HomeMy WebLinkAboutWPO201600050 Plan - VSMP WPO VSMP 2017-06-13GENERAL NOTES
OWNER:
032GO-00-00-00100 032EO-00-00-00200
Sheet Title
WOODBRIAR ASSOCIATES RAY BEARD
COVER
PO BOX 5548 2073 CYPRESS DRIVE
EXISTING CONDITIONS
CHARLOTTESVILLE, VA 22905 CHARLOTTESVILLE, VA 22911
ENGINEER:
COLLINS ENGINEERING
STORMWATER MANAGEMENT DETAILS
200 GARRETT STREET, SUITE K
EROSION & SEDIMENT CONTROL NARRATIVE
CHARLOTTESVILLE, VA 22902
EROSION & SEDIMENT CONTROL PLAN
434.293.3719
SURVEYOR:
LINCOLN SURVEYING
EC -3A DITCH
632 BERKMAR CIRCLE
CURB TIB DENOTES TOP OF
CHARLOTTESVILLE, VA 22901
DEPTH OF EC -3A DITCH
434.974,1417
SURVEYOR:
BOUNDARY OF THE SITE WAS PROVIDED BY LINCOLN SURVEYING IN FEBRUARY,
DEPTH OF EC -2 DITCH
2013, TOPOGRAPHY PROVIDED BY THE ENGINEERING GROUPE FROM AERIAL FLOWN
{
TOPO IN JANUARY, 2007. TOPOGRAPHY SURVEY UPDATED IN DECEMBER 2015, AND
I
FIELD VERIFIED IN DECEMBER, 2015.
TAX MAP PARCEL:
T.M.P. 32G-1 (D.B. 1556/PG. 97) (PORTION OF)
TOTAL ACREAGE:
19,87 ACRES
ZONING:
PRD (ZMA 1991-00013, ZMA 1995-00005, ZMA 1995-00020, ZMA 2004-00014,
AND ZMA 2005-00009) WITH PROFFERS AND ENTRANCE CORRIDOR
USE:
PRIMARY RECREATION AREA FOR BRIARWOOD DEVELOPMENT
DENSITY:
NOT APPLICABLE - OPEN SPACE/RECREATIONAL FACILITY
OPEN SPACE:
17.5+/- ACRES
SETBACKS:
FRONT 20 FEET MINIMUM
SIDE 6 FEET MINIMUM
REAR 5 FEET MINIMUM
BUILDING HEIGHT:
35 FEET MAXIMUM
STREETS:
CURB AND GUTTER, PUBLIC STREETS
EXISTING CONDITIONS: SITE IS PREDOMINATELY OPEN GRASS AREA WITH SOME EXISTING TREES AND
VEGETATION.
UTILITIES:
SITE WILL BE SERVED BY PUBLIC WATER AND SEWER
FLOODPLAIN:
100 -YEAR FLOODPLAIN EXISTS WITHIN THE LIMITS OF THE SUBDIVISION PLAT,
PER FEMA MAP #510006 PANEL 145 OF 575 (DATED FEBRUARY 4, 2005)
STREAM BUFFERS:
STREAM BUFFERS EXIST WITHIN THE LIMITS OF THE SUBDIVISION PLAT.
•
SEE EXISTING CONDITIONS SHEET FOR LOCATION.
DATUM:
NAD83
OPEN SPACE:
17.5 ACRES (88% OF TOTAL AREA)
RECREATIONAL AREA:
NEIGHBORHOOD PARK - 17.5 AC.
LOTS:
NOT APPLICABLE
CRITICAL SLOPES:
EXISTING PRESERVED AND MANAGED STEEP SLOPES ARE SHOWN AND
f
LABELED ON THE PLAN SHEET.
PARKING:
REQUIREMENTS
BASEBALL/MULTI-PURPOSE FIELD: 24 SPACES (20 SPACES - BASEBALL
OR 24 SPACES - SOCCER)
BASKETBALL COURTS: 4 SPACES (2 SPACES PER BASKET)
PLAYGROUND: 16 SPACES (1 SPACE PER 125 SF OF ACTIVE RECREATION)
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TOTAL SPACES REQUIRED: 44 SPACES
REDUCTION
TOTAL NUMBER OF HOMES WITHIN BRIARWOOD: 663 HOMES
NUMBER OF HOMES WITHIN % MILE OF PARK: 335 HOMES
o
PARKING REDUCTION PERCENTAGE: 335 HOMES/663 HOMES x 100= 50%
OVERALL PARKING REQUIRED (WITH PARKING REDUCTION): 22 SPACES
PARKING SPACES PROPOSED: 24 SPACES (INCLUDING 2 HANDICAP SPACES)
PHASING:
NO PHASING IS PROPOSED WITH THIS PLAN
LIGHTING:
NO STREET LIGHTING IS PROPOSED,
LANDSCAPING:
LANDSCAPING WILL BE PROVIDED WITH THE FINAL SITE PLAN & COMPLY WITH
SECTION 32.7.9 OF THE ZONING ORDINANCE, WHICH WILL INCLUDE STREET
TREES ALONG THE ROADWAY AND PARKING LOT TREES.
RETAINING WALLS:
RETAINING WALLS ARE NOT PROPOSED,
SIGNAGE:
NO SIGNAGE IS CURRENTLY PROPOSED. ANY SIGNAGE WILL BE INCLUDED WITH
0
THE FINAL SITE PLAN OR UNDER SEPARATE APPLICATION,
WATERSHED:
NORTH FORK RIVANNA (ABOVE WATER INTAKE)
STREET TREES:
STREET TREES SHALL BE PROVIDED ALONG ALL PUBLIC ROADS IN ACCORDANCE
WITH COUNTY REQUIREMENTS.
TRASH COLLECTION: TRASH RECEPTACLES SHALL BE PROPOSED WITHIN THE PARK, THE BRIARWOOD
HOA SHALL HAVE THE TRASH RECEPTACLES SERVICED AT A MINIMUM ONCE A
WEEK WITH THE NEIGHBORHOOD TRASH COLLECTION.
BUILDING SITES:
NOT APPLICABLE - OPEN SPACE
IMPERVIOUS AREAS:
ROADS/PARKING LOT 0.38 AC.
SIDEWALKS/TRAIL 0.50 AC.
RECREATIONAL FACILITIES 0.24 AC.
TOTAL 1.12 AC.
TRAFFIC CALCULATION: TRIP GENERATION BASED ON ITE TRIP GENERATION MANUAL (8TH EDITION)
COUNTY PARK (CODE 412).
ADT: 45 VPD (22.5 ENTER/22.5 EXIT)
AM PEAK: 2 VPH (1 ENTER/:L EXIT)
PM PEAK: 2 VPH (1 ENTER/1 EXIT)
VSMP PLAN
SDP 2016-00045
RIO MAGISTERIAL DISTRICT
ALBEIVIARLE c I
• VIRGINIA
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SHEET LAYOUT
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CHARLOTTESVILLE, VA 22902
434.293-3719
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Sheet List Table
Sheet dumber
Sheet Title
1
COVER
2
EXISTING CONDITIONS
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STORMWATER MANAGEMENT DETAILS
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EROSION & SEDIMENT CONTROL NARRATIVE
6
EROSION & SEDIMENT CONTROL PLAN
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EROSION & SEDIMENT CONTROL NOTES & DETAILS
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434.293-3719
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Sheet List Table
Sheet dumber
Sheet Title
1
COVER
2
EXISTING CONDITIONS
3
STORMWATER MANAGEMENT PLAN
4
STORMWATER MANAGEMENT DETAILS
5
EROSION & SEDIMENT CONTROL NARRATIVE
6
EROSION & SEDIMENT CONTROL PLAN
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EROSION & SEDIMENT CONTROL NOTES & DETAILS
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DROP INLET & STRUCTURE NO.
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APPROVED
by the Albemarle County
Community Development Department
Date 1:/t 3�j
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' -- i �� — ; .._ _- �< �.' _ STORMWATER MANAGEMENT NARRATIVE:
PRE -DEVELOPMENT SVM PI -ISN: Jti ��;- - v� ' ` �G' THE PROPOSED PLAN PROVIDES STORMWATER TREATMENT FOR THE CONSTRUCTION OF BRIARWOOD's PRIMARY RECREATION
SCALE i"=8o'-
_._ \ \ AREA
-= �.. -- <<•-`.............;.:: STORMWATER MANAGEMENT STANDPOINT. THE SUBMITTAL PACKAGE DOCUMENTS ASSOCIATED W. THIS VSMP PLAN ADHERES TO PART IIB ITH THISENTS 4?LLANOM ASHOW
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:.;;:::::;,:•.;::.;;:;.::::... _ .: _ 1„ }t _._ r a.._�_ '/ ; Y~: a THROUGH THE BEST MANAGEMENT PRACTICE OF OPEN SPACE PRESERVATION. THIS
-c- r ..............._. ,.:...._..:.........:..............- � � --- — � � __ � __! � � WATER QUALITY COMPLIANCE BEING MET T OUG
' ' " -" ..- ALSO COMPLIES WITH PART iiB COMPLIANCE BY THE ATTENUATION OF FLOWS IN THE DETENTION BASIN. PLEASE SEE THE
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. -= — "-1 ATTACHED STORMWATER MANAGEMENT CALCULATIONS PACKET FOR FULL DETAILS OF THE PLAN's COMPLIANCE.
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SECTION A-9: TYPICAL GRATMIC.0 DIESA S
—Iliomogerwous fill
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TYPICAL H0M0QFNLE,0jj$
EMBANKMENT
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WATERSHED SUMMARY
Pre -Development
Post -Development
1 -year Now, 2 -year N
Flow, 10 -year
1 -year Flow, 2 -'year Flow, 10 -year
CN Area ac.
cfs cfs Flow, cfs
CN Area ac.
cfs cfs Flow, cfs
57.9 12.54 5.74 7.03 24.39
64.7 12.54 0.23 1.04 18,43
EMBANKMENT NOTES:
AFTER AN INVESTIGATION OF THE SITE's SOILS, SITE VISITS, AN ANALYSIS OF THE SURVEYED TOPOGRAPHY
AND AN EXAMINATION OF VA DEQ APPENDIX A: EARTHEN EMBANKMENT (REQUIREMENTS vs.
RECOMMENDATIONS), THE APPLICANT HAS PROVIDED A COMPREHENSIVE EMBANKMENT DESIGN THAT DOES
NOT NEED A GEOTECHNICAL STUDY AT THIS TIME. SUCH IS THE CASE DUE TO THE PRECAUTIONARY
EMBANKMENT DESIGNS PROPOSED. A SUMMARY OF THE EMBANKMENT DESIGN REQUIREMENTS ARE LISTED
BELOW, MANDATING THE CONTRACTOR MEET THESE REQUIREMENTS ATA MINIMUM.
THE EMBANKMENTS SHALL HAVE A COMPACTED CLAY CORE WITH A CUTOFF TRENCH & BE IN ACCORDANCE
WITH THE DETAILS SHOWN ON THIS SHEET. BERMS AND SPILLWAYS SHALL BE STABILIZED WITH EC -3 MATTING
& THE REMAINING DISTURBED SLOPES SHALL BE STABILIZED WITH EC -2 MATTING. ALL BERM FILL MATERIAL
SHALL CONSIST OF ML, CL, SC OR GC SOILS & BE FREE OF WOOD, ROOTS, ROCKS OR ANY OTHER NON
COMPACTING SOIL. COMPACTED FILL SHALL BE PROCTOR MAXIMUM DRY DENSITY ATM D698 AND HAVE A
MINIMUM OF 95% OF MAXIMUM DRY DENSITY AND 2% OF OPTIMUM MOISTURE CONTENT. ALL FILL
MATERIAL AND CONSTRUCTION SHALL BE APPROVED BY AN ONSITE GEOTECHNICAL ENGINEER PRESENT
DURING THE CONSTRUCTION OF THE EMBANKMENTS AND FILL AREAS.
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PROPOSED 03o" HDPE STANDPIPE w/TRASHRACKS
�R cunt I cFRVF AS THF RISER STRUCTURE. RISER PROPOSED 10' WIDE TOP OF 385
0+50 1+00 1+50 2+00 2+50
I FACILITY BASIL
PROPOSED BASIN SPILLWAY SIDE SLOPES SHALL BE 4:1
OR FLATTER TO PROVIDE A SMOOTH VEHICULAR
TRANSITION ALONG THE ACCESS ROAD & TO PROTECT
385 THE GRASS LI�ED SPILLWAY. 385
PROPOSED
{
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wJ,INVERT''LEV.=378aoo.
i FLOOR(
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I FACILITY BASIL
PROPOSED BASIN SPILLWAY SIDE SLOPES SHALL BE 4:1
OR FLATTER TO PROVIDE A SMOOTH VEHICULAR
TRANSITION ALONG THE ACCESS ROAD & TO PROTECT
385 THE GRASS LI�ED SPILLWAY. 385
� i !
-PROPOSED 6o' WIDE GRASS
LINED EMERGENCY
SPILLWAY CREST
ELEVATION=380.50'
(1a' WIDE TOP OF DAM
ELEV. = 382.00')
I
SWMV, FACILITY SPILLWAY-',
16�;Z01
-CONTRACTOR SHALL INSTALL
THE EMBANKMENT IN
ACCORDANCE w/ THE
DETAILS &
NOTES SHOWN
ON THE PREVIOUS SHEET.
SWM BASIN NOTES:
1. SEE DETAIL ON THIS SHEET FOR RISER TRASHRACK, OR
EQUIVALENT.
2. SEE THE NOTES AND DETAIL ON THE PREVIOUS SHEET FOR
EMBANKMENT DESIGN REQUIREMENTS.
_NTS.
3. STATE APPROVED TRASH RACKS SHALL BE INSTALLED ON
ALL ORIFICE OPENINGS. SEE DETAIL ON THE PREVIOUS SHEET
FOR LOW -FLOW ORIFICE TRASHRACK, OR EQUIVALENT.
4. A CONCRETE FOUNDATION SHALL BE INSTALLED ON THE
RISER, AS SHOWN, AND IT SHALL MEET THE MINIMUM
SPECIFICATIONS SET FORTH IN THE VESCH SPEC. #3.14.
111=5'(V)
1"=5o' (H)
'DETENTION BASIN CONSTRUCTION NOTES:
FACILITY PLANTING SPECIFICATIONS:
1. THE DETENTION BASIN SHALL HAVE TURF GROUND COVER, SUCH AS GRASS, MULCH OR SOME OTHER FORM OF A VEGETATIVE GROUNDCOVER. LANDSCAPING
BEYOND THIS IS OPTIONAL AND IS NOT REQUIRED.
2. THE PROPOSED SIDE SLOPES OF THE BASIN SHALL BE A MAXIMUM OF 2:1 TO REDUCE THE RISK OF EROSION. THE PROPOSED FLOOR SLOPES SHALL BE GRADED
TO PROVIDE POSITIVE DRAINAGE AT ALL TIMES TO THE RISER STRUCTURES.
3. WOODY VEGETATION SHALL NOT BE PLANTED OR ALLOWED TO GROW WITHIN 15 FEET OF THE TOE OF THE EMBANKMENT NOR WITHIN 25 FEET OF THE
PRINCIPAL SPILLWAY STRUCTURE.
4. A VEGETATED BUFFER SHALL BE PROVIDED THAT EXTENDS AT LEAST 25 FEET OUTWARD FROM THE BASIN TOP OF DAM ELEVATION. PERMANENT
0 T N PERM N STRUCTURES
(E.G., BUILDINGS, SHEDS, etc.) SHOULD NOT BE CONSTRUCTED WITHIN THE BUFFER AREA. EXISTING TREES SHALL BE PRESERVED IN THE BUFFER AREA DURING
CONSTRUCTION IF AT ALL POSSIBLE.
!i. THE SOILS IN THE STORMWATER BUFFER AREA ARE OFTEN SEVERELY COMPACTED DURING THE CONSTRUCTION PROCESS, TO ENSURE STABILITY THE DENSITY
OF THESE COMPACTED SOILS CAN BE SO GREAT THAT IT EFFECTIVELY PREVENTS ROOT PENETRATION AND, THEREFORE, MAY LEAD TO PREMATURE MORTALITY
OR LOSS OF VIGOR. AS A RULE OF THUMB, PLANTING HOLES SHOULD BE THREE TIMES DEEPER AND WIDER THAN THE DIAMETER OF THE ROOTBALL FOR
BALL -AND -BURLAP STOCK, AND FIVE TIMES DEEPER AND WIDER FOR CONTAINER -GROWN STOCK.
(i. AVOID SPECIES THAT REQUIRE FULL SHADE, OR ARE PRONE TO WIND DAMAGE. EXTRA MULCHING AROUND THE BASE OF TREES AND SHRUBS IS STRONGLY
RECOMMENDED AS A MEANS OF CONSERVING MOISTURE AND SUPPRESSING WEEDS.
CONTRACTOR REQUIREMENTS:
:!. THE CONTRACTOR SHALL BE RESPONSIBLE FOR LAYOUT OF ALL WORK COVERED UNDER THESE PLANS.
>_. LANDSCAPE CONTRACTOR SHALL REFER TO THE STANDARDIZED LANDSCAPE SPECIFICATIONS FOR THE STATE OF VIRGINIA FOR ADDITIONAL INFORMATION.
THE CONTRACTOR SHALL ABIDE BY ITS CONTENTS; HOWEVER ANY NOTES OR SPECIFICATIONS ON THE PLANS SHALL SUPERSEDE THOSE OUTLINED IN THE
SPECIFICATIONS MANUAL (COPIES ARE AVAILABLE FOR A FEE FROM THE VIRGINIA CHAPTER OF THE AMERICAN SOCIETY OF LANDSCAPE ARCHITECTS, VIRGINIA
NURSERYMEN'S ASSOCIATION, INC. AND THE VIRGINIA SOCIETY OF LANDSCAPE DESIGNERS).
.3. ALL PLANT MATERIAL SHALL MEET THE MINIMUM SPECIFICATIONS AND STANDARDS DESCRIBED IN THE CURRENT ISSUE OF THE AMERICAN STANDARD FOR
NURSERY STOCK, PUBLISHED BY THE AMERICAN ASSOCIATION OF NURSERYMEN, 1250 STREET, NW, SUITE 500, WASHINGTON, DC 20005.
it. THE CONTRACTOR SHALL VERIFY ALL DIMENSIONS IN THE FIELD AND NOTIFY THE DESIGNER OF ANY VARIANCE FROM THE PLAN.
S. THE LANDSCAPE CONTRACTOR IS RESPONSIBLE FOR VERIFYING THE LOCATION OF ANY ONSITE UTILITIES (CALL MISS UTILITY 1-800-552-7001 BEFORE ANY
EXCAVATION).
6. REFER TO THE APPROVED FINAL SITE PLANS FOR ANY DETAILED SITE INFORMATION.
7, ALL WORK SHALL BE COORDINATED WITH OTHER PARTIES.
13. PLANTS WILL BE PREPARED FOR SHIPMENT IN A MANNER THAT WILL NOT CAUSE DAMAGE TO THE BARK, BUDS, BRANCHES, STEMS, OR OVERALL SHAPE OF
THE STOCK. CONTAINER GROWN PLANTS WILL BE TRANSPORTED IN THE CONTAINERS IN WHICH THEY HAVE GROWN.
9. ALL PLANT MATERIAL, UNLESS OTHERWISE SPECIFIED, SHALL BE UNIFORMLY BRANCHED AND HAVE A VIGOROUS ROOT SYSTEM. PLANT MATERIAL SHALL BE
HEALTHY, VIGOROUS, AND FREE FROM DEFECTS, DECAY, DISEASES, INSECT PEST EGGS, AND ALL FORMS OF INFESTATION. ALL PLANT MATERIAL SHALL BE
FRESH, FREE FROM TRANSPLANT SHOCK OR VISIBLE WILT. PLANTS DEEMED UNHEALTHY WILL BE REJECTED.
10. ALL CONTAINER STOCK SHALL HAVE BEEN PROPAGATED IN A CONTAINER LONG ENOUGH FOR THE ROOT SYSTEM TO HAVE DEVELOPED SUFFICIENTLY TO HOLD
ITS SOIL. CONTAINER STOCK WITH POORLY DEVELOPED ROOT SYSTEMS WILL NOT BE ACCEPTED.
'A. PLANTS NOT INSTALLED ON THE DAY OF ARRIVAL ON SITE SHALL BE STORED AND PROTECTED BY THE CONTAINER. OUTSIDE STORAGE AREAS WILL BE SHADED
AND PROTECTED FROM THE WIND AND SUN. PLANTS STORED ON SITE SHALL BE PROTECTED FROM ANY DRYING AT ALL TIMES BY COVERING THE BALLS OR
ROOTS WITH MOIST SAWDUST, WET BURLAP, WOOD CHIPS, SHREDDED BARK, PEAT MOSS, OR OTHER SIMILAR MULCHING MATERIAL.
:12. THE OWNER RESERVES THE RIGHT TO SUBSTITUTE PLANT MATERIAL TYPE, SIZE AND/OR QUANTITY. ANY SUBSTITUTIONS MUST BE APPROVED BY THE
INSPECTOR INITIALLY, AND THEN THE DESIGNER.
13. MINOR FIELD ADJ USTMENTS MAY BE NECESSARY DUE TO SITE CONDITIONS (EX: ROOTBALL AND UTILITY CONFLICT). MAJOR ADJUSTMENTS MUST BE
APPROVED BY THE DESIGNER.
'i4. NO PLANTING SHALL OCCUR WHEN THE SOIL IS FROZEN.
25. PLANT MATERIAL SHALL BE PLACED IN EXISTING SOIL WITH EACH PLANTING PIT EXCAVATED TO A SIZE SUFFICIENTTO CONTAIN THE ENTIRE ROOT BALL OR
ROOT MASS, WITHOUT CRAMPING ROOT STOCK.
:16. THE CONTRACTOR SHALL MAINTAIN A ONE (1) CALENDAR YEAR 90% CARE AND REPLACEMENT WARRANTY FOR ALL PLANTINGS. THE PERIOD OF CARE AND
REPLACEMENT SHALL BEGIN AFTER INSPECTION AND APPROVAL OF THE COMPLETE INSTALLATION OF ALL PLANTS AND CONTINUE FOR ONE CALENDAR YEAR.
13. THE CONTRACTOR IS RESPONSIBLE FOR REMOVAL AND DISPOSAL OF TRASH AND DEBRIS WITHIN THE LIMITS OF THE PLANTING ON A DAILY BASIS.
1.8. THE CONTRACTOR WILL NOT BE RESPONSIBLE FOR PLANT MATERIAL THAT HAS BEEN DAMAGED BY VANDALISM, FIRE, OR OTHER ACTIVITIES BEYOND THE
CONTRACTOR's CONTROL,
FACILITY CONSTRUCTION
THE DETENTION BASIN MAY SERVE AS A SEDIMENT BASIN AND/OR TRAP DURING PROJECT CONSTRUCTION, IF THIS 15 DONE, THE VOLUME SHALL BE BASED ON
THE MORE STRINGENT SIZING RULE (EROSION AND SEDIMENT CONTROL REQUIREMENTS VS. STORMWATER TREATMENT REQUIREMENTS). INSTALLATION OF
THE PERMANENT RISER SHALL BE INITIATED DURING THE CONSTRUCTION PHASE, AND DESIGN ELEVATIONS SHALL BE SET WITH FINAL CLEANOUT OF THE
SEDIMENT BASIN AND CONVERSION TO THE POST -CONSTRUCTION POND IN MIND. APPROPRIATE PROCEDURES SHALL BE IMPLEMENTED TO PREVENT
DISCHARGE OF TURBULENT WATERS WHEN THE BASIN IS BEING CONVERTED INTO AN DETENTION BASIN.
1 THE DETENTION BASIN SHALL ONLY BE CONSTRUCTED AFTER THE CONTRIBUTING DRAINAGE AREA TO THE POND IS COMPLETELY STABILIZED. IF THE
PROPOSED POND SITE WILL BE USED AS A SEDIMENT TRAP OR BASIN DURING THE CONSTRUCTION PHASE, THEN THE FACILITY WILL BE DEWATERED, DREDGED
AND RE -GRADED TO DESIGN DIMENSIONS AFTER THE ORIGINAL SITE CONSTRUCTION IS COMPLETE.
3. INSTALL E&S CONTROLS PRIOR TO CONSTRUCTION OF THE BASIN, INCLUDING TEMPORARY DE -WATERING DEVICES AND STORMWATER DIVERSION PRACTICES.
ALL AREAS SURROUNDING THE BASIN THAT ARE GRADED OR DENUDED DURING CONSTRUCTION SHALL BE PLANTED WITH TURF GRASS, NATIVE PLANTINGS,
OR OTHER APPROVED METHODS OF SOIL STABILIZATION.
it. CONTRACTOR SHALL EXCAVATE THE CORE TRENCH AND INSTALL THE SPILLWAY PIPE DURING THE ESC PHASE.
5. CONTRACTOR SHALL ALSO INSTALL THE RISER, OUTFLOW STRUCTURE AND/OR THE BARREL(s) DURING THE ESC PHASE TO ENSURE THE TOP INVERT OF THE
OVERFLOW WEIR IS CONSTRUCTED LEVEL AT THE DESIGN ELEVATION.
6. THE CONTRACTOR SHALL THEN CONSTRUCT THE EMBANKMENT AND ANY INTERNAL BERMS IN 8 TO 12 -INCH LIFTS AND COMPACT THE LIFTS WITH
APPROPRIATE EQUIPMENT.
7. UPON COMPLETION OF THE EMBANKMENT GRADING, THE CONTRACTOR SHALL EXCAVATE/GRADE UNTILTHE APPROPRIATE ELEVATION AND DESIRED
CONTOURS ARE ACHIEVED FOR THE BOTTOM AND SIDE SLOPES OF THE BASIN.
8. CONTRACTOR SHALL THEN CONSTRUCT THE EMERGENCY SPILLWAY IN CUT OR STRUCTURALLY STABILIZED SOILS,
9. THE CONTRACTOR SHALL THEN FINISH CONSTRUCTION OF ALL OUTLET STRUCTURES, INCLUDING DOWNSTREAM RIP -RAP APRON PROTECTION.
10. THE CONTRACTOR SHALL NEXT STABILIZE EXPOSED SOILS BY HYDROSEEDING OR SEEDING OVER STRAW,
11. THE CONTRACTOR SHALL THEN INSTALL THE APPROPRIATE BASIN LANDSCAPING IN ACCORDANCE WITH THE APPROVED PLANS.
FACILITY MAINTENANCE:
MAINTENANCE OF THE DETENTION BASIN IS DRIVEN BY ANNUAL INSPECTIONS THAT EVALUATE THE CONDITION AND PERFORMANCE OF THE FACILITIES. DURING
THESE INSPECTIONS THE FOLLOWING TASKS SHALL BE PERFORMED BY THE CONTRACTOR IN THE FIRST YEAR FOLLOWING INSTALLATION, AND THE OWNER
THEREAFTER:
1. MEASURE SEDIMENT ACCUMULATION LEVELS IN THE BASIN.
2. MONITOR THE GROWTH OF THE GROUNDCOVER AND ANY TREES AND SHRUBS PLANTED, AS APPLICABLE. RECORD THE SPECIES AND THEIR APPROXIMATE
COVERAGE, AND NOTE THE PRESENCE OF ANY INVASIVE PLANT SPECIES, AS APPLICABLE.
& INSPECTTHE CONDITION OF STORMWATER INLETS TO THE BASIN FOR MATERIAL DAMAGE, EROSION OR UNDERCUTTING.
4. INSPECTTHE BANKS OF UPSTREAM AND DOWNSTREAM CHANNELS FOR EVIDENCE OF SLOUGHING, ANIMAL BURROWS, BOGGY AREAS, WOODY GROWTH, OR
GULLY EROSION THAT MAY UNDERMINE EMBANKMENT INTEGRITY.
5. INSPECT (BASIN OUTFALL CHANNEL FOR EROSION, UNDERCUTTING, RIP -RAP DISPLACEMENT, WOODY GROWTH, etc.
6. INSPECT CONDITION OF PRINCIPAL SPILLWAY AND RISER FOR EVIDENCE OF SPALLING, JOINT FAILURE, LEAKAGE, CORROSION OR OTHER FAILURES.
7. INSPECT CONDITION OF ALL TRASH RACKS, REVERSE SLOPED PIPES OR FLASHBOARD RISERS FOR EVIDENCE OF CLOGGING, LEAKAGE, DEBRIS ACCUMULATION
OR OTHER FAILURES.
8. INSPECT MAINTENANCE ACCESS TO ENSURE IT IS FREE OF WOODY VEGETATION, AND CHECK TO SEE WHETHER VALVES, MANHOLES AND LOCKS CAN BE
OPENED AND OPERATED.
9. INSPECT INTERNAL AND EXTERNAL SIDE SLOPES OF THE BASIN FOR EVIDENCE OF SPARSE VEGETATIVE COVER, EROSION, OR SLUMPING.
10. OWNER OR CONTRACTOR SHALL MAKE NEEDED REPAIRS IMMEDIATELY.
FACILITY INSPECTION:
MULTIPLE INSPECTIONS ARE CRITICALTO ENSURE THE BASIN(s) ARE PROPERLY CONSTRUCTED. BECAUSE THE TIMING OF THE INSTALLATION IS DICTATED BY THE
CONTRACTOR, THE CONTRACTOR SHALL BE RESPONSIBLE FOR CONTACTING THE ENGINEER AND INSPECTOR PRIOR TO INSTALLATION. MULTIPLE SITE VISITS AND
INSPECTIONS ARE REQUIRED TO BE SCHEDULED BY THE CONTRACTOR WITH THE ENGINEER AND INSPECTOR DURING THE FOLLOWING STAGES OF THE DETENTION
BASIN'S CONSTRUCTION PROCESS:
1. PRE -CONSTRUCTION MEETING
2. INITIAL SITE PREPARATION (INCLUDING INSTALLATION OF PROJECT E&S CONTROLS)
3. EXCAVATION/GRADING (e.g., INTERIM/FINAL ELEVATIONS)
4. EXTENDED DETENTION BASIN INSTALLATION (e.g., INTERIM AND FINAL ELEVATIONS)
5. INSTALLATION OF THE EMBANKMENT, THE RISER/PRIMARY SPILLWAY, AND THE OUTLET STRUCTURE(s).
6. PLANTING PHASE (WITH AN EXPERIENCED LANDSCAPE ARCHITECT PRESENT/DIRECTING)
7. FINAL INSPECTION (DEVELOP A PUNCH LIST FOR FACILITY ACCEPTANCE)
30" Riser
_W_
StormRax-
'ROUND SERIES TRASH RACK
CONCRETe M&NiiO E
STANDARD 60 INCH RACK SHOWN
DIMENSIONS IN INCHES
am
HIYPE-9 %.StPwTUF'.+Y}: PIABtIr.. tilt
cv-,rEc ao-,Ur [v�4% 18a
I r
PROPOSED
QUA -F: ER �,E"Q .
I
j
1 MI I) ; Min OD
GRADE
(
i 1
I
i_36 -
_..._._.._21_Y4
17,117
54
!, 49 57
h80
(-
380
_
6Q 7p
m`.
XISTIN__._..._.__.._._L.._._....._
.
GRADE'
I
;
i I
375
I
1375
W W 0
71,
C7
Co
�-
I w
®
6
ca 0 6
_
J
w Lei.
� i !
-PROPOSED 6o' WIDE GRASS
LINED EMERGENCY
SPILLWAY CREST
ELEVATION=380.50'
(1a' WIDE TOP OF DAM
ELEV. = 382.00')
I
SWMV, FACILITY SPILLWAY-',
16�;Z01
-CONTRACTOR SHALL INSTALL
THE EMBANKMENT IN
ACCORDANCE w/ THE
DETAILS &
NOTES SHOWN
ON THE PREVIOUS SHEET.
SWM BASIN NOTES:
1. SEE DETAIL ON THIS SHEET FOR RISER TRASHRACK, OR
EQUIVALENT.
2. SEE THE NOTES AND DETAIL ON THE PREVIOUS SHEET FOR
EMBANKMENT DESIGN REQUIREMENTS.
_NTS.
3. STATE APPROVED TRASH RACKS SHALL BE INSTALLED ON
ALL ORIFICE OPENINGS. SEE DETAIL ON THE PREVIOUS SHEET
FOR LOW -FLOW ORIFICE TRASHRACK, OR EQUIVALENT.
4. A CONCRETE FOUNDATION SHALL BE INSTALLED ON THE
RISER, AS SHOWN, AND IT SHALL MEET THE MINIMUM
SPECIFICATIONS SET FORTH IN THE VESCH SPEC. #3.14.
111=5'(V)
1"=5o' (H)
'DETENTION BASIN CONSTRUCTION NOTES:
FACILITY PLANTING SPECIFICATIONS:
1. THE DETENTION BASIN SHALL HAVE TURF GROUND COVER, SUCH AS GRASS, MULCH OR SOME OTHER FORM OF A VEGETATIVE GROUNDCOVER. LANDSCAPING
BEYOND THIS IS OPTIONAL AND IS NOT REQUIRED.
2. THE PROPOSED SIDE SLOPES OF THE BASIN SHALL BE A MAXIMUM OF 2:1 TO REDUCE THE RISK OF EROSION. THE PROPOSED FLOOR SLOPES SHALL BE GRADED
TO PROVIDE POSITIVE DRAINAGE AT ALL TIMES TO THE RISER STRUCTURES.
3. WOODY VEGETATION SHALL NOT BE PLANTED OR ALLOWED TO GROW WITHIN 15 FEET OF THE TOE OF THE EMBANKMENT NOR WITHIN 25 FEET OF THE
PRINCIPAL SPILLWAY STRUCTURE.
4. A VEGETATED BUFFER SHALL BE PROVIDED THAT EXTENDS AT LEAST 25 FEET OUTWARD FROM THE BASIN TOP OF DAM ELEVATION. PERMANENT
0 T N PERM N STRUCTURES
(E.G., BUILDINGS, SHEDS, etc.) SHOULD NOT BE CONSTRUCTED WITHIN THE BUFFER AREA. EXISTING TREES SHALL BE PRESERVED IN THE BUFFER AREA DURING
CONSTRUCTION IF AT ALL POSSIBLE.
!i. THE SOILS IN THE STORMWATER BUFFER AREA ARE OFTEN SEVERELY COMPACTED DURING THE CONSTRUCTION PROCESS, TO ENSURE STABILITY THE DENSITY
OF THESE COMPACTED SOILS CAN BE SO GREAT THAT IT EFFECTIVELY PREVENTS ROOT PENETRATION AND, THEREFORE, MAY LEAD TO PREMATURE MORTALITY
OR LOSS OF VIGOR. AS A RULE OF THUMB, PLANTING HOLES SHOULD BE THREE TIMES DEEPER AND WIDER THAN THE DIAMETER OF THE ROOTBALL FOR
BALL -AND -BURLAP STOCK, AND FIVE TIMES DEEPER AND WIDER FOR CONTAINER -GROWN STOCK.
(i. AVOID SPECIES THAT REQUIRE FULL SHADE, OR ARE PRONE TO WIND DAMAGE. EXTRA MULCHING AROUND THE BASE OF TREES AND SHRUBS IS STRONGLY
RECOMMENDED AS A MEANS OF CONSERVING MOISTURE AND SUPPRESSING WEEDS.
CONTRACTOR REQUIREMENTS:
:!. THE CONTRACTOR SHALL BE RESPONSIBLE FOR LAYOUT OF ALL WORK COVERED UNDER THESE PLANS.
>_. LANDSCAPE CONTRACTOR SHALL REFER TO THE STANDARDIZED LANDSCAPE SPECIFICATIONS FOR THE STATE OF VIRGINIA FOR ADDITIONAL INFORMATION.
THE CONTRACTOR SHALL ABIDE BY ITS CONTENTS; HOWEVER ANY NOTES OR SPECIFICATIONS ON THE PLANS SHALL SUPERSEDE THOSE OUTLINED IN THE
SPECIFICATIONS MANUAL (COPIES ARE AVAILABLE FOR A FEE FROM THE VIRGINIA CHAPTER OF THE AMERICAN SOCIETY OF LANDSCAPE ARCHITECTS, VIRGINIA
NURSERYMEN'S ASSOCIATION, INC. AND THE VIRGINIA SOCIETY OF LANDSCAPE DESIGNERS).
.3. ALL PLANT MATERIAL SHALL MEET THE MINIMUM SPECIFICATIONS AND STANDARDS DESCRIBED IN THE CURRENT ISSUE OF THE AMERICAN STANDARD FOR
NURSERY STOCK, PUBLISHED BY THE AMERICAN ASSOCIATION OF NURSERYMEN, 1250 STREET, NW, SUITE 500, WASHINGTON, DC 20005.
it. THE CONTRACTOR SHALL VERIFY ALL DIMENSIONS IN THE FIELD AND NOTIFY THE DESIGNER OF ANY VARIANCE FROM THE PLAN.
S. THE LANDSCAPE CONTRACTOR IS RESPONSIBLE FOR VERIFYING THE LOCATION OF ANY ONSITE UTILITIES (CALL MISS UTILITY 1-800-552-7001 BEFORE ANY
EXCAVATION).
6. REFER TO THE APPROVED FINAL SITE PLANS FOR ANY DETAILED SITE INFORMATION.
7, ALL WORK SHALL BE COORDINATED WITH OTHER PARTIES.
13. PLANTS WILL BE PREPARED FOR SHIPMENT IN A MANNER THAT WILL NOT CAUSE DAMAGE TO THE BARK, BUDS, BRANCHES, STEMS, OR OVERALL SHAPE OF
THE STOCK. CONTAINER GROWN PLANTS WILL BE TRANSPORTED IN THE CONTAINERS IN WHICH THEY HAVE GROWN.
9. ALL PLANT MATERIAL, UNLESS OTHERWISE SPECIFIED, SHALL BE UNIFORMLY BRANCHED AND HAVE A VIGOROUS ROOT SYSTEM. PLANT MATERIAL SHALL BE
HEALTHY, VIGOROUS, AND FREE FROM DEFECTS, DECAY, DISEASES, INSECT PEST EGGS, AND ALL FORMS OF INFESTATION. ALL PLANT MATERIAL SHALL BE
FRESH, FREE FROM TRANSPLANT SHOCK OR VISIBLE WILT. PLANTS DEEMED UNHEALTHY WILL BE REJECTED.
10. ALL CONTAINER STOCK SHALL HAVE BEEN PROPAGATED IN A CONTAINER LONG ENOUGH FOR THE ROOT SYSTEM TO HAVE DEVELOPED SUFFICIENTLY TO HOLD
ITS SOIL. CONTAINER STOCK WITH POORLY DEVELOPED ROOT SYSTEMS WILL NOT BE ACCEPTED.
'A. PLANTS NOT INSTALLED ON THE DAY OF ARRIVAL ON SITE SHALL BE STORED AND PROTECTED BY THE CONTAINER. OUTSIDE STORAGE AREAS WILL BE SHADED
AND PROTECTED FROM THE WIND AND SUN. PLANTS STORED ON SITE SHALL BE PROTECTED FROM ANY DRYING AT ALL TIMES BY COVERING THE BALLS OR
ROOTS WITH MOIST SAWDUST, WET BURLAP, WOOD CHIPS, SHREDDED BARK, PEAT MOSS, OR OTHER SIMILAR MULCHING MATERIAL.
:12. THE OWNER RESERVES THE RIGHT TO SUBSTITUTE PLANT MATERIAL TYPE, SIZE AND/OR QUANTITY. ANY SUBSTITUTIONS MUST BE APPROVED BY THE
INSPECTOR INITIALLY, AND THEN THE DESIGNER.
13. MINOR FIELD ADJ USTMENTS MAY BE NECESSARY DUE TO SITE CONDITIONS (EX: ROOTBALL AND UTILITY CONFLICT). MAJOR ADJUSTMENTS MUST BE
APPROVED BY THE DESIGNER.
'i4. NO PLANTING SHALL OCCUR WHEN THE SOIL IS FROZEN.
25. PLANT MATERIAL SHALL BE PLACED IN EXISTING SOIL WITH EACH PLANTING PIT EXCAVATED TO A SIZE SUFFICIENTTO CONTAIN THE ENTIRE ROOT BALL OR
ROOT MASS, WITHOUT CRAMPING ROOT STOCK.
:16. THE CONTRACTOR SHALL MAINTAIN A ONE (1) CALENDAR YEAR 90% CARE AND REPLACEMENT WARRANTY FOR ALL PLANTINGS. THE PERIOD OF CARE AND
REPLACEMENT SHALL BEGIN AFTER INSPECTION AND APPROVAL OF THE COMPLETE INSTALLATION OF ALL PLANTS AND CONTINUE FOR ONE CALENDAR YEAR.
13. THE CONTRACTOR IS RESPONSIBLE FOR REMOVAL AND DISPOSAL OF TRASH AND DEBRIS WITHIN THE LIMITS OF THE PLANTING ON A DAILY BASIS.
1.8. THE CONTRACTOR WILL NOT BE RESPONSIBLE FOR PLANT MATERIAL THAT HAS BEEN DAMAGED BY VANDALISM, FIRE, OR OTHER ACTIVITIES BEYOND THE
CONTRACTOR's CONTROL,
FACILITY CONSTRUCTION
THE DETENTION BASIN MAY SERVE AS A SEDIMENT BASIN AND/OR TRAP DURING PROJECT CONSTRUCTION, IF THIS 15 DONE, THE VOLUME SHALL BE BASED ON
THE MORE STRINGENT SIZING RULE (EROSION AND SEDIMENT CONTROL REQUIREMENTS VS. STORMWATER TREATMENT REQUIREMENTS). INSTALLATION OF
THE PERMANENT RISER SHALL BE INITIATED DURING THE CONSTRUCTION PHASE, AND DESIGN ELEVATIONS SHALL BE SET WITH FINAL CLEANOUT OF THE
SEDIMENT BASIN AND CONVERSION TO THE POST -CONSTRUCTION POND IN MIND. APPROPRIATE PROCEDURES SHALL BE IMPLEMENTED TO PREVENT
DISCHARGE OF TURBULENT WATERS WHEN THE BASIN IS BEING CONVERTED INTO AN DETENTION BASIN.
1 THE DETENTION BASIN SHALL ONLY BE CONSTRUCTED AFTER THE CONTRIBUTING DRAINAGE AREA TO THE POND IS COMPLETELY STABILIZED. IF THE
PROPOSED POND SITE WILL BE USED AS A SEDIMENT TRAP OR BASIN DURING THE CONSTRUCTION PHASE, THEN THE FACILITY WILL BE DEWATERED, DREDGED
AND RE -GRADED TO DESIGN DIMENSIONS AFTER THE ORIGINAL SITE CONSTRUCTION IS COMPLETE.
3. INSTALL E&S CONTROLS PRIOR TO CONSTRUCTION OF THE BASIN, INCLUDING TEMPORARY DE -WATERING DEVICES AND STORMWATER DIVERSION PRACTICES.
ALL AREAS SURROUNDING THE BASIN THAT ARE GRADED OR DENUDED DURING CONSTRUCTION SHALL BE PLANTED WITH TURF GRASS, NATIVE PLANTINGS,
OR OTHER APPROVED METHODS OF SOIL STABILIZATION.
it. CONTRACTOR SHALL EXCAVATE THE CORE TRENCH AND INSTALL THE SPILLWAY PIPE DURING THE ESC PHASE.
5. CONTRACTOR SHALL ALSO INSTALL THE RISER, OUTFLOW STRUCTURE AND/OR THE BARREL(s) DURING THE ESC PHASE TO ENSURE THE TOP INVERT OF THE
OVERFLOW WEIR IS CONSTRUCTED LEVEL AT THE DESIGN ELEVATION.
6. THE CONTRACTOR SHALL THEN CONSTRUCT THE EMBANKMENT AND ANY INTERNAL BERMS IN 8 TO 12 -INCH LIFTS AND COMPACT THE LIFTS WITH
APPROPRIATE EQUIPMENT.
7. UPON COMPLETION OF THE EMBANKMENT GRADING, THE CONTRACTOR SHALL EXCAVATE/GRADE UNTILTHE APPROPRIATE ELEVATION AND DESIRED
CONTOURS ARE ACHIEVED FOR THE BOTTOM AND SIDE SLOPES OF THE BASIN.
8. CONTRACTOR SHALL THEN CONSTRUCT THE EMERGENCY SPILLWAY IN CUT OR STRUCTURALLY STABILIZED SOILS,
9. THE CONTRACTOR SHALL THEN FINISH CONSTRUCTION OF ALL OUTLET STRUCTURES, INCLUDING DOWNSTREAM RIP -RAP APRON PROTECTION.
10. THE CONTRACTOR SHALL NEXT STABILIZE EXPOSED SOILS BY HYDROSEEDING OR SEEDING OVER STRAW,
11. THE CONTRACTOR SHALL THEN INSTALL THE APPROPRIATE BASIN LANDSCAPING IN ACCORDANCE WITH THE APPROVED PLANS.
FACILITY MAINTENANCE:
MAINTENANCE OF THE DETENTION BASIN IS DRIVEN BY ANNUAL INSPECTIONS THAT EVALUATE THE CONDITION AND PERFORMANCE OF THE FACILITIES. DURING
THESE INSPECTIONS THE FOLLOWING TASKS SHALL BE PERFORMED BY THE CONTRACTOR IN THE FIRST YEAR FOLLOWING INSTALLATION, AND THE OWNER
THEREAFTER:
1. MEASURE SEDIMENT ACCUMULATION LEVELS IN THE BASIN.
2. MONITOR THE GROWTH OF THE GROUNDCOVER AND ANY TREES AND SHRUBS PLANTED, AS APPLICABLE. RECORD THE SPECIES AND THEIR APPROXIMATE
COVERAGE, AND NOTE THE PRESENCE OF ANY INVASIVE PLANT SPECIES, AS APPLICABLE.
& INSPECTTHE CONDITION OF STORMWATER INLETS TO THE BASIN FOR MATERIAL DAMAGE, EROSION OR UNDERCUTTING.
4. INSPECTTHE BANKS OF UPSTREAM AND DOWNSTREAM CHANNELS FOR EVIDENCE OF SLOUGHING, ANIMAL BURROWS, BOGGY AREAS, WOODY GROWTH, OR
GULLY EROSION THAT MAY UNDERMINE EMBANKMENT INTEGRITY.
5. INSPECT (BASIN OUTFALL CHANNEL FOR EROSION, UNDERCUTTING, RIP -RAP DISPLACEMENT, WOODY GROWTH, etc.
6. INSPECT CONDITION OF PRINCIPAL SPILLWAY AND RISER FOR EVIDENCE OF SPALLING, JOINT FAILURE, LEAKAGE, CORROSION OR OTHER FAILURES.
7. INSPECT CONDITION OF ALL TRASH RACKS, REVERSE SLOPED PIPES OR FLASHBOARD RISERS FOR EVIDENCE OF CLOGGING, LEAKAGE, DEBRIS ACCUMULATION
OR OTHER FAILURES.
8. INSPECT MAINTENANCE ACCESS TO ENSURE IT IS FREE OF WOODY VEGETATION, AND CHECK TO SEE WHETHER VALVES, MANHOLES AND LOCKS CAN BE
OPENED AND OPERATED.
9. INSPECT INTERNAL AND EXTERNAL SIDE SLOPES OF THE BASIN FOR EVIDENCE OF SPARSE VEGETATIVE COVER, EROSION, OR SLUMPING.
10. OWNER OR CONTRACTOR SHALL MAKE NEEDED REPAIRS IMMEDIATELY.
FACILITY INSPECTION:
MULTIPLE INSPECTIONS ARE CRITICALTO ENSURE THE BASIN(s) ARE PROPERLY CONSTRUCTED. BECAUSE THE TIMING OF THE INSTALLATION IS DICTATED BY THE
CONTRACTOR, THE CONTRACTOR SHALL BE RESPONSIBLE FOR CONTACTING THE ENGINEER AND INSPECTOR PRIOR TO INSTALLATION. MULTIPLE SITE VISITS AND
INSPECTIONS ARE REQUIRED TO BE SCHEDULED BY THE CONTRACTOR WITH THE ENGINEER AND INSPECTOR DURING THE FOLLOWING STAGES OF THE DETENTION
BASIN'S CONSTRUCTION PROCESS:
1. PRE -CONSTRUCTION MEETING
2. INITIAL SITE PREPARATION (INCLUDING INSTALLATION OF PROJECT E&S CONTROLS)
3. EXCAVATION/GRADING (e.g., INTERIM/FINAL ELEVATIONS)
4. EXTENDED DETENTION BASIN INSTALLATION (e.g., INTERIM AND FINAL ELEVATIONS)
5. INSTALLATION OF THE EMBANKMENT, THE RISER/PRIMARY SPILLWAY, AND THE OUTLET STRUCTURE(s).
6. PLANTING PHASE (WITH AN EXPERIENCED LANDSCAPE ARCHITECT PRESENT/DIRECTING)
7. FINAL INSPECTION (DEVELOP A PUNCH LIST FOR FACILITY ACCEPTANCE)
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GENERAL NOTES
1. THE OWNER/DEVELOPER OF THIS PROPERTY IS:
WOODBRIAR ASSOCIATES
P.O. BOX 5548
CHARLOTTESVILLE, VA 22905
2. THESE PLANS HAVE BEEN PREPARED BY:
COLLINS ENGINEERING, INC
200 GARRETT STREET, SUITE K
CHARLOTTESVILLE, VA 22902
TELEPHONE: (434) 293-3719 FACSIMILE: (434) 293-2813
3. SOURCE OF TOPO & SURVEY: BOUNDARY OF THE SITE WAS PROVIDED BY
LINCOLN SURVEYING IN FEBRUARY, 2013. TOPOGRAPHY PROVIDED BY THE
ENGINEERING GROUPIE FROM AERIAL FLOWN TOPO IN JANUARY, 2007.
TOPOGRAPHY SURVEY UPDATED IN DECEMBER, 2015, AND FIELD -VERIFIED IN
DECEMBER, 2015.
4. ZONING: R-4 RESIDENTIAL
5. TAX MAP AND PARCEL NUMBER:
032GO-00-00-00100
6. USGS DATUM: NAD 83
7. LOCATION/ADDRESS OF PROJECT: ST. IVES ROAD
8. PROJECT AREA: 19.87 ACRES
9. SITE PHASING: NONE.
10. PUBLIC UTILITIES: NO CONNECTIONS PROPOSED WITH THIS PLAN
* COLLINS ENGINEERING SHALL NOT HAVE AUTHORITY OVER CONTRACTOR'S WORK,
SAFETY PRECAUTIONS, SCHEDULES, OR COMPLIANCE WITH LAWS AND
REGULATIONS. WE SHALL NOT ASSUME RESPONSIBILITY FOR ANY
CONSTRUCTION STARTED PRIOR TO PLAN APPROVAL.
14EASURFE #3
STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES SHALL BE IN
ACCORDANCE WITH THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK
STRUCTURAL PRACTICES USED IN THIS SECTION CONSIST OF THE FOLLOWING.
3.01 SAFETY FENCE
A PR07EC77VE BARRIER INSTALLED TO PREVENT ACCESS TO AN EROSION CONTROL
MEASURE. TO PROHIBIT THE UNDESIRABLE USE OF AN EROSION CONTROL MEASURE
BY THE PUBLIC. APPLICABLE TO ANY CONTROL MEASURE OR SERIES OF MEASURES
WHICH CAN BE CONSIDERED UNSAFE BY WRTUIE OF POIEN77AL ACCESS BY 77-1E
PUBLIC.
3.02 CONSTRUCTION ENTRANCE:
A STABILIZED PAVED CONS7RUC77ON ENTRANCE WITH A WASH RACK LOCATED AT
POINTS OF VEHICULAR INGRESS AND EGRESS ON A CONSTRUCTION SITE. TO REDUCE
THE AMOUNT OF MUD 7RANSPORTED ONTO PAVED PUBLIC ROADS BY MOTOR VEHICLES
OR RUNOFF. CONSTRUC77ON ENTRANCES SHALL BE INSTALLED AS SHOWN ON THE
PLANS TO REDUCE THE AMOUNT SEDIMENT 7RANSPORTED ONTO PUBLIC ROADWAYS.
3.05 SILT FENCE.•
A TEMPORARY SEDIMENT BARRIER CONSIS77NG OF A SMTHE77C FILTER FABRIC
STRETCHED ACROSS AND ATTACHED TO SUPPOR77NG POSTS AND ENTRENCHED, TO
INTERCEPT AND DETAIN SMALL AMOUNTS OF SEDIMENT FROM DISTURBED AREAS
DURING CONS 7RUC77ON OPERA77ONS IN ORDER TO PREVENT SEDIMENT FROM LEAVING
7HE SITE, AND TO DECREASE THE VELOCITY OF SHEET FLOWS AND
LOW -TO -MODERATE LEVEL CHANNEL FLOWS THE SILT FENCE BARRIERS SHALL BE
INSTALLED DOWN SLOPE OF AREAS WITH MINIMAL GRADES TO FILTER SEDIMENT LADEN
RUNOFF FROM SHEET FLOW AS INDICATED. THEY SHALL BE INSPECTED IMMEDIATELY
AFTER EACH RAINFALL AND MAINTAINED IN ACCORDANCE WITH THE VIRGINIA EROSION
& SEDIMENT CONTROL HANDBOOK (VESCH).
J.07 STORM DRAIN INLET PROTECT70N:
A SEDIMENT FILTER OR AN EXCAVATED IMPOUNDING AREA AROUND A STORM DRAIN
DROP INLET OR CURB INLET TO PREVENT SEDIMENT FROM ENTERING STORM
DRAINAGE SYSTEMS PRIOR TO PERMANENT STABILIZA77ON OF THE DISTURBED AREA.
INLET PR07ECTION APPLIES WHERE STORM DRAIN INLETS ARE TO BE MADE
OPERA77ONAL BEFORE PERMANENT STABILIZA77ON OF THE CORRESPONDING DISTURBED
DRAINAGE AREA.
3,09 TEMPORARY DIVERSION D1KL:
A TEMPORARY RIDGE OF COMPACTED SOIL CONSTRUCTED AT THE TOP OR BASE OF A
DRAINAGE
RT STORM RUNOFF FROM
UPSLOPE D
DISTURBED AREA
TO DIVERT SLOPING DIS7U
AREAS AWAY FROM UNPROTECTED DISTURBED AREAS AND SLOPES TO A STABILIZED
OUTLET. TO DIVERT SEDIMENT -LADEN RUNOFF FROM A DISTURBED AREA TO A
SEDIMENT -TRAPPING FACILITY SUCH AS A SEDIMENT TRAP OR SEDIMENT BASIN. USE
WHEREVER STORMWATER RUNOFF MUST BE TEMPORARILY DIVERTED TO PROTECT
DISTURBED AREAS AND SLOPES OR RETAIN SEDIMENT ON S17E DURING CONSTRUCTION.
7HESE STRUCTURES GENERALLY HAVE A LIFE EXPECTANCY OF 18 MONTHS OR LESS,
WHICH CAN BE PROLONGED WITH PROPER MAINTENANCE
3.14 TEMPORARY SEDIMENT BASIN:
A TEMPORARY BARRIER OR DAM WITH A CONTROLLED STORMWATER RELEASE
STRUCTURE FORMED BY CONSTRUC77NG AN EMBANKMENT OF COMPACTED SOIL ACROSS
A DRAINAGEWAY TO DETAIL SEDIMENT= -LADEN RUNOFF FROM DISTURBED AREAS IN
"WET" AND `DRY" STORAGE LONG ENOUGH FOR THE MAJORITY OF THE SEDIMENT TO
SETTLE OUT APPLIES BELOW DISTURBED AREAS WHERE THE TOTAL CONTRIBU77NG
DRAINAGE AREA IS EQUAL TO OR GREATER THAN THREE ACRES. THERE MUST BE
SUFFICIENT SPACE AND APPROPRIATE TOPOGRAPHY FOR THE CONSTRUC77ON OF A
TEMPORARY IMPOUNDMENT
3.18 OUTLET PROTECTION:
STRUCTURALLY LINED APRONS OR OTHER ACCEPTABLE ENERGY DISSIPATING DEVICES
PLACED AT THE OUTLETS OF PIPES OR PAVED CHANNEL SECTIONS. TO PREVENT
SCOUR AT STORMWATER OUTLETS, TO PROTECT THE OUTLET STRUCTURE, AND TO
MINIMIZE THE P07ENTIAL FOR DOWNSTREAM EROSION BY REDUCING THE VELOCITY AND
ENERGY OF CONCENTRATED STORMWATER FLOWS. APPLICABLE TO THE OUTLETS OF
ALL PIPES AND ENGINEERED CHANNEL SECTIONS
,319 RIPRAP:
A PERMANENT, EROSION -RESISTANT GROUND COVER OF LARGE, LOOSE, ANGULAR
STONE W17H FILTER FABRIC OR GRANULAR UNDERLINING. TO PROTECT 7HE SOIL FROM
THE EROSIVE FORCES OF CONCENTRATED RUNOFF, SLOW THE VELOCITY OF
CONCENTRATED RUNOFF WHILE ENHANCING THE P07EN77AL FOR INFILTRATION, AND TO
STABILIZE SLOPES WITH SEEPAGE PROBLEMS, ANDIOR NON -COHESIVE SOILS. USE
WHEREVER SOIL AND WATER INTERFACE AND THE SOIL CONDI7TONS, WATER
TURBULENCE AND VELOCITY, EXPECTED VEGETATIVE COVER, ETC., ARE SUCH THAT THE
SOIL MAY ERODE UNDER THE DESIGN FLOW CONDITIONS
3.31 TEMPORARY SEEDING. -
THE ESTABLISHMENT OF A TEMPORARY VEGETATIVE COVER ON DISTURBED AREAS BY
SEEDING WITH APPROPRIATE RAPIDLY GROWING ANNUAL PLANTS. TO REDUCE EROSION
AND SEDIMENTATION BY STABILIZING DIS77JRBED AREAS THAT WILL NOT BE BROUGHT
TO FINAL GRADE FOR A PERIOD OF MORE THAN 30 DAYS TO REDUCE DAMAGE FROM
SEDIMENT AND RUNOFF TO DOWNSTREAM OR OFF-SITE AREAS, AND TO PROVIDE
PROTEC77ON TO BARE SOILS EXPOSED DURING CONSTRUC77ON UNTIL PERMANENT
VEGETA77ON OR OTHER EROSION CONTROL MEASURES CAN BE ESTABLISHED.
J.32 PERMANENT STABILIZATION
THE ESTABLISHMENT OF PERENNIAL VEGETA77VE COVER ON DISTURBED AREAS BY
PLANTING SEED. TO REDUCE EROSION AND DECREASE SEDIMENT YIELD FROM
DISTURBED AREAS TO PERMANENTLY STABILIZE DISTURBED AREAS IN A MANNER
THAT IS ECONOMICAL, ADAPTABLE TO SITE CONDITIONS, AND ALLOWS SELEC77ON OF
THE MOST APPROPRIATE PLANT MATERIALS. TO IMPROVE WILDLIFE HABITAT. TO
ENHANCE NATURAL BEAUTY. UPON COMPLETION OF CONSTRUC77ON AC77W77ES, ALL
AREAS WILL RECEIVE A PERMANENT VEGETATIVE COVER.
3.38 TREE PRESERVA770N AND PROT-0701V.-
PRO7EC77ON OF DESIRABLE TREES FROM MECHANICAL OR OTHER INJURY DURING LAND
DISTURBING AND CONS7RUCTTON ACTIVITY. TO ENSURE THE SURVIVAL OF DESIRABLE
TREES WHERE THEY WILL BE EFFEC77VE FOR EROSION AND SEDIMENT CONTROL,
WATERSHED PROTECTION, LANDSCAPE BEAU77FICA77ON, DUST AND POLLUTION CONTROL,
NOISE REDUCTION, SHADE AND OTHER ENVIRONMENTAL BENEFITS WHILE THE LAND IS
BEING CONVERTED FROM FOREST TO URBAN -TYPE USES. APPLIES IN 7REE-INHABI7ED
AREAS SUBJECT TO LAND DISTURBING ACTIVITIES.
3.39 DUST CONTROL:
REDUCING SURFACE AND AIR MOVEMENT OF DUST DURING LAND DISTURBING,
DEMOLITION AND CONSTRUCTION ACTIVITIES. 77VITIES. TO
PREVENT SURFACE
AND AIR
MOVEMENT OF DUST FROM EXPOSED SOIL SURFACES AND REDUCE THE PRESENCE OF
AIRBORNE SUBSTANCES WHICH MAY PRESENT HEALTH HAZARDS, TRAFFIC SAFETY
PROBLEMS OR HARM ANIMAL OR PLANT LIFE. DUST CON7ROL MEASURES SHALL BE
EMPLOYED TO PREVENT SURFACE AND AIR MOVEMENT OF DUST DURING
C0NS77?UC77ON. MEASURES EMPLOYED SHALL BE IN ACCORDANCE WITH THE VESCH.
EROSION CONTROL .NOTES
ES -1: UNLESS OTHERWISE INDICATED, ALL VEGETA77VE AND STRUCTURAL EROSION
AND SEDIMENT CONTROL PRACTICES 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
REGULA TIONS.
ES -2: 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.
ES -3: ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR
TO OR AS THE FIRST STEP IN CLEARING.
ES -4: A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL
BE MAINTAINED ON THE Sl TE A T ALL TIMES
ES -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.
ES -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.
ES -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.
ES -8: DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN
APPROVED WATER FILTERING DEVICEE,
ES -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
r CONTROL DEVICES SHALrLBE MADE IMMEDIATELY.
CONTROL EROSIONONrROL .NO 1 7rES
1. THE PLAN APPROMNG 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:OOAM TO 9:OOPM.
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.
REMOVE OR CONVERT
DEVELOPER SHALL RESERVE THE RIGHT TO INSTALL, MAINTAIN
16 THE,
L
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 RYEGRASS 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 OF A 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 RYEGRASS 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 DYKES 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.
21. THIS PLAN SHALL BE VOID IF THE OWNER DOES NOT OBTAIN A PERMIT WITHIN 1 YEAR OF
THE DATE OF APPROVAL. (WATER PROTECTION ORDINANCE SECTION 17-204G.)
22. PERMANENT VEGETATION SHALL BE INSTALLED ON ALL DENUDED AREAS WITHIN NINE (9)
MONTHS AFTER THE DATE THE LAND DISTURBING ACTIVITY COMMENCED. (WATER
PROTECTION ORDINANCE SECTION 17-207B)
SOIL DESCRIPTION
-14D- CHESTER LOAM-1.5%TO 25% SLOPES.
SOI L CONSISTS OF VERY DEEP,, MIXED, WELL -DRAINED SOILS ON UPLANDS.
SATURATED HYDRAULIC CONDUCTIVITY IS MODERATELY HIGH TO HIGH. FORMED IN
MATERIALS WEATHERED FROM MICACEOUS SCHIST. RUNOFF IS MEDIUM.
sgC- CULLEN LOAM -7%TO 15% SLOPES.
SOUL IS VERY DEEP, VERY FINE, AND WELL -DRAINED WITH MODERATE PERMEABILITY.
FORMED IN RESIDUUM FROM MIXED MARC AND FELSIC CRYSTALLINE ROCKS. SOIL
LOCATED ON UPLAND RIDGETOPS AND SIDE SLOPES OF THE PIEDMONT PLATEAU.
76- RIVERVIEW LOAM I L A -
SOIIL IS VERY DEEP, WELL -DRAINED, AND MODERATELY PERMEABLE. FORMED IN
LOAMY ALLUVIUM ON FLOOD PLAINS. SLOPES RANGE FROM o TO 5%. RUN-OFF IS
LOW.
FMTEB FAMC
> !CIM e•
COMPACTED SOIL s' MINIMUM
,
,
Ta .
f� II til i I {ra
DD TEMPORARY 18" DIVERSION BERM
CONTROL MEASURES:-
EROSION
E.f"7tJ V RES.EROSION AND SEDIMENT CONTROL MEASURES:
IT IS ANTICIPATED THAT A CONSTRUCTION ENTRANCE, TEMPORARY DIVERSION
BERMS, RIGHT OF WAY DIVERSION, A SEDIMENT BASIN, OUTLET PROTECTION,
INLET PROTECTION, AND SILT FENCE WILL BE INSTALLED TO CONTROL SURFACE
DRAINAGE. TEMPORARY SEEDING WILL BE USED IMMEDIATELY FOLLOWING ALL
LAND DISTURBANCE ACTIVITIES. TEMPORARY STOCKPILE AREAS WILL BE
MAINTAINED FROM TOPSOIL THAT WILL BE STRIPPED FROM AREAS TO BE GRADED
AND STORED FOR LATER SPREADING. STOCKPILE LOCATIONS SHALL BE ON SITE
AND SHALL BE STABILIZED WITH A TEMPORARY VEGETATIVE COVER. PERMANENT
SEEDING WILL BE PERFORMED FOR ALL AREAS WHICH WILL NO LONGER BE
EXCAVATED AND WHERE CONSTRUCTION !ACTIVITIES HAVE CEASED. PERMANENT
SEEDING SHALL ALSO BE: PERFORMED FOR ALL DENUDED AREAS WHICH WILL BE
LEFT DORMANT FOR A YEAR OR MORE. SELECTION OF SEED MIXTURE WILL
DEPEND ON THE TIME OF YEAR APPLIED. TEMPORARY SEEDING WILL BE
PERFORMED FOR ALL DENUDED AREAS WHICH WILL BE LEFT DORMANT FOR MORE
THAN SEVEN DAYS. THESE AREAS SHALL BE SEEDED WITH FAST GERMINATING
VEGETATION IMMEDIATELY FOLLOWING GRADING OF THOSE AREAS. SELECTION OF
SEED MIXTURE WILL DEPEND ON THE TIME: OF YEAR APPLIED.
3.01 SAFETY FENCE - SAFETY FENCE WALL BE INSTALLED AROUND THE
PROPOSED SEDIMENT BASIN.
3.02 CONSTRUCTION ENTRANCE - ONE CONSTRUCTION ENTRANCE SHALL BE
INSTALLED AT SUNSET AVENUE EXTENDED. THIS WILL BE THE ONLY POINT OF
INGRESS AND EGRESS TO THE SITE. CARIE WILL BE TAKEN TO PROTECT
ADJACENT ROADWAYS FROM TRANSFER OF SEDIMENT,
3.05 SILT FENCE- SILT 17ENCE WILL BE PLACED ON THE DOWNSTREAM SIDE OF
DISTURBANCE WHERE NOTED ON THE PLANS.
3.07 STORM DRAIN INLET PROTECTION- 1P WILL BE INSTALLED ON EACH
PROPOSED INLET AS SHOWN ON THE PLANS.
3.09 TEMPORARY DIVERSION DIKE- DIVERSION DIKES WILL BE USED AROUND THE
PERIMETER OF SITE DISTURBANCE WHERE; SHOWN ON THE PLANS TO DIRECT
RUNOFF TO ON-SITE SEDIMENT CONTROL FACILITIES.
3.14 TEMPORARY SEDIMENT BASIN- TEMPORARY SEDIMENT BASINS WILL BE
INSTALLED WHERE SHOWN ON THE PLANS.
3.18 OUTLET PROTECTION- TO BE PROVIDED AT THE OUTFALL OF DRAINAGE
PIPES WHERE SHOWN ON PLANS.
3.19 RIPRAP RIPRAP SHALL BE INSTALLED AS OUTLET PROTECTION WHERE
SHOWN ON THE PLANS.
3.31 TEMPORARY SEEDING- TEMPORARY SEEDING SHALL BE APPLIED WHERE
SHOWN ON THE PLANS.
3.32 PERMANENT SEEDING- PERMANENTLY SEEDING SHALL BE APPLIED WHERE
SHOWN ON THE PLANS.
3.38 TREE PRESERVATION AND PROTECTION- TREE PRESERVATION FENCING
SHALL BE INSTALLED WHERE SHOWN ON THE PLANS. NO TREES SHALL BE
HARMED OUTSIDE OF THE LIMITS OF TREE PROTECTION FENCING.
3.39 DUST CONTROL- DUST CONTROL SHALL BE APPLIED THROUGHOUT THE SITE
WHERE SHOWN ON THE PLANS.
STORMWATER MANAGEMENT:
STORMWATER RUNOFF QUANTITY WILL BE TREATED WITH TWO LEVEL I
BIORETENTION BASINS WITH DOWNSTREAM DETENTION. SEE STORMWATER
MANAGEMENT PLAN SHEETS.
hfAINTENANCE,•
IN GENERAL, DURING CONSTRUCTION THE: RLD OR CONTRACTOR ON-SITE WILL CHECK
ALL EROSION AND SEDIMENT CONTROL MEASURES DAILY AND AFTER EACH
SIGNIFICANT RAINFALL. MONITORING REPORTS WILL BE REQUIRED FROM THE RLD IF
NEEDED. SPECIFIC ATTENTION WILL BE GIVEN TO THE FOLLOWING ITEMS:
a.SEDIMENT BASINS WILL BE CLEANED AND MAINTAINED IN ACCORDANCE WITH THE
VIRGINIA EROSION & SEDIMENT CONTROL HANDBOOK.
b.ALL INLET PROTECTION AND GRAVEL OUTLETS WILL BE CHECKED REGULARLY FOR
SEDIMENT BUILDUP THAT WILL PREVENT PROPER DRAINAGE. IF THE GRAVEL IS
CLOGGED BY SEDIMENT, THE GRAVEL WILL BE REMOVED AND CLEANED, OR IT WILL
BE REPLACED.
c. ALL SILT FENCE BARRIERS WILL BE CHECKED REGULARLY FOR UNDERMINING OR
DETERIORATION OF THE FABRIC AND REPAIRED AS REQUIRED. SEDIMENT SHALL
BE REMOVED WHEN THE LEVEL OF SEDIMENT DEPOSITION REACHED HALF WAY TO
THE TOP OF THE BARRIER.
d.ALL SEEDED AREAS WILL BE CHECKED REGULARLY TO SEE THAT A GOOD STAND
IS MAINTAINED. AREAS SHOULD BE FERTILIZED AND RESEEDED AS NEEDED.
IN CASE OF EMERGENCY;, THE PRIMARY CONTACT FOR THE PROJECT WILL BE THE RLD
OR CONTRACTOR ON-SITE. THE CONTRACTOR WILL BE DETERMINED AT THE TIME THE
CONTRACT IS AWARDED. IN ADDITION THE DEVELOPER MAY BE CONTACTED. UPON
COMPLETION OF THE PROJECT, THE OWNER WILL BE RESPONSIBLE FOR SITE
MAINTENANCE.
1. SET POSTS AND EXCAVATE A 4"X4"
TRENCH UPSLOPE ALONG THE LINE
OF POSTS.
FLOW
PURPOSE:
THE PURPOSE OF THIS LAND -DISTURBING ACTIVITY IS TO CREATE THE ROADWAY, PARKING LOT, AND PRIMARY
RECREATION AREA FACILITIES FOR THE BRIARWOOD SUBDIVISION. THE TOTAL ACREAGE TO BE DISTURBED WITH
THIS PLAN IS 6.50 ACRES,
EXISTING SITE CONDITIONS:
THE EXISTING SITE IS A VACANT, WOODED, HILLY PARCEL. THE SITE IS GENERALLY WELL DRAINED WITH
PRESERVED AND MANAGED STEEP SLOPES. EROSION AND SEDIMENT CONTROL MEASURES HAVE BEEN DESIGNED
TO CONFORM TO THE EXISTING SITE SLOPE AND PROTECT THE PERIMETER STREAMS AND ADJACENT PROPERTIES.
ADJACENT AREAS:
THE SITE IS POSITIONED SOUTH OF ST. IVES ROAD AND WEST OF THE EXISTING DORSET COURT SUBDIVISION. IT
IS BORDERED BY AN EXISTING RWSA FACILITY TO THE WEST AND THE NORTH FORK OF THE RIVANNA RIVER TO
THE SOUTH..
QEFSITE LAND DISTURBANCE:
SITE ACCESS IS THROUGH TMP -32E-2. A PERMANENT 50' ACCESS EASEMENT AND TEMPORARY CONSTRUCTION
EASEMENT SHALL BE OBTAINED FROM THE PROPERTY OWNER.
CRITICAL AREAS:
MANAGED AND PRESERVED STEEP SLOPES TO BE IMPACTED. STREAMS AND BUFFERS TO BE PROTECTED.
WOODLAND PRESERVATION AREAS TO BE MAINTAINED AND PROTECTED WITH TREE PROTECTION FENCING.
SOILS:
SEE SOILS BOUNDARIES ON THE EROSION AND SEDIMENT CONTROL PLAN 'SHEET, AND DESCRIPTIONS ON THIS
SHEET.
SEQUENCE OF CONSTRUCTION:
1. NOTIFY ALBEMARLE COUNTY TO SCHEDULE A PRE -CONSTRUCTION MEETING AS REQUIRED.
2. NO EROSION CONTROL MEASURES MAY BE REMOVED DURING THE CONSTRUCTION PROCESS WITHOUT THE
APPROVAL FROM THE INSPECTOR ON THE PROJECT.
3. CONTRACTOR SHALL IDENTIFY THE LIMITS OF DISTURBANCE AND INSTALL TREE PROTECTION FENCING WHERE
INDICATED ON THE PLANS BEFORE ANY SITE DISTURBANCE SHALL TAKE PLACE. CONTRACTOR SHALL ENSURE
THAT TREES TO BE SAVED ARE FLAGGED ALONG THE LIMITS OF CLEARING AND PROTECTED.
4. INSTALL THE PAVED CONSTRUCTION ENTRANCE WITH WASH RACK AS SHOWN ON THE PLANS. CONSTRUCTION
ENTRANCE TO BE INSTALLED WHERE CONSTRUCTION VEHICLE ROUTES INTERSECT PAVED PUBLIC ROADS,
PROVISIONS SHALL BE MADE TO MINIMIZE THE TRANSPORT OF SEDIMENT BY (VEHICULAR) TRACKING ONTO
THE PAVED SURFACE. WHERE SEDIMENT IS TRANSPORTED ONTO A PUBLIC ROAD SURFACE, THE ROAD SHALL
BE CLEANED THOROUGHLY AT THE END OF EACH DAY. SEDIMENT SHALL BE REMOVED FROM THE ROADS BY
SHOVELING OR SWEEPING AND TRANSPORTING TO A SEDIMENT CONTROL DISPOSAL AREA. STREET WASHING
SHALL BE ALLOWED ONLY AFTER SEDIMENT IS REMOVED IN THIS MANNER. INSTALL THE WASH RACK UPHILL
FROM THE PROPOSED SEDIMENT BASIN. ACSA WILL DETERMINE THE APPROPRIATE METHOD OF SUPPLYING THE
WASH RACK. PARKING AND CONSTRUCTION ENTRANCE AREAS SHALL BE CLEARED OF ALL VEGETATION,
ROOTS, OR OTHER OBJECTIONABLE MATERIALS BEFORE CONSTRUCTION ROAD STABILIZATION IS INSTALLED.
5. CONTRACTOR DOES NOT HAVE PERMISSION TO CLEAR CUT THE SITE PRIOR TO INSTALLING THE PERIMETER
MEASURES AS SHOWN ON THE E&S PLAN. CONTRACTOR SHALL EXPEDITE INSTALLATION OF THE PERIMETER
EROSION AND SEDIMENT CONTROL MEASURES AND PROTECT THE SITE WITH THE LEAST AMOUNT OF TREE
REMOVAL NECESSARY TO INSTALL THESE MEASURES. INSTALL THE INITIAL CONSTRUCTION MEASURES AS
SHOWN ON THE EROSION CONTROL PLAN SHEETS. THIS INCLUDES THE SEDIMENT BASIN, SILT FENCE, AND
DIVERSION BERMS. STABILIZATION MEASURES SHALL BE APPLIED TO EARTHEN STRUCTURES SUCH AS DAMS,
BERMS, AND DIVERSIONS IMMEDIATELY AFTER INSTALLATION. MEASURES INTENDED TO TRAP SEDIMENT SHALL
BE CONSTRUCTED AS A FIRST STEP WITH ANY LAND DISTURBANCE ACTIVITY AND SHALL BE MADE
FUNCTIONAL BEFORE UPSLOPE LAND DISTURBANCE TAKES PLACE.
6. INSTALL ANY REMAINING EROSION CONTROL ITEMS AS SHOWN ON THE EROSION CONTROL PLAN.
7. ONCE ALL THE EROSION CONTROL ITEMS HAVE BEEN INSTALLED AS SHOWN ON THE EROSION CONTROL PLAN
AND THE INSPECTOR HAS APPROVED THE EROSION CONTROL MEASURES, THE CONTRACTOR CAN BEGIN
GRADING OPERATIONS.
8. ROUGH GRADE THE SITE TO THE CONTOURS SHOWN ON THE EROSION CONTROL PLAN.
9. PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS WITHIN SEVEN DAYS
AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE. TEMPORARY SOIL STABILIZATION SHALL BE
APPLIED WITHIN SEVEN DAYS TO DENUDED AREAS THAT MAY NOT BE AT FINAL GRADE BUT WILL REMAIN
DORMANT (UNDISTURBED) FOR LONGER THAN 30 DAYS. PERMANENT STABILIZATION SHALL BE APPLIED TO
AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE YEAR.
10. INSTALL THE CURB AND GUTTER, ROADS, AND SIDEWALKS. INLET PROTECTION SHALL BE INSPECTED AFTER
EACH RAINFALL EVENT AND REPAIRS SHALL BE MADE AS NEEDED. IF THE STONE FILTER BECOMES CLOGGED
WITH SEDIMENT SO THAT IT NO LONGER ADEQUATELY PERFORMS ITS FUNCTION, THE STONE MUST BE PULLED
AWAY AND CLEANED AND/OR REPLACED.
11. ONCE THE SITE IS STABILIZED AND THE INSPECTOR HAS GIVEN APPROVAL, THE CONTRACTOR CAN CONVERT
THE SEDIMENT BASIN TO THE PERMANENT STORMWATER MANAGEMENT FACILITY. NO E&S ITEM SHALL BE
REMOVED UNLESS THE UPSTREAM AREAS ARE STABILIZED AND THE INSPECTOR GIVES PERMISSION.
12. MAINTAIN ALL EROSION CONTROL MEASURES AS SPECIFIED IN THE VIRGINIA EROSION AND SEDIMENT CONTROL
HANDBOOK REMOVING ONLY WHEN APPROVED BY THE LOCAL PROGRAM ADMINISTRATOR IN ACCORDANCE
WITH THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK.
13. ALL TEMPORARY EROSION ANDSEDIMENT CONTROL MEASURES SHALL REMOVED WITHIN 30 DAYS AFTER
FINAL SITE STABILIZATION OR AFTER THE TEMPORARY MEASURES ARE NO LONGER NEEDED, UNLESS
OTHERWISE AUTHORIZED BY THE LOCAL PROGRAM ADMINISTRATOR. TRAPPED SEDIMENT AND THE DISTURBED
SOIL AREAS RESULTING FROM THE DISPOSITION OF TEMPORARY MEASURES SHALL BE PERMANENTLY
STABILIZED TO PREVENT FURTHER EROSION AND SEDIMENTATION.
2. STAPLE WIRE FENCING TO THE POSTS.
SIL T FENCE
sF (WITH WIRE SUPPORT)
NO SCALE
T
vixi;r�rxrstr rrentrafte for ertrsioft ertntm] PIM
s .
TABLE 3.31.11
ACCEP'T'ABLE
TEMPORARY SEEDING PLANT MATERIALS
"QUICK
i �
J
lii111
11
.t .
P nin DAtgsS,_.pecies
.x., 41. .. h o.
lks. acre
Sept. t - Feb. 15
50150 Mix of
Annual Ryegrass
(Lollurnm l '-flm
&
50-100
btu,
i !
Cereal (Winter)Rye
a
..
"t
Or
Annual Ryegrass
60-100
!-
May 1 - Aug 31
German Millet
,t 8u a
it...........
,_}
I;,;. it 'gyp,.✓'
� FIS
,i luibutl+?lxa t �fl.t` &IS Jf I W0 WOO (* io >iakliui N4 A,Y 4ii iiwk llC*11 I hij'i to aijs00,'
eIl1N"ti.1i a�ii'i"�.�+i�7Ridt .M3i'Arsla. li0.'it'i°L[1l +P. i�de4U&S:3CC C( I.:? liiClt�;m IF71'7S4S�{l{9�$
dtr6bt,' tl$ ,FtL':v'4kk3 `. V 1'sh i Ala 1%kkkb't Ise. C+4i'&ikft it:5kii.'ti ,ta` t7AYl1 Tlre' e37ff7,Ylir;.0 Pa} 1Yfr
Nktrltr'i�, ect yettLti ikte�k 4+! k'tYIAt41`£ s'i�xtxesi3 ;til bt�lfirBteut #zwE ifc ;kc�'�a�P�ri.P:cftst,
6 .ti:Ckt[tY -"401711 ilr:t k.4: {ikYLi3v;+""old bTa�tCCC krr:' 4
PAVED . WASH RACK
3. ATTACH THE FILTER FABRIC TO 4. BACKFILL AND COMPACT THE
THE WIRE FENCE AND EXTEND EXCAVATED SOIL.
IT INTO THE TRENCH.
PERSPECTIVE VIEW
PERSPECTIVE VIEW
PLASTIC FENCE
Adapted from Contved Plastics mid
NrDIOT Rat_ a Bricl St�ndard�
PERSPECTIVE VIEW
METAL FENCE
Plate :i.01-1
,t 5
FLOW '
EXTENSION OF FABRIC AND WIRE INTO THE TRENCH.
TOTAL LBS
GENERAL SLOPE (3:1 OR LESS} PER ACE
KENTUCKY 31 FESCUE 128 LBS.
RED TOP GRASS 2 LBS.
SEASONAL NURSE CROP 20 LBS.
SEASONAL NURSE CROP 150 LBS
FEBRUARY 16 THROUGH APRIL ANNUAL RYE
MAY 1 THROUGH AUGUST 15 FOXTAIL MILLET
AUGUST 16 THROUGH OCTOBER ANNUAL RYE
NOVEMBER THROUGH FEBRUARY 15 WINTER RYE
NOTES:
1. LIME AND FERTILIZER NEEDS SHALL BE DETERMINED BY SOIL
TESTS AND APPLIED IN ACCORDANCE WITH VESCH STD. 3.32.
2. SEEDINGS TO BE MULCHED IMMEDIATELY UPON COMPLETION
OF SEED APPLICATION, IN ACCORDANCE W/ VESCH STD 3.35.
PS PERMANENT SEEDING SCHEDULE
NO SCALE
(STD, & SPEC. 3,32 OF VIRGINIA EROSION &
SEDIMENT CONTROL HANDBOOK, 3RD ED.)
F
- -,
CONCRETEBLOCK
WIRESCREE, N
GRAS/EL * FIL TER
OR #5 COARSEAGGREGATE.
IP BLOCK& GRAVEL CURB INLET 3.07 8
SEDIMENT FIL TER
NO SCALE
FE A1C 1VC AND ARMORING
R ryyy G
ti
y ••qq1� L _. , `rte r... a
CORRECT METHODS OF
ku
i
ter+ •� CORRECT TRUNK ARMORING
TRIANGULAR BOARD FENCE
TABLE 3."4
ADHESC4WES VIED FOUR DUS'T.CGNTROL,
Water ,ApplitaWn
Dilution 'T')7rc of Rate
Laillllr5 4AAhz e. WArer) T90VA GaLtmiAm
Anionic
Asphalt Emulsion
1 atex muLsion
Resin in Water
Acrylic Emulsion
(Non -Traffic)
Acrylic 'Emulsion
(Traffic)
Source: Va, DSWC
ATTACH FILTER FABRIC
TO STAKES OR POSTS &
EXTEND IT INTO TRENCI
EXCAVATED S
BACKFILLEDA
COMPACTED
7:1 crone ay 1,206
1233 Fine Spray 235
4:1 Fine Spray 360
7:I Coarse Spray 450
3:5.1 Coarse Spray 350
?EN STAKE
POST
TH=5'M/N.
SIL T FENCE
S
(WITHOUT WIRE SUPPORT) 3`05-2
NOSCALE
4H
I SCOTT R. COLLINS�Z
U Lic. No. 035791
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TABLE 3.31.11
ACCEP'T'ABLE
TEMPORARY SEEDING PLANT MATERIALS
"QUICK
REFERENCE FOR ALL REGIONS'
Rate
P nin DAtgsS,_.pecies
lks. acre
Sept. t - Feb. 15
50150 Mix of
Annual Ryegrass
(Lollurnm l '-flm
&
50-100
a
Cereal (Winter)Rye
(Serale cereal)
Feb. 16 - Apr. 30
Annual Ryegrass
60-100
!-
May 1 - Aug 31
German Millet
SO
( to is italic}
Source: Va, DSWC
TOTAL LBS
GENERAL SLOPE (3:1 OR LESS} PER ACE
KENTUCKY 31 FESCUE 128 LBS.
RED TOP GRASS 2 LBS.
SEASONAL NURSE CROP 20 LBS.
SEASONAL NURSE CROP 150 LBS
FEBRUARY 16 THROUGH APRIL ANNUAL RYE
MAY 1 THROUGH AUGUST 15 FOXTAIL MILLET
AUGUST 16 THROUGH OCTOBER ANNUAL RYE
NOVEMBER THROUGH FEBRUARY 15 WINTER RYE
NOTES:
1. LIME AND FERTILIZER NEEDS SHALL BE DETERMINED BY SOIL
TESTS AND APPLIED IN ACCORDANCE WITH VESCH STD. 3.32.
2. SEEDINGS TO BE MULCHED IMMEDIATELY UPON COMPLETION
OF SEED APPLICATION, IN ACCORDANCE W/ VESCH STD 3.35.
PS PERMANENT SEEDING SCHEDULE
NO SCALE
(STD, & SPEC. 3,32 OF VIRGINIA EROSION &
SEDIMENT CONTROL HANDBOOK, 3RD ED.)
F
- -,
CONCRETEBLOCK
WIRESCREE, N
GRAS/EL * FIL TER
OR #5 COARSEAGGREGATE.
IP BLOCK& GRAVEL CURB INLET 3.07 8
SEDIMENT FIL TER
NO SCALE
FE A1C 1VC AND ARMORING
R ryyy G
ti
y ••qq1� L _. , `rte r... a
CORRECT METHODS OF
ku
i
ter+ •� CORRECT TRUNK ARMORING
TRIANGULAR BOARD FENCE
TABLE 3."4
ADHESC4WES VIED FOUR DUS'T.CGNTROL,
Water ,ApplitaWn
Dilution 'T')7rc of Rate
Laillllr5 4AAhz e. WArer) T90VA GaLtmiAm
Anionic
Asphalt Emulsion
1 atex muLsion
Resin in Water
Acrylic Emulsion
(Non -Traffic)
Acrylic 'Emulsion
(Traffic)
Source: Va, DSWC
ATTACH FILTER FABRIC
TO STAKES OR POSTS &
EXTEND IT INTO TRENCI
EXCAVATED S
BACKFILLEDA
COMPACTED
7:1 crone ay 1,206
1233 Fine Spray 235
4:1 Fine Spray 360
7:I Coarse Spray 450
3:5.1 Coarse Spray 350
?EN STAKE
POST
TH=5'M/N.
SIL T FENCE
S
(WITHOUT WIRE SUPPORT) 3`05-2
NOSCALE
4H
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