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HomeMy WebLinkAboutWPO202200006 Plan - VSMP 2022-05-16 (2),TAN+ 1•MEWAR11 COLE ) S tMPOIL",.T SPECtALtSTS SITE DATA SITE PLAN NUMBER: LEGAL REFERENCE: SOURCE OF TITLE: PARCEL ADDRESS: OWNER/APPLICANT: MAP 45, PARCEL 10013 ALBEMARLE COUNTY. SDP2013000063, WP0201300075 TAX MAP 45, PARCEL 100B DB 4356, PAGE 399 660 RIO ROAD WEST KSR INVESTMENTS, LLC 943 GLENWOOD STATION LANE CHARLOTTESVILLE, VA 22901 ZONING: Cl - COMMERCIAL, EC -ENTRANCE CORRIDOR, AIA-AIRPORT IMPACT AREA MAGISTERIAL DISTRICT: RIO SOURCE OF BOUNDARY: DEED RECORDED IN DB 297, PAGE 5. SOURCE OF TOPOGRAPHY: 4-FOOT CONTOUR INTERVAL FROM ALBEMARLE COUNTY GIS MAPS (USGS DATUM). A VISUAL INSPECTION OF THE TOPOGRAPHY WAS PERFORMED BY TIMOTHY MILLER, L.S. ON MARCH 5, 2022 AND VERIFIED THAT IT IS CORRECT. PAVING SPECIFICATIONS: SURFACE MATERIAL-1 1/2" VDOT SM9.5A BASE MATERIAL - 6" VDOT #21A SIDEWALK SPECIFICATIONS: SIDEWALK - 4" CONCRETE BASE MATERIAL - 4" VDOT 57 CURRENT USES: VACANT PROPOSED USE: AUTOMOBILE REPAIR WITH 3 BAYS. ADT = 30 TPD. EXISTING BUILDING SHALL BE USED FOR STORAGE. SWM WATER QUALITY: ONSITE BIORETENTION - LEVEL 2. SHEETINDEX VIRGINIA C-400 ......... COVERSHEET C-401 ......... EXISTING CONDITIONS C-402 ......... GRADING, SWM & UTILITY PLAN C-403 ........ STORM DRAINAGE PROFILE & DETAILS C-404 ........ STORM WATER QUALITY DETAILS & CALCULATIONS C-405 ........ POA 1 HYDROLOGIC CALCULATIONS C-501 ........ EROSION CONTROL PLAN C-502 ........ EROSION DETAILS & NOTES LEGEND PP POWER POLE WM WATER MATER SSM SANITARY SEWER MANHOLE FFE FINSHED FLOOR ELEVATION TPD TELEPHONE PEDESTAL LP LIGHT POLE TOTAL AREA TO BE DISTURBED IS 0.50 ACRES 2 VICINITY MAP c-40 SCALE: 1 "= 1000' I I 1 / I I / 1 I I -- i 1 PARCEL OVERVIEW -40 SCALE: 1" = 50' \ \ \ / TMP 45-IOIB \ / AUTO, LLC- /- DB 2130-30 / USE: VACANT \\ ZONING: Cl • i �- " — ' - / ---------------- S. '-2!2812aLE - - _-_ --------- - - - -- - - 87.12------------------ ------ -$� pVC SEWER-----------7 Refer to 20' SANI ARY EASEMENT \ Sheets DB 1270-701 \ I I C-401 C-501 C-601 TMP 45-Iq011 I KSR I I TMP 45-IOOC TON DINH DB 36 1-52 USE: V CANT ZONI : Cl I I I , I I I I II I II I I I II I I I I 1 -------------- 280' To Berkmar Drive INVESTMENT I LL� 32,908 SIF 0.755 ACRIES DB 4356-�99 TMP 45-IOOA USE. VACANT JOHN THOMAS ZONING: P1 GREEN, ESTATE DB 297-544 USE: VACANT ZONING: Cl 00 STATE ROUTE 631 Rln .on A ^ -•-'ST BLIC R/yy I I I I 1 I I I I 1 I I I I I I I II I I I I I I I I I I r-1 I I r Ln I I I I I I I I I I I I I I I I I I I I I / / / / / / / 1 / oZ c'4o o Q m a m m U Z m cn � 0 U ui � Ld S U z �.5 O U U �S INN/ -I Z � FWmA d' rz U '0 Z W Utz Z Z`OU0 IZ W Z Z W z / o a- a - _ cn w a — - I I I I I / I I I I I 9 I s ' � I I I 'Y 50 0 50 100 150 SCALE: 1 "=50 0 z W N�y I-�-I a O F� J J es L J O L T l L �J SHEET NO Er, -I W u C-400 SHEET 1 of 8 _ Existing Treesl� i / i q ~ i MATCHLINE A x TREE& ° _ > \ < 2 SSM XXX TBRc x ;wo nopin87.478.94 X x x x x x� i Inv Out = 478_64 X X x X S' TMP 45-101B / X v i I �----- X x AUTO, LLC / \ \ -----492 �X x X xa ®N -DB 2130-30 \\ x z US -VACANT CANT �'� _ I\\ X X X X X N ZONING.-,Cr- \ \ xXx X x 04 - o z X X x X r7 2 X X xx X I N O fn Xx Existing Trees "� o ae Of x To Remain 496- X X X X X (1,900 SF) O H � m m m Existing Trees a X x x z ¢ ¢ \ \- x x x - - - - c \ \ To Remain o X x x X x _ - - - m � 0 0 \ \ \ x-X x \ \ (10,900 SF) o X x x x x — — — — — — � �_ v --- X X X I I ---- \ \ d X x X - w Easement - - - - x x L U X x x x I w = Sanitary 701 x x x X x X X \ \ X X x X x x I o \ I I \ DB 1270- I X I _ _ _ - _ _ _ \ \ x X x X x \ I I I------ x x X x l X X x I_--— i \ \ \ `� 00 X k X 11 \ _ X x lJ X x x4 � xbx� ] --- \ \\ \\ X X X X X X Z x x ---- - x X Xlx , . ' MATCHi�I E-A - \ \ ------ XXXXxX � z -_- ---- X X X TREES, x .= \ \�'---- XXXXxx � Z I\ SSM X X X TBR c x; a° \ ---- — X X X X x x \\ Top=487.54 X X X IX x x x� I \ \ �504 X X X X x x �- \ I Inv In = 478.94 X k x x x N I \ \ \ TMP 45-f00B x X x_x� p w I Inv Out = 478.64 x x x x I - \ \ \ KSR INVESTMENTS, LLC x X x X x _ _ \ �-------- o _ _--------- f \ \ I \ - 32,908 SF xxx I Zrn�oo \I\ ----492 �,+k X X I \ \ ��� ---_-- 0.755 ACRES X x x XXX \ X xlx x x x --- \ -DB 435$-31J$S x x x x x x \ V �m3 �\ \ X X I X I --_---- \ USE: VACANT 08� X x x \ r�k w�r5n`�d \ \ \\ \ \ I \\ x X lx X X X I \\ \ ZONING: Cl x x� X X X w co a X X x x _ \ _ F X X LX X X X I \ I \\ x X x X U x0w x r X z \ \\ ---512 X X x x x~ \ w Z o X X X X x � -- �x d \ a X N \ I Z�� X X X X X i X X x ., X X X x x \ \ W OOA TMP \ Xx XxxXSf6XX�xXx xXXXxxx \\\JOHNTHOMASGR1F`EN EST�4TE- a X x X X x X X X x X X x x�X X x x X X X x \\ USE VACANT Z W X ZONING: C1 X x X X X X X x X X x x X X X X X x x \\ \ — — — — i \\ XX18XX X X X X X X XXXx X X X X X X \ X x x x x x X X X x x x x x X X X x x TTON NH s20 X Ix XXxx X X XXXI X x X X X X X X x X------1 \ --- I DB 3651-52 IX X X X X X X x^X X X X x X X x I \\ I I I USE. VACANT X X X X X X X X X X X X X X X X X x X x x L _- - - - p ZONING: Cl X X I X X x x X X X X I X x X X X X x x I r X X x�M X X X x X X X X X X X X X\\X X X X X L x X X X �+c� x x I I / _X x x X X X X X x x XLXX �c X�X �CX x X X X x X\xxx L----J \ X X x X\ x x x x cfREES x x x\x X x x x x\ I xxx x X TBR xxx XX X X X X X X X XXXXX( X\XX /I I �524\ X X x X x X x X X X x X x x x X X X X x X x x X X x X X x x XXX x x x\ X X X \ \ x X 520— I x X X X X X X X x \ X X X X x z x x x Water Service x x \ x x x\ X 5 6 x x x X 'Portion to Bex X x X x X \ w X 'removed X x X ~ I,X X X X X X X R X X \ X X X X XX XXx XXXXX XXX I xx XXxx \ x I X X ��X x x x XXX X� x X x X X X X x X\ x X X X x X X X X x s S28 X X X X X X X x� X X X X X X X X X 24� i Xx x x x x x X yc X X x X X x x X x x x x x X X Xx x x x �i Z r- X x X x X X X x x x x x X xX=X a r----� X �`\ X xxxx X x it X X XIX X X X X X X X x X I U X X X X X \` C X X X X X x X X x x w X X X x X X x\ X X X X X X x x I I—� X X X v .. X-1X X X X X X X X X X x X Existing Tree x x x X x �530 X X x x x x X X X X X X X x X--- x x X -528- ` L I x x X X x x X X x x x x x x —\\ XX X X x X X\ X X X X X x X x o I_ X z XXx X x X x x xX� X X X I X \ \- I U) —__--_ X X X x x x x x x "13 in Setback x x x ---- X X x x X X X X X X X x X X x X X x \ X X X X x X X X X x X X x - 32 x xX� x x x x x, H X X X X x x X X X X x x\ . -- P X x x x x PSrkingx St^t Xck, x X X X X X x X X >. -- WM:'Tp M x, XxX 6 p t:: •I .. t \ O w .l I 1�1 .L �1 .. Al n ray' Hen^/H Si aik and Curb .I '. > s • .. •' W O eE� O TO > _ �e(noved Sawcut Line � ~ STATE ROUTE 63 Z 0 - - VARIABLEOROAD WIDTH WEST \ PUBLIC R — �--� E� W 9 / w U Q S>� - Left Turb Arrow ~ x °'t� •, To Be Era eated U W w a — .Y '• s . ,. �' .:. . SHEET NO. 20' 0 20' 40' 60' - - - - -401 SCALE: 1 "=20' — _ — — — — — _ — _ — — — _a SHEET 2 of 8 wMA Cj�G"' Top=487.54 / \ Inv In = 478.94 y I TMP 45-101B Inv Out = 478.64 AUTO, LLC -492 ��� \ \------------_-_ - _ P I ®S004 � ®Ns -DB 2130-30 \\ v. USP.-V CANT-_--- - N ZONIN .- -er N Existing Trees r7 < Of \ 4 __ - -_- / - - - ----------- To Remain - 49I o a 6- I (1,900 SF) o w w r r r ---� -- \ z ¢ a m m m oCn o I I 0 Q asement zLdoZ�_ 20Saniary 0YU o _ I � \ \ DB 1270-701 Connect Ipteral \ - - - - - to existin stub - 4ba_== �\ i -----_ ___ ----- I MATICHL-NEC \ ssM \ \ --- ------ \ \ \ \ \ I Top=487.54 I \ \ I \ TMP _-----\\ \ _-- S�504 4 $ 94 o KSR INVESTMENTS,, LLC Out 4864 o 3,08 F --- `80 4U . \\ \ ---_ ---------I---- \ \ -- (A 1I ��z DB �33839a o I \ I I G7 \ \ \ I I \ \\ ZONING: C1 USE.- VACANT508� > \ \ - - - > a m \ _ _ _ LANDSCAPE NOTES: \ \ _ _ I _ \ - - - E Cr) -� I \ I 1. SLOPES GREATER THAN 3:1 SHALL HAVE REDTOP PANICGRASS (panicum rigidulum) AND WILD \ - - - 512W '� � U� HYDRANGEA (hydrangea arborescens) PLANTED 6' ON CENTER. \ \ \ I�Ua -516� L \\ TMP -1OOA - -- W J JOHN THOMAS G EEN ESTAT-Y - a NOW Slf� \ DB 297-544 \ (See De(aif Basin \ \ USE: VACANT I Z C-404) \ ZONING: C1 W 14 I I I \ \ 4" Roof Drroin A _ l\ I I TMP 45-f00C '520 f - - - - - -TON I\�--- \ I I I IN52 I 1-Story Structure DB 36 \\ I I I I Storage Area USE: VACANT I I I FFE=524.38 L - - - - - ZONING: C1 F - I Hei ht=15' I TW17.51 I Imo' 9 " BW17.51 I �' z C24.0 m L - - - - - j TRooV rainTW21.0 I I s24 \ B .5- I New Water \ I S24 Service \ \ I � 520- New 1-Story Building TC26.0 I TC2r New Retaining Wall �- 2,500 SF TC25.0 TW23.0 BW21.0 With Handrail Max Hei ht=3.5' � � \ s26 FFE=525.50 � � 9 LLJ Height=20' New WP I TC25 8 New Backflow TW23.8 Q \ Preventer TC26.0 TC\ .8 BW23.8 o I r- - -I �I\ Office S FFE�530.80 526 S24 28 SOLPE GRATER THEN 3:1 _ Roof Drain SEE LANDSCAPE NOTE 1. v I Ir - - - - Jr TC30.95 TC30.7 TC 9.5 528 U \ \ TC TC29.5 C29.6 I � I I N w W 5.30 \ 95 �29' mployees Only' -528_ L I Service \ �� Sign 530TC3 I o 1.T 30T- TC30.8 \- z 532 TC 2.0 TC 2.0 �_ Z 1.4 P. \ e - - WM 532 I rr E� n V M T 32.1 \ W P r'�1-4 ench - - - FT --I �D X' In sidewalk Elev�53� �� No Left Turn' s�2 'No Entry' Sign y New Pavement Section shall _ _\Sign match existing pavement .ft STATE ROUTE 6 R sect' -- io�d - RIO ROAD WEST \ a - - - VARIABLE WIDTH PUBLIC R - � 9S -j Z LLJ C) C3 DI MAIN SHEET NO. C�402 20' 0 20' 40' 60' - SCALE: 1 "=20' - - -` SHEET 3 of 8 r - - - - - - - � - 1 1 New S (See % B C asia \ 1 \ 4p41 I r- - - - - - I I I \ \ -1I I TMP 45-f00C '520 \ II TON DINN I DB 9651-52 \\ I I USE., VACANT I- - - J ZONING: C1 I F- I - -I I I I-J jj� I r -__j 1 I I II I I I L__ I 1 o I 1-Story Structure �� I Storage Area I FFE=524.38 Height=l5' L New Water Service \ New 1-Story Building \ 2,500 SF FFE=525.50 Height-20' New 1 ew Backflow reventer ti Office r \i` - t - Draina,ea f \ST -3 \ \ TMP 4�$-f00A L \ \ JOXN TXOMAS GREEN_EsT-AyW ° \ DB 297- 44 \ USE•VACANT \ \ \ ZONING: Cf I I N EF I I New Retaining Wall With Handrail Max Height=3.5' Drainage Area for v STR-2 0.07 Acres -528- \ 741- loom STATE ROUTE VARIABRIO ROAD 1►EST \ _ ' MIDTX PUBLIC R/Ir, - DRAINAGE AREA FOR STORM STRUCTURES 0 SCALE: 1"=30' 535 530 525 520 515 510 505 500 495 490 485 475 0+00 STORM DRAINAGE PROFILE HORZ SCALE: 1"=20' VERT SCALE: 1"=5' STRUCTURE NUMBER DESCRIPTION LENGTH INVERT IN INVERT OUT SLOPE REMARKS 1 ES-1 NA 515.00 NA NA PIPE 1 15" HDPE 15.42' 518.40 515.00 22.70%% 2 DI-3A L=2.5' 518.50 518.40 NA IS-1 PIPE 2 15" HDPE 54.01 522.55 518.50 7.685o 3 DI 3A L=2.5' NA 522.55 NA SCC 1 V-DITCH 193.0' 516.00 484.70 16% RIP RAP LINING LD-229 Storm Drain Design Computations Route: Pro: Cole's Import Specialists County: Albemarle District: Desrrintiorc Pine C.alrulationa �� 1 1 1 •1 1 1• 1 1•� '® 1 .1 ®���®��� LD-204 Stormwater Inlet Computations Z 'C ¢ w 5 N N Z n a' O o a E w Y o 0• w X I?N x r0 2 p U m C3J v CL 2 N 5 do U o H 5 m an d o w c m U) E U U ¢E U U) 0 CS Cf 2 (9 a- C2 r CO o o C7 C! 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 (ft) lac) (iNhr) (c ) (cfs) (c ) C(') (T) cr) (ft) (ft) (cfs) (cfs) STR-2 DI-3A 2.5 0.07 0.90 0.06 4.0 0.25 0.00 0.25 0.016 0.01 0.020 0.0803 0.85 0.08 100% 0.25 0.00 STR-3 DI-3A 2.5 0.10 0.90 0.09 4.0 0.36 0.00 0.36 0.016 0.01 0.020 0.0803 1.09 0.09 100% 0.36 0.00 3 rn rn 4- Qt M cV N rl� � 2 + O N 7 � O ~ II oin o aj - � N Z O O 1 > Finished U) z z Grade o N o xisting / + I +w� o Grad / N 0 / _ CMU Block Wall N P HGL Top of Wall=519.50' / 5. 2-15, ® WEIR ELEV=515.70' / / SWM BASIN / / / / / / Existing / Grade / / / / / / / / / Finished / Grade / / / / / / / / / / / / / / 0 Exist 8" Sewer Inv = 477.2 0+50 1+00 1+50 2+00 2+50 3+00 535 530 525 520 515 510 505 500 495 490 485 Ell 475 - \ -------- --------------- -_ o \ \ 1 1 ------------------------ o to',) Q 1 \ x I � ______-iv \ \\ \\ I V✓0 \ -- ---------- - NO Z N I i N O fn � \ \ \ I \\ 33E rNresrYarwrs, uc �-. I � � f•r7 ui to 0_ �' \ \\ \ \ --------_-- 3P•3a3 3P 1 - �-__ C.7a ACeEv .I I \ \\ mwNm a --i_ I `\ __ ___J/ U I- J 07 ITl GO\ ------------- DA-M O . ■i- ---- --- z ¢ ¢ \ - U Z t] t] \ 1\ 0.06 AC. \\ IM to z Y --------------- r3orrAsycx's°a°,v,-_J O (n = \ ` �\ i3"�4W'aM �r ILLI VSE.. VACANT Il II rYP 46100C \ 34, P3m1\`___ / TON XNa I D3363r-sE +-sm,y sxxxun }____- / VSFVACAW SIuoP vim I I / x°`11-N°^'&i1*x 4 \\ ],YO IIM �_���/'/ I _`` \•M xtyN#tl Xw w+ I\ Y=WMM1l5 `- � I I 'K' E rl '�I co 00 ------- DA-N ----- o w ------- 0.32 AC. - - - _- UD x .4 w m U Z ------- - ----- \ ~� Z r a - - CO ir- -- � -Pu3Zm 3iwi _ /�2 DRAINAGE AREAS FOR ENERGY BALANCE CALCULATIONS 40Y SCALE: 1"=50' �I W z (n_4 W DESIGN NOTES: 1. Refer to Energy Balance Calculations for 1-year V-Shaped Channel Parameters SCC-1:1-year flow calculations U and 10-year flowrotes. 2. Plate 5-28 was used for V-Channel Parameters. e d Z Flow Depth Area R In slope velocity Q o- 3. Plate 5-31 was used to determine maximum 2.0 1.0 2.0 0.28 0.16 0.126 0.038 0.16 3.9 0.63 0 depth of flow is 0.44' using S=0.16 and d50=0.9. o V-Shaped Channel Parameters SCC-1: 10-year flow calculations E E DETAIL NOTES: e d Z Flow Depth Area R In slope velocity Q 1. See VESCH STD. & SPEC. 3.19, RIPRAP for additional details on filter cloth. 2.0 1.0 2.0 0.39 0.31 0.175 0.038 0.16 4.9 1.51 2. Rip -Rap shall be Class Al. c0 0 STORM WATER CONVEYANCE CHANNEL SCC-1 SCALE: 1 "=1' 91, sides) SHEET NO. C-403 SHEET 4 of 8 DEQ vrgioia Runoff Reduction Method Re -Development Compliance Spreadsheet - Version 3.0 02011 BMP Standards and Specifications o 2013 Draft BMP Standards and Specifications I Project Name: Cole's Import Specialists data input cel6 Date: 3/24/2022 constantvalues Linear Development Project? No calculation cells -site Information Project (Treatment Volume and Loads) Enter Total Disturbed Area (acres) --> 0.50 Pre-ReDevelopment Land Cover (acres) A Soils BSoils CSoils DSoils Totals Forest/Open Space (apes) -undisturbed forest/open Space 0.00 0.29 0.00 0.00 0.29 )Made Tud (acres)- disturbed, graded for yardsofothef Wrftobe mowed/managed 0.00 0.18 0.00 0.00 0.18 Ilmpervious Cover (acres) 0.03 0.00 0.03 0.00 0.00 Land Cover (acres) A Soils BSoils CSoils DSoils Totals Forest/Open Space (acres) - undisturbed, protected forest/open space or reforested land 0.00 0.00 0.00 0.00 0.00 Managed Turf (acres) - disturbed, graded for yards or other turfto be mowed/managed 0.00 027 0.00 0.00 027 Impervbus Cover (acres) 0.23 0.00 0.23 0.00 0.00 Area Check OK. OK. OK. DK. 0.50 I IConstants Annual Rainfall (inches) 43 Target Rainfall Event (inches) 1.00 Total Phosphorus (TP) EMC(mg/L) 0.26 ITotal Nitfogen(TN)EMC(mg/L) 1.86 Target TP Load Ilia/acre/yr) 0.41 Pj (unitless correction factor) 0.90 Runoff Coefficients IRV) Check BMP Design Specifications List: 2013 Draft Stills & Specs Linearproject? No Land rover areas entered correctly? ./ Total disturbed area entered? ASoils BSoils CSoils Dsc Forest/Open Space 0.02 0.03 0,04 0.is 05 Managed Turf 1 0.15 0.20 0.22 0.25 mpervious Cover 1 0.95 0.95 T95 0.95 Land Cover Summary -Pre Pre-ReDevelopment Listed Adjusted' Forest/Open Space Cover (acres) 0.29 0.09 weighted Rerforest) 0.03 0.03 %Forest 58% 30% Managed Turf Cover (acres) 0.18 0.18 Weighted Refund) 0.20 0.20 %Managed Turf 36% 60% Impervious Cover (acres) 0.03 0.03 lbrimpervious) 0.95 0.95 %Impervious 6% 10% Total Site Am (acres) 0.50 0.30 Site Rv 0.15 0.22 Treatment Volume and Nutrient Load Pre-ReDevelopment Treatment Volume (acre-ft) 0.0061 0.0056 Pre-ReDevelopment Treatment Volume (cubic feet) 266 244 Pre-ReDevelopment TP Load (lb/yr) 0.17 0.15 Pre-ReDevelopment TP Load per acre (lb/aue/yr) 0.33 D.51 Baseline TP Wad (lb/yr) (0.41 lbs/ace/yr applied to pre -red evelopm ent a ma exdu ding se our us land proposed for new impervious never) 0.12 ' Adjusted Land Cover Summary: Pre ReDeve eparmot land rover minus pervious land rover (foresVepen space or managed turf) acreage proposedfor new impervious cover. Adjusted total intercom is ronsisTorm with Post-ReDevelopment acreage (minus ace me of new impervious cover). Column I shows load reduction mouriement for new impervious cover (hosed on new development load limit, 0.41 @s/ate/year). Post ReDev. & New Impervious Forest/Open Space Cover (acres) 0.00 weighted Rv(forest) 0.00 %Forest 0% Managed Turf Cover (acres) 0.27 weighted Rv(turf) 0.20 %Managed Turf 54% Impervious Cover (acres) 0.23 Re impervious) 0.95 %Impervious 46% Final Site Am (acres) 0.50 Final Post Dev Site Rv 0.55 Treatment Volume 0.0227 (acre-ft) Treatment Volume 989 (cubic feet) Final Post- )evelopment TP Load 0.62 (lb/yr) Final Poo-Wvelopment TP Lead per aue 1.24 9b/ace/yr) Post-ReDevelopment Forest/Open Spare Cover (aaas) 000 Weighted Rv(forest) 0.00 %Forest 0% Managed Turf Cover acres) 027 Weighted Re (turf) 0.20 %Managed Turf W% ReDev. I mperviouS Cover (acres) 003 Rv(impefvious) 0.95 %Impervious 10% Total ReDev. Site Area (acres) 030 ReDev Site 0.28 Treatment Volfine and Nutrient Load Nitrogen Loads (Informational Purposes Only) PesbReDevelopmeM Treatment Volume 0.0069 (acre-ft) Post-ReDevelopment Treatment V olume (cubicfeet) Post-ReDevelopment Load OFF) 019 (lb/yd* Post-ReDevelopment TP In ad per acre 53 Ilia/eve/yr) Max. Reduction Required (Below Pre- Una, ReDevelopment Load) TP Load Reduction Required for 0.05 Redeveloped Area (lb/yr) I Site Results (Water Quality Compliance) Area Checks FOREST/OPEN SPACE (ac) IMPERVIOUS COVER (ac) IMPERVIOUS COVER TREATED (ac) MANAGED TURF AREA (ac) MANAGED TURF AREA TREATED (ac) AREA CHECK Land Cover Summary -Port Post -Development New Impervious New l mpervious Cover 0.20 (ace) Rv(irrmrvious) 0.95 Post -Development Treatment Volume 0.0158 (acre-ft) Post -Development Treatment Volume lcubk 690 Feet) Post-DcaelopmeM TP 0.43 Load(lb/yr) TP Load Reduction Required for New 0.35 Impervious Area (lb/yr) L LL F FF I II I FF F FF L LL F FI 111 F FF F FF L LL F FF 111 111 F FF L LL F FF 111 F FF F FF 1 11 F FF 111 F FF F FF Site Treatment Volume (ft3) Bse Runoff Reduction Volume and TP By Drainage Area RUNOFF REDUCTION VOLUME ACHIEVED (ft') TP LOAD AVAILABLE FOR REMOVAL (lb/yr) TP LOAD REDUCTION ACHIEVED (Ib/yr) TP LOAD REMAINING (lb/yr) D.A. A D.A. B D.A. C D.A. D D.A. E TOTAL 0 0 0 0 0 0 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 O.DO 0.00 0.00 0.00 0.00 0.00 0.00 0.00 NITROGEN LOAD REDUCTION ACHIEVED (lb/yr)l 0.00 1 0.00 1 0.00 0.00 1 0.00 10.00 Total Phosphorus FINAL POST-DEVELOPMENTTP LOAD(lb/yr) 0.62 TP LOAD REDUCTION REQUIRED Ilia/yr) 0.40 TP LOAD REDUCTION ACHIEVED (lb/yr) 0.00 TP LOAD REMAINING (lb/yr): 0.62 REMAINING TP LOAD REDUCTION REQUIRED (lb/yr): 0.40 NOTE: OWNER WILL PURCHASE 0.40 LB OF NUTRIENT CREDITS. Total Nitrogen (For Information Purposes) POST -DEVELOPMENT LOAD (lb/yr) 4.45 NITROGEN LOAD REDUCTION ACHIEVED (Ib/yr) 0.00 REMAINING POST -DEVELOPMENT NITROGEN LOAD (lb/yi 4.45 STORM WATER QUALITY CALCULATIONS SCALE: NTS \1 II \\\ I I \ II I ----____4b9___ _ - \ I ------- - I\ _ _ Ir -----------I -- \\ \\ \�-------------- \ \ \ TNP 45-r00B �4 - \ \ I \ BSR INVBSTNANTS, LLC . -- \ 32.908 SP 0.755 ACRES \-BBd366-Taff \ \ USB: VACANT 50 - `\ ZONING: CI - s12- • \ \\ I\ - - - - - - \\ 6� \\ TNP f00A ___J/ V \✓ONN TBOYAS C SN,_BST rr - - \ OB P9V- 44 \ USE. VACANT \ . \ ZONING: 0 I I TMP 46-/OOC I \ I I TON DINH I , - \ `. _ - - I BB 3661-52 I \\ II I USA.. VACANT L--_-J ZON)Nc: n \\ I 24� is, \ / \ '426 DA-A y 0.38 AC. \\ - \ - J II ( \\ I I L \\ I I -526- _ 32- \ \ \ f� I ..:. 6J2\ - ------ �w LE ROA d 63R _ �ARlAB�� BB - PRE -DEVELOPMENT DRAINGE AREA SCALE: 1 °=40' III I I`------------- 11 II I \c - _--------- \ -------- \ I . I \ \ B I \ I lJ \ \ \ \ \ TYP 45-f00B 504 I \ \ \ \ A -SR INVBSTNANTS, LLC _ I -- \ �f x'� ________ 32,908 SP 0.765 ACRES I \ - - - \ MR35"" US:VACAM sOt\ ZONING: a ( 0.06 AC. i -sl I _\ / Nee See L%fsau t4d. \ \ I \ 'S�4 4' Roof so I I TLfP 46-100C \ I I I BB 9 51-62 \\ I\ II I USIA. VACANT ZONM a R I 'R II I t II L \\ --------------- i� - ,o G\`\ 1 A Cis IF L I I � y_z• O� ®A I I � r � R�Q I FiTod'mRgumgin ®s� W d , p . /� , s CA ON 3: I I � M O CA O n O Q of I I \ OZ Q Q m M CD U Z O O m Cis) W W O Z Y \�\ � 0 O 0 W o \ \ TNP f0OA L \ \✓ONN TIiONAS C BN_1 r4TS - - ■ \ AR P8T- 44 r \ USA: VACANT r IT \ ZONING: 0 lJ I I I._II I� _ I �\ // E. � 6 N C/1 ��U) Uo ZWO N W --- DA-N 6-- ----J 0.32 AC. - 612 --TT_1! 1 \ all POST -DEVELOPMENT DRMNGE AREA SCALE: 1 °=40' J( w --------- A A a New SWM Basin / I 1 (See Detail C-404) 514 �_5i�---- o ---0 a -----518-- of Arc Roof 0f v0) \` w o -520 o 520 F / _cl cam Top U ofock Wall Wall o Elev=514. EIev=519.50 SECTION A -A NTS CMU Block Weir Wall 1 RIP RAP 6 4" PVC PIPE N PERFORATED Outfoll Weir_ EIev=515.70 BASIN DRAINPIPE NTS 3 SWM BASIN DETAIL -40 SCALE: NTS .5"0� DO EI �I Z Z`OUa W It SHEET NO. C-404 SHEET 5 of 7 1 YEAR STORM • _ 1 1 II . 1 ------------- ------------ ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------ ------- ------ ------- ------ ------- ------ ------ ------- ------- ------ ------- ------ -------- r i 1 .r .r .:1 :Ir r :.l •.r 1:1 rr r ..r .1 1 YEAR STORM A 11 1 1' - 11 A ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------ ------ ------- ------- ------ ------- ------ ------- ------ ------- r r 1 if•7LCil911111]M• LVA - 1 111 1 1 -• 1 ■■■■■■■■■■■■ ;; ■■■E■■■■■■■■ r r :1 r_�� �■C�r_r_ r_r_r_ r :1 r_ - AAAAAAA�AA�A�AAAAAAAAIAAAAAAA�AAAAAA� �����.- AAAAAA�AAAAAAA-��AAAAAAA�AAAAAAAI ���1��•-� NOMINEES 1 r 1 i la•a•aal - POINT OF ANALYSIS I HYDROGRAPHS DRAINAGE AREA A 10 YEAR STORM • .1 1- 1 - _ 1 II * 1 r * --�l�t1AA-AAAAAA�AAAAAA- pppppp.pppppp.-•���� ------ ------ ------- ------- ------ ------ ------- ------- ------ ------- ------ ------- ------ ------- ------ ------ ------- ------- ------ ------- ------ ------- ------ ------ ------- ------- ------ ------- ------ ------ ------- ------- -MENNEN----- l------- eeeeM ------1 ---pppppp-pppppp--- ------1 ------- 1 1 reeeeer 1 1 1 1 .1 .1 .:1 .11 1 :.1 •.1 i a 11 1 ..1 .1 DRAINAGE AREA M 10 YEAR STORM p� _ 1 11 _ 1 11 • ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ' � -----AAAAAA�AAAAA�AAAAAA.AAAApp.---- � ' ------------- ------------- ------------- ------ ------- ------ ------ ------- ------- ------ ------- ------ ------- 11. DRAINAGE AREA N ROUTED 10 YEAR STORM Hyd. No. 4 DA-N ROUTED Hydrograph type Storm frequency Time interval Inflow hyd. No. Reservoir name = Reservoir = 10 yrs = 2 min = 3 - DA-N = BIORETENTION Peak discharge Time to peak Hyd. volume Max. Elevation Max. Storage = 0.750 ds = 12.07 bra = 2,434 tuft = 515.98 ft = 2,258 tuft Stcrage lndicetlon rad,A Reed. DA-N_ROUTED l0OR;) Hyd. No. 4--10 Year ( ) 3.00 3.00 2.00 2.00 1.00 1.00 0., 0 2 4 6 8 10 12 - Hyd No. 4 - Hyd No. 3 0.00 14 16 18 20 22 24 26 ® Total storage used = 2,258 cult Time (hrs) 100 YEAR STORM Hyd. No. 1 DA-A Hydrograph type Storm frequency Time interval Drainage area Basin Slope Tc method Total precip. Storm duration = SCS Runoff = 100 yrs = 2 min = 0.380 ac = 0.0 % = User = 5.56 in = 24 hrs Peak discharge = 1.00 cis Time to peak = 718 min Hyd. volume = 2,023 tuft Curve number = 59 Hydraulic length = 0 fit Time of conc. (Tc) = 5.00 min Distribution = Type II Shape factor = 484 O (cla) DA-A Hyd. No. 1 --100 Year Q 2.00 2.00 1.00 1.00 0.00 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 - Hyd No.1 Time (min) 100 YEAR STORM A� 11 - 1 - 11 • r- rr ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------ ------ ------- ------- ------ ------- ------- ------ ------ ------- ------- Ap-AAAAA�AAAAA�aaaa�aaaa� Aim .-AAAAA�AAAA�AAAAAA.-- r r r-----A�------ r r r r 1 1 100 YEAR STORM Hyd. No. 4 DA-N ROUTED Hydrograph type Storm frequency Time interval Inflow hyd. No. Reservoir name = Reservoir Peak discharge = 100 yrs Time to peak = 2 min Hyd. volume = 3 - DA-N Max. Elevation = BIORETENTION Max. Storage = 0.793 cfs = 12.03 hrs = 2,485 tuft = 515.99 fit = 2,272 tuft Stoup, lMlcepon method used. O () 3.00 DA-N_ROUTED Hyd. No. 4 --100 Year Q (cfis) 3.00 2.00 2.00 1.00 1.00 0.00 0 2 4 6 8 - Hyd No. 4 - Hyd 0.00 10 12 14 16 18 20 22 24 26 No. 3 ® Total storage used = 2,272 cub Time (hrs) DRAINAGE AREA M + DRAINAGE AREA N ROUTED 1 YEAR STORM 10 YEAR STORM - - - 11 1•1 .1 '1 1 ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- -_-_-_-_-__--_-_-_-_-_-_-_ ------------- ------------- ------ ------- ------ ------ ------- ------- ------ ------- - r rr r rr t t .1 .1 .:1 .tl 1 :.1 •.1 1:1 11 1 ..t .^1 POINT OF ANALYSIS I HYDROGRAPHS 1 • •• 1 1 ------ ------ ----- ----- ------------- ------------- ------------- ------ ------- ------ ------ ------- ------- ------ ------- ------ ------- ------ ------ ------- ------- ------ ------- ------ ------- ------- ------ ------ ------- -------------- r rr r rr 1 r ., .r .:, .Ir 1 :., •.r r:l rr r ..1 ar Drainage Area A A Soils B Soils C Soils D Soils Total Area (acres): 0.38 Forest/Open Space- undisturbed, p rotected Area (acres) 0.00 0.29 0.00 0.D0 Runoff Ru forest/open space or reforested land CN 30 55 70 77 Volumedction e(fte): 0 Managed Turf -disturbed, graded for yards or other turf Area (acres) 0.00 0.06 0.00 DI to be mowed/managed CN 39 61 74 80 Area (acres) Impervious Cover 0.00 0.03 0.00 0.00 CN 98 98 98 98 CN(D.A. Ai 59 1-year storm 2-year storm 30-year storm RVOeveloped (watershed -inch) with no Runoff Reduction* 0.34 0.58 L59 RVDnreluped (watershed -inch) with Runoff Reduction* 0.34 0.59 L59 Adjusted CN* 59 59 59 Drainage Area M A Soils B Soils C Soils D Soils Total Area (acres): 0.06 Forest/Open Space- undisturbed, protected Area(acres) 0.00 0.01 0.00 0.00 Runoff Reduction forest/open space or reforested land CN 30 55 70 77 Volume fte : 0 Managed Turf --disturbed, graded for yards or other turf Area acres 0.00 0.0S 0.00 0.00 to be mowed/managed CN 39 61 74 80 Impervious Cover Area acres 0.00 0.00 0.00 0.00 CN 98 98 98 98 CN(Dn. B) so- 1-year storm 2-year storm 30-year storm RVDeveloped (watershed -inch) with no Runoff Reduction* 0.37 0.62 1.67 RVDe.el.ced (watershed -inch) with Runoff Reduction* 0.37 0.62 L67 Adjusted CN* 60 60 60 Drainage Area IN ASoils BSoils CSoils DSoils Total Area (acres): 0.32 Forest/Open Space- undisturbed, protected Area (acres) 0.00 0.01 0.00 0.00 Runoff Reduction forest/open space or reforested land CN 30 55 70 77 volume fte: 0 Managed Turf -disturbed, graded for yards or otherturf Area (acres) 0.00 0.08 0.00 0.00 to be mowed/managed CN 39 61 74 80 Impervious Cover Area acres 0.00 0.23 0.00 0.00 CN 98 98 98 98 CN oA.c 87 1-yearstorm 2-year storm 10-year storm RVDeveloped fwatershed-inch) with no Runoff Reduction* 1.83 2.36 4.14 RVDe.d.ped (watershed -inch) with Runoff Reduction* 1.93 2.36 4.14 Adjusted CN* 87 87 87 Drainage Area N+M ASoils BSoils CSoils DSoils Total Area(acres): 0.38 Forest/Open Space --undisturbed, protected Area(acres) 0.00 0.02 0.00 0.00 Runoff Reduction forest/open space or reforested land CN 30 55 70 77 Volume fte : 0 Managed Turf -disturbed, graded foryards or other turf Area (acres) 0.00 0.13 0.00 0.00 to he mowed/managed CN 39 61 74 80 Impervious Cover Area (acres) 0.00 0.23 0.00 0.00 CN 98 98 98 98 CNID.A. DI 83 1-year storm 2-yearstorm 10-year storm RVDeveloped (watershed -inch) with no Runoff Reduetia n* L53 2.W 372 RVDeMoped (watershed -inch) with Runoff Reduction* L53 2A3 3.72 Adjusted CN* 83 1 83 POINT OF ANALYSIS I CURVE NUMBERS SCALE: NTS CHANNEL PROTECTION COMPLIANCE SUMMARY TABLE Applicable Channel Protection Criteria Discharge Conditions within Criteria 6.3 Point Limits of Analysis QI . RVp Apr' IF x (Qp d..d.P.d x IF RVdw.i.pw Ad.v.lopw = (RV x A)Prad.r w) I 2 Qd i.p.d de.•emped day.II d..ebp.d (RV x A)De. I.Ped ® Manmade A1 FCP [1Restored 0.9 0.13 0.34 0.38 1.53 0.38 m 0.03 Z 0.02 ElNatural 1 ENERGY BALANCE EQUATION -40 SCALE: NTS FLOOD PROTECTION COMPLIANCE SUMMARY TABLE APPLICABLE FLOOD PROTECTION CRITERIA Discharge Conditions within Criteria Criteria Point Limits of Analysis Q10-wo /� Qcepmky Q10 pre-devd.ped Q10-psi Qcapacity (Required for (RegUredW (Requred for Coterie B. and 8.2) Crtere B. 1) Caters, 8.2) POA 1 ® No Localized Flooding 0.83 N/A 0.98 ❑ Existing Localized Flooding ❑ No Localized Flooding ❑ Existing Localized Flooding Flood Protection Criteria A. Where localized flooding does not currently exist, the 10-year 24-hour storm event must be confined to the most restrictive stormwater conveyance system within the limits of analysis. B. Where localized flooding exists within the limits of analysis, the 10-year 24-hour storm event must: 1. be confined within the most restrictive stormwater conveyance system within the limits of analysis (detention or downstream improvements may be provided to meet this criterion), or 2. be released at a rate that is less than the pre -development peak flow rate from the 10-year 24-storm event. N N O Z � \ O CA \ of O Q OZ m m m Q Q U Z m Cn � 0 U O �LLI S in U W a Z O H a U (n W 0 O Z V 1 U] Cl) C E- H1 W a O n Q 0 � W Q Lli F- 0 F- a rO V LU W SHEET NO. C-405 SHEET 6 of 8 _ Existing Treees­� i / / 'V""�> o MATCHLINE D A :'"'''- Top=487.54 � I � � U \ ,o Inv In = 478.94 wl / TMP 45-101B AUTO, LLC / \ I - - Inv Out 478_64 QI -00 41 by Q� s,` IM a I 5h- _ __ ZONING._-E1 col CA can �Qw o _ _ _\\ o Existing Trees I o Q \ \ LIA4lIS �F DIS 4 � -- - \ \ - - - - - ------ 49( _ (o RO aij Existing Trees 1 90 SF o Q Q m m m T _ - _____- \ \ (1 Remain o o U z o 0 _ \,900 SF)- Z Y Ease - - - - - - - 2o' Sanitary \ L U 1270-70 2'+/ Connect Ipteral \ - - - to existing stub MAT-CHLINE-D SSM �\ \\ - - - - - - - - �504 Top=487.54 I \ \ Inv In = 478.94 w \ \ I \ TMP 45-100B o I p \ Inv Out = 478.64 z I \ \ I \ KSR INVESTMENTS, LLC 0I _ a F \ 32,908 SF J > EROSION &SEDIMENT CONTROL NOTES LEGEND \\ \ - - - - - - - - - - - -DB-43ACRES 6 R� \ USE: VACANT �0,4 cc 508 ES-1: Unless otherwise indicated, all vegetative and structural erosion and sediment control practices will be constructed and \ \ \ ZONING: C> > I \ _ - - �' a w CID Z maintained according to the minimum standards and specifications of the Virginia Erosions and Sediment Control Handbook and ULTIMATE LIMITS \ \ _ VI _ - - - E co Q Virginia regulations VR 625-02-00 - - - _ - OF DISTURBANCE r o w w ES-2: The plan approving authority must be notified one week prior to the pre -construction conference, one week prior to the CONSTRUCTION \ - - 512- a W zo commencement of land disturbing activity, and one week prior to final inspection. 3'02 ENTRANCE CE \ N I Z v x CO ES-3: All erosions and sediment control measures are to be placed prior to or as a first step in the clearing. \ \ _ - - \ .I ° \ Z N P 3.05 SILT FENCE SF� - _ _ X�X �a�� I I� Z FWD ES-4: A copy of the approved erosion and sediment control plan shall be maintained on the site at all times. \ - - - k516�x a ,'' �I= \ TMP 4'S 100A - Z 3.07 INLET IP k�k J L JOHN THOMAS GREEN�EST.4TE- - ES-5: Prior to commencing land disturbing activities in areas other than indicated on these plans (including but not limited to, PROTECTION x �k \ DB 297-544 a off -site barrow or waste areas) the contractor shall submit a supplementary erosion control plan to the owner for review and 0 USE: VACANT I Z approval by the plan approving authority. 3.31 TEMPORARY TS TS 1 I �\ \ O 516 \ \ ZONING: C1 W ES-6: The contractor is responsible for installation of any additional erosion control measures as necessary to prevent erosion SEEDING I f - - - - \ 518 TP \ and sedimentation as determined by the plan approving authority. 3 32 PERMENANT PS I \ PP 9 9 SEEDING O PS I 1 `� S ��% a ST-1 \ /' ES-7: All disturbed areas are to drain to approved sediment control measures at all times during land disturbing activities and I 1 I \ _ 4' Roof Drain _ during site development until final stabilization is achieved. I I TMP 4 - C 520 / r - ° I 511 \ - OUTLET TON DINH 1 514- 3.18 OP 11 1-Story Structure I ES-8: During dewatering operations, water will be pumped into an approved filtering device. PROTECTION \ 1 DB 3651-52 y �� �� 1 1 1 USE: VACANT 1 Storage Area 1 N I\ 516 I I ES-9: The contractor shall inspect all erosion control measures periodically and after each runoff -producing rainfall event. Any 3.39 DUST CONTROL DG DC I L - - - - J ZONING: C1 _ 1 FFE-524.38 necessary repairs or cleanup to maintain the effectiveness of the erosion control devices shall be made immediately. I - _ Height=15' Erosion Notes: I \ I 1 ' I- -V - 520 1) All Entrances except the approved construction entrance shall be blocked in such a manner as to not allow access to the 1 1 m L - - - - -j site. I \ z - A TRoof ( Drain \I 2) The developer shall reserve the right to install, maintain, remove and/or convert to permanent structure all erosion and I \s24 sediment control measures required by this plan regardless of the sale of any lot. w Water 1 Ne\ I Service 3) A video camera inspection is required for all storm sewers and culverts that are deemed inaccessible to VDOT inspections \ \ I \ I 520- and are to be accepted into VDOT's maintenance and program and ownership. The video inspection shall be conducted in New 1-Story Building \ S New Retaining Wall accordance with VDOT's video inspection procedure and with a VDOT and/or county inspector present. In addition, if 2,500 SF I With Handrail s26 FFE=525.50 w ~a high -density polyethylene (HDPE) pipe or pipe system, the contractor and a representative from the pipe manufacturer should � � � � `I, � o hold apre- construction meeting for installation. Height-20' New WP Max Height=3.5' \ v New Backflow I z \ \ Preventer _ _ \ I m ce ALBEMARLE COUNTY ENGINEERING GENERAL CONSTRUCTION NOTES 15 jE� 801 4� FOR EROSION & SEDIMENT CONTROL w\ Roof Drain I o _ - - / / _ _ E 0 1. The plan approving authority must be notified one week prior to the pre -construction conference, one week prior to I r - - - - _J -I N the commencement of land disturbing activity, and one week prior to the final inspection. I I O -L I o 2. All erosion and sediment control measures will be constructed and maintained according to minimum standards and I I I P specifications of the Virginia Erosion and Sediment control Handbook and Virginia Regulations VR 625-02-22 Erosion and Sediment Control Regulations. 3. All erosion and sediment control measures are to be placed prior to or as the first step in clearing. 4. A copy of the approved erosion and sediment control plans 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 limits to, off -site borrow or waste areas), the contractor shall submit a supplementary erosion control plan to the owner for review and approval by the plan approving authority. 6. The contractor is responsible for installation of any additional erosion control measures necessary to prevent erosion and sedimentation as determined by the plan approving authority. 7. All disturbed areas are to drain to approved sediment control measures at all times during land disturbing activities and during site development until final stabilization is achieved. 8. During dewatering operation 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 or cleanup to maintain the effectiveness of the erosion control devices shall be made immediately. 10. All fill material to be taken from an approved, designated borrow area. 11. All waste material shall be taken to an approved waste area. Earth fill shall be inert materials only, free of roots, stumps, wood, rubbish, and other debris. 12. Borrow or waste areas are to be reclaimed within 7 days of completion per zoning Ordinance Section 5.1.28. 13. All inert materials shall be transported in compliance with Section 13-301 of the code of Albemarle. 14. borrow, fill or waste activity involving industrial -type power equipment shall be limited to the hours of 7:OOAM to 9: OOPM. 15. Borrow, fill or waste activity shall be conducted in a safe manner that maintains lateral support, or order to minimize any hazard to persons, physical damage to adjacent land and 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) and all erosion control measures required by this plan regardless of the sale of any lot, unit, building or portion of the property. 17. Temporary stabilization shall be temporary seeding and mulching. Seeding is to be at 75 Ibs/acre, and in the months of September to February to consist of a 50/50 mix of annual ryegrass and cereal winter rye, or in March and April to consist of annual Rye, or May through August to consist of German Millet. Straw mulch is to be applied at 80lbs/100SF. Alternatives are subject to approved by the County Erosion Control Inspector. 18. Permanent Stabilization shall be lime and fertilizer, permanent seeding, and mulch. Agricultural grade limestone shall be applied at 90lbs/1000sf, incorporated into the top 4-6 inches of soil. Fertilizer shall be applied at 1000lbs/acre and consist of a 10-20-10 nutrient mix. Permanent seeding shall be applied at 180 Ibs/acre and consist of 95% Kentucky 31 or tall fescue and 0-5% perennial ryegrass or Kentucky bluegrass. Straw mulch is to be applied at 80lbs/100sf. Alternatives are subject to approved by the County Erosion Control Inspector. 19. Maintenance: all measures are to be inspected weekly and after each rainfall. Any damage or clogging to structural measures is to be repaired immediately. Silt Traps are to be cleaned when 50% of the wet storage volume is filled with sediment. All seeded areas are to be re -seeded when necessary to achieve a good stand of grass. Silt fence and diversion dykes which are collecting sediment to half their height must be cleaned and repaired. 20. All temporary erosion and sediment control measures are to be removed within 30 days of final site stabilization, when measures are no longer needed, subject to approval by the County Erosion Inspector. 21. This plan shall be void if the Owner does not obtain a permit within 1 year of the date of approval. (Water Protection Ordinance Section 17-204G) 22. Permanent vegetation shall be installed on all denuded areas within nine (9) months after the date the land disturbing activity commenced. (Water Protection Ordinance Section 17-207B) I I N nw Water \ ♦` - - 000000 - -528- 000000 L I Service �_�-00TP \ \ (jjV�jj o -------__J ° ° z 00°0°0 000000 \ 0 o9a0 a o 0 0 0 0 --- I C/) __-------- 00000 00°0°0 - - 000000 00 o0°00 [� _ I 00°000 -532 ---�- _ 000O° a d Z 000000 P 000000 i--i I 0 000 e :. _,... ... .�. WM TOno 0 YVl - .. ° O w r O FLU 00 --Oc, 00 E z Am Aug am 0 STATE ROUTE 631, - - - VARIABREO ROAD WEST WIDTH PUBLIC " R O - _J w W - / P__> _J 8" DI WATER MAIN /' / o LL' : / a- cn SHEET NO. C-5 01 20 0 20 40 60 SCALE: 1"=20' 1 SHEET 7 of 8 SILT FENCE STD. & SPEC. 3.05 — VA. EROSION AND SEDIMENT CONTROL HANDBOOK (1992) NO WIRE BACKING WITH WIRE BACKING 6' MAX � 10' MAX WIRE 16" — 34 16" — 3 " i---f ESH WEIR DRAINAGE WET Al Al DRY A2 A2 NO. A B C H W I D7 D2 LENGTH AREA VOL. Re Prov VOL. Re Prov ST-1 511 514 516 3 3 4 0.3 579 3 227 320 579 2 352 634 I I I `--ORIGINAL EL = B GROUND F`oW " F`oW 4rl ELEVATION Wet Volume D1 FILTER CLOTH (Excavated) CLASS I PROVIDE I' TUCK OR SUITABLY PROVIDE I' TUCK OR SUITABLY **COARSE REINFORCED TOP END SECTION REINFORCED TOP END SECTION AGGREGATE RIPRAP EL= A CROSS SECTION OF OUTLET CLASS I RIPRAP _ WEIR LENGTH DIVERSION 4 � DIKE EMBED 8' OF FILTER CLOTH IN EMBED 8' OF FILTER CLOTH IN TRENCH TO ANCHOR BOTTOM OF TRENCH TO ANCHOR BOTTOM OF CLOTH. COMPACT THOROUGHLY rl OTH rOMPArT THORnur,HI v 1 SILT FENCE SF —50 SCALE: NITS Stone — Construction Access Existing Grade B t— Stone Construction Access 3" SM-2A Asphalt 2% Slooe 21A Aggregate Base \—Filter Cloth SECTION B-B MESH SHALL BE A MINIMUM Ur 14 GUAGE AND SHALL HAVE A MAXIMUM MESH SPACING OF 6'. Pavement 12' Mi Positive Drainage To Sediment 2% Slope— Trapping Device SECTION A -A Filter Cloth NOTE: 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 waster must be carried away from the paved construction entrance to an approved settling area to remove sediment. All sediment shall be prevented from entering storm drains, ditches, or watercourses. PAVED CONSTRUCTION ENTRANCE SCALE: NTS :;Zli!10 ti-• - •i��Vfii II y_ _�-..• All -.::� ... jjjpll 11 AGGREGATE FILTER CLOTHEXCAVATED I "COARSE AREA OUTLET (PERSPECTIVE VIEW) 11 1' 2 SEDIMENT TRAP ST —50 SCALE: NTS GRAVEL CURB INLET SEDIMENT FIL TER GRAVEL FILTER RUNOFF EATER SEDlldENT — CONCRETE SPECIFIC APPLICATION THIS METHOD OF INLET PROTECTION IS APPLICABLE AT CURB INLETS WHERE PONDING IN FRONT OF THE STRUCTURE IS NOT LIKELY TO CAUSE INCONVENIENCE OR DAMAGE TO ADJACENT STRUCTURES AND UNPROTECTED AREAS. * GRAVEL SHALL BE VDOT #3, #357 OR 5 COARSE AGGREGATE GRAVEL CURB INLET SEDIMENT FILTER SCALE: NTS Wan "'eHWan __ ----- \ 1\ \ \ 1 _oar \ 1\ \ \ , _492 Elioak loam, 7 to 15 `\ \\ \ \\ _____ ✓- re xma� ___—_— --__--___ ray r -- _ OPro xTl xsx- \ / _ }_--- percent slopes 27C Group B --�� \ ------ i0 rYP dd-moB _ _ / / \ \ \\ \ 1WB AYE 100D. LC RSA INY89rASMs, lac - 9P,*aB BF 9P,*➢B BF \ \-'-_________ 0755 ACR85 \ --_� �� ___ Dgti AcR \ \ \ Des ,We` �' \ ass soe. \ "NIM n \ "NIM n \ - \\ \ \I-51]-�\ \ i�'� \ \y -51]-p.\ \ 1 'aoA /F .roAN rBBBds c axswars - - `� among*291 r--- \ "Mm. n / r--- - nw.r a \'� "i'�• ST-1 \ __���� / I L 1 nw.s-m•a \ ap - -I I�v 11 I T'IN mA � / •, ____ vim___ i -I I v II TON DISH _ I DB %5r-6P 1-Slay SWebn A4 l I DB %n-62 SbY xbuebn \\ I'- PaMDA.�n ••\\ I'- WNID . f _, • b r-- I = Elioak loam, 2 to SZr� ,�___ -- 7 percent slopes 27B L___-__-_J x"'zw�s sue" \ •u xaa""i°•' L x �` m..sssx \ Ym wq,nxsC. \ _ ------------- �,\�wA Z �or^Q z� UPro s -------------- �o 417 N 1 N Z \\ /' \ O G) O fn N \ \\ �- V-) ui rn a_ tr O a rBR rsoA W W } } } \ UBF. YA " z ¢ Q m m m m t] Z t] t] 1 ,MOWNO < w w Z 1' *----, ---- o w / W = I I 1 p U Ym HM1ji415 �.J �/ \Sze• Szx\ I --- roue sue\ (.r ``'a� ,z,� ' ------ _-vim- -___ _-v�� -_ I� (L \\ © rainage rea for \ 1 \ II I I 11 1 \ \ \ \ \ /I G -el CQ LJ I--� '� O I--� Z U] '� O U 1 ,Op. Sediment Trap ST-1 -'ze- 0.30 Acres -� \ -- - I --___J \ �• -sze-_�- \ ® \ '- II I —I O rra --------------1 ------ — ----'_ -1'-\ ------------ 1 ------ �` — — — ----'_ -1" U a co--- 00 — -- \ \\ -- \ `, a F -I ------ __ Cr) oww --- - 77 B — _ __ �j' — IbAD \— _ YA.VdALB •'IDJA . � R// — S YARrdALB _ IIDIdA R//i � — 400 '//� —400' —S1 _ W a• a• _ � - YM! i _ � - YM! � F-I�Wj W 3 DRAINAGE AREA FOR SEDIMENT TRAP ST-1 4 SOILS MAP —50 SCALE: 1"=50' —50 SCALE: 1"=50' 'E OUTLET TO J AREA WITH DEFINED CHANNEL APRON LINING SHALL BE= 5' d 50 =6" 0% — Il(I T SECTION A —A 1 LFILTER CLOTH KEY IN 6"-9"; RECOMMENDED FOR APRON LINING SHALL BE ENTIRE PERIMETER PLAN VIEW SECTION A —A FILTER 7 OUTLET PROECTION OP —50 SCALE: NTS PIPE OUTLET TO WELL—DEFINED CHANNEL 0%— "d T KEYIN— RECOMMENDED FOR ENTIRE PERIMETER PERMANENT & TEMPORARY STABILIZATION Permanent seeding shall be applied within seven (7) days after final grading is completed TEMPORARY SEEDING SPECIFICATIONS: February 16 through April 30: Use Annual Ryegross at 60 to 100 Ibs/acre. May 1 through August 31: Use German Millet at 50 Ibs/acre. September 1 through February 15: Use a 50/50 Mix of Annual Rye and Winter Rye at 50 to 100 Ibs/acre. PERMANENT SEEDING SPECIFICATIONS: February 16 through April 30: a Kentucky 31 Fescue — 128 Ibs/acre; Annual Rye — 20 Ibs/acre. o May 1 through August 15: Kentucky 31 Fescue — 128 Ibs/acre; Foxtail Millet — 20 Ibs/acre. August 16 through October 31: Kentucky 31 Fescue — 128 Ibs/acre; Annual Rye — 20 Ibs/acre. z O November 1 through February 15: Iz it Kentucky 31 Fescue — 128 Ibs/acre; Winter Rye — 20 Ibs/acre. N w MULCHING SPECIFICATIONS: 0 Straw or hay at a rate of 2 tons/acre. Must be anchored. Spread with mulch blower or by hand. EROSION MAINTENANCE SCHEDULE 1. The Site Superintendent or his representative shall make a visual inspection of all erosion and sediment controls on a daily basis until the site is stabilized and especially after a heavy rainfall to assure that all controls are in place and that none have been damaged. Any damaged control shall be repaired prior to the end of each workday to include re —seeding if necessary. 2. All silt trapping devices shall be cleaned out at 50 percent capacity and sediment shall be disposed of by spreading on site or hauling away if not suitable for fill. 3. Gravel outlets shall be checked regularly for sediment buildup that may prevent drainage. Controls shall be inspected and repaired after each rainfall and cleaned if sediment has accumulated to half of the device's original height. 4. All earthen structures such as diversion dikes and berms shall be checked daily during construction for breaching by equipment. Repairs shall be made immediately. 5. Silt fences shall be checked after each rainstorm to assure they have not fallen or become clogged with silt. All repairs shall be made immediately. 6. All seeded areas shall be inspected regularly to see that good stand is maintained. Areas will be re —fertilized and re —seeded as necessary. 7.After construction operations have ended and disturbed areas have been stabilized, all berms and sediment —trapping devices may be removed after removal, the ground shall be restored to its natural or proposed condition to include establishment of permanent vegetation. Removal of any control is contingent upon approval of the County Inspector. O Z w�a O a 7) W E� z E� Q O �0 Fd-I W SHEET NO. C-502 SHEET 8 of 8