20170317 Ver 1_401 Application_20170317

SINCE FROEHLING & ROBERTSON, INC.
Engineering Stability Since 1881
NC Engineering License # F-0266
310 Hubert Street
o Raleigh, North Carolina 27603-2302 1 USA
1881
T 919.828.34411 F 919.582-0304
March 20, 2017
Ms. Tasha Alexander
United States Army Corps of Engineers
Raleigh Regulatory Field Office
3331 Heritage Trade Drive, Suite 105
Wake Forest, INC 27587
Re: Pre -Construction Notification for NWP 39, WQC 3890, and Jordan Watershed Buffer
Authorization
WCPSS M-16 Site (Proposed Northwest Cary Middle School)
130 Winding Pine Trail
Cary, Wake County, North Carolina
F&R Project No. 66T-0289-0001
Ms. Alexander:
Froehling & Robertson, Inc. (F&R) is submitting this Pre -Construction Notification (PCN) to the
US Army Corps of Engineers (USACE) for written concurrence for allowable impacts to "Waters
of the United States." F&R is also sending a copy to the North Carolina Division of Water
Resources (NCDWR). F&R has been contracted by Wake County Public School System (WCPSS)
to perform wetland consulting services for the above -referenced project site located in Wake
County, North Carolina and within the Cape Fear River Basin (Jordan Watershed).
The site currently composed of two parcels (PINS 0726-86-1425 & 0726-85-0785) totaling 41.21
acres and is located just southwest of the existing Alston Ridge Elementary School. WCPSS is
proposing to construct a new middle school facility on the Property. The site currently consists
of wooded and overgrown areas, with several dilapidated residential and agricultural
structures. The proposed project scope includes the construction of a new middle school to
support a student population of 1,450 students and will include associated grounds, including
paved areas and recreational areas. Two access roads are required for the middle school. The
main entrance to the site will be from the northwest corner.
The impacts to Waters of the United States for this project, as proposed, will be:
• 0.41 acres of wetland impacts (0.16 acres riparian; 0.25 acres non -riparian);
• 146 linear feet of permanent stream impacts.
Additionally, riparian buffer impacts associated with the road crossing are "allowable" totaling
8,760 square feet for Zone 1 and 5,556 square feet for Zone 2.
HQ: 3015 DUMBARTON ROAD RICHMOND, VA 23228 USA T 804.264.2701 F 804.264.1202 www.fandr.com
VIRGINIA • NORTH CAROLINA • SOUTH CAROLINA • MARYLAND • DISTRICT OF COLUMBIA
A Minority -Owned Business

F&R understands that compensatory mitigation will be required for wetland impacts at a ratio
of 2:1 for both riparian and non -riparian areas. F&R has confirmed that non -riparian credits are
available within the "Cripple Creek Stream & Wetland Mitigation Bank" through Restoration
Systems, LLC (see attached "Statement of Mitigation Credit Availability"). However, wetland
credits sufficient to cover the riparian wetland impact were not available from a private bank
within the project's CU. Therefore, F&R proposes that riparian wetland credits be purchased
from the NCDEQ Division of Mitigation Services (DMS) In-Lue Fee. A letter of acceptance from
the DMS is attached.
F&R is submitting this Pre -Construction Notification (PCN) with associated USGS Map, stream
and buffer impact drawings, and project plan drawings to the USACE and NCDWR for written
concurrence for the identified impacts. Should your office have questions pertaining to any of
the information presented within the following PCN or its attachments, please contact the
undersigned.
Respectfully Submitted,
FROEHLING & ROBERTSON, INC.
Elias N. Ruhl
Environmental Services Manager
WCPSS M-16 NW Cary Middle School PCN Submittal March 20, 2017
Cary, Wake County, North Carolina F&R Project No.66T--0289-0001

11"I 0�
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Office Use Only:
Corps action ID no.
DWQ project no.
Form Version 1.4 January 2009
Page 1 of 10
PCN 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: NWP39 or General Permit (GP) number: 3890
1c.
Has the NWP or GP number been verified by the Corps?
❑X Yes ❑ 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.
❑ Yes ❑X No
1 h.
Is the project located within a NC DCM Area of Environmental Concern (AEC)?
❑ Yes ❑X No
2.
Project Information
2a.
Name of project:
WCPSS M-16 Site (Proposed Northwest Cary Middle School)
2b.
County:
Wake County
2c.
Nearest municipality / town:
Cary
2d.
Subdivision name:
N/A
2e.
NCDOT only, T.I.P. or state project no:
N/A
3.
Owner Information
3a.
Name(s) on Recorded Deed:
Wake County Board of Education
3b.
Deed Book and Page No.
Deed Book 012957, Deed Page 01206
3c.
Responsible Party (for LLC if
applicable):
3d.
Street address:
1551 Rock Quarry Road
3e.
City, state, zip:
Raleigh, NC 27610-4145
3f.
Telephone no.:
919-588-3564
3g.
Fax no.:
919-856-8288
3h.
Email address:
[e-mail]
Page 1 of 10
PCN Form — Version 1.4 January 2009

4.
Applicant Information (if different from owner)
4a.
Applicant is:
❑ Agent ❑X Other, specify: Wake County Public School System
4b.
Name:
Jason Phelan
4c.
Business name
(if applicable):
Wake County Public School System, Facilities Design & Construction
4d.
Street address:
1429 Rock Quarry Road, Suite 116
4e.
City, state, zip:
Raleigh, NC 27610
4f.
Telephone no.:
[phone]
4g.
Fax no.:
[phone]
4h.
Email address:
[e-mail]
5.
Agent/Consultant Information (if applicable)
5a.
Name:
Mr. Elias Ruhl
5b.
Business name
(if applicable):
Froehling & Robertson, Inc. (F&R)
5c.
Street address:
310 Hubert Street
5d.
City, state, zip:
Raleigh NC 27603
5e.
Telephone no.:
919-828-3441
5f.
Fax no.:
919.828.5751
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):
PIN 0726861425 and 0726850785
1 b.
Site coordinates (in decimal degrees):
Latitude: 35.853698 Longitude: -78.903617
1 c.
Property size:
41.21 acres
2.
Surface Waters
2a.
Name of nearest body of water to proposed project:
Kit Creek
2b.
Water Quality Classification of nearest receiving water:
WS-IV;NSW
2c.
River basin:
Cape Fear
3.
Project Description
3a. Describe the existing conditions on the site and the general land use in the vicinity of the project at the time of this
application:
The project site currently consist of wooded land and disturbed successional forest. Two home sites were previously present on the property and have
been vacant for a number of years.
3b.
List the total estimated acreage of all existing wetlands on the property: 1.17
3c.
List the total estimated linear feet of all existing streams (intermittent and perennial) on the property: 1,102
3d. Explain the purpose of the proposed project:
The purpose of the project is to construct a new middle school (Northwest Cary Middle School) for the growing Wake County and Cary area.
3e. Describe the overall project in detail, including the type of equipment to be used:
Clearing and grading for construction of school and associated parking, facilities, and access roads utilizing typical construction equipment and BMPs.
4.
Jurisdictional Determinations
4a.
Have jurisdictional wetland or stream determinations by the
Corps or State been requested or obtained for this property /
project (includingall prior phases in the past?
❑X Yes ❑ No ❑ Unknown
Comments:
4b.
If the Corps made the jurisdictional determination, what type
of determination was made?
Preliminary ❑ Final
4c.
If yes, who delineated the jurisdictional areas?
Name (If known): Greg Price and Paul Hughes with F&R
Agency/Consultant Company: F&R
Other:
4d. If yes, list the dates of the Corps jurisdictional determinations or State determinations and attach documentation.
Corps provided field determination on April 20, 2016. Stream Determinations were made September 6, 2016 and the letter was issued by DWR on
September 8, 2016 (NBBRO #16-283).
5.
Project History
5a.
Have permits or certifications been requested or obtained for
this project (including all prior phases) in the past?
❑ Yes ❑X No ❑ 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):
❑X 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 -
Fill
Small -Basin Wetland
No
Corps
0.04
W2 -
Fill
Small -Basin Wetland
Yes
Corps
0.17
W3 -
Fill
Small -Basin Wetland
Yes
Corps
0.03
W4 -
Fill
Bottomland Hardwood Forest
Yes
Corps
0.16
W5 -
Choose one
Choose one
Yes/No
Corps
W6 -
Choose one
Choose one
Yes/No
2g. Total Wetland Impacts:
0.41
2h. Comments:
See impact maps attached
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 -
Culvert
LIT of Kit Creek
PER
Corps
4
146
S2 -
Choose one
S3 -
Choose one
-
S4 -
Choose one
-
S5 -
Choose one
-
S6 -
Choose one
-
3h. Total stream and tributary impacts
146
3i. Comments:
See impact maps attached
Page 4 of 10
PCN Form — Version 1.4 January 2009

4. Open Water Impacts
If there are proposed impacts to lakes, ponds, estuaries, tributaries, sounds, the Atlantic Ocean, or any other open water of
the U.S. then indivi ually list all open water impacts below.
4a.
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
02 -
Choose one
Choose
03 -
Choose one
Choose
04 -
Choose one
Choose
4f. Total open water impacts
4g. Comments: No open water impacts are proposed.
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.
Wetland Impacts (acres)
5d.
Stream Impacts (feet)
5e.
Upland
(acres)
Flooded
Filled
Excavated
Flooded
Filled
Excavated
P1
Choose one
P2
Choose one
5f. Total:
5g. Comments:
Pond or Lake construction is not proposed.
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?
❑ Neuse ❑ Tar -Pamlico ❑ Catawba ❑ Randleman ❑X Other: Cape Fear
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
Road Crossing
UT of Kit Creek
No
8,760
5,556
B2 -
Yes/No
B3 -
Yes/No
B4 -
Yes/No
B5 -
Yes/No
B6 -
Yes/No
6h. Total Buffer Impacts:
8,760
5,556
6i. Comments:
Project is in the Jordan Watershed of the Cape Fear River Basin. Buffer impacts are within "allowable" thresholds (see impact maps)
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.
Please see the attached avoidance and minimization summary included within the Purpose & Need Statement.
1 b. Specifically describe measures taken to avoid or minimize the proposed impacts through construction techniques.
Please see the attached avoidance and minimization summary included within the Purpose & Need Statement.
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?
❑X Yes ❑ No
2b.
If yes, mitigation is required by (check all that apply):
❑ DWQ ❑X Corps
2c.
If yes, which mitigation option will be used for this
project?
❑Q Mitigation bank
❑X Payment to in -lieu fee program
❑ Permittee Responsible Mitigation
3.
Complete if Using a Mitigation Bank
3a.
Name of Mitigation Bank: Cripple Creek Stream & Wetland Mitigation Bank
3b.
Credits Purchased (attach receipt and letter)
Type: Non -riparian wetland
Type: Choose one
Type: Choose one
Quantity: 0.25
Quantity:
Quantity:
Only 0.025 acres of Riparian Wetland credits are available; 0.30 are needed being purchased rom the
3c. Comments:
4.
Complete if Making a Payment to In -lieu Fee Program
4a.
Approval letter from in -lieu fee program is attached.
❑X 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:
0.16 acres
4f.
Non -riparian wetland mitigation requested:
acres
4g.
Coastal (tidal) wetland mitigation requested:
acres
4h.
Comments: Sufficient riparian wetland credits were not available from private mitigation banks within the project's CU.
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).
Riparian buffer impacts are below mitigation thresholds.
6h. Comments:
Page 7 of 10

E.
Stormwater Management and Diffuse Flow Plan (required by DWQ)
1.
Diffuse Flow Plan
1a.
Does the project include or is it adjacent to protected riparian buffers identified
❑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.
❑X Yes ❑ No
2.
Stormwater Management Plan
2a.
What is the overall percent imperviousness of this project?
31%
2b.
Does this project require a Stormwater Management Plan?
❑X Yes ❑ No
2c.
If this project DOES NOT require a Stormwater Management Plan, explain why:
2d.
If this project DOES require a Stormwater Management Plan, then provide a brief, narrative
description of the plan:
The site stormwater run-off discharges to the south into Kit Creek that is within the Jordan Lake Watershed. The site is designed to meet the Town of
Cary current stormwater requirements. The site peak stormwater discharges shall meet pre -development rates for the 1, 2, 5 and 10 -year 24 hour
Design Storm events as well as providing 85% removal of total suspended solids and stormwater treatment
of the first 1 -in run-off to provide nitrogen
reduction.
2e.
Who will be responsible for the review of the Stormwater Management Plan?
Town of Cary
3.
Certified Local Government Stormwater Review
3a.
In which localgovernment's jurisdiction is thisproject?
Town of Cary
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
❑Coastal counties
❑HQW
4a.
Which of the following state -implemented stormwater management programs apply
❑ORW
(check all that apply):
❑Session Law 2006-246
❑ Other:
4b.
Has the approved Stormwater Management Plan with proof of approval been
❑ Yes ❑ No
attached?
5.
DWQ 401 Unit Stormwater Review
5a.
Does the Stormwater Management Plan meet the appropriate requirements?
❑X 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
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.
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.
The proposed project will have an estimated total peak outflow of 63,360 gal/day and be connected by gravity sewer line to the
Town of Cary's sanitary
sewer system and treated at the Western Wake Regional Wastewater Management Facility.
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 X❑ No
habitat?
5b. Have you checked with the USFWS concerning Endangered Species Act
0 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?
Natural Heritage Program GIS Data, USFWS County list of Protected Species, and USFWS IPac system
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?
http://www.habitat.noaa.gov/protection/efh/efhmapper/index.html
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 ❑X 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 SHPO GIS Data and review request
8. Flood Zone Designation (Corps Requirement)
8a. Will this project occur in a FEMA -designated 100 -year floodplain?
❑ Yes ❑X No
8b. If yes, explain how project meets FEMA requirements:
8c. What source(s) did you use to make the floodplain determination?
FEMA FIRM 3720072600K dated 2-2-2007
Elias N. Ruhl
J !
03-20-2017
Applicant/Agent's Printed Name
Date
Applicant/Agent's Signature
(Agent's signature is valid only if an authorization
letter from the applicant is provided.
Page 10 of 10

CIH design, .a.
p
400 Regency Forest Drive, Suite 120
Cary, North Carolina 27918
Phone: [phone] Fax: [phone]
M-16 MIDDLE SCHOOL
WETLAND AND STREAM IMPACT
PURPOSE AND NEED STATMENT
PURPOSE AND NEED:
The northwest area of Wake County is in need of a new middle school to serve the existing
community population as well as its continued growth. The Wake County Board of Education
and Wake County Public School System have been planning a middle school in this area since
2008. This is a formal request to approve wetland and stream impacts as a result of the need
for a public middle school in this area and associated design considerations and code
requirements that affect those considerations.
A wetland and stream delineation was performed in February 2016 by Froehling & Robertson.
Those delineations were field surveyed by McKim and Creed Surveyors in July 2016. A final
determination was provided in September 2016.
The proposed use is institutional, public middle school, and by nature requires standard
program elements such as facility size requirements to accommodate the required student
population, ingress/egress requirements, outdoor recreation requirements, service area
requirements, program element adjacency and separation requirements, NCDOT MSTA traffic
separations and on-site stacking requirements, town code parking requirements, fire and public
safety requirements, and accessibility requirements.
Code that requires the separation of parent and bus/service traffic dictate the need for a new
road to be constructed to access the site from the north and a new road extension of existing
Winding Pine Trail. The new road to the north must be constructed to meet the Town of Cary
requirements and is located in an existing 90 foot access easement provided specifically to
access this property for this purpose. The extension of Winding Pine Trail so happens to align
directly with existing environmental features on the site. The design team has done its best to
reduce the amount of impact given the restrictions of tie-in location and code required road
design criteria.
Other factors affecting the ability to preserve the identified wetlands and stream channel are
code required buffers, environmental buffers, existing wetlands (minimize to the extent
possible), steep topography, poor soils and shallow rock.
All factors listed above have been taken into consideration to site the proposed site elements in
a configuration to effectively reduce the amount of grading, reduce the amount and height of

retaining walls and to minimize the disturbance to existing wetlands. Achieving these items
will compact the development footprint, reduces the amount, height and need for costly
retaining walls, considers the reduction of potential rock removal and construction schedule to
open the school on time.
GENERAL PROJECT DESCRIPTION:
The proposed M-16 Middle School site is located at 130 Winding Pine Trail, south and west of
the existing Alston Ridge Elementary School. Currently, the site is vacant. The site composed
of two parcels for a total of approximately 41.21 acres; PIN: 0726-86-1425 &0726-85-0785;
Zone: R-40 in White Oak Township. The two parcels will be re -combined into one.
The site is centered on a high spot and slopes in all directions. Natural drainage is to the
northwest, northeast, southwest and southeast. There is significant grade change from the
center of the site to the perimeter boundary. The northwest and south west corners contain
steep slopes. Retaining walls WILL be required.
A Traffic Impact Analysis for the middle school improvements is completed and approved by
NCDOT and the Town of Cary.
A public road extension will be required in two locations. One extension is from the existing
Alston Ridge Elementary School entrance drive aligned with Cartecay Drive along an existing
90 foot access easement (north side of adjacent property) to the northeast corner of the site.
This drive will be Standard Collector Avenue street section as defined by the Town of Cary
which measures 49' back to back with a 5 foot sidewalk on one side in a 70' public right-of-
way. This extension will require realignment and widening of the existing elementary school
drive to allow right-of-way for the proposed public road. This will require a re -design of the
existing stormwater BMP located on the elementary school site. The second extension will be
the Winding Pine Trail extension along the southern boundary of the site. The Winding Pine
Trail extension will be a Standard Minor Local street section as defined by the Town of Cary
which measures 27' back to back with a 5 foot sidewalk on one side in a 50' public right-of-
way.
Two access points will be provided for the middle school separating the parent queue and bus
service. The main entrance to the site will be from the northwest corner. This entrance will be
for parents and staff only. Approximately 3,140 linear feet of stacking is proposed to meet the
requirements set forth by the North Carolina Department of Transportation (NCDOT) MSTA.
Double stacking will be utilized to meet the stacking requirement. The second entrance will be
from the south off the Winding Pine Trail extension. This entrance will be for bus and service
only. Overnight parking for 20 bus will be provided at this location.
Pedestrian connections are made throughout the site from all buildings to parking and field
areas. These connections are located to minimize the pedestrian/vehicular conflict.

DESIGN CONSIDERATIONS:
The proposed middle school is new construction with a core student population of 1,450
students. The proposed building is located just south of the middle of the site along the eastern
property line. The main entrance has a north facing orientation with parent queuing to the west
and north of the building. The bus loop and service area are located to the south side of the
building. Parking is provided in two locations. Staff/visitor parking is located north of the
main entrance and staff/event parking is located to the west of the building. 196 parking
spaces are shown. This allows for parking to be in close proximity to the front entry, side
entry, softball field and track and field. The parent stacking is separated from the bus/service
operations. All parent, staff and event vehicular traffic is directed to the northern public road
extension which keeps this volume of traffic out of the adjacent single family neighborhood
along Winding Pine Trail. The track and multi-purpose field is located to the northwest
portion of the site and farthest way from existing single-family residential. The softball field
and staff/event parking is centered along an east/west pedestrian route which aligns with the
west facing entrance to the school.
Two access points are proposed. The main entrance will be located off the northern public road
extension. When entering the site, the drive heads south and then turns west to run south along
the west side of the building to a turn -around circle, then back north and a right turn, east, to
the front of the building where the parent queue loading and unloading zone is located. Double
stack is utilized to meet queueing requirements. After loading/unloading occurs it is a single
lane exit back to the main entrance. The second access point is from Winding Pine Trail
approximately at the mid -point. This drive will be the bus/service drive entry/exit. There will
be overnight parking provided for 20 busses.
NCDOT MSTA requires that the parent traffic be separated from the bus and service traffic.
This design separates the parent loading/unloading users from the bus/service area and from
the adjacent existing single-family residential.
Emergency vehicles will be able to access the site from both access points. The parent queue
drive is designed to meet the required width for emergency vehicle access. The parent drop-off
drive and bus/service drive will be connected via a 26' wide fire lane along the east side of the
building. Two gates will be provided for controlled access.
Stormwater conveyance, treatment and detention will be provided to meet Town of Cary
regulations. Multiple devices will be required to meet these regulations which include, peak
flow controls and water quality controls. Nitrogen reduction will be required and can be
reduced through the use of SCM's. After meeting with the Town of Cary to discuss managing
the storm water, it was stated the "Buy Down" program is suspended and nitrogen will need to
be controlled on-site. There are three proposed "Constructed Wetland" SCM's for storm water
run-off and quality control. They are located in the northwest, southwest and southeast corners
of the site.

AVOIDANCE & MINIMIZATION:
All practicable efforts have been made in the design of the proposed facility to avoid and
minimize impacts to the wetlands, streams and buffered areas within the site. The width of the
proposed stream crossing on the northeast portion of the site was reduced to the minimum
width allowable and the access roads and parking areas were modified significantly to reduce
the impacts to identified wetland areas on the southeast portion of the site. We feel that the
proposed design reflects a significant effort to protect the environment and allow for the
functionality of the current and future needs of the campus.

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FROEHLING & ROBERTSON, INC.
ENGINEERING • ENVIRONMENTAL* GEOTECHNICAL
310 Hubert Street
Raleigh, North Carolina 27603-2302 I USA
T 919.828.34411 F 919.828.5751
Client: Wake County Public School System
Project: M-16 NW Cary Middle School
Location: Wake County, North Carolina
F&R Project No: 66T-0289
Source: Google Maps
Date: May 2016 Scale Not Known Figure k1

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FROEHLING & ROBERTSON, INC.
ENGINEERING • ENVIRONMENTAL • GEOTECHNICAL
310 Hubert Street
Raleigh, North Carolina 27603-2302 1 USA
T 919.828.34411 F 919.828.5751
Client: Wake Count Public School System
Project: M-16 NW CarV Middle School
Location: Wake County, North Carolina
F&R Project No: 66T-0289
Source: "Green Level, NC" dated 1993
Date: May 2016 Scale Not Shown Figure #2

SITE OBSERVATION MAP North
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FROEHLING & ROBERTSON, INC.
ENGINEERING • ENVIRONMENTAL* GEOTECHNICAL
310 Hubert Street
North Carolina 27603-2302 1 USA
T 919.828.34411 F 919.828.5751
Client Wake County Public School System
Pro ect: M-16 NW Cary Middle School
Location: Wake County, North Carolina
Project No: 89
F&RRaleigh,
USDA I
Source: USDA Imagery —dated 2014
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FROEHLING & ROBERTSON, INC.
ENGINEERING • ENVIRONMENTAL • GEOTECHNICAL
310 Hubert Street
Raleigh, North Carolina 27603-2302 1 USA
T 919.828.3441 1 F 919.828.5751
Client: Wake County Public School System
Project: M-16 NW Cary Middle School
Location: Wake County, North Carolina
F&R Project No: 66T-0289
Source: I Wake County Soil Survey (1970)
Date: May 2016 1 Scale Not Shown Figure #4

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WETLAND TYPE
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FROEHLING & ROBERTSON, INC.
ENGINEERING • ENVIRONMENTAL* GEOTECHNICAL
310 Hubert Street
Raleigh, North Carolina 27603-2302 1 USA
T 919.828.34411 F 919.828.5751
Client: Wake County Public School System
Project: M-16 NW CarV Middle School
Location: Wake County, North Carolina
F&R Project No: 66T-0289
Source: US NWI Mapper
Date: May 2016 Scale As Shown Figure #5

SINCE FROEHLING & ROBERTSON, INC.
Engineering Stability Since 1881
NC Engineering License # F-0266
310 Hubert Street
® Raleigh, North Carolina 27603-2302 1 USA
1881
T 919.828.34411 F 919.828.5751
March 10, 2016
Ms. Tasha Alexander
US Army Corps of Engineers
Raleigh Regulatory Field Office
3331 Heritage Trade Drive, Suite 105
Wake Forest, NC 27587
Re: Request for Preliminary Jurisdictional Determination
Proposed WCPSS M-16 Site
130 Winding Pine Trail
Cary, Wake County, North Carolina
F&R Project No. 66T-0289
Ms. Alexander:
Froehling & Robertson, Inc. (F&R) has completed a jurisdictional stream and wetland
delineation on the above-mentioned project for Wake County Public School System (WCPSS).
We request your review of the attached documentation and mapping, and issuance of a
Preliminary Jurisdictional Determination for this project.
Attached please find the following information:
➢ Complete report submitted to WCPSS with appropriate mapping
Preliminary Jurisdictional Determination (JD) form
➢ Wetland and Stream Data Forms
➢ Proposed Site Plan
If you have any questions, need additional information, or would like to schedule a site visit,
please contact me at your earliest convenience at [phone] or [e-mail]@fandr.com.
Respectfully Submitted,
FROEHLING & ROBERTSON, INC.
Gregory W. Price
Natural Resources Specialist
HQ: 3015 DUMBARTON ROAD RICHMOND, VA 23228 USA T 804.264.2701 F 804.264.1202 www.fandr.com
VIRGINIA • NORTH CAROLINA • SOUTH CAROLINA • MARYLAND • DISTRICT OF COLUMBIA
A Minority -Owned Business

Jurisdictional Determination Request
A. PARCEL INFORMATION
Street Address: 120 and 130 Winding Pine Trail
City, State: Cary, North Carolina
County: Wake
Directions: Along the north side of Winding Pine Trail, just west of the intersection with
Seahorse Court in Cary, North Carolina.
Parcel Index Number(s) (PIN): 0726861425
0726850785
B. REQUESTOR INFORMATION
Name: Gregory W. Price of Froehling & Robertson, Inc.
Mailing Address: 310 Hubert street, Raleigh, NC 27603
Telephone Number: 919-719-1961
Electronic Mail Address l: [e-mail]
Select one:
❑ I am the current property owner.
❑✓ i am an Authorized Agent or Environmental Consultant
❑ Interested Buyer or Under Contract to Purchase
❑ Other, please explain.
C. PROPERTY OWNER INFORMATION
Name: Wake County Board of Education
Mailing Address: ATrN: Facilities Design & Construction, WCPSS, Brian Conklin, Senior Director
Telephone Number:
Electronic Mail Address
1551 Rock Quarry Road, Raleigh, NC 27610-4145
919-588-3564
[e-mail]
❑✓ Proof of Ownership Attached (e.g. a copy of Deed, County GIS/Parcel/Tax Record data)
1 If available
2 Must attach completed Agent Authorization Form
3 If available
Version: December 2013 Page 3

Jurisdictional Determination Request
D. PROPERTY OWNER CERTIFICATION°
I, the undersigned, a duly authorized owner of record of the property/properties identified herein,
do authorize representatives of the Wilmington District, U.S. Army Corps of Engineers (Corps)
to enter upon the property herein described for the purpose of conducting on-site investigations
and issuing a determination associated with Waters of the U.S. subject to Federal jurisdiction
under Section 404 of the Clean Water Act and/or Section 10 of the Rivers and Harbors Act of
1899.
A Cr✓Cr��l acci e�t�c�—t�t� � g l
Property Ownet (please print) Date
M.J. Desorrrteaux, Jr.
Property vvner SAsst Silpeaniende
ignature WCPSS, for and on behafl of the
Wake County Board of Education,
E. JURISDICTIONAL DETERMINATION TYPE pursuant to duly delegated authority.
Select One:
0 I am requesting that the Corps provide a preliminary JD for the property identified herein.
This request does include a delineation.
ElI am requesting that the Corps provide a preliminary JD for the property identified herein.
This request does NOT include a delineation.
DI am requesting that the Corps investigate the property/project area for the presence or
absence of WoUS5 and provide an approved JD for the property identified herein. This
request does NOT include a request for a verified delineation.
ElI am requesting that the Corps delineate the boundaries of all WoUS on a property/project
area and provide an approved JD (this may or may not include a survey plat).
❑ I am requesting that the Corps evaluate and approve a delineation of WoUS (conducted
by others) on a property/project area and provide an approved JD (may or may not
include a survey plat).
° For NCDOT requests following the current NCDOT/USACE protocols, skip to Part E
5 Waters of the United States
Version: December 2013 Page 4

F.
0
Z
II
G.
Jurisdictional Determination Request
ALL REQUESTS
Map of Property or Project Area (attached). This Map must clearly depict the boundaries
of the area of evaluation.
Size of Property or Project Area -40
acres
I verify that the property (or project) boundaries have recently been surveyed and marked
by a licensed land surveyor OR are otherwise clearly marked or distinguishable.
JD REQUESTS FROM CONSULTANTS OR AGENCIES
(1) Preliminary JD Requests:
❑✓ Completed and signed Preliminary Jurisdictional Determination Form 6.
❑✓ Project Coordinates: 35.8559 Latitude -8.9048 Longitude
Maps (no larger than l lx17) with Project Boundary Overlay:
0 Large and small scale maps that depict, at minimum: streets, intersections, towns
0 Aerial Photography of the project area
0 USGS Topographic Map
❑✓ Soil Survey Map
W1Other Maps, as appropriate (e.g. National Wetland Inventory Map, Proposed Site
Plan, previous delineation maps, LIDAR maps, FEMA floodplain maps)
6 See Appendix A of this Form. From Regulatory Guidance Letter No. 08-02, dated June 26, 2008
Version: December 2013 Page 5

Jurisdictional Determination Request
Delineation Information (when applicable):
Wetlands:
❑✓ Wetland Data Sheets$
Tributaries:
❑ USACE Assessment Forms
❑✓ Upland Data Sheets ❑✓ Other Assessment Forms
(when appropriate)
❑ Landscape Photos, if taken
❑✓ Field Sketch overlain on legible Map that includes:
■ All aquatic resources (for sites with multiple resources, label and identify)
■ Locations of wetland data points and/or tributary assessment reaches
• Locations of photo stations
• Approximate acreage/linear footage of aquatic resources
(2) Approved JDs including Verification of a Delineation:
❑ Project Coordinates:
Latitude
Longitude
Maps (no larger than 11x17) with Project Boundary Overlay:
❑ Large and small scale maps that depict, at minimum: streets, intersections, towns
❑ Aerial Photography of the project area
❑ USGS Topographic Map
❑ Soil Survey Map
❑ Other Maps, as appropriate (e.g. National Wetland Inventory Map, Proposed Site Plan,
previous delineation maps)
1987 Manual Regional Supplements and Data forms can be found at:
http://www.usace.army.mil/Missions/CivilWorks/RegulatoryProgramandPermits/reg suoo aspx
Wetland and Stream Assessment Methodologies can be found at:
http://Portal ncdenrorg/c/document library/get file7uuid=76f3c58b-dab8-4960-ba43-45b7faf06f4c&grouold=38364 and,
http://www.saw.usace.army.mil/Portals/59/docs/regulatory/publicnotices/2013/NCSAM Draft User Manual 130318 odf
a Delineation information must include, at minimum, one wetland data sheet for each wetland/community type.
Version: December 2013 Page 6

WCPSS M-16 Site
PIN:0726861425
PIN Ext: 000
Real Estate ID: 0079790
Map Name: 0726 02
Owner: WAKE CNTY BOARD EDUCATION
Mail Address 1: ATTN: BETTY L PARKER
Mail Address 2: 1551 ROCK QUARRY RD
Mail Address 3: RALEIGH NC 27610-4145
Deed Book: 012957
Deed Page: 01206
Deed Date: 02/19/2008
Deed Acres: 38.44
Building Value: $28,939
Land Value: $2,900,145
Total Value: $2,929,084
Billing Class: Exempt
Description: PRCL A BNDY SRVY M-16
MIDDLE SCHOOL SITE BM2008 -00371
Heat Area: 1408
Site Address: 130 WINDING PINE TRL
City:
Township: WHITE OAK
Year Built: 1920
Sale Price: $31,000
Sale Date: 01/01/1972
Use Type: SINGLFAM
Design Style: Conventional
Land Class: ACRE HS
Old Parcel Number: 368-00000-0006
N
0 220 440 880 ft
1 inch = 400 feet
Disclaimer
Maps makes every effort to produce and publish
the most current and accurate information possible.
However, the maps are produced for information purposes,
and are NOT surveys. No warranties, expressed or implied
,are provided for the data therein, its use,or its interpretation.
n
I
i
M-16
M-16
Middle
Middle
School
School
Site
Site
M-16
M 46i
Middle
Middle
School
Schoolc�
Site
Site '•
Winclin�
_
O�
rl
WCPSS M-16 Site
PIN:0726861425
PIN Ext: 000
Real Estate ID: 0079790
Map Name: 0726 02
Owner: WAKE CNTY BOARD EDUCATION
Mail Address 1: ATTN: BETTY L PARKER
Mail Address 2: 1551 ROCK QUARRY RD
Mail Address 3: RALEIGH NC 27610-4145
Deed Book: 012957
Deed Page: 01206
Deed Date: 02/19/2008
Deed Acres: 38.44
Building Value: $28,939
Land Value: $2,900,145
Total Value: $2,929,084
Billing Class: Exempt
Description: PRCL A BNDY SRVY M-16
MIDDLE SCHOOL SITE BM2008 -00371
Heat Area: 1408
Site Address: 130 WINDING PINE TRL
City:
Township: WHITE OAK
Year Built: 1920
Sale Price: $31,000
Sale Date: 01/01/1972
Use Type: SINGLFAM
Design Style: Conventional
Land Class: ACRE HS
Old Parcel Number: 368-00000-0006
N
0 220 440 880 ft
1 inch = 400 feet
Disclaimer
Maps makes every effort to produce and publish
the most current and accurate information possible.
However, the maps are produced for information purposes,
and are NOT surveys. No warranties, expressed or implied
,are provided for the data therein, its use,or its interpretation.

M-16
M-16 Middle
Middle School
SGIIOOI Site
Site
t
Winding
WCPSS M-16 Site
PIN:0726850785
PIN Ext: 000
Real Estate ID: 0079791
Map Name: 0726 02
Owner: WAKE CNTY BOARD EDUCATION
Mail Address 1: ATTN: BETTY L PARKER
Mail Address 2: 1551 ROCK QUARRY RD
Mail Address 3: RALEIGH NC 27610-4145
Deed Book: 012957
Deed Page: 01206
Deed Date: 02/19/2008
Deed Acres: 2.77
Building Value: $47,767
Land Value: $218,520
Total Value: $266,287
Billing Class: Exempt
Description: PRCL B BNDY SRVY M-16
MIDDLE SCHOOL SITE BM2008 -00371
Heat Area: 1566
Site Address: 120 WINDING PINE TRL
City:
Township: WHITE OAK
Year Built: 1965
Sale Price: $0
Sale Date:
Use Type: SINGLFAM
Design Style: Conventional
Land Class: RES 10 AC
Old Parcel Number: 368-00000-0012
N
0 55 110 220 ft
1 inch = 100 feet
Disclaimer
Maps makes every effort to produce and publish
the most current and accurate information possible.
However, the maps are produced for information purposes,
and are NOTsurveys. No warranties, expressed or implied
,are provided for the data therein, its use,or its interpretation.

ATTACHMENT A
PRELIMINARY JURISDICTIONAL DETERMINATION FORM
BACKGROUND INFORMATION
A. REPORT COMPLETION DATE FOR PRELIMINARY JURISDICTIONAL
DETERMINATION (JD):
B. NAME AND ADDRESS OF PERSON REQUESTING PRELIMINARY JD:
Greg Price - Natural Resources Specialist for Froehling & Robertson, Inc.
310 Hubert Street, Raleigh, NC 27603
C. DISTRICT OFFICE, FILE NAME, AND NUMBER:
D. PROJECT LOCATION(S) AND BACKGROUND INFORMATION:
F&R Project 66T-0289: WCPSS M-16 Site, 120 and 130 Winding Pine Trail, Cary, Wake County, NC
(USE THE ATTACHED TABLE TO DOCUMENT MULTIPLE WATERBODIES AT DIFFERENT
SITES)
State: NC County/parish/borough: Wake
City: Cary
Center coordinates of site (lat/long in degree decimal format):
Lat. 35.85555 ON; Long. 78.90501
Universal Transverse Mercator: Select
Name of nearest waterbody: UT to Kit creek
OW.
Identify (estimate) amount of waters in the review area:
Non -wetland waters:
273 linear feet: width (ft) and/or 0.82 acres.
Cowardin Class: Riverine for streams, PUBHh for pond (0.82 acres)
Stream Flow: Perennial (273 linear feet)
Wetlands: 1.03 acres.
Cowardin Class: PF01 (0.55 ac.), PEM (0.46 ac), PUBHh (0.02, Wetland 40,000)
Name of any water bodies on the site that have been identified as Section 10
waters:
Tidal:
Non -Tidal:
1

E. REVIEW PERFORMED FOR SITE EVALUATION (CHECK ALL
APPLY):
❑ Office (Desk) Determination. Date:
❑ Field Determination. Date(s):
THAT
SUPPORTING DATA. Data reviewed for preliminary JD
(check all that apply - checked items should be included in case file and,
w
M✓h a checked and requested, appropriately reference sources below):
Maps, plans, plots or plat submitted by or on behalf of the
applicant/consultant:
❑✓ Data sheets prepared/submitted by or on behalf of the
app ' nt/consultant.
Office concurs with data sheets/delineation report.
Office does not concur with data sheets/delineation report.
❑ Data sheets prepared by the Corps:
❑ Corps navigable waters' study:
❑ U.S. Geological Survey Hydrologic Atlas:
❑ USGS NHD data
❑ USGS 8 and 12 digit HUC maps
IZIU.S. Geological Survey map(s). Cite scale & quad name: Green Level, NC 24K
❑� USDA Natural Resources Conservation Service Soil Survey.
Citation: web Soil Map
✓❑ National wetlands inventory map(s). Cite name: USFWS NWI Mapper
❑ State/Local wetland inventory map(s):
❑ FEMA/FIRM maps:
❑ 100 -year Floodplain Elevation is:
(National Geodectic Vertical Datum of 1929)
❑ Photographs:'� Aerial (Name & Date): 2014 SID wake County
Other (Name & Date):
❑ Previous determination(s). File no. and date of response letter:
❑ Other information (please specify):
2
or

1. The Corps of Engineers believes that there may be jurisdictional waters of the
United States on the subject site, and the permit applicant or other affected party
who requested this preliminary JD is hereby advised of his or her option to
request and obtain an approved jurisdictional determination (JD) for that site.
Nevertheless, the permit applicant or other person who requested this
preliminary JD has declined to exercise the option to obtain an approved JD in
this instance and at this time.
2. In any circumstance where a permit applicant obtains an individual permit, or
a Nationwide General Permit (NWP) or other general permit verification requiring
"pre -construction notification" (PCN), or requests verification for a non -reporting
NWP or other general permit, and the permit applicant has not requested an
approved JD for the activity, the permit applicant is hereby made aware of the
following: (1) the permit applicant has elected to seek a permit authorization
based on a preliminary JD, which does not make an official determination of
jurisdictional waters; (2) that the applicant has the option to request an approved
JD before accepting the terms and conditions of the permit authorization, and
that basing a permit authorization on an approved JD could possibly result in less
compensatory mitigation being required or different special conditions; (3) that
the applicant has the right to request an individual permit rather than accepting
the terms and conditions of the NWP or other general permit authorization; (4)
that the applicant can accept a permit authorization and thereby agree to comply
with all the terms and conditions of that permit, including whatever mitigation
requirements the Corps has determined to be necessary; (5) that undertaking
any activity in reliance upon the subject permit authorization without requesting
an approved JD constitutes the applicant's acceptance of the use of the
preliminary JD, but that either form of JD will be processed as soon as is
practicable; (6) accepting a permit authorization (e.g., signing a proffered
individual permit) or undertaking any activity in reliance on any form of Corps
permit authorization based on a preliminary JD constitutes agreement that all
wetlands and other water bodies on the site affected in any way by that activity
are jurisdictional waters of the United States, and precludes any challenge to
such jurisdiction in any administrative or judicial compliance or enforcement
action, or in any administrative appeal or in any Federal court; and (7) whether
the applicant elects to use either an approved JD or a preliminary JD, that JD
will be processed as soon as is practicable. Further, an approved JD, a proffered
individual permit (and all terms and conditions contained therein), or individual
permit denial can be administratively appealed pursuant to 33 C.F.R. Part 331,
and that in any administrative appeal, jurisdictional issues can be raised (see 33
C.F.R. 331.5(a)(2)). If, during that administrative appeal, it becomes necessary
to make an official determination whether CWA jurisdiction exists over a site, or
to provide an official delineation of jurisdictional waters on the site, the Corps will
provide an approved JD to accomplish that result, as soon as is practicable.
3

This preliminary JD finds that there "maybe" waters of the United States on the
subject project site, and identifies all aquatic features on the site that could be
affected by the proposed activity, based on the following information:
IMPORTANT NOTE: The information recorded on this form has not
Signature and date of
Regulatory Project Manager
(REQUIRED)
�VI'O$L 3 ��
Signal r. and date of
person requesting preliminary JD
(REQUIRED, unless obtaining
the signature is impracticable)

Estimated Amount
Site
Number
Latitude
Longitude
Cowardin
Class
of Aquatic Resource
in the Review Area
Class of Aquatic
Resource
(lin. ft or ac.)
Stream
35.85777
-78.90664
Riverine -
56 linear feet
Non -Section 10
1,000
Perennial
Non -wetland
Stream
35.85714
-78.90127
Riverine -
217 linear feet
Non -Section 10
2,000
Perennial
Non -wetland
Wetland
35.85370
-78.90362
PEM1
0.39 acre
Non -Section 10
10,000
Wetland
Wetland
35.85448
-78.90416
PFO1
0.17 acre
Non -Section 10
20,000
Wetland
Wetland
35.85429
-78.90382
PFO1
0.03 acre
Non -Section 10
30,000
Wetland
Wetland
35.85668
-78.90428
PUBHh?
0.02 acre
Non -Section 10
40,000
Wetland
Wetland
35.85332
-78.90374
PFO1
0.02 acre
Non -Section 10
50,000
Wetland
Wetland
35.85669
-78.90682
PFO1
0.03 acre
Non -Section 10
60,000
Wetland
Wetland
35.85732
-78.90148
PFO1
0.13 acre
Non -Section 10
70,000
Wetland
Wetland
35.85749
-78.90142
PFO1
0.05 acre
Non -Section 10
80,000
Wetland
Wetland
35.85656
-78.90412
PFO1
0.09 acre
Non -Section 10
90,000
Wetland
Wetland
35.85710
-78.89942
PFO1
0.03 acre
Non -Section 10
100,000
Wetland
Wetland
38.85751
-78.90062
PEM
0.07 acre
Non -Section 10
110,000
Wetland
Pond
35.85654
-78.90364
PUBHh
0.82 acre
Non -Section 10
Non -wetland

SINCE FROEHLING & ROBERTSON, INC.
Engineering Stability Since 1881
310 Hubert Street
Raleigh, North Carolina 27603-2302 1 USA
on@, T 919.828.34411 F 919.828-5751
1 8 8 1 NC Engineering License # F-0266
February 25, 2016
Mr. Jason Phelan, Assoc. AIA, LEED Green Assoc.
Wake County Public School System
Facilities Design & Construction
1429 Rock Quarry Road, Suite 116
Raleigh, NC 27610
Re: Stream and Wetland Delineation
M-16 NW Cary Middle School
Cary, North Carolina
F&R Project No. 66T-0289
Property Description:
Size (acres): 40 acres Nearest Town: Cary, NC
Nearest Waterway: Kit Creek River Basin: Cape Fear
USGS HUC: 03030002 Coordinates: Lat 35.8559/ Long -78.9048
Location: Along the north side of Winding Pine Trail, fust west of the intersection
with Seahorse Court in Cary, Wake County, NC
Mr. Phelan:
Froehling & Robertson, Inc., (F&R) presents herein the results of the stream and wetland delineation
conducted at the above -referenced property located along the north side of Winding Pine Trail, just
west of the intersection with Seahorse Court in Cary, North Carolina (see Attachments for site location
map). The review area contains approximately 40 acres of mostly forested land.
EXECUTIVE SUMMARY
The following is a summary of our findings and is not intended to replace more detailed information
contained elsewhere in this report. Based on F&R's Field observations and information review, eleven
potentially jurisdictional wetlands, two potentially jurisdictional streams (both perennial), and one
potentially jurisdictional pond were identified and delineated during our assessment. A graphic
depiction of the identified feature locations is included in the attachments.
SCOPE OF SERVICES
This report describes the activities and findings associated with the completion of a wetland assessment
for the above -referenced property. F&R reviewed applicable information sources to identify areas on
the project site that could be considered "Waters of the US" (i.e., wetland, stream, and open water
features) and subject to jurisdiction by Environmental Protection Agency (EPA), United States Army
Corps of Engineers (USACE) and/or North Carolina Division of Water Resources (NCDWR). On-site
identification of wetlands was performed in general accordance with the 1987 Corps of Engineers
Wetlands Delineation Manual and subsequent USACE clarification memorandums. On-site identification
HQ: 3015 DUMBARTON ROAD RICHMOND, VA 23228 USA T804.264.2701 F 804.264.1202 www.fandr.com
VIRGINIA • NORTH CAROLINA • SOUTH CAROLINA • MARYLAND • DISTRICT OF COLUMBIA
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of streams was performed in general accordance with the NCDWR Identification Methods of the Origins
of Intermittent and Perennial Streams.
SITE CONDITIONS
INFORMATION REVIEW
F&R reviewed the following resources prior to visiting the project site: United States Geological Survey
(USGS) 1:24,000 -scale topographic map, Natural Resource Conservation Service (NRCS) Soil Survey,
National Wetland Inventory (NWI), and aerial photographs. Based on F&R's information review, four
field -identified jurisdictional features (Streams 1,000 and 2,000, Pond, and Wetland 10,000 [shown as
pond]) were depicted on the USGS Topographic map and NRCS Soil Survey map. The NRCS Soil Survey
map also depicts Wetland 20,000 as a pond. The NWI map depicts Wetlands 10,000 (shown as pond),
70,000, and 80,000, and the pond. The remaining field -identified jurisdictional features were not
depicted on the maps reviewed for the project study area. Please see Figures 1-5 in Attachments for
copies of relevant portions of the above -referenced maps.
ON-SITE OBSERVATIONS
The review area currently consists of mostly undeveloped wooded land. Eleven potentially jurisdictional
wetlands (Wetlands 10,000, 20,000, 30,000, 40,000, 50,000, 60,000, 70,000, 80,000, 90,000, 100,000,
and 110,000), two potentially jurisdictional streams (Streams 1,000 and 2,000), and one pond were
identified and delineated during our assessment.
Based on F&R's on-site observations, the above -listed features are each likely to be considered
jurisdictional "Waters of the US" by the USACE and/or NCDWR; however, on-site determinations by the
USACE and NCDWR would be required in order to confirm or deny jurisdiction by these two regulatory
agencies. The approximate locations of the mapped surface features are shown on the Site Observation
Map in the Attachments and are described as follows:
1. Stream 1,000 — a perennial stream located on the northwestern corner of the review area
flowing northeast to southwest; an unnamed tributary (UT) of Kit Creek.
2. Stream 2,000 — a perennial stream located on the eastern adjacent parcel flowing from north to
south; an UT of Kit Creek.
3. Wetland 10,000 — formerly a pond located on the southeastern portion of the review area and
eventually drains into Wetland 50,000 via pipe.
4. Wetland 20,000 — formerly a pond located on the southeastern portion of the review area and
eventually drains into Wetland 10,000 via pipe.
5. Wetland 30,000 — located on the southeastern portion of the review area, east of Wetland
20,000. A hydrological connection was not observed; however, it is probably hydrologically
connected to Wetland 20,000 based on its close vicinity.
6. Wetland 40,000 — located on the northeastern portion of the review area, west of Wetland
90,000 and adjacent pond. A hydrological connection was not observed; however, it is probably
hydrologically connected to Wetland 90,000 based on its close vicinity.
7. Wetland 50,000 — located on the southeastern portion of the review area, south of Wetland
10,000. It eventually receives drainage from Wetland 10,000 via pipe.
Wake County Public School System 2 February 25, 2016
M-16 Property Site F&R Project No. 66T-0289

8. Wetland 60,000 —located on the northwestern portion of the review area and eventually drains
into an ephemeral channel to Stream 1,000 west of the review area.
9. Wetland 70,000 — located within the easement on the eastern adjacent parcel of the review
area, abutting Stream 2,000 along the west streambank.
10. Wetland 80,000 — located within the easement on the eastern adjacent parcel of the review
area, north of Wetland 70,000 and adjacent to Stream 2,000.
11. Wetland 90,000 — located on the northeastern portion of the review area, abutting the western
side of the pond.
12. Wetland 100,000 — located within the easement on the eastern adjacent parcel of the review
area, east of Wetland 110,000.
13. Wetland 110,000 — located within the easement on the eastern adjacent parcel of the review
area, east of Wetlands 70,000 and 80,000. It is receiving drainage from the stormwater pond
located north of Wetland 110,000.
14. Pond — located on the northeastern portion of the review area, adjacent to Wetland 90,000. The
pond eventually drains into UT of Kit Creek, a jurisdictional stream located outside of the review
area.
CONCLUSION
Based on F&R's information review and on-site observations, eleven wetland areas, two potentially
jurisdictional streams, and a pond were identified during our assessment. It is F&R's opinion that the
portions of these feature contained within the review area are likely to be considered jurisdictional by
the USACE and/or NCDWR based on F&R's on-site observations. Based on this assumption, the features
would be subject to USACE or NCDWR regulations in accordance with the Clean Water Act (CWA);
however, on-site determinations by the USACE and NCDWR would be required in order to confirm or
deny jurisdiction by these two regulatory agencies.
Please note that the attached map of surface features prepared by F&R is meant for use as a reference
document only. This map is not designed to satisfy any requirement for a survey plat by a licensed
surveyor nor is it intended to be used for construction purposes or relied upon for the jurisdictional
limits of the mapped surface features.
GENERAL GUIDANCE
F&R recommends that plans for development of the subject property consider the USACE and NCDWR
procedures for assessing impacts to jurisdictional wetlands and/or streams (i.e., avoid, minimize, and
mitigate) to optimize permitting strategies.
If proposed development on the project site does not result in impacts to wetland areas, the areas
immediately adjacent to wetland boundaries, or the identified Waters of the US, a USACE permit will not
be necessary. Typical activities requiring USACE permitting include, but are not limited to, depositing of
fill or dredged material in wetlands; site development fill; construction of revetments, groins,
breakwaters, levees, dams, dikes, and weirs; and placement of riprap and road fill.
If impacts to these areas are anticipated, F&R recommends that site plans be developed that optimize
permitting strategies to comply with the USACE, NCDWR, and local municipality procedures for
Wake County Public School System 3 February 25, 2016
M-16 Property Site F&R Project No. 66T-0289

assessing impacts to jurisdictional wetlands and/or "Waters of the US" (i.e., avoid, minimize, and
mitigate).
If future impacts to jurisdictional wetlands and/or streams are anticipated, the appropriate permit
applications for regulatory review must be completed prior to any initiation of activities that may
require permitting.
F&R can provide alternative design measures and make the written request based upon extensive
experience and professional relationships with the USACE and NCDWR throughout North Carolina in the
event that impacts are unavoidable and written authorization needs to be requested.
LIMITATIONS
This report has been prepared for the exclusive use of Wake County Public School System (Client) and
others so designated by the Client for this specific project. These services have been provided in
accordance with generally accepted environmental practices. No other warranty, expressed or implied,
is made. Our observations were based upon conditions readily visible at the site at the time of our visit.
If additional information becomes available which may effect our conclusions and recommendations, we
request the opportunity to review the information, and reserve the right to modify our report, as
warranted. Please do not hesitate to contact us if you have any questions or comments.
Respectfully Submitted,
FROEHLING & ROBERTSON, INC.
Gregory W. Price, PWS
Natural Resources Specialist
Attachments:
Figure 1: Site Vicinity Map
Figure 2: USGS Topo Map
Figure 3: Site Observation Map
Figure 4: Soil Survey Map
Figure 5: National Wetland Inventory Map
USACE Wetland Data Forms
Photos
Elias N. Ruhl
Environmental Group Manager
Wake County Public School System 4 February 25, 2016
M-16 Property Site F&R Project No. 66T-0289

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FROEHLING & ROBERTSON, INC.
ENGINEERING • ENVIRONMENTAL* GEOTECHNICAL
310 Hubert Street
Raleigh, North Carolina 27603-2302 I USA
T 919.828.34411 F 919.828.5751
Client: Wake County Public School System
Project: M-16 NW Cary Middle School
Location: Wake County, North Carolina
F&R Project No: 66T-0289
Source: Google Maps
Date: February 2016 Scale Not Known Figure k1

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FROEHLING & ROBERTSON, INC.
ENGINEERING • ENVIRONMENTAL • GEOTECHNICAL
310 Hubert Street
Raleigh, North Carolina 27603-2302 1 USA
T 919.828.34411 F 919.828.5751
Client: Wake Count Public School System
Project: M-16 NW CarV Middle School
Location: Wake County, North Carolina
F&R Project No: 66T-0289
Source: "Green Level, NC" dated 1993
Date: February 2016 Scale Not Shown Figure #2

Approximate location outside of project
study area ' r#
Extends further north
Stream 1,000 �f
Wetland 80,000 5r.
Wetland 110,000
Wetland 70,000
Stream 2,000
Wetland 60,000 Wetland 100,000
Approximate location
Wetland 40,000 outside of project study area
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FROEHLING & ROBERTSON, INC.
ENGINEERING • ENVIRONMENTAL • GEOTECHNICAL
310 Hubert Street
Raleigh, North Carolina 27603-2302 1 USA
T 919.828.3441 1 F 919.828.5751
Client: Wake County Public School System
Project: M-16 NW Cary Middle School
Location: Wake County, North Carolina
F&R Project No: 66T-0289
Source: Wake County Soil Survey (1970)
Date: February 2016 Scale Not Shown Figure #4

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NATIONAL WETLAND INVENTORY MAP North
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FROEHLING & ROBERTSON, INC.
ENGINEERING• ENVIRONMENTAL• GEOTECHNICAL
310 Hubert Street
Raleigh, North Carolina 27603-2302 1 USA
T 919.828.34411 F 919.828.5751
Client: Wake County Public School System
Project: M-16 NW CarV Middle School
Location: Wake County, North Carolina
F&R Project No: 66T-0289
Source: USFWS NWI Mapper
Date: February 2016 Scale As Shown Figure #5

Wetland Delineation
WCPSS M-16 Site
Cary, North Carolina
Photo 1— View of Stream 1,000 looking east (downstream)
71
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Ar
Photo 2 — View of Stream 2,000 looking south (downstream)

Wetland Delineation
WCPSS M-16 Site
Cary, North Carolina
Photo 3 — View of Wetland 10,000 looking north
7A 75;qv-,t;�m IIV� -41"
Photo 4 — View of Wetland 20,000 looking northwest

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Wetland Delineation
WCPSS M-16 Site
Cary, North Carolina
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Photo 7 —View of Wetland 50,000 looking south
Photo 8 — View of Wetland 60,000 looking south

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Wetland Delineation
WCPSS M-16 Site
Cary, North Carolina
Photo 11— View of Pond looking west
Photo 12 — View of Wetland 90,000 looking north

Wetland Delineation
WCPSS M-16 Site
Cary, North Carolina
Photo 13 — View of Wetland 100,000 looking south
Photo 14 — View of Wetland 110,000 looking north

WETLAND DETERMINATION DATA FORM — Eastern Mountains and Piedmont
Project/Site: WCPSS M-16 City/County: Wake Sampling Date: Feb 9, 2016
Applicant/Owner: Wake County Public School System State: NC Sampling Point: 10,000 Up
Investigator(s): Greg Price, Paul Hughes Section, Township, Range: Cary
Landform (hillslope, terrace, etc.) terrace Local relief (concave, convex, none): none
Slope (%): 0 Lat: 35.854289 Long: -78.903930 Datum: NAD83
Soil Map Unit Name: WsC2 -White Store sandy loam, 6 to 10% slopes, moderately eroded NWI Classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks.)
Are Vegetation Soil or Hydrology significantly disturbed? Are "Normal Circumstances" present? Yes X
Are Vegetation Soil or Hydrology naturally problematic? (If needed, explain any answers in Remarks.)
No
JUMIVIAKY UI' PIIVUINkib — Attacn site map snowing sa piing point locations, transects, Important TeatureS, etc.
Hydrophytic Vegetation Present? Yes X No
Is the Sampled Area
Hydric Soil Present? Yes No X within a Wetland? Yes No X
Wetland Hydrology Present? Yes No X
Remarks:
Upland data point for Wetlands 10,000, 20,000, and 30,000
HYDROLOGY
Wetland Hydrology Indicators:
Secondary Indicators (minimum of two required)
Primary Indicators (minimum of one is required; check all that apply)
Surface Soil Cracks (B6)
Surface Water (Al)
_
True Aquatic Plants (1314)
Sparsely Vegetated Concave Surface (B8)
High Water Table (A2)
Hydrogen Sulfide Odor (Cl)
Drainage Patterns (B10)
Saturation (A3)
Oxidized Rhizospheres on Living Roots (C3)
Moss Trim Lines (B16)
Water Marks (B1)
Presence of Reduced Iron (C4)
Dry -Season Water Table (C2)
_ Sediment Deposits (B2)
_ Recent Iron Reduction in Tilled Soils (C6) _
Crayfish Burrows (C8)
Drift Deposits (133)
Thin Muck Surface (C7)
Saturation Visible on Aerial Imagery (C9)
Algal Mat or Crust (B4)
Other (Explain in Remarks)
Stunted or Stressed Plants (D1)
Iron Deposits (B5)
Geomorphic Position (D2)
Inundation Visible on Aerial Imagery (137)
Shallow Aquitard (D3)
_ Water -Stained Leaves (B9)_
Microtopographic Relief (D4)
Aquatic Fauna (B13)
X
FAC -Neutral Test (D5)
Field Observations:
Surface Water Present? Yes No X
Depth (inches):
Water Table Present? Yes No X
Depth (inches):
Wetland Hydrology
Present? Yes No X
Saturation Present? Yes No X
Depth (inches):
_
(includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
Only FAC -Neutral Test met for hydrology indicator. Overall Hydrology criteria not met.

VEGETATION (Four Strata) - Use scientific names of plants.
Sampling Point 10,000Up
Remarks: (Include photo numbers here or on a separate sheet.)
Hydrophytic vegetation criteria met.
Dominance Test worksheet:
Absolute Dominant Indicator
Tree Stratum (Plot size:
) % Cover Species? Status
Number of Dominant Species
1. Pinus taeda (Pine,loblolly)
60 Y FAC
That Are OBL, FACW, or FAC: 3 (A)
Total Number of Dominant
Species Across All Strata: 3 (B)
2.
3.
4
5.
6
Percent of Dominant Species
That Are OBL, FACW, or FAC: 100 (A/B)
7.
8.
Prevalence Index worksheet:
Total % Cover of: Multiply by:
60 = Total Cover
OBL species x 1 =
Sapling/Shrub Stratum (Plot size:
)
FACW species X 2 =
1. Quercus phellos (Oak,willow)
20 Y FACW
FAC species X 3 =
FACU species X4=
2. Liquidambar styraciflua (Gum,sweet) 10 Y FAC
3.
UPL species X 5 =
Column Totals: (A) (B)
Prevalence Index = B/A =
4
5.
6.
7.
8.
Hydrophytic Vegetation Indicators:
9.
1 - Rapid Test for Hydrophytic Vegetation
10.
X 2 - Dominance Test is > 50%
30 = Total Cover
3 - Prevalence Test is <_ 3.0'
Herb Stratum (Plot size:
)
4 - Morphological Adaptations' (Provide supporting
data in Remarks or on a separate sheet)
1.
Problematic Hydrophytic Vegetation' (Explain)
'Indicators of hydric soil and wetland hydrology must
2
3.
4
be present, unless disturbed or problematic.
5.
Definitions of Vegetation Strata:
6.
7.
Tree -Woody plants, excluding vines, 3 in. (7.6 cm)
or more in diameter at breast height (DBH),
8.
g.
10.
regardless of height.
11.
Sapling/Shrub - Woody plants, excluding vines, less
12.
than 3 in. DBH and greater than 3.28 ft (1 m) tall.
0 = Total Cover
Herb - All herbaceous (non -woody) plants, regardless
Woody Vine Stratum (Plot size:
)
of size, and woody plants less than 3.28 ft tall.
1
Woody vine - All woody vines greater than 3.28 ft in
height.
2.
3.
4.
Hydrophytic
5
Vegetation
Present? Yes X No
6.
0 = Total Cover
Remarks: (Include photo numbers here or on a separate sheet.)
Hydrophytic vegetation criteria met.

SOIL
Sampling Point: 10,000 Up
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth Matrix
Redox Features
(inches) Color (moist) %
Color (moist) % Tye Loc2
Texture Remarks
0-3 10YR6/6 100
N/A N/A
Loam
3-8 7.5YR5/8 50
10YR6/6 50 C M
Clay Loam
8-12+ 2.5YR4/8 80
10YR5/4 20 C M
Clay
'Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators:
Indicators for Problematic Hydric Soils':
Histosol (Al)
Dark Surface (S7)
2 cm Muck (A10) (MLRA 147)
Histic Epipedon (A2)
Polyvalue Below Surface (S8) (MLRA 147, 148) Coast Prairie Redox (A16)
Black Histic (A3)
Thin Dark Suface (S9) (MLRA 147, 148)
(MLRA 147, 148)
Hydrogen Sulfide (A4)
Loamy Gleyed Matrix (F2)
Piedmont Floodplain Soils (F19)
Stratified Layers (A5)
Depleted Matrix (F3)
(MLRA 136, 147)
2 cm Muck (A10) (LRR N)
Redox Dark Surface (F6)
Red Parent Material (TF2)
Depleted Below Dark Surface (A11)
Depleted Dark Surface (F7)
Very Shallow Dark Surface (TF1 2)
Thick Dark Surface (Al2)
Redox Depressions (F8)
Other (Explain in Remarks)
Sandy Mucky Mineral (S1) (LRR N,
Iron Manganese Masses (F12) (LRR N,
MLRA 147, 148)
MLRA 136)
Sandy Gleyed Matrix (s4)
Sandy Redox (S5)
Umbric Surface (F13) (MLRA 136, 122)
31ndicators of Hydrophytic vegetation and
Piedmont Floodplain Soils (F19) (MLRA 148) wetland hydrology must be present, unless
Stripped Matrix (S6)
disturbed or problematic.
Restrictive Layer (if observed):
Type:
Depth (inches):
Hydric Soil Present? Yes No X
Remarks:
No hydric soil indicators met.

WETLAND DETERMINATION DATA FORM — Eastern Mountains and Piedmont
Project/Site: WCPSS M-16 City/County: Wake Sampling Date: Feb 9, 2016
Applicant/Owner: Wake County Public School System State: NC Sampling Point: 10,000 Wet
Investigator(s): Greg Price, Paul Hughes Section, Township, Range: Cary
Landform (hillslope, terrace, etc.) depression Local relief (concave, convex, none): concave
Slope (%): 0-2 Lat: 35.853698 Long: -78.903617 Datum: NAD83
Soil Map Unit Name: WsC2 - White Store sandy loam, 6 to 10% slopes, moderately eroded NWI Classification: Mapped as PUBHh
Are climatic / hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks.)
Are Vegetation Soil or Hydrology significantly disturbed? Are "Normal Circumstances" present? Yes X No
Are Vegetation Soil or Hydrology naturally problematic? (If needed, explain any answers in Remarks.)
JUMIVIAKT UI' PIIVUINkib — ATtacn size map snoWlna sammina DOlnt locations. Transects. ImDortant Teatures. etc.
Hydrophytic Vegetation Present? Yes X No
Is the Sampled Area
Hydric Soil Present? Yes X No within a Wetland? Yes X No
Wetland Hydrology Present? Yes X No
Remarks:
Wetland 10,000 is in relic pond bed that is filling in. The deepest part is 2-3 feet. Mostly vegetated
HYDROLOGY
Wetland Hydrology Indicators:
Secondary Indicators (minimum of two required)
Primary Indicators (minimum of one is required; check all that apply) _
Surface Soil Cracks (B6)
Surface Water (Al)
X True Aquatic Plants (1314)
Sparsely Vegetated Concave Surface (B8)
X High Water Table (A2)
Hydrogen Sulfide Odor (Cl)
Drainage Patterns (B10)
X Saturation (A3)
Oxidized Rhizospheres on Living Roots (C3)
Moss Trim Lines (1316)
Water Marks (B1)
Presence of Reduced Iron (C4)
Dry -Season Water Table (C2)
_ Sediment Deposits (B2)
_ Recent Iron Reduction in Tilled Soils (C6) _
Crayfish Burrows (C8)
Drift Deposits (133)
Thin Muck Surface (C7)
Saturation Visible on Aerial Imagery (C9)
Algal Mat or Crust (134)
Other (Explain in Remarks)
Stunted or Stressed Plants (D1)
Iron Deposits (B5)
X
Geomorphic Position (D2)
Inundation Visible on Aerial Imagery (137)
Shallow Aquitard (D3)
X Water -Stained Leaves (B9)_
Microtopographic Relief (D4)
X Aquatic Fauna (B13)
X
FAC -Neutral Test (D5)
Field Observations:
Surface Water Present? Yes No X
Depth (inches):
Water Table Present? Yes X No
Depth (inches): 15
Wetland Hydrology
Present? Yes X No
Saturation Present? Yes X No
Depth (inches): 6
_
(includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring
well, aerial photos, previous inspections), if available:
Remarks:
Ponded near data point at approximately 0 to 2 inches
deep. Upland chorus frogs heard from wetland.

VEGETATION (Four Strata) - Use scientific names of plants.
Tree Stratum
1.
2.
3.
4.
5.
6.
7.
8.
Absolute Dominant Indicator
(Plot size: ) % Cover Species? Status
Sapling/Shrub Stratum (Plot size: )
1. Salix nigra (Willow,black)
2.
3.
4.
5.
6.
7.
8.
9.
10.
Herb Stratum (Plot size: )
1. Scirpus cyperinus (Wool -grass)
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
Woody Vine Stratum (Plot size: )
1.
2.
3.
4.
5.
6.
0 = Total Cover
40 Y OBL
40 = Total Cover
80 Y OBL
80 = Total Cover
0 = Total Cover
Remarks: (Include photo numbers here or on a separate sheet.)
NC WAM classification is Non -tidal Freshwater Marsh. Meets hydrophytic criteria.
Sampling Point 10,000 Wet
Dominance Test worksheet:
Number of Dominant Species
That Are OBL, FACW, or FAC: (A)
Total Number of Dominant
Species Across All Strata: (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: (A/B)
Prevalence Index = B/A =
ydrophytic Vegetation Indicators:
X 1 - Rapid Test for Hydrophytic Vegetation
_ 2 - Dominance Test is > 50%
_ 3 - Prevalence Test is <_ 3.0'
_4 - Morphological Adaptations' (Provide supporting
data in Remarks or on a separate sheet)
Problematic Hydrophytic Vegetation' (Explain)
'Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Definitions of Vegetation Strata:
Tree -Woody plants, excluding vines, 3 in. (7.6 cm)
or more in diameter at breast height (DBH),
regardless of height.
Sapling/Shrub - Woody plants, excluding vines, less
than 3 in. DBH and greater than 3.28 ft (1 m) tall.
Herb - All herbaceous (non -woody) plants, regardless
of size, and woody plants less than 3.28 ft tall.
Woody vine - All woody vines greater than 3.28 ft in
height.
Hydrophytic
Vegetation
Present? Yes X No
Prevalence Index worksheet:
Total % Cover of:
Multiply by:
OBL species
x 1 =
FACW species
X 2 =
FAC species
X 3 =
FACU species
X4=
UPL species
X 5 =
Column Totals:
(A) (B)
Prevalence Index = B/A =
ydrophytic Vegetation Indicators:
X 1 - Rapid Test for Hydrophytic Vegetation
_ 2 - Dominance Test is > 50%
_ 3 - Prevalence Test is <_ 3.0'
_4 - Morphological Adaptations' (Provide supporting
data in Remarks or on a separate sheet)
Problematic Hydrophytic Vegetation' (Explain)
'Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Definitions of Vegetation Strata:
Tree -Woody plants, excluding vines, 3 in. (7.6 cm)
or more in diameter at breast height (DBH),
regardless of height.
Sapling/Shrub - Woody plants, excluding vines, less
than 3 in. DBH and greater than 3.28 ft (1 m) tall.
Herb - All herbaceous (non -woody) plants, regardless
of size, and woody plants less than 3.28 ft tall.
Woody vine - All woody vines greater than 3.28 ft in
height.
Hydrophytic
Vegetation
Present? Yes X No

SOIL
Sampling Point: 10,000 Wet
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth Matrix
Redox Features
(inches) Color (moist) %
Color (moist) % Tye Loc2
Texture Remarks
0-2 10YR4/1 80
2.5YR4/8 20 C PL/M
Silty Clay
2-5 7.5YR5/1 70
2.5YR4/8 30 C M
Silty Clay
5-12+ Gley1 4/N 60
10YR5/8 40 C M
Silty Clay
'Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators:
Indicators for Problematic Hydric Soils':
Histosol (Al)
Dark Surface (S7)
2 cm Muck (A10) (MLRA 147)
Histic Epipedon (A2)
Polyvalue Below Surface (S8) (MLRA 147, 148) Coast Prairie Redox (A16)
Black Histic (A3)
Thin Dark Suface (S9) (MLRA 147, 148)
(MLRA 147, 148)
Hydrogen Sulfide (A4)
Loamy Gleyed Matrix (F2)
Piedmont Floodplain Soils (F19)
Stratified Layers (A5)
X Depleted Matrix (F3)
(MLRA 136, 147)
2 cm Muck (A10) (LRR N)
Redox Dark Surface (F6)
Red Parent Material (TF2)
Depleted Below Dark Surface (A11)
Depleted Dark Surface (F7)
Very Shallow Dark Surface (TF1 2)
Thick Dark Surface (Al2)
Redox Depressions (F8)
Other (Explain in Remarks)
Sandy Mucky Mineral (S1) (LRR N,
Iron Manganese Masses (F12) (LRR N,
MLRA 147, 148)
MLRA 136)
Sandy Gleyed Matrix (s4)
Sandy Redox (S5)
Umbric Surface (F13) (MLRA 136, 122)
31ndicators of Hydrophytic vegetation and
Piedmont Floodplain Soils (F19) (MLRA 148) wetland hydrology must be present, unless
Stripped Matrix (S6)
disturbed or problematic.
Restrictive Layer (if observed):
Type:
Depth (inches):
Hydric Soil Present? Yes X No
Remarks:
Hydric Soil criteria met.

WETLAND DETERMINATION DATA FORM — Eastern Mountains and Piedmont
Project/Site: WCPSS M-16 City/County: Wake Sampling Date: Feb 9, 2016
Applicant/Owner: Wake County Public School System State: NC Sampling Point: 20,000 Wet
Investigator(s): Greg Price, Paul Hughes Section, Township, Range: Cary
Landform (hillslope, terrace, etc.) depression Local relief (concave, convex, none): concave
Slope (%): 0-2 Lat: 35.854478 Long: -78.904155 Datum: NAD83
Soil Map Unit Name: WsC2 - White Store sandy loam, 6 to 10% slopes, moderately eroded NWI Classification: PF01A estimated (not mapped)
Are climatic / hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks.)
Are Vegetation Soil or Hydrology significantly disturbed? Are "Normal Circumstances" present? Yes X No
Are Vegetation Soil or Hydrology naturally problematic? (If needed, explain any answers in Remarks.)
JUMIVIAKT UI' PIIVUINkib — ATtacn size map snoWlna sammina DOlnt locations. Transects. ImDortant Teatures. etc.
Hydrophytic Vegetation Present? Yes X No
Is the Sampled Area
Hydric Soil Present? Yes X No within a Wetland? Yes X No
Wetland Hydrology Present? Yes X No
Remarks:
An old pond bed that has filled in and overgrown with hardwoods. Ponded areas up to 6 inches. The former pond is shown on Wake County Soil
Survey map.
HYDROLOGY
Wetland Hydrology Indicators:
Secondary Indicators (minimum of two required)
Primary Indicators (minimum of one is required; check all that apply)
Surface Soil Cracks (B6)
Surface Water (Al)
_
True Aquatic Plants (1314)
Sparsely Vegetated Concave Surface (B8)
High Water Table (A2)
Hydrogen Sulfide Odor (Cl) X
Drainage Patterns (B10)
Saturation (A3)
Oxidized Rhizospheres on Living Roots (C3)
Moss Trim Lines (B16)
Water Marks (B1)
Presence of Reduced Iron (C4)
Dry -Season Water Table (C2)
_ Sediment Deposits (B2)
_ Recent Iron Reduction in Tilled Soils (C6) _
Crayfish Burrows (C8)
Drift Deposits (133)
Thin Muck Surface (C7)
Saturation Visible on Aerial Imagery (C9)
Algal Mat or Crust (B4)
Other (Explain in Remarks)
Stunted or Stressed Plants (D1)
Iron Deposits (B5)
X
Geomorphic Position (D2)
Inundation Visible on Aerial Imagery (137)
Shallow Aquitard (D3)
X Water -Stained Leaves (B9)_
Microtopographic Relief (D4)
Aquatic Fauna (B13)
X
FAC -Neutral Test (D5)
Field Observations:
Surface Water Present? Yes No X
Depth (inches):
Water Table Present? Yes No X
Depth (inches):
Wetland Hydrology
Present? Yes X No
Saturation Present? Yes No X
Depth (inches):
_
(includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
Pondedness nearby but not at data point.

VEGETATION (Four Strata) - Use scientific names of plants.
Wetland to
Tree Stratum (Plot size:water edge )
1. Acer rubrum (Maple,red)
2. Fraxinus pennsylvanica (Ash,green)
3. Ulmus americana (Elm,american)
4.
5.
6.
7.
8.
Absolute Dominant Indicator
% Cover Species? Status
25 Y FAC
20 Y FACW
2 FACW
47 = Total Cover
Wetland to
Sapling/Shrub Stratum (Plot size:water edge )
1. Quercus phellos (Oak,willow) 15 Y FACW
2. Acer rubrum (Maple,red) 5 Y FAC
3.
4.
5.
6.
7.
8.
9.
10.
Herb Stratum
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
(Plot size: )
20 = Total Cover
0 = Total Cover
Wetland to
Woody Vine Stratum (Plot size:water edge )
1. Smilax rotundifolia (Greenbrier,common) 5 Y FAC
2.
3.
4.
5.
6.
5 = Total Cover
Remarks: (Include photo numbers here or on a separate sheet.)
Sampling Point 20,000 Wet
Dominance Test worksheet:
Number of Dominant Species
That Are OBL, FACW, or FAC: 5 (A)
Total Number of Dominant
Species Across All Strata: 5 (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: 100 (A/B)
Prevalence Index = B/A =
ydrophytic Vegetation Indicators:
_ 1 - Rapid Test for Hydrophytic Vegetation
X 2 - Dominance Test is > 50%
_ 3 - Prevalence Test is <_ 3.0'
_4 - Morphological Adaptations' (Provide supporting
data in Remarks or on a separate sheet)
Problematic Hydrophytic Vegetation' (Explain)
Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Definitions of Vegetation Strata:
Tree -Woody plants, excluding vines, 3 in. (7.6 cm)
or more in diameter at breast height (DBH),
regardless of height.
Sapling/Shrub - Woody plants, excluding vines, less
than 3 in. DBH and greater than 3.28 ft (1 m) tall.
Herb - All herbaceous (non -woody) plants, regardless
of size, and woody plants less than 3.28 ft tall.
Woody vine - All woody vines greater than 3.28 ft in
height.
Hydrophytic
Vegetation
Present? Yes X No
Prevalence Index worksheet:
Total % Cover of:
Multiply by:
OBL species
x 1 =
FACW species
X 2 =
FAC species
X 3 =
FACU species
X4=
UPL species
X 5 =
Column Totals:
(A) (B)
Prevalence Index = B/A =
ydrophytic Vegetation Indicators:
_ 1 - Rapid Test for Hydrophytic Vegetation
X 2 - Dominance Test is > 50%
_ 3 - Prevalence Test is <_ 3.0'
_4 - Morphological Adaptations' (Provide supporting
data in Remarks or on a separate sheet)
Problematic Hydrophytic Vegetation' (Explain)
Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Definitions of Vegetation Strata:
Tree -Woody plants, excluding vines, 3 in. (7.6 cm)
or more in diameter at breast height (DBH),
regardless of height.
Sapling/Shrub - Woody plants, excluding vines, less
than 3 in. DBH and greater than 3.28 ft (1 m) tall.
Herb - All herbaceous (non -woody) plants, regardless
of size, and woody plants less than 3.28 ft tall.
Woody vine - All woody vines greater than 3.28 ft in
height.
Hydrophytic
Vegetation
Present? Yes X No

SOIL
Sampling Point: 20,000 Wet
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth Matrix
Redox Features
(inches) Color (moist) %
Color (moist) % Tye Loc2 Texture Remarks
0-2 10YR5/2 80
5YR5/8 20 C M Silt Loam
2-12+ 10YR6/1 50
7.5YR5/8 50 C M Silty Clay
'Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains.
2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators:
Indicators for Problematic Hydric Soils':
Histosol (Al)
Dark Surface (S7)
2 cm Muck (A10) (MLRA 147)
Histic Epipedon (A2)
Polyvalue Below Surface (S8) (MLRA 147, 148)
Coast Prairie Redox (A16)
Black Histic (A3)
Thin Dark Suface (S9) (MLRA 147, 148)
(MLRA 147, 148)
Hydrogen Sulfide (A4)
Loamy Gleyed Matrix (F2)
Piedmont Floodplain Soils (F19)
Stratified Layers (A5)
X Depleted Matrix (F3)
(MLRA 136, 147)
2 cm Muck (A10) (LRR N)
Redox Dark Surface (F6)
Red Parent Material (TF2)
Depleted Below Dark Surface (A11)
Depleted Dark Surface (F7)
Very Shallow Dark Surface (TF1 2)
Thick Dark Surface (Al2)
Redox Depressions (F8)
Other (Explain in Remarks)
Sandy Mucky Mineral (S1) (LRR N,
Iron Manganese Masses (F12) (LRR N,
MLRA 147, 148)
MLRA 136)
Sandy Gleyed Matrix (s4)
Sandy Redox (S5)
Umbric Surface (F13) (MLRA 136, 122)
Piedmont Floodplain Soils (F19) (MLRA 148)
31ndicators of Hydrophytic vegetation and
wetland hydrology must be present, unless
Stripped Matrix (S6)
disturbed or problematic.
Restrictive Layer (if observed):
Type:
Depth (inches):
Hydric Soil Present?
Yes X No
Remarks:
Hydric soil criteria met (F3 Depleted Matrix).

WETLAND DETERMINATION DATA FORM — Eastern Mountains and Piedmont
Project/Site: WCPSS M-16 City/County: Wake Sampling Date: Feb 9, 2016
Applicant/Owner: Wake County Public School System State: NC Sampling Point: 30,000 Wet
Investigator(s): Greg Price, Paul Hughes Section, Township, Range: Cary
Landform (hillslope, terrace, etc.) depression Local relief (concave, convex, none): concave
Slope (%): 0-2 Lat: 35.854285 Long: -78.903816 Datum: NAD83
Soil Map Unit Name: WsC2 — White Store sandy loam, 6 to 10% slopes, moderately eroded NWI Classification: PF01A estimated (not mapped)
Are climatic / hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks.)
Are Vegetation Soil or Hydrology significantly disturbed? Are "Normal Circumstances" present? Yes X No
Are Vegetation Soil or Hydrology naturally problematic? (If needed, explain any answers in Remarks.)
JUMIVIAKY UI' PIIVUINkib — Attacn site map snowing sa piing point locations, transects, Important TeatureS, etc.
Hydrophytic Vegetation Present? Yes X No
Is the Sampled Area
Hydric Soil Present? Yes X No within a Wetland? Yes X No
Wetland Hydrology Present? Yes X No
Remarks:
This feature is artificial. It appears as a linear excavated borrow pit
HYDROLOGY
Wetland Hydrology Indicators:
Secondary Indicators (minimum of two required)
Primary Indicators (minimum of one is required; check all that apply)_
Surface Soil Cracks (B6)
X Surface Water (Al)
True Aquatic Plants (1314) X
Sparsely Vegetated Concave Surface (B8)
X High Water Table (A2)
Hydrogen Sulfide Odor (Cl)
Drainage Patterns (B10)
X Saturation (A3)
Oxidized Rhizospheres on Living Roots (C3)
Moss Trim Lines (1316)
Water Marks (B1)
Presence of Reduced Iron (C4)
Dry -Season Water Table (C2)
_ Sediment Deposits (B2)
_ Recent Iron Reduction in Tilled Soils (C6) _
Crayfish Burrows (C8)
Drift Deposits (133)
Thin Muck Surface (C7)
Saturation Visible on Aerial Imagery (C9)
Algal Mat or Crust (134)
Other (Explain in Remarks)
Stunted or Stressed Plants (D1)
Iron Deposits (B5)
Geomorphic Position (D2)
Inundation Visible on Aerial Imagery (137)
Shallow Aquitard (D3)
X Water -Stained Leaves (B9)_
Microtopographic Relief (D4)
X Aquatic Fauna (B13)
X
FAC -Neutral Test (D5)
Field Observations:
Surface Water Present? Yes X No
Depth (inches): 0-12
Water Table Present? Yes X No
Depth (inches): 2
Wetland Hydrology
Present? Yes X No
Saturation Present? Yes X No
Depth (inches): 0
_
(includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
Hydrology criteria met. Observed an adult frog (dead) in water.

VEGETATION (Four Strata) - Use scientific names of plants.
Within
wetland
Tree Stratum (Plot size:boundary )
1. Acer rubrum (Maple,red)
2. Salix nigra (Willow,black)
3.
4.
5.
6.
7.
8.
Within
Sapling/Shrub Stratum (Plot size:wetland )
1. Acer rubrum (Maple,red)
2.
3.
4.
5.
6.
7.
8.
9.
10.
Herb Stratum
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
(Plot size: )
Absolute
Dominant
Indicator
% Cover
Species?
Status
5
Y
FAC
5
Y
OBL
10 = Total Cover
5 Y FAC
5 = Total Cover
0 = Total Cover
Within
Woody Vine Stratum (Plot size:wetland )
1. Smilax rotundifolia (Greenbrier,common) 2 Y FAC
2.
3.
4.
5.
6.
2 = Total Cover
Remarks: (Include photo numbers here or on a separate sheet.)
Sampling Point 30,000 Wet
Dominance Test worksheet:
Number of Dominant Species
That Are OBL, FACW, or FAC: 4 (A)
Total Number of Dominant
Species Across All Strata: 4 (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: 100 (A/B)
Prevalence Index = B/A =
ydrophytic Vegetation Indicators:
_ 1 - Rapid Test for Hydrophytic Vegetation
X 2 - Dominance Test is > 50%
_ 3 - Prevalence Test is <_ 3.0'
_4 - Morphological Adaptations' (Provide supporting
data in Remarks or on a separate sheet)
Problematic Hydrophytic Vegetation' (Explain)
Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Definitions of Vegetation Strata:
Tree -Woody plants, excluding vines, 3 in. (7.6 cm)
or more in diameter at breast height (DBH),
regardless of height.
Sapling/Shrub - Woody plants, excluding vines, less
than 3 in. DBH and greater than 3.28 ft (1 m) tall.
Herb - All herbaceous (non -woody) plants, regardless
of size, and woody plants less than 3.28 ft tall.
Woody vine - All woody vines greater than 3.28 ft in
height.
Hydrophytic
Vegetation
Present? Yes X No
Prevalence Index worksheet:
Total % Cover of:
Multiply by:
OBL species
x 1 =
FACW species
X 2 =
FAC species
X 3 =
FACU species
X4=
UPL species
X 5 =
Column Totals:
(A) (B)
Prevalence Index = B/A =
ydrophytic Vegetation Indicators:
_ 1 - Rapid Test for Hydrophytic Vegetation
X 2 - Dominance Test is > 50%
_ 3 - Prevalence Test is <_ 3.0'
_4 - Morphological Adaptations' (Provide supporting
data in Remarks or on a separate sheet)
Problematic Hydrophytic Vegetation' (Explain)
Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Definitions of Vegetation Strata:
Tree -Woody plants, excluding vines, 3 in. (7.6 cm)
or more in diameter at breast height (DBH),
regardless of height.
Sapling/Shrub - Woody plants, excluding vines, less
than 3 in. DBH and greater than 3.28 ft (1 m) tall.
Herb - All herbaceous (non -woody) plants, regardless
of size, and woody plants less than 3.28 ft tall.
Woody vine - All woody vines greater than 3.28 ft in
height.
Hydrophytic
Vegetation
Present? Yes X No

SOIL
Sampling Point: 30,000 Wet
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth Matrix
Redox Features
(inches) Color (moist) %
Color (moist) % Tye Loc2 Texture Remarks
0-12+ 10YR5/1 60
2.5YR4/8 40 C M Silty Clay
'Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains.
2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators:
Indicators for Problematic Hydric Soils':
Histosol (Al)
Dark Surface (S7)
2 cm Muck (A10) (MLRA 147)
Histic Epipedon (A2)
Polyvalue Below Surface (S8) (MLRA 147, 148)
Coast Prairie Redox (A16)
Black Histic (A3)
Thin Dark Suface (S9) (MLRA 147, 148)
(MLRA 147, 148)
Hydrogen Sulfide (A4)
Loamy Gleyed Matrix (F2)
Piedmont Floodplain Soils (F19)
Stratified Layers (A5)
X Depleted Matrix (F3)
(MLRA 136, 147)
2 cm Muck (A10) (LRR N)
Redox Dark Surface (F6)
Red Parent Material (TF2)
Depleted Below Dark Surface (A11)
Depleted Dark Surface (F7)
Very Shallow Dark Surface (TF1 2)
Thick Dark Surface (Al2)
Redox Depressions (F8)
Other (Explain in Remarks)
Sandy Mucky Mineral (S1) (LRR N,
Iron Manganese Masses (F12) (LRR N,
MLRA 147, 148)
MLRA 136)
Sandy Gleyed Matrix (s4)
Sandy Redox (S5)
Umbric Surface (F13) (MLRA 136, 122)
Piedmont Floodplain Soils (F19) (MLRA 148)
31ndicators of Hydrophytic vegetation and
wetland hydrology must be present, unless
Stripped Matrix (S6)
disturbed or problematic.
Restrictive Layer (if observed):
Type:
Depth (inches):
Hydric Soil Present?
Yes X No
Remarks:
Hydric soil criteria met (F3 depleted matrix).

WETLAND DETERMINATION DATA FORM — Eastern Mountains and Piedmont
Project/Site: WCPSS M-16 City/County: Wake Sampling Date: Feb 9, 2016
Applicant/Owner: Wake County Public School System State: NC Sampling Point: 40,000 Wet
Investigator(s): Greg Price, Paul Hughes Section, Township, Range: Cary
Landform (hillslope, terrace, etc.) depression Local relief (concave, convex, none): concave
Slope (%): 0-2 Lat: 35.856680 Long: -78.904276 Datum: NAD83
Soil Map Unit Name: WsE - White Store sandy loam, 10 to 20% slope NWI Classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks.)
Are Vegetation Soil or Hydrology significantly disturbed? Are "Normal Circumstances" present? Yes X No
Are Vegetation Soil or Hydrology naturally problematic? (If needed, explain any answers in Remarks.)
JUMIVIAKY UI' PIIVUINkib — Attacn site map snowing sa piing point locations, transects, Important TeatureS, etc.
Hydrophytic Vegetation Present? Yes X No
Is the Sampled Area
Hydric Soil Present? Yes X No within a Wetland? Yes X No
Wetland Hydrology Present? Yes X No
Remarks
HYDROLOGY
Wetland Hydrology Indicators:
Secondary Indicators (minimum of two required)
Primary Indicators (minimum of one is required; check all that apply)_
Surface Soil Cracks (B6)
X Surface Water (Al)
True Aquatic Plants (1314) X
Sparsely Vegetated Concave Surface (B8)
X High Water Table (A2)
Hydrogen Sulfide Odor (Cl)
Drainage Patterns (B10)
X Saturation (A3)
Oxidized Rhizospheres on Living Roots (C3)
Moss Trim Lines (1316)
Water Marks (B1)
Presence of Reduced Iron (C4)
Dry -Season Water Table (C2)
_ Sediment Deposits (B2)
_ Recent Iron Reduction in Tilled Soils (C6) _
Crayfish Burrows (C8)
Drift Deposits (133)
Thin Muck Surface (C7)
Saturation Visible on Aerial Imagery (C9)
Algal Mat or Crust (134)
Other (Explain in Remarks)
Stunted or Stressed Plants (D1)
Iron Deposits (B5)
Geomorphic Position (D2)
Inundation Visible on Aerial Imagery (137)
Shallow Aquitard (D3)
X Water -Stained Leaves (B9)
Microtopographic Relief (D4)
Aquatic Fauna (B13)
_
FAC -Neutral Test (D5)
Field Observations:
Surface Water Present? Yes X No
Depth (inches): 0-6
Water Table Present? Yes X No
Depth (inches): 1
Wetland Hydrology
Present? Yes X No
Saturation Present? Yes X No _
Depth (inches): 0
(includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
This feature is artificial. It appears to be an linear excavated borrow pit near pond. Ponded to about 6 inches.

VEGETATION (Four Strata) - Use scientific names of plants.
Tree Stratum
1.
2.
3.
4.
5.
6.
7.
8.
(Plot size: )
Sapling/Shrub Stratum (Plot size: )
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Herb Stratum
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
(Plot size: )
Sampling Point 40,000 Wet
Absolute Dominant Indicator
% Cover Species? Status
Dominance Test worksheet:
Number of Dominant Species
That Are OBL, FACW, or FAC: 1 (A)
Total Number of Dominant
Species Across All Strata: 1 (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: 100 (A/B)
Prevalence Index worksheet:
Total % Cover of: Multiply by:
OBL species x 1 =
FACW species X 2 =
FAC species X 3 =
FACU species X4=
UPL species X 5 =
Column Totals: (A) (B)
Prevalence Index = B/A =
0 = Total Cover
0 = Total Cover
Hydrophytic Vegetation Indicators:
1 - Rapid Test for Hydrophytic Vegetation
X 2 - Dominance Test is > 50%
3 - Prevalence Test is <_ 3.0'
4 - Morphological Adaptations' (Provide supporting
data in Remarks or on a separate sheet)
Problematic Hydrophytic Vegetation' (Explain)
'Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Definitions of Vegetation Strata:
Tree -Woody plants, excluding vines, 3 in. (7.6 cm)
or more in diameter at breast height (DBH),
regardless of height.
Sapling/Shrub - Woody plants, excluding vines, less
than 3 in. DBH and greater than 3.28 ft (1 m) tall.
Herb - All herbaceous (non -woody) plants, regardless
of size and wood lants less than 3 28 ft tall
0 = Total Cover
Woody Vine Stratum (Plot size: ) Iy p
1. Smilax rotundifolia (Greenbrier,common) 2 Y FAC Woody vine - All woody vines greater than 3.28 ft in
2. height.
3.
4.
5 Hydrophytic
Vegetation
6. Present? Yes X No
2 = Total Cover
Remarks: (Include photo numbers here or on a separate sheet.)

SOIL
Sampling Point: 40,000 Wet
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth Matrix
Redox Features
(inches) Color (moist) %
Color (moist) % Tye Loc2
Texture Remarks
0-3 10YR5/2 100
N/A N/A
Clay Loam
3-7 10YR5/2 70
7.5YR4/6 30 C M
Clay Loam
7-12+ 10YR5/4 90
10YR5/8 10 C M
Sandy
'Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators:
Indicators for Problematic Hydric Soils':
Histosol (Al)
Dark Surface (S7)
2 cm Muck (A10) (MLRA 147)
Histic Epipedon (A2)
Polyvalue Below Surface (S8) (MLRA 147, 148) Coast Prairie Redox (A16)
Black Histic (A3)
Thin Dark Suface (S9) (MLRA 147, 148)
(MLRA 147, 148)
Hydrogen Sulfide (A4)
Loamy Gleyed Matrix (F2)
Piedmont Floodplain Soils (F19)
Stratified Layers (A5)
X Depleted Matrix (F3)
(MLRA 136, 147)
2 cm Muck (A10) (LRR N)
Redox Dark Surface (F6)
Red Parent Material (TF2)
Depleted Below Dark Surface (A11)
Depleted Dark Surface (F7)
Very Shallow Dark Surface (TF1 2)
Thick Dark Surface (Al2)
Redox Depressions (F8)
Other (Explain in Remarks)
Sandy Mucky Mineral (S1) (LRR N,
Iron Manganese Masses (F12) (LRR N,
MLRA 147, 148)
MLRA 136)
Sandy Gleyed Matrix (s4)
Sandy Redox (S5)
Umbric Surface (F13) (MLRA 136, 122)
31ndicators of Hydrophytic vegetation and
Piedmont Floodplain Soils (F19) (MLRA 148) wetland hydrology must be present, unless
Stripped Matrix (S6)
disturbed or problematic.
Restrictive Layer (if observed):
Type:
Depth (inches):
Hydric Soil Present? Yes X No
Remarks:
Hydric soil criteria met (F3 depleted matrix).

WETLAND DETERMINATION DATA FORM — Eastern Mountains and Piedmont
Project/Site: WCPSS M-16 City/County: Wake Sampling Date: Feb 9, 2016
Applicant/Owner: Wake County Public School System State: NC Sampling Point: 50,000 Up
Investigator(s): Greg Price, Paul Hughes Section, Township, Range: Cary
Landform (hillslope, terrace, etc.) Floodplain terrace Local relief (concave, convex, none): none
Slope (%): 0-2 Lat: 35.853364 Long: -78.903680 Datum: NAD83
Soil Map Unit Name: CmA — Chewacla sandy loam, 0 to 2% slopes, frequently flooded NWI Classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks.)
Are Vegetation Soil or Hydrology significantly disturbed? Are "Normal Circumstances" present? Yes X
Are Vegetation Soil or Hydrology naturally problematic? (If needed, explain any answers in Remarks.)
No
JUMIVIAKY UI' PIIVUINkib — Attacn site map snowing sa piing point locations, transects, Important TeatureS, etc.
Hydrophytic Vegetation Present? Yes X No
Is the Sampled Area
Hydric Soil Present? Yes No X within a Wetland? Yes No X
Wetland Hydrology Present? Yes X No
Remarks:
Floodplain near flag 50,002
HYDROLOGY
Wetland Hydrology Indicators:
Secondary Indicators (minimum of two required)
Primary Indicators (minimum of one is required; check all that apply) _
Surface Soil Cracks (B6)
Surface Water (Al)
True Aquatic Plants (1314)
Sparsely Vegetated Concave Surface (B8)
X High Water Table (A2)
Hydrogen Sulfide Odor (Cl)
Drainage Patterns (B10)
X Saturation (A3)
Oxidized Rhizospheres on Living Roots (C3)
Moss Trim Lines (B16)
Water Marks (B1)
Presence of Reduced Iron (C4)
Dry -Season Water Table (C2)
_ Sediment Deposits (B2)
_ Recent Iron Reduction in Tilled Soils (C6) _
Crayfish Burrows (C8)
Drift Deposits (133)
Thin Muck Surface (C7)
Saturation Visible on Aerial Imagery (C9)
Algal Mat or Crust (B4)
Other (Explain in Remarks)
Stunted or Stressed Plants (D1)
Iron Deposits (B5)
Geomorphic Position (D2)
Inundation Visible on Aerial Imagery (137)
Shallow Aquitard (D3)
_ Water -Stained Leaves (B9)
_
Microtopographic Relief (D4)
Aquatic Fauna (B13)
FAC -Neutral Test (D5)
Field Observations:
Surface Water Present? Yes No X
Depth (inches):
Water Table Present? Yes X No
Depth (inches): 12
Wetland Hydrology
Present? Yes X No
Saturation Present? Yes X No
Depth (inches): 10
_
(includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
Hydrology criteria met.

VEGETATION (Four Strata) - Use scientific names of plants.
Herb Stratum
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
(Plot size: )
Woody Vine Stratum (Plot size
1.
2.
3.
4.
5.
6.
15 = Total Cover
0 = Total Cover
0 = Total Cover
Remarks: (Include photo numbers here or on a separate sheet.)
Meets hydrophytic vegetation criteria.
Sampling Point 50,000 Up
Dominance Test worksheet:
Number of Dominant Species
That Are OBL, FACW, or FAC: 5 (A)
Total Number of Dominant
Species Across All Strata: 5 (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: 100 (A/B)
Absolute
Dominant
Indicator
Tree Stratum (Plot size: 20' Radius )
% Cover
Species?
Status
1.
Pinus taeda (Pine,loblolly)
30
Y
FAC
2.
Liquidambar styraciflua (Gum,sweet)
15
Y
FAC
3.
Liriodendron tulipifera (Tree,tulip)
15
Y
FAC
4.
Fraxinus pennsylvanica (Ash,green)
5
FACW
5.
Prunus serotina (Cherry,black)
5
FACU
6.
Quercus falcata (Oak,southern red)
5
FACU
7.
8.
75
= Total Cover
Sapling/Shrub Stratum (Plot size: )
1.
Liquidambar styraciflua (Gum,sweet)
10
Y
FAC
2.
Acer rubrum (Maple,red)
5
Y
FAC
3.
4.
5.
6.
7.
8.
9.
10.
Herb Stratum
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
(Plot size: )
Woody Vine Stratum (Plot size
1.
2.
3.
4.
5.
6.
15 = Total Cover
0 = Total Cover
0 = Total Cover
Remarks: (Include photo numbers here or on a separate sheet.)
Meets hydrophytic vegetation criteria.
Sampling Point 50,000 Up
Dominance Test worksheet:
Number of Dominant Species
That Are OBL, FACW, or FAC: 5 (A)
Total Number of Dominant
Species Across All Strata: 5 (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: 100 (A/B)
Prevalence Index = B/A =
ydrophytic Vegetation Indicators:
_ 1 - Rapid Test for Hydrophytic Vegetation
X 2 - Dominance Test is > 50%
_ 3 - Prevalence Test is <_ 3.0'
_4 - Morphological Adaptations' (Provide supporting
data in Remarks or on a separate sheet)
Problematic Hydrophytic Vegetation' (Explain)
Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Definitions of Vegetation Strata:
Tree -Woody plants, excluding vines, 3 in. (7.6 cm)
or more in diameter at breast height (DBH),
regardless of height.
Sapling/Shrub - Woody plants, excluding vines, less
than 3 in. DBH and greater than 3.28 ft (1 m) tall.
Herb - All herbaceous (non -woody) plants, regardless
of size, and woody plants less than 3.28 ft tall.
Woody vine - All woody vines greater than 3.28 ft in
height.
Hydrophytic
Vegetation
Present? Yes X No
Prevalence Index worksheet:
Total % Cover of:
Multiply by:
OBL species
x 1 =
FACW species
X 2 =
FAC species
X 3 =
FACU species
X4=
UPL species
X 5 =
Column Totals:
(A) (B)
Prevalence Index = B/A =
ydrophytic Vegetation Indicators:
_ 1 - Rapid Test for Hydrophytic Vegetation
X 2 - Dominance Test is > 50%
_ 3 - Prevalence Test is <_ 3.0'
_4 - Morphological Adaptations' (Provide supporting
data in Remarks or on a separate sheet)
Problematic Hydrophytic Vegetation' (Explain)
Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Definitions of Vegetation Strata:
Tree -Woody plants, excluding vines, 3 in. (7.6 cm)
or more in diameter at breast height (DBH),
regardless of height.
Sapling/Shrub - Woody plants, excluding vines, less
than 3 in. DBH and greater than 3.28 ft (1 m) tall.
Herb - All herbaceous (non -woody) plants, regardless
of size, and woody plants less than 3.28 ft tall.
Woody vine - All woody vines greater than 3.28 ft in
height.
Hydrophytic
Vegetation
Present? Yes X No

SOIL
Sampling Point: 50,000 Up
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth Matrix
Redox Features
(inches) Color (moist) %
Color (moist) % Tye Loc2 Texture Remarks
0-2 10YR4/3 100
N/A N/A Silt Loam
2-12 10YR5/3 75
10YR3/2 25 D M Silt Loam
12+ 10YR5/1 65
10YR5/6 35 C M Silt Loam
'Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains.
2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators:
Indicators for Problematic Hydric Soils':
Histosol (Al)
Dark Surface (S7)
2 cm Muck (A10) (MLRA 147)
Histic Epipedon (A2)
Polyvalue Below Surface (S8) (MLRA 147, 148)
Coast Prairie Redox (A16)
Black Histic (A3)
Thin Dark Suface (S9) (MLRA 147, 148)
(MLRA 147, 148)
Hydrogen Sulfide (A4)
Loamy Gleyed Matrix (F2)
Piedmont Floodplain Soils (F19)
Stratified Layers (A5)
Depleted Matrix (F3)
(MLRA 136, 147)
2 cm Muck (A10) (LRR N)
Redox Dark Surface (F6)
Red Parent Material (TF2)
Depleted Below Dark Surface (A11)
Depleted Dark Surface (F7)
Very Shallow Dark Surface (TF1 2)
Thick Dark Surface (Al2)
Redox Depressions (F8)
Other (Explain in Remarks)
Sandy Mucky Mineral (S1) (LRR N,
Iron Manganese Masses (F12) (LRR N,
MLRA 147, 148)
MLRA 136)
Sandy Gleyed Matrix (s4)
Sandy Redox (S5)
Umbric Surface (F13) (MLRA 136, 122)
Piedmont Floodplain Soils (F19) (MLRA 148)
31ndicators of Hydrophytic vegetation and
wetland hydrology must be present, unless
Stripped Matrix (S6)
disturbed or problematic.
Restrictive Layer (if observed):
Type:
Depth (inches):
Hydric Soil Present?
Yes No X
Remarks:
No hydric soil indicator met. It was close to meeting F3 criteria.

WETLAND DETERMINATION DATA FORM — Eastern Mountains and Piedmont
Project/Site: WCPSS M-16 City/County: Wake Sampling Date: Feb 9, 2016
Applicant/Owner: Wake County Public School System State: NC Sampling Point: 50,000 Wet
Investigator(s): Greg Price, Paul Hughes Section, Township, Range: Cary
Landform (hillslope, terrace, etc.) Depression Local relief (concave, convex, none): concave
Slope (%): 0-2 Lat: 35.853322 Long: -78.903740 Datum: NAD 83
Soil Map Unit Name: CmA — Chewacla sandy loam, 0 to 2% slopes, frequently flooded NWI Classification: PF01A estimated (not mapped)
Are climatic / hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks.)
Are Vegetation Soil or Hydrology significantly disturbed? Are "Normal Circumstances" present? Yes X No
Are Vegetation Soil or Hydrology naturally problematic? (If needed, explain any answers in Remarks.)
JUMIVIAKY UI' PIIVUINkib — Attacn site map snowing sa piing point locations, transects, Important TeatureS, etc.
Hydrophytic Vegetation Present? Yes X No
Is the Sampled Area
Hydric Soil Present? Yes X No within a Wetland? Yes X No
Wetland Hydrology Present? Yes X No
Remarks:
Downstream and across road from Wetland 10,000. Inlet pipe is 12 inches in diameter
HYDROLOGY
Wetland Hydrology Indicators:
Secondary Indicators (minimum of two required)
Primary Indicators (minimum of one is required; check all that apply)
Surface Soil Cracks (B6)
Surface Water (Al)
_
True Aquatic Plants (1314)
Sparsely Vegetated Concave Surface (B8)
X High Water Table (A2)
Hydrogen Sulfide Odor (Cl) X
Drainage Patterns (1310)
X Saturation (A3)
Oxidized Rhizospheres on Living Roots (C3)
Moss Trim Lines (1316)
Water Marks (B1)
Presence of Reduced Iron (C4)
Dry -Season Water Table (C2)
_ Sediment Deposits (B2)
_ Recent Iron Reduction in Tilled Soils (C6) _
Crayfish Burrows (C8)
Drift Deposits (133)
Thin Muck Surface (C7)
Saturation Visible on Aerial Imagery (C9)
Algal Mat or Crust (134)
Other (Explain in Remarks)
Stunted or Stressed Plants (D1)
Iron Deposits (B5)
Geomorphic Position (D2)
Inundation Visible on Aerial Imagery (137)
Shallow Aquitard (D3)
X Water -Stained Leaves (B9)_
Microtopographic Relief (D4)
Aquatic Fauna (B13)
X
FAC -Neutral Test (D5)
Field Observations:
Surface Water Present? Yes No X
Depth (inches):
Water Table Present? Yes X No
Depth (inches): 3
Wetland Hydrology
Present? Yes X No
Saturation Present? Yes X No
Depth (inches): 0
_
(includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
Hydrology criteria met.

VEGETATION (Four Strata) - Use scientific names of plants.
Tree Stratum (Plot size: 20' Radius )
1. Fraxinus pennsylvanica (Ash,green)
2. Liquidambar styraciflua (Gum,sweet)
3. Liriodendron tulipifera (Tree,tulip)
4.
5.
6.
7.
8.
Absolute Dominant Indicator
% Cover Species? Status
40 Y FACW
15 Y FAC
15 Y FAC
70 = Total Cover
Sapling/Shrub Stratum (Plot size: 29 Radius )
1. Liquidambar styraciflua (Gum,sweet) 15 Y FAC
2. Fraxinus pennsylvanica (Ash,green) 10 Y FACW
3.
4.
5.
6.
7.
8.
9.
10.
Herb Stratum
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
(Plot size: 20' Radius )
25 = Total Cover
0 = Total Cover
Woody Vine Stratum (Plot size: 29 Radius )
1. Lonicera japonica (Honeysuckle,japanese) 20 Y FAC
2.
3.
4.
5.
6.
20 = Total Cover
Remarks: (Include photo numbers here or on a separate sheet.)
Multistemmed green ash. Hydrophytic vegetation criteria met.
Sampling Point 50,000 Wet
Dominance Test worksheet:
Number of Dominant Species
That Are OBL, FACW, or FAC: 6 (A)
Total Number of Dominant
Species Across All Strata: 6 (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: 100 (A/B)
Prevalence Index = B/A =
ydrophytic Vegetation Indicators:
_ 1 - Rapid Test for Hydrophytic Vegetation
X 2 - Dominance Test is > 50%
_ 3 - Prevalence Test is <_ 3.0'
X 4 - Morphological Adaptations' (Provide supporting
data in Remarks or on a separate sheet)
Problematic Hydrophytic Vegetation' (Explain)
Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Definitions of Vegetation Strata:
Tree -Woody plants, excluding vines, 3 in. (7.6 cm)
or more in diameter at breast height (DBH),
regardless of height.
Sapling/Shrub - Woody plants, excluding vines, less
than 3 in. DBH and greater than 3.28 ft (1 m) tall.
Herb - All herbaceous (non -woody) plants, regardless
of size, and woody plants less than 3.28 ft tall.
Woody vine - All woody vines greater than 3.28 ft in
height.
Hydrophytic
Vegetation
Present? Yes X No
Prevalence Index worksheet:
Total % Cover of:
Multiply by:
OBL species
x 1 =
FACW species
X 2 =
FAC species
X 3 =
FACU species
X4=
UPL species
X 5 =
Column Totals:
(A) (B)
Prevalence Index = B/A =
ydrophytic Vegetation Indicators:
_ 1 - Rapid Test for Hydrophytic Vegetation
X 2 - Dominance Test is > 50%
_ 3 - Prevalence Test is <_ 3.0'
X 4 - Morphological Adaptations' (Provide supporting
data in Remarks or on a separate sheet)
Problematic Hydrophytic Vegetation' (Explain)
Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Definitions of Vegetation Strata:
Tree -Woody plants, excluding vines, 3 in. (7.6 cm)
or more in diameter at breast height (DBH),
regardless of height.
Sapling/Shrub - Woody plants, excluding vines, less
than 3 in. DBH and greater than 3.28 ft (1 m) tall.
Herb - All herbaceous (non -woody) plants, regardless
of size, and woody plants less than 3.28 ft tall.
Woody vine - All woody vines greater than 3.28 ft in
height.
Hydrophytic
Vegetation
Present? Yes X No

SOIL
Sampling Point: 50,000 Wet
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth Matrix
Redox Features
(inches) Color (moist) %
Color (moist) % Tye Loc2 Texture Remarks
0-2 10YR5/1 100
N/A N/A Silt Loam
2-12+ 10YR5/2 70
2.5YR3/6 30 C M Silt Loam
'Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains.
2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators:
Indicators for Problematic Hydric Soils':
Histosol (Al)
Dark Surface (S7)
2 cm Muck (A10) (MLRA 147)
Histic Epipedon (A2)
Polyvalue Below Surface (S8) (MLRA 147, 148)
Coast Prairie Redox (A16)
Black Histic (A3)
Thin Dark Suface (S9) (MLRA 147, 148)
(MLRA 147, 148)
Hydrogen Sulfide (A4)
Loamy Gleyed Matrix (F2)
Piedmont Floodplain Soils (F19)
Stratified Layers (A5)
X Depleted Matrix (F3)
(MLRA 136, 147)
2 cm Muck (A10) (LRR N)
Redox Dark Surface (F6)
Red Parent Material (TF2)
Depleted Below Dark Surface (A11)
Depleted Dark Surface (F7)
Very Shallow Dark Surface (TF1 2)
Thick Dark Surface (Al2)
Redox Depressions (F8)
Other (Explain in Remarks)
Sandy Mucky Mineral (S1) (LRR N,
Iron Manganese Masses (F12) (LRR N,
MLRA 147, 148)
MLRA 136)
Sandy Gleyed Matrix (s4)
Sandy Redox (S5)
Umbric Surface (F13) (MLRA 136, 122)
Piedmont Floodplain Soils (F19) (MLRA 148)
31ndicators of Hydrophytic vegetation and
wetland hydrology must be present, unless
Stripped Matrix (S6)
disturbed or problematic.
Restrictive Layer (if observed):
Type:
Depth (inches):
Hydric Soil Present?
Yes X No
Remarks:
Hydric Soil Criteria met (F3 depleted matrix).

WETLAND DETERMINATION DATA FORM — Eastern Mountains and Piedmont
Project/Site: WCPSS M-16 City/County: Wake Sampling Date: Feb 10, 2016
Applicant/Owner: Wake County Public School System State: NC Sampling Point: 60,000 Up
Investigator(s): Greg Price Section, Township, Range: Cary
Landform (hillslope, terrace, etc.) terrace Local relief (concave, convex, none): none
Slope (%): 0-2 Lat: 35.856689 Long: -78.906771 Datum: NAD83
Soil Map Unit Name: WyA — Worsham sandy loam, 0 to 3% slopes NWI Classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks.)
Are Vegetation Soil or Hydrology significantly disturbed? Are "Normal Circumstances" present? Yes X
Are Vegetation Soil or Hydrology naturally problematic? (If needed, explain any answers in Remarks.)
No
JUMIVIAKY UI' PIIVUINkib — Attacn site map snowing sa piing point locations, transects, Important TeatureS, etc.
Hydrophytic Vegetation Present? Yes X No
Is the Sampled Area
Hydric Soil Present? Yes No X within a Wetland? Yes No X
Wetland Hydrology Present? Yes No X
Remarks:
Taken approximately 12 feet outward from Flags 60,001 and 60,002
HYDROLOGY
Wetland Hydrology Indicators:
Secondary Indicators (minimum of two required)
Primary Indicators (minimum of one is required; check all that apply)
Surface Soil Cracks (B6)
Surface Water (Al)
_
True Aquatic Plants (1314)
Sparsely Vegetated Concave Surface (B8)
High Water Table (A2)
Hydrogen Sulfide Odor (Cl)
Drainage Patterns (B10)
Saturation (A3)
Oxidized Rhizospheres on Living Roots (C3)
Moss Trim Lines (B16)
Water Marks (B1)
Presence of Reduced Iron (C4)
Dry -Season Water Table (C2)
_ Sediment Deposits (B2)
_ Recent Iron Reduction in Tilled Soils (C6) _
Crayfish Burrows (C8)
Drift Deposits (133)
Thin Muck Surface (C7)
Saturation Visible on Aerial Imagery (C9)
Algal Mat or Crust (B4)
Other (Explain in Remarks)
Stunted or Stressed Plants (D1)
Iron Deposits (B5)
Geomorphic Position (D2)
Inundation Visible on Aerial Imagery (137)
Shallow Aquitard (D3)
_ Water -Stained Leaves (B9)
_
Microtopographic Relief (D4)
Aquatic Fauna (B13)
FAC -Neutral Test (D5)
Field Observations:
Surface Water Present? Yes No X
Depth (inches):
Water Table Present? Yes No X
Depth (inches):
Wetland Hydrology
Present? Yes No X
Saturation Present? Yes No X
Depth (inches):
_
(includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
Does not meet hydrology criteria.

VEGETATION (Four Strata) - Use scientific names of plants.
Tree Stratum (Plot size: 20' Radius )
1. Acer rubrum (Maple,red)
2. Liquidambar styraciflua (Gum,sweet)
3. Quercus falcata (Oak,southern red)
4. Quercus alba (Oak,white)
5. Prunus serotina (Cherry,black)
6.
7.
8.
Absolute Dominant Indicator
% Cover Species? Status
30
Y FAC
15
Y FAC
15
Y FACU
5
FACU
2
FACU
67 = Total Cover
Sapling/Shrub Stratum (Plot size: 29 Radius )
1. Acer rubrum (Maple,red) 15 Y FAC
2. Liquidambar styraciflua (Gum,sweet) 10 Y FAC
3. Quercus alba (Oak,white) 2.5 FACU
4.
5.
6.
7.
8.
9.
10.
27.5 = Total Cover
Herb Stratum (Plot size
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
Woody Vine Stratum (Plot size
1.
2.
3.
4.
5.
6.
0 = Total Cover
0 = Total Cover
Remarks: (Include photo numbers here or on a separate sheet.)
Meets hydrophytic vegetation criteria.
Sampling Point 60,000 Up
Dominance Test worksheet:
Number of Dominant Species
That Are OBL, FACW, or FAC: 4 (A)
Total Number of Dominant
Species Across All Strata: 5 (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: 80 (A/B)
Prevalence Index = B/A =
ydrophytic Vegetation Indicators:
_ 1 - Rapid Test for Hydrophytic Vegetation
X 2 - Dominance Test is > 50%
_ 3 - Prevalence Test is <_ 3.0'
_4 - Morphological Adaptations' (Provide supporting
data in Remarks or on a separate sheet)
Problematic Hydrophytic Vegetation' (Explain)
Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Definitions of Vegetation Strata:
Tree -Woody plants, excluding vines, 3 in. (7.6 cm)
or more in diameter at breast height (DBH),
regardless of height.
Sapling/Shrub - Woody plants, excluding vines, less
than 3 in. DBH and greater than 3.28 ft (1 m) tall.
Herb - All herbaceous (non -woody) plants, regardless
of size, and woody plants less than 3.28 ft tall.
Woody vine - All woody vines greater than 3.28 ft in
height.
Hydrophytic
Vegetation
Present? Yes X No
Prevalence Index worksheet:
Total % Cover of:
Multiply by:
OBL species
x 1 =
FACW species
X 2 =
FAC species
X 3 =
FACU species
X4=
UPL species
X 5 =
Column Totals:
(A) (B)
Prevalence Index = B/A =
ydrophytic Vegetation Indicators:
_ 1 - Rapid Test for Hydrophytic Vegetation
X 2 - Dominance Test is > 50%
_ 3 - Prevalence Test is <_ 3.0'
_4 - Morphological Adaptations' (Provide supporting
data in Remarks or on a separate sheet)
Problematic Hydrophytic Vegetation' (Explain)
Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Definitions of Vegetation Strata:
Tree -Woody plants, excluding vines, 3 in. (7.6 cm)
or more in diameter at breast height (DBH),
regardless of height.
Sapling/Shrub - Woody plants, excluding vines, less
than 3 in. DBH and greater than 3.28 ft (1 m) tall.
Herb - All herbaceous (non -woody) plants, regardless
of size, and woody plants less than 3.28 ft tall.
Woody vine - All woody vines greater than 3.28 ft in
height.
Hydrophytic
Vegetation
Present? Yes X No

SOIL
Sampling Point: 60,000 Up
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth Matrix
Redox Features
(inches) Color (moist) %
Color (moist) % Tye Loc2 Texture Remarks
0-5 7.5YR4/3 100
N/A N/A Silt Loam
5-12+ 10YR5/4 100
N/A N/A Silt Loam
'Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains.
2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators:
Indicators for Problematic Hydric Soils':
Histosol (Al)
Dark Surface (S7)
2 cm Muck (A10) (MLRA 147)
Histic Epipedon (A2)
Polyvalue Below Surface (S8) (MLRA 147, 148)
Coast Prairie Redox (A16)
Black Histic (A3)
Thin Dark Suface (S9) (MLRA 147, 148)
(MLRA 147, 148)
Hydrogen Sulfide (A4)
Loamy Gleyed Matrix (F2)
Piedmont Floodplain Soils (F19)
Stratified Layers (A5)
Depleted Matrix (F3)
(MLRA 136, 147)
2 cm Muck (A10) (LRR N)
Redox Dark Surface (F6)
Red Parent Material (TF2)
Depleted Below Dark Surface (A11)
Depleted Dark Surface (F7)
Very Shallow Dark Surface (TF1 2)
Thick Dark Surface (Al2)
Redox Depressions (F8)
Other (Explain in Remarks)
Sandy Mucky Mineral (S1) (LRR N,
Iron Manganese Masses (F12) (LRR N,
MLRA 147, 148)
MLRA 136)
Sandy Gleyed Matrix (s4)
Sandy Redox (S5)
Umbric Surface (F13) (MLRA 136, 122)
Piedmont Floodplain Soils (F19) (MLRA 148)
31ndicators of Hydrophytic vegetation and
wetland hydrology must be present, unless
Stripped Matrix (S6)
disturbed or problematic.
Restrictive Layer (if observed):
Type:
Depth (inches):
Hydric Soil Present?
Yes No X
Remarks:
No hydric soil indicators met.

WETLAND DETERMINATION DATA FORM — Eastern Mountains and Piedmont
Project/Site: WCPSS M-16 City/County: Wake Sampling Date: Feb 10, 2016
Applicant/Owner: Wake County Public School System State: NC Sampling Point: 60,000 Wet
Investigator(s): Greg Price Section, Township, Range: Cary
Landform (hillslope, terrace, etc.) depression Local relief (concave, convex, none): concave
Slope (%): 0-2 Lat: 35.856692 Long: -78.906816 Datum: NAD83
Soil Map Unit Name: WyA— Worsham sandy loam, 0 to 3% slopes NWI Classification: PF01A estimated (not mapped)
Are climatic / hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks.)
Are Vegetation Soil or Hydrology significantly disturbed? Are "Normal Circumstances" present? Yes X No
Are Vegetation Soil or Hydrology naturally problematic? (If needed, explain any answers in Remarks.)
JUMIVIAKT UI' PIIVUINkib — ATtacn size map snoWlna sammina DOlnt locations. Transects. ImDortant Teatures. etc.
Hydrophytic Vegetation Present? Yes X No
Is the Sampled Area
Hydric Soil Present? Yes X No within a Wetland? Yes X No
Wetland Hydrology Present? Yes X No
Remarks:
Drains into ephemeral channel which drains into Stream 1,000 (UT to Kit Creek). NC WAM classification = Headwater Forest
HYDROLOGY
Wetland Hydrology Indicators:
Secondary Indicators (minimum of two required)
Primary Indicators (minimum of one is required; check all that apply) _
Surface Soil Cracks (B6)
Surface Water (Al)
True Aquatic Plants (1314)
Sparsely Vegetated Concave Surface (B8)
X High Water Table (A2)
Hydrogen Sulfide Odor (Cl) X
Drainage Patterns (1310)
X Saturation (A3)
Oxidized Rhizospheres on Living Roots (C3) X
Moss Trim Lines (1316)
Water Marks (B1)
Presence of Reduced Iron (C4)
Dry -Season Water Table (C2)
_ Sediment Deposits (B2)
_ Recent Iron Reduction in Tilled Soils (C6) _
Crayfish Burrows (C8)
Drift Deposits (133)
Thin Muck Surface (C7)
Saturation Visible on Aerial Imagery (C9)
Algal Mat or Crust (134)
Other (Explain in Remarks)
Stunted or Stressed Plants (D1)
Iron Deposits (B5)
X
Geomorphic Position (D2)
Inundation Visible on Aerial Imagery (137)
Shallow Aquitard (D3)
X Water -Stained Leaves (B9)
_
Microtopographic Relief (D4)
Aquatic Fauna (B13)
FAC -Neutral Test (D5)
Field Observations:
Surface Water Present? Yes No X
Depth (inches):
Water Table Present? Yes X No
Depth (inches): 7
Wetland Hydrology
Present? Yes X No
Saturation Present? Yes X No _
Depth (inches): 6
(includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
Hydrology criteria met.

VEGETATION (Four Strata) - Use scientific names of plants.
Tree Stratum (Plot size: 20' Radius )
1. Acer rubrum (Maple,red)
2.
3.
4.
5.
6.
7.
8.
Sapling/Shrub Stratum (Plot size: 20' Radius )
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Herb Stratum
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
(Plot size: )
Woody Vine Stratum (Plot size: 20' Radius
Sampling Point 60,000 Wet
Dominance Test worksheet:
Absolute Dominant Indicator
% Cover Species? Status Number of Dominant Species
20 Y FAC That Are OBL, FACW, or FAC: 4 (A)
Total Number of Dominant
Species Across All Strata: 4 (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: 100 (A/B)
Prevalence Index worksheet:
20 = Total Cover Total % Cover of: Multiply by:
OBL species x 1 =
FACW species X 2 =
FAC species X 3 =
FACU species X4=
UPL species X 5 =
Column Totals: (A) (B)
0 = Total Cover
0 = Total Cover
1. Lonicera japonica (Honeysuckle,japanese)
5
Y FAC
2. Smilax rotundifolia (Greenbrier,common)
2.5
Y FAC
3. Vitis rotundifolia (Grape, muscadine)
2.5
Y FAC
4.
5.
6.
10
= Total Cover
Remarks: (Include photo numbers here or on a separate sheet.)
Prevalence Index = B/A =
ydrophytic Vegetation Indicators:
_ 1 - Rapid Test for Hydrophytic Vegetation
X 2 - Dominance Test is > 50%
_ 3 - Prevalence Test is <_ 3.0'
_4 - Morphological Adaptations' (Provide supporting
data in Remarks or on a separate sheet)
Problematic Hydrophytic Vegetation' (Explain)
Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Definitions of Vegetation Strata:
Tree -Woody plants, excluding vines, 3 in. (7.6 cm)
or more in diameter at breast height (DBH),
regardless of height.
Sapling/Shrub - Woody plants, excluding vines, less
than 3 in. DBH and greater than 3.28 ft (1 m) tall.
Herb - All herbaceous (non -woody) plants, regardless
of size, and woody plants less than 3.28 ft tall.
Woody vine - All woody vines greater than 3.28 ft in
height.
Hydrophytic
Vegetation
Present? Yes X No

SOIL
Sampling Point: 60,000 Wet
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth Matrix
Redox Features
(inches) Color (moist) %
Color (moist) % Tye Loc2 Texture Remarks
0-3 10YR5/2 90
7.5YR4/6 10 C M Silt Loam
3-12+ 10YR5/1 60
7.5YR4/6 40 C M Silty Clay
'Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains.
2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators:
Indicators for Problematic Hydric Soils':
Histosol (Al)
Dark Surface (S7)
2 cm Muck (A10) (MLRA 147)
Histic Epipedon (A2)
Polyvalue Below Surface (S8) (MLRA 147, 148)
Coast Prairie Redox (A16)
Black Histic (A3)
Thin Dark Suface (S9) (MLRA 147, 148)
(MLRA 147, 148)
Hydrogen Sulfide (A4)
Loamy Gleyed Matrix (F2)
Piedmont Floodplain Soils (F19)
Stratified Layers (A5)
X Depleted Matrix (F3)
(MLRA 136, 147)
2 cm Muck (A10) (LRR N)
Redox Dark Surface (F6)
Red Parent Material (TF2)
Depleted Below Dark Surface (A11)
Depleted Dark Surface (F7)
Very Shallow Dark Surface (TF1 2)
Thick Dark Surface (Al2)
Redox Depressions (F8)
Other (Explain in Remarks)
Sandy Mucky Mineral (S1) (LRR N,
Iron Manganese Masses (F12) (LRR N,
MLRA 147, 148)
MLRA 136)
Sandy Gleyed Matrix (s4)
Sandy Redox (S5)
Umbric Surface (F13) (MLRA 136, 122)
Piedmont Floodplain Soils (F19) (MLRA 148)
31ndicators of Hydrophytic vegetation and
wetland hydrology must be present, unless
Stripped Matrix (S6)
disturbed or problematic.
Restrictive Layer (if observed):
Type:
Depth (inches):
Hydric Soil Present?
Yes X No
Remarks:
Hydric Soil criteria met (F3 depleted matrix).

WETLAND DETERMINATION DATA FORM — Eastern Mountains and Piedmont
Project/Site: WCPSS M-16 City/County: Wake Sampling Date: Feb 11, 2016
Applicant/Owner: Wake County Public School System State: NC Sampling Point: 70,000 Up
Investigator(s): Greg Price Section, Township, Range: Cary
Landform (hillslope, terrace, etc.) terrace Local relief (concave, convex, none): none
Slope (%): 0-2 Lat: 35.857414 Long: -78.901604 Datum: NAD83
Soil Map Unit Name: WyA— Worsham sandy loam, 0 to 3% slopes NWI Classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks.)
Are Vegetation Soil or Hydrology significantly disturbed? Are "Normal Circumstances" present? Yes X
Are Vegetation Soil or Hydrology naturally problematic? (If needed, explain any answers in Remarks.)
No
JUMIVIAKY UI' PIIVUINkib — Attacn site map snowing sa piing point locations, transects, Important TeatureS, etc.
Hydrophytic Vegetation Present? Yes No X
Is the Sampled Area
Hydric Soil Present? Yes No X within a Wetland? Yes No X
Wetland Hydrology Present? Yes No X
Remarks:
Represents upland data point for Wetland 80,000 as well. Taken 15 feet west of flag 80,001
HYDROLOGY
Wetland Hydrology Indicators:
Secondary Indicators (minimum of two required)
Primary Indicators (minimum of one is required; check all that apply)
Surface Soil Cracks (B6)
Surface Water (Al)
_
True Aquatic Plants (1314)
Sparsely Vegetated Concave Surface (B8)
High Water Table (A2)
Hydrogen Sulfide Odor (Cl)
Drainage Patterns (B10)
Saturation (A3)
Oxidized Rhizospheres on Living Roots (C3)
Moss Trim Lines (B16)
Water Marks (B1)
Presence of Reduced Iron (C4)
Dry -Season Water Table (C2)
_ Sediment Deposits (B2)
_ Recent Iron Reduction in Tilled Soils (C6) _
Crayfish Burrows (C8)
Drift Deposits (133)
Thin Muck Surface (C7)
Saturation Visible on Aerial Imagery (C9)
Algal Mat or Crust (B4)
Other (Explain in Remarks)
Stunted or Stressed Plants (D1)
Iron Deposits (B5)
Geomorphic Position (D2)
Inundation Visible on Aerial Imagery (137)
Shallow Aquitard (D3)
_ Water -Stained Leaves (B9)
_
Microtopographic Relief (D4)
Aquatic Fauna (B13)
FAC -Neutral Test (D5)
Field Observations:
Surface Water Present? Yes No X
Depth (inches):
Water Table Present? Yes No X
Depth (inches):
Wetland Hydrology
Present? Yes No X
Saturation Present? Yes _ No X
Depth (inches):
(includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
Does not meet hydrology criteria.

VEGETATION (Four Strata) - Use scientific names of plants.
Tree Stratum (Plot size: 15' Radius )
1. Quercus alba (Oak,white)
2. Liquidambar styraciflua (Gum,sweet)
3. Pinus taeda (Pine,loblolly)
4.
5.
6.
7.
8.
Sapling/Shrub Stratum (Plot size: 15' Radius
Absolute Dominant Indicator
% Cover Species? Status
50 Y FACU
30 Y FAC
10 FAC
90 = Total Cover
1.
Ilex opaca (Holly,american)
5
Y
FAC
2.
Juniperus virginiana (Cedar,eastern red)
5
Y
FACU
3.
Quercus falcata (Oak,southern red)
5
Y
FACU
4.
Acer rubrum (Maple,red)
2.5
OBL species 0
FAC
5.
Liriodendron tulipifera (Tree,tulip)
2
X 3 = 148.5
FAC
6.
UPL species 0
X 5 = 0
Column Totals: 109.5
(A) 388.5 (B)
7.
8.
9.
10.
19.5
= Total Cover
Herb Stratum (Plot size
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
Woody Vine Stratum (Plot size: )
1.
2.
3.
4.
5.
6.
0 = Total Cover
0 = Total Cover
Remarks: (Include photo numbers here or on a separate sheet.)
Does not meet hydrophytic vegetation criteria.
Sampling Point 70,000 Up
Dominance Test worksheet:
Number of Dominant Species
That Are OBL, FACW, or FAC:
2 (A)
Total Number of Dominant
Species Across All Strata:
5 (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC:
40 (A/B)
Prevalence Index worksheet:
Total % Cover of:
Multiply by:
OBL species 0
x 1 = 0
FACW species 0
X 2 = 0
FAC species 49.5
X 3 = 148.5
FACU species 60
X4= 240
UPL species 0
X 5 = 0
Column Totals: 109.5
(A) 388.5 (B)
Prevalence Index = B/A = 3.55
Hydrophytic Vegetation Indicators:
1 - Rapid Test for Hydrophytic Vegetation
2 - Dominance Test is > 50%
3 - Prevalence Test is <_ 3.0'
4 - Morphological Adaptations' (Provide supporting
data in Remarks or on a separate sheet)
Problematic Hydrophytic Vegetation' (Explain)
'Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Definitions of Vegetation Strata:
Tree -Woody plants, excluding vines, 3 in. (7.6 cm)
or more in diameter at breast height (DBH),
regardless of height.
Sapling/Shrub - Woody plants, excluding vines, less
than 3 in. DBH and greater than 3.28 ft (1 m) tall.
Herb - All herbaceous (non -woody) plants, regardless
of size, and woody plants less than 3.28 ft tall.
Woody vine - All woody vines greater than 3.28 ft in
height.
Hydrophytic
Vegetation
Present? Yes No X

SOIL
Sampling Point: 70,000 Up
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth Matrix
Redox Features
(inches) Color (moist) %
Color (moist) % Tye Loc2 Texture Remarks
0-6 10YR5/6 100
N/A N/A Silty Clay
6-12+ 10YR5/4 100
N/A N/A Loam
'Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains.
2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators:
Indicators for Problematic Hydric Soils':
Histosol (Al)
Dark Surface (S7)
2 cm Muck (A10) (MLRA 147)
Histic Epipedon (A2)
Polyvalue Below Surface (S8) (MLRA 147, 148)
Coast Prairie Redox (A16)
Black Histic (A3)
Thin Dark Suface (S9) (MLRA 147, 148)
(MLRA 147, 148)
Hydrogen Sulfide (A4)
Loamy Gleyed Matrix (F2)
Piedmont Floodplain Soils (F19)
Stratified Layers (A5)
Depleted Matrix (F3)
(MLRA 136, 147)
2 cm Muck (A10) (LRR N)
Redox Dark Surface (F6)
Red Parent Material (TF2)
Depleted Below Dark Surface (A11)
Depleted Dark Surface (F7)
Very Shallow Dark Surface (TF1 2)
Thick Dark Surface (Al2)
Redox Depressions (F8)
Other (Explain in Remarks)
Sandy Mucky Mineral (S1) (LRR N,
Iron Manganese Masses (F12) (LRR N,
MLRA 147, 148)
MLRA 136)
Sandy Gleyed Matrix (s4)
Sandy Redox (S5)
Umbric Surface (F13) (MLRA 136, 122)
Piedmont Floodplain Soils (F19) (MLRA 148)
31ndicators of Hydrophytic vegetation and
wetland hydrology must be present, unless
Stripped Matrix (S6)
disturbed or problematic.
Restrictive Layer (if observed):
Type:
Depth (inches):
Hydric Soil Present?
Yes No X
Remarks:
Does not meet hydric soil criteria.

WETLAND DETERMINATION DATA FORM — Eastern Mountains and Piedmont
Project/Site: WCPSS M-16 City/County: Wake Sampling Date: Feb 11, 2016
Applicant/Owner: Wake County Public School System State: NC Sampling Point: 70,000 Wet
Investigator(s): Greg Price Section, Township, Range: Cary
Landform (hillslope, terrace, etc.) depression Local relief (concave, convex, none): concave
Slope (%): 0-2 Lat: 35.857323 Long: -78.901484 Datum: NAD83
Soil Map Unit Name: WyA —Worsham sandy loam, 0 to 3% slopes NWI Classification: PF01A
Are climatic / hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks.)
Are Vegetation Soil or Hydrology significantly disturbed? Are "Normal Circumstances" present? Yes
Are Vegetation Soil or Hydrology naturally problematic? (If needed, explain any answers in Remarks.)
X No
JUMIVIAKT UI' PIIVUINkib — ATtacn size map snoWlna sammina DOlnt locations. Transects. ImDortant Teatures. etc.
Hydrophytic Vegetation Present? Yes X No
Is the Sampled Area
Hydric Soil Present? Yes X No within a Wetland? Yes X No
Wetland Hydrology Present? Yes X No
Remarks:
Represents Wetland 80,000 data point as well. Wetlands 70,000 and 80,000 are separated by sewerline easement. Prior to sewerline easement,
they were most likely part of same wetland system.
HYDROLOGY
Wetland Hydrology Indicators:
Secondary Indicators (minimum of two required)
Primary Indicators (minimum of one is required; check all that apply)
Surface Soil Cracks (B6)
Surface Water (Al)
_
True Aquatic Plants (1314)
Sparsely Vegetated Concave Surface (B8)
X High Water Table (A2)
Hydrogen Sulfide Odor (Cl) X
Drainage Patterns (1310)
X Saturation (A3)
Oxidized Rhizospheres on Living Roots (C3) X
Moss Trim Lines (1316)
Water Marks (B1)
Presence of Reduced Iron (C4)
Dry -Season Water Table (C2)
_ Sediment Deposits (B2)
_ Recent Iron Reduction in Tilled Soils (C6) _
Crayfish Burrows (C8)
Drift Deposits (133)
Thin Muck Surface (C7)
Saturation Visible on Aerial Imagery (C9)
Algal Mat or Crust (134)
Other (Explain in Remarks)
Stunted or Stressed Plants (D1)
Iron Deposits (B5)
X
Geomorphic Position (D2)
Inundation Visible on Aerial Imagery (137)
Shallow Aquitard (D3)
X Water -Stained Leaves (B9)_
Microtopographic Relief (D4)
Aquatic Fauna (B13)
X
FAC -Neutral Test (D5)
Field Observations:
Surface Water Present? Yes No X
Depth (inches):
Water Table Present? Yes X No
Depth (inches): 6
Wetland Hydrology
Present? Yes X No
Saturation Present? Yes X No
Depth (inches): 4
_
(includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
Hydrology criteria met. Pondedness of 0-1" nearby.

VEGETATION (Four Strata) - Use scientific names of plants.
Tree Stratum (Plot size: 20' Radius )
1. Acer rubrum (Maple,red)
2. Liquidambar styraciflua (Gum,sweet)
3. Pinus taeda (Pine,loblolly)
4.
5.
6.
7.
8.
Absolute Dominant Indicator
% Cover Species? Status
30 Y FAC
20 Y FAC
20 Y FAC
70 = Total Cover
Sapling/Shrub Stratum (Plot size: 29 Radius )
1. Acer rubrum (Maple,red) 10 Y FAC
2. Quercus phellos (Oak,willow) 2 FACW
3.
4.
5.
6.
7.
8.
9.
10.
Herb Stratum
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
(Plot size: )
12 = Total Cover
0 = Total Cover
Woody Vine Stratum (Plot size: 29 Radius )
1. Smilax rotundifolia (Greenbrier,common) 40 Y FAC
2.
3.
4.
5.
6.
40 = Total Cover
Remarks: (Include photo numbers here or on a separate sheet.)
Meets hydrophytic vegetation criteria.
Sampling Point 70,000 Wet
Dominance Test worksheet:
Number of Dominant Species
That Are OBL, FACW, or FAC: 5 (A)
Total Number of Dominant
Species Across All Strata: 5 (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: 100 (A/B)
Prevalence Index = B/A =
ydrophytic Vegetation Indicators:
_ 1 - Rapid Test for Hydrophytic Vegetation
X 2 - Dominance Test is > 50%
_ 3 - Prevalence Test is <_ 3.0'
_4 - Morphological Adaptations' (Provide supporting
data in Remarks or on a separate sheet)
Problematic Hydrophytic Vegetation' (Explain)
Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Definitions of Vegetation Strata:
Tree -Woody plants, excluding vines, 3 in. (7.6 cm)
or more in diameter at breast height (DBH),
regardless of height.
Sapling/Shrub - Woody plants, excluding vines, less
than 3 in. DBH and greater than 3.28 ft (1 m) tall.
Herb - All herbaceous (non -woody) plants, regardless
of size, and woody plants less than 3.28 ft tall.
Woody vine - All woody vines greater than 3.28 ft in
height.
Hydrophytic
Vegetation
Present? Yes X No
Prevalence Index worksheet:
Total % Cover of:
Multiply by:
OBL species
x 1 =
FACW species
X 2 =
FAC species
X 3 =
FACU species
X4=
UPL species
X 5 =
Column Totals:
(A) (B)
Prevalence Index = B/A =
ydrophytic Vegetation Indicators:
_ 1 - Rapid Test for Hydrophytic Vegetation
X 2 - Dominance Test is > 50%
_ 3 - Prevalence Test is <_ 3.0'
_4 - Morphological Adaptations' (Provide supporting
data in Remarks or on a separate sheet)
Problematic Hydrophytic Vegetation' (Explain)
Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Definitions of Vegetation Strata:
Tree -Woody plants, excluding vines, 3 in. (7.6 cm)
or more in diameter at breast height (DBH),
regardless of height.
Sapling/Shrub - Woody plants, excluding vines, less
than 3 in. DBH and greater than 3.28 ft (1 m) tall.
Herb - All herbaceous (non -woody) plants, regardless
of size, and woody plants less than 3.28 ft tall.
Woody vine - All woody vines greater than 3.28 ft in
height.
Hydrophytic
Vegetation
Present? Yes X No

SOIL
Sampling Point: 70,000 Wet
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth Matrix
Redox Features
(inches) Color (moist) %
Color (moist) % Tye Loc2 Texture Remarks
0-6 10YR4/3 85
10YR3/6 15 C M Silty Clay
6-12+ 10YR5/1 70
7.5YR4/6 30 C M Silty Clay
'Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains.
2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators:
Indicators for Problematic Hydric Soils':
Histosol (Al)
Dark Surface (S7)
2 cm Muck (A10) (MLRA 147)
Histic Epipedon (A2)
Polyvalue Below Surface (S8) (MLRA 147, 148)
Coast Prairie Redox (A16)
Black Histic (A3)
Thin Dark Suface (S9) (MLRA 147, 148)
(MLRA 147, 148)
Hydrogen Sulfide (A4)
Loamy Gleyed Matrix (F2)
Piedmont Floodplain Soils (F19)
Stratified Layers (A5)
X Depleted Matrix (F3)
(MLRA 136, 147)
2 cm Muck (A10) (LRR N)
Redox Dark Surface (F6)
Red Parent Material (TF2)
Depleted Below Dark Surface (A11)
Depleted Dark Surface (F7)
Very Shallow Dark Surface (TF1 2)
Thick Dark Surface (Al2)
Redox Depressions (F8)
Other (Explain in Remarks)
Sandy Mucky Mineral (S1) (LRR N,
Iron Manganese Masses (F12) (LRR N,
MLRA 147, 148)
MLRA 136)
Sandy Gleyed Matrix (s4)
Sandy Redox (S5)
Umbric Surface (F13) (MLRA 136, 122)
Piedmont Floodplain Soils (F19) (MLRA 148)
31ndicators of Hydrophytic vegetation and
wetland hydrology must be present, unless
Stripped Matrix (S6)
disturbed or problematic.
Restrictive Layer (if observed):
Type:
Depth (inches):
Hydric Soil Present?
Yes X No
Remarks:
Hydric Soil criteria met (F3 -depleted matrix).

WETLAND DETERMINATION DATA FORM — Eastern Mountains and Piedmont
Project/Site: WCPSS M-16 City/County: Wake Sampling Date: Feb 11, 2016
Applicant/Owner: Wake County Public School System State: NC Sampling Point: 90,000 Up
Investigator(s): Greg Price Section, Township, Range: Cary
Landform (hillslope, terrace, etc.) terrace Local relief (concave, convex, none): none
Slope (%): 0 Lat: 35.856576 Long: -78.904208 Datum: NAD83
Soil Map Unit Name: WsE - White Store sandy loam, 10 to 20% slope NWI Classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks.)
Are Vegetation Soil or Hydrology significantly disturbed? Are "Normal Circumstances" present? Yes X
Are Vegetation Soil or Hydrology naturally problematic? (If needed, explain any answers in Remarks.)
No
JUMIVIAKY UI' PIIVUINkib — Attacn site map snowing sa piing point locations, transects, Important TeatureS, etc.
Hydrophytic Vegetation Present? Yes X No
Is the Sampled Area
Hydric Soil Present? Yes No X within a Wetland? Yes No X
Wetland Hydrology Present? Yes No X
Remarks:
Upland data point for Wetland 40,000 as well. Taken on berm between Wetlands 40,000 and 90,000
HYDROLOGY
Wetland Hydrology Indicators:
Secondary Indicators (minimum of two required)
Primary Indicators (minimum of one is required; check all that apply)
Surface Soil Cracks (B6)
Surface Water (Al)
_
True Aquatic Plants (1314)
Sparsely Vegetated Concave Surface (B8)
High Water Table (A2)
Hydrogen Sulfide Odor (Cl)
Drainage Patterns (B10)
Saturation (A3)
Oxidized Rhizospheres on Living Roots (C3)
Moss Trim Lines (B16)
Water Marks (B1)
Presence of Reduced Iron (C4)
Dry -Season Water Table (C2)
_ Sediment Deposits (B2)
_ Recent Iron Reduction in Tilled Soils (C6) _
Crayfish Burrows (C8)
Drift Deposits (133)
Thin Muck Surface (C7)
Saturation Visible on Aerial Imagery (C9)
Algal Mat or Crust (B4)
Other (Explain in Remarks)
Stunted or Stressed Plants (D1)
Iron Deposits (B5)
Geomorphic Position (D2)
Inundation Visible on Aerial Imagery (137)
Shallow Aquitard (D3)
_ Water -Stained Leaves (B9)
_
Microtopographic Relief (D4)
Aquatic Fauna (B13)
FAC -Neutral Test (D5)
Field Observations:
Surface Water Present? Yes No X
Depth (inches):
Water Table Present? Yes No X
Depth (inches):
Wetland Hydrology
Present? Yes No X
Saturation Present? Yes _ No X
Depth (inches):
(includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
Does not meet hydrology criteria

VEGETATION (Four Strata) - Use scientific names of plants.
Tree Stratum (Plot size: 5' x 20' plot )
1. Acer rubrum (Maple,red)
2. Liquidambar styraciflua (Gum,sweet)
3. Juniperus virginiana (Cedar,eastern red)
4.
5.
6.
7.
8.
Sapling/Shrub Stratum (Plot size: 5'x 20' plot )
1. Acer rubrum (Maple,red)
2.
3.
4.
5.
6.
7.
8.
9.
10.
Herb Stratum
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
(Plot size: )
Absolute Dominant Indicator
% Cover Species? Status
40 Y FAC
30 Y FAC
5 FACU
75 = Total Cover
10 Y FAC
10 = Total Cover
0 = Total Cover
Woody Vine Stratum (Plot size: 5' x 20' plot )
1. Smilax rotundifolia (Greenbrier,common) 20 Y FAC
2.
3.
4.
5.
6.
20 = Total Cover
Remarks: (Include photo numbers here or on a separate sheet.)
Meets hydrophytic vegetation criteria.
Sampling Point 90,000 Up
Dominance Test worksheet:
Number of Dominant Species
That Are OBL, FACW, or FAC: 4 (A)
Total Number of Dominant
Species Across All Strata: 4 (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: 100 (A/B)
Prevalence Index = B/A =
ydrophytic Vegetation Indicators:
_ 1 - Rapid Test for Hydrophytic Vegetation
X 2 - Dominance Test is > 50%
_ 3 - Prevalence Test is <_ 3.0'
_4 - Morphological Adaptations' (Provide supporting
data in Remarks or on a separate sheet)
Problematic Hydrophytic Vegetation' (Explain)
Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Definitions of Vegetation Strata:
Tree -Woody plants, excluding vines, 3 in. (7.6 cm)
or more in diameter at breast height (DBH),
regardless of height.
Sapling/Shrub - Woody plants, excluding vines, less
than 3 in. DBH and greater than 3.28 ft (1 m) tall.
Herb - All herbaceous (non -woody) plants, regardless
of size, and woody plants less than 3.28 ft tall.
Woody vine - All woody vines greater than 3.28 ft in
height.
Hydrophytic
Vegetation
Present? Yes X No
Prevalence Index worksheet:
Total % Cover of:
Multiply by:
OBL species
x 1 =
FACW species
X 2 =
FAC species
X 3 =
FACU species
X4=
UPL species
X 5 =
Column Totals:
(A) (B)
Prevalence Index = B/A =
ydrophytic Vegetation Indicators:
_ 1 - Rapid Test for Hydrophytic Vegetation
X 2 - Dominance Test is > 50%
_ 3 - Prevalence Test is <_ 3.0'
_4 - Morphological Adaptations' (Provide supporting
data in Remarks or on a separate sheet)
Problematic Hydrophytic Vegetation' (Explain)
Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Definitions of Vegetation Strata:
Tree -Woody plants, excluding vines, 3 in. (7.6 cm)
or more in diameter at breast height (DBH),
regardless of height.
Sapling/Shrub - Woody plants, excluding vines, less
than 3 in. DBH and greater than 3.28 ft (1 m) tall.
Herb - All herbaceous (non -woody) plants, regardless
of size, and woody plants less than 3.28 ft tall.
Woody vine - All woody vines greater than 3.28 ft in
height.
Hydrophytic
Vegetation
Present? Yes X No

SOIL
Sampling Point: 90,000 Up
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth Matrix
Redox Features
(inches) Color (moist) %
Color (moist) % Tye Loc2 Texture
Remarks
0-2 10YR3/2 100
N/A N/A Loam
2-7 10YR5/4 60
10YR5/8 40 C M Loam
7-12 10YR5/4 100
N/A N/A Sandy
'Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains.
2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators:
Indicators
for Problematic Hydric Soils':
Histosol (Al)
Dark Surface (S7)
2 cm Muck (A10) (MLRA 147)
Histic Epipedon (A2)
Polyvalue Below Surface (S8) (MLRA 147, 148)
Coast Prairie Redox (A16)
Black Histic (A3)
Thin Dark Suface (S9) (MLRA 147, 148)
(MLRA 147, 148)
Hydrogen Sulfide (A4)
Loamy Gleyed Matrix (F2)
Piedmont Floodplain Soils (F19)
Stratified Layers (A5)
Depleted Matrix (F3)
(MLRA 136, 147)
2 cm Muck (A10) (LRR N)
Redox Dark Surface (F6)
Red Parent Material (TF2)
Depleted Below Dark Surface (A11)
Depleted Dark Surface (F7)
Very Shallow Dark Surface (TF1 2)
Thick Dark Surface (Al2)
Redox Depressions (F8)
Other (Explain in Remarks)
Sandy Mucky Mineral (S1) (LRR N,
Iron Manganese Masses (F12) (LRR N,
MLRA 147, 148)
MLRA 136)
Sandy Gleyed Matrix (s4)
Sandy Redox (S5)
Umbric Surface (F13) (MLRA 136, 122)
31ndicators of Hydrophytic vegetation and
Piedmont Floodplain Soils (F19) (MLRA 148) wetland hydrology must be present, unless
Stripped Matrix (S6)
disturbed
or problematic.
Restrictive Layer (if observed):
Type:
Depth (inches):
Hydric Soil Present?
Yes No X
Remarks:
Does not meet hydric soil criteria.

WETLAND DETERMINATION DATA FORM — Eastern Mountains and Piedmont
Project/Site: WCPSS M-16 City/County: Wake Sampling Date: Feb 11, 2016
Applicant/Owner: Wake County Public School System State: NC Sampling Point: 90,000 Wet
Investigator(s): Greg Price Section, Township, Range: Cary
Landform (hillslope, terrace, etc.) depression Local relief (concave, convex, none): concave
Slope (%): 0-2 Lat: 35.856556 Long: -78.904123 Datum: NAD83
Soil Map Unit Name: WsE - White Store sandy loam, 10 to 20% slope NWI Classification: PF01A estimated — not mt
Are climatic / hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks.)
Are Vegetation Soil or Hydrology significantly disturbed? Are "Normal Circumstances" present? Yes X
Are Vegetation Soil or Hydrology naturally problematic? (If needed, explain any answers in Remarks.)
No
JUMIVIAKY UI' PIIVUINkib — Attacn site map snowing sa piing point locations, transects, Important TeatureS, etc.
Hydrophytic Vegetation Present? Yes X No
Is the Sampled Area
Hydric Soil Present? Yes X No within a Wetland? Yes X No
Wetland Hydrology Present? Yes X No
Remarks:
Headwater forest along the fringe of pond
HYDROLOGY
Wetland Hydrology Indicators:
Secondary Indicators (minimum of two required)
Primary Indicators (minimum of one is required; check all that apply)
Surface Soil Cracks (B6)
Surface Water (Al)
_
True Aquatic Plants (1314)
Sparsely Vegetated Concave Surface (B8)
X High Water Table (A2)
Hydrogen Sulfide Odor (Cl)
Drainage Patterns (B10)
X Saturation (A3)
Oxidized Rhizospheres on Living Roots (C3)
Moss Trim Lines (B16)
Water Marks (B1)
Presence of Reduced Iron (C4)
Dry -Season Water Table (C2)
_ Sediment Deposits (B2)
_ Recent Iron Reduction in Tilled Soils (C6) _
Crayfish Burrows (C8)
Drift Deposits (133)
Thin Muck Surface (C7)
Saturation Visible on Aerial Imagery (C9)
Algal Mat or Crust (B4)
Other (Explain in Remarks)
Stunted or Stressed Plants (D1)
Iron Deposits (B5)
X
Geomorphic Position (D2)
Inundation Visible on Aerial Imagery (137)
Shallow Aquitard (D3)
X Water -Stained Leaves (B9)_
Microtopographic Relief (D4)
Aquatic Fauna (B13)
X
FAC -Neutral Test (D5)
Field Observations:
Surface Water Present? Yes No X
Depth (inches):
Water Table Present? Yes X No
Depth (inches): 4
Wetland Hydrology
Present? Yes X No
Saturation Present? Yes X No _
Depth (inches): 0
(includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
Ponded near by. Meets hydrology criteria.

VEGETATION (Four Strata) - Use scientific names of plants.
Sampling Point 90,000 Wet
Remarks: (Include photo numbers here or on a separate sheet.)
Sphagnum moss was present. Hydrophytic vegetation criteria met
Dominance Test worksheet:
Absolute
Dominant Indicator
Tree Stratum (Plot size: 20' Radius )
% Cover
Species?
Status
Number of Dominant Species
1.
Liquidambar styraciflua (Gum,sweet)
30
Y
FAC
That Are OBL, FACW, or FAC: 7 (A)
Total Number of Dominant
Species Across All Strata: 7 (B)
2. Acer rubrum (Maple,red) 10 Y FAC
3.
4
5.
6
Percent of Dominant Species
That Are OBL, FACW, or FAC: 100 (A/B)
7.
8.
Prevalence Index worksheet:
Total % Cover of: Multiply by:
40 = Total Cover
OBL species x 1 =
Sapling/Shrub Stratum (Plot size: 29 Radius )
FACW species X 2 =
1.
Ligustrum sinense (Privet,chinese)
20
Y
FAC
FAC species X 3 =
FACU species X4=
2. Liquidambar styraciflua (Gum,sweet) 10 Y FAC
3.
UPL species X 5 =
Column Totals: (A) (B)
Prevalence Index = B/A =
4
5.
6.
7.
8.
Hydrophytic Vegetation Indicators:
9.
1 - Rapid Test for Hydrophytic Vegetation
10.
X 2 - Dominance Test is > 50%
30
= Total Cover
3 - Prevalence Test is <_ 3.0'
Herb
Stratum (Plot size: 29 Radius )
4 - Morphological Adaptations' (Provide supporting
data in Remarks or on a separate sheet)
1.
Chasmanthium laxum (Spikegrass,slender)
15
Y
FACW
Problematic Hydrophytic Vegetation' (Explain)
'Indicators of hydric soil and wetland hydrology must
2
3.
4
be present, unless disturbed or problematic.
5.
Definitions of Vegetation Strata:
6.
7.
Tree -Woody plants, excluding vines, 3 in. (7.6 cm)
or more in diameter at breast height (DBH),
8.
g.
10.
regardless of height.
11.
Sapling/Shrub - Woody plants, excluding vines, less
12.
than 3 in. DBH and greater than 3.28 ft (1 m) tall.
15 = Total Cover
Herb - All herbaceous (non -woody) plants, regardless
Woody Vine Stratum (Plot size: 29 Radius )
of size, and woody plants less than 3.28 ft tall.
1.
Lonicera japonica (Honeysuckle,japanese)
20
Y
FAC
Woody vine - All woody vines greater than 3.28 ft in
height.
2. Smilax rotundifolia (Greenbrier,common) 5 Y FAC
3.
4.
Hydrophytic
5
Vegetation
Present? Yes X No
6.
25 = Total Cover
Remarks: (Include photo numbers here or on a separate sheet.)
Sphagnum moss was present. Hydrophytic vegetation criteria met

SOIL
Sampling Point: 90,000 Wet
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth Matrix
Redox Features
(inches) Color (moist) %
Color (moist) % Tye Loc2 Texture Remarks
0-2 10YR5/2 100
N/A N/A Silty Clay
2-12+ 10YR5/2 85
10YR4/6 15 C M Silty Clay
'Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains.
2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators:
Indicators for Problematic Hydric Soils':
Histosol (Al)
Dark Surface (S7)
2 cm Muck (A10) (MLRA 147)
Histic Epipedon (A2)
Polyvalue Below Surface (S8) (MLRA 147, 148)
Coast Prairie Redox (A16)
Black Histic (A3)
Thin Dark Suface (S9) (MLRA 147, 148)
(MLRA 147, 148)
Hydrogen Sulfide (A4)
Loamy Gleyed Matrix (F2)
Piedmont Floodplain Soils (F19)
Stratified Layers (A5)
X Depleted Matrix (F3)
(MLRA 136, 147)
2 cm Muck (A10) (LRR N)
Redox Dark Surface (F6)
Red Parent Material (TF2)
Depleted Below Dark Surface (A11)
Depleted Dark Surface (F7)
Very Shallow Dark Surface (TF1 2)
Thick Dark Surface (Al2)
Redox Depressions (F8)
Other (Explain in Remarks)
Sandy Mucky Mineral (S1) (LRR N,
Iron Manganese Masses (F12) (LRR N,
MLRA 147, 148)
MLRA 136)
Sandy Gleyed Matrix (s4)
Sandy Redox (S5)
Umbric Surface (F13) (MLRA 136, 122)
Piedmont Floodplain Soils (F19) (MLRA 148)
31ndicators of Hydrophytic vegetation and
wetland hydrology must be present, unless
Stripped Matrix (S6)
disturbed or problematic.
Restrictive Layer (if observed):
Type:
Depth (inches):
Hydric Soil Present?
Yes X No
Remarks:
Hydric Soil criteria met (F3 -depleted matrix).

WETLAND DETERMINATION DATA FORM — Eastern Mountains and Piedmont
Project/Site: WCPSS M-16 City/County: Wake Sampling Date: Feb 18, 2016
Applicant/Owner: Wake County Public School System State: NC Sampling Point: 100,000 Up
Investigator(s): Greg Price Section, Township, Range: Cary
Landform (hillslope, terrace, etc.) hillslope Local relief (concave, convex, none): convex
Slope (%): 0-2 Lat: 35.857088 Long: -78.899452 Datum: NAD83
Soil Map Unit Name: CrC2 — Creedmoor sandy loam, 6 to 10% slopes, moderately eroded NWI Classification:
Are climatic / hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks.)
Are Vegetation Soil or Hydrology significantly disturbed? Are "Normal Circumstances" present? Yes X
Are Vegetation Soil or Hydrology naturally problematic? (If needed, explain any answers in Remarks.)
No
JUMIVIAKY UI' PIIVUINkib — Attacn site map snowing sa piing point locations, transects, Important TeatureS, etc.
Hydrophytic Vegetation Present? Yes X No
Is the Sampled Area
Hydric Soil Present? Yes No X within a Wetland? Yes No X
Wetland Hydrology Present? Yes No X
Remarks:
Represents upland point for both Wetlands 100,000 and 110,000. Taken 8 feet upslope of Flag 100,007 facing wetland
HYDROLOGY
Wetland Hydrology Indicators:
Secondary Indicators (minimum of two required)
Primary Indicators (minimum of one is required; check all that apply)
Surface Soil Cracks (B6)
Surface Water (Al)
_
True Aquatic Plants (1314)
Sparsely Vegetated Concave Surface (B8)
High Water Table (A2)
Hydrogen Sulfide Odor (Cl)
Drainage Patterns (B10)
Saturation (A3)
Oxidized Rhizospheres on Living Roots (C3)
Moss Trim Lines (B16)
Water Marks (B1)
Presence of Reduced Iron (C4)
Dry -Season Water Table (C2)
_ Sediment Deposits (B2)
_ Recent Iron Reduction in Tilled Soils (C6) _
Crayfish Burrows (C8)
Drift Deposits (133)
Thin Muck Surface (C7)
Saturation Visible on Aerial Imagery (C9)
Algal Mat or Crust (B4)
Other (Explain in Remarks)
Stunted or Stressed Plants (D1)
Iron Deposits (B5)
Geomorphic Position (D2)
Inundation Visible on Aerial Imagery (137)
Shallow Aquitard (D3)
_ Water -Stained Leaves (B9)
_
Microtopographic Relief (D4)
Aquatic Fauna (B13)
FAC -Neutral Test (D5)
Field Observations:
Surface Water Present? Yes No X
Depth (inches):
Water Table Present? Yes No X
Depth (inches):
Wetland Hydrology
Present? Yes No X
Saturation Present? Yes No X
Depth (inches):
_
(includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
Does not meet wetland hydrology criteria.

VEGETATION (Four Strata) - Use scientific names of plants.
Sampling Point 100,000 Up
Remarks: (Include photo numbers here or on a separate sheet.)
Meets hydrophytic vegetation criteria.
Dominance Test worksheet:
Absolute Dominant Indicator
Tree Stratum (Plot size: 15'x 20' )
% Cover Species? Status
Number of Dominant Species
1. Pinus taeda (Pine,loblolly)
50 Y FAC
That Are OBL, FACW, or FAC: 2 (A)
Total Number of Dominant
Species Across All Strata: 3 (B)
2. Quercus falcata (Oak,southern red) 25 Y FACU
3.
4
5.
6
Percent of Dominant Species
That Are OBL, FACW, or FAC: 66.7 (A/B)
7.
8.
Prevalence Index worksheet:
Total % Cover of: Multiply by:
75 = Total Cover
OBL species x 1 =
Sapling/Shrub Stratum (Plot size: 15'x 20' )
FACW species X 2 =
1
FAC species X 3 =
FACU species X4=
2.
3.
UPL species X 5 =
Column Totals: (A) (B)
Prevalence Index = B/A =
4
5.
6.
7.
8.
Hydrophytic Vegetation Indicators:
9.
1 - Rapid Test for Hydrophytic Vegetation
10.
X 2 - Dominance Test is > 50%
0 = Total Cover
3 - Prevalence Test is <_ 3.0'
Herb Stratum (Plot size: 15' x 20' )
4 - Morphological Adaptations' (Provide supporting
data in Remarks or on a separate sheet)
1.
Problematic Hydrophytic Vegetation' (Explain)
'Indicators of hydric soil and wetland hydrology must
2
3.
4
be present, unless disturbed or problematic.
5.
Definitions of Vegetation Strata:
6.
7.
Tree -Woody plants, excluding vines, 3 in. (7.6 cm)
or more in diameter at breast height (DBH),
8.
g.
10.
regardless of height.
11.
Sapling/Shrub - Woody plants, excluding vines, less
12.
than 3 in. DBH and greater than 3.28 ft (1 m) tall.
0 = Total Cover
Herb - All herbaceous (non -woody) plants, regardless
Woody Vine Stratum (Plot size: 15'x 20' )
of size, and woody plants less than 3.28 ft tall.
1. Smilax rotundifolia (Greenbrier,common)
5 Y FAC
Woody vine - All woody vines greater than 3.28 ft in
height.
2.
3.
4.
Hydrophytic
5
Vegetation
Present? Yes X No
6.
5 = Total Cover
Remarks: (Include photo numbers here or on a separate sheet.)
Meets hydrophytic vegetation criteria.

SOIL
Sampling Point: 100,000 Up
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth Matrix
Redox Features
(inches) Color (moist) %
Color (moist) % Tye Loc2 Texture Remarks
0-5 10YR4/4 100
N/A N/A Silt Loam
5-12+ 10YR4/3 100
N/A N/A Loam
'Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains.
2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators:
Indicators for Problematic Hydric Soils':
Histosol (Al)
Dark Surface (S7)
2 cm Muck (A10) (MLRA 147)
Histic Epipedon (A2)
Polyvalue Below Surface (S8) (MLRA 147, 148)
Coast Prairie Redox (A16)
Black Histic (A3)
Thin Dark Suface (S9) (MLRA 147, 148)
(MLRA 147, 148)
Hydrogen Sulfide (A4)
Loamy Gleyed Matrix (F2)
Piedmont Floodplain Soils (F19)
Stratified Layers (A5)
Depleted Matrix (F3)
(MLRA 136, 147)
2 cm Muck (A10) (LRR N)
Redox Dark Surface (F6)
Red Parent Material (TF2)
Depleted Below Dark Surface (A11)
Depleted Dark Surface (F7)
Very Shallow Dark Surface (TF1 2)
Thick Dark Surface (Al2)
Redox Depressions (F8)
Other (Explain in Remarks)
Sandy Mucky Mineral (S1) (LRR N,
Iron Manganese Masses (F12) (LRR N,
MLRA 147, 148)
MLRA 136)
Sandy Gleyed Matrix (s4)
Sandy Redox (S5)
Umbric Surface (F13) (MLRA 136, 122)
Piedmont Floodplain Soils (F19) (MLRA 148)
31ndicators of Hydrophytic vegetation and
wetland hydrology must be present, unless
Stripped Matrix (S6)
disturbed or problematic.
Restrictive Layer (if observed):
Type:
Depth (inches):
Hydric Soil Present?
Yes No X
Remarks:
Does not meet hydric soil criteria.

WETLAND DETERMINATION DATA FORM — Eastern Mountains and Piedmont
Project/Site: WCPSS M-16 City/County: Wake Sampling Date: Feb 18, 2016
Applicant/Owner: Wake County Public School System State: NC Sampling Point: 100,000 wet
Investigator(s): Greg Price Section, Township, Range: Cary
Landform (hillslope, terrace, etc.) Depression Local relief (concave, convex, none): concave
Slope (%): 0-2 Lat: 35.857095 Long: -78.899417 Datum: NAD83
Soil Map Unit Name: CrC2 — Creedmoor sandy loam, 6 to 10% slopes, moderately eroded NWI Classification: PF01A estimated (not mapped)
Are climatic / hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks.)
Are Vegetation Soil or Hydrology significantly disturbed? Are "Normal Circumstances" present? Yes X No
Are Vegetation Soil or Hydrology naturally problematic? (If needed, explain any answers in Remarks.)
JUMIVIAKT UI' PIIVUINkib — ATtacn size map snoWlna sammina DOlnt locations. Transects. ImDortant Teatures. etc.
Hydrophytic Vegetation Present? Yes X No
Is the Sampled Area
Hydric Soil Present? Yes X No within a Wetland? Yes X No
Wetland Hydrology Present? Yes X No
Remarks:
Headwater Forest located in strong topographic crenulation. Feature is drained by ephemeral channel
HYDROLOGY
Wetland Hydrology Indicators:
Secondary Indicators (minimum of two required)
Primary Indicators (minimum of one is required; check all that apply) _
Surface Soil Cracks (B6)
X Surface Water (Al)
True Aquatic Plants (1314)
Sparsely Vegetated Concave Surface (B8)
X High Water Table (A2)
Hydrogen Sulfide Odor (Cl)
Drainage Patterns (B10)
X Saturation (A3)
Oxidized Rhizospheres on Living Roots (C3)
Moss Trim Lines (B16)
Water Marks (B1)
Presence of Reduced Iron (C4)
Dry -Season Water Table (C2)
_ Sediment Deposits (B2)
_ Recent Iron Reduction in Tilled Soils (C6) _
Crayfish Burrows (C8)
Drift Deposits (133)
Thin Muck Surface (C7)
Saturation Visible on Aerial Imagery (C9)
Algal Mat or Crust (B4)
Other (Explain in Remarks)
Stunted or Stressed Plants (D1)
Iron Deposits (B5)
X
Geomorphic Position (D2)
Inundation Visible on Aerial Imagery (137)
Shallow Aquitard (D3)
X Water -Stained Leaves (B9)
_
Microtopographic Relief (D4)
Aquatic Fauna (B13)
FAC -Neutral Test (D5)
Field Observations:
Surface Water Present? Yes X No
Depth (inches): 0-4
Water Table Present? Yes X No
Depth (inches): 0
Wetland Hydrology
Present? Yes X No
Saturation Present? Yes X No
Depth (inches): 0
_
(includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
Wetland hydrology criteria met.

VEGETATION (Four Strata) - Use scientific names of plants.
Entire
Tree Stratum (Plot size:boundary )
1. Acer rubrum (Maple,red)
2. Liquidambar styraciflua (Gum,sweet)
3.
4.
5.
6.
7.
8.
Entire
Sapling/Shrub Stratum (Plot size:boundary )
1. Acer rubrum (Maple,red)
2.
3.
4.
5.
6.
7.
8.
9.
10.
Herb Stratum
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
(Plot size: )
Absolute
Dominant
Indicator
% Cover
Species?
Status
50
Y
FAC
15
Y
FAC
65 = Total Cover
15 Y FAC
15 = Total Cover
0 = Total Cover
Entire
Woody Vine Stratum (Plot size:boundary )
1. Smilax rotundifolia (Greenbrier,common) 5 Y FAC
2.
3.
4.
5.
6.
5 = Total Cover
Remarks: (Include photo numbers here or on a separate sheet.)
Hydrophytic vegetation criteria met.
Sampling Point 100,000Wet
Dominance Test worksheet:
Number of Dominant Species
That Are OBL, FACW, or FAC: 4 (A)
Total Number of Dominant
Species Across All Strata: 4 (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: 100 (A/B)
Prevalence Index = B/A =
ydrophytic Vegetation Indicators:
_ 1 - Rapid Test for Hydrophytic Vegetation
X 2 - Dominance Test is > 50%
_ 3 - Prevalence Test is <_ 3.0'
X 4 - Morphological Adaptations' (Provide supporting
data in Remarks or on a separate sheet)
Problematic Hydrophytic Vegetation' (Explain)
Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Definitions of Vegetation Strata:
Tree -Woody plants, excluding vines, 3 in. (7.6 cm)
or more in diameter at breast height (DBH),
regardless of height.
Sapling/Shrub - Woody plants, excluding vines, less
than 3 in. DBH and greater than 3.28 ft (1 m) tall.
Herb - All herbaceous (non -woody) plants, regardless
of size, and woody plants less than 3.28 ft tall.
Woody vine - All woody vines greater than 3.28 ft in
height.
Hydrophytic
Vegetation
Present? Yes X No
Prevalence Index worksheet:
Total % Cover of:
Multiply by:
OBL species
x 1 =
FACW species
X 2 =
FAC species
X 3 =
FACU species
X4=
UPL species
X 5 =
Column Totals:
(A) (B)
Prevalence Index = B/A =
ydrophytic Vegetation Indicators:
_ 1 - Rapid Test for Hydrophytic Vegetation
X 2 - Dominance Test is > 50%
_ 3 - Prevalence Test is <_ 3.0'
X 4 - Morphological Adaptations' (Provide supporting
data in Remarks or on a separate sheet)
Problematic Hydrophytic Vegetation' (Explain)
Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Definitions of Vegetation Strata:
Tree -Woody plants, excluding vines, 3 in. (7.6 cm)
or more in diameter at breast height (DBH),
regardless of height.
Sapling/Shrub - Woody plants, excluding vines, less
than 3 in. DBH and greater than 3.28 ft (1 m) tall.
Herb - All herbaceous (non -woody) plants, regardless
of size, and woody plants less than 3.28 ft tall.
Woody vine - All woody vines greater than 3.28 ft in
height.
Hydrophytic
Vegetation
Present? Yes X No

SOIL
Sampling Point: 100,000 Wet
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth Matrix
Redox Features
(inches) Color (moist) %
Color (moist) % Tye Loc2 Texture Remarks
0-5 10YR5/3 70
10YR3/6 30 C M Silty Clay
5-12+ 10YR5/2 60
10YR3/6 40 C M Clay Loam
'Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains.
2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators:
Indicators for Problematic Hydric Soils':
Histosol (Al)
Dark Surface (S7)
2 cm Muck (A10) (MLRA 147)
Histic Epipedon (A2)
Polyvalue Below Surface (S8) (MLRA 147, 148)
Coast Prairie Redox (A16)
Black Histic (A3)
Thin Dark Suface (S9) (MLRA 147, 148)
(MLRA 147, 148)
Hydrogen Sulfide (A4)
Loamy Gleyed Matrix (F2)
Piedmont Floodplain Soils (F19)
Stratified Layers (A5)
X Depleted Matrix (F3)
(MLRA 136, 147)
2 cm Muck (A10) (LRR N)
Redox Dark Surface (F6)
Red Parent Material (TF2)
Depleted Below Dark Surface (A11)
Depleted Dark Surface (F7)
Very Shallow Dark Surface (TF1 2)
Thick Dark Surface (Al2)
Redox Depressions (F8)
Other (Explain in Remarks)
Sandy Mucky Mineral (S1) (LRR N,
Iron Manganese Masses (F12) (LRR N,
MLRA 147, 148)
MLRA 136)
Sandy Gleyed Matrix (s4)
Sandy Redox (S5)
Umbric Surface (F13) (MLRA 136, 122)
Piedmont Floodplain Soils (F19) (MLRA 148)
31ndicators of Hydrophytic vegetation and
wetland hydrology must be present, unless
Stripped Matrix (S6)
disturbed or problematic.
Restrictive Layer (if observed):
Type:
Depth (inches):
Hydric Soil Present?
Yes X No
Remarks:
Hydric Soil criteria (F3 -Depleted Matrix) met.

WETLAND DETERMINATION DATA FORM — Eastern Mountains and Piedmo510nt
Project/Site: WCPSS M-16 City/County: Wake Sampling Date: Feb 18, 2016
Applicant/Owner: Wake County Public School System State: NC Sampling Point: 110,000 Wet
Investigator(s): Greg Price Section, Township, Range: Cary
Landform (hillslope, terrace, etc.) Depression Local relief (concave, convex, none): concave
Slope (%): 0-2 Lat: 35.857510 Long: -78.900617 Datum: NAD83
Soil Map Unit Name: WsE —White Store sandy loam, 10 to 20% slope NWI Classification: PEM estimated (not mapped)
Are climatic / hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks.)
Are Vegetation Soil or Hydrology significantly disturbed? Are "Normal Circumstances" present? Yes X No
Are Vegetation Soil or Hydrology naturally problematic? (If needed, explain any answers in Remarks.)
JUMIVIAKT UI' PIIVUINkib — Attacn site map snowing sa piing point locations, transects, Important TeatureS, etc.
Hydrophytic Vegetation Present? Yes X No
Is the Sampled Area
Hydric Soil Present? Yes X No within a Wetland? Yes X No
Wetland Hydrology Present? Yes X No
Remarks:
Wetland is caused by seepage from pipe outlet of stormwater pond. The hydrology is causing severe erosion within the sewerline corridor. Wetland
is a non -tidal freshwater marsh.
HYDROLOGY
Wetland Hydrology Indicators:
Secondary Indicators (minimum of two required)
Primary Indicators (minimum of one is required; check all that apply)
Surface Soil Cracks (B6)
X Surface Water (Al)
_
True Aquatic Plants (1314)
Sparsely Vegetated Concave Surface (B8)
X High Water Table (A2)
Hydrogen Sulfide Odor (Cl)
Drainage Patterns (B10)
X Saturation (A3)
Oxidized Rhizospheres on Living Roots (C3)
Moss Trim Lines (B16)
Water Marks (B1)
Presence of Reduced Iron (C4)
Dry -Season Water Table (C2)
_ Sediment Deposits (B2)
_ Recent Iron Reduction in Tilled Soils (C6) _
Crayfish Burrows (C8)
Drift Deposits (133)
Thin Muck Surface (C7)
Saturation Visible on Aerial Imagery (C9)
Algal Mat or Crust (B4)
Other (Explain in Remarks)
Stunted or Stressed Plants (D1)
Iron Deposits (B5)
Geomorphic Position (D2)
Inundation Visible on Aerial Imagery (137)
Shallow Aquitard (D3)
_ Water -Stained Leaves (B9)_
Microtopographic Relief (D4)
Aquatic Fauna (B13)
X
FAC -Neutral Test (D5)
Field Observations:
Surface Water Present? Yes X No
Depth (inches): 0-3
Water Table Present? Yes X No
Depth (inches): 0
Wetland Hydrology
Present? Yes X No
Saturation Present? Yes X No _
Depth (inches): 0
(includes capillary fringe)
Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available:
Remarks:
Hydrology criteria met.

VEGETATION (Four Strata) - Use scientific names of plants.
Tree Stratum
1.
2.
3.
4.
5.
6.
7.
8.
Sampling Point 110,000Wet
Dominance Test worksheet:
Absolute Dominant Indicator
(Plot size: ) % Cover Species? Status Number of Dominant Species
That Are OBL, FACW, or FAC: (A)
Sapling/Shrub Stratum (Plot size
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
entire
Herb Stratum (Plot size:boundary )
1. Scirpus cyperinus (Wool -grass)
2. Juncus effusus (Rush,soft)
3. Sparganium americanum (Burreed,american)
4.
5.
6.
7.
8.
9.
10.
11.
12.
Woody Vine Stratum (Plot size
1.
2.
3.
4.
5.
6.
25
20
10
Total Number of Dominant
Species Across All Strata: (B)
Percent of Dominant Species
That Are OBL, FACW, or FAC: (A/B)
Prevalence Index worksheet:
= Total Cover
Total % Cover of:
Multiply by:
OBL species
x 1 =
FACW species
X 2 =
FAC species
X 3 =
FACU species
X4=
UPL species
X 5 =
Column Totals:
(A) (B)
= Total Cover
Y
Y
N
55 = Total Cover
= Total Cover
Remarks: (Include photo numbers here or on a separate sheet.)
Meets hydrophytic vegetation criteria.
Prevalence Index = B/A =
Hydrophytic Vegetation Indicators:
X 1 - Rapid Test for Hydrophytic Vegetation
X 2 - Dominance Test is > 50%
3 - Prevalence Test is <_ 3.0'
4 - Morphological Adaptations' (Provide supporting
OBL data in Remarks or on a separate sheet)
FACW Problematic Hydrophytic Vegetation' (Explain)
OBL
Indicators of hydric soil and wetland hydrology must
be present, unless disturbed or problematic.
Definitions of Vegetation Strata:
Tree -Woody plants, excluding vines, 3 in. (7.6 cm)
or more in diameter at breast height (DBH),
regardless of height.
Sapling/Shrub - Woody plants, excluding vines, less
than 3 in. DBH and greater than 3.28 ft (1 m) tall.
Herb - All herbaceous (non -woody) plants, regardless
of size, and woody plants less than 3.28 ft tall.
Woody vine - All woody vines greater than 3.28 ft in
height.
Hydrophytic
Vegetation
Present? Yes X No

SOIL
Sampling Point: 110,000 Wet
Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.)
Depth Matrix
Redox Features
(inches) Color (moist) %
Color (moist) % Tye Loc2 Texture Remarks
0-12+ 10YR4/2 55
10YR3/6 45 C M Clay
'Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains.
2Location: PL=Pore Lining, M=Matrix.
Hydric Soil Indicators:
Indicators for Problematic Hydric Soils':
Histosol (Al)
Dark Surface (S7)
2 cm Muck (A10) (MLRA 147)
Histic Epipedon (A2)
Polyvalue Below Surface (S8) (MLRA 147, 148)
Coast Prairie Redox (A16)
Black Histic (A3)
Thin Dark Suface (S9) (MLRA 147, 148)
(MLRA 147, 148)
Hydrogen Sulfide (A4)
Loamy Gleyed Matrix (F2)
Piedmont Floodplain Soils (F19)
Stratified Layers (A5)
X Depleted Matrix (F3)
(MLRA 136, 147)
2 cm Muck (A10) (LRR N)
Redox Dark Surface (F6)
Red Parent Material (TF2)
Depleted Below Dark Surface (A11)
Depleted Dark Surface (F7)
Very Shallow Dark Surface (TF1 2)
Thick Dark Surface (Al2)
Redox Depressions (F8)
Other (Explain in Remarks)
Sandy Mucky Mineral (S1) (LRR N,
Iron Manganese Masses (F12) (LRR N,
MLRA 147, 148)
MLRA 136)
Sandy Gleyed Matrix (s4)
Sandy Redox (S5)
Umbric Surface (F13) (MLRA 136, 122)
Piedmont Floodplain Soils (F19) (MLRA 148)
31ndicators of Hydrophytic vegetation and
wetland hydrology must be present, unless
Stripped Matrix (S6)
disturbed or problematic.
Restrictive Layer (if observed):
Type:
Depth (inches):
Hydric Soil Present?
Yes X No
Remarks:
Meets hydric soil criteria (F3 -Depleted Matrix).

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400 Regency Forest Drive � LAM
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Fax: [phone] `"'"`” SIha1 cn.�° " Toa w Broad St 301 Glenwood Ave
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CLIA DESIGN, P.A. `1 SKINNER
400 Regency Forest Drive � LAM
Suite 120 HIGHSMITH
Cary, North Carolina 27518 ARCHITECTS
-
Phone: [phone]
Fax: [phone] `"'"`” SIha1 cn.�° " Toa w Broad St 301 Glenwood Ave
Po box sss since 270
LA: C-106 Wilson, NO 27894 Raleigh, NO 27603
T 252-291-4127 T 919-295-2248
PE: C-1595 F 252-291-1[l70 F 919-853-9980

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M-16 MIDDLE SCHOOL CLH DESIGN P.A.
TOWN OF CARY /
DATE 2/20/17
PROJECT NO. 15.188 400 Regency Forest Drive
Suite 120
C-3 IMPACT MAP #1 Cary, North Carolina 27518
Phone: [phone] (
Fax: [phone]

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M-16 MIDDLE SCHOOL CLH DESIGN P.A.
TOWN OF CARY /
DATE 2/20/17
PROJECT NO. 15.188 400 Regency Forest Drive
Suite 120
C=4 IMPACT MAP #2 (
Cary, North Carolina 27518
Phone: [phone]
Fax: [phone]

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M-16 MIDDLE SCHOOL CLH DESIGN P.A.
TOWN OF CARY /
DATE 2/20/17
PROJECT NO. 15.188 400 Regency Forest Drive
Suite 120
C=5 IMPACT MAP #3 (
Cary, North Carolina 27518
Phone: [phone]
Fax: [phone]

IMPACT LEGEND
TYPE
TION
ZONE '2'
DE LINEA
JORDAN BUFFER
CH=
ZONE '1'
WL=
(JB Z1)
-
JORDAN BUFFER
0.13 AC
ZONE '2'
-
(JB Z2)
0.16 AC
WETLAND
-
(WL)
1 0.01 AC
STREAM CHANNEL
4 LF
(CH)
Z1= ZONE '1'
Z2=
ZONE '2'
JB=
JORDAN BUFFER
CH=
STREAM CHANNEL
WL=
WETLAND
IMPACT TABLE
STREAM CROSSING CONSTRUCTION SEQUENCE
1. STAKE OUT CLEARING LIMITS AND INSTALL TREE PROTECTION FENCE.
2. INSTALL SILT FENCE ALONG NORTHERN BANK OF STREAM.
3. INSTALL TEMPORARY SAND BAG COFFER DAM UPSTREAM OF PROPOSED HEADWALL.
4. INSTALL TEMPORARY PUMP AND BYPASS HOSE PARALLEL WITH EXISTING STREAM BANK TO DISCHARGE BELOW OUTLET OF
PROSOSED CULVERTS. CONTRACTOR SHALL SIZE PUMP FOR NORMAL STREAM FLOW AND PROVIDE POWER REQUIRED FOR
PUMP OPERATION.
5. EXCAVATE TRENCH FOR THE 2 PROPOSED 5'Hx6'W PRE -CAST BOX CULVERTS.
6. INSTALL PERMANENT CULVERTS AND HEADWALL IN EXCAVATED TRENCH. INSTALL CULVERTS SUCH THAT UPSTREAM AND
DOWNSTREAM INVERTS ARE SET AS SPECIFIED IN THE GRADING PLAN. OVER -EXCAVATE UNSUITABLE SOILS AND REPLACE
WITH SUITABLE MATERIALS (SEE SPECIFICATIONS).
7. BACKFILL CULVERTS AND ROUGH GRADE ROAD CROSSING.
8. STABILIZE DISTURBED SLOPES AT INLET AND OUTLET OF PERMANENT CULVERTS WITH PERMANENT SEEDING AND TEMPORARY
SLOPE LININGS.
9. REMOVE TEMPORARY SAND BAG COFFER DAM AND PUMP TO ALLOW STREAM FLOW THROUGH PERMANENT CULVERTS.
10. BEGIN PUBLIC ROAD CONSTRUCTION.
ZONE 2 AREA
IMPACTED BY ROAD
GRADING=
1,807 S.F. (0.04 AC)
IMPACT
LOCATION
TYPE SQUARE FT.
ACRES
LINEAR FT.
CH ONLY
STREAM IMPACT
WIDTH
IMPACT AREA #4
JB Z1 8,760 S.F.
0.20 AC
-
-
JB Z2 5,556 S.F.
0.13 AC
-
-
WL 6,794 S.F.
0.16 AC
-
-
CH 583 S.F.
1 0.01 AC
146 LF
4 LF
WETLAND POINTS
Flag ID Northing Easting
WF 70001BEG 766969.9666' 2029174.2888'
WF 70002 766986.1087' 2029192.7314'
WF 70003 766983.1748' 2029263.7134'
WF 70004 766938.0704' 2029262.5486'
WF 70005 766922.0030' 2029252.8051'
WF 70006 766907.0745' 2029227.4210'
WF 70007 766906.5785' 2029204.1468'
WF 70008END 766935.5876' 2029189.3495'
WF 80001BEG 767016.8654' 2029173.5372'
WF 80002 767042.1376' 2029167.2114'
WF 80003 767091.9893' 2029168.1013'
WF 80004 767116.3579' 2029162.3948'
WF 80005 767144.3741' 2029171.7156'
WF 80006 767150.6012' 2029197.4575'
WF 80007 767190.8863' 2029197.2303'
WF 80008 767192.4897' 2029212.5077'
WF 80009 767171.7520' 2029213.5946'
WF 80010 767132.9226' 2029223.6435'
WF 80011 767100.6373' 2029228.2000'
WF 80012 767043.8753' 2029250.3990'
WF 80013END 767023.7203' 2029245.5453'
TOTAL WETLAND
IMPACT AREA (WL)=
Z337 S.F. (0.05 AC)
WETLAND AREA
IMPACTED BY ROAD
GRADING=
1,525 S.F. (0.04 AC)
WF
TOTAL ZONE 2 TOTAL ZONE 1 ZONE 1 AREA
IMPACT AREA= IMPACT AREA= IMPACTED BY ROAD
2,828 S.F. (0.06AC) 4,257 S.F. (0.10 AC) GRADING=
3,291 S.F. (0.08 AC
80008 mi
WF 800071,1, I I 1\
I \
I� 80009 \\ \\
/IV
WF 80004
cl I
X11
11
WF 80006 \ \ STREAM \\ \I
\ \ #2000
\ 1 I
100' OF
WF 100010 o o I I TRANSI
Inc o \\ /Ill
WF 8000 I I \ \ \\ \ \l I I I �I
TEI
WF
WF
TOTAL WETLAND
IMPACT AREA (WL)=
4,457 S.F. (0.10 AC)
WETLAND AREA
IMPACTED BY ROAD
GRADING=
1,522 S.F. (0.03 AC)
BUFF
I A
I, 4�,AA r) \�
r�
Y
TOTAL STREAM IMPACT
AREA = 583 S.F. /
(0.01 AC), 146 L.F.
i
STREAM AREA
IMPACTED BY ROAD
GRADING = 421 S.F.
(0.01 AC)
TOTAL ZONE 1
GRAPHIC SCALE IMPACT AREA=
4,503 S.F. (0.10 AC)
20 40 80 1
IMPACT MAP #4 ( IN FEET )
1 inch = 40 ft.
M-16 MIDDLE SCHOOL
TOWN OF CARY
DATE 3/17/17
PROJECT NO: 15.188
C-6 IMPACT MAP #4
I /
I
I
I
I
I
7 I
ZONE 1 AREA
IMPACTED BY ROAD
GRADING=
> 3,217 S.F. (0.07 AC)
HEAL)
WAIL
i
I
I I
TOTAL ZONE 2
IMPACT AREA=
Z728 S.F. (0.06 AC)
I
I
ZONE 2 AREA
IMPACTED BY ROAD
GRADING=
2,106 S.F. (0.05 AC)
CLH DESIGN, P.A.
400 Regency Forest Drive
Suite 120
Cary, North Carolina 27518
Phone: [phone]
Fax: [phone]

Statement of Mitigation Credit Availability
Cripple Creek Stream & Wetland Mitigation Bank
March 1, 2017
Ms. Tasha Alexander
U.S. Army Corps of Engineers
Raleigh Regulatory Field Office
3331 Heritage Trade Drive
Suite 105
Wake Forest, NC 27587
Re: Availability of Compensatory Stream Mitigation Credits
Project: WCPSS M-16 Site (Proposed NW Cary Middle School)
We are providing this letter in accordance with 33 CFR §332.8(r), to confirm that .025 Riparian Wetland Mitigation
Credits & .637 Non -Riparian Wetland Credits (Credits) from the Cripple Creek Stream & Wetland Mitigation Bank
(Bank) are currently available and all or a portion may be used, once transferred, for compensatory mitigation
relative to the WCPSS M-16 Site (Proposed NW Cary Middle School) project, and as proposed by Wake County
Public School System (Applicant).
The Applicant may ultimately purchase the Credits, if they are available, following Permit issuance. Should the
Applicant purchase the Credits at that time, we will complete and execute the Compensatory Mitigation
Responsibility Transfer Form (Transfer Form) within five (5) days of receipt of the full purchase price.
We will additionally provide copies of the completed and executed Transfer Form to the Applicant, the Bank's US
Army Corps (USACE) Project Manager and, if needed, other regulatory agencies. In addition, we will provide USACE
with an updated copy of the Bank's Ledger, reflecting the transaction. Transaction information in the updated Bank
Ledger will include relevant Permit and Applicant information as well as the number and resource type of the debited
Credits.
Should your office have any questions, please contact me at 919.334.9123.
Sincerely,
JI
Tiffani Bylow
Restoration Systems, LLC

Mitigation Services
ENVIRONMENTAL QUALITY
March 9, 2017
Jason Phelan
Wake County Public School System
1429 Rock Quarry Road, Suite 116
Raleigh, NC 27610
Project: WCPSS M-16 Site (NW Cary MS)
ROY COOPER
Goverlor
MICHAEL S. REGAN
Expiration of Acceptance: September 9, 2017
County: Wake
The purpose of this letter is to notify you that the NCDEQ Division of Mitigation Services (DMS) is willing to accept
payment for compensatory mitigation for impacts associated with the above referenced project as indicated in the
table below. Please note that this decision does not assure that participation in the DMS in -lieu fee mitigation
program will be approved by the permit issuing agencies as mitigation for project impacts. It is the responsibility
of the applicant to contact permitting agencies to determine if payment to the DMS will be approved. You must
also comply with all other state, federal or local government permits, regulations or authorizations associated with
the proposed activity including G.S. § 143-214.11.
This acceptance is valid for six months from the date of this letter and is not transferable. If we have not
received a copy of the issued 404 Permit/401 Certification/CAMA permit within this time frame, this
acceptance will expire. It is the applicant's responsibility to send copies of the permits to DMS. Once DMS
receives a copy of the permit(s) an invoice will be issued based on the required mitigation in that permit and
payment must be made prior to conducting the authorized work. The amount of the in -lieu fee to be paid by an
applicant is calculated based upon the Fee Schedule and policies listed on the DMS website.
Based on the information supplied by you in your request to use the DMS, the impacts for which you are
requesting compensatory mitigation credit are summarized in the following table. The amount of mitigation
required and assigned to DMS for this impact is determined by permitting agencies and may exceed the impact
amounts shown below.
Impact
River
Basin
CU Location
(8 -digit HUC)
Stream (feet)
Wetlands (acres) Buffer I
(Sq. Ft.)
Buffer II
(Sq. Ft.)
Cold
Cool Warm
Riparian
Non -Riparian Coastal Marsh
Cape Fear
03030002
0o
0
0.15
0 0 0
0
Upon receipt of payment, DMS will take responsibility for providing the compensatory mitigation. The mitigation
will be performed in accordance with the In -Lieu Fee Program instrument dated July 28, 2010 and 15A NCAC
02B .0295 as applicable. Thank you for your interest in the DMS in -lieu fee mitigation program. If you have any
questions or need additional information, please contact Kelly Williams at [phone].
cc: Elias Ruhl- agent
Sincerely,
Jame . Stanfill
Asset anagement Supervisor
State of North Carolina Environmental Quality Mitigation Services
1652 Mail Service Center I Raleigh, NC 27699-1652 I 217 W. Jones Street, Suite 3000
919 707 8976 T

STORMWATER IMPACT ANALYSIS
AND
DESIGN CALCULATIONS
New Middle School M-16
Winding Pine Trail
Cary, North Carolina
a
February, 2017
•'� S�- _ )
A.
-L
CLH design, .a.p
400 Regency For est Dlrve, Suite 120
Cary, North Carolina 27518
Phone: [phone] Fax: [phone]

2-0
SITE
' —
"0'
= 1
ei:: -ka'.
.%:
40
QUAD MAP: GREEN LEVEL
DATE: 1973 PHOTOREVISED 1981
M16 MIDDLE SCHOOL SCHOOL
CARY, NC
DATE DECEMBER, 2016
PROJECT NO. 15.188
WAKE COUNTY COUNTY QUAD MAP
v
SCALE: 1" = 1000'
CLH DESIGN, P.A.
Regency Park
400 Regency Forest Drive
Suite 120
Cary, North Carolina 27518
Phone:[phone]
Fax: [phone]

WsB2;
1
r Ws1832 i 'WsC2
SITE f'
I
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:y
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1 Ws8�
a= �� WsC2
WsC2
n WsE
416 MIDDLE SCHOOL
:ARY, NC
)ATE DECEMBER, 2016
ROJECT NO. 15.188
HAKE COUNTY COUNTY SOILS MAP 35
v
SCALE: 1" = 1000'
CLH DESIGN, P.A.
Regency Park
400 Regency Forest Drive
Suite 120
Cary, North Carolina 27518
Phone: [phone]
Fax: [phone]

Stormwater Impact Analysis
Middle School Proiect Description
The proposed M-16 Middle School is located at the end of Winding Pine Trail, west and south of Alston
Ridge Elementary School on Green Level Church Road. The site will be accessed to the south from
Winding Pine Trail and the North from a new/proposed Collector Avenue that will align across from
Cartecay Drive and perpendicular to Green Level Church Road. The site is 41.21 acres and is within the
Town of Cary.
The site stormwater run-off discharges to the south into Kit Creek that is within the Jordan Lake
Watershed. There is an existing pond at the northeast corner of the site, existing wetlands, and Town of
Cary Urban Transition Buffers on the site. Some wetlands will be impacted.
The site is designed to meet the Town of Cary current stormwater requirements. The site peak
stormwater discharges shall meet pre -development rates for the 1, 2, 5 and 10 -year 24 hour Design Storm
events as well as providing 85% removal of total suspended solids and stormwater treatment of the first l -
in run-off to provide nitrogen reduction.
Wetland impacts will be permitted through NC Division of Water Resources and the US Army Corps of
Engineers.
FEMA FIRM # 3720072500K dated Feb 2, 2007 indicates that the site is outside the limits the 100 year
flood plain.
Soils on the site consist of predominately of White Store and a small area of Creedmoor type C soils and
Worsham type D soils.
Future Mobile Classrooms are included with the Stormwater calculations.
Conclusions
Stormwater Quality
Calculations performed using Jordan/Falls Lake Stormwater Nutrient Load Accounting Tool Ver. 2.0
Pre -Development:
Site Area:
Base N Loading Rate:
TN Export:
Base P Loading Rate:
TP Export:
Post -Development (without treatment):
Site Area:
Base N Loading Rate:
TN Export:
Base P Loading Rate:
TP Export:
41.21 —ac (includes on-site public right-of-ways)
1.39 -lbs/ac/yr
57.28-lbs/yr
0.47 —lbs/ac/yr
19.37 —lbs/yr
41.21—ac (includes on-site public right-of-ways)
5.58 -lbs/ac/yr
229.95-lbs/yr
1.43—lbs/ac/yr
58.93 —lbs/yr

Post -Development (with treatment from three detention wetlands):
Site Area: 41.21— ac (includes on-site public right-of-ways)
Base N Loading Rate: 3.84 -lbs/ac/yr
TN Export: 158.25 -lbs/yr
Base P Loading Rate: 0.59 —lbs/ac/yr
TP Export: 24.31 —lbs/yr
Stormwater Quantity
The calculations are performed using the Rational method to determine peak flows and Hydraflow
Hydrographs Extension for AutoCAD Civil 3D software which utilizes TR -55 method by the United
States Soil Conservation Service (SCS) to design the detention wetlands.
Summary tables of the design calculations are provided below:
Pre -Development / Post -Development Peak Runoff Comparison Summary:
Analysis
Pre -Development
Post -Development
Post -Development
Detention
Point
Design Event
Qpre (cfs)
Qpost (cfs)
With Detention
Provided
1 -yr
20.11
29.43
10.50
Yes
M1
M2
1 -yr
10.17
25.43
3.85
Yes
M3
1 -yr
20.02
38.23
10.56
Yes
M4
1 -yr
12.46
9.16
N/A
No

Elementary School Proiect Description
The existing Alston Ridge Elementary School at the intersection of Kit Creek Road and Green Level
Church Road is impacted with a new public road, driveway modifications and wetland construction. The
elementary school site is being designed to meet a maximum of 10 percent of the previously approved
Town of Cary site plan 07 -SP -116 run-off rate for the 1 -yr and 10 -yr Design Storms. Nutrient
calculations are not required if the 10 percent maximum is met. Post Development discharge rates are
designed to be below the 07 -SP -116 predevelopment rates.
Summary tables of the design calculations are provided below:
Pre -Development / Post -Development Peak Runoff Comparison Summary:
Analysis
Pre -Development per
Post -Development
Post -Development
Point
Design Event
07 -SP -116
with Detention per
With Detention
Detention
Qpre (c£s)
07 -SP -116
Q(CfS)
Provided
Qpost(cfs)
1
1 -yr
4.70
1.62
1.60
2 -yr
5.80
2.01
1.98
No
5 -yr
6.57
2.27
2.24
10 -yr
7.30
2.52
2.49
1 -yr
5.35
3.23
2.13
2 -yr
6.60
5.87
3.00
yes, New
2
BMP `B'
5 -yr
7.48
12.47
5.02
10 -yr
8.31
17.71
7.63
1 -yr
10.45
6.89
6.89
2 -yr
-
-
-
No Impacts
3
from MS
5 -yr
-
-
-
project
10 -yr
-
-
-
Note: Run-off increases 9.7 percent. No nutrient calculations required.
Public Road Description
The proposed public road, identified as Public Road `A', is a linear connector and per Town staff
instructions, no quantity and quality calculations will be required. Properties adjacent to the public road
will be required to meet Town of Cary requirements when future development occurs.

Middle School Peak Flow

DATE
' 2-2-17 � /J
PROJECT NAME PROJECT NO
M16 Middle School 15-188
LOCATION BY
Cary, NC KAL
POINT:STORMWATER ANALYSIS
Development:
Rational Method
Site Area =
13.19 ac Tc =
5.80 min
Qal
=
20.11 cfs
Wt. CN =
78.9
Qa2
=
24.83 cfs
Site Soils:
100% White Store (D)
Qa5
=
28.23 cfs
I1=
4.49 in/hr I5=
6.31 in/hr
Qa10
=
31.40 cfs
I2=
5.55 in/hr I10=
7.01 in/hr
Wooded Area:
7.00 ac
CN=
77
C=
0.30
Impervious Area:
0.35 ac
CN=
98
C=
0.95
Lawn Area:
5.84 ac
CN=
80
C=
0.35
Weighted C:
0.34
Weighted CN:
78.9
Development:
Rational Method
Site Area =
10.13 ac Tc =
5.00 min
Qal
=
29.43 cfs
Wt. CN =
88.2
Qa2
=
36.33 cfs
Site Soils:
100% White Store (D)
Qa5
=
41.15 cfs
I1=
4.65 in/hr I5=
6.5 in/hr
Qa10
=
45.72 cfs
I2=
5.74 in/hr I10=
7.22 in/hr
Wooded Area:
0.20 ac
CN=
77
C=
0.30
Impervious Area:
4.55 ac
CN=
98
C=
0.95
Lawn Area:
5.38 ac
CN=
80
C=
0.35
Weighted C:
0.62
Weighted CN:
88.2

DATE
2-2-17 � /J
PROJECT NAME PROJECT NO
M16 Middle School 15-188
LOCATION BY
Cary, NC KAL
STORMWATER ANALYSIS POINT:
Development:
Rational Method
Site Area =
7.10 ac Tc =
5.00 min
Qal
=
10.17 cfs
Wt. CN =
77.4
Qa2
=
12.56 cfs
Site Soils:
100% White Store (D)
Qa5
=
14.22 cfs
I1=
4.65 in/hr I5=
6.5 in/hr
Qa10
=
15.80 cfs
I2=
5.74 in/hr I10=
7.22 in/hr
Wooded Area:
6.30 ac
CN=
77
C=
0.30
Impervious Area:
0.03 ac
CN=
98
C=
0.95
Lawn Area:
0.77 ac
CN=
80
C=
0.35
Weighted C:
0.31
Weighted CN:
77.4
Development:
Rational Method
Site Area =
9.95 ac Tc =
5.00 min
Qal
=
25.43 cfs
Wt. CN =
85.8
Qa2
=
31.40 cfs
Site Soils:
100% White Store (D)
Qa5
=
35.56 cfs
I1=
4.65 in/hr I5=
6.5 in/hr
Qa10
=
39.51 cfs
I2=
5.74 in/hr I10=
7.22 in/hr
Wooded Area:
1.40 ac
CN=
77
C=
0.30
Impervious Area:
3.43 ac
CN=
98
C=
0.95
Lawn Area:
5.12 ac
CN=
80
C=
0.35
Weighted C:
0.55
Weighted CN:
85.8

DATE
' 2-2-17 � /J
PROJECT NAME PROJECT NO
M16 Middle School 15-188 0
LOCATION BY
Cary, NC KAL
STORMWATER ANALYSIS POINT: M3
;nt:
Rational Method
Site Area =
13.05 ac Tc =
5.00 min
Qal
=
20.02 cfs
Wt. CN =
78.7
Qa2
=
24.72 cfs
Site Soils:
100% White Store (D)
Qa5
=
27.99 cfs
Il=
4.65 in/hr I5=
6.5 in/hr
Qal0
=
31.10 cfs
I2=
5.74 in/hr I10=
7.22 in/hr
Wooded Area:
6.30 ac
CN=
77
C=
0.30
Impervious Area:
0.09 ac
CN=
98
C=
0.95
Lawn Area:
6.66 ac
CN=
80
C=
0.35
Weighted C:
0.33
Weighted CN:
78.7
tent:
Rational Method
Site Area =
15.80 ac Tc =
5.00 min
Qal
=
38.23 cfs
Wt. CN =
85.0
Qa2
=
47.19 cfs
Site Soils:
100% White Store (D)
Qa5
=
53.45 cfs
I1=
4.65 in/hr I5=
6.5 in/hr
Qal0
=
59.39 cfs
I2=
5.74 in/hr I10=
7.22 in/hr
Wooded Area:
1.70 ac
CN=
77
C=
0.30
Impervious Area:
4.63 ac
CN=
98
C=
0.95
Lawn Area:
9.47 ac
CN=
80
C=
0.35
Weighted C:
0.52
Weighted CN:
85.0

DATE
' 2-2-17 � /J
PROJECT NAME PROJECT NO
M16 Middle School 15-188 0
LOCATION BY
Cary, NC KAL
STORMWATER ANALYSIS POINT: .i
;nt:
Rational Method
Site Area =
7.87 ac Tc =
5.00 min
Qal
=
12.46 cfs
Wt. CN =
79.4
Qa2
=
15.38 cfs
Site Soils:
100% White Store (D)
Qa5
=
17.42 cfs
I1=
4.65 in/hr 15=
6.5 in/hr
Qa10
=
19.35 cfs
I2=
5.74 in/hr 110=
7.22 in/hr
Wooded Area:
1.50 ac
CN=
77
C=
0.30
Impervious Area:
0.00 ac
CN=
98
C=
0.95
Lawn Area:
6.37 ac
CN=
80
C=
0.35
Weighted C:
0.34
Weighted CN:
79.4
tent:
Rational Method
Site Area =
5.25 ac Tc =
5.00 min
Qal
=
9.16 cfs
Wt. CN =
80.4
Qa2
=
11.31 cfs
Site Soils:
100% White Store (D)
Qa5
=
12.81 cfs
I1=
4.65 in/hr 15=
6.5 in/hr
Qa10
=
14.24 cfs
I2=
5.74 in/hr 110=
7.22 in/hr
Wooded Area:
1.40 ac
CN=
77
C=
0.30
Impervious Area:
0.34 ac
CN=
98
C=
0.95
Lawn Area:
3.51 ac
CN=
80
C=
0.35
Weighted C:
0.38
Weighted CN:
80.4

DATE
2-2-17 Q
PROJECT NAME PROJECT NO o �lI ull
M16 Middle School 15-188
LOCATION BY
Cary, NC KAL
lent:
Rational Method
Site Area =
6.43 ac Tc
=
5.00 min
Qal
= 22.09 cfs
Wt. CN =
91.7
Qa2
= 27.28 cfs
Site Soils:
50% Creedmoor (Type C),
50% White Store (D)
Qa5
= 30.89 cfs
I1=
4.65 in/hr
I5=
6.5 in/hr
Qa10
= 34.32 cfs
I2=
5.74 in/hr
I10=
7.22 in/hr
Wooded Area:
0.00 ac
CN= 77
C= 0.30
Impervious Area:
4.17 ac
CN= 98
C= 0.95
Lawn Area:
2.26 ac
CN= 80
C= 0.35
Weighted C: 0.74
Weighted CN: 91.7
gent:
Rational Method
Site Area =
3.68 ac Tc
=
5.00 min
Qal
= 7.00 cfs
Wt. CN =
81.7
Qa2
= 8.64 cfs
Site Soils:
50% Creedmoor (Type C),
50% White Store (D)
Qa5
= 9.79 cfs
I1=
4.65 in/hr
I5=
6.5 in/hr
Qa10
= 10.88 cfs
I2=
5.74 in/hr
I10=
7.22 in/hr
Wooded Area:
0.20 ac
CN= 77
C= 0.30
Impervious Area:
0.38 ac
CN= 98
C= 0.95
Lawn Area:
3.10 ac
CN= 80
C= 0.35
Weighted C: 0.41
Weighted CN: 81.7

rIECT
DATE
2-2-17ME PROJECT NO School 15-188 BY
Cary, NC KAL 000 JJJ)))
lent:
1.99 ac Tc
=
5.00 min
Qat
Wt. CN =
Rational Method
Site Area =
7.96 ac Tc
=
5.00 min
50% Creedmoor (Type C),
Qal
= 22.52 cfs
Wt. CN =
87.8
I5=
6.5 in/hr
Qat
= 27.80 cfs
Site Soils:
50% Creedmoor (Type C),
50% White Store (D)
Wooded Area:
Qa5
= 31.49 cfs
I1=
4.65 in/hr
I5=
6.5 in/hr
0.00 ac
Qa10
= 34.98 cfs
I2=
5.74 in/hr
I10=
7.22 in/hr
80
Weighted C:
Wooded Area:
0.00 ac
CN=
77
C= 0.30
Impervious Area:
3.43 ac
CN=
98
C= 0.95
Lawn Area:
4.53 ac
CN=
80
C= 0.35
Weighted C:
0.61
Weighted CN:
87.8
lent:
1.99 ac Tc
=
5.00 min
Qat
Wt. CN =
Rational Method
Site Area =
0.34 ac Tc
=
5.00 min
50% Creedmoor (Type C),
Qal
= 1.39 cfs
Wt. CN =
95.9
I5=
6.5 in/hr
Qat
= 1.72 cfs
Site Soils:
50% Creedmoor (Type C),
50% White Store (D)
Wooded Area:
Qa5
= 1.94 cfs
I1=
4.65 in/hr
I5=
6.5 in/hr
0.00 ac
Qa10
= 2.16 cfs
I2=
5.74 in/hr
I10=
7.22 in/hr
80
Weighted C:
Wooded Area:
0.00 ac
CN=
77
C= 0.30
Impervious Area:
0.30 ac
CN=
98
C= 0.95
Lawn Area:
0.04 ac
CN=
80
C= 0.35
Weighted C:
0.88
Weighted CN:
95.9
Site Area =
1.99 ac Tc
=
5.00 min
Qat
Wt. CN =
77.9
= 4.07 cfs
Qa10
= 4.52 cfs
Site Soils:
50% Creedmoor (Type C),
50% White Store (D)
C= 0.95
I1=
4.65 in/hr
I5=
6.5 in/hr
I2=
5.74 in/hr
I10=
7.22 in/hr
Wooded Area:
1.40 ac
CN=
77
Impervious Area:
0.00 ac
CN=
98
Lawn Area:
0.59 ac
CN=
80
Weighted C:
0.31
Weighted CN:
77.9
Rational Method
Qal
= 2.91 cfs
Qat
= 3.60 cfs
Qa5
= 4.07 cfs
Qa10
= 4.52 cfs
C= 0.30
C= 0.95
C= 0.35

rIECT
DATE
2-2-17ME PROJECT NO School 15-188 BY
Cary, NC KAL 000 JJJ)))
lent:
2.90 ac Tc
=
5.00 min
Qat
Wt. CN =
Rational Method
Site Area =
12.99 ac Tc
=
5.00 min
50% Creedmoor (Type C),
Qal
= 34.05 cfs
Wt. CN =
86.4
I5=
6.5 in/hr
Qat
= 42.04 cfs
Site Soils:
50% Creedmoor (Type C),
50% White Store (D)
Wooded Area:
Qa5
= 47.61 cfs
I1=
4.65 in/hr
I5=
6.5 in/hr
0.00 ac
Qa10
= 52.90 cfs
I2=
5.74 in/hr
I10=
7.22 in/hr
80
Weighted C:
Wooded Area:
0.00 ac
CN=
77
C= 0.30
Impervious Area:
4.63 ac
CN=
98
C= 0.95
Lawn Area:
8.36 ac
CN=
80
C= 0.35
Weighted C:
0.56
Weighted CN:
86.4
lent:
2.90 ac Tc
=
5.00 min
Qat
Wt. CN =
Rational Method
Site Area =
0.00 ac Tc
=
5.00 min
50% Creedmoor (Type C),
Qal
= 0.00 cfs
Wt. CN =
80.0
I5=
6.5 in/hr
Qat
= 0.00 cfs
Site Soils:
50% Creedmoor (Type C),
50% White Store (D)
Wooded Area:
Qa5
= 0.00 cfs
I1=
4.65 in/hr
I5=
6.5 in/hr
0.00 ac
Qa10
= 0.00 cfs
I2=
5.74 in/hr
I10=
7.22 in/hr
80
Weighted C:
Wooded Area:
0.00 ac
CN=
77
C= 0.30
Impervious Area:
0.00 ac
CN=
98
C= 0.95
Lawn Area:
0.00 ac
CN=
80
C= 0.35
Weighted C:
0.35
Weighted CN:
80.0
Site Area =
2.90 ac Tc
=
5.00 min
Qat
Wt. CN =
78.2
= 6.05 cfs
Qa10
= 6.72 cfs
Site Soils:
50% Creedmoor (Type C),
50% White Store (D)
C= 0.95
I1=
4.65 in/hr
I5=
6.5 in/hr
I2=
5.74 in/hr
I10=
7.22 in/hr
Wooded Area:
1.70 ac
CN=
77
Impervious Area:
0.00 ac
CN=
98
Lawn Area:
1.20 ac
CN=
80
Weighted C:
0.32
Weighted CN:
78.2
Rational Method
Qal
= 4.32 cfs
Qat
= 5.34 cfs
Qa5
= 6.05 cfs
Qa10
= 6.72 cfs
C= 0.30
C= 0.95
C= 0.35

DATE
'
2-2-17
PROJECT NAME
PROJECT NO
M16 Middle School
15-188
LOCATION
BY
Cary, NC
KAL
Allowable
1 1
BMP M1
Pre -development:
Q1=
20.11 cfs
Q 2=
24.83 cfs
Q 5=
28.23 cfs
Q 10=
31.40 cfs
Site -Bypass
Q1=
7.00 cfs
Q 2=
8.64 cfs
Q 5=
9.79 cfs
Q 10=
10.88 cfs
Pond Off-site
Q 1=
0.00 cfs
Q 2=
0.00 cfs
Q 5=
0.00 cfs
Q 10=
0.00 cfs
Total Allowable
(Pre -development - Area Bypass + Pond Offsite Area)
Q 1=
13.11 cfs
Q 2=
16.18 cfs
Q 5=
18.44 cfs
Q 10=
20.52 cfs
Discharge from BMP
Q 1=
3.50 cfs
Q 2=
6.82 cfs
Q 5=
13.03 cfs
Q 10=
17.47 cfs
Total Discharge from
Area
Q 1=
10.50 cfs
Q 2=
15.46 cfs
Q 5=
22.82 cfs
Q 10=
28.35 cfs

DATE
'
2-2-17
PROJECT NAME
PROJECT NO
M16 Middle School
15-188
LOCATION
BY
Cary, NC
KAL
Allowable
1 1
BMP M2
Pre -development:
Q1=
10.17 cfs
Q 2=
12.56 cfs
Q 5=
14.22 cfs
Q 10=
15.80 cfs
Site -Bypass
Q1=
2.91 cfs
Q 2=
3.60 cfs
Q 5=
4.07 cfs
Q 10=
4.52 cfs
Pond Off-site
Q 1=
1.39 cfs
Q 2=
1.72 cfs
Q 5=
1.94 cfs
Q 10=
2.16 cfs
Total Allowable
(Pre -development - Area Bypass + Pond Offsite Area)
Q 1=
8.65 cfs
Q 2=
10.68 cfs
Q 5=
12.09 cfs
Q 10=
13.44 cfs
Discharge from BMP
Q 1=
2.33 cfs
Q 2=
4.32 cfs
Q 5=
8.78 cfs
Q 10=
12.12 cfs
Total Discharge from
Area
Q 1=
3.85 cfs
Q 2=
6.20 cfs
Q 5=
10.91 cfs
Q 10=
14.49 cfs

DATE
'
2-2-17
PROJECT NAME
PROJECT NO
M16 Middle School
15-188
LOCATION
BY
Cary, NC
KAL
Allowable
1 1
BMP M3
Pre -development:
Q1=
20.02 cfs
Q 2=
24.72 cfs
Q 5=
27.99 cfs
Q 10=
31.10 cfs
Site -Bypass
Q1=
4.32 cfs
Q 2=
5.34 cfs
Q 5=
6.05 cfs
Q 10=
6.72 cfs
Pond Off-site
Q 1=
0.00 cfs
Q 2=
5.34 cfs
Q 5=
6.05 cfs
Q 10=
6.72 cfs
Total Allowable
(Pre -development - Area Bypass + Pond Offsite Area)
Q 1=
15.70 cfs
Q 2=
24.72 cfs
Q 5=
27.99 cfs
Q 10=
31.10 cfs
Discharge from BMP
Q 1=
6.24 cfs
Q 2=
11.67 cfs
Q 5=
22.45 cfs
Q 10=
29.93 cfs
Total Discharge from
Area
Q 1=
10.56 cfs
Q 2=
11.67 cfs
Q 5=
22.45 cfs
Q 10=
29.93 cfs

Elementary School Peak Flow

DATE
' 2-2-17 � /J
PROJECT NAME PROJECT NO
M16 Middle School 15-188
LOCATION BY
Cary, NC KAL
STORMWATER ANALYSIS POINT:
Development Before Elementary School:
Rational Method
Site Area =
4.57 ac Tc
=
5.00 min
Qal
=
4.70 cfs
Wt. CN =
77.3
Qa2
=
5.80 cfs
Site Soils:
50% Creedmoor (Type C),
50% White Store
(D)
Qa5
=
6.57 cfs
I1=
4.65 in/hr
I5=
6.5 in/hr
Qa10
=
7.30 cfs
I2=
5.74 in/hr
I10=
7.22 in/hr
Wooded Area:
3.60 ac
CN=
76
C=
0.20
Impervious Area:
0.00 ac
CN=
98
C=
0.95
Lawn Area:
0.97 ac
CN=
82
C=
0.30
Weighted C:
0.22
Weighted CN:
77.3
Development After Elementary
School:
Rational Method
Site Area =
0.83 ac Tc
=
5.00 min
Qal
=
1.62 cfs
Wt. CN =
85.0
Qa2
=
2.01 cfs
Site Soils:
50% Creedmoor (Type C),
50% White Store
(D)
Qa5
=
2.27 cfs
I1=
4.65 in/hr
I5=
6.5 in/hr
Qa10
=
2.52 cfs
I2=
5.74 in/hr
I10=
7.22 in/hr
Wooded Area:
0.40 ac
CN=
76
C=
0.20
Impervious Area:
0.08 ac
CN=
98
C=
0.95
Lawn Area:
0.35 ac
CN=
82
C=
0.30
Weighted C:
0.42
Weighted CN:
85.0
Development After Middle
School:
Rational Method
Site Area =
0.91 ac Tc
=
5.00 min
Qal
=
1.60 cfs
Wt. CN =
83.9
Qa2
=
1.98 cfs
Site Soils:
50% Creedmoor (Type C),
50% White Store
(D)
Qa5
=
2.24 cfs
I1=
4.65 in/hr
I5=
6.5 in/hr
Qa10
=
2.49 cfs
I2=
5.74 in/hr
I10=
7.22 in/hr
Wooded Area:
0.17 ac
CN=
76
C=
0.20
Impervious Area:
0.09 ac
CN=
98
C=
0.95
Lawn Area:
0.65 ac
CN=
82
C=
0.30
Weighted C:
0.38
Weighted CN:
83.9

DATE
2-2-17 � /J
PROJECT NAME PROJECT NO
M16 Middle School 15-188
LOCATION BY
Cary, NC KAL
STORMWATER ANALYSIS POINT:
Development Before Elementary School:
Rational Method
Site Area =
3.87 ac Tc =
5.00 min
Qal
=
5.35 cfs
Wt. CN =
81.5
Qa2
=
6.60 cfs
Site Soils:
50% Creedmoor (Type C), 50% White Store (D)
Qa5
=
7.48 cfs
I1=
4.65 in/hr I5=
6.5 in/hr
Qa10
=
8.31 cfs
I2=
5.74 in/hr I10=
7.22 in/hr
Wooded Area:
0.50 ac
CN=
76
C=
0.20
Impervious Area:
0.06 ac
CN=
98
C=
0.95
Lawn Area:
3.31 ac
CN=
82
C=
0.30
Weighted C:
0.30
Weighted CN:
81.5
Development After Elementary
School:
Rational Method
Site Area =
11.41 ac Tc =
5.00 min
Qal
=
29.05 cfs
Wt. CN =
88.0
Qa2
=
35.87 cfs
Site Soils:
50% Creedmoor (Type C), 50% White Store (D)
Qa5
=
40.63 cfs
I1=
4.65 in/hr I5=
6.5 in/hr
Qa10
=
45.14 cfs
I2=
5.74 in/hr I10=
7.22 in/hr
Wooded Area:
0.20 ac
CN=
76
C=
0.20
Impervious Area:
4.38 ac
CN=
98
C=
0.95
Lawn Area:
6.83 ac
CN=
82
C=
0.30
Weighted C:
0.55
Weighted CN:
88.0
Development After Middle
School:
Rational Method
Site Area =
11.33 ac Tc =
5.00 min
Qal
=
31.18 cfs
Wt. CN =
89.1
Qa2
=
38.49 cfs
Site Soils:
50% Creedmoor (Type C), 50% White Store (D)
Qa5
=
43.60 cfs
I1=
4.65 in/hr I5=
6.5 in/hr
Qa10
=
48.44 cfs
I2=
5.74 in/hr I10=
7.22 in/hr
Wooded Area:
0.20 ac
CN=
76
C=
0.20
Impervious Area:
5.12 ac
CN=
98
C=
0.95
Lawn Area:
6.01 ac
CN=
82
C=
0.30
Weighted C:
0.59
Weighted CN:
89.1

DATE
' 2-2-17 � /J
PROJECT NAME PROJECT NO
M16 Middle School 15-188 0
LOCATION BY
Carv. NC KAL
;nt Before Elementary School:
Rational Method
Site Area = 10.55 ac Tc
=
5.00 min
Qal
=
10.62 cfs
Wt. CN = 76.8
Qa2
=
13.11 cfs
Site Soils: 50% Creedmoor (Type C), 50% White Store (D)
Qa5
=
14.84 cfs
I1= 4.65 in/hr
15=
6.5 in/hr
Qa10
=
16.49 cfs
I2= 5.74 in/hr
110=
7.22 in/hr
Wooded Area:
9.40 ac
CN=
76
C=
0.20
Impervious Area:
0.09 ac
CN=
98
C=
0.95
Lawn Area:
1.06 ac
CN=
82
C=
0.30
Weighted C:
0.22
Weighted CN:
76.8
lent After Elementary School:
Rational Method
Site Area = 6.75 ac Tc
=
5.00 min
Qal
=
16.95 cfs
Wt. CN = 87.6
Qa2
=
20.92 cfs
Site Soils: 50% Creedmoor (Type C), 50% White Store (D)
Qa5
=
23.70 cfs
I1= 4.65 in/hr
15=
6.5 in/hr
Qa10
=
26.33 cfs
I2= 5.74 in/hr
110=
7.22 in/hr
Wooded Area:
0.50 ac
CN=
76
C=
0.20
Impervious Area:
2.37 ac
CN=
98
C=
0.95
Lawn Area:
3.68 ac
CN=
82
C=
0.30
Future Impervious Area:
0.20 ac
CN=
98
C=
0.95
Weighted C:
0.54
Weighted CN:
87.6
lent After Middle School:
Rational Method
Site Area = 6.75 ac Tc
=
5.00 min
Qal
=
16.95 cfs
Wt. CN = 87.6
Qa2
=
20.92 cfs
Site Soils: 50% Creedmoor (Type C), 50% White Store (D)
Qa5
=
23.70 cfs
I1= 4.65 in/hr
15=
6.5 in/hr
Qa10
=
26.33 cfs
I2= 5.74 in/hr
110=
7.22 in/hr
Wooded Area:
0.50 ac
CN=
76
C=
0.20
Impervious Area:
2.37 ac
CN=
98
C=
0.95
Lawn Area:
3.68 ac
CN=
82
C=
0.30
Future Impervious Area:
0.20 ac
CN=
98
C=
0.95
Weighted C:
Weighted CN:
0.54
87.6

DATE
2-2-17 Q
PROJECT NAME PROJECT NO o �lI ull
M16 Middle School 15-188
LOCATION BY
Cary, NC KAL
Post -Development:
Rational Method
Site Area =
3.64 ac Tc
=
5.00 min
Qal
=
11.27 cfs
Wt. CN =
91.0
Qa2
=
13.91 cfs
Site Soils:
50% Creedmoor (Type C),
50% White Store
(D)
Qa5
=
15.76 cfs
I1=
4.65 in/hr
I5=
6.5 in/hr
Qa10
=
17.51 cfs
I2=
5.74 in/hr
I10=
7.22 in/hr
Wooded Area:
0.00 ac
CN=
76
C=
0.20
Impervious Area:
1.85 ac
CN=
98
C=
0.95
Lawn Area:
1.59 ac
CN=
82
C=
0.30
Future Impervious
Area:
0.20 ac
CN=
98
C=
0.95
Weighted C:
0.67
Weighted CN:
91.0
STORMWATER ANALYSIS
POINT:
Area
bypasses
1 1
Post -Development:
Rational Method
Site Area =
3.10 ac Tc
=
5.00 min
Qal
=
5.78 cfs
Wt. CN =
83.9
Qa2
=
7.14 cfs
Site Soils:
50% Creedmoor (Type C),
50% White Store
(D)
Qa5
=
8.09 cfs
I1=
4.65 in/hr
I5=
6.5 in/hr
Qa10
=
8.98 cfs
I2=
5.74 in/hr
I10=
7.22 in/hr
Wooded Area:
0.50 ac
CN=
76
C=
0.20
Impervious Area:
0.56 ac
CN=
98
C=
0.95
Lawn Area:
2.04 ac
CN=
82
C=
0.30
Weighted C: 0.40
Weighted CN: 83.9
NO CHANGE WITH MIDDLE SCHOOL PROJECT

rIECT
DATE
2-2-17ME PROJECT NO School 15-188 BY
Cary, NC KAL 000 JJJ)))
lent:
1.19 ac Tc
=
5.00 min
Qat
Rational Method
Site Area =
10.14 ac Tc =
5.00 min
=
Qal
= 28.43 cfs
Wt. CN =
89.5
Wt. CN =
98.0
Qat
= 39.76 cfs
Site Soils:
50% Creedmoor (Type C),
50% White Store (D)
Site Soils:
Qa5
= 0.00 cfs
I1=
4.65 in/hr
= 1.24 cfs
I1=
Qa10
= 0.00 cfs
I10=
6.50 in/hr
Qa10
= 1.37 cfs
I2=
5.74 in/hr
Wooded Area:
0.00 ac
CN=
76
C= 0.20
Impervious Area:
4.73 ac
CN=
98
C= 0.95
Lawn Area:
5.41 ac
CN=
82
98
C= 0.30
Weighted C:
Lawn Area:
0.60
CN=
82
Weighted CN:
C= 0.30
Weighted C:
89.5
lent:
1.19 ac Tc
=
5.00 min
Qat
Wt. CN =
Rational Method
Site Area =
0.20 ac Tc
=
5.00 min
50% Creedmoor (Type C),
Qal
= 0.88 cfs
Wt. CN =
98.0
I5=
6.5 in/hr
Qat
= 1.09 cfs
Site Soils:
50% Creedmoor (Type C),
50% White Store (D)
Wooded Area:
Qa5
= 1.24 cfs
I1=
4.65 in/hr
I5=
6.5 in/hr
0.39 ac
Qa10
= 1.37 cfs
I2=
5.74 in/hr
I10=
7.22 in/hr
82
Weighted C:
Wooded Area:
0.00 ac
CN=
76
C= 0.20
Impervious Area:
0.20 ac
CN=
98
C= 0.95
Lawn Area:
0.00 ac
CN=
82
C= 0.30
Weighted C:
0.95
Weighted CN:
98.0
Site Area =
1.19 ac Tc
=
5.00 min
Qat
Wt. CN =
87.2
= 3.97 cfs
Qa10
= 4.41 cfs
Site Soils:
50% Creedmoor (Type C),
50% White Store (D)
C= 0.95
I1=
4.65 in/hr
I5=
6.5 in/hr
I2=
5.74 in/hr
I10=
7.22 in/hr
Wooded Area:
0.00 ac
CN=
76
Impervious Area:
0.39 ac
CN=
98
Lawn Area:
0.80 ac
CN=
82
Weighted C:
0.51
Weighted CN:
87.2
Rational Method
Qal
= 2.84 cfs
Qat
= 3.50 cfs
Qa5
= 3.97 cfs
Qa10
= 4.41 cfs
C= 0.20
C= 0.95
C= 0.30

rIECT
DATE
2-2-17ME PROJECT NO School 15-188 BY
Cary, NC KAL
lent:
0.96 ac Tc
=
5.00 min
Qat
Rational Method
Site Area =
10.45 ac Tc =
5.00 min
=
Qal
= 27.57 cfs
Wt. CN =
88.6
Wt. CN =
98.0
Qat
= 38.55 cfs
Site Soils:
50% Creedmoor (Type C),
50% White Store (D)
Site Soils:
Qa5
= 0.00 cfs
I1=
4.65 in/hr
= 1.24 cfs
I1=
Qa10
= 0.00 cfs
I10=
6.50 in/hr
Qa10
= 1.37 cfs
I2=
5.74 in/hr
Wooded Area:
0.00 ac
CN=
76
C= 0.20
Impervious Area:
4.30 ac
CN=
98
C= 0.95
Lawn Area:
6.15 ac
CN=
82
98
C= 0.30
Weighted C:
Lawn Area:
0.57
CN=
82
Weighted CN:
C= 0.30
Weighted C:
88.6
lent:
0.96 ac Tc
=
5.00 min
Qat
Wt. CN =
Rational Method
Site Area =
0.20 ac Tc
=
5.00 min
50% Creedmoor (Type C),
Qal
= 0.88 cfs
Wt. CN =
98.0
I5=
6.5 in/hr
Qat
= 1.09 cfs
Site Soils:
50% Creedmoor (Type C),
50% White Store (D)
Wooded Area:
Qa5
= 1.24 cfs
I1=
4.65 in/hr
I5=
6.5 in/hr
0.08 ac
Qa10
= 1.37 cfs
I2=
5.74 in/hr
I10=
7.22 in/hr
82
Weighted C:
Wooded Area:
0.00 ac
CN=
76
C= 0.20
Impervious Area:
0.20 ac
CN=
98
C= 0.95
Lawn Area:
0.00 ac
CN=
82
C= 0.30
Weighted C:
0.95
Weighted CN:
98.0
Site Area =
0.96 ac Tc
=
5.00 min
Qat
Wt. CN =
82.1
= 2.08 cfs
Qa10
= 2.31 cfs
Site Soils:
50% Creedmoor (Type C),
50% White Store (D)
C= 0.95
I1=
4.65 in/hr
I5=
6.5 in/hr
I2=
5.74 in/hr
I10=
7.22 in/hr
Wooded Area:
0.20 ac
CN=
76
Impervious Area:
0.08 ac
CN=
98
Lawn Area:
0.68 ac
CN=
82
Weighted C:
0.33
Weighted CN:
82.1
Rational Method
Qal
= 1.49 cfs
Qat
= 1.84 cfs
Qa5
= 2.08 cfs
Qa10
= 2.31 cfs
C= 0.20
C= 0.95
C= 0.30

111,
0 : � �� � ��jiDATE
F11 Ll FAI 2-2-17
PROJECT NAME PROJECT NO
M16 Middle School 15-188
LOCATION BY
Cary, NC KAL
Pre -development
Q 1=
10.62 cfs
Q 2=
13.11 cfs
Q 5=
14.84 cfs
Q 10=
16.49 cfs
Site -Bypass
Q 1=
5.78 cfs
Q 2=
7.14 cfs
Q 5=
8.09 cfs
Q 10=
8.98 cfs
Pond Off-site
Q 1=
0.00 cfs
Q 2=
0.00 cfs
Q 5=
0.00 cfs
Q 10=
0.00 cfs
Total Allowable
(Pre -development - Area Bypass + Pond Offsite Area)
Q 1=
4.83 cfs
Q 2=
5.97 cfs
Q 5=
6.76 cfs
Q 10=
7.51 cfs
NO CHANGE WITH MIDDLE SCHOOL PROJECT

DATE
'
2-2-17
PROJECT NAME
PROJECT NO
M16 Middle School
15-188
LOCATION
BY
Cary, NC
KAL
Allowable
I 11
1 i
Pre-development:
Q1=
5.35 cfs
Q 2=
6.60 cfs
Q 5=
7.48 cfs
Q 10=
8.31 cfs
Site-Bypass
Q1=
2.84 cfs
Q 2=
3.50 cfs
Q 5=
3.97 cfs
Q 10=
4.41 cfs
Pond Off-site
Q 1=
0.88 cfs
Q 2=
1.09 cfs
Q 5=
1.24 cfs
Q 10=
1.37 cfs
Total Allowable
(Pre-development - Area Bypass + Pond Offsite Area)
Q 1=
3.39 cfs
Q 2=
4.19 cfs
Q 5=
4.74 cfs
Q 10=
5.27 cfs
Discharge from BMP
Q 1=
0.18 cfs
Q 2=
0.59 cfs
Q 5=
2.29 cfs
Q 10=
4.59 cfs
Total Discharge from
Area
Q 1=
2.13 cfs
Q 2=
3.00 cfs
Q 5=
5.02 cfs
Q 10=
7.63 cfs

BMP Design Et Routing

DATE
12-5-16
PROJECT NAME PROJECT NO
M-16 Middle School 15-188
LOCATION BY
Cary, NC ARL
Drainage Area, (DA) = 6.43 ac
Impervious Area c= 0.95 4.17 ac
Pervious Area c= 0.35 2.26 ac
Cc = 0.74
Wetland Surface Area & Volume
% Impervious = 65%
Design Storm Rainfall 1.00 in
Runoff Coeff. (Rv = 0.05 + 0.009 (% Imperv.)) = 0.63 in/in
Required Volume (design rainfall)(Rv)(DA) = 14,790 cf (3,630 cf minimum req.)
Depth of Temporary Pool (Dplants) = 12 in (12 -in max)
Approx. Ave. Surface Area for Design = 14,790 sf
Surface Area at Permanent Pool= 10,645 sf @ # in. ponding
Surface Area at 1/2 Depth= 16,300 sf @ # in. ponding
Surface Area at Temporary Pool= 17,060 sf @ # in. ponding
Temporary Ponding Volume Provided= 15,076 cf > 14,790 cf OK
Temp. Storage Depth above Dewatering Hole = 1.0 ft
Diameter of Dewatering Hole = 1.75 in
Detention (Draw -Down) Time = 3.8 days
T days=(Req. Temp. Storage Vol / (0.6 * A * (2*g*(h))^1/2) * 86400
(where h = one third temp. storage depth measured to centroid of orifice)
Wetland Zones Required
Forebay surface area required (10-15%) =
1706 -
2559 sf
Deep pool, non-forebay (5-10%) =
853 -
1706 sf
Shallow water (low marsh) req'd (38-42%) =
6483 -
7165 sf
Shallow land (high marsh) req'd (30-40%) =
5118 -
6824 sf
Wetland Zones Provided
Forebay surface area * =
2,335 sf
14%
OK
Deep pool at outlet =
1,280 sf
8%
OK
Deep pool (not Forebay or Outlet) =
340 sf
2%
Shallow water (low marsh) =
6,690 sf
39%
OK
Shallow land (high marsh) =
6,415 sf
38%
OK
s:\1319\0001\calcs\15-188 PondSize-Wetland-2015 printed: 2/9/2017 12:40 PM Page 1 of 4

DATE
25 -Aug -16
PROJECT NAME PROJECT NO
M-16 Middle School 15-188
LOCATION BY
Cary, NC ARL
Drainage Area, (DA) = 8.30 ac
Impervious Area c= 0.95 3.73 ac
Pervious Area c= 0.35 4.57 ac
Cc = 0.62
Wetland Surface Area & Volume
% Impervious = 45%
Design Storm Rainfall 1.00 in
Runoff Coeff. (Rv = 0.05 + 0.009 (% Imperv.)) = 0.45 in/in
Required Volume (design rainfall)(Rv)(DA) = 13,692 cf (3,630 cf minimum req.)
Depth of Temporary Pool (Dplants) = 12 in (12 -in max)
Approx. Ave. Surface Area for Design = 13,692 sf
Surface Area at Permanent Pool= 10,060 sf @ # in. ponding
Surface Area at 1/2 Depth= 15,300 sf @ # in. ponding
Surface Area at Temporary Pool= 16,080 sf @ # in. ponding
Temporary Ponding Volume Provided= 14,185 cf > 13,692 cf OK
Temp. Storage Depth above Dewatering Hole = 1.0 ft
Diameter of Dewatering Hole = 1.75 in
Detention (Draw -Down) Time = 3.5 days
T days=(Req. Temp. Storage Vol / (0.6 * A * (2*g*(h))^1/2) * 86400
(where h = one third temp. storage depth measured to centroid of orifice)
Wetland Zones Required
Forebay surface area required (10-15%) =
1608 -
2412 sf
Deep pool, non-forebay (5-10%) =
804 -
1608 sf
Shallow water (low marsh) req'd (38-42%) =
6110 -
6754 sf
Shallow land (high marsh) req'd (30-40%) =
4824 -
6432 sf
Wetland Zones Provided
Forebay surface area * =
2,120 sf
13%
OK
Deep pool at outlet =
1,240 sf
8%
OK
Deep pool (not Forebay or Outlet) =
340 sf
2%
Shallow water (low marsh) =
6,360 sf
40%
OK
Shallow land (high marsh) =
6,020 sf
37%
OK
s:\1319\0001\calcs\15-188 PondSize-Wetland-2015 printed: 2/9/2017 12:40 PM Page 2 of 4

DATE
2-2-17 � /J
PROJECT NAME PROJECT NO
M-16 Middle School 15-188
LOCATION BY
Cary, NC ARL
Drainage Area, (DA) = 12.99 ac
Impervious Area c= 0.95 4.63 ac
Pervious Area c= 0.35 8.36 ac
Cc = 0.56
Wetland Surface Area & Volume
% Impervious = 36 %
Design Storm Rainfall 1.00 in
Runoff Coeff. (Rv = 0.05 + 0.009 (% Imperv.)) = 0.37 in/in
Required Volume (design rainfall)(Rv)(DA) = 17,484 cf (3,630 cf minimum req.)
Depth of Temporary Pool (Dplants) = 12 in (12 -in max)
Approx. Ave. Surface Area for Design = 17,484 sf
Surface Area at Permanent Pool= 12,400 sf @ # in. ponding
Surface Area at 1/2 Depth= 19,160 sf @ # in. ponding
Surface Area at Temporary Pool= 20,580 sf @ # in. ponding
Temporary Ponding Volume Provided= 17,825 cf > 17,484 cf OK
Temp. Storage Depth above Dewatering Hole = 1.0 ft
Diameter of Dewatering Hole = 2.00 in
Detention (Draw -Down) Time = 3.5 days
T days=(Req. Temp. Storage Vol / (0.6 * A * (2*g*(h))^1/2) * 86400
(where h = one third temp. storage depth measured to centroid of orifice)
Wetland Zones Required
Forebay surface area required (10-15%) =
2058 -
3087 sf
Deep pool, non-forebay (5-10%) =
1029 -
2058 sf
Shallow water (low marsh) req'd (38-42%) =
7820 -
8644 sf
Shallow land (high marsh) req'd (30-40%) =
6174 -
8232 sf
Wetland Zones Provided
Forebay surface area * =
2,870 sf
14%
OK
Deep pool at outlet =
1,100 sf
5%
OK
Deep pool (not Forebay or Outlet) =
340 sf
2%
Shallow water (low marsh) =
8,090 sf
39%
OK
Shallow land (high marsh) =
8,180 sf
40%
OK
s:\1319\0001\calcs\15-188 PondSize-Wetland-2015 printed: 2/9/2017 12:40 PM Page 3 of 4

DATE
12-5-16
PROJECT NAME PROJECT NO
M-16 Middle School 15-188
LOCATION BY
Cary, NC ARL
Drainage Area, (DA) = 10.34 ac
Impervious Area c= 0.95 4.93 ac
Pervious Area c= 0.30 5.41 ac
Cc = 0.61
Wetland Surface Area & Volume
% Impervious = 48%
Design Storm Rainfall 1.00 in
Runoff Coeff. (Rv = 0.05 + 0.009 (% Imperv.)) = 0.48 in/in
Required Volume (design rainfall)(Rv)(DA) = 17,983 cf (3,630 cf minimum req.)
Depth of Temporary Pool (Dplants) = 12 in (12 -in max)
Approx. Ave. Surface Area for Design = 17,983 sf
Surface Area at Permanent Pool= 13,040 sf @ # in. ponding
Surface Area at 1/2 Depth= 19,800 sf @ # in. ponding
Surface Area at Temporary Pool= 20,980 sf @ # in. ponding
Temporary Ponding Volume Provided= 18,405 cf > 17,983 cf OK
Temp. Storage Depth above Dewatering Hole = 1.0 ft
Diameter of Dewatering Hole = 2.00 in
Detention (Draw -Down) Time = 3.6 days
T days=(Req. Temp. Storage Vol / (0.6 * A * (2*g*(h))^1/2) * 86400
(where h = one third temp. storage depth measured to centroid of orifice)
Wetland Zones Required
Forebay surface area required (10-15%) =
2098 -
3147 sf
Deep pool, non-forebay (5-10%) =
1049 -
2098 sf
Shallow water (low marsh) req'd (38-42%) =
7972 -
8812 sf
Shallow land (high marsh) req'd (30-40%) =
6294 -
8392 sf
Wetland Zones Provided
Forebay surface area * =
2,480 sf
12%
OK
Deep pool at outlet =
1,460 sf
7%
OK
Deep pool (not Forebay or Outlet) =
340 sf
2%
Shallow water (low marsh) =
8,400 sf
40%
OK
Shallow land (high marsh) =
8,300 sf
40%
OK
s:\1319\0001\calcs\15-188 PondSize-Wetland-2015 printed: 2/9/2017 12:40 PM Page 4 of 4

Hydrograph Summary Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3
Hyd.
No.
Hydrograph
type
(origin)
Peak
flow
(cfs)
Time
interval
(min)
Time to
Peak
(min)
Hyd.
volume
(cuft)
Inflow
hyd(s)
Maximum
elevation
(ft)
Total
strge used
(cuft)
Hydrograph
Description
1
SCS Runoff
33.14
2
716
67,958
------
------
------
Area to Ex ES to Pre BMP B
2
Reservoir
1.735
2
776
57,359
1
283.30
40,365
Route Exist BMP B
4
SCS Runoff
33.29
2
716
68,620
------
------
------
Area to New ES BMP B
5
Reservoir
0.182
2
1442
46,422
4
282.81
60,609
Route New ES BMP B
7
SCS Runoff
22.27
2
716
46,693
------
------
------
Area to MS BMP M1
8
Reservoir
3.501
2
726
44,660
7
263.55
24,825
Route BMP M1
10
SCS Runoff
25.04
2
716
51,130
------
------
------
Area to MS BMP M2
11
Reservoir
2.329
2
744
49,321
10
253.76
27,026
Route BMP M2
13
SCS Runoff
36.86
2
716
74,834
------
------
------
Area to MS BMP M3
14
Reservoir
6.235
2
726
72,844
13
266.81
35,645
Route BMP M3
15 -188 -PRE -POST -2nd SP.gpw
Return Period: 1 Year
Thursday, 02 / 9 / 2017

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3 Thursday, 02 / 9 / 2017
Hyd. No. 1
Area to Ex ES to Pre BMP B
Hydrograph type
= SCS Runoff
Peak discharge
= 33.14 cfs
Storm frequency
= 1 yrs
Time to peak
= 716 min
Time interval
= 2 min
Hyd. volume
= 67,958 cuft
Drainage area
= 10.650 ac
Curve number
= 88.7
Basin Slope
= 0.0%
Hydraulic length
= 0 ft
Tc method
= User
Time of conc. (Tc)
= 5.00 min
Total precip.
= 3.00 in
Distribution
= Type II
Storm duration
= 24 hrs
Shape factor
= 484
Q (cfs)
35.00
30.00
25.00
15.00
10.00
5.00
Area to Ex ES to Pre BMP B
Hyd. No. 1 -- 1 Year
Q (cfs)
35.00
30.00
25.00
20.00
15.00
10.00
5.00
0.00 0.00
0 120 240 360 480 600 720 840 960 1080 1200 1320
Hyd No. 1 Time (min)

I
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3 Thursday, 02 / 9 / 2017
Hyd. No. 2
Route Exist BMP B
Hydrograph type
= Reservoir Peak discharge
= 1.735 cfs
Storm frequency
= 1 yrs Time to peak
= 776 min
Time interval
= 2 min Hyd. volume
= 57,359 cuft
Inflow hyd. No.
= 1 - Area to Ex ES to Pre BMP Blax. Elevation
= 283.30 ft
Reservoir name
= Ex Asbuilt ES BMP B -Original g8torage
= 40,365 cuft
Storage Indication method used.
Q (cfs)
35.00
30.00
25.00
15.00
10.00
5.00
0.00
0 600
Hyd No. 2
Route Exist BMP B
Hyd. No. 2 -- 1 Year
Q (cfs)
35.00
30.00
25.00
20.00
15.00
10.00
5.00
' 0.00
1200 1800 2400 3000 3600 4200 4800 5400 6000
Time (min)
Hyd No. 1 1777771 Total storage used = 40,365 cuft

Pond Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3
Thursday, 02 / 9 / 2017
Pond No. 1 - Ex Asbuilt ES BMP B -Original Design
Pond Data
[B]
[C]
Contours -User-defined contour areas. Average end area method used for volume calculation. Begining Elevation = 282.00 ft
Stage / Storage Table
= 36.00
2.00
Stage (ft) Elevation (ft) Contour area (sqft)
Incr. Storage (cuft)
Total storage (cuft)
0.00 282.00 25,155
0
0
0.50 282.50 31,072
14,057
14,057
1.00 283.00 32,888
15,990
30,047
2.00 284.00 36,578
34,733
64,780
3.00 285.00 40,345
38,462
103,241
4.00 286.00 44,189
42,267
145,508
Culvert / Orifice Structures
[A]
[B]
[C]
[PrfRsr]
Rise (in)
= 36.00
2.00
Inactive
0.00
Span (in)
= 36.00
2.00
6.00
0.00
No. Barrels
= 1
1
1
0
Invert EI. (ft)
= 280.03
282.00
283.00
0.00
Length (ft)
= 68.00
0.67
0.67
0.00
Slope (%)
= 0.98
0.00
0.00
n/a
N -Value
= .013
.013
.013
n/a
Orifice Coeff.
= 0.60
0.60
0.60
0.60
Multi -Stage
= n/a
Yes
Yes
No
Stage (ft)
4.00
3.00
f ailel
ifrPl
0.00 T '
0.00 8.00
Total Q
Weir Structures
[A]
[B]
[C]
[D]
Crest Len (ft)
= 17.00
3.00
12.00
0.00
Crest EI. (ft)
= 285.56
283.00
285.29
0.00
Weir Coeff.
= 3.33
3.33
2.60
3.33
Weir Type
= 1
Rect
Broad
---
Multi-Stage
= Yes
Yes
No
No
Exfil.(in/hr)
= 0.000 (by
Wet area)
TW Elev. (ft)
= 0.00
Note: Culvert/Orifice outflows are analyzed under inlet (ic) and outlet (oc) control. Weir risers checked for orifice conditions (ic) and submergence (s).
Stage / Discharge
16.00 24.00 32.00 40.00 48.00 56.00
Elev (ft)
286.00
285.00
W*Y191I11
283.00
282.00
64.00 72.00 80.00
Discharge (cfs)

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10."
Hyd. No. 4
Time to peak
Area to New ES BMP B
Hyd. volume
Hydrograph type
= SCS Runoff
Storm frequency
= 1 yrs
Time interval
= 2 min
Drainage area
= 10.340 ac
Basin Slope
= 0.0%
Tc method
= User
Total precip.
= 3.00 in
Storm duration
= 24 hrs
Q (cfs)
35.00
30.00
25.00
15.00
10.00
5.00
Thursday, 02 / 9 / 2017
Peak discharge
= 33.29 cfs
Time to peak
= 716 min
Hyd. volume
= 68,620 cuft
Curve number
= 89.6
Hydraulic length
= 0 ft
Time of conc. (Tc)
= 5.00 min
Distribution
= Type II
Shape factor
= 484
Area to New ES BMP B
Hyd. No. 4 -- 1 Year
Q (cfs)
35.00
30.00
25.00
20.00
15.00
10.00
5.00
0.00 0.00
0 120 240 360 480 600 720 840 960 1080 1200 1320
Hyd No. 4 Time (min)

1
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3 Thursday, 02 / 9 / 2017
Hyd. No. 5
Route New ES BMP B
Hydrograph type
= Reservoir
Peak discharge
= 0.182 cfs
Storm frequency
= 1 yrs
Time to peak
= 1442 min
Time interval
= 2 min
Hyd. volume
= 46,422 cuft
Inflow hyd. No.
= 4 - Area to New ES BMP B
Max. Elevation
= 282.81 ft
Reservoir name
= New ES BMP B
Max. Storage
= 60,609 cuft
Storage Indication method used.
Q (cfs)
35.00
30.00
25.00
15.00
10.00
5.00
0.00
0 600
Hyd No. 5
Route New ES BMP B
Hyd. No. 5 -- 1 Year
Q (cfs)
35.00
30.00
25.00
20.00
15.00
10.00
5.00
0.00
1200 1800 2400 3000 3600 4200 4800 5400 6000
Time (min)
Hyd No. 4 177777 Total storage used = 60,609 cuft

Pond Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3
Thursday, 02 / 9 / 2017
Pond No. 5 - New ES BMP B
[A]
Pond Data
[C]
[PrfRsr]
Rise (in)
Contours -User-defined contour areas. Conic method used for volume
calculation. Begining
Elevation = 280.00 ft
Stage / Storage Table
Span (in)
= 30.00
2.00
Stage (ft) Elevation (ft)
Contour area (sqft)
Incr. Storage (cuft)
Total storage (cuft)
0.00 280.00
13,040
0
0
0.50 280.50
19,800
8,151
8,151
1.00 281.00
20,980
10,193
18,343
2.00 282.00
23,510
22,231
40,574
3.00 283.00
26,070
24,777
65,350
4.00 284.00
28,710
27,377
92,727
5.00 285.00
31,430
30,057
122,784
6.00 286.00
34,240
32,822
155,606
Culvert / Orifice Structures
[A]
[B]
[C]
[PrfRsr]
Rise (in)
= 30.00
2.00
0.50
0.00
Span (in)
= 30.00
2.00
0.50
0.00
No. Barrels
= 1
1
1
0
Invert El. (ft)
= 276.00
280.00
281.00
0.00
Length (ft)
= 66.00
0.50
0.50
0.00
Slope (%)
= 3.00
0.00
0.00
n/a
N -Value
= .013
.013
.013
n/a
Orifice Coeff.
= 0.60
0.60
0.60
0.60
Multi -Stage
= n/a
Yes
Yes
No
Stage (ft)
6.00
5.00
4.00
3.00
2.00
1.00
0.00 ?
0.00
Weir Structures
[A]
[B]
[C]
[D]
Crest Len (ft)
= 23.50
1.50
8.00
0.00
Crest EI. (ft)
= 284.00
283.00
285.00
0.00
Weir Coeff.
= 3.33
3.33
2.60
3.33
Weir Type
= 1
Rect
Broad
---
Multi-Stage
= Yes
Yes
No
No
Exfil.(in/hr)
= 0.000 (by
Wet area)
TW Elev. (ft)
= 0.00
Note: Culvert/Orifice outflows are analyzed under inlet (ic) and outlet (oc) control. Weir risers checked for orifice conditions (ic) and submergence (s).
Stage / Discharge
Elev (ft)
286.00
285.00
284.00
283.00
282.00
281.00
' ' ' ' ' ' ' 280.00
9.00 18.00 27.00 36.00 45.00 54.00 63.00 72.00 81.00 90.00 99.00
Total Q Discharge (cfs)

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3 Thursday, 02 / 9 / 2017
Hyd. No. 7
Area to MS BMP M1
Hydrograph type
= SCS Runoff
Peak discharge
= 22.27 cfs
Storm frequency
= 1 yrs
Time to peak
= 716 min
Time interval
= 2 min
Hyd. volume
= 46,693 cuft
Drainage area
= 6.430 ac
Curve number
= 91.7
Basin Slope
= 0.0%
Hydraulic length
= 0 ft
Tc method
= User
Time of conc. (Tc)
= 5.00 min
Total precip.
= 3.00 in
Distribution
= Type II
Storm duration
= 24 hrs
Shape factor
= 484
Q (cfs)
24.00
20.00
16.00
12.00
0110
4.00
Area to MS BMP M1
Hyd. No. 7 -- 1 Year
Q (cfs)
24.00
20.00
16.00
12.00
M
4.00
0.00 0.00
0 120 240 360 480 600 720 840 960 1080 1200 1320
Hyd No. 7 Time (min)

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3
Thursday, 02 / 9 / 2017
Hyd. No. 8
Route BMP M1
Hydrograph type
= Reservoir
Peak discharge
= 3.501 cfs
Storm frequency
= 1 yrs
Time to peak
= 726 min
Time interval
= 2 min
Hyd. volume
= 44,660 cuft
Inflow hyd. No.
= 7 - Area to MS BMP M1
Max. Elevation
= 263.55 ft
Reservoir name
= BMP M1
Max. Storage
= 24,825 cuft
Storage Indication method used.
Route BMP M1
Q (cfs) Hyd. No. 8 -- 1 Year Q (cfs)
24.00 24.00
20.00 20.00
16.00 16.00
12.00 12.00
8.00 8.00
4.00 4.00
0.00 0.00
0 480 960 1440 1920 2400 2880 3360 3840 4320 4800 5280
Time (min)
Hyd No. 8 Hyd No. 7 177777 Total storage used = 24,825 cuft

Pond Report 10
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3
Thursday, 02 / 9 / 2017
Pond No. 7 -
BMP M1
Pond Data
Contours -User-defined contour areas. Conic method used
for volume calculation. Begining Elevation = 262.00 ft
Stage / Storage Table
Stage (ft)
Elevation (ft)
Contour area
(sqft)
Incr. Storage (cuft)
Total storage (cuft)
0.00
262.00
10,645
0
0
0.50
262.50
16,300
6,686
6,686
1.00
263.00
17,060
8,338
15,024
2.00
264.00
18,620
17,833
32,857
3.00
265.00
20,240
19,422
52,279
4.00
266.00
21,910
21,067
73,346
5.00
267.00
25,430
23,646
96,992
Culvert / Orifice Structures
Weir Structures
[A]
[B]
[C]
[PrfRsr]
[A] [B]
[C] [D]
Rise (in)
= 30.00
1.75
Inactive
0.00
Crest Len (ft)
= 22.50 2.50
Inactive 0.00
Span (in)
= 30.00
1.75
12.00
0.00
Crest EI. (ft)
= 265.00 263.00
268.00 0.00
No. Barrels
= 1
1
2
0
Weir Coeff.
= 3.33 3.33
2.60 3.33
Invert EI. (ft)
= 259.00
262.00
263.00
0.00
Weir Type
= 1 Rect
Broad ---
Length (ft)
= 162.00
0.50
0.50
0.00
Multi -Stage
= Yes Yes
No No
Slope (%)
= 0.61
0.00
0.00
n/a
N -Value
= .013
.013
.013
n/a
Orifice Coeff.
= 0.60
0.60
0.60
0.60
Exfil.(in/hr)
= 0.000 (by Wet area)
Multi -Stage
= n/a
Yes
Yes
No
TW Elev. (ft)
= 0.00
Stage (ft)
5.00
4.00
3.00
2.00
1.00
0.00
0.00 6.00
Total Q
Note: Culvert/Orifice outflows are analyzed under inlet (ic) and outlet (oc) control. Weir risers checked for orifice conditions (ic) and submergence (s)
Stage / Discharge
12.00 18.00 24.00 30.00
Elev (ft)
267.00
266.00
265.00
264.00
263.00
262.00
36.00 42.00 48.00 54.00 60.00
Discharge (cfs)

11
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3 Thursday, 02 / 9 / 2017
Hyd. No. 10
Area to MS BMP M2
Hydrograph type
= SCS Runoff
Peak discharge
= 25.04 cfs
Storm frequency
= 1 yrs
Time to peak
= 716 min
Time interval
= 2 min
Hyd. volume
= 51,130 cuft
Drainage area
= 8.300 ac
Curve number
= 87.9*
Basin Slope
= 0.0%
Hydraulic length
= 0 ft
Tc method
= User
Time of conc. (Tc)
= 5.00 min
Total precip.
= 3.00 in
Distribution
= Type II
Storm duration
= 24 hrs
Shape factor
= 484
" Composite (Area/CN) = [(4.510 x 80) + (3.800 x 98)] / 8.300
Q (cfs)
28.00
24.00
20.00
16.00
12.00
4.00
Area to MS BMP M2
Hyd. No. 10 -- 1 Year
Q (cfs)
28.00
24.00
20.00
16.00
12.00
M
4.00
0.00 0.00
0 120 240 360 480 600 720 840 960 1080 1200 1320
Hyd No. 10 Time (min)

12
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3 Thursday, 02 / 9 / 2017
Hyd. No. 11
Route BMP M2
Hydrograph type
= Reservoir
Peak discharge
= 2.329 cfs
Storm frequency
= 1 yrs
Time to peak
= 744 min
Time interval
= 2 min
Hyd. volume
= 49,321 cuft
Inflow hyd. No.
= 10 - Area to MS BMP M2
Max. Elevation
= 253.76 ft
Reservoir name
= BMP M2
Max. Storage
= 27,026 cuft
Storage Indication method used.
Q (cfs)
28.00
24.00
20.00
16.00
12.00
F-1011
4.00
Route BMP M2
Hyd. No. 11 -- 1 Year
Q (cfs)
28.00
24.00
20.00
16.00
12.00
4.00
0.00 ' ' ' ' ' ' ' ' 0.00
0 600 1200 1800 2400 3000 3600 4200 4800 5400 6000
Time (min)
Hyd No. 11 Hyd No. 10 1777771 Total storage used = 27,026 cuft

Pond Report
13
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3
Thursday, 02 / 9 / 2017
Pond No. 8 - BMP M2
[A]
Pond Data
[C]
[PrfRsr]
Rise (in)
Contours -User-defined contour areas.
Conic method used for volume
calculation. Begining
Elevation = 252.00 ft
Stage / Storage Table
= 30.00
1.75
6.00
Stage (ft) Elevation (ft)
Contour area (sqft)
Incr. Storage (cuft)
Total storage (cuft)
0.00 252.00
10,060
0
0
0.50 252.50
15,300
6,294
6,294
1.00 253.00
16,080
7,843
14,137
2.00 254.00
17,700
16,882
31,019
3.00 255.00
19,380
18,532
49,551
4.00 256.00
21,110
20,237
69,788
5.00 257.00
22,900
21,997
91,784
6.00 258.00
24,750
23,817
115,601
Culvert / Orifice Structures
[A]
[B]
[C]
[PrfRsr]
Rise (in)
= 30.00
1.75
Inactive
0.00
Span (in)
= 30.00
1.75
6.00
0.00
No. Barrels
= 1
1
1
0
Invert El. (ft)
= 249.00
252.00
253.00
0.00
Length (ft)
= 148.00
0.50
0.50
0.00
Slope (%)
= 1.20
0.00
0.00
n/a
N -Value
= .013
.013
.013
n/a
Orifice Coeff.
= 0.60
0.60
0.60
0.60
Multi -Stage
= n/a
Yes
Yes
No
Stage (ft)
6.00
5.00
4.00
3.00
2.00
1.00
0.00 �
0.00
7.00
Total Q
Weir Structures
[A]
[B]
[C]
[D]
Crest Len (ft)
= 24.00
1.00
Inactive
0.00
Crest EI. (ft)
= 255.50
253.00
256.00
0.00
Weir Coeff.
= 3.33
3.33
2.60
3.33
Weir Type
= 1
Rect
Broad
---
Multi-Stage
= Yes
Yes
No
No
Exfil.(in/hr)
= 0.000 (by
Wet area)
TW Elev. (ft)
= 0.00
Note: Culvert/Orifice outflows are analyzed under inlet (ic) and outlet (oc) control. Weir risers checked for orifice conditions (ic) and submergence (s).
Stage / Discharge
Elev (ft)
258.00
257.00
256.00
255.00
254.00
253.00
' ' ' ' ' ' 252.00
14.00 21.00 28.00 35.00 42.00 49.00 56.00 63.00 70.00
Discharge (cfs)

Hydrograph
Report
14
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3
Thursday, 02 / 9 / 2017
Hyd. No. 13
Area to MS BMP M3
Hydrograph type
= SCS Runoff
Peak discharge
= 36.86 cfs
Storm frequency
= 1 yrs
Time to peak
= 716 min
Time interval
= 2 min
Hyd. volume
= 74,834 cuft
Drainage area
= 12.990 ac
Curve number
= 86.4
Basin Slope
= 0.0%
Hydraulic length
= 0 ft
Tc method
= User
Time of conc. (Tc)
= 5.00 min
Total precip.
= 3.00 in
Distribution
= Type II
Storm duration
= 24 hrs
Shape factor
= 484
Area to MS BMP M3
Q (cfs) Hyd. No. 13 -- 1 Year Q (cfs)
40.00 40.00
30.00 30.00
20.00 20.00
10.00 10.00
0.00 0.00
0 120 240 360 480 600 720 840 960 1080 1200 1320 1440
Hyd No. 13 Time (min)

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3
Hyd. No. 14
Route BMP M3
Hydrograph type
= Reservoir
Peak discharge
Storm frequency
= 1 yrs
Time to peak
Time interval
= 2 min
Hyd. volume
Inflow hyd. No.
= 13 - Area to MS BMP M3
Max. Elevation
Reservoir name
= BMP M3
Max. Storage
Storage Indication method used.
Q (cfs)
40.00
30.00
20.00
10.00
Route BMP M3
Hyd. No. 14 -- 1 Year
15
Thursday, 02 / 9 / 2017
= 6.235 cfs
= 726 min
= 72,844 cuft
= 266.81 ft
= 35,645 cuft
0.00 ' ' ' ' '
0 360 720 1080 1440 1800 2160 2520 2880 3240 3600
Hyd No. 14 Hyd No. 13 1777771 Total storage used = 35,645 cuft
Q (cfs)
40.00
30.00
20.00
10.00
---� 0.00
3960
Time (min)

Pond Report
16
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3
Thursday, 02 / 9 / 2017
Pond No. 9 - BMP M3
[A]
Pond Data
[C]
[PrfRsr]
Rise (in)
Contours -User-defined contour areas.
Conic method used for volume
calculation. Begining
Elevation = 265.00 ft
Stage / Storage Table
= 30.00
2.00
15.00
Stage (ft) Elevation (ft)
Contour area (sqft)
Incr. Storage (cuft)
Total storage (cuft)
0.00 265.00
12,400
0
0
0.50 265.50
19,160
7,828
7,828
1.00 266.00
20,580
9,932
17,760
2.00 267.00
23,500
22,022
39,782
3.00 268.00
26,480
24,973
64,754
4.00 269.00
27,570
27,020
91,775
5.00 270.00
35,500
31,448
123,223
6.00 271.00
38,830
37,149
160,372
Culvert / Orifice Structures
[A]
[B]
[C]
[PrfRsr]
Rise (in)
= 30.00
2.00
Inactive
0.00
Span (in)
= 30.00
2.00
15.00
0.00
No. Barrels
= 1
1
2
0
Invert El. (ft)
= 262.00
265.00
266.00
0.00
Length (ft)
= 64.00
0.50
0.50
0.00
Slope (%)
= 1.56
0.00
0.00
n/a
N -Value
= .013
.013
.013
n/a
Orifice Coeff.
= 0.60
0.60
0.60
0.60
Multi -Stage
= n/a
Yes
Yes
No
Stage (ft)
6.00
5.00
4.00
3.00
2.00
1.00
0.00 ?
0.0
Weir Structures
[A]
[B]
[C]
[D]
Crest Len (ft)
= 22.50
2.50
8.00
Inactive
Crest EI. (ft)
= 268.50
266.00
269.50
266.00
Weir Coeff.
= 3.33
3.33
2.60
3.33
Weir Type
= 1
Rect
Broad
Rect
Multi -Stage
= Yes
Yes
No
Yes
Exfil.(in/hr)
= 0.000 (by
Contour)
TW Elev. (ft)
= 0.00
Note: Culvert/Orifice outflows are analyzed under inlet (ic) and outlet (oc) control. Weir risers checked for orifice conditions (ic) and submergence (s).
Stage / Discharge
Elev (ft)
271.00
270.00
269.00
268.00
267.00
266.00
' ' ' ' ' ' ' 265.00
10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.0 100.0 110.0
Total Q Discharge (cfs)

17
Hydrograph Summary Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3
Hyd.
No.
Hydrograph
type
(origin)
Peak
flow
(cfs)
Time
interval
(min)
Time to
Peak
(min)
Hyd.
volume
(cuft)
Inflow
hyd(s)
Maximum
elevation
(ft)
Total
strge used
(cuft)
Hydrograph
Description
1
SCS Runoff
42.35
2
716
87,803
------
------
------
Area to Ex ES to Pre BMP B
2
Reservoir
4.025
2
744
77,108
1
283.53
48,558
Route Exist BMP B
4
SCS Runoff
42.24
2
716
88,134
------
------
------
Area to New ES BMP B
5
Reservoir
0.585
2
1084
61,504
4
283.18
70,291
Route New ES BMP B
7
SCS Runoff
27.84
2
716
59,154
------
------
------
Area to MS BMP M1
8
Reservoir
6.824
2
724
57,093
7
263.87
30,465
Route BMP M1
10
SCS Runoff
32.19
2
716
66,412
------
------
------
Area to MS BMP M2
11
Reservoir
4.316
2
730
64,567
10
254.17
34,111
Route BMP M2
13
SCS Runoff
47.96
2
716
98,183
------
------
------
Area to MS BMP M3
14
Reservoir
11.67
2
724
96,171
13
267.24
45,803
Route BMP M3
15 -188 -PRE -POST -2nd SP.gpw
Return Period: 2 Year
Thursday, 02 / 9 / 2017

Hydrograph
Report
18
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3
Thursday, 02 / 9 / 2017
Hyd. No. 1
Area to Ex ES to Pre BMP B
Hydrograph type
= SCS Runoff
Peak discharge
= 42.35 cfs
Storm frequency
= 2 yrs
Time to peak
= 716 min
Time interval
= 2 min
Hyd. volume
= 87,803 cuft
Drainage area
= 10.650 ac
Curve number
= 88.7
Basin Slope
= 0.0%
Hydraulic length
= 0 ft
Tc method
= User
Time of conc. (Tc)
= 5.00 min
Total precip.
= 3.60 in
Distribution
= Type II
Storm duration
= 24 hrs
Shape factor
= 484
Area to Ex ES to Pre BMP B
Q (cfs) Hyd. No. 1 -- 2 Year Q (cfs)
50.00 50.00
40.00 40.00
30.00 30.00
20.00 20.00
10.00 10.00
0.00 0.00
0 120 240 360 480 600 720 840 960 1080 1200 1320
Hyd No. 1 Time (min)

19
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3 Thursday, 02 / 9 / 2017
Hyd. No. 2
Route Exist BMP B
Hydrograph type
= Reservoir Peak discharge
= 4.025 cfs
Storm frequency
= 2 yrs Time to peak
= 744 min
Time interval
= 2 min Hyd. volume
= 77,108 cuft
Inflow hyd. No.
= 1 - Area to Ex ES to Pre BMP Blax. Elevation
= 283.53 ft
Reservoir name
= Ex Asbuilt ES BMP B -Original g8torage
= 48,558 cuft
Storage Indication method used.
Q (cfs)
50.00
40.00
30.00
20.00
10.00
0.00
0 600
Hyd No. 2
Route Exist BMP B
Hyd. No. 2 -- 2 Year
Q (cfs)
50.00
40.00
30.00
20.00
10.00
' 0.00
1200 1800 2400 3000 3600 4200 4800 5400 6000
Time (min)
Hyd No. 1 1777771 Total storage used = 48,558 cuft

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3
Hyd. No. 4
Area to New ES BMP B
Hydrograph type
= SCS Runoff
Peak discharge
Storm frequency
= 2 yrs
Time to peak
Time interval
= 2 min
Hyd. volume
Drainage area
= 10.340 ac
Curve number
Basin Slope
= 0.0%
Hydraulic length
Tc method
= User
Time of conc. (Tc)
Total precip.
= 3.60 in
Distribution
Storm duration
= 24 hrs
Shape factor
Q (cfs)
50.00
40.00
30.00
20.00
10.00
0.00
0 120 240
Hyd No. 4
Area to New ES BMP B
Hyd. No. 4 -- 2 Year
360 480 600 720 840 960
20
Thursday, 02 / 9 / 2017
= 42.24 cfs
= 716 min
= 88,134 cuft
= 89.6
= 0 ft
= 5.00 min
= Type II
= 484
Q (cfs)
50.00
40.00
30.00
20.00
10.00
0.00
1080 1200 1320
Time (min)

Hydrograph
Report
3000 3600 4200
21
Hydraflow Hydrographs Extension for AutoCAD@ Civil 3DO 2014 by Autodesk, Inc. v10.3
Hyd No. 4
Thursday, 02 / 9 / 2017
Hyd. No. 5
Route New ES BMP B
Hydrograph type
= Reservoir
Peak discharge
= 0.585 cfs
Storm frequency
= 2 yrs
Time to peak
= 1084 min
Time interval
= 2 min
Hyd. volume
= 61,504 cuft
Inflow hyd. No.
= 4 - Area to New ES BMP B
Max. Elevation
= 283.18 ft
Reservoir name
= New ES BMP B
Max. Storage
= 70,291 cuft
Storage Indication method used
Q (cfs)
50.00
40.00
30.00
20.00
10.00
0.00 -'
0
Route New ES BMP B
Hyd. No. 5 -- 2 Year
600 1200
1800 2400
3000 3600 4200
4800 5400
Hyd No. 5 —
Hyd No. 4
Total storage used
= 70,291 cuft
Q (cfs)
50.00
40.00
30.00
20.00
10.00
0.00
6000
Time (min)

Hydrograph Report
22
Hydraflow Hydrographs Extension
Hyd. No. 7
Area to MS BMP M1
Hydrograph type
Storm frequency
Time interval
Drainage area
Basin Slope
Tc method
Total precip.
Storm duration
for AutoCAD® Civil 3D® 2014
= SCS Runoff
= 2 yrs
= 2 min
= 6.430 ac
= 0.0%
= User
= 3.60 in
= 24 hrs
by Autodesk, Inc. v10.3
Peak discharge
Time to peak
Hyd. volume
Curve number
Hydraulic length
Time of conc. (Tc)
Distribution
Shape factor
Thursday, 02 / 9 / 2017
= 27.84 cfs
= 716 min
= 59,154 cuft
= 91.7
= 0 ft
= 5.00 min
= Type II
= 484
Q (cfs)
Area to MS BMP M1
Hyd. No. 7 -- 2 Year
Q (cfs)
28.00
28.00
24.00
24.00
20.00
20.00
16.00
16.00
12.00
12.00
8.00
8.00
4.00
0.00
0 120
Hyd No. 7
240 360
4.00
0.00
480 600 720 840 960 1080 1200
Time (min)

Hydrograph
Report
23
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc.
v10.3
Thursday, 02 / 9 / 2017
Hyd. No. 8
Route BMP M1
Hydrograph type
= Reservoir
Peak discharge
= 6.824 cfs
Storm frequency
= 2 yrs
Time to peak
= 724 min
Time interval
= 2 min
Hyd. volume
= 57,093 cuft
Inflow hyd. No.
= 7 - Area to MS BMP M1
Max. Elevation
= 263.87 ft
Reservoir name
= BMP M1
Max. Storage
= 30,465 cuft
Storage Indication method used
Route BMP M1
Q (cfs) Hyd. No. 8 -- 2 Year Q (cfs)
28.00 28.00
24.00 24.00
20.00 20.00
16.00 16.00
12.00 12.00
8.00 8.00
4.00 4.00
0.00 0.00
0 240 480 720 960 1200 1440 1680 1920 2160 2400
Time (min)
Hyd No. 8 Hyd No. 7 177777 Total storage used = 30,465 cuft

24
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3 Thursday, 02 / 9 / 2017
Hyd. No. 10
Area to MS BMP M2
Hydrograph type
= SCS Runoff
Peak discharge
= 32.19 cfs
Storm frequency
= 2 yrs
Time to peak
= 716 min
Time interval
= 2 min
Hyd. volume
= 66,412 cuft
Drainage area
= 8.300 ac
Curve number
= 87.9*
Basin Slope
= 0.0%
Hydraulic length
= 0 ft
Tc method
= User
Time of conc. (Tc)
= 5.00 min
Total precip.
= 3.60 in
Distribution
= Type II
Storm duration
= 24 hrs
Shape factor
= 484
" Composite (Area/CN) = [(4.510 x 80) + (3.800 x 98)] / 8.300
Q (cfs)
35.00
30.00
25.00
15.00
10.00
5.00
Area to MS BMP M2
Hyd. No. 10 -- 2 Year
Q (cfs)
35.00
30.00
25.00
20.00
15.00
10.00
5.00
0.00 0.00
0 120 240 360 480 600 720 840 960 1080 1200 1320
Hyd No. 10 Time (min)

25
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3 Thursday, 02 / 9 / 2017
Hyd. No. 11
Route BMP M2
Hydrograph type
= Reservoir
Peak discharge
= 4.316 cfs
Storm frequency
= 2 yrs
Time to peak
= 730 min
Time interval
= 2 min
Hyd. volume
= 64,567 cuft
Inflow hyd. No.
= 10 - Area to MS BMP M2
Max. Elevation
= 254.17 ft
Reservoir name
= BMP M2
Max. Storage
= 34,111 cuft
Storage Indication method used.
Q (cfs)
35.00
30.00
25.00
15.00
10.00
5.00
0.00 '
0 480 960
Hyd No. 11
Route BMP M2
Hyd. No. 11 -- 2 Year
Q (cfs)
35.00
30.00
25.00
20.00
15.00
10.00
5.00
0.00
1440 1920 2400 2880 3360 3840 4320 4800
Time (min)
Hyd No. 10 ]]]]]]� Total storage used = 34,111 cuft

Hydrograph
Report
26
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3
Thursday, 02 / 9 / 2017
Hyd. No. 13
Area to MS BMP M3
Hydrograph type
= SCS Runoff
Peak discharge
= 47.96 cfs
Storm frequency
= 2 yrs
Time to peak
= 716 min
Time interval
= 2 min
Hyd. volume
= 98,183 cuft
Drainage area
= 12.990 ac
Curve number
= 86.4
Basin Slope
= 0.0%
Hydraulic length
= 0 ft
Tc method
= User
Time of conc. (Tc)
= 5.00 min
Total precip.
= 3.60 in
Distribution
= Type II
Storm duration
= 24 hrs
Shape factor
= 484
Q (cfs)
50.00
40.00
30.00
20.00
10.00
0.00
0 120 240
Hyd No. 13
Area to MS BMP M3
Hyd. No. 13 -- 2 Year
360 480 600 720 840 960
Q (cfs)
50.00
40.00
30.00
20.00
10.00
0.00
1080 1200 1320
Time (min)

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3
Hyd. No. 14
Route BMP M3
Hydrograph type
= Reservoir
Peak discharge
Storm frequency
= 2 yrs
Time to peak
Time interval
= 2 min
Hyd. volume
Inflow hyd. No.
= 13 - Area to MS BMP M3
Max. Elevation
Reservoir name
= BMP M3
Max. Storage
Storage Indication method used.
Q (cfs)
50.00
40.00
30.00
20.00
10.00
Route BMP M3
Hyd. No. 14 -- 2 Year
27
Thursday, 02 / 9 / 2017
= 11.67 cfs
= 724 min
= 96,171 cuft
= 267.24 ft
= 45,803 cuft
Q (cfs)
50.00
40.00
30.00
20.00
10.00
0.00 0.00
0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 1680
Time (min)
Hyd No. 14 Hyd No. 13 Total storage used = 45,803 cuft

28
Hydrograph Summary Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3
Hyd.
No.
Hydrograph
type
(origin)
Peak
flow
(cfs)
Time
interval
(min)
Time to
Peak
(min)
Hyd.
volume
(cuft)
Inflow
hyd(s)
Maximum
elevation
(ft)
Total
strge used
(cuft)
Hydrograph
Description
1
SCS Runoff
58.50
2
716
123,500
------
------
------
Area to Ex ES to Pre BMP B
2
Reservoir
10.39
2
726
112,708
1
284.02
65,404
Route Exist BMP B
4
SCS Runoff
57.90
2
716
123,112
------
------
------
Area to New ES BMP B
5
Reservoir
2.294
2
798
96,140
4
283.56
80,626
Route New ES BMP B
7
SCS Runoff
37.51
2
716
81,320
------
------
------
Area to MS BMP M1
8
Reservoir
13.03
2
724
79,221
7
264.35
39,450
Route BMP M1
10
SCS Runoff
44.78
2
716
93,991
------
------
------
Area to MS BMP M2
11
Reservoir
8.783
2
726
92,103
10
254.89
47,495
Route BMP M2
13
SCS Runoff
67.62
2
716
140,595
------
------
------
Area to MS BMP M3
14
Reservoir
22.45
2
724
138,554
13
267.94
62,932
Route BMP M3
15 -188 -PRE -POST -2nd SP.gpw
Return Period: 5 Year
Thursday, 02 / 9 / 2017

i 11 0 01 fuel
Ml 11 �=I1][1111
Ki1�lIlr.������ ■ �����jCi1�lI1]
01111I=� Mi ��W0111111
`[1][111=�=[I][1111
0.00 ' . 0.00
0 120 240 360 480 600 720 840 960 1080 1200
Hyd No. 1 Time (min)
29
Hydrograph
Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3
Thursday, 02 / 9 / 2017
Hyd. No. 1
Area to Ex ES to Pre BMP B
Hydrograph type
= SCS Runoff
Peak discharge
= 58.50 cfs
Storm frequency
= 5 yrs
Time to peak
= 716 min
Time interval
= 2 min
Hyd. volume
= 123,500 cuft
Drainage area
= 10.650 ac
Curve number
= 88.7
Basin Slope
= 0.0%
Hydraulic length
= 0 ft
Tc method
= User
Time of conc. (Tc)
= 5.00 min
Total precip.
= 4.65 in
Distribution
= Type II
Storm duration
= 24 hrs
Shape factor
= 484
Area
to Ex ES to Pre BMP B
Q (cfs)
Hyd. No. 1 -- 5 Year
Q (cfs)
60.00
60.00
i 11 0 01 fuel
Ml 11 �=I1][1111
Ki1�lIlr.������ ■ �����jCi1�lI1]
01111I=� Mi ��W0111111
`[1][111=�=[I][1111
0.00 ' . 0.00
0 120 240 360 480 600 720 840 960 1080 1200
Hyd No. 1 Time (min)

Hydrograph
Report
30
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3
Thursday, 02 / 9 / 2017
Hyd. No. 2
Route Exist BMP B
Hydrograph type
= Reservoir Peak discharge
= 10.39 cfs
Storm frequency
= 5 yrs Time to peak
= 726 min
Time interval
= 2 min Hyd. volume
= 112,708 cuft
Inflow hyd. No.
= 1 - Area to Ex ES to Pre BMP Blax. Elevation
= 284.02 ft
Reservoir name
= Ex Asbuilt ES BMP B -Original g8torage
= 65,404 cuft
Storage Indication method used
Q (cfs)
60.00
50.00
30.00
20.00
10.00
Route Exist BMP B
Hyd. No. 2 -- 5 Year
0.00 '
0 240 480 720 960 1200 1440 1680
Hyd No. 2 Hyd No. 1 177777 Total storage used = 65,404 cuft
Q (cfs)
60.00
50.00
40.00
30.00
20.00
10.00
0.00
1920
Time (min)

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10."
Hyd. No. 4
Time to peak
Area to New ES BMP B
Hyd. volume
Hydrograph type
= SCS Runoff
Storm frequency
= 5 yrs
Time interval
= 2 min
Drainage area
= 10.340 ac
Basin Slope
= 0.0%
Tc method
= User
Total precip.
= 4.65 in
Storm duration
= 24 hrs
31
Thursday, 02 / 9 / 2017
Peak discharge
= 57.90 cfs
Time to peak
= 716 min
Hyd. volume
= 123,112 cuft
Curve number
= 89.6
Hydraulic length
= 0 ft
Time of conc. (Tc)
= 5.00 min
Distribution
= Type II
Shape factor
= 484
Area to New ES BMP B
Q (cfs) Hyd. No. 4 -- 5 Year Q (cfs)
60.00 60.00
50.00 50.00
40.00 40.00
30.00 30.00
20.00 20.00
10.00 10.00
0.00 0.00
0 120 240 360 480 600 720 840 960 1080 1200
Hyd No. 4 Time (min)

32
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3 Thursday, 02 / 9 / 2017
Hyd. No. 5
Route New ES BMP B
Hydrograph type
= Reservoir
Peak discharge
= 2.294 cfs
Storm frequency
= 5 yrs
Time to peak
= 798 min
Time interval
= 2 min
Hyd. volume
= 96,140 cuft
Inflow hyd. No.
= 4 - Area to New ES BMP B
Max. Elevation
= 283.56 ft
Reservoir name
= New ES BMP B
Max. Storage
= 80,626 cuft
Storage Indication method used.
Q (cfs)
60.00
50.00
F,�
30.00
20.00
10.00
0.00
0 600
Hyd No. 5
Route New ES BMP B
Hyd. No. 5 -- 5 Year
Q (cfs)
60.00
50.00
40.00
30.00
20.00
10.00
0.00
1200 1800 2400 3000 3600 4200 4800 5400 6000
Time (min)
Hyd No. 4 177777 Total storage used = 80,626 cuft

Hydrograph
Report
33
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3
Thursday, 02 / 9 / 2017
Hyd. No. 7
Area to MS BMP M1
Hydrograph type
= SCS Runoff
Peak discharge
= 37.51 cfs
Storm frequency
= 5 yrs
Time to peak
= 716 min
Time interval
= 2 min
Hyd. volume
= 81,320 cuft
Drainage area
= 6.430 ac
Curve number
= 91.7
Basin Slope
= 0.0%
Hydraulic length
= 0 ft
Tc method
= User
Time of conc. (Tc)
= 5.00 min
Total precip.
= 4.65 in
Distribution
= Type II
Storm duration
= 24 hrs
Shape factor
= 484
Area to MS BMP M1
Q (cfs) Hyd. No. 7 -- 5 Year Q (cfs)
40.00 40.00
30.00 30.00
20.00 20.00
10.00 10.00
0.00 0.00
0 120 240 360 480 600 720 840 960 1080 1200
Hyd No. 7 Time (min)

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD@ Civil 3DO 2014 by Autodesk, Inc. v10.3
Hyd. No. 8
Route BMP M1
Hydrograph type
= Reservoir
Peak discharge
Storm frequency
= 5 yrs
Time to peak
Time interval
= 2 min
Hyd. volume
Inflow hyd. No.
= 7 - Area to MS BMP M1
Max. Elevation
Reservoir name
= BMP M1
Max. Storage
Storage Indication method used.
Route BMP M1
34
Thursday, 02 / 9 / 2017
= 13.03 cfs
= 724 min
= 79,221 cuft
= 264.35 ft
= 39,450 cuft
Q (cfs) Hyd. No. 8 -- 5 Year Q (cfs)
40.00 40.00
30.00 30.00
20.00 20.00
10.00 10.00
0.00 0.00
0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560
Time (min)
Hyd No. 8 Hyd No. 7 Total storage used = 39,450 cuft

35
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3 Thursday, 02 / 9 / 2017
Hyd. No. 10
Area to MS BMP M2
Hydrograph type
= SCS Runoff
Peak discharge
= 44.78 cfs
Storm frequency
= 5 yrs
Time to peak
= 716 min
Time interval
= 2 min
Hyd. volume
= 93,991 cuft
Drainage area
= 8.300 ac
Curve number
= 87.9*
Basin Slope
= 0.0%
Hydraulic length
= 0 ft
Tc method
= User
Time of conc. (Tc)
= 5.00 min
Total precip.
= 4.65 in
Distribution
= Type II
Storm duration
= 24 hrs
Shape factor
= 484
" Composite (Area/CN) = [(4.510 x 80) + (3.800 x 98)] / 8.300
Q (cfs)
50.00
40.00
30.00
20.00
10.00
0.00
0 120 240
Hyd No. 10
Area to MS BMP M2
Hyd. No. 10 -- 5 Year
360 480 600 720 840
Q (cfs)
50.00
40.00
30.00
20.00
10.00
0.00
960 1080 1200 1320
Time (min)

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD@ Civil 3DO 2014 by Autodesk, Inc. v10.3
Hyd. No. 11
Route BMP M2
Hydrograph type
= Reservoir
Peak discharge
Storm frequency
= 5 yrs
Time to peak
Time interval
= 2 min
Hyd. volume
Inflow hyd. No.
= 10 - Area to MS BMP M2
Max. Elevation
Reservoir name
= BMP M2
Max. Storage
Storage Indication method used.
Q (cfs)
50.00
40.00
30.00
20.00
10.00
0.00 -'
0
240
Hyd No. 11
Route BMP M2
Hyd. No. 11 -- 5 Year
480 720
Hyd No. 10
36
Thursday, 02 / 9 / 2017
= 8.783 cfs
= 726 min
= 92,103 cuft
= 254.89 ft
= 47,495 cuft
960 1200 1440 1680
Total storage used = 47,495 cuft
Q (cfs)
50.00
40.00
30.00
20.00
10.00
0.00
1920
Time (min)

37
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3 Thursday, 02 / 9 / 2017
Hyd. No. 13
Area to MS BMP M3
Hydrograph type
= SCS Runoff
Peak discharge
= 67.62 cfs
Storm frequency
= 5 yrs
Time to peak
= 716 min
Time interval
= 2 min
Hyd. volume
= 140,595 cuft
Drainage area
= 12.990 ac
Curve number
= 86.4
Basin Slope
= 0.0%
Hydraulic length
= 0 ft
Tc method
= User
Time of conc. (Tc)
= 5.00 min
Total precip.
= 4.65 in
Distribution
= Type II
Storm duration
= 24 hrs
Shape factor
= 484
Q (cfs)
70.00
50.00
FA�
30.00
20.00
10.00
Area to MS BMP M3
Hyd. No. 13 -- 5 Year
Q (cfs)
70.00
50.00
40.00
30.00
20.00
10.00
0.00 0.00
0 120 240 360 480 600 720 840 960 1080 1200 1320
Hyd No. 13 Time (min)

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3
Hyd. No. 14
Route BMP M3
Hydrograph type
= Reservoir
Peak discharge
Storm frequency
= 5 yrs
Time to peak
Time interval
= 2 min
Hyd. volume
Inflow hyd. No.
= 13 - Area to MS BMP M3
Max. Elevation
Reservoir name
= BMP M3
Max. Storage
Storage Indication method used.
Route BMP M3
38
Thursday, 02 / 9 / 2017
= 22.45 cfs
= 724 min
= 138,554 cuft
= 267.94 ft
= 62,932 cuft
Q (cfs) Hyd. No. 14 -- 5 Year Q (cfs)
70.00 70.00
60.00 60.00
50.00 50.00
40.00 40.00
30.00 30.00
20.00 20.00
10.00 10.00
0.00 0.00
0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560
Time (min)
Hyd No. 14 Hyd No. 13 177777 Total storage used = 62,932 cuft

Hydrograph Summary Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3
Hyd.
No.
Hydrograph
type
(origin)
Peak
flow
(cfs)
Time
interval
(min)
Time to
Peak
(min)
Hyd.
volume
(cuft)
Inflow
hyd(s)
Maximum
elevation
(ft)
Total
strge used
(cuft)
Hydrograph
Description
1
SCS Runoff
69.69
2
716
148,774
------
------
------
Area to Ex ES to Pre BMP B
2
Reservoir
15.43
2
724
137,928
1
284.33
77,342
Route Exist BMP B
4
SCS Runoff
68.74
2
716
147,816
------
------
------
Area to New ES BMP B
5
Reservoir
4.586
2
752
120,693
4
283.91
90,380
Route New ES BMP B
7
SCS Runoff
44.19
2
716
96,895
------
------
------
Area to MS BMP M1
8
Reservoir
17.47
2
722
94,781
7
264.64
45,101
Route BMP M1
10
SCS Runoff
53.51
2
716
113,563
------
------
------
Area to MS BMP M2
11
Reservoir
12.12
2
724
111,651
10
255.35
56,565
Route BMP M2
13
SCS Runoff
81.31
2
716
170,828
------
------
------
Area to MS BMP M3
14
Reservoir
29.93
2
724
168,770
13
268.36
73,845
Route BMP M3
15 -188 -PRE -POST -2nd SP.gpw
Return Period: 10 Year
Thursday, 02 / 9 / 2017

• 1 IIIS'������, ���� • 1 IZI]
61111111M �M11111I11
011111Z��: ��'=1111Z1]
41111Ir.�=MI�W'0111I]
HIMAI �M1 11
0.00 ' 1 1 1 1 1 1. 0.00
0 120 240 360 480 600 720 840 960 1080 1200
Hyd No. 1 Time (min)
40
Hydrograph
Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014
by Autodesk, Inc. v10.3
Thursday, 02 / 9 / 2017
Hyd. No. 1
Area to Ex ES to Pre BMP B
Hydrograph type
= SCS Runoff
Peak discharge
= 69.69 cfs
Storm frequency
= 10 yrs
Time to peak
= 716 min
Time interval
= 2 min
Hyd. volume
= 148,774 cuft
Drainage area
= 10.650 ac
Curve number
= 88.7
Basin Slope
= 0.0%
Hydraulic length
= 0 ft
Tc method
= User
Time of conc. (Tc)
= 5.00 min
Total precip.
= 5.38 in
Distribution
= Type II
Storm duration
= 24 hrs
Shape factor
= 484
Area
to Ex ES to Pre BMP B
Q (cfs)
Hyd. No. 1 -- 10 Year
Q (cfs)
70.00
70.00
• 1 IIIS'������, ���� • 1 IZI]
61111111M �M11111I11
011111Z��: ��'=1111Z1]
41111Ir.�=MI�W'0111I]
HIMAI �M1 11
0.00 ' 1 1 1 1 1 1. 0.00
0 120 240 360 480 600 720 840 960 1080 1200
Hyd No. 1 Time (min)

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3
Hyd. No. 2
Route Exist BMP B
Hydrograph type
= Reservoir Peak discharge
Storm frequency
= 10 yrs Time to peak
Time interval
= 2 min Hyd. volume
Inflow hyd. No.
= 1 - Area to Ex ES to Pre BMP Blax. Elevation
Reservoir name
= Ex Asbuilt ES BMP B -Original g8torage
Storage Indication method used.
Route Exist BMP B
41
Thursday, 02 / 9 / 2017
= 15.43 cfs
= 724 min
= 137,928 cuft
= 284.33 ft
= 77,342 cuft
Q (cfs) Hyd. No. 2 -- 10 Year Q (cfs)
70.00 70.00
60.00 60.00
50.00 50.00
40.00 40.00
30.00 30.00
20.00 20.00
10.00 10.00
0.00 0.00
0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 1680
Time (min)
Hyd No. 2 Hyd No. 1 177777 Total storage used = 77,342 cuft

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10."
Hyd. No. 4
Time to peak
Area to New ES BMP B
Hyd. volume
Hydrograph type
= SCS Runoff
Storm frequency
= 10 yrs
Time interval
= 2 min
Drainage area
= 10.340 ac
Basin Slope
= 0.0%
Tc method
= User
Total precip.
= 5.38 in
Storm duration
= 24 hrs
42
Thursday, 02 / 9 / 2017
Peak discharge
= 68.74 cfs
Time to peak
= 716 min
Hyd. volume
= 147,816 cuft
Curve number
= 89.6
Hydraulic length
= 0 ft
Time of conc. (Tc)
= 5.00 min
Distribution
= Type II
Shape factor
= 484
Area to New ES BMP B
Q (cfs) Hyd. No. 4 -- 10 Year Q (cfs)
70.00 70.00
60.00 60.00
50.00 50.00
40.00 40.00
30.00 30.00
20.00 20.00
10.00 10.00
0.00 0.00
0 120 240 360 480 600 720 840 960 1080 1200
Hyd No. 4 Time (min)

43
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3 Thursday, 02 / 9 / 2017
Hyd. No. 5
Route New ES BMP B
Hydrograph type
= Reservoir
Peak discharge
= 4.586 cfs
Storm frequency
= 10 yrs
Time to peak
= 752 min
Time interval
= 2 min
Hyd. volume
= 120,693 cuft
Inflow hyd. No.
= 4 - Area to New ES BMP B
Max. Elevation
= 283.91 ft
Reservoir name
= New ES BMP B
Max. Storage
= 90,380 cuft
Storage Indication method used.
Q (cfs)
70.00
50.00
FA�
30.00
20.00
10.00
0.00
0 600
Hyd No. 5
Route New ES BMP B
Hyd. No. 5 -- 10 Year
Q (cfs)
70.00
50.00
40.00
30.00
20.00
10.00
0.00
1200 1800 2400 3000 3600 4200 4800 5400 6000
Time (min)
Hyd No. 4 177777 Total storage used = 90,380 cuft

alitsio=��mmfiZilll
1 11 � ■� 1 1 /]
0.00 ' 0.00
0 120 240 360 480 600 720 840 960 1080 1200
Hyd No. 7 Time (min)
44
Hydrograph
Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014
by Autodesk, Inc. v10.3
Thursday, 02 / 9 / 2017
Hyd. No. 7
Area to MS BMP M1
Hydrograph type
= SCS Runoff
Peak discharge
= 44.19 cfs
Storm frequency
= 10 yrs
Time to peak
= 716 min
Time interval
= 2 min
Hyd. volume
= 96,895 cuft
Drainage area
= 6.430 ac
Curve number
= 91.7
Basin Slope
= 0.0%
Hydraulic length
= 0 ft
Tc method
= User
Time of conc. (Tc)
= 5.00 min
Total precip.
= 5.38 in
Distribution
= Type II
Storm duration
= 24 hrs
Shape factor
= 484
Area to MS BMP M1
Q (cfs)
Hyd. No. 7 -- 10 Year
Q (cfs)
50.00
50.00
alitsio=��mmfiZilll
1 11 � ■� 1 1 /]
0.00 ' 0.00
0 120 240 360 480 600 720 840 960 1080 1200
Hyd No. 7 Time (min)

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD@ Civil 3DO 2014 by Autodesk, Inc. v10.3
Hyd. No. 8
Route BMP M1
Hydrograph type
= Reservoir
Peak discharge
Storm frequency
= 10 yrs
Time to peak
Time interval
= 2 min
Hyd. volume
Inflow hyd. No.
= 7 - Area to MS BMP M1
Max. Elevation
Reservoir name
= BMP M1
Max. Storage
Storage Indication method used.
Route BMP M1
45
Thursday, 02 / 9 / 2017
= 17.47 cfs
= 722 min
= 94,781 cuft
= 264.64 ft
= 45,101 cuft
Q (cfs) Hyd. No. 8 -- 10 Year Q (cfs)
50.00 50.00
40.00 40.00
30.00 30.00
20.00 20.00
10.00 10.00
0.00 - 0.00
0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560
Time (min)
Hyd No. 8 Hyd No. 7 Total storage used = 45,101 cuft

" Composite (Area/CN) = [(4.510 x 80) + (3.800 x 98)] / 8.300
Area to MS BMP M2
Q (cfs) Hyd. No. 10 -- 10 Year Q (cfs)
60.00
46
Hydrograph
Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3
Thursday, 02 / 9 / 2017
Hyd. No. 10
Area to MS BMP M2
Hydrograph type
= SCS Runoff
Peak discharge
= 53.51 cfs
Storm frequency
= 10 yrs
Time to peak
= 716 min
Time interval
= 2 min
Hyd. volume
= 113,563 cuft
Drainage area
= 8.300 ac
Curve number
= 87.9*
Basin Slope
= 0.0%
Hydraulic length
= 0 ft
Tc method
= User
Time of conc. (Tc)
= 5.00 min
Total precip.
= 5.38 in
Distribution
= Type II
Storm duration
= 24 hrs
Shape factor
= 484
" Composite (Area/CN) = [(4.510 x 80) + (3.800 x 98)] / 8.300
Area to MS BMP M2
Q (cfs) Hyd. No. 10 -- 10 Year Q (cfs)
60.00
60.00
50.00
50.00
40.00
40.00
30.00
30.00
20.00
10.00
20.00
10.00
0.00 ' 1 1 1 1 1 1 0.00
0 120 240 360 480 600 720 840 960 1080 1200
Hyd No. 10 Time (min)

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3
Hyd. No. 11
Route BMP M2
Hydrograph type
= Reservoir
Peak discharge
Storm frequency
= 10 yrs
Time to peak
Time interval
= 2 min
Hyd. volume
Inflow hyd. No.
= 10 - Area to MS BMP M2
Max. Elevation
Reservoir name
= BMP M2
Max. Storage
Storage Indication method used.
Route BMP M2
47
Thursday, 02 / 9 / 2017
= 12.12 cfs
= 724 min
= 111,651 cuft
= 255.35 ft
= 56,565 cuft
Q (cfs) Hyd. No. 11 -- 10 Year Q (cfs)
60.00 60.00
50.00 50.00
40.00 40.00
30.00 30.00
20.00 20.00
10.00 10.00
0.00 0.00
0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 1680 1800
Time (min)
Hyd No. 11 Hyd No. 10 ]]]]]7�1 Total storage used = 56,565 cuft

48
Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3 Thursday, 02 / 9 / 2017
Hyd. No. 13
Area to MS BMP M3
Hydrograph type
= SCS Runoff
Peak discharge
= 81.31 cfs
Storm frequency
= 10 yrs
Time to peak
= 716 min
Time interval
= 2 min
Hyd. volume
= 170,828 cuft
Drainage area
= 12.990 ac
Curve number
= 86.4
Basin Slope
= 0.0%
Hydraulic length
= 0 ft
Tc method
= User
Time of conc. (Tc)
= 5.00 min
Total precip.
= 5.38 in
Distribution
= Type II
Storm duration
= 24 hrs
Shape factor
= 484
Q (cfs)
90.00
70.00
50.00
40.00
30.00
20.00
10.00
Area to MS BMP M3
Hyd. No. 13 -- 10 Year
Q (cfs)
90.00
70.00
50.00
40.00
30.00
20.00
10.00
0.00 10.00
0 120 240 360 480 600 720 840 960 1080 1200 1320
Hyd No. 13 Time (min)

Hydrograph
Report
49
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3
Thursday, 02 / 9 / 2017
Hyd. No. 14
Route BMP M3
Hydrograph type
= Reservoir
Peak discharge
= 29.93 cfs
Storm frequency
= 10 yrs
Time to peak
= 724 min
Time interval
= 2 min
Hyd. volume
= 168,770 cuft
Inflow hyd. No.
= 13 - Area to MS BMP M3
Max. Elevation
= 268.36 ft
Reservoir name
= BMP M3
Max. Storage
= 73,845 cuft
Storage Indication method used
Q (cfs)
90.00
80.00
70.00
60.00
50.00
40.00
Route BMP M3
Hyd. No. 14 -- 10 Year
------------------------
Q (cfs)
90.00
80.00
70.00
60.00
50.00
40.00
of

50
Hydrograph Summary Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3
Hyd.
No.
Hydrograph
type
(origin)
Peak
flow
(cfs)
Time
interval
(min)
Time to
Peak
(min)
Hyd.
volume
(cuft)
Inflow
hyd(s)
Maximum
elevation
(ft)
Total
strge used
(cuft)
Hydrograph
Description
1
SCS Runoff
109.47
2
716
241,061
------
------
------
Area to Ex ES to Pre BMP B
2
Reservoir
34.96
2
724
230,077
1
285.31
116,026
Route Exist BMP B
4
SCS Runoff
107.23
2
716
237,804
------
------
------
Area to New ES BMP B
5
Reservoir
61.77
2
722
210,326
4
284.81
116,481
Route New ES BMP B
7
SCS Runoff
67.91
2
716
153,344
------
------
------
Area to MS BMP M1
8
Reservoir
40.78
2
722
151,195
7
265.34
58,981
Route BMP M1
10
SCS Runoff
84.60
2
716
185,190
------
------
------
Area to MS BMP M2
11
Reservoir
54.87
2
720
183,221
10
256.22
74,058
Route BMP M2
13
SCS Runoff
130.18
2
716
281,981
------
------
------
Area to MS BMP M3
14
Reservoir
58.05
2
722
279,887
13
269.45
105,652
Route BMP M3
15 -188 -PRE -POST -2nd SP.gpw
Return Period: 100 Year
Thursday, 02 / 9 / 2017

51
Hydrograph
Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014
by Autodesk, Inc. v10.3
Thursday, 02 / 9 / 2017
Hyd. No. 1
Area to Ex ES to Pre BMP B
Hydrograph type
= SCS Runoff
Peak discharge
= 109.47 cfs
Storm frequency
= 100 yrs
Time to peak
= 716 min
Time interval
= 2 min
Hyd. volume
= 241,061 cuft
Drainage area
= 10.650 ac
Curve number
= 88.7
Basin Slope
= 0.0%
Hydraulic length
= 0 ft
Tc method
= User
Time of conc. (Tc)
= 5.00 min
Total precip.
= 8.00 in
Distribution
= Type II
Storm duration
= 24 hrs
Shape factor
= 484
Area to Ex ES to Pre BMP B
Q (cfs)
Hyd. No. 1 -- 100 Year
Q (cfs)
120.00
120.00
100.00
100.00
80.00
80.00
60.00
60.00
40.00
40.00
20.00
20.00
0.00
0.00
0 120
240 360
480 600 720 840 960
1080 1200
Hyd No.
1
Time (min)

Hydrograph
Report
52
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3
Thursday, 02 / 9 / 2017
Hyd. No. 2
Route Exist BMP B
Hydrograph type
= Reservoir Peak discharge
= 34.96 cfs
Storm frequency
= 100 yrs Time to peak
= 724 min
Time interval
= 2 min Hyd. volume
= 230,077 cuft
Inflow hyd. No.
= 1 - Area to Ex ES to Pre BMP Blax. Elevation
= 285.31 ft
Reservoir name
= Ex Asbuilt ES BMP B -Original IDg8torage
= 116,026 cuft
Storage Indication method used
Q (cfs)
120.00
100.00
:1 11
•1 11
i 1 11
20.00
Q (cfs)
120.00
100.00
:1 11
.1 11
40.00
20.00
MWET211
360 480 600 720 840 960 1080 1200 1320 1440 1560
Time (min)
Hyd No. 1 ]]]]]]� Total storage used = 116,026 cuft

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10."
Hyd. No. 4
Time to peak
Area to New ES BMP B
Hyd. volume
Hydrograph type
= SCS Runoff
Storm frequency
= 100 yrs
Time interval
= 2 min
Drainage area
= 10.340 ac
Basin Slope
= 0.0%
Tc method
= User
Total precip.
= 8.00 in
Storm duration
= 24 hrs
53
Thursday, 02 / 9 / 2017
Peak discharge
= 107.23 cfs
Time to peak
= 716 min
Hyd. volume
= 237,804 cuft
Curve number
= 89.6
Hydraulic length
= 0 ft
Time of conc. (Tc)
= 5.00 min
Distribution
= Type II
Shape factor
= 484
Area to New ES BMP B
Q (cfs) Hyd. No. 4 -- 100 Year Q (cfs)
120.00 120.00
100.00 100.00
80.00 80.00
60.00 60.00
40.00 40.00
20.00 20.00
0.00 0.00
0 120 240 360 480 600 720 840 960 1080 1200
Hyd No. 4 Time (min)

Hydrograph
Report
54
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3
Thursday, 02 / 9 / 2017
Hyd. No. 5
Route New ES BMP B
Hydrograph type
= Reservoir
Peak discharge
= 61.77 cfs
Storm frequency
= 100 yrs
Time to peak
= 722 min
Time interval
= 2 min
Hyd. volume
= 210,326 cuft
Inflow hyd. No.
= 4 - Area to New ES BMP B
Max. Elevation
= 284.81 ft
Reservoir name
= New ES BMP B
Max. Storage
= 116,481 cuft
Storage Indication method used
Q (cfs)
120.00
100.00
:1 11
•1 11
i 1 11
20.00
Q (cfs)
120.00
100.00
:1 11
.1 11
40.00
20.00
WETS 21
360 480 600 720 840 960 1080 1200 1320 1440 1560
Time (min)
Hyd No. 4 ]]]]]]� Total storage used = 116,481 cuft

• 1 III)ri������ ���� • 1 IZI]
011111M ��=1111112
%ZIIIIIr.� M �W01111I11
HM010M � M, �=1 11
0.00 ' 0.00
0 120 240 360 480 600 720 840 960 1080 1200
Hyd No. 7 Time (min)
55
Hydrograph
Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014
by Autodesk, Inc. v10.3
Thursday, 02 / 9 / 2017
Hyd. No. 7
Area to MS BMP M1
Hydrograph type
= SCS Runoff
Peak discharge
= 67.91 cfs
Storm frequency
= 100 yrs
Time to peak
= 716 min
Time interval
= 2 min
Hyd. volume
= 153,344 cuft
Drainage area
= 6.430 ac
Curve number
= 91.7
Basin Slope
= 0.0%
Hydraulic length
= 0 ft
Tc method
= User
Time of conc. (Tc)
= 5.00 min
Total precip.
= 8.00 in
Distribution
= Type II
Storm duration
= 24 hrs
Shape factor
= 484
Area to MS BMP M1
Q (cfs)
Hyd. No. 7 -- 100 Year
Q (cfs)
70.00
70.00
• 1 III)ri������ ���� • 1 IZI]
011111M ��=1111112
%ZIIIIIr.� M �W01111I11
HM010M � M, �=1 11
0.00 ' 0.00
0 120 240 360 480 600 720 840 960 1080 1200
Hyd No. 7 Time (min)

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3
Hyd. No. 8
Route BMP M1
Hydrograph type
= Reservoir
Peak discharge
Storm frequency
= 100 yrs
Time to peak
Time interval
= 2 min
Hyd. volume
Inflow hyd. No.
= 7 - Area to MS BMP M1
Max. Elevation
Reservoir name
= BMP M1
Max. Storage
Storage Indication method used.
Route BMP M1
56
Thursday, 02 / 9 / 2017
= 40.78 cfs
= 722 min
= 151,195 cuft
= 265.34 ft
= 58,981 cuft
Q (cfs) Hyd. No. 8 -- 100 Year Q (cfs)
70.00 70.00
60.00 60.00
50.00 50.00
40.00 40.00
30.00 30.00
20.00 20.00
10.00 10.00
0.00 0.00
0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560
Time (min)
Hyd No. 8 Hyd No. 7 177777 Total storage used = 58,981 cuft

" Composite (Area/CN) = [(4.510 x 80) + (3.800 x 98)] / 8.300
Area to MS BMP M2
Q (cfs) Hyd. No. 10 -- 100 Year Q (cfs)
90.00
57
Hydrograph
Report
80.00
70.00
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3
Thursday, 02 / 9 / 2017
Hyd. No. 10
60.00
Area to MS BMP M2
Hydrograph type
= SCS Runoff
Peak discharge
= 84.60 cfs
Storm frequency
= 100 yrs
Time to peak
= 716 min
Time interval
= 2 min
Hyd. volume
= 185,190 cuft
Drainage area
= 8.300 ac
Curve number
= 87.9*
Basin Slope
= 0.0%
Hydraulic length
= 0 ft
Tc method
= User
Time of conc. (Tc)
= 5.00 min
Total precip.
= 8.00 in
Distribution
= Type II
Storm duration
= 24 hrs
Shape factor
= 484
" Composite (Area/CN) = [(4.510 x 80) + (3.800 x 98)] / 8.300
Area to MS BMP M2
Q (cfs) Hyd. No. 10 -- 100 Year Q (cfs)
90.00
90.00
80.00
80.00
70.00
70.00
60.00
60.00
50.00
50.00
40.00
40.00
30.00
30.00
20.00
10.00
20.00
10.00
0.00 ' 0.00
0 120 240 360 480 600 720 840 960 1080 1200
Hyd No. 10 Time (min)

Hydrograph
Report
58
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3
Thursday, 02 / 9 / 2017
Hyd. No. 11
Route BMP M2
Hydrograph type
= Reservoir
Peak discharge
= 54.87 cfs
Storm frequency
= 100 yrs
Time to peak
= 720 min
Time interval
= 2 min
Hyd. volume
= 183,221 cuft
Inflow hyd. No.
= 10 - Area to MS BMP M2
Max. Elevation
= 256.22 ft
Reservoir name
= BMP M2
Max. Storage
= 74,058 cuft
Storage Indication method used
Q (cfs)
90.00
80.00
70.00
60.00
50.00
40.00
Route BMP M2
Hyd. No. 11 -- 100 Year
------------------------
1 1 �1 .1 �:1 .11 1 :�1 •.1 1:1 11 1 ��1 .1
Q (cfs)
90.00
80.00
70.00
60.00
50.00
40.00

Hydrograph
Report
59
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014
Hyd. No. 13
Area to MS BMP M3
Hydrograph type = SCS Runoff
Storm frequency = 100 yrs
Time interval = 2 min
Drainage area = 12.990 ac
Basin Slope = 0.0%
Tc method = User
Total precip. = 8.00 in
Storm duration = 24 hrs
by Autodesk, Inc. v10.3
Peak discharge
Time to peak
Hyd. volume
Curve number
Hydraulic length
Time of conc. (Tc)
Distribution
Shape factor
Thursday, 02 / 9 / 2017
= 130.18 cfs
= 716 min
= 281,981 cuft
= 86.4
= 0 ft
= 5.00 min
= Type II
= 484
Q (cfs)
Area to MS BMP M3
Hyd. No. 13 -- 100 Year
Q (cfs)
140.00
140.00
120.00
120.00
100.00
100.00
80.00
80.00
60.00
60.00
40.00
40.00
20.00
0.00
0 120
Hyd No.
240 360
13
480 600 720 840 960
20.00
0.00
1080 1200
Time (min)

Hydrograph Report
Hydraflow Hydrographs Extension for AutoCAD® Civil 3D® 2014 by Autodesk, Inc. v10.3
Hyd. No. 14
Route BMP M3
Hydrograph type
= Reservoir
Peak discharge
Storm frequency
= 100 yrs
Time to peak
Time interval
= 2 min
Hyd. volume
Inflow hyd. No.
= 13 - Area to MS BMP M3
Max. Elevation
Reservoir name
= BMP M3
Max. Storage
Storage Indication method used.
Q (cfs)
140.00
120.00
100.00
:� 11
•1 11
40.00
20.00
60
Thursday, 02 / 9 / 2017
= 58.05 cfs
= 722 min
= 279,887 cuft
= 269.45 ft
= 105,652 cuft
Q (cfs)
140.00
120.00
100.00
:1 11
•1 11
40.00
20.00
rna
360 480 600 720 840 960 1080 1200 1320 1440 1560
Time (min)
Hyd No. 13 ]]]]]]� Total storage used = 105,652 cuft

Total Nutrient
Reduction
Calculations

J�rc�an/}alis tae Storr►1�>>ater _Nutrient �oac�ccountin� tool 1�er �.o.
Proceed to Watershed Characteristics I I Skip to BMP Characteristics 1 I Skip to Summary
General Model Instructions
— Details of the development should be entered in the first two tabs (Watershed Characteristics
and BMP Characteristics); results may be viewed on the third tab (Development Summary).
— The cells shaded grey are those that allow/require user input.
— Selecting the physiographic/geologic region and precipitation location most appropriate for
the development of interest is essential in producing accurate results. Maps have been
provided (see right) to assist in this selection, but soil maps should be consulted, or soil tests
performed, to verify the presence of Triassic or sandhill/coastal plain soils. A list of counties
located within, or partially within, each region has also been provided for convenience.
— Each tab has detailed instructions and guidelines for entering the necessary information (this
information is also included below).
— To remove an entry in a cell with a dropdown list, select the blank row from the dropdown
menu or select the cell and press the 'delete' button.
IL Specific Tab Guidelines
Watershed Characteristics
— For non-residential watersheds, indicate areas of each land use type in Column 1 for both
pre- and post -development conditions.
— For residential watersheds, complete the required information in Column 2 for both pre -
and post -development conditions.
— If a given land use is not present in the given watershed, leave the cell blank or enter a
zero.
— Ensure that land use areas entered for both pre- and post -development conditions match
the total development area entered in cell 021.
— Residential areas may be entered by average lot size (column, part A), or may be
separated into individual land uses (column 2, part B) -- do NOT list out individual land
uses within an area already described by lot size.
— Unless runoff flowing onto the development from offsite is routed separately around or
through the site, the offsite catchment area draining in must be included in the acreage
values of the appropriate land use(s) and treated.
BMP Characteristics
— This spreadsheet allows the development to be divided into as many as 6 smaller
catchments.
— BMPs 1, 2, and 3 for a given catchment are assumed to operate in series, with the
outflow from 1 serving as the inflow to 2, etc.
— Ifthe outflow from an entire catchment (including outflow from selected BMPs) drains to
another BMP, indicate this in the drop down menu below the BMP type and leave all cells
for individual land uses blank.
— Not all BMP or catchments must be utilized. Simply leave fields blank in the columns not
needed.
— Leave cells blank or insert zeroes if a land use is not present in the area draining to the
BMP.
— For water harvesting BMPs, be sure to enter the percent volume reduction that will be
achieved by your system. Volume detention (catch -and -release mechanisms) will not be
considered - only proven volume reductions are valid inputs.
— Volume reduction efficiencies for undersized BMPs are calculated based on a 1:1 ratio (a
BMP that is 6D% smaller than the required design size the assigned removal efficiency is
60%ofthe standard efficiency value). Effluent concentrations remain the same as full-
sized BMPs.
— IMPORTANT: forthe land area calculation checks to occur, you MUST press enter after
entering a value for area to be treated by a BMP (not just click on the next cell).
— See User's Manual for instructions or modeling oversized BMPs.
IR.Model Methodology (more detailed information in User's Manual)
— Calculating Runoff Volumes —Simple Method (CWP, 2007)
— A fraction of impervious cover was assigned to each land use based on literature
review and field exploration.
— A runoff coefficient, Rv, is calculated for each land use using the designated
impervious cover fractions. The total volume of runoff is then calculated based
on the land use area, Rv, and the precipitation depth ofthe water quality event.
— Calculating Pollutant Loadings —Simple Method (CWP, 2607)
— An event mean concentration of TN and TP is assigned for each land use type
based on an extensive literature review.
— The total load of a given pollutant for a defined drainage area is calculated
based on the average annual rainfall depth, the runoff coefficient Rv, and the
representative event mean concentration value.
— The fraction of rainfall events that produce runoff is assumed to be I.D.
— HMP Removal Calculations
— Each BMP is assigned a representative event mean concentration forthe
treated outflow leaving the system, as well as percentages of inflow that leave
the system as infiltration, evapotranspiration, overflow and outflow.
— The total mass of pollutant leaving the BMP is calculated using the following
equation: Mass., = (EMC,u ,t *Volumeo,rujm)+ (EMC;,xiv,,,*Volumec.,ertiv,,,,)
— The percent mass removal achieved by the BMP system is calculated using the
following equation:
%Removal=((EMC,ril ,*Volumeirvl. )-Masso )-. EMCifio�*Volumeinfow)*100
Triassic Basin
Piedmont
Locations for which rainfall data is available. Choose the location that most closely represents the site's precipitation characteristics (not necessarily the location that is geographically the
closest) on the "Watershed Characteristics" page.
Table 1. List of counties located within, or partially within, each region.
PIEDMONT & MOUNTAIN
COASTAL PLAIN
CAMA Counties
TRIASSIC BASIN
SANDHILLS
Rockingham Lee
Bladen
Beaufort
Durham
Montgomery
Alamance Lincoln
Columbus
Bertie
Granville
Moore
Alexander Macon
Cumberland
Brunswick
Wake
Lee
Alleghany Madison
Duplin
Camden
Chatham
Harnett
Anson McDowell
Edgecombe
Carteret
Lee
Cumberland
Ashe Mecklenburg
Halifax
Chowan
Moore
Hoke
Avery Mitchell
Harnett
Craven
Montgomery
Robeson
Buncombe Montgomery
Hoke
Currituck
Richmond
Scotland
BurkeMoore
Johnston
Dare
Anson
Richmond
Cabarrus Nash
Jones
Gates
Union
Caldwell Northampton
Martin
Hertford
Rockingham
Caswell Orange
Moore
Hyde
Stokes
Catawba Person
Nash
New Hanover
Davie
Chatham Polk
Northampton
Onslow
Cherokee Randolph
Pitt
Pamlico
Clay Richmond
Richmond
Pasquotank
Cleveland Rowan
Robeson
Pender
Davidson Rutherford
Sampson
Perquimans
Davie Stanley
Scotland
Tyrrell
Durham Stokes
Wake
Washington
Forsyth Surry
Wayne
Franklin Swain
Gaston Transylvania
Graham Union
Granville Vance
Guilford Wake
Halifax Warren
Harnett Watauga
Haywood Wilkes
Henderson Wilson
Iredell Yadkin
Jackson Yancey
Johnston

Watershed Characteristics Ver2.0l
Clear All Values � Return to Instructions l Proceed to BMP Characteristics J Skip to Development Summary l
Instructions
1. Select your physiographic/geologic region. (see map on 'instructions' page)
2. Enter the area of the entire development in square feet (ft).
3. Select the location that is most representative of the site's precipitation characteristics. (see map on 'instructions' page)
4. For each applicable land use, enter the total area of that land use that lies within the development under pre -development conditions.
5. For each applicable land use, enter the total area of that land use that lies within the development under post -development conditions, before BMP implementation.
6. Ensure that the sum of pre- and post -development areas entered equal the orginal development area.
7. Continue to "BMP Characteristics" tab.
Additional Guidelines
For non-residential watersheds, indicate acreages of each land use type in Column 1 for both pre- and post -development conditions.
For residential watersheds, complete the required information in Column 2 for both pre- and post -development conditions.
If a given land use is not present in the given watershed, leave the cell blank or enter a zero.
Ensure that land use areas entered for both pre- and post -development conditions match the total development area entered in cell 021.
Residential areas may be entered by average lot size (column, part A), or may be separated into individual land uses (column 2, part B) -- do NOT list out individual land uses within an
area already described by lot size.
Unless runoff flowing onto the development from offsite is routed separately around or through the site, the offsite catchment area draining in must be included in the acreage
values of the appropriate land use(s) and treated.
Physiographic/Geologic Region: Piedmont
Soil Hydrologic Group D
Precipitation location: Raleigh
COLUMN 1 NON-RESIDENTIAL LAND USES
COLUMN 2 -- RESIDENTIAL LAND USES
Pre-
Post -
Lot Size Age TN EMC TP EMC Development
Development
TN EMC
TP EMC
Development
Development
(mg/L)
(mg/L)
W)
W)
%-ac lots
COMMERCIAL
Y -ac lots
Parking lot
1.44
0.16
1 272,887
Roof
1.08
0.15
7,312
1 140,254
Open/Landscaped
2.24
0.44
894,819
INDUSTRIAL
Townhomes
Parking lot
1.44
0.39
Roof
1.08
0.15
Roadway
1.4 0.52
Open/Landscaped
2.24
0.44
Parking lot
1.44 0.39
TRANSPORTATION
Roof
1.08 0.15
Sidewalk/Patio
1.4 1.16
High Density (interstate, main)
3.67
0.43
Managed pervious
3.06 0.59
Low Density (secondary, feeder)
1.4
0.52
47,349
-- -- --
Rural
1.14
0.47
13,300
1 3,289
Sidewalk
1.4
1.16
99,813
PERVIOUS
Managed pervious
3.06
0.59
43,560
Unmanaged (pasture)
3.61
1.56
699,754
Forest
1.47
0.25
837,100
104,830
JURISDICTIONAL LANDS*
Natural wetland
27,474
17,428
Riparian buffer
126,410
126,410
Open water
40,520
40,520
LAND TAKEN UP BY BMPs
1.08
0.15
0
47,831
*Jurisdictional land uses are not included in nutrient/flow calculations.
Total Development Area (W): 1,795,430
Development Name: M16 Middle School
Model Prepared By: I Kenneth Loring, PE PLS, CLH Design PA
LAND USE AREA CHECK
Total Development Area Entered (ft): 1,795,430
Total Pre -Development Calculated Area (ft): 1,795,430
Total Post -Development Calculated Area (ft): 1,795,430
COLUMN 2 -- RESIDENTIAL LAND USES
Custom Pre- Post -
Lot Size Age TN EMC TP EMC Development
Development
(ac) (yrs) (mg/L) (mg/L) (ft')
(ft')
PART A
%-ac lots
%-ac lots
Y -ac lots
1 -ac lots
2 -ac lots
Multi -family
Townhomes
Custom Lot Size
PART B
Roadway
1.4 0.52
Driveway
1.0 1.44 0.39
Parking lot
1.44 0.39
Roof
1.08 0.15
Sidewalk/Patio
1.4 1.16
Lawn
2.24 0.44
Managed pervious
3.06 0.59
1.47 0.25
_Forest
Natural wetland*
-- -- --
Riparian buffer*
Open water*
LAND TAKEN UP BY BMPs
1.08 0.15
LAND USE AREA CHECK
Total Development Area Entered (ft): 1,795,430
Total Pre -Development Calculated Area (ft): 1,795,430
Total Post -Development Calculated Area (ft): 1,795,430

BMP Characteristics Ver -2.0 Return to watershed Proceed to Development
Clear All Values Return to Instructions Characteristics Summary
Instructions -
1. Select the type of BMP for each catchment.
2. Enter the area of each land use type in the contributing drainage area for each BMP.
3. Continue to "Development Summary" tab.
Additional Guidelines
- This spreadsheet allows the development to be divided into as many as 6 smaller catchments.
-BMPs 1, 2, and 3 for a given catchment are assumed to operate in series, with the outflow from 1 serving as the inflow to 2, etc.
- Ifthe outflow from an entire catchment (including outflow from selected BMPs) drains to another BMP, indicate this in the drop down menu below the BMP type and leave all cells for individual land uses blank.
Not all BMP or catchments most be utilized. Simply leave fields blank in the columns not needed.
- Leave cells blank or, n seft zeroes If a land use is not present in the area draining to the BMP.
- For water harvesting MPs, be sure to enter the percent volume reduction that will be achieved by your system. Volume detention (catch -and -release mechanisms) will not be considered - only proven volume reductions are valid inputs.
The BMP undersizina option should only be used for existing development or retrofit sites.
- Volume reduction efficiencies for undersized BMPs are calculated based on a 1:1 ratio (a BMP that is 6D%smaller than the required design size is assigned a removal efficiency equal to 5G% of the standard efficiency
value), Effluent concentrations remain the same as full-sized BMPs.
- IMPORTANT: for the land area calculation checks to occur, you MUST press enter after entering a value for area to be treated by a BMP (not just click on the rte# cell).
- See User's Manual for Instructions on modeling oversized BMPs.
BMP#1 BMP #2 2 BMP #3
Type of BMP: Wetland
If BMP is undersized, indicate the BMP', size
relative to the design size required to
capture the designated water quality depth
(i.e. 0.75 = BMP is 7'% of required design
s ze):
w
"For water, harvesting BMP, enter percent
volum reduction in decimal form.
E Catchment 1: -- -- --
Catchment 2: me no no
Catchment 3: no no no
Catchment 4: n0 no
Catchment 5: no no no
Catchment 6: no no no
Area treatedArea treated
Area Treated by BMP#2 that is by BMP#3 that is
Drainage Area Land Use by BMP not treated by BMP W treated by BMPs
(k21 #1 #1or#2
(ft2) (k2)
COMMERCIAL
Parking lot 79,637
Roof r4s7c,
Open/Landscaped 83,069
INDUSTRIAL
Parking lot
Roof
Open/Landscaped
TRANSPORTATION
High Density (interstate, main)
Low Density (s—rulz ,feeder) 9,572.
Rural
Sidewalk 27,714
MISC. PERVIOUS
Managed pervious
Unmanaged 1pasture)
Forest
RESIDENTIAL _
_ 2 -ac lot, (New)
_ 2 -ac lots (Built after 1995)
2 -ac lots (Built before 1995)
1 -ac lots (New)
1 -ac lots IBuih after 1995)
1 -ac lots IBuilt before 1995)
Y2 -ad lots (New)
Y. -ac lots (Built after 1995) _
Y2 -ac lots (Built before 1995) _
Y, -ac lots(New)
X -ac lots (Built after 1995)
Y< -ac lots (Built before 1995)
Y -ac lots (New)
Y. 'c lots (Built after 1995)
_ %-ac lots (Built before 1995)
Townhomes(New)
Townhomes (Built after 1995)
Townhomes (Built before 1995)
Multi -family (New)
Multi -family (Built after 1995)
Multi -family (Built before 1995)
Custom Lot Size (New)
Custom Let Size(Bout after 1995)
Custom Lot Size IBuilt before 1995)
Roadway
Driveway
Parking_ lot
Roof
Sidewalk
_ Lawn
Managed pervious
Forest
LAND TAKEN UP BY BMP 15,557
TOTAL AREA TREATED BY BMP (ft): 280,125 0 0
TOTAL AREA TREATED By SERIES (k2): 280,125
BMP DETAILS
BMP Volume Reduction (%) TN Effluent Concert. TP Effluent Concert.
(mg/L) (mg/L)
BMP#1
BMP#2
BMP#3
BMP#1
BMP#2
BMP#3
BMP #1
BMP#2 BMP#3
BMP#1
BMP#2
BMP#3
Wetland
Allowable Total Land
Area Treated
Wetland
by BMP b3 that ft
Total Land Use
Use Area to be
by BMP
not treated by BMP
not treated by BMPs
Area Treated By
Treated Based on
no
Does BMP
o
accept the outflow from
no
another Catchment?
no
If so, indicate which
no
one(s). (Land use areas
no
entered below
no
are in addition to the watershed areas treated by
no no
contributing
no
no
catchment(s).)
no
no
no
nono
no
no
no
no
no
no
no
no
no
no
no
no
no
no
no
no
no
no
no
no
no
--
no
no
no no
no n o
-- --
{III
no no
no no
"'
no
me
no
no
no
no
no
no
no
--
no
—
--
no
_ no i�
0
0
Area treated
Area treated
Area treated
Area treated
� 0
Area Area treated Area treated
0
Area treated
Area treated
Area Treated
by BMP #2 that is
by BMP #3 that is
Area Treated
by BMP #2 that is
by BMP #3 that Is
Area Treated
by BMP #2 that Is by BMP #3 that is
Area Treated
by BMP #2 that is
by BMP #3 that
by BMP
net treated by BMP
not treated by BMPs
by BMP
not treated by BMP not treated by BMPs
by BMP
not treated by BMP not treated by BMPs
by BMP
not treated by BMP
not treated by BI
(ft2)
#1
#1 or #2
It
#1
#1 or #2
(k2)
#1 #1 or #2
((t2)
#1
#1.,#2
(k2)
(ft')
(ft2)
(ft?)
(ft?) (ft2)
(k2)
(k2)
47,368
143,660
_
47,46
26,489
181.335
346,718
_
346,648
31,312
1/,/48
0 a 565,927 I 0 I 0
346,646 565,927
0
BMP#1 amp #2 — BMP#3
no
no
no
no
no
no
no
no
no
no
no
no
Area treated
no
Area treated
0
Allowable Total Land
Area Treated
by BMP #2 that Is
by BMP b3 that ft
Total Land Use
Use Area to be
by BMP
not treated by BMP
not treated by BMPs
Area Treated By
Treated Based on
(ft')
pl
/ft21
#1 or #2
Ift21
All BMPs
(ft)
Post-Dev. Areas
Ift21
0 0 0
0
0
0
0
0
� 0
0
0
0
0
0
0
0
0
0
0
_
0
0
� 0
0
� 0
0
0
0
0
0
0
0
0
0
� 0
� a
0
� 0
0
� 0
0
0
0
� 0
0
� 0
0
� 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0 0 0
0

Development: M16 Middle School
Prepared By: Kenneth Loring, PE PLS, CLH Design PA
Date: February 9, 2017
WATERSHED SUMMARY Ver2.0 BMP VOLUME REDUCTIONS/EFFLUENT CONCENTRATIONS
REGION:
Piedmont
TOTAL DEVELOPMENT AREA (ft):
1,795,430
Percent Impervious (%)
37%
37%
0%
Pre -Development Conditions
Post -Development Conditions
Post -Development w/ Mips
Percent Impervious
1.3%
38.0%
38.0%
(%)
Total Nitrogen Loading (Ib/ac/yr)
301%
176%
Annual Runoff Volume
Total Phosphorus EMC(mg/L)
-52%
-76%
(c.f.)
373,127
2,387,182
1,955,190
Total Nitrogen EMC
Grassed Swale
0%
1.21.
(mg/L)
2.19
1.38
1.17
Total Nitrogen Loading
Level Spdr, Filter
-
--
(Ib/ac/yr)
1.39
5.58
3.84
0.15
Permeable
Total Area Treated
Total Phosphorus EMC
(mg/L)
0.74
0.36
0.18
0.39
Sand Filter
5%
Total Phosphorus Loading
(Ib/ac/yr)
0.47
1.43
0.59
Percent Difference Between:
`Negative percent difference values indicate a decrease in runoff volume, pollutant concentration or pollutant loading. Positive values indicate an increase.
BMP SUMMARY Ver2.0
Pre-Dev. &
Post-Dev. without BMPs
Pre -Development &
Post -Development with BMPs
Post-Dev without BMPs &
Post-Dev with BMPs
Percent Impervious (%)
37%
37%
0%
Annual Runoff Volume (c.f.)
540%
424%
-18%
Total Nitrogen EMC (mg/L)
-37%
-47%
-16%
Total Nitrogen Loading (Ib/ac/yr)
301%
176%
-31%
Total Phosphorus EMC(mg/L)
-52%
-76%
-50%
Total Phosphorus Loading (Ib/ac/yr)
1 204%
1 25% 1
-59%
`Negative percent difference values indicate a decrease in runoff volume, pollutant concentration or pollutant loading. Positive values indicate an increase.
BMP SUMMARY Ver2.0
*it treating commercial parking lot, TP effluent concentration = 0.16 mg/L
LReturn to Instructions
LReturn to Watershed Characteristics J
Return to BMP Characteristics
Print Summary I
Volume Reduction
TN Effluent Concert.
TP Effluent Concert.
CATCHMENT 4
(%)
(mg/L)
(mg/L)
Bioretention with
BMP2
BMP3
BMP1
IWS
50%
0.95
0.12
Bioretention
BMPS
BMP2
BMP3
without IWS
35%
1.00
0.12
Dry Detention Pond
0%
1.20
0.20
Grassed Swale
0%
1.21.
0.26
Green Roof
50%
1.08
0.15
Level Spdr, Filter
-
--
-
Strip
40%
1,20
0.15
Permeable
Total Area Treated
-
-
Pavement -
0%
1.44
0.39
Sand Filter
5%
0.92
0,14
Water Harvesting
user defined
1.08
0.15
Wet Detention Pond
10%
1.01
0.11
Wetland
20%
1.08
0.12
*it treating commercial parking lot, TP effluent concentration = 0.16 mg/L
LReturn to Instructions
LReturn to Watershed Characteristics J
Return to BMP Characteristics
Print Summary I
BMP Outflow
Nitrogen (lbs/ac/yr)
BMP Outflow
Phosphorus(lbs/ac/yr) 0.80 - - 0.60 - - 0.46 - - - - - - - - - - -
Catchment Outflow Nitrogen EMC (mg/L)
CATCHMENT 1
CATCHMENT 2
CATCHMENT 3
CATCHMENT 4
CATCHMENT 5
CATCHMENT 6
Catchment Outflow
BMP1
BMP2
BMP3
BMP1
BMP2
BMP3
BMPS
BMP2
BMP3
BMPS
BMP2
BMP3
BMPS
BMP2
BMP3
BMP1
BMP2
BMP3
Wetland
--
-
Wetland
-
--
Wetland
--
-
--
-
-
--
-
--
-
--
-
0.601
Total Area Treated
-
-
--
Total Phosphorus (Ib/ac/yr)
Percent Reduction in Phosphorus Load (%) 64%
22%
64%
-
-
-
(ac)
6.43
-
-
7.96
-
-
12.99
-
--
-
-
-
-
-
-
--
--
--
Total Inflow Volume
(c.f.)
727,069
-
--
621,134
--
--
857,007
-
--
-
--
--
--
-
--
--
-
--
Percent Volume Reduced
(%)
20%
-
--
20%
-
-
20%
-
--
-
--
--
--
-
-
--
--
-
Inflow Nitrogen EMC
(mg/L)
1.31
-
--
1.34
--
--
1.43
-
--
--
--
--
--
--
--
--
--
--
Total Inflow Nitrogen
(Ib/ac/yr)
9.22
-
--
6.54
--
--
5.88
-
--
--
--
--
--
-
--
--
--
--
Inflow Phosphorus EMC
(mg/L)
0.316
--
--
0.418
--
--
0.311
--
--
--
--
--
--
--
--
--
--
--
Total Inflow Phosphorus
(Ib/ac/yr)
2.23
-
--
2.04
-
-
1.28
-
--
-
-
-
-
-
-
--
-
-
BMP Outflow
Nitrogen (lbs/ac/yr)
BMP Outflow
Phosphorus(lbs/ac/yr) 0.80 - - 0.60 - - 0.46 - - - - - - - - - - -
Catchment Outflow Nitrogen EMC (mg/L)
1.11
1.11
1.12
-
--
-
Catchment Outflow
6.24
4.33
3.69
-
--
--
Total Nitrogen (Ib/ac/yr)
Percent Reduction in Nitrogen Load (%)
32%
34%
37%
-
--
--
Catchment Outflow Phosphorus EMC
0.142
0.155
0.141
-
--
-
(mg/L)
Catchment Outflow
0.800
0.601
0.464
-
-
--
Total Phosphorus (Ib/ac/yr)
Percent Reduction in Phosphorus Load (%) 64%
22%
64%
-
-
-

Storm Drainage System

io ' 8
DATE
1-27-17
DESIGN PHASE
PRELIM
CONSTR
REVISION
RECORD
OTHER
(SPECIFY)
(J
a
PROJECT NAME
116 Middle School
PROJECT NO
15-188
LOCATION
Cary, NC
BY
KAL
CHECKED BY
INLET SCHEDULE Grate opening area: 3.08 sf
Intensity: 4 in/hr Grate weir length: 5.17 ft
INLET Inlet Total Bypass
INLET Cc Bypass Bypass Capacity Flow in Length Longitudianl Slope of Cross Mannings Basin Flow Depth of Spread
STRUCTURE AREA RUNOFF in -flow in -flow Coeff. gutter of curb slope gutter at slope of Roughness Bypass Capacity To next inlet flow in (T - ft) # of
(INLET) (AC) COEFF. (cfs) (from) K (cfs) inlet (ft) (ft/ft) opening (ft/ft) road (ft/ft) (n) To Inlet # (cfs) (cfs) NOTES gutter (ft) < 8' Remarks Inlets
Public Road A
B1
0.62
0.89
0.00
-
23
2.21
3
0.0260
0.080
0.04
0.015
B2
1.64
0.56
TYPE G
0.21
5.13
OK
1
B2
0.07
0.92
0.56
131
22
0.82
3
0.0190
0.068
0.028
0.015
B3
0.75
0.07
TYPE G
0.13
4.70
OK
1
B3
0.09
0.92
0.07
B2
36
0.41
3
0.0250
0.048
0.008
0.015
C1
0.33
0.08
TYPE G
0.06
7.49
OK
1
C1
0.81
0.75
0.08
B3
23
2.51
3
0.0120
0.071
0.031
0.015
C2
1.93
0.58
TYPE F
0.23
7.30
OK
1
C2
0.16
0.89
0.00
C1
23
0.57
3
0.0125
0.060
0.02
0.015
D60
0.57
0.00
TYPE F
0.11
5.46
OK
1
C4
0.02
0.89
0.00
34
0.07
3
0.0230
0.050
0.01
0.015
D70
0.12
0.00
TYPE F
0.03
3.45
OK
1
D2
0.44
0.53
0.00
20
0.93
3
0.0180
0.080
0.04
0.015
D3
0.94
0.00
TYPE G
0.16
3.98
OK
1
D3
0.67
0.63
0.00
D2
24
1.69
3
0.0340
0.080
0.04
0.015
D4
1.33
0.36
TYPE G
0.18
4.41
OK
1
D4
0.54
0.66
0.36
D3
27
1.78
3
0.0510
0.080
0.04
0.015
D5
1.37
0.42
TYPE G
0.17
4.17
OK
1
D5
0.79
0.50
0.42
D4
30
2.00
3
0.0300
0.060
0.02
0.015
D6
1.25
0.75
TYPE G
0.15
7.42
OK
1
D6
0.26
0.89
0.75
D5
27
1.67
3
0.0200
0.060
0.02
0.015
D7
1.14
0.53
TYPE G
0.15
7.50
OK
1
D7
0.09
0.89
0.53
D6
21
0.85
3
0.0106
0.060
0.02
0.015
D70
0.71
0.14
TYPE G
0.13
6.56
OK
1
D70
0.11
0.89
0.14
D2,D6
10
0.53
3
0.0030
0.060
0.02
0.015
SAG
6.01
0.00
TYPE E
0.14
6.97
OK
1
D8
0.18
0.89
0.00
-
21
0.64
3
0.0106
0.060
0.02
0.015
D70
0.59
0.05
TYPE F
0.12
5.89
OK
1
D70
0.11
0.89
0.14
C4,D7
10
0.53
3
0.0030
0.060
0.02
0.015
SAG
6.01
0.00
TYPE E
0.14
6.97
OK
1
Winding Pine Trail
E2
0.55
0.50
0.00
22
1.10
3
0.0110
0.060
0.02
0.015
E3
0.86
0.24
TYPE G
0.14
7.16
OK
1
E3
0.02
0.63
0.24
22
0.29
3
0.0100
0.060
0.02
0.015
EX CB
0.38
0.00
TYPE G
0.09
4.41
OK
1
E4
0.24
0.85
0.00
21
0.82
3
0.0100
0.060
0.02
0.015
EX CB
0.70
0.11
TYPE F
0.13
6.52
OK
1
F4
0.02
0.63
0.00
20
0.05
3
0.0050
0.060
0.02
0.015
F3
0.15
0.00
TYPE G
0.05
2.61
OK
1
F3
0.05
0.63
0.00
F4
20
0.13
3
0.0060
0.060
0.02
0.015
F2
0.24
0.00
TYPE G
0.07
3.56
OK
1
F2
0.16
0.50
0.00
F3
10
0.32
3
0.0030
0.060
0.02
0.015
SAG
5.38
0.00
TYPE E
0.12
5.75
OK
1
F1
0.19
0.89
0.00
10
0.68
3
0.0030
0.060
0.02
0.015
SAG
6.32
0.00
TYPE E
0.15
7.62
OK
1
G1
0.28
0.85
0.00
22
0.95
3
0.0130
0.060
0.02
0.015
G32
0.75
0.20
TYPE G
0.13
6.58
OK
1
G2
0.43
0.50
0.00
22
0.86
3
0.0100
0.060
0.02
0.015
G3
0.76
0.10
TYPE F
0.13
6.65
OK
1
G30
0.25
0.63
0.00
20
0.63
3
0.0086
0.060
0.02
0.015
G3
0.60
0.03
TYPE G
0.12
6.09
OK
1
G31
0.25
0.85
0.00
20
0.85
3
0.0086
0.060
0.02
0.015
G32
0.72
0.13
TYPE F
0.14
6.81
OK
1

'
DATE
1-27-17
DESIGN PHASE
PRELIM
CONSTR
REVISION
RECORD
OTHER
(SPECIFY)
G
PROJECT NAME
M16 Middle School
PROJECT NO
15-188
LOCATION
Ca , NC
BY
KAL
CHECKED BY
INLET SCHEDULE Grate opening area: 3.08 sf
Intensity: 4 in/hr Grate weir length: 5.17 ft
INLET
STRUCTURE AREA
(INLET) (AC)
INLET
Cc
RUNOFF
COEFF.
Bypass
in -flow
(cfs)
Bypass
in -flow
(from)
Inlet Total
Capacity Flow in
Coeff. gutter
K (cfs)
Length
of curb
inlet (ft)
Longitudianl
slope
(ft/ft)
Slope of Cross
gutter at slope of
opening (ft/ft) road (ft/ft)
Mannings
Roughness
(n)
Bypass
To Inlet #
Basin
Capacity
(cfs)
Bypass
Flow
To next inlet
(cfs)
Depth of
flow in
NOTES gutter (ft)
Spread
(T - ft)
< 8' Remarks
# of
Inlets
G3
0.08
0.63
0.13
G2,G30
10
0.33
3
0.0030
0.060
0.02
0.015
SAG
5.42
0.00
TYPE E
0.12
5.83
OK
1
G32
0.06
0.85
0.33
G1,G31
10
0.54
3
0.0030
0.060
0.02
0.015
SAG
6.01
0.00
TYPE E
0.14
6.99
OK
1

D1-27-17
PROJECT NAME
M16 Middle School
DATE
DESIGN PHASE
PRELIM /x /
CONSTR
REVISION
PROJECT NO
15-188
LOCATION
Cary, INC
BY
KAL
RECORD
OTHER
CHECKED BY
(SPECIFY)
n= 0.013
9= 195
h= 22
STORM DRAINAGE SCHEDULE CONTINUED
1= 7.22
INLET
AREA
(SF)
INLET
AREA
(AC)
IMPERVIOUS
M
INLET
Cc
RUNOFF
COEFF.
INLET
DISCHARGE
(CFS)
TOTAL
AREAS
(AC)
INLET
TIME
(MIN)
PIPE
TIME
(MIN)
Tc
TIME
OF CONC.
(MIN)
I
INTENSITY
(IN/HR)
Cc
RUNOFF
COEFF.
FROM TO
15,110 0.35 80 0.82 2.05 0.35 5.00 0.00 5.00 7.22 0.82
Al
A2
A2
A3
42,370
0.97
5
0.33
2.34
1.32 5.00
0.21 5.21
7.17
0.46
A3
A4
35,540
0.82
5
0.33
1.96
2.14 5.00
0.87 5.87
7.00
0.41
A4
A5
26,690
0.61
5
0.33
1.47
2.75 5.00
0.92 5.92
6.99
0.39
A5
A6
2,290
0.05
90
0.89
0.34
2.80 5.00
1.20 6.20
6.91
0.40
A6
A7
5,800
0.13
40
0.56
0.54
2.93 5.00
1.32 6.32
6.89
0.41
A7
A8
6,680
0.15
90
0.89
0.98
3.09 5.00
1.40 6.40
6.87
0.43
A8
A9
16,860
0.39
85
0.85
2.38
3.47 5.00
1.52 6.52
6.84
0.48
A40
A4
5,520
0.13
10
0.37
0.33
0.13 5.00
0.00 5.00
7.22
0.37
A70
A7
6,920
0.16
0
0.30
0.34
0.16 5.00
0.00 5.00
7.22
0.30
61
B2
26,860
0.62
90
0.89
3.94
0.62 5.00
0.00 5.00
7.22
0.89
B2
B3
2,880
0.07
95
0.92
0.44
0.68 5.00
0.08 5.08
7.20
0.89
B3
B4
3,400
0.08
95
0.92
0.52
0.76 5.00
0.21 5.21
7.17
0.89
B4
B5
1,210
0.03
95
0.92
0.18
0.79 5.00
0.44 5.44
7.11
0.89
65
66
860
0.02
95
0.92
0.13
0.81 5.00
0.53 5.53
7.08
0.89
C1
C2
35,320
0.81
69
0.75
4.38
0.81 5.00
0.00 5.00
7.22
0.75
C2
C3
6,890
0.16
90
0.89
1.01
0.97 5.00
0.21 5.21
7.17
0.77
C3
C4
1,000
0.02
90
0.89
0.15
0.99 5.00
0.33 5.33
7.14
0.77
D1
D2
19,290
0.44
40
0.56
1.79
0.44 5.00
0.00 5.00
7.22
0.56
D2
D3
1,000
0.02
90
0.89
0.15
0.47 5.00
0.02 5.02
7.22
0.58
D3
D4
29,020
0.67
40
0.56
2.69
1.13 5.00
0.31 5.31
7.14
0.57
D4
D5
23,350
0.54
50
0.63
2.42
1.67 5.00
0.53 5.53
7.08
0.59
D5
D6
8,390
0.19
90
0.89
1.23
1.86 5.00
0.63 5.63
7.06
0.62
D6 D7
11,260
0.26
90
0.89
1.65
2.12 5.00
0.87 5.87
7.00 0.65
15-188 STRM-2nd SPSTORM Page 1 of 24

D1-27-17
liqll
PROJECT NAME
M16 Middle School
DATE
PROJECT NO
15-188
DESIGN PHASE
PRELIM /x /
CONSTR
REVISION
RECORD
OTHER
(SPECIFY)
LOCATION
Cary, NC
BY
KAL
CHECKED BY
n= 0.013 STORM DRAINAGE SCHEDULE -CONTINUED
9= 195
h= 22
1= 7.22 Q
FROM TO DISCHARGE
(CFS)
Q
SIDE-
STREAM
(CFS)
SLOPE
DIA.
(IN)
CAPACITY
(FULL)
(CFS)
V FULL
(FPS)
LENGTH
(FT)
SEGMENT
TIME
(MIN)
UPPER
INV.
(FT)
LOWER
INV.
(FT)
UPSTREAM
TOP
ELEV.
(FT)
PIPE
COVER
(FT)
A2 2.05 0.00 0.0094 15 6.3 5.1 64 0.21 290.60 290.00 299.20 7.24
A3 4.36 0.00 0.0160 15 8.2 6.6 263 0.66 289.90 285.70 295.00 3.74
Al
A2
A3
A4 12.54 6.39
0.0468
24
48.9
15.6
44
0.05
285.56
283.50
295.20
7.46
A4
A5 14.29 0.33
0.0104
24
23.1
7.3
125
0.28
283.40
282.10
287.50
1.92
A5
A6 14.53 0.00
0.0085
24
20.9
6.6
47
0.12
282.00
281.60
288.10
3.92
A6
A7 15.01 0.00
0.0159
24
28.5
9.1
44
0.08
281.50
280.80
287.60
3.92
A7
A8 25.77 9.84
0.0100
36
66.7
9.4
70
0.12
280.20
279.50
287.18
3.71
A8
A9 40.98 13.00
0.0085
36
61.5
8.7
47
0.09
279.40
279.00
288.41
5.74
A40
A4 0.33 0.00
0.0104
15
6.6
5.4
48
0.15
284.50
284.00
289.65
3.79
A70
A7 9.84 9.50
0.0100
30
41.0
8.3
10
0.02
280.90
280.80
286.50
2.87
B1
B2 3.94 0.00
0.0171
15
8.5
6.9
35
0.08
283.40
282.80
288.53
3.77
B2
B3 4.37 0.00
0.0246
15
10.1
8.2
61
0.12
282.70
281.20
287.83
3.77
B3
B4 4.86 0.00
0.0080
18
9.4
5.3
75
0.24
281.10
280.50
286.51
3.77
B4
B5 5.00 0.00
0.0086
18
9.8
5.5
29
0.09
280.40
280.15
287.40
5.36
B5
B6 5.11 0.00
0.0073
24
19.4
6.2
75
0.20
280.05
279.50
288.20
5.97
C1
C2 4.38 0.00
0.0196
15
9.0
7.4
92
0.21
270.90
269.10
276.05
3.79
C2
C3 5.35 0.00
0.0111
18
11.1
6.3
45
0.12
269.00
268.50
274.51
3.87
C3
C4 5.47 0.00
0.0533
18
24.3
13.7
30
0.04
268.40
266.80
274.71
4.67
D1
D2 1.79 0.00
0.0905
15
19.4
15.8
21
0.02
290.50
288.60
293.00
1.14
D2
D3 1.94 0.00
0.0246
15
10.1
8.3
142
0.29
288.50
285.00
293.59
3.73
D3
D4 4.58 0.00
0.0522
15
14.8
12.0
159
0.22
284.90
276.60
290.08
3.82
D4
D5 6.92 0.00
0.0372
24
43.6
13.9
86
0.10
276.50
273.30
282.50
3.82
D5
D6 11.56 3.47
0.0203
24
32.2
10.2
148
0.24
273.20
270.20
279.45
4.07
D6 D7 13.09 0.00
0.0133
24
26.1
8.3
113
0.23
270.10
268.60 276.14 3.86
15-188 STRM-2nd SPSTORM Page 2 of 24

D1-27-17
liqll III
PROJECT NAME
M16 Middle School
DATE
PROJECT NO
15-188
DESIGN PHASE
PRELIM /x /
CONSTR
REVISION
LOCATION
Cary, NC
BY
KAL
RECORD
OTHER
CHECKED BY
(SPECIFY)
n= 0.013
9= 195
h= 22
1= 7.22
HYDRAULIC GRADE LINE CONTINUED
BEND LOSS K's
90° = 0.70 70'= 0.61 50'= 0.47 30'= 0.28 20'= 0.16
80° = 0.66 60° = 0.55 40° = 0.38 25° = 0.22 15° = 0.10
PIPE HYDRAULIC SIDESTREAM HEAD LOSS BEND FRICTION FRICTION
AREA RADIUS SUMMATION Hf He He Hb Ht LOSS SLOPE VELOCITY
(FT) (FT) (CFS) K (FT/FT) (FPS)
FROM TO
A2
1.2272 0.3125 0.00
0.08 0.00 0.0010 1.67
Al
0.06
0.01
0.00
0.00
A2
A3
1.2272
0.3125
0.00
1.19
0.05
0.02
0.00
1.25 0.00
0.0045
3.54
A3
A4
3.1416
0.5000
6.39
0.13
0.06
0.07
0.14
0.40 0.70
0.0030
3.97
A4
A5
3.1416
0.5000
6.72
0.49
0.08
0.09
0.17
0.83 0.70
0.0040
4.52
A5
A6
3.1416
0.5000
6.72
0.19
0.08
0.11
0.09
0.47 0.28
0.0041
4.60
A6
A7
3.1416
0.5000
6.72
0.19
0.09
0.12
0.03
0.43 0.10
0.0044
4.75
A7
A8
7.0686
0.7500
16.57
0.10
0.05
0.12
0.04
0.31 0.10
0.0015
3.62
A8
A9
7.0686
0.7500
29.57
0.18
0.13
0.07
0.06
0.43 0.28
0.0037
5.76
A40
A4
1.2272
0.3125
0.00
0.00
0.00
0.00
0.00
0.00 0.00
0.0000
0.27
A70
A7
4.9087
0.6250
9.50
0.01
0.02
0.00
0.00
0.02 0.00
0.0006
1.99
61
B2
1.2272
0.3125
0.00
0.13
0.04
0.00
0.00
0.17 0.00
0.0037
3.20
B2
B3
1.2272
0.3125
0.00
0.28
0.05
0.06
0.00
0.38 0.00
0.0045
3.54
B3
B4
1.7671
0.3750
0.00
0.16
0.03
0.07
0.14
0.39 0.70
0.0021
2.74
B4
B5
1.7671
0.3750
0.00
0.07
0.03
0.04
0.03
0.17 0.28
0.0023
2.82
B5
B6
3.1416
0.5000
0.00
0.04
0.01
0.04
0.08
0.17 0.61
0.0005
1.62
C1
C2
1.2272
0.3125
0.00
0.42
0.05
0.00
0.00
0.47 0.00
0.0046
3.56
C2
C3
1.7671
0.3750
0.00
0.12
0.04
0.07
0.00
0.22 0.00
0.0026
3.02
C3
C4
1.7671
0.3750
0.00
0.08
0.04
0.05
0.10
0.27 0.70
0.0027
3.08
D1
D2
1.2272
0.3125
0.00
0.02
0.01
0.00
0.00
0.02 0.00
0.0008
1.45
D2
D3
1.2272
0.3125
0.00
0.13
0.01
0.01
0.00
0.15 0.10
0.0009
1.57
D3
D4
1.2272
0.3125
0.00
0.80
0.05
0.01
0.01
0.87 0.28
0.0050
3.72
D4
D5
3.1416
0.5000
0.00
0.08
0.02
0.08
0.02
0.19 0.10
0.0009
2.19
D5
D6
3.1416
0.5000
3.47
0.38
0.05
0.03
0.02
0.48 0.28
0.0026
3.66
D6 D7
3.1416
0.5000
3.47
0.38
0.07
0.07
0.02
0.54 0.10
0.0033 4.15
15-188 STRM-2nd SPSTORM Page 3 of 24

D1-27-17
liqll
DATE
PROJECT NO
15-188
DESIGN PHASE
PRELIM /x /
CONSTR
REVISION
PROJECT NAME
M16 Middle School
LOCATION
Cary, NC
BY
KAL
RECORD
OTHER
CHECKED BY
(SPECIFY)
n= 0.013
g= 195
h= 22
1= 7.22
HYDRAULIC GRADE LINE - CONTINUED
DESIGN CRITERIA:
1. DESIGN FOR THE 10 YR STORM
2. ASSUME TIME OF CONCENTRATION TO
AN INDIVIDUAL INLET = 5 MIN.
3. INTENSITY = g/(h+T), FOR 10 YR STORM
4. MANNINGS "n" FACTOR= .013
5. RATIONAL METHOD: C=.30 GRASS, C=.95 PAVEMENT
OUTLET
W.S. ELEV
(FT)
INLET W.S. ELEV.
FLOW
CONDITION
CONTROL
HW/D
(< 1.0)
UPSTREAM
INLET
TYPE
COMMENTS
FROM TO
OUTLET
CONTOL
(FT)
INLET
CONTROL
(FT)
USE
(FT)
291.07 291.14 291.35 291.35 INLET 0.60 CB OK
287.25 288.50 291.07 291.07 INLET 0.93 DI OK
Al
A2
A2
A3
A3
A4
285.29
285.69
287.25
287.25
INLET
0.84
DI
OK
A4
A5
283.96
284.79
285.29
285.29
INLET
0.95
CB
OK
A5
A6
283.49
283.96
283.92
283.96
OUTLET
0.98
CB
OK
A6
A7
282.66
283.09
283.49
283.49
INLET
0.99
CB
OK
A7
A8
282.35
282.66
282.27
282.66
OUTLET
0.82
CB
OK
A8
A9
281.40
281.83
282.35
282.35
INLET
0.98
CB
OK
Tailwater Elev=
281.40
A40
A4
285.29
285.29 285.13
285.29
OUTLET
0.63
CB
OK
Tailwater Elev=
285.29
A70
A7
282.80
282.82 282.32
282.82
OUTLET
0.77
DI
OK
Tailwater Elev=
282.80
B1
B2
283.87
284.04
284.47
284.47
INLET
0.86
CB
OK
B2
B3
282.18
282.56
283.87
283.87
INLET
0.94
CB
OK
B3
B4
281.74
282.13
282.18
282.18
INLET
0.72
CB
OK
B4
B5
281.57
281.74
281.50
281.74
OUTLET
0.89
CB
OK
B5
B6
281.40
281.57
281.16
281.57
OUTLET
0.76
CB
OK
Tailwater Elev=
281.40
C1
C2
270.15
270.62
272.08
272.08
INLET
0.94
CB
OK
C2
C3
269.56
269.78
270.15
270.15
INLET
0.76
CB
OK
C3
C4
268.00
268.27
269.56
269.56
INLET
0.78
CB
OK
Tailwater Elev=
268.00
D1
D2
289.23
289.26 291.22
291.22
INLET
0.57
FES
OK
D2
D3
286.13
286.28 289.23
289.23
INLET
0.59
CB
OK
D3
D4
277.71
278.58 286.13
286.13
INLET
0.98
CB
OK
D4
D5
274.78
274.98 277.71
277.71
INLET
0.60
CB
OK
D5
D6
271.85
272.33 274.78
274.78
INLET
0.79
CB
OK
D6 D7
270.36
270.89 271.85
271.85
INLET
0.87
CB
OK
15-188 STRM-2nd SPSTORM Page 4 of 24

D1-27-17
PROJECT NAME
M16 Middle School
DATE
DESIGN PHASE
PRELIM /x /
CONSTR
REVISION
PROJECT NO
15-188
LOCATION
Cary, INC
BY
KAL
RECORD
OTHER
CHECKED BY
(SPECIFY)
n= 0.013
9= 195
h= 22
STORM DRAINAGE SCHEDULE CONTINUED
1= 7.22
INLET
AREA
(SF)
INLET
AREA
(AC)
IMPERVIOUS
M
INLET
Cc
RUNOFF
COEFF.
INLET
DISCHARGE
(CFS)
TOTAL
AREAS
(AC)
INLET
TIME
(MIN)
PIPE
TIME
(MIN)
Tc
TIME
OF CONC.
(MIN)
I
INTENSITY
(IN/HR)
Cc
RUNOFF
COEFF.
FROM TO
D7 D8
D8 D9
1,880 0.04 90 0.89 0.28 2.16 5.00 1.10 6.10 6.94 0.65
7,810 0.18 90 0.89 1.15 2.34 5.00 1.15 6.15 6.93 0.67
33,470 0.77 50 0.63 3.47 0.77 5.00 0.00 5.00 7.22 0.63
4,870 0.11 90 0.89 0.71 0.11 5.00 0.00 5.00 7.22 0.89
D50
D5
D70
D7
D80
D8
4,940
0.11
90
0.89
0.72
0.11
5.00
0.00
5.00
7.22
0.89
E1
E2
12,790
0.29
0
0.30
0.64
0.29
5.00
0.00
5.00
7.22
0.30
E2
E3
23,910
0.55
30
0.50
1.96
0.84
5.00
0.08
5.08
7.20
0.43
E3
E4
1,040
0.02
50
0.63
0.11
0.87
5.00
0.20
5.20
7.17
0.43
E4
E5
10,320
0.24
85
0.85
1.46
1.10
5.00
0.28
5.28
7.15
0.52
F1
F2
8,100
0.19
90
0.89
1.19
0.19
5.00
0.00
5.00
7.22
0.89
F2
F3
7,170
0.16
40
0.56
0.67
0.35
5.00
0.10
5.10
7.20
0.73
F3
F4
2,020
0.05
50
0.63
0.21
0.40
5.00
0.36
5.36
7.13
0.72
F4
F5
710
0.02
50
0.63
0.07
0.41
5.00
0.59
5.59
7.07
0.72
G1
G2
10,510
0.24
85
0.85
1.49
0.24
5.00
0.00
5.00
7.22
0.85
G2
G3
18,280
0.42
30
0.50
1.50
0.66
5.00
0.09
5.09
7.20
0.63
G3
G4
3,870
0.09
50
0.63
0.40
0.75
5.00
0.29
5.29
7.14
0.63
G4
G5
11,540
0.26
0
0.30
0.57
1.01
5.00
0.37
5.37
7.12
0.54
G30
G31
10,890
0.25
85
0.85
1.54
0.25
5.00
0.00
5.00
7.22
0.85
G31
G32
10,890
0.25
50
0.63
1.13
0.50
5.00
0.09
5.09
7.20
0.74
G32
G3
10,890
0.25
50
0.63
1.13
0.75
5.00
0.28
5.28
7.15
0.70
H1 H2
9,680
0.22
90
0.89
1.42
0.22
5.00
0.00
5.00
7.22 0.89
H2 H3
1,150
0.03
80
0.82
0.16
0.25
5.00
0.10
5.10
7.20 0.88
15-188 STRM-2nd SPSTORM Page 5 of 24

D1-27-17
liqll
PROJECT NAME
M16 Middle School
DATE
PROJECT NO
15-188
DESIGN PHASE
PRELIM /x /
CONSTR
REVISION
RECORD
OTHER
(SPECIFY)
LOCATION
Cary, NC
BY
KAL
CHECKED BY
n= 0.013 STORM DRAINAGE SCHEDULE -CONTINUED
9= 195
h= 22
1= 7.22 Q
FROM TO DISCHARGE
(CFS)
Q
SIDE-
STREAM
(CFS)
SLOPE
DIA.
(IN)
CAPACITY
(FULL)
(CFS)
V FULL
(FPS)
LENGTH
(FT)
SEGMENT
TIME
(MIN)
UPPER
INV.
(FT)
LOWER
INV.
(FT)
UPSTREAM
TOP
ELEV.
(FT)
PIPE
COVER
(FT)
D7
D8
D8 13.99 0.0556 24 53.3 17.0 45 0.04 268.50 266.00 274.49 3.81
D9 15.80 0.0129 30 46.6 9.5 31 0.05 265.50 265.10 274.49 6.26
D5 3.47 0.00 0.0437 15 13.5 11.0 32 0.05 275.00 273.60 281.00 4.64
D7 0.71 0.00 0.0100 15 6.5 5.3 50 0.16 269.20 268.70 274.34 3.78
D50
D70
D80
D8 0.72
0.00
0.0100
15
6.5
5.3
50
0.16
269.20
268.70
274.34
3.78
E1
E2 0.64
0.00
0.0083
15
5.9
4.8
24
0.08
255.60
255.40
260.50
3.54
E2
E3 2.59
0.00
0.0067
15
5.3
4.3
30
0.12
255.30
255.10
260.45
3.79
E3
E4 2.69
0.00
0.0083
15
5.9
4.8
24
0.08
255.00
254.80
260.12
3.76
E4
E5 4.12
0.00
0.0050
15
4.6
3.7
80
0.36
254.70
254.30
260.12
4.06
F1
F2 1.19
0.00
0.0062
15
5.1
4.2
24
0.10
262.75
262.60
267.79
3.68
F2
F3 1.85
0.00
0.0057
18
7.9
4.5
70
0.26
262.50
262.10
267.79
3.65
F3
F4 2.04
0.00
0.0054
24
16.6
5.3
74
0.23
262.00
261.60
267.97
3.79
F4
F5 2.09
0.00
0.0054
24
16.6
5.3
56
0.18
261.50
261.20
268.45
4.77
G1
G2 1.49
0.00
0.0080
15
5.8
4.7
25
0.09
252.60
252.40
257.67
3.71
G2
G3 2.98
0.00
0.0060
15
5.0
4.1
50
0.20
252.30
252.00
257.67
4.01
G3
G4 7.11
3.76
0.0094
24
21.9
7.0
32
0.08
251.50
251.20
257.35
3.67
G4
G5 7.66
0.00
0.0053
30
29.8
6.1
57
0.16
251.10
250.80
257.50
3.67
G30
G31 1.54
0.00
0.0080
15
5.8
4.7
25
0.09
252.60
252.40
257.67
3.71
G31 G32 2.66
0.00
0.0063
15
5.1
4.2
48
0.19
252.30
252.00
257.67
4.01
G32 G3 3.76
0.00
0.0130
18
12.0
6.8
23
0.06
251.90
251.60
257.35
3.81
H1 H2 1.42
0.00
0.0100
15
6.5
5.3
30
0.10
280.30
280.00 285.50 3.84
H2 H3 1 4.43 2.86
0.0098
15
6.4
5.2
61
0.20 279.90 279.30 285.50 4.24
15-188 STRM-2nd SPSTORM Page 6 of 24

D
liqll III
PROJECT NAME
M16 Middle School
DATE
1-27-17
PROJECT NO
15-188
DESIGN PHASE
PRELIM /x /
CONSTR
REVISION
LOCATION
Cary, NC
BY
KAL
RECORD
OTHER
CHECKED BY
(SPECIFY)
n=
9=
h=
1=
0.013
195
22
7.22
HYDRAULIC
PIPE
AREA
(FT)
GRADE LINE
HYDRAULIC
RADIUS
(FT)
SIDESTREAM
SUMMATION
(CFS)
Hf
90° = 0.70
80° = 0.66
He
70'= 0.61
60° = 0.55
HEAD LOSS
He
BEND LOSS
50'= 0.47
40° = 0.38
Hb
K's
30'= 0.28
25° = 0.22
Ht
20'= 0.16
15° = 0.10
BEND
LOSS
K
CONTINUED
FRICTION
SLOPE
(FT/FT)
FRICTION
VELOCITY
(FPS)
FROM TO
D7
D8
D8
D9
3.1416
4.9087
0.5000
0.6250
4.18
4.91
0.17
0.05
0.08
0.04
0.09
0.11
0.19
0.03
0.53
0.22
0.70
0.10
0.0038
0.0015
4.43
3.20
D50
D5
1.2272
0.3125
0.00
0.09
0.03
0.00
0.00
0.12
0.00
0.0029
2.82
D70
D7
1.2272
0.3125
0.00
0.01
0.00
0.00
0.00
0.01
0.00
0.0001
0.58
D80
D8
1.2272
0.3125
0.00
0.01
0.00
0.00
0.00
0.01
0.00
0.0001
0.59
E1
E2
1.2272
0.3125
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.0001
0.52
E2
E3
1.2272
0.3125
0.00
0.05
0.02
0.00
0.00
0.07
0.70
0.0016
2.10
E3
E4
1.2272
0.3125
0.00
0.04
0.02
0.02
0.05
0.13
0.70
0.0017
2.18
E4
E5
1.2272
0.3125
0.00
0.32
0.04
0.03
0.02
0.41
0.28
0.0041
3.35
F1
F2
1.2272
0.3125
0.00
0.01
0.00
0.00
0.00
0.01
0.00
0.0003
0.96
F2
F3
1.7671
0.3750
0.00
0.02
0.00
0.01
0.01
0.04
0.70
0.0003
1.04
F3
F4
3.1416
0.5000
0.00
0.01
0.00
0.01
0.00
0.02
0.28
0.0001
0.64
F4
F5
3.1416
0.5000
0.00
0.00
0.00
0.00
0.00
0.01
0.70
0.0001
0.66
G1
G2
1.2272
0.3125
0.00
0.01
0.01
0.00
0.00
0.02
0.00
0.0005
1.21
G2
G3
1.2272
0.3125
0.00
0.11
0.02
0.01
0.02
0.15
0.70
0.0021
2.42
G3
G4
3.1416
0.5000
3.76
0.03
0.02
0.03
0.06
0.15
0.70
0.0010
2.25
G4
G5
4.9087
0.6250
3.76
0.02
0.01
0.03
0.04
0.10
0.55
0.0003
1.55
G30
G31
1.2272
0.3125
0.00
0.01
0.01
0.00
0.00
0.02
0.00
0.0006
1.25
G31
G32
1.2272
0.3125
0.00
0.08
0.02
0.01
0.02
0.12
0.70
0.0017
2.16
G32
G3
1.7671
0.3750
0.00
0.03
0.02
0.03
0.05
0.12
0.70
0.0013
2.12
H1
H2
1.2272
0.3125
0.00
0.01
0.01
0.00
0.00
0.02
0.00
0.0005
1.15
H2
H3
1.2272
0.3125
2.86
0.29
0.05
0.01
0.01
0.35
0.55
0.0047
3.60
15-188 STRM-2nd SPSTORM Page 7 of 24

D
liqll
DATE
1-27-17
PROJECT NO
15-188
DESIGN PHASE
PRELIM /x /
CONSTR
REVISION
PROJECT NAME
M16 Middle School
LOCATION
Cary, NC
BY
KAL
RECORD
OTHER
CHECKED BY
(SPECIFY)
n= 0.013
g= 195
h= 22
1= 7.22
HYDRAULIC GRADE LINE - CONTINUED
DESIGN CRITERIA:
1. DESIGN FOR THE 10 YR STORM
2. ASSUME TIME OF CONCENTRATION TO
AN INDIVIDUAL INLET = 5 MIN.
3. INTENSITY = g/(h+T), FOR 10 YR STORM
4. MANNINGS "n" FACTOR= .013
5. RATIONAL METHOD: C=.30 GRASS, C=.95 PAVEMENT
OUTLET
W.S. ELEV
(FT)
INLET W.S. ELEV.
FLOW
CONDITION
CONTROL
HW/D
(< 1.0)
UPSTREAM
INLET
TYPE
COMMENTS
FROM TO
OUTLET
CONTOL
(FT)
INLET
CONTROL
(FT)
USE
(FT)
D7
D8
D8
D9
267.32 267.85_ 270.36 270.36 INLET 0.93 CB OK
267.10 267.32 267.20 267.32 OUTLET 0.73 CB OK
Tailwater Elev= 267.10
D50
D5
274.78
274.91 275.97
275.97
INLET
0.78
DI OK
Tailwater Elev=
274.78
D70
D7
270.36
270.36 269.84
270.36
OUTLET
0.93
CB
OK
Tailwater Elev=
270.36
D80
D8
269.70
269.71 269.84
269.84
INLET
0.51
CB
OK
Tailwater Elev=
269.70
E1
E2
256.12
256.12
256.24
256.24
INLET
0.51
DI
OK
E2
E3
255.94
256.01
256.12
256.12
INLET
0.65
CB
OK
E3
E4
255.81
255.94
255.83
255.94
OUTLET
0.75
CB
OK
E4
E5
255.30
255.71
255.81
255.81
INLET
0.89
CB
OK
Tailwater Elev=
255.30
F1
F2
263.47
263.48
263.42
263.48
OUTLET
0.59
CB
OK
F2
F3
263.43
263.47
263.30
263.47
OUTLET
0.65
CB
OK
F3
F4
263.41
263.43
263.02
263.43
OUTLET
0.72
CB
OK
F4
F5
263.40
263.41
262.52
263.41
OUTLET
0.96
CB
OK
Tailwater Elev=
263.40
G1
G2
253.40
253.42
253.29
253.42
OUTLET
0.65
CB
OK
G2
G3
253.25
253.40
253.18
253.40
OUTLET
0.88
CB
OK
G3
G4
253.10
253.25
252.72
253.25
OUTLET
0.87
CB
OK
G4
G5
253.00
253.10
252.46
253.10
OUTLET
0.80
DI
OK
Tailwater Elev=
253.00
G30
G31
253.49
253.51
253.29
253.51
OUTLET
0.73
CB
OK
G31 G32
G32 G3
H1 H2
H2 H3
253.37
253.49
253.13
253.49
OUTLET
0.95
CB
OK
253.25
253.37
252.84
253.37
OUTLET
0.98
CB
OK
Tailwater Elev=
253.25
281.09 281.11
280.98
281.11
OUTLET
0.65
DI
OK
280.39 280.75
281.09
281.09
INLET
0.951
DI
OK
15-188 STRM-2nd SPSTORM Page 8 of 24

D1-27-17
PROJECT NAME
M16 Middle School
DATE
DESIGN PHASE
PRELIM /x /
CONSTR
REVISION
PROJECT NO
15-188
LOCATION
Cary, INC
BY
KAL
RECORD
OTHER
CHECKED BY
(SPECIFY)
n= 0.013
9= 195
h= 22
STORM DRAINAGE SCHEDULE CONTINUED
1= 7.22
INLET
AREA
(SF)
INLET
AREA
(AC)
IMPERVIOUS
M
INLET
Cc
RUNOFF
COEFF.
INLET
DISCHARGE
(CFS)
TOTAL
AREAS
(AC)
INLET
TIME
(MIN)
PIPE
TIME
(MIN)
Tc
TIME
OF CONC.
(MIN)
I
INTENSITY
(IN/HR)
Cc
RUNOFF
COEFF.
FROM TO
H3 H4
H4 H5
3,770 0.09 90 0.89 0.55 0.34 5.00 0.29 5.29 7.15 0.88
1,680 0.04 90 0.89 0.25 0.37 5.00 0.37 5.37 7.12 0.88
10,660 0.24 70 0.76 1.33 0.62 5.00 0.58 5.58 7.07 0.83
H5
H6
H6
H7
100
0.00
0
0.30
0.00
0.62
5.00
1.20
6.20
6.91
0.83
H7
H8
4,820
0.11
80
0.82
0.66
0.73
5.00
1.37
6.37
6.87
0.83
H8
H9
19,960
0.46
85
0.85
2.82
1.19
5.00
1.65
6.65
6.81
0.84
H9
H10
19,960
0.46
85
0.85
2.82
1.65
5.00
1.67
6.67
6.80
0.84
H10
H11
25,100
0.58
90
0.89
3.68
2.22
5.00
1.90
6.90
6.75
0.85
H11
H12
15,150
0.35
90
0.89
2.22
2.57
5.00
2.29
7.29
6.66
0.86
H12
H13
13,290
0.31
90
0.89
1.95
2.88
5.00
2.52
7.52
6.61
0.86
H2O
H21
11,470
0.26
95
0.92
1.74
0.26
5.00
0.00
5.00
7.22
0.92
H21
H2
2,810
0.06
80
0.82
0.38
0.33
5.00
0.03
5.03
7.21
0.90
H22
H2
4,830
0.11
95
0.92
0.73
0.11
5.00
0.00
5.00
7.22
0.92
H30
H3
4,570
0.10
95
0.92
0.70
0.10
5.00
0.00
5.00
7.22
0.92
H40
H4
1,950
0.04
90
0.89
0.29
0.04
5.00
0.00
5.00
7.22
0.89
H50
H5
12,590
0.29
70
0.76
1.58
0.29
5.00
0.00
5.00
7.22
0.76
H60
H6
30,260
0.69
85
0.85
4.28
0.69
5.00
0.00
5.00
7.22
0.85
H14
H12
11,910
0.27
50
0.63
1.23
0.27
5.00
0.00
5.00
7.22
0.63
J1
J2
5,220
0.12
50
0.63
0.54
0.12
5.00
0.00
5.00
7.22
0.63
J2
J3
2,220
0.05
85
0.85
0.31
0.17
5.00
0.09
5.09
7.20 0.69
K1 K2
8,960
0.21
95
0.92
1.36
0.21
5.00
0.00
5.00
7.22 0.92
15-188 STRM-2nd SPSTORM Page 9 of 24

D1-27-17
liqll
PROJECT NAME
M16 Middle School
DATE
PROJECT NO
15-188
DESIGN PHASE
PRELIM /x /
CONSTR
REVISION
RECORD
OTHER
(SPECIFY)
LOCATION
Cary, NC
BY
KAL
CHECKED BY
n= 0.013 STORM DRAINAGE SCHEDULE -CONTINUED
9= 195
h= 22
1= 7.22 Q
FROM TO DISCHARGE
(CFS)
Q
SIDE-
STREAM
(CFS)
SLOPE
DIA.
(IN)
CAPACITY
(FULL)
(CFS)
V FULL
(FPS)
LENGTH
(FT)
SEGMENT
TIME
(MIN)
UPPER
INV.
(FT)
LOWER
INV.
(FT)
UPSTREAM
TOP
ELEV.
(FT)
PIPE
COVER
(FT)
H3
H4
H4 5.66 0.70 0.0125 18 11.7 6.6 32 0.08 279.20 278.80 285.50 4.66
H5 6.18 0.29 0.0104 18 10.7 6.1 77 0.21 278.70 277.90 285.50 5.16
H5
H6 9.05
1.58
0.0100 24
22.7
7.2
269 0.62
277.80
275.10
284.78
4.80
H6
H7 13.25
4.28
0.0110 24
23.7
7.5
73 0.16
275.00
274.20
283.40
6.22
H7
H8 13.85
0.00
0.0109 24
23.6
7.5
129 0.29
274.10
272.70
282.75
6.47
H8
H9 16.47
0.00
0.0100 30
41.0
8.3
10 0.02
272.60
272.50
281.02
5.69
H9
H10 19.12
0.00
0.0104 30
41.9
8.5
115 0.22
272.40
271.20
281.02
5.89
H10
H11 22.49
0.00
0.0101 30
41.1
8.4
199 0.40
271.10
269.10
281.28
7.45
H11
H12 24.37
0.00
0.0322 30
73.6
15.0
199 0.22
269.00
262.60
280.75
9.02
H12
H13 27.27
1.23
0.0278 36
111.2
15.7
54 0.06
262.50
261.00
273.70
7.93
H2O
H21 1.74
0.00
0.0136 15
7.5
6.1
11 0.03
281.00
280.85
285.50
3.14
H21
H2 2.12
0.00
0.0109 15
6.8
5.5
32 0.10
280.75
280.40
285.50
3.39
H22
H2 0.73
0.00
0.0182 15
8.7
7.1
11 0.03
281.00
280.80
285.50
3.14
H30
H3 0.70
0.00
0.0182 15
8.7
7.1
11 0.03
281.00
280.80
285.50
3.14
H40
H4 0.29
0.00
0.0167 15
8.3
6.8
12 0.03
281.00
280.80
285.50
3.14
H50
H5 1.58
0.00
0.0119 15
7.0
5.7
126 0.37
279.50
278.00
284.60
3.74
H60
H6 4.28
0.00
0.0833 15
18.6
15.2
12 0.01
278.00
277.00
283.60
4.24
H14
H12 1.23
0.00
0.0167 15
8.3
6.8
30 0.07
268.50
268.00
273.70
3.84
J1
J2 0.54
0.00
0.0103 15
6.6
5.3
29 0.09
264.30
264.00
269.83
4.17
J2
J3 0.85
0.00
0.0345 15
12.0
9.8
55 0.09
263.90
262.00
269.83
4.57
K1 K2 1.36
0.00
0.0111 15
6.8
5.5
18 0.05
281.00
280.80 286.00 3.64
15-188 STRM-2nd SPSTORM Page 10 of 24

D1-27-17
liqll III
PROJECT NAME
M16 Middle School
DATE
PROJECT NO
15-188
DESIGN PHASE
PRELIM /x /
CONSTR
REVISION
LOCATION
Cary, NC
BY
KAL
RECORD
OTHER
CHECKED BY
(SPECIFY)
n=
9=
h=
1=
0.013
195
22
7.22
HYDRAULIC
PIPE
AREA
(FT)
GRADE LINE
HYDRAULIC
RADIUS
(FT)
SIDESTREAM
SUMMATION
(CFS)
Hf
90° = 0.70
80° = 0.66
He
70'= 0.61
60° = 0.55
HEAD LOSS
He
BEND LOSS
50'= 0.47
40° = 0.38
Hb
K's
30'= 0.28
25° = 0.22
Ht
20'= 0.16
15° = 0.10
BEND
LOSS
K
CONTINUED
FRICTION
SLOPE
(FT/FT)
FRICTION
VELOCITY
(FPS)
FROM TO
H3
H4
H4
1.7671
1.7671
3.1416
0.3750
0.3750
0.5000
3.55
3.84
1 5.42
0.09
0.27
0.43
0.04
0.05
0.03
0.07
0.06
0.07
0.00
0.00
0.13
0.20
0.37
0.66
0.00
0.00
0.70
0.0029
0.0034
0.0016
3.19
3.49
2.87
H5
H5
H6
H6
H7
3.1416
0.5000
9.69
0.25
0.07
0.04
0.00
0.36
0.00
0.0034
4.20
H7
H8
3.1416
0.5000
9.69
0.48
0.07
0.10
0.15
0.80
0.55
0.0037
4.39
H8
H9
4.9087
0.6250
9.69
0.02
0.04
0.10
0.16
0.33
0.55
0.0016
3.34
H9
H10
4.9087
0.6250
9.69
0.25
0.06
0.06
0.00
0.37
0.00
0.0022
3.87
H10
H11
4.9087
0.6250
9.69
0.59
0.08
0.08
0.00
0.75
0.00
0.0030
4.55
H11
H12
4.9087
0.6250
9.69
0.70
0.09
0.11
0.18
1.08
0.55
0.0035
4.93
H12
H13
7.0686
0.7500
10.93
0.09
0.06
0.13
0.26
0.54
0.70
0.0017
3.83
H2O
H21
1.2272
0.3125
0.00
0.01
0.01
0.00
0.00
0.02
0.00
0.0007
1.42
H21
H2
1.2272
0.3125
0.00
0.03
0.01
0.01
0.02
0.08
0.70
0.0011
1.72
H22
H2
1.2272
0.3125
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.0001
0.60
H30
H3
1.2272
0.3125
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.0001
0.56
H40
H4
1.2272
0.3125
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.0000
0.23
H50
H5
1.2272
0.3125
0.00
0.07
0.01
0.00
0.00
0.08
0.00
0.0006
1.28
H60
H6
1.2272
0.3125
0.00
0.05
0.05
0.00
0.00
0.10
0.00
0.0044
3.47
H14
H12
1.2272
0.3125
0.00
0.01
0.00
0.00
0.00
0.01
0.00
0.0004
1.00
J1
J2
1.2272
0.3125
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.0001
044
J2
J3
1.2272
0.3125
0.00
0.01
0.00
0.00
0.00
0.01
0.28
0.0002
0.69
K1
K2
1.2272
0.3125
0.00
0.01
0.00
0.00
0.00
0.01
0.00
0.0004
1.11
15-188 STRM-2nd SPSTORM Page 11 of 24

D1-27-17
liqll
DATE
PROJECT NO
15-188
DESIGN PHASE
PRELIM /x /
CONSTR
REVISION
PROJECT NAME
M16 Middle School
LOCATION
Cary, NC
BY
KAL
RECORD
OTHER
CHECKED BY
(SPECIFY)
n= 0.013
g= 195
h= 22
1= 7.22
HYDRAULIC GRADE LINE - CONTINUED
DESIGN CRITERIA:
1. DESIGN FOR THE 10 YR STORM
2. ASSUME TIME OF CONCENTRATION TO
AN INDIVIDUAL INLET = 5 MIN.
3. INTENSITY = g/(h+T), FOR 10 YR STORM
4. MANNINGS "n" FACTOR= .013
5. RATIONAL METHOD: C=.30 GRASS, C=.95 PAVEMENT
OUTLET
W.S. ELEV
(FT)
INLET W.S. ELEV.
FLOW
CONDITION
CONTROL
HW/D
(< 1.0)
UPSTREAM
INLET
TYPE
COMMENTS
FROM TO
OUTLET
CONTOL
(FT)
INLET
CONTROL
(FT)
USE
(FT)
H3
H4
H4
279.98 280.18 280.39 280.39 INLET 0.80 DI OK
279.16 279.53 279.98 279.98 INLET 0.85 DI OK
H5
H5
H6
276.77 277.42 279.16
279.16
INLET 0.68
CB
OK
H6
H7
275.94 276.30 276.77
276.77
INLET 0.88
DI
OK
H7
H8
274.63 275.43 275.94
275.94
INLET
0.92
CB
OK
H8
H9
274.30 274.63 274.34
274.63
OUTLET
0.81
CB
OK
H9
H10
273.26 273.62 274.30
274.30
INLET
0.76
CB
OK
H10
H11
271.31 272.07 273.26
273.26
INLET
0.86
CB
OK
H11
H12
264.64 265.72 271.31
271.31
INLET
0.93
CB
OK
H12
H13
263.40 263.94 264.64
264.64
INLET
0.71
CB
OK
Tailwater Elev=
263.40
H2O
H21
281.50 281.52
281.71
281.71
INLET
0.57
DI
OK
H21
H2
281.40 281.48
281.50
281.50
INLET
0.60
DI
OK
Tailwater Elev=
281.40
H22
H2
281.80 281.80 281.64
281.80
OUTLET
0.64
DI
OK
Tailwater Elev=
281.80
H30
H3
281.80 281.80 281.64
281.80
OUTLET
0.64
DI
OK
Tailwater Elev=
281.80
H40
H4
281.80 281.80 281.63
281.80
OUTLET
0.64
DI
OK
Tailwater Elev=
281.80
H50
H5
279.16 279.24 280.20
280.20
INLET
0.56
CB
OK
Tailwater Elev=
279.16
H60
H6
278.00 278.10 279.15
279.15
INLET
0.92
CB
OK
Tailwater Elev=
278.00
H14
H12
269.00 269.01 269.17
269.17
INLET
0.53
CB
OK
Tailwater Elev=
269.00
J1
J2
264.55 264.55
264.93
264.93
INLET
0.51
CB
OK
J2
J3
263.40 263.41
264.55
264.55
INLET
0.52
CB
OK
Tailwater Elev=
263.40
K1 K2
281.57 281.59 281.68
281.68
INLET
0.54
DI
OK
15-188 STRM-2nd SPSTORM Page 12 of 24

D1-27-17
PROJECT NAME
M16 Middle School
DATE
DESIGN PHASE
PRELIM /x /
CONSTR
REVISION
PROJECT NO
15-188
LOCATION
Cary, INC
BY
KAL
RECORD
OTHER
CHECKED BY
(SPECIFY)
n= 0.013
9= 195
h= 22
STORM DRAINAGE SCHEDULE CONTINUED
1= 7.22
INLET
AREA
(SF)
INLET
AREA
(AC)
IMPERVIOUS
M
INLET
Cc
RUNOFF
COEFF.
INLET
DISCHARGE
(CFS)
TOTAL
AREAS
(AC)
INLET
TIME
(MIN)
PIPE
TIME
(MIN)
Tc
TIME
OF CONC.
(MIN)
I
INTENSITY
(IN/HR)
Cc
RUNOFF
COEFF.
FROM TO
K2 K3
K3 K4
10,460 0.24 95 0.92 1.59 0.45 5.00 0.05 5.05 7.21 0.92
5,890 0.14 90 0.89 0.86 0.58 5.00 0.18 5.18 7.17 0.91
K4
K5
1,090
0.03
75
0.79
0.14
0.61 5.00
0.34
5.34
7.13
0.90
K5
K6
1,630
0.04
40
0.56
0.15
0.64 5.00
0.59
5.59
7.07
0.88
K6
K7
33,200
0.76
55
0.66
3.62
1.41 5.00
0.81
5.81
7.01
0.76
K7
K8
14,430
0.33
80
0.82
1.96
1.74 5.00
0.98
5.98
6.97
0.77
K8
K9
22,130
0.51
50
0.63
2.29
2.24 5.00
1.08
6.08
6.94
0.74
K9
K10
3,200
0.07
0
0.30
0.16
2.32 5.00
1.21
6.21
6.91
0.73
K10
K11
5,750
0.13
0
0.30
0.29
2.45 5.00
1.32
6.32
6.88
0.70
K30
K3
4,600
0.11
90
0.89
0.67
0.11 5.00
0.00
5.00
7.22
0.89
K40
K4
10,520
0.24
85
0.85
1.49
0.24 5.00
0.00
5.00
7.22
0.85
K70
K71
9,180
0.21
30
0.50
0.75
0.21 5.00
0.00
5.00
7.22
0.50
K71
K72
7,600
0.17
30
0.50
0.62
0.39 5.00
0.69
5.69
7.04
0.50
K72
K73
12,510
0.29
90
0.89
1.84
0.67 5.00
1.00
6.00
6.97
0.66
K73
K7
26,110
0.60
80
0.82
3.55
1.27 5.00
1.19
6.19
6.92
0.74
K74
K73
9,610
0.22
85
0.85
1.36
0.22 5.00
0.00
5.00
7.22
0.85
K80
K81
7,970
0.18
50
0.63
0.83
0.18 5.00
0.00
5.00
7.22
0.63
K81
K82
5,570
0.13
80
0.82
0.76
0.31 5.00
0.25
5.25
7.16
0.71
K82
K8
3,680
0.08
80
0.82
0.50
0.40 5.00
0.38
5.38
7.12
0.73
L1
L2
17,280
0.40
80
0.82
2.35
0.40 5.00
0.00
5.00
7.22
0.82
L2
L3
7,820
0.18
75
0.79
1.02
0.58 5.00
0.14
5.14
7.18
0.81
L3
L4
9,830
0.23
90
0.89
1.44
0.80 5.00
0.37
5.37
7.12
0.83
L4
L5
9,430
0.22
75
0.79
1.23
1.02 5.00
0.65
5.65
7.05
0.82
L5 L6
11,020
0.25
65
0.72
1.32
1.27 5.00
0.68
5.68
7.04 0.80
15-188 STRM-2nd SPSTORM Page 13 of 24

D1-27-17
liqll
PROJECT NAME
M16 Middle School
DATE
PROJECT NO
15-188
DESIGN PHASE
PRELIM /x /
CONSTR
REVISION
RECORD
OTHER
(SPECIFY)
LOCATION
Cary, NC
BY
KAL
CHECKED BY
n= 0.013 STORM DRAINAGE SCHEDULE -CONTINUED
9= 195
h= 22
1= 7.22 Q
FROM TO DISCHARGE
(CFS)
Q
SIDE-
STREAM
(CFS)
SLOPE
DIA.
(IN)
CAPACITY
(FULL)
(CFS)
V FULL
(FPS)
LENGTH
(FT)
SEGMENT
TIME
(MIN)
UPPER
INV.
(FT)
LOWER
INV.
(FT)
UPSTREAM
TOP
ELEV.
(FT)
PIPE
COVER
(FT)
K2
K3
K3 2.95 0.00 0.0100 15 6.5 5.3 40 0.13 280.70 280.30 286.00 3.94
K4 4.47 0.67 0.0113 18 11.2 6.3 62 0.16 280.20 279.50 285.50 3.66
K4
K5 6.07
1.49
0.0101
18
10.6
6.0
89 0.25
279.40
278.50
284.50
3.46
K5
K6 6.19
0.00
0.0255
24
36.1
11.5
149 0.22
278.40
274.60
286.00
5.42
K6
K7 9.67
0.00
0.0105
24
23.2
7.4
76 0.17
274.50
273.70
280.50
3.82
K7
K8 19.35
7.84
0.0326
30
74.0
15.1
89 0.10
273.60
270.70
279.85
3.52
K8
K9 23.58
2.05
0.0213
30
59.8
12.2
94 0.13
270.60
268.60
278.25
4.92
K9
K10 23.68
0.00
0.0891
30
122.4
24.9
174 0.12
268.50
253.00
276.50
5.27
K10
K11 23.90
0.00
0.0313
30
72.5
14.8
32 0.04
252.00
251.00
260.00
5.27
K30
K3 0.67
0.00
0.0375
15
12.5
10.2
16 0.03
281.00
280.40
285.50
3.14
K40
K4 1.49
0.00
0.0101
15
6.5
5.3
69 0.22
280.30
279.60
284.00
2.34
K70
K71 0.75
0.00
0.0085
15
5.9
4.8
201 0.69
280.00
278.30
283.80
2.44
K71
K72 1.34
0.00
0.0103
15
6.6
5.3
97 0.30
278.20
277.20
284.50
4.94
K72
K73 3.10
0.00
0.0220
15
9.6
7.8
91 0.19
277.10
275.10
284.20
5.74
K73
K7 7.84
1.36
0.0112
24
24.0
7.6
107 0.23
275.00
273.80
281.90
4.72
K74
K73 1.36
0.00
0.0382
15
12.6
10.3
34 0.06
276.50
275.20
281.80
3.94
K80
K81 0.83
0.00
0.0108
15
6.7
5.5
83 0.25
281.00
280.10
285.50
3.14
K81
K82 1.57
0.00
0.0189
15
8.9
7.2
53 0.12
280.00
279.00
285.50
4.14
K82
K8 2.05
0.00
0.0204
15
9.2
7.5
157 0.35
275.00
271.80
285.50
9.14
L1
L2 2.35
0.00
0.0106
15
6.7
5.4
47 0.14
279.60
279.10
284.70
3.74
L2
L3 3.35
0.00
0.0107
15
6.7
5.4 E75
0.23
279.00
278.20
285.00
4.64
L3
L4 4.75
0.00
0.0109
18
11.0
6.2
101 0.27
278.10
277.00
285.20
5.46
L4 L5 7.69
1.78
0.0118
24
24.5
7.8
17 0.04
276.90
276.70
284.69
5.61
L5 L6 8.97
0.00
0.0108
24
23.5
7.5
93 0.21
276.60
275.60 284.30 5.52
15-188 STRM-2nd SPSTORM Page 14 of 24

D1-27-17
liqll III
PROJECT NAME
M16 Middle School
DATE
PROJECT NO
15-188
DESIGN PHASE
PRELIM /x /
CONSTR
REVISION
LOCATION
Cary, NC
BY
KAL
RECORD
OTHER
CHECKED BY
(SPECIFY)
n=
9=
h=
1=
0.013
195
22
7.22
HYDRAULIC
PIPE
AREA
(FT)
GRADE LINE
HYDRAULIC
RADIUS
(FT)
SIDESTREAM
SUMMATION
(CFS)
Hf
90° = 0.70
80° = 0.66
He
70'= 0.61
60° = 0.55
HEAD LOSS
He
BEND LOSS
50'= 0.47
40° = 0.38
Hb
K's
30'= 0.28
25° = 0.22
Ht
20'= 0.16
15° = 0.10
BEND
LOSS
K
CONTINUED
FRICTION
SLOPE
(FT/FT)
FRICTION
VELOCITY
(FPS)
FROM TO
K2
K3
K3
1.2272
1.7671
0.3125
0.3750
0.00
0.67
0.08
0.11
0.02
0.02
0.01
0.03
0.01
0.00
0.13
0.17
0.70
0.00
0.0021
0.0018
2.39
2.52
K4
K4
K5
1.7671
0.3750
2.16
0.30
0.05
0.03
0.07
0.44
0.70
0.0033
3.42
K5
K6
3.1416
0.5000
2.16
0.11
0.01
0.06
0.10
0.29
0.55
0.0007
1.96
K6
K7
3.1416
0.5000
2.16
0.14
0.04
0.02
0.00
0.19
0.00
0.0018
3.06
K7
K8
4.9087
0.6250
10.00
0.20
0.06
0.05
0.10
0.41
0.70
0.0022
3.92
K8
K9
4.9087
0.6250
12.05
0.31
0.09
0.08
0.13
0.61
0.55
0.0033
4.77
K9
K10
4.9087
0.6250
12.05
0.57
0.09
0.12
0.19
0.98
0.55
0.0033
4.79
K10
K11
4.9087
0.6250
12.05
0.11
0.09
0.12
0.20
0.52
0.55
0.0034
4.84
K30
K3
1.2272
0.3125
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.0001
0.55
K40
K4
1.2272
0.3125
0.00
0.04
0.01
0.00
0.00
0.04
0.00
0.0005
1.21
K70
K71
1.2272
0.3125
0.00
0.03
0.00
0.00
0.00
0.03
0.00
0.0001
0.61
K71
K72
1.2272
0.3125
0.00
0.04
0.00
0.00
0.00
0.05
0.55
0.0004
1.09
K72
K73
1.2272
0.3125
0.00
0.21
0.02
0.01
0.00
0.24
0.10
0.0023
2.52
K73
K7
3.1416
0.5000
1.36
0.13
0.02
0.03
0.00
0.19
0.00
0.0012
2.48
K74
K73
1.2272
0.3125
0.00
0.01
0.00
0.00
0.00
0.02
0.00
0.0004
1.10
K80
K81
1.2272
0.3125
0.00
0.01
0.00
0.00
0.00
0.02
0.00
0.0002
0.67
K81
K82
1.2272
0.3125
0.00
0.03
0.01
0.00
0.00
0.04
0.00
0.0006
1.27
K82
K8
1.2272
0.3125
0.00
0.16
0.01
0.01
0.01
0.19
0.55
0.0010
1.67
L1
L2
1.2272
0.3125
0.00
0.06
0.01
0.00
0.00
0.08
0.00
0.0013
1.91
L2
L3
1.2272
0.3125
0.00
0.20
0.03
0.02
0.03
0.28
0.55
0.0027
2.72
L3
L4
1.7671
0.3750
0.00
0.21
0.03
0.04
0.01
0.28
0.10
0.0020
2.67
L4
L5
3.1416
0.5000
1.78
0.02
0.02
0.04
0.01
0.09
0.10
0.0011
2.43
L5
L6
3.1416
0.5000
1.78
0.14
0.03
0.03
0.03
0.23
0.28
0.0016
2.84
15-188 STRM-2nd SPSTORM Page 15 of 24

D1-27-17
liqll
DATE
PROJECT NO
15-188
DESIGN PHASE
PRELIM /x /
CONSTR
REVISION
PROJECT NAME
M16 Middle School
LOCATION
Cary, NC
BY
KAL
RECORD
OTHER
CHECKED BY
(SPECIFY)
n= 0.013
g= 195
h= 22
1= 7.22
HYDRAULIC GRADE LINE - CONTINUED
DESIGN CRITERIA:
1. DESIGN FOR THE 10 YR STORM
2. ASSUME TIME OF CONCENTRATION TO
AN INDIVIDUAL INLET = 5 MIN.
3. INTENSITY = g/(h+T), FOR 10 YR STORM
4. MANNINGS "n" FACTOR= .013
5. RATIONAL METHOD: C=.30 GRASS, C=.95 PAVEMENT
OUTLET
W.S. ELEV
(FT)
INLET W.S. ELEV.
FLOW
CONDITION
CONTROL
HW/D
(< 1.0)
UPSTREAM
INLET
TYPE
COMMENTS
FROM TO
OUTLET
CONTOL
(FT)
INLET
CONTROL
(FT)
USE
(FT)
K2
K3
K3
281.23 281.35 281.57 281.57 INLET 0.70 DI OK
280.66 280.83 281.23 281.23 INLET 0.68 DI OK
K4
K4
K5
279.57
280.01
280.66
280.66
INLET 0.84
DI
OK
K5
K6
275.91
276.20
279.57
279.57
INLET 0.58
DI
OK
K6
K7
275.52
275.72
275.91
275.91
INLET
0.70
CB
OK
K7
K8
272.85
273.25
275.52
275.52
INLET
0.77
CB
OK
K8
K9
270.75
271.36
272.85
272.85
INLET
0.90
CB
OK
K9
K10
254.27
255.26
270.75
270.75
INLET
0.90
DI
OK
K10
K11
253.00
253.52
254.27
254.27
INLET
0.91
DI
OK
Tailwater Elev=
253.00
K30
K3
281.40
281.40 281.64
281.64
INLET
0.51
DI
OK
Tailwater Elev=
281.40
K40
K4
280.66
280.70 280.99
280.99
INLET
0.55
DI
OK
Tailwater Elev=
280.66
K70
K71
278.88
278.91
280.64
280.64
INLET
0.51
CB
OK
K71
K72
278.00
278.05
278.88
278.88
INLET
0.54
CB
OK
K72
K73
276.27
276.51
278.00
278.00
INLET
0.72
CB
OK
K73
K7
275.52
275.71
276.27
276.27
INLET
0.63
CB
OK
Tailwater Elev=
275.52
K74
K73
276.27
276.29 277.18
277.18
INLET
0.54
CB
OK
Tailwater Elev=
276.27
K80
K81
280.70
280.71
281.64
281.64
INLET
0.52
DI
OK
K81
K82
279.00
279.04
280.70
280.70
INLET
0.56
DI
OK
K82
K8
272.85
273.04
275.75
275.75
INLET
0.60
DI
OK
Tailwater Elev=
272.85
L1
L2
279.95
280.02
280.38
280.38
INLET
0.63
CB
OK
L2
L3
279.16
279.44
279.95
279.95
INLET
0.76
DI
OK
L3
L4
278.16
278.44
279.16
279.16
INLET
0.71
CB
OK
L4 L5
277.95
278.04
278.16
278.16
INLET
0.63
CB
OK
L5 L6
277.09
277.32
277.95
277.95
INLET
0.68
CB
OK
15-188 STRM-2nd SPSTORM Page 16 of 24

D1-27-17
PROJECT NAME
M16 Middle School
DATE
DESIGN PHASE
PRELIM /x /
CONSTR
REVISION
PROJECT NO
15-188
LOCATION
Cary, INC
BY
KAL
RECORD
OTHER
CHECKED BY
(SPECIFY)
n= 0.013
9= 195
h= 22
STORM DRAINAGE SCHEDULE CONTINUED
1= 7.22
INLET
AREA
(SF)
INLET
AREA
(AC)
IMPERVIOUS
M
INLET
Cc
RUNOFF
COEFF.
INLET
DISCHARGE
(CFS)
TOTAL
AREAS
(AC)
INLET
TIME
(MIN)
PIPE
TIME
(MIN)
Tc
TIME
OF CONC.
(MIN)
I
INTENSITY
(IN/HR)
Cc
RUNOFF
COEFF.
FROM TO
L6 L7
L7 L8
8,650 0.20 90 0.89 1.27 1.47 5.00 0.89 5.89 6.99 0.81
10,800 0.25 75 0.79 1.41 1.72 5.00 1.32 6.32 6.88 0.81
9,130 0.21 50 0.63 0.95 1.93 5.00 1.42 6.42 6.86 0.79
L8
L9
L9
L10
18,140
0.42
95
0.92
2.76
2.34 5.00
1.47
6.47
6.85
0.81
L10
11-11
21,930
0.50
75
0.79
2.86
2.85 5.00
1.53
6.53
6.84
0.81
L40
L4
11,720
0.27
95
0.92
1.78
0.27 5.00
0.00
5.00
7.22
0.92
L60
L6
9,910
0.23
90
0.89
1.45
0.23 5.00
0.00
5.00
7.22
0.89
L80
L8
15,790
0.36
85
0.85
2.23
0.36 5.00
0.00
5.00
7.22
0.85
L90
L9
8,430
0.19
90
0.89
1.24
0.19 5.00
0.00
5.00
7.22
0.89
M1
M2
39,920
0.92
30
0.50
3.28
0.92 5.00
0.00
5.00
7.22
0.50
M2
M3
38,760
0.89
30
0.50
3.18
1.81 5.00
0.36
5.36
7.13
0.50
N1
N2
5,080
0.12
90
0.89
0.75
0.12 5.00
0.00
5.00
7.22
0.89
N2
N3
7,310
0.17
10
0.37
0.44
0.28 5.00
0.18
5.18
7.17
0.58
N3
N4
6,650
0.15
30
0.50
0.55
0.44 5.00
0.49
5.49
7.09
0.55
N4
N5
11,110
0.26
5
0.33
0.61
0.69 5.00
0.64
5.64
7.06
0.47
N5
N6
7,570
0.17
20
0.43
0.54
0.87 5.00
0.91
5.91
6.99
0.46
N6
N7
17,940
0.41
5
0.33
0.99
1.28 5.00
1.07
6.07
6.95
0.42
N7
N8
13,700
0.31
15
0.40
0.90
1.59 5.00
1.34
6.34
6.88
0.42
N8
N9
39,540
0.91
30
0.50
3.25
2.50 5.00
1.49
6.49
6.84
0.44
N9
N10
28,680
0.66
30
0.50
2.35
3.16 5.00
1.96
6.96
6.73
0.45
N20
N2
3,060
0.07
5
0.33
0.17
0.07 5.00
0.00
5.00
7.22
0.33
N40 N4
24,010
0.55
90
0.89
3.52
0.55 5.00
0.00
5.00
7.22 0.89
15-188 STRM-2nd SPSTORM Page 17 of 24

D1-27-17
liqll
PROJECT NAME
M16 Middle School
DATE
PROJECT NO
15-188
DESIGN PHASE
PRELIM /x /
CONSTR
REVISION
RECORD
OTHER
(SPECIFY)
LOCATION
Cary, NC
BY
KAL
CHECKED BY
n= 0.013 STORM DRAINAGE SCHEDULE -CONTINUED
9= 195
h= 22
1= 7.22 Q
FROM TO DISCHARGE
(CFS)
Q
SIDE-
STREAM
(CFS)
SLOPE
DIA.
(IN)
CAPACITY
(FULL)
(CFS)
V FULL
(FPS)
LENGTH
(FT)
SEGMENT
TIME
(MIN)
UPPER
INV.
(FT)
LOWER
INV.
(FT)
UPSTREAM
TOP
ELEV.
(FT)
PIPE
COVER
(FT)
L6
L7
L7 11.59 1.45 0.0101 24 22.7 7.2 188 0.43 275.50 273.60 285.02 7.34
L8 12.81 0.00 0.0111 24 23.8 7.6 45 0.10 273.50 273.00 282.52 6.84
L9 15.91 1 2.23 0.0115 30 44.1 9.0 26 0.05 272.90 272.60 282.50 6.87
L8
L9
L10 19.74
1.24
0.0540
30
95.3
19.4
63
0.05
272.50
269.10
282.00
6.77
L10
L11 22.43
0.00
0.0286
30
69.3
14.1
140
0.17
269.00
265.00
282.00
10.27
L40
L4 1.78
0.00
0.0233
15
9.9
8.0
30
0.06
280.20
279.50
285.35
3.79
L60
L6 1.45
0.00
0.0133
15
7.5
6.1
45
0.12
280.40
279.80
285.50
3.74
L80
L8 2.23
0.00
0.0149
15
7.9
6.4
67
0.17
277.50
276.50
282.80
3.94
L90
L9 1.24
0.00
0.0169
15
8.4
6.8
130
0.32
278.20
276.00
283.40
3.84
M1
M2 3.28
0.00
0.0233
15
9.9
8.0
172
0.36
279.00
275.00
284.30
3.94
M2
M3 6.37
0.00
0.0811
18
29.9
16.9
122
0.12
274.90
265.00
284.30
7.76
N1
N2 0.75
0.00
0.0136
15
7.5
6.1
66
0.18
281.20
280.30
286.35
3.79
N2
N3 1.35
0.17
0.0102
15
6.5
5.3
98
0.31
280.20
279.20
284.00
2.44
N3
N4 1.87
0.00
0.0104
15
6.6
5.4
48
0.15
279.10
278.60
284.00
3.54
N4
N5 5.98
3.52
0.0108
18
10.9
6.2
102
0.28
278.50
277.40
284.00
3.86
N5
N6 6.48
0.00
0.0105
18
10.8
6.1
57
0.16
277.30
276.70
284.00
5.06
N6
N7 7.42
0.00
0.0101
24
22.7
7.2
119
0.27
276.60
275.40
284.00
5.22
N7
N8 8.24
0.00
0.0104
24
23.1
7.4
67
0.15
275.30
274.60
284.50
7.02
N8
N9 11.58
0.29
0.0100
24
22.6
7.2
200
0.46
274.50
272.50
284.30
7.62
N9
N10 13.65
0.00
0.0451
24
48.1
15.3
164
0.18
272.40
265.00
284.30
9.72
N20
N2 0.17
0.00
0.0103
15
6.5
5.3
78
0.24
281.10
280.30
284.50
2.04
N40 N4 3.52
0.00
0.0336
15
11.8
9.6
119
0.21
283.50
279.50 289.00 4.14
15-188 STRM-2nd SPSTORM Page 18 of 24

D1-27-17
liqll III
PROJECT NAME
M16 Middle School
DATE
PROJECT NO
15-188
DESIGN PHASE
PRELIM /x /
CONSTR
REVISION
LOCATION
Cary, NC
BY
KAL
RECORD
OTHER
CHECKED BY
(SPECIFY)
n=
9=
h=
1=
0.013
195
22
7.22
HYDRAULIC
PIPE
AREA
(FT)
GRADE LINE
HYDRAULIC
RADIUS
(FT)
SIDESTREAM
SUMMATION
(CFS)
Hf
90° = 0.70
80° = 0.66
He
70'= 0.61
60° = 0.55
HEAD LOSS
He
BEND LOSS
50'= 0.47
40° = 0.38
Hb
K's
30'= 0.28
25° = 0.22
Ht
20'= 0.16
15° = 0.10
BEND
LOSS
K
CONTINUED
FRICTION
SLOPE
(FT/FT)
FRICTION
VELOCITY
(FPS)
FROM TO
L6
L7
L7
3.1416
3.1416
4.9087
0.5000
0.5000
0.6250
3.24
3.24
1 5.47
0.49
0.14
0.04
0.05
0.06
0.04
0.04
0.07
0.09
0.04
0.06
0.14
0.62
0.34
0.31
0.28
0.28
0.55
0.0026
0.0032
0.0015
3.67
4.06
3.22
L8
11-8
L9
L9
L10
4.9087
0.6250
6.71
0.14
0.06
0.06
0.02
0.28
0.10
0.0023
4.00
L10
11-11
4.9087
0.6250
6.71
0.41
0.08
0.09
0.07
0.65
0.28
0.0030
4.54
L40
L4
1.2272
0.3125
0.00
0.02
0.01
0.00
0.00
0.03
0.00
0.0008
1.45
L60
L6
1.2272
0.3125
0.00
0.02
0.01
0.00
0.00
0.03
0.00
0.0005
1.18
L80
L8
1.2272
0.3125
0.00
0.08
0.01
0.00
0.00
0.09
0.00
0.0012
1.81
L90
L9
1.2272
0.3125
0.00
0.05
0.00
0.00
0.00
0.05
0.00
0.0004
1.00
M1
M2
1.2272
0.3125
0.00
0.44
0.03
0.00
0.00
0.47
0.00
0.0026
2.66
M2
M3
1.7671
0.3750
0.00
0.45
0.05
0.04
0.01
0.55
0.10
0.0037
3.59
N1
N2
1.2272
0.3125
0.00
0.01
0.00
0.00
0.00
0.01
0.00
0.0001
0.61
N2
N3
1.2272
0.3125
0.17
0.04
0.00
0.00
0.00
0.05
0.10
0.0004
1.09
N3
N4
1.2272
0.3125
0.17
0.04
0.01
0.01
0.01
0.07
0.55
0.0008
1.52
N4
N5
1.7671
0.3750
3.69
0.33
0.04
0.01
0.02
0.41
0.55
0.0032
3.37
N5
N6
1.7671
0.3750
3.69
0.22
0.05
0.06
0.02
0.35
0.10
0.0038
3.65
N6
N7
3.1416
0.5000
3.69
0.13
0.02
0.07
0.02
0.24
0.10
0.0011
2.35
N7
N8
3.1416
0.5000
3.69
0.09
0.03
0.03
0.06
0.20
0.70
0.0013
2.61
N8
N9
3.1416
0.5000
3.98
0.52
0.05
0.04
0.01
0.62
0.10
0.0026
3.67
N9
N10
3.1416
0.5000
3.98
0.59
0.07
0.07
0.06
0.80
0.28
0.0036
4.32
N20
N2
1.2272
0.3125
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.0000
L::0::14:::::
N40
N4
1.2272
0.3125
0.00
0.35
0.03
0.00
0.00
0.38
0.00
0.0030
2.86
15-188 STRM-2nd SPSTORM Page 19 of 24

D1-27-17
liqll
DATE
PROJECT NO
15-188
DESIGN PHASE
PRELIM /x /
CONSTR
REVISION
PROJECT NAME
M16 Middle School
LOCATION
Cary, NC
BY
KAL
RECORD
OTHER
CHECKED BY
(SPECIFY)
n= 0.013
g= 195
h= 22
1= 7.22
HYDRAULIC GRADE LINE - CONTINUED
DESIGN CRITERIA:
1. DESIGN FOR THE 10 YR STORM
2. ASSUME TIME OF CONCENTRATION TO
AN INDIVIDUAL INLET = 5 MIN.
3. INTENSITY = g/(h+T), FOR 10 YR STORM
4. MANNINGS "n" FACTOR= .013
5. RATIONAL METHOD: C=.30 GRASS, C=.95 PAVEMENT
OUTLET
W.S. ELEV
(FT)
INLET W.S. ELEV.
FLOW
CONDITION
CONTROL
HW/D
(< 1.0)
UPSTREAM
INLET
TYPE
COMMENTS
FROM TO
OUTLET
CONTOL
(FT)
INLET
CONTROL
(FT)
USE
(FT)
L6
L7
L7
275.22 275.84 277.09 277.09 INLET 0.79 CB OK
274.76 275.10 275.22 275.22 INLET 0.86 CB OK
274.45 274.76 274.60 274.76 OUTLET 0.74 CB OK
L8
L8
L9
L9
L10
271.15
271.43
274.45
274.45
INLET
0.78
CB
OK
L10
L11
267.00
267.65
271.15
271.15
INLET
0.86
CB
OK
Tailwater Elev=
267.00
L40
L4
280.50
280.53 280.92
280.92
INLET
0.57
CB
OK
Tailwater Elev=
280.50
L60
L6
280.80
280.83 281.09
281.09
INLET
0.55
DI
OK
Tailwater Elev=
280.80
L80
L8
277.50
277.59 278.27
278.27
INLET
0.61
DI
OK
Tailwater Elev=
277.50
L90
L9
277.00
277.05 278.87
278.87
INLET
0.54
CB
OK
Tailwater Elev=
277.00
M1
M2
276.21
276.68
279.93
279.93
INLET
0.75
DI
OK
M2
M3
267.00
267.55
276.21
276.21
INLET
0.87
DI
OK
Tailwater Elev=
267.00
N1
N2
280.88
280.89
281.84
281.84
INLET
0.51
CB
OK
N2
N3
279.83
279.88
280.88
280.88
INLET
0.54
DI
OK
N3
N4
279.74
279.81
279.83
279.83
INLET
0.58
DI
OK
N4
N5
278.63
279.04
279.74
279.74
INLET
0.83
DI
OK
N5
N6
277.84
278.19
278.63
278.63
INLET
0.89
DI
OK
N6
N7
276.60
276.84
277.84
277.84
INLET
0.62
DI
OK
N7
N8
276.09
276.29
276.60
276.60
INLET
0.65
DI
OK
N8
N9
274.21
274.83
276.09
276.09
INLET
0.79
DI
OK
N9
N10
267.00
267.80
274.21
274.21
INLET
0.91
DI
OK
Tailwater Elev=
267.00
N20
N2
281.30
281.30 281.73
281.73
INLET
0.50
DI
OK
Tailwater Elev=
281.30
N40 N4
280.50
280.88 284.48
284.48
INLET
0.78
CB
OK
15-188 STRM-2nd SPSTORM Page 20 of 24

D1-27-17
liqll
0
DATE
PROJECT NO
15-188
DESIGN PHASE
PRELIM
CONSTR
REVISION
RECORD
OTHER
/X /
PROJECT NAME
M16 Middle School
LOCATION
Cary, NC
BY
KAL
CHECKED BY
(SPECIFY)
n=
9=
h=
0.013
195
22
STORM DRAINAGE SCHEDULE
CONTINUED
1=
7.22
INLET
AREA
(SF)
INLET
AREA
(AC)
IMPERVIOUS
N
INLET
Cc
RUNOFF
COEFF.
INLET
DISCHARGE
(CFS)
TOTAL
AREAS
(AC)
INLET
TIME
(MIN)
PIPE
TIME
(MIN)
Tc
TIME
OF CONC.
(MIN)
I
INTENSITY
(IN/HR)
Cc
RUNOFF
COEFF.
FROM TO
N80
5,730 0.13
19,960 0.46
0
0
0.30
0.30
0.29
0.99
0.13
0.46
5.00
5.00
0.00
0.00
5.00
5.00
7.22
7.22
0.30
0.30
N8
Q1
Q2
15-188 STRM-2nd SPSTORM Page 21 of 24

D1-27-17
liqll
DATE
DESIGN PHASE
PRELIM
CONSTR
REVISION
RECORD
OTHER
(SPECIFY)
/X /
PROJECT NAME
M16 Middle School
PROJECT NO
15-188
LOCATION
Cary, NC
BY
KAL
CHECKED BY
n=
9=
h=
0.013
195
22
STORM DRAINAGE SCHEDULE - CONTINUED
1=
7.22
Q
DISCHARGE
(CFS)
Q
SIDE-
STREAM
(CFS)
SLOPE
DIA.
(IN)
CAPACITY
(FULL)
(CFS)
V FULL
(FPS)
LENGTH
(FT)
SEGMENT
TIME
(MIN)
UPPER
INV.
(FT)
LOWER
INV.
(FT)
UPSTREAM
TOP
ELEV.
(FT)
PIPE
COVER
(FT)
FROM TO
N80
0.29 0.00
0.99 0.00
0.0113
0.0667
15
15
6.9
16.7
5.6
13.6
62
93
0.18
0.11
281.00
292.10
280.30
285.90
284.50
296.00
2.14
2.54
N8
01 Q2
15-188 STRM-2nd SPSTORM Page 22 of 24

D
liqll
DATE
1-27-17
PROJECT NO
15-188
DESIGN PHASE
PRELIM /X /
CONSTR
REVISION
RECORD
OTHER
PROJECT NAME
M16 Middle School
LOCATION
Cary, NC
BY
KAL
CHECKED BY
(SPECIFY)
n=
9=
h=
I=
0.013
195
22
7.22
HYDRAULIC GRADE LINE
PIPE HYDRAULIC
AREA RADIUS
(FT) (FT)
SIDESTREAM
SUMMATION
(CFS)
Hf
90° = 0.70
80° = 0.66
He
70° = 0.61
60° = 0.55
HEAD LOSS
He
BEND LOSS
50° = 0.47
40° = 0.38
Hb
K's
30° = 0.28
25'= 0.22
Ht
20'= 0.16
15'= 0.10
BEND
LOSS
K
CONTINUED
FRICTION
SLOPE
(FT/FT)
FRICTION
VELOCITY
(FPS)
FROM TO
N80
1.2272 0.3125
1.2272 0.3125
0.00
0.00
0.00
0.02
0.00
0.00
0.00
0.00
0.00
0.00
0.00
0.02
0.00
0.00
0.0000
0.0002
0.23
0.81
N8
01 02
15-188 STRM-2nd SPSTORM Page 23 of 24

D1-27-17
" T 1A 1!!1;;11 11!!
1111 illi jl11111;;j1 111
" '
" '
DATE
DESIGN PHASE
PRELIM
CONSTR
REVISION
RECORD
OTHER
/X /
PROJECT NAME
M16 Middle School
PROJECT NO
15-188
LOCATION
Cary, NC
BY
KAL
CHECKED BY
(SPECIFY)
n=
g=
h=
1=
0.013
195
22
7.22
HYDRAULIC GRADE LINE - CONTINUED
DESIGN CRITERIA:
1. DESIGN FOR THE 10 YR STORM
2. ASSUME TIME OF CONCENTRATION TO
AN INDIVIDUAL INLET = 5 MIN.
3. INTENSITY = g/(h+T), FOR 10 YR STORM
4. MANNINGS "n" FACTOR= .013
5. RATIONAL METHOD: C=.30 GRASS, C=.95 PAVEMENT
OUTLET
W.S. ELEV
(FT)
INLET W.S. ELEV.
FLOW
CONDITION
CONTROL
HW/D
(< 1.0)
UPSTREAM
INLET
TYPE
COMMENTS
FROM TO
OUTLET
CONTOL
(FT)
INLET
CONTROL
(FT)
USE
(FT)
N80
Tailwater Elev= 280.50
281.30 281.30 281.63 281.63 INLET 0.50 DI OK
Tailwater Elev= 281.30
286.90 286.92 292.75 292.75 INLET 0.52 FES OK
Tailwater Elev= 286.90
N8
Q1
Q2
15-188 STRM-2nd SPSTORM Page 24 of 24

Culvert Design

Culvert Report
Hydraflow Express Extension for Autodesk® AutoCAD® Civil 3D® by Autodesk, Inc. Thursday, Feb 9 2017
P1 CULVERT AT PUBLIC STREET W FOR M16 10 YEAR STORM
Invert Elev Dn (ft)
= 263.50
Calculations
Pipe Length (ft)
= 88.00
Qmin (cfs)
= 128.27
Slope (%)
= 1.36
Qmax (cfs)
= 128.27
Invert Elev Up (ft)
= 264.70
Tailwater Elev (ft)
= (dc+D)/2
Rise (in)
= 60.0
Shape
= Box
Highlighted
Span (in)
= 72.0
Qtotal (cfs)
= 128.27
No. Barrels
= 2
Qpipe (cfs)
= 128.27
n -Value
= 0.012
Qovertop (cfs)
= 0.00
Culvert Type
= Flared Wingwalls
Veloc Dn (ft/s)
= 3.28
Culvert Entrance
= 90D and 15D wingwall flares
Veloc Up (ft/s)
= 7.01
Coeff. K,M,c,Y,k
= 0.061, 0.75, 0.04, 0.8, 0.5
HGL Dn (ft)
= 266.76
HGL Up (ft)
= 266.23
Embankment
Hw Elev (ft)
= 267.25
Top Elevation (ft)
= 274.50
Hw/D (ft)
= 0.51
Top Width (ft)
= 48.00
Flow Regime
= Inlet Control
Crest Width (ft)
= 88.00
Eley (ft}
275.09
273 OD
271.OD
269.00
267.00
265.00
263.00
261.0D
0
P7 CULVERT AT PUBLIC STREET 'A' FOR M16 10 YEAR STORM
H. Depth (ft)
10.30
930
6.30
4.30
10 20 30 40 50 60 70 SG 9-1 11-11 110 120
Boz Culvert HGL Embank
2.30
0.30
-1.70
3.70
130
R (it)

Culvert Report
Hydraflow Express Extension for Autodesk® AutoCAD® Civil 3D® by Autodesk, Inc.
Thursday, Feb 9 2017
P1 CULVERT AT PUBLIC STREET W FOR M16
25 YEAR STORM
Invert Elev Dn (ft)
= 263.50
Calculations
Pipe Length (ft)
= 88.00
Qmin (cfs)
= 298.50
Slope (%)
= 1.36
Qmax (cfs)
= 298.50
Invert Elev Up (ft)
= 264.70
Tailwater Elev (ft)
= (dc+D)/2
Rise (in)
= 60.0
Shape
= Box
Highlighted
Span (in)
= 72.0
Qtotal (cfs)
= 298.50
No. Barrels
= 2
Qpipe (cfs)
= 298.50
n -Value
= 0.013
Qovertop (cfs)
= 0.00
Culvert Type
= Flared Wingwalls
Veloc Dn (ft/s)
= 6.48
Culvert Entrance
= 90D and 15D wingwall flares
Veloc Up (ft/s)
= 9.29
Coeff. K,M,c,Y,k
= 0.061, 0.75, 0.04, 0.8, 0.5
HGL Dn (ft)
= 267.34
HGL Up (ft)
= 267.38
Embankment
Hw Elev (ft)
= 269.24
Top Elevation (ft)
= 274.00
Hw/D (ft)
= 0.91
Top Width (ft)
= 48.00
Flow Regime
= Inlet Control
Crest Width (ft)
= 88.00
Eley (ft}
275.OD
273 OD
271.OD
269.00
267.00
265.00
263.OD
261.OD
0
P7 CULVERT AT PUBLIC STREET 'A' FOR M1625 YEAR STORM
H. Depth (ft)
10.31)
930
6.30
4.30
10 20 30 40 50 60 70 SO 90 100 110 120
Boz Culvert HGL Embank
2.30
0.30
-1.70
3.70
130
R (it)

Culvert Report
Hydraflow Express Extension for Autodesk® AutoCAD® Civil 3D® by Autodesk, Inc.
Thursday, Feb 9 2017
P1 CULVERT AT PUBLIC STREET W FOR M16
100 YEAR STORM
Invert Elev Dn (ft)
= 263.50
Calculations
Pipe Length (ft)
= 88.00
Qmin (cfs)
= 353.24
Slope (%)
= 1.36
Qmax (cfs)
= 353.24
Invert Elev Up (ft)
= 264.70
Tailwater Elev (ft)
= (dc+D)/2
Rise (in)
= 60.0
Shape
= Box
Highlighted
Span (in)
= 60.0
Qtotal (cfs)
= 353.24
No. Barrels
= 2
Qpipe (cfs)
= 353.24
n -Value
= 0.012
Qovertop (cfs)
= 0.00
Culvert Type
= Flared Wingwalls
Veloc Dn (ft/s)
= 8.43
Culvert Entrance
= 90D and 15D wingwall flares
Veloc Up (ft/s)
= 10.45
Coeff. K,M,c,Y,k
= 0.061, 0.75, 0.04, 0.8, 0.5
HGL Dn (ft)
= 267.69
HGL Up (ft)
= 268.08
Embankment
Hw Elev (ft)
= 270.66
Top Elevation (ft)
= 274.00
Hw/D (ft)
= 1.19
Top Width (ft)
= 48.00
Flow Regime
= Inlet Control
Crest Width (ft)
= 88.00
Eley (ft}
275.OD
273 OD
271.OD
269.00
267.00
265.00
263.OD
261.OD
0
P7 CULVERT AT PUBLIC STREET W FOR M16 100 YEAR STORM
H. Depth (ft)
10.31)
930
6.30
4.30
10 20 30 40 50 60 70 SO 90 100 110 120
Boz Culvert HGL Embank
2.30
0.30
-1.79
3,70
130
R (it)

Outlet Protection

DATE
DESIGN PHASE
PRELIM
CONSTR
/ Xle
1-27-17
rPROJEC NAME
PROJECT NO
School
15-188
REVISIONN
RECORD
BY
Cary, NC
KAL
OTHER
(SPECIFY)
CHECKED BY
Storm Outlet Structure
FES No.= P1 Box Culvert (2) 5'Hx6'W
Q10/Qfull =
0.30
Pipe Dia= 94 in
V/Vfull =
0.87
Q10 = 64.13 cfs (1.25 D for Multiple)
V =
6.3
fps
Qfull = 217.25 cfs
Vfull = 7.20 fps
From Fig. 8.06.b.1: Zone
=
1
From Fig. 8.06.b.2: D50
=
4
in
DMAx
=
6
in
Riprap Class
=
A
s Apron Thickness
=
12
in
Elm 3 Apron Length
=
31
ft
Apron Width = 3xDia
Length
=
24
ft
Storm Outlet Structure
FES No.= A9
Q10/Qfull =
0.67
Pipe Dia= 36 in
V/Vfull =
1.07
Q10 = 40.98 cfs
V =
9.3
fps
Qfull = 61.50 cfs
Vfull = 8.70 fps
From Fig. 8.06.b.1: Zone
=
3
From Fig. 8.06.b.2: D50
=
10
in
DMAX
=
17
in
Riprap Class
=
1
s Apron Thickness
=
24
in
Apron Length
=
24
ft
Apron Width = 3xDia
Length
=
9
ft

PROJECT NAME
M16 Middle School
LOCATION
Cary, NC
Storm Outlet Structure
FES No.= B5
Pipe Dia= 24
in
Q10 = 5.60
cfs
Qfull = 19.40
cfs
Vfull = 6.20
fps
From Fig. 8.06.b.1:
From Fig. 8.06.b.2:
Storm Outlet Structure
FES No.= C4
Pipe Dia= 18
in
Q10 = 5.40
cfs
Qfull = 24.30
cfs
Vfull = 13.70
fps
From Fig. 8.06.b.1:
From Fig. 8.06.b.2:
Zone
D50
DMAX
Riprap Class
Apron Thickness
Apron Length
Apron Width = 3xDia
Zone
D50
DMAX
Riprap Class
Apron Thickness
Apron Length
Apron Width = 3xDia
DATE
1-27-17
PROJECT NO
15-188
BY
KAL
CHECKED BY
Q10/Qfull =
V/Vfull =
V=
Q10/Qfull =
V/Vfull =
V=
DESIGN PHASE
PRELIM
CONSTR
REVISION
RECORD
OTHER
(SPECIFY)
0.29
0.85
5.3 fps
P
8 in
12 in
B
18 in
12 ft
6 ft
0.22
0.78
10.7 fps
F,
8 in
12 in
B
18 in
9 ft
5 ft

PROJECT NAME
M16 Middle School
LOCATION
Cary, NC
Storm Outlet Structure
FES No.= D9
Pipe Dia= 30
in
Q10 = 15.80
cfs
Qfull = 46.60
cfs
Vfull = 9.50
fps
From Fig. 8.06.b.1:
From Fig. 8.06.b.2:
Storm Outlet Structure
FES No.= E5
Pipe Dia= 15
in
Q10 = 4.12
cfs
Qfull = 4.60
cfs
Vfull = 3.70
fps
From Fig. 8.06.b.1:
From Fig. 8.06.b.2:
Zone
D50
DMAX
Riprap Class
Apron Thickness
Apron Length
Apron Width = 3xDia
Zone
D50
DMAX
Riprap Class
Apron Thickness
Apron Length
Apron Width = 3xDia
DATE
1-27-17
PROJECT NO
15-188
BY
KAL
CHECKED BY
Q10/Qfull =
V/Vfull =
V=
Q10/Qfull =
V/Vfull =
V=
DESIGN PHASE
PRELIM
CONSTR
REVISION
RECORD
OTHER
(SPECIFY)
0.34
0.89
8.5 fps
i
10 in
15 in
1
22.5 in
20 ft
8 ft
0.90
1.13
4.2 fps
1
4 in
6 in
A
9 in
5 ft
4 ft

PROJECT NAME
M16 Middle School
LOCATION
Cary, NC
Storm Outlet Structure
FES No.= F5
Pipe Dia= 24
in
Q10 = 2.09
cfs
Qfull = 16.60
cfs
Vfull = 5.30
fps
From Fig. 8.06.b.1:
From Fig. 8.06.b.2:
Storm Outlet Structure
FES No.= G5
Pipe Dia= 30
in
Q10 = 7.66
cfs
Qfull = 29.80
cfs
Vfull = 6.10
fps
From Fig. 8.06.b.1:
From Fig. 8.06.b.2:
Zone
D50
DMAX
Riprap Class
Apron Thickness
Apron Length
Apron Width = 3xDia
Zone
D50
DMAX
Riprap Class
Apron Thickness
Apron Length
Apron Width = 3xDia
DATE
1-27-17
PROJECT NO
15-188
BY
KAL
CHECKED BY
Q10/Qfull =
V/Vfull =
V=
Q10/Qfull =
V/Vfull =
V=
DESIGN PHASE
PRELIM
CONSTR
REVISION
RECORD
OTHER
(SPECIFY)
0.13
0.68
3.6 fps
1
4 in
6 in
A
9 in
8 ft
6 ft
0.26
0.83
5.1 fps
r.
8 in
12 in
B
18 in
15 ft
8 ft

PROJECT NAME
M16 Middle School
LOCATION
Cary, NC
Storm Outlet Structure
FES No.= H13
Pipe Dia= 36
in
Q10 = 27.27
cfs
Qfull = 111.20
cfs
Vfull = 15.70
fps
From Fig. 8.06.b.1:
From Fig. 8.06.b.2:
Storm Outlet Structure
FES No.= J3
Pipe Dia= 15
in
Q10 = 0.85
cfs
Qfull = 12.00
cfs
Vfull = 9.80
fps
From Fig. 8.06.b.1:
From Fig. 8.06.b.2:
Zone
D50
DMAX
Riprap Class
Apron Thickness
Apron Length
Apron Width = 3xDia
Zone
D50
DMAX
Riprap Class
Apron Thickness
Apron Length
Apron Width = 3xDia
DATE
1-27-17
PROJECT NO
15-188
BY
KAL
CHECKED BY
Q10/Qfull =
V/Vfull =
V=
Q10/Qfull =
V/Vfull =
V=
DESIGN PHASE
PRELIM
CONSTR
REVISION
RECORD
OTHER
(SPECIFY)
0.25
0.83
13.0 fps
i
10 in
15 in
1
22.5 in
24 ft
9 ft
0.07
0.52
5.1 fps
r.
8 in
12 in
B
18 in
8 ft
4 ft

PROJECT NAME
M16 Middle School
LOCATION
Cary, NC
Storm Outlet Structure
FES No.= K11
Pipe Dia= 30
in
Q10 = 23.90
cfs
Qfull = 72.50
cfs
Vfull = 14.80
fps
From Fig. 8.06.b.1:
From Fig. 8.06.b.2:
Storm Outlet Structure
FES No.= L11
Pipe Dia= 30
in
Q10 = 22.43
cfs
Qfull = 69.30
cfs
Vfull = 14.10
fps
From Fig. 8.06.b.1:
From Fig. 8.06.b.2:
Zone
D50
DMAX
Riprap Class
Apron Thickness
Apron Length
Apron Width = 3xDia
Zone
D50
DMAX
Riprap Class
Apron Thickness
Apron Length
Apron Width = 3xDia
DATE
1-27-17
PROJECT NO
15-188
BY
KAL
CHECKED BY
Q10/Qfull =
V/Vfull =
V=
Q10/Qfull =
V/Vfull =
V=
DESIGN PHASE
PRELIM
CONSTR
REVISION
RECORD
OTHER
(SPECIFY)
0.33
0.89
13.2 fps
i
10 in
15 in
1
22.5 in
20 ft
8 ft
0.32
0.87
12.3 fps
10 in
15 in
1
22.5 in
20 ft
8 ft

PROJECT NAME
M16 Middle School
LOCATION
Cary, NC
Storm Outlet Structure
FES No.= M3
Pipe Dia= 18
in
Q10 = 6.37
cfs
Qfull = 29.80
cfs
Vfull = 16.90
fps
From Fig. 8.06.b.1:
From Fig. 8.06.b.2:
Storm Outlet Structure
FES No.= N10
Pipe Dia= 24
in
Q10 = 13.65
cfs
Qfull = 48.10
cfs
Vfull = 15.30
fps
From Fig. 8.06.b.1:
From Fig. 8.06.b.2:
Zone
D50
DMAX
Riprap Class
Apron Thickness
Apron Length
Apron Width = 3xDia
Zone
D50
DMAX
Riprap Class
Apron Thickness
Apron Length
Apron Width = 3xDia
DATE
1-27-17
PROJECT NO
15-188
BY
KAL
CHECKED BY
Q10/Qfull =
V/Vfull =
V=
Q10/Qfull =
V/Vfull =
V=
DESIGN PHASE
PRELIM
CONSTR
REVISION
RECORD
OTHER
(SPECIFY)
0.21
0.78
13.2 fps
i
10 in
15 in
1
22.5 in
12 ft
5 ft
0.28
0.85
13.1 fps
10 in
15 in
1
22.5 in
16 ft
6 ft

PROJECT NAME
M16 Middle School
LOCATION
Cary, NC
Storm Outlet Structure
FES No.= Q2
B @ E.S.
Pipe Dia= 15
in
Q10 = 1.01
cfs
Qfull = 17.10
cfs
Vfull = 13.90
fps
From Fig. 8.06.b.1:
From Fig. 8.06.b.2:
Storm Outlet Structure
FES No.= BMP
B @ E.S.
Pipe Dia= 30
in
Q10 = 4.68
cfs
Qfull = 71.40
cfs
Vfull = 14.50
fps
From Fig. 8.06.b.1:
From Fig. 8.06.b.2:
Zone
D50
DMAX
Riprap Class
Apron Thickness
Apron Length
Apron Width = 3xDia
Zone
D50
DMAX
Riprap Class
Apron Thickness
Apron Length
Apron Width = 3xDia
DATE
1-27-17
PROJECT NO
15-188
BY
KAL
CHECKED BY
Q10/Qfull =
V/Vfull =
V=
Q10/Qfull =
V/Vfull =
V=
DESIGN PHASE
PRELIM
CONSTR
REVISION
RECORD
OTHER
(SPECIFY)
0.06
0.52
7.3 fps
P
8 in
12 in
B
18 in
8 ft
4 ft
0.07
0.52
7.6 fps
10 in
15 in
1
22.5 in
20 ft
8 ft

PROJECT NAME
M16 Middle School
LOCATION
Cary, NC
Storm Outlet Structure
FES No.= BMP M1
Pipe Dia= 24
in
Q10 = 17.10
cfs
Qfull = 32.20
cfs
Vfull = 6.60
fps
From Fig. 8.06.b.1:
From Fig. 8.06.b.2:
Storm Outlet Structure
FES No.= BMP M2
Pipe Dia= 30
in
Q10 = 12.20
cfs
Qfull = 45.20
cfs
Vfull = 9.20
fps
From Fig. 8.06.b.1:
From Fig. 8.06.b.2:
Zone
D50
DMAX
Riprap Class
Apron Thickness
Apron Length
Apron Width = 3xDia
Zone
D50
DMAX
Riprap Class
Apron Thickness
Apron Length
Apron Width = 3xDia
DATE
1-27-17
PROJECT NO
15-188
BY
KAL
CHECKED BY
Q10/Qfull =
V/Vfull =
V=
Q10/Qfull =
V/Vfull =
V=
DESIGN PHASE
PRELIM
CONSTR
REVISION
RECORD
OTHER
(SPECIFY)
0.53
1.01
6.7 fps
1►
8 in
12 in
B
18 in
12 ft
6 ft
0.27
0.83
7.6 fps
FA
8 in
12 in
B
18 in
15 ft
8 ft

PROJECT NAME
M16 Middle School
LOCATION
Cary, NC
Storm Outlet Structure
FES No.= BMP M3
Pipe Dia= 30
in
Q10 = 28.90
cfs
Qfull = 51.30
cfs
Vfull = 10.40
fps
From Fig. 8.06.b.1:
From Fig. 8.06.b.2:
Storm Outlet Structure
FES No.= BMP M3
Pipe Dia= 36
in
Q10 = 36.95
cfs
Qfull = 83.40
cfs
Vfull = 11.80
fps
From Fig. 8.06.b.1:
From Fig. 8.06.b.2:
Zone
D50
DMAX
Riprap Class
Apron Thickness
Apron Length
Apron Width = 3xDia
Zone
D50
DMAX
Riprap Class
Apron Thickness
Apron Length
Apron Width = 3xDia
DATE
1-27-17
PROJECT NO
15-188
BY
KAL
CHECKED BY
Q10/Qfull =
V/Vfull =
V=
Q10/Qfull =
V/Vfull =
V=
DESIGN PHASE
PRELIM
CONSTR
REVISION
RECORD
OTHER
(SPECIFY)
0.56
1.02
10.6 fps
1►
8 in
12 in
B
18 in
15 ft
8 ft
0.44
0.96
11.3 fps
10 in
15 in
1
22.5 in
24 ft
9 ft

Temporary
Sediment Basin Et
Skimmer Basins

PROJECT NAME
M16 Alston Ridge MS
LOCATION
Cary, NC
Basin Number:
Disturbed Area:
Additional Drainage Area:
Total Drainage Area:
Runoff Coeff [Cc]:
25 -yr Rainfall Intensity [I]:
25 -yr Discharge [Q25]:
10 -yr Rainfall Intensity [I]:
10 -yr Discharge [Q10]:
Required Sed. Storage Vol:
Required Surface Area:
Invert Elevation of Basin:
Elevation Interval of Basin:
DATE
2-2-17 � /J
PROJECT NO
15-188 (f
By
KAL
Site Conditions
ES -B Initial Final
3.10 3.10 ac
7.70 7.30 ac
10.80 10.40 ac
0.60 0.61
8.32 8.32 in/hr
53.92 52.79 cfs
7.22 7.22 in/hr
46.80 45.82 cfs Max
Dist. Area x 1800 = 5580 5580 5580 cf
435 sf/cfs = 20358 19931 20358 sf
277 ft
1.00 ft
Elevation
Area(sf)
Depth(ft)
Incr. Vol. (cf)
Cumm. Vol. (cf)
277.0
990
0
0
0
278.0
1750
1.0
1370
1370
279.0
2740
2.0
2245
3615
280.0
13810
3.0
8275
11890
281.0
21030
4.0
17420
29310
282.0
23510
5.0
22270
51580
283.0
26070
6.0
24790
76370
284.0
28710
7.0
27390
103760
285.0
31430
8.0
30070
133830
286.0
34240
9.0
1 32835 1
166665
Top of Req. Sediment Pool: 280.91 f)
Prinrinle Sniiiwav nawinn-
Riser Crest Elevation:
283.00 ft
Riser Invert Elevation:
277.00 ft
Riser Dimensions:
5.00 ft X 5.00 ft (Inside Dim)
Riser Wall Thickness
5.00 in
5.83 ft X 5.83 ft (Outside Dim)
Barrel Diameter:
30 in
Barrel Length:
66 ft
Barrel Slope:
3.00 %
25 -yr Water Surface Elevation:
Design Head [Hp]:
Min. Req. Capacity [0.2 cfs/ac]:
Pipe Capacity:
Riser Capacity, Weir Flow:
Riser Capacity, Orifice Flow:
Riser Capacity, Governing Flow:
Principle SDillwav Caoacitv [QDI:
285.00 ft
6.75 ft
2.2 cfs
61.4 cfs [Inlet Control]
169.7 cfs
170.2 cfs
169.7 cfs
61.4 cfs
15 -188 -SED -BASIN LATEST PRINTING: 2/9/201712:27 PM Page 1 of 8

ES -8
Spillway Crest Elevation:
Weir Length [L]:
Required Capacity [Q25-Qp]:
Required Head in Spillway [He]:
Freeboard:
Elevation of Embankment Top:
285.00 ft
8.00 ft
N/A cfs
0.00 ft (From Weir Eq.)
1.00 ft
286.00
Principle Spillway Anchor:
Length
Volume of Riser Interior (Inside Dims. x Height)
150.0 cf
Volume of Riser Walls (Wall thickness x Height)
54.2 cf
Weight of Concrete
150 pcf
Buoyancy Force
62.4 pcf
Weight of Buoyancy Force (Vol. of Riser x 62.4 pcf)
9360 lbs
Weight of Riser Walls (Vol. of Riser Walls x (150 - 62.4))
4745 lbs
Net Wt. Req. (Wt of Buoyance - Wt. of Riser Walls)
4615 lbs
Volume of Concrete Req. (Net Wt/(150 - 62.4))
53 cf
Proposed Safety Factor
1.50
Volume of Concrete Req. x S.F.
79 cf
Anchor Extension Width
1.00 ft
Anchor Dimensions
Length
7.83 ft
Width
7.83 ft
Anchor Thickness
1.50 ft
Anchor Volume Provided
92 cf
Volume of Concrete Req. Met?
YES
Target Dewatering Time:
3-5 days
Required Sed. Storage Vol:
5,580 cf
Draw -down Volume (SS Volume Provided):
51,580 cf
Skimmer Size:
4.0 in diameter
Orifice Size:
3.0 in diameter
Skimmer Orifice Capacity:
11,588 cf/day
Calculated Days to Drain:
4.5 days
Diameter of Barrel:
30 in
Upstream Invert Elev. of Barrel:
277.00 ft
Lower Invert Elev. of Barrel:
275.02 ft
Length of Barrel:
66 ft
Slope of Barrel:
3.00 %
Riser Length:
5.00 ft
Riser Width:
5.00 ft
Crest Elevation of Riser:
283.00 ft
Height of Riser:
6.00 ft
Skimmer Diameter:
4.00 in
Skimmer Orifice Diameter:
3.00 in
Conc. Anchor Length: 7.83 ft
Width: 7.83 ft
Thickness: 18.0 in
Emergency Spillway Crest Elev.:
285.00 ft
Width of Emergency Spillway:
8.0 ft
Elevation of Embankment Top:
286.00 ft
Top Width of Embankment:
8.0 ft
15 -188 -SED -BASIN LATEST PRINTING: 2/9/201712:27 PM Page 2 of 8

PROJECT NAME
M16 Alston Ridge MS
LOCATION
Cary, NC
Basin Number:
Disturbed Area:
Additional Drainage Area:
Total Drainage Area:
Runoff Coeff [Cc]:
25 -yr Rainfall Intensity [I]:
25 -yr Discharge [Q25]:
10 -yr Rainfall Intensity [I]:
10 -yr Discharge [Q10]:
Required Sed. Storage Vol:
Required Surface Area:
Invert Elevation of Basin:
Elevation Interval of Basin:
DATE
2-2-17 � /J
PROJECT NO
15-188 (f
By
KAL
Site Conditions
M1 Initial Final
7.30 6.50 ac
0.00 0.00 ac
7.30 6.50 ac
0.35 0.73
8.32 8.32 in/hr
21.26 39.49 cfs
7.22 7.22 in/hr
18.45 34.27 cfs Max
Dist. Area x 1800 = 13140 11700 13140 cf
435 sf/cfs = 8027 14907 14907 sf
259 ft
1.00 ft
Elevation
Area(sf)
Depth(ft)
Incr. Vol. (cf)
Cumm. Vol. (cf)
259.0
1150
0
0
0
260.0
1840
1.0
1495
1495
261.0
2660
2.0
2250
3745
262.0
11310
3.0
6985
10730
263.0
17060
4.0
14185
24915
264.0
18620
5.0
17840
42755
265.0
20240
6.0
19430
62185
266.0
21910
7.0
21075
83260
267.0
23650
8.0
22780
106040
268.0
25430
9.0
1 24540 1
130580
Top of Req. Sediment Pool: 262.63 f)
Prinrinle Sniiiwav nawinn-
Riser Crest Elevation:
263.00 ft
Riser Invert Elevation:
259.00 ft
Riser Dimensions:
5.00 ft X 5.00 ft (Inside Dim)
Riser Wall Thickness
5.00 in
5.83 ft X 5.83 ft (Outside Dim)
Barrel Diameter:
30 in
Barrel Length:
162 ft
Barrel Slope:
0.61 %
25 -yr Water Surface Elevation:
Design Head [Hp]:
Min. Req. Capacity [0.2 cfs/ac]:
Pipe Capacity:
Riser Capacity, Weir Flow:
Riser Capacity, Orifice Flow:
Riser Capacity, Governing Flow:
Principle SDillwav Caoacitv [QDI:
265.00 ft
4.75 ft
1.5 cfs
51.5 cfs [Inlet Control]
169.7 cfs
170.2 cfs
169.7 cfs
51.5 cfs
15 -188 -SED -BASIN LATEST PRINTING: 2/9/201712:27 PM Page 3 of 8

1�
Spillway Crest Elevation:
Weir Length [L]:
Required Capacity [Q25-Qp]:
Required Head in Spillway [He]:
Freeboard:
Elevation of Embankment Top:
265.00 ft
8.00 ft
N/A cfs
0.00 ft (From Weir Eq.)
1.00 ft
266.00
Principle Spillway Anchor:
Length
Volume of Riser Interior (Inside Dims. x Height)
100.0 cf
Volume of Riser Walls (Wall thickness x Height)
36.1 cf
Weight of Concrete
150 pcf
Buoyancy Force
62.4 pcf
Weight of Buoyancy Force (Vol. of Riser x 62.4 pcf)
6240 lbs
Weight of Riser Walls (Vol. of Riser Walls x (150 - 62.4))
3163 lbs
Net Wt. Req. (Wt of Buoyance - Wt. of Riser Walls)
3077 lbs
Volume of Concrete Req. (Net Wt/(150 - 62.4))
35 cf
Proposed Safety Factor
1.50
Volume of Concrete Req. x S.F.
53 cf
Anchor Extension Width
1.00 ft
Anchor Dimensions
Length
7.83 ft
Width
7.83 ft
Anchor Thickness
1.00 ft
Anchor Volume Provided
61 cf
Volume of Concrete Req. Met?
YES
Target Dewatering Time:
3-5 days
Required Sed. Storage Vol:
13,140 cf
Draw -down Volume (SS Volume Provided):
24,915 cf
Skimmer Size:
3.0 in diameter
Orifice Size:
2.5 in diameter
Skimmer Orifice Capacity:
6,969 cf/day
Calculated Days to Drain:
3.6 days
Diameter of Barrel:
30 in
Upstream Invert Elev. of Barrel:
259.00 ft
Lower Invert Elev. of Barrel:
258.01 ft
Length of Barrel:
162 ft
Slope of Barrel:
0.61 %
Riser Length:
5.00 ft
Riser Width:
5.00 ft
Crest Elevation of Riser:
263.00 ft
Height of Riser:
4.00 ft
Skimmer Diameter:
3.00 in
Skimmer Orifice Diameter:
2.50 in
Conc. Anchor Length: 7.83 ft
Width: 7.83 ft
Thickness: 12.0 in
Emergency Spillway Crest Elev.:
265.00 ft
Width of Emergency Spillway:
8.0 ft
Elevation of Embankment Top:
266.00 ft
Top Width of Embankment:
8.0 ft
15 -188 -SED -BASIN LATEST PRINTING: 2/9/201712:27 PM Page 4 of 8

PROJECT NAME
M16 Alston Ridge MS
LOCATION
Cary, NC
Basin Number:
Disturbed Area:
Additional Drainage Area:
Total Drainage Area:
Runoff Coeff [Cc]:
25 -yr Rainfall Intensity [I]:
25 -yr Discharge [Q25]:
10 -yr Rainfall Intensity [I]:
10 -yr Discharge [Q10]:
Required Sed. Storage Vol:
Required Surface Area:
Invert Elevation of Basin:
Elevation Interval of Basin:
DATE
2-2-17 � /J
PROJECT NO
15-188 (f
By
KAL
Site Conditions
M2 Initial Final
4.70 8.65 ac
0.00 0.00 ac
4.70 8.65 ac
0.35 0.62
8.32 8.32 in/hr
13.69 44.63 cfs
7.22 7.22 in/hr
11.88 38.73 cfs Max
Dist. Area x 1800 = 8460 15570 15570 cf
435 sf/cfs = 5168 16849 16849 sf
249 ft
1.00 ft
Elevation
Area(sf)
Depth(ft)
Incr. Vol. (cf)
Cumm. Vol. (cf)
249.0
1070
0
0
0
250.0
1700
1.0
1385
1385
251.0
2470
2.0
2085
3470
252.0
10770
3.0
6620
10090
253.0
16080
4.0
13425
23515
254.0
17700
5.0
16890
40405
255.0
19380
6.0
18540
58945
256.0
21110
7.0
20245
79190
257.0
22900
8.0
22005
101195
258.0
24750
9.0
1 23825 1
125020
Top of Req. Sediment Pool: 253.47 ft
Riser Crest Elevation:
253.50 ft
Riser Invert Elevation:
249.00 ft
Riser Dimensions:
5.00 ft X 5.00 ft (Inside Dim)
Riser Wall Thickness
5.00 in
5.83 ft X 5.83 ft (Outside Dim)
Barrel Diameter:
30 in
Barrel Length:
148 ft
Barrel Slope:
1.20 %
25 -yr Water Surface Elevation:
Design Head [Hp]:
Min. Req. Capacity [0.2 cfs/ac]:
Pipe Capacity:
Riser Capacity, Weir Flow:
Riser Capacity, Orifice Flow:
Riser Capacity, Governing Flow:
Principle SDillwav Caoacitv [QDI:
255.00 ft
4.75 ft
1.7 cfs
51.5 cfs [Inlet Control]
110.2 cfs
147.4 cfs
110.2 cfs
51.5 cfs
15 -188 -SED -BASIN LATEST PRINTING: 2/9/201712:27 PM Page 5 of 8

Spillway Crest Elevation:
Weir Length [L]:
Required Capacity [Q25-Qp]:
Required Head in Spillway [He]:
Freeboard:
Elevation of Embankment Top:
255.00 ft
8.00 ft
N/A cfs
0.00 ft (From Weir Eq.)
1.00 ft
256.00
Principle Spillway Anchor:
Length
Volume of Riser Interior (Inside Dims. x Height)
112.5 cf
Volume of Riser Walls (Wall thickness x Height)
40.6 cf
Weight of Concrete
150 pcf
Buoyancy Force
62.4 pcf
Weight of Buoyancy Force (Vol. of Riser x 62.4 pcf)
7020 lbs
Weight of Riser Walls (Vol. of Riser Walls x (150 - 62.4))
3559 lbs
Net Wt. Req. (Wt of Buoyance - Wt. of Riser Walls)
3461 lbs
Volume of Concrete Req. (Net Wt/(150 - 62.4))
40 cf
Proposed Safety Factor
1.50
Volume of Concrete Req. x S.F.
59 cf
Anchor Extension Width
1.00 ft
Anchor Dimensions
Length
7.83 ft
Width
7.83 ft
Anchor Thickness
1.00 ft
Anchor Volume Provided
61 cf
Volume of Concrete Req. Met?
YES
Target Dewatering Time:
3-5 days
Required Sed. Storage Vol:
15,570 cf
Draw -down Volume (SS Volume Provided):
23,515 cf
Skimmer Size:
3.0 in diameter
Orifice Size:
2.5 in diameter
Skimmer Orifice Capacity:
6,969 cf/day
Calculated Days to Drain:
3.4 days
Diameter of Barrel:
30 in
Upstream Invert Elev. of Barrel:
249.00 ft
Lower Invert Elev. of Barrel:
247.22 ft
Length of Barrel:
148 ft
Slope of Barrel:
1.20 %
Riser Length:
5.00 ft
Riser Width:
5.00 ft
Crest Elevation of Riser:
253.50 ft
Height of Riser:
4.50 ft
Skimmer Diameter:
3.00 in
Skimmer Orifice Diameter:
2.50 in
Conc. Anchor Length: 7.83 ft
Width: 7.83 ft
Thickness: 12.0 in
Emergency Spillway Crest Elev.:
255.00 ft
Width of Emergency Spillway:
8.0 ft
Elevation of Embankment Top:
256.00 ft
Top Width of Embankment:
8.0 ft
15 -188 -SED -BASIN LATEST PRINTING: 2/9/201712:27 PM Page 6 of 8

PROJECT NAME
M16 Alston Ridge MS
LOCATION
Cary, NC
Basin Number:
Disturbed Area:
Additional Drainage Area:
Total Drainage Area:
Runoff Coeff [Cc]:
25 -yr Rainfall Intensity [I]:
25 -yr Discharge [Q25]:
10 -yr Rainfall Intensity [I]:
10 -yr Discharge [Q10]:
Required Sed. Storage Vol:
Required Surface Area:
Invert Elevation of Basin:
Elevation Interval of Basin:
DATE
2-2-17 � /J
PROJECT NO
15-188 (f
By
KAL
Site Conditions
M3 Initial Final
10.50 12.92 ac
0.00 0.00 ac
10.50 12.92 ac
0.35 0.56
8.32 8.32 in/hr
30.58 60.21 cfs
7.22 7.22 in/hr
26.54 52.25 cfs Max
Dist. Area x 1800 = 18900 23256 23256 cf
435 sf/cfs = 11546 22731 22731 sf
262 ft
1.00 ft
Elevation
Area(sf)
Depth(ft)
Incr. Vol. (cf)
Cumm. Vol. (cf)
262.0
760
0
0
0
263.0
1540
1.0
1150
1150
264.0
2610
2.0
2075
3225
265.0
13460
3.0
8035
11260
266.0
20580
4.0
17020
28280
267.0
23500
5.0
22040
50320
268.0
26480
6.0
24990
75310
269.0
29530
7.0
28005
103315
270.0
35500
8.0
32515
135830
271.0
43780
9.0
1 39640 1
175470
Top of Req. Sediment Pool: 266.74 ft
Prinrinle Sniiiwav nawinn-
Riser Crest Elevation:
267.00 ft
Riser Invert Elevation:
262.00 ft
Riser Dimensions:
5.00 ft X 5.00 ft (Inside Dim)
Riser Wall Thickness
5.00 in
5.83 ft X 5.83 ft (Outside Dim)
Barrel Diameter:
30 in
Barrel Length:
64 ft
Barrel Slope:
0.78 %
25 -yr Water Surface Elevation:
Design Head [Hp]:
Min. Req. Capacity [0.2 cfs/ac]:
Pipe Capacity:
Riser Capacity, Weir Flow:
Riser Capacity, Orifice Flow:
Riser Capacity, Governing Flow:
Principle SDillwav Caoacitv [QDI:
269.50 ft
6.25 ft
2.6 cfs
59.1 cfs [Inlet Control]
237.2 cfs
190.3 cfs
190.3 cfs
59.1 cfs
15 -188 -SED -BASIN LATEST PRINTING: 2/9/201712:27 PM Page 7 of 8

IIA
Spillway Crest Elevation:
Weir Length [L]:
Required Capacity [Q25-Qp]:
Required Head in Spillway [He]:
Freeboard:
Elevation of Embankment Top:
269.50 ft
8.00 ft
1.12 cfs
0.13 ft (From Weir Eq.)
1.00 ft
270.63
Principle Spillway Anchor:
Length
Volume of Riser Interior (Inside Dims. x Height)
125.0 cf
Volume of Riser Walls (Wall thickness x Height)
45.1 cf
Weight of Concrete
150 pcf
Buoyancy Force
62.4 pcf
Weight of Buoyancy Force (Vol. of Riser x 62.4 pcf)
7800 lbs
Weight of Riser Walls (Vol. of Riser Walls x (150 - 62.4))
3954 lbs
Net Wt. Req. (Wt of Buoyance - Wt. of Riser Walls)
3846 lbs
Volume of Concrete Req. (Net Wt/(150 - 62.4))
44 cf
Proposed Safety Factor
1.50
Volume of Concrete Req. x S.F.
66 cf
Anchor Extension Width
1.00 ft
Anchor Dimensions
Length
7.83 ft
Width
7.83 ft
Anchor Thickness
1.50 ft
Anchor Volume Provided
92 cf
Volume of Concrete Req. Met?
YES
Target Dewatering Time:
3-5 days
Required Sed. Storage Vol:
23,256 cf
Draw -down Volume (SS Volume Provided):
50,320 cf
Skimmer Size:
4.0 in diameter
Orifice Size:
3.0 in diameter
Skimmer Orifice Capacity:
11,588 cf/day
Calculated Days to Drain:
4.3 days
Diameter of Barrel:
30 in
Upstream Invert Elev. of Barrel:
262.00 ft
Lower Invert Elev. of Barrel:
261.50 ft
Length of Barrel:
64 ft
Slope of Barrel:
0.78 %
Riser Length:
5.00 ft
Riser Width:
5.00 ft
Crest Elevation of Riser:
267.00 ft
Height of Riser:
5.00 ft
Skimmer Diameter:
4.00 in
Skimmer Orifice Diameter:
3.00 in
Conc. Anchor Length: 7.83 ft
Width: 7.83 ft
Thickness: 18.0 in
Emergency Spillway Crest Elev.:
269.50 ft
Width of Emergency Spillway:
8.0 ft
Elevation of Embankment Top:
270.63 ft
Top Width of Embankment:
8.0 ft
15 -188 -SED -BASIN LATEST PRINTING: 2/9/201712:27 PM Page 8 of 8

rPROJECT
DATE
2-3-17
PROJECT NOton Ridge MS 15-188
BY
Ca rv. NC KAL
Skimmer Basin No.:
TSSB-1 Site Conditions
Depth(ft)
Incr. Vol. (cf)
Initial Final
Disturbed Area:
2.75
0.80 ac
Additional Drainage Area:
0.00
0.00 ac
Total Drainage Area:
2.75
0.80 ac
Runoff Coeff [Cc]:
0.35
0.35
10 -yr Rainfall Intensity [I]:
7.22
7.22 in/hr
10 -yr Discharge [Q10]:
6.95
2.02 cfs Max
Required Sed. Storage Vol:
Dist.A. x 1800 = 4950
1440 4950 cf
Required Surface Area:
325 sf/cfs = 2259
657 2259 sf
Bottom Elevation of Basin:
Elevation Interval of Basin:
262.0 ft
1.00 ft
Elevation
Area(sf)
Depth(ft)
Incr. Vol. (cf)
Cumm. Vol. (cf)
262.0
2100
0
0
0
263.0
2516
1.0
2308
2308
264.0
2964
2.0
2740
5048
265.0
3444
3.0
3204
8252
265.5 ft
Top of Req. Sediment Pool (per Surface Area): 262.38 ft
Top of Req. Sediment Pool (per Volume): 263.96 ft
Target Dewatering Time:
3-5 days
Draw -down Volume:
4950 cf
Skimmer Size:
1.5 in diameter
Skimmer Orifice Size:
1.250 in diameter
Skimmer Orifice Capacity:
1233 cf /day
Calculated Days to Drain:
4.02 days
Emergency Spillway Weir Elevation:
264.00 ft
Weir Width:
10.00 ft
Weir Capacity:
6.96 cfs
25 -yr Water Surface Elevation:
264.38 ft
Freeboard:
1.00 ft
Min. Embankment Elevation:
265.38 ft
Set Embankment Elevation:
265.5 ft
Surface Area Required: 2259 sf
Surface Area Provided: 2964 sf OK
Sediment Storage Volume Required: 4950 cf
Sediment Storage Provided: 5048 cf OK
15 -188 -SED -SKIM -BASIN LATEST PRINTING: 2/9/201712:28 PM Page 2 of 6

PROJECT NAME
M16 Alston Ridge MS
LOCATION
Cary, NC
Skimmer Basin No.:
Disturbed Area:
Additional Drainage Area:
Total Drainage Area:
Runoff Coeff [Cc]:
10 -yr Rainfall Intensity [1]:
10 -yr Discharge [Q10]:
Required Sed. Storage Vol
Required Surface Area:
Bottom Elevation of Basin:
Elevation Interval of Basin:
DATE
2-3-17 � /J
PROJECT NO
15-188 o I�
BY
KAL !/
TSSB-2 Site Conditions
Initial
Final
2.17
0.20 ac
0.00
0.00 ac
2.17
0.20 ac
0.35
0.35
7.22
7.22 in/hr
5.49
0.51 cfs Max
Dist.A. x 1800 = 3906
360 3906 cf
325 sf/cfs = 1783
164 1783 sf
286.0 ft
1.00 ft
Elevation
Area(sf)
Depth(ft)
Incr. Vol. (cf)
Cumm. Vol. (cf)
286.0
1520
0
0
0
287.0
1980
1.0
1750
1750
288.0
2472
2.0
2226
3976
289.0
2996
3.0
2734
6710
289.5 ft
Top of Req. Sediment Pool (per Surface Area): 286.57 ft
Top of Req. Sediment Pool (per Volume): 287.97 ft
Target Dewatering Time:
3-5 days
Draw -down Volume:
3906 cf
Skimmer Size:
1.5 in diameter
Skimmer Orifice Size:
1.250 in diameter
Skimmer Orifice Capacity:
1233 cf /day
Calculated Days to Drain:
3.17 days
Emergency Spillway Weir Elevation:
288.00 ft
Weir Width:
10.00 ft
Weir Capacity:
5.49 cfs
25 -yr Water Surface Elevation:
288.32 ft
Freeboard:
1.00 ft
Min. Embankment Elevation:
289.32 ft
Set Embankment Elevation:
289.5 ft
Surface Area Required: 1783 sf
Surface Area Provided: 2472 sf OK
Sediment Storage Volume Required: 3906 cf
Sediment Storage Provided: 3976 cf OK
15 -188 -SED -SKIM -BASIN LATEST PRINTING: 2/9/201712:28 PM Page 3 of 6

PROJECT NAME
M16 Alston Ridge MS
LOCATION
Cary, NC
Skimmer Basin No.:
Disturbed Area:
Additional Drainage Area:
Total Drainage Area:
Runoff Coeff [Cc]:
10 -yr Rainfall Intensity [1]:
10 -yr Discharge [Q10]:
Required Sed. Storage Vol
Required Surface Area:
Bottom Elevation of Basin:
Elevation Interval of Basin:
DATE
2-3-17 � /J
PROJECT NO
15-188 o I�
BY
KAL !/
TSSB-3 Site Conditions
Initial
Final
0.80
0.80 ac
0.37
0.37 ac
1.17
1.17 ac
0.35
0.35
7.22
7.22 in/hr
2.96
2.96 cfs Max
Dist.A. x 1800 = 1440
1440 1440 cf
325 sf/cfs = 961
961 961 sf
286.0 ft
1.00 ft
Elevation
Area(sf)
Depth(ft)
Incr. Vol. (cf)
Cumm. Vol. (cf)
286.0
528
0
0
0
287.0
740
1.0
634
634
288.0
984
2.0
862
1496
289.0
1260
3.0
1122
2618
289.5 ft
Top of Req. Sediment Pool (per Surface Area): 287.91 ft
Top of Req. Sediment Pool (per Volume): 287.94 ft
Target Dewatering Time:
3-5 days
Draw -down Volume:
1440 cf
Skimmer Size:
1.5 in diameter
Skimmer Orifice Size:
0.750 in diameter
Skimmer Orifice Capacity:
444 cf /day
Calculated Days to Drain:
3.25 days
Emergency Spillway Weir Elevation:
288.00 ft
Weir Width:
10.00 ft
Weir Capacity:
2.96 cfs
25 -yr Water Surface Elevation:
288.21 ft
Freeboard:
1.00 ft
Min. Embankment Elevation:
289.21 ft
Set Embankment Elevation:
289.5 ft
Surface Area Required: 961 sf
Surface Area Provided: 984 sf OK
Sediment Storage Volume Required: 1440 cf
Sediment Storage Provided: 1496 cf OK
15 -188 -SED -SKIM -BASIN LATEST PRINTING: 2/9/201712:28 PM Page 4 of 6

PROJECT NAME
M16 Alston Ridge MS
LOCATION
Cary, NC
Skimmer Basin No.:
Disturbed Area:
Additional Drainage Area:
Total Drainage Area:
Runoff Coeff [Cc]:
10 -yr Rainfall Intensity [1]:
10 -yr Discharge [Q10]:
Required Sed. Storage Vol
Required Surface Area:
Bottom Elevation of Basin:
Elevation Interval of Basin:
DATE
2-3-17 � /J
PROJECT NO
15-188 o I�
BY
KAL !/
TSSB-4 Site Conditions
Initial
Final
1.60
1.80 ac
1.00
1.00 ac
2.60
2.80 ac
0.35
0.43
7.22
7.22 in/hr
6.57
8.70 cfs Max
Dist.A. x 1800 = 2880
3240 3240 cf
325 sf/cfs = 2136
2826 2826 sf
264.0 ft
1.00 ft
Elevation
Area(sf)
Depth(ft)
Incr. Vol. (cf)
Cumm. Vol. (cf)
264.0
1944
0
0
0
265.0
2380
1.0
2162
2162
266.0
2848
2.0
2614
4776
267.0
3348
3.0
3098
7874
267.5 ft
Top of Req. Sediment Pool (per Surface Area): 265.95 ft
Top of Req. Sediment Pool (per Volume): 265.41 ft
Target Dewatering Time:
3-5 days
Draw -down Volume:
3240 cf
Skimmer Size:
1.5 in diameter
Skimmer Orifice Size:
1.000 in diameter
Skimmer Orifice Capacity:
789 cf /day
Calculated Days to Drain:
4.11 days
Emergency Spillway Weir Elevation:
266.00 ft
Weir Width:
10.00 ft
Weir Capacity:
8.71 cfs
25 -yr Water Surface Elevation:
266.44 ft
Freeboard:
1.00 ft
Min. Embankment Elevation:
267.44 ft
Set Embankment Elevation:
267.5 ft
Surface Area Required: 2826 sf
Surface Area Provided: 2848 sf OK
Sediment Storage Volume Required: 3240 cf
Sediment Storage Provided: 4776 cf OK
15 -188 -SED -SKIM -BASIN LATEST PRINTING: 2/9/201712:28 PM Page 5 of 6

rPROJECT
DATE
2-3-17
PROJECT NOton Ridge MS 15-188
BY
Ca rv. NC KAL
Skimmer Basin No.:
TSSB-5 Site Conditions
Depth(ft)
Incr. Vol. (cf)
Initial Final
Disturbed Area:
1.05
1.30 ac
Additional Drainage Area:
0.00
0.00 ac
Total Drainage Area:
1.05
1.30 ac
Runoff Coeff [Cc]:
0.35
0.72
10 -yr Rainfall Intensity [I]:
7.22
7.22 in/hr
10 -yr Discharge [Q10]:
2.65
6.76 cfs Max
Required Sed. Storage Vol:
Dist.A. x 1800 = 1890
2340 2340 cf
Required Surface Area:
325 sf/cfs = 863
2197 2197 sf
Bottom Elevation of Basin:
Elevation Interval of Basin:
266.0 ft
1.00 ft
Elevation
Area(sf)
Depth(ft)
Incr. Vol. (cf)
Cumm. Vol. (cf)
266.0
1200
0
0
0
267.0
1512
1.0
1356
1356
268.0
1856
2.0
1684
3040
269.0
2232
3.0
2044
5084
270.5 ft
Top of Req. Sediment Pool (per Surface Area): 268.91 ft
Top of Req. Sediment Pool (per Volume): 267.58 ft
Target Dewatering Time:
3-5 days
Draw -down Volume:
2340 cf
Skimmer Size:
1.5 in diameter
Skimmer Orifice Size:
0.875 in diameter
Skimmer Orifice Capacity:
604 cf /day
Calculated Days to Drain:
3.87 days
Emergency Spillway Weir Elevation:
269.00 ft
Weir Width:
10.00 ft
Weir Capacity:
6.77 cfs
25 -yr Water Surface Elevation:
269.37 ft
Freeboard:
1.00 ft
Min. Embankment Elevation:
270.37 ft
Set Embankment Elevation:
270.5 ft
Surface Area Required: 2197 sf
Surface Area Provided: 2232 sf OK
Sediment Storage Volume Required: 2340 cf
Sediment Storage Provided: 5084 cf OK
15 -188 -SED -SKIM -BASIN LATEST PRINTING: 2/9/201712:28 PM Page 6 of 6

Misc. Erosion Control

DATE
� ► 2-3-17
PROJECT NAME PROJECT NO
M16 Alston Ridge MS 15-188
LOCATION BY
Cary, NC KAL
Weir Check Dam #: A Drainage Area: 1.00 ac
Design Frequency: 10 yrs
Allowable Head: .5 ft Time of Conc: 5.00 min
Cw: 3.0 Intensity: 7.22 in/hr
Runoff Coeff: 0.56
Discharge: 4.04 cfs
Disturbed Area: 1.00 ac
Wier Length: L = Q/0.88
L = 4.59 ft
Use: L = 5.0 ft
Find H: H = (Q/Cw x L)^2/3
H = 0.42 ft
Volume Required: Vol=DA*1800 cf
Vol= 1800 cf
Bottom Elevation of Basin: 255.0 ft
Elevation Interval of Basin: 0.50 ft
Elevation
Area(sf)
Depth(ft)
Incr. Vol. (c
Cumm. Vol. (cf)
255.0
684
0
0
0
255.5
800
0.5
371
371
256.0
924
1.0
431
802
256.5
1056
1.5
495
1297
257.0
1196
2.0
563
1860

DATE
� ► 2-3-17
PROJECT NAME PROJECT NO
M16 Alston Ridge MS 15-188
LOCATION BY
Cary, NC KAL
Weir Check Dam #: B Drainage Area: 0.62 ac
Design Frequency: 10 yrs
Allowable Head: .5 ft Time of Conc: 5.00 min
Cw: 3.0 Intensity: 7.22 in/hr
Runoff Coeff: 0.35
Discharge: 1.57 cfs
Disturbed Area: 0.62 ac
Wier Length: L = Q/0.88
L = 1.78 ft
Use: L = 4.0 ft
Find H: H = (Q/Cw x L)^2/3
H = 0.26 ft
Volume Required: Vol=DA*1800 cf
Vol= 1116 cf
Bottom Elevation of Basin: 261.0 ft
Elevation Interval of Basin: 0.50 ft
Elevation
Area(sf)
Depth(ft)
Incr. Vol. (c
Cumm. Vol. (cf)
261.0
390
0
0
0
261.5
480
0.5
218
218
262.0
578
1.0
265
482
262.5
684
1.5
316
798
263.0
798
2.0
371
1168

DATE
� ► 2-3-17
PROJECT NAME PROJECT NO
M16 Alston Ridge MS 15-188
LOCATION BY
Cary, NC KAL
Weir Check Dam #: C Drainage Area: 0.74 ac
Design Frequency: 10 yrs
Allowable Head: .5 ft Time of Conc: 5.00 min
Cw: 3.0 Intensity: 7.22 in/hr
Runoff Coeff: 0.35
Discharge: 1.87 cfs
Disturbed Area: 0.74 ac
Wier Length: L = Q/0.88
L = 2.12 ft
Use: L = 4.0 ft
Find H: H = (Q/Cw x L)^2/3
H = 0.29 ft
Volume Required: Vol=DA*1800 cf
Vol= 1332 cf
Bottom Elevation of Basin: 245.0 ft
Elevation Interval of Basin: 0.50 ft
Elevation
Area(sf)
Depth(ft)
Incr. Vol. (c
Cumm. Vol. (cf)
245.0
440
0
0
0
245.5
546
0.5
247
247
246.0
660
1.0
302
548
246.5
782
1.5
361
909
247.0
912
2.0
424
1332

DATE
� ► 2-3-17
PROJECT NAME PROJECT NO
M16 Alston Ridge MS 15-188
LOCATION BY
Cary, NC KAL
Weir Check Dam #: D Drainage Area: 0.40 ac
Design Frequency: 10 yrs
Allowable Head: .5 ft Time of Conc: 5.00 min
Cw: 3.0 Intensity: 7.22 in/hr
Runoff Coeff: 0.35
Discharge: 1.01 cfs
Disturbed Area: 0.40 ac
Wier Length: L = Q/0.88
L = 1.15 ft
Use: L = 4.0 ft
Find H: H = (Q/Cw x L)^2/3
H = 0.19 ft
Volume Required: Vol=DA*1800 cf
Vol= 720 cf
Bottom Elevation of Basin: 246.0 ft
Elevation Interval of Basin: 0.50 ft
Elevation
Area(sf)
Depth(ft)
Incr. Vol. (c
Cumm. Vol. (cf)
246.0
228
0
0
0
246.5
294
0.5
131
131
247.0
368
1.0
166
296
247.5
450
1.5
205
501
248.0
540
2.0
248
748

DATE
� ► 2-3-17
PROJECT NAME PROJECT NO
M16 Alston Ridge MS 15-188
LOCATION BY
Cary, NC KAL
Weir Check Dam #: E Drainage Area: 0.71 ac
Design Frequency: 10 yrs
Allowable Head: .5 ft Time of Conc: 5.00 min
Cw: 3.0 Intensity: 7.22 in/hr
Runoff Coeff: 0.35
Discharge: 1.79 cfs
Disturbed Area: 0.71 ac
Wier Length: L = Q/0.88
L = 2.04 ft
Use: L = 4.0 ft
Find H: H = (Q/Cw x L)^2/3
H = 0.28 ft
Volume Required: Vol=DA*1800 cf
Vol= 1278 cf
Bottom Elevation of Basin: 282.5 ft
Elevation Interval of Basin: 0.50 ft
Elevation
Area(sf)
Depth(ft)
Incr. Vol. (c
Cumm. Vol. (cf)
282.5
418
0
0
0
283.0
520
0.5
235
235
283.5
630
1.0
288
522
284.0
748
1.5
345
867
284.5
874
2.0
406
1272

DATE
� ► 2-3-17
PROJECT NAME PROJECT NO
M16 Alston Ridge MS 15-188
LOCATION BY
Cary, NC KAL
Weir Check Dam #: F Drainage Area: 0.35 ac
Design Frequency: 10 yrs
Allowable Head: .5 ft Time of Conc: 5.00 min
Cw: 3.0 Intensity: 7.22 in/hr
Runoff Coeff: 0.35
Discharge: 0.88 cfs
Disturbed Area: 0.20 ac
Wier Length: L = Q/0.88
L = 1.01 ft
Use: L = 4.0 ft
Find H: H = (Q/Cw x L)^2/3
H = 0.18 ft
Volume Required: Vol=DA*1800 cf
Vol= 360 cf
Bottom Elevation of Basin: 293.5 ft
Elevation Interval of Basin: 0.50 ft
Elevation
Area(sf)
Depth(ft)
Incr. Vol. (c
Cumm. Vol. (cf)
293.5
84
0
0
0
294.0
126
0.5
53
53
294.5
176
1.0
76
128
295.0
234
1.5
103
231
295.5
300
2.0
134
364

DATE
� ► 2-3-17
PROJECT NAME PROJECT NO
M16 Alston Ridge MS 15-188
LOCATION BY
Cary, NC KAL
Weir Check Dam #: G Drainage Area: 0.50 ac
Design Frequency: 10 yrs
Allowable Head: .5 ft Time of Conc: 5.00 min
Cw: 3.0 Intensity: 7.22 in/hr
Runoff Coeff: 0.35
Discharge: 1.26 cfs
Disturbed Area: 0.40 ac
Wier Length: L = Q/0.88
L = 1.44 ft
Use: L = 4.0 ft
Find H: H = (Q/Cw x L)^2/3
H = 0.22 ft
Volume Required: Vol=DA*1800 cf
Vol= 720 cf
Bottom Elevation of Basin: 266.5 ft
Elevation Interval of Basin: 0.50 ft
Elevation
Area(sf)
Depth(ft)
Incr. Vol. (c
Cumm. Vol. (cf)
266.5
230
0
0
0
267.0
336
0.5
142
142
267.5
450
1.0
197
338
268.0
572
1.5
256
594
268.5
702
2.0
319
912

DATE
� ► 2-3-17
PROJECT NAME PROJECT NO
M16 Alston Ridge MS 15-188
LOCATION BY
Cary, NC KAL
Weir Check Dam #: H Drainage Area: 0.25 ac
Design Frequency: 10 yrs
Allowable Head: .5 ft Time of Conc: 5.00 min
Cw: 3.0 Intensity: 7.22 in/hr
Runoff Coeff: 0.35
Discharge: 0.63 cfs
Disturbed Area: 0.25 ac
Wier Length: L = Q/0.88
L = 0.72 ft
Use: L = 4.0 ft
Find H: H = (Q/Cw x L)^2/3
H = 0.14 ft
Volume Required: Vol=DA*1800 cf
Vol= 450 cf
Bottom Elevation of Basin: 267.5 ft
Elevation Interval of Basin: 0.50 ft
Elevation
Area(sf)
Depth(ft)
Incr. Vol. (c
Cumm. Vol. (cf)
267.5
105
0
0
0
268.0
161
0.5
67
67
268.5
225
1.0
97
163
269.0
297
1.5
131
294
269.5
377
2.0
169
462

DATE
� ► 2-3-17
PROJECT NAME PROJECT NO
M16 Alston Ridge MS 15-188
LOCATION BY
Cary, NC KAL
Weir Check Dam #: H Drainage Area: 0.20 ac
Design Frequency: 10 yrs
Allowable Head: .5 ft Time of Conc: 5.00 min
Cw: 3.0 Intensity: 7.22 in/hr
Runoff Coeff: 0.35
Discharge: 0.51 cfs
Disturbed Area: 0.20 ac
Wier Length: L = Q/0.88
L = 0.57 ft
Use: L = 4.0 ft
Find H: H = (Q/Cw x L)^2/3
H = 0.12 ft
Volume Required: Vol=DA*1800 cf
Vol= 360 cf
Bottom Elevation of Basin: 267.5 ft
Elevation Interval of Basin: 0.50 ft
Elevation
Area(sf)
Depth(ft)
Incr. Vol. (c
Cumm. Vol. (cf)
267.5
88
0
0
0
268.0
130
0.5
55
55
268.5
180
1.0
78
132
269.0
238
1.5
105
237
269.5
304
2.0
136
372

Design Calculations
MI6 Middle School
Utility Calculations
Cary, North Carolina
,�aya •!ate y���,
December, 2016
~ � a��SS1p
.-q
SE =
�Z"
CLH design, .a.p
400 Regency Forest Drive, Suite 120
Cary, North Carolina 2 791 12 7918
Phone. [phone] Fax: [phone]

PROJECT NAME
M16 Middle School
LOCATION
Cary, NC
From High School to Outfall
DATE
12-7-16
DESIGN PHASE
SD
DD
CD
REV
OTHER
(SPECIFY)
PROJECT NO
15-188
BY
KAL
CHECKED BY
High School
Number of Students: 1280 x 15 gal/day = 19,200 gal/day
Total Outflow: 19,200 gal/day
Peak Factor: 3.3
Total Peak Outflow 63,360 gal/day
Total Outflow: 63,360 gal/day
Average Time of Daily Flow 8 hrs = 132 gpm
Flow Rate: 0.294 cfs
Find Diameter of Sewer Main:
Slope (ft/ft) 0.0062
n= 0.013
Dia. (in) 8
Capacity (cfs) 0.476 (flowing 1/2 full) >= 0.294 cfs OK

PROJECT NAME
M16 Middle School
LOCATION
Cary, NC
DATE
12-7-16
PROJECT NO
15-188
BY
KAL
Restraint Joint for Dead End required for all valve locations.
Fs= Unit frictiional force (Ib/ft)=S.F.*P*A/Fs
Soil Classification for majority of site: CL, ML use ML
Safety Factor: 1.75
Pressure in pipe: 350 psi
Pipe Diameter (D): 8 in A= 50.27 sq in
Pipe Cover (H): 4 ft
Soil Density: 100 psf
Find Fs: Ap*C+Wtan(delta from Soil Classification Tables)
Find W: 2We+Wp+Ww
Find delta: Soil Friction x Angle: Angle= 29
Delta= 21.75
C=FsCs , where FcCs is from Soil Classification Tables
Ap=D*pi= 2.0944
For ML soil, Fc= 0
Cs= 0
C= Fc*Cs= 0.0
We=H*Soil Density*D= 266.67 Ib/ft
Wp= 24 (Ib/ft) for DIP
Ww= 24 (Ib/ft)
W= 581 Ib/ft
Fs= 232
Length for Restraint Joint Required:
Friction s: 0.75
133 LF
CLH design, p.a. LATEST REVISION: 12/8/2016 11:02 AM PAGE 1 OF 2

PROJECT NAME
M16 Middle School
LOCATION
Cary, NC
DATE
12-7-16
PROJECT NO
15-188
BY
KAL
Restraint Joint for Dead End required for all valve locations.
Fs= Unit frictiional force (Ib/ft)=S.F.*P*A/Fs
Soil Classification for majority of site: CL, ML use ML
Safety Factor: 1.75
Pressure in pipe: 350 psi
Pipe Diameter (D): 12 in A= 113.10 sq in
Pipe Cover (H): 4 ft
Soil Density: 100 psf
Find Fs: Ap*C+Wtan(delta from Soil Classification Tables)
Find W: 2We+Wp+Ww
Find delta: Soil Friction x Angle: Angle= 29
Delta= 21.75
C=FsCs , where FcCs is from Soil Classification Tables
Ap=D*pi= 3.1416
For ML soil, Fc= 0
Cs= 250
C= Fc*Cs= 0.0
We=H*Soil Density*D= 400.00 Ib/ft
Wp= 39 (Ib/ft) for DIP
Ww= 53 (Ib/ft)
W= 892 Ib/ft
Fs= 356
Length for Restraint Joint Required: 195 LF
Friction s: 0.75
CLH design, p.a. LATEST REVISION: 12/8/2016 11:02 AM PAGE 2 OF 2

Natural and
Culturaf Resources
February 21, 2017
Elias Ruhl
F&R
310 Hubert Street
Raleigh, NC 27603
RE: M-16 Middle School; 66T-0289-0001
Dear Elias Ruhl:
ROY COOPER
Goi ei rear
SUSI H. H_ AI LTCI
&Acrera t
NCNHDE-2996
The North Carolina Natural Heritage Program (NCNHP) appreciates the opportunity to provide information
about natural heritage resources for the project referenced above.
A query of the NCNHP database indicates that there are records for rare species, important natural
communities, natural areas, or conservation/managed areas within the proposed project boundary. These
results are presented in the attached `Documented Occurrences' tables and map.
The attached `Potential Occurrences' table summarizes rare species and natural communities that have been
documented within a one -mile radius of the property boundary. The proximity of these records suggests that
these natural heritage elements may potentially be present in the project area if suitable habitat exists and is
included for reference. Tables of natural areas and conservation/managed area within a one -mile radius of the
project area, if any, are also included in this report.
Please note that natural heritage element data are maintained for the purposes of conservation planning, project
review, and scientific research, and are not intended for use as the primary criteria for regulatory decisions.
Information provided by the NCNHP database may not be published without prior written notification to the
NCNHP, and the NCNHP must be credited as an information source in these publications. Maps of NCNHP
data may not be redistributed without permission.
Also please note that the NC Natural Heritage Program may follow this letter with additional correspondence if a
Dedicated Nature Preserve (DNP), Registered Heritage Area (RHA), Clean Water Management Trust Fund
(CWMTF) easement, or an occurrence of a Federally -listed species is documented near the project area.
If you have questions regarding the information provided in this letter or need additional assistance, please
contact Matthew Hebb at matthew.hebb ono ncdcr.gov or 919.707.8603.
Sincerely,
NC Natural Heritage Program
—5 -`Nothing Compares =
Stats cf North Carolina I department of Natural and cultural Resources I Natura I Heritage Program
121 W. Jones Street I Raleigh, NC 37663
1651 Mall Service Center I Raleigh,NC 27699-1651..
www_ncnhp,org 1919-707-6107

Natural Heritage Element Occurrences, Natural Areas, and Managed Areas Intersecting the Project Area
M-16 Middle School
Project No. 66T-0289-0001
February 21, 2017
NCNHDE-2996
No Element Occurrences are Documented within the Project Area
There are no documented element occurrences (of medium to very high accuracy) that intersect with the project area. Please note, however, that although the NCNHP database
does not show records for rare species within the project area, it does not necessarily mean that they are not present; it may simply mean that the area has not been surveyed. The
use of Natural Heritage Program data should not be substituted for actual field surveys if needed, particularly if the project area contains suitable habitat for rare species. If rare
species are found, the NCNHP would appreciate receiving this information so that we may update our database.
No Natural Areas are Documented within the Project Area
Managed Areas Documented Within Project Area
Managed Area Name Owner Owner Type
B. Everett Jordan Dam and Lake US Army Corps of Engineers Federal
NOTE: If the proposed project intersects with a conservation/managed area, please contact the landowner directly for additional information. If the project intersects with a Dedicated Nature Preserve (DNP), Registered Natural
Heritage Area (RHA), or Federally -listed species, NCNHP staff may provide additional correspondence regarding the project.
Definitions and an explanation of status designations and codes can be found at https://ncnhde.natureserve.org/content/help. Data query generated on February21, 2017; source: NCNHP, Q1 January 2017. Please resubmit
your information request if more than one year elapses before project initiation as new information is continually added to the NCNHP database.
Page 2 of 5

Natural Heritage Element Occurrences, Natural Areas, and Managed Areas Within a One -mile Radius of the Project Area
M-16 Middle School
Project No. 66T-0289-0001
February 21, 2017
NCNHDE-2996
Element Occurrences Documented Within a One -mile Radius of the Project Area
Taxonomic
EO ID
Scientific Name ■
Common Name
Last
Element
Accuracy Federal
State
Global
State
Group
Managed Area Name
Owner
Owner Type
Observation
Occurrence
Status
Status
Rank
Rank
Wake County Open Space
Wake County: multiple local government
Local Government
Northeast Creek Floodplain Forest RHA
Date
Rank
Chatham County Open Space
Chatham County: multiple local government
Local Government
Kit Creek Slopes and Floodplain RHA
Dragonfly or
32043
Coryphaeschna ingens
Regal Darner
2004 -Pre
H?
5 -Very ---
Significantly
G5
S2?
Damselfly
Low
Rare
Natural
25627
Basic Mesic Forest
---
2012
C
2 -High ---
---
G3G4
S3S4
Community
(Piedmont Subtype)
Natural
13190
Mesic Mixed Hardwood
---
2013
AB
2 -High ---
---
G3G4
S4
Community
Forest (Piedmont
Subtype)
Natural
5662
Piedmont Bottomland
---
2013-03-02
C
2 -High ---
---
G2?
S2
Community
Forest (Typic Low
Subtype)
Natural
10877
Piedmont Bottomland
---
2013-03-02
B
2 -High ---
---
G2?
S2
Community
Forest (Typic Low
Subtype)
Vascular Plant
5786
Cardamine douglassii
Douglass's Bittercress
1996
C
4 -Low ---
Threatened
G5
S2
Vascular Plant
3416
Gillenia stipulata
Indian Physic
1999-05-19
C
3 -Medium ---
Threatened
G5
S2
Vascular Plant
1544
Scutellaria nervosa
Veined Skullcap
1963-05-10
H
4 -Low ---
Endangered
G5
S1
Natural Areas Documented Within a One -mile Radius of the Project Area
Site Name
Representational Rating
Collective Rating
Northeast Creek Floodplain Forest
R4 (Moderate)
C4 (Moderate)
Kit Creek Slopes and Floodplain
R5 (General)
C5 (General)
Managed Areas Documented Within a One -mile Radius of the Pro eJ a
Managed Area Name
Owner
Owner Type
NC Department of Transportation Mitigation Site
NC Department of Transportation
State
B. Everett Jordan Dam and Lake
US Army Corps of Engineers
Federal
Wake County Open Space
Wake County: multiple local government
Local Government
Northeast Creek Floodplain Forest RHA
US Army Corps of Engineers
Federal
Chatham County Open Space
Chatham County: multiple local government
Local Government
Kit Creek Slopes and Floodplain RHA
US Army Corps of Engineers
Federal
Page 3 of 5

Definitions and an explanation of status designations and codes can be found at https://ncnhde.natureserve.org/content/help. Data query generated on February 21, 2017; source: NCNHP, Q1 January 2017. Please resubmit
your information request if more than one year elapses before project initiation as new information is continually added to the NCNHP database.
Page 4 of 5

NCNHDE-2996: M-16 Middle School
February 21, 2017
Project Boundary
Buffered Project Boundary
E]
NHP Natural Area (NHNA)
Q
Managed Area (MAREA)
Page 5 of 5
1:23,288
0 0.2 0.4 0.8 mi
0 0.3 0.6 1.2 km
Sources: Esri, HERE, DeLorme, Intermap, increment P Corp., GEBCO, USGS,
FAO, NPS, NRCAN, GeoBase, ION, Kadaster NL, Ordnance Survey, Esri Japan,
METI, Esri China (Hong Kong), swisstopo, Mapmylndia, © OpenStreetMap
contributors, and the GIS User Community

6 u:s.
United States Department of the Interior F�� $ VI E
FISH AND WILDLIFE SERVICE
r 4{
Raleigh Ecological Services Field Office
551 PYLON DRIVE, SUITE F
RALEIGH, NC 27606
PHONE: [phone] FAX: [phone]
Consultation Code: 04EN2000-2017-SLI-0345
Event Code: 04EN2000-2017-E-00836
Project Name: M-16 NW Cary MS
February 28, 2017
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 et seq.).
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

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.gov/migratoI3 birds/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].
Attachment
2

United States Department of Interior
Fish and Wildlife Service
Project name: M-16 NW Cary MS
Official Species List
Provided by:
Raleigh Ecological Services Field Office
POST OFFICE BOX 33726
RALEIGH, NC 27636
[phone]
Consultation Code: 04EN2000-2017-SLI-0345
Event Code: 04EN2000-2017-E-00836
Project Type: DEVELOPMENT
Project Name: M-16 NW Cary MS
Project Description: Proposed middle school
Please Note: The FWS office may have modified the Project Name and/or Project Description, so it
may be different from what was submitted in your previous request. If the Consultation Code
matches, the FWS considers this to be the same project. Contact the office in the 'Provided by'
section of your previous Official Species list if you have any questions or concerns.
http://ecos.fws.gov/ipac, 02/28/2017 08:16 AM

United States Department of Interior
Fish and Wildlife Service
`�, Project name: M-16 NW Ca MS
Cary
Project Location Map:
w` I e-lik R
Project Coordinates: MULTIPOLYGON (((-78.90321850776674 35.8575613754167, -
78.90321850776674 35.857717893566495, -78.90693068504335 35.85770050267623, -
78.90685558319092 35.85347440323793, -78.9032292366028 35.85346570732783, -
78.90319705009462 35.857135296665525, -78.8986909389496 35.857004863936936, -
78.89861583709718 35.857457029811826, -78.90321850776674 35.8575613754167)))
Project Counties: Wake, NC
http://ecos.fws.gov/ipac, 02/28/2017 08:16 AM
2

United States Department of Interior
Fish and Wildlife Service
Project name: M-16 NW Cary MS
Endangered Species Act Species List
There are a total of 5 threatened or endangered species on your 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. Critical habitats listed under the
Has Critical Habitat column may or may not lie within your project area. See the Critical habitats within your
project area section further below for critical habitat that lies within your project. Please contact the designated FWS
office if you have questions.
Birds
Status
Has Critical Habitat
Condition(s)
Red -Cockaded woodpecker (Picoides
Endangered
borealis)
Population: Wherever found
Clams
Dwarf wedgemussel (Alasmidonta
Endangered
heterodon)
Population: Wherever found
Flowering Plants
Michaux's sumac (Rhus michauxii)
Endangered
Population: Wherever found
Insects
rusty patched bumble bee (Bombus
Endangered
affinis)
Population: Wherever found
Mammals
Northern long-eared Bat (Myotis
Threatened
septentrionalis)
Population: Wherever found
http://ecos.fws.gov/ipac, 02/28/2017 08:16 AM
3

United States Department of Interior
Fish and Wildlife Service
Project name: M-16 NW Cary MS
Critical habitats that lie within your project area
There are no critical habitats within your project area.
http://ecos.fws.gov/ipac, 02/28/2017 08:16 AM

SINCE FROEHLING & ROBERTSON, INC.
Engineering Stability Since 1881
310 Hubert Street
Raleigh, North Carolina 27603-2302
T 919.828.34411 F 919.828.5751
1881
NC License #F-0266
February 21, 2017
Renee Gledhill -Earley
Environmental Review Coordinator
NC State Historic Preservation Office
4617 Mail Service Center
Raleigh, NC 27699-4617
Re: Request for Comments
M-16 WCPSS (Proposed School Development)
130 Winding Pine Trail
Cary, Wake County, North Carolina
F&R Project: 66T-0289
Dear Ms. Gledhill -Earley:
Froehling & Robertson, Inc. (F&R) was retained by the Wake County Public School System (WCPSS)
to request your comments concerning the above -referenced project site as a proposed school
development project and its potential to affect protected Historic and Cultural Resources. Please
accept this letter as F&R's written request for comments.
The project site consists of the approximately 41.2 acres south and west of the existing Alston
Ridge Elementary School. The site consists of wooded and overgrown areas, with several
dilapidated residential and agricultural structures. The project scope includes: new middle school
construction to support a student population of 1,450 students and will include associated
grounds including paved areas and recreational areas. The project site is depicted in the attached
Figures.
F&R reviewed the available information concerning known historic properties in the area of the
project site on the NC State Historic Preservation Office GIS Website. A copy of the map is
attached. Properties listed on the National Register (NR) were not identified on or adjacent to the
project site.
However, a historic resource was identified within 1,000 feet of the project site. One property was
identified on the Surveyed Only List (SO) (CH0249 Buck & Myrtle High House) approximately 800
feet northwest of the project site. Please refer to the attached Figures for site location and
boundaries, as well as historic resources mapped using the SHPO GIS Service.
Corporate HQ: 3015 Dumbarton Road Richmond, Virginia 23228 T 804.264.2701 F 804.264.1202 www.fandr.com
VIRGINIA a NORTH CAROLINA • SOUTH CAROLINA • MARYLAND • DISTRICT OF COLUMBIA
A Minority -Owned Business

F&R requests your comments as to the potential effect of the project on any other properties
listed on the NR, the SL for the NR, or potentially eligible for listing on the NR.
Thank you for your assistance with this request. If you have questions, or if we can be of additional
service, please contact F&R at [phone].
Respectfully Submitted,
FROEHLING & ROBERTSON, INC
Paul M. Hughes
Environmental Scientist
Attachments: Figure 1: Property Location Map
Figure 2: Property Topographic Map
Figure 3: Aerial Site Plan
Figure 4: SHPO GIS Map
Figure 5: Surveyed Property Information
Site Photographs
WCP55 M-16 Development
F&R Project 66T-0289-0001 2 February 21, 2017

at the Dark
,v,.
Project Study Aston Ridge
Area " Elam-entaEy School
tt e Par ti
Fr
P
SITE VICINITY MAP North
FROEHLING & ROBERTSON, INC. Client: Wake County Public School System
FxrAF ENGINEERING • ENVIRONMENTAL* GEOTECHNICAL Promect: M-16 NW Cary Middle School
gCR 310 Hubert Street Location: Wake County, North Carolina
r Raleigh, North Carolina 27603-2302 1 USA F&R Project No: 66T-0289-0001
aa, Source: Google Maps
T 919.828.34411 F 919.828.5751 Date: February 2017 Scale Not Known Figure #1

\j
4,J'
� .1- � - ':� ��� � _ I _ i �"'`�'� 11 j�'` •y`� I`�+ III
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FROEHLING & ROBERTSON, INC. Client: Wake County Public School System
ENGINEERING • ENVIRONMENTAL • GEOTECHNICAL Project: M-16 NW CarV Middle School
FO Location: Wake County, North Carolina
QC 310 Hubert Street F&R Project No: 66T-0289-0001
Raleigh, North Carolina 27603-2302 1 USA Source: "Green Level, NC" dated 1993
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FROEHLING & ROBERTSON, INC. Client: Wake Count V Public School SVstem
FxrA ENGINEERING e ENVIRONMENTALs GEOTECHNICAL Proiect: M-16 NW Cary Middle School
gCR 310 Hubert Street Location: Wake County, North Carolina
Raleigh, North Carolina 27603-2302 1 USA F&R Project No: I 66T-0289-0001 -
Source: I NCSHPO GIS Web Service
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FROEHLING & ROBERTSON, INC. Client: Wake Count V Public School SVstem
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gCR 310 Hubert Street Location: Wake County, North Carolina
Raleigh, North Carolina 27603-2302 1 USA F&R Project No: I 66T-0289-0001 -
Source: I NCSHPO GIS Web Service
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FROEHLING & ROBERTSON, INC. Client: Wake Count V Public School SVstem
FxrA ENGINEERING e ENVIRONMENTALs GEOTECHNICAL Proiect: M-16 NW Cary Middle School
gCR 310 Hubert Street Location: Wake County, North Carolina
Raleigh, North Carolina 27603-2302 1 USA F&R Project No: I 66T-0289-0001 -
Source: I NCSHPO GIS Web Service
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FROEHLING & ROBERTSON, INC. Client: Wake County Public School System
Fx E ENGINEERING • ENVIRONMENTAL • GEOTECHNICAL Project: M-16 NW CarV Middle School
Q Location: Wake County, North Carolina
QC 310 Hubert Street F&R Project No: 66T-0289-0001
Raleigh, North Carolina 27603-2302 1 USA Source: NCSHPO GIS Web Service
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SURVEYED PROPERTY INFORMATION North 4
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FROEHLING & ROBERTSON, INC.
ENGINEERING • ENVIRONMENTAL* GEOTECHNICAL
310 Hubert Street
Raleigh, North Carolina 27603-2302 I USA
T 919.828.34411 F 919.828.5751
Client: Wake County Public School System
Promect: M-16 NW Cary Middle School
Location: Wake County, North Carolina
F&R Project No: 66T-0289-0001
Source: NCSHPO GIS Web Service
Date: February 2017 Scale As Shown Figure #5

PHASE I ENVIRONMENTAL SITE ASSESSMENT
NW Cary Middle School
Wake County, North Carolina
Photograph No. 1 — General view of the residence located
on Tract 1 of the project site
Photograph No. 3 — View of the well house and one of the
sheds located just to the west of the residence on Tract 1
Photograph No. 5 — View of Tract 1 of the project site
looking north
Photograph No. 2 — View of the backside of the
residence on Tract 1 of the project site
Photograph No. 4 — View of the mobile home located
on Tract 1 of the project site
Photograph No. 6 — View of the cleared portion of Tract
2 of the project site

PHASE I ENVIRONMENTAL SITE ASSESSMENT
NW Cary Middle School
Wake County, North Carolina
Photograph No. 7 — View of the gravel access road on the
southern portion of the project site looking north
Photograph No. 9 — View of debris located outside of the
two-story shed
Photograph No. 11 — View of the pond located on the
eastern portion of Tract 1 on the project site
Photograph No. 8 — View of the two-story shed
located on the western portion of Tract 1
Photograph No. 10 —View of an empty 30 gallon
drum located just outside of the shed
J
Photograph No. 12 — View of the pond located on the
southern portion of Tract 1 on the project site

PHASE I ENVIRONMENTAL SITE ASSESSMENT
NW Cary Middle School
Wake County, North Carolina
Photograph No. 13 — View of debris pile located near the
residence on Tract 1 of the project site
Photograph No. 15 — View of the shed located on Tract 2
of the project site
Photograph No. 17 — View of the pole -mounted
transformer located on the project site
Photograph No. 14 — View of the residence located on
Tract 2 of the project site
Photograph No. 16 — View of the debris within the shed
on Tract 2 of the site
Photograph No. 18 — View looking southeast from the
project site; the land is being developed for res. use

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C7 z m tion ti�,.����, CLH DESIGN P.A. SKINNER
Alston Ridge Middle School ��G A LAMM
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Phone: [phone] www.slharch.com 702 W Broad St 301 Glenwood Ave
0. IFax:C-10619) 319-7516 Wilson.PO Box 669 NC 27694 RaidgK NC Suite7603
130 W i n d i n g Pine Trail , Cary, N C J ���,' PE: C-1595 F 252-291-1070 F 819 863-9980
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PKINI`JER
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Cary, North Carolina 27518
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Wilson, NC 27894
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3€51 Glenwood Ave
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Ralcigh, NC 276(53
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Suite 120 _
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�'AG �`; Phone: [phone] www.slharoh.eorn 702 w Broad St 301 Glenwood Ave
N :;tic °• Hear ��`: Fax: [phone] B© Box 669 Suite 270
� 9 130 W i n d i n Pine Trail Cary,N C °�
Wilson, 1-412 T�Ci91-C 2763
' , r LA: C-106 T 252-291-4127 T 919-215-2248
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C7 z m - - do ,..� -- CLH DESIGN P.A.INI`JER
7 -Alston Ridge Middle School ��, A �.; L,�► I
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www.siharoh.eorn 702 W Broad St 301 Glenwood Ave
Fax: [phone] P© Box 669 Suite 2713
�I LA: C-106 Wilson, NC 27894 Raleigh, NC 27603
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130 Winding Pine Trail Cary NC PE: C-1595 T 252-291-4127 T 919-215-2248
7 7 F 252-291-1070 F 919-863-9980