20170317 Ver 1_More Info Received - Email_20170502

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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
148
S2 -
Choose one
S3 -
Choose one
-
S4 -
Choose one
-
S5 -
Choose one
-
S6 -
Choose one
-
3h. Total stream and tributary impacts
148
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
8,930
5,413
B2 -
Yes/No
B3 -
Yes/No
B4 -
Yes/No
B5 -
Yes/No
B6 -
Yes/No
6h. Total Buffer Impacts:
8,930
5,413
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 !
05-02-2017
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

Strickland, Bev
From: Elias Ruhl <[e-mail]>
Sent: Tuesday, May 02, 2017 5:21 PM
To: Norton, April R
Cc: Homewood, Sue
Subject: RE: Additional Information Request for PCN Application 20170317
Attachments: WCPSS M-16 PCN -updated 5-2-17.pdf, C-6 Impact Map_5-2-17.pdf
April,
Thank you for pointing that out. Attached is the revised PCN form with updated impact numbers as well as the revised
impact map (C-6) showing the final impacts at the stream crossing, redesigned per your comments. Please let me know
if you have any questions or require any additional revisions.
Thanks!
Elias N. Ruhl
Environmental Department Manager
FROEHLING & ROBERTSON, INC.
310 Hubert Street Raleigh, NC 27603 1 USA
T 919.719.1973 1 F 919.828.5751 1 M 919.630.1705
www.FandR.com
From: Norton, April R [mailto:[e-mail]]
Sent: Tuesday, May 2, 2017 8:54 AM
To: Elias Ruhl <[e-mail]>
Cc: Homewood, Sue <[e-mail]>
Subject: RE: Additional Information Request for PCN Application 20170317
Thank you.
From briefly reviewing Impact Map 94 (C-6) it appears that the impacts have changed. If the impacts have changed,
please resubmit the PCN form with the correct impacts (I only need the applicable PCN form pages, not the entire
package).
Thanks again,
April
From: Elias Ruhl [mailto:[e-mail]]
Sent: Monday, May 01, 2017 3:00 PM
To: Norton, April R <[e-mail]>
Cc: Homewood, Sue <[e-mail]>
Subject: RE: Additional Information Request for PCN Application 20170317
April,
Sorry for the delay and thanks for your patience. The two box culverts have been redesigned with one primary 6'Hx4'W
culvert for the base flow of the 4' wide stream, and one 4'Hx6'W culvert elevated to bank flow for larger storm events.
Cross sections have been included for the box culverts in sheet C07.24, including the amount the primary culvert will be
buried, and the length of the culverts.

Please see the attached drawings detailing these changes. Additionally, the construction sequence has been added to
map C-6.
Please let me know if you need any additional information. Thanks!
Elias N. Ruhl
Environmental Department Manager
FROEHLING & ROBERTSON, INC.
310 Hubert Street Raleigh, NC 27603 1 USA
T 919.719.1973 1 F 919.828.5751 1 M 919.630.1705
www.FandR.com
From: Norton, April R[mailto:[e-mail]]
Sent: Friday, April 28, 2017 2:18 PM
To: Elias Ruhl <[e-mail]>
Cc: Homewood, Sue <[e-mail]>
Subject: RE: Additional Information Request for PCN Application 20170317
Hi Eli,
If a response is not available by Wednesday of next week, I will have to place the application on hold.
Thanks,
April
From: Elias Ruhl [mailto:[e-mail]]
Sent: Tuesday, April 18, 2017 5:19 PM
To: Norton, April R <[e-mail]>
Cc: Homewood, Sue <[e-mail]>
Subject: RE: Additional Information Request for PCN Application 20170317
April,
Thanks for sending. I am working with the project engineer on a response and will send it to you as soon as I can.
Eli
Elias N. Ruhl
Environmental Services Manager
FROEHLING & ROBERTSON, INC.
310 Hubert Street Raleigh, NC 27603 1 USA
T 919.719.1973 1 F 919.828.5751 1 M 919.630.1705
www.FandR.com
From: Norton, April R[mailto:[e-mail]]
Sent: Tuesday, April 18, 2017 2:55 PM
To: Elias Ruhl <[e-mail]>
Cc: Homewood, Sue <[e-mail]>
Subject: Additional Information Request for PCN Application 20170317

Elias,
I have reviewed the PCN application for Northwest Cary Middle School. The PCN states that the stream is 4' wide and
the two culverts that are used are 5'H x 6'W (sheet C07.24). Could you please provide details on how the physical
integrity of the stream will be maintained above and below the culvert? Since two box culverts will be installed, the
stream should only flow through one box culvert during normal flow conditions and through the other box culvert above
bankfull conditions. The proposed floodplain benches should be installed to restore natural materials for bench stability. A
construction sequence and detail should be provided to ensure the contractor is clear on construction of these benches.
Thanks,
April
April R. Norton
Environmental Specialist
Division of Water Resources
North Carolina Department of Environmental Quality
336-776-9692 office
336-354-2284 mobile
april.norton(�a�ncdenr. gov
Winston-Salem Regional Office
450 W. Hanes Mill Road, Suite 300
Winston-Salem, NC 27105
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.
The content of this email is the confidential property of Froehling & Robertson, Inc. (F&R) and should not be copied, modified, retransmitted, or used for any
purpose except with F&R's written authorization. If you are not the intended recipient, please delete all copies and notify the sender immediately.
The content of this email is the confidential property of Froehling & Robertson, Inc. (F&R) and should not be copied, modified, retransmitted, or used for any
purpose except with F&R's written authorization. If you are not the intended recipient, please delete all copies and notify the sender immediately.
The content of this email is the confidential property of Froehling & Robertson, Inc. (F&R) and should not be copied, modified, retransmitted, or used for any
purpose except with F&R's written authorization. If you are not the intended recipient, please delete all copies and notify the sender immediately.

IMPACT LEGEND
TYPE
TION
ZONE '2'
DE LINEA
JORDAN BUFFER
CH=
ZONE '1'
WL=
(JB Z1)
-
JORDAN BUFFER
0.12 AC
ZONE '2'
-
(JB Z2)
0.16 AC
WETLAND
-
(WL)
1 0.01 AC
STREAM CHANNEL
4 LF
(CH)
Flag ID
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 PROPOSED 6'Hx4'W AND 3'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=
Z248 S.F. (0.05 AC)
IMPACT
LOCATION
TYPE SQUARE FT.
ACRES
LINEAR FT.
CH ONLY
STREAM IMPACT
WIDTH
IMPACT AREA #4
JB Z1 8,930 S.F.
0.21 AC
-
-
JB Z2 5,413 S.F.
0.12 AC
-
-
W1 7,009 S.F.
0.16 AC
-
-
CH 585 S.F.
1 0.01 AC
148 LF
4 LF
TOTAL WETLAND
IMPACT AREA (WL)=
Z309 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
2,748 S.F. (0.06 AC) 4,272 S.F. (0.10 AC) GRADING=
3,136 S.F. (0.07 AC
80008 i ml
WF 800071,1, I I I\
I
I� 80009 \\ \\
WF 80006 \ \ STREAM \\ \\
8000 \ � \\ �#2000 \ I
\ I I
\ 1 I 100' OF
\ WF VOON o I I TRANSI
I BUFF
WF 80004 hi
� Inti
WF 8000,
u �LA1VD
/HEAD
'�./\WALL
WF 80 2 ::::':':':w::
'.:'.. •
TOTAL ZONE 1
GRAPHIC SCALE IMPACT AREA=
4,658 S.F. (0.11 AC)
20 40 80 1
IMPACT MAP #4 ( IN FEET )
1 inch = 40 ft.
M-16 MIDDLE SCHOOL
TOWN OF CARY
DATE 5/2/17
PROJECT NO: 15.188
C-6 IMPACT MAP #4
ZONE 1 AREA
IMPACTED BY ROAD
GRADING=
3,226 S.F. (0.07 AC)
700031
TOTAL ZONE 2
IMPACT AREA=
Z665 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]
SS ---
j WF 80013END
-�I
WF 70002
I I I
WETLAND POINTS'
a ......::
WF
.... .
7040 � ......v .......... .
I �.
Flag ID
Northing Easting
WF 70001BEG
766969.9666' 2029174.2888'
WF 70002
766986.1087' 2029192.7314'
WF 70003
766983.1748' 2029263.7134
TOTAL WETLAND
IMPACT AREA (WL)=4,487
WF 70004
766938.0704' 2029262.5486'
S.F. (0.10 AC)
WF 70005
766922.0030' 2029252.8051'
WF 70006
766907.0745' 2029227.4210'008
WETLAND AREA
IM
I /
WF 70007
766906.5785' 2029204.1468'
IMPACTED BY ROAD
f/ IAIETLAND I l
WF 70008END
766935.5876' 2029189.3495'
GRADING=
I "A i
#70,000
WF 80001BEG
767016.8654' 2029173.5372'
4,203 S.F. (0.10 AC)
WF 70b
WF 80002
767042.1376' 2029167.2114'/
Nll� 70007
/
WF 80003
767091.9893' 2029168.1013'76
WF 80004
767116.3579' 2029162.3948'
TOTAL STREAM IMPACT
_
AREA = 583 S.F.
/
WF 80005
767144.3741' 2029171.7156'
(0.01 AC), 147 L.F.
WF 80006
767150.6012' 2029197.4575'
WF 80007
767190.8863' 2029197.2303'
AM AREA
I
I
WF 80008
767192.4897' 2029212.5077'
CTED BY ROAD
[GRADING
I
80009
767171.7520' 2029213.5946'
= 402 S.F.WF
WF 80010
767132.9226' 2029223.6435'
AC)
WF 80011
767100.6373' 2029228.2000'
/ I
WF 80012
767043.8753' 2029250.3990'
WF 80013END
767023.7203' 2029245.5453'
TOTAL ZONE 1
GRAPHIC SCALE IMPACT AREA=
4,658 S.F. (0.11 AC)
20 40 80 1
IMPACT MAP #4 ( IN FEET )
1 inch = 40 ft.
M-16 MIDDLE SCHOOL
TOWN OF CARY
DATE 5/2/17
PROJECT NO: 15.188
C-6 IMPACT MAP #4
ZONE 1 AREA
IMPACTED BY ROAD
GRADING=
3,226 S.F. (0.07 AC)
700031
TOTAL ZONE 2
IMPACT AREA=
Z665 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]