with adjacent wetland seed source.
1b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques:
Sanitary sewer crossing will be a bore and jack underneath the stream channel With an encasement pipe. The erosion control plan has been staged to
first install the stream crossing of Feature B prior to the addition of fill or other utilities. If stream has base flow at the time of installation on Impact area
3 a temporary impervious dike and pump/temporary hose will be used for stream diversion.
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?
r Yes r No
2b. If this project DOES NOT require Compensatory Mitigation, explain why:
Permanent loss stream impacts are less than 150 Linear Feet, permanent loss wetland impacts are less than 0.10 acre. Impacts have been avoided to the mapmum extent practicable.
Therefore compensatory mitigation in the form of mitigation payment has not been proposed.
F. Stormwater Management and Diffuse Flow Plan (required by DWR)
1. Diffuse Flow Plan
la. Does the project include or is it adjacent to protected riparian buffers identified within one of the NC Riparian Buffer Protection Rules?
r Yes r No
What type of SCM are you providing?
r Level Spreader
r Vegetated Conveyance (lower SHWT)
r Wetland Swale (higher SHWT)
W Other SCM that removes minimum 30% nitrogen
r Proposed project will not create concentrated stormvrater flow through the buffer
Diffuse Flow Documentation

1924 SIA_POST-SW2.pdf 1.12MB
2. Stormwater Management Plan
2a. Is this a NCDOT project subject to compliance with NCDOT's Individual NPDES permit NCS000250?*
r Yes r No
2b. Does this project meet the requirements for low density projects as defined in 15A NCAC 02H .1003(2)?
r Yes r No
2c. Does this project have a stormwater management plan (SMP) reviewed and approved under a state stormwater program or state -approved local government stormwater
program?
r Yes
r N/A - project disturbs < 1 acre
2d. Which of the following stormwater management program(s) apply:
W Local Government F State
Local Government Stormwater Programs
W Phase II W NSW r USMP r Water Supply
Please identify which local government stormwater program you are using.
City of Durham
Comments:
G. Supplementary Information
1. Environmental Documentation
r No
1a. Does the project involve an expenditure of public (federal/state/local) funds or the use of public (federal/state) land?*
r Yes r No
2. Violations (DWR Requirement)
2a. Is the site in violation of DWR Water Quality Certification Rules (15A NCAC 2H .0500), Isolated Wetland Rules (15A NCAC 2H .1300), or DWR Surface Water or Wetland Standards or
Riparian Buffer Rules (15A NCAC 2B .0200)? *
r Yes r No
3. Cumulative Impacts (DWR Requirement)
3a. Will this project result in additional development, which could impact nearby downstream water quality?*
r Yes r No
3b. If you answered "no," provide a short narrative description.
We have reviewed the "Draft Internal Policy, Cumulative impacts and the 401 Water Quality Certification and Isolated Wetlands Programs" document
prepared by the NC Division of Water Quality on April 10, 2004, version 2.1. The draft states that many private developments are unlikely to cause
cumulative impacts, including projects such as urban in -fill, most residential subdivisions and small commercial developments as well as agricultural
and silvicultural operations. The Meadows at Twin Lakes project is a residential development. Additionally, the project is located within the City of
Durham ETJ, therefore the adjacent properties that have potential for development will have the following regulations to protect downstream waters: 1)
the Neuse River Basin Riparian Buffer Protection regulations, these regulations require limited development within the riparian buffer area, in addition
Best Management Practices may be required that control nitrogen if diffuse flow cannot be achieved; 2) the Phase II NPDES Stormwater Permit
Program, this program includes permitting requirements for Municipal Separate Storm Sewer Systems (MS4s) in addition to post -construction
stormwater management requirements. We anticipate that the DWR Will advise us if any additional information is needed.
4. Sewage Disposal (DWR Requirement)
4a. Is sewage disposal required by DWR for this project?*
r Yes r Nor WA
4b. Describe, in detail, the treatment methods and dispositions (non -discharge or discharge) of wastewater generated from the proposed project. If the wastewater will be treated
at a treatment plant, list the capacity available at that plant.
The treatment method Will be discharged wastewater treated at the North Durham Water Reclamation Facility that has a 20 million gallons per day total
permitted capacity and treats approArnately 11 million gallons per day on average.
5. Endangered Species and Designated Critical Habitat (Corps Requirement)
5a. Will this project occur in or near an area with federally protected species or habitat?*
r Yes r No
5b. Have you checked with the USFWS concerning Endangered Species Act impacts?*
r Yes r No
5d. Is another Federal agency involved?*
r Yes r No r Unknown

5e. Is this a DOT project located within Division's 1-8?
r- Yes r No
5f. Will you cut any trees in order to conduct the work in waters of the U.S.?
r Yes r- No
5g. Does this project involve bridge maintenance or removal?
r- Yes r No
5h. Does this project involve the construction/installation of a wind turbine(s)?*
r Yes r No
5i. Does this project involve (1) blasting, and/or (2) other percussive activities that will be conducted by machines, such as jackhammers, mechanized pile drivers, etc.?
r- Yes r No
5j. What data sources did you use to determine whether your site would impact Endangered Species or Designated Critical Habitat?
The NC Natural Heritage Programs Data Explorer Map was used to search for elemental occurrences of federally protected species listed within and
within 1-mile of the project boundaries. It was determined based on the search that there are no elemental occurrences that are listed as federally
Threatened/Endangered within or within 1-mile of the project boundaries. References: NC Natural Heritage Program. 2019. Geographic Information
System (GIS) data. NCDNCR, Raleigh, NC. Available at http://vmw.nenhp.org/. (Accessed: February 7, 2020).
Consultation Documentation Upload
6. Essential Fish Habitat (Corps Requirement)
6a. Will this project occur in or near an area designated as an Essential Fish Habitat?*
r- Yes r No
6b. What data sources did you use to determine whether your site would impact an Essential Fish Habitat?*
The NOAA Habitat Conservation/Habitat Protection: National Marine Fish Service; Essential Fish Habitat Mapper website was referenced. No Essential
Fish Habitat was identified near the project.
7. Historic or Prehistoric Cultural Resources (Corps Requirement)
7a. Will this project occur in or near an area that the state, federal or tribal governments have designated as having historic or cultural preservation status?*
r- Yes r No
7b. What data sources did you use to determine whether your site would impact historic or archeological resources?*
The NC State Historic Preservation Office HPOWEB GIS Service interactive map was referenced on February 7, 2020, no historic listings or study list
entries or determined eligible listings were identified within the property boundaries. Additionally, no structures exist within the property boundaries.
7c. Historic or Prehistoric Information Upload
8. Flood Zone Designation (Corps Requirement)
8a. Will this project occur in a FEMA-designated 100-year floodplain?*
r- Yes r No
8c. What source(s) did you use to make the floodplain determination?*
NC Flood Risk Information System Floodplain Mapping Program and confirmation from the project engineer.
Miscellaneous
Comments
Miscellaneous attachments not previously requested.
Signature
W By checking the box and signing below, I certify that:
• I have given true, accurate, and complete information on this form;
• I agree that submission of this PCN form is a "transaction" subject to Chapter 66, Article 40 of the NC General Statutes (the "Uniform Electronic Transactions Act");
• I agree to conduct this transaction by electronic means pursuant to Chapter 66, Article 40 of the NC General Statutes (the "Uniform Electronic Transactions Act");
• I understand that an electronic signature has the same legal effect and can be enforced in the same way as a written signature; AND
• I intend to electronically sign and submit the PCN form.
Full Name:
Deborah E. Shirley
Signature

Date
5/15/2020

.�off & Environmental Consultants, PA
t,4.1'-' FaDt of Rmd,.Suife 104, Raleigh, NIC'27,61.3 - Phone ()19) 846-51M , Far. (M) 846-9407
PROPERTY OWNER CE RTIFICATION / AGENT AUTHORIZATION
.Proicet 44 S& EC Project #
Date:
The Departmej cif d -c, Army
U.S. Army Coips ofEngineers, Wilmington District
69 Darlington,Aov?caue
Wilmington, NC 28403
Attn: Field. Officc:_ R
1, the undersigned, a duly authorized owner of record of the property/properties identified herein, do
authorize representati-ves of the Wilmington District, U.S. Army Corps of Engineers (Corps) and Soil &
Environmental Consuftants,, PA (S&EQ staff (as my agent) to enter upon the property herein described
Aucr for the purpose of cai Ing on -site investigations and issuing a determination associated with Waters
j - of the U.5.sub ,e,ctt% '011--ederal jurisdiction under Section 404 of the Clean Water Act and/or Section 10 of
the Rivers and Had, oi',,�- Act of 1899, This docurnent also authorizes S&EC (as my agent) to act on my
behalf and take all ao"".1tions necessary for the processing, issuance and acceptance of a permit or
certification and any -.arid all associated standard and special conditions. "This notification supersedes any
previous corre-spondefice concerning the agent for this project.
NOnCE: This authwization, for Liability and professional courtesy reasons, is valid only for government
officials to enter the property when accompanied by S&EC staff. You should call SPEC to arrange a site
meeting prior to visit,ing the site.
PAKEL INFORi"A'AIJON: Z
Parcel Index NurnberiO4�11):
p.
Sit,c! Address,
Citv count"'.. State:
r Qfli--��'e p�lnt) property owyle" Date
Property Owner Sllgi,-aure
We hereby cortIfy the above Mforinatlon submWed In this applIcatlon Is true andaccurate to
the best of our kao wledge.

Project Number:
SBProject Manager:
1" = 1000'Scale:
04/12/2019Date:
Map Title:
Source:
Figure 1 - USGS Map
Durham County, NC
USGS NE & SE Durham Quad
¯0 1,000 2,000
Feet
13849.W1

Project Number:
SBProject Manager:
1" = 1000'Scale:
04/12/2019Date:
Map Title:
Source:
Figure 2- Soil Survey Map
Durham County, NC
Durham CountySoil Survey Sheets 22 & 27
¯0 1,000 2,000
Feet
13849.W1
1
Deborah Shirley
From:Deal, Joshua A CIV USARMY CESAW (USA) <[e-mail]>
Sent:Monday, September 23, 2019 8:39 AM
To:Steven Ball
Cc:Gibby, Jean B CIV USARMY CESAW (USA); Sullivan, Roscoe L III CIV (US)
Subject:SAW-1900-20070 (750 Junction Road): Preliminary JD Concurrence
Attachments:Sketch Map Post USACE and NCDWR.pdf
Hey Steven, 

I conducted a site visit with you at the above referenced property on July 17, 2019 to verify the limits of any potentially 
jurisdictional waters of the United States (WoUS) within the project area. I have determined that the (revised) 
delineation map that you provided to me on September 20, 2019 entitled "Wetland Sketch Map" accurately depicts the 
limits of any potentially jurisdictional WoUS within the project area. 

I will issue the Preliminary Jurisdictional Determination for this project in the order that it was received, but please note 
that I have a substantial backlog of permits and JDs to work through at this time and it may take several months. 
However, please note that delineation concurrence is more than sufficient for any required permitting under section 
404 of the Clean Water Act. 

Please feel free to contact me with any questions. 

Best, 

Josh 

Joshua A. Deal 
Regulatory Specialist 
Raleigh Field Office 
US Army Corps of Engineers  
CE‐SAW‐RG‐R 
3331 Heritage Trade Drive, Suite 105  
Wake Forest, North Carolina 27587 
Phone: (919) 554‐4884, Ext. 35 
Fax: (919) 562‐0421 
Email:  [e-mail] 

M EX. SSMH
RIM ELV: 320.17'
8" PVC INV. IN: 312.53' (N)
8" PVC INV. OUT: 312.45' (S)WTLWTLWTLWTLWTLWTLWT
L
WT
L
WT
L
WTL
WTLWTL
WTLWTLWTLWTLWTL
WTL
WTLWTLWTLDP#1
TO DP#1
AREA=77.50
AC
DRAINAGE AREA
BOUNDARY (TYP)
PROPERTY LINE (TYP)
TC PATH
SHEET FLOW=75'
TC PATH
SHALLOW
FLOW=348'
TC PATH
CHANNEL FLOW=3,095'
TEST TC PATH
1-, 2-, 10-YEAR
ANALYSIS
TO
WETLAND#1
AREA=25.54 AC (390)(385)(380)(375)(370)(365)(360)(355)(360)(365)(370)(375
)
(3
8
0
)
(385)(390)(395
)(400)(395)(395)(405)(415)(410)(410)(405
)(400)(395)(390)(405)(400)(395)(390)(
3
8
5
)
(
3
9
0
)(380)(375)(370)(365)
(375)(380)(375)(370)(365)(360)(355)(345)(350)(340
)
(335
)
(340
)
(345
)(405)(400)(395
)(390)(385)(380)(375)(370)(365)(385
)
(
3
8
0
)
(375
)(370)(365
)(365)(370)
(375)(355)(360)(365)(370)(375)(390)(385
)
(385)
(385)
(380)
(37
5
)(360)(
3
5
5
)
(350
)
(365)
(360
)
(355
)
365385380375 370365370375370375380380375370380375370365355365365
36
5
355
355 360
365
360
WETLAND#1NDA
SW2
POST-
DEVELOPMENT
DRAINAGE MAP
0
SCALE: 1" =
100 200 400
200'NSCALE:
POST-DEVELOPMENT DRAINAGE MAP
1"=200'SW2
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COPYRIGHT 2020 THIS DOCUMENT AND THE DESIGN ARE THE PROPERTY OF HORVATH ASSOCIATES, P.A. ANY REPRODUCTION WITHOUT PRIOR WRITTEN CONSENT IS PROHIBITED©
DRAWN BY: CHECKED BY:
DATE
PROJECT NO.
SHEET NO.
1 6 C O N S U L T A N T P L A C E , S U I T E 2 0 1
D U R H A M , N O R T H C A R O L I N A 2 7 7 0 7
P 9 1 9 .4 9 0 .4 9 9 0 F 9 1 9 .4 9 0 .8 9 5 3
NORTH CAROLINA BOARD OF
EXAMINERS FOR ENGINEERS AND
SURVEYORS LICENSE NO.: C-0676
www.horvathassociates.com
HORVATH
A S S O C I A T E S
CIVIL ENGINEERING
LAND PLANNING
LANDSCAPE ARCHITECTURE
STORMWATER MANAGEMENT
DURHAM COUNTY750 JUNCTION ROAD DURHAM, NORTH CAROLINANDA
FEBRUARY 7, 2020
1924
PUBLIC WORKS DEPARTMENT
APPROVED
CITY OF DURHAM
TRANSPORTATION
STORM WATER
ENGINEERING
PIN: 0841-02-89-2616
PID: 168216
MEADOWS AT TWINLAKESPIN: 0841-79-54-2105
PID: 168330
DATE
DATE
DATE
811 - CALL BEFORE YOU DIG
<PRELIMINARY PLAT>
COPYRIGHT 2020 THIS DOCUMENT AND THE DESIGN ARE THE PROPERTY OF HORVATH ASSOCIATES, P.A. ANY REPRODUCTION WITHOUT PRIOR WRITTEN CONSENT IS PROHIBITED©16 CONSULTANT PLACE, SUITE 201DURHAM, NORTH CAROLINA 27707P 919.490.4990 F 919.490.8953NORTH CAROLINA BOARD OFEXAMINERS FOR ENGINEERS ANDSURVEYORS LICENSE NO.: C-0676www.horvathassociates.comHORVATHA S S O C I A T E SCIVIL ENGINEERINGLAND PLANNINGLANDSCAPE ARCHITECTURESTORMWATER MANAGEMENT750 JUNCTION ROADDURHAM, NORTH CAROLINAMEADOWS AT TWIN LAKESNEUSE BASIN - IMPACT MAPSMLJ3/4/2020NDA1"=N/AIM-1PROJECT # 1924CHECK BYDRAWN BYVICINITY MAPNO SCALENJUN
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CLAYTON ROADCHEEK ROADSITEDEVELOPMENT SUMMARY:SITE SUMMARYGROSS LAND AREA:1,752,840 SF (40.24 AC)RS-20 LAND AREA:4.43 ACRS-10(D) LAND AREA:33.32 ACRS-8(D) LANE AREA:2.49 ACAREA OF DISTURBANCE:1,250,175 SF (28.70 AC)EXISTING ZONING:RS-20, RS-10(D), RS-8(DEXISTING USE:VACANTPROPOSED USE:SINGLE FAMILY RESIDENTIALWATERSHED:F/J-BRIVER BASIN:NEUSECITY LIMIT: INSIDE & OUTSIDETIER: SUBURBANLOT SUMMARYTOTAL PROPOSED UNITS:88MAXIMUM BUILDING HEIGHT:35'RS-10(D) - CLUSTER SUBDIVISIONLOT AREA:5,000 SF MINLOT WIDTH:40' MINSTREET YARD SETBACK:20'SIDE YARD SETBACK:6' MIN/13' TOTALREAR YARD SETBACK:25'RS-20 - CONVENTIONAL SUBDIVISIONLOT AREA:20,000 SF MINLOT WIDTH:100' MINSTREET YARD SETBACK:35'SIDE YARD SETBACK:12' MIN/30' TOTALREAR YARD SETBACK:25'DENSITY SUMMARYRS-20 (2 DU/AC MAX)4.43 x 2 = 8 MAX (2 PROPOSED)RS-10(D) (4 DU/AC MAX)33.32 X 4= 133 MAX (85 PROPOSED)RS-8(D) (5 DU/AC MAX)2.49 X 5= 12 MAX (0 PROPOSED)PARKING SUMMARY2 PARKING SPACES WILL BE PROVIDED AT EACH UNIT BY THE USE OF A GARAGEAND/OR DRIVEWAY. 2 SPACES PROVIDED. 1 HC VAN ACCESSIBLE SPACE PROVIDED.IMPERVIOUS SUMMARYMAXIMUM ALLOWABLE IMPERVIOUS AREA: 420,681 SF (9.657 AC) (24.00%)EXISTING IMPERVIOUS AREA (REMOVED): 5,667 SF (0.130 AC)TOTAL PROPOSED IMPERVIOUS AREA: 420,677 SF (9.657 AC) (24.00%)STREETS / SIDEWALKS: 127,740 SF (2.933 AC) (7.29%)LOTS (3,175 SF PER LOT) 273,050 SF (6.268 AC) (15.58%)LOTS (5,000 SF PER LOT) (RS-20 LOTS)10,000 SF (0.229 AC) (0.57%)MAIL KIOSK 44 SF (0.001 AC) (0.00%)RESERVE9,843 SF (0.226 AC) (0.56%)TREE COVERAGE SUMMARYREQUIRED TREE COVERAGE / OPEN SPACE:350,568 SF (20.00%)PROPOSED TREE COVERAGE / OPEN SPACE:456,298 SF (26.03%)OPEN SPACE SUMMARYREQUIRED OPEN SPACE AREA (EXCLUDES RS-20)233,983 SF (5.371 AC) (15%)REQUIRED OPEN SPACE AREA:322,287 SF (7.399 AC) (LOTS)TOTAL REQUIRED OPEN SPACE AREA:552,955 SF (12.770 AC)PROPOSED OPEN SPACE AREA:843,818 SF (19.371 AC)REQUIRED ACTIVE OPEN SPACE:77,994 SF (1.791 AC) (13 OF 15%)PROPOSED ACTIVE OPEN SPACE:84,878 SF (1.949 AC)*SEE LANDSCAPE PLAN FOR ADDITIONAL CALCULATIONSZ1 - 18354UTILITYCROSSINGZ2 - 1229PERMANENTTEMPORARY0 LF0 SF0 LF0 SF2,124 SF0.049 AC0 SF0 ACPERMANENTTEMPORARYPERMANENTTEMPORARYZ1 - 6272STORMOUTFALLZ2 - 430PERMANENTTEMPORARY0 LF0 SF0 LF0 SFPERMANENTTEMPORARY 0 SF0 AC0 SF0 ACTYPESQ. FT.CHANNELLF & SFBUFFERZ1 - 8261STORMOUTFALLZ2 - 761PERMANENTTEMPORARY0 LF0 SF0 LF0 SFIMPACTNO.WETLANDSF & ACPERMANENTTEMPORARY 0 SF0 AC0 SF0 ACSUMMARY OF IMPACTSINDEX OF DRAWINGS:IM-1COVER SHEETIM-2EXISTING CONDITIONSIM-3PROPOSED CONDITIONSIM-4IMPACT 1 PLAN & PROFILEIM-5IMPACT 2 PLAN & PROFILEIM-6IMPACT 3 PLAN & PROFILEIM-7IMPACT 4 PLAN & PROFILEOWNERCROSSLAND MEADOWS LLC5960 FAIRVIEW ROAD SUITE 200CHARLOTTE, NC 28210DEVELOPERDAN RYAN BUILDERSJAY COLVIN3000 RDU CENTER DRIVE, SUITE 202MORRISVILLE, NC 27560P: (919) [e-mail]/LAND PLANNERMATT JONES, PEPROJECT MANAGER NAME16 CONSULTANT PLACE, SUITE 201DURHAM, N.C. 27707P: [phone]F: (919) [e-mail] OF STREAMS AND WETLANDSPERMANENT -NO PERMANENTLOSSTEMPORARYCONSTRUCTIONIMPACTZ1 - 84343ROADCROSSINGZ2 - 4671140 LF634 SF7 LF69 SF1,560 SF0.036 AC76 SF0.002 AC
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Z2 Z2Z2Z2Z2Z2Z2Z2Z2COPYRIGHT 2020 THIS DOCUMENT AND THE DESIGN ARE THE PROPERTY OF HORVATH ASSOCIATES, P.A. ANY REPRODUCTION WITHOUT PRIOR WRITTEN CONSENT IS PROHIBITED©16 CONSULTANT PLACE, SUITE 201DURHAM, NORTH CAROLINA 27707P 919.490.4990 F 919.490.8953NORTH CAROLINA BOARD OFEXAMINERS FOR ENGINEERS ANDSURVEYORS LICENSE NO.: C-0676www.horvathassociates.comHORVATHA S S O C I A T E SCIVIL ENGINEERINGLAND PLANNINGLANDSCAPE ARCHITECTURESTORMWATER MANAGEMENT750 JUNCTION ROADDURHAM, NORTH CAROLINAMEADOWS AT TWIN LAKESEXISTING CONDITIONSMLJ3/4/2020NDA1"= 200'IM-2PROJECT # 1924CHECK BYDRAWN BYMATCHLINEMATCHLINEMATCHLINEMATCHLINEIMPACTAREA 4SEE SHEETIM-7WETLANDW1STREAM DSTREAM EIMPACT AREA 3SEE SHEET IM-6WETLANDLW5STREAM BWETLANDLW3WETLANDW4WETLANDLW4WETLANDW5WETLANDLW2WETLANDW3STREAM AWETLANDLW6STREAM CWETLANDW2(DRAINED POND)STREAM AIMPACT AREA 2SEE SHEET IM-5IMPACT AREA 1SEE SHEET IM-4STREAM FWETLANDLW1
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Z2 Z2Z2Z2Z2Z2Z2Z2Z2COPYRIGHT 2020 THIS DOCUMENT AND THE DESIGN ARE THE PROPERTY OF HORVATH ASSOCIATES, P.A. ANY REPRODUCTION WITHOUT PRIOR WRITTEN CONSENT IS PROHIBITED©16 CONSULTANT PLACE, SUITE 201DURHAM, NORTH CAROLINA 27707P 919.490.4990 F 919.490.8953NORTH CAROLINA BOARD OFEXAMINERS FOR ENGINEERS ANDSURVEYORS LICENSE NO.: C-0676www.horvathassociates.comHORVATHA S S O C I A T E SCIVIL ENGINEERINGLAND PLANNINGLANDSCAPE ARCHITECTURESTORMWATER MANAGEMENT750 JUNCTION ROADDURHAM, NORTH CAROLINAMEADOWS AT TWIN LAKESPROPOSED CONDITIONSMLJ3/4/2020NDA1"= 200'IM-3PROJECT # 1924CHECK BYDRAWN BYMATCHLINEMATCHLINEMATCHLINEMATCHLINEIMPACTAREA 4SEE SHEETIM-7WETLANDW1STREAM DSTREAM EIMPACT AREA 3SEE SHEET IM-6WETLANDLW5STREAM BWETLANDLW3WETLANDW4WETLANDLW4WETLANDW5WETLANDLW2WETLANDW3STREAM AWETLANDLW6STREAM CWETLANDW2(DRAINED POND)STREAM AIMPACT AREA 2SEE SHEET IM-5IMPACT AREA 1SEE SHEET IM-4NZONE 1 IMPACTZONE 2 IMPACTSTREAM IMPACTTEMP. STREAM IMPACTRIPRAP (PERMANENT)STREAM FWETLANDLW1WETLAND IMPACT(TEMPORARY)WETLAND IMPACT(PERMANENT)
TPFTPFTPFTPFTPFTPFTPFTPFTPFTPFTPFTPF34
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