HomeMy WebLinkAboutSDP202300003 Plan - Submittal (First) 2023-01-178 1 7 1 6
DOMINION ENERGY VIRGINIA SITE PREPARATION PERFORMANCE SPECIFICATIONS
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4 1 2
RESPONSIBLE LAND DISTURBER DESIGNATION
2
1
PREFACE
IT IS THE INTENT OF THESE SPECIFICATIONS TO HAVE A COMPLETELY PREPARED SITE FOR THE
CONSTRUCTION OF AN ELECTRICAL FACILITY AT THE COMPLETION OF THE "WORK" AS INDICATED ON THE
DRAWINGS, SPECIFICATIONS, OR OTHER DOCUMENTS PROVIDED.
THE REGULATIONS OF ALL LOCAL, STATE, OR FEDERAL GOVERNMENTAL BODIES HAVING JURISDICTION OVER
THE WORKING AREAS SHALL BE OBSERVED AT ALL TIMES.
D ANY SPECIFICATIONS OR INSTRUCTIONS APPEARING ON THE DRAWINGS SHALL HAVE PRECEDENCE OVER
THE WRITTEN SPECIFICATIONS WHICH APPEAR HEREIN. IN THE EVENT THAT A DISCREPANCY OR OMISSION
HAS OCCURRED, DOMINION ENERGY VIRGINIA SHALL BE CONSULTED FOR RESOLUTIONS.
ALL "WORK" SHALL BE PERFORMED IN A MANNER CONSISTENT WITH THE BEST PRACTICES OF THE TRADES
INVOLVED.
ALL "WORK" SHALL BE PERFORMED WITHIN THE LIMITS OF THE PROPERTY / RIGHTS -OF -WAY SHOWN ON THE
DRAWINGS. THE CONTRACTOR WILL RECOGNIZE AND ABIDE BY ALL TERMS AND CONDITIONS OF PERMITS,
EASEMENTS, AND AGREEMENTS RELATING TO THE PROJECT.
CLEARING AND GRUBBING
LIMITS FOR CLEARING AND/OR GRUBBING SHALL BE AS DEFINED ON THE DRAWINGS. CLEARING SHALL
CONSIST OF REMOVAL AND DISPOSAL OF BRUSH, DOWNED TIMBER, LOGS, STANDING TREES AND SNAGS,
OTHER GROWTH AND ANY ITEMS THAT WOULD INTERFERE WITH CONSTRUCTION OPERATIONS.
GRUBBING SHALL CONSIST OF REMOVAL AND DISPOSAL OF STUMPS, BURIED LOGS, ROOTS GREATER THAN
1/2 " DIAMETER, AND ANY OTHER ORGANIC MATERIAL BELOW THE GROUND SURFACE. ALL CLEARED AREAS
WILL BE GRUBBED UNLESS OTHERWISE NOTED.
DISPOSAL OF CLEARED/GRUBBED MATERIAL BY BURNING SHALL ONLY BE USED WHEN WRITTEN APPROVAL IS
OBTAINED FROM LOCAL AUTHORITIES AND DOMINION ENERGY VIRGINIA. OTHERWISE, DISPOSAL SHALL BE
OUTSIDE THE LIMITS OF DOMINION ENERGY VIRGINIA CONTROLLED LAND.
TOPSOIL
ALL TOPSOIL AND SURFACE SOILS CONTAINING ORGANIC MATERIAL SHALL BE REMOVED FROM THE
GRUBBED AREA. TOPSOIL SHALL BE STOCKPILED FOR FUTURE USE IN APPROVED LOCATIONS UNLESS
OTHERWISE SHOWN ON THE DRAWINGS.
TOPSOIL SHALL NOT BE USED AS, OR MIXED WITH, FILL MATERIAL IN THE CONSTRUCTION OF EARTH
EMBANKMENTS UNLESS OTHERWISE SHOWN ON THE DRAWINGS.
TOPSOIL MATERIAL USED AS A SURFACE DRESSING SHALL BE REASONABLY FREE OF CINDERS, DEBRIS, AND
STONES. UNSUITABLE AND EXCESS TOPSOIL MATERIAL SHALL BE DISPOSED OFFSITE.
C EARTHWORK
EXCAVATION:
EXCAVATION SHALL BE ACCOMPLISHED BY CUTTING ACCURATELY TO THE CROSS SECTIONS, GRADES, AND
ELEVATIONS SHOWN ON THE DRAWINGS.
SOFT, UNSTABLE, OR OTHERWISE UNSATISFACTORY MATERIALS ENCOUNTERED AT THE REQUIRED GRADES
SHALL BE REMOVED AS DIRECTED AND REPLACED WITH APPROVED, PROPERLY COMPACTED MATERIAL.
COMMON EXCAVATION SHALL INCLUDE ALL MATERIAL WHICH CAN BE REMOVED BY COMMON EARTH
EXCAVATION EQUIPMENT, OTHER THAN SOLID ROCK OR BOULDERS AND DETACHED PIECES OF ROCK, EACH
EXCEEDING 2 CUBIC YARDS IN VOLUME.
ROCK EXCAVATION SHALL BE MATERIAL WHICH REQUIRES THE USE OF PNEUMATIC HAMMERS AND/OR
EXPLOSIVES FOR REMOVAL.
SITE PREPARATION:
IF EARTHWORK OPERATIONS ARE PERFORMED DURING WET SEASONS, CONTRACTOR SHALL AVOID
OPERATING EQUIPMENT ON SATURATED SOILS. ANY WET SUBGRADE AREAS WHICH RECEIVE COMPACTED
FILL SHALL BE DRAINED AND ALLOWED TO DRY.
THE EXPOSED SUBGRADES OF THE BUILDING PAD AND ROADBEDS SHALL BE PROOFROLLED TO DETECT
UNSUITABLE SOIL CONDITIONS. PROOFROLLING SHALL BE DONE AFTER A SUITABLE PERIOD OF DRY
WEATHER TO AVOID DEGRADING THE SUBGRADE. PROOFROLLING SHALL BE PERFORMED WITH A HEAVILY
LOADED DUMP TRUCK OR WITH SIMILAR APPROVED CONSTRUCTION EQUIPMENT.
SOFT MATERIALS ENCOUNTERED SHALL BE COMPLETELY EXCAVATED AND REPLACED WITH APPROVED FILL
MATERIALS
EMBANKMENT:
EMBANKMENT WORK SHALL CONSIST OF THE PLACEMENT AND COMPACTION OF FILL MATERIAL ABOVE THE
NATURAL GROUND OR OTHER SURFACE IN CONFORMANCE WITH THE DRAWINGS.
MATERIALS:
APPROVED SOILS USED IN COMPACTED FILLS SHALL BE FREE OF DEBRIS AND FIBROUS ORGANIC MATERIAL.
FROZEN MATERIAL WILL NOT BE PERMITTED IN THE FILL. SATISFACTORY MATERIALS SHALL COMPRISE THOSE
CLASSIFIED IN ACCORDANCE WITH THE UNIFIED SOIL SYSTEM, ASTM D-2487 AS GW, GP, SW, SP, SM, AND SC.
THESE MATERIALS SHALL POSSESS A MAXIMUM DRY DENSITY OF 100 #/CU.FT. OR GREATER REFERENCED TO
ASTM D-698 STANDARD PROCTOR. SOILS SHALL HAVE A LIQUID LIMIT LESS THAN 40 PERCENT AND A
PLASTICITY INDEX LESS THAN 15. OTHER MATERIALS, WHEN APPROVED BY ENGINEERING, MAY BE
PERMITTED IN FILL AREAS.
UNSATISFACTORY SOILS INCLUDE THOSE CLASSIFIED AS PT, OH OR OL, CH, MH, CL AND ML, AS REFERENCED
TO ASTM D-2487.
COMPACTION:
COMPACTION EQUIPMENT SHALL CONSIST OF VIBRATORY OR TAMPING ROLLERS, SHEEPSFOOT ROLLER,
PNUEMATIC-TIRED ROLLERS, THREE -WHEEL POWER ROLLERS, WALK BEHIND VIBRATORY ROLLERS,
VIBRATORY PLATE OR OTHER APPROVED EQUIPMENT WELL SUITED TO THE SOIL BEING COMPACTED.
APPROVED FILL MATERIAL SHALL BE PLACED IN UNIFORM HORIZONTAL LIFTS OF APPROXIMATELY 8" DEPTH
(LOOSE MEASUREMENT), EXCEPT FOR ROAD MATERIALS ABOVE SUBGRADE ELEVATION AND THE UPPER 12"
OF BUILDING PADS WHICH REQUIRE 6" LIFTS. WHERE WALK BEHIND ROLLERS AND VIBRATORY PLATE
COMPACTORS ARE USED, THE LIFT THICKNESS SHALL NOT EXCEED 4".
GENERALLY, FILLS SHALL BE COMPACTED TO AT LEAST 95 PERCENT OF THE STANDARD PROCTOR MAXIMUM
DRY DENSITY (ASTM D-698), WITH MOISTURE CONTENT RANGING BETWEEN LESS THAN 3 PERCENT UP TO THE
OPTIMUM AS DETERMINED BY THE PROCTOR DENSITY TEST. THE UPPER 121, OF ROADBEDS AND CONTROL
ENCLOSURE BUILDING PADS REQUIRE 98 PERCENT COMPACTION REFERENCED TO ASTM D-698, WITH
MOISTURE CONTENT MAINTAINED WITHIN 2 PERCENT OF THE OPTIMUM.
EACH SUCCESSIVE LIFT WILL BE PLACED ON FIRM APPROVED SUBGRADE OR COMPACTED FILL. WHERE
PREVIOUS LIFTS ARE FOUND TO BE UNACCEPTABLE, THE AREA WILL BE SCARIFIED, AERATED OR MOISTENED,
RECOMPACTED OR REMOVED, AND REPLACED AS REQUIRED.
DRAINAGE:
THE FILL SURFACE SHALL BE ADEQUATELY MAINTAINED DURING CONSTRUCTION. THE SURFACE SHALL BE
SLOPED TO ACHIEVE SUFFICIENT DRAINAGE, AND TO PREVENT WATER FROM PONDING ON THE FILL. IF
PRECIPITATION IS EXPECTED WHILE FILL CONSTRUCTION IS TEMPORARILY HALTED, THE SURFACE SHALL BE
ROLLED WITH RUBBER -TIRED OR STEEL -DRUMMED EQUIPMENT TO IMPROVE SURFACE RUNOFF. FOR
PLACEMENT DURING OR AFTER DIFFICULT WEATHER CONDITIONS, WET OR FROZEN MATERIAL SHALL BE
REMOVED.
FINISHED GRADE TOLERANCES:
THE TOP OF EARTHWORK FOR SUBSTATION PAD AND ROADWAY TRAVEL AREAS SHALL BE WITHIN 0.10 FT.
ABOVE OR BELOW THE THEORETICAL GRADE.
EARTH SLOPES:
EXCAVATED SLOPES STEEPER THAN 3:1 SHALL BE ROUGH GRADED IN A MANNER TO PROVIDE HORIZONTAL
RIDGES AND GROOVES HAVING AN AVERAGE DEVIATION NO GREATER THAN 0.75 FT. FROM THE THEORETICAL
LINE OF THE TYPICAL CROSS SECTION.
EXCAVATED SLOPES 3:1 OR FLATTER SHALL BE UNIFORMLY FINISHED AND SHALL NOT DEVIATE FROM THE
THEORETICAL PLANE SURFACE BY MORE THAN 0.50 FT.
EMBANKMENT SLOPES STEEPER THAN 3:1 SHALL BE ROUGH GRADED IN A MANNER TO PROVIDE HORIZONTAL
RIDGES AND GROOVES NOT MORE THAN 0.50 FT. FROM THE THEORETICAL LINE OF THE TYPICAL CROSS
SECTION.
EMBANKMENT SLOPES 3:1 OR FLATTER SHALL BE UNIFORMLY FINISHED AND SHALL NOT DEVIATE FROM THE
THEORETICAL PLANE SURFACE BY MORE THAN 0.50 FT.
ROCK SLOPES:
SHALL NOT DEVIATE FROM A PLANE SURFACE BY MORE THAN 2.0 FT. AND SHALL NOT DEVIATE FROM THEIR
THEORETICAL LOCATION BY MORE THAN 2.0 FT. MEASURED ALONG ANY LINE PERPENDICULAR TO THE
THEORETICAL SLOPE LINE.
BENCHING:
MATERIALS / INSTALLATION
BENCHING SHALL CONSIST OF A SERIES OF HORIZONTAL CUTS BEGINNING AT THE TOE OF THE EXISTING
VDOT:
SLOPED SURFACE AND CONTINUING AT EACH VERTICAL INTERSECTION OF THE PREVIOUS CUT.
ITEMS REFERENCED TO THE VIRGINIA DEPARTMENT OF TRANSPORTATION SHOWN ON THE DRAWINGS SHALL
SATISFACTORY MATERIAL REMOVED DURING THIS OPERATION SHALL BE RECOMPACTED ALONG WITH THE
CONFORM TO THE REQUIREMENTS OF THEIR LATEST STANDARDS AND SPECIFICATIONS.
NEW EMBANKMENT MATERIAL AS GENERALLY SPECIFIED, EXCEPT MOISTURE CONTENT SHALL BE
MANUFACTURERS' ITEMS:
B
MAINTAINED WITHIN 10 PERCENT OF THE OPTIMUM.
BENCHING SHALL BE REQUIRED FOR ALL FILL EMBANKMENTS PLACED ON EXISTING SLOPES AS FOLLOWS:
ITEMS REFERENCED TO SPECIFIC MANUFACTURERS OR BRAND NAMES SHALL BE SUBJECT TO ANY
RECOMMENDATIONS OR LIMITATIONS PERTAINING TO THEIR INSTALLATION OR USE.
SLOPES STEEPER THAN 4:1 BUT NOT STEEPER THAN 1 1/2:1, THE BENCH SHALL BE AT LEAST 6 FT. IN WIDTH.
REQUESTS FOR SUBSTITUTIONS MUST BE APPROVED BY ENGINEERING. SUFFICIENT INFORMATION
V ' 1 —_ Z' —1 ' — '!— ' �• —_ _ — —_
REGARDING REQUESTS MUST BE RECEIVED BY ENGINEERING 10 DAYS IN ADVANCE OF APPROVAL.
PROJECT DESCRIPTION:
THIS PROJECT PROVIDES FOR THE INSTALLATION OF AIR CORE SERIES REACTOR ON LINE 2054 AT HOLLYMEADE
SUBSTATION. THE SUBSTATION WILL BE EXPANDED TO PROVIDE SPACE FOR NEW EQUIPMENT. NEW PERIMETER
1 )
FENCING WILL BE INSTALLED TO MATCH THE EXISTING STATION FENCE. AN INTERNAL SEPARATION FENCE MUST
ALSO BE INSTALLED TO PROHIBIT PERSONNEL AND EQUIPMENT APPROACH TO REACTORS WHILE ENERGIZED.
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SUBSTATION GENERAL SR. SITING AND PERMITTING SPECIALIST: CIVIL ENGINEER OF RECORD:
EQUIPMENT LEGEND BLAIR PARKS R. CRAIG MURPHY
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(804) 658-7316 (724) 579-3866
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SECURITY FENCE BLAIR.PARKS@DOMINIONENERGY.COM EMAIL:
DOMINION ENERGY VIRGINIA R.MURPHY@GAICONSULTANTS.COM
F\
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EQUIPMENT ACCESS ROAD 10900 NUCKOLS ROAD GAI CONSULTANTS INC.
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FOURTH FLOOR 4701 COX ROAD SUITE 125
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AIR CORE SERIES REACTOR GLEN ALLEN, VIRGINIA 23060 GLEN ALLEN, VA 23060
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BREAKER DOMINION CIVIL SITE DESIGN ENGINEER:
TOM RICHESON JR
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BACKBONE STRUCTURE (804) 257-4714
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DOMINION ENERGY TECHNICAL
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OSWITCH
SERVICES, INC
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2400 GRAYLAND AVENUE
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RICHMOND, VIRGINIA 23220
5
L 3HO
ALL EXISTING AND
CALL MISS UTILITY
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PROPOSED GRADES
BEFORE DIGGING
4 3
SHOWN ON THIS SITE
1-800-5552-7001
OR
,
811
PLAN
ARE
DIRT
GRADES.
SUBSTATION EQUIPMENT LAYOUT
SCALE 1 "=60'
8 1 7
6 5
THE PERSON IDENTIFIED BELOW IS DESIGNATED AS THE RESPONSIBLE LAND DISTURBER WHO WILL BE
IN CHARGE OF AND RESPONSIBLE FOR CARRYING OUTTHE LAND DISTURBING ACTIVITY ASSOCIATED WITH
THIS PROJECT. THIS PERSON MEETS THE APPLICABLE REQUIREMENTS OF VIRGINIA CODE SECTION 10.1-563
AND 10.1-566 BY VIRTUE OF THE FOLLOWING:
✓ RESPONSIBLE LAND DISTURBER CERTIFICATE
DCR CERTIFICATION FOR COMBINED ADMINISTRATOR, ADMINISTRATOR, PLAN REVIEWER,
INSPECTOR, OR CONTRACTOR.
VIRGINIA PROFESSIONAL ENGINEER, LAND SURVEYOR, LANDSCAPE ARCHITECT, OR ARCHITECT.
RESPONSIBLE LAND DISTURBER CONTACT INFORMATION:
NAME (SIGNATURE) DATE
NAME (PRINT) DAVID K. PERRY
CERTIFICATION/REGISTRATION NUMBER RLD07424
COMPANY DOMINION ENERGY
MAILINGADDRESS 10900 NUCKOLS ROAD
GLEN ALLEN, VA 23060
TELEPHONE (804) 257-4631 FAX
E-MAIL David.K.Perry@Dominionenergy.com
THIS DESIGNATION MAY ONLY BE CHANGED BY A PLAN COVER SHEET REVISION THAT MUST BE SUBMITTED
TO THE VIRGINIA DEPARTMENT OF ENVIRONMENTAL QUALITY (DEQ) FOR VERIFICATION AND APPROVAL.
THE FOLLOWING INFORMATION MUST BE SUBMITTED TO DEQAT LEAST TWO (2) WEEKS IN ADVANCE OF THE
COMMENCEMENT OF LAND DISTURBING ACTIVITIES. NOTIFICATIONS SHALL BE SENT BY EMAIL TO
standardsandspecs@deq.virginia.gov
is PROJECT NAME OR PROJECT NUMBER (INCLUDING ANY ASSOCIATED CGP PERMIT NUMBER);
ii: PROJECT LOCATION (INCLUDING NEAREST INTERSECTION, LATITUDE & LONGITUDE, ACCESS POINT);
iii: ON -SITE PROJECT MANAGER NAME AND CONTRACT INFORMATION;
iv: RESPONSIBLE LAND DISTURBER (RLD) NAME AND CONTACT INFORMATION;
v: PROJECT DESCRIPTION;
vi: ACREAGE OF DISTURBANCE FOR PROJECT;
vii: PROJECT START AND FINISH DATE;
viii: ANY VARIANCES/EXEMPTIONS/WAIVERS ASSOCIATED WITH THIS PROJECT
PLEASE CONTACT DOMINION PERMITTING (C.J. LINDEMANN) AT 804.771.6408 TO SET UP
A PRE -CONSTRUCTION MEETING.
DRAWING
LIST
1
OF
29
COVER SHEET, SPECIFICATIONS/GENERAL NOTES
2
OF
29
OVERALL SITE PLAN
3
OF
29
EROSION & SEDIMENT CONTROL GENERAL NOTES & NARRATIVE
4
OF
29
EROSION & SEDIMENT CONTROL MINIMUM STANDARDS AND DETAILS
5
OF
29
EROSION & SEDIMENT CONTROL DETAILS
6
OF
29
EROSION & SEDIMENT CONTROL AND DEMOLITION PLAN (1 OF 3)
7
OF
29
EROSION & SEDIMENT CONTROL AND DEMOLITION PLAN (2 OF 3)
8
OF
29
EROSION & SEDIMENT CONTROL AND DEMOLITION PLAN (3 OF 3)
9
OF
29
SITE PLAN (1 OF 3)
10
OF
29
SITE PLAN (2 OF 3)
11
OF
29
SITE PLAN (3 OF 3)
12
OF
29
FENCE PLAN
13
OF
29
GRADING & DRAINAGE PLAN (1 OF 2)
14
OF
29
GRADING & DRAINAGE PLAN (2 OF 2)
15
OF
29
GRADING SECTIONS AND PROFILES (1 OF 3)
16
OF
29
GRADING SECTIONS AND PROFILES (2 OF 3)
17
OF
29
GRADING SECTIONS AND PROFILES (3 OF 3)
18
OF
29
CONSTRUCTION DETAILS
19
OF
29
STORMWATER NARRATIVE
20
OF
29
LANDSCAPE PLAN
21
OF
29
LANDSCAPE SPECIFICATIONS
22
OF
29
WATER QUALITY
23
OF
29
STORMWATER MANAGEMENT DRAINAGE AREA MAPS & ROUTING DIAGRAMS
24
OF
29
STORMWATER MANAGEMENT DRAINAGE AREA MAPS & ROUTING DIAGRAMS
25
OF
29
STORMWATER MANAGEMENT PRE -DEVELOPED 1-, 2- AND 10-YR ROUTING
26
OF
29
STORMWATER MANAGEMENT POST -DEVELOPED 1-, 2- AND 10-YR ROUTING
27
OF
29
CALCULATIONS
28
OF
29
CALCULATIONS
29
OF
29
CALCULATIONS
SURVEY DRAWING LIST
1 OF 2 TOPOGRAPHIC SURVEY FOR PROPOSED HOLLYMEADE SUBSTATION EXPANSION
2 OF 2 TOPOGRAPHIC SURVEY FOR PROPOSED HOLLYMEADE SUBSTATION EXPANSION
RETAINING WALL DRAWING LIST
1 OF 3 RETAINING WALL DETAILS
2 OF 3 RETAINING WALL DETAILS
3 OF 3 RETAINING WALL DETAILS
0
3
OWNER:
ADDRESS:
MAGISTERIAL DISTRICT:
LAT. - LONG.:
ZONING:
PARCEL ID:
USE:
PARCEL ACREAGE:
WATER AND SEWER:
WETLANDS IMPACTS:
LAND DISTURBANCE:
EXISTING TREE CANOPY
COVERAGE:
PROPOSED TREE CANOPY
COVERAGE:
PARKING:
PROPOSED BUILDINGS:
OFFSITE LAND
DISTURBANCE:
LAND DISTURBANCE
PERMIT:
VIRGINIA STORMWATER
MANAGEMENT
PROGRAM PERMIT
(VSMP):
FLOODPLAIN:
SITE LOCATION
SCALE 1 "=500'
GENERAL SITE INFORMATION
VIRGINIA ELECTRIC & POWER COMPANY
3317 WORTH CROSSING, CHARLOTTESVILLE, VA 22911
RIVANNA
LAT: 38' 07' 40.176" N
LONG: 78' 269.232" W
R-1 and R-15
03200-00-00-03700
ELECTRICAL SUBSTATION
6.72 ACRES
NONE PROPOSED
N/A
2.69 ACRES
3.44 ACRES
2.92 ACRES
NONE PROPOSED OR EXISTING
NONE PROPOSED (PRE-FAB ENCLOSURE)
TEMPORARY FOR CONSTRUCTION ACCESS. ANY OFFSITE LAND
DISTURBING ACTIVITY ASSOCIATED WITH THIS PROJECT MUST
HAVE AN APPROVED EROSION AND SEDIMENT CONTROL PLAN.
CONTACT DEQ TWO (2) WEEKS PRIOR TO ANY LAND DISTURBING
ACTIVITY. SEE DETAILS IN THE RESPONSIBLE LAND DISTURBER
DESIGNATION BLOCK ON THIS SHEET FOR DETAILS.
REQUIRED PRIOR TO ANY LAND DISTURBANCE. AN APPROVED
VSMP MUST BE ACCOMPANIED WITH A STORMWATER
POLLUTION PREVENTION PLAN (SWPPP) PRIOR TO
CONSTRUCTION.
THIS PROPERTY IS LOCATED IN ZONE "X" (AREAS DETERMINED TO
BE OUTSIDE THE 0.2%ANNUAL CHANCE FLOODPLAIN) AS SHOWN
ON FEMA PANEL #51003CO145D EFFECTIVE DATE: FEBRUARY 4,
2005. NO FLOODPLAIN LINES SHOWN ON PROPERTY.
REVISIONS
y
galconsultants
REV DATE DESCRIPTION
.00 Dominion
Energy
PRELIMINARY SITE AND GRADING PLAN
HOLLYMEADE SUBSTATION EXPANSION
ALBEMARLE COUNTY VIRGINIA
OPERATIONAL REGION B/M No. SCALE NTS
PROJECT F NAME DATE SHEET: OO1
DESIGNER
PROJECT ENGINEER DRAWING:
APPROVED BY R220236-00-000-00-C-001
2 1
17
C
3
0
Lc
C
3
A
9
7
OVERALL SITE PLAN
OHE
UGE UGE
UGT — UGT
UFO UFO
CTV CTV —
El
EXISTING MAJOR CONTOURS
EXISTING MINOR CONTOURS
PROPOSED MAJOR CONTOURS
PROPOSED MINOR CONTOURS
TOPOGRAPHIC SURVEY BOUNDARY
EXISTING ADJACENT PROPERTY LINE
EXISTING SITE PROPERTY LINE /
EXISTING FENCE LINE /
PROPOSED FENCE LINE /
EXISTING OVERHEAD ELECTRIC I
EXISTING UNDERGROUND ELECTRIC
EXISTING UNDERGROUND TELEPHONE —
EXISTING FIBER OPTIC
J
EXISTING TELECOMMUNICATION LINE /
EDGE OF EXISTING GRAVEL
PROPOSED SUBSTATION PAD
EXISTING EDGE OF WATER
5
4
2
2
1
NOTES:
1.
TOPOGRAPHIC INFORMATION SHOWN HERE IS BASED ON A TOPOGRAPHIC
I I
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/ / \
\
FIELD SURVEY COMPLETED BY DRAPER ADEN ASSOCIATES DATED MARCH
i
i —
2022.
2.
SOURCE OF MERIDIAN: NAD83 BASED UPON A TOPOGRAPHIC SURVEY OF
\
\ -500
\ \ \ —
\
\ \ \ \ \\\
HOLLYMEAD SUBSTATION BY RICHARD L. FRALIN, L.S. DATED 04/17/2013
\
PROVIDED BY DOMINION ENERGY.
3.
VERTICAL DATUM: BASED UPON A TOPOGRAPHIC SURVEY OF HOLLYMEAD
SUBSTATION BY RICHARD L. FRALIN, L.S. DATED 04/1712013 PROVIDED BY
DOMINION ENERGY.
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PROPOSED ACCESS ROAD CENTERLINE / J \ \ I N:6729393.29
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EXISTING RIP RAP
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EXISTING INLET
PROPOSED INLET
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EXISTING CULVERT `
EDGE OF EXISTING DITCH \ \ I \° TBM C SET
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LIMIT OF DISTURBANCE \ \ / \ \ E:11501800.27 ` / Say `
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PROPOSED STORM SEWER
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PROPOSED LEVEL SPREADER ( I I — //\\ 5 s ` \\\
EXISTING POWER POLE AND GUY WIRE ✓
� /
I I / / / �✓ /� �/ N/F
PARCEL /D- 0468•
/ / / FORESTLAKE.'
BENCHMARK / / / PROPOSED RETAINING WALL AREA PH -I
FORESTLAKES,
.0000, ASSOC/A
EXISTING IRON ROD FOUND I / / / / D.B. 1304, i
PR/MARYZO
RES/DEA
7 6 5 4
3
VIRGINIA
ELECTRIC ROW
FROM SURVEY
/I
SCALE: 1" = 50'
50 0 50
yREVISIONS
gaiconsultants
REV DATE DESCRIPTION
Dominion
Energy
OVERALL SITE PLAN
HOLLYMEADE SUBSTATION EXPANSION
ALBEMARLE COUNTY VIRGINIA
OPERATIONAL REGION B/M No. SCALE 1"=50'
PROJECT F NAME DATE SHEET: OO2
DESIGNER
PROJECT ENGINEER DRAWING:
1 OUJ APPROVED BY R220236-00-000-00-C-002
2 1
0
C
3
A
0
7
[.
5
4 1 2
2
1
10
x
L•'
A
EROSION AND SEDIMENTATION CONTROL NOTES - DOMINION ENERGY VIRGINIA
1. CONTRACTOR SHALL HAVE AVAILABLE A COPY OF THE LATEST VERSION OF THE VIRGINIA EROSION
AND SEDIMENT CONTROL HANDBOOK. CONTRACTOR SHALL BE RESPONSIBLE FOR THE INSTALLATION,
MAINTENANCE, AND REMOVAL OF ALL CONTROL DEVICES. THESE DEVICES SHALL MEET OR EXCEED
THE HIGHER OF THE REQUIREMENTS COVERED IN THIS HANDBOOK OR THE CONTROLLING
AUTHORITY.
2. EROSION AND SEDIMENT CONTROL DEVICES, AS SHOWN ON THE PLAN, SHALL BE INSTALLED AS THE
FIRST STEP OF THE GRADING PROCESS.
3. TEMPORARY DEVICES SHALL BE REPAIRED OR REPLACED IMMEDIATELY IF THEY CEASE TO FUNCTION
AS INTENDED. TEMPORARY CONTROLS SHALL BE REMOVED WHEN AREAS ABOVE THEN BECOME
STABILIZED TO THE SATISFACTION OF THE PLAN APPROVING AUTHORITIES.
4. IT SHALL BE THE RESPONSIBILITY OF THE CONTRACTOR TO KEEP SURROUNDING DRAINAGE BEDS FREE
OF SILT CAUSED BY EROSION DURING CONSTRUCTION.
5. NO DISTURBED AREA SHALL REMAIN DENUDED FOR LONGER THAN 7 DAYS, EXCEPT THOSE
CONTINUOUSLY BEING WORKED OR BUILT UPON.
6. ELECTRIC POWER, TELEPHONE, AND GAS SUPPLY TRENCHES ARE TO BE COMPACTED, SEEDED, AND
MULCHED WITHIN 7 DAYS AFTER BACKFILL. ALL EXCAVATED MATERIAL SHALL BE PLACED ON THE
UPHILL SIDE OF TRENCHES.
7. THE SITE STONE IS PART OF THE PERMANENT STABILIZATION OF THE SITE. IT SHALL BE APPLIED AS
SOON AS PRACTICAL AFTER FOUNDATION INSTALLATIONS ARE COMPLETE.
8. TEMPORARY OR PERMANENT SEEDING SHALL BE ACCOMPLISHED WITHIN 7 DAYS AFTER FINAL GRADE
IS REACHED ON ANY PORTION OF THE SUBSTATION LOT.
9. TOPSOIL SHALL BE APPLIED IN 2-6 INCH LAYERS ON AREAS ROUGHENED USING STANDARD
ROUGHENING PROCEDURES. ALL AREAS DESIGNATED TO BE SEEDED SHALL BE TOPSOILED WHEN
SUFFICIENT MATERIAL IS AVAILABLE.
10. UNLESS OTHERWISE NOTED, ALL DITCHES AND OTHER GRASS LINED WATER WAYS SHALL BE LIMED,
FERTILIZED, SEEDED, AND STABILIZED WITH EXCELSIOR BLANKET (CURLEX) IMMEDIATELY AFTER
CONSTRUCTION.
11. TEMPORARY AND PERMANENT SEEDING SHALL CONFORM TO THE LATEST SPECIFICATIONS OF THE
VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK. * GENERAL SPECIFICATIONS FOLLOW:
12. REFER TO SHEET 5 FOR TEMPORARY AND PERMANENT SEEDING SPECIFICATIONS.
GENERAL EROSION AND SEDIMENTATION CONTROL NOTES - VESCH
ES-1. UNLESS OTHERWISE INDICATED, ALL VEGETATIVE AND STRUCTURAL EROSION AND SEDIMENT
CONTROL PRACTICES WILL BE CONSTRUCTED AND MAINTAINED ACCORDING TO MINIMUM
STANDARDS AND SPECIFICATION OF THE VIRGINIA EROSION AND SEDIMENT CONTROL
HANDBOOK AND VIRGINIA REGULATIONS 9VAC25-840 EROSION AND SEDIMENT CONTROL
REGULATIONS.
ES-2. THE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO THE
PRE -CONSTRUCTION CONFERENCE, ONE WEEK PRIOR TO THE COMMENCEMENT OF LAND
DISTURBING ACTIVITY, AND ONE WEEK PRIOR TO THE FINAL INSPECTION.
ES-3. ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR AS THE FIRST
STEP IN CLEARING.
ES-4. A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE MAINTAINED ON
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 DETERMINED BY THE
PLAN APPROVING AUTHORITY.
ES-7. ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL
TIMES DURING LAND DISTURBING ACTIVITIES AND DURING SITE DEVELOPMENT UNTIL FINAL
STABILIZATION IS ACHIEVED.
ES-8. DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED 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.
PROJECT DESCRIPTION:
THE PURPOSE OF THIS PROJECT IS FOR THE INSTALLATION OF AIR CORE SERIES REACTORS ON LINE 2054
AT HOLLYMEADE SUBSTATION AT 3317 WORTH CROSSING, CHARLOTTE, VA. THE PROPERTY IS ZONED R1
AND R15 RESIDENTIAL. THE SITE AREA IS 2.69 ACRES WITH 1.42 EXISTING IMPERVIOUS ACRES. THE
PROPOSED INSTALLATION WILL COMPRISE OF 1.27 ACRES OF ADDITIONAL IMPERVIOUS SURFACE AND
2.69 ACRES OF LAND DISTURBANCE. THIS PROPERTY IS WITHIN THE SOUTH FORK RIVANNA RIVER
WATERSHED. (HUC 020802040203, VA 6TH ORDER JR08).
EXISTING CONDITIONS:
THE EXISTING SITE AREA CONSISTS MAINLY OF GRAVEL SURFACE DUE TO THE EXISTING SUBSTATION AND
THE GRAVEL ACCESS ROAD TO THE WEST. THE AREA SURROUNDING THE SUBSTATION CONSISTS MAINLY
OF GRASSY AREAS AND PATCHES OF WOODED AREAS ENCOMPASSING THE SUBSTATION. THE TERRAIN IS
RELATIVELY FLAT UNTIL IT DROPS OFF TO AN EXISTING POND SOUTH AND EAST OF THE SUBSTATION.
ADJACENT PROPERTIES
THIS SITE IS BOUND BY FOURTEEN (14) PROPERTIES, WHERE FOUR (4) ARE ZONED R-15 (RESIDENTIAL),
ONE (1) IS ZONED R-4 (RESIDENTIAL), EIGHT (8) ARE PLANNED RESIDENTIAL DEVELOPMENTS, AND THE
LAST IS A PLANNED RESIDENTIAL SHOPPING CENTER.
OFF -SITE AREAS:
THERE WILL BE NO OFF SITE DISTURBANCE.
SOILS:
I � \
Z
SOILS MAP
SCALE 1 "=200'
THE FOLLOWING THREE (3) SOIL TYPES ARE IDENTIFIED WITHIN THE SITE DEVELOPMENT AREA:
1) 27B ELIOACK LOAM, 2 TO 7 PERCENT, HYDROLOGIC SOIL GROUP (HSG) B, k=1.98.
2) 28C3 ELIOACK CLAY LOAM, 7 TO 15 PERCENT, HYDROLOGIC SOIL GROUP (HSG) B, k=1.98;
3) 34C GLENELG LOAM, 7 TO 15 PERCENT, HYDROLOGIC SOIL GROUP (HSG) B, k=1.98.
CRITICAL EROSION AREAS:
THERE ARE NO ENVIRONMENTALLY SENSITIVE AREAS WITHIN THE LIMITS OF DISTURBANCE
STRUCTURAL PRACTICES
1. SAFETY FENCE - 3.01
2. CONSTRUCTION ENTRANCE - 3.02
3. SILT FENCE - 3.05
4. STORM DRAIN INLET PROTECTION - 3.07
VEGETATIVE PRACTICES
1. TOPSOIL - 3.30
2. TEMPORARY SEEDING - 3.31
3. PERMANENT SEEDING - 3.32
4. MULCHING-3.35
5. SOIL STABILIZATION BLANKETS AND MATTING - 3.36
6. DUST CONTROL - 3.39
MANAGEMENT STRATEGIES
1. CONSTRUCTION WILL BE SEQUENCED SO THAT GRADING OPERATIONS CAN BEGIN AND END AS QUICKLY AS
POSSIBLE.
2. TEMPORARY SEEDING OR OTHER STABILIZATION WILL FOLLOW SEVEN (7) DAYS AFTER GRADING.
3. AREAS WHICH ARE NOT TO BE DISTURBED WILL BE CLOSELY MARKED BY FLAGS, SIGNS, ETC.
4. THE JOB SUPERINTENDENT SHALL BE RESPONSIBLE FOR THE INSTALLATION AND MAINTENANCE OF ALL
EROSION AND SEDIMENT CONTROL PRACTICES.
5. AFTER ACHIEVING ADEQUATE STABILIZATION, THE TEMPORARY EROSION AND SEDIMENT CONTROLS WILL
BE CLEANED AND REMOVED.
PERMANENT STABILIZATION
ALL AREAS DISTURBED BY CONSTRUCTION SHALL BE STABILIZED WITH PERMANENT SEEDING IMMEDIATELY
FOLLOWING FINISH GRADING. SEEDING SHALL BE APPLIED IN ACCORDANCE WITH STANDARD AND
SPECIFICATION 3.32, PERMANENT SEEDING. MULCH WILL BE USED IN ALL SEEDED AREAS AFTER SEED,
FERTILIZER, AND LIME HAVE BEEN APPLIED.
STORMWATER MANAGMENT
THE APPLICABLE SITE AREA IS CALCULATED TO BE 2.69 ACRES. IN ACCORDANCE WITH THE VIRGINIA RUNOFF
REDUCTION METHOD (VRRM), PHOSPHOROUS REMOVAL MUST ACHIEVE 2.01 POUNDS PER YEAR.
PHOSPHOROUS REMOVAL WILL BE MITIGATED VIA OFFSITE CREDITS THROUGH ECOSYSTEM SERVICES IVY
CREEK NUTRIENT BANK FACILITY.
THE SITE HAS FOUR (4) OUTFALLS THAT ARE ADEQUATE USING THE VRRM AND THE MS-19 REGULATIONS. FOR
OUTFALL 1, THE PRE -DEVELOPED 1-YEAR, 2-YEAR, AND 10-YEAR PEAK DISCHARGES ARE 0.35 CFS, 0.63 CFS AND
1.63 CFS RESPECTIVELY. THE POST -DEVELOPED 1-YEAR, 2-YEAR, AND 10-YEAR PEAK DISCHARGES ARE 0.35 CFS,
0.63 CFS, AND 1.63 CFS RESPECTIVELY. FOR OUTFALL 2, THE PRE -DEVELOPED 1-YEAR, 2-YEAR, AND 10-YEAR
PEAK DISCHARGES ARE 3.38 CFS, 5.70 CFS, AND 13.65 CFS RESPECTIVELY. THE POST -DEVELOPED 1-YEAR,
2-YEAR, AND 10-YEAR PEAK DISCHARGES ARE 5.31 CFS, 8.16 CFS, AND 17.52 CFS RESPECTIVELY. OUTFALL 1 IS
IN COMPLIANCE WITH VIRGINIA ADMINISTRATIVE CODE 9VAC25-870-66.B.1.a., OUTFALL 2 IS IN COMPLIANCE
WITH VIRGINIA ADMINISTRATIVE CODE 9VAC25-870-66.D AND 9VAC25-870-66.B.1.a.
MAINTENANCE
IN GENERAL, ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CHECKED DAILY AND AFTER EACH
SIGNIFICANT RAINFALL. THE FOLLOWING MEASURES WILL BE CHECKED AND MITIGATED ACCORDINGLY.
SAFETY FENCE - 3.01
SAFETY FENCE SHALL BE CHECKED REGULARLY FOR WEATHER -RELATED OR OTHER DAMAGE. ANY NECESSARY
REPAIRS MUST BE MADE IMMEDIATELY. CARE SHOULD BE TAKEN TO SECURE ALL ACCESS POINTS (GATES) AT
THE END OF EACH WORKING DAY. ALL LOCKING DEVICES MUST BE REPAIRED OR REPLACED AS NECESSARY.
CONSTRUCTION ENTRANCE - 3.02
A CONSTRUCTION ENTRANCE WILL BE INSTALLED AT THE SITE FOR VEHICLE INGRESS AND EGRESS TO
REDUCE THE AMOUNT OF SEDIMENT TRANSPORTED ONTO PAVED PUBLIC FACILITIES AND ROADS BY
VEHICULAR TRAFFIC OR RUNOFF. THE CONSTRUCTION ENTRANCE SHALL BE INSTALLED FOLLOWING
VESCH STANDARD 3.02.
SILT FENCE - 3.05
SILT FENCE BARRIERS SHALL BE INSTALLED DOWNSLOPE OF AREAS WITH MINIMAL GRADES TO FILTER
SEDIMENT -LADEN RUNOFF FROM SHEET FLOW AS INDICATED ON THE E&SC PLANS. ALL MAINTENANCE
PRACTICES SHALL FOLLOW THE GUIDELINES SET IN VESCH STANDARD 3.05.
STORM DRAIN INLET PROTECTION - 3.07
STORM DRAIN INLETS SHALL BE PROTECTED DURING CONSTRUCTION BY SILT FENCE, FILTERING,
SEDIMENT -LADEN WATER BEFORE ENTERING STORM NETWORK. ALL MAINTENANCE PRACTICES SHALL
FOLLOW THE GUIDELINES SET IN VESCH STANDARD 3.07.
TOPSOILING - 3.30
AREAS OF THE SITE MAY REQUIRE TOPSOILING TO PROVIDE A SUITABLE GROWTH MEDIUM FOR
VEGETATION STABILIZATION. A TEMPORARY TOPSOIL STOCKPILE SHALL BE INSTALLED AS SHOWN ON
SHEET 7. TOPSOILING PLACEMENT AND INSTALLATION SHALL FOLLOW THE GUIDELINES SET IN VESCH
STANDARD 3.30.
TEMPORARY SEEDING - 3.31
CERTAIN AREAS OF THE SITE WILL BE ROUGH GRADED AS A FIRST STAGE OF CONSTRUCTION. FINISH
GRADING WILL OCCUR NEAR PROJECT COMPLETION. THESE AREAS SHALL BE SEEDED TEMPORARILY WITH
FAST GERMINATING GRASSES TO REDUCE EROSION POTENTIAL. DIVERSIONS, FILL DIVERSIONS, DIVERSION
DIKES AND THE SEDIMENT BASIN EMBANKMENT SHALL ALSO RECEIVE TEMPORARY SEEDING.
TEMPORARY SEEDING APPLICATIONS SHALL FOLLOW THE GUIDELINES SET IN VESCH STANDARD 3.31.
PERMANENT SEEDING - 3.32
IMMEDIATELY FOLLOWING FINISH GRADING, PERMANENT VEGETATION SHALL BE APPLIED IN
ACCORDANCE TO THE GUIDELINES IN THE VESCH STANDARD 3.32 (PIEDMONT AREA) AND PER THE E&SC
DETAILS IN THIS PLAN. PERMANENT SEEDING APPLICATIONS SHALL FOLLOW THE GUIDELINES SET IN
VESCH STANDARD 3.32.
MULCHING - 3.35
IN AREAS THAT REQUIRE SUPPLEMENTAL EROSION CONTROL TO PROMOTE GROWTH OF VEGETATION OR
TO REDUCE VELOCITIES FROM OVERLAND FLOW, MULCH MAY BE USED AS AN ALTERNATIVE. ANY MULCH
APPLICATIONS SHALL FOLLOW THE GUIDELINES SET IN VESCH STANDARD 3.35.
SOIL STABILIZATION BLANKETS AND MATTING - 3.36
SOIL STABILIZATION BLANKETS AND MATTING MAY BE USED AS AN ALTERNATIVE TO TEMPORARY AND
PERMANENT SEEDING OR IN CRITICAL AREAS WITH STEEP CUT OR FILL SLOPES. BLANKET AND MATTING
STABILIZATION MAY BE USED PER THE DIRECTION OF THE E&SC INSPECTOR. ANY BLANKET AND MATTING
APPLICATION SHALL FOLLOW THE GUIDELINES SET IN VESCH STANDARD 3.36.
DUST CONTROL - 3.39
DUST CONTROL APPLICATIONS MAY BE EMPLOYED WHEN SURFACE AND AIR MOVEMENT OF DUST
RESULTING FROM CONSTRUCTION BECOMES AN ISSUE. DUST CONTROL APPLICATIONS SHALL FOLLOW
THE GUIDELINES SET IN VESCH STANDARD 3.39.
CONSTRUCTION SEQUENCE
1. FLAG THE LIMITS OF DISTURBANCE SHOWN ON THE EROSION AND SEDIMENT CONTROL PLAN PRIOR
TO A PRE -CONSTRUCTION MEETING WITH CERTIFIED PERSONNEL AS IT PERTAINS TO THE VIRGINIA
STORMWATER MANAGEMENT PROGRAM (VSMP) REGULATIONS AND IN ACCORDANCE WITH THE
ANNUAL STANDARDS AND SPECIFICATIONS FOR EROSION AND SEDIMENT CONTROL AND
STORMWATER MANAGEMENT (TE VEP 8000). A PRE -CONSTRUCTION MEETING WITH THE
CONTRACTOR, PROJECT MANAGER, AND CERTIFIED EROSION AND SEDIMENT CONTROL INSPECTOR
WILL BE SCHEDULED BY DOMINION.
2. DURING THE PRE -CONSTRUCTION MEETING, THE CERTIFIED EROSION AND SEDIMENT CONTROL
INSPECTOR SHALL CHECK THE FLAGGING DESIGNATING THE LIMITS OF DISTURBANCE.
3. INSTALL THE CONSTRUCTION ENTRANCE.
4. INSTALL ALL OTHER PERIMETER DEVICES SUCH AS SILT FENCE.
5. CLEAR, GRUB AND REMOVE VEGETATION AS INDICATED IN THE EROSION AND SEDIMENT CONTROL
PLAN ONCE ALL EROSION CONTROL DEVICES ARE FUNCTIONING AND IN PLACE.
6. PLACE AS NEEDED TEMPORARY TOPSOIL STOCKPILE AND PROTECT WITH SILT FENCE AND
TEMPORARY SEEDING.
7. DEMO EXISTING STORMWATER NETWORK AND RETAINING WALL AS SHOWN ON THE EROSION &
SEDIMENT CONTROL AND DEMOLITION PLAN.
8. FILL THE SITE PER THE GRADING SHOWN IN THE GRADING AND DRAINAGE PLAN. ENSURE SURFACE
ROUGHENING IS APPLIED TO 3:1 FILL SLOPES.
9. INSTALL LEVEL SPREADERS AND EXPAND UPON THE EXISTING STORM SEWER NETWORK AS DEPICTED
IN THE GRADING & DRAINAGE PLANS.
10. APPLY TEMPORARY SEEDING TO ANY DISTURBED AREAS THAT REMAIN DORMANT FOR MORE
THAN SEVEN (7) DAYS.
11. PERFORM FINAL SITE GRADING AS SHOWN ON PLANS.
12. INSTALL A FOUR (4) INCH THICK LAYER OF VDOT #57 STONE COURSE AGGREGATE SITE STONE,
TWELVE (12) INCH THICK VDOT No. 21A COMPACTED BASE COURSE TO ACCESS ROADS AND
SUBSTATION SECURITY FENCE PER SHEET 012 AND THE DETAILS SHOWN ON SHEET 018. APPLY
PERMANENT SEEDING TO REMAINING GRADED AREAS NOT STABILIZED BY STONE COVER.
13. NO EROSION AND SEDIMENT CONTROL DEVICES SHALL BE REMOVED UNTIL THE SITE IS DEEMED
STABILIZED AND PER THE APPROVAL OF THE CERTIFIED EROSION AND SEDIMENT CONTROL
INSPECTOR.
TOTAL DISTURBED AREA: 2.69 ACRES
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REVISIONS
DATE I DESCRIPTION
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EROSION & SEDIMENT CONTROL
GENERAL NOTES AND NARRATIVE
HOLLYMEADE SUBSTATION EXPANSION
ALBEMARLE COUNTY VIRGINIA
OPERATIONAL REGION B/M No. SCALE NTS
PROJECT NAME DATE SHEET: 003
DESIGNER
PROJECT ENGINEER DRAWING:
APPROVED BY R220236-00-000-00-C-001
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VIRGINIA EROSION AND SEDIMENT CONTROL MINIMUM STANDARDS
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MINIMUM STANDARDS
THIS SECTION IDENTIFIES THE MINIMUM EROSION AND SEDIMENT STANDARDS THAT THE PROJECT NEEDS TO
MEET ACCORDING TO VIRGINIA'S EROSION AND SEDIMENT CONTROL LAW AND REGULATIONS
(4VAC50-30-40).
MINIMUM STANDARD 1. PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED
AREAS WITHIN SEVEN DAYS AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE. TEMPORARY
SOIL STABILIZATION SHALL BE APPLIED WITHIN SEVEN DAYS TO DENUDED AREAS THAT MAY NOT BE AT FINAL
GRADE BUT WILL REMAIN DORMANT FOR LONGER THAN 14 DAYS. PERMANENT STABILIZATION SHALL BE
APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE YEAR AND PROVIDED AS THE SITE
IS BROUGHT TO GRADE.
M APPLICABLE ❑ NOT APPLICABLE
PROJECT COMPLIANCE: TEMPORARY AND PERMANENT SEEDING SPECIFICATIONS HAVE BEEN INCLUDED AS A
VEGETATIVE MEASURE. REFER TO E&SC PLANS AND DETAILS.
MINIMUM STANDARD 2. DURING CONSTRUCTION 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 BORROW AREAS AND SOIL INTENTIONALLY TRANSPORTED FROM THE PROJECT SITE.
M APPLICABLE ❑ NOT APPLICABLE
PROJECT COMPLIANCE: POTENTIAL STOCKPILE AREAS ARE TO BE KEPT ON -SITE AND WITHIN THE LIMITS OF
DISTURBANCE UNDER THE CONTROL OF EROSION AND SEDIMENT CONTROL MEASURES.
MINIMUM STANDARD 3. A PERMANENT VEGETATIVE COVER SHALL BE ESTABLISHED ON DENUDED AREAS
NOT OTHERWISE PERMANENTLY STABILIZED. PERMANENT VEGETATION SHALL NOT BE CONSIDERED
ESTABLISHED UNTIL A GROUND COVER IS ACHIEVED THAT, IS UNIFORM, MATURE ENOUGH TO SURVIVE AND
WILL INHIBIT EROSION.
M APPLICABLE ❑ NOT APPLICABLE
PROJECT COMPLIANCE: PERMANENT SEEDING WILL BE PROVIDED ON ANY DENUDED AREA ONCE THE SITE
HAS BEEN BROUGHT TO FINAL GRADE.
MINIMUM STANDARD 4. SEDIMENT BASINS 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.
M APPLICABLE ❑ NOT APPLICABLE
PROJECT COMPLIANCE: IN ACCORDANCE WITH THE CONSTRUCTION SEQUENCE SILT FENCE SHALL BE
INSTALLED PRIOR TO MASS GRADING OR UP GRADIENT LAND DISTURBANCES.
MINIMUM STANDARD 5. STABILIZATION MEASURES SHALL BE APPLIED TO EARTHEN STRUCTURES SUCH AS
DAMS, DIKES AND DIVERSIONS IMMEDIATELY AFTER INSTALLATION.
M APPLICABLE ❑ NOT APPLICABLE
PROJECT COMPLIANCE: DAMS OR OTHER EARTHEN MEASURE SHALL BE STABILIZED IN ACCORDANCE WITH
MINIMUM STANDARD 1.
MINIMUM STANDARD 6. SEDIMENT TRAPS AND SEDIMENT BASINS SHALL BE DESIGNED AND CONSTRUCTED
BASED UPON THE TOTAL DRAINAGE AREA TO BE SERVED BY THE TRAP OR BASIN.
A.THE MINIMUM STORAGE CAPACITY OF A SEDIMENT TRAP SHALL BE 134 CUBIC YARDS PER ACRE OF
DRAINAGE AREA AND THE TRAP SHALL ONLY CONTROL DRAINAGE AREAS LESS THAN THREE ACRES.
❑ APPLICABLE M NOT APPLICABLE
PROJECT COMPLIANCE: N/A
B.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 MINIMUM
STORAGE CAPACITY OF A SEDIMENT BASIN SHALL BE 134 CUBIC YARDS PER ACRE OF DRAINAGE AREA. THE
OUTFALL SYSTEM SHALL, AT A MINIMUM, MAINTAIN THE STRUCTURAL INTEGRITY OF THE BASIN DURING A
TWENTY-FIVE YEAR STORM OF 24-HOUR DURATION. RUNOFF COEFFICIENTS USED IN RUNOFF CALCULATIONS
SHALL CORRESPOND TO A BARE EARTH CONDITION OR THOSE CONDITIONS EXPECTED TO EXIST WHILE THE
SEDIMENT BASIN IS UTILIZED.
❑ APPLICABLE M NOTAPPLICABLE
PROJECT COMPLIANCE: N/A
MINIMUM STANDARD 7. CUT AND FILL SLOPES SHALL BE DESIGNED AND CONSTRUCTED IN A MANNER THAT
WILL MINIMIZE EROSION. SLOPES THAT ARE FOUND TO BE ERODING EXCESSIVELY WITHIN ONE YEAR OF
PERMANENT STABILIZATION SHALL BE PROVIDED WITH ADDITIONAL SLOPE STABILIZING MEASURES UNTIL
THE PROBLEM IS CORRECTED.
M APPLICABLE ❑ NOT APPLICABLE
PROJECT COMPLIANCE: ANY FILL SLOPE THAT MAY ERODE WILL BE MONITORED AND ADDITIONAL
STABILIZATION WILL BE ADDED IF NEEDED.
MINIMUM STANDARD 8. CONCENTRATED RUNOFF SHALL NOT FLOW DOWN CUT OR FILL SLOPES UNLESS
CONTAINED WITHIN AN ADEQUATE TEMPORARY OR PERMANENT CHANNEL, FLUME OR SLOPE DRAIN
STRUCTURE.
❑ APPLICABLE M NOTAPPLICABLE
PROJECT COMPLIANCE: N/A
MINIMUM STANDARD 9. WHENEVER WATER SEEPS FROM A SLOPE FACE, ADEQUATE DRAINAGE OR OTHER
PROTECTION SHALL BE PROVIDED.
M APPLICABLE ❑ NOT APPLICABLE
PROJECT COMPLIANCE: INADEQUATE DRAINAGE SHALL BE CORRECTED PRIOR TO STABILIZATION.
MINIMUM STANDARD 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.
M APPLICABLE ❑ NOTAPPLICABLE
PROJECT COMPLIANCE: CULVERT INLET AND INLET PROTECTION TO BE INSTALLED. REFER TO E&SC PLANS
AND DETAILS.
MINIMUM STANDARD 11. BEFORE NEWLY CONSTRUCTED STORMWATER CONVEYANCE CHANNELS OR PIPES
ARE MADE OPERATIONAL, ADEQUATE OUTLET PROTECTION AND ANY REQUIRED TEMPORARY OR
PERMANENT CHANNEL LINING SHALL BE INSTALLED IN BOTH THE CONVEYANCE CHANNEL AND RECEIVING
CHANNEL.
❑ APPLICABLE M NOTAPPLICABLE
PROJECT COMPLIANCE: N/A
MINIMUM STANDARD 12. WHEN WORK IN A LIVE WATERCOURSE IS PERFORMED, PRECAUTIONS SHALL BE
TAKEN TO MINIMIZE ENCROACHMENT, CONTROL SEDIMENT TRANSPORT AND STABILIZE THE WORK AREA TO
THE GREATEST EXTENT POSSIBLE DURING CONSTRUCTION. NONERODIBLE MATERIAL SHALL BE USED FOR THE
CONSTRUCTION OF CAUSEWAYS AND COFFERDAMS. EARTHEN FILL MAY BE USED FOR THESE STRUCTURES IF
ARMORED BY NONERODIBLE COVER MATERIALS.
❑ APPLICABLE M NOTAPPLICABLE
PROJECT COMPLIANCE: N/A
MINIMUM STANDARD 13. WHEN A LIVE WATERCOURSE MUST BE CROSSED BY CONSTRUCTION VEHICLES
MORE THAN TWICE IN ANY SIX-MONTH PERIOD, A TEMPORARY VEHICULAR STREAM CROSSING
CONSTRUCTED OF NONERODIBLE MATERIAL SHALL BE PROVIDED.
❑ APPLICABLE M NOTAPPLICABLE
PROJECT COMPLIANCE: N/A
MINIMUM STANDARD 14. ALL APPLICABLE FEDERAL, STATE, AND LOCAL REGULATIONS PERTAINING TO
WORKING IN OR CROSSING LIVE WATERCOURSES SHALL BE MET.
❑ APPLICABLE M NOTAPPLICABLE
PROJECT COMPLIANCE: N/A
MINIMUM STANDARD 15. THE BED AND BANKS OF A WATERCOURSE SHALL BE STABILIZED IMMEDIATELY
AFTER WORK IN THE WATERCOURSE IS COMPLETED.
❑ APPLICABLE M NOTAPPLICABLE
PROJECT COMPLIANCE: N/A
MINIMUM STANDARD 16. UNDERGROUND UTILITY LINES SHALL BE INSTALLED IN ACCORDANCE WITH THE
FOLLOWING STANDARDS IN ADDITION TO OTHER
APPLICABLE CRITERIA:
A. NO MORE THAN 500 LINEAR FEET OF TRENCH MAY BE OPENED AT ONE TIME.
B. EXCAVATED MATERIAL SHALL BE PLACED ON THE UPHILL SIDE OF TRENCHES.
C. EFFLUENT FROM DEWATERING OPERATIONS SHALL BE FILTERED OR PASSED THROUGH AN APPROVED
SEDIMENT TRAPPING DEVICE, OR BOTH, AND DISCHARGED IN A MANNER THAT DOES NOT ADVERSELY
AFFECT FLOWING STREAMS OR OFF -SITE PROPERTY.
D. MATERIAL USED FOR BACKFILLING TRENCHES SHALL BE PROPERLY COMPACTED IN ORDER TO MINIMIZE
EROSION AND PROMOTE STABILIZATION.
E. RESTABILIZATION SHALL BE ACCOMPLISHED IN ACCORDANCE WITH THESE REGULATIONS.
F. APPLICABLE SAFETY REGULATIONS SHALL BE COMPLIED WITH.
M APPLICABLE ❑ NOT APPLICABLE
PROJECT COMPLIANCE: ALL REGULATIONS PERTAINING TO TRENCHING WILL BE MET AND FOLLOWED ON
THIS SITE.
MINIMUM STANDARD 17. WHERE CONSTRUCTION VEHICLE ACCESS ROUTES INTERSECT PAVED OR 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 PAVED OR PUBLIC ROAD SURFACE,
THE ROAD SURFACE 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 ALLOWED ONLY AFTER SEDIMENT IS REMOVED IN THIS
MANNER. THIS PROVISION SHALL APPLY TO INDIVIDUAL DEVELOPMENT LOTS AS WELL AS TO LARGER
LAND -DISTURBING ACTIVITIES.
M APPLICABLE ❑ NOT APPLICABLE
PROJECT COMPLIANCE: SEDIMENT TRANSPORTED ONTO PAVED PARKING FACILITIES AND PUBLIC ROADS
WILL BE REMOVED AT THE END OF EACH WORK DAY. IN ADDITION, A CONSTRUCTION ENTRANCE WILL BE
USED AS SHOWN ON THE APPROVED EROSION AND SEDIMENT CONTROL PLANS.
MINIMUM STANDARD 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 AUTHORITY. TRAPPED
SEDIMENT AND THE DISTURBED SOIL AREAS RESULTING FROM THE DISPOSITION OF TEMPORARY MEASURES
SHALL BE PERMANENTLY STABILIZED TO PREVENT FURTHER EROSION AND SEDIMENTATION. ALL
TEMPORARY EROSION AND SEDIMENT CONTROL DEVICES WILL BE REMOVED AFTER 30 DAY OF FINAL SITE
STABILIZATION OR AFTER THE TEMPORARY DEVICES ARE NO LONGER NEEDED.
M APPLICABLE ❑ NOT APPLICABLE
PROJECT COMPLIANCE: ALL TEMPORARY EROSION AND SEDIMENT CONTROL DEVICES WILL BE REMOVED
AFTER 30 DAY OF FINAL SITE STABILIZATION OR AFTER THE TEMPORARY DEVICES ARE NO LONGER NEEDED
UPON THE APPROVAL OF THE CERTIFIED EROSION AND SEDIMENT CONTROL INSPECTOR.
MINIMUM STANDARD 19. PROPERTIES AND WATERWAYS DOWNSTREAM FROM DEVELOPMENT SITES SHALL
BE PROTECTED FROM SEDIMENT DEPOSITION, EROSION AND DAMAGE DUE TO INCREASE IN VOLUME,
VELOCITY AND PEAK FLOW RATE OF STORMWATER RUNOFF FOR THE STATED FREQUENCY STORM OF
24-HOUR DURATION IN ACCORDANCE WITH THE FOLLOWING STANDARDS AND CRITERIA:
A. CONCENTRATED STORMWATER RUNOFF LEAVING A DEVELOPMENT SITE SHALL BE DISCHARGED DIRECTLY
INTO AN ADEQUATE NATURAL OR MAN-MADE RECEIVING CHANNEL, PIPE OR STORM SEWER SYSTEM.
FOR THOSE SITES WHERE RUNOFF IS DISCHARGED INTO A PIPE OR PIPE SYSTEM, DOWNSTREAM STABILITY
ANALYSES AT THE OUTFALL FOR THE PIPE OR PIPE SYSTEM SHALL BE PERFORMED.
B. ADEQUACY OF ALL CHANNELS AND PIPES SHALL BE VERIFIED IN THE FOLLOWING MANNER:
(1) THE APPLICANT SHALL DEMONSTRATE THAT THE TOTAL DRAINAGE AREA TO THE POINT OF ANALYSIS
WITHIN THE CHANNEL IS ONE HUNDRED TIMES GREATER THAN THE CONTRIBUTING DRAINAGE AREA OF
THE PROJECT IN QUESTION; OR
(2)(A) NATURAL CHANNELS SHALL BE ANALYZED BY THE USE OF A TWO-YEAR STORM TO VERIFY THAT
STORMWATER WILL NOT OVERTOP CHANNEL BANKS NOR CAUSE EROSION OF CHANNEL BED OR BANK, -
AND
(B) ALL PREVIOUSLY CONSTRUCTED MAN MADE CHANNELS SHALL BE ANALYZED BY THE USE OF A
TEN-YEAR STORM TO VERIFY THAT STORMWATER WILL NOT OVERTOP ITS BANKS AND BY THE USE OF A
TWO-YEAR STORM TO DEMONSTRATE THAT STORMWATER WILL NOT CAUSE EROSION OF CHANNEL BED
OR BANKS AND
(C) PIPES AND STORM SEWER SYSTEMS SHALL BE ANALYZED BY THE USE OF A TEN-YEAR STORM TO
VERIFY THAT STORMWATER WILL BE CONTAINED WITHIN THE PIPE OR SYSTEM.
C. IF EXISTING NATURAL RECEIVING CHANNELS OR PREVIOUSLY CONSTRUCTED MAN-MADE CHANNELS OR
PIPES ARE NOT ADEQUATE THE APPLICANT SHALL:
(1) IMPROVE THE CHANNEL TO A CONDITION WHERE A TEN-YEAR STORM WILL NOT OVERTOP THE BANKS
AND A TWO YEAR STORM WILL NOT CAUSE EROSION TO THE CHANNEL BED OR BANKS; OR
(2) IMPROVE THE PIPE SYSTEM TO A CONDITION WHERE THE TEN YEAR STORM IS CONTAINED WITHIN
THE APPURTENANCES; OR
(3) DEVELOP A SITE DESIGN THAT WILL NOT CAUSE THE PRE -DEVELOPMENT PEAK RUNOFF RATE FROM A
TWO YEAR STORM TO INCREASE WHEN RUNOFF OUTFALLS INTO A NATURAL CHANNEL OR WILL NOT
CAUSE THE PRE -DEVELOPMENT PEAK RUNOFF RATE FROM A TEN YEAR STORM TO INCREASE WHEN
RUNOFF OUTFALLS INTO A MAN MADE CHANNEL; OR
(4) PROVIDE A COMBINATION OF CHANNEL IMPROVEMENT, STORMWATER DETENTION OR OTHER
MEASURES WHICH IS SATISFACTORY TO THE PLAN APPROVING AUTHORITY TO PREVENT DOWNSTREAM
EROSION.
D. THE APPLICANT SHALL PROVIDE EVIDENCE OF PERMISSION TO MAKE THE IMPROVEMENT.
E. ALL HYDROLOGIC ANALYSES SHALL BE BASED ON EXISTING WATERSHED CHARACTERISTICS AND THE
ULTIMATE DEVELOPMENT OF THE SUBJECT PROJECT.
F. IF THE APPLICANT CHOOSES AN OPTION THAT INCLUDES STORMWATER DETENTION HE SHALL OBTAIN
APPROVAL FROM THE LOCALITY OF A PLAN FOR MAINTENANCE OF THE DETENTION FACILITIES. THE PLAN
SHALL SET FORTH THE MAINTENANCE REQUIREMENTS OF THE FACILITY AND THE PERSON RESPONSIBLE
FOR PERFORMING THE MAINTENANCE.
G. OUTFALL FROM A DETENTION FACILITY SHALL BE DISCHARGED TO A RECEIVING CHANNEL, AND ENERGY
DISSIPATERS SHALL BE PLACED AT THE OUTFALL OF ALL DETENTION FACILITY AS NECESSARY TO PROVIDE
A STABILIZED TRANSITION FROM THE FACILITY TO THE RECEIVING CHANNEL.
H. ALL ONSITE CHANNELS MUST BE VERIFIED TO BE ADEQUATE.
I. INCREASED VOLUMES OF SHEET FLOWS THAT MAY CAUSE EROSION OR SEDIMENTATION ON ADJACENT
PROPERTY SHALL BE DIVERTED TO A STABLE OUTLET, ADEQUATE CHANNEL, PIPE OR PIPE SYSTEM, OR TO
A DETENTION FACILITY.
J. IN APPLYING THESE STORMWATER RUNOFF CRITERIA, INDIVIDUAL LOTS OR PARCELS IN A RESIDENTIAL,
COMMERCIAL OR INDUSTRIAL DEVELOPMENT SHALL NOT BE CONSIDERED TO BE SEPARATE
DEVELOPMENT PROJECTS. INSTEAD, THE DEVELOPMENT, AS A WHOLE, SHALL BE CONSIDERED TO BE A
SINGLE DEVELOPMENT PROJECT. HYDROLOGIC PARAMETERS THAT REFLECT THE ULTIMATE
DEVELOPMENT CONDITION SHALL BE USED IN ALL ENGINEERING CALCULATIONS.
K. ALL MEASURES USED TO PROTECT PROPERTIES AND WATERWAYS SHALL BE EMPLOYED IN A MANNER
WHICH MINIMIZES IMPACTS ON THE PHYSICAL, CHEMICAL AND BIOLOGICAL INTEGRITY OF RIVERS,
STREAMS, AND OTHER WATERS OF THE STATE.
M APPLICABLE ❑ NOT APPLICABLE
L. ANY PLAN APPROVED PRIOR TO JULY 1, 2014, THAT PROVIDES FOR STORMWATER MANAGEMENT THAT
ADDRESSES ANY FLOW RATE CAPACITY AND VELOCITY REQUIREMENTS FOR NATURAL OR MAN-MADE
CHANNELS SHALL SATISFY THE FLOW RATE CAPACITY AND VELOCITY REQUIREMENTS FOR NATURAL OR
MAN-MADE CHANNELS IF THE PRACTICES ARE DESIGNED TO (1) DETAIN THE WATER QUALITY VOLUME
AND TO RELEASE IT OVER 48 HOURS; (11) DETAIN AND RELEASE OVER A 24-HOUR PERIOD THE EXPECTED
RAINFALL RESULTING FROM THE ONE YEAR, 24-HOUR STORM; AND (111) REDUCE THE ALLOWABLE PEAK
FLOW RATE RESULTING FROM THE 1.5, 2, AND 10-YEAR, 24-HOUR STORMS TO A LEVEL THAT IS LESS THAN
OR EQUAL TO THE PEAK FLOW RATE FROM THE SITE ASSUMING IT WAS IN A GOOD FORESTED
CONDITION, ACHIEVED THROUGH MULTIPLICATION OF THE FORESTED PEAK FLOW RATE BY A REDUCTION
FACTOR THAT IS EQUAL TO THE RUNOFF VOLUME FROM THE SITE WHEN IT WAS IN A GOOD FORESTED
CONDITION DIVIDED BY THE RUNOFF VOLUME FROM THE SITE IN ITS PROPOSED CONDITION, AND SHALL
BE EXEMPT FROM ANY FLOW RATE CAPACITY AND VELOCITY REQUIREMENTS FOR NATURAL OR
MAN-MADE CHANNELS AS DEFINED IN ANY REGULATIONS PROMULGATED PURSUANT TO 62.1-44.15:54
OR 62.1-44.15:65 OF THE ACT.
❑ APPLICABLE M NOT APPLICABLE
M. FOR PLANS APPROVED ON AND AFTER JULY 1, 2014, THE FLOW RATE CAPACITY AND VELOCITY
REQUIREMENTS OF 62.1-44.15:52 A OF THE ACT AND THIS SUBSECTION SHALL BE SATISFIED BY
COMPLIANCE WITH WATER QUANTITY REQUIREMENTS IN THE STORMWATER MANAGEMENT ACT
62.1-44.15:24 ET SEQ. OF THE CODE OF VIRGINIA) AND ATTENDANT REGULATIONS, UNLESS SUCH
LAND -DISTURBING ACTIVITIES ARE IN ACCORDANCE WITH 9VAC25-870-48 OF THE VIRGINIA
STORMWATER MANAGEMENT PROGRAM (VSMP) REGULATIONS.
❑x APPLICABLE ❑ NOT APPLICABLE
N. COMPLIANCE WITH THE WATER QUANTITY MINIMUM STANDARDS SET OUT IN 9VAC25-870-66 OF THE
VIRGINIA STORMWATER MANAGEMENT PROGRAM (VSMP) REGULATIONS SHALL BE DEEMED TO SATISFY
THE REQUIREMENTS OF SUBDIVISION 19 OF THIS SUBSECTION.
M APPLICABLE ❑ NOT APPLICABLE
PROJECT COMPLIANCE: SEE SWM NARRATIVE ON SHEET 15 FOR SWM CALCULATIONS.
REVISIONS
REV I DATE I DESCRIPTION
.00 Dominion
Energy
y
gaiconsultants
EROSION & SEDIMENT CONTROL
MINIMUM STANDARDS AND DETAILS
HOLLYMEADE SUBSTATION EXPANSION
ALBEMARLE COUNTY VIRGINIA
OPERATIONAL REGION B/M No. SCALE NTS
PROJECT NAME DATE SHEET: 004
DESIGNER
PROJECT ENGINEER DRAWING:
APPROVED BY R220236-00-000-00-C-OOZ
IN
C
3
0
8 1 7
6 1 5
4 1 3
2
I
8 1 7
Wi
4
2
2
1
0
C
3
A
1992 3.01
a
••••iiiiiii• �ii�•iiiiiiiil
••••i�•i i i i i i i i i i!�•i•�•i•��i
ly••••••A.•••••••.h ••••• T•`
yyegyb•••dP �••d�
LL.-4•ddddd-•d •d.4a
\
i•Sii•• ••iiiiii
i i i •i ;*-:1 •�•i i i4
••••••, ••••••4M4••••••••'s•
. •4••b� dbb••h••4•••deP•
.6•-•-•d .•.•.4•.•.•.•ddd.•-
V
ram,
Mr. 4
�=- �z�GL�
� •
`
.. :�
.'4
s
A.
Source: Adapted from Conwed Plastics and Plate 3.01-1
VDOT Road and Bridge Standards
TE VEP 8000-17-00
3
TABLE 3.31-C
TEMPORARY SEEDING PLANT MATRQIAT S, SEEDING PAM, AND DATES
SEEDING RATE
NORTH°
Sourrip
3/1
5/1
sills
V15
5/1
911
.SPHCIBS
PLANT
CHARACTERISTICS
Anne
1D0o ns
m
m
m
m
m
le
4/30
Sf15
1111
4r30
911
11115
OATS
3 W. (up m 100 N.,
2 @c
X
-
-
X
-
U. 4ing vAtiMMe (A It, Noble).
(Av_e Ike AMI
not lees Ih.0 501h.)
RYE•
2 bu (up W 1101W.,
2.5 On.
X
-
X
X
X
Um ran lass HO a uJi.,z, wiohr
(zL
tut lore @evSO lbs.)
corer. Tolamw cold and low
mibue.
GERLId N Mllim
so the.
Approx. 1 @
-
X
-
-
X
-
Waem<amo annual. Dies M But
(SNaia jI&I
tmM. May W WdAd ..
ANNUAL RYEGRA33•
W Re.
IK I.
X
-
X
X
X
MAy Wadded ie mils. Will
oaa9m morn-mm�mi
®w cot nr � .taom.
W88PI140
IS IW.
Ss5 w.
-
X
-
-
X
-
W� PerenoiM. May
IAVEGRASS
booth. TOImatee Wt, dry Mopm
cunv14
and ardd, m(Mile soil¢. May be
added m Adam.
KOREAN
25 Its.
app.. 1%
X
X
-
X
X
-
warm Isom annual legnme.
I.ESPSDr1ZA`
lbs.
TolmMea acid mils. May W
aAM2kBenwlaw)
added m mixes.
A Nonhem Piedmont and Mountain region. Sea Plates 3.22-1 and 3.22-2.
b Southern Piedmont and Coastal Plain.
n May be used as a cover crop with spring seeding.
d May be used as a cover crop with fall Seeding.
X May be planted between these data.
- May Do be planted between these dates.
TABLE 3.39-A
ADHESIVES USED FOR DUST
CONTROL
Water
Application
Dilution
Type of
Rate
Adhesive
(Adhesive: Water)
Nozzle Gallons/Acre
Anionic
Asphalt Emulsion
7:1
Coarse Spray
1,200
Latex Emulsion
12.5:1
Fine Spray
235
Resin in Water
4:1
Fine Spray
300
Acrylic Emulsion
(Non -Traffic)
7:1
Coarse Spray
450
Acrylic Emulsion
(Traffic)
3.5:1
Coarse Spray
350
Source: Va. DSWC
3
7
1992
STONE CONSTRUCTION ENTRANCE 3.02
70' MIN.
t0•
B A IN.
EXISTING
GROUND EXISTING
12' 1B'
MI MIN. PAVEMENT
VDOT • 1
COARSE AGGREGATE B I MRSHRRCK
a'
MIN.
POSITIVE DRAINAGE TO IF REQUIRED
SEDIMENT TRAPPING DEVICE
MUST EXTEND FILL MOTH OF INOIESS AND
PLAN VIEW 1TiESS OPERATION
EXISTING 70' MIN. EXISTING
PAVEMENT
GROUND 3'
S.�
FILTER CLOTH 6• MIN. MOUNTABLE BERM
ELEVATION
TE VEP 8000-17-00
4
TABLE 3-VD
SITE SPECIFIC SEEDING MDnVRES FOR PIEDMONT AREA
Total Lbs.
Minimum Care Lawn Per Acre
- Commercial or Residential 175-200 lbs.
- Kentucky 31 or Tuff -Type Tall Fescue 95-100%
- Improved Perennial Ryeglass 0-5%D
- Kentucky Bluegrass 0-5%
High -Maintenance Lawn 200 250 lbs.
- Kentucky 31 or Turf -Type Talt Fescue 100%
General Slope (3:1 or less)
- Kentucky 31 Fescue 128 lbs.
- Red Top Grass 2 lbs.
- Seasonal Nurse Crop • 20 lbs.
150 lbs.
Low -Maintenance lope { to ner than 3.1)
- Kentucky 31 Fescue 108 lbs.
- Red Top Grass 2 lbs.
- Seasonal Nurse Crap A 20 lbs.
- Crownvetch •" 20 lbs,
150 Tbs.
Use seasonal nurse crop in accordance with seeding dates as stated below:
February 16th through April ...................... Annual Rye
May 1st through August 15th ..................... Foxtail Millet
August 16th through October ...................... Amoral Rye
November through February 15th................... Winter Rye
`• Substitute Sericea lespedeza for Crownvetcb east of Farmville Va. (May
through September use hulled Sericea, all other periods, use unhulled Sericea).
If Flatpea is used in lieu of Crowllvetch, increase rate to 30lbs./acre. All legume
seed must be properly inoculated. Weeping L.ovegrass Billy be added to any slope
or low -maintenance mix during warmer seeding periods; add 10-20 lbs./acre in
mixes.
111- 303
3
3.32
1992 3.05 1992
CONSTRUCTION OF A SILT FENCE
(WITHOUT WIRE SUPPORT)
1. SET THE STAKES. 2. EXCAVATE A 4" X 4" TRENCH
UPSLOPE ALONG THE LINE OF
STAKES.
FLOW
3. STAPLE FILTER MATERIAL
TO STAKES AND EXTEND
IT INTO THE TRENCH.
4. BACKFILL AND COMPACT
THE EXCAVATED SOIL.
SHEET FLOW INSTALLATION
(PERSPECTIVE VIEW)
POINTS A SHOULD BE HIGHER THAN POINT B.
Source: Adapted from Installation of Straw and Fabric Filter
Barriers for Sediment Control, Sherwood and Wyant
III - 25
1992
SILT FENCE DROP INLET
PROTECTION
2 X 41 VOOD FRAME
DROP MET
VITN GRATE
FRANC
a• lma ��y
GATHER
�^ EXCESS
UAT CORNERS
PERSPECTIVE VIEWS
ELEVATION OF STAKE AND
FABRIC ORIENTATION
SPECIFIC APPLICATION
DETAIL A
THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE THE
INLET DRAINS A RELATIVELY FLAT 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
Plate 3.05-2 Planning and Design Manual 1988
Ell -35
3.35
TABLE 3.35-A
ORGANIC MULCH MATERIALS AND APPLICATION RATES
RATES:
MULCHES:
Per Acre
Per 1000 sq. ft.NOTES:
Straw or Hay
1; - 2 tons
70 - 90 lbs.
Free from weeds and coarse
(Minimum 2
matter. Must be anchored.
tons for
Spread with mulch blower
winter cover)
or by hand.
Fiber Mulch
Minimum
35 lbs.
Do not use as mulch for
1500 lbs.
winter cover or during hot,
dry periods.* Apply as
slurry.
Com Stalks
4 - 6 tons
185 - 275 11hs.
Cut or shredded in 4-6"
lengths. Air-dried. Do not
use in fine turf areas. Apply
with mulch blower or by
hand.
Wood Chips
4 - 6 tons
185 - 275 lbs.
Free of coarse matter. Air-
dried. Treat with 12 lbs
nitrogen per ton. Do not
use in fine turf areas. Apply
with mulch blower, chip
handler, or by hand.
Bark Clips
50 - 70 cu.
1-2 cu. yds.
Free of coarse matter. Air -
or
yds.
dried. Do not use in fine
Shredded
turf areas. Apply with
Bark
mulch blower, chip handler,
or by hand.
a When fiber mulch is the only available mulch during periods when straw
should be used, apply at a minimum rate of 2000 lbs./ac. or 45 lbs./1000 sq. ft.
Source: Va. DSWC
5
III - 353
0
3.07
Plate 3.07-1
1992 3.36
TYPICAL ORIENTATION OF
TREA TMENT - I
(SOIL STABILIZATION BLANKET)
SHALLOW
ON SHALL OM SLOPES, STRIPS OF
NETTING PROTECTIVE 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 BEAM.
ON = SLOPES, APPLY
PROTECTIVE COVERING PARALLEL
TO THE DIRECTION OF FLOW
AND ANCHOR SECURELY.
_ -
BRING MATERIAL DOWN TO A LEVEL AREA BEFORE <-
TERMINATING THE INSTALLATION. TURN THE END
UNDER 4' AND STAPLE AT 1Y INTERVALS. � \
IN DITCHES, APPLY PROTECTIVE COVERING
PARALLEL TO THE DIRECTION OF F-M.
USE CHECK SLOTS /S REQUIRED. AVOID
JOINING MATERIAL W THE CENTER OF
THE DITCH IF AT ALL POSSIBLE.
TE VEP 8000-17-00
20
3
TABLE 3.30-A
CUBIC YARDS OF TOPSOIL REQUIRED
FOR APPLICATION TO VARIOUS DEPTHS
Depth
Per 1,000
inches
Square Feet Per Acre
1
3.1
134
2
6.2
268
3
9.3
403
4
12.4
537
5
15.5
672
6
18.6
806
Source: Va. DSWC
REVISIONS
y
galconsultants
REV DATE DESCRIPTION
Dominion
Energy
EROSION & SEDIMENT CONTROL
DETAILS
HOLLYMEADE SUBSTATION EXPANSION
ALBEMARLE COUNTY VIRGINIA
OPERATIONAL REGION B/M No. SCALE NTS
PROJECT NAME DATE SHEET: OO5
DESIGNER
PROJECT ENGINEER DRAWING:
APPROVED BY R220236-00-000-00-C-00%'
2 1
Le
A
8 7 6 5 4 2 2 1 1
/ I EROSION & SEDIMENT CONTROL AND
DEMOLITION PLAN (1 OF 31
NO, KEY SYMBOL TITLE
EXISTING MAJOR CONTOURS
v I I I I 1
- — — — — — — - EXISTING MINOR CONTOURS
N/F I I Z I I I I 142P PROPOSED MAJOR CONTOURS
D PARCEL 0..' I 7 I I I I MA
032✓O-01-00-01400 cn I I Pk
\ \ _ 1406DECATURDRIVE I = I p PROPOSED MINOR CONTOURS
--------------- STEVENM.MALONE M I I
/ \ _ ORLAUR/EDALE I M I I I
PR/MARYZON/NG' I TOPOGRAPHIC SURVEY BOUNDARY
CD
PLANNED RES/DENRAL O
DEVELOPMENT v I `
\ C/) / / \ \ \\ \ \\ �` —, \ \ \ EXISTING ADJACENT PROPERTY LINE
/ / / _ / \\ \ \ \ \ `\ W \ ( N/F I EXISTING SITE PROPERTY LINE
\ \ \------ G PARCEL/D.
— — — — ' \ 1z 032✓0-01-004150Q
\ \ �Cy 114160ECATUNSO 6 g EXISTING FENCE LINE
\ CASEYROS/NSOA}'&
REIKOIGAAAShT
PR/MARYZONF"
E
I r.
PROPOSED FENCE LINE
J \IPLNNDRES/DN AL
DEVELOPMENT�_J_
EXISTING OVERHEAD ELECTRIC
EXISTING UNDERGROUND ELECTRIC
EXISTING UNDERGROUND TELEPHONE
// UFO EXISTING FIBER OPTIC
__
— _ _ — — ^ — — — 1 \ \ \ \ \ \/ir II I i I `\ / / — — — N EXISTING TELECOMMUNICATION LINE
j�
- EDGE OF EXISTING GRAVEL
PROPOSED SUBSTATION PAD
EXISTING EDGE OF WATER
TREELINE
PROPOSED ACCESS ROAD CENTERLINE
/—-----J/\4g \�\\ \ �`I11� / / /
/
—/— — — — — — — —— — —� / /�\ S. �\ ��\ �� \ \ \ IIII / / // / // EXISTING RIP RAP
_
/ _ _ \_� III1 / / // � El EXISTING INLET
-------------------- — ✓ / \ \\ \\\� �\\\�_ \��rr l l/ I ❑ PROPOSED INLET
EXISTING CULVERT
EDGE OF EXISTING DITCH
I�°44'09"W f09.36)
o LIMIT OF DISTURBANCE
I
PROPOSED STORM SEWER
V/R/AELECTR/c8 — — — — — -- — — — — — I // I �� EXISTING POWER POLE AND GUY WIRE
PO ER COMPANY
%`'s \ \ 03200-00-00-03700 / / I I
ZONED: fANOR15
/ —!----- J --- III I\ \ I \ BENCHMARK
AREs72ACI / /� r--------- - +
III\ F EXISTING IRON ROD FOUND
3.02 ce CONSTRUCTION ENTRANCE
B
490, \ I I I ? l / I I I IIII / —1 _ / — d� I I •
REVISIONS y
9atconsultants
B
o
c / I UFO
REV DATE DESCRIPTION
_ Dominion
Al
/Energy
/ _ u<
`----------- ---->' EROSION & SEDIMENT CONTROL AND
NOTES: / \\ `\ �� �� �� /n /I / / — �► — I— — — — — — — DEMOLITION PLAN (1 OF 3)
MATCHLINE SHEET008
1. TOPOGRAPHIC INFORMATION SHOWN HERE IS BASED ON A TOPOGRAPHIC / \
FIELD SURVEY COMPLETED BY DRAPER ADEN ASSOCIATES DATED / \ \ \ \ \ \ \ I
MARCH2O22. / \ \ I \ / I / / c: I
A 2. SOURCE OF MERIDIAN: NAD83 BASED UPON A TOPOGRAPHIC SURVEY OF
HOLLYMEAD SUBSTATION BY RICHARD L. FRALIN, L.S. DATED 04/17/2013 / \ \\ \\ \ / I I /—r _ _ _ _ _ _ ///II I / / / \\ I �I HOLLYMEADE SUBSTATION EXPANSION
\ PROVIDED BY DOMINION ENERGY. / / II \
3. VERTICAL DATUM: BASED UPON A TOPOGRAPHIC SURVEY OF HOLLYMEAD y ALB EMARLE COUNTY V I RG I N IA
SUBSTATION BY RICHARD L. FRALIN, L.S. DATED 04/17/2013 PROVIDED BY y \ \ \ \ \ \ 1 ` — — — // III /I' / / -` \ 3 O 2HO
DOMINION ENERGY. � \\ \\ \ \ \ \\ I / / / III ✓ / / I OPERATIONAL REGION B/M No. SCALE 1"=20'
4. ELEVATION POINTS BASED ON TOP OF DIRT. s, / I I / / / \ PROJECT NAME DATE SHEET:
/ \ \ \ \ \ I I I I — _ SCALE: 1 — 20 006
5. CONTRACTOR SHALL MONITOR AND PROVIDE DUST CONTROL ON \ \ / / l I I I / / / \G�\ DESIGNER
PROJECT SITE AND ALONG SITE ACCESS OFF WORTH CROSSING DURING /' \ \\ \ `\ \ \ \ `\ `\ _ �' ` J'�I / / / / / \ PROJECT ENGINEER DRAWING:
CONSTRUCTION. / / \ \ \ \ \ _ / I _ II / / _ �— 20 0 20 40 APPROVED BY 20236-00-000-00-C-006-C
8 7 6 5 4 3 2 1
10
x
I
A
8 7 6 5 4 2 2 1
/ \ \ \\\\\ NOTES:
EROSION & SEDIMENT CONTROL AND
I
\ \\\ 1. TOPOGRAPHIC INFORMATION SHOWN HERE IS BASED ON ATOPOGRAPHIC DEMOLITION PLAN (2 OF 3) \\ \\\ \ /� \\�\ ` FIELD SURVEY COMPLETED BY DRAPER ADEN ASSOCIATES DATED NO. KEY SYMBOL TITLE
MARCH2O22. _
I EXISTING MAJOR CONTOURS
\ 2. SOURCE OF MERIDIAN: NAD83 BASED UPON A TOPOGRAPHIC SURVEY OF
cfl I I I \ \ HOLLYMEAD SUBSTATION BY RICHARD L. FRALIN, L.S. DATED 04/17/2013 _
\ N/F \ \ \ \ \ / / / \ \ \ \ �\ \ EXISTING MINOR CONTOURS
O I PAiP�EL/D: \ \ \ I \ \ \ \ \ \ ( ) / / / \ \ \ \ \ \ \ PROVIDED BY DOMINION ENERGY.
NF I w I I I I 032✓O-'Of- -olsoo I \ \ \ \ \ N� \ \ \\ \ \\ \ \ / / // \ \� \\ \\ \\\ \ 3. VERTICAL DATUM: BASED UPON A TOPOGRAPHIC SURVEY OF HOLLYMEAD PROPOSED MAJOR CONTOURS
I 14220ECATU R/VE SUBSTATION BY RICHARD L. FRALIN, L.S. DATED 04/17/2013 PROVIDED BY
Lu I Q \ \PARCEL /D.' \ \ \ / /
D PARCEL / I I MAR/SA GOOD \ I \ ) l / / \ \ \ \ \ \ \
032✓aol-000 = I I l I \ o32✓t,01-oao>eo0 \ \ \ I / DOMINION ENERGY.
406DECATUROR/uE \ PR/MARYZON/NG. \ \ r 1434DE-qATURDRIVE\ \ \ I I I / / ' / \ \ \ \ 4. ELEVATION POINTS BASED ON TOP OF DIRT. PROPOSED MINOR CONTOURS
W I P[ uNED RES/DENT/AL \ \ \ BR/AN OHNES &
rEVENM MA[ONE Z dLFUELOPMENT \ \ \ ✓ENN/FR[OHNES I \ \ \ \ \ \ I 1 / / / \ \ \ 5. CONTRACTOR SHALL MONITOR AND PROVIDE DUST CONTROL ON
OR LAUR/EDALE J I I I \ \ PR/MAR�CZON/NG \ \ \ I — — TOPOGRAPHIC SURVEY BOUNDARY
\ PROJECT SITE AND ALONG SITE ACCESS OFF WORTH CROSSING DURING
PR/MARYZON/NG.�
NNED RES/DENT/AL = I I \ \ PLANNEDRkS/DENT/AL \ —\ \ \ \ \ \ / / / / ) ) \ \ \ CONSTRUCTION. EXISTING ADJACENT PROPERTY LINE
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EXISTING FIBER OPTIC
EXISTING TELECOMMUNICATION LINE
EDGE OF EXISTING GRAVEL
PROPOSED SUBSTATION PAD
EXISTING EDGE OF WATER
�.
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-
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EXISTING RIP RAP
6
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EDGE OF EXISTING DITCH
-
LIMIT OF DISTURBANCE
18
PROPOSED STORM SEWER
4
18
PROPOSED LEVEL SPREADER
EXISTING POWER POLE AND GUY WIRE
BENCHMARK
EXISTING IRON ROD FOUND
y
REVISIONS
galconsultan[s
REV DATE DESCRIPTION
Dominion
Energy
SITE PLAN (3 OF 3)
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- - - - - - - - - - - - -------- --_ ---
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#21A COMPACTED GRAVEL 499.29
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S\A
N:6729441.81
E:11501958.74 E:11502023.16 LIMIT OF DISTURBANCE
EL=499.82' EL=499.40' PROPO4 SED LEVEL SPREADER
BENCHMARK
EXISTING POWER POLE AND GUY WIRE
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31 Ho-- 3H0 ENO OPERATIONAL REGION SCALE "=20'
T:SCALE. 1 PROJECTNAME DATE SHEEUzQ DESIGNER 013
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LENGTH
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483.85
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488.59
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N/A
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489.22
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4
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5
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124.4
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6
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N/A
488.93
N/A
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N/A
494.29
488.59
484.62
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9
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N/A
493.00
489.22
488.73
N/A
10
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N/A
493.00
489.31
489.31
N/A
11
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493.00
489.45
489.45
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12
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N/A
493.00
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489.76
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EXISTING MINOR CONTOURS
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PROPOSED MINOR CONTOURS
TOPOGRAPHIC SURVEY BOUNDARY
EXISTING ADJACENT PROPERTY LINE
EXISTING SITE PROPERTY LINE
EXISTING FENCE LINE
PROPOSED FENCE LINE
EXISTING OVERHEAD ELECTRIC
EXISTING UNDERGROUND ELECTRIC
EXISTING UNDERGROUND TELEPHONE
EXISTING FIBER OPTIC
EXISTING TELECOMMUNICATION LINE
EDGE OF EXISTING GRAVEL
PROPOSED SUBSTATION PAD
EXISTING EDGE OF WATER
TREELINE
PROPOSED ACCESS ROAD CENTERLINE
EXISTING RIP RAP
EXISTING INLET
PROPOSED INLET
EXISTING CULVERT
EDGE OF EXISTING DITCH
#21A COMPACTED GRAVEL
#57 STONE UNCOMPACTED GRAVEL
LIMIT OF DISTURBANCE
PROPOSED STORM SEWER
PROPOSED LEVEL SPREADER
EXISTING POWER POLE AND GUY WIRE
BENCHMARK
EXISTING IRON ROD FOUND
y
galconsultan[s
DATE I DESCRIPTION
Dominion
Energy
GRADING & DRAINAGE PLAN (2 OF 2)
HOLLYMEADE SUBSTATION EXPANSION
ALBEMARLE COUNTY VIRGINIA
OPERATIONAL REGION
B/M No.
SCALE
1"=20'
PROJECTF
NAME
DATE
SHEET: 0 4
DESIGNER
PROJECT ENGINEER
DRAWING:
20236-00-000-00-C-013-a
APPROVED BY
2
1
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DETAIL EQUIPMENT ACCESS ROAD
NOT TO SCALE
SEE NU I E 1 I I SEE NU I E 1 I
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18 FOR ILLUSTRATIVE PURPOSES ONLY
NOT TO SCALE
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241
503
2016 ROAD & BRIDGE STANDARDS
PLAN
(COVER REMOVED)
SEE NOTE
SEE NOTE 5.
SECTION B-B
PRECAST
NOTES (CONT.)
15. DI_7-------- NO GUTTER
DI-7A------- SINGLE GUTTER WHEN DROP INLET
S ON A GRADE.
DI-7B------ DOABLE GUTTER WHEN DROP INLET
S N A SAC BETWEEN TWO GRADES.
16. FOR DETAILS OF PRECAST DI-7 NOT SHOWN HEREON
SEE PRECAST UNIT ASSEMBLY DIAGRAM PAGE 103.
FOR PRECAST GENERAL NOTES PARE 7113.02 AND F R
APPLICABLE PRECAST BASE, RASHER AO TOP DETAILS,
PAGES 103.07 THRU 103.12.
17. GRATE BARS TO BE PARALLEL TO DITCH FLOW.
PIPE
12"
1 15"
1 IS-
1 24"
1 W.
35"
42"
MINIMUM DEPTH
2'-0"
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2'-&/y"
3'-1'
3'-T/t'
4'-2"
4' IT
CONCRETE MBIC YARDS.947
1.045
1143
1A3B
1.535
1.731
1.82]
- PUST (TYP.
)OST) PER SE
020-19-01
RATION PER
P-2020-19-01
NOTES DI-7, 7A 7B
1. DEPTH OF INLET (H) TO BE SHOWN ON PLANS.
2. THE "H" DIMENSK)N SHOWN ON THE STANDARDS
AND SPECIFIED ON THE PLANS WILL BE
MEASURED FROM THE INVERT OF THE OUTFALL
PIPE TO THE TOP OF THE STRUCTURE.
PLAN "H" DIMENSIONS ARE APPROXIMATE ONLY
FOR ESTIMATING PURPOSES AND THE ACTUAL
DIMENSIONS SHALL BE DETERMINED BY THE
CONTRACTOR FROM FELD CONOTTENS.
MAXIMUM DEPTH (H) TO BE 12'-B.
3. WHEN SPECIFIED ON THE PLANS THE INVERT IS
TO BE SHAPED IN ACCORDANCE WITH STANDARD
IS-1. THE COST OF FURNISHING AND PLACING ALL
MATERIALS INCIDENTAL TO THE SHAPING IS TO BE
INCLUDED IN THE BID PRICER FOR THE STRUCTURE.
4. IN THE EVENT THE INVERT OF THE OUTFALL
PIPE IS HIGHER THAN THE BOTTOM OF THE
STRUCTURE,THE INVERT OF THE STRUCTURE
SHALL BE SHAPED WITH CEMENT MORTAR TO
PREVENT STANDING OR PONDING OF WATER
IN THE STRUCTURE. THE COST OF FURNISHING
AND PLACING ALL MATERIALS INCIDENTAL TO
THE SHAPING IS TO BE INCLUDED IN THE BE
PRICE FOR THE STRUCTURE.
5. STEPS ME TO BE PROVIDED WHEN H IS 4'-0"
OR GREATER. FOR DETAILS SEE STANDARD ST-1.
B. REINFORCED CONCRETE FOOTING MAY BE
PRECAST OR CAST -IN -PLACE. TWO LIFTING
HOOKS OF FABRICATORS DESIGN TO BE
PROVIDED N PRECAST FOOTING
7. 4" DEPTH AGGREGATE 46 wa. OR EB X 6" WIDTH.
6. 3" DIAMETER WEEP HOLE WITH 12"XI2" PLASTIC
HARDWARE CLOTH /4' MESH OR GALVMZEO
STEEL WIRE, MINIMUM WIRE DIAMETER 0.03",
NUMBER 4 MESH HARDWARE CLOTH ANCHORED
FIRMLY TO THE OUTSIDE OF THE STRUCTURE.
9. DELEDEERENET(PBECSRCD IN PLACE).
HOOUWIL B
AT THE OPTION OF THE CONTRACTOR.
V. FOR DETAILS OF CONCRETE COVER.COLLAR AND
CRATE AND THE METHOD OF PLACING APPROACH
GUTTER SEE SHEET 2 OF 3.
R. CAST -IN PLACE CONCRETE IS TO BE CLASS A3
(3000 PSI). PRECAST CONCRETE IS TO BE
4000 PSI.
12. CONCRETE OUANTITIES SHOWN ARE FOR INDICATED
DEPTH IN) WITHOUT PIPES. THE MOUNT
DISPLACED BY PIPES MUST BE DEDUCTED TO
OBTAIN TRUE OUAiTITIES. FOR INLETS OF
DIFFERENT DEPTHS ADD OR SUBTRACT THE
APPROPIATE CUBIC YARDS OF CONCRETE FOR EACH
FOOT OF DEPTH.
13. PAVED DITCHES ME TO BE TRANSITIONED TO MEET
INLET GUTTER AS SHOWN IN STANDARD PG-2A
14. PROVIDE SAFETY SLABS WHEN SPECIFIED ON
THE PLANS.
INCREMENT PER FOOT OF ADDITIONAL DEPTH ... £ - 0.352 CU. YES' (12" - 36" PPE)
0.410 CU. YDS. (42" PIPE)
STANDARD MEDIAN DROP INLET ROAD AM BBRIDGETSTANDARDS
12" TO 42" PIPE REVISION DATE SHEET 1 OF 3
VIRGINIA DEPARTMENT OF TRANSPORTATION 10422
2016 ROAD & BRIDGE STANDARDS
6 DETAIL VDOT 0I-7
1 8 NOT TO SCALE
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MIN. 1/10 D - UNYIELDING
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MATERIAL
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MIN. 1/10 - EARTH
MIN BEDDING
MATERIAL
MAX. 24" MATERIAL
FOUNDATION SOFT, YIELDING, OR
NORMAL EARTH FOUNDATION
ROCK FOUNDATION
OTHERWISE UNSUITABLE MATERIAL
®BEDDING MATERIAL IN ACCORDANCE WITH EMBANKMENT
SECTION 302 OF THE ROAD MO BRIDGE ® NOTES:
SPECIFICATIONS.
REGULAR BACKFILL MATERIAL IN ACCORDANCE FOR GENERA. NOTES ON PIPE BEDDING,
CLASS I BACKFILL MATERIAL IN ACCORDANCE SEE INSTALLATION OF PIPE CULVERTS
WITH SECTION 302 OF THE ROAD AND BRIDGE
WITH SECTION 302 OF THE ROAD AND BRIDGE SPECIFICATIONS. AND STORM SEWERS GENERAL NOTES
SPECIFICATIONS. ON SHEET 107.00.
FOR AL OTHER PIPE REGULAR BACKFILL MATERIAL
FOR PLASTIC PIPE ' IN ACCORDANCE WITH SECTION 302 OF THE ROAD CRUSHED GLASS CONFORMING TO THE
6" MINIMUM CLASS I BACKFILL MATERIAL PLACED DIRECTLY AND BRIDGE SPECIFICATIONS. SIZE REQUIREMENTS FOR CRUSHER RUN
OVER PIPE AND 6" REGULAR BACKFILL MATERIAL, AGGREGATE SIZE 25 AND 28 MAY BE
OR 12" OF CLASS I BACK FILL MATERIAL, USED IN PLACE OF CLASS I BACKFILL.
IN ACCORDANCE WITH SECTION 302 OF THE ROAD AND BRIDGE
SPECIFICATIONS.
`VD❑T
H I I IL H
INSTALL. OF PIPE CULVERTS AND STORM SEWERS
SPECIFICATION
REFERENCE
ROAD AND BRIDGE STANDARDS
CIRC. PIPE BEDDING AND BACKFILL -METHOD "A"
302
SHEET 1 OF 4
REVISION DATE
07/19
VIRGINIA DEPARTMENT OF TRANSPORTATION
303
107.01
2U16 KOAU & BRIUGE S I ANUAHUS
7 DETAIL VDOT PB-1
1 8 NOT TO SCALE
REVISIONS
REV DATE DESCRIPTION
ism
Dominion
Energy
CONSTRUCTION DETAILS
y
galconsultan[s
HOLLYMEADE SUBSTATION EXPANSION
ALBEMARLE COUNTY VIRGINIA
OPERATIONAL REGION B/M No. SCALE NTS
PROJECTF NAME DATE SHEET: O1 H
DESIGNER
PROJECT ENGINEER DRAWING:
APPROVED BY 220236-00-000-00-C-01 F
A
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SUBJECT Hollymeade Substation Expansion SUBJECT Hollymeade Substation Expansion SUBJECT Hollymeade Substation Expansion SUBJECT Hollymeade Substation Expansion
DESIGNED BY: ELLISJR DATE 01/13/2023 PROJ. NO. R210961.01 DESIGNED BY: ELLISJR DATE 01/13/2023 PROJ. NO. R210961.01 DESIGNED BY: ELLISJR DATE 01/13/2023 PROJ. NO. R210961.01 DESIGNED BY: ELLISJR DATE 01/13/2023 PROJ. NO. R210961.01 L�
CHECKED BY: BARBESJ DATE 01/13/2023 SHEET NO._J__OF 6 ��lf CHECKED BY: BARBESJ DATE 01/13/2023 SHEET NO.__2__OF 6 CHECKED BY: BARBESJ DATE 01/13/2023 SHEET NO. 3 OF 6 N CHECKED BY: BARBESJ DATE 01/13/2023 SHEET NO.__4__OF 6 ��lf
gai consultants lgai€onsultants gai consultants gai consultants
INTRODUCTION:
D The Dominion Hollymeade Substation Expansion project, located in Mbermarle County, Virginia
will be constructed within the limits of Parcel 03200-00-00-03700 located at 3317 Worth Crossing
Road, Charlottesville, Virginia 22911. The switching station property is zoned R-1 & R-15
Residential and is composed of approximately 6.72 acres owned by Virginia Electric & Power
Company.
The Dominion Hollymeade Substation Expansion project consists of the renovation and
expansion of the existing switching substation to improve electrical service and reliability to
Albermarle County. This includes the expansion of the existing pad area with installation of new
equipment, foundations, retaining wall, and fence. Removal of existing equipment and identified
sections of fence will occur within the existing substation area.
The project will result in the land disturbance of approximately 2.69 acres and will include
approximately 2.19 acres of impervious gravel area. The Dominion Hollymead Substation
Expansion project will have a standard construction schedule and is anticipated to begin in Spring
2023, and the project duration is anticipated to last 12 months.
The proposed project must follow the Virginia Code §9VAC25-870 pertaining to Virginia
Stormwater Management Program (VSMP) Permit regulations, and the Virginia Erosion and
Sediment Control Regulations under §9VAC25-840. Under the technical criteria, the switching
station site design will have to meet requirements for water quality (§9VAC25-870-65), channel
protection (§9VAC25-870-66. B), and flood protection (§9VAC25-870-66.C) as it relates to post -
construction stormwater runoff.
EXISTING SITE CHARACTERISTICS:
The project will only impact parcel number 03200-00-00-03700, which is owned by Virginia
Electric & Power Company and is approximately 6.72 acres. Existing improvements on the project
site include an existing substation switching facility and gravel access; the remainder of the site
consists of forested and vegetated space.
EXISTING SOIL CHARACTERISTICS
Based on the Soil Survey report for Albemarle County, Virginia the soils consist primarily of 28C3
C Elioack Clay Loam, 7 to 15 percent slops, hydraulic soil group (HSG) B. The soils to the north of
the substation consist of 27B Elioack Loam, 2 to 7 percent slops, hydraulic soil group (HSG) B.
The soils northeast of the substation consist of 34C Glenleg Loam, 7 to 15 percent slopes,
Hydraulic soil group (HSG) B.
A
The USDA Soils Survey map has been included on Site Plan Sheet 3 for reference.
\\gaiconsultants.imal\BUPmjAEnergy\Dominion\R220236.00 - Dominion Hollymeade Sub\Working Docs\Engineering\E&SC SWM
Narra6ve\E&SC - SWM Narrative 01-13-2023
SUBJECT Hollvmeade Substation Exoansion
DESIGNED BY: ELLISJR DATE 01/13/2023 PROJ. NO. R210961.01 L�
CHECKED BY: BARBESJ DATE 01/13/2023 SHEET NO._5.__OF 6 ��lf
gai consultants
POI 4
Runoff from this drainage area leaves the project site via a level spreader as sheet flow that
ultimately conveys to an existing stormwater management pond to the southeast of the site.
Channel and Flood Protection
Runoff from this drainage area leaves the project site via a level spreader as sheet flow. Per
9VAC25-870-66, the runoff from this drainage area is not concentrated stormwater flow and
therefore channel and flood protection requirements are met. As a result, Channel and Flood
Protection criteria laid out in 9VAC25-870-66.13 and 9VAC25-870-66.C, respectively, were not
evaluated.
Erosivity
The analysis below demonstrates that the sheet flow volumes from this drainage area are non -
erosive and compliant with 9VAC25-870-66 Section D.
Level S
oreader
Level
Spreader
Storm Event
Max Flow
Rate
cfs
Level
Spreader
Length ft
Max Velocity
(ft/s)
Allowable
Velocity (ft/s)
1
2-Year
1.398
140
0.71
4.00
2
2-Year
0.508
63
0.71
4.00
STORMWATER CONVEYANCE:
Stormwater management for the Dominion Hollymeade Substation Expansion project will consist
of the construction of two (2) level spreaders and the expansion of one (1) existing storm network.
The level spreaders are proposed to be located within the southeastern side of the substation.
The level spreaders are proposed to be 133 and 126 feet long respectively and constructed as
depicted on Sheet 018. The level spreader will dissipate the sheet flow coming from the substation
to the forested and grassland areas to the southeast.
The existing storm network located on the southern side of the substation will be expanded 120
feet southwest. The storm network will convey the water from the existing substation pad and a
portion of the proposed to a drainage ditch to the south of the substation, which ultimately flows
to a pond.
Stormwater Analysis was utilized to calculate the peak flow from the drainage areas to the level
spreader and the storm sewer network. Hydraflow hydrograph Extension for Autodesk Civil 3D
2019 (Hydraflow) which utilizes the Manning Formula, was utilized to analyze the conveyances
for the 2-year 24-hour and 10-year 24-hour peak discharge. The discharges were then used to
determine whether the stormwater network could convey the proposed drainage area and
whether the velocity exiting both conveyances were acceptable given the soil type. Please see
Sheet 024 for drainage maps and calculations pertaining to the Stormwater Conveyances.
MAINTENANCE PROGRAM:
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DRAINAGE AREA CONDITIONS
The proposed project site has been split into four (4) distinct drainage areas. Drainage area 1
(POI 1) sheet flows and ultimately concentrates to an existing grass swale to the northwest of the
site. Drainage area 2 (POI 2) sheet flows mainly across the existing gravel substation pad to
where the flow is channelized into an existing storm drain system that outfalls off site to an existing
stormwater management pond to the southern portion of the site. Drainage area 3 (POI 3) sheet
flows and ultimately concentrates and conveys runoff to an existing stormwater management
pond to the southern portion of the site. Drainage area 4 (POI 4) sheet flows and ultimately
concentrates and conveys runoff to an existing stormwater management pond to the eastern
portion of the site. Drainage area maps have been included on Sheet 021 for reference.
ADJACENT AREAS
The project site is located within the 6.72 acre parcel 03200-00-00-03700. The project site is
located to the east of Worth Crossing. Due to the location selected, areas outside the property
boundary are not anticipated to be impacted by the project. BMPs, as depicted on the plans and
described herein, shall be utilized as perimeter controls for the site to prevent sediment laden
stormwater from entering downstream channels or properties.
METHODOLOGY AND SYSTEM DESCRIPTION
The Dominion Hollymeade Substation Expansion project was designed in accordance with the
Virginia Stormwater Management Act and Regulations. The Dominion Hollymeade Substation
Expansion project shall be considered a re -development project due to the work consisting of
improvements to the existing site. The limits of disturbance (2.69 acres) was selected as the water
quality limits of analysis and the Virginia Runoff Reduction Method was utilized to analyze the
pollutant load produced by the site. Water Quality Land Cover maps can be seen on Sheet 020.
WATER QUALITY:
The Dominion Hollymeade Substation Expansion project shall be considered a redevelopment as
part of the property is developed (buildings and substation equipment) with impervious cover,
manage turf and open space (existing wooded area). In accordance with 9VAC25-870-63 and
9VAC25-870-65, the required pollutant load removal requirements were calculated utilizing
Virginia Runoff Reduction Method (VRRM) and associated spreadsheets for a redevelopment.
Table 1.1 illustrates the pre -development land cover conditions while Table 1.2 illustrates the
post -redevelopment land cover conditions. Please see Sheet 020 for calculations pertaining to
water quality and drainage maps which illustrate pre and post redevelopment cover conditions.
Table 1. 1 Pre -Development Land Cover acres
A Soils
B Soils
C Soils
1 D Soils
Totals
Forest/Open Space acres
0.00
0.52
0.00
0.00
0.52
Managed Turf acres
0.00
0.75
0.00
10.00
0.75
Impervious Cover acres
0.00
1.42
0.00
1000
1.42
Total
2.69
\\gaiconsultants.imal\BUPmjlEnergy\Dominion\R220236.00 - Dominion Hollymeade Sub\Working Dots\Engineering\E&SC SWM
Narrative\E&SC - SWM Narrative 01-13-2023
SUBJECT Hollvmeade Substation Exoansion
DESIGNED BY: ELLISJR DATE 01/13/2023 PROJ. NO. R210961.01 L�
CHECKED BY: BARBESJ DATE 01/13/2023 SHEET NO._&__OF 6Nl
gaiconsultants
Upon the completion and acceptance of the construction of the Dominion Hollymeade Substation
Expansion project, long-term routine maintenance of all stormwater management facilities will be
the responsibility of the Owner. This maintenance includes inspection of all drainage facilities on
a regular basis and after each significant precipitation event. At a minimum, the drainage facilities
should be inspected twice yearly. The drainage structures will be cleaned, as necessary, to
prevent clogging and to maintain structure capacities. The grass/landscaped areas will be
checked on a regular basis and will be mowed/trimmed periodically to ensure that a good stand
of vegetation is maintained. Any area deficient in vegetation will be fertilized, reseeded and
mulched, as needed. General lawn areas will be checked on a regular basis for settled areas that
allow water to collect and stand. Any settled area will be backfilled, dressed to conform to existing
grades and reseeded. Any area deficient in positive flow will be repaired as necessary to ensure
proper drainage.
Individual maintenance programs for specific drainage structures and miscellaneous facilities are
as follows:
Level Spreader- Level Spreaders should be checked on a regular basis to make sure the lip
remains at 0% slope to ensure proper function.
Piping - Pipes should be checked on a regular basis and after significant precipitation events for
obstructions that restrict flow.
\\gaiconsultants.imal\BUPmjAEnergy\Dominion\R220236.00 - Dominion Hollymeade Sub\Working Docs\Engineering\E&SC SWM
Namfive\E&SC-SWM Narrative 01-13-2023
Forest/Open Space acres
0.00
10.00
10.00
10.00
0.00
Managed Turf acres
0.00
10.50
10.00
10.00
0.50
Impervious Cover acres
0.00
12.19
10.00
10.00
2.19
Total
2.69
As aforementioned and as illustrated in the Table 1.1 & 1.2, the soils within the property boundary
are considered Hydrologic Soil Group B. Grading and new improvements for the Dominion
Hollymeade Substation Expansion project will alter the drainage areas from pre- to post -
development and the project will result in a total impervious area of 2.19 acres.
The VRRM spreadsheet indicates the post -development total phosphorous load reduction
required for the project is 2.01 Ibs/yr. A summary of the VRRM spreadsheets has been provided
on Sheet 020. The Dominion Hollymeade Substation Expansion project will satisfy water quality
requirements by being in compliance with 9VAC25-870-69.B.2 and by purchasing offsite nutrient
credits. Nutrient credit letters of availability have been provided on Sheet 020 from the Ivy Creek
Nutrient Bank located within the Chesapeake Bay Watershed. All nutrient banks are located within
the South Fork Rivanna Basin, which is the basin the project site is located within, and all nutrient
banks have approval from VDEQ to sell nutrient credits. Upon approval of the proposed water
quality management solution selected, the Dominion Energy Virginia will purchase the nutrient
credits and the bank will retire 2.01 Ibs/yr of phosphorous credit in accordance with the Nutrient
Offset Certification regulations.
CHANNEL PROTECTION AND FLOOD PROTECTION:
Channel protection and flood protection calculations were completed for each drainage area to
ensure compliance with 9VAC25-870-66 Section B and Section C.
Poll
Runoff from this drainage area leaves the project site via sheet flow that ultimately concentrates
to an existing grass swale to the northwest of the site.
Channel and Flood Protection
9VAC25-870-66. B, Subsection 1.a requires a manmade stormwater conveyance system to
convey the post development peak flow rate from the 2-year 24-hour storm event without causing
erosion.
The allowable velocity for the grass legume mixture is 4 ff/sec. The peak discharge during the 2-
year 24-hour storm event is 0.628 CFS. The peak velocity of the water leaving POI 1 was
evaluated to be 3.8 ft/s which is non -erosive and compliant with 9VAC25-870-66.B.1.a.
Following evaluation of the 1, 2, and 10-year 24-hour storm events, GAI noted no increase in
stormwater runoff. The discharge from POI 1 has not been altered and the post -development
peak flow rate is no greater than pre -development rates. With this information, 9VAC25-870-
66.C.2.b has been satisfied.
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Narrative\E&SC - SWM Narrative 01-13-2023
3
STORM EVENT
PRE -DEVELOPMENT
POST -DEVELOPMENT
1-YEAR
0.345
0.345
2-YEAR
0.628
0.628
10-YEAR
1.625
1.625
POI 2
Runoff from this area sheet flows across a gavel pad and ultimately concentrates and conveys
runoff to an existing stormwater management system that will be extended to capture pad runoff.
The stormwater management systems will control runoff and discharge through an existing outfall
and existing conveyance channel to an existing stormwater management pond to the southern
portion of the site.
Channel and Flood Protection
9VAC25-870-66. B, Subsection 1.a requires a manmade stormwater conveyance system to
convey the post development peak flow rate from the 2-year 24-hour storm event without causing
erosion.
The allowable velocity for a rip -rap line channel is 5 f tsec. The peak discharge during the 2-year
24-hour storm event is 2.64 CFS. The peak velocity of the water leaving POI 1 was evaluated to
be 4.5 ft/s which is non -erosive and compliant with 9VAC25-870-66.B.1.a.
STORM
PRE-
PRE-
POST-
POST -
EVENT
DEVELOPMENT
DEVELOPMENT
DEVELOPMENT
DEVELOPMENT
(NO DETENTION)
(WITH
(NO DETENTION)
(WITH
DETENTION)
DETENTION
2-YEAR
5.16
4.16
5.82
2.64
10-YEAR
10.52
5.76
11.34
4.14
P01 3
Runoff from this drainage area leaves the project site via sheet flow that ultimately conveys to
an existing stormwater management pond to the south of the site.
Channel and Flood Protection
Runoff from this drainage area leaves the project site by maintaining sheet flow. Per 9VAC25-
870-66, the runoff from this drainage area is not concentrated stormwater flow and therefore
channel and flood protection requirements are met. As a result, Channel and Flood Protection
criteria laid out in 9VAC25-870-66.13 and 9VAC25-870-66.C, respectively, were not evaluated.
Following evaluation of the 1, 2, and 10-year 24-hour storm events, there is a decrease in
stormwater runoff for post -development conditions. The discharge from POI 3 has not been
altered and the post -development peak flow rate is less than pre -development rates. With this
information, 9VAC25-870-66.C.2.b has been satisfied
STORM EVENT
PRE -DEVELOPMENT
POST -DEVELOPMENT
1-YEAR
0.179
0.117
2-YEAR
0.417
0.273
10-YEAR
1.333
0.873
\\gaiconsultants.imal\BUPmjAEnergy\Dominion\R220236.00 - Dominion Hollymeade Sub\Working Docs\Engineering\E&SC SWM
Narra6ve\E&SC - SWM Narrative 01-13-2023
REVISIONS
REV DATE DESCRIPTION
ism
Dominion
PW
Energy
y
galconsultants
STORMWATER NARRATIVE
HOLLYMEADE SUBSTATION EXPANSION
ALBEMARLE COUNTY VIRGINIA
OPERATIONAL REGION B/M No. SCALE NTS
PROJECT F NAME DATE SHEET: 01
DESIGNER
PROJECT ENGINEER DRAWING:
APPROVED BY 220236-00-000-00-C-01
2 1
0
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A
8 1 7
1 \ /
\ PANIF
RCEL /D'
032✓O-01-00-01400
\ 1406DECA7URDR/VE
\ \ STEVENM MALONE
\-------_ ORLAUR/EDALE
\ — — — PR/MARYZON/NG.
\ PLANNED RESIDENTIAL
D — \ \ DEVELOPMENT
\ I
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bbARCEL /D: \ \ \\ \
32YQ O1-OQO>600 \III\ \ \\ PARCEL / : \ \ \ / / / \
-500-1
I ¢ \ \ \ \ \
I > 220EL)4 TUR DRY \ \ 03 ✓QO1-OQO 00 \�
AR/SAG'mODW/N \ \ \ \ \ \ EXISTINGASPHALT \1
14B EVL /✓E / \
I I I \ \ BR/A�'LOHNE & \ \ \ \ ( ) l / / TRAIL \
P N�✓ED RES/D r/AL \ \ I / \ \
I I \ \ I\ ✓ENN/F�RLOHN \ \ ` I ( � / / \ \
OEI�LOPMENT \I \ \ PR/MA ZON/NN� \ \ \ Is / / / N111 \ \
I \ \ \ I INNED RfS/DENT/ \ \ \ \� \ \ ` I \ AARCE'd/D' \ \ \ \ \
N/F \ \ \ DEVEL MENT \ N/F \ \ \ \ \ \� l / 032✓*02-00-))OOCO LL \ \ \ \
PARCEL /DI \ \ NNE I \ \ \ \ \ \ \ I l ESTE PARK�HASE� \ \
032✓0-01-OQO1f5001 — \PARCEL /D. \ \ \ \\ \ \ 032QOT-OlEQ1900 \ \ \ \ \ \ \ \ I �EN SP.9CE \ \ \
b 032.><0-01-00-01700 \\ \ \
14160ECATUR R/ \ — 1N40DECATURARM/ \ \ \ \ \ \ \ 1 F RESTf.9KES \ \
CASEYROS/NS'ON& \ \ 505 ATURDRIVE \ \ \ \ CHMSTOPHERN C \ \ \ \ \ OMM(YN/TY / \ \ \ \
1 \ AS OC/A /ON/A/C \ \
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PR/MARYZC G. — \ _ r fEETH /N,� ETH \ \ _ \ ��NG \ ` � \ \ \ \ \ �
PLANNED RES/D NT/,4k — \ — \ M�L \ \\ I \ \ — — ` \PR/MARYZO%vY�VG.
OEVELOPMENT ` PR/MARY2U7A�/A(O \ \ NNED RES/DEN/AL
PLANr�/CQ/S<DENT/�fL— _ \ — �\ _1FYELOp"
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Canary of .Albemarle
('onsrn alien Plan Checklist —'1'a be placed on Landscape Plans
Illandbomk• pp 111-294-111-297 for complete specifications)
I:
I I
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EXISTING RETAINING WALL
—(ed ' 6s' — \ PROPOSED RETAININGWALL \ \ \
405
hvz,
Ii
A
I. The fullowlne hems shall he shown on the olan:
b Tice. ut the saved'.
0 Limits of clearing loutside dripline of mcce to be saved):
0 Location andlype ofprorcetive fencing:
NrA❑ Gradc changes requiring tree wells or walls;
NA U Propo ed marching or tunneling beyond the limits ofclearing
1. alaf6tm°W
0 All Itecs to be saved shall be marked with print "ribbon at a hcight dearly visible to equipment operators.
0 No grading shall begin until the tree marking has been inspected and approved by a County Inspector.
1, rm-Constructlnn Canf raw.:
0 Tn•c prc.cr.;nion anJ pnnectior measures shall be reviewed with the contractor onsite.
4. Equipment Operator mod Mutant:
0 IIca%y equipment, vehicular trallic and storage ofcam ruwaim materials including and shall not be permitted within the driplines afirees
to be saved.
S. Sal F.roaIon and My, mwalce Ikavntnn Ik• lces:
0 Such dcvics5 shall not adversely affect Inc, to be saved.
6. Eim%:
0 F1res are not permitted widda 1 W fm of the dripline of mess n be saved.
7. Team Materials:
0 ],,sic malcrials shall not be stored within 100 foes ofthe dripline ofirces to be saved.
S. pmlecsive Eeechre:
0 'rma to be retained within 4t feet of a proposed building "grading activity shall be protected by fencing.
0 Fencing shall In in place and shall be inspected and approved by a County Inspector prior to grading or construction.
9. Tree Wells:
N/A U When the ground level most be missal within the dripline of a trey to be saved, a tree well shall be provided and a construction detail
submitted ma approval.
U. Tree W'alh:
WA ❑ When the ground level most be lowered within the dripline a tree to be saved, a tree wall shall be provided; and a comtruction detail
whmitted for approval.
11, Treeehim and'faenettaw:
WAU When trenching is regmted within the limits of clearing. it shall be done as far awav from the bunks of bea as possible. Tunneling
under a large uce shall be considecod an an alternative when it is anticipated that necessary uenching will datroy feeder roots.
12. Cloonan:
0 Protecsive fencing shall be the last items removed during the final cleanup.
13.
0 Damaged trees shall be treated immediately by ptunm& fertilization or other methods mcommooded bys tree specialist
NOTE: IT ISTHE DEVELOPER'S RESPONSIBILITY TO CONFER WTrH THE CONTRACTOR ON TREE CONSERVATION
REQUIREMENTS
EL — — — — — — —
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23
IIANDR15 03/0 — — — _
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CONTRACT PURCHASER SIGNATURE (DATE) 5/IM6 page 1 M I
I vv —500— / \ A / / / S7304<8E 80. 00' S73000SE 798J I I I A I
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PLANTING SCHEDULE
SPECIES
INDICATOR
MATURE
PLANT
HEIGHT
SIZE
TYPE
SPACING
QUANTITY
COMMON NAME
SCIENTIFIC NAME
STATUS
(FEET)
(FEET O.C.)
Giant Arborvitae
Thuja plicata & cvs.
GA
50
4.5' ht.
Container
15
38
Tree
Viburnum x pragense
Prague Viburnum
PV
10.0
3.0' ht.
Container
10
14
Shrub
Myrica pensylvanica
Northern Bayberry
NB
6.0
3.0' ht.
Container
15
Shrub
Shrub
8 7 I 6
EXISTING ASPHALT
TRAIL
I /
/ PARCEE 046B4-0000LO,
0
FORE,
REA PH-1 PAR C /
I I FOROSTLAKES COMMUry/TY
I / ASSOC/AT/ON
5 4
I
I\
II\
1\\
I\
l\
/
/
/
/
/
/
/
/
/
/
/
/
/
\
\
\
\
\
\
\
\
\7
/
SCA/E: 1" = 30'
30 sY 30 60
3
2
L
NOTE:
LEGEND
1
REMOVED TREELINE
EXISTING GRAVEL
PROPOSED GRAVEL
EXISTING ADJACENT PROPERTY LINE
EXISTING SITE PROPERTY LINE
EXISTING FENCE LINE
PROPOSED FENCE LINE
EDGE OF EXISTING GRAVEL
TREELINE
LIMIT OF DISTURBANCE
EXISTING INLET
EXISTING CULVERT
PROPOSED STORM SEWER
PROPOSED INLET
EXISTING VEGETATION
PROPOSED GIANT ARBORVITAE
PROPOSED PRAGUE VIBURNUM
PROPOSED NORTHERN BAYBERRY
1. ALL TREES TO REMAIN SHALL BE PROTECTED.
CONTRACTOR SHALL INSTALL PROTECTIVE
FENCING ALONG LIMITS OF DISTURBANCE TO
PROTECT TREES.
REVISIONS
REV DATE DESCRIPTION
ism
Dominion
PO
Energy
LANDSCAPE PLAN
galcolnsultants
HOLLYMEADE SUBSTATION EXPANSION
ALBEMARLE COUNTY VIRGINIA
OPERATIONAL REGION
B/M No.
SCALE
1 1"=20'
PROJECT
NAME
DATE
SHEET: OZO
DESIGNER
PROJECT ENGINEER
DRAWING:
220236-00-000-00-C-02(
APPROVED BY
2
1
0
A
0
C
7
A
8 1 7
LANDSCAPE PLANTING FOR TREES, SH
MATERIALS
PLANT MATERIALS
0
RUBS AND GROUNDCOVER (2018
1. PLANT LIST - A LIST OF PLANTS IS SHOWN ON THE PLANTING PLAN AND/OR THE REQUEST FOR BID.
IN THE EVENT THAT QUANTITY DISCREPANCIES OR MATERIAL OMISSIONS OCCUR ON THE PLAN FOR
THE PURCHASE ORDER REQUEST SHALL GOVERN.
2. QUALITY AND SIZE - PLANS SHALL BE WELL GROWN AND HAVE A HABIT OF GROWTH THAT IS
NORMAL FOR THE SPECIES ND SHALL BE SOUND, WELL FORMED, HEALTHY, VIGOROUS, AND FREE
FROM INSECT PESTS, PLANT DISEASES AND INJURIES. ALL PLANTS SHALL BE EQUAL TO OR EXCEED
THE MEASUREMENTS SPECIFIED IN THE PLANT LIST, WHICH ARE MINIMUM ACCEPTABLE SIZES THEY
SHALL BE MEASURED BEFORE PRUNING, WITH BRANCHES IN NORMAL POSITION. ANY NECESSARY
PRUNING SHALL BE DONE AT THE TIME OF PLANTING, REQUIREMENTS FOR THE MEASUREMENTS,
BRANCHING, GRADING, QUALITY, BALLING AND BURLAPPING OF PLANTS IN THE PLANT LIST
GENERALLY FOLLOW THE CODE OF STANDARDS CURRENTLY RECOMMENDED BY THE AMERICAN
ASSOCIATION OF NURSERYMEN, INC. IN THE AMERICAN STANDARD FOR NURSERY STOCK.
3. SUBSTITUTIONS - CONTRACTOR SHOULD BE CERTAIN HE CAN FURNISH ALL PLANTS AS REQUIRED
BEFORE HE SUBMITS A PROPOSAL, SO THERE WILL BE NO DELAY IN COMPLETING THE PROJECT.
MATERIAL FOR STAKING
1. STAKES FOR SUPPORTING TREES SHALL BE EITHER TWO TYPES: 2"X2"X6' SOUND WOOD OR
2"X2"X18" STAKE.
2. BLACK PLASTIC ADJ-A-TYE. 1" WIDE (OR SIMILAR MATERIAL OF OTHER MANUFACTURE) AND OR IF
APPROVED BY SYSTEM ARBORIST OR DESIGNEE, GALVANIZED WIRE AND HOSE.
MATERIALS FOR PLANTING
1. FERTILIZER - A SLOW RELEASE GRANULAR FERTILIZER SHOULD BE INCORPORATED INTO THE
BACKFILL SOIL TO PROVIDE NITROGEN, PHOSPHORUS, AND POTASSIUM. USE NO MORE THAN 1
POUND ACTUAL NITROGEN PER 1,000 SQ. FT. OF PLANTING HOLE SURFACE. SYSTEM ARBORIST OR
DESIGNEE MAY WAVE FERTILIZER REQUIREMENT DEPENDING ON THE SITE AND SOIL CONDITIONS.
2. MULCH - ALL PLANT MATERIAL WILL BE MULCHED WITH PINE BARK, SHREDDED HARDWOOD OR
WELL ROTTED WOOD CHIPS AS DIRECTED. A TWO TO THREE INCH LAYER OF MULCH SHALL ENTIRELY
COVER THE AREA OF THE PLANTING PIT, BED OR SAUCER AROUND EACH PLANT. CARE SHOULD BE
TAKEN TO PREVENT MULCH RIGHT AT THE TRUNK OF THE TREE.
PREPARATION
A. TIME OF PLANTING
1. EVERGREEN MATERIAL: PLANT EVERGREEN MATERIALS BETWEEN SEPTEMBER 1 AND DECEMBER 1
OR IN SPRING BEFORE NEW GROWTH BEGINS. IF SYSTEM ARBORIST OR DESIGNEE REQUIRES
PLANTING AT OTHER TIMES, PLANTS SHALL BE SPRAYED WITH ANTI -DESICCANT PRIOR TO THE
DIGGING OPERATIONS.
2. DECIDUOUS MATERIAL: PLANT DECIDUOUS MATERIALS IN A DORMANT CONDITION WHEN
POSSIBLE. IF DECIDUOUS TREES ARE PLANTED IN -LEAF, THE SHALL BE SPRAYED WITH AN
ANTI -DESICCANT PRIOR TO THE DIGGING OPERATIONS.
B. PLANTING SHALL BE PERFORMED ONLY BY EXPERIENCED WORKMEN FAMILIAR WITH PLANTING
PROCEDURES UNDER THE SUPERVISION OF A QUALIFIED SUPERVISOR.
B. LOCATE PLANTS AS INDICATED ON DRAWINGS. IF OBSTRUCTIONS ARE ENCOUNTERED THAT ARE
NOT SHOWN ON THE DRAWINGS, DO NOT PROCEED WITH PLANTING OPERATIONS UNTIL
ALTERNATE PLANT LOCATIONS HAVE BEEN SELECTED BY THE SYSTEM ARBORIST OR DESIGNEE.
C. EXCAVATE CIRCULAR PLANT PITS WITH VERTICAL SIDES, EXCEPT FOR PLANTS SPECIFICALLY
INDICATED TO BE PLANTED IN BEDS. PROVIDE SHRUB PITS AT LEAST 12" GREATER THAN THE
DIAMETER OF THE ROOT SYSTEM AND 24" GREATER FOR TREES. DEPTH OF PIT SHALL
ACCOMMODATE THE ROOT SYSTEM. LEAVE SOLID SOIL PEDESTAL IN THE BOTTOM OF THE PIT, DO
NOT DIG DEEPER THAN THE BALL DEPTH.
E. PROVIDE PRE -MIXED GROUND COVER BED PLANTING MIXTURE FOR USE AROUND THE BALLS AND
ROOTS OF THE PLANTS CONSISTING OF FIVE (5) PARTS EXISTING SOIL TO ONE (1) PART DEHYDRATED
COW MANURE.
F. PROVIDE PRE -MIXED GROUND COVER BED PLANTING MIXTURE CONSISTING OF THREE (3) PARTS
EXISTING SOIL TO ONE (1) PART DEHYDRATED COW MANURE. INCORPORATE THE MIX WELL BY
TILLING OR HAND WORK.
5
SHRUB PLANTING DETAIL
3" Mulch
' Soil Well
Soil Pedestal
-Irl _ dl - `"L - do
Remove container and cut circling;A�-r1z,..T, � 1 U
�- r_ et=l hl_ rh
roots if container -grown, or as
-
much burlap as possible if field —
grown
BALLED & BURLAPPED/CONTAINER PLANTS
EVERGREEN TREE PLANTING DETAIL -STAKING
TREE GUY SYSTEM
-
All posts shall be
;.
,.,•,
2"s2"hardvtvxxlequal
length and sel pttunb at die
,ame height alwcc grade.
Install (2) stakes per
•.'.' }
;, .•{�':'•
trotddireclh opposite
Ilse I Inch Adi-A-T,,e guy
tleiOht
`�': •;•��' :••f:�;�ti•�''•:•:•
;•v,_,
to secure the tree
ul'l'roe
...':
�4�ef D f�'{r,•rr,, � , ,;'rr,'I
oT�l Y"00.
Cut a„a, all ballot@ rolxs '! ��3��
I ,
I
Renuna1„
to I ne txi. ket )jijj
Widau :tnd score hole %call -- �—
Rance container and cut
circluig roots if container -groan,
or as much burlap as possible if
field -gro%m
�j 2' 3' Mulch kLpI aN\aa from tnuik I
- I I Soil ,wll to
Backlill soil
Lace solid soil pedestal -do not
dig deeper than Fall depth
SPECIMEN TREE PLANTING DETAIL
o _7
Cut a%%av all balling
Remove top of %\ire
Widen and score hole %tall-:�-"
Remove container and cut
circling roots if container-
grovm, or as much burlap as
possible if field-gro%\Ti
2'--3" Mulch kept at\ai Irom trunk
Soil welt to contain %cater
r.: •" Backfill soil
Lease solid soil pedestal -do not dig
deeper than ball
4 1 2
I NSTALLATI O N
A. SET PLANT MATERIAL IN THE PLANTING PIT TO PROPER GRADE AND ALIGNMENT. IF FABRIC
IN -GROUND CONTAINER MATERIAL IS USED, REMOVE THE FABRIC BAG FIRST. SET PLANTS UPRIGHT,
PLUMB AND FACED TO GIVE THE BEST APPEARANCE OR RELATIONSHIPS TO EACH OTHER OR
ADJACENT STRUCTURE. SET PLANT MATERIAL NOW LOWER THAN THE FINISH GRADE OR 2-3"
ABOVE FINISHING GRADE. NO FILLING WILL B PERMITTED AROUND TRUNKS OR STEMS. BACKFILL
THE PIT WITH PLANTING MIXTURE. DO NOT USE FROZEN MIXTURES FOR BACKFILLING. FORM A
RING OF SOIL AROUND THE EDGE OF EACH PLANTING PIT TO RETAIN WATER.
B. AFTER PLANTS ARE SET, MUDDLE PLANTING SOIL MIXTURE AROUND BASES OF BALLS AND FILL ALL
VOIDS.
1. REMOVE ALL BURLAP, ROPES AND WIRES FROM THE TOP 1/3 OF ROOT BALL.
C. SPACE GROUND COVER PLANTS IN ACCORDANCE WITH INDICATED DIMENSIONS.
D. MULCHING
1. MULCH TREE AND SHRUB PLANTING PITS AND SHRUB BEDS WITH REQUIRED MULCING MATERIAL
2-3" DEEP IMMEDIATELY AFTER PLANTING. AFTER WATERING, RAKE MULCH TO PROVIDE A
UNIFORM FINISHED SURFACE.
2. MULCH GROUND COVER BEDS WITH MULCH 2" DEEP BEFORE PLANTING.
E. STAKING AND GUYING
STAKE TREES ONLY IF ONE OR MORE OF THE FOLLOWING CONDITIONS ARE PRESENT:
LARGE CROWNS, SLOPED AREAS, WINDY AREAS OR TREE SPECIES REQUIRES INITIAL SUPPORT. IN
THE EVENT THAT QUESTIONS ARISE CONCERNING THE ABOVE, THE SYSTEM ARBORIST OR DESIGNEE
WILL MAKE THE FINAL DETERMINATION.
1. STAKING/GUYING
A. STAKE/GUY ALL REQUIRED TREES IMMEDIATELY AFTER PLANTING OR WITHIN 48 HOURS.
B. STAKING DETAILS ARE SHOWN ON ATTACHMENT A.
F. PRUNING
1. UNLESS OTHERWISE DIRECTED, PRUNING WILL BE RESTRICTED TO REMOVING BROKEN, DAMAGED
AND ASYMMETRICAL GROWTH OF NEW WOOD.
2. UNLESS OTHERWISE DIRECTED, PRUNE EVERGREENS ONLY TO REMOVE BROKEN OR DAMAGED
BRANCHES.
G. EXISTING PLANT RELOCATION
1. TRANSPLANT TREES AND SHRUBS DESIGNATED FOR RELOCATION TO LOCATION SHOWN ON THE
DRAWINGS. PRUNE DIG BALL AND BURLAP MOVE AND PLANT IN ACCORDANCE WITH SPECIFIED
TREE PLANTING REQUIREMENTS.
2. PRUNE DIG, BALL AND BURLAP, AND MOVE DESIGNATED TREES FOR RELOCATION TO THE
DESIGNATED PLANT STORAGE AREA FOR HEELING -IN OF MATERIAL UNTIL FINAL PLANTING AREAS
ARE PREPARED, IF REQUIRED.
A. MAINTAIN PLANTS IN STORAGE AREAS BY BRACING PLANTS IN VERTICAL POSITION AND SETTING
BALLS IN AN ENCLOSED BERM OF TOPSOIL OR BARK. WATER AS REQUIRED TO MAINTAIN
ADEQUATE ROOT MOISTURE.
B. RE -BURLAP PLANT BALLS IF REQUIRED BEFORE FINAL TRANSPLANTING OPERATIONS.
C. MOVE TO FINAL LOCATIONS SHOWN ON THE DRAWINGS AND PLANT IN ACCORDANCE WITH
SPECIFIED TREE PLANTING REQUIREMENTS.
3. TRANSPLANTS ARE NOT UNDER WARRANTY.
MAINTENANCE
A. MAINTENANCE OF INSTALLED AND ACCEPTED PLANTINGS WILL BE PERFORMED BY THE OWNER.
B. CONTRACTOR'S MAINTENANCE SHALL INCLUDE PRUNING, CULTIVATING, WEEDING, WATERING
AND APPLICATION OF APPROPRIATE INSECTICIDES AND FUNGICIDES NECESSARY TO MAINTAIN
PLANTS FREE OF INSECTS AND DISEASE UNTIL ACCEPTANCE.
1. RE -SET SETTLED PLANTS TO PROPER GRADE AND POSITION. RESTORE PLANTING SAUCER AND
ADJACENT MATERIAL AND REMOVE DEAD MATERIAL.
2. TIGHTEN AND REPAIR GUY WIRES AND STAKES AS REQUIRED.
3. CORRECT DEFECTIVE WORK AS SOON AS POSSIBLE AFTER DEFICIENCIES BECOME APPARENT AND
WEATHER AND SEASON PERMIT.
4. WATER TREES, PLANTS AND GROUND COVER BEDS.
CLEANING
A. PERFORM CLEANING DURING INSTALLATION AND UPON COMPLETION OF THE WORK. REMOVE
FROM SITE ALL EXCESS MATERIALS, SOIL, DEBRIS, AND EQUIPMENT. REPAIR DAMAGE RESULTING
FROM PLANTING OPERATIONS.
2 1 1
ACCEPTANCE
A. PLANTED AREAS WILL BE INSPECTED AT COMPLETION OF INSTALLATION AND ACCEPTED SUBJECT
TO COMPLIANCE WITH SPECIFIED MATERIAL AND INSTALLATION REQUIREMENTS.
B. INSPECTION TO DETERMINE ACCEPTANCE OF PLANTED AREAS WILL BE MADE BY THE OWNER'S
REPRESENTATIVE, UPON CONTRACTOR'S REQUEST. PROVIDE NOTIFICATION BEFORE REQUESTED
INSPECTION DATE.
1. PLANTED AREAS WILL BE ACCEPTED PROVIDED ALL REQUIREMENTS HAVE BEEN MET AND
PLANT MATERIALS ARE ALIVE AND IN A HEALTHY, VIGOROUS CONDITION.
C. SECTIONS OF THE WORK MAY BE ACCEPTED WHEN COMPLETE UPON AGREEMENT OF THE OWNER'S
REPRESENTATIVE AND THE CONTRACTOR.
D. UPON ACCEPTANCE, THE OWNER WILL ASSUME PLANT MAINTENANCE.
WARRANTY
A. WARRANT PLANT MATERIAL TO REMAIN ALIVE AND BE IN HEALTHY, VIGOROUS CONDITION FOR A
PERIOD OF ONE (1) YEAR AFTER COMPLETION, PROVIDED PLANTS ARE GIVEN PROPER CARE DURING
THIS PERIOD.
1. INSPECTION OF PLANTS WILL BE MADE BYTHE SYSTEM ARBORIST OR DOMINION ENERGY
DESIGNEE AT COMPLETION OF PLANTING.
B. REPLACE ONCE, IN ACCORDANCE WITH THE DRAWINGS AND SPECIFICATIONS, ALL PLANTS THAT
ARE DEAD OR, AS DETERMINED BY THE SYSTEM ARBORIST OR DESIGNEE INSPECTION, ARE IN A
SEVERELY UNHEALTHY CONDITION. REPLACEMENTS TO BE INSTALLED AT NEXT BEST PLANTING
SEASON.
C. WARRANTY SHALL NT INCLUDE DAMAGE OR LOSS OF TREES, PLANTS OR GROUND COVERS CAUSED
BY FIRES, FLOODS, DROUGHT, FREEZING RAINS, LIGHTNING STORMS, OR WIND OVER 75 MILES PER
HOUR, WINTER KILL CAUSED BY EXTREME COLD AND SEVERE WINTER CONDITIONS NOT TYPICAL OF
PLANTING AREAS: ACTS OF VANDALISM OR NEGLIGENCE ON THE PART OF THE OWNER. ANY
REPLACEMENT ATTRIBUTED TO THIS MUST BE IN ADDITION TO THE CONTRACT AMOUNT.
D. REMOVE AND IMMEDIATELY REPLACE ALL PLANTS AS DETERMINED BY THE SYSTEM ARBORIST OR
DESIGNEE, TO BE UNSATISFACTORY DURING THE INITIAL PLANTING INSTALLATION.
PROJECT CONDITIONS
A. WORK NOTIFICATION: NOTIFY SYSTEM ARBORIST OR DESIGNEE AT LEAST FIVE (5) DAYS PRIOR TO
INSTALLATION OF PLANT MATERIAL.
B. PROTECT EXISTING UTILITIES, PAVING AND OTHER FACILITIES FROM DAMAGE CAUSED BY
LANDSCAPING OPERATIONS. CALL MISS UTILITYTO MARK UNDERGROUND UTILITIES MINIMUM
OF 48 HOURS BEFORE DIGGING.
SAFETY
UNDERSCORING OUR COMMITMENT TO SAFETY DOMINION ENERGY CORPORATE SAFETY ADVOCATES
COMPANY AND CONTRACTOR SAFETY AS ONGOING INITIATIVES. ALL LANDSCAPE VENDORS WILL ADHERE
TO THE APPLICABLE SECTIONS OF THE DOMINION ENERGY ELECTRIC TRANSMISSION CONTRACTOR SAFETY
PROGRAM FOR THEIR ANTICIPATED WORK.
(A) DOMINION EXPECTS SITE SAFETY REVIEW WITH CONTRACTOR PRIOR TO THE COMMENCEMENT OF
WORK. THIS REVIEW WILL INCLUDE SITE WORK OR WORK RELATED HAZARDS AND MISS UTILITY
MARKINGS IDENTIFIED AND DISCUSSED. NEW PERSONNEL TO THE SITE WILL BE UPDATED
ACCORDINGLY.
(B) ALL SAFETY RELATED ISSUES MUST BE REPORTED TO THE DOMINION CONTACT WORKING THE
PROJECT IMMEDIATELY.
(C) ALL PERSONAL PROTECTIVE EQUIPMENT ASSOCIATED WITH THE SAFE PERFORMANCE OF WORK
SHALL BE ADHERED TO BYTHE CONTRACTOR WHILE WORKING FOR DOMINION. THIS SHALL
INCLUDE BUT NOT BE LIMITED TO HARD HATS (WHEN MEN OR EQUIPMENTARE WORKING ALOFT),
SAFETY GLASSES (AS NECESSARY), WORK GLOVES, AND REFLECTIVE VESTS.
REVISIONS y
gaiconsultants
REV I DATE I DESCRIPTION
.00 Dominion
Energy
LANDSCAPE SPECIFICATIONS
HOLLYMEADE SUBSTATION EXPANSION
ALBEMARLE COUNTY VIRGINIA
OPERATIONAL REGION B/M No. SCALE NTS
PROJECT NAME DATE SHEET: 021
DESIGNER
PROJECT ENGINEER DRAWING:
APPROVED BY R220236-00-000-00-C-02
IN
C
3
Id
8 1 7
3
5
IB
3
2
1
8 7 6
/ , I I `` /' � III III ` 1, \ \ \ \\' �- //'%%� / I \1 ►11 � -
/ 1 1 1 1 \ v / � I I I I I I I \ \ \ \ \ \ // ,///• '/ � \ � l �) /ill I \I
\\
II
\\ III f
\\� I 1,�
it
\\ ; 1
r
I \ \ �►/ll �l I l r I �/ / I ��lli ( \I \\\ I
► , I, , I � \ _ IIII \��1
PROJECT NO. PRE -DEVELOPED WATER QUALITY LAND COVER MAP
DRAWN BY: ELLISJR HOLLYMEADE SUBSTATION
DATE: 08/22/22 PROJECT NO.
SCALE: 1a=80' ALBEMARLE COUNTY, VIRGINA
j 1 111 11 \`�/� ) I jI1I�11� \ ,I\ \ \\\/ /%-�'�\\ ,/''���/ ► 1\\I ►%I r 1
�I
/// ram\ \\ /I /- .l I ► % /
/<\AN / //lIl►I //// l�l ►
V
\,!� II
\\1 / / lie \\\\� IIII ►1,�
\mac_\-
/_7
0
IL, it
I I I► r/ I I\�\\
V l
ir
t\\
1 \
11 I I II II \
_ ����II►j1 li(L: ////
/ ir/
/
I r I//// \�`�/// \%��%j//�i.• " s
A
V
/ 6 //o'
ELLISJR PROJECT NO. POST -DEVELOPED WATER QUALITY LAND COVER MAP
DRAWN BY:
DATE: 08/26/22 PROJECT NO. HOLLYMEADE SUBSTATION
scALE: In=80' ALBEMARLE COUNTY, VIRGINA
8 7 1 6
5
LEGEND
HSG B; IMPERVIOUS (1.42 AC)
HSG B; MANAGED TURF (0.75 AC)
HSG B; FOREST/OPEN SPACE (0.52 AC)
SCALE: 1" = 80'
80 0 80 160
FIGURE NO.
Dominion
Energy
LEGEND
HSG B; IMPERVIOUS (2.19 AC)
HSG B; MANAGED TURF (0.50 AC)
SCALE: 1" = 80'
80 0 80 160
FIGURE NO.
Dominion
Energy
5
0
2 2
Legend «
Project -Location *`� �� •li
ECOSYSTEM SERVICES, LLC wE4T
IF GI NIA
1739 Allied Street, Suite A
Charlottesville, VA 22903 LynnhavenHUC n' /
540.578.4296 f
www.ecosystemservices.us
ion(riecosystemservices.us d� `
Primary_HUCs
May 26, 2022 /
is-� rJames
Secondary HUCs
Kirsten M. Lipsky, EIT
GAI Consultants
385 E. Waterfront Drive
Homestead, PA 15120-5005
RE: Nutrient Offset Credit - Cost Quote
Project: Hollymeade Substation Expansion Project
Project Address: 2428 Decatur Drive, Charlottesville, VA 22911
Project HUC: 02080204
Bank Hi 02090204
+Ili Bank Address:1705 Lambs Road, Charlottesville, VA 22901
Il i
Dear Ms. Lipsky,
S
We appreciate the opportunity to provide a cost quote for 222 pounds of phosphorus for the above �jQ)II
referenced project. This letter is to certify that as of today, May 26, 2022, Ivy Creek Nutrient Bank has
171.08 pounds of phosphorus (TP), 263.26 pounds of nitrogen (TN), and 53,946.89pounds of TSS available
r for transfer to those entities requiring offsets in accordance with the Chesapeake Bay Watershed Nutrient
Credit Exchange Program (VA Code § 62.1-J4.19:14 et seq.). Those offsets are also transferable in
accordance with the Virginia stormwater offset program (VA Code § 62.1-44.15:35) and the Virginia Soil
9 and Water Conservation Board's Guidance Document on Stormwater Nonpoint Nutrient Offsets approved
on July 23, 2009, to those regulated entities q lifying for nutrient credits.
We can certainly accommodate your need � and could offer to fulfil the order of 2.22 pounds of
phosphorus for $44,400.00 ($20,000/pound)'a The Bank Sponsor will guarantee this price for the above
referenced pounds for thirty (30) days from ti�ie date of this letter. The Bank Sponsor reserves the right to
requote the price if the nutrient credits requested changes.
Please feel free to contact us with any questions. I hope we have the opportunity to work together on this
project.
9' zf ii uii d a Ir,. y ( �Ji Ali Id
Sincerely; ` SI m7 Ji Ij f+ rl
i J ) I'�u1�1 �' ,�• ° � �J�/4 �i /) A
Ecosystem Services, LLC
v-
B �(r
5�"e�� �I rr � Ih �:i ��r I �, �� • � � f � � I i g 'li �
bL ` I{ ,i ��m ,r !if �l �%°. ll�ry1,
11
Jonathan R. Roller, AOSE PSS CNMP
I8 N
Manager - Authorized Representatmi'1� �I II �j rill �ll� �(�,^
I : PPP . � i g d
DEQ Virginia Runoff Reduction Method Re -Development Compliance Spreadsheet -version 3.0
BMP Design Specifications List. 2013 Dreg Stds & Specs
Site Summary
Project Title: Hollymeade Substation Expansion Project
Date: 44799 Total Rainfall (in), 43
Total Disturbed Acreage: 2.69
Site Land Cover Summary
Pre-ReDevelopment Land Cover (acres)
Asolls
BSolls
CSolls
DSoils
Totals
%of Total
Forest/Open(a<res)
1 0.00
0.52
0.00
0.00
0.52
19
Managed Turf (acres)
0.00
0.75
0.00
0.00
0.75
28
Impervious Cover(acres)
0.00
1.42
NEC
0.00
1.42
53
2.69
00
Post-ReDevelopment Land Cover (acres)
Asoils
esoils
CSoils
DSolls
Totals
%of Total
Forest/Open (acres)
0.00
0.00
0.00
0.00
0.00
0
Managed Turf (acres)
0.00
0.50
0.00
0.00
0.50
19
Impervious Cover (acres)
0.00
2.19
0.00
0.00
2.19
1 81
2.69
1 100
Site Tv and Land Cover Nutrient Loads
Final Post -Development
Port-
Post-
Adjusted Pre-
(Post-ReDevelopment
ReDevelopment
Development
ReDevelopment
&New Impervious)
p
(New Impervious)
Site Rv
0.81
0.75
0.95
0.75
TreatmentVolume (1
7,915
5,260
2,655
5,260
TP Load (Ib/yr)
4,97
3.30
1.67
3.30
Total TP Load Reduction Required (Ib/yr) 2.01 0.66 1.35
Final Post -Development Load
(Post-ReDevelopment & New Impervious)
Fir e-
ReDevelopment
TN Load (lb/yr)
35.58
24.71
Site Compliance Summary
Maximum% Reduction Required Below 20%
Pre-ReDevelopment Load
Total Runoff Volume Reduction (1
0
Total TP Load Reduction Achieved (lb/yr)
0.00
Total TN Load Reduction Achieved (lb/yr)
0.00
Remaining Post Development TP Load
497
(lb/yr)
Remaining TP Load Reduction (Ib/yr)
Required
2.01
i
3
1
��' �1Nashington
i
,. Ki
D.] Cdy
sbNM:
MarrroMurg Pew
H u
Fredericksblrgi
California
A- Fnd A.P
/ Rivanna,il trevae to+c Hil
- 1 CnesapeaFe 8ai
Middle James -Buffalo
An,,
a61 n
James -Willis
a.
Appomattox
FI,F.I nxl F��.imaa 1
le^
bar"111, - - - -,o0 n H Ke
DRAWN BY: ELLISJR
CHECKED BY: KUZMKWM
pre
ReDevelopment
Final Post -Development
Post-ReDevelopment TP
TP Load per acre
Tp Load per acre
Load per acre
(Ib/acre/yr)
(lb/acre/yr)
(lb/acre/yr)
1.72
2.85
2.72
REVISIONS
DATE I DESCRIPTION
P ism
.00 Dominion
RWO Energy
Loweriames
Lynnhaven-Poquoson
/Hampton
Norfolk
1
`V ugi rim
Beach
WATER QUALITY
gaico�ltants
HOLLYMEADE SUBSTATION EXPANSION
ALBEMARLE COUNTY VIRGINIA
OPERATIONAL REGION B/M No. SCALE 1" = 200'
PROJECT F NAME DATE SHEET: 022
DESIGNER
PROJECT ENGINEER DRAWING:
APPROVED BY 220236-00-000-00-C-02'e
2 1
0
M
no
A
r:?
7
5
4 I 2
2
1
L
A
�RCEL Al ' I yD \ PAR �' \ /��\ / /i �/ ► )11 /I 1
1 1 1 1 1 \ \ 032"st601400/ 0' \ '
1 \ `r40QBECAruRDR/ hqr D 434 z
cA e/ / rI ! l I
EL �•/�// // t I
1 1 iy c o iAN YD \ / _ �// J1III 1/ 11 //l
\\-\SOTEl7ENR1E 117 Y L o / ��S/ U�i/�/ III I/1� �ll lrr-%
G I
.p(RY M NTY
/NARY //�i G.\ \ R
ti PLA NEDREN \\ /• i� \ i / / /
-- \\ _�_- \ _ _•,__ -y1 �\ � a �•�r�����_=
-v\ \ \\\\ i-r''I F - _ r _ Jj \\ \\ \ IIII
1 \I\
\ fz
\ I ►1'l 1 I I I o _ �\�� �/ 111<
h \\ \ � \ \\�--- l / � \\ - U � / �I I 1► I I III III IIII � . \ \
o I v I I I I IIII I
\\_
PA
oe p PO 174
J/ P01 2 / I FORESAS /01W rY
/ l I PR/MA/1rYZONING.•R4 /
l I /S/DEN�JAL [POI3
rxe��n.
DRAINAGE AREA
TIME OF CONCENTRATION PATH
(SHEET FLOW)
TIME OF CONCENTRATION PATH
(SHALLOW CONCENTRATED FLOW)
TIME OF CONCENTRATION PATH
(CHANNEL FLOW)
TIME OF CONCENTRATION PATH
(PIPE FLOW)
PRE -DEVELOPED DRAINAGE AREA 1
(0.51 AC)
CN=64
TIME OF CONCENTRATION: 6 MIN
PRE -DEVELOPED DRAINAGE AREA 2
(2.36 AC)
CN=75
TIME OF CONCENTRATION: 8 MIN
PRE -DEVELOPED DRAINAGE AREA 3
(0.55 AC)
CN=60
TIME OF CONCENTRATION: 7 MIN
PRE -DEVELOPED DRAINAGE AREA 4
(1.44 AC)
CN=60
TIME OF CONCENTRATION: 6 MIN
SCALE: 1" = 80'
PROJECT NO. FIGURE NO.
PRE -DEVELOPED DRAINAGE AREA MAP 00 Dominion Ener
DRAWN BY: ELLISJR HOLLYMEADE SUBSTATION /
DATE: 09/06/22 PROJECT NO. 9Y 2
SCALE: is=80' ALBEMARLE COUNTY, VIRGINA
Check ■ Present
❑ Under Development ❑ Developed
Sheet Flaw
Segment ID
AB
Surface Description ..........................................
P
Meadow
Manni 's Roughness Coefficient n..............
0.15
TR Table 1 b5 3
Flow Length. L................................................
100
ft
Two-year 24hour Rainfall, P2.............................
3.61
In
Land Slope. s.................................................
0,147
ft/ft
Travel Time, Tt=(0.007'(n•L)08)/(Pz 4•s°'1)........
0.0692
has
Shallow Concentrated Flow
Segment ID
SC
Surface Description (Paved / Unpaved) ................
Paved
20.33
Surface Description Coefficient, C.......................
(TR-55 APPENDIX F)
137
Flow Length. L................................................
ft
0.023
Watercourse Slope,a.......................................
ft/ft
AverageVelocity, - 9A
V-Ce ...........................
fusee
3.10
0.012
Travel Time, Tt = (L) /(3600•V)..........................
has
Channel Flow
NO CHANNEL FLOW
Time of Concentration
Sheet Flow T..................................................
e
0.069 2
h rs
Shallow Concentrated Flow T ...........................
t-
0.0123
hrs
Time of Concentration, T. ..................................
0.0815
hrs
5
mins
Project:
By,:
D 1
Dominion -Noll -Hollymeade Substation
JRE
a/31/2022
Location:
Checked:
Date:
PRE P011
MWK
9/4/2022
8 I 7
Chad: as Preaebt D Under Development ❑ Davelopetl
Sheet Flow
Segment ID
3urrece Olac ipEOn........................................
Manninga Roughness Caelfiderv, n ..............
FlowLeigin. L..............................................
Two-year2 Ihaar Ralneell, P
Leekslopes................................................
Travel Time, T,=(O.00T(n•Lf )/(P�° s").......
Shallow Concermatl Flow
AB
Be
CD
Woods
Gres
Grant
0.4
0.15
0.011
22.19
30.64
47.17
3.61
3.61
3.61
0.076
0.194
0.018
CIRRI
0.0241
0.0109
nmR ,Table 31)
ft
In
ft/ft
has
Se9 meM ID
DE
EF
Surface Deem s Pavetl / Un wtl ..............
pli ( PB )
Pavad
Unpaved!
Pe
Surface Deealptlm CSMtlem, C......................
20.33
18.13
(TRSS APPENDIX F)
Flow Langbl, L..............................................
10.47
57.4998
ft
Watercourse Sk,P.. e......................................
0.029
0.06
RM
Avara9a Velocity,V=C•s66.............................
3.48
1.25
Na x
Travel T.,T,=(L)/(35ODV).........................
0.016
0.013
has
Segment lD
Diameter d MPa. do ......................................
Water&* in pipe, d....................................
meta. B......................................................
Waded Pedmstan O.SG'EO.... ........................
Hydraulic Radius, r= G.2V(1-(sin9y0k10...........
Chssl Slope, s..... ........... ......... -...............
Manningk Roughness Coeffiplem, n..................
Aveupe Velocity, V=11.49'(V3's12)/ (n)........
Volume0ic Flow Rate. cfa ...............................
FlowLengN, L.............................................
Travel Time. Tt= (L) /(3800'V)........................
Segment ID
Sacibn B., b......................................
saclbn DWM, d....................................
sactbn Side slope,. ..............................
C. Seal R. Anse, a=bd. Trf...
Waded Perimeter, P.=b. (2'drtZ. 1)°b..
Hydraulic Radiu, r= e/ q.........................
Channel Slope. s....................................
Wnning's Roughnes Coe) chin, n..........,
Average Velocity, V=(1.49•rz°416)/(n)....
.
Flow Length. L.......................................
Travel Time. T,= (L) / (3600^n.................
rme of Canostreticn
FG
GH
Id.
3
1
1.333
3
1
1.333
6.2831853
62011153
5.2831853
9.424778
3.1415927
4.18T743
0.75
0.26
0.33325
0.004
0.051
0.0612
0013
0.013
0013
S9781108
1U.224635
13.579214
42.256775
8.0304095
19.950681
Seel
15.07
18.95
0.0041
0.0004094
0.0003876
1.50 ft
0.0 ft
3
0.56 N A
Toe ft
Fla R
FN 0 ft
0.01
3.58 ft/eac
)7.81 R
Me has
Sheet Flaw T, ................................................
oesaut
h l
Shallow Comertmal Flow Ti..........................
0.0283
he
Pipe Flow Tl........................................
Metals
he
Channel Flow TL...........................................
0.01178
In
Tine of Conmandficn,T•................................
0.1349
M
8
ali s
L•�
ft
ft
ft
ft
ftIR
Msc
hre
Proect:
Y
Date:
Dominion- Hollymeade Substation Expansion
ELLISJR
9/1/2022
Cheduad:
Dale:
r?g�i cgnsplt`.antis
Location:
KUZMKMW
9/4/2022
PRE POI 1
84
Post-0evelopment
Area
Runoff
Acres
Proact:
Y
Date:
Dominion- Hollymeade Substation Expansion
ELLISJR
9/1/2022
Chedu d:
KUZMKMW
Date:
9/4/2022
Location:
PRE POI 3
Post4Development
Area
Ru
Product
■Acres
Cover Description
ON
of
D milesa
CN z Area
o%
Meadow (B)
58
0.13
8
Woods (B)
60
0.40
24
Greve) (B)
85
0.02
2
TOTALS
0.55
33
Project:
Date:
Dominion -Noll meade Substation
JRE
8/31/2022
Location:
Checked:
Date:
PRE P013
MWK
9/4/2022
Check ■ Present D Under Development O Developed
Sheet Flow
Segment ID
Surface Description ......................................
9
Mannin9 's Roughness Coefficientn ..............
Flow Length, L............................................
Two-year 24-hour Rainfall, P2.........................
LandSlope, s..............................................
Travel Time, T, _ (0.007'(n•L)°'0) / (pz .s•a0°)
Shallow Concentrated Flow
Segment ID
Surface Description (Paved / Unpaved) ...............
Surface Description Coefficient, C.......................
Flow Length, L................................................
Watercourse Slope. s.......................................
Average Velocity, V = C s ..............................
Travel Time, T, = (L) /(3600'1n..........................
Channel Flow
Time of Concentration
N
R- TaMe -1
55 3ftin
0.049 fuft
0.1074 hrs
BC
CD
DE
EF
Unpaved
Unpaved
Paved
Unpaved
16.13
16.13
20.33
16.13
100
89.73
4
8.41
0.088
0.128
0.108
0.212
4.79
5.77
6.68
7.43
0.006
0.004
0.000
0.000
Sheet Flow Tt..................................................
0.1074
Kra
Shallow Concentrated Flow Tt ............................
0.0105
hrs
Time of Concentration, T...................................
0.1180
hnc
7
mine
5
(TR-55 APPENDIX F)
ft
ft/ft
fusee
has
CN (WEIGHTED) 60
y
gai consultants
Hallymeade Substation Expansion
POI
Post -Development
Area
Runoff
Product
• Acres
Cover Description
CN
of
D mils'
CN xArea
o%
Meadow (B)
58
0.65
32
Woods (B)
60
0.37
22
Gravel(B)
85
1.44
122
TOTALS
2.36
177
ON (WEIGHTED) 75
gai consultants
Proect:
Date:
Dominion - Hollymeade Substation Expansion
ELLISJR
9/1/2022
Checked:
KUZMKMW
Date:
9/4/2022
Location:
PRE POI 4
Post -Development
Area
Runoff
• Acres
Product
Cover Description
CN
of
❑ miles,
CN x Area
❑%
Meadow(B)
58
0.85
49
Woods (B)
60
0.54
32
Gravel(B)
85
0.05
4
TOTALS
1.1
86
Project:
D :.
Dominion -Hollymeade Substation
JRE
8/3l/2022
Location:
Checked:
Date:
PRE P014
MWK
9/4/2022
Check 0 Present D Under Development O Developed
Sheet Flow
Segment ID
Surface Descriptionss
..........................................
Mannin9 's Roughness Coefficient n ..............
9
Flow Length, L................................................
Two-year 24hour Rainfall, P2.............................
Land Slope, s..................................................
Travel Time, Tt = (0.007'(n•L)°'0) / (Pz'°•s°'°)..... ....
Shallow Concentrated Flow
AS
TR-5
ft
in
ft/ft
hrs
Grew
0.15
100
3.61
0.072
0.0921
Segment ID
Surface Description (Paved / Unpaved) ...............
Surface Description Coefficient, C.......................
Flow Length, L...............................................
Watercourse Slope. s.......................................
Average Velocity. V = C•sp.°..............................
Travel Time, Tj = (L) /(3600'V)..........................
Channel Flow
Time of Concentration
Table 3-1
BC
CD
DE
EF
Unpaved
Unpaved
Paved
Unpaved
16.13
16.13
20.33
16.13
100
64.31
6.39
11.01
0.076
0.158
0.111
0.119
4.45
6.41
6.77
5.57
0.006
0.003
0.000
0.001
Sheet Flow Tt..................................................
0.0921
hrs
Shallow Concentrated Flow Tt ............................
0.0098
hrs
Time of Concentration T. ..................................
0.1019
hrs
8
mins
3
(TR-55 APPENDIX F)
ft
fvt
fusee
has
CN (WEIGHTED) 60
REVISIONS
y
gaiconsultants
REV DATE DESCRIPTION
Dominion
Energy
STORMWATER MANAGEMENT
DRAINAGE AREA MAPS & ROUTING DIAGRAMS
HOLLYMEADE SUBSTATION EXPANSION
ALBEMARLE COUNTY VIRGINIA
OPERATIONAL REGION B/M No. SCALE 1" = 200'
PROJECT NAME DATE SHEET: O23
DESIGNER
PROJECT ENGINEER DRAWING:
APPROVED BY 220236-00-000-00-C-02;
2 1
A
r:?
7
s
2
1
I\\/ �_ /1j►p r -
1 1 1 1 1 \ \ 032olt6 0>400/ j 0
`440§RECAMRDR/
1 1 ny _
111 \ \ - SDTEl7EN R/6�AL/ Yo / S U�i/ III I �/1 /rr -
/ 1 1 \ \\ Rr1 c�cB E/ \AW // IIII I/// � ///
NEDRE �Q I E \\\ I I IIC 1/ l/ / / / r I
P /a�ARrA vac.\ \ \ rr\� \\ IIII 1 \ see" see"
/ / // �/ / 1 - J �\ \ M N 1 I \\\ // / / /
\ \\\ �• - `& PLA NED RE,'/ D �• _ NE A /\ \\\ „ 1(\� \\� / / /
Poi i
/ ci �rRiC�
/\
I1TA1tN �{ i \I
\\ 0A 0-03700 J \.-� D \\\ I\'111\\\\
. Ash
jlwv
It It it
0
\ \\ � ► I l I l I � � /i '-��---e --�-�� I I )I I ri, I IIII, \I \\\�,
\ ) I ► ► I l ( I\\\ r I \ II lll�j I \ \\-
\ ► 1 11 �\�\� \\_- � �i /t l �, I I' ,1 .1. III III \ \ \
\ L\\ \ \�/
\ \\�\\ \� 1\1 /
/\\\ \ - �// ►III III
\
If
is
FOREST AREA PH-coMNun �f
POI4
J FORESTIA
AS /AT/ If
j /// j ` / // % / \\ ,�/. • • If I D.B.
PR/MA/tYZON�NG.•R4
� \ IfI /S/DEN�JAL [POI i
If
LEGEND
DRAINAGE AREA
TIME OF CONCENTRATION PATH
(SHEET FLOW)
TIME OF CONCENTRATION PATH
(SHALLOW CONCENTRATED FLOW)
TIME OF CONCENTRATION PATH
(CHANNEL FLOW)
TIME OF CONCENTRATION PATH
(PIPE FLOW)
POST -DEVELOPED DRAINAGE AREA 1
(0.51 AC)
CN = 64
TIME OF CONCENTRATION: 6 MIN
POST -DEVELOPED DRAINAGE AREA 2
(2.32 AC)
CN=78
TIME OF CONCENTRATION: 9 MIN
POST -DEVELOPED DRAINAGE AREA 3
(0.36 AC)
CN = 60
TIME OF CONCENTRATION: 9 MIN
POST -DEVELOPED DRAINAGE AREA 4
(1.67 AC)
CN = 68
TIME OF CONCENTRATION: 10 MIN
SCALE: 1" = 80'
IIII
PROJECT No. POST -DEVELOPED DRAINAGE AREA MAP FIGURE NO.
DRAWN BY: ELLISJR HOLLYMEADE SUBSTATION � Dominion
DATE: 09/01/22
PROJECT NO. / Energy® 2
SCALE: in=80' ALBEMARLE COUNTY, VIRGINA
Project:
eY
Dill
Dominion -Sinai Substation Ex nsion
JRE
8/31/2022
Location:
Checked:
Date:
POST POI
MWK
9/412022
Check: D Present D Under Development ■ Developed
Sheet Flow
Segment ID
Surface Description ..........................................
Manning's Roughness Coefficient, n ..............
Flow Length•L................................................
Two-year 24-hour Rainfall, P2.............................
Land Slope, a ..................................................
Travel Time, Tt=(0.007'(nlB)/(P2 s`s°A).........
Shallow Concentrated Flow
AS
(TR-55, Table 3-1)
It
in
Nft
him
Meadow
0.15
100
3.61
0.147
0.0692
Segment ID
BC
Surface Description (Paved /Unpaved) ................
Paved
Surface Description Coefficient, C.......................
20.33
(TR-55 APPENDIX F)
Flow Length, L................................................
137
It
Watercourse Slope, s........................................
0.023
flflt
Average Velocity, V = C'ss's ...............................
3.10
fil
Travel Time, Tt = (L) /(361 ..........................
0.012
bra
Channel Flow
NO CHANNEL FLOW
Time of Concentration
Sheet Flow T...................................................
Shallow Concentrated Flow Tt ............................
Time of Concentration, Ta..................................
0.0692
his
hrs
him
mine
0.0123
0.0815
5
7
PrateG
ar
Odx
Dpninion -Sinai Substation Expansion
IRE
a31TN22
Lacetipn:
00adea9:
QOb:
POST P012
Matrix
9M2W2
chak: DPment OthWer Doak~ al Obligation
Shell Flew
Sagna m
Surfers Dawlptlon
Manning'% Roughness Daellklent, n ..............
Flow LengO,. L..
Teoyear2M0
ur RelMell, P.............................
LandSbpa.e.................................................
Trees nine, 1:= Ia.O (n•Lf') I(P,2e ll y.........
Shallow Coi,crmded Flax
AB
BC
m
Wood.
Great
Gravel
OA
0.15
0.011
M.19
ages
3.01
3.61
3.81
0.078
0.10
0.010
0.0586
0.0241
0.0109
71155, Table 3-1)
0
In
rim
hr.
SanxMID
of
Sudae DesMption 014: unpaved) .................
Paved
Sudece DeeaipOa CaM6cia4 C ........................
20.33
(rR55 APPENDM F)
Flow Length.L.................................................
276.747
0
Walercaars,swe.a........................................
0.025
Ml0
AvereWVNo.itY.V=Chos................................
3.21
Nee.
Treatnme,>;=0-)I(3110 l...........................
a.gu
hr.
Pipe Flay
Segment ID
Diameter of Pps. d0..........................................
Wdesdapm In pipe.0.......................................
mom. Wetletl PorimMe.ingrsex,ll.............................................
0.5'1'0 ................................
Hydreulk Raal r= o.2T(1Hs1n0yhdD...............
(preval Stec. 9..............................................
Manning's Pa hnw Co Mdwt, n.....................
Average velocity, V x (IA8 iWir112) I (n)....... .....
Volumetric Flax Ram. cfe...................................
Flow Length. L., ....
Travel Time, n=(L)1(3407l...........................
EF
FG
OH
HI
IJ
N.
2
2
2
3
1
LK13
2
2
2
3
1
1.=
628918531
6.28316531
6.28318631
8283185307
62831853
6.20185
(28318531
UM18531
6.20318531
9.424777881
3.141M7
4.107743
0.5
0.5
0.6
0.75
0.25
0.33325
0.0025
0.0025
0.0025
9.001
0.0511
0.0812
0.013
0.013
0.013
0.013
0.013
0.013
3.80182878
3.601828)B
3.60182678
5.978110774
10.23M54
13.5mll
11.315sM
11.3154M
11.315l
42.256775
8.008UN
legal
1VA
Us
37.89
35.17
15.09
18.95
0.0096939
0.00405456
0.00292213
0.0p1634203
O.000W98
O.00a180
Channel Flax
SegmatlD
Section Base, b...........................
Section Ratan, d..............................................
Section Sitle Sbpa, a ........................................
Cross Bauman RonA e a= ed a edi.............
Waetl Pedmde.,0.=6e(2tlP(zi'ii............
Hydraulic RaeluS.r=a/0..................................
Channel Sbpe, a ..............................................
Manning: Raehna.. C.epn'ml n.....................
Average VNo.6Y.V=(1 A9'F%An/(n)...............
Flow Length. L.................................................
Traval Time, T,=L)I(xoM...........................
Tyne of Concentre0m
0
6
ah
fl
6
Mt
Naec
0
has
JK
1.60
0.25
3
0.56
3.0
0.1818
am
0.114
3.58
91.61
j s.sms
shad FlaaT,
Bill Cptxenbded Flax It .............................
Pipe Flow It ..........................................
Overva Flow R..............................................
Tmeof Concentrefil...................................
0.0935
has
las
his
his
M,
miro
0a239
0.019B
0a07B
&IM1
B
Proact:
BY
Date:
Dominion- Hollymeade Substation Expansion
ELLISJR
9/1/2022
Checked:
KUZMKMW
Data:
9/4/2022
Location:
POST POI 1
Post -Development
Area
Runalf
■Acres
Product
Cover Description
Chl
of
❑ miles'
CN x Area
❑%
Meadow (B)
58
0.30
17
Wootls (B)
60
0.11
7
Gravel (B)
85
0.10
9
TOTALS
0.51
33
CN (WEIGHTED) 69
Pri
Date:
Dominion - Hollymeade Substation Expansion
ELLISJR
9/1/2022
Checked:
KUZMKMW
Data:
9/4/2022
Location:
POST POI 3
Post -Development
Area
Runaff
■Acres
Product
Cover Description
Chl
[3 miles'
miles'
CN x Area
❑%
Meadow (B)
58
0.14
8
Woods (B)
60
0.21
13
Gravel (B)
85
0.01
1
TOTALS
0.36
22
Project:
Dy
D
Dominion - Sinai Substation Ex anion
JRE
8/3V2022
Location:
Checked:
Data.
POST POI
MWK
9/4/2022
Check 13 Present D Under Development ■ Devebpetl
Sheet Flow
Segment ID
Surface Description ..........................................
Manning's Roughness Coefficient n ..............
Flow Length. L................................................
Two-year 24-hour Rainfall, P2............................
LandSlope, s.................................................
Travel Time, Tt = (0.007e(neL)s's) / (P2 aeS9A)__......
Shallow Concentrated Flow
Segment ID
Surface Description (Paved / Unpaved) ................
Surface Description Coefficient, C.......................
Flow Length. L................................................
Watecouree Slope. s.......................................
Average Velocity. V = CeseG ...............................
Travel Time, Tt = (L) /(38g0'1/)..........................
AS
BC
CD
Meadow
Woods
Meadow
0.15
0.4
0.15
28.72
82.87
9
3.61
3.61
3.61
0.195
0.116
0.316
0.0228
0.1151
0.0074
(TR-55, Table 3-1)
It
In
fl/fl
him
(TRb5 APPENDIX F)
It
Wit
fl/sec
hire
Channel Flow
NO CHANNEL FLOW
Time of Concentration
DE
EF
Paved
Unpaved
20.33
16.13
4.01
6.41
0.813
0.273
18.33
8.43
0.000
0.000
Sheet Flow Tk..................................................
Shallow Concentrated Flow Tt............................
Time of Concentration, T...................................
0.1453
him
hrs
him
mine
0.0003
0.1456
9
5
CN (WEIGHTED) BO
raa'Itant.
Hollymeade Substation Expansion
P012
Cover Description
(B)
Hollymeade Substation Expansion
POI
Post -Development
Area
Runoff
Product
• Acres
Chl
o
❑ miles'
CN xArea
o%
58
0.40
23
60
0,23
14
85
1.69
144
TOTALS
2.32
181
CN (WEIGHTED) 78
Post -Development
Area
Runoffof
Product
■ Apes
Cover Description
Chl
D miles'
Chl x Area
D%
Meadow (B)
58
0.76
44
Woods (B)
60
0.34
20
Gravel (B)
85
0.67
48
TOTALS
1.67
113
Pill
py
Dam:
Dominion- Sinai Substation Expansion
JRE
&3112022
LocaOon:
Checked:
Date:
POSTPOI4
MWK
9I4/20 22
Chac
0 Present
0 Under Development
• Developed
Sheet Flay
......Sg
Surfem Description ............
Menninb RouBhimas CoelAden...6nM
..D
.....
Flow Length. L................................................
Tani 2A4tour Reintal, P2............................
LandSlope. s................................................
Travel Time, T, = (0.007'(n'L)os) / (P2ad'seA)........
Shallow Concentrated! Flow
Segment ID
Surface DpCIiDGOn (Pia ed / Unpaved) ................
Surface Description Coefficient, C.......................
Flow Length. L................................................
Wamr-n gaSIOps.s.......................................
Average Velocity. V=C'sos ...............................
Travel Time, T, = (L) /(3600^0..........................
AB
EF
FG
GH
HI
Uad
Gravel
Meow
Woods
Meadow
Gravel
Meadow
0.011
0.16
0.4
0.15
0.011
0.15
100
15.14
67.14
1 2.59
1 6.39
11.01
3.61
3.61
3.61
3.61
1 3.61
3.61
0.02E
0.100
0.145
1 0282
0.111
0.108
0.ata
o.01Te
0.11Da
g.og29
0,0011
0.0135
(TR55 APPENDIX F)
ft
Ole
O/sec
hre
Channel Flow
BC
CD
DE
Paved
Unpaved
Unpaved
20.33
16.13
16.13
84.15
12.2
13.05
0.024
0.320
0.077
3.15
9.13
4.48
OAOT
0.000
1 0.001
Sheet Flow Tt
novidConcentration,Te................................
0.1828
hra
him
mine
'a
0.1712
10
3
TR55, Table 3-1)
It
in
Ole
has
CN (WEIGHTED) 88
REVISIONS
REV DATE DESCRIPTION
Dominion
Energy
gai consultants
y
gaiconsultants
STORMWATER MANAGEMENT
DRAINAGE AREA MAPS & ROUTING DIAGRAMS
HOLLYMEADE SUBSTATION EXPANSION
ALBEMARLE COUNTY VIRGINIA
OPERATIONAL REGION B/M No. SCALE 1" = 200'
PROJECT F NAME DATE SHEET: O24
DESIGNER
PROJECT ENGINEER DRAWING:
APPROVED BY 220236-00-000-00-C-024
2 1
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7
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TIME OF CONCENTRATION: 6 MIN
IIII I I 1 PRE -DEVELOPED DRAINAGE AREA 2
(1.02AC)
TIME OF CONCENTRATION: 6 MIN
1\\ 11 11111\ \\\ A
NOTES:
I 1 I III I \\\ ( 1. REFER TO SHEETS 021 THROUGH 024 FOR OVERALL
FLOW RATE CALCULATIONS FOR INDIVIDUAL POI-S.
IIII \\\ 2. A TIME OF CONCENTRATION OF 6 MIN WAS USED DUE TO
THE CALCULATED VALUE BEING UNDER 6 MIN.
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PROJECT NO. PRE -DEVELOPED STORMWATER DRAINAGE AREA MAP
DATE: 08/04/2022 PROJECT NO.
DRAWN BY: R HOLLYMEADE SUBSTATION
/04/2
SCALE: ill =60' ALBEMARLE COUNTY, VIRGINA
PRE -DEVELOPED 2-YEAR ROUTING
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PRE -DEVELOPED DRAINAGE AREA: Inlet 1
A, area
acres
C, Runoff
Coefficient
Ax C
Land Cover Description
Impervious
0.68
0.70
0.476
Managed Turf
0.02
0.17
0.0034
Forest/Open Space
0.24
0
Sum: 0.70
Sum: 0.4794
Weighted C Factor, FAxC/Total Area 0.68
PRE -DEVELOPED DRAINAGE AREA: Inlet 2
A, area
acres
C, Runoff
Coefficient
A x C
Land Cover Description
Impervious
0.70
0.70
0.49
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0.30
0.17
0.051
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0.02
0.24
0.0048
Sum: 1.02
Sum: 0.5458
Weighted C Factor, FAxC/Total Area 0.54
PRE -DEVELOPED 10-YEAR ROUTING
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REVISIONS
I REV I DATE I DESCRIPTION
ism
Dominion
Energy
CALCULATIONS
y
galconsultants
HOLLYMEADE SUBSTATION EXPANSION
ALBEMARLE COUNTY VIRGINIA
OPERATIONAL REGION B/M No. SCALE NTS
PROJECT I NAME DATE SHEET: 027
DESIGNER
PROJECT ENGINEER DRAWING:
APPROVED BY 220236-00-000-00-C-02 /
3 2 1
A
r:?
7
5
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PROJECT NO. POST -DEVELOPED STORMWATER DRAINAGE AREA MAP
DATE: 08/04/2022 PROJECT NO.
DRAWN BY: R HOLLYMEADE SUBSTATION
/04/2
SCALE: ill 80' ALBEMARLE COUNTY, VIRGINA
POST -DEVELOPED 2-YEAR ROUTING
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OVERALL DRAINAGE AREA
POST -DEVELOPED DRAINAGE AREA 1
(0.70 AC)
TIME OF CONCENTRATION: 6 MIN
POST -DEVELOPED DRAINAGE AREA 2
(0.18 AC)
TIME OF CONCENTRATION: 6 MIN
POST -DEVELOPED DRAINAGE AREA 3
(0.27 AC)
TIME OF CONCENTRATION: 6 MIN
POST -DEVELOPED DRAINAGE AREA 4
(0.47 AC)
TIME OF CONCENTRATION: 6 MIN
POST -DEVELOPED DRAINAGE AREA 5
(0,16 AC)
TIME OF CONCENTRATION: 6 MIN
1. REFER TO SHEETS 021 THROUGH 024 FOR OVERALL FLOW
RATE CALCULATIONS FOR INDIVIDUAL POI'S.
2. A TIME OF CONCENTRATION OF 6 MIN WAS USED DUE TO
THE CALCULATED VALUE BEING UNDER 6 MIN.
SCALE: 1" = 80'
80 0 80 160
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POST -DEVELOPED DRAINAGE AREA: Inlet 1
A, area
acres
C, Runoff
Coefficient
A x C
Land Cover Description
Impervious
0.68
0.70
0.476
Managed Turf
0.02
0.17
0.0034
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1 0.00
0.24
0
Sum: 0.70
Sum: 0.4794
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POST -DEVELOPED DRAINAGE AREA: Inlet 2
A, area
acres
C, Runoff
Coefficient
A x C
Land Cover Description
Impervious
0.14
0.70
0.098
Managed Turf
0.04
0.17
0.0068
Forest/Open Space
1 0.00
1 0.24
0
Sum: 0.18
Sum: 0.1048
Weighted C Factor, fAxC/Total Area 0.58
POST -DEVELOPED DRAINAGE AREA: Inlet 3
A, area
acres
C, Runoff
Coefficient
A x C
Land Cover Description
Impervious
0.23
0.70
0.161
Managed Turf
0.03
0.17
0.0051
Forest/Open Space
0.01
0.24
0.0024
Sum, 0.27
Sum: 0.1685
Weighted C Factor, fAxC/Total Area 0.62
POST -DEVELOPED DRAINAGE AREA: Inlet 4
A, area
acres
C, Runoff
Coefficient
A x C
Land Cover Description
Impervious
0.42
0.70
0.294
Managed Turf
0.04
0.17
0.0068
Forest/Open Space
0.01
0.24
0.0024
Sum: 0.47
Sum: 0.3032
Weighted C Factor, fAxC/Total Area 0.65
POST -DEVELOPED DRAINAGE AREA: Inlet 5
A, area
acres
C, Runoff
Coefficient
A x C
Land Cover Description
Impervious
0.16
0.70
0.112
Managed Turf
0.17
0
Forest/Open Space
0.24
0
Sum: 0.16
Sum: 0.112
Weighted C Factor, JAK/Total Area 0.70
POST -DEVELOPED 10-YEAR ROUTING
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I REV DATE
REVISIONS
DESCRIPTION
ism
Dominion
RWO Energy
CALCULATIONS
y
galconsultants
HOLLYMEADE SUBSTATION EXPANSION
ALBEMARLE COUNTY VIRGINIA
OPERATIONAL REGION B/M No. SCALE NTS
PROJECT NAME DATE SHEET: DESIGNER 028
PROJECT ENGINEER DRAWING:
APPROVED BY 220236-00-000-00-C-02F
2 1
A
8 7 6 5 4 2 2 1
It�1 1II% 1 LEGEND 5 6 3 4
Hydrograph Report Pond Report Hydrograph Report Pond Report
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OVERALL DRAINAGE AREA
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.L stage / Storage Table stage / Storage Table
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PROJECT NO. LEVEL SPREADER DRAINAGE AREA MAP FIGURE NO.
am o.m
DRAWN BY: ELLISJR HOLLYMEADE SUBSTATION IIW Dominion
DATE: 09/06/2022
PROJECT NO. /Energy® 0.00 am am
f
SCALE: 1"=80' ALBEMARLE COUNTY VIRGINA
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B
B
REVISIONS
y
gaiconsultants
WEIR COEFFICIENT TAKEN FROM THE HYDRAFLOW HYDROGRAPH EXTENSION FOR AUTODESK CIVIL 3D 2019.
Table 7-1 Allowable Velocity and Shear Stress Values for Lined Ditches
WEIR EQUATION
Q=C W L<H2/3
• Q= FLOW RATE
• Cw= WEIR COEFFICIENT
• H= DRIVING HEAD
CONTINUITY EQUATION
Q=V'A
• V=VELOCITY
• A= CROSS SECTIONAL AREA OF FLOW = (L-3-H)
VELOCITY EQUATION
V=1.5-Cw`H112
A
Level Spreader
Allowable
Level Spreader
Storm Event
Max Flow Rat (Cu.
Level Spreader Length
Driving Head (ft)
Weir Coefficient
Max Velocity
Velocity
Grass
Ft/s)
(ft)
(ft/s)
( ft/s)
Lining
1
2-Yr
1.398
140
0.02
3.33
0.71
4.00
VDOT EC-2
1
10-Yr
2.564
140
0.03
3.33
0.87
4.00
VDOT EC-2
2
2-Yr
0.508
63
0.02
3.33
0.71
4.00
VDOT EC-2
2
10-Yr
0.958
63
0.03
3.33
0.87
4.00
VDOT EC-2
REV j DATE DESCRIPTION
.00 Dominion
RWO Energy
CALCULATIONS
A
HOLLYMEADE SUBSTATION EXPANSION
ALBEMARLE COUNTY VIRGINIA
OPERATIONAL REGION B/M No. I SCALE NTS
PROJECT NAME DATE SHEET: 029
DESIGNER
PROJECT ENGINEER DRAWING:
APPROVED BY 220236-00-000-00-C-02
8 7 6 5 4 3 2 1
Type of
Maximum
Maximum
Lining
Allowable Velocity
Allowable
(fps)
Shear Stress
(Ib/fe)
Bare Earth
(See Appx
Varies
Varies
7D-2)
VDOT EC-2
Type-1
4.0
1.5
VDOT EC-2
1.75
Type-2
VDOT EC-2
Type-3
4.0
2.0
VDOT EC-2
Type-4
4.0
2.25
VDOT EC-3
Type 1
7.0
6.0
VDOT EC-3
Type 2
10.0
8.0
VDOT EC-3
Type-3
N/A
10.0
Concrete
NA
NA
VDOT Riprap
Based on Shear
Varies
Stress