HomeMy WebLinkAboutWPO201500053 Plan - VSMP 2015-09-11THOMAS I I FF I RSON F
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SHEET NO. DRAWING NO. TITLE
1 OF 6 C-1 COVER SHEET
2 OF 6 C-2 SHEET INDEX
3 OF 6 C-3 EROSION AND SEDIMENT CONTROL NARRATIVE
4 OF 6 C-4 NEW MONTALTO WATER STORAGE TANK EROSION AND SEDIMENT CONTROL PLAN
5 OF 6 C-5 EROSION AND SEDIMENT CONTROL DETAILS
6 OF 6 C-6 CALCULATIONS AND PROFILES
VSMP rDLAT\\]
� 1 VIRGINIAl
a . $ �', I �'
VICINITY MAP
SCALE: 1 "=2000'
1. THESE DRAWINGS PRESENT STORMWATER AND EROSION AND SEDIMENT CONTROL PLANS FOR VSMP REQUIREMENTS
FOR THE WATER AND WASTEWATER IMPROVEMENTS PART II PROJECT FOR THE THOMAS JEFFERSON FOUNDATION
FACILITIES.
2. COORDINATE WORK ASSOCIATED WITH THIS PLAN WITH THE PLANS ENTITLED "THOMAS JEFFERSON FOUNDATION,
WATER AND WASTEWATER IMPROVEMENTS PART I, ALBEMARLE COUNTY VIRGINIA" AND "THOMAS JEFFERSON
FOUNDATION, WATER AND WASTEWATER IMPROVEMENTS PART II, ALBEMARLE COUNTY VIRGINIA"
SITE DATA
NAME: THOMAS JEFFERSON FOUNDATION, INC
CONTACT: KEN MITCHELL
ASSISTANT VICE PRESIDENT OF FACILITIES
ADDRESS: P.O. BOX 316
CHARLOTTESVILLE, VA 22902
ENGINEER INFORMATION:
NAME: WW ASSOCIATES, INC.
CONTACT: HERBERT F. WHITE, III, P.E.
ADDRESS: 3040 AVEMORE SQUARE PLACE
CHARLOTTESVILLE, VA 22911
TELEPHONE: (434) 984-2700
FAX: (434) 978-1444
E-MAIL: HWH ITEOWWASSOCIATES. N ET
TOWN, STATE: ALBEMARLE COUNTY, VA
TAX MAP REFERENCES: 77-31, 78-22, 78-23, 78-25 AND 92-1
SETBACK & YARD REQUIREMENTS:
PARCELS 77-31, 78-22, 78-23, 78-25
STRUCTURES TO BE A MINIMUM OF 30 FEET FROM PUBLIC RIGHT-OF-WAYS.
STRUCTURES TO BE A MINIMUM OF 50 FEET FROM RESIDENTIAL AND RURAL AREA
DISTRICTS.
CONSTRUCTION ACTIVITY INCLUDING CLEARING AND GRADING TO BE A MINIMUM OF
20 FEET FROM RESIDENTIAL AND RURAL AREA DISTRICTS.
PARCELS:
TMP 77-31
TMP 78-22
TMP 78-:.3
TMP 78-25
TMP 92-!
UTILITY CONTACTS
TELEPHONE: CENTU RYLI N K
ATTN: USIC LOCATING SERVICE
CONTACT: 1-800-778-9140
NO CONFLICTS; PUBLIC UTILITIES ARE OUTSIDE OF STATED WORK AREA.
ELECTRICITY: DOMINION VIRGINIA POWER
ATTN: DEAN RASMUSSEN
CONTACT: 1-804-608-5446
NO CONFLICTS; PUBLIC UTILITIES ARE OUTSIDE OF STATED WORK AREA.
CABLE: COMCAST
ATTN: DEAN RASMUSSEN
CONTACT: 1-804-608-5446
NO CONFLICTS; PUBLIC UTILITIES ARE OUTSIDE OF STATED WORK AREA.
1 ADDRESSED COUNTY COMMENTS RU 8-2'1-15 DESIGNED BY:
r
sAR
ENGINEERS DRAWN BY:
SURVEYORS KM
E PLANNERS
c. No. 122
AsSOCIATES DIHR BYHFW
�
�o, $ _Z1.tS {W
, PO Box 4119 3040 Alit—il e Square 1 WWA NUMBER:
�'� Lynchburg, VA 24502 Charlontesvilte, VA 22911
l�Phone: 434.316.6080 Phoney 434.984.2700
www.wwassocixtes.nel 215015.02B
NO. SHEET REVISION BY DATE NO. SHEET REVISION BY DATE sr #+" IS
I I I
APPROVED
by the A"lemerle County
Commumly Deve!opment DoWment
D;+e
He _Po ZoiSobos
PROJECT:
THOMAS JEFFERSON FOUNDATION
WATER AND WASTEWATER IMPROVEMENTS PART it
ALBEMARLE COUNTY, VIRGINIA
TITLE:
COVER SHEET
FILE NAME: DISCIPLINE: SCALE: DATE:
501502B_CS-1 _VSMP.dw IWiL H: AS SHOWN
V. N/A 08/05/ 15
SET REV. NO.
1
DRAWING NUMBER:
C-1
SHEET NUMBER:
1 Of 6
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\ j I: : Y ( \ o� -1\ - _ _ ) �o /� / o / / \ ;'' I I � I I \ � \ I 1 \ i I I ( I I ” \°o \ I l h1 I I I 1 1 \ �\ \ o \ \ \ \ oma\ \ . , °� ,\ \ \ \ \ o \ \ `so \ 0, \ so \ �\ \ \ \ \ \ \ \ \\ \ \ \ \ \\\' \ \ \ \ 1 I I 1 1 1 I I I / ( \ - \ \ 1 \ FROM ALBEMARLE COUNTY GIS DATED 2013.
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DESIGNED BY: PROJECT:
3 �x of �r SAR THOMAS JEFFERSON FOUNDATION SET REV. NO.
a �„
�� IF THIS DRAWING IS A REDUCTION ENGIINEERS DRAWN BY: WATER AND WASTEWATER IMPROVEMENTS PART 11 1
� GRAPHIC SCALE MUST BE USED SURVIEYORS KTM ALBEMARLE COUNTY, VIRGINIA DRAWING NUMBER:
o � PLAI\1NERS TITLE:
,� �. No. 122 SCALE: 1" = 300' °IHR eY: SHEET INDEX C-2
�o <g _ Z I- I .- ww ASSOCIATES HFW
•� PO Box 4119 3040 AvetnolTe Square PI. SHEET NUMBER:
� �'s Csti Lynchburg, VA 24502 Charbtte i,he,VA22911 WWA NUMBER: FILE NAME: DISCIPLINE: SCALE: 2 DATE:
`�J'ONAL F'� , Phone: 434.316.6080 Phone: 4341.9842700 rvrL H: 1 „ = 300'
NO. SHEET REVISION BY DATE No. SHEET REVISION BY DATE ppb® _ 300 0 300 waw.w'was,octa,esnet 215015.028 5015028 OV-1_VSMP.dw V: N/A 08/05/15 2 Of 6
EROSION & SEDIMENT CONTROL NARRATIVE
I. PROJECT DESCRIPTION
THE PURPOSE OF THIS PLAN IS TO SHOW THE REQUIRED EROSION AND SEDIMENT CONTROL MEASURES
FOR FOUR SEPARATE SITES LOCATED WITHIN THE PROPERTIES OF THE THOMAS JEFFERSON FOUNDATION IN
ALBEMARLE COUNTY, VIRGINIA. THE SITES ARE DESCRIBED AS THE MONTALTO WATER STORAGE TANK, WATER
BOOSTER PUMP STATION 'A', WATER BOOSTER PUMP STATION 'B', AND MAIN WASTEWATER PUMP STATION.
THE IMPROVEMENTS ASSOCIATED WITH THESE SITES ARE BEING CONSTRUCTED AS PART OF THE MONTICELLO
WATER AND WASTEWATER IMPROVEMENTS - PART II.
MONTALTO WATER STORAGE TANK
THE PURPOSE OF THIS PROJECT IS FOR THE CONSTRUCTION OF A NEW CONCRETE UNDERGROUND WATER
STORAGE TANK AND ITS ASSOCIATED ACCESS ROAD AT MONTALTO IN ALBEMARLE COUNTY, VIRGINIA. THE
TOTAL AREA OF DISTURBANCE FOR THIS PROJECT IS 1.33 ACRES.
II. EXISTING SITE CONDITIONS
MONTALTO WATER STORAGE TANK
THE SITE IS LOCATED WITHIN THE PROPERTY OF MONTALTO AND THE THOMAS JEFFERSON FOUNDATION. THE
SITE IS PRIMARILY A GRASSED FIELD WITH A WOODED PERIMETER.
III. ADJACENT PROPERTIES
MONTALTO WATER STORAGE TANK
THE SITE IS LOCATED WITHIN THE PROPERTY OF MONTALTO AND THE THOMAS JEFFERSON FOUNDATION. IT IS
BOUNDED BY MONTALTO LOOP ROAD AND DISTANTLY TO THE NORTHEAST BY PROPERTIES OWNED BY THE
THOMAS JEFFERSON MEMORIAL FOUNDATION AND THE MICHIE TAVERN CORPORATION.
VII. CRITICAL AREAS
CARE SHALL BE TAKEN TO STABILIZE ALL SLOPES AND PREVENT EROSION, TO MINIMIZE THE TRANSPORT OF
SEDIMENT ONTO THE INTERNAL ROADWAYS SERVING MONTICELLO AND MONTALTO, AND TO PREVENT SEDIMENT
FROM BEING DISCHARGED INTO THE DOWNSTREAM WATER COURSES
VIII. STORMWATER MANAGEMENT CONSIDERATIONS
STORMWATER MANAGEMENT IS NOT REQUIRED FOR WATER BOOSTER PUMP STATION "A", WATER BOOSTER PUMP
STATION "B", OR THE MAIN WASTEWATER PUMP STATION AS THE PROJECT SITES DISTURB LESS THAN 10,000
SQ.FT. EACH.
A STORMWATER MANAGEMENT PLAN FOR THE MONTALTO TANK SITE IS NOT REQUIRED BASED) ON ALBEMARLE
COUNTY INPUT. A STORMWATER MANAGEMENT AGREEMENT WILL BE REQUIRED TO BE SUBMITTED BY THE
CONTRACTOR PRIOR TO THE START OF THE PROJECT.
IX. OFF-SITE ACTIVITIES
NO OFF-SITE ACTIVITIES ARE ANTICIPATED WITH THIS PROJECT.
X. EROSION AND SEDIMENT CONTROL MEASURES
ALL VEGETATIVE AND STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES SHALL BE CONSTRUCTED AND
MAINTAINED BY THE CONTRACTOR IN ACCORDANCE WITH THE LATEST EDITION OF THE VIRGINIA EROSION AND
SEDIMENT CONTROL HANDBOOK. SYMBOLS, DETAILS, AND DIMENSIONS USED ARE TAKEN FROM THE HANDBOOK, AS
WELL AS THE VIRGINIA DEPARTMENT OF TRANSPORTATION'S ROAD AND BRIDGE STANDARDS, VOLUME I, 2008.
A. STRUCTURAL PRACTICES
1. TEMPORARY CONSTRUCTION ENTRANCE (CE), 3.02: TEMPORARY CONSTRUCTION ENTRANCES SHALL BE IN
ACCORDANCE WITH ALBEMARLE COUNTY REQUIREMENTS. A MINIMUM WATER TAP OF 1" MUST BE INSTALLED WITH A
MINIMUM 1" BALLCOCK SHUTOFF VALVE SUPPLYING A WASH HOSE WITH A DIAMETER OF 1.5" FOR ADEQUATE
CONSTANT PRESSURE OR IN LIEU OF A WATER TAP, EACH CONSTRUCTION ENTRANCE SHALL HAVE A WATER TRUCK
WITH 2 PRESSURE WASHERS AT ALL TIMES. WASH WATER MUST BE CARRIED AWAY FROM THE ENTRANCE TO AN
APPROVED SETTLING AREA TO REMOVE SEDIMENT. ALL SEDIMENT SHALL BE PREVENTED FROM ENTERING STORM
DRAINS, DITCHES OR WATERCOURSES.
2. SILT FENCE (SF), 3.05: SILT FENCE BARRIERS SHALL BE INSTALLED DOWN SLOPE OF AREAS WITH MINIMAL GRADES
TO FILTER RUNOFF FROM SHEET FLOW AS INDICATED ON THE SITE PLAN.
3. STORM DRAIN INLET PROTECTION (IP), 3.07; CULVERT INLET PROTECTION (CIP), 3.08: STORM DRAIN INLET
PROTECTION AND CULVERT INLET PROTECTION SHALL BE PROVIDED AS SHOWN ON THE PLANS TO MINIMIZE
SEDIMENT DEPOSITION INSIDE STORM DRAIN PIPES.
4. STORMWATER CONVEYANCE CHANNELS (SCC), 3.17: CONSTRUCT STORMWATER CONVEYANCE CHANNELS TO COLLECT
AND CONVEY STORMWATER TO A STABLE OUTLET.
5. OUTLET PROTECTION (OP), 3.18: INSTALL AT THE OUTFALL OF THE STORM PIPE AS SHOWN ON PLANS TO
PREVENT SCOUR AND MINIMIZE DOWNSTREAM EROSION.
6. SOIL STABILIZATION BLANKETS & MATTING (B/M), 3.36: INSTALL AS SHOWN ON PLAN TO RESIST EROSION AND
PROMOTE THE ESTABLISHMENT OF YOUNG VEGETATION IN CHANNELIZED AREAS.
7. DUST CONTROL (DC), 3.39: PROVIDE DUST CONTROL AS SHOWN ON PLANS TO HELP REDUCE THE PRESENCE OF
AIRBORNE SUBSTANCES DURING LAND DISTURBING ACTIVITIES.
B. VEGETATIVE PRACTICES
1. TOP SOILING & STOCKPILING (TO), 3.30: TOPSOIL WILL BE STRIPPED FROM AREAS TO BE GRADED AND STOCKPILED
FOR LATER USE. STOCKPILES ARE TO BE STABILIZED WITH TEMPORARY VEGETATION AND HAVE SILT FENCE INSTALLED
ALONG THE LOWER PERIMETER. STOCKPILES SHALL BE LOCATED AS SHOWN ON THE PLANS.
2. REFER TO "ALBEMARLE COUNTY GENERAL CONSTRUCTION NOTES FOR EROSION AND SEDIMENT CONTROL PLANS"
#17 AND #18 AND TO TEMPORARY & PERMANENT SEEDING SCHEDULES ON DWG ESC -6 FOR ADDITIONAL
INFORMATION.
C. MINIMUM STANDARDS
MS -1. STABILIZATION OF DENUDED AREAS:
PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS WITHIN 7 DAYS AFTER F$AL
GRADE IS REACHED ON ANY PORTION OF THE SITE. TEMPORARY SOIL STABILIZATION SHALL BE APPLIED WITHIN 7 DAYS
TO DENUDED AREAS THAT MAY NOT BE AT FINAL GRADE, BUT WILL REMAIN DORMANT OR UNDISTURBED 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. STABILIZATION OF SOIL STOCKPILES:
DURING CONSTRUCTION OF THE PROJECT, SOIL STOCKPILES AND BORROW AREAS SHALL BE STABILIZED OR PROTECTED
WITH SEDIMENT TRAPPING MEASURES. THE APPLICANT IS RESPONSIBLE FOR TEMPORARY PROTECTION AND PERMANENT
STABILIZATION OF ALL STOCKPILES ON SITE AS WELL AS BORROW AREAS AND SOIL INTENTIONALLY' TRANSPORTED FROM
THE PROJECT SITE.
MS -3. PERMANENT VEGETATIVE COVER:
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, IN THE OPINION OF THE E&S INSPECTOR, IS UNIFORM AND MATURE ENOUGH TO SURVIVE AND INHIBIT EROSION.
MS -4. TIMING AND STABILIZATION OF SILT TRAPPING MEASURES:
SEDIMENT BASINS AND TRAPS, STORM INLET PROTECTION, SILT FENCING, 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 OF EARTHEN STRUCTURES:
STABILIZATION MEASURES SHALL BE APPLIED TO EARTHEN STRUCTURES SUCH AS DAMS, DIKES AND DIVERSIONS
IMMEDIATELY AFTER INSTALLATION.
MS -6. SEDIMENT BASINS AND TRAPS:
SEDIMENT TRAPS & BASINS SHALL BE CONSTRUCTED BASED UPON THE TOTAL DRAINAGE AREA TO BE SERVED.
A. THE MINIMUM CAPACITY OF A SEDIMENT TRAP SHALL BE 134 -CUBIC YARDS PER ACRE OF DRAINAGE AREA, AND
SHALL CONTROL A DRAINAGE AREA OF LESS THAN 3 -ACRES.
B. THE MINIMUM CAPACITY OF A SEDIMENT BASIN SHALL BE 134 -CUBIC YARDS PER ACRE OF DRAINAGE AREA, AND
SHALL CONTROL A DRAINAGE AREA OF 3 -ACRES OR GREATER.
MS -7. CUT AND FILL SLOPES:
CUT AND FILL SLOPES SHALL BE 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 DOWN CUT OR FILL SLOPES:
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. WATER SEEPAGE FROM A SLOPE FACE:
WHENEVER WATER SEEPS FROM A SLOPE FACE, ADEQUATE DRAINAGE OR OTHER PROTECTION SHALL BE PROVIDED.
MS -10. STORM SEWER INLET PROTECTION:
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.
SHEET REVISION
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MS -11. STABILIZATION OF OUTLETS:
BEFORE NEWLY CONSTRUCTED STORM WATER 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. WORK IN LIVE WATERCOURSES:
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. CROSSING A LIVE WATERCOURSE:
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 MATERIALS SHALL BE PROVIDED.
MS -14. APPLICABLE REGULATIONS:
ALL APPLICABLE FEDERAL, STATE AND LOCAL REGULATIONS PERTAINING TO WORKING IN OR CROSSING LIVE
WATERCOURSES SHALL BE MET.
MS -15. STABILIZATION OF BED AND BANKS: N/A
THE BED AND BANKS OF A WATERCOURSE SHALL BE STABILIZED IMMEDIATELY AFTER WORK IIN THE WATERCOURSE IS
COMPLETED.
MS -16. UNDERGROUND UTILITIES:
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. WHERE CONSISTENT WITH SAFETY AND SPACE CONSIDERATIONS, EXCAVATED MATERIAL IS TO BE PLACED ON THE
UPHILL SIDE OF TRENCHES, EXCEPT FOR ANY DIVERSION DITCHES.
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 OFFSITE PROPERTY.
D. TRENCH BACKFILL MATERIAL SHALL BE PROPERLY COMPACTED IN ORDER TO MINIMIZE EROSION AND PROMOTE
STABILIZATION.
E. RESTABILIZATION SHALL BE ACCOMPLISHED IN ACCORDANCE WITH THESE REGULATIONS.
F. ALL APPLICABLE SAFETY REGULATIONS SHALL BE COMPLIED WITH AT ALL TIMES.
MS -17. CONSTRUCTION ACCESS ROUTES:
WHERE CONSTRUCTION VEHICLE ACCESS ROUTES INTERSECT PAVED OR PUBLIC ROADS, PROVIISIONS 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, THE ROAD SURFACE SHALL BE CLEANED THOROUGHLY AT THE END OF
EACH DAY. SEDIMENT SHALL BE REMOVED BY SHOVELING OR SWEEPING AND TRANSPORTED TO A SEDIMENT DISPOSAL
AREA. STREET WASHING SHALL BE ALLOWED ONLY AFTER SEDIMENT IS REMOVED IN THIS MAMNER. THIS PROVISION
SHALL APPLY TO INDIVIDUAL DEVELOPMENT LOTS AS WELL AS TO LARGER LAND -DISTURBING ACTIVITIES.
MS -18. TEMPORARY E&S CONTROL MEASURE REMOVAL:
ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS AFTER FINAL SITE
STABILIZATION OR AFTER TEMPORARY MEASURES ARE NO LONGER NEEDED, UNLESS OTHERWISE AUTHORIZED BY THE
LOCAL E&S 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. ADEQUACY OF RECEIVING CHANNELS:
PROPERTIES AND WATERWAYS DOWNSTREAM FROM THE DEVELOPMENT SITE SHALL BE PROTECTED FROM SEDIMENT
DEPOSITION, EROSION AND DAMAGE DUE TO INCREASES IN VOLUME, VELOCITY AND PEAK FLOW RATES OF STORM WATER
RUNOFF FOR THE STATED FREQUENCY STORM OF 24-HOUR DURATION.
D. MAINTENANCE:
ALL EROSION AND SEDIMENT CONTROL STRUCTURES AND SYSTEMS SHALL BE MAINTAINED, INSPECTED, AND REPAIRED
AS NEEDED TO INSURE CONTINUED PERFORMANCE OF THEIR INTENDED FUNCTION. ALL EROSION AND SEDIMENT
CONTROL MEASURES SHALL BE CHECKED AT THE END OF EACH DAY AND AFTER EVERY RAINFALL EVENT.
1. DAMAGE TO EROSION CONTROL MEASURES CAUSED BY CONSTRUCTION TRAFFIC OR OTHER ACTIVITY SHALL BE
REPAIRED BEFORE THE END OF EACH WORKING DAY.
2. MAINTAIN ALL SEEDED AREAS UNTIL A UNIFORM STAND IS ACCEPTED.
3. CONSTRUCTION ENTRANCE (3.02): PROVIDE FOR EQUIPMENT WASHING AS NEEDED TO PREVENT THE TRANSPORT OF
SOIL ONTO EXISTING ASPHALT ROADWAYS. ANY SEDIMENT ON THE PAVEMENT SHALL BE REMOVED IMMEDIATELY.
4. SILT FENCE (3.05): SILT FENCE BARRIERS WILL BE CHECKED DAILY FOR UNDERMINING OR DETERIORATION OF THE
FABRIC. SEDIMENT SHALL BE REMOVED WHEN THE LEVEL REACHES HALF WAY TO THE TOP OF THE BARRIER.
5. STORMDRAIN INLET PROTECTION (3.07); CULVERT INLET PROTECTION, 3.08: SHALL BE INSPECTED AFTER EACH RAIN
AND REPAIRS MADE AS NEEDED.
6. STORMWATER CONVEYANCE CHANNELS (3.17): THE MEASURE SHALL BE CHECKED PERIODICALLY TO ENSURE THAT
SCOUR IS NOT OCCURRING. SEDIMENT DEPOSITED IN THE CHANNELS SHALL BE REMOVED PRIOR TO THE REMOVAL
OF THE TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES, AND DURING CONSTRUCTION WHEN THE
CAPACITY OF THE CHANNELS IS REDUCED.
10. OUTLET PROTECTION (3.18): INSPECT AFTER RAINFALL EVENTS TO CHECK FOR SCOUR. MAKE REPAIRS AS
NECESSARY.
11. SEEDING (3.31/ 3.32): AREAS WHICH FAIL TO ESTABLISH VEGETATIVE COVER ADEQUATE TO PREVENT RILL EROSION
WILL BE RESEEDED AS SOON AS SUCH AREAS ARE IDENTIFIED.
12. SOIL STABILIZATION BLANKETS & MATTING (3.36): THE MEASURE SHALL BE PERIODICALLY CHECKED FOR
UNDERMINING AND TO ENSURE THAT IT IS SECURE AND FUNCTIONING AS INTENDED.
13. DUST CONTROL (3.39): PROVIDE DUST CONTROL IN AREAS SUBJECT TO SURFACE AND AIR MOVEMENT OF DUST
WHERE ON-SfTE AND OFF-SITE DAMAGE IS LIKELY TO OCCUR IF PREVENTIVE MEASURES ARE NOT TAKEN.
ENGINEERS
y SURVEYORS
PLANNERS
ASSOCIATES
PO Box 4119 3040 Avemotre Square PI.
Lynchburg, VA 24502 CharlanesviM,, VA 22911
Phone: 434.316.6030 Phone: 4344.984.2700
www.wwassoctates net
ALBEMARLE COUNTY GENERAL CONSTRUCTION NOTES FOR EROSION AND SEDIMENT CONTROL PLANS
1. THE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO THE PRE -CONSTRUCTION
CONFERENCE, ONE WEEK PRIOR TO THE COMMENCEMENT OF LAND DISTURBING ACTIVITY, AND ONE WEEK
PRIOR TO THE FINAL INSPECTION.
2. ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CONSTRUCTED AND MAINTAINED ACCORDING TO
MINIMUM STANDARDS AND SPECIFICATION OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK
AND VIRGINIA REGULATIONS VR 625-02-00 EROSION AND CONTROL SEDIMENT REGULATIONS.
3. ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR AS THE FIRST STEP
IN CLEARING.
4. A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE MAINTAINED ON THE SITE
AT ALL TIMES.
5. PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON THESE PLANS
(INCLUDING, BUT NOT LIMITED TO, OFF-SITE BORROW OR WASTE AREAS), THE CONTRACTOR SHALL
SUBMIT A SUPPLEMENTARY EROSION CONTROL PLAN TO THE OWNER FOR REVIEW AND APPROVAL BY THE
PLAN APPROVING AUTHORITY.
6. THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION CONTROL MEASURES
NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS DETERMINED BY THE PLAN APPROVING
AUTHORITY.
7. ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL TIMES DURING
LAND DISTURBING ACTIVITIES AND DURING SITE DEVELOPMENT UNTIL FINAL STABILIZATION IS ACHIEVED.
8. DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED FILTERING DEVICE.
9. THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY AND AFTER EACH
RUNOFF -PRODUCING RAINFALL EVENT. ANY NECESSARY REPAIRS FOR 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 TO COMPLIANCE WITH SECTION 13-301 OR THE CODE OF
ALBEMARLE.
14. BORROW, FILL OR WASTE ACTIVITY INVOLVING INDUSTRIAL -TYPE POWER EQUIPMENT SHALL BE LIMITED TO
THE HOURS OF 7:OOA.M. TO 9:00 P.M.
15. BORROW, FILL OR WASTE ACTIVITY SHALL BE CONDUCTED IN A SAFE MANNER THAT MAINTAINS LATERAL
SUPPORT, IN ORDER TO MINIMIZE ANY HAZARD TO PERSONS, PHYSICAL DAMAGE TO ADJACENT LAND AND
IMPROVEMENTS, AND DAMAGE TO ANY PUBLIC STREET BECAUSE OF SLIDES, SINKING, OR COLLAPSE.
16. THE DEVELOPER SHALL RESERVE THE RIGHT TO INSTALL, MAINTAIN, REMOVE OR CONVERT TO PERMANENT
STORMWATER MANAGEMENT FACILITIES WHERE APPLICABLE ALL EROSION CONTROL MEASURES REQUIRED BY
THIS PLAN REGARDLESS OF THE SALE OF ANY LOT, UNIT, BUILDING OR OTHER PORTION OF THE
PROPERTY.
17. TEMPORARY STABILIZATION SHALL BE TEMPORARY SEEDING AND MULCHING. SEEDING IS TO BE AT 75
LBS/ACRE, AND IN THE MONTHS OF SEPTEMBER TO FEBRUARY TO CONSIST OF 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 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/1000SF. ALTERNATIVES ARE SUBJECT TO APPROVAL BY THE COUNTY
EROSION CONTROL INSPECTOR.
19. MAINTENANCE: ALL MEASURES ARE TO BE INSPECTED WEEKLY AND AFTER EACH RAINFALL. ANY DAMAGE
OR CLOGGING TO STRUCTURAL MEASURES IS TO BE REPAIRED IMMEDIATELY. SILT TRAPS ARE TO BE
CLEANED WHEN 50% OF THE WET STORAGE VOLUME IS FILLED WITH SEDIMENT. ALL SEEDED AREAS ARE
TO BE RESEEDED WHEN NECESSARY TO ACHIEVE A GOOD STAND OF GRASS. SILT FENCE AND DIVERSION
DYKES WHICH ARE COLLECTING SEDIMENT TO HALF THEIR HEIGHT MUST BE CLEANED AND REPAIRED
IMMEDIATELY.
20. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE REMOVED WITHIN 30 DAYS OF
FINAL SITE STABILIZATION, WHEN MEASURES ARE NO LONGER NEEDED, SUBJECT TO APPROVAL BY THE
COUNTY EROSION CONTROL INSPECTOR.
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
17-2076).
SEQUENCE OF CONSTRUCTION
1. CONTRACTOR TO SCHEDULE AND ATTEND A PRE -CONSTRUCTION MEETING WITH ALBEMARLE COUNTY AND
OBTAIN ALBEMARLE COUNTY LAND DISTURBANCE PERMIT PRIOR TO THE START OF ANY LAND DISTURBING/
CONSTRUCTION ACTIVITIES ASSOCIATED WITH THIS PLAN.
2. INSTALL PERIMETER CONTROLS AND INLET PROTECTIONS IN LOCATIONS SHOWN ON THE PLANS PRIOR TO
BEGINNING CONSTRUCTION.
3. PERFORM GRADING OPERATIONS TO BRING SITE TO SUBGRADE ELEVATIONS AND MAINTAIN POSITIVE
DRAINAGE TO SEDIMENT TRAPPING DEVICES. STABILIZE AREAS AS THEY ARE BROUGHT TO GRADE WITH
GRAVEL OR SEEDING.
4. CONSTRUCT STRUCTURES AND INSTALL UTILITIES
5. STABILIZE ALL REMAINING DISTURBED AREAS.
7. ALL EROSION AND SEDIMENT CONTROLS SHALL BE REMOVED WITHIN 30 DAYS OF FINAL SITE
STABILIZATION OR WHEN MEASURES ARE NO LONGER NEEDED. REMOVALS ARE SUBJECT TO APPROVAL BY
THE COUNTY EROSION CONTROL INSPECTOR.
8. CLOSE OUT THE PROJECT.
DESIGNED BY: PROJECT:
SAR THOMAS JEFFERSON FOUNDATION
DRAWN BY: WATER AND WASTEWATER IMPROVEMENTS PART l i
KW ALBEMARLE COUNTY, VIRGINIA
TITLE:
DIHR BY: EROSION AND SEDIMENT CONTROL NARRATIVE
HFW
WWA NUMBER: FILE NAME: DISCIPLINE: SCALE: DATE:
215015.02B 501502B_ESC-1_VSMP.d L H: NIA
V. NIA 08/05/15
SET REV. NO.
1
DRAWING NUMBER:
C-3
SHEET NUMBER:
3 of 6
N.
OFF-SITE AREAS
NO OFF-SITE AREAS ARE ANTICIPATED WITH THIS
PROJECT.
V.
SOILS
ACCORDING TO USDA NRCS SOIL MAPPING,
THE PROJECT SITES LIES ON THE SOIL TYPES
INDICATED BELOW: A DESCRIPTION OF THE
SOIL TYPES FOLLOWS:
MONTALTO WATER STORAGE TANK
MYERSVILLE SILT LOAM (58E)
25 TO 45 PERCENT SLOPES
WELL DRAINED, 40 TO 60 INCHES TO PARALITHIC BEDROCK
HYDROLOGIC SOIL GROUP: B
K FACTOR (WHOLE SOIL): 0.43
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REVISED LIMITS OF DISTURBED AREA FOR
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NO.
SHEET REVISION
BY
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VII. CRITICAL AREAS
CARE SHALL BE TAKEN TO STABILIZE ALL SLOPES AND PREVENT EROSION, TO MINIMIZE THE TRANSPORT OF
SEDIMENT ONTO THE INTERNAL ROADWAYS SERVING MONTICELLO AND MONTALTO, AND TO PREVENT SEDIMENT
FROM BEING DISCHARGED INTO THE DOWNSTREAM WATER COURSES
VIII. STORMWATER MANAGEMENT CONSIDERATIONS
STORMWATER MANAGEMENT IS NOT REQUIRED FOR WATER BOOSTER PUMP STATION "A", WATER BOOSTER PUMP
STATION "B", OR THE MAIN WASTEWATER PUMP STATION AS THE PROJECT SITES DISTURB LESS THAN 10,000
SQ.FT. EACH.
A STORMWATER MANAGEMENT PLAN FOR THE MONTALTO TANK SITE IS NOT REQUIRED BASED) ON ALBEMARLE
COUNTY INPUT. A STORMWATER MANAGEMENT AGREEMENT WILL BE REQUIRED TO BE SUBMITTED BY THE
CONTRACTOR PRIOR TO THE START OF THE PROJECT.
IX. OFF-SITE ACTIVITIES
NO OFF-SITE ACTIVITIES ARE ANTICIPATED WITH THIS PROJECT.
X. EROSION AND SEDIMENT CONTROL MEASURES
ALL VEGETATIVE AND STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES SHALL BE CONSTRUCTED AND
MAINTAINED BY THE CONTRACTOR IN ACCORDANCE WITH THE LATEST EDITION OF THE VIRGINIA EROSION AND
SEDIMENT CONTROL HANDBOOK. SYMBOLS, DETAILS, AND DIMENSIONS USED ARE TAKEN FROM THE HANDBOOK, AS
WELL AS THE VIRGINIA DEPARTMENT OF TRANSPORTATION'S ROAD AND BRIDGE STANDARDS, VOLUME I, 2008.
A. STRUCTURAL PRACTICES
1. TEMPORARY CONSTRUCTION ENTRANCE (CE), 3.02: TEMPORARY CONSTRUCTION ENTRANCES SHALL BE IN
ACCORDANCE WITH ALBEMARLE COUNTY REQUIREMENTS. A MINIMUM WATER TAP OF 1" MUST BE INSTALLED WITH A
MINIMUM 1" BALLCOCK SHUTOFF VALVE SUPPLYING A WASH HOSE WITH A DIAMETER OF 1.5" FOR ADEQUATE
CONSTANT PRESSURE OR IN LIEU OF A WATER TAP, EACH CONSTRUCTION ENTRANCE SHALL HAVE A WATER TRUCK
WITH 2 PRESSURE WASHERS AT ALL TIMES. WASH WATER MUST BE CARRIED AWAY FROM THE ENTRANCE TO AN
APPROVED SETTLING AREA TO REMOVE SEDIMENT. ALL SEDIMENT SHALL BE PREVENTED FROM ENTERING STORM
DRAINS, DITCHES OR WATERCOURSES.
2. SILT FENCE (SF), 3.05: SILT FENCE BARRIERS SHALL BE INSTALLED DOWN SLOPE OF AREAS WITH MINIMAL GRADES
TO FILTER RUNOFF FROM SHEET FLOW AS INDICATED ON THE SITE PLAN.
3. STORM DRAIN INLET PROTECTION (IP), 3.07; CULVERT INLET PROTECTION (CIP), 3.08: STORM DRAIN INLET
PROTECTION AND CULVERT INLET PROTECTION SHALL BE PROVIDED AS SHOWN ON THE PLANS TO MINIMIZE
SEDIMENT DEPOSITION INSIDE STORM DRAIN PIPES.
4. STORMWATER CONVEYANCE CHANNELS (SCC), 3.17: CONSTRUCT STORMWATER CONVEYANCE CHANNELS TO COLLECT
AND CONVEY STORMWATER TO A STABLE OUTLET.
5. OUTLET PROTECTION (OP), 3.18: INSTALL AT THE OUTFALL OF THE STORM PIPE AS SHOWN ON PLANS TO
PREVENT SCOUR AND MINIMIZE DOWNSTREAM EROSION.
6. SOIL STABILIZATION BLANKETS & MATTING (B/M), 3.36: INSTALL AS SHOWN ON PLAN TO RESIST EROSION AND
PROMOTE THE ESTABLISHMENT OF YOUNG VEGETATION IN CHANNELIZED AREAS.
7. DUST CONTROL (DC), 3.39: PROVIDE DUST CONTROL AS SHOWN ON PLANS TO HELP REDUCE THE PRESENCE OF
AIRBORNE SUBSTANCES DURING LAND DISTURBING ACTIVITIES.
B. VEGETATIVE PRACTICES
1. TOP SOILING & STOCKPILING (TO), 3.30: TOPSOIL WILL BE STRIPPED FROM AREAS TO BE GRADED AND STOCKPILED
FOR LATER USE. STOCKPILES ARE TO BE STABILIZED WITH TEMPORARY VEGETATION AND HAVE SILT FENCE INSTALLED
ALONG THE LOWER PERIMETER. STOCKPILES SHALL BE LOCATED AS SHOWN ON THE PLANS.
2. REFER TO "ALBEMARLE COUNTY GENERAL CONSTRUCTION NOTES FOR EROSION AND SEDIMENT CONTROL PLANS"
#17 AND #18 AND TO TEMPORARY & PERMANENT SEEDING SCHEDULES ON DWG ESC -6 FOR ADDITIONAL
INFORMATION.
C. MINIMUM STANDARDS
MS -1. STABILIZATION OF DENUDED AREAS:
PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS WITHIN 7 DAYS AFTER F$AL
GRADE IS REACHED ON ANY PORTION OF THE SITE. TEMPORARY SOIL STABILIZATION SHALL BE APPLIED WITHIN 7 DAYS
TO DENUDED AREAS THAT MAY NOT BE AT FINAL GRADE, BUT WILL REMAIN DORMANT OR UNDISTURBED 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. STABILIZATION OF SOIL STOCKPILES:
DURING CONSTRUCTION OF THE PROJECT, SOIL STOCKPILES AND BORROW AREAS SHALL BE STABILIZED OR PROTECTED
WITH SEDIMENT TRAPPING MEASURES. THE APPLICANT IS RESPONSIBLE FOR TEMPORARY PROTECTION AND PERMANENT
STABILIZATION OF ALL STOCKPILES ON SITE AS WELL AS BORROW AREAS AND SOIL INTENTIONALLY' TRANSPORTED FROM
THE PROJECT SITE.
MS -3. PERMANENT VEGETATIVE COVER:
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, IN THE OPINION OF THE E&S INSPECTOR, IS UNIFORM AND MATURE ENOUGH TO SURVIVE AND INHIBIT EROSION.
MS -4. TIMING AND STABILIZATION OF SILT TRAPPING MEASURES:
SEDIMENT BASINS AND TRAPS, STORM INLET PROTECTION, SILT FENCING, 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 OF EARTHEN STRUCTURES:
STABILIZATION MEASURES SHALL BE APPLIED TO EARTHEN STRUCTURES SUCH AS DAMS, DIKES AND DIVERSIONS
IMMEDIATELY AFTER INSTALLATION.
MS -6. SEDIMENT BASINS AND TRAPS:
SEDIMENT TRAPS & BASINS SHALL BE CONSTRUCTED BASED UPON THE TOTAL DRAINAGE AREA TO BE SERVED.
A. THE MINIMUM CAPACITY OF A SEDIMENT TRAP SHALL BE 134 -CUBIC YARDS PER ACRE OF DRAINAGE AREA, AND
SHALL CONTROL A DRAINAGE AREA OF LESS THAN 3 -ACRES.
B. THE MINIMUM CAPACITY OF A SEDIMENT BASIN SHALL BE 134 -CUBIC YARDS PER ACRE OF DRAINAGE AREA, AND
SHALL CONTROL A DRAINAGE AREA OF 3 -ACRES OR GREATER.
MS -7. CUT AND FILL SLOPES:
CUT AND FILL SLOPES SHALL BE 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 DOWN CUT OR FILL SLOPES:
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. WATER SEEPAGE FROM A SLOPE FACE:
WHENEVER WATER SEEPS FROM A SLOPE FACE, ADEQUATE DRAINAGE OR OTHER PROTECTION SHALL BE PROVIDED.
MS -10. STORM SEWER INLET PROTECTION:
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.
SHEET REVISION
- IMC. 1V 0. 11L3/`-
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MS -11. STABILIZATION OF OUTLETS:
BEFORE NEWLY CONSTRUCTED STORM WATER 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. WORK IN LIVE WATERCOURSES:
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. CROSSING A LIVE WATERCOURSE:
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 MATERIALS SHALL BE PROVIDED.
MS -14. APPLICABLE REGULATIONS:
ALL APPLICABLE FEDERAL, STATE AND LOCAL REGULATIONS PERTAINING TO WORKING IN OR CROSSING LIVE
WATERCOURSES SHALL BE MET.
MS -15. STABILIZATION OF BED AND BANKS: N/A
THE BED AND BANKS OF A WATERCOURSE SHALL BE STABILIZED IMMEDIATELY AFTER WORK IIN THE WATERCOURSE IS
COMPLETED.
MS -16. UNDERGROUND UTILITIES:
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. WHERE CONSISTENT WITH SAFETY AND SPACE CONSIDERATIONS, EXCAVATED MATERIAL IS TO BE PLACED ON THE
UPHILL SIDE OF TRENCHES, EXCEPT FOR ANY DIVERSION DITCHES.
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 OFFSITE PROPERTY.
D. TRENCH BACKFILL MATERIAL SHALL BE PROPERLY COMPACTED IN ORDER TO MINIMIZE EROSION AND PROMOTE
STABILIZATION.
E. RESTABILIZATION SHALL BE ACCOMPLISHED IN ACCORDANCE WITH THESE REGULATIONS.
F. ALL APPLICABLE SAFETY REGULATIONS SHALL BE COMPLIED WITH AT ALL TIMES.
MS -17. CONSTRUCTION ACCESS ROUTES:
WHERE CONSTRUCTION VEHICLE ACCESS ROUTES INTERSECT PAVED OR PUBLIC ROADS, PROVIISIONS 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, THE ROAD SURFACE SHALL BE CLEANED THOROUGHLY AT THE END OF
EACH DAY. SEDIMENT SHALL BE REMOVED BY SHOVELING OR SWEEPING AND TRANSPORTED TO A SEDIMENT DISPOSAL
AREA. STREET WASHING SHALL BE ALLOWED ONLY AFTER SEDIMENT IS REMOVED IN THIS MAMNER. THIS PROVISION
SHALL APPLY TO INDIVIDUAL DEVELOPMENT LOTS AS WELL AS TO LARGER LAND -DISTURBING ACTIVITIES.
MS -18. TEMPORARY E&S CONTROL MEASURE REMOVAL:
ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS AFTER FINAL SITE
STABILIZATION OR AFTER TEMPORARY MEASURES ARE NO LONGER NEEDED, UNLESS OTHERWISE AUTHORIZED BY THE
LOCAL E&S 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. ADEQUACY OF RECEIVING CHANNELS:
PROPERTIES AND WATERWAYS DOWNSTREAM FROM THE DEVELOPMENT SITE SHALL BE PROTECTED FROM SEDIMENT
DEPOSITION, EROSION AND DAMAGE DUE TO INCREASES IN VOLUME, VELOCITY AND PEAK FLOW RATES OF STORM WATER
RUNOFF FOR THE STATED FREQUENCY STORM OF 24-HOUR DURATION.
D. MAINTENANCE:
ALL EROSION AND SEDIMENT CONTROL STRUCTURES AND SYSTEMS SHALL BE MAINTAINED, INSPECTED, AND REPAIRED
AS NEEDED TO INSURE CONTINUED PERFORMANCE OF THEIR INTENDED FUNCTION. ALL EROSION AND SEDIMENT
CONTROL MEASURES SHALL BE CHECKED AT THE END OF EACH DAY AND AFTER EVERY RAINFALL EVENT.
1. DAMAGE TO EROSION CONTROL MEASURES CAUSED BY CONSTRUCTION TRAFFIC OR OTHER ACTIVITY SHALL BE
REPAIRED BEFORE THE END OF EACH WORKING DAY.
2. MAINTAIN ALL SEEDED AREAS UNTIL A UNIFORM STAND IS ACCEPTED.
3. CONSTRUCTION ENTRANCE (3.02): PROVIDE FOR EQUIPMENT WASHING AS NEEDED TO PREVENT THE TRANSPORT OF
SOIL ONTO EXISTING ASPHALT ROADWAYS. ANY SEDIMENT ON THE PAVEMENT SHALL BE REMOVED IMMEDIATELY.
4. SILT FENCE (3.05): SILT FENCE BARRIERS WILL BE CHECKED DAILY FOR UNDERMINING OR DETERIORATION OF THE
FABRIC. SEDIMENT SHALL BE REMOVED WHEN THE LEVEL REACHES HALF WAY TO THE TOP OF THE BARRIER.
5. STORMDRAIN INLET PROTECTION (3.07); CULVERT INLET PROTECTION, 3.08: SHALL BE INSPECTED AFTER EACH RAIN
AND REPAIRS MADE AS NEEDED.
6. STORMWATER CONVEYANCE CHANNELS (3.17): THE MEASURE SHALL BE CHECKED PERIODICALLY TO ENSURE THAT
SCOUR IS NOT OCCURRING. SEDIMENT DEPOSITED IN THE CHANNELS SHALL BE REMOVED PRIOR TO THE REMOVAL
OF THE TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES, AND DURING CONSTRUCTION WHEN THE
CAPACITY OF THE CHANNELS IS REDUCED.
10. OUTLET PROTECTION (3.18): INSPECT AFTER RAINFALL EVENTS TO CHECK FOR SCOUR. MAKE REPAIRS AS
NECESSARY.
11. SEEDING (3.31/ 3.32): AREAS WHICH FAIL TO ESTABLISH VEGETATIVE COVER ADEQUATE TO PREVENT RILL EROSION
WILL BE RESEEDED AS SOON AS SUCH AREAS ARE IDENTIFIED.
12. SOIL STABILIZATION BLANKETS & MATTING (3.36): THE MEASURE SHALL BE PERIODICALLY CHECKED FOR
UNDERMINING AND TO ENSURE THAT IT IS SECURE AND FUNCTIONING AS INTENDED.
13. DUST CONTROL (3.39): PROVIDE DUST CONTROL IN AREAS SUBJECT TO SURFACE AND AIR MOVEMENT OF DUST
WHERE ON-SfTE AND OFF-SITE DAMAGE IS LIKELY TO OCCUR IF PREVENTIVE MEASURES ARE NOT TAKEN.
ENGINEERS
y SURVEYORS
PLANNERS
ASSOCIATES
PO Box 4119 3040 Avemotre Square PI.
Lynchburg, VA 24502 CharlanesviM,, VA 22911
Phone: 434.316.6030 Phone: 4344.984.2700
www.wwassoctates net
ALBEMARLE COUNTY GENERAL CONSTRUCTION NOTES FOR EROSION AND SEDIMENT CONTROL PLANS
1. THE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO THE PRE -CONSTRUCTION
CONFERENCE, ONE WEEK PRIOR TO THE COMMENCEMENT OF LAND DISTURBING ACTIVITY, AND ONE WEEK
PRIOR TO THE FINAL INSPECTION.
2. ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CONSTRUCTED AND MAINTAINED ACCORDING TO
MINIMUM STANDARDS AND SPECIFICATION OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK
AND VIRGINIA REGULATIONS VR 625-02-00 EROSION AND CONTROL SEDIMENT REGULATIONS.
3. ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR AS THE FIRST STEP
IN CLEARING.
4. A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE MAINTAINED ON THE SITE
AT ALL TIMES.
5. PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON THESE PLANS
(INCLUDING, BUT NOT LIMITED TO, OFF-SITE BORROW OR WASTE AREAS), THE CONTRACTOR SHALL
SUBMIT A SUPPLEMENTARY EROSION CONTROL PLAN TO THE OWNER FOR REVIEW AND APPROVAL BY THE
PLAN APPROVING AUTHORITY.
6. THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION CONTROL MEASURES
NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS DETERMINED BY THE PLAN APPROVING
AUTHORITY.
7. ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL TIMES DURING
LAND DISTURBING ACTIVITIES AND DURING SITE DEVELOPMENT UNTIL FINAL STABILIZATION IS ACHIEVED.
8. DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED FILTERING DEVICE.
9. THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY AND AFTER EACH
RUNOFF -PRODUCING RAINFALL EVENT. ANY NECESSARY REPAIRS FOR 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 TO COMPLIANCE WITH SECTION 13-301 OR THE CODE OF
ALBEMARLE.
14. BORROW, FILL OR WASTE ACTIVITY INVOLVING INDUSTRIAL -TYPE POWER EQUIPMENT SHALL BE LIMITED TO
THE HOURS OF 7:OOA.M. TO 9:00 P.M.
15. BORROW, FILL OR WASTE ACTIVITY SHALL BE CONDUCTED IN A SAFE MANNER THAT MAINTAINS LATERAL
SUPPORT, IN ORDER TO MINIMIZE ANY HAZARD TO PERSONS, PHYSICAL DAMAGE TO ADJACENT LAND AND
IMPROVEMENTS, AND DAMAGE TO ANY PUBLIC STREET BECAUSE OF SLIDES, SINKING, OR COLLAPSE.
16. THE DEVELOPER SHALL RESERVE THE RIGHT TO INSTALL, MAINTAIN, REMOVE OR CONVERT TO PERMANENT
STORMWATER MANAGEMENT FACILITIES WHERE APPLICABLE ALL EROSION CONTROL MEASURES REQUIRED BY
THIS PLAN REGARDLESS OF THE SALE OF ANY LOT, UNIT, BUILDING OR OTHER PORTION OF THE
PROPERTY.
17. TEMPORARY STABILIZATION SHALL BE TEMPORARY SEEDING AND MULCHING. SEEDING IS TO BE AT 75
LBS/ACRE, AND IN THE MONTHS OF SEPTEMBER TO FEBRUARY TO CONSIST OF 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 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/1000SF. ALTERNATIVES ARE SUBJECT TO APPROVAL BY THE COUNTY
EROSION CONTROL INSPECTOR.
19. MAINTENANCE: ALL MEASURES ARE TO BE INSPECTED WEEKLY AND AFTER EACH RAINFALL. ANY DAMAGE
OR CLOGGING TO STRUCTURAL MEASURES IS TO BE REPAIRED IMMEDIATELY. SILT TRAPS ARE TO BE
CLEANED WHEN 50% OF THE WET STORAGE VOLUME IS FILLED WITH SEDIMENT. ALL SEEDED AREAS ARE
TO BE RESEEDED WHEN NECESSARY TO ACHIEVE A GOOD STAND OF GRASS. SILT FENCE AND DIVERSION
DYKES WHICH ARE COLLECTING SEDIMENT TO HALF THEIR HEIGHT MUST BE CLEANED AND REPAIRED
IMMEDIATELY.
20. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE REMOVED WITHIN 30 DAYS OF
FINAL SITE STABILIZATION, WHEN MEASURES ARE NO LONGER NEEDED, SUBJECT TO APPROVAL BY THE
COUNTY EROSION CONTROL INSPECTOR.
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
17-2076).
SEQUENCE OF CONSTRUCTION
1. CONTRACTOR TO SCHEDULE AND ATTEND A PRE -CONSTRUCTION MEETING WITH ALBEMARLE COUNTY AND
OBTAIN ALBEMARLE COUNTY LAND DISTURBANCE PERMIT PRIOR TO THE START OF ANY LAND DISTURBING/
CONSTRUCTION ACTIVITIES ASSOCIATED WITH THIS PLAN.
2. INSTALL PERIMETER CONTROLS AND INLET PROTECTIONS IN LOCATIONS SHOWN ON THE PLANS PRIOR TO
BEGINNING CONSTRUCTION.
3. PERFORM GRADING OPERATIONS TO BRING SITE TO SUBGRADE ELEVATIONS AND MAINTAIN POSITIVE
DRAINAGE TO SEDIMENT TRAPPING DEVICES. STABILIZE AREAS AS THEY ARE BROUGHT TO GRADE WITH
GRAVEL OR SEEDING.
4. CONSTRUCT STRUCTURES AND INSTALL UTILITIES
5. STABILIZE ALL REMAINING DISTURBED AREAS.
7. ALL EROSION AND SEDIMENT CONTROLS SHALL BE REMOVED WITHIN 30 DAYS OF FINAL SITE
STABILIZATION OR WHEN MEASURES ARE NO LONGER NEEDED. REMOVALS ARE SUBJECT TO APPROVAL BY
THE COUNTY EROSION CONTROL INSPECTOR.
8. CLOSE OUT THE PROJECT.
DESIGNED BY: PROJECT:
SAR THOMAS JEFFERSON FOUNDATION
DRAWN BY: WATER AND WASTEWATER IMPROVEMENTS PART l i
KW ALBEMARLE COUNTY, VIRGINIA
TITLE:
DIHR BY: EROSION AND SEDIMENT CONTROL NARRATIVE
HFW
WWA NUMBER: FILE NAME: DISCIPLINE: SCALE: DATE:
215015.02B 501502B_ESC-1_VSMP.d L H: NIA
V. NIA 08/05/15
SET REV. NO.
1
DRAWING NUMBER:
C-3
SHEET NUMBER:
3 of 6
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1992 3.08 Paved construction entrance for erosion control plans
1992 3.05 1992 3.07 - STONE 70' MIN.
SILT FENCE CUL VERT INLET CONSTRUCTION
SV-2A
CONSTRUCTION OF A SILT FENCE SILT FENCE DROP INLET ACCESS 3" COURSE ASPHALT TO'
PROTECTION
(WITHOUT WIRE SUPPORT) PROTECTION TABLE 3.32-D 2% 2% EXISTNG
(Revised June 2003) PAVEMENT
1. SET THE STAKES. 2. ]EXCAVATE A 4"X 4" TRENCH
UPSLOPE ALONG THE LINE OF 2 X 4' WOOD FRAME 17RUP INLET ENDWXL PERMANENT SEEDING SPECIFICATIONS FOR PIEDMONT AREA
STAKES WITH GRATE
6'MAX. - T FRAME \-6" MIN. 21A AGGREGATE BASE
1.51 MAX SEED' PROFIL
LAND USE SPECIES APPLICATION PER ACRE
TOE OF FILL i 0 95-100%
Jill CULVERT Tall Fescuel
II 3' "N. I . STONE
I Minimum Care Lawn Perennial Ryegrass 0-5% 70' MIN.
61 CONSTRUCTION ASPHALT PAVED
FLOW (Commercial or Residential) Kentucky Bluegrass' 0-5% AC,
EXCESS CESS WASHRACK
ill GATHER TOTAL: 175-200 tbs. F"
AT CORNERS f I
High-Maintenance Lawn Tall Fescue' TOTAL: 200-250 tbs. EXIST�N3
3. STAPLE FILTER MATERIAL 4. 133ACKFIU AND COMPACT Tall Fescue' 128 tbs. 2% 27- FPIVFVE.NTJ
TO STAKES AND EXTEND 'THE EXCAVATED SOIL. 12' MIN.*
IT INTO THE TRENCH. PERSPECTIVE VIEWS ---------------- ----------- General Slope (3:1 or less) Red Top Grass or Creeping Red Fescue 2 tbs. 2%
Seasonal Nurse Crop2 20 tbs.
STAKE TOTAL: 150 tbs.
*MUST EXTEND FULL WIDTH POSITIVE DRAINAGE
TOE OFFILL Tall Fescue 108 lbs. 4 TO SE�IMENT
AX
3' i.
V
Red Top Grass or Creeping Red Fescue 2 tbs. TRAPPING DFVICE
OF INGRESS AND EGRESS
FARRIC Low-Maintenance Slope 'OPERATION
Seasonal Nurse Crop 20 tbs.
SILT FENCE IN *DISTANCE IS 6' MINIMUM IF FLOW (Steeper than 3:1) Cnownvetch3 20 tbs. PLAN
FLOV IS TOWARD EMBA`JKMENT
TOTAL: 150 tbs.
W
t
FLOW
L
I - When selecting varieties of turtgrass, use the Virginia Crop Improvement Association (VCIA) recommended
SHEET FLOW INSTALLATION turfgrassvariety list, Quality seed will bear a label indicating that they are approved by VCIA. A current turfgrass 12' POSIT'VE DRAINAGE
(PERSPECTIVE VIEW)I ELEVATION OF STAKE ANDvariety list is available at the local County Extension office or through VCIA at 804-746-4884 or at 2% TO SE VENT
TRAPPING DEVICE
FABRIC ORIENTATION DETAIL A
hftp://sudan.cses.vt.edu/htmlfrurf/turf/tpublications/publications2.htmi
OPTIONAL STONE COMBINATION M
2 - Use seasonal nurse crop in accordance with seeding dates as stated below:
February 16 -April ............................... Annual Rye FILTER CLOTH-/
SPECIFIC APPLICATION 1.5 May I" - August 15Ih ...... _ ... ....... Foxtail Millet SECTION A-A t.
THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE THE Augustt 16*- October ...... Annual Rye
INLET DRAINS A RELATIVELY FLAT AREA (SLOPE NO GREATER NoverTnber - February 15 . ....................... Winter Rye
rHAN 5%) WHERE THE INLET SHEET OR OVERLAND FLOWS (NOT A ruirifintun m-atcr tap of 1 hich inust be his4alled NNith a tninfintun 1 inch ballcock
EXCEEDING I C.F-S) ARE TYPICAL THE METHOD SHALL NOT 3 - Substitute Sericea lespedeza for Crownvetch east of Farmville, VA (May through September use hulled seed, shutoff valv e suppl�iiuz a wash hose With a dianicter of 1. 1; inches for adequate
APPLY TO INLETS RECEIVING CONCENTRATED FLOWS, SUCH AS
POINTS A SHOULD BE HIGHER THAN POINT B. IN STREET OR HIGHWAY MEDIANS. all other periods, use unhulled Sericea). If Flatpea is used, increase rate to 30 lbs./acre, If Weeping Lovegrass is constant pressittre. WaAi,,vater niust be canied away lroi'n the entrance to an
DRAINAGEWAY INSTALLATION FLOW ti 2.5' used, include in any slope or low maintenance mixture during warmer seeding periods, increase to 30 -40 approved sdffk2 area to realove sedfinent. All sednneiitshaft be prevented froin
(FRONT ELEVATION) I enterirt!z storin drains, ditches or watercottrses.
Source: Adapted from Installation of Straw and Fabric Filter Source: N.C. Erosion and Sediment Control
Barriers for Sediment Control, Sherwood and Wlyant Plate 3.05-2 Plannine and Design Manu 1988 Plate 3.07-1 FERTILIZER & LIME PAVED WASH RACK
CLASS I RIPRAP '6 Apply 10-20-10 fertilizer at a rate of 500 tbs. / acre (or 12 tbs. / 1,000 sq. ft.) NO SCALE
19
H1 - 35 VDOT #21, #357 OR #5 COARSE AGGREGATE Apply Pulverized Agricultural Limestone at a rate of 2 tons/acre (or 90 tbs. 11,000 sq. ft.) a
111-25 TO REPLACE SILT FENCE IN ' HORSESHOE " WHEN C I NOTE:
HIGH VELOCITY OF FLOW IS EXPECTED - A soil test is necessary to determine the actual amount of lime required to adjust the soil pH of site.
_J - Incorporate the lime and fertilizer into the top 4 - 6 inches of the soil by disking or by other means.
Source: Adapted from VDOT Standard - When applying Slowly Available Nitrogen, use rates available In Erosion & Sediment Control Technical Bulletin PIPE OUTLET CONDITIONS
Sheets and Va. DSWC Plate 3.08-1 4, 2003 Nutrient Management for Development Sites at httl3:1/www.dcr.state.va.us/sw/e&s.htm#pubs
A A
1992 3.38 1992 3-36
T
FENCING AND ARMORING TYPICAL TREATMENT 2 3d. - - ------------- -----
SOIL STABILIZATION MATTING do
SLOPE INSTALLATION LEVEL SPREADER
---
------------- PIPE OUTLET TO FLAT
AREA WITH NO DEFINED
PLAN VIEW CHAINNEL
FILL SLOPE SECTION Q
DRIP LINE SOIL STABIL17ATION MATS SHOULD
C U45TALLED VERTICALLY NOTE, SLOPE SURFACE TABLE 3.31 -B
8 - L
DOWNSLOPE FOR BEST RESULTS. SHALL BE SMOOTH
OF (Revised June 2003)
ROCKS, LUMPS Of CROSS SECTION %
DIRT, MASS AND TEMPORARY SEEDING SPECIFICATIONS TS
O_
STICKS. AT
SMALL
SNOW FENCE BON SURFACE FOR E PLACED IFIAT QUICK REFERENCE FOR ALL REGIONS d
PROPER SOIL
lit CONTACT. JUTE, OR EXCELSIOR
OR EQUIVALENT SEED FILTER CLOTH
MIN. 7') SECTION A-A KEY IN 9"-T; RECOMMENDED MR ENTIRE PERIMETER
4' STAPLED IN PLACE VARIABLE
001 APPLICATION DATES SPECIES APPLICATION RATES
oo IED 6* MIN.
BURIED 6* MIN. 6* MIN. A
1 50/50 Mix of Annual Ryegrass (Iolium multi-
7 DIRT SHAM BE BURIED 6" Sept. 1 - Feb. 15 50 -100 (Ibs/acre)
TAMPERED PRIOR florum) & Cereal (Winter) Rye (Secale cereale) 3d, (MIN.)
BOARD FENCE LAP OVER -1
TO LAVING TOP A
0 FENCE! T
Feb. 16 -Apr. 30 Annual Ryegrass (Iolium multi-florum) 60 - 100 (lbs/acre) do 1 L
�nr FENCE TOE BER 1 0 - - ----------
MAJITTAIN SLOPE ANGLE TRENCH INTO BERM AND LEVEL UP OF May 1 -Aug. _____rGerman MillIet 50 (lbs/acre) PIPE OUTLET TO WELL
CORRECT METHODS OF TREE FENCING PROGRESS DOWNSLOPE SPREADEF 2:1 OR 31
FLATTER DEFINED CHANNEL
PLAN VIEW
TOP OF I
FERTILIZER & LIME
SLOPE LINING SLOPE LINING CUT SLOPE L ,
(WET SLOP (DRY SLOPEi41 •Apply 10-10-10 fertilizer alt a rate of 450 tbs. /acre (or 10 tbs.[ 1,000 sq. ft.)
LEVEL SPREADER WITH VEGETATED LIP Apply Pulverized Agricultural Limestone at a rate of 2 tonslacre (or 90 tbs. 11,000 sq. ft.) I 0 7
TREATMENT - 2
NOTE:
POLYPROPELYENE 2- d
NON-WOVEN I - A soil test is necessary to determine the actual amount of lime required to adjust the soil pH of site.
(NEEDLE PUNCHED) TREATMENT - 2
CEOTEXTILE FILTER A-A
2 - Incorporate the lime and fertilizer into the top 4 - 6 inches of the soil by disking or by other means. SECTION T
1111T. J81HIND
TREATM NT - 2 FILTER CLOTH KEY IN 6"-Ir; RECOMMENDED FOR ENTIRE PERIMETER
ON - When applying Slowly Available Nitrogen, use rates available in Erosion & Sediment Control Technical Bulletin
3 NOTES: 1, APRON LINING MAY BE RIPRAP, GROUTED RIPRAP, GABION
SOIL BOTTOM Or FILL $LOPE # 4, 2003 Nutrient Management for Development Sites at http://www.dGr.state.va.us/sw/e&s.htm#pub BASKET, OR CONCRETE.
CORRECT -TRUNK ARMORING CROSS SECTION 0 2. La IS THE LENGTH OF THE RIPRAP APRON AS CALCULATED
USING PLATES 3.18-3 AND 3,18-4
3. d = 1.6 TIMES THE MAXIMUM STONE DIAMETER. BUT NOT
TRIANGULAR BOARD FENCE BOTTOM OF CUT SLOPE BOTTOM OF CUT SLOPE 4 &SH LESS THAN 6 INCHES.
VDOT #3. #357. #5, #56 OR
#57 COARSE AGGREGATE IN VARIABLE (MIN. 7')
01 Source: Va. DSWC Plate 3.38-2 Source: VDOT Road and Bridge Standards Plate 3.36-5 GALVANIZED WIRE MESH BASKET SECURE WIRE MESH TO TIMBER 6 CONSTRUCTION OF A SILT FENCE
OL •LOTH 6X6 TREATED TIMBER �1 (WITH WIRE SUPPORT)
FILTER C I- '' I I �9_
9 �IZR,
111-401 6" MIN. - I 1= 1 1. SET POSTS AND EXCAVATE A 4*X4' 2. STAPLE WIRE FELACING To THE POSTS
.
IN - 367 SECURE WIRE TO GROUND LTI�-'
(9 TRENCH UPSLOPE ALM THE LINE
WITH WIRE STAPLES #5 EBAR TO fflKi OF
SECURE TIMBER
3 3 POM.
1992 3.17
COMPACTED GRASS LINED
col TYPICAL WATERWAY UNDISTURBED T MIN. 3' SOIL CHANNEL 2:1 OR
SOIL FLATTER PROVIDE EC-2 LINER
C"RCOSS-SECTIONS
MIN. 6' SCC TYPICAL SECTION (SCC-1. SCC-2. SCC-3, SCC-4)
COMPACTED SOIL
NM
LEVEL SPREADER WITH RIGID LIP
Q. Jill 11 MIN. PHYSICAL REQUIREMENTS OF FILTER CLOTH NOTED IN STD. & SPEC. 3.19, RIPRAP FLOW
III VIII (IIII CL 1
11111 IIIIE-7- MIAMI], W11 N 11 SOURCE: VA. DSWC AND N.C. Erosion and Sediment Control Planning and Design Manual PLATE: 3.2't-2 4
TYPICAL CONCRETE LINED DITCH TYPICAL GRASS LINED DITCH
TYPICAL VEE CROSS-SECTIONS
3. ATTACH THE RLTIEIR FAMIC TO THE WM 4. BACKFILL MID WMPACr THE
TTi"fFENCE AND EXTEND IT INM THE TRENCH. EXCAVATED SOL.
2 2
CL COMPACTED GRASS LINED
Cal
C4 PARABOLIC WATERWAY CROSS-SECTION SOIL CHANNEL
PROVIDE EC-2 LINER 5
O TYPICAL RIRRAP CHANNEL Jill Jill
D
W-=/,IX
MIN CL)
SCC TYPICAL SECTION (SCC-5. 52-,-0)
M
NM r FLOW
FILTER CLOTH - NOTE: ALTHOUGH FILTER CLOTH IS
E PREMED. A GRANULAR FILTER MAY BE SUBSTITUTED FOR D17134SION OF FAMC AND WIRE INTO THE TRENCH.
FILTER CLOTH. ( FOR PHYSICAL REQUIREMENTS, SEE STD. &
SPEC. 3.19, RIPRAP) ISI
(X FILTER FABRIC
Source: Va. DSWC Plate 3.17-1 SOURCE: Adapted from Installation of Straw and Fabric Filter Barriers for Sediment Control, PLATE. 3.05-1
Sherwood & Wyant
3 OP
DESIGNED BY. PROJECT: SET REV. NO.
SAR THOMAS JEFFERSON FOUNDATION
ENGINEERS DRAWN BY. WATER AND WASTEWATER IMPROVEMENTS PART
SURVEYORS KM ALBEMARLE COUNTY, VIRGINIA II DRAWING NUMBER:
U)
E PLANNERS TITLE.
W) c. No DIHR BY. 122 EROSION AND SEDIMENT CONTROL DETAILS C-5
V-
N Z 1. ASSOCIATES HFW
PO Box 4119 3040 Avemore Square PI. SHEET NUMBER:
s, Csti Lynchburg, VA 24502 Chbttllle, VA 22911 WWA NUMBER: FILE NAME. DISCIPLINE. SCALE. DATE:
4S"tONAL Phone: 434.316.6090 Phone: 434.984.2700 215015.02B 501502B_ESC-6_VSMP.dWQ,ML H: NIA 5 of 6
No. SHEET REVISION BY DATE NO. SHEET REVISION _rBY DATE 0W www.wwassocialles.net I I - V. NIA 08105115 1
Or
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STORMWATER NARRATIVE
MONTALTO WATER TANK:
STORMWATER QUALITY IS NOT REQUIRED FOR THE IMPROVEMENTS PROPOSED WITH THE MONTALTO WATER TANK.
THE RUNOFF REDUCTION SPREADSHEET CALCULATIONS FOR REDEVELOPMENT INDICATE THAT THE MINIMAL AMOUNT
OF ADDITIONAL IMPERVIOUS AREA CREATED AS PART OF THIS PROJECT DOES NOT REQUIRE STORWMATER QUALITY
MEASURES TO BE IMPLEMENTED AND MEETS THE REMOVAL REQUIREMENTS AS SHOWN. A COPY OF THE RUNOFF
REDUCTION SPREADSHEET IS PROVIDED ON THIS DWG.
A STORMWATER RUNOFF ANALYSIS WAS PERFORMED FOR THE 1.29 ACRE MONTALTO TANK SITE TO DETERMINE
THE PRE AND POST -DEVELOPED PEAK DISCHARGE FOR THE PROJECT. THE ACCESS ROAD AND PARKING AREA
FOR THE NEW STORAGE TANK WERE ANALYZED USING THE VIRGINIA RUNOFF REDUCTION SPREADSHEET FOR
RE -DEVELOPMENT. THE ACCESS ROAD AND PARKING AREA WERE TREATED AS A DISCONNECTED IMPERVIOUS
AREA WITH SHEET FLOW TO A/B SOILS. THE ANALYSIS YIELDED A REDUCED CURVE NUMBER (CN) FOR THE
POST DEVELOPED CONDITION OF 58 FROM THE PRE -DEVELOPED CURVE NUMBER OF 59. THE CURVE NUMBERS
WERE USED TO DETERMINE THE PEAK DISCHARGE UTILIZING THE TR -55 METHOD.
Culvert Report
Hydrallow Express Extension for Autodesk® AutoCAD® Civil 3D® by Autodesk, Inc.
Virginia Runoff Reduction Method Re DevelopmentyYorksheet-v2.8-June 2014
Monday, Jun 22 2015
Culvert -1 Q10=1.71 CFS
Post Development TP Load (lb/yr)
44.75
Invert Elev On (ft)
= 1120.73
Calculations
Site Data
Pipe Length (ft)
= 20.00
Qmin (cfs)
= 0.71
Slope (%)
= 6.95
Qmax (cfs)
= 5.00
Invert Elev Up (ft)
= 1122.12
Tailwater Elev (ft)
= (dc+D)/2
Rise (in)
= 15.0
Date: 06110/15ry
Shape
= Circular
Highlighted
::. i0
Span (in)
= 15.0
Qtotal (cfs)
= 1.71
No. Barrels
= 1
Qpipe (cfs)
= 1.71
n -Value
= 0,013
Qovertop (cfs)
= 0.00
Culvert Type
= Circular Concrete
Veloc Dn (ft/s)
= 1.84
Culvert Entrance
= Groove end (projecting (C)
Veloc Up (ft/s)
= 3.55
Coeff. K,M,c,Y,k
= 0.0045, 2, 0.10317, 0.69, 0.2
HGL Dn (ft)
= 1121.61
Impervious (acres)
0.00 4.69 0.00 0.00
HGL Up (ft)
= 1122.64
Embankment
Channel and Flood Protection
Hw Elev (ft)
= 1122.80
Top Elevation (ft)
= 1124.00
Hw/D (ft)
= 0.54
Top Width (ft)
= 14.00
Flow Regime
= Inlet Control
Crest Width (ft)
= 50.00
c-
c
B-9)
112500
1124 w
,12707
11.^2.00
112190
„2004
111900
Culvert -11 410-1.71 CFS
r emm fR,
2"
,as
088
-012
4,12
-2.12
.912
Reac/t�P�
GrcWrCWvM HOt
Project: TJF Water and SewerVSIMP
WWA Project Number: 215015.02
By: SAR
Date: 6/19/2015
10+00 10+50
PROFILE VIEW:
NEW STORM 7 - 8
Virginia Runoff Reduction Method ReDevelopment Worksheet -v2.8 -June 2014
;To be used wl 2011 BMP Standards and Specifications:
Virginia Runoff Reduction Method Re DevelopmentyYorksheet-v2.8-June 2014
Post Development Treatment Volume (ft)
71225
Post Development TP Load (lb/yr)
44.75
Post Development TN Load (lb/yr)
Update Summary Sheet
IN■_1=SHIM
Site Data
0.00
s
00o
a.00
■7.i
�
0.95
A� m�mm�
0.00
Project Name: Montalto Water Storage Tank
mum.,
�n
1 3
E
Date: 06110/15ry
--
ite Land cover Summary
- S a
0.00
::. i0
Redeveloped Area (Ib/yr)
data input cells s
0.050
4.00
sumffi�m�
• ••
X. calculation cells
;development load limit is computed in Column 1.
A Soils 8 Soils C Soils D Soils
Total %of Total
gr'::,?r,,;'_;
xx:MR.
constant values
SCC -1
Forest (acres)
111111111111111E
292.59 8887
IR awe] 4�
5.00
5.18
Turf (acres)
0.00 31.94 0.00 0.00
31.94 9.70
EC -2
Post -Re. Development Project & Land Cover Information' Total Disturbed Acreage 1.33
50'
Impervious (acres)
0.00 4.69 0.00 0.00
4.69 1.42
0.69
0).41
Channel and Flood Protection
18
329.22 100.00
50
18
I d Ib/ r
ere ant Loa .... :..:1.;
[Pre -Development TN
D opt ( ) { Y) :>. .. 25
Post -Development Load (TNI (Ib/vrI
6 0
o
SHEET
1
OF 1
c-
c
to
c
AREA
RUN-
El
RAIN
ffl
0.35
0,21
0.07
0.07
5.00
5.18
0.38
0.020
0.0 3.0 3.0
10+00 10+50
PROFILE VIEW:
NEW STORM 7 - 8
Virginia Runoff Reduction Method ReDevelopment Worksheet -v2.8 -June 2014
;To be used wl 2011 BMP Standards and Specifications:
Virginia Runoff Reduction Method Re DevelopmentyYorksheet-v2.8-June 2014
Post Development Treatment Volume (ft)
71225
Post Development TP Load (lb/yr)
44.75
Post Development TN Load (lb/yr)
Update Summary Sheet
Total TP Load Reduction Required (lb/yr)
Site Data
0.00
0,00
00o
a.00
\ a;
• `b o0
Site Data Summary
0.95
XX 0:00
0.00
Project Name: Montalto Water Storage Tank
0.00
Total Rainfall= 43 inches
0.
Print
Date: 06110/15ry
--
ite Land cover Summary
- S a
0.00
::. i0
Redeveloped Area (Ib/yr)
data input cells s
0.050
4.00
2.46
• ••
X. calculation cells
;development load limit is computed in Column 1.
A Soils 8 Soils C Soils D Soils
Total %of Total
gr'::,?r,,;'_;
xx:MR.
constant values
SCC -1
Forest (acres)
0.00 292.59 0.00 0.00
292.59 8887
.4 _
5.00
5.18
Turf (acres)
0.00 31.94 0.00 0.00
31.94 9.70
EC -2
Post -Re. Development Project & Land Cover Information' Total Disturbed Acreage 1.33
50'
Impervious (acres)
0.00 4.69 0.00 0.00
4.69 1.42
0.69
0).41
Channel and Flood Protection
18
329.22 100.00
50
Constants
Annual Rainifall (inches) 43 -
Target Rainfall Event (inches) 1.00
Phosphorus EMG (mg/L) 0.26 Nitrogen EMC (m6IL)l 1.86
Target Phosphorus Target Load (Ib/acre/yr) 0.41
Pi 0.90
Pre-ReDevelopment Land Cover (acres) 3
Forest/Opens Space (acres) -- undisturbed,
protected Axrest/open space or reforested land
Managed Tuirf (acres) - disturbed, graded for
yards or othter turf to be mcwedlmanaged
Impervious Corer (acres)
Site Rv
0.06
Post Development Treatment Volume (ft)
71225
Post Development TP Load (lb/yr)
44.75
Post Development TN Load (lb/yr)
32.0.14
Total TP Load Reduction Required (lb/yr)
0.00
A soils B Soils C Soils D Soils Totals --
Total Runoff Volume Reduction (ft)
172
Total TP Load Reduction Achieved (lb/yr)
C Soils
Total TN Load Reduction Achieved (ib/yr)
O.bO
9
b.00
b.b0
19',a'
0.00
0,00
00o
a.00
\ a;
• `b o0
Impervious Cover
0.95
XX 0:00
0.00
0 13 ;;
0.00
o.00
0.
0.1
0.00 ;',
::0A4
0.00
0.00
::. i0
Total Runoff Volume Reduction (ft)
172
Total TP Load Reduction Achieved (lb/yr)
C Soils
Total TN Load Reduction Achieved (ib/yr)
0.77
Adjusted Post Development TP Load (lb/yr)
44.64
Remaining Phosphorous Load Reduction (Lb/yr) Required
D.
Total
-- -
`Post-ReDevelopment Land Cover (acres) -
A soils B Soils C Soils D Soils Totals
Forest/Opem Space (acres) -- undisturbed,
protected fbrrestlopen space or reforested land
Managed Tuirf (acres) - disturbed, graded for
yards or othter turf to be mowed/managed
Impervious Coker (acres)
Total
1 33i,"
_. T __.....
0
Area ChecNc Okay_.. ...:......_.Okay Okay -- Oka
f
Rv Coeffl clte nts
A soils
BSoils
C Soils
D Spits
" 0.00
1.2Q
QOD
O.OD.
• 10:;'
0.00
0,00
00o
a.00
\ a;
• `b o0
Impervious Cover
0.95
XX 0:00
0.00
0 13 ;;
Total
1 33i,"
_. T __.....
0
Area ChecNc Okay_.. ...:......_.Okay Okay -- Oka
f
Rv Coeffl clte nts
Pre-ReDewelooment -
% Mt
Drainage Area Summary
Forest (acres) I 1111111111M,
A soils
BSoils
C Soils
D Spits
ForestlOpem Space
0.02
0.03
0.04
0.05
Managed Tulrt
0.15
0.20
0.22
0.25
Impervious Cover
0.95
0.95
0.95
0.95
Pre-ReDewelooment -
% Mt
Drainage Area Summary
Forest (acres) I 1111111111M,
D.A.A I D.A. B I
D.A. C I
D.A. D D.A. E
Total
Land Coveir Summary
`Listed
Adjusted
0.001 0.2d0.11
Land Cover Summary Land Cover Summary
Pre-ReDewelooment -
% Mt
Drainage Area Summary
Forest (acres) I 1111111111M,
'Drainage Area Compliance Summary
D.A.A I D.A. B I
D.A. C I
D.A. D D.A. E
Total
TP Load Red. (Ib/yr)
0.11 O.
0.001
0.001 0.2d0.11
0.
TN Load Red. (lb/yr)
0.771 0.0
0.0c)l
0.001 0.
0-77
0.
0.98
0.00
0.00
0.9
90.74
Impervious (acres)
0.
0.1
is
'Drainage Area Compliance Summary
Post-ReDevelopment New Impervious - -- - -
Drainage Area A Summary
Land Cover Summary
D.A.A I D.A. B I
D.A. C I
D.A. D D.A. E
Total
TP Load Red. (Ib/yr)
0.11 O.
0.001
0.001 0.2d0.11
0.
TN Load Red. (lb/yr)
0.771 0.0
0.0c)l
0.001 0.
0-77
Post-ReDevelopment New Impervious - -- - -
Drainage Area A Summary
Land Cover Summary
1.08
BMP Selections
Practice
ASoils
BSoils
CSoils
DSoils
Total
%of Total
Forest (acres)
0.
0.
0.00
0.00
0.
0,00
Turf (acres)
0.
0.98
0.00
0.00
0.9
90.74
Impervious (acres)
0.
0.1
0.00
0.00
0.1
9.26
1.08
BMP Selections
Practice
Credit Area (acres)
Downstream
'Adjusted Land Cover Summary reflects the pre redevelopment 1
Maximum % Reduction Required Below
Practice
2a. Simple Disconnection to A/B Soils (Spec #1)
impervious
0.1
None
Pre-ReDewiepment Load
acres
Allowable
Velocity
(fps)
2 -Year
Velocity
(fps)
Ito (In/hr)
disconnected
managed tuirf) acreage proposed for new impervious corer. The
Maximum
Channel
Depth (ft)
Total Impervious Cover Treated (acres) 0.1
Total Turf Area Treated (acres) 0.
Total TP Load Reduction Achieved in D.A. A (Ib/yr) 0.11
Tcla' TN Load Reduction Achieved in D.A. A (Ib/yr) 0.77 r
IF THIS
DRAWING IS
A REDUCTION
'Adjusted Land Cover Summary reflects the pre redevelopment 1
Maximum % Reduction Required Below
I2 (In/hr)
GRAPHIC
SCALE MUST BE
USED
Mand cover minus the pervious land caner (forest/open space or
Pre-ReDewiepment Load
` :; i20°lo
Allowable
Velocity
(fps)
2 -Year
Velocity
(fps)
Ito (In/hr)
Qio (cfs)
managed tuirf) acreage proposed for new impervious corer. The
Maximum
Channel
Depth (ft)
Remarks
#N/A
VERT: 1 -
10"
0.10
adjusted total acreage is consistent with the Post Redevelopment
acreage (miinus the acreage of new impervteus cover). The load
TP Load Reduction Required for • :• TP Load Reduction Required for M
-
10'
0
0.23
10'
reduction requdement for the new impervious cover to meet the new
Redeveloped Area (Ib/yr)
;;:>;:>;:;:: >::1'6 New lm erviousArea Ob/ r <?:f6 --
0. p t. Y )
0.050
4.00
2.46
6.67
;development load limit is computed in Column 1.
0).19
1.00
gr'::,?r,,;'_;
6.0
SCC -1
0.45
0.23
Total Load Reduction Required
.4 _
5.00
5.18
0.54
0.020
0.0 3.0 3.0
EC -2
0.23
50'
0
1.30
50'
0.69
0).41
Channel and Flood Protection
18
HORZ_ 1 -
50
18
I d Ib/ r
ere ant Loa .... :..:1.;
[Pre -Development TN
D opt ( ) { Y) :>. .. 25
Post -Development Load (TNI (Ib/vrI
6 0
Segment ID
Incremental
Incremental c Drainage Area
(Ac.)
Incremental
c A\
Accumulated
Tc
(min)
I2 (In/hr)
Q2 (cfs)
Slope
(ft/ft)
��
Channel
Geometry
b Z� ZZ
Liner Material
VZ x Ry
n
Allowable
Velocity
(fps)
2 -Year
Velocity
(fps)
Ito (In/hr)
Qio (cfs)
10 Year
Depth (ft)
Maximum
Channel
Depth (ft)
Remarks
#N/A
SCC -1
0.45
0.10
0.05
0.05
5.00
5.18
0.23
0.200
0.0 3.0 3.0
EC -2
0.21
0.050
4.00
2.46
6.67
0.30
0).19
1.00
gr'::,?r,,;'_;
6.0
SCC -1
0.45
0.23
0.10
0.10
5.00
5.18
0.54
0.020
0.0 3.0 3.0
EC -2
0.23
0.050
4.00
1.30
6.67
0.69
0).41
1.00
18
a)
c
m
18
m!-
a
m
o
SHEET
1
OF 1
c-
c
to
c
AREA
RUN-
INLET
RAIN
SCC -2
0.35
0,21
0.07
0.07
5.00
5.18
0.38
0.020
0.0 3.0 3.0
EC -2
0.18
0.050
4.00
1.19
6.67
0.49
0).36
1.00
`:.'`;: s , Gi; CK,
Q
ELEVATIONS
I-
LENGTH SLOPE
DIA
MANNING'S
CITY
VEL
TIME
YD -2
TOP INLET
INLETDEPTH
INLETNo.
WIDTH
POINT
POINT
"A"
COEF
0,05
(TO
010)
YD -3
SCC -3
0.35
0.17
0.06
0.06
5.00
5.18
0.31
0.020
0.0 3.0 3.0
EC -2
0.16
0.050
4.00
1.12
6.67
0.40
0).33
1.00
INIHR
CFS
UPPER
LOWER
FT FTIFT
IN
CFS
FPS
SEC
FT
FT
FT
Tank Drain Only
8
VDOTStd. C1-7
0.44
MENT ULA'TED
6.7
SCC.4
0.40
0.64
0.26
0.26
5.00
5.18
1.33
0.120
0.0 3.0 3.0
EC -2
0.57
0.050
4.00
3.22
6.67
1.71
0).41
1.00
8
9
10
11
12 13
14
15
16
17
18
19
20
21
22
23
8
7
0-44
0.40
0.18 0."18
5.00
6.67
1.17
SCC -5
0.40
0.04
0.02
0.02
5.00
5.18
0.08
0.057
0.0 2.0 2.0
EC -2
0.10
0.050
4.00
1.21
6.67
0.11
0).20
1.00
6
YD -5
0.00
0.00
0.00 0.00
5.00
6.67
0.00
SCC -6
0.30
0.12
0.04
0.04
5.00
5.18
0.19
0.052
0.0 2.0 2.0
EC -2
0.17
0.050
4.00
1.50
6.67
0.24
0).27
1.00
6.66
0.26
'Table 6: Sump Inlet Design Table
Weighted CN
STORM SEWER DESIGN
2 -year storm
Adjusted CN
10 -year
storm
Adjusted
CN
Target Rainfall Event (in)
Inlet
3.5
WWA PROJECT NUMBER
215015.02
D.A. A CN
1.17
63
63
63
D.A. B CN
Tailwater Depth (ft)
#N/A
#N/A
#N/A
COMPUTATIONS
0.0
#N/A
#N/A
#N/A
D.A. D CN
1.20
COUNTY Albemarle
#N/A
#N/A
DISTRICT
Class
Al Dry
Riprap
#N/A
#N/A
#N/A
Class
Al Dry
Riprap
Class
Al Dry
Riprap
Apron Length (ft)
5.0
5.0
6.0
5.0
4.0
4.0
Apron Width(s) (ft)
Ev
5.0
6.0
DESCRIPTION
TJF Water and Sewer Improvements VSMP
4.0
Side Slopes (H:V)
n/a
n/a
m
W
o
u
n/a
as
E
>1
`
v
18
a)
c
m
18
m!-
a
m
o
SHEET
1
OF 1
c-
c
to
c
AREA
RUN-
INLET
RAIN
RUNOFF
INVERT
o
n
CAPA-
FLOW
EASEMENT
FROM
TO
DRAIN
OFF
CA
71ME
FALL
Q
ELEVATIONS
I-
LENGTH SLOPE
DIA
MANNING'S
CITY
VEL
TIME
YD -2
TOP INLET
INLETDEPTH
INLETNo.
WIDTH
POINT
POINT
"A"
COEF
0,05
(TO
010)
YD -3
12" ADS Nyloplast Standard Grate
0.05
0.90
0,045
n
(FULL)
(FULL)
0.05
REMARKS
ELEVATIONS
(H)
YD -5
READ
0.03
0.70
ACRES
c
INCRE- ACC7UM-
MIN
INIHR
CFS
UPPER
LOWER
FT FTIFT
IN
CFS
FPS
SEC
FT
FT
FT
Tank Drain Only
8
VDOTStd. C1-7
0.44
MENT ULA'TED
6.7
END
END
0.25
3.52
OK
1
2
3
4
5 6
7
8
9
10
11
12 13
14
15
16
17
18
19
20
21
22
23
8
7
0-44
0.40
0.18 0."18
5.00
6.67
1.17
1107.16
1106.86
59.9 0.0050
15
0.013
4.58
3.74
16.04
Tank Drain
1109.89
2.73
8
20.00
6
YD -5
0.00
0.00
0.00 0.00
5.00
6.67
0.00
742.18
741.78
8.0 0.0500
12
0.010
10.38
13,22
0.61
Tank Drain
746.31
4.13
6
20.00
YD -5
4
0.05
0.78
0,04 0.04
5.01
6.66
0.26
739.59
738.81
15.6 0.0500
12
0.010
10.38
13.22
1.18
Includes Drainage from YDw and RD -1
745,51
5.92
YD -5
20.00
20.00
YD -3
YD -2
0.05
0.90
0.05 O.(05
5.00
6.67
0.30
744.52
743.02
30.0 0.0500
12
0.010
10.38
13.22
2.27
Includes Drainage frorm YD -3
748.61
4.09
YD -3
20.00
YD 2
1
OA1
0.85
0.01 0-05
5.04
6.65
0.36
741.14
740.92
10.9 0.0202
12
0,010
6.60
8.40
1.30
includes Drainage frorm YD -2
746.88
5.74
YD -2
20.00
'Table 6: Sump Inlet Design Table
3.18
Weighted CN
1 -year
storm
Adjusted
CN
2 -year storm
Adjusted CN
10 -year
storm
Adjusted
CN
Target Rainfall Event (in)
Inlet
3.5
3.70
5.60
D.A. A CN
1.17
63
63
63
D.A. B CN
Tailwater Depth (ft)
#N/A
#N/A
#N/A
D.A. C CN
0.0
#N/A
#N/A
#N/A
D.A. D CN
1.20
#N/A
#N/A
#N/A
D.A. E CN
Class
Al Dry
Riprap
#N/A
#N/A
#N/A
3.18
YARD DRAIN INLET DESIGN
(ASSUMES INLET 50% CLOGGED)
OP -1
OP -2
OP -3
Inlet
OP -5
OP -6
Hydrology
1.71
1.17
0.40
0.35
Inlet
0.26
Tailwater Depth (ft)
0.0
v
0.0
0.0
0.0
0.0
Discharge Velocity (fps)
1.84
1.30
1.20
0.46
4.47
5.59
U
Class
Al Dry
Riprap
Class
Al Dry
Riprap
Class
Al Dry
Riprap
Class
Al Dry
Riprap
Class
Al Dry
Riprap
Class
Al Dry
Riprap
Apron Length (ft)
5.0
5.0
6.0
5.0
4.0
4.0
Apron Width(s) (ft)
Ev
5.0
6.0
5.0
4.0
4.0
Side Slopes (H:V)
n/a
n/a
m
W
o
u
n/a
as
E
>1
`
v
18
a)
c
m
18
m!-
a
m
o
i=
a3
m
c-
c
to
c
76
c
¢
o
n
IL
C7
¢
U
U
I-
C1
to
H
CC
YD -2
12" ADS Nyloplast Standard Grate
0.01
0.85
0.009
5.00
6.7
0.06
0.05
0,05
3.22
OK
YD -3
12" ADS Nyloplast Standard Grate
0.05
0.90
0,045
5.00
6.7
0.30
0.05
0.08
4.56
OK
YD -5
12" ADS Nylopiast Standard Grate
0.03
0.70
0.021
5.00
6.7
0.14
0.05
0.07
3.89
OK
6
VDOT Std. CIA
10.17615.00
Tank Drain Only
8
VDOTStd. C1-7
0.44
0.40
6.7
1.17
0.33
0.25
3.52
OK
3.18
Outlet Protection
ID (OP -1, OP -2, etc)
OP -1
OP -2
OP -3
OP -4
OP -5
OP -6
Design Flow (cfs)
1.71
1.17
0.40
0.35
0.36
0.26
Tailwater Depth (ft)
0.0
0.0
0.0
0.0
0.0
0.0
Discharge Velocity (fps)
1.84
1.30
1.20
0.46
4.47
5.59
Rip Rap Gradation
Class
Al Dry
Riprap
Class
Al Dry
Riprap
Class
Al Dry
Riprap
Class
Al Dry
Riprap
Class
Al Dry
Riprap
Class
Al Dry
Riprap
Apron Length (ft)
5.0
5.0
6.0
5.0
4.0
4.0
Apron Width(s) (ft)
5.0
5.0
6.0
5.0
4.0
4.0
Side Slopes (H:V)
n/a
n/a
n/a
n/a
n/a
n/a
Apron Depth (in)
18
18
18
18
18
18
1 REVISED DISTURBED AREAS FOR BMP CALCULATION RU 8-21-15 TH OF �j DESIGNED BY: PROJECT.HOMAS JEFFERSON FOUNDATION SET REV. No.
.� ENGINEERS WATER AND WASTEWATER IMPROVEMENTS PART II
�1 / W
SUR,VEYORS DRAWN B B ALBEMARLE COUNTY, VIRGINIA DRAWING NUMBER:
TITLE:
E PLANNERS CALCULATIONS AND PROFILES C-6
� c. No. 122 a DIHR BY:
�a _ �. fs' ww ASSOCIATES HFW
Z PO Box 4119 3040 Avemore Square Pl. SHEET NUMBER:
't Lynchburg, VA 24502 Cl=l9ttcimlle,VA22911 WWA NUMBER: FILE NAME: DISCIPLINE: SCALE: DATE:
Phone: 434.316.6080 Phone: 434.984.2700
�sIONAL E� 215015.026 501502B_ESC-7_VSMP.d L H: AS SHOWN 1081051151 6 Of 6
NO. SHEET REVISION BY DATE NO. SHEET REVISION BY DATE 0*" - www.nwussoclatcs.ne` V. NIA