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„� E2 Erosion Control Narrative & Notes
E3 Block "O" Erosion and Sediment Control Plan
E4 Block "M" Erosion and Sediment Control Plan
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SITE TABULATIONS
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SURVEY BY ROUDABUSH &GALE DATED MARCH
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70' MIN. EXISTING
PAVEMENT CONSTRUCTION OF A SILT FENCE
A A A 3 5:1 (WITHOUT WIRE SUPPORT)
1-III-III-III-III-III-1il= 2. EXCAVATE A 4" x 4" TRENCH
LIIIII IIIII IIIII IIIII IIII, 1. SET THE STAKES UPSLOPE ALONG THE LINE OF
FILTER CLOTH 6. MIN. A MOUNTABLE BERM STAKES.
(OPTIONAL) 6"
F ad I SIDE ELEVATION �� MAXI
PIPE OUTLET TO EXISTING GROUND _
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VDOT p1 NAGE 10' MIN.
FILTER CLOTH KEY IN 6"-9"; IT INTO THE TRENCH. z
COURSE AGGREGATE TO SEDIMEM
RECOMMENDED FOR B TRAPPING DEVICE W w
APRON LINING SHALL BE ENTIRE PERIMETER O Y m W
k MUST EXTEND FULL WIDTH
OF INGRESS AND EGRESS
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SEE STONE PLAN VIEW (PERSPECTIVE VIEW)
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Note: Modified Mud Trap
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To Be Placed At Low Point 0%— _ �� B A
SECTION A -A T REINFORCED CONCRETE DRAIN SPACE \ /
MUD TRAP SECTION a-B \ - - _ _ _ / DATE: 05-21-2021
(O.IMODIFIED
FILTER CLOTH LKEY IN ENDED SCALE: N.T.S.
TO SCALE RECOMMENDED FOR POINT A SHOULD BE HIGHER THAN POINT B.
APRON LINING SHALL BE ENTIRE PERIMETER JOB: 16.0098
DRAINAGEWAY INSTALLATION FILE: 16.0098
(FRONT ELEVATION)
OUTLET PROTECTION TABLE 3 C�ONoS TRUCTION ENTRANCE DETAIL CEJ LE SILT SCALE
DETAIL SF NOT E I
SHEET: OF 04
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Outlet Protection Table
TEMPORARY DIVERSION DIKE DD
Outlet
Pipe
Diameter
Discharge (cfs)
Apron
Upstream
Apron Width
Downstream
Stone
Depth
NOT TO SCALE
Structure
(in)
Length (ft)
(ft)
Apron Width (ft)
(in)
1
18
27.97
20
4.5'
4.5'
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1 EROSION AND SEDIMENT CONTROL NARRATIVE
PRIOR TO CONSTRUCTION
1. OWNER SHALL POST SURETY BONDS FOR CONSTRUCTION, EROSION &
SEDIMENT CONTROL.
2. CONTRACTOR SHALL OBTAIN PERMITS TO WORK WITHIN STATE
RIGHT-OF-WAY (VDOT LAND -USE PERMIT). BONDING FOR WORK WITHIN THE
VDOT RIGHT-OF-WAY MAY BE REQUIRED TO OBTAIN THE PERMIT.
3. CONTRACTOR SHALL COORDINATE WITH OWNER TO OBTAIN VSMP PERMITS, AS
REQUIRED BY THE STATE DEPARTMENT OF ENVIRONMENTAL QUALITY (DEQ).
4. CONTRACTOR SHALL OBTAIN LAND DISTURBANCE PERMIT FROM THE COUNTY
OF ALBEMARLE PRIOR TO BEGINNING CONSTRUCTION.
5. A PRE -CONSTRUCTION MEETING WITH THE ENGINEER, THE CERTIFIED LAND
DISTURBER, AND THE ENVIRONMENTAL INSPECTOR MAY ALSO BE REQUIRED.
ALLOW 72 HOURS FOR COORDINATION AND SCHEDULING OF
PRE -CONSTRUCTION MEETING.
PROJECT DESCRIPTION
THE FIRST STAGE OF CONSTRUCTION IS BIRNAM WOOD BLOCK "O" PROPOSING THE
CONSTRUCTION OF 5 ATTACHED TOWNHOUSE UNITS. THE SECOND STAGE OF
CONSTRUCTION IS BIRNAM WOOD BLOCK "M" PROPOSING THE CONSTRUCTION OF 5
ATTACHED TOWNHOUSE UNITS.
EXISTING SITE CONDITIONS & ADJACENT AREAS
THE CURRENT CONDITIONS OF TMP 62-16D CONSISTS OF OPEN GRASS AREAS.
SOILS
65B - FAIRVIEW SANDY LOAM (2% TO 7% SLOPES):
MODERATELY SLOPING AND WELL DRAINED. STARTING AT SURFACE LAYER TO
SUBSTRATUM, SOIL LAYERS CONSIST OF SANDY LOAM, CLAY, SANDY CLAY LOAM
PERMEABILITY IS MODERATELY HIGH TO HIGH, AVAILABLE WATER STORAGE
CAPACITY IS MODERATE. SURFACE RUNOFF IS MEDIUM.
65C - FAIRVIEW SANDY LOAM (7% TO 15% SLOPES):
MODERATELY SLOPING AND WELL DRAINED. STARTING AT SURFACE LAYER TO
SUBSTRATUM, SOIL LAYERS CONSIST OF SANDY LOAM, CLAY, SANDY CLAY LOAM.
PERMEABILITY IS MODERATELY HIGH TO HIGH, AVAILABLE WATER STORAGE
CAPACITY IS MODERATE. SURFACE RUNOFF IS MEDIUM.
STRUCTURAL PRACTICES
1. TEMPORARY CONSTRUCTION ENTRANCE (3.02) - A TEMPORARY
CONSTRUCTION ENTRANCE SHALL BE INSTALLED AT SITE ENTRANCE ON
FOWLER STREET.
2. SILT FENCE BARRIER (3.05) - SILT FENCE BARRIERS WILL BE INSTALLED TO
FILTER RUNOFF FROM SHEET FLOW AS INDICATED ON THE EROSION AND
SEDIMENT CONTROL PLAN.
VEGETATIVE PRACTICES
1. TOPSOILING & STOCKPILING (3.30) - TOPSOIL WILL BE STRIPPED FROM
AREAS TO BE GRADED AND STOCKPILED FOR LATER USE. STOCKPILES ARE
TO BE STABILIZED WITH TEMPORARY VEGETATION OR TO HAVE SILT FENCE
INSTALLED ALONG THE LOWER PERIMETER TO PROTECT DOWNSTREAM AREAS.
2. TEMPORARY SEEDING (3.31 ) - AREAS NOT BROUGHT TO FINAL GRADE FOR A
PERIOD OF MORE THAN 14 DAYS SHALL BE STABILIZED WITH A TEMPORARY
SEED MIXTURE ACCEPTABLE FOR THAT TIME OF YEAR. CRIMPING, PUNCH
ROLLER -TYPE ROLLERS, OR TRACK WALKING MAY BE USED TO
INCORPORATE STRAW MULCH INTO THE SOIL ON SLOPES IF STRAW IS TO BE
USED.
3. PERMANENT SEEDING (3.32) - AREAS BROUGHT TO FINAL GRADE OR THOSE
CONSTRUCTION AREAS THAT WILL REMAIN DORMANT FOR YEAR OR MORE
SHALL BE STABILIZED WITH A PERMANENT SEED MIXTURE ACCEPTABLE TO
THAT TIME OF YEAR. PREPARE SURFACE WITH APPROVED TREATMENT AND
ADDITIVES PRIOR TO APPLYING SEED.
4. MULCH (3.35) - PLANT RESIDUES OR OTHER SUITABLE MATERIALS SHALL BE
APPLIED TO DISTURBED SURFACES TO PREVENT EROSION AND REDUCE
OVERLAND FLOW VELOCITIES. THIS PRACTICE SHOULD BE APPLIED TO ALL
SEEDING OPERATIONS, OTHER PLANTER MATERIALS WHICH DO NOT PROVIDE
ADEQUATE SOIL PROTECTION BY THEMSELVES, AND BARE AREAS WHICH
CANNOT BE SEEDED DUE TO THE SEASON BUT WHICH STILL NEED
PROTECTION TO PREVENT SOIL LOSS. CRIMPING, PUNCH ROLLER -TYPE
ROLLERS, OR TRACK WALKING MAY BE USED TO INCORPORATE STRAW MULCH
INTO THE SOIL ON SLOPES IF STRAW IS TO BE USED.
5. DUST CONTROL (3.39) - DUST CONTROL METHODS MUST BE USED TO
REDUCE THE AMOUNT OF AIRBORNE DUST DURING ALL PHASES OF
CONSTRUCTION WHERE SOIL IS EXPOSED OR DISTURBED.
MANAGEMENT STRATEGIES
1. CONSTRUCTION WILL BE SEQUENCED SO THAT GRADING OPERATIONS CAN BE
SEQUENCED, AND ALSO BEGIN AND END AS QUICKLY AS POSSIBLE.
2. THE CONSTRUCTION ENTRANCE AND PERIMETER EROSION CONTROL MEASURES
SUCH AS DIVERSION DIKES AND SILT FENCE SHALL BE INSTALLED AS THE
FIRST STEP OF DISTURBANCE.
3. MUD TRAP MEASURES SHALL BE INSTALLED WITH PERIMETER SILT FENCE
PRIOR TO ANY GRADING AND SHALL BE SEEDED AND MULCHED IMMEDIATELY
FOLLOWING INSTALLATION.
4. THE MUD TRAP SHALL BE CHECKED FOR SEDIMENT ACCUMULATION AFTER
EVERY RUNOFF PRODUCING STORM EVENT. SEDIMENT SHOULD BE REMOVED
WHEN IT REACHES ONE-HALF OF THE DESIGN VOLUME.
5. TEMPORARY SEEDING OR OTHER STABILIZATION METHODS SUCH AS BASE
AGGREGATE WILL FOLLOW IMMEDIATELY AFTER REACHING FINAL GRADES.
6. ALL SEEDED AREAS WILL BE CHECKED REGULARLY TO ENSURE THAT A GOOD
STAND IS MAINTAINED. AREAS SHOULD BE FERTILIZED AND RE -SEEDED AS
NEEDED TO ESTABLISH GROWTH.
7. THE JOB SUPERINTENDENT SHALL BE RESPONSIBLE FOR THE INSTALLATION
AND MAINTENANCE OF ALL EROSION AND SEDIMENT CONTROL PRACTICES.
8. DURING FINE GRADING OPERATIONS MAINTAIN ALL DIVERSION DIKES TO THE
MUD TRAPS. THE MUD TRAPS SHALL REMAIN FUNCTIONAL THROUGHOUT
CONSTRUCTION.
9. AFTER BEING NOTIFIED BY THE EROSION AND SEDIMENT CONTROL
ADMINISTRATOR, THE TEMPORARY EROSION AND SEDIMENT CONTROLS MAY
BE CLEANED UP OR REMOVED, AND THE MUD TRAPS CAN BE FILLED IN AND
SEEDED, THEREBY REDIRECTING DRAINAGE TO THE PERMANENT FACILITIES.
PERMANENT STABILIZATION
ALL AREAS DISTURBED BY CONSTRUCTION SHALL BE STABILIZED WITH STRAW &
SEED IMMEDIATELY FOLLOWING FINISHED GRADE. SEEDING SHALL BE DONE WITH
KENTUCKY 31 TALL FESCUE IN ACCORDANCE TO STANDARD AND SPECIFICATION
3.32, PERMANENT SEEDING, OF THE VIRGINIA EROSION AND SEDIMENT CONTROL
HANDBOOK. ANY FERTILIZER AND LIME APPLICATIONS SHALL BE IN ACCORDANCE
WITH SOIL TEST RESULTS. ALL SEEDED AREAS WILL BE STRAW MULCHED TO
PROTECT AGAINST RILL EROSION AND TO PRESERVE SOIL MOISTURE THAT WILL
ENHANCE SEED GERMINATION. CRIMPING, PUNCH ROLLER -TYPE ROLLERS, OR
TRACK WALKING MAY BE USED TO INCORPORATE STRAW MULCH INTO THE SOIL ON
SLOPES IF STRAW IS TO BE USED.
EROSION CONTROL MAINTENANCE
1. IN GENERAL, ALL EROSION AND SEDIMENT CONTROL MEASURES SHALL BE
CHECKED DAILY AND AFTER EACH SIGNIFICANT RAINFALL. THE FOLLOWING
ITEMS WILL BE CHECKED IN PARTICULAR:
2. THE CONSTRUCTION ENTRANCE SHALL BE CHECKED DAILY FOR SOIL BUILDUP.
IF THE ENTRANCE BECOMES CLOGGED WITH SOIL AND FAILS TO PREVENT THE
TRANSPORTATION OF SOIL ONTO THE ROADWAY, ADDITIONAL STONE,
REPLACEMENT OF STONE, OR A WASH -RACK MAY BE REQUIRED.
3. SILT FENCE SHALL BE INSPECTED IMMEDIATELY AFTER EACH RAINFALL AND
AT LEAST DAILY DURING PROLONGED RAINFALL. CLOSE ATTENTION SHALL BE
PAID TO THE REPAIR OF DAMAGED SILT FENCE RESULTING FROM END RUNS
AND UNDERCUTTING. SHOULD THE FABRIC ON A SILT FENCE DECOMPOSE OR
BECOME INEFFECTIVE PRIOR TO THE END OF THE EXPECTED USABLE LIFE
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AND THE BARRIER STILL BE NECESSARY, THE FABRIC SHALL BE REPLACED
PROMPTLY. SEDIMENT DEPOSITS SHOULD BE REMOVED AFTER EACH STORM
EVENT. THEY MUST BE REMOVED WHEN DEPOSITS REACH APPROXIMATELY
ONE-HALF THE HEIGHT OF THE BARRIER. ANY SEDIMENT DEPOSITS
REMAINING IN PLACE AFTER THE SILT FENCE IS NO LONGER REQUIRED SHALL
BE DRESSED TO CONFORM WITH THE EXISTING GRADE, PREPARED, AND
SEEDED.
4. DIVERSION DIKES SHALL BE INSPECTED AFTER EVERY STORM AND REPAIRS
MADE TO THE DIKE FLOW CHANNEL OUTLET OR SEDIMENT TRAPPING
FACILITY AS NECESSARY. ONCE EVERY TWO WEEKS, WHETHER A STORM
EVENT HAS OCCURRED OR NOT, THE MEASURE SHALL BE INSPECTED AND
REPAIRS MADE IF NEEDED. DAMAGES CAUSED BY CONSTRUCTION TRAFFIC OR
OTHER ACTIVITY MUST BE REPAIRED BEFORE THE END OF EACH WORKING
DAY.
5. ALL SEEDED AREAS WILL BE CHECKED REGULARLY TO ENSURE THAT A GOOD
STAND IS MAINTAINED. AREAS SHOULD BE FERTILIZED AND RE -SEEDED AS
NEEDED. IN THE EVENT THAT THE APPLIED SEEDING FAILS TO TAKE HOLD,
BLANKET MATTING SHALL BE PLACED IN APPROPRIATE AREAS DEEMED
NECESSARY BY THE ENGINEER OR EROSION CONTROL INSPECTOR.
SEQUENCE OF CONSTRUCTION
AFTER OBTAINING ALL REQUIRED PERMITS THE CONTRACTOR SHALL COORDINATE A
PRE -CONSTRUCTION MEETING, ALLOWING 72 HOURS FOR ITS COORDINATION.
1. PHASE 1
1.1. PRIOR TO ANY LAND DISTURBANCE, CONTRACTOR TO HAVE SURVEYOR
FLAG PHASE 1 CLEARING LIMITS. NO CLEARING OR GRADING IS ALLOWED
OUTSIDE OF PHASE 1 LIMITS UNTIL THE PHASE IS COMPLETE.
1.2. INSTALL CONSTRUCTION ENTRANCE AT SITE ENTRANCE. SHOULD THE
TEMPORARY CONSTRUCTION ENTRANCE NOT BE MAINTAINED PROPERLY
OR AN EXCESSIVE AMOUNT OF SOIL FOUND TRACKED ONTO THE PUBLIC
ROADWAY, THEN A PAVED CONSTRUCTION ENTRANCE, WATER TANKER
TRUCK WITH TWO (2) PRESSURE WASHERS AND A SETTLING AREA MAY
BE REQUIRED BY THE EROSION AND SEDIMENT CONTROL PROGRAM
ADMINISTRATOR.
1.3. CLEARING AND GRUBBING SHALL FIRST BE LIMITED TO THAT
NECESSARY TO INSTALL SILT FENCE AND OTHER PERIMETER CONTROLS.
PERIMETER CONTROLS MUST BE MADE FUNCTIONAL PRIOR TO ANY
UPSLOPE LAND DISTURBANCE THAT TAKES PLACE.
1.4. SILT FENCE REQUIRES "J-HOOKS" AT LEAST EVERY 100 FEET WHERE
SILT FENCE IS NOT NEAR PARALLEL TO EXISTING SLOPE. CONTRACTOR
TO INSTALL AS NEEDED.
1.5. INSTALL MUD TRAP.
1.6. CONTRACTOR TO CONSTRUCT DIVERSION DIKES (DD) TO DIRECT RUNOFF
TO THE MUD TRAP.
1.7. ONCE ALL OF THE PHASE 1 CONTROLS ARE INSTALLED, AND PRIOR TO
ADDITIONAL CLEARING AND GRUBBING, THE CONTRACTOR SHALL
COORDINATE INSPECTIONS, AS REQUIRED BY THE COUNTY OF
ALBEMARLE.
2. PHASE 2
2.1. UPON APPROVAL OF E&S CONTROL MEASURES BY COUNTY INSPECTOR,
BEGIN CLEARING AND GRADING OF THE PROJECT AREA. THE LAND
DISTURBANCE SHALL BE RESTRICTED TO THE LIMITS OF DISTURBANCE
SHOWN IN THE APPROVED EROSION CONTROL PLANS.
2.2. CONTRACTOR TO BRING SITE UP TO GRADE AS SHOWN ON THE PHASE
2 EROSION CONTROL PLAN. MIUD TRAP MAY BE REMOVED IF DEEMED
APPROPRIATE BY THE COUNTY INSPECTOR. DENUDED AREAS SHALL
DRAIN TO AN APPROVED EROSION CONTROL MEASURE AT ALL TIMES
DURING CONSTRUCTION. ALL PERIMETER CONTROLS SHOULD BE
MAINTAINED UNTIL SITE IS UP TO GRADE AND AREA HAS ACHIEVED
TEMPORARY STABILIZATION.
2.3. DIVERSION DIKES (DD) SHOULD BE MAINTAINED TO DIVERT WATER TO
MUD TRAP AS SHOWN ON PHASE 1 PLAN.
2.4. STOCKPILE TOPSOIL WITHIN AN AREA ON THE PROPERTY AT A
LOCATION APPROVED BY ALBEMARLE COUNTY COMMUNITY
DEVELOPMENT. INSTALL SILT FENCE AT THE PERIMETER OF
STOCKPILE(S).
2.5. PERMANENT SOIL STABILIZATION SHALL BE APPLIED TO ALL 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. LIME, FERTILIZE
AND APPLY TEMPORARY OR PERMANENT SEEDING TO ALL DENUDED
AREAS IMMEDIATELY AFTER ACHIEVING FINAL GRADES. ALL PERMANENT
SLOPES STEEPER THAN 3:1 SHALL RECEIVE STABILIZATION WITH
LANDSCAPING VEGETATION HARDIER THAN GRASS, WHICH WILL NOT
REQUIRE MOWING.
2.6. REPAIR SILT FENCE WHERE NECESSARY.
2.7. CONTRACTOR TO PROCEED WITH CONSTRUCTION OF TOWNHOUSE UNITS
AND SHALL COORDINATE INSPECTIONS, AS REQUIRED BY THE
ALBEMARLE COUNTY SERVICE AUTHORITY.
2.8. REVISIT PERIMETER CONTROLS, CHECK AND REINFORCE SILT FENCE AS
NEEDED. ENSURE NO WASH -AROUND IS OCCURRING NEAR TOPSOIL
STOCKPILE.
2.9. PERMANENT SOIL STABILIZATION SHALL BE APPLIED TO ALL 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. LIME, FERTILIZE
AND APPLY TEMPORARY OR PERMANENT SEEDING TO ALL DENUDED
AREAS IMMEDIATELY AFTER ACHIEVING FINAL GRADES. ALL PERMANENT
SLOPES STEEPER THAN 3:1 SHALL RECEIVE STABILIZATION WITH
LANDSCAPING VEGETATION HARDIER THAN GRASS, WHICH WILL NOT
REQUIRE MOWING.
EROSION AND SEDIMENT CONTROL MINIMUM STANDARDS
4. PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO
DENUDED AREAS WITHIN SEVEN DAYS AFTER FINAL GRADE IS REACHED ON
ANY PORTION OF THE SITE. TEMPORARY SOIL STABILIZATION SHALL BE
APPLIED WITHIN SEVEN DAYS TO DENUDED AREAS THAT MAY NOT BE AT
FINAL GRADE BUT WILL REMAIN DORMANT FOR LONGER THAN 14 DAYS.
PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE
LEFT DORMANT FOR MORE THAN ONE YEAR
4.1. CONTRACTOR SHALL ESTABLISH A STABILIZED SITE, AND NOT ALLOW
ANY SEDIMENT TO EXIT THE PROJECT LIMITS.
5. 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.
5.1. CONTRACTOR TO PROTECT STOCKPILE AREAS WITH SILT FENCE.
6. 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.
6.1. CONTRACTOR SHALL ESTABLISH A VEGETATIVE COVER ON ALL DENUDED
AREAS.
7. MUD TRAP, DIVERSION 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.
7.1. CONTRACTOR SHALL ESTABLISH THE PERIMETER CONTROLS OF SUPER
SILT FENCE AS THE FIRST STEP OF THE LANDS DISTURBANCE FOR THIS
PROJECT.
8. STABILIZATION MEASURES SHALL BE APPLIED TO EARTHEN STRUCTURES
SUCH AS DAMS, DIKES AND DIVERSIONS IMMEDIATELY AFTER INSTALLATION.
8.1. CONTRACTOR SHALL INSPECT EROSION CONTROL MEASURES AFTER
EACH RAINFALL EVENT.
9. SEDIMENT TRAPS AND SEDIMENT BASINS SHALL BE DESIGNED AND
CONSTRUCTED BASED UPON THE TOTAL DRAINAGE AREA TO BE SERVED BY
THE TRAP OR BASIN.
9.1. 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.
9.2. 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.
10. 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.THERE ARE NO PROPOSED CUT OR FILL SLOPES.
HOWEVER, THE CONTRACTOR IS TO RESTORE THE PROJECT AREA TO
EXISTING GRADE. IF THE AREAS WITH NATURALLY STEEP SLOPES ARE FOUND
TO BE ERODING EXCESSIVELY AFTER ONE YEAR, CONTRACTOR IS TO PROVIDE
ADDITIONAL SLOPE STABILIZING MEASURES UNTIL THE PROBLEM IS
CORRECTED.
11. CONCENTRATED RUNOFF SHALL NOT FLOW DOWN CUT OR FILL SLOPES
UNLESS CONTAINED WITHIN AN ADEQUATE TEMPORARY OR PERMANENT
CHANNEL, FLUME OR SLOPE DRAIN STRUCTURE.MAXIMIZE SHEETFLOW AND
GROUNDWATER INFILTRATION
12. WHENEVER WATER SEEPS FROM A SLOPE FACE, ADEQUATE DRAINAGE OR
OTHER PROTECTION SHALL BE PROVIDED.CONTRACTOR TO NOTIFY ENGINEER
AND COUNTY EROSION CONTROL INSPECTOR.
13. 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.THERE ARE NO STORM SEWER
INLETS PROPOSED.
14. 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.THERE ARE
NO STORMWATER CONVEYANCE CHANNELS OR PIPES PROPOSED.
15. 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. NON -ERODIBLE MATERIAL SHALL BE USED FOR THE
CONSTRUCTION OF CAUSEWAYS AND COFFERDAMS. EARTHEN FILL MAY BE
USED FOR THESE STRUCTURES IF ARMORED BY NON -ERODIBLE COVER
MATERIALS.NO STREAM CROSSINGS ARE PROPOSED.
16. 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 NON -ERODIBLE MATERIAL SHALL BE
PROVIDED.
17. ALL APPLICABLE FEDERAL, STATE AND LOCAL REQUIREMENTS PERTAINING TO
WORKING IN OR CROSSING LIVE WATERCOURSES SHALL BE MET.CONTRACTOR
SHALL FOLLOW FOLLOW ALL APPLICABLE FEDERAL, STATE AND LOCAL
REQUIREMENTS FOR STREAM CROSSINGS.
18. THE BED AND BANKS OF A WATERCOURSE SHALL BE STABILIZED
IMMEDIATELY AFTER WORK IN THE WATERCOURSE IS COMPLETED.
19. UNDERGROUND UTILITY LINES SHALL BE INSTALLED IN ACCORDANCE WITH
THE FOLLOWING STANDARDS IN ADDITION TO OTHER APPLICABLE CRITERIA:
19.1. NO MORE THAN 500 LINEAR FEET OF TRENCH MAY BE OPENED AT ONE
TIME.
19.2. EXCAVATED MATERIAL SHALL BE PLACED ON THE UPHILL SIDE OF
TRENCHES.
19.3. 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.
19.4. MATERIAL USED FOR BACKFILLING TRENCHES SHALL BE PROPERLY
COMPACTED IN ORDER TO MINIMIZE EROSION AND PROMOTE
STABILIZATION.
19.5. RE -STABILIZATION SHALL BE ACCOMPLISHED IN ACCORDANCE WITH THIS
CHAPTER.
19.6. APPLICABLE SAFETY REQUIREMENTS SHALL BE COMPLIED
WITH.CONTRACTOR TO ADHERE TO THE APPLICABLE STANDARD FOR
PRIVATE AND PUBLIC UTILITY INSTALLATION.
20. 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. CONTRACTOR
SHALL MAKE PROVISIONS TO KEEP ADJACENT ROADS CLEAN FROM SOIL
BUILD-UP.
21. 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 VESCP AUTHORITY. TRAPPED SEDIMENT AND THE
DISTURBED SOIL AREAS RESULTING FROM THE DISPOSITION OF TEMPORARY
MEASURES SHALL BE PERMANENTLY STABILIZED TO PREVENT FURTHER
EROSION AND SEDI MEN TATION.CONTRACTOR SHALL STABILIZE SITE, AND
OBTAIN INSPECTOR APPROVAL PRIOR TO REMOVING EC MEASURES. UPON
APPROVAL OF THE ENVIRONMENTAL INSPECTOR, INSTALL INFILTRATION AREAS
AND CONNECT ROOF DRAINS.
22. 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 FOLLOWING STANDARDS AND CRITERIA.
STREAM RESTORATION AND RELOCATION PROJECTS THAT INCORPORATE
NATURAL CHANNEL DESIGN CONCEPTS ARE NOT MAN-MADE CHANNELS AND
SHALL BE EXEMPT FROM ANY FLOW RATE CAPACITY AND VELOCITY
REQUIREMENTS FOR NATURAL OR MAN-MADE CHANNELS:THIS PROJECT DOES
NOT INCLUDE ANY ADDITIONAL IMPERVIOUS SURFACES AND THE PROJECT
AREA WILL BE RESTORED TO ITS EXISTING CONIDTIONS. THEREFORE WILL NOT
PRODUCE ANY ADDITIONAL STORMWATER RUNOFF.
22.1. CONCENTRATED STORMWATER RUNOFF LEAVING A DEVELOPMENT SITE
SHALL BE DISCHARGED DIRECTLY INTO AN ADEQUATE NATURAL OR
MAN-MADE RECEIVING CHANNEL, PIPE OR STORM SEWER SYSTEM. FOR
THOSE SITES WHERE RUNOFF IS DISCHARGED INTO A PIPE OR PIPE
SYSTEM, DOWNSTREAM STABILITY ANALYSES AT THE OUTFALL OF THE
PIPE OR PIPE SYSTEM SHALL BE PERFORMED.
22.2. ADEQUACY OF ALL CHANNELS AND PIPES SHALL BE VERIFIED USING
THE VSMP CHANNEL PROTECTION CRITERIA. STORMWATER DISCHARGES
ARE CLASSIFIED INTO ONE OF THREE TYPES OF CHANNEL.
(1) "MANMADE STORMWATER CONVEYANCE SYSTEM" MEANS A PIPE,
DITCH, VEGETATED SWALE, OR OTHER STORMWATER CONVEYANCE
SYSTEM CONSTRUCTED BY MAN EXCEPT FOR RESTORED STORMWATER
CONVEYANCE SYSTEMS OR,
(A) THE MANMADE STORMWATER CONVEYANCE SYSTEM SHALL CONVEY
THE POST -DEVELOPMENT PEAK FLOW RATE FROM THE TWO-YEAR
EVENT WITHOUT CAUSING EROSION OF THE SYSTEM DETENTION OF
THE STORMWATER OR DOWNSTREAM IMPROVEMENTS MAY BE
INCORPORATED INTO THE APPROVED LAND -DISTURBING ACTIVITY TO
MEET THIS CRITERIA AT THE DISCRETION OF THE STORMWATER
PROGRAM ADMINISTRATIVE AUTHORITY.
(B) THE PEAK DISCHARGE REQUIREMENTS FOR CONCENTRATED
STORMWATER FLOW TO NATURAL STORMWATER CONVEYANCE
SYSTEMS SHALL BE MET.
QDEVELOPED <= I.F. * (QPRE-DEV. * RVPRE-DEV.) /
RVDEVELOPED
UNDER NO CONDITION SHALL QDEVELOPED > Q PRE-DEV.
NOR SHALL QDEVELOPED BE REQUIRED TO BE LESS THAN THAT
QFOREST * RVPRE-DEV.)/RVDEVELOPED
OR IN ACCORDANCE WITH ANOTHER METHODOLOGY THAT IS
DEMONSTRATED BY THE VSMP AUTHORITY TO ACHIEVE EQUIVALENT
RESULTS AND IS APPROVED BY THE BOARD.
(2) "NATURAL STORMWATER CONVEYANCE SYSTEM" MEANS THE MAIN
CHANNEL OF A NATURAL STREAM AND THE FLOOD -PRONE AREA
ADJACENT TO THE MAIN CHANNEL OR,
(3) "RESTORED STORMWATER CONVEYANCE SYSTEM" MEANS A
STORMWATER CONVEYANCE SYSTEM THAT HAS BEEN DESIGNED AND
CONSTRUCTED USING NATURAL CHANNEL DESIGN CONCEPTS. RESTORED
STORMWATER CONVEYANCE SYSTEMS INCLUDE THE MAIN CHANNEL AND
THE FLOOD -PRONE AREA ADJACENT TO THE MAIN CHANNEL.
(A) THE DEVELOPMENT SHALL BE CONSISTENT, IN COMBINATION WITH
OTHER STORMWATER RUNOFF WITH THE DESIGN PARAMETERS OF
THE RESTORED STORMWATER CONVEYANCE SYSTEM THAT IS
FUNCTIONING IN ACCORDANCE WITH THE DESIGN OBJECTIVES.
(B) THE PEAK DISCHARGE REQUIREMENTS FOR CONCENTRATED
STORMWATER FLOW TO NATURAL STORMWATER CONVEYANCE
SYSTEMS SHALL BE MET. SEE 19(B)(1)(B).
GENERAL EROSION AND SEDIMENT CONTROL NOTES
WORK AREA PROTECTION & MAINTENANCE
1. ALL FENCES REQUIRED TO BE REMOVED OR DISTURBED BY CONSTRUCTION
SHALL BE SALVAGED, STORED, PROTECTED AND RE -INSTALLED BY
CONTRACTOR AT THE DIRECTION OF AND LOCATION DESIGNATED BY THE
PROJECT MANAGER. IF SUCH FENCE MATERIAL CANNOT BE REUSED DUE TO
DAMAGE CAUSED BY CONTRACTOR, CONTRACTOR SHALL INSTALL NEW FENCE
OF THE SAME TYPE OF MATERIAL. TEMPORARY FENCING REQUIRED BY
PRIVATE PROPERTY OWNERS SHALL BE PROVIDED BY CONTRACTOR.
CONTRACTOR IS ADVISED TO CONTACT PROPERTY OWNERS AT LEAST
FORTY-EIGHT (48) HOURS IN ADVANCE OF REMOVING ANY FENCE IN ORDER
TO COORDINATE RELOCATION AND/OR PROTECTION OF ANY ANIMALS AND TO
ESTABLISH AND CONFIRM WITH THE OWNER THE PRE -CONSTRUCTION
CONDITION OF ANY FENCE TO BE REMOVED, DISTURBED OR REPLACED.
2. CONTRACTOR IS PERMITTED TO WORK IN THE PUBLIC RIGHT-OF-WAY
(FOLLOWING ISSUANCE OF VDOT APPROVAL) AND ANY TEMPORARY OR
PERMANENT EASEMENT (FOLLOWING VERIFICATION OF EXISTENCE OF
EASEMENT) SHOWN ON THE PLANS. HOWEVER, CONTRACTOR SHALL NOTIFY
PROPERTY OWNER(S) FORTY-EIGHT (48) HOURS PRIOR TO WORKING ON ANY
PRIVATE PROPERTY TO GAIN AND COORDINATE ACCESS AND TO DETERMINE A
STORAGE AREA FOR MATERIALS IF NEEDED. COORDINATION OF ACCESS TO
PUBLIC RIGHT-OF-WAY AND STORAGE OF MATERIALS THEREON SHALL BE
COORDINATED WITH VDOT AND THE PROJECT MANAGER. CONTRACTOR'S
FAILURE TO SO NOTIFY AND COORDINATE WITH PROPERTY OWNERS AND/OR
THE PROJECT MANAGER MAY RESULT IN DELAYS.
3. CONTRACTOR SHALL, AT HIS EXPENSE, MAINTAIN THE WORK SITE IN A CLEAN
AND ORDERLY APPEARANCE AT ALL TIMES. ALL DEBRIS AND SURPLUS
MATERIAL COLLECTED SHALL BE DISPOSED OF OFF THE WORK SITE BY
CONTRACTOR, AT HIS EXPENSE.
4. EXISTING LAWNS, TREES, SHRUBS, FENCES, UTILITIES, CULVERTS, WALLS,
WALKS, DRIVEWAYS, POLES, SIGNS, RIGHT-OF-WAY MONUMENTS, MAILBOXES
AND THE LIKE SHALL BE PROTECTED FROM DAMAGE DURING THE WORK. ANY
DAMAGE CAUSED TO SUCH ITEMS SHALL BE REPAIRED OR REPLACED BY
CONTRACTOR AT NO ADDITIONAL COST. PROPERTY PINS DISTURBED BY
CONTRACTOR THAT ARE NOT SHOWN ON THE PLANS TO BE DISTURBED SHALL
BE RESTORED BY A LICENSED SURVEYOR AT CONTRACTOR'S EXPENSE.
5. CONTRACTOR SHALL EMPLOY EROSION CONTROL DEVICES AND METHODS AS
REQUIRED TO MEET THE REQUIREMENTS AND INTENT OF THE LOCAL EROSION
CONTROL ORDINANCE. CONTRACTOR SHALL PROVIDE THE NECESSARY
DIVERSION DITCHES, DIKES OR TEMPORARY CULVERTS REQUIRED TO PREVENT
MUD AND DEBRIS FROM BEING WASHED ONTO THE STREETS OR PROPERTY.
CONTRACTOR'S VEHICLES SHALL BE KEPT CLEAN TO PREVENT MUD OR DUST
FROM BEING DEPOSITED ON STREETS. NO AREA SHALL BE LEFT DENUDED
FOR MORE THAN SEVEN (7) CALENDAR DAYS
VEGETATION
1. PRIOR TO REMOVING ANY VEGETATION, CONTRACTOR SHALL MEET WITH THE
PROPERTY OWNERS AND THE PROJECT MANAGER TO REVIEW THE LIMITS OF
CONSTRUCTION AND OBTAIN PERMISSION TO REMOVE VEGETATION REQUIRED
TO DO THE WORK.
2. TREE AND PLANT ROOTS OR BRANCHES THAT MAY INTERFERE WITH THE
WORK SHALL BE TRIMMED OR CUT ONLY WITH THE APPROVAL OF THE
PROJECT MANAGER. ANY TREES OR PLANTS WHICH ARE SHOWN TO REMAIN
THAT DO NOT INTERFERE WITH THE WORK, BUT ARE DAMAGED BY
CONTRACTOR OR HIS SUBCONTRACTORS, SHALL BE REPAIRED OR REPLACED
BY CONTRACTOR AT NO ADDITIONAL COST.
3. CONTRACTOR SHALL CLEAN UP, RESTORE, SEED AND MAINTAIN ALL
DISTURBED AREAS IMMEDIATELY UPON COMPLETION OF WORK ON EACH SITE.
TOPSOIL, SEED, FERTILIZER AND MULCH SHALL BE PLACED IN ACCORDANCE
WITH ESC AUTHORITY STANDARDS ON ALL DISTURBED AREAS. A PERMANENT
STAND OF GRASS ADEQUATE TO PREVENT EROSION SHALL BE ESTABLISHED
PRIOR TO FINAL ACCEPTANCE.
4. THE ACT OF RESEEDING SHALL NOT QUALIFY AS "STABILIZED". THE
CONTRACTOR SHALL BE RESPONSIBLE TO ESTABLISH VEGETATION, NOT SIMPLY
APPLY SEED AND MATERIALS.
GENERAL CONSTRUCTION NOTES
APPLIED AT 80 LBS/100SF. ALTERNATIVES ARE SUBJECT TO BE APPROVED
BY THE COUNTY EROSION CONTROL INSPECTOR.
14
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
CONTRACTOR'S RECORD DRAWING REQUIREMENTS
THE FINAL INSPECTION.
CONTRACTOR SHALL KEEP ACCURATE RECORDS OF ANY CHANGES
2.
ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CONSTRUCTED
SUBSTITUTIONS, ALTERATIONS, VARIATIONS OR UNUSUAL CONDITIONS ENCOUNTERED OR
AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS
IMPLEMENTED WHILE ENGAGED ON THIS PROJECT. THESE RECORDS SHALL BE IN THE FORM
OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA
OF 'REDLINES". 'REDLINES" SHALL REFER TO THE CONTRACTOR'S HAND ANNOTATIONS USING
REGULATIONS VR 625-02-00 EROSION AND SEDIMENT CONTROL
RED COLORED PEN/PENCIL TO DEPICT ACTUAL CHANGE, SUBSTITUTION, OR CONDITION.
REGULATIONS.
3.
ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR
PRIOR TO CONTRACTOR REQUESTING PARTIAL OR FULL PAYMENT, CONTRACTOR SHALL
TO OR AS THE FIRST STEP IN CLEARING.
PROVIDE THE OWNER WITH AN UP-TO-DATE CONTRACTOR'S RECORD
4.
A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL
DRAWING. SPECIFICALLY, THIS SET OF PLANS, ISSUED TO THE CONTRACTOR AS FINAL
BE MAINTAINED N THE SITE ALL TIMES.
BE
CONSTRUCTION DRAWINGS, SHALL BEAR THE MARKINGS LISTED BELOW AS WELL AS
THE CONTRACTOR (AGENT OR SUPERINTENDENT) SIGNATURE AND CERTIFICATION BELOW:
5.
PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN
INDICATED ON THESE PLANS (INCLUDING, BUT NOT LIMITED TO, OFF -SITE
1. REDLINES SHOULD ALWAYS BE ACCURATE NEAT, LEGIBLE, DATED AND REASONABLY
BORROW OR WASTE AREAS),THE CONTRACTOR SHALL SUBMIT A
SCALED.
SUPPLEMENTARY EROSION CONTROL PLAN TO THE OWNER FOR REVIEW AND
2. ADD LARGE RED LETTERS TO TITLE SHEET WITH 'CONTRACTOR'S RECORD DRAWING'
APPROVAL BY THE PLAN APPROVING AUTHORITY.
INCLUDING CONTRACTOR'S NAME, DATE, AND OTHER RELEVANT INFORMATION
6.
THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL
EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND
3. CONTRACTOR'S REPRESENTATIVE OR SUPERINTENDENT SHALL INITIAL EACH SHEET. IF A
SEDIMENTATION AS DETERMINED BY THE PLAN APPROVING AUTHORITY.
SHEET HAS NOT BEEN CHANGED AT ALL OR NO MARK HAS BEEN ADDED, LABEL THE
7.
ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL
SHEET ONLY 'NO CHANGES'
MEASURES AT ALL TIMES DURING LAND DISTURBING ACTIVITIES AND DURING
4, IF A SHEET HAS BEEN CHANGED OR MODIFICATIONS HAVE BEEN ADDED, LABEL IT
SITE DEVELOPMENT UNTIL FINAL STABILIZATION IS ACHIEVED.
'REVISED'
8.
DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN
APPROVED FILTERING DEVICE.
5. USE WRITTEN EXPLANATION TO DESCRIBE CHANGES. REFER TO SPECIFIC ACTIONS
9.
THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES
INSTEAD OF REFERENCING CHANGE ORDER NUMBERS OR RELATED DOCUMENTS
PERIODICALLY AND AFTER EACH RUNOFF PRODUCING RAINFALL EVENT. ANY
6. USE CLEAR LETTERING
NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE EFFECTIVENESS OF THE
EROSION CONTROL DEVICES SHALL BE MADE IMMEDIATELY.
7. NEVER REMOVE OLD VALUES OR DETAILS, JUST REDLINE OR "X" THROUGH THEM. IF
10.
ALL FILL MATERIAL TO BE TAKEN FROM AN APPROVED, DESIGNATED BORROW
THERE IS NO ROOM FOR THE NEW VALUE, YOU CAN GO TO THE SIDE AND REDLINE THE
AREA.
REPLACEMENT VALUE.
11.
ALL WASTE MATERIALS SHALL BE TAKEN TO AN APPROVED WASTE AREA.
8. PROVIDE THE REDLINE DETAILS OF CHANGES OR ADDITIONAL INFORMATION, INCLUDING
EARTH FILL SHALL BE INERT MATERIALS ONLY, FREE OF ROOTS, STUMPS,
BUT NOT LIMITED TO FABRICATION, ERECTION, INSTALLATION, LOCATION, SIZING,
WOOD, RUBBISH, AND OTHER DEBRIS.
MATERIAL, DIMENSION, ADDITIONS, RELOCATIONS, SUBSTITUTIONS, ETC
12.
BORROW OR WASTE AREAS ARE TO BE RECLAIMED WITHIN 7 DAYS OF
9. BE SPECIFIC WHEN MAKING NOTES TO UNDERGROUND UTILITIES, SHOWING EXACT
COMPLETION PER ZONING ORDINANCE SECTION 5.1.28.
LOCATION, DEPTH, AND MATERIAL USED (EXAMPLE: SEWER LATERALS)
13.
ALL INERT MATERIALS SHALL BE TRANSPORTED IN COMPLIANCE WITH
10. PROVIDE ALL NECESSARY INFORMATION OF CONTRACTOR'S DESIGNED SYSTEMS OR
SECTION 13-301 OF THE CODE OF ALBEMARLE.
SUBSTITUTIONS
14.
BORROW, FILL OR WASTE ACTIVITY INVOLVING INDUSTRIAL -TYPE POWER
11. CROSS OUT ANY PLAN REFERENCE TO "APPROVED EQUAL" AND REPLACE WITH ANY
EQUIPMENT SHALL BE LIMITED TO THE HOURS OF 7:00 AM TO 9:00 PM.
SPECIFIC INFORMATION OF VARIANCE USED DURING THE CONSTRUCTION PROCESS
15.
BORROW, FILL OR WASTE ACTIVITY SHALL BE CONDUCTED IN A SAFE
12. ANY CHANGES IN INVERT ELEVATIONS, GRADE MODIFICATIONS, SLOPES, AND RELATED
MANNER THAT MAINTAINS LATERAL SUPPORT, OR ORDER TO MINIMIZE ANY
INFORMATION ON PIPING UTILITIES, EARTHWORK, ETC. SHALL BE REDLINED.
HAZARD TO PERSONS, PHYSICAL DAMAGE TO ADJACENT LAND AND
IMPROVEMENTS, AND DAMAGE TO ANY PUBLIC STREET BECAUSE OF SLIDES,
13. RECORD ALL UNEXPECTED OBSTRUCTIONS, COMPLICATING FACTORS, UNSUITABLE
SINKING, OR COLLAPSE.
CONDITIONS FOUND IN THE PROJECT AREA INCLUDING ROCK, UNUSUAL TOPSOIL
16.
THE DEVELOPER SHALL RESERVE THE RIGHT TO INSTALL, MAINTAIN, REMOVE
CONDITIONS, BURIED DEBRIS, ETC.
OR CONVERT TO PERMANENT STORMWATER MANAGEMENT FACILITIES, WHERE
14. ATTACH OR INCLUDE ANY SHOW DRAWINGS OR SUPPLEMENTAL INFORMATION TO THE
APPLICABLE, ALL EROSION CONTROL MEASURES REQUIRED BY THIS PLAN
CONTRACTOR'S RECORD DRAWING
REGARDLESS OF THE SALE OF ANY LOT, UNIT, BUILDING OR OTHER PORTION
15. CHANGES MADE AS A RESULT OF ANY REGULATORY OR OWNER INSPECTION PROCESS
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
CERTIFICATION STATEMENT:
TO FEBRUARY TO CONSIST A 50/50 MIX OF ANNUAL RYEGRASS AND
CEREAL WINTER RYE, OR IN MARCH AND APRIL TO CONSIST OF ANNUAL
THIS HAND -MARKED SET OF DRAWINGS HAS BEEN REDLINED" TO PROVIDE ACCURATE
RYE, OR MAY THROUGH AUGUST TO CONSIST OF GERMAN MILLET. STRAW
DETAILED RECORD OF ANY SUBSTANTIVE CHANGES TO THE APPROVED DESIGN
MULCH IS TO BE APPLIED AT 80 LBS/100SF. ALTERNATIVES ARE SUBJECT
DRAWINGS. ANY ITEM NOT 'REDLINED" ON THIS PLAN SET OR SUBSEQUENT PAGES
"CONSTRUCTED
TO BE APPROVED BY THE COUNTY EROSION CONTROL INSPECTOR.
SHOULD BE CONSIDERED TO BE IN ACCORDANCE WITH THE DESIGN AS
SHOWN".
18.
PERMANENT STABILIZATION SHALL BE LIME AND FERTILIZER, PERMANENT
SEEDING, AND MULCH. AGRICULTURAL GRADE LIMESTONE SHALL BE APPLIED
AT 90 LBS/1000SF. INCORPORATED INTO THE TOP 4-6 INCHES OF SOIL.
FERTILIZER SHALL BE APPLIED AT 1000 LBS/ACRE AND CONSIST OF A
NAME TITLE DATE
10-20-10 NUTRIENT MIX. PERMANENT SEEDING SHALL BE APPLIED AT 180
LBS/ACRE AND CONSIST OF 95% KENTUCKY 31 OR TALL FESCUE AND 0-5%
PERENNIAL RYEGRASS OR KENTUCKY BLUEGRASS. STRAW MULCH IS TO BE
FOR:
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TEMPORARY SEEDING MIXTURES
Ts FOR THE PIEDMONT AREA
TABLE 26
TEMPORARY SEEDINGS BY RATES, DEPTHS, AND DATES
Seeding Rate
Planting
depth 36
Seeding37 and SeedingDate
zones 1
38
Species3/
Per
Lbs/1000
7a and 7b
6b
6a and 5b
acre
Sq. ft
(Inches)
2/1—
5/1—
8/15—
3/1—
5/1—
8/15—
3/15—
6/1—
8/1-
4/30
1 8/14
11/30
4/30
8/14
11/15
5/31
7/31
10/31
Choose one:
BY
BY
BY
Barley
2.5 bu.
2.80
1-2
X
—
10/15
X
—
10/15
X
—
10/1
Oats
3 bu.
2.21
1-2
X
—
—
X
—
—
X
—
—
Rye39
2.5 bu.
3.22
1-2
X
—
X
X
—
X
X
—
X
Barley or
Rye Plus
150 lbs.
3.45
1
X
X
10/15
X
X
10/15
X
X
10/1
Foxtail
X
X
X
X
X
X
X
X
X
millet40
Weeping
4 Its.
0.09
1/4-1/2
—
X
—
—
X
—
—
X
—
lovegross4l
Annual
ryegrasS
50 Ids.
1.15
1/4-1/2
X
—
11/1
X
—
11/1
X
—
8/15
M1llet42
50 Ids.
1.15
1/2
—
X
—
—
X
—
—
X
—
3_BZ Applicable on slopes of 3:1 or flatter
371 Refer to figure A — Adopted from USDA, AIRS Miscellaneous Publication #1475, January 1990
38Between fall and spring seeding dates, use mulch only if ground is frozen and reseed when
thawed
39 May be used as a nurse crop for late fall/early winter permanent seedings, add 56 Ibs/ac.
to the permanent seeding mixture
40 Maryland State Highway Administration Temporary Seed Mix
May be used as a nurse crop for mid —summer permanent seedings. Add 2 Ibs/ac
41Z to permanent seed mix.
May be used as a nurse crop for mid —summer permanent seedings. Add 10 Ibs/ac.
42 to the permanent seeding mix.
INFORMATION FROM TABLE 3.32-C OF THE VA ESC HANDBOOK
IS PROVIDED BELOW FOR SEEDING SELECTION
TOTAL LIES. PER ACRE
MINIMUM CARE LAWN 200-250 LBS
—COMMERCIAL OR RESIDENTIAL
90-100%
KENTUCKY 31 OR TURF —TYPE TALL FESCUE 0-10%
IMPROVED PERENNIAL RYEGRASS 0-10%
KENTUCKY BLUEGRASS
GENERAL SLOPE (3:1 OR LESS) 128 LBS
KENTUCKY 31 FESCUE 2 LBS
RED TOP GRASS 20 LBS
SAEASONAL NURSE CROP **
** USE SEASONAL NURSE CROP IN ACCORDANCE WITH SEEDING DATES AS STATED BELOW:
MARCH, APRIL THROUGH MAY 15TH ANNUAL RYE
MAY 16TH THROUGH AUGUST 15TH FOXTAIL MILLET
AUGUST 16TH THROUGH SEPTEMBER, OCTOBER ANNUAL RYE
NOVEMBER THROUGH FEBRUARY WINTER RYE
FERTILIZER (10-20-10 OR EQ) SHALL BE APPLIED AT THE RATE OF 1000 LBS/ ACRE.
AGRICULTURAL LIME SHALL BE APPLIED TO SEEDBEDS AT TTHE RATE OF 90 LBS/ 1000 SQ. FT.
SUGGESTED TEMPORARY SEEDING MIXTURE
FERTILIZER: 10-20-10 1,000 LBS/ACRE
SEPTEMBER— FEBRUARY 15: 50% ANNUAL RYE & 50% WINTER RYE 100 LBS/ACRE
FEBRUARY 16—APRIL 30: ANNUAL RYE 100 LBS/ACRE
MAY —AUGUST: GERMAN MILLET 50 LBS/ACRE
OTHER OPTIONS EXIST, SEE VA EROSION AND SEDIMENT CONTROL HANDBOOK.
SUGGESTED PERMANENT SEEDING MIXTURE
LIME: 2 TONS/ACRE
FERTILIZER: 10-20-10 1,000 LBS/ACRE
MARCH —MAY 15: KENTUCKY 31 FESCUE 200 LBS/ACRE, ANNUAL RYE 20 LBS/ACRE
MAY 16—AUGUST 15: KENTUCKY 31 FESCUE 200 LBS/ACRE, FOXTAIL MILLET 20 LBS/ACRE
AUGUST 16—OCTOBER: KENTUCKY 31 FESCUE 200 LBS/ACRE, ANNUAL RYE 20 LBS/ACRE
NOVEMBER—FEBRUARY: KENTUCKY 31 FESCUE 200 LBS/ACRE, WINTER RYE 20 LBS/ACRE
N
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FILE: 16.0098
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PERMANENT SEEDING MIXTURES
Ps FOR THE PIEDMONT AREA
TABLE 25 TOTAL LBS. PER ACRE
MINIMUM CARE LAWN — COMMERCIAL OR RESIDENTIAL 175-200 LBS.
— KENTUCKY 31 OR TURF —TYPE TALL FESCUE %95-100%
— IMPROVED PERENNIAL RYE GRASS 0-5%
— KENTUCKY BLUEGRASS 0-5%
HIGH MAINTENANCE LAWN
200-250 LBS.
— KENTUCKY 31 OR TURF —TYPE TALL FESCUE
100%
GENERAL SLOPE (3:1 OR
LESS)
— KENTUCKY 31 FESCUE
128 LBS.
— RED TOP GRASS
2 LBS.
— SEASONAL NURSE CROP*
20 LBS.
TOTAL 150 LBS.
LOW —MAINTENANCE SLOPE (STEEPER THAN 3:1)
— KENTUCKY 31 FESCUE
108 LBS.
— RED TOP GRASS
2 LBS.
— SEASONAL NURSE CROP*
20 LBS.
— CROWN VETCH**
20 LBS.
TOTAL 150 LBS.
*USE SEASONAL NURSE CROP IN ACCORDANCE WITH
SEEDING DATES AS STATED BELOW:
FEBRUARY 16TH THROUGH APRIL 30TH. . .
. . . . . . . . . ANNUAL RYE
MAY 1ST THROUGH AUGUST 15TH . . . .
. . . . . . . . . . FOXTAIL MILLET
AUGUST 1 6TH THROUGH OCTOBER 31 ST. .
. . . . . . . . . .ANNUAL RYE
NOVEMBER 1ST THROUGH FEBRUARY 15TH
. . . . . . . . . . ANNUAL 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 INNOCULATED.
WEEPING LOVEGRASS MAY BE ADDED
TO ANY SLOPE OR LOW MAINTENANCE MIX DURING
WARMER SEEDING PERIODS; ADD 10-
20 LBS./ACRE IN MIXES.
\Ps PERMANENT SEEDING
FERTILIZATION & MAINTENANCE
TABLE 24
Maintenance Fertilization for Permanent Spacings
Use Soil Test Recommendation or Rates Shown Below
Seeding Mixture
Formulation
Lbs. per
Los. per
Time
Mowing
Acre
1000 sf
Tail fescue makes
10-10-10
500
11.5
Yearly, or as needed
*Not closer than 3"
up 70% or more
or
if occasional mowing
of cover.
30-10-10
400
9.2
fall
is desired.
Spring the year
Do not mow
Crownvetch
following establish —
Service lespedeza
0-20-0
400
9.2
ment and every 4-5
crownvetch
Birdsfoot trefoil
years thereafter.
Not required. not
Fairlyuniform
Fall the year
closer than 4" if
stand of tall
500
11.5
following establish—
occasional mowing is
fescue & service
5-10-10
ment and ever 4-5
Y
desired, and then in
lespedeza, or
years thereafter.
fall after seed has
birdsfoot trefoil.
matured.
Not required. not
weeping love toss
P 9 9
Spring the year
closer than 4" if
& series lespedeza
11.5
following establish—
occasional mowing is
fair) uniform
Y
——
51010
500
ment and every 3-4
desired, and fall
plant distribution
years thereafter.
after sericea has
matured.
September,
Mow no closer than
Red & chewi
20-10-10
250
5.8
30 days later
2" for red fescue
fescue, Kentucky
and Ky bluegrass;
bluegrass: hard
December,
and closer than 3"
fescue mixture:
20-10-10
100
2.3
Y Ma 20—June-30,
for fescue.
if needed.
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Lic. No.
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