HomeMy WebLinkAboutWPO202000021 Plan - E&S Erosion Control Plan 2020-05-18NORTH
STATE SOUTH GRID
NAD-83
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GENERAL CONSTRUCTION NOTES:
1.) PRIOR TO ANY CONSTRUCTION WITHIN ANY EXISTING PUBLIC RIGHT-OF-WAY, INCLUDING CONNECTION TO ANY170
EXISTING ROAD, A PERMIT SHALL BE OBTAINED FROM THE VIRGINIA DEPARTMENT OF TRANSPORTATION (VDOT). THIS o
PLAN AS DRAWN MAY NOT ACCURATELY REFLECT THE REQUIREMENTS OF THE PERMIT. WHERE ANY DISCREPANCIES
OCCUR THE REQUIREMENTS OF THE PERMIT SHALL GOVERN.
2). ALL MATERIALS AND CONSTRUCTION METHODS SHALL CONFORM TO CURRENT SPECIFICATIONS AND STANDARDS OF �o
VDOT UNLESS OTHERWISE NOTED.
3.) EROSION AND SILTATION CONTROL MEASURES SHALL BE PROVIDED IN ACCORDANCE WITH THE APPROVED EROSION �� o0
CONTROL PLAN AND SHALL BE INSTALLED PRIOR TO ANY CLEARING, GRADING OR OTHER CONSTRUCTION. �� oo'
,moo
4.) ALL SLOPES AND DISTURBED AREAS ARE TO BE FERTILIZED, SEEDED AND MULCHED. moo°
5.) THE MAXIMUM ALLOWABLE SLOPE IS 2:1 (HORIZONTAL:VERTICAL). WHERE REASONABLY OBTAINABLE, LESSER
SLOPES OF 3:1 OR BETTER ARE TO BE ACHIEVED.
6.) PAVED, RIP -RAP OR STABILIZATION MAT LINED DITCH MAY BE REQUIRED WHEN IN THE OPINION OF THE COUNTY
ENGINEER, OR DESIGNEE, IT IS DEEMED NECESSARY IN ORDER TO STABILIZE A DRAINAGE CHANNEL.
7.) ALL TRAFFIC CONTROL SIGNS SHALL CONFORM WITH THE VIRGINIA MANUAL FOR UNIFORM TRAFFIC CONTROL
DEVICES.
8.) UNLESS OTHERWISE NOTED ALL CONCRETE PIPE SHALL BE REINFORCED CONCRETE PIPE - CLASS III.
9.) ALL EXCAVATION FOR UNDERGROUND PIPE INSTALLATION MUST COMPLY WITH OSHA STANDARDS FOR THE
CONSTRUCTION INDUSTRY (29 CFR PART 1926).
o i
PLAN
1 " = 30'
TERVAL = 2'
NOTES:
1.) SURVEY PREPARED FOR: DAVID C. WEYHER AND USA C. WHITE
2.) HORIZONTAL DATUM: NAD-83 VIRGINIA SOUTH ZONE
3.) VERTICAL DATUM: NAVD-88
4.) UNLESS OTHERWISE NOTED TOPOGRAPHIC SURVEY SHOWN HEREON WAS COMPILIED BY
VIRGINIA RESOURCE AND PROVIDED BY ROUDABUSH AND GALE ASSOCIATES, INC. TOPOGRAPHY
WITHIN THE LIMITS OF DISTURBANCE WAS FIELD RAN BY THIS FIRM ON JANUARY 14, 2020.
5.) NO UNDERGROUND INVESTIGATION OF UTILITIES WAS PERFORMED. THE CONTRACTOR SHALL
DETERMINE THE EXACT LOCATION OF ALL EXISTING UTILITIES BEFORE COMMENCING WORK. THE
CONTRACTOR AGREES TO BE FULLY RESPONSIBLE FOR ANY AND ALL DAMAGES WHICH MIGHT BE
OCCASIONED BY HIS OR HER FAILURE TO EXACTLY LOCATE AND PRESERVE ANY AND ALL
UNDERGROUND UTILITIES.
6.) THE STREAM BUFFER SHOWN HEREON SHALL BE MANAGED IN ACCORDANCE WITH THE
ALBEMARLE COUNTY WATER PROTECTION ORDINANCE.
7.) SITE LIES WITHIN FLOOD ZONE "X"; NOT A F.E.M.A. DEFINED 100-YEAR FLOOD PLAIN.
8.) PROPERTY MAY BE SUBJECT TO ADDITIONAL RESTRICTIONS OF RECORD.
9.) ALL EROSION AND SEDIMENT CONTROL MEASURES SHALL BE INSTALLED IN ACCORDANCE
WITH THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK. CONTRACTOR SHALL BE
RESPONSIBLE FOR ALL PERMITS, IMPLEMENTATION, AND MAINTENANCE OF ALL EROSION AND
SEDIMENT CONTROL MEASURES SHOWN HEREON. SEE SHEET 3 OF 4 FOR NARRATIVE.
10.) DRAINAGE ANALYSIS PROVIDED BY ALAN G. FRANKLIN, PROJECT BUNDORAN LOT 2B DATED
3/27/2020 AND ATTACHED HERETO. SEE SHEET 4.00
11.) TOTAL LIMITS OF DISTURBANCE SHOWN HEREON = 0.92 ACRES. DISTURBANCE WITHIN
STREAM BUFFER = 11,218 S.F. REQUIRED MITIGATION = 22,436 S.F. RESTORATION UNITS = 56
(SEE RIPARIAN BUFFERS GUIDANCE MANUAL, CHAPTER 5.1 "BUFFER ESTABLISHMENT,
REPLACEMENT AND RESTORATION", TABLE B).
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DAVID C. WEYHER AND LISA C. WHITE
D.B. 5262, PG. 208
D.B. 3486, PG. 87, 97 (PLAT)
31.545 ACRES
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920
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DETAIL
SUNRISE - SETSET
SCALE: 1" = 40'
TREE SCHEDULE
TREE NO.
SIZE
TYPE
484
22"
TULIP POPLAR
485
19"
TULIP POPLAR
486
17"
TULIP POPLAR
487
14"
TULIP POPLAR
488
20"
TULIP POPLAR
489
27"
TULIP POPLAR
490
13"
TULIP POPLAR
491
30"
TULIP POPLAR
492
21"
TULIP POPLAR
493
12"
TULIP POPLAR
494
13"
TULIP POPLAR
495
11"
TULIP POPLAR
496
24"
TULIP POPLAR
497
18"
OAK
498
28"
OAK
499
8"
OAK
500
9"
HICKORY
501
35"
RED OAK
502
28"
RED OAK
503
8"
HICKORY
504
28"
TULIP POPLAR
505
27"
TULIP POPLAR
506
16"
TULIP POPLAR
507
29"
TULIP POPLAR
508
11"
HICKORY
509
19"
MAPLE
510
11"
MAPLE
511
8"
MAPLE
512
8"
MAPLE
513
9"
HICKORY
514
9"
GUM
515
20"
TULIP POPLAR
516
17"
TULIP POPLAR
517
25"
MAPLE
518
9"
HICKORY
519
9"
GUM
520
18"
TULIP POPLAR
521
11"
GUM
522
15"
MAPLE
523
18"
MAPLE
524
12"
HICKORY
TREE NO.
SIZE
TYPE
525
17"
TULIP POPLAR
526
13"
MAPLE
527
15"
RED OAK
528
26"
WHITE OAK
529
16"
MAPLE
530
15"
MAPLE
531
17"
TULIP POPLAR
532
15"
MAPLE
533
20"
MAPLE
534
10"
TULIP POPLAR
538
18"
HICKORY
539
8"
HICKORY
540
9"
HICKORY
541
18"
HICKORY
542
21"
OAK
543
15"
GUM
544
21"
TULIP POPLAR
545
18"
TULIP POPLAR
546
36"
RED OAK
547
27"
TULIP POPLAR
548
8"
TULIP POPLAR
549
8"
TULIP POPLAR
550
9"
HICKORY
551
21"
MAPLE
552
12"
TULIP POPLAR
553
18"
TULIP POPLAR
554
14"
TULIP POPLAR
555
8"
HICKORY
556
8"
MAPLE
557
23"
HICKORY
558
10"
HICKORY
559
8"
HICKORY
560
14"
OAK
561
28"
TULIP POPLAR
562
24"
HICKORY
563
10"
MAPLE
564
17"
MAPLE
565
9"
HICKORY
566
18"
TULIP POPLAR
567
13"
TULIP POPLAR
568
13"
TULIP POPLAR
569
12"
TULIP POPLAR
502 II485 /488 /
486j
507 \ \_,Z 48 �
504503
6508
0 491
\Q20 a' 9
509jjj 510 505
ki ' I .... \\ 494
0530
\\ \J 513 499
518 497 4
522 \ ,49�\5295512 498 TREES 0 IDE-OF-
517-`---ttirvMITS6F DISTURBANCE
528\ 14 - - _ _ ARE D -BE P�ESERVED
24 16 - -Z60
l
55'1'�
55 539 527 \ 526
556 / 5 538 \ ! \ \
5� 562 4 \ \ HOME SItE \ \
/ / `` �i 566 . / \ . \ AREA .. .. .
542
544 . \\ \ y \
/554 �68. 546' / A
/ 4\� STREAM BUFFER
^�O 53 �S\0� o �� COUNTY GI$ \ \
���0 's! / 551. 547 �FFSS OFFS \
54
552
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TREE LOCATIO / / __� �7`� �`-f ���
SCALE: 1 = 50
CONTOUR IN = 2'
864o .
830 \
\ IN,
\ S
53 "
\ E 484.49'\
\ 820 -
o \ 8-10 - - -
G� � \• 110^/CgccSygNN
0
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o DISTURBED AREA=11,218 S.F.
C'.
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1
MITIGATION AREA=22 436 S.F.
890 14� ..... \ RESTORATION UNITS = 56
80 780
2 �.
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LEGEND:
SBL =SETBACK LINE 790
D.B. = DEED BOOK Soo
PG. = PAGE 810 S 140�'2'\ APPROVED
WL = PROPOSED WATER LINE 820 >>o by the Albemarle County
F.F.E. = FINISH FLOOR ELEVATION 830 790 . o
630 = EXISTING CONTOURS ELEVATION 840 d� tP�oIs O� 84 \.\ Community Development Department
630 = PROPOSED CONTOUR ��E, �o o Date 6/1/2020
630.0 _ PROPOSED SPOT ELEVATION File WP02 0 2 0 0 0 0 21
1 = DRAIN SPOUT CURVE TABLE
RLO =ROOF LEADER OUTFACE
NO. DELTA RADIUS ARC TANGENT CH. BEARING ICHORD
= TREE TO BE REMOVED C1 62'12'00" 187.48' 203.52' 113,09' S 29'51'48" E 193.68'
C2 5853'44" 494.95' 508.77' 279.44' S 31'30'58" E 486.67'
KIRK HQUGHES
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ASSOCIATES
LAND SURVEYORS AND PLANNERS
220 EAST HIGH STREET
CHARLOTTESVILLE, VA. 22902
(804) 296-6942
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FILE NO.:
2020-011
DWG. NO.:
1BUNDORAN FARMILOT_B2\2020011-01.DWG
of
G. V. " HUGHES 9
1JC. NO. 1458
511612020
l4ND SUR0�04
DATE: JANUARY 14, 2020
REVISED: MARCH 31, 2020
APRIL 27, 2020
MAY 18, 2020
SCALE:
HORIZONTAL 1" =100'
CONTOUR INTERVAL = 5'
SHEET TITLE:
SITE
PLAN
SHEET NO.:
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TOP=783.75' �784.03' TOP=782.75'
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VPI STA = 10+83.
--------- ----
g1 = -9.09%
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CURVE LEN = 50.00.
INV IN=779.00' 20' - 42" RCP INV OUT=778.00'
g2 =-11.70
KIRK HUGHES
ASSOCIATES
LAND SURVEYORS AND PLANNERS
220 EAST HIGH STREET
CHARLOTTESVILLE, VA. 22902
816 (804) 296-6942
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FILE NO.:
2020-011
DWG. NO.:
16UNDORAN FARMILOT 62�2020011-01.DWG
NORTH
STATE SOUTH GRID
NAD-83
fr- It DATE: JANUARY 14, 2020
REVISED: MARCH 31, 2020
APRIL 27, 2020
-- MAY 18, 2020
SCALE: HORIZONTAL: V = 20'
VERTICAL:1" = 20'
CONTOUR INTERVAL = 2'
SHEET TITLE:
PLAN AND
PROFILE
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SHEET NO.:
2.00
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NOTES'
FLOW
1
/
820
818
816 \�� O z d LOO/
\ \ \ EROSION AND SEDIMENT CONTROL NARRATIVE
CLOD j / \ \ \ \ I \ ALL EROSION AND SEDIMENT CONTROL MEASURES SHALL BE INSTALLED IN ACCORDANCE WITH THE KIRK H U G H E S
too I \ VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK. CONTRACTOR SHALL BE RESPONSIBLE FOR ALL Q
PERMITS, IMPLEMENTATION, AND MAINTENANCE OF ALL EROSION AND SEDIMENT CONTROL MEASURES a
SHOWN HEREON. ASSOCIATES
CONTROLS UTILIZED: LAND SURVEYORS AND PLANNERS
1.) CONSTRUCTION ENTRANCE (CE) - 1.) TO BE INSTALLED APPROXIMATELY 1,673 FEET NORTH OF 220 EAST HIGH STREET
- goo/ DERRY LANE ON BALLYSHANNON LANE. ENTRANCE TO BE AT A MINIMUM OF 70 FEET IN LENGTH AND CHARLOTTESVILLE, VA. 22902
814 I \ SHALL BE INSTALLED AS PER SPECIFICATIONS OUTLINED IN 3.02 OF SAID HANDBOOK.
/ - 804 296-6942
2. SILTFENCE SF -
INSTALL AS SHOWN ON EROSION AND SEDIMENT CONTROL PLANS. ADDITIONAL
I
\
- FENCING Y REQUIRED NECESSARY BY F F T ENC NG MAY BE E U RED IF SO DEEMED ECESS R 6 HE COUNTY 0 ALBEMARLE FENCE 0
o Q
/ I
a12 0 \
/
1 / \ /
/
BE INSTALLED AS PER SPECIFICATIONS OUTLINED IN 3.05 OF SAID HANDBOOK.
/s- 3. CULVERT INLET PROTECTION CIP INSTALL AS SHOWN ON EROSION AND SEDIMENT CONTRO
L
/
I
PLANS. T T RSPECIFICATIONST N
1 LA S. 0 BE INS INSTALLED AS PER OU LINED I 3.08 OF SAID HANDBOOK.
T DIVERSION T Y P T / I 4. STREAM DI ERS ON DD STREAMED 0 BE DIVERTED B MEANS OF PUMPING DURING HE
9 I
A
2
/ /
1 \
INSTALLATION OF THE CULVERT AND HEADWALL. INSTALLATION FOLLOWED IMMEDIATELY WITH IN
LET AND
a
O \
/ / I
L T T I T P SPECIFICATIONS I
7
oD OUTLET PROTECTION. DITCHES TO BE INSTALLED AS PER SPECIE CAT ONS OUTLINED N 3.12 OF SAID
.. '`•$:• .fib),.:;:• ' v::•:.v::• ' "
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/
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PROTECTION TO BE INSTALLED AS PER SPECIFICATIONS OUTLINED IN 3.18 OF SAID HANDBOOK.
MINE
REMAIN UNDISTURBED FOR MORE THAN 30 DAYS. SEEDING TO BE INSTALLED AS PER SPECIFICATIONS
OUTLINED IN 3.31 OF SAID HANDBOOK.
7.) PERMANENT SEEDING (PS) - SEEDING SHALL BE APPLIED WITHIN 7 DAYS TO AREAS INDICATED
°s' • i � � ���• _ ��� � � � � > � '.n,'l��j � !ll�il! �.� " r�.• ''"" ,�♦ ��� ,>� `�'' -HEREON.ADDITIONAL 1 1 DEEMED NECESSARY BY THE COUNTYOF VIRGINIA. SEEDING1
r I o BE I AS PER ' 1 OUTLINED IN 3.32 OF SAID HANDBOOK.
3
b 8. MULCHING MU -MULCH COMPRISED OF PLANT RESIDUES STRAW PREFERABLY OR OTHER A
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SUITABLE MATERIALS SHOULD BE APPLIED TO PROMOTE PLA GROWTH AND REDUCE THE RISK OF
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5 0 ,���_����`��'• � �-• SOIL EROSION. MULCH TO BE INSTALLED AS PER SPECIFICATIONS OUTLINED IN 3.35 OF SAID
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9. DUSTCONTROL DC NECESSARY DUST CONTROL OPERATIONS SHALL BE ADMINISTERED N A
s.
0 0� I e
��•N T CONTROL THE AIRBORNE MOVEMENT F SEDIMENT A PSPECIFICATIONSIN
1
I
MANOR 0 CO OL E BO NE OVEME 0 SEDIME S PER OUTLINED
H
I
3.39 OF SAID HANDBOOK.
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CONTROL INSTALLATION SEQUENCE:
UEN CE: O
1
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1
.�; A.) INSTALL CONSTRUCTION ENTRANCE AT LOCATION AS SHOWN ON PLANS.
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s- 6. INSTALL SILT FENCING.
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C.) INSTALL STREAM DIVERSION, STORM CULVERT END WALLS ALONG WITH CULVERT INLET PROTECTI
ON
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L� o cc
AND OUTLETPROTECTION. T -
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F V T � I \ D. CONTACTCOUNTY 0 ALBEMARLE FOR INSPECTION AND APPROVAL OF CONTROL MEASURES
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9NG �
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I
E. COMMENCE CONSTRUCTION 0F BUILDING PAD AND DRIVEWAY AS SHOWN HEREON WHIL
E m
MAINTAINING AND MONITORING EROSION CONTROL MEASURES. Q
F.) UPON FINAL SITE GRADING APPLY PERMANENT SEEDING ON ALL DISTURBED SLOPES AND AREAS
Lb \�y� \ TO BE GRASSED. U \ \do
i
288 UU
786
1992 3.05
CONSTRUCTION OF A SILT FENCE
(WITH WIRE SUPPORT)
1. SET POSTS AND EXCAVATE A 4"X4" 2. STAPLE WIRE FENCING TO THE POSTS.
TRENCH UPSLOPE ALONG THE LINE
OF POSTS.
I 11
r cj
FLOW -I IIIII
4"
3. ATTACH THE FILTER FABRIC TO THE WIRE 4. BACKFILL AND COMPACT THE
FENCE AND EXTEND IT INTO THE TRENCH. EXCAVATED SOIL.
FLOW
i
EXTENSION OF FABRIC AND WIRE INTO THE TRENCH.
0 0;
o \ RESERVED DRAT \ I I°� s�� °'`- \
\ NFIELDIce
\
TREES OUTSIDE OFF
THE LIMITS � I 1 � •\
v OF DISTURBgE
\ ARE TO BE PRESERVED \ I I \
V v I l
Albemarle County Design Standards Manual - Engineering 0
STONE -70' MEN.
CONSTRUCTION
ACCESS /- 3' SM-2A ASPHALT TOP
/ COURSE EXISTING
2i ,!I 2$ vPAVEMFNT
a MN 2'A At REGAL- EASE
PROFILE
STONE 70' MIN.
CONSTRUCTION ASPHALT PAVED
ACCESS A WASHRACK
EXISTING
2% y 2% PAVEMENT
2% 12' MIN.*
1
I POSITIVE 0RA1NAGE
-MUST EXTEND FULL WIDTH `---� TO SEDIMENT
OF INGRESS AND EGRESS OPERATION. TRAPPING DEVICE
PLAN
12' MIN. POSITNE DRANAGE
2% TO SEDIMENT
TRAPPING DEVICE
FILTER CLOTH
SECTION A -A
A llilllllllllln IIG'atel tap of 1 inch must be installed mith a nnllnllllluln 1 'inch bancoclk
shutoff vah-e glppj) inz a WaAl hose FNith a &.1111eter of 1. C ulcim., for adequate
cL�ustust prey ln'e. wash watel' nm. t be evxiecl awa} Tarsal the ellhaLlee to all
aI?l)l Ol'ecl settlil area t0 re11141'e secliilellt. All sedl iient shall be prevented flo111
C1ltefiI clraim (latches oT WateIcoluses.
PAVED WASH RACK
Page 8 of 23
Source: Adapted from Installation of Straw and Fabric Filter
Barriers for Sediment Control, Sherwood and Wyant Plate 3.05-1
LEGEND:
SBL = SETBACK LINE D.B. = DEED BOOK CE = 3.02 CONSTRUCTION ENTRANCE
E&S = EROSION AND SEDIMENT PG. = PAGE
x 630 = PROPOSED ELEVATIONS IRF = IRON ROD FOUND SF = 3.05 SILT FENCE
630 = EXISTING ELEVATIONS F.F.E. = FINISH FLOOR ELEVATION CIP = 3.08 CULVERT INLET PROTECTION
LOD = LIMITS OF DISTURBANCE
1992 3.36
TYPICAL TREATMENT- 2
SOIL STABILIZATION MATTING
SLOPE INSTALLATION
FILL SLOPE SECTIONS 9
SOIL STABILIZATION MATS SHOULD
O i NOTE: SLOPE SURFACE
BE INSTALLED VERTICALLY g.
DOWNSLOPE FOR BEST RESULTS. Q SHALL BE SMOOTH
p 7 AND FREE OF
� Q ROCKS, LUMPS OF
i DIRT, GRASS AND
STICKS. MAT SHALL
BE PLACED FLAT
Q ON SURFACE FOR
PROPER SOIL
CONTACT.
Q a
.1, A; �svv 4'
iR 2'
Q DIRT SHALL BE
rua' r TAMPERED PRIOR
- TO LAYING TOP
LAP OVER
IF
TOE BERM
MAINTAIN SLOPE ANGLE TRENCH INTO BERM AND
PROGRESS DOWNSLOPE
SLOPE LINING SLOPE LINING TOP CUT SLOPE
(WET SLOPE) :., : DRY SLOPE)
TREATMENT - 2
POLYPROPELYENE 2
NON -WOVEN
(NEEDLE PUNCHED) CL C� TREATMENT - 2
GEOTEXTILE FILTER �LtFRO� SO pRi3Af1ERi
CLOTH (BEHIND
TREATMENT - 2)
SOIL :��' BOTTOM OF FILL SLOPE
BOTTOM OF CUT SLOPE
BOTTOM OF CUT SLOPE 4'ORERR SHOULDER
BAK POINT
Source: VDOT Road and Bridge Standards Plate 3.36-5
1992 3.02
STONE CONSTRUCTION ENTRANCE
70' MIN. EXISTING
PAVEMENT
A .3'
r 5:1
FILTER CLOTH___1
MIN. p MOUNTABLE BERM
(OPTIONAL)
SIDE ELEVATION
EXISTING GROUND
70' MIN.
B WASHRACK 10' MIN.
(OPTIONAL) �-
10' MIN.
1.2' MIN. �-- EXISTING
PAVEMENT
II
VDDT 61 I POSITIVE DRAINAGE 10' MIN.
COURSE AGGREGATE B TO SEDIMENT
I TRAPPING DEVICE
• MUST EXTEND FULL WIDTH
AND EGRESS PLAN VIEW
OOF PERATION
12' MIN.
Y
Y MIN.
3� MIN.
FILTER CLOTH SECTION A -A
REINFORCED CONCRETE DRAIN SPACE
SECTION B-B
Source: Adapted from 1983 Maryland Standards for Soil Plate 3.02-1
Erosion and Sediment Control, and Va. DSWC
1992 3.08
CULVERT INLET SEDIMENT TRAP
CLASS I RIP RAP
RIPRAP
HEADWALL
\` PIPE
F
I
+ I I 1 J VDOT#3, If�DR p15
SEDIM ENT S7DRAW ARZA 5 ll COARSE AGGREGATE
"STORAGE REQUIREMENTS EQUIVALENT
TO THAT OF TEMPORARY SEDIMENT
TRAP, STD. & SPEC. 3,13
67 O.Y./ACRE WET STORAGE
PERSPECTIVE VIEW
(BELOW @ASE OF STONE)
67 C.Y./ACRE DRY STORAGE
(BASE OF STONE TO TOP
OF STONE BERM) PIPE INVERT NATURAL GROUND
RIPRAP HEADWALL,
I
I l l
AREAS TO 13E DISTURBED
(CUT, RULED. ETC.)
---------------
4 W
------------------
CLASS I RIPRAP
VDOT #3, #357, OR #,9 COARSE AGGREGATE
MAX. SEDIMENT DEPTH (CLEAN OUT POINT)
AT 1/2 VOLUME OF WET STORAGE AREA
ELEVATION
Source: North Carolina Sediment Control Commission Plate 3.08-2
1"2 3.18
PIPE OUTLET CONDITIONS
A A
ad6 _.-
------------- -
�
d D
------------- -
PIPE OUTLET TO FLAT
AREA WITH NO DEFINED
CHANNEL
PLAN VIEW
0 L a
d
SECTION A_A FILTER CLOTH KEY IN W-B": RECOMMENDED FOR ENTIRE PERIMETER
I
A
A ado (MIN.)
d ,
0 a-
------
PIPE OUTLET TO WELL
DEFINED CHANNEL
PLAN VIEW
L a
0 %
S d
SECTION A -A 7-
FILTER CLOTH M IN 8"-9": RECOMMENDED FOR ENTIRE PERIMETER
NOTES: 1. APRON LINING MAY BE RIPRAP, GROUTED RIPRAP, GABION
BASKET. OR CONCRETE.
2. La IS THE LENGTH OF THE RIPRAP APRON AS CALCULATED
USING PLATES 3.15-3 AND 3,18•-4.
3. d = 1.5 TIMES THE MAXIMUM STONE DIAMETER, BUT NOT
LESS THAN 6 INCHES.
Source.: Va. DSWC Plate 3.18-1
rr
J
Q
!W^
V J
0
Z
w
J
LU
Q
U)
FILE NO.:
2020-011
DWG. NO•:
16UNDORAN FARMILOT32\202001I-01.DWG
NORTH
STATE SOUTH GRID
NAD-83
DATE: JANUARY 14, 2020
REVISED: MARCH 31, 2020
APRIL 27, 2020
MAY 18, 2020
SCALE:
HORIZONTAL:1" = 20'
CONTOUR INTERVAL = 2'
SHEET TITLE:
EROSION CONTROL
PLAN
SHEET NO.:
3.00
1HSGB 0
0 1 1
(OV RLAN LOW)
200' W22°ram
�` • % f DFiNNAGG�F AREA
6h°6 -- /' C =� 19 21 11I f r
=5. 9,5 FSTWTH-
-
r
-77.
SHA LB'u°dt-CC]NCEATED)
'4- \i�\, -1()00-
\ ,� �, 111� � i''` �' � � �`1 � � � H§i�A '
ii I 11 -- �1000
�
� ,, �, � � / / � i,r ,� � ` .� � � �- � ,, � � } �4 �\ \�\°�� LET V ,.-•- .� ,,� -- � � � � `\ �"
�. . � �- goo
' ;,� _ --BUILDING
111/�/�l1SITE
Z7��
f
NA
1 SCALE: 1" 200"
I �
HSG A - ,' 1 / /�ByILDIN�
ITE
SOILS
`V DIVIDE, TYP �� ��.� s t I / l ` \ OPOSEa
42"�QULVERT 1
go-
-
620 f--` `\ YY \ \
\ \ \
RATIONAL METHOD WORKSHEET Project: Bundoran Lot 2B
Watershed ID: 48" Culvert Date: 3127/2020
Drainage Area: 42.00 Acres Designer: AGF
c-factor: 0.27 (see worksheet)
tc: 19.21 mins. (see worksheet)
0
(2): 34.48 cfs
Q(10): 45.95 cfs
0(100): 61.16
Time of Concentration Worksheet
Mile ighted c-facto r M rksheet
5
Cover Type
Area
c
Source: Seelye Chart as modified in VDOT Drainage Manual (Fig.
Impervious Areas
0.50
0.90
1.5.1.1 on Page 1-13E)
Dewtoped Open AaWa awn
3.50
0.40
Notes:
Undeveloped Woodland
38.00
025
1) Length of overlend flow alvmys r= 2W If
2) Calculate a separate Tc for each ground
cover condetion along the flowpefh
-
c-factor =
0.27
200.00 Enter Length of Strip (R)
Sample "C" values:
22.00 Enter Slope (% or ftf100ft)
0 22 Dense grass
-r
0.22 Enter Rational Method "C" value
0.28 Average Bass
0.36 Poor grass
J op
12.62 Result Tc (minutes)
0.48 Bare soil
�j'
yfT j�
0.90 Pavement
r
Shallow Concentrated Flow Time 1
��
Source: SCS Velocity Graph as publisher! in Virginia Erosion and
��
Sediment Control Handbook, Third Edition (Plate 55-2 on Page V-12)
Notes:
Alan G. Franklin
1) Not intended for keg defined channels - see channel flow calculation
2) Calculate a separate Tc for each ground cover condition alrntg the flowpaM
Lic. No, 35326
930.00
30.00
Enter Length of Flow (R)
Enter Slope (4b or ft1100ft)
o �,5 r.� f� �0
!
1.87
Result Tc (minutes) IF UNPAVED
��y�
1.42
Result Tc (minutes) IF PAVED
SI
Channel Flow Time
ON A L
Source: Kirpich Chart as modified in VDOT Drainage Manual (Fig. 1.5.1.2 on Page 1-14)
Notes:
1) Forsmall drainage basins.
2) Farconcrete channels, use 027c
975 00 Enter Length of Flow (ft)
t3200 Enter Height of most remote point along flow path above outlet
4.71 ResultTo(minutes)
Rainfall Intensity (Albemarle County, Virginia)
Return
Duratio
Intensi
Period
(minx.]
(nlhr)
2
19.2
3.0
t0 19.2
4.0
100 19.2
5.4
Accapfable values
for duration are beA een 5
Culvert Report
Use values outside this range at risk.
}+A ratoww Expreee Ex"mlon for Autudw" AvtoCALO CIA 300 by Autodaek. Inc.
Tuesday, Uay 12 2020
Bundoran Lot 2B
42 Inch 1I 10-yr Storm Event
Invert Elev Dn (ft)
= 778.00
Calculations
Pipe Length (ft)
= 20.00
Qmin (cis)
= 45,95
Slope (%)
= 5.00
Amax (cfs)
= 45.95
Invert Elev Up (ft)
= 779.00
Tallwater Elev (ft)
= (dc+DV2
Rise (in)
= 42.0
Shape
= Circular
Highlighted
Span (in)
= 42.0
Ototal (cfs)
= 45.96
No. Barrels
= 1
Qpipe (cfs)
= 45.95
n-Value
= 0.012
Covertop (cfs)
= 0.00
Culvert Type
= Circular Concrete
Voice Dn (ftfs)
= 5.56
Culvert Entrance
= Square edge wlheadwall (C)
Voice Up (ft/8)
= 7.57
Cooff. K,M,c,Y,k
= 0,0098, 2, 0,0398, 0.67, 0.5
HGL Dn (ft)
= 780.81
HGL Up (ft)
= 781.11
Embankment
Hw Elev (ft)
= 782.14
Top Elevation (ft)
= 784.33
Hw/D1(ft)
= 0.90
Top Width (ft)
= 12.00
Flow Regime
= Inlet Control
Crest Width (ft)
= 50.00
_ eunEdentat" a M HD"t WrI-I- rx e,r:�iel
MM==M==_M®��_
_ �.r.ra�tl•i!i �_��
u
KIRK HUGHES
ASSOCIATES
LAND SURVEYORS AND PLANNERS
220 EAST HIGH STREET
CHARLOTTESVILLE, VA. 22902
(804) 296-6942
z
Q
O
Q
z
Z)
co
FILE NO.:
�,
•
2020-011
DWG. NO.:
1BUNDORAN FARMILOT_B2\2020011-01.DWG
DATE: JANUARY 14, 2020
REVISED: MARCH 31, 2020
APRIL 27, 2020
MAY 18, 2020
SCALE:
HORIZONTAL 1" = 200'
SHEET TITLE:
DRAINAGE
ANALYSIS
SHEET NO.:
4.00