HomeMy WebLinkAboutWPO201700023 Plan - VSMP WPO VSMP 2017-05-31411111111110
ALBEMARLE COUNTY, VIRGINIA
0
WPO/VSMP. WP0201700023
EROSION AND SEDIMENT CONTROL/STORMWATER MANAGEMENT PLANS
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 90LBS/1000SF, INCORPORATED INTO THE TOP 4-6 INCHES OF SOIL. FERTILIZER SHALL. BE APPLIED AT 1000LBS/ACRE AND CONSIST OFA 10-20-10 NUTRIENT MIX. PERMANENT
SEEDING SHALL BE APPLIED AT 180LBS/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/1OOSF. 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 DAYS 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 & MININIUM, 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 ASA 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.
LEGEND
W
WATER LINE (EX. / PROP.)
WV® WMO
WATER VALVE/ METER
FHA U
FIRE HYDRANT
YH
YARD HYDRANT
BOA 9
BLOW -OFF ASSEMBLY
SS
SANITARY SEWER LINE (EX. / PROP.)
CO o
CLEANOUT
MH--
MANHOLE
SD-
STORM LINE (EX. / PROP.)
DI D
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.)
PPO
POWER POLE
LP *
LIGHT POLE
GUY d
GUY WIRE
EM=
ELECTRIC METER
T❑
TRANSFORMER
OHT
OVERHEAD COMMUNICATIONS (EX./ PROP.)
UGT
UNDERGROUND COMMUNICATIONS (EX. / PROP.)
PED ❑
UTILITY PEDESTAL
SWM / DWM 016'6
SINGLE/ DOUBLE WATER METER
GV M
GATE VALVE
BOA o
BLOW OFF ASSEMBLY
E
- - - - - -
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-- E-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
VDOT STD. HANDICAP RAMP
HC
HANDICAP PARKING SYMBOL
DIP
DUCTILE IRON PIPE
RCP
REINFORCED CONCRETE PIPE
CMP
CORRUGATED METAL PIPE
PVC
POLYVINYLCHLORIDE 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
CONSTRUCTION SEQUENCE:
STAGE 'A'
EXISTING CONDI"T"IONS NOTE:
PHYSICAL, TOPOGRAPHIC & BOUNDARY: ROBERT LUM, DATED 5/30/03. ADDITIONAL SURVEY WORK PROVIDED BY THOMAS B. LINCOLN
LAND SURVEYORS, DATED 5/31/07 & 11/15/07. EXISTING CONDITIONS AND TOPOGRAPHY VISUALLY VERIFIED BY ALAN FRANKLIN PE,
LLC AND LINCOLN SURVEYING WHILE ON SITE THROUGHOUT FEBRUARY 2017
1. INSTALL CONSTRUCTION ENTRANCE AT EXISTING CURB CUT.
2. INSTALL PERIMETER SILT FENCE AND TREE PROTECTION. CONSULT THE TREE ARBORIST AND/OR
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 SDi 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 AND/OR 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 'B'
11. MAINTAIN PERIMETER CONTROLS FROM STAGE W AS INDICATED ABOVE.
12. BEGIN ROUGH GRADING AND INSTALL RETAINING WALLS AS SHOWN ON STAGE 1131 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 'B'
PLAN. MARK ENDS WITH WITNESS POSTS
16. INSTALL STORM DRAIN PIPING AND INLETS AS SHOWN ON STAGE 'B' 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. REMOVE SEDIMENT BASIN #1 AND ESTABLISH A FLAT, TURFED AREA AT ELEVATION 569.00
29. 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.
30. INSTALL UNDERGROUND SWM FACILITIES & MAKE CONNECTIONS TO STORM D AND STORM A. DO NOT
INITIALIZE STORMWATER QUALITY UNIT UNTIL ALL PAVING IS COMPLETE.
31. ONCE ALL SITE PLAN IMPROVEMENTS ARE INSTALLED AND STABILIZED, REMOVE ALL PERIMETER AND
INTERNAL EROSION CONTROL MEASURES.
ADDITIONAL INFORMATION
32. FLUSH CLEAN COMPLETE STORM SYSTEM PRIOR TO DEMOBILIZING AND FINAL INSPECTION.
33. USE DUST CONTROL AS NECESSARY DURING CONSTRUCTION.
34. DO NOT INSTALL BIO -FILTER MEDIA IN BIO -FILTERS UNTIL SITE HAS BEEN STABILIZED APPROVAL BY COUNTY
INSPECTOR IS REQUIRED.
35. 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.
MULCHING
MU
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.
SOI L DATA:
27B ELI OAK 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
01101*9109*
SHEET 2
EXISTING CONDITIONS
SHEET 3
GRADING PLAN (FROM SITE PLAN)
SHEET 4
EROSION AND SEDIMENT CONTROL PLAN STAGE W
SHEET 5
EROSION AND SEDIMENT CONTROL PLAN STAGE'B'
SHEET 6
EROSION AND SEDIMENT CONTROL PLAN STAGE'C'
SHEET 7
EROSION AND SEDIMENT CONTROL PLAN STAGE'D'
SHEET 8
EROSION AND SEDIMENT CONTROL DETAILS
SHEET 9
EROSION AND SEDIMENT CONTROL DETAILS
SHEEI 10
SWM: PRE -DEVELOPMENT DRAINAGE AREA MAP
SHEET 11
SWM: POST -DEVELOPMENT DRAINAGE AREA MAP
SHEET 12
SWM: WATER QUALITY/BMP AREA MAP
SHEET 13
STORMWATER MANAGEMENT PLAN DETAILS
SHEET 14
STORMWATER MANAGEMENT PLAN DETAILS
SHEET 15
STORMWATER MANAGEMENT PLAN DETAILS
REVISIONS
REV DATE DESCRIPTION SHEETS REVISED
1. 04-23-17 COUNTY ENGINEERING COMMENTS ALL
APPROVALS
PLANNING/ZONING
ENGINEER
BUILDING OFFICIAL
ACSA
VDOT
VICINITY MAP
1"= 300'
APPROVED
by the Albemarle County
Community Development Department
Date f 31�zo�
File-1w.fo7017ov�2
Edwards designStudio, PLLC
Landscape Architecture and Site
Planning
4936 Old Boonsboro Road
Lynchburg, VA 24503
tele) 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
teles 434.531.5544
el alan@alanfranklinpe.com
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\ / _ \ AND TAPER
f 1�� f a ' I ,` \\
- _ / // ♦ `l - j I l - j' " - - �� / , I\ -\ /` \\ fl y t ; \ \\
Ix / 1 a� i \
♦ / 11 B xx / \ % \\� ' PORTION OF EXISTING DRIVEWAY \ � �
,� \ / / / / \ %" I \ . / ', // i\ \---���' �\ \ TO RE AIN OPEN TO SERV�jAS AN / / �y j 3'' \ ` it �',
\ / / % l'~ _ \ \__. ® ; EMER ENCYACCESS ROUTE IF 4 \ ,
` I/
i ♦ / / \ � 1 �; / - / 'I 1>1V1 i -_/ l '/ \f� - ,i \ \ lBA I 11/ I NEEDS / / I f I ' �\ \\ 1 t
ho / /_ T' \ \
\\ . , / f / !! " I x \- - I \ .--C 13 \ / \ \ -� i OPEN P 'STORE ) / / y�,/,? } i 1 t
-' T \,.-
---
\ ,fes-= -A /' �`\ _ / \ti 4 - / - } - `V \_ ` ` ���>\�,, � �' i r / `- _ ' / / /� W- it \'\
11 I
\ I f "' _ --- � --\ \ I r / \ _ \
\\ _ - Z /- s-- -�� ,,� , I 1 � \ \ / fig . _ / \ - \ ) / / / J �S „\ � �� }I
\ _
-1 I / 18 - r �� - q - � 28 -------" ' \ / / / • � 0 , , ,
I 1 vC., I� / --,�s o / I ��
' /( \ / \
I
\\ ` _ ~1 f / �' / i\ - f ` `� 1, i( \ i /-_._\ �� _ PRIOR TO CONSTRUCTION: %
/ �` \= 1 A -� ''�1 \ --- ` �- __ ` __ 1 THE CONTRACTOR SHALL INSTALL TREE PROTECTION FENCING BEFORE j ! \ I� 1
'I \\ \ / / - f -_ / / _\ \
ti / \ �` l `'17A\ �' -_.\`\ I \` l� \ DEMOLITION OF BUILDINGS. i j i
/ Ik ' % � �� \ � J \ `� f' 1 O / ' - �r ` ,\ 2. CONTRACTOR AND ARBORIST SHALL DEVELOP A PLAN FOR REMOVAL OF THE / � \ \ � I ` 1
t \\ I, 1 - -�- �/ ' \ �__ \ \_; / \ 2� �\ TREES NOT BEING PRESERVED ON SITE BEFORE START OF DEMOLITION. / 3Q ELECTRIC \ �►`\ \ ' '+
j \ I �` I 1 Z / ,-- `� /J } .. / //' --- 1 EASEMENT O
/ C11' \ i 11 >, ,- / / \a 3. CONTRACTOR SHALL TRENCH ALONG TREE PROTECTION PERIMETERS TO CUT
j \\ / 1 ' o N f /' / ~ -`- 2 ; - i l _ If �(� / I x ROOTS AS INSTRUCTED BY THE ARBORIST. B. 747 PC. 532 \ " I ,I, , ,
W f f �- ;� �> /, \ - X2 ` /'� ` 4. THE REMOVAL OF TREES WITHIN TREE PROTECTION AREAS / i v � ` I .i � li i I
\\ I _ � / � J/ / /; f / (2A,5A,24B,26,36,37,39,44E) SHALL BE BY SAW AND STUMP GRINDER ORAS / )I
cn / / \ I \ %
1, � i i �, I
t,D / \\ ( � I I 1 / N / f / J/ /yg0 �I 11 2 � I' �" ` � - � �' - -__ 1` � OTHERWISE DIRECTED BY THE ARBORIST. KEEP CHIPS ON SITE FOR USE IN / I J,�'' ® \ ih ii \ ' j ; 'I
/ \ i I ' / !` OVERHEAD AD ELECT IC LINES ND I
\ ' CO I / \' > _ .` \ >_-r, -\ I r' \ TREE PRESERVATION AREAS. / \ •�
\\ I I / / ' tiJ I \ ` I "', '� 1� \� �- A \ I 5. TREE PROTECTION FENCING TO BE INSTALLED BY THE CONTRACTOR AS OTHER SERVICES TO BE PLED i
BREAK FENCE Ap�D I _ _ \ t �"`
I /05- i
\\ I f, REMOVE TREESjAS / / ' / ` __- �` , � \ INDICATED ON THE APPROVED FINAL SITE PLAN. UNDEdGROUND LONG FRONTAGE / \ ` I I , I
I j / I i �f
\\ I NECESSARY T PERMIT / j l 26 - - i \ \\ \ ', I 1 6. TO AVOID DAMAGE OF SURROUNDING CANOPIES, SOME TREES IN WITHIN EXISTING EASEMENT. ANY >� 1 � RW i
\\ I / / THE SEWER EXTENSION, __ J' } ' JJ \ 31 "i /
�� \ / t f \ / � CONSTRUCTION ZONES MAY NEED TO BE BRUSHED OUT BEFORE FELLING AND EXI `TING POLF/PEDESTALS/ETC. / \ Q ` i ` } \ U E 659
___j \ l i I NONEEDED SHALL BE EMOVED 1 RQ
I I f / j J -- - I REMOVAL OF STUMPS WITH HEAVY EQUIPMENT. / / I \\l
� I I / / / _ �� i I--,------------/---'
-_ _- BO SHALL ASSESS TREES FOR HAZARDS AND INTERFERENCE D RING PR ESS / \ Il 11
r�4A _ 7. THE ARBORIST SH L A T ENCS WITH
' / \ �-/ / 24 __ -� 2C ` CONSTRUCTION ACTIVITIES AND PRUNE AS NEEDED. ! I ! ' \T
\ /, I 1 1 1 1 1 i % i / / \ � TBR; ,,. ^�. - - ss I
\ i / / / -\ TYP. " -- 1\ 8. THE ARBORIST SHALL CONDUCT WEEKLY SITE VISITS TO VERIFY COMPLIANCE / / / UP °� L i \
/ OPEN PASTURE � !/ f-- \\ `` / WITH TREE PRESERVATION POLICIES AND TO EVALUATE TREE HEALTH. // j ` I 1 �, I i �,
\\ �` I ' j I % --------_______ \ f _ L \ ` ' / /
\/ \ I I I I I t -
EX. `` / J / ----- y .� \ \ _/ 9. ARBORIST SHALL CONSULT OWNER AS NEEDED FOR ARBORICULTURAL ISSUES / r ® i I i II `1_
f \' / / / : \ f - --- --- I f I1.'�TO
I
ASPHALT / I I I j / \ ` I%<✓ _ \, 11 THROI�GHOUT PROJECT. ( EX. COCRETE SIDEWALK I I
PARKING // ' I I, I I I + f `\ \ �`�� (I \\ � _ � ' 10. FOLLOWING CONSTRUCTION (AS NEEDED AND AUTHORIZED) THE ARBORIST I I TO BE EMOVE FROM THE ____1O ' BE ll
\ I I ! i , ! / \ \ -� 2B i SHALL: I EX. EN RANGE EST T THE / I REMOV LAND II
�� 4B / .33A� i I, I
\ (� I I I i I �/ � f-1 . `_ /� \ _ _ 1 a. FERTILIZE WITH ADDITIONAL MYCORRHIZAE AFTER FINAL GRADING IS FIRST ENTRAN E TO TIDE ` , R PLACEL? II
I r -4 - / > \� I I I
\ K, 1 \ \ � j .�-�___ ' _ -- A COMPLETED. THIS MAY BE DONE IN DIFFERENT AREAS AT DIFFERENT TIMES I GARDEN SPOT ND EAST TO � i � I i 11
\t / j I i II i ! 1 \ J, l _--� ` - / 3 \I----� I IF THE PROJECT IS COMPLETED IN PHASES. I THE PROPER LINE f I � . I I i
\ ��41) \ ;' ^ / I 32A i ' b. PRUNE TREES TO ELIMINATE DEAD, DYING OR INTERFERING BRANCHES. I I / ! l II
\% 't i I f 1 - 8 r \ j c. ARBORIST SHALL INSTALL LIGHTNING PROTECTION IN THOSE TREES 1 I \ I t Ii \ I Ii i1
\ Irl I I j � I ( ' f / � I / f - $ \ DETERMINED BY THE ARBORIST TO WARRANT SUCH PROTECTION. i / ' I'\, I I (1 -.
! \ / �._ \ \ I I 1 i
\ i 1 I I 4 / i 1 � I d. IRRI1GATE IF NECESSARY TO SUPPLEMENT RAINFALL. VDOT DRAIN GE ES¢V1T- \ Ii I it
\ ' i / / / I i 3'8A �\ ! %� 1 M /0 \ I I PRO' . # 063 -002-165. C501 W i'1 1 I; I I `
\, � 1 \ @\ \` - X , 32 ) I / e. ARBORIST SHALL CONDUCT REGULAR INTEGRATED PEST MANAGEMENT I ( J ) I IC II
/ ! ~-- ` I � I -_`tel -\ �� \\ \/' \ ! ` , t \ '-� /\ ��` II % (IPMI) VISITS DURING THE GROWING SEASON FORA PERIOD OF 5 YEARS, TO BE ADJU TED/A$ANDONED /�0: ; } I II , a`
fes, / ' I �' _ v \ -- i ,� STAIRTING UPON THE ISSUANCE OF THE LAST CERTIFICATE OF OCCUPANCY I I O i I I LI.
r I y \ \ ! >� c t / I
/ `\ " / ` 1 ` / ! WITIHIN THE PROJECT TO INSPECT FOR INSECT DISEASE NUTRIENT OR / , I I -- y
11 �,/ I / 40 \- \� - - I , l i I, I ,
i / J I ;I 1 t j �� � _� \ �y� 1 ® ENVIRONMENTAL PROBLEMS. ' EX/: ENT�CE t n " i I '!
/ ' 1 ) I I 'I ! � ( �\ y1 / 5 \ , / t 1 AND CULVERT TO gE /I w I '1, � I
/ I i�Z / I \ / f / Tj1 I ! ! I
/ I i I I i 1 ( ( 3 \ i I \� 3. 7 -�,. ! REMOVE ONCE NEW C7 I I -, I I
// II `` , I I I ` N o / / U P 4 OA 1 590 ,n ,\ �\ •. / / / / 1 ' ? q I 4i I 1 I, I I
/ t / E�ITRAN EIS 1N PLACE
-' I ! -__ <\ �> / / / EXISTING OV RHEAD LI S AND ROLES MAY BE I � \ II Q I -. I
%/ 0 ) % , ,, O ``\ it C TEL F1-6DA' \ / 11 - - ---- _ ` _ / i I
%,/ \, 1 ,,! ( �Q v, / / \ \ J \ 34 \. �'� �I / / USED FOR TEMPORARY ERVICES. ONCE HESE I I I I �\ I
�\ k1iP W/ TRANSF \
/ ` I - f #KB92 / how f RE NO LONGER NEED D THEN THEY ARE TO BE ; ( / wl IM I I
-- `\ / % i
I j \ 36------ /� ` 0 M J /ASSOCIATED EASEOM}IN SOAREA O BENY r I ) / ' lI I � I W I i`
I I ,I ; i I, I � / �1, `\ / E �; ' i l l /ABANDOKDED / ! I % II ' ' \" I I' {
/ ,+ / f 1 / I I I
/ i 1 W
I ! \ _ _ OPEN PASTOR LOWES�BRANCHLS OF EX. L YLAND CYRESS j I I Cn
/ i I I :I i / - - 4 ` ` --- -- - 0 = - r HEDGEROW TO REMOVED TO ENABLE I 1 / 0 I I I 1,
/ %' / i 1 I I \ \ 1 . OHE X % �' INSTALLATION SILT FEN E JUST U HILL OF/ // J o I I
J /j / I V
I 1 I / "� 1 , \ \ ---- �- QBE f / TRE�{ TRUNKS.%MINOR FILL LACEMXT UND 1 � I II I M i I
j I I 1 \ � \ I UP i / / -DRIP LINE MAY( BE REQUIR D. � � / I � I ;
l ! / i s�o ~~ \ I i O / , /EX. FE CE TO BE EMOVED �' �Cl,
I I`
./ / / / ( ' i, ' \ \ ,/ / � NE -�, O' I,--- / / I ;I I UP TO THE SW CORNER � I i � Q I I
o f///,/// / \ 42� `\ 3 \ i- / °HF �\ ,/ / i S46°49'18"W / I II I I 1
/ / `�_ '1.1
�'` \ -_-_ EX. TREELINE; -l", / - - - ��: M M 0 �� 0 M 1111111111111111111111111 11111111 illiiiii W1� / 11 I I I `i
( EXISTING FENCE TO BE REMOVED ALONG� � - _- _ 570 __ _ _ -- _v -_ - �� I FHA
- _
-------__ PROPERTY LUN AS NEEDED TO COMPLETE SITE TYP. 34B _ - _-_- _-_ _ _ / 54.45 o o I I . APPROXIMATE I�
57o---Now-or Formers I 43 - � � 11 - f --- -_ -_ _ _- ---- - \ - - - _ TRESS T6 BE I .
y '1. IMPROVEMENTS. FENCING MAYBE ADDED BACK N ' /' == 5�0 � \ I; ss 4EMO
OCATION TO END
MEDICAL OF AM�RICA 1 , , / ' "' / / - '� '' - _ ___ _ _ -_ - \` -- _ "REMOVED IF_NEFBED
AT OWNER S DISCRETION ;ALONG THE SITE S -^ O ( / �/ - - --`=" OIC lr- -OR. CONSTRUCTIION ui ; I O OF EXISTING I
f\ / PERIMETER i �/ i O / ,/ / ' -560 tp - _ - -- -- '1i- „- �_� -5s0.� } IDEWALK Ii
D.B. 3678 PG. 655 \ _ / �' --- - / co r / / / ----- -- � - -\ \ \' 6 I I I j
Zoned: R6 \\ 1 0 34 % �- � ' // l EX. CO RE E W LL
S -- - -.` 0 ' / 1
Comp. Plan: Urban Density \ & --� " `� ( I Up, , (Cil �� // ! � ( (7 i I -- j -_j i ---I,
Vis% i t I I I
°M \\-_- -0ff �p ; 1 j I,'\. I 11
Use. Res ntlal r r 5 > =
rd� UP - ��" �•'-'� iCENTEL F1 -6C \ ( / / / / I I --- - Iii I I I
\ r / 1/ 4 SPACES AND CURBING I I
\, `\ CENTEL F1 6D \,\ /`y -� -\ / �4 � / , \ \
_~ �\ \ \ --�- / /'� EX ASPHALT P RK1NG TO BE REMOVED FOR -'' T- '
T
lock 5
Lot 19
61 M--O�
\ f
�.. �.I�1
~„
�-
Block 6 `~-,
� Lot 1 ,\
I w or Formerly l
TMP 91 M--06-1
WILLIAM . THOMAS OR RA EL Now or Formerly
T, CASTILLO PREMIL OR RANKA CETIC
D.B. 2829 PG. 593 D.B. 2301 PG. 366
------_Zon R2 W.B. 72 PG.
i ��
Corgi. Plan: Neighborhood ensity Zoned 2
--J Use: Residential Comp. Plan: Neigh orhood
Use: Res ential
I l
SURVEY DATA:
1. PHYSICAL TOPOGRAPHIC & BOUNDARY:
ROBERT LUM DATED 5/30/03.
O
,
2. ADDITIONAL SURVEY WORK PROVIDED BY
THOMAS B. LINCOLN LAND SURVEYORS, DATED
5/31/07 & 111/15/07. DATUM: NAVD 83 (STATE
PLANE); BENCHMARK: TOP OF FIRE HYDRANT;
ELEVATI N = 566.50
3. CURVE DATA:
C1 = (R) 2648.37' (D) 4°32'14" (T) 104.92' (L) 209.72-
4. LEGEND:
BG = BLACK GUM CHR = CHERRY
HEM = HFIMLOCK LOC = LOCUST
RO = RED OAK RM = RED MAPLE
VP = VIRGINIA PINE WAL = WALNUT
WO = WHITE OAK
■
ADJACENT OWNERS
iTax Map & Parcel
(Owner
D.B. - PG.:
61M 121A1
Anthony or M' KI'll. Valente
Ant o a
y Mary
1613-4471
I -1-- _11-..-
61 M--12-1 A2
. KOM, LLC
3049-506;
61M --12-1A3
_ _..
-'--'-MTB Investments, LLC
3072-660:
614--12-1A4
DEMREP, LL(C
1743-357'
_
61 M 12 1 A5
_,I
1 0 -439?
6 6
..
61 M- 12-1A6
I
1726-211 ;
61 M--13-1 F1
Lawrence L. o)r Priscilla Critzer
1521-280'
Vis% i t I I I
°M \\-_- -0ff �p ; 1 j I,'\. I 11
Use. Res ntlal r r 5 > =
rd� UP - ��" �•'-'� iCENTEL F1 -6C \ ( / / / / I I --- - Iii I I I
\ r / 1/ 4 SPACES AND CURBING I I
\, `\ CENTEL F1 6D \,\ /`y -� -\ / �4 � / , \ \
_~ �\ \ \ --�- / /'� EX ASPHALT P RK1NG TO BE REMOVED FOR -'' T- '
T
lock 5
Lot 19
61 M--O�
\ f
�.. �.I�1
~„
�-
Block 6 `~-,
� Lot 1 ,\
I w or Formerly l
TMP 91 M--06-1
WILLIAM . THOMAS OR RA EL Now or Formerly
T, CASTILLO PREMIL OR RANKA CETIC
D.B. 2829 PG. 593 D.B. 2301 PG. 366
------_Zon R2 W.B. 72 PG.
i ��
Corgi. Plan: Neighborhood ensity Zoned 2
--J Use: Residential Comp. Plan: Neigh orhood
Use: Res ential
I l
SURVEY DATA:
1. PHYSICAL TOPOGRAPHIC & BOUNDARY:
ROBERT LUM DATED 5/30/03.
O
,
2. ADDITIONAL SURVEY WORK PROVIDED BY
THOMAS B. LINCOLN LAND SURVEYORS, DATED
5/31/07 & 111/15/07. DATUM: NAVD 83 (STATE
PLANE); BENCHMARK: TOP OF FIRE HYDRANT;
ELEVATI N = 566.50
3. CURVE DATA:
C1 = (R) 2648.37' (D) 4°32'14" (T) 104.92' (L) 209.72-
4. LEGEND:
BG = BLACK GUM CHR = CHERRY
HEM = HFIMLOCK LOC = LOCUST
RO = RED OAK RM = RED MAPLE
VP = VIRGINIA PINE WAL = WALNUT
WO = WHITE OAK
■
ADJACENT OWNERS
iTax Map & Parcel
(Owner
D.B. - PG.:
61M 121A1
Anthony or M' KI'll. Valente
Ant o a
y Mary
1613-4471
I -1-- _11-..-
61 M--12-1 A2
. KOM, LLC
3049-506;
61M --12-1A3
_ _..
-'--'-MTB Investments, LLC
3072-660:
614--12-1A4
DEMREP, LL(C
1743-357'
_
61 M 12 1 A5
_. .. - - -.. ___.__ __. _ . ._... ..
n W. o
Stephen r Joan B. Hackett Scott
1 0 -439?
6 6
..
61 M- 12-1A6
_- -
' DEMREP, LLC
1726-211 ;
61 M--13-1 F1
Lawrence L. o)r Priscilla Critzer
1521-280'
,614--13-1 F2
Russell L., Jr. or Jeanne C. Miller
1533-295,
:61 M -13-1 F3
__ _. _' .. -..
; Kenneth L Davis
.
2662-4991
_ _..
61 M--13-1 F4
. _
Daniel and Graham Spencer, LTD
-
1528-241:
m.. _... .
61 M--13-1 F5
Russell L., Jr. or Jeanne C. Miller
1902-485.
_
61M --13-2F1
. -
°Joel M. Schectman or Lisa Draine
-. -11, 11
3282-303
61 M -13-2F2
Montie A. or Jlune M. Pritchett
2460-121;
:614--13-2F3
; Dhanvant H. o r Devyani D. Goradia
1901-391
61 M --13-2F4
_.
DEMREP, LLC
_
1700-147.
Density
NOTES:
44A \.� 4B 4 \ E S46°49'�----- - `--- �� ! //� x INTERCONNECTION TYP. �' 1. I - . Up 1 1 ( I
\ !- -`I / ;
1 i t
� .. _� �����• _...®..._.._ ti M W_ / /f r/ ----- - - - ----------- --- -- - - `.
,l �. E
_ = \ \ I I'
i ,.; I I
- --
_ 1_... \ , - 1 �` ---- \v % �- - i 1 I�ERMINATE OVERHEAD
l J
/ \ - /L 4 �- - -- _f 4 .51 / f - -- lock Al �_� Block Al ---- 1 i
LECTRIC SERVICE AND
_ _ -- - \ --- - --- --_w --- , h° TMP 61 M-�12-1 A2 thru 1 �A6 TMP 61 M--12-1 Al j j I
�; - % _ _ _ - -- f o� - -- 1 % _ LP �I F�LACE UNDERGROUND
�. ;-._ 57 -- -
o I
-- -
_ _ ____ __ % % BERKM �R-OSS( BERKMAR CROSSING _ \
---
__" -- _ -
---- - --� O N D OMINT I ----------- 11
/ - --- --- -- ____ --
' %�/ -- - --- - - -560- -- -- - - // C} - C M-A-SSOCIATII CONDOMINIUM / I II
--
�� --- - fi --ET_AL_ _ ASSOCIATIONS ET AL -------- /t�' I '
I O/f - - _\ -- - - - - _-- - - - , ned: C1 - - Zoned: PDMC - -
h�_
L t 2 - - __ - - __
�_-� I � -_ - I I d� � I
- I Comp. Plan: ommunity S rviceComp. Plan: Community Service 1 //
--__ _ I j
6 M--06-2 5so i -- - 1 I
_ - � I !
-- - -
---- -- ____--- - --- ' / I j
_.- I �- / ' - / I I I
Z. Bllock F1 dock F1 Use: Co merclal-Offipe Use: Commercial -Office - / I , , rid 1
I ow or-. o rly / I 1 11� �S e chart / I See Chart I
11 _ TMP 61 M- 13-2F1 thru 2F4 I I TMP 61 M--13-1 F1 thru F5 ,I _ i1 i
EEN S. W ---
-(LINE ,� rt
BERKMAR CRO SING CONDOMINIUM BE MAR CROSSING CONDOMINIUM I!
- : _ __11L - --- ---- - ---------__........_ ! __
11
D.B. 804 PG. 52� �l / \ II !
ASSOCIATIONS ET AL ASSOCIATIONS ET AL -- I / 11 i' I l`` -
I W.B. 72 PG 148 i II _____ / __- _--' I II \ 11 _
I Z ned: C1 I Zoned: C1 II - ` '
Zoned: R2 I -- - �` i / / I Il I I 11
I Comp. Plan: Community Service Comp. Plan: Community Service 11 BERKMAR CROSSING \
Comp. Plan: Neighborhood Density f1 ( _ ii I 11
Use: Commercial -Office Use: Commercial -Office �, � __ s -- J 1 l ; I
Use: Residential I I- -- !_ ___ J U 11 I I l
I See Chart I See Chart 11-- ! __ _.__...._-_-- II Il
i
--_____-- -------
! 1 I I t '
I------ I i II I ,---____ \-----_._ I 1
TREE INVENTORY:
Z
1. THE PROPERTY LIES WITHIN FLOOD ZONE C AS
SHOWN ON THE FIRM MAP PANEL NO:
51000602308.
2. THIS PROPERTY DOES NOT HAVE ANY
CRITICAL SLOPES.
3. DATUM: STATE PLANE COORDINATE 1983
BENCHMARK: TOP OF FHA ELEV. 566.50
27B 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
Key
Tree
Caliper
�,>
Health
TBR
0a
Key
Tree
Caliper
Health
TBR
Key
Tree
Caliper
Health
TBR
1
Key
Tree
Caliper
"\
Health
TBR
_
Key
Tree
Caliper
a
E�5
Health
TBR
o UO
U N
rQ)
Key
Tree
Caliper
Health
TBR
- -: _
D _ _ _._._
Good Avera e Poor Dead
g
--_........ _ _.._._. Good Avera e Poor Dead
- g
r P r D
Good A ve a e Poor Dead
g
_::::
Good Avera e Poor Dead
g
; Good Avera P r D
g e Poor Dead
A r
Good ve a e Poor Dead
g
a)�0
Lo U)
1 American Holly 12" X
8 White Oak 36" 1 X
13 White Oak 20" 1 X X
24B Holly 8" X X
338 Dogwood 8" X X'
39 White Oak 48" X
X;?.
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 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
X
2A Walnut 12" X I X
10A Red Oak 20" X X
15 White Oak 30" X X
27 White Oak 36" X I X
34A Cedar 10" X I I
a nu
1X
3 Walnut 18"X X
10B White Oak 40" X X
+� A
16 White Oak 36" X X-
27A Hemlock 12" X X
__jF
34B Cedar 8" X X
41 Red Oak 27" X
X
4 White Oak 181, X
11
I
10C White Oak 20" X X
17 White Oak 42" 1 X X
28 White Oak 18" X
35 Red Oak 20" X X-'
42 Cherry 22" 1 X
X
4A Cedar 14" X X
2 X X
10D White Oak 0
X
17A Hemlock 8" X
29 White Oak 30" X X
35A Red Oak 10" X X
Cherry
43 Cher 24" X
X
4B Cedar 15" X X
10E White Oak 42" X X
1
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 X
19 White Oak 50" X X
31 White Oak 36" X I 1
350 Holly 8" X X
44A Cedar 15" X
X
5 Red Oak 33" X
11 Red Oak 24" X X
20 White Oak 24" X X I 1
31A Holly 8" X X'
35D Holly 10" X X
448 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`
6 Red Oak 28" X X
11 B Red Oak 18" X X
21A Oak NA X X`
32A White Oak 6" X X-
36A Cherry 8" X X
44D Virginia Pine 15" X
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6A I Holly 15" X X
I 11C Virginia Pine 15" X X
22 White Oak 30" X I I X
I 328 lHemlock I 6" I X I IX
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44E Cedar 20" X
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6B Red Oak I n0" X I X
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11D Virginia Pine 15"X X
23 White Oak 20" X X
32C Hemlock 6" X X
38 White Oak 35" X X'
60 Red Oak 112" X
11E 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 X42" X ------------ +_
12 White Oak 32" X FX
24A 10ak NA X X
33A lHolly 10" X I X
38B Red Maple 101, I X I I 11 I X''
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Edwards designStudio, PLLC
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
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telel 434.531.5544
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Edwards designStudlo, PLIC
Landscape Architecture and Site
Planning
4936 Old Boonsboro Road
Lynchburg, VA 24503
tele) 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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ARBORIST SHALL BE CONSULTED AND MADE
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L ORDER TO BE ON-SITE DURING THE
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ENSURE THE SURVIVAL OF THE TREES BEING
PRESERVED. CONTRACTOR WILL BE HELD
WIRE REINFORCED
SILT FENCE, TYP. ACCOUNTABLE FOR ANY TREE DAMAGED AS
THE GARDEN SPOT
A RESULT OF TRIER, OR TRIER
f SUB -CONTRACTORS, ACTIONS. FINES WILL BE
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X LIMITS OF
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1. THE CONTRACTOR SHALL INSTALL TREE PROTECTION FENCING BEFORE DEMOLITION OF BUILDINGS.
PRIOR TO CONSTRUCTION. I ION: -SOILS___
\ \1110
(APPROX. 9 -AG)_
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.
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 D
A�BORIST. KEEP CHIPS ON SITE FOR USE IN TREE PRESERVATION AREAS.
k? -A
gupvi 545, 0-6
560 LIMITS OF—""
5. TREE PROTECTION FENCING TO BE INSTALLED BY THE CONTRACTOR AS INDICATED ON THE APPROVED FINAL SITE PLAN. 4? E
6. TO AVOID DAMAGE OF SURROUNDING CANOPIES, SOME TREES IN CONSTRUCTION ZONES MAY NEED TO BE BRUSHED OUT BEFORE FELLING AND REMOVING STUMPS
CE
DISTURBAN
EX D-1-1
WITH HEAVY EQUIPMENT. (APPROX. 9.78 AC)
RNI 550, 11 A',
7. TREE AND STUMP REMOVAL FROM CONSTRUCTION ZONES. KEEP CHIPS ON SITE FOR TREE PRESERVATION AREAS AS NEEDED. - I I i EX WH
54432 Ip RIM R46,14
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8. THE ARBORIST SHALL ASSESS TREES FOR HAZARDS AND INTERFERENCE WITH CONSTRUCTION ACTIVITIES AND PRUNE AS NEEDED. J AJV� _..,4 32 P 9.04
PROT C Q I 1p V. 3 .04
9. THE ARBORIST SHALL CONDUCT WEEKLY SITE VISITS TO VERIFY COMPLIANCE WITH TREE PRESERVATION POLICIES AND TO EVALUATE TREE HEALTH.
T
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10. ARBORIST SHALL CONSULT OWNER AS NEEDED FOR ARBORICULTURAL ISSUES THROUGHOUT PROJECT.
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11. FOLLOWING CONSTRUCTION (AS NEEDED AND AUTHORIZED) THE ARBORIST SHALL:
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Ex. SMJ'iBy'?Xiv1,RGR-1-2
a. FERTILIZE WITH ADDITIONAL MYCORRHIZAE AFTER FINAL GRADING IS COMPLETED. THIS MAY BE DONE IN DIFFERENT AREAS AT DIFFERENT TIMES IF THE PROJECT IS, W'd OUT53iK3)�l,'
Mild 5,49.27
m
COMPLETED IN PHASES. 1W hAl' 542.1-5 i
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SS 546.92
b. PRUNE TREES TO ELIMINATE DEAD, DYING OR INTERFERING BRANCHES., IfIV OUT54'L29
IN 542,5± `0 /, hN 5- 35 61 6,
1; V11 'Viv" 0 �, 0I ,
C. ARBORIST SHALL INSTALL LIGHTNING PROTECTION IN THOSE TREES DETERMINED BY THE ARBORIST TO WARRANT SUCH PROTECTION. I hN14 06T542,32 \jIN 1A 1,UT 53'T
d. IRRIGATE IF NECESSARY TO SUPPLEMENT RAINFALL.
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.
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(- NET `STORAX REDUCED
— '1111"
1 1
I
I
1111 1-1-11- -. 1111.._ .1- 11-1 - 11-1-11-1-1 11 I 11 - 1111.
I 556 6629
� I
I
1111 ,
-�
1'��;i �
-
�
TO 34 C -Y,/ ACRE)
-
TO 34 CY./ ACPF)
� I
I - I I � I 11 11 1.11 1-11, 11 I'll -11'.. I- I— o I_ I I
Wet Storage: I
-
I 11 � --1
I � I
�
I I 11 I I � - '' -1 .- .1 - � ; I I I -
I
I I I I 1111..
- - -
� ,
�
-.14
I . . I
I
I I � - � I - - � - I I - - I I .- I "Ill: � I .11 --'I'll-
I ,
I I .
I I �
1111 I .
1. I --1111 •
Wet Storage Required (cy) (67 X DA) X 1.2
I _
-
28f
Design High Water
5I
553.4'
I-_--1--.1-11.-11
I I : �
I �
. Design High Water � �
... -1 1111 _.
Orifice Elevation (ft) !
•---___
I I- -I-- -1
551.0
- 1. 1 11-1 -111-1-1-1
111 ..I111 . 1--
;Top of Dam (ft)
- I
556.0,
Ibewatering
� .11111-1-- I _--1-------- � 1-11 I ____ 7, _______ - ____
.Top of Dam (ft) I I 1
-_1-_--_-1-- - -. -
Wet Storage Provided at this Elevation (cy)
- 1. .11, 11.11,
349.0
111 I "I - 1 1' -I - -
Top Width of Dam (ft)
__- - - I— I
6.0
I I I I I 11 1-111-111-1-1 ill, I . 1-1 I _-11-1 . -1111 - .1-1_1___.
� Top Width of Dam (ft)- 1
1
' - i'
Volume Before Cleanout (cy) (33*DA) �
1,
---___ - -'- - 'Available
Bottom of Basin (ft)
-
548.0
I I 11 I 1-11 1.11 11 I -11. - I ____ 11
'Bottom of Basin (ft) I :
. 4 �
: I
____ ---'__- __
Cleanout Elevation (ft)
. . 1
550.0:
__r .....
;Approx. Bottom Dimensions:
:I
, -1
34'x72'
- , I -_1 � -1 -_
1 Approx. Bottom Dimensions: i i
' -'--'- - : ' ' -_ -_ _ -
I � .
-_-1-
Distance from Cleanout to Orifice (ft) (> V)
�-I
-,JI
- _
;Upstream Face Slope:
1'3� 1
"I I11
- 1 -- _
2:1
,
Upstream - F--a--1--1c--- - -S---Tlo, p -e,-'
:
I1I1 � I 11�I1111..__
_111- _-, - I 1I'l 1111.1 11
I 5
. � I
-1--l-
� ;
I_
1-'l "' ____ ._________,_
,Downstream Face Slope: � 1 �
11
2:1 :� �
1 -1-1--1 -_.
Downstream w-nstreaIm Face Sic567i
- _. I _ - _ I .... ... ,,
ry-Siorage:
Dry I I I
-1
. - �
;
11
I I I- I �
. :,
: I I
I �
1 11 I ''I--
-
1
� -
I I ; I
I I I �
I I
Dry Storage Re'quirec1_('c_y') (67 X DA) X 1.2 :
I
2
28F,'i.2!,
I
I . �
� Baffles: I , I
no I
I I - 1-1 I I
I I I �
- ' - " -111- 1_111,�11111 I 11-14
� I
Baff les: " I � '
, - _1-___ __ - I I
Princip'le Spillway Crest (ft) 1
.1 -_______1 __
553.0° �
__ -i I- - -11 � -1 I 11 1-1- -11 � -1. I 11 I— I - � I- -1 - I'll,
�� Length of Flow, L (ft) 1
1. 11 I
66---
�
I :
11 ' " _ ' � ` _'
Length of Flow, L (ft) .
1I
II
�
Dry Storage Provided at this Elevation (cy) i �
I I
323.0
I I � I
� I
t Effective Width, We (ft) I
, k
I
58,24Not
I
E-060
I
Diameter oi"Dew"a' ... Dewatering Orifice ,(in) " , -,- -I--- __
�
_' ' - '
_ " , 4.0"i
11 .11 1-111, -
I . -111-1111-11-1-
IL/We (baffles I es- required red "if- _> ... 2) , -, I
I � " , , '" _ , -, I
--- I 11 - � - ,, 1 ... I - . 1111I.- � 1- - - ___--_1_ 1-1, . I
I'll - 1111111-1- -1
1. 71 � Calculatec
- --
N.T.S.
- - - - - -_ - -
Diameter of Flexible Tubing (in) (orifice+2") i
I
6.0
,
� � . I .
I � I
I I I � -
�
-1-i'll.- I - I'll, .. .... � . . ..... --- 1111-1-11 I --1
I
1 1 1 1 �
I I
I �
I 1-11 I'll, 11 I -11 1-111- . I'll, I'll -11-1_11 � -11 I
i i I
1-11 1111111-
�
11 I I - I 11.1-1 11 111-1 -11-1 11 I -11 I I I I - -..--,-1.- ___1_.__
..
�'Collars. � : ; �
� I i
: - ---
no' �
I 1-1
Collars: �: � I i
I I ,
�Uno,#:' , , __ - ... � I I I -1-11, 11 I I
i
-11 � I � -1-
; � �
11- _11 - I � -1 I I 11- I—- . - _11-- .1 � � - - �- 1-1 I
i
',Depth of Water at Spillway Crest (ft) .
- � - I I -
I ;
15 ,
,U,,
_ I
I 11
� - --- � � - � -_
� Depth of Water at Spillway Crest (ft) I
I I I 1-11111-1-11-1-1-11 --11 1- 1-11. I 11 I -11 11-
c (use 0.45 for bare
baI r1e_
e'� aI r1t-h1--)
1-1 - � --111-1-111 "I'll
5�i.
-f 11-1 I 1-11 - 1-11-111 _--__1_1--111-., ---1111 I �
Slo"Ipe of Upstream Face 11)
-1-1-____
',,
c1-e1-
�-�,,�-i._.1--l. -,�,�,�I
.__ n' 1-1_-
/-
, I'', 111-1 . I -1 1_1-1_1 I—- � 1-1 __ - - I I - 11 _ I I
�
� I 1 Slope of Upstream Face (Z:1) i �
-_--1 1111 11--
tc (min) 1
_---.
-- 1 10.3I
--1-1-1 -11--
Slope of Barrel (Sb) ��
_1 -_1
1
n/a -I
I 11 11 - -111-11 I I I I - I
' ' . ,
, Slope of Barrel (Sb) I ; .
;
. yr 4.2 i 0 2yr
Z,1
��,
-''
Length of Barrel in Saturated (Ls)
-a _1
I/��
- _ -1 � , I -11 __",
' ' "" ' - ' � , -, , "' "
Length of Barrel in Saturated Zone (Ls) . �
--
I 25yr 6.i Q 25yr
� -11_
5.9
-_�. I I � 11-1 -
Number Collars Required
-11-,
:_..lIl�
n/a
- I-- - - - - --- --11111.1- - I - _. �
� I
, Number Collars Required �
- - - 1 1-1
150Yr16.6 Q 50yr
-0. I4
-
3,4
-(11Z.-: 11�-1-1.11111,11_1.�I�'
_-, 11 1-1-
,Dimension of Collars,
, -1 � I I
1.
_
n/a-
� I
-111 -11 I I-----,- - I I _1___-_1_-11 - I -------,--, -1
� j ;
Dimension of Collars � i I
I I I 1-1 - -1-1- t �
,
__ _-_ _
Principle Spillway: :I _
-
f
IEmergency
- - 1_11- - �
--
Available Head (f)
I,')
11 1
Spillway:,
I
no
_ - -1
-----1 -
-1�-
Emergency Spillway:.
-I
__ _______
Riser (in)
. _. ,
30
___ ---1-. - 11_11_
Required Capacity (Q25 -0p) (cfs)
1
I
1Diameter
.
Required Capacity (d��-bp) (cfs)
,_
i,
Spillway , -
pillway dapact_y, b' (c-f,s)
rI.C11 '.:
' -__--_,_-
B_ottomWi,dh(ft) I
-I
---
n-- /a
, �
- .I 1.1-1
Bottom Width (ft)
Diameter Trash Rack (in) ' '_ - . - " I '_� I 111 - ,
�_ ....___.
48
---1 -
_-_ .__- - I'I I'll -1 -
;Slope of Exit Channel (ft/ft)
' _.'
'
-I1I
-
n4 _-__
_.I,II.II1
__I—-
!Slope of Exit Channel (ft/ft)
--
''
Barrel Length (4)
88
1-1 ,
--__-_ _--- -- -
'Miniun Length of Exit ChaChannel (ft) __i__
11- 1- �
__ n/a
-_ .__ __ _ '" __1 I _1111.._
Minimun Length of Exit Channel (ft)
-1 1.1.111-
Head on Barrel through Embankment (ft) I
i i .0
----,---, ...I...
Crest of Spillway (ft) II
n/a -
1_
__
Crest of Spillway (ft)
'p
�I I - �
Diameter of Barrel (in)
I- �
15
_�II
- . - . -1 I
�
11_
I
TOP OF EMBANKMENT
ELEV. 572.00
DESIGN HIGH WATER
(50 -YR. STORM ELEV) MIN. 2.0'
DE ELEV. 569.55 f
(5
S
0
I
-
G
YR
N HIGH WATER
STORM
ELEV)
ELEV.
E V .569 .55
MIN. 3,0'
MIN. 0.5' MAX. 1.0' L
...
................
.. .
C.Y...... ... �. � ... ... �
346.0 C ... 301, 0 CMP
, � �� ........ .. .. � .... f . .,.,. RISER CREST W/ 48" 0
" DRY" STORAGE .. I ... .........
, , _ ........ � .... � .....
ELEV. 569.00 . I ......... I I ..... ...... ANTI -VORTEX DEVICE
I ELEV. 569.00
��................�-�............�..........�.,.......,...,...,...�...........--*,
344.0 C.Y. I ....... 4. pll�,.*.. _ � .... I ... I ...... '.*.*..,...
. ........................... ........
" WET " STORAGE ..%%..%.......... , . . � ... -1 . I . . . . .................. . . . I . . . . 4" DEWATERING DEVICE
....
�. -11.1.111.1.-1
ELEV. 567.00 .......... ... ,,Z...,M.1 Wit 6" FLEXIBLE TUBING
.1
, 2, i-Z,,i,��,xif, ��:t'�,�.;�:.%...e,.xx
,-,,,..'�,",--. 11M1f1., ..� -
.... .. 1.;:ffim� � .. ... . -1 ... ELEV. 567.00
. �. ... ...
. . . . . . . . . . . . . . - ....
"... .... ...".........- ..............
- ...
......... _ .
-
SEDIMENT CLEANOUT POINT INV. 564.60
ELEV. 565.50 L__7
DESIGN ELEVATIONS WITHOUT
EMERGENCY SPILLWAY
(RISER PASSES 50 -YR. EVENT)
-
B� SEDIMENT BASIN #2 DESIGN ELEVATIONS
8 ) SECTION
P
/ / / ! I f I I/ if J
/ . /I / 11
I ,
/ I /I I f I / / I /I A� -_
I / � ! I / . /
/ .. / / I 2 / / I/
1� I I / , ; I tI / ,� //I Q 11 /
/ / / / / / ! I f t ! / I I , � 4-1:r / / I
/ ,/ / / f I i I I if / f " lit 11 !
/ " c � I 11
/ / / iI / / 0
/ / / I , / I /t / , I i I t 1 1 , 1 i I I / I f / / I / i, Il QF / I I
I / / 11 11 I
I I .
- t"ll, 0 /
I /
I
__ ------- I/ 1� 11 � / I � . r 1 1 i j / I/
T " / I / . � I I / / (n, Q� /
I / I
I
, 11 �
4 . I I 11
"I / I . � 1 0 / Z
.
-, / / / I / i if I " if I
\ , �2 / I , I i i j I ij I /_-Z� 11
/ / / I I " , � I
\ / / I ! 11 I j i 1 / / /
I" / / , ! I '_1' I � it l i I
X j / � I I I I 1; i
/ / i ; i i . 11
i f .
I I
\ / / � � �
I .
� I
, / i If I i I � I I
\ , //(D I/ I
- I/- ; . . /
� Z i I I I
I I j
I I I j
I
I
- If I I I
,', Z / I I I I t JI i J` 11
Z \ �, %% I i I I I i I / I
. .
j i I I I \,\
I .
,-
Z
ZI ", I i i . I �,�� i ,,,, . . i
I/ i I , i 11 / " / �
. I '_
"/ �� W11 I ; I I -1 ! i �i i
I
, /, \ Z / I ; It 1 `11111 I �-___Jl 11 I . i
I ! ! I 1_,', j � il
, X / I I t !
i I i I ! 1 11
!
Z I � I � I I , i
1Z / i i I ,�_,�, I ; i
I i .
/ I I i � I
" t , t I
i i r I I�L Q I !
I
1 Z Z I . i � 1 1 11 11
I i ; I C / i /
I i
/`f
i I
/ I I!
I I ,� � I .
I
.
, i I I �l I I
I i I I
�, , I ; I 11 I 11-1 I I I
� I I . 11 I _� \ I r
X X // ! ! I / I '1 0
/ ;, t J I If
/ , I o
I .
I'
/
I
/11 ll ��,
Z ! I 11 / I "--" I
t
Z / .i /� t ! if � i
� Z \ Z / I / I
11 I � 11 / . (
i / I I 1 3: A
I , �
// \ / 1j I/ 11; ;/ / COORDINATE OFF-iTE CONSTRUCTION- i I I 1 j I . A
I
, // , / / / ! / 11 / " SCHEDULE TO M,IT'NMIZE DISRUPTION OF if if (D I, "--
I
I / � I ( I
I I ; � i
Z , / i ! HERITAGE HALL INGRESS/EGRESS I .
/;'
I I/ � I I I 1 � ', 0
/ 1�1 / � I / I
I f I RESTORE PAVEYENT AFTER CONSTRUCTION / I
/ i i 11 "_�
/ i I i I / i I I I
/ /
/Z j 11 11 ii / I I ,
I .
I , I
/I/ G. I _�
; I -
/ / .
/ (9 I i il I T��
/ e 11 I/ I I I if
7' 1 / 4 1 , ,
/ / - // / // 1; ft! I i � I I I 11 i
/ \ �� / / I 11 11 ill Ir
/ i � I I I � t / 1i -
I
/ i I i L ____ INSTALL STORM DI4AIN I \i i
/ _ __ 11 \ I I
I
/ Q , 11 / I 11 \ LINE 'G'TO DRAIN I I I I
_0
/ I ; -1 / 1; / I 11, I" ELE:DIMENT BASIN #�i AS 01
I // 0 1 / 11 I'll � ,� f , I"'I"i I 11
';%'
/ 11 i PAR STAGEW , I � ,
,
-;�_. 11 , / '11'_,1 I � I � 00 \1 -
I 7 � i 3 -00000
t"' / I / 11 i I/ '11� I'- I I I k, f I
� I � I I ; 11
I / \ I
� // I 0 / / I "I _ ----I-- _______ _ 1'�_� �I \
/ I if -__',� I �'\ , I I ) 0 ik I I Z
� / ", � � j
/ I j , \ I I ,
� ,
I
! / f , \ . I _00 ,/
/ i � I \ I/
� I i/ 11 / i If i ! i , \ � 1% �) I I '__1 \ \ 11
I I ; ', 1,� � , lV11
. � I I -_
\ I I / ,I--"--- ___.__ ____ ___ ___ \ , � \ Z I
i _ -_ _ 1111. - _ \ Ili It i I \ _
"I / f ---,-- __ ,---,-- 1, \ \ I . �ql I/ I - _1111-
i I
\ ,-_-
\--'
I I
� I I
I � , _\
I , �
i 11 I I RIP RAP LINED CHANNEL ', \1 I - //- - \ 00�
\ I , -
\ \ ti 1J1 11 j 2'DEPTH W[21 SIDE SLOPES \ I I ____1 �
11 I\ I i-- //
I I I
A ; � �, ! . '
\ !• ,I / I TIE TO EX. CHANNEL AS \ I t i // rr / \
\ 11 i i '___ 11
\1 � I / i 11 ----,.-- ------.. PART OF STAGE'A' 11 \1 "I L I III I ! i 1 / / \\ --- ___,___._____ __,________
\ �/ I I --I---- _ ___ . ..... __ ___ __ \ I �1 _____'_____1.__
- - \ \ it / -_ _11-1 -_ - --- _� I f i I / I I / / :�-7, -
---
\
r,, /
l I I 1'. EXISTING \, i /
11 \ , 1 If / / / // /
\ / ___ \ \ I �
I
, i ___1 11 I I
\ I 1_DRAINAGE LIMITS OF . .
l I if \\ I 1 1 / //
0) / I __ F,
;.-*_* 11 -,-- ____ DISTURBANCE
I - \ I I I I I ( -
\ . I __ __ \ I I // I +
6 � -1 ,,,, k I I
� op \ 11 if ,I If I ____ - ,-"-- - - - -1 . 9,78 AC) \ \ --," � t I 1 1 I I //
--.-. 11 t I -7
� I ;
I ------____,., 0:) �. I I
\ , 11 \ ll f I I � // 11 �
! __ ---,----, 0 f
I
,-----,. _ �, I- I //
i. " \ 1, � I . /
. - \. �
\ \ 11, I
i
___ -_1 I I I i
I f
I
I I - - - -7 - - - __�,, , I � � I
i - - __�\_ -1 I �; ;, 1� I I , I EXIS 1 18" STORMS STE
� I \ \ I-
I \ \ - - I I 11 i I I / (INA . ATE RECEIVI G
"I I I 1, __,__ i , , . ::>__ , I I � I i I I I I // I/
\ . I I �
11 1� - - . - , '' __ , , 1_�, I I I � CHA
\ \ \ \ I - . _ - ... - .- 1 � , F . I
\ - - - i I
I. . � ,,� X I . .
� , \ , -, ___ ... _. %q ,_ -,---- 1� t \ 'li � ` I I 11
-,-- - , . . ___ 1- - - -,,-;�' - ------ - ___ , I I i Ii I
\ 1\ - -I\- - - ___ I /I I I ill ) f �
\ \ \ ---- __ --- ----,-- 1� I,- 1- -r- ... - f, - -1- ___-:7 777--7- __Z_ __ - - I \ ,/ I //
11 11 1-1 _ -, - I - - i _____
I . --- - , Z /--,, - --- _ - 1� - I
I ��, � \ . '>l
-1 - - -.. - 1- - / I ,/ ___:!7_ _�_. i____-_ - i ! , I
1-1 - ) __ I____ 41) /J°'
'
I .
11 610 / ,, , _ �, I
I , .
I I \ __;_ 1� "/' , ( I---,---- - `11 I if Jr l
. � / / ____._____j_ __ \
� . -1 _�_ / /_�� I / // \
� ,- '-__ .., /) .
,
/ CY) _11,/// �
�, LO _ _ I
I \1 I -� ) " --' " 11X / , Z / . --- Z / � \
I I ,
I . - . 1�1 . I Z ___ - -I----- ---I_,__ Z / 1:��." / � / ////
I I I \ \
I \ - . if __ �
. I_ _ / Z -��
; \ 1� I/ '// 'I-, ,� Z I— ___, __ --- -_� \ \
I
\ \ , 11 // I \ 11 11 ) \
11 , \ / /I I _
\_ 1, __ I / / , / I/ __ -, ,.,-,--,- / 7 - I __ )
I I // __ "I
" // / I / � , /' / / ____ __/1 I �, 11 _,"', I
/
1111 / I /, ,�___ __ - .�1
/I-_
/ / / - "I "--"--, _
� Z-7)hIJ) IMhiN\ I 1JAZ751IN _L)hb1(UA,\,
� I ;
I
42, �,410"/b
I
Additional t�torage) , I
, I
1,
I
I 11 -
'0_0
2
I i
Drainage Area (acres) � I
I I
I I ___
4:
. �
MIN. 1* WI SPILLWAY
2'WITHOUT
.
CREST OF EMERGENCY
CL
- "I'll I I— 1111. - -- -111-1-:. -- - 11 ; - � �
Basin Volumes: (using 1' contour intervals) �
- 1-1-1-
o
3:
SPILLWAY
J-_ V)
W -0
8
3:
� I .DESIGN
I ;
Elevation (ft)' Contour Area (s�f);! Volume (cy)
, ,
''--'-
HIGH 'WATER
I -j-
(25-YP� STORM ELEV.)
.E
0-0
2 LIJ
"O
C T
S M
I - - 22�3,; , """
564
, 0
.
I
-
-0 .
M _J
_j
__ - - 1- ; �
- � . � I � � . _ �
1
1 565: 2795!
�
- - _ I �
1
Z94 �
0.51
-----
MIN, 1,01 -
I
I
_0 .=
CD -
�
1 566' 3366 i
208
..... -11. .-
. L ,, r ... - RISER CREST
Z -0
Qc>
E to
Z
- I I I � I 11 � I I - I I I 11 I - I 1, I � -1
567 3985 i
- � � . I �,
�
-11 I I I __
3 4 Ij I -
�
' DRY ' STOPAG . .J�
.111- ... I . � _
i rrr -
- DEWATERING
DLIACE:
-2-0
I � - - I I 1 - - I - __
t
I : 3 568' 4654
-11, - � �: , � � � -1 "I 1-1- i ,
- - � - - - _ -
504 I ,
I I , - �
, WET * STORAGE -1 � -11.1111.1-11
.2 M
0) �:
,6-0
, LU
I .
569 i 5370 �
'11 -
690
cu
, t
1IIIIIIIIIIIIIIIIIIIIIIIIIIIIII1
C co
:9P �:
-
V) '0
a) Lu
1 570; 6136 �
03
9-
I
.. -1111
V 0
(D
, ,�7
>, 6
-2
2 C
_0
In V)
C: V)
V
,4 -
I - -1111 - --1-11 � __
1
571'
�;
— '1111"
1 1
SEDIMENT CLEANQ1t,7 POINT .
(' WET' STORAGE REDI)CED
I
-
7
1 -
. I 1- I- -1 - .. I'll, I I_I I'l _i _ I—- -1
',I
----6-9-5--0 1 1
572 77771
---- --- --- - - -
I I
-1 I -1;: I
--
1J.181
TO 34 CY./ ACPF)
I
-
I
� I
11 1-11- 1- I1-1-1 11i 11.11 11 I'll
I
I Wet Storage: .
I
- - I
I . . I
I
I I � - � I - - � - I I - - I I .- I "Ill: � I .11 --'I'll-
I ,
I I .
I I �
- . 1. - 1-1 ._11
11
I
�� �]
=3
--,1111 ,.", 1-1-1111- ... - . . ,
Wet Storage Required (cy) (67*DA) �
I -
`,;2 1 � t5i �
I-_--1--.1-11.-11
I I : �
I �
. Design High Water � �
569.6 I - - I -1
a>
_-_ 1-1-1.111-111-111.11-1 ___ I ��
Dewatering Orifice Elevation (ft)
--- I 1-1 I -,
567.0- 1
� .11111-1-- I _--1-------- � 1-11 I ____ 7, _______ - ____
.Top of Dam (ft) I I 1
572.01
1 I'll I � I
W4 -storage Provided at this Elevation (cy) 1
I -1 I- I 11
344.0'
�
I I I I I 11 1-111-111-1-1 ill, I . 1-1 I _-11-1 . -1111 - .1-1_1___.
� Top Width of Dam (ft)- 1
- I 11 --- I
8.0
W
C1 45
=
, I - -
- -(cy)
Available Volume before cleanout (cy)(33*DA) I II
I I- - � � 11 I
1;:32,0 ,
I I 11 I 1-11 1.11 11 I -11. - I ____ 11
'Bottom of Basin (ft) I :
. 4 �
: I
.11-1 -11
564.0
ISSUED: 23 Feburary 2017
-1 I , __ -11, 11 I -1-1 ---- -- - I I � I -
I I tI
Cleanout Elevation (ft) i � I
11-I - -
565.5�
- , I -_1 � -1 -_
1 Approx. Bottom Dimensions: i i
' -'--'- - : ' ' -_ -_ _ -
I � .
' - - ' ' ---
28'x98':
bb
S�
istance from
DistanceCleanout to toI ifice (ft') (>� '1') ' , ,
,
,
Upstream - F--a--1--1c--- - -S---Tlo, p -e,-'
:
IF
2:1I
1. 04-23-17, CO. ENGR. COMMENTS
I .Or
"' " I _1-1- .
1 1--2 .
1 -1-1--1 -_.
Downstream w-nstreaIm Face Sic567i
---,
--
3:1
3:1
0
I _ .. __
Dry Storage: ... ' ,
-'-('c
.
1
� -
I I ; I
I I I �
_ I _
I
_11-111-1 I
I
Dr y s t o"ra g e' R e"q-tu ir ed' y) - ('6 7-*D''A) _ :
- 11 I 11 I � I'll, - "I
,�,� �: .
, n, I
,_ ,; I
I I - 1-1 I I
I I I �
- ' - " -111- 1_111,�11111 I 11-14
� I
Baff les: " I � '
I 11 � -
no:
I-_
' _ ' ' ' - - -_ I I 1.
Principle Spillway Crest (ft) : !
569.0i
I
I :
11 ' " _ ' � ` _'
Length of Flow, L (ft) .
' 1 - .
30,
E-060
1 - I - - I I I -1 I 11 I I— 111-11- -1 -11111, I
:
Dry Storage Provided at this Elevation (cy) 1 �
1, � �, _ _
I
346.07
� I I � I - 11 -1-111-1 I
I ,-
I Effective Width, We (ft) I
I 32- 83;•
Z Not
N.T.S.
I - 11 -1 I I'll, � I— . I— � -11 1-11-111-_11111 - � - -1
Diameter of Dewatering Orifice (in)
� � I 1-1 �1111 � I
4.0,
I'll � I I I "I I—— I I � I— � - I- I - -1 � I -111,111- I I I I 11
i L / We (baffles required if > 2) j
- I - I I __
0,2 Calculated
111-- 111- - _ -1 -__-_----1111 I I'll, - - � -11 11 - ----11-
I
Diameter of Flexible Tubing (in) (orifice+2") 1 I
-111 - - I - -11,
6.0
�
-1-i'll.- I - I'll, .. .... � . . ..... --- 1111-1-11 I --1
I
1 1 1 1 �
I I
I �
I __ I
I I .
I -111__ - I I
i
I
I 1-1
Collars: �: � I i
I I ,
� :
no
,
Runoff: i � i
I 11
� - --- � � - � -_
� Depth of Water at Spillway Crest (ft) I
r�l�j
- I
c (use bA5 for bare ... earth) :
11 11
� -
0.45,
, I'', 111-1 . I -1 1_1-1_1 I—- � 1-1 __ - - I I - 11 _ I I
�
� I 1 Slope of Upstream Face (Z:1) i �
-1 11 I ;,
n/a-
_ - I I
I--'
tc (min) :
1. -
12.16
I 11 11 - -111-11 I I I I - I
' ' . ,
, Slope of Barrel (Sb) I ; .
;
-
n/a-
I 11 I I I—- 1- ''I � - �: I I I .
I 2yr Z 3.8 �, Q 2yr'
I- 1111-1- ,". ''I
6,81
- _ -1 � , I -11 __",
' ' "" ' - ' � , -, , "' "
Length of Barrel in Saturated Zone (Ls) . �
, , __ _____ , __ , . .
nUlLi �
11 - ---t - - 11: '' - � �
:
; I
i 25yr 1 5.6 1 Q 25yr; - - ''
I 11 ____
I'd. j �'
- I-- - - - - --- --11111.1- - I - _. �
� I
, Number Collars Required �
- __;_, - _ -1
n/a n
sI I _ I - I I 1-1-11--1 ___ -111-11-
I I
I 50yr i 6.0 0 50yr.
I 1 t I I ,
-11 - -- --- 1-1-
10�8
-111 -11 I I-----,- - I I _1___-_1_-11 - I -------,--, -1
� j ;
Dimension of Collars � i I
I I I 1-1 - -1-1- t �
,
I -1 I'll,
n/a. t
I-
I I
__1111
- - -- -_ ..... . . I I I I 1 I'll -_ I I - -
Principle Spillway:
I � -
- - 1_11- - �
--
--
-'o
__----_ _1_f_ II
Available Head ft
- 01
_ - -1
-----1 -
-1�-
Emergency Spillway:.
-I
n�.. '
-"-
Diameter Riser (in)
I
30!
Required Capacity (d��-bp) (cfs)
- . - --1--- ____
Spillway Capacity, Qp (cs)
10 I'
, �
- .I 1.1-1
Bottom Width (ft)
.
n/a'
. . - I --
Diameter Trash Rack (in)
48'
_.I,II.II1
__I—-
!Slope of Exit Channel (ft/ft)
--
n/a 1I
___
Length (f) , - I 1--1
_
100.
-_ .__ __ _ '" __1 I _1111.._
Minimun Length of Exit Channel (ft)
1111..
n/a!
on Barrel through Embankment (ft) 1
_1
7OF
1_
__
Crest of Spillway (ft)
I-
__ IHead
n/a_
Diameter of Barrel (in)
18C ,
'
-,i
-�
-�:iI II5 I
I I
�1
II
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LE: 1 " = 30'
"q '\ \ \ I I \ I \
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EXISTING" 1,8'1 S R\M�SYSTE:M \ -/ I ` , \ \ \ \\\1 \% \
I
(INADEQU,ATtE RE IVING� \\ - \ � \
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N IIIIIII I
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0 15, 30' 80' 120'
SOURCE: MICHIGAN SOIL EROSION AND SEDIMENT
CONTROL GUIDEBOOK 1975, AND USDA -SCS
FLOW \��,
'
FLOW�� ,__
1 /�/
"
�-�-
N \��\fr _,
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FLOW -,���,�, , -
e //�
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FLOW
SEDIMENT -LADEN RUNOFF
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- REQUIRED
I I I �\\, ,- ,
MAX. SLOPE 2:1
STORM WATER WITH
LARGER PARTICLES
REMOVED
DRAIN INLET
DEPTH BELOW TOP OF INLET :
MIN. V- MAX. 2'
- v
T I I I I _L 1121-1-11-i
:_
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PLATE 3.07-4 1
LARGER PARTICLES
SETTLE OUT
THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE HEAVY FLOWS
ARE EXPECTED AND WHERE AN OVERFLOW CAPABILITY AND EASE OF
MAINTENANCE ARE DESIRABLE.
SECTION
E-011 I
N.T.S.
IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII
Edwards designStudlio, PLLC
Landscape Architecture and Site
Planning
4936 Old Boonsboro Road
Lynchburg, VA 24503
telel 434.531.7507
esteve@edwardsdesignstudio.com
I www.edwardsdesignstudio.com
ALAN G. FRANKLIN, P.E. LLC
Civil and Site Planning Engineering
427 Cranberry Lane, Crozet, VA 22932
tellel 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
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.edwardsdesignstudio.com
3" SM-2A ASPHALT TOP COURSE FILL SLOPE SECTION ALAN G. FRANKLIN, P.E. LLC
C
A EXISTING WIRE SCREEN CONCRETE BLOCK Civil and Site Planning Engineering
. ....
2% 2% ----- 7-- PAVEMENT 427 Cranberry Lane, Crozet, VA 22932
IL-1 11 II SOIL STABILIZATION MATS SHOULD
DIVERSION DITCH VDOT #21A BE INSTALLED VERTICALLY 10 5. NOTE: SLOPE SURFACE tele 434.531. x544
AGGREGATE BASE DOWNSLOPE FOR BEST RESULTS. SHALL BE SMOOTH el alanaalanfranklinpe.corn
AND FREE OF
ROCKS, LUMPS OF
2,-
Ll 91010 DIRT, GRASS AND KEY:
SIDE ELEVATION i1111? .. ... .. .....
STICKS. MAT SHALL
5° BE PLACED FLAT
ON SURFACE FOR
PROPER SOIL
CONTACT. % -
EXISTING GROUND W
eb
r 4-
2'_
C
ME
70' MIN.
/Slitek
El, 11 II= iy
TME
MIN.
17
p"-
ASPHALT PAVED WASHRACK GRAVEL FILTER
Z: DIRT SHALL BE
2% TAMPERED PRIOR
WIff TO LAYING TOP
----------------
LAP OVER
12' MIN. EXISTING
GRAVEL FILTER
PAVEMENT 12"
i"If
—0/6 2% WIRE SCREEN RUNOFF WATER WIRE MESH
FILTERED WATER I -- FILTERED WATER TOE BERM
DIVERSION DITCH MIN.--/ POSITIVE DRAINAGE 10, MIN�' A MAINTAIN SLOPE ANGLE TRENCH INTO BERM AND
WIDTH AT DESIGN WATER TO SEDIMENT OVERFLOW E MEMMM PROGRESS DOWNSLOPE
ELEVATION IS 4ff TRAPPING DEVICE RUNOFF
-d'
WATER ........... EL
WITH .......
SEDIMENT
........... -41 W_ TOP OF
PLAN VIEW
71- IT CUT SLOPE
SLOPE LINING SLOPE LINING
11 F DROP INLET
----------- —
A
---------- - WITH GATE
[UL SEDIMENT 11 ILI 0 A-
(WET SLOPE) (DRY SLOPE)
SEDIMENTCONCRETE GUTTER 12" -1
MUST EXTEND FULL WIDTH CURB INLET TREATMENT-2 I.
SET 1,V2" WATER HYDRANT WITH
OF INGRESS AND EGRESS SPECIFIC APPLICATION
OPERATION FROST PROOF HYDRANT 3' POLYPROPELYENE 21
ABOVE GRADE AND 4' OFF NON-WOVEN
70' MIN. EDGE OF PAVEMENT THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE (NEEDLE PUNCHED) Ck_01\A TREATMENT-2
HEAVY FLOWS ARE EXPECTED AND WHERE AN OVERFLOW SPECIFIC APPLICATION GEOTEXTILE FILTER sougce
2% CLOTH (BEHIND IFIERi 11111111
k
CAPACITY IS NECESSARY TO PREVENT EXCESSIVE PONDING TREATMENT-2)
Ell'
94
AROUND THE STRUCTURE. R
IlEw
MON
SOIL BOTTOM OF FILL SLOPE
NOTE: A MINIMUM WATER TRAP OF 1" IS REQUIRED %M
THIS METHOD OF INLET PROTECTION IS APPLICABLE AT CURB INLETS
WITH A MINIMUM WASH HOSE DIA. OF 1.5" GRAVEL SHALL BE VDOT #3, #357 OR #5 COARSE AGGREGATE. WHERE POINDING IN FRONT OF THE STRUCTURE IS NOT LIKELY TO CAUSE
INCONVENIENCE OR DAMAGE TO ADJACENT STRUCTURES AND UNPROTECTED
SECTION A-A AREAS.
1l1-
BOTTOM OF CUT SLOPE . =%Z.
/ "
GRAVEL SHALL BE VDOT #3, #357 OR 5 COARSE AGGREGATE. BOTTOM OF CUT SLOPE 4 OR SHOULDER
BREAK POINT Z
ALBEMARLE COUNTY CONSTRUCTION BLOCK & GRAVEL DIR301DINLET SEDIMENT TYPICAL TIREATMENT-2
JP SOIL STABILIZATION MATTING 0 SLOPE INST.
�A ENTRANCE E-001 F I L T E 1R\ E-009' GRAVEL CURB INLET SEDIMENT FILTER E-012' D oc E-070
SECTION N.T.S. � �9 SECTION N.T.S. SECTION N.T.S. DETAIL N.T.S.
PRESSURE RELIEF
SOURCE: USDA-SCS HOLES 112" DIA. PLATE. 3.14-10
U)
PLATE. 3.05-1 Source: Va. SWCC Plate 3.11 -1 C:
SOURCE: Adapted from Installation of Straw and Fabric Filter Barriers for Sediment Control, 0 0:g
Sherwood & Wyant ftz 0
0
A 0 A 0 0 �5
TOP STIFFENER (IF REQUIRED) M
CL -0
IS
_X_X -ANGLE WELDED
TO TOP AND ORIENTED PER-
L 0 0 0 -0-0
STONE WEIR 0 PENDICULAR TO CORRUGATIONS, 210
SIDE SLOPE REGRADED 0 @
1. SET WOOD POSTS AT MINIMUM 6' 2. ATTACH ORANGE POLYETHELENE FABRIC REBUILD AS
TOP OF BERM TO 3:1 (MAX)
SPACING AND EXCAVATE A 4"X4" TRENCH SAFETY FENCING TO THE POSTS. NECESSARY
UP SLOPE ALONG THE LINE OF POSTS. 0 TOP 13 jCAGE CORRUGATED
0 0 METAL OR 1/8" STEEL PLATE.
VDOT #1 PRESSURE RELIEF HOLES MAY
0 -0
0 BE OMMITTED, IF ENDS OF
0
COARSE AGGREGATE CORRUGATIONS ARE LEFT FULLY E
OPEN WHEN THE TOP 13
PLAN VIEW :2P
ATTACHED. a)
E 0
-0
CD Z 2
-FILTER MIX
OR TESTED APPROVED TACKWELD CYLINDER IS GAGE CORRUGATED
LUCK BIO
AND EQUIVALENT ALL AROU ID METAL PIPE OR FABRICATED FROM
9
H STEEL PLATE.
Jill UNDERDRAIN GRAVEL NOTES:
ORIGINAL SILT -
. . . . . . . . . . . . . . . . . . .
. . . . . . . . . . .O
TRAPSIDESLOPE (AASHTO M43, . . . . . . . . . . 1. THE CYLINDER MUST BE -2
1/2---11") WRAPPED . . . . . ... ........... FIRMLY FASTENED TO THE 0
IN FILTER FABRIC TOP OF THE RISER.
o
MINIMIJ MA PROVIDE PIPES
ACROSS ENTIRE WIDTH REMOVE SILT AND
#6 X 12" SUPPORT BAR SIZE
AT 20 FT O.C. SEDIMENT AFTER FINAL SPACERBAR (#6 REBAR MIN.) 2. SUPPORT BARS ARE WELDED
(TYPICAL) TO THE TOP OF THE RISER
STABILIZATION. REPLACE OR ATTACHED BY STRAPS
Jill, 1:�
FLOW
WITH LOAM OR GRANULAR BOLTED TO TOP OF RISER.
RISER DIAMETER N
0
4' EARTH FILL.
PROFILE
TYPICAL GRAVEL STRUCTURE SECTION A-A ISOMETRIC
72
AHI ANTI- VOIRNTEX DEVICE DESIGN
3. ATTACH THE FILTER FABRIC TO THE SAFETY 4. BACKFILL AND COMPACT THE
FENCE AND EXTEND IT INTO THE TRENCH. EXCAVATED SOIL. DETAIL E-080
N.T.S.
E -5
E
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COMPACTED SOIL
0
Jill
CLEAN--OUT
TOP OF BERM -ERTIGHT <
W/WAI
X
CAP _j
-011 6" MAX Oj
FLOW MIN STONE
WEIR
"!4 , L
0
cn
0I C6 -2
EXTENSION OF FABRIC AND WIRE INTO THE TRENCH. 4"-6" NON-PERFORATED r- M
bp �:
UM PVC PIPE @ 1% MIN, LOAM OR GRANULAR 'Fn •b
6 SLOPE EARTH FILL______1 E
0
4"-6" PERFORAIFED PVC 4t
FILTER FABRIC ----------- PIPE @ 1% MIK, SLOPE
1:11 OF cn
'a
SAFETY CROSS-SECTION -�5 0)
TYPICAL EARTHEN STRUCTURE = a
FENCE
Alan G. Franklin cn
Lic. No. 35326
E
CONSTRUCTION OF SUPER SILT FENCE
2 (n
JUX 1% SILT TljLDxA 1Z R
(USING ORANGE SAFETY FENCE FOUR rF TEMPORARY 1j RLXIGHT - OF - WAY DIVERSIONS rG PRETROFIT T(l) B-310FILTER
ONA L
DETAIL E-029 E-021 E-037
E —c)
N.T.S. Q9� SECTION N.T.S. SECTION N.T.S. n
M
0
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Source: Public Facilities Manual, Vol. 111, Fairfax Co., Va., 1976 Plate 3.38-1 MIS
SOURCE: VA. DSWC PLATE 3.09-1 SOURCE: VA. DSWC PLATE. 3.14-3 Source: Va. DSWC A Plate 3.18-1
"A SCALE: As Shown z .0
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12' ISSUED: 23 Feburary 2017 1 >'
0
6 REVISIONS:
PIPE OUTLET TO FLAT
<
24" AREA WITH NO DEFINED 02-08-17, APPROVED BY BOS
Compacted Soil DRIP LINE L_ CHANNEL 1. 04-23-17, CO. ENGR. COMMENTS Z
PLAN VIEW
18" mi PROTECTIVE DEVICE tttttt 0
—Flow
Ii
Cn
MAXIMUM LIMITS OF Z
CLEARING AND GRADING 15
0
III I- - - --------
6"
4.5'min. PROPOSED GRADING 0%-
18" SHEET: 0
ILL
2 - ------- - --- ---
Uj
MIN. 5' Ll I--;-
i=l............ SECTION A-A FILTER CLOTH KEY IN 6`4'; RECOMMENDED FOR ENTIRE PERIMETER
30"
WHERE DRIPLINE NOTES: 1. APRON LINING MAY BE RIPRAP, GROUTED RIPRAP, GABON Uj
%040 IS LESS THAN BASKET, OR CONCRETE.
5- 2. La IS THE LENGTH OF THE RIPRAP APRON AS CALCULATED
TYPICAL CONCRETE BASE TYPICAL STEEL BASE USING PLATES 3.18-3 AND 3.18-4.
CONSTRUCTIONOPERATIONS RELATIVE 3. d = 1.5 TIMES THE MAXIMUM STONE DIAMETER, BUT NOT 0
LESS THAN 6 INCHES. Z
TEMP xr_") RAIDXY DIVERSION DIKE ('K� TO THE LOCATION OF P113\0TECTED TREES 7D I S E IDx P_ I P E BASE CONDITIONS rK IPE OUTLET PROTECTION
SECTION E-005 E-072 SECTION E-059 SECTION E-052
N.T.S. ��9JDETAIL N.T.S. N.T.S. N.T.S.
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Edwards designStudio, PLLC
Landscape Architecture and Site
Planning
4936 Old Boonsboro Road
Lynchburg, VA 24503
tele) 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
tele) 434.531.5544
el alan@alanfranklinpe.com
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// rr ANALYSIS FOR AREA B --\11 11 \
D.A. = 5
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(Includes 0.77 Acres of Permeable Paver Area) I
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Edwards designStudio, PLLC
Landscape Architecture and Site
Planning
4936 Old Boonsboro Road
Lynchburg, VA 24603
tele) 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
tele l 434.531.5544
el alan@alanfranklinpe.com
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1 l'` �`. �., I I
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,-I, t \'' ;
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Edwards designStudio, PLLC
Landscape Architecture and Site
Planning
4936 Old Boonsboro Road
Lynchburg, VA 24603
tele) 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
tele l 434.531.5544
el alan@alanfranklinpe.com
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55
55
54
53
t1
REINFORCED CONCRETE
BAFFLE WALL SECURED
TO STRUCTURE WALLS
i i. tl Ir �Y
1. 15" HDPE PIPE
PIP f i ------
TED
it VDOT STD.
I EXPANDED STEEL MESH (FLATTENED) SHALL HAVE
i ST -1 STEPS 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
4 SH CAN BE
TO BE CONSTRUCTED SO THAT THE ME
REMOVED FOR CLEANOUT PURPOSES.
PLAN
STRUCTURE SHALL BE CONSTRUCTED
FROM SIGNED AND SEALED DOCUMENTS
PRODUCED BY A LICENSED STRUCTURAL
ENGINEER
REINFORCED CONCRETE MANHOLE RISER ACCESS MANHOLE RISER ACCESS
BAFFLE WALL SECURED RIM ELEV. 551.63 RIM ELEV. 551.63
TO STRUCTURE WALLS
TW = 547.20
VDOT STD.
ST -1 STEPS
r 1 i v
! i I I V 10 -YR ELEV. 547.01
;' I l ' 8 1.0'x 1.0' ORIFICE
if i
W/ TRASH RACK
6'-6" I i( II INV. 545.75
3 I( ;
I ' I 2 -YR ELEV. 545 �'1 0.5'x 0.5' ORIFICE
OM PIPE' j li - W/ TRASH RACK
INV. 544.38
(P�FQ EO) j'
r ; WQV ELEV. 544.30-- _
2,005 CUBIC FT
INV 543.20 543.20 INV. 543.10
f,
6" PVC SECTION
INV. 543.20
SWM A - OUTLET STRUCTURE A4
DETAIL N.T.S.
111f1WP1Mjw1q1hili?
VIDOT STD.
ST -1 STEPS
6'-6"
"WEIR
60" CMP PIPE
(PERFORATED)
,1.0' x 1.0'___\7
ORIFICE
INV. 545.75
0.5'x 0.5'
ORIFICE
\INV. 544.38 '
61t -PVC
TO STORMFILTER
SECTION 15" HDPE PIPE
60" CMP PIPE STORMWATER DETENTION UNIT
SCALE H: 1" = 10' V: 1" = 5'
G
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ACCESS MANHOLE :. - -- ACC . S MANHOLE e,
1 =- _1 C2 -
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6 LF_OF465 HDPE @ 1.0%
20 LF 60" CMP
HEADER PIPE
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555
545
MR
' - ��k8'x6-STORMFILTER._VAULT
`1"6C,4RTRIDGES, OR EQU,
I
ALBEMARLE COUNTYGENERAL 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.
iL
a
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CONS7NJICTIO" LOADS:
FOR TEMPORARY CONSTRUCTION VF,N=z LOADS, AN EXTRA AMOUNT OF COWAC'IED COVER MAY 8E RECLARED OVER YME TOP
OF THE PW_ TINE HEIOMT--OF-COVER SHALL MEET THE NORM REOUIREMEWIS SOO" IN THE TABLE BEIM 1HE USE OF
HEAVY CONSTRUCTION EOUVMENT NECESSITATES GREATER PRDIEC110N FOR THE IM THAN FINISHED ORAOE COYER MINNUMS
FOR NORMAL HIGHMIAY T8A}m
PIPE SPAN,
RICHES
AXLE LOADS (kips)
12-42
2.O 3.3
3.0
3.0
+It# -72
10 3.0
3.5
4.0
7B -92f}
3.0 3.S
4.0
4.0
120-144
3.5 ;.0
4.5
4.5
*41WNd W COVER MAY VARY, DEF -H" O ONLOCAL COARDmms. THE CG gTRACTCR 4WSTPROME THEAAWT10N W COVER REOFJM A TO
AV00 01016IaGE TO 7WE PIPE. ANNAMAN COYER IS M?ASURM FRON THE TW OP THE PM'E 70 7PNE TOP OF THE 4/pNIrfA1I W CONSTRtCT10N
1X?A0WAY SURFACE
3 CONSTRUCTION LOADING DIAGRAM
SCALE I1.T S.
I #.
3
13
' l
o a�a/aa PROAMM ! PRoMMAL &UIP rs AUDI
Mo owe �EsaaProw tomm BY "Plm+ca BY
NOTE- - -
I. LOCATION OF ALL MANHOLES. STillr7S'. INLETS.
OUTLETS AND OUTLET CONTROL STRUGIURES. TO
BE SPECEIED BY f'ROJMT ENffWEER OF REC9R0
PRIOR TO FABRICATION.
2. ALL RECOMMIDIDED REINFORCING ON THE SYSTEM
WILL BE DEMM BY MANUFACTURER TO CONFORM
74 ASTM A9W AFTER PURCHASE ORDER IS 1Wi M.
TO S.F. DT E;4AINED
C CONTECH MANHOLE DETAILS
13 % SCALE: N.T.S.
TOP SLAB ACCESS
SEE FRAME AND COVER
DETAIL
ALTERNATE PIPE
LOCATION (IYP)
OUTLET SUMP
A
OUTLET
FLOW -- -- ` -
INLET� --- ---
t �
F [
INLET
DISSIPATOR j
STORMFILTER
fi CONGREfE WALL CARTRIDGE
WIDTH MAY VARY
REGIONALLY
SECTION B -B
VAULT STYLE: OUTLET SUMP (NIB)
CONTRACTOR TO GROUT TO
FINISHED GRADE
GRADE
RINGIRISERS
TRAFRC RATED MANHOLE
c
OR CATH BASIN (BY
'
CONTRACTOR)ATE
FRAME R151DE
VEHICULAR IKARI16 SURFACE
DIAME'TE'R SHOULD
{BY CONTRACTOR]
EQUAL APPROXI"TELY
CARTRIDGE HEIGHT 27-, 18', LOW DROP LD
(RISER 0 + 3")
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CARTRIDGE FLOW BATE
CNG
MEDIA TYPE PERLITE, ZPG, PSOM
ENGINEER
STEP
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SUBPGRAM
DIAMETER
CUT RISER TO FINAL ""-
Cm R WLLAR
ELEVATION IN FIEND
(8Y CONTRACT
_
USE FLEXIBLE JOINT
LLC REPRESENTATIVE. www.CotTO&ES.com
MATE'RWL TO PREVENT
CONCRETE FROM
ACCESS LADDER
(BY MANUFACTURER) C014TACMNC
WAY
'
RISER N ANY
'
SECTION Aa►
A
A -A
`--- REINFORCED CONCRETE MANHOLE
tAt=. CAP OESNGNEO BY ENGINM
1. 1 E CONCRETE CAP SHALL BE SIZED AND DESIGNED BY OTHERS
SO THAT THE LOADS ARE TRAN5MMTtED TO THE SOIL, ANO NOT
THE RISER.
2 "M CONCRETE CAP ;MALL 8E SITED TO PROVIDE APE AKQUATE
BOTTOM AREA BASED ON THE ALLOWABLY. BEARING CAPACITY
OF THE SOIL.
3 THE FLEXIBLE JOINT MATERIAL (RECYCLED VINYL OR EQ.j TO BE
STIFF nIroUGF+ SO THAT' THE CONCRETE CAN NEVER ENGAGE
WITH THE RISER COMfTU"RO NS
4 MANHOL.IE CAP DETAIL
\ItV scA1 E; w.T s.
STORMFILTER DESIGN NOTES
STORMFILTER TREATMENT CAPACITY IS A FUNCTION OF THE CARTRIDGE SELECTION AND THE NUMBER OF CARTRIDGES. THE STANDARD VAULT
STYLE IS SHOWN WITH THE MAXIMUM NUMBER OF CARTRIDGES (12). VAULT STYLE OPTIONS INCLUDE OUTLET BAY (7). STORMFILTER 8X9 PEAK
HYDRAULIC CAPACITY 13 1.8 CFS. IF THE SITE CONDITIONS EXCEED 1.5 CFS AN UPSTREAM BYPASS STRUCTURE IS REQUIRED
CARTRIDGE SELECTION
CARTRIDGE HEIGHT 27' 18" LOW DROP
RECOMMENDED HYDRAULIC DROP (H) 3,05' 2.3' 1.8'
SPECIFIC FLOW RATE (gpn*n 2 gpm+af 1.e7' gpm 1 gpmisf 2 gpmtaf 1.$7' gpmisf I i gpm isf 2 gpTh l 1.87' gpmlaf I 1 gpmisf
CARTRIDGE FLOW RATE (gpm) 22.5 18.79 11.25 16 1 12.53 1 7:5 10 1 8.55 F,
1.0f gpMIST �bt'LUWIU r-LLRT Buil t I.5' At- F' JVtU VVI I H t'NUthI't1U.`iUNiti [Y:SVKti) MI_UTA UNLY
CONTECIf
FRAME AND COVER
(DIAMETER VARIES)
N.T.S.
SrrE SPECIFIC
DATA REQUIREMENTS
c
STRUCTUREID
'
WATER QUALITY FLOW RATE (cfs)
'
PEAK FLOW RATE (cfs)
'
RETURN PERIOD OF PEAK FLOW (yrs)
'
CARTRIDGE HEIGHT 27-, 18', LOW DROP LD
"
NUMBER OF CARTRIDGES REQUIRED
'
CARTRIDGE FLOW BATE
'
MEDIA TYPE PERLITE, ZPG, PSOM
"
STEP
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PIPE DATA: I.E. MATERIAL
DIAMETER
INLET PIP E#1
Ec�
INLET PIP E#2
o
OUTLET PIPE
'
LLC REPRESENTATIVE. www.CotTO&ES.com
- - --
UPSTREAM RIM ELEVATION
'
DOWNSTREAM RIM ELEVATION
'
w
ANTI -FLOTATION BALLAST
WIDTH
HEIGHT
E 0
ASSUMING EARTH COVER OF 0'- 5' AND GROUNDWATER ELEVATION AT, OR 13ELOW,THE
NOTEWSPECIAL REQUIREMENTS:
* PER ENGINEER OF RECORD
-
SECTION A A
StormFlIter'
D CONTECH WATER QUALITY UNIT, OR EQUAL
13)
80 MM SOLIDER PERIMETER
BANDING COURSE
NO. 8 AGGREGATE
IN OPENINGS
EAGLE BAY AQUA BRIC 4-L
CONCRETE PAVERS
3 g" MIN. THICK
2" NO. 8 AGGREGATE
IRA
4" NO. 57 STONE =
12" NO. 3 STONE _
COMPACTED
SUBGRADE
1�
60 (.
ASPHALT/CONCRETE
PAVING SECTION
FLUSH CURB/EDGE
RESTRAINT
4\j ///,// '\j1.t/// X�, 1 '-COMPACTED
•\<......... SUBGRADE
VDOT 21A
SECTION ABUTTING PAVING GRAVEL
BASE
E PERMEABLE INTERLOCKING PAVERS
13 % SECTION
VDOT 21A
GRAVEL BASE
FILTER FABRIC
6" PERFORATED SDR -35
UNDERDRAIN
(TIE TO STORM DRAINS)
VDOT STD CG -6
NO. 8 AGGREGATE
IN OPENINGS
- EAGLE BAY AQUA BRIC 4-L
CONCRETE PAVERS
3 MIN. THICK
2" NO. 8 AGGREGATE
4" NO. 57 STONE
12" NO. 3 STONE
T
�- COMPACTED SUBGRADE
SECTION ABUTTING CURB
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
Edwards designStudio, PLLC
Landscape Architecture and Site
Planning
4936 Old Boonsboro Road
Lynchburg, VA 24503
tele) 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
tele) 434.531.5544
el alan@alanfranklinpe.com
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OVER FLOW 1. CONTECH TO PROVIDE ALL MATERIALS UNLESS NOTED OTHERWISE.
STEP
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ASSEMBLY 2. DIMENSIONS MARKED WITH() ARE REFERENCE 01MENSIONS. ACTUAL DIMENSIONS MAY VARY.
STORMFILTER
Ec�
3. FOR SITE SPECIFIC DRAWINGS WITH DETAILED VAULT DIMENSIONS AND WEIGHTS, PLEASE CONTACT YOUR CONTECH ENGINEERED SOLUTIONS
o
CARTRIDGE
U to
•O W
LLC REPRESENTATIVE. www.CotTO&ES.com
- - --
N
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4. STORMFILTER WATER QUALITY STRUCTURE SHALL BE IN ACCORDANCE WITH ALL DESIGN DATA AND INFORMATION CONTAINED IN THIS
_
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DRAWING.
_ 5. STRUCTURE SHALL MEETAASH10 H82D LOAD RATING,
m o
m
E 0
ASSUMING EARTH COVER OF 0'- 5' AND GROUNDWATER ELEVATION AT, OR 13ELOW,THE
---
-
ro N
a OUTLET PIPE INVERT ELEVATION, ENGINEER OF RECORD TO CONFIF*A ACTUAL GROUNDWATER ELEVATION. CASTINGS SHALL MEET AASHTC7
.o
IM06 AND BE CAST WITH THE CONTECH LOGO.
o �
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INLET PIPE
"
m 3
} 6. FILTER CARTRIDGES SHALL BE MEDIA -FILLED, PASSIVE, SIPHON ACTUATED, RADIAL FLOW. AND SELF CLEANING. RADIAL MEDIA DEPTH SHALL
c i
n - a BE 7 -INCHES. FILTER MEDIA CONTACT TIME SHALL BEAT LEAST $$ 3ECCINDS.
� 3
_
t7 I- w 7. SPECIFIC FLOW RATE IS EQUAL 70 THE FILTER TREATMENT CAPACITY (gpm) DIVIDED BY THE FILTER CONTACT SURFACE AREA (sq 11).
Gro
C: o-
_j z S. STORMFILTER STRUCTURE SHALL BE PRECAST CONFORMING TO ASTM C-357 AND AASHTO LOAD FACTOR DESIGN METHOD.
U
-
--- x
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o
INLET
_ _ INSTALLATION NATES
.,
Qm
A ANY SUB BASE BACKFILL DEPTH ANDIOR ANTI -FLOTATION PROVISIONS SITE-SPECIFIC
_ ION ISIONSARE SITE SPECIFIC DESIGN CONSIDERATIONS AND SHALL BE
_
�•
--- SPECIFIED BY ENGINEER OF RECDRD,
c >'
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B. CONTRACTOR T4 PROVIDE EQUIPMENT WITH SUFFICIENT LIFTING AND REACH CAPACITY TO LIFT AND SET THE STORMFILTER VAULT {LIFTING,
x
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CLUTCHES PROVIDED .
OUT -FT PIPE C. CONTRACTOR TQ INSTALLJOINTSEALANT BETWEEN ALL VAULT SECTIONS AND ASSEMBLE VAULT.
FLOW
KtT
D. CONTRACTOR TO PROVIDE, INSTALL, AND GROUT PIPES. MATCH OUTLET PIPE INVERT WITH OUTLET BAY FLOOR.
Cn
�ax
E. CONTRACTOR TO TAKE APPROPRIATE MEASURES TO PROTECT CARTRIDGES FROM CONSTRUCTION -RELATED EROSION RUNOFF.
SECTION A A
StormFlIter'
D CONTECH WATER QUALITY UNIT, OR EQUAL
13)
80 MM SOLIDER PERIMETER
BANDING COURSE
NO. 8 AGGREGATE
IN OPENINGS
EAGLE BAY AQUA BRIC 4-L
CONCRETE PAVERS
3 g" MIN. THICK
2" NO. 8 AGGREGATE
IRA
4" NO. 57 STONE =
12" NO. 3 STONE _
COMPACTED
SUBGRADE
1�
60 (.
ASPHALT/CONCRETE
PAVING SECTION
FLUSH CURB/EDGE
RESTRAINT
4\j ///,// '\j1.t/// X�, 1 '-COMPACTED
•\<......... SUBGRADE
VDOT 21A
SECTION ABUTTING PAVING GRAVEL
BASE
E PERMEABLE INTERLOCKING PAVERS
13 % SECTION
VDOT 21A
GRAVEL BASE
FILTER FABRIC
6" PERFORATED SDR -35
UNDERDRAIN
(TIE TO STORM DRAINS)
VDOT STD CG -6
NO. 8 AGGREGATE
IN OPENINGS
- EAGLE BAY AQUA BRIC 4-L
CONCRETE PAVERS
3 MIN. THICK
2" NO. 8 AGGREGATE
4" NO. 57 STONE
12" NO. 3 STONE
T
�- COMPACTED SUBGRADE
SECTION ABUTTING CURB
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
Edwards designStudio, PLLC
Landscape Architecture and Site
Planning
4936 Old Boonsboro Road
Lynchburg, VA 24503
tele) 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
tele) 434.531.5544
el alan@alanfranklinpe.com
KEY:
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SCALE: As Shawn
ISSUED: 23 Feburary 20'X7
a
REVISIONS:
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- 02-08-17, APPROVED BY BOS
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1. 04-23-17, CO. ENGR. COMMENTS
SHEET:
SWM Plan: SWM A t
Details
OF �
L
L�-
r-
` 48"0 REINFORCED CONCRETE
r BIO -RETENTION OVERFLOW ,.-
RISER W/ TRASH RACK .f
(SEE DETAIL)
i RIM 570.00
INV. OUT 560.0§,(R -TANK)
r
/ i
- _ SWM/MAINTENA
EASEMENT;TYP
i
72"0 REINFORCED CONCRETE
R -TANK WITH #57 GRAVEL-\
BACKFILL INSTALLED UNDER
BIO -RETENTION BASIN FOR
ADDITINAL SW -STORAGE _
(623 TRIPLE +--MINI UNITS)
8" PVC/HDPE ROOF DRAI
INV. OUT 571.50
L
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Sp
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3:1 BASIN SEED MIX (S1) '
572 BLOCK RETAINING 2411 FLARED END _
' SD
WALL SECTION-�
�,. F1
(SEE SITE PLAN) INV, OUT 571.50
A BIO -RETENTION BASIN PLAN VIEW
Of %A„nC CAAQANIVRACAiT — .,, _ ,,..I , IT,,..,.. __ � 14 % SCALE: 111 = 10'
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:
Label_, -Scientific Name CommonName Quantity Caliper; Height Root :Comments
CL Calycanthus floridus 'Diana' Diana Common Sw eatshrub 24 3 G Dense form; healthy color; uniform branching; 4'0.C.
CP ;Cephalanthus occidentalis Buttonbush 8 3 G Dense form; healthy color uniform branching 4' O.C.
-
CS :Cornus sencea Red -osier Dogw ood 9 3 G Dense form; healthy color; uniform branching, 4' O.C.
_ ... _
MT Nletasequoia glyptostroboides Dawn Redwood 3 2-2.5” B&B Straight trunk; branching begins at 3'; balanced head
S1 ,Seed Seed 3,000 seed (s.f.) Earnst Basin Mix
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
BIO FILTER BOTTOM
\ 1
COMPACTED FILL/ sof* L`
1X\ WRAP TANK ACF
'/fi LSI
FABRIC MONOFILAMENT
8 OZ NON -WOVEN
GEOTEXTILE FABRIC \
2' MIN.
#57 STONE
AROUND
PERIMETER OF
TANK
810-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 #8 STONE
CHOKER LAYER
10" OF #57 STONE
(THOUROUGHLY WASHED)
R -TANK MINI
59.06"
R -TANK TRIPLE
f 3"
COMPACTED SUB -GRADE
D � BIO -RETENTION BASIN SECTION
14 SCALE: N.T.S.
CONCRETE BASE � 4"F JVhLC. n. 1 —0 , V . I —4.j CONCRETE BASE
CONCRETE BASE
C BIO -RETENTION BASIN SECTION B
�14)SCALE: H:111=5'; V:1 "=2.5'
U
IT
VVl11 INIAL
BASE
E BIO -RETENTION BASIN RISER
1SCALE: N.T.S.
WR -12 PROVIDE MINIMUM OF V OF
TO 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
NOTE
UP TO 1' '`/
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-005
N.T.S.
Edwards designStudio, PLLC
Landscape Architecture and Site
Planning
4936 Old Boonsboro Road
Lynchburg, VA 24503
tele) 434.531.7507
e) steve@edwardsdesignstudio.com
www.edwardsdesignstudio.com
ALAN G. FRANKLIN, P.E. LLC
Civil and Site Planning Engineering
427 Cranberry Lane, Crozet, VA 22932
tele) 434.531.5544
el alan@alanfranklinpe.com
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PROPOSED & EXISTING CHANNEL DOWNSTREAM OF STORM 'G'
SCALE H: 1"=50' V: I"= 10'
550
540
530
520
510
500
TIE TO EXISTING GRADE
8'
KEY IN FABRIC, TYP.
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SECTION
C
15
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 RIVERSTONE APPEARANCE PREFERRED)
- SEE THE PLAN FOR LIMITS
TYPICAL DETAIL
N.T.S.
PARKING LOT
EXTEND CLASS Al RIP RAP
TO CURB CUTS OR PIPE
OUTLETS, TYP.
TYPICAL BIO -FILTER
SECTION
8.1. Biu-Ret.eution Construction ,Sequence
Construction Stage ESS Controls, Micro-bloretention and small-scale bioretention areas should
be fully'
protected 1�y gilt. fence or` corlstrtrct.ion tcncing particularly if they will rely on
infiltration (r.e., have no underdrains). Ideally, bioretention should remain outside the limit of
disturbance daring constnaction to prevent soil compaction by hea.3v` equipment. Biorc.ent.iora
basin locations may be used as small sedir7ter7t craps or basins during construction, However,
these must be accompanied by boles and graphic details on the E&S plan specifying that (1) the
mat:imutn excavation depth at the construction :Mage 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 sedirncnt c{:9ntrol practice to a
permanent bioretention facility, including dewatering, cleanout and sta.hilization.
8.2 Bioretention
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 begin after the entire contributing
drainage area has been stabilized with vegetation. It may be necessary to block certain curb or
other inlets while the bioretention area is being constructed. The proposed site should be checked
for existing utilities prior to any excavation.
Step 2. The designer and the installer should have a preconstr-uction 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 preconstnrction 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 S. 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 6. It may be necessary to rip the bottom soils to a depth of 6 to 12 inches to promote greater
infiltration.
Step 7. Place geotextile fabric on the sides of the bioretention area with a 6 -inch overlap on the
sides. If a stone storage layer will be used, place the appropriate depth of #5'7 stone on the
bottom, install the perforated underdrain pipe, pack #57 stone to 3 inches above the underdrain
pipe, and add 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 of #57
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
b for etentton area is achie�r ed. Wait a few v clay s to check for settlement, and add additional rrredaa,
as needed, to achieve the design elevation. 1
Step 9.Prepare planting holes for any trees and shrubs, install the vegetation, and water
accordingly. Install any temporary irrigation.
Step Ifl. Place the surface cover in both cells (mulch, river stone or turd), depending on the.
design. If coir or jute matting will be used in lieu of mulch, the matting will need to be installed
prior to planting (Stela 9), and holes or slits will have to be cut. in the matting to install the plants.
`ep 11. Install the plant materials as shown in the landscaping plui, andd water there during
eeks of no rain for the first two months,.
Step ly. Conduct the final constr action inspection (see Section 9.2'). Then log the UPS
coordinates for each bioretention facility and submit them for entry into the local maintenance
tracking database.
Suggested Annual Maintenance Activities for Bioretention and Dry Swa?e
•
Mcwinq of grass filter strips and bicretention turf cover 4 times a year
•
Spot weeding, erosion repair, trash removal, and mulch raking Tvkeice during grogkiing season
* Add reinforcement planting to maintain desired the vegetation
density As needed
*
Remove invasive plants iising recommended control methods
* Stabilize the contribut r drainage area to prevent erosion
• Spring inspection and cleanup
• Supplement mulch to maintain a 3 inch layer Annually
* Prurie trees and shrubs:
• Remove sediment in re -treatment cells and inflow points Once every 2 to 3 years
*
Replace the mulch layer Evens 3 }rears
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.
BIO -RETENTION BASIN NOTES
INSTALLATION, INSPECTION, & MAINTENANCE
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
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