HomeMy WebLinkAboutWPO202100029 Plan - VSMP 2021-06-08WESTERN ALBEMARLE HIGH SCHOOL
MODULAR CLASSROOM ADDITION AND RENOVATION
SITE DATA:
TAX MAP PARCEL: 05600-00-00-017CO
LIMITS OF DISTURBANCE: 0.55 AC.
ZONING: RA
SETBACK: 25FRONT
25SIDE
35' REAR
MAGISTERIAL DISTRICT: WHITE HALL
SOURCE TOPOGRAPHY: TIMMONS GROUP, APRIL 2021
DATUM: HORIZONTAL: NAD83 (NA2011) VIRGINIA STATE GRID SOUTH
ZONE
VERTICAL: NAVD88 ESTABLISHED THROUGH LEICA
SMARTNET
BUILDING HEIGHT: 18.33' (ADDITION)
BUILDING AREA: 7,750 SF
PROPOSED USES: MODULAR CLASSROOM ADDITION AND ASSOCIATED SITE WORK
WETLAND IMPACTS: NONE
WATER SUPPLY: ACSA
SANITARY SEWER: EXISTING SEWER SYSTEM
DRAINAGE DISTRICT: STOCKTON CREEK
THERE ARE NO CRITICAL SLOPES LOCATED WITHIN THE PROJECT LIMITS.
THERE ARE NO CONSTRUCTION ACTIVITIES PROPOSED WITHIN THE 100-YR FLOODPLAIN.
THE SITE IS LOCATED IN A WATER SUPPLY PROTECTION DISTRICT.
VSMP PLAN
COUNTY OF ALBEMARLE, VIRGINIA
ALBEMARLE COUNTY PUBLIC SCHOOLS DISTRICT
06/03/2021
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OWNER:
ALBEMARLE COUNTY SCHOOL BOARD
401 MCINTIRE RD
CHARLOTTESVILLE, VA 22902
CONTACT: JOE LETTERI
TELEPHONE: (434) 975-9340
FAX: (434) 975-9341
ENGINEER OF RECORD:
TIMMONS GROUP
608 PRESTON AVE. SUITE 200,
CHARLOTTESVILLE, VA 22903
CONTACT: JONATHAN SHOWALTER, P.E.
TELEPHONE: 434-327-1681
JONATHAN.SHOWALTER@TIMMONS.COM
APPROVED
by the Albemarle County
Community Development Department
Date 06/08/2021
File WP0202100029
Sheet List Table
Sheet Number
Sheet Title
C0.0
COVER
C1.0
NOTES & DETAILS
C1.1
NOTES & DETAILS
C2.0
EXISTING CONDITIONS & DEMO PLAN
C3.0
EROSION & SEDIMENT CONTROL NOTES & DETAILS
C3.1
EROSION & SEDIMENT CONTROL NOTES & DETAILS
C3.2
EROSION & SEDIMENT CONTROL PLAN - PHASE I
C3.3
EROSION & SEDIMENT CONTROL PLAN - PHASE II
C4.0
LAYOUT AND UTILITY PLAN
C5.0
GRADING AND DRAINAGE PLAN
C6.0
STORMWATER MANAGEMENT PLAN
C6.1
STORMWATER CALCULATIONS
TOTAL NUMBER OF SHEETS = 12
SIGNATURE PANEL:
APPROVAL
DEPARTMENT OF COMMUNITY DEVELOPMENT
PLANNING & ZONING
ENGINEERING
INSPECTIONS
ARCHITECTURAL REVIEW BOARD
DEPARTMENT OF FIRE AND RESCUE
ALBEMARLE COUNTY SERVICE AUTHORITY
VIRGINIA DEPARTMENT OF TRANSPORTATION
HEALTH DEPARTMENT
DATE
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Line. No. 0407057151
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GENERALNOTES
1. ALL MATERIALS AND CONSTRUCTION METHODS SHALL BE IN ACCORDANCE WITH CURRENT VIRGINIA DEPARTMENT OF
TRANSPORTATION'S SPECIFICATIONS AND STANDARDS.
2. PRIOR TO ANY CONSTRUCTION, THE CONTRACTOR SHALL CONSULT THE ENGINEER AND VERIFY THE APPROVAL OF THE PLANS
BY ALL FEDERAL, STATE AND LOCAL AGENCIES.
3. LAND USE PERMITS (LUP-A) MUST BE OBTAINED FROM THE VIRGINIA DEPARTMENT OF TRANSPORTATION PRIOR TO BEGINNING
ANY CONSTRUCTION WITHIN THE EXISTING STATE MAINTAINED RIGHT OF WAY (INCLUDING ACCESS).
4. THE CONTRACTOR SHALL VERIFY THE ELEVATIONS OF ALL POINTS OF CONNECTION OR PROPOSED WORK TO EXISTING CURBS,
SANITARY LINES, WATERLINES, ETC, PRIOR TO CONSTRUCTION.
5. UPON DISCOVERY OF SOILS THAT ARE UNSUITABLE FOR FOUNDATIONS, SUBGRADES, OR OTHER ROADWAY CONSTRUCTION
PURPOSES, THE CONTRACTOR SHALL IMMEDIATELY CONTACT THE OWNER. THESE AREAS SHALL BE EXCAVATED BELOW PLAN
GRADE AS DIRECTED BY THE OWNER, BACKFILLED WITH SUITABLE MATERIAL AND COMPACTED IN ACCORDANCE WITH THE
CURRENT VERSION OF THE VDOT ROAD AND BRIDGE STANDARDS AND SPECIFICATIONS.
6. ALL STORM SEWER DESIGN AND CONSTRUCTION TO BE IN ACCORDANCE WITH VDOT I AND I LD-94 (D) 121.13.
7. ALL STORM SEWER PIPE SHALL BE REINFORCED TONGUE AND GROVE CONCRETE PIPE IN ACCORDANCE WITH ASTM-C-76. PIPE
WITHIN THE RIGHT OF WAY SHALL BE MINIMUM CLASS III OR GREATER IN ACCORDANCE WITH CURRENT VDOT STANDARDS AND
SPECIFICATIONS.
8. IF PRE -CAST UNITS ARE TO BE USED, VDOT SHALL BE NOTIFIED AND THE MANUFACTURER SHALL SUBMIT DRAWING DETAILS FOR
REVIEW. CERTIFICATION AND VDOT STAMP WILL BE REQUIRED ON ALL UNITS.
9. ALL CONCRETE SHALL BE A3-AE (AIR ENTRAINED 3,000 PSI), UNLESS OTHERWISE NOTED.
10. DESIGN CHANGES, SPECIFIED MATERIALS CHANGES AND/OR FIELD CHANGES FROM THE APPROVED PLANS NEED TO BE
RESUBMITTED TO THE ENGINEER PRIOR TO PROCEEDING WITH THE WORK. A LETTER OF EXPLANATION SHALL ACCOMPANY THE
REVISED PLANS AND/OR THE DRAINAGE CALCULATIONS, WHICH MUST BE SUBMITTED AND APPROVED BY THE ENGINEER.
11. CONTRACTOR SHALL VERIFY LOCATION AND ELEVATION OF ALL UNDERGROUND UTILITIES SHOWN ON PLANS IN AREAS OF
CONSTRUCTION PRIOR TO STARTING WORK. CONTACT ENGINEER IMMEDIATELY IF LOCATION OR ELEVATION IS DIFFERENT FROM
THAT SHOWN ON PLAN. IF THERE APPEARS TO BE A CONFLICT, AND/OR UPON DISCOVERY OF ANY UTILITY NOT SHOWN ON THIS
PLAN, CALL MISS UTILITY OF CENTRAL VIRGINIA AT 1-800-552-7001. THE OWNER SHALL BE RESPONSIBLE FOR THE RELOCATION
OF ANY UTILITY WITHIN EXISTING AND/OR PROPOSED RIGHT-OF-WAY REQUIRED BY THE DEVELOPMENT.
12. THE INSTALLATION OF SEWER, WATER, AND GAS MAINS (INCLUDING SERVICE LATERALS AND SLEEVES) SHALL BE COMPLETED
PRIOR TO THE PLACEMENT OF AGGREGATE BASE COURSE.
13. ALBEMARLE COUNTY APPROVAL OF CONSTRUCTION PLANS DOES NOT PRECLUDE THE RIGHT TO REQUIRE ADDITIONAL
FACILITIES AS DEEMED NECESSARY.
14. A PRIME COAT SEAL BETWEEN THE AGGREGATE BASE AND BITUMINOUS CONCRETE WILL BE REQUIRED AT THE RATE OF 0.30
GALLONS PER SQUARE YARD (REC-250 PRIME COAT) PER VDOT STANDARDS AND SPECIFICATIONS.
15. THE SCHEDULING OF AGGREGATE BASE INSTALLATION AND SUBSEQUENT PAVING ACTIVITIES SHALL ACCOMMODATE FORECAST
WEATHER CONDITIONS PER SECTION 315 OF THE ROAD AND BRIDGE SPECIFICATIONS.
16. THE OWNERS REPRESENTATIVE SHALL HAVE APPROVED THE AGGREGATE BASE COURSE(S) FOR DEPTH, TEMPLATE AND
PERFORMED THE REQUIRED FIELD INSPECTION (PROOF ROLL) PRIOR TO PLACEMENT OF ANY SURFACE COURSE(S). CONTACT
THE OWNER FOR INSPECTION FOR THE AGGREGATE BASE COURSE(S) 48 HOURS PRIOR TO APPLICATION OF THE SURFACE
COURSE(S).
17. A GEOTECHNICAL ENGINEER IS TO ASCERTAIN CAUSE AND CERTIFY RECOMMENDED METHOD OF REPAIR FOR ALL PAVEMENT
STRUCTURAL FAILURES PRIOR TO STATE ACCEPTANCE.
18. ALL VEGETATION AND ORGANIC MATERIAL MATERIAL IS TO BE REMOVED FROM THE PROPOSED PAVEMENT LIMITS PRIOR TO
CONDITIONING OF THE SUBGRADE.
19. CERTIFICATION AND SOURCE OF MATERIALS ARE TO BE SUBMITTED TO THE OWNER FOR ALL MATERIALS AND BE IN
ACCORDANCE WITH THE ROAD AND BRIDGE SPECIFICATIONS, AND ROAD AND BRIDGE STANDARDS.
20. ALL APPROACH GUTTERS TO SAG INLETS SHALL MAINTAIN A MINIMUM SLOPE OF 0.004 ft./ft.
21. ALL NEW HANDICAP ACCESSIBLE REQUIREMENTS ON -SITE AND WITHIN ALL NEW STRUCTURES SHALL COMPLY WITH THE 2009
UNIFORM STATEWIDE BUILDING CODE, 2009 VIRGINIA CONSTRUCTION CODE, 2010 ADA STANDARDS FOR ACCESSIBLE DESIGN
AND ICC/ANSI A117.1-03.
22. REFER TO SHEET L1.0 FOR ALL LANDSCAPING GENERAL NOTES.
23. VISIBILITY OF ALL MECHANICAL EQUIPMENT FROM THE ENTRANCE CORRIDOR SHALL BE ELIMINATED.
24. ALL WATER LINES, SEWER LINES, AND FIRE LINES FROM THE MAIN TO THE STRUCTURE MUST HAVE A VISUAL INSPECTION
PERFORMED BY THE BUILDING DEPARTMENT.
25. ALL ROOFDRAINS SHALL DISCHARGE IN A MANNER NOT TO CAUSE A PUBLIC NUISANCE AND NOT OVER SIDEWALKS.
26. BUILDING OR STRUCTURES BUILT BEFORE JANUARY 1, 1985 MUST HAVE AN ASBESTOS SURVEY PERFORMED IN ORDER TO APPLY
FOR A PERMIT. ASBESTOS REMOVAL PERMITS ARE REQUIRED IF POSITIVE FOR SUCH. CONTACT VDOLI FOR ADDITIONAL
REQUIREMENTS AND PERMITS FOR DEMOLITION PROJECTS.
27. BUILDING INSPECTIONS MUST VERIFY PROPER ABANDONMENT OF SITE UTILITIES BEFORE CONCEALMENT.
GENERAL CONSTRUCTION NOTES FOR EROSION AND
SEDIMENT CONTROL
1. THE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO THE PRE -CONSTRUCTION CONFERENCE, ONE
WEEK PRIOR TO THE COMMENCEMENT OF LAND DISTURBING ACTIVITY, AND ONE WEEK PRIOR TO THE FINAL INSPECTION.
2. ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CONSTRUCTED AND MAINTAINED ACCORDING TO MINIMUM
STANDARDS AND SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA
REGULATIONS VR 625-02-00 EROSION AND SEDIMENT CONTROL REGULATIONS.
3. ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR AS THE FIRST STEP IN CLEARING.
4. A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE MAINTAINED ON THE SITE AT ALL TIMES.
5. PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON THESE PLANS (INCLUDING, BUT
NOT LIMITED TO, OFF -SITE BORROW OR WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION
CONTROL PLAN TO THE OWNER FOR REVIEW AND APPROVAL BY THE PLAN APPROVING AUTHORITY.
6. THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO
PREVENT EROSION AND SEDIMENTATION AS DETERMINED BY THE PLAN APPROVING AUTHORITY.
7. ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL TIMES DURING LAND DISTURBING
ACTIVITIES AND DURING SITE DEVELOPMENT UNTIL FINAL STABILIZATION IS ACHIEVED.
8. DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED FILTERING DEVICE.
9. THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY AND AFTER EACH RUNOFF -PRODUCING
EVENT. ANY NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE EFFECTIVENESS OF THE EROSION CONTROL DEVICES SHALL
BE MADE IMMEDIATELY.
10. ALL FILL MATERIAL TO BE TAKEN FROM AN APPROVED, DESIGNATED BORROW AREA.
11. ALL WASTE MATERIALS SHALL BE TAKEN TO AN APPROVED WASTE AREA. EARTH FILL SHALL BE INERT MATERIALS ONLY, FREE
OF ROOTS, STUMPS, WOOD, RUBBISH, AND OTHER DEBRIS.
12. BORROW OR WASTE AREAS ARE TO BE RECLAIMED WITHIN 7 DAYS OF COMPLETION PER ZONING ORDINANCE SECTION 5.1.28.
13. ALL INERT MATERIALS SHALL BE TRANSPORTED IN COMPLIANCE WITH SECTION 13-301 OF THE CODE OF ALBEMARLE.
14. BORROW, FILL OR WASTE ACTIVITY INVOLVING INDUSTRIAL -TYPE POWER EQUIPMENT SHALL BE LIMITED TO THE HOURS OF
7:OOAM TO 9:OOPM.
15. BORROW, FILL OR WASTE ACTIVITY SHALL BE CONDUCTED IN A SAFE MANNER THAT MAINTAINS LATERAL SUPPORT, OR ORDER
TO MINIMIZE ANY HAZARD TO PERSONS, PHYSICAL DAMAGE TO ADJACENT LAND AND STRUCTURES/IMPROVEMENTS, AND
DAMAGE TO ANY PUBLIC STREET BECAUSE OF SLIDES, SINKING, OR COLLAPSE.
16. THE OWNER SHALL RESERVE THE RIGHT TO INSTALL, MAINTAIN, REMOVE OR CONVERT TO PERMANENT STORMWATER
MANAGEMENT FACILITIES WHERE APPLICABLE ALL EROSION CONTROL MEASURES REQUIRED BY THIS PLAN REGARDLESS OF
THE SALE OF ANY LOT, UNIT, BUILDING OR OTHER PORTION OF THE PROPERTY.
17. TEMPORARY STABILIZATION SHALL BE TEMPORARY SEEDING AND MULCHING. SEEDING IS TO BE AT 75 LBS/ACRE, AND IN THE
MONTHS OF SEPTEMBER TO FEBRUARY TO CONSIST A 50/50 MIX OF ANNUAL RYEGRASS AND CEREAL WINTER RYE, OR IN
MARCH AND APRIL TO CONSIST OF ANNUAL RYE, OR MAY THROUGH AUGUST TO CONSIST OF GERMAN MILLET. STRAW MULCH IS
TO BE APPLIED AT 80LBS/100SF. ALTERNATIVES ARE SUBJECT TO APPROVAL BY THE COUNTY EROSION CONTROL INSPECTOR.
18. PERMANENT STABILIZATION SHALL BE LIME AND FERTILIZER, PERMANENT SEEDING, AND MULCH. AGRICULTURAL GRADE
LIMESTONE SHALL BE APPLIED AT 90LBS/1000SF, INCORPORATED INTO THE TOP 4-6 INCHES OF SOIL. FERTILIZER SHALL BE
APPLIED AT 1000LBS/ACRE AND CONSIST OF A 10-20-10 NUTRIENT MIX. PERMANENT SEEDING SHALL BE APPLIED AT
180LBS/ACRE AND CONSIST OF 95% KENTUCKY 31 OR TALL FESCUE AND 0-5% PERENNIAL RYEGRASS OR KENTUCKY
BLUEGRASS. STRAW MULCH IS TO BE APPLIED AT 80LBS/100SF. ALTERNATIVES ARE SUBJECT TO APPROVAL BY THE COUNTY
EROSION CONTROL INSPECTOR.
19. MAINTENANCE: ALL MEASURES SHALL BE INSPECTED WEEKLY AND AFTER EACH RAINFALL EVENT. ANY DAMAGE OR CLOGGING
TO STRUCTURAL MEASURES SHALL BE REPAIRED IMMEDIATELY. SILT TRAPS SHALL BE CLEANED WHEN 50% OF THE WET
STORAGE VOLUME IS FILLED WITH SEDIMENT. ALL SEEDED AREAS SHALL BE RESEEDED WHEN NECESSARY TO ACHIEVE A
GOOD STAND OF GRASS. SILT FENCE AND DIVERSION DYKES WHICH COLLECT SEDIMENT TO HALF THEIR HEIGHT MUST BE
CLEANED AND REPAIRED IMMEDIATELY.
20. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS OF FINAL SITE
STABILIZATION, WHEN MEASURES ARE NO LONGER NEEDED, SUBJECT TO APPROVAL BY THE COUNTY EROSION CONTROL
INSPECTOR.
21. THIS PLAN SHALL BE VOID IF THE OWNER DOES NOT OBTAIN A PERMIT WITHIN 1 YEAR OF THE DATE OF APPROVAL. (WATER
PROTECTION ORDINANCE SECTION 17-204G.)
22. PERMANENT VEGETATION SHALL BE INSTALLED ON ALL DENUDED AREAS WITHIN NINE (9) MONTHS AFTER THE DATE THE LAND
DISTURBING ACTIVITY COMMENCED. (WATER PROTECTION ORDINANCE SECTION 17-207B)
ALBEMARLE COUNTY ENGINEERING GENERAL CONSTRUCTION NOTES
1. PRIOR TO ANY CONSTRUCTION WITHIN ANY EXISTING PUBLIC RIGHT OF WAY, INCLUDING CONNECTION TO ANY EXISTING ROAD,
A PERMIT SHALL BE OBTAINED FROM THE VIRGINIA DEPARTMENT OF TRANSPORTATION (VDOT). THIS PLAN AS DRAWN MAY NOT
ACCURATELY REFLECT THE REQUIREMENTS OF THE PERMIT. WHERE ANY DISCREPANCIES OCCUR THE REQUIREMENTS OF THE
PERMIT SHALL GOVERN.
2. ALL MATERIALS AND CONSTRUCTION METHODS SHALL CONFORM TO CURRENT SPECIFICATIONS AND STANDARDS OF VDOT.
3. EROSION AND SILTATION CONTROL MEASURES SHALL BE PROVIDED IN ACCORDANCE WITH THE APPROVED EROSION CONTROL
PLAN AND MUST BE INSTALLED PRIOR TO ANY CLEARING, GRADING OR OTHER CONSTRUCTION.
4. ALL SLOPES AND DISTURBED AREAS ARE TO BE FERTILIZED, SEEDED AND MULCHED.
5. THE MAXIMUM ALLOWABLE SLOPE IS 2:1 (HORIZONTALMERTICAL). WHERE REASONABLY OBTAINABLE, LESSER SLOPES OF 3:1 OR
BETTER ARE TO BE ACHIEVED.
6. PAVED, RIP -RAP OR STABILIZATION MAT LINED DITCH MAY BE REQUIRED WHEN IN THE OPINION OF THE COUNTY ENGINEER, OR
DESIGNEE, IT IS DEEMED NECESSARY IN ORDER TO STABILIZE A DRAINAGE CHANNEL.
7. ALL TRAFFIC CONTROL SIGNS SHALL CONFORM WITH THE VIRGINIA MANUAL FOR UNIFORM TRAFFIC CONTROL DEVICES.
8. UNLESS OTHERWISE NOTED ALL CONCRETE PIPE SHALL BE REINFORCED CONCRETE PIPE - CLASS III.
9. ALL EXCAVATION FOR UNDERGROUND PIPE INSTALLATION MUST COMPLY WITH OSHA STANDARDS FOR THE CONSTRUCTION
INDUSTRY (29 CFR PART 1926).
ALBEMARLE COUNTY STORMWATER MANAGEMENT NOTES
1. ALL DAMS AND CONSTRUCTED FILL TO BE WITHIN 95% OF MAXIMUM DRY DENSITY AND 2% OF OPTIMUM MOISTURE CONTENT.
ALL FILL MATERIAL TO BE APPROVED BY A GEOTECHNICAL ENGINEER. A GEOTECHNICAL ENGINEER IS TO BE PRESENT DURING
CONSTRUCTION OF DAMS.
2. PIPE AND RISER JOINTS ARE TO BE WATERTIGHT WITHIN STORMWATER MANAGEMENT FACILITIES.
3. FOR TEMPORARY SEDIMENT TRAPS OR BASINS WHICH ARE TO BE CONVERTED TO PERMANENT STORMWATER MANAGEMENT
FACILITIES; CONVERSION IS NOT TO TAKE PLACE UNTIL THE SITE IS STABILIZED, AND PERMISSION HAS BEEN OBTAINED FROM
THE COUNTY EROSION CONTROL INSPECTOR.
BLASTING NOTES
1. BLASTING SHALL NOT BE PERMITTED ON THIS PROJECT.
SITE PLAN LEGEND
101- WATER
STORM PIPE
STORM MANHOLE
DROP INLET 8 STRUCTURE NO
CURB
CURB 8 GUTTER
LIMITS OF DISTURBANCE
X FENCE
XXX MAJOR CONTOUR
XXX MINOR CONTOUR
TC 725.94 PROPOSED SPOT ELEVATION
0 PARKING COUNT
GRADING
TC = TOP OF CURB
TW = TOP OF WALL
BW = BOTTOM OF WALL
TS = TOP OF STAIRS
BS = BOTTOM OF STAIRS
FC = FACE OF CURB
EP = EDGE OF PAVEMENT
EX. = EXISTING
PROP.=PROPOSED
APPROX. = APPROXIMATELY
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TOP OF CURB
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CONTINUE 21B STONE
BASE FROM ADJACENT
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CONTINUE 21B STONE BASE
FROM ADJACENT PAVEMENT
SECTION UNDER CURB
EXIST GRADE METAL INSPEC7I01V FRAME W/ SOLID LID
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DI CLEANOUT
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CLEANOUT DETAIL
2.0" BITUMINOUS CONCRETE SURFACE COURSE - SM-9.5A
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4" TYPE 21B AGGREGATE BASE COURSE
COMPACTED SUBGRADE
QED) DENOTES LIGHT DUTY ASPHALT PAVEMENT ON PLANS
LIGHT DUTY ASPHALT PAVEMENT SECTION
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R= %4"
..
COMPACTED SUBGRADE
CONTROL JOINT SPACED
AT WIDTH OF WALK (MAXIMUM)
CONCRETE SIDEWALK JOINT DETAIL
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NON -SLIP BROOM FINISH
n.
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EXPANSION JOINT AT MAX OF 30', WITH
PREMOLDED EXPANSION FILLER
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CONC. WALK
474
4" 21-B STONE
r `4" 3,000 PSI AIR -ENTRAINED
/ CONCRETE
COMPACTED SUBGRADE 4" TYPE 21 B STONE
NOTE: SIDEWALKS SHALL BE CONSTRUCTED IN
ACCORDANCE WITH VDOT STANDARDS.
CONCRETE SIDEWALK PAVEMENT SECTION
No Scale
° I
1 �OR AS SHOWN ON PLAN
WHEN NOT ALONG SIDEWALK
CURB WIPE DOWN DETAIL
No Scale
Asphalt Pavement Restoration Detail for Open Cut Utility Installations
Mill & resurface Mill & resurface
per Saw -cut existing pavement
to the full depth of asphalt 7.5" total asphalt
ITmlm. ITmin.concrete pavement
Asphalt Concrete Surface Material P
depth or equal to
the depth of existing
T6" min. Asphalt Concrete Base, Type SM-25.OA asphalt concrete,
whichever is greater
1.5" min.
Sub -base course depth
Aggregate Base Material, Type I
10' min.YP shall be 10" or equal to
Size No. 21 A or 21B depth of existing sub -base,
whichever is greater
�•--ryl
,. Bench ' Horizontal and vertical surfaces
6" Bench shall be tacked with RC-250 liquid
Min. Min. asphalt at a rate of 0.1 gallon per
NOTES: SY, or as determined by the
district administrator's designee
Asphalt Concrete Surface Material:
SM-9.5A for ADT < 10,000 Select Material Type I with minimum CBR = 30
SM-9.5D for ADT > 10,000
The district administrator's designee shall determine the Class I l material in accordance
with Secctionoon 302 of the Road and Bridge
restoration requirements for other pavement types. Specifications
"" Trench width and pipe bedding shall be in No. 26 or 27 aggregate pipe bedding in
accordance with VDOT Std. PB-1 accordance with Sections 205 & 302 of
the Road and Bridge Specifications
' 12 inches minimum beyond the edge of the trench ..
on longitudinal open cuts, or 25 feet minimum beyond
the trench cent dine on perpendicular open cuts, or as
determined by the district administrators designee.
Date: August 27, 2014
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THIS TOPOGRAPHIC SURVEY WAS COMPLETED UNDER THE
DIRECT AND RESPONSIBLE CHARGE OF JOSEPH C. MEDLEY
FROM AN ACTUAL GROUND SURVEY MADE UNDER MY
SUPERVISION; THAT THE ORIGINAL DATA WAS OBTAINED
ON THE FOLLOWING DATES: APRIL 13, 2021. THIS
BASE -MAP AND DIGITAL GEOSPATIAL DATA INCLUDING
METADATA MEETS MINIMUM ACCURACY STANDARDS
UNLESS OTHERWISE NOTED.
SURVEY NOTES
1. HORIZONTAL DATUM IS BASED ON NAD83 (NA2011),
VIRGINIA STATE GRID, SOUTH ZONE VERTICAL DATUM IS
BASED ON NAVD88. DATUM ESTABLISHED THROUGH
NETWORKRTKGPS (LEICA SmartNET) OBSERVATIONS.
2. TOPOGRAPHIC DATA DEPICTED BASED ONA CURRENT
FIELD SURVEY BY THIS FIRM, COMPLETED APRIL 13, 2021.
3. THIS IS NOT A BOUNDARY SURVEY,' WESTERN
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DEEDS AND PLATS OF RECORD AND RECOVERED
MONUMEN TA TION.
4. MISS UTILITY TICKET INITIATED, TICKET NO.
B109502497-DOB. NO UNDERGROUND UTILITYINVESTIGATION
BEYOND INFORMATION PROVIDED VIA MISS UTILITY HAS
BEEN CONDUCTED BY THIS FIRM.
5. NO TITLE REPORT FURNISHED, EASEMENTS MAYEXIST
WHICHARE NOT SHOWN HEREON.
6. CONTOUR INTERVAL = V
UN.1TK-lN N.WWALTER y
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N
EROSION AND SEDIMENT CONTROL NARRATIVE
MINIMUM STANDARDS:
GENERAL EROSION AND SEDIMENT CONTROL NOTES:
PROJECT DESCRIPTION
THIS PROJECT INCLUDES AN ADDITION OF A MODULAR CLASSROOM TO WESTERN ALBEMARLE HIGH SCHOOL, SITE
IMPROVEMENTS, AND ASSOCIATED UTILITIES & LANDSCAPING. THE LIMITS OF DISTURBANCE IS 0.55 AC..
ADJACENT PROPERTY
THESE IMPROVEMENTS ARE BEING MADE WITHIN THE PROPERTY BOUNDARY. THE PROPERTY IS BOUNDED BY ROCKFISH
GAP TURNPIKE TO THE NORTH, HIGHWAY ROUTE 64 BORDER THE SOUTH, MILLER SCHOOL ROAD TO THE EAST. THE WEST
SIDE IS BORDERED BY COMMERCIAL PROPERTIES.
EXISTING SITE CONDITIONS
THE SITE IS CURRENTLY THE LOCATION OF WESTERN ALBEMARLE HIGH SCHOOL.
OFF -SITE AREAS
NO OFF -SITE AREAS WILL BE DISTURBED AS A PART OF THIS PROJECT.
CRITICAL EROSION AREAS
NO CRITICAL EROSION AREA EXIST.
EROSION AND SEDIMENT CONTROL MEASURES
UNLESS OTHERWISE INDICATED, ALL VEGETATIVE AND STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES
SHALL BE CONSTRUCTED AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE
CURRENT ADDITION OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK. THE MINIMUM STANDARDS OF
THE VESCH SHALL BE ADHERED TO UNLESS OTHERWISE WAIVED OR APPROVED BY A VARIANCE BY LOCAL AUTHORITIES
HAVING JURISDICTION.
EROSION AND SEDIMENT CONTROL MAINTENANCE
ALL EROSION AND SEDIMENT CONTROL MEASURES SHALL BE MAINTAINED IN ACCORDANCE WITH VESCH AND THE
CONSTRUCTION SEQUENCE, INCLUDING THE INSPECTION OF ALL MEASURES AFTER ALL RAIN EVENTS.
STRUCTURAL PRACTICES:
1. TEMPORARY CONSTRUCTION ENTRANCE - 3.02 A TEMPORARY CONSTRUCTION ENTRANCE SHALL BE PROVIDED AT
THE LOCATION INDICATED ON THE PLANS. IT IS IMPERATIVE THAT THIS MEASURE BE MAINTAINED THROUGHOUT
CONSTRUCTION. ITS PURPOSE IS TO REDUCE THE AMOUNT OF MUD TRANSPORTED ONTO PAVED PUBLIC ROADS BY
MOTOR VEHICLES OR RUNOFF.
2. SILT FENCE BARRIER - 3.05 SILT FENCE SEDIEMENT BARRIERS SHALL BE INSTALLED DOWNSLOPE OF AREAS WITH
MINIMAL GRADES TO FILTER SETTLEMENT LADEN RUNOFF FROM SHEET FLOW AS INDICATED. ITS PRPOSE IS TO
PREVENT SEDIMENT FROM LEAVING THE SITE.
3. STORM DRAIN INLET PROTECTION - 3.07 STONE FILTERS SHALL BE PLACED AT THE INLET OF ALL DRAINAGE
STRUCTURES AS INDICATED ON PLANS. ITS PURPOSE IS TO PREVENT SEDIMENT FROM ENTERING THE STORM
DRAINAGE SYSTEM PRIOR TO PERMANENT STABILIZATION.
4. OUTLET PROTECTION - 3.18 STRUCTURALLY LINED APRONS PLACED AT THE OUTLETS OF PIPES OR CHANNEL SECTION
TO PREVENT SCOUR AND PROTECT THE OUTLETS STRUCTURE.
5. DUST CONTROL - 3.39 DUST CONTROL IS TO BE USED THROUGH THE SITE IN AREAS SUBJECT TO SURFACE AND AIR
MOVEMENT
6. TREE PROTECTION - 3.38 PROTECTION OF DESIRABLE TRESS FROM MECHANICAL AND OTHER INIUSRY DURING LAND
DISTURBING AND CONSTRUCTION ACTIVITY.
VEGETATIVE PRACTICES:
7. TEMPORARY SEEDING - 3.31 ALL DENUDED AREAS WHICH WILL BE LEFT DORMANT FOR MORE THAN 30 DAYS SHALL
BE SEEDED WITH FAST GERMINATING TEMPORARY VEGETATION IMMEDIATELY FOLLOWING GRADING OF THOSE
AREAS. SELECTION OF THE SEED MIXTURE SHALL DEPEND ON THE TIME OF YEAR IT IS APPLIED.
8. PERMANENT SEEDING - 3.32 FOLLOWING GRADING ACTIVITIES, ESTABLISH PERENNIAL VEGETATIVE COVER BY
PLANTING SEED TO REDUCE EROSION, STABILIZE DISTURBED AREAS, AND ENHANCE NATURAL BEAUTY.
MANAGEMENT STRATEGIES
1. PROVIDE SEDIMENT TRAPPING MEASURES AS A FIRST STEP IN GRADING, SEED AND MULCH IMMEDIATELY
FOLLOWING INSTALLATION.
2. PROVIDE TEMPORARY SEEDING OR OTHER STABILIZATION IMMEDIATELY AFTER GRADING.
3. ISOLATE TRENCHING FOR UTILITIES AND DRAINAGE FROM DOWNSTREAM CONVEYANCES IN ORDER TO MINIMIZE
PERIMETER CONTROLS.
4. ALL EROSION AND SEDIMENT CONTROL PRACTICES SHALL BE MAINTAINED UNTIL THEY ARE NO LONGER REQUIRED
TO COMPLY WITH THE CONTRACT DOCUMENTS OR STATE LAW.
PERMANENT STABILIZATION
ALL NON -PAVED AREAS DISTURBED BY CONSTRUCTION SHALL BE STABILIZED WITH PERMANENT SEEDING IMMEDIATELY
FOLLOWING FINISHED GRADING. SEEDING SHALL BE IN ACCORDANCE WITH STD. & SPEC. 3.32, PERMANENT SEEDING.
SEED TYPE SHALL BE AS SPECIFIED FOR "MINIMUM CARE LAWNS" AND "GENERAL SLOPES" IN THE HANDBOOK FOR
SLOPES LESS THAN 3:1. FOR SLOPES GREATER THAN 3:1, SEED TYPE SHALL BE AS SPECIFIED FOR "LOW MAINTENANCE
SLOPES" IN TABLE 3.32-D OF THE HANDBOOK. FOR MULCH (STRAW OR FIBER) SHALL BE USED ON ALL SEEDED
SURFACES. IN ALL SEEDING OPERATIONS SEED, FERTILIZER AND LIME SHALL BE APPLIED PRIOR TO MULCHING.
SEQUENCE OF INSTALLATION
PHASE I
1. A PRE -CONSTRUCTION MEETING IS REQUIRED WITH ALBEMARLE COUNTY E&S INSPECTOR, CONTRACTOR, OWNER,
AND ENGINEER. THIS MEETING SHALL TAKE PLACE AT THE COMMUNITY DEVELOPMENT OFFICE. CLEARING LIMITS
MUST BE FLAGGED PRIOR T THE MEETING WITH ONE 1 WEEK F NOTICE.
US GG 0 0 G 0 0
2. INSTALL CONSTRUCTION ENTRANCE, SUPER SILT FENCE, TREE PROTECTION AND INLET PROTECTION. E&S MEASURES
FOR MOBILE CLASSROOMS REMOVAL AREAS DENOTED ON PLANS. NO WORK SHALL BEGIN IN THOSE AREAS UNTIL
ALL ESC MEASURES IN THOSE AREAS ARE INSTALLED.
3. AFTER ALL EROSION AND SEDIMENT CONTROL MEASURES ARE IN PLACE, SITE WORK CAN BEGIN.
4. ROUGH GRADE PROJECT AREA.
5. SEED ALL DENUDED AREAS PER VESCH STANDARDS.
PHASE II
1. FINE GRADE PROJECT AREA. APPLY PERMANENT SOIL STABILIZATION TO THESE AREAS WITHIN SEVEN DAYS AFTER
FINAL GRADE IS ACHIEVED.
2. APPLY PERMANENT SOIL STABILIZATION TO THESE AREAS WITHIN SEVEN DAYS AFTER FINAL GRADE 1S ACHIEVED.
SILT FENCE MUST BE MAINTAINED THROUGH GRADING AND CONSTRUCTION.
3. ONCE CONSTRUCTION IS COMPLETE AND ALL CONTRIBUTING AREAS ARE STABILIZED, EROSION CONTROL MEASURES
CAN BE REMOVED UPON APPROVAL FROM THE E&S INSPECTOR.
AN EROSION AND SEDIMENT CONTROL PROGRAM ADOPTED BY A DISTRICT OR LOCALITY MUST BE CONSISTENT WITH
THE FOLLOWING CRITERIA, TECHNIQUES AND METHODS:
MS-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 30 DAYS. PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE
TO BE LEFT DORMANT FOR MORE THAN ONE YEAR.
MS-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.
MS-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.
MS-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.
MS-5. STABILIZATION MEASURES SHALL BE APPLIED TO EARTHEN STRUCTURES SUCH AS DAMS, DIKES AND
DIVERSIONS IMMEDIATELY AFTER INSTALLATION.
MS-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.
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 25-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.
MS-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.
MS-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.
MS-9. WHENEVER WATER SEEPS FROM A SLOPE FACE, ADEQUATE DRAINAGE OR OTHER
PROTECTION SHALL BE PROVIDED.
MS-10. ALL STORM SEWER INLETS THAT ARE MADE OPERABLE DURING CONSTRUCTION SHALL BE PROTECTED SO THAT
SEDIMENT -LADEN WATER CANNOT ENTER THE CONVEYANCE SYSTEM WITHOUT FIRST BEING FILTERED OR
OTHERWISE TREATED TO REMOVE SEDIMENT.
MS-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.
MS-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.
MS-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.
MS-14. ALL APPLICABLE FEDERAL, STATE AND LOCAL REGULATIONS PERTAINING TO WORKING IN OR CROSSING LIVE
WATERCOURSES SHALL BE MET.
MS-15. THE BED AND BANKS OF A WATERCOURSE SHALL BE STABILIZED IMMEDIATELY AFTER WORK IN THE
WATERCOURSE IS COMPLETED.
MS-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.
MS-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.
MS-18. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS AFTER
FINAL SITE STABILIZATION OR AFTER THE TEMPORARY MEASURES ARE NO LONGER NEEDED, UNLESS
OTHERWISE AUTHORIZED BY THE LOCAL PROGRAM 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.
MS-19. PROPERTIES AND WATERWAYS DOWNSTREAM FROM DEVELOPMENT SITES SHALL BE PROTECTED FROM
SEDIMENT DEPOSITION, EROSION AND DAMAGE DUE TO INCREASES IN VOLUME, VELOCITY AND PEAK FLOW
RATE OF STORMWATER RUNOFF FOR THE STATED FREQUENCY STORM OF 24-HOUR DURATION IN ACCORDANCE
WITH THE STANDARDS AND CRITERIA LISTED IN THE VIRGINIA EROSION AND SEDIMENT CONTROL
HANDBOOK, CHAPTER 8 PAGES 20-24.
ES-1: UNLESS OTHERWISE INDICATED, CONSTRUCT AND MAINTAIN ALL VEGETATIVE AND STRUCTURAL EROSION AND
SEDIMENT CONTROL PRACTICES ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE LATEST
EDITION OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS VR 625-02-00
EROSION AND SEDIMENT CONTROL REGULATIONS.
UN.1TR•\N N. WW'ALTER y
Lic. No. 0402057 151
ES-2: THE CONTROLLING EROSION AND SEDIMENT CONTROL AUTHORITY WILL MAKE A CONTINUING REVIEW AND �rJ 06/03/2021 ���
EVALUATION OF THE METHODS AND EFFECTIVENESS OF THE EROSION CONTROL PLAN. f' r
s
ES-3: PLACE ALL EROSION AND SEDIMENT CONTROL MEASURES PRIOR TO OR AS THE FIRST STEP IN CLEARING, GRADING, s/r�C;N,
OR LAND DISTURBANCE.
ES-4: MAINTAIN A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN ON THE SITE AT ALL TIMES. o E
N U
ES-5: PRIOR TO COMMENCING LAND -DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON THESE PLANS ¢ c
(INCLUDING, BUT NOT LIMITED TO, OFFSITE BORROW OR WASTE AREA), SUBMIT A SUPPLEMENTARY EROSION > E
CONTROL PLAN TO THE ARCHITECT/ENGINEER AND THE CONTROLLING EROSION AND SEDIMENT CONTROL AUTHORITY w °1 E
FOR REVIEW AND ACCEPTANCE. r .W�. >� 3..
w "3
ES-6: PROVIDE ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS o o 0 2 �.
DETERMINED BY THE RESPONSIBLE LAND DISTURBER. (MODIFIED NOTE) W M
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W M - l!j
ES-7: ALL DISTURBED AREAS SHALL DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL TIMES DURING a > o 0°'
LAND -DISTURBING ACTIVITIES AND DURING SITE DEVELOPMENT. Z w
I3
ES-8: DURING DEWATERING OPERATIONS, PUMP WATER INTO AN APPROVED FILTERING DEVICE. in a 3
ES-9: INSPECT ALL EROSION CONTROL MEASURES DAILY AND AFTER EACH RUNOFF- PRODUCING RAINFALL EVENT. MAKE Ln a
ANY NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE EFFECTIVENESS OF THE EROSION CONTROL DEVICES
IMMEDIATELY.
24
SOILS INFORMATION: M
v
W J
7B - BRADDOCK LOAM, 2 TO 7 PERCENT SLOPES, MORE THAN BO INCHES TO RESTRICTIVE FEATURES, WELL OWNED,
HYDROLOGIC SOIL GROUP: B
Ul
37C3 - HAYESVILLE CLAY LOAM, 7 TO 15 PERCENT SLOPES, MORE THAN 80 INCHES TO RESTRICTIVE FEATURES, WELL
DRAINED, HYDROLOGIC SOIL GROUP: B 0
x
0
37D3 - HAYESVILLE CLAY LOAM, 15 TO 25 PERCENT SLOPES, MORE THAN 80 INCHES TO RESTRICTIVE FEATURES, WELL p
DRAINED, HYDROLOGIC SOIL GROUP: B
H
0
GENERAL CONSTRUCTION NOTES FOR EROSION AND W
SEDIMENT CONTROL a
1. THE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO THE PRE -CONSTRUCTION CONFERENCE, ONE zz
WEEK PRIOR TO THE COMMENCEMENT OF LAND DISTURBING ACTIVITY, AND ONE WEEK PRIOR TO THE FINAL INSPECTION.
2. ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CONSTRUCTED AND MAINTAINED ACCORDING TO MINIMUM >
STANDARDS AND SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA
REGULATIONS VR 625-02-00 EROSION AND SEDIMENT CONTROL REGULATIONS. Oy
3. ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR AS THE FIRST STEP IN CLEARING.
4. A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE MAINTAINED ON THE SITE AT ALL TIMES.
5. PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON THESE PLANS (INCLUDING, BUT
NOT LIMITED TO, OFF -SITE BORROW OR WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION •
CONTROL PLAN TO THE OWNER FOR REVIEW AND APPROVAL BY THE PLAN APPROVING AUTHORITY.
6. THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO •
PREVENT EROSION AND SEDIMENTATION AS DETERMINED BY THE PLAN APPROVING AUTHORITY. •
7. ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL TIMES DURING LAND DISTURBING
ACTIVITIES AND DURING SITE DEVELOPMENT UNTIL FINAL STABILIZATION IS ACHIEVED. •
8. DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED FILTERING DEVICE.
9. THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY AND AFTER EACH RUNOFF -PRODUCING • •
EVENT. ANY NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE EFFECTIVENESS OF THE EROSION CONTROL DEVICES SHALL
BE MADE IMMEDIATELY. •
10. ALL FILL MATERIAL TO BE TAKEN FROM AN APPROVED, DESIGNATED BORROW AREA. •
11. ALL WASTE MATERIALS SHALL BE TAKEN TO AN APPROVED WASTE AREA. EARTH FILL SHALL BE INERT MATERIALS ONLY, FREE
OF ROOTS, STUMPS, WOOD, RUBBISH, AND OTHER DEBRIS.
12. BORROW OR WASTE AREAS ARE TO BE RECLAIMED WITHIN 7 DAYS OF COMPLETION PER ZONING ORDINANCE SECTION 5.1.28. •
13. ALL INERT MATERIALS SHALL BE TRANSPORTED IN COMPLIANCE WITH SECTION 13-301 OF THE CODE OF ALBEMARLE.
14. BORROW, FILL OR WASTE ACTIVITY INVOLVING INDUSTRIAL -TYPE POWER EQUIPMENT SHALL BE LIMITED TO THE HOURS OF
7:OOAM TO 9:OOPM.
15. BORROW, FILL OR WASTE ACTIVITY SHALL BE CONDUCTED IN A SAFE MANNER THAT MAINTAINS LATERAL SUPPORT, OR ORDER
TO MINIMIZE ANY HAZARD TO PERSONS, PHYSICAL DAMAGE TO ADJACENT LAND AND STRUCTURES/IMPROVEMENTS, AND
DAMAGE TO ANY PUBLIC STREET BECAUSE OF SLIDES, SINKING, OR COLLAPSE.
16. THE OWNER SHALL RESERVE THE RIGHT TO INSTALL, MAINTAIN, REMOVE OR CONVERT TO PERMANENT STORMWATER
MANAGEMENT FACILITIES WHERE APPLICABLE ALL EROSION CONTROL MEASURES REQUIRED BY THIS PLAN REGARDLESS OF
THE SALE OF ANY LOT, UNIT, BUILDING OR OTHER PORTION OF THE PROPERTY.
17. TEMPORARY STABILIZATION SHALL BE TEMPORARY SEEDING AND MULCHING. SEEDING IS TO BE AT 75 LBS/ACRE, AND IN THE
MONTHS OF SEPTEMBER TO FEBRUARY TO CONSIST A 50/50 MIX OF ANNUAL RYEGRASS AND CEREAL WINTER RYE, OR IN
MARCH AND APRIL TO CONSIST OF ANNUAL RYE, OR MAY THROUGH AUGUST TO CONSIST OF GERMAN MILLET. STRAW MULCH IS
TO BE APPLIED AT 80LBS/100SF. ALTERNATIVES ARE SUBJECT TO APPROVAL BY THE COUNTY EROSION CONTROL INSPECTOR.
18. PERMANENT STABILIZATION SHALL BE LIME AND FERTILIZER, PERMANENT SEEDING, AND MULCH. AGRICULTURAL GRADE
LIMESTONE SHALL BE APPLIED AT 90LBS/1000SF, INCORPORATED INTO THE TOP 4-6 INCHES OF SOIL. FERTILIZER SHALL BE
APPLIED AT 1000LBS/ACRE AND CONSIST OF A 10-20-10 NUTRIENT MIX. PERMANENT SEEDING SHALL BE APPLIED AT
180LBS/ACRE AND CONSIST OF 95% KENTUCKY 31 OR TALL FESCUE AND 0-5% PERENNIAL RYEGRASS OR KENTUCKY 0
BLUEGRASS. STRAW MULCH IS TO BE APPLIED AT 80LBS/100SF. ALTERNATIVES ARE SUBJECT TO APPROVAL BY THE COUNTY
EROSION CONTROL INSPECTOR.
19. MAINTENANCE: ALL MEASURES SHALL BE INSPECTED WEEKLY AND AFTER EACH RAINFALL EVENT. ANY DAMAGE OR CLOGGING
TO STRUCTURAL MEASURES SHALL BE REPAIRED IMMEDIATELY. SILT TRAPS SHALL BE CLEANED WHEN 50% OF THE WET
STORAGE VOLUME IS FILLED WITH SEDIMENT. ALL SEEDED AREAS SHALL BE RESEEDED WHEN NECESSARY TO ACHIEVE A
GOOD STAND OF GRASS. SILT FENCE AND DIVERSION DYKES WHICH COLLECT SEDIMENT TO HALF THEIR HEIGHT MUST BE
CLEANED AND REPAIRED IMMEDIATELY.
20. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS OF FINAL SITE
STABILIZATION, WHEN MEASURES ARE NO LONGER NEEDED, SUBJECT TO APPROVAL BY THE COUNTY EROSION CONTROL
INSPECTOR.
21. THIS PLAN SHALL BE VOID IF THE OWNER DOES NOT OBTAIN A PERMIT WITHIN 1 YEAR OF THE DATE OF APPROVAL. (WATER
PROTECTION ORDINANCE SECTION 17-204G.)
22. PERMANENT VEGETATION SHALL BE INSTALLED ON ALL DENUDED AREAS WITHIN NINE (9) MONTHS AFTER THE DATE THE LAND
DISTURBING ACTIVITY COMMENCED. (WATER PROTECTION ORDINANCE SECTION 17-207B)
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0511012021
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1. SET THE STAKES.
FLC
2. EXCAVATE A 4"X 4" TRENCH UPSLOPE
ALONG THE LINE OF STAKES.
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3. STAPLE FILTER MATERIAL TO STAKES AND 4. BACKFILL AND COMPACT THE
EXTEND IT INTO THE TRENCH. EXCAVATED SOIL.
SHEET FLOW INSTALLATION
(PERSPECTIVE VIEW)
♦ GRAVEL FILTER 1 2„
RUNOFF WATER WIRE MESH
FILTERED WATER
T
SEDIMENT
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CONCRETE "
GUTTER 12" CURB INLET
GRAVEL SHALL BE VDOT #3, #357 OR 5 COARSE AGGREGATE.
/���I�®�� ��glllllglllll�`M SPECIFIC APPLICATION: THIS METHOD OF INLET PROTECTION IS APPLICABLE AT
CURB INLETS WHERE PONDING IN FRONT OF THE STRUCTURE IS NOT LIKELY TO
POINTS A SHOULD BE HIGHER THAN POINT B. CAUSE INCONVENIENCE OR DAMAGE TO ADJACENT STRUCTURES AND
OSF DRAINAGEWAY INSTALLATION 3.05-2 IP UNPROTECTED AREAS. 3.07-6
(FRONT ELEVATION) O
SILT FENCE (W/O WIRE SUPPORT) STORMWATER INLET PROTECTION
No Scale No Scale
1. SET POSTS AND EXCAVATE A 4"X4"
TRENCH UPSLOPE ALONG THE LINE OF
POSTS. 6'
J /
3. ATTACH THE FILTER FABRIC TO
THE WIRE FENCE AND EXTEND IT
INTO THE TRENCH.
SILT FENCE
No Scale
2 X 4" WOOD
FRi —
1.5'
MAX
C
2. STAPLE WIRE FENCING
TO THE POSTS.
4. BACKFILL AND COMPACT THE
EXCAVATED SOIL.
FLOW
I -11
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TH WIRE SUPPO
SILT FENCE DROP INLET PROTECTION
PERSPECTIVE VIEWS
TYPICAL ORIENTATION OF VESCH TREATMENT 1 SOIL (STABILIZATION
BLANKET)
BM 3.36-1
DROP INLET SOIL STABILIZATION BLANKET (TREATMENT-1
WITH GRATE
col No Scale
DETAIL A
GATHER
EXCESS
AT
CORNERS
ELEVATION OF STAKE AND FABRIC ORIENTATION
SPECIFIC APPLICATION
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.
No Scale
POLYETHYLENE
FABRIC (ATTACH
TO POSTS WITH
METAL TIE WIRES
I�
'Te•i•' �:�J:••
PERSPECTIVE VIEW
METAL (T) OR
(U) POSTS
w
FABRIC
SAF PERSPECTIVE VIEW PERSPECTIVE VIEW
PLASTIC FENCE METAL FENCE
SAFETY FENCE
No Scale
PIPE OUTLET CONDITIONS
TABLE 3.31-B
ACCEPTABLE TEMPORARY SEEDING PLANT MATERIALS
"QUICK REFERENCE FOR ALL REGIONS"
PLANTING DATES SPECIES RATE (LBS./ACRE)
SEPT. 1 - FEB. 15 50/50 MIX OF
ANNUALRYEGRASS
(LOLIUM MULTI-FLORUM)
& 50-100
CEREAL (WINTER) RYE
(SECALE CEREALE)
FEB. 16 -APR. 30 ANNUAL RYEGRASS 60-100
(LOLIUM MULTI-FLORUM)
TS MAY 1 - AUG. 31 GERMAN MILLET 50
(SETARIA ITALICA)
TEMPORARY SEEDING PLANT MATERIALS
No Scale
TABLE 3.32-D
SITE SPECIFIC SEEDING MIXTURES FOR PIEDMONT AREA
TOTAL LBS. PER ACRE
3.1-1 MINIMUM CARE LAWN
COMMERCIAL OR RESIDENTIAL 175-200 LBS.
KENTUCKY 31 OR TURF -TYPE TALL FESCUE 90-100%
IMPROVED PERENNIAL RYEGRASS 0-5%
KENTUCKY BLUEGRASS 0-5%
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 SLOPE (STEEPER THAN 3:1)
KENTUCKY 31 FESCUE 108 LBS.
RED TOP GRASS 2 LBS.
SEASONAL NURSE CROP ` 20 LBS.
CROWNVETCH " 20 LBS.
150 LBS.
` 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 ............................... ANNUAL RYE
NOVEMBER THROUGH FEBRUARY 15TH........................ WINTER RYE
" SUBSTITUTE SERICEA LESPEDEZA FOR CROWNVETCH EAST OF
FARMVILLE, VA (MAY THROUGH SEPTEMBER USE HULLED SERICEA, ALL
OTHER PERIODS, USE UNHULLED SERICEA). IF FLATPEA IS USED IN LIEU
OF CROWNVETCH, INCREASE RATE TO 30 LBS./ACRE. ALL LEGUME SEED
MUST BE PROPERLY INOCULATED. WEEPING LOVEGRASS MAY BE
PS ADDED TO ANY SLOPE OR LOW -MAINTENANCE MIX DURING WARMER
SEEDING PERIODS; ADD 10-20 LBS./ACRE IN MIXES.
PERMANENT SEEDING MIX FOR PIEDMONT AREA
No Scale
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:In M Dom
STANDARD ORANGE VINYL OR PLASTIC CONSTRUCTION
FENCE ATTACHED TO POSTS (PRE -WEATHERED WOOD,
GALVANIZED STEEL, IRON OR THICK PVC PLASTIC), AT LEAST
40" ABOVE FINISH GRADE WITH SPAN BETWEEN POSTS NO
GREATER THAN 6' ON CENTER. EVERY NINTH POST SHALL
CONTAIN A WARNING SIGN THAT CLEARLY IDENTIFIES THE
TP FENCE AS A TREE PROTECTION FENCE.
3.38
NO SCALE
TREE PROTECTION
No Scale
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MULTI -LEVEL
BRICK SCHOOL FACILITY
WESTERN ALBEMARLE H.S.
39' (5941 ROCKFISH GAP TPKE.)
-FFE=691.65'
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72„
EROSION CONTROL LEGEND
LIMITS OF CLEARING AND GRADING
SOIL AREA DIVIDE
SAF SAF— SAFETY FENCE 3.01
CONSTRUCTION ENTRANCE
INLET PROTECTION
TEMPORARY SEEDING
PERMANENT SEEDING
MULCHING
TP
Tp
TREE PROTECTION FENCE
DC
DUST CONTROL
BM
AREAS STEEPER THAN 3:1 TO BE
STABILIZED WITH STABILIZATION
BLANKET
3.02
3.07
3.31
3.32
3.35
3.38
3.39
3.36
* "VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK" SPECIFICATION NUMBER
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0511012021
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1 "=20'
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695.0
SHEET NO.
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or
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SAF
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INLET PROTECTION
3.07
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TEMPORARY SEEDING
3.31
PS
PERMANENT SEEDING
3.32
M U
MULCHING
3.35
TP
TP
TREE PROTECTION FENCE
3.38
DC
DUST CONTROL
3.39
BM
AREAS STEEPER THAN 3:1 TO BE
3.36
STABILIZED WITH STABILIZATION
BLANKET
* "VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK" SPECIFICATION NUMBER
MULTI -LEVEL
BR/CKSCHOOL FACILITY
WESTERN ALBEMARLE H. S.
39' (5941 ROCKFISH GAP TPKE)
—FFE=691.85'
2 LEVEL
BRICK SCHOOL
MHO FACILITY
TOP=691.64'
INV. IN=666.74' 12" DIP
/
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INV, OUT=686.62' 10" HDPE
SO INLET (2.0 DIA. NYLOPLAST)
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INV. IN=6686.87' 6"PVC
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/ 1 \ \ L '2"33EC i @5' :i25';ii
l \ \ . 1 TOP'o?�t; SD INLET (2.0 DIA. NYLOPLAST) 1
SSF UFO TOP=6Asmm IP SIN 94'12"HDPE
= 79 08' 12'HDPE ( ND) INV. UT=67 5' 15"HDPE
I I \ o FIBERAS-MARKED FRO
PRIOR SURREYS 2 DP I STORY
\ \ l I \ \ \ (NOrkARKED � � WOOD FRAME
\ \ \ l I I I \ \ \ \ \ NTEMRORARILY) \ 1 BLDG.
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25' SETBAC)K
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INV 1N=678.44' 15'HOPE
INV /N=678.32' 15"HOPE
TO OUTFALL
UTILITYBOXON
CONC PAD
® EXISTING
SEWER PUMP
SCALE 1 "=20'
0 20' 40'
UN.1TK-lN N.SHQWALTER y
Lic. No. 0402057151
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1. WATER SERVICE LINE TO BE 2" HDPE IPS DR11 (200 PSI) SHALL � L
BE MANUFACTURED FROM A PE 3408 RESIN LISTED WITH THE �0� .� l'PC
PLASTIC PIPE INSTITUTE (PPI) AS TR-4. THE RESIN MATERIAL 0�� �,
I o WILL MEET THE SPECIFICATIONS OF ASTM D3350-02 WITH A CELL
CLASSIFICATION OF PE 345464C. PIPE SHALL HAVE A ,U\ 1TH1\ ki. SH0W:ILTER >
MANUFACTURING STANDARD OF ASTM D2737 (COPPER TUBING Lic. No. 0402057151
SIZE), ASTM D2239 (IRON PIPE SIZE, CONTROLLED INSIDE A 06/03/2021
I DIAMETER) AND ASTM D3035 (IRON PIPE SIZE, CONTROLLED 'A� ��
OUTSIDE DIAMETER). THE PIPE SHALL CONTAIN NO RECYCLED AP \I
COMPOUNDS EXCEPT THAT GENERATED IN THE 'SS//� , �. , i 1-1�
MANUFACTURER'S OWN PLANT FROM RESIN OF THE SAME "'t��y
° SPECIFICATION FROM THE SAME RAW MATERIALS. ALL PIPES
I SHALL BE SUITABLE FOR USE AS PRESSURE CONDUTIS, AND
PER AWWA C901, HAVE NOMINAL BURST VALUES OF THREE o E
TIMES THE WORKING PRESSURE RATING (WPR) OF THE PIPE. N °
PIPE SHALL ALSO HAVE THE FOLLOWING AGENCY LISTINGS OF ¢ o
NSF 14 AND NSF 61. > E
I a 1 LEVEL 2. SEWER LATERAL SHALL HAVE 36" MIN. COVER AND A MIN. SLOPE w v E
p BRICKSCHOOL OF 1.04% AND BE 4" SCHEDULE 40 PVC IN ACCORDANCE WITH w .N 3
FACILITY SPECIFICATION ON PLUMBING PLANS. ¢ LL o 3
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STEEL STAIR 2019 SCIENCE'ADDITION
\ \ 22 TREADS, ( BRICK SCHOOL FACILITY p N
\ 23R/SERS WESTERNALBEMARLEH.S. > p
\ \ \ \ \ \\ FFE=693.39' 5941 ROCKFISH GAP TPKE. w w cv
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ENTFO ACSA \ W/RAIL ( F
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\ \ \ 18"MAPLE \ \ \ O CONC. 1� ` is DATE
\ \ I w I STEP 2"DEC / ` Q Q, 2 LEVEL
\ \ ` CONC. LEVEL 1 ��v�, 1 3 P �/ p O$/lO/2021
STEEL LANDING 2"DEC },aq 2"DECK I Va'�q/ BRICK SCHOOL O
_�D` \ LEVEL 2- - - _ _ ��/ FACILITY DRAWN BY
28"PINE ¢ S` v \/ MHD
\ \ \ \ \ \ 0 R // TOP=691.64'
���^��, INV. 1N=686.74' 12"DIP YT
\ \ \ \ \ \ \ \ \ \ \ - _ \ G RCO�'f+�UCT F.oR6 \ 2" DEC '+.ts' VO p'� / INV. 1N=690. 63' 3"PVC
\ \ \ \ - - _ - - - -UG-F/HE yti'�O \ �ONC TE FLUM C.\ ZDEC / / INV. OUT=686.62' 10"HDPE DESIGNED BY
\ \ \ \ 6" PINE \ \ \ \ 36" OAK - - \ Ly/TNES�S d� \\ RAIN TCJ A DITCH I qT \ SD INLET (2.0 D/A. NYLOPLAST)
PEDESTAL \ \ ,.,,�POS�p INLE R \ I C C. AM
T-� q 4N� I / TOP=690.40' •
'I'Os FR \ INV. IN=6686.87' 6" PVC
• CHECKED BY
q'NAap�c \ / ,T \ `I\ INV. OUT=686.52' 12" HOPE
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BENCHIDIA\RK RAISED LKVY WITH SCALE
\ \ \ \ \ \ \ \ \ \ \ AM�L SET ` \ AH P}ORAIL\S TO ERE ��/ Q }J� 1 "=20'
a ELEV=691.41' \ 2vo ii
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ASPHALT AND PARKING LOT. COORDINATE J cC
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a IRON,(F) / / / / / / / / / I I I \ \ J�Jj XISTING AT FROMPR/OR EYS
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30' RAMPMITH HANDRAILS T 1 123 LF HDPE TO EXISTING FACILITIES WITH w U
cc / / / I / I 1 I I I I I AND LANDINGS (DESIGNED I IPS DR11 PSI) `S Al PLUMBING PLANS AND PLUMBER U) D
cfOo I I I 1I I I 1 \OTHERS) WATER ER BEFORE BEGINNING U 0
CONSTRUCTION. J
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o I I I 9 -__ ` 1 TO_E_XISTINGAT SD CURB INLET W/MHD a Q
1 I 1 I 1 1 I � I I I I:,� Vtt TOP=683.77' J
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\ \ I I \ \ \ \ \ 1 SEWER PUMP
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\ \ \ \ \ SCALE 1 "=20'
25' SETBACK ! I I I \ \ \ \ to
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JOB NO.
ROUTING, SIIZING, AND CONNEINATE FINAL CTION R AND WATER 44695. 005
ION T EXISTING
FACILITIES WITH MEP ENGINEER PRIOR TO BEGINNING SHEET NO.
CONSTRUCTION. ALL PROPOSED UTILITIES TO BE C4 0
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22 TREADS,
23 RISERS
20'WATERLINE I \ W/RAIL
EASEMENTFORACSA
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\ \ I FFE-706 85' L 1
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PEDESTAL �F \ I
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LOW AREA TO s90 09' /\ `
\ \ \ BENCHNIFkRK
\ \ \6 \ \ \ \ \ MA�ITAIN POSITIVE - Nl1 L SET
DRAINAiEAROUND \ \ ` 690.20'
ELE\V=691.41'
\ \ \ \ 32"OAK \ \ \ 1`JILDING \ 6862' \ ` 690.20'
18" OAK\{v-,,\
GLEANOUT\ I 1
6"HDPE'`EILURIED
''PIPE PER ROOF
\DRAINA l
GRADAC2 NOTES, I DO\kN 1
(PC})TS
30"OAK \ \ I I TY \ /
\ \ \ \ \13'�IDE LE'/EL SPREA ER
I / \ FIFE 690.20
TO\1-IAN13tE DF?AINAGE \ `\ L_CJN AREA TO
FROMIROOF DRAINAGE \ \ I\\M�INTAIN POS'IFWE
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PIPFT6 UNDER TpAILE42 ABOVEIABO)/E / 615.87'
/ I / GRADE BY PLU ERAND /TIED/TO
WESTERNP)tvSPOUTS AND / / b \
U/KDERGROUN9flIPE (TYP.) / cow
/a IRON,() / i �0 1 1 I B� ��-�-��285.
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l + I I LEVEL 8
. AT1861.9'/ / /� / /� / I �✓ I I LANDING ///��``�\ , I
cO1 I AT 690.20
rl
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686
685.
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SD INLET (2.0 CIA. NYL OPLAST)
UFO TOP=683. 16'
INV - 79.08' 12" HDPE (POND)
FIBER ASYMRKED FROM_ _
l . IN=li79.01'' 1 PVC (S)
PRIOR \ \ \ l I \ \ \ \ N07%kARKED S %V. OU 78.95' 72" HDP
NTEMRORARILY)
I
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AT-69D.20
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MULTI -LEVEL
BR/CKSCHOOL FACILITY
WESTERN ALBEMARLE H.S.
{5941 ROCKFISH GAPTPKE)
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2 LEVEL
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BRICK SCHOOL
MHD FACILITY
TOP=691.64'
/
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INV. IN=666.74'12"DIP
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mo /�
INV. OUT=686.62' 10" HDPE
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SD INLET (2.0 DIA. NYLOPLAST)
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TOP=690.40'
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TOP 689.92 TOP 689.93
INV IN 686.03 (EXIST 12" HDPE) INV IN 685.60 (103)
INV OUT 685.82 (103) INV OUT 684.32 (101)
6AS
100: MH-1
STA 11+41.11
TOP 684.73
INV IN 681.06 (101)
INV OUT 679.32 (EXIST 12" HDPE.)
RQ5
EXISTING G
DE
690
690
\
PROPOSEM GRADE
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685
685
103
10.91' OF
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101
@ 2.00%
120.20, 0E
680
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680
675
675
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0 50
PROFILE SCALE
10+00 1+STR 104012+00 12+50
STR 100
HORIZ SCALE: 1 "=50'
VERT SCALE: 1 "=5
ROOFDRAIN AND GRADING NOTES:
1. PIPES FROM ROOFDRAINS TO HAVE A MINIMUM SLOPE OF 1.0% OR AS SPECIFIED ON PLAN.
2. SOUTHERN ROOF DRAINS FROM DOWNSPOUT TO HAVE A MINIMUM COVER OF 2.0'
3. CONTRACTOR TO VERIFY IF DOWNSPOUT BOOT CAN BE SUBSTITUTED FOR CLEANOUT. IF
NOT, PROVIDE CLEANOUTS AT ALL LOCATIONS WHERE ROOFDRAINS TURN OR CONNECT TO
PIPE OUT OF BUILDING.
4. CONTRACTOR TO FIELD VERIFY ALL EXISTING AND PROPOSED STORM INVERTS OUT OF THE
BUILDING AND CONFIRM REQUIRED SLOPES, COVER, CROSSING AND CONNECTION POINTS
CAN BE ARCHIVED. CONTRA TOR SHALL COORDINATE ANY CONFLICTS WITH ENGINEER
BEFORE BEGINNING CONST CTION.
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/ �O Vv
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SO CURB INLET W/MHD
TOP=683.77'
684.47' HC RAMP INV. 1N=678.44' 15"HOPE
15 INV. IN=676.32' 15"HOPE
TO OUTFALL
N
-664_ 12 y2
/GRATE
INV. � .94' 17" HOPE
INV. OUT=678.85' 15"HOPE
1 STORY ` UTILITYBOXON
WOOD FRAME CONC PAD
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SEWER PUMP
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STORMWATER
DRAINAGE AREAS
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WATER QUANTITY:
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IN THE DEVELOPED CONDITION THE RUNOFF FROM THE DISTURBED AREA WILL FLOW OFF
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REQUIREMENTS OF SECTION 9VAC25-970-66 SECTION D.
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WATER QUALITY CALCULATION (PHOSPHORUS REDUCTION REQUIRED)
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TOTAL ON SITE DISTURBED ACREAGE: 0.55 ACRESLu
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CREDITS. TO BE PURCHASED FROM A DEQ APPROVED CREDIT BANK IN ACCORDANCE WITH LIS CODE OF
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DEQ Virginia Runoff Reduction Method Re -Development Complfartce Spreadsheet -Version 3.0
-- 201.1 BMP 5tandards and Speclfkatlons rL• 2013 Draft BMP Standards and 5peclflcatlons
Project Narne: WAHS MudularClassraams
Date: 5f10f2021
Linear Development Project? No
Site Information
Post -Development Project (Treatment Volume and Loads)
Enter Total Disturbed Area (acres) 4 0.55
Pre -Re Development Land Cover (acres)
A Soils
B Soils
C soils
D So its
Totals
FaretrbVenSpace {area} - u nd uurbtd
O.00
fares Vapen space
hbmged Turf lane{ --d is Lu rued, graded
for yards ar uthe r turf tutx
0-50
frtpervdpsa Carer lanes)
O.r
OAS
Post- Deve lc ome nt Land Cover (acres)
A Sow
BSoils
Csoils
DSo&s
Totals
ForettbpenSpaoe laoej - undisturbed.
OOD
otectcd fore n W refprested
h4rEged Tud {aae.} -disturbed, graded
E32
for yards at :xhe r turf tote
032
kryservome Corer Iacesl
0.23
023
Areacheckl
OK.
I 03L
I OK.
tiY.
0.55
Constants
Annwl Rairr[SlIindiesl 43
iTargct RTirdall G_•ntlinchal LOD
Total Phaspharm frPl Eh1CIns Tl a26
Rundf Coefficients (RO
datainputcn8s
constant values
calculation calls
Check.
BMP Resign Specifications List.' 2013 Draft Stds & Specs
linear project? No
Land cover areas entered correctly? ✓
Total disturbed area entered? ✓
ASuis
asols
csoih
Osois
Forat/Open Space
0.02
Q43
0.04
0A5
Managed Turf
0.15
a20
G.22
025
trn{lerviOsb Crner
0.95
0.95
0.45
PISS
Pre-Ik Oevefoprnrnt
listed
Adjusted'
post ReDev.&New
Impervious;
icrest/Opal spn¢Caver {aQ
0.00
4A4
Famsy'Open Spaceesl
Cwerlaaesl
OOPI
Vieighted Rv{fucstl
0.0D
Weighed R.fforcul
0.00
0.00
%Forest
0%
%Forest O% 0%
Turf Cewerja -1
0.50
032
hUnage�el Caw •
TurManaged
0.32
'Weighted W{Ludl
0.21
Weighted Wltufl 0.2C 020
%Managed Turf
91%
86%
%Managed Turf
58%
Impervious Cover
{acres)
"23
hrpervio Cwenlauesl 0.v� OAS
Wlimpervioml
195
0.95
Wjenperviousl
0.95
Impen,i ous
9%
14%
%Imy_•n•:: is
42%
Fiord Site Ar®Tavel
0,55
TotarSe Areatarresl 0.ss 037
Site W
0.27
0.30
RrrW Post Dev Site Rv
&51
TreatmentVolume and
Nutrient Load
Final Pmt
Pry Re DewIDPament treatment Volume
Iaae ftl
'' c!2�
"'
Development
Treatment Valune
0.0235
Iarre ftl
Final pmt-
Pre-ReDevelopmentTreatment Volume
Imbicfeet)
,��
JJ�
Development
TreatmentVdune
1p25
{odsicfeetl
Fin al Post -
Pre Re Development TP Load
Ilb/vrl
4.34
0.25
Development TP
Load
0.64
llb/Prl
ftrul Pon 0.tiaopmsT
TPtosd Pa _,c
�/rc4'rrl
L17
Pro FLDo, p prrrmf TP Iaad Per rc z:
{14'x r�r'rl
0.6i
--
Base lint•TP Lwd Ilb)•4
•,SIAl ID(7auSitT aPPhos to Pro redr,ebPrticriTars Cr u]'µ
�.
pr it . L+n9 Prow:Ntor nswi mpavau; s vrl
'Add usedlwdCovv.&u n q:
Pre Rehvelrpaxnt End coxvmirus pervisus randcwer(foreN%+en sir¢ ar
managed turf) wnwe w pmpPawdfarnew inperviam cover.
Ad)iisted told areogeis caraistea[ worth Post -Belk seJcpmdrt arm¢ (mvius
areageaJnewin>¢rvaus crier)
Colunsn 1 'boars kod refuct6n rerpnevnent for newimpervxess ewer(bosed on
rrwdesrlagrxn[ imdlirnit, a4I llrt/oae/ymr).
Pmt4bPapesehnp rt
For Svopen spare
Cove {aeresl
OAO
Weighted RAfarestl
0110
% Forest
0%
Managed Turf Cover
laves{
032
Weighted Rv{turf)
010
%Mmra+ed Turf
8111%
fieDevAnpervious
Cove lave l
01i5
Rvlinperviotrsl
PISS
%.lrrperviaus
14%
ToW PA!Dev. Site Area
{acres}
0.37
ReDev Site Rv 030
-
TreetmentVolunieand Nutrient Load
Port le Deve lopme rt
,
Treatment Volume
OA093
lacre-FLI
Port-IkOeveluprnert
TreehnentVakrrre
40S
lcsbic feet)
Port- W Oevelopmert
LoadlTPI
0-E
uawr
PS T kbwb lopn nor rp
lard pttauc
afi9
M4 Reduction Rewred
I Below Pre
10%
RCWreloprnern Laadl
Lord Ewer Sunanary-Post
Port Deteiolament New Impervious
New -rx -. _in L_c
{avesl 0.18
Wlinpevrousl OSS
Post Development
TreatmentVdune 0A143
lane ftl
post-Developrrrert
TmahseWVallune 621
{m6icfeetj
Port Dew lopment TP 039
Load IWyrl
TP Load Red uct ion TP Load Reduction
Req uired for Require[ for New
Redeveloped Area 0,03 Impervious Area 0'
32
pb1 yr I 0 b/p rl
rYlr
PROJECT WAHS Modular Classroom
DESIGNER. A '.'_-a-
---
CHECKED:
DATE 5v7rMll
UNITS E43LISH
C
gag
Inlets
Only
�
r
i
x
Y
_
_
104
DI-1
2400
QI80
0,80
0144
13adLt
O.OWR[(iFII'
0.144
4
Q576
0
EackU
0
4
0
0
Almad.Rt
0576
00100
20o0
45-6
1465
'Rr_•irFLnv
LD-229
STORM SEWER DESIGN COMPUTATIONS
STORM FREQUENCY 10
PROJECT: WAHS Modular Classrooms
LOCATION: Crozet
COUNTY: Free Union
NDAA STATION:
Des ign d by: A. rwlabee
Checked by:
UNITS ENCpLI5H
PIPE
NO.
FROM POINT
TO POINT
DILkI _
3RE_A
A'
Acre
3
RUNOFF
COEFF.
'C'
4
CA
TOTAL
INLET
TIME
Minute;
RJk1N
FALL
InHr
r8
RUNOFF INN17IRT ELEVATION
ENGT B
of Pip=
Ft
12
SLOPE
Ft_Ft
1
SIZE
(D'aOr
Span.Rise)
In
14
SHAPE
Ninber
of Pip-s
Capacity
CFS
IS
Fric[im
Slope
FLFt
NORMAL
FLOW
TIME
Sec
1(111)
RENE ARKS
\[El`'I
5
LATER
Lateral
CFS
ToWQ
CF'S
s')
UPPER
END
14
LONER.
END
11
Depthof
Flaw. do
FL
Areacf
Flow. Ar.
SgFt
Hir
Ft
tr.
F[.Sm
'1
Er
Ft
REFERENCE
1
ST .L
REFERENCE
Sr k'
101
102
10D
000
0.00
4-14
123
5.82
0.00
1.56
68432
RI-06
130.20
Q02504
12
Ctrcubf
1
611
0-0017-0
034
0.14
019
650
1.00
20.01
103
1104
1102
1 GIB
I 0.84
I 0.14
OA4
5-20
5.83
0-00
156
685.82
685.60
1 10.91
IQO2DIP5I
L
':ifcotf
1 1
1 5-48
10.001701
037
016
02D
6.01
093
I L91
`LEVEL SPREADER TIMBER LENGTH
(L) CALCULATIONS
DRAINAGE AREAS FROM SHEET C6.0
LEVEL SPREADER - ROOF DRAINAGE
PER VIRGINIA DEQ STORMWATER
DESIGN SPECIFICATION No. 2:
L = 40 LF FOR FLOW TO WOODED
AREA x Q(1 INCH) CFS INFLOW
(1 INCH STORM EVENT USED)
L = 40 LF X 0.27 CFS = 10.8'='13'
`MINIMMUM LEVEL SPREADER
LENGTH = 13'
AS NOTED ON PLAN
PIPE OUTFALL
VDOT STD. No. 1
BROWN STONE, 2"4' IN
SIZE
FILTER FABRIC
FULL LENGTH 6"X6"
TOP TIMBERWOOD
(TYP.)
F
MIN. T BACK INTO
GRADE. BOTTOM
TIMBER TO BE FULL
LENGTH
LEVEL SPREADER DETAIL
No Scale
6" MIN.
(2) 6"X6" WOOD TIMBER -
18" LONG #4 EPDXY
COATED REBAR
LEVEL WITH
EXISTING OR
PROPOSED
GRADE
MAINTENANCE NOTE: INSPECTIONS SHALL TAKE PLACE ANNUALLY,
IDEALLY DURING THE NON -GROWING SEASON. SEDIMENTS SHOULD BE
CLEANED OUT OF THE LEVEL SPREADER FOREBAYS AND FLOW
SPUTTERS.
PIPE OUTFALL
18" LONG #4 EPDXY
COATED REBAR (TYP.)
OT STD. No. 1
OWN STONE RIP
P. 2"-4" IN SIZE
MODIFIED CN METHOD
(per DEQ2013draft SWMhandbooksection11.5.3)
RAINFALL INCHES -P= 1 INCH
from TR-55 table 4-11
Runoff Coefficients(Rv)
Hydrologic
Sall Type
A
B
C
D
Forest/Open Space
0.02
0.03
0.04
0.05
Managed Turf
0.15
0.20
0.22
1 0.25
Impervious Cover
0.95
0.95
0.95
0.95
DRAINAGE AREA AND
IN LET LABEL
IMPERVIOUS
AREA(AC)
Soil Type
MANAGEDTURF
AREA (AC)
MANAGED
TURF RV
FOREST/OPEN
SPACE(AC)
FOREST/OPEN
RV
TOTAL
AREA (AC
RV
Tv-1"
VOLUME (CF)
Qa-RUNOFFVOL.
(WATERSHED
MODIFIED
ON
la INITIAL
ABSTRACFION
la/P
Tc
(hours)
qi - UNIT PEAK
DISCHARGE(csm/in)
gpTV-1"Treatment
Volume Peak Discharge
Western
0.18
B
0
0.2
0
0.03
0.18
0.95
621
0.950
99.57
0.009
0.009
0.10
1000
0.27
RATIONAL METHOD
lYRRAINFALL INTENSITY=
2YR RAINFALL INTENSITY=
10YR RAINFALL INTENSITY=
4.22
5.04
6.64
IN/HR
IN/HR
IN/HR
LEVEL SPREADER
1"
WEIR
1YR
COMPUTATIONS
2YR
lOYR
Runoff Coefficients IC)
Hydrologic
Soil Type
A
B
C
D
Forest/Open Space
0.20
0.20
0.20
0.20
Q(CFS)
WEIR LENGTH
WEIR COEFF
FLOW DEPTH -FT
DEPTH INCHES
0.27
13
3.33
0.03
0.41
0.68
13
3.33
0.06
0.76
0.82
13
3.33
0.07
0.85
1.08
13
3.33
0.09
L02
Managed Turf
0.30
0.30
0.30
0.30
Impervious Cover
0.90
0.90
0.90
0.90
DRAINAGE AREA AND
INLET LABEL
IMPERVIOUS
AREA (AC)
Sol I Type
MANAGEDTURF
AREA (AC)
MANAGED
TURF RV
FOREST/OPEN
SPACE (AC)
FOREST/OPEN
RV
TOTAL
AREA (AC)
Average
C val ue
01yrFlow
(CFS)
Q2yrFlow
(CFS)
Q10yrAow
(CFS)
Western
0.18
B
0
0.3
0
0.03
0.18
0.90
0.68
0.82
1.08
" uN.%TK•%NN.SH0W..kLT1R v
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DATE
0511012021
DRAWN BY
YT
DESIGNED BY
AM
CHECKED BY
JS
SCALE
AS SHOWN
U)
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J0
1
I-1
1 Q
J J
'I 0
Lf
1013 NO.
694.0
SHEET NO.
C6.1
L