NCC221489_Site Plan or Location Map_20220418

B2 INLET PROTECTION (TYP.) I
I
JUNCTION 84
RIM:331.0 NDS 9"x9"
INV.329.0 SQUARE CATCH
BASIN WITH I
AREA 7: 2,800 SF ATRIUM GRATE OR I
-APPROVED EQUAL
B1 RIM: 343.5 PLUNGE POOL INV.-341.5 RESIDENTIAL I
PIPE INV: 328.5 1 ' I 1 5 CONSTRUCTION
B7 ENTRANCE
Q / M-d I Js I I I i I JUNCTION,
8" HDbE i i I 1''S , ;"° 1 ♦' I I I� i RIM:348.5��t-+-!-L�--�1-r--b1-i�-r
INV. 345.5 _ i -_ ti i . i _% I TEMPORARY 12"
B5 DIAMETER WATTLE
-II
_I I 1 I r
NDS 9"" x9SQUARE CATCH
r1S I I I I I I I I I I 1
SILT FENCE' I ' i 3�g , I i i BASIN WITH ATRIUM GRATE OR
OUTLET (TYP.) i T 1 I - - - - - - - - - - - - - - - I I �� I APPROVED EQUAL I ' 1 ' 1 II
1 I I I I= I 1 1 1 1 RIM:351.5 I 1 0
DOUBLE SILT! it " 1 ' i i i 1 ml ' I / i INV: 349.5 i 1
FENCE
B6
B3 I I I NDS 6I"x6" SQUARE CATCH BASIN
IrI 11^lI iI i NDS 6x6" SQUARE
CATCH BASIN WITH
1
1 I1 Ii1 I
1i
WITH FLAT GRATE OR APPROVED 349 11
EQUAL � FLAT GRATE OR g
I
CONCRETE WASHOUTAPPROVED EQUAL
RIM:337.5 AND SIGN
INV:335.5 00 RIM:348.5
m INV: 346.5
I
w
AREA 6: 5,200 SF
I1-iI i�i -I I I ' SILT FENCE``a
-I- - - - - - - - - - - / I ,t o1 w
TD-2
+0
II
_ _ _ 1+010 TEMPORARY RUT 6" DEEP DURING ' I ' z a.
' I I I ' Li "a �' - ' I I I i ' EROSION CONTROL PHASE TO , I 1 I w
I ' I AREA 5: 5,700 SF I I I ' I I ' DIRECT FLOW ACROSS DRIVEWAY CDI
TO TEMPORARY I DIVERSION DITCH ' ' ' ` ' ' i ! AREA 1: 11,000 SF
I ! I I I I I 1 i I I I y
1 I I I I I I I I I it
I I I
A3 I I I I I I I I I 1 I I I I t I
I I "
I I NDS 6 x6 SQUARE CATCH BASIN I I I i i I I I I II 1 1 1 1 1
1 I WITH FLAT GRATE OR APPROVED I'
I I I 1 / 1 I I I I I I I I 1 o I I I I I I I I 1 j1_ I-
I I EQUAL I I I � I / 1 L } I �. I- -r-II I T I I r� l AREA 2: 2,000 SF
I RIM: 337.5 n
1 I I INV:335.5 - --i-�-►-i ' w iiii
- - - - - - -
I I I I I 1 I 1 3ti9 I I � I I I o' I I I I I I I
TD-1 I '
I I i
-I - I I I I I I I it
1 I AREA 4: 4,900 SF! I- 1 1 T-
I 1 I
F?so i I I I I I I I
16" H PE I I I I I I I
I I I I I I I I I , IIII I I I A9 - SET 6 OUTSIDE OF EDGE OF TRAVEL
TD-3 I I I IM IIII 1 i i-04 NDS 12"x12" SQUARE CATCH BASIN WITH
AREA 3: I I I h I I I I I 1
l l l FLAT GRATE OR APPROVED EQUAL CONNECT
4,600 SF. I I ® FRENCH DRAIN TO CATCH BASIN
D L ID * I �IOD �- L I L0 I LOp t L t I I I I I I I
I RIM: 363.2
\ \\ \\ \ Al�- a- - - �p I ' J� I IN V: 361.2
\ \\ \ \\ PLUNGE POOL �\ �� \ II I, i\ i I i ; I I i i I F I r I t' II t t 1 oI li , Al i i i II
\ ,n
PIPE INV. 329.0 \ A4 `\ \\ \ `\ ` A5 >, I I A6 I I I I I I I II JUNCTION \\\\`\ ` I IRIM:
.364.I0
I I I III I I 1 In
I / IA10NDS 6 6 SQUARE CATCH JUNCTION NDS 18 x18 SQUARE CATCH INV362.0
A2 BASIN WITH FLAT GRATE OR RIM: 347.5 BASIN WITH FLAT GRATE OR VR NDS 12%12" SQUARE CATCH BASIN WITH
INV: 345.5 APPROVED EQUAL ATRIUM GRATE OR APPROVED EQUALAPPROVED EQUALji
JUNCTION RIM: 336.0 RIM: 348.2 RIM: 373.0
RIM: 330.5 I INV: 371.0INV: 334.0 INV: 346.2 IA8 - SET 6" OUTSIDE OF EDGE OF TRAVEL
\ \ \ \ \ \ INV: 328.8 i " NDS 9 x9,1 SQUARE CATCH BASIN WITH
\ \ I \ \ \ \ \ \ \ t \ 1 t
I FLAT GRATE OR APPROVED EQUAL.
CONNECT FRENCH DRAIN TO CATCH BASIN
RIM:361.5
IN V: 359.5
` ` \ \ \ \ \ \ \ ` \ \ \ ` 1 j
\� `\ `� `\ \\ \ \\ \\ \\ \\ \ \\ \\ \\ \\ \ \\ \ \ \\ \ \\ '\\ \\ \\ \ \\\ `\ \\\ `\ \ \ ,t Il t I 1� It ,1 , I ,1 i I i i i i I I I fill
i i I ' i I
A7 - SET 6" OUTSIDE OF EDGE OF TRAVEL
NDS 9 x��9 "
\ \ \ I I I I I SQUARE CATCH BASIN WITH FLAT
`1 GRATE OR APPROVED EQUAL
I
\ \ \ � 1 1 t , \ t 1 1 1 I I I I i I� I i i � RIM:360.8
I 1 I I I 1
ifi 'I � II II '1 tt INV: 358. 8
Ill
1 \ \ \ \ \ \ \ \ \ \ • � � � \ ` \ � � \ ` \ \ \ 1 , 1 1 t t 1 I I I I I II tl I '� 'I '� I `, 1 1 l I I I I I I III I I I I I 11 I
I I i
\` \ \\ �\ �� \ �\ \\ ♦\ �\ \ `\ ��\ `�\ �� \ �� �\ ♦\ ♦\ \ \\ `\ \ \\ \\ \ \` \` \ \\ \ \ \ \ \ \\ \\ \\ \ \\ \\ \l \ \ \\ `\ \ \ \ \ \ \ \\11 t'I I 1 I I I I I I I I I I I I I lip
\ \ ♦ I\� \ \\ \\ \\ \\ \ `�\ ��\ �\ `�\ \ \ `�\ ��\ `�\ �\ \ \\ \\ \`\ \ \ \` \` \\ \\ \ \ \\ `\ \\ \\ \ \ \ \ \ \ \ \ \ \ \ \\ `\ \ \\ I\\ \\ \\ I I I I I I I I I I I 1 1 1 1 1 1 1 111 1 '
♦ \ \ \ . `. \ `. `. \ \ \, \ \. `. \ \ \ ', ' \ \ \. \. \ \. \. \, \ 11 It 1 1 1 IIII 1 I 1 I
I It,111„� I,1
DRAINAGE SWALE SCHEDULE
Approx.
Cross -Section
Bottom
Drainage
2-Year Rainfall
10-Year Rainfall
Swale Liner
Left Bottom Right Min.
Flow Flow Shear
Flow Flow Shear
Installed
Swale
Length
Side
Width Side
Depth
Slope
Area
Runoff
Q2
Depth
Velocity
Stress
O10
Depth
Velocity
Stress
Ser\Ace
Width*
Swale
Designation
(ft)
(X1)
(ft) (X1)
(ft)
N
(ac.)
C-Value
(cfs)
(ft)
(fps)
(psf)
(cfs)
(ft)
(fps)
(psf)
Specification*
Duration
(ft)
Designation
TD - 1
35
2
-- 2
1.0
1.00
0.05
0.50
0.13
0.22
1.34
0.14
0.17
0.28
1.07
0.18
Grass Only
Permanent
--
TD - 1
TD - 2
100
2
-- 2
1.0
20.00
0.25
0.50
0.73
0.24
6.29
3.02
0.93
0.30
5.04
3.80
6" Rock Rip Rap
Permanent
4.0
TD - 2
TD - 3
40
2
-- 2
1.0
1.00
0.11
0.50
0.31
0.31
1.65
0.19
0.39
0.39
1.32
0.24
BioNet S75BN
Permanent
6.7
TD - 3
*Notes:
1. Liner products specified abo\,e are manufactured by Tensar North American Green. Similar products may be substituted with Engineer's approval
2. Install all products per manufacturer's recommendations. Where a permanent liner is specified, install liner prior to initial seeding.
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CONTACT INFORMATION: LEGEND:
LIMIT OF DISTURBANCE/CLEARING LIMITS LDD LDD
OWNER / FINANCIALLY RESPONSIBLE PARTY: SILT FENCE -SF-SF-SF
MINDY HUANG EXISTING CONTOUR ---
GLENN GLADE -LOT 812 PROPOSED CONTOUR
CHAPEL HILL, NC 27517 TREE PROTECTION FENCE TPF TPF
TEMPORARY DIVERSION DITCH >>>
ENGINEER:
ANDREW JONES, P.E. SILT FENCE OUTLET
CIVIL CONSULTANTS, INC.
3708 LYCKAN PARKWAY, SUITE 201 CATCH BASIN/YARD INLET PROTECTION
DURHAM, NC 27707
b-b
[phone] WATTLE
SITE INFORMATION: RESIDENTIAL CONSTRUCTION ENTRANCE
COUNTY ZONING: RESIDENTIAL DISTRICT-1
PARCEL AREA: 0.89 ACRES MATTING
DISTURBED AREA: 0.69 ACRES (29,800 SF)
BOULDER WALL
LL
a
CONSTRUCTION SEQUENCE:
1. SUBMIT A LAND DISTURBING PERMIT TEMPORARY DRIVEWAY RUT -RUTS
C
APPLICATION AT LEAST 30 DAYS PRIOR TO
ANY LAND DISTURBING ACTIVITY OCCURRING. CHECK DAM
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2. ORGANIZE PRE -CONSTRUCTION MEETING WITH CHATHAM COUNTY WATERSHED PROTECTION DEPARTMENT TO REVIEW
1.-0��
r�I
1�-1J
SITE PLAN PRIOR TO LAND DISTURBING ACTIVITIES. LAND -DISTURBING PERMIT AND APPROVED PLANS WILL BE PROVIDED
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co
AT THIS MEETING.
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3. INSTALL THE FOLLOWING TEMPORARY EROSION CONTROL MEASURES ACCORDING TO THE INFORMATION DISCUSSED
F
DURING THE PRE -CONSTRUCTION MEETING:
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3.1.INSTALL TREE PROTECTION FENCE, SILT FENCE, SILT FENCE OUTLETS, CONSTRUCTION ENTRANCE, WATTLES, AND
O I�
CONCRETE WASHOUT.
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3.2.INSTALL ALL STORM DRAIN PIPES, STRUCTURES AND DISSIPATER PADS EXCEPT A3, A9, B3, AND B5.
3.3.INSTALL INLET PROTECTION, DRIVEWAY RUT, AND TEMPORARY DIVERSION DITCHES WITH THE STABILIZATION LINERS
0
AND CHECK DAMS.
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MINIMAL CLEARING MAY OCCUR IN THE IMMEDIATE AREA OF ALL MEASURES TO PROVIDE FOR INSTALLATION.
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4. CONTACT CHATHAM COUNTY WATERSHED PROTECTION DEPARTMENT STAFF TO SCHEDULE AN INSPECTION OF ALL
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INSTALLED MEASURES. PERMITTED LAND DISTURBING ACTIVITIES MAY BEGIN ONCE MEASURES ARE INSTALLED AND
APPROVED.
5. COMPLETE SITE CLEARING AND GRUBBING. INSTALL THE FOLLOWING TEMPORARY EROSION CONTROL MEASURES:
5.1. COMPLETE ROUGH GRADING AND FOUNDATION. INSTALL THE REMAINING PIPE INFRASTRUCTURE SHOWN WITH INLET
PROTECTION.
5.2.FOLLOWING ROOF INSTALLATION, CONNECT GUTTERS TO ROOF DRAIN PIPING.
6. COMPLETE SELF -INSPECTIONS WEEKLY AND WITHIN 24 HOURS OR A 0.5"OR GREATER RAINFALL EVENT.
7. MAINTAIN ALL EROSION AND SEDIMENT CONTROL MEASURES IN GOOD WORKING ORDER. SILT FENCE, INLET PROTECTION
AND OTHER SIMILAR MEASURES MUST BE CLEANED OUT WHEN THEY ARE HALF FULL. CLOGGED SILT FENCE OUTLETS MUST
BE REFRESHED/REPLACED. SILT FENCE CANNOT HAVE HOLES OR TEARS.
8. GROUND COVER SHALL BE PROVIDED AS FOLLOWS:
8.2.STABILIZE BASINS WITH GROUND COVER IMMEDIATELY AFTER INSTALLATION. (IF APPLICABLE)
8.3.STABILIZE DIVERSION DITCHES INTENDED TO BE IN SERVICE FOR (14) DAYS OR MORE WITH TEMPORARY SEEDING AND
EROSION CONTROL MATTING. (IF APPLICABLE)
8.4.FOR ALL AREAS OF MODERATE AND/OR STEEP SLOPES, STABILIZE AREA WITH SEED AND MATTING IF THE SLOPE
HAS NOT BEEN DISTURBED FOR A PERIOD OF (7) DAYS.
8.5.PROVIDE GROUND COVER SUFFICIENT TO RESTRAIN EROSION ON ANY PORTION OF THE SITE UPON WHICH FURTHER
LAND -DISTURBING ACTIVITY IS NOT BEING UNDERTAKEN WITHIN (14) CALENDAR DAYS OF TEMPORARILY OR
PERMANENTLY SUSPENDING LAND DISTURBING ACTIVITY.
8.6.ESTABLISH PERMANENT GROUND COVER SUFFICIENT TO RESTRAIN EROSION IMMEDIATELY FOLLOWING COMPLETION OF
CONSTRUCTION OR DEVELOPMENT AND/OR PRIOR TO FINAL INSPECTION.
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9. RE -INSTALL ADEQUATE EROSION AND SEDIMENT CONTROL MEASURES AND/OR INCREASE MAINTENANCE FREQUENCY
2
WHERE APPROVED MEASURES FAIL TO PREVENT ACCELERATED EROSION, OFF -SITE SEDIMENTATION, OR REPETITIVE
U
0
NON-COMPLIANCE ISSUES.
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10. MEASURES MUST BE INSTALLED AT THE BACK OF CURB TO RESTRICT ALL VEHICLE ACCESS TO THE CONSTRUCTION
ENTRANCE. ALL MEASURES MUST BE INSTALLED ACCORDING TO THE APPROVED PLAN UNLESS APPROVED IN THE FIELD BY
CHATHAM COUNTY WATERSHED PROTECTION DEPARTMENT STAFF (APPROVED FIELD REVISION).LU
0
11. MODIFICATIONS TO THE APPROVED AND PERMITTED PLANS SHALL BE APPROVED, BY CHATHAM COUNTY WATERSHED
PROTECTION DEPARTMENT STAFF ONLY, PRIOR TO REMOVAL OR INSTALLATION. CONTACT CHATHAM COUNTY WATERSHED
PROTECTION DEPARTMENT STAFF TO REQUEST AN INSPECTION AND OBTAIN A SIGN -OFF ON THE PLANS OR AN APPROVED
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FIELD REVISION.
DATE:
FEBRUARY 21, 2022
12. ONCE GRADING AND CONSTRUCTION ACTIVITIES ARE COMPLETE, TEMPORARY MEASURES ARE REMOVED, AND THE SITE
IS STABILIZED CALL CHATHAM COUNTY WATERSHED PROTECTION DIVISION STAFF TO SCHEDULE THE FINAL INSPECTION.
THIS
ARE THE
DRAWING AND THE DESIGN HEREON
PROPERTY OF CIVIL CONSULTANTS,
INC. THE
INFORMATION ON THIS DRAWING IS
13. ONCE THE FINAL INSPECTION IS COMPLETE THE PERMIT WILL BE CLOSED AND NO ADDITIONAL GROUND DISTURBING
NOT FOR USE ON ANY OTHER SITE OR PROJECT.
THE REPRODUCTION OR OTHER USE OF THIS
ACTIVITIES CAN OCCUR
DRAWING
WRITTEN
IN WHOLE OR IN PART, WITHOUT
CONSENT OF CIVIL CONSULTANTS, INC.,
IS PROHIBITED.
COPYRIGHT 2021 CIVIL CONSULTANTS, INC.
Know what's below.
Call before you dig.
(Or call: 1-800-632-4949)
SHEET NO.
GRAPHIC SCALE
20 0 10 20 40
C2
IN FM
i inch = 20 ft
Z:\Shared Fold ers\Proj ects\Corona \280 26\DWG\280 26. dwg, C2 EROSION CONTROL PLAN, 3/2/2022 3:23:04 PM