HomeMy WebLinkAboutWPO201900068 Plan - VSMP 2021-02-17RED HILL ELEMENTARY SCHOOL
PHASE 2 GYM ADDITION AND RENOVATION
SITE DATA:
ENGINEER: TIMMONS GROUP
608 PRESTON AVENUE, SUITE 200
CHARLOTTESVILLE, VA22902
TELEPHONE: 434-327-1688
CONTACT: CRAIG KOTARSKI, P.E.
CRAIG. KOTARSKI@TIM MONS.COM
TAX MAP PARCEL: 08700-00-00-06100
LIMITS OF DISTURBANCE: 1.31 AC
ZONING: RA
SETBACK: 75'FRONT
25' SIDE
35' REAR
MAGISTERIAL DISTRICT: SAMUEL MILLER
SOURCE TOPOGRAPHY: TIMMONS GROUP. OCT 2019
DATUM: HORIZONTAL: NAD83 VIRGINIA STATE GRID SOUTH ZONE
VERTICAL: NAVD88 ESTABLISHED THROUGH LEICA
SMARTNET
BUILDING HEIGHT: 29'-6" (ADDITION)
BUILDING AREA: 8,710 SF (BASE BID)
9,650 SF (ALTERNATE CONFIGURATION)
PROPOSED USES: GYM ADDITION AND ASSOCIATED SITE WORK
NEW IMPERVIOUS AREA (WITHIN PROJECT LIMITS): 0.25 ACRES
REQUIRED PARKING: PER SEC. 4.12.6 - MINIMUM NUMBER OF PARKING SPACES FOR
SCHEDULED USES, THE NUMBER OF REQUIRED SPACES SHALL
BE DETERMINED BY THE ZONING ADMINISTRATOR.
PARKING COUNT: PRE -DEVELOPMENT TOTAL: 67 SPACES (4 ADA SPACES)
POST -DEVELOPMENT TOTAL: 75 SPACES (4 ADA SPACES)
ADA PARKING REQUIRED: 3 SPACES (AT LEAST 1 VAN SPACE)
ADA PARKING PROVIDED: 4 SPACES (1 VAN SPACE)
WETLAND IMPACTS: NONE
WATER SUPPLY: ACSA
SANITARY SEWER: EXISTING ONSITE DRAINFIELD
DRAINAGE DISTRICT: NORTH FORK HARDWARE RIVER
THERE ARE NO CRITICAL SLOPES LOCATED WITHIN THE PROJECT LIMITS.
THERE ARE NO CONSTRUCTION ACTIVITIES PROPOSED WITHIN THE 100-YR FLOODPLAIN.
THE SITE IS NOT LOCATED IN A WATER SUPPLY PROTECTION DISTRICT.
AVERAGE DAILY TRAFFIC = 754 TRIPS
THE PURPOSE OF THIS AMENDMENT IS TO EXPAND THE LIMITS OF
DISTURBANCE SLIGHTLY AROUND SOME NECESSARY IMPROVEMENTS
LIST OF REVISIONS MADE WITH THIS AMENDMENT:
DITCH IMPROVEMENT
SEPTIC LINES
PATIO CIRCLES
TREE REMOVAL
VRRM.XLS UPDATE
VSMP PLAN
WP0201900068 -AMENDMENT #1
COUNTY OF ALBEMARLE, VIRGINIA
SAMUEL MILLER DISTRICT
02/17/2021
696 I
4ac
S,gC c�
eo9a `g°
901 y,61�Ch roe
Ppc qy
Monacan Trail Rd
110
4
rII yo
/6e
rtt PROJECT \
LOCATION
c
Pippin Hill Farm
& Vineyards
Ajan� Hd
t
697 8
frD9 iS0
1?�
P�
Fy\�`
VICINITY MAP
SCALE 111:2000'
OWNER:
ALBEMARLE COUNTY SCHOOL BOARD
401 MCINTIRE RD
CHARLOTTESVILLE, VA 22902
CONTACT: JOE LETTERI
TELEPHONE: (434) 975-9340
FAX: (434) 975-9341
ENGINEER OF RECORD:
TIMMONS GROUP
608 PRESTON AVE. SUITE 200,
CHARLOTTESVILLE, VA 22903
CONTACT: CRAIG KOTARSKI, P.E.
TELEPHONE: 434-327-1688
APPROVED
by the Albemarle County
Community Development Department
Date 03/24/2021
File WP02019000681 Amendment #1
Sheet List Table
Sheet Number
Sheet Title
C0.0
COVER
C0.1
PHASING PLAN
C1.0
NOTES AND DETAILS
C1.1
NOTES AND DETAILS
C2.0
EXISTING CONDITIONS
C2.1
DEMOLITION PLAN
C3.0
EROSION & SEDIMENT CONTROL NOTES & DETAILS
C3.1
EROSION & SEDIMENT CONTROL NOTES & DETAILS
C3.2
EROSION & SEDIMENT CONTROL PLAN - PHASE I
C3.3
EROSION & SEDIMENT CONTROL PLAN - PHASE II
C4.0
LAYOUT AND UTILITY PLAN
C5.0
GRADING AND DRAINAGE PLAN
C5.1
GRADING SPOT SHOTS PLAN
C5.2
STORMWATER SUMMARY PLAN
C6.0
STORMWATER MANAGEMENT PLAN
C7.0
STORMWATER PROFILES
G8.2
SEWAGE DISPeSAI. SITE PLAN
G8.3
SEWAGE E)lspeSAI. SYSTEM DETAILS
L1.0
LANDSCAPE PLAN
L2.0
LANDSCAPE NOTES AND DETAILS
SITE PLAN PI IeTeMETRIGS
TOTAL SHEETS = 18
SIGNATURE PANEL:
APPROVAL
DEPARTMENT OF COMMUNITY DEVELOPMENT
PLANNING & ZONING
ENGINEERING
INSPECTIONS
ARCHITECTURAL REVIEW BOARD
DEPARTMENT OF FIRE AND RESCUE
ALBEMARLE COUNTY SERVICE AUTHORITY
VIRGINIA DEPARTMENT OF TRANSPORTATION
HEALTH DEPARTMENT
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PROJECT NO: 593801
DATE:
NOVEMBER25,2019
REVISIONS
DATE
DESCRIPTION
03/09/20
BID/PERMIT SET
04/13/20
CONFORMING SET
6-24-20
COUNTY COMMENTS
7-24-20
SIGNATURE SET
2-22-21
WPOAMENDMENT
COVER
Como
APPROX. LOCATION OF 4"
D.I. WATERLINE
\ \ \ I 1 \ \ COMPILED PROPERTY LINE PID:087BO-00-00-01200
MCLAUGHLIN LIVING TRUST
30' PRESCRIPTIVE VDOT W.ZONE.
RA 1
R.O.EASEMENT VDOT
CHAN
OUTL
WIDTH
BROWffSTON LEVEL S \\ \\ \ 1N0 I WIDTH
SPREADER 26WIDT)-I; - - - �- LENG
DOWNSTREAM GRADE FLUSH - - - - _ j1 I \ 112 DEPT
ANITH TOP OF V11ALL.
TOP OF WALL ELEV T 711.39'01
SEE DETAIJCON SHEET C6A1 ' 1p I 1 �h
S01L TYYPE:/ / 06 - _ I 1^h
A h SF SAF��
17
699 1pp ,1p� , 1 ,'' �' / /' r' „ / � T / BM _ � 110
/ _
69N 69h /696
IP OP
BM -' SAF
TP
ZZ
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— _ l
{'.
/ — r
/ T / ' PS
\ ''.. '•'•'.... :.;�' �::. PCE
C®MPIL�D P.R6PERI)`LiN �
ry..'
/ / / / PS MU y OHP724,/
/ / / / / BM f IP
'P1p�08700-q0-00-060A0/
0OUNTY OFALBEMARL,E
SCHOOL BOARD 72
Z(JNE- RA l / / /
508, PG. 503 / / / a / N PS \\ 725
2.88 AC
NN
cl
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I / OAP L
/ I I �TOTA / ^� /' NCO f�L LIMITS` OF DISTUR NCE = SF-
/ I I DISTURBANC - 1.29 AC. / ' / �s 1.29 AC. �-
Ap
PS
SAF CONC
NAP
/ /' 6' (W) DBL. DOOR
// • P TECT/SEPTIC O _ , FFE=72Z28'
/ ON\P / / / / / , ' / / / /COVERS / 3'(w)DoOR ` PS
'SEPTIC U FFE=72718' MU
RS/ O `
3' (W) DOOR
FFE 72728'
PID:08700-00-00-06WO
/C`OUNTYOFALBE/MARLE
SCHOOL BOARD
'RED HILL ELEM SCHOOL"
DB. 504, PG. 343 h
4/55 AC / / , / ' / 11' 1
14"D0UECE DEC. / TOTAL LIMITS,6F DISTU / / / / / 3'(W)DOOR
i PS+ , .. , FFE=72722'
1.2,�AO.
L/ , FFE=72723' 6' (W) DBL. DOOR
PROTECT SEPTIC / / /' SEPTIC / / FFE=72720'
COVEN / ' CQVER�
FFE=7DOOR 6' (W) DBL. DOOR
FFE=72724'
3'(W)DOOR EQUIPMENT
N 1�1 / Ir // PS i
FFE=72523' ENCLOSURE
1 6' (W) DBL. DOOR 6' (W) DBL. DOOR
3' (W) DOOR FFE=72521' FFE=72729'
FFE=725.24'
i
\ i 3' (W) DOOR / / 3' (W) DOOR
SANITARY DF ✓UN'CTION \ a, t FFE=725.24' / FFE=72727'
1 I / RLAGGED BY OTrIERS (TYP ' s' (W) DBL. DOOR <
FFE=725.23' I _ 3' (W) DOOR
SF FFE=72722'
1 1 1 1 I I I I I 1 3' (W) DOOR
1 1 1 \ I I 1 �t23.20' \
3' (W) DOOR I I I I 3' (W) DOOR O�\0.
FFE=723.20' 6' (W) DBL. DOOR FFE=72q.23' - G
I I FFE=72526' I ��IIq 0
\YP E \ I I 14"MAPLE `c
\ \ \ 1 I I I \ t CO I'
WOODEN
PLAYHOUSE x� i
SF 1 LEVEL
N 1 I I ^ O CINDER BLOCK FACILITY ,Ix
TOTA4 LIMITS OF /.: FFE= DOOR 'REDHILL ELEMENTARY / 1/
oDISTURBANCE _ - SCHOOL" 1 I I
SAF \ PS ` 3'(W)DOOR + a TOTAL LIMITS OF
FFE=72526'
\ \ \ DISTURBANCE _
yy ` I
\ 24"DEC. TRE� l \ 3'(W)DOOR _ I1.29AC.
\ \ \ \ \ 1 I 1 1 / � I \ ` I 1 l l PLAYGROUND FFE=72521'
\ 1 \ ' • ° •. l l AREA
\ \ \ ` \ 1 \ \ I 1 1 I ` ` \ �' °•/ ,. N i��. - 3'(W)DOOR 3'(W)DOOR I __
r' FFE=725.25' _
\ \ \ 1 1 1 I 1 I \ I I \ \ •f, / ^ r\ FFE=725.24' \. I SHED
It
\ \ \ \ \ \ \ \ I \ 1 1 \ L. o — — ' _ CHAINLINK
\ \ \ \18"Pk I 1 \ \ 11 lyo \ \ \/, ` ...\ CONC. I CONC. — =X- X— I I
\ \ \ 1 /NV=\713.3Q' 1 \ \ p 1 I \
PLAYGROUND
AREA
\ \ \ \ ® \ II
18"DEC. TREE \ x
\ \ 1 \ \ \ 1 \ \ \ 8`(PVCxl�
EP
T \ �X, _ \ _ ` o - o CURB
�76- \ \ \ \ I `- - - CH_ALNL/NKFENCE6c(y)
I \ \ \ 1 \ 1 \ \ \ \ \ \ \ - \ X� �` - \ BASKE ALL SHECK
720 _ ' �� X� \ \ GOAL YP)PRESERVED C r
\ _
__XT --- CRITICAL SLOPES /
- 719
\ 7 (TYPICAL)
-718 _ _-
EROSION CONTROL LEGEND
I LIMITS OF CLEARING AND GRADING
CLASS Al ' ■ m o m m m m m m■ DRAINAGE DIVIDE
NEL RIPRAP I I SOIL AREA DIVIDE
ET PROTECTION. '
1 = 3.75' , SAF —SAF— SAFETY FENCE 3.01
H2=6' i
TH=8'
H = 18" PID: 087BO-00-00-01000 I PCE PAVED CONSTRUCTION ENTRANCE 3.02
MCLAUGHLIN LIVING i
TRUST C/O DANIEL H SF ter— SILT FENCE 3.05
\ MCLAUGHLIN & TERESE N
MCLAUGHLIN
ZONE: RA IP INLET PROTECTION 3.07
\ 0.91 AC
DD �� DIVERSION DIKE 3.09
APPROX. LOCATIONOF4"
' D.L WATERLINE / RWD �� RIGHT OF WAY DIVERSION DIKE 3.11
' REDH/(L
' (RO TE CO z Ral0 /� ' = ` \ O ST SEDIMENT TRAP 3.13
OP \ 725 - _0 \ OP OUTLET PROTECTION 3.18
ON p/ 15' PRESCRIPTIVE VDOT'� _ V�ATER
' \ O TS TEMPORARY SEEDING 3.31
' R.O. W EASEMENT , — �� VALVE (3
CIP \EP — rt PS PERMANENT SEEDING 3.32
/ \ O
MULCHING 3.35
O
TP TREE PROTECTION FENCE 3.38
/ — 725 30"OAK _ _
` 6"DOGWOOD ` 26 —
DUST CONTROL 3.39
_ _-------' 30"OAK _ �('+�^'ii,, \
726 s'�`.,"2 — — — _ — — — — �rt5 !' �\ \ ^ \ /� BM AREAS STEEPER THAN 3:1 TO BE 3.36
STABILIZED WITH STABILIZATION
_ 24:.OAK- — — ' pis 8"DOGWOOD \ `I `\ I BLANKET
TO AL LIMITS I �\ Q l/ �c RE
DISURBANC = 1.29AC. \/1/ / / / * "VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK" SPECIFICATION NUMBER
/ _ _
/ 12"MAPLE _
\\\\ FLAGPOLE i —/ )
\ \ I \ co
1
\ I 4"- 6" DOGWOOD(2)
/ \ 15SEi
N 2HC SpgCEs 14"PINE %c NCP
CANOPY
CONC. I ABANDONED \ 14'GATE
FUEL PUM
CG ;SOIL TYPE : CONC. (CAPPED)P /
41B ---- /
/ I \
4"X4"STEEL _-'
COLUMNtS-(Ti'r
/\l 1'STEPPED \
r CANOPY BRICK WALL
�� \\
o0l V W / \
J\
METAL \ Q / ' ° SD INLET W/GRATE
1� STAIRS / / MAf LE 4 TOP=726.35'
INV OUT= 722.35' 12" RCP (SW)
LSA I _
SD INLET W/GRATE
k',, ,' y ' TOP=723.16'
IN = 720.95' 12"RCP (NE)
'� - \ INV OUT = 720.64' 15" RCP (SW)
'-, 510", BLOCKWALL
DONc t4'I(H) TOTAL LIMITS 0
DISTURBANCE x
NCE _ / \ - / _ 728 - - I
1.29AC.
/ I 10"BLOCKWALL 1\ I /1�9 SDMH
t5'(H) , TOP=725.79'
' INV IN= 720.16' 8" PVC (NW)
UR CONC s / I , / / _ INV 1N=720.17' 15" RCP (NE)
B H� I INV OUT= 720.01' 15" RCP (SE)
\ 1 I r
C --727
� \ V 3 I
TEMPORARY TRAILER ' ` 726 — —/ I
l I Ix o PID: 08700-00-00-06400
TO BE PROVIDED BY I / W ✓AMES F. POWELL, JR.
OWNERSHIP / I I I W ZONE: RA
DB. 2246, PG. 461
I
\ I x x
II �'
I
SDMH
�uao TOP= 724.21'
INV 1N=719.36' 15" RCP (NW)
INV OUT= 719.28' 15" RCP (SE)
/
\� Is CON
Ep ,
SHEDK - a 14"DEC. TREE SD CURB INLET 00
\\ \ - - - - TOP= 722.26' 0
INV OUT= 718.25' 15" CMP (SE) z
4 18: DEC. TREE
SCALE 1 "=20'
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PROJECT NO: 593801
DATE: NOVEMBER
25, 2019
REVISIONS
DATE DESCRIPTION
03/09/20
BID/PERMIT SET
04/13/20
CONFORMING SET
6-24-20
COUNTY COMMENTS
7-24-20
SIGNATURE SET
2-19-21
WPO AMENDMENT
EROSION & SEDIMENT
CONTROL PLAN - PHASE II
C3,3
APPROX. LOCATION OF 4"
D.I. WATERLINE ,
COMPILED PROPERTY LINE PID: 087BO-00-00-01200 ,
MCLAUGHLIN LIVING TRUST
30'PRESCRIPTIVEVDOT ZONE. RA
' VDOTCLASS AI
R.O. W. EASEMENT
BROWNSTONE
-EXISTING ROADSIDE
CHADITCHA--__ NNEL RIPRAP
��03 DETAIL) OUTLET PROTECTION.HEET C6
I WIDTH 1 = 3.75'
BROWffSTON L£T/E _ \ \ ,1
RADE CFI TO BE 1' DEEP WITH 3:1 WIDTH 2 = 6'
SPREADER WIDT ANNE�-
DOWNSTREAM GDE FLUSH- - - - - ' - I I E PROVIDE h8" EPTH OF VDOT LENGTH = 8'
RA / � r +�
M/ITH yOP OF/ WALL. / ' - - - - , �TANDAR LA ROWNSTONE RIPRAP DEPTH = 18"
1 0 I --9N WOVEI E TILE FABRTO-_
PID: 087BO-00-00-01000
MCLAUGHLIN LIVING
TRUST C/O DANIEL H
I NOTES:
1. UNLESS OTHERWISE SPECIFIED, ALL
I FOUNDATION DRAINS SHALL BE 4" PERFORATED
PVC PIPE. FOUNDATION DRAINS SHALL TIE TO
' THE NEAREST STORMWATER CONVEYANCE PIPE
I ACCORDINGLY.
12. ALL ROOF DRAINS SHALL HAVE A MINIMUM
I INVERT OF 2.5' OUT OF THE BUILDING AND DRAIN
AT A MINIMUM 1% SLOPE TO THEIR TIE IN POINT
AND MINIMUM 2' OF COVER.
TOP/uF WALL ELEV p 711.39 1 p 1 9 - -
/ 0 - - RBC ED BELOW FI HE DE. -_-� \ MCLAUGHLIN& TERESEN
SEE DETAIZ ON SHEET CT.1 , , 1
/ / � I (SEE IRIPRAP TAIL S�E -L - MCLAUGHLIN
/ I --_
_ _ / ^1 -- \ ZONE: RA I
203 — — I I \/1\ ' , \ _ 0.91AC I
200
1 7jZZ I APPROX. LOCATION OF4" /
6 y9/— /
\ , , / / / / / , 16 _ _ / \ , OL WATERLINE /
18
OOL RO - - I
202 ' 'azuq i 12 ROP
1LZ - _ 102-__- \ ON 15'PRESCRIPTIVE VDO1�--o l�4TER
~1)G / , - _ , ' - \ R.O. W EASEMENTS_ VALVE (3
zzzz; _ _ _ - PID.087B00000010A0
UGT 101 ' 103 - \ -L \EP _ COUNTY OF ALBEMARLE
Q9PILi5D PPROP�R.T�Lly / , - ' , ' - - r 2 ' • ,' / --__ i SC ZONE RA
HOOL ARD
, / Off / 1 / _ _ _ \ DB. 706, PG. 497
P
75-
I VDEEP WIT
7-/ // / / / ; . t � O , %Z4 J REGRADE
SLOPE. PROVIDE018EDEPTH OF VDOT1
72 � �� ,"' � / �ANDARDCLASSAIBROWNSTON€RIPRAP �_
/ AN -NON- EN-GEOTEXTILE FABRIC _ _ - ` \ i
/Plp: 9 08700- 0-00-06OA01 I / / _ G 726 - - - Q
/ / 214 RECESS ELOW FINISHED GRAD \ \
COUNTY 06ALBEMARL,E
/ I / G / / v ^ -\ ) (SEE RIPRAP ANNEL9ETAIL SHEET ) \ \ \ I o
SCHOOL BOARD l / / \) / / ^ / \ / 212
Z6NE- RA l / / a / \ / 7 x
D /508, PG. 503 I / l / 1N ' " 14 25 r / CONTRACTOR TO RE -GRADE ALONG EDGE I �\ / O
2.88 AC l / // / / / / N I / / / / / OF ASPHALT, CREATING SHOULDER I I^ 1 /' \ � /
ROOF DRAIN / / 13 /' DRAINING DOWN TO RIPRAP CHANNEL Q I
/ CONNECTION , / / \ h 217 _-
IE Rj,00F DRAIN IKROM ADD A / \\216
\ \ I
ADDITION T04TORM PIPE 223 I CLEANOUT (TYP.) ROOF DRAIN CONNECT QX - \ \ I $ \ o� / / kl
/ \
ROOF DRAIN
A / / 223 CONNECTION
ti i o SE7B , l
ti� CLEANOU�(TYP.)
1 // /229 ry 2HCSPICES
// '\ 4" SOLID PVC TO TIE TO
I ^� NP // ' ' \ FOUNDATION DRAIN.
\ us
226 14'GATE
1^0 // NA?/ // / ' 1^ / / / / / / 224 // 1/ 230• �.' \� � _°\ ' / / / / CG N
I
6'(W)DBL. DOOR
�,, / / / / / FFE=72728' — l�i9
ON\P / / / / Sits' / / , / / / / / / / / / / O O I — 3' (W) DOOR I 4"X 4" STEEL _ 00
SEPTIC U FFE=72718' COLUMNS-(Ti'r
COVERS/
(4)
I 3' (W) DOOR
PID:08700-00-00-06WO / / 1bp / / / / I / 4- a FFE=72728 / 1 \
/C`OUNTY OFALBE/MARLE.. / /
SCHOOL BOARD/ / / / / / / I REFER TO MEP PLAN / l 1' STEPPED
'RED HILL ELEM SCHOOL" / / / / / / / �D LI I / \ 3
BRICK WALL
/ / / / % !1/ IIT FOR DRAINAGE AND / /
DB. 504/ PG. 343 / , / / / , / h � SANITARY SEWER
4/55AC INSIDE COURTYARD
AND UNDER BUILDING
/ /' '/ // // // / 3'(W)DOOR
f
FFE=72722'
3'(W)DOOR
FFE=72723' 6' (W) DBL. DOOR / I
SEPT
LIC FFE=72720'0.
/ : _- -
COVER$ 11111=11 l l /
3' (W) DOOR 6/ METAL I ° SO INLET W/GRATE
' (W) DBL. DOOR \ � I /
FFE=72524' FFE=727.24' K STAIRS / / 1 Q TOP=726.35'
IN r I I I / / / \j / ' ///O / / `. �� INV OUT= 722.35' 12" RCP (SW)
:. r' . 3' (W) DOOR
FFE=72523'AN
a 1 ! l I
6' (lN) DBL. DOOR 6' (W) DBL. DOOR
ry' (W) DOOR FFE=72521' FFE=72729'
;•..d. — 3
FFE=725.24'
3'(W)DOOR , 3'(W)DOOR
\ 1 1 I I I I SANITARY DF. JU CTION BOX, \ a, FFE=725.24' 6' W DBL. DOOR / FFE=72727'
FFE=725.23'
FLAGGED BY OT�IERS (TYP) 1 SD INLET W/GRATE
_ 3' (W) DOOR
FFE=72722' / / C l TOP=723.16'
11 3' (W) DOOR _ _ /-5-� \ I _ — _ _ _ I INV IN = 720.95' 12"RCP (NE)
FFE=723.20' INV OUT = 720.64' 15" RCP (SW)
10"BLOCK WALL
1 \ 1 I I o 3' (W) DOOR 3' (W) DOOR ±4'I(H)
I I I FFE=723.20' FFE=725.23'
' .i DOOR
%,72$
FFE=72526
/
/
vv 0 �� / \ l I 10"BL CKWALL S' I /x /1�9 SDMH
u ) TOP= 725.79'
WOODEN �X �'/ INV IN= 720.168" PVC (NW)
i \ PLAYHOUSE lNV OUT= 720.01' 15"RCP (SE)
\ \ \ ^ n 1 1 LEVEL INV 1N=720.17' 15" RCP (NE)
N I CINDER BLOCK FACILITY Ilk PC \ I I
\ \ ^ FFE=OOR 71REDHILL ELEMENTARY '
FE719.24'
SCHOOL" �o 1 /i/ C . \ - - 727
3' (W) DOOR o I \ 3 I 2
FFE=72526'
O DOOR I \ ' PID: 08700-00-00-06400
3'W I `726--
FFE=725.21' I \ / I I/ ✓AMES F. POWELL, JR.
I I I ZONE RA
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PROJECT NO: 593801
DATE: NOVEMBER
25, 2019
REVISIONS
DATE DESCRIPTION
03/09/20
BID/PERMIT SET
04/13/20
CONFORMING SET
6-24-20
COUNTY COMMENTS
7-24-20
SIGNATURE SET
2-19-21
WPO AMENDMENT
GRADING AND DRAINAGE
PLAN
0 20' 40'
C5,0
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PRE -DEVELOPED CONDITION 11,I'1111,11
*LEVEL SPREADER TIMBER LENGTH (L) CALCULATIONS
DRAINAGE AREAS FROM C5.2
LEVELSPREADER
Q(10) FOR PIPE 201 = 2.00 CFS (SEE CALC BOOK FOR
CALCULATIONS)
L = 13 LF x 2.00 CFS INFLOW (10-YR STORM EVENT USED) = 13
LF X 2.00 CFS = 26.00'
MAINTENANCE NOTE: INSPECTIONS SHALL TAKE PLACE
ANNUALLY, IDEALLY DURING THE NON -GROWING SEASON.
SEDIMENTS SHOULD BE CLEANED OUT OF THE LEVEL
SPREADER FOREBAYS AND FLOW SPUTTERS.
LEVEL SPREADER DETAIL
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BOTTOM OF
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GRADE OF DEEP.
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1(10) = 6.54 IN/HR Q(10) = 0.55(0.60)(6.54) = 2.16 CFS
V(2) = 3.79 FT/S (ALLOWABLE VELOCITY = 5 FT/S)
D(10) = 0.45'
GRASS LINED
n = 0.045; S = 12.2%
DITCH A - ROAD SIDE SCC
ROAD SIDE DITCH CALCULATION
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Site Results (Water Quality Compliance(
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IN THE DEVELOPED CONDITION THE RUNOFF FROM THE DISTURBED AREA WILL FLOW OFF
AS SHEET FLOW. LEVEL SPREADERS ARE PROVIDED AT POINTS OF CONCENTRATED
DISCHARGE TO RETURN RUNOFF TO SHEET FLOW. THIS PROJECT FULFILLS THE
REQUIREMENTS OF SECTION 9VAC25-970-66 SECTION D.
WATER QUALITY CALCULATIONS:
SUMMARY FROM RUNOFF REDUCTION SPREAD SHEET FOR
REDEVELOPMENT (SEE CALC. BOOK):
DISTURBED AREA: 0.95 ACRES
PRE -DEVELOPMENT LAND COVER:
B SOILS:
01 AC WOODS
�l 6 AC TURF
0. 9 AC IMPERVIOUS
POST -DEVELOPMENT LAND COVER:
B SOILS:
AC TURF
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REQUIRED REMOVAL: 0.50 LBS/YR*
*STORMWATER QUALITY TREATMENT REQUIREMENTS TO BE MET THROUGH THE
PURCHASE OF NUTRIENT CREDITS.
r"V'� , ri of
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Lic. No. 0402048507
02/17/21 /v�
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PROJECT NO: 593801
DATE: NOVEMBER 25, 2019
REVISIONS
DATE DESCRIPTION
03/09/20
BID/PERMIT SET
04/13/20
CONFORMING SET
6-24-20
COUNTY COMMENTS
7-24-20
SIGNATURE SET
2-19-21
WPO AMENDMENT
STORMWATER
MANAGEMENT PLAN
TPWad RedudUon RegEAmdllb/W) OSO
C6,0