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HomeMy WebLinkAboutWPO201900051 Plan - As-built 2023-03-20M L J H u F E 0 C 0 181 17 cw+xmoeu:aEe AKHr1_;neann,. 16 15 14 13 12 7 H SCOTTSVILLE ELEMENTARY 5 4 SCHOOL ADDITION AND RENOVATION PROJECT SITE PLAN AMENDMENT TO SDP202000007 SITE DATA: ENGINEER: TIMMONS GROUP 608 PRESTON AVENUE, SUITE 200 CHARLOTTESVILLE, VA22903 TELEPHONE: 434-327-1681 CONTACT: JONATHAN SHOWALTER, P.E. JONATHAN.SHOWALTER@TI M MONS,COM TAX MAP PARCEL: 13000-00-00-025PO LIMITS OF DISTURBANCE: 3.04 ACRES SETBACK: 75'FRONT 2V SIDE 35' REAR ZONING: RURAL AREAS (RA), CRITICAL SLOPES OVERLAY MAGISTERIAL DISTRICT: SCOTTSVILLE SOURCE OF BOUNDARY AND TOPOGRAPHY: TIMMONS GROUP. 28 IMPERIAL DRIVE STAUNTON, VA 24401 (540)-885-0786 SOURCE TOPOGRAPHY: TIMMONS GROUP, NOVEMBER 13, 2019 DATUM: HORIZONTAL: NA083 VIRGINIA STATE GRID SOUTH ZONE VERTICAL: NAVD88 ESTABLISHED THROUGH LEICA SMARTNET SITE AREA 14.7 ACRES PROPOSED USES: ELEMENTARY SCHOOL ADDITIONS BUILDING AREA: 16,293 S.F. ADDITIONS BUILDING HEIGHT: 26'-0" PARKING COUNT: PRE -DEVELOPMENT TOTAL: 72 SPACES PARKING SPACES REMOVED: 15 SPACES PARKING SPACES ADDED: 15 SPACES POST -DEVELOPMENT TOTAL: 72 SPACES EXISTING IMPERVIOUS AREA ( WITHIN PROJECT LIMITS): 0.62 ACRES PROPOSED IMPERVIOUS AREA ( WITHIN PROJECT LIMITS): 1.34 ACRES WETLANDIMPACTS: NONE WATER SUPPLY: EX.ONSITE WELL SANITARY SEWER: EXISTING ONSITE DRAINFIELD DRAINAGE DISTRICT: MIDDLE JAMES-BUFFALO THERE ARE NO CRITICAL SLOPES LOCATED WITHIN THE PROJECT LIMITS. THERE ARE NO CONSTRUCTION ACTIVITIES PROPOSED WITHIN THE 100.YR FLOOOPLAIN. THE SITE IS NOT LOCATED IN A WATER SUPPLY PROTECTION DISTRICT. GEO-COORDINATES OF STORM WATER MANAGEMENT FACILITIES: 100 N:3821784.28 E: 11479654.04 ELEV: 390.29 102 N: 3821768.39 E: 11479681.20 ELEV: 398.26 104 N:3821738.88 E: 11479728.32 ELEV: 401.19 200 N: 3821757.83 E: 11479617.04 ELEV: 390.29 202 N:3821697.30 E: 11479615.80 ELEV: 399.67 300 N: 3821676.47 E: 11479612.33 ELEV: 399.23 400 N: 3821766.03 E: 11479584.77 ELEV: 390.25 402 N: 3821726.06 E: 11479510.01 ELEV: 402.06 404 N: 3821616.66 E: 11479459.71 ELEV: 402.95 406 N: 3821598.48 E:11479464.48 ELEV: 401.73 502 N: 3821810.20 E: 11479620.94 ELEV: 393.90 500 N: 3821860.03 E:11479591.35 ELEV: 389.59 604 N: 3821477.51 E: 11479670.16 ELEV: 406.47 602 N: 3821499.56 E: 11479643.29 ELEV: 404.58 600 N: 3821482.21 E:11479627.85 ELEV: 402.54 WP0201900051 COUNTY OF ALBEMARLE, VIRGINIA SCOTTSVILLE DISTRICT P e St. George 4 Catholic Church TOTTER HILLS Qsconsviltepool EEK t•"W Gre* 0 / /01/2021 PROJECT y LOCATION Calvary Baptist Church consvdle ElemernarySchool Fauhunt Farm V rish Rd Scotlsv:Gc 2L Shopping Canner Food Lion 0 O High meadoy. wF Paulett Ace Hardware ® Q � o n Dollar General Q VICINITY MAP SCALE 1"=2000' OWNER: ALBEMARLE COUNTY SCHOOL BOARD 401 MCINTIRE RD CHARLOTTESVILLE, VA 22902 CONTACT: JOE LETTERI TELEPHONE: (434) 975-9340 FAX: (434) 975-9341 ENGINEER OF RECORD: TIMMONS GROUP 608 PRESTON AVENUE, SUITE 200 CHARLOTTESVILLE, VA 22903 CONTACT: JONATHAN SHOWALTER, P.E. TELEPHONE: 434-3 27-1681 0 APPROVED by the Albemarle County Community Developpment Department Date 3/20/2023 I�R�13i 1 •1%IiL.TTITII.'it� Sheet List Table TOTAL SHEETS = 20 0 APPROVALS DATE DEPARTMENT OF COMIvIUNTTY DEVELOPMENT PLAN''NER/ZONMG ENGINEER INSPECTIONS ARB DEPARTMENT OF FIRE RESCUE ALBEMARLE COUNTY SERVICE AUTHORTTY VIRGINIA DEPARMENT OF TRANSPORTATION HEALTH DEPARTMENT NOTES: 1.) THIS SHEET SEALED FOR AS -BUILT INFORMATION IN RED ONLY 2.) PROPOSED FEATURES SHOWN HEREON ARE PER PLANS ENTITLED "SCOTTSVILLE ELEMENTARY SCHOOL ADDITION AND RENOVATION PROJECT" PREPARED BY GRIMM AND PARKER WITH THE LAST REVISED DATE 07/01/20. 3.) THIS AS -BUILT SURVEY WAS COMPLETED UNDER THE DIRECT AND RESPONSIBLE CHARGE OF CHERYL A. STOCKTON, L.S., FROM AN ACTUAL GROUND SURVEY MADE UNDER MY SUPERVISION; THAT THE IMAGERY AND/OR ORIGINAL DATA WAS OBTAINED ON 12/27/2021, 01/27/2022, 01/28/2022, AND 03/24/2022; AND THAT THIS PLAT AND/OR MAP MEETS MINIMUM ACCURACY STANDARDS UNLESS OTHERWISE NOTED. 21 1 �.nn•,. ol�ttrra M ® (3 aL . �� o •• Zz • 0 4 • • z O x �0 o K O 8 rn N N � [7 >,o a ET 1 n N >rn E In ON) E �g�Q H W LL O v no LU fie ■ a- ET 2, BIORETENTION 1 GRADING AND DRAINAGE PLAN ET 3, BIORETENTION 2 & DRY POND GRADING AND DRAINAGE PLAN Q G ET 4 ET 5 (D GP #21850 � F w Q IQ_ z Q TOTAL SHEETS = 5CC C� z � E a z Z a l= to Q �1 0 Q> � N D f!� Q z ¢ LU Cjf w LU J J w J w Cj C � ('i LU r= C/5 O p o0 cC> U ran lr o DATE DESCRIPTION 2/25120 REVISIONS 4/06120 REVISIONS 06/18/21 AMENDMENT 7/01/20 REVISIONS B J CO.0 V9/P0 oar A ,1e`� -;VTH OF / �G CARYL A. STOCKTON y Lic. No. 2425 v 3/14/2023 0� Cif m > 121 c t m Z s 45a m m .V i � m °tmJ=.S UX LL Z > 0�^ V/ N � ? v 0 w 0 M a 0 E 0 E • e E i* a . V N N N Cq ^l �44E l/V�eIA/IJ� I y > -V v •� LL a to Q 00O w O O O � L r J_ M v 0Ln ~O 0 O Q J O ON V 0 U� (n I r Z W U o U LU[-.- � � O Z LU Do < 20-Q Ir LLJ Z v LUJ (DLL °C H QO W w LUDE � wQ �> �0 �z fr U)U) vJw 2> -� JJ zM ~ Oo U) (1) �5 CID �_V Ch /)U�Z 00 Q Q (n Cn REVISIONS Zh04/11 /2022 STORM 404 A 05/04 STORM 502 A 08/03/2022 REV. 406,502 & DRY POND ®10/11 /2022 REV. 502 & DRY POND A10/21 /2022 REV. 502 & DRY POND ©12/27/2022 & 3/14/2023 REV. COUNTY COMMENTS DESIGNED BY: DRAWN BY: DHP CHECKED BY: CAS SCALE: 1'=10' DATE: 03/24/2022 PROJECT NUMBER: 20060129-010503 SHEET 1 181 17 16 15 14 13 12 10 (J 81 7 1l 51 41 3 2 1 OF 5 x ///,/ \ /ZZ, SHEET 2 BIORETENTION 1 / / CAPPED ROD N:3821546.24 / E:11479389.54 Z:407.74 T:37 L/ / LON:78°30'43.96" / 404 / \ I 404 w \ MH-2 \ TOP = 402.95 \ INV IN=396.00 \ V OUT = 395.89 / \ x 402.60' / x 405 \ 403.28' I \ \ I / SURVEY LIMITS EDGE OF PAVEMENT BASIN WITH DOME RACK IN = IN = SHEET 1 \ / ` \ \402.88 403.93I I PERFORATED PVC ; \ ♦� A/ %I \ 4" PVqCL1T� / � ♦ �, \ \\ \\x 401.12' j / \\ \\ 402.96' 400.85 \ \\ 0 RIPRAP \\ \\ \ v v r ax 401.20 v \ \\ \\ 401. 8' \\ I \ 401.31 \ \ \ \ \ \ \ 403.95' it \ \ \ \ DRAPER ADEN ASSOCIATES REVIEW THESE PLANS HAVE BEEN SUBJECTED TO TECHNICAL AND QUALITY REVIEWS BY: CHERYL STOCKTON, LS OCT. 14, 2022 PROJECT SURVEYOR OCT. DERECK PERRY OCT. 14, 2022 QUALITY REVIEWER / 404.91' ` \ 401 \4000T `` \ 602 SIDEWALK ---_ / 74' \ �C \ \ \ \ `�\ \404 ```\--___ 404.47'- \ \\\\ \-403.\- E DITCH `-----------------a02.50 \\x 403.6 \ 402.5 X 404.06\\ X 402.57 405.4V IPRAP / 404----______ END SECTION � / _ _INV OUT = 402.54 L602) .58 / \ - 600 / 405-_---_---__-i \ \ \ \_.406---__-_---- / k-SURVEY -- ------407---- / LIMITS EDGE OF PAVEMENT -----_-- / GRAPHIC SCALE I , m o s m zo ao � , \ Ap9 / ( IN FEET) \ / 1 inch = 101t. NOTE 1. THIS SHEET SEALED FOR AS -BUILT INFORMATION IN RED ONLY. 2. PROPOSED FEATURES SHOWN HEREON ARE PER PLANS ENTITLED "SCOTTSVILLE ELEMENTARY SCHOOL ADDITION AND RENOVATION PROJECT" PREPARED BY GRIMM AND PARKER WITH THE LAST REVISED DATE 07/01120. 3. THIS AS -BUILT SURVEY WAS COMPLETED UNDER THE DIRECT AND RESPONSIBLE CHARGE OF CHERYL A. STOCKTON, L.S., FROM AN ACTUAL GROUND SURVEY MADE UNDER MY SUPERVISION; THAT THE IMAGERY AND/OR ORIGINAL DATA WAS OBTAINED ON 1212712021, 01/2712022, 01128/2022, AND 0312412022; AND THAT THIS PLAT AND/OR MAP MEETS MINIMUM ACCURACY STANDARDS UNLESS OTHERWISE NOTED. 602 O 15" NYLOPLAST BA W TOP = 404.58 INV IN = 402.77 (604) INV OUT = 402.65 (600) r 11 El 604 15" NYLOPLAST BASIN WITH GRATE TOP = 406.47 INV IN = 403.36 (606) INV OUT = 402.96 (602) CIl�RYL 'A. SPOCKTON Lic. No. 2425 3/14/2023 4' N > U c s 2's v N U Z d m U_ � s y L m m •U ti ALL Z> VJ ) '/♦ v� m ; W C C a E 0 CL • m � E m 04 N N • CD T N N ^' ccav E i (�j s o- LLma j o w o0 L 1 Ln ZCD :i N M or-1 ^^ L / C)0 a� JO � 00 !r V Ir V/� /u/ J 1 } H Z w 0 QLLJ W LU 0~ � O a w Q a Ir w Z ww J O Cc >_ � w Q Q 2 Lu J > CC 0 \O Z " / C7 Cn Cn W w 2 > J ~ J_ J_ Z� Oo >> I_ch 00 Q /QZ V i U) Ul 004/11 /2022 STORM 404 A05/04 STORM 502 A 09/07/2022 REV. 406,502 & DRY POND ®10/11 /2022 X. 502 & DRY POND 10/21 /2022 REV. 502 & DRY POND ©12/27/2022 & 3/14/2023 REV. COUNTY COMMENTS DESIGNED BY DRAWN BY: CHECKED BY: CAS SCALE: 1' = 10' DATE: 03/24/2022 PROJECTNUMBER: 20060129-010503 2 2 OF 5 BIORETENTION 2 8 DRY POND It / / / \ I 402 / VDOT TOP = 402.0602.06 INV IN = 394.33 (4 INV OUT = 394.28 0) 403 END SEC INV OUT = 389.59 \\ \y \ O'� LANDSCAPED AREA L VJ� CURB CUT 395.5 7717 _ --- \ 39 x \ \ 502 SURVEY LIMITS // / a 390.30 \\ \ \ \ \ \ \\ 386.91 \502 ® x V \ \ \ \ / 39/.78 x 4 / I TOdRISER SH RACK = 395.99 x t I TOP 399a,90 \ \ \\ \\ \1 Y: 38950 RIP P I RECTANGLE�NOTCH=392.36 \ \ \ \ / BOTTOM ORIFI'O£= 390.01 I 1 �/390.07- I INV OUT =390.01 (5 'LIDO �90.Q6' \\ \ \\ \I �8 , \ I END SECTON 389 .�, 3 INV O =391L2Y(102) < 1.491 \I I I 1 389.74 RIPRAP 100/ // '391.9 / 101 , 390 ---- I I i I i �17�389.94 400 \ - _xr 390.15' I 1 I I END SE67QN x j I1 1 I I :391.40 x, INV OUT =39025 (402) Q �. 1 II YX�RIPRAP 200 }no 1 I END SECTION 1 I --- _ I 1 111 I 1 I 39243 39 90.03 03 INV OUT -39029 (202) rRIPRA 200 � `� !' 390.01, x x \ I 390.24' / //'� /// // /// // , 102 39005Kt x- / 390.29 9158 -395 SURVEY LIMITS, REV. TOPOGRAPHY 09/01/2022 LANDSCAPED AREA SHEET2' SHEET 1 I-- 3' HIGH WOOD FENCE � 6" CONCRETE CURB OVERHEADI I ICONCRETE ETE 202 24" NYLOPLAST BASIN WITH DOME RACK TOP = 399.67 INV IN = 392.65 & 394.67 (A) r INV IN = 392.67 & 394.82 (B) /INV IN = 392.64 & 394.77 (C) INV IN = 392.62 & 394.82 (D) INV OUT= 392.60 (200) CURB CUT I TC 400.72' TC 400.56' �' "CONCRETE CURB 3 7' 102 VDOT / 8.26 IN = 393 27 (104) OUT=39115(100) o 4 D8`-. -' 4" PERFORATED�V - _ _ _ _ r 7 - - - - - - - -_ / - _ R RAP -tee 399 - _ ✓ - 401 ! 39866 �99' 398.55 v� I 398 9 - - - - _ 99 - - 400 _ _ _ \ ' . \ I 399.4 VER 39874Sp 98_66. x398 �. C 1.6T 1398.593 - I x j g �99 1 1W 398.58 - - \ 3�.05 " p ,� BIRCH 3 8. 551I i ��0 2 ;=4 Imo-- -4 \ \ C 7 3 8.8 2 0 1" ER BIRCFI`V SURVEY ' / x 398.� / A 398.0La' LIMITS / 398.67 x x� / L x 98.39' _ 398.53' \\\ 1. �.. 0 T�W:399.92' x -x, ... ,� xL ° TC 40 . 1' '/. 39872' x -'i- x TW 399 93' 1' RIVER RICH TC 40 . 4 400.&5 RIP P -x 398.88' o 1 CURB CUT �x 1 x� � r"� RAT PVC 1" RI BIRC II I I I I TC 40 2'�^ 4" PVC CLEANOUTS I I \ �. gg V RI ER BIRCH GABION ASKETS I I I TC 401. 5i F O'A04 \ 3 92 1�l 39873 ',., y� �i� xf/ o I 4" PVC CLEANOUTS \ RIPRAi2 \ �} 39 7\ ���-------- s>6.7s _ _ � ... \ x TW 399 89 � 1398 8 ' / x 1"\�.IVER BIRCH\V � 1" R R BIRCH 398:�8 x�39875 399 �._.1 ... .94' - _ END SECTION / TC 40. T\ �� 399.771Rv OOT=399.23'(RoOF M)AlF�-----------400----------_��� 7f / 301--------------------------------------------40z------- ` ... / ... 403 ... /fC 03.41 -----' 6" CONCRETE C TIC 403.47' Qr� o� 300 Nj SURVEY LIMITS 402.60' 10 NOTE 1. THIS SHEET SEALED FOR AS -BUILT INFORMATION IN RED ONLY. 2. PROPOSED FEATURES SHOWN HEREON ARE PER PLANS ENTITLED "SCOTTSVILLE ELEMENTARY SCHOOL ADDITION AND RENOVATION PROJECT" PREPARED BY GRIMM AND PARKER WITH THE LAST REVISED DATE 07/01/20. 3. THIS AS -BUILT SURVEY WAS COMPLETED UNDER THE DIRECT AND RESPONSIBLE CHARGE OF CHERYL A. STOCKTON, L.S., FROM AN ACTUAL GROUND SURVEY MADE UNDER MY SUPERVISION; THAT THE IMAGERY AND/OR ORIGINAL DATA WAS OBTAINED ON 1212712021, 01/27/2022, 01/2812022, AND 3124/2022; AND THAT THIS PLAT AND/OR MAP MEETS MINIMUM ACCURACY STANDARDS UNLESS OTHERWISE NOTED. MAGNAIL N:3821804.00 E 11479728.49 Z 397.98 LAT'37°49'08.81" LON.78°30'39.73" 104 HLE .� 1 1=/4B .84 ( ISTII INV UT=396. ( ) GRAPHIC SCALE 5 10 20 ( IN FEET) 1 inch = 10f1. 40 Y jppvr�) C RYL A. STOCKTON Lic. No. 2425 3/14/2023 SURv�� 0 ,r,^^ u l C) O J � O !r Zr 00 V 0 U� 0- Cn ' r I- H Z w U o WU Lu � -) w J 0= Q z0� zQ WCO LU C � J G WZ1 w J 0 U) ¢O W 0 Lu �W Ja Ir �> J> -0 �,_ O� LUz n � >Z ¢� CCn W < > Q J J J zD 0 0 co O H oCch UZ 00 Q Cn Q W W REVISIONS 004/11 /2022 STORM 404 A05/04 STORM 502 A08/03/2022 REV, 406,502 & DRY POND ®10/11 /2022 REV. 502 & DRY POND A 10/21 /2022 REV. 502 & DRY POND ©12/27/2022 & 3/14/2023 REV. COUNTY COMMENTS DESIGNED BY: DRAWN BY DHP CHECKED BY CAS SCALE: 1'=10' DATE: 03/24/2022 PROJECT NUMBER: 20060129-010503 3 3 OF 5 181 171 161 151 141 131 121 111 101 91 81 71 61 51 41 31 21 1ycH OF vI� CdtlMI NiCMMERIRUCRIiIYRE IV4 ` '•`-' µ ' r/ / /'/ /J // % °;-- ' � / / J - aaa J;U ,POIN40F i JJ JJ /J' as / \, \ ♦ a PRE-DEVELQPEDIfNROUT&APA � t '+ a :: sC�7� 1 D 'P O CiI1;RYL A. STOCKTON ` a ° 1 J J / �- a , AREA = 0.10 ACREAS / JJ J J / ®\ a °°\ WATER QUANTITY CALCULATIONS: .t` Lie. No. 2425 JG J J / ell} `` \�`'\ ' _`X,f01E.OFCONC1yNTRATIgIQ=1�tlMly./® /` / .--a--', '` i`° a c - r �n ITII I\. U11711LR 3/14/2023 as %' �! cp ' -' `aa ``♦ R CHANNEL PROTECTION (ENERGY BALANCE): tr/ //J rJ a 0\, J \ I s+a.a , \ ,. Qe0360Ev TOTAL 5 0.8' (QPR60Ev OIMSITE' RVPPE-DEv) / RVPOST-OEy ly �` • ll:\4� \n VI li C t •pp a yJ r �_a- �'1 \ / / as/� Jam/ _ r-a-+ `♦ ♦\ ``♦ \ `\ / YII /_r a , a a a ♦-' J� '�✓/ Y ��I� u _ / "II��-p �fo���� ," \ `: r 2.451 CFS 50.8'(4.20 CFS0.430 AC/FT) 10.560 ACIFT 5 OK 2.45 CFS2.58 CFS M a T J ./ s ' / ale JJ -_' -�,J r \ \♦ as a , /1w f JJa laa� a :.3 as as ` \ `aa J as N�1 \�.o+� , \\` \� u;., Q TRASH RACK 4 395.99 -Q,00 YR WSE 394.78 FLOOD PROTECTION: POST -DEVELOPED Q,t 5PRE-DEVELOPED QIQ OC '- 2 O m „� v 2 •5 0) V s a>i m a1 Y„ L ,c 1 '➢ 1 `� J I / i a _ a _ , \ r , , o.\ DI-1 TOP 393.90 O J / JJ ,' ®,� 1 1 ! y ti ` / /� J J / -�. / -_- ; aaa ''� \a`\ • �`♦. 1 1 Q �� / / I /.,.. E =a i Y \ \ \ '` \ \ c - Q -10 )L WSE OK 14.34 CFS (POST -DEVELOPED Q,,) 5 14.77 CFS (PR&DEVELOPED Q,R) I I 393.85 O = (Y li Z j , , % • J 1 a `° 1 r �Ij-•°♦a ®_� F°'j_ `+�' 3sz.36 i 24' i STORMWATER QUALITY CALCULATIONS: 0 to ' �, ��� , - a -� `.' J ° / ( 1 rr f ° 8 F r 1 \ I 1aa YRwBE I33 39231 SUMMARY FROM RUNOFF REDUCTION SPREAD SHEET FOR N c a c W 0 y a0. / S u 1 I •- ,� f G__s____a__ , o �I i I '� �. �" _JJ/J a 0 J� e� t l �� cs \ 1 I J I 1! N Ja a _ '"7 1 0 I� j I I REDEVELOPMENT (SEE CALC. BOOK): I I I I u Q O E x o • N E ° Mle ��1,T ..-''-�e /° 1 / 1 �111 1 1 \'`-/_.-.•-1 "!!_��-s DISTURBED AREA: 3.04 ACRES RECTANGULAR NOTCH Z x O bQ m = � a L -V f 1 I aa +a `"a--` ' // 'a / / ---C-----a` 8 a'L«7y j1 1 1 'll WITH ORIFICE TRASH PRE -DEVELOPMENT LAND COVER: IN BSOILS: In ' \ v d 11 f✓� ` as _6 1 1 •. - -- ""CF 0 iitt 'r+ - 1 - / RACK SIDE OF RISER STRUCTURE 0.10 AC UNDISTURBED FOREST AND OPEN SPACE > n3 /] K - I eT aa+ -• I I s �� I r ' 1 I I 2.47 AC TURF I I 0.47ACIMPERVIOUS M K N N • T 1 d / % a J J / f J \ %I I I V`il /_ ` 1 1 I ORIFICE TRASH RACK I I SIZED AND INSTALLED 0) N , d N - ♦ I 1 P ° •r.. ~'� N ) d / l i I I POST -DEVELOPMENT LAND COVER: PER MANUFACTURERS SPECIFICATIONS. SEE I F�7.0"+i B SOILS: I I A i Y O 4-v 1 111 11 I ;+ / I \' d I 1 /✓ i/ 11 DETAIL. I 0.07 AC UNDISTURBED FOREST AND OPEN SPACE I 6.0"I 1.65ACTURF A 390 01 I I .z O= N >, >> LL m PR��4V�,EVELPPE I I1 1 , u _ ^ ,.. �, UN OUTED ARIA TRI / 1.32 AC IMPERVIOUS Q 80 O _ / p - - SHE TFLOW I / 11 / 1- a �n- _ - �• �l - 1 a I r ! GRADE 6 DEEP SUMP 3'X3' 12" THICK DI-1 WALL REQUIRED REMOVAL: 1.86 LBS/YR AGAINST BASE OF 01-1 UNDER BEYOND, TYP. w 0 O ' / a �,• r. J ORIFICE FOR DEBRIS SEDIMENT IS IN L 00) AND Cl FAN OUT_ ONSITE TREATMENT PROPOSED BY TWO BIORETENTION FACILITIES, AS CALCULATED THE VIRGINIA O N --+" �� fd// +_ MMf / -1 RUNOFF REDUCTION METHOD SPREADSHEET, TABS A(LEVEL 1) AND B(LEVEL 2). DRY POND DI RISER STRUCTURE 500 DETAIL SOUTHEAST SIDE LEVEL I BIORETENTION FACILITY: 0.64 LB/YR BNR NO SCALE LEVEL 2 BIORETENTIONLOAD FACILITY:ED: TOTAL LOAD REDUCTION PROPOSED: 2.02 LBNR J M "7 _ a - j 4` ; / .02L 1 / _\ �► `a = - a - J - a _' e - ••"+-+ q i 3 - a+'-""-`+••6-" , ® SURPLUS REDUCTION OF D.16 LBIYEAR AVAILABLE TO BE USED ON FUTURE PROJECTS OWNED BY THE E _ OI ®, / r " - -. •� - ,t ✓{ -- �. , s - r - _ �� J ' 14� �24'1 ALBEMARLE COUNTY SCHOOL BOARD, PER SVAC25-870-69 SECTION A PART 5. � o J addl -� , / / / i ,Ilk s / a JJ // f♦ / i % i / / 1`,e y` ' � DIRECTION BASKET EDGE .i C�7 OF FLOW v -+o._ 12" 12" PIPE OR 2 � m E y 0 v CI CIO W _ H O , 1 4 , S s / ` / ' / I / 24" LONG EPDXY CURB CUT DIRECTION COATED d14 REBAR m a (a Ln I / / / $ OFFLOW A PIPE �wUH O Y //M I I PRE -DEVELOPED ROUTED AREX 0 1 1 ®/ / // / / / SWM FACILITY 1 i I / /J / J JJ // e�oy/ A=4.15 ACRES / iJ JSJ J/ �✓ // /, // ORCURBCUT PONDINGARFA G. '.i> - EMB D8" PONDING Q O Q rti //I �/ / / / J If / r E OF CONCENTRATI09. IN. PRE / +^/ tJ ` rJ `r op/ J / / 18 L V , Q -DEVELOPED J r • / / DALE 1%/0' UNROUTEDAREATq SHEETFLOW / IF CONDITION i o ea as 1.0� NO. 57 STONE A STD. WIDTH= 1' Q Q J O C tPRE-DEVELOPED VDOT CLASS Al MARAFI 14DN Al STONE FILL RIPRAP, SURROUNDING ^' G l V O J FILTER FABRIC WIDTH 1=1.5' OR EQUIVALENT PONDING AREA WIDTH 2= 12' 3 Z �+ V Q O O t / .4 POST DEVELOPED UNROUTED AREA // JJ I - .-- - - ---aa - as 4•." AREA=0.10 ACRES J -/ BOITTOMI OF CHANNEL WIDTH SECTION A -A JJ JJ J-"' POINT OF ANALYSIS - CN=91 -' t J J r -- `++a " t TIME -Of OONCENTRATI 17.6 MIN. r ee /s ® a , 1 _ _ - � J J ,� \ •` GABION BASKET FOREBAY WALL BIORETENTION FACILITY 2 ( ) GRAVEL FLOW SPREADER PRE-TREATMENT DEVICE ( � U _ / \ '\ -" -�JJ \ \a °,1 r } 9 3g �� 6TORETEN DROJ./TEDARFa ,.�'� `aa \\`♦ 5 °`® NO SCALE No Scale `-' Z 1 TO BIORETENTION 2i a_-'- ��-'--aa \` .1 - A=0$6ACRES / r ' as \` \ �, GP #21850 L11 U o s `1 1 `-ON t / -� a_°` `,. Tt O,pICENT IO{J=SHIN. �- r- `a+a , ° \ , �` 1-VR ELEV=401.15 t-VIZ ELEV=399.79 2-YR ELEV 401.22 6 2-YR ELEV=399.86 5 U ` W W F .. a /..t ,.ram J+' __g` °♦ \` as °` p - s,f - -- a a as , \° / © NYLOPLAST 24"BASIN WITH DOME 10•YR ELEV=401 A0 NYLOPLAST I B° BASIN NTH DOME 10-YR ELEV=400.01 GRATE 100•YR ELEV=401.69 GRATE 100-YR ELEV=400A5 F- 4]' F LLI `� /1� 1Cc P , POST -DEVELOPED ROUTED AREA"' ��®�yy�y -°\ \\ 'TO SWIM FACILITY _,J \ a a a & \ \ a AREA= 1.98 ACRES CN=90 .e TOP:.4BQ98' TOP:-3B9:6& 401.73 399.67 CLEANQUT CLEANOUT W v J O Q L Q MIN.5GFCO�ENTRATION a zgWLmL \ �� �\ '� 3 �. BOTTOM OF ^�� t W Z U ° \ ° \ �� , �• f \ `�° ° , \ °"' BIORETENTION BIORETENTION WASHED SOD PER BASIN-499:4i400.92 BASIN399:99398.78 PERMANENT SEEDING MIX ELEV: 400.17 ELEV!396.75 > J � LLI O LL- W _ in E 40'' ; � '��� " ` ` , / 0 ° ° 190. 0� � \ 4 OR APPROVED EQUAL. WASHED SOD PER PERMANENT SEEDING MIX Z C G Q 0 , 400 0 %, ` 4 - 24" BIOFILTER MIX ELEV: 398.17 OR APPROVED EQUAL 3"NO 8 TONE R 38 BIOFILTE MIX >_W Q Q w � � - `ty 400 T - n /- - - o III 21 OF NO 57 STONE ELEV: 39617 3"N0,8STONE 24" OF NO.57 STONE L.L I O :� O" r _. - _ - .- _ _ _ - / 4 / e i t 1yIA 1 I t 1 d II r 111 1 4' RF RA 15" RCP SCHEDULE 40 1_ U Ir Z Q - PVC UNDERDRAIN MIRAFI 140N FILTER SCHEDULE 40 1%MINIMUM SLOPE V'38375 z d �^ vJ V J v ) W :� > FABRIC OR EQUIVALENT. PVC UNDERDRAIN, TO BE 2'WIDE 1%MIN IMUM SLOPE ! E FABRIC CENTERED ON 15" RCP I CC W LLI Q J � J J J_ J_ `•a .a ®\ / _.-_ pl .,,, Ja � I 0 - -- x ` I i(TSeA 'W� / INV INTO RISER 394.75 OR EQUIVALENT. BE 2' UNDERDRAIN WIDE CENTERED ON UNDERDRAIN � J O _ � Z > > O Q (!) (n D *, - f a a a a _ _ > •W r"- `- "., - `� - ,��pq�q, 1 I ! l as+ 1 1 1 e NOTES 1. 24' BIOFILTER MEDIA DEPTH SHALL BE THE MINIMUM DEPTH AFTER A SETTLING NOTES PERIOD OF THREE DAYS. 1. 36" BIOFILTER MEDIA DEPTH SHALL BE THE MINIMUM DEPTH AFTER A SETTLING Z = LA> LLI � L� D !- V r� I / , ~ ~ U Z �... ! 1 d /' "�s ; �+ Ia I ��p+P 1 �� PERIOD OF THREE DAYS. QUALITY SIZING CALCULATIONS QUALITY SIZING CALCULATION: DRAINAGE AREA = 1.29 ACRES (BIORETENTION IS SIZED FOR 90% OF AREA NTH REMAINING DRAINAGE AREA = 0.84 ACRES TO BYPASS THROUGH THE RISER UNTREATED IMPERVIOUS:0.16 ACRES T('/)= 2,473 CF X 1.25=3,091.25 OF C`4 � C/I LIJ i (D Q Q LL r /1 U) � c) Q " / REVISIONS [, , I (;J 1 f ,/ / dl /III,.,, '1 �. ' f I IMPERVIOUS: 0.36 ACRES 0.40 ACRES) T(v)=1,864 OFX 1.00=1,864 OF PERVIOUS: 0.68 ACRES Z Z O Q 1 1 04/11 /2022 Qp _ - a �a �, �, - f I/ / I ,. �� / I h 1 I f li /I / '� PERVIOUS: 0.78 ACRES (90%OF 0.87 ACRES) DESIGN STORAGE DEPTH: IT X 0.25)+ (2' X 0.4) + 0.5' PONDING = 2,05' 1 1 � LI 404 STORM I !1 / f i t + POSf-DEVEL�Lj- DESIGN STORAGE DEPTH: (2' X 0.25)+ (2' X 0.4) + 0.B PONDING = 2.2' SURFACE AREA REQUIRED: T(v) I DESIGN STORAGE DEPTH -> 3,091.2512.05'=1,507.93 SIF J 1 w w 05/04 a0s' ` UNROUTED AR SURFACE AREA REQUIRED: T(v) I DESIGN STORAGE DEPTH-> 1,86412.1847,27 SF SURFACE AREA PROVIDED:160� SURFACE AREA PROVIDED: 874 SF PRETREATMENT FOREBAY REQUIRED: T(v)"0.15 = 3091.25'0.15 = 463 CF - W Cr3 Q STORM 502 C SHEETFLOW E ❑ / r .� //'' / PRETREATMENT FOREBAY PROVIDED: 468 CF BIORETENTION FACILITY 1 DETAIL LEVEL 1 BIORETENTION FACILITY 2 DETAIL LEVEL 2 -f J p C 08/03/2022 EV. 406,502 & DRY POND 10/11/2022 J % NO SCALE NO SCALE Q F EV. 502 & DRY POND Ll /405 t , _ \ , �- / / ,, = �.. _ _ -. "•+--.- _.J ',♦ d/ / / / / E NOTES: BOTTOM OF CURB LINE 0/21 /2022 EV. 502 & DRY POND DATE DESCRIPTION / r ® J 1 / , - o -"" YES _ - J 1 9 / • 470 b 1 ! / - ��•- � - ! J / ,, BOTTOM OF CHANNEL 0.5' CHANNEL D.5' 1. THIS SHEET SEALED FOR AS -BUILT INFORMATION IN RED ONLY. ) GRADE OF DEEP. SURROUNDING SLOPE RIPRAP NOT TO IMPEDE DEEP, 2/2520 REVISIONS 12/27/2022 & 3/14/2023 EV. COUNTY COMMENTS 4/06/20 REVISIONS B ( i - - o , ++ + , o` `' J� /i '�i // it / r //I STORM FLOW TO OPENING 2.) PROPOSED FEATURES SHOWN HEREON ARE PER PLANS ENTITLED 4 �III SCOTTSVILLE ELEMENTARY SCHOOL ADDITION AND RENOVATION F ... PROJECT" PREPARED BY GRIMM AND PARKER WITH THE LAST REVISED O6/18/21 AMENDMENT B D SIGNED BY: 7l01/20 REVISIONS D AWN BY: I , / / / / ® / / / e DATE 07/01/20. -Y J' IN DHP C ECKED BY: CAS /J +ry/ / / / f POST -DEVELOPED ROUTED AREA , ,, ,, J // / / / / , I KEY 6"-9" FOR ENTIRE PERIMETER TO AREA1. ENTIRE 1 , , ` I/ 0 / i / / / I AREA=,.29 ACRES ��'\ 1 / / / QN=81 `+a + / I 0 / // / / / / , a---r t % / � 3.) THIS AS -BUILT SURVEY WAS COMPLETED UNDER THE DIRECT AND VDOT STD. CLASS AlSALE: RESPONSIBLE CHARGE OF CHERYL A. STOCKTON, L.S., FROM AN ACTUAL CHANNEL SECTION RIPRAP RECESSED INTO 1'=10' TIME OF CONCENTRATION=5.0 MIN. > J/ / J / I J GROUND SURVEY MADE UNDER MY SUPERVISION; THAT THE IMAGERY GROUND r /' POST -DEVELOPED r`J /® t�J rrJ F>J rJ' % r� // /J // , / / AND/OR ORIGINAL DATA WAS OBTAINED ON12/27/2021,01/27/2022, MIRAFI140NFILTER C6 O DTE: 03/24/2022 UNROUTEDAREATO J ..� r / / BOALE 1"-10' 01/28/2022, AND 03/24/2022; AND THAT THIS PLAT AND/OR MAP MEETS FABRIC OR EQUIVALENT a,-- SHEETFLOW L JJ ' / i -- ,J POST -DEVELOPED CONDITIONy, I o 4o ao' MINIMUM ACCURACY STANDARDS UNLESS OTHERWISE NOTED. RIPRAP CHANNEL DETAIL 119120 P 0JECTNUMBER: 20060129-010503 �. J �- +a_-� i / r No Scale acm�xaw Ergxu aeanEcmeerx: A 4 181 171 161 151 14 131 121 ill 101 91 81 71 61 51 41 31 21 11 4 OF 5 r oN O _0 p " Z 0 N0)(O rn NA l) C04 M Q m Oi 0�W CL Q1 M coo Q� N a_ Cl) L) L MM M h 0 Ny� ^�Z CD p v Z Q n W CD C M, U)OM04 FOZZ (AF O 0N, C wO M�Opp N (O (nOt F 0 } n 0O �Y Z O wQ wO0 pv 0 > > C) M O > Q > Z ) > �(nFz Z N (nFz N o) Cl) (nOZ 415 415 415 415 415 415 N 410 01 410 n a- a of `co 405 v °' 405 m o CD (n o M w �M OO 0 400 400 395 395 \ 103-1�7 55.60 OF 18" RCP 3905.04%@ • 390 S 2. 18„R �R Z3% 385 VDOT ST . 385 CLASS BROWNSTONT RIPRAP. SEE P AN SHEET C5.0 380 380 375 375 a o m 9+50 STR011+00 11+50 104-100 PROFILE HORIZ SCALE: 1"=50' VERT SCALE: 1 "=5 410 410 405 405 400 400 \ 395 395 60. 9 .207 L 390 390 3 82a @S RC F p 385 DOT STD. 385 CLASS Al BRO NNSTONE RIPRAP. SEE PLANS IEET C5.0 380 380 375 375 q M 9+50 011+00 1, STR202-200 PROFILE 100 YR WSE 394.78 10 YR WSE 393.85 1 YR WSE 392.51-� DRY POND BOTTOM = 890.29 SEE SPOT ELEVATIONS ON SHEETS 1 AND 2 ROOF DRAIN PIPES FROM NEW BUILDING ADDITION INV. = 399.36 HORIZ SCALE: 1 "=50' 0 VERT SCALE: 1 "=5 CD 0 M M Ics LO ri ^ M+1 0 4n5 UOz, 410 410 405 405 400 400 301 50.32' OF 1 "CLASS IV RCP @ 0.50% 395 395 DOT STD. CLASS Al BROWNSTONE 390 390 PLAN SHEET C5.0 385 385 380 380 375 375 o a�i �} M 9+STR 301-+�� 300 PROFILE HORIZ SCALE: 1 "=50' VERT SCALE: 1 "=5 SURROUNDING EFFECTIVE TOP OF DAM AT 396.00 any LOW ARE A FOR EMERGENCY OVERFLOW AT 395.00 400 400 500: ES-1 for 24" RCP Pipe (Outl STA 11+31.76 \ TOP 392.00 INV IN389.75 (5 1) 389.59 395 395 \ ' 39 - 390 501 03 56.24 O END OF ES 1 32-940F 24" RCP ©0.7 %@°Q 38 385 CRADLE VDOT STD. 380 C SS 1 380 RIPRAP SEE PLAN SHEEI C5.0 375 375 OD (OM QJZ N^ gao (hM �O m MM MM rn Cl) rn� 0)o, MM 9+50 10+00 11+00 STR 502-500 PROFILE HORIZ SCALE: 1 "=50' VERT SCALE: 1 "=5 It) 12+00 12+50 a) m E 0 t m 0 ro 0 p L .3 c .N m m M W W O IT 4?n a U O vh w 0 v N W A M 0 420 rn Co O o O O (O Cl) MM m O C 415 0� a 415 rnv rn N CD 4Q0> > 410 m 410 405 405 1 400 400 395 395 405 403 05 120.411 }ggg OF 465 8W 18.8015" \ 15" RCP RCP 8 46 \ u @ 4-989c .42 /0 1.30%@-i--99% 40� 3 4 �60 Op ` 390 390 �O1y6 385 VDOT STD. 385 CLASS Al BROWNSTONE IPRAP. SEE PLAN SHEET C5.0 380 380 R V R M M 9+50 10+00 STIR 406-400 PROFILE HORIZ SCALE: 1"=50' VERT SCALE: 1 "=5 13+00 13+50 jf U3/14/2023 NOTE 1. THIS SHEET SEALED FOR AS -BUILT INFORMATION IN RED ONLY. 2. PROPOSED FEATURES SHOWN HEREON ARE PER PLANSENTITLED "SCOTTSVILLE ELEMENTARY SCHOOL ADDITION AND RENOVATION PROJECT" PREPARED BY GRIMM AND PARKER WITH THE LAST REVISED DATE 07101120. 3. THIS AS -BUILT SURVEY WAS COMPLETED UNDER THE DIRECT AND RESPONSIBLE CHARGE OF CHERYL A. STOCKTON, L.S., FROM AN O j ACTUAL GROUND SURVEY MADE UNDER MY SUPERVISION; THAT V� THE IMAGERY AND/OR ORIGINAL DATA WAS OBTAINED ON Z 12/27/2021, 01/27/2022, 01/28/2022 AND 3/24/2022; AND THAT THIS Z 0) 0) PLAT AND/OR MAP MEETS MINIMUM ACCURACY STANDARDSca UNLESS OTHERWISE NOTED. d L . • d T (p 0 O/ ` l6 l`M►J 0' LL Z > Y/ N O > � O IY W r�� a 5 Y a •m 2 E 50 a m x N Z O N N • 0 L6 t^^ ��►' N N �+ �av E i rn > o) c CD t w O o R M t� ti N M a 600: ES-1 for 12 inch Pipe (Outlet)- STA 11+47.97 TOP 403.67 INV IN 402.60 (601) 602: 15" Nyloplast Basin- Circular Standard Grate STA 11+30.20 TOP494.99 404.E INV IN4027.9 (603) 402.7 INV OUT492.68 (601) 402.E 604: 15" Nyloplast Basin- Circular Standard Grate STA 10+98.42 606: 15" Nyloplast Basin- Circular Standard Grate TOPS 406.47 STA 10+00.00 INV IN493.41 605) 403.36 TOP 408.80 INV OUT 493.49{603) 402.96 INV OUT 404.40 (605) 4?5 402.54 425 420 420 415 415 EXIST. GRADE PROP. GRADE 410 1 1 410 \ J 405 405 6 5 98.42' OF 8" HDPE @ 1.00% 400 400 603 3+46-' OF 34.69 12"CLASS IV RCP @ 4.99% 0.55% 395 395 601 OF 23.25 12" CLASS I RCP @ 0.47 390 390 VD T STD. C ASS Al BROWNSTONE RIPR %P. SEE PLAN SHEET C5.0 385 385 0 0 0 0 R V• V 7 z Or-1 Ln �0 0 O Q I ON Ir O0 0 Ir 0- Cl). vJ } Z w frU o U LLj W F O � z W m J a G Ir W z W J � ~n ILLO O L1J c 2w LLJ Q J JO`�z O°C >/z Q1r Cn U) U) w § > Q J z J J Coll Oo >> �� I_ch 00 >Q '0'^z U)< (J))C REVISIONS 004/11 /2022 STORM 404 A05/04 STORM 502 A08/03/2022 REV. 406,502 & DRY POND ®10/11 /2022 REV. 502 & DRY POND A 10/21 /2022 REV. 502 & DRY POND ©12/27/2022 & 3/14/2023 REV. COUNTY COMMENTS DESIGNED BY DRAWN BY: DHP CHECKED BY: CAS SCALE: 1'=10' DATE 9+50 10+00 11+00 12+00 03/24/2022 STR 606-600 PROFILE PROJECT NUMBER 20060129-010503 HORIZ SCALE: 1 "=50' VERT SCALE: 1 "=5 C 5 OF 5