HomeMy WebLinkAboutWPO201800058 Plan - VSMP WPO VSMP 2018-11-08w0GLIA RESIDENCE
VSMP PLAN
THE WORK GENERALLY CONSISTS OF THE CONSTRUCTION OF A NEW DRIVEWAY, SITE GRADING, AND PRIVATE
UTILITY CONNECTIONS ASSOCIATED WITH THE CONSTRUCTION OF A LARGE SINGLE FAMILY HOME.
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OWNER: LEE S AND JOANNE CUTCLIFF
1465 TAYLORS GAP ROAD
CHARLOTTESVILLE, VA 22903
CONTACT: ROB JOHNSON
PHONE: 434.960.2918
ENGINEER: LINE + GRADE I CIVIL ENGINEERS
113 4TH STREET NE
CHARLOTTESVILLE, VA 22902
CONTACT: DANIEL C. HYER, PE
PHONE: 434.262.0169
SURVEYOR: KIRK HUGHES AND ASSOCIATES
220 E HIGH STREET
CHARLOTTESVILLE, VA 22902
CONTACT: KIRK HUGHES, L.S.
PARCEL INFO: PARCEL #: 08800-00-00-003D0
ADDRESS: 1495 TAYLORS GAP ROAD
ZONED: RURAL AREA
MAGISTERIAL DISTRICT: SAMUEL MILLER
LEGAL AREA: 21 AC
DISTURBANCE AREA: 150,540 SF (3.46 AC)
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MISS UTILITY TICKET NO.: NONE
12 DIGIT HUC CODE: 020802031201
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UTILITY OWNERS:
WATER: WELL (AS SHOWN HEREIN)
STORM SEWER: AS SHOWN HEREIN
SANITARY SEWER: DRAIN FIELD (AS SHOWN HEREIN)
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ABANDON
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INSIDE DIAMETER
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REMOVE AND biSPOS E
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LANDSCAPED AREA
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REMOVE AND RESET
ADJ
ADJUST
LF
SITE PLAN
LINEAR FEET
R&S
REMOVE AND STACK
APPROX
APPROXIMATE
LOD
LIMITS OF DISTURBANCE
SB
SOUTHBOUND
ASPH
ASPHALT
LT
VRRM SPREADSHEETS
LEFT
SF
SQUARE FEET
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BASELINE
MAX
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MAXIMUM
SSD
STOPPING SIGHT DISTANCE
BLDG
BUILDING
MIN
MINIMUM
STA
STATION
BM
BENCHMARK
ME
MATCH EXISTING
SW
SIDEWALK
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CENTERLINE
NIC
NOT IN CONTRACT
TEMP
TEMPORARY
CF
CUBIC FEET
N.T.S.
NOT TO SCALE
TRANS
TRANSITION
CG
CURB AND GUTTER
NB
NORTHBOUND
TYP
TYPICAL
CONC
CONCRETE
OC
ON CENTER
WB
WESTBOUND
CONST
CONSTRUCTION
OD
OUTSIDE DIAMETER
WSEL
WATER SURFACE ELEVATION
DI
DROP INLET
PRKG
PARKING
DND
DO NOT DISTURB
PROJ
PROJECT
PROP
PROPOSED
EB
EASTBOUND
PVMT
PAVEMENT
EL
ELEVATION
EX
EXISTING
PM
PAVEMENT MARKING
FND
FOUNDATION
REM
REMOVE
GRVL
GRAVEL
ROW
RIGHT-OF-WAY
HC
HANDICAP
RT
RIGHT
ALIGNMENT/GRADING
ABBREVIATIONS
BC
BACK OF CURB
PT
POINT OF TANGENCY
BR
BOTTOM OF RAMP
PVC
POINT OF VERTICAL CURVATURE
BW
BOTTOM OF WALL
PVI
POINT OF VERTICAL INTERSECTION
PVT
POINT OF VERTICAL TANGENCY
D ORA
DELTA ANGLE
EP
EDGE OF PAVEMENT
R
RADIUS
TAN
TANGENT DISTANCE
FL
FLOWLINE
TC
TOP OF CURB
INV
INVERT
L
LENGTH
THT
THROAT
PC
POINT OF CURVATURE
TR
TOP OF RAMP
PCC
POINT OF COMPOUND CURVATURE
TW
TOP OF WALL
Pi
POINT OF INTERSECTION
STA
STATION
PNT
POINT
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OFFSET
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POINT OF REVERSE CURVATURE
VICINITY MAP
SCALE: 1" = 301000'
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LOCATION
.
TITLE SHEET
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C1.0
EROSION AND SEDIMENT CONTROL PLAN PHASE 1
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EROSION AND SEDIMENT CONTROL PLAN PHASE 2
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EROSION AND SEDIMENT CONTROL NOTES
EROSION AND SEDIMENT CONTROL COMPUTATIONS
C1.3
AND DETAILS
PROJECT
EROSION AND SEDIMENT CONTROL DETAILS
C2.0
SITE PLAN
LOCATION
DRIVEWAY ALIGNMENT AND PROFILE
C2.2
SECTIONS AND SPECIFIC DETAILS
C3.0
'
STORMWATER MANAGEMENT COMPUTATIONS AND
C3.1
LOCATION MAP
SCALE: 1" = 500'
SHEET INDEX
SHEET NUMBER SHEET TITLE
CO.0
TITLE SHEET
CO.1
k
C1.0
EROSION AND SEDIMENT CONTROL PLAN PHASE 1
C1.1
EROSION AND SEDIMENT CONTROL PLAN PHASE 2
f*4'
EROSION AND SEDIMENT CONTROL NOTES
EROSION AND SEDIMENT CONTROL COMPUTATIONS
C1.3
AND DETAILS
LOCATION MAP
SCALE: 1" = 500'
SHEET INDEX
SHEET NUMBER SHEET TITLE
CO.0
TITLE SHEET
CO.1
GENERAL NOTES
C1.0
EROSION AND SEDIMENT CONTROL PLAN PHASE 1
C1.1
EROSION AND SEDIMENT CONTROL PLAN PHASE 2
C1.2
EROSION AND SEDIMENT CONTROL NOTES
EROSION AND SEDIMENT CONTROL COMPUTATIONS
C1.3
AND DETAILS
C1.4
EROSION AND SEDIMENT CONTROL DETAILS
C2.0
SITE PLAN
C2.1
DRIVEWAY ALIGNMENT AND PROFILE
C2.2
SECTIONS AND SPECIFIC DETAILS
C3.0
STORMWATER MANAGEMENT PLAN
STORMWATER MANAGEMENT COMPUTATIONS AND
C3.1
DETAILS
C3.2
VRRM SPREADSHEETS
C3.3
BMP DETAILS
C4.0
POLLUTION PREVENTION PLAN PHASE 1
C4,1
POLLUTION PREVENTION PLAN PHASE 2
X0.0
SURVEY
TOTAL SHEETS =
17
SUBMITTAL LOG
SUBMISSION DESCRIPTION RECIPIENT SUBMITTAL DATE
1 1ST SUBMISSION TO DEPARTMENT OF COMMUNITY 7/9/2018
COUNTY DEVELOPMENT
2 2ND SUBMISSION TO DEPARTMENT OF COMMUNITY 08/27/2018
COUNTY DEVELOPMENT
APPROVED
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Corrimi,mty De/eloprnent Department
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DANIEL C. HYER
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GENERAL CONSTRUCTION NOTES:
1. ALL CONSTRUCTION METHODS AND MATERIALS SHALL BE IN ACCORDANCE WITH THE CURRENT VIRGINIA DEPARTMENT OF TRANSPORTATION ROAD AND
BRIDGE STANDARDS AND SPECIFICATIONS (VDOT RBS&S), VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK, THE RULES AND REGULATIONS
WATER AND SANITARY SEWER CONSTRUCTION SPECIFICATIONS AND STANDARDS FOR THE PLAN APPROVING AUTHORITY AND ANY OTHER APPLICABLE
FEDERAL, STATE, OR LOCAL ORDINANCES, CODES, AND LAWS.
2. CONTRACTOR SHALL BE RESPONSIBLE FOR VERIFYING ALL CONDITIONS, MATERIALS, DIMENSIONS LOCATIONS AND EXISTING ELEMENTS TO REMAIN IN
THE FIELD BEFORE PROCEEDINGS WITH ANY WORK. IF CONDITIONS VARY FROM WHAT IS REPRESENTED IN THE DRAWINGS, THE CONTRACTOR SHALL
IMMEDIATELY NOTIFY THE ENGINEER.
3. EXISTING CONSTRUCTION SHOWN IN THESE DRAWINGS SHALL BE USED AS RELATIVE REFERENCES AND ARE TO BE VERIFIED IN THE FIELD BY THE
CONTRACTOR IF DEEMED CRITICAL FOR PROPER EXECUTION OF THE WORK.
4. CONTRACTOR SHALL BE RESPONSIBLE FOR ALL DUST CONTROL MEASURES.
5. PROVIDE ADEQUATE PROTECTION FOR THE EXISTING BUILDINGS, BUILDING OCCUPANTS, VEHICLES AIND PEDESTRIANS AT ALL TIMES IN ACCORDANCE
WITH OSHA AND ALL APPLICABLE STATE AND LOCAL CODES.
6. MATERIALS AND EQUIPMENT SHALL BE STORED IN APPROVED AREAS TO PREVENT IMPACTS ON VEHICLES AND PEDESTRIANS. CONTRACTOR SHALL BE
FULLY RESPONSIBLE FOR MEASURES TAKEN TO ENSURE VEHICULAR AND PEDESTRIAN SAFETY THROUGH THE ENTIRE DURATION OF THE WORK. SAFETY
1S PARAMOUNT.
7. EQUIPMENT AND MATERIALS SHALL BE STORED IN DESIGNATED AREAS AND SHALL NOT ENCUMBER THE OWNER'S OPERATIONS, SURROUNDING RIGHT
OF WAY, OR ADJOINING GROUNDS.
8. ALL WORK AREAS SHALL BE CLEANED DAILY.
9. CONTRACTOR SHALL BE RESPONSIBLE FOR PROTECTION OF BUILDINGS ADJACENT TO WORK AREAS.. CONTRACTOR SHALL BE RESPONSIBLE FOR ALL
COSTS OF DAMAGES RESULTING FROM CONSTRUCTION ACTIVITIES.
10. SECTION CUTS AND DETAIL CALLOUTS INDICATED IN THE DRAWINGS ARE TYPICAL FOR THE PROJECT. THEYARE TO BE CONSIDERED TYPICAL FOR SIMILAR
CONDITIONS AND HAVE NOT BEEN SHOWN EVERYWHERE THEY APPLY.
11. CONTRACTOR SHALL BE SOLELY RESPONSIBLE FOR JOB SITE SAFETY.
12. CONTRACTOR IS RESPONSIBLE FOR COORDINATION OF ALL CONSTRUCTION.
13. SYMBOLS IN THE DRAWINGS ARE NOT TO SCALE.
14. ALL WORK SHALL BE LAID -OUT PRIOR TO INSTALLATION OF NEW WORK BASED ON MEASUREMENT OF EXISTING CONSTRUCTION AND EXISTING
CONSTRUCTION DESIGNATED TO REMAIN AS PART OF THE PROJECT. DO NOT START INSTALLATION OF WORK UNTIL LAY -OUT IS COMPLETE AND POTENTIAL
CONFLICTS HAVE BEEN IDENTIFIED AND ADDRESSED.
15. THE CONTRACTOR SHALL BE HELD RESPONSIBLE FOR ALL DAMAGE TO THE EXISTING BUILDINGS AND ADJACENT GROUNDS AND PROPERTY CAUSE BY
THE CARELESSNESS OR NEGLECT OF HIS WORKMEN. DAMAGE TO PORTIONS OF THE PROPERTY NOT SUBJECT TO WORK UNDER THE CONTRACT SHALL
BE REPAIRED TO THE FULL SATISFACTION OF THE OWNER AND ENGINEER, AT THE CONTRACTOR'S EXPENSE.
16. PROTECTION OF THE WORK: PROTECT EFFECTIVELY ALL MATERIALS AND EQUIPMENT DURING THE ENTIRE PERIOD OF CONSTRUCTION. REPLACE
MATERIALS AND EQUIPMENT DAMAGED, LOST OR STOLEN WITHOUT ADDITIONAL COST TO THE OWNER.
17. PROTECT EXISTING MATERIALS DURING INSTALLATION OF TEMPORARY PROTECTION AND CONSTRUCTION. DO NOT DEFACE OR REMOVE EXISTING
MATERIALS IF INTENDED TO STAY. ATTACHMENTS OF TEMPORARY PROTECTION TO EXISTING CONSTRUCTION SHALL BE APPROVED BY THE ENGINEER
PRIOR TO INSTALLATION.
18. OBTAIN ENGINEER REVIEW AND WRITTEN APPROVAL IN THE FORM OF A CONSTRUCTION CHANGE DIRECTIVE OR SUPPLEMENTAL INSTRUCTION BEFORE
MAKING CHANGES OR ADDITIONS TO CONSTRUCTION OR REMOVING MATERIALS THAT WERE INTENDED TO REMAIN.
19. NOTIFY ENGINEER OF VISIBLE CHANGES IN THE INTEGRITY OF MATERIALS OR COMPONENTS WHETHER DUE TO ENVIRONMENTAL CAUSES INCLUDING
BIOLOGICAL ATTACK, UV DEGRADATION, FREEZING OR THAWING OR DUE TO STRUCTURAL DEFECTS INCLUDING CRACKS, MOVEMENT OR DISTORTION. DO
NOT PROCEED WITH WORK IN QUESTION UNTIL DIRECTED BY THE ENGINEER.
20. WHERE MISSING FEATURES ARE INDICATED TO BE REPAIRED OR REPLACED, PROVIDE FEATURES WHOSE DESIGNS ARE BASED ON ACCURATE
DUPLICATIONS RATHER THAN ON CONJECTURAL DESIGNS, SUBJECT TO APPROVAL OF THE ENGINEER.
21. WHERE WORK REQUIRES EXISTING FEATURES TO BE REMOVED, CLEANED AND REUSED, PERFORM THESE OPERATIONS WITHOUT DAMAGE TO THE
MATERIALS THEMSELVES, TO ADJACENT MATERIALS, OR TO THE SUBSTRATE. WHEN CLEANING, MATCH SAMPLES OF EXISTING MATERIALS THAT HAVE
BEEN CLEANED AND IDENTIFIED FOR ACCEPTABLE CLEANING LEVELS. AVOID OVER CLEANING TO PREVENT DAMAGE TO EXISTING MATERIALS DURING
CLEANING.
22. TEMPORARY MATERIALS MAY BE NEW OR USED, BUT MUST BE ADEQUATE 1N FOR REQUIRED USAGE, MIDST NOT CREATE UNSAFE CONDITIONS AND MUST
NOT VIOLATE REQUIREMENTS OF APPLICABLE CODES AND STANDARDS.
23. CONTRACTOR SHALL PROVIDE AND MAINTAIN ADEQUATE FIRE PROTECTION IN THE FORM OF FIRE EXTINGUISHER OR OTHER EFFECTIVE MEANS OF
EXTINGUISHING FIRE, READY FOR INSTANT USE, DISTRIBUTED AROUND THE PROJECT AND IN AND .ABOUT TEMPORARY, INFLAMMABLE STRUCTURES
DURING CONSTRUCTION OF WORK. EXISTING FIRE HOSE CONNECTIONS SHALL BE ACCESSIBLE AT ALL TIMES BY FIRE DEPARTMENT PERSONNEL.
MATERIAL SAND DEBRIS SHALL NOT BE STORED IN FRONT OF THE CONNECTION, THUS PREVENTING ACCESS. THE CONTRACTOR SHALL COORDINATE
ACCESS PROCEDURES WITH THE FIRE MARSHALL.
24. GASOLINE AND OTHER FLAMMABLE LIQUIDS SHALL BE STORED AND DISPENSED FROM UL LISTED SAFETY CONTAINERS IN CONFORMANCE WITH THE
NATIONAL BOARD OF FIRE UNDERWRITERS' RECOMMENDATIONS.
25. SUBMITTALS ARE NOT REQUIRED IF CONTRACTOR ELECTS TO USE THE PROPRIETARY PRODUCTS LISTED. SUBMITTALS WILL BE REQUIRED IF
CONTRACTOR WISHES TO USE ALTERNATE PRODUCTS. ALL ALTERNATE PRODUCTS ARE SUBJECT TO REVIEW AND APPROVAL BY THE ENGINEER AND
OWNER.
26. CONTRACTOR SHALL CALL MISS UTILITY AT 1-800-552-7001 BEFORE CONSTRUCTION COMMENCES.
27. TREE AND PLANT ROOTS OR BRANCHES THAT MAY INTERFERE WITH THE WORK SHALL BE TRIMMED OR CUT ONLY WITH THE APPROVAL OF THE OWNER
AND ENGINEER. ANY TREES OR PLANTS WHICH ARE SHOWN TO REMAIN THAT DO NOT INTERFERE WITH THE WORK, BUT ARE DAMAGED BY CONTRACTOR
OR HIS SUB -CONTRACTORS, SHALL BE REPLACED BY CONTRACTOR AT NO ADDITIONAL COST.
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1. CLEARING AND GRUBBING SHALL BE CONFINED TO THOSE AREAS NEEDED FOR CONSTRUCTION, AND A,S SHOWN IN THE DRAWINGS.
2. DISTURBED AREAS BEYOND THE ROADWAY CURB AND WHERE INDICATED ON THE PLANS SHALL RECEIVE TOPSOIL AS NECESSARY AND AS DIRECTED.
SEEDING MIXTURE SHALL BE DETERMINED BY THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK SECTION 3.32
3. CONTRACTOR IS PERMITTED TO WORK IN THE PUBLIC RIGHT-OF-WAY AND ANY TEMPORARY OR (PERMANENT EASEMENT SHOWN ON THE PLANS.
HOWEVER, CONTRACTOR SHALL NOTIFY PROPERTY OWNER(S) FORTY-EIGHT (48) HOURS PRIOR TO WORKING ON ANY PRIVATE PROPERTY TO COORDINATE
ACCESS AND TO DETERMINE A STORAGE AREA FOR MATERIALS IF NEEDED. COORDINATION OF ACCESS TO PUBLIC RIGHT-OF-WAY AND STORAGE OF
MATERIALS THEREON SHALL BE COORDINATED WITH THE ENGINEER CONTRACTORS FAILURE TO NOTIFY AND COORDINATE WITH PROPERTY OWNERS
AND/OR THE ENGINEER MAY RESULT IN DELAYS. NO ADDITIONAL COMPENSATION OR TIME FOR PERFORMANCE WILL BE GIVEN FOR ANY SUCH DELAYS.
4. CONTRACTOR SHALL, AT HIS EXPENSE, MAINTAIN THE WORK SITE IN A CLEAN AND ORDERLY APPEARANCE AT ALL TIMES. ALL DEBRIS AND SURPLUS
MATERIAL COLLECTED SHALL BE DISPOSED OF OFF THE WORK SITE BY CONTRACTOR, AT HIS EXPENSE.
5. EXISTING LAWNS, TREES, SHRUBS, FENCES, UTILITIES, CULVERTS, WALLS, WALKS, DRIVEWAYS, POLES, SIGNS, RIGHT-OF-WAY MONUMENTS, MAILBOXES
AND THE LIKE SHALL BE PROTECTED FROM DAMAGE DURING THE WORK. ANY DAMAGE CAUSED TO SUCH ITEMS SHALL BE REPAIRED OR REPLACED BY
CONTRACTOR AT NO ADDITIONAL COST. PROPERTY PINS DISTURBED BY CONTRACTOR THAT ARE NOT SHOWN ON THE PLANS TO BE DISTURBED SHALL BE
RESTORED BY LICENSED SURVEYOR AT THE CONTRACTOR'S EXPENSE.
6. MEASURES TO CONTROL EROSION AND SEDIMENT SHALL BE PROVIDED PURSUANT TO AND IN COMPLIANCE WITH CURRENT FEDERAL, STATE AND LOCAL
REGULATIONS. THE INFORMATION CONTAINED IN THE CONSTRUCTION PLANS AND/OR APPROVAL OF THE PLANS SHALL IN NO WAY RELIEVE THE
CONTRACTOR OR HIS AGENT OF ANY LEGAL RESPONSIBILITY WHICH MAY BE REQUIRED BY THE CODE IOF VIRGINIA OR ANY ORDINANCE ENACTED BY THE
CITY OF CHARLOTTESVILLE. CONTRACTOR SHALL PROVIDE THE NECESSARY DIVERSION DITCHES, (DIKES, OR TEMPORARY CULVERTS REQUIRED TO
PREVENT MUD AND DEBRIS FROM BEING WASHED ONTO THE STREETS OR ADJACENT PROPERTY. CONTRACTOR'S VEHICLES SHALL BE KEPT CLEAN TO
PREVENT MUD OR DUST FROM BEING DEPOSITED ON STREETS. NO AREA SHALL BE LEFT DENUDED FOR MORE THAN SEVEN (7) CALENDAR DAYS.
7. CONTRACTOR SHALL CLEAN UP, RESTORE, SEED AND MAINTAIN ALL DISTURBED AREAS IMMEDIATELY UPON COMPLETION OF WORK. TOPSOIL SEED,
FERTILIZER AND MULCH SHALL BE PLACED IN ACCORDANCE WITH COUNTY OF ALBEMARLE STANDARDS ON ALL DISTURBED AREAS. A PERMANENT STAND
OF GRASS ADEQUATE TO PREVENT EROSION SHALL BE ESTABLISHED PRIOR TO FINAL ACCEPTANCE. ALL EROSION AND SEDIMENT CONTROLS SHALL BE
REMOVED WITHIN 30 DAYS AFTER THE PROJECT IS STABILIZED. (MS -18)
8. FOR FURTHER REQUIREMENTS AND DETAILS OF TREE PRESERVATION, PLANTING, EROSION AND SEDIPMENT CONTROL, REFER TO THE VIRGINIA EROSION
AND SEDIMENT CONTROL HANDBOOK.
9. AN EROSION AND SEDIMENT CONTROL CONTRACTOR CERTIFICATION (E.S.C.C.C) IS REQUIRED FOR ALL LAND DISTURBANCE ACTIVITIES.
10. THE CONTRACTOR SHALL PROPERLY INSTALL AND MAINTAIN EROSION AND SEDIMENT CONTROLS IFOR THE LIFE OF THE PROJECT; AND ROUTINELY
CHECK CONTROL DEVICES BEFORE, DURING AND AFTER STORM EVENTS.
UTILITIES:
1. PRIOR TO CONSTRUCTION OR EXCAVATION, THE CONTRACTOR SHALL ASSUME RESPONSIBILITY OF LOCATING ANY AND ALL UNDERGROUND UTILITIES
(PUBLIC OR PRIVATE) THAT MAY EXIST WITHIN OR CROSS THROUGH THE AREA OF CONSTRUCTION WHETHER OR NOT THEY ARE SHOWN ON THE PLANS.
PRIOR TO ANY CONSTRUCTION ACTIVITY, THE CONTRACTOR SHALL CALL 'MISS UTILITY OF VIRGINIA' AT 1-800-552-7001. THE CONTRACTOR SHALL BE
RESPONSIBLE FOR REPAIRING, AT HIS SOLE EXPENSE, ANY EXISTING UTILITY DAMAGED DURING CONSTRUCTION.
2. THE PLAN DOES NOT GUARANTEE THE EXISTENCE, NONEXISTENCE, SIZE, TYPE, LOCATION, ALIGNMENT, OR DEPTH OF ANY OR ALL UNDERGROUND
UTILITIES OR OTHER FACILITIES. WHERE SURFACE FEATURES (MANHOLES, CATCH BASINS, VALVES, ETC.) ARE UNAVAILABLE OR INCONCLUSIVE.
INFORMATION SHOWN MAY BE FROM UTILITY OWNER'S RECORDS AND/OR ELECTRONIC LINE TRACING, THE RELIABILITY OF WHICH IS UNCERTAIN. THE
CONTRACTOR SHALL PERFORM TEST EXCAVATIONS OR OTHER INVESTIIGATION AS NECESSARYTO VERIFY LOCATION AND CLEARANCES.
3. WHEN THE WORK CROSSES EXISTING UTILITIES, THE EXISTING UTILITIES SHALL BE ADEQUATELY SUPPORTED AND PROTECTED FROM THE DAMAGE DUE
TO THE WORK. ALL METHODS FOR SUPPORTING AND MAINTAINING THE EXISTING UTILITIES SHALL BE APPROVED BY THE RESPECTIVE UTILITY COMPANY
AND/OR THE ENGINEER. CONTRACTOR SHALL EXERCISE CARE TO INSURE THAT THE GRADE AND ALIGNMENT OF EXISTING UTILITIES ARE MAINTAINED
AND THAT NO JOINTS OR CONNECTIONS ARE DISPLACED. BACKFILL SHALL BE CAREFULLY PLACED AND COMPACTED TO PREVENT FUTURE DAMAGE OR
SETTLEMENT TO EXISTING UTILITIES. ANY UTILITIES REMOVED AS PART OF THE WORK, AND NOT INDICATED TO BE REMOVED OR ABANDONED, SHALL BE
RESTORED USING MATERIALS AND INSTALLATION EQUAL TO THE UTILITY'S STANDARDS.
4. CONTRACTOR SHALL NOTIFY LANDOWNERS, TENANTS AND THE ENGINEER A MINIMUM OF 72 HOURS PRIOR TO THE INTERRUPTION OF ANY SERVICES.
SERVICE INTERRUPTIONS SHALL BE KEPT TO A MINIMUM.
5. CONTRACTOR TO MAKE ANY NECESSARY ADJUSTMENTS TO ALL UTILIITY JUNCTION BOXES, VALVE BOXES, MANHOLES, CLEAN -OUTS, AND OTHER GRADE
RELATED ITEMS IN SIDEWALK, ROADWAY, AND/OR ADJACENT AREAS TO MATCH FINISHED GRADE. COSTS ARE TO BE INCLUDED UNDER THE VARIOUS
UNIT BID ITEMS. NO SEPARATE PAYMENT WILL BE MADE.
EARTH WORK AND SITE CONDITIONS:
1. EXCEPT AS OTHERWISE SHOWN ON THE PLANS, ALL CUTS AND FILLS SHALL BE NO GREATER THAN 3:1.
2. UNLESS OTHERWISE NOTED ON THE PLANS OR IN THE SPECIFICATIONS, ALL FILL MATERIALS SHALL BE COMPACTED TO 95% OF THEORETICAL MAXIMUM
DENSITY AS DETERMINED BY AASHTO T-99 METHOD A, WITHIN PLUS OR MINUS 2% OF OPTIMUM MOISTURE, FOR THE FULL WIDTH AND THE DEPTH OF
THE FILL.
3. ALL GRADING AND IMPROVEMENTS TO BE CONFINED TO THE PROJECT AREA UNLESS OTHERWISE INDICATED.
4. PROPOSED GRADES SHALL BE FIELD ADJUSTED TO CONFORM TO THE INTENT OF THE TYPICAL SECTIONS. A SMOOTH GRADE SHALL BE MAINTAINED FROM
THE BASELINE TO THE PROPOSED EDGE OF PAVEMENT OR FACE OF CURB TO PRECLUDE THE FORMING OF FALSE GUTTERS AND/OR PONDING OF WATER
ON ALL PAVED SURFACES.
5. CONTRACTOR SHALL MAINTAIN A SMOOTH GRADE TO THE PROPOSED EDGE OF PAVEMENT OR FACE OF CURB TO PROVIDE POSITIVE DRAINGE ON ALL
PAVED SURFACES. ANY AREAS WHERE WATER IS IMPOUNDED SHALL BE CORRECTED BY CONTRACTOR AT NO ADDITIONAL COST. POSITIVE DRAINAGE OF
ALL ROADWAY AREAS TO THE STORM DRAIN INLETS OR OTHER ACCEPTABLE DRAINAGE CHANNELS AS NOTED ON THE PLANS IS REQUIRED.
6. CONTRACTOR SHALL MAINTAIN EXISTING STREAMS, DITCHES, DRAINAGE STRUCTURES, CULVERT AND FLOWS AT ALL TIMES DURING THE WORK.
CONTRACTOR SHALL PAY FOR ALL PERSONAL INJURY AND PROPERTY DAMAGE WHICH MAY OCCUR AS A RESULT OF FAILING TO MAINTAIN ADEQUATE
DRAINAGE.
7. ALL PIPES, DI'S AND OTHER STRUCTURES SHALL BE INSPECTED BY THE ENGINEER BEFORE BEING BACKFILLED OR BURIED. THE ENGINEER MAY REQUIRE
CONTRACTOR, AT NO ADDITIONAL COST, TO UNCOVER AND RE-COVER SUCH STRUCTURES IF THE HAVE BEEN BACKFILLED OR BURIED WITHOUT SUCH
INSPECTION.
8. ALL STORM CHANNELS, DRAINS, AND SEWER SYSTEMS SHALL BE +CLEANED UPON COMPLETION OF THE PROPOSED WORK. SEDIMENT, CHEMICALS,
AND/OR DEBRIS REMOVED FROM THESE SYSTEMS SHALL BE REMOVIED AND DISPOSED OF PROPERLY.
CONCRETE AND ASPHALT:
1. ALL MATERIAL INSIDE FORMS SHALL BE CLEAN AND FREE OF ALL ROCKS AND OTHER LOOSE DEBRIS. SUB -BASE MATERIAL SHALL BE COMPACTED BY
MECHANICAL MEANS.
2. CONCRETE SHALL NOT BE PLACED UNLESS THE AIR TEMPERATURE IS AT LEAST 40 DEGREES FAHRENHEIT (F) IN THE SHADE AND RISING.
3. CONCRETE SHALL NOT BE PLACED UNTIL STEEL DOWELS HAVE BEEN INSTALLED IN EXISTING CONCRETE IN ACCORDANCE WITH COUNTY OF ALBEMARLE
STANDARDS.
4. 1/2 " PREMOLDED EXPANSION JOINT MATERIAL SHALL BE PLACED AT A MAXIMUM OF 30' INTERVALS ON NEW SIDEWALK, CURB, CURB & GUTTER, AT
EACH END OF DRIVEWAY ENTRANCES, AT EACH END OF HANDICAP RAMPS, SOME POINT ON ENTRANCE WALKS AND STEPS ADJUSTMENTS, AND ALONG
BUILDINGS AND WALLS WHERE NEW CONCRETE SIDEWALKS ARE PLACED AGAINST THEM.
5. ALL EXISTING CURBS, CURB & GUTTER, SIDEWALK AND STEPS TO BE REMOVED SHALL BE TAKEN OUT TO THE NEAREST JOINT. DEMOLITION AND
DISPOSAL COST TO BE INCLUDED IN OTHER UNIT BID ITEMS. NO SEPARATE PAYMENT WILL BE MADE FOR THIS WORK.
6. EXISTING ASPHALT CONCRETE PAVEMENT SHALL BE SAW CUT AND REMOVED AS PER THE SPECIFICATIONS. REMOVAL SHALL BE DONE IN SUCH A
MANNER AS TO NOT TEAR, BULGE OR DISPLACE ADJACENT PAVEMENT. EDGES SHALL BE CLEAN AND VERTICAL, ALL CUTS SHALL BE PARALLEL OR
PERPENDICULAR TO THE DIRECTION OF TRAFFIC.
7. DISPOSAL OF ALL EXCESS AND DEMOLITION MATERIAL IS THE RESPONSIBILITY OF THE CONTRACTOR.
GENERAL NOTES FOR MAINTENANCE OF TRAFFIC:
1. TEMPORARY STREET CLOSURE PERMIT REQUIRED FOR CLOSURE OF SIDEWALKS, PARKING SPACES AND ROADEWAYS AND IS SUBJECT TO APPROVAL BY
THE COUNTY OF ALBEMARLE TRAFFIC ENGINEER.
2. THE VIRGINIA WORK AREA PROTECTION MANUAL AND THE MANUAL ON UNIFORM TRAFFIC CONTROL DEVICES (MUTCD) SHALL GOVERN ALL TEMPORARY
TRAFFIC CONTROL OPERATIONS THROUGHOUT CONSTRUCTION OF THIS PROJECT. ADHERENCE TO APPLICABLE PROVISIONS OF THE MANUAL IS REQUIRED
OF THE CONTRACTOR EVEN THOUGH DETAILED REFERENCE TO ALL SUCH PROVISIONS MAY NOT BE CONTAINED IN THE PLANS.
GENERAL NOTES
3. ALL EXISTING RESIDENTIAL AND COMMERCIAL ENTRANCES SHALL BE: MAINTAINED AT ALL TIMES, UNLESS OTHERWISE DIRECTED BY THE ENGINEER.
4. NO TEMPORARY PAVEMENT MARKING SHALL BE ALLOWED ON THE FINAL ASPHALT SURFACE COURSE.
5. THE CONTRACTOR SHALL MAINTAIN ALL LANES OF TRAVEL OPEN FROM 6:30 AM TO 9:00 AM AND 3:00 PM TO 5:00 PM UNLESS DEEMED UNNECESSARY
BY THE ENGINEER. SHORT PERIODS OF ONE WAY FLAGGING OPERATIONS MAY BE CONDUCTED OUTSIDE THE HOURS MENTIONED ABOVE.
6. ALL TRAFFIC SIGNALS SHALL BE ADJUSTED AS DEEMED NECESSARY BY THE ENGINEER PRIOR TO ANY TRAFFIC CHANGES.
7. WHEN WORK IN THE EXCAVATION AREA IS DISCONTINUED FOR A SHORT PERIOD OF TIME, AS AT NIGHT, THE CONTRACTOR SHALL BACKFILL THE CUT
AREAS ADJACENT TO THE BUSTING PAVEMENT WITH A 'FILLET OF MIATERIAL'. THE FILLET SHALL BE COMPOSED OF THE SAME MATERIAL (EXCAVATION,
BORROW, BASE COURSE, ETC.) ALL COSTS FOR PLACING AND REMOVING THIS FILLET OF MATERIAL SHALL BE INCLUDED IN THE PRICE BID FOR OTHER
BID ITEMS OF WORK ON THIS PROJECT, AND NO ADDITIONAL CHARGE WILL BE ALLOWED.
8. EXISTING SURFACE, AGGREGATE BASE AND SUBBASE MATERIAL WHICH WILL BE DEMOLISHED OR OBLITERATED DURING CONSTRUCTION AND WHICH IS
SUITABLE FOR MAINTENANCE OF TRAFFIC AS DETERMINED BY THE ENGINEER, SHALL BE SALVAGED AND UTILIZED FOR MAINTENANCE OF TRAFFIC PRIOR
TO THE USE OF COMMERCIAL MATERIAL. WHEN NOT SPECIFIED AS A� SEPARATE PAY ITEM, THE REMOVAL AND SALVAGING OF EXISTING SURFACES AND
AGGREGATE BASE AND SUBBASE MATERIAL WILL BE MEASURED AND PAID FOR AS REGULAR EXCAVATION IN ACCORDANCE WITH SECTION 303 OF THE
VDOT ROAD AND BRIDGE SPECIFICATIONS.
9. CONSTRUCT ALL INTERSECTIONS AND DRIVEWAYS UNDER TRAFFIC.
10. IF USED, TEMPORARY TRAFFIC BARRIER SERVICE SHALL BE INSTALLED AND REMOVED SO AS NOT TO PRESENT ANY BLUNT END OR HAZARD TO THE
MOTORING PUBLIC.
11. CONTRACTOR SHALL NOTIFY TRANSIT PROVIDERS A MINIMUM OFTWO WEEKS PRIOR TO ANY IMPACT OR DISRUPTION TO REGULAR SERVICE OR STOPS.
12. ALL EXISTING PAVEMENT MARKINGS CONFLICTING WITH PROPOSED CONSTRUCTION PAVEMENT MARKINGS (IF USED) SHALL BE ERADICATED.
13. INSTALLATION AND REMOVAL OF TEMPORARY TRAFFIC CONTROL DEVICES SHALL BE IN ACCORDANCE WITH THE SECTION 6G.25 OF THE WORK AREA
PROTECTION MANUAL.
14. USE APPROPRIATE SIGNS TO SHIFT PEDESTRIAN TRAFFIC AS NEEDED..
15. CONTRACTOR SHALL ASSURE ENDS OF TEMPORARY CONCRETE BARRIER (IF USED) DO NOT OBSTRUCT INTERSECTION SIGHT LINES.
SUGGESTED CONSTRUCTION SEQUENCING:
1. PROTECT ADJACENT AREAS FROM DAMAGE DUE TO CONSTRUCTION ACTIVITIES.
2. INSTALL PERIMETER CONTROL MEASURES AS INDICATED ON PLANS INCLUDING SAFETY FENCE, SILT FENCE, AND TREE PROTECTION.
3. CLEAR AND GRUB EXISTING GROUND COVER AND DEMOLISH EXISTING ITEMS MARKED FOR DEMOLITION.
4. GRADE SITE TO FINAL GRADES PER PLANS.
5. FORM AND INSTALL CONCRETE WORK.
6. STABILIZE ALL AREAS AND REPAIR ANY EROSION AND REMOVE ANY SIEDIMENT.
7. INSTALL REMAINING SITE FEATURES.
8. DRESS AND OVERSEED ALL DISTURBED AREAS AS NECESSARY TO AFFECT PERMANENT VEGETATIVE COVER.
9. REMOVE PERIMETER CONTROL MEASURES.
BENCH MARK TIE -DOWN:
GENERAL SURVEY NOTES:
1. BASIS OF DATUM: VERTICAL: NAVD-88
HORIZONTAL: NAD -83 VIRGINIA SOUTH ZONE
2. BENCHMARKS: (SEE IMAGES ABOVE)
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PROJECT DESCRIPTION:
THIS PROJECT CONSISTS OF THE CONSTRUCTION OF A LARGE SINGLE FAMILY HOME AND ASSOCIATED DRIVE, SITE GRADING, STORMWATER MANAGEMENT,
AND PRIVATE UTILITY CONNECTIONS. THE DISTURBANCE AREA ASSOCIATED WITH THIS PROJECT IS ±150,540 SF (3.46 AC).
EXISTING SITE CONDITIONS:
THE PROPERTY CONSISTS OF 21 ACRES OF OPEN, UNUSED PASTURE AND MATURE FORESTS. THE DISTURBANCE AREA ASSOCIATED WITH THIS PROJECT
RESIDES ENTIRELY IN THE OPEN PASTURE PORTION OF THE PROPERTY. A FARM ROAD CUTS THROUGH THE SOUTHERN PORTION OF THE SITE FROM WEST TO
EAST, AND THE NORTH FORK OF THE HARDWARE RIVER CUTS THROUGH THE EXTREME EAST PORTION OF THE SITE FROM NORTH TO SOUTH. THE SLOPES
WITHIN THE PROJECT AREA RANGE FROM 8% TO 15%.
ADJACENT AREAS:
THE PROPOSED PROJECT IS BORDERED ON ALL SIDES BY THE BLANDEMAR FARMS PROPERTIES, ZONED RURAL AREAS. ADJACENT TERRAIN AND LANDCOVER
IS COMPARABLE TO THAT FOUND ON THE PROPERTY. STEEP SLOPES BORDER THE SITE AT THE EXTREME SOUTHERN AND EASTERN PROPERTY BOUNDARIES,
AND A PORTION OF THE EASTERN PROPERTY EDGE IS WITHIN THE MAJOR FLOOPLAIN ASSOCIATED WITH THE NORTH FORK OF HARDWARE RIVER.
OFF-SITE AREAS:
IT IS NOT ANTICIPATED THAT ANY OFF-SITE AREAS WILL BE DISTURBED DURING CONSTRUCTION. UNSUITABLE MATERIALS RESULTING FROM THE PROPOSED
WORK SHALL EITHER BE DISPOSED OF ON SITE IN THE FORM OF LANDSCAPED FILL IN NON-CRITICAL AREAS, OR HAULED FROM THE SITE AND DISPOSED OF
AT AN APPROVED DISPOSAL SITE PERMITTED SEPARATELY FROM THIS PROJECT.
SOILS:
SEE THE USDA SOILS DELINEATION MAP ON THIS SHEET. ALL SOILS ON SITE ARE OF HYDROLOGIC GROUP B, ,AND ARE IN GOOD HYDROLOGIC CONDITION, WITH
A FIELD MEASURED INFILTRATION RATE OF 0.5-0.75 INCHES PER HOUR.
CRITICAL AREAS:
THE DISTURBANCE AREA ASSOCIATED WITH THIS PROJECT WILL NOT ENCROACH ON THE EXISTING CRITICAL AREAS NEAR THE SITE. HOWEVER, THE
DISTURBANCE IS UPHILL FROM THE EXISTING MAJOR FLOODPLAIN TO THE EAST AND AREAS OF STEEP SLOPES TO THE EAST AND SOUTH. THE CONTRACTOR
SHALL TAKE EXTRA PRECAUTIONS TO PREVENT DISTURBANCE TO THESE AREAS, AND PREVENT EROSION AND SEDIMENT UPHILL FROM THESE AREAS. IN
ADDITION, THIS PROJECT PROPOSES A BIORETENTION FILTER AND MAXIMUM FILL SLOPES OF 3:1. THE CONTRACTOR SHALL TAKE EXTRA PRECAUTIONS TO
PROTECT AND STABILIZE THESE CRITICAL AREAS ON THE SITE.
EROSION & SEDIMENT CONTROL MEASURES:
REFER TO THIS SHEET FOR A LIST OF ALL PROPOSED EROSION AND SEDIMENT CONTROL MEASURES TO BE USED ON SITE.
PERMANENT STABILIZATION:
THE SITE WILL BE STABILIZED THROUGH THE USE OF PERMANENT SEEDING, STONE AND RIPRAP, EC -2 BLANKETING, LANDSCAPING, AND IMPERVIOUS COVER.
SEEDING INFORMATION, DATES AND AMENDMENTS ARE INCLUDED ON THE PLANS. SOIL TESTING SHALL BE COMPLETED BY THE CONTRACTOR TO DETERMINE
THE SUITABILITY OF EXISTING SOILS AND THE NEED FOR ANY SOIL AMENDMENTS TO ENSURE THAT PERMANENT SEEDING WILL GROW EFFECTIVELY.
STORM WATER RUNOFF CONSIDERATIONS:
SOME AREAS OF PROPOSED WORK RECEIVE A LARGE AMOUNT OF SHEET FLOW FROM UPHILL OFFSITE AREAS. A CLEAN WATER DIVERSION IS PROPOSED ON
THE UPHILL EDGE OF A PORTION OF THE SITE TO PROTECT THE SITE FROM LARGE VOLUMES OF OFFSITE RUNOFF. THIS CLEAN WATER DIVERSION WILL BE
DIRECTED TO A PROPOSED CULVERT THAT WILL BE INSTALLED WITH THE FIRST PHASE OF EROSION AND SEDIMENT CONTROL INSTALLATIONS. THE MAJORITY
OF RUNOFF FROM ONSITE WILL BE DIRECTED TO A SEDIMENT TRAP (SEE COMPUTATIONS AND DETAILS ON SHEET C1.3). RUNOFF FROM THE REMAINDER OF
THE SITE WILL BE DIRECTED THROUGH APPROPRIATE EROSION AND SEDIMENT CONTROLS BEFORE DISCHARGING TO AN ADEQUATE OUTFALL PROTECTED
FROM EROSION AND SEDIMENT AS SHOWN ON THE PLANS. THE PROPOSED WORK ASSOCIATED WITH THIS APPLICATION REQUIRES STORMWATER QUANTITY
AND QUALITY CONTROL AS WELL; SEE SHEETS C3.0 -C3.2 FOR THE PROPOSED STORMWATER MANAGEMENT PLAN.
MAINTENANCE:
ALL E&S MEASURES SHALL BE INSPECTED REGULARLY AS REQUIRED BY STATE STANDARDS AND MAINTAINED IN GOOD WORKING ORDER. REQUIRED REPAIRS
SHALL BE MADE IMMEDIATELY. SEE THE MAINTENANCE NARRATIVE ON THIS SHEET FOR SPECIFIC MAINTENANCE ITEMS AND INSPECTION TIMES.
37" 59' 25' N o
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Soils
Soil Rating Polygons
Map unit symbol Map unit name Rating Acres in Api Perce nt of AOi
0 A
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32.1%!
19B Cullen loam, 2 to 7 B 4.2 B
percent slopes
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19C 1 Cullen loam, 7 to 15 B 6.8 51 .2 /o
20D3 Cullen clay loam, 15 to B 2,21 16.7%';C/D
25 percent slopes,
j severely eroded D
Totals for Area of Interest13.2 100.0%' 0 Not rated or not available
- - i
ALBEMARLE COUNTY GENERAL CONSTRUCTION NOTES:
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 STEIP 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.
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 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/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 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.
EROSION AND SEDIMENT CONTROL MEASURES:
UNLESS OTHERWISE INDICATED, ALL EROSION AND SEDIMENT CONTROL PRACTICES LISTED BELOW, AND ANY OTHER EROSION CONTROL PRACTICES
REQUIRED SHALL BE CONSTRUCTED AND MAINTAINED IN ACCORDANCE WITH THE MINIMUM STANDARDS AND SPECIFICATIONS OFTHE LATEST EDITION OF
THE VIRGINIA EROSION AND SEDIMENT CONTROL REGULATIONS AND ViRGIINIA EROSION AND SEDIMENT CONTROL HANDBOOK, OR COUNTY OF ALBEMARLE
STANDARDS, WHICHEVER ARE MORE STRINGENT.
TEMPORARY STONE CONSTRUCTION ENTRANCE - 3.02
A STABILIZED STONE PAD WITH A FILTER FABRIC UNDERLINER LOCATED AT POINTS OF VEHICULAR INGRESS AND EGRESS ON A CONSTRUCTION SITE.
CONSTRUCTION ROAD STABILIZATION - 3.03
THE TEMPORARY STABILIZATION OF ACCESS ROADS, SUBDIVISION ROADS, PARKING AREAS, AND OTHER ON-SITE VEHICLE TRANSPORTATION ROUTES WITH
STONE IMMEDIATELY AFTER GRADING.
SILT FENCE - 3.05
A TEMPORARY SEDIMENT BARRIER CONSISTING OF A SYNTHETIC FILTER FABRIC STRETCHED ACROSS AND ATTACHED TO SUPPORTING POSTS AND
ENTRENCHED.
STORM DRAIN INLET PROTECTION - 3,07
A SEDIMENT FILTER OR AN EXCAVATED IMPOUNDING AREA AROUND A STORM DRAIN DROP INLET OR CURB INLET.
CULVERT INLET PROTECTION - 3.08
A SEDIMENT FILTER LOCATED AT THE INLET TO STORM SEWER CULVERTS.
TEMPORARY DIVERSION DIKE - 3.09
A TEMPORARY RIDGE OF COMPACTED SOIL CONSTRUCTED AT THE TOP OR BASE OF A SLOPING DISTURBED AREA.
TEMPORARY SEDIMENT TRAP - 3.13
A TEMPORARY PONDING AREA FORMED BY CONSTRUCTING AN EARTHEN EMBANKMENT WITH A STONE OUTLET.
OUTLET PROTECTION - 3.18
A PERMANENT OUTLET PROTECTION MEASURE THAT CONSISTS OF STRUCTURALLY LINED APRONS OR OTHER ACCEPTABLE ENERGY DISSIPATING DEVICES
PLACED AT THE OUTLETS OF ALL PIPES OR PAVED CHANNEL SECTIONS.
ROCK CHECK DAMS - 3.20
SMALL TEMPORARY STONE DAMS CONSTRUCTED ACROSS A SWALE OR DRAINAGE DITCH.
SURFACE ROUGHENING - 3.29
PROVIDING A ROUGH SOIL SURFACE WITH HORIZONTAL DEPRESSIONS CREATED BY OPERATING A TILLAGE OR OTHER SUITABLE IMPLEMENT ON THE
CONTOUR, OR BY LEAVING SLOPES IN A ROUGHENED CONDITION BY NOT FINE GRADING THEM.
TEMPORARY SEEDING - 3.31
THE ESTABLISHMENT OF A TEMPORARY VEGETATIVE COVER ON DISTURBED AREAS THAT WILL NOT BE BROUGHT TO FINAL GRADE FOR PERIODS OF 30 DAYS
TO ONE YEAR BY SEEDING WITH APPROPRIATE RAPIDLY -GROWING ANNUAL PLANTS.
PERMANENT SEEDING - 3.32
THE ESTABLISHMENT OF PERENNIAL VEGETATIVE COVER BY PLANTING SEED ON ROUGH -GRADED AREAS THAT WILL NOT BE BROUGHT TO FINAL GRADE FOR A
YEAR OR MORE OR WHERE PERMANENT VEGETATIVE COVER IS NEEDED ON FINE -GRADED AREAS IN ACCORDANCE WITH EROSION AND SEDIMENT CONTROL
TECHNICAL BULLETIN NO. 4: NUTRIENT MANAGEMENT FOR DEVELOPMENT SITES.
MULCHING - 3.35
APPLICATION OF PLANT RESIDUES OR OTHER SUITABLE MATERIALS TO DISTURBED SURFACES TO PREVENT EROSION AND REDUCE OVERLAND FLOW
VELOCITIES. FOSTERS PLANT GROWTH BY INCREASING AVAILABLE MOISTURE AND PROVIDING INSULATION AGAINST EXTREME HEAT OR COLD. SHOULD BE
APPLIED TO ALL SEEDING OPERATION, OTHER PLANT MATERIALS WHICH DO NOT PROVIDE ADEQUATE SOIL PROTECTION BY THEMSELVES, AND BARE AREAS
WHICH CANNOT BE SODDED DUE TO THE SEASON BUT WHICH STILL NEED PROTECTION TO PREVENT SOIL LOSS.
SOIL STABILIZATION BLANKETS AND MATTING - 3.36
THE INSTALLATION OF A PROTECTIVE COVERING (BLANKET) OR A SOIL STABILIZATION MAT ON A PREPARED PLANTING AREA OF A STEEP SLOPE, CHANNEL, OR
SHORELINE.
TREE PRESERVATION & PROTECTION - 3.38
PROTECTION OF DESIRABLE TREES FROM MECHANICAL AND OTHER INJURY DURING LAND DISTURBING AND CONSTRUCTION ACTIVITY.
GENERAL EROSION AND SEDIMENT CONTROL NOTES:
ES -1: UNLESS OTHERWISE INDICATED, ALL VEGETATIVE 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 REGULATIONS (4VAC50-30).
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. THE NAME OF THE RESPONSIBLE LAND
DISTURBER MUST BE PROVIDED TO THE PLAN -APPROVING AUTHORITY PRIOR TO ACTUAL ENGAGEMENT IN THE LAND -DISTURBING ACTIVITY SHOWN ON
THE APPROVED PLAN. IF THE NAME IS NOT PROVIDED PRIOR TO ENGAGING IN THE LAND -DISTURBING ACTIVITY, THE PLAN'S APPROVAL WILL BE
REVOKED.
ES -3: ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR AS SOON AS THE FIRST STEP IN CLEARING.
ES -4: A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAIN SHALL BE MAINTAINED ON THE SITE AT 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 WASTED 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 C&NTROL MEASURES AT ALL TIMES DURING LAND DISI"URGING ACTIVITIES AND
DURING SITE DEVELOPMENT UNTIL FINAL STABILIZATION IS ACHIEVED, AFTER WHICH, UPON APPROVAL OF THE PLAN -APPROVING AUTHORITY, THE
CONTROLS SHALL BE REMOVED. TRAPPED SEDIMENT AND THE DISTURBED SOIL AREAS RESULTING FROM THE REMOVAL OF TEMPORARY MEASURES
SHALL BE PERMANENTLY STABILIZED TO PREVENT FURTHER EROSION AND SEDIMENTATION.
ES -8: DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED FILTERING DEVICE.
ES -9: THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES AT LEAST EVERY 2 WEEKS AND IMMEDIATELY AFTER EACH RUNOFF -PRODUCING
RAINFALL EVENT. ANY NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE EFFECTIVENESS OF THE EROSION CONTROL DEVICES SHALL BE MADE
IMMEDIATELY.
ES -10: THE CONTRACTOR IS RESPONSIBLE FOR THE DAILY REMOVAL OF SEDIMENT THAT HAS BEEN TRANSPORTED ONTO A PAVED OR PUBLIC ROAD
SURFACE.
ES -11: SEEDING OPERATIONS SHALL BE INITIATED WITHIN 7 DAYS AFTER PREACHING FINAL GRADE OR UPON SUSPENSION OF GRADING OPERATIONS FOR AN
ANTICIPATED DURATION OF GREATER THAN 30 DAYS OR UPON COMPLETION OF GRADING OPERATIONS FOR A SPECIFIC AREA.
ES -12: THE CONTRACTOR SHALL BE RESPONSIBLE FOR PREVENTING SURFACE AND AIR MOVEMENT OF DUST FROM EXPOSED SOILS WHICH MAY PRESENT
HEALTH HAZARDS, TRAFFIC SAFETY PROBLEMS, OR HARM ANIMAL OR PLANT LIFE.
ES -13: A VSMP IS REQUIRED FOR PROJECTS DISTURBING 2,500 SQUARE FEET OR GREATER IN A DESIGNATED CHESAPEAKE BAY PRESERVATION AREA (CBPA)
OR ONE ACRE OR GREATER OUTSIDE THE CBPA. FOR MORE INFORMATION VISIT THE VIRGINIA STORMWATER MANAGEMENT PROGRAM PERMITTING
WEB PAGE AT: http-//www.deq.virginia.gov/Programs/Water/StormiwaterManagement.aspx
MAINTENANCE:
IN GENERAL, ALL EROSION AND SEDIMENTATION CONTROL MEASURES SHALL BE CHECKED DAILY AND AFTER EACH RAINFALL EVENT GREATER THAN 0.25
INCHES. MEASURES SHOULD BE CLEANED AND REPAIRED ACCORDING TO THE FOLLOWING SCHEDULE AND THE VIRGINIA EROSION AND SEDIMENT CONTROL
HANDBOOK. THE FOLLOWING WILL BE CHECKED IN PARTICULAR:
1. THE CONSTRUCTION ENTRANCES AND CONSTRUCTION ROAD STABILIZATION AREAS SHALL BE MAINTAINED IN A CONDITION WHICH WILL PREVENT
TRACKING OR FLOW OF MUD ONTO PUBLIC RIGHTS-OF-WAY THROUGH PERIODIC TOP DRESSING WITH ADDITIONAL STONE AND/OR WASHING AND
REWORKING OF EXISTING STONE.
2. SEDIMENT DEPOSITS SHALL BE REMOVED FROM SILT FENCE AFTER EACH RAINFALL. UNDER NO CIRCUMSTANCES SHALL DEPOSITS BE ALLOWED TO
ACCUMULATE ABOVE HALF THE HEIGHT OF THE FENCE. DAMAGED OR UNDERCUT SILT FENCE SHALL BE REPAIRED IMMEDIATELY. SHOULD SILT FENCE
BECOME INEFFECTIVE OR REACH THE END OF THE EXPECTED USEABLE LIFE, FABRIC SHALL BE REPLACED IMMEDIATELY. UPON SILT FENCE REMOVAL,
DRESS ANY SEDIMENT DEPOSITS TO CONFORM WITH EXISTING GRADE AND SEED.
3. INLET PROTECTION SHALL BE CHECKED REGULARLY FOR SEDIMENT. IF EXCESSIVE SEDIMENT IS PRESENT, OR IF EXCESSIVE PONDING OCCURS AFTER
RAINFALL, THE STONE SHALL BE PULLED AWAYAND CLEANED OR REPLACED.
4. STONE USED IN CULVERT INLET PROTECTION SHALL BE INSPECTED REGULARLY FOR CLOGGING AND REPLACED AS NEEDED TO MAINTAIN FULL
FUNCTIONALITY. UNDER NO CIRCUMSTANCES SHALL SEDIMENT BE ALLOWED TO ACCUMULATE ABOVE ONE-HALF OF THE HEIGHT OF THE INLET
PROTECTION. ACCUMULATED SEDIMENT SHALL BE REMOVED AND UPSTREAM AREAS PERMANENTLY STABILIZED BEFORE THIS CONTROL IS REMOVED.
5. CHECK DAMS SHALL BE INSPECTED REGULARLY TO ENSURE THE CENTER OF THE DAM IS LOWER THAN THE EDGES. SEDIMENT SHALL BE REMOVED
WHEN IT REACHES ONE HALF THE HEIGHT OF THE DAM.
6. ANY SOIL WITHIN TREE PROTECTION AREAS THAT IS INADVERTENTLY COMPACTED SHALL BE AERATED WITH AN IRON BAR EVERY 18 INCHES TO A DEPTH
OF 12 INCHES. PHYSICAL DAMAGE TO TREES SHALL BE REPAIRED AS OUTLINED IN THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK SECTION
3.38. TREES THAT ARE STRESSED OR DAMAGED SHALL RECEIVE AN APPROPRIATE APPLICATION OF FERTILIZER TO AID RECOVERY.
7. ALL SEEDED AREAS WILL BE CHECKED REGULARLY TO SEE THAT A GOOD STAND IS MAINTAINED. AREAS SHOULD BE FERTILIZED AND RESEEDED AS
NEEDED.
8. ALL TEMPORARY EROSION AND SEDIIMENT MEASURES SHALL BE DISPOSED OF WITHIN THIRTY (30) DAYS AFTER FINAL SITE STABILIZATION IS ACHIEVED
AND VEGETATION IS ESTABLISHED. FINAL SITE STABILIZATION SHALL BE APPROVED BY THE OWNER AFTER THE INSPECTOR HAS DETERMINED THAT THE
SITE IS STABILIZED.
MANAGEMENT STRATEGIES:
THE FOLLOWING SEQUENCE OF EVENTS AND EROSION CONTROL MEASURES SHALL BE INCORPORATED INTO THE CONSTRUCTION SCHEDULE FOR THIS
PROJECT AND SHALL APPLY TO ALL CONSTRUCTION ACTIVITIES WITHIN PROJECT LIMITS.
1. CONSTRUCTION WILL BE SEQUENCED SO THAT TRENCHING AND EXCAVATION OPERATIONS CAN BEGIN AND END AS QUICKLY AS POSSIBLE.
2. SOIL STOCKPILES WILL BE PROTECTED WITH APPROPRIATE EROSION CONTROL MEASURES. STOCKPILES REMAINING FOR MORE THAN 14 DAYS SHALL
BE TEMPORARILY SEEDED.
3. THE CONTRACTOR SHALL USE APPROPRIATE CONSTRUCTION METHODS TO MINIMIZE DISTURBANCE ALONG MANAGED SLOPES AND EXISTING STEEP
SLOPES WHERE EROSION HAZARD IS HIGH.
4. ALL STORM SEWER INLETS THAT ARE MADE OPERABLE DURING CONSTRUCTION SHALL BE PROTECTED WITH INLET PROTECTION SO THAT
SEDIMENT -LADEN WATER CANNOT ENTER THE CONVEYANCE SYSTEM.
5. PREVIOUSLY GRASSED AREAS SHALL BE SEEDED AND STRAW MULCHED IMMEDIATELY AFTER TRENCHING OPERATION.
6. ALL THE EROSION AND SEDIMENT CONTROL MEASURES SHALL BE INSPECTED 48 HOURS AFTER EVERY RAIN EVENT GREATER THAN 0.25 INCHES AND
EVERY 5 DAYS EVEN IF A RAIN EVENT DOES NOT OCCUR. REQUIRED REPAIRS SHALL BE MADE AS NEEDED TO MAINTAIN DESIGNED STANDARD.
7. PERMANENT VEGETATION SHALL NOT BE CONSIDERED ESTABLISHED UNTIL A GROUND COVERED IS ACHIEVED THAT IS UNIFORM, MATURE ENOUGH TO
SURVIVE AND WILL INHIBIT EROSION.
8. THE CONTRACTOR SHALL BE RESPONSIBLE FOR ALL THE INSTALLATION AND MAINTENANCE OF ALL EROSION AND SEDIMENT CONTROL PRACTICES
MINIMUM STANDARD COMPLIANCE:
MS -1 HAVE TEMPORARY AND PERMANENT STABILIZATION BEEN ADDRESSED IN THE NARRATIVE? HAVE THE PROPOSED PRACTICES BEEN SHOWN ON
THE PLAN? YES
SEED SPECIFICATION YES MULCHING YES GRAVEL YES
MS -2 HAS STABILIZATION OF SOIL: STOCKPILES BEEN ADDRESSED IN THE NARRATIVE? YES.
IS SEDIMENT TRAPPING MEASURES PROVIDED? YES.
MS -3 HAS MAINTENANCE OF PERMANENT STABILIZATION BEEN ADDRESSED? YES.
MS -4 ARE SEDIMENT TRAPPING FACILITIES TO BE CONSTRUCTED AS A FIRST STEP IN LDA? YES.
MS -5 HAS STABILIZATION OF EARTIHEN STRUCTURES BEEN ADDRESSED? YES.
MS -6 ARE SEDIMENT BASINS REQUIRED WHERE NEEDED? NO. N/A.
MS -7 HAS STABILIZATION OF CUT AND FILL SLOPES BEEN ADEQUATELY ADDRESSED? YES.
MS -8 ARE PAVED FLUMES, CHANNELS OR SLOPED DRAINS REQUIRED WHERE NECESSARY? N0. N/A.
MS -9 HAS STABILIZATION THROUGH SURFACE ROUGHENING OR OUTLET PROTECTION BEEN ADDRESSED? YES.
MS -10 IS ADEQUATE INLET PROTECTION REQUIRED ON ALL OPERATIONAL STORM SEWER INLETS? YES.
MS -11 HAS MAINTENANCE OF PERMANENT STABILIZATION BEEN ADDRESSED? YES.
MS -12 ARE IN STREAM CONSTRUCTION MEASURES REQUIRED SO THAT CHANNEL DAMAGE IS MINIMIZED? NO. N/A.
MS -13 ARE TEMPORARY STREAM CROSSINGS OF NON -ERODIBLE MATERIAL REQUIRED WHERE APPLICABLE? NO. N/A.
MS -14 THIS REGULATION REQUIRES THAT ALL APPLICABLE FEDERAL, STATE AND LOCAL REGULATIONS PERTAINING TO WORKING IN OR CROSSING LIVE
WATERCOURSES BE FOLLO"VED. NO. N/A.
MS -15 HAS RESTABILIZATION OF AREAS SUBJECT TO INSTREAM CONSTRUCTION BEEN ADEQUATELY ADDRESSED? NO. N/A
MS -16 IS STABILIZATION OF UTILITY TRENCHES ADDRESSED? YES.
MS -17 IS THE TRANSPORT OF SOIL AND MUD ONTO PUBLIC ROADWAYS PROPERLY CONTROLLED? (I.E. CONSTRUCTION ENTRANCES, WASH RACKS,
DAILY CLEANING OF ROADWAYS, TRANSPORT OF SEDIMENT TO A TRAPPING FACILITY) YES.
MS -18 HAS THE REMOVAL OF TEMPORARY PRACTICES BEEN ADDRESSED? YES.
HAS MAINTENANCE OF PRACTICES BEEN ADDRESSED? (I.E. REPAIR OF STRUCTURES AND REMOVAL OF ACCUMULATED SEDIMENT) YES.
MS -19 ARE PROPERTIES AND WATERWAYS DOWNSTREAM FROM DEVELOPMENT ADEQUATELY PROTECTED FROM EROSION AND SEDIMENT DEPOSITION
DUE TO INCREASES IN PEAK STORM WATER RUNOFF? YES.
SEQUENCE OF CONSTRUCTION:
1. CONTRACTOR SHALL CONDUCT A PRE, CONSTRUCTION MEETING WITH THE PLAN APPROVING AUTHORITY PRIOR TO ANY LAND DISTURBANCE OR E&S CONTROL
INSTALLATIONS.
2. INSTALL CONSTRUCTION ENTRANCE, PERIMETER CONTROLS AND TREE PROTECTION PRIOR TO ANY DISTURBANCE.
3. INSTALL STORMWATER INLET PROTECTION AROUND EXISTING DRAINAGE STRUCTURES.
4. PROTECT PERMANENT VEGETATION F(OR THE DURATION OF THE PROJECT.
5. CONSTRUCT NEW STORM STRUCTURES, IF APPLICABLE, STARTING AT THE DOWNSTREAM TERMINUS OR TIE-IN.
6, BACKFILL EXCAVATION AND TRENCH AREAS.
7. FOR GRASSY AREAS: INSTALL PERMANENT SEEDING AND MULCH. STABILIZE ALL DISTURBED AREAS.
8. FOR GRAVEL AREAS: RESTORE GRAVEL AFTER TRENCHING AND EXCAVATION OPERATIONS ARE COMPLETE.
9. REPAIR ANY EROSION AND REMOVE ANY SEDIMENT.
10. DRESS AND OVER -SEED ALL DISTURBED AREAS AS NECESSARY TO AFFECT PERMANENT VEGETATIVE COVER. STABILIZE ALL REMAINING DISTURBED AREAS
WITH TOPSOIL, SEED, AND MULCH ONCE WORK IS COMPLETE.
11. AFTER FINAL SITE STABILIZATION AND APPROVAL FROM THE APPROPRIATE EROSION AND SEDIMENT CONTROL AUTHORITY, THE SILT FENCE, INLET PROTECTION
AND OTHER STABILIZATION MEASURES SHALL BE REMOVED.
Pon
r-
OP
�O �
0 oB/27/2078
DANIEL C. HYER
Lic. No. 45596
d�
IONAL E�
APPROVED DCH.
j,
REC T 1800100
nl W= P`, imp
1�
X1001
ALL TREES IN A TREE PROTECTION AREA
OR ISOLATED SPECIMENS THAT ARE: NOT
SPECIFICALLY SHOWN TO BE REMOVED
ARE TO BE SAVED. ANY EXCAVATION OR
TRENCHING WHICH IMPACTS THE ROOT
SYSTEM OR CROWN BRANCHING OFTREE(S)
NEEDS TO BE CARRIED OUT FOLLOWING THE
GUIDELINES OF THE TREE PRESERVATION
SPECIFICATIONS. THE SERVICES OF' A
CERTIFIED ARBORIST SHALL BE REQUIRED.
SEE CIVIL DRAWINGS FOR LOCATION OF
TREE PROTECTION FENCING,
TEMPORARY, PARTIAL RELOCATIONS OF
ENCLOSURE WILL BE ALLOWED TO
ACCOMMODATE CONSTRUCTION NE'CCESSARY
WITHIN DRIPLINE. AS WORK WITHIN DRIPLINE
CONCLUDES, ENCLOSURES SHALL BE
REPLACED 18" BEYOND EXTENT OF DRIPLINE.
TREE PROTECTION FENCE:
8'-0" HT CHAINLINK (2" MESH, 11 GA. FABRIC)
CONSTRUCTION FENCE PANELS SET ON GRADE
SECURED BY MEANS OF CONCRETE BASES. TREE
PROTECTION FENCE SHALL NOT BE SECURED BY
PENETRATING THE EXISTING GRADE..
,
TEMPORARY SEEDING OR TEMPORARY
STABILIZATION MATTING FULL PERIMETER
OF DIVERSION SEE SEEDING SCHEDULES
I
ST -1
Drainage Area (Ac)
Required Storage
Elevations
'Coral letCl:1 or RC',SlGentli3l Ket1tU14;y BI�.IegYa:;s-
CONTOUR
`idFla-!U31nt nana� 1 a4"Jtl
T&I Fe5 lle'
Incr,
Vol.
Incr.
Vol.
Cum.
Vol.
2.88 386 ICY
193 Wet Storage 689.44
193 Dry Storage 691.50
Top of
692.50
embankment
WET
Embankment 50%
DRY Slope (%)
G' neral SI<> e i3 i of ,e4s1
L
W
Area
Elevation
(Ft)
(Ft)
(S F)
(CF)
(CY)
(CY)
686.00
65
14
925
0
0
0
688.00
73
22
1587
2512
93
93
689.00
77
25
1945
1766
65
158
690.00
81
29
2328
2137
79
238
691.00
85
32
2737
2533
94
331
692.00
89
36
3170
2954
109
441
O TREE PROTECTION O TEMPORARY DIVERSION O
=
CONSTRUCTION O
(WI TII WIRD'
1. SET POSTS AND EXCAVATE A 4"X4"
TRENCH UPSLOPE ALONG THE LINE
OF POSTS.
Y r
FLOW
F A SIL T FENCE
SUPPORT)
2. STAPLE WIRE FENCING TO THE POSTS.
3. ATTACH THE FILTER FABRIC TO THE WIRE
FENCE AND EXTEND IT INTO THE TRENCH.
4. BACKFILL AND COMPACT THE
EXCAVATED SOIL.
;l v 's
�W' .. ,1'���
I
+ iiia j
EXTENSION• BR
Source: Adapted from Installation of Straw and Fabric Filter
Barriers for Sediment Control, Sherwood and Wyant
111-24
3.05
Plate 3.05-1
TABLE 3.31-B
(REVISED JUNE 2003)
TEMPORARY SEEDING SPECIFICATIONS
QUICK REFERENCE FOR ALL REGIONS
APPLICATION SPECIES APPLICATION RATES
- 50/50 rlix o Annual Ryegrass
SopI. 1- Fob. 1-5 (L -dm l multi-flornn;) & Cereal 50-100 (lbs/acre)
(\N"ii iter) Rye (S&,2do CB"eale!
Feb. 16-Apl. ;C Annual (;ye rass(Iolum indli florum) 60-100 (Ihs!acre,
M�ay1 Aug. 31 Oemtan'�.1111st
FERTILIZER & LIME
.-.a._ Apply 10-10-10 Funilaer at a rate ni 450 I( '/ � _te (or 10 Ibs.;' 1000 s:I. ft.)
Apply Pulveri:. d Agrtr_tl'Yurat Lirnestor at a rate of 2 t ,n1 acre (or 90 Ibs, / 1.000 sq. ft.)
NG7E:
1..A so ! test is nac - ,saty to irIetetnirto the actrial amount of Lim requited to acqust the Sall pH of site.
2, Incorporate the lime arld fertilizer ittto 11 to top 4-6 inches of the soil by disking or by other means.
3. When ripply^ng S!oa.;y Available Niito en, uae rags available it Er+;si:;rl & Seditnant Control Technical Bu':!r tm t4
2003 Nutrient M. 1 nt.en;ent r DeveloUrn - 1 t it's at hit �y '/vry �d dc�a v:i'2tnl w; Fror?f ams/wa er lSlormwatet:r
M21:a wine-} P3„Y�I tcat ,n1-a.a5'ix
TABLE 3.32-D
(REVISED JUNE 2003)
PERMANENT SEEDING SPECIFICATIONS FOR PIEDMONT AREA
SEED'
LAND USE SPECIES APPLICATION RATES PER ACRE
Tall Fescue' 953-10096
IVlirllmtlln Care Lawn Paten l li%al Ryegrasr.
'Coral letCl:1 or RC',SlGentli3l Ket1tU14;y BI�.IegYa:;s-
Total: 175 --?00 Ibs
`idFla-!U31nt nana� 1 a4"Jtl
T&I Fe5 lle'
Total: 200 JO lbs.
JM67
Fall Fesate
1L28Ibs.
G' neral SI<> e i3 i of ,e4s1
Red Top Giass o Creep,rig Red Fescue
Seasonal Nurse Crut)'
215s.
20 Ib_.
Total: 11-50 1bsIbs.
rail `resale'`
1L081bs.
Low-^.,taintanan e Slu
Red Top Grass of creeping Red Fescue
Seasonal Nurse Cm'
2 lbs.
20 lbs.
Ste l, -;r than .3 -L)
crown tch °
20 lbs.
Total' 11501bs.
i -w T dieting 'atiEti' O ilrf t- s,iisetheVilginiaC;,I)Itll(}IJL'. fTl'-PltAssuu If VII(VCL4jre ointTlend.ed
turtgrass variety list. Quality se,d will boar a lauel indicating that they are apptoJed by VCIA. A current t. rfgfasss variety
Illi is avallal le at the local County y Extens n afr e os through ti CIA t 804 746 4384 or at
tltip'//sndan.cses.vt.eUu'htn r7urY'tulU1'ulill.a cns;lunll;at n -.html
2. Use seasonal nurse clop In a�,cordance with the y rdirg dates as stated Le ow:
FeNt.tary 16`i' . Argil ..................................... Annual Rye
May t t - August 15 ........................................ Foxtail M.IIIet
August 16.:h - Oclr;iJeY...................................... Annual Rye
November- February 15 t1' .................................. Winter Rye
3 Substituts Senca e I' sred 7a for Cto+ tiv tit east f 1 a Irvin V. t v a through S' ptelnLAer rise hulled seen,, all
Otijor PeJOOS, I ISP Und Ulled 2r .F: a 1 If I t.p e' is lis j. It ;:tea e Talo - 30 Ibis / e . f We plug Lovegiass is U`Srd,
includo in any slope or I", ,%, inaintenanco mixture dating wanner Geding pe_ti ods, Ill.rt.ase to 30 -40.
_,,,......,....__�._
FERTILIZER AIME
Apply 10-20-10 Fertili er at a rate of 500 ih,,/acre (or 12 Ibs.;' 1,CC0 scl. ft.;
Apply Pulvanl<ed Agricullural Ltrnestone at a rata_ of 2 tonsjac e (or 90lbs./ 1,000 sq. ft.)
NOTE:
- A soil test is necessary to dreterrnina the aattrai amount of dime required to adjust the soil pl'1 of site.
- Incorporate the Ilmn and fertilizer into the top 4-6 incises of the soil by di�sking of by other means.
- Vdhen applying glorAy Available Nitrogen, use rates available in Err__ �sion & Sedmictit Control Technical Bulletin
2003 Pduirient:✓<anat;amentfor OevelulrtT7entSi'es at httC2y vww.de4,vir Iris.2ovlPro¢ramsiwaterlStarmwatezrY
1�'enagement/Publl atic,� .asl�n
1992
SEDIMENT TRAP VOLUME COMPUTATIONS
z
j is 1 a -
67 CU. YD./ACRE , \
4' MAX. \`
(EXCAVATED)
FILTER CLOTH ORIGINAL
GROUND
ELEV.
�>x
*SEE PLATE 3.13-1 COARSE AGGREGATE CLASS I RIPRAP
CROSS SECTION OF OUTLET
CLASS I RIPRAP
LENGTH (IN FEET) :=
6 X DRAINAGE AREA
(IN AC.)
DIVERSION
DIKE
COARSE AGGREGATE /
EXCAVATED FILTER CLOTH
AREA
* COARSE AGGREGATE SHALL BE VDOT #3, #357 OR #5
OUTLET (PERSPECTIVE VIEW)
Source: Va. DSWC
OSILT FENCE O SEEDING SCHEDULES O
111-76
Plate 3.13-2
112
LU
z
11 OP
08o2l/z018
DANIEL C. HYER
Llc. No. 45596
1 ON AL
r'�°:�` P e �`�/ .D DOH
Tl
B
: -r
a'.g �F 1806100
0 R 9` 0
C1.3
1' I VARIABLE
ORIGINAL
VARIABLE*
GROUND
ELEV.
CU. YD./ACRE
JM67
67 CU. YD./ACRE , \
4' MAX. \`
(EXCAVATED)
FILTER CLOTH ORIGINAL
GROUND
ELEV.
�>x
*SEE PLATE 3.13-1 COARSE AGGREGATE CLASS I RIPRAP
CROSS SECTION OF OUTLET
CLASS I RIPRAP
LENGTH (IN FEET) :=
6 X DRAINAGE AREA
(IN AC.)
DIVERSION
DIKE
COARSE AGGREGATE /
EXCAVATED FILTER CLOTH
AREA
* COARSE AGGREGATE SHALL BE VDOT #3, #357 OR #5
OUTLET (PERSPECTIVE VIEW)
Source: Va. DSWC
OSILT FENCE O SEEDING SCHEDULES O
111-76
Plate 3.13-2
112
LU
z
11 OP
08o2l/z018
DANIEL C. HYER
Llc. No. 45596
1 ON AL
r'�°:�` P e �`�/ .D DOH
Tl
B
: -r
a'.g �F 1806100
0 R 9` 0
C1.3
Albemarle County Design Standards Manual — Engineering
SM -2A ASPI
k- j q1N 0,
. . ......
.................
MN. 2`" BASE
PROFILF
t—ASPIL-AU PNVE
F-0
I t FXIS�Jl C'
2% 2 ..V •N I'
+
2 % 12" %,LN.
Fii TFR �l 2,711
SECTION A—A
A niittimuni watei% tap of 1 iidi must be instafted vitha niiiiiII111111 I ilich baffeod�
shutoff valve ho,.e with a charlletl f of 1.5 illche,for adequate
con--4ant pressure, "V ash water must bt carried away from the etitrance to all
approved ;settling= aiva to fejjj(�ve sedinient, --All sediment shall be prevented frc)w
enteril�g storin drains, ditches ot
PAVED WASH RACK
INO ALL
CONSTRUCTION ENTRANCE WITH WASH RACK
1992 3.07
E " AVATD DROP INLET
XIm L
z"
SE DUME]VT TRAP
F
FLOW
k If I)
FLOW FLOW
SEDIMENT -LADEN RUNOFF
DEPTH BELOW TOP OF INLET'
REQUIRED
A3 MIN. V- MAX
2'
. . ........
MAX. SLOPE: 2:
STORM WATER WITH
LARGER PARTICLES
REMOVED
DRAIN INLET
WEEP
HOLES
FOR
DEWATERING
1.
LARGER PARTICLES
SETTLE OUT
SPECIFIC APPLICATION
THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE HEAVY FLOWS
ARE EXPECTED AND WHERE AN OVERFLOW CAPABILITY AND EASE OF
MAINTENANCE ARE DESIRABLE,
Source: Michigan Soil Erosion and Sediment
Control Guidebook, 1975, and USDA -SCS Plate 3.07-4
111-39
0RATE INLET PROTECTION
1992
SIL T FENCE C UL VER T INLE T
PROTECTION
ENDWALL
----------
TOE OF FILL -Y IL !'k k11tCRT
----------------- --
------
TOE OF FILL
SILT FENCE DISTANCE IS 6' MINIMUM IF FLOW
IS TOWARD EMBANKMENT
FLOW
0 P 771TONAL STONE COMBINA TIOAT
1.5-
_I
F
FLOW
VDOT #3, #357 OR #5 COARSE AGGREGATE
TO REPLACE SILT FENCE IN " HORSESHOE " WHEN
HIGH VELOCITY OF FLOW IS EXPECTED
Source: Adapted from VDOT Standard
Sheets and Va. DSWC
111-49
CULVERT INLET PROTECTION
1992
I RIPRAP
1992
TYPICAL TREA TMENT I
(SOIL STABILIZATION BLANKET)
INSTALLATION CRITERIA
ANCHOR SLOT
BQ_TE.*
APPROXIMATELY 200 STAPLES REQUIRED
PER 100 SQ. YD5, OF MATERIAL ROLL.
ANCHOR SLOTS, JUNCTION SLOTS do
CHECK SLOTS TO BE BURIED 6' TO 12!',
MAX. 4:1 OR FLATTER
4 57 MAX, STEEPER THAN 4:1
JUNCTION SLOT
EDGE AND END JOINTS
CHECK SLOT* TO BE SNUGLY ABUTTED
(JUTE MESH WILL HAVE
TERMINAL FOLD STAPLED LAP JOINT IN
LIEU OF EDGE JOINT)
LAP JOINT 2" MIN.
TAMP FIRMLY (JUTE MESH ONLY)
ANCHOR SLOT 5' MAX, 4:1 OR FLATTER
3' MAX. STEEPER THAN 4-:1
2"
O
`�
Er T 12'
TO
FTAMP CHECK SLOT
FIRMLY dig
C roV2-
3.36
CHECK SLOT
1' TO Z
VAR,
6' TO 8' MIN, PLAN VIEW
STAPLING DIAGRAM
*CHECK SLOTS AT MIN.
STAPLE FORMED FROM NO.11 STEEL WIRE. 50' C -C INTERVALS;
8" STAPLE MIN. LENGTH FOR SANDY SOIL NOT REQ. -D WITH ALL
6r STAPLE MIN. LENGTH FOR OTHER SOIL. -comeiNATION"BL-ANKETS
JUNCTION SLOT
—
2^ FIRMLY Er. TO 12'
12" 4—
Plate 3.08-1 Source: VDOT Road and Bridge Standards
3.36
TvIl"ICAL ORIENTA TION OW
TINEA TMENT - I
(SOIL STABILIZATION BLANKET)
SHALLOW
ON SHALLOW SLOPES, STRIPS OF
NETTING PROTECTNE COVERINGS
MAY BE APPLIED ACROSS
THE SLOPE,
BERM
WHERE THERE IS A BERM AT THE TOP OF THE SLOPE,
BRING THE MATERIAL OVER THE BERM AND ANCHOR IT
BEHIND THE BERM.
ON STEEP SLOPES, APPLY
PROTECTIVE COVERING PARALLEL
TO THE DIRECTION OF FLOW
AND ANCHOR SECURELY.
47
BRING MATERIAL DOWN TO A LEVEL AREA BEFORE
TERMINATING THE INSTALLATION. TURN THE END
UNDER 9 AND STAPLE AT IZ INTERVALS.
12"
Source: Adapted from Ludlow Products Brochure
IN DITCHES, APPLY PROTECTIVE COVERING
PARALLEL TO THE DIRECTION OF FLOW,
USE CHECK SLOTS AS REQUIRED. AVOID
JOINING MATERIAL IN THE CENTER OF
THE DITCH IF AT ALL POSSIBLE
Plate 3,36-1
111-361
EC -2 SOIL STABILIZATION BLANKET ORIENTATION
TERMINAL FOLD
27
Plate 3.36-2
111-362
EC -2 SOIL STABILIZATION BLANKET INSTALLATION
SEDIMENT SHALL BE REMOVED FROM
BEHIND CHECK DAMS WHEN IT HAS
ACCUMULATED TO ONE HALF OF THE
ORIGINAL HEIGHT OF DAM.
OCHECK DAM
COARSE AGGREGATE
11P
I No a
XL
0611 owe]
O TRENCHING EROSION CONTROL
PITY OUTLET CONDITIONS
A A
'IPE OUTLET TO FLAT
REA WITH NO DEFINED
!HANNEL
L a
0 % ------
d
SECTION A -A FILTER CLOTH KEY IN 6"-9"; RECOMMENDED FOR ENTIRE PERIMETER
3d0 (MIN.)
'IPE OUTLET TO WELL
)EFINED CHANNEL
11
d
6;
Tmj�
SECTION A -A T
FILTER CLOTH KEY IN 6"-9'; RECOMMENDED FOR ENTIRE PERIMETER
NOTES: 1. APRON LINING MAY BE RIPRAP, GROUTED RIPRAP, GABION
BASKET, OR CONCRETE.
2. La IS THE LENGTH OF THE RIPRAP APRON AS CALCULATED
USING PLATES 3.18-3 AND 3.18-4.
3. d = 1,5 TIMES THE MAXIMUM STONE DIAMETER, BUT NOT
LESS THAN 6 INCHES.
PIPE
APRON
APRON WIDTH
L-0
D � L� V11:'
EXTEIIF�j IH
DISCHARGE
10 Q��_'TVIE
OF INCRESS A,\E� LGRE'.ZS,
1.1f."A" I
SPAN
LENGTH
UPSTREAM
DOWNSTREAM
PLAN
RIP RAP
CONDITION
(Q10)
(Vio)
CLASS
j SEDIVEN-1
(Do)
ING U_Vl ICE
(La)
(3 DO)
(W)
Fii TFR �l 2,711
SECTION A—A
A niittimuni watei% tap of 1 iidi must be instafted vitha niiiiiII111111 I ilich baffeod�
shutoff valve ho,.e with a charlletl f of 1.5 illche,for adequate
con--4ant pressure, "V ash water must bt carried away from the etitrance to all
approved ;settling= aiva to fejjj(�ve sedinient, --All sediment shall be prevented frc)w
enteril�g storin drains, ditches ot
PAVED WASH RACK
INO ALL
CONSTRUCTION ENTRANCE WITH WASH RACK
1992 3.07
E " AVATD DROP INLET
XIm L
z"
SE DUME]VT TRAP
F
FLOW
k If I)
FLOW FLOW
SEDIMENT -LADEN RUNOFF
DEPTH BELOW TOP OF INLET'
REQUIRED
A3 MIN. V- MAX
2'
. . ........
MAX. SLOPE: 2:
STORM WATER WITH
LARGER PARTICLES
REMOVED
DRAIN INLET
WEEP
HOLES
FOR
DEWATERING
1.
LARGER PARTICLES
SETTLE OUT
SPECIFIC APPLICATION
THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE HEAVY FLOWS
ARE EXPECTED AND WHERE AN OVERFLOW CAPABILITY AND EASE OF
MAINTENANCE ARE DESIRABLE,
Source: Michigan Soil Erosion and Sediment
Control Guidebook, 1975, and USDA -SCS Plate 3.07-4
111-39
0RATE INLET PROTECTION
1992
SIL T FENCE C UL VER T INLE T
PROTECTION
ENDWALL
----------
TOE OF FILL -Y IL !'k k11tCRT
----------------- --
------
TOE OF FILL
SILT FENCE DISTANCE IS 6' MINIMUM IF FLOW
IS TOWARD EMBANKMENT
FLOW
0 P 771TONAL STONE COMBINA TIOAT
1.5-
_I
F
FLOW
VDOT #3, #357 OR #5 COARSE AGGREGATE
TO REPLACE SILT FENCE IN " HORSESHOE " WHEN
HIGH VELOCITY OF FLOW IS EXPECTED
Source: Adapted from VDOT Standard
Sheets and Va. DSWC
111-49
CULVERT INLET PROTECTION
1992
I RIPRAP
1992
TYPICAL TREA TMENT I
(SOIL STABILIZATION BLANKET)
INSTALLATION CRITERIA
ANCHOR SLOT
BQ_TE.*
APPROXIMATELY 200 STAPLES REQUIRED
PER 100 SQ. YD5, OF MATERIAL ROLL.
ANCHOR SLOTS, JUNCTION SLOTS do
CHECK SLOTS TO BE BURIED 6' TO 12!',
MAX. 4:1 OR FLATTER
4 57 MAX, STEEPER THAN 4:1
JUNCTION SLOT
EDGE AND END JOINTS
CHECK SLOT* TO BE SNUGLY ABUTTED
(JUTE MESH WILL HAVE
TERMINAL FOLD STAPLED LAP JOINT IN
LIEU OF EDGE JOINT)
LAP JOINT 2" MIN.
TAMP FIRMLY (JUTE MESH ONLY)
ANCHOR SLOT 5' MAX, 4:1 OR FLATTER
3' MAX. STEEPER THAN 4-:1
2"
O
`�
Er T 12'
TO
FTAMP CHECK SLOT
FIRMLY dig
C roV2-
3.36
CHECK SLOT
1' TO Z
VAR,
6' TO 8' MIN, PLAN VIEW
STAPLING DIAGRAM
*CHECK SLOTS AT MIN.
STAPLE FORMED FROM NO.11 STEEL WIRE. 50' C -C INTERVALS;
8" STAPLE MIN. LENGTH FOR SANDY SOIL NOT REQ. -D WITH ALL
6r STAPLE MIN. LENGTH FOR OTHER SOIL. -comeiNATION"BL-ANKETS
JUNCTION SLOT
—
2^ FIRMLY Er. TO 12'
12" 4—
Plate 3.08-1 Source: VDOT Road and Bridge Standards
3.36
TvIl"ICAL ORIENTA TION OW
TINEA TMENT - I
(SOIL STABILIZATION BLANKET)
SHALLOW
ON SHALLOW SLOPES, STRIPS OF
NETTING PROTECTNE COVERINGS
MAY BE APPLIED ACROSS
THE SLOPE,
BERM
WHERE THERE IS A BERM AT THE TOP OF THE SLOPE,
BRING THE MATERIAL OVER THE BERM AND ANCHOR IT
BEHIND THE BERM.
ON STEEP SLOPES, APPLY
PROTECTIVE COVERING PARALLEL
TO THE DIRECTION OF FLOW
AND ANCHOR SECURELY.
47
BRING MATERIAL DOWN TO A LEVEL AREA BEFORE
TERMINATING THE INSTALLATION. TURN THE END
UNDER 9 AND STAPLE AT IZ INTERVALS.
12"
Source: Adapted from Ludlow Products Brochure
IN DITCHES, APPLY PROTECTIVE COVERING
PARALLEL TO THE DIRECTION OF FLOW,
USE CHECK SLOTS AS REQUIRED. AVOID
JOINING MATERIAL IN THE CENTER OF
THE DITCH IF AT ALL POSSIBLE
Plate 3,36-1
111-361
EC -2 SOIL STABILIZATION BLANKET ORIENTATION
TERMINAL FOLD
27
Plate 3.36-2
111-362
EC -2 SOIL STABILIZATION BLANKET INSTALLATION
SEDIMENT SHALL BE REMOVED FROM
BEHIND CHECK DAMS WHEN IT HAS
ACCUMULATED TO ONE HALF OF THE
ORIGINAL HEIGHT OF DAM.
OCHECK DAM
COARSE AGGREGATE
11P
I No a
XL
0611 owe]
O TRENCHING EROSION CONTROL
PITY OUTLET CONDITIONS
A A
'IPE OUTLET TO FLAT
REA WITH NO DEFINED
!HANNEL
L a
0 % ------
d
SECTION A -A FILTER CLOTH KEY IN 6"-9"; RECOMMENDED FOR ENTIRE PERIMETER
3d0 (MIN.)
'IPE OUTLET TO WELL
)EFINED CHANNEL
11
d
6;
Tmj�
SECTION A -A T
FILTER CLOTH KEY IN 6"-9'; RECOMMENDED FOR ENTIRE PERIMETER
NOTES: 1. APRON LINING MAY BE RIPRAP, GROUTED RIPRAP, GABION
BASKET, OR CONCRETE.
2. La IS THE LENGTH OF THE RIPRAP APRON AS CALCULATED
USING PLATES 3.18-3 AND 3.18-4.
3. d = 1,5 TIMES THE MAXIMUM STONE DIAMETER, BUT NOT
LESS THAN 6 INCHES.
NOTE: COMPUTATIONS PER VESCH STANDARD 3.18
$ OUTLET PROTECTION COMPUTATIONS AND DETAIL
z
Uj
LU
z
z
LAj
PIPE
APRON
APRON WIDTH
APRON WIDTH
TAILWATER
DISCHARGE
VELOCITY
VDOT
STR_#
SPAN
LENGTH
UPSTREAM
DOWNSTREAM
D50
RIP RAP
CONDITION
(Q10)
(Vio)
CLASS
(Do)
(La)
(3 DO)
(W)
THICKNESS
FEET
INCHES
CFS
FPS
FEET
FEET
FEET
FEET
Culvert A
2
24
1 12-01
1 9-00
1 1 0
6
10
11
1.6
3.6
BMP Outfall
2
1 1 18
7-28
1 S -88
10
4.5
&5
it
1.6
NOTE: COMPUTATIONS PER VESCH STANDARD 3.18
$ OUTLET PROTECTION COMPUTATIONS AND DETAIL
z
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LU
z
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LAj
Ll
OP7%
0,12712018
0
2
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DANIEL I �EL C. HYELR:-
LIC. No. 45596
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W R K
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NOTE TO CONTRACTOR: FINISHED
GRADE ELEVATIONS SHOWN ON
PLANS HEREIN REFER TO TOP OF
FUTURE ASPHALT GRADE.
-)
L '41 /"v':/—
Z/ J�J
/
F
z!
INV. 694.11--,-��
I
OUTLET PROTECTION
SEE SHEET C1.4 FOR DETAILS
10'x10'RIPRAP
STILLING BASIN
10
Ir
0
0
-1
(c)
Rgt
Nr 704.02 HF
TIE INTO EXISTING
GRAVEL DRIVE
20' TIMBER LEVEL. SPREADER WITH STILLING BASIN
SEE SHEET 03.1 FOR COMPUTATIONS AND DETAILS
PROPOSED SITE PLAN
I" = 301 30 60
I
I
m
Op
0-
0, 312 � /2, Q A 3
DANIEL C. HYER
Lic. No. 4559
IONAL
DCH
u f-31, IM T
1806100
R
R
A
+
ff
10
Ir
0
0
-1
(c)
Rgt
Nr 704.02 HF
TIE INTO EXISTING
GRAVEL DRIVE
20' TIMBER LEVEL. SPREADER WITH STILLING BASIN
SEE SHEET 03.1 FOR COMPUTATIONS AND DETAILS
PROPOSED SITE PLAN
I" = 301 30 60
I
I
m
Op
0-
0, 312 � /2, Q A 3
DANIEL C. HYER
Lic. No. 4559
IONAL
DCH
u f-31, IM T
1806100
R
R
A
+
4' CONTOURS FROM
COUNTY GIS
/ DRAINAGE AREA A
TO EXISTING CULVERT A
TOTAL AREA = 4.37 AC
CN = 63
Tc = 9.7 MIN
_ -- 4
N POSTDEVELOPMENT DRAINAGE MAP
2 1" = 60' 60 120
DRAINAGE AREA A:
TOTAL AREA = 4.37 AC
Q1
= 2.52 CFS
Q2=4.79 CFS
Q10 = 13.03 CFS
DRtAINAGE AREA B:
TOTAL AREA = 1.07 AC
Q1=0.40 CFS
Q2 = 0.85 CFS
Q10=2.59 CFS
DRAINAGE AREA C:
TOTAL AREA = 3.98 AC
Q1=1.47 CFS
Q2=3.15 CFS
Q10 = 9.62 CFS
DRAINAGE AREA D:
TOTAL AREA = 0.96 AC
Q1 = 0.42 CFS
Q2 = 0.88 CFS
Q10=2.60 CFS
POST -DEVELOPMENT RUNOFF
DRAINAGE AREA A:
TOTAL AREA = 4.50 AC
CONTRIBUTING SITE AREA = 0.23
Q1=2.20 CFS
Q2=4.30 CFS
Q10=12.01 CFS
DRAINAGE AREA B:
TOTAL AREA = 0.30 AC
CONTRIBUTING SITE AREA = 0.06 AC
Q1 =.018 CFS
Q2=0.34 CFS
Q10 = 0.93 CFS
DRAINAGE AREA C (Cl AND C2 COMBINED)
INCLUDING RUNOFF REDUCTION AND ROUTING:
TOTAL AREA = 4.46 AC
CONTRIBUTING SITE AREA = 2.06 AC
Q1= 0.89 CFS
Q2 = 2.23 CFS
Q10=3.76 CFS
DRAINAGE AREA D:
TOTAL AREA = 1.11 AC
CONTRIBUTING SITE AREA = 1.11 AC
Q1=0.89 CFS
Q2=1.53 CFS
Q10=3.76 CFS
m
t. LLC
4�N'TH
0p
0 812 712 0 1 8
DANIEL C. HYER'
Lic. No. 45596
.4 f% l
ION AL E�m
.PEve :% V 'El DCH
DCH
1806100
STORMWATER MANAGEMENT NARRATIVE
LEGEND
-
SITE AR EA - 150 540 SF 3.46 AC
WATER QUALITY
INA - -
CCORDAN E WITH VA 25 7 6 A 1 THIS APP L
C 9 C 8 0 3 S LIGATION I REQUIRED T ENSURE THE TOTAL PHOSPHORUS S 0 S P OSP OROS LOAD FROM THE DEVELOPED SITE DOES NOT EXCEED ULT IN THE
0 S 0 C 0.41 LBS PERACRE RE PER YEAR. THIS RESULTS Q
C
REQUIREMENT LISTED BELOW. A LEVEL 1 BIORETENTION FILTER IS PROPOSED TO MEET PART OF THIS REQUIREMENT, AND THE REMAINING PHOSPHORUS REMOVAL WILL BE MET WITH AN OFFSITE OPTION PER
ONSITE IMPERVIOUS AREA - 0.53 AC
9VAC25-870-65(F), SPECIFICALLY CREDIT PURCHASING. GIVEN THE ABOVE AND THE SUPPORTING DOCUMENTATION ON THE FOLLOWING SHEETS, IT IS OUR OPINION THAT THE WATER QUALITY REQUIREMENTS SET FORTH IN
9VAC25-870-63 HAVE BEEN MET.
PHOSPHORUS LOAD REMOVAL REQUIREMENT: 1.05 LBS PER YEAR
MANAGED STEEP SLOPES FROM GIS
PHOSPHORUS REMOVAL PROVIDED ONSITE (BY LEVEL 1 BMP): 0.73 LBS PER YEAR
TIME OF CONCENTRATION FLOWPATH
REMAINING PHOSPHORUS TO BE PURCHASED: 0.32 LBS PER YEAR (LETTER OF PURCHASE TO BE PROVIDED)
WATER QUANTITY
THE PROPOSED DESIGN OF THE SITE RESULTS IN FOUR SEPARATE DRAINAGE AREAS: A, B, C, AND D. WATER QUANTITY REQUIREMENTS FOR EACH DRAINAGE AREA HAVE BEEN ADDRESSED IN THE NARRATIVES BELOW IN
ACCORDANCE WITH 9VAC25-870-66.
DRAINAGE AREA A
RUNOFF FROM DRAINAGE AREA A IS CAPTURED IN A MANMADE DITCH AND CONVEYED TO PROPOSED CULVERT A, WHICH HAS BEEN DESIGNED TO MEET FLOODING AND CHANNEL PROTECTION CRITERIA (SEE COMPUTATIONS
AND PROFILE ON SHEET C3.1). AT THE OUTFALL OF PROPOSED CULVERT A, CONCENTRATED FLOW IS CONVERTED TO SHEET FLOW BY A LEVEL SPREADER DESIGNED IN ACCORDANCE WITH VA STORMWATER DESIGN
SPECIFICATION NO. 2 DESIGN CRITERIA, AND THEREFORE IS SUBJECT TO REQUIREMENTS LISTED INI 9VAC25-870-66(D) FOR SHEET FLOW. POST -DEVELOPMENT FLOWS AT THIS LEVEL SPREADER ARE LESS THAN
PRE -DEVELOPMENT FLOWS FOR THE 1, 2, AND 10 YEAR DESIGN STORMS (SEE COMPUTATIONS THIS SHEET). THEREFORE, IT IS OUR OPINION THAT THE REQUIREMENTS LISTED IN 9VAC25-870-66 HAVE BEEN MET.
DRAINAGE AREA B
RUNOFF FROM DRAINAGE AREA B CONSISTS OF SHEET FLOW FROM A SMALL PORTION OF THE SITE. DUE TO THE PROPOSED CONDITIONS CAPTURING MUCH OF THE UP -GRADIENT AREA, POST -DEVELOPMENT FLOWS FROM
DRAINAGE AREA B ARE LESS THAN PRE -DEVELOPMENT FLOWS FOR THE 1, 2, AND 10 YEAR DESIGN STORMS (SEE COMPUTATIONS THIS SHEET). SINCE ALL FLOW FROM DRAINAGE AREA B IS SHEET FLOW, AND A REDUCTION
OF FLOWS HAS BEEN ACHIEVED IN THE PREDEVELOPMENT CONDITION, IT IS OUR OPINION THAT THE WATER QUANTITY REQUIREMENTS LISTED IN 9VAC25-870-66 HAVE BEEN MET.
DRAINAGE AREA C
DRAINAGE AREA C CONSISTS OF TWO SUB -AREAS, Cl (WHICH IS DETAINED IN THE PROPOSED BMP) AND C2 (WHICH IS UNDETAINED SHEET FLOW TO CULVERT C). ONSITE AND OFFSITE RUNOFF FROM Cl IS CAPTURED IN THE
PROPOSED DRIVEWAY DITCH, WHICH HAS BEEN DESIGNED TO MEET FLOODING AND CHANNEL PROTECTION CRITERIA (SEE COMPUTATIONS ON SHEET C3.1). CONCENTRATED RUNOFF IS THEN CONVEYED TO A PROPOSED
LEVEL 1 BIORETENTION FILTER (SMP 1) WHERE IT IS DETAINED. CONCENTRATED FLOW FROM BMP :1 IS CONVEYED INTO DRAINAGE AREA C2, WHERE IT IS CONVERTED TO SHEET FLOW BY A LEVEL SPREADER DESIGNED IN
ACCORDANCE WITH VA STORMWATER DESIGN SPECIFICATION NO. 2 DESIGN CRITERIA. THEREFORE, ALL FLOW IN DRAINAGE AREA C OUTFALLS FROM THE SITE AS SHEET FLOW AND THUS IS SUBJECT TO THE REQUIREMENTS
SET FORTH IN 9VAC25-870-66(D). AS SHOWN IN THE COMPUTATIONS ON THIS SHEET, POST -DEVELOPMENT FLOWS ARE LESS THAN PRE -DEVELOPMENT FLOWS IN THE 1, 2, AND 10 YEAR DESIGN STORMS. THEREFORE, IT IS
OUR OPINION THAT THE REQUIREMENTS SET FORTH IN 9VAC25-870-66 HAVE BEEN MET.
DRAINAGE AREA D
RUNOFF FROM DRAINAGE AREA D CONSISTS OF SHEET FLOW FROM THE NORTHWEST PORTION OF THE SITE AND THEREFORE IS SUBJECT TO THE REQUIREMENTS SET FORTH IN 9VAC25-870-66(D). AS SHOWN ON THIS
SHEET, THERE IS AN INCREASE IN SHEET FLOW FROM THE PRE -DEVELOPMENT CONDITION. THEREFORE, THE DOWNSTREAM AREA HAS BEEN EVALUATED FOR POTENTIAL IMPACTS DUE TO THE INCREASE IN SHEET FLOW IN
ACCORDANCE WITH 9VAC25-870-66(D). DUE TO THE GOOD CONDITION OF THE DOWNSTREAM LANDCOVER, THE RELATIVELY LOW PEAK FLOWS, AND THE FACT THAT THE DOWNSTREAM AREA WILL NOT BE DISTURBED
DURING CONSTRUCTION, IT IS OUR PROFESSIONAL OPINION THAT THE INCREASE IN SHEET FLOW WALL NOT NEGATIVELY IMPACT THE DOWNSTREAM PROPERTIES OR RESOURCES. GIVEN THE ABOVE, IT IS OUR OPINION THAT
THE WATER QUANTITY REQUIREMENTS LISTED IN 9VAC25-870-66 HAVE BEEN MET.
DRAINAGE AREA A:
TOTAL AREA = 4.37 AC
Q1
= 2.52 CFS
Q2=4.79 CFS
Q10 = 13.03 CFS
DRtAINAGE AREA B:
TOTAL AREA = 1.07 AC
Q1=0.40 CFS
Q2 = 0.85 CFS
Q10=2.59 CFS
DRAINAGE AREA C:
TOTAL AREA = 3.98 AC
Q1=1.47 CFS
Q2=3.15 CFS
Q10 = 9.62 CFS
DRAINAGE AREA D:
TOTAL AREA = 0.96 AC
Q1 = 0.42 CFS
Q2 = 0.88 CFS
Q10=2.60 CFS
POST -DEVELOPMENT RUNOFF
DRAINAGE AREA A:
TOTAL AREA = 4.50 AC
CONTRIBUTING SITE AREA = 0.23
Q1=2.20 CFS
Q2=4.30 CFS
Q10=12.01 CFS
DRAINAGE AREA B:
TOTAL AREA = 0.30 AC
CONTRIBUTING SITE AREA = 0.06 AC
Q1 =.018 CFS
Q2=0.34 CFS
Q10 = 0.93 CFS
DRAINAGE AREA C (Cl AND C2 COMBINED)
INCLUDING RUNOFF REDUCTION AND ROUTING:
TOTAL AREA = 4.46 AC
CONTRIBUTING SITE AREA = 2.06 AC
Q1= 0.89 CFS
Q2 = 2.23 CFS
Q10=3.76 CFS
DRAINAGE AREA D:
TOTAL AREA = 1.11 AC
CONTRIBUTING SITE AREA = 1.11 AC
Q1=0.89 CFS
Q2=1.53 CFS
Q10=3.76 CFS
m
t. LLC
4�N'TH
0p
0 812 712 0 1 8
DANIEL C. HYER'
Lic. No. 45596
.4 f% l
ION AL E�m
.PEve :% V 'El DCH
DCH
1806100
' ffrA
CULVERT NAME
CULVERT DESCRIPTION
TOTAL
FLOW
(cfs)
FLOW PER
BARREL
Q/N (cfs)
HEADWATER CALCULATIONS
ELEVATION
HEADWATER
CONTROL
VELOCITY
OUT
(fps)
LOW POINT
ELEVATION
FREEBOARD
(ft).
Material -Shape -Size SLOPE LENGTH
CONTROL
OUTLET CONTROL
H Di/ HWi FALL ELHI
HWo Dc
Ho kE H ELNe
N INVo INVin MATERIAL DIA (in) (%) (ft)
Proposed Culvert A
1-24" RCP 11694.11 1 695.00 1 RCP 1 24 12.78% 1 32.00
j 12.01
1 12.01
0.89 1.79 2,68 696.79
0.71 1.24
1,24 0.50 0.89 696.24
1 696,79
1 9.00
1 698.50
1 1.71
CULVERT ANALYSIS AND COMPUTATIONS
U -
TIME OF CONCENTRATION TABULATIONS
* FOR SHALLOW CONCENTRATED FLOWS, .A MANNINGS VALUE OF 0.025 REPRESENTS A PAVED LAND COVER
CONDITION, AND A VALUE OF 0.05 REPRESENTES UNPAVED CONDITIONS.
DRAINAGE AREA: A PRE -DEVELOPMENT
LENGTH SLOPE *MANNING'S FLOW AREA WETTED VELOCITY TIME
FLOW TYPE
(FT) (%) n (SF) PERIMETER (FT) (FPS) (MIN)
SHEET 100 3.00% 0.150 7.8
SHALLOW 399 6.77% 0.050 1.6
SHALLOW 96 7.70% 0.050 0.4
TOTAL To = 9.7
DRAINAGE AREA: B PRE -DEVELOPMENT
FLOW TYPE LENGTH SLOPE *MANNING'S FLOW AREA WETTED VELOCITY TIME
(FT) (%) n (S F) PERIMETER (FT) (FPS) (MIN)
SHEET 100 4.86% 0.240 9.3
SHALLOW 367 9.71% 0.050 1.2
TOTAL To = 10.5
DRAINAGE AREA: C PRE -DEVELOPMENT
FLOW TYPE LENGTH SLOPE *MANNING'S FLOW AREA WETTED VELOCITY TIME
(FT) (%) n (S F) PERIMETER (FT) (FPS) (MIN)
SHEET 100 3.17% 0.240 11,0
SHALLOW 622 9.78% 0.050 2.1
TOTAL To = 13.1
DRAINAGE AREA: D PRE -DEVELOPMENT
FLOW TYPE LENGTH SLOPE *MANNING'S FLOW AREA WETTED VELOCITY TIME
(FT) (%) n (SF) PERIMETER (FT) (FPS) (MIN)
SHEET 100 6.15% 0.240 8.5
SHALLOW 150 6.15% 0.050 0.6
TOTAL To = 9.1
S TIME OF CONCENTRATION COMPUTATIONS
Elev (ft) Section Depth (ft)
705.00 ---T_.------- .......... - r 2.00
704.00
703.50
1 11
1.50
1.00
0.50
702.50 - ---- _- - - ----- --0.50
0 1 2 3 4 5 6 7 8 9
DRIVEWAY DITICH - 2 YEAR
DESIGN CHANNEL CROSS SECTION ANALYSIS - 2 YR STORM
DRAINAGE AREA:
A POST -DEVELOPMENT
Friction
Invert
Slope
n
Discharge
LENGTH
SLOPE
*MANNING'S
FLOW AREA
WETTED
VELOCITY
TIME
FLOW TYPE
Critical
Velocity
Specific
Froude
i LEVEL SPREADER;
Label
-Section
OF RIGID LIP
(FT)
(%)
n
(S F)
PERIMETER (FT)
(FPS)
(MIN)
SHEET
100
3.00%
0.150
Radius
Slope
Head
7.8
SHALLOW
399
6.77%
0.050
Method
Elevation
(%)
1.6
SHALLOW
157
5.70%
0.050
(ft/s)
2.74
104
0.7
14.00
TIMBER
■
I #4 EPDXY COATED REBAR
Number
TOTAL To =
10.0
DRAINAGE AREA:
C1 POST -DEVELOPMENT
_
(ft)
r
LENGTH
SLOPE
*MANNING'S
FLOW AREA
WETTED
VELOCITY
TIME
FLOW TYPE
(ft)
REBAR SHALL PENETRATE
STILLING BASIN LINING -
Driveway Ditch
Trapezoidal
Mannings
703.00
4.50%
(FT)
(%)
n
(S F)
PERIMETER (FT)
(FPS)
(MIN)
SHEET
100
7.70%
0.240
0.25
0.83
1.24
7.7
SHALLOW
306
4.50%
0.050
1.5
CHANNEL
186
2.00%
0.035
1,30
4.17
1.1
TOTAL To =
10.4
DRAINAGE AREA:
D POST -DEVELOPMENT
LENGTH
SLOPE
*MANNING'S
FLOW AREA
WETTED
VELOCITY
TIME
FLOW TYPE
(FT)
(%)
n
(S F)
PERIMETER (FT)
(FPS)
(MIN)
SHEET
100
2.14%
0.150
8,9
SHALLOW
162
3.30%
0.050
0.9
TOTAL To =
9.8
NOTE: CALCULATIONS FOR DRAINAGE AREAS NOT SHOWN HERE HAVE RESULTED IN A TIME OF
CONCENTRATION LESS THAN 6 MINUTES. IIN SUCH CASES, A To OF 6 MINUTES HAS BEEN APPLIED.
Elev (ft)
705.00
704.50
704.00
703.50
703.00
Section
Depth (ft)
2.00
702.50 - -- --- 1-- ---- --
0 1 2 3 4 5
DRIVEWAY DITCH - 10 YEAR
6 7 8
DESIGN CHANNEL CROSS SECTION ANALYSIS - 10 YR STORM
Cross -Section
Friction
Invert
Slope
n
Discharge
Normal
WSEL
Flow Area
Velocity
Wetted
Critical
Top
Hydraulic
Critical
Velocity
Specific
Froude
i LEVEL SPREADER;
Label
-Section
OF RIGID LIP
SPREADER
n
(IN/HR)
Depth
r
Perimeter
Depth
Width
Radius
Slope
Head
Energy
(FT)
Flow Type
Proposed Culvert A
Shape
Method
Elevation
(%)
Value
(ft3/s)
TIMBER
(ft)
(ft2)
(ft/s)
2.74
104
13.49
14.00
TIMBER
■
I #4 EPDXY COATED REBAR
Number
�
2'0.C. MINIMUM FOR LENGTH OF TIMBERS
_
(ft)
r
FILTER FABRIC TO BE
(ft)
(ft)
(ft)
(ft)-
(ft/ft)
(ft)
(ft)
REBAR SHALL PENETRATE
STILLING BASIN LINING -
Driveway Ditch
Trapezoidal
Mannings
703.00
4.50%
0.035
5.21
0.58
703.58
1.30
4.01
4.17
0.64
3.98
0.31
9.33%
0.25
0.83
1.24
Supercritical
DESIGN CHANNEL CROSS SECTION ANALYSIS - 10 YR STORM
O CROSS SECTION COMPUTATIONS
1.50
1.00
0.50
L -0.50
9
700
695
.•t
PROPOSED GRADE
--- -....-.._.._----------------_....._..... ........._...._._... _..... _
EXISTING GRADE
1.62' COVER
1
----------
INV. OUT=694.11
______INV.OUT=694.11 j„
INV. I N=695.00
VDiOT CL. II RIPRAP
SEE SHEET C1.4
FOR DETAILS
LEVEL SPREADER WITH STILLING BASIN
SEE SHEET C3.1 FOR DETAILS
700
695
690
0+00 0+50 1+M'DO5
CULVERT A PROFILE
SCALE: 1"=30'H; 1"=3'V
2
CULVERT A PROFILE
1" = 30' 30 60
6"x6" PRESSURE TREATED TIMBERS -
LENGTH PER PLAN
3'
"19 1911 S TO1r,ffi 1161N 010111
STILLING BASIN
Cross
Friction
Invert
Slope
MINIMUM LENGTH
Discharge
Normal
WSEL
Flow Area
Velocity
Wetted
Critical
Top
Hydraulic
Critical
Velocity
Specific
Froude
i LEVEL SPREADER;
Label
-Section
OF RIGID LIP
SPREADER
n
(IN/HR)
Depth
r
Perimeter
Depth
Width
Radius
Slope
Head
Energy
(FT)
Flow Type
Proposed Culvert A
Shape
Method
Elevation
(%)
Value
(ft3/s)
TIMBER
(ft)
(ft2)
(ft/ S)
2.74
104
13.49
14.00
TIMBER
■
I #4 EPDXY COATED REBAR
Number
�
2'0.C. MINIMUM FOR LENGTH OF TIMBERS
_
(ft)
r
FILTER FABRIC TO BE
(ft)
(ft)
(ft)
(ft)
(ft/ft),
(ft)
(ft)
REBAR SHALL PENETRATE
STILLING BASIN LINING -
Driveway Ditch
Trapezoidal
Mannings
703.00
1.73%
0.035
9.52
0.90
703.90
2.88
3.31
1 6.19
1 0.84
1 5.90
0.47
1 3.71%
0.17
1.07
0.83
Subcritical
O CROSS SECTION COMPUTATIONS
1.50
1.00
0.50
L -0.50
9
700
695
.•t
PROPOSED GRADE
--- -....-.._.._----------------_....._..... ........._...._._... _..... _
EXISTING GRADE
1.62' COVER
1
----------
INV. OUT=694.11
______INV.OUT=694.11 j„
INV. I N=695.00
VDiOT CL. II RIPRAP
SEE SHEET C1.4
FOR DETAILS
LEVEL SPREADER WITH STILLING BASIN
SEE SHEET C3.1 FOR DETAILS
700
695
690
0+00 0+50 1+M'DO5
CULVERT A PROFILE
SCALE: 1"=30'H; 1"=3'V
2
CULVERT A PROFILE
1" = 30' 30 60
6"x6" PRESSURE TREATED TIMBERS -
LENGTH PER PLAN
3'
"19 1911 S TO1r,ffi 1161N 010111
STILLING BASIN
I
TOTAL
MINIMUM LENGTH
2% MAX. FOR 10' ----
LINING AND
G
INTENSITY
RIGID LIP
WIDTH PER PLAN
i LEVEL SPREADER;
FLOW
OF RIGID LIP
OF RIGID LIP
SPREADER
j� ;...
(IN/HR)
r
MATERIAL
I�
„r
(AC)
(CFS)
a
(FT)
Proposed Culvert A
0.34
1.00
4.50
1.51
19.68
20.00
TIMBER
BMPOutfall
0.38
1.00
2.74
104
13.49
14.00
TIMBER
■
I #4 EPDXY COATED REBAR
j
�
2'0.C. MINIMUM FOR LENGTH OF TIMBERS
_
r
FILTER FABRIC TO BE
..
CONTINUOUS BELOW
REBAR SHALL PENETRATE
STILLING BASIN LINING -
GROUND 12" MIN.
NON -WOVEN GEOTEXTILE
3 -
` --
FILTER FABRIC
NOTES:
1. LEVEL SPREADER LIP SHALL BE COMPLETELY LEVEL ALONG ENTIRE LENGTH.
2. TIMBER ENDS SHALL BE KEYED INTO GROUND A MINIMUM OF 18" TO PREVENT SCOURING AROUND ENDS.
3. REBAR SHALL BE PLACED NO MORE THAN 1' FROM TIMBER ENDS.
4. CONTRACTOR SHALL NOT COMPACT STILLING BASIN AREA OR ALLOW HEAVY EQUIPMENT IN THE STILLING BASIN VICINITY TO ALLOW FOR
INFILTRATION OF PONDED RUNOFF BEHIND LEVEL SPREADER.
LEVEL SPREADER SIZING SUMMARY
7 LEVEL SPREAUEK GUMF'U I A I IUNS ANU UE I AILS
1"=1' 1 2
W1
Q
Z
Uj
Uj
Z
Z
Uj
L
TOTAL AREA TO
TOTAL
MINIMUM LENGTH
PROVIDES) LENGTH'
LEVEL
G
INTENSITY
RIGID LIP
i LEVEL SPREADER;
FLOW
OF RIGID LIP
OF RIGID LIP
SPREADER
FACTOR
(IN/HR)
MATERIAL
I�
„r
(AC)
(CFS)
(FT)
(FT)
Proposed Culvert A
0.34
1.00
4.50
1.51
19.68
20.00
TIMBER
BMPOutfall
0.38
1.00
2.74
104
13.49
14.00
TIMBER
7 LEVEL SPREAUEK GUMF'U I A I IUNS ANU UE I AILS
1"=1' 1 2
W1
Q
Z
Uj
Uj
Z
Z
Uj
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U DANIEL C. HYER'
Lic. No. 45596
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Lic. No. 45596
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Project Name.
Date.
Foglia Residence
8%23/201$
BMP Design Specifications List: 2013 Draft Stds & Specs
Site Information
Post -Development Project (Treatment Volume and Loads'
Land Cover (acres)
Constants
Annual Rainfall (inches)
43
Target Rainfall Event (inches)
1.00
Total Phosphorus (TP) EMC (mg/L)
0.26
Total Nitrogen (TN) EMC (mg/L)
1.86
Target TP Load (lb/acre/yr)
0.41.
Pj (unitless correction factor)
0.90
Runoff Coefficients flRv)
Weighted Rv (turf)
% Managed Turf
Impervious Cover (acres)
Rv (impervious)
% Impervious
Site Area (acres) 3 46
Site Rv
VRRM SITE TABULATION
► it
Drainage Area A Land Cover (acres)
Total Phosphorus Available for Removal in D.A. C (Ib/yr)
Past Development Treatment Volume in D.A. C (ft)
•. s * � � � • r r i �
FOREST/OPENArea Check,
SPACE
IMPERVIOUS COVER
IMPERVIOUS• TREATED
MANAGED TURF AREA
i ► L
Site Treatment Volume (ft)
• r •' r r r r
TP LOAD AVAILABLE FOR REMOVAL (lb/yr
• LOAD r t
TP LOAD REMAINING •
FINAL POST -DEVELOP • LOAD
TP LOAD REDUCTION REQUIRED •
TP • r REDUCTION ACHIEVED
. LOAD •
I. EMAINING
• LOAD .D• REQUIRED
r... t *..
Total Nitrogen (For Information Purposes)
POST -DEVELOPMENT LrA;.
NITROGENr+D REDUCTION ACHIEVED s
: 11 4 •r r•k1 V :r i !
s • ••ar'.
Runoff Managed Impervious Vollume from Runoff Remaining Total BMP Phosphorus Phosphorus UntreatedPhosphorus Remaining
Removal Load from Phosphorus Downstream Practice to be
Practice Reduction Turf Credit Cover Credit Upstream Reduction Runoff Treatment Removed By Phosphorus
Credit l Area acres Area acres Practice ftp � 3 � Efficiency Upstream Load to Employed
( } (acres) (acres) ( } (ft) } Volume (ft) } Volume (ft )
NPractices (Ib) Practice (Ib) Practice (lb) Load (lb)
6.a. Bioretention #1 or Micro-Bioretention #1
40 1.2,2 Q,36 0 851 1,270 2,127 251.33 0;73 0.60
or Urban BioretentionSec #9
(p )
6.b. Bioretention #2 or Micro-Bioretention #2
80
o 0 0 0 0.00. 0:00 0.00
(Spec #9)
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DANIEL C. HYER
Lic. No. 45596
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DRAINAGE AREA T" TABULATION
C3m2
A Soils
B Soils
C Soils
D Soils
Forest/Open Space
O.p2
0.03
0.04
0.05
Managed Turf
0.15
0.20
0.22
0.25
Impervious Cover
0.95
0.95
L 0.95
0.95
Weighted Rv (turf)
% Managed Turf
Impervious Cover (acres)
Rv (impervious)
% Impervious
Site Area (acres) 3 46
Site Rv
VRRM SITE TABULATION
► it
Drainage Area A Land Cover (acres)
Total Phosphorus Available for Removal in D.A. C (Ib/yr)
Past Development Treatment Volume in D.A. C (ft)
•. s * � � � • r r i �
FOREST/OPENArea Check,
SPACE
IMPERVIOUS COVER
IMPERVIOUS• TREATED
MANAGED TURF AREA
i ► L
Site Treatment Volume (ft)
• r •' r r r r
TP LOAD AVAILABLE FOR REMOVAL (lb/yr
• LOAD r t
TP LOAD REMAINING •
FINAL POST -DEVELOP • LOAD
TP LOAD REDUCTION REQUIRED •
TP • r REDUCTION ACHIEVED
. LOAD •
I. EMAINING
• LOAD .D• REQUIRED
r... t *..
Total Nitrogen (For Information Purposes)
POST -DEVELOPMENT LrA;.
NITROGENr+D REDUCTION ACHIEVED s
: 11 4 •r r•k1 V :r i !
s • ••ar'.
Runoff Managed Impervious Vollume from Runoff Remaining Total BMP Phosphorus Phosphorus UntreatedPhosphorus Remaining
Removal Load from Phosphorus Downstream Practice to be
Practice Reduction Turf Credit Cover Credit Upstream Reduction Runoff Treatment Removed By Phosphorus
Credit l Area acres Area acres Practice ftp � 3 � Efficiency Upstream Load to Employed
( } (acres) (acres) ( } (ft) } Volume (ft) } Volume (ft )
NPractices (Ib) Practice (Ib) Practice (lb) Load (lb)
6.a. Bioretention #1 or Micro-Bioretention #1
40 1.2,2 Q,36 0 851 1,270 2,127 251.33 0;73 0.60
or Urban BioretentionSec #9
(p )
6.b. Bioretention #2 or Micro-Bioretention #2
80
o 0 0 0 0.00. 0:00 0.00
(Spec #9)
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DANIEL C. HYER
Lic. No. 45596
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2
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DRAINAGE AREA T" TABULATION
C3m2
Bioretention Filter Sizing Calculations (Level 1
VA DEQ Spec. No. 4
Sizin
Tv = 2127 CF from VRRM spreadsheet
Volume reduced by an upstream BMP = 1 0 CF
Storage Depth = 1.5 see below
Layer Depth (tt) Void Ratio Depth' Vr
Surface ponding
Soil Media
Gravel Storage
Pea Gravel
0.5
1 0.5
0.25 0.5
0.4 0.4
0.4 0.1
2
1
0.25
Required Surface Area (SA)=Fff1SF
SF
Provided Surface Area (SA) =
Pretreatment
Gravel Flow Spreader Provided
DESIGN
STORM PONDING ELEVATION
1 -YEAR 698.40
2 -YEAR 698.60
10 -YEAR 698.91
0
Min Depths Max Depths
N/A 1
2 6
N/A 1
0.25 0.25
BIORETENTION FILTER CALCULATIONS
ELEV. = G
ELEV. = H
ELEV. = I
'GEOTEXTILE - 24" STRIP
i C CENTERED ON UNDERDRAIN
D GEOTEXTILE - WRAP
AROUND BOTTOM 3" MIN
0 6" PERFORATED SHEDULE
40 PVC UNDERDRAIN
CROSS
DIMENSION
SECTION
ELEMENT NAME
MATERIAL
VALUE
DIMENSION
"BMP A"
A
PONDING STORAGE (DEPTH)
SEE PLAN
0.50 FT
*B
FILTER MEDIA LAYER (DEPTH)
SOIL MIX PER DEQ SPEC. NO. 9
2.00 FT
C
CHOKER LAYER (DEPTH)
#8 OR #89 WASHED GRAVEL
0.25 FT
D
STORAGE LAYER (DEPTH)
VDOT #57 WASHED STONE
1.00 FT
E
SURFACE PONDING (ELEV.)
--
698.25
F
TOP OF FILTER MEDIA (ELEV.)
--
697.75
G
TOP OF CHOKER LAYER (ELEV.)
--
695.75
H
TOP OF STORAGE LAYER (ELEV.)
--
695.50
I
UNDERDRAIN INV. (ELEV.)
SCHED. 40 PVC
694.50
*CONTRACTOR TO INCREASE DEPTH OF FILTER MEDIA BY 10% WHEN INSTALLING TO ACCOUNT FOR SETTLEMENT.
THE CONTRACTOR SHALL ENSURE FILTER MEDIA LAYER DEPTH SHOWN HERE IS MET AFTER THREE DAYS OF
SETTLING. IF THIS DEPTH IS NOT MET, THE CONTRACTOR SHALL INSTALL ADDITIONAL FILTER MEDIA AT NO COST TO
THE OWNER.
BIORETENTION FILTER SECTION
1" = 2' 2 4
a
z
S HDPE BIORETENTION RISER (NOTCHED)
1" = 2' 2 4
4 GRAVEL FLOW SPREADER
1"=1' 1 2
A 5
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Lic. No. 45596
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IONAL
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VIRGINIA GRID NORTH
'
'69�� lI'l
SOUTH ZONE
TMP 08800-00-00-003CO
LEE S, AND JOANNE CUTCLIFF
BLANDEMAR FARM ESTATES, PHASE III
LOT 3
IRF
TMP 08800-00-00-003DO
LEE S. AND JOANNE CUTCLIFF
LOT 4
21000 ACRES
kl
'> RICHARD A. AND DIANNE L. HENDRICKS
BLANDEMAR FARM ESTATES, PHASE I
LOT 3
IRF
DETAIL 110 1�s
1.) PREPARED FOR: GREEN MOUNTAIN CONSTRUCTION, LLC.
2THIS TOPOGRAPHIC SURVEY WAS COMPLETED UNDER THE DIRECT AND
RESPONSIBLE CHARGE OF KIRK HUGHES, L.S. FROM AN ACTUAL GROUND
SURVEY MADE UNDER HIS SUPERVISION; T14AT THE ORIGINAL DATA WAS
OBTAINED ON MAY 21, 2018; AND THAT THIS PLAT, MAP OR DIGITAL
GEOSPATIAL DATA INCLUDING METADATA MEETS MINIMUM ACCURACY STANDARDS
UNLESS OTHERWISE NOTED.
3j HORIZONTAL DATUM: NAD -83 VIRGINIA SOUTH ZONE
BENCHMARK il:
4.) VERTICAL DATUM: NAVD-88 NAL AND DISK
TEMPORARY BENCH MARK #1 NAIL WITH DISC SET, ELEVATION = 721.02- AND ELEV. 721.02'
TEMPORARY BENCH MARK #2 NAIL, FOUND, ELEVATION = 703,46'
5.) THE LOCATIONS OF EXISTING UNDERGROUND UTILITIES ARE SHOWN IN AN
APPROXIMATE WAY ONLY. NO UNDERGROUND INVESTIGATION OF UTILITIES WAS
PERFORMED. THE CONTRACTOR SHALL DETERMINE THE EXACT LOCATION OF
ALL EXISTING UTILITIES BEFORE COMMENCING WORK. THE CONTRACTOR
AGREES TO BE FULLY RESPONSIBLE FOR ANY AND ALL DAMAGES WHICH MIGHT
BE OCCASIONED BY HIS OR HER FAILURE TO EXACTLY LOCATE AND PRESERVE
ANY AND ALL UNDERGROUND UTILITIES. Ey. WELL
UTILITY OPERATORS:
MISS UTILITY CONTACT INFORMATION: 1-800-552-7001
6.) PROPERTY MAY BE SUBJECT TO ADDITIONAL RESTRICTIONS AND EASEMENTS BpiCHNARK #2:
OF RECORD. NAIL FOUND
7) SITE CHARACTERISTICS: OPEN PASTURE WITH PRE CONSTRUCTION
DOUBLE
x 701.4
INV IN
x 698.7
670
690
688,5
INV IN 683.97' 680
6745
25' IRF x C63.3
TMP 08800--uu
D.B2585, P - ESTAIEs, PHASE I TOPOGRAPHIC SURVEY:
LOT �
BLANDEMAR FARMLOT 3 |
�
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PHASE m
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SAMUEL MILLER MAGISTERIAL 03TRKJ
ALBEMARLE COUNTY VIRGINIA
MAY 22, 2018
LEGEND:
mpCAST |ROmPIPE
cwp ~ ooxKuuATEo ecm| p|pc
DBL ~ nnumLE
EP ~ EDGE OF PAVEMENT
|wv!wvERr
IRF ~IRON ROD FOUND
Tau TEMPORARY BENCH MARK
U/t UNDER CONSTRUCTION
X 525�28 = SPOT cuEVwnws
? ~ UNKNOWN OR oHVER0B} LOCATION
~ rcuomx�
p 8Ewno mxnx
= Fcwoc
-- FENCE (PROPOSED)
CONTOUR INTERVAL = 2'
V. 11R
UG fA UGHES
C. 0. 1458 SURVEY NOT TO SCALE
LINE TABLE
DISTANCE
NO, I BEARING
I Ll IN 54!31 04- W 187.82' SUR14
KIRK HUGHES ASSOCIATES LAND SURVEYORS & PLANNERS
CURVE TABLE: 220 EAST HIGH STREET
NO. I DELTA RADIUS I ARC ITANGENT CH. BEARING ICHORD CHARLOTTE3Y|LLE, VIRGINIA 22002
(434) 286-6042
C:\UDD\SURVEYS\201Ek2018-041\2818041-01.DWG