HomeMy WebLinkAboutWPO201900027 Plan - VSMP 2020-10-08W 04 i7:IIIIIIINNU �A
OWNER: SM CHARLOTTESVILLE LLC
11710 PLAZA AMERICA DR. SUIT£ 1100
RESTON, VIRGINIA 20190
VUE REALTY PARTNERS LLC
1821 AVON ST. SUITE 200
CHARLOTTESVILLE, VA 22902
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.: 056A1-01 00 02600 (4.400 AC)
05600-00-00-11500 (21.854 AC)
055CO-03-00-000Al (1.340 AC)
05600-00-00-00700 (3.190 AC)
TOTAL AREA: 30.784 ACRES (PORTION OF)
ZONING. R-6 RESIDENTIAL, STANDARD LEVEL - CLUSTER DEVELOPMENT
PROPOSED USE: PROPOSED PUBLIC ROAD TO SERVE AS THE ENTRANCE INTO THE PLEASANT GREEN
NEIGHBORHOOD.
PRESERVED/MANAGED SLOPES: NO PRESERVED SLOPES OR MANAGED SLOPES ARE IMPACTED WITH THIS
ROADWAY CONNECTION. PROPOSED AND MANAGED SLOPES ARE SHOWN
ON THE EXISTING CONDITIONS PLAN SHEET.
SUBDIVISION STREETS- CURB & GUTTER
WA7ERSHED: LICKINGHOLE CREEK WATER SUPPLY WATERSHED
AGRICULTURAL/ FORESTAL DISTRICT- NONE
TOPO & SURVEY.- THE BOUNDARY LINE, PARCEL INFORMATION AND TOPOGRAPHY WERE PROVIDED BY
ROUDABUSH, GALE AND ASSOCIATES IN JANUARY OF 2019. INFORMATION WAS
FIELD VERIFIED BY COLLINS ENGINEERING IN SEPTEMBER OF 2020.
DATUM: NAD 83
EXIS77NG VEGETATION: PAR77ALLY WOODED WITH (2) RESIDENCES ON THE PROPERTY AND EXIS77NG
GRAVEL DRIVEWAYS.
BURIAL SITES: A CEMETERY EXISTS ON THE RESIDUE PROPERTY (PARCEL TMP 56A-1-26). THE
CEMETERY SHALL REMAIN AND WILL BE PRESERVED WITH THE DEVELOPMENT.
STREAM BUFFERS THE 100' STREAM BUFFERS SHOWN HEREON SHALL BE MANAGED IN ACCORDANCE
WITH THE ALBEMARLE COUNTY WATER PR07EC77ON ORDINANCE
FLOODPLAIN: A PORTION OF THE RESIDUE PROPERTY IS LOCATED WITHIN A FLOODPLAIN ZONE
AS SHOWN ON FEMA MAP1151003CO229D, DATED FEBRUARY 4, 2005.
RETAINING WALLS: NO RETAINING WALLS ARE PROPOSED WITH THIS PLAN.
IMPERVIOUS AREAS: PROPOSED SIDEWALK WITH THIS PLAN: 10,600 sf
PROPOSED ROADWAY WIN THIS PLAN: 14,250 sf
OFFSITE EASEMEN T.• ALL PROPOSED GRADING SHALL BE CONSTRUCTED ON S17E OR WITHIN EXIS77NG
RIGHT-OF-WAY. NO OFFSITE EASEMENTS ARE PROPOSED WITH THIS DEVELOPMENT.
TMP-56-115 IS NOT PART OF THE PLEASANT GREEN NEIGHBORHOOD, BUT ARE
PROVIDING THE EASEMENT AND RIGHT-OF-WAY FOR THE PROPOSED PUBLIC ROAD.
NOTES.•
1) THIS PROPERTY DOES NOT LIE WITHIN AN AGRICULTURAL AND/OR FOREST DISTRICT.
2) ONLY (1) DWELLING PER LOT SHALL BE PERMITTED.
3) ALL PROPOSED EASEMENTS SHALL BE DEDICATED TO PUBLIC USE.
4) STREET TREES SHALL BE PROVIDED ALONG ALL THE PUBLIC STREETS 40' O.C. IN ACCORDANCE WITH
VOOT AND ALBEMARLE COUNTY STANDARDS
5) ITE TRIP GENERATION: TRAFFIC IMPACT NUMBERS ARE BASED ON THE ITE TRIP GENERATION MANUAL,
8TH EDITION. CODES 230 WERE USED FOR THE DEVELOPMENT. SEE SHEET 4 OF THE ROAD PLAN FOR
TRAFFIC DISTRIBUTIONS.
6) THIS PROPERTY IS NOT LOCATED WITHIN A DAM INUNDATION ZONE.
PLEASANT GREEN
CONNECTOR ROAD VSMP PLAN
(WPO 201900027)
WHITEHALL DISTRICT
ALBEMARLE COUNTY, VIRGINIA
iiiiiiiiiii
EXISTING RAILROAD
— —
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Sheet List Table
Sheet
Number
Sheet Title
1
COVER
2
EXISTING CONDITIONS & DEMOLITION PLAN
3
EROSION & SEDIMENT CONTROL NOTES & DETAILS
4
PHASE I EROSION & SEDIMENT CONTROL PLAN
5
PHASE 11 EROSION & SEDIMENT CONTROL PLAN
6
STORMWATER MANAGEMENT PLAN
7
STORMWATER MANAGEMENT DETAILS
8
STORMWATER MANAGEMENT DETAILS
9
MITIGATION PLAN
9 TOTAL NUMBER OF SHEETS
SCOTT/R. C�LLINS'Z
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00 C 0.464 ac.
i 2413, P 4 � ' 0.52Q eo. / -
SM CHARLMP 0560TTESVILLE, LLC \O,: DB 1z2 a BUILDING
A1-01-00-02600 '� �� vv -BCE AMEBLORDELORESJ G / PROPOSED ASPHALT
2,
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\ 8.833 ac. / ` O \ / r ps6A1-01-W-0326o SA SAFETY FENCE 3.01
r O,�\ O� �' 0.080 acy / O STREAM BANKS
\ DB 5104, PG 510 \ 222, PG 9a CONSTRUCTION ROAD
ZELLER ORVW
7 \ TMP056A1- 1-0 A \ CR STABILlZA770N 3.03
100' WPO BUFFER f� o.zs ac. CE CONSTRUCTION ENTRANCE 3.02 (+')
OB219N 658 \
----
PROPOSED EASEMENT
VARIES WITH SHEET M
SIL T FENCE 3.05 m
DRAINAGE PIPE N Z
'� lP INLET PROTECT70N 3.07 BENCH MARK if
/Y/ \\ DD TEMPORARY DIVERSION DIKE3.09 v tVDOT STANDARD STOP SIGN JZ PROPOSED HANDICAP
' _ \ O O DI ON Y RIGHT-OF-WAY � �
RW J. PARKING SPACE STRIPING
RESIDUE LAND FROM / VUE REALTY PARTNERS LLC M
PLEASANT GREEN Q TMP 05600-00-00-11500 ST O INLET PROTECTION CV
PHASE I SUBDIVISION TEMPORARY SEDIMENT TRAP J. 13 / 21.854 ac. (�f
TO BE COMBINED WITH DB 4856, PG 582 2ao
\ TMP056AI-Q1-00-02600 SB SEDIMENT BASIN 3.14 EXISTING CONTOUR \
\ 200 PROPOSED CONTOUR
OUTLET PROTECTION 3.18 L11 1
SEDIMENT TRAP OR BASIN
p' i RR RIPRAP J. J 0
DRAINAGE DIVIDE J Q
RR U77LITY STREAM CROSSING 3.25 > O
01
\ O LIMITS OF CLEARING/GRADING LLI >
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I VUE REALTY PARTNERS LLC O `
\ TMP 05600-00-00-11500
\ MALONE, MICHAELA. \ 21.854 ac. LU
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.349 ac. J DB 4856, PG 582 0_•
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B MADELINEN I TMP 055C0-03-00-O — I
TMP055CO-00-OC-00100 I 1.340ac.
J• CAMPBELL, GORDON R 0.390ac. DB 5127, PG 677
• BMADELINEN �\ DB 41Q PG 227
TMP OSSADELINC-00200
0630..
DB 332, PG 323
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/ \ O `x0 TMP 0 OPOa 0 00700
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r� 3.190 aci\ \
qPQ LOUNSBU Y, K VIN NN A ,, DB 5112, PG`�4P
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TMPO -0O-OA-00200 / O�7 / \\ \\
II 0B 989,PG 389 ' LUDWIG, DALE&CHRIS MINE
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O.2, PG 780 ac.
TMP 055C0-00.0A-00400 DB 5132I � I I
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SA TEMPORARY SEEDING 3.31 LIMITS OF DISTURBANCE LU L -
PS PERMANENT SEEDING 3.32 1110— DIVERSION DIKE
OTREE PRESERVATION RIGHT-OF-WAY DIVERSION O
AND PROTECTION 3.38 TREE PROTECTION J O LU
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DC DUST CONTROL 3.39 c SAFETY FENCE Q LU
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SHEET LAYOUT
SCALE: 1" = 100'
9A
APPROVALS
DATE
DEPARTMENT OF COMMUNITY DEVELOPMENT
PLANNER/ZONING
ENGINEER
INSPECTIONS
ARB
DEPARTMENT OF FIRE RESCUE
ALBEMARLE COUNTY SERVICE AUTHORITY
VIRGINIA DEPARMENT OF TRANSPORTATION
HEALTH DEPARTMENT
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JOB NO.
182154
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i (( , CRITZE ,MISTY DA ELL
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EXISTING SHALL A ER, JAMES L OR
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IY6STiNGTMCETO BE
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6ABER, JAMES L OR 7L
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COTTER. CD,LLINSZ
No. 35791 il�-
10/2/20 �41
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STORM SEWER PROPOSED WITH THE
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21.854,ac.` WITH PHASE I CONSTRUCTION OF THE
` DB 4856,PG582 vVv \ '-/r� PROPOSED PLEASANT GREEN PROJECT - - - ----
v �- EXISTING 100-YEAR FLOODPLAIN LIMITS
�/ / f i PER HEC-RAS ANALYSIS PERFORMED BY ---
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/ COLLINS ENGINEERING IN APRIL 2019 (TYP.) -
\ EXISTING 100-YEAR FLOODPLAIN LIMITS
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COLLINS ENGINEERING IN APRIL 2019 (TYP. — Z
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SHEET NO.
2
EROSION & SEDIMENT CONTROL
EROSION CONTROL NOTES
DESCRIPTION OF EROSION &
EROSION CONTROL NOTES & NARRATIVE
MEASURES:
1.
THE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO THE
SEDIMENT CONTROL MEASURES:
PROJECT DESCRIPTION:
PRE -CONSTRUCTION CONFERENCE, ONE WEEK PRIOR TTHE COMMENCEMENT OF LAND
STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES SHALL BE A
DISTURBING ACTIVITY, AND ONE WEEK PRIOR TO THE FINAL INSPECTION.
THE PURPOSE OF THIS LAND DISTURBANCE ACTIVITY IS TO CONSTRUCT THE CONNECTOR ROAD FROM THE PLEASANT GREEN
ACCORDANCE WITH 774E VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK.
2.
ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CONSTRUCTED AND
SUBDIVISION PROJECT TO EXISTING ORCHARD DRIVE. THIS PROJECT PROPOSES TO DISTURB 1.90 oc. OF LAND OUTSIDE OF THE THE
STRUCTURAL PRACTICES USED IN THIS SECTION CONSIST OF THE FOLLOWING:
MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE VIRGINIA
EROSION AND SEDIMENT CONTROL MEASURES:
PREVIOUSLY APPROVED AND PERMITTED WPO 201900003 (12.37 oc.) AND WPO 201900027 (2.36 oc.). THE PROJECT WILL BEGIN ITS
EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS VT
CONSTRUCTION WITH THE PROPOSED ESC MEASURES IMMEDIATELY FOLLOWING PLAN APPROVAL, WHICH IS ANTICIPATED TO BE IN THE
3.01 SAFETY FENCE.,
625-02-00 EROSION AND SEDIMENT CONTROL REGULATIONS
/T IS ANTICIPATED THAT THE CONTRACTOR WILL USE A CONSTRUCTION ENTRANCE,
SPRING OF 2021. THE WORK /S AN7CIPATED TO BE COMPLETED WITHIN 12 MONTHS.
A PROTEC77VE BARRIER INSTALLED TO PREVENT ACCESS TO AN EROSION CONTROL
3.
ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR
RIPRAP, OUTLET PROTECTION, DIVERSIONS, A UTILITY STREAM CROSSING, INLET
EXISTING SITE CONDITIONS,
MEASURE. TO PROHIBIT THE UNDESIRABLE USE OF AN EROSION CONTROL MEASURE BY
AS THE FIRST STEP IN CLEARING.
PROTECTIONS AND SILT FENCES TO CONTROL SURFACE DRAINAGE. TEMPORARY SEEDING
THE EXISTING SITE IS WOODED WITH LIGHT UNDERBRUSH. POWELLS CREEK EXISTS ON THE PROPERTY, FLOWING NORTH TO SOUTH ON
THE PUBLIC. APPLICABLE TO ANY CONTROL MEASURE OR SERIES OF MEASURES WHICH
4.
A COPY OF 774E APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE
WILL BE USED IMMEDIATELY FOLLOWING ALL LAND DISTURBANCE ACTIVITIES. STOCKPILE
THE SITE.
CAN BE CONSIDERED UNSAFE BY VIRTUE OF P07EN77AL ACCESS BY THE PUBLIC.
MAINTAINED ON THE S17E AT ALL TIMES
ADJACENT AREAS.
5.
PRIOR TO COMMENCING LAND DISTURBING AC77W77ES IN AREAS OTHER THAN
LOCA7IONS SHALL BE ON S17E AND SHALL BE STABILIZED WITH A TEMPORARY
THIS SITE IS BORDERED NORTHEAST BY THE PROPOSED PLEASANT GREEN SUBDIVISION, AND ON THE EAST BY EXISTING RESIDENTIAL
3.02 CONSTRUCTION ENTRANCE.*
ON THESE PLANS (INCLUDING BUT NOT LIMITED TO, OFF -SITE BORROW OR
VEGETATIVE COVER. TEMPORARY STOCKPILE AREAS THAT ARE USED FOR STORING SOIL
LOTS. SOUTH OF THE PROPOSED SITE IS ✓ARMANS GAP ROAD, AND ORCHARD DRIVE EXISTS TO THE WEST. SILT FENCE WITH WIRE
A STABILIZED GRAVEL CONSTRUCTION ENTRANCE LOCATED AT POINTS OF VEHICULAR
INGRESS AND EGRESS ON A CONSTRUCTION SITE. TO REDUCE THE AMOUNT OF MUD
WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION
UNTIL A LATER TIME FOR SPREADING WILL REQUIRE MAINTENANCE & SHALL BE
BACKING A UTILITY STREAM CROSSING, RIPRAP, INLET CONTROLS AND VARIOUS OTHER ESC MEASURES ARE PROPOSED TO LIMIT THE
TRANSPORTED ONTO PAVED PUBLIC ROADS BY MOTOR VEHICLES OR RUNOFF.
CONTROL PLAN TO THE OWNER FOR REVIEW AND APPROVAL BY THE PLAN APPROVING
BY SILT FENCE AT ALL TIMES PERMANENT SEEDING WILL BE PERFORMED
POTENTIAL FOR CONTAMINAT70N OF THESE ADJACENT PROPERTIES AND WATERWAYS.
CONSTRUCTION ENTRANCES SHALL BE INSTALLED AS SHOWN ON 7HE PLANS TO REDUCE
6.
AUTHORITY
THE CONTRACTOR IS RESPONSIBLE FOR INSTALLA770N OF ANY ADDITIONAL EROSION
FOR
FOR ALL AREAS WHICH WILL NO LONGER BE EXCAVATED AND WHERE CONSTRUCTION
OFFSITE LAND DISTURBANCE,
THE AMOUNT SEDIMENT TRANSPORTED ONTO PUBLIC ROADWAYS
CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS
ACTIVITIES HAVE CEASED. PERMANENT SEEDING SHALL ALSO BE PERFORMED FOR ALL
OFFSITE LAND DISTURBANCE IS LIMITED TO PUBLIC RIGHT-OF-WAY AND AREAS LOCATED WITHIN 774E OVERALL PLEASANT GREEN
3.03 CONSTRUCTION ROAD STABILIZATION:
:
DETERMINED BY THE PLAN APPROVING AUTHORITY.
DENUDED AREAS WHICH WILL BE LEFT DORMANT FOR A YEAR OR MORE. SELECTION OF
BOUNDARY.
SOILS.,
THE TEMPORARY STABILIZATION OF ACCESS ROADS, SUBDIVISION ROADS, PARKING
ACCESS
7
ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES
AT ALL TIMES DURING LAND DISTURBING AC77W77ES AND DURING SITE DEVELOPMENT
SEED MIXTURE WILL DEPEND ON THE TIME OF YEAR APPLIED. TEMPORARY SEEDING WILL
SEE SOIL DESCRIP77ONS ON THIS PAGE AND THE PHASE I EROSION & SEDIMENT CONTROL PLAN FOR BOUNDARIES, SOIL TYPES AND
AREAS, AND OTHER SITE VEHICLE TRANSPORTA77ON ROUTES WITH STONE IMMEDIATELY
AFTER GRADING. TO REDUCE EROSION OF TEMPORARY ROADBEDS BY CONSTRUCTION
UN77L FINAL STABILIZATION IS ACHIEVED.
BE PERFORMED FOR ALL DENUDED AREAS WHICH WILL BE LEFT DORMANT FOR MORE
GENERAL SOIL DETAILS.
TRAFFIC DURING WET WEATHER AND TO REDUCE EROSION AND SUBSEQUENT REGARDING
B.
DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED
THAN SEVEN DAYS THESE AREAS SHALL BE SEEDED WITH FAST GERMINATING
CRITICAL AREAS:
OF PERMANENT ROADBEDS BETWEEN THE 77ME OF IN177AL GRADING AND FINAL
FILTERING DEVICE.
POWELLS CREEK AND ITS IMMEDIATELY ADJACENT WETLANDS ARE LOCATED ON THE PROPERTY. THESE ARE CONSIDERED CRITICALLY
STABILIZATION. USE WHEREVER STONE -BASE ROADS OR PARKING AREAS ARE
9.
THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY
VEGETATION IMMEDIATELY FOLLOWING GRADING OF THOSE AREAS. SELECTION OF SEED
SENSITIVE AREAS. 774E CONTRACTOR SHALL GIVE EXTRA ATTENTION AND CAUTION IN AND AROUND THESE CRI77CAL AREAS TO ENSURE
CONSTRUCTED, WHETHER PERMANENT OR TEMPORARY, FOR USE BY CONSTRUCTION
AND AFTER EACH RUNOFF -PRODUCING RAINFALL EVENT. ANY NECESSARY REPAIRS OR
MIXTURE WILL DEPEND ON THE TIME OF YEAR APPLIED.
SEDIMENT /S NOT DEPOSITED ON THEM. TREE PR07EC77ON FENCING, SILT FENCING, DIVERSIONS AND SEDIMENT TRAPPING DEVICES
TRAFFIC.
CLEANUP TO MAINTAIN THE EFFEC77VENESS OF THE EROSION CONTROL DEVICES SHALL
SHALL ALSO BE INSTALLED AS A FIRST STEP IN LAND DISTURBANCE TO ENSURE THESE CRI77CAL AREAS ARE MAINTAINED.
BE MADE IMMEDIATELY.
3.01 SAFETY FENCE - SAFETY FENCE IS PROPOSED AROUND THE SEDIMENT BASIN AND
SEQUENCE OF CONSTRUCTION:
SILT FENCE:
11..
ALL FILL MATERIAL TO BE TAKEN FROM AN APPROVED, DESIGNATED BORROW AREA.
1. CONTRACTOR SHALL NOTIFY THE ALBEMARLE COUNTY COMMUNITY DEVELOPMENT ENGINEERING DEPARTMENT TO SCHEDULE A
A
A TEMPORARY SEDIMENT BARRIER CONSISTING OF A SYNTHETIC FILTER FABRIC
i).
ALL WASTE MATERIALS SHALL BE TAKEN TO AN APPROVED WASTE AREA. EARTH FILL
SEDIMENT TRAP.
PRE-CONS7RUC770N MEETING.
STRETCHED ACROSS AND ATTACHED TO SUPPORTING POSTS AND ENTRENCHED, TO
SHALL BE INERT MATERIALS ONLY, FREE OF ROOTS, STUMPS WOOD, RUBBISH, AND
3.02 CONSTRUCTION ENTRANCE - TO REDUCE THE AMOUNT OF MUD TRANSPORTED
2 PRIOR TO DISTURBANCES, 774E LIMITS OF DISTURBANCE SHALL BE FLAGGED AND THE TREE PR07EC77ON FENCING SHALL BE
INTERCEPT AND DETAIN SMALL AMOUNTS OF SEDIMENT FROM DISTURBED AREAS DURING
OTHER DEBRIS
ONTO PAVED PUBLIC ROADS BY MOTOR VEHICLES OR RUNOFF. (2) CONSTRUCTION
INSTALLED.
N
CONS7RUC77ON OPERATIONS IN ORDER TO PREVENT SEDIMENT FROM LEAVING THE SITE,
12.
BORROW OR WASTE AREAS ARE TO BE RECLAIMED WITHIN 7 DAYS OF COMPLETION
AND TO DECREASE THE VELOCITY OF SHEET FLOWS AND LOW -TO -MODERATE LEVEL
PER ZONING ORDINANCE SEC77ON 5.1.28.
ENTRANCES ARE PROPOSED.
J. EROSION CONTROL MEASURES MAY BE REMOVED DURING THE CONSTRUCTION PROCESS WITHOUT THE APPROVAL FROM THE
CHANNEL FLOWS. THE SILT FENCE BARRIERS SHALL BE INSTALLED DOWN SLOPE OF
13.
ALL INERT MATERIALS SHALL BE TRANSPORTED IN COMPLIANCE WITH SEC77ON 13-JOI
3.03 CONSTRUCTION ROAD STABILIZATION - TO REDUCE THE EROSION OF TEMPORARY
INSPECTOR ON 7H£ PROJECT.
AREAS WITH MINIMAL GRADES TO FILTER SEDIMENT LADEN RUNOFF FROM SHEET FLOW
OF THE CODE OF ALBEMARLE.
4• INSTALLATION OF THE PROPOSED CONSTRUCTION ENTRANCES SHALL OCCUR NEXT. THE CONTRACTOR SHALL APPLY
AS INDICATED. THEY SHALL BE INSPECTED IMMEDIATELY AFTER EACH RAINFALL AND
14.
BORROW, FILL OR WASTE ACTIVITY INVOLVING INDUSTRIAL -TYPE POWER EQUIPMENT
ROADBEDS BY CONSTRUCTION TRAFFIC AND TO REDUCE THE EROSION AND SUBSEQUENT
CONSTRUCTION ROAD STABILIZATION AS NEEDED TO THE CONSTRUCTION ENTRANCES AND CONTRACTOR PARKING STAGING
/
MAINTAINED IN ACCORDANCE WITH THE VIRGINIA EROSION & SEDIMENT CONTROL
SHALL BE LIM17ED TO THE HOURS OF 7:00 AM TO 9.00 PM.
REGARDING OF PERMANENT ROADBEDS BETWEEN THE TIME OF INITIAL GRADING AND
AREA. CONSTRUCTION ENTRANCE TO BE INSTALLED WHERE CONSTRUCTION VEHICLE ROUTES INTERSECT PAVED PUBLIC ROADS,
HANDBOOK (VESCH).
( J
15.
BORROW, FILL OR WASTE AC77NTY SHALL BE CONDUCTED IN A SAFE MANNER THAT
FINAL STABILIZATION. CONSTRUCTION ROAD STABILIZATION WILL BE APPLIED TO THE
PROVISIONS SHALL BE MADE TO MINIMIZE THE TRANSPORT OF SEDIMENT BY VEHICULAR TRACKING ONTO THE PAVED SURFACE.
(VEHICULAR)
MAINTAINS LATERAL SUPPORT, OR ORDER TO MINIMIZE ANY HAZARD TO PERSONS,
CONTRACTOR PARKING & STAGING AREAS AS NEEDED.
WHERE SEDIMENT IS TRANSPORTED ONTO A PUBLIC ROAD SURFACE, THE ROAD SHALL BE CLEANED 7HOROUGHLY AT THE END OF
307 STORM DRAIN INLET PROTECTION.,
PHYSICAL DAMAGE TO ADJACENT LAND AND IMPROVEMENTS, AND DAMAGE TO ANY
EACH DAY. SEDIMENT SHALL BE REMOVED FROM THE ROADS BY SHOVELING OR SWEEPING AND TRANSPORTING TO A SEDIMENT
A SEDIMENT FILTER OR AN EXCAVATED IMPOUNDING AREA AROUND A STORM DRAIN
PUBLIC STREET BECAUSE OF SLIDES, SINKING, OR COLLAPSE.
305 SILT FENCE- SILT FENCE IS PROPOSED, WHERE SHOWN ON THE PLANS.
CONTROL DISPOSAL AREA. STREET WASHING SHALL BE ALLOWED ONLY AFTER SEDIMENT IS REMOVED IN THIS MANNER.
DROP INLET OR CURB INLET. TO PREVENT SEDIMENT FROM ENTERING STORM DRAINAGE
16.
THE DEVELOPER SHALL RESERVE THE RIGHT TO INSTALL, MAINTAIN, REMOVE OR
3.07 STORM DRAIN INLET PROTECTION- STORM DRAIN INLET PROTECTION IS SHOWN ON
5. THE INITIAL ESC CONSTRUC770N MEASURES, AS SHOWN ON THE PHASE I EROSION &SEDIMENT CONTROL PLAN, SHALL BE
SYSTEMSP AREA.INLET
SYSTEMS PRIOR TO PERMANENT STABILlZA770N OF THE DISTURBED AREA. INLET
CONVERT TO PERMANENT STORMWATER MANAGEMENT FACIL177ES WHERE APPLICABLE
THE PLANS WHEN INLETS ARE CONSTRUCTED BUT THEIR SITE's CONTRIBUTING DRAINAGE
INSTALLED NEXT. THE CONTRACTOR SHALL BEGIN BY INSTALLING THE PERIMETER SILT FENCE AND TREE PR07EC770N. PER/METER
APPLIES WHERE STORM DRAIN INLETSOF ARE TO BE MADE
PR0BEFORE
ALL EROSION CONTROL MEASURES REQUIRED BY THIS PLAN REGARDLESS OF THE
MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AS A FIRST STEP WITH ANY LAND DISTURBANCE ACTIVITY AND
PERMANENT STABILIZATION OF THE CORRESPONDING DISTURBED DRAINAGE
SALE OF ANY LOT, UNIT, BUILDING OR OTHER POR77ON OF THE PROPERTY.
AREA IS STILL BEING STABILIZED.
SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE LAND DISTURBANCE TAKES PLACE.
AREA.
17.
TEMPORARY STABILIZA77ON SHALL BE TEMPORARY SEEDING AND MULCHING. SEEDING
JOB CULVERT INLET PROTEC7ON - PROPOSED AT THE INLET OF THE TEMPORARY
6. ONCE THE PERIMETER EROSION CONTROL SILT FENCE AND TREE PROTECTION HAVE BEEN INSTALLED, AND THE COUNTY
3.11 TEMPORARY RIGHT-OF-WAY DIVERSION.•
IS TO BE AT 75 LBS/ACRE, AND IN THE MONTHS OF SEPTEMBER TO FEBRUARY TO
CONSTRUCTION ENTRANCE CULVERT.
INSPECTOR HAS APPROVED THESE MEASURES, LIGHT CLEARING AND LAND DISTURBANCE MAY BEGIN FOR THE REMAINING
A RIDGE OF COMPACTED SOIL OR LOOSE ROCK OR GRAVEL CONSTRUCTED ACROSS
CONSIST A 50/50 MIX OF ANNUAL RYGRASS AND CEREAL WINTER RYE, OR IN MARCH
3.18 OUTLET PROTECTION -OUTLET PROTECTION IS PROPOSED AT THE OUTLET OF THE
PER/METER CONTROLS, INCLUSIVE OF SEDIMENT TRAP /j'1. THE CONTRACTOR SHALL FOLLOW THE TRAP INSTALLATI0N WITH THE
DISTURBED RIGHTS -OF -WAY AND SIMILAR SLOPING AREAS. TO SHORTEN THE FLOW
AND APRIL TO CONSIST OF ANNUAL RYE, OR MAY THROUGH AUGUST TO CONSIST OF
STREAM DIVERSION IN ACCORDANCE WITH THE PLAN AND DETAILS SHOWN ON THE PHASE / ESC PLAN. AFTER DIVERTING THE
LENGTH WITHIN A SLOPING RIGHT-OF-WAY, THEREBY REDUCING THE EROSION POTENTIAL
GERMAN MILLET. STRAW MULCH IS TO BE APPLIED AT 80LBS/100SF. ALTERNA77VES
BOX CULVERT CROSSING. SEE THE ESC PLAN FOR THE DESIGN LOCATION.
STREAM AND OBTAINING THE ESC INSPECTORS PERMISSION, THE CONTRACTOR CAN INSTALL THE PROPOSED TRIPLE BOX CULVERT
BY DIVER7NG STORM RUNOFF TO A STABILIZED OUTLET. GENERALLY, EARTHEN
ARE SUBJECT TO APPROVAL BY THE EROSION CONTROL INSPECTOR.
3.19 RIPRAP- RIPRAP IS PROPOSED AT THE OUTLET OF THE CULVERT CROSSING AND
AND ASSOCIATED WING WALLS AND RIPRAP. ONCE THE TRIPLE BOX CULVERT IS INSTALLED AND THE ESC AND VDOT
DIVERSIONS ARE APPLICABLE WHERE THERE WILL BE LITTLE OR NO CONSTRUCTION
18.
PERMANENT STABILIZA77ON SHALL BE LIME AND FERT7LIZER, PERMANENT SEEDING AND
TEMPORARY CONSTRUCTION ENTRANCE CULVERT
INSPECTORS HAVE GIVEN APPROVAL, THE STREAM DIVERSION MAY BE REMOVED AND THE NORMAL FLOW COND177ON THROUGH THE
TRAFFIC WITHIN THE RIGHT-OF-WAY. GRAVEL STRUCTURES ARE MORE APPLICABLE TO
MULCH. AGRICULTURAL GRADE LIMESTONE SHALL BE APPLIED AT 90LBS/1000SF,
PROPOSED TRIPLE BOX CULVERT CAN BE ESTABLISHED. FOLLOWING THIS, THE CONTRACTOR SHALL INSTALL ANY REMAINING
ROADS AND OTHER RIGHTS -OF -WAY WHICH ACCOMMODATE VEHICULAR TRAFFIC.
INCORPORATED INTO THE TOP 4-6 INCHES OF SOIL. FERTILIZER SHALL BE APPLIED AT
3.25 UTILITY STREAM CROSSING- A UTILITY STREAM CROSSING lS PROPOSED FOR THE
EROSION CONTROL ITEMS AS SHOWN ON THE PHASE l EROSION CONTROL PLAN. TEMPORARY SEEDING, PERMANENT SEEDING AND
1000LBS/ACRE AND CONSIST OF A 10-20-10 NUTRIENT MIX. PERMANENT SEEDING
BOX CULVERTS AT THE CONNECTOR ROAD CROSSING.
DUST CONTROL SHALL BE IMPLEMENTED AS REQUIRED.
312 DIVERSION:
SHALL BE APPLIED AT 180LBS/ACRE AND CONSIST OF 957 KENTUCKY 31 OR TALL
3.32 PERMANENT SEEDING -PERMANENT SEEDING IS REQUIRED AND PROPOSED WITH THIS
7. ONCE ALL THE PHASE / EROSION CONTROL ITEMS HAVE BEEN INSTALLED & ARE OPERATIONAL, DRAINAGE /S PROPERLY
A CHANNEL CONSTRUCTED ACROSS A SLOPE WI7H A SUPPORTING EARTHEN RIDGE ON
FESCUE AND 0-5% PERENNIAL RYGRASS OR KENTUCKY BLUEGRASS. STRAW MULCH IS
PLAN.
CONVEYED TO THESE MEASURES, AND THE ESC INSPECTOR HAS GRANTED APPROVAL, THE CONTRACTOR CAN BEGIN PHASE ll OF
THE LOWER SIDE. TO REDUCE SLOPE LENGTH AND TO INTERCEPT AND DIVERT
STORMWATER RUNOFF TO STABILIZED OUTLETS AT NON -EROSIVE VELOCITIES. APPLIES
TO BE APPLIED AT 80LBS/100SF. ALTERNA77VES ARE SUBJECT TO APPROVAL BY THE
3.38 TREE PRESERVATION AND PROTECTION- TREE PROTECTION IS PROPOSED WITH THIS
THE EROSION AND SEDIMENT CONTROL PLAN.
8. AFTER CLEARING THE PROPOSED AREAS, THE CONTRACTOR CAN BEGIN ROUGH GRADING THE S17E TO THE CONTOURS SHOWN ON
WHERE RUNOFF FROM AREAS OF HIGHER ELEVATION MAY DAMAGE PROPERTY, CAUSE
EROSION, OR INTERFERE WITH THE ESTABLISHMENT OF VEGETATION ON LOWER AREAS,
19.
EROSION CONTROL INSPECTOR.
MAINTENANCE., ALL MEASURES ARE TO BE INSPECTED WEEKLY AND AFTER EACH
PLAN. SEE THE ESC PLAN FOR THE REQUIRED LOCATIONS
THE PHASE ll EROSION &SEDIMENT CONTROL PLAN. MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AS A
HALUPSL BE
PLAN.TIVITY
WHERE SURFACE AND/OR SHALLOW SUBSURFACE FLOW IS DAMAGING SLOPING UPLAND,
RAINFALL. ANY DAMAGE OR CLOGGING TO STRUCTURAL MEASURES IS TO BE REPAIRED
3.39 DUST CONTROL -DUST CONTROL IS REQUIRED AND PROPOSED WITH THIS PLAN.
FIRST STEP WITH ANY LAND DISTURBANCE AC AND SHALL BE MADE FUNCTIONAL BEFORE LAND DISTURBANCE
AND WHERE THE SLOPE LENGTH NEEDS TO BE REDUCED TO MINIMIZE SOIL LOSS.
IMMEDIATELY. SILT TRAPS ARE TO BE CLEANED WHEN 507 OF THE WET STORAGE
TAKES PLACE.
VOLUME IS FILLED WITH SEDIMENT. ALL SEEDED AREAS ARE TO BE RESEEDED WHEN
9. PERMANENT OR TEMPORARY SOIL STABILlZA770N SHALL BE APPLIED TO DENUDED AREAS WITHIN SEVEN DAYS AFTER FINAL
J.13 TEMPORARY SEDIMENT TRAP:
NECESSARY TO ACHIEVE A GOOD STAND OF GRASS. SILT FENCE AND DIVERSION
GRADE IS REACHED ON ANY POR77ON OF THE SITE. TEMPORARY SOIL STABILIZA77ON SHALL BE APPLIED WITHIN SEVEN DAYS TO
A TEMPORARY PONDING AREA FORMED BY CONSTRUC77NG AN EARTHEN EMBANKMENT
DYKES WHICH ARE COLLECTING SEDIMENT TO HALF THEIR HEIGHT MUST BE CLEANED
DENUDED AREAS THAT MAY NOT BE AT FINAL GRADE BUT WILL REMAIN DORMANT (UNDISTURBED) FOR LONGER THAN 30 DAYS.
WITH A STONE OUTLET. TO DETAIN SEDIMENT -LADEN RUNOFF FROM SMALL DISTURBED
AND REPAIRED IMMEDIATELY.
PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE YEAR.
AREAS LONG ENOUGH TO ALLOW 7HE MAJORITY OF THE SEDIMENT TO SETTLE OUT.
20.
ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE REMOVED
10. ONCE THE SITE IS ROUGH GRADED, THE CONTRACTOR SHALL BEGIN INSTALLATION OF THE PROPOSED ROADWAY. INLET
USE BELOW DISTURBED AREAS WHERE THE TOTAL CONTRIBUTING DRAINAGE AREA /S
WITHIN 30 DAYS 0 AL SITE WHEN MEASURES ARE NO LONGER
F FINSTABILIZATION,A
MAINTENANCE.
PROTECTION SHALL BE INSTALLED ON ALL INLETS IMMEDIATELY FOLLOWING THEIR CONSTRUCTION. THE INLET PROTECTIONS SHALL
LESS THAN 3 ACRES, WHERE THE SEDIMENT TRAP WILL BE USED NO LONGER THAN 18
NEEDED, SUBJECT TO APPROVAL BY THE EROSION CONTROL INSPECTOR.
BE INSPECTED AFTER EACH RAINFALL EVENT AND REPAIRS SHALL BE MADE AS NEEDED. IF THE STONE FILTER BECOMES
MONTHS, AND IT MAY BE CONSTRUCTED EITHER INDEPENDENTLY OR IN CONJUNCTION
21.
THE E&S INSPECTOR HAS THE AUTHORITY TO ADD OR DELETE E&S CONTROLS AS
IN GENERAL, DURING CONSTRUCTION THE RLD OR CONTRACTOR ON -SITE WILL CHECK ALL
CLOGGED WITH SEDIMENT SO THAT IT NO LONGER ADEQUATELY PERFORMS ITS FUNCTION, THE STONE MUST BE PULLED AWAY
WITH A TEMPORARY DIVERS/ON DIKE.
NECESSARY IN THE FIELD AS S17E COND177ONS CHANGE. IN ADDITION, NO SEDIMENT
EROSION AND SEDIMENT CONTROL MEASURES DAILY AND AFTER EACH SIGNIFICANT
AND CLEANED AND/OR REPLACED. THE CONSTRUCTED STORM SEWER SHALL OUTFALL INTO SEDIMENT 7RAP #1 UN77L THE S17F /S
BASIN OR TRAP CAN BE REMOVED WITHOUT WRITTEN AUTHORIZATION.
RAINFALL. MONITORING REPORTS WILL BE REQUIRED FROM THE RLD IF NEEDED. SPECIFIC
COMPLETELY STABILIZED.
J.14 TEMPORARY SEDIMENT BASIN:
ATTEN77ON WILL BE GIVEN TO THE FOLLOWING ITEMS.,
11. AFTER THE SITE IS FULLY STABILIZED, AND THE ESC INSPECTOR GRANTS APPROVAL, THE CONTRACTOR SHALL CONVERT THE
A TEMPORARY BARRIER OR DAM WITH A CONTROLLED STORMWATER RELEASE
STRUCTURE FORMED BY CONSTRUCTING AN EMBANKMENT OF COMPACTED SOIL ACROSS
SOIL DESCRIPTION
o. SEDIMENT BASINS AND/OR TRAPS WILL BE CLEANED AND MAINTAINED IN
TEMPORARY ESC SEDIMENT TRAP #1 TO A PERMANENT SWM FACILITY.
ACCORDANCE WITH THE VIRGINIA EROSION &SEDIMENT CONTROL HANDBOOK.
12. ONCE PHASE ll OF CONSTRUC710N IS COMPLETE, THE SITE IS STABILIZED AND THE INSPECTOR HAS GIVEN APPROVAL, THE
A DRAINAGEWAY. TO DETAIL SEDIMENT -LADEN RUNOFF FROM DISTURBED AREAS
"WET" AND 'DRY" STORAGE LONG ENOUGH FOR THE MAJORITY OF THE SEDIMENT TO
78-
BRADDOCK LOAM-2 TO 79 SLOPES. SOIL IS WELL DRAINED WITH A MEDIUM RUNOFF
b.ALL GRAVEL OUTLETS WILL BE CHECKED REGULARLY FOR SEDIMENT BUILDUP THAT
CONTRACTOR CAN REMOVE THE EROSION & SEDIMENT CONTROL MEASURES. NO ITEM SHALL BE REMOVED, THROUGHOUT ALL
S
SETTLE OUT. APPLIES BELOW DISTURBED AREAS WHERE THE TOTAL CONTRIBUTING
CLASSIFICATION. SURFACE LAYER lS TYPICALLY LOAM AND ABOUT 0-8'" THICK. THE
WILL PREVENT PROPER DRAINAGE. IF THE GRAVEL IS CLOGGED BY SEDIMENT, THE
PHASES OF CONSTRUCTION, UNLESS THE UPSTREAM AREAS ARE STABILIZED AND THE INSPECTOR GIVES PRIOR PERMISSION.
DRAINAGE AREA IS EQUAL TO OR GREATER THAN THREE ACRES THERE MUST BE
GRAVEL WILL BE REMOVED AND CLEANED, OR IT WILL BE REPLACED.
13. THE CONTRACTOR SHALL MAINTAIN ALL EROSION CONTROL MEASURES AS SPECIFIED IN THE VIRGINIA EROSION AND SEDIMENT
SUFFICIENT SPACE AND APPROPRIATE TOPOGRAPHY FOR THE CONSTRUCTION OF A
DEPTH TO THE WATER TABLE IS GENERALLY MORE THAN 80'".
c.ALL SILT FENCE BARRIERS WILL BE CHECKED REGULARLY FOR UNDERMINING OR
CONTROL HANDBOOK REMOVING ONLY WHEN APPROVED BY THE LOCAL PROGRAM ADMINISTRATOR IN ACCORDANCE WITH THE
TEMPORARY IMPOUNDMENT.
77-
CRAIGSuILLE LOAM-0 TO 29 SLOPES. SOIL /S WELL DRAINED WITH A VERY Low
DETERIORATION OF THE FABRIC AND REPAIRED AS REQUIRED. SEDIMENT SHALL BE
VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK.
RUNOFF CLASSIFICATION. SURFACE LAYER IS TYPICALLY LOAM AND ABOUT 0-8"
REMOVED WHEN THE LEVEL OF SEDIMENT DEPOSITION REACHED HALF WAY TO THE
14. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS AFTER FINAL SITE
3,18 OUTLET PROTECTION:
THICK. THE DEPTH TO THE WATER TABLE IS GENERALLY MORE THAN 80'".
TOP OF THE BARRIER.
STABILIZATION OR AFTER THE TEMPORARY MEASURES ARE NO LONGER NEEDED, UNLESS OTHERWISE AUTHORIZED BY THE LOCAL
STRUCTURALLY LINED APRONS OR OTHER ACCEPTABLE ENERGY DISSIPATING DEVICES
25B-DYKE
SILT LOAM-2 TO 7% SLOPES. SOIL IS WELL DRAINED WITH A MEDIUM RUNOFF
d. ALL SEEDED AREAS WILL BE CHECKED REGULARLY TO SEE THAT A GOOD STAND IS
PROGRAM ADMINISTRATOR. TRAPPED SEDIMENT AND THE DISTURBED SOIL AREAS RESUL77NG FROM THE DISPOSITION OF
PLACED AT THE OUTLETS OF PIPES OR PAVED CHANNEL SECTIONS. TO PREVENT
CLASSIFICATION. SURFACE LAYER IS TYPICALLY SILT LOAM AND ABOUT 0-8" THICK.
TEMPORARY MEASURES SHALL BE PERMANENTLY STABILIZED TO PREVENT FURTHER EROSION AND SEDIMENTATION.
SCOUR AT STORMWATER OUTLE75; TO PROTECT THE OUTLET STRUCTURE, AND TO
THE DEPTH TO THE WATER TABLE IS GENERALLY MORE THAN 80".
MAINTAINED. AREAS SHOULD BE FER77LIZED AND RESEEDED AS NEEDED,
MINIMIZE THE POTEN7AL FOR DOWNSTREAM EROSION BY REDUCING THE VELOCITY AND
37DJ-HAYESVILLE
LOAM-15 TO 25% SLOPES. SOIL /S WELL DRAINED WITH A HIGH
IN CASE OF EMERGENCY, THE PRIMARY CONTACT FOR THE PROJECT WILL BE THE RLD
ENERGY OF CONCENTRATED STORMWATER FLOWS. APPLICABLE TO THE OUTLETS OF ALL
RUNOFF CLASSIFICATION. SURFACE LAYER IS TYPICALLY LOAM AND ABOUT 0-7"
OR CONTRACTOR ON -SITE THE CONTRACTOR AT THIS TIME IS DIGS. BROOK WOOD WITH
PIPES AND ENGINEERED CHANNEL SEC77ONS•
THICK. THE DEPTH TO THE WATER TABLE IS GENERALLY MORE THAN 80".
DIGS MAY BE REACHED AT (434) 978-4435. IN ADDIT70N THE OWNER MAY BE
CONTACTED. UPON COMPLET70N OF THE PROJECT, THE OWNER WILL BE RESPONSIBLE
J.19 RIPRAP:
REFERENCE: WEB SOIL SURVEY ONLINE DATABASE, FOUND AT
FOR SITE MAINTENANCE.
A PERMANENT, EROSION -RESISTANT GROUND COVER OF LARGE, LOOSE, ANGULAR
http://websoilsurvey.nres.usda.gov/app/WebSoRSurvey.aspx
STONE WITH FILTER FABRIC OR GRANULAR UNDERLINING. TO PR07ECT THE SOIL FROM
THE EROSIVE FORCES OF CONCENTRATED RUNOFF, SLOW THE VELOCITY OF
CONCENTRATED RUNOFF W4/1LE ENHANCING THE POTENTIAL FOR INFILTRATION, AND TO
EROSION CONTROL NOTES
STABILIZE SLOPES 07H SEEPAGE PROBLEMS, AND/OR NON -COHESIVE SOILS. USE
--
WHEREVER SOIL AND WATER INTERFACE AND THE SOIL CONDITIONS, WATER TURBULENCE
-
ES-1: UNLESS OTHERWISE INDICATED, ALL VEGETA77VE AND STRUCTURAL
AND VELOCITY, EXPECTED VEGETA77VE COVER, ETC., ARE SUCH THAT 774E SOIL MAY
SILT FENCE CULVERT INLET
EROSION AND SEDIMENT CONTROL PRACTICES WILL BE CONSTRUCTED
ERODE UNDER THE DESIGN FLOW CONDITIONS
AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND
PROTECTION
SPECIFICA7ONS OF THE WRGINIA EROSION AND SEDIMENT CONTROL
3.25 UTILITY STREAM CROSSING:
HANDBOOK AND WRGINIA REGULA77ONS VR 625-02-00 EROSION
A STRATEGY FOR CROSSING SMALL WA7ERWAYS WHEN IN-S7REAM U77LITY
AND SEDIMENT CONTROL REGULATIONS
CONS7RUC77ON IS INVOLVED. TO HELP PROTECT SEDIMENT FROM ENTERING THE
ENDWA _
ES-2. THE PLAN APPROVING AUTHORITY MUST BE N077FIED ONE WEEK
STREAM FROM CONSTRUCTION WITHIN APPROACH AREAS TO MINIMIZE THE AMOUNT OF
PRIOR TO THE PRE -CONSTRUCTION CONFERENCE, ONE WEEK PRIOR
G
TO THE COMMENCEMENT OF LAND DISTURB/NG ACTIVITY AND ONE
DISTURBANCE WITHIN THE STREAM ITSELF. G ENERALLY APPC LI ABLE TO FLOWIN
STREAMS WITH DRAINAGE AREAS LESS THAN ONE SQUARE MILE.
331 TEMPORARY SEEDING.
THE ESTABLISHMENT OF A TEMPORARY VEGETA77VE COVER ON DISTURBED AREAS BY
SEEDING WITH APPROPRIATE RAPIDLY GROWING ANNUAL PLANTS. TO REDUCE EROSION
AND SEDIMENTATION BY STABILIZING DISTURBED AREAS THAT WILL NOT BE BROUGHT TO
_________ __-----------------
T-'-T-J
TOE OF FILL LI _ CULVERT
----
,
WEEK PRIOR TO THE FINAL INSPECTION.
ES-3.-ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE
PLACED PRIOR TO OR AS THE FIRST STEP IN CLEARING.
ES-4:A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN
SHALL BE MAINTAINED ON THE SITE AT ALL TIMES. GENERAL SLOPE 3:1 OR LESS PER ACRE
ES-5:PR/OR TO COMMENCING LAND DISTURBING ACTIVITIES /N AREAS TOTAL LBS
i
FINAL GRADE FOR A PERIOD OF MORE THAN 30 DAYS. TO REDUCE DAMAGE FROM
;
OTHER THAN INDICATED ON THESE PLANS (INCLUDING BUT NOT KENTUCKY 31 FESCUE 128 Las,
SEDIMENT AND RUNOFF TO DOWNSTREAM OR OFF -SITE AREAS, AND TO PROVIDE
-
- ; -
LIMITED TO, OFF -SITE BORROW OR WASTE AREAS), THE CONTRACTOR RED TOP GRASS 2 LBS.
PROTECTION TO BARE SOILS EXPOSED DURING CONSTRUC7ON UN77L PERMANENT
i
SHALL SUBMIT A SUPPLEMENTARY EROSION CONTROL PLAN TO THE SEASONAL NURSE CROP 20 LBS.
VEGETATION OR OTHER EROSION CONTROL MEASURES CAN BE ESTABLISHED.
i
OWNER FOR REVIEW AND APPROVAL BY THE PLAN APPROVING
AUTHORITY. SEASONAL NURSE CROP 150 LBS
I I
3.32 PERMANENT STABILIZATION:
ES-6: THE CONTRACTOR IS RESPONSIBLE FOR INSTALLA7ON OF ANY
THE ESTABLISHMENT OF PERENNIAL VEGETA77VE COVER ON DISTURBED AREAS BY
____ __________ __ ______ _ _ ___-- _ __
Y
ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT FEBRUARY 16 THROUGH APRIL ANNUAL RYE
PLANTING SEED. TO REDUCE EROSION AND DECREASE SEDIMENT YIELD FROM
`-- ---
EROSION AND SEDIMENTATION AS DETERMINED BY THE PLAN MAY 1 THROUGH AUGUST 15 FOXTAIL MILLET
DISTURBED AREAS. TO PERMANENTLY STABILIZE DISTURBED AREAS IN A MANNER THAT
APPROVING AUTHORITY. AUGUST 16 THROUGH OCTOBER ANNUAL RYE
IS ECONOMICAL, ADAPTABLE TO SITE CONDITIONS, AND ALLOWS SELECTION OF THE
TOE OF FILL
ES-7.•ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT NOVEMBER THROUGH FEBRUARY 15 WINTER RYE
MOST APPROPRIATE PLANT MATERIALS. TO IMPROVE WILDLIFE HABITAT TO ENHANCE
CONTROL MEASURES AT ALL TIMES DURING LAND DISTURBING NOTES:
NATURAL BEAUTY. UPON COMPLETION OF CONSTRUC7ON ACT7Vl77ES, ALL AREAS WILL
AC77W77ES AND DURING SITE DEVELOPMENT UN77L FINAL
RECEIVE A PERMANENT VEGETA77VE COVER.
SILT FENCE
r DISTANCE IS e• MINIMUM IF ROW
STABILIZATION IS ACHIEVED. 1. LIME AND FERTILIZER NEEDS SHALL BE DETERMINED BY SOIL
IS TOWARD EMBMKMENT
ES-8. DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN TESTS AND APPLIED IN ACCORDANCE WITH VESCH STD. 3.32.
3.38 TREE PRESERVA77ON AND PROTECTION:
APPROVED WATER FILTERING DEVICE.
PR07EC77ON OF DESIRABLE TREES FROM MECHANICAL OR OTHER INJURY DURING LAND
rLow
2. SEEDINGS TO BE MULCHED IMMEDIATELY UPON COMPLETION
ES-9: THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES H I
DISTURBING AND CONSTRUC770N ACTIVITY. TO ENSURE THE SURVIVAL OF DESIRABLE
PERIODICALLY AND AFTER EACH RUNOFF -PRODUCING RAINFALL OF SEED APPLICATION, IN ACCORDANCE W/ VESCH STD 3.35.
TREES WHERE THEY WILL BE EFFEC77VE FOR EROSION AND SEDIMENT CONTROL,
* �
EVENT. ANY NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE
WATERSHED PROTECTION, LANDSCAPE BEAUTIFICATION, DUST AND POLLUTION CONTROL,
NOISE REDUCTION, SHADE AND OTHER ENVIRONMENTAL BENEFITS WHILE THE LAND 1S
OPTIONAL STONE COMBINATION
EFFEC77VENESS OF THE EROSION CONTROL DEVICES SHALL BE MADE O PERMANENT SEEDING SCHEDULE
IMMEDIATELY.
BEING CONVERTED FROM FOREST TO URBAN -TYPE USES APPLIES IN TREE -INHABITED
NO SCALE
AREAS SUBJECT TO LAND DISTURBING ACT1VI77ES.
(STD. & SPEC. 3.32 OF VIRGINIA EROSION &
3.39 DUST CONTROL:
+0' +s'
SEDIMENT CONTROL HANDBOOK, 3RD ED.)
REDUCING SURFACE AND AIR MOVEMENT OF DUST DURING LAND DISTURBING,
A A
DEMOL177ON AND CONSTRUCTION ACTIVITIESS, TO PREVENT SURFACE AND AIR MOVEMENT
OF DUST FROM EXPOSED SOIL SURFACES AND REDUCE THE PRESENCE OF AIRBORNE
SUBSTANCES WHICH MAY PRESENT HEALTH HAZARDS, TRAFFIC SAFETY PROBLEMS OR Source: Va. DSWC
HARM ANIMAL OR PLANT LIFE. DUST CONTROL MEASURES SHALL BE EMPLOYED TO FLOW _ ti
PREVENT SURFACE AND AIR MOVEMENT OF DUST DURING CONSTRUCTION. MEASURES z.s
EMPLOYED SHALL BE IN ACCORDANCE WITH THE VESCH.
F'•LAry """"j
--- -
O CS/R[i_ INLET
Lc
CUSS I RIPRAP
I «' VDOT OR COARSE AGGREGATE
CACEE SILT FENCE E IN HORSESHOE " WHEN
TO REPLACE
FLOW IS EXPECTED
,-
HIGH VELOCITY OF
SEC77ON A -A
PIPE OUTLET TO FLAT AREA MIN NO DERNED CHANNEL
- CONCRETE
Lo--
WIRE SCREEN OR 45
BLOCK
GRAVELY FILTER
COARSE AGGREGA7E.
j PLAN
BLOCK &
GRAVEL CURB INLET
SECTION A -A
SEDIMENT FILTER
IP
oP PIPE OUTLET COND1770NS s.ta-t
un 1c11
NO SCALE
1. SET POSTS AND EXCAVATE A 4 X4 2. STAPLE WIRE FENCING TO
TRENCH UPSLOPE ALONG THE LINE THE POSTS.
OF POSTS
FLOW
STONE 70' MIN,
CONSTRUCTION
ACCESS 3" SM-2A ASPHALT TOP
COURSE EXISTING
27. 2R PAVEMENT
6" MA. 21A AGGREGATE BASE
PROFILE
STONE 70' MIN.
CONSTRUCTION ASPHALT PAVED
ACCESS F-0 WASHRACK
EXISTING
2% 1�S PAVEMENT 24 12' MIN.'
7
nJ
*MUST EXTEND FULL WIDTH LO `POSITIVE DRAINAGE
OF INGRESS AND EGRESS I TO SEDIMENT
OPERATION j TRAPPING DEVICE
PLAN
12' MIN. POSITIVE DRAINALI
2% TO SEDIMENT
TRAPPING DEVICE.
FILTER CLOTH `
SECTION A -A
A nninitnuu water tap of 1 inch must be installed with a ntinimmt 1 itch bal(cock
shutoff vah•e supplyillt a wash hose with a diameter of 1.5 itches for adequate
constant pressure. Wash water must be carried away from the enhance to an
approved settliue area to reuiove sednneut. All Sediment shall be prevented h otu
adetuts SMnu drahts, ditches or watercourses.
PAVED WASH RACK
TABLE 3.39-A
ADHESIVES USED FOR DUST
CONTROL
Water
Application
Dilution
Type of
Rate
dhes ve
Adhesive
(Adhesive: Water)
_
Nozzle Gallons Acre
� /
Anionic
Asphalt Emulsion
7:1
Coarse Spray
1,200
Latex Emulsion
12.5:1
Fine Spray
235
Resin in Water
4:1
Fine Spray
300
Acrylic Emulsion
(Non -Traffic)
7:1
Coarse Spray
4�0
Acrylic Emulsion
(Traffic)
3.5:1
Coarse Spray
350
Source: Va. DSWC
J. ATTACH THE FILTER FABRIC TO
THE WIRE FENCE AND EXTEND
1T INTO THE TRENCH.
SUPER SILT FENC
(WITH WIRE -BACK
NO SCALE
4. BACKFILL AND COMPACT THE
EXCAVATED SOIL.
I' FLOW G
- EXTENSION OF FABRIC AND
WIRE INTO THE TRENCH.
.05-
SCOTT/R. 0b1.LINS2Z
No. 35791 ,�
10/2/20 k4j
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SHEET NO.
3
H
' — — — — I / / / y \ \
,SCft TYPE`
SOILTYPE
'� /--------- 36D-- /
/ PROPOSED STOCKPILE / / ' i' \
PROPOSED 16" DIVERSION
SURROUNDED BY SILT FENCE — — \ / — / / \ / D PROPOSED WITH PLEASANT
PROPOSED WITH PLEASANT — — �\ \ \ /
GREEN PHASE I CONSTRUCTION
/ GREEN PHASE I C STRUCTI9N' — — DC
// X
�
PS
/EXISTING FENCE \ \ \
TO BE REMOVED \ \
� WITH PLEASANT
GREEN PHASE I
CONSTRUCTION
X
><400,
/ \
I/ 3' WIDE VDOT CL. Al, EC-1 STONE OUTLET
X
PROTECTION PROPOSED WITH PLEASANT
/ GREEN PHASE I CONSTRUCTION
SAFETY FENCE &SIGNS
/ I SAF `WARNING QUICK SAND, KEEP
SOILTYPE / I OUT" PROPOSED WITH PLEASANT
17 / GREEN PHASE I CONSTRUCTION
SOIL BOUNDARY LINE (TYP.) / /
PROPOSED BAFFLES
/ PROPOSED 1A" DIVERSION / \ BASINSEDIMENT
D PROPOSED WITH PLEASANT / I \ " / / PRO OS D W TH
GREEN PHASE I CO PHST UCTION /
-�� / N IIR / WPO 201900003 LIMITS WPO 201900003
OF DISTURBANCE TOTAL AREA= 12.37 ac.
SILT F�NCE w/ WIRE
SILT FENCE w/ WIRE' I /\ / SF BACKING� PROPOSED
BACKING PROPOSED / WITH PLEASANT GREEN /
WITH PLEASANT GREEN PHASE I CO``NNSTRUCTION /
PHASE I CONSTRUCTION S ' / `' / EXISTING FENCE SOILTYPE
X / TO BE REMOVED w/ WIR �\-F\ / — CONTRACTOR SHALL INSTALL THE (3) 8'(h
�� A \ 'FBACKING BOX CULVERTS PROPOSED WITH THE CON
\ I J�// — — AFTER THE DIVERSION CHANNEL HAS BEE
/ Tp TR@E PROTECTIO '�C /\ y� �� f. OPERATIONAL. AFTER THE PROPOSED
100' WPO--I",I WALLS, AND CULVERT RIPRAP HAVE BEE
THE ESC INSPECTOR HAS GIVEN APPROV
BUFFER, TYP. / I / `PLEASANT GREECONSTRUCTION N PHASE I I / / Y\ Ir \I / CANNEL CAN BE REMOVED AND NORMAL
I _ y
325 I992 3.25 STREAM FLOW DIVERSION EMBANKMENT
TO BE EXISTING UNDISTURBED EARTH, 5
DIVERSION CHANNEL CROSSING OR NON -ERODIBLE, WATERTIGHT
NTH 0���
DIVERSION CHANNEL CROSSING
MATERIAL
ACCEPTABLE LININGS sF TRIPLE BOX sF O
FORM LOCATION now (CROSS SECTION A —A OF PLATE 3.25-1) CULVERT I�
OF FLOW BARRIER II ¢ SCOTT R. LINS'Z
SILT FENCE 1� V - F OL) No. 35791 11,
VVVV sL7 FENCE FOET vGS SILT FENCE EX. GROUND
•SEE PLATE. T.2r-2 DIVERTED STREAM '�i' 10�2/20 414
ioa CROSS-SECTION TYPE A DIVERSION o�,'
A -A CHANNEL WITH TYPE
_ - POLYETM'LENE (a ua MN)
C LINING (SEE DETAIL (LOOKING SOUTH) �S'SIONAL F'�GS
OR 3.25-2 THIS SHEET) N.T.S.
�IICCSUNJ'A'G ,5T� _i cRAss LNER STREAM DIVERSION DURING CULVERT INSTALLATION DETAILS
## SPEC. 3.24
(TO BE LOCATED AT/ R'�E 2'
ORIGINAL SIREAMRED _ RIPRAP E%ISTING GRWND �' EXrnNG GROUND
MR INITIAL CROSSINGS) /�� AT
C �'nDn TRIPLE CULVERT INSTALLATION NOTES:
f _ •• 1. CONTRACTOR SHALL INSTALL AND MAINTAIN A STREAM FLOW
/ • ___ DIVERSION PER DIVERSION CHANNEL CROSSING VESCH DETAIL
3.25-1 AND 3.25-2 DURING ENTIRE TRIPLE CULVERT
CONSTRUCTION OPERATION.
/ - 2 SILT DSTREAM DE VERS ONCHANNELSHALL BE . .ED ON T HE SIDES PROPOSCONTRACTOR SHALL
FLOW CARRIER TYPE B DIVERSION INSTALL AND ADJUST SILT FENCE AS NECESSARY TO PREVENT
SOIL FROM ENTERING THE STREAM. STREAM DIVERSION TO BE A
/ 7 RIPW FILTER CLOTH TRAPEZOIDAL DITCH WITH 2:1 SIDE SLOPES, A 5.5' DEPTH AND A
6' WIDE CHANNEL BOTTOM. RIPRAP SHALL BE PROVIDED WITHIN
/ ORIGINAL THE EXISTING STREAM BED AT THE TRANSITION FROM THE
STREAM- z" EXISTING STREAMBED TO THE PROPOSED DIVERSION CHANNEL,
BED E%ISTINC GROUND '� �' EX9MnNG GROUND AND AT THE TRANSITION BACK FROM THE DIVERSION CHANNEL TO
THE EXISTING STREAMBED. AN APPROVED FLOW BARRIER Ln
(SANDBAGS, PLYWOOD, JERSEY BARRIER, OR EQUIVALENT) SHALL z W
BE INSTALLED BEHIND THE RIPRAP .ITTRANSITION.THE DIVERSION z Q
SHALL BE A TYPE C DIVERSION (i.e. IT SHALLHALLZ HAVE A ROCK OR O
SANDBAG LINER). O Q
/ \\ 3. THE DIVERSION CHANNEL CROSSING MUST BE OPERATIONAL z
FLOW TYPE C DIVERSION BEFORE WORK IS PERFORMED IN THE STREAM (CONSTRUCTION OF U � LU
/ DIVERSION SHALL BE PERFORMED "IN THE DRY'). H w m g
!' 4. UPON COMPLETION OF THE TRIPLE BOX CULVERT CONSTRUCTION, 0 U) f
A f fttPRa FILTER CLOTH O
AND WITH ESC AND VDOT INSPECTORS' APPROVALS, THE X� z U
�\ ROCK OR sNR G LINER CONTRACTOR SHALL REMOVE THE STREAM DIVERSION AND ALLOW ^ 0 < a
STREAM FLOW TO RESUME THROUGH THE EXISTING CHANNEL & f
` TRIPLE BOX CULVERT. > > z U`)
- EXISTING GROUND Exlsnrlc cRouao 5. ONCE THE STREAM RETURNS TO ITS NATURAL ALIGNMENT AND w
PASSES THROUGH THE TRIPLE BOX CULVERT, THE CONTRACTOR W a
\\\ _ FLOW BARRIER SHALL REMOVE THE TYPE C DIVERSION (RIPRAP OR SANDBAGS), /4/
PLYWOOD SJER16A05. Fr� ANY SEDIMENT LADEN MATERIAL LOCATED WITHIN THE TEMPORARY ii w
PLYWOOD, JERSEY ILIT
BARRIERS OR SHEET RENCNINGNC DIVERSION AND THE TEMPORARY DIVERSION's EMBANKMENT
uHG) oFERAnou (INCLUSIVE OF A NON -ERODIBLE, WATERTIGHT MATERIAL IF LU
FORMER LOCATION PLACE RIPRAP • 6' MINIMUM OR WIOTH OF EXISTING STREAM WHICHEVER IS UPS APPLICABLE). THE CONTRACTOR SHALL REPLACE THE TEMPORARY
OF.FLdM armlER AT TRANSITION DIVERSION WITH COMPACTED STRUCTURAL FILL PRIOR TO
•• ENTRENCH SILT FENCE AND FILLER CLOTH IN SAME TRENCH INSTALLING THE ROAD's EMBANKMENT.
PERSPECTIVE VIEW / 7
rce: Va. DSWC Plate 325-1 Source: Adapted from VDOT Standard Sheets Plate 3.25-2000
CONCRETE
ROAD PLAN
LED AND IS
5, WING / /
/
-LED AND / ) / ////--- /' fY
)IVERSION
)NDITIONS / / / �� i / / - ' _ — —CD
Is
Wl I h WPU LU1yUUUU3 I HEC-WAS ANALYSIS PERFORMED BY I I / I CI I / - •V _--- -- --� /----""- -""� "- -- --- ----- - C / . / / �� / _. _ — /
COLLINS ENGINEERING IN APRIL 20A, TYP. I / -,� ,IY�\ ` w/ WIRE—L
PROPOSED TRIPLE I I ACKINGRE
BACKING S / BOX CULVERT �- PROPOSED IN-STREA RIPRAP \ _ _ — — — — _- — —
' I RR AT TRANSITIONS (BEGINNING / ' L9
CONCRETE BOX 1 &ENDING) OF UTILITY STREAM / / _ — — — — _�
CULVERTS X — _ / CROSSING DIVERSION
/------- \ 7-
CLEIMItSARING OF TREE _/ / �C o e 684.0 \\ // // / / /= S ----- �� — \ // �
CLEARING (TYP.) / 'f �yr�'� — o � / � —`� /
PROPOSED WING WALL / ' / ,. / ,� \� \ / / / / /� / / / — — — — — \ \ \ \ \ �J co
PROPOSED VDOT STD. EC 1, CLASS I \ LIMITS OF J / / � � � � � � � \ \ � I i � � m
/ SOILTYPE RIPRAP WITH A TYPE B INSTALLATION TO RR ` �' \ \ \ STREAM, TYP. \ SOILTYPE / / — 1 / ��/ / / / / 1
\ 17 AV BE INSTALLED BETWEEN THE PROPOSED / A �� A v V 7 _
WING WALLS FOR INLET PROTECTION / •'� \ \ \ / \ / / / co
I \ PROPOSED VDOT STD. EC-1, \ \ \ � � s,�-/ / / — � \ \ \ \ \ _ / I�
w/ WIRE RR CLASS I RIPRAP WITH A TYPE \ \ \ \ / / / -� �' W m / / / / — _ \ \ \ / 3
BACKING / B INSTALLATION TO SERVE - v V A V — / / A / /R3✓g / / /� v \ \ V A Q
690.0, / AS OUTLET PROTECTION \ \ \` \ \ \
V J I A \ LIMITS OF \ \ \ j i (L=60 , W=60 , D-2) \ V A / // // A / / / / / / A V A \ V — — Q
\ \ STREAM,TYP. \ / r "�- T TREE V A / \ l / \ V \ V A CV
�� 00
OTECTION \ ° \ J WP0 20190002 L MITS OF�
_ DISTURBANCE TOTAL AREA=2.36 aC. / / /// I A A v v\ V Q
SANDBAGS PLYWOOD, JERSEY T' V A / / V ( / LINT$ OF TREE I / I /� — — — A \ \ \ V A \
\ \ — PROPOSED FLOW BARRIER / �(-
v - v A v // CLEARING (TYP.) _
� � � SILT FENCE w/ WIRE � / �
\ \Y \ \( \ 5 BACKING PROPOSED \ / I (( /n / G. �' \ \ I SOILTYP \�- \ \\ \ \ + •--
1 A -BARBERS, O(2 EQUIVALENT) I ) A6 // / \ ( ( / I v- W
\ WITH PLEASANT GREEN / I I ( \ t \ \
/ \ PROPOSED IN -STREAM: RIPRAP \ \ T _J
/ / /I
AT TRANSITIONS (BEGINNING USC � I PHASE I CONSTRUCTION \ /� \ \ / / / 1 / ( / / I TREE ) � 37D3 \ \+ S a'/ WIRES \ \ J O -
/ A & ENDING) OF UTILITY STREAM I I A A _ — — _ /// I / I / / / / / I I �ROTrCT� / / �) A - BACKING A A / I I I I Q
V A \ v CROSSING DIVERSION — V — — \ V 0
PROPOSED ALIGNMENT OF ' — THE FUELING TANK SHALL BE COMPLETELY SURROUNDED BY A / / / / / / / / / I I� I I / \ \�- \ /1 3 I U)
\ / \ { 2' DEEP, T WIDE EARTHEN BERM WITH A HEAVY MIL r ,.�, d / / I I (n I I I I I / / v A �- \ i LL.I
I \ \ STREAM DIVERSION WHILE \ — — — — POLYETHYLENE LINING, OR BE PLACED IN AN IMPERVIOUS I °j / / / / /
\ I I A 1 A CULVERT IS INSTALLED. DETAILS / / / / / / I / I / I / / \ v \ L�- v Z _
I OPEN -TOP DUMPSTER WITH A SIDE DOOR. THE PROPOSED �/
\ V I /� / 1 \ LL
&NOTES ON THIS SHEET. ` � BERM OR DUMPSTER SHALL CONTAIN FUEL IN THE EVENT OF A -_ �L9 W
v \ / WPO 201900603 LIMITS / / / / / V —
\ � I I I \��� j� � �Xy�� SPILL. CONTRACTOR SHALL ENSURE VOLUME CAPACITY IS /
AAVA \ \ \ \ \ A \I I I imom on A' TREE 10% LARGER THAN THE MAXIMUM VOLUME OF STORED FUEL. / OF DISTURBANCENOW
\ V ► I 1 Tp / / TO AL AREA=12.37 ac.
/--- — \ / Q
\AVVA\AA\ \\ \\ \ A A \ PROTECTION / ----- A� / �� // / / U -
\ _ SOILTYPE _ — — — — �C \ / / / /' / I I I / ' / \ \ I I ° \ = L I LLJ
UTILITY STREAM DIVERSION NOTE: D — \
/---�3 ---__ — 94 ---- 692—yT - / / SILT w/W"E / ,I I I I I '/ / / \ \ �( Q U z
\ CONTRACTOR SHALL REMOVE PROPOSED !\
FLOW BARRIER &STREAM DIVERSION ONLY / / / — — — — — — — — — STa ` �C �Y / / SF BACKI GP / I I I I I/ / / / SOILTYPE
AFTER THE TRIPLE BOX CULVERT _ _ _ l Y1 I / 25B A / .
/ / — X�P WITH P EAS NT GREEN I / / / I I / ' _ _ �(
\ \ \ \ \\ \ \ INSTALLATION HAS BEEN COMPLETED, AND _ �— — — — 10A�♦ _ / PHASE IICONSTRUCTION / �V
THE ESC INSPECTOR GRANTS APPROVAL. / I / -- � 69a// / l// I / / \ \ \ l l w u
/ i / / / L P I /
p---
v 9 KIN� v / / / �— / I I / /� / �sF"gWI� v Q Z
ACI I �; l O
k
j` / ,/
Lu
REBE CUT AND US D Lu II I F`� /
O
AA T _
% — — w/ MIRE / CRS ♦ B yr� �' J / 7' / / AS FILL FOR THE CONNECTOR
BA TWIN — ���� PROTECTIONV /j / / j ROAD CONSTRUCTION. � `
A j�. // / // / W
A A v w/RE / / / _ / / / /k / '' nn I
PROPOSED LIMITS OF DISTURBAN E EXPANSION �/ / / / / / � \ _ _ ACKIN / / / `' � / / / jc/ / EXISTING STRUCTURES AND w
ASSOCIATED WITH THIS PLAN. TOTAL AREA=1.90 ac. �/ / / \ ' v / /� / /\ z/ / / DRIVE AY 0 BE REMOVE
ESC PHASELST y1 / / �L/ L
SOBARt . ac/ / p \ W LOCATION OF PORTA-POTTIES W / T ,, ^^
LOCATION OF FUELING AREA — _ R�'N ` / / ' // I �' I \ / PROP ED Li)'x Q' / /-'� -- -- Lu Q
SOIL
L BOUNDARY LINE (TYP.) CIP LOCATION OF 15cy DUMPSTER
— — — — — — PROPOSED CONC. WASHOUT AREA /
�/
UJ
— -- — — PROPOSE[5 CL. Al RiFRAP OUT(=ALL �- s
— — —
-SO1�T1'YE� / — / / / / (WS-3', W2=7', L=6', D=2') — / \ ( \ / / — — J
ESQ /»/ \ \./
\� PROPOSED CE PROPOS�D 12'x70' MIMU AVEM� D / i/
_ _ _ _ � � �_ CONTRACTOR - CONSTRUCTION ENfjRANC� ITH WASHRACK. // �1� /H ' � � \��'� y O / / � O
PROPOSED TEMPORARY CULVERT / / / \ / o — $Q� / T�S -/ /3 O N
\ — — STAGING AREA ) \ .,
\ — ' INV. IN=705.0, INV. OUT=7�04.0
12" CMP, L=1- 6', 6.25 /o
EXISTING FIRE HYDRANT
L w
EXISTING FIRE HYDRANT \ v
NO �
' \ /PROPOSED 12'x7O' MINIMUM W \ ���<QF JOB NO.
GRAPHIC SCAL ' / / \ PAVED CONSTRUCTION CE F
^'dbr4. ENTRANCE WITH WASHRACK. \
\
\ 182154
20 0 4F0
SCALE
1"=40'
SHEET NO.
( IN FEET )
1 c = ft. // \ / \ 4
�T TYPICAL ORIENTATION OF
SEDIMENT TRAP #1 DETAIL ��c�-� \
--
� SCALE 1"=30' _ - _ \ ` ����� . zFi 046
- -
/ 694 - PROPOSED LINED EMERGENCY SPILLWAY WITH y:T.P Cyr �f
X`� TREATMENT 1
PROPOSED STOCK P E — _ i — * — \ \ _ — _ _ SIDE SLOPES, CREST ELEV.=6gT�C
/ / SURROUNDED BY SILT N E L - _ - _ , _ _ - �-- _ (SOIL STABILIZATION BLANKET
- / \ \\ \ \I D -98
/ PROPOSED WITH PLE }
/ �SCOTT R. LINS'Z
GREEN PHASE I CONSTR TI ` - C / \ \ \ — — — _ 9a \ — -6 SHALLOW 35791 ,a
SLOPE ,,,!'A 10/2/20
V PROPOSED idWIDE GRASS ,3. 01
69$ \ J ON SyBLLQg SLOPES, STRIPS OF Sj0 gR I
LINED TOP OF DAM ELEV.=698' �+ :M NEmNc PROTECTIVE COVERINGS NAL
PROPOSED PERMANENT SWM FACILITY 690 \ / '� f MAY BE APPLIED ACROSS
EMERGENCY SPILLWAY, RISER & BARREL 24 + THE SLOPE.
/ I 3 -I ✓ 1 I \ \ �: OUTFALL SYSTEM TO BE CONSTRUCTED t� -
/ I / / •/ \Ix WITH THE TEMPORARY SEDIMENTTRAP TOPREVENT ADDITIONAL DISTURBANCES AT
�. J
THE TIME OF THE TRAP's CONVERSION TOA
/ PERMANENT SWM FACILITY. THE \ 698 �( I BERM
EMERGENCY SPILLWAY SHALL BE UTILIZED
AS PART OF THE SEDIMENT TRAP DURING \ \ \ \ / WHERE THERE IS A BERM AT THE 70P OF THE SLOPE,
BRING THE MATERIAL OVER THE BERM AND ANCHOR IT
CONSTRUCTION. THE RISER SHALL REMAIN °a• - +� \ \ BEHIND THE 3ERM.
c
WATERTIGHT &SHALL NOT BE ACTIVATED _
UNTIL THE ESC INSPECTOR APPROVES THE 3
CONVERSION OF THE TEMPORARY TRAP TO ��\\
A PERMANENT SWM FACILITY. STEEP
Sediment Trap #1 Design
/ IP IP OPE
k IP ON S SLOPES, APPLY
Ip 3' WIDE VDOT CL. Al, EC-1 STONE OUTLET drainage area acres <3 1.1 Y''R PROTECTIVE DI COVERING FLOWPARAEL
_ X 9 (acres) ( ) TO THE DIRECTION RE FLOW
T- PROTECTION PROPOSED WITH PLEASANT trap Volumes: CREST OF STONE WEIR AND ANCHOR SECURELY.
/ / GREEN PHASE I CONSTRUCTION / I OROU D 0
elevation (ft) area (sf) volume(cf) volume(cy) AND a
/ "' � I �� •.• / /� � � J � SAFETY FENCE &SIGNS � �,°• Z
WARNING QUICK SAND, KEEP 690 157 0 0.0 - - - Z 0 p
/ W OUT" PROPOSED WITH PLEASANT 692 525 646 23.9 _ o z
' DRY STORAGE N VARVffiE O-
/ GREEN PHASE I CONSTRUCTION H
/ Ip W / / 694 1125 2,258 83.6 v g w
696 1930 5,277 195.5
F�1 w
PROPOSED BAFFLES 698 3351 10,493 388.6 WET STORAGE A, Aux BRING MATERIAL DOWN TO A LEVEL AREA BEFORE` V / 0
TERMINATING THE INSTALLATION. TURN THE END Z Q V
/ v FLTER CLOTN pEWNAL O d
cRwxO UNDER 4' AND STAPLE AT 1Y INTEMALS. U)
Wet storage: .SEE PATE 3.13-1 COARSE AGGREGATECIASS I RPRAP - .. Of --i EL
wet storage required (cy) (67*DA) 73.7 a
SEDIMENT BASIN DITCH FLOW
/ e♦ / / bottom of stone weir (ft) 694.0 o
k PROPOSED WITH w
� x. � � i IN DITCHES, APPLY PROTECTIVE COVERING .�.
/ wet storage provided at this elevation (cy) 83.6
WPO 201900 0 I WPO 201900003 PARALLEL TO THE DIRECTION OF FLOW.
slope of wet storage sides 2:1 USE CHECK SLOTS AS REQUIRED. AVOID w
/ OF DISTURBANCE JOINING MATERIAL IN THE CENTER OF
TOTAL AR�A=1 .37 r Min. weir length (ft) (60A) 6.6 (20' Proposed) THE DITCH IF AT ALL POSSIBLE.
SILT F&NCE w/ WIRE - dry storage: bottom of trap elevation (ft) 690
SILT FENCE w/ WIRE SF BACKIN PROPOSED dry storage required (cy) (67*DA) 73.7 bottom trap dimensions: 24'xT
J( WITH FILE SANT GREEN
WITH PBACKING PROPOSED EASANT GREEN Sp / k Y� / \ PHASE I CO STRUCTION / dry crestorage provided at this elevation (cy) 2118.4 top width of dam (ft) of stone weir 697.0 top of dam elevation (ft) 698, -
PHASE I CONSTRUCTION / %� / ' -� '#\� J slope of d storage sides 3:1 to try dimensions 103'X43'
( ' \ _ „��
f\ w/ WIRE �
r \BACKING
r "CCCC�I"`CCC���
\ I
� TP TRfE PROTECTO � �O /• �... ���' � / / �
100' WPO J PR'OPOSED WITH I / i • — % / / _
J / PLEASANT GREEN PHASE f \ \ . S� . \ PROPOSED 100JYR FLOODPLAIN PER — — — =
BUFFER, TYP. \ NSTRUCTION O Cd� 00 HEC-RAS ANALYSIS PERFORMED BY / i I / — 0) o
CONSTRUCTION��,. I Oo 0 00 0i n o> \� JCOLLINS ENGINEERING IN APRIL 2019, TY0. / , _ / H
LIMITS OF TREE ( y t A f OO OO \ d o0 00 00 00 oO o0 00 OO ( O O OO OO o / EXIS NG 100-YR FLOODPLAIN PER / / - — / / p o
CLEARING ASSOCIATED �h + G� <x Oo OO o OO 00 O J HEC- ANALYSIS PERFORMED BY
WITH WPO 201900003 \ EXISTING 100-YR FLOODPLAIN PER\� ` \I \ �� FOo OOo \ Oo oO
— HEC-RAS ANALYSIS PERFORMED B'Y / +\ o COLLINS EN INEERING IN APRIL 2019, TYP.
o w/WIREoOOOOOaour, / � COLLINS ENGINEERING IN APRIL 200, TYP. J. \ XX
/ O _l 'ti ', ACKING
rW/ WIRE
BACKING
LU
�
/ ------ LIMITS OFTREE
�
✓ - V CLEARING (TYP.)
Sr
1J'
\ \\ J PROPOSED VDOT STD. EC-1, CLASS I „ / i > o LIMITS OF / / \ \ N
V A RIPRAP WITH A TYPE B INSTALLATION TO RR <' -� v \ STR�AM, TYP.
v BE INSTALLED BETWEEN THE PROPOSED \
\ ire ✓ / / _ \ \ ! eri < �7
WING WALLS FOR INLET PROTECTION / - - PROPOSED VDOT STD. EC-1, \ \\ 1 / / \ / / - i _ — Z
CLASS I RIP
RAP WITH A �I'
B INSTALLATION TO SERVE
AS OUTLET PROTECTION � \\ V A� \ \ \V
\ \ LIMITS OF (L=60', W=60', D=2') / / 0
V A STREAM, TYR. \ T TREE V A / j ^ V / \ A A )
V v s / / \ / n / / \ v _ v N J
orEcrloN � v \ v� / � ; - , , v � � / � v v v � v A � N
WPO 20190'0027 LIMITS OF� / / / / / / A\ V A \
�� V A \ ✓ i/ DISTURBANCE TOTAL AREA=2.36 ac. /
2� V Av \�� / /ii I / l -702- Q
\ \ \ \ / /x LIMITS OF TREE \ 71 / + \
SILT FENCE w/ WIRE \ ..
BACKING PROPOSED CLEARING (TYP.)
f\ �< _- ) WITH PLEASANT GREEN
\ J PHASE I CONSTRUCTION V / / \ I \- A \ I�
/ / v oa v �, // � r _ U
r
I / / I rR E \ v v+ 5 �/ wIR� v v J
BA�61NG
_ V A \ \ / / �V'• A Oo O THE FUELING TANK SHALL BE COMPLETELY SURROUNDED BY A / / / / / / / / I / — \ \ �- A A 1 3 U)
\ Q \ Oo 2' DEEP, T WIDE EARTHEN BERM WITH A HEAVY MIL r / / / / / J J '
\ - / / / / \
POLYETHYLENE LINING, OR BE PLACED IN AN IMPERVIOUS ) � / / / \ \ \+ • '.
LU
OPEN -TOP DUMPSTER WITH A SIDE DOOR. THE PROPOSED
\ \ o BERM OR DUMPSTER SHALL CONTAIN FUEL IN THE EVENT OF A / / I _ O
v WPO 201900603 LIMITS / j / / / / PS V - -
\ L9
SPILL. CONTRACTOR SHALL ENSURE VOLUME CAPACITY IS / / �/ � / / / �- \ � O
\ \ \ J� • - - O �__ _ 10% LARGER THAN THE MAXIMUM VOLUME OF STORED FUEL. OF DISTURBANCE
VA o v rREE _ ___ /// �/ I n I J J v v
O� TP ( TO AL AREA=12.37 ac. I /
O � / PROTECTION
/ / / I / / / - - - - v � I J ' -/� I LL1 LLJ
v AA V AAAA V A / �� Oo A UTILITY STREAM DIVERSION NOTE: O _ �,., -- - — — — V A V / / / } )� / / I I I / / / A \ / �%
\ \ \ \ CONTRACTOR SHALL REMOVE PROPOSED - 94 — — Y / SILT F NC w WIRE
%
FLOW BARRIER & STREAM DIVERSION ONLY \ ` `ESC PHASE II ST #1 - 'Y-�( / \ Q U
\ \ \ \ \\ \ \ SUBAREA-1.10 ac. _ — STi `� �Y / / S BACKIG POPbSED� / I J J/ % / ,{pCY \ / - Q L016
V \ \ AFTER THE TRIPLE BOX CULVERT t- - - — 9S WITH PLEAS NT GREENINSTALLATION HAS BEEN COMPLETED, AND - '\ \ - PHASE I CO STRUCTION / \ ITHE ESC INSPECTOR GRANTS APPROVAL.I N (/ / / O 7PROPOSED 1d0-YR FLOODPLAIN�P€R1116Oo \ - - 9 \ - = Tk -X / )/ / %` / / // ✓ \ ) / II .. ULHEC-RAS ANALYSIS PERFORMED BY O \ 7 _ O
o � B9B / ? - �x-X -X
COLLIN�NGINEERING II�'APRIL 2019, TYPE OOO �A g
\��'V/ / / / I ) // // /k/CKINF (� � U)
O0 k
Ul LUSED U
�Q-���0 w/NyIRE /CR �1 AV �e TP EE % / �/ 1 / l � l / / ASRFILL OR THE0 BE CUT CONNECTORl ,I LU
0-0-0-0V \ PRO ECTION / / r I I k l /
BACkINCj / A /// - W
_ BACK NG� / / / \ �� /// // // / // // EXISTING STRUCTURES AND
\ \ \ \ PROPOSED LIMITS OF DISTURBANCE EXPANSION / //
ASSOCIATED WITH THIS PLAN. TOTAL AREA=1.90 ac. / / \ / / /�/ / DRIVEWAY TO BE REMOVED.
LOCATION OF PORTA POTTIES W / /j/ LU
LOCATION OF FUELING AREA — _ RCy - / / / / 'F I PROPOSED LU'x / LLi v I
\ <\ \ \ \ \ \ \ \ \ \ / / ' qR / / / \ / U)
/ \ \ \ / / l / LOCATION OF 15cy DUMPSTER M D " " xl
p �
CONC. WASHOUT AR }1 J nN/ Q
PROPOSED CONC. WASHOUT AREA Lu 2
Q
'
X \ 0
PROPOSED PROPOSED 12'x70' MINIMU AVED—
/� CE / / I pas, ) \ /�PSt' /
CONTRACTOR CONSTR CTION ENTZNJC ITH WASHRACK. // M \ �Qpoy 7 / / CD
STAGING AREA / ) \ /i �,� / O
04
EXISTING FIRE HYb NT
h
i \ F-
ILL
EXISTING FIRE HYDRANT ` W (/ / \ 0 i
(A
PROPOSED 12'x70' MINIMUM JOB NO.
PAVED CONSTRU
GRAPHIC A / / j / \ sgnE / ENTRANCE WITH W CTION K. CE C �FFR 182154
40 0 20 40 Bo \ /Teo / \ C� v \ SCALE
111=40'
/ IN FEET // SHEET NO.
( ) / \ I /
0 ft. // \ / \ 5
PRE -DEVELOPMENT SWM PLAN:
SCALEI"=50'
POST -DEVELOPMENT SWM PLAN:
SCALEI"=50'
ra
1 _
EXISTING 100-YEAR FLOODPLAINNER
\ /HEC-RAS ANALYSIS
/ COLLINS NG ENGINEERING INAPRIL2019, TYP.
100' WPO /
BUFFER, I1'P.
- -_ - PROPOSEDIESC LIMITS OF LAND DISTURBANCE V �
ASSOCIATED WITH THIS PLAN (1.90 C.) NOT PREVIOUSLY
< COVERED UNDER A SEPARATE PERMIT. THIS ESC LIMITS
I _ - OF DISTURBANCE BOUNDARY IS USED TO DEFINE THE
BOUNDA ;FOR WATER QUALITY, TYPICAL.
LIMITS OF
STREAM, TYP.
\ \ - LOCATION OF
PROPOSED SWM,
\ \ PRE-JEV. _ - - - ACILITY
SUBAREA -A _ _ - - I ✓
CN 55
-Tc-0.15hrs
OVERLANt} HLow 4
STLEV.-i o
S
\_S
w
/
41
Pre -Development Impervious Area Summary
DA A (Water Quantity) \ I
Existing Impervious Areas 0 sf \
-.W,vyy
COUI\Tl' OF :1LBEYtARLE
P Department of Community Development
Construction Record Drawings (As -built) for VSMP
The following is a list of information required on construction record drawings for
stormwater facilities (reference Water Protection Ordinance 17-422). It is preferable that the
construction record drawing be prepared by someone other than the designer. Please do not
provide design drawings as construction record drawings.
A. A signed and dated professional seal of the preparing engineer or surveyor.
B. The name and address of the firm and individual preparing the drawings on the title sheet.
C. The constructed location of all items associated with each facility, and the inspection records to verify
proper dimensions, materials and installation. The items include, but are not limited to the following;
1. Inspection Records and photographs for pipe trenches and bedding, including underdrains.
2. Video Pipe Inspection for any pipes which are not accessible or viewable.
3. Updated Location with geo-coordinates of all facilities.
4. Verified Drainage Area maps for the drainage area treated, and for drainage to the facilities.
5. Current physical and topographic survey for all earthen structures. Ponds should include a survey
of the pond bottom. Surveys should verify pond volumes are per design. Corrections may be required
for alterations from the design.
6. Plants location and type.
.
7. Plans and profiles for all culverts, Pipes, Risers, Weirs and Drainage Structures - Display the
installed of drainage structures culvert/ i size weirs materials inlets or end treatment s
type 8 P Pe � ),
inlet and outlet protection, alignment and invert elevations compared to design.
8. Computations: For significant deviations from design, provide sealed computations verifying that
the as -built condition is equivalent or better than design.
9. Ditch Lines - Display the constructed location of all ditch lines and channels, including typical
sections and linings.
10. Easements -Show all platted ease ments with dead book references labeled Facilities and drainage
must be within platted easements. Provide copies of recorded documents.
11. Guardrail, fences or other safety provisions - Display the constructed location of all safety
provisions; fences, guardrail, including the type, length and applied end treatments, compared to
design.
12. Material layers - biofilter media, stone layers, sand layers, keyways and cores must be verified as to
material types and depths. Include inspection reports, boring or test pit reports and materials
certifications. Biofilter media must be an approved state mix.
13. Access roads - show location of access roads, surface treatment, drainage, etc, as applicable.
14. Compaction reports are required to verify fill compaction in dams.
15. Manufacturers certifications for proprietary BMP's certifying proper installation and functioning.
STORMWATER MANAGEMENT NARRATIVE:
OVERVIEW:
THE PROPOSED STORMWATER MANAGEMENT PLAN COMPLIES WITH PART IIB SWM REQUIREMENTS.
ADDITIONALLY THE CHANNEL & FLOOD PROTECTION REQUIREMENTS FOR THIS PROJECT ARE MET. PLEASE
SEE THE ATTACHED STORMWATER MANAGEMENT CALCULATIONS PACKET FOR ADDITIONAL DETAILS
PERTAINING TO THIS PLAN's WATER QUALITY AND QUANTITY COMPLIANCE.
WATER QUALITY SUMMARY
THE PROPOSED PLAN REQUIRES A TOTAL PHOSPHOROUS REMOVAL RATE OF 1.17 Ibs/yr. THIS TOTAL IS A
COMBINATION OF THE PROPOSED IMPACTS ASSOCIATED WITH THIS PLAN's EXPANDED IMITS OF
DISTURBANCE (0.80 Ibs/yr) AND THE PROPOSED IMPACTS FROM DISTURBING AN EXISTING/RECORDED SWM
FOREST & OPEN SPACE EASEMENT (0.37 Ibs/yr.).
THE STORMWATER QUALITY REQUIREMENTS FOR THIS DEVELOPMENT ARE MET THROUGH THE INSTALLATION
OF A PROPOSED LEVEL II BIORETENTION BASIN. THE BIORETENTION BASIN IS FED BY SUBAREA A & TREATS
THE VAST MAJORITY OF THE PROPOSED IMPROVEMENTS. THE BIORETENTION BASIN PROVIDES A
PHOSPHOROUS REMOVAL RATE OF 1.17 Ibs/yr.
WATER QUANTITY SUMMARY
THE PROPOSED PLAN CREATES ONE CONCENTRATED OUTFALL. THIS OUTFALL IS INITIALLY DIRECTED TO THE
AFOREMENTIONED BIORETENTION BASIN FOR WATER QUALITY TREATMENT, AND THEN IS DIRECTED INTO A
ROBUST MANMADE RIPRAP LINED OUTLET PROTECTION INSTALLED IN THE BED OF POWELLS CREEK.
THE PROPOSED STORM SEWER AND THE RIPRAP LINED OUTFALL PROTECTION ARE DESIGNED FOR THE
10-YEAR DESIGN STORM. THE STORM SEWER AND RIPRAP CONVEY THE 10-YEAR AND 2-YR 24-HOUR
POST -DEVELOPMENT STORM EVENTS WITHOUT CAUSING EROSION OF THE SYSTEM. BECAUSE OF THIS,
CHANNEL PROTECTION COMPLIANCE IS MET FOR THE PROJECT VIA 9 VAC 25-870-66 SECTION B. 1.a. THE
LIMITS OF ANALYSIS FOR CHANNEL PROTECTION IS SET BY SECTION B.4.a, OR WHEN THE SITE's
CONTRIBUTING DRAINAGE AREAS (SUBAREA A) IS LESS THAN OR EQUAL TO 1.0% OF THE TOTAL
WATERSHED AREA TO THE RIPRAP LINED BED OF POWELLS CREEK (3.18 SQUARE MILES).
THE PROPOSED STORM SEWER AND BIORETENTION BASIN OUTFALL DIRECTLY INTO THE RIPRAP LINED
OUTLET PROTECTION, AS DESCRIBED ABOVE. THE RIPRAP LINED OUTLET PROTECTION IS PROPOSED TO BE
INSTALLED IN THE BED OF POWELL's CREEK. THE STORM SEWER AND BIORETENTION BASIN CONFINE THE
POST -DEVELOPMENT PEAK FLOW RATE FROM THE 10-YEAR 24-HOUR STORM EVENT WITHOUT AN
OVERTOPPING, AVOIDING LOCALIZED FLOODING, PRIOR TO BEING RELEASED INTO POWELLS CREEK.
BECAUSE OF THIS, FLOOD PROTECTION COMPLIANCE IS MET FOR THIS PROJECT VIA 9 VAC 25-870-66,
SECTION C.2.a. THE LIMITS OF ANALYSIS FOR FLOOD PROTECTION IS SET BY SECTION C.3.c, OR WHEN THE
STORMWATER CONVEYANCE SYSTEM ENTERS A MAPPED FLOODPLAIN.
PLEASE SEE THE ATTACHED STORMWATER MANAGEMENT CALCULATIONS PACKET FOR ADDITIONAL DETAILS
V
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\ I \ C \
LIMITS OF
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Post -Development Impervious Area Summary - - -
DA A (Water Quantity) -
Existing Orchard Drive (Outside this Plan's VRRM Boundary) 1,875 sf
Proposed Sidewalk (Within this Plan's VRRM Boundary) 9,375 sf
Proposed Sidewalk (Outside this Plan's VRRM Boundary) 1,225 sf
Approved Sidewalk (Outside this Plan's VRRM Boundary) 1,100 sf
Proposed Roadway (Within this Plan's VRRM Boundary) 13,025 sf
Proposed Roadway (Outside this Plan's VRRM Boundary) 1,225 sf
Approved Roadway (Outside this Plan's VRRM Boundary) 5,025 sf
32,850 sf
General Construction notes for Stormwater Manaaement Plans
1. All dams and constructed fill to be within 95% of maximum dry
density and 2% of optimum moisture content. All fill material to
be approved by a geotechnical engineer. A geotechnical engineer is
to be present during construction of dams.
2. Pipe and riser joints are to be watertight within stormwater
management facilities.
3. For temporary sediment traps or basins which are to be converted
to permanent stormwater management facilities; conversion is not
to take place until the site is stabilized, and permission has been
obtained from the Count erosion control inspector.
Y P
WATERSHED SUMMARY
Area
1-year Flow,
Y
2-year Flow,
Y
10- ear Flow
Y ,
CN
ac.
cfs
cfs
cfs
DAA (Pre-Dev.)
55 0.15
0.03
0.05
0.16
DA A (Post-Dev.)
86 1.10
1.94
2.98
5.53
/
/
\ /
/ EXISTING 100-YEAR FLOODPLAI"ER
D BY
COLLINS ENGINEERING INAPRIL2019, TYP.
/ /WPO
100, /
PROPOSED 100-YEAR FLO DPLAIN PER BUFFER, "1lYP. /
HEC-RAS 'NALYSIS�'ERFORMED BY /
�� / COLLINS ENGINEERNG IN APRIL 2019, TYP. /
®0
cc
` 1
V A
- -- - _ PROPOSEDIESC LIMITS OF LAND DI TURBANCE �
ASSOCIATED WITH THIS PLAN (1.90 c.) NOT PREVIOUSLY
&§- < COVERED UNfER A SEPARATE PERM . THIS ESC LIMITS
OF DISTURBANCE BOUNDARY IS USEQ TO DEFINE THE
BOUNDARY FOR WATER QUALTTY, TYPICAL.
9� 1
POST-DEV.
SUBAREA A
1.10 ac.
CN=86
\ Tc-0 10 hrs.
°
1
FLOW w/ A - -
ELE
' M /
/ / I
Post -Development VRRM Impervious Area Summary
Boundary Defined by this Plan's ESC LOD (Water Quality)
Proposed Sidewalk (Within this Plan's VRRM Boundary) 9,375 sf
Proposed Roadway (Within this Plan's VRRM Boundary) 13,025 sf
22,400 sf
EXCERPT FROM APPROVED SUB 201600238 SHEET 1 WITH THIS PLAN's LIMITS OF DISTURBANCE OVERLAID:
SCALE 1 "=100'
THIS DEVELOPMENT IMPACTS 1.02 ac.
J�
OF SWM FOREST & OPEN SPACE AREA
`1
PRESERVED UNDER AN EASEMENT
RECORDED IN SUB 201600238. THE
IMPACTED AREA IS HATCHED BELOW.
THE RESULTANT LOSS IN WATER
QUALITY CREDITS WILL BE MITIGATED
WITH THIS PLAN's NEARBY PROPOSED
BIORETENTION BASIN.
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JOB NO.
182154
SCALE
AS SHOWN
SHEET NO.
6
LEVEL II CONNECTOR ROAD BIORETENTION BASIN DESIGN & REQUIREMENTS:
Treatment Volume (Per VRRM Calculations)
2,080 cf
Minimum Treatment Volume Required
2,600 cf
Minimum Forebay Volume Required (15%of TV)
390 cf
Forebay Volume Provided
598 cf
* Minimum Surface Area Required (Tv/Storage D
1,206 sf
Surface Area Provided
1,542 sf
Length of Shortest Flow Path
87 ft
Overall Length
108 ft
Shortest Flow Path / Overall Length Ratio ( > 0.8)
0.81
* Area based off 3' Mix at 25% porosity, 3" pea gravel at 2% porosity,
12" stone at 40% porosity & 12" of max. ponding
at 100% porosity
STORMWATER MANAGEMENT FACILITY GRADING
Area of
Elevation
Forebay Cell
Volume
(ft)
Contours (sf)
(cf)
691.5
-
-
692
-
-
693
-
-
694
-
-
695
9
0
696
109
50
697
256
227
698
1 500
1
598
Total Area of
Elevation
Facility
Volume
(ft)
Contours (sf)
(cf)
691.5
1,542
0
692
1,542
771
693
1,542
2,313
694
1,542
3,855
695
1,551
5,401
696
1,651
7,002
697
2,398
9,015
698
3,308
11,856
WATERTIGHT CAP
ON TERMINAL END
OF PIPE
Elevation
(ft)
Filter Cell
Contours
(sf)
Volume
(cf)
691.5
1,542
0
692
1,542
771
693
1,542
2,313
Excavation Zone
694
1,542
3,855
695
1,542
5,397
696
1,542
6,939
ponding Zone
697
2,142
8,773
698
1 2,808
111,240
9-B.3. Typical Bioretention Basin Berm
4' P-V.C. SCREW CAP
ON GRADE
4' P.V-C. NONPERFORATED
r STANDPIPE
456 WYE AND FITTING OR
IVALENT DIRECTIONAL
4NOUT TO CONNECT
ERDRAIN TO STANDPIPE
J�
F77-
LOG
u' PE FORATED SOHD 40
P.V.C. UNDERDRAIN
'S�(_ ,T If-'c-T 1NC7:;
Figure 9-8.1. 4" P.V.G. Cleatrout Detail
O O
VA DEQ STORMWATER DESIGN SPECIFICATION NO.9 BIORETEN71ON
PIPE FLOW
=777-i- -
^- . 4' DROP 1
_ --
_ . -- 7 GRAVEL DWPRRAGM
LEVEL SPREADER
FILTER FABRIC
SECTION A -A
2"
i
- - -
3' 2 3'
8'
SECTION B-B
CONCENTRATED FLOW CURBCUT
PRETREATMENT - GRAVEL FLOW SPREADER
NIS
( Modified) Figilre 9.9: Pre-Treatmenl - Gravel Flow Spreader for Concentrated Flow
RECOMMENDED
MAX 3:1 SLOPE
3' SHREDDED
HARDWOOD MULCH
LAYER
RIORFT'ENTION SOIL MEDIA
(LEVEL 2 MINIMUM 361
3' MIN PEA GRAVEL LAYER
12' GRAVEL SUMP
MINIMUM
(LEVEL 2)
TYPICAL BIORETENTION - LEVEL 2 WITH UNDERDRAIN
(SIDE SLOPE EXCAVATION
NEED NOT BE VERTICAL)
FILTER FABRIC (PLACED ON PEA
GRAVEL OVER UNDERDRAIN
ONLY, 1 - 2' TO EITHER SIDE)
IF NEEDED
PERFORATED UNDERDRAIN
PIPE (1 D' SPACING MAX)
IF NEEDED
Figure 9.4h: Typical Detail of Bioretention Basin Level 2 Design
STABILIZED EARTHEN
SPILLWAY
DROP INLET WITH
COMPACTED SOIL
AROUND STRUCTURE
(SEE SPECIFICATIONS)
STABILIZED
INFLOW
3
T'-'$IT'fF''T 1I--
INFLOW PRETREATMENT,
STONE SIZE, AND =
THICKNESS BASED ON
DESIGN FLOW (REFER TO -
PRETREATMENT DETAILS
AND SPECIFICATIONS) I P
IY SCHD 4C PERFORATED
UNDERDRAIN
NTS
PEA GRAVEL FILTER
LEVEL SPREADER OR
TABILIZED APRON
INEERED SOIL MEDIA
TIE UNDERDRAIN INTO DROP
INLET OR DAYLIGHT
DOWNSTREAM
Figure 9-8.4. Typical Bioretention Basin - Inflow & Outflow - Section
BIORETENTION BASIN DETAIL:
SC4LEI"=30'
\ \ ®Q 4 4 49
Via.
\ \ \ C
\ \ \ \ \ \ \
\ \ \
ONCE THE ESC INSPECTOR HAS APPROVED THE, \ \�
CONVERSION OF THE TEMPORARY SEDIMENT TRAP
\ TO A PERMANENT SWM FACILITY, THE CONTRACTOR a
SHALL REMOVE SEDIMENT LADEN MATERIAL AND
REGRADE THE AREA TO THE ELEVATIONS SHOWN )
ON THIS PLAN, INCLUSIVE OF A FOREBAY, &
ENSURE ALL STRUCTURES ARE FREE OF DEBRIS.
i
PROPOSED PRE-TREATMENT / / '\0
- FOREBAY CELL (390 [f
REQUIRED, 598 cf PROPOSED) a
PROPOSED GRAVEL FLOW SPREADER.
PROPOSED DESIGN INCLUDES A 12" DEEP
TRAPEZOIDAL DITCH (2' WIDE BOTTOM w/ 3:1
SIDE SLOPES) EXTENDING FROM THE PIPE �)
OUTFALL TO THE FOREBAY's BOTTOM. GRAVEL
FLOW SPREADER TO INCLUDE 12" DROP TO
THE FOREBAY's FLOOR ELEVATION OF 695.
/ J�
PROPOSED 06" SCHEDULE 40 PVC PERFORATED r I -
UNDERDRAINS 10' O.C., AS SHOWN, WITH 04" � 3�00
NONPERFORATED CLEANOUTS. r,
ED zo' WIDE EARTHE
GR WM ACCESS ROAD,
MAXIM Mzo°/aTHROUGH 3 25
SLOPE & %CROSS SLOPE. \
0' WIDE MIN. TOP OF
DA ELEV.=698.00', TYP. \ I 1
100, WPO
STREAM y/
BUFFER TYP. /1"
0
0
O
0
/ \ PROPOSED STORM
V
I ) 0
SEWER TO OUTFALL THE
CO)
BIORETENTION BASIN.
\
Oa
O
0
/C
EXISTING 100 YR. FLOODPLAIN
PROPOSED V WIDE FOREBAY INTERIM TOP OF DAM
PER HEC-RAS ANALYSIS
/i PERFORMED BY COLLINS
ELEVATION-698.0'. FOREBAY DAM TO INCLUDE A 10' WIDE
// ENGINEERING IN APRIL 2019, TYP.
VDOT CL AI RIPRAP LINED SPILLWAY, CREST ELEV.=697.0'
1 ( PROPOSED BIOFILTER TOP SURFACE ELEVATION=696.00% CONTRACTOR SHALL
/ / PROPOSED 100 YR. FLOODPLAIN /
\ EXCAVATE VERTICALLY BENEATH THE BIOFILTER FLOOR TOP ELEVATION TO A DEPTH
/ PER HEC-RAS ANALYSIS
( OF 4.5', OR ELEVATION 691.50'. CONTRACTOR SHALL BACKFILL THIS AREA STARTING
/ PERFORMED BY COLLINS i
\ I AT THE BOTTOM WITH 12" OF VDOT #57 STONE. THE PROPOSED UNDERDRAINS SHALL
ENGINEERING IN APRIL 2019, TYP.
BE PLACED INSIDE THE #57 STONE LAYER. THE CONTRACTOR SHALL INSTALL INSTALL
\`)
A 3" DEEP LAYER OF PEA GRAVEL OVER THE #57 STONE BED, WITH A 4' WIDE FILTER
I FABRIC CENTERED ON THE UNDERDRAINS. A 3' DEEP STATE -APPROVED BIOFILTER MIX
/
SHALL THEN BE PLACED ON TOP OF THE PEA GRAVEL. THE CONTRACTOR SHALL THEN
I\�
D 0 INSTALL A 3" DEEP LAYER OF SHREDDED HARDWOOD MULCH.
PROPOSED BIORLTER FLOOR AREA
(1,206 sf REQUIRED, 1,542 sf PROPOSED)
(0r,
\ PROPOSED MIN. 20' WIDE VDOT CL. Al RIPRAP
I LINED EMERGENCY SPILLWAY. SPILLWAY CREST
ELEV. OF 697.o' ESTABLISHES A MAXIMUM 12"
\ PONDING DEPTH IN THE BIOFILTER.
1
371
0 5d. PROPOSED SWM RISER, STR. BID 6. SEE PROFILE ON THIS SHEET FOR
/
DESIGN ELEVATIONS. SWM RISER TO INCLUDE A STATE APPROVED /
1 TRASHRACK. SEE NEXT SHEET FOR DETAIL, OR EQUIVALENT. THE RISER &
/
ITS BARREL SHALL BE FIRMLY EMBEDDED 6" INTO AN 8Tx8'Wx18"D
1 +.00
) REINFORCED CONCRETE FOUNDATION BURIED BELOW GRADE. CONTRACTOR
SHALL TIE PROPOSED BIOFILTER UNDERDRAINS INTO THE RISER. CT
/
v / I
(
PROPOSED VARIABLE WIDTH
\ SWM MAINTENANCE & 4i
\ ACCESS ESMT.
\ / STREAM,
TYP.
A C�
PROPOSED V IABLE WIDTH
FACILITY ESM EXTENDS TO VDOT PROPTYP. \ _ / 1 E\ \ /
R/W FOR ACCE S & MAINTENANCE. _ - - -L�1 +50 E
PROPOSED FOREBAY DAM TO INCU
WIDE VDOT CL. AI RIPRAP LINED S
CREST ELEV.=697.0'. PROPOSED B
INCLUDE 1' WIDE FOREBAY INTERII
DAM ELEVATION=698.0'.
PRO
PRE-TR
FOREE
PROPOSED GRAVEL FLOW'
PROPOSED DESIGN INCLUDES A
TRAPEZOIDAL DITCH (2' WIDE BOTT
SIDE SLOPES) EXTENDING FROM
OUTFALL TO THE FOREBAY's BOTTOf
FLOW SPREADER TO INCLUDE 12'
THE FOREBAY's FLOOR ELEVATIO
705
705
DE 10'
)ILLWAY,
PROPOSED
RISER,
\SIN TO
700
STR.
BID 6
700
I TOP OF
i - PROPOSE
OSE D-
\ GRADE
-ATM ENT
AY CELL
695
695
PREADEIL
12" DEEP
)Mw/3:1
THE PIPE
-
I. GRAVEL
DROP TO
690
XISTIN
690
GRADE
J OF 695'.
PROPOSED
06" SCHEDULE
40 PVC
PERFORATED
UNDERDRAIN
WITH
4" N
NPERFORATED
CUFANOUTS.
SEE
DETAIL ON
THIS SHEET.
685
685
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BIOFILTER SECTION
CONTRACTOR SHALL INSTALL A COMPACTED
CLAY CORE w/ A CUTOFF TRENCH.
EMBANKMENT TO BE IN ACCORDANCE w/ THE
DESIGN SHOWN ON THESE PLANS.
MIN. idWIDE TOP OF DAM ELEV.=698.0'. DAM
TO INCLUDE A zo' WIDE VDOT CL. Al RIPRAP
LINED EMERGENCY SPILLWAY. SPILLWAY CREST--
ELEV. OF 697V ESTABLISHES A MAXIMUM iz"
PONDING DEPTH IN THE BIOFILTER.
BIORETENTION BASIN PROFILE NOTES:
1. PROPOSED BIOFILTER TOP SURFACE ELEVATION=696.00'.
2. CONTRACTOR SHALL EXCAVATE VERTICALLY BENEATH
THE BIOFILTER FLOOR TOP ELEVATION TO A DEPTH OF
4.5', OR ELEVATION 691.50'.
3. CONTRACTOR SHALL BACKFILL THIS AREA STARTING AT
THE BOTTOM WITH 12" OF VDOT #57 STONE. THE
PROPOSED UNDERDRAINS SHALL BE PLACED INSIDE THE
#57 STONE LAYER. THE UNDERDRAINS SHALL BE SLOPED
TO DRAIN & DAYLIGHT TO THE RISER AND SHALL HAVE A
12" 4P57 STONE SUMP LOCATED BELOW THE INVERT OF
THE UNDERDRAINS.
4. PROPOSED CLEANOUTS SHALL BE INSTALLED IN
ACCORDANCE WITH THE DETAIL SHOWN ON THIS SHEET.
THE CLEANOUTS SHALL BE INSTALLED AT CRITICAL
POINTS ALONG THE UNDERDRAIN SYSTEM & AT
CHANGES IN DIRECTION OF THE PIPES.
5. THE CONTRACTOR SHALL INSTALL A 3" DEEP LAYER OF
PEA GRAVEL OVER THE #57 STONE BED, WITH A 4' WIDE
FILTER FABRIC CENTERED ON THE UNDERDRAINS.
6. A 3' DEEP STATE -APPROVED BIOFILTER MIX SHALL THEN
BE PLACED ON TOP OF THE PEA GRAVEL.
7. THE CONTRACTOR SHALL THEN INSTALL A 3" DEEP LAYER
OF SHREDDED HARDWOOD MULCH.
PROPOSED
00 GRADE 700
Q
a
695
2�'
695
XISTIN
GRADE
690
690
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PROFILE SCALES:
i;`5 <<H, BIOFILTER SPILLWAY
STR. BIO 4
700
rVDOT MH-1
700
RIM- 695.7
INV IN=
90.74' (0
LF HOPE
PROP
SED VDOT STD. E
1,
STR. BID
2
ROPOSE
D
INV OUT
690.64'
15" HDP
)
CLASS'I
I RIPRAP WITH A
PE
VDOT MH
1
GRADE
B IN
A I WIN T
RIM= 69
.24'
AS
OUTLET PROTECTIO
INV IN=6
9.60' (0
5" HOPE)
695(L
60', W-60', D-2')
INV OUT=
689.50' (
15" HDP)
/ /
_
695
690
E
ls'
0.70%
690
148.88'
OF 015"
ka
HDPE
0.70%
17.84' 0
015"-XISTINCJ
HOPE @
.39%
GRADE
685
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BIOFILTER OUTFALL
PROPOSED RISER, STR. BIO 6
048" STANDPIPE TO SERVER AS RISER STRUCTURE
RIM= 696.50'
INV OUT=691.50' (015" HOPE)
PROPOSED SWM RISER TO INCLUDE A STATE
APPROVED TRASHRACK. SEE NEXT SHEET FOR
DETAIL, OR EQUIVALENT. THE RISER & ITS BARREL
SHALL BE FIRMLY EMBEDDED 6" INTO AN
8'Lx8'Wxl8"D REINFORCED CONCRETE
FOUNDATION BURIED BELOW GRADE.
CONTRACTOR SHALL TIE PROPOSED BIOFILTER
UNDERDRAINS INTO THE RISER.
TT/R. MUINSZ
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JOB NO.
182154
SCALE
AS SHOWN
SHEET NO.
7
BIORETENTION BASIN CONSTRUCTION NOTES:
FACILITY PLANTING SPECIFICATIONS:
1. ROOTSTOCK OF THE PLANT MATERIAL SHALL BE KEPT MOIST DURING TRANSPORT FROM THE SOURCE TO THE JOB SITE AND UNTIL PLANTED.
2. WALLS OF PLANTING PIT SHALL BE DUG SO THAT THEY ARE VERTICAL.
3. THE DIAMETER OF THE PLANTING PIT MUST BEAM INIMUM OF SIX INCHES (6") LARGER THAN THE DIAMETER OF THE BALL OF THE TREE.
4. THE PLANTING PIT SHALL BE DEEP ENOUGH TO ALLOW 1/8 OF THE OVERALL DIMENSION OF THE ROOT BALL TO BE ABOVE GRADE. LOOSE SOIL AT THE BOTTOM OF THE PIT SHALL BE TAMPED BY
HAND.
5. THE APPROPRIATE AMOUNT OF FERTILIZER IS TO BE PLACED AT THE BOTTOM OF THE PIT (SEE BELOW FOR FERTILIZATION RATES).
6. THE PLANT SHALL BE REMOVED FROM THE CONTAINER AND PLACED IN THE PLANTING PIT BY LIFTING AND CARRYING THE PLANT BY ITS BALL (NEVER LIFT BY BRANCHES OR TRUNK).
7. 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.
8. BACKFILL PLANTING PIT WITH EXISTING SOIL.
9. MAKE SURE PLANT REMAINS STRAIGHT DURING BACKFILLING PROCEDURE.
10. NEVER COVER THE TOP OF THE BALL WITH SOIL. MOUNT SOIL AROUND THE EXPOSED BALL.
11. TREES SHALL BE BRACED BY USING 2' BY 2' WHITE OAK STAKES, STAKES SHALL BE PLACED PARALLEL TO 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.
12. BECAUSE OF THE HIGH LEVELS OF NUTRIENTS IN STORMWATER RUNOFF TO BE TREATED, BIORETENTION BASIN PLANTS SHOULD NOT REQUIRE CHEMICAL FERTILIZATION.
CONTRACTOR i
REQUIREMENTS- SEEPLANT scREDULEFOR SPECIFICPLANT SPEciES
Q
1. THE CONTRACTOR SHALL BE RESPONSIBLE FOR LAYOUT OF ALL WORK COVERED UNDER THESE PLANS.
2. LANDSCAPE CONTRACTOR SHALL REFER TO THE STANDARDIZED LANDSCAPE SPECIFICATIONS FOR THE STATE OF VIRGINIA FOR ADDITIONAL INFORMATION. THE CONTRACTOR SHALL ABIDE BY ITS
CONTENTS; HOWEVER ANY NOTES OR SPECIFICATIONS ON THE PLANS SHALL SUPERSEDE THOSE OUTLINED IN THE SPECIFICATIONS MANUAL (COPIES ARE AVAILABLE FOR A FEE FROM THE VIRGINIA
CHAPTER OF THE AMERICAN SOCIETY OF LANDSCAPE ARCHITECTS, VIRGINIA NURSERYMEN'S ASSOCIATION, INC. AND THE VIRGINIA SOCIETY OF LANDSCAPE DESIGNERS).
3. ALL PLANT MATERIAL SHALL MEET THE MINIMUM SPECIFICATIONS AND STANDARDS DESCRIBED IN THE CURRENT ISSUE OF THE AMERICAN STANDARD FOR NURSERY STOCK PUBLISHEDBYTHE
AMERICAN ASSOCIATION OF NURSERYMEN, 1250 STREET, NW, 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 (CALL MISS UTILITY 1-800-552-7001 BEFORE ANY EXCAVATION).
6. REFER TO THE APPROVED ROAD PLANS FOR ANY DETAILED SITE INFORMATION.
7. ALL WORK SHALL BE COORDINATED WITH OTHER PARTIES.
8. PLANTS WILL BE PREPARED FOR SHIPMENT IN A MANNER THAT WILL NOT CAUSE DAMAGE TO THE BARK, BUDS, BRANCHES, STEMS, OR OVERALL SHAPE OF THE STOCK. CONTAINER GROWN PLANTS
WILL BE TRANSPORTED IN THE CONTAINERS IN WHICH THEY HAVE BEEN GROWN.
9. ALL PLANT MATERIAL, UNLESS OTHERWISE SPECIFIED, SHALL BE UNIFORMLY BRANCHED AND HAVE A VIGOROUS ROOT SYSTEM. PLANT MATERIAL SHALL BE HEALTHY, VIGOROUS, AND FREE FROM
DEFECTS, DECAY,DISEASES, INSECT PEST EGGS, AND ALL FORMS OF INFESTATION. ALL PLANT MATERIAL SHALL BE FRESH, FREE FROM TRANSPLANT SHOCK OR VISIBLE WILT. PLANTS DEEMED
UNHEALTHY WILL BE REJECTED.
10. ALL CONTAINER STOCK SHALL HAVE BEEN PROPAGATED IN A CONTAINER LONG ENOUGH FOR THE ROOT SYSTEM TO HAVE DEVELOPED SUFFICIENTLY TO HOLD ITS SOIL. CONTAINER 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 THE WIND
ANDSUN. PLANTS STORED ON SITE SHALL BE PROTECTED FROM ANY DRYING AT ALL TIMES BY COVERING THE BALLS OR ROOTS WITH MOIST SAWDUST WET BURLAP WOOD CHIPS SHREDDED
BARK, PEAT MOSS, OR OTHER SIMILAR MULCHING MATERIAL.
12. THE OWNER RESERVES THE RIGHT TO SUBSTITUTE PLANT MATERIAL TYPE, SIZE Al QUANTITY. ANY SUBSTITUTIONS MUST BE APPROVED BY THE DESIGNER & COUNTY ENGINEER PRIOR TO
INSTALLATION.
13. MINOR FIELD ADJUSTMENTS MAYBE NECESSARY DUE TO SITE CONDITIONS (EX: FOOTBALL AND UTILITY CONFLICT). MAJOR ADJUSTMENTS MUST BE APPROVED BY THE DESIGNER AND COUNTY
ENGINEER PRIOR TO INSTALLATION.
14. NO PLANTING SHALL OCCUR WHEN THE SOIL IS FROZEN.
15. PLANT MATERIAL SHALL BE PLACED IN EXISTING SOIL WITH EACH PLANTING PIT EXCAVATED TO A SIZE SUFFICIENT TO CONTAIN THE ENTIRE ROOT BALL OR ROOT MASS, WITHOUT CRAMPING 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.
17. THE CONTRACTOR IS RESPONSIBLE FOR REMOVAL AND DISPOSAL OF TRASH AND DEBRIS WITHIN THE LIMITS OF THE PLANTING ON A DAILY BASIS.
18. THE CONTRACTOR WILL NOT BE RESPONSIBLE FOR PLANT MATERIAL THAT HAS BEEN DAMAGED BY VANDALISM, FIRE, OR OTHER ACTIVITIES BEYOND THE CONTRACTOR'S CONTROL.
19. THE CONTRACTOR SHALL CONTACT THE WATER RESOURCES INSPECTOR AND COLLINS ENGINEERING 24 HOURS PRIOR TO BACKFILLING THE BIOFILTERS AND REQUEST AN INSPECTION AND
APPROVAL OF THE UNDERDRAINS INSTALLATION AND THE SOIL MIX.
20. THE BIOHLTER PLANTING AREAS SHALL BE COVERED WITH SHREDDED HARDWOOD MULCH TO A DEPTH OF 3" IMMEDIATELY AFTER PLANTING.
FACILITY CONSTRUCTION
i. BIORETENTION AREAS SHALL BE FULLY PROTECTED BY SILT FENCE OR CONSTRUCTION FENCING, PARTICULARLY IF THEY WILL RELY ON INFILTRATION. IDEALLY, BIORETENTION SHALL
REMAIN OUTSIDE THE LIMIT OF DISTURBANCE DURING CONSTRUCTION TO PREVENT SOIL COMPACTION BY HEAVY EQUIPMENT. BIORETENTION BASIN LOCATIONS MAYBE USED AS SMALL
SEDIMENT TRAPS OR BASINS DURING CONSTRUCTION THOUGH. IFTHEFACILITY 15 USED ASA SEDIMENT TRAP OR BASIN, THE BIORETENTION BA5IN MUST CONTAIN AN UNDERDRAIN. THE
FACILITY MUST ALSO BE CLEANED FREE OF DEBRIS, STABILIZED AND ANY STRUCTURES PROPOSED TO REMAIN, REMOVED OR CONVERTED SHALL BE CLEANED AND INSPECTED TO ENSURE
ITS INTEGRITY IS MAINTAINED.
2. CONSTRUCTION OF THE BIORETENTION AREA MAY ONLY BEGIN AFTER THE ENTIRE CONTRIBUTING DRAINAGE AREA HAS BEEN STABILIZED WITH VEGETATION. IT MAY BE NECESSARY TO
BLOCK CERTAIN CURB OR OTHER INLETS WHILE THE BIORETENTION AREA IS BEING CONSTRUCTED. THE PROPOSED SITE SHALL BE CHECKED FOR EXISTING UTILITIES PRIOR TO ANY
EXCAVATION.
3. THE DESIGNER ANDTHE INSTALLER SHALL HAVE A PRE -CONSTRUCTION MEETING, CHECKING THE BOUNDARIES OFTHE CONTRIBUTING DRAINAGE AREA AND THE ACTUAL INLET
ELEVATIONS TO ENSURE THEY CONFORM TO THE ORIGINAL DESIGN. BECAUSE THE TIMING OF THE INSTALLATION IS DICTATED BY THE CONTRACTOR, THE CONTRACTOR SHALL BE
RESPONSIBLE FOR CONTACTING THE ENGINEER. SINCE OTHER CONTRACTORS MAY BE RESPONSIBLE FOR CONSTRUCTING PORTIONS OFTHE SITE, IT IS QUITE COMMON TO FIND SUBTLE
DIFFERENCES IN SITE GRADING, DRAINAGE AND PAVING ELEVATIONS THAT CAN PRODUCE HYDRAULICALLY IMPORTANT DIFFERENCES FOR THE PROPOSED BIORETENTION. THE GENERAL
CONTRACTOR SHALL CLEARLY COMMUNICATE, IN WRITING, ANY PROJECT CHANGES DETERMINED DURING THE PRE -CONSTRUCTION MEETING TO THE INSTALLER AND THE PLAN
REVIEW/INSPECTION AUTHORITY.
4. TEMPORARY E&S CONTROLS ARE NEEDED DURING CONSTRUCTION OFTHE BIORETENTION AREATO DIVERT STORMWATER AWAY FROM THE BIORETENTION AREA UNTIL IT ISCOMPLETED.
SPECIAL PROTECTION MEASURES SUCH AS EROSION CONTROL FABRICS MAY BE NEEDED TO PROTECT VULNERABLE SIDE SLOPES FROM EROSION DURING THE CONSTRUCTION PROCESS.
S. ANY PRE-TREATMENT CELLS SHALL BE EXCAVATED FIRSTAND THEN SEALED TO TRAP SEDIMENTS.
6. EXCAVATORS OR BACKHOES SHALL WORK FROM THE SIDES TO EXCAVATE THE BIORETENTION AREATO ITS APPROPRIATE DESIGN DEPTH AND DIMENSIONS. EXCAVATING EQUIPMENT
SHALL HAVE SCOOPS WITH ADEQUATE REACH SO THEY DO NOT HAVE TO SIT INSIDE THE FOOTPRINT OFTHE BIORETENTION AREA. CONTRACTORS SHALL USE A CELL CONSTRUCTION
APPROACH IN LARGER BIORETENTION BASINS, WHEREBY THE BASIN IS SPLIT INTO Soo TO 1,000 50. FT. TEMPORARY CELLS WITH A 10-15 FOOT EARTH BRIDGE IN BETWEEN, 50 THAT CELLS
CAN BE EXCAVATED FROM THE SIDE.
7. IT MAY BE NECESSARY TO RIP THE BOTTOM SOILS TO A DEPTH OF 6 TO 12 INCHES TO PROMOTE GREATER INFILTRATION. THIS REQUIREMENT WILL BE DICTATED BY THE INSPECTOR, PRIOR
TO INSTALLATION OF THE REMAINDER OFTHE FACILITY.
8. PLACE GEOTEXTILE FABRIC ON THE SIDES OFTHE BIORETENTION AREA WITH A 6-INCH OVERLAP ON THE SIDES. IFA STONE STORAGE LAYER WILL BE USED, PLACETHE APPROPRIATE DEPTH
OF #57 STONE ON THE BOTTOM, INSTALL THE PERFORATED UNDERDRAIN PIPE, PACK #57 STONE TO 31NCHES ABOVE THE UNDERDRAIN PIPE, AND ADD APPROXIMATELY 3INCHES OF
CHOKER STONE/PEA GRAVEL AS A FILTER BETWEEN THE UNDERDRAIN AND THE SOIL MEDIA LAYER. IF NO STONE STORAGE LAYER IS USED, START W ITH 61NCHES OF #57 STONE ON THE
BOTTOM AND PROCEED WITH THE LAYERING AS DESCRIBED ABOVE.
9 DELIVER THE SOIL MEDIA FROM AN APPROVED VENDOR AND STORE IT ON AN ADJACENT IMPERVIOUS AREA OR PLASTIC SHEETING. APPLYTHE MEDIA IN.2-INCH LIFTS UNTILTHE DESIRED
TOP ELEVATION OFTHE BIORETENTION AREA IS ACHIEVED. WAIT A FEW DAYS TO CHECK FOR SETTLEMENT AND ADD ADDITIONAL MEDIA AS NEEDED TO ACHIEVE THE DESIGN ELEVATION.
2o. PREPARE PLANTING HOLES FOR ANY TREES AND SHRUBS, INSTALL THE VEGETATION, AND WATER ACCORDINGLY. INSTALL ANY TEMPORARY IRRIGATION AS NEEDED.
11. PLACE THE SURFACE COVER IN BOTH CELLS (MULCH, RIVER STONE OR TURF), DEPENDING ON THE DESIGN. IF COIR OR JUTE MATTING WILL BE USED IN LIEU OF MULCH, THE MATTING WILL
NEED TO BE INSTALLED PRIOR TO PLANTING (STEP 9), AND HOLES OR SLITS WILL HAVE TO BE CUT IN THE MATTING TO INSTALL THE PLANTS.
a2. INSTALL THE PLANT MATERIALS AS SHOWN IN THE LANDSCAPING PLAN, AND WATER THEM DURING WEEKS OF NO RAIN FOR THE FIRST TWO MONTHS.
13. CONDUCTTHE FINAL CONSTRUCTION INSPECTION. THEN LOG THE GPS COORDINATES FOR EACH BIORETENTION FACILITY AND SUBMITTHEM FOR ENTRY INTO THE LOCAL MAINTENANCE
TRACKING DATABASE.
FACILITY MAINTENANCE:
THE FOLLOWING TASKS SHALL BE PERFORMED BY THE CONTRACTOR IN THE FIRST YEAR FOLLOWING INSTALLATION:
1. FOR THE FIRST 6 MONTHS FOLLOWING CONSTRUCTION THE SITE SHALL BE INSPECTED BY THE CONTRACTOR AT LEASTTWICE AND AFTER STORM EVENTS THAT EXCEED 2121NCH OF
RAINFALL.
2. THE CONTRACTOR SHALL LOOK FOR BARE OR ERODING AREAS IN THE CONTRIBUTING DRAINAGE AREA OR AROUND THE BIORETENTION AREA, AND MAKE SURE THEYARE IMMEDIATELY
STABILIZED WITH GRASS COVER. CONTRACTOR SHALL SPOT RESEED AS NECESSARY.
3. ONE-TIME, SPOT FERTILIZATION MAY BE NEEDED FOR INITIAL PLANTINGS.
4. WATERING IS NEEDED ONCE A WEEK DURING THE FIRST 2 MONTHS, AND THEN AS NEEDED DURING THE FIR5TGROWING SEASON(APRIL-OCTOBER), DEPENDING ON RAINFALL.
5. REMOVE AND REPLACE DEAD PLANTS. SINCE UP TO 1o% OF THE PLANT STOCK MAY DIE OFF IN THE FIRSTYEAR, THE CONTRACTOR SHALL BE RESPONSIBLE FOR THE CARE AND
REPLACEMENT WARRANTY TO ENSURE THAT VEGETATION IS PROPERLY ESTABLISHED AND SURVIVES DURING THE FIRST GRO W ING SEASON FOLLOWING CONSTRUCTION. THE TYPICAL
THRESHOLDS BELOW W HICH REPLACEMENT IS REQUIRED ARE go%SURVIVAL OF PLANT MATERIAL AND 100% SURVIVALOF TREES.
6. ASPIRING MAINTENANCE INSPECTION AND CLEANUP SHALL BE CONDUCTED AT EACH BIORETENTION AREA. THE FOLLOWING IS A LIST OF SOME OFTHE KEY MAINTENANCE PROBLEMSTO
LOOK FOR:
A. CHECK TO SEE IF 75%TO go% COVER (MULCH PLUS VEGETATIVE COVER) HAS BEEN ACHIEVED IN THE BED, AND MEASURE THE DEPTH OF THE REMAINING MULCH.
B. CHECK FOR SEDIMENT BUILDUP AT CURB CUTS, GRAVEL DIAPHRAGMS OR PAVEMENT EDGES THAT PREVENT FLOW FROM GETTING INTO THE BED, AND CHECK FOR OTHER SIGNS OF
BYPASSING.
C. CHECK FOR ANY WINTER- OR SALT -KILLED VEGETATION, AND REPLACE IT WITH HARDIER SPECIES.
D. NOTE PRESENCE OF ACCUMULATED SAND,SEDIMENT, DEBRIS AND TRASH IN THE PRE-TREATMENT CELL OR FILTER BEDS, AND REMOVE IT.
E. INSPECT BIORETENTION SIDE SLOPES AND GRASS FILTER STRIPS FOR EVIDENCE OF ANY RILL OR GULLY EROSION, AND REPAIR IT.
F. CHECK THE BIORETENTION BED FOR EVIDENCE OF MULCH FLOATATION, EXCESSIVE PONDING, DEAD PLANTS OR CONCENTRATED FLOWS, AND TAKE APPROPRIATE REMEDIAL ACTION.
G. CHECK INFLOW POINTS FOR CLOGGING, AND REMOVE ANY SEDIMENT.
H. LOOK FOR ANY BARE SOIL OR SEDIMENT SOURCES IN THE CONTRIBUTING DRAINAGE AREA, AND STABILIZE THEM IMMEDIATELY.
I. CHECK FOR CLOGGED OR SLOW -DRAINING SOIL MEDIA, A CRUST FORMED ON THE TOP LAYER, INAPPROPRIATE SOIL MEDIA, OR OTHER CAUSES OF INSUFFICIENT FILTERING TIME, AND
RESTORE PROPER FILTRATION CHARACTERISTICS.
1. FOR A LIST OF THE OWNER'S ANNUAL LONG-TERM MAINTENANCE ACTIVITIES AFTER THE CONTRACTOR'S RESPONSIBILITIES HAVE BEEN COMPLETED. PLEASE SEE BELOW.
Annual Maintenance Activities for Bioretention
Maintenance Tasks
Frequency
•
Mowing of grass filter strips and bioretention turf cover
At least 4 times a year
•
Spot weeding, erosion repair, trash removal, and mulch raking
Twice during growing season
•
Add reinforcement planting to maintain desired the vegetation
density
As needed
•
Remove invasive plants using recommended control methods
•
Stabilize the contributing drainage area to prevent erosion
•
Spring inspection and cleanup
•
Supplement mulch to maintain a 3 inch layer
Annually
•
Prune trees and shrubs
Remove sediment in re -treatment cells and inflow points
m p
Once eve 2 to 3 ears
ry y
Is
Replacemulch layer
the
Every3 ears
FACILITY INSPECTION:
CONSTRUCTION INSPECTIONS ARE CRITICAL TO ENSURE THE BIORETENTION BASINS ARE PROPERLY CONSTRUCTED AND ESTABLISHED. BECAUSE THE TIMING OF THE INSTALLATION IS
DICTATED BY THE CONTRACTOR, THE CONTRACTOR SHALL BE RESPONSIBLE FOR CONTACTING THE ENGINEER AND INSPECTOR PRIOR TO INSTALLATION. MULTIPLE SITE VISITS AND
INSPECTIONS ARE REQUIRED TO BE SCHEDULED BY THE CONTRACTOR, WITH THE ENGINEER AND INSPECTOR, DURING THE FOLLOWING STAGES OF THE BIOFILTER CONSTRUCTION PROCESS:
1. PRE -CONSTRUCTION MEETING
2. INITIAL SITE PREPARATION INCLUDING INSTALLATION OF PROJECT E&S CONTROLS
3
EXCAVATION GRADING E.G. INTERIM FINAL ELEVATIONS
4
BIOFILTER INSTALLATION(E.G., MICROTOPOGRAPHY SOIL AMENDMENTS STONE BEDDING UNDERDRAINS AND STAKING OF PLANTING ZONES
5. PLANTING PHASE (WITH AN EXPERIENCED LANDSCAPE ARCHITECT PRESENT)
6. FINAL INSPECTION (DEVELOP A PUNCH LIST FOR FACILITY ACCEPTANCE)
PLEASE ALSO SEE ABOVE, UNDER FACILITY MAINTENANCE #6, FOR REQUIRED INSPECTIONS
StornnRaxTM
ROUND SERIES TRASH RACK
CONCRETE MANHOLE
STANDARD BO INCH RACK SHOWN
DIMENSIONS IN INCHES
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KWIC SOLUTIONS, MC
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Pan No.
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Dim B
Din C
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Plastic Solutions, Inc.
4 PO Box 43M, WIDTMsur, VA 22604
M McGhee ad. WILxJtester, VA 22603
:9771877-972711
(S4017ZZ•2219 Am
hnR//www.Plastk-soWtbn.�n
CUSTOMER
WT:Ja"f1
Landscanina General Notes
ISOMETRIC
CONCRETE STRUCTURE DIMENSIONS
INSIDE STRUCTURE DIMENSION
OUTSIDE STRUCTURE DIMENSION
AVAILABLE OPTIONS
CROSS BRACING FOR OVERHANG
HDPE ANTI -VORTEX PLATE REQUIRED
DATE
DRAWN BY:
APP9 BY:
DETAIL:
Landscape Specifications:
The following specifications are the minimum standards that are acceptable for the installation of the plant material:
I. The contractor shall be responsible for adhering to the construction sequence outlined on this page for the installation of the bioretention basin
landscaping. The Contractor shall also be responsible for locating all existing underground utilities prior to beginning construction. An planting
P g g g P g g YP g
conflict arising from existing utility locations shall be brought to the attention of the Owner.
2. The Contractor shall be responsible for providing positive drainage at 2% minimum in all planted areas at the base of the plant.
3. The Contractor shall verify plant count from the plan, and shall provide and install all plant materials shown on the approved plan. The plant
schedule provided is for the Contractor's reference only; quantities shall be verified from the approved plan.
4. The Contractor shall guarantee all plant materials for 1 year from the date of planting.
Su P Y P g
5. The Owner or his designated agent shall approve any changes in plant material with prior approval from County Engineering.
6. All plant material shall be balled and burlapped or container grown and shall be well formed, vigorous, growing specimens with growth typical of
the variety P J specified and free from injurious insects and diseases.
7. All trees and shrubs shall be installed as indicated on the approved landscape plan.
Guidelines for Tree Preservation
Preservation measures shall be administered to trees within wooded areas to be maintained within the conservation/preservation areas delineated, with
particular preservation effort directed toward trees with trunk diameters greater than 18 inches at breast height. All wooded preservation areas adjacent
to existing residential development shall be fenced off from construction activity with portable chain link fencing no closer than the dripline of any tree
growing inside the preservation areas. All other wooded areas to remain shall be fenced off from construction activity with 40 inch high "international
orange" plastic web fencing no closer than the dripline of any tree growing within the designated conservation/preservation area. During the course of
final grading, if it becomes necessary to fill within the canopy limits of existing trees, such fills shall not exceed depths greater than six (6) inches to
ensure continued saturation of the existing root mat. Prior to grading around the trees, all vegetation shall be stripped from the fill areas and fertilizer
shall be applied. Should it become necessary to cut within the canopy limits all disturbed roots shall be protected from exposure to the air. The crown
PP m'Y PY P P
leaf surface shall be proportionately reduced to balance the reduced root system. The trees shall be fertilized upon completion of grading activities in
the area. Any damaged portions of trees within wooded areas to be maintained shall be immediately addressed to promote expedient recovery.
Further measures for tree protection shall be adhered, as outlined in Chapter 3.38 "Tree Preservation &Protection" of the Virginia Erosion and
Sediment Control Handbook.
BIORETENTION BASIN LANDSCAPING DETAIL:
SCALE 1 "=30'
O
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FACILITY SIDE SLOPES SHALL
BE MULCHED WITH SWAMP
MILKWEED PLANTINGS, I SC, OS \
TYPICAL. (1,200 Sf) \
\ GRASS LINED
i TOP OF DAM, /
/ TYP. I
V I
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BIORETENTION BASIN LANDSCAPING SCHEDULE
SYM
BOTANICAL
COMMON NAME
SZE I
SWIM FACILITY
QUANTITY
ICOVERAGE(sf)
PERENNIALS/HERBACEOUS
SC
SCIRPUSCYPERINUS
WOOLGRASS
80
Al
ASCLEPIAS I NCARNATA
SWAMP MILKWEED
1,200
PV
PANICUM VIRGATUM
SWITCHGRASS
60
MC
MYRICA CERIFERA
WAX MYRTLE
2-1/2" CAL.
1 3
JIG
ILEXGLABRA
INKBERRY
2-1/2"CAL.
1 5
TREES
BN
BETULA NIGRA
RIVER BIRCH
2" CAL.
1
AR
ACER RUBRUM
RED MAPLE
2-1/2" CAL.
1
LS
LI UIDAMBAR STYRACIFLUA
Q
SWEETGUM
1-1 / 2" CAL.
2
NOTES:
1, SET TREE PLUMB PRIOR TO STAKING.
2. ALL PRUNING IS RESTRICTED TO THE REMOVAL OF DEAD
AND BROKEN BRANCHES AND SHALL BE PERFORMED UNDER
BACKFILL TO TERMINATE
THE SUPERVISION OF THE LANDSCAPE ARCHITECT.
AT TOP OUTSIDE LIMITS OF
FOOTBALL
REFER TO TREE
3. DO NOT ALLOW AIR POCKETS TO FORM WHILE BACKFILLING.
ADD MULCH OVERTOP OF
STAKING DETAIL
4. IMMEDIATELY SOAK PLANT WITH WATER.
ROOTBALL AND PLANTING PIT
LIMITS, BEGINNING AT NO MORE
5. SEE IRRIGATION PLANS/DETAILS/SPECIFICATIONS AS THEY
RELATE TO THIS INSTALLATION.
THAN 1" DEPTH AT TRUNK AND
TAPERING UP TO A DEPTH OF
3" AT PLANTING PIT LIMITS,
THEN TAPER TO PROPOSED
FINISHED GRADE II
1' VARI S
TVP
TREE GUYING DETAIL CONSISTS
OF 2 GUYS,SET 120' AROUND
PLANT PIT ON "UPHILL" SIDE
SPECIMEN SHRUB
; . ;. ...
(AS SPECIFIED ON
i TRENCH EDGE AROUND
BE
�/
FOOTBALL
ROOTBALL
REFERTO
REFER TO TREE
REFER
REFER TO TREE
��\ MULCHED
STAKING DETAIL
STAKING DETAIL
i/
S
COMPACT EXCAVATED SOIL
�� f%
/
CUT AWAY ALL WIRE BASKETS BACKORIGINALFILLWITHCULTIVATED,
PLANT
/ j\/\
TO FORM FOOTBALL PIT
AND/OR NON -BIODEGRADABLE \ \�/
PIT EXCAVATION IF LOOSE. IF
TRENCH EDGE AROUND
ENTIRE AREA TO BE
ON DOWNHILL SIDE OF TREE
3 J
4"
MIN.
FOOTBALL WRAPPING AFTER �i� ��
FINAL TREE PLACEMENT
EXCAVATED MATERIAL NOT
LOOSE, SUBSTITUTE WITH
MULCHED
BURLAP FOOTBALL WRAPPING
ACCEPTABLE TOPSOIL
P
REFER TO FOOTBALL IT
TRENCH EDGE AROUND
ENTIRE AREA TO BE
/ :.. MULCHED
'ICI=LII- .:.:.�.•�+1"' � )IIII=IIII
- - _ -
- - -
=I�=1� II 1==II
I {
TO BE UNTIED FROM TRUNK
AND CUT AWAY TO A POINT
AT LEAST 1/2 DISTANCE DOWN
MATERIAL. AMEND BACKFILL
PER SPECIFICATIONS. COMPACT
BACKFILL IN LIFTS BY FOOT.
DETAIL
/ / �
\
- - _ROOTBALL.
- - -WATER
IIIII� � -
'- P- :::::�3'::;i:.: I I-
THROU HLV AT 1/2
G
DE PTH
/ {i
REFER TO FOOTBALL PIT
\ DETAIL
FOOTBALL III Ilff. T
- -
- - -/ -
I I
T� �-
SCARIFY BASE OF PLANT PIT
WHEN EXCAVATING PIT: BREAK
.
' O 'C..
:: \
°:�`� \
Oj\:�'L.�:
THROUGH AND LOOSEN ALL
RETURN AND COMPACT LOOSE
EXCAVATED MATERIAL TO
.,, FOOTBALL
Q� .;.. .„.. .. ..,.,',.,�y:C+:�\/�
��;'�'FOOTBALL �
9O :.: .:•.y; •?.';",.1 �•..`/.
YI=IIII= = = = = = =III=LIP
L - _ - L
HARDPAN )REMOVE AS
NECESSARY TO FACILITATE
PLANT PIT TO ESTABLISHED
PROPER DEPTH PRIOR TO
:. .'?�:
.•:.'..::.,:/
DRAINAGE)
PLANT PLACEMENT
\/\/\/\/\/\/\/\ \\\//\\\/
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IIII=1� IIII-
II IIII
NOTES:
1. NOTIFY LANDSCAPE ARCHITECT OF ANY SITUATION WHERE
SOIL CHARACTERISTICS ARE NOT
NOTES:
REFER TO ROOTBALL PIT
AGREEABLE TO THESE PLANTING CRITERIA OR WHERE CONDITIONS RAISE CONCERNS IN
NOTES:-
1. SET TREE PLUMB PRIOR TO STAKING.
1. SET TREE PLUMB PRIOR TO STAKING
DETAIL
TERMS OF PLANT SURVIVABILITY OR WARRANTY.
2. CONTRACTOR TO NOTIFY LANDSCAPE ARCHITECT OF ANY
PLANT DAMAGE EXPOSED BY,
ALL PRUNING IS RESTRICTED TO THE REMOVAL OF DEAD AND BROKEN BRANCHES AND
2. ALL PRUNING IS RESTRICTED TO THE REMOVAL OF DEAD AND BROKEN BRANCHES AND
OR INCURRED DURING, PLANTING PROCESS.
2.SHALL BE PERFORMED UNDER THE SUPERVISION OF THE LANDSCAPE ARCHITECT.
SHALL BE PERFORMED UNDER THE SUPERVISION OF THE LANDSCAPE ARCHITECT
(::T:) TREE PLANTING
2 TREE PLANTING ON SLOPE
SHRUB PLANTING _
/"�4 ROOTBALL PIT
12 SECTION
N.T.S.
12 SECTION N.T.S.
12 SECTION N.T.S�
ip SECTION
TT/R. Cl�-LI
No. 35791
10/2/20
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PROPOSED MANMADE CONCRETE DAM REMOVAL:
SCALE 1 "=50'
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EXISTING CONCRETE DAM PROPOSED TO BE REMOVED. GIVEN IT9���
CLOSE PRO ITY TO THE PROPERTY LIMITS, THE CONTRACitlR SHALL
ST KE,§LTHE C6NEXISFIRM TAM PRIOR ETO CONSTRUCTION. PROPSCONSTRUCTIONYLI LIMITS
\ \ \ — - —
-WCTIXITY ASSOCIATED WITH THE DAM REMOVAL SHAZ�E/L'IMITED TO1 \ \ LIMITS OF,TYP.POWELLS,—
/ THE ON5ITE TAX MA%PARCELS 56-115'& 55C-03-A. ' \ \ \ CREEK, TYP.\ \ Is,
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PROPOSED IMPACTS TO STREAM BUFFER:
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MITIGATION PLAN VICINITY MAP:
SCALEI"=100' /')�'� / \ v .f' ' /,'/ �/ l l/ / /AAA_ .� r'��/ ij/�/i// •� i /1 —�—'-_ v/� \ I / --/ ` \ % \\ V�V A
L------V� A \ A
/ / / \ / i/ I \ J ' / / r — —__ — — — — �� \ PROPO ED TRIPLE BOX CULVERT (NOT PART �\ /
/ / —
/ \OFTHI PLAN) AT WITH E PROPOSEDECONNECTOR ROALL CREEK D
FUTURE PLEASANT
I
GREEN PHASE II (NOT
.PART OF THIS. PLAN
Al
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STREAM BUFFER MITIGATION NOTES:
Q
/ /// / \� THE EXISTING STREAM BUFFER ON -SITE IS HEAVILY WOODED SO TRADITIONAL
/ / \ / / / / / / " / / / / / ` / r / j // MITIGATION PLANTING CAN NOT BE ACCOMPLISHED. THIS PLAN PROPOSES THE
FOLLOWING MEASURES TO MITIGATE IMPACTS TO THE EXISTING STREAM
�WSTfiEANYBUFFER / l /'/ V � / / / v BUFFER AND FILLING IN THE FLOODPLAIN:
/ / // pj/ 1. THE CONTRACTOR SHALL REMOVE THE EXISTING CONCRETE DAM IN
POWELLS CREEK, AS SHOWN AND NOTED ON THIS SHEET. THIS PLAN
PROPOSES TO REMOVE THE CONCRETE DAM THAT IMPOUNDS WATER IN
POWELLS CREEK (NORTH OF THE PROPOSED TRIPLE BOX CULVERT
CROSSING). WITH THE REMOVAL OF THIS DAM, THE NATIVE STREAM
FLOW PATTERNS WILL BE RESTORED. THIS WILL HELP RESTORE THE
RIPARIAN HABITAT THAT HAS BEEN ALTERED DUE TO THE DAM
CONSTRUCTION AND ALLOW AQUATIC LIFE TO TRAVEL UP AND DOWN THE
0\ STREAM BED, RESTORING THE NATURAL PROCESSES CURRENTLY
IMPACTED BY THE DAM.
2. THE CONTRACTOR SHALL ALSO PROVIDE STREAM BANK STABILIZATION
PLANTING SCHEME FOR EVERY 400sf (OR On' On' SECTION) SHALL CONTAIN THE FOLLOWING: WITH ARMORING TO PROTECT THOSE AREAS ALONG POWELLS CREEK
WITHIN THE PROPERTY WHERE EXTREME EROSION IS PRESENT, NOT TO
//// / // i / i THE WATERSIDE 50% OF THE BUFFER:
/ EXCEED 100 LINEAR FEET OF STREAM RESTORATION.
ONE (1) 11" - 2" CALIPER CANOPY TREE OR LARGE EVERGREEN AT 6'
/ 1/ / , — \\ / / ✓ — 3. IN CONJUNCTION WITH ITEMS #1 AND #2 ABOVE, THE STREAM BUFFER
/ EXi TING CONCRET# DAhy \ i / fo / ` / // O TWO TWO
"- 11" CALIPER SHRUBS
UNDERSTORY TREES OR EVERGREENS AT 4' OR ONE (1) UNDERSTORY TREE AND SHALL BE RESTORED IN AREAS ALONG POWELLS CREEK WHERE TREE
�PROP�EDTO BF; REM0VE9 TWO (2) LARGE SHRUBS AT 3'-4'
THREE (3) SMALL SHRUBS OR WOODY GROUNDCOVER AT 15"-18" COVER IS MORE SPARSE. MITIGATION PLANTINGS SHALL NOT BE
THE LANDWARD 50% OF THE BUFFER: REQUIRED TO EXCEED A TOTAL PLANTING AREA OF 44,175sf (EQUAL TO Ix
BARE ROOT SEEDLINGS OR WHIPS AT 1,2010 STEMS/ACRE, APPROXIMATELY 6' O.C. THE PROPOSED IMPACTS) WHEN MITIGATION ITEMS #1 AND #2 ABOVE
(600 MINIMUM PLANT SURVIVAL REQUIRED AFTER TWO GROWING SEASONS) OR ARE COMPLETED.
EXiTING42 WID x 8jUG-F DOUBLE/ \ \ \ — — — \ _ 9 / SINGp �E CONTAINER GROWN SEEDLING TUBES AT 700 PER ACRE, APPROXIMATELY 5' O.C. 4. ITEMS #1, 2 AND 3 ABOVE WILL RESULT IN PLANTINGS THROUGHOUT THE
JOXCULVERTA POWELLgREEK — —Q'' \ \ `' EORZ (490 MINIMUM PLANT SURVIVAL REQUIRED AFTER TWO GROWING SEASONS) POWELLS CREEK STREAM BUFFER AND WILL MITIGATE THE IMPACTS FROM
/yROSSING WITH E ISTING CJLING LAME I KE
PLANING NOTES: THE CONNECTOR ROAD CONSTRUCTION. STREAM BUFFER PLANTINGS
1. ALL MITIGATION PLANTINGS SHALL COMPLY WITH THE RIPARIAN BUFFERS GUIDANCE MANUAL BY CBLAD. DESCRIBED ABOVE IN #3, AND BELOW IN #5, SHALL BE IN ACCORDANCE
1l 2. ALL MITIGATION AREAS SHALL BE PROTECTED BY A MAINTENANCE AGREEMENT. WITH THE 400sf PLANTING SCHEME SHOWN ON THIS SHEET.
\ \ \ `3. DCR's RIPARIAN BUFFERS MODIFICATION & MITIGATION GUIDANCE MANUAL DEFINES A CANOPY TREE AS A TREE THAT
\ ( \ Q 4. IN ALTERNATIVES ITEMS PLANT
2 & 3 ABOVE WOULD BE TO REMOVE
/ \ REACHES 35'IN HEIGHT OR LARGER WHEN MATURE. THE MANUAL DEFINES AN UNDERSTORY TREE AS A TREE THAT
J� \ � / � INVASIVE SPECIES AND TO PLANT A TOTAL MITIGATION AREA OF 88,350sf
L / \ / MATURES TO A HEIGHT OF 12' TO 35'. A LARGE SHRUB IS DEFINED AS A SHRUB THAT REACHES 10' OF HEIGHT OR
I l I / / GREATER AT MATURITY, AND A SMALL SHRUB IS DEFINED AS A WOODY PLANT THAT CAN REACH UP TO 10' OF HEIGHT (EQUAL TO 2x THE PROPOSED IMPACTS). IN THE EVENT THIS OPTION IS
/ \ AT MATURITY. SELECTED, REQUIREMENTS #1-3 ABOVE CAN BE WAIVED.
TT/R. M-LLINSZ
No. 35791 a
10/2/20�i
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