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HomeMy WebLinkAboutWPO201900036 Plan - E&S 2019-07-23ABBREVIATIONS S YM OL AC ACRE EXISTING PROPOSED ACSA ALBEMARLE COUNTY SERVICE AUTHORITY ADA AMERICANS WITH DISABILITIES ACT=='"�== ARV AIR RELEASE VALVE BF BASEMENT FLOOR rs-' BM BENCH MARK BW BOTTOM OF WALL (AT GROUND LEVEL) 498 --- ®12® CFS CUBIC FEET PER SECOND r- CG-12 ADA ACCESSIBLE CURB RAMP (VDOT STANDARD) CL CMP CLASS CORRUGATED METAL PIPE i 5 CO SANITARY SEWER CLEANOUT CONC CONCRETE CY CUBIC YARDS 3, DB/PG DEED BOOK/PAGE , DEQ VIRGINIA DEPARTMENT OF ENVIRONMENTAL QUALITY DIP DUCTILE IRON PIPE IT DOM DOMESTIC E&S EROSION AND SEDIMENT CONTROL EL, ELEV ELEVATION ESMT EASEMENT EW END WALL EX EXISTING FF FIRST FLOOR FH FIRE HYDRANT FM FORCE MAIN FPS FEET PER SECOND `' " -------� GSF GROSS SQUARE FEET GW GUY WIRE_...._- HDPE HIGH -DENSITY POLYETHYLENE PIPE HP HIGH POINT HT HEIGHT INV INVERT ........ v__® IRF IRON ROD FOUND IRS IRON ROD SET L LENGTH LAT LATERAL" LF LINEAR FEET LP LOW POINT _ LT LEFT MAX MAXIMUM MH MANHOLE MIN MINIMUM NSF NET SQUARE FEET OFIE OVERHEAD ELECTRIC PC POINT OF CURVATURE PERF PERFORATED PL PROPERTY LINE PROP PROPOSED PSI POUNDS PER SQUARE INCH PT POINT OF TANGENCY PVC POINT OF VERTICAL CURVATURE PVC POLYVINYL CHLORIDE PIPE PVI POINT OF VERTICAL INTERSECTION PVT POINT OF VERTICAL TANGENCY R RADIUS R/W RIGHT-OF-WAY RCP REINFORCED CONCRETE PIPE RED REDUCER RT RIGHT RTE ROUTE RWSA RIVANNA WATER SERVICE AUTHORITY SAN SANITARY SEWER SD SIGHT DISTANCE SDR STANDARD DIMENSION RATIO STA STATION SVC SERVICE SW SIDEWALK SWIVI STORMWATER MANAGEMENT T TRANSFORMER TBR TO BE REMOVED TC TOP OF CURB TP TELEPHONE PEDESTAL TW TOP OF WALL UG UNDERGROUND UGE UNDERGROUND ELECTRIC UGU UNDERGROUND UTILITY VDOT VIRGINIA DEPARTMENT OF TRANSPORTATION VESCH VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK VSMP VIRGINIA STORMWATER MANAGEMENT PROGRAM WM WATER METER WTR WATER WV WATER VALVE „r ! I t > t �i y v S I a , GRASS DITCH LINING PER VESCH 3.32 VDOT STD. EC-3 DITCH LINING CONTOUR LINE WITH ELEVATION STORM SEWER STRUCTURE IDENTIFIER SANITARY SEWER STRUCTURE IDENTIFIER BENCHMARK, TEST PIT MANHOLE WITH FRAME AND COVER SPOT ELEVATION ADA PARKING SYMBOL WATER CROCK/METER FIRE HYDRANT WATER VALVE WATERMAI N SANITARY SEWER MAIN STORM SEWER PROPERTY LINE/RIGHT-OF-WAY LINE CENTER LINE F�jviCE LINE EASEMENT LINE .a S VICINITY MAP SCALE: 1"=2,000' PARC:LL MAP SCALE: 1"=500' ` M I MY ic. No. 33028 %,VAL S H E E T N ur" E Xf 3 Sheet dumber Sheet Title 1 COMER SHEET 2 EXISTING CONDITIONS AND DRAINAGE PLAN 3 EROSION AND SEDIMENT CONTROL PLAN - PHASE 1 4 EROSION AND SEDIMENT CONTROL PLAN - PHASE 2 5 EROSION AND SEDIMENT CONTROL DETAILS 6 EROSION AND SEDIMENT CONTROL NARRATIVE P1 11 " 111 1 %&q ` IFIh 0 P" E K" h T " T I INJ F 0 R" M A T I t NJ TAX MAP 6913 LEGAL REFERENCE DB e PROFERTY AREA 11. � t W I- mrr"OR"OJECT • THE PURPOSE OF THIS PROJECT IS TO PERFORM MAINTENANCE OF THE EXISTING DAM LOCATED ON THE SUBJECT 11.7-ACRE PROPERTY (ZONE: RURAL AREA) AT TAX MAP 69B-46 IN THE GREENWOOD AREA OF ALBEMARLE COUNTY. THE EXISTING 3.5-ACRE POND DRAINS APPROXIMATELY 318-ACRES OF UPSTREAM DRAINAGE AREA. THE DAM IS NOT REGULATED BY DCR SINCE THE DAM HEIGHT IS UNDER 25 FEET. THE DAM MAINTENANCE WORK WILL INCLUDE RAISING THE DAM BYAPPROXIMATELY 18" AND RE -GRADING THE DOWNSTREAM EMBANKMENT TO 3H:1V. THE APPROXIMATE 1,400 CY OF FILL NEEDED FOR THE DAM MAINTENANCE WORK WILL BETAKEN FROM AN ONSITE BORROW AREA LOCATED ADJACENT TO AND NORTH OF THE DAM. THE EXISTING 4" PRINCIPAL SPILLWAY IS NOT OPERATIONAL AND WILL BE ABANDONED IN PLACE, AND FLOW FROM THE POND WILL BE CONTROLLED BY WAY OF A NEW COMBINED PRINCIPAL/EMERGENCY OVERLAND SPILLWAY. A VIRGINIA EROSION AND SEDIMENT CONTROL PROGRAM (VESCP) PERMIT IS REQUIRED FOR THE WORK SINCE THE DISTURBED AREA WIL BE GREATER THAN 1 ACRE. THE WORK IS EXEMPT FROM THE REQUIREMENTS OF THE VIRGINIA STORMWATER MANAGEMENT PROGRAM PERMIT REQUIREMENTS OF 17-303 (G) OF THE ALBEMARLE COUNTY CODE. ALBEMARLE COUNTY IS A VSMP AUTHORITY. f Ti YTI IN -1 vPPRovF�® Brie County by the t\ibem t�0�t peQerm��,fi ®ate��jd64ci'' VISIO # DESCRIPTION DATE 1 COUNTY COMMENTS 7/17/2019 2 COUNTY COMMENTS 7/22/2019 owner: ARIN AND LAUREN SIME 130 NEW YORK TRACE GREENWOOD, VA 22943 engineer: 30 SCALE, LLC 871 JUSTIN DRIVE PALMYRA, VA 22963 .434.242.2866 e: mike@30scale.com 11' web: www.30scale.com sheet title: COVERSHEET 1 3 z 3 I'M �J r sheet #I s% OF B scale: 111=20' date:5/31/2019 � xis © 2019 - 30 SCALE, LLC lEF- a v W 0 0 di m a z ,� . Ova=��M 8611 Resource PIe.or,v Uoil MI-1-4P _ �q i 1E i i&ra' ;- r } S� -y�� yy �J 1. rpli,r_'T f _,}T��I�_a, A, .1J_ 4.L, c"•L_.. .I€('�i-�:.li£Y=«I�..P�, �rC'1� SOILS MAP SCALE: 1 "=1,000' SOILS REGISTER PREDOMINANT SOILS GROUP COMPOSITE CN CALCULATIONS SOIL COMPOSITE AREA GROUP CN , CN*AI EA CN PASTURE - (GOODS 8 R 61 4,148ry WOODS/RURALAREA (GOOD) 226 8 5 12, 30, IMP ERVIOU a AREA_.. _ ,..:25 .. �8,4505 .._, ICITAL 319 19, 2 ` gyp' '51" t _ , CREDIT: NRCS t SHALLOW CONCENTRATED FLOW L= 454 FEET T=1 MIN r r M � f - ! i .t pI iio I iF if r i e't E� 'i ;r {{ 'f 4} }i Fr/ rr�✓'Y Et t� jM1 £fl I t} iiti) iypp } ! t {} /'L 3 \, T d7J �r fr SHEET FLOW L= 300 FEET T 27 MIN 1;1r'L / �*� ✓ r* L i -tit "" �✓;-> wJ j j Y 1 6 t ✓, 9 } J ftt i S r �" /' m�, 1� t •.� \�/ "` ' f i I 11f�' tt # .g a ^k��,4 d, : /�,���' �,r,; f 3 6 S, * ' ` 1 ;✓:� �! 3!/!f, � /t ._„_ �s'tb'�, �.xi1/�,,' ,a"r i d t w � xi t rt f, 1 •.'3 1 v , 1 / ' r ti 3 J I1fII� F f i q� s t `t P s3 d f E f Fd i Z 'k F'/ L a/ I t L' l Fs , � r d t} S' 1% , 1 S SaE- f f .. ✓„e ebb ,�+f"'!p't,...yi, �r `Y Lrg' 01 S -/z e r t t jr fI [ , r �l ,e^ t x ;✓ X i t j 1 I 1;4 t t t' t t k i Lt• J I , i L s` t ^`ems 4 f x F was ,N✓' , , � ,, { / { '" "" ..^ f t \ t,ti ; E iJ iJd S ( ,.,;,, .: i F 1 ✓' /'N'✓N/.FfJ )ifl v'r._ 7#1s 3tSi 5�i `I r ti SSS S4rS ''�. 3,, Y P{%t f 1lF \iL �/'� .!f S°,r �Y'.Y �/ ...' .,.,_'<o_ -a,�� ✓r r A t, Sif i t Fs i,�h, a t, , Irs, . �.�,�,,....,. ��..•., i#tFt{;F> ,t r' ✓'a /< j3.1 Jd1/: pi f.'la„'.fj,' =�;:%% �'''7 Xe' y •� ,rs' t, i 'i r ;i"�I }t iV° i '!t t i't. 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"," :" .,, ,, , .....:... , ,.,, a..aN• ,.�'!,.. ni-"2",..e'" �'".,^ _,'.,' ,,,,'� S, a , L ,, \� t tl i x� 2� ,i �L , — /.+' ea::::.... ��... " � 'S'o�"- r. `` h :':i:..'S`'` i t 41' : � � i i '. S � / V ✓,:, .:LL, - ., � ^.._e s 7"�,„, i t gt ,� ^. ';is ,, 1, 'S *• '\�\'l��t; _....�- "" ,✓ N'✓ µhp,,,.. .-',; r/'�,;ss'r Jj F. ✓' . l,lk € i' t l . t ,i, k i j,t`; E , t' ,,r, /.,� 11b „ F w , -.oy."r.'., ',�•. 1-e,F .�� ,`✓,'P"✓ ✓r, <: "ah,,,' ,.,-'r .+'.✓'' .C'%'.,�:'✓i'� �� F ?fl,ff `J �.� f.+f3 .S s1 32 J' rI ,s✓e ..,, ,e r CHANNEL FLOW ;".; /,<�;r/ �CHA { :zr'" „„ u . ,,, z,;,� ,,�. ..,, ,, /lf-..,.,.. £;.4 t - 9L a �h n , t.. r N �.,tn ✓ ' sst F w'`�� ,-.i� ' L= 4,383 FEET '* � l`•,..-z , -., t it �,.:" \� T=15 MIN ¢.,. f ..�✓„.. d Jl '• � �� „ „\° `i , tqy', \ , DA — 31 AC ... �, /p • S J p ' 3 C IFNI 6 0 «J ff f i' _lI`' �,., tF ,sFt t.l P `�' ,-'�r� 1,_77 J, > Tc=43 Ivi 1\4 / . .. .......... , /"�,' f dr 1i3� ,. ,.. X}?` Y" X s"L�`s/s;. {J ,✓' r^" .,,. ,,,... {<F%X`'l, <� a t',,,I, ;;",,��"y'. 'a'`i t ' �,',e �,"-ar'�1 °y4`��i"i � f F �d � ✓ •-... ,,.R-- _., � 1 e /` r : � � /"" � �y ,p/s'tG' ,.,, °` �i f .F^ /' ����i'', ` .-..,.' � i �i; ._--.,.._ ,,."' r -~ ,.. "'''' _„ ,,•F t ».. .._ .. yJ _..... f 9. v ff / 1 , t ( , jj f W, 1 , J L b I r , 4 {'/ 1 STEEP SLOPES PER / , , t f � , E ALBE AR LE M w t � srpft 1 n j< r y7 `i / F J � ✓ / p , COUNTY GIS / I ° { N" { s. '4 nf3 /✓ � 3 l F ti 3 � / J 0 � ti '� �4 ; ' } <!✓�,. t t i .,-. tt y"M*x, 1, t` Y1 PROJECT AREA '�a �-lY ii1 ^-' <F ✓%'' _gP f t ,. S i1�. k t f X , / E DAM 1 •d ' ; l 'f fi ,} —t' EXISTING% POND j ,z i 3 aF _ - ? s k / J r� t j >b j ,.. n % , i , KEY :7 } ' ,r``\'0\�� I ,'14 ,. ,,µ,,,3 `£ q t i,f4 f,; {kI ;,•.. . MANAGED TURF y } j IMPERVIOUS AREA STEEP SLOPES NON —HATCHED AREAS ARE WOODED `'� ' '+ EXISTING POND WSE = 495.0 PERMANENT POOL = 496.50 TOP OF DAM = 501.5 Q2=69 CFS 2-YEAR POND WSE = 497.08 Q10=275 CFS 10-YEAR POND WSE = 498.26 Q100=850 CFS 100-YEAR POND WSE = 500.47 (1' FREEBOAAD) * BASEFLOW ASSUMED TO BE +- 2"41 OVER SPILLWAY BASED ON SITE OBSERVATIONS. BASED ON A 1.5% SLOPE OF THE FEEDING STREAM CHANNEL, RAISING THE POND WATER SURFACE BY 1.5' IS EXPECTED TO IMPACT APPROXIMATELY 100 FEET OF STREAM CHANNEL. NO MITIGATION IS REQUIRED. TFALL STATEMENT THE NEW POND OVERLAND SPILLWAY WEIR AND EXIT CHANNEL CONNECTS TO THE EXISTING SPILLWAY CHANNELTHAT HAS BEEN CUT INTO ROCK. REFER TO SECTION B-B ON SHEET 4 FOR DETAILS AND CALCULATIONS. COMPUTATIONS ON SHEET 4 INDICATE THE ADEQUACY OF THE EXISTING CHANNEL TO CONVEY THE 2, 10 AND 100-YEAR STORM FLOWS. SINCE THE SPILLWAY HAS EXISTING ROCK AS A LINER AND NO INCREASE IN STORMWATER RUNOFF IS ANTICIPATED, NO ADDITIONAL LINING IS REQUIRED AND NO SIGNIFICANT EROSION OF THE CHANNEL IS ANTICIPATED. THE EXISTING SPILLWAY CHANNEL FLOWS PARALLEL TO THE RIGHT -SIDE EMBANKMENT FILL LINE AND FLOWS TOWARDS THE SOUTHEAST BEGINNING AT POINT APPROXIMATELY40 FEET FROM THE DOWNSTREAM EMBANKMENT TOE OF SLOPE. VISUAL INSPECTION INDICATES A WELL -STABILIZED NATURAL OUTFALL CHANNEL FROM THAT POINT DOWNSTREAM. SINCE THERE WILL BE NO INCREASE IN STORMWATER RUNOFF FOLLOWING THIS DEVELOPMENT, NO ADDITIONAL ANALYSIS OF THE DOWNSTREAM CHANNEL IS REQUIRED. IN THE EVENT OF A 100-YEAR STORM, THERE WILL BE AT LEAST ONE FOOT OF FREEBOARD FROM THE POND WATER SURFACE ELEVATION AND THE TOP OF DAM. THE EXISTING SPILLWAY CHANNEL IS ADEQUATE TO CONVEY THE 100-YEAR STORM WITHIN ITS BANKS. NO ADVERSE IMPACTS TO DOWNSTREAM PROPERTIES ARE ANTICIPATED. DRAINAGE MAI 11 ___ E — f / { l zom"a y 0 500 1000 1500 SCALE: 1 "=500' REVISIONS # DESCRIPTION DATE 1 COUNTY COMMENTS 7/17/2019 2 COUNTY COMMENTS 7/22/2019 owner: ��� a�.I �V,1>1 x > ,i or iowner: AKIN AND LAUREN SIME i 130 NEW YORK TRACE GREENWOOD, VA 22943 engineer: gI 30 SCALE, LLC 871 JUSTIN DRIVE rx PALMYRA, VA 22963 r�tx p: 434,242.2866 @ e: mike@30scale.com web: www.30scale.com �`1., s MOE %& sheet title: I f EXISTING CON a �a r'a ITI S t y�3 AND p DR AINAGE x� M z sheet # G t OF 6 I p3l w`^E x ,,a iive scale. P AS SHOWN date.- rfi 1 3 x � ra t r Frrrrr11r (r-),)n10 xncrmr //r STD# A8BREV. SYMBOL E&SPRACT|CE 3.02 @=71CONSTRUCTION ENTRANCE 3.03 �I \�� `_. ��Cn5 (OPTIONAL) [[>N3TRUCT|ONROAD STAB|L|ZAT|{}N(OPT|ONAL) 3.05 -X---X-- SILT FENCE 3.09 DIVERSION DIKE 3.31 \c1 TEMPORARY SEEDING 3.32 PERMANENT SEEDING 3.35 MULCH 3.36 SOIL STABILIZATION BLANKET/W1ATT|NG y«nJ ,AW` MUD TRAP \ \ � \ \ \ \ \ � \ \ \ ` ~ � \ \ � \ \ \ � \ \ \ ` ~, \ � \ \ ` ` \ L|K8IT8(�FCLEARING AND GRADING | | / EXISTING =49S0 . . KInTI: -'- ' - NORMAL TWP ~` THE''~^''' --- OF THE DAy�(SADEQUATE TOKHAJNTA|NTHE POND VV/gER NOTE: CONTRACTOR TOPROVIDE / ��' � 3URFACETHROUGHCONSTRUCT| N ADD|T|ON/\LGRAVEL ALONG / _ EXISTING GRAVEL ACCESS ROAD . . / ~� TODE��ARC/�'EA1ZX75 � CONSTRUCTION ENTRANCE. / / . no 5-0 am OM ON 001 RN EX.TREEUNE Autodo�k. lw�, DITCH ALONG DOWNSTREAM TOE (RIGHT ABUTMENT) Triangular Highlighted Side Slopes (z:1)=2.00k2,V8 Total Depth vu =/xm - =478,00 umue(%) =25,00 Wetted /myu = 1,66 Calculations Compute by: Known Q Known Q (cfs) mo -10-YEAR PEAK FLOW TO DITCH Elev<ft) .5 1 1,5 2 n � Reach (ft) rA- [�|T�A�1��h~UU�'|��0� ��..�~.. ".� ~~����~�����..��^"�^ 4� / TREE PRESERVATION ' ��� ��� �� LINIrFS'f�)IF CLEARING AND \GRADING . ' \ , I SILT FENCE LOW SIDE M OF RRO\0AmEA CLEARING O TREES IS \�� \ \ ~� PERMITTED '�INSIDE ^� r BUFFER CONTRACTOR \ = cn -- 8UFF�"UNEANDPROV|DE \ ' ~/ cn SILT FENCE BUFFER LINE �� y ASSHDVVN.`SILT FENCE |STO \ /\ ' SERVE A3TRE^ ROTECT|DN \ «` 01 um \ \ \ ���=�y��U AREA =~^p`"^~� °° � �800 SF \\ TREE RE5E �zm ^ ` \ ��F' :����j l_Y ) \ \ ` �� ' » T� ' ' EX. TREEU E \ \ '` CONSTRUCTION ROAD STAEIL'IZATION (CRS CONTRACTOR HAS THE OPTION TO USE COI ROAD STABILIZATION IN THE EVENT THAT T TRAVELWAY FROM THE BORROW AREA TO REQUIRES STABILIZATION. / ^, ~, '~ � � � LL1 0 \ \ \ �\ \ \ � � \ \\ \ \ \ \ \ \ __ __ / CE -~ -�`--EX. / APPROXIMATE LOCATION ' � � \ |— -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ��� � \� \ �` / \ / CONCRETE�WASHOUT �SHOUT / __'--- ^\ JI- \ \ ' � \ �\ CLEARING AND --� ' ^ > \ _ ' - / . GRADING / SF / \ / ' | v^ APPROX\MAT6LOCA[|ONOF u/ y ENT FILL / mV OE OF DO co u�) ^ /| \ "� / / \ \ TS TS\ \ / � (SF) \ ' \ \ � \\ � \/ / \ ' � \ � /\ \ / " �._'_`� ---�---' ��X\��ATE '����- ` | uuCAT(ONSP CHANNEL '/ / /' ~~-~~- / �� ' | /M ~" U�EEC-2 ~~~�HUNiNFj `' /u//� `] � � , 7p' EROSION AND SE��U��E��T CONTROL PLAN PHASE owner: AR|NAND LAUREN3|ME l3ONEVVYORKTRACE GREENWOOD, VA22943 engineer: 3OSCALE, LLC 871]UST|NDRIVE PALMYR/,VA22963 p:434.343.3866 e: nnike@30ocale.cono web: www.30scale.com © 2019 - 30 SCALE, LLC EROSION AND SEDIMENT CONTROL LEGEND STD# ABBREV. SYMBOL E&S PRACTICE 3•02 CE C= CONSTRUCTION ENTRANCE 3.03 cRs cRs CONSTRUCTION ROAD STABILIZATION (OPTIONAL) 3.05 SF X-X- SILT FENCE 3.09 DD10 DIVERSION DIKE 3.31 TS Ts TEMPORARY SEEDING 3.32 PS Ps PERMANENT SEEDING 3.35 NIU nnu MULCH 3.36 BEM SOIL STABILIZATION BLANKET/MATTING MT MUD TRAP Elev (ft) 464M 483.00 480M 479.00 TOP OF DAM = 501.5 4:1 CONSTRUCT GROUTED RIP -RAP TO EL = 499.5 Section 62' 20' LEVEL SPILLWAY -10-YR WSE = 498.26' -2-YR WSE = 497.08' �- SPILLWAY EL = 496.3 PROPOSED OVERLAND SPILLWAY CONTROL SECTION Depth (ft) 4.00 3.00 2.00 1.00 a.ov AM Reach (ft) CROSS-SECTION .71 EX. I >-EEELl N E _- � .4 \ LIMITS OF CLEARING AND i GRADING \ \ NOTE: CONTRACTOR TO PROVIDE' ADDITIONAL GRAVEL ALONG EXISTING GRAVEL ACCESS ROAD TO DEMARCATE A 12' X 75' CONSTRUCTION ENTRANCE. Mill CE OVERLAND . PILLVi AY - <Y A . PEAK FLOW EX. GRADE 18" GROUTED CLASS 1 RIP -RAP FILTER FABRIC 4" 21-A STONE Trapezoidal Highlighted Bottom Width (f() = 8,00 beptla (fi) 0,7 Side Slopes (Z:.1). = 2,00t 2100 a (cis) _ 0. Total Depth (fl) = 3,00 Area (sgft) 6.91 Invert Elev (ft) 480.00 .00 Velocity (fvs) � 9.9 Slope ("M = f3. o wetted Perini (ft) 11,2 N-Varna Crit Depth, Yc (£t), 1,20 "f'dfs a�didttt (ft) -° 1tt;9 al2ulationg EQt_ & 3 . Compute by: Known Q; Known 0 (ors) - 59,t�tt �--® 2-YEAR PEAK FLOW (SEE H&H CALCS) OVERLAND SPILLWAY -:10-YEAR PEAK FLOW Trapezoidal, Hlghllghie Bottom Width R = 8M Depth (ft) 1.�( Side Slopes W) = 2.0, 2,QID 274 Total Depth (it) = 3,00 Area (sgft) = 17.f Invert Elev (ft) = 480,00 Velocity(it[$) = 1 ,u Slopes .00 Welted Perim (it) = 15.t N-Value 0.030 Crit Depth, Y. 00 2,69 Top. WlOtfa (,ft} 14 llculatio Calculations EGL (it), Vma OFk � Known 0(cf) = 274.OQ --10-YEAR PEAK FLOW (SEE H&H CALCS) �4 OVERLAND SPILLWAY 100-YEAR PEAK FLOW E Trapezoidal highlighted Bottom Width (dt) = 8100 (ft) = 2.fxf: Side 810p,09 (2,1). w. 2.00, 9M Q (els) = 84�_rJ(l Total Depth (€t) = 100 Area (sgft) = 30,53 invert Etev (ft) = 0A00 ' eloc4y (ftls) = 2I A2 Slagsr� (°�,} w #.00 md+Iett��i Pecim (ftj - 2(P.�� 9-iialaxs ci.(230 brit fJepth, Ye Top wtdttm (It) M52 849,00-100-YEAR PEAK FLOW (SEE H&H CALCS) CHANNEL CALCULATIONS CONSTRUCTION ROAD STABILIZATION (CRS) NOTE: CONTRACTOR HAS THE OPTION TO USE CONSTRUCTION ROAD STABILIZATION IN THE EVENT THAT THE EXISTING TRAVELWAY FROM THE BORROW AREA TO THE DAM REQUIRES STABILIZATION. NEW POND PERMANENT POOL EL = 496.5 NEW DAM HEIGHT = 24.5' RAISE EXISTING DAM BY 1.5' TO TOP ELEV = 501.5 PROP. 25 SY CLASS 1 RIP -RAP CUT IN PROPOSED OVERLAND SPILLWAY TS PS -� o -so i APPROXIMATE LOCATION --`--� ...... ... .......... 4'an =9 IBMno i TREE PRESERVATION AREA Y ® yp l 18 �i s I 2% 0 1 5 13- +1 11EX LIMI`iS'QF CLEARING AND I GRADING 4 j rPROVIDE AND MAINTAIN 1 f SILT FENCE 0,,N LOW SIDE 1 OF BORROW AREA A j MOTE: IV'Q CLEARING OF TREES IS \ PERMITTED INSIDE 100, WPO X 0 BUFFER - CONTRACTOR TO STAKE \ � �1 j--16 EX 100' BUFFER LINE AND PROVIDE _ \ 3'1 �.J SILT FENCE ALONG BUFFER LINE s \ 0 5 AS SHOWN. 'SILT FENCE IS TO 12- t SERVE AS TRE6,PROTECTION X \\ 0 t MAINTAIN POSITIVE ® o +A1 1 EX g DRAINAGE TOWARD POND IN BORROW AREA If a , GE 3CROW AREA t 2,800 SF , TREE PRESERVATION AREA i . (-'1,300 CY) r- - EX. T l"tI:`E I E" J 1 1 � 3:1 �+ Ex \tl El ., SE `t e'frr r ,E { F g f } a3 dL t _ �r CONCRETE WASHOUT..._. ._."..__.".. .._._-_- e ._ _-__e_ -, �,;,;, - � '�� '°, t �� APPROX. 195 SY GROUTED '. 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SI9 DE ELEVATION 10, Hitt RAVEMRIT a '4 L VIEW OPERAOf F 1 GLUTp ACTION X0 Na4E-r a r: VESCH STD. 3.02 VESCH STD. 3.36 3,36 ITI A . .yak£ P�p�' ✓"d ip ,;i At�9,rd�01 yy -:f! !{nA Y�AXE JA 4—,}tl sy�atTy::.,. . ,9 £�,�;�„�"Wi i{4i��i O POSTS. 3 'AI H 1HE WER FABRIC To, r i' NINE FEIN�X- 41,40 Eklctz it 1�wra te )ismv, I'WO T 214 'i` �` iI- 'WIPE' )' S.�'9Yw:.i s�e3 ' 3� Y�&"ic.. Z' L,.4:XK, I;. SAC TREATMENT (VDOT STD. EC- ) VESCH STD. 3.36 REVISIONS # DESCRIPTION DATE 1 COUNTY COMMENTS 7/17/2019 2 COUNTY COMMENTS 7/22/2019 >c i. owner: I! ARIN AND LAUREN SIME 130 NEW YORK TRACE GREENWOOD, VA 22943 3 engineer: 30 SCALE, LLC _871 JUSTIN DRIVE PALMYRA, VA 22963 fi p: 434.242.2866 ' e: mike@30scale.com fF �F web wwW 30scale Corn 'a a ,i`"f%y� � � .�4G `91 .m, .�.F', & vla �5 6, L R OZ6 g Y LU i i cc 0 1 r} X YGY� F// J' G 3 1 1 s� M.1 l3 LLJ IN yid d l s N s lE n% rX I p wry G s /r F ¢fi .'1 yf CL gg LU �r �j U 3 � 3 V) , } LU i "y V) a'r <''� 14� � 13 J L J /Yt t 7h T . 4JrrF,.,4,, Rll4�'r,.10 �✓£:<: mll;",,, ✓,,, ✓r,✓� , Xrf ^?.., MBR gG� spy X GG 5 ,5 IN s �i'.ixr ..:,.1�crr� G9 y.,>..M,;,, ,li ✓s.,h,.:;�„=i; F, sheet title: EROSION AND jf ' t F£ s W.JUV II Rk-JL DETAILS sheet a scale: NTS F date: 5/31/2019 ry © 2019 - 30 SCALE, LLC PROJECT DESCRIPTION THE PURPOSE OF THIS PROJECT IS TO PERFORM MAINTENANCE OF THE EXISTING DAM LOCATED ON THE SUBJECT 11.7-ACRE PROPERTY (ZONE: RURAL AREA) ATTAX MAP 698-46 IN THE GREENWOOD AREA OF ALBEMARLE COUNTY. THE EXISTING 3.5-ACRE POND DRAINS APPROXIMATELY 318-ACRES OF UPSTREAM DRAINAGE AREA. THE DAM IS NOT REGULATED BY DCR SINCE THE DAM HEIGHT IS UNDER 25 FEET. THE DAM MAINTENANCE WORK WILL INCLUDE RAISING THE DAM BY APPROXIMATELY 18" AND RE -GRADING THE DOWNSTREAM EMBANKMENT TO 3H:1V. THE APPROXIMATE 1,400 CY OF FILL NEEDED FOR THE DAM MAINTENANCE WORK WILL BE TAKEN FROM AN ONSITE BORROW AREA LOCATED ADJACENT TO AND NORTH OF THE DAM, THE EXISTING 4" PRINCIPAL SPILLWAY IS NOT OPERATIONAL AND WILL BE ABANDONED IN PLACE, AND FLOW FROM THE POND WILL BE CONTROLLED BY WAY OF A NEW COMBINED PRINCIPAL/EMERGENCY OVERLAND SPILLWAY. AVIRGINIA EROSION AND SEDIMENT CONTROL PROGRAM (VESCP) PERMIT IS REQUIRED FOR THE WORK SINCE THE DISTURBED AREA WIL BE GREATER THAN 1 ACRE. THE WORK IS EXEMPT FROM THE REQUIREMENTS OF THE VIRGINIA STORMWATER MANAGEMENT PROGRAM PERMIT REQUIREMENTS OF 17-303 (G) OF THE ALBEMARLE COUNTY CODE. ALBEMARLE COUNTY IS A VSMP AUTHORITY. EXISTING CONDITIONS THE PROPERTY IS CURRENTLY DEVELOPED WITH A SINGLE-FAMILY DWELLING AND IS LOCATED IN THE RURAL AREA OF ALBEMARLE COUNTY. THE SITE IS WOODED WITH A CLEARED AREA FOR THE HOUSE, YARD AND POND. WITHIN THE PROPOSED PROJECT AREA, THE SITE IS MOSTLY CLEARED, WITH SOME TREES IN LOCATIONS AS SHOWN ON THE EXISTING CONDITIONS PLAN. FLOW FROM THE SITE GENERALLY FLOWS TOWARDS THE EXISTING POND, AND THE OUTFALL FOR THE POND FLOWS TO THE SOUTHEAST TO AN EXISTING STREAM. ADJACENT AREAS THE SITE IS BORDERED BY ADJACENT RURAL PROPERTY ON ALL SIDES. SOIL DESCRIPTIONS THE DAM AND BORROW AREA ARE CHARACTERIZED BY 36D AND 37D3 (HAYESVILLE) SOILS PER THE NRCS SOILS REPORT. THE HAYESVILLE SOILS BELONG TO THE B HYDROLOGIC SOILS GROUP AND APPEAR TO BE SUITABLE FOR DAM FILL MATERIAL. THE CONTRACTOR SHALL ENSURE THAT ANY EXCAVATED MATERIALS USED TO FLATTEN THE POND EMBANKMENT MAY BE PROPERLY COMPACTED. CRITICAL AREAS 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 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 FILE. SHALL BE INERT MATERIALS ONLY, FREE OF ROOTS, STUMPS, WOOD, RUBBISH, AND OTHER DEBRIS. 12. BORROW OR WASTE AREAS ARE TO BE RECLAIMED WITHIN 7 DAYS OF COMPLETION PER ZONING ORDINANCE SECTION 5.1.28. 13. ALL INERT MATERIALS SHALL BE TRANSPORTED IN COMPLIANCE WITH SECTION 13-301 OF THE CODE OF ALBEMARLE. 14. BORROW, FILL OR WASTE ACTIVITY INVOLVING INDUSTRIAL -TYPE POWER EQUIPMENT SHALL BE LIMITED TO THE HOURS OF 7:00 AM TO 9:00 PM. 15. BORROW, FILL OR WASTE ACTIVITY SHALL BE CONDUCTED IN A SAFE MANNER THAT MAINTAINS LATERAL SUPPORT, OR ORDER TO MINIMIZE ANY HAZARD TO PERSONS, PHYSICAL DAMAGE TO ADJACENT LAND AND 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. THERE ARE AREAS OF STEEP SLOPES ON THE PROPERTY AS SHOWN ON ALBEMARLE COUNTY GIS. THESE SLOPES WILL BE CONSTRUCTION SEQUENCE PROTECTED DURING CONSTRUCTION BY THE IMPLEMENTATION OF EROSION AND SEDIMENT CONTROL MEASURES DESIGNED IN ACCORDANCE WITH THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK (VESCHB). ANTICIPATED START DATE: AUGUST 2019 ANTICIPATED COMPLETION DATE: SEPTEMBER 2019 EROSION AND SEDIMENT CONTROL MEASURES PHASE 1 WORK ALL EROSION AND SEDIMENT CONTROL PRACTICES WILL BE CONSTRUCTED AND MAINTAINED IN ACCORDANCE WITH THE MINIMUM STANDARDS AND SPECIFICATIONS IN THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK UNLESS 1. INSTALL CONSTRUCTION ENTRANCE AS SHOWN ON PLAN. OTHERWISE DIRECTED BY THE ALBEMARLE COUNTY INSPECTIONS DEPARTMENT. THE FOLLOWING EROSION AND SEDIMENT 2. ENSURE CUT -IN SPILLWAY IS OPERATING PROPERLY AND IS CLEAR OF DEBRIS. CONTROL PRACTICES (VESCHB REFERENCE NUMBER INCLUDED) MAY BE IMPLEMENTED WITH THIS PLAN AND IS NOT AN 3. INSTALL SILT FENCE, MUD TRAPS AND STORM WATER CONVEYANCE CHANNEL AS SHOWN ON PLAN. EXHAUSTIVE LIST: 4. CLEAR AND GRUB OF THE DOWNSTREAM DAM SLOPE AND THE BORROW AREA. 5. ONCE THE PROJECT AREA IS CLEARED AND GRUBBED, THE CONTRACTOR MAY PROCEED TO PHASE 2 CONSTRUCTION. VESCH REFERENCE# 3.01- SAFETY FENCE (SAF) A PROTECTIVE BARRIER INSTALLED TO PREVENT ACCESS TO AN EROSION CONTROL MEASURE. LOCATION AND DETAILS ARE PHASE 2 WORK SHOWN ON THE PLANS. 3.02 - TEMPORARY CONSTRUCTION ENTRANCE (CE) A CONSTRUCTION ENTRANCE SHALL BE PROVIDED AT THE ENTRANCE OF THE PROJECT SITE TO PROVIDE A MEANS OF REMOVING SEDIMENT FROM THE TIRES OF CONSTRUCTION VEHICLES LEAVING THE WORK SITE. THE CONTRACTOR SHALL REMOVE ANY MUD FROM THE EXISTING ROAD SURFACE BY MEANS OF SWEEPING AND SHOVELING, IN THE EVENTTHE WASH AREA IS NOT ADEQUATE IN SEDIMENT REMOVAL. 3.03 - CONSTRUCTION ROAD STABILIZATION (CRS) THE TEMPORARY STABILIZATION OF ACCESS ROADS, SUBDIVISION ROADS, PARKING AREAS, AND OTHER ONSITE VEHICLE TRANSPORTATION ROUTES WITH STONE IMMEDIATELY AFTER GRADING. 3.05 - SILT FENCE (SF) SILT FENCE IS TYPICALLY INSTALLED AS A FIRST STEP IN CONSTRUCTION ACTIVITIES. LOCATION AND DETAILS ARE SHOWN ON THE PLANS. 3.07 - INLET PROTECTION (IP) A SEDIMENT FILTER OR AN EXCAVATED IMPOUNDMENT AREA AROUND A STORM DRAIN DROP INLET OR CURB INLET TO MINIMIZE SEDIMENT FROM ENTERING THE STORM DRAINAGE SYSTEMS PRIOR TO PERMANENT STABILIZATION OF THE DISTURBED AREA. 3.09 - DIVERSION DIKE (DID) A RIDGE OF COMPACTED SOIL OR LOOSE ROCK OR GRAVEL CONSTRUCTED ACROSS DISTURBED RIGHT-OF-WAY AND SIMILAR SLOPING AREAS, LOCATION AND DETAILS OF THE RIGHT OF WAY DIVERSION ARE SHOWN ON THE PLANS. 3.14 -TEMPORARY SEDIMENT BASIN (SB) A TEMPORARY SEDIMENT BASIN WILL BE INSTALLED BEFORE SITE GRADING BEGINS, FOR THE PURPOSE OF DETAINING SEDIMENT -LADEN RUNOFF FROM DISTURBED AREAS. A SEDIMENT BASIN CONSTRUCTED WITH BLOCK D2 - PHASE ONE WORK IS EXISTING AND IS LOCATED ON PHASE TWO. 3.31 - TEMPORARY SEEDING (TS) TO THE MAXIMUM EXTENT POSSIBLE, TEMPORARY SEEDING SHALL BE APPLIED TO DENUDED AREAS THAT REMAIN DORMANT FOR 7 DAYS. SEEDED AREAS SHALL BE LIMED WHEN NECESSARY AT A RATE OF 2 TONS/ACRE, AND FERTILIZED AT A RATE OF 600 LBS/ACRE OF 10-20-10 (14 LBS. PER 1,000 SQUARE FEET) OR EQUIVALENT. CONTRACTOR SHALL SELECT TEMPORARY SEEDING PLANT MATERIALS FROM TABLE 3.31-B OR C FROM THE VESCH. 3.32 - PERMANENT SEEDING (PS) A PERMANENT VEGETATIVE COVERING SHALL BE ESTABLISHED ON DISTURBED AREAS WITHIN 7 DAYS OF BEING BROUGHT TO FINAL GRADE AND THAT WILL NOT BE PAVED OR OTHERWISE BUILT UPON. CONTRACTOR TO SELECT THE PERMANENT SEEDING MIXTURE IN ACCORDANCE WITH THE SPECIFICATIONS IN THE VESCH. 3.35 - MULCHING (MU) ALL SEEDED AREAS SHALL BE MULCHED WITH STRAW IMMEDIATELY FOLLOWING SEEDING OPERATIONS. STRAW MULCH SHALL BE APPLIED AT A RATE OF 1.5 TO 2 TONS/ACRE. OTHER ALTERNATIVES MAY BE SELECTED FORM TABLE 3.35-A OF THE VESCH. EROSION AND SEDIMENT CONTROL MEASURES- MAINTENANCE 1. THE CONSTRUCTION ACTIVITY OPERATOR OR HIS DESIGNEE, SHALL INSPECT ALL EROSION AND SEDIMENT CONTROL DEVICES IN ACCORDANCE WITH THE SCHEDULE PROVIDED IN THE GENERAL CONSTRUCTION PERMIT. IT IS RECOMMENDED THAT DEVICES BE CHECKED EACH DAY AND CERTAINLY AFTER EACH RAIN EVENT, AND THAT REPAIRS ARE MADE IMMEDIATELY AND AREAS ARE RE -SEEDED AND MULCHED AS APPROPRIATE. 2. ALL SEDIMENT -TRAPPING DEVICES AND FENCES SHALL BE CLEANED OUT AT 50 PERCENT CAPACITY OR HEIGHT, AND SEDIMENT SHALL BE DISPOSED OF BY PUMPING INTO A SILT -SACK OR OTHER APPROVED MEANS. 3. GRAVEL OUTLETS SHALL BE CHECKED REGULARLY FOR SEDIMENT BUILDUP AND BE CLEANED WHEN SEDIMENT IS VISIBLY CLOGGING THE VOID SPACES. 4. DIVERSIONS SHALL BE CHECKED TO ENSURE PROPER RE-ROUTING OF DRAINAGE. DAMAGES THAT INTERRUPT THE EFFECTIVE FUNCTIONING OF THE DIVERSION SHALL BE REPAIRED IMMEDIATELY. 5. ALL SEEDED AREAS SHALL BE INSPECTED REGULARLY TO ENSURE THAT A VEGETATIVE COVER IS BEING ESTABLISHED. IN THE EVENT THAT THE SEEDING DOES NOT TAKE, CONTRACTOR TO TROUBLESHOOT AND TAKE REMEDIAL ACTION UNTIL THE APPROPRIATE VEGETATIVE COVER IS ESTABLISHED. 1. BEGIN FILL OPERATIONS OF APPROXIMATELY 1,400 CY FROM BORROW AREA ON THE EXISTING 2:1 DAM SLOPE. 2. CONSTRUCT A DIVERSION DITCH ALONG THE TOE OF THE DAM FILL ALONG THE RIGHT ABUTMENT AND LINE WITH EC-2. (APPROXIMATELY 130-LF) 3. GRADE OVERLAND SPILLWAY AND INSTALL CONCRETE KEYWAY FOOTER WEIR. 4. INSTALL 4" 21-A STONE, FILTER FABRIC AND GROUTED CLASS 1 RIP -RAP ON SPILLWAY CONTROL SECTION AND TO TIE GROUTED RIP RAP IN TO THE EXISTING SPILLWAY CHANNEL. 5. INSTALL 4" 21-A STONE, FILTER FABRIC AND CLASS 1 RIP RAP ON SPILLWAY APPROACH UPSTREAM OF CONCRETE FOOTER WEIR. 6. CONSTRUCT 3' HEIGHT CL 2 RIPRAP DIVERSION DIKE PARALLEL TO DAM TOE ALONG SPILLWAY CHANNEL, HAND PLACE CL 1 RIPRAP IN CL 2 RIPRAP DIVERSION VOIDS WERE APPLICABLE. (APPROXIMATELY 80-LF) 7. RESPREAD AVAILABLE TOPSOIL ON NEW DAM SLOPE AND BORROW AREA. SEED, FERTILIZE AND LIME DAM SLOPE, BORROW AREA AND ANY DISTURBED AREAS WITH ADEQUATE RATES TO ESTABLISH ADEQUATE VEGETATIVE STABILIZATION. BORROW AREA IS TO BE LEFT AS A LEVEL PAD WITH A 1-2% CROSS SLOPE TO DRAIN. MAXIMUM CUT SLOPES IN BORROW AREA ARE TO BE NO STEEPER THAN 3:1. 8. REMOVE TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES ONCE ALL DISTURBED AREAS HAVE BEEN STABILIZED. ALBEMARLE COUNTY BORROW STOCKPILE/BORROW AREA REQUIREMENTS FROM CHAPTER 32 SECTION 5.1,28b: 1. ALL INERT MATERIALS SHALL BE TRANSPORTED IN COMPLIANCE WITH SECTION 13-301 OF THE CODE OF ALBEMARLE. BEFORE A TRANSPORTING VEHICLE LEAVES THE PARCEL OR PARCELS ON WHICH THE BORROW, FILL OR WASTE AREA IS LOCATED, IT SHALL BE CLEANED SO THAT NO INERT MATERIALS OUTSIDE OF THE VEHICLE'S LOAD -BED CAN BE DEPOSITED ON A PUBLIC STREET. 2. THE BORROW, FILL OR WASTE AREA AND THE ACCESS ROADS THERETO SHALL BE TREATED OR MAINTAINED TO PREVENT DUST OR DEBRIS FROM BLOWING OR SPREADING ONTO ADJACENT PROPERTIES OR PUBLIC STREETS, DEPENDING ON THE ANTICIPATED INTENSITY AND DURATION OF THE ACTIVITY AND THE CHARACTER OF THE DEVELOPMENT OF ADJOINING PROPERTIES, THE PROGRAM AUTHORITY MAY REQUIRE SETBACK, FENCING AND LANDSCAPING REQUIREMENTS AS DEEMED APPROPRIATE, BUT WHICH SHALL NOT EXCEED THE REQUIREMENTS OF SECTIONS 30.4.6, 30.4.7 AND 30.4.9 OF THIS CHAPTER. 3. BORROW, FILL OR WASTE ACTIVITY INVOLVING INDUSTRIAL -TYPE POWER EQUIPMENT SHALL BE LIMITED TO THE HOURS OF 7:00 A.M. TO 9:00 P.M., EXCEPT IN CASES OF A PUBLIC EMERGENCY DECLARED PURSUANTTO SECTION 2-1003 OF THE CODE OF ALBEMARLE. 4. 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. 5. THE PLACEMENT OF FILL OR WASTE SHALL BE COMPLETED WITHIN ONE (1) YEAR OF ITS COMMENCEMENT, EXCEPT FOR RECLAMATION ACTIVITIES AND ANY OTHER ACTIVITIES ASSOCIATED WITH THE FINAL STABILIZATION OF THE AREA. THE PROGRAM AUTHORITY MAY EXTEND THE DATE OF COMPLETION UPON THE WRITTEN REQUEST OF THE APPLICANT, DEMONSTRATING THAT FACTORS BEYOND THE CONTROL OF THE APPLICANT PREVENTED THE COMPLETION WITHIN THE ONE-YEAR PERIOD. THE PROGRAM AUTHORITY MAY THEN EXTEND THE PERMIT FOR A PERIOD OF TIME THAT, IN ITS SOLE DISCRETION, IS DETERMINED ADEQUATE TO COMPLETE THE WORK. 6. IN LIEU OF A PLAN OR NARRATIVE, THE PROGRAM AUTHORITY MAY ACCEPT A CONTRACTUAL AGREEMENT BETWEEN THE VIRGINIA DEPARTMENT OF TRANSPORTATION AND ITS CONTRACTOR FOR A PUBLIC ROAD PROJECT; PROVIDED THAT THE PROGRAM AUTHORITY DETERMINES THAT THE AGREEMENT SATISFIES AT LEAST TO AN EQUIVALENT EXTENT THE REQUIREMENTS AND INTENT OF THIS SECTION. EROSION AND SEDIMENT CONTROL PLAN MINIMUM STANDARDS (PER 9VAC25-840-40) 1. PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS WITHIN SEVEN DAYS AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE. TEMPORARY SOIL STABILIZATION SHALL BE APPLIED WITHIN SEVEN DAYS TO DENUDED AREAS THAT MAY NOT BE AT FINAL GRADE BUT WILL REMAIN DORMANT FOR LONGER THAN 14 DAYS, OR 7 DAYS IF REQUESTED BY THE LOCAL INSPECTOR. PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE YEAR. 2. DURING CONSTRUCTION OF THE PROJECT, SOIL STOCK PILES 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. 3. A PERMANENT VEGETATIVE COVER SHALL BE ESTABLISHED ON DENUDED AREAS NOT OTHERWISE PERMANENTLY STABILIZED. PERMANENT VEGETATION SHALL NOT BE CONSIDERED ESTABLISHED UNTIL A GROUND COVER IS ACHIEVED THAT IS UNIFORM, MATURE ENOUGH TO SURVIVE AND WILL INHIBIT EROSION. 4. SEDIMENT BASINS AND TRAPS, PERIMETER DIKES, SEDIMENT BARRIERS AND OTHER MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AS A FIRST STEP IN ANY LAND -DISTURBING ACTIVITY AND SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE LAND DISTURBANCE TAKES PLACE. 5. STABILIZATION MEASURES SHALL BE APPLIED TO EARTHEN STRUCTURES SUCH AS DAMS, DIKES AND DIVERSIONS IMMEDIATELY AFTER INSTALLATION. 6. SEDIMENT TRAPS AND SEDIMENT BASINS SHALL BE DESIGNED AND CONSTRUCTED BASED UPON THE TOTAL DRAINAGE AREA TO BE SERVED BY THE TRAP OR BASIN. A. THE MINIMUM STORAGE CAPACITY OF A SEDIMENT TRAP SHALL BE 134 CUBIC YARDS PER ACRE OF DRAINAGE AREA AND THE TRAP SHALL ONLY CONTROL DRAINAGE AREAS LESS THAN THREE ACRES. B. SURFACE RUNOFF FROM DISTURBED AREAS THAT IS COMPRISED OF FLOW FROM DRAINAGE AREAS GREATER THAN OR EQUAL TO THREE ACRES SHALL BE CONTROLLED BY A SEDIMENT BASIN. THE MINIMUM STORAGE CAPACITY OF A SEDIMENT BASIN SHALL BE 134 CUBIC YARDS PER ACRE OF DRAINAGE AREA. THE OUTFALL SYSTEM SHALL, AT A MINIMUM, MAINTAIN THE STRUCTURAL INTEGRITY OF THE BASIN DURING A 25-YEAR STORM OF 24-HOUR DURATION. RUNOFF COEFFICIENTS USED IN RUNOFF CALCULATIONS SHALL CORRESPOND TO A BARE EARTH CONDITION OR THOSE CONDITIONS EXPECTED TO EXIST WHILE THE SEDIMENT BASIN IS UTILIZED. 7. CUT AND FILL SLOPES SHALL BE DESIGNED AND CONSTRUCTED IN A MANNER THAT WILL MINIMIZE EROSION. SLOPES THAT ARE FOUND TO BE ERODING EXCESSIVELY WITHIN ONE YEAR OF PERMANENT STABILIZATION SHALL BE PROVIDED WITH ADDITIONAL SLOPE STABILIZING MEASURES UNTIL THE PROBLEM IS CORRECTED. 8. CONCENTRATED RUNOFF SHALL NOT FLOW DOWN CUT OR FILL SLOPES UNLESS CONTAINED WITHIN AN ADEQUATE TEMPORARY OR PERMANENT CHANNEL, FLUME OR SLOPE DRAIN STRUCTURE. 9. WHENEVER WATER SEEPS FROM A SLOPE FACE, ADEQUATE DRAINAGE OR OTHER PROTECTION SHALL BE PROVIDED. 10. ALL STORM SEWER INLETS THAT ARE MADE OPERABLE DURING CONSTRUCTION SHALL BE PROTECTED SO THAT SEDIMENT -LADEN WATER CANNOT ENTER THE CONVEYANCE SYSTEM WITHOUT FIRST BEING FILTERED OR OTHERWISE TREATED TO REMOVE SEDIMENT. 11. BEFORE NEWLY CONSTRUCTED STORMWATER CONVEYANCE CHANNELS OR PIPES ARE MADE OPERATIONAL, ADEQUATE OUTLET PROTECTION AND ANY REQUIRED TEMPORARY OR PERMANENT CHANNEL LINING SHALL BE INSTALLED IN BOTH THE CONVEYANCE CHANNEL AND RECEIVING CHANNEL. 12. WHEN WORK IN A LIVE WATERCOURSE IS PERFORMED, PRECAUTIONS SHALL BE TAKEN TO MINIMIZE ENCROACHMENT, SEDIMENT TRANSPORT AND STABILIZE THE WORK AREA POSSIBLE DURING CONTROL SE EA TO THE GREATEST EXTENT PO UR G CONSTRUCTION. NONEROMBLE 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. 13. WHEN A LIVE WATERCOURSE MUST BE CROSSED BY CONSTRUCTION VEHICLES MORE THAN TWICE IN ANY SIX-MONTH PERIOD, A TEMPORARY VEHICULAR STREAM CROSSING CONSTRUCTED OF NONERODIBLE MATERIAL SHALL BE PROVIDED. 14. ALL APPLICABLE FEDERAL, STATE AND LOCAL REQUIREMENTS PERTAINING TO WORKING IN OR CROSSING LIVE WATERCOURSES SHALL BE MET. 15. THE BED AND BANKS OF A WATERCOURSE SHALL BE STABILIZED IMMEDIATELY AFTER WORK IN THE WATERCOURSE IS COMPLETED. 16. UNDERGROUND UTILITY LINES SHALL BE INSTALLED IN ACCORDANCE WITH THE FOLLOWING STANDARDS IN ADDITION TO OTHER APPLICABLE CRITERIA: A. NO MORE THAN 500 LINEAR FEET OF TRENCH MAY BE OPENED AT ONE TIME. B. EXCAVATED MATERIAL SHALL BE PLACED ON THE UPHILL SIDE OF TRENCHES. C. EFFLUENT FROM DEWATERING OPERATIONS SHALL BE FILTERED OR PASSED THROUGH AN APPROVED SEDIMENT TRAPPING DEVICE, OR BOTH, AND DISCHARGED IN A MANNER THAT DOES NOT ADVERSELY AFFECT FLOWING STREAMS OR OFF -SITE PROPERTY. D. MATERIAL USED FOR BACKFILLING TRENCHES SHALL BE PROPERLY COMPACTED IN ORDER T O O MINIMIZE EROSION AND PROMOTE STABILIZATION. E. RESTABILIZATION SHALL BE ACCOMPLISHED IN ACCORDANCE WITH THIS CHAPTER. F. APPLICABLE SAFETY REQUIREMENTS SHALL BE COMPLIED WITH. 17. WHERE CONSTRUCTION VEHICLE ACCESS ROUTES INTERSECT PAVED OR PUBLIC ROADS, PROVISIONS SHALL BE MADE TO MINIMIZE THE TRANSPORT OF SEDIMENT BY VEHICULAR TRACKING ONTO THE PAVED SURFACE, WHERE SEDIMENT IS TRANSPORTED ONTO A PAVED OR PUBLIC ROAD SURFACE, THE ROAD SURFACE SHALL BE CLEANED THOROUGHLY AT THE END OF EACH DAY. SEDIMENT SHALL BE REMOVED FROM THE ROADS BY SHOVELING OR SWEEPING AND TRANSPORTED TO A SEDIMENT CONTROL DISPOSAL AREA. STREET WASHING SHALL BE ALLOWED ONLY AFTER SEDIMENT IS REMOVED IN THIS MANNER. THIS PROVISION SHALL APPLY TO INDIVIDUAL DEVELOPMENT LOTS AS WELL AS TO LARGER LAND -DISTURBING ACTIVITIES. 18. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS AFTER FINAL SITE STABILIZATION OR AFTER THE TEMPORARY MEASURES ARE NO LONGER NEEDED, UNLESS OTHERWISE AUTHORIZED BY THE 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 SEDIMENTATION. 19. PROPERTIES AND WATERWAYS DOWNSTREAM FROM DEVELOPMENT SITES SHALL BE PROTECTED FROM SEDIMENT DEPOSITION, EROSION AND DAMAGE DUE TO INCREASES IN VOLUME, VELOCITY AND PEAK FLOW RATE OF STORMWATER RUNOFF FOR THE STATED FREQUENCY STORM OF 24-HOUR DURATION IN ACCORDANCE WITH THE 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. THE SITE COMPLIES WITH MS-19. RE VISION # DESCRIPTION DATE 1 COUNTY COMMENTS 7/17/2019 2 COUNTY COMMENTS 7/22/2019 owner: ARIN AND LAUREN SIME 130 NEW YORK TRACE GREENWOOD, VA 22943 engineer: 30 SCALE, LLC 871 JUSTIN DRIVE PALMYRA, VA 22963 p: 434.242.2866 e: mike@30scale.com web: www.30scale.com sheet title: f@-g t� BI jR SI 3� IN A y 4 �55 E lKip T t� NT0 L A K RA i/ �� E F sheet # �y E 6 1 ^I scale: JNTSI I, date: ; as :I?I5/31/201 �,tf3 rarcz � r?Fr,r°r = r tir � ""�SbUr .T J�'et:.ea=ax'S �rr�.�f.�� _-t.�i.F ��Ftr' �,feriyFt ���,rFl�,ftas•: