HomeMy WebLinkAboutWPO201900045 Plan - VSMP WPO VSMP 2019-10-03Erosion and Sediment Control Narrative For:
LIBERTY HALL FARM
2698 LIBERTY HALL LANE
TM 43 PARCEL 24A
ALBEMARLE COUNTY, VA
HUC: Mechums River - Beaver Creek 020802040102
LAT: 38' 06' 38"N LONG: 78" 33' 58'"W
Project Description: The proposed work involves the construction of a new
residence, driveway and associated site grading required to create a new
building pad for the house and to create open posture. The property is located
on the north side of Garth Rd., about 0.62 mile west of Free Union Rd. The
total area of the parcel is 150 acres. The total on -site disturbed area is
approximately 5.46 acres. Work is to be completed in Fall of 2019.
Erosion control measures shown will protect the stream and property below
from receiving silt -laden runoff.
Existing Site Conditions: The project site area is in a mix open pasture and
fully wooded hill side and generally slopes to the north at 10 to 25%. The pre
and post drainage patterns will be nearly the some. All existing structures will
be removed.
Adjacent Property: The property is surrounded by other large acreage parcels
and wooded areas as well as small rural single-family lots.
Off -site Areas: No off -site areas will be involved in this project.
Soils: 366-Hayesville loam, loamy, 0.28 K-Factor, Group B soil
Critical Erosion Areas: There are no critical erosion areas in the project area.
Soil Stockpiles: A temporary soil stockpile will be utilized during the excavation
to preserve topsoil for final grading around the house and driveway.
Erosion and Sediment Control Measures:
Unless otherwise indicated, all vegetative and structural erosion and sediment
control practices will be constructed and maintained according to minimum
standards and specifications of the Virginia Erosion and Sediment Control
Handbook. Additional measures may be required during construction by the
Erosion Control Inspector, as needed.
Structural Practices:
Construction Entrance: (CE) 8.02 (To be installed where construction site traffic exits the project
area, to remove soil from tires prior to travel on public roads. The contractor shall clean and
maintain the travel -way as required to keep soil from washing into unprotected areas and to
provide a safe surface for pedestrian and vehicular access. The Construction Entrance will be
located about 0.5 mile from the public right of way. Once the building is erected, all adjacent
areas will he stabilized and the construction entrance will no longer be necessary.)
Silt Fence: (SF) 3.05 Silt fence (wire -supported) shall be constaicted along the lower Limit of graded areas.
(To be installed as shown on the plan, down -gradient of disturbed areas created by the proposed
work, and above the proposed excavation to prevent up -gradient runoffffrom crossing disturbed
areas. )
Culvert Inlet Protection: (CIP) 8.08 A sediment filter located at the inlet to storm sewer culverts which
prevents sediment from entering, accumulating in, and being transferred by the culvert. It also provides
erosion control at culverts during the phase of a project where elevations and drainage patterns are
changing, causing original control measures to be ineffective. (To be installed at culvert inlet irnrnediately
after installation)
Gudet Protection (OP) 3.18 The installation of riprap charnel sections storm drain outlets to reduce
erosion and under -cutting from scouring at. outlets and to reduce flow velocities before storrnwater enters
receiving channels below these outlets. (To be installed at the new culverts. ❑
Level Spreader (IS) 3.21 An outlet for dikes and diversions consisting of an excavated depression
constructed at zero grade across a slope to convert conceri trated, sediment free runoff to sheet flow and
release itinto areas of undisturbed soil which is stabilized by existing vegetation. (To be installed at the end
of the roof'drains and culvert to disperse concentrated runoff )
Permanent Seeding (PS) 3.32 Establishment of perennial vegetative cover by planting seed where
permanent, long-lived vegetative cover is needed on fine -graded areas. (Permanent seeding will be
provided on all disturbed areas designated to be landscaped on the site plan within 7 days of
final grading.)
Mulching (ML>) 3.35 Application of plant residues to distuurbed surfaces to prevent erosion and reduce
overland flow. Apply to all seeded areas. Refer to Table 3.35-A on Sheet C-3.3 for application rates. (7 o
be installed along with Permanent Seeding)
Blarrketing/Matting (B/M) 8.86 Installation of soil stabilization matting on a prepared planting of a steep
slope. (To be installed along driveway ditch inhere shovvrt on ttie plans.)
Vegetative Practices:
Temporary Seeding 3.31: All areas disturbed by construction that will not be
brought to final grade for a period of more than 14 days, will be stabilized
by establishing a good stand of grass.
Lime 3.31: Unless it is known that the site will remain undisturbed for
many months, lime is not necessary. If necessary, the amount will be
determined by Soil Test, or 3 tons per acre of pulverized agricultural
limestone, uniformly applied to surface to be seeded during seedbed
preparation and incorporated into the top 2-4 inches of soil.
Fertilizer 3.31: 600 pounds per acre of 10-20-10 or equivalent, uniformly
applied to the surface to be seeded during seedbed preparation and
incorporated into the top 2-4 inches of soil.
Surface roughening 3.31: Where disturbed soils have been compacted,
loosen soils by discing, raking, or whatever acceptable means available to
receive seed.
Seed 3.31: Seed shall be broadcast evenly and planted from X to X inch
deep. Seasonal seed selection shall be as follows:
Sept. 1 - Feb. ,15: 50/50 Mix of Annual Rye and Winter Rye, 50-100
Ib/ac.
Feb. 16 - April 30: use Annual Rye, 60-100 lb/cc.
May 1 - Aug. 31: use German Millet, 50 Ib/ac.
Areas which fail to establish vegetative cover adequate to prevent rill erosion
will be reseeded as soon as such areas are identified.
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Management Strategies: Construction should be sequenced so that grading
operations can begin and end as quickly as possible. Areas that are not to
be disturbed shall be clearly marked by the placement of the erosion control
measures prior to construction. The job superintendent shall be responsible for
the installation and maintenance of all erosion and sediment measures.
Where construction vehicle access 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
transported to a sediment control disposal area. Street washing shall be
®flowed only after sediment is removed in this manner.
Stabilization of Denuded Areas and Soil Stockpiles: Permanent or temporary
soil stabilization must be applied to denuded areas within 7 days after final
grade is reached on any portion of the site. Temporary soil stabilization shall
be applied within 7 days to denuded areas which may not be at final grade
but will remain dormant (undisturbed) for longer than 14 days. Permanent
stabilization shall be applied to areas that are to be left dormant for more
than one year.
Soil stabilization refers to measures that protect soil from the erosive forces
of raindrop impact and flowing water. Applicable practices include vegetative
establishment, mulching and the early application of gravel base on areas to
be paved. Soil stabilization nidasures shaaft! be seledf d to be ap IfIdpriate far
the time of year, site conditions and estimated duration of use.
Timing and Stabilization of Sediment Trapping Measures:
Sediment barriers and traps, perimeter dikes, sediment barriers and other
measures intended to trap sediment shall be constructed as a first step in
any land disturbing activity and shall be made functional before upslope land
disturbance takes place. Stabilization measures shall be applied to earthen
structures such as dams, dikes, and diversions immediately after installation.
Disposal of Temporary Measures: All temporary erosion and sediment control
measures shall be removed within 30 days after final site stabilization or after
the temporary measures are no longer needed, unless otherwise authorized by
the local program administrator.
Trapped sediment and the disturbed soil areas resulting from the disposition of
temporary measures shall be removed and replaced with suitably compacted
soils, or, where applicable, permanently stabilized to prevent further erosion and
edimentation.
Maintenanc': All erosion and sediment control structures and systems shall be
maintained, inspected, and repaired weekly and after each significant rainfall or
cis needed to insure continued performance of their intended function. Any
damage to structural measures shall be repaired immediately.
S'Mt fence ;hall be inspected after every rainfall event and at least daily during
pirolonged rainfall, as well as at the end of every working day, with any
neecessary repairs made immediately. Accumulated sediment shall be removed
aind disposed of as it becomes necessary, or when deposits have accumulated
to one-half of the above ground fence height. All undercutting or erosion shall
be repaired immediately. the contractor shall follow all manufacturers
recommendations for installation, maintenance, replacement, and repair.
damages caused by construction traffic or other activity must be repaired
before the end of each working day.
AJI seeded areas are to be checked to insure a good stand is maintained.
Gteneral construction notes for Erasion, ar<d.Se"dim�nt..Con.tral=.�-lams
1., The plan approving authority must be notified one week prior to the
p►re----construction conference, one week prior to the commencement of land
diisturbing activity, and one week prior to the final inspection.
Z. All erosion and sediment control measures will be constructed and
maintained according to minimum standards and specifications of the Virginia
Errosion and Sediment Control Handbook and Virginia Regulations VR 625-02-00
Errosion and Sediment Control Regulations.
3.. All erosion and sediment control measures are to be placed prior to or as
the first step in clearing.
4.. A copy of the approved erosion and sediment control plan shall be
maintained on the site at all times.
5.. Prior to commencing land disturbing activities in areas other than indicated
on these plans (including, but not limited to, off -site borrow or waste areas),
the contractor shall submit a supplementary erosion control plan to the owner
for review and approval by the plan approving authority.
6., The contractor is responsible for installation of any additional erosion control
measures necessary to prevent erosion and sedimentation as determined by the
plan approving authority.
7., All disturbed areas are to drain to approved sediment control measures at
alll times during land disturbing activities and during site development until final
stabilization is achieved.
B.. During dewatering operations, water will be pumped into an approved filtering
device.
9.. The contractor shall inspect all erosion control measures periodically and
after each runoff producing rainfall event. Any necessary repairs or cleanup to
miaintain the effectiveness of the erosion control devices shall be made
immediately.
10. All fill material to be taken from an approved, designated borrow area.
11. All waste materials shall be taken to an approved waste area. Earth fill
shall be inert materials only, free of roots, stumps, wood, rubbish, and other
debris.
12. Borrow, fill or waste activity involving industrial -type power equipment shall
be limited to the hours of 7:00am to 9:00pm.
13. Borrow, fill or waste activity shall be conducted in a safe manner than
maintains lateral support, or order to minimize any hazard to persons, physical
damage to adjacent land and improvements, and damage to any public street
because o slides, sinking, or collapse.
14-. Temporary stabilization shall be temporary seeding and mulching. Seeding is
to be at 75lbs/acre, and in the months of September to February to consist a
50)/50 mix of Annual Ryegrass and Cereal Winter Rye, or in March and April to
consist of Annual Rye, or May through August to consist of German Millet.
Steraw mulch is to be applied at 80lbs/100sf.
Alternatives are subject to approved by the erosion control inspector.
15,. Permanent stabilization shall be lime and fertilizer, permanent seeding, and
mulch. Agricultural grade limestone shall be applied at 90lbs/1000sf,
incorporated into the top 4-6 inches of soil. Fertilizer shall be applied at
10100lbs/acre and consist of a 10-20-10 nutrient mix. Permanent seeding shall
be applied at 180lbs/acre and consist of 95% Kentucky 31 or Tall Fescue and
0-5% Perennial Ryegrass or Kentucky Bluegrass. Straw mulch is to be
applied at 80lbs/100sf. Alternatives are subject to approved by the County
erasion control inspector.
16. Maintenance: All measures are to be inspected weekly and after each
rainfall. Any damage or clogging to structural measures is to be repair
immediately. Silt traps are to be cleaned When 50% of the wet storage volume
is filled with sediment. All seeded areas are to be reseeded when necessary to
achieve a good stand of grass. Silt fence and diversion dykes which are
collecting sediment to half their height must be cleaned and repaired
immediately.
17. All temporary erosion and sediment control measures are to be removed
within 15 days of final site stabilization, when measures are no longer needed,
subject to approval by the Coutity ord`d on control inspector.
18. Permanent vegetatfi6n shall be installed on all denuded areas within nine (9)
months after the date the land disturbing activity commenced.
MINIMUM STANDARDS_
Permanent or temporary soil stabilization must be applied to denuded
areas within seven days after final grade is reached on any portion of the
site. Temporary soil stabilization shall be applied within seven days to
denuded areas that may not be at final grade but will remain dormant
(undisturbed) for (longer than 15 days. Permanent stabilization shall be
applied to areas that are to be left dormant for more than one year. Soil
stabilization refers -to measures which protect soil from the erosive forces of
r ifidrep irrfpdct and floWil g water. Applicable practices include vegetative
establishment, mulching, dhd the early application of gravel base on areas to
be paved. Soil stabilization measures should be selected to be appropriate
for the time of year, site conditions and estimated duration of use.
MS-2 During construcition of the project, soil stockpiles and borrow areas shall
be stabilized or protected with sediment trapping measures. The applicant is
responsible for the temporary protection and permanent stabilization of all
soil stockpiles on site as well as barrow areas and soil intentionally
transported from the project site.
MS-3 A permanent vegetative cover shall be established on denuded areas not
e
otherwise permanenitly stabilized. Permanent vegetation shall not be
considered established until a ground cover is achieved that, is uniform,
mature enough to ,survive and will inhibit erasion.
-S Sediment basins and trap, , pefiffteter dikes, sediment barriers and other
measures ►fttofidd l to tridp sed eft shall be constructed as a first step in
any land -disturbing activity and shall be made functional before upslope land
disturbance takes place.
® Stabilization modsures shall be applied to earthen structures such as
dams, dikes, traps, basins and diversions immediately after installation.
M5--6 Surface runoff from disturbed areas that is comprised of flow from
drainage areas greater than or equal to three acres shall be controlled by a
sediment basin. The sediment basin shall be designed and constructed to
accommodate the anticipated sediment loading from the land disturbing
activity. The outfalll device or system design shall take into account the
total drainage area flowing through the disturbed area to be served by the
basin.
M.S-- Cut and fill slopes shall be constructed in a manner that will minimize
- erosf6h. Sfa �fs tlfifft drd fdUWd to be droding eX669gively within one year of
permanent stabilization si dll be provided with additional slope stabilizing
measures until the problem is corrected.
MS-8 Concentrated rurnoff shall not flow down cut or fill slopes unless
contained within an adequate temporary or permanent channel, flume, or
slope drain structure.
MS-9 Whenever water seeps from a slope face, adequate drainage or other
protection shall be (provided.
MS-10 All storm sewer inlets that are made operable during construction shall
be protected so that sediment -laden water cannot enter the conveyance
system without first: being filtered or otherwise treated to remove sediment.
MS-1.1 Before r►owly comstrudted storrnwbter conveyance channels are made
operational, ad'equatte outlet protection and any required temporary or
permanent channel lining shall be ihstalled in both the conveyance channel
and receiving channel.
MS-12 through 15 - Not applicable, no live watercourses.
MS-16 Underground utility lines sllall be installed in accordance with the
following standards in addition to other applicable criteria:
a. No more than 5(00 linear feet of trench may be opened at one
time.
b. Excavated materi+al shall be placed on the uphill side of trenches.
c. Effluent from dewvatering operations shall be filtered or passed through an
approved sediment trapping device, or both, and discharged in a manner
that does not advlersely affect flowing streams or off -site property.
d. Restab►Rzation shrill be a coMplished in accordance with these regulations.
e. Applicable safety regulations shall be complied with.
Where construction vehicle access routes intersect paved public roads,
provisions shall be imade 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 every four hours.
Sediment shall be removed from the roads by shoveling or sweeping and
transported to a sediment control disposal area. Street washing shall be
allowed only after sediment is removed in this manner.
MS-18 All temporary erosion and sediment control measures shall be removed
within 30 days after final site stabilization or after the temporary measures
are no longer needed, unless otherwise authorized by the local program
administrator. Trapped sediment and the disturbed soil areas resulting from
the disposition of temporary measures shall be permanently stabilized to
prevent further erasion and sedimentation.
Drainage Area A is 160 aares. The increase in impervious area is less than
1 % of the total watershed area. (9VAC25-870-66 C-3-a).
Drainage Area 8 is 638 acres and slightly B is reduced in size by 0.4 acres.
Concentrated flows at the driveway ditch and roof drains are routed to level
spreaders to create sheetflow condition. The increase in impervious area is less
than 1 % of the total watershed area. (9VAC25-870-66 C-3-a).
ICI N ITS'
SCALE: 1 "=2,000 FT.
Pill
_ _ •►
ES-2: THE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE WEEK
PRIOR TO THE PRE- CONSTRUCTION CONFERENCE, ONE WEEK PRIOR TO
THE COMMENCEMENT OF LAND DISTURBING ACTIVITY, AND ONE WEEK
PRIOR TO THE FINAL INSPECTION.
ES-3: ALL EROSION AND SEDIMENT COINTROL MEASURES ARE TO BE
PLACED PRIOR TO OR AS THE FIRST SIFEP IN CLEARING.
ES-4: A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL
PLAN SHALL BE MAINTAINED ON THE SITE AT ALL TIMES.
ES-5: PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS
OTHER THAN INDICATED ON THESE PLANS (INCLUDING, BUT NOT LIMITED
TO, OFF -SITE BORROW OR WASTE AREAS), THE CONTRACTOR SHALL
SUBMIT A SUPPLEMENTARY EROSION CONTROL PLAN TO THE OWNER FOR
REVIEW AND APPROVAL BY THE PLAN APPROVING AUTHORITY.
ES-6: THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY
ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT
EROSION AND SEDIMENTATION AS I)MRIMIINED BY THE PLAN APPROVING
AUTHORITY.
ES-7: ALL DISTURBED ARRAS ARE TO DRAIN TO APPROVED SEDIMENT
CONTROL MEASURES AT ALL TIMES DURING LAND DISTURBING ACTIVITIES
AND DURING SITE DEVELOPMENT UNTIL FINAL STABILIZATION IS ACHIEVED.
ES-8: DURING DEWATERING OPERATIONS, WATER WILL BE PWAPED INTO
AN APPROVED FILTERING DEVICE.
ES-9: THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL
MEASURES PERIODICALLY AND AFTER EACH RUNOFF®PRODUCING RAINFALL
EVENT. ANY NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE
EFFECTIVENESS OF THE EROSION CONTROL DEVICES SHALL BE MADE
IMMEDIATELY.
THE RLD IS RESPONSIBLE FOR ONGOING MAINTENANCE AND OPERATION
OF THE E&SC PLAN.
FUR TAE P1RPOSES OF PLAN _A
. j IS P.E.
B.
SEQUENCE OF CONSTRUCTION
1. Install Construction Entrance and sillt fence where shown on the
plan.
2. Excavate and grade areas as shown in the proposed house site
area.
3. If the site will remain dormant for more than 15 days, provide
temporary seeding measures to stalbilize the surface.
4. When building construction is compllete, completely distribute the
temporary topsoil stockpile as necessary to complete final grading.
5. Apply sod or mulch and permanentlly seed all permanently stabilized
areas.
6. Remove silt fence and check dams after all disturbed areas are
stabilized, with County Inspector approval.
APPROVED
- D
by the Albemarle County
Community Qevel dent Department
File
OWNER/DEVELOPER.-
LIBERTY HALL FARM HOLDINGS LLC
2340 FREE UNION FARM RD
FREE UNION, VA 22940
LOCATION:
2698 LIBERTY HALL LANE
TM 43 PARCEL 24-A
ALBEMARLE COUNTY, VA
MAGISTERIAL DISTRICT: JACK JOUETT
PLAN PREPARED BY:
B. CLARK GATHRIGHT, P.E.
100 1OTH ST NE SUITE 200
CHAR LOTTESVILLE, VA 22902
TOTAL SITE AREA: 150.0
ZONING: RA
DATUM REFERENCE FOR ELEVATION: NAVD88
SOURCE OF TOPOGRAPHY:
ROGER W. RAY & ASSOC.,INC. - MAY 1, 2017
NEW RESIDENCE AND DRIVEWAY
FRONT. FT.
SIDE:
REAR: 35 FT.
TOTAL EXISTING IMPERVIOUS SURFACE: 1.57 ACRES
TOTAL NEW IMPERVIOUS SURFACE: 1.36 ACRES
DISTURBED AREA: 5.46 ACRES
EXISTING IMPERVIOUS SURFACE: 1.00 ACRE
NEW IMPERVIOUS SURFACE: 0.78 ACRES
WATER QUANTITY: LESS THAN 1 % OF THE TOTAL
WATERSHED (9VAC25-870-66 C-3-A)
INCREASE IN SHEETFLOW VOLUME WILL NOT CAUSE
OR CONTRIBUTE TO EROSION, SEDIMENTATION, OR
FLOODING OF DOWN GRADIENT (9VAC25-870-66 D)
WATER QUALITY: 0.46 LB./YR NUTRIENT CREDIT
PURCHASE
- x - REQUIRED
CRITICAL SLOPES: NO CRITICAL SLOPES IN THE
PROJECT AREA.
TIMING OF CONSTRUCTION: SUMMER 2019
1 T-1.0
TITLE SHEET & EROSION AND SEDIMENT
CONTROL NARRATIVE
2 C-1.0
OVERALL PROPERTY PLAN & DEMOLITION
PLAN
3 C-1.1
EROSION & SEDIMENT CONTROL PLAN -
HOUSE AREA
4 C- 1.2
EROSION & SEDIMENT CONTROL PLAN -
MEADOW AREA
5 C-1.3
EROSION & SEDIMENT CONTROL DETAILS
6 C-1.4
WATER QUALITY CALCULATIONS & STORMWATER CALCULATIONS
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CONSTRUCTION OF A SILT FENCE
(WIR11 WIRE SUPPORT) LEVEL SPREADER
1. SET POSTS AND EXCAVATE A 4"X4" 2. STAPLE WIRE FENCING TO THE POSTS.
TRENCH UPSLOPE ALONG THE LINE
OF POSTS.
CROSS SECTION
REINFORCED �
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JUTE, OR EXCELSIOR LENGTH: 13'
OR EQUIVALENT
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3. ATTACH THE FILTER FABRIC TO THE WIRE 4. BACKFILL AND COMPACT THE LEVEL SPREADER YY I T H t+ E G ETAT E D LIP INSERT CORNER STAKE TIE DOWNS ui
FENCE AND EXTEND IT INTO THE TRENCH. EXCAVATED SOIL.
TYPICAL OF 4 CORNERS
A A (4 CES CAPACITY) NOTES:
.r' r CROSS SECTION 1. THE WASHOUT SHALL BE INSTALLED PRIOR TO ANY USING MATERIALS THAT REQUIRE E5 'T1_ n!�
,r — _ — 6, WASHOUT ON THIS PROJECT,
r sue% 24�� -2�� 2. AS NECESS
ARY, SIGNS SHALL BE PLACED THROUGHOUT THE SITE TO INDICATE THE
®^" VDOT3, #357, #5,56 OR
57 COARSE AGGREGATE IN LOCATION OF THE WASHOUT.
� VARIABLE (MIN. 7')
Jill J PIPE OUTLET TO FLAT GALVANIZED WIRE MESH BASKET SECURE WIRE MESH TO TIMBER
b AREA WITH NO DEFINED 3. THE WASHOUT AREA WILL BE REPLACED AS NECESSARY TO MAINTAIN CAPACITY FOR
CHANNEL * FILTER CLOTH 6X6 TREATED TIMBER LIQUID WASTE.
- - PrLAN VIEW -` 6" MIN.
WIRE TO GROUND 4. WASHOUT RESIDUE SHALL BE REMOVED FROM THE SITE AND DISPOSED OF AT AN
r m F� - WITH WIRE STAPLES
_ 5 REBAR TO -I I APPROVED WASTE FACILITY.
dso_6" SECURE TIMBER
III L __6 CI_. 1 III=1I 1=1 1=1 I 1=1I 1=1 1=1 I1=1I 1=1 I1=1I i- I1= _ _ _ i 1=1 I1=1I I 6. Do NOT WASHOUT INTO STORM DRAINS, OPEN DITCHES, STREETS, OR STREAMS.
_ - - I— I= -III-IIII-1 I -III -III -III -III -III -III -I - -I 1=1 I1= I_I I I_I
II I1=III-1I-I I1=1I I-III-III-�=1I1=III-III I1=1I-III- -I I1=1 s, AVOID DUMPING ExcEss CONCRETE IN NON-aEstcNATED DUMPING AREAS.
EXTENSION OF FABRIC AND WIRE INTO THE TRENCH. 0 :. d=g 7' MIN. 3' = I= = = III= = =�= = = I = = = I
a UNDISTURBED� Q�
La =6 solL I -1 ;III III- III I = -III- - F�1 OR 7. LOCATE WASHOUT AT LEAST 50' (15 METERS) FROM STORM DRAIN, OPEN DITCHES, OR
FILTER BODIES.
FABRIC C}'
SECTION A -A FL TER CLOTH ISEY IN 6"-9"; ItECo101PIiDEI1 FOR ENTIRE PE I�
MIN' 6' 8. THE WASHOUT SHALL BE USED ONLY FOR NON -HAZARDOUS WASTES.
� Q. CLARK GATHRIGHT I--{
Lic. No 6, 0�
®III I. WIRE LEVEL SPREADER WITH RIGID LIP
NOTES: 9. APRON LINLNG SAY BE RIPRAP, GROUTED RIPRAP, GABION
- BASKET, OR CONCRETE. * MIN. PHYSICAL REQUIREMENTS OF FILTER CLOTH NOTED IN STD. & SPEC. 3.19, RIPRAP �S
2. La IS THE LENGTH OF THE RIPRAP APRON AS CALCULATEDPVC
SOURCE: Adapted from Installation of Straw and Fabric Filter Barriers for Sediment Control, PIATE. '3.OD-1 USING PLATES 3.18-3 AND 3.13-4. �A�I���T I
p SOURCE: VA. DSWC AND N.C. Erosion and Sediment Control Plann»> and Design b4anu�1 PLATE: 3.21-2 Bolse, Idaho S�4I0�
Sherwood & Tyant 3. d = 1.5 TINS TIC MAXIMUM STONE DIAMETER, Dt1T NOT CONTAINMENT 2t18-890 03�3 NAL
LESS THAN 6 INCHES. Maintenance
1. Cledh eet�i cents out cif level reader. SPECIFICATIONS ��ho outpak.com
Source: Va. DS'�iC �' Mete 3.�--.1 p
2. Vegetative density shall exceed 90% cower in
the boundary zone or grass filter.
SILT FENCE SET IL OUTLET PROTECTION DETAIL plommoommmonmp3 LEVEL SPR A C�ETIL CET S CUT ET IL
SCALE: NONE C-1 .3j SCALE: NONE 7e3 SCALE: NONE
7
C — 1 "3 SCALE: NONE
_V)
LO
T ONE, C ON. Sy T. UC' TI �7N NT NCh-,1 �� ��� I �b� jI
T A 1 rJORAEA T. .. T — I
COI STRUt-TION (SOIL S' T I �ZA rP T ON LANKE T) �I
AuC sk1-2-A ASPHALT TO
UO RSE
70' MIN. EXISTING FIN/ 161 I - Y TALL �S �� 1 B� OD
I I•°
A PAVEMENT �ti1iW�EIIT
11=III III III=III IIIJI' ANCHOR SLOT
-III III-11=III-III > > ��� '
k { [}
NOTES
FILTER CLOTH 6" MIN A MOUNTABLE BERM (OPTIONAL) APPROXIMATELY 200 STAPLES REQUIRED
��qq
R P / ��, PER 100 SQ. YDS. OF MATERIAL ROLL I�
SIDE E LEp� VATION O N CHECKR
RSLOTS TO BE B14RIEDSLOTS, JUNNLOTS 6 0 12".
EXISTING GROUND /y 'U)
� ,��, tY(�N 12" MAX. 4:1 OR FLATTER
9TO ,E 6" MAX. STEEPER THAN 4:1 s
70' MIN. (lid}
�:C�'NSTRUCTIO � ASPFIALT PAVED JUNCTION SLOT ice— �°
EDGE AND END JOINTS 0
B LLM
C''0f,C,
WASHRACK I IN. �.. CHECK SLOT TO BE SNUGLY ABUTTED(OPTIONAL) (JUTE MESH WILL HAVE
u II -II lu II g TERMINAL FOLD STAPLED LAP JOINT IN
`"" E:�I�T$�'�C LIEU OF EDGE JOINT)
1 27. dT LAP JOINT 2" MIN. woo
2x,' �k+1t t_ �- (JUTE MESH ONLY i I I2' IN, (� ] C - q- 1 TAMP FIRMLY )
III ,�' I EXISTING .� ,.,)
PAVEMENT a � L! �ANCHOR SLOT
I I
ER
� 3' MAX.MA EPERTHAN 4:1 I I I ENDWALL
2" 6" TO 12" gzj LU
YDDT #1 POSITIVE DRAINAGE 10' MIN. {TI FUL: 4IEtThI A
53
COURSE AGGREGATE TO SEDIMENT I MUSAND�� SEDIIYE� 1
TRAPPING DEVICENGRESS RAPPING DEVICE I
PFR4f lON
* MUST EXTEND FULL WIDTH OF
OPERATION AND EGRESS PLANVIEW N 4"
CHECK SLOT
TOE OF FILL CULVERT
12' MIN. CHECK SLOT I I I I I I i I i I
---1';2` lIN4 I'oAvE tjr?AENAOE 2, KIRMLY
��� 1\113,� 3" MIN. TO , gEOIa'r bW VAR. VAR.
�� � � � �� �" I � ---- Uict T❑ s� LAN VIEW
J E1�1 a �®
6 u b o o MIN. - •, , 6" TO 12 M I P �I I L
„III=1I1=11- - "" `� .,. , _�: • � r � ,, �P°��I�tNO rl� �
it r O. ®m m
°4�0�-�..: STAPLING DIAGRAM m o ®o
FILTER CLOTH 11 � � � � ''>~ �` �'� � � � *
I
SECTION A -A FILTER C'LI`T.T%'I STAPLE FORMED FROM No.11 STEEL WIRE. CHECK SLOTS AT MIN.
8" STAPLE MIN. LENGTH FOR SANDY SOIL. NO C-C INTERVALS;
SECTION LU
A 6" STAPLE MIN. LENGTH FOR OTHER SOIL. "NOT REQIO WITH ALL
6'-7" -COMBINATION "BLANKETS
C JUNCTION SLOT TAMP ��_-� _ _Qo-_- - - �� - REVISIONS:
TERMINAL FOLD q
11 1lLI111137 Water tili3' i7 1 tITC!! tllla; t'IJe ill tilite'r1.�A Atli a IIIhift 111111 filch Wll�oek FIRMLY �— � -�- 0$-26-19
U .. � �� - TAMP FIRMLY
lauk �'r►! e 11 : ! ' �Ma 8 a A1igse NVKi di.a deter 4,7 .I ck es. #or adle ate 12
Al 4" 6 Q8-23-19
' 5li w ter II1Llst hi e c•aiij d! away f1 �FII1 lice ,eI2�1'i1tl�.� tdf. '�ui 2' z' —
��'o� jt j�p'ove _s-e, 1lIg Veal td? 1' tliON e €t n 04L A_tI S'odi1Ti10# 40l, I �1e,17I woitedt: C'CiIt1 T 12' o TOE OF FILL
r� li�l�';{ti�dllcdle:a ^ 'celli�°�cs�.
REINFORCED CONCRETE y - DRAIN SPACE
SECTION P®D AYE,' A A'' SILT FENCE
NO SCALE DATE:
SOURCE: ADAPTED from 1983 Maryland Standards for Soil erosion and Sediment Control, and Va. DSWC Plate 1.02-1 SOURCE: VD®T ROAD AND BRIDGE STANDARDS PLATES 3,36-2
IF REQUIRED BY COUNTY E&SC INSPECTOR FLOW 0®®1
TRUCIN TR CE DETAILS } � S _bSI,L ST_ILIZTION LANKE DETAIL 7 CULVERT INLET PROTECTION DETAIL DRAWING NUMBER:
—1 "3 SCALE: NONE C-1 .3 SCALE: NONE
C-1 ®� SCALE: NONE
SHEET 5 OF 6
Name.Project
Linear Development Project?
Site Information
Pre-RmDeuekzonnentLand Cover (acres)
Linear project? No
Land cover areas entered correctly?
rotal disturbed area entered?
,Post -Development Land Cover (acres)
A Soils
B Soils
C Soils
D Soils
Totals
�Forest/Open Space (acres) undisturbed
2rotected forest/open space or reforested tand;�:i::�
0
lManaged Turf (acres) disturbed, graded for
!yards or other turf to be mowed/managed
Impervious Cover (acres)
A.
T9Lmod Reduction Required (lb/wr)
Nitrogen Lo;ads (informational Purposes Only)
Final Post-Developmem:TN Load
(Post -Re Development & New
*-kOAD REDUCTION MET BYM_46|A/YRNUTRIENT CREDIT PURCHASE
LEVEL SPREADER 1
LOCATION
IMP AREAS
GRAVEL
OTHER
3043SF 0.08AC.
S.F. AC.
2686 0.08
0.00
957 0.02
0.08
t= 6 min -
STORM
LEVEL SPREADER 2
15712 SF
0.36 AC.
LOCATION
S.F.
AC.
IMP AREAS
5905
0.14
PERM PAVER
0.00
0.36
� t=
STORM
C
CA
0.9
0.06
0.7
0.00
(l3
0.01
C
CA
0.9
0.12
0.3
0.00
0.3
0.07
0.19
5 min-
i
LEVEL SPREADER 3
24432SF
0.58AC.
LOCATION
S.F.
AC.
C
CA
PERM PAVER
080
0.3
0.00
OTHER
18150
0.42
0�3
0.18
0.56
0.25
f= 5min.
CULVERT
���
LOCATION
24432SF
0.56AC.
S.F.
AC'
6282
0.14
00
18150
O/42
0.56
C
CA
0.9
0.13
0.3
0.00
0.3
0.13
CULVERT
Diameter: 1.00ft
Velocity: 5.89foo
Slope: O.O288ft/ft
Flow Area: O.9lsf
W1annin0'nn:U.U1]
Critical Slope: [iOUG6ft/ft
Discharge: 1.81cfs
Critical Depth: 0.57ft
Depth: O.41ft
Percent Full: 41.43Y6
DITCHI
LOCATION
19076 SF
S.F.
0.44 AC.
AC.
C
CA
OAT
0.19
DITCH
L1Side Slope: 3.00:1 (H:V)
Velocity: I44fpn
RtSide Slope: 3.00:1 /H:V1
Flow Area: 0.40sf
Menp|n8'sn:O1BO
Flow Top Width: 2.19ft
Channel Slope: 0,050Oft/ft
Wetted Perimeter: I31ft
Depth: 0.36ft
Critical Depth: 0.421t
Discharge: 1.37 ds
Critical Slope: O.O237ft/ft