HomeMy WebLinkAboutWPO201900042 Plan - VSMP 2019-09-30GENERAL NOTES
OWNER.
SPRING HILL .LAND DEVELOPMENT LLC
2635 S. BENNINGTON ROAD
CHAROT7ESV/LLE, VA 22901
DEVELOPER:
STANLEY MARTIN HOMES
404 PEOPLE PLACE, SUITE 303
CHARLOTTESVILLE, VA 22911
ENGINEER:
COLLINS ENGINEERING
200 GARRETT ST, SUITE K
CHARLOTTESVILLE, VA 22902
(434)293-3719
TAX MAP NO.:
090000-00-00-02800 (DB 4571, PG.421)
1776 SCOTTSVILLE ROAD
CHARLOTTESVILLE, VA 22903
TOTAL AREA:
12.63 ACRES
ZONING. •
NMO — NEIGHBORHOOD MODEL DISTRICT
(ZMA 2013-00017 WITH ENTRANCE CORRIDOR OVERLAY (EC) & STEEP SLOPE OVERLAY)
PROPOSED USE.
RESIDENTIAL DEVELOPMENT — TOTAL 100 RESIDENTIAL LOTS
100 SINGLE FAMILY ATTACHED RESIDENTIAL UNITS (TH AND VILLA UNITS)
FUTURE COMMERCIAL BUILDING (NOT PART OF THIS PLAN)
SUBDIVISION STREETS:
CURB & GLITTER
WATERSHED:
RIVANNA RIVET,' DRAINAGE DISTRICT — NOTL • THIS SITE IS NOT LOCATED WITHIN A PUBLIC
WA TER SUPPL Y RESER VOIR WA TER HED.
S
AGRICUL TURAL/ FORESTAL DISTRICT•• :NONE
TOPO & SURVEY-
THE BOUNDARY LINE AND PARCEL INFORMATION WAS PROVIDED BY ROUDABUSH, GALE AND
ASSOCIATES IN MAY OF 2018. THE TOPOGRAPHY INFORMATION IS .BASED ON FIELD SURVEY
COLLECTED /N JUNE OF 2012 BY LINCOLN SURVEYING. THE PROPERTY IS CURRENTLY BEING
SURVEYED FOR UPDATED TOPOGRAPHY FOR THE FINAL SITE PLAN. INFORMATION HAS BEEN
FIELD VERIFIED BY COLLINS ENGINEERING IN AUGUST OF 2018.
DATUM:
NAD 83
EXISTING VEGETATION:
PARTIALLY WOODED WITH (1) RESIDENCE ON THE PROPERTY AND EXISTING
GRAVEL DRI VE. WA YS
BURIAL SITES. •
NO KNOWN CEMETERIES EXISTS ON THE PROPERTY.
STREAM BUFFERS:
THERE ARE NO WPO 100' STREAM BUFFERS ON THIS PROPERTY. ANY STREAM BUFFER
THE ALBEMARLE COUNTY WATER R PR SHALL E MANAGE IN ACCORDANCE WITH E ALBEM E OTECTION
S _L B D
ORDINANCE.
WETLANDS/STREAMS,•
THERE ARE NO WETLANDS OR STREAMS LOCATED ON THE PROPERTY.
F PLAI
FLOODPLAIN.
ON X AS SHOWN ON THE
THE PROPERTY LIES IN AN AREA DESIGNATED AS ZONE FLOOD
S
AN N 03 0407D DATED FEBRUARY 4 0 .
ATE AP COMMUNITY PANEL O 510 C 20 5 INSURANCER M ,
CRITICAL SLOPES.
SL
T PROPERTY MANAGED SLOPES ARE SHOWN N
R ARE N PRESERVED SLOPES ON HE ROPE 0
THEE E 0 ESE D
THE PROPERTY BASED tMAPPING FOR THIS PARCEL T A ON THE ALBEMARLE COUNTY GlS THESE
HET 2 A MANAGED SLOPES ARE SHOWN ON SHEET AND SHEET 4 AND SHALL BE MANAGED IN
ACCORDANCE WITH THE ALBEMARLE COUNTY ZON1 REQUIREMENTS.
ZONING
STORMWA7ER MANAGEMENT- AN UNDERGROUND DETENTION FACILITY IS PROPOSED WITH THE DEVELOPMENT TO
ACCOMMODATE THE WATER QUANTITY REQUIREMENTS FOR THE PROJECT. WATER QUALITY
SHALL ACCOMPLISHED WITH THE PURCHASE- OF NUTRIENT CREDITS ADDITIONAL MEASURES
MAY BE INSTALLED AT THE OUTFALL OF THE STORMWATER MANAGEMENT FACILITIES TO
DISSIPATE THE RUN—OFF FROM THE FAC/LI TY.
OFFSITE EASEMENT
ALL PROPOSED GRADING SHALL BE CONSTRUCTED ON SITE OR WITHIN EXISTING
N EASEMENTS ARE PROPOSED WITH THIS DEVELOPMENT. RIGHT—OF—WAY 0 OFFSITE E SEME S E PRO S
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VICINITY MAP
SCALE: 1" = 2000'
Sheet List Table
Sheet Number
Sheet Title
1
COVER SHEET
2
EXISTING CONDITIONS
3
EROSION & SEDIMENT CONTROL NOTES & NARRATIVE
4
EROSION & SEDIMENT CONTROL STANDARD DETAILS
5
PHASE I EROSION & SEDIMENT CONTROL PLAN
6
PHASE If EROSION & SEDIMENT CONTROL PLAN
7
PHASE III EROSION & SEDIMENT CONTROL PLAN
8
EROSION & SEDIMENT CONTROL PLAN DETAILS & CALCS
9
STORMWATER MANAGEMENT PLAN
10
UNDERGROUND DETENTION SYSTEM DETAILS & PROFILES
11
UNDERGROUND DETENTION SYSTEM STANDARD NOTES & DETAILS
12
DRY SWALE DETAILS & PROFILES
13
DRY SWALE STANDARD NOTES & DETAILS
14
OVERLOT GRADING PLAN
15
OVERLOT GRADING PLAN
16
SWM ACCESS AND MAINTENANCE EASEMENT PLAN
fiL
TOT
AL NUMBER OF SHEETS
anenc LEGEND
EXIS77N G CULVERT
CUL VERT
EQ
DROP INLET & S7RUC7URE NO.
CURB
CURB & GUTTER
PROPOSED PAVEMENT
EC-3A DITCH
C
DEPTH -
OF EC 3A DITCH
CH
EC-2 DITCH
d6"
DEPTH OF EC-2 DITCH
EARTH DITCH
®
DRIVEWAY CULVERT
BENCH MARK
CLEARING LIMITS
i"
— 200
EXISTING CONTOUR
PROPOSE CON TOUR
D
20o
240.55
SIGN VDOT STANDARD STOP S N
PROPOSED SPOT ELEVA77ON
APPROVED
�1
by the ;A be°� �"le ""CILIMY �gy ,,ant
Corn ,z'n '1 o ev �on');�9eni c' eaot i rt ent
DaleHe— wpo
APPROVALS
DEPARTMENT OF COMMUNITY DEVELOPMENT
PLANNERIZONING
ENGINEER
INSPECTIONS
ARB
DEPARTMENT OF FIRE RESCUE
ALBEMARLE COUNTY SERVICE AUTHORITY
VIRGINIA DEPARMENT OF TRANSPORTATION
HEALTH DEPARTMENT
D•
COLLINS ENGINEERING IS NOT RESPONSIBLE OR LIABLE FOR ANY CONSTRUCTION
OR DAMAGES TO THIS PROJECT PRIOR TO ALL FINAL PLAN APPROVALS.
TH
� SCOTT 'R. COLLINSZ
U No. 35791 2~
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SCOTT
1 N035791 BEN SCOTT R. COLLINS��
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ElTOSION & SEMIJAIENT CONTROL MEASURES. -
STRUCTURAL EFROSION AND S-EDIME.NT CONPROL PIRACTIOrS SHALL BE IN ACCORDANCE W177-1 TNIE VIRGINIA EROSION AND SEDIMENT
CONTROL HANDBOOK. S7RUC7`URAL PRA.CTICES USED IN 77HIS SE'CTION CONSIST Or THE FOLLOWING.
,LOI SAP�ETY E EL
-E-dC
A Pr'?Or4-C771VF BARRIER INSTALLED TO PREVENT ACCESS TO AN EROSION CONTYOL M1---A,1=3,!1R-F. TO PROHIBIT THE UNDESIRABLE USE OF AN
EROSION CON7ROL MEASURE BY INE PUBLIC. APPLICABLE TO ANY CONPROL MEASURE OR SERIES OF MEASURES PYN/C/-/ CAN RF CONSIDERED
UAISAFIF BY VIRTUk. OF POTENTIAL ACCESS BY 77VE PUBLIC.
3.02 ,'
� 9N,��Z&U-
CFQ&--Ei�JTRANCE.,
A STA1311-1-7-FD PAVED G01NJSIRUCT/ON �EIVIM74NCE WITH A WASH RACK LOCAM-D AT POINT5 OF WHICULAR INGRESS AND EGRESS 0114 A
CONSTYUC770H S/Tr-- TO REDUCE 7HE AMOUNT OF 11,400 77?ANSP0R7--rD ONIO PAIIED PUBLIC ROADS -BY MOTOR VEHICLES OR RUNOFF.
COIVS'fRUCIIOJ'V FEA17RAINCES SIVALL BE INSTILLED AS ,',,'PIOMJI ON 7HE' PLANS TO KDUCE THE AMOUNT Sir-E-DIM-FIVT TRANSPORPED ONTO PUBLIC
ROADWAI,IS.
3.05 SILT FENCE.
A 1EMPORARY SEDIMEENTBARRIER CON-5`1STING OF A SM7HETIC F10ER TAGRIC STRETCHED ACROSS AND ATTACHED TO SUPPOR77NG POSTS AND
ENTRENCHED, TO INTERCEPT AND DETAIN S)WALL AJWOIJN7S OF SEDIMENT FROM DIS7`URBED AREAS DURING CONS7RUC77ON OPERA 7701VS IN ORDER
TO PREVTNT SEDIMENT FROM LEA 11ING 7HE SIM-, AND TO DECREASE 7TE VELOCITY OF SHEET 1-1-OWS AND LOW-TO-MODERAJE LEIIEL CHANNE-1
FLOWS. PHE SILT FENCE BARRIERS SHALL BE INSTALLED DOWN SLOPE OF AREAS V117H MINIMAL GRADES TO FlLrER SEDIMENT LAD EN RUNOrr
FROM SHEET FLOW AS INDICAIE0. THEY SHALL OE INSPECTED INIIIIIEDIAITlY AF7ER EACH RAINFALL AND MAINTAINED IN ACCORDANCE W1rrJ TIE-
VIRGINIA EROSION & SEDIMENT CONTROL HANDBOOK (VESCH).
j._Q�4 _S
TORA11- DR
AJA _1NLr
-�-:T _ERO TEC 770t'V--
A 569111,4ENT FILI-ER OR AN EYCAVAF-5 IMPOUNDING AREA AROUND A STORM DRAIN DROP INLET OR CURB INLET TO PREVENT SEDIMENT rRom
-01'"EING STORM DRAINAGE SY-575-6111S PRIOR To PERMANENT STABILIZA770N OF THEE DIS77JRBED AREA. INLET PROTEC-1701AI APPLIES WHERE
STORY DRAIN INLETS ARE TO RE MADE OPERA170NAL Bk-r0RE PERMANENT STABILIZATION OF T"E CORRESPONDING DISR)RRED DRAINAGE AREA.
4. 08 —GULVER T JNUE1-PI?0-7-Z6!21QA:-
A SED10,11rNT FIL 7`r-R OR AN EX0,61 VA 7ED hWTIOUNDING AREA AROUND A SrORM CUL VER T 7-0 PREVENT SEDIMENT FRO&I ENTERING STORM
CUL VERTS PRIOR TO PERillIANEENT STABILMIA RON OF 1HE DISTURBED AREA. INLET PROTEC 7701V APPLIES WHERE STORM CUL IVERTS ARE EXIS7ING
OR 7'0 Of- MADE OPERA 77ONAL 86FORE PERMANENT STABILIZA 77ON OF 77-/E CORRESPONDhING DRAINAGE AREA.
3. 09 TEMP-0 ���������� - -
RAR)� I � �,
-a
A 7EVIPORARY RIDGE OF' COMPACTI'SO SOIL C01VSTRUC7TD AT THE TOP Oil? BASE OF A SLOPING DISTURBED AREA. TO DIVERT STORM RUNOFF
FROJI11 0,05SILOPE DRAINAGE AREAS A WIA Y FRO&I UNPROIECTED DIS'TURBED AREAS AND SLOPES TO A STABILIZED OUTLET TO DIVIERT
-SEDIMENT-LAVEN RUNOFF AR0,411 A U/SrUROED AREA TO A 5691MENT-TRAPPING FACILITY SUCH AS A SEDIMENT 7RAP OR SEDIMEENT BASIN. USE
WHEREVER Sf0RA11W4 7FR RUNOFF1 MUST' BE f011PORARIL Y DIVER7EV TO PROTEECT DISTURBED AREAS AND SLOPES OR RETAIN SEDIMENT ON S/TEE
DURING CONS7RUCTION. THESE STRUCTURES GENERALLY HAVE A LIFE EXPECTANCY OF 18 P401VTI-IS OR LESS, WHICH CAN BE PROLONGED 0177H
PROPER MAINMENANCE.
3.12 DIVZ'RSION.
A CHANNEL CONSTRUCTED ACROSS A 51-OPE W1174 A 55UPPORTING EAR77-11-:N RIDGE ON 7HE LOWER SIDE. TO REDUCE SLOPE LENG77H AND TO
INTERCEPT AND 011k.RT STORMPIAIER RUNOFF TO STABILIZED OU77-ETS AT NON -EROSIVE VELOG177ES. APPI-IrES WHERE RUNOFF FROJI4 AREAS OF
HIGHER ELE111-17ION MAY DAMAGE PROPERTY, CAUSE EROSION, OR IN7FRFERE MITH THE ESTABLISHMENT OF VEGETATION ON LOWER AREAS,
WHERE SURfACE AN-01OR SHALLOW SUOSURrACE FLOW P.3 DAMAGING SLOPING UPI AND, AND MI-116--RE 71-IE St OPE L-F`NG77-1 NEEDS TO BE REDUCED
TO 11,111NIMIZE SOIL LO
J 13 ME VIPORARY SEDIMENT I I&AP. �
A 7-CUPORARY PONDING AkiA FORMED BY CONSMUCTING AN EARTH-E-N L-PlIBANKMENT Wf?H A STONE OUTLET TO DETAIN SEDIMENT -LADEN
RUNOFF FROM SVIALL D15"fURBED AREAS LONG ENOUGH TO ALLOW THE MAJORITY OF INE ,'5�E-01&IENT TO SETTLE OUT USE BEZOW DIS'TURBEQ
AREAS WHERE 774E TOTAL CONTRIBUMNIG DRAINAGE' AREA IS LESS PHAN 3 ACRES, VkIERE 7HE SEDIMENT 7RAP WILL BE USED NO LONGER THAN
18 h4ONTH,'5, AND IT MAY BE CONS37RUCT50 0TIER INDEPENDENTLY OR IN CONJUNCTION WITH A 7-644PORARY DIVERSION DIKE.
J.14 TEMPORARY 2E i1QLVLBAS1At-
LIL - -- -
A rEMPORARY BARRIER OR DAM WITH A CONTROLLED STORMWAIER RELEAE,r S7RUCTURF FORMED BY CONSTRUCTING AN 6148ANKVIENT OF
COMPACTED S01-1 ACROSS A DRAINAGE -WAY TO DETAIL SEDIMENT -LADEN RUNOFF FROM DISTURBED AREAS IN "OFT" AND "DRY" S70RAGE
LONG ENOUGH FOR 7HE )VIAJORITY Or' THE` SEDIMENT TO SETTLE OUT APPLIES BELOW DIS77JRGED AREAS MHERE THE TOTAL CON7RIBUTING
DRAINAGE AREA IS EQUAL TO OR GREA rfl? IHAN 7HREE ACRES. THER-E.' iIIIUST BE SUFMICILENT SPACE AND APPROPRIA 7E TOPOGRAP14Y FOR 77-IE
CONSTRUCTION OF A TEMP'ORARY IbIPOUNOMENT
3.18 OU77-ET PROZEMOAL
S7RUC7URALLY LINTED APRONS OR OTHER ACCEPTABLE ENERGY DISSIPA7ING OEWCES PLACED AT THE OU77-ETS OF PIPES OR PAVED CHANNEL
SECTIONS. TO PREPIENT SCOUR AT STORMWATER OUTLETS, TO PROVE"OT PHE OUTLET STRUCTURE, AND TO MINIMIZEE TIE POMENTIAL rOR
DOVINS7REAM ER0,5`10N BY REDUCING T`-1E VELOCITY AND DEVERGY OF CONCLENIRATTE-D STOR&RIATT-P FLOWS. APPLICABLE TO THE OURETS OF
ALL PIPES AND D)IGINEERED CHANN-11 SECTIONS.
3. 1 9 Hlp6L
A PER11111-INENT, EPOSION-RESISTANT GROUND COVER OFLARGE, LOOSE, ANG'ULAR STONE V11PT1 FXrE-R FABRIC OR GRANULAR UNDERLININa TO
PROTTECT 774-F 50/1, FROM THE FROD, Vic' FORCES OF CONCENTRATED RUNOFT, SLOW 7HE VELOCITY OF C0NCffN7T?A7-FD RUNOFF WHILE EINIHANG11VG
THE POTEENTIAL FOR 1A00PATJON, AND TO STABILIZE SLOPES WIN SEEPAGE PROBLEM-`�, ANDIOR NON-CONESIVE SOILS. USE WHEREVER SOIL
AND W47ER INTERrACE AND Pik SOIL, CONDITiONS, WATER TURBUIVENCE AND VE-10GITY, EXPECM.-D VE-GETARVE COVER, ETC., ARE ,"15"UCH MAT
rNE SOIL MAY -FRODE UNDER f14E DESIGN r-LOW CONDITIONS,
3.20 -R
SMALL T&I,dPORARY STONE DAilYS CONSTRUCIED ACROSS A SWALE OR DRAINAGE DITCH. TO REDUCE THE VELOCITY OF CONCENTRATED
STORMW47ER FLOWS, THEREBY REDUCING EROSION OF THE SWALE OR [)ITCH. THIS PRAC17CE ALSO TRAPS SEDIMENT GENERATED T-`R0M
ADJAI C10-VT AREAS OR PrInE DITCH IT-VELF, MAINLY BY PONDING OF THE S'r01?M,141Arr--R RUNOAT� 7741S PRACTICE, UTILIZING A COMBINA, TION OF
STONE SIZES, IS L111111TED TO USE IN SIVALL OPEN aJANNELS W111CH DRAIN 10 ACRES OR� LESS.
0,31 LRARr SE62h�/ �'�
k
7NE ESTABLISHMENT OF A TSUPORARY VEGETATIVE- COVER ON 0137YRDED AREAS BY SEEDING WITH APPROPRIATE RAPIDLY GROWNG ANNUAL
PLANTS. TO REDUGE DROSION AND S'E01,14ENT47ION BY STAa1L1_71iVG DISTURBE0 AREAS THAT MLL NOT BE BROUGHT TO FINAL GRADE' rOR A
PERIOD OF MORE 7HAN 30 DAYS. TO REDUC-E' DAMAGE FR0114 SE104ENTAND RUNOFF TO DOWNSPREAM OR OFF�-S/7-r AREAS, AND TO PROVIDE
PROrECTION TO BARE SOILS kXPOSEED DURING CONSIRUCTION UNIX P-EhMAND'VT 11EGETA 77ON OR OTHER EROSION CON7ROL MEASURES CAN BE
rSTABLISHEO.
j.j-�� —PEFMILANCA111STM3,11.04772
M - -- -*
THE ESTABLISH11,401T OF PERT.-AINIAL VEGETARVE COVER ON DISTURBED AREAS BY PLANTING SEED. TO REDUCE EROSION AND DECREASE
SEDIMENT WEID FROM DIS77JRRED AREAS, TO PERMANENTLY STABILIZE DISTURBED AREAS IN A MANNER 7HAT IS ECONO&IICAL, ADAPTABLE TO
SITE CON01770AIS, AND ALLOWS SWLIECTION 01- THE MOST APPROPRIA ]E f1ANT i1YAJERIALS. TO 11111PROVE MILDLIFE HABITAT TO -01HANCE
NAI`URAL BEAUTY UrPON COMPLE77ON OF CON37RUC770N AC7711177-rS, ALL AREAS WILL RECE-111E A PERMANENT 1AE-GETATIVE COVER.
3.35-L,1ULCH/Na-
APPLICA770h] OF PLANT RESIDUES OR DINER SUITABLE PYA7F-RIALS TO 77-E SOIL !3URIACLF. TO PREVENT EROSION BY PROTECTING 7HF- SOIL
'C'
SURFACE MOM RAINDROP IMPACT AND REDUCING 771E VELOCITY OF' OVERLAND F-LOW IrO FOS7ER T-IE GROW7H OF VEGGE7AIION BY INCREEA,�)ING
A VAILIABLE 1101STURE AND PROVIDING INSULA 770N AGAINST EXTREME HEA T AND GOLD. AREAS V11-11GH 14A VE BEEN PERMANENRLY SEED-,P�-D
SHOULD BE MULCHED IMME011-1 7EL Y FOLLOMING SEEDING. AREAS WHICH CANNOT aE SEEDED BECAUSE OF' 71AE SEASON SHOULD DE 114ULCHED
USING ORGANIC MULCkI. A,dUI CH MA Y -81' USED TOCE77-IER WIN PLANTINGS OF' TREES, SHRUBS, OR CERTAIN GROUND COVERS WHICH DO NOT
PI?O111DE ADEQUA7E,SO1-1 STABILIZATION BY 774EMSELVES, GAN BE USED IN CONJUNC7701V WIN 7EA4PORARY SEEDING.
3.37-J�RFEES �SHRUB�S.VIJVL�S�& G�VQUft
ff) COVERS:
STABILIZING DIS7URGE-0 AREAS BY -ESTABLISHING 11-EGETA77VE COVER MIT/ TREES, SHRU&S, VINES, OR GROUND COVERS. TO AID IN STABILIZING
501-1 /N AREAS WHERE WGET-47701AI OVFR THAN TURF IS ,"REr-ERRIT-0, TO PROVIDE FOOD AND SHELTER FOR WILDLIFI-r-- WHERE MILDLIFIT HADITAT IS
DESIRABLEE APPLIES IN AREAS WHERf" nJRF E37ABLISHAIIENT IS DIFFICULT, ON STEEP OR ROCKY SLOPES WHERE MOWING IS NOT F-FASI-BLE,
WHERE ORNAMENTALS AR DESIRABLE FOR LANDSCAPING PURPOSES, AND WHERE WOODY PLANT5, ARE DESIRABLE FOR SOIL CONSET?VA77ON, OR
TO ESTABLISH WILDLIFE HABITAT
J.36 BLA VET M i ALQ
�A-TZL -
INSTALLATION OF A PROITECTIVE COVERING OR A SO11. STABILIZATION MAT ON A PREPARLOD PLANTING AREA Or A STEEP SLOPE OR CHANNE1 TO
AID IN THE CONTROLLING EROSION ON CRI77CAL AREAS.
J.38 77REE f-'RESERVA770N AND PRO7ECTION.
PR07-VCTION OF DESIRABLE IRETS FROM MECHANICAL OR OTHER INJURY DURING LAND DISTURBING AND CO/NIS7RUC710N AC77VITY TO ENSURE
7`HE SURVIVAL Or DESIRABLE 7REFS WHERE THEY WILL BE E-FFEC7711E FOR EROSION AND SEDIMENT CONIROL, WATERSHED PROTECRON,
LANDSCAPE BEAU TIFICA TION, DUST AND POLLU77ON CON7ROL, NOISE REDUCRON, SHADE AND OPHER ENVIRONMENTAL 8EIV-FFIT-3 Wrq,1LE IHE LAND
IS BEING CONVERTED FRO&I FOREST TO URBAN -TYPE US -ES, APPLIES IN TREEI-INHABIM-D AREAS SUBJECT TO LAND DISTURBING AC7711177-FS,
a39 DUST CONTROL:
REDUCING SURr-ACE AND AIR MOVEMENT Of- DUST DURING LAND DISTURBING DEMOLITION AND CONSTRUC77ON ACTIV177ES. TO PREVENT
SURFACE AND AIR MOVEMENT OF DUST FROM EXPOSED SOIL SURFACES AND REDUCE THE PRESENCE OF AIRBORNE SUBSTANCES WHICH MAY
PREES-EN T HEAL TH HAZARDS, TRAFFIC SA Pr TY PROBLEMS OR HARM ANIMAL OR PLANT LIFE. DUST CON TROL MEASURES SHALL BE EMPLO YED TO
PREVENT SURFACE AND AIR MOVEMENT OF DUST DURING CONSTRUCTiON. MEASURES &IYPLO'�-FD SHALL BE IN ACCORDANCE WTH 7HE VrESCH.
ER,C)SVON C010ROL LEG',E-M'
111�
�;�r --r_-=----n---- SAFETY ME VCE
U-
,�CE
EM
00N,37RUC-�qOV OV7RANCE
(--�)s
7e I-
� 751;5�
E!2-',1,-,--z-6-
CONSTRUCTION ROAD
STARIU-1-A TION
'e-1
�-So
-X--X ----X-
S11- T F-D'VU'
-1
/ -1�
uI,-
@91
INLET PRO',rEG'710N
* 199-7
J01
3.02 1 1-40
13.01-5
J.05
mm
kap)
W9
CULVERT INLEr PROI-ECTION
3.08
(�o/�----
—��—
7EMPORARY DIVERSION DIKE
309
fl-N
U�RIVVI
b�� h6l
7-E-UPORARY RIGHT-0 WAY
3.11
I P11 or, ;�
/ --,�,
(Or
==)
DI VERSION
,EMPORARY ,SEDIMENT rRAP
T
3.13
/--N1
��-O)
--
t
5601MENT OASIN
J 14
(1,5-,
,�
_-
------ i�,q]��
— ' --
� y' - /'�,,,,
, _,
" ,
-
PIPE OL/7LET PR07ECTION
31 18
-00
�
CHECK 0A,114
,120
�,---,�
( Is)
N�-�
- I
—(
I�
- rCJ1,11POrRARY SEEDM
3.31
F5—
�S
f)
,��
/----\
k3P--
PERMANENT SEEDING
J.32
(!")
--
F-7 7+-7---,
.
I. 4 -,
, ,
1-1-'r ,- , A
SOIL STABILIZATION BLANKIFT
3.36
Q/-IN
---f J--�-----
-AICIN6
IREE PROTEGPON FIE G'
3.38
-T)
/--\�
,9,
�
,-
I
- 41-D �) —
1 y
- DUST COA17ROL
13 139
* VJRGffiJ1A FER0510t,f el 5-0/kI-0VT G0iV-rr?0t.
HAY'401300K SPECInCA9011 AIU04VER
TABLE 332-D
5fl'Iffis SIPECIFIqC SEEDR46 M-1 XXTURES FOR PIEDM, fOk�rf ARWA
'rotal Lbs,
P
.9il-A-SuP-
NEW-Mmp-c—arra1�aw-
- Corrunercial or Residential
175-200 I'm.
. Kentucky 31 or IfLirf-TypeTall Fc-scue
95-100%
- hnprGved Pererrpiafl Ryegrwss
0-5%
- K,ontucky Blueg .
gnass
0-5%
.11lighh-111 �inteawl-C-Q-La-)yn
2GO-230 lib&
- Kentucig 31 or Tvrf='rypt� Tall Fesrue,
100%
1-1
�10--- n-nal-51-0-p-ei 3. —Iclf Jkws)
- ,+,
Ventudy 34 Fescue
128 lbs.
- Red Tqq Grass
2 Jbs�
- Seasonal Nitirse Crop �
920.1b-&
130 lbs,
-LD!E�--,iLAgi-,-nk--Og�;,el�,�l,lC-,D-C-(,Istcl�--r Jt�han-1111
Kentuclo] 31 Fescue
108ilbs.
Fv�d Top Gross
2 YO&
Seasonal P-11-irse Crop ,
20 lb5,
crowavetch ,*
-2QL,lbs
150 lbs,
* Use seasonal nurse crop, in acourdance- vifth seeding dates as staip-d below:
Fobn
jary 161'h throug
gh April � ... - � 1. I � I I � — — I I ArintialRye
May ist throtigh At�gust 136 .................. � .. , Fo,xtall Millet
mgust 16th abrough Ouobcr - � - � - - — � � .... � � I Pamnal Rye
Novernber through Fcbruary l5th .... — � ........ � . � Winte,T Ry-,
!" SiAntitute Sericeq lespedeza for Crovmve,teb east of Farnivilie, Va- QN/lay
through September iuse hulled Sericea, all other peneds, 'use unhvlled Sericea).
IfFlatpea is used in fieu of Crovvrvvetch, increase rate to 30 lbs�/acrie. z`,JI legurne
s--P,,d.m-ustb,-;�,DlroperlyirAocwilated Weeping Lovp,gra-3s may be added to arty slope
or low -maintenance rrii-x during wartner speding Perifid5; add 10-2-0 lbs./acre in
,all
-�Xe&
3.32
EEMOSION CONTROL NOTES
ES-1: UNLES,'.3 OTHER�WSE- INDICATED, ALL VEGETARVE' AND STRUCTURAL EROSION
AND SEDIMENT CONTROL PRACTICES MILL BE CONSTRUCTED AND MAINTAINED
ACCORDING To MINIMUM STANDARDS AND SPECIFICATIONS OF PHE VIRGINIA
EROSION AND SEDIMENT CONTROL HANDBOOK AND 11IRGIN/A REGULATION, VR
625-02-00 EROSION AND SEDIMENT CONTROL REGULATIONS
ES-2. THE PLAN APPROVIING AUTHORITY MUST BE NOTIFIE0 ONE WEEK PRIOR TO THE
PRE-- CONSTRUC RON CONFERENCE, ONE WEEK PRIOR TO THE COMMENCEMENT
OF LAND DISTURBING AC77111TY, AND ONE MEEK PRIOR TO THE FINAL
INSPEC TION.
,L-`S-J.-ALL EROSION AND SEDIMENT CONTROL MEASURES ARE To BE PLACED PRQ?
TO OR AS THE FIRST STEP /Al CLEARING.
ES-4.-A COPY OF THE APPROVED EROSION AND SEDI)WENT CONTROL PLAN 51-IALL BE
MAIN TAINED ON PHE SITE AT ALL 77)1//Ea
ES-5.PRIOR TO GOI111MENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN
INDICA TEO ON 7TIESE PLAINIS (INCLUDING BUT NOT LIA111TED TO, OFF -SITE
BORROW OR WASTE AREAS), 77-/-E CONTRACTOR SHALL SUBMIT A
SUPPLEMENTARY EROSION CONPROL PLAN TO THE OMVER FOR REVIEW AND
APPROVAL BY 7NE PLAN APPROVING AUTHORITY
E�S-6. n4E CONTRACTOR IS RE!'3PONSIBLE FOR INSTALLATION Orr-- ANY ADDITIONAL
EROSION COA17ROL MEASURES NECESSARY TO PREVENT tEROSION AND
SEDIMENTATION AS DETERiWINED BY RNE PLAN APPROWNG AUTHORITY
ES-7.ALL DISTURBED AREAS ARE- TO DRAIN TO APPROVEE-D SEDIMENT CONTTOL
MEASUR,ES AT ALL 77ME-5- DURING LAND DISTURBING ACTIVITIES AND DURING
,'317-E' DEVELOPMENT UA177L FINAL STABILIZATION IS ACHIEVED.
ES -a -DURING DEWATERING OPERATIONS, WATER PW-LL BE PLI&IMED INTO AN
APPROVED WATER F71-TERING DEVICE.
ES-9. THE CONTRACTOR SHALL INSPECT ALL EROSION CONMO-L MEASURES
PERIODICALLY AND AFTER EACH RUNOFF�-PRODUCING RAINFALL E "r- IT ANY
NECESSARY REPAIRS OR CLEANUP TO illIAINTAIN THE EFFECTIWIVESS OF THE
EROSION CONTROL 00110ES SHALL BE MADE h1,41111EDIA TEL Y
G,ener�511,t�o,ns,,Irnc*tioD-n,i),t,e,q,f,l),VErf)si,I)Lmfe�ndseilIM42nil,co,uAtt,ri)I 111 is
-P W
1. '111te planapproving authority raust be notified one week prior to the-, pre-coastruction
,
conferenc I e, on e we e if- prior to the. cornmen c QT-n, ent of land d i sturbilt P act ivity, 'and one wee k
, - � - I . . - _, . I , ,
prior to tlie� filial inspection.
9 All erosion and sedimentcontrol measures will be constructed andmaintained according to
iiiiDi,-mLirnstati,da,jzdsaiirlspe,�, cLitionsof,i�nellii,giiiiaErosioDaiidSeditnentConti-oI
Handbook and'Virginian Reguladons VR 625-02-00 Erosion and Sediment Control
Regulatiols,�
1 -All crosion and sedi ent control measures are to be placedprio to or as the "' ststep in
I . 111 'If I Illy
Cleaning.
4. A �,opy of theapproved crosictil and sedimen-i control plan shall be maintained on thesite at
all tim-es.
5. Prior to commencing land disturbing activities in areas other than indicated on these plans
I
(including, but not lirnited to, off -site borrow or wasteareas), the contractor shall submit a
supplentientary erosion control plan to the owner for review and kpp)royal by the plan
approvin g authorl ty.
6, 7he contractor is responsible for installation of any additionAe-rosion control aleasures;
necessary to prevent erosion and sedimelltation as detern-ii tied by the Plan appro ving
audhority.
7. All distu-ibed are -as are to di * to ap
� Win proved sed,iment control measures at all times during
tand disturbing activities and 0 aring site developinent until finalst4bilization isawbieved.
8, During dewatering operations, wate . i
r w It bepuryiped into an,�pp.roved filtering device.
1
9� 'the contractor sh,il -1 in s pectall erosion control ineasures periodip,ffly and af ter each L tiaoff -
I . , I I I � I
producirIg raii-dall event, Any necessary repairs or cleanup to niaintain the effectiveness of
the erosion- control devi ce5 sball beiri,ade Jjnrqed"jately�
10. All fill rinateiial to betaken frolit an approved, design&fed bol-rowarea.
I , � . � I _
11. All wastj� niaterials shJal be taken to all approved waste ayea. Earth fill shallbee inert
materials Only, free of roots, stumps, wood, Tubbish,and other debris.
12. -Botroliv or wasteareas are to be reclai med within 7 days of cornpletil on per Zoning
Ordinance section 5A.28.
11 All inert materials shall be transported in compliallce with section 13-301 of the Code of
Albemarle.
14� Borrow, fill or waste activity involving industrial-ty-pe power o-quiplinent shall be limited to
the- hours of 7:00ant to 9:00pini
1
15- Bofrow, fill or waste activity shall be conducted in a safe, manner thaln litaintailis lateral
,
support, or older to mirthnize any hazard Topersons, pirysical dar- a e to adjacent land and
- - , I ni a
iinprovements, and & age to any public street because o slides, sinkilrig, of collapse�
16. The developer shall reserve, the right to install, maintain, rernove or convert to pern-tarlent
I
_ -
s tormw ater manag emen t ,(a cili- ti e s wher e applitaolble all ero si o n. con Lrol rn e.a sure s reqi tired
by thi s plan regardless of the sale of ,any lot, upit,building or other 1portion of the Property.
I . I I ,- -
" '
17� Temporary stabilizatiout shall be temporary seeding and -mulciliDg. Seeding is to be at 75
� I - . � I I
lbs/aci e, and in the moliths of Septeujwer to February to consist a, 50/5 0 r-nix of Annual
Ryegram a Pot Cereal ItVintcr Rye, or in March and April to consist Cif Almulal -Rye, or lWay
I
fbrough August to consist of Oefmartl Nfillet. Straw �nulch is to be applied at 804bs/l 009f�
Alternatives are subject to approved by the County erosion coalfol, itlispector.
18� Permanent stabilization shall be lime apd feartillizer, permanent seediing, and niulch.
Agricultural grWeliniestone shall be,,applied at 90lbs/!()00sf, incogporated into the top 4-6
1 ,
inches of soil, Feitilizor shall be applied at 1000lbs/acre and consis�tof a 10-20- 10 nutrient
mir,� Perfflaiient seeding shall be, ap,p)hed,at 180lbs/acre and consistlof 95% Kentucky 31 of
� . 11 - . I , I
Tall Fescue and 0-5% Perennial Ryegrass or Kentucky Bhae8ras.s. Straw ni�ilch is to be
� I . .1 � . 1. - I ,
applied at 80lbs/100s-r, Alternatives are subject to approved by the 'County erosion control
_ - -
impector,
19- N-failitenance: A,11 me-a-sures are to be Awspected weekly and aftex each railiffall. Any dartiage
. I
-
Or clogging to siructural measures is to be repair immediately., S)ilt itraps are to be cleaned
when 50% of the wet storage volume, is filled with seditnent. All seeded areas are to be
reseeded when necessary to achieve a good stand of grass. ,�ilt fe-tice, and diversion dykes
,
1
which are collecting sediment to half their height must be cleanal aind repaired
.
I
immediately.
20. -All temporary exro5ilou and seditrient control rueasures are to be reniAoved within 30 tjays of
fillJ-)� site stabilization, when raeastucs are no longe-T needed, subject to approval by the .
county erosion contrdl inspector.
-,
21. This plan shall be void if the owner does not otbi-ain a per-m-it withiin 1 yeaf of the date of
I
kppfoval. (Water Protection Ordilionc.e sect -ion 17-204G.)
22. Permanent vegetation shall be installed on all denuded areas within nine (9) months after
the date !he land disturbing activity cormitericed. (Water Protection Ordinance section 17-
20713)
TA " LYE, 33 I -A
-1t,tVliNG R-FQU1xur1?,'A--Vu,rr5
FIOR 117-1141-plo, RARY -311TV-5
Recornrnextdod Appli,m'11011
21--1-1-11-1 0i - :: .
—
-
1,A- ow 4.2 3 tor�; per I-ae
4�2 to 5.2 2 to-w per alMl
-1 -?, zo 6 1 ton Per acTe
solff ce. Va. C131;VC
GENERAL SLOPE (3:1 OR LESS)
KENTUCKY 31 FESCUE
O
FEBRUARY 16 THROUGH APRIL
MAY 1 THROUGH AUGUST 15
AUGUST 16 THROUGH OCTOBER
NOVEMBER THROUGH FEBRUARY 15
128 LBS
2 LES
20 LBS
150 LBS
A'NNUAL RYE
FOXTAIL MILLET
ANNUAL RYE
WINTER RYE
- 3.31 'I
`�PIL�
T' �
AC-CF PTAME TIMWO RAXY SE EM NG P KANT MATE WAILS
�Qula� MYERLfi(C-r FOR,%-' R1,040fVs.
Rate
_U?-lut n19-P-=15
4�
(1144z)
Sept. I - Feb� 15
50151) NL� of
Anmul Ryegms
(1.01--al --affifl-1-1
&
50 - 10
Ceteal (Wime,) Ry,
f-se--ft-r - �ele)
Feb� 16 - Apr� 30
Annual Ryegrass
6t) - leg
"-R1-M-MqW-fl--n ".
May I - Aug 31
Golmin Nffllet
'0
"��,5�,Ia-,L,-,`i��) --1
svej�e: Va. Dsvic
NOTES.
1. LIME AND FERTILIZER NEEDS SHALL BE DETERMINED BY SOIL
TESTS AND APPLIED IN ACCORDANCE WITH VESCH STD. 3.32.
2. SEEDINGS TO BE MULCHED IMMEDIATELY UPON COMPLETION
OF SEED APPLICATION, IN ACCORDANCE W/ VESCH STD 3.35.
/—�
PERMANENT SEEDING SCHEDULE e-%N
- .>)
NO SCALE �P_-,�,
(STD. Ar SPF--C� 3,32 OF V]RGINIA EROSION &
ENT CONTROL HANDBOOK, 3RD ED.)
SEDIME
DESCRIPTION OF EROSION & S-E,T-IMENT E-13ROSION CONTROL JNOTES, & .)VAIRRATIVE ... M 0 -
E-QR- � . I- -
CONTROL MEASURE S-:- TNE PURPOSE OF T/-//,Fj LAND DISTURBING ACT1111TY IS TO GRADE THE SPRING NILL VILLAGE -31TTE FOR "I ,
EROSION AND SEDIMENT CONTROL MEASURES. FUTURE DEVELOPMENT 7NE TOTAL ARFA TO BE 01STURRED 011TAI THIS PRASE OF DEVELOPMENT IS � - " - ')
IT IS ANTICIPA7ED TO USEE CONSTRUCTION ENTRANCES, DIVE-RSION DIKES, EXISTING SEDIMENT 15 J-2 ACRES. 1 4 ',� A '
ENCEES WILL BE INS7ALLED To CONTROL SURFACE DRAINAGE. TEMPORARY EXISTING SITE CONDITIONS. ----I
BASINS, AND SILT F COTT R. COLLINT2,
(D ,�--A
SEEDING WILL BE USED IMMEDIATELY FOLLOWING ALL LAND DIS7URBANG-E ACTIVITIF-ES, 77-IIS SITE IS CURRENTLY WOODED AND SLOPES TO THt'--- SOUTI-I-EAST THE SIT-T- IS LOCATFD TO THE CD No, 35791 ",-,-
TEMPORARY STOCKPILE AREAS WILL BE MAINTAINED FROM TOPSOIL PHAT WILL BE STRI[-'JP-FV CAST OF A 110N STREET EXTENDED AND TO 7714E WEST OF SCOTT311ILLE RD. TTIE -SITE- DRAINS TO THE ,,C� 11�1,') g,-,
11
' ,
EXISTING 11110ORFS CREEK TO THE NORT14-FAST AND EXISTING ROADSIDE DITCNEES. CURRENTLY, PrILIERE ;P1 11 - )
FROM AREAS TO BE GRADED AND STORED FOR LATER SPREADING. STOCKPILE LOCATIONS SrHALL IS (1) EXISTING HOUSE ON 7-TIE PROPERTY THAT WILL RE REMOVED. 0 16-3
e
6C ON SITE AND SHALL BE STAUX1Z T
ED W TH A MWPORA R Y VEGE TA TI I/E CO VER. PERMA NEN ADJACENT AREAS�� 101VAL VOAG��
SEEDING WILL BE PERFORMED FOR ALL AREAS �rrl/CH MLL NO LONGER BE EXCA VA TED AND
71-11S SITE IS BORDERE-D 70 THE EAST BY SCOTTSVILLE ROAD AND TO THE WEST BY A IVON STREET
WHERE CONSTRUCTION AC77VITIES HAVE CEASED. PEITMANEINIT SEEDING SHALL ALSO ar-
EXTENDED. RESIDENTIAL DPfELLIAIGS EX/ST To 774E SOUTN AND COMMERCIAL BUILDINGS TO THE
----
PERFORMED FOR ALL DENUDED AREAS WHICH WILL BE LEFT DORMANT FOR A YEAR OR AWORE. NOR TH.
SELECTION OF SEED MIXTUREE WILL DEPEND ON THE (1111fE OF YEAR APPLIED.
OFESITE LAND DISTURBANCE
TEMPORARY SEEDING MLL BE PERFORMED FOR ALL DENUDED AREAS WHICH WILL BE LEFT
hilIPROVEMENTS TO BE AXADE WITHIN TI-IF V00T RIGI-IT-OF-WAY ALONG SCOTTSVILLE ROAD AND A VON
DORMANT FOR A40RE THAN SEVEN DAYS. MESE AREAS SHALL BE SEEDED MITI FAST
STREET EXTENDED.
�
G
7-ERMINA 77AIG VEGETA 77ON IMMEDIA TEEL Y rOLLOYYING GRADING OF PHOSE AREAS. SELECRON OF
CRITICAL AREAS.
SEED MIXTURE MILL DEPEND ON PHE TIME Or )EAR APPLIED.
TITEYE PROTECTION FENCING, SILT FENCE, AND 01VERSION BER&IS SHALL 13E MAINTAINED ALONG THE
CONSTRUCTION ENTRANCE.
PROPERTY LINES TO ThIE NORTI-I AND SOUT14- OF THE S17E TO PROTEXT T1-1E ADJACENT PROPERTIES.
CONTRAGTOR SIVALL ENSURE MAT ALL SEDI)WENT MAINTAINENANCE CONTROLS ARF ALONG
A STABILIZED PAVED CONSTRUCTION EV7RANCE WR4 A �111ASH RACK LOCATED AT POINrS Or
SCOTTSVILLE RD (ROUTE 20) TO ENSURE TI-11-IT NO SEDINIENT LE-AIIES THE SITE AND DRAINS ONTO
VEHICULAR INGRESS AND EGRESS ON A CONSTRUCTION SITE TO REDUCE 77E AMOUNT OF AdUD
ROUTE 20.
TRANSPORTED ONTO PAVED PUBLIC ROADS BY MOTOR VE711CLES OR RUNOFF
SOILS,
CONSTRUC77ON ENTRANCES SHALL BE INSTALLED AS SHOWN ON 7NE PLANS TO REDUCE THE
SOILS MAP IS INCORPORATED INTO TNE EROSION CONTROL PLANS WITI-1 SOILS DATA INGLUDED �W'[H
AMOUNT ,5CV1MENT TRANSPOR7ED ONTO PU41LIC ROADWAYS.
, ,,_
I
rH- IS IVA RRA T1 W
SILT FENCE:
SLQUENCE QT- CONSTRUCTION.
A 7EMPORARY SEDIMENT BARRIER CONSISrING OF A S)INTHEIIC FILMER FABRIC STRETCHED
PHA SEE /.
0
ACROSS AND ATTACHED TO SUPPORTING POSTS AND -ENTRENCHED. TO IN7ERGEPT AND DEIAIA��
1. NOTIFY ALREMARLE COUNTY TO Sal-EDULE A PRE-CONSTRUCT(Ohl MEETING AS REQUIRED.
ffi� ;--
SMALL AMOUNTS OF SE-DIMENT FROM DISTURBED AREAS DURING CONS7RUCTION OPERATIONS IN
;Z PRIOR TO DISfUR-RANCES, THE LIA11IT5 OF DISTURBANCE SNALL BrE FLAGGED AND ME TREE
d- - -a-
_J
�5
ORDER TO PREVENT SEDIMENT FROM LEAVING THE STIE. TO DFCREASF rNE- VELOCITY OF SHEET
PROTECTION FENCING S[-IALL BE INSTALLED,
L
E
FLOWS AND LOW-TO-MODERAIE LEVEL CHANNEL FLOVIS. THE SILT FENCE BARRIERS SHALL BE'
-
,
J NO E-ROSION CONTROL MEASURES MA Y BE REMOVED DURING ME CONSTRUCTION PROCES-r3'
I P-
0
U
x
rn
WITNOUT TNE APPROVAL FROM TNE INSPECTOR ON TI-IE PROJECT
" t'n
:�J
INSTALLED DOIYWV SILOPE OF AREAS W/774 MINIMAL GRADES 1`0 FI-1 7ER SEDIMENT LADEN RUNOFF
,eA. TAIE PROPOSED GONSTRUCTION ENTRANCE P11774 WASN AREAS SHALL BE INSTALLED AS SI-10VOY ON
"L
rA
If,
FROM SHEET FLOW AS INDICA7ED. THEY SHALL BE INSPEC7ED 1JIMAYEDIA7ELY AF7-FR EACH
ITIE PLANS. ME CONSTYUCTION ENTRANCE TO BE 1AISTALLE0 V11-1ERE GONSSTRUCTION VE-1-11CLE
V) ;;�
-J
<
RAINFALL AND MAINTAINED IN ACCORDANCE WITH 774E WRGINIA ER0,'-5'1O1'V & SE01h4F-AIT CONTROL
ROUTES INTERSECT PAVED PUBLIC ROADS, PROVISIONS SHALL -RE MADWE TO ANNIA40-- 17-/E
104 0
"�-
HANDBOOK (VESCH).
TRANSF'ORT OF SEOWENT BY (IIENICULAR) TRACKING ONTO TTIE PAVED SURFACL WN L RE
I %ft'. V)
5
0-
"
PERMANENT STABILIZATION:
S-EDlfijll--'J\IT IS TRANSPORTED ONTO A PUBLIC ROAD SURFACE, TNE ROAD SHALL BE CLESAINED
O*W
W
C
LU �e
�
THE ES TA OL I SHMEN T OF PERENNIA L VEGE IA T1 VE GO VER 0111 DIS TURaED A REA S 8 Y PLA N TING
THOROUGkILY AT ME END OF EACH DAY SEDIMENT ShIALL BE REMOVED FROM THE ROADS BY
SEEU TO REDUCE EROSION AND DECREASE SEDIMENT Y11-1D FROM DISTURBED AREAS. TO
SHOVELING OR SWEEPING AND TRANSPORTING TO A SEDIMENT CONTROL DISPOSAL AREA. STREET
AA�A
I LZ
PERMANEN7LY STABILIZE- DISIVRBED AREAS IN A MANNER 774AT IS ECONOMICAL, ADAPTABLE TO
WASHING SNALL -i9E ALLOWED ONLY AFTER SEDIMENT is RIEWOVEV IN THIS IWANNER.
I
SITE CONDITIONS, AND ALLOWS SELECTION OF 77-/E MOST APPROPRIATE PLANT MATERIALS'. TO
5. INSTALL THE INITIAL CONSTRUCTION MEASURES AS SHOWN 01\1 THE PHASE / EROSION CONTROL
IMPROVE WILDLIFE I08jTAT TO ENHANCE NATURAL BEAUTY UPON COMPLE77%] OF
SIVEET 77,41S INCLUDES (1) SEDIMENT BASIN, (1) SEDIMENT TRAP� SILT F-ENCE, WIRE SILT rEENCE,
CONSTRUCTION ACTIV17M.-S, ALL AREAS WLL RECEIVE A PERMANENT VEGETA77WE COV�-R.
AND OIVETTSIGN DIKES. JVIEASURES INTOE)IDED TO TRAP SEDIhIENT ,13HALL BE CONS7RUCTED AS A
FIRST STEP VVIPd ANY LAND DISTURBANCE ACTIVITY AND SrUALL RE FUNCTIONAL BEFORE
TEMPORAR '
EMPI -ARR ING.
.AIIADE
UPSLOPE LAND DISTURBANGE TAKES PLACE.
THE ESTABLISMAYENT OF A TEMPORARY IlEGETATIVE COVER Ohl DISTURBED AREAS BY SEEDING
6 IN ADDITION TO ENSURAING THAT TNE PAWED CONSTRUCTION ENTRANCE ARE INSTALLED, /NSTALI
WITH APPROPRIA TF RAPIDLY GROWING ANNUAL PLANTS. TO REOUC-E EROSION AND
SOIL STABILIZA TION BLANKETS AND MA TTING TO THE TEMPORARY SEDIMENT BASIN SLOPES AS
SEDIMENTATION BY STABILIZING DISTURBED AREAS 7HAT WILL NOT BE BROUG14T 70 FINAL GRADE
SNOW/N ON THE PFIASEE I ERO-310h/ CONTROL PLAN.
FOR A PERIOD OF 1111ORE PHAN 30 DAYS TO REDUCE DAMAGE FROM SEDIMENT AND RUNOFF TO
PhIA SE I/:
I
DOWNSTREAM OR OFF -SITE AREAS, AND TO PROWDE PROIECTION TO BARE SOILS ExPOSED
7, ONCE ALL THE PHASE I EROSION CONTROL ITEMS 14AIIE BEEN INSTALLED As SIVOW ON PrIE
DURING CONSTYUCTION UNTIL PEFOYANENT VEOETATION OR 07HER EROSION CONTROL J14-FASURES
EROSION CONTROL PHASE / PLAN AND TNE INSPECTOR HAS APPROVED IJHE EFROSION CONrROLI
CAN BE ESTABLISHED.
11YEASURES, PHE CON TRACI 01? CAN BEGIN GRADING OPERATIONS STABILIZATION MEASURES SH14LL
DUST CONTROL: I
OE APPLIED TO EARPrIEN S7RUCTURES SUCH AS DAMS, OXES, AND DIVERSIONS IMAYEDIA Pot- Y
—
AFTER INSTALLA TION.
REDUCING SURFACE AND AIR MOVEMENT OF DUST DURING LAND DIS77JRBING, 11)[1_3,100770N AND
5
f-1 ROUGN GRADE 7HE SITE TO PNE CONTOURS SNOWN ON 114E ROSION CONTROL PAI SE // PLAN.
E A F
LIJ
-
M
C-ONS7RUCTION AC77WTIES.
DRAINAGE STRUCWRES AND INLET PROTECTION SHALL BE INSTALLED AS SHOWN ON fNE PLAIV
!;�
-A
I -
-1
TO PREVENT SURFACI" AND AIR MOVEMENT OF DUST rl-RO&I EXPOSED SOIL SURFACES AND
DRAINAGE SIRUCTURES ,314ALL OUTFALL INTO TNE SED#10-ENT BASIN UNTIL Tj�-/F SITE IS STABILIZ-FD.
0
---
r1-1
REDUCE IHE PRESENCE OF AIRBORNE SUBS 7ANGES WHICH MA Y PRESE-Al T HEAL 77-1 HAZARDS,
9. T14E SEDIMENT BASIN SHALL OUTFALL ALONG THE OUTLET PROTECT70N (RIPRAP) INTO 7-14-k
I
I
7RAFFIC SAFETY PROBLEEMS OR HARAII ANIMAL OR PLANT L/rE.
EXISTING ROADSIDE DITCH ALONG ROUTE 20. ONCF STT-106 14AS BEEN INSTALLED THE
-
M-P E \1 ND I M I FUEN ,
,, -_-FASURES ,5HA�t 8E E LOYED TO PREVEI T SURFACE A AR
QU,5T CONTROL M _O/E - T OF
CONTRACTOR ShIALL TIE TIVE TEMPORARY BARRE-1- INTO THE PER11,11,01LENT STR-106.
DUST DURING G0NS77?UC770N. MEASURES EMPI-04ED SHALL BE IN ACCORDANCE WITH 77-IF VESCH.
10. PIERMANENT OR TEMPORARY SOIL STABILIZATION St'LIALL BE APPLIED TO DENUDED AREAS MIR-11N
TEMPORARY DIVERSION DIKE.
SEVEN DAYS AFTFR FINAL. GRADE IS REACHED ON ANY POR770N OF ME SITE M1111PORARY SOIL
k9
OF COMPACTED SOIL C01VS77?UC7`ED AT THE TOP OR BASE OF A SLOPING D1,5,7UR8ED
SMMLIZA 770h] S'NALL BE APPLIED WIT74IN SEVEN DA YS TO DLNUDED AREAS TNA T JWA Y NOT BE A T
AREA, WHICH DIVERTS OFF--S17E RUNOFF A W4 Y FROM UNPROTECTED SLOPES AND TO A
FINAL GRADE BUT WILL RE)WAIN DORMANT (UNDISIURBEED) FOR 1-0tvaR T141-IN 30 DAYS.
STABILIZED OU7LET, OR TO DIVS-RT SEDIMENT -LADEN RUNOFF TO A SEDIMENT TTAPPING
PERAIIA NEN T S TA OIL IZA TION SHA L L RE A PPL IEV TO A REA S 7NAl T A RE TO BE 07-F T D ORYWA N T r0he
11 I
. ��
M1711V
S7RUCTURE. MAXIMUN EFFECTIVE LIVE IS 18 &IONTHS.
MIORE TRAN ONE YEAR.
,014A SE /A
� , I
V,
��
Z-11:1
ROCK CHECK DAMS:
11. ONCE T14E SITE IS STARILIZED AFTER PTIE GRADING AND ROAD CONSTRUCTION OF TRIS PROJEGT
SMALL, TEMPORARY STONE DAYS CON57RUCMED ACROSS A DRAINAGE DITCH 7-0 REDUCE THE
AND THE INSPECTOR HAS G/l/0V APPRO11AL, 7W CONTRACTOR GAN REMOVE TAIE EROSION
�,
VELOCITY OF CONCENTRATED FLOVIS, REDUCING EROSION OF 77-IE SVIALE OR DITel-1. LIM17-FD TO
CONTROL MEASUR-ES. NO ITEM ShIALL OF REMOVED UNLESS THE UPSTREAM AREAS ARE
USE IN SWALL OPEN CHANNELS WHICH DRAIN 10 ACRES OR LES5, SHOULO NOT -117E USED IN
SrABII-1,7ED AND INE INSPECTOR GIVES PERMISSION 711-E PROPOSED SEDIMENT BASIN V-1ALI BE
-
,
"''
LIVE STREAMS,
CONVERTED TO PERMANENT SVIA4 FACILITIES AS SNOWN ON TNE S11119111 PLAN. AT THE ThWE OF
r1-
(
STORM DRAIN If ILET PROTECTION..
TEMPORARY SEDI)WENT BASIN �fl',<S REMOVAL AND T141-: INSTALLARON OF Pr-/E PERMANENT
THE INSTALLATI'VV OF VARIOI KINDS OF SEDIMENT IRAF`P/NG MEASURES AROUND DROP INLETS',
UNDERGROUND OETEN-RON SYSPED41, 77-/-E CONTRACTOR SAIALL RE1111OVE PNE TF-11YIPORARY BARREL
."
OR CUR& INLET STRUCTURES PRIOR TO PERMANENT STAIDILIZATION OF ME DISTURBED AREA.;
CONNECTION INTO PERMANENT STR-106 AND PLUG ITS OPENING WATERTIGHTD
LIMITED TO DRAINAGE AREAS NOT EXCEEDING ONE AGRE, AND NOT INTENDED TO' COIN17ROL
12. MAINTAIN ALL EROSION CONTROL ME'ASURES AS SPECIFIED //V THE 1//R,',-;/A///4 EROSION AND
W
LARGE, CONCEN7RATE-D STORMPYArr-R FLOWS.
SMUENT CONTROL HANDBOOK, REMOVING ONLY MEN APPROWED BY TNE LOCAL PROGRAM
Jr
ADIWINISTRAFOR IN ACCORDANCE 011774 7W VIRGINIA- EROSION AND 3EDIAIIENT CONTROL HANDBOOK.
E9P-Q&AR-Y--S3 ED-IN AR
L:N-TI-7!R
13. ALL TENIPORARY EROSION AND SEDIMENT GOI TROL h -A, UR 'S S IALL -RE REA11011ED W/710 30
V ,4E 5 E A - I I
A SMALL PONDING AREA, FORMED BY CONSTRUCTING AN EARTHEN 61118ANKMENT WITH A STONE
DAYS AFTER FINAL SITE STABILIZA RON OR AF7r'--R THE TEMPORARY MEASURES ARE NO LONGER
111, I
OUTLET ACROSS A DRAINAG'E SWALE, TO DETAIN SEDIMENT -LADEN RUI�IOFF FROXI SMALL
NEEDED, UNLESS OMERPYISE AUMORIZED BY THE LOCAL PROGRAM ADAIIINISTRA TOR. 7RAPPE-0
---_ I-
. W
DISTURBED AREAS FOR ENOUGH TIME TO ALLOW MOST TO THE SUSPENDED SOLIDS TO SETILE
SFDIMENT AND TNE DISTURBED SOIL AREAS RESULTING FROM PNE DISPO-SITION OF TEMPORARY
OUT MAXIMUM EFFECTIVE LIFE IS 18 MONTHS.
MEASURES SlIALL BE PERMANENTLY STABILIZED 7-0 PREVENT FURTNER -FROSION AND
TEMP RY SEDIMENLUASIM
SED111,4EN TA TION.
ZENO
� I
A 7EEMPORARY BARRIER OR DAM WITH CON7ROLLED STORA,11W47ER RELEASE STRUCTURES VINICH IS
SOIL DESCRLP
0-- I E
FORMED BY CONSTRUC77NG AN EMBANKMENT OF COMPACTED SOIL ACROSS A DRAINAGEWAY. IT
. I
58C -MrERSVILLE SILT LOAM-1yo TO 15Y. SLOPES. 77-105F DEEP, WELL DRAINED 50/1-S ARE FOUND ON
IS USED TO DETAIN S'EDIMENT-LADEN RUNOFF FROM DRAINAGE- AREAS 3 ACRES OR GREA70?
GENTLY SLOPING TO S7EEEP RIDGES AND i1YOUNTAIN SLOPEa A40DERATIZ TO RAPID RUNOFF, W/7'"
�,
) 77 C R
rOR ENOUGH 77ME TO ALLOW MOST OF THE SUSPENDED -1:)'0-11DS TO SET LE OUT IT AN E
MOOERA 1E PERAYEA811-1 T'11.
CONS TRUCTEF-D ONLY WHERE 77-1-FRE IS SUFFICIENT SPACE AND APPROPRIATE TOPOGRAPHY
MAXIMUM EFFECT'VE LIFE IS 18 MONTHS UNI FESS D-ESIGNED AS A PERMANENT POND BY A
58D -11.4YEERSVILLE SILT LOAM-157i, TO 2,57,, S'LOPES. THESE DEEP, VIELL DRAINED SOILS ARE FOUND
U,
QUALIFIED PROFESSIONAL.
ON GENTLY SLOPING TO STEEP RIOGE5 AND MOUNTAIN SLOPES. RAPID RUNOFF, ,1411 TH
MODERA TE AERIWEA811-1 TY.
OU77-ET PROTECTION.
THE INSTALLATION OF RIPRAP CHANNEL SECTIONS ANDIOR SIILLING BASINS BELOW STORM
72CJ - RABUN CLAY LOAJ111-77o TO 15-Yo SLOPES. 774-FSE DEEP, 0rc.-IL DRAINED SOILS ARE FOUND ON
,
� "I
ZI
DRAIN OUTLETS TO REOUCE EROSION AND UNDER-CUTTNG FROM SCOURING AT OUTLETS AND To
GENTLY SLOPING TO STEEP RIDGES AND MOUNTAIN SLOPE3. MODERAPE TO RAPID RUNOFT-,
REDUCE FLOW VELOCITIES BEFORE STORMWATER EENTERS RECEIVING CHANNELS BELOW THESE
WITH MODERATE PERMEABILITY
QJMETS�
SEEF)ING.-
CULVERT INLET PROIJECTI
.TEW`1QR.ARY
ALL DENUDED AREAS WHICH WILL BE LEFT OORMANT FOR EXTENDED PERIODS OF ThillE - LL BE SEEDED
W
A SEDIMENT FIL TER LOCA TED A 7' THE INLET TO STORY SEWER CULVERTS WHICH PREInr- VTS
YVI TH FA S T GERMINA TING TEiVII-10RAR Y VEGE'TA TION hV111YEDIA TEL Y FOLL 0 WING GRA DING. SEEI.E C TION OF PHE
SEDIMENT FROM ENTERING, ACCUMULA TING IN AND BEING TRANSFERRED BY 7HE CULVERT I T
SEED MIXTURE WILL DEPEND ON rHE 17)VE Or )'EAR AND WILL BE APPLIED TO DISTURBED ARES THAT
ALSO PROVIDES EROSION GON7RO-I AT CULVERTS DURING THE PHASE OF A PROJECT WHERE
WILL NOT BE BROUGHT TO fr-INAL GRADE WITHIN 30 DAYS�
ELEVA 77ONS AND DRAINAGE F-1A TTERNS ARE CHANGING, CAUSING ORIGINAL CONTROL MEASURES
PLANTS -SHOULD BE SELECTE-D APPROPRIATTE TO THE- SFASO/V AND 531TE CON017ION53 FROM TABLES J,JIB
TO aE INEFFECTIVE
AND J.31C, NOIJE THAT TABLE 3.318 PRESENTS PLANTS WHICH CAN BE USED WITHOUT CYTEENSIWT
Ul
SArETY FENCE:
EVALUATION OF SITE CONDITIONS; TABLE 331C PRESENTS h4ORE IN-DEPTI4 INr-ORMATION ON 71TIE PLANT
A PR07ECTIVE BARRIER INSTALLED TO PROHIBIT UAIDESIRA13LE USE OF AN EROSION CONTROL
MA TERIALS.
MEASURE.
TO CONMOL EROSION ON B14RE SOIL SURFACES, PLANTS MUSTRE ABLE TO GER11,41NATTE AND GROW
"NNW
PERMANENT STABILIZA 770N:
SEEDBED PREPARATION IS ESS-EN'RAL.
Aff,
lav
460111
PERMANE & D ILL BE APPLIED TO ALL DISTUR80 AREAS AS PER 7RE PERMANEAIT
NT S W
AN EVALUATION SHOULD BE CONDUCTED TO DETERMINE IF LIAIIIE IS NECES'SARY FOR T04PORARY SEEDING.
- I -C-ING
STA81LIZATION OF THIS EROSION & SEDIMENT CONTROL NARRATIVE.
TABLE 3-31A MAY BE USED TO DETEW)WINE 77-IE AC71JAL NFED ALONG WITH SUGGESTED APPILICA,
LtON
RA TES:
WININIM
T/- � I
AFTER GONSTRUG77ON IS COMP-LETED, ALL DISTURBED AREA'S OF IE SITE WILL BE L1AjEQ,,
FE
-RTILIZER SHALL BE APPLIED AS 600 LOSIACRE OF 10-20-10 (?4 LBS/1,000 so. rT) OR EQUIVALENT
M
FERTILIZED, AND SEEDED AS PER CURRENT I/DOT STANDARDS. THIS -SHALL CO,N!-qST OF
NUTRIOITS. LIME AND FER77LIZL-R SHALL BE INCORPORATED INTO PHE TOP 2 TO 4 INCHES OF THE SOIL
THE FOLLOWING.
IF' POSSIBLE,
WJ
TOP SOIL - 2" DEPTTH
L/JV/E - 2 TONSIAGRE
IF T14E AREA HAS BEEN RECENTLY LOOSENED OR DISTURBED, NO FURTHER ROUGHENING IS REOUIRE-0.
FERTILIZER - 600 LBSIACRE OF 15-30-15
WHEN 774E AREA IS COMPACTED, CRUSTED, OR HARDENED, THE SOIL SHALL BE LOOSENED BY DISCING,
SEED -- ERNST 5311 CONSERVATION SEED M1,,'( - ERNMX-114 (45 LBSIACGRE PEIVNI-AwN
RAKING, HARROVIING, OR OTHER AGGEPTABLE MEANS. TRACIVNG W11-PrI BULLOOZER CLEATOS- IS MOST
=J
CREEPING RED FESCU-F� JZ5 LBSIAGRE ARGILE KENTUCKY BLUEGRASS, J75 LBSIACRE
EFFEEC77VE ON SANDY SOILIS. THIS PRACTICE OFIEN CAUSES UNDUE C011,4PACTION OF TNE S011 SURFACE,
ESPECIALL Y IN CLA YEY 5011-S, AND DOES NOT AID PLANT GROWTH AS EFFECTIVELY AS OPHER J1,4E 7TIODS
'
PARK KENTUCKY BLUEGRASS, 15 LBSIACRE ANNUAL RYEGRASS & 15 LBSIACRE PLEASUirTE
OF SURFACE ROUGHENIN0.
PERENNIAL AFTER 774ESE AREAS ARE STABILIZED 7"EY WILL BE MOWED AND MAINTAINED
0
ON A REGULAR BASIS.
SEED SHALL BE E`VFr-NLY APPLIED V117H A BROAOCAST SEEDER, DRILL, CULTIPACKER SETEDER OR
NYDROSEEDER. SMALL GRAINS SHALL BE PLANTED NO JWORE THAN Ik INCHES DEEP. SNIALL SEEDS, SUCH
MAIN7ENA
AS KENTUCKY BLUEGRASS, SHOULD BE PLANTED NO A ORE TIAN 4 h CH DE �
// T V ,Ff-� OTHER GRASSES AND
IN GENERAL, ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CHEGKED DAILY
LEGUMES SHOUID BE PLANTED FROM 111 INCH TO � DEEP.
I U
AND AFTER EACH SIGNIFICANT RAINFALL, SPECIFIC A T7F-N77ON WILL BE G/W TO THE
FOLLOWNG ITEMS,
SEEDINGS MADE IN FALL FOR WINTER COVER AND DURING HOT AND DRY SUMYWR IWON7745 SHALL BE'
A. SEDIMENT BASINS ANDIOR TRAPS WILL BE GLEANED AND MAINTAINED IN
MULCHED ACCORDING TO MULCHING, STD. & SPEC. J-35, EXCEPT 114AT HYDROMULGHES (IF-18-ER JWL/LC[1)
ACCORDANCE WITH 77-IE 111RCIN/A EROSION & SEDI&IF-AIT CONTROL HANDBOOK.
WILL NOT BE CON ADEQUATZE� STRAW 11JIULGH SHOULD OE USED DURING 7HESEE PERIODS,
B. ALL GRAVEL OUTLETS WILL BEE CHECKED REGULARLY FOR SE01MENT -BUILDUP 774AT AREAS WHICH FAIL TO ESTABLISH VII-�(EIATIVEF COVER ADEQUARF TO PREVENT RILL EROSION WILL BE
WILL PREVENT PROP-FR DRAINAGE IF 7`HE GRAVEL IS CLOGGED BY SEDIMENT, THE RE-SEEVED AS SOON AS SUCH AREAS AREE IDENTIFIED.
GRAVEL WILL BE REMOVED AND CLEANED, OR IT 0111-L BE REPLACED.
C. ALL SIL T FENCE BARRIERS WILL BE CHECKED REG'ULARL Y FOR UNDERMINING OR
DETERIORATION OF THE FABRIC AND REPAIRED AS REOUIRED. SEDIMENT SHALL RE
REA40VED WHEN THE LEVEL OF SEDIMENT DEPOSITION REAGIVED HALF WAY TO THE S TORM WA 7ER RON- OFF CONSIDER, A TIONS: .1, �
. I
TOP Or THE BARRIER STOR1101A TER MANAGEMENT THE STORAWIVA7ER RUNOFF �ROJW 77-IIS PROJECT DRAINS 7EDVIPORARILY fO I . I
D. ALL SEEDED AREAS WILL BE CHECKED REGULARLY TO SEE THA' T A GOOD STAND IS THE SEDIMENT BASIN & TRAP. 7`74E SEDIMENT BASIN WILL BE CONVERTED TO PERMANENT STORMWATER 11 tt
MAINTAINED. AREAS SHOULD BE FERTILIZED AND RESEEDED AS NEEDED. MANAGEMENT FACI-1177ES AND ME SEDhild-ENT IRAP �flLL BE R-61110WED AFT-FR RHE DEVEE-LOPIVIENT OF 774E � i
SPRING 1-111-L PROJECT 11 -- 1
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1992 101 1992 102 1992 3.05 1992 3.05 1999- 1017 -H
SAFETY KENCE, STONE CONS TPR. UC'_T70N ENTRT A NCF, CONSTRUCTION OF A SILI T FENCE CONSTRUCTION OF A SILT FhEIVCE GRAVEL CURB LAET SEDIAWENT
(WITH WIRE SUPPORT) (WITHOUT 017-RE SURPORT)
SCOTT R. COLLINS��,
FI1, rTER
1. SET POSTS AND EXCAVATE A 4XV' 2, STAPLE WIRE FENCING TO THE POSTS, 1. SET THE STAKES. 2. EXCAVATE A 47X 4" TRENCH
70' MIN EXISTING TRENCH UPSLOPE ALONG THE LINE UPSLOPE KLONG THE LINE OF 0 No. 35791 1, �11
PAVEHENT OF POSTS. STAKES.
6'MAX.
OtJNTABLE BERN
Ink 71LTER CLOTH-"
(IPTIONA0
LU
bi
SIDE ELEVATION 7
E TING XIS MOUND
Ld
70' MON.
U)
rL OY
_j
10 HIM.
0
(OPTIONAL)
WASHRACK F
I F11 11
3. STAPLE FILTER MATERIAL 4. BACKFILL AND COMPACT 0
12, 111N. EXISTfNG 111L 0 W 11W TO STAKES AND EXTEND THE EXCA17ATED SOIL.
PAVEMENT
e IT INTO THE TRENCH.
i.
GRAVEL FILTER
NIDOT 01 POSIT! E DIRAINAGE 3. ATTACH THE FILTER FABRIC TO THE 14VIRE 4. BACKFILL AND COMPACT THE RUNOFF WATER WIRE MESH
COURSE AGGRE1 'ATF TO SEDIMENT FENCE AND EXTEND IT INTO THE TRENCH. EXCAVATE0 SOIL.;�/FILTERED WATER
T ECE PERSPECTIVE VIEW
MU$T EXTEND FULL WIDTH
OF INGRESS AND EGRESS Jill
OPERAMON P LA 1\1 VIEW
IT kfiII.
F-f 0 i P"
W
Now
__T51 MIN. Jill
NSTA SHEET FLOW it -LUMON In:
(PERSPECTIVE VIEW
SEDI'MENT MIN. 8"M
FILTER ow CJ 0"
F_ FLOW CONCRETE CUTTER 127 __4 - ;t
SECTION A --A Ln
CURB INLET Uj U)
A A
EXTENSION OF FABRIC AND WIRE INTO THE TRENCH. SPECIFIC APPLICATION �n
.2
FILTER FABRIC N E Uj
THIS METHOD OF INLET PROTECTION I -APPLICABLE AT CURB 11 L TS
WHERE PONDING IN FRONT OF THE STRUCTURE IS NOT U. YELY TO CAUSE :3
s, MIN. 6 v
INCONVENIENCE OR DAMAGE TO ADJACENT STRUCTURES AND UNPROTECTED
REINFORCE CONCRETE IDRAIN SPACE POINTS A SHOULD BE HIGHTER THAN POINT B. AREAS. V)
PERSPECTIVE VIEW PERSPECTIVE VIEW WIRE Ew
DRAINAGEWAY INSTAUATION
PLASTIC FENCE METAL F'ElqCE SECTION B-B (FRONT ELEVATION) GRAVEL SHALL BE VDOT #3, §357 OR 5 COARSE AGGREGATE.
0
Souroa- Adapted from k-pstailat and Filter
Source: Ada- Source� Adapted from $oarce. Adapted from _L -
pted from Convied Plastics and Plate 3.01-1 -1-9 Egbric
Aldary amiSig s -for ,gil- jR_ktp1Jlafion Of _Strawaqd Fabric Filter Ew
plate 10Z Barders Shemood and Wyant Plate 3,05-2
`VD,Cj)T Rood and Brldm�_Standards Bfmiott —and q1g_diLwent_C_o_ntro1, and Va. DSWC ka-Y-n-k1s for _Sedim-ent QQn—trol, Sherwood and Wyant Plate 3.05-1 Source. Ila, DSVIC Plate 3.0/-6 6i
S
1992 107 1992 3. 0 811 1992 3. 11 1991", 3.18 1992 3.20 -0
PIP-E, OUTLET CONDITIONS ROCK CHECK DAM
SILT Kf,"NCE, DROP INLET
SfLT -Fl,"NCE CULVEERT LIVLET TEMPORARY RIGHT-OF-WAY
PROTEC770N
JPR 0 TE, C TIO N A A 0
DIVERSIONS 0
2 X 4' WOOD FRAME 2 ACRES OR LESS OF DRAINAGE AREA: 0
DROP INLET
WITH GRATE ENDWALL
VDOT #1
-------- MAW
COARSE AGGREG7�TFE E
1,51 MAX, FRAME I k 0
T ------- -------- 3'
PIPE OUTLET TO FLAT 0
TOE OF FILL -+-i-- CULVERT FILTER CLOTH
AREA WITH NO DEFINED
CHANNEL (OPTIONAL)
3' HIN. PTAN VIEW
(DO10INSTREAM VIEW)
GATHER L
EXCESS VDOT #1
AT CORNERS COARSE AGGREGATE
----------------
d FLOV7 >
PERSPECTIVE VIEWS
z
TOE QF� FILL SECTION A -A rNTMI PERIMETER
FILTER CLOTH FEW 114 O'-T; RECOMME-RIDED rO'R Cn
TYPICAL GRAVEL STRUCTURE
STAVE co
I. SILT FENICE Ana DISTANCE is 61 MINIMUM IF FLOW A 2-10 ACRES OF DRAINAGE AREA: C� I
FABRIC - IS TURARD E&IRANKMENT I
3d
L FLOW
A
COMPACTED SOIL --------------
0 PTIO NAI L S T 0 NE C0.1111BINA TION io
------------------ PIPE 01 ILE- r TO WELL N
3' C)
-- ------------- DErINED CHANNEL
Kio FILTER CLOTH
ELEVATION OF STAKE AND 1 PLAN VIEW _141 (OPTIONAL)
--- L N
FABRIC ORIENTATION DETAIL A L (DOWNSTREAM VIEW) N
A 0
0 VDOT #1
FLOW COARSE AGGREGATE
SPECIFIC APPLICATION CL
THIS METHOD OF INLET PIROTECTION IS APPLICABLE WHERE THE 3-1) 6' FLOW
SECTION A -A 3'
N LET DRAINS A RE1_kT_1VE;U)( FLAT AREA (SLOPE 1\10 GREATER rTLT_11R CLOTH KEY IN RFOOMMENDED ]FOR ENTME PERIMETER
TH-AN' 5:7.) WHERE THE INILET SHEET OR OVERLAND FLOWS (NOT NOM�S: I- APRON WING MAY BE PIPRAP, GROUTED RIPRAP, GARION
-EXCEED-ING I C.F,S.) ARE TYPICAL. THE METHOD SHATT NOT CLASS I RIPRAP BASXET, OR CONCFET-P.
_APR_fY TO INLETS RECEPI)ING CONCENTRATED FLOWS, SUCH AS VUOT #3, #357 OR #5 COARK AGGRF-GAfE
IN STREET OR HIGHWAY MEDIAN'S. TO R�FLACE SILT FENCE IN ' HORSESHOE " WHZ\I TYPICAL EARTHEN STRUCTURE 2. La IS THE LENGTH OF THE FIPRAP _VRON AS CALCULATED > 0
HIGH VELOCITY OF FLOW IS EXPECTED USPIG PT-ATES 3,18-3 AND 3.18-4. &
3. d = 1.5 TIMES THE MAXIMUM STON-C DRAMZTER, BUT NOT CLASS I RIPRAP
1XISS THAN 6 INCHES. 0
Ll
Soume: N.C. f--rosi(Lit _4ndS,di_g- c ttql Source: Adapted from VDIOT Standard
I�IqWng apj DesW_ 1 -1 qkg4j, 1988 Sheets and Va. D5101C Plate 3.08-1 Source: Va, DSNVC Plat-, 3.11-1 Source.- Va. DSINC Plate 3.18-1 Source- Va, DSWC Plate 3.20-1 UJ
Plate 3.07 0 3�
0 f m U
_j
i992 336 1992 3.38
TEMPORARY DIVERSION DLKE <
0
T Y P, ICA. L 0 R -,T.E N TA TJ 0 N 0 F F.ENCINC AND ARMORING
...... 2_7
_7�,RE,A_TAJE1NT — I r- 3, SIM.-w, 2,0e Jh,,z �,-av)ru xxo_ 1____4
9
01L S-TABILIZA, TION BIL-ANAC-TeT) Co m-pacted Soil
LU
SHALLOW L-n
SLOPE•j E
ON 3B_4_1_0 _jV SLOPES, STRIPS OF z NETTING PROTECTIVE 09VERINGS DRIP LINE REM-00. 0
THE SLOPE. 0
MAY BE APPLIED ACROSS Ul F- rn r_11
LLj
LL]
SNOW FENCE 45' mim
BERIA t go0
X-XSte�
WH-M[ THERE IS A BERM AT THE TOP OF THE SLOPE, I r,,-,! 0D fae Cf)
BRING THE MATERIAL OVER THE GERM AND ANCHOR IT P%.00
BEHIND THE BERM,
00 0
0
29f ix,,�,,mlo:
STEFP
SLOPE
014 LaPES, APPLY 130ARD
PROTECTIVE COVERING PARALLEL
TO THE DIRECTION OF FLOW o Ix men",
00 gr pap
AND ANCHOR ZZECURELY. FENCE �CORD FENCE
OPERATON pr
_PLAgnC FENCE
U)
CORRECT METHODS OF TREE FENCING f1m (D
Q)
I!, M444-
mt m;aIlAc'o
4`_771 h7
BRING NIATERViL DOWN TO A 1-0ifEL AREA BEFORE ki mim
TERMINATING THE INSTAM,�,TiON. TURN THE END
UNDER 4? AND STAPLE AT 12' INTZRV,15.
V)
DITCH
114 DITCHES, APPLY PROTECTIVE COVERING b -0
PARALLEL TO THE OIREQMN OF FLOW.
USE CHECK SLOTS AS REQUIRED� AVOIDii
A w4joWwam vyovx 1,�p -1of I tu0nma's";bg irl'AU460-13 ""Vim! a t3juji'm �iajobbfip***, LLJ
JOINING NfATERML N THE CENTER OF Aim _r Q)
THE DITCH IF AT ALL POSSIBLE, Ly
v mPR a wulb Urn %VA'a doof 61 milm, Ad o "Ind-offi, s
cmmdumt Im-ast" W4,41 wm"m AmAt bv C;NLrjjjWj g-4vzy, jkm t4g- ftWvy;gP to -m JOB NO.
u'
CORRECT TRUNK ARMORING WaKoveJ mftg, ana w, valf-A-v s*&_nakt,. AD tio, W
18 2, 11, 7
Not
77"7
TRIANGULAR BOARD FENCE SCfNLF C3
PAVED "�Pi._RKK W
AS NOTED
Source- Adapted Iron Ludlow Products Brochure Plate 3.36-1 Source, Va. Dsl;vc
Plate 3.38-2 SHFET No.
U)
Q
4
TCHLINE A)
T -1 5 H i--: gravel PLA HET (MA
-- - __ .... SCALE=5d op
A ------- A --------- IR. COLLINS!Z'
tE-TH S _T I E 1p E �V�EY
No. 35791
SUP, T IELEVATI0 0jV_A I -2 0 IIINV 0 T IIL X
DR APPROX-LOCAI PE GASLINE T _`arA I 0
N 01 \\A 102 0
IV 657 :4- EXISTING RNI U)
0
'9� LINE sic p S16'40'02"W. NV OUT 119.33'(fif -2 ---G2 U)
T V -A
DUIVIPSTER I> . .. .... LLJ > hone ---- -- ...... pole� & Telegrop k > CD
............ _j Esrnt. 1) 8 279 le 0 LU
FLOW DIRECTION GN _E A > ROW CrYP.) LU LU
ID. SHEET THI ....... . .... D
IU)
IP1 0
I------- :00e 0
-- - - - __- P1 AN SHEET (NIA:TCHi-7,� Pil Tf
-26 SCALIF-5o'
STE AN I D.B. 1244\p� 461 DAQ. 629 P. 6f6 PLAT 388 HAqM A ILLUG
I8 .5 8,590 p D.B. 16 NOTE: CONTRACTOR SHALL INSTALL S11 INSTALLED LT FENCE TO BE .... .... I2
NN IRE -i'OFF PROPERTY LI'ME AND OUTSIDE OF THE UMITS OF GRADING _TORTOENIS REPOSITIVE ITREE PROTE,CTION SHALL BE INSTALLED ON THE BACKSIDE OF THE SILT FENCF�� NOTE: CONTRAC p
M
--�DRAINAGEALOINIG DIVERSION DIKE rn ... . ......... r 06 N MUN 0
42EL?V;46 'SF VDR
- __ w/WIRE rn Apruxlmdp 0 0 Ch
D F,z m C
Vo Public Serl Emt. SF N:t5 UPPORT —1 TV, FL CONTRACTOR TO ENSURE POSITIVE 4 CD7 E
0
TtAP R04 DRAINAGE ALONG DivERsioN r)IKC_"1 / / / , I TS I'20 -4 I--- - -_- F, DUA >
�k,957 P 234P DA 0 IMIN_ JAMES T. 'A A. OR LIS Ilox DD Il 40 P� 33 ------ N / ", V_ >
IALAI L 13 OX QHT 0HpV (D? )D ��7,7 � �,2,8- 1 10, 5 MAIL UD J70�',5 6 4 4, � I' P L A 71' W-28 29 P. 616 PLAT 0
ILL=-7—Z- . ..... CY)
Iyj 6 DEVELOPNIENT LLC` 205 P. 22 PILAT-� —7SOIL LINE (TYP.) D . \ / I - . / 11 0 y -_ - IH.1k.I.P.B.1 P. 35 PL,'\T TIJP 90-2 LIM ITS OF DISTURBA 0
ED IE LEE AN H.1*.P.BA P 14 NICE AC'.. MIN! PL BE3T T III LIFE T ( ARE ;F A� 0
D.D� 1026 P/Tlm EVEN W. AND BEjV1 LIIA TIS OF T�AP 90�WB 90 W OR SHALL INSTALL SILTIFENCE TO BE INSTALLED D W'62-9 P-616 P 0
THE LIMITS OF GRADING. PROPERTY LINE AND OUTSIDE OF U)
//TREE PROTECTION SHALL BE INSTALLED ON THE BACKSIDE (OF THE SILT FENCE. :3
N
n Q)
AC-1 LIMITS OF DISTURBANCE IRAINAGE DIVIDE (TYP.) DA R STAGING AREA ... .. .. ... F- CONTRACTO -35V 0 �,q iAC TMP 90 NOTE: MINIMIZE SOIL COMPACTION AND PRESERVETOPSOIL Li 1: EXISTING GRAVEL DRIVEWAY. LOCATION OF, RONAYNE, I I C FUELING AREA DaA719 P. 402 TO REMAIN FOR PHASE h DA= UAL 4 4 V. ILOCATION OF DUMPSTER >
D.S. 10 P. 198 Plj\T 00
"T LO W D I RE ON IARROW (TYP.) 13,13'X15.5' crt - AC----' 0
......... . LOCATION OF PORTAN-POTTY SOIL DESCRIPTION (TYP.) sh h -C
F 1.37 e NX, of L' 01 w I0
GRAPHIC CALE TMP 9 1A 25 50 100 200 IILIFEF, TE NOTE: CONTRfi�[�
INSTALLARIVI DIVERSION ACROSS 8 .453 �HALL
D.B. RWD jHp i �j 0
_32 264 I( IN FEE _UNSTRUCTION Ef,ITRANCE.. PI ITNIPt,90-27 I ipch `0 ft. E
ISHEF E _T8FOR PROPOSED SAF-PTi-FENCE- -NOTE: SE - ------ CON RETE WASH FAND RGER AROUND SEDIMENT BASIN -1 1244\p. 461 DESIGN INFORMATION OUT AREA Ul
C .... .. .... 11�6 PLAT -EDG-F D"ER. 629 P. 6 :).388 Ul 0 I D.B. 90 P. 1164',PLAT 'HIGH AND 2'x7O' '690p PROPOSED4 MIN 'LONG WOODEN BAFFLF_S_._- -NOTE: THIS CO*NSTRUCTION ENTRANCE S\HALL BE 45 C E INSTALLED, OPERATED, AND MAINTAINED BY THE ++ + + + + ++ LU CONTRACTOR, ALL CONSTRUCTION TRAFFIC 1111 THIS
w/VVIRE AREA SHALL UTILIZE THIS CON7TRUCTION ENTRA Cc. Lj
F W,
CSI V)
Ix r �T_ SAFE wimpm
VDR AROUND SEDIME NOTE- CONTRACTOR SHALL INSTALL INLET PROTECTION AND SILT FENCE LU 0
IR� WITHIN THE RIGHT OFWAY AS SHOWN PRIOR TO WORKING WITHIN THIS 0
045 " F' " Vf I li,fiP 1, . + 5 NC�fE: SEE SHEET 8 FOF
A 0
FASHION, STABILIZE THE AREA, AND REMOVE THE E&S CONTROLS. serl DESIGN INFORMATION
AREA. CONTRACTOR SHALL COMPLETE THIS WORKW`TIHIN ATIMELY vo Pu f D. 21 (� DEN MARK IS
Tv -6rnm w \+ Vault& SI INE 0
91 Qo-. :+ i �,� — — F -bb- ELEVAT4p
BANCE 15.32 AC I -LIMITS OF DISTUR <
Q)
N, �G '530 ------- IN IV I7 II�52 87 MAILBOX . . . . . . . . . . . . MAILBOX 55,40 MA ILBC E
GN w/WIRF - - ------- EME�RGENCY SPILLWAY SUPPQRT :3
prom --- ---- VDH� < IFEJ D.B.288 P.80 1 _71- - 7� -__ - 0
IWJWIRE D.R223 R305 - 11 1 PS > C --- ------- IOH T"HrV iff "90-21 'VDH MON. VDH Va jPublfc Service EsTit. Aprox. 10' VEPGO Esrnt LEE AN ID.B.462 016 AvION. -PAP 90-21 H H T
T D JERRY LEE AND II90-21 '16 P. 2413 T EN B� HENP 11 0 I lm�mj r-WA IV. okuw 6. HUNT OR WA )NIT791 2066
TIMP 90-19 D -UPPORT JU D.B. 3�89 P. 68,71 PL'r D.D. ID.13� I 3A 718 -120 33 37 IYU _P-,328-0 P. 68, 7 PLAT 367 PLIINT I I D 3767 P. 332 FLETT LwWP. BKTTEN, JR D HY 6. Ht D.B. \j 717 P. 33 rb,B, 'I 717 P. 31 367 PLAT D. B. I 717 P. 31 SIGN SCALE D.B. 1350 P,, 226o, 22-1 PLAT D.B.1350 P. '--I, -PLAT - ------ D.B. 1350 P. 226, 227 PLAT - - --------- III-------- ... ISH NO�
PEI IQ)
ANTI-, VORTEX
DEVICE, DESIGN
140
PRESSURE RELIEF'
KWES I/Z` DIA
0)
A A
0
TOP STIFFENER (IF REQUIRED)
13--X_X_ ANGLE WELDED
TO TOP AND ORIENTED PER-
-7
(0 0
�i
PENDICULAR TO CORRUGATIONS.
III
0
0
TOP IS- 0,AGE CORRUGATED
METAL OR 1/W STEEL PLATE.
PRESSURE RELIEF HOLES MAY
BE OMM"ED, IF E14DS OF
CORRUGATIONS ARE LEFT FULLY
PLAN VIEW
UPEN WHEN THE TOP IS
ATTACHED,
TAG10FD
TE
CYLINDER IS-GAOE CORRUGATED
MEA'AL PRPE OR FABRICATED rROM
1/3
STEEL PLATL
.. ........ W MIN.
A 9 i. THE CYLINDE MUST E
'TEND
...... ..
F5 10 THE
FIRMLY A
TOP OF THE RISER,i
SUPPORT LIAR SIZE x 19,___ ,11.1.�11.'�
�a ..........
. ........ ....
........... . . .....
... . . . ..... _,_ - 6 REBAP M M,)
Ml it . ........ J___
�=_
2, SUPPORT OARS ARE WELDED
TO TH, TOP OF THE, RISIE
(TYPIC#k)
OR ATTACHED DY STRAPS
BOLTED TO TOP OF RISER.
RISM DIAMETER
S . IA--A
CTON
ISOMETRIC
'1992
Source. Va. DS'V,,VC Plate 3.14-4
OUTLET PROTECTION SIZING
TYPE
LENGTH
WIDTH
DEPTH
OPa,
VDOT CLASS -iA
14'
3 1
2 2
OP2
VDOTCLASS2A
i_LU
3 1
2 d
VD0TCL,ASSi_A
OP4
VDOTCLASS 2A
6'
31
2
SEDIMENT BASIN #3. DETAIL
SCALE-. ._i"=2o'
Sediment Trap Design #1
drainage area (acres) (<3) 0.92T
Ynsa1L"
ia J AA) I U M e
elevation (ft); area (sf)Aiolume(c)j volurne(cy)'' CREST OF STONE 4VEIR
c�rauNa
526.06; 70401 0.0
5227Mi 979. 0 838' 3'Iff'
�_�&Ooi 1293.0:, 1,97073_0!� 41
12TO
529.M 1634.0;
0 260' 1. 0 5124, 5" 194'.2'
17 PAX
F4 TER CLOTH
wet storage:
wet storage required (cy) (67*b;�,) 61. 6 OiSr' . PLATE JA3-1 MA�r,,E AC7,3E6ATF CLASS I RFRA-P
b Otto
rn of stone weir (ft) 527.50,
wet storage provided at this elevation (cy)i
slope of wet storage sides 21
weir length (ft) (6ylbA), 5.5,
dry siorage: bottom of trap eleNration (ft) 52& dry storage mquired (cy) (671DA) 61.6, bottom crap dimensions:
crest of G'ione wair 529.0 top of darn elevation (ft) 530
dry Gtorage, provided at this elevation' (cy) 127ff top width of dam (ft) 10i
line f &V storacIe sides 2: V top trap dimensions 35W4'1
Sediment Basin #1 Design
drainage area (acres)
11.32
basin volum. s: (using 2'contour intervals)
elevation (11) contour area (Sr)
volume (cy)
532.00 2710,0
0
534.00 6164.0
320.0
536.00 S9863,0
908.3
538.00 1378&0
17,80. 2-
540.00 '17933.0
2951.7
Nivot storage required (cy) (67"TA)
dewatering orifice elevation (ft)
wet storage provided nt this elevation (cy)
available volurrie before cleanout (cy) (341*0A)
cleemout elevation (ft)
dist,ince from cle)anout to orifice (ft) (> V)
dry Morage:
dry storage required (cy) (67*DA)
principle spillway crest (ft.)
dry storage provided at this elevation (cy)
diarneter of delmatering orifice (in)
diameter of fie)dbie tubing (in) (orifice+2")
runoff:
C (use- OA5 for bare earth)
tc (min)
I 2yr 4.10 0 2yr
I 25yr &00 Q 25yr
principle seray�
mwailable head (ft)
dieirne,ter riser (in)
spill"llay capacily, QP (ofs)
dian-p-ter trash rack (in)
barrel length (ft)
head on barrel through embankment (ft)
diarreter of barrel (in)
7500.4
535.49
758.4
384.9
534,20
1.3
758.4
537-50
803.8
6.0
8.0
0.45
10
20.89
33.62
IL00
48
39.00
72
101.75
6.00
18
MIN. 11 Vif SMLINAY
2'INITHOUT
HIGH WATER
f-
CREST OF EMERGENCY
/ SPILLWAY
MSER CREST
DRY STORAGE
-MCC
...................
wEr Sirow"f F
CLEANOUT MINT
STORAGE REDUM)
TO 34 C.Y./ ACRE)
design high water (ft)
top of dam (ft)
top width of darn (ft)
bottom of basin (ft)
approx bottom dimensions:
Upstream face slope:
downstream face slope:
baffles:
length of flow, L (ft)
effective width, We (ft)
L / We (baffles not required if > 2)
Collars:
depth of water at spillway crest (ft)
slope of upstream face (Z-. 1)
slope of barrel (Sb)
length of barrel in saturated zone (Ls)
number of permanent collars required
dimension of permanent collars
2P9,[9_e lluvay
required capacity (Q25-0p) (cfs)
bottom width (ft)
slope of exist channel (fVft)
rninimun length of exit channel (ft)
crest of spilliNay (ft)
538.50
540.00
10.0
532.00
21
31
YES
88
145
0.6
YES
5,50
2:1
0.98 %
40
2
4.0'Aff
YES
OM
10
8%
6
538.50
77-
VIP-
;001"moo,
X
�-001
F& PERMANENT)= 523.97
8L PERMANENT)=529.50
V , OW,
530
SEDIMENT TRAP #i- DETAIL
SCALE.
35'
MR
......... ...
GRAPHIC SCALE
20 0 10 20 40
( JIN FEET )
1 inch = 20 ft.
80
AT-H ohi%
NCO TT'F COLUNT2
No. 35791 1�v
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I - '1� I \ \, \11 , \ \ \1 I \it \1 �, i I I , il I 1. SUBAREA A IS USED TO CONFIRM CHANNEL , // — __ -DEVELOPMENT SWM PLAN: __�i -
, I
�, , AND FLOOD PROTECTION COMPLIANCE. IN ' "=- — , , � � � SCALE a, _iod 1, _____ ,\ \ " \ 'If � \ / � I i � THE POST -DEVELOPMENT STATE, THE VAST I- I , I " I / i
\ 11. \ \ �, 1 . MAJORITY OF THE SUBJECT PARCEL IS 1/1 / / / 'i / / / / / T, I i,i � � I
I I � '\% / 3 � .
, - --- -, I f , i / I
I � 1, DEETAINED WITHIN SUBAREA & I - " I ', �/
, , , I (
� 1. . I J�l i �/ , i! l/ il� �!
1� I-- f � I-, I ... 1, I � I 1 2 � SUBAREA 8 IS USED TO CONFIRM THE -.\ I \ J" /I I / // / I , ) � I
I-- 1 ,,/ ,�_ " 1�1�� - \ \ , I � EXISTING CULVERT's CAPACITY. I'll ) / \ I / i I , , li I if I �
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� � I ;� / I/ I CONTRACTOR SHALL ATTEMPT TO MINIMIZE 1-11 / i � \\ \ " � I I I i N \ / I �� ) \ 1\ //� , � , M � 11, it . \�< , / / i\ ,�l lil
- - __ _____ - - ___ - -1 """ t - - LI
WATFRSHED SLJMMARY
Qe Mqr_qI _Qonqtrucflo0 ip.tgs to Stormw ter. L_ _ _C_Lq__
M-m-01-19(nan LJRL�Km�, I I ,,Channel & Flood Protection Analysis Pre-DeveloK)ment Post-Dip.VPloompnt
1. All dams and constructed fill to be vilthin 95% of
moximum dry density Barad 2% of opUnnum moisture
content. All fill material to be appr a
geotechnical engineer. A geotechnical engineer is to
construction of dams.
2, Pips and riser joints are to be %votertight vilthin
stormwater Management ft-icilifles.
3. For temporary sedlrnen� traps or burins „It,ihlch are
to be converted to permanent stormwater
management faclIltles; conversion is noi: to take
place until the site is stabilized, and permission has
been obtained from the erosion controll inspector.
�Pre -Development Impervious Area,Summary
((DA A- Water Quantity)
Existing I rnpervous Areas 52,300 sf I
Pre -Development Impervious Area Summary
MA 8- Water Quantity) ---
Existing Impervous Areas 166,550 sf
3 M__
CN Area, ac. 1-year Flow, 2-year Flovi, 10-year Flow,
—
CN Area, ac, 1-year Flow, 2-year Flow, 10-year Flow,
I cfs cfs cfs
Cfs cfs cfs
62 19.63 7,07 14.06 41 . 000
—
75 19.10 2.34 12.60 39.91 -
Existing Cuiv,_PA C*apacfty Analysis
DAA
DA I3__
Pre-DeveloDment
P0,;t-DP11P10nm(-nt
C N
Area, ac.
1-year Flow,
2-year Floifil,
10-year Flow,
- N
Area, ac,
1-year Flow,
2-year Flow,
-
10-year Flow,
62
72
19.63
11.72
T07
6.94
14.06
10.004
41.80
24.25
t 7
� 5
_
_ 13
19.10
12.25
234
7.41
12.60
11,54
39.91
25.66 -
31.35 14.02 24.90 6&06
31.35 9.75 24.14 65.57
I ; I I \ I I I I k M : i I
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� THE STORMWATER QUANTITY
' I COMPLIANCE FOR THE SUBJECT
l PROPERTY/ DEVELOPMEENT IS MET
I
1- 'WITH DA A. CHANNEL PROTECTION
i 115 METVIA 9VAC25-370-66 SECTION
ECTION
' A &1a, FLOOD PROT I IS MET
,I i VIA 9VAC25-870-66 SECTION C.2.b.
/ I <:! _-
__
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1 , - Hr--,,D,qA!NAGE A,WE'A 17�61��Hr-___
1J " LEVEL'„ DRY SWALE -13 (IAIac.)
�
� SED SOL�LY FOR WATEE
,� .
JALITY CALCUUMC) 1
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Post -Development Impervious Area Summary Post -Development Impervious Area Summary I ftiip—e-r-v-io-u--s--Area —Sum ---m-a-f-r,-V-
(DA A, Water Quantity)
Proposed Buildings 111 0,07S sf
Future Imp. Area (NE Corner) 9,800 sf
Proposed Sidewalks 32,675 sf
Proposed Roadways & Parking Areas 0000,000 sf
Proposed Driveways 29400 sf
Existing Impervous Areas 48,575 sf
318525 �
J_0A P3, Water Quantity) —
Proposed Sidewalk 2,125 sf
Proposed Roadway 10,125 sf
Existing Impervous Areas 166,550 sf
= —
178,0800 sf
(Water Quality, Lirnits defined by LOD)
Proposed Buildings 110,075 sf
Future Imp. Area (NE Corner) 9,800 sf
Proposed Sidewalks 34,800 sf
Proposed Roadways c9m, Parking Areas 103,725 sf
Proposed Driveways 29400 sf
Existing Imperious Areas — — — 25,450 sf -
313,250 �
—
I
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SHEET NO. Q)
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UNDERGROUND DETENTION sysTEM DETAIL: SCALE "--2 d9
I 1
P-R_OPOSED VAR. -
( I _.. I
3�S PIGTI�i� STEEL VI�12 PLATE, AT
WIDTH SWM ESM PROPOSED ACCESS MH W/ STAIRS FOR
1 5a�H �D� PE
Ea�POINT, TODRAIN THE SYSTEA.COINCIDES IJVIIF INSPECTION ? MAINTENANCE TYP, F
P��P~�Tr LINE ACCESS MHT BE LOCATED PSTREANSEE DETAIL ON THIS SHEET.
�- - 2L
PIE AND � �
" --
��
PROPOSED LOWER 0AT THE 'IIDPOINTS & HIGDOWNSTREAM FROM RESTRICTIVE WEIR
POINTS OF A�lO��DERGROvDTNT®v IJ - 15
"_�; 0'525.5S3600' ID STEM PRIMARY OUTFALL J�,.,�a�,•. � /- f � // %
�/ !
\
ff
-
o�
�m
-a- -a- - - - -
- a -g0
9.
o
.0
'S3-
1t00 ¢120 N�VC120I5526.9_3 - 53_44..55
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05% -� 4V
f l
/
'
Cdl)
t
r `
ti i .,M, Kolmy :cn�,.A�' l ) �. ) ,_ nJ, , 1� �,i' _ _ ,ten cam,._-._rn nn.Jl-.�.•E[, 'rat,. . - n. �jr.-..t, Jn,.: .. 1 l,.Jt_ ,., L_ _ _ c-n }� �<. n .._.
1?_0" 5NV, 527.0(J' 0120" INV. 525.50'
2Hi % \
Q.00 Lt= ,� `'� "�. � '��80 I61��
2
i Y Q / 26.00 LF 0 0.5 0 - - - I
6.00 LE C) 0.% 5,o 0.5%
;rt
r��.��_�
. �
(�
a
t 12Q" INV, 527.06' \ / 2HQ QO LF „ 0 _ 1
/ 0120 INV. 525.66 � i - �
0+00
/ I
P 9I LF
:
-
i
m
v
v
m
a y a
a
g a b . -
1, v
p m
�, v
m 9 RCP
{�a ✓�
y�q
rs. i
a
1r v p
a,
1`1_ III RCP f
-= --- I - _ . EXISTING 24" CMP 8L 42" DIP TO BE
/ PROPOSED-u DERGROO)UI D fi'
EXIST
---- _. PROPOSEDDLEVAT IJ� f3" PIPE i L(i�i}15 WITH
- ---
1
DE-C'E=NTIO3NSY:�T�iV1TO3 ��--.-". ''--_ _ .s-\._. _ _. _...._..._. -. ELEVATED .. _ ._ ��-- _-- - __ ..-__._..� AHAIQI➢�CJi?1 vV-��I TI.1r PI"�O�POisrL)C3I�1�?T�
_ a _... MORE SIGNIFICANT & LESS FIRE DENT D�! ENTTC)NI sc NEW CL. III RCP OUTFALL
r _
TTENUATE RUNOFF CAD a r - _ cf
STORM EVENTS TO SAFELY BYPA� THE --- _ _-. -- - -- _ PIPE. CONTRACTOR SHALL FILL THE 24 p
FROM THIS DEVELOPN0IEN,IT, - - - ---
-_ CII�JDr�I'��aRC�IJND, DETENTION S f.� I EM - .___ _ ___ PIPES 3 �.�:.
_ _ - � 4� �'_P_.S U+1_T�I F�_-�VitABLE FILL � CAP �
r E E �� -
__
tH� �NDS WATERTIGHT f1IT'I-I tOJNCIRETEa,
PUBLIC ROAD �� SIDEWALK ` / %`..�"� � �
6+00
TO SERVE AS ACCESS TO
SVIM FACILITY �. %� � �° III R'
i
_
ggyy'\
CONTRACTOR SHALL CALL'THE COUNTY lNSP1=O'',FOR
i
8, ENGINEERING iDEPAe'eTMEN, I' 24 s tI5UR5 BEFORE -
- ANY ANTICIPATED CONSTRUCTION ACTIVITIES FOR
THE BiMPS. THIS IS INCLUSIVE OF WHEN THE -
UNDERGROUND DETENTION SYSTEM SUBGRA'DE IS -
READY FOR PIPE CONSTRUCTION, BUT BEFORE
STONE BEDDING IS INSTALLED.
FACILITY IN- SPECTT,1 INS DU.RJ T'G CONSTIR?, CTTION:
CONSTRUCTION INSPECTIONS ARE CRITICALTO ENSURE THE UNDERGROUND RETENTION SYSTEM 15 PROPERLY BUILT. BECAUSE THE TIMING OF THE INSTALLATION IS DICTATED BY
THE CONTRACTOR, THE CONTRACTOR SHALL BE RESPONSIBLE FOR CONTACTING THE ENGINEER, COUNTY INSPECTOR AND CONTECH REPRESENTATIVE PRIOR TO INSTALLATION.
CONTECH, OR AN EQUIVALENT PIPE MANUFACTURER, SHALL BE CONTACTED WELL AHEAD OF THE CONSTRUCTION START DATE TO ENSURE ADEQUATE LEAD TIME FOR MATERIALS
AND DELIVERY. MULTIPLE SITE VISITS AND INSPECTIONS ARE REQUIRED TO BE SCHEDULED BY THE CONTRACTOR, WITH THE ENGINEER, COUNTY INSPECTOR & PIPE MANUFACTURER,
DURING THE. FOLLOWING STAGES OF THE UNDERGROUND DETENTION SYSTEM CONSTRUCTION PROCESS:
a. PRE -CONSTRUCTION MEETING
2. INITIAL SITE PREPARATION (INCLUDING INSTALLATION OF PROJECT E&S CONTROLS)
3. EXCAVATION/GRADING (E.G., INTERIM/FINAL ELEVATIONS).
4. WHEN THE DETENTION PIPE SUBGRADE IS READY FOR PIPE CONSTRUCTION, HUT BEFORE STONE BEDDING IS INSTALLED.
S. AFTER STONC BEDDING IS PLACED AND COMPACTED, BUT PRIOR TO PIPE INSTALLATION.
6. ATTHE TIME OF THE PIPE INSTALLATION.
7. AFTER PIPE INSTALLATION, BUT PRIOR TO PLACING FILL. OVEd THE SYSTEM.
B. FINAL INSPECTION (DEVELOP A PUNCH LIST FOR FACILITY ACCEPTANCE)
PLEASE ALSO SEE. BELOW, UNDER FACILITY MAINTENANCE, FOR REQUIRED INSPECTIONS AFTER INSTALLATION IS COMPLETE.
FACILITY INSPECTIONS & b INTENAIjCE AT~T_FR t ONSTLRUCTION:
THE FOLLOWING MAINTENANCE TASKS SHALL BE PERFORMED BY THE CONTRACTOR IN THE FIRST YEAR FOLLOWING THE INSTALLATION OF THE UNDERGROUND DETENTION SYSTEM.
�
2.. FOR THE FIRST YEAR FOLLOWING CONSTRUCTION, THE SITE SHALL BE INSPECTED 8Y THE CONTRACTOR QUARTERLY AND AFTER 5TOft4A EVENTS THAT EXCEED 1J2 INCH OF
RAINFALL.
2. THE CONTRACTOR SHALL LOOT{ FOR BARE OR ERODING AREAS IN THE CONTRIBUTING DRAINAGE AREA AND AROUND THE UNDERGROUND DETENTION SYSTEM AND MAKE SURE
THEY ARE IMMEDIATELY STABILIZED. CONTRACTOR SHALL SPOT RESEED AS NECESSARY AND ENSURE ADEQUATE SITE COVERAGE Is PROVIDED WITHIN THE FIRST YEAR. AT THE
t3UAR TIRE f INSPECTIONS, AND AFTER EACH RAINFALL zVeCd�'�-11�1 EXCESS OF="t THE CONTRACTOR SHALL PERFORM L P ^ OR ANNUAL MAINTENANCE TASKS DESCRIBED
, , L TI-!� CAN BELOW IN 43.
AFTER THE FIRST YEARTHE OWNER SHALL PERFORMFOLLOW-UP INSPETINSANNUAL_ ,AAND REACtSlGNIFIGAVTRIINFALLEVENT:
3. A SPRING MAINTENANCE INSPECTION AND CLEANUP SHALL BE CONDUCTED ANNUALLY. THE MAINTENANCE PROGRAM FOR THE UNIDERGROUND DETENTION SYSTEM SHALL
INCLUDE CLEANING ITANNUA_LY Or ii5H D e15 _ SEDIMENT AND ENSURING THE NT:GRITY OF T-E �_IR PLATE, PACK OU7FA_L & INFLOW PIPES.
ES. THE 01NER
r
SHALL ENSURE THE SYSTEM IS OPERATING AS ➢NTENdE:D AND IS NOT CLOGGED OR DAMAGED. THE OWNER SHALL IMMEDIATELY CLEAN I?: REPAIR THE FACILITY tiS NECESSARY AND
SHALL PAY SPECIAL ATTENTION TO THE INLET AND OUTLET LOCATIONS. THE ACCESS MANHOLES SHALL BE.. USED FOR INSPECTION AND MAINTENANCE.
550
i
-- - -
___IJN
�➢� a R42lSND DE`''`'fllTI & -
_ - ACTOR SHALL INSTALL A 14 1_01\1G, 1B-DEEP VDO 1 O C-Al RIPRAP O)UTIET BYPASS SYSTEM TO OJUTFALL INTO
_ - ea
PROTECTION LOCATED BETWEE Tr%� PROPOSED OUTI'A_L AND THE f;,S_S(I�I� LIMITS . N�Vt -PIPE �� CI�,AL�,-_E�Ir N �2 PIPE
n }
4
OF",=-IJBt�i(; R?GHT-O�' itJl-1(, AS `�$°1Ci}r11N. DL1ile�:I PR£�-r�`I�i�(Sr1Al_L 8E �EY'aT/A`I ®lo iCi INCLUDE A V®OT `iD; �9f91u2
GRADE WITH A FILTER FABRIC I.3NDERLAYMI_'NT KEYED INTO THE EXISTING GROUND
A MINIMUM OF " AT T ' r j�3D ALOING THE PER` METER, EDGES O)r E7LTI-R FABRIC 7+ 5 0-'
SHALL OVERLAP A MINIMUM OF 12 WIDTH AT PIPE OUTLET SHALL BE 103
MINIMUM, AND WIDTH AT EXISTING CHANNEL SHALL BE 9"10'. _ -._ --
- -
DRAIAIAGE DESCRIPTIONS
S` R.
PIPE I NIFOPPW-i
I Old
INLET I NFORMATI
ON
NO.
DIA.
IE"I.)
LENGTH
(fg.)
SLOPE
%)
INVERT
III
INVERT
OUT
MATERIAL
INLET TYPE
GUrb
Type
SLOT
LENGTH
NINON
ELEVATION
COMMENTS
105
I\ ODI FI ED I!/ H-1
536.00
VDOT STD. I3-1 REO'D
105
35
1 116.83
0,67%
523.97
523.19
R(_,P3
--
10�i
DI-3I3
��6
�
r
�31.�37
-
VD�T�TD. IS 1 RECYD
103
35
126-75
0.67%
523.09
522.24
PO:;P3
102
DI-313
CC-6
61
529.33
VDOT STD" IS-1 RE °D
101
4i
04.39
O.67°l°
522,14
521.71
PC-P3
m
OUTLET PROTECTION
NOTE:
'��___
�
^r r
➢ - r
P C
PROPOSED ;i C�
t
INSPECTION & MAINTENANCE.
�
S J1H ,a ST,-i(f�5 F Ii
/
f'FPROTECTION
O3 P"4CT,1R SHALL
C NIT
LOCATED BETWEEN
T '
�NSTA�L,A 14 LONG,
THE PROPOSED OI
,p DE
u3 CJLF
, .P VDO
-p'rALL AND THE F)C•
C�. AlAI RIPI3,AP OUTLET
STING LIMITS OF PJPITC
e�
RIGHT-OF-WAY, AS
SHOWN. OUTLET P
OTECTION SHALL 13E
FLAT/AT 0% GRe
DE WITH A FILTER
h
FABRIC UNEDERLAY
fiENT KEYED INTO
HE EXISTING GPO L
`®
ND A MINIMUM OF
IJ ` s
" AT THE ENDS �
A_ON � THE PERIM
ALONG
'OUTLET 'HAL
r E E
_T_IR, EDGES OF FI
H I
_IR FABRIC SHALL
OVERLAP
LRLAP A M_N11/Ill
1"
OF _2 , WIDTH A
-
I--
PIPE_Ei'
PIP- OUTI S
E Ii
�_ _ I I�iL.I�IUN
0 �
T n .
AND JEl..DTH �� I'
e . ,T
ISTING CHANNEL �
I �E 9
di_L B- �,_-0 ,
\545
PROPOSED
GRADE �� R,�
1
EXISTING
> >
MODIFIED VDOT MH-i
I
'
..0
GRADE
_
cn > �
I
TP - 36-00
�`�
�
r ➢
-
5�t 0
'10-
Y r PEAK DESIGN
VISI =537 70
--
VER
_--. --
INV II`� 524 07 TO m ----
INV III 52- 5O TO
� �
II�I�I lid 532.50
--------------
(
STI�:`TCi�.
VDO`T DI-.
--
L=6'
------ -- ---- ---
� � 0
�q (D 0
I, � i � �
--1 't f,,
1 H" COVER
OVER IUGD
SYSTEM, TYP.
`
-
(TEMP. ESC PHASE
INV 0, UT- 523.9 TO -1-04
�T _
TP� 3-
�
Il 11 ��I
L � � CA L
1 �
.�, T� �00
9
I _!. I kp
� f3
�
--.__-
'Tz
_
INV :
P `,G�f �
3 9
.. ..
�v d 2 � _
535
LFlW
TCL'I JI�i-IRPLATE AI-
I,0 DRAIN THE fS
POIN T
_ a
SEE IDETAI. ON THIS SHEET,
2-yr PEAK
DESIGNd-'�
I
�
S 3''
WSE=
1-Yr PEAK
V�tSE
533,2.2 f
DESIGN--
32.
532.2fi
PROPOSED LOWER 015'
UNDERGROUND P� DETENTION
F��ff
_
"�`�-"=�
"O
- --WSE
----- -
--
SY�,JTEN1 rl3,i�IAIXY OI:JTFALL
PRIMARY UF!
" ", DPE
FUTURE STORMS W/ER
�f.a3 Lr 9 �/I�
CROSSING, -.' MIN
SEPARATION REO IRED-
4u
�.. _
R
525
_ -
UVE: R PLATE INVERT-
525.5(1-�\
525
UPROPOSDETENTIO
012OJ°
Ea
x hY � �T
CMP UND % Tol
,•
U.�O i TO
I�ID AT THE TIME OF TEMPORARY
SEDIMENT BAST
ATTEND ATE RUNOFF
,M
CAUSED FROM
THIS #1'S REMOVAL &TH!E INS
UNDERGjROUND DI TENTIOIjILSYSTEM,
LLATION OF THE
THE
- -
DEVELOPMENT. TI,rDTAL
CMP LENWGT,
=892,0'0'
CONTRACTOR SHALL PLUG
OPENING WATERTIGHT r45R
S rR. 106's CL,
TriC TEMPORARY 27.OD L
III RCP _
J 6"
� 7 91 L I II
OJ.� ,�
/
• �
3�
2 w =
CL. III RCS
_
t
Li
U F VI
520
F)IH" CMP BARREL (IN�1
.
532.50), �
TT�a<s�� LF �i O.'a71A
15
LF (D,�i7�✓(J
=
TISTI G �
20
-1-I_`
_
�.��_E�I�TiI�I_�
OW
LO2U�1=��a
_
52`1,71
td
€J I'\
D{3
6 c I
�aA To
tie fF3 L 3
€el f �i
fy� 00
110 4 0
0
d I
e3
v5'
K�
➢'
J {35
a
LO Oi ct) 0)
ce) IT m
f� 11) f4l
_*.f'' M. en TAT
O ti 63
(y) 'f'�T IN
t t I-,,
f r'T N
f� od
M t�l
c
a`1 CV
'
V1
L� Ltd
Ln ?,.i)
L) Ln In L9
Ln fiT 9 Ln
FM
Ln Lf i -0 n
Ln
-n Lill
IV) I~f5
iI 1 I TJ 1 i I ;M
5+50 6-1"00 6+50
PROFILE SCALES
-0= d(HORIZONTAL)
PROPOSED ELEVATED 018" PIPE ALLOWS
MORE SIGNIFICANT & LESS FREQUENT
STCIRM EVENTS TO SAFELY BYPASS THE
UNDERGROUND (DETENTION SYSTEM
540 I 540
EXISTING I PT,
GRADE t
:.8" I-IDPI 50
°30.gL," L F 4'T.-,)6%
PROPOSED 0120" CMP--
UNDERGROUND DETENTION
SYSTEM @ 0.50% TO
ATTENUATE RUNOFF CAUSED
FROM THIS DEVELOPMENT.
TOTAL CMP LENGTH=892.00' 525
-PROP S_i7
•�• C� vDG�T
.2" CL. III PCP
PROPOSED
GRADE
35
STIR:j o5
MODIFIED VDOT MH---i
530 TP=536.00
" INV IN: 524-07 TO -cI8
INV IN529.5o TO
INV IN:532.50
(TEMP. ESC PHASE 11 PIPE)
525 INV OUT: 523.97TO h04
AT THE TIME Or r PORARY SEDIMENT 6AS.N
#1's REMOVAL L& THE INSTALLATION OF THE
UNDERGROUND (DETENTION SYSTEM, THE
CONTRACTOR SHALL PLUG; STIR. 106's
OPENIING UE/ATERTIOIHT FOR T"!IE TEsMPOIRARY
520 520 018" CMP BARREL (INV. 532.59),
S Pt3
EMERGENCY BYPASS
PROPOSED STORNIWJATER MANAGEMENT NARRATIVE FOR THE PROJECT:
U. b
SUMMARY:
THE PROPOSED STORMW/ATER MANAGEMENT PLAN CONiIPL1ES WITH PART NIB REQUIREMENTS. SUMMARIES OF THIS COMPLIANCE CAN BE
VIEWED IN THIS VSMP SET AND IN THE ACCOMPANYING STORN6IWATER MANAGEMENT CALCULATIONS PACKET.
STORMWATER QUANTITY:
CURRE,HTL_YALL OF THE EXISTING IMPERVIOUS AND PERVIOUS AREAS WITHIN THE PROJECT LIMITS EXIT THE PROPERTY UNTREATED. THE
PROPOISED PLAN WILL CHANGE THIS
AND WILL CAPTURE THE MAJORITY OF T's-IEn PROPOSED IMPROVEMENTS.'THE CAPTURE AND
DETENTION OF THESE IMPROVEMENTS IS REPRESENTED BY POST -DEVELOPMENT SUBAREA A, WHERE AN UNDERGROUND DETENTION
SYSTENVI ATTENUATES THE RUNOFF, THIS SUBAREA IS USED TO CON FIRM CHANJNEL AND FLOOD PROTE IONI C0�IPLIANCE, CHANNNEL
PROTE(OTION IS DIET VIA 9VAC25-870-66 SECTION B.3,a, FLOOD PROTECTION IS MEN VIA 9VAC25-870-66 SECTION C.2.0.
�°
b i
Y� T - ,� DEPICTED TErO ON THE STOi3i">IT#!lAT,R MANAGEMENT THE I T
SUBAREA B .. .P C C9 ACIa KNIT PI�aV IaO� F B TO NIrIR➢�1 I H_ CAPACITY OF THE NEW 42' Cm, .,II RCP irl>-�T
IS PROPOSEDTO REPLACE THE EXISTING 42" DIP CULVERT. PLEASE NOTE, THE ANALYSIS OF THE PROPOSED 42" CL, III RCP IS
CONSERVATIVE BECAUSE IT ASSUMES THE: PEAS OUTFLOWS FROM SUBAREAS A ,'-k B OCCUR SIMULTANEOUSLY WHEN THEY WERE
SUMMED. THIS SUMMED FLOW) WAS USED TO CHECK THE PIPE's CAPACITY IN THE ATTACHED STORM SEWER CALCULATIONS AND
IS CONSERVATIVE BECAUSE THE PEAK OUTFLOWS FOR SUBAREAS A & B OCCUR AT DIFFERENT TIMES, PLEASE ALSO DOTE, THE
2-YEAR VELOCITY IS NOT EROSIVE ON THE CONCRETE PIPE AND THE 10 YEAR STORM IS CONTAINED WITHIN THE STORM SEWER
NETWORK.
PLEASE SEETHE HE ATTACHED S TORMWATLR MANAGEMENTCALCULATIONS PACKET FOR ADDITIONAL DETAILS AILS PERTAINING TO THE
STORI'v11WATER QUANTITY COMPLIANCE.
STORlA/[l V,'1I'E R QUALITY:
r
r r
r
t t � Z V 1
THE C _Ilw11T'S Or HL STCiRN11l� AT_FI IUALIT f ANA-YSN FO r I S R THIS PROJECT IS D�rINE_J E3Y THE _IIJINT.a OF [>IST(,itY'�ANC_. Tt"IIS CO°3NIO�FT i5
CONSISTENT WITH PRIOR COUNTY ENGINEERING DIRECTION. THE DEQ VIRGINIA RUNOFF REDUCTION METHOD SPREADSHEET FOR NEW
DEVELOPMENTS WAS USED IN THE WATER OUA_ITf ANALYSIS, THE PROPOSEDPLAN REQUIRES A TOTAL PHOSP
HOROUS RCNfiO1v;AI_ RATE
OF :!3.rra Ibs/yr. S TORMW/ATER QUALITY COMPLIANCE IS NiIET FOR THIS DEVELOPMENT THROUGH TWO BEST MANAGEMENT PRACTICES.
r
THE BEST MANAGEMENT PRACTICE i10E OF INSTALLING TI-IRLC (3) LEVEL 11 DRY SEiVAt,ES IS IMPLEMENTED ONSIT E, THE (-,JT) I r1RCE PROPOSED
DRY S1IVALES PROVIDE A REMOVAL OF 6.68 Ibs/yr, THE REMAINING BALANCE OF 9.33 Ibs/yr WILL BE SATISFIED THROUGH THE BEST
MANAGENIENT PRACTICE OF PURCHASING NUTRIENT CREDITS.
0:1120 ➢ WEIR 'LATE DETAIL
NOTE: -- ..
WEIR PLATE. TO BE DOI-TED °. �'f AL L: I-°9 �e
SE -All ELD TO DLTLNITION SYSTENII
WITH WATERTIGHT CONNECTIONS. � 4.36'
OVERFLOW WEIR IS HYDRAULICALLY
EQUIVALENT TO ANORIFICE WITH AN��
APPROX. DIAMETER OF ` 1.6,42"
MANUFACTURE / INSTALL SITS (6) ORD" MIND -FLOW ORIFICES r�
IN THE STEEL PLATE (INVERT ELEVATION 532.{�5°)
INSTALL `(`RASH RACKS ON ALL
ORIFICES,TYP. SEE THIS r
S _ �aHLET
FOR DETAIL, OR EQUIVALENT. �
Mi-'WN U FACTURE / INSTALL ONE (a) 04. 5" LOW-FLOVI
ORIFIICE IN THE STEEL, PLATE AT THE LOW POINT OF THE
DETENTION SYSTEM (INVERT ELEVATIONS 52.5.5o')
EL EV =535.5o°
(TOP OF PIPE.
ELEV.=535.od
ELEV.=>v- ,o
LO
INFORCED a2 GA.
Ln
STEEL PLATE Q"
EI Ear =525 50'
(BOTTOM OF PIPES)
010
S00TT `R. (' OLL TNS�
T-) No. 35791
ONIAL,?`A�
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12 1/8"
BAND GASKET
HUGGER
/— FLAT
SINGLE BAR,
BOLT AND STRAP (38,9S)
FLAT GASKET
171 , 77
,1 '1
CONNECTION DETAIL
(SBBS)
2 2/3 xl/2" RE -ROLLED END HEL-COR PIPE
GENERAL NOTES
1. JOINT IS TO BE ASSEMBLED PER AASHTOBRIDGE CONSTRUCTION SPECIFICATION SEC 26.4.2.4.
2. BAND MATERIAL.' S AND/OR COATING CAN VARY BY LOCATIOIN. CON TACT YOUR CONTECH REPRESENTATIVE FOR AVfit! ABILI TY
3. BANDS ARE SHAPED TO MATCH THE PIPE -ARCH WHEN] APPLICABLE.
4° BANDSARE NORMALLY FURN%IED AS FOLLOWS:
12" THRU 48" ,I -PIECE`
54" THRU 96'2PIECES
fl 102"THRU 144"3PIECES
5, BAND FAST!,--�IIERS 'ARE A`! WITH SPOT IJAIELDS, RIVETS OR [--IAND VVELDS.
6. ALL CMP IS EROLLED TO HAVE ANNULAR END CORRUGATION'S OF 2 2/3'xl/2"
7. DIMENSIONS ARE SUBJECT TO MANUFACTURING TOLERANCES.
8. ORDER SHALL DESIGNATE GASKET OPTION, IF REQUIRED (SEE DETAILS ABOVE).
H-12 HUGGER BAND DETAIL
NOT T -0 SCCAUE-�
20 MIL PE
IMPERMTEEABLE
LINER OVER
TOP OF PIPE LIMITS OF
(IF REQUIRED)
RECLIIR '
7-i
U-1
EL
FOUNDATION 2
BACKF
L
, 3 SEE Ty AL
6� TYPICAL
'r LL - �- r-8 A D� TAIL
- NOTES
TYPICAL SECTION VIEW
ALE NOTE.- IF -SALTING AGENTS FOR 81,40WAND ICE REMOVAL ARE USED ON OR NFj-NR THE
PROJE CT, A GVOMEMBRANE SARRIER I8 RECOMMENDED WITH THE SYSTEM. 'THE
3EONIEMBRANE LINER IS INTENDED TO HELP PRC)TECT THE SYSTEM FROM THE
POTENTIAL ADVERSE EFFECTS THAT MAY RESULT FROM A CHANGE IN THE
SURROUNDI
NG ING ENVIRONMFN'T OVER A PERIOD OF TIME. PLEASE REF ER TO THE
CORRUGATED METAL PIPE DETENTION DESIGN GUIDE FOR ADDITIONAL lt-,IFORMATION.
TRENCH CONDITION EMBANKMENT CONDITION —
_E
DEBRI, CM-1
U JUDEU, WE$ Of AAS HTO L RRU BRID, OF, D ES IGN (5 F(C' 12) AND CONSTRU, CTION (SEC 26)
BACKFILL RFQUIREMENTS FOLLOW THE G
I IIIITINMAUM TPENCH WIDTH MUSTALLOW ROOD0 FOR PROPER COMPACTION OF HAUNCH MATERIALS UINDER THE PIPE.
THE MINIMUM TRENCH WIDTH (12.6.6. 1):
PIPE �e; 12": D + 16"
PIPE > 12": 1.5D + 12"
la MINIMUM EMBANKMENT WIDTH (IN FEET) FOR INITIAL FILL ENVELOPE (12,6.6.2):
PIPE �:24": 3.013
PIPE241' - 144": D + 4'0"
PIPE > 144": D + 110"0"
-ILI TO SUPPORT TH AD A G PON T (2 2).
2 THE FOUNDATION UNDER T1 E. PIPE AND SIDE BACKr L 311ALL BE ADEQUATE r 10 s c7rim U 1 fas�
3 BEDDING MATERIAL SHALL BE A RELATIVELY LOOSE MATERIAL, THAT 18 ROUGHLY SHAPED TO FIT THE BOTTOM OF THE PIPE, AND A
MINIMUM OF TWICE THE CORRUGATION DEPTH 11h] THICKPIESS, WITH THE MJ-0' IMUAA PARTICLE SIZE OF ONE-HALF OF THE CORRUGATION
DEPTH (26.3.8.1,26.65.3),,
4 CORRUGATED STEEL PIPE (CSP I HEL-COR).
C'E D- INTO PLACE TO ALLOW FOR PROPER COMPACTION (26.5.4).
5 HAUNCH ZONE MATERIAL SHALL BE HAAND SHOVELED OR SHOVEL 3LI1
,JIBE T TO MEET AASHTCI A-1-A-2 OR A-3 CLASSIFICATION, OR APPROVED EQUAL, COMPACTED TO 090%
5a INITIAL GACKFILL FOR PIPE DINIEN'
STANDARD PROCTOR (T 99). UlAXIMUNI PARTICLE SIZE NOTDO EXCEED 3- (12.4.1,2).,0MLL LIFT8 PLACED IN A CONTROLLED MANNEn R-. IT is
RECOMMENDED THAT LIFTS NOT EXCEED AN 8" UNCOMPACTiElD LIFT HEIGHT TO PREVENIT UNEVI;:NLOADING-, AND THE LESS ER OF IK"
'THE DIAM ETER OR 74" AS THE NLAXIMUM DIFFERENTIAL 8 )IDE-TO-810 e- (2,6.5A),
6 INITIAIL BACKFILL ✓ABOVE PIPE MAY INCLUDE ROAD BASE IMATERIAL (AND RIGID PAVEMENT IF APPLICABLF-). SEE TABLE ABOVE.
6a TOTAL HEIGHT OF COMPACTED COVER FOR CONVENTIONAL HIGH�-AfA\Y LOADS IS MEASURED FROM TOP OF PIPE TO ROTTOM OF
FLEXIBLr:-� RAVI MENT ORTOP OF RIGID PAVEMENT
7 FINAL BACKFILL MATERIAL SELECTION AND COMPACTION RE,(_),UfRElMENTS SHALL FOLLOW` THE PROJECT PLANS AND SPECIFICATIONS
PEP THE ENGINEER OF RECORD (26.5,4.1),
Narm
A; GEOTEXTILE SHOULD BE CONSIDERED FOR USE TO PREVENT SOIL MIGRATION INTO VARYING SOIL TYPES (PROJECT ENGINEPER).
10 FOR MULTIPLE BARREL INSTALLATIONS T'rg�. RECOMIYENDED STANDARD SPACING BETIJ11EEN PARALLEL PIPE RUNS SHALL BE PIPE D!A,/2-
BUT NO LESS THAN 12", OR 36- FOR PIPLE DIAMETERS 72-2-AND LARGER.
CONTACT YOUR FOR NONSTANDARD SPACING (TABLE C12.6.7-1).
TYPICAL BACKFILL DETAIL
NOTTO SCALE
yqnpl,.Il
1/4' HOPE p:alt,"pti.O
KUT Wf�
Yy),"r A, kirol pl"M i;t
and", V-4, r0i,te
by pl—til
PLSAS 'lLa'
P 0 Ni x Qdii
IN P77-8171872
TEMPORARY COVER FOR
CONSTRUCTION LOADS
FINISHED
HEIGHT OF GRADE
COVERY�
CONSTRUCTION LOADS
FOR TEMPORARY CONSTRUCTION VEHICLE LOADS, AN EXTRA AMOUNT OF COMPACTED COVER MAY BE REQUIRED OVER
THE TOP OF THE PIPE. THF, HEEIGHT-OF-COVER SHALL. MEET THE MININIUM REQUIREMENTS SHOWN IN THE TABLE BELOW.
'T THE USE OF HEAVY CONSTRUC, 10'N EQUIPMENT NECESSITATES GREATER PROTECTION FOR THE PIPE THAN FINISHED
GRADE COVER MINIMUNIS FOR NORMAL HIGHWAY TRAFFIC.
AXLE LOADS
PIPE SPAN, (kips)
INCHES
_�T6_5 750---7-5- - -
MINIMUM COVER (FT)
1242 2.3 2>5 3.0 3.0
4-3-72 3.0 3.0 3.5 4.0
78-120 3.0 3.5 4.0 4.0
126-144 35 4.0 4.5 4.5
'MINIMUM COMER MAY VARY, DEFENDING ON LOCAL CONDITIONS, THE CONTRACTOR MUST PROVIDE THE ADDITIONAL
COVER REOUIRED TO AVOID DAMAGE TO THE PIPE. MINIMUM COVER IS MEASURED FROM THE TOP OF THE PIPE TO
THE TOP OF THE MAINTAINED CONSTRUCTION ROADWAY SU R,'FACE
CUE V lok" 00
A
36110, ik/jAx HS-25 ACCESS CASTING
1141TH GR�bE RINGS AS RFOUIRED, TO REINFORCING TABLE
B PP E 0VIDEDAND INSTALLED BY 'BEiNRING
CONTRACTOR, MAY BE TOP MOUNTED
CHIP (AS SHOWN) OR RECESSED. 0 cmp A 80 REINFORCING PRESSURE
PROTECTION Ul RISER
GRADL
VARIES
— — — — — — — — — — — —
RIM]FINISHED_ (PSF)
SLAB
24"
1 4 1 � I .. 1�yg m @ )CLYJ
26,
60
-A - - J.-
I �_ -
CD
#5 @ q-, OCEW 1,670
�V_6 x 4'-6'
_j 4,5 Qv OCEW 9-000
0 CNIP RISER
GASKET MATERIAL x 5' 05 (-§ 8- OCEM] ',,'goo
SUFFICIENT TO PREVENT
SLAB FROM BEARING 0)`4
-6.0 AIP5 @ 8- OCEW 1,490
42" 5 - --6" X,5-V' #r) @ 8- OcEw 1,370
RISER TO BE PROVIDED BY CL
CONTRACTOR, OB 11" TYP. <(
(D 61 0 #5 7- OCEW 1,210
Ck
— 96 7- OCEIA] 1,270
31E5TION VIEW Vx 6,
'p-,
0 A
/ -/\. 0
AZ
4A DIAE)ONAL TRIM _.T
1
#4 DIAGONAL TRINI BAR (TYP. 4 PLACES),
SEE NOTE -1.
BAR (rYP. 4 PLACES), I
---
SEE NOTE I.
17,
7,' 2" COVER
(TYP) Al
I I
F A
C; jq
if
OPENING IN
PROi f ION
R SLAB FO
PROTECTION T
OPEINIRIG IN
ACCESS INTERRUFF'TE-D E
I I I
REPUtCEMENT,
L
SPECIFICATION FOR CORRUGATED STEEL. PIPE -ALUMINIZED TYPE 2 STEEL INTERRUPTED 8 SEE NO E 6.
REPLACEMENT, SEE
L
C�:
n1l
Ile"
SCOPE HANDLING AND ASS B
NCITE &
LY
THIS SPECIFICATION COVERS THE MANUFACTURE AND SHALL BE IN AC GORDANCE wn'H RECOMMENDATIONS OF THE
INSTALLATION OF THE CORRUGATED STEEL PIPE (CSP) DETAILED 11\1 NATIONAL CORRUGATED STEEL PIPE ASSOCIATION (NCSPA)
THE PROJECT PLANS.
VNDEFLGROUjjQ E N r 10 �NS` Sj:E_M 1 0 1E S
_U� _(:L A —
INSTALLATION
1
TRASHRACKS SHALL BE INSTALLED ON ALL ORIFICES,
MATERIAL
INCLUDING THOSE LOCATED ALONG THE WEIR PLATE WITHIN
SHALL BE IN ACCORDANCE WITH AASHTO STANDARD
THE UNDERGROUND DETENTION SYSTEM.
THE: ALUMINIZEDTYPE 2 STEEL COILS SHALL CONFORM TO THE SPECIFICATIONS FOR HIGHWAY BRIDGE$, SECTION 26, DIVI810N 11
F.
DErENTION SYSTEM's WEIR PLATE TO BE
APPLICABLE REQUIREMENTS OF I-VNSHTO M2Y4 OR ASTNI A929. OR ASETM A798 AND IN CONFORMANCE WITH THE PROJECT PLANS
PRE —MANUFACTURED AND DELIVERED TO THE SITE. INEIR
AND SPECIFICATIONS. IF THFRE- ARE ANY INCONSISTENCIES OR
PLATE SHALL BE BOLTED TO THE UNDERGROUND DETIEN11ON
pip-C CONFLICTS THE CONTRACTOR SHOULD DISCUSS AND RESOLVE
SYSTEM, OR SIMILARLY FASTENED TO ENSURE 11' HAS A
WITH THE SITE ENGINEER,
SECURE & WATERTIGHT CONNEC TION.
THE CSP SHALL BE MANUFACTURED IN ACCORDANCE WITH THE
3.
ANY RETAINING WALLS AND FOUNDATIONS CONSTRUCTED IN
APPLICABLE REQUIREMENTS OF AASHTO M36 OR ASTAJI A760. THE IT IS ALWAYS THE RESPONSIBILITY OF THE CONTRACTOR TO
TldE VICINITY OF THE UNDrRGROUND DETENTION SYSTEM
'THE
PIPE SIZES, GAGES AND CORRUGATIONS SHALL BE As SHOWN ON FOLLOW 0SHA GLI IDELIMES FOR SAFE PRACTICES.
SHALL BE REVIEWED AND APPROVEED BY STRUCTURAL
THE PROJECT PLANS.
ENGINEER AND A GEOTECHNICAL ENGINEER.
4.
THE ADJACENT PUBLIC ROAD WILL SERME AS ACCESS TO
ALL FABRICATION OF THE PRODUCT SHALL OCCUR WITHIN THE
THE UNDERGROUND DETENTION SYSTEM.
5,
CONTACT COLLINS ENGINEERING (434.293.3719) REGARDING
UNITED STATES.
ANY QUESTIONS CONCERNING THE UNDERGROUND DETENTION
syslElm.
6.
ALL FILL EMBANKMENT MATERIAL SHALL CONSIST
MATECIF RI SPICATION
PREDOMINANTLY OF SOIL AND BE PLACED flN SUCCESSIVE
UNIFORM LAYERS NOT MORE THAN 8 INCHES IN -VdICKNESS
NOT TO SCALE
BEFORE COMPACTION OVER THE ENTIRE AREA 161
ACCORDANCE WITH THE CURRENT VDOT ROAD AND BRIDGE
SPECIFICATIONS.
7.
VDOT STD, IS-1 & CT-1 ARE REQUIRED ON THE
UNDERGROUND DETENTION SYSTEM STRUCTURES, INCLUSIVE
T-4" 2Yj'
OF THE BYPASS STRUCTURES.
B.
ALL FILL SHALL BE PLACED AT 95% COMPACTION AND
TESTED BY A GEOTECHNICAL ENGINEER TO ENSURE
COMPACTION 13 REACHED AND MAINTAINED.
[ ALL STEEL PER
9.
PRIOR TO CONSTRUCTION THE CONTRACTOR SHALL
3/,1- (46) RFBAR CAN BE CUT FLU%l 0 ACT
TEST —DIG AT THE EXISTING INLETS & OUTFALLS TO
_A136
TO OUTSIDE OF RAIL
CONFIRM THE INVERTS AND TO ENSURE THE PROPOSED
(BAR LIENGTH = 163/4") OR BAR CAN
FE
GRADES CAN BE ACH0rD. CONTRACTOR SHALL CONTACT
E X TEND B E Y 0 N D RAIL X2'% V_ FABRICATION TOLERANCE.
COLLINS ENGINEERING OF ANY DISCREPANCIES IN THE
o FLAT BAR AND REBAR: MILL
HOR17ONTAL OR VEERTICAL AL GNMENT PRIOR TO ORDERING
TOLERANCE APPLIES
AND CONSTRUCTION.
3181,
TY
10,
ALL EXCAVATION FOR UNDERGROUND PIPE INSTALLATION
MUST COMPLY WITH OSHA STANDARDS FOR CONSTRUCTION
INDUSTRY (29 CFR PART 19263.
11,
O
CNTRACTOR SHALL PROVIDE ADEQUATE NONE SACKFILL
21, TYP.
WHOLE vvI �3/4` REBAR RUNG,W
FOR THE UNDERGROUND DETENTION SYSTEM PIPES IN
CENTER TO CENTER
ACCORDANCE WITH VDOT AND THE MANUFACTURER'S
ELD REBAR TO RUNG ON
RUNG SPACING
REQUIREMENTS.
OUTSIDE OF STEEL 1=1AIL
0
L
,PIPE 0
PLAN
F R (3) NIT
48"0 to 90"0 FITTING REINFORCEMENT
MAY BE REQUIRED BASELD ON HEIGHT OF
COVER AND LIVE LOAD CONDITION
TYPICAL MANWAY DETAIL
N 0 T 70--S, 6 KE E
X FLAT BAR SIDE RAIL
PLAN SIDE
NOTES:
1. LADDER3 GAN BE MADE IN 20'-0" STANDARD LENGTHS AND CUT TO FIT
2, ALL MATERIAL TO MEET ASTM A36
3. LADDER TO BE HOT DIPPED GALVANIZED PER ASTM AA23 AFTER
FABRICATION IS COMPLETE
STANDARD LADDER DETAIL
NOT TO SCALE
PART O. HALAGVL16
PROVIDE MINIMUM OF 4 ATTACHMENT
ANGLES (2 ON EITHER SIDE OF LADDER RAIL)
TO CONNECT LADDER TO RISER EXTENSION
RISER vil LADDER AND STEPS
IF EXTEhISION IS REQUIRED
RISERvil LADDER
AND STEPS
MAINLINE GMP
23/3 x Y2, 5 x 1, 3 x 1, ETC.
NOTE:
THIS DRAIA11Wq IS WrTENDED TO APPLY TO LADDERS
INSTALLEED IN RISERS HAIVING A DIAMETER OF 30"' OR
LARGER. DUE TO SPACE CONSTRAINTS AND LIMITED
ACCESJBILITY, THE PRACTICALITY AND SUIT NOILITY OF
UTILIZING RISERS SMAILER THAN 30' DIAMETER
ANDIOR IINCORPORNTHNG LADDERS IN THESE SMALILER
DWM ETER RISER'S S SHOULD BE ADDRESSED BY THE
014WIEP, AND PROJECT E:NGINEER
LW x 3" x Y,,,' x IWLONG AT T4'
TO SPACING1 LONG LEG
PROJECT OUT, WELD TOP
1,-6" AND BOTTOM OF 3" LEG TO EACH
MAX.. CORRUGATION CREST
(THESE ANGLES SHOULD BE USED
FOR LARGER DIAMETER
Hi Hi MAINLINES WHERE ADDITIONAL
STEPS ARE NEEDED)
l STANDARD STANDARD
R E I N F 0 RCl N G REINFORCING
, ,
SEE TjV8LE SEE TABILE
'TION PLA-,N VIEW ROUND OP
NOTES:
1. DESIGN IN ACCORDANCE INITH fiASHT0, I-Ith
EDITION AND ACI 3%
2, DESIGN LOAA 0 F182&
3. EAffTH COVER = TfvlfiX.
4. CONCRETE STRENGTH =- 4,000,psi
5. REINFORCING STEEL = ASTMI A616, GRADE 60.
6. PROVIDE ADDITIONAL REINFORCING AROUND
OPENINGS P.OUAL TO THE BARS INTERRUPTED,
HALF EACH SIDE, ADDITIONAL BARS TO BE: IN THE
SAME PLANE.
"NOTE: WHEN RISER EEC ENSIONS
ARE USED, THE PLANT SHOULD
CUT 3" FROM THE SIDE RALS AS
SHOlJVN
"3" FROM BOTTOM OF LADDER
RAIL TO RISER JOINT
JI
F_
RAIL TO RISER JOIN
*3" FROM TOP OF LADDER
LADDER RAILS AND RUNGS
2) Yes" FILLET WELDS I" LONG
NT E AN(,' ATTACHM
MINIMUM OF 4 ANGLES P
TION, (2 EACH SIDE LADDER SEC
LADDER) VNIAX. SPACI
V _E R T I CAI
RISERLADDER DETAIL
NOT TO S_ZiEF_
6" FROM RUNG TO
RISER JOINT
FROM RUNG TO
RISER JOINT
AWN
RISER NORMALLY CMP
WITH 2?%"x, Y2"
CORRUGATIONS
(4) &" FILLET WELDS
FROM EACH ANGLE
TO
CORRUGATION CREST
(2 WELD EACH' SIDE)
_/3, x 3" x Y,
BY2- LONG
SQUARE OPTION PLAN VIEW
7, TRIM OPENING WITH DIAEGIONA-L 441 BARS, EXTEND ARSA
MINIMUM OF 12" BEYOND OPENING, BEND BARS AS RE-)UIRED
TO MAINTAIN BAR COVER.
8, PROTECTION SL,8 AND ALL MATERIALS TO BE PROVIDED AND
INSTALLED BY CONTRACTOR.
9. DETAIL DESIGIN BEY DELTA VWGiNEE-IRS, ARCHITECTS,'kNO I -AND
SURVEYORS, END -WELL, NY.
V 7413 MR
AT
(44))/16" FILLF T WELDS F ROM
FACH ANGLE CORRUGA`
CREST (2 WELDS EACH S
(4) L3" x 3" x
5W LONG
(2) Y4" FILLET WELDv
I" LONG FRONI EACH ANGLE
TO LADDER RAIL
LADDER RAILS
PLAN
A
D,
(4) Yj 6`'FILLET WELDS
FROM EACH ANGLE TO
CORRUGATION CREST
(2 WELDS, EACH SIDE) ++_
Ak
-13" x si, x y1c",
LONG
ELEVATION
LADur:"R
AND PUi
CA
T
An-
SWSCOTT COLLIN=
0 No. 35791 1��l
0
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to
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PROPOSED 6" T�M_L DRY SWALE SHE
C
DAM. CHECK DAM Si
HALL INCLUDE A
WIDE x 6"DEEP KiOTCHE:D WEIR
CENTERED ON THE CHECK DAM. CHE(
DAM TO EXTEND TO DRY SWALE SID
SLOPES. SEE SHEET a?, FOR DETAILS
ONE (3) PROPOSED G" TALL WEIR TO CREATE A MAXIMUM DRY SWALE
PONDING DEPTH OF 6" BEFORE SPILLOVER. WEIR TO BE CONSTRUCTED
OF CONCRETE GABION BASKETS FILLED WITH STOhIE OR PRESSURE
TREATED STACKED LUMBER. WEIR TO BE FASTENED WITH RE -BAR. REW
SHALL BE 44 EPDXY COATED AND EXTEND A MINIMUM OF i8" BELOW TI
TOP SURFACE LAYER FOR ANCHORING. WEIR TO BE BURIFD & EXTENIDE
A MINIMUM OF ?-'HORIZONTALLY INTO THE SIDES OF THEE TRAPEZOID,'
SWALE. WEIR TO ALSO BE BURIED uR EXTENDED VERTICALLY A MINIMUI
OE 6,, BELOW THE TRAPEZOIDAL SWALE's TOP SURFACE ELEVATION.
PROPOSED YARD DRAIN INLET,--
DOWNSTREAM FROM THE CHECK
DAM, TO BE FLUSH WITH THE TOP
SURFACE ELEVATION TO ENSURE A
NUVAMUNI PONDiNG DEPTH OF 6".
597.80 CH
598.30 F
SEE SHEET 13 FOR DRY SWALE SUBSURFACE -
COMPOSITION/ TYPICAL SECTION
__j
PROPOSED DRY SWALF TO HAVE -
MAXIMUNI SIDE SLOPES OF 3:1,, WITH
A S'WIDE UPLAND PERVIOUS STRIP
V/ITH SLOPES < SIM, AS SHOWN. TYP.
PROPOSED GRAVEL. FLOW SPREADER
PRE-TREATMENT. SIDE: FIGURE-,io.6 ON
SHEET 23 FOR DETJML.
SEE SHEET 13 FOR DRY SWALE SUBSURFACE
COMPOSITION/ TYPICAL SECTION
PROPOSED -,,_0WIDE BY 6" DEEP STONE -
SPLASH APRON TO BE INSTALLED
IMMEDIATELY DOWNSTREAM FROM WEIR
STONE TO BE 2,"-3" DIAMETER AND BE
UNDERLAIN BY NON -WOVEN FILTER FABRII
'J
UJI UA
0 C9
IA-1 L1_.
565
610
K_
�K
60
E X I S T I ING
GRADE
610
605j
R
4E
D 600
L
ILI yrDEIGN
HGL, TY-
600
A
I
a
7 _1_kbPbtED
Tii
595
10=yrF IEAK
GRADE
595
L
I M
BACKWATER
DEPTH (9.12'
6" �CHEDUL_
---------- -
590
-,,PROPOSED
40 P
U\IDERDRi.kIN,
C PERFORATED
590�
0 Cn
I,
6 CD
QD
0
C)
0
kd
10+50 1+00 1+50
Y SWALE NO".
PROPOSED 4" SCHEDULE 40
PVC SOLID PIPE CLEANOUT.
SEE FIGURE 9-13.1 ON
SHEET 13 FOR DETAIL.
-PROPOSED DRY SWALE TO HAVE
MAXIMUM SIDE E SLOPES OF 311, WITH
A WIDE UPLAND PERVIOUS STRIP
WITH SLOPES < 5%, AS SHOWN. TYP.
PROPOSED 2'WIDE BY 6" DEEP
STONE SPLASH APRON TO BE
INSTALLED IMMEDIATELY
- DOWNsTREAM FROM WEIR.
STONE TO BE !"-3" DIAMETER
AND BE UNDERLAIN BY
NON -WOVEN FILTER FABRIC.
PROPOSED aj?" TALL DRY SWALE CHECK DAM,
CHECK DAM SHALL INCLUDE A 3'V1IDE x 6"DEEP
NOTCHED WEIR CENTERED ON THE CHECK DAM.
CHECK DAM TO EXTEND TO DRY SWALE SIDE
SLOPES. SEE SHEET 1.3 FOR DETAILS,
1 565
IEXISTIN(
GRADE
560
PROPOSED
GRADE
Oyr DESIGN
G L, T Y
J�
560
E
Fi
555
5
'Wi
6
Z
550
-10-V
EAK
5
0
BACKIIV
DEPTH=O.,30'
TER
PROPO ED 4"
PVC S LID
�CHEEDUI
40--)
:�H_mu
- 9 PIP
SEE I
SEE
SHEET 13 FOR
CL EA11
DETAIL.
ON
....... �,PFOPOS.
1 40 P�C
UNDERDRAIN
ED_6,'___.
PERFORATED
I
t L
545
545
M
C�j
So
(D
r,
LO
L0
LO
Ln
Vo
L0
CD
Y) Qo
LO
Lo
- -----------
110
&0
-
Lo
Lf)
Lo
Y)
Lo
'0+50 2+00 1 1+00 14-50
DRY SWALE NO.2
560
� 5 5 5
PROPOSED 1_2" TALL DRY SWALE CHECK DAM.
CHECK DAM SHALL INCLUDE A 1o'VJIDE,(6`DEEP
NOTCHED WEIR CENTERED ON THE CHECK DAM.
CHECK DAM TO EXTEND TO DRY SWALE SIDE
SLOPES. SEE .SHEET -_13 FOR DETAILS,
10yr DESIGN HGL, TYP.
550'
PROPOSED DRY SWALE TO HAVE MAXIMUM SIDE -,;--t�
SLOPES OF WITH A 5'WIDE UPLAND PERVIOUS
C-MID ITLI CA n0l=' AC CA_W%1A1 _ry
560
DIRYSWALE#1 LANDSCAPING SCHEDULE
SYM BOTANICAL COMMON NAME
SWM FACILITY
QUANTITY ICOVERAGE(sO
83H RU BS
HAMANIELIA VIRGINIANA
WITCH HAZEL 2 GAL.
5
JIG
I LEX GLABRA
INKBERRY
2 (3 AL.
4
VD
VIBURNUM DENTATUM
SOUTHERN ARROWWOOD
2 GAL.
3
TREES
BETULA NIGRA
RIVER BIRCH
2-1/2" CAL
i
NYSSA SYLVATI CA
BLACK GUM
1-1/2" CAL,
i
--------------
LEVEL JI DRY SWALE 41 DESIGN REQUIREMENTS.
Treatment Volume (Per VRRI[VI Calculations) 41.9 cf
Minimum Treatment Volume Required 461 cf
* Minimum Surface Area Required (Tv/Storage Depth) 278 sf
Surface Area Provided 1,036 sf
* Area based off 3'1VIix at 25% porosity, 3" pea gravel at 2% porosity, 12"
stone at 40% porosity uR 6" of ponding at 100% porosity
STORMWATER MANAGEMENT FACILITY GRADING
Elevation
(ft)
Area of Dry
Swale
Footprint (sf)
Volume
(cf)
594.75
1,036
0
595
1,036
259
596
1,036
11,295
Excavation Zone
597
1,036
2,331
598
1,036
3,367
599
1,036
4,403
Ponding Zone
600
1,84-0
326
DRY SW ALE LANDSCAPING SCHEDULE
BOTANIOAL DOMINION NAME SZE SWM FACILITY
SYNIJ QUANTIT'�_ C VERAGE(sr�
22
SHRUBS
HV
HAIVIAMELIS VIRGINIANA
WITCH HAZEL
2 GAL,
4
I rG
V VJ
I LEX GLABRA
VIBURNUM DENTATUM
INKBERRY
SOUTHERN ARROWWOOD
2 GAL.
2 GAL..
4
T REE E S
BN
BETULA NIGRA
RIVER BIRCH
2" CAL-
2
JUNIPERUS VIRGINIANA
EASTERN RED CEDAR
11-1/2" CAL,
)NE (-i) PROPOSED a2" TALL WEIR TO CREATE A MAXIMUM DRY
WALE PONDING DEPTH OF?2" BEFORE SPILLOVER. WEIR TO BE
--ONSTRUCTED OF CONCRETE, GABION BASKETS FILLED WITH
;ToNE: OR PRESSURE TREATED STACKED LUMBER. WEIR TO BE
STENED WITH REBAR. REBAR SHALL BE #4 EPDXY COATED AND
,TEND A MINIMUM OF 18" BELOW THE TOP SURFACE LAYER FOR
NCHORING. WEIR TO BE BURIED & EXTENDED A MINIMUM OF?-'
IORIZONTALLY INTO THE SIDES OF THE TRAPEZOIDAL SWALE.
,IR 1*0 ALSO BE BURIED & EXTENDED VERTICALLY A MINIMUM OF
BELOW THE TRAPEZOIDAL SWALE's TOP SURFACE ELEVATION.
54.67 RIM
- PROPOSED YARD DRAIN INLET, DOWNSTREAM
FROM THE CHECK DAM, TO BE FLUSH WITH THE
TOP SURFACE ELEVATION TO ENSURE A
MAXIMUM PONDING DEPTH OFi2".
LEVEL III DRY SWALE #2 DESIGN& REQUIREMENTS -
Treatment Volume (Per VRRM Calculations) 4,601 cf
Minimum Treatment Volume Required 5,061 Cf
* Minimum Surf ace Area Required (Tv/Storage Depth) 2,349 sf
Surface Area Provided 3,528 sf
* Area based off 3' Mix at 25% porrosity, 3" pea gravel at 2% porosity, 12"
stone at 40% porosity & 12" of po nding at 100% porosity
STORMWATER MANAGEMENT FACILITY GRADING
Elevation
(ft)
Area of Dry
Swale
Footprint (sf)
Volume
(cf)
552,75
3,528
0
553
3,52-0
838 2
554
3,52-0
4,410
Exca\1a$i®n Zone
555
3,528
7,93-0
556
3,528
11,466
557
3,528
14,994
1 Ponding Zone
558
4,728
19,107
DRY SWALE #3 LA N DSCA PIN G SCHEDULE
SYM BOTANICAL COMMON NAME
SZE SWM FACILITY
QUANTITY JT,0_VERAGE (4)
SI-11 RU SS
H V
HAMAMELIS VIRG-INIANA
WITCH HAZEL
2 GAL,
3
ILEX GLABRA
INKBERRY
2 GAL.
3
VID
VIBURNUM DENTATUM
SOUTHERN ARRIOWWOOD
2 GAL,
3
TREES
BN
I NIGRA
RIVER BIRCH
2" CAL.
I
NYSSASYLVATICA
BLACK GUM
2-1/2`CAL.
I
EXISTIN ONE (i) PROPOSED -12" TALL WEIR TO CREATE A MAXIMUM DRY
GRADE -1? 11 SWALE PONDING DEPTH OF -" BEFORE SPILLOVER. WEIR TO BE
CONSTRUCTED OF CONCRETE, GABION BASKETS FILLED WITH STONE
OR PRESSURE TREATED STACKED LUMBER. WEIR TO BE FASTENED
555 WITH REBAR. REBAR SHALL BER4 EPDXY COATED AND EXTEND A
- MINIMUM OF i8" BELOW THE TOP SURFACE LAYER FOR ANCHORING.
WEIR TO BE BURIED EXTENDED A MINIMUM OF 2' HORIZONTAL LY
INTO THE SIDES OF THE TRAPEZOIDAL SWALE. WEIR TO ALSO BE
10-)r PEAK BURIED8, EXTENDED VERTICALLY A MINIMUM OF 6" BELOW THE
TRAPEZOIDAL SWALE's TOP SURFACE ELEVATION.
DEPIH=0.18'
550
PROPOSED
GRADE
PROPOSED YARD DRAIN INLET, DOWNSTREAM
FROM THE CHECK DAM, TO BE FLUSH wiTH
SEE SHEET 13 FOR DRY SWALE SUBSURFACE
_547.35__R I M THE TOP SURFACE ELEVATION TO ENSURE A
COMPOSITION/ TYPICAL SECTION
55MAXIMUM POINIDING DEPTH OF i2".
4,'
545
PROPOSED 2'WIDE BY 6" DEEP STONE
SPLASH APRON TO BE INSTALLED
PROPOSED 4" SCHEDULE 40-,--
IMMEDIATELY DOWNSTREAM FROM WEIR.
PVC SOLID PIPE CLEANOUT.
SEE FIGURE 9-B.1 ON f ROPOSRD 6" S HEDULE STONIE TO BE a!'-3" DIAMETER AND BE
SHEET 13 FOR DETAIL. 40 PV(, PERFO ATED UNDERLAIN BY NON -WOVEN FILTER FABRIC.
540 540
UNDERDRA N.
C0
Ld 0
Ld N-)
LO LD 4
4-0 LO
®r LO LO !0
LLA t _2
PROFILE SCALES 0+50 1+00
gag =5"VERTICAL)
50°(HORJZONTAQ
DRY SWALE
LEVEL 11 DRY SWALE #3DESIGN & REQUIREMENTS.
'Treatment Volume (Per VRRM Calculations) 2,614 cf
Minimum Treatment Volume Required 2,952 cf
* Minimum Surface Area Required (Tv/Storage Depth) 1,370 sf
Surface Area Provided 1,477 sf
"k Area based off 3' Mix at 25% porosity, 3" pea gravel at 2% porosity, 12"
stone at 40% porosity & 12" of ponding at 100% porosity
STORIVIWATER MANAGEMENT FACILITY GRADING
Elevation
(ft)
Area of Dry
Swale
Footprint (sf)
Volume
(cf)
54335
1,477
0
544
1,477
369
545
1,477
1,846
546
1,477
3,323
Excavation Zone
547
1,477
4,800
548
1,477
6,277
549
2,062
8,039
PondingZone
550
2,669
10,398
NOTE: ALL PROPOSED LANDSCAPING WITHIN THE SWM
Sit ALES CAN WITHSTAND A MAXIMUM OF 12" PONDING.
LEVEL 11 DRY SWALE #--t DETAIL, SCALE i."=20,
fCf?, Q
DRY SWALE 9a RUNOFF ENTERS
SHEET FLOW. SEE FIGURE 10.4b ON
SHEET 13 FOR PRETREATMENT.
PROPOSED VARIABLE WIDTH
r NIT
5WIVI EASEMENT. EASEMENT-
WiTH'PROPERTY
LINES AT PLACES.
PROPERTY-
-7-
(3) PROPOSED 6" TALL WEIR TO CREATE A MAMMUM DRY
SWALE PONDING DEPTH OF 6" BEFORE SPILLOVER. WEIR TO
BE CONSTRUCTED OF CONCRETE, GABION BV NSKETS A LLED
WITH STONE OR PRESSURE TREATED STACKED LUMBER.
WEIR TO BE FASTENED WITH REBAR, REBAR SHALL BE -444
EPDXY COATED AND EXTEND A MINIMUM OF i8" BELOW THE
TOP SURFACE LAYER FOR ANCHORING. WEIR TO BE BURIED &
EXTENDED A MINIMUM OF 2' HORIZONTALLY INTO THE SIDES
OF THE TRAPEZOIDAL SWALE. WEIR TO ALSO BE BURIED
EXTENDED VERTICALLY A MINIMUM OF 6" BELOW THE
TRAPEZOIDAL SWALE's TOP SURFACE ELEVATION.
PROPOSED 2'WI0E BY 6" DEEP
STONE SPLASH APRON TO BE
INSTALLED IMMEDIATELY JV W
DOWNSTREAM FROM WEIR.
STONE TO DE a"-3" DIAMETER
AND BE UNDERLAIN BY
- ------ NON -WOVEN FILTER FABRIC.
VD (3:
PROPOSED YARD DRAIN INLET,
DOWNSTREAM FROM THE CHECK
DAM, TO BE FLUSH WITH THE TOP
brnpervi)us Area SummarV- Din j Swale #1
Proposed Buildings 2,200 sf
17-
-PROPOSD6SCEPVEUL0C PERFORATED UNDERDRAIN.
POSED RETAINING WALL
PROPOSED DRY SWALE TO HAVE
MAXIMUM SIDE SLOPES OF 3.nL, WITH
A 5'WIDE UPLAND PERVIOUS STRIP
WITH SLOPES 50A, AS SHOWN.
HV (5) -PROPOSED GRASS OR
MULCH GIROUNDCOVER
IN VARIABLE WIDTH
TRAPEZOIDAL DRY
SWALE
vjvw
59 9. 0 0j
PROPOSED 4" SCHEDULE 4-o PVC
9 SOLID PIPE CLEANOUT, SEE FIGURE
9-13nL ON SHEET 23 FOR DETAIL.
IG (4)
PROPOSED G" TALL DRY SWALE CHECK
SURFACE ELEVATION TO ENSURE A
MAXIMUM PONDING DEPTH OF 6"
10 20 40
597.80 RIM
---U+c
LEVEL 11 DRY SWALE #2 DETAIL- SCALE in-"=20,
DAM. CHECK DAM SHALL INCLUDE AS'
WIDE x 6"DEEP NOTCHED WEIR
CENTERED ON THE CHECK DAM. CHECK
DAM TO EXTEND TO DRY SWALE SIDE SLOPES. SEE SHEET a3 FOR DETAILS.
PROPOSED GRADED SIDEWALK •
EXTENDING TO PUBLIC RNI TO SERVE
AS ACCESS TO THE SWM FACILITY
H
SCOTT R. COLLINS
No. 35791
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12
DRYS)AIALE 0ONSTRUCTIM NOTES:
FACILTITIV- 1131-A\NTING SPECIFICAA,TIONS�
't. ROOTSTOCK OF THE PLANT MATERIAL SHALL BE KEPT MOIST DURING TRANSPORT FROM THE SOURCE TO THE JOB SITE AND UNTIL PLANTED.
2� INALLS OF PLANTING PIT SHALL BE DUG SO THATTHEY ARE VERTICAL.
3. THE DIAMETER OF THE PLANTING PIT MUST BEA MINIMUM OF SIX INCHES (6!') LARGER THAN THE DIAMETER OF THE BALL OF THE TREE.
4. THE PLANTING PITSNALLBEDEEP ENOUGH TOALLOV11 I/SOFTHE OVERALL DIMENSION OF THE ROOTBALLTO BEABOVE GRADE. LOOSESOILAT I`HE BOTTOM OFTHE PITSHALLBE
TAMPED BY HAND.
5. THE PLANT SHALL BE REMOVED FROM THE CONTAINER AND PLACED IN THE PLANTING PI T BY LIFTING AND CARRYING THE PLANT BY ITS BALL (NEEVER LIFT BY BRANCHES OR TRUINK).
6. SET THE PLANT STRAIGHT AND IN THE CENTER OF THE PIT SO THAT APPROXIMATELY 1/8 OF THE DIAMETER OF THE ROOT BALL IS ABOVE THE FINAL GRADE.
7� BACXFILL PLANTING PIT VVITH EXISTING SOIL.
8. MAKE SURE PLANT REMAINS STRAIGHT DURING BACI(FILLIHG PROCEDURE.
9, NEVER COVER THE TOP OF THE 13ALL WITH SOIL. NIOUNT SOIL AROUND THE EXPOSED BALL.
10� TREES SHALL BE BRACED BY USING 2'BY TWHITE OAK STAKES, STAKES SHALL BE PLACED PARALLELTO WALKWAYS AND BUILDINGS. STAKES ARE. TO BE EQUALLY SPACED ON THE
OUTSIDE OF THE TREE BALL. UTILIZING HOSE AND WIRE THE TREE IS TO BE BRACED BY THE STAKES.
11, BECAUSE OF THE HIGH LEVELS OF NUTRIENTS IN STORMWATER RUNOFF TO BE TAFATED,DRY SWALE PLANTS SHOULD AOTREQUIRE CHEMICAL FERTILIZATION.
, E, OUIR-EMENTS-,
!-QQNTjRA�C'r0R R (9-F-F PLAJV7� 9CI-I-EDEff-E FOR , PT-AjVf 3P-EC-T-A-3)
1. THE CONTRACTOR SHALL BE RESPONSIBLE FOR LAYOUT OF ALL WORK COVERED UNDER THESE PUOIS.
-
ASIDE BY ITS CONTENTS; HOWEVER ANY NOTES OR SPECIFICATIONS ON THE PW45 SHALL SUPERSEDE TI-105E OUTLINED IN THE SPECIFICATIONS MANUAL (COPIES ARE AVAILA[ILE FOR
2. LANDSCAPE CONTRACTOR SHALL REFER TO THE STANDARDIZED LANDSCAPE SPECIFICATIONS FOR THE STATE OF VIRGINIA FOR ADDITIONAL INFORMATION. THE CONTRACTOR SHALL
A FEE FROM THE VIRGHNIA CHAPTER OF THE AMERICAN SOCIETY OF LANDSCAPE ARCHITECTS, VIRGIN IA NURSERYMEN'S ASSOCIATION, INC. AND THE VIRGINIA SOCIETY OF LANDSCAPE
DESIGNERS).
3. ALL PLANT MATERIAL 9-IALL MEET THE MININIUM SPECIFICATIONS AND STANDARDS DESCRIBED I'll THE CURRENT ISSUE OF THE AMERICAN STANDARD FOR NURSERY STOCK,
PUBLISHED BY THE AMERICAN ASSOCIATION OF NURSERYMEN, 1250 STREET, N91, SUITE 500, WASHINGTON, DC 20005.
4. THE CONTRACTOR SHALL VERIFY ALL DIMENSIONS IN THE FIELD AND NOTIFY THE DESIGNER OF ANY VARIANCE FROM THE PLAN.
5. THE LANDSCAPE CONTRACTOR IS RESPONSIBLE FOR VERIFYING THE LOCATION OF ANY ONSITE UTILITIES (CALLMISS UTILITY 1-8-00-552-7001 BEFORE ANY EXCAVATION).
6. REFER TO THE APPROVED PLANS FOR ANY DETAILED SITE INFOPNIATION.
7. ALL WORK %]ALL BE COORDINATED WITH OTHER PARTIES.
& PLANTS WILL BE PREPARED FOR SHIPMENT IN A NIANNER THAT WILL NOT CAUSE DAMAGE To THE BARK, BUDS, BRANCHES, STEMS, OR OVERALL SHAPE OF THE STOCK. CONTAINER
EE
GROWN PLANTS WILL BE TRANSPORTED IN THE CONTAINERS IN WHICH THEY HAVE RE N GROWN.
Lands��MA,g
o 16----q
,--rat N ot-e S-4
AND
-
__
_�jene ----
EMBANKMENT NOTES:
9. ALL PLANT MATER)AL, UNLESS OTHERVVISE SPECIFIED, SHALL BE UNIFORMLY MANCHED AND HAVE A VIGOROUS ROOT SYSTEM. PLANT MATERIAL SHALL BE HEALTHY, VIGOROUS,
FREE FROM DEFECTS, DECAY, DISEASES, INSECT PEST EGGS, AND ALL FORNIS OF INFESTATION. ALL PLANTIM' ATERIAL SHALL BE FRESH, FREE FROM TRANSPLANT SHOCK OR VISIBLE WILT -
- —
Landscape Specificatiolims-
AFTER AN INVESTIGATION OF THE SITE's SOILS, SITE VISITS AND AN ANALYSIS OFTHE SURVEYED TOPOGRAPHY, THE APPLICANT
PIJANTS DEEMED UNHEALTHY WILL OF REJECTED,
HAS PROVIDED A COMPREHENSIVE EMBANKMENT DESIGN THAT DOES NOT NEED A GECITFECHNICAL STUDY AT THIS TIME. SUCH
10� ALL CONTAINER STOCK SHALL HAVE BEEN PROPAGATED IN A CONTAINER LONG ENOUGH FORTHE ROOTSYSTEM TO HAVE DEVELOPED SUFFICIENTLY TO HOLD ITS SOIL. CONTAI NER
.11
Tbe 1,01lowing speclucations are the mir�nnmx st-andards that are, acceptable for the installawdon of the plantmaterial.
-
IS THE CASE DUE TO THE PRECAUTIONARY EMBANKMENT DESIGNS PROPOSED. A SUMMARY OF THE EMBANKMENT DESIGN
STOCK WITH POORLY DEVELOPED ROOT SYSTEMS WILL NOT BE ACCEPTED.
11. PLANTS NOT INSTALLED ON THE DAY OF ARRIVAL ON SITE SHALL BE STORED AND PROTECTED BY THE CONTAINER. OUTSIDE STORAGE AREAS WILL BE SHADED AND PROTECTED FROM
I
1. T? ponsible for adhering to the constm'dion sequence outlined ori this page for the installation o'dhe dry swale
he contractor shall be rcs-
REQUIREMENTSARE LISTED BELOW, MANDATING THE CONTRACTOR MEETTHESE REQUIREMENTSATAMINIMUM.
THE WIND AND SUN. PLANTS STORED ON SITE SHALL BE PROTECTED FRONT ANY DRYING ATALLTINIFS BY COVERING THE BALLS OR ROOTS WITH MOIST SAWDUST, WET BURLAP,
WOOD CHIPS, SHREDDED PEAT MOSS, OR
�
laridscapiti& '17he Conbractgr shall also be rcsponsibk for locating all existing i-m-demaround utilities prior to broginning construction. Any
DARK, OTHER SIMILAR MULCHING MATERIAL.
�;5
THE EMBANKMENTS SHALL HAVE A COMPACTED CLAY CORE WITH A CUTOFF TRENCH & BE IN ACCORDANCE WITH THE DETAILS
22. THE OWN ER RESERVES THE RIG HT TO SUBSTITUTE PLANT MAT] ERIAL TYPE, SIZE AND/011 QUANTITY. ANY SUBSTITUTIONS MUST BE APPROVED BY THE DESIGNER& COUNTY ENGINEER
planting conflict arising ftom �,-Xisting utility locations shall be brought to the attention of the Ovm-er.
SHOWN ON THIS SHEET. BERMS AND SPILLWAYS SHALL BE STABILIZED WITH EC--3 MATTING,& THE REMAINING DISTURBED
PRIOR TO INSTALLATION.
13. MINOR FIELD ADJUSTMENTS MAY BE NECESSARY DUE TO SITE CONDITIONS (EX: ROOTBALL AND UTILITY CONFLICT). IMAJOR ADJUSTMENTS MUST BE APPROVED BYTHE DESIGNER AND
2. The Co-ritractor -shall be respowible for providing positive drairtage at 1% --aiinkrium- in all planted areas,
SLOPES SHALL BE STABILIZED WITH EC-2 MATTING. ALL BERM FILL MATERIAL SHALL CONSIST OF IVIL, CL, SC OR GC SOILS & BE
COUNTY ENGINEER PRIOR TO INSTALLATION.
FREVE OF WOOD, ROOTS, ROCKS OR ANY 01-HER NON COjVIPA(7FING SOIL, COMPACTED FILL SHALL BE PROCTOR MfAxIMUM DRY
14. NO PLANTING SHALL Or -CUR WHIN THE SOIL 15 FROZEN.
3. The Contractor -shall w�rify plant count from- the plan, and shall provide an d install all plant rnz.1ftrials sh-own on the ,approved plan. The plant
DENsiTYASTIVID698AND HAVE A MINIMUM OF 95% OF MAXINIUM DRYDENSITYAND 2% OF OPTIMUM MOISTURE CONTENT.
15. PLANT MATERIAL SHALL BE PLACED IN EXISTING SOIL WHEN POSSIBLE WITH EACH PLAN71NG PIT EXCAVATED TO A SIZE SUFFICIENT TO CONTAIN THE ENTIRE ROOT BALL OR ROOT MASS,
schedule, provided is for the Contrx actor's referemcc only; quantities shall be verified from the approved phlm�
ALL FILL MATERIAL AND CONSTRUCTION SHALL BE APPROVED BY AN ON51TE GEOTECHNICAL ENGINEER PRESENT DURING THE
VATHO UT CRAM, PI NG ROOT STOCK.
*16. THE CONTRACTOR SHALL MAINTAIN A ONE (1) CALENDAR YEAR 90% CARE AND REPLACEMENT WARRANTY FOR ALL PLANTINGS. THE PERIOD OF: CARE AND REPLACEMENT SHALL BEGIN
AFTER INSPECTION AND APPROVAL OF THE COMPLETE INSTALLATION OF ALL PLANTS AND CONTINUE FOR ONE CALENDAR YEAR.
4� The, Cuntractor shall guarantee all platit materials for I year from the date of planting.
CONSTRUCTION OF THE EMBANKMENTS AND FILL AREAS.
VA DEQ STORKWATEP DESIGN SPIE-CIFICATMIN INTPOUKTIOtt., -APPEINDIX A,, E-ARTHIE-IN EMBA'"MAENT
17. THE CONTRACTOR IS RESPONSIBLE FOR RENIOVAL AND DISPOSAL OF TRASH AND DEBRIS WIIHINT THE LIMITS OF THE PLANTING ON A DAILY BASIS.
13. THE CONTRACTOR WILL NOT BE RESPONSIBLE FOR PLANT MATERIAL THAT HAS BEEN DAMAGED BY VANDALISM, FIRE, OR OTHER ACTIVITIES BEYOND THE CONTRACTOR'S CONTROL.
plant material with prior approval ftom- County --Enginleering.
S. The Owner or bis designated agent shall approve any cbamges bi -
19. T14E CONTRACTOR SHALL CONTACT THE WATER RESOURCES I NSPECTOR AN D COLLINS ENGIN EERING 24 HOURS PRIOR TO BACKFILLING THE DRY SWALE AND REQUEST AN I NSPECTION
ANDAPPROVALOFTHE UNDERDRAINS INS ANDTFIF SOIL MI,
N X.
'
-rial shall be balled and burlapped, or contamer grown and shall be vvell fomod, vigorous, grm'lfing specimens with growth
6. All plant matf,
)TAL1-'\TION
90. THE DRY SWALE PLANTING AREAS SHALL BE COVERED WITH HEAVY STRAW MULCH TO A DEPTH OF 3" IMMEDIATELY AFTER PLANTING.
thj-p ' o - -urioas iiisects and diseases, -
,, ical of the vaiiety specified and Three fi-or - inj
SECTION A-9-. TYPIC.41-- C-TR-A-F11fl1C,-A-T DETAILS
FACILJTY CONSTARUCTTOINT
7. All brees and shrubs shall be installed as indicafted on the approved landscI'mpe pl,am
---------------
---- Mmm�
3.. DRY 5111-A LE AREAS SHALL BE FULLY PROTECTED BY SILT FENCE OR CONSTRUCTION FENCING, PARTICULARLY IF THEY WILL RELY ON INFILTRATION. IDEALLY, DRY SWALES
SHALL REMAIN OUTSIDE THE LIMIT OF DISTURBANCE DURING CONSTRUCTION TO PREVENT SOIL. COMPACTION BY HEAVY EQUIPMENT. DRY SWALE LOCATIONS IMAY BE USED
AS SMALL SEDIMENT TRAPS OR BASINS DURING CONSTRUCTICII 4 THOUGH. IFTHEFAOLITY IS USED ASA SEDIMENT TRAP OR BASIN, THE DRY SWALE MUST CONTAIN AN
-
UNDERDRAIN. THE FACILITY MUST ALSO BE CLEANED FREE OF DEBRIS, STABILIZED AND ANY STRUCTURES PROPOSED TO REMAIN, REMOVED OR CONVERTED MUST BE
INSPECTED FOR PROPER FUNCTIO'NALITY.
2. CONSTRUCTION OF THE DRY SWALE MAY ONLY BEGIN AFTER THE ENTIRE CONTRIBUTING DRAINAGE AREA HAS BEEN STABILIZED WITH VEGETATION. IT MAY BE'NECESSARY TO
BLOCK CERTAIN CUR13 OR OTHER INLETS WHILE THE , DRY SWALE IS BEING CONSTRUCTED. THE PROPOSED SITE SHALL BE CHECKED FOR EXUHNG UTILITIES PRIORTOANY
EXCAVATION.
3� THE DESIGNER AND THE INSTALLER SHALL HAVE A PRE-CON15TRUCTIONNIEETING, CHECKING THE BOUNDARIES OFTHE CONTRIBUTING DRAINAGE AREAAND TH E ACTUAL
INLET ELEVATIONS TO ENSURE THEY CONFORM TO THE ORIGhNAL DESIGN. 13ECAUSE THE THMING OF THE INSTALLATION IS DICTATED BY THE CONTRACTOR, THE CONTRACTOR
RTIONS OF THE SITE, IT IS QUITE
SHALL BE RESPONSIBLE FOR CONTACTING THE ENGINEER. SINCE OTHER CONTRACTORS MAY BE RESPONSIBLE FOR CONSTRUCTING POr
COMMON TO FIND SUBTLE DIFFERENCES IN SITE GRADING, DRAINAGE A14D PAVING ELEVATIONS THAT CAN PRODUCE HYDRAULICALLY IMPORTANT DIFFERENCES FORTHE
PROPOSED DRY SWALE. THE GEN' ,RAL CONTRACTOR SHALL CLEARLY COMMUNICATE, INWRITING, ANY PROJECT CHANGES DIETERMINED DURING THE PRE -CONSTRUCTION
MEETING TOTHE INSTALLER AND THE PLAN REVIEWANSPECTION AUTHORITY.
-EMPORARY E&S CONTROLS ARE NEEDED DURING CONSTRUCTION OFTHE DRY SWALE TO DIVERT STORMWATER AWAY FROM THE DRY SWALE UNTIL ITIS COMPLETED.
4. 1
SPECIAL PROTECTION MEASURES SUCH AS EROSION CONTROL FABRICS MAY BE NEEDED TO PROTECT VULNERABLE SIDE SLOPES FROM EROSION DURING TI
-IE CONSTRUCTION
PROCESS,
S. ANY PRE-TREATMENT AREAS SHALL BE EXCAVATED FIRST AND THEN SEALED TO TRAP SEDIM-ENTS.
6. EXCAVATORS OR BACKHOES SHALL WORK FROM THE SIDES TO EXCAVATE THEORY SWALETO ITS APPROPRIATE DESIGN DEPTH AND DIMEINSIONS. EXCAVATING EQUIPMENT
SHALL HAVE SCOOPS WITH ADEQUATE REACH 50 THEY DO NOT HAVE TO SIT INSIDE THE FOOTPRINT OF THE DRY SWALE. CONTRACTORS SHALL USE A CELL CONSTRUCTION
APPROACH IN LARGER DRY SWALES, WHEREBY THE BASIN 15 SPLIT INTO 5oo TO i,000 SQ. FT. TEMPORARY CELLS WITH A ao-iS FOOT EA91-H BRIDGE IN BETWEEN, SOTHAT
CELLS CA14 BE EXCAVATED FROM THE SIDE.
IT MAY BE NECESSARY TO RIP THE BOTTOM SOILS TO A DEPTH OF 6 TO --, 2 INCHES TO; PROMOTE GREATER INFILTRATION. THIS REOUIREMrEi 4TWiLL BE DICTATED BY THE
7-
INSPECTOR, PRIOR TO INSTALLATION OF THE REMAINDER OF THE FACILITY.
I THE SIDES. IFA STONE STORAG
& CONTRACTOR SHALL PLACE GEOTEXTILE FILTER FABRIC ON THE SIDES OF THE DRY SWALE WITH A 6,INCH OVERLAP OI`
- E I-AYER WILL BE USED.
PLACE THE APPROPRIATE DEPTH OF 41 PIPE'
57 STONE ON THE BOTTOM, INSTALL THE PERFORATED UNDERDRAIN PIPE, PACK 457 STONE TO 3 INCHES ABOVE THE UNDERDRAIN ,
';FCHO,'( 2
XIMATELY 3 INCHES ER STONE/PEA GRAVEL AS A FILTER BET'WEEN THE UNDERDRAIN AND THE SOIL MEDIA LAYER. IF NO STONE STORAG LAYERIS
ANDADDAPPRO,
USED, STARTWITH 6 INCHES OF457STONE ON THE BOTTOM, AND PROCFEDWITHTHE LAYERING AS DESCRIBEDABOVE.
DELIVER THE SOIL MEDIA FROM AN APPROVED VENDOR, AND STORE IT ON AN ADJACENT IMPERVIOUS A
9. NREAOR PLASTIC SHEETING. APPLYTHE MEDIAIN i.2-INCH UF-17S UNTIL
THE DESIRED TOP ELEVATION OF THE DRY TWALE IS ACH(D/ED, WAITA FEW DAYS TO CHECK FOR SETTLEMENT, AND ADD ADDITIONAL MEDIA, AS NEEDED, 1-0 ACHIEVE THE
'
DESIGN ELEVATION.
io. PREPAR r- PLAN TING HOLES FOR ANY TREES AND SHRUBS, INSTALL THE VEGETATION, AND WATER ACCORDINGLY, INSTALL ANY TEMPORARY I IRRIGATION AS NEED ED.
n. PLACE THE SURFACE COVER (MULCH, RIVER STONE, GRASS OR TURF), DEPENDING ONTHE DESIGN. IF COIR OR JUTE MATTING WILL BE U5ED IN LIEU OF MULCH, THE MATTING
WILLNEEDTOBE INSTALLED PRIORTO PLANTING (STEP 9), AND HOLES OR SLITS VVILL HAVETO BECUTINTHE MATTING TO INSTALL THE PLANTS,
n. INSTALL THE PLANT MATERIALS AS SHOWN IN THE LANDSCAPING PILAN, AND WATER THEM DURING 14VEEKS OF NO RAIN FOR THE FIRST TWO MONTHS,
i3. CONDUCT THE FINAL COiASTRUCTION INSPECTION, THEN LOG THE GPS COORDINATES FOR EACH DRY SWALE FACILITY AND SUBMITTHEM FOR ENTRY INTO THE LOCAL
MAINTENANCE TRACKING DATABASE.
FA40LITY MWMINTENIAW-M
THE FOLLOWING TASKS SHALL BE PERFORMED BY THE CONTRAcTOR IN THE FIRST YEAR FOLLOWING INSTALLATION FOR EACH DRY SWALE:
t FOR THE FIRST 6 MONTHS FOLLOWING CONSTRUCTION, THE SITE SHALL BE INSPEC-f ED BYTHE CONTRACTOR AT LEAST TWICE AFTER STORM EVENTS THAT EXCEED :112 INCH
OF RAINFALL,
2. THE CONTRACTOR SHALL LOOK FOR BARE OR ERODING AREAS IN THE CONTRIBUTING DRAiNAGE AREACIR AROUNDTHE DRY SWALE,AND MAKE SURE THEYAR!E IMMEDIATELY
STABILIZED,imm GRASS COVER. CONTRACTOR SHALL SPOT RESEED AS NECESSARY.
-INGS.
3. ONE-TIME, SPOT FERTILIZATION MAY BE NEEDED FOR INITIAL PLANT
4. WATERING 15 NEEDED ONCEA WEEK DURING THE FIRST -, MONTHS, ANDTHEiN AS NEEDED DURING THE FIRST GPOWING SEASON (APRIL-OCTOBER), DEPENDING ON RAINFALL.
5, REMOVE Al AD REPLACE DEAD PLANTS. SINCE UP TO 2.o% OFTHE PLANT STOCK MAY DIE OFF IN THE FIRST YEAR, THE CONTRACTOR SHALL BE RESPONSIBLE FOR THE CARE AND
REPLACE M ENT WARRANTY TO HNSU RE THAT VEGETATION IS PROPERLY ESTABLISH ED AN D SURVIVES OUR ING THE FIRST GROWING SEASON FOLLO)MING CONSTRUCTION. THE
TYPICAL THRESHOLDS BE
ELOWWHICH REPLACENIENT 15 REQUIREDARE 9o%SURVIVAL OFPLANT MATERIAL AND i00% SURVIVAL OF TREES�
6. A SPRING MAINTENANCE INSPECTION AND CLEA'NUP SHALL BE CONDUCTED AT EACH DRYSMIAL.E. THE FOLLOWING IS A LIST OFSOME OFTHE KEY MAINTENANCE PROBLEMS
TO LOOK FOR: I
-/5% TO qo% COVER (MULCH PLUS VEGETATIVE COVER) HAS BEEN ACHIEVED IN THE BED, AND MEASURE THE DEPTH OF: THE REMAINING IMULCH.
A� CHECK TO SEE IF
13. CHECK FOR SEDIMENT BUILDUP AT CURB CUTS, PIPE OUTFALLS, GRAVEL DIAPHRAGMS OR PAVEMENT EDGES THAT PREVENT FLOW I -ROM GETTING INTO THiE BED, A, 4D
CHECK FOR OTHER SIGNS OF BYPASSING.
C� CHECK FOR ANYWINTER- OR SALT -KILLED VEGETATION, AND REPLACE IT WITH mRUI,�R SPECIES-
D. NOTE PRESENCE OF ACCUMIJUNTED SAND, SEDIMENT AND TRASH IN ANY PRE-TREATMEi 4TAREAS OR FILTER BEDS, AND REMOVE IT.
E. INSPECT DRY SWAL.E. SIDE SLOPES AND GRASS FILTER STRIPS FOR EVIDENCE OF ANY RILL OR GULLY EROSION, AND REPAIR IT.
F. CHECK THE DRY SWALE BEL) FOR EVIDENCE OF MULCH FLOTATION, E,XCESSWE PONDING, DEAD PLANTS OR CONCENTRATED FLOWS, AND TAKE APPROPRIA�TE REMEDIAL
ACTION,
0. CHECK INFLOW POINTS FOR CLOGGING, AND REMOVEANY SEDIMENT,
1. CHECK FOR CLOGGED OR SLOIN-DRAINI NG SOIL MEDIA, A CRUST FORMED Oil THE TOP LAYER, I NAPPROPRIATE SOIL MEDIA, OR OTHER CAUSES OF INSUFFIOEI,IT FILTERING
FL LOOK FOR AiNY BARE SOIL OR SEDIMENT SOURCES IN THE CONTRisuTiNG DRAINAGE AREA, AND STABILIZE THEM IMMEDIATELY.
TIME, AND RESTORE PROPER FILTRATION CHARACTERISTICS.
F-ACILITV 117N1 SPFE CTION:
—
VA DCR STORMWATER DESIGN SPECIFICATION NO, 10 DRY SWALE$
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DRY SWALE GENERAL NOTES: OF' COMPAC-R-E-0 NO� 57 STONIE
J-7-FR POSED DRY SWALES SHALL PC- LOCATED A 6" SCHEDULE 40 PERFORATED
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MINIMUM OF 10'FROM BUILDINGS WHEN PVC UNDERDRAIN, SPACED PER
INSTALLED DOWN -GRADIENT OF BUILDINGS. PLAN, SLOPED TO DRAIN. CROWN OF ITIE PERFORATED PIPE TO
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MINIMUM OF 50'FROM BUILDINGS WHE�N PERFORATED PIPE TO 6' PLACED ABOVE THE BOTTOM LAYER OF
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CONSTRUCTIO'N INSP ECTIONS ARE CRITICAL TO ENSURE T14E DRY SINALES ARE PROPERLY CO NSTRUCTED AND ESTABLISHED. BECAUSE TI FIE TIMING OF THE I NSTALLYNTI �- I - ------ - -
,
DICTATED BYTHIE CONTRACTOR, THE CONTRACTOR SHALL BE RESPONSIBLE FOR CONTACTING THE ENGINEER AND INSPECTOR PRIOR TO INSTALLATION, MULTIPLE SH VA.0,CRSTORMWATE�RDESIG,tJSPEC,IFICATION N0
10 DRY SWALES 1� '', . VA DCR STORMWATER DESIGN SPECIFICATION NO. 10
11
AND INSPECTIONS ARE REOUIRED TO BE SCHEDULED BY THE CONTRACTOR, WITH THE ENGINEER AND INSPECTOR, DURING THE FOLLOWING STAGES OF THE DRY Sli'VAL --. N-111, I COUNTY OF ALBEMARLE
CONSTRUCTION PROCESS: I '-, - I'll, , 'M-PATITM -1iP -A
6-9. Dx-v Swale 111,ate-ji-iia-1 Sperj�f,jc.atioDj�s I -1 , - , I Df Of C0111MDURiV ENE 00�plre,l
1 "M .V I
4-3� :"-: , -
i. PRE-CONSTRU010H MEETING I . - 110� � ... I
L,.,., t . . . . . , " �', �.
2. INITIAL SITE PREPAMTION (INCLUDING INSTALLATION OF PROJECT E&S CONTROLS) --��- .1 ,
3. EXCAVATION/", ADING (E.G., INTERIMIFINAL ELEVATIONS) Tiable 10.5 outlumes th" Amewdnapte-nall speeifirfat"'ons,for cirmistme,fing rkr--y smi-alm for I TSMP .-I.- I I -
4. DRY SWALE INSTALLATION (E,G., MICROTOPOGRAPHY, SOIL AMENDMENTS, STONE BEDDING, UNDERDRAINS A14D STAKING OF PLANTING ZONES) C onsfiruction Record Drawlings (As-bujit) V -,-,
S. PLANTING PHASE (WITH AN EXPERIENCED LANDSCAPE ARCHITECT PRESENT)
6. FINAL INSPECTION (DEVELOP A PUNCH LIST FOR FACILITY ACCEPTANCE) Table 10-5- Dy ematenai sm-cmications I
PLEASE ALSO SEE ABOVE, UNDER FACILITY MAINTENANCE g6, FOR REQUIRED INSPECTIONS.
k,,VA TE-,F,T3r-RHT CAF-1
CAN TEMAHKIAL M-M
C
'j- F P�"'PF
I .
4"' P.V.0. 8,QFIEVV r,:V`,P
0 P-, P' 6 R A 0 F.
f:_1
, P.V Ei�
4" -0- NONPIE-WO-FIAT 0
G7AN DPIP E
- Vimnc; 9- 8 � I - 4 -"� P� V. C -. ,� ,IrurI,jut DafaY
F, -
M����
-
-
F Media tor-g-rilain (specific
The voijime of -fiffer m, la foir
meqia casnponent composition is
constfut-Alon should be is ,ba sed on
Fifter Medila
d�escrllbad h') Section ls�s of sper,
I 110% of 1-he plan ;jcAurne to accoarri
No. -9:
Tor selding-
composition
*� 85-88% Sand
#1 B-12%sodfines
�& -3-5% qu, a] Mee' orgark matter
11 aff,able P behveen 7 and 23 mglkq.-
The Tnedia shoLdd beceitfied by the
C;EC pre,aler thap ID (Io Me exler)i
�mppfler as meefing the fi,Aeni OT
FRier Media -1 -esbrig
pomsible)
these specificaUons f re -Ter to
S-tormmater tDiesion Spec No. 9-
sloretention, Tor additlorlail som,
-
I
ng edia lnfbmat,�Gn-
simace r-01jer
-ftift,fiver stone, -csetecl biorelention laaw-Iscapirig-
, p Scill
To
. C im lex%,ire, w2h �ess than 5%
4 m h surface deryth cif lemmy san4 or Sandy loa
, -6to D in i c in i -a de, if �
-10 a merfectied pH
f- q corlent, cy � 7, aml ai leac,i 2% orW
—
-n, - Fartheap - im basi-ed oH P14110-ITO N`1288-06.
Use@ appropflatemialeNall ,pficalm
Fabrim shouM have a flow rate of > 125 -gpin/sq- fl. (ASTIAM D4491 ), ;F,ind an
Pkpparerjil Opei�,ffig -Sjze (A03) Em,p-fim-alerel to a US 4 70 oif # 8.0 sieve (ASTIVI
, ,
Filter F-abii-lc
04761)- The geoiexffle A.CJS selection IF, based On the peircerA passing ihe
zi
No- 201D slelie hn"fij Soil slibgrade, mmg F,F;WAj-DrA!ASHT0, selecbon c,fiteria.
, -
�Vpry on the sidet and im mediately,above t�e Lmderdi-slin. t.mfyj For hr,ks;Dotc,
amd celfain k I
� hoking LayeT
C
-'
A 2 to 4 mch layer of sand oy-er a 2 inch iayer ofthoker slone (iypicafly ff8, tin' I
---
44 P hed mrawed) 1,31d
ry.,p�, W@S "above the 11no-p-rdfainst-one-
mne andloT Storage
14 fpch strwle :�;hould be do�ijbft-
,
A 91o,18 inch layer�dependjngomnfhe- i
I
Layer
was,hed and deari, @nd Tree oT all fines
desired de.rpffh org the st-orag e. 1�� ,er)
Ay ,
N.a., VD, QT -967 "'A'Gme').
i
--
6-hm-h figid schefte 40 PVC pipe,
-�
111slaf, pwaurafted pipe for the. ILA,,]
'4xith 346-14-1ch perforafforis(or
fe n -g th o i th e C' nj s wa I e Ce H,
Rj ade m"Irains,
equhlalenl corronaked HIOPE), wPh
_
Use nari-perk.ir;A-ed plDe, as. needled,
R
r-!eanodi,s, and
-318-irnich pe�,Torardorts at 6 iumhes or,
tio conmed! with Vie stonm dfairy
anfsenjaflopi wre-IIS
o,enler;
sy,�feffl-
---
Vegeialjo;l
- ;
I
Plant spede,s as ,as spedfied op. f-h-P IscWsca pll�g pta-�',
I
-
1
Use non -erosive qlatedal sLirD, as wood, gabion-S, r4prap, arconcrete, Aff I
check dams shouOd be ul P,deflwn wil-h fiker kibdc, ant] include weep holes- ) ;
'
(-'hadl( Dams
I
VV00-d esen, for Check dams srfowd cor,O;st of pmsswfe-ireated logs,of
,
Umber-c" fif vra'cer-,ff-e�,�iz,li?,n#�'�ifp,e- spedes -3110 as C;e0ar,.NQrfd10QK-, z!f,i&-M, �p OE2,K I
-
"or lomsL
,
vVilier fio,w vi'dodr-'es didale, use,wow,Ti bicidFqradable ercxslancoptrol
EfosionControlFabm
I gh to Iasi al leamst 2 grow" j
TL,���;,,F,,Icc�l--.TnP-ts(EC',i)3-t;,�312red,oi-ai-ilf-,LencLi vr"!�7� 1
I
seasms,. I
Th,efollowingis a list of information rewfired, ori constructicon record drawings for
.
-61
stor-Inw,raer 1,00119itues (refierence Water Protection Ordinanrwe 17-422^1)�, It is prefe'rable that thie
� �
consfy-won -record. drawing be prepured b-i sompone other than. the designer, 1 ease do, ni)'t
. dl ,
prowid.-P -desismi dr4nvings as con.s.truction record, d-rawings,
I
.
, .-
A. A signed wwl daft-d professional seal of the piparing enginmr of S Ve �
- ur yof
R 7, tc f'a wixte and addivess of the, fi-nn and hndkidluaJ prepa-fing dw, dr-avding o ,- , , fle S, -- el.
8 ri f1w d , hx
_
C. The omst-ructed locc-ation of all items assuciaed with each' facility f 0 r 4�1/
� , and tiv� inspect -ion re-curels i ve
proper dimmnsiomm, niate-rials wind insiallationi, Tk Acms incluidt" but mv not finuwd to t1r,- fol-b-D-wing
,--,
41. Insi,wetion ReTofirds and pholog hsfo-r i- re ,-s �md bvdding, imluding urtderd,-�-ains.
, _,rkp
� p pe L richc
Z Video gipe� In-s1pection fo,r wy p�pes which arc, rt�ot accessible, OT viewatje.
I
- � Upd;atped Loration with stio-coordinales of all fia6lftjc,s�
in to the fac! himes
4. Ve T,viffled. D rM -n- ia give A ve a ina ps f or &e drai nage are, a t re ate-d , ,amd for drian agf-- I ,
.
- sif - - - C r -8 -Im
5. curr t Tph� ,:,r- 11 J topographic survey for all unliblerl. stru num S. Pond -should Jrjar"I ft a "Survey
,. A I 3-T, 0
r
Yf- Ohm,- pon"d bofumm Surveys should vefify pund -volumes mr- oe-r fl-esign. Cor-recti-ons nmay -he rt-quhu--d
- �
kyr alLmt.,iom.s 'tiom., 1-he dLlsig:n. �
j
6. plarjts�, Imead'al and �yjxi,
-1 � Plans a nd, pandril"'es fol� alt cuiverts, Wipes, kjswrs, W#31rs and Dr-
� - ai na,ge- Structows - Displany th e
,,., �
I
.
ifAstalfilled, Itype of drainage structul-esi, en"Ilverypipe mize, weirs, moteriiabs, imalets orend tre-,abmeent(s),
lilljet�f o,Litl�t,tprot�e-v-,t-ion,,-di-,,"-M�r-�itaneilin-�Teil-.P-,'ie-vat'!o- m, fmdfodesign.
ms cu paL
f
81. �",rj,-41117,tl-t,n�fl-,�p-ijL,,: For -signaficant deviation-s ftm dzsig
m, provide stdltd com-puta-filons verihyhng rl,,ali
,�i�,a,--builiconditio,-,i-ise-.q,i-?ivale-nteir',b�-- ,r--a- J-sig -11 -
He th Tide P-,
�
9. Dit,,c-Lillin,f-�s-Dispip�s,�t-tic,c.,oicitjiici'-edio,catioiio,f,qJj.di:t-c-tili--n.e.swid,rJj,3-t�-ne.1s,i--Q--.I.udir,t.g�,yplck�
E,P4 - '
,��Ifio�,
.3,S fj DAP
�_Tjrj I' gsz
- Show all platWdt�axnnwati wil dcad Wok- v-;;fcxw-=s lubdcd. Facifificis md din-wirwag-,
10. Eamment's
-
-rnusa lb� with -in pAaued eass,ements-ProvidL oo,pies of fecorf-terd doem-nents.
I 11. Q, I
mar-tim-Afl, fe-ram or othcor saffi-ety -proviMlong - Display theconstra-cted location of �Wssfldfety
. �
— I
P ,mvis-mm's., ff".11ce's, sa'aff-JIVIL fincladiq thc type, hengffi arm-11 apph-ed =d mauneas�� com,
,�, IT -pued o
= ,
dtsignm
I 2. Ma
-, i ledal 0ayers - biwfiflitc:r Y-Q'Cdl#, sto �- I � �, s � A I , -beWay-5 ad wurcs u x - ffied s
� M aYer5ii,8-Ur i� gustL vcmi Julo
-n i aa 1'. I'
J'i sateg ypes and depihs& ITICludc inswolior, wpor*q, bo-ring or tes-I pit reportsakJ razathals
ocni:,Fkatio�ns. BRiofilit,ert-nedia must be. wi approved swic -mix.
,
11 A,Awes��- roads - show '-location ofacctFi,s mad's', sufface. treall,ce,n4 ,drjanagr-�L, etc, ,--is appil-c4ble.
I I I I
A-C Cioxnp,-wfiem- !reports are requiir-d to vctify fill co-�mipacfion- in da-rn&
I- � MaflTT%eb,3r,e.PS Cffttficafions for propkietary B-MV8 cvrtkbMT",g pir"oper imisatallationi and fun t oning
"11�110rIFIRIT1211OFixR14 T0
's rf.-) Fm �"Vp, r w
rx-w-,P/EvAw,�e
C,,,y"--1`e"m 0,j-)-rr--,\A-,,
F�HC99LE
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11 Vensicm 2.0, January 1 1 2-00 231
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41I
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