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TMP 62D - t A
NO3'04'55 "W
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N/F Riuerrun Property
(Parcel 2 Per deed)
5.30'
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DB 3936 -PG 348
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TMP 82D-07 -A
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DOM. PROJECT NO: 10.0171
INDEX TITLE:
SHEET NO: 1 of 17
DATE: 02/28/12
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DOM. PROJECT NO: 10.0171
INDEX TITLE:
SHEET NO: 1 of 17
DATE: 02/28/12
SITE DATA &
GENERAL NOTES
ABBREVIATIONS
LEGEND
SITE DATA
0 (PARCELS 1A. A. & 1661:
GENERAL CONSTRUCTION NOTES:
GENERAL
EXIST
PROP
DESCRIPTION
EXIST PROP
DESCRIPTION
ROCK CREEK PROPERTIES
1. Prior to any construction within any existing public right-of-way, including connection to
ARAN ABANDON(ED)
MAX MAXIMUM .....................................
PROPERTY LINE
-9
X 12 TC
TOP OF CURB ELEVATION
170 SOUTH PANTOPS DRIVE
any existing road, a permit shall be obtained from the Virginia Department of
C;
Z
CHARLOTTESVILLE, VA 22903
Transportation (VDOT). This plan as drawn may not accurately reflect the requirements of
ADJ ADJUST
MIN MINIMUM ..........
ADJACENT PROPERTY LINE
X 125 BC
TION
BOTTOM OF CURB ELEVATION
the permit. Where any discrepancies occur the requirements of the permit shall govern.
•
•
DEVELOPER:
2. All materials and construction methods shall conform to current specifications and
AHD AHEAD
MON MONUMENT CONCRETE .... ...
VACATED PROPERTY LINE
X 125 FL
FLOW LINE ELEVATION
ROCK CREEK PROPERTIES
standards of VDOT unless otherwise noted.
3. Erosion and siltation control measures shall be provided in accordance with the approved
APRX APPROXIMATE
NIC NOT IN CONTRACT
•o
4
170 SOUTH PANTOPS DRIVE
erosion control plan and shall be installed prior to any clearing, grading or other
BC BACK OF CURB
...........
N TS NOT TO SCALE
EASEMENT
x 125 EOP
EDGE OF PAVEMENT ELEVATION
CHARLOTTESVILLE, VA 22903
construction.
.............. . .............
BUILDING SETBACK
X 125
SPOT ELEVATION
4. All slopes and disturbed areas are to be fertilized, seeded and mulched.
BFE BASEMENT FLOOR ELEVATION
OC ON CENTER
•
Z
Z
LEGAL REFERENCE & SOURCE OF TIRE-
5. The maximum allowable slope is 2:1 (horizontal: vertical). Where reasonably obtainable,
.......... ... . . .
PARKING SETBACK
x 125 TW
TOP OF WALL ELEVATION
TAX MAP 62, SECTION D, PARCEL 1A- DB 3991-583
lesser slopes of 3:1 or better are to be achieved.
BIT BITUMINOUS
OH OVERHEAD
TAX MAP 62F, PARCEL A: DB 3991-583
6. Paved, rip-rap or stabilization mat lined ditch may be required when in the opinion of the
PQ
ZO
ZONING LINE
X 125 BW
BOTTOM OF WALL ELEVATION
TAX MAP 61, PARCEL 166: DB 3991-503
County Engineer, or designee, it is deemed necessary in order to stabilize a drainage
BK BACK
PE POLYETHYLENE
channel.
7. All traffic control signs shall conform with the Virginia Manual for Uniform Traffic
BM BENCHMARK
PERF PERFORATED
LIMIT Of DISTURBANCE
TEST PIT LOCATION/BORING LOCATION
MAGISTERIAL DISTRICT *. RIO
Control Devices.
BS BOTTOM OF SLOPE
PROP PROPOSED
t?-�
BENCHMARK
8. Unless otherwise noted all concrete pipe shall be reinforced concrete pipe-Class Ill.
FLOODPLAIN LIMIT
SOURCE OF BOUNDARY SURVEY: DOMINION ENGINEERING
9. All excavation for underground pipe installation must comply with OSHA Standards for
CB CATCH BASIN
PRVD PROVIDED
IRON FOUND
the Construction Industry (29 CFR Part 1926).
...
BZ
BUFFER ZONE
SOURCE OF TOPOGRAPHY:_ LOUISA AERIAL SURVEYS
CG12 ACCESSIBLE CURB RAMP
PWW PAVED WATER WAY
RMA
VISUALLY FIELD VERIFIED BY DESIGNER ON 2/2012.
GENERAL CONSTRUCTION NOTES FOR STREETS:
... ............. .......
RMA - RESOURCE MANAGEMENT AREA
UD
UNDERDRAIN
THIS PROPERTY IS NOT LOCATED IN FLOOD ZONE X AS SHOWN ON FEDERAL EMERGENCY MANAGEMENT AGENCY.
1. Construction inspection of all proposed roads within the development will be made by the
CENTER LINE
RCP REINFORCED CONCRETE PIPE
RPA
County. The contractor must notify the Department of Community Development (296-
REM REMOVE . .........
RPA - RESOURCE PROTECTION AREA
DRAINAGE LINE
THIS PROPERTY IS NOT LOCATED WITHIN A RESERVOIR WATERSHED.
5832) 48 hours in advance of the start of construction.
CL CHAIN LINK
2. Upon completion of fine grading and preparation of the roadbed subgrade, the contractor
CMP CORRUGATED METAL PIPE
READ REQUIRED ..... .......
EDGE OF GRAVEL
RD
ROOF DRAIN
BENCHMARK(51 TOP OF EXISTING SANITARY MANHOLE ON NORTH END OF SITE = 382.25
shall have CBR tests performed on the subgrade soil. Three (3) copies of the test results
SEWER LINE
AND IRON ROD FOUND AT SOUTH EAST CORNER OF SITE = 469.17
shall be submitted to the County. If a subgrade soil CBR of 10 or greater is not obtainable,
CONC CONCRETE
RET RETAIN ........ .......... .... . .....
EDGE OF PAVEMENT
a revised pavement design shall be made by the design engineer and submitted with the test
CY CUBIC YARDS
RT RIGHT ;i
CG-2
............. ............ TD
TRENCH DRAIN
WATER SOURCE.- ALBEMARLE COUNTY SERVICE AUTHORITY
results for approval.
3. Surface drainage and pipe discharge must be retained within the public right-of-way or
STANDARD 6" CURB
11W
within easements prior to acceptance by the County. All drainage outfoll easements are to
C/C CENTER TO CENTER
R/W RIGHT OF WAY
CG -3
6
WATER LINE
SEWER SERVICE:. ALBEMARLE COUNTY SERVICE AUTHORITY
be extended to a boundary line or a natural watercourse.
C&G CURB AND GUTTER
R&D REMOVE AND DISPOSE
STANDARD 4 CURB
.......... 4 °FP
FIRE PROTECTION LINE
4. Guardrail locations are approximate. Exact length, location and appropriate end treatments
CG-6
THIS PROPERTY IS ZONED: R4 AND R6
will be field verified at the time of construction. Additional guardrail may be required at
DIA DIAMETER
.........
R&R REMOVE & RESET
COMBINATION 6" CURB & GUTTER
........ 2"DW
WATER SERVICE LINE
locations not shown when, in the opinion of the County Engineer, or designee, it is deemed
CG-7
SETBACKS: FRONT YARD SIDE YARD REAR YARD
necessary. When guardrail is required, it shall be installed four (4) feet offset from the edge
EL ELEVATION
SD SIGHT DISTANCE
COMBINATION 4" CURB & GUTTER
........... ............. G
GAS LINE
BUILDING 25' 10, 20'
of pavement to the face of guardrail, and roadway shoulder widths shall be increased to
FIRE LANE STRIPING
seven (7) feet.
ELEV ELEVATION
SO SQUARE
...... OHW
OVERHEAD ELECTRIC WIRE
MAXIMUM NUMBER OF DWELLING UNITS:,99
5. Where urban cross sections are installed, all residential driveway entrances shall conform
ES END SECTION
STA STATION
to VDOT CG-9(A, 8 or C).
BE
BUILDING ENTRANCE
UGE
UNDERGROUND ELECTRIC
GROSS RESIDENTI DESNSITY- 4.43 UNIT/ACRE*
6. Where rural cross sections are installed, all residential driveway entrances shall conform to
EW END WALL
SW SIDEWALK
BY-RIGHT DENSITY = 4.46 UNIT/ACRE
VDOT standard PE-1.
7. Compliance with the minimum pavement width, shoulder width and ditch sections, as
EX EXISTING
SWEL SOLID WHITE EDGE LINE
LOADING DOCK
OHT
OVERHEAD TELEPHONE LINE
AREA ZONED R-4 21.79 Ac. 0 4 UNITS ACRE
AREA ZONED R-6 0.56 Ac. 0 6 UNITS ACRE
shown on the typical pavement section detail, shall be strictly adhered to.
BOLLARD
UGT
UNDERGROUND TELEPHONE LINE
4. 05 -UNIT/ACRE
S. Road plan approval for subdivisions is subject to final subdivision plot validation. Should
EXIST EXISTING
SWLL SOLID WHITE LANE LINE
PLUS 10X BONUS DENSITY FOR MAINTENANCE (4.05)+(0.1)(4.05) = 446 UNIT /ACRE
the final plot for this project expire prior to signing and recordation, then approval of these
FD
DUMPSTER PAD
.......... .......... CATV
CABLE TV
OF MORE THAN 20% OF EXISTING WOODED
plans shall be null and void.
FDN FOUNDATION
TBA TO BE ABANDONED
AREAS PER 2.0.15.4.1.
9. All signs or other regulatory devices shall conform with the Virginia Manual for Uniform
.................
TBR TO BE REMOVED
SIGN
. ... ....
pgop OSEp ApT,. 990 VpO (99 LOTS X 10 990 VPD)
Traffic Control Devices and the Albemarle County Road Naming and Property Numbering
FFE FINISHED FLOOR ELEVATION
......... 191
DRAIN INLET
CURRENT USE: VACANT
Ordinance and Manual.
10. Traffic control or other regulatory signs or barricades shall be installed by the developer
GTD GRADE TO DRAIN
TC TOP OF CURB .......
STEEL GUARDRAIL
DRAIN MANHOLE
17-
%
when, in the opinion of the County Engineer, or designee, they are deemed necessary in
IF IRON FOUND
TS TOP OF SLOPE
PLUG OR STUB
LAND SCHEDULE: PRE-DEVELOPMENT (SF) % POST-DEVELOPMENT (SF)
order to provide safe and convenient access.
............... .
F
WOOD GUARDRAIL
LOTS 0 0 453,50 46.4
11. The speed limits to be posted on speed limit signs are 5 mph below the design speed, or as
IS IRON SET
TYP TYPICAL
determined by VDOT for public roads.
...........
. . . . ... ....
FLARED END SECTION
PUBLIC R/W 0 0 20,681 2.1
(PEN PARK/RIO ROAD)
12. VDOT standard CD-1 or CD-2 cross-drains under to be installed under the subbase
LA LANDSCAPE AREA
........
UG UNDERGROUND . ... ... . .... . . .....
PATH
material at all cut and fill transitions and grade sag points as shown on the road profiles.
HEADWALL
PUBLIC R/W 0 91,823 9.4
13. A video camera inspection is required for all storm sewers and culverts that are deemed
LOD LIMIT OF DISTURBANCE
VESCHVA. E&S CONTROL HANDBOOK
TREE ILINE
(INTERNAL)
inaccessible to VDOT or County inspections. The Video inspection shall be conducted in
YDS YARDS
PRIVATE STREET R/W 0 0 29,654 3.0
accordance with VDOT`s video camera inspection procedure and with a VDOT or County
LF LINEAR FEET
................. .......
FENCE
SEWER MANHOLE
OPEN SPACE 973,566 (22.35 AC) 100 377,865 (8.67 AC) 3116
.inspector present.
GEN RRAI CONSTRUCTION NOTES FOR EROSION AND SEDIMENT CONTROL PLANS:
LT LEFT
UTILITY
-1: �%
STONE WALL
co
SEWER CLEANOUT
PLUS PUBLIC R/W VACATED 4,127 0.5
1. The plan approving authority must be notified one week prior to the pre-construction
RETAIN41NG WALL
(PEN PARK/RIO ROAD)
conference, one week prior to the commencement of land disturbing activity, and one week
ARV AIR RELEASE VALVE
......
MH MANHOLE
WV
WATER VALVE & BOX
TOTAL 973,566 (22.35 AC) 100% 977,693 (22.44 Acres) 100%
prior to the final inspection.
2. All erosion and sediment control measures will be constructed and maintained according to
i
BOA BLOW OF ASSEMBLY
PVC POLYVINYL CHLORIDE
STREAN /POND WATER COURSE
FIRE HYDRANT
minimum standards and specifications of the Virginia Erosion and Sediment Control
DETENTION BASIN
Handbook and Virginia Regulations VIR 625-02-00 Erosion and Sediment Control
CO CLEANOUT
RIM RIM ELEVATION ...... ........... .......
®
WATER METER
W M,tOUS AREA&
Regulations.
PROPOSED ROADS/PARKING AREAS- 86,684 SF.
3. All erosion and sediment control measures are to be placed prior to or as the first step in
CTV CABLE TELEVISION
SAN SANITARY
X
SILT FENCE
WATER WELL
PROPOSED CONCRETE WALKS: 26,136 SF.
clearing.
PROPOSED BUILDINGS & PATIOS: 151,153 SF.
4. A copy of the approved erosion and sediment control plan shall be maintained on the site at
DI DROP INLET
SCC STORMWATER CONVEYANCE CHANNEL
CONTOUR
PROPOSED DRIVEWAYS. 39,640 SF.
all times.
DIP DUCTILE IRON PIPE
...........
SD STORM
12
(�v
GAS VALVE
TOTAL IMPERVIOUS AREA: 303,613 SF. (6.97 ACRES)
5. Prior to commencing land disturbing activities in areas other than indicated on these plans
00
INDEX CONTOUR
GM
(including, but not limited to, off -site borrow or waste areas), the contractor shall submit a
ELEC ELECTRIC
STR DRAINAGE STRUCTURE
0
GAS METER
supplementary erosion control plan to the owner for review and approval by the plan
PARKING TABULATION FOR DUPLEXES SINGLE FAMILY-
approving authority.
FH FIRE HYDRANT
TSV TAPPING SLEEVE & VALVE
PARKING COUNT
ELECTRIC MANHOLE
REQUIRED PARKING: 2 SPACES PER UNIT PLUS 1 SPACE PER 4 UNITS
6. The contractor is responsible for installation of any additional erosion control measures
FM FORCE MAIN
UP UTILITY POLE
UNITS
necessary to prevent erosion and sedimentation as determined by the plan approving
IBM 1
CROSSWALK
EM
r>
60 UNITS X 2 SPACES PER UNIT PLUS 60 UNITS X 1 SPACE/4
authority.
ELECTRIC METER
135 PARKING SPACES REQUIRED
7. All disturbed areas are to drain to approved sediment control measures at all times during
F&C FRAME AND COVER
WL WATER LINE
. ............ ..
ACCESSIBLE CURB RAMP
TOTAL PROVIDED PARKING FOR DUPLEXES & SINGLE FAMILY.
land disturbing activities and during site development until final stabilization is achieved.
8. During dewatering operations, water will be pumped into an approved filtering device.
F&G FRAME AND GRATE
WM WATER METER
HANDICAP PARKING
+
LIGHT POLE
TELEPHONE MANHOLE
2-CAR GARAGE UNIT 4 SPACES (2 SPACES IN GARAGE AND 2 SPACES IN DRIVEWAY)
9. The contractor shall inspect all erosion control measures periodically and after each runoff
rainfall event. Any necessary repairs or cleanup to maintain the effectiveness of
GT GREASE TRAP
WV WATER VALVE
VAN-ACCESSIBLE HANDICAP PARKING
1-CAR GARAGE UNIT = 2 SPACES (11 ACE IN DRIVEWAY)
SPACE IN GARAGE AND 1 SP
producing
❑
TRANSFORMER PAD
the erosion control devices shall be made immediately.
GV GATE VALVE
6*V 6" VALVE
VA N
(45) 2-CAR GARAGE UNITS
10. All fill material to be taken from an approved, designated borrow area.
(8) 1-CAR GARAGE UNITS
11. All waste materials shall be taken to an approved waste area. Earth fill shall be inert
HDPE HIGH DENSITY POLYETHYLENE
.............. ------ ..........
CONCRETE PAVEMENT SIDEWALK
UTILITY POLE
45x4 + 8x2 = 196 SPACES
materials only, free of roots, stumps, wood, rubbish, and other debris.
....... .............
196 SPACES PROVIDED > 135 SPACES REQUIRED*
12. Borrow or waste areas are to be reclaimed within 7 days of completion per Zoning
INV INVERT
RIPRAIP
GUY POLE
ON- STREET PARALLEL PARKING SPACES ARE ALSO PROVIDED ON ONE SIDE OF THE PUBLIC STRRET
IN LOCATIONS AS SHOWN ON THE SITE PLAN. NO PARKING SIGNS HAVE BEEN PROVIDED IN VARIOUS
Ordinance section 5.1.28.
13. All inert materials shall be transported in compliance with section 13-301 of the Code of
.. . . .......
NEW ASPHALT
MATCHLINE
LOCATIONS AS SHOWN ON THE SITE PLAN.
Albemarle,
14. Borrow, fill or waste activity involving industrial-type power equipment shall be limited to
W W W
GRASS
the hours of 7: 00am to 9: OOpm.
PARKING TABULATION FOR TOWNHOUSES:
GUEST PARKING
15. Borrow, fill or waste activity shall be conducted in a safe manner that maintains lateral
EC-2 BLANKET MATTING
REQUIRED PARKING: 2 SPACES PER UNIT PLUS 1 SPACE PER 4 UNITS FOR
support, or order to minimize any hazard to persons, physical damage to adjacent land and
39 TOWNHOUSES X 2 SPACES + 39 TOWNHOUSES X (1 SPACE/4 UNITS)
improvements, and damage to any public street because of slides, sinking, or collapse.
vv\nwa8A�
EC -3 TYPE A
88 PARKING SPACES REQUIRED
16. The developer shall reserve the right to install, maintain, remove or convert to permanent
stormwater management facilities where applicable all erosion control measures required
EC-3 TYPE B
NOTES:
TOTAL PROVIDED PARKING FOR TOWNHOUSES:
by this plan regardless of the sale of any lot, unit, building or other portion of the property.
17. Temporary stabilization shall be temporary seeding and mulching. Seeding is to be at 75
CONTRACTOR'S COORDINATION RESPONSIBILITIES
........
WETLAND
1. THE SIZE OF THE SYMBOLS MAY VARY FROM THOSE SHOWN.
25 GARAGE UNITS X 2 PARKING SPACES = 50 SPACES + 38 PUBLIC SPACES
2. ALL ABBREVIATIONS AND SYMBOLS
SHOWN MAY NOT BE USED.
88 PARKING SPACES PROVIDED 88 PARKING SPACES REQUIRED
lbls/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
1. THE CONTRACTOR IS REQUIRED TO OBTAIN ANY /ALL PERMITS REQUIRED FOR CONSTRUCTION OF THESE PLANS.
OPEN SPACE IS TO BE OWNED AND MAINTAINED BY A HOMEOWNERS ASSOCIATION.
through August to consist of German Millet. Straw mulch is to be applied at 80lbs/100sf.
Alternatives are subject to approval by the County erosion control inspector.
2. ANY TIME WORK IS PERFORMED OFF-SITE OR WITHIN AN EXISTING EASEMENT, THE CONTRACTOR IS TO NOTIFY THE HOLDER OF SAID
ARE ASSOCIATED WITH
18. Permanent stabilization shall be lime and fertilizer, permanent seeding, and mulch.
EASEMENT AS TO THE NATURE OF PROPOSED WORK AND TO FOLLOW ANY
OR REFERENCED IN THE RECORDED EASEMENT.
GUIDLELINES OR STANDARDS WHICH
Agricultural grade limestone shall be applied at 901bs/1000sf, incorporated into the top 4-6
inches of soil. Fertilizer shall be applied at 1000lbs/acre and consist of a 10-20-10 nutrient
3. THE CONTRACTOR IS TO CHECK THAT ALL EASEMENTS, LETTERS OF PERMISSION, ETC, ARE RECORDED/OBTAINED PRIOR TO THE START
mix. Permanent seeding shall be applied at 180lbs/acre and consist of 95% Kentucky 31 or
OF ANY CONSTRUCTION.
GENERAL CONSTRUCTION NOTES FOR STORMWATER MANAGEMENT PLANS:
Tall Fescue and 0-5% Perennial Ryegrass or Kentucky Bluegrass. Straw mulch is to be
4. CONTRACTOR TO VERIFIY ALL SITE PLANS AND PROFILES AND DETAILS FOR CONSISTENCY AND IF CONFLICTS EXISTS, CONTACT ENGINEER
1. All dams and constructed fill to be within 95% of maximum dry density and 2% of optimum
applied at 80lbs/100sf. Alternatives are subject to approval by the County erosion control
FOR CLARIFICATION AND/OR DIRECTION. INTERPRETATION DETERMINED BY CONTRACTOR SHALL BE DONE AT HIS/HER OWN RISK.
moisture content. All fill material to be approved by a geotechnical engineer. A
geotechnical engineer is to be present during construction of dams.
inspector.
19. Maintenance: All measures are to be inspected weekly and after each rainfall. Any damage
5. THE CONTRACTOR IS TO VERIFY THAT THE RELOCATION OF ALL EASITING
COMPLETED INCLUDING UTILITY POLES.
UTILITIES IN CONFLICT WITH PROPOSED WORK HAS BEEN
2. Pipe and riser joints are to be watertight within stormwater management facilities.
or clogging to structural measures is to be repair immediately. Silt traps are to be cleaned
11. THIS PROJECT DISTURBS MORE THAN ONE ACRE OF LAND AND FALLS WITHIN THE VIRGINIA STORMWATER MANAGEMENT PROGRAM
3. For temporary sediment traps or basins which are to be converted to permanent stormwater
when 50% of the wet storage volume is filled with sediment. All seeded areas are to be
6. CONTRACTOR SHALL COMPLY WITH FENCING AND TREE PRESERVATION SIGNAGE REQUIIRED BY ALSEMARI F COUNTY CODE.
(VSMP), GENERAL CONSTRUCTION PERMIT (GCP) PROGRAM AS ADMINISTERED BY THE VIRGINIA DEPARTMENT OF CONSERVATION AND
management facilities; conversion is not to take place until the site is stabilized, and
reseeded when necessary to achieve a good stand of gross. Silt fence and diversion dykes
RECREATION (DCR) UNDER THE
JURISDICTION OF THE EPA. PRIOR TO THE START OF CONSTRUCTION, THE CONTRACTOR SHALL FILE A GCP
P has been obtained from the County erosion control inspector.
which are collecting sediment to half their height must be cleaned and repaired
7. CONTRACTOR SHAH NOT RELY SOLELY ON ELECTRONIC VERSIONS OF PLANS, SPECIFICATIONS. AND DATA FILES THAT ARE OBTAINED
OF THE PLANS
NOTICE OF INTENT WITH THE DCR AND PREPARE A STORMWATER PREVENTION PLAN IN ACCORDANCE WITH THE VSMP REGULATIONS.
immediately.
FROM THE DESIGNERS, BIUT SHALL VERIFY LOCATION OF PROJECT FEATURES IN ACCORDANCE WITH THE PAPER COPIES
20. All temporary erosion and sediment control measures are to be removed within 30 days of
AND SPECIFICATIONS THAT ARE SUPPLIED AS PART OF THE CONTRACT DOCUMENTS.
12. CONTRACTOR SHALL COORDINATE
NTH ALL U11LITY COMPANIES FOR INSTALLATION REQUIREMENTS
AND SPECIFICATIONS.
final site stabilization, when measures are no longer needed, subject to approval by the
8. CONTRACTOR SHALL COWPLY WITH AE WETLAND PERMIT REQUIREMENTS, IF
A PERMIT EXISTS.
13. CONTRACTOR SHALL BE RESPONSIBLE FOR SITE SECURITY AND JOB SAFETY. CONSTRUCTION ACTIVITIES SHALL BE IN ACCORDANCE
County erosion control inspector.
WITH OSHA STANDARDS AND LOCAL REQUIREMENTS.
21. This plan shall be void if the owner does not obtain a permit within 1 year of the date of
9. CONTRACTOR SHALL BE RESPONSIBLE FOR ALL RELOCATIONS, (UNLESS OTHERWISE NOTED ON PLANS) INCLUDING, BUT' NOT LIMITED TO,
approval. (Water Protection Ordinance section 17-204G.)
ALL UTILITIES, STORM DRAINAGE, SIGNS, TRAFFIC SIGNALS & POLES, ETC.
AS REQUIRED. ALL WORK SHALL BE IN ACCORDANCE WITH
14. ONTRACTOR SHALL DISPOSE
OF DEMOLITION DEBRIS IN ACCORDANCE WITH APPLICABLE FEDERAL, STATE AND LOCAL REGULATIONS,
22. Permanent vegetation shall be installed on all denuded areas within nine (9) months after
GOVERNING AUTHOR111ES REQUIREMENTS AND PROJECT SITEWORK SPECIFICA11ONS
BE INCLUDED IN BASE BIID.
AND SHALL BE APPROVED BY SUCH, ALL COST SHALL
ORDINANCES AND STATUTES.
the date the land disturbing activity commences. (Water Protection Ordinance section 17-2078)
15 EXISTING UJIL111ES SHALL BE TERMINATED, UNLESS OTHERWISE NOTED, IN CONFORMANCE WITH LOCAL, STATE AND INDIVIDUAL UTILITY
10. CONTRACTOR SHALL CONTROL STORMWATER RUNOFF DURING CONSTRUCTION TO PREVENT ADVERSE IMPACTS TO OFF SITE AREAS, AND
COMPANY STANDARDS SPECIFICATIONS, AND DETAILS. THE CONTRACTOR SHALL COORDINATE UTILITY SERVICE DISCONNECTS WITH THE
SHAH BE RESPONSIBLE TO REPAIR RESULTING DAMAGES, IF ANY, AT NO
COST TO OWNER.
UTILITY REPRESENTATIVES.
I r� 14 0
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Lic. N • 33028
tIONAL
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DOM. PROJECT N0:10.0171
INDEX TITLE:
�s2
SHEET NO: 2 OF 17
DATE: 02/28/12
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DOM. PROJECT N0:10.0171
INDEX TITLE:
�s2
SHEET NO: 2 OF 17
DATE: 02/28/12
•
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DOM. PROJECT N0:10.0171
INDEX TITLE:
�s2
SHEET NO: 2 OF 17
DATE: 02/28/12
INPMNME
�■■ Stop Sign
-� Power Pole
-�- Fire Hydrant
w Waterline
- Drainage Easement
- - - - Access Easement
- - Waterline Easement
Storm Sewer
- -OHE -- Overhead Electric
50.5x New Spot Elevation
102 Existing Elevation /Contour
02 Proposed Elevation /Contour
EC -2 Blanket Matting
Rip -Rap
Existing Vegetation
Slopes Greater Than 25%
Exisiting Treeline
3.01 SAFETY FENCE (i) D
3.02 ENTRANCETION CE
3.05 SILT FENCE SF
3.07
STORM DRAIN INLET
PROTECTION IP
3.09 DIVERSION DV
3.14 SEDIMENT BASIN SB
3.39 DUST CONTROL
TREE PROTECTION TP
GENERAL CONSTRUCTION NOTES
1. Prior to any construction within any existing public right -of -way, including connection to any
existing road, a permit shall be obtained from the Virginia Department of Transportation (VDOT). This
plan as drawn may not accurately reflect the requirements of the permit. Where any discrepancies
occur the requirements of the permit shall govern.
2. All materials and construction methods shall conform to current specifications and standards of
VDOT unless otherwise noted.
3. Erosion and siltation control measures shall be provided in accordance with the appiroved erosion
control plan and shall be installed prior to any clearing, grading or other construction.
4. All slopes and disturbed areas are to be fertilized, seeded and mulched.
5. The maximum allowable slope is 2:1 (horizontal: vertical). Where reasonably obtainable, lesser slopes
of 3:1 or better are to be achieved.
6. Paved, rip -rap or stabilization mat lined ditch may be required when in the opinion of the C�Junty
Engineer, or designee, it is deemed necessary in order to stabilize a drainage channel.
7. All traffic control signs shall conform with the Virginia Manual for Uniform Traffic Control Devices.
8. Unless otherwise noted all concrete pipe shall be reinforced concrete pipe - Class 1111.
9. All excavation for underground pipe installation must comply with OSHA Standards f(or the
Construction Industry (29 CFR Part 1926).
GENERAL CONSTRUCTION NOTES FOR EROSION AND SEDIMENT CONTROL PLANS
1. The plan approving authority must be notified one week prior to the pre - construction
conference, one week prior to the commencement of land disturbing activity, and one week
prior to the final inspection.
2. All erosion and sediment control measures will be constructed and maintained according to
minimum standards and specifications of the Virginia Erosion and Sediment Control
Handbook and Virginia Regulations VR 625 -02 -00 Erosion and Sediment Control
Regulations.
3. All erosion and sediment control measures are to be placed prior to or as the first step in
clearing.
4. A copy of the approved erosion and sediment control plan shall be maintained on the site at
all times.
5. Prior to commencing land disturbing activities in areas other than indicated on these plans
(including, but not limited to, off -site borrow or waste areas), the contractor shall submit a
supplementary erosion control plan to the owner for review and approval by the plan
approving authority.
6. The contractor is responsible for installation of any additional erosion control measures
necessary to prevent erosion and sedimentation as determined by the plan approving
authority.
7. All disturbed areas are to drain to approved sediment control measures at all times during
land disturbing activities and during site development until final stabilization is achieved.
8. During dewatering operations, water will be pumped into an approved filtering device.
9. The contractor shall inspect all erosion control measures periodically and after each runoff
producing
rainfall event. Any necessary repairs or cleanup to maintain the effectiveness of
the erosion control devices shall be made immediately.
10. All fill material to be taken from an approved, designated borrow area.
11. All waste materials shall be taken to an approved waste area. Earth fill shall be inert
materials only, free of roots, stumps, woad, rubbish, and other debris.
12. Borrow or waste areas are to be reclaimed within 7 days of completion per Zoning
Ordinance section 5.1.28.
13. All inert materials shall be transported in compliance with section 13 -301 of the Code of
Albemarle.
14. Borrow, fill or waste activity involving industrial -type power equipment shall be limited to
the hours of 7: 00am to 9: OOpm.
15. Borrow, fill or waste activity shall be conducted in a safe manner than maintains lateral
support, or order to minimize any hazard to persons, physical damage to adjacent land and
improvements, and damage to any public street because o slides, sinking, or collapse.
16. The developer shall reserve the right to install, maintain, remove or convert to permanent
stormwater management facilities where applicable all erosion control measures required
by this plan regardless of the sale of any lot, unit, building or other portion of the property.
17. Temporary stabilization shall be temporary seeding and mulching. Seeding is to be at 75
Ibs /acre, and in the months of September to February to consist a 50/50 mix of Annual
Ryegrass and Cereal Winter Rye, or in March and April to consist of Annual Rye, or May
through August to consist of German Millet. Straw mulch is to be applied at 80lbs /100sf.
Alternatives are subject to approved by the County erosion control inspector.
18. Permanent stabilization shall be lime and fertilizer, permanent seeding, and mulch.
Agricultural grade limestone shall be applied at 90lbs /1000sf, incorporated into the top 4 -6
inches of soil. Fertilizer shall be applied at 1000lbs /acre and consist of a 10 -20 -10 nutrient
mix. Permanent seeding shall be applied at 180lbs /acre and consist of 95% Kentucky 31 or
Tall Fescue and 0 -5% Perennial Ryegrass or Kentucky Bluegrass. Straw mulch is to be
applied at 80lbs /100sf. Alternatives are subject to approved by the County erosion control
inspector.
19. Maintenance: All measures are to be inspected weekly and after each rainfall. Any damage
or clogging to structural measures is to be repair immediately. Silt traps are to be cleaned
when 50% of the wet storage volume is filled with sediment. All seeded areas are to be
reseeded when necessary to achieve a good stand of grass. Silt fence and diversion dykes
which are collecting sediment to half their height must be cleaned and repaired
immediately.
20. All temporary erosion and sediment control measures are to be removed within 30 days of
final site stabilization, when measures are no longer needed, subject to approval by the
County erosion control inspector.
CONSTRUCTION SEQUENCE
1. Construction entrance will be
constructed at Sto 10 + 00 of Road A.
2. The sediment basins will be installed as
indicated.
3. The silt fence and diversions will be
installed as indicated.
4. The trees will be cleared as shown.
5. The culverts will be placed and the
inlet and outlet protection will be installed
as indicated.
6. The road and ditches with blanket
matting and check dams will be
con stru cted.
7. Dust control measures and permanent
seeding along the graded areas of the site
will prevent further erosion while
construction is taking place.
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OP
3.32
TEMPORARY SEEDING
TS
--0--
3.32
PS
PS
PERMENENT SEEDING
3.35
MULCHING
3.39 DUST CONTROL
TREE PROTECTION TP
GENERAL CONSTRUCTION NOTES
1. Prior to any construction within any existing public right -of -way, including connection to any
existing road, a permit shall be obtained from the Virginia Department of Transportation (VDOT). This
plan as drawn may not accurately reflect the requirements of the permit. Where any discrepancies
occur the requirements of the permit shall govern.
2. All materials and construction methods shall conform to current specifications and standards of
VDOT unless otherwise noted.
3. Erosion and siltation control measures shall be provided in accordance with the appiroved erosion
control plan and shall be installed prior to any clearing, grading or other construction.
4. All slopes and disturbed areas are to be fertilized, seeded and mulched.
5. The maximum allowable slope is 2:1 (horizontal: vertical). Where reasonably obtainable, lesser slopes
of 3:1 or better are to be achieved.
6. Paved, rip -rap or stabilization mat lined ditch may be required when in the opinion of the C�Junty
Engineer, or designee, it is deemed necessary in order to stabilize a drainage channel.
7. All traffic control signs shall conform with the Virginia Manual for Uniform Traffic Control Devices.
8. Unless otherwise noted all concrete pipe shall be reinforced concrete pipe - Class 1111.
9. All excavation for underground pipe installation must comply with OSHA Standards f(or the
Construction Industry (29 CFR Part 1926).
GENERAL CONSTRUCTION NOTES FOR EROSION AND SEDIMENT CONTROL PLANS
1. The plan approving authority must be notified one week prior to the pre - construction
conference, one week prior to the commencement of land disturbing activity, and one week
prior to the final inspection.
2. All erosion and sediment control measures will be constructed and maintained according to
minimum standards and specifications of the Virginia Erosion and Sediment Control
Handbook and Virginia Regulations VR 625 -02 -00 Erosion and Sediment Control
Regulations.
3. All erosion and sediment control measures are to be placed prior to or as the first step in
clearing.
4. A copy of the approved erosion and sediment control plan shall be maintained on the site at
all times.
5. Prior to commencing land disturbing activities in areas other than indicated on these plans
(including, but not limited to, off -site borrow or waste areas), the contractor shall submit a
supplementary erosion control plan to the owner for review and approval by the plan
approving authority.
6. The contractor is responsible for installation of any additional erosion control measures
necessary to prevent erosion and sedimentation as determined by the plan approving
authority.
7. All disturbed areas are to drain to approved sediment control measures at all times during
land disturbing activities and during site development until final stabilization is achieved.
8. During dewatering operations, water will be pumped into an approved filtering device.
9. The contractor shall inspect all erosion control measures periodically and after each runoff
producing
rainfall event. Any necessary repairs or cleanup to maintain the effectiveness of
the erosion control devices shall be made immediately.
10. All fill material to be taken from an approved, designated borrow area.
11. All waste materials shall be taken to an approved waste area. Earth fill shall be inert
materials only, free of roots, stumps, woad, rubbish, and other debris.
12. Borrow or waste areas are to be reclaimed within 7 days of completion per Zoning
Ordinance section 5.1.28.
13. All inert materials shall be transported in compliance with section 13 -301 of the Code of
Albemarle.
14. Borrow, fill or waste activity involving industrial -type power equipment shall be limited to
the hours of 7: 00am to 9: OOpm.
15. Borrow, fill or waste activity shall be conducted in a safe manner than maintains lateral
support, or order to minimize any hazard to persons, physical damage to adjacent land and
improvements, and damage to any public street because o slides, sinking, or collapse.
16. The developer shall reserve the right to install, maintain, remove or convert to permanent
stormwater management facilities where applicable all erosion control measures required
by this plan regardless of the sale of any lot, unit, building or other portion of the property.
17. Temporary stabilization shall be temporary seeding and mulching. Seeding is to be at 75
Ibs /acre, and in the months of September to February to consist a 50/50 mix of Annual
Ryegrass and Cereal Winter Rye, or in March and April to consist of Annual Rye, or May
through August to consist of German Millet. Straw mulch is to be applied at 80lbs /100sf.
Alternatives are subject to approved by the County erosion control inspector.
18. Permanent stabilization shall be lime and fertilizer, permanent seeding, and mulch.
Agricultural grade limestone shall be applied at 90lbs /1000sf, incorporated into the top 4 -6
inches of soil. Fertilizer shall be applied at 1000lbs /acre and consist of a 10 -20 -10 nutrient
mix. Permanent seeding shall be applied at 180lbs /acre and consist of 95% Kentucky 31 or
Tall Fescue and 0 -5% Perennial Ryegrass or Kentucky Bluegrass. Straw mulch is to be
applied at 80lbs /100sf. Alternatives are subject to approved by the County erosion control
inspector.
19. Maintenance: All measures are to be inspected weekly and after each rainfall. Any damage
or clogging to structural measures is to be repair immediately. Silt traps are to be cleaned
when 50% of the wet storage volume is filled with sediment. All seeded areas are to be
reseeded when necessary to achieve a good stand of grass. Silt fence and diversion dykes
which are collecting sediment to half their height must be cleaned and repaired
immediately.
20. All temporary erosion and sediment control measures are to be removed within 30 days of
final site stabilization, when measures are no longer needed, subject to approval by the
County erosion control inspector.
CONSTRUCTION SEQUENCE
1. Construction entrance will be
constructed at Sto 10 + 00 of Road A.
2. The sediment basins will be installed as
indicated.
3. The silt fence and diversions will be
installed as indicated.
4. The trees will be cleared as shown.
5. The culverts will be placed and the
inlet and outlet protection will be installed
as indicated.
6. The road and ditches with blanket
matting and check dams will be
con stru cted.
7. Dust control measures and permanent
seeding along the graded areas of the site
will prevent further erosion while
construction is taking place.
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DOM. PROJECT NO: 10.01711
INDEX TITLE:
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SHEET NO: 3 OF 17
DATE: 02/28/12
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INDEX TITLE:
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SHEET NO: 3 OF 17
DATE: 02/28/12
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DOM. PROJECT NO: 10.0171
INDEX TITLE:
SHEET NO: 4 OF 17
DATE: 02/28/12
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INDEX TITLE:
SHEET NO: 4 OF 17
DATE: 02/28/12
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ES11 SCALE: 1 20
Note: ST-1 to be removed upon completion of
Erosion and Sediment Control Plan Phase One.
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No.
A
8'
TO TOP AND
H (ft.)
..... .........
Dom Elev = 378.00
DRAINAGE AREA
(Acres)
WET VOL.
(REQ.)
(CF)
ORIENTED PER-
12 3 Spillwa
..........
FASTENED TO THE
"0
Elev 375.70
PENDICULAR TO
Crest Elev = 375-00
11 Device
2. SUPPORT BARS ARE
2
0
G6�e S.
2,081
2.5
6" Perforated PVC
2,081
1.5
CORRUGATED
370.00= 5 Orifice
Note: Refer to sediment basin calculations for sizing requirements.
TOP OF RISER.
Wet Volume
4
METAL OR 1/8"
Imperviious Core*
�J
SEDIMENT BASINS-
4'0 RCP
1,695
STEEL PLATE.
EW-1
Standpipe
3
Elev. = 364.00
Inv =390.93
PRESSURE
3" Orifice For SWM-1
To Be Plugged
8'0x1.5'
Concretl� 'Base
0.69
1,248
RELIEF HOLES
1,290
5.8x5.8' Cutoff Trench:*
2 1
2,143 1
MAY BE
*Impervious core and ctutoff trench shown
OMITTED, IF
PLAN VIEW
Pj; f - ENDS OF
CORRUGATIONS
.N.X-lit
D
W�,; A"r;
ARE LEFT FULLY
N 11
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OPEN WHEN THE
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TOP IS
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PERFORATED POLYETHYLENE* DEPTH
DRAINAGE TUBING VARIES AS
REQUIRED
FOR "DRY"
STORAGE
"FERN CO— STYLE" COUPLING WET
STORAGE
DEWATERING ORIFICE,
SCHEDULE 40 STEEL STUB
1—FOOT MINIMUM,
EWATERING SYSTEM DETAIL FOR SEDIMENT BASINS
MIN.) - - ---- - ---- - - ---------- - ------
No.
A
8'
NOTES:
H (ft.)
..... .........
Dom Elev = 378.00
DRAINAGE AREA
(Acres)
WET VOL.
(REQ.)
(CF)
— 0.5
12 3 Spillwa
..........
FASTENED TO THE
CMP Anti—Vortex
1
Elev 375.70
TOP OF THE RISER.
Crest Elev = 375-00
11 Device
2. SUPPORT BARS ARE
2
Dewatering Device
Irvi
2,081
2.5
6" Perforated PVC
2,081
1.5
Dry Volume Eley
370.00= 5 Orifice
Note: Refer to sediment basin calculations for sizing requirements.
TOP OF RISER.
Wet Volume
4
2
Imperviious Core*
ANTI-VORTEX DEVICE FOR
SEDIMENT BASINS-
4'0 RCP
1,695
1,664
EW-1
Standpipe
3
Elev. = 364.00
Inv =390.93
78.00 30" HDPE @ 1.o0%
3" Orifice For SWM-1
To Be Plugged
8'0x1.5'
Concretl� 'Base
0.69
1,248
6" HDPE @ 1,00
1,290
5.8x5.8' Cutoff Trench:*
2 1
2,143 1
Anti—Seep Collor
*Impervious core and ctutoff trench shown
for informational purposes only, Final
design to be provided by geotechnical
("�2SB—t
SCHEMATIC
engineer.
ES1 1 -NOT
TO SCALE
PERFORATED POLYETHYLENE* DEPTH
DRAINAGE TUBING VARIES AS
REQUIRED
FOR "DRY"
STORAGE
"FERN CO— STYLE" COUPLING WET
STORAGE
DEWATERING ORIFICE,
SCHEDULE 40 STEEL STUB
1—FOOT MINIMUM,
EWATERING SYSTEM DETAIL FOR SEDIMENT BASINS
MIN.) - - ---- - ---- - - ---------- - ------
No.
A
V-
............. ......................
kR <
NOTES:
H (ft.)
..... .........
1. THE CYLINDER MUST
DRAINAGE AREA
(Acres)
WET VOL.
(REQ.)
(CF)
BE FIRMLY
WET VOL.
(PROV.)
(CF)
I
..........
FASTENED TO THE
An
RISER DI
TOP OF THE RISER.
463.5
465
2. SUPPORT BARS ARE
2
SECTION A—A
ISOMETRIC WELDED TO THE TOP OF
2,081
2.5
THE RISER OR ATTACHED
2,081
1.5
BY STRAPS BOLTED TO
2
Note: Refer to sediment basin calculations for sizing requirements.
TOP OF RISER.
51
4
2
6
ANTI-VORTEX DEVICE FOR
SEDIMENT BASINS-
3
NOT TO SCALE
TEMPORARY SEDIMENT TRAP CALCULATIONS
No.
A
8
C
H (ft.)
..... .........
WEIR LENGTH
(f t.)
DRAINAGE AREA
(Acres)
WET VOL.
(REQ.)
(CF)
D1
(ft.)
WET VOL.
(PROV.)
(CF)
I
..........
D2
An
1
461
463.5
465
2
2
9
TEMPORARY SEDIMENT TRAP CALCULATIONS
No.
A
8
C
H (ft.)
Z
(f t.)
WEIR LENGTH
(f t.)
DRAINAGE AREA
(Acres)
WET VOL.
(REQ.)
(CF)
D1
(ft.)
WET VOL.
(PROV.)
(CF)
I
DRY VOL.
(REQ.)
(CF)
D2
DRY VOL.
(PROV.)
(CF)
1
461
463.5
465
2
2
9
1.15
2,081
2.5
2,100
2,081
1.5
2,575
2
446.5
449.5
51
4
2
6
0.92
1,664
3
1,695
1,664
1.5
1,890
3
442
445
447
2
2
T 4
0.69
1,248
3
1,290
1 1,248
2 1
2,143 1
EL = C AREA 2
DRY VOLUME D2
RIGINAL EL B AREA 1
GROUND
ELEVATION
WET VOLUME D1
EL = A (EXCAVATED)
CRO�S'S SECTION OF OUTLET
*NOTE: SEDIMENT TRAP SHALL NOT BE
REMOVED BEFORE COUNTY INSPECTOR HAS
DEEMED STABILIZED.
8 � TEMPORARY SEDIMENT TRAP DETAIL
E—SttFNOT TO SCALE
FILTER CLOTH \—(CLASS I
"COARSE [RIPRAP
AGGREGATE
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MIC MYERS
Lic. .33028
A�
ON A L
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20/ 0
SCALE: 1 20'
(_J�ST-3 DETAIL
............ * ......... ........ .......... .................. ..........
Esit SCALE: I " = 20'
rl AQQ I DIDDAD
. ... ..... . ....... - ------
]: -ij - C)
C)
02
E-
0
5!
------- .........
M
Z
20/ 0
SCALE: 1 20'
(_J�ST-3 DETAIL
............ * ......... ........ .......... .................. ..........
Esit SCALE: I " = 20'
rl AQQ I DIDDAD
_11 I I I � I --
AREA
OUTLET (PERSPECTIVE VIEW)
"COARSE AGGREGATE SHALL BE
VDOT #3, #357, OR #5,
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AREA
OUTLET (PERSPECTIVE VIEW)
"COARSE AGGREGATE SHALL BE
VDOT #3, #357, OR #5,
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VERSION
<E
DOM. PROJECT NO:10.0171,
INDEX TITLE:
ES1 I
SHEET NO:
11 OF
17
DATE:
02/28/12
F=
70' Min c))
c9 z
co U-4
Stone 3" SM-2A Asphalt 6 C-6
1. SET POSTS AND EXCAVATE A 4"X4" 2. STAPLE WIRE FENCING TO THE POSTS.
Construction – --------
Existing TRENCH UPSLOPE ALONG THE LINE
Access C
M 0
Slope e ........
....... L _ ____ I ----- 1, OF POSTS.
Pavement
cli
(D
L
C
18 MIN. GRAVEL (12 MIN. DEPTH)
6" 21 A Aggregate Base Filter Cloth
Existing Nc
Uj
RUNOFF WATER Grade SECTION B–B
WITH SEDIMENT
U
Existing
Li
4
B 40, A Pavement B
— I Ilia 4 FLOW GRAVEL FILTER
4 14 3 12" es
WIRE MESH 4"
SEDIMENT 2% Slope 12'* Min RUNOFF WATER WIRE MESH
FILTERED LTERED WATER
WATER 3. ATTACH THE FILTER FABRIC TO THE WIRE 4. BACKFILL AND COMPACT THE
Stone Positive Drainage Must extend full FENCE AND EXTEND IT INTO THE TRENCH. EXCAVATED SOIL.
A
Construction —To Sediment width of ingress T H 0
Access Trapping Device and egress operation
PLAN VIEW
FF II SPECIFIC APPLICATION —
SEDIMENT A MICRAE
A Qj[j
- At, Lic., N 3028
At�
THIS METHOD OF INLET PROTECTION IS APPLICABLE CONCRETE GUTTER 12" \,—CURB INLET
WHERE HEAVY CONCENTRATED FLOWS ARE EXPECTED 12' Min Positive Drainage
BUT NOT WHERE PONDING AROUND THE STRUCTURE SIONAL 1�1
To Sediment FLOW
MIGHT CAUSE EXCESSIVE INCONVENIENCE OR DAMAGE 2% Slope Trapping Device
. ......... . ...... ......... . ..... .................
TO ADJACENT STRUCTURES AND UNPROTECTED AREAS.
SPECIFIC APPLICATION
EXTENSION OF FABRIC AND ORE INTO THE TRENCH.
Filter Cloth THIS METHOD OF INLET PROTECTION IS APPLICABLE AT CURB INLETS
GRAVEL SHALL BE VDOT #3, #357 OR #5 COARSE WHERE PONDING IN FRONT OF THE STRUCTURE IS NOT LIKELY TO CAUSE
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INCONVENIENCE OR DAMAGE TO ADJACENT STRUCTURES AND UNPROTECTED
AGGREGATE. FILTER FABRIC
SECTION A–A AREAS. Uj
GRAVEL SHALL BE VDOT #3, #357 OR 5 COARSE AGGREGATE. 0
WIRE (( tl�
Jill')
CD
GRAVEL AND WIRE MESH NOTE: A minimum water tap of 1" diameter must be installed with a minimum
1' ballcock shutoff valve supplying a wash hose with a diameter of 1.5 for
rT_1
I DROP INLET PROTECTION IP1 adequate constant pressure. Wash water must be carried away from the pawed r4_�GRAVEL CURB INLE .1, P ROTECTION DETAIL (IP) W A z
construction entrance to on approved settling area to remove sediment. All
��11;22/'NOT TO SCALE
S12 NOT TO SCALE sediment shall be prevented from entering storm drains, ditches, or r3"�SILT FENCE DETAIL (SF )
watercourses. . ... ............................... ............ ...... ....... ....... --_--
...... ........... * --- -----
ES12 NOT TO SCALE 171
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S12 Not to Scale
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-------------
10% SETTLEMENT - -----------
----------- - --------------
- --------------- -
0.3' FREE BOARD ....
3'– 0" ------------------ ---- - - - -------
....... Cn
.............
... ... ....
............
...... Silt Fence
... . . . . . . . .
........... . ....
Cn
W..........
ENDWALL
...... (WITHOUT TIRE SUPPORT)
2. EXCAVATE A 4" x 4" TRENCH
TYPICAL VEE–SHAPED DIVERSION @
1. SET THE STAKES ALONG THE LINE ■OF MIN
UPSLOPE > rn
STAKES. ■Memnon
DIVERSION DETAIL (D TOE OF
5 FILL
........................................... .......... ............. ..................... ............................. CULVERT
—MAX -------
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f
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PIPE OUTLET TO 3. STAPLE FILTER MATERIAL
4. BACKFILL AND COMPACT
...... PIPE OUTLET THE EXCAVATED SOIL.
WELL–DEFINED TO STAKES AND EXTEND 0 0 E1
CHANNEL TO FLAT FENCE
SILT
d 0 AREA WITH IT INTO THE TRENCH. *DISTANCE IS 6 MINIMUM IF 1_4
PLAN VIEW NO DEFINED FLOW IS TOWARD EMBANKMENT
PLAN VIEW CHANNEL
E-
PERSPECTIVE VIEW
LOW W C:)
L 12
d
5 0 E-1
Stone Combination
..... ................ ............... ......... ................ ......
............ ....... ......... ................ d 12" d=12 0 �D
E4
SECTION A–A T
FILTER CLOTH -----------
----------
_9";
FILTER CLOTH KEY IN 6'
—KEY IN 6"-9 ; X E4
is RECOMMENDED FOR SECTION A–A RECOMMENDED FOR U
d50 = 6 ENTIRE PERIMETER ENTIRE PERIMETER SHEET FLOW INSTALLATION FLOW 2.5 '__I! r--)
(Median Stone SIze) P14 �?�r
(PERSPECTIVE VIEW) E4
A MAX A IN I WIRE
Outlet Diameter Discharge Apron Length Upstream Downstream Riprop IL I FASRiC CD
�kt B *VDOT #3, #357, #5, #56 OR #57 CLASS 1 W
Structure Pipe (in) (cfs) (ft) Apron Width (ft) Apron Width (ft) Stone Size
COARSE AGGREGATE TO REPLACE RIPRAP
POLYETHYLENE LINE POST C:)
18.29 14 4.5 16 Class Al �FABRIC fa�
ST-1 18 (ATTACH TO SILT FENCE IN "HORSESHOE" WHEN F_
.... ..... 11 ...... . ..... ...................... ...... ......... ......... .. ...... I ........ ........... ........ ....................... ............................... .. .......... ........ .... POSTS WITH
GROUND LINE
METAL TIE WIRES.) "e, I � -
ST-25 18" 26.89 15 4.5 16.5 Class Al 11*,I—CONCRETE HIGH VELOCITY OF FLOW F4
...... .. ......... ....... ....... .. ......... ...... ........ __ ........... ........... 111 ......... ....... ......... ................ ...... ...... ........ 11 ... ... ...................... 6' MAX. CONVENTIONAL BRACING FOOTING 0 W
SwM-1 241F 74.5 22 6 30 Class Al 5' MIN. METAL (T) OR IS EXPECTED. P4 W
(U) POSTS
SWM-2 30' 17.55 8 7. ....... . ........... ..... .................. 7.5 ........................ ...... ... Class Al
POINT A SHOULD BE HIGHER THAN POINT B. PERSPECTIVE VIEW PERSPECTIVE VIEW DOM. PROJECT NO: 10.0171
DRAINAGEWAY INSTALLATION PLASTIC FENCE METAL FENCE
(FRONT ELEVATION) INDEX TITLE:
SILTFENCE DETAIIJ (SF. ..... .......... ..................... ...... ................................. ............ ........... ........... ....
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nTTTI.PT P-PnITFCTinNT T A B T,T-I'. qS 1 _N 0__ - T__'_ _T* 0 - ------- S .... 6A ... L .... E-'"'*'-'--------"-'""-'"'*'*"---""'***
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IIIIIIImic SEE EROSION AND SEDIMENT CONTROL NARRATIVE t jf4jj Lic. .33028
iIFOR EXISTING SOILS MAP AND INFORMATION J 1 I 1 4,; 1 IIIIIIiIIIIIIIfII 11 it'll F 0
INAL
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150 0 150 300 450 LO K�I�EXISTING DRAINAGE F)IVIDES ................. . . . ...... .......... ...... ............ ... . .... I m m m m m W
S1 Not To Scale SCALE: 1" 150' W
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IIIDOM. PROJECT NO: 10.0171
IINDEX TITLE:
IIESI 3
II(�2� EXISTING TREELINE_ LEGEND 150 0 150 300 450 (_'3� EXISTING CRITICAL SI-10 P-T LEGEND 150 0 150 300 450 SHEET NO: 13 OF 17
..................... S . c a . I e ........... ............. ........................... ......................... Existing Trees Critical Slopes (25% Slopes & Greater �ESM)N .... o .... t ....... T. . o 1,�E �13 Not To Scale I m 0 m m m SCALE: 1 150' SCALE: 1" = 150'
DATE: 02/28/12
. . . . . . . . . . . . . . . . I'�'�,*�,�.�.-i�-�,.�',,'i��i�-..%�',,�i..'-�.].��,,,��,,��ii'�'�'�.,�i
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L (EXTENDED DETENTION FACILITY
SWM-1 DEmA.I. ........................... -- ..... - ...................... ....... - .................... ............ ............ .......
SCALE: 1 20'
Depth Zone % of Surface Areas
Deep Pool 26%
Lo Marsh 39%
Hi Marsh 35%
20 0 20 40 60
OFIV-0-10—IF
I M I m m ---
SCALE: 1 " — 20'
- 0''VA
SWM-2 DETAIL (ENHANCED EXTENDED DETENTION FACILITY'
............................... ...................... .......... -- ............... ....... ........................................ .................. -- .................................................. ............. ............ ........................... .............. ................... ........... ..........
SCALE: 1"=20'
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DOM. PROJECT NO: 10.0171
INDEX TITLE:
.00
SHEET NO: 14 OF 17
DATE: 05/15/11
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CM -C:
Short Version BMP Computations For Worksheets 2 - 6 N�
C
Albemarle County Water Protection Ordinance: Modified Simple Method C
ff� 0)
Plan: Dunlora Forest Water Resources Area: Development Area
0 UJ
Preparer: Dominion Date: 2012-02-08
------------ — ----- —
Project Drainage Area Designation DA-X
----------- — -----
L storm pollutant export in pounds, L = [P(Pj)Rv11 2 C(A)2.72
Rv mean runoff coefficient, Rv = 0.05 + 0.009(1)
pi small storm correction factor, 0.9
I percent imperviousness os 1P
P annual precipitation, 43" in Albemarle es
A project area in acres in subject drainage area, --- NE
Bill-41
C pollutant concentration, mg/l or ppm target phosphorus
Expanded f factor applied to RR
Steel Grate (Typ.) WELD (TYP.),
12" V required treatment volume in cy, 0.5" over imperv. area A(1)43560(0.5/12)/27
RR required removal , L(post) - f x L(pre)
%RR removal efficiency,, RR100/L(post)
11 /2 X 1 1/2" X
<
1 /4" STEEL ANGLE
LWO Computation (y, lues Lilf square feet) °.) Impervious Cover
I T
Expanded Steel Grate Opemina Detail 2J-3 LB PER FT2
Not To Scole EXPANDED STEEL
LQS/SF LWO SWO IWIDTH GRATE BASED ON
2.5 2.28" 1.03" .203" LOW FLOW OPENING
3.0 3.44" .940" .264"
/16" HOLES
0 AS SHOWN
WELD (FYP.)
O -1 1/2" X 1 1/2" X 1/4"
STEEL ANGLE (7yp.)
1 1/2" X 1/4" STEEL
V, STOCK WELDED TO
3" BASE AS SHOWN
GENERAL NOTES FOR TRASH RACK
1. STEEL To CONFORM TO ASTM A-36,
2. ALL SURFACES OF TRASH RACK(S) MUST BE HOT DIPPED GALVANIZED AFTER FABRICATION.
Item
-f ---- ---------- — -----
'pre-development
I-------
Area WS �t.-j i W1 6 jr � j-� -------------
I Roads & Parking
Width subtotal
Width subt(
011 0"
86684.4
0 0 13503-61
011 0
I
I U
0 0- ;_86684.4
I ---------- -
0 o- 01
— ------- -- 0
_�6q8 I 01 1001W
J J------.
jDriveways Len th Width no. subtotal
---------- ----------- +,-- —q,
Width no subtotal J
land walks
0
0
01
---------- 1 01 01 39639.6 1��
---------- ----------
0 0 0
0
n n — t,
-- ------- -
61_______.._ o.�_________ 9] .. j6136
--
oil 91- 65775.61
1 2 --------- 3 j I
01
1
0 01
------ -------- ------
Gravel areas Area
0.70
----------
O J 43561x 0.70 3049.21
---
Structures
Area no. subtotal
Area no, subtotal
0
0
1 01 0 143312.14
, --
01 0
ot
--ol
I. ----------- 4 -------- —
0 7840.8
---0T 6
0 F- 151152.941
:4
1 Actively- grazed pasture &
arils and cultivated turf
Area
?� -0-
Area
1,
365032.8!x 0.08 - 29202.624' ,
---------- ------------------------
,Active crop land
1
Area
Area
i
t
01
OL ---------- ---------- ----- - -
10ther Impervious Areas
Impervious Cover
0�