20130046 Ver 1_Stormwater Info_20130403

EVANS ENGINEERING, INC.
ENGINEERS, PLANNERS, SURVEYORS
4609 DUNDAS DRIVE
GREENSBORO, NORTH CAROLINA 27407
PHONE: [phone] FAX: [phone]
DATE: )4- /' 13
CLIENT: 823
PROJECT: 16
PAL616011W.. Z7699-/6&'O
From: Itivr►i AW 1) .
A.M.
P.M.
TO BE DELIVERED [ ] TO BE MAILED (t/] TO BE PICKED UP [ ]
WORLDWIDE EXPRESS [ ] FEDERAL EXPRESS [ ]
COMMENTS:
C/ovd

a rC6VER
North Carolina Department of Environment and Natural- Resources
Division of Water quality
Pat McCrory Charles Wakild, P. E.• John E. Skvarla, III
Governor Director Secretary
March 7,2013
DWQ# 13 -0046
Guilford County
Mr. Herbert Parks
7CCC, LLC
7B Corporate Center Court
Greensboro, North Carolina 27408
APPROVAL of 401 Water Quality Certification with Additional Conditioh5
Dear Mr. Parks:
You have.our approval, in accordance with the attached conditions, to place fill and impact 130 linear
I feet of jurisdictional stream and 0.22 acres of wetlands to extend Bedstone Dr for the Griffin Mill
Subdivision Phase 11 for in Greensboro, NC in Guilford County, as described in your. application received
by the Division on January 18, 2613 and subsequent information submitted February 1, 2013, February
18, 2013 and February 22, 2103. After reviewing your application, we have determined that this fill is
i covered by General Water Quality Certification .Number.3890, which can be viewed on our web- site at
http:// h2o .enr.state.nc.ut /ncwetiands /rd wetlands_tertifications.htm. This Certification allows you to
i use Nationwide Permit Number 29 when it is issued by the U.S. Army Corps of Engineers.. In addition,
you -should secure any other applicable federal, state or local. permits before you proceed with your
project, including_ (but not limited to) those required by Sediment and Erosion Control (including trout
buffer • waivers as necessary), Non-Discharge, State Stormwater, and Water Supply Watershed
regulations. Also, this approval will expire when -the accompanying 404 permits expire unless otherwise
specified in the General Certification.
This approval is valid only for the purpose and design that you have described in your application. If you
change your project, you must notify us in writing, and you may be required to send us a new application
for a new certification. If the property is sold, the new owner must be given a copy of the Certification
and approval letter and Is thereby responsible for complying with all conditions. If total wetland fill for
this project (now or in the €uture)'exceeds one acre, or total fill to perennial streams equals or exceeds
150 linear feet, additional compensatory mitigation may be required as described in. 15A NCAC 2H .0506,
(h). For this approval to be valid, you must follow the conditions listed in the attached certification, as
well as the additional conditions listed below:
North Carolina DWon of Water c arq, mnstomslem •Reglorrai office
Location: 585 Waughtown St. Winston - Salem, North Cpronna 27107 • •
Phone: 336-771,50001 FAX [phone] Customer Service:1- 877 -EaU48
Internet www.ncwaWqually.org,
An Equpl bpporhmily 1 Afflrrndw Action Employer
PV Maduratty ne I R
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7CCC, LLC
DWQ# 13 -0046
March 7, 2013
Page 2 of 5
1. The following impacts are hereby approved as long as all other specific and general conditions of
this Certification are met. No other impacts, including incidental impacts, are approved:
Stream sites
Stream
Impact length -
S1
Unnamed tributary to Reedy Fork
130 linear feet permanent impact
Total
8 linear feet of temporary impact
Total
130 linear feet permanent impact
8 linear feet of temporary impact
Wetland Impacts
Identifier
Type of impact
Impact
'Site 1
Fill
0.22 acres temporary impact
Total
0.22 acres temporary impact
2. The proposed project must comply Authorization Certificate issued by the City of Greensboro as
required per their local water supply ordinance approved by the N.G. Environmental Management
Commission (EMC) as required .under the Jordan Lake Water Supply Watershed: Protection and
Maintenance of Riparian Areas (Jordan Buffer Rule) 15A NCAC 02B .0267.
3. The outside buffer, wetland or water boundary and along the construction corridor within these
boundaries approved under this authorization shall be clearly marked with orange warning fencing
(or similar high visibility material) for the areas that have been approved to infringe within the
buffer, wetland -or water prior to any land disturbing activities to ensure compliance with 15A NCAC
2B.0267 and GC 3890.
4. The Permittee shall stake the limits of disturbance at the stream crossing site and conduct a
preconstructlon meeting with the construction contractor prior to disturbance of the impact area.
The Division shall be notified of the meeting two'weeks prior to its scheduled date.
5. You are required to provide one copy of the approved SMP, including plan details on full -sized plan sheets,
with proof of the City of Greensboro's approval. The approved SW must be submitted to the Division's
Webscape Unit (1650 Mail Service Center, Raleigh, NC 27699 -1650) be ore an impacts authorized in this
certification occur. The following requirements also apply:
• The approved SMP must be constructed and operational before any permanent building or other structure
is occupied at the site.
• The approved SMP as well as drainage patterns must be maintained in perpetuity,
• The SUP may not be' modified without prior written authorization from crick hereto enter text A copy of the
approval letter and the modified SMP must be submitted to the DWQ Webscape Unit prior to the
commencement of the modifications.
i
F
e
i'

I
7CCC, LLC
DWQ# 13 -0046
March 7, 2013
Page 3of5 -
6. Upon finishing the project, the Applicant shall fill out and return • the enclosed "Certificate of
Completion" to notify NCDWQ when .all work included in the 401 Certification has been completed.
This certificate should be returned to the -Winston-Salem Regional Office of the NCDWQ at the
address listed on the form.
If you do not accept any of the conditions of this certification, you may ask for an adjudicatory hearing.
You must act within 60 days of the state that you receive this letter. To ask for hearing, send a writtery
petition which conforms to Chapter 1508 of 'the North Carolina General Statutes to the Office of
Administrative Hearings, 6714 Mail Service Center, Raleigh,- N.C: 276996714. - This certification and its
conditions are final and binding unless you ask for a hearing.
This letter completes the review of the Division of Water Quality under Section 401 of the Clean Water
Act. If you have any questions, please contact Sipe Homewood in the DWQ Winston -Salem Regional
Office at 336771 -4964 or at sue.homewood @ncdenr.gov.
Sincerely,
Charles Wakild, P.E., Director
i *Division of Water Quality
cc: Andy Williams, U. S. Army Corps of Engineers, Raleigh Regulatory Field Office (via email)
Virginia Spillman, City of Greensboro (via email)
Anthony Lester, Evans Engineering Inc (via email)
Brad Luckey, ECS LLP, (via email)
DWQ Wbscape Unit
x
DWQ Winston -Salem Regional Office
LZ
t

* * * ** LANDSCAPE APPROVAL AND INSPECTION * * * **
❑ A LANDSCAPE PLAN (which depicts the plant types and locations) Must Be
Submitted To The Planning Department For Review And Approval On or Before
(90 Days).
❑ THE Required LANDSCAPE PLANT MATERIAL Must Be Installed And Inspected
Prior. To Receiving A Certificate of Occupancy.
To request an inspection contact Landscape /Watershed Planner at 336 - 373 -2918
* * * ** TREE PRESERVATION APPROVAL AND INSPECTION * * * **
• The Required TREE PROTECTION FENCING Must Be Installed and Inspected
Prior to Land Disturbance.
To request a pre— construction meeting contact the Urban Forester at 336- 373 -2150
• THE Required REFORESTATION AREA Must Be Installed And Inspected Prior 'To
Receiving A Certificate of Occupancy.
* * * ** ZONING APPROVAL AND INSPECTION * * * **
❑ The Required Parking Spaces And Drive Aisles Must Be PAVED And
STRIPED Prior To Receiving a Certificate of Occupancy.
❑ Tank Permit required*
(Contact Zoning Office Office at 336 - 373 -2630)
❑ Sign Permit required*
(Contact Zoning Office at 336 - 373- 2630).
* * * ** WATERSHED APPROVAL AND INSPECTION * * * **
• A FINAL PLAT Must Be Recorded In The Guilford County Register Of Deeds
Prior To Receiving A Certificate of Occupancy.
• Construction of the WATER QUALITY DEVICE (POND & BIORETENTION) Must Be
Complete and the "Engineer's Certification of Completion" Seca To The Planning
Department Prior To Receiving A Certificate of Occupancy.
ALLOCATION CHART FOR WET DETENTION POND #1
ON -SITE
DRAINAGE AREA TO POND #1
7.88 ACRES
OFF -SITE
DRAINAGE AREA TO POND #1
1.07 ACRES
TOTAL DRAINAGE AREA TO POND #1
8.95 ACRES
ON -SITE
BUA TO POND #1
3.05 ACRES
OFF -SITE
BUA TO POND #1
0.00 ACRES
TOTAL BUA TO POND #1
3.05 ACRES
State
Sanitary Sewer System Permit Required.
❑
MAXIMUM
BUA TO WET DETENTION POND #1
3.05 ACRES
* * * ** FLOODPLAIN APPROVAL * * * **
❑ Elevation Certification Required
❑ Floodplain Development Permit Required
* * * ** SOIL EROSION CONTROL * * * **
(Contact Erosion Control Officer at 336 - 373 -2158)
® Watershed Pond Construction /Surety Or Improvement Guarantee Must
Be Submitted.
* * * ** ENGINEERING CONSTRUCTION APPROVAL * * * **
(Contact Engineering Division at 336- 373 -2302)
® Utility Construction Plan Approval Required*
❑ Pavement Cut Permit May Be Required*
® Roadway Construction Plans Required*
❑ Storm Sewer System.
• Permit Required To Tie Into Storm Sewer System
• Driveway Culvert Inspection Required.
* * * ** WATER RESOURCES CONSTRUCTION APPROVAL * * * **
(Contact Resources at 336- 373 -2055)
Water System*
Greensboro City Planning Department
Mailing Address P.O. Box 3136, Greensboro, NC 27402 -3136
Office Address: 300 West Washington Street, Greensboro, NC 27402
®
State
Water Permit
Required.
❑
Outside City — Utility
Agreement And Annexation Petition Required.
Sanitary
Sewer
System*
Submit 14 copies of plans to the Planning Department for review.
®
State
Sanitary Sewer System Permit Required.
❑
Outside City — Utility
Agreement And Annexation Petition Required.
--- - -- 8
E —Mail:
*Fee required
before construction plans are released.
�ixy�I:iz�7�
JANUARY 11, 2013
* * * ** PROJECT SUMMARY * * * **
Minimum Number Of Required Parking Spaces: N/A
Total Number Of Provided Parking Spaces: N/A
Plat book and /or Deed book Reference: N/A
Street Classification (s): BEDSTONE DRIVE —LOCAL STREET
GRIFFIN'S KNOLL COURT — LOCAL STREET
Developer's Name: 7CrisKats, LLC
Address: 7B CORPORATE CENTER COURT. GREENSBORO, NC 27408
Daytime Phone Number: (336) 282 -4127
Existing Land Use: VACANT
SI C #: 0000
Stormwater Management /Watershed
Stormwater Control /Improvements(s) WET DETENTION POND AND BIOCELL
Maximum Amount of BUA Allowed Per Stormwater Control
Design: 3.05 ACRES BUA TO POND = 15.36%
0.28 ACRES BUA TO BIOCELL =1.41%
TOTAL 3.33 ACRES BUA= 16.77%
Distance to Nearest Floodway: >2,000 FT
On —site soil types(s): CkB, PoC, POE, Ppc2, PpE2
Hydrology groups(s): A, B
Amount of site to be disturbed: ±5.51 ACRES;
* * * ** FINANCIAL RESPONSIBILITY ,.ACKNOWLEDGEMENT * * * **
7CrisKats, LLC is to provide a one year
warranty to guarantee the public improvement from failure due to faulty
workmanship or materials. Once the project is complete, this individual or
corporation will be required to sign a notarized agreement, upon completion
and return of this agreement, they will receive a final acceptance letter and
the year warranty will begin. The City of Greensboro will not release bonds
or accept public Infrastructure for mrntencnce without a final inspection.
7CrisKats, LLC
Financial Responsibility -Individual or Corpora t ion Signature
ADDRESS: 7B CORPORATE CENTER COURT
GREENSBORO N.C.
27408
TELEPHONE: [phone]
CITY OF GREENSBORO
WATER RESOURCES DEPARTMENT
COLLECTION SYSTEM EXTENSION PERMIT APPROVAL
PROJECT ORIGIN: ® CITY ❑';PRIVATE
TYPE OF PROJECT: ® CITY OWNED ❑ ':PRIVATELY OWNED
❑ PORTIONS PUBLIC AND PRIVATELY OWNED
PER ARTICLE 21 OF CHAPTER 143 OF THE NOR H CAROLINA GENERAL STATUES, AS
AMENDED AND OTHER LAWS, RULES AND REGULATIONS, PERMISSION IS HEREBY
GRANTED BY THE CITY OF GREENSBORO, A DELEGATED PERMITTING AUTHORITY
APPROVED BY THE NORTH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION, FOR
THE CONSTRUCTION AND OPERATION OF THE COLLECTION SYSTEM DEPICTED ON
THESE PLANS AND THROUGHOUT THE PERMITTIN' PROCESS.
CITY OF GREENSBORO AND ITS STAFF ARE NOT RESPONSIBLE FOR ERRORS IN
DESIGN, CALCULATIONS, DRAWINGS OR STATEMENITS, OR FINDING AND CORRECTING
ANY ERRORS OR DEFICIENCIES SUBMITTED BY APPLICANTS OR THEIR CONSULTANTS,
AND DISCLAIMS ANY LIABILITY. FOR ERRORS, IN ACCORDANCE WITH NORTH CAROLINA
GENERAL STATUTE 130A -26.2. ANY PERSON WHO KNOWINGLY MAKES ANY FALSE
STATEMENT, REPRESENTATION, OR CERTIFICATION11 IN ANY APPLICATION OR DESIGN
DOCUMENTS SHALL BE GUILTY OF A CLASS 2 M..ISDEMEANOR, WHICH MAY INCLUDE A
FINE NOT TO EXCEED $10,000 PER VIOLATION.
PERMTTTEE SHALL BE RESPONSIBLE FOR ADHERENCE TO ALL CONDITIONS OF THE
CITY OF GREENSBORO WATER RESOURCES DEPAIRTMENT AS CHECKED.
❑ WASTEWATER COLLECTION SYSTEM EXTENSION MASTER PERMIT
(PUBLIC)
❑ INDIVIDUAL WASTEWATER COLLECTION SYSTEM EXTENSION PERMIT
(PRIVATE)
ANY SIGNIFICANT CHANGES (SIZE, TYPE, (CONNECTIONS, LENGTH, ALIGNMENT,
ETC.) TO THAT APPROVED ON THESE PLANS OR PERMITTING DOCUMENTS
SHALL BE REVIEWED AND APPROVED BY THE CITY OF GREENSBORO PRIOR
TO CONSTRUCTION.
APPROVED BY: CITY OF GREENSBORO
COG PERMIT NO. WRCS00 APPROVAL DATE:
COVER SHEET APPLICATION FORM (Revised July 18, 2007)
Greensboro City Planning Department
Mailing Address P.O. Box 3136, Greensboro, NC 27402 -3136
Office Address: 300 West Washington Street, Greensboro, NC 27402
If you have any questions about the process call Jimmy Person with the Planning Department at 336 - 412 -5739
PLAN TYPE: I REVIEW FEE:
Site Plans
$400 plus $20 per 1,000 sq. ft. gross floor area
Multifamily Developments
$400 plus $25 per dwelling unit
Single Family Subdivisions
$260 plus $40 per lot
Minor Revisions
$260 per lot, square footage, or dwelling unit listed below applied to any
increase.
Submit 14 copies of plans to the Planning Department for review.
Plan review takes 7 -10 working days; the Planning Department staff will contact you when your plan is ready.
WATERSHED PLAN------------------------
PROJECT SUMMARY:
Owner/Applicant: 7CrisKats, LLC
Report Comments to: ANTHONY LESTER
Telephone Number: 336 854 -8877 Fax Number: (336h_854-8876
--- - -- 8
E —Mail:
Report Comments to:
Telephone Number: Fax Number:
14
E —Mail:
Tax Ma Block Parcel #(s): PARCEL 137489, 0137392, 0137394, 0137415 -8
Total Tract Acreage: ±19.86 ACRES
Zoning District: CD -R5
Watershed Designation: GREENSBORO WCA TIERS 3 & 4 REEDY FORK WS III
Proposed Use: SINGLE FAMILY HOMES
Number of Lots: 32
Multifamily Developments: # of Units NA
T e: Apartments Townhomes Condominiums
Non — Residential Developers: Existing GFA 0 —Proposed GFA 0
Amout of Existing BUA: ±0.00 ACRES
Amount of proposed BUA: 3.33 ACRES TOTAL = 16.77%
PROJECT SUBMISSION GUIDELINES
Plans submitted to the Planning Department that do not include the items on the Design Review Application Form will
not be rewiewed, and will be returned to the contact person.
This portion of the cover steet must be filled out and signed by the person designating the site to show that he /she
has read and provided the required information to submit a plan to the Planning Department.
1 have read, understood and completed the attached pion to the best of my knowledge and ability.
Name: 041 n. && Phone: 336 - 854 -8877 Date:
v
By
SHEET INDEX
AL
SHEET TITLE
SHEET #
COVER SHEET _----- -___ -- --------- ----
-- 1
OVERALL PLAN---------------------------
- - - - -- 2
SUBDIVISION PLAN— _ --------------
— 3
UTILITY PLAN— -------- _
4
STORM DRAINAGE— --------- ___
--------
- -_ -- 5
WATERSHED PLAN------------------------
- - - - -- 6
WET DETENTION POND PLAN _-- -----
------ 7
BIOCELL PLAN— --- --- ---
--- - -- 8
DETAIL PLAN-------------------------- -
- - - -- 9
EROSION CONTROL PLAN ------- ----- — --------
14
EROSION CONTROL DETAIL PLAN -------
— _ - - -15
Date Map Revised:
Revisions
By
02 -04 -13
AL
02 -14 -13
AL
* * * ** TRANSPORTATION APPROVAL * * * **
(Contact GDOT at 336- 373 —GDOT)
Driveway Permit:
• City of Greensboro Driveway Permit Required
• N.C. Department Of Transportation Driveway Permit Required.
Driveway Permit Issued? YES
NO, DO NOT ISSUE BUILDING PERMIT
N/A
* * * ** SUBDIVISION APPROVAL * * * **
® A FINAL PLAT Must Be Recorded In The Guilford County Register
Of Deeds Prior To Issuance Of A Building Permit.
Final Plat Recorded?
YES
NO, DO NOT ISSUE PERMIT.
N/A
VICINITY MAP NO SCALE
The items checked below have not been included on this plan being submitted for
Technical Review Committee review and approval. It is understood that additional
reviews in the development process (including constructiion and utility plan review,
as indicated below) could affect the amount of development possible on this site
and the costs associated with this development:
❑ Sidewalk, Road Widening and Turn Lanes
Required sidewalk along existing streets, required road widening, and /or required
turn lanes have not been depicted and their design has not been reviewed.
I understand that the reviews and approval of said improvements will occur during
the construction and utility plan process.
❑ Water and Sanitary Sewer
Full design information for the proposed water and sanitary sewer system
has not been depicted and their design has not been reviewed. I understand
that the review and approval of said improvements will occur during the
construction and utility plan review process.
❑ BMP
Full design information for the proposed water quality /quantity device (BMP)
has not been depicted and its design has not been reviewed. I understand
that the review and approval of said improvements will occur during the
construction and utility plan review process.
❑ STORM SEWER
Full design information for the storm sewer system and /or grading has not
been depicted and its design has not been reviewed. I understand that the
review and approval of said improvements will occur during the construction
and utility plan review process.
Individual Responsible for Preparation of the Plan Signature / Seal
Watershed Plan Approved By The Technical Review Committee
(TRC) on ,
and /or Site Plan, ISubdivisionj Group Development,
Approved by eie , on
a/as Z/3 ( 2013—ON1 )
TRACKING NUMBER
NOTE: TRC approval represents the
maximum possible development of the site.
Additional reviews in the development
process (including Construction Plan Review)
could reduce the amount of development
possible on this site.
NOTE® Conformance with this approved
plan is your responsibility; and any
change in land use, lot lines, building
location, parking, drives utility lines,
landscaping, etc. MUST be resubmitted to
the Planning Department to eliminate
delays in the review process.
Clerk TRC (Date)
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DB 2951, PG 665 z
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VEGETATION INSIDE 20'x200' -T ,.ZONING RS-40
SIGHT MANGLES TO BE
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-10
HEIGHT OF 30* OR LESS
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CITY(OF GREENSBORO
ZIN PARCEL # 0089341
SIF PIN- 7857589523
450E ZONING RS-40
�30
40
ZONING INFORMATION:
V,
15k
EXISTING ZONING CLASSIFICATION: CD—R5
MINIMUM LOT SIZE=7000 SF (SEE NOTE BELOW) 9•6�4 S�
MINIMUM LOT WIDTH=50 FT. 'U& 'A 32
=58 FT. (CORNER LOT) MON\
ENTS 1 11 9F A
SETBACKS: v\ 5.98 AC • V \\x 43
N
FRONT=20 FT. FROM ROW T11 11
SIDE STREEET=15 FT.
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25 FT. FROM CENTERLINE
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INTERIOR SIDE=5 FT. us
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REAR=20 FT. (SEE NOTE BELOW) A
G MILL-
MAXIMUM BUILDING HEIGHT=50 FEET (3 STORIES) RAIN ��� I i /y\ \ / /' \ �\ �� \ \� �,
PHASE 1, SECTION 1
MAXIMUM BUILDING COVERAGE=40% OF LOT to P.B.164, PG. 147
CONDITIONS: MIT Ljt4r
D B 6284, PG. 785 7*
A!G3e-
1. USES. SINGLE FAMILY DETACHED HOMES NOT TO EXCEED 38 UNITS.
1114
(ou
LOT REDUCTIONS WHEN ADJOINING OPEN SPACE: (REFERENCE LDO SECTION 30-7-3.2(L))
-7
x;
AIC OFFSITE
1) CONVENTIONAL SINGLE—FAMILY DEVELOPMENTS WITH PUBLIC SEWER SERVICE THAT ABUT A DEDICATED AREA DRAINING, .
PUBLIC DRAINAGEWAY AND OPEN SPACE AREA OR COMMON ELEMENTS OPEN SPACE THAT IS AT LEAST 30
CTI
0
9
FOE
FEET IN WIDTH MAY BE DEVELOPED WITH REDUCED LOT SIZE AND REAR SETBACK REQUIREMENTS AS
PROVIDED BELOW:
GREENSBORO POLICE.:
A. THE MINIMUM REQUIRED LOT SIZE MAY BE REDUCED IN AREA TO 40% BELOW THE BASE CLUB
'T
i I 1LA'T E
SINGLE—FAMILY REQUIREMENT TO A MINIMUM OF 5,000 SQUARE FEET WHEN ABUTTING OPEN SPACE. DB 2425, PG. 345
N42* 9 1AAKI '7nKI1KIr_' 0Q_40
B. REAR SETBACKS MAY BE REDUCED TO 15 FEET WHEN ABUTTING OPEN SPACE.
C. SIDE SETBACKS MAY BE REDUCED TO 3 FEET WHEN ABUTTING OPEN SPACE.
2) A NOTE MUST BE PLACES ON THE FINAL PLAT STATING: "LOTS HAVE BEEN REDUCED IN SIZE IN
ACCORDANCE WITH SEC. 30-7-3.2(L), BUT ALL OTHER DIMENSIONAL REQUIREMENTS OF THE CITY OF
GREENSBORO LAND ORDINANCE APPLY."
LOT #37 IS A FLAG LOT AND MUST BE APPROVED
-BY TRC AS A TYPE 11 MODIFICATION. THE
JUSTIFICATION FOR THIS APPROVAL PER THE
,DEVELOPMENT ORDINANCE IS TWOFOLD:
1) THIS FLAG LOT IS NECESSARY IN ORDER TO
HELP PROVIDE REASONABLE USE OF THIS TRACT
DUE TO SEVERE TOPOGRAPHY.
2) THIS FLAG LOT ALSO PROVIDES GREATER
PROTECTION OF NATURAL RESOURCE AREAS.
LEGEND 1
0 - EXISTING IRON PIPE
0 - NEW IRON PIPE
■ - EXISTING CONCRETE MONUMENT
- COMPUTED POINT
- UTILITY POLE
- OVERHEAD UTILITY
o - TELEPHONE PEDESTAL
-0 - FIBEROPTIC MARKER
R/W RIGHT OF WAY
DB DEED BOOK
PB PLAT BOOK
PG PAGE
III FIBEROPTIC BOX
RCP - REINFORCED CONCRETE PIPE
MH - MANHOLE
- EXISTING FIRE HYDRANT
0 - MAIL BOX
NEI
- WATER METER
- GUY WIRE
- WOOD RAIL FENCE
ZONE 3
ZONE 2
am.
ZONE 1
go
WIDTH OF STREAM
ZONE 1
ZONE 2
ZONE 3
50'
26,
30
FROM TOB TO TOB
30'
26
50'
GRADING &
GRADING &
WOSTURBED
UNDISTURBED
GRADING &
GRADING &
REVEGETATION
REVEGETATION
WFFER
BUFFER
REVEGETATION
REVEGETATION
ALLOWED.
ALLOWED.
ALLOWED.
ALLOWED.
NO NEW BOA
NO NEW BUA
NO NEW BUA
140 NEW BUA
ALLOWED
ALLOWED
ALLOWED
ALLOWED
STREAM BUFFER DETAIL
N.T.S.
46 °:14' AC OFFSITE:,
AREA DRAINING
%K TO''. HIS POINT
.4i 01
%
LOT 12 SECTION Cb Cr
THREE GREAT OAKS
PB 46, PG. 75
ZONiJNG RS-40
DENSITY LIMITS:
14.68 AC OFFSITE
AREA DRAINING
TO THIS POINT
GREENSBORO WATERSHED, WS III WCA (HIGH—DENSITY OPTION)
TIER 3: 30% BUA MAX
TIER 4: 40% BUA MAX
TIER 3 ALLOWANCE = 12.89 ACRES X 30% = 3.87 ACRES ALLOWED
TIER 3 BUA SHOWN = 2.26 ACRES
TIER 4 ALLOWANCE = 6.97 ACRES X 40% MAX = 2.79 ACRES ALLOWED
TIER 4 UNITS SHOWN = 1.07 ACRES
TOTAL ALLOWED = 6.70 ACRES
TOTAL SHOWN = 3.33 ACRES
WATERSHED CONTROL NOTES:
1. WATERSHED: GREENSBORO WCA TIERS 3 & 4—REEDY FORK WS III
2. TOTAL BUILT UPON AREA:
STREETS: 43,608 SF
LOTS: 32 @ 3,000 SF/LOT = 96,000 SF
SIDEWALKS: 5,963 SF
TOTAL = 145,571 SF (16.98%)
3. DISTANCE TO NEAREST FLOOD PLAIN: >2,000'
4. AVERAGE % SLOPE: +/— 14.9%
5. DISTURBED AREA: TIER 3: 80% MAX
TIER 4: 85% MAX
TIER 3 DISTURBANCE ALLOWED = 449,191 SF
SHOWN = 248,589 SF (44%)
TIER 4 DISTURBANCE ALLOWED = 258,071 SF
SHOWN = 57,970 SF (19%)
v
SITE DATA:
TOTAL AREA: ±19.86 ACRES
TAX MAP PARCELS: 0137489, 0137392, 0137394, 0137415-8
WATERSHED: GREENSBORO WCA TIERS 3 & 4 REEDY FORK WS III
PROPOSED ZONING: CD—R5
PROPOSED NUMBER OF LOTS: 32
AREA IN ROW= ±1.59 AC
AREA IN COMMON ELEMENTS: ±11.46 AC
AREA IN LOTS: ±6.81 AC
TOTAL PHASE 11 AREA: ±19.86 AC
100
OWNER/DEVELOPER:
7CrisKats, LLC
713 CORPORATE CENTER COURT
GREENSBORO, NC 27408
TELEPHONE: [phone]
FAX:[phone]
CONTACT: HERB PARKS
EMAIL ADDRESS: hparks0besisuites.com
GRAPHIC SCALE
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\ J
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\ \�� ` \�• \ �' \ \` \ \ o T` J / t PAF�CEL 0089341
t I�\ \ \\ \�� \ \ \ \ J ! �11> >�� t �o1 e i� I i �i + X�• ,, , • \ 7857589523
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UNNAME 7REAM PER DWO
GUILFORD COUNTY 2010 ENVIRONMENTAL
°r / ® : °' ®,. „C. _ " .•ts —a �'�- SENSITIVITY MAP
®�„ STREAM CLASS1FICATIONt WS —III
® TC/� // 4"• ,v. ®;� ` ` �• REQUIRED SEWER MAIN SEPARATION PER `
\y `� e\ . 15A NCAC 02T 3305(f) _ `�.E.I
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DENSITY LIMITS:
GREENSBORO WATERSHED, WS III WCA (HIGH – DENSITY OPTION)
TIER 3: 30% BUA MAX
TIER 4: 40% BUA MAX
TIER 3 ALLOWANCE = 12.89 ACRES X 30% = 3.87 ACRES ALLOWED
TIER 3 BUA SHOWN = 2.26 ACRES
TIER 4 ALLOWANCE = 6.97 ACRES X 40% MAX = 2.79 ACRES ALLOWED
TIER 4 UNITS SHOWN = 1.07 ACRES
TOTAL ALLOWED = 6.70 ACRES
TOTAL SHOWN = 3.33 ACRES
�;NI NO SCALE
NOTE:
1. ALL CONSTRUCTION TO BE TO THE CITY OF
GREENSBORO & NCDENR STANDARDS AND
SPECIFICATIONS.
2. CONTRACTOR TO VERIFY DEPTH AND LOCATION
OF ALL EXISTING UTILITIES PRIOR TO CONSTRUCTION.
3. CONTRACTOR TO COMPLY WITH THE NEW
O.S.H.A. REGULATIONS CONCERNING TRENCHING
FOR INSTALLATION OF UTILITIES.
4. NO SUBSURFACE INVESTIGATION CONDUCTED
BY EVANS ENGINEERING, INC.
5. ANY EXISTING SIDEWALK THAT IS EITHER
DAMAGED OR NON —ADA— COMPLIANT TO BE
REPLACED AS PART OF THIS PROJECT.
U&ITY NO77CE
THE UNDERGROUND UTILITIES SHOWN HAKE BEEN LOCATED FROM FIELD
SURVEY INFORMA770N, RECORDED EASEMENTS, A ND EXIS77NG DRAWINGS.
THE SURVEYOR MAKES NO GUARANTEES THAT THE UNDERGROUND
U77LI77ES SHOWN ARE IN THE EXACT LOCA77ON /ND /CA TED ALTHOUGH HE
DOES CER77FY 7HA T THEY ARE L OCA 7FD AS ACCURA TEL Y AS POSSIBLE FROM
THE INFORMA77ON AVAILABLE. THE SURVEYOR HAS NOT PHYS /CALLY
LOCA7FD UNDERGROUND U77LI7ZES.
NOTE:
IN THE PROCESS OF OBTAINING ALL OF THE NECESSARY
APPROVALS FROM THE STATE AND CORPS FOR THE
STREAM CROSSINGS AND WETLAND DISTURBANCE.
SITE DATA:
TOTAL AREA: ±19.86 ACRES
TAX MAP PARCELS: 0137489, 0137392, 0137394, 0137415 -8
WATERSHED: GREENSBORO WCA TIERS 3 & 4 REEDY FORK WS III
PROPOSED ZONING: CD –R5
PROPOSED NUMBER OF LOTS: 32
AREA IN ROW= ±1.59 AC
AREA IN COMMON ELEMENTS: ±11.46 AC
AREA IN LOTS: ±6.81 AC
TOTAL PHASE II AREA: ±19.86 AC
5
GRAPHIC SCALE
0 0 25 50 100 Ze
WATERSHED CONTROL NOTES:
1. WATERSHED: GREENSBORO WCA TIERS 3 & 4 –REEDY FORK WS III
2. TOTAL BUILT UPON AREA:
STREETS: 43,608 SF
LOTS: 32 @ 3,000 SF /LOT = 96,000 SF
SIDEWALKS: 5,963 SF
TOTAL = 145,571 SF (16.98 %)
3. DISTANCE TO NEAREST FLOOD PLAIN: >2,000'
4. AVERAGE % SLOPE: +/– 14.9% OWNER /DEVELOPER:
5. DISTURBED AREA: TIER 3: 80% MAX 7CHsKats, LLC
TIER 4: 85% MAX 7B CORPORATE CENTER COURT
TIER 3 DISTURBANCE ALLOWED = 449,191 SF GREENSBORO, NC 27408
SHOWN = 248,589 SF (44 %) TELEPHONE: [phone]
TIER 4 DISTURBANCE ALLOWED = 258,071 SF FAX:[phone]
SHOWN = 57,970 SF (19 %) CONTACT: HERB PARKS
EMAIL ADDRESS: [e-mail]
( IN FEET )
1 inch = 50 ft.
0
PROJECT TITLE:
GRIFFIN'S KNOLL
GREENSBORO, NORTH CAROLINA
i
®`0000uotty
�� s
Vans
®e ®' ®`® '
•®
e e
I' ngineering,
e•e� e' /Q
e
# —since 1974-
e
1 Engineers Surveyors Planners
4609 Dundas Drive Greensboro, NC 27407
.19773
°
Phone [phone] Fax [phone]
®tl0�1� ems•
FIRM LICENSE #C.0168
ee�a�+��,`,,,
ri"j �•
PROJECT: 823 —tt DESIGN BY: ADL DRAWN BY: AL
DWG: H:\DRAMNGS\HERB PARKS \Trosper Road \Griffin MRI Site -4th
SHEET DESCRIPTION:
UTILITY PLAN
SCALE: 1 "= 50' DATE: JANUARY 11, 2013
REVISIONS: 02 -04 -13
SHEET NO.:
REVISIONS: 02 -14 -13
15

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/ �.
?0 S 1 1 \ \ \ \ \ \\ \ \ \ C "/- ALL BUA MUST DRAIN TO POND OR
\ BIOCELL. BUILDER TO GRADE SWALES AS
� '._ �M\ I , � �. -� ��, %: ;\ : \ / / �) / �, l I \ \® \ y � \ \ \., •, `.. \ ° - -- -- - _ - - NEEDED To ENSURE THAT ALL BUA
> S
-FIN MILL �\ 1 - / r , �, •�.\ \
/ IICTO STORM SEWER OR ROADWAY
I, SECTION 1 --
34, PG. 147
84, PG. 785 / ,�.._..._ -y- --� r' �.- \ OF G9$ ®�� NOTE:
\ 2223 \P _ _ _ _--- --
/ l ► P R. - \ - ALL NEW IMPERVIOUS SURFACE AREAS MUST DRAIN
A; RLiI'E �-"®'�' . ® TO THE PROPOSED PERMANENT WET DETENTION
- - °- /• ®/ _ �. ®_ -� POND AND BIO -CELL.
_ P
_... _�j
/ /ate
1 I l
N DEVELOPER:
NhsKats, LLC
,
Q.. �C
I.,�'� �\ �` COURT
�/ i,, ll //r
/ 7B CORPORATE CENTER C
GREENSBORO, C
.�/ ' t I > l ._. - TELEPHONE: 336
82 4127
FAX:[phone]
CONTACT: HERB PARKS
EMAIL ADDRESS: hparks®besisuites.com
14.68 AC OFFSITE
AREA DRAINING
TO THIS POINT
Qtoo=77.2 CFS
(1 =8.1, C =0.65)
DENSITY LIMITS:
0.
GREENSBORO WATERSHED, WS III WCA (HIGH - DENSITY OPTION)
TIER 3: 30% BUA MAX
TIER 4: 40% BUA MAX
TIER 3 ALLOWANCE = 12.89 ACRES X 30% = 3.87 ACRES ALLOWED
TIER 3 BUA SHOWN = 2.26 ACRES
TIER 4 ALLOWANCE = 6.97 ACRES X 40% MAX = 2.79 ACRES ALLOWED
TIER 4 UNITS SHOWN = 1.07 ACRES
TOTAL ALLOWED = 6.70 ACRES
TOTAL SHOWN = 3.33 ACRES
WATERSHED CONTROL NOTES:
1. WATERSHED: GREENSBORO WCA TIERS 3 & 4 -REEDY FORK WS III
2. TOTAL BUILT UPON AREA:
STREETS: 43,608 SF
LOTS: 32 © 3,000 SF /LOT = 96,000 SF
SIDEWALKS: 5,963 SF
TOTAL = 145,571 SF (16.98 %)
3. DISTANCE TO NEAREST FLOOD PLAIN: >2,000'
4. AVERAGE % SLOPE: +/- 14.9%
5. DISTURBED AREA: TIER 3: 80% MAX
TIER 4: 85% MAX
TIER 3 DISTURBANCE ALLOWED = 449,191 SF
SHOWN = 248,589 SF (44 %)
TIER 4 DISTURBANCE ALLOWED = 258,071 SF
SHOWN = 57,970 SF (19 %)
OUTLET PROTECTION
FES# SIZE FLOW(cfs) La (ft) W. W. Thickness (ft) RIP -RAP
5
15"
0.71
10'
3.75'
12'
13"
CLASS B
22
30"
1 31.21
14'
7.5'
1 16.5'
16"
CLASS B
23
72
414.43
40'
18
46
36"
CLASS II
GEOTEXTILE LINER TO BE
INSTALLED UNDERNEATH
RIPRAP PAD
NOTE:
IN THE PROCESS OF OBTAINING ALL OF THE NECESSARY
APPROVALS FROM THE STATE AND CORPS FOR THE
STREAM CROSSINGS AND WETLAND DISTURBANCE.
SITE DATA:
TOTAL AREA: ±19.86 ACRES
TAX MAP PARCELS: 0137489, 0137392, 0137394, 0137415 -8
WATERSHED: GREENSBORO WCA TIERS 3 & 4 REEDY FORK WS III
PROPOSED ZONING: CD -R5
PROPOSED NUMBER OF LOTS: 32
AREA IN ROW= ±1.59 AC
AREA IN COMMON ELEMENTS: ±11.46 AC
AR EA I N LOTS: f 6.81 AC
TOTAL PHASE II AREA: ±19.86 AC
C__ 0.65 PIPE CHART
1= 5.75 IN/HR DESIGN STORM = 10 YR
NO.
AREA
(Acre)
TOT.
(Acre)
CXI
Q
(C.F.S.)
ppEREQ.
(Aches)
SLOPE
(%)
CAP.
(C.F.S.)
ppEUSE)
(inches)
SLOPE
USED (%)
CAP.
(C.F.S.)
1
0.07
0.07
3.74
0.26
15
0.00
0.26
15
3.33
11.82
2
0.06
0.13
3.74
0.49
15
0.01
0.49
15
4.53
13.78
3
0.10
0.10
3.74
0.37
1 15
0.00
0.37
15
0.50
4.58
4
0.19
0.29
3.74
1.08
15
0.03
1.08
15
0.50
4.58
5
0.00
0.29
3.74
1.08
15
0.03
1.08
15
0.50
4.58
6
0.55
0.55
3.74
2.06
15
0.10
2.06
15
8.72
19.12
7
0.28
0.83
3.74
3.10
15
0.23
3.10
18
0.50
7.45
8
0.33
1.16
3.74
4.34
15
0.45
4.34
18
0.50
7.45
9
0.34
1.50
3.74
5.61
15
0.75
5.61
18
0.75
9.12
10
0.31
1.81
3.74
6.76
15
1.09
6.76
24
0.50
16.04
11
0.28
2.09
3.74
7.81
15
1.45
7.81
24
0.60
17.57
12
0.27
2.36
3.74
8.82
15
1.86
8.82
24
0.70
18.98
13
1.30
1.30
3.74
4.86
15
0.56
4.86
15
4.02
12.98
14
1.06
2.36
3.74
8.82
15
1.86
8.82
18
4.12
21.38
15
0.46
4.04
3.74
15.10
15
5.44
15.10
24
0.90
21.52
15A
1.22
1.22
3.74
4.56
15
0.50
4.56
1 15
7.00
17.13
16
0.34
4.38
3.74
16.37
15
6.39
16.37
24
5.82
54.71
17
0.60
7.34
3.74
27.43
15
17.94
27.43
30
0.50
29.08
18
0.17
0.17
3.74
0.64
15
0.01
0.64
15
5.84
15.65
19
0.31
0.48
3.74
1.79
15
0.08
1.79
15
2.98
11.18
20
0.15
0.63
3.74
2.35
15
0.13
2.35
15
8.00
18.32
21
0.33
8.30
3.74
31.02
15
22.95
31.02
30
0.94
39.87
22
0.00
8.30
3.74
31.02
15
22.95
31.02
30
0.60
31.85
23
110.00
110.00
5.80
414.43
72
0.95
414.43
72
1.00
424.58
GRAPHIC SCALE
5 0 50 50 100 2(
( IN FEET )
1 inch = 50 ft.
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(
IVELOCITY- L41 FPS _
r' 3r
DEPTH - 1154'
Weir Calculator
GRASS LINED SPILLWAY
DS75 EXM" LEER w APLE PATTERN D
Given Input Data:
20'
Shape ...........................
Trapezoidal
Solving for .....................
Flowrate
Depth .......................
0.54'
Manning's n .....................
0.030
Bottom width .................... 20 ft
Left slope ......................
0.3300 ft/ft
Right slope .....................
0.3300 ft/ft
Computed Results:
Bottom width ....................
Flowrate ...........................
28.14 cfs
Velocity ............................
2.41 fps
EMERGENCY SPILLWAY
CONTROL SECTION
NTS
0.26' ft
6° X e SPACING
CAP.
TRASH •o. DIA
IL_`_ _,"UI
ANn- vORTEx t2'
SUPPORT PLATES
M. 42" RISER
LOCKING HARDWARE
TO STABILIZE TRASH
GUARD (4 REQUIRED CAP. ALUMINUM
EKKT WELDING TO
ANn- YORfEX PLATE
3-'I DETAIL
FOR SECURING TRASH RACK
SIDE VIEW TO RISER BARREL
TRASH RACK DETAIL
NTS
POND MAINTENANCE SCHEDULE
DESCIPTION OR
MAINTENANCE ITEM RESPONSIBLE PARTY SCHEDULE PROCEDURE
Acess to Pond HOA Monthly Page 3
Dam Top and Faces HOA Annually Page 3
Grass Cutting HOA Monthly Page 3
Rip -Rap Channels HOA Bi- Monthly Page 3
Rip -Rap Pads HOA BI-Monthly Page 3
Rip -Rap Spillway HOA Bi- Monthly Page 3
Emergency Spillway HOA Bi- Monthly Page 3
Dewatering Pipe HOA Monthly Page 3
48" TRASH RACK - ALUMINUM ANGLE & ROD
COVER (9' O.C.) 10' Met
TRASH RACK
WITH ANTIVORTEX DEVICE
---JQP W-A& N MLEV 779.50 -
• 100 YR_ 24 M1 ELEY. _777A3 - - - - - - - - - - - -
C4 10 VR - 24 HR qR . 7X_R j;MQ �L0ULW6X�dEVA119NL 77. -V- - -�
2 YR = 24 Mt ELEV. - rMW - - - - - - -
t VR = 24 NN aEV. =7755! - 1• Y
TOP OF RISER ELEY -775 25 _ - 3 s' COMPACTED EAR
n TEMPORARY WATER QUALITY POOL I°_"l
DEWATERING PIPE INVERT ELEV - 774.00 To' MN. TOP ELEVATION
n4 So - 771.94
- - 2° DNA. DEWATETNG -R - 773M
GALVANIZED WIRE SCREEN a0- is FILTER DIAPHR
OYS DEWAM" ME SHELF (SEE DETAIL)
PERMANENT WATER QUALITY POOL 36" CAP
RISER-INV. - 768.00
coN EcnDN TO BE WEl='
VALVE KEY
8" BOTTOM DRAIN & SHEAR GATE VALVE INV ELEV - 769.50
PERMANENT SEDIMENT STORAGE VOLUME in 14872 Of zi° CAP BARREL o 536%
BOTTOM OF BASIN ELEV = 768.00 FLANGE CONNECTION WITH
STAGE - STORAGE TABLE
ELEVATION
OEM - a2B
20'
CUM. VOLUME (CF)
�� -•
Channel Calculator
_
GRASS LINED SPILLWAY W/
DS75 EXCELSIOR LINER, STAPLE P/
Given Input Data:
0.00
Shape...........................
Trapezoidal
Solving for ....................
Depth
Flowrate ........................
28.14 cfs
Slope ...........................
0.0718 ft /ft
Manning's n ..................... 0.030
Bottom width ....................
20 ft
Left slope ......................
0.3300 ft /ft
Right slope ..................... 0.3300 ft/ft
Computed Results:
14,475
Depth ...........................
0.26' ft
Velocity ........................
5.21 fps
EMERGENCY SPILLWAY EXIT SECTION
NTS
8,343
VALVE KEY
4,706
774.010
PREN GASKET
33,477
STEEL BOLTS
0
12,779
O
13,506
0
tSTAINLESS
M DRAIN
0 0
14,988
O
15,743
67,787
FLANGE
FRONT VIEW SIDE VIEW
BOTTOM DRAIN & SHEAR
NTS
GATE VALVE
6° X e SPACING
CAP.
TRASH •o. DIA
IL_`_ _,"UI
ANn- vORTEx t2'
SUPPORT PLATES
M. 42" RISER
LOCKING HARDWARE
TO STABILIZE TRASH
GUARD (4 REQUIRED CAP. ALUMINUM
EKKT WELDING TO
ANn- YORfEX PLATE
3-'I DETAIL
FOR SECURING TRASH RACK
SIDE VIEW TO RISER BARREL
TRASH RACK DETAIL
NTS
POND MAINTENANCE SCHEDULE
DESCIPTION OR
MAINTENANCE ITEM RESPONSIBLE PARTY SCHEDULE PROCEDURE
Acess to Pond HOA Monthly Page 3
Dam Top and Faces HOA Annually Page 3
Grass Cutting HOA Monthly Page 3
Rip -Rap Channels HOA Bi- Monthly Page 3
Rip -Rap Pads HOA BI-Monthly Page 3
Rip -Rap Spillway HOA Bi- Monthly Page 3
Emergency Spillway HOA Bi- Monthly Page 3
Dewatering Pipe HOA Monthly Page 3
48" TRASH RACK - ALUMINUM ANGLE & ROD
COVER (9' O.C.) 10' Met
TRASH RACK
WITH ANTIVORTEX DEVICE
---JQP W-A& N MLEV 779.50 -
• 100 YR_ 24 M1 ELEY. _777A3 - - - - - - - - - - - -
C4 10 VR - 24 HR qR . 7X_R j;MQ �L0ULW6X�dEVA119NL 77. -V- - -�
2 YR = 24 Mt ELEV. - rMW - - - - - - -
t VR = 24 NN aEV. =7755! - 1• Y
TOP OF RISER ELEY -775 25 _ - 3 s' COMPACTED EAR
n TEMPORARY WATER QUALITY POOL I°_"l
DEWATERING PIPE INVERT ELEV - 774.00 To' MN. TOP ELEVATION
n4 So - 771.94
- - 2° DNA. DEWATETNG -R - 773M
GALVANIZED WIRE SCREEN a0- is FILTER DIAPHR
OYS DEWAM" ME SHELF (SEE DETAIL)
PERMANENT WATER QUALITY POOL 36" CAP
RISER-INV. - 768.00
coN EcnDN TO BE WEl='
VALVE KEY
8" BOTTOM DRAIN & SHEAR GATE VALVE INV ELEV - 769.50
PERMANENT SEDIMENT STORAGE VOLUME in 14872 Of zi° CAP BARREL o 536%
BOTTOM OF BASIN ELEV = 768.00 FLANGE CONNECTION WITH
STAGE - STORAGE TABLE
ELEVATION
AREA (SF)
VOLUME (CF)
CUM. VOLUME (CF)
768.00
2,396
316
0.00
1,316
768.50
2,866
1,316
3,357
769.50-
3,848
4,673
4,368
770.50
4,887
9,040
5,435
771.5 0
5,982
14,475
6,558
772.50
7,134
21,033
7,739
773.50
8,343
28,771
4,706
774.010
10,482
33,477
5,815
774.50
12,779
39,293
13,506
775.5 0
14,233
52,799
14,988
776.50
15,743
67,787
16,526
777.50
17.309
84,313
18,121
778.50
-18-.93'3''
8, 933
102,434
FOREBAY STAGE - STORAGE TABLE
BIEVAININ
A!A an
VOUBIE (CF)
Our. VOURE (CF)
768.00
561
316
0
768.50
704
316
866
769.50
1,028
1,182
1,216
770.50
1,404
2,398
1,619
771.50
1,833
4,017
2,074
772.50
2,314
6,091
1,222
773.00
2,575
7,313
ENGINEER STATEMENT OF POND AND DAM SAFETY
THE STORMWATER POND AND DAM SHOWN ON THIS PLAN SATISFIES
REQUIREMENTS OF THE NORTH CAROLINA STATE DAM SAFETY LAW OF
1967 (AS AMENDED THROUGH 1995] AND THE RULES AND REGULATIONS
AS PRESENTED IN THE NORTH CAROLINA ADMINISTRATIVE CODE TITLE
15A, SUBCHAPTER 2K - DAM SAFETY. EVEN IN THE CASE WHERE THE
DAM SHOWN ON THIS PLAN IS DETERMINED BY THE STATE TO BE EXEMPT
FROM THE ABOVE NOTED DAM SAFETY REQUIREMENTS, 1, AS THE QUALIFIED
DESIGN ENGINEER, STATE THAT THE POND AND DAM ARE DESIGNED TO BE
SAFE AND ADEQUATE FOR THE PROTECTION OF PUBLIC HEALTH, SAFETY,
WELFARE, AND DOWNSTREAM PROPERTY.I UNDERSTAND THAT THIS STATE-
MENT AS THE DESIGN ENGINEER SHALL NOT RELIEVE THE OWNER OR
OPERATOR OF THE POND AND DAM FROM THE LEGAL DUTIES, OBLIGATIONS,
AND LIABILITIES ARISING FROM SUCH OWNERSHIP OR OPERATION.
10' VEGETATED SHELF PLANTING SPECIFICATIONS:
MINIMUM REQUIRED PLANTINGS: 50 PLANTS /200 SF SHELF AREA (per NCDENR STORMWATER BMP MANUAL) "In accordance with the requirements in articles GS 143- 215.25A and 143 - 215.26 of the VICINITY MAP NO S
10'
MINIMUM REQUIRED PLANTINGS- 50 SF P MS /2000 SF 05.638 SF = 1.410 PLANTS j4" container) NC Dam Safety Law and NC Administrative Code 15A NCAC 2K .0200, the Regional ................
SHALLOW WATER PLANTS Engineer in the Winston -Salem Regional Office of the NC State's Land Quality Section ....................
Iris Virginica (common name: Blue Flag Iris): 352 plants (4' Container) has been / will be contacted for the determination of whether the proposed dam is • ' • • • ' ' • ',',
Sagittaria Lancifolia (common name: Bulftounge): 352 plants (4' container) governed by or exempt from the Dam Safety Law." LAKE �o
BRANDY.
SHALLOW LAND PLANTS .'.'.'.' �
Carex Tenera (common name. Sedge): 353 plants (4' container) Planting and After -Care Reyuiremsnts:. 10 O`� O
FO
Lobelia Cardinalis (common name: Cardinal Flower): 353 plants (4" container) • . • • • • • •
Soil amendments should be incorporated at the end of the site development process to prevent sediment from , .......
Note: Any shallow water and shallow land herbaceous plant from the NCDENR Stormwater BMP Manual entering the BMP focaility. The BMP should be planted and mulched immediately after emending the soil to PLANTS & MIXTURES PLANTING RATES /ACRE PLANTING DATES Oy p
Chapter 9, Table 9 -1 be substituted for the above mentioned plant 9 stabilize the site as soon as possible. TAU_ FESCUE too -150 Wes AUG. 15 -OCT, is
P �Y p species on the vegetated 4
shelf. A minimum of three (3) different species of plants is to be used. The herbaceous plant (Low MAINTENANCE) FMB. 15-MAY 1 �
species specified above are common locally and readily avis to for purchase. All plant species used Newly installed plant material requires water in order to recover from the shock of being transplanted. Be sure r
that some source of water is provided, especially during dry periods. This will reduce plant loss and provide the
(if they differ from those shown above) are to be reported to Engineer for approval prior to planting. new materiels with o chance to establish root growth. TAIL FESCUE zoo -z50 Wes AUG. AUK FFB. . 15--OCT. is
(NIGH MAINTENANCE) t
Total Number of Plants Specified: 1,000 plants In general, fall and winter are optimal for planting in North Carolina. There are some exceptions. Shallow water W
plants should be installed between April 1 and July 15. TALL FESCUE k 100 Res E AUG. t5-= t
Soil SpecificatiOnS: KOBE OR KIXEIW lESPEDEZA 20-25 LBS (SCARIFIED S® FOR SPR1MiG AU 15 -OCT. 15 x
Minimize or eliminate the use of pesticides and fertilizers. A one -time application of fertilizer is allowable to a txNSCARIETED FOR LATE FALL & WINIlER) Z
The soil mix must be uniform and free of stones, stumps, roots, or other similar material greater than two help stablishment.
inches. P TALL FESCUE dt 50 LBS k NOV. 1-FEB. 1 � it
A minimum two year warranty is required. At the end of the first year, and again at the end of the second` LESoEDEZA so Les /aaE GUNS) - W
z
Soil texture of the mix should be loamy sand with no more than 10% clay (USDA soil texture classification) Y ear, all plants that do not survive must be replaced. TALL FESCUE E 60 LBS AuY a AuKASr
PR
A minimum organic content of 1Ox by dry weight for areas planted with woody species and 5X for turf areas. If best professional practices show that mowing is needed to maintain optimal plant health, mow according to OFRSUD NGRAS 3o Les ,R N
OR SUDANCRASS (MILLET A SJDANGRASS MUST BE KEPT AT 10-1 Y) A
The PH should be between 5.5 and 7.0. If the PH foils outside of this range, it my be modified with lime to best professional practices.
increase the PH or iron sulfate and sulfer to lower the PH. The lime or iron sulfate must be mixed uniformly If plants are dead, diseased, or dying, determine the source of the problem, remedy it, and replace affected TAU FESCUE E 70 Les & Nov. 1 -JAN. 30
into the soil prior to use. P lants. RYELYRAIN 25 Les (RYORAIN MUST BE KEPT AT 10-12-)
Planting soil can be amended on -site soil material or soil brought in from off -site. in either case, it must If weeds are present, remove weeds, preferably by hand. If a pesticide is used, wipe it on the plant rather than COMMON BEGANDAGRASS s LBS (NULIM) APRIL 15 -JUNE 30
VA N = 774.00
meet the requirements specified and o soil analysis furnished stating that the soil meets all the requirements spraying. 15-20 Les (UFNHUILED) FEB. I -MARCH 30 PERMANENT WATER -
before any planting can begin. °
�r�DBED PREPARATION
ELEV = 773.00 ' 5' WIDE
CLASS 'B'
STRIP THE AREA TD LE SEEDED TO A MINIMUM DEPTH OF 1-6 INCHES. RIP -RAP
EMOVE ALL LOOSE ROCK. ROOM ETC. LEAVING SURFACE SMOOTH AAA UNIFORM.
PPLY SEED. AGRICULTURAL UME, FERTILIZER, AND SUPERPHOSPHATE UNIFORMLY AND N
MIX WITH THE SOIL (RATES ARE BELO").
EEO ON A FRESHLY PREPARED SEEDBED AND COVER THE SEED LIGHTLY WITH SEEDING 768.00 768.00
EQUPMENT OR CULTPACK AFTER SEEDING.
IULCH IMMEDIATELY AFTER SEEDING AND ANCHOR MULLCH. (`= -� ITT-
rES: AGRICULTURAL LIMESTONE- 2 TONS /ACRE
FERTILIZER- 10 -10-10 AT 1100 -1000 POUNDS /ACE BAFFLE - RIP -RAP SECTION
SUPERPHOSPHATE- 500 POUNDS /ACRE OF 2OX ANALYM SUPERPHOSPHATE NTS
MULCH- 1.5 TONS SMALL GRAIN STRAW /ACRE (APPROXNATELY 60 BALES)
ANCHOR- CRIMP STRAW INTO SOIL WITH MACHINE OR TACK WITH LIQUID ASPHALT
AT 400 GALLONS /ACE OR EMULSIFIED ASPKALT AT 300 GALLONS /ACRE
I I I I I I I 11= FILL RISER WI o ` •• °
ELEVATION 761.50
(6) 24" X 6' STEEL PLATES WELDED
SECURELY IN PLACE r r '
24°
12 "��
COMPACTION / INFILTRATION NOTE:
DUE TO NO EVIDENCE OF A SEASONAL HIGH WATER TABLE WITHIN 6' OF
THE POND'S PROPOSED PERMANENT POOL ELEVATION (766), THE BOTTOM
OF POND, SIDE SLOPES, AND DAM EMBANKMENT TO BE COMPACTED SO
THAT THE INFILTRATION RATE OF WATER OUT OF THE POND IS LESS THAN
0.01 IN/HR. ONCE THE POND HAS BEEN GRADED, THE CONTRACTOR IS TO
HAW THE POND'S SURFACE TESTED FOR INFILTRATION RATE BY A LICENSED
GEOTECHNICAL ENGINEER. ENGINEERING REPORTS FOR THE COMPACTION AND
INFILTRATION TESTS PERFORMED ON THE POND ARE TO BE SUBMITTED TO
THE ENGINEER /OWNER. IF AN INFILTRATION RATE OF LESS THAN 0.01 IN/HR
CANNOT BE OBTAINED BY CONVENTIONAL COMPACTION METHODS, THE
CONTRACTOR IS TO INSTALL AN IMPERMIABLE LINER IN THE POND PER THE
DIRECTION OF A LICENSED GEOTECHNICAL ENGINEER.
lzmemffiml
EOPREE GASKET (TIP)
NOTE: ALL PPE CONNECTIONS ARE FO BE WATERTIGHT.
CAP - CORRUGATED ALLIWINU11 PIPE
Z1tAJVIM nLtwrt YYAICR% IADL r- E[Gr VE%E NVVRL,
DUE TO THE AMOUNT OF CUT TO THE BOTTOM OF THE
PROPOSED PERMANENT WET DETENTION POND #1 FROM THE
EXISTING GRADE, THE CONTRACTOR /OWNER IS TO PERFORM A
SEASONAL HIGH WATER TABLE INVESTIGATION ONCE THE POND
HAS BEEN ROUGH GRADED. CONTRACTOR /OWNER TO PROVIDE
THE CITY OF GREENSBORO A SEASONAL HIGH WATER TABLE
REPORT ONCE THIS INVESTIGATION HAS TAKEN PLACE.
CGS
CUT­-OFF TIENCH. EXCAVATED
THEN BAC RILED AM COMPACTED 4.0!
WITH LOW PEF.EABRUTY SOIL
SECTION THRU BERM AND SPILLWAYS
r1S
OUT. 3760.00
4' PVC PIPE FROM FILTER DIAPHRAGM
I DETAIL - OUTLET PROTECTION
5
�la�T
0.71
10'
3.75'
12'
13"
CLASS 8
22
30°
31.21
OUTLET PROTECTION
7.5'
16.5'
16"
1 ■
23
72"
414.43
40
18'
1 46'
1
FES#
SIZE
FLOW(cfs) Lo (ft)
W1 W2
Thickness (ft)
RIP -RAP
CLASS 1
- WS NIPRAP iz
I DETAIL - OUTLET PROTECTION
5
15"
0.71
10'
3.75'
12'
13"
CLASS 8
22
30°
31.21
14'
7.5'
16.5'
16"
CLASS 8
23
72"
414.43
40
18'
1 46'
36"
CLASS 11
GEOTEXTILE LINER TO BE
INSTALLED UNDERNEATH
RIPRAP PAD
NOTE:
THE PER, MI ANENT WET DETENTION POND SHOWN ON THIS PLAN
MUST BE STABILIZED WITHIN 14 DAYS OF THE COMPLETION OF
CONSTRUCTION.
NOTE:
THE WET DETENTION POND HAS BEEN SIZED TO STORE THE
RUNOFF EXCEEDING THE PREDEVELOPEMENT RATE. AN ORIFICE
HAS BEEN SIZED SUFFICIENTLY TO ENSURE THAT THE
PRE - DEVELOPMENT FLOW RATE IS NOT EXCEEDED.
INV. IN:796.20
RW. OUT:796.00
HYDRAFLOW HYDROGRAPH ROUTING RESULTS:
1 -yr Pre - Development Flow: 12.05 cfs
1 -yr Inflow: 19.94 cfs
1 -yr Outflow: 5.515 cfs
1 -yr Max. Water Surface Elevation: 775.56
il
ALLOCATION CHART FOR WET DETENTION POND #1
ON -SITE
DRAINAGE AREA TO POND #1
7.88 ACRES
OFF -SITE
DRAINAGE AREA TO POND #1
1.07 ACRES
TOTAL DRAINAGE AREA TO POND #1
8.95 ACRES
ON -SITE
BUA TO POND #1
3.05 ACRES
OFF -SITE
BUA TO POND #1
0.00 ACRES
TOTAL BUA TO POND #1
3.05 ACRES
MAXIMUM
BUA TO WET DETENTION POND #1
3.05 ACRES
COLLECTOR PIPES TO BE
CAPPED ON WITH ENDS
1�
,,. FROM FINE GRAIN OR CLAYEY SOILS)
4-IICH SO UD WALLED SCH 6o PVC PIPE
DISCHARGES TO DAYLIGHT IN DISSFATOR.
VMWT SCREEN TO 1E PLACED ON ENDS
4 -INCH SOLID WALED SCH 60 PVC PIPE
DISCHARGES TO DAYLIGHT IN OISSIPATOR.
VARMn SCREEN TO BE PLACED ON ENDS
NO. 20
SCH 80 PVc
OR PPE
PLAN VIEW
1
3
2.0
- WIN
FROM FINE GRAIN OR CLAYEY
FLOW - -®
/-INCH N0. ZO
SIATTEU SC1 !IG PVC 4-INCH SOLID WAl1FD SCH 80 PVC PIPE
COLLECROR PIPE 01SCWRCES TO DAYLX,YNT IN aISSIPATOR.
VARIAT SCREEN TO BE PLACED ON ENDS
PROVIDE 6-INCHES OF CLEARANCE
BETWEEN BOTTOM OF FILTER AND
BOTTOM OF SLATTED WE
FILTER DIAPHRAGM DETAIL
NTS
14'
4.0'
6. ' 2.0''
DIA
O
Qj
3.0'
FILTER DIAPHRAGM DETAIL
NTS
2 -yr Pre - Development Flow: 17.77 cfs ENGINEER'S CERTIFICATION OF STORMWATER QUALITY CONTROL:
2 -yr Inflow: 26.73 cfs 1 CERTIFY THAT, PURSUANT TO GENERALLY ACCEPTED ENGINEERING STANDARDS IN THE COMMUNITY, IT IS MY
2 -yr Outflow: 13.89 cfs PROFESSIONAL OPINION THAT RUNOFF FROM THE FIRST INCH OF RAINFALL FROM AREAS THAT ARE REQUIRED
2- r Max. Water Surface Elevation: 775.83 TO BE CONTROLLED PER SECTION 30 -7 -1.12 OF THE GREENSBORO DEVELOPMENT ORDINANCE IS CONTROLLED
Y BY A PERMANENT ENGINEERED STORMWATER QUALITY CONTROL THAT HAS BEEN DESIGNED TO MEET OR EXCEED
THE GREENS STORMWATER 7MJAGET MANUAL. eW,' ®S¢1a1 /11®DSd
10 -yr Pre - Development Flow: 34.41 cfs oo•,�� GARO t® 000
10 -yr Inflow: 45.10 cfs ® ®° �"•• °tiS� %00 �2 ®�00
10 -yr Outflow: 33.36 cfs sl RE
SEAL
10 -yr Max. Water Surface Elevation: 776.35 .. Z,
`�¢
DATE r s 1.,977 ° o
100 -yr Pre - Development Flow: 63.06 cfs ®� .s
100 -yr Inflow: 74.50 cfs °'y
100 -yr Outflow: 60.16 cfs PERMANENT WET DETENTION POND NOTES: r"o ••4+a+. �� ® ®``
100 -yr Max. Water Surface Elevation: 777,03
Top of Dam Elevation: 778.50 1. THE ENGINEER'S CERTIFICATION OF COMPLETION WILL BE REQUIRED PRIOR AL PLAT OR CERTIFICATE
OF OCCUPANCY. THE STORMWATER CONTROL IS TO BE INSPECTED TO ENSURE IT IS FUNCTIONING AS DESIGNED AND
Freeboard Provided: 1.47 HAS FULL DESIGN VOLUME PRIOR TO ISSUANCE OF THE FINAL CERTIFICATE OF OCCUPANCY.
2. THE PROPERTY OWNER IS RESPONSIBLE FOR MAINTAINING THE STORMWATER CONTROL(S)
ACCORDING TO THE APPROVED MAINTENANCE PLAN AND DIRECTION OF THE CITY OF
GREENSBORO.
ENGINEER CERTIFICATION NOTE OF STORMWATER QUANTITY CONTROL 3. THE CONTRACTOR SHALL SCHEDULE A PRE - CONSTRUCTION MEETING WITH THE CITY OF GREENSBORO
WATERSHED ENGINEER WHEN THE PERMANENT WET DETENTION POND SITE HAS BEEN CLEARED AND THE
THE STORMWATER CONTROL STRUCTURE(S) SHOWN ON THIS PLAN IS(WILL BE) POND HAS BEEN FIELD STAKED.
DESIGNED TO REDUCE THE POST - DEVELOPMENT 1 -YEAR, 2 -YEAR, AND 10 -YEAR 4. THE CITY OF GREENSBORO AND THEIR ASSIGNS HAVE RIGHT TO ACCESS THE STORMWATER CONTROL(S)
24 HOUR STORM EVENTS TO THEIR RESPECTIVE PRE - DEVELOPMENT RATES. FOR INSPECTION OR MAINTENANCE, AS NECESSARY.
TOTAL DRAINAGE AREA = 18.95 ACRES
ON -SITE DRAINAGE AREA = f7.88 ACRES
OFF -SITE DRAINAGE AREA = 11.07 ACRES
PROPOSED BUA DRAINAGE TO POND = 13.12 ACRES (34.86X)
PERMANENT SEDIMENT STORAGE:
REQUIRED= 1/8 AC -IN /AC x 8.95 AC DRAINAGE AREA = 4,062 CF
BOTTOM ELEVATION = 768.00
TOP ELEVATION = 769.50
PROVIDED = 4,682 CF
FOREBAY ALLOCATION:
FOREBAY VOLUME: 7,313 CF
PERMANENT POOL VOLUME: 33,477 CF
FOREBAY ALLOCATION: (7,313 CF/33,477 CF)X(100) = 21.84%
PERMANENT WATER QUALITY POOL'
3.0' WATER QUALITY POOL AVE. DEPTH, 40% B.U.A., 90% TSS REMOVAL
REQUIRES 2.5% SURFACE AREA
REQUIRED = 2.5% x 8.95 AC x 43,560 SF /AC = 9,747 SF
TOP ELEVATION (AVE. DEPTH = 3')= 774.00
PROVIDED = 10,482 SF
TEMPORARY WATER QUALITY STORAGE VOLUME:
FOR 40% B.U.A.
Rv= 0.05+ (0.009)(40)
R\-- 0.41
VOLUME REQ'D.= 1.0 • Rv • DA = 1.0. 0.41 •8.95 = 13,321 CF
12
WHERE DA = DRIANAGE AREA (ACRES)
VOLUME REQUIRED = 13,321 CF
BOTTOM ELEVATION = 774.00
TOP ELEVATION = 775.25
PROVIDED = 15,216 CF
PRINCIPLE SPILLWAY.
DESIGN STORM= 1 YR, 24 HR STORM
2 YR, 24 HR STORM
RISER= 36" 10 YR, 24 HR STORM
BARREL =24"
NOTE: A 24" BARRELL HAS BEEN CHOSEN IN ORDER TO LIMIT
POST DEVELOPMENT FLOW TO THE PRE - DEVELOPMENT FLOW RATE.
THE REMAINDER IS BEING STORED IN THE POND.
RELEASE RATE:
AVERAGE HEAD= 0.625'
HOLE DIAMETER= 2"
AREA OF HOLE= 0.0218 SF
TEMP. WATER QUALITY DETENTION TIME: 2.20 DAYS
ELEVATION OF WEEP HOLE INVERT = 774.00
EMERGENCY SPILLWAY:
DESIGN STORM= 100 YR
EMERGENCY SPILLWAY TYPE: 20' TRAPEZOIDAL WEIR
ELEVATION OF WEIR = 776.50
CONTROL SECTION: DS75 EXCELSIOR LINER /GRASS LINED EMERGENCY SPILLWAY
3:1 SIDE SLOPES
BOTTOM WIDTH= 20'
n= 0.030
FLOW DEPTH = 0.54'
DISCHARGE = 28.14 CFS
VELOCITY =2.41 FT /SEC
FREEBOARD AND SETTLEMENT= 1.46'
TOP OF DAM ELEVATION= 778.50
EXIT SECTION: DS75 EXCELSIOR LINER /GRASS LINED CHANNEL
DISCHARGE =28.14 CFS
3:1 SIDE SLOPES
7.18% SLOPE
BOTTOM WIDTH = 20'
n= 0.030
DEPTH= 0.26'
VELOCITY= 5.21 FT /SEC
CONCRETE ANCHOR DESIGN:
RISER DIAMETER = 36"
VOLUME DISPLACED = 51.25 CF
BOUYANCY FORCE= ( 51.25 CF)(62.4 PCF)= 3,198 LBS
VOLUME OF CONCRETE REQUIRED= 3,198 LBS/ (150- 62.4)= 36.50 CF
FACTOR OF SAFETY = 2.0 ..... 36.5 X 2.0 = 73 CF
SIZE= 6.5' X 6.5' X 2' = 84.50 CF

I
ti
IL/ �
O
O
1
/
6'
T
1 �
I
i
1
NOTE:
1. ALL CONSTRUCTION TO BE TO CITY OF GREENSBORO
AND NCDENR STANDARDS AND SPECIFICATIONS
2. CONTRACTOR TO VERIFY DEPTH AND LOCATION
OF ALL EXISTING UTILITIES PRIOR TO CONSTRUCTION.
3. CONTRACTOR TO COMPLY WITH THE NEW
O.S.H.A. REGULATIONS CONCERNING TRENCHING
FOR INSTALLATION OF UTILITIES.
4. NO SUBSURFACE INVESTIGATION CONDUCTED
BY EVANS ENGINEERING, INC.
r A r •
SCALE: 1 "=10'
4" CLEANOUT (TYPICAL) TO BE
STUBBED AND CAPPED AT TOP OF
SOD LAYER (4 TOTAL FOR BIOCELL# 1)
RIP RAP
DOUGHNUT (050 = 6-)
WITH #57 WASHED
STONE ON FACE
18' HIGH WITH FABRIC TO
CREATE FOREBAY
TOP OF SOD ELEI/AT /ON
FES 15 = 760.00
® INV.- 760.00
PIPE #5
SEE PIPE CHART
FOR PIPE INFOMATION
TOP OF SOD ELEVATION= 760.00
------------ - - - - -- - - --
TOP OF FILL SOIL MEDIA ELEVATION= 759.75
2'
TOP OF WASHED SAND ELEVATION =757.75
- - - - - - - - - - - - - - - - - - - - - -
TOP OF UNDERDRAIN STONE ELEVATION= 757.42 4"
------------ - - - - -- - - --
TOP OF 4" UNDERDRAIN PIPE ELEVATION= 757. 09 4"
BOTTOM OF 4" UNDERDERAIN PIPE ELEVATION= 756.75 _ 4
---------- - - - - -- 756.75/
POND ING DEPTH (12� = 761.00
�O
�cS.Gf�O D.M.U.E. OVER &
�p _
15' AROUND
' BIO -CELL
75
6 -�--
558
BIORETENTION NOTES:
1. THE ENGINEER'S CERTIFICATION OF COIMPLETION WALL BE REQUIRED PRIOR TO THE FINAL PLAT OR CERTIFICATE
OF OCCUPANCY. THE STORMWATER CONOL IS TO BE INSPECTED TO ENSURE IT IS FUNCTIONING AS DESIGNED AND
HAS FULL DESIGN VOLUME PRIOR TO ISSIJ.ANCE OF THE FINAL CERTIFICATE OF OCCUPANCY.
2. THE PROPERTY OWNER IS RESPONSIBLE: FOR MAINTAINING THE STORMWATER CONTROLS)
ACCORDING TO THE APPROVED MAINTENAPH!CE PLAN AND DIRECTION OF THE CITY OF
GREENSBORO.
3. THE CONTRACTOR SHALL SCHEDULE A PRE - CONSTRUCTION MEETING WITH THE CITY OF GREENSBORO
WATERSHED ENGINEER WHEN THE PERMANENT BIOCELL SITE HAS BEEN CLEARED AND THE
BIOCELL HAS BEEN FIELD STAKED.
4. THE CITY OF GREENSBORO AND THEIR ASSIGNS HAVE RIGHT TO ACCESS THE STORMWATER CONTROL(S)
FOR INSPECTION OR MAINTENANCE, AS NECESSARY.
BLUEGRASS OR FESCUE
SOD PLANTING ON ENTIRE
SURFACE OF BIOCELL
BIOCELL #1 CALCULATIONS:
DRAINAGE AREA= 0.68 ACRES
BUA= 0.28 AC.
RUNOFF VOLUME CALCULATIONS (1" RO FROM ENTIRE WATERSHED
%BUA = 0.28 AC. / 0.68 AC. x 100 => 41.18%
Rv = 0.009( %BUA) + 0.05 = 0.009(41.18) + 0.05 = 0.42062
RUNOFF VOLUME = [(Rv)(1 ")(DA)(43,560 sf /ac)] / 12 in /ft
RUNOFF VOLUME = [(0.42062)(1")(0.68 ac.)(43,560 sf /ac)] /12 in /ft
RUNOFF VOLUME REQUIRED = 1,039 CF
TOTAL PONDING VOLUME FOR BIOCELL(REQUIRED) = 1,039 CF
TOTAL PONDING VOLUME FOR BIOCELL(PROVIDED) = 1,437 CF
TOTAL PONDING DEPTH = 12" (760 -761)
UNDERDRAIN CALCULATIONS (per NCDWQ BMP Desian Manual
Flow Through Fill Soil Media - 193 CF /HR = 0.05 CFS
Factor of Safety = 10 x 0.05 CFS = 0.50 CFS
D =16[(0.50x0.01 1) / (0-5)'_'0.5)]'_'0.375 - 2.59
Per Table 5-1, if D < 5.13, then 2 runs of 4" pipe
will be required.
BIOCELL #1
DRAWDOWN
CALCULATIONS:
FLOW
THROUGH
FILL SOIL MEDIA @ 2
IN /HR = 193
CF /HR
TIME
TO DRAIN
PONDING DEPTH = 1,437
CF / 193
CF /HR = 7.45 HOURS
TIME
TO DRAIN
TO 2' BELOW SURFACE
OF BIOCELL
#1 = 7.45 HOURS + 24 IN / 2 IN /HR
TIME
TO DRAIN
TO 2' BELOW SURFACE
OF BIOCELL
= 7.45 HOURS + 12 HOURS = 19.45 HOURS
ZONE 3
ZONE 2
ZONE 1
WIDTH OF STREAM
ZONE 1
ZONE 2
ZONE 3
50'
20'
30'
FROM TOB TO TOB
30'
20'
S0'
GRADING &
GRADING &
UNDISTURBED
UNDISTURBED
GRADING &
GRADING &
REVEGETATION
REVEGETATION
BUFFER
BUFFER
REVEGETATION
REVEGETATION
ALLOWED.
ALLOWED.
ALLOWED.
ALLOWED.
NO NEW 8UA
NO NEW BUA
NO NEW BUA
NO NEW BUA
ALLOWED
ALLOWED
ALLOWED
ALLOWED
J.
STREAM BUFFER DETAIL
N.T.S.
BIORETENTION CONSTRUCTION SEQUENCE:
1. DO NOT BEGIN INSTALLATION OF BIORETENTION AREA UNTIL AFTER
CONSTRUCTION HAS BEEN COMPLETED AND ALL UPSTREAM AREAS ARE
COMPLETE AND STABILIZED.
2. PRIOR TO CONSTRUCTION, THE CONTRACTOR SHALL SUBMIT TO THE
ENGINEER FOR REVIEW AND APPROVAL ALL MATERIALS PROPOSED IN THE
810-CELL CONSTRUCTION.
3. EXCAVATE TO BOTTOM OF BIOCELL.
4.INSTALL STORM DRAINAGE PIPES, STONE AND 4" UNDERDRAIN PIPE.
5. INSTALL FILTER FABRIC, SAND, SOIL MEDIA, AND NON CLAY SOD. AVOID
COMPACTION OF SOIL MEDIA WITH HEAVY EQUIPMENT. EMBANKMENTS TO BE
A NON -CLAY SOD.
V100-YEAR ELEVATION = 761.23
410 -YEAR ELEVATION = 761.16
'g2-YEAR ELEVATION = 761.11 -
01 -YEAR ELEVATION = 761.05 y
12" 3" SOD LAYER-----\
\IIIA,IIAIIIAI IIIAIIIAIIIAIIIA, IIA, IIA` IIA\ IIAIIIAIIIA \IIAIIIAIIIA,IIA \IIAIIIA,II A�IIA IAIIIA�IIA, IIAIIIA` IIAIIIA1IIAIIIA�.' �AIIIA, IIA, IIAIIIAIIIA, IIA1 II A IIIA \IIA,IIA \IIAIIIAIIIAIIIA,II A,IIAIIIAIIIAI IIIA,IIAIIIAIIIA,IIA,IIA\IIAI II A,IIA,IIA�IIA1IIAIIIAI
SOD NOTE:
CONTRACTOR TO SOD ENTIRE SURFACE, SLOPES, AND EMBANKMENTS
OF BIOCELL. WITH BLUEGRASS OR FESCUE SOD. CONTRACTOR IS TO
ENSURE THE USE OF SOD GROWN IN SANDY SOILS. NO SOD THAT HAS
BEEN GROWN IN CLAY OR IMPERMIABLE SOILS IS TO BE USED.
CONTRACTOR TO PROVIDE DOCUMENTATION TO ENGINEER /OWNER OF
SOD GROWN IN SANDY SOILS PRIOR TO INSTALLATION OF SOD.
3 -RUNS OF 4" SCH 40 PVC @ MIN. 0.57. REQUIRED. A MINIMUM OF 4 ROWS
OF PERFORATIONS SHALL BE PROVIDED AROUND THE DIAMETER OF THE PIPE, NO STONE REQU IRED UNDER PIPE
AND THE PERFORATIONS SHALL BE PLACED 6 INCHES ON CENTER WITHIN p
EACH ROW FOR THE ENTIRE LENGTH OF THE DRAINAGE LATERAL. SEASONAL HIGH WATER TABLE
PERFORATIONS SHALL BE 3/8 -INCH IN DIAMETER..
. •
NOT TO SCALE
5'
TOP OF EMBANKMENT
ELEVATION = 762.00
15' WIDE OVERFLOW WEIR
ELEVATION = 761.00
O�F`oW "I,
DAYLIGHT 4" PVC TO RIPRAP
PAD FOR PERMANENT WET -
DETENTION POND #1 BARREL
AS SHOWN ON PLANS
NO EVIDENCE OF SEASONAL HIGH WATER TABLE
ABOVE AN ELEVATION OF APPROXIMATELY 754.00.
CONTRACTOR TO FIELD VERIFY THAT SEASONAL
HIGH WATER TABLE IS GREATER THAN OR EQUAL
TO 2' BELOW THE BOTTOM ELEVATION OF THE
BIOCELL
100 -YEAR ELEVATION = 761.23 Q
10 -YEAR ELEVATION = 761.16 p
2 -YEAR ELEVATION = 761.11 p
1 -YEAR ELEVATION = 761.05 w i
TO BE SODDED
FESCUE SOD
BIOCELL OVERFLOW WEIR DETAIL
NIS
HYDRAFLOW HYDROGRAPH ROUTING RESULTS:
1 -yr Pre - Development Flow: 0.916 cfs
1 -yr Inflow: 1.665 cfs
1 -yr Outflow: 0.849 cfs
1 -yr Max. Water Surface Elevation: 761.05
2 -yr Pre - Development Flow: 1.350 cfs
2 -yr Inflow: 2.191 cfs
2 -yr Outflow: 1.840 cfs
2 -yr Max. Water Surface Elevation: 761.11
10 -yr Pre - Development Flow: 2.614 cfs
10 -yr Inflow: 3.597 cfs
10 -yr Outflow: 3.443 cfs
10 -yr Max. Water Surface Elevation: 761.16
100 -yr Pre - Development Flow: 4.791 cfs
100 -yr Inflow: 5.824 cfs
100 -yr Outflow: 5.667 cfs
100 -yr Max. Water Surface Elevation: 761.23
Top of Embankment Elevation: 762.00
Freeboard Provided: 0.77'
ENGINEER'S CERTIFICATION OF STORMWATER QUALITY CONTROL:
I CERTIFY THAT, PURSUANT TO GENERALLY ACCEPTED ENGINEERING STANDARDS IN THE COMMUNITY, IT IS MY
PROFESSIONAL OPINION THAT RUNOFF FROM THE FIRST INCH OF RAINFALL FROM AREAS THAT ARE REQUIRED
TO BE CONTROLLED PER SECTION 30 -7 -1.12 OF THE GREENSBORO DEVELOPMENT ORDINANCE IS CONTROLLED
BY A PERMANENT ENGINEERED STORMWATER QUALITY CONTROL THAT HAS BEEN �D®SI`tlJV TO MEET OR EXCEED
THE GREENSBOR ORMWATER MANAGEM T M UAL. N
♦ 01 GARO< m®g,�
♦ � �1•°•••e z �I
SIGN I Ullt ®O ® °tt0°
2'Q 1 L
1'9773 _
DATE a �
.a
•
s
ENGINEER CERTIFICATION NOTE OF STORMWATER QUANTITY CONTROL��•�
THE STORMWATER CONTROL STRUCTURE(S) SHOWN ON THIS PLAN IS(WILL BE)
DESIGNED TO REDUCE THE POST - DEVELOPMENT 1 -YEAR - 24 HOUR STORM
EVENT TO ITS RESPECTIVE PRE - DEVELOPMENT RATE.
GRAPHIC SCALE
20 0 Ha
( IN FEET )
1 inch = 20 ft.
80

(
QIDTHS VARY**
R /a VARIES VARY** REQUIRED MODIFICATIONS TO COG 04'O2 CURB
Avim
( -WIDTHS - -- -- _ N U' OF PRECAST C�ICiY;TE CUPS
-R/N' YA�� INLET TO ACCOA>'/OOATE COG rA4t2 ff TOP ��&
( 26' F-F ARIES e e o �i ALL AOITA# .re M AW ID W 1/2" t &9% C09 STD. /412 aT if"
INLETS IS SUBJECT TO THE 'POL.ICY
gpgp I 30' F-F •: :.•- am A" w STATEMENT FOR THE USE OF PRECAST
I 1 AG1ES f i� DUOr AMSOM CAN d?E STAADYD a0Y CONCRETE DRAINAGE STRUCTURES IN
O i - ! CITY MAINTAI/�D STOWI ttlL1IMAGE
BiIO�' JOtt� B4lQ a9' Li71Q07F BilaT. COG STD. 0412
94SOC A6iSmA/AY CAN O< 1!' 11 SYSTEMS' AVAILABLE IMA IN THE REVISED
A LAY CLAY r c ,A,R60 13' - 19' �S," - ' _ c : `'• :: • - +Ql � RR 000F S Oa9T 3'•6- !.l'� SUPS QY 16• ..'•• •i • • , 1. •.•A
PRECAST TOP 2007 ST �UINAGE SIGN NAIAIAL•
Q9AA'i� I 4i y •. " •. -. _ {�' (P •. 4 1/2' ON THE STOR101ATER M M%&EWT
BtiITX Q9 6Rls:T _ °' a' Ov ACCRO41LE
2.27% 2.27% _
w CVA�TE 60rY iMS' SMALL v 4% %," A S/ Q41C S7 A01�IEL �-
w (i F AUO AS&Uiff AkSaWY. vovv ov vvo 00000 ovvoovvvovv000vvvov {- 2•�% 2.60% :.• �;: + �yj S CONSTRUCTION _ M6V LEIIBTACA.7IMC ITE STALCTTIyE D/6t •• . . + •: _ CONCRETETITR AND USE HA PRECAST
_ o v v v +O 1 b •• -e'' !' °.: 6•, CONCRETE 5TFAHCTlAiE3 SHALL ADHERE
h vovvvovvvvvoovovoovovavovvovvoovv .?!• j �+0 AN EA7STIMI POE [�� S,W QTT AAD JMWIF ( „ -dy _ 9"- h TO ALL PERTINENT REQUIREMENTS OF
q ALL IAI9TAR ,A'AINTS ARE TrP. i MT 3• BTpE UNDER v v v v v v o o.v ! A SECTIDV aF PIFE Ea'XL ITT
IMF DIEJIE •� ( - _� -�l�c 7HE 9TAIA7Afm E402/403 BRICK NA901MY
A L 1%2' 3 JNrS �iF are MINIMUM -0' rti. a n , - iq
®OIC IoLK • E.tl°AABIQIt 87nW AS SA�MV AAO Ln1Si1BCT )W AHM -� -TW' : , t= • . -•i " . ^rC� f /2' EXP.
9.00' SF9. SA a°Ofai°w. 3' STONE UNDER �,,,• OI.I�IB/ OF i!E SRMCROE. itxB A A6V "'°�` -d �• - A •6 STHl1CTU#c8.
FM a9"M OYFR 3'-6' (ASE 2.00' S9.58 CURB MIMANUM
9.00 - SF9.5A i''..; .AIM (TYP.I STA161!/E. At]r S01tClGlES AE ADT 100E v MATERIAL •''.` STEEL DESIGN IS NOT SHOWN ON THIS
STEPS ON 16' CENTERS. 7.00' ABC 7i00. � 81/ILT aY nr GF IIF PINE " +_ Z '010,+0 JL 6,f/2- A RESPONSIBILITY S OF THE SHOWN S7E:t9 S/i1LL � 1N ALLYXD- • � 3 EABIIEEA AND SHALL BE SIbMN OF! cmw _ p AAEE M77N Gm STD. 0414. � LT,FF ELEYATIaV am � ng im lF B' £XPAMSI STD. c s B
AfOTE' SEALED SHOP IXiANIN65 SUBMITTED
DIFFERENTIAL FDA . CLOD . EYA>IQV AmisT caves S OILETS IS 51B.ESr m RE JOIAfr (TYP.) m FOR APPROVAL FOR USE IN THE
AOWAL CROW SECTION DIFFEfE�NTt.,e Fag COG S7D. 0Ut!? pl%ICy STAIHILdvT !Yl ITE DBE OfFl�T CITY OF GREENSBORO DRAINAGE
NORMAL CROWN SECTION IS 0.30' CROW SECTION Irs 0.30 SLMw sFCrILW I� m TF ONZOW 97R49'em IN@lly CURB NOTCH MODIFICATIONS FOR 412 -H TOP INFRASTRUCTURE.
AWJWAlAW STa9N SEMG9 S1SIE7!^.' AVARAKE
IN TAE finnO m7 Snm OZI Tuff amen
OW Muff =DEW "Its w AiSS maw, aY DF sawmIHI ANAfw"aff
STAA:7NVE 1)E' AW1tFACT1/bl 51ML1
/.N STALLING THE IN4_ET BOX, THE
3 31/4 STRAP /N SA91C3 ITS L06b 09 Al1AE av INSIDE FACE OF THE FRONT WALL IS TO FM RECAST a1M7E7E Away [F' TNIS
RF BMW AAD 941W aF DE SIATICII� aIDTHS VARY** aI0TH6 tlApYWW
LINE IA• WITH THE BACK OF CIAiB. S7ALCT1/A°, r7E AMAIFACAOV? &MALL
' STAi1t0Aflli CG948 INLET T/rFIdAT ass rA f412 - N
CAR W ro° racIL O 1(rS" of "C SSnXCnW.
lie - EAR RIV ATECA9T a>woyETe A107K1S a= 865 FAR 2' 6 ` CG098 6 &UTTER lal r4a2 tr1� OtET
PY.AN ( .f 0? ANNE 41Y
,. AHrEIarAL ST .& Irs � Mw av
26' F-F ARIES 1E I 30' F-F " :ARIES Q A 4 A A DF INSM AW 407SW OF IrF srRtclut: , .. � • ,.
y:. .a% ` •�•� QAS STD. H>2 Av WzPCl9 '•io :' . = f..•'•- .. AR�9M�A'JAWla rr� FT �SA1X.641
COs Sm. a4as a2 0407 stn c s s aAy4 IAIE7 /av _ _ _ _ _ _
MATE s f7AAAE / j - 6% pUX.I MA%•i 7 -4 a I (14031
/ a -.. a::... .
" :. d ° lP TO fDNL 6810. 1.6IA19 BNI(il' ANSTSIRY.
3.00• ASPHALT IYARIAOU -E v o v v v v v vv �✓ 3.00• ASPHALT (VAR1/,gt,E - v o 0 o v v o o °+ am a� Taa prey NT /O np : - • , I: - --
avvoovvvv voovoov oo ..'1 •• :A:1t a':: f9' � � '� ... • ?F••;d .�`'•: °+ � 5' PO• (707 (/IO2l
vvovov ovv 90000000 - �•! ,�� �,_�� -�,4 �,�•; -,'
6
j • 6 1/2'
voovoov voovoov 1 � J °• -'
v vs -v v o v o 1.00' 9F9. 5A v o v v v o v 1.00' SF9. 5A
2 0" S9.58 2.00' S9.58 i ••.:° ..i,
OLNNTITIES TF. IHT 7.00 ABC 7.00" A6C 7'+!- (may 1 d ... - ASPH
- 71/2- vv
Y.) H. Dill FT. 1EISllTA ' �iauc ' • Z - :..
ATED SECTION I-- �: 8 ' Tzs sm. i41r SrOAE a-'-= ; y- -�- THIS TALI TAN n f/2• SM
o. tslNr o.256 SUPERELEVATEO SECTION N RIBS s DT7YFR 6° h a : • ; .
TF4W THE STANDAfD 3402 Bmc • �°
,4• TO AOCOMODATE TfE 0412 -H TOP 5• vvvo -°
1' PVC B STONE
•tN j :• 3W -�-. B' WHICH IS f' THM9ZR THAN THE
= ELEV. RIFF %GRADE 0.EV. DIFF�. `.%GRADE • O v •B. STD. 0Af2 TOP. =U .. -.� 1' PVC
i SUES v BASE
-- :, -•: -. 3;.Ac y.: -{ _� :. S- • - +�` v •.. AT SUMP �•,
rxrAtl7E' 0.40' 1.82 1.92 2 n ••, II B CAST 5' DIA.
Q°O6CTI01B FQ4 61AAF PIPE SEE 7IE °SIFPET aSI6N STAAOAALNi AHMWL' PTBLISiEO SEF7E 0.50' ,� y OPENING OR
BY TTE CIrt OF 6REfA 's aPT. aF vuAL9vgrATIOV 0.50' 2.27 SEF TAE' 'STRi,FP LESISN STAAOAImS AHAfAOD • PLBLI57ED i I' -la' (5S7 U4021 STEPS AT LEAVE A NOTCH
1 PIPE SIZE C. N. R.C. IN 00WER TO LE 0WIAE rW LOCArrav OF SIDENALK$ BY TIE CITY OF 6AEEI15YI"'S DEPT. OF TMAASIMrA TIaV 0.60' 2.30 ND B NT B' -4' /7S'J --- (04031 !6' O.C. IN THE FRONT
SILEN.ILK nom AAt7 auss STRIP #10TH. 0 °60• 2,73 IN 47DM TO DE7 rAE TTE LOCATIaV OF SILEXUAC4 0 70• �: 260 4 /4W y, 9IMS ,f402 CURB INLET THROAT MODIFICATIONS ., 2._5. MALL FOR THE
12-
0.0m o.03z COTS SID A(18 -A HAS A S'LMVANY OF TAEIR 6UIDELINES SIQENALK MOTH AAV SUSS STRIP WIDTH. 8' B -o- (04tw TO ACCOMODA TE THE f412 -H TOP I m / ORAIN•
• • ,�� t5' 0.031 0.047 AS � STRIP OIN N.LOD'ATIaK SIdffi'NAL!( 0.70' 3. f8 ACD6� /�TF m SIC L�rr&4 SIDAE�KK 0.80' (, .3.06 2. 3 I
q
'•
,., • FLOW
q °' ••' °: .. y MIOTH AA17 GROSS STRIP MID7N. • � 1 _
!B' 0.044 0.005 O. BO' 3.64 0.90' 3.46
�� I
- _-T 0.90' 4.09 f.00' 3.85 /• 1 1'FIBPAT: 1
BUILD U P TO INVERT
SASS a TaaHOaFTr~ :- ..
STANDARD CL INLET T1519CJAT 412 -H IS FOR USE AT COMMERCIAL AND INDUSTRIAL WITH coHCrETe
2500 PSI 1.00' 4.t2i -� �� t+ Aa`d: ;r. • . • .- .
- .+;;;� INTERSECTIONS WHERE THERE IS THE POTENTIAL "-BUILD UP TO INVERT WITH CONCRETE --�- FOR 2'-0` CEM 19 &UTTER FOR HEAVY TRUCK TRAFFIC.
SECTIQN A A Sass 8 •„ �+T'ul I - - BECAUSE OF THE THICKER TOP, THIS DETAIL SHOWS
C / T Y ® F G R B R ® �+` / �» '/ ® F G R L� E Al 1� B ® R ® AI4IAm �• MODIFICATIONS THAT MUST BE MADE TO STD. #402 SECTION A -A SECTION B -e
STREET ACTION Sid?., �° �V. STREET SECTION SECTIQilt A A SECTIAN B-B AND CURB AND GUTTER TO ACCOMODATE THE THICKER TOP.
av4
s^TD. M9. -f f iilEN. : aF 4 a or 4
26' FACE TO FACE 8 : 9F4 C T Y O F G R E B N S B O R O c T Y O F O R E E N S B O R O +D 2 3601 0' FACE TO FACE 603 STD, AO, c/ T Y O F R E RNS B® O 0 Y O F G E E N B B O R O �
tH1EV.
ST d99IQK M . Y /XN1G� SM. o S IAI'.�ET DTI Y 40 •RIO. O6� CLi�9 IRKET ITf TORT! 40 06-W -07 ALM STD. AS?. REV. o�991ra7 STA BRICK MASawy Ste• �. ST PRECAST CONCRETE CURB INLET oe-02 3-0e
06-99 12-07 3 as-D7 12-09
IAlYET FM 24X24 dSyRATE 410 12°107 ST d�ild:K Y CU99 IA�ET 40 ®� o00-aW M 03 Os o� Iran 03 46 -071
o m to• z
.. 10° Ot/) m ° O
2- 6 2" 2 ~1' O'0 /o' -ow To���••• To^ M
�orH z o' 12-61 ^ FILL FACE 2" Q <� 2-- Gw 2" rJ 2'-
°
A MO•H O 70D I, FILL a ACE "O~C o C3 C0 O a - 2 -01 ,) II.-2" FILL FACE 2• w a TO 1 �'ruav V FRaV
m O'f1 -.1 B //
2-VI P 9' FILL FAZE ,JILL
V•9 1' -8° LL J O H T. H -Qty O N - FILL FACE 2 V o. 0' Ai E vAASlavF NT
2 = ` "V" @ 9° z Z �-•1 D o / 2-VI 8 9' FILL FACE _ ^ ^Y" @ B° •V "@ 1' -8" li- J Q- M1 Z
O O x m i -t B / p O r0 4.O' ®CMt7L1C
,L)O `y -a 9 -VI STii. FACE Nt 99" » ~ 00 x
-y.0��'' m H• W ILx AO -1 1 -VI STH. FACE N & e!
x tl) � O 6' f RA ' • ^! "Z^ T4 a Cl O p S. -M ITI = r. M1 0 9" ^H+ W ,mod' z �- = ,I -A-' J, !ry,4r-
y# #10TH z,.., o y-'n O1 • ° ® +ras erv..� 1 a F- x �` z W =_c_
0' 1 ` V _ " 8^ _ "Z° T4
,� ,� w ® 191 -ILo z►.,45 '0 �y N f-xl-z \ �,. y 5 P '
FAtf FAQ A 9 o t 3° DIA. DRAINS = Dr t-! O • 1 W '�p�Q
-i� o `a 8" ABOVE ® o 0008 AGi�M -1 w s H = -it B c��vti g r
a0$ O/a? - A °• FIOM LINE T4 n Z M-M -y o f I 3• DIA. DRAINS =o OC O M-4 e yrYb• c
yy ® t L r a a ° _ ~ FLOW ARM a 1D Ta 2 , NNU�Fq
PAdS?6V! #10TH Sv-7t [i.aaE ►+ . _ _ e _ T5 p 6' �^ d ® w i r N ti s
%a SN-tii Q26[� MB O
7 ? Z 8" 2 -N1 ®° ' C �Z gw 6 _� 8' I-• = O. & •'
s'4' ATM OMS5 RAT SET O RfM CONST. JT. BT , . IN)IIST. JT. et 2 -NI 3'-0w
N' AYD QUM FLff s � 13-j SECTION BB SECTION - AA
SECTION - BB SECTION - AA
ELEVATION SEE STD.# 838.45 FOR QBMRAL NOTES. .- �•q: °_ ,•p'U-
YECE 6114 r L17YSi�/ !B- ANIN +- - 8EE BTO.s 83s.4s FOB OEMENLLL NOTES. tid
2" Aft Al�AR►• EX7H1lSI1015 BILL OF wTQ1IAL FOR ENOIdALL ELEVATION 5
y,L vvvvovovvoovoov� m " e' -0' T3 TOP a BOTTOM REINF. STEEL 1 PIPE REINF. STEEL 1 PIPE �, �yQ
BILL OF MATERIAL FOR ENDIIW.L p Qestiv
BAR SIZE LENGTH No. Koff BAR SIZE LENGTH NO. EI9R
" , rF9 CIEAAOIlT S'1Nf.L ffi
• - m y'� Tt TOP a BOTTOM J Ate+
;� v ovvvvvv000vvvvvv000voo •••, - ?`• g7 m U B1 � 5` -6" 4 15 � Q � � 1.1 m 11NA;s• �/" T2•x A2'x s•DDUC PAD
nIn
aY N►D91141 t, v --- '- °+•••.a v o '
_ BBlAAf O Z z tt9fe a SPA. a 9"
6 #O4. q/ r- ' H TOP BARS IN iq B2 #4 4' -6" 4 12 LL ®= z I W B1 #4 5'-6" 4 15 x0 W Ar Ir m
DUN ►N4 ( I I Ot #7 9` -8" 2 40 (7 Z ® r- ( , 9 SPA. 9 9" ° io �, PIPE NOT B2 #4 4' -6" 4 12 U. ®� AQOr
a7gwm W o O M Z' BARS IN BNOgd r n z 1C x AY x s• [BYC !Ms
y`L ;r; A/1AE TAW �� 17 x o _ I H1 #4 7' -2" 10 48 w o Z dm: _ ® I TOP OF FOOTING u ,:4:, g G7 #7 9r -8" 2 40 Z W o e>aetc
r ' 46• AlV6iF f- m CO) L T4 H2 #4 5' -6" 2 7 3 W W p ° ^ BLDPE Ht #4 7 -2 10 48 r! O ISDMETAIC VIE#
AMD TD m ® -1 H3 #4 W -5° 4 ¢ W r m co _ _ _ T4 H2 #4 5' -6" 2 7 Q F 0)
�► a�AtsE/E A�IIN .N a7 9 q
(DI6 AM181 N 0 • H® N1 #5 3 -11 14 57 C It Na-N V O .4
`Z N Ic 0 N.® o Ni #5 3 -11 14 57 O m H
n 9 m -a = H3 #4 3' -5" 4 9 Q W
D o o , I �5" N2 #4 3' -5° 8 18 G 30 ° R ' " :i sralP MIM.s/N noHts
o N2 #4 3 -5 8 18 GRASS Cure
+9 z_ - D p �°' I �6^ r N c a mss
040PMC - Z
SLIT e° I C, O N T• e N TAPER DETAIL ¢ Z _ xmrM Tara s/M a" °° AETLAV FLARE 1. LETGTN OF m' IS VARIABLE. PE
6 SPA. 9 9" FILL FACE ' n v '@'• Q
PL LS MIDTH NIO A°:N:N AEI6NT NIaIN � Lt]V7+ltZLlAf, FAC109 rS of 3.0�•L� .
'+ HID. VAL t£ AL6/ DISTALL A L O r° 9 SPA. @ 9' 3-42, 2-43, 2 -V4 2 -V5 Ti #4 14 -6 6 58 ci ^ H m I O O N M L' OF H: MrIOV Is 5.0A MIN. AM 6-M WX.
m 2 SPA. 9 2' -8° M. , n 1 B SPA. 0 9" FILL FACE , rr z » 0ar 2. MAX. ^.,L(ri OV TIE FWES ARE fOX !I[tD
„':.Y: BE AJES/AIDI® f/4 6BiD m N• BAGS IN TOP AND T4 #4 8 .9 6 27 t- W m G 7" 8 SPA. @ 9" 3-42, 2 -V3, 2 -V4 2•YS Tt #4 14 -6 6 58 L% n 3. TTW:ATED mES MIIN vlsac aTV7RLST
4' PIAF FACE 2 -H1, 1-HS ® m 2 SPA. 0 2' -8' STS. < 6'-0' 0'-0. 6'-0' 2'-0' 4• 2' -O- 4' -0-
�'�rv.5i r m.�g MD m 1/B' A N FT. m m ®' 3' -9 BOTTOM OF FOOTING H3 T5 #4 2'-8" 40 67 O {{♦ JO #, 3, 3•_ N" BARS IN TOP AND FACE 2 -H1, 1 -H3 T4 #4 6' -9" 6 27 F- ® W To aF fLACFD FRW SIGY OF are 7D arr O1Tr s� Q PYc
•,'..v' '•�T` fRov Slav OF are
Amlf S[SE or n g mMH TIl%V O ► M r M S m m Z 3" BOTTOM OF FOOTING r n CO) J 6' -6' f -6" 5'-0 2'-6" 4' 2' °6' 4 -0' 4. 77E fW7BE aAS ~4 FAN EAPAASIOV
s�4 1/4° l�J FI 7E f +X o m P� 4 SPA. 9 1' -3" FILL V2 STS. FACE I'-G' Y1 #a 7 -3 6 29 CO m t,y ® Z FACE 3 -H1,r 1 -N2, 1L H3 4 �A. @ 9'•8° T5 #4 2, -8n 6 29 = 7'-0' 2''0' 5''0' 3'-0• 4- 3'-0' 4' -0- fi rN" cavorrE. XBff L
�yY �qgE O FiM2 3- Nt,t•H2,t -ip H2 H2 242,1-Y3,144.,1-45 Y2 #4 5' -10" 10 39 °'! CO m p PLAN Y2 SM. FACE Yt #4 7 -3 B 29 O H H
J ® �' 7' -6" 2' -6- 5'-0' 3' -6' 4' 3' -6' 3• -6-
m ®'ty V3 #4 5' -0" 6 20 (9 W6 O fA = N2 H2 2 -V2, t -V3 Y2 #4 5' -10" 10 39 J ® O
• DIA. m g o g V3 r . �. °� O ® •TI p 1 -Y4, 1 -Y5' , n 0' °O- 3 " -0' 5'-0' 4' -O' 4' 4' -O' 3..'_O.
3Y$• �- _ll a1 4' -o L1 L vq #4 4' -1M 6 16 W 3E � zt a' -o" Va #4 a -1 6 16 W
MIN. m ° e• u j V4 O z z V3 #4 5 -0 6 20 (7 �• OG
yy W 0 3J1t• B" I n Z = O 6' -6' 3' -6' S ° -0 6 N/A 6' 3' -0° Y9ESMOlMY'fal
= 7• V5 #4 W -2" 6 13 R'-0' 4'-0- 5'-0- 5'-0' N/A 5' -0' 2' -6-
yy = 7• vs Y5 A4 3 -2 6 13 {{I r -,--L V4 m �- euAnwr To Ar N89ae aowus THNa mw
O �* 3'_5w B" Z1 #6 4'-S" 6 42 r 3' -5" 1 vs
I rr � R' °5' 4''6° 5'-0' S' °5. N/A 5'-5' �'-6°
« « z3 2' -to" w w Z2 #5 4'-0" 6 25 « « @» Z1 #6 4'.8" s 42 CLEANOUT DETAIL
S� crzaN NT 8.7- T 'a• j . H1 8' -7" z3 2' -10• ie w Z2 #5 4' -0" 6 25 10' -0 5' -0 5' O' ­0-1 N/A 6' -0' Z' 6'
Z3 #4 3 -4 6 13 T 'Z" t OF s ApI msRWHc
pg N8 2' -90° 9' -1' N2 4' -19• 1. 1°
5 L E 9 7 R l 6 C E A t I A A I M M P A L M / PIM D T C w a < C G Y B T O e• LATERAL. u n n n n n ® 9 REINF. STEEL LBS. 555 HS r -10• �r 5 -N1 4 -N2 #4 3'-4" 8 13 c / T Y O F G R E E N S O O R O
�i H S N BARS Z n n n n n n 49 ST[1.N0. REV.
iR>$ ET 1 2 E TI EET 1 OF 2 N BAR$ N BARS z BARS REINF. STEEL CBS. 555
TAE METER fi" LQCATTaV MAY BE N7slWW aV #IaENIMI AV,&TTS BT TAE BWAEEA. °N•, •N•. a •z" BAN oIEN8I0116 ARE OuT TO arr. 2 � z WING ELEVATION CON. /C.S. EL OS. 7.5 EET z OF z STANUARO CONCRETE CUFB RAMP 4IB °9 -0 °5 0 l2
d° ® amaw tV AEG -LLW EETAOE N VALW 6 HM WT INSTEAD QF W JL=rIAIOS. 838.39 CON.(R.C. CU. YDS 7.1 836.39 838.39 "N'. "N ". A "z" BAR DIMENSIONS ME OUT To WT. 838.39 09 -07

1
4
TWO POUROUS BAFFLES TO
BE INSTALLED IN POND
HERE UPSTREAM OF WET DETENTION POND TO ACT AS A SEDIMENT BASIN
ONCE SITE HAS BEEN EXISTING Rip RAP BAFFLE
DURING CONSTRUCTION. POND IS TO BE CONSTRUCTED
STABILIZED, CLEAN OUT JL ` _ -;-_ _ -- _ __ AS SOON AS THE SITE HAS BEEN CLEARED AND A 6'
SEDIMENT ACCUMULATION - RIP RAP PAD / / / 1 ; rte• - _ _ - _� _ - -- SKIMMER ASSEMBLY W/ A 2.0' ORIFICE IS TO BE FITTED
FROM SKIMMER BASIN #1 AND Wt =6* / / _ :-' X�"" = s✓LT - T _ - JO THE 8 BOTTOM DRAIN ON THE 36 RISER. TWO
V
REMOVE POROUS BAFFLES ,.� �S IMMER BASIN BAFFLES VI12=28, i /J / ; : �'� --X'� -a _ POUROUS BAFFLES ARE TO BE ADDED TO THE POND _
AND SKIMMER ASSEMBLY. • _ - - -:`
.r.. �J
WITH 3 POROUS - � , )�,." • • ;; ••:' ;: - =�$� ,. -- _ ,. _ -- - ... _ _ JJPSTREAM OF THE RIP -RAP BAFFLE. POND TO BE • - -- -- - i � • � - - - - _.._ _ ._ __ -- - -- -_ , . •� �- "'' _�
INSTALL 810-CELL AS SHOWN TOP EL :774,00 La -26 _INSPECTED PERIODICALLY DURING CONSTRUCTION TO MAKE - - ON PLANS. - _.BOTTOM - 770.50 THICKNESS -26" � � � - ' - __ _ ._._ .
PN _
�- j - r� ; :; . •: • - --' ,- - - - - - � - --SURE THE POUROUS BAFFLES AND SKIMMER ASSEMBLY t - - -- "'
- CLASS I RIP RAP / / na �, •-,-: Cana - ` \R�Go _ _ _ - _'� tMPORARY
v
r, -- - --
�s 90- -
J ,- Try"' "^- - - BEEN COMPLETED ALL ACCUMULATED CONSTRUCTION HAS ABE - ` \NQ� J �.-- °� ! + SONS �t1C1►ON
/ / 7 +•,,, - - _ _REMOVED FROM THE EXISTING WET DETENTION POND AND V ` I C-•- -
\ r4-- IT IS TO BE RESTORED TO ITS ORIGINAL DESIGN VOLUME. 900
RIP RAP PAD ' / \� / / / i C - - _ T73• \ _ - --POUROUS BAFFLES ARE TO BE REMOVED. THE SKIMMER -
/ / -r-- - _ - s X EASEMENL -E'
r- ASSEMBLY IS TO BE REMOVED AND THE 8" SHEAR GATE
I / �' i a k -VALVE IS TO BE ATTACHED TO THE BOTTOM DRAIN AND
.Wt -18 - - -- [ - - - - --
W2=48� \ I / I ( / r �i n�• 0 it CLOSED. THE WET DETENTION POND IS TO THEN BE -
La =40' �- - - - - '" / 764 I _-RE BY A P�?FESSIONAL ENGIN�R. -
THICKNESS =36' ` -
CLASS it RIP RAP (\ c
770. ' ' T1'N E i _ - - - - -
t- - -
i�X_ � � _X_� -X� -- � -_ _. ✓ � / / i _
X X-�X X X-
\ �•- _' � ... �. , \ \ \ _ _.. 773. - / $4 it 14' � \ -" -� X822•'
\ ` -774 - \ - -
\ 4• CP
X82 _
7 -7
GRAVEL INLET
is x (TYPICAL) I \ \ \ �,
� \ \ i \ \. �w -;,• �~��' ,_ r x I � •/I 56 I / I � � I \ �9 SF \
1 \11 1
bill
ou
i I � \ ,\ c-G . \ S� \ \ \ \\ - c,0 0 �\ nI�r1IRaFn I Irullrc A 4$ i )
I
C__ 0.65 TEMP ®RAY BERM CHART NOTE: EX CEL SIORLIMMMBE NORTH AMMCANGRMENOREQUI /ALINIT, 1/22/2013
1-- 5.75 IN/HR NOTE: GRASS CAN WITHSTAND VELOCITIES OF6 FPS.
NOTE: MAX VELOCITY W ITHOUT A LINER PER N.C. EROSION MANNUAL IS 2 FPS.
SWALE
I
FLOW (C.F.S.)
VELOCITY
FT /sec)
FLOWDEPTH
(FT.)
CHANNEL-
SHAPE
LINER
STAPLE
PATTERN
CALCULATED
SHEAR STRESS
SHEAR STRESS
16.5•
16"
NO.
AREA
SLOPE ( %)
SIDE SLOPES
FLOW (C.F.S.)
(FT /sec)
(FT.)
SHAPE
LINER
PATTERN
SHEAR STRESS
SHEAR STRESS
7.69%
21
0.41
239
0.08
TRAPEZOIDAL
r BOTTOM
DS75
D
0.38
1.55
2
0.11
3.57%
2:1
0.41
1.87
0.10
TRAPEZOIDAL
z BOTTOM
DS75
TRAFROKAL
0.22
1.55
3
0.11
1
2.78
4.72%
2:1
10.39
4.28
0.71
z BOTTOM
I SC15OBN
D
209
210
4.28%
2:1
0.49
211
0.11
TRAPEZOIAL
Z BOTTOM
DS75
TRAPEZOIDAL
0.28
1.55
5
1 0.16
2
0.23
10.130/o
2:1
0.86
3.41
0.11
z BOTTOM
DS75
D
0.72
1.55
2040/o
2:1
0.67
1.85
0.16
TRAPEZOIAL
z BOTTOM
DS75
TRAPEZOE4L
0.20
1.55
7
0.18
3
0.10
2.68%
2:1
0.37
1.65
0.10
Z BOTTOM
DS75
D
0.17
1.55
La
CLASS 1
- E RIPRAP i2
I DETAIL - OUTLET PROTECTION
W �(� ILT FENCE O \ / / ��� •\ � I I 1 t�'l I I v I / \ /O WET DETENTION POND TO ACT AS SKIMMER BASIN
Q 1.\ � / TYPICAL) �'�, ,� d \ I SF 1 / G� I I �g / ` \ 1 \ DURING CONSTRUCTION. SEE SKIMMER BASIN
�',- 1 \ \ / 21 \ �o a \\ \ I I 1191991 / /�-(�P' I / \ \ / �/ \i�� CALCULATIONS FOR WET DETENTION POND BELOW.
[ll. 1 .` ' .. \ � . of \ \� / � \ o • .I� \ � I S I f \ � \
lei-' Z w SF \ i 1 ��� ,•� I / / ,1'S \"� I I I I 1 f 0• \\
( DRAINAGE AREA = 8.95 ACRES
DISTURBED AREA = 6.63 ACRES
S� ^D4' \ REQUIRED VOLUME = 1800 CF /DISTRUBED AREA
,SKIMMER BASIN #2 ; REQUIRED VOLUME = 11,934 CF
/ a �\ t \ I \ 1 10' 1 / \ \ \ \ \ fir+ I VOLUME PROVIDED (768 -771)= 14,475 CF
WITH 3 POROUS BAFFl.ES' / $ , \ �
_ TOP EL - 780.00 / \ \ \ \ \ 2 / 1 1 \ d \ �` `: \ / / �
4- � .BOTTOM EL, -77s \\ \ \ \ \ ��j1 \\ � SURFACE AREA REQUIRED = 325 SF 10 -YR INFLOW
h ' 1 / / \
SE � P /' ;� I �° 193 \ �o. / / 3 1 \ \ o \ SURFACE AREA REQUIRED = 325 SF X 45.10
\ �I 1 J o \ \ x \ \ \ SF \ > \ /\ SURFACE AREA REQUIRED = 14,658 SF
AV \ SURFACE AREA PROVIDED = ±15,743 @ AT EL. 776.50
(EMERGENCY SPILLWAY)
SKIMMER SIZED FOR ±2.5 DAY DEWATERING TIME
(SEE SIZING CHART BELOW)
ONCE LOTS 25 -29 HA BEEN' /
CLEARED, STOCKPILE EXCESS CUT IN \ / ; / \o
LOT 25 AROUND SKIMMER BASIN 2. / 1 / \ \ \ ' �� \ \ 0� \ \
\ # # \. \ \ 0
�• 8" SKIMMER TO BE
,ONCE SITE HAS BEEN STABILIZED, \ �, �/ +f / / ' . / \ \ ` \ \ 1
REMOVE SKIMMER BASIN #2 AND \ ` / /, ^ \ \\ \ \ \ \ \ \ \ \ �\ \ \ \\ /\ \ \ \ \ DMEWA RIG ORFICE A"" '�""b" 6* ASSEMBLY R
2 REMOVE POROUS BAFFLES AND \ �' /: / \ \\ \ i \ \ X \ \ \ PER FIGURE 6.64B
KIMMER ASSEMBLY. BRING PAD #25 ' \ % �/ / / / // % r - \ \ \� ` \ / d\ • ^ • \ \ \ \ \ \ \ OF THE NORTH
\� \ / \ 6 CAROLINA EROSION C Enclosure
0 GRADE WITH PREVIOUSLY __ \' Ir \ \ \� \ \/ \ \ �. \ �� , \ \ \� \ AND SEDIMENT
TOCKPILED DIRT. _ �\ \ \ 1 O // / / f / �\\ \ \ \ \ \ \ / / \ \d �\ \ \ \ 1 \ Sh \ \ CONTROL PLANNING
• - _ _ `�, \\ \ // / / \ \ `� \�� \� \ \ \ \ �g
\ \ \, \ 6C �\ ND DESIGN MNU Water ERSPECTIVE VIEW Un
PVC Elbow Pi Schedule 40
PVC End vve vent
�� \ �.. \ \'\ \ \ ` \: - ._ - I \ \ \ �� \ / \ d ` •o, \ \ \ �` \ \ ( Water Surface
PVC End
Cap
_f - •C I ,I , I \ \ \ \ \ d \\ \ \ ♦ ^V \\ \ \ Schedule 40 \
_ 30 SS. -r '\ \� % ` •� \ \ \® \ �.. I \ PVC Pipe PVC Pipe
�.� ,_p\ PVC Ta Onfi
-. . -, \ ,•,�- - ��\ / i \ \ \ \ \ \/ t' Holes e \ PVC Tee e
Urdermde flexible Plate
se
ESMT:" ,�' �.: \ �..�\y\ \ \ \, \ t �I ` \ \ \ \ \ \ \ 1 , \ \ \ �o� \ 3 \ �� e
T \� Bottom Surfxe
END VIEW
1' \ Fi20NT VIEW
\ \
f \ \
Figure &64a Schematic of a skimmer, from Pennsylvania Erosion and Sediment Pollution Control Manual,
March, 2000.
\ 1 \ \ \ \ \ \ \ SF X
\\ \
- - - -- - -- - - -- - \ \
C= 0.65 PERMANENT SWALE CHART NOTE: Ec ELs ORLmm -rowNORTHAmmomo#tmoReomALgir. 21112013
1-- 5.75 IN/HR NOTE GRASS CAN WITHSTAND VE OCITIES OF 6 FPS.
NOTE: C=.35 FOR UNIMPROVED CLEARED AREA NOTE: MAX VEOCITY WITHOUT A lUNER PER N C. EROSION MANNUAL IS 2 FPS.
_PERMMEI5_
SWALE
NO.
DRAINAGE
AREA
SLOPE
SIDE SLOPES
FLOW (C.F.S.)
VELOCITY
FT /sec)
FLOWDEPTH
(FT.)
CHANNEL-
SHAPE
LINER
STAPLE
PATTERN
CALCULATED
SHEAR STRESS
SHEAR STRESS
16.5•
16"
CLASS B
23
72"
414.43
40'
18'
46'
36"
CLASS 11
1
0.11
7.69%
21
0.41
239
0.08
TRAPEZOIDAL
r BOTTOM
DS75
D
0.38
1.55
2
0.11
3.57%
2:1
0.41
1.87
0.10
TRAPEZOIDAL
z BOTTOM
DS75
D
0.22
1.55
3
0.11
213%
21
0.41
1.59
0.12
TRAPEZOIDAL
z BOTTOM
DS75
D
0.15
1.55
4
0.13
4.28%
2:1
0.49
211
0.11
TRAPEZOIAL
Z BOTTOM
DS75
D
0.28
1.55
5
1 0.16
3.77%
21
0.60
218
0.12
TRAR ZOOkL
r BOTTOM
DS75
D
0.29
1.55
6
0.18
2040/o
2:1
0.67
1.85
0.16
TRAPEZOIAL
z BOTTOM
DS75
D
0.20
1.55
7
0.18
1.89%
21
0.67
1.81
0.16
TRARZOIDA .
z BOTTOM
DS75
D
0.19
1.55
8
0.15
2.00%
2:1
0.56
1.73
0.14
TRAPEZOIDAL
z BOTTOM
DS75
D
0.18
1.55
9.
0.27
10.07%
21
1.01
3.60
0.12
TRAFR20DAL
z BOTTOM
DS75
D
0.78
1.55
10
0.30
8.90%
2:1
1.12
3.59
0.14
TRAPEZOIDAL
z BOTTOM
DS76
D
0.76
1.55
Figure 6.64b Skirr
orifice diameter as
of the basin volumi
\\ 9 \O '`., \ • \ , \ M� (` \ \ \ \ ,96, \ \ \ �v1P basin dewatering ti
DISTURBED
0o MITS (TYPICAL)
USE 2' ORIFICE
FOR t2.5 DAY
,Q DEWAIERING TM
\ \ ,
OWNER /DEVELOPER:
7CrisKats, LLC
7B CORPORATE CENTER COURT
�. . a \ \. � � a �• _ �. - _ --- � � � � \�. \ � � �%.® � ®� GREENSBORO, NC 274.08
TELEPHONE: 336 - 282 -4127
FAX:[phone]
CONTACT: HERB PARKS
EMAIL ADDRESS: [e-mail]
2
OUTLET PROTECTION
FES# SIZE FLOW(cfs) La (ft) W, W Thickness (ft) RIP -RAP
5
15'
0.71
10'
3.75'
12'
13"
CLASS B
22
30"
31.21
14'
7.5'
16.5•
16"
CLASS B
23
72"
414.43
40'
18'
46'
36"
CLASS 11
GEOTEXTILE LINER TO BE
INSTALLED UNDERNEATH
RIPRAP PAD
ON -SITE SOIL TYPES: CkB, PoC, POE, Ppc2, PpE2
HYDROLOGY GROUPS: A, B
TOTAL DISTURBED AREA
EROSION CONTROL
LEGEND
- X X X -
TEMPORARY SEDIMENT FENCE
CONSTRUCTION ENTRANCE
BERM 1 DB-
TEMPORARY DIVERSION BERM
xX- X -X -X
STONE WEIR OUTLET IN SILT FENCE
DISTURBED LIMITS
TEMPORARY INLET PROTECTION
PRE DEVELOPMENT DRAINAGE DELINEATION LINE
SWALE 2
-.� - R
PERMANENT DRAINAGE SWALE
ChB
SOIL LINE (TYPICAL)
GRAPHIC SCALE
( IN FEET )
1 inch = 40 ft.

STEEL POST DRIVEN
INTO GROUND (t24") _
NCDOT #5 or #57
washed stone
INCDOT #5 or #57
washed stone -
4' max
----------- ° - - - - -- - --
HARDWARE CLOTH AND GRAVEL
INLET PROTECTION
NOT TO SCALE
TEMPORARY SEEDING
DEFINITION
Seeding disturbed areas with annual grasses or legumes to provide temporary ground
cover to lessen soil erosion.
PURPOSE
To temporarily stabilize graded cut and fill slopes that cannot be seeded with permanent
vegetation within thirty days after completion.
To temporarily stabilize graded areas of bare soil where permanent vegetative cover is
not needed or where grading has not been completed and permanent seeding will be
done later.
CONDITIONS WHERE PRACTICE APPLIES
Where bare soil has been exposed by grading, and vegetative cover is needed for one
year or less. May include such areas as temporary sediment pond, diversions, soil
stockpiles, building pads, rough - graded road banks, etc. It is also used to provide a
temporary perimeter buffer.
PREPARATION
Prepare seedbed by ripping, chiseling, harrowing, or plowing to depth of at least six
inches so as to produce a loose, friable surface. Incorporate 750 -1,000 pounds 10-10-
10 fertilizer and up to two tons of dolomitic lime per acre (Note: Lime may not be needed
if a soil test indicates a pH of 6.5 or higher). Mulching is required according to the same
specifications as for permanent seeding unless waived by Soil Scientist. Select seeding
mixture and best planting dates from Table 12.
c
TABLE12
TEMPORARY SEEDINGS
SEEDING MIXTURE SEEDING RATE (LB /ACRE) PLANTING DATE:
Rye Grain and 120 lbs. Jan. 1 - May 1
Kobe Lespedeza 50 lbs.
German Millet or 40-50 lbs. May 1 -Aug. 15
Sudan Grass
Rye (Grain) 120 lbs. Aug. 15 - Dec. 30
(may substitute cats
before Oct. 1 or wheat
from Oct. 1 -Nov. 15)
Annual ryegrass 40 lbs. Aug. 15 - Nov. 30
Weeping Lovegrass 1/ 5lbs. May 1 -Aug. 15
I/ Weeping Lovegrass is a perennial grass but is included here because of its
adaptability to poor soil conditions and droughty sites.
ME MEN
19 -gtwge hardware cloth
(a mesh openings)
T__
2'
`''I 16"
1
POROUS BAFFLE IN ROCK DAM- ZSEDIMENT PIT
DETAIL
SCALE: NOT TO SCALE
Table 6.108
Temporary Seeding
Recommendardorm for Late
winder and Early Spring
Seeding mixture
spe•ies Rata (Maas)
Rye (grain) 120
Annual despeders (Kobe in
Piedmont and coo" Plain,
Korean in Maintains) 50
On* annual lespailm when duration of temporary cover is not to
extend beyond .hare.
Seeing dater
Monmtse- -Above 2500 feet Feb. 15 - May 15
Below 2500 feat Feb. 1- May 1
Piedmont -Len. 1- May 1
Coastal Plain -Dec. 1 -Apr. 15
Soil amendments
Follow recommendations of soil testa or apply 2,OD0 biacre ground
apdadkaal Isnestone and 750 b(acre 10-10.10
Mulch
Apply 4,000blacrestrew. Anchor straw by lacking with asphak nailing.
or a mulch anchoring tool. Adisk with blades set nearly ~A can be
used as a mulch anchoring Md.
Maintenance
Rehitill if growth is not fully adequate. Reseed, retertirme and mulch
immediately fallowing erosion or other damage.
Table 6.10b
Temporary Seeding
Recommendations for
Summer
COMPACTED
SOIL
2' -O'
MIN.
1 6' -0"
(TYP.)
ST►
cs OW
CONSTRUCTION SPECIFICATIONS
NORTH
J. REMOVE AND PROPERLY DISPOSE OF ALL TREES. BRUSH. STUMPS,
AMERICAN
AND OTHER OB,IECTIONAL MATERIAL.
GREEN
EROSION CONTROL PPaduefe
2. ENSURE THAT THE MINIMUM CONSTRUCTED CROSS SECTION
14W NIGIMY 41 110M
MEETS ALL DESIGN REQUIREMENTS.
�20,6,°,
3. ENSURE THAT THE TOP OF THE BERM IS NOT LONER AT ANY POINT
2.47 AC
THAN THE DESIGN ELEVATION PLUS THE SPECIFIED SETTLEMENT.
1615 SF
4. PROVIDE SUFFICIENT ROOM AROUND DIVERSIONS TO PERMIT
©
MACHINE REGRADING AND CLEANOUT.
soorn Nice
5. VEGETATE THE BERM IMMEDIATELY AFTER CONSTRUCTION,
4' (t.Ztss) 0
UNLESS IT NILL REMAIN IN PLACE LESS THAN 30 WORKING DAYS.
CAROLINA EROSION
MAINTENANCE
O 0
INSPECT TEMPORARY DIVERSIONS ONCE A WEEK AND AFTER EVERY
3.T (1.0m)
RAINFALL L. IMMEDIATEL Y REMOVE SEDIMENT FROM THE FLOW AREA
I O O 0
AND REPAIR THE DIVERSION BERM. CAREFULLY CHECK OUTLETS
stowUon of Seam Stitch will eLocation of Sean Stitch will ('�")
AND MAKE TIMEL Y REPAIRS AS NEEDED. WHEN THE AREA PROTECT-
product tpw Ana. product Wc
ED IS PERMANENTLY STABILIZED, REMOVE THE BERM ANO THE
3.7s Smims PER SQ. Ye.
(43 SrAPIES PER SM M)
CHANNEL TO BLEND NITN THE NATURAL GROUND LEVEL AND APPRO-
For Wr pk- slapiss/dokes
PRIATELY STABILIZE IT.
through each of the YELLOW oalorod dab.
Ara mantas con d stotetno OUT de
No? Craws do b 'claw loo grapes estsoos
Are mantes con el ditamo Dar ds
North American Gsan, clove loe grepw /ostaws
I ry OF GREENSBORO
a trews de los pwkas d. ootores Aneariao
STD. NO.
I REV.
rr��rl�l,rra f; crci l��i�
SEDIMENT CROSS SECTION VIEW
NTS
sKnom To BE
NORTH
DRAINAGE
AREA
AMERICAN
1160E WIrK A AM Assembly
GREEN
EROSION CONTROL PPaduefe
4
14W NIGIMY 41 110M
DOT SYSTEM
�20,6,°,
STAPLE PATTERN GUIDE
2.47 AC
PARA EL ENGRAPADO
1615 SF
a
D
O
©
02"-0- m- -r-.r (saw- taswn)
'Y-� (sane- t23oes)+ ,r k ° (Ra12.som) "2'-s° Oom- 12_4m)
soorn Nice
1tY (O.Zim)
4' (t.Ztss) 0
4' (1.2m) • • • ,,, Sadm
CAROLINA EROSION
'C' Ersclosure
O 0
2r�QAne)
3.T (1.0m)
I O O 0
• •
stowUon of Seam Stitch will eLocation of Sean Stitch will ('�")
an
product tpw Ana. product Wc
3.4 STAPLES PER 90. YO.
(4.I Sgr�APfiS PER SQ. M)
3.7s Smims PER SQ. Ye.
(43 SrAPIES PER SM M)
For Dater Sys plow staples /stakes,
For Wr pk- slapiss/dokes
through each of #is WMrE oobrod dots.
through each of the YELLOW oalorod dab.
Ara mantas con d stotetno OUT de
No? Craws do b 'claw loo grapes estsoos
Are mantes con el ditamo Dar ds
North American Gsan, clove loe grepw /ostaws
punntee de ook,reo
a trews de los pwkas d. ootores Aneariao
SEDIMENT CROSS SECTION VIEW
NTS
sKnom To BE
DISTURBED
AREA
DRAINAGE
AREA
VOLUME
REQ'D.
1160E WIrK A AM Assembly
BOTTOM
DIMEN.
VOLUME PROV'D./
SURFACE AREA PROV'D.
ORIFICE
DIAL..
DrFATEMG ORFICE
1
1.23 AC
2.47 AC
PER FIGURE 6.60
1615 SF
-=40, W =20'
DEEP
3624 CF/ 1664 SF
OF T8E NORTH
5' WIDE
2
Figure 6.64b Skimmer
3.86 AC
CAROLINA EROSION
'C' Ersclosure
=34', DEEP
orifice diameter as a function
C !'
5' WIDE
i -T
of the basin volume and
REV.
CONTROL PLANNING
basin dawatertg time.
AND DESIGN MANUAL water
- BAfWrt L Av,E1
PERSPECTIVE VIEW
COMPACT THDROUGht Y
PVC End
cap Elbow PVC Vent
Schedule 40
'SFCWO arm r,MPArTFO SOT! Pin
vtle ape
sL ICING WjrhVD ' MAY Al 50 BF :13FO
TO INSTALL SIL T FENCE ISEE A &FAW
2 -DAY
t�S
AV£
UAPAO
ac
DEWATERMIG
5
PVC
PERIOD
USE COG S10/432 57&lF DITCH CAECA
CUP
fON FENCE OVILL15 AI A MAXIWM,W !00 r l
SPACING AND AT ALL NATURAL DRAINAGE
Schedule 40
AREAS, (SEE SHEET 2 OF 2r
raiC Tae
PVC Pipe PVC Pipe
2
t' I-Wks in PVC Tee
orifice
3
Underside Flexible
Plate
6
H*s6
7
e
to
Bottom Surface
END VIEW FRONT VIEW
Figure 6.64a Schematic of a skimmer, from Pennsylvania Erosion and Sediment Pollution Control Manual,
Watch. 2000.
■1 ■�
lit,
S dairs 10 days
I
i
�SIII���Nf1111��� ■�s1
VOLUME REQ'D= (1800 CF) (DIST. AREA)
SURFACE AREA REQ'D= (325) (Q10)
Seeding mxture
sped" Rate (Ib/acre)
German millet 40
In the Piedmont and Mountains, a small- stemmed Sudangrass may be
substituted at a rate of 50 Iblecre.
Seeding dates
Mamtairo -#AW 15 -Aug. 15
1 -Aug. 15
Coastal 15 -Aug. 15
Soil mrandm rris
Follow of soil tests or apply 2,000 Iblacre ground
agricultural Imestane and 750 Iblacxe 10 -10.10 fertilizer.
Mulch
Apply4,0001b/aco straw. Anchor straw by tacking with asphalt, netting,
or a m ulcn anchoring tool. A disk with blades set nearly straight c a n be
used as a mulch ancdhorkv tool.
Maintenance
Ref fize if growth is not duly adequate. Reseed, refertilize and mulch
Immediately followkV erosion or other damage.
• 1111116-y-N.
Table 6.10c
Temporary Seeding
Recommendatlons for Fall
Seeding mixture
Species Rate (Iblacm)
Rye (grain) 120
Seeding dates
Mountains -Aug. 15 - Dec. 15
Coastal Plaint and Piedmont -Aug. 15 - Dec. 30
Soo amendments
Follow soil tests or apply 2,000 Ib/acre ground agricultural lhntesionte''''
and 1,000 b/acre 10 -10-10 fertilhoef•.
Mulch
Appy4,0001b/acre straw . Ancfarstrawbytacking with asphalt netintg,'
or a mulct anchoring tool. A disk with blades set nearly straight can be
used as a mulch anchoring tool.
Maintenance
Repair and ree damaged areas immediately. Topdress with 50
lb/acre of nitrogen In Marla. If it is necessary to extent temporary
cover beyond June 15, overseed with 50 Iblscxe Kobe (Piedmont and
Coastal Plain) or Korean (Maintains) lespedeza in late February or
early March.
METAL FENCE POST
DISTURBED
AREA
DRAINAGE
AREA
VOLUME
REQ'D.
SURFACE
AREA REQ'D.
BOTTOM
DIMEN.
VOLUME PROV'D./
SURFACE AREA PROV'D.
ORIFICE
DIAL..
SPILLWAY
1
1.23 AC
2.47 AC
2214 CF
1615 SF
-=40, W =20'
DEEP
3624 CF/ 1664 SF
1"
5' WIDE
2
1.91 AC
3.86 AC
3438 CF
2525 SF
=34', DEEP
CF/ 2574 SF
1.5''
5' WIDE
VOLUME REQ'D= (1800 CF) (DIST. AREA)
SURFACE AREA REQ'D= (325) (Q10)
Seeding mxture
sped" Rate (Ib/acre)
German millet 40
In the Piedmont and Mountains, a small- stemmed Sudangrass may be
substituted at a rate of 50 Iblecre.
Seeding dates
Mamtairo -#AW 15 -Aug. 15
1 -Aug. 15
Coastal 15 -Aug. 15
Soil mrandm rris
Follow of soil tests or apply 2,000 Iblacre ground
agricultural Imestane and 750 Iblacxe 10 -10.10 fertilizer.
Mulch
Apply4,0001b/aco straw. Anchor straw by tacking with asphalt, netting,
or a m ulcn anchoring tool. A disk with blades set nearly straight c a n be
used as a mulch ancdhorkv tool.
Maintenance
Ref fize if growth is not duly adequate. Reseed, refertilize and mulch
Immediately followkV erosion or other damage.
• 1111116-y-N.
Table 6.10c
Temporary Seeding
Recommendatlons for Fall
Seeding mixture
Species Rate (Iblacm)
Rye (grain) 120
Seeding dates
Mountains -Aug. 15 - Dec. 15
Coastal Plaint and Piedmont -Aug. 15 - Dec. 30
Soo amendments
Follow soil tests or apply 2,000 Ib/acre ground agricultural lhntesionte''''
and 1,000 b/acre 10 -10-10 fertilhoef•.
Mulch
Appy4,0001b/acre straw . Ancfarstrawbytacking with asphalt netintg,'
or a mulct anchoring tool. A disk with blades set nearly straight can be
used as a mulch anchoring tool.
Maintenance
Repair and ree damaged areas immediately. Topdress with 50
lb/acre of nitrogen In Marla. If it is necessary to extent temporary
cover beyond June 15, overseed with 50 Iblscxe Kobe (Piedmont and
Coastal Plain) or Korean (Maintains) lespedeza in late February or
early March.
METAL FENCE POST
NOTES•
r4 GAU6£ MINIS W
i
CONTROL FARRTCS TO BF B' - 0' ON CENrFR.
hW MIRE
(
EROSTOIf Crd'sTROf, FABl7TC
FABRIC.• 3' -0' IN 11IDTH (MUST BE STAACARO 5PECIFICArIONS
Z
51OAC' (1F USED) 04 MASHED 5TOft' PLACED 1'-0' Lt 4P e I SIL .' f LNWL.
-SPI. ICES IN FABRIC SHOU10 BF OVFM APPED A MTN. OF c Fr
MAINIAIN ADEGUAl6 u1SMACE AOR
- MAXIAN DRAINAGE AREA - 114 ACRE PER 100 FT OF FENCE FOR 2r &? LESS SLOPE.
-SILT FENCE TO BE• HEMDVE47 AF TEN CONSARUCTION IS L' tIL AS O1HLC!£4; BY
SEOIAKNT REMOVAL 6 MAI1TLhA1NC£
ti
PAGE 1 Or 2
c iT Y ®F G-R EEN S B 0
i -T
STD. NO.
REV.
SILT FENCE DETAIL
£X. EAR 7t
- BAfWrt L Av,E1
COMPACT THDROUGht Y
SILT FENCE Mtd6T 8E £NTW..NGH£0 AND
'SFCWO arm r,MPArTFO SOT! Pin
sL ICING WjrhVD ' MAY Al 50 BF :13FO
TO INSTALL SIL T FENCE ISEE A &FAW
N
AV£
UAPAO
DESIGN PLANNIN DESICrf
i
MANIiAL ' SECTTON R. 6,P) .
USE COG S10/432 57&lF DITCH CAECA
fON FENCE OVILL15 AI A MAXIWM,W !00 r l
SPACING AND AT ALL NATURAL DRAINAGE
AREAS, (SEE SHEET 2 OF 2r
NOTES•
- SPACING OF POSTS USING HOG NIKE WITH APPROVED EROSION
CONTROL FARRTCS TO BF B' - 0' ON CENrFR.
POST.' METAL 7 --POST 5­0' OR 6'-0- IN HEIGHT DEPEAwDING ON FILL
SLOPE 00N. 1. 33 1 8/1F STFFI. CONSTAt rTT^tr) .
FABRIC.• 3' -0' IN 11IDTH (MUST BE STAACARO 5PECIFICArIONS
FOR SIL T FENCE - ASTM D ) MITH 12' BURIED IN T.nENCH.
51OAC' (1F USED) 04 MASHED 5TOft' PLACED 1'-0' Lt 4P e I SIL .' f LNWL.
-SPI. ICES IN FABRIC SHOU10 BF OVFM APPED A MTN. OF c Fr
- MAXIAN DRAINAGE AREA - 114 ACRE PER 100 FT OF FENCE FOR 2r &? LESS SLOPE.
-SILT FENCE TO BE• HEMDVE47 AF TEN CONSARUCTION IS L' tIL AS O1HLC!£4; BY
l +fE CONSTRUCTION INS%EECTOR.
PAGE 1 Or 2
c iT Y ®F G-R EEN S B 0
STD. NO.
REV.
SILT FENCE DETAIL
?lc9
CONSTRUCTION ENTRANCE DETAIL
NTS
Aaamw AW JEW-MARY aNNI OV RAM'Lr art
AYD6t r AwwT ar saw7m a m ar mmme
At r d rla7. 07Y or �x®a1G a1Ga14W am
210 2= ^SP11 E R1A9alCA>gS'
NOTE, SMOX711M STOE SHALL BE
CWTRd. PURPOSES.F� EFOS11l1 BED05 O CDNTR� STDE SttAl i ��_T_7 S'
DE as L7i fS7 sTmlE.
CONSTRUCTION NOTES
1. EROSION CONTROL MEASURES ARE TO BE MAINTAINED BY THE OWNER
UNTIL GROUND COVER HAS BEEN WELL ESTABLISHED. DISTURBED AREA
MUST BE STABILIZED WITHIN ANY PHASE OF GRADING.
2. THE APPROVED COVER AND WATER CONTROL PLAN MAY BE AND WILL
BE REVISED DURING CONSTRUCTION WHEN IN THE OPINION OF THE
CONSERVATION ENGINEERS OR INSPECTORS THAT ADDITIONAL MEASURES
FOR THE PREVENTION OF SIOL LOSS ARE NECESSARY.
GENERAL PLAN NOTES
1. SOIL EROSION CONTROL DEVICES MUST BE INSTALLED INITIALLY AFTER THE
GRADING PERMIT IS ISSUED AND ROUGH GRADING STARTS. PLANNING AND
DEVELOPMENT STAFF WILL CHECK THESE DEVICES FOR PROPER INSTALLATION
AND COMPLIANCE WITH THIS PLAN. A "CERTIFICATE OF PERFORMANCE" WILL
BE ISSUED. THIS CERTIFICATE MUST BE BROUGHT TO OUR INSPECTIONS
DIVISION BEFORE A BUILDING PERMIT WILL BE ISSUED.
2. ALL EROSION CONTROL DEVICES ARE TO BE INSTALLED IN ACCORDANCE WITH
THE APPROVED , PLANS AND SPECIFICATIONS. ANY CHANGES ARE TO BE APPROVED
BEFORE CONSTRUCTION BY CITY OF GREENSBORO PLANNING AND DEVELOPMENT,
OFFICE OF SOIL SCIENTIST. ADDITIONAL DEVICES WILL BE REQUIRED IF NECESSARY.
3. IF FILL MATERIALS ARE BEING BROUGHT ONTO THIS PROPERTY OR IF WASTE
MATERIALS ARE TAKEN FROM THIS PROJECT, THIS INFORMATION MUST BE DISCLOSED
AND SHOWN ON THE EROSION CONTROL AND GRADING PLAN. BORROW AREAS AND
DUMP SITES ARE CONSIDERED TO BE PART OF THIS PROJECT.
4. UNDER THE CITY OF GREENSBORO SOIL EROSION AND SEDIMENTATION CONTROL
ORDINANCE (SECTION 19); AGENTS, OFFICIALS, OR OTHER QUALIFIED PERSONS ARE
AUTHORIZED TO PERIODICALLY INSPECT THE SITES OF LAND - DISTURBING
ACTIVITIES. OBSTRUCTING, HAMPERING OR INTERFERING WITH SUCH INSPECTIONS
CARRIES A $500 PER DAY CIVIL PENALTY: THE INSTIGATION OF THIS CIVIL
PENALTY REQUIRES NO PRIOR NOTICE.
5.IN AN EFFORT TO MINIMIZE EROSION AND EXPOSURE TIME, EASEMENT AREAS
SHALL NOT BE GRUBBED OR GRADED UNTIL UTILITIES ARE READY TO BE INSTALLED.
ALSO, THE IMMEDIATE SEEDING OF DISTURBED EASEMENT AREAS AFTER UTILITIES
ARE INSTALLED WILL ELIMINATE MANY PROBLEMS. EASEMENT AREAS WHICH CROSS
OR ARE ADJACENT TO WATERCOURCES SHOULD RECEIVE SPECIAL CONSIDERATION.
6. NO LAND - DISTURBING ACTIVITY SHALL BE PERMITTED IN PROXIMITY TO A LAKE OR
NATURAL WATERCOURSE UNLESS A BUFFER ZONE IS PROVEDED ALONG THE MARGIN OF
THE WATER BODY OF SUFFICIENT WIDTH TO CONFINE VISIBLE SILTATION WITHIN
THE TWENTY -FIVE PERCENT OF THE BUFFER ZONE NEAREST THE LAND - DISTURBING
ACTIVITY.
7. IF AN EXISTING POND IS DESIGNATED AS A PERMANENT WATER QUALITY POND, ALL
SEDIMENT DEPOSITED IN IT DUE TO CONSTRUCTION MUST BE REMOVED WHEN THE
SITE HAS BEEN STABILIZED. THE POND MUST BE CLEANED OUT BEFORE THE
GRADING PERMIT IS FINALIZED.
SEEDING SPECIFICATIONS
CITY OF GREENSBORO - SOIL EROSION CONTROL SECTION
Apply 4000 lbs. agricultural limestone per acre.
Apply 1000 lbs. 10 -10 -10 fertilizer per acre for grass seeding.
Lime and fertilizer are to be disked into the soil surface to a minimum depth of 4 inches.
Late Winter - Early Spring
A: Grass:
(1) Tall Fescue - 150 lbs. per acre.
B. Grass - Legume Mixture
(1) Tall Fescue - 100 lbs. per acre plus Serecia Lespedeza (scarified) - 60 lbs. per
acre.
(2) Tall Fesue - 100 lbs. per acre plus Crownvetch - 25 lbs. per acre.
Early Spring - Late Spring
A. Grass:
1) TAII Fescue - 150 lbs. per acre
2) Tall Fescue - 100 lbs. per acre plus Weeping Lovegrass - 5 lbs. per acre.
B. Grass - Legume Mixture
(1) Tall Fescue - 100 lbs. per acre plus Serecia Lespedeza (scarified) - 60 lbs. per
acre.
Summer
A. Grass:
f 1) Tall Fescue - 150 lbs. per acre plus Weeping Lovegrass - 5 lbs. per acre.
2) Weeping Lovegrass - 5 lbs. per acre plus Browntop Millett or Sorghum -Sudan
Hybrids - 50 lbs. per acre.
B. Gross- Legume Mixture
(1) Weeping Lovegrass - 5 lbs. per acre plus Serecia Lespedeza (scarified) - 60 lbs.
per acre.
Late Summer - Early Winter
A. Gross:
1) Tall Fescue - 150 lbs. per acre.
2) Tall Fescue - 100 lbs. per acre plus Annual Ryegrain - 25 lbs. per acre.
B. Grass - Legume Mixture
1) Tall Fescue - 100 lbs. per acre plus Serecia Lespedeza (unscarified) - 60 lbs. per acre.
2) Tall Fescue - 100 lbs. per acre plus Crownvetch - 25 lbs. per acre
(((3 Tall Fescue - 75 lbs. per ocre plus Annual Ryegrain - 25 lbs. per acre plus
Serecia Lespedeza (unscarified) - 60 lbs. per acre.
After seeding, the area is to be rolled or cultipacked to insure that the seed is pressed
into contact with soil surface. All seeded areas are to be mulched with straw mulch at
the rate of 3000 lbs. per acre (approx. 100 bales per acre).
Apply asphalt emulsion to the straw mulch at the rate of 150 gallons per acre.
The above seeding recommendations and rates have been prepared for selection of a
vegetative cover suitable for soil erosion control in the Greensboro area.
Area soil types, climotic conditions, seed availability and individual plant
characteristics are all taken into account in the above recommendations. Due to density,
uniformity and textural quality reasons, the above selecions are not recommended for lawn
CONSTRUCTION NOTES
EROSION CONTROL MEASURES ARE TO BE MAINTAINED BY THE OWNER
UNTIL GROUND COVER HAS BEEN WELL ESTABLISHED. DISTURBED AREA
MUST BE STABILIZED WITHIN ANY PHASE OF GRADING.
THE APPROVED COVER AND WATER CONTROL PLAN MAY BE AND WILL
BE REVISED DURING CONSTRUCTION WHEN IN THE OPINION OF THE
CONSERVATION ENGINEERS OR INSPECTORS THAT ADDITIONAL MEASURES
FOR THE PREVENTION OF SIOL LOSS ARE NECESSARY.
CONSTRUCTION SEQUENCE
1. OBTAIN PLAN APPROVAL AND GRADING PERMIT AT A SCHEDULED PRE - CONSTRUCTION CONFERENCE WITH CITY
EROSION CONTROL INSPECTOR, CONTRACTOR RESPONSIBLE FOR EROSION CONTROL, ENGINEER, AND OWNER.
2. INSTALL PROPOSED SILT FENCE, STONE WEIR OUTLETS IN SILT FENCE FROM BEDSTONE DRIVE DOWN TO EX.
STREAM ON BOTH SIDES OF PROPOSED ROADWAY.
3. CLEAR AND GRUBB THIS AREA.
4, INSTALL CONSTRUCTION ENTRANCE.
SITE SELF INSPECTION AS REWIRED BY NCGS 113A -54.1;
SIGNATURE DATE
5. INSTALL TEMPORARY STREAM CROSSING AND PUMP AROUND PER DETAIL SHOWN ON PLAN.
6. INSTALL 72" RCP AND HEADWALLS. INSTALL RIP RAP PAD AT CONCLUSION OF PIPE & HEADWALL INSTALLATION.
7. ROADWAY TO BE FILLED ONCE PIPE IS INSTALLED.
B. CLEAR AND GRUBB AREAS AT SKIMMER BASINS #1 & #2. CLEAR AND GRUBB AREA WHERE SILT FENCE IS TO BE
INSTALLED BEHIND LOTS 25 -33. INSTALL SILT FENCE AND SKIMMER BASINS IN THESE AREAS.
9. CLEAR AND GRUBB SKIMMER BASIN /WET DETENTION POND AREA. CLEAR AND GRUBB LOTS 25-29.
10. INSTALL WET DETENTION POND /SKIMMER BASIN. INSTALL SILT FENCE AT TOE OF SLOPE. EXCESS CUT FROM THIS
AREA SHALL BE PLACED ON LOTS 25 -29 AS INDICATED ON THE GRADING PLAN.
11. CLEAR AND GRUBB REMAINDER OF SITE.
12. ROUGH GRADE STREETS. CONSTRUCT RETAINING WALL WHERE SHOWN. INSTALL ANY REMAINING PERIMETER
EROSION CONTROL DEVICES SUCH AS SILT FENCE. GROUND COVER SHALL BE ESTABLISHED ON ALL EXPOSED
SLOPES AND FILLS WITHIN 7 CALENDAR DAYS FOLLOWING THE COMPLETION OF ANY PHASE OF GRADING.
13. INSTALL STORM DRAINAGE AS SHOWN ON PLANS. INSTALL HARDWARE CLOTH AND GRAVEL INLET PROTECTION ON
ALL PROPOSED STORM SEWER STRUCTURES AS THEY ARE BUILT AS SHOWN ON PLANS.
SITE SELF INSPECTION AS REWIRED BY NCGS 113A -54.1;
SIGNATURE DATE
14. INSTALL WATER AND SANITARY SEWER UTILITIES AS SHOWN ON PLANS.
SITE SELF INSPECTION AS REWIRED BY NCGS 113A -54.1;
SIGNATURE DATE
15. BRING ROADWAY TO FINAL GRADE.
16. ONCE ROADWAY AND LOTS HAVE BEEN BROUGHT TO FINAL GRADE, INSTALL BASE ABC STONE ON ALL STREET
AREAS. MAINTAIN PREVIOUSLY INSTALLED EROSION CONTROL DEVICES. REMOVE SEDIMENT ACCUMULATION FROM IN
FRONT OF SILT FENCE AND INLET PROTECTION AS NEEDED.
17. INSTALL CURB AND GLITTER. BACK FILL CURB.
18. INSTALL FIRST LAYER OF ASPHALT.
19. REMOVE SKIMMER BASIN #1 AND INSTALL BIO -CELL.
20. REMOVE SKIMMER BASIN #2 AND FILL AND GRADE PAD #25.
SITE SELF INSPECTION AS REWIRED BY NCGS 113A -54.1;
SIGNATURE DATE
21. ONCE ENTIRE SITE HAS BEEN STABILIZED, CLEAN OUT SEDIMENT ACCUMULATION IN THE WET DETENTION POND
AND RESTORE POND TO ITS ORIGINAL VOLUME. REMOVE POROUS BAFFLES AND SKIMMER ASSEMBLY FROM POND AS
SHOWN ON PLANS. INSTALL SHEAR GATE VALVE ON EXISTING BOTTOM DRAIN FOR THE POND.
SITE SELF INSPECTION AS REWIRED BY NCGS 113A -54.1;
SIGNATURE DATE
22. INSTALL ALL SIDEWALKS AND SEED ANY DISTURBED AREAS WITHIN 7 CALENDAR DAYS FOLLOWANG THE
COMPLETION OF ANY PHASE OF GRADING. PERMANENT GROUND COVER SHALL BE ESTABLISHED ON ALL DISTURBED
AREAS WITH 14 CALENDAR DAYS FOLLOWING COMPLETION OF CONSTRUCTION.
23. INSTALL FINAL LAYER OF ASHPALT.
24. ONCE SITE CONSTRUCTION IS COMPLETE, PERMANENTLY SEED ALL DISTURBED AREAS. GROUND COVER SHALL BE
ESTABLISHED ON ALL EXPOSED SLOPES AND FILLS WITHIN 7 CALENDAR DAYS FOLLOWING THE COMPLETION OF ANY
PHASE OF GRADING. PERMANENT GROUND COVER SHALL BE ESTABLISHED ON ALL DISTURBED AREAS WITHIN 14
CALENDAR DAYS FOLLOWING THE COMPLETION OF CONSTRUCTION.
SITE SELF INSPECTION AS REWIRED BY NCGS 113A -54.1;
SIGNATURE DATE
25. ONCE THE ENTIRE SITE IS STABILIZED, REMOVE ALL EROSION CONTROL MEASURES.
SITE SELF INSPECTION AS REWIRED BY NCGS 113A -54.1;
SIGNATURE DATE
NOTE:
GROUND COVER SHALL BE ESTABLISED ON ALL EXPOSED
SLOPES AND FILLS WITHIN 7 CALENDAR DAYS FOLLOWING
THE COMPLETION OF ANY PHASE OF GRADING. PERMANENT
GROUND COVER SHALL BE ESTABLISHED ON ALL DISTURBED
AREAS WITHIN 14 CALENDAR DAYS FOLLOWING THE
COMPLETION OF CONSTRUCTION.
CITY OF GREENSBORO
BEFORE BEGINNING ANY UTILITY OR GRADING
WORK WITHIN DEDICATED UTILITY OR STREET
RIGHT - OF - WAYS CONTACT ENGINEERING
DIVISION ® 373 -2302
EROSION CONTROL INSPECTION NOTE:
PROPERTY OWNER, FINANCIALLY RESPONSIBLE
PARTY, OR AGENT TO PERFORM SELF INSPECTION
FOLLOWING ALL PHASES OF EROSION CONTROL AND
CONSTRUCTION. SIGN AND DATE SELF INSPECTION
CHART ON COVERSHEET FOLLOWING SELF
INSPECTION OF EACH PHASE OF EROSION CONTROL
AND CONSTRUCTION.
NOTE:
1. ALL CONSTRUCTION TO BE TO THE CITY OF
GREENSBORO STANDARDS AND SPECIFICATIONS.
2. CONTRACTOR TO VERIFY DEPTH AND LOCATION
OF ALL EXISTING UTILITIES PRIOR TO CONSTRUCTION.
3. CONTRACTOR TO COMPLY WITH THE NEW
O.S.H.A. REGULATIONS CONCERNING TRENCHING
FOR INSTALLATION OF UTILITIES.
4. NO SUBSURFACE INVESTIGATION CONDUCTED
BY EVANS ENGINEERING, INC.
PROJECT TITLE:
GRIFFIN'S KNOLL
GREENSBORO, NORTH CAROLINA
U
-Since 1974-
I Engineers Surveyors Plana 977 �r
4609 Dundas Drive Gseeosboro, NC 27407 -�/ 1e Z• 22•i3 a
Phone [phone] Fax 336-85
4,8876 ®® Vr ee• F�,e se
FIRM LICENSE #C -0168 4i«4 eee *sosrtaee" a , ®®
s
PROJECT: 823-11 DESIGN BY: AOL DRAVM BY: AL �P4 Q • sr�,<r
DWG: H:\DRAVANGS\HERB PARKS \Trooper Rood \Gift Mill Site -4th LAYOUT.d SR'1-kt
SHEET DESCRIPTION:
EROSION DETAIL
SCALE: NTS DATE: JANUARY 22, 2013
REVISIONS: SHEET NO.:/
15
15

PERMANENT STREAM IMPACT SI
72• CULVERT AND RIP RAP BASIN
FOR BEDSTO DRIVE
STREAM CROSSING
r TOTAL IMPACT = 130 LF
kx. P
ERjEN T -'-
DFT�T�ON P WET
o�p
OMMON -
E�EMEN TS ,
0.
/ \ _
\ \
Av
TEMPORARY STREAM IMPACT
SAND BAGS, #57 STONE & HOSE FOR
CULVERT PUMP AROUND
(CHANNEL MUST BE RESTORED TO
EXISTING CONDITION UPON
COMPLETION OF CONSTRUCTION) / PERMANENT WETLAND IMPACT Wl
TOTAL IMPACT = 8 LF CONSTRUCTION OF BEDSTONE
770
2
DRIVE AND CORRESPONDING
STREAM CROSSING
TOTAL IMPACT = 021 AC.
STREAM AND WETLAND IMPACT NOTES:
TEMPORARY STREAM IMPACT FOR CULVERT PUMP AROUND: 8 LF
PERMANENT STREAM IMPACT OF CULVERT AND RIP RAP: 130 LF
WETLAND IMPACT OF CULVERT AND RIP RAP PAD: 0.21 AC
1_—
■ ■ ■ ■ ■ ■ ■- ■ ■�����- ■- ., ■ ■ ■ ■ ■ ■ ■ ■■ 0101■■■■
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RIPRAP WATER
NOT 3
SHOWN . 1—
72" CULVERT 2'' HORIZONTAL 2:1 APRON
FLOOR
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PLAN VIEW
NTS
37.5'
'-. 25' .. 12.5'
T
I I
5' 15' 5' 1 1
I 1
I
72" CULVER i TOP OF RIPRAP
T— � -�.... 1 I
FLOW,
?. - t - - - - --
2.5'_ 1
O ' I I o CLASS II RIPRAP
28"
CLASS 11 RIPRAP
PROFILE VIEW D(50) = 14"
NTS D(max) = 23"
RIPRAP BASIN DETAIL
NTS
NOTE:
1. ALL CONSTRUCTION TO BE TO THE CITY OF
GREENSBORO STANDARDS AND SPECIFICATIONS.
2. CONTRACTOR TO VERIFY DEPTH AND LOCATION
OF ALL EXISTING UTILITIES PRIOR TO CONSTRUCTION.
3. CONTRACTOR TO COMPLY WITH THE NEW
O.S.H.A. REGULATIONS CONCERNING TRENCHING
FOR INSTALLATION OF UTILITIES.
4. NO SUBSURFACE INVESTIGATION CONDUCTED
BY EVANS ENGINEERING, INC.
w
PROPOSED PUMP
PIPE PROPOSED
SILT FENCE
O o (TYP.)
TEMPORARY CONSTRUCTION
STREAM CROSSIN CLASS
FLOW RIP RAP
X X X X \
5'
3 MIN
O)
RIP RAP
#57 STONE
AROUND
PIPE INLET
STREAM
FLOW — — — — —
5
MIN /
X
SAND BAGS X X _X _*j
PROPOSED DISTURBANCE LIMITS
SILT FENCE PLAN
(rn' -)
3' 3'
MIN. MIN. FROM
TO TOP OF PUMP
PUMP BANK
�STftE7GFf_
F L
ow —
EX. K
CREEK TEMPORARY
STONE DAM
REMOVE ENOUGH SANDBAGS TO ALLOW FLOW POLTETHYLENE FABRIC ON FACE (8 ML THICK)
THROUGH WHEN NOT PUMPING AROUND.
SECTION A —A
TEMPORARY "CULVERT CROSSING — PUMP AROUND"
FOR CULVERT INSTALLATION
NOTES
1) EROSION STONE TO BE -CLASS I- RIP -RAP UNLESS DESIGNATED DIFFERENTLY ON
CONSTRUCTION PLAN.
2) PUMP AND LINE SIZE TO BE DETERMINED BY THE CONTRACTOR USING THE BASE FLOW
SHOWN ON THE CONSTRUCTION PLANS
3) MATERIAL SPECIFICATIONS
SANDBAGS: SANDBAGS SHALL CONSIST OF MATERIALS WHICH ARE RESISTANT TO
ULTRAVIOLET RADIATION, TEARING AND PUNCTURE, AND WOVEN TIGHTLY ENOUGH TO
PREVENT LEAKAGE OF FILL MATERIAL (i.e. SAND, FINE GRAVEL, ETC.)
CONSTRUCTION SEQUENCE FOR CULVERT CROSSING -PUMP AROUND
1) INSTALL PUMP AND LINE TO PUMP FLOW FROM AREA UPSTREAM OF TEMPORARY
STREAM CROSSING TO AREA DOWNSTREAM OF CONSTRUCTION AREA. BEGIN PUMPING AND
CONTINUING PUMPING WHILE WORKING WITHIN THE STREAM.
2) INSTALL DOWNSTREAM TEMPORARY STONE DAM AND FILTER FABRIC TO PREVENT
BACKFLOW INTO CONSTRUCTION AREA.
3) INSTALL PROPOSED SILT FENCE ALONG TOP OF BANK EACH SIDE OF THE
CONSTRUCTION AREA.
4) UPON CONSTRUCTION COMPLETION, REMOVE TEMPORARY DAMS, FILTER FABRIC.
DEPRESS TEMPORARY DAM BOTTOMS INTO STREAM BED UNTIL TOP OF RIP RAP IS LEVEL
WITH STREAM BOTTOM.
5) UPON STABILIZATION OF CLEARED AREAS, REMOVE TEMPORARY EARTH BERM, SEDIMENT
TRAP, AND DEWATERING BASIN.
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KNOLL
BEDSTONE DR.
72" CULVERT
287' SOUTH OF
MILLSHIRE CT.

TM PW.;M tinrrlx� lV
BE INSTALLED IN POND WET DETENTION POND TO ACT AS A SEDIMENT BASIN
HERE UPSTREAM OF
Exlsnrvc RIP -RAP BAFFLE DURING CONSTRUCTION POND IS TO BE CONSTRUCTED - _
ONCE SITE HAS BEEN - -
STABILIZED. CLEAN OUT / / - / - - - . THE 36 RISER TWO D _ \ P
AS SOON AS THE SITE HAS BEEN CLEARED AND A 6" V "
SEDIMENT ACCUMULATION RIP 6P PAD / / / ��0 _ : ,� .:� _ - -_- -T0 BOTTOM DRAIN ON - - _._ , �J
IMMER ASSEMBLY ORIFICE IS TO BE FITTED
�✓ G
FROM SKIMMER BASIN #1 AND ' R \vow P �yyt =g' / / ° / _ /� . •- -X""'X _ SILT '� - : _ _ _POUROUS "BAFFLES ARE TO BE ADDED "TO THE POND -
REMOVE POROUS BAFFLES EX' W2-28' ° / / - :: L �g� N - -- _ . _ _ - _:::UPSTREAM OF THE RIP -RAP BAFFLE. POND TO BE
AND SKIMMER ASSEMBLY. La -26' i s1 :: :: 11a- - ® : - -- INSPECTED PERIODICALLY DURING CONSTRUCTION TO MAKE
- \�'
O
SHOWN --- -':: _ '� _
INSTALL BIO CELL AS SHO � ., � �._ ®- - -� _SURE THE POUROUS BAFFLES AND SKIMMER ASSEMBLY
s N �
ON PLANS. ` THICKNESS =26 ° / -/ 778 77a A NCI NING PROPERLY. ONCE CONSTRUCTION HAS -
CLASS I RIP RAP / 'C RE FU TO 4- �V
�•: -- `" � BEEN COMPLETED, ALL ACCUMULATED SEDIMENT IS TO BE O�J ,- �� -" � ONS '
' :. 774 n5 f, 90- - REMOVED FROM THE EXISTING WET DETENTION POND AND j p0 _ � 9-
/ - - - IT IS TO BE RESTORED TO ITS ORIGINAL DESIGN VOLUME. i 8 P, _� s 5� pER�N -
/ r4 POUROUS BAFFLES ARE TO BE REMOVED. THE SKIMMER �g06 -
\ 773 \ ° -
i \ ,... ASSEMBLY IS TO BE REMOVED AND THE 8" SHEAR GATE -
RIP RAP \ \ / / / / / i `VALVE IS TO BE ATTACHED TO THE BOTTOM DRAIN AND
PLUNGE POOL 2• CLOSED. THE WET DETENTION POND IS TO THEN BE
/ W1=18'' 76 §. I - J2E- CER1IFIED BY A P�QF EE
ESSIONAL ENGINEER. .
THICKNESS =28" (\ o ` / I I �`� / / I / I T
/ CLAS\S it RIP RAP \ - - - -` -j I 1 I / - - - - - -
\ 770 °�G =
77 `i/ -X °X- -x - X -X -xT =2i - -x-
773. 1 A 20
_774 - 15E RCP
\ \\ `` \ �•S - - L_ - {- 774•
\ '\ / �' r1 �/ / 773. e - 1 / �4v / i• ' / / / // / / / l // i / / / _ .
776.5-
Nk
I I�
7----
,
\ \ IMMER B #1 BIL
6 / I PROTECTION
WITH 3 POROUS BAFFLES GRAVEL INLET
NOS TOP EL. = 774.00 15" R (TYPICAL) /
BOTTO =770.0 1g
TEE FM CON TRUCITON
ENTRANCE I \/ PC' \ 1 \ \
/ 6 / \ \ 1 \
zs• wIDE x too• LONG x �. .1, � � w � 06 � r0� \ 1 1 \ �y \ 2 S� \ \ / �2 �6 E
8' THICK 1 �. /1- ' o \/ \ Y \ /\ \� \ , \ of \
i I .g. 1 r /k
C= 0.65 T EM PORAY BERM CHART NOTE: EXCELSIOR LINER TO BE NORTH AMERICAN GREEN OR EQUIVALENT- 1/22/2013
I= 5.75 IN/HR NOTE: (MASS CAN WITHSTAND VE- OCRIES OF FPS.
NOTE: MAX VELOCITY W TTHOUT A LINER PER N.C. EROSION MANNUAL IS 2 FPS.
SWLE
NO.
DRAINAGE
AREA
SLOPE ( %)
SIDE SLOPES
FLOW (C.F.S.)
EL ITY
(FT /sec)
F W DEP
(FT.)
SHAPE
LINER
TAPLE
PATTERN
AL ULED
SHEAR STRESS
PERMITTED
SHEAR STRESS
CLASS B
23
72"
414.43
40'
18'
46
36"
CLASS 11
TRAPEZOIDAL
1
2.78
4.72%
2:1
10.39
4.28
0.71
7 BOTTOM
SC15OBN
D
2.09
2.10
TRAPEZOIDAL
2
0.23
10.13%
2:1
0.86
3.41
0.11
Z BOTTOM
DS75
D
0.72
1.55
TRAPEZOIDAL
3
0.10
2.68%
2:1
0.37
1.65
0.10
Z BOTTOM
DS75
D
0.17
1.55
CLASS 1
Pipe - FES RIPRAP WZ
W
DETAIL - OUTLET PROTECTION
vv v v v v v v v
WET DETENTION POND TO ACT AS SKIMMER BASIN
DURING CONSTRUCTION. SEE SKIMMER BASINf
CALCULATIONS FOR WET DETENTION POND BELOW.
DRAINAGE AREA = 8.95 ACRES
j DISTURBED AREA = 6.63 ACRES
r REQUIRED VOLUME = 1800 CF /DISTRUBED AREA
REQUIRED VOLUME = 11,934 CF
VOLUME PROVIDED (768 -771)= 14,475 CF
SURFACE AREA REQUIRED = 325 SF /10 -YR INFLOW
SURFACE AREA REQUIRED = 325 SF X 45.10
SURFACE AREA REQUIRED = 14,658 SF
SURFACE AREA PROVIDED = ±15,743 @ AT EL. 776.50
(EMERGENCY SPILLWAY) /
SKIMMER SIZED FOR ±2.5 DAY DEWATERING TIME
(SEE SIZING CHART BELOW)
t ONCE LOTS 25 -29 HAVI BEEN
CLEARED, STOCKPILE EXCESS CUT IN \\ `
LOT #25 AROUND SKIMMER BASIN #2.
k ONCE SITE HAS BEEN STABILIZED, /
REMOVE SKIMMER BASIN #2 AND \ / /� / / \ \ \ X TO HE
2 REMOVE POROUS BAFFLES AND \ /\ \ \ \ \ �' / \ \ r0 �\ e" E WITH R
KIMMER ASSEMBLY. BRING PAD #25 \ // / I / // \ \ \� \ \ \ \ 9� / \
J \ MADE WITH A 2.0" Arm Assembly B" SKIMMER
F\ \ �O \ / sb'. �\ � \ � \ \ \ \ DEWATERING ORFICE ASSEMBLY
0 GRADE WITH PREVIOUSLY / / / \ \ \ \ �( / / \ ` s \�
' I \ \ \ �- / \ \ \ \ \ � \ PER FIGURE 8.64H
TOCKPILED DIRT. // J \ a \ \ \ \ \ \ \ \,o \\ \ O 4 S \ OF THE NORTH
\\ VC- \ / \ CAROLINA CEre:�eure A D �Nr
\ \ \ \ \ \\ \ \ 2 s \ \ \ \ CONTROL PLANNING
\ 1 \ \ t\ \ \ \ r \ \ AND DESIGN MANUAL Water Entry
PERSPECTIVE VIEW Unit
\ \ �� e \ ✓ // �\ \ `\ �. \ \ d� \ /'\ / \ d \ \ \ �\ \ T ` \ \ Pvc End schedule 40
% Pvc vent
PVC Elbaw Pi PVC Pipe
-- - 7 r PVCErtd Water surface
Q69 3 ✓ \ Schedule 40
PVC Tee PVC Pipe PVC Pipe '
\ Hales in � PVC `ax Orifice
ESMT. \- \ \ \ \ \ \ ` \� �\ \ \ a \ \ \ ` \ i \ t� \ / \ \ \ Underside Ple nble Plate
Hase
- - -- -- ------ - -lam\ \� \ \� \\ \\ \ \ ( OIL g D \ \ 24 1`
- a
\ \ \ V't. j \ \\ / \ ` \ 5 O \ \ \ \ \ \ /\ END VIEW ENO VIEW FRC
Figure 6.64a Schematic of a skimmer, from Figure 6.64a Schematic of a skimmer, `ijm Pennsylvania Erosic
\ \ \\ � \ \ \ ! \ March. 2000. March, 2000.
2/1!2013
C__ 0.65 PERMANENT SWALE CHART NOTE: ExOsLsxm ut4m TO BE ORAERCN GRE3OR CdVmlw-
\
1= 5.75 IN/HR NOTE: GRASS CAN WTTHSTANDYEI OCTTIES OF FPS.
NOTE. C=.35 FOR UNIMPROVED CLEARED AREA NOTE: MAX VELOCITY W I HOUT A LINER PER N.C. EROSION MA ANNUAL IS 2 FPS• !� \ \ �i SI✓ E \
\ \ \ \\ \ OJS \ \ \ \ X`'� , 1S "R \ / Figure 6meter safu
J
SWALE DRAINAGE
NO. AREA SLOPE (%) SIDE SLOPES FLOW (C.F.S.) (FTJsec) (FT) SHAPE LINER PATTERN SHEAR STRESS SHEAR STRESS \ \ \ \ \ \ \ \ \ \ - orifice diameter as a function
\ \ \ \ `__ 0 basin dasin volume
g timed
\
\, J
\ \\ \ \ \ \ o � \ \ /
TRAPEZOIDAL \ \A \ \ \ \ ( \ �\_DISTU� BED
1 0.11 7.69% 2:1 0.41 239 0.08 7 BOTTOM DS75 D 0.38 1.55 , \ \ \ ` \\ \ \ \ \ `/�� \ \ ` \\ \ \ \ ' V �2�' \ X LIMITS (TYPICAL
TRAPEZOIDAL �\ \ \ \ \ \ \\ \ \ \ \\ \. \ \ ( ° \ \ \ \ \ \ \ - - -- --
2 0.11 3.57% 2:1 0.41 1.87 0.10 7 BOTTOM DS75 D 0.22 1.55 \ \ \ \� \ \ \ \ \ ® \ \ \ \ \ \ \ \ I \ �\ \ \ \ \ \ /
o.zs
TRAPEZOIDAL \ \` \ \ \ \` \ \ \ \ \ \ / \ \ \ \ \ \ \ \ \ ` WATERING TIME
N
USE 2' ORIRCE
3 0.11 2.13% 2:1 0.41 1.59 0.12 Z BOTTOM DS75 D 0.15 1.55 \
FOR t ,5
TRAPEZOIDAL 4 0.13 4.26% 2:1 0.49 2.11 0.11 7 BOTTOM DS75 D 0.28 1.55
\ \\
TRAPEZODAL \ �\ \ \ \`� o^ ' \ I ® \
5 0.16 3.77% 2:1 0.60 2.18 0.12 7 BOTTOM DS75 D 0.29 1.55 /` s
\\ \ '� ._ � \ � \ \ \ \ .\ \ \ � ;� -�-. ® _ OWNER /DEVELOPER: 3
TRAPEZOIDAL
C ` I ,� i i ` 7CrisKats, LLC
6 0.18 2.04% 2:1 0.67 1.85 0.16 7 BOTTOM DS75 D 0.20 1.55 \ '
_ 7B CORPORATE CENTER COURT
TRAPEZODAI \ \ \ \\ `-- J t\ ` \ \` \ \` . \• GREENSBORO, NC 27408 r
7 0.18 1.89% 2:1 0.67 1.81 0.16 Z BOTTOM DS75 D 0.19 1.55 \ \ \ <� '
TMPEZOIDAL \� e \ \ \ \ ® \ _ \ \ \
8 0.15 200% 2:1 0.56 1.73 0.14 ZBOTTOM DS75 D 0.18 1.55 TELEPHONE: [phone]
� �� FAX:[phone]
9 0.27 10.07% 2:1 1.01 3.60 0.12 Z BOTTOM DS75 D 0.78 1.55
CONTACT: HERB PARKS
TRAPEZOIDAL
10 0.30 8.90% 2:1 1.12 3.59 0.14 7BOTTOM DS76 D o.7s 1.55 EMAIL ADDRESS: hparks®besisuites.com
I
P181
OUTLET PROTECTION
ccclf cl7c rl nwf,fsl I . iffl W. W. Thickness (ft) RIP -RAP
5
15"
0.71
10'
3.75'
12'
13"
CLASS B
22
30"
31.21
14'
7.5'
16.5'
1 16"
CLASS B
23
72"
414.43
40'
18'
46
36"
CLASS 11
GEOTEXTILE LINER TO BE
INSTALLED UNDERNEATH
RIPRAP PAD
ON -SITE SOIL TYPES: CkB, PoC, PoE, Ppc2, PpE2
HYDROLOGY GROUPS: A, B
TOTAL DISTURBED AREA
_ ±5.84 ACRES
EROSION CONTROL
LEGEND
- X X X -
TEMPORARY SEDIMENT FENCE
CONSTRUCTION ENTRANCE
_D� DRBM 1 DB --.
TEMPORARY DIVERSION BERM
x -x- x -x -x
STONE WEIR OUTLET IN SILT FENCE
DISTURBED LIMITS
E3
TEMPORARY INLET PROTECTION
®®®® ®® PRE DEVELOPMENT DRAINAGE DELINEATION LINE
+ SWALEn
PERMANENT DRAINAGE SWALE
C k B
SOIL LINE (TYPICAL)
GRAPHIC SCALE
n 40
( IN FEET )
1 inch = 40 ft.
PROJECT TITLE:
GRIFFIN'S KNOLL
GREENSBORO, NORTH CAROLINA
161
+ -.vans
+ ngineenng, In °ee �5. •.
-Since 1974 - e
1 Engineers Surveyors Planne e, r 977
a
4609 Dundas Drive Greensboro, NC 27407
Phone [phone] Fax [phone]] reoe ��,���� y
FIRM LICENSE #C -0168 v��� ®e ® ®e„ as, p1°°i'r�� ®®®
4
PROJECT: 823 -11 DESIGN BY: ADL DRAWN BY. AL
DWG: H: \DRAWINGS \HERB PARKS \Trosper Road \Griffin Mill Site -41 h LAYOUTd [fd�S'i'•�34
SHEET DESCRIPTION:
EROSION CONTROL, PLAN
SCALE: 1 "= 40' DATE: JANUARY 22, 2013
REVISIONS: 02 -27 -13 SHEET NO.:
REVISIONS: 03 -05 -13 14
REVISIONS: 03 -19 -13
15

STEEL POST DRIVEN
INTO GROUND ( ±24" _
NCDOT #5 or #57
washed stone -
NC60T #5 or #57
washed stone -
HARDWARE CLOTH AND GRAVEL
INLET PROTECTION
NOT TO SCALE
TEMPORARY SEEDING
DEFINITION
Seeding disturbed areas with annual grasses or legumes to provide temporary ground
cover to lessen soil erosion.
PURPOSE
To temporarily stabilize graded cut and fill slopes that cannot be seeded with permanent
vegetation within thirty days after completion.
To temporarily stabilize graded areas of bare soil where permanent vegetative cover is
not needed or where grading has not been completed and permanent seeding will be
done later.
CONDITIONS WHERE PRACTICE APPLIES
Where bare soil has been exposed by grading, and vegetative cover is needed for one
year or less. May include such areas as temporary sediment pond, diversions, soil
stockpiles, building pads, rough - graded road banks, etc. It is also used to provide a
temporary perimeter buffer.
PREPARATION
Prepare seedbed by ripping, chiseling, harrowing, or plowing to depth of at least six
inches so as to produce a loose, friable surface. Incorporate 750 -1,000 pounds 10-10-
10 fertilizer and up to two tons of dolomitic lime per acre (Note: Lime may not be needed
if a soil test indicates a pH of 6.5 or higher). Mulching is required according to the same
specifications as for permanent seeding unless waived by Soil Scientist. Select seeding
mixture and best planting dates from Table 12.
TABLE 12
TEMPORARY SEEDINGS
SEEDING MIXTURE SEEDING RATE (LB /ACRE) PLANTING DATE!
Rye Grain and 120 lbs. Jan. 1 - May 1
Kobe Lespedeza 50 lbs.
German Millet or 40-50 lbs. May 1 -Aug. 15
Sudan Grass
Rye (Grain) 120 lbs. Aug. 15 - Dec. 30
(may substitute cats
before Oct. 1 or wheat
from Oct. 1 -Nov. 15)
Annual ryegrass 40 lbs. Aug. 15 - Nov. 30
Weeping Lovegrass 1/ 5lbs. May 1 -Aug. 15
1/ Weeping Lovegrass is a perennial grass but is included here because of its
adaptability to poor soil conditions and droughty sites.
19 -guage hardware cloth
/ (; mesh openings)
T__
2'
COMPACTED
SOIL
2• -0-
MIN.
6' -0'
(TYP.)
CONSTRUCTION SPECIFICATIONS
0
1. REMOVE AND PROPERLY DISPOSE OF ALL TREES, BRUSH, STUMPS,
• • •
AND OTHER OB✓ECTIONAL MATERIAL.
BOTTOM
DIMEN.
2. ENSURE THAT THE MINIMUM CONSTRUCTED CROSS SECTION
ORIFICE
DIA..
MEETS ALL DESIGN REQUIREMENTS.
1
3. ENSURE THAT THE TOP OF THE BERM IS NOT LOWER AT ANY POINT
2.47 AC
THAN THE DESIGN ELEVATION PLUS THE SPECIFIED SETTLEMENT.
1615 SF
4. PROVIDE SUFFICIENT ROOM AROUND DIVERSIONS TO PERMIT
1 0 0
MACHINE REGRADING AND CLEANOUT.
5' WIDE
5. VEGETATE THE BERM IMMEDIA TEL Y AFTER CONSTRUCTION,
1.91 AC
UNLESS IT WILL REMAIN IN PLACE LESS THAN 30 WORKING DAYS.
3438 CF
MAINTENANCE
-34, W -270
INSPECT TEMPORARY DIVERSIONS ONCE A WEEK AND AFTER EVERY
1.5"
RAINFALL. IMMEDIATELY REMOVE SEDIMENT FROM THE FLOW AREA
O 0 0
AND REPAIR THE DIVERSION BERM. CAREFULLY CHECK OUTLETS
REV.
AND MAKE TIMELY REPAIRS AS NEEDED. WHEN THE AREA PROTECT-
ED IS PERMANENTLY STABILIZED, REMOVE THE BERM AND THE
CHANNEL TO BLEND WITH THE NATURAL GROUND LEVEL AND APPRO-
"Location of Seam Stitch w�
PRIATEL Y STABILIZE IT.
(1Am)
IT V OF ORE ENS 0 OR
O 0 0
Arrb�ncah
STD. NO. I
REV.
Fl-1; lid /,;f -E /% -7-'I / /i/ %14a� I
DOT SYSTEM" W80M 2010"m
STAPLE PATTERN GUIDE
PARA EL ENGRAPADO
O
"2'-5' (5on -1�)- r (gem) -r--V (3cm- 12.5an)
� seam Sube
"2'-5' (- t2.Scm) ® *2"-8- (sem- t2.San)
4' (1.2m)
0
$ (1.2m)
• • •
Sean Stadh°
BOTTOM
DIMEN.
Lt
ORIFICE
DIA..
SPILLWAY
1
1.23 AC
2.47 AC
2214 CF
1615 SF
-=40, WP20'
1 0 0
1"
5' WIDE
2
1.91 AC
3.86 AC
3438 CF
3.Y (1.Qn)
-34, W -270
t°-�F20- ie.Sms
1.5"
5' WIDE
O 0 0
STD. AV
REV.
® ®
•�IOe
%Location of Seam Stitch will
"Location of Seam Stitch w�
(1Am)
a,>r•�s
O 0 0
Arrb�ncah
oil ct�type;
Glean product type:
A n p
:f3-V
3.4 STAPLES PER SQ. YD.
(4.1 SrAPLES PER SQ. M)
3.75 STAPLES PER SO. YD.
(4S SrAPLiS PER SQ. M)
For SVOZtha Nottl American /Gnsen
For Ob rata with the North American Grow
place
through each of the *#TE colored dots
through each of the YELLAW colored dote
Ara mates can at sivisma DOT de
North Ammioon Groan. clove los
a troves de los de grapoe atst.cas
Ara mantes con el sistano DoT de
American Or-
�coloraa
puntos
hav bs ae /
POROUS BAFFLE IN ROCK DAM /SEDIMENT PIT
DETAIL
SCALE: NOT TO SCALE
Table 6.10a
Temporary Seeding
Recommendations for Late
winter and Early Spring
Seeding mixture
Species Rate (Ib/acre)
Rye (gam) 120
Annuallespedeza(Kobein
Piedmont and Coastal Plain,
Korean in Mountains) so
Omil annual lespedeza when duration of temporary cover is not to
extend beyond Juno.
Seeding dates
Maintains- -Above 2500 feel: Feb. 15 - May 15
Below 25DO feet Feb. 1- May 1
Piodmont- i . 1- May 1
Coastal Ptamn -Dec. 1 -Apr. 15
Soil amendments
Follow recommendations of sal tests or apply 2,000 lb/acre ground
agrloullurd limestone and 750 lb/acre 10 -10-10 *Wiz c
Mulch
Apply 4.000Ib/acre straw. Anchor straw by tacking with asphalt, netbrg,
or a mulch anchoring W. A disk with blades set nearly straight can be
used as a mulch anchoring tool.
Maintenance
Retertilize If growth is not fully adequate. Reseed, felertilize and mulch
immediately following erosion or other damage.
Table 6.10b
Temporary Seeding
Recommendations for
Summer
W WIDE EkSANKMENT
V FREEBOARD 1120 FLOW DEPTH
0 0.25 day a O.S day day
5 days 10 days
VOLUME REQ'D= (1800 CF) (DIST. AREA)
SURFACE AREA REQ'D= (325) (Q10)
Seeding mixture
species Rate (Ib/acre)
German millet 40
In the Piedmont and Mountains, a small- stemmed Sudangrass may be
substituted at a rate of 50 Ib lacre.
Seeding dates
Mountains --May 15 -Aug. 15
Piedmont -May 1 -Aug. 15
Coastal PlairE -Apr. 15 -Aug. 15
Soil amendments
Follow recommendations of soil tests or apply 2,000 Ibtacxe ground
agricultural limestone and 750 Ib/acre 10 -10-10 fertilizer.
Mulch
Apply 4,000lb(acrestraw Anchor straw bytadting with asphatt ,netting,
or a mulch anchodng tool. A disk with blades set nearly straight can be
used as a mulch anchoring tool.
Maintenance
Refertilize if growths not fully adequate. Reseed, refimblize and mulct
immediately kWo&*V erosion or other damage.
TYPICAL SKIMMER SEDIMENT BASIN
NTS
Table 6.10c
Temporary Seeding
Recommendations for Fall
Seeding mixture
species Rate (Lbtatxe)
Rye (grain) 120
Seeding dates
Mountains -Aug. 15 - Dec. 15
Coastal Plain and Piedmont -Aug. 15 - Dec. 30
Soil amendments
Follow soil tests or apply 2,000 Ib/acre ground agricultural limestone
and 1,000 Ib/acxe 10 -10-10 fertilizer.
Mulch
Apply 4,000 Ib/acae straw. Anchor straw by taddng with Asphalt, netting,
or a mulch anchoring tool. A disk with blades set nearby straight can be
used as a mulch anchoring tool.
Maintenance
Repair and refertilize damaged areas immediately. Topdress with 50
Ib/acxe of nitrogen in March. If it is necessary to extent temporary
cover beyond June 15, overseed with 50 lb/acre Kobe (Piedmont and
Coastal Plain) or Korean (Mountains) Lespedeza in late February or
early March.
4
4
O
ti
O
N
17
NOTEB'
DISTURBED
AREA
DRAINAGE
AREA
VOLUME
REQ'D.
SURFACE
AREA REQ'D.
BOTTOM
DIMEN.
VOLUME PROV'D./
SURFACE AREA PROM
ORIFICE
DIA..
SPILLWAY
1
1.23 AC
2.47 AC
2214 CF
1615 SF
-=40, WP20'
3624 CF/ 1664 SF
1"
5' WIDE
2
1.91 AC
3.86 AC
3438 CF
2525 SF
-34, W -270
5976 CF/ 2574 SF
1.5"
5' WIDE
VOLUME REQ'D= (1800 CF) (DIST. AREA)
SURFACE AREA REQ'D= (325) (Q10)
Seeding mixture
species Rate (Ib/acre)
German millet 40
In the Piedmont and Mountains, a small- stemmed Sudangrass may be
substituted at a rate of 50 Ib lacre.
Seeding dates
Mountains --May 15 -Aug. 15
Piedmont -May 1 -Aug. 15
Coastal PlairE -Apr. 15 -Aug. 15
Soil amendments
Follow recommendations of soil tests or apply 2,000 Ibtacxe ground
agricultural limestone and 750 Ib/acre 10 -10-10 fertilizer.
Mulch
Apply 4,000lb(acrestraw Anchor straw bytadting with asphatt ,netting,
or a mulch anchodng tool. A disk with blades set nearly straight can be
used as a mulch anchoring tool.
Maintenance
Refertilize if growths not fully adequate. Reseed, refimblize and mulct
immediately kWo&*V erosion or other damage.
TYPICAL SKIMMER SEDIMENT BASIN
NTS
Table 6.10c
Temporary Seeding
Recommendations for Fall
Seeding mixture
species Rate (Lbtatxe)
Rye (grain) 120
Seeding dates
Mountains -Aug. 15 - Dec. 15
Coastal Plain and Piedmont -Aug. 15 - Dec. 30
Soil amendments
Follow soil tests or apply 2,000 Ib/acre ground agricultural limestone
and 1,000 Ib/acxe 10 -10-10 fertilizer.
Mulch
Apply 4,000 Ib/acae straw. Anchor straw by taddng with Asphalt, netting,
or a mulch anchoring tool. A disk with blades set nearby straight can be
used as a mulch anchoring tool.
Maintenance
Repair and refertilize damaged areas immediately. Topdress with 50
Ib/acxe of nitrogen in March. If it is necessary to extent temporary
cover beyond June 15, overseed with 50 lb/acre Kobe (Piedmont and
Coastal Plain) or Korean (Mountains) Lespedeza in late February or
early March.
4
4
O
ti
O
N
17
NOTEB'
- SPACING OF POSTS USING HOG X RE WIT" APPROVED ERASION
CONTROL FAHRTCS TO BF B 0' fill CFNTFA.
POST METAL T POST 5 0' OR 6 0- It., DE.PENDIAt; ON FILL
. OPF (NTH. 1.. -r3 18/1 F STFFI CIJIJ.STAI .`TTOPr) .
FABRIC- 3' -0- IN jVlDrAr !MUSE BE STANSAfO SPECIFICATIONS
FOR SILT FENCE - ASfN O T WITH 12- BURIED IN THE /dL'H.
Siva: (!I' ItiLL0 14 MASHLO SI&ft PLACLO 1' -0' &LLP AI 51L /LiV .
-SPI Tr'F.S TN FAPPr D BF OV.-F9 APPFO A ITN. OF d FT.
-MAXIM N ORA1PtAGE AREA = 114 ACirE .PER 100 FT OF FENCE FOR 2% &7 LESS SL 5PF.
-SILT fLNL'E TO BE RLA47VLD AfILIJ C&AYIRUCIIDN 15 COMPLEIL AS DIRECTED BY
It& c'ON,ilHucIION INSPLCIOR.
PA6E 1 4W2
C/ T V O F 0 R EE N 5 B 0
R 0
STD. AV
REV.
SILT FENCE DETAIL
•�IOe
430
ar��
a,>r•�s
EOM STRUCTURAL STONE SHALL BE
(CLASS 'B') STOW FOR EROSION
CONTROL PISS 15-SR-T FENCE
ED CONTROL STONE SHALL
BE 05 OR f57 ST OE �I
-�
POST
° I D° 0° ° ° ° ° °
0000000000°311" X SIT FENCE 0 0 000
00 0 00 o o SILT
FENCE
o °o °o °o o o °o °0 °
SEET sTRUCTUM �
CONSTRUCTION NOTES
1 - EROSION CONTROL MEASURES ARE TO BE MAINTAINED BY THE OWNER
UNTIL GROUND COVER HAS BEEN WELL ESTABLISHED. DISTURBED AREA
MUST BE STABILIZED WITHIN ANY PHASE OF GRADING.
2. THE APPROVED COVER AND WATER CONTROL PLAN MAY BE AND WILL
BE REVISED DURING CONSTRUCTION WHEN IN THE OPINION OF THE
CONSERVATION ENGINEERS OR INSPECTORS THAT ADDITIONAL MEASURES
FOR THE PREVENTION OF SIOL LOSS ARE NECESSARY.
GENERAL PLAN NOTES
1. SOIL EROSION CONTROL DEVICES MUST BE INSTALLED INITIALLY AFTER THE
GRADING PERMIT IS ISSUED AND ROUGH GRADING STARTS. PLANNING AND
DEVELOPMENT STAFF WILL CHECK THESE DEVICES FOR PROPER INSTALLATION
AND COMPLIANCE WITH THIS PLAN. A "CERTIFICATE OF PERFORMANCE" WILL
BE ISSUED. THIS CERTIFICATE MUST BE BROUGHT TO OUR INSPECTIONS
DIVISION BEFORE A BUILDING PERMIT WILL BE ISSUED.
2. ALL EROSION CONTROL DEVICES ARE TO BE INSTALLED IN ACCORDANCE WITH
THE APPROVED PLANS AND SPECIFICATIONS. ANY CHANGES ARE TO BE APPROVED
BEFORE CONSTRUCTION BY CITY OF GREENSBORO PLANNING AND DEVELOPMENT,
OFFICE OF SOIL SCIENTIST. ADDITIONAL DEVICES WILL BE REQUIRED IF NECESSARY.
3. IF FILL MATERIALS ARE BEING BROUGHT ONTO THIS PROPERTY OR IF WASTE
MATERIALS ARE TAKEN FROM THIS PROJECT, THIS INFORMATION MUST BE DISCLOSED
AND SHOWN ON THE EROSION CONTROL AND GRADING PLAN. BORROW AREAS AND
DUMP SITES ARE CONSIDERED TO BE PART OF THIS PROJECT.
4. UNDER THE CITY OF GREENSBORO SOIL EROSION AND SEDIMENTATION CONTROL
ORDINANCE (SECTION 19); AGENTS, OFFICIALS, OR OTHER QUALIFIED PERSONS ARE
AUTHORIZED TO PERIODICALLY INSPECT THE SITES OF LAND - DISTURBING
ACTIVITIES. OBSTRUCTING, HAMPERING OR INTERFERING WITH SUCH INSPECTIONS
CARRIES A $500 PER DAY CIVIL PENALTY. THE INSTIGATION OF THIS CIVIL
PENALTY REQUIRES NO PRIOR NOTICE.
5.IN AN EFFORT TO MINIMIZE EROSION AND EXPOSURE TIME, EASEMENT AREAS
SHALL NOT BE GRUBBED OR GRADED UNTIL UTILITIES ARE READY TO BE INSTALLED.
ALSO, THE IMMEDIATE SEEDING OF DISTURBED EASEMENT AREAS AFTER UTILITIES
ARE INSTALLED WILL ELIMINATE MANY PROBLEMS. EASEMENT AREAS WHICH CROSS
OR ARE ADJACENT TO WATERCOURCES SHOULD RECEIVE SPECIAL CONSIDERATION.
6. NO LAND - DISTURBING ACTIVITY SHALL BE PERMITTED IN PROXIMITY TO A LAKE OR
NATURAL WATERCOURSE UNLESS A BUFFER ZONE IS PROVEDED ALONG THE MARGIN OF
THE WATER BODY OF SUFFICIENT WIDTH TO CONFINE VISIBLE SILTATION WITHIN
THE TWENTY -FIVE PERCENT OF THE BUFFER ZONE NEAREST THE LAND - DISTURBING
ACTIVITY.
7.IF AN EXISTING POND IS DESIGNATED AS A PERMANENT WATER QUALITY POND, ALL
SEDIMENT DEPOSITED IN IT DUE TO CONSTRUCTION MUST BE REMOVED WHEN THE
SITE HAS BEEN STABILIZED. THE POND MUST BE CLEANED OUT BEFORE THE
GRADING PERMIT IS FINALIZED.
SEEDING SPECIFICATIONS
CITY OF GREENSBORO - SOIL EROSION CONTROL SECTION
Apply 4000 lbs. agricultural limestone per acre.
Apply 1000. lbs. 10 -10 -10 fertilizer per acre for gross seeding.
Lime and fertilizer are to be disked into the soil surface to a minimum depth of 4 inches.
Late Winter - Early Spring
A: Grass:
(1) Tall Fescue - 150 lbs. per acre.
B. Grass - Legume Mixture
(1) Tall Fescue - 100 lbs. per acre plus Serecia Lespedezo (scarified) - 60 lbs. per
acre.
(2) Tall Fesue - 100 lbs. per acre plus Crownvetch - 25 lbs. per acre.
Early Spring - Late Spring
A. Grass:
�1) TAII Fescue - 150 lbs. per acre
2) Tall Fescue - 100 lbs. per acre plus Weeping Lovegrass - 5 lbs. per acre.
B. Grass - Legume Mixture
(1) Tall Fescue - 100 lbs. per acre plus Serecia Lespedeza (scarified) - 60 lbs. per
acre.
Summer
A. Grass:
(1) Tall Fescue - 150 lbs. per acre plus Weeping Lovegrass - 5 lbs. per acre.
2) Weeping Lovegrass - 5 lbs. per acre plus Browntop Millett or Sorghum -Sudan
Hybrids - 50 lbs. per acre.
B. Gross - Legume Mixture
(1) Weeping Lovegrass - 5 lbs. per acre plus Serecia Lespedeza (scarified) - 60 lbs.
per acre.
Late Summer - Early Winter
A. Grass:
1) Tall Fescue - 150 lbs. per acre.
2) Tall Fescue - 100 lbs. per acre plus Annual Ryegrain - 25 lbs. per acre.
B. Gross- Legume Mixture
(1) Tall Fescue - 100 lbs. per acre plus Serecia Lespedeza (unscarified) - 60 lbs. per acre.
2) Toll Fescue - 100 lbs. per acre plus Crownvetch - 25 lbs. per acre
3) Tall Fescue - 75 lbs. per acre plus Annual Ryegrain - 25 lbs. per acre plus
Serecia Lespedeza (unscarified) - 60 lbs. per acre.
After seeding, the area is to be rolled or cultipacked to insure that the seed is pressed
into contact with soil surface. All seeded areas are to be mulched with straw mulch at
the rate of 3000 lbs. per acre (approx. 100 bales per acre).
Apply asphalt emulsion to the straw mulch at the rate of 150 gallons per acre.
The above seeding recommendations and rates have been prepared for selection of a
vegetative cover suitable for soil erosion control in the Greensboro area.
Area soil types, climatic conditions, seed availability and individual plant
characteristics are all taken into account in the above recommendations. Due to density,
uniformity and textural quality reasons, the above selecions are not recommended for lawn
CONSTRUCTION NOTES
EROSION CONTROL MEASURES ARE TO BE MAINTAINED BY THE OWNER
UNTIL GROUND COVER HAS BEEN WELL ESTABLISHED. DISTURBED AREA
MUST BE STABILIZED WITHIN ANY PHASE OF GRADING.
THE APPROVED COVER AND WATER CONTROL PLAN MAY BE AND WILL
BE REVISED DURING CONSTRUCTION WHEN IN THE OPINION OF THE
CONSERVATION ENGINEERS OR INSPECTORS THAT ADDITIONAL MEASURES
FOR THE PREVENTION OF SIOL LOSS ARE NECESSARY.
CONSTRUCTION SEQUENCE
1. OBTAIN PLAN APPROVAL AND GRADING PERMIT AT A SCHEDULED PRE - CONSTRUCTION CONFERENCE WITH CITY
EROSION CONTROL INSPECTOR, CONTRACTOR RESPONSIBLE FOR EROSION CONTROL, ENGINEER, AND OWNER.
2. INSTALL PROPOSED SILT FENCE, STONE WEIR OUTLETS IN SILT FENCE FROM BEDSTONE DRIVE DOWN TO EX.
STREAM ON BOTH SIDES OF PROPOSED ROADWAY.
3. CLEAR AND GRUBB THIS AREA.
4, INSTALL CONSTRUCTION ENTRANCE.
SITE SELF INSPECTION AS REQUIRED BY NCGS 113A -54.1;
SIGNATURE DATE
5. INSTALL TEMPORARY STREAM CROSSING AND PUMP AROUND PER DETAIL SHOWN ON PLAN.
6. INSTALL 72" RCP. BEGIN WORK ON HEADWALLS. INSTALL RIP RAP PAD AT CONCLUSION OF P'I'PE & HEADWALL
INSTALLATION.
7. ROADWAY TO BE FILLED ONCE PIPE IS INSTALLED.
& CLEAR AND GRUBB AREAS AT SKIMMER BASINS #1 & #2. CLEAR AND GRUBB AREA WHERE SALT FENCE IS TO BE
INSTALLED BEHIND LOTS 25 -33. INSTALL SILT FENCE AND SKIMMER BASINS IN THESE AREAS.
9. CLEAR AND GRUBB SKIMMER BASIN /WET DETENTION POND AREA. CLEAR AND GRUBB LOTS 25 -29.
10. INSTALL WET DETENTION POND /SKIMMER BASIN. INSTALL SILT FENCE AT TOE OF SLOPE. EXCESS CUT FROM THIS
AREA SHALL BE PLACED ON LOTS 25 -29 AS INDICATED ON THE GRADING PLAN.
11. CLEAR AND GRUBB REMAINDER OF SITE.
12. ROUGH GRADE STREETS. INSTALL ANY REMAINING PERIMETER EROSION CONTROL DEVICES SUCH AS SILT FENCE.
GROUND COVER SHALL BE ESTABLISHED ON ALL EXPOSED SLOPES AND FILLS WITHIN 7 CALENDAR DAYS FOLLOWING
THE COMPLETION OF ANY PHASE OF GRADING.
13. INSTALL STORM DRAINAGE AS SHOWN ON PLANS. INSTALL HARDWARE CLOTH AND GRAVEL INLET PROTECTION ON
ALL PROPOSED STORM SEWER STRUCTURES AS THEY ARE BUILT AS SHOWN ON PLANS.
SITE SELF INSPECTION AS REQUIRED BY NCGS 113A -54.1;
SIGNATURE DATE
14. INSTALL WATER AND SANITARY SEWER U11UTIES AS SHOWN ON PLANS.
SITE SELF INSPECTION AS REQUIRED BY NCGS 113A -54.1;
SIGNATURE DATE
15. BRING ROADWAY TO FINAL GRADE.
16. ONCE ROADWAY AND LOTS HAVE BEEN BROUGHT TO FINAL GRADE, INSTALL BASE ABC STONE ON ALL STREET
AREAS. MAINTAIN PREVIOUSLY INSTALLED EROSION CONTROL DEVICES. REMOVE SEDIMENT ACCUMULA71ON FROM IN
FRONT OF SILT FENCE AND INLET PROTECTION AS NEEDED.
17. INSTALL CURB AND GUTTER. BACK FILL CURB.
16. INSTALL FIRST LAYER OF ASPHALT.
19. REMOVE SKIMMER BASIN #1 AND INSTALL BIO -CELL.
20. REMOVE SKIMMER BASIN #2 AND FILL AND GRADE PAD #25.
SITE SELF INSPECTION AS REQUIRED BY NCGS 113A -54.1;
SIGNATURE DATE
21. ONCE ENTIRE SITE HAS BEEN STABILIZED, CLEAN OUT SEDIMENT ACCUMULATION IN THE WET DETENTION POND
AND RESTORE POND TO ITS ORIGINAL VOLUME. REMOVE POROUS BAFFLES AND SKIMMER ASSEMBLY FROM POND AS
SHOWN ON PLANS. INSTALL SHEAR GATE VALVE ON EXISTING BOTTOM DRAIN FOR THE POND.
SITE SELF INSPECTION AS REQUIRED BY NCGS 113A -54.1;
SIGNATURE DATE
22. INSTALL ALL SIDEWALKS AND SEED ANY DISTURBED AREAS WITHIN 7 CALENDAR DAYS FOLLO`61NG THE
COMPLETION OF ANY PHASE OF GRADING. PERMANENT GROUND COVER SHALL BE ESTABLISHED ON ALL DISTURBED
AREAS WITH 14 CALENDAR DAYS FOLLOWING COMPLETION OF CONSTRUCTION.
23. INSTALL FINAL LAYER OF ASPPALT.
24. ONCE SITE CONSTRUCTION IS COMPLETE, PERMANENTLY SEED ALL DISTURBED AREAS. GROUND COVER SHALL BE
ESTABLISHED ON ALL EXPOSED SLOPES AND FILLS WITHIN 7 CALENDAR DAYS FOLLOWING THE COMPLETION OF ANY
PHASE OF GRADING. PERMANENT GROUND COVER SHALL BE ESTABLISHED ON ALL DISTURBED AREAS WITHIN 14
CALENDAR DAYS FOLLOWING THE COMPLETION OF CONSTRUCTION.
SITE SELF INSPECTION AS REQUIRED BY NCGS 113A -54.1;
SIGNATURE DATE
25. ONCE THE ENTIRE SITE IS STABILIZED, REMOVE ALL EROSION CONTROL MEASURES.
SITE SELF INSPECTION AS REQUIRED BY NCGS 113A -54.1;
SIGNATURE DATE
NOTE:
GROUND COVER SHALL BE ESTABLISED ON ALL EXPOSED
SLOPES AND FILLS WITHIN 7 CALENDAR DAYS FOLLOWING
THE COMPLETION OF ANY PHASE OF GRADING. PERMANENT
GROUND COVER SHALL BE ESTABLISHED ON ALL DISTURBED
AREAS WITHIN 14 CALENDAR DAYS FOLLOWING THE
COMPLETION OF CONSTRUCTION.
CITY OF GREENSBORO
BEFORE BEGINNING ANY UTILITY OR GRADING
WORK WITHIN DEDICATED UTILITY OR STREET
RIGHT - OF - WAYS CONTACT ENGINEERING
DIVISION 0 373 -2302
EROSION CONTROL INSPECTION NOTE:
PROPERTY OWNER, FINANCIALLY RESPONSIBLE
PARTY, OR AGENT TO PERFORM SELF INSPECTION
FOLLOWING ALL PHASES OF EROSION CONTROL AND
CONSTRUCTION. SIGN AND DATE SELF INSPECTION
CHART ON COVERSHEET FOLLOWING SELF
INSPECTION OF EACH PHASE OF EROSION CONTROL
AND CONSTRUCTION.
NOTE:
1. ALL CONSTRUCTION TO BE TO THE CITY OF
GREENSBORO STANDARDS AND SPECIFICATIONS.
2. CONTRACTOR TO VERIFY DEPTH AND LOCATION
OF ALL EXISTING UTILITIES PRIOR TO CONSTRUCTION.
3. CONTRACTOR TO COMPLY WITH THE NEW
O.S.H.A. REGULATIONS CONCERNING TRENCHING
FOR INSTALLATION OF UTILITIES.
4. NO SUBSURFACE INVESTIGATION CONDUCTED
BY EVANS ENGINEERING, INC.
PROJECT TITLE:
GRIFFIN'S KNOLL
GREENSBORO, NORTH CAROLINA
ihv6��yyanS ®� ®� ® ®� C� r� Oct
-- -I- - --
-Since 1974- rid yV
I Engineers Surveyors Planners g
• X773 e
4609 Dundas Drive Greensboro, NC 27407 ®, '� ti ® 3 . GV °1 /t��o
Phone 336 - 854 -8877 Fax 336 - 854-8876 r e
FIRM LICENSE #C -0168 as"a °e • ®o�s�ars e
PROJECT: 823-11 DESIGN BY: ADL DRAWN BY: AL
DWG: H: \DRAWINGS \HERB PARKS \Trosper Rood \Griffin Mill Site -4th IAYOUT.dwg`' "'1T
SHEET DESCRIPTION:
EROSION DETAIL
SCALE: NTS DATE: JANUARY 22, 2013
REVISIONS: 02 -27 -13
%15
SHEET
REVISIONS: 03 -05 -13
REVISIONS: 03 -19 -13