20050732 Ver 21_More Info Received_20110906

v?MCIQM&CREED
I TO: NCDENR - DWQ 401 Unit
512 N Salisbury Street
Archdale Building -91h Floor
Raleigh, NC 27604
ATTENTION: Ms. Annette Lucas
LETTER OF TRANSMITTAL
DATE: September 2, 2011
PROJECT NO: 2735_0072 TASK NO: EXP
RE: Briar Chapel -Boulder Point Drive Extension
rb?-D]31Olt
TRANSMITTAL NO: 1 PAGE 1 OF 1
WE ARE SENDING: ? Originals ® Prints ? Shop Drawings ? Samples
? Specifications ? Calculations ? Other -
Quantity Drawing No. Rev. Description Status
2 Boulder Point Drive Design Plans (C-5, D-8) G
2 Boulder Point Drive Narrative G

Issue Status Code
REMARKS:
A. Preliminary B. Fabrication Only C. For Information D. Bid
E. Construction F. For Review & Comments G. For Approval H. See Remarks
Ms. Lucas,
Please find the enclosed documents for your review. Please let us know if you have any questions or
comments. Thank you.
1730 Varsity Drive, Suite 500 Raleigh, NC 27606 919/233-8091 Ea. 919/233-8031
Cc: U McKIM & CREED, INC.
SEP 0 6 2011
MR-YATMOUAUTY
Signed
,dam avM-Ir
Avant, PE, LEED AP
401 NARRATIVE AND
SUPPORTING CALCULATIONS
Briar Chapel Development
Boulder Point Drive Extension
Chatham County, North Carolina
September 2, 2011
Prepared for:
BRIARS CHAPEC
Newland commumnEs
NNP Briar Chapel, LLC
16 Windy Knoll Circle
Chapel Hill, North Carolina 27516
Prepared By:
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1730 Varsity Drive, Suite 500 ``?????????C
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Raleigh, North Carolina 27606 ?
Phone: [phone]
Fax: [phone] - SEAL
028419
M&C Project No. 02735-0069 = 0'..
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PROJECT DESCRIPTTON
The purpose of the project is to construct Boulder Point Drive from its current terminus point within
the development to it intersection with Briar Chapel Parkway.
The extension of Boulder Point Drive will include approximately 1,660 If of 22' wide asphalt
pavement with 30" curb and gutter.
Upon completion of the project's construction, the proposed public roads will be turned over to
and maintained by NCDOT.
SITE DESCRIPTION
The project limits are an approximately 4.75 acre area. The project can be reached by entering
Granite Mill Boulevard from Andrews Store road and continuing along Boulder Point Drive to its
current terminus near the end of the existing school project.
The site was previously cleared and grubbed and approved erosion control measures were
installed under separate land disturbing permit.
Due to the linear nature of the project, the roadway will run nearby several perennial and
intermittent streams and areas of wetlands as identified through previous site studies. No stream,
stream buffer or wetland will be impacted by the development of this project. These areas are
eventual tributaries to Pokeberry Creek (WS-IV; NSW).
The project area has rolling terrain where the highest existing elevation is approximately 544' MSL
and the lowest is 500' MSL. Slopes range from 217o to 15°/7o in localized areas.
SOILS
According to the Chatham County Generalized Soil Survey, the soils within the project area are
classified as Wedowee sandy loam, 21/o to 15% slopes (WeB, WeC, WeD) and bouldery WdC, No
to 15% slopes. (WdC). The bouldery slopes are found along the Boulder Point Drive Extension.
The following soil descriptions are associated with the soils found on the site:
We(X), WdC - Wedowee sandy loam soils are often found in piedmont uplands, along
ridges and side slopes. Permeability is moderate and the soils are well drained. Soils have
a low shrink/swell potential. The seasonal high water is generally more than 6.0 feet
below the surface.
PLANNED STORMWATER MANAGEMENT PRACTICES
As a result of discussions with DWQ, Boulder Point Drive will be proposed as a temporary low
density area that will utilize Level Spreader/Vegetated Filter Strip devices to treat stormwater
runoff from the roadway area as well as provide diffuse flow offsite for the 1 " storm event. These
devices are designed using accepted methods established in the NC BMP Manual. As
residential areas are constructed in the locations of these devices, they will be removed and
stormwater will be re-directed into a permanent BMP, likely a wet detention pond, that will be
designed at that time. It is understood that there is a 30-month window to install the permanent
BMP devices.
STORMWATER CALCULATIONS
Water quality flows were calculated using methods provided in the NC BMP Manual. For
proposed engineered level spreader/vegetated filter strip devices, a 1 in/hr rainfall would
produce the following flows:
LS/VFS #1 1.27 cfs
LS/VFS #2 1.16 cfs
Using culvert modeling software, these flows produced flow depth in 6" PVC conduit of 0.49'
(LS/VFS # 1) and 0.32' (LS/VFS #2). In order to isolate the water quality runoff from larger flows,
the smaller outlet pipe was set at a lower elevation equal to the flow depths in the conduit. For
example, the bypass outlet for SDMH #1 is set at elevation 494.00 whereas the 6" outlet to the
level spreader forebay is set at elevation 493.50. Once the flow is greater than 1.27 cfs, the
water will flow into the bypass pipe.
MAINTENANCE CONSIDERATIONS
The property owner shall be responsible for periodic inspection and maintenance of all
permanent BMP Devices. Any measure that fails to function as intended shall be repaired
immediately.
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CALCULATIONS
Culvert Calculator Report
Flow Splitter SDMH #1
Solve For: Headwater Elevation
Culvert Summary
Allowable HW Elevation
Computed Headwater Elevation
Inlet Control HW Elev.
Outlet Control HW Elev. 501.01 ft
498.93 ft
495.50 ft
498.93 ft Headwater Depth/Height
Discharge
Tailwater Elevation
Control Type 10.86
1.27 cfs
0.00 ft
Outlet Control

Grades
Upstream Invert
Length 493.50 ft
180.00 ft Downstream Invert
Constructed Slope 492.00 ft
0.008333 Wit

Hydraulic Profile
Profile CompositeM2PressureProfile
Slope Type Mild
Flow Regime Subcritical
Velocity Downstream 6.51 ft/s Depth, Downstream
Normal Depth
Critical Depth
Critical Slope 0.49 ft
N/A ft
0.49 ft
0.027002 ft/ft

Section
Section Shape
Section Material
Section Size
Number Sections Circular
PVC
6 inch
1 Mannings Coefficient
Span
Rise 0.010
0.50 ft
0.50 ft

Outlet Control Properties
Outlet Control HW Elev.
Ke 498.93 ft
0.50 Upstream Velocity Head
Entrance Loss 0.65 It
0.33 ft

Inlet Control Properties
Inlet Control HW Elev. 495.50 ft
Inlet Type Square edge w/headwall
K 0.00980
M 2.00000
C 0.03980
Y 0.67000 Flow Control
Area Full
HDS 5 Chart
HDS 5 Scale
Equation Form Submerged
0.2 ftz
1
1
1
Project Engineer: gavant
untitled.cvm McKim & Creed Raleigh Master CulvertMaster v3.2 [03.02.00.01]
06/22/11 04:19:50 PM© Bentley Systems, Inc. Haestad Methods Solution Center Watertown, CT 06795 USA [phone] Page 1
Culvert Calculator Report
Flow Splitter SDMH #2
Solve For: Headwater Elevation
Culvert Summary
Allowable HW Elevation
Computed Headwater Elevation
Inlet Control HW Elev.
Outlet Control HW Elev. 513.99 ft
510.14 ft
510.14 ft
509.74 ft Headwater Depth/Height
Discharge
Tailwater Elevation
Control Type 3.42
1.16 cfs
0.00 ft
Inlet Control

Grades
Upstream Invert
Length 508.43 ft
51.00 ft Downstream Invert
Constructed Slope 506.00 ft
0.047647 ft/ft

Hydraulic Profile
Profile
Slope Type
Flow Regime
Velocity Downstream S2
Steep
Supercritical
8.82 ft/s Depth, Downstream
Normal Depth
Critical Depth
Critical Slope 0.32 ft
0.32 ft
0.48 ft
0.022211 ft/ft

Section
Section Shape
Section Material
Section Size
Number Sections Circular
PVC
6 inch
1 Mannings Coefficient
Span
Rise 0.010
0.50 ft
0.50 ft

Outlet Control Properties
Outlet Control HW Elev.
Ke 509.74 ft
0.50 Upstream Velocity Head
Entrance Loss 0.55 ft
0.28 it

Inlet Control Properties
Inlet Control HW Elev. 510.14 ft
Inlet Type Square edge w/headwall
K 0.00980
M 2.00000
C 0.03980
Y 0.67000 Flow Control
Area Full
HDS 5 Chart
HDS 5 Scale
Equation Form Submerged
0.2 ft2
1
1
1
Project Engineer: gavant
untitled.cvm McKim & Creed Raleigh Master CulvertMaster v3.2 [03.02.00.011
06/22/11 04:19:50 PM© Bentley Systems, Inc. Haestad Methods Solution Center Watertown, CT 06795 USA [phone] Page 2
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. - _ _ ~ , i ~ . >f . - - - \ INV. 508.30, ~ ~ ~ ~ ! + , ~ I I ~ I ~ ~ A E ( ~ 1 ~ ~ ~ ~ I ~ ~ \ ~ I ~ / ~ ~ ~ ~ V A i i ~ \ \ ~ I ~ X538-- ~ ~ % i ~ j ~ I ~ V ' ~ ~ ~ t
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~ ~ / ~ ~ 'OUTLET ~ \ ~ I / ) ~ / ~ / i / ~ ~ \ , A ~ A of OVERHEAD POWER LINE
e - - - - - 10' NO BUILD BUFFER LINE
a - - - - - - RIPARIAN BUFFER LINE
NEW STORM DRAINAGE PIPE
ROADWAY CENTERLINE
CONSTRUCTION SEQUENCE: CONSTRUCTION SEQUENCE (CONT. GENERAL NOTES. STORM DRAINAGE NOTES:
SF/TPF COMBINATION SILT/TREE PROTECTION FENCIN
1. THE INTENT OF THE CONSTRUCTION SEQUENCE IS TO PROVIDE THE CONTRACTOR WITH A GENERAL GUIDE 21. AS FINAL GRADES AND SLOPES ARE ESTABLISHED, THE CONTRACTOR SHALL SEED, MULCH AND 1. ALL DIMENSIONS AND GRADE5 SHOWN ON THE PLANS SHALL BE FIELD VERIFIED BY THE CC FOR CONSTRUCTION PURPOSES. THIS SEQUENCE IS NOT INTENDED TO OUTLINE ALL CONSTRUCTION INSTALL ROLLED EROSION CONTROL PRODUCTS ON SLOPES GREATER THAN 10 FEET IN HEIGHT. TO CONSTRUCTION. CONTRACTOR SHALL NOTIFY OWNER IF ANY DISCREPANCIES EXIST PRIOF IFIED BY THE CONTRACTOR PRIOR 1. STORM DRAINAGE PIPES SHALL BE: ~IES EXIST PRIOR TO TPF TREE PROTECTION FENCING
ACTIVITIES ON THIS PROJECT. CONSTRUCTION. NO ADDITIONAL COMPENSATION tMLL BE PAID TO CONTRACTOR FOR ANY WI i0R FOR ANY WORK DONE DUE TO o RCP/CLASS III FOR STORM DRAINAGE INSIDE i'UBLIG RIGHT-DF-WAY OR
22. CONSTRUCT ROAD BEDS. INSTALL ABC STONE FOR ROADS AS SHOWN ON PLANS. INSTALL SIDEWALKS DIMENSIONS OR GRADES SHOWN-INCORRECTLY ON THESE PLANS IF SUCH NOIIFICA?ION HAS 2. ALL EROSION CONTROL MEASURES SHALL BE CONSTRUCTED IN ACCORDANCE WITH THE CHATHAM COUNTY AND MULTI-USE TRAIL AS SHOWN ON PLANS. OTIFICA?ION HAS NOT BEEN GIVEN. CONNECTNG INTO STRUCTURE INSIDE PUBLIC r21GHT-OF-WAY IN ACCORDANCE WITH NCDOT STANDARDS. - - --SOD- - - EXISTING CONTOUR
SOIL EROSION AND SEQIMENTATION CONTROL ORQINANCE. 2. CONTRACTOR SHALL NOTIFY "NORTH CAROLINA ONE CALL AT 1-800-632-4949 AT LEAST 4949 AT LEAST 48 HOURS PRIOR ~ A-2000 PVC FOR PRIVATE STORM LINES WITHiN PRIVATE ALLEYS. ALL
23. REMOVE TEMPORARY CONSTRUCTION ENTRANCES AND INSTALL BINDER COURSE OF ASPHALT PAVING. TO BEGINNING CONSTRUCTION OR EXCAVATION TO HAVE EXISTING UTILITIES LOCATED. CONTI 3. ALL EROSION CONTROL MEASURES SHALL BE INSPECTED WEEKLY AND AFTER RAINFALL EVENTS. NEEDED CONTACT ANY LOCAL UTILITIES THAT PROVIDE THEIR OWN LOCATOR SERVICES INDEPENDENT LOCATED. CONTRACTOR TO STORM DRAINAGE CONSTRUCTION FOR A-2000 PVC SHALL BE IN ES INDEPENDENT OF "NORTH ACCORDANCE WITH PIPE MANUFACTURER'S SPECIFICATIONS. PIPE JOINTS 500 PROPOSED CONTOUR
REPAIRS SHALL BE MADE IMMEDIATELY. 24. CARRY OUT FINAL GRADING. RESPREAD TOPSOIL IN NON-STRUCTURAL LOCATIONS. CONTRACTOR TO CAROLINA ONE CALL". SHALL BE WATERTIGHT PER ASTM 03212. PIPE AND FITTINGS SHALL BE
REFER TO GEOTECHNICAL RECOMMENDATIONS FOR DEPTH COMPACTION REQUIREMENTS FOR TOPSOIL 4. IF IT IS DETERMINED DURING CONSTRUCTION THAT SIGNIFICANT SEDIMENT IS LEAVING THE SITE, DESPITE SPREADING. 2. WETLANDS EXIST ON THE SITE. THE CONTRACTOR SHALL NOT DISTURB ANY WETLANDS LOC INSTALLED PER AASHTO SECTION 30 AND AASHTO SECTION 12 LIMITS OF DISTURBANCE 'WETLANDS LOCATED ON THE SITE.
PROPER IMPLEMENTATION AND MAINTENANCE, THE CONTRACTOR IS OBLIGATED TO TAKE ADDITIONAL 2. ALL CONCRETE SHALL MEET A MINIMUM 3,000 PSI COMPRESSIVE STRENGTH.
CORRECTIVE ACTION. CONTACT OWNER'S REPRESENTATIVE AND ENGINEER WITH ANY ADDITIONAL MEASURES 25. PERFORM SEEDING AND MULCHING AS REQUIRED IN ACCORDANCE WITH REQUIREMENTS SHOWN ON 3. OVERHEAD ELECTRIC LINES MAY EXIST ON THE SITE. CONTRACTOR SHALL CONTACT DUKE F ;ONTACT DUKE POWER AT (336) \ \ TEMPORARY DIVERSION DITCH
NEEDED" THESE PLANS. 634-4633 PRIOR TO COMMENCING ANY ACTIVITY WITHIN 200-FT OF DUKE POWER RIGHT OI POWER RIGHT OF WAY. 3. ALL PIPE IN STORM DRAIN STRUCTURES SHALL BE STRUCK EVEN WITH INSIDE WALL.
5. CONTRACTOR SHALL ESTABLISH GROUNDCOVER ON DISTURBED AREAS WITHIN THE NUMBER OF CALENDAR 26. ONCE ALL UPSTREAM AREAS HAVE BEEN SIGNIFICANTLY STABILIZED WITH IMPERVIOUS COVER OR 4. PRIOR TO CONSTRUCTION, CONTRACTOR SHALL ARRANGE AND ATTEND A PRECONSTRUC1TOt` RECONSTRUCTION CONFERENCE WITH 4. THE INTERIOR SURFACES OF ALL STORM DRAINAGE STRUCTURES SHALL BE POINTED UP oQOQOOOOO TEMPORARY CONSTRUCTION ENTRANCE AND SMOOTHED TO AN ACCEPTABLE STANDARD USING MORTAR MIXED TO
DAYS AFTER COMPLETION OF GRADING PER THE SCHEDULE BELOW: VEGETATION, CONSTRUCT THE LEVEL SPREADERS/VEGETATED FILTER STRIPS. NO SEDIMENT SHALL CHATHAM COUNTY, OWNER AND ENGINEER. DRAIN INTO THE LEVEL SPREADERS/VEGETATED FILTER STRIPS ONCE CONSTRUCTED. IF SEDIMENT MANUFACTURER'S SPECIFICATIONS. RIPRAP OUTLET PROTECTION
GRADUAL SLOPES: (15) CALENDAR DAYS ENTERS THE LEVEL SPREADERS/VEGETATED FILTER STRIPS AFTER THEY ARE CONSTRUCTED, IT SHALL 5. EXISTING UT1U11ES AND STRUCTURES SHOWN, BOTH UNDERGROUND AND ABOVE GROUND, AI OVE GROUND, ARE BASED ON BEST
MODERATE SLOPES: (10) CALENDAR DAYS BE THE RESPONSIBILITY OF THE CONTRACTOR TO REMOVE ALL SEDIMENT LADEN SOIL AT NO AVAILABLE RECORD DRAWINGS. STEEP SLOPES: (7) CALENDAR DAYS ADDITIONAL COST TO THE OWNER. 5. ALL BACKFILL SHALL BE NON-PLASTIC IN NATURE, FREE FROM ROOTS, VEGETATION ®o MATTER, WASTE CONSTRUCTION MATERIAL OR OTHER OBJECTIONABLE MATERIAL. UTILIZED two BLOCK & GRAVEL INLET PROTECTION
6. SOIL UNDER BUILDINGS, PAVED AREAS AND WITHIN SLOPES GREATER THAN 3:1 (H: V) SHAL 3:1 (H: V) SHALL BE APPROVED, MATERIAL SHALL BE CAPABLE OF BEING COMPACTED BY MECHANICAL MEANS AND SHALL
SLOPES ARE AS DEFINED IN THE CHATHAM COUNTY SOIL EROSION AND SEDIMENTATION CONTROL 27. ONCE ALL GROUNDCOVER HAS BEEN ESTABLISHED, AND OTHER CONSTRUCTION IS COMPLETE, PLACED AND COMPACTED AS RECOMMENDED BY THE GEOTECHNICAL ENGINEER. THESE SOIL' ORDINANCE. CONTACT CHATHAM COUNTY EROSION CONTROL OFFICER AND ENGINEER BEFORE REMOVING ANY COMPACTED TO THE STANDARD PROCTOR MAXIMUM DRY DENSITY UNLESS OTHERWISE RECD .ER. THESE SOILS SHALL BE HAVE NO TENDENCY TO FLOW OR BEHAVE IN A PLASTIC MANNER UNDER THE TAMPING )THERWISE RECOMMENDED BY THE BLOWS OR PROOF ROLLING. t 0 ARC FILTER INLET PROTECTION
TEMPORARY EROSION CONTROL MEASURES. GEOTECHNICAL ENGINEER.
6. CONTRACTOR SHALL ARRANGE PRE-CONSTRUCITON MEETING WITH THE OWNER'S REPRESENTATIVE, 6. MATERIALS DEEMED AS UNSUITABLE FOR BACKFILL PURPOSES BY THE OWNER'S CHECK DAM G WATER OCCUR AND ALL AREAS REPRESENTATIVE SHALL BE REMOVED AND REPLACED WITH SUITABLE MATERIAL.
ENGINEER AND CHATHAM COUNTY. 28. AFTER SITE IS COMPLETELY STABILIZED, REMOVE ALL TEMPORARY MEASURES AND INSTALL 7. ALL GRADED AREAS SHALL BE SLOPED SUCH THAT NO AREAS OF STANDING WATER OCCUF PERMANENT VEGETATION A5 REQUIRED AND ON ANY RESULTING BARE AREAS. POSITIVELY DRAIN TO DRAINAGE STRUCTURES, SWALES OR STORMWATER MANAGEMENT FACT aNAGEMENT FACILITIES.
7. OBTAIN LETTER OF PLAN APPROVAL FOR SEDIMENTATION AND EROSION CONTROL FROM CHATHAM COUNTY 7. BACKFILLING OF TRENCHES SHALL BE ACCOMPLISHED IMMEDIATELY AFTER PIPE IS LAID. S AND SHALL REPLACE ALL THE FILL AROUND THE PIPE SHALL BE THOROUGHLY COMPACTED TO 95% OF THE
SOIL EROSION & SEDIMENTATION CONTROL. 29. EROSION CONTROL DEVICES SHALL REMAIN IN PLACE AND SHALL BE MAINTAINED UNTIL SOIL IS 8. CONTRACTOR IS RESPONSIBLE FOR PROTECTION OF ALL PROPERTY CORNERS AND SHALL RI NEEDED AT OTHER LOCATIONS THROUGHOUT THE BRIAR CHAPEL DEVELOPMENT, WHICH WILL BE MARKERS REMOVED IF DAMAGED DURING CONSTRUCTION. MAXIMUM DRY DENSITY OBTAINABLE WITH THE STANDARD PROCTOR TEST. THE TOP EIGHT
8. CONTRACTOR TO POST EROSION CONTROL PERMIT PROMINENTLY ON SITE AT ALL TIMES. PERMITTED SEPARATELY. (8)INGHES SHALL BE COMPACTED TO 100% STANDARD PROCTOR. IGHOUT CONSTRUC110N.
9. CONTRACTOR IS RESPONSIBLE FOR ALL DEWATERING AS NECESSARY THROUGHOUT CONSTRI 9. CONTRACTOR TO VERIFY LOCATION AND DEPTH OF EXISTING UTILITIES TO AVOID CONFLICT DURING LIMITS OF DISTURBANCE NOTES: 8. UNDER NO CIRCUMSTANCES SHALL WATER BE ALLOWED TO RISE IN UNBACKFILLED
INSTALLATION OF EROSION CONTROL MEASURES AND STORM DRAINAGE. CONTRACTOR IS TO CALL 10. CONTRACTOR IS RESPONSIBLE FOR ADHERING TO ALL PERMIT CONDNTONS, MONITORING ANC MONITORING AND REPORTING TRENCHES AFTER PIPE HAS BEEN PLACED.
1-800-632-4949 FOR 'NC ONE CALL" TO HAVE UTILITIES LOCATED. 1. LIMITS OF DISTURBANCE LINES ARE CLEARING LIMIT LINES WHICH WILL BE FLAGGED FOR A MINIMUM OF REQUIREMENTS. 9. ALL FLARED END SECTIONS DISCHARGING INTO WATER QUALITY PONDS WILL HAVE A CALL N.C. ONE
OPERTY LINES EASEMENTS LANDSCAPE ONE PER 50-FT OR CLOSER DEPENDING ON VISIBILITY. 11. REFER TO SHEET D-4 FOR PROPOSED ROAD CROSS SECTION DETAILS AND PAVEMENT SCHI 10. CONTRACTOR TO HAVE A PROFESSIONAL LAND SURVEYOR FLAG PR , PAVEMENT SCHEDULE. CONCRETE PAD POURED UNDERNEATH THE FLARED END SECTION IN ACCORDANCE WITH CALL CENTER
BUFFERS, STREAM BUFFERS, TREE PROTECTION AREAS AND LIMITS OF DISTURBANCE. 2. SILT FENCE AND TREE PROTECTION FENCE LINES ALSO DELINEATE THE LIMITS OF DISTURBANCE. ALL SILT 12. STREAM AND WETLAND LOCATIONS ARE BASED ON DELINEATIONS PROVIDED BY SOIL AND E PROVIDED'CONSTRUCTION DETAILS. BEFORE YOU DIG OBY SOIL AND ENVIR.t?NMENTAL 10. RIM ELEVATIONS OF STORM DRAIN STRUCTURES SHALL BE FIELD VERIFIED. STO P
11. INSTALL TEMPORARY CONSTRUCTION ENTRANCES AS SHOWN ON SHEET C-5 AND C-6. FENCING OR TREE PROTECTION FENCING SHALL BE INSTALLED INSIDE LIMITS OF DISTURBANCE. CONSULTANTS IN RALEIGH, NC -CONTACT SEAN CLARK AT 919-846-5900.
12. INSTALL TREE PROTECTION AND SILT FENCING AS SHOWN AND DETAILED ON PLAN. CLEAR ONLY AS TREE SAVE NOTE: 13. EXISTING INFRASTRUCTURE AS SHOWN MAY BE UNDER CONSTRUCTION AND SHALL BE FIELD 1-800-632-4949 SHALL BE FIELD VERIFIED BY 11. RIM ELEVATIONS FOR GRATE INLETS WITHIN ALLEYS SHALL MATCH INITIAL LIFT OF BINDER AVOID UTILITY
NECESSARY TO INSTALL THESE DEVICES. CONTRACTOR. REFER TO THE FOLLOWING JOHN R. MCADAMS BRIAR CHAPEL PLANS AND CC PLANS AND CONSTRUCTION COURSE. AT TIME OF FINAL SURFACE LIFT OF ASPHALT, CONTRACTOR SHALL RAISE DAMAGE
i. CONTRACTOR SHALL SAVE EXISTING SPECIMEN TREES ALONG BRIAR CHAPEL PARKWAY MEDIAN WHERE BULLETINS FOR ADDI110NAL INFORMATION: 13. INSTALL INLET PROTECTION DEVICES AS DETAILED IN THESE PLANS ON EXISTING STRUCTURES ALONG DEEMED FEASIBLE AS DIRECTED BY OWNER. GRATE INLET TOPS TO MATCH FLUSH WITH FINAL SURFACE PAVEMENT ELEVATION.
BRIAR CHAPEL PARKWAY AND BOULDER POINT DRIVE -RECLAMATION FACILITY EROSION CONTROL PLAN, SEALED JULY 29, 2005 12. STORM DRAINAGE WITHIN PRIVATE EASEMENTS TO BE OWNED, OPERATED AND MAINTAINED
-PHASE 1 CONSTRUCTION PLANS, SEALED OCT 21, 2005. 14. CONTRACTOR TO RESTORE EXISTING SEDIMENT BASINS ON SOUTH SIDE OF BOULDER POINT DRIVE TO -WEST EXTENSION GRADING PLAN (INTERIM), SEALED MAR 1, 2007. BY HOME OWNER'S ASSOCIATION OR AGENT THEREOF.
REQUIRED DIMENSIONS AND MUCK OUT AS NEEDED. CONTRACTOR TO INSTALL BAFFLES AS SHOWN. -PHASE 3 CONSTRUCTION PLANS, SEALED DEC 4, 2006. 13. LENGTHS SHOWN FOR STORM DRAINAGE PIPES ARE MEASURED FROM CENTER OF STORM
-PHASE 4 CONSTRUCTION PLANS, SEALED JAN 15, 2007. 15. CONTACT CHATHAM COUNTY SOIL EROSION & SEDIMENTATION AT 919-545-8339 AND ENGINEER UPON -WATER QUALITY PONDS 5 AND 6 CONSTRUCTION PLANS, SEALED AUG 24, 2006. STRUCTURES AND TO ENDS OF FLARED END SECTIONS. SLOPES CALCULATED ARE BASED 4, 2006. ON THIS LENGTH.
COMPLETION OF INITIAL EROSION CONTROL MEASURES. -PUMP STATION CONSTRUCTION PLANS, DATED APR 3, 2006.
-PHASE 4 - POD D CONSTRUCTION PLANS, SEALED SEP 17, 2007. 14. CB DENOTES CATCH BASINS TO BE INSTALLED IN THE CENTERS OF PAVED ALLEYS AND NON-PAVED AREAS. REFER TO NCDOT DETAILS 840.19 AND 840.22 ON SHEET D-3.
16. ONCE CHATHAM COUNTY HAS APPROVED THESE MEASURES, THE CONTRACTOR SHALL BEGIN SELECTIVE -PHASE 3 & 4 EROSION CONTROL PLANS, SEALED JULY 26, 2007. CLEARING AND GRUBBING WITHIN THE LIMITS OF DISTURBANCE. THE CONTRACTOR SHALL REMOVE ALL
ROOT MATTER AND ORGANICS FROM WITHIN THE CLEARING LIMITS. TOPSOIL SHALL BE STOCKPILED AT 14. BEFORE STARTING ANY CONSTRUCTION OF IMPROVEMENTS WITHIN ANY NCDOT STREET OR F OT STREET OR HIGHWAY 15. CI DENOTES CURB INLETS TO BE INSTALLED IN THE CURB LINES OF ROADWAYS. REFER fS AND ENCROACHMENTS AND KEEP TO NCDOI DETAILS 840.02 AND 840.03 ON SHEET D-3.
LOCATION SHOWN ON SHEET C-5. RIGHT-OF-WAY, CONTACT NCDOT DISTRICT OFFICE AND OBTAIN ALL PERMITS AND ENCROA( 17. BEGIN SITE GRADING OPERATIONS. GRADE IN AREAS FOR LEVEL SPREADERS/VEGETATED FILTER STRIPS COPIES ON CONSTRUCTION SITE AT ALL TIMES. ALSO CONTACT NCDOT DISTRICT OFFICE 24 RICT OFFICE 24 HOUR$ IN NORTH
AND SCOUR HOLES. ADVANCE BEFORE PLACING CURB AND GUTTER AT [phone].
18. INSTALL STORM SEWER PIPES AS SHOWN ON THE PLANS WITH EROSION CONTROL MEASURES TO 15. TOTAL DISTURBED AREA = 12_80 ACRES 50' 0 50' 100'
ELIMINATE SILT FROM ENTERING PIPE SYSTEMS.
19. INSTALL ARC FILTER INLET PROTECTION AND BLOCK AND GRAVEL INLET PROTECTION AT INLETS AS SHOWN SCALE: 1"=50' (Horiz.)
AS THEY ARE BROUGHT TO FINAL GRADE.
20. THE CDNTRACTOR SHOULD INSTALL SLOPE DRAINS AS NEEDED, BASED ON FIELD CONDITIONS, OR AS
DIRECTED BY THE ENGINEER, OR CHATHAM COUNTY EROSION CONTROL PERSONNEL ON SLOPES NOT
SPECIFIED IN THESE PLANS.
d SEAL >>>111111111l1/~~ SEAL
N BAR ~R~........... Oli BRIAR CHAPEL DATE: JUNE 17, 20„ SCALE ~&G FIIE NUMBER
~ p4 ON ' BRIAR CHAPEL PARKWAY MCE PROJ. # 02735-0072 CG101 DRAWN GCA HORIZONTAL: oRnv~NC Nur~BER
CCAI ~nl II n~~ pnl~~T ~RI,I~ ~YT~I~I~II~ DESIGNED GCA 1" -,00 ^ s
JLr%L -111W 028419 = 1730 Varsity Drive, Suite 500 uvvLVLi® ' v'oi 6 vl%l rL L11% ~L~~OMl6V6~9e.~ VERTICAL: - CHECKED CHS
BRIARSKICH 4®®9i Raleigh, North Carolina 27606 X,C H A P E l:m ~ PROJ. MGR. GML NA
%q .ENGINEER., p\~, Phone: [phone], Fax: [phone]
2 DIVERSION DITCHES & CHECK DAMS ADDED/SUBMITTAL TO CHATHAM COUNTY EROSION CONTROL/DWQ 401 UNIT 2011.06.22 F-1222 by ` u~ by GRADING, DRAINAGE & STATUS: REMSION
1 SUBMITTAL TO NCDOT 2011.06.17 I ` 1\\\ /1/111III11,,,\ C® MS EROSION CONTROL PLAN ISSUED FOR PERMITTING 2
REV.NO. DESCRIPTIONS DATE REVISIONS www.mckimcreed.com Newland c® u -

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J ' ~ " ~ . - - . ~ - ~ ~ 1NV. OUT 18" RCP = 494.00 ~ ~ ~ ~ _ INV OUT (6" PVC) = 508.43 - N~I (
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I~ \ ~ ~ j ~ - - ~ ~ ~ ~ ~ ® ~ ~ ~ ~ CLASS A RIPRAP 12" DEEP _ ~ ~ ~ ' ~ ~ % ~ ~ ~
~ TO THE E1Ml FS SHOWN _ ~ 6° SOLID PVC ~ , / ~ i ~ r l I
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1 t ~ ~ I / \ ~ ~ ~ ~ 6" SOLID PVC OUTLET \ t ~ V ~ ~ A ~ ~ i 6" PERFORATED PVC r ~ ~ o ~ - ~ ~ ' ~
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~ / / / / ~ to ~ ~ u~ / ~ ~ - - - - l l ~ / 2.1 - ~ 4 ~ W ~ % ~ ~ ~ ' VE6ETATl UE FICTER STRIP
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; ~ T0, THE LIMITS SHOl4?V ~ A ~ ~ } ® ~ ~ ~ V I i ~ \ \ ~ i / ~ 130.0' / / ~ / ~ f
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~ 1 ~ ~ ,a • "~~.:~i A ~ 1 ~ I ~ \ I ~ ~ Y,,r ~ ~ ~ ~ / ~ ~ , ! l ~ ~ 30' CHAINAM COUNTY ~ ~ ~ STREAM BUFFER ~
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LEVEL SPREADER f VEGETATIVE FILTER STRIP #2
` ~ ~ ~ 0 1 \o~ i I v \ ~ ~ ti a I I I ~ , ~ ~
I o ~ ~ ~I I I , ' ~ NORTH
1 ! ~ ~ °j ~ ' ~ I I / ~ A ~ ~ ~ N IN ~ ( ~ i ~ ~ i ~ ~ j ~ j ~ 0 ~o ~ ~ y ~ i
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LEVEL SPREADER VEGETATIVE FILTER STRIP 1
SCALE: 1"=20' t. "J
~:k-'\ A3 B3 C3
NORTH ~ ~ ~
LIP ELEV. 0.5' OR GREATER BELOW 3" LAYER ~57 STO .R ~57 STONE
CONCRETE BYPASS APRON ELEV. UNDERLAIN WITH AIN WITH
FILTER FABRIC FABRIC A
B
C
10' TYP. 8" 3 NN1FpRM
S[,OPE
EXISTING NOTES:
GROUND ~w ; ,
4" COURSE ~ ~a;,~ 1. THE VEGETATED FILTER STRIP SHALL HAVE A UNIFORMLY GRADED SLOPE. ALL SLOPES Al-A3,
ENGINEERS SAND , ENGINEERED B1-B3 & C1-C3 SHALL HAVE EQUAL ELEVATIONS.
1.0 TYP FILTER STR FILTER STRIP 2.THE VEGETATED FILTER STRIP SHALL BE GRADED PER THE SLOPES SHOWN ON THE PLANS SHEETS.
BLIND SWALE . 4 REBAR REFER TO SHEET C5103 FOR SLOPES.
TO BE SODDED @12" O.C. 3. THE VEGETATED FILTER STRIP AND ANY ADJOINING SIDE SLOPES SHOULD BE COVERED WITH A
2.5' 6 MINIMUM OF 6" OF TOPSOIL.
1" WASHED „ ` 10 MIN 4. THE TOPSOIL SHOULD BE AMENDED WITH:
GRAVEL CONCRETE -2 CUBIC YARDS OF PEAT MOSS/1,000 SF OF TOPSOIL
-75 LBS GROUND LIMESTONE/1,000 SF OF TOPSOIL -40 LBS 5-10-10 STARTER FERTILIZER/1,000 SF OF TOPSOIL
„ 6 PERFORATED 4~=.
PVC PIPE. MAINTAIN 5. VEGETATED FILTER STRIP SHALL BE PLANTED WITH TALL FESCUE SOD ON TOP OF AMENDED TOPSOIL.
0.5~ SLOPE TOWARD 1 SOD SHOULD BE GROWN IN NON-CLAYEY SOILS OR SHOULD BE WASHED SOD.
OUTLET 6. THE SOD SHOULD BE WATERED SEVERAL TIMES A WEEK FOR 1 TO 3 WEEKS, KEEPING THE TOP 1.5 INCHES OF
SOIL MOIST, UNTIL ROOTS BEGIN TO BECOME ESTABLISHED.
LEVEL BLIND SWALE CONCRETE LIP
SPREADER BOTTOM EL. TOP EL. VEGETATIVE FILTER STRIP
1 491.25' 492.25' NTS
2 507.25' 508.25'
LEVEL SPREADER SECTION VIEW
NTS
SEAL ~111HI~~~~111f// SEAL
~ CqR Ali ' BRIAR CHAPEL DATE: JUNE 17, 20,1 SCALE M&C FILE NUMBER
~ ~E ION ~ .
® ~~Q 9. BRIAR CHAPEL PARK AY MCE PROJ. # 02735-0072 cc5o2 DRAWN GCA HORIZONTAL: oRav~NC NUMBER
Qnf I' n~~ ®nl{~I~ nQiee~ ~YT~t~iC!(1I~iC DESIGNED GCA 1" - 20
;fej ~ILAL _
0 28419 = 1730 Varsity Drive, Suite 500 -7~XC H KCHAPEC V V V LV LI ® I V 11 V 1 V I NI V L- 1_/\ I LI i %.jI V 1 14 CHECKED CHS VERTICAL: U-V
Raleigh, North Carolina 27606 L { PROJ. MGR. GML NA
•.FNGINEER.. 0\~, Phone: [phone], Fax: [phone] SUBMITTAL TO CHATHAM COUNTY EROSION CONTROLNWO 401 UNIT 2011.06.22 - LEVEL SPREADER/VEGETATED STATUS: iaE~sc® um-nEs FILTER STRIP DETAILS ISSUED FOR PERMITTING ]:j
1 SUBMITTAL F-1222 by TO NCDOT 2011.06.17 IVI, LI V `\11\ !lrmnu1111~
REV.NO. DESCRIPTIONS DATE
REVISIONS www.mckimcreed.com Newland c® llTdI1