HomeMy WebLinkAboutWPO200500055 Plan - Stormwater Stormwater Management Plan 2005-07-12NOTES
CONTROI
ll� a NOTES
OWNER\DEVELOPER. WHITI GABLES CHARLOTTEGENERAL-
SVILLE L.C.
CIO ROBINSON DEV GROUP INC.
1. CONSTRUCTION INSPECTION OF ALL PROPOSED ROADS WILL BE MADE BY THE COUNTY.
3338 HORSESHOE BEND ROAD
THE CONTRACTOR MUST CONTACT THE DEPARTMENT OF ENGINEERING ( 296-5861) 48
1• CHARLOTTESOLLE, VIRGINIA 22901
HOURS IN ADVANCE OF THE START OF CONSTRUCTION.
TELEPHONE: (434) 409-5275
2. PERMANENT OR TEMPORARY SOIL STABILIZA7701V SHALL BE APPLIED TO DENUDED
2 ENGINEER: TIMMONS GROUP
AREAS WITHIN SEVEN (7) DAYS AF7ER FINAL GRADE IS REACHED ON ANY PORTION
711 N. COURTHOUSE ROAD
OF THE SITE,
RICHMOND, VA 23236
TELE. (804) 379-6133
J. TEMPORARY SOIL STABILIZATION SHALL BE APPLIED WITHIN SEVEN (7) DAYS TO
E-MAIL:Scott.Collins@Timmons.com
DENUDED AREAS THAT MAY NOT BE AT FINAL GRADE BUT WILL REMAIN DORMANT
CONTACT: MR. SCOTT COLLINS
FOR LONGER THAN THIRTY (3O) DAYS.
J. TAX MAP NO.: 60-26 & 60-27A
4. DURING CONSTRUCTION OF THE PROJECT, SOIL STOCK PILES SHALL BE STABILIZED
D.B. 2706, PG. 163
OR PROTECTED WITH SEDIMENT TRAPPING MEASURES.
WHITE GABLES CHARLOTTESVILLE L.C.
150 WEST MAIN ST SUITE 1100
5. STABILIZATION MEASURES SHALL BE APPLIED TO EARTHEN STRUCTURES SUCH AS
NORFOLK, VIRGINIA 23510
DAMS, DIKES, AND DIVERSIONS IMMEDIATELY AFTER INSTALLA 770n1.
4. GPIN Na: 06000-0-0-02600
6. EROSION AND SEDIMENT CONTROL DEVICES SHALL BE CONSTRUCTED AND INSTALLED
5. ZONING : CO - COMMERCIAL OFFICE
AS A FIRST STEP IN ANY LAND -DISTURBING ACTIVITY AND SHALL BE MADE
TIMMONS GROUP SHALL NOT HAVE AUTHORITY OVER CONTRACTOR'S WORK,
FUNCTIONAL BEFORE UPSLOPE LAND DISTURBANCE TAKES PLACE.
SAFETY PRECAUTIONS, SCHEDULES OR COMPLIANCE WITH LAWS AND
Z A, PERMANENT VEGETATIVE COVER SHALL BE ESTABLISHED ON DENUDED AREAS
REGULATIONS WE SHALL NOT ASSUME RESPONSIBILITY FOR ANY
NOT OTHERMSEE PERMANENTLY STABILIZED. PERMANENT VEGETATION SHALL NOT
CONSTRUCTION STARTED PRIOR TO PLAN APPROVAL.
BE CONSIDERED ESTABLISHED UNTIL A GROUND COVER IS ACHIEVED THAT, IN THE
OPINION OF THE COUNTY ENGINEER OR HIS DESIGNA TED AGENT, IS UNIFORM,
MATURE ENOUGH 70 SURVIVE AND WILL_ INHIBIT EROSION.
COUNTYNOTES
S. UNDERGROUND UTILITYLINES SHALL BE INSTALLED IN ACCORDANCE WITH THE
ALBEMARLE
FOLLOWNG STANDARDS IN ADDITION TO OTHER APPLICABLE CRITERIA:
FOR EROSION COXT-R-OL
A) NO MORE THAN 500 LINEAR FEET OF TRENCH MAY BE OPENED AT ONE TIME.
B) EXCAVATED MATERIAL SHALL BE PLACED ON THE UPHILL SIDE OF TRENCHES
ES-1: UNLESS OTHERWISE INDICATED, ALL VEGETATIVE AND STRUCTURAL
C) EFFLUENT FROM DEWATERING OPERATIONS SHALL BE FILTERED OR PASSED
EROSION AND SEDIMENT CONTROL PRACTICES WILL BE CONSTRUCTED
THROUGH AN APPROVED SEDIMENT TRAPPING DEVICE, OR BOTH, AND
AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND
DISCHARGED IN A MANNER THAT DOES NOT ADVERSELY AFFECT FLOWING
SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL
STREAMS OR OFF -SITE PROPERTY
HANDBOOK AND VIRGINIA REGULATIONS VR 625-02-00 EROSION AND
D) RE STABILIZATION SHALL BE IN ACCORDANCE WITH THE ABOVE NOTES.
SEDIMENT CONTROL REGULATIONS.
THE PLAN APPROVING AUTHORITY MUST BE N077FIED ONE WEEK
9. ALL APPLICABLE FEDERAL, STATE, AND LOCAL REGULA7IONS PERTAINING TO
ES-2.
PRIOR TO THE PRE -CONSTRUCTION CONFERENCE, ONE WEEK PRIOR TO
WORKING IN OR CROSSING A LIVE WATERCOURSE SHALL BE MET
THE COMMENCEMENT OF LAND DISTURBING ACTIVITY, AND ONE WEEK
10. WHERE CONSTRUCTION VEHICLE ACCESS ROUTES INTERSECT PAVED PUBLIC ROADS,
PRIOR TO THE FINAL INSPECTION.
PROVISIONS' SHALL BE'MADE TO MINIMIZE THE TRANSPORT OF SEDIMENT BY
ES-3: ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED
TRACKING (INTO THE TAVED SURFACE. WHERE SEDIMENT IS TRANSPORTED ONTO
PRIOR TO OR AS THE FIRST STEP IN CLEARING.
A PUBLIC ROAD SURF)CE, THE ROAD SHALL CLEANED THOROUGHLY AT THE
ES-4. A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN
,BE
END OF EACH DAY. SEDIMENT SHALL BE REMOVED FROM THE ROADS BY
SHALL BE MAINTAINED ON THE S17E AT ALL TIMES,
SHOVELING OR SWEEPIIIG AND TRANSPORTED TO A DISPOSAL AREA.
ES-5: PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER
TO,
11. IT SHALL &E THE OWNERS RESPONSIBILITY TO INSPECT EROSION CONTROL DEVICES
THAN INDICATED ON THESE PLANS (INCLUDING BUT NOT LIM17ED
OR WASTE AREAS), THE CONTRACTOR SHALL
PERIODICALLY AND AFER EVERY ERODIBLE RAINFALL. ANY NECESSARY REPAIRS
OFF-S/7E BORROW
SUBMIT A SUPPLEMENTARY EROSION CONTROL PLAN TO THE OWNER
OR CLEAN UP TO MAIATAIN THE EFFECTIVENESS OF THE EROSION CONTROL
FOR REVIEW AND APPROVAL BY THE PLAN APPROVING AUTHORITY.
DEVICES SHALL BE YA)E IMMEDIATELY
ES_ 6.- THE CONTRACTOR /S RESPONSIBLE FOR INSTALLA RON OF ANY
12. ADDITIONAL EROSION CONTROL DEVICES MAY BE REQUIRED BY THE COUNTY
ADD177ONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT
ENGINEER OR HIS DESGNA7EDD AGENT IF DEEMED NECESSARY
EROSION AND SEDIMENTA77ON AS DETERMINED BY THE PLAN
APPROVING AUTHORITY
13. ALL EROSION CONTROLDEWCES SHALL BE IN PLACE AND FUNCTIONAL AT ALL
ES- Z ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT
TIMES AND IF REMOVE) FOR CONSTRUCTION PROGRESS, SHALL 13E REPLACED BY
CONTROL MEASURES AT ALL 77MES DURING LAND DISTURBING
THE CLOSE OF EACH IORKDAY.
ACTIW77ES AND DURING SI7E DEVELOPMENT UNTIL FINAL STABILIZATION
14 FINAL REMOVAL OF ER►SION CONTROL DEVICES SHALL NOT OCCUR UNTIL THE
IS ACHIEVED.
ES-8: DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN
COUNTY ENGINEER OR VS DESIGNATED AGENT DEEMS THE SI7E STABILIZED.
APPROVED WATER FILTERING DEVICE.
15' ALL ENTRANCES EXCEF FOR THE APPROVED CONSTRUCTION ENTRANCE SHALL
ES-9: THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES
BE BLOCKED IN SUCH I MANNER AS TO NOT ALLOW ACCESS TO THE SITE.
PERIODICALLY AND AFTER EACH RUNOFF -PRODUCING RAINFALL EVENT
16. TEMPORARY CONS7RUC'!ON ENTRANCE IS REQUIRED FOR THIS SITE: STANDARD
ANY NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE
& SPEC. J.02 IS ADEQfATE DUE TO THE LACK OF AVAILABLE WATER TO THE S17Le
EFFECTIVENESS OF THE EROSION CONTROL DEVICES SHALL BE MADE
SHOULD THE TEMPORAIY CONSTRUCTION ENTRANCE NOT BE MAINTAINED PROPERLY
IMMEDIATELY,
OR AN EXCESSIVE AMO'INT OF SOIL FOUND TRACKED ONTO THE PUBLIC ROADWAY
THEN A PAVED CONSTRICTION ENTRANCE, WATER TANKER TRUCK WITH 2 PRESSURE
WASHERS AND A SETTLWG AREA MAY BE REQUIRED BY 7-HE EROSION AND SEDIMENT
SOIL DESCRIPTION
CONTROL PROGRAM ADNNISTRATOR.
1®' PER SHALL ERVE THE TO
1.98-CULLEN-LOAM- 2% TO 7% SLOPES THIS DEEP, GENTLY SLOPING, WELL
PERMANER't STRUCTURE ALLHT
CONVERT OTHE
EROSIONS AND SEDIIMEANT CONMOVE TROL MEASURES
DRAINED SOIL IS ON NARROW TO BROAD CONVEX RIDGETOPS. AREAS OF
REQUIRED 13Y THIS PLAN REGARDLESS OF 77-IE SALE OF ANY LOT.
THIS SOIL ARE IRREGULARLY ROUNDED OR OBLONG. THEY RANGE FROM 3
THE SURFACE LAYER OF THE SOIL IS REDDISH
18 SHOULD TEMPORA7'Y TDIMENT STRUCTURES BE CONVERTED TO PERMANENT STORM -
TO 15 OR MORE ACRES
BROWN LOAM ABOUT 8 INCHES THICK. PERMEABILITY AND AVAILABLE
WATER MANAGEMEt T `TRUCTURES THEN THE FOLLOWING SHALL OCCUR:
WATER CAPACITY ARE MODERATE SURFACE RUNOFF IS MEDIUM. THE
A) THE DAM SffALL BE DESIGNED AND CONSTRUCTED PER VIRGINIA DAM SAFETY
HAZARD OF EROSION IS MODERATE: THE SOIL HAS GOOD TILTH.
FREQUIREI VEN75' AND SHALL HAVE A CORE PER COUNTY OF ALBEMARLE
36B HAYESVILLE-LOAM- 2% TO 7% SLOPES THIS SOIL IS DEEP, WELL
ENGINEER , %, ICY
DRAINED, AND GENTLY SLOPING. IT IS ON NARROW TO BROAD CONVEX
B) THE RISEIAN BARREL PIPES SHALL BE RCP.
RIDGETONS, SLOPES ARE SMOOTH AND ABOUT 20 TO 600 FEET LONG.
C) THE SLOPE OFOAM SHALL BE 2.5: 1 OR FLATTER.
AREAS OF THIS SOIL ARE IRREGULARLY OVAL OR ARE LONG AND WINDING.
D) THE OUTLET 9TECTION SHALL BE DESIGNED AS EITHER VDOT EC-1 OR
THEY RANGE FROM 5 TO ABOUT 100 ACRES. THE SURFACE LAYER OF
VESCH STD. $SPEC. 3.18 OUTLET PROTECTION TAILWATER DESIGN.
THE SOIL IS BROWN AND STRONG BROWN LOAM ABOUT 7 INCHES THICK.
E) A GEOTECHNIC, ENGINEERING STUDY SHALL CONSIST OF 1) A SITE INVEST' -
PERMEABILITY AND AVAILABLE WATER CAPACITY ARE MODERATE.
IGATION, 2) 130RA TORY TESTING AND 3) AN ENGINEERING ANALYSIS.
SURFACE RUNOFF IS MEDIUM. THE EROSION HAZARD IS MODERATE.
36C HAYESVILLE-LOAM- 71w. TO 15% SLOPES. THIS SOIL IS DEEP, WELL
DRAINED, AND STRONLG SLOPING. IT IS ON NARROW CONVEX RIDGETOPS
TO 600 FEET
'a
& SEDIMENT
AND SIDE SLOPES SLOPES ARE SMOOTH AND ABOUT 200
LONG. AREAS OF THIS SOIL ARE LONG AND WINDING. THEY RANGE FROM
BROWN CONROL MEA(/
5 TO ABOUT 50 ACRES THE SURFACE LAYER OF THE SOIL IS
�7 V
AND STRONG BROWN ABOUT 7 INCHES THICK. PERMEABILITY AND
CAPACITY ARE MODERATE SURFACE RUNOFF IS RAPID.
I
STRUCTURAL ET310N AND SEDIMENT CONTROL PRACTICES SHALL BE IN
AVAILABLE WATER
THE HAZARD OF EROSION IS SEVERE. THE SOIL HAS GOOD TILTH.
ACCORDANCE NT14HE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK.
STRUCTURAL PRAXES USED IN THIS SECTION CONSIST OF THE FOLLOWING:
1. CONSTRUCTION ITRANCE, ALBEMARLE COUNTY DETAIL - ENTRANCE TO BE
LOCATED TO PREVIT TRACKING OF MUD ONTO EXISTING PUBLIC ROADS.
2. SIL T FENCE, STA)ARD AND SPECIFICA TIONS J. 05 - SIL T FENCE TO BE PLACED
WHERE SHOWN ON E PLANS OR A S FIELD COND177ONS WARRANT. SIL T FENCE
ALONG S7REAMS &REEKS OR SILT FENCE ENCOUPASSING STOCK PILES SHALL
HA VE WIRE BACKIN(
J. TEMPORARYDIVtSION DIKE, STANDARD AND SPECIFICATION J.09 - TEMPORARY
DIVERSION DITCHE3_0F3E CONSTRUCTED WHERE SHOWN ON PLANS
4. INLET PROTEC77CSTANDARD AND SPECIFICATIONS 3.07 -- INLET PROTECTION TO
BE PLACED WHERE MOWN ON THE PLANS OR AS FIELD CONDITIONS WARRANT.
5. CULVERT INLET TOTECTION STANDARD AND SPECIFICATIONS 3 08 - CULVERT
INLET PROTEC310N ) BE PLACED �IHERE SHOWN ON THE PLAINS OR AS FIELD
CONDITIONS WARRAiT.
6. TEMPORARYSEDIIENT TRAP, STANDARD AND SPECIFICATION 3.13 - TEMPORARY
SEDIMENT TRAPS ARL 70 BE LOCATED AS SHOWN ON THE PLANS,
Z OUTLET PROTECTIONSTANDARD AND SPECIFICATION 3.18 - OUTLET PROTECTION
TO BE PLACED AS SHCYN ON THE PLANS.
8. ROCK CHECK DA!fS, STANDARD AND SPECIFICATION 3.20 -- ROCK CHECK DAMS
ARE TO BE PLACEI INOU7FALL DITCHES AS SHOWN ON THE PLANS.
9. TEMPORARY SEDI4EAT BASINS, STANDARD AND SPECIFICA 77ON 3.14 - SEDIMENT
BASINS SHALL BE CONSTRUCTED AS SHOWN ON THE EROSION CONTROL PHASING
PLANS ALL EROSIOI AND SEDIMENT CONTROL MEASURES SHALL BE PLACED AS THE
FIRST PHASE OF A'IY LAND DISTURBING ACTIVITIES. 77-IEY SHALL BE CHECKED DAILY
AND AFTER EACH SGNIFICANT RAINFALL EVENT. THEY SHALL BE CLEANED,
REPAIRED OR REPLLCED AS NECESSARY THROUGHOUT THE CONSTRUCTION PHASE
OF THIS PROJECT. HE FOLLOWING ITEMS REQUIRE PARTICULAR CHECKING:
1. SIL T FENCE SHAIL BE CHECKED REGULARL Y FOR UNDERMINING OR
DETERIORATION OF THE FABRIC. SEDIMENT SHALL BE REMOVED WHEN THE
LEVEL OF THE SEDIMENT DEPOSITION REACHES HALFWAY TO THE TOP OF
THE BARRIERS
2. ROCK CHECK D)VS WILL BE CHECKED REGULARLY FOR SEDIMENT BUILDUP.
WHEN SEDIMENIHAS REACHED HALFWAY UP THE UPSTREAM SIDE, IT
SHALL BE CLEAIED OUT."
J. TEMPORARY SETME'NT TRAPS WILL BE CHECKED REGULARL Y FOR SEDIMEN;
BUILDUP WHET THE SEDIMENT HAS ACCUMULATED TO ONE HALF THE
DESIGN VOLUME OF THE WET STORAGE IT SHALL BE REMOVED AND THE
TRAP RESTOREI TO ITS ORIGINAL VOLUME.
STORMWA TER RUN- OFF' ONS/11ERA 71 t7NS:
THE CONSTRUCTION OF THIS PROJECT WILL HAVE A A41NIMAL EFFECT
1N PEAK RUN-OFF RATES THE TOTAL IMPERIOUS AREA IS 0.40
ACRES, WHICH IS BEING COLLECTED AND DETAINED IN AN
UNDERGROUND DETENTION SYSTEM BEFORE BEING OUTFALLED. IN
ADDITION, A PORTION OF THE SITE IS BEING PRESERVED AS OPEN
SPACE . THESE TWO MEASURES WILL HELP PR07ECT DOWNSTREAM
FLOODING ANDIOR DEGRADATION OF THE STREAMS
1
MI STORMWATER
P,AVILION
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TITLE SHEET
COVER SHEET 1
EROSION AND STORMWATER CONTROL PLAN 2
NOTES AND DETAILS 3
APPROVALS
TIMMONS GROUP IS NOT
RESPONSIBLE OR LIABLE FOR ANY
CONSTRUCTION OR DAMAGES TO THIS
PROJECT PRIOR TO ALL FINAL PLAN
APPROVALS.
vill !MIA Vjw_,T�M
PLANNER, ZONING
ENGINEERING
BbYLDIN(G OFFICIAL
ARCHITECTURAL REVIEW BOARD
FIRE Of FI CIAL
ALBEMARLE COUNTY SERVICE AUTHORITY
VIRGINIA DEPARTMENT OF TRANSPORTATION
0
C
S T� R. COLLINS'�
No. 35791 �
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DATE
07111105
DRAWN BY
L. BARNETT
DESIGNED BY
S.COLLINS
CHECKED BY
S. COLLINS
SCALE
AS NOTED
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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. 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 WATER COURSE.
07111105
DESIGNED BY
B_ PjDor CHECKED BY
IPFTASE' 1� S. COLLINS
ex j,,� SCALE
AS NOTED
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TRAP NO. 2 SW CORNER HANDBOOK SPECIFICA 77ON NUMBER
co
(s DTB -6-
WET/DRY 20 70 IN TEMPORARY DIVERSION DIKE 3.09 TOPSOILING 13.130
TEMPORARY SEDIMENT TRAP J. 13 0
(EL� 588) OT CULVERT INLET PROTECTION 3.08
@B QM[� SEDIMENT BASIN J� 14
DUST CONTROL J. 39
INLET PROTEC-TION 3�07 UC 2
( DP ()
( DF SILT FENCE 3.05 6 Q)
Q9 0 >
THIS SITE P N IS PART OF THE EXISTING STORMWATER CO 0)
MANAGEMENT PLAN CURRENTLY UNDER REVIE)W FOR FINAL JOB NO. Z
`i_78
(DE CONSTRUCTIC)N ENTRANCE 3.02 SAFETY FENCE J.01
APPROVAL AT ALBEMARLE COUNTY ENGINEERING. ALL
RUIN -OFF FOR THIS PHASE OF THE WHITE GABILES PROJECT 22573
co
HAS BEEN ACCOUNTED FOR UNDER THE STORNWATER PLA (DD CHECK DAM J. 20 TEMPORA R Y RIGH T- OF- WA Y J. 11 SHEET NO. -a
ppm
DI VERSION
70' MIN.
'FILTER CLOTH-" 6" MIN. /
SIDE ELEVATION
GROUND
70' MIN.
B ASHRA
OPTION L
12" MI
EXISTING
1 PAVEMEI\
ff
VDOT #1 POSITIVE DRAJNA
COARSE AGGREGATE B- TO SEDIMENT
MUST EXTEND FULL WIDTH I JRAPPING DEVICE
OF ! EGRESSPLAN
OPERATION
FILT
.11..6(.-1t• '�� .E>�S!�� �,L>�3►�3 t�>'i�Y1 �+<iM'•'►
•
►=u SECTION
!
SECTION
WASHRACK (OPTIONAL)
M-W 2
1. SET THE STAKES.
t6'MAX,
FLOW -
3. STAPLE FILTER MATERIAL
TO STAKES AND EXTEND
IT INTO THE TRENCH.
FLOW'®
2. EXCAVATE A 4"X 4" TRENCH
UPSLOPE ALONG THE LINE OF
STAKES.
l.i I
1�
Jill
4"
4. BACKFILL AND COMPACT
THE EXCAVATED SOIL.
SH(PERSPECTIVE VIEW)
POINTS A SHOULD BE HIGHER THAN POINT B.
DRAINAGEWAY INSTALLATION
(FRONT ELEVATION)
TILT FENCE
(WITHOUT WIRE SUPPORT)
DETAIL
N.T.S.
MINIMUM TOP
R SEDIMENT (FEETEMBANKMENTS
WIDTHUIRED Q
HEIGHT
ACCORDING TO OF EMBANKMENT
H
HO
W
1.5
0.5
2.0
-�
2.0
1.0
2.0
2.5
1.5
2.5
3.0
2.0
2.5
H
3.5
2.5
3.0
Ha
4.0
4.5
3.0
3.5
3.0
4.0
0 °
NAL
f GROUND
5.0
4.0
4.5
f
EXCAVATED AREA
MAX_ DEPTH = 4'
TEMPORARY DTRAP DIMENSIONS XD-OV
ORIGINAL
GROUND
ELEVATION
I
VAR'
67 CU. YD./ACRE a
67 CU. YD./ACRE
(EXCAVATED)
VARIABLE
\ FILTER \ GROUND
CLOTH \e ELEVATION
,,SEE TEMPORARY SEDIMENT TRAP COARSE CLASS I
DIMENSIONS DETAIL AGGREGATE RIPRAP
CROSS SECTION OF OUTLET
LENGTH (IN FEET) =
Nx Af�t�AINAGE AREA
CLASS I RiPRA ` 3
DIVERSION
DIKE
COARSE AGGREGATE ::--'--- �
XCAVAI FILTER
AREA- CLOTH
COARSE AGGREGATE SHALL BE VDOT #3, #357 OR #5
OUTLET (PERSPECTIVE VIEW)
TEMPORARY SEDIMENT TRAP
PERSPECTIVE AND SECTION
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T A , %A I
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( G - ANGLED ENDS
CMISED BY THE ALITO-
INCORRECI SOD CUTTER MUST
BE MATCHED CORRECTLY.
R= E
DT
7
ROLL O! IMMEDIATELYWATERDEPTH
TO ACHIEVE FIRM
!
r
• NEEDED.!:
CONTACTWATER
WELL AS SOON :. Oy
AS THE '! IS LAID.
APPEARANCE
OR GRASS BLADES.
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,CONTROL MEASURESL
EROSION AND SEDIMENT CONTROL MEASURES.
IT IS ANTICIPATED TO USE CONSTRUCTION ENTRANCES, DIVERSION DIKES SEDIMENT TRAPS
AND BASINS, AND SILT FENCES WILL BE INSTALLED TO CONTROL SURFACE DRAINAGE,
TEMPORARY SEEDING WILL BE USED IMMEDIATELY FOLLOWING ALL LAND DISTURBANCE
ACTIVITIES TEMPORARY STOCKPILE AREAS WILL BE MAINTAINED FROM TOPSOIL TVA WILL
BE STRIPPED FROM AREAS TO BE GRADED AND STORED FOR LATER SPREADING.
STOCKPILE LOCATIONS SHALL BE ON SITE AND SHALL BE STABILIZED 10774 A TEMPORARY
VEGETATIVE COVER. PERMANENT SEEDING WILL BE PERFORMED FOR ALL AREAS V/HICH
WILL NO LONGER BE EXCAVATED AND WHERE CONS7RUCTON ACTIVITIES HAVE CEASED.
PERMANENT SEEDING SHALL ALSO BE PERFORMED FOR ALL DENUDED AREAS WHICH WILL
BE LEFT DORMANT FOR A YEAR OR MORE, SELEC7ON OF SEED MIXTURE WILL DEPEND ON
THE 77ME OF YEAR APPLIED.
TEMPORARY SEEDING WILL BE PERFORMED FOR ALL DENUDED AREAS WHICH WILL 13E LEFT
DORMANT FOR MORE THAN SEVEN DAYS. THESE AREAS SHALL BE SEEDED WITH FAST
GERMINATING VEGETATION IMMEDIATELY FOLLOWING GRADING OF THOSE AREAS SELECTION
OF SEED MIX7URE WILL DEPEND ON THE TIME OF YEAR APPLIED.
CONSTRUICTION ENTRANCE.
A STABILIZED PAVED CONSTRUCTON ENTRANCE WITH A WASH RACK LOCATED AT POINTS
OF VEHICULAR INGRESS AND EGRESS ON A CONSTRUCTION SITE. TO REDUCE THE
AMOUNT OF MUD 7RANSPORTED ONTO PAVED PUBLIC ROADS BY MOTOR VEHICLES' OR
RUNOFF
CONS77?U/CTION ENTRANCES SHALL BE INSTALLED AS SHOWN ON THE PLANS TO REDUCE
THE AMOUNT SEDIMENT TRANSPORTED ONTO PUBLIC ROADWAYS.
SILT FENCCE:
A TEMPORARY SEDIMENT BARRIER CONSIS77NO OF A SYNTHETIC FILTER FABRIC STRETCHED
ACROSS AND ATTACHED TO SUPPORTING POSTS AND ENTRENCHED. TO INTERCEPT AND
DETAIN SMALL AMOUNTS OF SEDIMENT FROM DISTURBED AREAS DURING CONSTRUCTION
OPERATIONS IN ORDER TO PREVENT SEDIMENT FROM LEAVING THE SITE TO DECREASE
THE VELOCITY OF SHEET FLOWS AND LOW -TO -MODERATE LEVEL CHANNEL FLOWS. THE
SILT FENCE BARRIERS SHALL BE INSTALLED DOWN SLOPE OF AREAS WIN MINIMIAL.
GRADES TO FILTER SEDIMENT LADEN RUNOFF FROM SHEET FLOW AS INDICATED, THEY
SHALL BIE INSPECTED IMMEDIATELY AFTER EACH RAINFALL AND MAINTAINED IN
ACCORDAANCE WITH THE VIRGINIA EROSION & SEDIMENT CONTROL HANDBOOK (VESCH).
PERMANIENT STABILIZATCY.
THE ESTiABLISHMENT OF PERENNIAL VEGETA7IVE COVER ON DISTURBED AREAS BY
PLAN77MG SEED. TO REDUCE EROSION AND DECREASE SEDIMENT YIELD FROM DISTURBED
AREAS. TO PERMANENTLY STABILIZE DISTURBED AREAS IN A MANNER THAT IS
ECONOMICAL, ADAPTABLE TO S17E CONDITIONS, AND ALLOWS SELECTION OF THE MOST
APPROPIRIATE PLANT MATERIALS. TO IMPROVE WILDLIFE HABITAT. TO ENHANCE (NATURAL
BEAUTY UPON COMPLETION OF CONSTRUCTION ACTIVITIES, ALL AREAS WILL RECEIVE A
PERMANIENT VEGETATIVE COVER.
TEMPORAIRY SEEDING.°
THE ESTABLISHMENT OF A TEMPORARY VEGETATIVE COVER ON DISTURBED AREAS BY
SEEDING' WITH APPROPRIATE RAPIDLY GROWING ANNUAL PLANTS. TO REDUCE EROSION
AND SEDIMENTA77ON BY STABILIZING DISTURBED AREAS THAT WILL NOT BE BROUGHT TO
FINAL GRADE FOR A PERIOD OF MORE THAN 30 DAYS. TO REDUCE DAMAGE FROM
SEDIMENiT AND RUNOFF TO DOWNSTREAM OR OFF -SITE AREAS AND TO PROVIDE
PROTEC770N TO BARE SOILS EXPOSED DURING CONSTRUCTION UN77L PERMANENT
VEGETATION OR 07HER EROSION CONTROL MEASURES CAN BE ESTABLISHED.
DUST CONTROL:
REDUCINIG SURFACE AND AIR MOVEMENT OF DUST DURING LAND DISTURBING, DEMOLITION
AND COIIVSTRUC77ON ACT%OT/ES.
TO PREVENT SURFACE AIYD AIR MOVEMENT OF DUST FROM EXPOSED SOIL SURFACES AND
REDUCE THE PRESENCE OF AIRBORNE SUBSTANCES WHICH MAY PRESENT HEALTH
HAZARDS TRAFFIC SAFETY PROBLEMS OR HARM ANIMAL OR PLANT LIFE;
DUST CONTROL MEASURES SHALL BE EMPLOYED TO PREVENT SURFACE AND Alf?
MOVEMENT OF DUST DURING CONSTRUC770N. MEASURES EMPLOYED SHALL_ BE IN
ACCORDANCE WITH THE VESCH.
7EMPORAARY DIVERSION DIKE.
'6??A RIDGE OF COMPACTED SOIL CONSTRUCTED AT THE TOP OR BASE" OF A SLOPING
DISTURBED AREA WHICH DIVERTS OFF -SITE RUNOFF AWAY FROM UNPROTECTED SLOPES
AND TO A STABILIZED OUTLET, OR TO DIVERT SEDIMENT -LADEN RUNOFF TO A SEDIMENT
TRAPPING STRUCTURE. 87An7MUM EFFECTIVE LIVE /S 18 MONTHS
ROCK CHECK DAMS:
SMALL, TEMPORARY STOOF DAMS CONSTRUCTED ACROSS A DRAINAGE DITCH TO REDUCE
THE VELOCITY OF CONCENTRATED FLOWS, REDUCING EROSION OF THE SW,ALE OR DITCH.
LIMITED TO USE IN SMAL,', OPEN CHANNELS WHICH DRAIN 10 ACRES OR LESS; SHOULD
NOT BE USED IN LIVE STREAMS.
STORM DRAIN INLET PROTEC770N:
THE INS'TALLA RON OF VARIOUS KINDS OF SEDIMENT TRAPPING MEASURES AROUND DROP
INLETS 0R CURB INLET STRUCTURES PRIOR TO PERMANENT STABILIZA77ON OF THE
D/STUR3)ED AREA; LIMITED TO DRAINAGE AREAS NOT EXCEEDING ONE ACRE, AND NOT
INTENDED TO CONTROL LARGE, CONCENTRATED STORMWATER FLOWS
TEMPORARY SEDIMENT TRAP:
A SMALIL PONDING AREA, FORMED BY CONSTRUCTING AN EARTHEN EMBANKMENT WITH A
STONE (OUTLET ACROSS A DRAINAGE SWALE, TO DETAIN SEDIMENT -LADEN RUNOFF FROM
SMALL !DISTURBED AREAS FOR ENOUGH TIME TO ALLOW MOST TO THE SUSPENDED SOLIDS
TO SETTLE OUT. MAXIMUM EFFEC7VE LIFE IS 18 MONTHS.
7EMPQR,ARY SEDIMENT BASIN
A TEMPORARY BARRIER OR DAM WITH CONTROLLED STORMWATER RELEASE S77?UCTURES
WHICH IS FORMED BY CONSTRUCTING AN EMBANKMENT OF COMPACTED SOIL ACROSS A
DRAINACGEWAY° IT IS USED TO DETAIN SEDIMENT -LADEN RUNOFF FROM DRAINAGE AREAS
3 ACRES OR GREATER FOR ENOUGH 77ME TO ALLOW MOST OF THE SUSPENDED SOLIDS TO
SETTLE OUT. IT CAN BE CONSTRUCTED ONLY WHERE THERE IS SUFFICIENT SPACE AND
APPROPRIATE TOPOGRAP,VY MAXIMUM EFFECTIVE LIFE IS 18 MONTHS UNLESS DESIGNED
AS A PERMANENT POND BY A QUALIFIED PROFESSIONAL,
OUTLET PROTECTION:
THE INSTALLATION OF RIPRAP CHANNEL SECTIONS AND/OR S7ILLING BASINS BELOW
STORM DRAIN OUTLETS TO REDUCE EROSION AND UNDER-CUTTNG FROM SCOURING AT
OUTLETS AND TO REDUCE FLOW VELOC177ES BEFORE STORMWATER ENTERS RECEIVING
CHANNELS BELOW THESE OULETS.
CULVERT INLET PRO TEC770N:
A SEDIMENT FILTER LOCATED AT THE INLET TO STORM SEWER CULVERTS WHICH PREVENTS
SEDIMEAVT FROM ENTERING, ACCUMULATING IN AND BEING 7RANSFERED BY THE CULVERT.
IT ALSO PROVIDES EROSION CONTROL AT CULVERTS DURING THE PHASE OF A PROJECT
WHERE (ELEVATIONS AND DRAINAGE PATTERNS ARE CHANGING, CAUSING ORIGINAL CONTROL
MEEASUIRES TO BE INEFFECTIVE.
SAFETY' FENCE:
A PROTrECTIVE BARRIER INSTALLED TO PROHIBIT UNDESIRABLE USE OF AN EROSION
CONTROL MEASURE,•
PERAdAIVEIVT STAIILIZATI�!.
AFTER CONSTRUCTION IS COMPLETED, ALL DISTURBED
AREAS OF THE SITE WILL BE LIMED, FERTILIZED, AND
,SEEDED AS PER CURRENT VDOT STANDARDS THIS SHALL
CONSIIST OF THE FOLLOWING,
TOPSOIL - 2" DEP774
LIME - 2 TONSIACRE
FERTILIZER - 600 LBS /ACRE OF 15-30-15
SEED - ERNST 5311 CONSERVATION SEED MIX -
ERNMrX-114 (45 LBS/ACRE PENNLAWN
CREIEPING RED FESCUE, 37.5 LBS/ACRE ARGILS
KENTIUCKY BLUEGRASS, 37.5 LBS/ACRE PARK
KEN TUCKY BLUEGRASS 15 LBS./ACRE ANNUAL RYEGRASS
& 15 LBS./ACRE PLEASURE PERENNIAL
RYE(GRASS) OR ACCEPTABLE ALTERNATE,
AFTER THESE AREAS ARE STABILIZED, THEY' WILL BE
MOWED AND MAINTAINED ON A REGULAR BASIS,
AIM TENANCE°
IN GENERAL, ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CHECKED DAILY
AND AFTER EACH SIGNIFICANT RAINFALL. SPECIFIC ATTENTION WILL BE GIVEN TO THE
FOLLOWING ITEMS:
A. SEDIMENT BASINS ANDIOR TRAPS WILL BE CLEANED AND MAINTAINED
IN ACCORDANCE WITH THE VIRGINIA EROSION & SEDIMENT CONTROL HANDBOOK.
B. ALL GRAVEL OUTLETS WILL BE CHECKED REGULARLY FOR SEDIMENT
BUILDUP THAT WILL PREVENT PROPER DRAINAGE. IF THE GRAVEL 1S
CLOGGED BY SEDIMENT, THE GRAVEL WILL BE REMOVED AND CLEANED,
OR I T WILL BE REPLACED.
C,. ALL SUIT FEN';E BARRIERS WILL BE CHECKED REGULARLY FOR UNDERMINING
OR DETERIORATION OF THE FABRIC AND REPAIRED AS REQUIRED. SEDIMENT
SHALL BE REMOVED WHEN THE LEVEL OF SEDIMENT DEPOSITION REACHED HALF
WAY TO THE TOP OF THE BARRIER.
D , ALL SEEDED AREAS WILL BE CHECKED REGULARLY TO SEE THAT A GOOD STAND
IS MAINTAINED, AREAS SHOULD BE FERTILIZED AND RESEEDED AS NEEDED.
CONTROL NOTES & NARRATIVE
_EROSION
THE PURPOSE OF THE LAND DISTURBING ACTIVITY IS TO
CREATE A RESIDENTIAL PAVILION V (PHASE II) OF THE
WHITE GABLES PROJECT, WHICH IS A RESIDENTIAL CONDOMINIUM PROJECT WITH 6 BUILDINGS TOTAL AT FINAL
BUILD -OUT. THE PROJECT IS SERVED W177N A LOOP ROAD AND ONE ENTRANCE OFF RTE, 250. THIS PHASE
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R.
COLLINS'�
CONTAINS APPROXIMATELY 0.68 ACRES OF LAND DISTURBANCE
C� No. 35791
EZ1'j77N!2 51 TE CCNBl77C1� °
AT PRESENT THE MAJORITY OF THE SITE IS UNDER CONSTRUCTION. THE SITE, IN GENERAL, IS OPEN GRASS
WITH SOME TREES AND AN EXISTING HOUSE, THAT WILL REMAIN THE SITE SLOPES OFF TO THE SOUTH TOWARD
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RTE. 250 AND SLOPES OFF TO THE NORTHEAST TOWARD THE RAILROAD. THERE IS AN EXISTING HOUSE ON THE
V,
PROPERTY AS WELL AS (2) CONDO BUILDINGS THAT ARE UNDER CONSTRUCTION. DRAINAGE, WATER, AND SEWER
UTILITIES HAVE ALREADY BEEN INSTALLED ON THE SITE. THERE IS AN EXISTING STOCKPILE OF MATERIAL THAT
IS LOCH TED ON THE PA VIL ION V SI TE THA T NEEDS TO BE MOVED.
AQ,ZAC n1 T AREA
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THIS SITE IS BORDERED BY THE C&O RAILROAD TO THE NORTH RT 250 TO THE SOUTH, THE KAPPA SIGMA SITE
TO THE WEST !WHICH IS CURRENTLY BEING REZONED FOR RESIDENTIAL DEVELOPMENT, AND 7HE NATIONAL LEGAL
or
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RESEARCH GROUP TO THE EAST. MOST OF THE DRAINWATER FROM THE SITE IS CAPTURED AND RELEASED
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EITHER INTO THE EXISTING DRAINWA TER SYSTEM ALONG RTE 250 OR INTO THE DRAINWA TER OUTFALL AROUND
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THE RAILROAD TO THE NORTH OF THE PROPERTY. THEREFORE, THE DEVELOPMENT WILL HAVE MINIMAL EFFECTS
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ON THE ADJACENT PROPERTIES EROSION CONTROL MEASURES SUCH AS SEDIMENT TRAPS, BASINS SILT FENCES,
AND DIVERSION DIKES SHALL BE UTILIZED TO CONTAIN THE LAND DISTURBANCE ACTIVITIES
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CF�"Sl TF LA/ B DISTURBANCE. _
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NONE.
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THE ONLY CRITICAL AREA 1S THE ACCESS ROAD THAT WILL BE GRADED ON FOR THE LOOP ROAD AND ENTRANCE
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1.
TO THE OFFSITE NATIONAL RESEARCH CROUP. SPECIAL CARE SHALL BE GIVEN TO ENSURE ALL GRADING
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ACTIVITY REMAINS ON THE PROPERTY. IN ADDITION, SEDIMENT TRAPS AND SILT FENCES SHALL BE USED TO
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PROTECT EROSION ONTO RTE. 250.
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SEQUENCE OF C0NSaQ!2770N.
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1° N077FY` ALBEMARLE COUNTY ENGINEERING AND PUBLIC WORKS DEPARTMENT TO SCHEDULE A
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PRE -CONSTRUCTION MEE77NU AS REQUIRED.
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2, FLAG THE CLEARING LIMITS AND WOODED AREA THAT IS TO REMAIN.
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J. NO EROSION CONTROL MEASURES MAY BE REMOVED DURING THE CONSTRUCTION PROCESS WITHOUT THE
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APPROVAL FROM THE INSPECTOR ON THE PROJECT,
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4. ENSURE ENSURE THAT THERE IS A PAVED CONSTRUCTION ENTRANCE AND WASH RACK FOR THE PROJECT LOCATED
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AT THE ENTRANCE TO ROUTE 250, AS REQUIRED FOR PHASE L IN ADDITION, INSTALL A CONSTRUCTION
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ENTRANCE FOR THE PAVILION V SITE. CONSTRUCTION ENTRANCES WHERE CONSTRUCTION VEHICLE ROUTES
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INTERSECT PAVVED PUBLIC ROADS, PR04SIONS SHALL BE MADE TO MINIMIZE THE TRANSPORT OF SEDIMENT BY
(VEHICULAR) TRACKING ONTO THE PAVED SURFACE. WERE SEDIMENT IS TRANSPORTED ONTO A PUBLIC ROAD
SURFACE, THE ROAD SHALL BE CLEANED THOROUGHLY AT THE END OF EACH DAY. SEDIMENT SHALL BE
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REMOVED FROM THE ROADS BY SHOVELLING OR SWEEPING AND TRANSPORTING TO A SEDIMENT CONTROL
DISPOSAL AREA. STREET WASHING SHALL BE ALLOWED ONLY AFTER SEDIMENT IS REMOVED IN THIS MANNER. THIS
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PROVISION SHALL APPLY TO INDIVIDUAL SUBDIVISION LOTS AS WELL AS TO LARGER LAND DISTURBING ACTIVITIES
STANDARD AND SPEC. 3.02 IS ADEQUATE DUE TO THE LACK OF AVAILABLE WATER TO THE SITE. SHOULD THE
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TEMPORARY CONSTRUCTION ENTRANCE NOT BE MAINTAINED PROPERLY OR AN EXCESSIVE AMOUNT OF SOIL FOUND
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TRACKED ONTO THE PUBLIC ROADWAY, THEN A PAVED CONSTRUCTION ENTRANCE, WATER TANKER TRUCK WITH 2
PRESSURE WASHERS AND A SETTLING AREA MA Y BE REQUIRED BY THE EROSION AND SEDIMENT CONTROL PROGRAM
ADMINISTRA TOR.
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5. INSTALL THE EROSION CONTROL MEASURES AS SHOWN. ALSO, CONTINUE TO UTILIZE THE EROSION CONTROL
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MEASURES FROM PHASE 1 CONTRUCTION (INCLUDES PAVILION I & III CONSTRUCTION WITH THE LOOP ROAD AND
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ENTRANCE). PAVILION V SHALL BE CONTAINED A BY SILT FENCE TO PREVENT RUN-OFF. EXISTING SEDIMENT TRAP 112
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SHALL BE UTILIZED IN THE CONSTRUCTION OF THE ACCESS ROAD. SEDIMENT BASINS AND TRAPS, PERIMETER DIKES,
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SEDIMENT BARRIERS, AND OTHER MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AS A FIRST STEP
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WITH ANY LAND DISTURBANCE ACTIVITY AND SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE LAND DISTURBANCE
TAKES PLACE.
DATE
6. ONCE ALL THE EROSION CONTROL ITEMS HAVE BEEN INSTALLED AS SHOWN AND THE COUNTY INSPECTOR HAS
APPROVED THE EROSION CONTROL MEASURES, THE CONTRACTOR CAN CLEAR AND GRADE THE SITE. THE STORM DIKE
SHOULD ALSO BE REMOVED. STABILIZA77ON MEASURES SHALL BE APPLIED TO EARTHEN STRUCTURES SUCH AS DAMS
DIKES AND DIVERSIONS IMMEDIA TEL Y AFTER INSTALLATION,
DRAWN BY
7. ROUGH GRADE THE SITE, INSTALLING THE UTILITIES AS REQUIRED.
8. FINE GRADE, INSTALL CURB & GUTTER, INSTALL SIDEWALKS SEED, AND FERTILIZE THE DENUDED AREAS, INSTALL
V, DISH
INLETS AND INSTALL INLET PROTECTION AS SHOWN ON THE PLANS.
3. INSTALL STONE BASE AND PAVE ROADS AND DRIVEWAYS:
DESIGNED BY
10. ONCE THE SITE IS STABILIZED AND THE INSPECTOR HAS GIVEN APPROVAL, THE CONTRACTOR CAN REMOVE THE
EROSION CONTROL MEASURES NO ITEM SHALL BE REMOVED UNLESS THE UPSTREAM AREAS ARE STABILIZED AND THE
S,COLLINS
COUNTY INSPECTOR GIVES PERMISSION.
11. MAINTAIN ALLL EROSION CONTROL MEASURES AS SPECIFIED IN THE VIRGINIA EROSION AND SEDIMENT CONTROL
CHECKED BY
HANDBOOK, REMOVING ONLY WHEN APPROVED BY THE COUNTYENGINEER IN ACCORDANCE WITH THE VIRGINIA
EROSION AND SEDIMENT CONTROL HANDBOOK.
S. COLLINS
12. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 3D DAYS AFTER FINAL
SITE STABILIZATION OR AFTER THE 7FMPORARYMEASURES ARE NO LONGER NEEDED, UNLESS OTHERWISE
SCALE
AUTHORIZED B Y THE LOCAL PROGRAM ADMINISTRATOR. TRAPPED SEDIMENT AND THE DISTURBED SOIL AREAS
RESULTING FROM THE DISPOSI TION OF T•-MIPORARY MEASURES SHALL BE PERMANENTL Y STABILIZED TO PREVENT
AS NOTED
FUTHER EROSION AND SEDIMENTATION.