HomeMy WebLinkAboutWPO202200041 Plan - VSMP 2022-09-29GENERAL NOTES
OWNERS: TMP 07600-00-00-02400
STRIBLING HOLDINGS, LLC
PO BOX 1467
CHARLOTTESVILLE, VA 22902
DEVELOPER: RIVERBEND DEVELOPMENT, INC.
455 SECOND STREET SE, SUITE 201
CHARLOTTESVILLE, VA 22903
ENGINEER: COLLINS ENGINEERING
zoo GARRETT ST, SUITE K
CHARLOTTESVILLE, VA 22902
TAX MAP: 07600-00-00-02400
D.B.3556, PG.525
68.96 ACRES
ZONING: R-i RESIDENTIAL, BONUS LEVEL- CLUSTER DEVELOPMENT WITH
ENTRANCE CORRIDOR OVERLAY (EC), AIRPORT IMPACT OVERLAY (AIA), MANAGED AND
PRESERVED SLOPES OVERLAY DISTRICT, AND FLOOD HAZARD OVERLAY (FH) ZONING
DISTRICT.
PROPOSED USE: 54TOTAL RESIDENTIAL SINGLE-FAMILY DETACHED DWELLING UNITS
PHASING: THIS PROJECT SHALL BE DEVELOPED IN ONE PHASE.
TOPOGRAPHY/SURVEY: BOUNDARY AND TOPOGRAPHIC SURVEY PREPARED BY ROUDABUSH, GALE &
ASSOCIATES IN MARCH, 2oii. FIELD VERIFIED BY COLLINS ENGINEERING IN
APRIL, 2021.
DATUM: NAVD 1988
EXISTING VEGETATION: WOODED LOT WITH HARDWOOD TREES. THIS PROPERTY IS NOT LOCATED
WITHIN AN ALBEMARLE COUNTY AGRICULTURAL/FORESTAL DISTRICT.
FLOODPLAIN: FLOODPLAIN LIMITS SHOWN PER FEMA FLOOD INSURANCE RATE MAP
NUMBER 51003CO269D DATED FEBRUARY 4, 2005.
STREAM BUFFER: ioo' WPO STREAM BUFFERS EXIST ON THE PROPERTY AS SHOWN ON THE
PRELIMINARY PLAT. SEE SHEETS 2 AND 3 FOR LOCATION OF THE WPO
BUFFERS. THESE BUFFERS SHALL BE MANAGED IN ACCORDANCE WITH THE
ALBEMARLE COUNTY WATER PROTECTION ORDINANCE.
PRESERVED/MANAGED SLOPES: BOTH PRESERVED AND MANAGED STEEP SLOPES EXIST ON THE
PROPERTY. SEE EXISTING CONDITIONS FOR LOCATION OF THE STEEP
SLOPES.
WATERSHED: MOORES CREEK WATERSHED
ACCESS: THE ENTRANCE TO THE SITE SHALL CONNECT TO SUNSET AVENUE
EXTENDED. THERE WILL BE AN EMERGENCYACCESS CONNECTION TO
STRIBLING AVENUE FOR A SECOND POINT OF CONNECTION.
SETBACKS: FRONT: 5' MINIMUM (18' MINIMUM FROM R/W OR EDGE OF SIDEWALK TO
GARAGE)
FRONT MAXIMUM SETBACK: NONE
SIDE: 5' MINIMUM, NO MAXIMUM
BUILDING SEPARATION: to FEET
REAR: 20' MINIMUM, NO MAXIMUM
NOTE: LOTS SHALL BE A MINIMUM OF 20,000 SF AND HAVE A MINIMUM OF 80'
ROAD FRONTAGE (EXCLUDING LOTS AROUND A CUL-DE-SAC)
BUILDING HEIGHT: MAXIMUM BUILDING HEIGHT SHALL NOT EXCEED 35'
BUIDABLEAREA: BUILDABLE AREAS ARE SHOWN ON THE LAYOUT SHEET FOR EACH LOT. SEE
DIAGRAM ON SHEET 4 FOR TYPICAL BUILDING LAYOUT AND MINIMUM
REQUIRED BUILDABLE AREA.
OPEN SPACE REQUIRED: 68.96 AC x 25%= 17.24 AC
NOTE: A MINIMUM OF 20%OF REQUIRED OPEN SPACE OUTSIDE CRITICAL
AREAS PER SECTION 18-4.7 =17.24 AC x 20%= 3.45 AC
OPEN SPACE PROPOSED: OPEN SPACE A' = 13.03 AC
OPEN SPACE B' = 9.2o AC
OPEN SPACE C' = 4.4o AC
OPEN SPACED' = 0.28 AC
TOTAL OPEN SPACE = 26.91 AC (39.0%)
OPEN SPACE PROPOSED OUTSIDE CRITICAL AREAS = 6.55 AC
NOTE: OPEN SPACE CONTAINED WITHIN THE too' STREAM BUFFER SHALL BE
DEDICATED TO PUBLIC USE AS A GREENWAY. A PUBLIC TRAIL IS PROPOSED
WITHIN THE GREENWAY TO BE DEDICATED TO PUBLIC USE.
IMPERVIOUS AREAS: BUILDINGS & DRIVEWAYS = 233,600 SF (5.36 AC)
DEVELOPMENT ROADS = 243,740 SF (3.30 AC)
FUTURE R/W DEDICATION = 87,485 SF (2.00 AC)
SIDEWALKS = 44,200 SF (1.02 AC)
TOTAL = 509,025 SF (11.68 AC)
BENCHMARKS: SEE SHEET 2 AND 3 FOR BENCHMARKS ON THE PROPERTY.
RECREATIONAL REQUIREMENTS: NONE
LIGHTING: NO LIGHTING IS PROPOSED
SIGNAGE: NO SIGNAGE IS PROPOSED ATTHISTIME.
STREETTREES: STREETTREES SHALL BE PROVIDED IN ACCORDANCE WITH ALBEMARLE
COUNTY LANDSCAPING REQUIREMENTS WITHIN SECTION 32.7.9 OFTHE
COUNTY CODE AND IN ACCORDANCE WITH CHAPTER 14.
BUILDING SITES: EACH PARCEL CONTAINS A BUILDING SITE THAT COMPLIES WITH SECTION
4.2.2 OF THE ALBEMARLE COUNTY ZONING ORDINANCE. THE PROPOSED
PARCELS (LOTS 1-73) MAY NOT BE FURTHER SUBDIVIDED.
OFFSITE DISTURBANCE: NO OFFSITE DISTURBANCE IS PROPOSED WITH THIS PLAN, EXCEPT FOR THE
TIE-IN CONNECTION TO SUNSET AVENUE EXTENDED, WITHIN THE VDOT
RIGHT OF WAY.
PARKING: 1. (2) OFF-STREET PARKING SPACES REQUIRED FOR EACH LOT. EACH LOT
SHALL HAVE A MINIMUM OF 2 OFFSTREET PARKING SPACES WITHIN THE
DRIVEWAY AND GARAGE.
2. GUEST PARKING IS NOT REQUIRED WITHIN THE DEVELOPMENT; HOWEVER,
THE ROAD NETWORK WITHIN THE PROPOSED DEVELOPMENT ALLOWS FOR
PARKING ON ONE SIDE OF THE STREET FOR GUEST PARKING WITHIN THE
NEIGHBORHOOD.
BURIAL SITES: (1) CEMETERY EXISTS ON THE PROPERTY. SEE EXISTING CONDITIONS SHEETS
FOR LOCATION OF THE CEMETERY. THE CEMETERY SHALL REMAIN ON THE
PROPERTY AND UNDISTURBED WITH THE PROPOSED DEVELOPMENT.
RETAINING WALLS: SEE THE GRADING SHEETS FOR THE LOCATION OF THE RETAINING WALLS
WITHIN THE DEVELOPMENT.
DAM INUNDATION ZONE: THIS PROPERTY IS LOCATED WITHIN A STATE DAM INUNDATION ZONE FOR
THE RAGGED MOUNTAIN DAM. THE HAZARD CLASSIFICATION FOR THIS DAM
IS HIGH HAZARD CLASSIFICATION. THIS DEVELOPMENT WILL NOT CHANGE
THE OVERALL CLASSIFICATION OF THE EXISTING DAM.
ALL BUILDABLE AREA SHALL BE OUTSIDE OF THE SUNNY DAY DAM BREACH
INUNDATION ZONE. SEE GRADING PLAN FOR THE PROPOSED LOTS WITH THE
LIMITS OF THE SUNNY DAY BREACH INUNDATION ZONE.
AREA DEDICATED TO PUBLIC USE: THE DEVELOPMENT INCLUDES THE DEDICATION FOR PUBLIC USE A 62,
RIGHT OF WAY AREA FOR THE FUTURE CONNECTOR ROADWAY THROUGH
THE PROPERTY, AS SHOWN. TOTAL AREA OF PROPOSED DEDICATION IS 2.0
ACRES.
TMP 76R1-04--D
REDFIELDS COMMUNITY
ASSOCIATION INC C/O
COMMUNITY GROUP
D.B. 3267 p. 670
RESIDENTIAL
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TMP 76-19
MEDLIN, BURLEY M
SR OR MARY K
D.B. 3982, p. 333
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SUBDIVISION
TMP 76R1-04--45
TMP
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SUBDIVISION
TMP 76-18
MEDLIN, BURLEY M
SR OR MARY K
D.B. 3982, p. 333
RESIDENTIAL
GRAPHIC SCALE
( IN FEET )
1 inch = 80 ft.
GRANGER PROPERTY
TMP 76131-03--B
REDFIELDS COMMUNITY
ASSOCIATION INC C/O
COMMUNITY GROUP
D.B. 2279 p. 410
RESIDENTIAL
VSMP PLAN
SAMUEL MILLER MAGISTERIAL DISTRICT
ALBEMARLE COUNTY, VIRGINIA
SHEET LAYOUT
SCALE: 1" = 150'
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RESIDENTIAL
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SHIELDS, MAURY F\
MERRILY PLANTATION
D.B. 1147 p. 113
RESIDENTIAL
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(9.20 AC)
LOT 14
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TMP 76B-1-7
VIRGINIA ELECTRIC & POWER CO
D.B. 539 p. 337, p. 339 (plat),
D.B. 508 R. 605 (plat)
RESIDENTIAL P�NV6
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D.B. 3303 P. 227
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UNIT OWNER'S ASSOCIATION
OF PARKSIDE AT EAGLES
LANDING
TMP 76-46
NEIGHBORHOOD
INVESTMENTS-JR LLC
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SCALE: 1" = 2000'
Sheet List Table
Sheet Number
Sheet Title
1
COVER
2
EXISTING CONDITIONS
3
EXISTING CONDITIONS
4
EROSION SEDIMENT CONTROL NARRATIVE, NOTES & DETAILS
5
ESC PLAN - OVERVIEW OF PERIMETER MEASURES
6
PHASE I EROSION & SEDIMENT CONTROL PLAN
7
PHASE I EROSION & SEDIMENT CONTROL PLAN
8
PHASE II EROSION & SEDIMENT CONTROL PLAN
9
PHASE II EROSION & SEDIMENT CONTROL PLAN
10
PHASE III EROSION & SEDIMENT CONTROL PLAN
11
PHASE III EROSION & SEDIMENT CONTROL PLAN
12
EROSION & SEDIMENT CONTROL DETAILS
13
EROSION & SEDIMENT CONTROL DETAILS
14
PRE -DEVELOPMENT STORMWATER MANAGEMENT PLAN
15
POST -DEVELOPMENT STORMWATER MANAGEMENT PLAN
16
WATER QUALITY STORMWATER MANAGEMENT PLAN
17
STORMWATER MANAGEMENT NOTES & DETAILS
18
STORMWATER MANAGEMENT NOTES & DETAILS
19
STORMWATER MANAGEMENT NOTES & DETAILS
20
GRADING & DRAINAGE PLAN
21
GRADING & DRAINAGE PLAN
22
GRADING & DRAINAGE PLAN
23
GRADING & DRAINAGE PLAN
23 TOTAL SHEETS
* THE GRADING & DRAINAGE PLAN SHEETS HAVE BEEN ADDED TO THIS SET FOR
INFORMATIONAL PURPOSES ONLY. THESE SHEETS DEMONSTRATE THAT POSITIVE
DRAINAGE HAS BEEN PROVIDED AWAY FROM THE HOUSES FOR A MINIMUM OFlo'.
THESE SHEETS ALSO SHOW THE TOP & BOTTOM ELEVATIONS OF THE RETAINING WALLS.
1IRGINIA EROSION a SEDIMENT
EROSION CONTROL HANDBOOK SPECIFICA 77ON NUMBER CONTROL
CE
CONSTRUCTI0N ENTRANCE
3.02
CR
CR
CONSTRUCTION ROAD
5.03
S TA BIL IZA 77 ON
SF
SILT FENCE
3.05
x K x
ST
SEDIMENT TRAP
3.13
SB
SEDIMENT BASIN
J. 14
OP
OUTLET PROTECTION
3.18
RR
RIPRAP
3.19
CD
'
CHECK DAM
3.20
TS
TS
TEMPORARY SEEDING
3.31
PS
PS
PERMANENT SEEDING
3.32
OTREE
PROTECTION
3.38
DC
DC
DUST CONTROL
3.39
•
PUMP AROUND DIVERSION
APPROVALS
DEPARTMENT OF COMMUNITY DEVELOPMENT
PLANNER/ZONING
ENGINEER
INSPECTIONS
ARB
DEPARTMENT OF FIRE RESCUE
ALBEMARLE COUNTY SERVICE AUTHORITY
VIRGINIA DEPARMENT OF TRANSPORTATION
111107,111111111
Lic. No. 035791
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EROSION & SEDIMENT CONTROL
EROSION CONTROL NOTES
MEASURES:
1.
THE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO THE
PRE -CONSTRUCTION CONFERENCE, ONE WEEK PRIOR TO THE COMMENCEMENT OF LAND
STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES SHALL BE IN
DISTURBING ACTIVITY, AND ONE WEEK PRIOR TO THE FINAL INSPECTION.
ACCORDANCE K17H THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK.
2.
ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CONSTRUCTED AND
STRUCTURAL PRACTICES USED IN THIS SECTION CONSIST OF THE FOLLOWING:
MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE VIRGINIA
EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS VR
301 SAFETY FENCE.,
625-02-00 EROSION AND SEDIMENT CONTROL REGULATIONS.
A PROTEC77VE BARRIER INSTALLED TO PREVENT ACCESS TO AN EROSION CONTROL MEASURE.
J.
AL L EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR
TO PROHIBIT THE UNDESIRABLE USE OF AN EROSION CONTROL MEASURE BY THE PUBLIC.
AL THE FIRST STEP IN CLEARING.
APPLICABLE TO ANY CONTROL MEASURE OR SERIES OF MEASURES WHICH CAN BE
4,
A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE
CONSIDERED UNSAFE BY VIRTUE OF POTENTIAL ACCESS BY THE PUBLIC.
MAINTAINED ON THE SI7F AT ALL TIMES.
302 CONSTRUCTION ENTRANCE.,
5.
PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN
A STABILIZED CONSTRUCTION ENTRANCE LOCATED AT POINTS OF VEHICULAR INGRESS AND
INDICATED ON THESE PLANS (INCLUDING, BUT NOT LIMITED TO, OFF -SITE BORROW OR
EGRESS ON A CONSTRUCTION SITE TO REDUCE THE AMOUNT OF MUD TRANSPORTED ONTO
WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION
PAVED PUBLIC ROADS BY MOTOR VEHICLES OR RUNOFF. CONSTRUCTION ENTRANCES SHALL
CONTROL PLAN TO THE OWNER FOR REVIEW AND APPROVAL BY THE PLAN APPROVING
BE INSTALLED AS SHOWN ON THE PLANS TO REDUCE 774E AMOUNT SEDIMENT TRANSPORTED
AUTHORITY.
ONTO PUBLIC ROADWAYS.
6.
THE CONTRACTOR IS RESPONSIBLE FOR INSTALLA77ON OF ANY ADDITIONAL EROSION
303 CONSTRUCTION ROAD STABILIZATION:
CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS
THE TEMPORARY STABILIZATION OF ACCESS ROADS, SUBDIVISION ROADS, PARKING AREAS,
DETERMINED BY THE PLAN APPROVING AUTHORITY.
AND OTHER SITE VEHICLE TRANSPORTATION ROUTES WITH STONE IMMEDIATELY AFTER
7.
ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES
GRADING. TO REDUCE EROSION OF TEMPORARY ROADBEDS BY CONSTRUCTION TRAFFIC
AT ALL 77MES DURING LAND DISTURBING ACTIVITIES AND DURING SI7E DEVELOPMENT
DURING WET WEATHER AND TO REDUCE EROSION AND SUBSEQUENT REGARDING OF
UNTIL FINAL STABILIZATION IS ACHIEVED.
PERMANENT ROADBEDS BETWEEN THE 77ME OF 1N177AL GRADING AND FINAL STABILIZA7ON.
8.
DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED
USE WHEREVER STONE -BASE ROADS OR PARKING AREAS ARE CONSTRUCTED, WHE77-IER
FILTERING DEVICE.
PERMANENT OR TEMPORARY, FOR USE BY CONSTRUCTION TRAFFIC.
9.
THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY
AFTER EACH RUNOFF -PRODUCING RAINFALL EVENT. ANY NECESSARY REPAIRS OR
305 SILT FENCE.,AND
A TEMPORARY SEDIMENT BARRIER CONSISTING OF A SYNTHETIC FILTER FABRIC STRETCHED
CLEANUP TO MAINTAIN THE EFFEC7VENESS OF THE EROSION CONTROL DEVICES SHALL
ACROSS AND ATTACHED TO SUPPOR77NG POSTS AND ENTRENCHED, TO INTERCEPT AND
BE MADE IMMEDIATELY.
DETAIN SMALL AMOUNTS OF SEDIMENT FROM DISTURBED AREAS DURING CONSTRUCTION
10.
ALL FILL MATERIAL TO BE TAKEN FROM AN APPROVED DESIGNATED BORROW AREA.
OPERATIONS IN ORDER TO PREVENT SEDIMENT FROM LEAVING THE SITE AND TO DECREASE
11.
ALL WASTE MATERIALS SHALL BE TAKEN TO AN APPROVED WASTE AREA. EARTH FILL
THE VELOCITY OF SHEET FLOWS AND LOW -TO -MODERATE LEVEL CHANNEL FLOWS. THE SILT
SHALL BE INERT MATERIALS ONLY, FREE OF ROOTS, STUMPS, WOOD, RUBBISH, AND
FENCE BARRIERS SHALL BE INSTALLED DOWN SLOPE OF AREAS Wl774 MINIMAL GRADES TO
OTHER DEBRIS
FILTER SEDIMENT LADEN RUNOFF FROM SHEET FLOW AS INDICATED. THEY SHALL BE
12.
BORROW OR WASTE AREAS ARE TO BE RECLAIMED WITHIN 7 DAYS OF COMPLETION
INSPECTED IMMEDIATELY AFTER EACH RAINFALL AND MAINTAINED IN ACCORDANCE WITH THE
PER ZONING ORDINANCE SECTION 5.1.28.
VIRGINIA EROSION & SEDIMENT CONTROL HANDBOOK (VESCH).
13.
ALL INERT MATERIALS SHALL BE TRANSPORTED IN COMPLIANCE WITH SECTION 13-301
OF THE CODE OF ALBEMARLE.
3.07 STORM DRAIN INLET PROTECTION:
14.
BORROW, FILL OR WASTE ACTIVITY INVOLVING INDUSTRIAL -TYPE POWER EQUIPMENT
A SEDIMENT FILTER OR AN EXCA VATED IMPOUNDING AREA AROUND A STORM DRAIN DROP
SHALL BE LIMITED TO THE HOURS OF 7.'00 AM TO 9:00 PM.
INLET OR CURB INLET. TO PREVENT SEDIMENT FROM ENTERING STORM DRAINAGE SYSTEMS
15.
BORROW, FILL OR WASTE AC77WTY SHALL BE CONDUCTED IN A SAFE MANNER THAT
PRIOR TO PERMANENT STABILIZATION OF THE DISTURBED AREA. INLET PR07ECT70N APPLIES
WHERE STORM DRAIN INLETS ARE TO BE MADE OPERATIONAL BEFORE PERMANENT
MAINTAINS LATERAL SUPPORT, OR ORDER TO MINIMIZE ANY HAZARD TO PERSONS,
STABILIZATION OF THE CORRESPONDING DISTURBED DRAINAGE AREA.
PHYSICAL DAMAGE TO ADJACENT LAND AND IMPROVEMENTS, AND DAMAGE TO ANY
PUBLIC STREET BECAUSE OF SLIDES, SINKING, OR COLLAPSE.
309 TEMPORARY DIVERSION DIKE
16.
THE DEVELOPER SHALL RESERVE 774E RIGHT TO INSTALL, MAINTAIN, REMOVE OR
A TEMPORARY RIDGE OF COMPACTED SOIL CONSTRUCTED AT THE TOP OR BASE OF A
CONVERT TO PERMANENT STORMWATER MANAGEMENT FACIL177ES WHERE APPLICABLE
SLOPING DISTURBED AREA. TO DIVERT STORM RUNOFF FROM UPSLOPE DRAINAGE AREAS
ALL EROSION CONTROL MEASURES REQUIRED BY THIS PLAN REGARDLESS OF THE
AWAY FROM UNPROTECTED DISTURBED AREAS AND SLOPES TO A STABILIZED OUTLET. TO
SALE OF ANY LOT, UNIT, BUILDING OR OTHER PORTION OF THE PROPERTY.
DIVERT SEDIMENT -LADEN RUNOFF FROM A DISTURBED AREA TO A SEDIMENT -MAPPING
17.
TEMPORARY STABILIZATION SHALL BE TEMPORARY SEEDING AND MULCHING. SEEDING
FACILITY SUCH VEER STORMWATER
A SEDIMENT TRAP OR SEDIMENT BASIN USE WHEREVER
IS TO BE AT 75 LBS ACRE, AND IN THE MONTHS OF SEPTEMBER TO FEBRUARY TO
D SLOPES O
RUNOFF MUST BE TEMPORARILY DIVERTED TO PROTECT DISTURBED AREAS AND SLOPES OR
E
RETAIN SEDIMENT ON SITE DURING CONSTRUCTION. THESE STRUCTURES GENERALLY HAVE A
CONSIST A 50150 MIX OF ANNUAL RYGRASS AND CEREAL WINTER RYE OR IN MARCH
LIFE EXPECTANCY OF 18 MONTHS OR LESS, WHICH CAN BE PROLONGED WITH PROPER
AND APRIL TO CONSIST OF ANNUAL RYE, OR MAY THROUGH AUGUST TO CONSIST OF
MAINTENANCE.
GERMAN MILLET. STRAW MULCH IS TO BE APPLIED AT 80LBS/100SF. ALTERNATIVES
ARE SUBJECT TO APPROVAL BY THE EROSION CONTROL INSPECTOR.
3.11 TEMPORARY RIGHT=OF-WAY DIVERSION:
18.
PERMANENT STABILIZA7ON SHALL BE LIME AND FERTILIZER, PERMANENT SEEDING, AND
A RIDGE OF COMPACTED SOIL OR LOOSE ROCK OR GRAVEL CONSTRUCTED ACROSS
MULCH. AGR/CUT.7URAL GRADE LIMESTONE SHALL BE APPLIED AT 90LBS 1000SF,
DISTURBED SLOPIRIGHTNG RIGHT- Y AND SIMILAR SLOPING AREAS TO SHORTEN 774E FLOW LENGTH
WITHIN A SLOPING RIGHT-OF-WAY, THEREBY REDUCING THE EROSION P07EN71AL BY
INCORPORATED INTO THE TOP 4-6 INCHES OF SOIL. FERTILIZER SHALL E APPLIED AT
DIVER77NG STORM RUNOFF TO A STABILIZED OUTLET GENERALLY, EARTHEN DIVERSIONS ARE
1000LBS/ACRE AND CONSIST OF A 10-20-10 NUTRIENT MIX. PERMANENT SEEDING
APPLICABLE WHERE THERE WILL BE LITTLE OR NO CONSTRUCTION TRAFFIC WITHIN THE
SHALL BE APPLIED AT 180LBS/ACRE AND CONSIST OF 95% KENTUCKY 31 OR TALL
RIGHT-OF-WAY GRAVEL STRUCTURES ARE MORE APPLICABLE TO ROADS AND OTHER
FESCUE AND 0-5% PERENNIAL RYGRASS OR KENTUCKY BLUEGRASS STRAW MULCH IS
RIGHTS -OF -WAY WHICH ACCOMMODATE VEHICULAR TRAFFIC
TO BE APPLIED AT 80LBS/100SF. ALTERNATIVES ARE SUBJECT TO APPROVAL BY THE
313 TEMPORARY SEDIMENT TRAP.
EROSION CONTROL INSPECTOR.
A TEMPORARY POND/NG AREA FORMED BY CONSTRUCTING AN EARTHEN EMBANKMENT WITH A
19.
MAINTENANCE. ALL MEASURES ARE TO BE INSPECTED WEEKLY AND AFTER EACH
STONE OUTLET. TO DETAIN SEDIMENT -LADEN RUNOFF FROM SMALL DIS77JRBED AREAS LONG
RAINFALL. ANY DAMAGE OR CLOGGING TO STRUCTURAL MEASURES IS TO BE REPAIRED
ENOUGH TO ALLOW THE MAJORITY OF THE SEDIMENT TO SETTLE OUT. USE BELOW
IMMEDIATELY. SILT TRAPS ARE TO BE CLEANED WHEN 507 OF THE WET STORAGE
DISTURBED AREAS WHERE THE TOTAL CONTRIBUTING DRAINAGE AREA IS LESS THAN 3 ACRES,
VOLUME IS FILLED WITH SEDIMENT. ALL SEEDED AREAS ARE TO BE RESEEDED WHEN
WHERE THE SEDIMENT TRAP WILL BE USED NO LONGER THAN 18 MONTHS, AND IT MAY BE
NECESSARY TO ACHIEVE A GOOD STAND OF GRASS SILT FENCE AND DIVERSION
CONSTRUCTED E17HER INDEPENDENTLY OR IN CONJUNCTION WITH A TEMPORARY DIVERSION
DYKES WHICH ARE COLLEC77NG SEDIMENT TO HALF THEIR HEIGHT MUST BE CLEANED
DIKE.
AND REPAIRED IMMEDIATELY.
20.
ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE REMOVED
374 TEMPORARY SEDIMENT BASIN.
WITHIN 30 DAYS OF FINAL S17F STABILIZATION WHEN MEASURES ARE NO LONGER
A TEMPORARY BARRIER OR DAM K17H A CONTROLLED STORMWATER RELEASE STRUCTURE
NEEDED, SUBJECT TO APPROVAL BY THE EROSION CONTROL INSPECTOR.
FORMED BY CONSTRUCTING AN EMBANKMENT OF COMPACTED SOIL ACROSS A
DRAINAGEWAY. TO DETAIL SEDIMENT -LADEN RUNOFF FROM DISTURBED AREAS
21.
THE £&S INSPECTOR HAS THE AUTHORITY TO ADD OR DELETE E&S CONTROLS AS
IN "WET" AND 'DRY" STORAGE LONG ENOUGH FOR THE MAJORITY OF THE SEDIMENT TO
NECESSARY IN THE FIELD AS SITE CONDITIONS CHANGE. IN ADDITION NO SEDIMENT
SETTLE OUT. APPLIES BELOW DISTURBED AREAS WHERE THE TOTAL CONTRIBUTING DRAINAGE
BASIN OR TRAP CAN BE REMOVED WITHOUT WRITTEN AUTHORIZATION.
AREA IS EQUAL TO OR GREATER THAN THREE ACRES THERE MUST BE SUFFICIENT SPACE
TOPOGRAPHY FOR TEMPORARY
AND APPROPRIATE 174E CONSTRUCTION OF A IMPOUNDMENT.
SOIL
DESCRIPTION
318 OUTLET PROTECTION.'
2C
- ALBEMARLE FINE SANDY LOAM 7 TO 15% SLOPES
( )
STRUCTURALLY LINED APRONS OR 07HER ACCEPTABLE ENERGY DISSIPATING DEVICES PLACED
SOIL IS DEEP, WELL DRAINED WITH MODERATE PERMEABILITY. SURFACE LAYER IS PARTLY
AT THE OUTLETS OF PIPES OR PAVED CHANNEL SECTIONS. TO PREVENT SCOUR AT
DECOMPOSED FOREST LITTER AND OTHER ORGANIC MATERIAL OVER VERY DARK GRAYISH
STORMWATER OUTLETS; TO PR07ECT THE OUTLET STRUCTURE, AND TO MINIMIZE 774E
BROWN FINE SANDY LOAM. SOIL IS VERY STRONG AND DEPTH TO BEDROCK IS 40-60
POTENTIAL FOR DOWNSTREAM EROSION BY REDUCING THE VELOCITY AND ENERGY OF
2D
INCHES
- ALBEMARLE FINE SANDY LOAM TO 257. SLOPES)
( )
CONCENTRATED STORMWATER FLOWS. APPLICABLE TO THE OUTLETS OF ALL PIPES AND
SOIL IS DEEP, WELL DRAINED WIN MODERATE PERMEABILITY. SURFACE LAYER l5 PARTLY
ENGINEERED CHANNELNNEL SECTIONS.
ONS
DECOMPOSED FOREST LITTER AND OTHER ORGANIC MATERIAL OVER VERY DARK GRAYISH
BROWN FINE SANDY LOAM. SOIL IS VERY STRONG AND DEPTH TO BEDROCK IS 40-60
319 RIPRAP:
A PERMANENT, EROSION -RESISTANT GROUND COVER OF LARGE, LOOSE, ANGULAR STONE WITH
73E
INCHES
- SILT LOAM (25 70 459 SLOPES)
FILTER FABRIC OR GRANULAR UNDERLINING. TO PROTECT 774E SOIL FROM 774E EROSIVE
IS
SOIL S
SOIL IMODERATELY DEEP AND WELL DRAINED WITH MODERATELY RAPID PERMEABILITY.
FORCES OF CONCENTRATED RUNOFF, SLOW 774E VELOCITY OF CONCENTRATED RUNOFF WHILE
SURFACE LAYER IS DECOMPOSED ORGANIC MATERIAL SUBSOIL LAYER IS BROWN CHANNERY
ENHANCING THE P07EN77AL FOR INFILTRATION, AND TO STABILIZE SLOPES WITH SEEPAGE
5/LT LOAM AND DEPTH 70 BEDROCK IS 20 TO 40 INCHES.
PROBLEMS, AND/OR NON -COHESIVE SOILS USE WHEREVER SOIL AND WATER INTERFACE
21B
- CULPEPER FINE SANDY LOAM (2 TO 77 SLOPES)
AND THE SOIL CONDITIONS WATER TURBULENCE AND VELOCITY EXPECTED VEGETATIVE
SOIL IS DEEP, WELL DRAINED SO/LS. SURFACE LAYER IS A BROWN SANDY LOAM ABOUT 4"
COVER, ETC., ARE SUCH THAT THE SOIL MAY ERODE UNDER THE DESIGN FLOW CONDITIONS.
THICK, SUBSOIL LAYER CONSISTS MOSTLY OF YELLOWISH RED AND RED CLY LOAM ABOUT
40" THICK; AND SUBSTRATUM TO A DEPTH OF ABOUT 50" CONSISTS OF YELLOWISH RED,
J25 UTILITY STREAM CROSSING:
STRONG BROWN, AND RED SANDY LOAM.
A SMA7EGY FOR CROSSING SMALL WATERWAYS WHEN IN -STREAM UTILITY CONSTRUCTION IS
27C
- CULPEPER FINE SANDY LOAM (7 TO 157 SLOPES)
INVOLVED. TO HELP PROTECT SEDIMENT FROM ENTERING THE STREAM FROM CONSTRUCTION
SOIL IS DEEP, WELL DRAINED SOILS. SURFACE LAYER IS A BROWN SANDY LOAM ABOUT 4"
WITHIN APPROACH AREAS. TO MINIMIZE THE AMOUNT OF DISTURBANCE WITHIN 774E STREAM
THICK; SUBSOIL LAYER CONSISTS MOSTLY OF YELLOWISH RED AND RED CLY LOAM ABOUT
ITSELF. GENERALLY APPLICABLE TO FLOWING STREAMS WITH DRAINAGE AREAS LESS THAN
40" THICK; AND SUBSTRATUM TO A DEPTH OF ABOUT 50" CONSISTS OF YELLOWISH RED,
ONE SQUARE MILE.
STRONG BROWN, AND RED SANDY LOAM.
56B
- MEADOWVILLE LOAM (2 TO 77 SLOPES)
331 TEMPORARY SEEDING.,
SOIL IS VERY DEEP AND MODERATELY TO WELL DRAINED. PERMEABILITY IS MODERATE
THE ESTABLISHMENT OF A TEMPORARY VEGETATIVE COVER ON DISTURBED AREAS BY SEEDING
TO MODERATELY RAPID. SURFACE LAYER IS DARK BROWN LOAM, WITH MODERATE VERY
WITH APPROPRIATE RAPIDLY GROWING ANNUAL PLANTS. TO REDUCE EROSION AND
FINE GRANULAR STRUCTURE DEPTH TO ROCK IS GREATER THAN 60"
SEDIMENTATION BY STABILIZING DISTURBED AREAS THAT WILL NOT BE BROUGHT TO FINAL
95
- HATBORO SILT LOAM-0 TO 27 SLOPES. SOIL IS POORLY DRAINED WITH A VERY HIGH
GRADE FOR A PERIOD OF MORE 774AN 30 DAYS. TO REDUCE DAMAGE FROM SEDIMENT AND
RUNOFF CLASSIFICATION, & OCCASIONALLY FLOODED. SURFACE LAYER IS TYPICALLY SILT
RUNOFF TO DOWNS7REAM OR OFF -SITE AREAS, AND TO PROVIDE PROTECTION TO BARE
LOAM AND ABOUT 0-70" THICK. THE DEPTH TO THE WATER TABLE IS GENERALLY 0-30".
SOILS EXPOSED DURING CONSTRUCTION UNTIL PERMANENT VEGETATION OR OTHER EROSION
REFERENCE: WEB SOIL SURVEY ONLINE DATABASE, FOUND AT
CONTROL MEASURES CAN BE ESTABLISHED
332 PERMANENT STABILIZATION:
THE ESTABLISHMENT OF PERENNIAL VEGETATIVE COVER ON DISTURBED AREAS BY PLANTING
SEED. TO REDUCE EROSION AND DECREASE SEDIMENT YIELD FROM DIS77JRBED AREAS TO
PERMANENTLY STABILIZE DISTURBED AREAS /N A MANNER 774AT IS ECONOMICAL, ADAPTABLE
TO SITE CONDITIONS, AND ALLOWS SELECTION OF THE MOST APPROPRIATE PLANT MATERIALS.
TO IMPROVE WILDLIFE HABITAT. TO ENHANCE NATURAL BEAUTY. UPON COMPLETION OF
CONSTRUCTION ACTIVITIES, ALL AREAS WILL RECEIVE A PERMANENT VEGETA77VE COVER.
3.38 TREE PRESERVATION AND PROTECTION:
PROTECTION OF DESIRABLE TREES FROM MECHANICAL OR OTHER INJURY DURING LAND
DISTURBING AND CONSTRUCTION ACTIVITY. TO ENSURE THE SURVIVAL OF DESIRABLE TREES
WHERE THEY WILL BE EFFECTIVE FOR EROSION AND SEDIMENT CONTROL, WATERSHED
PROTECTION, LANDSCAPE BEAUTIFICATION, DUST AND POLLUT70N CONTROL, NOISE REDUCTION,
SHADE AND OTHER ENVIRONMENTAL BENEFITS WHILE THE LAND IS BEING CONVERTED FROM
FOREST TO URBAN -TYPE USES. APPLIES IN TREE -INHABITED AREAS SUBJECT TO LAND
DISTURBING ACTIVITIES.
339 DUST CONTROL:
REDUCING SURFACE AND AIR MOVEMENT OF DUST DURING LAND DISTURBING, DEMOLITION AND
CONSTRUCTION ACTIVITIES. TO PREVENT SURFACE AND AIR MOVEMENT OF DUST FROM
EXPOSED SOIL SURFACES AND REDUCE 774E PRESENCE OF AIRBORNE SUBSTANCES WHICH
MAY PRESENT HEAL 7H HAZARDS, TRAFFIC SAFETY PROBLEMS OR HARM ANIMAL OR PLANT
LIFE. DUST CONTROL MEASURES SHALL BE EMPLOYED TO PREVENT SURFACE AND AIR
MOVEMENT OF DUST DURING CONSTRUCTION. MEASURES EMPLOYED SHALL BE IN
ACCORDANCE WITH THE VESCH.
EROSION CONTROL NOTES
ES-1: UNLESS OTHERWISE INDICATED, ALL VEGETATIVE AND STRUCTURAL EROSION
AND SEDIMENT CONTROL PRACTICES WILL BE CONSTRUCTED AND MAINTAINED
DESCRIPTION OF EROSION do SEDIMENT
CONTROL MEASURES:
EROSION AND SEDIMENT CONTROL MEASURES:
IT IS ANTICIPATED TO USE A CONSTRUCTION ENTRANCE, RIPRAP, OUTLET PROTECTION,
DIVERSIONS, SEDIMENT TRAPS, SEDIMENT BASINS, A UTILITY STREAM CROSSING, A TEMPORARY
VEHICULAR STREAM CROSSING, AND SILT FENCES TO CONTROL SURFACE DRAINAGE. TEMPORARY
SEEDING WILL BE USED IMMEDIATELY FOLLOWING ALL LAND DISTURBANCE ACTIVITIES.
TEMPORARY STOCKPILE AREAS ARE NOT BE REQUIRED WITH THIS PROPOSED DESIGN. SHOULD
FIELD ADJUSTMENTS NECESSITATE A SMALL STOCKPILE AREA, IT SHALL BE DISCUSSED WITH THE
ESC INSPECTOR AHEAD OF TIME THE STOCKPILE WILL NEED TO BE MAINTAINED 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 GERMINA77NG VEGETATION IMMEDIATELY FOLLOWING GRADING OF THOSE
AREAS. SELECTION OF SEED MIXTURE WILL DEPEND ON THE TIME OF YEAR APPLIED.
3.01 SAFETY FENCE- TO DISCOURAGE ACCESS TO A PARTICULAR AREA.
3.02 CONSTRUCTION ENTRANCE - TO REDUCE THE AMOUNT OF MUD TRANSPORTED ONTO PAVED
PUBLIC ROADS BY MOTOR VEHICLES OR RUNOFF.
3.03 CONSTRUCTION ROAD STABILIZA7ON - TO REDUCE THE EROSION OF TEMPORARY
ROADBEDS BY CONSTRUCTION TRAFFIC AND TO REDUCE THE EROSION AND SUBSEQUENT
REGARDING OF PERMANENT ROADBEDS BETWEEN THE TIME OF INITIAL GRADING AND FINAL
STABILIZATION. CONSTRUCTION ROAD STABILIZATION WILL BE APPLIED TO THE CONTRACTOR
PARKING & STAGING AREAS AND VEHICULAR STREAM CROSSING.
3.05 SILT FENCE- SILT FENCE IS PROPOSED, WHERE SHOWN ON THE PLANS.
3.07 STORM DRAIN INLET PROTECTION- INLET PR07ECT70N IS PROPOSED ON INLETS, WHERE
SHOWN ON THE PLANS.
3.09 DIVERSION- PERIMETER DIVERSIONS ARE PROPOSED WHERE SHOWN ON THE PLANS TO
DIRECT RUNOFF INTO A SEDIMENT TRAPPING DEVICE.
3.13 SEDIMENT TRAP- SEDIMENT TRAPS ARE PROPOSED WHERE SHOWN ON THE PLANS.
3.14 SEDIMENT BASIN- SEDIMENT BASINS ARE PROPOSED WHERE SHOWN ON THE PLANS.
3.18 OUTLET PRO TEC7ON-OUTLET PR07EC77ON IS PROPOSED AT THE OUTLET OF PIPES 3.19
RIPRAP- RIPRAP IS PROPOSED AT THE OUTLET OF PIPES.
3.24 TEMPORARY VEHICULAR STREAM CROSSING - A TEMPORARY SPAN ACROSS A FLOWING
WATERCOURSE FOR USE BY CONSTRUC7ON TRAFFIC.
3.25 U77LITY STREAM CROSSING -A U77LITY STREAM CROSSING IS PROPOSED FOR THE
CONSTRUCTION OF A PROPOSED ROAD CULVERT.
3.32 PERMANENT SEEDING -PERMANENT SEEDING IS REQUIRED AND PROPOSED WITH THIS PLAN.
3.38 TREE PRESERVATION AND PROTECTION- TREE PR07ECTION IS PROPOSED WITH THIS PLAN.
SEE THE ESC PLAN FOR THE REQUIRED LOCATIONS.
3.39 DUST CONTROL -DUST CONTROL IS REQUIRED AND PROPOSED WITH THIS PLAN.
MAINTENANCE
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 ATIEN77ON WILL BE GIVEN TO
THE FOLLOWING ITEMS
a. SEDIMENT BASINS AND/OR TRAPS WILL BE CLEANED AND MAINTAINED IN ACCORDANCE WITH
THE VIRGINIA EROSION & SEDIMENT CONTROL HANDBOOK.
b.ALL GRAVEL OUTLETS WILL BE CHECKED REGULARLY FOR SEDIMENT BUILDUP 7HAT 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 DEPOSIT70N REACHED HALF WAY TO THE TOP OF THE BARRIER.
d.ALL SEEDED AREAS WILL BE CHECKED REGULARLY TO SEE 7HAT 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 AT THIS 77ME IS DIGS. BROOK WOOD WITH DIGS MAY
BE REACHED AT (434) 978-4435. IN ADDITION THE OWNER MAY BE CONTACTED. UPON
COMPLETION OF THE PROJECT, THE OWNER WILL BE RESPONSIBLE FOR SITE MAINTENANCE.
TABLE 3.31•B
EE
ACCEPTABLE TEMPORARY SEEDING PLANT MATERIALS
'QUICK REFERENCE FOR ALL REGIONS'
Rate
Planting Dates Species acre
Sept. 1 - Feb. 15 50/50 Mix of
Annual Ryegrass
(L.olium multi-floNm)
U 1111,
Cereal (Winter) Rye
(Secale cereale)
Feb. 16 - Apr. 30 Annual Ryegrass 01 11 III
(L.obum multi-floruml
May 1 - Aug 31 German Millet �U
(Setaria italics)
Source: Va. DSWC
1. SET POSTS AND EXCAVATE A 4"X4"
TRENCH UPSLOPE ALONG THE LINE
OF POSTS.
C
i
ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE VIRGINIA z
EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS VR Source: Va. DSWC
625-02-00 EROSION AND SEDIMENT CONTROL REGULATIONS.
ES-2: THE PLAN APPROVING AUTHORITY MUST BE N077FIED ONE WEEK PRIOR TO GENERAL SLOPE (a:1 OR LEssY
THE PRE -CONSTRUCTION CONFERENCE, ONE WEEK PRIOR TO THE PER Ls FLO
COMMENCEMENT OF LAND DISTURBING ACTIVITY, AND ONE WEEK PRIOR TO THE FINAL INSPECTION. KENTUCKY 31 FESCUE 128 Les.
ES-J.-ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR RED TOP GRASS 2 LBS. J. ATTACH THE FILTER FABRIC TO
TO OR AS THE FIRST STEP IN CLEARING 20 LBS. SEASONAL NURSE CROP 774E WIRE FENCE AND EXTEND
ES-4•A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL 50 LBS IT INTO THE TRENCH.
2. STAPLE WIRE FENCING TO
THE POSTS.
4. BACKFILL AND COMPACT THE
EXCAVATED SOIL.
BE MAINTAINED ON THE SITE AT ALL TIMES SEASONAL NURSE CROP
ES-5: PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS 07HER THAN FEBRUARY 16 THROUGH APRIL ANNUAL RYE ,
INDICATED ON THESE PLANS (INCLUDING BUT NOT LIMITED TO, OFF -SITE MAY 1 THROUGH AUGUST 15 ozTAIL MILLET I I
BORROW OR WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A AUGUST 16 THROUGH OCTOBER ANNUAL RYE `y18�1 /
NOVEMBER THROUGH FEBRUARY 15 WINTER RYE I
SUPPLEMENTARY EROSION CONTROL PLAN TO THE OWNER FOR REVIEW AND
APPROVAL BY THE PLAN APPROVING AUTHORITY. NOTES:
o Es
r-_ i-
r.,
ES-6: THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL _III � "
EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND 1. LIME AND FERTILIZER NEEDS SHALL BE DETERMINED BY SOIL 1 I -III. / / -,_:
SEDIMENTA7ON AS DETERMINED BY THE PLAN APPROVING AUTHORITY. TESTS AND APPLIED IN ACCORDANCE WITH VESCH STD. 3.32. = /
ES -TALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL r -III 1 �j Gam/ I I1
MEASURES AT ALL TIMES DURING LAND DISTURBING ACTIVITIES AND DURING 2. SEED AP LI BE MULCHED ACCORDANCE
W UPON COMPLETION � III - FLOW 1 1
OF SEED APPLICATION, IN ACCORDANCE W� VESCH STD 3.35. r �_ III- (-
SITE DEVELOPMENT UNTIL FINAL STABILIZATION IS ACHIEVED. - I- ES-8.-DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN _ 1 11 ;,III - III
APPROVED WATER FILTERING DEVICE. PERMANENT SEEDING SCHEDULE
ES-9: 774E CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PS NO SCALE EXTENSION OF FABRIC AND WIRE INTO THE TRENCH.
PERIODICALLY AND AFTER EACH RUNOFF -PRODUCING RAINFALL EVENT. ANY SUPER SILT FEN
NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE EFFECTIVENESS OF THE (STD. & SPEC. 3.32 OF VIRGINIA EROSION & SSF (WITH WIRE -BACK .O5-
EROSION CONTROL DEVICES SHALL BE MADE IMMEDlA7EL Y. SEDIMENT CONTROL HANDBOOK, 3RD ED.) NO SCALE
1992
EROSION CONTROL NOTES &• NARRATIVE 1992
PROJECT DESCRIPTION:
THE PURPOSE OF THIS LAND DISTURBANCE ACTIVITY IS TO CONSTRUCT RESIDENTIAL HOMES AND THEIR CORRESPONDING INFRASTRUCTURE
FOR PHASE l OF THE GRANGER PROPERTY DEVELOPMENT. THIS PROJECT PROPOSES TO DISTURB 27.80 or- OF LAND. THE PROJECT WILL
BEGIN ITS CONS7RUCTION WITH THE PROPOSED ESC MEASURES IMMEDIATELY FOLLOWING PLAN APPROVAL, WHICH IS AN7ICIPATED TO BE IN
THE WINTER OF 2022 THE WORK IS ANTICIPATED TO BE COMPLETED WITHIN 18 MONTHS AND TO CONCLUDE IN THE SUMMER OF 2023.
EXISTING SITE COND/T/ONS:
THE AREA OF THE PROPOSED DEVELOPMENT IS LARGELY WOODED AREAS WITH OPEN SPACES AND LIGHT UNDERBRUSH. THERE IS A HIGH
POINT IN THE MIDDLE OF THE SITE, WITH SLOPES DRAINING TO THE NORTH-WEST AND SOU7H-EAST. THE SITE IS GENERALLY STEEP AND
IS WELL DRAINED.
ADJACENT AREAS`
THIS SI7E IS BORDERED ON THE NORTH AND EAST BY A MOORES CREEK. INTERSTATE 64 EXISTS TO THE WEST OF THE DEVELOPMENT. TO
THE SOUTH OF THE PROJECT IS A STREAM TO BE PRESERVED. SILT FENCE WITH WIRE BACKING, DIVERSIONS, SEDIMENT ]RAPS & BASINS,
INLET CONTROLS, A STREAM CROSSING, AND VARIOUS 07HER ESC MEASURES ARE PROPOSED TO LIMIT THE POTENTIAL FOR
CONTAM/NA T70N OF THESE ADJACENT PROPERTIES AND WATERWAYS.
OFFSITE LAND DISTURBANCE.`
OFFSITE LAND DISTURBANCE IS LIMITED TO PUBLIC RIGHT-OF-WAY.
SOILS,•
SEE SOIL DESCRIPTIONS ON THIS PAGE AND THE PHASE I EROSION & SEDIMENT CONTROL PLAN FOR BOUNDARIES, SOIL TYPES AND SOIL
DESCRIPTIONS
CRITICAL AREAS,•
EXISTING STREAMS ARE LOCATED ON THE PROPERTY DOWNGRADIENT FROM THE PROPOSED DEVELOPMENT. THESE AREAS IN ADDITION TO
THE PRESERVED STEEP SLOPES, ARE CONSIDERED TO BE CRITICAL AREAS THE CONTRACTOR SHALL GIVE EXTRA ATTENTION AND CAUTION
IN AND AROUND THESE AREAS TO ENSURE SEDIMENT IS NOT DEPOSITED ON THEM. TREE PR07EC770N FENCING, SILT FENCING, DIVERSIONS
AND SEDIMENT ]RAPPING DEVICES SHALL ALSO BE INSTALLED AS A FIRST STEP IN LAND DISTURBANCE TO ENSURE THESE CRITICAL
AREAS ARE MAINTAINED.
SEQUENCE OF CONSTRUCTION:
1. CONTRACTOR SHALL NOTIFY THE ALBEMARLE COUNTY COMMUNITY DEVELOPMENT ENGINEERING DEPARTMENT TO SCHEDULE A
PRE -CONSTRUCTION MEETING.
2. PRIOR TO DISTURBANCES, THE LIMITS OF DISTURBANCE AND PRESERVED SLOPES SHALL BE FLAGGED AND THE TREE PR07EC77ON
FENCING SHALL BE INSTALLED. NO GRADING MAY BEGIN UN77L THE LIMITS OF DISTURBANCE AND PRESERVED SLOPES HAVE BEEN
FLAGGED AND THE TREE PROTECTION HAS BEEN INSTALLED.
J. NO EROSION CONTROL MEASURES MAY BE REMOVED DURING THE CONSTRUCTION PROCESS WITHOUT THE APPROVAL FROM THE
INSPECTOR ON THE PROJECT.
4. INSTALLA7ION OF THE PROPOSED STONE CONSTRUCTION ENTRANCE, ASSOCIATED TEMPORARY VEHICULAR STREAM CROSSING, & PAVED
WASH RACK SHALL OCCUR NEXT. THE CONTRACTOR SHALL APPLY CONS7RUCT7ON ROAD STABILIZATI0N AS SHOWN ON THE PHASE I
ESC PLAN. CONTRACTOR SHALL ENSURE THE PAVED WASH RACK DRAINS TO AN ADEQUATE E&S MEASURE. THE CONTRACTOR SHALL
INSTALL SEDIMENT TRAP ,41 FOR VEHICULAR WASH OFF, ALONG WITH THE ASSOCIATED DIVERSION BERMS AND RIGHT OF WAY
DIVERSION BERM. 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 MANSPOR77NG TO A
SEDIMENT CONTROL DISPOSAL AREA. STREET WASHING SHALL BE ALLOWED ONLY AFTER SEDIMENT IS REMOVED IN THIS MANNER.
SEDIMENT LADEN RUN-OFF FROM THE CONSTRUCTION ENTRANCE AND DISTURBED AREA WITHIN THE DRAINAGE AREA TO SEDIMENT
TRAP #1 SHALL BE ROUTED TO THE TRAP WITH THE INSTALLA7ION OF THE DIVERSION BERMS AND ROW DIVERSION BERM.
5. ONCE THE CONS7RUCT7ON ENTRANCE & TEMPORARY VEHICULAR STREAM CROSSING HAVE BEEN INSTALLED ALONG WITH SEDIMENT
TRAP #1 AND ITS ASSOCIATED DIVERSION BERMS AND RIGHT OF WAY DIVERSION BERM, THE CONTRACTOR SHALL INSTALL THE UTILITY
STREAM CROSSING (PROPOSED CULVERT CROSSING.) USING THE PUMP -AROUND PROCEDURE DETAILED ON THE PHASE I ESC PLAN.
6. ONCE THE COUNTY AND VDOT INSPECTORS HAVE APPROVED THE CULVERT INSTALLATION, THE CONTRACTOR SHALL CONTINUE TO
ORING
M
FENCE
- f _.^,110 -� PIAsnc FENCE
CORRECT METHODS OF TREE FENCING
+w SON- CORRECT TRUNK ARMORING
.I.
TRIANGULAR BOARD FENCE -
INSTALL THE REMAINING ESC CONSTRUCTION MEASURES, AS SHOWN ON THE PHASE I EROSION & SEDIMENT CONTROL PLAN. THE
MEASURES INCLUDE INSTALLING 774E PERIMETER SILT FENCE. PERIMETER 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 Source: Va. DSWC
DISTURBANCE TAKES PLACE.
7. ONCE THE PERIMETER EROSION CONTROL MEASURES HAVE BEEN INSTALLED, AND THE COUNTY INSPECTOR HAS APPROVED THESE
MEASURES, THE CONTRACTOR MAY PROCEED WITH THE LAND CLEARING OPERATIONS FOR THE INSTALLA77ON OF THE SEDIMENT TRAPS Paved construction entrance for erasion control plans
AND SEDIMENT BASINS THE CONTRACTOR SHALL BEGIN BY CLEARING THE AREAS REQUIRED TO ACCESS THE LOCATIONS OF SEDIMENT
BASINS 1, 2, & 3, SEDIMENT TRAPS 1, 2, & J. INSTALLATION OF SEDIMENT BASIN 1, 2, & 3, AND SEDIMENT TRAP 1, 2, & 3 SHALL
IMMEDIATELY FOLLOW 774E SELEC77VE CLEARING. FOLLOWING THE INSTALLA7ION OF THESE MEASURES, THE CONTRACTOR SHALL INSTALL
THE DIVERSIONS ANY REMAINING EROSION CONTROL 17EMS AS SHOWN ON THE PHASE I EROSION CONTROL PLAN SHALL ALSO BE
CONSTRUCTED AT THIS TIME.
8. ONCE ALL THE PHASE I EROSION CON7ROL I7EMS HAVE BEEN INSTALLED & ARE OPERATIONAL, DRAINAGE IS PROPERLY CONVEYED TO
THESE MEASURES, AND THE ESC INSPECTOR HAS GRANTED APPROVAL, THE CONTRACTOR CAN BEGIN CLEARING THE REMAINDER OF
THE SITE. TEMPORARY SEEDING, PERMANENT SEEDING AND DUST CONTROL SHALL BE IMPLEMENTED AS REQUIRED.
9. AFTER CLEARING THE PROPOSED AREAS, THE CONTRACTOR CAN PROCEED TO PHASE Il OF THE EROSION & SEDIMENT CONTROL PLAN.
THE CONTRACTOR SHALL BEGIN ROUGH GRADING THE SITE TO THE CONTOURS SHOWN ON THE PHASE Il EROSION & SEDIMENT
CONTROL PLAN. MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AS A FIRST STEP WITH ANY LAND DISTURBANCE
AC77NTY AND SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE LAND DISTURBANCE TAKES PLACE.
10. THE CONTRACTOR SHALL INSTALL ANY REMAINING EROSION CONTROL I7EMS AS SHOWN ON THE PHASE Il EROSION CONTROL PLAN.
TEMPORARY SEEDING, PERMANENT SEEDING AND DUST CONTROL SHALL BE IMPLEMENTED AS REQUIRED.
if. PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS WITHIN SEVEN DAYS AFTER FINAL GRADE IS
REACHED ON ANY PORTION OF 774E SITE. TEMPORARY SOIL STABILIZATION SHALL BE APPLIED WI77-IIN SEVEN DAYS TO DENUDED
AREAS 7HAT 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.
12. ONCE THE S17E /S ROUGH GRADED, THE CONTRACTOR SHALL BEGIN PHASE 111 OF THE EROSION & SEDIMENT CONTROL PLAN. 774E
CONTRACTOR CAN BEGIN INSTALLATION OF THE UTILITIES, CURB AND GUTTER, AND ROADS. INLET PROTECTION SHALL ALSO
INSTALLED AS THE STORM SEWER IS CONSTRUCTED. INLET PR07EC77ON 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.
13. THE CONTRACTOR SHALL ALSO WORK WITH THE ESC INSPECTOR ON THE 77MING OF THE REMOVAL OF SEDIMENT TRAPS 2 &3, AND
SEDIMENT BASINS 2 & J. SEDIMENT TRAPS 2 & 3 AND SEDIMENT BASINS 2 & 3 SHALL REMAIN OPERATIONAL AS LONG AS
POSSIBLE, AND ONLY BE REMOVED AT THE 77MING OF THE INSTALLATION OF THE PROPOSED WALLS IN THESE AREAS THE
CONTRACTOR SHALL PAY SPECIAL ATTENTION TO THE SILT FENCE BENEATH THESE AREAS AT THIS TIME AND ENSURE THE SILT
FENCES TO BE EFFECTIVE. UPON INSPECTOR APPROVAL 774E CONTRACTOR SHALL REMOVE SEDIMENT TRAP 2 AND 3 AND SEDIMENT
BASINS 2 & J.
14. ONCE PHASE III OF CONSTRUCTION IS COMPLETE THE SITE IS STABILIZED AND THE INSPECTOR HAS GIVEN APPROVAL, THE
CONTRACTOR CAN THEN REMOVE SEDIMENT TRAP 1 AND SEDIMENT BASIN 1 AND INSTALL THE PROPOSED UNDERGROUND SWM
FACIL177ES IN THESE AREAS. AT THIS TIME, THE CONTRACTOR CAN REMOVE THE REMAINDER OF THE EROSION & SEDIMENT CONTROL
MEASURES NO ITEM SHALL BE REMOVED THROUGHOUT ALL PHASES OF CONSTRUCTION UNLESS THE UPSTREAM AREAS ARE
STABILIZED AND THE INSPECTOR GIVES PERMISSION.
15. THE CONTRACTOR SHALL 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.
16. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS AFTER FINAL SI7F 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.
3.02 1992
STONE CONSTRUCTION ENTRANCE
Z_ VDDT NI I I -\ POSITIVE DRAINAGE
COURSE AGGREGATE B To SEDIMENT
RAPPINGG DEVICE
• MUST EXTEND FULL WIDTH
OF INGRESS AND EGRESS
OPERATION PLAN VIEW
SECTION A -A
SECTION B-B
Source: Adapted from 1983 Maryland Standards for Soil
Erosion and Sediment Control, and Va. DSWC
I-AUJUll
EXISTING
PAVEMENT
MIN,
BERM
Plate 3.02-1
TYPICAL ORIENTATION OF
TREA TMENT - 1
(SOIL STABILIZATION BLANKET)
ON SHALLOW SLOPES, STRIPS OF
NETTING PROTECTVE 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.Alb,
ON SLOPES, APPLY
PROTECTIVE COVERING PARALLEL
TO THE DIRECRON OF FLOW
AND ANCHOR SECURELY.
,111 11, L
BRING MATERIAL DOWN TO A LLVEL AREA BEFORE 3_
TERMINATING THE INSULUnON. TURN THE END
UNDER 4' AND STAPLE AT tY INTERVALS.
�__Iklllk -
. Y
Source: Adapted from Ludlow Products Brochure
IN DITCHES, APPLY PROTECTNE COVERING
PARALLEL TO THE DIRECTION OF FLOW.
USE CHECK SLOTS AS REQUIRED. AVOID
JOINING MATERIAL rJ THE CENTER OF
THE DRCH IF AT ALL POSSIBLE,
.-
.g1TrTc,e .,
r
3.38
Plate 3.38-2
O
7.
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IIIIIIIIIIF
0
. ,
INAGt
.,, 1
SECTION A -A
A uwminuu wain lap of 1 Inch tuusl be utn1alletl with a uminmInl 1 Inch ball,- 1
dnaofl cah a suppKUM a wn>1t hose wwll a duuuete of 1 5 awbe.K ti+l ade, II I I
.oll`•tatd pies>vie \Canal wain umst be tamed awa% hom the ewauce A• .RI
apPtovetl settlatg area to teuoce sedauettl .• ll ne(t uelt shall be pie%-euteti hour
ento ulc•'torn tbam ddc he=oI Tcatet c. nu �t
PAVED WASH RACK
NO SCALE
3.36 1992
3.01
I$
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Plate 3.36-1 VDOT Road and Brie Standards
Plate 3.01-1
SCOTT/R. 0t LLINS�Z
Lic. No. 035791,EC
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*10I
LIMITS OF TREE CLEARING (TYP.)
PHASE I D.A. TO SEDIMENT
TRAP #3 - 2.75 ACRES
PROPOSED LIMITS OF / i // �� i �� �� V A°rw\ V A�a � I V /
DISTURBANCE (TYP.) / // — -- �� \ K \ V I ` A \ \
VAA\
/ \�
�A
i \ I
A /
PHASE I D.A. TO SEDIMENT
LIMITS OF TREE CLEARING (TYP.)
TRAP #2 = 2.99 ACRES y�.�
PROPOSED LIMITS OF! EXISTING PRESERVED
DISTURBANCE TYP.
STEEP SLOPES (TYP.)
V \ Ii%� /��♦ / �// �/ / / 1 / .� l I V AA v �v v / / / / /
_ �\��\�VA ,.,, �/��� �, �'/�% ♦�- ////// / / / / I I / I / / � I J l� /i�v � 1 A \ VAA �� / / / /
\V AA
\VAV A ♦ / / 1.Ivy
I (//i
DISTURBANCE EDLIMITS OF\
\ \ \ \
I�. / // 1 �\ \ DISTURB
PHASE I D.A.SEDIMENT V�
BASIN #3=3.13ACRES F-'",�✓ �/// /// / / / 1/ 1 A
LIMITS OF TREE CLEARING (TYP.),
1 VAV A / / / / / / /
PROJECT BOUNDARY (TYP.) � � / l � / /t. / � r -' PROPOSED STOCKPILE AREA TO BE
ENCOMPASSED BY SILT FENCE AT ALL TIMES
PROPOSED LIMITS OF � � / � ' � / / %
V A V A \ V AA DISTURBANCE (TYP) / / j /�
I l/ / / / / EXISTING MANAGED / / / — .� — --_
V A A \ \ VA �AVA �/� / STEEP SLOPES (TYP.) PHASE I D.A. TO SEDIMENT
\ \VA\ \V BASIN #1-8.32 ACRES
EXISTING TREELINE(TYP.) I
10
EXISTING ioo' STREAM BUFFER (TYP.)
iii�PROJECT BOUN AD RY TYP.
/ �) //// //i/�// � (TYP.)
— — — — — — — — — / / / /� % // / // // I 1 A / �� // / / I EXISTING ioo-YEAR FLOODPLAIN (TYP.)
— / / \ / / / / �/ / // // / / / I I f/, PROPOSED LIMITS OF / \
/ / BASIN #2 - 5.97 ACRES DISTURBANCE (TYP.) \\ \ \
jj/ PHASEID.A.TOSEDIMENT°�/ / / 1 ! I ��
/ �/ / ,EXISTING PRESERVED
STEEP SLOPES (TYP.)
\ V — / / / ' LIMITS OF TREE CLEARING TYP.
SBz / ///" \ �—
EXISTING STREAM
LEGEND LEGEND
SAFETY FENCE PER VESCH 3.01
P/ LIMITS OF LAND DISTURBANCE
HASE I D.A. TO SEDIMENT
\ \ \ \ \ \ \ I j i / / CE CONSTRUCTION ENTRANCE PER VESCH 3.02 -4 4 DIVERSION DIKE
T1�� TRAP #1 = 0.44 ACRES
G 1 AP H IC S C ALE V v V v v vv� vv v v CONSTRUCTION ROAD STABILIZATION VESCH 3.03 E — BOUNDARY LINE
aoo a so aoo ' zoa —
SF SUPER SILT FENCE PER VESCH 3.05 SILT FENCE
O /) � INLET PROTECTION PER VESCH 3.07 —65 .3 75— PROPOSED CONTOUR
/ / A� VA� \ \ \ CULVERT INLET PROTECTION VESCH 3.08 ����������� DRAINAGE DIVIDE
( IN FEET) I A VA \5 / / / /� / / /
100 ft. — / AA A \ \ \ A DIVERSION DIKE PER VESCH 3.09 SOILS LINE
INRIGHT OF WAY DIVERSION PER VESCH 3.11 WATER WAY
ST SEDIMENT TRAP PER VESCH 3.13 TREELINE
SIB SEDIMENT BASIN PER VESCH 3.14 PRESERVED SLOPES
ch
pp OUTLET PROTECTION PER VESCH 3.18 MANAGED SLOPES
SWM FOREST &
SC TEMPORARY VEHICULAR STREAM CROSSING PER VESCH 3.24
p / / — _ — — / — OPEN SPACE EASEMENT
\ V A \ V \ \ a � ! / / i �� — _ _ i / / TS TEMPORARY SEEDING PER VESCH 3.31
PS PERMANENT SEEDING PER VESCH 3.32
TP TREE PROTECTION TAPE PER VESCH 3.38
\ \ \ asa / / / pC DUST CONTROL PER VESCH 3.39
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9/28/22
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SCALE
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SHEET NO.
5
TS \ TP SF PROPOSED LIMITS OF
♦ HEIGHT CONTRACTOR SHALL
BE 18" (MIN.) IN \ DISTURBANCE (TYP.) TH OF
ALL ENSURE POSITIVE'
�OP j ♦ TS ♦ SLOPE IS MAINTAINED. BERMS SHALL BE Skr
STABILIZED AS A FIRST STEP IN DISTURBANCE. A �•� �� ��c v
MATCHLINE / / �� \ \'� SIC x. iLINSZ
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/ / � I I I r DC / / • �� �' Lic. No. 035791 a
f �/� '
5 E E SHEET 7 x / / / . / / / A D' �� s ��0 9/28/22
PHASE I D.A. TO SEDIMENT
cP _ II / / ; ♦� BASIN #3 = 3.13 ACRES ' / / ° DC / / / / / \ I \ LIMITS OFTREE CLEARING (TYP..) jONAL F
�wEXIST ING TREELINE (TYP
s /
PROJECT BOUNDARY (TYR) / �� / / TS FLOW DIRECTION !PROPOSED STOCKPILE AR`
BE TS �J / / ;i SF S
o / / ARROW (TYP.) ��ENCOMPASSED BY SILT FENCE AT ALL TIMES-
/ 4Si / + / ♦� / / / U
APHASE I D.A. TO SEDIMENT r
PROPOSED LIMITS OF - / / _ / / / / v
00,
BASIN #1 8.32 ACRES
9 DISTURBANCE (TYP. ♦ xx „ / / / _ / • / DC SAF
i SF � DD / i �° / l l ° l / /
i / - • /� / / /EXISTING MANAGED - �� / / / w / / / / ♦ o / /' zo
STEEP SLOPES (TYP.) - _ / / / / / 0
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♦ ♦ LU
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DRAINAGE DIVIDE (TYP.)
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DC/♦
XIS 1ING ioo' ST�REAM BUFFER (TYP.)
1992 3.24 / J /
° /
/ i /
NOTE: ALL DIVERSIONS SHALL BE 18 MIN. IN
r
TEMPORARY CULVERT CROSSING / �/ HEIGHT CONTRACTOR SHALL ENSURE POSITIVE I I / / •� / / �` TS I / 1-
/ / /���� / / / // / // / �% % / o00
/ SLOPE IS MAINTAINED. BERMS SHALL BE / / / j �/
� v � o / // STABILIZED AS A FIRST STEP IN DISTURBANCE. PROJECT BOUNDARY (TYP.)
/ GRY � � I � j / / �
tp PACOF PIPE CULVERTS N / / I I ' / D D r 6 B / i
VDOr /1 COARSE AGGREGATE 6" DEEP TOGETHER ROwI, / /y /
\ / • / / / • / / / XISTING ioo-YEAR FLOODPLAIN (TYP.)
/2 CIA ER v� I / / / \ / / D C
OF PIPE OR I2', EARTH FILL COVERED \ / . / / / OO ' X / / /
WHR:HEVER IS BY LARGE ANGULAR / / y / PHASE I D.A. TO SEDIMENT a - / /
/ GREATER ROCK \ / / / /� /
vv / BASIN #2 = 5.97 ACRES// , 4 �%v
// j R/ / /�//tea i �� /F / / / j/ ��� ,?
/ / o
4 / TS // / / PROPOSED LIMITS O/ / / / / / i �♦ DISTURBANCE (TYP.) o 0-)
SF / / / // // / //� / // /� / �/ / DC •� / / �� j �I� °�� co
FILTER CLADI
\ ♦ / / / ^ / i / / /
4 / /
♦ �// / // �j // / / / // �/ /� / �,/,rSTINGPRESERVED / �"�/ The Virginia Stream Restoration & z N
/ • / / STEEP SLOPES (TYP.) / Stabilization Best Management Practices Guide
ELEVATION szo / / / r/
/ // / / ���; i� �� ' i. DETAIL 5.1E PUMP -AROUND PRACTICEzz
c
w
VDOT dl COARSE' LARGE ANGULAR / / / / / / / • / T / % S F 1 - /
GATE ROCK OVER /
ADORE / / N
EARTH FILL � � / / / / / � i ,/ � � � � � Dewatering Device C:)
/ / / / / / / / ♦ TP IMITS OF TREE CLEARING (TYP.) / or dirt/sediment bag) Spec. 3.26 N
P Diversion Pump Q
�So / LOCATION OF ].5 CY DUMPSTER / / - / �'' .--j
♦ / Discharge Hoses ti N
� P Intake L.L
/ /, / / / /�// / j ( _ / ♦ SAF / / / / � Dewatering Pump Hose Q
J
: LOCATION OF FUELING AREA. THE FUELING TANK SHALL BE COMPLETELY SURROUNDED / / / i P (as needed) ..
f BY A 2' DEEP, 2' WIDE EARTHEN BERM WITH A HEAVY MIL POLYETHYLENE LINING, OR BE >
PLACED IN AN IMPERVIOUS OPEN -TOP DUMPSTER. THE PROPOSED BERM OR DUMPSTER B2 / P / / !� "� A A L
-- SHALL CONTAIN FUEL IN THE EVENT OF A SPILL. CONTRACTOR SHALL ENSURE VOLUMEi Flow Work Area �
i 50' MINIMUM I I ) I SQ• MINIMUM / I F
CAPACITY IS io%LARGER THAN THE MAXIMUM VOLUME OF STORED FUEL. / i / EXISTING STREAM j " ' (%�
z
TOP OF BANK - _ TOP OF BANK / / / g 0
00"_ Sandbag/Stone /Stone Barrier
NOTE: THE TREE PROTECTION FENCING SHALL BE �� / / / U) U
/ PLACED ON THE LIMITS OF DISTURBANCE LINE, WITH ' / Work Area Sump -hole LLJ 1
DIVERSION ,wD/ Drn=RSION nrlD/ _ TS + �. / / ;'THE SILT FENCE INSTALLED IMMEDIATELY ADJACENT /� Discharge Pump Length Not To Exceed Or Pool
OR swALE PLAN VIEW oR sWALE 1 `� / .- ' ,LOCATION OF PORTA-POTTIES -
\ ♦ Y /% = �� / TO THE TREE PROTECTION FENCING. THE LIMITS OF Into Velocity That Which Can D 12" Min Depth z
D- / / w \ Dissipater Completed In One Day 2' Min Diameter L J
DISTURBANCE LINE AND TREE PROTECTION FENCING
CRS . ��♦ ARE OFFSET FOR GRAPHICAL DISPLAY PUS. PLAN _J
\ Source: Va. DSWC Plate 3.24-2 %
j UMP-AROUND INSTALLATION GUIDELINES Q
�j" SF' DEWATERIN DEVICE
1. EXCAVATE SUMP HOLE OR IDENTIFY EXISTING = LU LLI
\ I \
X
I
1992 3.18
PIPE OUTLET CONDITIONS
A A
3d° '
d°
PIPE OUTLET TO FLAT
AREA WITH NO DEFINED
PLAN VIEW CHANNEL
k L a
I 0K -.
d
SECTION A -A FILTER CLOTH KEY EV E"-9": RECOMMENDED FOE PERIMETER
A
A 3d° (MIN.)
d°
PIPE OUTLET TO WELL
DEFINED CHANNEL
PLAN VIEW 1
L a 0%-.
d
SECTION A -A
FILTER CLOTH KEY IN C-9': RECOMMENDED FOR ENTER PERIMETER
NOTES: 1. APRON LINING MAY BE RIPRAP, GROUTED RIPRAP, GASTON
BASKET, OR CONCRETE.
2. ID 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.
Source: Va. DSWC Plate 3.18-1
SIF _ J
PAVED WASH RACK/ / I POOL UPSTREAM OF THE WORK AREA. 0
1992 3.08 / - 2. INSTALL VELOCITY DISSIPATER DOWNSTREAM
PHASE I D A TO SEDIMENT (MIN.12'x7o') / ♦ Sheeting
ACRES / / OFTHEWORKAREA. PROPOSED RIPRAP cl�//
TRAP #1 = 0.44 OUTFALL SHALL SERVE AS VELOCITY DISSIPATER LL Z
\ Base Flow + 1 Foot
RWD j� 3. SETUP PUMP AND HOSE/PIPE. Work Area 12 Foot Minimum) a- O
j TS OP 4. INSTALL UPSTREAM AND DOWNSTREAM W
BARRIERS AND START PUMP. ~
♦ TS DD CRS / LOCATION OF SANDBAGS 5. USE DE -WATERING PUMP AND DE -WATERING Cross Section Of Sandbag/Stone Diversion O
/ / DEVICE TO REMOVE WATER LEFT BETWEEN THE W
o• / '� IN -STREAM BARRIERS AFTER PRIMARY PUMP SECTION A -A V LLI
SF i INSTALLATION AND AS NEEDED DURING
♦ ST1 SC CONSTRUCTION. LLl Lu
x �%" / 6. COMPLETE IN -STREAM CONSTRUCTION Adapted From LU (f)
♦� �� ACTIVITIES AND REMOVE IN -STREAM BARRIERS. F Maryland's Waterway
C �� * onstruction Gudielines Q
\ SAF �, o/ 7. RESTORE/REPAIR IMPACTED STREAM AREAS.
i i
P SF - / / / r F TEMPORARY INSTREAM DECEMBER 2003 VIRGINIA DEPARTMENT OF CONSERVATION RECREATION
CONSTRUCTION MEASURES
I
sF IP / SF � - j � � / LEGEND LEGEND � w
NOTE: PUMP -AROUND SHALL BE USED TO INSTALL CR /
PROPOSED 72" RCP CULVERT. SEE DETAIL ON THIS SHEET. CE I& SAFETY FENCE PER VESCH 3.01 LIMITS OF LAND DISTURBANCE
•� CE CONSTRUCTION ENTRANCE PER VESCH 3.02 DIVERSION DIKE J Q
v v / 1, CRS CONSTRUCTION ROAD STABILIZATION VESCH 3.03 BOUNDARY LINE
• ` �' LOCATION F SANDBAGS / O
4� / SILT FENCE SF SUPER SILT FENCE PER VESCH 3.05 C:)
f DIRECTION OF FLOW IN 13 E IP INLET PROTECTION PER VESCH 3.07
-653.75- PROPOSED CONTOUR 0
♦ '"' `,{� /,` 4y - j CIP CULVERT INLET PROTECI-ION VESCH 3.08 M m DRAINAGE DIVIDE LU
♦0001", / - `�`C/ �' _ /_� /_ / DID DIVERSION DIKE PER VESCH 3.09 SOILS LINE
♦ / W RIGHT OF WAY DIVERSION PER VESCH 3.11 - - - - WATER WAY00*
W
♦^`� / � /GfA-P�C-- ALE r ST SEDIMENT TRAP PER VESCH 3.13 �� TREELINE pLU
♦/♦/ / i00 SB SEDIMENT BASIN PER VESCH 3.14 PRESERVED SLOPES JOB NO.
`�/ pp OUTLET PROTECTION PER VESCH 3.18 ZZ. , ' ,,'t =J MANAGED SLOPES 202198
SWM FOREST &
/•O IN )EE'P� SC TEMPORARY VEHICULAR STREAM CROSSING PER VESCH 3.24 I --' OPEN SPACE EASEMENT SCALE
/ 1 -ice h = 50 ft. TS TEMPORARY SEEDING PER VESCH 3.31
1 H=50I
♦�� �/
IQ, PS PERMANENT SEEDING PER VESCH 3.32
Source: Adapted from VDOT Standard ` _ j / TP TREE PROTECTION TAPE PER VESCH 3.38 SHEET NO.
Sheets and Va. DSWC Plate 3.08-1 ` / A
0 1,5C DUST CONTROL PER VESCH 3.39
.0000
LEGEND LEGEND _4�° -
SAF SAFETY FENCE PER VESCH 3.01 LIMITS OF LAND DISTURBANCE
_ e
CE CONSTRUCTION ENTRANCE PER VESCH 3.02 + DIVERSION DIKE _ 40/ - - _
—430
CRS CONSTRUCTION ROAD STABILIZATION VESCH 3.03 BOUNDARY LINE 77 — -CD
//'°� _ _ - -_ _- •-�— O SCOTT R. LLINS'�
U L1C. NO. 035791
SF SUPER SILT FENCE PER VESCH 3.05 `— SILT FENCE ♦� - �� - — --4 �' A f DIRECTION OF FLOW J _ --' — = o n 110 9/28/22cy4
IP INLET PROTECTION PER VESCH 3.07 S ♦ / - i� \ �♦ �' PROJECT O�
—653.75— PROPOSED CONTOUR S / \ co
c° N ASS gGt
CIP CULVERT INLET PROTECTION VESCH 3.08 DRAINAGE DIVIDE - --- S — S — S —� \ \ \ I \ B UNL')ARY ( \ , d ZONAL E
�i / / -- 450 \� TYP.) . �a
ow
DD DIVERSION DIKE PER VESCH 3.09 — SOILS LINE - �' W RIGHT OF WAY DIVERSION PER VESCH 3.11 TREELINE ♦ �/ V - - --- �I • a
— WATER WAY _ /co
ST SEDIMENT TRAP PER VESCH 3.13 - — \ TP N L
/ N
4yo -- — PROPOSED DISTURBANCE LIMITS (TYP.) �� \ wMa
SB SEDIMENT BASIN PER VESCH 3.14 PRESERVED SLOPES / 3 9E O • d�
OP OUTLET PROTECTION PER VESCH 3.18 E �� MANAGED SLOPES / - + • �a •e.
SWM FOREST & AF / / �j ii i d
SC TEMPORARY VEHICULAR STREAM CROSSING PER VESCH 3.24 [- �` = S/ \ a \
OPEN SPACE EASEMENT \ +
TS TEMPORARY SEEDING PER VESCH 3.31 \ i4�o �/ - - _SAF- - A TP ° SF
PS PERMANENT SEEDING PER VESCH 3.32
O
/ / -- - r ter-- • \ \ x \ \
TP TREE PROTECTION TAPE PER VESCH 3.38 \ \ V � / � i 4 � � / � � � _ �� \ \ 3 � � � X • x � -. �
Oc DUST CONTROL PER VESCH 3.39 \ = / NOTE. THE TREE PROTECTION FENCING SHALL BE� j - X o m
f� TS X r/� m
• PLACED ON THE LIMITS OF DISTURBANCE LINE, WITH-- \ ° _ — SF cn V/ � m
THE SILT FENCE INSTALLED IMMEDIATELY ADJACENT /i i _ �/ —480— u
TO THE TREE PROTECTION FENCING. THE LIMITS OF // - _ _ A { TP Z o Uri
DISTURBANCE LINE AND TREE PROTECTION FENCING \ �� - s� z
ARE _OFFSET FOR GRAPHICAL DISPLAY PURPOSES ��� - - ° IT \\ - _ \ I LIM S OF CLEARING (TYP.) U)
_ H > g
w a
v i� ul
DC
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Q6 PHASE I D.A. TO SEDIMENT \ \ I I W
/ / j�i i �� A TRAP #3 = 2.75 ACRES ��\ °
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GRAPHIC
4 2C
( IN FEET )
inch = 50 ft.
LIMITS OF TREE CLEARING (TYP.) D
5
PROPOSED LIMITS OF / / ✓ �/19 RAINAGE DIVIDE (TYP.)\ \ ?�
DISTURBANCE (TYP.) �/ / V A n c� '\ Lu r-4
co
DD • // / A ,�\ C
SAF 0� I\ \\I I
EXISTING MANAGED '� x I
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rn
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/ r�STzrr / /• / A/ A I \/ / / — \ \ DC I I I ����' �ll� �� � � ��, M
x /� / // / 1 A �\
rn
V
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/ /•/ / �/ / / \ / V •� ���� ��� LIMITS OFTREE CLEARING (TYP.) I ��
SF y_ / /PHASE I D.A. TO SEDIMENT
/ • / / TRAP #2 = 2.99 ACRES i
/ • PROPOSED LIMITS OF I � r x� I N Z
TP ° / / DISTURBANCE TYP.) EXISTING PRESERVED Q
y
/• / / �� �� / / ■ `� / / • / / / #* I 1 • ( STEEP SLOPES (TYP.) I N
/SOILDESCRIPTION(TYP. \ ' / / I l / / I \ Q J
.� I DD ��l Cn I
x' x �l �� I Lu > O
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�/ / SF ������ � ��•,� f—
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SOIL LINE (TYP.) NOTE: THE T KEE PROTEC I IO N ENCIN� SHALL BE l� U)
� PLACED ON THE LIMITS OF DISTURBANCE LINE WITH � ®' W
THE SILT FENCE INSTALLED IMMEDIATELY ADJACENT ��
/ / �� / / • / / TO THE TREE PROTECTION FENCING. THE LIMITS OF F LLJ
DISTURBANCE LINE AND TREE PROTECTION FENCING L9
O
/ % _ / / / / / / / • �• + x ARE OFFSET FOR GRAPHICAL DISPLAY PURPOSES.
_ DD/ /// /•/ / / I I I I I I z w o
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/ // w c- o
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/ //�/ /// / � / � Lu
E �t
T BOUNDARY (TYP.)
1190
PROPOSED LITS
g9��00 DISTURBANCE (TY
i
\ TSB /�/ / / / / / / / / / l l, xy�Ty� / \ \/� / / / TP SF / LLJ W
SF PROPOSED LIMITS OF �\ Lu
/ / / / / / < �, / • NOTE: ALL DIVERSIONS SHALL BE 18 (MIN.) IN DISTURBANCE (TYP.) Q
HEIGHT CONTRACTOR SHALL ENSURE POSITIVESLOPE IS \ x
STABILIZED AAS A FIRST STEP IN DISTURBANCE. �•� \ INTAINED. BERMS SHALL BEVA \ V A s�O,��
Oc / / MATCHLINE / / / A� \ V \ \\V AV'' o
/ Oc �, \/ / I \ \ \V �. o
/ / i SEESHEET6 x /� X�� / �/.� 1 \ \ \ D N
Sg3� PHASE I D.A. TO SEDIMENT TPV�
/ / i ' / / / •� BASIN #3 = 3.13 ACRES LIMITS OF TREE CLEARING\TYP.
EXISTING TREELINE (TYP.)
/ 0 Lu
lw
TS FLOW DIRECTION * ����PROPOSED STOCKPILE AREA TO BSF m
E TS PROPOSED TEMPORARY PIPE OUTFACE /� sLn
♦� ARROW (TYP.) / ENCOMPASSED BY SILT FENCE AT ALL TIMES i % / / Io6 No.
\ / / / / / / •� / / / / / �/ 0/ / I l I • — 202198
/ �� / �/ x� y x "� / / / / / ♦�/ PHASE I D.A. TO SEDIMENT / / / / 5B1 • SCALE
OF BASIN #1
P.) ° VE
- / / / / / / Oc AF 1 1 „=50'
SF / N !. — _ _ / / / ° � l i' / / / I I \ S
. D / • e ISTING MANAGED / / �� / / / i / / / / • / / SHEET NO.
/ j STEEP SLOPES (TYP.) PROPOSED TEMPORARY PIPE OUTFALL / / / 7
NOTE: ALL DIVERSION (MIN.) "0 \ I TP \
S SHALL BE 18� MIN. IN S � � I SF PROPOSED LIMITS OF
DISTURBANCE (TYP.)
x AX` x HEIGHT CONTRACTOR SHALL ENSURE POSITIVE
SLOPE IS MAINTAINED. BERMS SHALL BE s
u _ o STABILIZED AS A FIRST STEP IN DISTURBANCE.
DC / MATCHLIN szp / V A V A V� " DD �'�SCOTT R. hilrrsz
��
-SEE H ET
\ S E g // / 1
l PHA 9/28/22
3 � o _ LIMITS OF TREE CLEARING (TYP.) ` IONAL E
SE II D.A. TO SEDIMENT i-'-----------� � � �� � a � � � � � � � � � � \ � � � � TP
BASIN #3 = 4.62 ACRES
EXISTING TREELINE (TYPj
DRAINAGE DIVIDE (TYP.)
PROJECT BOUNDARY (TYP.) TS �� PROPOSED STOCKPILE AREA TO BE
ENCOMPASSED BY SILT FENCE AT ALL TIMES
s
90
- f
\PHASE II D.A. TO SEDIMENT #
/ \ iS
� / � BASIN #1 = 10.77 ACRES / � �
PROPOSED LIMITS OF �� � � � SAF
9� DISTURBANCE (TYP.) � / � � � FLOW DIRECTION � - � \ I
/ ARROW (TYP.)
SF
i
- - D� � � � � EXISTING MANAGED
STEEP SLOPES (TYP.)
\ EXISTING TREELINE (TYP. A� w
u � x�/ / � V A Z o
U)
i *00 ► / \ s �y �' / v� v v v�. o z 0
LU
z�
vl
1=4
0
S,a / ,\\ a \ui
FLOW DIRECTION
1
ARROW(TYP.)
Cl
\ \ v
XISTING ioo' STREAM BUFFER (TYP.) %
NOTE: ALL DIVERSIONS SHALL BE 18" (MIN.) IN w N
\ \ HEIGHT CONTRACTOR SHALL ENSURE POSITIVE \ \ , w
I / SLOPE IS MAINTAINED. BERMS SHALL §E /� y orj
STABILIZED AS A FIRST STEP IN DIST kBANCE. �� A �� �� PROJECT BOUNDARY (TYP.) O
EXISTING ioo-YEAR FLOODPLAIN (TYP.)
� 5° i � i PHASE II D.A. TO SEDIMENT �` � � �. �� \ \
i - 3.41 ACRES \ ��° \ �i
� � ��� �PROPOSED LIlMlrTsbF
DISTURBANCE (TYP.) o 00
SF / / A // cM
� � � � � �, � � i � o / / /�EXISTING PRESERVED � � pry/ � j/ / N
&� ��
X �
� Q
v _ �° i / Tp IMITS OF TREE CLEARING (TYP.j V Q J
—,so oo/ C%4
\ \ / LOCATION OF 15Cy DUMPSTER (� a-
\ LOCATION OF FUELING AREA THE FUELING TANK SHALL BE COMPLETELY SURROUNDED / W Q
\ \ \ J BY A 2' DEEP, 2' WIDE EARTHEN BERM WITH A HEAVY MIL POLYETHYLENE LINING, OR BE i O
PLACED IN AN IMPERVIOUS OPEN -TOP DUMPSTER. THE PROPOSED BERM OR DUMPSTER �SBz / / A /' / LJ
_ A / Li
SHALL CONTAIN FUEL IN THE EVENT OF A SPILL. CONTRACTOR SHALL ENSURE VOLUME P / �� J
i \ CAPACITY IS 3.o% LARGER THAN THE E MAXIMUM VOLUME OF STORED FUEL. J Z
EXISTING STREAM O
C— V
\ \ \ / NOTE: THE TREE PROTECTION FENCING SHALL BE
PLACED ON THE LIMITS OF DISTURBANCE LINE, WITH W
/THE SILT FENCE INSTALLED IMMEDIATELY ADJACENT / Z
TO THE TREE PROTECTION FENCING. THE LIMITS OF >- LJJ
DISTURBANCE LINE AND TREE PROTECTION FENCING
OCATION OF PORTA-POTTIESPURPOSES./ J
ARE OFFSET FOR GRAPHICAL 6 � \
n
Q
v A \ \ D asp/ RWD F U Ln
SF
op
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PHASE II D.A. TO SEDIMENT
V A \ TRAP #1 = 0.37 ACRES i (� W
PAVED WASH RACK W
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\ � r1
\ yA \ \ yAAV �STi ) F— �/ —
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SAFETY FENCE PER VESCH 3.01 LIMITS OF LAND DISTURBANCE \ SAF
CONSTRUCTION ENTRANCE PER VESCH 3.02 � � �-- DIVERSION DIKE � Q
CRS CONSTRUCTION ROAD STABILIZATION VESCH 3.03 i BOUNDARY LINE
48� — — SILT FENCE O
o SF SUPER SILT FENCE PER VESCH 3.05 O
/ IP INLET PROTECTION PER VESCH 3.07 f DIRECTION FLOW N
—653.75— PROPOSED CONTOUR 0
1 Q5- CIP CULVERT INLET PROTECTION VESCH 3.08
DRAINAGE DIVIDE w
DO DIVERSION DIKE PER VESCH 3.09 - SOILS LINE u ti
W RIGHT OF WAY DIVERSION PER VESCH 3.11 w
�—.,—..—.,_ WATERWAY G �
y /, .�J TREELINE
\ \\ \ \ \ \ \ \ \ \ \ /`� /\G APF C/SCALE ST SEDIMENT TRAP PER VESCH 3.13 � _
\ =J = a Ln
�o / 3s— i so ioo % SB SEDIMENT BASIN PER VESCH 3.14 PRESERVED SLOPES JOB NO.
!L � / � OP OUTLET PROTECTION PER VESCH 3.18 �.,-���. 'z*1 , �fti-�1 MANAGED SLOPES 202198
�1 �C \ SWM FOREST & 17(7
IN E'i—}— SC TEMPORARY VEHICULAR STREAM CROSSING PER VESCH 31�' 4 (r OPEN SPACE EASEMENT SCALE
1 —ifich = 50 ft.— — / TS TEMPORARY SEEDING PER VESCH 3.31 1 "=50
PS PERMANENT SEEDING PER VESCH 3.32
TP TREE PROTECTION TAPE PER VESCH 3.38 SHEET NO.
DUST CONTROL PER VESCH 3.39 8
LEGEND LEGEND — 4=0_ — — _ — -- — TH 0F�
SAF SAFETY FENCE PER VESCH 3.01 LIMITS OF LAND DISTURBANCE
CE CONSTRUCTION ENTRANCE PER VESCH 3.02 - _ — Z
t 4 DIVERSION DIKE w� / �_ -430
CRS CONSTRUCTION ROAD STABILIZATION VESCH 3.03 BOUNDARY LINE / - - _---- \ COTT R. LLINS
r u _ i - OS
- "— U Lic. No. 0357911n
SF SUPER SILT FENCE PER VESCH 3.05 "— SILT FENCE
f DIRECTION OF FLOW - -- 440 \ n ` 0 2 tv
A � 9/28/2
IP INLET PROTECTION PER VESCH 3.07 = _ - i = ' 0 n 6>
—653.75— PROPOSED CONTOUR S S co N ASS gGt
CIP CULVERT INLET PROTECTION VESCH 3.08 S �� 3 / - - _ _ \ , - _ - a ZONAL E
DRAINAGE DIVIDE S PRO 9 a
JEC \ BOUNDARY(TYP. d
DD DIVERSION DIKE PER VESCH 3.09 - SOILS LINE -
W RIGHT OF WAY DIVERSION PER VESCH 3.11 - - - - WATER WAY -- --- -------- --- / _ _ --- - a
a
TREELINE------- — c
ST SEDIMENT TRAP PER VESCH 3.13 �- - -�-�-� / /�. TP N I L
/ __- \ PROPOSED LIMITS OF I' �Nna
SB SEDIMENT BASIN PER VESCH 3.14 PRESERVED SLOPES / - " DISTURBANCE (TYP.) �cwNc-�
6
OP OUTLET PROTECTION PER VESCH 3.18 MANAGED SLOPES / \ / I c9 tr
SC TEMPORARY VEHICULAR STREAM CROSSING PER VESCH 3.24 [- -` r SWM FOREST &
- - OPEN SPACE EASEMENTCo
- SAF - \
TS TEMPORARY SEEDING PER VESCH 3.31 \ "� z / -�F _ \ \\ \ I TP = x T
5F
pS PERMANENT SEEDING PER VESCH 3.32
/ 40000,
TP TREE PROTECTION TAPE PER VESCH 3.38 \ / \ \ \ \ x x 1 \�\ z O
x ao m
Oc DUST CONTROL PER VESCH 3.39 \ _ NOTE: THE TREE PROTECTION FENCING SHALL BED: \ i x
HE SILT FENCE INSTALLED
ELY ADJACENT o,
\ TTO THE TREE PROTECTION FENCING. I THE LIMITS OF x
/ PLACED ON THE LIMITS OF DISTURBANCE LINE, WITH 0 x SF m
w
DISTURBANCE LINE AND TREE PROTECTION FENCING s,° � O z
ARE OFFSET FOR GRAPHICAL DISPLAY PURPOSES. + _ " _ LIMITS OF TREE CLEARING (TYP.) 0 o z
-_.. - - - _ — , ti
V� A 71 _0�' _ ---_— e > 3
_
- >
s N H
w
617
-
- W
TP tiss - PHASE II D.A. TO SEDIMENTS
w0joo/ / — \ TRAP#3\.79\R\
�SF - A
SOO
I
LIMITS OF TREE CLEARING (TYP.)
PROPOSED LIMITS OF
w C
DISTURBANCE (TYP.) RAINAGE VIDE (TYP.) A \ ¢ N
rn
0
o o t. / DD
SAF / �� �� i' / / // / _-- � EXISTING MANAGED
z z / // / \STEEP SLOPES (TYP.) N
L
i�STz �� DC �' M
(h
I 1
/ x
LIMITS OFTREE CLEARING (TYP.) A
SF � PHASE II D.A. TO SEDIMENT
9° TRAP #2 = 2.16 ACRES I Z z
S°a PROPOSED LIMITS OF x x O Q
TP ° DISTURBANCE (TYP.) EXISTING PRESERVED 0')
Q
} DD s° STEEP SLOPES (TYP.) 'i W N
w ` > O
Lu
� � � / / � ' � SF � Ir 11 � � � J Z
°
1 SF
J
N I
't
/
I
TP I
t
I � O
NOTE: THE TREE PROTECTION FENCING SHALL BE ICI _
I l 1 1 I THE SILT FENCE INSTALLED IMMEDIATELY ADJACENT v
DD J I I I l I I Lu
\ ' I PLACED ON THE LIMITS OF DISTURBANCE LINE, WITH i
TO THE TREE PROTECTION FENCING. THE LIMITS OF W
DISTURBANCE LINE AND TREE PROTECTION FENCING \ O
' ARE OFFSET FOR GRAPHICAL DISPLAY PURPOSES. 1 � J
O / DD ( W LiJ
ci i o z U
� z
��°�
DD /
O
v
P
m
v
dd
} SF/ co LLI �
ul ! 11 w
t.J _
TP SF Lu w W
O
SF PROPOSED LIMITS OF w
NOTE: ALL DIVERSIONS SHALL BE 18" (MIN.) IN
DISTURBANCE (TYP.)
HEIGHT CONTRACTOR SHALL ENSURE POSITIVE
SLOPE IS MAINTAINED. BERMS SHALL BE `so I I o SuU J Q
/ M ATC H L I N E x szo STABILIZED AS A FIRST STEP IN DISTURBANCE. \ \ \\ � Ur
DD
� SEE SHEET 8 / \
0
N
°
PHASE II D.A. TO SEDIMENT IMITS OF TREE CLEARING (TYP. J
BASIN #3 = 4.62 ACRES EXISTING TREELINE (TYP.'
DRAINAGE DIVIDE (TYP. V�I SF 0 Lu
i
PROJECT BOUNDARY (TYP.) _ �� TS / � �PROI EDSTOCKPILEAREATOBE S , �� m Ln
e / � ENCOMPASSED BY SILT FENCE ATALL TIMES '� JOB No.
202198
GRAPHIC AL / / ° w9
PHASE II D.A. TO SEDIMENT
PROPOSED LIMITS OF I SCALE I
/ / / BASIN #1 = 10.77 ACRES /
° °
00 FLOW DIRECTION r - - --
° =s s g DISTURBANCE (TYP.) i ARROW (TYP.) / ° _ - - /
- D SAF
1 -50
SF D /
( IN FEET) � I � / EXISTIN�MANAGED � `� - � ,. / � � ,„ � � / � / � I ; , � ° SHEET No.
STEEP SLOPES (TYP.) g
inch = 50 ft.
_PROPOSED LIMITS OF
DISTURBANCE (TYP.) TH 0
'a SCOTT R. LLINS7
U Lic. No. 035791 a
`60 9/28/22
TP
LIMITS OF TREE CLEARING (TYP.) ZONAL E
SF s
n'
S
z
o
o Ln
a DO
rn
U V)
V)
z1�
CC o
i
1,
- , O,V'\ -7
'A
FLOW DIRECTION. li
ARROW (TYP.) OP
°
�fv v
$F V
v ;
/ `. 61 /
STREAM BUFFER
LOT -
�, w�
\ ° i HEIGHT CONTRACTOR SHALL ENSURE POSITIVE -
NOTE: ALL DIVERSIONS SHALL BE 18 IN (MIN.) % ' o
Yi
u \ u ' / / SLOPE IS MAINTAINED. BERMS SHALL BE u
A �"j/ PROJECT BOUNDARY (TYP.)
/ STABILIZED AS A FIRST STEP IN DISTURBANCE.
�" _ _ , � LOT
EXISTING ioo-YEAR FLOODPLAIN (TYP.)
LOT51 �> / i
�x xXA,/\"'X`\1-" 1�
PROPOSED LIMITS OF w /
/� �:� P DISTURBANCE ( YP.) `
/ SF
,Fg$ `EXISTING PRESERVED /
STEEP SLOPES (TYP.)
LOT 3
f
F
O i LOT ; u / ; /
IMITS O TREE CLEARING (TYP.)�
So LOC x 54
- � ATION OF i CY � -
5 DIJMPSTER
4001
EEP, 2'WIDE EARTHEN BERM WITH A HEAVY MIL POLYETHYLENE LINING, OR BE
PBACED IYA DN AN IMPERVIOUS OPEN TOP DUMPSTER. THE PROPOSED BERM OR DUMPST ER,
_ LOCATION OF FUELING AREA. THE FUELING TANK SHALL BE COMPLETELY SURROUNDED
SHALL CONTAIN FUEL IN THE EVENT OF A SPILL CONTRACTOR SHALL ENSURE VOLUME \
CAPACITY IS io% LARGER THAN THE MAXIMUM VOLUME OF STORED FUEL
��
do NOTE:
THE N LIMITSEC FI DISTURBANCEDECI LINE, WITH
DC , ,
/ C O THEO
/ 470 'THE SILT FENCE INSTALLED IMMEDIATELY ADJACENT /
DRAINAGE DIVIDE (TYP.) p / �o i V A TO THE TREE PROTECTION FENCING. THE LIMITS OF
�� DISTURBANCE LINE AND TREE PROTECTION FENCING d��
LOCATION OF PORTA-POTTIES
I ARE OFFSET FOR GRAPHICAL DISPLAY PURPOSES. 6
IP X
SF PROPOSED TEMPORARY PIPE OUTFALL Ip F
1992 3.07 1992 3.07
1 DWACF ITT r1 A T11 CFr1TMFMT
I
�
SILT FENCE DROP INLET
PROTECTION
2 X 4' VDOD FRAME
DRDP INLET
1� X.
3' MIN.
II II
LI II
V V
PERSPECTIVE VIEWS
ELEVATION OF STAKE AND
FABRIC ORIENTATION
SPECIFIC APPLICATION
THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE THE
INLET DRAINS A RELATIVELY FIAT AREA SLOPE NO GREATER
THAN 5%) WHERE THE INLET SHEET OR OVERLAND FLOWS (NOT
EXCEEDING 1 C.F.S.) ARE TYPICAL. THE METHOD SHALL NOT
APPLY TO INLETS RECEIVING CONCENTRATED FLOWS, SUCH AS
IN STREET OR HIGHWAY MEDIANS.
Source: N.C. Erosion and Sediment Control
Planning and Design Manual, 1988
DETAIL A
�NT 7
GRAVEL CURB INLET SEDIMENT
FIL TER
GRAVEL FILTER 127
RUNOFF WATER WIRE MESH
FILTERED WATER
n
SEDIMENT v >A
CONCRETE GUTTER 12"
CURB INLET
SPECIFIC APPLICATION
THIS METHOD OF INLET PROTECTION IS APPLICABLE AT CURB INLETS
WHERE PONDING IN FRONT OF THE STRUCTURE IS NOT LIKELY TO CAUSE
INCONVENIENCE OR DAMAGE TO ADJACENT STRUCTURES AND UNPROTECTED
AREAS.
* GRAVEL SHALL BE VDOT #3, #357 OR 5 COARSE AGGREGATE.
Plate 3.07-1 Source: Va. DSWC
Plate 3.07-6
7
w0 IP
D w \
DD
ING
1 }
` I
\ IT REELWE(TYP��
PROPOSED TEMPORARY PIPE OUTFALL
0/
IF' PHASE III D.A. TO SEDIMENT5 / /
p BASIN #1 = 19.85 ACRES
�IV
i
PROPOSED TEMPORARY PIPE OUTF LL
X � O
1 /
IP
BE
TP
will " VFW
o 'low ♦�®R
ei
IL OF
SF IP i
r, CIP / i LEGEND LEGEND
w
SAFETY FENCE PER VESCH 3.01 LIMITS OF LAND DISTURBANCE
CONSTRUCTION ENTRANCE PER VESCH 3.02 4 44 DIVERSION DIKE
CONSTRUCTION ROAD STABILIZATION VESCH 3.03 BOUNDARY LINE
Z -'� � � � 46� / / /� SF SUPER SILT FENCE PER VESCH 3.05 SILTFENCE
DIRECTION OF FLOW
/ u
/ / " IP INLET PROTECTION PER VESCH 3.07
�o� � � / / / / ;—653.75— PROPOSED CONTOUR
452 - CIP CULVERT INLET PROTECTION VESCH 3.08
m m m m m DRAINAGE DIVIDE
DD DIVERSION DIKE PER VESCH 3.09 SOILS LINE
W RIGHT OF WAY DIVERSION PER VESCH 3.11 WATER WAY
l x�J TREELINE
1 i — /NP _
/ 171 GALE ST SEDIMENT TRAP PER VESCH 3.13
SB SEDIMENT BASIN PER VESCH 3.14 PRESERVED SLOPES
� / OP OUTLET PROTECTION PER VESCH 3.18 ZZ.' MANAGED SLOPES
v —
/ d /� / ( IN FEET--)- SC SWM FOREST &
TEMPORARY VEHICULAR STREAM CROSSING PER VESCH 3.24 I -- OPEN SPACE EASEMENT
i L
'\ / 1 -ice h = 50 ft. TS TEMPORARY SEEDING PER VESCH 3.31
ST
PS PERMANENT SEEDING PER VESCH 3.32
�. TP TREE PROTECTION TAPE PER VESCH 3.38
DUST CONTROL PER VESCH 3.39
I
N
H 00
¢ m
� N
ti
M
c+5
CD
N
r_ M
N z CQ
�
N .J �
N � J
W >
w
J V l Z
> > O
z
O
Q � —
2 w LLJ
U
p 06
O
LLI —
~ ct� 0
Ct) w I
W � LJJ
zz
� Q Q
C
H
J w
J� Q
C]
O O
LU
w
d Ln
JOB NO.
202198
SCALE
1 "=50'
SHEET NO.
10
i
LEGEND LEGEND
SAF SAFETY FENCE PER VESCH 3.01 LIMITS OF LAND DISTURBANCE
CE CONSTRUCTION ENTRANCE PER VESCH 3.02 4 4 4 DIVERSION DIKE
CRS CONSTRUCTION ROAD STABILIZATION VESCH 3.03 BOUNDARY LINE
SF SUPER SILT FENCE PER VESCH 3.05 ' — SILT FENCE
IP INLET PROTECTION PER VESCH 3.07 f DIRECTION OF FLOW
—653.75— PROPOSED CONTOUR
CIP CULVERT INLET PROTECTION VESCH 3.08 DRAINAGE DIVIDE
DD DIVERSION DIKE PER VESCH 3.09 — SOILS LINE
W RIGHT OF WAY DIVERSION PER VESCH 3.11 — — — — WATER WAY
`_�_�_�_�_� TREELINE
ST SEDIMENT TRAP PER VESCH 3.13
SB SEDIMENT BASIN PER VESCH 3.14 PRESERVED SLOPES
OP OUTLET PROTECTION PER VESCH 3.18 {; i ..• 3'. ,-I MANAGED SLOPES
SC TEMPORARY VEHICULAR STREAM CROSSING PER VESCH 3.24 [- SWM FOREST &
— — OPEN SPACE EASEMENT
TS TEMPORARY SEEDING PER VESCH 3.31
pS PERMANENT SEEDING PER VESCH 3.32
TP TREE PROTECTION TAPE PER VESCH 3.38
DC DUST CONTROL PER VESCH 3.39
0
00 1 vim.
�6' (i
LIMITS OF PHASE
LIMITS OF PHASE I
bi48_ I J
1
� I
II
—420 5 ^^jjTH 0F�
5 / / ti° t SCOTT R. LLINSZ
�- 1- -- \ \ OU Lic. No. 0357911n
9/28/22
_S S '— S S — S / / �pg \ o / ' /�� �� -_ I ®® ®� PROJECT BOUNDARY \ a a N OSIONAL E��S
° - DARY (TYP. `Q
- O
co
- a
Lo
TP �PROPOSED LIMITS OF
DISTURBANCE (TYP.) way
— — i cc
DC 0
\ \ p5 - U)
NOTE: THH�R�PROTECTION FENCING SHALL BE)
_ A \ \\\
NOTE:a o_ m
\ / PLACED ON THE LIMITS OF DISTURBANCE LINE, WITH
CO
THE SILT FENCE INSTALLED IMMEDIATELY ADJACENT -� �� o OT I� \ m \� x SF N \ V/ N V)
TO THE TREE PROTECTION FENCING. THE LIMITS OF = ; '" LOT z4 i� \• } P I' \ \ Z o UU))
DISTURBANCE
FENCING
ARE OFFSET OR GRAPHICAL DISPLAY ON
PURPOSES.- \ ' s o I LIMITS OF TREE CLEARING (TYP.)O z
w r o
A
i i \
w a
H
(P
i A _LOT - — ' woo
ui
I 1 \
A LIMITS OF TREE CLEARING (TYP.) / / S \\( \
y - LO 3I
i
/ VPROPOSED LIMITS OF w N
DISTURBANCE (TYP.)rN
m
�/ \ \ x - _ x +� / �� / , \- /' /M 9 • • ..• \ NG MANAGED
STEEP IISLOPES (TYP.) l / y \ I
DRAINAGE DIVIDE (TYP(T _ \
° V A i / i V LOT 24
iL9
CM
9
IP l
I
PS II M
\
/ P/ — LIMITSOFTREECLEARING TYP.
I I LOT 4 / s"� ( ) i
SF i
I
/
LL
z
� � N
z
PROPOSED LIMITS OF x x \ O
TP 0
�' �� ti \ /� DISTURBANCE (TYP.) EXISTING PRESERVED J
'SLOPES (TYP.) N
m / 5° P I P
/ I / � J
/ IP �' Q > O
IP � �� I � I '� � .. �
/ / �i / w 'r
�I TP
Z
�a Fr _ (� O
i F IP �� �� LOT2g / s r/ SF >
NOTE: THE TREE PROTECTION FENCING SHALL BE
PLACED ON THE LIMITS OF DISTURBANCE LINE, WITH ®: Lu 1
0
THE SILT FENCE INSTALLED IMMEDIATELY ADJACENT I— Z
TO THE TREE PROTECTION FENCING. THE LIMITS OF (— >� W
DISTURBANCE LINE AND TREE PROTECTION FENCING \ L9Q
AR PURPOSES. i
/ \ 3 E OFFSET FOR GRAPHICAL DISPLAY
/ 0
= w Lu
w\ U
Lu LD
w s
i
I
q i
�� oC O
/ C0 Lu
-� SF ;m I � `_-- _I /IP x I I _ I I � I 11 r - � /� / � LJJ
LOTS 1 / PA/ P� sF / w Z w
p� go / _ �o LOT-3 ----
� lJl
LOTS - o _ _ / F Q
I
i
s
I-
LOTio" LOT
54 — �� IP SF PROPOSED �� Lu
+ so IP NOTE: ALL DIVERSIONS SHALL BE 18" (MIN.) IN T LIMITS DISTURBANCE (TYP.).)
Q
o /COT 40 A IP , HEIGHT CONTRACTOR SHALL ENSURE POSITIVE � z
SLOPE IS MAINTAINED. BERMS SHALL BE �o �V /� oO Q / STABILIZED AS A FIRST STEP IN DISTURBANCE. L T
, j
ATCHLINE
o
f O
/ EE SHEET so !? ` �� �� N
1 ` TP
�'' LIMITS OF TREE CLEARING (TYP.
A. / A F
_ �� EXISTING TREELINE (TYPD w
\ 4 i p w
s PRO POSED STOCKPILE AREA TO BE PROPOSED TEMPORARY PIPE OUTFACE
ti LOT4i� �i SF S a
PROJECT BOUNDARY (TYP) b
_ " _ / / �� JOB NO.
� \ AENCOMPASSED BY SILT FENCE AT ALL TIMES / � ,f� � �:
/ � DRA NAGE DIVIDE (TYP.) / / / 202198
/ \
GRAPHIC AL � � �� � w � S >. I ,
J _ m ^d N SCALE
PROPOSED LIMITS OF / / / LOT 8 a 1P — / IP /PHASE III D.A. TO SEDIMENT % / / Z I /
" =s s g °° DISTURBANCE (TYP.)' J / BASIN #1 = 19.85 ACRES 1 =50'
\ SAF
SF �� i l �� 5 / SHEET NO.
( IN FEET) ' J \ EXISTING MANAGED _ ® /
' �� STEEP SLOPES (TYP.) /� P�OPOSED TEMPORARY PIPE OUTFACE 11
inch = 50 ft. DC l - / OT 48 / / / / i E
SEDIMENTBASIN #1 DEfAIL
SCALE �1"=20'
� �71
I
+
PROPOSED SAFETY FENCE,
INSTALL SIGNS "WARNING\
\ QUICK SAND, KEEP OUT"
�2 PROPOSED 30' WIDE GRASS LINED
EMERGENCY SPILLWAY CREST ELEV.=431.00'
I -11 I I1 I i-
- II -III III,
\ I
TO VENT FLOTATION T\E RISER BASE
PROPOSED BAFFLES u'" SHALL BE FIRMLY EMBEDDED 6" INTO AN 18"
N THICK REINFORCED CONCRETE FOUNDATION
^ r THAT IS 8'x8', AND BURIED BELOW GROUND.
1 , �
/ I x PROPOSED 48" RCP RISER
RIM=430.00
/ PROPOSED 30" HOPE BARREL
INV. IN=422.00, INV. OUT=421.33
L=31.67', S=2.12%
ST
x
0 yti
i
�Ary ti 8•
/ TIE PROPOSED BARREL ! /
INTO SWM STR. A4 /
v ,
OUTFALL SYSTEM TO BED
x : - INSTALLED PER SWM PLAN
X
i
� � X
PROPOSED VDOT STD. ES-1
+ / M. A2400
I /
I / / PROPOSED FLAT VDOT CLAS I, EC-i RIPRAP OUTLET
PROTECTION w/ GEOTEXTILE FILTER FABRIC UNDERLAYMENT
/ I j (OP L=39', W1=7.5', W2=25', D=i8" ). FABRIC TO BE KEYED INTO
EX. GROUND 9" MIN. AT ENDS & ALONG PERIMETER. FABRIC,--.,
TO OVERLAP A MIN. OF 9"
Sediment Basin Design 7
MIN.1'WISPILLWAY
2' WITHOUT
CREST OF EMERGENCY
SPILLWAY
drainage area (acres)
1985.
DESIGN HIGH WATER
basin volumes: (using 2' contour intervals)
(25-YR. STORM ELEV.)
elevation (ft) contour area (sf)
vOlume(cy)
G.S'
MN 10'
422.00 6070.0
0
DRY STORAGE
RISER CREST
DEWATERING
424.00 7443.0
500
DEVICE
426.00 8917.0
1,105
WE soRACE
428.00 10492.0
1,823
430.00 12167.0
2 661
SEDIMENT CLEANOUT POINT
WE STORAGEREDUCED
>
TO G. C.Y./ ACRE)
)
432.00 13943.0
3,628
wet storage:
wet storage required (cy) (67*DA)
1330
design high water
431.00
dewatering orifice elevation (ft)
426.63
top of dam (ft)
432.00
wet storage provided at this elevation (cy)
1330
top width of dam (ft)
8.0
available volume before cleanout (cy) (34*DA)
675
bottom of basin (ft)
422.0
cleanout elevation (ft)
424.55
approx. bottom dimensions:
6ZK125'
distance from cleanout to orifice (ft) (> 1')
2.1
upstream face slope:
2:1
downstream face slope:
2.5:1
dry storage:
dry storage required (cy) (67*DA)
1330
baffles:
YES
principle spillway crest (ft)
430.00
length of flow, L (ft)
110
dry storage provided at this elevation (cy)
1330
effective width, We (ft)
104
diameter of dewatering orifice (in)
7.0
L / We (baffles required if < 2)
1.1
diameter of flexible tubing (in) (orifice+2')
9.0
collars:
YES
runoff
depth of water at spillway crest (ft)
8
C (use 0.45 for bare earth)
0.5
slope of upstream face (Z1)
2:1
tc (min)
12
slope of barrel (Sb)
2.12%
12yr 3.9 Q 2yr
38.7
length of barrel in saturated zone (Ls)
52.44
1 25yr 6.5 Q 25yr
71.0
number collars required
3
dimension of collars
4.7'x4.7'
principle spillway:
available head (ft)
1.00
emergency spillway:
YES
diameter riser (in)
48
required capacity (Q254p) (cfs)
32.3
spillway capacity, Qp (cfs)
38.7
bottom width (ft)
30
diameter trash rack (in)
72
slope of exist channel (ft/ft)
20%
barrel length (ft)
31.67
minimun length of exit channel (ft)
19
head on barrel through embankment (ft)
69.0
crest of spillway (ft)
431
diameter of barrel (in)
30
GRAPHIC SCALE
"0 0 i0 z0 40
( IN FEET )
1 inch = 20 ft.
SEDIMENT BASIN #2 DETAIL
SCALE 1 rr=20'
1
Lic. No. 035791 a
9/28/22��
��SIONAL E�O�
+ O
/ a �
ROPOSED SAFETY FENCE, / U) u=i
/ INSTALL SIGNS "WARNING w V)
QUICK SAND, KEEP OUT" z =
vh° PROPOSED BAFFLES o z
/ o O
F � W s
�o
/// / �A- � W�/
/ PROPO ED 24 CID R SER / - LU
/ RIM=43 .00
PREVENT FL0 N THE RISER BASE
HALL BE FIRMLY EMBEDDED 6" INTO AN 18"
THICK REINFORCED CONCRETE FOUNDATION
THAT IS 5'x5' AND BURIED BELOW GROUND.
i
PROPOSED 18 HOPE BARREL ry
INV. IN=426.50, INV. OUT=426.00 LU C
/ L=30', 00
S=1.67%O o
'e / � PROPOSED VDOT STD. EW-1
I
1992 3.14
EXAMPLE PLAN VIEWS OF
BAFFLE LOCATIONS IN
SEDIMENT BASINS
D
D 2 NO SCALE
INFLOW
RISER
` D/2
NORMAL POOL THE POINT OF INFLOW
L = TOTAL DISTANCE FROM
AROUND THE BAFFLE TO
THE RISER.
NORMAL POOL
C`\ D/2 L RISER
° - eAri'Le I
NURM
SHEETS OF 4' X 8' X 1/2' EXTERIOR 8-
PLYWOOD OR EQUIVALENT
RISER CREST ELEVATION
POSTS MIN. SIZE 47 SQUARE
OR T ROUND. SET AT
II LEAST 3' INTO THE GROUND.
�LJI e'
Source: USDA-SCS Plate 3.14-6
=ME=
o + PROPOSED VDOT STD. EC-1, CLASS AI RIPRAP LINED OUTLET ti
/ 1 3ti PROTECTION WITH FILTER FABRIC UNDERLAYMENT (L=10', W1=4.5', M
W2=11.5', D=18"). FILTER FABRIC SHALL BE KEYED INTO THE vb� � EXISTING GROUND AT A MINIMUM OF 9" AT THE END & ALONG THE N
o PERIMETER. EDGES OF FABRIC SHALL OVERLAP A MIN. OF 9".
co
III
Ln
W N
Lu
PROPOSED 20' WIDE GRASS LINED f ; Q
/ EMERGENCY SPILLWAY CREST ELEV.=431.00' / W Lu z
Z J v,
Sediment Basin Design 2
o + PROPOSED VDOT STD. EC-1, CLASS AI RIPRAP LINED OUTLET ti
/ 1 3ti PROTECTION WITH FILTER FABRIC UNDERLAYMENT (L=10', W1=4.5', M
W2=11.5', D=18"). FILTER FABRIC SHALL BE KEYED INTO THE vb� � EXISTING GROUND AT A MINIMUM OF 9" AT THE END & ALONG THE N
o PERIMETER. EDGES OF FABRIC SHALL OVERLAP A MIN. OF 9".
co
III
Ln
W N
Lu
PROPOSED 20' WIDE GRASS LINED f ; Q
/ EMERGENCY SPILLWAY CREST ELEV.=431.00' / W Lu z
Z J v,
Sediment Basin Design 2
MIN. T WI SPILLWAY
2' WITHOUT
CREST OF EMERGENCY
SPILLWAY
drainage area (acres)
5.97
DESIGN HIGH WATER
basin volumes: (using 2' contour intervals)
zs-YR. STORM ELEV.)
elevation (ft) contour area (sf)
volume(cy)
D.S.
MN. 1.0'
426.50 6085.0
0
_.
DRY STORAGE
RISER CREST
DEWATEMNG
428.00 7407.0
374
oEucE
430.00 9258.0
990
• WET STORAGE
432.00 11210.0
1,747
SEDIMENT CLEANOLR POINT
(•TWET STORAGE EDUCED
O G- p
wet storage:
wet storage required (cy) (67*DA)
400
design high water
431.00
dewatering orifice elevation (ft)
428.33
top of dam (ft)
432.00
wet storage provided at this elevation (cy)
476
top width of dam (ft)
8.0
available volume before cleanout (cy) (34*DA)
203
bottom of basin (ft)
426.5
cleanout elevation (ft)
427.30
approx. bottom dimensions:
435K181'
distance from cleanout to orifice (ft) (> V)
1.0
upstream face slope:
2:1
downstream face slope:
2.5:1
dry storage:
dry storage required (cy) (67*DA)
400
baffles:
YES
principle spillway crest (ft)
430.00
length of flow, L (ft)
59
dry storage provided at this elevation (cy)
513
effective width, We (ft)
157
diameter of dewatering orifice (in)
5.0
L / We (baffles required if < 2)
0A
diameter of flexible tubing (in) (orifice+2")
7.0
collars:
YES
runoff.
depth of water at spillway crest (ft)
3.5
C (use 0.45 for bare earth)
0.45
slope of upstream face (Z1)
2:1
tc (min)
10
slope of barrel (Sb)
1.67%
12yr 4.2 Q 2yr
11.3
length of barrel in saturated zone (Ls)
22.5
1 25yr 6.9 Q 25yr
20.4
number collars required
2
dimension of collars
3.1'x3.1'
principle spillway:
available head (ft)
1.00
emergency spillway:
YES
diameter riser (in)
24
required capacity (Q25-Qp) (cfs)
9.1
spillway capacity, Qp (cfs)
11.3
bottom width (ft)
20
diameter trash rack (in)
36
slope of exist channel (tuft)
20%
barrel length (ft)
30
minimun length of exit channel (ft)
16
head on barrel through embankment (ft)
5.0
crest of spillway (ft)
431
diameter of barrel (in)
18
_J
W 0
0 r .
L9 'iO ~
z
0� pC 0
Z = w ".
U is ~
Z
W Y �_
Wes// Q
LLJ
~ LL ()
co LUUl
r'''J� 2
V Z
z LU
w z 0
U)
cjC 0
V L1J
J w
J� Q
O O
CD
Lu
w
w
d In
JOB NO.
202198
SCALE
111=20'
SHEET NO.
12
SCALE 1 11=20'
PROPOSED SAFETY FENCE,
INSTALL SIGNS "WARNING.
QUICK SAND, KEEP OUT" _a'
0
0
C / �
\V PROPOSED 16.7'x23'
\ RIPRAP LINED SPILLWAY
BOTTOM ELEV.=458.50,
TOP ELEV.=4@1.00
Sediment Trap #3 Design
drainage area (acres) (<3)
2.79
i
trap volumes:
GucDwL CREST OF STONE WEIR
,AJAMILE
elevation (ft) area (so volume(cf)
volume(cy)
455.00 1254.0 0
0.0
y
N•
-
456.00 1416.0 1,334
49.4
DRY STORAGE -
,.
vARLAeLc
458.00 1764.0 4,508
167.0
460.00 2450.0 8,703
322.3
462.00 3354.0 14,483
536.4
WET STORAGE
11A% 1
(IXC` V rEO)
CLOTH IXdGINAL
OfNRI"o
`FLIER
CLEV
(1
wet storage:•ME
%ATE 3.13-1
COARSE AGGREWTE� CUSS I RIPRAP
wet storage required (cy) (67*DA)
186.9
bottom of stone weir (ft)
458.50
wet storage provided at this elevation (cy)
205.4
slope of wet storage sides
1:1
weir length (ft) (6xDA)
16.7
dry storage:
bottom of trap elevation (ft)
455
dry storage required (cy) (67*DA)
186.9
bottom trap dimensions:
22'x5T
crest of stone weir
461.0
top of dam elevation (ft)
462
dry storage provided at this elevation (cy)
223.9
top width of dam (ft)
4.5'
slope of dry storage sides
2-1
top trap dimensions
43'x78'
GRAPHIC SCALE
0 0 o z0 40
( IN FEET )
1 inch = 20 ft.
IN
SCALE 1 "=20'1
#1
PROPOSED SAFETY FENCE,
INSTALL SIGNS "WARNING--/k _
\ QUICK SAND, KEEP OUT
PROPOSED 8 9'x28'
RIPRAP LINED SPILLWAY
V BOTTOM ELEV.=425.50,
TOP ELEV.=428.00
/�
Sediment Trap #1 Design
drainage area (acres) (<3)
1.48
11
1 YARIAII
trap volumes:
CREST OF STONE WEIR
ppygp•
elevation (ft) area (so volume(cf)
volume(cy)
'ROUND
422.00 561.0 0
0.0
`LEv. a
°
424.00 765.0 1,321
48.9
DRY STORAGE -
N
vARPac
426.00 1058.0 3,136
116.1
"
428.00 1613.0 5,787
214.3
429.00 1929.0 7,556
279.9
WET STORAGE
s• HAIL
fIXGwTEO)
BIER CLOTH CL NWN
ELEY
ELEV.
wet storage:
-SEE PLATE 3.13-1
COARSE AGGREGATE- CIA55 I RIP P
wet storage required (cy) (67*DA)
992
bottom of stone weir (ft)
4255
wet storage provided at this elevation (cy)
992
slope of wet storage sides
1:1
weir length (ft) (6xDA)
8.9
dry storage:
bottom of trap elevation (ft)
422
dry storage required (cy) (67*DA)
99.2
bottom trap dimensions:
23`x26'
crest of stone weir
428.0
top of dam elevation (ft)
429
dry storage provided at this elevation (cy)
115.1
top width of dam (ft)
4.5
slope of dry storage sides
21
top trap dimensions
445c49'
SEDIMENT /TRAP #2 DETAIL
SCALE 1 11=20'
PROPOSED 12.4'x27' /
RIPRAP LINED SPILLWAY
BOTTOM ELEV.=472.50,
TOP ELEV.=475
\,Xo
V
i
PROPOSED SAFETY FENCE,/
/ INSTALL SIGNS "WARNING
QUICK SAND, KEEP OUT" /
C5
Sediment Trap #2 Design
drainage area (acres) (<3)
2.99
trap volumes:
ORIGINAL CREST OF STONE WEIR
vERAaE
elevation (ft) area (so volume(cf)
volume(cy)
GROUND \
469.00 1254.0 0
0.0
E r
470.00 1416.0 1,334
49.4
DRY STORAGE
r
vARALE
472.00 1764.0 4,508
167.0
N
474.00 2450.0 8,703
322.3
476.00 3354.0 14,483
536.4
WET STORAGE
.• MAX.
(IXGMTFD)
FILTER CLOTH ORIGINAL
GROUND
_y
ttn.
1
wet storage:
,SEE PLATE 3.1}t
SE
CCARAGCREWTE'• CLASS I RIPRAP
wet storage required (cy) (67*DA)
200.3
bottom of stone weir (ft)
472.50
wet storage provided at this elevation (cy)
205.9
slope of wet storage sides
1:1
weir length (ft) (6xDA)
17.9
dry storage:
bottom of trap elevation (ft)
469
dry storage required (cy) (67*DA)
2003.
bottom trap dimensions:
22k57'
crest of stone weir
475.0
top of dam elevation (ft)
476
dry storage provided at this elevation (cy)
223.5
top width of dam (ft)
4.5'
slope of dry storage sides
2-1
top trap dimensions
435(78'
SEDIMENT BASIN #3 DETAIL rr= ° TH o
SCALE 1 20r
° �,
ScOTT R. LLINS'Z
L� Lic. No. 035791 a
`00 9/213/22 ��'
��70NAL E��'l
\ PROPOSED VOID STD. EC-1, CLA A RIPRAP LINED 0 LET
PROTECTION WITH FILTER FABRIC UNDERLAYMENT (L=10', /
-/W1=3.75% W2=11.25', D=18"). FILTER FABRIC SHALL BE KEYED INTO
THE EXISTING GROUND AT A MINIMUM OF 9" AT THE END & ALONG
THE PERIMETER. ED E OF FABRIC SHALL OVERLAP A M N. OF
N�/ PROPOSED SAFETY FENCE,
INSTALL SIGNS "WARNING
QUICK SAND, KEEP OUT"
0 REVE T FLOTATION THE RISER BASE zo
SHALL BE FIRMLY EMBEDDED 6" INTO AN 18" p In
THICK REINFORCED CONCRETE FOUNDATION
THAT IS 4'x4', AND BURIED BELOW GROUND. 13� M
U Ln
Cn
O o z
/ X PRO OS D 24" RCP RISER > g
a
RIM=484.00 L a
In
/201/ LLI
Ce
IIIIIIIIIIIIII 17 � /
PROPOSED VDOT STD. ES-1 III 35- I w r-4
00
PROPOSED 15" HD OPOSED BAFFLES BARREL � '
INV. IN=479.00, INV. OUT=476.00 /
L=54.67', S-5.49% 1
/ V
I
PROPOSED 20' WIDE GRASS LINED
EMERGENCY SPILLWAY CREST ELEV.=485.00'L9
vJ CM
CD
00
/ / N
r
N z cn
/ O -1
IN Q
�Q W
/ i I w Q z
/ J Q
(n i
Sediment Basin Design 3
drainage area (acres)
4.62
basin volumes: (using 2' contour intervals)
elevation (ft) contour
area (so
volume(cy)
479.00
2318.0
0
480.00
2825.0
95
482.00
3913.0
344
484.00
5102.0
676
486.00
6392.0
1,101
wet storage:
wet storage required (cy) (67*DA)
dewatering orifice elevation (ft)
wet storage provided at this elevation (cy)
available volume before cleanout (cy) (34*DA)
cleanout elevation (ft)
distance from cleanout to orifice (ft) (> 1')
dry storage:
dry storage required (cy) (67*DA)
principle spillway crest (ft)
dry storage provided at this elevation (cy)
diameter of dewatering orifice (in)
diameter of flexible tubing (in) (orifice+7)
runoff.
C (use 0.45 for bare earth)
tc (min)
12yr 4.3 Q 2yr
125yr 7.1 Q 25yr
principle spillway:
available head (ft)
diameter riser (in)
spillway capacity, Qp (cfs)
diameter trash rack (in)
barrel length (ft)
head on barrel through embankment (ft)
diameter of barrel (in)
310
481.75
312
157
480.48
1.3
310
484.00
364
40
&0
0.45
9
8.9
16.2
1.00
24
8.9
36
54.67
9.0
15
DESIGN HIGH WATER
(25-YR. STORM ELEV.)
3.5
MIN 1 O'
DRY ' STORAGE
WET • STORAGE
1
SEDIMENT CLEANWT POINT
(• TWE O ]- STORAGEpREDUCED
MIN. 1' WI SPILLWAY CREST OF EMERGENCY
2'WITHOUT SPILLWAY
RISER CREST
DEWATERIND
DENCE
design high water
485.00
top of dam (ft)
486.00
top width of dam (ft)
10.0
bottom of basin (ft)
479.0
approx. bottom dimensions:
35'x111'
upstream face slope:
2:1
downstream face slope:
2.51
baffles:
YES
length of flow, L (ft)
59
effective width, We (ft)
86
L / We (baffles required if < 2)
0.7
collars:
YES
depth of water at spillway crest (ft)
5
slope of upstream face (Z1)
2:1
slope of barrel (Sb)
5.49%
length of barrel in saturated zone (Ls)
38.44
number collars required
2
dimension of collars
3.9'x3.9'
emergency spillway:
YES
required capacity (Q25-Qp) (cfs)
7.3
bottom width (ft)
20
slope of exist channel (ft/ft)
25%
minimun length of exit channel (ft)
18
crest of spillway (ft)
485
/ J
W 0 .
L9 O Z
Z
0� pC O
=< Z W V .
U a ~
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W Y �_
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ZW V Z z o
Q U)
Wr��1r�� 0
LJ W
J w
JQ
O O
CD
N
Lu
w
w
a In
JOB NO.
202198
SCALE
111=20'
SHEET NO.
13
Drainage Area Summary
MATCHLINE, \
�S'v G , PROPERTY i- °�a SEE SHEET 15 \ F�000PLRAIN,
STREAM LIMN LIMITS, TYP. _. / A / _ - / - _ FLO
00 _COUNTY DEFINED - �`1�
PRESERVED STEEP-, A v
8nivgi
q MpCREEK �__ _ SLOPES, TYP. _ - - - - \ \� \ \ \ \ bd
-Boil / _ S �S`- S \ \ \\ \ \\ \
`\ \ 9a Total= 19.55 ac.
°�
�VOV___ S,
_
L` F, A
�
EXISTING
pl
EXISTING PIPE
OUTFALL TO
INTERMI
.�3° _ j_ - �- 1-- � _�- - --- --- --- \ \ -- -1 ` _- ,' � -_ - - -- - �\ STREAM �, • � -� \ �� \\ 3ii0 \---------REMAIN�\\�
-i
ti
1,- - ----- --- -- v A
10�0 STREAM
{yy
� 3 v A
- -_� �� - - -_ _--/ 3}�O / � _ \ \�V A \ \ \ \� BUFFER, TYP
i
- i ■ ELF w/ 1 \ \
-- _ �F
co
I
-- -
,% �/� �/ /, - - �W�fw♦���� 6/ s00OF CONIC. FLOW
INTERMITTENT- - - D ELEV.=88
_ STREAM - - -
�� � �
40
00
09
1 x
/ / /� / / / / / ��j i j� i _ _ _ - _ _ _ _ _ - i� ♦ A EXISTING PIPE
.' / / / � / � _ _._ ' ' � - - - ♦ � - � � ,A `�. A � � OUTFACE TO REMAIN
■ fit►
i i� . PRE DEV.--_ / ♦ '� \ ■ PRE-DEV. / I• \ \ \ \ \\
DA I
/ / / / e �yx i ---- - _ ♦ \DA 3 V A 2
♦FE
°°V A �' i �� A� EXISTING
_ A 5 -
o� I�' of oLF W f o_ � ♦ �_ � � _ � i _ �� v �� � �
0 1 / / / / / / / i ELEv_-3' ♦ ♦ �• �5 \ \ ♦ t< \ \�\ \ \
/ �43W OFCONIC.FLOW- /- _ v �a
�� / // // / /�// ////�% ■ w/DE'LEV=66' /-°����4#_ \ \\\\\V
/ / / / _ _ �_ ♦ v v A � \ \ V ♦ v � �` OY'
/ / / / / / // /� -- ♦ PRE-DEV. ♦ v vv v \ ���v v vV AA \ \ x vvVv �v v
/ / / / / / / / �� ♦ CA I v 41n _� v A \� V ° vn v v v0
// / / /// / ♦ /4# �e ■ V V A A V A w v v v vA v v v
DIRECT ON of
FLOW, TYP. �� i / / / / / / / /� / /
/ / / / / / // ■ -- --♦-- ♦ v PRE-DEV. v V A \ 1 ,-- ��� v v v� �x
♦ � DA 4 V A \ \ V A v v v v�
I
\ v / ♦ 7----- /- v♦ v v v\ \ v v v v v ��
+� ----
1 I � ■ 100' of oLF w \ \ -_ �`�� \ \ \ \\ '\� \\�\\\\
\ ELEV.=1'. A V A ♦ _ _- -EDE - v A V ,,'' A \ VA V
510' OF C614E FLOW __ A V Al PR - V. v A \ \ V A V � \ \ \
\ °A ` _ w/DELEV.86• _\\\VA A\ \ \V DAS ■�� A A.� AAv A \�A' V'�A.AA.\.A A vId
��_ \ ♦ ��
Is,
� � \ 4P#�*11 �� v v v v v v ` ` �� v y - ZNTERMiFFEPlT y1'i v v v y � . _ _ ♦ � � � � � � � � �I �� � -
PRE-DEV. � -� � STREAM ♦ w v\ A\� V v �\ i- - ♦ �•INTERMITTENT
STREAMDA 6 A#I
\ � ♦ � \ \
\ -
_
\ \ \OUTF
\ \ \ \ \ •� - • \ \ \ \ \ \ �. \ \ \ \ \ • EXISTING PIPE
o A \ \ v v A v ALL TO REMAIN
\ \ \ V A y 100'OFOLEw./o v ♦v v� v \ \
ELEV.-5"��
v v v 100' OF OLE w 0 A \
°°s \ � \ \ �� 100' OF CONC. FLOW, \ \ \ � 0ts \ � � \ � \ \ \ \ / .
\ \ ` - \ \ \ \ \ \ . \ \ \ i _ •. w/ A ELEV.=18', \ \ \ \ \ \ \ \ \ \ \ ELEV.-4', �� \
V A v v ./ v v v �v v \ v � 375' OF CONC. FLOW
VA A V v v / - �� 500' OF CHNL. FL0.�1 v v v v v _
co
���� \vv v � �� V vvvv vvv v 1 5'AOFL CHNL O FLOW
r
EF
411
FEE
\ \
\ \ \ \ \ \ \ • \ 1bo�OF OLD w/ A\ \ r \ I �', \ \ V � �S Z \ \\ \ \ \A�\V AV\ \ AV \A AA A\ \ �V•V •♦ ��vv\v �Vv \A v v v� v- /\,v( \ v\\ v \A\ A\Ew/ F - A .� •. I� / �' OF CITE w/\ . PRE-DEV.ECEV 5'
150' O GONG. FLOW . DA 7 550OF CONC. FLOW
A ELEV.�3' w/ DELEV.=94'
.. I
°S�V
SHEET FLOW RUNOFF TO BE
DEVELOPED INYHE
POST -DEVELOPMENT STATE
�
V A V A A V A A A v A �� �
v��v� v v vv v vv vv v°�sV
1010
WATERSHED SUMMARY #1 FOR CHANNEL & FLOOD PROTECTION COMPLIANCE
CUP
A v v v v v v V A \ v v v v V v v V Pre -Development
p
I I F \ \\ \ \ \\\ \�
°s v v v � - - - � v v A � - °zs / Area, Time of 1-year 2-year 10-year
CN
/ as Conc., hrs. Flow, cfs Flow, cfs Flow, cfs
DA 1 (Pre-Dev.) 57 1.55 0.21 0.45 0.85 2.44
/ / i ✓ V A v v v \ _ s -- DA 2 (Pre-Dev.) 58 2.55 0.31 0.33 1.17 0.02
DA 3 (Pre-Dev.) 57 1.49 0.13 0.34 1.11 3.18
•a DA 4 (Pre-Dev.) 57 3.24 0.17 0.70 1.31 6.70
J
COUNTY DEFINED
MANAGED STEEP DAS(Pre
-Dev.) 57 2.58 0.17 0.59 1.89 5.47
\\ \ \ / \ \
777
/ - v v \ v V 74 \ / �F SLOPES TYP. DA 6 (Pre-Dev.) 55 6.13 0.17 0.76 1.50 8.69
57 17.54 3.18 7.83 26.51
- --- ' ,^-� � _ ; v v vim° V � �rx�,�i�v�,r�?x
/ WATERSHED SUMMARY #2 FOR CHANNEL &FLOOD PROTECTION COMPLIANCE
gib RA SL
60 0 60 12� P
Pre-Develo ment
-
EXISTING
� _ A il v v- v A V A Area, Time of 1-year 2-year 10-year
/ - - DIRT PATH f �1� \ V. �Av\ \ V V '": ,,`� CN
° A P ��0� ac. Conc., hrs. Flow, cfs Flow, cfs FIoW, cfs
_ - \� �� A v _ _ - _ _( IN -FEE C) �5� DA 7 (Pre-Dev.) 59 2.01 0.19 0.39 1.29 3.51
/ �O�s v v \ V A 1 inch = 60 ft. - �G
0
SCOTT/R. C' �L INS'Z
LIC. No. 035791 n
p 1/28/22 �4
�t'Slnnrnr_ E�O���
L9 Cn
ti
zCIO
CYi
Cn
N
(y) z
Q
z
rn Q z
W N
N LU
W>LU
w
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Z J J
LU
LU
L9 O Q
z T_ a-�
I
p O
Y LL Ul
L
z
LU
Ul U) LU 2
v �
LU O
Z Lou� Q
U) LU
o
LU LU
Q O
O
N
U F_
U F
w w
a �
IOB NO.
202198
SCALE
1 "=60'
SHEET NO.
14
i v
_ A ram=
MATCHLINE sT� by LIMIT , LIMITS, rYP. / ry SEE THIS SHEET \ 9
6 T / / IPR RTY /' / o \ V v V A FLLOODPLAIN, S, PROPERTY/-
LIMITS
23,590 sf
CHANNEL AND FLOOD PROTECTION COMPLIANCE SUMMARIES
Drainage Area Summary
GRA IC S LE
WATERSHED SUMMARY #2 FOR CHANNEL & FLOOD PROTECTION COMPLIANCE
Post -Development
Pre-Dev.
Post-Dev.
Method of 9VAC25-870-66
Method of 9VAC25-870-66
Method of 9VAC25-870-66
Method of 9VAC25-870-66
6 c o so
/
izo
Concentrated
Subarea
Subarea
Channel Protection Compliance
Limits of Analysis for Channel
Flood Protection Compliance
Limits of Analysis for Flood Protection
Post -Development
N
Post -Development
Outfall
Protection
DA 1(Post-Dev.) 18.85 ac.
P �OI
Area, Time of 1-year 2-year 10-year
#1 (From UGD #1)
1-6
1
Section B.3.a (Energy Balance)
N/A (Energy Balance Satisfied)
DA 2 (Post-Dev.) 0.70 ac.
( IN- FEET)
(� q �OJ
CN ac. Conc., hrs. Flow, cfs Flow, cfs Flow, cfs
Total= 19.55 ac.
1 inch = 60 ft.
�P5
DA2(Post-Dev.)
90 0.70 0.10 0.05 1.65 3.50
Section C.2.a (Confines 10-yr Post-Dev. Flow)
Section C.3.c (Enters a Mapped Floodplain)
#2 (From UGD #2)
7
2
Section 6.3.a (Energy Balance)
N/A (Energy Balance Satisfied)
Section C.2.b (10-yr Post-Dev. Flow < 10-yr Pre-Dev. Flow)
N/A (Met with Section C.2.b)
JOB N0.
202198
SCALE
1 "=60'
SHEET N0.
15
STORMWATER MANAGEMENT NARRATIVE:
OVERVIEW
THIS PROJECT IS FOR THE DEVELOPMENT OF THE GRANGER PROPERTY. RESIDENTIAL LOTS AND
THEIR ASSOCIATED INFRASTRUCTURE ARE PROPOSED, AND STORMWATER TREATMENT IS
IMP
y 1 1 PROVIDED TO MITIGATE THE IMPACTS FROM THE PROPOSED IMPROVEMENTS. THE STORMWATER
MANAGEMENT PLAN COMPLIES WITH PART IIB SWM REQUIREMENTS.
WATER QUALITY SUMMARY
A \ \ THIS DEVELOPMENT REQUIRES THE REMOVAL OF 9.94 Ibs/yr OF PHOSPHOROUS. THIS
PHOSPHOROUS REMOVAL RATE IS MET THROUGH THE BEST MANAGEMENT PRACTICE OF
PURCHASING NUTRIENT CREDITS. PLEASE SEE THE ATTACHED STORMWATER MANAGEMENT
I
CALCULATIONS PACKET FOR ADDITIONAL DETAILS.
WATER QUANTITY SUMMARY
THE PROPOSED DEVELOPMENT CREATES TWO (2) CONCENTRATED OUTFALLS, AS SHOWN AND
0.76 ac. OF PROPOSED SWM FOREST / \ S \ \\° `\ II ` LABELED ON SHEET 15. THESE TWO (2) OUTFALLS ARE LABELED 'POST -DEVELOPMENT SITE
&OPEN SPACE EASEMENT AREA / OUTFALL #1' AND 'POST -DEVELOPMENT SITE OUTFALL #2'. BOTH CONCENTRATED OUTFALLS DRAIN
TO THE SAME POINT OF ANALYSIS, THE POINT WHERE THE STREAMS CONVERGE, AS SHOWN AND
LABELED ON SHEET 15. BOTH CONCENTRATED OUTFALLS WERE ALSO ANALYZED FOR CHANNEL &
\ ` 1 FLOOD PROTECTION INDEPENDENTLY.
/j / 1.03 ac. OF PROPOSED SWM FOREST ii. � � \ f' � `,A 4a
& OPEN SPACE EASEMENT AREA ��� .E>e� ° CHANNEL PROTECTION IS MET FOR SITE OUTFALLS #1 & #2 IN THE SAME MANNER, VIA 9 VAC
0.83 ac. OF PROPOSED SWM FOREST 25-870-66, SUBSECTION B.3.a ENERGY BALANCE). THE LIMITS OF ANALYSES FOR THESE SITE
&OPEN SPACE EASEMENT AREA OUTFALLS TERMINATE AT THE OUTFALLS SINCE SUBSECTION B.3.a IS SATISFIED.
/ / - ` - \� \ FLOOD PROTECTION IS MET FOR SITE OUTFALL #1 VIA 9 VAC 25-870-66, SUBSECTION C.2.a
�/ /�////� � � �� :: -✓'; ' / ,�/// /� // /:� _ - __ � \\ \\ \ \ \\ \ (CONFINES THE 10- r PEAK POST -DEVELOPMENT FLOW WITHIN THE UGD SYSTEM).THE LIMITS OF
\� Y
.: ANALYSIS FOR THE FLOOD PROTECTION ENDS AT SITE OUTFALL #1 SINCE THE RUNOFF
e ° //� �� SS
0.18 ac. OF PROPOSED SWM FOREST DISCHARGES INTO A MAPPED FLOODPLAIN (SUBSECTION C.3.c).
&OPEN SPACE EASEMENT AREA \
/ /� / �- `� � ,-}_ _ _ _ -_ ./.,F // : . l". , � \ \ � \.;• \�\\ \� � - � � � FLOOD PROTECTION IS MET FOR SITE OUTFACE #2 VIA 9 VAC 25-870-66, SUBSECTION C2.b (10-yr
PEAK POST -DEVELOPMENT FLOW < 10-yr PEAK PRE -DEVELOPMENT FLOW). THE LIMITS OF ANALYSIS
_ / �!�� �_ ':-- :; f.:.:' � � i '', \ \ \ \ \\ \\ \ \ \\ \\ � \ FOR THE FLOOD PROTECTION ENDS AT SITE OUTFACE #2 SINCE SUBSECTION G2.b STATES
"DOWNSTREAM STORMWATER CONVEYANCE SYSTEMS DO NOT REQUIRE ANY ADDITIONAL
/ - S_ ANALYSIS TO SHOW COMPLIANCE WITH FLOOD PROTECTION CRITERIA IF THIS OPTION IS
UTILIZED."
- �_ _ _ _ - - - - -- ---- - - ATTENUATED IN
: �� '-- _ ,. �..� - _ T T � �\ / - - - j / / / ,: \\\\\\�\\ \ \ ��\\ \ \ \ \ \ \ PLEASE NOTE, THE BULK OF THE PROPOSED IMPROVEMENTS ARE CAPTURED AND
UNDERGROUND DETENTION SYSTEMS #1 & #2 (POST -DEVELOPMENT SUBAREAS 1 & 2,
RESPECTFULLY). WHERE PROPOSED IMPROVEMENTS &LAND COVER CHANGES OCCUR OUTSIDE OF
- - _
POST -DEVELOPMENT SUBAREAS 1 & 2, FOR EXAMPLE THE REAR PORTIONS OF THE SINGLE FAMILY
DETACHED LOTS 1, 2, 9-23, 30 & 50-54, THE PERVIOUS & DISCONNECTED IMPERVIOUS AREAS
Room,- SHALL BE RELEASED IN A SHEET FLOW MANNER THAT IS NOT CONCENTRATED OR DETAINED.
/ - / l I / / / "'° � � � " • - : '� �: : � -:-:- -,": � : : -�- ! � � .✓ <": 1.: -.:. �-' - - � -'- - / °/ / "' - \ \ \ \ \ \ \ \ \ \ - _ --Y � \ ?�� \\ ` \ � \ � \ \ HOUSES ON THESE LOTS SHALL HAVE SPLASH BLOCKS AT THE OUTLETS OF THEIR DOWNSPOUTS
N.
T PREVENT EROSION, SEDIMENTATION R FLOODING F DOWN GRADIENT PROPERTIES. THE
✓.: °�^ - °.+ i .. / / / \Hb \ _ T x : 1 \\ \ \ \ \ o s o 0 0o G o o G
,\ , , � DOWNSPOUT OUTLETS & SPLASH BLOCKS SHALL BE INSTALLED UPLAND OF THE STEEPER TIE-IN
-�� \ \ \� \ \ \ \ \ \: \\\ \ \ \\ \\\ \ \ \ \ GRADES, CLOSER TO THE HOUSES. ALSO, THE STEEPER TIE-IN GRADES SHALL BE STABILIZED
PRIOR TO THE INSTALLATION FTHEDOWNSPOUTS AND SPLASH K SEE SHEET FOR A
\0 s s oc s s s 8
DETAIL OF THE SPLASH BLOCK, OR EQUIVALENT. PLEASE ALSO SEE THE ATTACHED STORMWATER
MANAGEMENT CALCULATIONS PACKET FOR ADDITIONAL DETAILS.
0.86 ac. OF PROPOSED SWM FOREST`..'.
: / / & OPEN SPACE EASEMENT AREA �' / A V A AA v.:'j'✓ \� 1 V A \ - ��
/ 3H _ i v /� v v y V , I V°rz� �A A
'� / � v \ � s \ - _ v � A `�.; v v\ 0.77 ac. OF PROPOSED SWM FOREST \ � •
&AA PEN SPACE EASEMEN
T AREAV� \
\ V \ V 0.07 ac. OF PROPOSED SWM FOREST
& OPEN SPACE EASEMENT AREA
ac. OF PROPOSED SWM FOREST
S
/ I &OPEN SPACE EASEMENT AREA
/ L$ -
m ,.
1'
X \
/✓ It \ 1
PROPOSED ESC LIMITS OF DISTURBANCE BOUNDARY IS
USED TO DEFINE THE VRRM WATER QUALITY BOUNDARY
c
6
1
i
_ Y
\ \ \
\ ' � .. , •' ,, - '. � _ °s � . / ; 1 i •" � \\� PROPOSED LIMITS OF DISTURBANCE ENCOMPASSES
`.� � • ` � � I - - � _ � \\ \\ \\� ALL PROPOSED WORK ASSOCIATED WITH THIS PLAN.
THE LIMITS OF DISTURBANCE DOES NOT ENCROACH
INTO THE SWM FOREST & OPEN SPACE EASEMENT.
/
/ A
/ I® V\ A VA A�\VA�V\VA�� 4
\\\\\\\\\\\\ \\\\\\ \\- \ r \ 8 \ ,
/
///
0.54 a[. OF PROPOSED SWM FOREST
\ \\ \ \\ \ \ \\ \ \ I I & OPEN SPACE EASEMENT AREA
1
vI
V� V
yam' p /A
U���—
1.14 ac. OF PROPOSED SWM FOREST \
/ e /
�a�&OPEN SPACE EASEMENT AREA � i, _ / ' / / / / / / / / /� - \ I � �//. Water Quality Impervious Area Summary
121,500 sf
40,230 sf
29,625 sf
105,350 sf
/ \ '`. // / / / / / 296,705 sf
V A \ l �5 SWM FOREST AND OPEN SPACE EASEMENT NOTE: \ , ` / (TRAPHIC�ALLi / �� 1.29 ac. OF PROPOSED SWM FOREST o ao Water Quality Ground Cover Summary
THE SWM FOREST AND OPEN SPACE EASEMENT IS SUBJECT TO THE GUIDANCE SET FORTH BY THE DEQ IN I so isd /
/�� j /,, _ �A &OPEN SPACE EASEMENT AREA
THE VIRGINIA STORMWATER MANAGEMENT PROGRAM. THE AREAS WILL REMAIN UNDISTURBED IN A I �-- Forest / Open Space Area 8.76 ac.
/ �' \ NATURAL, VEGETATED STATE, EXCEPT FOR ACTIVITIES AS APPROVED BY THE LOCAL PROGRAM AUTHORITY, I I - - I Managed Turf Area 20.99 ac.
SUCH AS FOREST MANAGEMENT, CONTROL OF INVASIVE SPECIES, REPLANTING AND REVEGETATING, / ' -
/ PASSIVE RECREATION (E.G., TRAILS), AND LIMITED BUSH HOGGING TO MAINTAIN DESIRED VEGETATIVE I I -� \ Impervious Area 6.81 ac. . /// // ✓ \ \ \ \ �� �/ COMMUNITY (BUT NO MORE THAN FOUR TIMES A YEAR). - ( IN FEET
i
/ 1 inch 80 ft.\ 36.56 ac.
a
SCOTT/R. CULLINS'Z
r-�
Lic. No. 035791,'
pow 9/28/22��
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JOB NO.
202198
SCALE
1 "=80'
SHEET NO.
16
UNDERGROUND DETENTION SYSTEM #1 DETAIL: SCALE 1 "=30'
a
PROPOSED¢
CN
DETENTIOP
445
445
PROPOSED ACCESS MH W/
STAIRS FOR INSPECTION
& MAINTENANCE, TYP.
10-yr
EAK W
E=435.
0
2-yr P
AK WS
=433.1
440
-yr PEAK
ws
=432.1C
440
EXISTIN
GRADE
1.5
MIN.
435
iffm
435
P
ROPOSED
GRADE
12o"PERFORATED
PUNDERGROUND
SYSTEM @ o.5o%
'
60" MH
w/ LID
430
RIM=43
.50
430
II=423.
8 (AS)
I0=416.
8 (A3)
STR. A5,
20.50 L
OF
WEIR P
TE, SEE
024" HD
E @ 2.3
/0
DETAI
ON TH
SHEET
4
425
425
03-�" L
W-FLO
ORIFICE
INV.
420
WEIR PLAT
=424.50]
STR. A2
420
04"60"
INV.
MH
wl LID
PROPOS
D 0120"
OUT
RIM=41
.37
424.47
CONTEC
PERFORATED
II=410.
7 (
PIPE S
RROUNDIED IN
I =4
7 (Al Al
STONE
WRAPPED
IN
A FILTERFABRCV,
TYP.
ST
PROPOSED
VI
415
STD.
ES-1
415
CONTRACTOR SHALL INSTALL A
Opp 00
`THICK STEEL PLATE AT THE
@B
BOTTOM OF THE STRUCTURE
po OF
03 EES
1 INV.
OUT=40
.50
410
410
STR.
1, 030"
HDPE
2.61%
P F
OPOSED
FLAT VDO1
CLASS Al,
EC-1 RI PRA
P OUTLET
PROTECTION
w/ GEOT
XTILE FILTER
FABRIC
405
L
NDERLAY
ENT(OP
=21T, W1=
.5, W2 2
', D=18").
405
FABUCTOBE
E EDINT
I EX. GROUND
9" MI
.ATENDS
&At
ONG PERIMETER.
FABRIC
TOO
ERLAPA MIN.
OF 9".
402
1
1
1
1
1
1
1
402
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7
7
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0+50 1+00 1+50 2+00 2+50 3+00 3+50
UGD SYSTEM #15ECTION
PROFILE SCALES
1"=5' (V)
1'=50'(H)
i. THE CONTRACTOR SHALL BE RESPONSIBLE FOR LAYOUT OF ALL WORK COVERED UNDER THESE PLANS.
2. THE CONTRACTOR SHALL VERIFY ALL DIMENSIONS IN THE FIELD AND NOTIFY THE DESIGNER OF ANY VARIANCE FROM THE PLAN.
3. REFER TO THE APPROVED ROAD & SUBDIVISION PLANS FOR ANY DETAILED SITE INFORMATION.
4. ALL WORK SHALL BE COORDINATED WITH OTHER PARTIES.
S. MINOR FIELD ADJUSTMENTS MAYBE NECESSARY DUE TO SITE CONDITIONS. MAJOR ADJUSTMENTS MUST BE APPROVED BY THE DESIGNER.
GENERAL CONSTRUCTION SEQUENCE NARRATIVE
i. THE CONTRACTOR SHALL ASSEMBLE CONSTRUCTION MATERIALS ON -SITE, MAKING SURE THEY MEET DESIGN SPECIFICATIONS AND ARE PREPARED AT
STAGING AREAS WHEN POSSIBLE.
2. THE CONTRACTOR SHALL CLEAR AND STRIP THE PROJECT AREA IF REQUIRED TO THE DESIRED SUB -GRADE.
3. CONTRACTOR SHALL EXCAVATE THE TRENCH.
4. THE TRENCH FOR THE UGD SYSTEM SHALL EXTEND 3' BEYOND THE PIPES' SPRINGLINES.
5. CONTRACTOR SHALL WRAP THE EXCAVATED TRENCH WITH A 6 OUNCE FILTER FABRIC CLOTH. A SUITABLE FOUNDATION SHALL BE BENEATH THE TRENCH's
FILTER CLOTH.
6. TRENCH TO INCLUDE A 6"#57 STONE BED AT 95% COMPACTION BENEATH THE STORM PIPES.
7. CONTRACTOR SHALL INSTALL THE UGD DETENTION SYSTEM, INCLUSIVE OF THE OUTFALLS AND ALL OF THE ASSOCIATED STRUCTURES.
8. TRENCH SHALL BE BACKFILLED WITH COMPACTED #57 STONE IN 8" LIFTS AND SHALL EXTEND 6" VERTICALLY ABOVE THE CROWNS OF THE PIPES.
9. THE TOP OF THE#57 STONE SHALL BE COVERED WITH A 6 OUNCE FILTER FABRIC CLOTH, OVERLAPPING THE PREVIOUSLY INSTALLED CLOTH THAT
SURROUNDS THE BOTTOM AND SIDES OF THE TRENCH.
io. SUITABLE FILL REACHING THE FINISHED GRADE SHALL BE APPLIED ABOVE THE TOP LAYER'S FILTER CLOTHES, MEETING MINIMUM PIPE MANUFACTURER'S
REQUIREMENTS TO PREVENT FLOATATION AND ENSURING PIPE INTEGRITY IS MAINTAINED.
ii. A MINIMUM COVER OF 18" IS REQUIRED ABOVE THE CROWN OF THE DETENTION SYSTEM's PIPES. THE MINIMUM 6"OF#57 STONE ABOVE THE CROWN OF THE
PIPES CAN BE PART OF THE MINIMUM 18" OF COVER.
12. SEE THE MANUFACTURER'S SPECIFICATIONS FOR ADDITIONAL UNDERGROUND DETENTION SYSTEM REQUIREMENTS.
INSPECTIONS DURING CONSTRUCTION:
CONSTRUCTION INSPECTIONS ARE CRITICAL TO ENSURE THE UNDERGROUND DETENTION SYSTEM IS PROPERLY BUILT. BECAUSE THE TIMING OF THE
INSTALLATION IS DICTATED BY THE CONTRACTOR THE CONTRACTOR SHALL BE RESPONSIBLE FOR CONTACTING THE ENGINEER COUNTY INSPECTOR AND
CONTECH REPRESENTATIVE PRIOR TO INSTALLATION. CONTECH, OR AN EQUIVALENT PIPE MANUFACTURER, SHALL BE CONTACTED WELL AHEAD OF THE
CONSTRUCTION START DATE TO ENSURE ADEQUATE LEAD TIME FOR MATERIALS AND DELIVERY. MULTIPLE SITE VISITS AND INSPECTIONS ARE REQUIRED TO BE
SCHEDULED BY THE CONTRACTOR, WITH THE ENGINEER, COUNTY INSPECTOR & PIPE MANUFACTURER, DURING THE FOLLOWING STAGES OF THE UNDERGROUND
DETENTION SYSTEM CONSTRUCTION PROCESS:
i. PRE -CONSTRUCTION MEETING
2. INITIAL SITE PREPARATION (INCLUDING INSTALLATION OF PROJECT E&S CONTROLS)
3. EXCAVATION/GRADING (E.G., INTERIM/FINAL ELEVATIONS).
4. WHEN THE DETENTION PIPE SUBGRADE IS READY FOR PIPE CONSTRUCTION, BUT BEFORE STONE BEDDING IS INSTALLED.
S. AFTER STONE BEDDING IS PLACED AND COMPACTED, BUT PRIOR TO PIPE INSTALLATION.
6. AT THE TIME OF THE PIPE INSTALLATION.
7. AFTER PIPE INSTALLATION, BUT PRIOR TO PLACING BACKFILL& FILL OVER THE SYSTEM.
8. FINAL INSPECTION (DEVELOP A PUNCH LIST FOR FACILITY ACCEPTANCE)
PLEASE ALSO SEE BELOW, UNDER MAINTENANCE, FOR REQUIRED INSPECTIONS AFTER INSTALLATION IS COMPLETE.
N AINI"ENANCE AFTER CONSTRUCTION:
THE FOLLOWING MAINTENANCE TASKS SHALL BE PERFORMED BY THE CONTRACTOR IN THE FIRST YEAR FOLLOWING THE INSTALLATION OF THE UNDERGROUND
DETENTION SYSTEM.
1. FOR THE FIRSTYEAR FOLLOWING CONSTRUCTION, THE SITE SHALL BE INSPECTED BY THE CONTRACTOR QUARTERLY AND AFTER STORM EVENTS THAT
EXCEED 1/21NCH OF RAINFALL.
2. THE CONTRACTOR SHALL LOOK FOR BARE OR ERODING AREAS IN THE CONTRIBUTING DRAINAGE AREA AND AROUND THE UNDERGROUND DETENTION
SYSTEM AND MAKE SURE THEY ARE IMMEDIATELY STABILIZED. CONTRACTOR SHALL SPOT RESEED AS NECESSARYAND ENSURE ADEQUATE SITE COVERAGE
IS PROVIDED WITHIN THE FIRST YEAR. AT THE QUARTERLY INSPECTIONS, AND AFTER EACH RAINFALL EVENT IN EXCESS OF i", THE CONTRACTOR SHALL
PERFORM THE ANNUAL MAINTENANCE TASKS DESCRIBED BELOW IN #3.
AFTER THE FIRST YEAR THE OWNER SHALL PERFORM FOLLOW-UP INSPECTIONS ANNUALLY, AND AFTER EACH SIGNIFICANT RAINFALL EVENT:
3. A SPRING MAINTENANCE INSPECTION AND CLEANUP SHALL BE CONDUCTED ANNUALLY. THE MAINTENANCE PROGRAM FOR THE UNDERGROUND DETENTION
SYSTEM SHALL INCLUDE CLEANING IT ANNUALLY OF TRASH, DEBRIS & SEDIMENT AND ENSURING THE INTEGRITY OF THE TRASH RACKS AND OUTFALL &
INFLOW PIPES. THE OWNER SHALL ENSURE THE SYSTEM IS OPERATING AS INTENDED AND IS NOT CLOGGED OR DAMAGED. THE OWNER SHALL IMMEDIATELY
CLEAN & REPAIR THE FACILITY AS NECESSARY AND SHALL PAY SPECIAL ATTENTION TO THE INLET AND OUTLET LOCATIONS. THE ACCESS MANHOLES SHALL
BE USED FOR INSPECTION AND MAINTENANCE.
STEEL PLATE NOTE:
ANY DRAINAGE STRUCTURE WITH A DROP IN EXCESS OF 4' VERTICALLY SHALL
HAVE A'2" THICK STEEL PLATE AT THE BOTTOM OF THE STRUCTURE, TYPICAL.
5
OUT=432.25
430
STR. All, 8.00 LF OF
018" HDPE @ 14.63%
25
420
CONTRACTOR SHALL INSTALL
)"THICK STEEL PLATE AT THE
BOTTOM OF THE STRUCTURE
415
JJ
O
W W
�p
�
M
W W
K
B" MH / LID
[M-43 .00
=431. 8 (All)
-427. 8(A9)
435
60" MH w/ LID
RIM=430.50
II=423.98 (A9)
II=423.98 (AS)
XISTIN
GRADE
AS, 28.02 LF OF
HDPE @ 11.06%
1 4251
420
415
0+50 0+75
UGD SYSTEM #1 BYPASS
GENERAL SWM NOTES:
i. STATE APPROVED TRASH RACKS SHALL BE INSTALLED ON ALL ORIFICE OPENINGS. SEE DETAIL ON THIS SHEET, OR
EQUIVALENT, FOR DESIGN.
2. CONTRACTOR SHALL HIRE A THIRD PARTY GEOTECHNICAL ENGINEER TO ENSURE THE STRUCTURAL FILL&UGD SYSTEM's
STONE BACKFILL ARE STRUCTURALLY SOUND. GEOTECHNICAL ENGINEER SHALL BE PRESENT DURING THE CONSTRUCTION OF
THE FILL AREAS AND DURING THE CORE SAMPLING.
0120" WEIR PLATE DETAIL
(UNDERGROUND DETENTION SYSTEM #2)
NOTE: SCALE: i"=5'
WEIR PLATE TO BE SECURELY
BOLTED, OR SIMILARLY FASTENED,
TO THE DETENTION SYSTEM.
MANUFACTURE / INSTALL ONE (1) 027" HIGH -FLOW
ORIFICE IN THE STEEL WEIR PLATE AT THE TOP OF
THE WEIR PLATE (INVERT ELEVATION=432.25)
MANUFACTURE / INSTALL TWO (2) 019" -
MID -FLOW ORIFICES IN THE STEEL WEIR
PLATE (INVERT ELEVATIONS=432.25)
INSTALL TRASH RACKS ON ALL -
ORIFICES, TYP. SEE SHEET 18 FOR
THE WEIR PLATE's TRASHRACK
DETAIL, OR EQUIVALENT.
ELEV
ELEV
NFORCED 12 GA.
STEEL PLATE
ELEV.=424.So'
MANUFACTURE/ INSTALL ONE (1) 03 -J" LOW -FLOW
ORIFICE IN THE STEEL WEIR PLATE AT THE LOW POINT OF
THE DETENTION SYSTEM (INVERT ELEVATION= 424.50')
CONTRACTOR SHALL CALLTHE COUNTY INSPECTOR&
- 0120" INV. 425.26' ENGINEERING DEPARTMENT 24-HOURS BEFORE ANY
---- -- ANTICIPATED CONSTRUCTION ACTIVITIES FOR THE BMPs. THIS
0+0 /,OF 0120 IS INCLUSIVE OF WHEN THE UNDERGROUND DETENTION
CMP @ .0.50% SYSTEM SUBGRADE IS READY FOR PIPE CONSTRUCTION, BUT
0120" INV. 425 1BEFORE STONE BEDDING IS INSTALLED.
3'
0120" INV. 425.20' 13' 9F 0120'
\CMP @ 0 50%
PROPOSED ACCESS MH w/ STAIRS FOR -
INSPECTION & MAINTENANCE, TYP. A 0120" INV. 424.95'
V A A V 0120" INV. 424-88' Y
v I A
0120" INV. 425.02'
1
PROPOSED 0120" PERFORATED \ \ \\ S
CMP UNDERGROUND DETENTION 1 PROPOSED VARIABLE\
SYSTEM SURROUNDED IN STONE & `, WIDTH SWIM ESMT.
WRAPPED IN A FILTER FABRIC, TYP.
/PROPOSED 10' WIDE
PROPOSED Aii, ELEVATED 015"
SWIM ACCESS ESMT.
HDPE EMERGENCY BYPASS TO
o o rs ro CONVEY LARGER STORM EVENTS 1
i
/ - L / 13' OF 0120" 0 b0 STR. A10 I '. O 'I
CMP/@ 0.50% - 0120" INV. 424.69'
� \ �
0120" INV.
PROPOSED o' WIDEACCESS ICI // 1+ U /I/ / �E R PLATE, SEE
FROM PUBLIC ROADWAY' -�
_ � DETAIL ON THIS SHEET \
0+52 COUNTY DEFINED
✓ / / / / / S, 4 PRESERVED STEER-
SLOPES, TYP.
012 "-INV. 424.6T
✓ ✓ 4120" INV 24.61' ✓ 'Y
✓ 0120-INV 424.54'✓
-0120" INV. az4 50'
PROPOSED AS, LOWER 024" HDPE PRIMARY OUTFALLT
i ✓ ✓ CONVEY LESS SEVERE, MORE COMMON STORM EVENTS. / /I
/ ✓ ✓ RION-OF-WAY, i / / SEE THIS SHEET FOR
TYPICAL. ✓ ✓ i SCALED .PROFILES OF
/ i _ - ✓ %-� THE ALIGNMENTS (TYP.)
�.00' STREAM BUFFER / ioo-YRFLOODPLAIN
✓ ✓ i
/
✓ ✓ ✓ LIMITS, TYP./ /
i
COUNTY DEFINED � � � i � i / � /✓
/ -MANAGED STEEP /
/ SLOPES, TYP. ✓ F �
/ R ED SWIM FOREST & PROPOSED DOT STD. _ES 4
OP N SPACEF EASEMENT
/. PROPOSED FLATVDOT CLASS Al, EC-1 RIPRAP OUTLET 3+5 f -
PROTECTION w/ GEOTEXTILE FILTER FABRIC `lJ -
/ UNDERLAYMENT (OP L=39', W1=7.5', W2=25, D=18'). C
/
FABRIC TO BE KEYED INTO EX. GROUND 9" MIN. AT ENDS /
/ / / &ALONG PERIMETER. FABRIC TO OVERLAP A MIN. OF 9". j
/ / / ✓� LIMITS OF
STREAM, TYP. / PROPERTY
LIMITS,
TYPICAL.
� / C
GRAPHIC SCALE
30 0 15 30 60
( IN FEET )
1 inch = 30 ft.
UNDERGROUND DETENTION SYSTEM STORAGE TABLE
(E)
(F)
(G)
(A)
(B)
(C)
(D)
C- B
D x E
B+ F
FacilityElevations
Area of 120"
UGD System
Y
Void Space of
p
Area of Stone
Storage Area in
g
Total UGD System
Y
(ft)
Perforated CMP (sf)
Footprint (sf)
Stone (%)
(Sf)
Stone (cf)
Storage Area (sf)
424.00
0
5,633
40%
5,633
2,253
2,253
424.50
0
5,633
40%
5,633
2,253
2,253
425.50
2,478
5,633
40%
3,155
1,262
3,740
426.50
3,304
5,633
40%
2,329
932
4,236
427.50
3,785
5,633
40%
1,848
739
4,524
428.50
4,047
5,633
40%
1,586
635
4,681
429.50
4,130
5,633
40%
1,503
601
4,731
430.50
4,047
5,633
40%
1,586
635
4,681
431.50
3,785
5,633
40%
1,848
739
4,524
432.50
3,304
5,633
40%
2,329
932
4,236
433.50
2,478
5,633
40%
3,155
1,262
3,740
434.50
0
5,633
40%
5,633
2,253
2,253
435.50
0
5,633
40%
5,633
2,253
2,253
SCOTT/R. CULLINS'Z
r-y
Lic. No. 035791 n
P 9/28/22
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Ul
JOB NO.
202198
SCALE
AS SHOWN
SHEET NO.
17
455
455
a
PROPOSED
INSPECTIC
10-yr PEAK WSE
2-yr PEAK WSE-
1-yr PEAK WSE=
PROPOSED 0120"PERFORA
UNDERGROUND DETENTION SYSTEM
PROPOSE[
CONTECH PERF
PIPE SURROUf
STONE & WRAI
A FILTER FABR
WEIR PL
DETAIL ON THI
o LC
ORIFIC'
WEIR PLATE
4CCESS MH w/ STAIRS FOR -
IN & MAINTENANCE, TYP.
1.5'
MIN.
450
STR. B6
450
-448.61
447.44
RIM=45
.45
446.85
II=438.
3(B7)
I0=433.
3 BS
'ED CMP
P o.50%
445
445
0120"
48" MH
wl LID
DRATED
RIM=44
.00
IDED IN
II=43
B9
'PED IN
II=432.
9 (135)
C, TYP.
IO=428.
9 (B3)
440
440
K. B7
8.o
OF
SE, SEE
015" H
0.
PE @ 0.
0%
i SHEET
W-FLOW
INV. IN
a3s.00'
PROPOSED
435
GRAD
435
15" INV.
CONTRA
TOR SH
LLINST
LL
438.97
OU
A$"TRIG
STEELPtTRUCTURE
ATEAT
HE
BOTTO
OF THE
STR. B
, 11.00 1
F OF
015" HE
PE@1491%
430
XISTING
STR. B2
430
GRADE
RIM=42
.54
II=420.
3 (B3)
IO=420.
3 B1
gO
PROPOS
D VDOT
v,
STD.
ES-1
25
ti
425
@
r�
O�
STR.
BI, 024"
420
HOPE
1.85%
420
024" F
S-1 INV.
OU
=420.00
PROPOSED
FLAT VDOT
CLASS At,
C-1 RIPRA
OUTLET
PROTECTIOftl
w
UND
RLAYMEN
FABRIC
. FABRIC
0BE KEYED
INTO EX
GROUND
9"MIN.
TENDSO&
ALONG PERIMETER.
ABRICTO415
415
OVE
LAPAMI
.OF9"(
=6',W2=
0', D=18")
J J
0�
N
0)
c0
r7
W W
r7
.
LO O
Ln
W
r7
LO
r7 N
N
N
LOi
0+50 1+00 1+50 2+00
UGD SYSTEM #z SECTION
0120" WEIR PLATE DETAIL
(UNDERGROUND DETENTION SYSTEM #2)
NOTE: SCALE:1"=5'
WEIR PLATE TO BE SECURELY
BOLTED, OR SIMILARLY FASTENED,
TO THE DETENTION SYSTEM.
MANUFACTURE / INSTALL ONE (1) 04" HIGH -FLOW -
ORIFICE IN THE STEEL WEIR PLATE ATTHE TOP OF
THE WEIR PLATE (INVERT ELEVATION=448.67)
MANUFACTURE/ INSTALL THREE (3) 06- 6"�
MID -FLOW ORIFICES IN THE STEEL WEIR
PLATE (INVERT ELEVATIONS=446.85)
INSTALL TRASH RACKS ON ALL -
ORIFICES, TYP. SEE THIS SHEET FOR
THE WEIR PLATE'S TRASHRACK
DETAIL, OR EQUIVALENT.
NFORCED 12 GA.
STEEL PLATE
ELEV.=439.00'
MANUFACTURE / INSTALL ONE (1) 0',f' LOW -FLOW
ORIFICE IN THE STEEL WEIR PLATE ATTHE LOW POINT OF
THE DETENTION SYSTEM (INVERT ELEVATION=439.001
UNDERGROUND
DETENTION SYSTEM STORAGE TABLE
(E)
(F)
(G)
(A)
(B)
(C)
(D)
C-B
DxE
B+F
Facility Elevations
Area of 120"
UGD System
Void Space of
Area of Stone
Storage Area in
Total UGD System
(ft)
Perforated CMP (sf)
Footprint (sf)
Stone (%)
(sf)
Stone (cf)
Storage Area (sf)
438.50
0
576
40%
576
230
230
439.00
0
576
40%
576
230
230
440.00
150
576
40%
426
170
320
441.00
200
576
40%
376
150
350
442.00
229
576
40%
347
139
368
443.00
245
576
40%
331
132
377
444.00
250
576
40%
326
130
380
445.00
245
576
40%
331
132
377
446.00
229
576
40%
347
139
368
447.00
200
576
40%
376
150
350
448.00
150
576
40%
426
170
320
449.00
0
576
40%
576
230
230
450.00
0
576
40%
576
230
230
PROFILE SCALES
1"=5' (V)
1"=50'(H)
455 455
XXXX STR, BI
48" MH / LID
RIM=45 .42
II=44 0 (B11)
IO= 446 60 (B9)
450 450
OUT=446.75 STR. H
48" MH w/ LID
RIM=445.00
II=438.29 (B9)
II=432.29 (B5)
445 I0=428.29 (83)
STR. 311, 8.00 LF OF STR. B9, 23.50 LF OF
015" HOPE @ 8.13% 015" HDPE @ 9.83%
CONTRACTOR SHALL INSTALL L p GrA435
ED
A;' THICK STEEL PLATE ATTHE \
BOTTOM OF THE STRUCTURE
0 I GRADEI Ill 1430
425
1
425
JJ
co
00 O
O
00O
r-
WW
aJro
Wl
LO n
d
� n
d
Ii
0+50 0+75
UGD SYSTEM #z BYPASS
General Construction notes for Stormwater Manaaement Plans
1. All dams and constructed fill to be within 95% of maximum dry
density and 2% of optimum moisture content. All fill material to
be approved by a geotechnical engineer. A geotechnical engineer is
to be present during construction of dams.
2. Pipe and riser joints are to be watertight within stormwater
management facilities.
3. For temporary sediment traps or basins which are to be converted
to permanent stormwater management facilities; conversion is not
to take place until the site is stabilized, and permission has been
obtained from the County erosion control inspector.
Splash Block Instructions
I
Before installation of the Splash Block, or any
rain diverting accessory, make sure the grade
around the foundation slopes away from the I
house. There should be a 6 inch fall in the first
10 feet from the house, j
E 10 Feet
6 in
1
Pal
fo
Water directing chevron pattern
reduces washout
AMERIMAX
amerimax.com 1 800-347-2586
info@ametmax-corn
Hole for landscape spike at
front of splashblock allows
it to be secured to ground
SPLASH BLOCK NOTES:
1. SPLASH BLOCKS SHALL BE INSTALLED ATTHE OUTLETS OF THE DOWNSPOUTS LOCATED ALONG THE REAR PORTIONS OF THE
HOMES LOCATED ON LOTS 1, 2, 9-23, 30 & 50-54.
2. THE AREAS DOWNSTREAM FROM THE SPLASH BLOCKS SHALL BE STABILIZED PRIOR TO THE INSTALLATION OF THE
DOWNSPOUTS AND SPLASH BLOCKS.
UNDERGROUND DETENTION SYSTEM #2 DETAIL: SCALE 1 °=30'
PROPOSED PUBLIC ROADWAY & SIDEWALK TO PROVIDE
ACCESS TO UNDERGROUND DETENTION SYSTEM
i
, 21' OF 0120" CMP @ 0.50%�
0120" CMP INV.-439.00 / '
PROPOSED ACCESS M H w/STAI IRS FOR.
INSPECTION & MAINTENANCE, TYP.
/ 0+
PROPOSED 0120" PERFORATED CMP UNDERGROUND DETENTION
SYSTEM SURROUNDED IN STONE & WRAPPED IN A FILTER FABRIC, TYP. "
i V X \� 0120" CMP INV.=438.97
PROPOSED B7, LOWER 015" HOPE
PRIMARY OUTFALL TO CONVEY LESS
/ SEVERE, MORE COMMON STORM EVENTS. -
i
�-COUNTY DEFINED
MANAGED STEEP
SLOPES, TYP.
100'STREAM BUFFER
I
COUNTY DEFINED �I STRy�2
PRESERVED STEEP
SLOPES, TYP.
Z
PROPOSED VDOT STD. ES-1
PROPOSED FLAT VDOT CLASS Al, EC-1 RIPRAP OUTLET PROTECTION
X X w/ GEOTEXTI LE FILTER FABRIC UNDERLAYM ENT. FABRIC TO BE KEYED
\ INTO EX. GROUND 9" MIN. AT ENDS & ALONG PERIMETER. FABRICTO
Y \ \ OVERLAP A MIN. OF 9" (OP L=17', W1=6% W2=10, D-18" )S
Z'
X \ \ \ EXISTING
\ \ \ \ \ \ CULVERT
CONTRACTOR SHALL CALL THE COUNTY INSPECTOR&
ENGINEERING DEPARTMENT 24-HOURS BEFORE ANY
ANTICIPATED CONSTRUCTION ACTIVITIES FOR THE BIVI THIS
IS INCLUSIVE OF WHEN THE UNDERGROUND DETENTION
SYSTEM SUBGRADE IS READY FOR PIPE CONSTRUCTION, BUT
BEFORE STONE BEDDING IS INSTALLED.
GRAPHIC SCALE
30 0 15 30 60
( IN FEET )
1 inch = 30 ft.
1
ISOtret.l'lu
� A
0120" CMP INV 439.13'
0+00
t
PROPOSED Bii, ELEVATED 015"
HOPE EMERGENCY BYPASS TO
CONVEY LARGER STORM EVENTS
-R. B1 V
WEIR PLATE, SEE
DETAIL ONN TTj\HIS SHEET
PROPOSED VARIABLE \
WIDTH SWM ESMT. 4
RIGHT-OF-WAY,
,SEE THIS SHEET FOR
SCALED PROFILES OF
:THE ALIGNMENTS (TYP.),
PROPERTY
LIMITS,
2+00
TYPICAL.
LIMITS OF
STREAM, TYP.
1 /2" zlne plated hnok
ottachod with 3,!8' roetenel
-I 4 ruu finial
f / 1, 4' HDPE p,ete (optional)
HOpF itruclural pinslin with.
2-1!6- hole. and 1/4" plate
menufautured by Ploxt.ic
/'� Solutions Inc or equal
C)
Solutions
I I "V . -,I Lr S, C1I I1.1I1
DEBRIS CAGE
• shouu with optional plate
1ppf itrunlurnl plantir with
'/B" holes and 114- plate
,ufactured by Plastic
Minns Inror equal
PLAtTIC
R.O. Rox =3AA
SOLUTIQNS I incites er \'A 2lBUI
INC. tl7'Y-877-fi727
neplaitk-laht caun
J
SCOTT/R. CULLINS'Z
Lic. No. 035791,'
lP 9/28/22
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JOB NO.
202198
SCALE
AS SHOWN
SHEET N0.
18
HUGGER FLAT GASKET
SINGLE BAR, BAND
BOLT AND STRAP (SBBS)
FLAT GASKET
CONNECTION DETAIL
(SBBS)
2 2/3"xl/2" RE -ROLLED END HEL-COR PIPE
GENERAL NOTES:
1. JOINT IS TO BE ASSEMBLED PER AASHTO BRIDGE CONSTRUCTION SPECIFICATION SEC 26.4.2.4.
2. BAND MATERIALS AND/OR COATING CAN VARY BY LOCATION. CONTACT YOUR CONTECH REPRESENTATIVE FOR AVAILABILITY.
3. BANDS ARE SHAPED TO MATCH THE PIPE -ARCH WHEN APPLICABLE.
4. BANDS ARE NORMALLY FURNISHED AS FOLLOWS:
• 12"THRU 48" 1-PIECE
• 54" THRU 96" 2-PIECES
• 102" THRU 144" 3-PIECES
5. BAND FASTENERS ARE ATTACHED WITH SPOT WELDS, RIVETS OR HAND WELDS.
6. ALL CMP IS REROLLED TO HAVE ANNULAR END CORRUGATIONS OF 2 2/3"xl/2"
7. DIMENSIONS ARE SUBJECT TO MANUFACTURING TOLERANCES.
8. ORDER SHALL DESIGNATE GASKET OPTION, IF REQUIRED (SEE DETAILS ABOVE).
H-12 HUGGER BAND DETAIL
NOT TO SCALE
20 MIL PE
IMPERMEABLE
LINER OVER
TOP OF PIPE
(IF REQUIRED)
TYP.
LIMITS OF
- REQUIRED
BACKFILL
36" SEE TYPICAL
BACKFILL DETAIL
NOTES
TYPICAL SECTION VIEW
NOT TO SCALE
NOTE: IF SALTING AGENTS FOR SNOW AND ICE REMOVAL ARE USED ON OR NEAR THE
PROJECT, A GEOMEMBRANE BARRIER IS RECOMMENDED WITH THE SYSTEM. THE
GEOMEMBRANE LINER IS INTENDED TO HELP PROTECT THE SYSTEM FROM THE
POTENTIAL ADVERSE EFFECTS THAT MAY RESULT FROM A CHANGE IN THE
SURROUNDING ENVIRONMENT OVER A PERIOD OF TIME. PLEASE REFER TO THE
COR U ATED METAL PIPE DETENTION DESIGN GUIDE FOR ADDITIO FONRM�bI�N.
I�TREN H ONDITI N'� EMBANKM O DI I
\i�. a / FINAL BACKFILL
DIAMETER
MIN.
COVER
CORR.
PROFILE
6"-10"
12"
1 1/2" x 1/4"
12"-48"
12"
2 2/3" x 1/2"
54"-96"
12"
3" x 1", 5" x 1"
102"-144"
D/8
3" x 1", 5" x 1"
INITIAL FILL ENVELOPED 1a
BACKFILL REQUIREMENTS FOLLOW THE GUIDELINES OF AASHTO LRFD BRIDGE DESIGN (SEC 12) AND CONSTRUCTION (SEC 26)
1 MINIMUM TRENCH WIDTH MUST ALLOW ROOM FOR PROPER COMPACTION OF HAUNCH MATERIALS UNDER THE PIPE.
THE MINIMUM TRENCH WIDTH (12.6.6.1):
PIPEs 12": D + 16"
PIPE > 12": 1.5D + 12"
la MINIMUM EMBANKMENT WIDTH (IN FEET) FOR INITIAL FILL ENVELOPE (12.6.6.2):
PIPE < 240: 3.01D
PIPE 24" -144": D + 4'0"
PIPE > 144": D + 10'0"
2 THE FOUNDATION UNDER THE PIPE AND SIDE BACKFILL SHALL BE ADEQUATE TO SUPPORT THE LOADS ACTING UPON IT (26.5.2).
3 BEDDING MATERIAL SHALL BE A RELATIVELY LOOSE MATERIAL THAT IS ROUGHLY SHAPED TO FIT THE BOTTOM OF THE PIPE, AND A
MINIMUM OF TWICE THE CORRUGATION DEPTH IN THICKNESS, WITH THE MAXIMUM PARTICLE SIZE OF ONE-HALF OF THE CORRUGATION
DEPTH (26.3.8.1, 26.5.3).
4 CORRUGATED STEEL PIPE (CSP / HEL-COR).
5 HAUNCH ZONE MATERIAL SHALL BE HAND SHOVELED OR SHOVEL SLICED INTO PLACE TO ALLOW FOR PROPER COMPACTION (26.5.4).
5a INITIAL BACKFILL FOR PIPE EMBEDMENT TO MEET AASHTO A-1, A-2 OR A-3 CLASSIFICATION, OR APPROVED EQUAL, COMPACTED TO 90%
STANDARD PROCTOR (T 99). MAXIMUM PARTICLE SIZE NOT TO EXCEED 3" (12.4.1.2). ALL LIFTS PLACED IN A CONTROLLED MANNER. IT IS
RECOMMENDED THAT LIFTS NOT EXCEED AN 8" UNCOMPACTED LIFT HEIGHT TO PREVENT UNEVEN LOADING, AND THE LESSER OF 1/3
THE DIAMETER OR 24" AS THE MAXIMUM DIFFERENTIAL SIDE -TO -SIDE (26.5.4).
6 INITIAL BACKFILL ABOVE PIPE MAY INCLUDE ROAD BASE MATERIAL (AND RIGID PAVEMENT IF APPLICABLE). SEE TABLE ABOVE.
6a TOTAL HEIGHT OF COMPACTED COVER FOR CONVENTIONAL HIGHWAY LOADS IS MEASURED FROM TOP OF PIPE TO BOTTOM OF
FLEXIBLE PAVEMENT OR TOP OF RIGID PAVEMENT (12.6.6.3).
7 FINAL BACKFILL MATERIAL SELECTION AND COMPACTION REQUIREMENTS SHALL FOLLOW THE PROJECT PLANS AND SPECIFICATIONS
PER THE ENGINEER OF RECORD (26.5.4.1).
NOTES:
• GEOTEXTILE SHOULD BE CONSIDERED FOR USE TO PREVENT SOIL MIGRATION INTO VARYING SOIL TYPES (PROJECT ENGINEER).
• FOR MULTIPLE BARREL INSTALLATIONS THE RECOMMENDED STANDARD SPACING BETWEEN PARALLEL PIPE RUNS SHALL BE PIPE DIA./2
BUT NO LESS THAN 12", OR 36" FOR PIPE DIAMETERS 72" AND LARGER.
• CONTACT YOUR CONTECH REPRESENTATIVE FOR NONSTANDARD SPACING (TABLE C12.6.7-1).
TYPICAL BACKFILL DETAIL
NOT TO SCALE
TEMPORARY COVER FOR
CONSTRUCTION LOADS.
HEIGHT OF
COVER
CONSTRUCTION LOADS
FINISHED
GRADE
FOR TEMPORARY CONSTRUCTION VEHICLE LOADS, AN EXTRA AMOUNT OF COMPACTED COVER MAY BE REQUIRED OVER
THE TOP OF THE PIPE. THE HEIGHT -OF -COVER SHALL MEET THE MINIMUM REQUIREMENTS SHOWN IN THE TABLE BELOW.
THE USE OF HEAVY CONSTRUCTION EQUIPMENT NECESSITATES GREATER PROTECTION FOR THE PIPE THAN FINISHED
GRADE COVER MINIMUMS FOR NORMAL HIGHWAY TRAFFIC.
AXLE LOADS
PIPE SPAN,
INCHES
(kips)
18-50 50.75 75-110 110-150
MINIMUM COVER (FT)
2.0
2.5
3.0
3.0
12-42
48-72
3.0
3.0
3.5
4.0
78-120
3.0
3.5
4.0
4.0
126.144
3.5
4.0
4.5
4.5
"MINIMUM COVER MAY VARY, DEPENDING ON LOCAL CONDITIONS. THE CONTRACTOR MUST PROVIDE THE ADDITIONAL
COVER REQUIRED TO AVOID DAMAGE TO THE PIPE. MINIMUM COVER IS MEASURED FROM THE TOP OF THE PIPE TO
THE TOP OF THE MAINTAINED CONSTRUCTION ROADWAY SURFACE.
CONSTRUCTION LOADING DIAGRAM
NOT TO SCALE
A
36"0 MAX., HS-25 ACCESS CASTING
WITH GRADE RINGS AS REQUIRED, TO
BE PROVIDED AND INSTALLED BY
CONTRACTOR. MAY BE TOP MOUNTED
CMP (AS SHOWN) OR RECESSED w
PROTECTION RIM/FINISHED p a
SLAB �__- _-
GRADE _ __- _� VARIES O
Q d d
d
GASKET MATERIAL 0 CMP RISER
SUFFICIENT TO PREVENT a -�
SLAB FROM BEARING ON Lu
o
RISER TO BE PROVIDED BY
CONTRACTOR. OB 11" TYP. rn
SECTION VIEW
ACCESS CASTING NOT SUPPLIED BY CONTECH
2.,
rj.0p �A �B
#4 DIAGONAL TRIM ��T
BAR(TYP.4PLACES), _ ___- __
SEE NOTE
7. __kf__�I
-tt ----4 ---��
i
REINFORCING TABLE
**BEARING
0 CMP
A
B Oi
REINFORCING
PRESSURE
RISER
(PSF)
24"
4'0
26"
#5 @ 10" OCEW
2,540
4'x4'
#5 @ 10" OCEW
1,900
30"
4'-6"0
32"
#5 @ 10- OCEW
2,260
4'-6" x 4'-6"
#5 @ 9" OCEW
1,670
36"
5'0
38"
#5 @ 9" OCEW
2,060
5' x 5'
#5 @ 8" OCEW
1,500
42"
5'-6"0
44"
#5 @ 8" OCEW
1.490
5'-6" x 6-6"
#5 @ 8" OCEW
1,370
48"
6'0
S0'
#5 @ 7" OCE W
1.210
6' x 6'
#5 @ 7" OCEW
1,270
#4 DIAGONAL TRIM 1
BAR (TYP. 4 PLACES),
SEE NOTE 7. I
-I r-
-t - 2" COVER 1-
(TYP)
JI f t _tL-
--- --
LC _ I OJ�� k I /_ >
♦/`� Ili i tiG�yQ i II�,\i
-r \ I�
1 �j
OPENING IN
PROTECTION
SLAB FOR
ACCESS
INTERRUPTED BAR
REPLACEMENT, SEE
NOTE 6.
SPECIFICATION FOR CORRUGATED STEEL PIPE -ALUMINIZED TYPE 2 STEEL
SCOPE
HANDLING AND ASSEMBLY
THIS SPECIFICATION COVERS THE MANUFACTURE AND
SHALL BE IN ACCORDANCE WITH RECOMMENDATIONS OF THE
INSTALLATION OF THE CORRUGATED STEEL PIPE (CSP) DETAILED IN
NATIONAL CORRUGATED STEEL PIPE ASSOCIATION (NCSPA)
THE PROJECT PLANS.
UNDERGROUND DETENTION SYSTEM NOTES:
INSTALLATION
1. TRASHRACKS SHALL BE INSTALLED ON ALL ORIFICES,
MATERIAL
INCLUDING THOSE LOCATED AT THE OUTFALL STRUCTURES
SHALL BE IN ACCORDANCE WITH AASHTO STANDARD
WITHIN THE UNDERGROUND DETENTION SYSTEM.
THE ALUMINIZED TYPE 2 STEEL COILS SHALL CONFORM TO THE
SPECIFICATIONS FOR HIGHWAY BRIDGES, SECTION 26, DIVISION II
2. ANY RETAINING WALLS AND FOUNDATIONS CONSTRUCTED IN
APPLICABLE REQUIREMENTS OFAASHTO M274ORASTMA929.
OR ASTMA798AND INCONFORMANCE WITH THE PROJECT PLANS
THE VICINITY OF THE UNDERGROUND DETENTION SYSTEM
AND SPECIFICATIONS. IF THERE ARE ANY INCONSISTENCIES OR
SHALL BE REVIEWED AND APPROVED BY THE STRUCTURAL
PIPE
CONFLICTS THE CONTRACTOR SHOULD DISCUSS AND RESOLVE
ENGINEER AND A GEOTECHNICAL ENGINEER.
WITH THE SITE ENGINEER.
3. CONTACT COLLINS ENGINEERING (434.293.3719) REGARDING
THE CSP SHALL BE MANUFACTURED IN ACCORDANCE WITH THE
ANY QUESTIONS CONCERNING THE UNDERGROUND DETENTION
APPLICABLE REQUIREMENTS OF AASHTO M36 OR ASTM A760. THE
IT IS ALWAYS THE RESPONSIBILITY OF THE CONTRACTOR TO
SYSTEM.
PIPE SIZES, GAGES AND CORRUGATIONS SHALL BE AS SHOWN ON
FOLLOW OSHA GUIDELINES FOR SAFE PRACTICES.
4. ALL FILL EMBANKMENT MATERIAL SHALL CONSIST
THE PROJECT PLANS.
PREDOMINANTLY OF SOIL AND BE PLACED IN SUCCESSIVE
UNIFORM LAYERS NOT MORE THAN 8 INCHES IN THICKNESS
ALL FABRICATION OFTHE PRODUCT SHALL OCCUR WITHIN THE
BEFORE COMPACTION OVER THE ENTIRE AREA IN
ACCORDANCE WITH THE CURRENT VDOT ROAD AND BRIDGE
UNITED STATES.
SPECIFICATIONS.
5. VDOT STD. IS-1 & ST-1 ARE REQUIRED ON THE
STRUCTURES.
UNDE6.
MATERIAL SPECIFICATION
PRIOR TOOUND CONSTTRUCTIONN T-iESTEM CONTRACTOLR SHALL
TEST -DIG AT THE RECENTLY CONSTRUCTED UPSTREAM
NOT TO SCALE
STORM PIPES & THE EXISTING OUTFALL LOCATIONS TO
CONFIRM THE INVERTS AND TO ENSURE THE PROPOSED
GRADES CAN BE ACHIEVED. CONTRACTOR SHALL CONTACT
COLLINS ENGINEERING OF ANY DISCREPANCIES IN THE
HORIZONTAL VERTICAL ALIGNMENT PRIOR TO ORDERING
1'-4"�
2Yz"
AND CONSTRUCTION.
�
�
7. ALL EXCAVATION FOR UNDERGROUND PIPE INSTALLATION
MUST COMPLY WITH OSHA STANDARDS FOR CONSTRUCTION
INDUSTRY (29 CFR PART 1926).
ALL STEEL PER
8. CONTRACTOR SHALL PROVIDE ADEQUATE STONE BACKFILL
Y4" (#6) REBAR CAN BE CUT FLUSH
-
ASTM A36
FOR THE UNDERGROUND DETENTION SYSTEM PIPES IN
TO OUTSIDE OF RAIL
ACCORDANCE WITH THE MANUFACTURER'S REQUIREMENTS.
BAR LENGTH = 16Y4") OR BAR CAN
o a
EXTEND BEYOND RAIL Y"±
FABRICATION TOLERANCE: ±Y4"
w
a
a
-PIPE 0
PLAN
FRONT
48"0 to 90"0 FITTING REINFORCEMENT
MAY BE REQUIRED BASED ON HEIGHT OF
COVER AND LIVE LOAD CONDITION
TYPICAL MANWAY DETAIL
NOT TO SCALE
o FLAT BAR AND REBAR: MILL
TOLERANCE APPLIES
TYP.
12" TYP.
CENTER TO CENTER %" HOLE w/ %" REBAR RUNG,
RUNG SPACING m WELD REBAR TO RUNG ON
OUTSIDE OF STEEL RAIL
0 2Y2" x %" FLAT BAR SIDE RAIL
PLAN SIDE
NOTES:
1. LADDERS CAN BE MADE IN 20'-0" STANDARD LENGTHS AND CUT TO FIT
2. ALL MATERIAL TO MEET ASTM A36
3. LADDER TO BE HOT DIPPED GALVANIZED PER ASTM A-123 AFTER
FABRICATION IS COMPLETE
STANDARD LADDER DETAIL
NOT TO SCALE
PART NO. HALAGVL16
PROVIDE MINIMUM OF 4 ATTACHMENT
ANGLES (2 ON EITHER SIDE OF LADDER RAIL)
TO CONNECT LADDER TO RISER EXTENSION
RISER w/ LADDER AND STEPS
IF EXTENSION IS REQUIRED
RISER w/ LADDER
AND STEPS
MAINLINE CMP
22/3 x Y2,5 x 1, 3 x 1, ETC.
NOTE:
THIS DRAWING IS INTENDED TO APPLY TO LADDERS
INSTALLED IN RISERS HAVING A DIAMETER OF 30" OR
LARGER. DUE TO SPACE CONSTRAINTS AND LIMITED
ACCESSIBILITY, THE PRACTICALITY AND SUITABILITY OF
UTILIZING RISERS SMALLER THAN 30" DIAMETER
AND/OR INCORPORATING LADDERS IN THESE SMALLER
DIAMETER RISERS SHOULD BE ADDRESSED BY THE
OWNER AND PROJECT ENGINEER
V-6"
MAX.
OPENING IN
___- PROTECTION _
tI-} I --- �t, �-t---- SLAB FOR
AC SS I
I I �ti oaf 1I
I
1
STANDARD STANDARD
REINFORCING, REINFORCING,
SEE TABLE SEE TABLE
ROUND OPTION PLAN VIEW
NOTES:
1. DESIGN IN ACCORDANCE WITH AASHTO, 17th
EDITION AND ACI 350.
2. DESIGN LOAD HS25.
3. EARTH COVER = V MAX.
4. CONCRETE STRENGTH = 4,000 psi
5. REINFORCING STEEL = ASTM A615, GRADE 60.
6. PROVIDE ADDITIONAL REINFORCING AROUND
OPENINGS EQUAL TO THE BARS INTERRUPTED,
HALF EACH SIDE. ADDITIONAL BARS TO BE IN THE
SAME PLANE.
'NOTE: WHEN RISER EXTENSIONS
ARE USED, THE PLANT SHOULD
CUT 3" FROM THE SIDE RAILS AS
SHOWN
"3" FROM BOTTOM OF LADDER
RAIL TO RISER JOINT
"3" FROM TOP OF LADDER
RAIL TO RISER JOINT
LADDER RAILS AND RUNGS
(2)4" FILLET WELDS 1" LONG
ATTACHMENT ANC
L5" x 3" xY4" x 16" LONG AT V-0"
MINIMUM OF 4 ANGLES P
SPACING. LONG LEG TO
LADDER SECTION, (2 EACH SIDE
PROJECT OUT, WELD TOP
LADDER) 6' MAX. SPACI
AND BOTTOM OF 3" LEG TO EACH
VERTICAL
CORRUGATION CREST
(THESE ANGLES SHOULD BE USED
FOR LARGER DIAMETER
MAINLINES WHERE ADDITIONAL
STEPS ARE NEEDED)
6" FROM RUNG TO
RISER JOINT
6" FROM RUNG TO
RISER JOINT
SECTION A -A
RISER LADDER DETAIL
NOT TO SCALE
RISER NORMALLY CMP
WITH 2%" x Yz'
CORRUGATIONS
(4)Y6" FILLET WELDS
FROM EACH ANGLE TO
CORRUGATION CREST
(2 WELD EACH SIDE)
L3" x 3" x %s'
5Y2 " LONG
V
4
CI
INTERRUPTED BAR
REPLACEMENT,
SEE NOTE 6.
SQUARE OPTION PLAN VIEW
7. TRIM OPENING WITH DIAGONAL #4 BARS, EXTEND BARS A
MINIMUM OF 12" BEYOND OPENING, BEND BARS AS REQUIRED
TO MAINTAIN BAR COVER.
8. PROTECTION SLAB AND ALL MATERIALS TO BE PROVIDED AND
INSTALLED BY CONTRACTOR.
9. DETAIL DESIGN BY DELTA ENGINEERS, ARCHITECTS AND LAND
SURVEYORS, ENDWELL, NY.
MANHOLE CAP DETAIL
NOT TO SCALE
(4)Y6" FILLET WELDS FROM
EACH ANGLE CORRUGA'
CREST (2 WELDS EACH £
(4) L3" x 3" x 3/16"
5Y2" LONG
(2) Y4"FILLET WELDS
1" LONG FROM EACH ANGLE
TO LADDER RAIL
LADDER RAILS
PLAN
G
-_A
- _
(4)Y,s' FILLET WELDS
FROM EACH ANGLE TO - - _
CORRUGATION CREST
(2 WELDS EACH SIDE)
5 "LONG Y -
ELEVATION
LADDER
AND RUI
SCOTT/R. CULLINSZ
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1 inch = 30 ft.
PROPOSED WALL / \ 89 8 / 85
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PROPOSED WALL // �� / 7 CHL�IN - SEE SH I 22 (UE)Lic�No
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PROPOSED SWM FOREST & o f 506.83 FFE / LOT 37 I 502.00 AR
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PROPOSED WALL / 85 So / V / / / / / - - - I� I I I l 202198
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PROPOSED WALL /
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/, // / SHEET NO.
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