HomeMy WebLinkAboutWPO201700023 Plan - VSMP Minor Amendment 2 2019-06-20ALBEMARLE COUNTY, VIRGINIA
W PO/VS M P: WP02017 00023
EROSION AND SEDIMENT CONTROL/STORMWATER MANAGEMENT PLANS
WPO AMENDMENT #2
ALBEMARLE COUNTY ENGINEERING GENERAL CONSTRUCTION NOTES FOR E&SC PLANS:
1. THE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO THE PRE -CONSTRUCTION CONFERENCE, ONE WEEK PRIOR TO THE COMMENCEMENT OF LAND DISTURBING ACTIVITY, AND ONE WEEK PRIOR TO THE FINAL INSPECTION.
2. ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CONSTRUCTED AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS VR 625-02-00 EROSION AND SEDIMENT CONTROL REGULATIONS.
3. ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR AS THE FIRST STEP IN CLEARING.
4. A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE MAINTAINED ON THE SITE AT ALL TIMES.
5. PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON THESE PLANS (INCLUDING, BUT NOT LIMITED TO, OFF -SITE BORROW OR WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION CONTROL PLAN TO THE OWNER FOR REVIEW AND APPROVAL BY THE PLAN APPROVING
AUTHORITY.
6. THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS DETERMINED BY THE PLAN APPROVING AUTHORITY.
7. ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL TIMES DURING LAND DISTURBING ACTIVITIES AND DURING SITE DEVELOPMENT UNTIL FINAL STABILIZATION IS ACHIEVED.
8. DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED FILTERING DEVICE.
9. THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY AND AFTER EACH RUNOFF -PRODUCING RAINFALL EVENT. ANY NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE EFFECTIVENESS OF THE EROSION CONTROL DEVICES SHALL BE MADE IMMEDIATELY.
10. ALL FILL MATERIAL TO BE TAKEN FROM AN APPROVED, DESIGNATED BORROW AREA. .
11. ALL WASTE MATERIALS SHALL BE TAKEN TO AN APPROVED WASTE AREA. EARTH FILL SHALL BE INERT MATERIALS ONLY, FREE OF ROOTS, STUMPS, WOOD, RUBBISH, AND OTHER DEBRIS.
12. BORROW OR WASTE AREAS ARE TO BE RECLAIMED WITHIN 7 DAYS OF COMPLETION PER ZONING ORDINANCE SECTION 5.1.28.
13. ALL INERT MATERIALS SHALL BE TRANSPORTED IN COMPLIANCE WITH SECTION 13-301 OF THE CODE OF ALBEMARLE.
14. BORROW, FILL OR WASTE ACTIVITY INVOLVING INDUSTRIAL -TYPE POWER EQUIPMENT SHALL BE LIMITED TO THE HOURS OF 7:00 AM TO 9:00 PM.
15. BORROW, FILL OR WASTE ACTIVITY SHALL BE CONDUCTED IN A SAFE MANNER THAN MAINTAINS LATERAL SUPPORT, OR ORDER TO MINIMIZE ANY HAZARD TO PERSONS, PHYSICAL DAMAGE TO ADJACENT LAND AND IMPROVEMENTS, AND DAMAGE TO ANY PUBLIC STREET BECAUSE 0 SLIDES, SINKING, OR COLLAPSE.
16. THE DEVELOPER SHALL RESERVE THE RIGHT TO INSTALL, MAINTAIN, REMOVE OR CONVERT TO PERMANENT STORMWATER MANAGEMENT FACILITIES WHERE APPLICABLE ALL EROSION CONTROL MEASURES REQUIRED BY THIS PLAN REGARDLESS OF THE SALE OF ANY LOT, UNIT, BUILDING OR OTHER PORTION OF THE PROPERTY.
17. TEMPORARY STABILIZATION SHALL BE TEMPORARY SEEDING AND MULCHING. SEEDING IS TO BE AT 75 LBS/ACRE, AND IN THE MONTHS OF SEPTEMBER TO FEBRUARY TO CONSIST A 50/50 MIX OF ANNUAL RYE GRASS AND CEREAL WINTER RYE, OR IN MARCH AND APRIL TO CONSIST OF ANNUAL RYE, OR MAY THROUGH AUGUST TO CONSIST
OF GERMAN MILLET. STRAW MULCH IS TO BE APPLIED AT 80LBS/100SF. ALTERNATIVES ARE SUBJECT TO APPROVED BY THE COUNTY EROSION CONTROL INSPECTOR.
18. PERMANENT STABILIZATION SHALL BE LIME AND FERTILIZER, PERMANENT SEEDING, AND MULCH. AGRICULTURAL GRADE LIMESTONE SHALL BE APPLIED AT 9OLBS/1000SF, INCORPORATED INTO THE TOP 4-6 INCHES OF SOIL. FERTILIZER SHALL BE APPLIED AT 1000LBS/ACRE AND CONSIST OF A 10-20-10 NUTRIENT MIX. PERMANENT
SEEDING SHALL BE APPLIED AT 18OLBS/ACRE AND CONSIST OF 95% KENTUCKY 31 OR TALL FESCUE AND 0-5% PERENNIAL RYE GRASS OR KENTUCKY BLUEGRASS. STRAW MULCH IS TO BE APPLIED AT 80LBS/100SF. ALTERNATIVES ARE SUBJECT TO APPROVED BY THE COUNTY EROSION CONTROL INSPECTOR.
19. MAINTENANCE: ALL MEASURES ARE TO BE INSPECTED WEEKLY AND AFTER EACH RAINFALL. ANY DAMAGE OR CLOGGING TO STRUCTURAL MEASURES IS TO BE REPAIR IMMEDIATELY. SILT TRAPS ARE TO BE CLEANED WHEN 50% OF THE WET STORAGE VOLUME IS FILLED WITH SEDIMENT. ALL SEEDED AREAS ARE TO BE RESEEDED WHEN
NECESSARY TO ACHIEVE A GOOD STAND OF GRASS. SILT FENCE AND DIVERSION DIKES WHICH ARE COLLECTING SEDIMENT TO HALF THEIR HEIGHT MUST BE CLEANED AND REPAIRED IMMEDIATELY.
20. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE REMOVED WITHIN 30 [43AYS OF FINAL SITE STABILIZATION, WHEN MEASURES ARE NO LONGER NEEDED, SUBJECT TO APPROVAL BY THE COUNTY EROSION CONTROL INSPECTOR.
80% REMOVAL RATE E&SC PROFFER ADDITIONAL REQUIRED EROSION MEASURES:
IN ADDITION TO THE NORMALLY REQUIRED ESC PRACTICES, ADDITIONAL MEASURES WILL BE TAKEN TO PROVIDE AN 80% REMOVAL RATE:
1. A MINIMUM OF 20% ADDITIONAL WET STORAGE AND 20% ADDITIONAL DRY STORAGE IS PROVIDED IN EACH SEDIMENT BASIN.
2. WIRE REINFORCED SILT FENCE, WITH STAKE SPACING AT 6' MINIMUM, SHALL BE USED INSTEAD OF THE TRADITIONAL SILT FENCE.
3. ALL TURFED AREAS SHALL RECEIVE PERMANENT SEEDING/MATTING WITHIN 7 DAYS OF FINAL GRADING COMPLETION, ANY INCOMPLETE AREA OF CONSTRUCTION THAT REMAINS DORMANT FOR MORE
THAN 14 DAYS SHALL RECEIVE TEMPORARY SEEDING.
4. ALAN FRANKLIN PE, LLC WILL SERVE AS A THIRD PARTY INSPECTOR TO ENSURE THAT THE APPROPRIATE MEASURES ARE BEING APPLIED AND TO MAKE SURE ADDITIONAL MEASURES ARE NOT REQUIRED.
THESE THIRD PARTY INSPECTIONS WILL OCCUR PRIOR TO AND IMMEDIATELY FOLLOWING INITIAL INSTALLATION OF EROSION AND SEDIMENT CONTROLS, ONCE A WEEK, WITHIN 24 HOURS OF ANY RUNOFF
PRODUCING STORM EVENT, AND AT THE COMPLETION OF THE PROJECT. ALL INSPECTIONS WILL BE DOCUMENTED BY A WRITTEN LOG AND FORWARD TO THE COUNTY INSPECTOR. THESE REPORTS WILL
CONTAIN THE DATE AND TIME OF INSPECTION, COMMENTS CONCERNING COMPLIANCE OR NONCOMPLIANCE, AND NOTES ON ANY VERBAL COMMUNICATIONS CONCERNING THE PROJECT.
CONST. 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 TYPE OF DRAINAGE STRUCTURES, CULVERT/PIPE SIZE, WEIRS, MATERIALS, INLETS OR END
TREATMENT(S), 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 EASEMENTS 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.
1-5. MANUFACTURERS CERTIFICATIONS FOR PROPRIETARY BMP'S CERTIFYING PROPER INSTALLATION AND
FUNCTIONING.
EXISTING CONDITIONS NOTE:
PHYSICAL, TOPOGRAPHIC & BOUNDARY: ROBERT LUM, DATED 5/30/03. ADDITIONAL SURVEY WORK PROVIDED BY THOMAS B. LINCOLN
LAND SURVEYORS, DATED 5/31/07 & 11/15107, EXISTING CONDITIONS AND TOPOGRAPHY VISUALLY VERIFIED BY ALAN FRANKLIN PE,
LLC AND LINCOLN SURVEYING WHILE ON SITE THROUGHOUT FEBRUARY 2017
CONSTRUCTION SEQUENCE:
STAGE 'A'
1. INSTALL CONSTRUCTION ENTRANCE AT EXISTING CURB CUT.
2. INSTALL PERIMETER SILT FENCE AND TREE PROTECTION. CONSULT THE TREE ARBORIST ANDIOR
LANDSCAPE ARCHITECT PRIOR TO BEGINNING WORK.
3. INSTALL SEDIMENT BASIN #1 NEXT TO CONSTRUCTION ENTRANCE. INSTALL STRUCTURES SD Al AND SD A2
AND RISER STRUCTURE CONCURRENTLY WITH CONSTRUCTION OF BASIN AND CONNECT TO SD EX1.
4. INSTALL DIVERSION DIKE #1 AND RIGHT OF WAY DIVERSION TO DIVERT ON -SITE WATER TO BASIN #1.
5. SECURE FLAT AREA FOR LAYDOWN, EQUIPMENT STORAGE, AND CONTRACTOR TRAILER. ADD STONE AS
SURFACE.
6. INSTALL SEDIMENT BASINS #2. INSTALL STRUCTURES SD G1 THOUGH G6 AND OUTLET/CHANNEL
PROTECTION CONCURRENTLY WITH CONSTRUCTION OF BASIN.
7. INSTALL REMAINING DIVERSION DIKES TO DIRECT WATER TO BASINS.
8. INSTALL SAFETY FENCE AROUND SEDIMENT BASINS.
9. CLEAR AND GRUB SITE. SEE LIMITS OF DISTURBANCE. CONSULT THE TREE ARBORIST ANDIOR LANDSCAPE
ARCHITECT PRIOR TO BEGINNING WORK. STRIP TOPSOIL AND STOCKPILE FOR LATER USE.
10. INSTALL CONSTRUCTION HAUL ROAD AS SHOWN AND PROCEED TO STAGE 'B'.
STAGE W
11. MAINTAIN PERIMETER CONTROLS FROM STAGE 'A' AS INDICATED ABOVE.
12. BEGIN ROUGH GRADING AND INSTALL RETAINING WALLS AS SHOWN ON STAGE W PLAN.
13. INSTALL DIVERSIONS AS NEED TO MAINTAIN DRAINAGE TO SEDIMENT BASINS. RETAINING WALLS WILL SERVE
TO DIVERT WATER TO BASINS.
14. INSTALL RIO ROAD FRONTAGE IMPROVEMENTS.
15. INSTALL SITE UTILITIES SUCH AS SANITARY SEWER, WATER, GAS, AND POWER AS SHOWN ON STAGE W
PLAN. MARK ENDS WITH WITNESS POSTS
16. INSTALL STORM DRAIN PIPING AND INLETS AS SHOWN ON STAGE W PLAN.
17. INSTALL INLET PROTECTION AND OUTLET PROTECTION ON NEW STORM STRUCTURE.
18. MAT, SEED AND MULCH STEEP SLOPES THAT WILL REMAIN AS SUCH TO BEGIN STABILIZATION PROCESS.
STAGE 'C'
19. MAINTAIN PERIMETER CONTROLS FROM STAGE W AS INDICATED ABOVE.
20. AS ROUGH FINAL GRADES AND.SUB-GRADES ARE ESTABLISHED, INSTALL STORM SEWER. ADD INLET
PROTECTION AT THESE LOCATIONS.
21. INSTALL PARKING AREA STONE BASE AND PERIMETER CURBING WHILE MAINTAINING INLET PROTECTION.
22. INSTALL CURB, SIDEWALKS, ETC. AND PLACE LANDSCAPING AND GROUNDCOVER PER PLANS. INSTALL
ASPHALT BASE PAVING AS SOON AS POSSIBLE.
23. REMOVE TEMPORARY DIVERSION DIKES ONCE NON -PAVED SEEDED AREAS ARE STABILIZED.
24. MAINTAIN SILT FENCE AND TREE PROTECTION ALONG PROPERTY BOUNDARY.
25. CONSULT REGULARLY WITH COUNTY EROSION CONTROL AGENT TO DETERMINE WHEN CERTAIN AREAS OF
SITE QUALIFY AS "STABILIZED." DECOMMISSION ES&C MEASURES AS PERMITTED. ENSURE THAT ADEQUATE
STABILIZATION PRIOR TO DEMOBILIZING SITE -WIDE IS ACCOMPLISHED.
26. THE STAGE 'C' PLAN CALLS FOR THE COMPLETE STABILIZATION AND INSTALLATION OF ALL SITE PLAN
IMPROVEMENTS FOR THE BUILDING D (THE BLAKE), AS SHOWN ON THE SITE PLAN, AND TURFED, PAD -READY
SITES FOR THE ROADS, DRIVES, PARKING AREAS, AND BUILDING PADS FOR BUILDINGS A-C, AND THE
TOWNHOMES.
27. ONCE THE STAGE 'C' PLAN HAS BEEN STABILIZED AND UPON PERMISSION FROM THE COUNTY INSPECTOR,
PROPERLY REMOVE SEDIMENT BASIN #2 AND CONVERT TO BIO-RETENTION BASIN.
STAGE 'D'
28. INSTALL DIVERSION DIKES AND SEDIMENT TRAP AT THE APARTMENTS SITE TO PROTECT BIO-RETENTION
BASIN DURING DEVELOPMENT OF APARTMENT BUILDING SITE.
29. REMOVE SEDIMENT BASIN #1 AND ESTABLISH A FLAT, TURFED AREA AT ELEVATION 560.00
30. INSTALL REMAINING STORM DRAINS/INLETS WITH INLET PROTECTION, REMAINING GRAVEL BASE OF ROADS,
PARKING AREAS, AND BUILDING PADS AND COMPLETE SITE PLAN IMPROVEMENTS FOR REMAIN BUILDINGS
UTILITIES.
31. INSTALL UNDERGROUND SWM FACILITIES & MAKE CONNECTIONS TO STORM D AND STORM A. DO NOT
INITIALIZE STORMWATER QUALITY UNIT UNTIL ALL PAVING IS COMPLETE.
32. ONCE ALL SITE PLAN IMPROVEMENTS ARE INSTALLED AND STABILIZED, REMOVE ALL PERIMETER AND
INTERNAL EROSION CONTROL MEASURES.
ADDITIONAL INFORMATION
33. FLUSH CLEAN COMPLETE STORM SYSTEM PRIOR TO DEMOBILIZING AND FINAL INSPECTION.
34. USE DUST CONTROL AS NECESSARY DURING CONSTRUCTION.
35. DO NOT INSTALL BIO-FILTER MEDIA IN BIO-FILTERS UNTIL SITE HAS BEEN STABILIZED APPROVAL BY COUNTY
INSPECTOR IS REQUIRED.
36. DO NOT MAKE STORMWATER QUALITY UNITS OPERATIONAL UNTIL SITE HAS BEEN STABILIZED. APPROVAL BY
COUNTY INSPECTOR IS REQUIRED.
ESC LEGEND:
SAF SAFETY FENCE
3.01 VA E&SC STD.
CE TEMP. STONE CONSTRUCTION ENTRANCE
3.02 VA E&SC STD.
CRS CONSTRUCTION ROAD STABILIZATION
3.03 VA E&SC STD.
SF SILT FENCE
3.05 VA E&SC STD.
IP INLET PROTECTION
3.07 VA E&SC STD.
DD CULVERT INLET PROTECTION
3.08 VA E&SC STD.
DD TEMPORARY DIVERSION DIKE
3.09 VA E&SC STD.
RWD RIGHT-OF-WAY DIVERSION
3.11 VA E&SC STD.
SB TEMPORARY SEDIMENT BASIN
3.14 VA E&SC STD.
OP OUTLET PROTECTION
3.18 VA E&SC STD.
TO TOP SOILING
3.30 VA E&SC STD.
TS TEMPORARY SEEDING
3.31 VA E&SC STD.
PS PERMANENT SEEDING
3.32 VA E&SC STD.
MU MULCHING
3.35 VA E&SC STD.
B/M SOIL STABILIZATION BLANKETS & MATTING
3.36 VA E&SC STD.
TP TREE PROTECTION
3.38 VA E&SC STD.
DC DUST CONTROL
3.39 VA E&SC STD.
LEGEND
W WATER LINE (EX. / PROP.)
WVO WMO WATER VALVE/ METER
FHA { FIRE HYDRANT
YHYARD HYDRANT
BOA 0 BLOW -OFF ASSEMBLY
SS SANITARY SEWER LINE (EX. / PROP.)
CO o CLEANOUT
MH•- MANHOLE
SD- STORM LINE (EX. / PROP.)
DI E-'0_1 STORM INLET
YD ® YARD DRAIN
DS o DOWNSPOUT
G GAS LINE (EX. / PROP.)
GV® GMO GAS VALVE/ METER
OHE OVERHEAD ELECTRIC (EX. / PROP.)
UGE UNDERGROUND ELECTRIC (EX. / PROP.)
PP0 POWER POLE
LP <' LIGHT POLE
GUY GUY WIRE
EM ELECTRIC METER
TRANSFORMER
OHT OVERHEAD COMMUNICATIONS (EX. / PROP.)
UGT UNDERGROUND COMMUNICATIONS (EX./ PROP.)
PED 0 UTILITY PEDESTAL
SWM / DWM o/a SINGLE / DOUBLE WATER METER
GV M GATE VALVE
BOA o BLOW OFF ASSEMBLY
- - - - - - BOUNDARY/ RIGHT-OF-WAY LINE
I.F. IRON PIN FOUND
I.S. IRON PIN SET
-- - - - - - -- SETBACK LINE
----------- EASEMENT LIMITS
- - - - CENTERLINE
670 CONTOUR LINE (EX. / PROP.)
(--3:1-- (-2.50% DEGREE/ DIRECTION OF SLOPE
479.70+ SPOT ELEVATION
HP HIGH POINT
LP LOW POINT
- - • - • • - DITCH / SWALE
= � � � = WATER COURSE
BM+ BENCHMARK
CG-2 VDOT STD. HEADER CURB
CG-6 VDOT STD. CURB & GUTTER
CG-12 VDOTSTD. HANDICAP RAMP
HC HANDICAP PARKING SYMBOL
DIP DUCTILE IRON PIPE
RCP REINFORCED CONCRETE PIPE
CMP CORRUGATED METAL PIPE
PVC POLYVI NYLCH LORI DE PIPE
HDPE HIGH -DENSITY POLYETHYLINE PIPE
VC VITRIFIED CLAY PIPE
FFE FINISHED FLOOR ELEVATION
TBR TO BE REMOVED
TBT TO BE TRANSPLANTED
TBS TO BE SAVED
SHEET INDEX
SHEET 2
SHEET 3
SHEET 4
SHEET 5
SHEET 6
SHEET 7
SHEET 8
SHEET 9
SHEET 10
SHEET 11
SHEET 12
SHEET 13
SHEET 14
SHEET 15
SHEET 16
SHEET 17
EXISTING CONDITIONS
GRADING PLAN (FROM SITE PLAN)
EROSION AND SEDIMENT CONTROL PLAN STAGE W
EROSION AND SEDIMENT CONTROL PLAN STAGE'S'
EROSION AND SEDIMENT CONTROL PLAN STAGE'C'
EROSION AND SEDIMENT CONTROL PLAN STAGED'
EROSION AND SEDIMENT CONTROL DETAILS
EROSION AND SEDIMENT CONTROL DETAILS
SWM: PRE -DEVELOPMENT DRAINAGE AREA MAP
SWM: POST -DEVELOPMENT DRAINAGE AREA MAP
SWM: WATER QUALITY/BMP AREA MAP
STORMWATER MANAGEMENT PLAN DETAILS
STORMWATER MANAGEMENT PLAN DETAILS
STORMWATER MANAGEMENT PLAN DETAILS
SWM PLAN: R-TANK MAINTENANCE NOTES
SWM PLAN: STORM -FILTER MAINTENANCE NOTES
REVISIONS
REV DATE DESCRIPTION SHEETS REVISED
1.
04-23-17
COUNTY ENGINEERING COMMENTS
ALL
05-31-17
APPROVED
2.
03-20-18
WPO AMENDMENT 1
10-13
03-26-18
APPROVED
3.
12-28-18
WPO AMENDMENT 2 - APARTMENTS
10-17
4.
04-11-19
COUNTY ENGINEERING COMMENTS
10-17
APPROVALS
PLANNING/ZONING
t
ENGINEER
BUILDING OFFICIAL
ACSA
VDOT
VICINITY MAP
1"= 300'
PROPERTY DATA
TMP 45-26A3 - OAKLEIGH ALBEMARLE, LLC
TMP 45-26A4 - OAKLEIGH ALBEMARLE, LLC
TMP 45-26A5 - OAKLEIGH ALBEMARLE, LLC
TMP 45-26A6 - OAKLEIGH ALBEMARLE, LLC
TMP 45-26A7 - THE BLAKE AT CHARLOTTESVILLE, LLC
TMP 45-26A8 - OAKLEIGH ALBEMARLE, LLC
TMP 45-26A9 - OAKLEIGH ALBEMARLE, LLC
TMP 45-26136 - OAKLEIGH ALBEMARLE, LLC
SOIL DATA:
278 ELIOAK LOAM, 2 TO 7 PERCENT SLOPES
65B PACOLET SANDY LOAM, 2 TO 7 PERCENT SLOPES
65C PACOLET SANDY LOAM, 7 TO 15 PERCENT SLOPES
94C WEDOWEE SANDY LOAM, 7 TO 15 PERCENT SLOPES
Edwards designStudlo, PLLC
Landscape Architecture and Site
Planning
4936 Old Boonsboro Road
Lynchburg, VA 24503
telel 434.531.7507
el steve@edwardsdesignstudio.com
www.edwardsdeslgnstudio.com
ALAN G. FRANKLIN, P.E. LLC
Civil and Site Planning Engineering
427 Cranberry Lane, Crozet, VA 22932
teiel 434.531.5544
el alan@alanfranklinpe.com
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ISSUED:
17 DEC. 2018
REVISIONS:
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550 / �� / NOTE: PRIOR TO ANY DEMOLITION THE TREE
ARBORIST SHALL BE CONSULTED AND MADE 7 STAND OEPJNE 000 0.115 \ \
/ AWARE OF THE CONSTRUCTION SCHEDULE IN --�® THE S / / / TMP 45-26A1 THE \ BENCHMARK
o is 30" / / 'sow / O 120" ORDER TO BE ON -SITE DURING THE �• -' Now or Formerly �\ GARDEN
\ EXISTING FHA;
UND ON P OF \ \
-O a � � �- _,_,._- -/ \ ELEV.
�( / / / DEMOLITION. CONTRACTOR SHALL INSTALL - / EJM GARDEN, LLC +/- 589' TO
ALL TREE PROTECTION MEASURES PRIOR TO J f D.B. 2717 PG. 746 \ �� ` HERITAGE \
1 - �' DEMOLITION AND FOLLOW ALL THE / DENSER '� Zoned: C1 IPA \ G) �� HALL \, PRIOR TO CONSTRUCTION: RECOMMENDATIONS OF THE ARBORIST TO / VEGETATION IN �� om Plan: Urban Density
� \ \ \ \
1. THE CONTRACTOR SHALL INSTALL TREE PROTECTION FENCING BEFORE 1\ ENSURE THE SURVIVAL OF THE TREES BEING / THISAREA ___ ; 0 ^� p• ty ENTRANCE \
DEMOLITION OF BUILDINGS. �- / Use: Commercial \ \ `
2. CONTRACTOR AND ARBORIST SHALL DEVELOP A PLAN FOR REMOVAL OF THE PRESERVED. CONTRACTOR WILL BE HELD / �- �I \ \
TREES NOT BEING PRESERVED ON SITE BEFORE START OF DEMOLITION. ll ACCOUNTABLE FOR ANY TREE DAMAGE / '' �► �" \, N
3. CONTRACTOR SHALL TRENCH ALONG TREE PROTECTION PERIMETERS TO CUT t RESULTING FROM THEIR, OR THEIR
ROOTS AS INSTRUCTED BY THE ARBORIST. / \
SUB -CONTRACTORS ACTIONS. CONTRACTOR / / I" -'r �`Pr �',°
4. THE REMOVAL OF TREES WITHIN TREE PROTECTION AREAS O
U �
(2A,5A,24B,26,36,37,39,44E) SHALL BE BY SAW AND STUMP GRINDER OR AS / SHALL BE SUBJECT TO FINES FOR DAMAGES r CHAINLINK FENCE IO `� '� s___
OTHERWISE DIRECTED BY THE ARBORIST. KEEP CHIPS ON SITE FOR USE IN AS OUTLINED IN THESE PLANS. ALL DAMAGES o TERMINATE OVERHEAD \
/ / REMAIN OR REPLACED BY / \ _ _ \ ELECTRIC SERVICE AND
O TREE PRESERVATION AREAS. WILL BE DETERMINED BY ARBORIST. SEE ♦ OWNER WITH PERMISSION / ~�, �-�-
5. TREE PROTECTION FENCING TO BE INSTALLED BY THE CONTRACTOR AS / SHEET 6 CONSERVATION PLAN `� OF THE GARDEN SPOT PLACE UNDERGROUND ` \
INDICATED ON THE APPROVED FINAL SITE PLAN. `
6. TO AVOID DAMAGE OF SURROUNDING CANOPIES, SOME TREES IN '� / ADDITIONAL INFORMATION. FOR / 'TMP 45-26A6 / ' ' GRAVEL AREA -_ _ , -`�� `�`\ '/ \. +%- 1135' TO
CONSTRUCTION ZONES MAY NEED TO BE BRUSHED OUT BEFORE FELLING AND / i /�•' / Now or Formerly
\ 1 A �� BERKMAR DRIVE &
/ y /
— 1
REMOVAL OF STUMPS WITH HEAVY EQUIPMENT. � ,i / OAKLEIGH ALBEMARLE L -=' � 2
/ +/- 259 TO
7. THE ARBORIST SHALL ASSESS TREES FOR HAZARDS AND INTERFERENCE WITH / / /$��. , �' / / --- / EX. 9URB &
CONSTRUCTION ACTIVITIES AND PRUNE AS NEEDED. / Zoned' NMD 3 '� \ -- � _.. WOODBURN RD.
._--�- --- / Gy \ GUTTTER TO
8, THE ARBORIST SHALL CONDUCT WEEKLY SITE VISITS TO VERIFY COMPLIANCE / / ' �Z�o3O • ♦ '/ �� y - -� ` - A \ �� �� \ G REMOVED
WITH TREE PRESERVATION POLICIES AND TO EVALUATE TREE HEALTH. - !/ %'� -- / _ _y` IN ORDER TO
/ '' p�DcO' S- O ALLOW FOR \ \
9. ARBORIST SHALL CONSULT OWNER AS NEEDED FOR ARBORICULTURAL ISSUES / 26A9- 57o \` _- ��' \ ,
THROUGHOUT PROJECT. / / / 11i \ 10A _ , \ � 4,B \NF1W BURN
10. FOLLOWING CONSTRUCTION (AS NEEDED AND AUTHORIZED) THE ARBORIST ovyar"�ormerly �� 1 1 O \ _-- �. 4� , AND T PER
SHALL: �' /� AKL&fGH ALBEMARLE, LLC
a. FERTILIZE WITH ADDITIONAL MYCORRHIZAE AFTER FINAL GRADING IS / Zoned: NMD
COMPLETED. THIS MAY BE DONE IN DIFFERENT AREAS AT DIFFERENT TIMES /' /11 ♦ `. �� / - - l �c�
IF THE PROJECT IS COMPLETED IN PHASES. / ''� ` ! �- i
o b. PRUNE TREES TO ELIMINATE DEAD, DYING OR INTERFERING BRANCHES. '� / _ 1 1 1 / ♦ \ ,/�.ii� \ / PORTION OF EXISTING DRIVEWAY
cPROTECTION/ / r - �/ \ / ` ` TO RE AIN OPEN TO SERV AS AN /
. ARBORIST SHALL INSTALL LIGHTNING � - _ - _ _. __ - - _ / ! • IN THOSE TREES � � -- - _ /' � ,,.. � � � � \ I M
DETERMINED BY THE ARBORIST TO WARRANT SUCH PROTECTION. ''\, J / ® EMERGENCY ACCESS ROUE IF OP EN PAST RE
d. IRRIGATE IF NECESSARY TO SUPPLEMENT RAINFALL.
NEED / r \ ! \
e. ARBORIST SHALL CONDUCT REGULAR INTEGRATED PEST MANAGEMENT � / �. X
IPM VISITS DURING 1-Y-"- _ o \.
\\ ( ) S S U G THE GROWING SEASON FOR A PERIOD OF 5 YEARS, / / \ 7 �_ "( \
STARTING UPON THE ISSUANCE OF THE LAST CERTIFICATE OF OCCUPANCY / / 13 \ \ or Formerly
WITHIN THE PROJECT TO INSPECT FOR INSECT, DISEASE, NUTRIENT OR / -- --� )�4
/ AKLEIGH LBEMARI, L I / TMP 45=26A3 \ to
\ ENVIRONMENTAL PROBLEMS. �� �, 1-OD ��� /
o ` d NMD I / Now or formerly/ /
TBR' OAKLEIGH A BEMARLE LLC \ /
/ TYP. L /
,%'`, - `�.- �A 0E� '� \ / Zoned: NMD// \ o/�
28X
/ 17A 17 10
�.✓ 29 l 3 ELECTRIC
N ~/ '� ,� I l / / / B. 747 PT. 2 ° 'O \ \
\ I ( w0 X
% \ ` X27A ' 27� 1 TMP 45-26F6
\ \ / r- /__- ,� -- � Now or Form rly
\ N / - �. 2 - r--
�� 0 _ _ - \ ` OAKLEIG
/ �_ ~ `r OVERH AD ELECT IC LINES ND
- I ALBEM/►RLE LL
` / OTHER SERVICES TO BE PLACED
\\ 1 BREAK FENCE AND / ~` \ 1 -'j� � j �1 I�1 J l r '
REMOVE TREES'AS / / 3� /,-�� / I�{_ Zoned: NM UNDERGROUND ALONG FRONTAGE
NECESSARY TO PERMIT / I �� J ' / / WITHIN EXISTING EASEMENT. ANY
THE SEWER EXTENSION / /� \ 31 I ' EXISTING POLF�S/PEDESTALS/ETC. \� O 0U E 659
NOT NEEDED SHALL BE RBAOV�D RB I
I I / _ �/ _ -------1--- — / --.
- ,�� - _�- --r3�R+NG-�R9eEss /
\ // I I / • \ TBR; 24� � 24 J 32 C o r
PEN PASTURE TYP. -� f / -� �, \ / % / P I
ASPF�IALT / I f _ --/ II
PARKING / I ^, �` .J \ I I t 1 -C A /, O� 6X. TO E II
/ � � � .. _ ' � X~ -�. - - - - - - - - - - OBE° EMOVE FROMATKE t
Z �' 24B \ 2B EX. ENTRANCE VVEST TO THE REMOV AND Il
1 1 I
j � 33A � FIRST ENTRAN E TO T E I j R PLIACE {j
�� I CARD N SPOTWND EAST TO
- THE PROPER LINE }
GA
39 X
VDOF DRAINIGE ESM T- 1 I I4
38A® 3B / (PROiJ. # 063-002-18�5. C501) Il II
� / 2 � J � 1 l 1 � I � II � � {►
TO BE ADJU TED/A ANDONED �O
40 � _ � � � I � � � � E ?ENT CE
/ ` ___ , 1� $ 5 I / / ( I AND CUL1ilERT TO l E TWI ,
35D / / / 1 1 R MOVE ONCE NEW
I 1 ,,, o 40A \ 5sa /--=� / / f / 1 1 ENTRANgE IS IN LACE
(� -, ' UP Il __ ` �/ TMP 45- 6A5 J E ISTING OV � RHEAD LI S AND POLES MAY BE I /
/ I o \ / C TEL F1-6DA 1 1 /� J S ~-1 ----- -..__ 5C % I O Q 4
/ USED FOR TEMPORARY ERVICES. ONCE THESE 4 4
TMP 4�5 26A4
��,, .- \ \ ..., � �,,UP W/ TRANSF \ 34 / Now or �oormerly � 1 � - 1
1 --�_— - / #KB92 OAKLEIGH A EMARL/E, LLC N y Y X {y
\ ` I RE NO LONGER NEED D THEN THEY ARE TO BE N w or Formerly = I
REMOVED BACK TO RI ROAD AND ANY
/ 1 OAKLEI� ALJ EMARLE ,LLC
1 I ` F / Zo�ed: NMD/ /ABANDONDED EASE ARE O BE ! Z
TMP 45- 6A7 ' l ' l J one . NMD / 11 I1 I
Now or Formerly __ -r ' ``- =� OPEN PA URE /� / LOWEST BRANCHLS OF EX. L YLAND CYRESS 1 I cn I
I _ r --- - - 0" HEDG ROW TO REMOVE4TO ENAB�E j / / O II
-- r / 1 j m l
l l THE BLAKE AT CHARLOTTESVILLE, LLC O / -o rr
i' O"E / 1 � �' / / INSTALLATION SILT FENCE JUST U�HILL OF / J / � II
f 1 ■ 41 �� Zoned: NMD�� - _'' (�"� I THE 'TRUNKS.JAINOR FILL,PLACEMENT UND R = m P
`. \
r \ UP DR LINE MAY RE UIR D. / i
,iry X ' / _ I Q /EX. FEENCE TO BE EMOVJ D
° \ --` °"E --- % ' / / UP TO THE SW CORNER
°"� --� / ( S46°49'18' V11
_/ �)
� I■ I■ .® �� i■ � I■ � It I■ I. I■ ® � I■ I■ � I I I
�, ® \ \� EXISTING FENCE TO BE REMOVED ALONG EX. TREELINE; / �- - ___ ^_, _, 1 "� i 354�45' / }I FHA
TMP''45-26 \ TYP. I / �_ --- -'" 57 -- -- - - - -- --' -�
II APPROXIMATE
PROPERTY LIN�AS NEEDED TO COMPLETE SITE 34B -- --- -- -- I
5,o--Now-or Formerly 43 / a / ---�_ — — r __-_ --- o r - -- kEMO TO IF / j
IMPROVEMENTS. FENCING MAYBE ADDED BACK V / -- — _ �`` -so f - " I ss LOCATION TO END
� ''�.- /. .`, / � � / --- �- �- _ - � ----- -"' �E -- �. --- __-- �-- - REMOVED IF NEEDED � ° EMO OF EXISTING
MEDICAL -FACILITIES OF AMERICA _ _ --.. AT OWNERS DISCRETION ALONG THE SITES , / / - -- _ _ -- _ _ L FOR CONSTRICTION �W1 i I
�`'` PERIMETER --_ / / C/) �� � ._.o�.- --- �" --�-=� �-- -- so.� Q II SIDEWALK II
D.B. 3678 PG. 655- `� __ // / _ _ LP - L� _ �-
4 o _
Zoned: R6 �` 34 '' � /�� /� EX. CONRE E W LL
Comp. Plan: Urban Density - s� '- o� /� / /// / ('`�= o uP II
Use: Residential UP �tg CENTEL F1 6C
CENTEL F1-6D \ / / 4'N / x _- 4 SPACES AND CURBING `
\ `•,4� p C / S46�49'W — —' �� / / f I / \ EX. ASPHALT�RKIIVG TO BE REMOVED FOR UPS
44A7 ., 4�I C �� G ///' f / _ r INTERCONNECTION TYP. /�~ ��
--. � � ERMINATE OVERHEAD
LECTRIC SERVICE AND
_ / lock Al Block Al
--- - --''--_. `'� / �� \ ��__.. L w� I LACE UNDERGROUND I
..-s70-- - r_--_ - - -- Ad TMP 61 M- 12-1A2 thru 1A6 TMP 61 M--12-1A1 _ I
-- ~`^- ,�j --' �— --_ _ __ - -- -- -" / ,✓� ` BERKM -R CROSSINd BERKMAR CROSSING
_560_. �- C ONDOI�I�fN� M-ASSOCIATION'S, CONDOMINIUM II
I lock 5 '` ,.., �` ---.-` ---_ � Blo k 6 ` .� /� / / / / � f ASSOCIATIONS, ET AL
Lot 19 `� Block 6 ` - _�I �;� __^_`_`�`______�____ I Z nq ed: C1 Zoned: PDMC
,,,,� Lot 1 \ L t 2 I t 560 - I omp. Plan: Community S 'Nice Comp. Plan: Community Service
T 61M -05-19 � s, M 2�`- � JI I
TMP 91 M--06-1 "06- �, - II ! Use: Co rrfercial-Offi a Use; Commercial -Office
w or Formerly I ow or_ rl / Block F1 Bock F1 II � , II
WILLIAM . THOMAS OR RA EL I Now or Formerly I y \ TMP 61 M 13-2F1 thru 2F4 TMP 61 M--13-1 F1 thru F5 III e--Chart See Chart
T. CASTILLO PREMIL OR RANKA CETIC I Of S. W K .INE / ERKMAR CRO SING CONDOMINIUM �. BE MAR CROSSING CONDOMINIUM II / -�' / JJ \ ti
D.B. 804 PG. 52 �
D.B. 2829 PG. 593 D.B. 2301 PG. 366 ASSOCI TIONS, ET AL ASSOCIATIONS, ET AL
-_� W.B. 72 PG. W.B. 72 PG 148 II
Co PZone : R2 Z ned: C1 Zoned: C1
an: Nei �borhood ensit zone(, 2 Zoned: R2 Comp. ommunit Service Clom .Plan: Community Service II - �/ BERKMAR CROSSING
I p Use: Re idential y Comp. Plan: Neigh orhood Density Comp. Plan: Neighborhood Density p y p y II IJ I II
I Use: Residential Use: Co mercial-Office Use: Commercial -Office
Use: Res ential I --------
S e Chart See Chart II II i
I F__~
SURVEY DATA: ADJACENT OWNERS NOTES: TREE INVENTORY:
1. PHYSICAL TOPO GRAPHIC &BOUNDARY:
ROBERT LUM, DATED 5/30/03.
2. ADDITIONAL SURVEY WORK PROVIDED BY
THOMAS B. LINCOLN LAND SURVEYORS, DATED
5/31107 & 11/15107. DATUM: NAVD 83 (STATE
PLANE); BENCHMARK: TOP OF FIRE HYDRANT;
ELEVATION = 566.50
3. CURVE DATA:
G1 = R 2648.37 D 4 3214 T 104.92 L 209.72
4. LEGEND:
BG = BLACK GUM CHR = CHERRY
HEM = HEMLOCK LOC = LOCUST
RO = RED OAK RM = RED MAPLE
VP = VIRGINIA PINE WAL = WALNUT
WO = WHITE OAK
KeyTree Caliper Health TBR Key Tree Caliper Health TBR Key Tree Caliper Health TBR Key Tree Caliper Health TBR Key Tree Caliper Health TBR Key Tree Caliper Health TBR
LIE WITHIN FLOOD ZONE C AS::::.._ .._._. r.
1. THE PROPERTY S 00 O_::....,
_... �:..: ...: ....... « ..... _.. .....,.... ; :.� _ , ... _...� .,..._< Good Amara e Poor Dead
«...,. .. .... _ : _:.... .. .... s : ..... ........ _..._ .. , .... .... ... .. ......._ Average Poor Dead <.,:: ,�< Ga _ . .. _ _ ........... � .......... ........ ... , x ..._ . _..__<_...... .:. _ ...,_..:.... a P r D ad <.: � . .::..,, :> ...:.. ...:. Good vs a e _._ , , ... _ - .... ......._ :::. _.. _....... _ : ...:... _ _ - - Good Awr e oo a .... :..... 9 _ _. ...... .. ...._:. .�... _ - ,,. �:. „ >.._ : .._: d Average Poor D ad ........ .. ...
..... ,-..�.. -- .. � _ : :..:.:... . .......... a r Dead .... � .........., Goo ve e e 9 ,... _..... _ : <. - - - ......._... Good Average Pao e . - ..:. _. .... ......_ _ 9 -
:. _. Dad , _ _.,._ >..._ _:_>.. <... >_:. _ : - -
_. _ Good Average Poor e _. :.: .. _.x, :._.. 9 ._ _ _,_-..,.._ ....---._._�...._.._---�-_ -- .-____-_ =---- - ---
SHOWN ON THE FIRM MAP PANEL NO:-----_._._...�_._.__.._. ,___..__ _ _..�_F. ___�__-- _
O 4 X
5100060230B. 1 American Holly 12" X 8 White Oak 36" X 13 White Oak 20" X X 24B Holly 8" X X 33B Dogwood 8" X X 39 White ak 8 X
M..
1A Red Oak 14" X ,;; 9 White Oak 36" X 14 White Oak 36" X X .; 25 White Oak 33" X X 33C Red Oak 12" X X,. 39A Holly 8" X X ;
2. THIS PROPERTY DOES NOT HAVE ANY 2 Red Oak 20" X 10 Red Oak 24' X X 14A Black Gum 15' X X 26 White Oak 39" X X 34 Red Oak 24" X X 40 Cherry 18" X
CRITICAL SLOPES. 2A Walnut 12" X X 10A Red Oak 20" X X 15 White Oak 30" X X 27 White Oak 36" X X 34A Cedar 10" X X 40A Walnut 10" X X
3 Walnut 18" X X : 10B White Oak 40" X X ? 16 White Oak 36" X X :- 27A Hemlock 12" X X 34B Cedar 8" X X : 41 Red Oak 27" X X '
3. COORDINATE 1983 4 White Oak 18" X 10C White Oak 20" X X ; 17 White Oak 42" X X 28 White Oak 18" X X 35 Red Oak 20" X X ; 42 Cherry 22" X X
DATUM: STATE PLANE R.. - -
BENCHMARK: TOP OF FHA ELEV. 566.50 4A Cedar 14" - X X 10D White Oak 20" X X 17A Hemlock 8" X X 29 White Oak 30" X X - 35A Red Oak 10" X X 43 Cherry 24 X X
46 Cedar 15" X Ox 10E White Oak 42" X X 18 Red Oak 36" X X 30 White Oak 36" X 35B Holly 6" X X 44 Red Oak 28 X X ,
4C Cedar 10" X X 10F Holly 15" X tul 19 White Oak 50 X X 31 White Oak 36" X 35C Holly 8" X 44A Cedar 15" X X
SOIL DATA
5 Red Oak 33" X 11 Red Oak 24" X X 20 White Oak 24" X X 31A Holly 8" X 35D Holly 10" X X 44B Red Oak 15" X X
5A Red Oak 15" X 11 A Red Oak 18" X X 21 White Oak 27" X X 32 White Oak 48" X 36 Walnut 27" X X 44C Cedar 12" X X
27B ELIOAK LOAM 2 TO 7 PERCENT SLOPES 6 Red Oak 28" X X 11 B Red Oak 18" X X , _- 21 A Oak NA X X 32A White Oak 6" X X _ 36A Cherry 8" X X _ 44D Virginia Pine 15" X X
65B PAGOLET SANDY LOAM, 2 TO 7 PERCENT SLOPES 6A Holly 15" X X 11C Virginia Pine 15" X X 22 White Oak 30" X X 32B Hemlock 6" X X . - 37 Locust 18" X X ; - 44E Cedar 20" X X
65C PACOLET SANDY LOAM, 7 TO 15 PERCENT SLOPES 66 Red Oak 10 X X 11 D Virginia Pine 15" X X 23 White Oak 20" X X -< 32C Hemlock 6" X X 38 White Oak 35' X X , _-
94C WEDOWEE SANDY LOAM, 7 TO 15 PERCENT SLOPES 6C Red Oak 12" X 11 E Virginia Pine 15" X X 24 White Oak 43" X X = ' .., 33 Red Oak 44" X X ' 38A Cedar 8" X X
_ _.
7 White Oak 42" X 12 1 White Oak 32" 1 X X 24A I Oak NA X ,X., 33A Holly 10" X X - 38B I Red Maplet7TF7E X
■
Tax Ma p & Parcel jOwner
- �._W...,-.-..-
D.B. - PG.
61M--12-1A1 jAnthony
or Mary K. Valente
1613-447
61 M--12-1 A2
I"KOM, LLC
3049-506
61M--12-1A3 IMTB
_
Investments, LLC -,L�-
3072-660
61M--12-1A4
DEMREP L�174
L_C
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I61M--12-1A5_
W. or Joan B. Hackett -Scott
1606-439
_Stephen
1M r6--12-1A6_
161M--13-1F1
_ DEMREP, LLC
Lawrence L. or Priscilla Critzer
�-1726-211�
1521-280{
161 M 13 1 F2
61 M 13 1 F3
61M-1 -1F4- ��a
61 M--13-1 F5
61 M--13-2F1 ___l
Russell L., Jr. or Jeanne C. Miller
Kenneth L. Davis _ _
Dnil3
e and _Gra_ham Spen_ce,
Russell L., Jr.ror Jeanne C. Miller_ �.I
Joe _� I M. Schectman or Lisa Draine�
1533 295
2662-499
_5 841
19022-485�
3282-303
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61M-13-2173
Montie A. or June M. Pritchett j
,D nvant H. or De_vyani D. Goradia
2460-121
1901-391
61M--13-2F4
IDEMREP, LLC #
1 1700-147
Edwards designStudlo, PLLC
Landscape Architecture and Site
Planning
4936 Old Boonsboro Road
Lynchburg, VA 24503
teiel 434.531.7507
el steve@edwardsdesignstudio.com
www,edwardsdeslgnstudio.com
ALAN G. FRANKLIN, P.E. LLC
Civil and Site Planning Engineering
427 Cranberry Lane, Crozet, VA 22932
telel 434.531.5544
el alan@alanfranklinpe.com
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r NO�IY / _1 �J\ 1� . " p' :SAFE RTY gIUIYGMBE
TO TOP AND OUTSIDE WALL FACE. SEE
WALL DRAWINGS FOR DETAILS-,
~ APPROXIMATE LIMIT-S,OF -
TREE SAVED AREAS; TYI\
' RESIDENTIAL
1
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NOTE:
FOR ADDITIONAL DETAIL AND
INFORMATION REGARDING THE
PROTECTION METHODS OF THE EXISTING
TREES SEE SHEET 6, TITLED
CONS ERVATION PLAN .
Edwards designStudio, PLLC
Landscape Architecture and Site
Planning
4936 Old Boonsboro Road
Lynchburg, VA 24503
telel 434.531.7507
el steve@edwardsdesignstudio.com
www.edwardsdesignstudio.com
ALAN G. FRANKLIN, P.E. LLC
Civil and Site Planning Engineering
427 Cranberry Lane, Crozet, VA 22932
telel 434.531.5544
el alan@alanfranklinpe.com
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NOTE: PRIOR TO ANY DEMOLITION THE TREE
ARBORIST SHALL BE CONSULTED AND MADE
AWARE OF THE CONSTRUCTION SCHEDULE IN
ORDER TO BE ON -SITE DURING THE
SEE SHEET 8 FOR / \ `�� j� / ' / / r -- / \ \ \ I DEMOLITION. CONTRACTOR SHALL INSTALL
CONTINUATION /
550 o % •/ _-- ``" /' / -'' / / \ ALL TREE PROTECTION MEASURES PRIOR TO
f
DEOMLITION AND FOLLOW ALL THE
RECOMMENDATIONS OF THE ARBORIST TO
ENSURE THE SURVIVAL OF THE TREES BEING
<_�_
WATERLI# / °/ - \G' PRESERVED. CONTRACTOR WILL BE HELD
WIRE REINFORCED / \
SILT FENCE, TYP. F,�-•---SF \ \ \ ACCOUNTABLE FOR ANY TREE DAMAGED AS
THE GARDEN SPOT s \ G)\ A RESULT OF THIER, OR THIER
SUB -CONTRACTORS, ACTIONS. FINES WILL BE
INCURRED AT THE CONTRACTOR'S EXPENSE.
LIMITS OF ALL DAMAGES WILL BE DETERMINED BY
�'' -�`" \ �" \ ARBORIST. SEE TREE CONSERVATION PLAN
SOILS TYP / (DISTURBANCE ,/ /
// � �/' EXISTII�
�/ 144STALL STORM DRAIN G WI H / / 1 / APPROX. 9.�AC) SF O _ o TREE LINE \ FOR ADDITIONAL DETAILS ON SHEETS 6&7 OF
C7 INSTALL TEMPO 30 I� CM / 1 \
65C � / OUTLET PROTECTION PRIO�i TO I RISER WITH C RETE BASE i� � gFp r.. / � THE FINAL SITE PLAN.
ILS TYPE �,+ /SEDIMENT BASIN #2 .. DIVERSION T,.,, \
-- ._.•% + ��'`•., / 48" OANTW RTEX DEVICE '� ,.�/ DID DIKE44 -'' TREES TO BE .. ,,,,
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/ + DRAINAGE �/ DEWATERING ORIFICE @_56.7.00 ♦ cP --- -- \ SIF
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C7 EASEMEN . /� INVV:•OUT 564.60 (15") /
¢ / / / �/ F F 'STOCKPILE
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)�" . �. r.-� �•- ---- �- SOIL �•--- // / EX. #J-
1. THE CONTRACTOR SHALL INSTALL TREE PROTECTION FENCING BEFORE DEMOLITION OF BUILDINGS. .. . ; / �/f `- r --- DIVIDE,TXP� / J / \ BERKMAR CROSSING ` y RW545
2. CONTRACTOR AND ARBORIST SHALL DEVELOP A PLAN FOR REMOVAL OF THE TREES NOT BEING PRESERVED ON SITE BEFORE START OF DEMOLITION. /
3. CONTRACTOR SHALL TRENCH ALONG TREE PROTECTION PERIMETERS TO CUT ROOTS AS INSTRUCTED BY THE ARBORIST. I �� �-' -' `-5sa-- 1 1
4. THE REMOVAL OF TREES WITHIN TREE PROTECTION AREAS (2A,5A,24B,26,36,37,39,44E) SHALL BE BY SAW AND STUMP GRINDER OR AS OTHERWISE DIRECTED BY THE ' �` - /� /
ARBORIST. KEEP CHIPS ON SITE FOR USE IN TREE PRESERVATION AREAS. Ip 3/4' A !
,� _-___�__ 1 tit lz ,
5. TREE PROTECTION FENCING TO BE INSTALLED BY THE CONTRACTOR AS INDICATED ON THE APPROVED FINAL SITE PLAN. CI` = M9545.56 `
�� I 560 / LIMITS OF V.OUT 641
6. TO AVOID DAMAGE OF SURROUNDING CANOPIES, SOME TREES IN CONSTRUCTION ZONES MAY NEED TO BE BRUSHED OUT BEFORE FELLING AND REMOVING STUMPS II / DISTURBANCE %
WITH HEAVY EQUIPMENT. EX. 01-1 , / / (APPROX. 9.78 AC)
RIM 550.11 I I / \
7. TREE AND STUMP REMOVAL FROM CONSTRUCTION ZONES. KEEP CHIPS ON SITE FOR TREE PRESERVATION AREAS AS NEEDED. \ INV. IN 644.32 III7 INLET IP t�
8. THE ARBORIST SHALL ASSESS TREES FOR HAZARDS AND INTERFERENCE WITH CONSTRUCTION ACTIVITIES AND PRUNE AS NEEDED. J ` INV. OUT 544.32 I I / ___ PROT CTI
9. THE ARBORIST SHALL CONDUCT WEEKLY SITE VISITS TO VERIFY COMPLIANCE WITH TREE PRESERVATION POLICIES AND TO EVALUATE TREE HEALTH. / 1
10. ARBORIST SHALL CONSULT OWNER AS NEEDED FOR ARBORICULTURAL ISSUES THROUGHOUT PROJECT. �l ® EX. DI--3B
} RIM 543.21
11. FOLLOWING CONSTRUCTION (AS NEEDED AND AUTHORIZED) THE ARBORIST SHALL: II EX. SMH BRKMRCR-i-2 INV. IN 537.78
!
' � y 4 1 I
a. FERTILIZE WITH ADDITIONAL MYCORRHIZAE AFTER FINAL GRADING IS COMPLETED. THIS MAYBE DONE IN DIFFERENT AREAS AT DIFFERENT TIMES IF THE PROJECT IS: RIM 549.27 II M INV. OUT 53-r.3
EX. SPAH EX. SDMN
INV. IN 642.75
COMPLETED IN PHASES. t
ss
b. PRUNE TREES TO ELIMINATE DEAD, DYING OR INTERFERING BRANCHES. ; INV. OUT541.29 II EX / EX 8 PVC RIM546.92 RIM543A5
, INV. IN 542.5t &V. IN 537.66 .�
c. ARBORIST SHALL INSTALL LIGHTNING PROTECTION IN THOSE TREES DETERMINED BY THE ARBORIST TO WARRANT SUCH PROTECTION. I II INV. OUT 542.32 NV. OUT 537
d. IRRIGATE IF NECESSARY To SUPPLEMENT RAINFALL. 11
e. ARBORIST SHALL CONDUCT REGULAR INTEGRATED PLANT MANAGEMENT (IPM) VISITS DURING THE GROWING SEASON FOR A PERIOD OF 5 YEARS, STARTING UPON
THE ISSUANCE OF THE LAST CERTIFICATE OF OCCUPANCY WITHIN THE PROJECT TO INSPECT FOR / INSECT, DISEASE, NUTRIENT OR ENVIRONMENTAL PROBLEMS. ri
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www.edwardsdesignstudio.com
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Civil and Site Planning Engineering
427 Cranberry Lane, Crozet, VA 22932
telel 434.531.5544
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....� 323.0CY :. 30 fd CMP
" DRY " STORAGE RISER CREST W148" 0
ELEV. 653.00 ' ' ' ' ' ' ' ' ' ANTI -VORTEX DEVICE
'.:.:.... , ELEV 653.00
349.0 C.Y.
• WET■STORAGE 4" D WATERING DEVICE
ELEV.551.00 - - -
W! 6" FLEXIBLE TUBING
ELEV. 551.00
SEDIMENT CLEANOUT POINT INV. 546.00
ELEV. 660.00 L__7�
DESIGN ELEVATIONS WITHOUT
EMERGENCY SPILLWAY
(RISER PASSES 50-YR. EVENT)
SEDIMENT BASIN #1 DESIGN ELEVATIONS
SECTION
G1-ai rage Area �ter\dsl
- i n Vd uTes: (Ld nq 1' aarta.x i
Wet Storage Fl�cl..i red (ay) (67 X DA) X 1.2
Cava Bring Ufloe Bevatiai (ft)
Wet Storage Presided at tHs Elution (cy)
A\eilaide V_d_uTe_Befcre Clea-uU (ay) (33'
Clea nci-t Ele\ation (ft)
D starve from C1eamA to C ifioe (ft) (�> 1).Dry staaw-
�E7y Storacp R--q-i red (cy) (67 X DN X 1.2
Prinaple SiilKAky 0-est (ft)
Cry Storages Prcr dad at t_Hs Ele\aticn (c_r)
E-060 Ciarreter cf E_-Merlrg Cfifioe (in)-�V��
N.T.S. C3 arreter cf Rena td e Tuki rg (n) (arifice+2 T
c (use 0.45 for lore earth)
tc (rri n)
i 25yr I 61
I50yr $ 66
Rirr_iple SFill+n�y:
A,,dIade Hal (ft)
Cia -iR RsEr (n)
St ilkAW C.apEdty,_q
aarT ter Trash FUa k
Barrel LeVh (ft)
Hid an Barrel thrcx i
C35T4er of Bard GI
1
1 Q<
131
�z
551.
349
117.
MIN. V W! SPILLWAY CREST OF EMERGENCY
2' WITHOUT SPILLWAY _
DESIGN HIGH WATER -
(25-YR. STORM ELEV.)
- 0.5' _
MIN ---------
I R15ER CREST _
DRY ' STORAGE DEWATERING
•...:, DEVICE
" WET ' STORAGE k-- .
..... _
M -
SEDIMENT CLEANOUT POINT '^
(• WE T4 "ORACER ;EDUCED -
Top cf Carn (ft) j
Top We th of Elm (ft)
Bottom of Basi In (ft) I
Tc E A_tc m CS rr a-d c:ris:
es: i._
jth of Rams
4. G," I L / VVe Oxftsreco red if > 4
�,_._._ I Collars:...._�...-.-....__._.... �.....-...v.
_I Egth of Wales- at Spllvxqy Lest (1
10.33Slope of Barrel I (�) ! _
_ h cf Ba- dl i n Stu-ated Zone
5.9 )N r rber Chars, R�Dgjr( d
6441 I Elr a-dcn of Cdlars I
1
11
Wired sty (�'�Cp) (qP
Bottom VVdh (ft) �11-M
Ropes of Ewt Chu y-rd (ft/ft) -
Mrirr n Len3h cf E)dt Cl-z"
y2:
TOP OF EMBANKMENT
ELEV. 572.00
DESIGN HIGH WATER
(50-YR. STORM ELEV.) iI
MIN 2.0'
ELEV. 569.55
MIN. 3.0'
MIN. 0.5' � MAX. 1.0'
60 34 C.Y. 30 o CMP
'DRY"STORAGE RISER CREST W! 48" O
ELEV. 569.00 ... ANTI -VORTEX DEVICE
ELEV 669.00
344.0 C.Y.
"WET "STORAGE •4" DEWATERING DEVICE
ELEV. 567.00 W16' FLEXIBLE TUBING
ELEV. 567.00
SEDIMENT CLEANOUT POINT INV. 564.60
ELEV. 565.50
DESIGN ELEVATIONS WITHOUT
EMERGENCY SPILLWAY
(RISER PASSES 50-YR. EVENT)
B_N� SEDIMENT BASIN #2 DESIGN ELEVATIONS
11-I '"�`' � $ ) SECTION
I I
�i rage Area (a mo
�i nn Vd un-es: (usi ng 1' oartax i nter'd S) -� - -
�I _13e atic n (ft) 0ariax A E)a (SO! Vd u€ m
571
VVA Stcxage Fegjred (cy) (6rEX
E a'irg Ufice Be,,eticn (ft)�
VVA Starege Proiclad at tHs Elev
A ai lafde Vd uTe EE#aia dea-6 ,t
CleQnuA EleIIdic n (ft) _
ClStance fra-n ClearaA to Ufice
Dy Storage:
Dy Stagy Pecpred (cy) (E37*M
_FNndFle SpIlvvW Crest (ft) -
E-060 Ry Stake Prcnided Et tHs Bey
N.T.S. El arre#e- of E�hAdEn rg Chi fice (n)
Clarrrateraf FIEDdtleTL irg (n) (a
FUndf: _ -
c (use 0.45 fcr bae earth)
to (rri n)
i � I QYww8
i 25yr -.. _ 56
i 50yr_ 60_ -_
NInd Ide Spllvtey:
A&WEde HeEd (ft)
Elarr er- Rser ( n) _
Spillvvay City, C P Fcfi _.. .
El an-ete- Trash Fblc (n)
E3aTd Lergth (ft)
F cn Barrel thfm6F Er�
Darreterof Bard (in)
� / / / SEDIMENT
O / BASIN #2 rc // / / /
10
LIIMITS OF r� k, / / / /, /,
DIISTURBANCE
(APPROW 9.78 AC)
"
EXISTING 20'
►AGE
�' � � J / / ! �. • j � _ '. •�/
COORDINATE OFF -SITE CONSTRUCTION I ' j x tt u EASE ENT, TYP.
SCHEDULE TO MIrMIZE DISRUPTION Olf r 3 x
HERITAGE HALL INGRESS/EGRESS
RESTORE PAVE�jENT AFTER CONSTRUC ION I 1 WIRER INFORCED q
/ x El SILT FE CE, TYP.SIF
P
C'A)
/ V /
q INSTALL STORM DRAIN I y� \
\LINE 'G' TO DRAIN � l \ '�'• .:
1 / e
DIMENT BASIN #2 AS
/ 1 j OF STAGE '� � A' \ �•
TO
PS -•
/ \ l 0 _ 1�.
j ! RIP RAP'LINED CHANNEL \ �,� - 00
Z DEPTH W/ ?.1 SIDE SLOPES
t TIE TO EX. CHANNEL AS \ I \
PART OF STAG 'A'
EXISTING - ( / /, - \ \
N 1 \
DRAINAGE LIMITS OF � �= •- \ � \
EASEMENT DISTURBANCE \ I + + !
(APPROX. 9.78 AC)
;A EXISTING\k8" S R YSTEM
(INADEQUATEORE IVI\
1
EXI I 18" STORMS STE CHANNEL) \ \
(INA ATE RECEIVICHA
\ EXISJII41G SUMP SERVES AS DE -FACTO LEVEL �j 1
-- ( SPREADER / / / / / xx I
r
LOCATJON OF CONCRETE DRAfNAGESTRUCTU E/
i-- "OF/Uf�KNOWN TYPE �
Ile,
I I
n.
MIN. 1'W/SPILLWAY CREST OF EMERGENCY
2' WITHOUT SPILLWAY .-.
DESIGN HIGH WATER
-
' (25-YR..'OR" ELEV.)
-.
.MIN to
-------- =---------
....
•••
RISER CREST
" DRY ' STORAGE ...!- .:
...:..'
DEWATERING
....
.:....
DEVICE
' WET ' STORAGE
SEDIMENT CLEANOUT POINT
(' WET " STORAGE REDUCED
TO 34 C.Y,/ ACRE)
---
321.0
j [)---,jgn Hgh VVEter
567 ( _
Top of ern (ft)
_
_
344.Q'
Top Wcth cf Ca-n (ft)
132 0,�
j Bottom of 13asi n (ft)LL
556 q �y
.AWcx. Bottom 0rmi-dcx-1
1.5
4StreEm Face Slap:
Dwi-strewn Face Sly 5671
321.6
Baffles:
569 0
LeVh cf FloN L (ft) ^
346
I EffectiV e WC#h, V\b (ft)
4. 0`
L / M (Left-, regli red if > 2)
_6.0
Col I ars F_
Depth cf Water at 1 KjIk oy Cest
Q 45;
Slope of t_Pstr eam Face (Z 1)
121q ..-_iSlope
_ - I
of E
6 $I
Lergth of Ek`- I n Saturated Zor
10
N-into- Cellars Rt gjred I
10 I #
Elrr €on cf Cdla-s
`s
- •Feel ired CqDECity (
)yid
M ri rrun LeVh of
dY ; cif �Wlv'av (1
SOURCE: MICHIGAN SOIL EROSION AND SEDIMENT
CONTROL GUIDEBOOK, 1975, AND USDA-SCS
m
FLOW N\X,,
\\\'...
1 FLOW
Z -
r
FLOW -� /�f ,\
FLOW
SEDIMENT -LADEN RUNOFF
AS
REQUIRED
DEPTH BELOW TOP OF INLET
MIN. V- MAX, 2'
71-
MAX. SLOPE 2:1._� .�_�_�_� �_ , =MT= _�_M=
7=III=III=III=111 I I I T I B I E._
�► I -III- '-' -
-1II- 4 II -III -I
M=m-
PLATE 3.07-4 1
STORM WATER WITH =11 I ° WEEP I I -III LARGER PARTICLES
LARGER PARTICLES SETTLE OUT
REMOVED I I II HOLES IIWI 1,
11 _ OR m-r
DEWATERING
all
I.�III
@;;;;DRAIN INLET =�=ll a LLI-LLI-L1
�III� ..... '. � . ' .. • �... I IiTjlll_jTr�
I I III=1 I I=1 I I=1 I I=1 I I=1 I I=1 11=1 11=III-I I I
SPECIFIC APPLICATION
THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE HEAVY FLOWS
ARE EXPECTED AND WHERE AN OVERFLOW CAPABILITY AND EASE OF
MAINTENANCE ARE DESIRABLE.
EXCAVATED DROP INLET SEDIMENT TRAP
SECTION E-011
N.T.S.
Edwards deslgnStudlo, PLLC
Landscape Architecture and Site
Planning
4936 Old Boonsboro Road
Lynchburg, VA 24503
telel 434.531.7507
el steve@edwardsdesignstudio.com
www.edwardsdeslgnstudio.com
ALAN G. FRANKLIN, P.E. LLC
Civil and Site Planning Engineering
427 Cranberry Lane, Crozet, VA 22932
telel 434.531.5544
el alan@alanfranklinpe.com
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SCALE: 1" = 30'
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ISSUED: 17 DEC. 2018
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REVISIONS:
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05.31.17 WPO APPROVED
-- 03.26.18 AMENDMENT 1 APP.
1. 12.28.18, AMENDMENT 2 Z
2. 04.11.19, CO. COMMENTS 0
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VSMP: Erosion
Control Details
OF 172
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/a OFF -SITE IMPROVEMENTS AND ESC MEASURES- (CHARLOTTESVILLE HEALTH & REHAB) -_ _m I
$ SCALE: 1" = 30' 0 15, 30, 80, 120'
■
Edwards designStudlo, PLLC
Landscape Architecture and Site
Planning
4936 Old Boonsboro Road
Lynchburg, VA 24503
DRAINAGE SWALE DIRECTS FLOW SOURCE: VA. DSWC PLATE. 3.07-3 SOURCE: VA. DSWC PLATE 3.07-6 SOURCE: VDOT ROAD AND BRIDGE STANDARDS PLATE: 3.36-5 telel 434.531.7507
TO SEDIMENT BASIN el steve@edwardsdesignstudio.com
70' MIN. www.edwardsdeslgnstudio.com
000011
3" SM-2A ASPHALT TOP COURSE �tµiN ALAN G. FRANKLIN, P.E. LLC
A EXISTING WIRE SCREEN CONCRETE BLOCK FILL SLOPE SECTION
-� �`' ,,\ �� � Civi! and Sife Planning Engineering
2% 2% PAVEMENT — �---�� �_r--�''�lr�� Q 427 Cranberry Lane, Crozet, VA 22932
-� 6" VDOT #21A II I SOIL STABILIZATION MATS SHOULD Q
DIVERSION DITCH A _----�� BE INSTALLED VERTICALLY 5• NOTE. SLOPE SURFACE teie 434.531.5544
AGGREGATE BASE ��DOWNSLOPE FOR BEST RESULTS. Q Q SHALL BE SMOOTH el aian@aianfranklinpe.com
AND FREE OFROCKSSIDE ELEVATION DIRT,
LUMPS OF
DIRT, GRASS AND KEY: ;t<
51
BEIPLACEDFLATLL
C/
Q fQ Q ON SURFACE FOR
Q PROPER SOIL
EXISTING GROUND �.'�� Q CONTACT.
-------------
70' MIN RJAP10'
MIN.
ASPHALT PAVED WASHRACK GRAVEL FILTER - ;'tt'
—� _
`4. Q Q DIRT SHALL BE G)11
12% r: r �- _ I ---
TAMPERED PRIOR s y/ "`'
—I f 1,�99(rlcoa of YA ;,�
TO LAYING TOP��`\��
12 MIN. EXISTING -I 11=1 —1?- --- LAP OVER ;`} ✓rr�t"1�f_�`�r�
PAVEMENT GRAVEL FILTER 12"
2% 2% WIRE SCREEN RUNOFF WATER - WIRE MESH
DIVERSION DITCH MIN. FILTERED WATER TOE BERM
POSITIVE DRAINAGE � FILTERED WATER
10, MIN.�> r d MAINTAIN SLOPE ANGLE TRENCH INTO BERM AND
WIDTH AT DESIGN WATER TO SEDIMENT OVERFLOW d PROGRESS DOWNSLOPE
ELEVATION IS 4.0' 1 TRAPPING DEVICE RUNOFF I "
WATER..........
WITH
SEDIMENT ... o i.
A.
PLAN VIEWMilI
P OF
• " DROP INLET
_ SLOPE LINING SLOPE LINING CUT SLOPE
WITH GATE 'A —
SEDIMENT
�I�II I �° (WET SLOPE) :s:- (DRY SLOPE) cn
MUST EXTEND FULL WIDTH SEDIMENTY CONCRETE GUTTERSET 1Y" WATER HYDRANT WITH 12 CURB INLET TREATMENT-2 W
OF INGRESS AND EGRESS 2
OPERATION FROST PROOF HYDRANT 3' SPECIFIC APPLICATION POLYPROPELYENE 2 /
ABOVE GRADE AND 4' OFF NON -WOVEN
70'MIN. TREATMENT-2 I--
EDGE OF PAVEMENT THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE (NEEDLE PUNCHED) C�
o HEAVY FLOWS ARE EXPECTED AND WHERE AN OVERFLOW SPECIFIC APPLICATION GE00 H(BEHINDIFILTER f)0 SOAQ 1F�EFt)
2 /o —.ylao-
_ _ I CAPACITY IS NECESSARY TO PREVENT EXCESSIVE PONDING TREATMENT-2) OF NN
I I I I. „ „ „ , I AROUND THE STRUCTURE.
SOIL BOTTOM OF FILL SLOPE
NOTE: A MINIMUM WATER TRAP OF 1" IS REQUIRED ;
WITH A MINIMUM WASH HOSE DIA. OF 1.5 GRAVEL SHALL BE VDOT #3, #357 OR #!5 COARSE AGGREGATE. THIS METHOD OF INLET PROTECTION IS APPLICABLE AT CURB INLETSWHERE PONDING IN FRONT OF THE STRUCTURE IS NOT LIKELY TO CAUSE
INCONVENIENCE OR DAMAGE TO ADJACENT STRUCTURES AND UNPROTECTED;' ' N ' ft-`
SECTION A -A AREAS. -- I —
BOTTOM OF CUT SLOPE LZ
` GRAVEL SHALL BE VDOT #3, #357 OR 5 COARSE AGGREGATE. BOTTOM OF CUT SLOPE 4' OR SHOULDER
�p �+ �" �( �° SEDIMENT
BREAK POINT
AL]BE ARLE COUNTY CONSTRUC IC"IN BLOCK & GRAVEL DROP IN�LeE JL SEDIMEN JL TYPICAL TREATMENT - 2 ❑ � „�..'�'f
('A_`� ENTRANCE(B`��FILTER C GRAVEL CURB INLET SEDIMENT FILTER � SOIL STABILIZATION MATTING & SLOPE INST. Z �
SECTION E-001 SECTION E-009 E-012 E-070 C
W �
N.T.B. N.T.B. SECTION N.T.S. DETAIL N.T.S.
S./ o
SOURCE: USDA SCS PRESSURE RELIEF OPLATE. 3.14.10
HOLES Ire DIA. S. (A
SOURCE: Adapted from Installation of Straw and Fabric Filter Barriers for Sediment Control PLATE. 3.05-1 Source: Va. SWCC Plate 3.11-1 13-
Sherwood & Wyant o
A 0 A o o
` TOP STIFFENER REQUIRED)
�a
—fl} IS X�4NGLWE WELDED
TO TOP AND ORIENTED PER -
STONE WEIR O O O O PENDICULAR TO CORRUGATIONS. 2 w
1. SET WOOD POSTS AT MINIMUM 8' 2. ATTACH ORANGE POLYETHELENE FABRIC REBUILD AS SIDE SLOPE REGRADED Q/ c
SPACING AND EXCAVATE A 4"X4" TRENCH SAFETY FENCING TO THE POSTS. TOP OF BERM TO 3:1 (MAX) Z v
aC�UP SLOPE ALONG THE LINE OF POSTS, NECESSARY 0 O TOP IS rerE CORRUGATED `M a
VDOT #1 O O METAL OR 115" STEEL PLATE.
O PRESSURE RELIEF HOLES MAY
0 BE OMMITTED, IF ENDS OF ^^
COARSE AGGREGATE 18CORRUGATIONS ARE LEFT FULLY {.L E
_ }
PLAN VIEW OPEN WHEN THE TOP IS o ua
ATTACHED.
Z ;.; ; ; 2
Q
LUCK BIO-FILTER MIX ° -►l`�' ti "
OR TESTED APPROVED TACKWELD WE DeD CYLINDER IS rnrE CORRUGATED .2
AND EQUIVALENT ALL aRouND METAL PIPE OR FABRICATED FROM 61/8' za
H STEEL PLATE. E c
JII{
�'' � O ��
ORIGINAL SILT UNDERDRAIN GRAVEL WMIN. NOTES: o
TRAP SIDESLOPE (AASHTO M43, 1. THE CYLINDER MUST BE o
IN FILTER
FIRMLYFASTENED TOTHE
r" II- 6' MINmum PROVIDE PIPES IN FILTER FABRIC TOP OF THE RISER. 0
ACROSS ENTIRE WIDTH REMOVE SILT AND #6X12' SUPPORT BAR SIZE 2. SUPPORT BARS ARE WELDED 3
- AT 20 FT O.C. SEDIMENT AFTER FINAL SPARER BAR (ne REBAR MIN.) TO THE TOP OF THE RISER 5
FLOW II"" I
to
RISER DIAMETER
I I I I I STABILIZATION. REPLACE t1vPl�u) BOR ATTACHED BY OLTED TO TOP OF RISER.
WITH LOAM OR GRANULAR _ o
i:.
4 EARTH FILL.
I o
TYPICAL GRAVEL STRUCTURE PROFILE SECTION A -A ISOMETRIC
ANTI- VORTEX DDEVICE DESIGN
0.2
3. ATTACH THE FILTER FABRIC TO THE SAFETY 4. BACKFILL AND COMPACT THE
FENCE AND EXTEND IT INTO THE TRENCH. EXCAVATED SOIL. DETAILE-080 = o
N.T.B. Q
m
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c
QE
to
COMPACTED SOIL Q r
0
TOP F BERM CLEAN -OUT C
O 0 W( WA ERTIGHT ZI
!I FLOW I I- 18" M1N. :'\ ; ' CAP 6" MAX -
r STONE 1'-0" o
�- �,/_ �� .�•-- WEIR o �
—I III 1� !1 � �' �?�.,s; eT'':.f^•''v: w��"g�S.�i �}: r��•,:: is l`�;,.v ;?•'.r��r 3 O
N
uiv
1p EXTENSION OF FABRIC AND WIRE INTO THE TRENCH. 4"-6" NON -PERFORATED 8 0
PVC 3
6, MINIMUM
SLOPE
1 %MIN, LOAM N R GRANULAR
4"-6" PERFORATED PVC c
f
FILTER FABRIC PIPE Q 1% MINI, SLOPE
pLTH OP 10
-
IIIIJ_ I I SAFETY I TYPICAL EARTHEN STRUCTURE CROSS-SECTION �� y, .T
FENCE
lu, � I—. r..a v Q• L
—I — - Alon G. Franklin
0
A Lic. No. 35326 ,� 3
CONSTRUCTION OF SUPER SILT FENCE 0� ?
E (USING ORANGE SAFETY FEIOTCE FOR SUPPORT) JFFORT) F TEMPORARY RIGHT e OF e WAY DIVERSIONS(_G_�SILT TRAP RETROFIT TO ]BIOFILTER ss' O N A L
DETAIL E-029 SECTION E-021 SECTION E-037 0
N.T.B. N.T.B. N.T.B. Q
o Iv
E
SOURCE: VA. DSWC PLATE 3.09-1 Source: Public Facilities Manual, Vol. III, Fairfax Co., Va.,1976 Plate 3.38-1 SOURCE: VA. DSWC PLATE. 3.14-3 Source: Va. DSWC A A o
Plate 3.18-1 SCALE: AS Shown v
12' ISSUED: 17 DEC. 2018 o
REVISIONS:
6 PIPE OUTLET TO FLAT
24" AREA WITH NO DEFINED a
05.31.17 WPO APPROVED
CHANNEL -- 03.26.18 AMENDMENT 1 APP.
Compacted Soil DRIP LINE 1. 12.28.18, AMENDMENT 2 Z
2. 04.11.19, CO. COMMENTS 0
1 PLAN VIEW I "
18" min. I I I I I I i
I I I I l PROTECTIVE DEVICE
,t ll It t Flow
Cn
All 1111011 IIIIAII -I-I-I- Z
MAXIMUM LIMITS OF
CLEARING AND GRADING
{�--15'
\ =1 I I -I I I- 6" - - - - - _ _______ _-
' PROPOSED GRADING - I 1-1 I -I - =1 �-- - I I I I III III- p °�� W1111
"4.5 min. —I I —III —III I —I III—I1I—II1=1II—III—I SHEET: Q
18 11= 0" —1I I—III1 I I=1 I 111I2' LL'I; W
-1 I I—III-1 l i=1 I I-1 I hI I I-1 I I h-I 11- I I-1 I M I hI I I I I M I M I I N
MIN. 5' 111=111=111--111=1 I I=1 I I — SECTION A -A FILTER CLOTH KEY IN 8'-8'; RECOMMENDED FOR ENTIRE PERIMETER W
WHERE DRIP LINE NOTES: 1. APRON LINING MAY BE RIPRAP, GROUTED RIPRAP, GABION
IS LESS THAN BASKET, OR CONCRETE,
5'64 2. La IS THE LENGTH OF THE RIPRAP APRON AS CALCULATED
CONSTRUCTION OPERATIONS RELATIVE TYPICAL CONCRETE BASE TYPICAL STEEL BASE USING
5TIMESPLATES
HEMA 3AND
MAXIMUM
O
3. d =1.5 TIMES THE MAXIMUM STONE DIAMETER, BUT NOT
TEMPORARY DIVERSION ]DIKE � TO THE LOCATION OF �PROTEC EIS TREES E RISER FIFE EASE CONDITIONS ]E� FIFE OUTLET PROTECTION
LESS THAN SINCHES. �
Z
E-052
SECTION E-�5 E-072 SECTION E-os9 SECTION d
N.T.B. DETAIL N.T.B. N.T.B. N.T.B.
VSMP Plan: Erosion co
lu
Control Details
OF 17 &
a
0 15 30' 60' 120'
PROPERTY BOUNDARY s� \
..-... / '' % / �\ -- / � _ _ � _yam--�,-- ✓--' \
/ I• , / / 9F(OPERTY BOUNDARY-'
/ CHXRL 1`TESVILLE
/Z W_:ALT & REHAB
PRE DEVELOPMENT AREA B
D.A. = 4.51 AC ` PRE-DEV LOPME
�' / DRAINA E DIVIDE, P. / / /
Tc — 11.90 MIN ��� , _�� . �\ ' 1 � � �-� � 7-'. '
/
Q2{pre}= 2.28 CFS
Q10 (pre) = 8.84 CFS
PRE Dr_VELOPMEi T /
�� / / •`1 / '' /\~' --' '" � ` 1 / Tc P TH, TYP.L\� \
P =--DEVELOPMENT
c PATH, TYP, 1 I l
I PRE DEVELOPMENT AREA A !
D.A. = 4.31 AC
D � a � �=- \- � CN _ 60
1 ti ►I
Tc = 13.30 MIN 11
Q2(pre) = 2.57 CFS ! ! [
Q10 (pre) = 8.90 CFS 1 •� II
77 II
PROPERTY BOUNDAR�
I I
I BERKLEY I
ti
0
5Ei4 %
- .
BERKMAR CROSSING II , I1 II
I ll �
1-1► — 1
Edwards designStudlo, PLLC
Landscape Architecture and Site
Planning
4936 Old Boonsboro Road
Lynchburg, VA 24503
teiel 434.531.7507
el steve@edwardsdesignstudio.com
www.edwardsdeslgnstudlo.com
ALAN G. FRANKLIN, P.E. LLC
Civil and Site Planning Engineering
427 Cranberry Lane, Crozet, VA 22932
teiel 434.531.5544
el aian@aianfranklinpe.com
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Lic. No. 35326
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-- 03.26.18 AMENDMENT 1 APP.
1. 12.28.18, AMENDMENT 2 Z
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— �- POST DEVELOPMENT RUNOFF AT POINT OF
60' 120' / ANALYSIS FOR AREA B
A. = 5.36 Acres (modeled as 3 sub areas in Hydrooad) (-.01 ) /
�
Dev. Area to Bio-Filter Basin = 4.83 + .11 Acres 2
--'"'..; �' - POST DEV. B ` ?t \ \
% (Includes 1.62 Acres of Permeable Pavement) / \
DRAINAGE AREA
( � \ / `\ - - - ° °A. DEVELOPED AREA
ev. Area w/o SWM - 0.53 (-.12) Acres (6S) - Shown as hatch _ - ,�, _ / LIMITS, TYP.
CN - see SW Model Printout - ( ) \
Tc 5.00 mins. f _ _ r �`�'.a-° <�° - ' ��� -� -- � \•\ \
- \
Q2(post) - 1.66 cfs < Q2(pre) = 2.28 cfs -0.10 - .' a �'. F, ` POST DEV. A \ \ \
( ) ✓� p ° i, a , ; ; DRAINAGE AREA 6
_ - - " r; ( _ LIMITS, TYP.
f Q10(post) 7.29 CfS < Q10(pre) - 8.84 cfs (-0.48)I /' $ '� - BIO RETENT Q N
SUB -WATERS
HED / �--✓�' �T �' �i1 ...
' , / - /� f ,.� • b DRAINAGE AREA
\ \ LIMITS,TYP { '
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ARTIVIE
DRAINAGE AREA � �;,..> �- -� --� ..•^, �."\— � T--
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QRAINAGE AREA
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"`-,. .. � Y. - .,- ^r - a+-....� .::_. .:: � .r-' \ s-�-i�,-'.- -. _4 ^-.x�Rr,-'1'!"5- ,[•., �t 7".., -r' �� - - >t `^�- +b,�. .�y;;`".�a. ...1 J- -- / \ -
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Woods/Grass Combo Area 0.25 Acre
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=� � - - -� - -� - ems' � �.-�a�,?�-� "'�i : t � .,,,,--�"`< '� . �;fi'�''•S�''r" . '(`�'� ?� .1 .r• i . "a,�r�= }- . i •. %C"%- � ��- �r - _- ^ / /
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. .\ ����'T_.`" rPre:t'7` �/`�+.- 'F--.. ,'. .\ <°��¢s;m• fir. . €rxnr+�= --�'1 l T 11 i.�..Ssr Y._}, Yrr -- r: '�,�.,uyw r / _ _ - Ins.
Q`` \ '�•.. .- -: 1 - ,��.. __--x".-.� `.l / I ��, �0 . j'r=-"C i (.,
DRAINAGE AREA —POST DEV ATo —�� r;— J , /�/ 1f 1 / T�
'LIMITS TYP. A2
/ / —' — ___ --- -- -- --- / /
�' / //�— -- — —DRAKE-AREA—
POST,QEV. B LIMITS; TYP: ; _560
DRAINAGE AREA
LIMITS, TYP.
560
f l POST DEVELOPMENT RUNOFF AT POINT OF
ANALYSIS FOR AREA A
D.A. � 3.93 Acres (modeled as 4 sub areas in Hydrocad) (+.04 + 0.34)
I Dev. Area to 60" HDPE = 3.19 Acres (2S) & (3S*) & (14S) (+.04 + 0.30) -�
I *Includes 0.84 Acres of Permeable Paver Area (+.07)
l Dev. Area w/o SWM = 0.64 Acres (6S) - Shown as hatch /
l CN = see SW Model Printout
Tc = 5.00 mins.
t� �1
Q2(post) = 2.55 cfs < Q2(pre) = 2.57 cfs
Q10(post) = 8.76 cfs < Q10(pre) = 8.90 cfs
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Edwards deslgnStudio, PLLC
Landscape Architecture and Site
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4936 Old Boonsboro Road
Lynchburg, VA 24503
telel 434.531.7607
el steve@edwardsdesignstudio.com
www.edwardsdeslgnstudlo.com
ALAN G. FRANKLIN, P.E. LLC
Civil and Site Planning Engineering
427 Cranberry Lane, Crozet, VA 22932
telel 434.531.5544
el alan@alanfrankiinpe.com
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Landscape Architecture and Site
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4936 Old Boonsboro Road
Lynchburg, VA 24503
telel 434.531.7507
el Steve@edwardsdesignstudio.com
www.edwardsdesignstudio.com
ALAN G. FRANKLIN, P.E. LLC
Civil and Site Planning Engineering
427 Cranberry Lane, Crozet, VA 22932
teiel 434.531.5544
el alan@alanfranklinpe.com
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SCALE: 1" = 30' v
ISSUED: 17 DEC. 2018 o
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*60 HDPE PERFORATED HDPE ALLOWED TORMFO
SILTER ALBEMARLE COUNTYGENERAL CONSTRUCTION NOTES FOR STORMWATER MANAGEMENT PLANS:
TORMF
a. • : ; ._ •.: 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.
1.4
♦ STRUCTURE SHALL BE CONSTRUCTED 2. PIPE AND RISER JOINTS ARE TO BE WATERTIGHT WITHIN STORMWATER MANAGEMENT FACILITIES.
REINFORCED CONCRETE FROM SIGNED AND SEALED DOCUMENTS 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 COUNTY EROSION CONTROL
BAFFLE WALL SECURED PRODUCED BY A LICENSED STRUCTURAL INSPECTOR.
a. < TO STRUCTURE WALLS
' ENGINEER
'a
6'-6" 6 „ P P.P
4A,
15"HDPE PPE
E 0
Da
VDOT STD.
EXPANDED STEEL MESH (FLATTENED) SHALL HAVE
;; •
ST-1 STEPS
, d.
OPENINGS OF APPROX. 1/2 "X 1" AND WEIGH
_
APPROX. 0.82 LBS. PER SQ. FT. MESH SHALL BE
°
GALVANIZED IN ACCORDANCE WITH ASTM A-123.
THE MESH SHALL EXTEND A MINIMUM OF 1"
.
BEYOND ORIFICE, AND IS A BARRIER FOR
°
.�
RODENTS, ETC. THE SLOT FOR THE STEEL MESH IS
' • `. •:. • .:.' .
. a�'
TO BE CONSTRUCTED SO THAT THE MESH CAN BE
"
"
REMOVED FOR CLEANOUT PURPOSES.
PLAN
REINFORCED CONCRETE
MANHOLE RISER ACCESS MANHOLE RISER ACCESS
BAFFLE WALL SECURED
RIM ELEV. 551.63 RIM ELEV. 551.63
TO STRUCTURE WALLS
TW = 548.20
' a' •p- • ♦'• •a
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WEIR ELEV. 548.20
a♦
10-YR ELEV. 548.15
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" '
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60" CMP PIPE
•
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(PERFORATED)
25"(W) x 4"(H) ORIFICE
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6'-6"
INV.546.35
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2-YR ELEV. 546.
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TO STORMFILTER
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INV. 543.20 (C
,q SWM A - OUTLET STRUCTURE A4
13 SCALE: N.T.S.
1\13 DETAIL ID-000
N.T.S.
560
555
550
545
540
535
CONTECH
CMP
6.5' x
PRECAST 0
TLET
ACCESS)
MANHOLE
CONTEC
H CMP
CON
ROL STRUCT
RE W1
W/ VDOTSTD
S -
T1
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W/ VDOT S
D. STA,
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18" MIN.
OVER
24" HDPE @ 1.00%
EXTEND #57 "4
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If
it rir
= 10' V: 1" _
MIN. 12" OF 1
STONE PIPE
BEDDING
EXTEND #57
MIN. ABOVE
SYSTEM
20 LF 60" CM
HEADER PIP
(3) - 100 LF RUNS OF 60" PERFORATED
20LF 60" CMP
HEMER PIPE
INSTALL PER PIPE MANUFACTURER INSTALLATION INSTRUCTIONIS/SPECIFICATIONS
ATER DETEN-
a G G
1
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M1
555
550
.�
535
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A
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HEADER PIPE
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D-B2
OT S.T D 13..(4' 11HRO 8'x6' STORMFII.TER VAULT /
'3"0 - � � 10 CARTRI GES, OR'�QUA �
CCE S MANHOLE I ��
VD T STD_ST-1
B2
- 6 LF OF 15" HDPE 0 1.0% ~-0
tz•,o. )
ALT R TEPIP E NA E
TOP SLAB.ACCESS
LOCATION (Tl(F).
SEE FRAME AND.COVER
DETAIL
Q.
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INLET
INLET
I
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D.ISSIPATOR:
A.
STORMFILTER.
6": CQNGRE .E WALL
CARTRIDGE.
:WIDTH MAY.VARY
REGIONALLY
CONTRACTOR TO GROUT TO.
FINISHED GRADE
GCE
RING/RI.S.ERS
INLET PIP
INLET:
DI-5S.IPATOR
.SECTIU'V B-B
VAULT .$TYLF.: OUTLETSUMP (NIBS)
FLOW Klr
SEC119N. A -A
.'The Smm{wter Menaya�,
St6r.m.Fllter'
w.m,a"�•"'nc cra-aa uuasnuw�c•'a�R 1R.�
D CONTECH WATER QUALITY UNIT, OR EQUAL
13%
W
A, u,w, f"IkA6 OIOG T/O
A
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2' MIN.
STORNIFILTER QESIGN. DOTES
Q MF 7 TEAT ENT CAP CI IS FUN ON 0 H ARTRID SELF TION A D TH :NUMBE F. , ID .. THE ST NDARD VA LT ST . R IL .ER R . .M A TY. A CTl F T, E G, . GE G. N E ..., .. R D G.ES. A.. U...
LEIS STY. E MAXI:MUM NUMBER OF. TRIDGES.(12) V AUCT STLE OPTION I CLU0 .OUTLETB Q) ST RS OWN ITH TH. Y MFILTER6 PEAK:.
HYDRAULIC CAPACITYIS 18CFSF THE SITECONDITIQNS EXCEED I ACFS ARLIPSTREAM BYPASS STRUCTURE :IS REQUIRED
:,CAR7RlDG;:SELECTION
CARTRIDGE HEIGHT ..
27"
LOW DROP
RECOMMENDED HYDRAULIC PROP(H)
3.05'
SPECIFIC FLOW RATE (gpm/O ...... ........
.2 gprn/K.
1 67" gprNsf
...1 goWsf. .
.2:gp60.
1.07 gpm/af
. 1 gpiri/sf
2 gprNaf
1.67" gpiNsf
1 gpmisf..
CARTRIDGE FLOW: RATE (gpm)
22:5
18.79
11.25
15
10:
8;35
5
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FRAME. -AND- COVER
(DIAMETER -VARIES)
N:T:S:
:SITE SPECIFIC.. .
DATA REQUIREMENTS:
STRUCTURE ID...
WATER QUALI.TY.FLOW.RATE ffs).
PEAK .FLO.W RATE (ds)
"
RETURN PERIOD:OF PEAKF4*oW (Yrs)
"
CARTRIOGE.HEIGHT 2T,1$."; LOW DROP LU
NUMBER.OF CARTRIDGES. REQUIRED
CARTRIDGE FLOW. RATE:
" ... .
MEDIA TYPE: PERLITE;:ZP.G, PSORB
`
PIPE.ukk
I.E:
I MATERIAL I
:DIAMETER
INLET PIPE#.1:
'
INLET OPE42.
OtTTLETPIPE
UPSTREAM RIM ELEVATION
"
DOWNSTREAM RIME EVATION... .
A.NTI-FLQTATION$ALLAST
WIDTH.
I HEIGHT
*
N
NOTES/SPECIAL REQUIREMENTS:
*;PER ENGINEFR% QF RECORD
GENERAL NOTES
1,.CON TEGHTO:PR0.V1PI=.ALL.MATER.IAO..O. K. :NO TED.OTHERW)SE:..
2 DIMENSIONS. MARKED: WITR O ARE REFERENCE D,IMEN510NS..:,A UAL DIMENSIONS M..AY VARY..
3 F0R.SITE SPECIFIC DRAWINGS WITH DETAILED.
VAULT DIMENSIONS AND:WEIGHTS, PLEASE CONTACT YOUR.CONTECH ENGINEERED SOLUTIONS
LLC REPRESENTAl IYE www:CoirtecpES
4. $TORMFILTER DRAS!UINWATER'QUALITY STRUCTURE SHALL BE IN:ACCORDANCE. WITH ALL DESIGN DATA AND INFORMATION CONTAIN Eq.IN.THIS
G,
5 STRUCTURE. SHALL MEET AASHTO HS20. LOAD.RATING, ASSUMING EARTH COVER OF 0` - 5 AND.:GROUNDWATER ELEVATION , OR IELOW,.TNE
P I VERT EL TI E I EER F P FIRM ACTUAL: . R N T R ELEVATION, TIN SHALL MEET
SHTQ Ol1T .7 Pl E N EVq ON NG. N Q RECOR . TO CON G OU .DWA E .. E 0 ., CASTINGS
SHA M. Aq
M3Q6. AN BE CAST WITH THE CONTECIi LOGO:.
6 FILTER CARTRIDGES SHALL BE MEDIA -FILLED; PASSIVE, SIPHON ACTl1ATED RADIAL FLOW, AND:SEI F CL EANING.:RADIAL MEDIA:DEPTH:SHALL.
BE 7-INCHES;. FILTER MEDIA CONTACT TIME SHALL SEAT LEAST 36SECONDS
E E CAP CI m VIDED BY.T FI E C NT CT U FACEAREA
7 :SPECIFIC FLEW RATE.:IS Et�UAL TO THE FILTER TR ATM NT .... A TY. (gp } DI .. HE . LT R . 0 ... A S _ R . (sq ft).
B UTQRMFILTE13STRUCTURE SHALL BE. PRECAST CONFORMING TQ ASTM.C-657 AND AASHTO LOAD FACTO..R DESIGN. METHOD.
INSTALLATION NOTES:
O O S S ARE SP IF SIGN I ERA IO SAND C B A' ANY SUB BASE+BACKFILL.DEPTH;:AM4/ORANTI FLOTATI ,N PR VI ION, .AR, I, E EC, , IC .E. CONS Q . T.. N .. AND $HA. L BE
SPECIFIED BY ENGINEER OF RECORD.
B. CONTRACTOR TO PROVIDE EQUIPMENT WITH SUFFICIENT LIFTING AND REACH. CAPACITY TO LIFT AND SET THE STORMFILTER VAULT (LIFTING
CLUTCHES PROVIDED).
C• CONTRACTOR TO INSTALL JOINT SEALANT BETWEEN ALL VAULT SECTIONS AND ASSEMBLE:VAULT.
D. CONTRACTOR TO PROVIDE, INSTALL, AND GROUT PIPES. MATCH OUTLET PIPE INVERT WITH OUTLET BAY FLOOR:
E.:CONTRACTOR TO TAKE APPROPRIATE MEASURES TO PROTECT CARTRIDGES FROM CONSTRUCTION -RELATED EROSION RUNOFF:
Edwards designStudlo, PLLC
Landscape Architecture and Site
Planning
4936 Old Boonsboro Road
Lynchburg, VA 24503
telel 434.531.7507
el steve@edwardsdesignstudio.com
www.edwardsdeslgnstudlo.com
ALAN G, FRANKLIN, P.E. LLC
Civil and Site Planning Engineering
427 Cranberry Lane, Crozet, VA22932
telel 434.531.5544
el alan@alanfranklinpe.com
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Details
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B 6011 CMP PIPE STORMWATER DETENTION UNIT E CMP DETENTION
1 SCALE: 1" = 10' 13 SECTION DETAIL ID -OW
RJANK WITH #57 GRAVEL BACKFILL INSTALLED
/ UNDER BIO-RETENTION BASIN FOR ADDITINAL
SW -STORAGE
/ (623 TRIPLE + MINI UNITS)
LAYOUT MAY VARY SLIGHTLY AS LONG AS A MINIMUM
OF 9,658 CF OF STORAGE IS PROVIDED.
R-TANK TO BE INSTALLED PER MANUFACTURER
SPECIFICATIONS WITH MANUFACTURER'S
REPRESENTATIVE PRESENT
48"0 REINFORCED CONCRETE
/ BIO-RETENTION OVERFLOW/
/ RISER W/ TRASH RACK
(SEE DETAIL) tom_
/ RIM 570.00 /
/ INV. OUT 560.0�-(R-TANK)
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/ SWM/MAINTENjN
/ EASEMEN.T•; TYP
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(SEE SITE PLAN) INV. OUT 571.50
A BIO—RETENTION BASIN PLAN VIEW
1 A % SCALE: 1" = 10'
CONCRETE BASE �.:_i' n. I —%J , v . I CONCRETE BASE
IN
ALBEMARLE COUNTY ENGINEERING GENERAL CONSTRUCTION
NOTES FOR STORMWATER MANAGEMENT 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 COUNTY EROSION CONTROL INSPECTOR.
BIO-FILTER #1 PLANT LIST:
ILabel
ScientificName
aCommonName
Quantity
I Caliper
Heights Root
lComments i
JCL
CP
I�CS
Calycanthus floridus'Diana'
phalanthus occidentalis
ICornus serlcea
Diana Common Sweatshru��+v b
Buttonbush
Red-osler Dogwood
24
8 _
9
t
1
I 3 G
3 G
� G
r 3
Dense form; healthy color; uniform branching; 4' O.C.
Dense forrn healthy color; uniform branching; T O.C.
jDe nse forrn healthy color; uniform branching; T O.C.
� MT
i Metasequoia glyptostroboides
Daw n Redw ood
3
2 2.5" �i�~
_ i B&B
Straight trunk; branching begins at 3'; balanced head
S1 __.
Seed �._
Seed
3,000
I seed (s f.)
F Earnst Basin Mix
w _
1. FOR GENERAL PLANTING NOTES SEE SHEETS TITLED LANDSCAPE PLAN AND LANDSCAPE DETAILS.
ESTABLISH VEGETATED
BASIN BOTTOM AREA WITH
ERNST RETENTION BASIN
FLOOR SEED MIX COVERED
WITH STAW MAT
\/
COMPACTED FILL
\
NVI
\ \ \
\ \ \ \ \
BIO-FILTER BOTTOM
>`~
WRAP TANK ACF
M -2 0 ONOFILAMENT
M 0
FABRIC
8 OZ NON -WOVEN
GEOTEXTILE FABRIC \
2' MIN.
#57 STONE
AROUND
PERIMETER OF
TANK
VV19V1\L 1 L
BASE
E BIO—RETENTION BASIN RISER
p BIO—RETENTION
14 SCALE: N.T.S.
COMPACTED SUB�RADE
BIO-MIEDIA MIX SPECIFICATION
. 85% - 88% SAND
8%-12%SOIL FINES
3% - 5% ORGANIC MATTER IN THE FORM OF
LEAF COMPOST
THE VOLUME OF FILTER MEDIA BASED ON
110% OF THE PLAN VOLUME TO ACCOUNT
FOR SETTLING OR COMPACTION
30' OF BIO-MEDIA MIX
2' OF # 6 STONE
CHOKER LAYER
10' OF #57 STONE
(THOU ROUGHLY WASHED)
R-TANK MINI
59.08"
R-TANKTRIPLE I
SIN SECTION
TO WR-12 PROVIDE MINIMUM OF 1' OF
FREEBOARD FROM DI TOP TO RAMP SOIL LAYER UP TO
TOP OF BERM. STRUCTURE MUST LIP OF STRUCTURE OR
PASS 10-YEAR STORM WITHOUT PROVIDE STONE PROTECTION
OVERTOPPING BERM AROUND STRUCTURE
TRASH RACK
SEE NOTE
UP TO 1'
t
MIN.
NOTE:
AS AN ALTERNATIVE TO THE TRASH RACK, AN OVERFLOW
STRUCTURE MAY BE A DROP INLET WITH A BAR GRATE.
BIOFILTER OVERFLOW STRUCTURES
SECTION
D-00s
N.T.S.
Edwards designStudlo, PLLC
Landscape Architecture and Site
Planning
4936 Old Boonsboro Road
Lynchburg, VA 24503
WWI 434.531.7507
el steve@edwardsdesignstudio.com
www.edwardsdeslgnstudio.com
ALAN G. FRANKLIN, P.E. LLC
Civil and Site Planning Engineering
427 Cranberry Lane, Crozet, VA 22932
teiel 434.531.55"
el alan@aianfranklinpe.com
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MATERIAL
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MATERIAL
FOUNDATION DF T; YIELO. NG, O.R.
NORMAL .EARTH FOUNDATION
ROCK. F.QUND.ATION
gT.HERW.ISE UNSUITABLE MATERIAL
H ACCORDANCE WIGS EMBANKMENT
SE.CTIgN. 302 OF THE ROAD AND BRIDGE NC)TES.%
SECTION.
SPECIFICATIONS. FOR G.ENERAI- NO:TES.ON FIPE;BEDRING;
CLASS T BACKFILL MATERIAL IN ACCORDANCE 5U: INSTALLATION OF PIPE. CULVERTS
WITH. SECTION THE ROAD AND AND. STORM SEWERS GENERAL NOTES
�02. OF .BRIDGE
SPECIFICATIONS, ON SHEET 1.Q7:Q0.;
T I IN. ` DAN E L B CKFILL MA E AL ACCOR C • REUAR A R C..
'BRIDGE
WITH TI F THE ROAD ANDI
FOR P.LAS?IC PIPE:,.CLA$S.Z..BACKFICL MATERIAL. ,. C•'•�:::1 W! SEC ON 302 .0 AN CRUSHED GLASS CONFORMING, TO THE
rrrrr IN SPECIFICATIONS. FOR
..ACCOR.D.ANCE. WITH SECTION 302 OF THE .RM SIZE REQUIREMENTS. CRUSHER .RUN
AND BRIDGE SPECIFICATIONS. AG.GREGATE'. SIZE. 25.: AND. 26 MAY . BE.
USED IN PLACE .OF 'CLASS I .QACKFILL.
FOR 'Al L .OTHER• PIPE REGULAR BACKFILL. MATERIAL
rlrrr.. IN :ACCORDANCE WITH. SECTION 1302 :OF THE ROAD
AND BRIDGE SPECIFICATIONS:
'`V CUDT
INSTALL. OF PIPE GIJLVE.RTS STORM SEWERS
SPECIFICATION
REFERENCE
ROAD .AND BRIDGE STANDARDS
:AND
C:IRC. PIPE BEDDING SAND BACK:FI:L:L - METHOD "A''
.3q'
SHEET 1 OF 4
REVISION DATE
07/12
VIRGINIA DEPARTMENT :OF TRANSPORTATION
303
107.01
2016 ROAD &:BRID.GE STANDARDS
540
530
520
510
500
COMPACTED
SUBGRADE
C
15
SECTION
TYPICAL BIO-FILTER LANDSCAPING
- SEE PLAN
CREATE 1' TALL BERM WITH CLASS 1 OR LARGER RIP
RAP/STONE - SEE PLAN FOR LIMITS
(BROWN RIVERSTONE APPEARANCE PREFERRED)
LINE FOREBAY LIMITS WITH VDOT
CLASS Al RIP RAP, 6" MIN. DEPTH
(BROWN RIVER T NE APPEARANCE PREFERRED)
- SEE THE PLAN FOR LIMITS A
B10-RETENTION BASIN FOREBAY
TYPICAL DETAIL
ASPHALT/CONCRETE
PAVING SECTION
FLUSH CURB/EDGE
RESTRAINT
\%\%\%\%\%\%\% L- COMPACTED
SUBGRADE
VDOT 21A
SECTION ABUTTING PAVING GRAVEL
BASE
PERMEABLE INTERLOCKING PAVERS
SECTION
1 /2" PAM-9.5 POROUS
ASPHALT SURFACE
2 y" PAM-19 POROUS
ASPHALT BASE
1" NO.8 AGGF
COMPACTED
4" NO.57 ST
COMPACTEI
8" NO. 3 S1
COMPACT
COMPACTED
SUBGRADE
ASPHALT/CONCRETE
PAVING SECTION
CLASS A3 CONCRETE
FLUSH CURB/EDGE
RESTRAINT
TIC Tn !• c"KIG GRADE
N.T.S.
IEel
d FABRIC, TYP.
DOT CLASS 1 RIP RAP
' MINIMUM DEPTH)
N FILTER FABRIC
EXTEND CLASS Al RIP RAP
TO CURB CUTS OR PIPE
OUTLETS, TYP.
TYPICAL 610-FILTER
SECTION
�- COMPACTED SUBGRADE
6" PERFORATED SDR-35
UNDERDRAIN SECTION ABUTTING CURB
(TIE TO STORM DRAINS)
►��:tl:�r�!
VDOT 21A
GRAVEL BASE
FILTER FABRIC
COMPACTED [�\!
SUBGRADE LY-4
VDOT 21A 6" PERFORATED SDR-35
SECTION ABUTTING PAVING GRAVEL UNDERDTIE TO STORM DRAMS
IN
BASE { )
PERMEABLE ASPHALT - ALTERNATIVE TO PCIP
VDOT STD CG-6
1 Y" PAM-9.5 POROUS
ASPHALT SURFACE
2 i/2" PAM-19 POROUS
SLOPE ASPHALT BASE
1" NO.8 AGGREGATE
COMPACTED
4" NO. 57 STONE
COMPACTED
8" NO.3 STONE
COMPACTED
COMPACTED SUBGRADE
SECTION ABUTTING CURB
NOTES:
INTERLOCKING PAVERS TO BE EAGLE BAY SWM
PAVE AQUA-BRIC 4 "L" PERMEABLE PAVER LAID
MECHANICALLY INSIDE 80MM PERIMETER SOLDIER
COURSE
CONTRACTOR TO VERIFY AND INSTALL AS
SPECIFIED BY MANUFACTOR/SUPPLIER TO ENSURE
ALL WARRANTIES
EXPANSION JOINTS SHALL BE EVERY 20' MAX.
CONSTRUCTION JOINTS SHALL BE EVERY 10' MAX.
PAVER COLOR TO BE DETERMINED BY OWNER AT
THE TIME OF ORDER.
P-050
NTS
NOTES:
1. REFERENCE STORMWATER MANAGEMENT HANDBOOK,
FIRST EDITION, 1999, VOLUME I, MINIMUM STD 3.10D,
POROUS PAVEMENT FOR DESIGN, INSTALLATION,
INSPECTION, AND MAINTENANCE REQUIREMENTS.
2. CONTRACTOR TO VERIFY AND INSTALL AS SPECIFIED BY
MANUFACTOR/SUPPLIER TO ENSURE ALL WARRANTIES,
81. Bio-Retention Construction Sequence
Construction Stage E, &S C011trols. Micro-bioretention and small-scale' bioretention areas should
be filly protected by silt fence or construction fencing, particularly if they will rely on
infiltration (i.e., have no underdrains). Ideally, bioretention should remain outside the limit of
disturbance during construction to prevent soil compaction by heavy equipment. Bioretention
basin locations may be used as small sediment traps or basins during construction. flowever,
these must be accompanied by notes and graphic details on the E&S plan specifying that (1) the
maximum excavation depth at the construction stage must be at least 1 foot above the post -
construction installation, and (2) the facility must contain an underdrain.' The plan must also
show the proper procedures for converting the temporary sediment control practice to a
permanent bioretention facility, inclitcing ciewatering, cleanout and stabilization.
8.2 B! 'retention Installation
'the following is a typical construction sequence to properly install a bioretention basin (also see
Figure 9.16). The construction sequence for micro-bioretention is more simplified. These steps
may be modified to reflect different bioretention applications or expected site conditions:
Step 1. Construction of the bioretention area may only begii 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 should be checked
for existing utilities: prior to any excavation.
Step 2. The designer and the installer should have a preconstruction meeting, checking the
boundaries of the contributing drainage area and the actual inlet elevations to ensure they
conform to original design. Since other contractors may be responsible for constructing portions
of the 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.
area. The designer should clearly communicate, in writing, any project changes determined.
during the preconstruction meeting to the installer and the plan review/inspection authority.
Step 3. Temporary E&S controls are needed during construction of the bioretention area to divert
stormwater away from the bioretention area until it is completed. Special protection measures
such as erosion control fabrics may be needed to protect vulnerable side slopes from erosion
during the construction process.
Step 4. Any pre-treatment ',cells should be excavated first and then sealed to trap sediments.
Step 5. Excavators or .backhoes should work from the sides to excavate the bioretention area to
its appropriate design depth and dimensions. Excavating equipment should have scoops with
adequate reach so they do not have to sit inside the footprint of the bioretention area. Contractors
should use a cell construction approach in larger bioretention basins, whereby the basin is split
into 500 to 1,000`sq. ft. temporary cells with a 10-15 foot earth bridge in between, so that cells
can be. excavated from the side.
Step G. It may be necessary to rip the bottom soils to a depth of 6 to 12 inches to promote greater
infiltration.
,Ste-) 7 Place eo xt' fabric the side the bioretention area with a 6-inch overlap on the
1 h ce gto ile f ri on s of r n e i p h
sides. If a stone storage layer will be used, place the appropriate depth of 957 stone on the
bottom, install the perforated underdrain'Pipe,,pack {#57 stone to 3 inches above the underdrain
pipe, and acid approximately 3 inches of choker stone/pea gravel as 'a filter between the
underdrain and the soil media layer. If no stone storage layer is used, start with 6 inches of57
stone on the bottom, and proceed with the layering as described above.
Step 8. Deliver the soil media from an approved vendor, and store it on an adjacent impervious
area or plastic sheeting. Apply the media in 12-inch lifts until the desired top elevation of the
bioretention area is achieved. Wait few days to check for settlement, and add additional media,
as needed, to achie�ie the design elevation.
}Wep 9 Prepare planting holes for ariy trees and shrubs, install the vegetation, grid water
accordingly. Install any temporary irrigation.
Wep 10. Place the Surface cover in bath cells (rnulch river stone Dr turf), depending on (lie
design. If coin oraute matting will be used in lieu of rliirlckr> the mattingwillneed to be installed
prior top lanting (Step 9), and holes or slits will have to be cut in the matting to install the plants.
Step IL Install the pliant materials 1s shown in the landscaping plan, and wetter them during
weeks of no rain for the first`two months.
Step -12. Conduct the final construction inspection (see Section 9.2 ). Then log the Cips
coordinates for each bioretention facility and submit thern for entry into the local maintenance
tracking database.
Suggested Annual Maintenance Activities for Bioretention and Dr 'Swale
9g Y
• Mowinq of rass filter, strips and bioretention tuff cover < 4 times a year
S ot.weedin , 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 Once every, 2 to 3 years
Replace, the mulch layer Every 3 years`
Bio-Retention and .Dry Swale Maintenance Inspections
It is highly recommended that a spring maintenance inspection and cleanup be conducted at each
bioretention area. The following is a list of some of the key maintenance problems to look for:.
• Check to see if 75% to 90% cover (mulch plus vegetative cover) has-been achieved in the
bed; and measure the depth of the remaining mulch.
• Check for sediment buildup at curb cuts, gravel diaphragms or pavement edges that prevents
flow from getting into the bed, and check for other signs of bypassing.
• Check for any winter- or salt -killed vegetation, and replace it with hardier species.
• Note presence of accumulated sand, sediment and trash in the pre-treatment cell or filter
beds, and remove it.
• Inspect bioretention side slopes and grass filter strips for evidence of any rill or gully erosion,
and repair it.
• Check the bioretention bed for evidence of mulch flotation, excessive ponding, dead plants or
concentrated flows, and take appropriate remedial action.
• Check inflow points for clogging, and remove any sediment.
• Look for any bare soil or sediment sources in the contributing drainage area, and stabilize
them immediately:
• .'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.
E
15
B10-RETENTION BASIN NOTES
INSTALLATION, INSPECTION, & MAINTENANCE
Edwards designStudlo, PLLC
Landscape Architecture and Site
Planning
4936 Old Boonsboro Road
Lynchburg, VA 24503
telel 434.531.7507
el steve@edwardsdesignstudio.com
www.edwardsdeslgnstudlo.com
ALAN G. FRANKLIN, P.E. LLC
Civil and Site Planning Engineering
427 Cranberry Lane, Crozet, VA 22932
telel 434.531.5544
el alan@alanfranklinpe.com
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05.31.17 WPO APPROVED
a
-- 03.26.18 AMENDMENT 1 APP.
1. 12.28.18, AMENDMENT 2 Z
2. 04.11.19, CO. COMMENTS 0
SHEET:
SECTION
P-050
NTS
SWM Plan: SWM B
Details
c
OF 17'1
Edwards designStudio, PLLC
Landscape Architecture and Site
Planning
4936 Old Boonsboro Road
Lynchburg, VA 24503
TA N'K.
R,=TANK OPERATION, INSPECTION
& MAINTENANCE
Operation
Your ACF R-Tank System has been designed to function in conjunction with the engineered drainage system on your
site, the existing municipal Infrastructure, and/or the existing soils and geography of the receiving watershed. Unless
your- site included certain unique and rare features, the operation of your R-Tank System will be driven by naturally
occurring systems and will function autonomously. However, upholding a proper schedule of Inspection & Maintenance
is critical to ensuring continued functionality and optimum performance of the system.
Inspection
Both the R-Tank and all stormwater pre-treatment features incorporated into your site must be inspected regularly.
Inspection frequency for your system must be determined based on the contributing drainage area, but should never
exceed one year between inspections (six months during the first year of operation).
Inspections may be required more frequently for pre-treatment systems. You should refer to the manufacturer
requirements for the proper Inspection schedule.
With the right equipmentyour inspection and measurements can be accomplished from the surface without physically
entering any confined spaces, If your inspection does require confined space entry, you MUST follow all local/regional
requirements as well as OSHA standards.
R-Tank Systems may incorporate Inspection Ports, Maintenance Ports, and/or adjoining manholes. Each of these
features are easily accessed by removing the lid at the surface. With the cover removed, a visual inspection can be
performed to identify sediment deposits within the structure. Using a flashlight, ALL access points should be examined
to complete a thorough inspection.
Inspection Ports
Usually located centrally in the R-Tank System, these perforated columns are designed to give the user a base -line
sediment depth across the system floor.
Maintenance Ports
Usually located near the inlet and outlet connections, you'll likely find deeper deposits of heavier sediments when
compared to the Inspection Ports.
Manholes
Most systems will include at least two manholes - one at the inlet and another at the outlet. There may be more than
one location where stormwater enters the system, which would result in additional manholes to inspect.
Bear in mind that these manholes often include a sump below the invert of the pipe connecting to the R-Tank.
These sumps are designed to capture sediment before it reaches the R-Tank, and they should be kept clean to
ensure they function properly. However, existence of sediment in the sump does NOT necessarily mean sediment
has accumulated in the R-Tank.
After inspecting the bottom of the structure, use a mirror on a pole (or some other device) to check for sediment
or debris in the pipe connecting to the R-Tank,
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If sediment or debris is observed in any of these structures, you should determine the depth of the
material. This is typically accomplished with a stadia rod, but you should determine the best way to
obtain the measurement.
All observations and measurements should be recorded on an Inspection Log kept on file. We've
included a form you can use at the end of this guideline.
Maiintenance
The R-Tank System should be back -flushed once sediment accumulation has reached 6" or 15% of the
total system height. Use the chart below as a guideline to determine the point at which maintenance
is required on your system.
9.51,
Max Sediment Dept
1.5"
7Double
17"
3,
3�4"
5"
Triple
30"
6"
Quid
67"
6"
Pent
84"
6"
Before any maintenance is performed on your system, he sure to plug the outlet pipe to prevent
contamination of the adjacent systems.
To back -flush the R-Tank, water is pumped into the system through the Maintenance Ports as rapidly
as possible. Water should be pumped into ALL Maintenance Ports. The turbulent action of the water
moving through the R-Tank will suspend sediments which may then be pumped out.
If your system includes an Outlet Structure, this will be the ideal location to pump contaminated
water out of the system, However, removal of back -flush water may be accomplished through the
Maintenance Ports, as well.
For systems with large footprints that would require extensive volumes of water to properly flush
the system, you should consider performing your maintenance within 24 hours of a rain event.
Stoirmwater entering the system will aid in the suspension of sediments and reduce the volume of
water required to properly flush the system.
Once removed, sediment -laden water may be captured for disposal or pumped through a Dirtbar
(if permitted by the locality).
A CXF
LET'S GET IT DONE
2831 Cardwell Road
Richmond, Virginia, 23234
800.448.3636
FAX 804,743,7779
acfenvironmental.com
DisWbuled by:
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Site Name:
Location:
System Owner:
Step -By -Step Inspection & Maintenance Routine
1) Inspection
a. Inspection Port
i. Remove Cap
ii. Use flashlight to detect sediment deposits
ill, If present, measure sediment depth with stadia rod
iv. Record results on Maintenance Log
v. Replace Cap
b. Maintenance Portls
i. Remove Cap
ii. Use flashlight to detect sediment deposits
iii, If present, measure sediment depth with stadia rod
iv. Record results on Maintenance Log
v. Replace Cap
A. Repeat for ALL Maintenance Ports
c. Adjacent Manholes
i. Remove Cover
ii. Use flashlight to detect sediment deposits
iii. If present, measure sediment depth with stadia rod, accounting for depth
of sump (if present)
iv. Inspect pipes connecting to R-Tank
v. Record results on Maintenance Log
vi. Replace Cover
vii. Repeat for ALL Manholes that connect to the R-Tank
2) Maintenance
a. Plug system outlet to prevent discharge of back -flush water
b, Determine best location to pump out back -flush water
c. Remove Cap from Maintenance Port
d. Pump water as rapidly as possible (without over -topping port) into system until at least
ill
of water covers system bottom
e. Replace Cap
f. Repeat at ALL Maintenance Ports
g. Pump out back -flush water to complete back -flushing
h. Vacuum all adjacent structures and any other structures or stormwater pre-treatment
systems that require attention
I. Sediment -laden water may be captured for disposal or pumped through a Dirtbag7m.
J. Replace any remaining Caps or Covers
k. Record the back -flushing event in your Maintenance Log with any relevant specifics
R-Tank Maintenance Lag
Company Responsible
for Maintenance:
Contact:
Phone Numer:
telel 434.531.7507
el steve@edwardsdesignstudio.com
www.edwardsdesignstudio.com
ALAN G. FRANKLIN, P.E. LLC
Civil and Site Planning Engineering
427 Cranberry Lane, Crozet, VA 22932
telel 434.531.5544
el alan@alanfranklinpe.com
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Edwards designStudio, PLLC
Landscape Architecture and Site
Planning
4936 Old Boonsboro Road
Lynchburg, VA 24503
telel 434.531.7507
el steve@edwardsdesignstudio.com
www.edwardsdesignstudio.com
C%//I-
,MTECH'
ENGINEERED SOLUTIONS
L:
8. Remove accumulated sediment from the floor of the
vault and from the forebay. This can most effectively be
accomplished by use of a vacuum truck.
9. Once the sediments are removed, assess the condition of the
vault and the condition of the connectors.
10. Using the vacuum truck boom, crane, or tripod, lower and
install the new cartridges. Once again, take care not to
damage connections.
11,Close and fasten the door.
12.Remove safety equipment.
13. Finally, dispose of the accumulated materials in accordance
with applicable regulations. Make arrangements to return the
used empty cartridges to Contech Engineered Solutions.
Related Maintenance Activities -
Performed on an as -needed basis
StormFilter units are often just one of many structures in a more
comprehensive stormwater drainage and treatment system.
In order for maintenance of the StormFilter to be successful, it
is imperative that all other components be properly maintained.
The maintenance/repair of upstream facilities should be carried
out prior to StorrFilter maintenance activities.
In addition to considering upstream facilities, it is also important
to correct any problems identified in the drainage area. Drainage
area concerns may include: erosion problems, heavy oil loading,
and discharges of inappropriate materials.
StormFilter Inspection and
Maintenance Procedures
The Stormwater Management a
StormFilter-
Material Disposal
The accumulated sediment found in stormwater treatment
and conveyance systems must be handled and disposed of in
accordance with regulatory protocols. It is possible for sediments
to contain measurable concentrations of heavy metals and
organic chemicals (such as pesticides and petroleum products).
Areas with the greatest potential for high pollutant loading
include industrial areas and heavily traveled roads.
Sediments and water must be disposed of in accordance with
all applicable waste disposal regulations. When scheduling
maintenance, consideration must be made for the disposal of
solid and liquid wastes. This typically requires coordination with
a local landfill for solid waste disposal. For liquid waste disposal
a number of options are available including a municipal vacuum
truck decant facility, local waste water treatment plant or on -site
treatment and discharge.
5
Maintenance Guidelines
The primary purpose of the Storrnwater Management
StormFilter'," is to filter and prevent pollutants from entering our
waterways. Like any effective filtration system, periodically these
pollutants must be removed to restore the 5tormFilter to its full
efficiency and effectiveness.
Maintenance requirements and frequency are dependent on the
pollutant load characteristics of each site. Maintenance activities
may be required in the event of a chemical spill or due to
excessive sediment loading from site erosion or extreme storms. It
is a good practice to inspect the system after major storm events.
Maintenance Procedures
Although there are many effective maintenance options, we
believe the following procedure to be efficient, using common
equipment and existing maintenance protocols, The following
two-step procedure is recommended::
1. Inspection
Inspection of the vault interior to determine the need for
maintenance.
2. Maintenance
- Cartridge replacement
- Sediment removal
Inspection and Maintenance Timing
At least one scheduled inspection should take place per year with
maintenance following as warranted.
First, an inspection should be done before the winter season.
During the inspection the need for maintenance should be
determined and, if disposal during maintenance will be required,
samples of the accumulated sediments and media should be
obtained.
Second, if warranted, a maintenance (replacement of the filter
cartridges and removal of accumulated sediments) should be
performed during periods of dry weather.
2
In addition to these two activities, it is important to check
the condition of the StormFilter unit after major storms for
potential damage caused by high flows and for High sediment
accumulation that may be caused by localized erosion in the
drainage area. lit may be necessary to adjust the inspection/
maintenance schedule depending on the actual operating
conditions encountered by the system. In general, inspection
activities can be conducted at any time, and maintenance should
occur, if warranted, during dryer months in late summer to early
fall.
Maintenance Frequency
The primary facitor for determining frequency of maintenance for
the StormFilter iis sediment loading.
A properly functioning system will remove solids from water by
trapping particulates in the porous structure of the filter media
inside the cartridges. The flow through the system will naturally
decrease as more and more particulates are trapped. Eventually
the flow through the cartridges will be low enough to require
replacement. It Imay be possible to extend the usable span of the
cartridges by removing sediment from upstream trapping devices
on a routine as -needed basis, in order to prevent material from
being re -suspended and discharged to the StormFilter treatment
system.
The average maintenance lifecycle is approximately 1-5 years.
Site conditions greatly influence maintenance requirements.
StormFilter units located in areas with erosion or active
construction may need to be inspected and maintained more
often than those with fully stabilized surface conditions.
Regulatory requirements or a chemical spill can shift maintenance
timing as well. The maintenance frequency may be adjusted as
additional monitoring information becomes available during the
inspection progrram. Areas that develop known problems should
be inspected more frequently than areas that demonstrate no
problems, particularly after major storms. Ultimately, inspection
and maintenance activities should be scheduled based on the
historic records and characteristics of an individual StormFilter
system or site, It is recommended that the site owner develop
a database to properly manage StormFilter inspection and
maintenance programs.,
Inspection Procedures
The primary goal of an inspection is to assess the condition of
the cartridges relative to the level of visual sediment loading as
it relates to decreased treatment capacity. It may be desirable to
conduct this inspection during a storm to observe the relative
flow through the filter cartridges. If the submerged cartridges
are severely plugged, then typically large amounts of sediments
will be present and very little flow will be discharged from the
drainage pipes. If this is the case, then maintenance is warranted
and the cartridges need to be replaced.
To conduct an inspection:
1. If applicable, set up safety equipment to protect and notify
surrounding vehicle and pedestrian traffic.
2. Visually inspect the external condition of the unit and take
notes concerning defects/problems.
3. Open the access portals to the vault and allow the system
vent.
4. Without entering the vault, visually inspect the inside of the
unit, and note accumulations of liquids and solids.
5. Be sure to record the level of sediment build-up on the floor
of the vault, in the forebay, and on top of the cartridges. If
flow is occurring, note the flow of water per drainage pipe.
Record all observations. Digital pictures are valuable for
historical documentation.
6. Close and fasten the access portals.
7. Remove safety equipment.
8. If appropriate, make notes about the local drainage area
relative to ongoing construction, erosion problems, or high
loading of other materials to the system.
9. Discuss conditions that suggest maintenance and make
decision as to weather or not maintenance is needed.
Maintenance Decision Tree
The need for maintenance is typically based on results of the
inspection. The following Maintenance Decision Tree should be used as
a general guide. (Other factors, such as Regulatory Requirements, may
need to be considered)
1. Sediment loading on the vault floor.
a. If >4" of accumulated sediment, maintenance is
required.
2. Sediment loading on top of the cartridge,
a. If > 1/4" of accumulation, maintenance is required.
3. Submerged cartridges.
a. If >4" of static water above cartridge bottom for more
than 24 hours after end of rain event, maintenance
is required. (Catch basins have standing water in the
cartridge bay.)
4. Plugged media.
a. If pore space between media granules is absent,
maintenance is required.
5. Bypass condition.
a. If inspection is conducted during an average rain fall
event and StormFilter remains in bypass condition
(water over the internal outlet baffle wall or submerged
cartridges), maintenance is required.
6. Hazardous material release.
a. If hazardous material release (automotive fluids or other)
is reported, maintenance is required.
7. Pronounced scum line,
a. If pronounced scum line (say >_ 1/4" thick) is present
above top cap, maintenance is required.
Report
StormFilter
Maintenance
ReportInspection
Date: Personnel:
Date: Personnel:
Location: System Size:
Location: System Size:
System'fype: Vault ❑ Cast-ln-Place ❑
Linear Catch Basin ❑ Manhole ❑ Other ❑
System Type: Vault ❑ Cast -In -Place E.Linear
Catch Basin ❑ Manhole ❑ Other ❑
Sediment Thickness in Forebay:Date:
List Safety Procedures and Equipment Used:
Sediment Depth on Vault Floor:
Structural Damage:
Estimated Flow from Drainage Pipes (if available):
Cartridges Submerged: Yes ❑ No ❑
Depth of Standing Water:
System Observations
StormFilter Maintenance Activities (checkoff if done and give description)
Months in Service:
❑ Trash and Debris Removal:
Oil in Forebay (if present): Yes ❑ No
❑ Minor Structural Repairs:
Sediment Depth in Forebay (if present):
❑ Drainage Area 'Report
Sediment Depth on Vault Floor:
Excessive Oil Loading: Yes ❑
No ❑ Source:
Structural Damage:
SedimentAccumulation on Pavement: Yes ❑
No ❑ source:
Drainage Area Report
Erosion of Landscaped Areas: Yes ❑
No ❑ Source:
Excessive Oil Loading: Yes ❑ No
❑ Source:
Items Needing Further Work:
Sediment Accumulation on Pavement: Yes ❑ No
❑ Source;
owners should contact the local public works department and inquire about how the department disposes of their street waste
Erosion of Landscaped Areas; Yes ❑ No
❑ Source:
residuals.
Other Comments:
Review the condition reports from the previous inspection visits.
StormFilter Cartridge Replacement Maintenance Activities
Remove Trash and Debris: Yes
❑
No
❑
Details:
Replace Cartridges: Yes
❑
No
F7
Details:
Sediment Removed: Yes
❑
No
❑
Details:
Quantity of Sediment Removed (estimate?):
Minor Structural Repairs: Yes
❑
No
❑
Details:
Residuals (debris, sediment) Disposal Methods:
Notes:
i7
Maintenance
To conduct cartridge replacement and sediment removal
maintenance:
1. If applicable, set up safety equipment to protect maintenance
personnel and pedestrians from site hazards.
2. Visually inspect the external condition of the unit and take
notes concerning defects/problems.
3. Open the doors (access portals) to the vault and allow the
system to vent.
4. Without entering the vault, give the inside of the unit,
including components, a general condition inspection.
5. Make notes about the external and internal condition of
the vault. Give particular attention to recording the level of
sediment build-up on the floor of the vault, in the forebay,
and on top of the internal components.
6. Using appropriate equipment offload the replacement
cartridges (up to 150 Ibs, each) and set aside.
7. Remove used cartridges from the vault using one of the
following methods:
Method 1:
A. This activity will require that maintenance personnel enter
the vault to remove the cartridges from the under drain
manifold and place them under the vault opening for
lifting (removal). Disconnect each filter cartridge from the
underdrain connector by rotating counterclockwise 1/4 of
a turn. Roll the loose cartridge, on edge, to a convenient
spot beneath the vault access.
Using appropriate hoisting equipment, attach a cable
from the boom, crane, or tripod to the loose cartridge.
Contact Contech Engineered Solutions for suggested
attachment devices.
B. Remove the used cartridges (up to 250 lbs. each) from the
vault.
4
C 'wNTECHt
ENGINEERED SOLUTIONS
(02016 CONTECH ENGINEERED SOLUTIONS LLC.
800-338-1122
wvvw.ContechES.com
All Rights Reserved. Printed in the USA.
C. Set the used cartridge aside or load onto the hauling
truck.
D. Continue steps a through c until all cartridges have been
removed.
Method 2:
A. This activity will require that maintenance personnel enter
the vault to remove the cartridges from the under drain
manifold and place them under the vault opening for
lifting (removal). Disconnect each filter cartridge from the
underdrain connector by rotating counterclockwise 1/4 of
a turn. Roll the loose cartridge, on edge, to a convenient
spot beneath the vault access.
B. Unscrew the cartridge cap.
C. Remove the cartridge hood and float.
D. At location under structure access, tip the cartridge on its
side.
E. Empty the cartridge onto the vault floor. Reassemble the
empty cartridge.
F. Set the empty, used cartridge aside or load onto the
hauling truck.
G. Continue steps a through a until all cartridges have been
removed.
W PMER LED
Contech Engineered Solutions LLC provides site solutions for the civil engineering industry. Contech`s portfolio includes bridges,
drainage, sanitary sewer, stormwater and earth stabilization products. For information on other Contech division offerings, visit
contech-cpi.com or call 800.338.1122.
Support
- Drawings and specifications are available at www.conteches.com.
• Site -specific design support is available from our engineers.
StormFilter Inspection and Maintenance Procedures W016
NOTHING IN THIS CATALOG SHOULD BE CONSTRUED AS AN EXPRESSED
WARRANTY OR AN IMPLIED WARRANT Y OF MERCHANTABILITY OR FITNESS FOR
AN Y PARTICULAR PURPOSE. SEE THE CONTECH STANDARD CONDITIONS OF
SALE (VIEWABLE AT WWW.CCNTECHES.COM /COS) FOR MORE INFORMATION .
800.338.1122
www.conteches.com
ALAN G. FRANKLIN, P.E. LLC
Civil and Site Planning Engineering
427 Cranberry Lane, Crozet, VA 22932
telel 434.531.5544
el alan@alanfranklinpe.com
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Maintenance Notes
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