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HomeMy WebLinkAboutWPO201600072 Plan - VSMP 2021-06-07r� II� I I I I I I CHARLOTTESVILL TMP 56-87.1 BOLTON, CONSTAN TRUST & SHIRLE BOLTON WB 2013-163 � I I / , / I `• ." _✓ I I k II I II I �gOg03q•6' ITMP 77-4OC2 . j JACKRABBIT _ S L j I DB 3155-18 ZONE: LI USE: DRY 1 CLEANERS ' N 78276 Q ELEMENTAL ECOTECH, LLC DB 4796-325 0 -; - — ------------------------------------- _ _ _ Refer to Sheet_ ------------- � 'M -- --- --- - r-5i1 .. _�- I NII 111 II I I ❑ Existing Industrial Building Existing Asphalt _—__—__J Parking 1'i I I I rr__r_ TMH57M I I LLC`I f DB 5033-635 ZONE: LI II 1 USE: DIST. WAREHOUSE t mxc nnwxc suu rwau III III l I t 0 /N \ Illlli� � r..l■�w� � \ 11 O_ ° �F0 1 - S 57003'54,, �... E TMP 77-40__ " ■�'� MARTUC LLC ♦� - __ D.B. 3847, Pg. 332 � ___- �' i ----- - -- - ----------- -- C, S-- 5zz�• »E — ,� 1�1, �. ZONE: LI � �,w�, __ USE: DIST. i ` -- } WAREHOUSE l �_- ♦� -- /�♦-----1 O -- - -. I � I / I / ♦ 1 / I •CWo 100` Y J FtN �?o P F(0 R FFM w- S57�3'S4"E CCFSS R/ligT ------ -QDR�RI-'A------- -'� N 57°03'54" � m w 46.00 . �AS.6 T . 57 A4 E ♦r W 162.00' tit o 'q�B, � S 87.03 2g' '♦� 0 OD F �•...�.�.��/ /SRD TRICT TMP 77-38B RIVANNA WATER & SEWER AUTHORITY DB 768-277 DB 616-135, PLAT ZONE: LI USE: VACANT 100— Y F,Z00DP q NMA N WPO 201600072 - AMENDMENT #4 VSMP FOR WOOLEN MILLS LIGHT INDUSTRIUAL PA-DLI,,K TAX MAP 77, PARCEL 40B �-I SCOTTSVILLE DISTRICT, ALBEMARLE COUNTY, VIRGINIA Purpose of This Amendment 1. The purpose of this Amendment is to create Phase 2 and to revise Phase 1 buildings, roads, and utilities. The Intersection of Ford Road and Moores Creek Lane has not been revised. 2. The existing easements recorded in DB 5198-30 8c DB 5198-45 will have to be revised prior to approval of this amendment. The Easement Plat has been submitted under sting Industrial buldin� I I separate cover. I I SITE DATA COMM4ERCIA VTALS, LLC293-53 ' --- j SITE PLAN NUMBER: SDP201600076, SDP 201800065, SDP 202000029 1786846PLAT ?ONE: LI WPO PLAN NUMBER: WP0201600072 ,': STORAGE IREHOUSE 7 LEGAL REFERENCE: TM 77, PARCEL 40B I ' RECORDED PLATS & DEEDS: DB 5198-45, DB 5198-30 DB 4796-325, DB 4673-132, DB 4790-637, DB 4935-90, °' • t DB 4797-416, DB 676-326 OWNER/APPLICANT: ELEMENTAL ECOTECH, LLC 809 BOLLING AVE, UNIT C sting Indus ial baud CHARLOTTESVILLE, VA 22902 MAGISTERIAL DISTRICT: SCOTTSVILLE i ZONING DISTRICT: LI — LIGHT INDUSTRY, FLOOD HAZARD, STEEP SLOPES (MANAGED AND PRESERVED) PROPOSED USE: EACH BUILDING WILL BECOME PART OF A CONDOMINIUM. USE OF EACH BUILDING SHALL BE I BY —RIGHT U. �—' PARCEL AREA: 14.06 ACRES I/ ' PARCEL ADDRESS: NOT ASSIGNED SOURCE OF BOUNDARY: PLAT RECORDED IN DB 4893, PG 401 I SOURCE OF TOPOGRAPHY: TOPOGRAPHIC SURVEY PERFORMED BY DRAPER ADEN, DATED FEBRUARY 20, 2015 OFFSITE TOPOGRAPHY FROM ALBEMARLE COUNTY GIS DATA. � TMP 77-38B RIVANNA WATER & SITE GRADING IS ONGOING AT THIS TIME SO EXISTING TOPOGRAPHY CANNOT BE VERIFIED. tv SEWER AUTHORITY DB 768-277 DB 616-135, PLAT FLOODPLAIN: PORTION OF PARCEL IS IN ZONE X AS SHOWN ON FEMA MAP NO. 51003CO289D, EFFECTIVE DATE d, ZONE: LI FEBRUARY 4, 2005, AND MAP REVISION DATED FEBRUARY 6, 2017. 100—YEAR FLOOD ELEVATION IS USE: VACANT _�' 324.00. - �--� SWM VOLUME CONTROL: STORM WATER MANAGEMENT SWM-1 AND SWM-2 WILL PROVIDE VOLUME CONTROL. — SWM WATER QUALITY: LEVEL SPREADER TO CONSERVED OPEN SPACE AND PURCHASE OF NUTRIENT CREDITS. TMP 77-40A --------------------------- RIVANNA WATER &, PUBLIC WATER SUPPLY: THIS PARCEL IS NOT LOCATED WITHIN A PUBLIC WATER SUPPLY RESERVOIR WATERSHED. SEWER AUTHORITY DB 565-288'. DB 331-554, PLAT -------"- ZONE: LI I USE: VACANT I / SWM FOREST AND OPEN SPACE EASEMENT NOTES: 1. THE SWM FOREST AND OPEN SPACE EASEMENT IS SUBJECT TO THE GUIDANCE SET FORTH BY DEQ IN THE VIRGINIA J STORMWATER MANAGEMENT PROGRAM. THE AREAS WILL REMAIN UNDISTURBED IN A NATURAL, VEGETATED STATE, EXCEPT ---- FOR ACTIVITIES AS APPROVED BY THE LOCAL PROGRAM AUTHORITY, SUCH AS FOREST MANAGEMENT, CONTROL OF " INVASIVE SPECIES, REPLANTING AND REVEGETATING, PASSIVE RECREATION (E.G. TRAILS), AND LIMITED BUSH HOGGING TO MAINTAIN DESIRED VEGETATIVE COMMUNITY (BUT NO MORE THAN FOUR TIMES A YEAR). I 2. AREAS OF FOREST/OPEN SPACE SHOWN ON SHEETS C-501 & C-502 ARE TO BE DEMARCATED (FENCED OFF) PRIOR TO LAND DISTURBANCE r 00 Str ty ��� Rom' F ..i•../�� •i �o0 01 g90 / \f TMP 77-40B ELEMENTAL ECOTECH, LLC ` \ / V /• DB 479 ! co I y Cp 14.06 ACRES 3g 141.19 9qRefer to Sheets ZONE: LI 3j -0 USE. VACANT l �9,7� C-502 \.. C— 504 i \ \ C— 508 \ \ r s�• \ \ 1�� `` 100 00 / 3 / TMP 77-21 \. \. r f` RIVANNA WATER & SEWER AUTHORITY D.B. 3594, Pg. 660 ZONE: LI\\ USE: DVACANT o 0 9 ss 77° 06.0> o Co N. PARCEL OVERVIEW �' 0 50' 100' 150' o -o 1 ° -50 SCALE: 1" = 50' SCALE: 1 "=50' Land Use Table APPROVED by the Albemarle County Community Development Department Date 6/7/2021 File WP0201600072 Description Pre -Development % Post -Development % Buildings 0 0.0•0 73,084 11.9% Paved 18,300 3.0♦5 130,781 21.4% Pervious 594,228 97.0% 408,663 66.7% Total 612,528 100.00/0 612,528 100.0■OA LEGEND DB DEED BOOK PG PAGE FH FIRE HYDRANT WV WATER VALVE WM WATER METER FEE FINISHED FLOOR ELEVATION LEE UPPER FINISHED FLOOR ELEVATION BSL BUILDING SETBACK LINE PSL PARKING SETBACK LINE PP POWER POLE SCC STORMWATER CONVEYANCE CHANNEL WP WALL PACK ULD ULTIMATE LIMITS OF DISTURBANCE TP TREE PROTECTION FENCING B/M BLANKET MATTING FOS FOREST / OPEN SPACE SIGN PRESERVED SLOPES PER GIS ® MANAGED SLOPES PER GIS + + EXISTING TREES TO BE REMOVED ®VARIABLE WIDTH FOREST AND OPEN SPACE EASEMENT SHEET INDEX C-500......... COVERSHEET C-501 ........ EXISTING CONDITIONS & DEMOLITION PLAN C-502 ........ EXISTING CONDITIONS & DEMOLITION PLAN C-503 ......... PHASE 1 EROSION PLAN C-504 ......... PHASE 1 EROSION PLAN C-505 ......... PHASE 2 EROSION PLAN C-506 ......... PHASE 2 EROSION PLAN & SWPPP C-507 ........ GRADING & UTILITY PLAN C-508 ......... GRADING & UTILITY PLAN C-601 ......... EROSION NOTES & DETAILS C-602 ......... EROSION DETAILS C-610 ......... STORM PROFILES C-611 ......... STORM DRAINAGE AREA MAP C-612 .......... DRAINAGE DETAILS & CALCULATIONS C-620 .......... VSMP HYDROLOGIC CALCULATIONS - POINT OF ANALYSIS 1 C-621 .......... VSMP HYDROLOGIC CALCULATIONS - POINT OF ANALYSIS 2 C-622 ......... VSMP HYDROLOGIC CALCULATIONS - POINT OF ANALYSIS 3 C-623 ......... VSMP STORM WATER QUALITY CALCULATIONS C-630 ......... EASEMENT PLATS C-631 ......... EASEMENT PLATS 2 VICINITY MAP c-50 SCALE: 1 "= 2000' �y044 0 j P�oF O O z 0 o co x O z m A U0 co z w w a z �14 A � W � U A z �z �z �a O CQa F --� N O Cat Q] > Ua�z C0 A Uin�Pq LJ * WEW 00O I� Z a�a U - W w A z 0 aCal U) ;z; z W A U U 0 C) z tz W � � � z � Q W � z H / a h E SHEET NO. C-500 SHEET 1 of 20 11 .AllI \ — sl' I � / -�-OS\ E E A \ WA s E t Y D ACCE 326 - 56 D� sq5 B_ o of%. ° L a / / / / ET 1 Il PRESERVED SLOPES PER GIS �rA c4v� J� y MANAGED SLOPES PER GIS R / \ __---___---- \�-- � — \ EX WM \� \ \� �EXISTINGTREESTOBEREMOVED d � � 1 __ — — ® VARIABLE WIDTH FOREST AND OPEN / sds / Ore OU R' I — — — — / f 1=��° uT T — i SPACE EASEMENT // IrhPo (0 PU / — UT /� LEGEND y0� �pF 3 NN UT �T' ` —�I 1 i \ DB DEED BOOK — — x \ I / / // PG PAGE 1 c IIIJJJ UT — _ f \ / / / \ / FH FIRE HYDRANT WV WATERVALVE WM WATERMETER ?r o I FFE FINISHED FLOOR ELEVATION CIO / — — — a r UFE UPPER FINISHED FLOOR ELEVATION o x \ \jL0 �` �— — �`q� \\ \ �� BSL BUILDING SETBACK LINE '—_— — PSL PARKING SETBACK LINE rn d ;2i E PP POWER POLE SCC STORMWATER CONVEYANCE CHANNEL O w w > > > —390 I I \ WP WALL PACK z-370 F] v — X! / / /k / / / / �I / /� / 0 \ \ \ I I 9. ULD ULTIMATE LIMITS OF DISTURBANCE W vj W W — — — — G o TP TREE PROTECTION FENCING d z x �i / // \ 1\ FOS OREST/OPEN1 SP ACE SIGN Q Q x X / / / p5 20' 0 20' 40' 60' k/ / k / k '. k // j / / / / / — — — \ I GI TX MH-3 SCALE: 1"=20' Z I I o r--- ------ - -� �0I\ _ o Q- w co oa k 11 \ \ wax k k k k k I I I---------i Imo— it ka A, k k k k k k 1 \ \ W oc� k -- k k k k k k - — — — — — - - k k DI pP �I I 1 u �L -, k \ \ EXISTING TBR I k k ( ) '` 9a I I 11 II I Z I c I kl k �\ kl kll k l kll k I k \\ k Ik k k k k ��1 I k k ` k k k L p0 1 1 I Existing Indus �F I I— I k l Ik I I k I I k _ 11 m s\ 1� I I Ik Ik � k ik k �r k k II k Ilk k k kl ki k k k k k EX ---- k I I ` IkI I k k k k I k/ k 11 I II k �Ok � 4p I z \ I I / I S /TI `� II��/ i k Ik k \ \ \ k Ik I \ z4s Existing Industrial Building /� Ek I k l Existing I Nc y�O/\O' V k IIkk I�l k k I I\\\ \ Asphal tCE k � 1 _� k k k Parking OQ kl k 519,3 / -NC m / i l I L---- Z k9n I ❑ Ik I I 1 I I x \ I k \ k\ k 4, I ` k\ k k k \ \\ \ k k 0 4 f ) k k / �s P00 I l I \ I kl I k Ik 1 kl k I I 1 1 1 1 I I k Il k Ilkk Ilk I k �l k Ilk k I k\� k k k\ k k k k\ \ k k k k k k .I Ik I k Ik kl k k m\k\ k k k\ I~ I I I I I I I I k I k l k k 1 k k \k k k\ \ k k�\/'� kEX I k I I k I \ k k \ k \\ k \ ic�� X- i- X — i�� R RETAIINIING WALL \ \ 1 1 1 I II I l k l k I k III k I k kl kl k\ k\ k k k\ k k X k\ \ k \k 6' HIGH CHAINLINK FENCE / \ II o TW=403.1 \ TBR \ k`kir k\� k k \�\\ k k k\�\ l \ II — \\ \ I 1 J I II I kl k l k\k kl \k k\ Ik k \\ k\402�\ l L=-- _- ---- \ \ I I I I I \k \ k \k k\ \k k k k 1\ k F Al \k X k k k\ k k k k 2 \Y\ k -__ / --- - EX 22 I \\ II I I I I I I I k\ \ k \k \ EXISTING TREES k k \\\ k k k \k k EX. CURB & I \ \ (TBR) kkk XI k\ k k k k I SIDEWALK (TBR) / k k k k I I \ \ k k k k \ \k k J \ I I I I I k CIA\ k \ �� \ k� k k J \Al I 1 I i I I I 1 I kll I I I I I I I I k \ k\ k �\ k \ k k \\ I I II k \ k \ k k\ k k\Ac \k k�/\ k k k k 0— — _ _-_ > \ k \ k \ \k \ k �k \ k k k/ k k ------ I �k Existing Indust 1 1 I I I I k l I k \ k �k A, \\k k \ k k \ k k k k X/ k k k k k \----------�tg2 --- I ( \ IA- I \ k k \ k k\ k \ A, k k ------ nrk \ l l \ \ I 1 \ \k \ k k\ k\ k \ k� k k I k k 4 / \ �'` k k k J k W \k I I I k k \ \k k * \k I 1 I I I I k k II k Ilk k\ k \k k �k k Al k k \k\ k k k k k k k�\k k \k k k ^k - -k k- - _ \ _ \ k k k -- — -400 — —\ k \ Al \ > \\ k \ k k\ k k k \k k kk k\k k k k ��k k\ k k k k \11 I I I k I k I I k k l k \ k\ k k\ k \�� k k X--k -x W k /�k k k k k k' — EX 21 k \ \\\ k I Ik \ k\ k\� k k k /k \ k- kl k k k k��/ k __ k ---�\ - - ------ k / k- k k - \ w CQ CQ I I I k I X I k \k \ / it I I I Ik I kl kl 1 kl k 1 \ k k k\ k k k ��k k k k---��---� k k k k k a �\ G----- o, k \ \\ \ k �\ k� �k k Al k k k - `-- ��_- 1p -EX. D Q k k I k 1 k k\ k k k CQ k I k\ k \ k \ k k k\ �\k / - o it 1 I I I I l k\ k\ k \ k k\ k k\ k k k k X� k/� k k k \\ \\`--- --` /// ��E�u I I k kl \ k\ \ \ k \ k\ k k k k k k k 390-- - _ _ \ I IkI k k \ \ k k k k k �k k� Xi/J-�� k\X \ , V\ h\ k\\k \ k k \ k k \ k k kkk k k k k k/ - - Nc k- k ^ / k � z II Il I I I I l k\ k \ k\yf\ k\�\ k k\ k \� k k\� k k �\ Al k k k k 90—k�k k �k� �k -� k�k - k k_�c s°hid k k\� k k k k k --- ---Jc / k\ k \ \ _ a d i k a k k y k k A, III l I \k \k \ \k k\ k \ k \k \ k k k` k k k k k kNq/ N k k - -- - I k\ \\ \\�` r) w w Al \ k k --� � \k\k k \4 k�k k \k k k �k k �- k-� k k k k /'k k k�k �j{, � k k�dA�-bk/k���k�\\�\ c� \ k k k / k� �� /�C \ k k k �� I m \n I \ k '- k1k \ \k \ \k\ \ k �\ \k k/ k"� �4- k� k k rk k/k k// / \ �\ \ .k \k k k k �� �° 9 kl �� �� /� I \ � \k � k k � k k k / k k /k � � \ __ � �I- I k k / k - k k I A 1 - C) C) \ k k � y � k �k k k� \ \k� _�®-y- \ �/k/� k \��� \ k k _ k - A -- A- k �— — _ !! \ h\ \ k k k / k � k �/ k/ k k \ \ k\k� k k/- k-� k/k k k k k k k� _-������ �-- � � 39 0 1 I \ o\ \ \ k \k\ \ \k \ \k \ \ k\ k k k k \�X -- Al k/ k k/ k k / k k k k \ k k A, k k \ I \ \ k k— k \ k \ �k k �- k k k\ k a \�- z °, \ ---k k\ \ k\ \ k\ \ k k \ k k Alk k k k k//k k /k k/� k v\ k �\ k k \k \ A, k k kEXISTING TREES k k kk k kk / p-' Al \ 7) \�I (TBR) O -k ak \ kA\ k k z k k k k k k k k —k W Z ,� � � O \ \ \ \ \ :\F S \k k \ k\ \ k k k- -k i /k /k k/ / k \ k �k \ \ k \ k k k k k k k k Alk k k k Q O� / k Z� \ o \ k k/X k k \�k k... k k�\ k _k, k \ k k k k k k k k k k k k Z rW-1 W \ \ \ \ \ X \ < \ \ \ k \ k \ \ \ k / / .� 1/C-612 / \ A \ k k k k k Q Z �ro� \ \ \ k \ k� k k/ k k , k �' \ k k k k k k k k W O O O k v �k� k k k k k k k k EXISTING TREES k k k` — k k / v y� ,k k kk_ k Q� k� k �\ \ _ k\ \ o �Z k k k_ k -`- k k k k �k k k k k E" W k k k k/ (TBR) k, k k k k \ Al k \ k \ �'�' k� k �� A, k k k k - k k-_ _ =� k w x _ �y k \ \ \ \ k k k k k \I A, k k \ k k / k / \ k k k k- k k— o _k, k\� --k-J/ k k k k/ k// / �� k k \� �\ kk _k����j k k k k k Al k k (1 a W k \ - - 3 �k k - k Al k k \ A, k k w a T k k \ \ k k k k/ k k k k �Y �o k k k k A, k k k E- > \ \ ,k k\ yc 3� k �c --- k' k l h/ / k //k k k� \k - � _ k �\�� k ��_ A k k k k k �� I l' k \ ` \ \ \\ k k --- k k \k k k F E" �k /k k k \� k k -X- �k k �� k A k k k w F k k k k k \k k\ k k k k k-`-k k -k _\ \\� \ k _ k-k k k \- k-� k k k o w aJul Al Q k k / k / k k / k A, k k\ k k k k k k k A� _ _ _ _ SHEET NO. Ir A - k--k-kk�\ ���Z�q.-- �- k- �\ \ \ \ \ \ k \k, l �O �V O I H--� -k k ��/ k�k k�k/k//k k k k ��k� k \\ k k\ �s k k k k k k k k k \k\\\�\\�\� k k� \� k k-----�- C-501 x k -k /k /� x/ ki k kREFER TO C-502 , k k k �� k __k_ kk— �c - - Op k k \ k� '� k� k k k �_k SHEET 2 of 20 REFER TO C501 CI .III \� •\ \ \ \ � � � - \ � \ `\ '\ /" / / / /' /� �\\ \ � �I--- \L_ �\��3 _\ _-_---\--_ � � IA41, 31,\ \ \ \ \ J r z O if1--------�0"9 _ ___ _ Ill — — — — — — — 61, O d z x --------------\ C] W -- d \ \ / i / \ \ \ \\R / \ 'O'� \\\ \ \ \\ \\ U `—_ _ ' i/ /--- \\\ \\\ --_— \ \\ \\ \\ \\ \ \\\ \\ \\_ // /O o May \ UL w 00 Pp oh\ ULD \ \ \ \ — — / > —34Q— _-- —__-- —__—_ a --_\ —\\ \\ \\yl \\ \\ ----_ --- �� �U c \fir\ hp— \\ \\— S \\Oar\ 80 pq o,p \ \ - -- _ _ _-- ---_ -Z_I \ \ \ \ \\ \ 368-- P'x RR Shkeork \` gCSq 1 bhp -� - ----------------------------- _ _ --\\ CE\\\ \ \ \ \\ \\\ --____ Wor) -- - - - - - --- SO a / 'T- \ , Af00RES CR�EK--------------------� \\ FeNCEA/N Ol k \\ PUBLICRACr E SWIDTH E _EASEMENT pp I— X\----------------- / \I\ 19.46 /MCI-MH-04 ---- Top=327.10' — — _ 30" — — - _ _ li \ — Clay MCI-MH-03 In-310.90 _ — Y (RWSA) — Y� G Rim=322.64' L In Out1II80— — \ \ Inv. In=310.36 / cl INV-jq \\ \ \ I ---- / X\/// // / l I // // /NCO J \\ LE410 — ULD � / // / / \ \ � / % \ �` I I 1♦ ,Ii' � I ULD \\ / \ �SqJ \ \ If J /ULD / / / Y V20 s \ C \ --- _ _ I M N MC- H-02 — — \\Ri=319.20 / — \ "`III \ / I 3 " nv Out=308.69' C C O — — — — — — -- �\ I / / U E- E- / W � — U U Ca o 0 \TA // /// / / i/---- z z p _ \ \\ / c� / / c> DTP DTP DTP DTP_ TP \ \ \TA/, / / / / / o 0 / / I / I TP — — TP — LE402 46 z p � U] PRESERVED SLOPES PER GIS /-- \ //i \� / // � z o � 0 7 MANAGED SLOPES PER GIS / L~ + + EXISTING TREES TO BE REMOVED / VARIABLE WIDTH FOREST AND OPEN / \ / Q / // / / / / / O Z Z LEGEND SPACE EASEMENT - [~- W / [� Q DB DEED BOOK PG PAGE / `) '// F FH FIRE HYDRANT / \ \ / E. r- E- WV WATER VALVE / / \ / / F, > E- WM WATER METER G• / , \ / / \ \ U FFE FINISHED FLOOR ELEVATION 9. / / \ UFE UPPER FINISHED FLOOR ELEVATION o BSL BUILDING SETBACK LINE �� 20' 0 20' 40' 60 PSL PARKING SETBACK LINE PP POWER POLE SCALE: 1 "=20' SHEET N0. SCC STORMWATER CONVEYANCE CHANNEL ° I _ / LE423 WP WALL PACK � - ULD ULTIMATE LIMITS OF DISTURBANCE o I C�502 TP TREE PROTECTION FENCING I / B/M BLANKET OPEN SPACE SIGN I I / / SHEET 3 of 20 it O A I \ \ \I — \ — gos — I I I \ N 1 9 _ DISTURBED AREA = 6.57 ACRES gos9"/ EET II _ -_ \ \ \ -- ---- \\ \ o \\ o N �10 BgpADWAY 1115 \------- \\-- = Ex wM \ PHASE 1 SEQUENCE OF CONSTRUCTION\� �\ z o \` �/ 9?\ 1 �� gpUTE1C g/�� _ _ "- — —_ T— \1L — —1 Install perimeter silt fence and diversion dikes. 6 �Z I�Piy7 p' PUBL I _-- __" — � i � i / vg J\i I / /UT (6 __` \ �_��— -T ��--\ / 2. Install Sediment Trap ST-1 and Sediment Basin SB-1. �ti F� UT _ 3. Remove trees within the Ultimate Limits of Disturbance. - °46y0.0 e�° _ \ / / ' _ _� ��—/ �— \ y x 4. ST-1 shall remain in operation until site is stabilized and County \\\— _/_ — —\ Inspector grants permission for removal. z v�� \ 7vC� P=9�—�9,/may/ _ /—�—' �_,—�— �\� \ I 5. SB-1 shall be converted to SWM-1 after site is stabilized. o / — \ \ x ,, ___ - - �� = - ' ' - _- \ �- � -�_-_ � - - \ a , \ � II _LEGEND DB DEED BOOK PRESERVED SLOPES PER GIS _ / i / i \I / \\\ CSA I \ \ �� ��rPG PAGE S70— / i/ / i / / i / /< y / / / / ' /�/ /��� \ \ \ \ \ \� FH FIRE HYDRANT 0 MANAGED SLOPES PER GIS z Irl E- r e?' TP \ _— / j / i i O/ i i hl / = j / / / / — O \ \ \ �� W V WATER VALVE + + EXISTING TREES TO BE REMOVED O Q Z z x W P — / / EE lit SF / / i 8 / / / / ' / _ — / \ WM WATER METER Y STg ENT / / / i / i / / / — — — _ — — ��VV I FFE FINISHED FLOOR ELEVATION 04 0 U DwA AS EM _ i i / / / / / �'\/ / / / — s� \ \ UFE UPPER FINISHED FLOOR ELEVATION ® VARIABLE WIDTH FOREST AND OPEN SPACE EASEMENT Fa W i DPW ACCESS E \ ""'"" / / / ` / / i /'C\li / / Jj — " PUBLIC 675"326 ` — _ i X i i / / / / / / / / / / / 9a �/ \ \ \ BSL BUILDING SETBACK LINE wPEI L) 56'G ^ $/ /\ / �/ gas \ I PSL PARKING SETBACK LINE LE 30' 0 30' 60' 90' SCC STPP OORMWWER OATERCONVEYANCE CHANNEL \--- ' MH-3 WP WALL PACK SCALE: 1"=30' Z_ ULD ULTIMATE LIMITS OF DISTURBANCE ,Z TP TREE PROTECTION FENCING B/M BLANKET MATTING o FOS FOREST / OPEN SPACE SIGN 0 if I+-�.—�—=—�—u ----- W FcV CQ a�¢ wFw F J. \ / 1 I � x -- 11 I � z 9°s I II s ; Existing Indus W m h Z IlD r I 1 11 II II II II I II I I II I 1 I I Ir a II O - — — — — — — L- p0 I I I o I TS \ II n o\ 1 II II I I TS �� I I I I I I h o n 11 I I I M I \ o I 1 1 1 I I I I I I I I I I II II \ \\ \ L I I \\ 4X 4,5 Existing Industrial Building Z\ I I 1 1 I I I I I I I II I I 1 I I 1 \\ I I \ =— Existing Asphalt I II I I \ 1 1 1 I I I I I I I I II I 1 I I \\\ I I \\ _____ _ Parking I I �----� -� 1 \ I \ \\ \ \ I I I I \ 1 I I 1 \ \ -404- F 1 1 1 \ II 1 I I I II I 1 \ \ 1 \ \\\ \\ TS II MCA I I I I I I I I I I 1 I \\ \\ \\\ \ If \ D> /� RE coNc a------------_ -------------- I 1 I I 1 \ \ \ \ \ RETAINING WALL \ TW=403.1 \ \ \ 1 I 1 1 I I I I I I I I I \ \ \ I \ \ \ \ \ I \ \ \402 EX 22 I \\ \\ Ia I I \ \ \ \ \ \ \ 1 I —400— — — o l \ \ / Existing Indust \— — — — — — — -- _ \ o _--- \ E C ------ 390— I All 39 \<\ \\\I \ \\� \ \ \\ \\ \� a (2. •MJ1 � Z O FOS\ \ / // // // //\ \ \ \a \ \\ \\ \ \\ W F O \\ a---�— \\CAI\\ \\\\\ \\\ CWD Z W � W 1/C-612 ` �/ /-- \\\ S W O Q \ \ _ Z /// / / \ \ \ 'LS M�\\\\ _ —� .jo\\C�\QII'\�_ \\\\ \\\\ \ MU W \V\ \ \ _ \ E- r^ LJ E- ly.l — — — — // /// // \\\\ \ \\\\ --- — �----- \\\----- -- x W > w — -----_-- // // _ —\\ \ �_\ \\�SHEET NO. C�503 \ \ \ S \ \ \ \---- REFER TO C-504 SHEET 4 of 20 _ REFER TO C-503 \ 1 � \ N I d' �3 \ 0 O _ 00 \ \ _ &L — — — -360- \ — — — — \I \ / / \ o \ — — ca U o \\ \ \ / \ \ \ \ //' \ \ \----------------\ w w — — — — — — — — — — — — — — — — F \ \ \ RWD \\\ \ \ \ \ \ \ — \ Z 0 o°O00 o°0o� ° 0 0 0 0 0�° �00 7 0°0°00000000ood0u°o \ \� //' /�----- \\ \\ — _—__ \ \ \ \ `\ \ \ 1E� /' a0 _ — — — — —iTI'k W O •-- \ o 0°°0 0 ° OoV.F-i CC2 .fir 00 FX o00 o CE \ \\ \ \\ \ \ — \— / — — --- //// -� \ \\\\\\ RC \\ \\ \ \��/ _\-- // ���yy W�� — W co � \ x gym\\\ 8"OhP \ \ — — /-- — ------ __----_ _�— \ \ \ \ `\ \\ \� _ C4 00.W een \ TFR \ _ _ o — _____��-- oU RR Spk gCSq °hP ----------------------------- imb ID 0 --- OLD 6 __---�-------- ULD 8 CNgI \y 5 MOORES CRhK LANE -------------------- \ ONCE N CIIVI� `` PUBLICRACCE SA'IDTH DB - EASEMENT ----------------- 0p-YR - - - FEMA F/Opdpla m \ LD \INV= 1946, MCI-MH-04 _ Top=327.10' _ 30" _ Clay (RWSA) MCI-MH-03 Inv. In=310.90 G Rim=322.64' Inv Out=310.80' ! I (' �_ Inv. In=310.36 v Out=310.26 I / / -74-314.5— 314.51 _SB \ \ INV= (90 40 320.------ �/J0,• LE410 \ I I �j � C OLD / / \ �� I -� _OLD / \ \qJ ---- /OL Tp LE408 / \4�Aff 4)7 \\ / o-/ \ \ \ > / J / / MC -MH-02 36" In . In=308.79 — — 30" In '=308.79 - — \ 3 " nv Out=308.69' o E- / E- /' FH FLOOD HAZARD a — — — — — / I I \ \ OVERLAY DISTRICT _ / / / a E F ----- I \ \ o 0 � Tp TP TP TP TPLE402 TP DTP— Inc \ \ \ \ \ \rA S /' I TP DTP T� 46 z DISTURBED AREA = 6.57 ACRES /\\ \ \`\ \ \`�\A S PHASE 1 SEQUENCE OF CONSTRUCTION / \ \ \ / /� a a 1. Install perimeter silt fence and diversion dikes. / \ ` \\ ` / / / l�j / / 2. Install Sediment Trap ST-1 and Sediment Basin SB-1. \\ \\ / 41 ®/ / // \/ /f / _ / o 3. Remove trees within the Ultimate Limits of Disturbance.// // W \4. ST-1 shall remain in operation until site is stabilized and County Inspector grants permission for removal. \\ ` ��� \ \ aQ� / / /. / / Q W �D w 5. SB-1 shall be converted to SWM-1 after site is stabilized. � LEGEND DB DEED BOOK PRESERVED SLOPES PER GIS 40 PG PAGE — \ FH FIRE HYDRANT 0 MANAGED SLOPES PER GIS \ / / E a / W wv WATERVALVE // � \ F WM WATER METER + + EXISTING TREES TO BE REMOVED FFE FINISHED FLOOR ELEVATION � \ / / \ \ \ / / v Cl) a F UFE UPPER FINISHED FLOOR ELEVATION ® VARIABLE WIDTH FOREST AND OPEN SPACE EASEMENT \ BSL BUILDING SETBACK LINE 9. \ / / / \ \ / Pa. PSL PARKING SETBACK LINE o o \ \ ✓ / ' /Fn PP POWER POLE 30' 0 30' 60' 90' \\ \ \ / / / J I // SHEET NO. SCC STORMWATER CONVEYANCE CHANNEL \ \ / \ r\ C�504 WP WALL PACK SCALE: 1 "=30' o LE423 ULD ULTIMATE LIMITS OF DISTURBANCE - \ \ \ \ \ / / TP TREE PROTECTION FENCING o - B/M BLANKET MATTING FOS FOREST / OPEN SPACE SIGN m 7 \ \ I SHEET 5 of 20 9 / DISTURBED AREA = 6.57 ACRES A . II ------ ..II 1,1tib iQk/`�y%1�tia,'G�1 I a�° .e /a/•'V 1 I°I I I .I/rII .\��\\JiI/ I I I \l � ' /\ \iI \I' \ /or1I�/QI � I° I iI\II/ I / III II I II/I lI /�I / I(II( II aII /4I.s/°l 1II<Ar -r,`IL II1I 1\o\— < // � ` \ I \ /I\ a \I%II/ =\ / �aI /\1I/�I �/1 \ —1 I o/ I\I f'1\o1— \/1\ 11/ 1 I/ 1a I1 I /oI P I\ I/aI 1 IP \ .\- 1 y/1�/ I\ I1- I II I \ II//I— I? \\ I— I.\ I I110. -I / I_I — '_1/ I 1'I\ 1I_I— I 1 1_I1I l\ I_ III\ — I - I(I/II6I 1 _ II� II 1 / I_1/—///I— 1II 1 / I/I II 1/I / 1— / 111Ii— I /1/I/ //I/ I ('I1I (I II 1 // I 1'I1/I 1 I '1\ I/ / III I/ II II///I I I I I/ II_1 1// 1 1/ /III /I 1I1 1_ I/ %1 /I/ I/ I Ii( I jI —/1 I (I II/I/I / I =— I/AI I /I� / III /I /I / II/I //—/�I/I/ I/— II II' / I II 1/I I, /'\ /"I �.—Ii/I Y/ I ..//1 1.\ I /U I I,I— /1I/' . I,/ I/—Ip/ 3 I,/' /I I . — j -R/I/ ,—qIa._'/ .•sI'< / / I './ � //P' I/I —I/II— /�//I_/�EI/p/./,I I I NI/ / — (.I / T I/ /' I/ � / /— \/ � —/ ///I/I _ II I/I I / ' I II —I /// I/ I, —'I( E/I/I/ II/ ///I II \ �dI I/ h I% / Io//I/1e �I aIc// Q I/._/ / I//o I/ / I1 It/// I1/ I/I / /I/ / /1/ I/I/ \�ii\y/ ,1 /0 /II�/ I2/I�r /, I \/f Ci /I� //� \ I I\' \ ,/ \// // K / ///1 •k \k \// - \ I \— _I P /.HAI I IS I EI1 I III I I 2 \�lI SEQUENCE __\O_ \ _F_\J_CONSTRUCTION ONSTRUCTIO-N -\ \ = 6 �ZZaZW*wCW j ZodQx auWa\ �e 6Fa¢�Ww°H �a � 10 STREET BODWAY1115 1. Install site improvements as shown on approved site plans.F EX WM RODUgCR/W) Once site has been stabilized, contact count inspector to review 0 LI`site conditions. o3. Once site inspector has approved stabilization is adequate remove UT ST-1 and convert SB-1 to SWM-1. 440 z pLANDSCAPING NOTES: o 4. SLOPES GREATER THAN 3:1 SHALL HAVE REDTOP PANICGRASS 06,0.00 (panicum rigidulum) AND WILD HYDRANGEA (hydrangeaIP-----arborescens) PLANTED 6 ON CENTER. OP Cs rn NI LEGEND z/ STREET DBDEEDBOOK o Z zW�xPRESERVED SLOPES PER GIS OADWAEAEPG PAGE U°oFH FIRE HYDRANT MANAGED SLOPES PER GIS wU °o�ew o00PBLICACC5S326 rg qas WV WATER VALVE 56, D/w/Handrail FE WATER METER Oo FFINISHED FLOOR ELEVATION EXISTING TREES TO BE REMOVED Max He60 /_ ° -EX VH-3 UFE UPPER FINISHED FLOOR ELEVATION VARIABLE WIDTH FOREST AND ° BSL BUILDING SETBACK LINE ® PSL PARKING SETBACK LINE OPEN SPACE EASEMENT PP POWER POLE Zf 0 2 SCC STORMWATER CONVEYANCE CHANNEL ocat'AT WALL PACK ULD ULTIMATE LIMITS OF DISTURBANCE 0J acSCALE: 1=30C`i F cv TP TREE PROTECTION FENCING ING c�. OBS BL�ISP RElOPEN CESIGN ruCQ mZ FOS oo ZS 0U ew Retaining all D w/Guardrail ax egIP Existing Indus,PP 2-STORY 3,000 SF/FL 0 SIF co FEo394.0--------_— EX-0Is0 TSMI 14STORY 7- 4pz.4s Existing Industrial Building 1Existing5,§00 Sd FFET393.50 WM Asphalt Parking ` r= WM1 New Retaining Wall F 404` w/Handrail Max Height=8.5' lilt' FH A\ . \ Ex coNc —/�� (RETAINING WALL -------- Ww //✓i11iI/I(tI�t I\I I l�IIIIII I I I;I\\I I I I I}I I . I'I I 1'\ Tj II � \II=IaI1\ II I aOI` \I l I I IIInI II I�= I ITI 1 IIII IIIi\ o I0IaI ( I \ 1I I I I I\I I I \I\II I I�I\\ \\\I\ I\ I\ \ II \ \I\II IIII I I II\ \\ II I \11 \ I III I \I II \ I\ I\I\I \1\ \I I I I \\ I\III I \I I I\\ \\11\ \ II II1I1II I II II I II \11 I II\\ I\ I II III \\—I\ II \II I\I\ I II —\1 P\—1 I \ I\ \_\I\ — \\I\ I NI\ II \\ __— II\I\ I \I \\I \`\—\I\ \r\I� \I 1\I1 \I I I \ \I \\ I \ \I \ \\ \\II\/I \I I \\ I v \ I \\\\\IJ/yI \\I I \I �I \ \\\\\i\ \\ 1\\I\ \1\\ \ \\ \E\�\ \\\ \\\ \\ ( \ I \ \\ \\\\\\I\�\\ \.\/\\ I\ \\I \ I \ \\\�I\ I\\\\\\1 \ I\ \\ \ \\\\\\ \\\ °\\ . \ \\IP \\° 4 \y \\ \ \ �\��\\\\P1\`\ 1\\\ \\\��\\ 3. \ \�\ 8 \s\\U \ 3O .\.\\ :\ \ \(1_\5 \d\ \ \ \•\'\\ D \\\\/\\ \\\ 3\1\\ \8\4\". \\ \6\\ \ \ l .\ /\ _\ IP\ \•\ \ \ \ \\\ \ \\a� \\\\\\.\Ipo\\ \ tra \\\\ .\ \\\ .. .\\\° a\ \.\\\.\\\\° \\\\1 \ I\ _ \\\ \-\ \ S\\ —\' \l\\I \—a\ °\ \ \\\, \ \— \ \\ \ a \\\\..\ . \\ \°\ \. a\ / \\/\ .•\\ y /\\ /\a\�\%° e3� /-9/ / 0\— \—\./—/g_;./ /q /�\/ ' —//./ —'././ _/`/9— 0 —/ /_e\ —./n\' \1 / \\—/8•\ \— /— \ \/ /\\// i\ \ /\\ /'' \/ \/•\:./j/_\ \`.//s/. .0� /3.9/"/�/;� /////// \—/^—:—/e/ \\ -- --/ __ a/ --/\--_\_.— -- ---a // —�,—\ _--./ /•. / . \—. —a --,�—//�—a—/'/ — /' —a�/ I—p,-- a--/7o— _—/ n°/—;^ _—/ � — /_—/-- -- —Li-3— �\E_— —�T \ �—_ Mal�— —\ \\�0a_\ r \\ \\T\\1\ T \W---=\�4\�\— —0\ 3 .\1— \\ \ \a 6 PVC L=--40z 2-STOREX11,232 SF/FL 22,460 SIF GFE=388.00 FFE=398.00 ew etoining Wll C w/Handrail Max Height-15 moo— 70 \, \_ -\-- —\� —\ Existing —In—d—u— I s/— t 94 86 15"HDP— — — — — — — — — — — — — — — — CQ CQ 6ccaa O(W�o F �C`k � � > 1�WNew Retain ing Wal G 'w/Handrail & 1.5' Gutter or� vMax HeiV-7' e.F�fTORY 3 www6.10.SF37TBRY- .2" I3�W o 0 FFE85.00� 3,9L/ MIP lPs2s� 394.00 Z. ;I_ z GFE=381.00-9 New Retaining Wall N 0 0 LFE=371.00 w/Guardrail A!A— \ � 39 — — — _ __ Max Height=7.5CZ) ,c/� \/ New Retaining Wall M Max Height=2.5' $13 316 5Ss(u0� \ 21 , 7 Z � L=� New CG-: Channel) \ D Ip 2-STORY- T 15" HDPE / \ 2,125 SF L800 z� o \(4,250 s FF4-74.00 0 FOHDPE a t UFE-jj888b0� 2-STORY Z PU2--4 NeReainWeir Walls 2,640 SF/FL WW g w \/\H\a\nd\ r\ a\il (Refer to 1//C/-612/) Max Height=11' (5,2-8-0 `.S—;F•) .. -- _ • S \ \ FFE=377.20 8 UFE=387.20 Q 4516SEX D \ 1L1Q,QZxa waw UWx) 2-STO(9,032 SF� \ c� FFE=348.0 4T0 SF/FL \ 0 E FE=351.0CE"\New RetainingWall A IP ,UFE=370.5 L) w \ 2-STORYa' -- — — — -- 387�SF/L (7,748 SF) \FFE=354.50 ���-- —_ \ \ \\ __ ��= — SHEET No. UFE�2.50 \\ \ —— — — — — — — — — — ----- —360- C�505 IP REFER TO C-506 SHEET 6 of 20 REFER TO C-505 II \ \ \ Max Height=ll' \ \ \ — \ \ \ ' ' / — — \ \ \ \ 5,280 SF Jr GIN I A \\ \ \ \ \ \ \ \ \ \ \ STORY \ / / / / / / / a : \ _ \ \ \ \ a \ — — FFE=377.20 tf \ \ \ \ \ \ / / / L { 1 �•'.: 18 UFE=387.20 o �� \ \ \ \ o \ \ \ \ \ 4,516\SFy'FL / / / '�/ s : a \(9,032 SF� \ — — — — / / / / / 2-STOB'� \ \ \ \ \ \ \ \ \ \ \ \ FPE�48.0 — — — — — / 5 y` / / / "70 SF/FL — — \UFE=36": / / / / � (8140 SF) _ \ \ 0 \ \ � \ � 0 6 � � �= � � \ \ \ \ 3— — y�o FFE=351.9 — — — \ \ \ \ — /— — — \ 75` _ — — _ 1 "WM \ 8 �'p g �� \New Retaining Wall A P / / / / / Xt=370.5 \ \ \ \ _ HOPE — \ \ \ _ _ _ 0 �O 2-STORY 3,874SF/FL— \ / \ \ \ (7,748 SF) ---_ — _ \\ \-- — — — — — o z FFE=354.50 \ \ \ \ UFE=372.50 — — — — \ \ \ — — O / --------- 2—STORY ��o \ — z ¢ ro as w P \ \ 3,725SF/FL \ \ \ \ \ w Q � w w VCR \ (7,450 SF) \ \ \ U 0 FFE=356.0 VI \ P \ \ AD W�A \/ IP a /moo \ _--------- UFE=375.0 _ — ` a 3�0 d, / 0 a p c,+ — — _ ORD ,� R ^ 7� 8 e . e\S \ \ \ \ X��X / New Retaining Wall H N .--i _ — — iJ,� o \ \ E \ \ \ \ 7� w/Guardrail Q' 0 o SF \ \ \ \ L \ — / \ — — — \ 1"WM D 7 \ �' \ \ \ yl— — — Max Height=6' / a C`j � c� .4 o _ \ UC o��\ g \ \ \ �\ —�./ — --__ :> = 2-STORY \ \ �� A-'v�ca \ \\ \\\ \— _ \ \— _ /— 4 -- -- -- — _ U — 1,408-SF/FL-- Trh� W W / hp—et \� \ \\ \\ \ \ / S n --- 1 �— (2,8165���\ \l \ \ \ --__ / v�WE"w °nP \ --_ \ _ — _-- �_ FIFE = 360.00 \ \ \\ \ \ — Z * boo _ _ _ _ (91, /— — — — — -Flew Retaining Wall L 7,451 9FYL — — _ 6 P — — — _ BFE = 340.00 B/M \ y2� \ \ \. \ \ \ \ \ \ \ _ ~ 04 rx x \ \ ew Retaining Wall I \ \ \ �— � � a � \ w Guardrail — — — — — — Yl\ w/Handrail \ — — _ v a \\Rgcs I CD _ _-- _ -- / - _-- --- �4906 0 —_-- — y�EE c�\�J \\ \ \ ----- W SSF Max Height—T �lvlax Height=10' \ \ _ _ — �32 \ __�----- — --- FFE=349.35 \� \\ \ \\ \ \ \ \\ --__-- 42— — — — — — — — — — --- UE=_3a3�—__—__ --__ — � yl\EX \ \\ \\ \ \ Sso \\ \ CJ ohp LIQ hu�-- SF PVC �0• yly `� New Retaining Wall J HDPE�-ohP \= --- 6•, w/Handrail \\ \\ \\ \\ \ \ \ \\ \\\ \ \\\ // ////�( j Max Height=7' \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ ` — — J / _ ° CD .goo FeN��AIA/CINk\\ PUBLIC . CR'EIDTHE P � p O A \\\\ \----____ \ \ \\\ \\\\\\\ \\ \\ \\\ \\\ \\\ \ jj/— \ / \ DACCESSEASEAIE ---\ \ \\ \ \\ \\ \\ \\ \ \ \ \v \ B _ NT \ _ _ � --------------------- 0) �x---------- --- \' _T\ 0FEM�dPIoin W \INV=31946 ° \ / I /MCI—MH-04 — — — — _ _ N -- \ \ \ \ \ \ \ \ �'/ / / / / I / Top=327.10' _ _ 30" Inv. In=310.90 — — Clay (RwSA) MCI—MH-03 \ / / Rim=322.64' I I / Inv Out=310.80' I �— —_ Inv. In=310.36 Inv Out=310.26' r / / Forebay 314.5— \ OP 5,585 CF / Gabion B sa ket� — 314.5 / SB 1 Crest=318.5 \ \ !8 INV=319.06 / I / ` / 320.5j /'\ JO,C/o LE410 Emergency Spillwa J I lev: 319.00 / P \ SqJ I I ---- -20 \/-- i CA408 s��/f TER \ MANAGEM T BASIN \ SWM-1 \ 40 RC=319.220 — — \ 36" In . In 308.79 — — \ 30" In '=308.79 _--- _ 3 " nv Out=308.69' 42 � � 00 o — — — — — — — — — — / / // la I / \I II \\ \\ \\` I \ \ \\ \\A FHOVERLAY FLOODOODD HAZARD E TRICT V) z z w w �T \ \ \ \ \ \ rA / / / / / / / C) C) �TP'TP TP TP \ \y6"\ \ \\ \\ !A S / �� / /// / / / �/ o �\ rTP —TP DTP TP — LE402 \ DISTURBED A ER 6.57 ACRES\\TA� 11// PHASE 2 SEQUENCE OF CONSTRUCTION ,1. Install site improvements as shown on approved site plans. /\\\\\ \\ \\ \ \\ \ SF 2. Once site has been stabilized, contact county inspector to review a site conditions. 3. Once site inspector has approved stabilization is adequate remove / \ \\\ \\ \ \ �\ // / �j / l� f / / a z p ST-1 and convert SB-1 to SWM-1. / \ \\\\ \\ \\_— 41 0/ / / �/ / / / N a � O p LANDSCAPING NOTES: w 4. SLOPES GREATER THAN 3:1 SHALL HAVE REDTOP PANICGRASS \ \��\ \ \ roes �o// / \� /.'/ // Z a � (panicum rigidulum) AND WILD HYDRANGEA (hydrangea \\ , \\\� \ ,� �f� �/ / // Z \ \ \ Q / / / // // c) W J\// � arborescens) PLANTED 6 ON CENTER. x x LEGEND 40 \ \ / F a DB DEED BOOK � PG PAGE PRESERVED SLOPES PER GIS FH FIRE HYDRANT WV WATER VALVE MANAGED SLOPES PER GIS WM WATER METER 7 � FEE FINISHED FLOOR ELEVATION EXISTING TREES TO BE REMOVED UFE UPPER FINISHED FLOOR ELEVATION + + BSL BUILDING SETBACK LINE VARIABLE WIDTH FOREST AND PSL PARKING SETBACK LINE ® OPEN SPACE EASEMENT PP POWER POLE SCC STORMWATER CONVEYANCE CHANNEL WP WALL PACK 30' 0 30' 60, 90' ULD ULTIMATE LIMITS OF DISTURBANCE TP TREE PROTECTION FENCING SCALE: 1 "=30' HIM BLANKET MATTING FOS FOREST / OPEN SPACE SIGN LSWPP LEGEND PT PORTABLE TOILETS SCK SPILL CONTAINMENT KIT VWA VEHICLE WASHDOWN AREA VFS VEHICLE FUELING STATION CWA CONCRETE WASHDOWN AREA WDA WASTE DISPOSAL AREA TS TEMPORARY SEEDING DC DUST CONTROL F C a ~ E-E 0 w I OF SHEET NO. \ \\ C-506 SHEET 7 of 20 s \3 / ;i;!1 1 \ I \ a G �II / IN! II I / — — 'q° LEGEND A � \ DB DEED BOOK r \N � Ili'• 9. \ PG PAGE \ — ------ \ FH FIRE HYDRANT' J o� 0 20' 0 20' 4 ' \\60' \ ` \ /q°,� I \ --Z__ \ \ o 'I 114 I I / q°= EET , -- \ _-------- \ \ WV WATERVALVE x �' SCALE: 1"=20' a F I DRAY STR _- \ \ — — — — \- \ ---- \,WM WATER METER - J \ z p 5 /I'!% I O q' + p BRO ROUTE 1115 ) \ C / EX WM — �� l FE FINISHED FLOOR ELEVATION 2 I s �� \ ^ IC R/ 1 \ / uT _ _ L UFE UPPER FINISHED FLOOR ELEVATION PRESERVED SLOPES PER GIS > O N / q''' IPr� QIiL \ — — — / _ / ' \ / M it I I 5o (0 / _ / / / / _ �S—� / BSL BUILDING SETBACK LINE �)O g �OF� lir7 I / o \ \ / \ I _ �Cf ` m PSL PARKING SETBACK LINE 7 MA MANAGED SLOPES PER GIS �y� Q •' II lil!j I \ O / \ , y°''°/ / \ PCrrr / / / / UT / / _ x \ 1 / PP POWER POLE 0'C l' 1 uT S / — / _ / \ \O0 \ 1 / / SCC STORMWATER CONVEYANCE CHANNEL + + EXISTING TREES TO BE REMOVED filII !^ II // \ q I \ /N — T/ / / /' _ / — —� y WP WALL PACK ULD ULTIMATE LIMITS OF DISTURBANCE VARIABLE WIDTH FOREST AND OPEN SPACE EASEMENT 02 lRz I TP TREE PROTECTION FENCING � 0 ,B,M BLANKETMATTTNG o ,FQS FORET / OPEN SPACE SIGN < 9°5 — jlli,— �\ iii l o a ,- A�SA I \ fl — /' \ \\ \ \\390� I I \\ II z <1 w w WATER I / / / / /\ / / / / / / / / 9p5 % O A I ET I I o J' hil i'EJ OAD� AY gpSEMEN \ \ \ \I I w 56 PUBLIO� 675s 326 `�9 — 1 4 ew Retanin 9 Wall E /w/Handrail Max Hei ht=22' �X MH-3 !!!i1 r A I u9 / °o �'�.�! °o✓\/ ' —/�/ / \/ / / / / // // / //' (Rue/tl,W, fto2/C-61 j II \ ir lI Qo376 I I a o C\2o G—=—-- 1 /,.,r / / / / / / / �/ / F�� W co II!' WV III \. TP / / / / � � �I /NMI, If ,you �. Ifill I I \ \ \ �0U x Ihl I I / Nil I ;I I I I I (/ ( ew Retaining a D / 14 — — — 1 \ Z lijjl I 1:� I 1 \ D 1 1 I w/Guardrail c, I —Max Height=5' of —I I u L / I II I' Existing Indust w i!!i! L qp9 F !,!if PP B I \ 1 38A 2-STORY/ i I 3,000 SF/FL h liii!i z 6,000 SIF \---- II 1 s I I oo ii!I1 m l l0 I I I\ I 11 II I I I I I I I I I // FFE=394.0 1gii � iiiifi 4pXz4S Existing Industrial Building 14STOY 111 11 I / I \ I I I I 5,7 00 SO I I \ I I \ == Existing FFE1393.50WMI I I I I I \ I \ I I I I I I I \ I (�, Asphalt I I I Parking I I iIl!I i I 1 _ 1 1 1 I I I I \ 1' WMI \\\ I I New Retaining Wall F I I I \ I \ I 1 \ \ w/Handrail I[!Max Height=8.5 I!I 1 1 I \ \ \ \ `4p4 Ff I I n� I \ \ 1 I ' It'll 1 I I I I � 19r7 \ K. \ FH I \ \ R IIII o II I I I 1 I 11 I r I I :• / . .. , . . \ •: a. P \ II✓ _ \ \ / * , .. \ .. , • 1 rr M \ \ / * 1 I I II EX CONC \ \ RETAINING WALL 1 LA \ TW=403.1 \\ \ \ \ L 402\ \ \ 400 I \\ \ \ \ 2-STORM` — _ / IIII I II a I I I l \ \ \ \ 11,232 SF/FL \ EX 22 I \ I I l I l 1 \ \ \ \ 22,460 SIF /iiijl I l \ \ GFE=388.00 !y I \ \ \ \ \ \ \ \ \ FFE=398.00 \ \ 1 0 / I\ loll i I I I I I I I ew f�etaining all C 1i1� j I I I w/Handrail I 1 I\ \ \ \ \ \ \ \ \ i I I I Max Height-15' , \� \ \\ \ \ \ \ \ \ / \ / \ 'P ,. \400_ — _ — _ — _ 70 \ Existing Industr 394 \ \ —402 — — — — -- \ !II! I I I \ I I I l l a 1. •1 \ \\3816 I \\ \ \ •td \ \ \ \ _- \ I Ill if 5,r I I I 1 I l II!ii I I I I \ — — —---------- — — iil4l 3 \ \ /�CQ \\\0 \ o j I I I I \ ` • °' .'i ` •a' .•. a + ... • • ..a 390.--'—'. �, s' . • ,I � > 6 .pT . ,` .a .�' 1 \ \ / \ \ — — — — _ — jj I I o I cnI I 3e4 \\ \ _ � i\—�— I Ii I I I of l I I \ \ \ \ �\ \ 1 \ \\ Aso— — �\ \ ---/ // \ o l l I I \ \ \ \ \ \ \ \ \ \ \ I\ \ \ \ \ \ \ / — — _ — / \ ew Retaining Wall G \ F \ \ ,"/\ \ \ I _ 'w/Handrail & 1.5' Gutter \ \ P ill 11 11 I I I If I \ `�1�STORY \ \ \\ \ \\ \ \ \ \ �\ / / \ a /' / —� \ \ \\ — Max Height=7' \ — U w w I� I I \ \\ 61T0.SF\ \\ _—// //// 3 W z llI r z 1 l I \ — \ \ \ \ I \\ \�— // 3=STDR /--a \ \� \ \ a — + \ . — — Q � � a m \ z I G1=374b \ \ "r / �3,975 SF/FL / \ \ \ \ \ \ _ \ _ 0 0 ;!illl Il \N I \ \_--FFE��5.00 \ \\ \ 0 \\ \\\//_ �`_—_ / 41,925S� \/�— �// \ \\\I \ _\/ — — J \\\\ �e F I I \ \ \ \ / / ♦ 394.00 / / — — — / \ \ z z FE=381.00 / / if i \ \ \ \ \ \ 3g \ / / New Retaining Wall N' iI I I \ � \ \ \ \ 0 \ — — � l / LFE=371.00� / 9 _ ,w/Guardrail \ \ \ \ / /�� \ — — — —�_ \ \ _— —_ 39 iff. II \ \ \ \ \ \ \ \ I \ — / / — / / / Max Height-7.5' 'fill l �, \ \ \ ` — — \\ \ \\ \ \ \ �L \ \ \ / / \ / / — J / New Retaining Wall M— ! 16 I I 1 \ MaxHeight=2.5' \ \ \— fiiji — — SF/FL \ \ \ / \ ? \ \ \ 00 SF)-� illlli \ \ \ \ \ \ \ • \ \ \ \ \ \ \ \ / / / / / ^ _ \\ �\ 3 New CG-6 Channel) 2ilin 15" HDPE \\\ \ aE\ 2,125 SF FL � \ \ o a \\FE=374.00 I 1 \ \ \ \ \ • ,.-$88 00� E- 4 \ \ \ \ \ \ \ \ FOS , . _ _ / / / i :. \ \ \ \ \ �\ \ \ \ \ \ 1 2-STORY i/1 � L \ \ \ New etaining Wa \ / / Weir Walls \ \ \ ` \ \ \ \ O Q \ \ 2,640 SF/FL >� W ,� � 0 \ \ \ \ \ w/Handrail \ \ \ / / (Refer to 1/C-612) / �, — \ \ \ \ \ \ ax Height=ll' \ \ \ \ \ / / / / / /� !..: ' \ \ \ FFE=377.20 W O Z — \ \ — UFE=387.20 �\(9,032SF� `--- / / / /////STS \ \ \\ \\ p \ \ \\ \ \ \ \ \ \ \ \ FrE=Q48.D — / ya. / / O \ \ \ UFE=36&0 / ,140 SF)\ \ 6 E- J w fx \ \ \\\ \ \ / / FFE=351.0 ---��� \ 1 /�) �\ p \� — 1"W \ \ \ \ \ \ \ \ \ \ \ \ \ \\\ New Retaining Wall A / / / / ,UFE=370.5 \ �. \ \ \ \ _ \ \\ , — _ _ \ w > F Max Height=2' a — / / / \ \ 2-STORY — — _ _ — — — — — — O w ----\\ 3,874SF/FL _ \ �\ �_ 374— — ti w � a x (7,748 SF) — _ _ _ — — — a rn ° \ \ \ \ \\ \ \ \ '� n.� — ---- A v --' // ✓': r.... -- \\ FFE=354.50 \ _\ — SHEET NO. UFE=372.50 J60_, C111111111115 07 REFER TO C-508 SHEET 8 of 20 REFER TO C-507 _ _ .. \NIA \ i / WFL P44.0 , \ \ \ �' _ UFE=387.20 \� \ \ /0.5 BW878.0 J -2 2 \(9,032 SF)- _ / / / / , 2-STOP \ \ \ �' P7 3 `1 <,.. > o F'FE=W.0 --- / `: / / / "-fO SF/FL \UFE=36U: y // / , / 3�0\ \-------- / / / // y�oo FFE=351.0 ---- \ \\\ (4) �` 0 _ 6 1"W \ J� New Retaining Wall A TC 6.1 TC4�.2 / / / / ,JFE-370.5 \ \ \ \ 2-STORY Max Height=2' a _ / / / \ 3,874 SF FL (7,748 F)- s /� ✓': °.. \ \ �FFE=354.50- \ 8 UFE=372.50- Q'� C P 4 TC47.40 \36 \ 2-STORY \ o - \ - - - - - - - - \' - o w 0.r1 37450FFFL \ \ \ \ � \\� i z Q U z r� q fFE=356.0 \ \ \ \ t wo m w w _ _ \ \ AD UFE=375.0 \\ \ - _---- ' 370 s w � � 1 � \ C �- ' - - P �RD 8 .. y�66 \ \ \ \ X� 4 , New Retaining Wall H Z \ � _ULD UL _ _ - � _ � � P54 55 w ,S yl _ � � w/Guardrail a o yam_ - _ Max Height=6' !� p � o pq �Z�CO0 FX <O \ \\\--- / / \. ' S5_ 2-STORY \ Yl \TW610\\------�/ W co �\ 1, \lY� \ gy�/61.0 �Ua�¢_ -------- - --__ a-1;40>iSF/FL 3S\0-- \ - - 1 TW60.0 TW56.0 / U q FFE = 360.00 B1�/5�C>\ � \ �W�.O � WEww k\ g, 8•. 0hp - - - 2-STORY - - - - BFE=�40.00 \ \ T� * Fo z k\ �q T \ \ - - - _ - -Flew Retaining Wall L - TW47.-0 _ % \ ew Retaining Wall 1 \ C3 w 0 o eenIrv,�h \� FRq '- _ --- -o w/Guardrail-------_ 7,451 SF/FL BW40.0 -__ 0\ TW580 / _ _ w Handrail Z Spike°rk 1 g CSC - - _ - - _ 7 - Max Height=7' LFE 6 0 - - - - - - TW�.O F� GE \ �W lux Height=l0' ��� LQ. - ------ - FFE=349.35 _ _ \ \ - _ - d• - -------------DFE-359.3�-- TW40.0 \EX \\ \ \ \ \� Z �oP - --- ---- BW34.0 C - �\ TW40.0 \ \ \ x \ --- ULD - - - .• - - - PVC �Q yl New Retaining Wall J ��\\ \ --__ - ■ - - - -w/Handrail \ \ \ \ \ \ \ \ \ \ / / / / /�( 5 ULD _ - - - Max Height=7' \ 8 CNAI \ / MOORES04EXjANE IJLD eA/CF N GINk 9a `` PUBL CRIABLE WIDTH A DBCCESS EASEMENT _ - \ / _ / � ------------------- 7�zi-:w x_X ���------- ��p R FEMq Floodplaln / I \ _ o / o - - _ _------- \ o �� \ \ \ \INV= 19 46 /---______ i Map=327.100' - _ N 30" In=310.90 - - _ Clay (RWSA) _ _ MCI-MH-03 - Rim=322.64' r I i I Inv Out �1D.80= - _ _ I �- \ \ Inv. In=310.36 v t-310.26' No Forebay 314.5- \ \ O - - _ t ♦ / 5,585 CF / abion B sa ket� S� � 314.5 / Crest=318.5 6 INV= / ��O \ ' / / �\ -320.5/ - i\ \ O dvy \ ♦ LE410 i Elow merge cn y Spillwa /`��/ \ \ ��� \ \ �'I ULD lev: 319.00 D \ SqJ \ ------- ULD ` �' s, s JATER 408MANAGEMBASIN MCI -MH-02 Rim=319.20 /-- \ Inv. In 30.79' ---_ 31J Inv-in=308.79 /A, 30" Inv O t=308.69' _ 0 ' FH FLOOD HAZARD OHO \ l I / / // / i / o _ - - - - - - - - / / I \ \ OVERLAY DISTRICT / / / F z z \ \ (O / / / / w w w � � /-_CP�_ o 0 ~ DTP �T ! / LP-DTP TPTP-T�TPLE402 z c� i 46 41 0 \ %9 E- / \ e W O Z 40 Z LEGEND / , \ _ \ X/ \ �. / / I ` / [� z DB DEED BOOK PG PAGE ,d\ FH FIRE HYDRANT / / \ // \ / / E- a E- WV WATER VALVE j a WM WATER METER / / / \ / \ \ //// / \\\ / W > F FEE FINISHED FLOOR ELEVATION / 0 9 \ / / / UFE UPPER FINISHED FLOOR ELEVATION , o / 1 / a x �BSL BUILDING SETBACK LINE PRESERVED SLOPES PER GIS I �\ / \ \ \ \ \ / / / I / a4 PSL PARKING SETBACK LINE I \ T\ PP POWER POLE _ LE423 \ \ / / / I / SHEET N0. MANAGED SLOPES PER GIS I o - / -SCC STORMWATER CONVEYANCE CHANNEL � WP WALL PACK + + EXISTING TREES TO BE REMOVED 1 rn 20' 0 20' 40' 60' / /Clllllllllll508 ULD ULTIMATE LIMITS OF DISTURBANCE \ o \ \ TP TREE PROTECTION FENCING VARIABLE WIDTH FOREST AND OPEN SPACE EASEN"T 0 \ \ I I / �B/M BLANKET MATTING ® SCALE: 1"=20' FOS FOREST /QPENSPACE SIGN \ / � \ I 1 1 1 / r SHEET 9 of 20 EROSION & SEDIMENT CONTROL NOTES Y ALBEMARLE COUNTY ENGINEERING EROSION MAINTENANCE SCHEDULE GENERAL CONSTRUCTION NOTES FOR EROSION & SEDIMENT CONTROL ES-1: Unless otherwise indicated, all vegetative and structural erosion and sediment control practices will be constructed and maintained according to the P 9 1. The plan approving authority must be notified one week prior to the pre -construction conference, one 1.The Site Superintendent or his representative shall make a visual inspection minimum standards and specifications of the Virginia Erosions and Sediment week prior to the commencement of land disturbing activity, and one week prior to the final of all erosion and sediment controls on a daily basis until the site is Control Handbook and Virginia regulations VR 625-02-00 9 inspection. stabilized and especially after a heavy rainfall to assure that all controls are P Y Y 2. All erosion and sediment control measures will be constructed and maintained accordingto minimum in and that none have been damaged. Any damaged control shall be ES-2: The plan approving authority must be notified one week prior to the standards and specifications of the Virginia Erosion and Sediment control Handbook anVirginia place pre -construction conference, one week prior to the commencement of land Regulations VR 625-02-22 Erosion and Sediment Control Regulations. repaired prior to the end of each workday to include re -seeding if necessary. disturbing activity, and one week prior to final inspection. 3. All erosion and sediment control measures are to be placed prior to or as the first step in clearing. 4. A co of the approved erosion and sediment control plans shall be maintained on the site at all PY PP P 2. All silt trapping devices shall be cleaned out at 50 percent capacity and ES-3: All erosions and sediment control measures are to be placed prior to or 5. times. Prior to commencing land disturbing activities in areas other than indicated on these (including, sediment shall be disposed of by spreading on site or hauling away if not as a first step in the clearing. plans but not limits to, off -site borrow or waste areas), the contractor shall submit a supplementary suitable for fill. ES-4: A copy of the approved erosion and sediment control plan shall be erosion control plan to the owner for review and approval by the plan approving authority. maintained on the site at all times. 6. The contractor is responsible for installation of any additional erosion control measures necessary to 3. Gravel outlets shall be checked regularly for sediment buildup that may 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 duringland prevent drainage. Controls shall be inspected and repaired after each rainfall P g P p ES-5: Prior to commencing land disturbing activities in areas other than disturbingactivities and during site development until final stabilization is achieved. 9 P and cleaned if sediment has accumulated to half of the devices original indicated on these plans (including but not limited to, off -site barrow or waste 8. During dewatering operation water will be pumped into an approved filtering device. height. areas) the contractor shall submit a supplementary erosion control plan to the 9. The contractor shall inspect all erosion control measures periodically and after each runoff -producing owner for review and approval by the plan approving authority. rainfall event. Any necessary repairs or cleanup to maintain the effectiveness of the erosion control devices shall be made immediately. 4. All earthen structures such as diversion dikes and berms shall be checked ES-6: The contractor is responsible for installation of any additional erosion 10. All fill material to be taken from an approved, designated borrow area. daily during construction for breaching by equipment. Repairs shall be made control measures as necessary to prevent erosion and sedimentation as 11. All waste material shall be taken to an approved waste area. Earth fill shall be inert materials only, free immediately. Y• of roots, stumps, wood, rubbish, and other debris. determined by the plan approving authority. 12. Borrow or waste areas are to be reclaimed within 7 days of completion per zoning Ordinance Section 5.1.28. 5. Silt fences shall be checked after each rainstorm to assure they have not ES-7: All disturbed areas are to drain to approved sediment control measures 13. All inert materials shall be transported in compliance with Section 13-301 of the code of Albemarle. fallen or become clogged with silt. All repairs shall be made immediately. at all times during land disturbing activities and during site development until 14. borrow, fill or waste activity involving industrial -type power equipment shall be limited to the hours final stabilization is achieved. of 7:OOAM to 9:OOPM. 15. Borrow, fill or waste activityshall be conducted in a safe manner that maintains lateral support, or PP , 6.All seeded areas shall be inspected regularly to see that good stand is ES-8: Duringdewaterin operations, water will be pumped into an approved 9 P P P PP order to minimize any hazard to persons, physical damage to adjacent land and improvements, and maintained. Areas will be re -fertilized and re -seeded as necessary. filtering device. 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 F ili wh r applicable) n II erosioncontrol m r r it this n Facilities (where e apt, cab e) d a e os o required by t spa 7. After construction operations have ended and disturbed areas have been p ES-9: The contractor shall inspect all erosion control measures periodically and tmeasures al regardless of the sale of any lot, unit, building or portion of the property. u stabilized, all berms and sediment -trapping devices may be removed after after each runoff -producing rainfall event. Any necessary repairs or cleanup to 17. Temporary stabilization shall be temporary seeding and mulching. Seeding is to be at 75 Ibs/acre, removal, the shall be restored to Its natural or condition to maintain the effectiveness of the erosion control devices shall be made and in the months of September to February to consist of a 50/50 mix of annual ryegrass and ground proposed immediately. cereal winter rye, or in March and April to consist of annual Rye, or May through August to consist include establishment of permanent vegetation. Removal of any control is of German Millet. Straw mulch is to be applied at 80lbs/100SF. Alternatives are subject to approved contingent upon approval of the County Inspector. Erosion Notes: by the County Erosion Control Inspector. 1) All Entrances except the approved construction entrance shall be blocked in 18. Permanent Stabilization shall be lime and fertilizer, permanent seeding, and mulch. Agricultural grade such a manner as to not allow access to the site. limestone shall be applied at 90lbs/1000sf, incorporated into the top 4-6 inches of soil. Fertilizer / ,�;; // ,m ______ ------ shall be applied at 1000lbs/acre and consist of a 10-20-10 nutrient mix. Permanent seeding shall /,%::% %;%/ /;; A' _-- •:�^ �" I - ------- I ` 2) The developer shall reserve the right to install, maintain, remove and/or be applied at 180 Ibs acre and consist of 95% Kentucky31 or tall fescue and 0-5% perennial convert to permanent structure all erosion and sediment control measures ryegrass or Kentucky bluegrass. Straw mulch is to be applied at 801bs/100sf. Alternatives are subject required by this plan regardless of the sale of any lot. to approved by the County Erosion Control Inspector. 19. Maintenance: all measures are to be inspected weekly and after each rainfall. Any damage or 3) A video camera inspection is required for all storm sewers and culverts that clogging to structural measures is to be repaired immediately. Silt Traps are to be cleaned when 50% are deemed inaccessible to VDOT inspections and are to be accepted into of the wet storage volume is filled with sediment. All seeded areas are to be re -seeded when necessaryto achieve a good stand of gross. Silt fence and diversion dykes which are collecting 9 9 Y 9 - - VDOT's maintenance and program and ownership. The video inspection shall be sediment to half their height must be cleaned and repaired. 1 • :i"�',9 /I �' -, N'/ � ,;,;;;%=� ,-,, -��S '% conducted in accordance with VDOT's video inspection procedure and with a 20. All temporary erosion and sediment control measures are to be removed within 30 days of final site ;; ;;;;; VDOT and/or county inspector present. In addition, if high -density polyethylene stabilization, when measures are no longer needed, subject to approval by the County Erosion; - , , !'1 rtl{.{G':,p� (HOPE) pipe or pipe system, the contractor and a representative from the pipe 21. Inspector. This plan shall be void if the Owner does not obtain a permit within 1 year of the date of approval. ,% _ I I manufacturer should hold a pre -construction meeting for installation. (Water Protection Ordinance Section 17-204G) �/,' P ' C i � I � I 1 I 1 1 1 I I 1 22. Permanent vegetation shall be installed on all denuded areas within nine (9) months after the date ° , a , I', II I', the land disturbing activity commenced. (Water Protection Ordinance Section 17-207B) op/ :;' '' _ \a ', I, 1 ; I ', I I I ; SEDIMENT BASIN 25-YEAR HYDROGRAPH 25-YEAR ROUTED HYDROGRAPH- %'% Hydrograph type Storm frequency Time interval Drainage area Basin Slope Tc method Total precip. Storm duration = SCS Runoff = 25 yrs = 2 min = 9.000 ac = 0.0 % = User = 6.81 in = 24 hrs Peak discharge Time to peak Hyd. volume Curve number Hydraulic length Time of conc. (Tc) Distribution Shape factor = 48.91 cfs = 12.07 hrs = 154,803 cuft = 82 = 0 ft = 19.00 min = Type II = 484 Q (s) 50.00 DA-M Hyd. No. 6 -- 25 Year Q (cfs) 50.00 40.00 40.00 30.00 30.00 20.00 20.00 10.00 10.00 0.00 0.00 0 2 4 6 8 10 12 14 16 18 20 22 24 26 - Hyd No. 6 Time (hrs) NOTES: 1. Trash Rack must be installed at the time of installation of the Concrete Riser Structure. 25-YR W.S.E. = 319.50 0 Crest Flev = .11880 Dewatering Device 6" Perforated PVC Dry Volume Elevation= 317.15' Wet Volume 6" Non -Perforated PVC Sediment Cleanout Point = 315.60 Storage = 4,642 SF Hydrograph type Storm frequency Time interval Inflow hyd. No. Reservoir name = Reservoir = 25 yrs = 2 min = 4 - DA-M = Sed Basin Peak discharge Time to peak Hyd. volume Max. Elevation Max. Storage = 48.07 cfs = 12.10 hrs = 138,263 cuft = 319.50 ft = 41,365 cuft Storage Indication method used. Wet pond routing start elevation = 317.10 ft. Sed Basin Route Q (cfs) Hyd. No. 7 - 25 Year Q (Cft) 50.00 50.00 40.00 40.00 30.00 30.00 20.00 20.00 10.00 10.00 0.00 0.00 0 2 4 6 8 10 12 14 16 18 20 22 24 26 - Hyd No. 7 - Hyd No. 4 ® Total storage used = 41,365 cult Time (hrs) Sediment Clean Out Volume = 18,571 CF / 4 = 4,643 CF Since the Sediment Basin is located within a 100-YR floodplain the sediment clean out volume is half of what is required in order to minimize sediment that could be removed from basin during a 100-YR flood event. Temporary corrugated metal anti -vortex device Temporary 6" concrete riser for Sediment Basin. Remove when SB-1 is converted to SWM-1 4' Diameter Concrete Riser 5' Dias TEMPORARY SEDIMENT BASIN (SB) Elev = 320.50 r--- Existing Grade Emergency Spillway Elev = 319.00 Width = 20' REFER TO 6/C-612 FOR OUTFALL PROFILE 110.8' - 18"HDPE ® 0.50% . Drainage Dry Vol. Wet Vol. Area Provided Provided 9 16,595 16,755 Dry Vol. Wet Vol. Required Required 16,281 16,281 Elev (ft) Storage (CF) 318.8 35,121 Dry Volume = 16,595 318 26,459 317.15 17,257 Wet Volume = 316 9,810 16,755 314.5 0 Total Storage = 33,350 - Wet Volume=16,755 Dry Volume=16,595 PERMANENT & TEMPORARY STABILIZATION Permanent seedingshall be applied within seven 7 days after PP ( ) Y 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: Kentucky 31 Fescue - 128 Ibs/acre; Annual Rye - 20 Ibs/acre. 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. November 1 through February15: Kentucky 31 Fescue - 128 Ibs/acre; Winter Rye - 20 Ibs/acre. MULCHING SPECIFICATIONS: Straw or hay at a rate of 2 tons/acre. Must be anchored. Spread with mulch blower or by hand. _-_--_- -- - \ L11 A / it I fpf" Existing Industrial BuildingExistin, \ AVhalg S Parting - - PWng ----- I$ ---� --------- --- 1 \ Distinct Industrial Wilding it III II `\`I`,ilil iii i i I':., `,13861 �` • ___ -- - - - - - - - - - - - ,y ■ I ' . I� II II Ill i l� I I \` `\\ \ \ -��O \ _ _yam _ `� \ - - -- - - l n ��- ' 1 II I II I I I I \\ \\ \ I `\\ .• ..o.,\'. _ .:;y+.r.: - ;. ...�, , > -: +::< ''1- -- __ i 3O� \\ `'------------------- DA-SEDIMENT'= \`\ i 80 BASIN --- -- -' ---- _-_ _ - y ---------- -- a ; - - - ---' ---- - - --- - - - - - - - - - - - - - - - - - - - - ssa, tana'Ina„ AN I ------------- -- `\`. \ \ ```� x/''vri"'� /' / / / /'' �/'/ %/ % / • i/I(I t ,- - .a - - \ � �. `� \ wow^ ,�\ � \ -� y V� ' I 'l ____`__-X .; LE410•.I 20a F' ----- --- _r /' / � I ,ram`, \`\\\\\`\'\ .\ `` \ ` \ i ` �Wr x.wm l i SEDIMENT BASIN DRAINAGE AREA 60' 0 SCALE: 1" = 60' SCALE: 1 "=60 / 60' 120' 180, SEDIMENT BASINS 0 Wet Storage Dry Storage E Baffle Barrel � O Q U >1 >' L U O p U +' cn -o .-. 0 ° -o .� °� -0 r. 0 0 .� E O o O .- E •� U O L •� N O C O 0 o .- L N o U o - -C �� �+ c - c 0 0 L 0 -o E. T o -o E T o -o E. T 0 -0 E T O J� 0 0 - o,a �' > O a�,o 0 +J 0 3� U)_ O o i '> `�- O ,� -6 a O 0� +' O E a; N l77 O\ U �_ > 7 �_ > > U s` > U > 6 L .Q) U E U O N J� p N J U Q + U m 6 0 -� o o 0 0 0 6 0 0 0 0 0 0 N mw N N mw U m w 3 0 0 o N w Q N E(nw U o N 0-w Q o' a m° Q om 0 E 0 0 > L 0 O U o U o U o U o o v o o r1 Ld Q o O J Q Q > .� `. 1 9.09 603 620 603 615 314.50 318.80 4.00 317.15 6" 319.50 319.00 4.5' 320.50 20 6.2 NA NA 110.80 18" 314.50 312.00 NIA �41, J Z (J Z AL A 'Y ' O W 0.0 0 H V O� P � tv 0 z `\2 0 x CIO x 0 z E- ara ai w O Q z w w Q CZ.7 CO U x W Ca U Z Z a �a o C\2o * rn w Z5c�io - r-� O U 0~CO� P� I PEI co >Pa�z Uri ID fx W F W w W O x Z P. �4 Z W z 0 E- P. o z z w Q 0 0 z z 0 0 U U z CQ o a a E- W E-� a- -- _y W Z W Q E� O W O Z Z O E,- U1 .4 F W E- ti o w w a a. x rn SHEET NO. C-601 SHEET 10 of 20 /ram/ ss 4fo' qr er AcsA �BT1� s 5ACCq-�26P SBV65YT / `/��� I \ \\ \ '� , \ \ � I I wV ____ ____ ------------------------ o gppAY ST ___--__---- \�-=361.3= ��----------- � \ -1'- o /00.`ol;T 380 o ----- - - - - - - - - - - - 2 _ J - - __- I\l--------------- ____V--- ----------__ _ - — - — 3qD ---------- --------- \ DA-SEDIMENT TRAP l l l I I It l I l I l l I \\ �I 0IIIII11 \0,'''' /// \\ // (\ AN iIII \\\ i �I III II �2As 1 \\ \\ \\ I I\\ I \ I I II \ \\ Fk/sl% og //7a� 1 SEDIMENT TRAP DRAINAGE AREA 30' 0 30' 60' 90' —60 SCALE: 1" = 30' SCALE: 1"=30' Stone 70' Min Construction 3" SM-2A Asphalt Access 2% Slooe— 2% Slope Existing L6" 21A Aggregate Base Filter Cloth Grade SECTION B—B Existing B A Pavement - 2% Slope 2'* Min Stone Positive Drainage *Must extend full Construction A To Sediment width of ingress Access Trapping Device and egress operation 12' Min Positive Drainage ' To Sediment 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: NITS �10"� AREA NOT 7 TO BE 12" DISTURBED 2"X4" POST WEIR DRAINAGE WET Al DRY A2 NO. A B C X W D1 Al (I I A2 (I LENGTH AREA VOL. (Prov) VOL. (Prov) 1 361.3 365.3 367.0 3 3 6 0.4 742 4.0 218 318 742 1.7 654 656 WFIP I FNIr:TH **COARSE \ AGGREGATE FILTER CLOTH \� EXCAVATED / AREA OUTLET (PERSPECTIVE VIEW) Dry Volume D2 ORIGINAL EL = B "Area 1" GROUND ELEVATION Wet Volume D1 EL = A CROSS SECTION OF OUTLET 2 SEDIMENT TRAP DETAIL (ST) —60 SCALE: nts ANCHOR SLOT NOTES APPROXIMATELY PER 100 SQ. 200 STAPLES REQUIRED YDS. OF MATERIAL ROLL. ANCHOR SLOTS, JUNCTIN SLOTS & CHECK SLOTS TO BE BURIED 6" TO 12" 12" MAX. 4:1 OR FLATTER JUNCTION SLOT 6" MAX. STEEPER THAN 4: 1 *CHECK SLOT EDGE AND END JOINTS I I TO BE SNUGLY ABUTTED TERMINAL FOLD (JUTE MESH WILL HAVE LAP JOINT 2" MIN. STAPLED LAP JOINT INTAMP I I (JUT MESH ONLY) LIEU OF EDGE JOINT.) FIRMLY ANCHOR SLOT 5' MAX. 4:1 OR FLATTER j 3' MAX. STEEPER THAN 4: I} 6" TO 12" I I I I I I I I I I FIRMLTAMY *CHECK SLOT 6" TO 12" *CHECK SLOT I 11 TO 2" I I I 1 I 1 1 VAR. VAR. 6" TO 8" MIN PLAN VIEW STAPLING DIAGRAM *CHECK SLOTS AT MIN. STAPLE FORMED FROM ON. 11 STEEL WIRE. 50' C—C INTERVALS; NOT 8' STAPLE MIN. LENGTH FOR SANDY SOIL. REQ'D WITH ALL 6" STAPLE MIN. LENGTH FOR OTHER SOIL. "COMBINATION" BLANKETS JUNCTION SLOT TAMP �— FIRMLY 12 2" T 6" TO 12" T I SOIL STABILIZATION BLANKET SCALE: NITS -TERMINAL — 4 TAMP FIRMLY 1 2" T FILTER CLOTH **COARSE AGGREGATE DIVERSION DIKE ITE SHALL BE 7, OR #5. GROUND ELEVATION SILT FENCE DROP INLET PROTECTION STD. & SPEC. 3.07 - VA. EROSION AND SEDIMENT CONTROL HANDBOOK (1992) ELEVATION OF STAKE AND FRAME DROP INLET FABRIC ORIENTATION FILTERED GATHER EXCESS AT CORNERST BURIED 2 x 4 WOOD FABRIC TFRAME //\\ CLASS I RIPRAP MIN. \ \ 3 MIN. \ SPECIFIC APPLICATION THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE THE INLET DRAINS A RELATIVELY FLAT AREA (SLOPES NO GREATER THAN 5%) WHERE INLET SHEET OR OVERLAND FLOWS (NOT EXCEEDING I US ARE TYPICAL. THE METHOD SHALL NOT APPLY TO INLETS RECEIVING CONCENTRATED FLOWS, SUCH AS IN STREET OR HIGHWAY MEDIANS. SILT FENCE STD. 8 SPEC. 3.05 - VA. EROSION AND SEDIMENT CONTROL HANDBOOK (1992) NO WIRE BACKING WITH WIRE BACKING 6' MAX �10' MAX 3 WIRE 16° - 3 r--� MESH PROVIDE I' TUCK OR SUITABLY REINFORCED TOP END SECTION EMBED 8' OF FILTER CLOTH IN TRENCH TO ANCHOR BOTTOM OF CLOTH. COMPACT THOROUGHLY 7 SILT FENCE SF —6--OY SCALE: NITS �411 PROVIDE I' TUCK OR SUITABLY REINFORCED TOP END SECTION INLET PROTECTION DETAIL SCALE: nts WIRE ., LL „ ,L,. L,L L K WIRE SCREEN RUNOFF WATER FILTERED WATER WITH SEDIMENTOVERFLOW t�ev SEDIMENT 2" x 4" / WOOD STUD CURB INLET SPECIFIC APPLICATION THIS METHOD OF INLET PROTECTION IS APPLICABLE AT CURB INLETS WHERE AN OVERFLOW CAPABILITY IS NECESSARY TO PREVENT EXCESSIVE PONDING IN FRONT OF THE STRUCTURE. *GRAVEL SHALL BE VDOT #3, #357, OR #5 COARSE AGGREGATE. CURB INLET PROTECTION DETAIL (IP) SCALE: nts Compacted Soil 18" MIN Flow 4.5' MIN TEMPORARY DIVERSION DIKE (DD) SCALE: NITS SECTION A —A FILTER APRON LINING SHALL BE 0% d 50 = 6„ a 12" T KEY IN 6"-9"; RECOMMENDED FOR ENTIRE PERIMETER 10-YR Do W dsD Structure Flow (ft) (ft) (ft) (in) (cFs) STR-1 28.68 18 2 12 6 STR-31 5.93 13 1.25 11.25 6 STR-40 27.3 33 1.5 11.5 6 PIPE OUTLET TO LOW LF" FILTER CLOTH 3 FLAT AREA WITH (OPTIONAL) NO DEFINED CHANNEL EMBEDFILTER CLOTH IN PLAN VIEW TRENCH TO ANCHOR BOTTOM OF (DOWNSTREAM VIEW) CLOTH. COMPACT THOROUGHLY Im MESH SHALL BE A MINIMUM OF 14 GUAGE AND SHALL HAVE A MAXIMUM MESH SPACING OF 6'. VDOT #1 GQAocr AnnornATU VLMJJ I I\IFI\MF ROCK CHECK DAM DETAIL (CD) SCALE: NITS 10 OUTLET PROTECTION OP —60 SCALE: NITS Source: USDA-SCS Plate 3.18-3 ��\NIA JN 1- L3 �20�dV O 7,2 z O r) x 0) d �21 E- U z E- p� W PQ O n M z w z w Q U Q U z U z �a0 0 ICU W %I- E--I CC 2 N I--� --�Z C\a 0 O CJ � Ca �Wy >U I z rFC �1....JJ Xi a~�A_ U �1� V) "I LJ WFW Zw00 ZPx U WW 't r� Z az W z 0 E p. U z z w w W �24 Ca � 0 0 E- z z 0 0 U U zC\2 CD w � as EI W Q W �D W O Q � � O as E- a U > 11 F/OS SIGN —60 SCALE: NITS SHEET NO. C-602 SHEET 11 of 20 410 405 400 395 390 385 380 375 370 r WM � • �r �� � 'fi�Ii1'1�7 _-_mod■ �_�_ • _-1�_- �d�� �I�Idd 1>,■dl Diu �!� d■dl -0+25 0+00 1+00 1 STORM PROFILE C-610 HORIZONTAL SCALE: 1"=30' VERTICAL SCALE: 1"=10' 410 405 400 395 390 385 380 375 370 365 360 355 350 2+00 -410 - 405 - 400 -395 -390 -385 -380 -375 370 2+75 350 345 340 335 330 325 320 315 310 -- 1 � - �_Illllfi � �iTl�di:illd dill ��1111■��� dam •• ��II��d\�■I�dd �■1 w=a�w�.viii��•wn�� -III l�11 -0+25 0+00 1+00 2 STORM PROFILE C-610 HORIZONTAL SCALE: 1"=30' VERTICAL SCALE: 1"=10' 350 Str-O6: VDOT MH-1, IS-1 Str-06A: VDOT DI-7 4+30.5 0+36.3 RIM: 353.81 RIM: 353.00 INV OUT: 348.13 INV OUT: 348.50 345 INV IN: 349.30 INV IN: 348.23 365 365 340 360 360 335 355 355 330 350 350 325 3% 07 0 345 345 320 340 340 315 -0+25 0+00 0+50 3 STORM PROFILE 310 C-610 HORIZONTAL SCALE: 1"=30' 2+00 3+00 VERTICAL SCALE: 1"=10' -�i ialY.1-111:I L•11PP/_1:1 �■- �i' -_ mv.�a..w.zwwwww� �.iie•1n■9:D]■�I:�■ �d-�IY1711' � 1 �■ " -�.�3,���%/add- �- �d��Il11r 00001-0 �d���•tra[��III/I■IID � 1���!C�% � ��� ITc'�- mis add■-� . . - -_l ddd�-I■_/��� add■-� _ 8 drn7i�!■%�i� . ddlF//� �dd'��I I:� d�lr %� iYiQl:�li.Sib71■:U]�■"c . 1 : �dd�\/ II■ _ dl %� �d� III 1■ �'� ar•S-- �d■11-17 1■� I>>'�.rTT't�isall�-� �d I/ld��l■ -- _ �!■il�i■d■■tiddfiki7� : `• : d�YI1dIs1F:t�.7ib1I■:u • � �d ■ 1`Idi� -1 1• • . .1• � 11'. �1 - �1 �1 -0+25 0+00 1+00 6 STORM PROFILE C-610 HORIZONTAL SCALE: 1"=30' VERTICAL SCALE: 1"=10' 395 390 385 380 375 370 365 360 355 350 345 2+00 3+00 ��•IialI:11■:Iy:1:P1G11■ • �d ` d�7�isid �d �6��1 �d I �I�dldi�l �d / �� `1 ilt.�•i�l�l �d-Ill 111�1-d■11-�1�-I .. . �d il- �d 11111- �d i- �d d- �1■ d- �1■d- �1■dl- �1 r� �1 �1 �1 -0+25 0+00 9 STORM PROFILE C-610 HORIZONTAL SCALE: 1"=30' VERTICAL SCALE: 1"=10' Str-11: VDOT MH-1, IS-1 2+69.2 RIM: 383.71 390 385 380 375 114 370 365 -0+25 0+00 10 STORM PROFILE C-610 HORIZONTAL SCALE: 1"=30' VERTICAL SCALE: 1"=10' 1+00 Str-13: TRENCH DRAIN 390 385 380 375 370 365 1+00 2+00 Str-16: VDOT DI-2A, IS-1 0+45.4 RIM: 369.67 INV IN: 364.10 INV OUT: 364.00 INV IN: 364.11 380 375 370 \ 365 360 -0+25 0+00 11 STORM PROFILE C-610 HORIZONTAL SCALE: 1"=30' VERTICAL SCALE: 1"=10' 3+00 Str-17: TRENCH DRAIN 0+38.7 RIM: 367.28 INV OUT: 364.69 380 375 370 365 ® 1.50% 360 0+75 395 390 385 380 375 370 365 360 355 350 345 3+50 4+00 5+00 360 355 350 345 340 335 330 325 320 315 310 -0- •• mania .)U bUniLury hewer win require u test pit for actual depth. Adjust storm sewer as necessary to provide a minimum separation of 1.5' 12 STORM PROFILE C-610 HORIZONTAL SCALE: 1"=30' VERTICAL SCALE: 1"=10' 7+00 410 405 400 395 390 385 380 375 370 365 360 355 350 7+50 Str-32: VDOT MH-1 380 380 375 .. 375 M M � 370 \\ 370 365 365 128-9.6'of15' 360 360 -0+15 0+00 0+50 4 STORM PROFILE C-610 HORIZONTAL SCALE: 1"=30' VERTICAL SCALE: 1"=10' Str-31: VDOT ES-1 -0+00.1 INV IN: 365.81 i = O � O O Q 380 375 370 365 360 400 395 390 385 380 375 370 365 400 395 390 385 380 375 370 365 -0+15 0+00 0+60 5 STORM PROFILE C-610 HORIZONTAL SCALE: 1"=30' VERTICAL SCALE: 1"=10' Str-35: VDOT ES-1 1 +02.3 INV OUT: 372.11 dd� dlcrr?IYI�d•� � dd�d _ �I■aii�� � ddld �E�l�l � ■IIIR:0 0- u�-I ��:■lII �I�dl � d�.�►1y17�1 � _�_Idddl - - - �lAi�l•�I�a -0+25 0+00 7 STORM PROFILE C-610 HORIZONTAL SCALE: 1"=30' VERTICAL SCALE: 1"=10' 380 375 - - - -RIM: 347.95 INV IN: 341.89 370 i 365 i 360 i 355 Ir 350 345 E 340 6 335 -0+25 0+00 1+00 8 STORM PROFILE C-610 HORIZONTAL SCALE: 1"=30' VERTICAL SCALE: 1"=10' 1+00 380 375 370 365 360 355 350 345 340 335 1+50 360 355 350 345 340 335 330 325 320 315 310 SO coed use of precast structures. ember dimensions (length and width, or diameter) are less than 4 feet, the safety slabs shall not be installed. -380 -375 -370 -365 360 1+75 0(,Y0 o z W .r O o ox �' x M a F O E- P7 W W z ca z w w o a 0 U Q � x W U Ll iJ � Z �z �a�o PQ � N O 8 >lw �W co W >UaMz �Q Wzi W F W � W O 0 Z44 r� Z Z w w E-E Q z 0 EE a a rn w w w q CD 0 0 F z z 0 0 U U z 24 O � Qi WO Q W �D a WOQ fx O O i!1 E- E� a > a E-E U E-' o F w aJIM SHEET NO. C-610 SHEET 12 of 20 M J J a 3 ELEV=368.5 CONCRETE SIDEWALK STR-8 J J 3 K. Ld � 1 STR-8A 3 ELEV=357.04" CONCRETE SLAB a ELEV=361.5 - 4" VDOT 21A ELEV=350.5 _ 4" CONCRETE SLAB ELEV=355.0 =' 4" VDOT 21A 4" CONCRETE SLAB 5 ELEV=348.5 4" VDOT 21 A /4 CONCRETE CHANNEL TO STR-05A SECTION VIEW NTS WEIR WALLS DETAIL C-612 SCALE: NTS PLATE 10-YR WSE = 369.57 STEEL ANGLE PLATE 1-YR WSE = 366.20 i i Diameter Orifice INV = 366.00 ELEVATION VIEW NTS SWM-2 Stage Storage & Discharge Report Elevation Storage (CF) Orifice (cfs) Riser Crest (cfs) 366.00 0 0 0 367.00 4943 0.66 0 368.00 11534 1.01 0 369.00 19846 1.05 3.52 369.50 29951 1.10 4.70 PLAN VIEW AN = 3.5'- SECTION VIEW 2 SWM-2 OUTLET STRUCTURE DETAIL !12 )SCALE: NTS 32) N N 0 u7 ELEV=363.5 ELEV=362 0 _\\ ELEV=361.5 ELEV=357.0 ELEV=355.5 _\ ELEV=355.0 ELEV=350.5 ELEV=349.0 _\ ELEV=348.5 LD-229Storm Drain Design Computations (10 Year Event) Pipe ID From Point To Point Catchment Area Runoff Coeff Incr CxA Accum CxA Total Tc Total Int Total Flow Up Invert Down Invert Pipe Length Invert Slope Pipe Dia Pipe Capacity Velocity Flow Time Inc (ac) (C) (min) (in/hr) (cfs) (ft) (ft) (ft) M (in) (cfs) IWO (min) 130 35 34 1.16 0.86 1.00 1.00 5.00 6.62 6.62 372.60 370.00 28.0 9.28 15 17.05 13.00 0.09 128 33 32 0.21 0.72 0.15 0.15 5.00 6.62 0.99 364.16 364.00 11.7 1.36 15 6.54 0.82 0.24 126 30 1 29 1 1.08 1 0.24 1 0.26 1 0.26 1 7.10 1 6.04 1 1.57 1 334.00 1 331.50 1 43.4 1 5.52 1 15 1 13.15 1 2.79 1 0.59 125 29 28 0.29 0.80 0.23 0.49 7.70 1 5.90 2.90 331.40 1 325.80 18.3 7.02 15 8.73 6.39 1.60 123 EX-23 EX-22 0.76 0.72 0.55 0.55 5.00 6.62 3.64 394.97 393.72 14.9 0.84 15 5.13 4.53 0.84 122 EX-22 21 0.00 0.00 0.00 0.55 5.80 6.37 3.50 393.62 376.60 156.4 10.61 15 18.23 5.50 0.93 121 21 20 0.00 0.00 0.00 0.55 6.80 6.12 3.37 376.50 373.43 46.8 6.04 15 13.75 5.36 0.30 120 20 19 0.00 0.80 0.00 0.55 7.10 6.05 3.33 373.33 370.00 33.7 9.18 15 16.95 3.83 0.21 119 19 18 0.43 0.86 0.37 0.92 7.30 5.99 5.51 369.90 364.98 121.3 4.01 15 11.21 4.60 0.44 118 18 16 0.09 0.86 0.08 1.00 7.70 5.89 5.87 364.88 364.10 149.2 0.52 18 6.91 4.55 0.55 124A 17A 17 0.11 0.72 0.10 0.18 5.00 6.62 1.19 364.69 364.11 25.0 1 10.00 1 15 1 17.70 6.42 0.98 124 17 16 0.14 0.72 0.10 0.18 5.00 6.62 1.19 364.69 364.11 38.8 1.50 15 6.85 0.97 0.67 117 16 1 8 0.39 0.86 0.34 1.53 8.30 5.76 1 8.81 1 364.00 363.79 29.9 0.70 18 7.63 4.78 0.11 116 15 14 0.55 0.72 0.40 0.35 5.00 6.62 2.32 383.10 381.00 186.6 1.12 15 6.45 4.05 1.69 115 14 11 0.15 0.86 0.13 0.48 6.70 6.14 2.94 380.90 376.67 615.0 6.74 15 14.53 2.81 0.43 114 13 11 0.10 0.86 0.09 0.57 5.00 6.62 3.74 378.50 377.50 65.7 1.52 15 6.90 3.39 2.36 113 12 11 0.78 0.86 0.67 1.24 5.00 6.62 8.18 380.19 377.75 30.7 7.64 15 15.47 10.88 0.15 112 11 10 0.00 0.00 0.00 1.24 7.40 5.97 7.38 376.57 374.41 50.5 4.06 15 11.28 7.05 0.14 111 10 9 0.07 0.72 0.05 1.29 7.50 5.94 7.64 374.31 372.38 51.4 3.57 15 10.58 7.30 0.14 110 9 8 0.14 0.86 0.12 1.41 7.60 5.91 8.31 372.28 363.99 146.4 5.61 15 13.26 7.29 0.38 109 8 8A 0.50 0.80 0.40 3.38 8.40 5.74 19.41 361.73 361.69 3.9 1.03 24 19.85 6.61 0.01 107 7 6 0.41 1 0.79 1 0.32 0.32 5.00 6.62 2.12 351.47 349.30 22.4 8.21 15 16.03 1 9.30 1 0.23 106 6a 6 0.06 0.86 0.05 0.05 5.00 6.62 0.33 348.50 348.23 23.7 1.03 15 5.67 0.67 1.58 105 6 5 0.00 0.00 0.00 0.38 6.60 6.17 2.32 348.13 341.89 187.1 3.26 15 10.11 6.86 1.44 108 5a 5 4.41 0.81 3.57 1 3.95 5.00 6.62 26.13 345.87 339.12 66.3 1 9.79 1 24 1 61.34 1 8.93 0.15 104 5 4 0.25 0.24 0.06 4.01 8.00 5.82 23.32 338.97 338.72 10.0 1.78 24 26.15 9.42 0.03 103 4 3 0.00 0.00 0.00 4.01 8.00 5.81 23.28 335.68 320.61 90.3 15.99 24 78.37 8.15 0.19 102 3 2 0.64 0.86 0.55 5.05 9.30 1 5.54 27.98 320.51 318.40 61.4 3.23 24 35.22 1 12.46 0.12 101 2 1 0.17 0.86 0.15 5.20 9.40 5.52 28.68 317.00 315.35 67.4 2.39 24 30.08 10.85 0.13 STORMWATER CONVEYANCE CHANNELS SCC W D 8 LINER 1 4.0 1.0 0 VDOT EC-2 2 4.0 1.0 0 CONCRETE 3 4.0 1.0 0 RIP RAP EC-2 blanket/matting shall be Model S150 as manufactured by North American Green, or approved equal. LD-268 Roadside Ditch Calculation Woolen Mills Light Industrial Park Earth Proi InIng CA Tc 12 Q2 Additional Flows Total 2-Year Flow Slope Allow n select n=.03 n=.05 n=.015 110 Q10 Additional Total DEP Remarks STA STA DA C Inc Acc ft/ft Vel Vel Qn VEL DEP Qn DEP Flows 10-Year Flow SCC 1 3+33 4+12 2.00 0.40 0.80 0.8 11.0 4.0 3.22 3.22 0.066 4.0 0.05 0.16 3.32 0.62 5.43 4.35 4.35 0.70 EC-2 MWM SCC 2 0+00 2+62 3.1 0.55 171 1 7.12 0 3.9 6.57 6.57 0.015 N/A 0.015 1 0.10 0.68 5.23 8.92 8.92 0.77 CONCRETE 4 \ STORMWATER CONVEYANCE CHANNEL 612 SCALE: NTS NOTES: 1. Trash Rack must be installed when S8-1 is converted to SWM-1. 3.59' Diameter Orifice w/ trash rack INV = 314.50 Manufactured Trash Rack and Anti -Vortex Device 4' Diameter Concrete Riser v DETAIL SWM-1 Stage Storage & Discharge Report Elevation Storage (CF) Orifice (cfs) Riser Crest (cfs) Spillway (cfs) 314.50 0 0 0 0 315.50 4943 0.28 0 0 316.50 11534 0.42 0 0 317.50 19846 0.53 0 0 318.50 29951 0.56 3.46 0 319.50 1 41922 1 0.07 1 17.38 1 22.30 320.50 1 55832 1 0.03 1 19.42 1 122.35 Top of Embankment Elev = 320.5 Existing Grade Emergency Spillway shall be planted with Tall Fescue grass Emergency Spillway Length = 20' Crest = 319.0 110.3' - 18"HDPE 0 0,507 I 5' Dias SWM-1 OUTLET STRUCTURE DETAIL (STR-42 SCALE: NITS Refer to 6/C-612 for profile 330 325 320 315 310 305 300 LD-347 InletlD HGLDn LineSize Line Length SfDn VelDn Hw HGUnct Grnd/RimElevUp (ft) (in) (ft) M (ft/s) (ft) (ft) I (ft) Str-02 316.89 241 70.091 01 10.85 1.831 318.831 324.32 Str-03 319.76 24 65.364 ol 12.46 1 831 322341 325.8 Str-04 322.34 241 94.272 01 7.971 1.711 337.391 350.86 Str-05 340.181 241 14.0471 01 9.391 1.711 340.681 347.95 Str-05A 340.681 241 68.9211 01 7.811 1.621 347.491 348.78 Str-06 342.32 15 191.1251 01 6.86 0.64 348.77 353.81 Str-06A 348.771 151 26.3211 01 0.671 0.23 348.73 353 Str-07 349.621 151 26.4361 01 9.31 0611 352.08 355.72 Str-08 363.41 24 3.9 0.871 6.61 3.26 364.99 368.5 Str-09 364.99 15 147.686 0 7.29 1.1 373.38 377.62 Str-10 373.38 15 54 0 7.3 1.1 375.41 379.21 Str-11 375.41 15 53.148 0 7.05 1.08 377.65 383.71 Str-12 378.21 15 31.918 0 10.88 0.85 381.04 385.06 Str-13 377.74 15 65.735 01 3.39 0.29 378.791 381.13 Str-14 1 377.651 151 62.7541 01 2.811 0.691 381.591 387 Str-15 1 381.591 151 189.1981 01 4.051 0.61 384.111 385.93 Str-16 365.29 18 29.9 0.86 4.78 1.74 365.74 369.67 Str-17 365.74 15 38.76 0.045 0.97 1.08 365.77 367.28 Str-17A 372.15 15 25 0 6.42 0.28 374.78 389.5 Str-18 365.74 15 149.15 0.997 4.55 2.39 367.27 371.35 Str-19 367.27 15 122.557 1.016 4.6 0.96 370.86 374.49 Str-20 370.86 15 36.284 0 3.83 0.75 374.081 378.6 Str-21 1 374.0181 151 50.839 0 5.36 0.75 377.25 383.72 Ex Str-22 1 377.251 151 160.382 0 5.5 0.76 394.381 402 Ex Str-23 1 394.51 151 148.894 0.839 4 511 1.09 396.061400.84 Str-29 1 326.31 151 2301 01 6.391 0.681 332.081 334.24 Str-30 1332.081 151 45.31 01 2.791 0.51 334.51 335.3 Str-33 1365.681 151 11.7331 0.0321 0.821 1.541 365.71 366.27 Str-35 1 370.51 181 28.0071 01 12.861 0.991 373.591 366.14 LD-204 Stormwater Inlet Computations Sag inlets Only cu Q Y Q J� CL C C C w i Z VI a) Q 0 O VI 3 U cu Q +.+ Q O- Q O U Q ate+ L O m O V1 '� X y 3 tD N Cu H ++ C be Z Y C O w V H Y Z - y '� N X iU l7 m L u y a O 2 O i N C Q E U ++ > ++ Q C y. O 7 ++ m 7 X 7 Y C 0 V H (e 2 O M O ++ O Q tU W 00 7 \ v1 Z U U s U v7 Cf 0 l7 a l7 H tN O o C1 Cf U o 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 (ft) (al (C) (in/hr) (cfs) (cfs) (cfs) (ft/ft) (ft/ft) (ft/ft) (ft) (ft) M (cfs) (cfs) (ft) (ft) (ft) Str-05 DI-3A 2.5 0.25 0.24 0.06 4.0 0.24 0.015 0.02 0.02 0.08 3.31 0.3 100•00 0.24 0 Str-07 DI-2A 2.2 0.32 0.86 0.28 4.0 1.1 0.015 0.04 0.02 0.08 5.07 0.17 100•� 1.1 0 Str-08 DI-3C 4 0.18 0.86 0.15 4.0 0.62 0.015 0.08 0.02 0.08 100•� 0.62 0 0.36 0.5 0.72 5.39 Str-10 DI-2A 2.2 0.07 0.72 0.05 4.0 0.2 0.015 0.05 0.02 0.08 2.95 0.15 100•� 0.2 0 Str-12 DI-36 8 0.52 0.86 0.45 4.0 1.62 0.015 0.05 0.02 0.08 4.81 0.21 100•� 1.62 0 Str-14 DI-36 6 0.15 0.86 0.13 4.0 1.33 0.015 0.08 0.02 0.08 7.96 0.32 100•00 1.33 0 Str-15 DI-36 7 0.48 0.72 0.35 4.0 1.38 0.015 0.03 0.02 0.08 7.26 0.4 100•00 1.38 0 Str-16 DI-2A 2.2 0.3 0.86 0.30 4.0 1.03 0.58 1.61 0.015 0.03 0.02 0.08 3.24 0.14 100•00 1.03 0 Str-19 DI-3A 2.5 0.43 0.86 0.37 4.0 1.48 0.015 0.07 0.02 0.08 3.65 0.21 61% 0.9 0.58 Ex Str-23 DI-36 7 0.25 0.72 0.18 4.0 0.72 0.015 0.04 0.02 0.08 1 4.77 0.34 1 100% 0.72 0 Str-29 DI-36 4 0.29 0.86 0.25 4.0 0.84 0.015 0.09 0.02 0.08 1 6.58 0.33 1 100010 0.84 0 g��2� ■Ia.Iti7:Ia�r�r■� '�'ti'rl:� e 1 �■� �a�_ lit=n_rw• Ii - �S_��r�7�r.■ -0+50 0+00 5 SWM-1 OUTLET PROFILE -61 HORIZONTAL SCALE: 1"=30' VERTICAL SCALE: 1"=10' SWM-1 Emergency Spillway Trapezoidal Bottom Width (ft) = 20.00 Side Slopes (z:1) = 2.00, 2.00 Total Depth (ft) = 1.00 Invert Elev (ft) = 319.00 Slope (%) = 0.50 N-Value = 0.030 Calculations Compute by: Known Depth Known Depth (ft) = 0.54 Ell (ft) 321.00 320.50 320.00 319.50 319.00 318.50 1+00 Highlighted Depth (ft) = 0.54 Q (cfs) = 25.37 Area (sgft) = 11.38 Velocity (ftts) = 2.23 Wetted Perim (ft) = 22.41 Crit Depth, Yc (ft) = 0.37 Top Width (ft) = 22.16 EGL (ft) = 0.62 Section 0 5 10 15 20 25 30 35 Reach (ft) SWM-1 EMERGENCY SPILLWAY 25-YEAR DISCHARGE SCALE: nits Depth (ft) 2.00 1.50 1.00 0.50 -0.50 330 325 320 315 310 305 300 1+75 Hyd. No. 5 DA-M Routed Hydrograph type Storm frequency Time interval Inflow hyd. No. Reservoir name storage Indication method used Q (cfs 50.00 40.00 20.00 10.00 = Reservoir = 25 yrs = 2 min = 4 - DA-M = SWM Basin Peak discharge = 43.81 cfs Time to peak = 12.13 hrs Hyd. volume = 152,710 cult Max. Elevation = 319.54 ft Max. Storage = 42,395 cult Q(crs) 50,00 40.00 30.00 20.00 10.00 0.00 0.00 0 4 8 12 16 20 24 28 32 36 - Hyd No. 5 Hyd No. 4 ® Total storage used = 42,395 cult Time (hi FOR DA-M 25 YEAR HYDROGRAPH, SEE SHEET C-601. z 0 E a a m w w W a 50 54 o y0, F Z ZD:Z) 0 0 U U z 24 O 24 a _4 E� 6 _ �a �j wow z� -- Q E a E- U > a F 0 F W a I x Irn SHEET NO. C-612 SHEET 14 of 20 POINT OF ANALYSIS 1 PRE -DEVELOPMENT DA-A 1-Year DA-A 10-Year Hydrograph type Storm frequency Time interval Drainage area Basin Slope Tc method Total precip. Storm duration = SCS Runoff = 1 yrs = 2 min = 7.680 ac = 0.0 % = User = 3.04 in = 24 hrs Peak discharge Time to peak Hyd. volume Curve number Hydraulic length Time of conc. (Tc) Distribution Shape factor = 1.467 cis = 728 min = 8,823 cult = 59 = 0 it = 19.00 min = Type II = 484 Q () DA-A Hyd. No. 1 - 1 Year Q I 2.00 2.00 1.00 1.00 0.00 0 120 240 360 480 600 720 840 960 1080 1200 Hyd No. 1 0.00 1320 1440 1560 Time (min) Hydrograph type Storm frequency Time interval Drainage area Basin Slope Tc method Total precip. Storm duration = SCS Runoff = 10 yrs = 2 min = 7.680 ac = 0.0 % = User = 5.54 in = 24 hrs Peak discharge Time to peak Hyd. volume Curve number Hydraulic length Time of conc. (Tc) Distribution Shape factor = 12.76 cis = 726 min = 43,262 tuft = 59 = 0 It = 19.00 min = Type II = 484 Q (cfs) DA-A Hyd. No. 1 - 10 Year Q (cfs) 14.00 14.00 12.00 12.00 10.00 10.00 e.oD 8.00 6.00 6.D0 4.00 4.00 2.00 2.00 0.00 0 120 240 360 480 600 720 840 960 1080 1200 - Hyd No. 1 0.00 1320 1440 1560 Time (min) DA-A 1-Year (ENTIRELY WOODED CONDITIONS) ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------------- ------�annnn-annnn--annnn--- r Iittttttttt-Iittttttttt-Iittttttttt-IIIIIIIIIIII.Iittttttttt-IIIIIIIIIIII.IItttttttt-IIIIIIIIIIII.IIIIIIIIIIII.IIIIIIIIIIII.Iittttttttt-IIIIIIIIIIII.Iitttttttttt. r r .I ■-■-■-■-■-■-III-■-■-■-■-■- . -nnnnnt-nnnnnt-nnnnnt-nnnnnt-nnnnnt-i r noon.nnnnnt-nnnnnt-nnnnnt-nnnnnt--� nnnnnt-nnnnnt-nnnnnt-nnnnnt--�.noon.nnnnnt-nnnnnt-nnnnnt-nnnnnt--- r r annnn-annnn-annnn-nnnnn--- . ann�annnn-annnn--annnn--- r r -------------- -------------- ------ ��annnn-annnn--annnn--- Drainage Area A A Soils B Soils C Soils D Soils Total Area (acres): 7.68 Drainage Area A A Soils B Soils C Soils Forest open Space --undisturbed, protected Area (acres) 0.00 5.81 0.00 0.00 Runoff Reduction Forest/Open Space -- undisturbed, protected Area (acres) 0.00 9.00 0.00 forest/open space or reforested land CN 30 55 70 77 Volume IliI 0 forest/open space or reforested land CN 30 55 70 Managed Turf-- disturbed, graded for yards or other Area (acres) 0.13 1.14 0.00 0.00 Managed Turf-- disturbed, graded for yards or other Area (acres) 0.00 0.00 0.00 turf to be mowed/managed CN 39 61 74 80 turf to be mowed/managed CN 39 61 74 Area (acres) 0.00 0.60 0.00 0.00 Area (acres) 0.00 0.00 0.00 Impervious Cover CN 98 98 98 98 Impervious Cover CN 1 98 1 98 1 98 CN DA.A 59 1-year storm 2-year storm 10-year storm 1-year storm 2-year storm 10-year storm RVDeveloped (Watershed -inch) with no Runoff Reduction* 0.32 0.56 1.55 DA * RVpre (watershed -in.) = Total RVpre RVDeveloped (Watershed -inch) with no Runoff Reduction* 0.21 0.40 1.26 RVdeveloped (Watershed -inch) with Runoff Reduction* 0.32 0.56 1.55 7.68 * 0.32 = 2.46 RVDeveloped (Watershed -inch) with Runoff Reduction* 0.21 0.40 1.26 Adiusted CN* 59 59 59 Adjusted CN* 1 55 1 55 55 POINT OF ANALYSIS 1 POST -DEVELOPMENT li 1-Year li 10-Year Hydrograph type Storm frequency Time interval Drainage area Basin Slope Tc method Total precip. Storm duration = SCS Runoff = 1 yrs = 2 min = 9.090 ac = 0.0 % = User = 3.04 in = 24 hrs Peak discharge Time to peak Hyd. volume Curve number Hydraulic length Time of conc. (Tc) Distribution Shape factor = 14.01 ofs = 724 min = 44,358 cuft = 81 = 0 It = 19.00 min = Type II = 484 Q (cfs) 15.00 DA-M Hyd. No. 4 - 1 Year Q (cfs) 15.00 12.00 12.00 9.00 9.00 6.00 6.00 3.00 3.00 0.00 0 120 240 360 480 600 720 840 960 1080 1200 Hyd No. 4 0.00 1320 1440 1560 Time (min) Drainage Area M A Soils B Soils Forest/Open Space -- undisturbed, protected forest/open space or reforested land Area (acres) 0.00 30 1.07 55 CN Managed Turf -- disturbed, graded for yards or other turf to be mowed/managed Area (acres) 0.00 39 2.86 61 CN Impervious Cover Area (acres) 0.00 98 5.16 98 CN RVDeveloped (Watershed -inch) with no Runoff Reduction* RVDeveloped (Watershed -inch) with Runoff Reduction* Adjusted CN* li Routed 1-Year r storm 1.34 0.90 73 r storm 1.84 1.39 75 Hydrograph type Storm frequency Time interval Inflow hyd. No. Reservoir name = Reservoir = 1 yrs = 2 min = 4 - DA-M = SWM Basin Peak discharge Time to peak Hyd. volume Max. Elevation Max. Storage = 0.587 cfs = 922 min = 44,339 cuft = 318.16 it = 26,384 cult Storage Indication medmd used. Q (cits) 15.00 DA-M Routed Hyd. No. 5 - 1 Year Q (cfs) 15.00 12.00 12.00 9.00 9.00 6.00 6.00 3.00 3.00 0.00 0 380 - Hyd No. 5 720 1080 - Hyd No. 4 0.00 1440 1800 2160 2520 2880 3240 ® Total storage used = 26,384 cult Time (min) Hydrograph type Storm frequency Time interval Drainage area Basin Slope Tc method Total precip. Storm duration = SCS Runoff = 10 yrs = 2 min = 9.090 ac = 0.0 % = User = 5.54 in = 24 hrs Peak discharge Time to peak Hyd. volume Curve number Hydraulic length Time of conc. (Tc) Distribution Shape factor = 36.49 ofs = 724 min = 114,402 cult = 81 = 0 It = 19.00 min = Type II = 484 Q () DA-M Hyd. No. 4 - 10 Year Q (cis) 40.00 40.00 30.00 30.00 20.00 20.00 10.00 10.00 0.00 0 120 240 360 480 600 720 840 960 1D80 1200 Hyd No. 4 0.00 1320 1440 1560 Time (min) C Soils D Soils 0.00 0.00 70 77 0.00 0.00 74 80 0.00 0.00 98 98 II B 81 ear storm 3.47 3.02 76 Total Area (acres): 9.09 Runoff Reduction li Routed 10-Year Hydrograph type Storm frequency Time interval Inflow hyd. No. Reservoir name = Reservoir = 10 yrs = 2 min = 4 - DA-M = SWM Basin Peak discharge Time to peak Hyd. volume Max. Elevation Max. Storage = 26.75 ofs = 732 min = 114,383 cuff = 319.28 ft = 39,106 cult Storage Intlication method used. Q () DA-M Routed Hyd. No. 5 - 10 Year Q (cis) 40.00 40.00 30.00 30.00 20.00 20.00 10.00 10.00 0.00 0.00 0 240 480 720 960 1200 1440 1680 1920 2160 2400 - Hyd No. 5 - Hyd No. 4 ® Total storage used = 39,106 cult Time (min) DA-L 1-Year ------------- ------------- ------------- -MINE---- ----- -- ---- r r r------I111111 ------- r r r r t -t .r :t .t. r t •.r r:rEll D Soils 0.00 0.00 80 0.00 98 CN DA. A 55 DA-L 10-Year Total Area (acres): Runoff Reduction Volume (ftal: CHANNEL PROTECTION COMPLIANCE SUMMARY TABLE Applicable Channel Protection Criteria Conditions Criteria A Criteria B Criteria C Discharge within Project Point Limits of consistent Total Total IF x Analysis Q2 Q cap V2 V111owable with design of g Qdevelo ed p RVdeveloped p IF Qpre- RVpre- Qdeveloped x 5 Q pre -developed x restored developed developed RVdeveloped RVpre-developed system ❑ Manmade 1 ❑ Restored ❑ YES 0.23* 12.47 0.8 1.47 2.46 2.89 <_ 2.89 ® Natural ® Manmade 2 ❑ Restored ❑ YES 1.18 1.53 0.8 2.01 1.15 1.8 < 1.8 ❑ Natural 3 ❑ Manmade 0.14 0.22 0.8 2.10 1.81 0.04 < 3.04 El Restored El YES ® Natural ❑ Manmade ❑ Restored ❑ YES < ❑ Natural ❑ Manmade ❑ Restored ❑ YES < ❑ Natural ❑ Manmade ❑ Restored ❑ YES < ❑ Natural ❑ Manmade ❑ Restored ❑ YES < ❑ Natural Channel Protection Criteria A. The stormwater conveyance system conveys the post -development peak flow rate from the two-year 24-hour storm event without causing erosion of 9.00 the system (V2 must be shown to be non -erosive) B. The development project, in combination with other stormwater runoff, is consistent with the design parameters of the restored stormwater 0 conveyance and the restored stormwater conveyance system is functioning as designed C. The discharge from the development satisfies the Energy Balance requirement (Qdeveloped x RVdeveloped) s IF x (Qpre-developed x RVpre-developed) Total R V=Drainage Area * RV (watershed -in.) where: Qdeveoped = the peak flow rate of runoff from the developed site men *Pre-Develo t Entirely Wooded = 0.65cfs RVdeveloped = the volume of runoff from the site based on developed conditions p y IF = an improvement factor (0.8 for sites > 1 acre, 0.9 for sites :5 1 acre) Post -Development Combined = 0.64cfs Qpre-developed = the peak flow rate of runoff from the pre -developed site RVpre-developed = the volume of runoff from the site based on pre -developed conditions Hydrograph type Storm frequency Time interval Drainage area Basin Slope Tc method Total precip. Storm duration = SCS Runoff = 10 yrs = 2 min = 0.650 ac = 0.0 % = User = 5.54 in = 24 hrs Peak discharge Time to peak Hyd. volume Curve number Hydraulic length Time of conc. (Tc) Distribution Shape factor = 1.876 cis = 718 min = 3,770 cuft = 61 = 0 ft = 5.00 min = Type II = 484 q (cis) DA-L Hyd. No. 6 - 10 Year Q (efs) 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. 6 Time (min) Drainage Area L A Soils B Soils C Soils D Soils Forest/Open Space -- undisturbed, protected Area (acres) 0.00 0.00 0.00 0.00 CN forest/open space or reforested land 30 55 70 77 Managed Turf-- disturbed, graded foryards or other Area (acres) 0.00 0.65 0.00 0.00 CN turf to be mowed/managed 39 61 74 80 Impervious Cover Area acres 0.00 98 0.00 98 0.00 98 0.00 98 CN CN DA.A 61 1-year storm 2-year storm 10-year storm RVDeveloped (Watershed -inch) with no Runoff Reduction* 0.38 0.65 1.70 RVDeveloped (Watershed -inch) with Runoff Reduction* 0.14 0.40 1.46 Adjusted CN* 52 55 58 DA-L & M Combined 1-Year -----nrrrrrrrrrrrrrrrr-nrrrrrrrrrrrrrrrr- . ----nrrrrrrrrrrrrrrrr-nrrrrrrrrrrrrrrrr-- . , , :' , , ' '' ----nrrrrrrrrrrrrrrrr-nrrrrrrrrrrrrrrrr-�-� ' -nnnnnnnnn-nnnnnnnnn-nnnnnnnnn-nnnnnnnnn-nnnnnnnnn- nnnnnnnnn-nnnnnnnnn-nnnnnnnnn-nnnnnnnnn-nnnnnnnnn-nrrrrrrrrrrrrrrr-�-� nnnnnnnnn-nnnnnnnnn-nnnnnnnnn-nnnnnnnnn-nrrrrrrrrrrrrrrrr-nrrrrrrrrrrrrrrrr- nnnnnnnnn-nnnnnnnnn-nnnnnnnnn-nnnnnnnnn-nnnnnnnnn-nnnnnnnnn- ----nrrrrrrrrrrrrrrrr-nrrrrrrrrrrrrrrrr- , , r t nrrrrrrrrrrrrrrrr-nrrrrrrrrrrrrrrr- nrrrrrrrrrrrrrrr-nrrrrrrrrrrrrrrrr-nrrrrrrrrrrrrrrrr-n�� ' ' ' nrrrrrrrrrrrrrrrr-nrrrrrrrrrrrrrrr- t- ._� --� r nnnnnnnnn-nnnnnnnnt. nnnnnnnnt-nnnnnnnnn-nnnnnnnnn- nnnnnnnnn-nnnnnnnnt. nnnnnnnnt-nnnnnnnnn-nrrrrrrrrrrrrrrr-- i Total Area (acres): 0.65 Runoff Reduction Volume (ft'): 572 DA-L & M Combined 10-Year Hydrograph t- frequencyStorm Time interval • = Combinedischarge = 10yrs = 2 min Time to peak .118,153cuft drain.r. 1 = 732 min r. . 28.00 r r --------- , ,, ���._ nnnrrrrrr■>. rrr . r :r r •.r rr �•r .:r r .r Ir STORMWATER VOLUME NARRATIVE 1. POINT OF ANALYSIS 1: THE BALANCE EQUATION CALCULATION SHOWS THE REQUIRED POST -DEVELOPMENT DISCHARGE IS LESS THAN THE PRE -DEVELOPMENT DISCHARGE FOR ENTIRELY WOODED CONDITIONS. CONSEQUENTLY, THE 1-YEAR POST -DEVELOPMENT DISCHARGE IS LESS THAN THE 1-YEAR PRE -DEVELOPMENT DISCHARGE FOR ENTIRELY WOODED CONDITIONS MEEETS CHANNEL PROTECTION. THE DISCHARGE IS LOCATED WITHIN THE 100-YR FLOODPLAIN SO FLOOD CONTROL IS NOT REQUIRED. 2. POINT OF ANALYSIS 2: BALANCE EQUATION IS MET FOR CHANNEL PROTECTION. POST DEVELOPMENT 10-YEAR RUN-OFF IS LESS THE PRE -DEVELOPMENT 10-YR RUN-OFF FOR FLOOD CONTROL. 3. POINT OF ANALYSIS 3: BALANCE EQUATION IS MET FOR CHANNEL PROTECTION. POST DEVELOPMENT 10-YEAR RUN-OFF IS LESS THE PRE -DEVELOPMENT 10-YR RUN-OFF FOR FLOOD CONTROL. 4. SEE C-620 FOR STORM WATER QUALITY NARRATIVE. 10-Year Flows Point of Analysis Pre Post 1 12.76 27.03 2 7.41 7.00 3 7.38 1.58 Drainage Area L & M Combined A Soils B Soils C Soils D Soils Total Area (acres): 9.74 Forest/Open Space -- undisturbed, protected Area (acres) 0.00 1.07 0.00 0.00 Runoff Reduction forest/open space or reforested land CN 30 55 70 77 Volume (ft'): 0 Managed Turf --disturbed, graded foryards or other Area acres 0.00 3.51 0.00 0.00 turf to be mowed/managed CN 39 61 74 80 Impervious Cover Area acres 0.00 5.16 0.00 0.00 CN 98 98 98 98 CN D.A. D 80 1-year storm 2-year storm 30-year storm RVDeveloped (watershed -inch) with no Runoff Reduction* 1.28 1.76 3.37 DA * RVpost (watershed -in.) = Total RVpos RVDeveloped (watershed -inch) with Runoff Reduction* 1.28 1.76 3.37 9.74 * 1.28 = 12.47 Adjusted CN* so so 80 0 0 0 z 0 x �' x F zCC w w O ca z w z w U Q C1 U � Z Z �aC\2o Z co �4 O W C p4 Q >� I z -u c ) ca W \..J WE"W Z W -1 U 7 0 U W W � . Z az W .i 0 cn co a 0.0 z z W w w CD Fa CD C) U U U U r F z 0 0 1U z1-1N U) Fr -I W E M as a� Z O W Z D xa �-I W E - F rU) �> SHEET NO. C-620 SHEET 15 of 20 POINT OF ANALYSIS 2 PRE -DEVELOPMENT DA-B 1-Year DA-B 10-Year Hydrograph e bP Storm frequency Time interval Drainage area Basin Slope Tc method Total precip. Storm duration = SCS Runoff = 1 yrs = 2 min = 1.920 ac = 0.0 % = User = 3.04 in = 24 hrs Peak discharge r9 Time to peak Hyd. volume Curve number Hydraulic length Time of conc. (Tc) Distribution Shape factor = 2.014 cfs = 718 min 67 = 4,230 cuft = 68 = 0 ft = 5.00 min = Type II = 484 Q (ems) DA-B Hyd. No. 12 -1 Year Q (its) 3.D0 3.00 2.Do 2.00 1.00 1.00 0.00 0 120 240 360 480 600 720 840 960 1080 1200 - Hyd No. 12 0.00 1320 1440 1560 Time (min) Hydrograph e type Storm frequency = SCS Runoff = 10 yrs Peak discharge r9 Time to peak = 7.414 cfs = 718 min 67 Time interval = 2 min Hyd. volume = 14,851 cult Drainage area = 1.920 ac Curve number = 68 Basin Slope = 0.0 % Hydraulic length = 0 ft Tc method = User Time of conc. (Tc) = 5.00 min Total precip. = 5.54 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 DA-B Q (s) Hyd. No. 12 -- 10 Year Q (ors) 8.00 8.00 6.00 6.00 4.00 4.00 2.00 2.00 0.00 0.00 0 120 240 360 480 600 720 840 960 1080 12DO 1320 1440 1560 - Hyd No. 12 Time (min) Drainage Area B A Soils B Soils Forest/Open Space - undisturbed, protected forest/open space or reforested land Area (acres) 0.00 30 0.85 55 CN Managed Turf-- disturbed, graded for yards or other turf to be mowed/managed Area (acres) 0.00 39 0.60 61 CN Impervious Cover Area (acres) 0.00 98 0.47 98 CN C Soils D Soils Total Area (acres): 1.92 0.00 0.00 Runoff Reduction 70 77 Volume ft3: 0 0.00 0.00 74 80 0.00 0.00 98 98 CN Da e 67 1-year storm 2-year storm 10-year storm RVDeveloped (watershed -inch) with no Runoff Reduction* 0.60 0.94 2.19 DA * RVpre (watershed -in.) = Total RVpre RVDeveloped (watershed -inch) with Runoff Reduction* 0.60 0.94 2.19 1.92 * 0.60 = 1.15 Adjusted Ili 67 67 67 POINT OF ANALYSIS 2 POST -DEVELOPMENT DA-N 1-Year DA-N 10-Year Hydrograph type Storm frequency Time interval Drainage area Basin Slope Tc method Total precip. Storm duration = SCS Runoff = 1 yrs = 2 min = 1.370 ac = 0.0 % = User = 3.04 in = 24 hrs Peak discharge Time to peak Hyd. volume Curve number Hydraulic length Time of conc. (Tc) Distribution Shape factor = 2.166 cfs = 718 min 75 = 4,353 cult = 74 = Oft = 5.00 min = Type II = 484 Q (s) DA-N Hyd. No. 14 - 1 Year Q (s) 3.00 3.00 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. 14 Time (min) 1• ------ ------- 1 1 •1 •1 •:1 •11 1 :i1 ••1 1:1 1il 1 1 .1 Drainage Area N A Soils B Soils Forest/Open Space -- undisturbed, protected forest/open space or reforested land Area (acres) 0.00 30 0.34 55 CN Managed Turf-- disturbed, graded for yards or other turf to be mowed/managed Area (acres) 0.00 39 0.44 61 CN Impervious Cover Area acres 0.00 98 0.59 98 CN 1-year storm RVDeveloped (watershed -inch) with no Runoff Reduction* 0.99 RVDeveloped (watershed -inch) with Runoff Reduction* 0.99 Adjusted CN* 75 DA-N 1-Year Routed Hydrograph type Storm frequency Time interval Inflow hyd. No. Reservoir name = Reservoir = 1 yrs = 2 min = 14 - DA-N = DA-N Storage Peak discharge Time to peak Hyd. volume Max. Elevation Max. Storage = 1.052 cis = 722 min = 4,353 cult = 366.20 ft = 706 cult Slur•ge Indication method used. Q (de) DA N Routed Hyd. No. 17 - 1 Year Q (cfs) 3.00 3.00 2.00 2.00 1.00 1.00 0.00 0 120 240 360 480 600 - Hyd No. 17 - Hyd No. 14 0.00 720 840 960 1080 1200 1320 1440 1560 ® Total storage used = 706 tuft Time (min) r storm 1.42 1.42 75 C Soils D Soils 0.00 70 0.00 77 0.00 74 0.00 80 0.00 98 0.00 1 98 30-year storm CN D.A. c 75 2.89 2.89 75 DA-N 10-Year Routed Total Area (acres): 1.37 Runoff Reduction Vol me IIJ 0 ..... -1101 • , . 1 c . 11 ------------- ����� t.��llllll�llllll�llllll�llllll�llllll�llllll� � � IIIIII�IIIIII�IIIIII�III�.IIII�� �_ IIIIII�IIIIII�IIIIII�IIIIII�IIIIII� 1 1 1 •1 •:1 •11 1 1 ••1 1:4 CONSTRUCTION RECORD DRAWINGS (AS -BUILT) FOR VSMP The followingis a list of information required on construction record drawings for stormwater facilities reference Water Protection Ordinance 17-422 . It is q g � ) preferable that the construction record drawing be prepared by someone other than the designer. Please do not provide design drawings as construction record drawings. A. A signed and dated professional seal of the preparing engineer or surveyor. B. The name and address of the firm and individual preparing the drawings on the title sheet. C. The constructed location of all items associated with each facility, and the inspection records to verify proper dimensions, materials and installation. The items include, but are not limited to the following: 1. Inspection Records and photographs for pipe trenches and bedding, including underdrains. 2. Video Pipe Inspection for any pipes which are not accessible or viewable. 3. Updated Location with geo-coordinates of all facilities. 4. Verified Drainage Area maps for the drainage area treated, and for drainage to the facilities. 5. Current physical and topographic survey for all earthen structures. Ponds should include a survey of the pond bottom. Surveys should verify pond volumes are per design. Corrections may be required for alterations from the design. 6. Plants, location and type. 7. Plans and profiles for all culverts, Pipes, Risers, Weirs and Drainage Structures - Display the installed type of drainage structures, culvert/pipe size, weirs, materials, inlets or end treatment(s), inlet and outlet protection, alignment and invert elevations compared to design. 8. Computations: For significant deviations from design, provide sealed computations verifying that the asbuilt condition is equivalent or better than design. 9. Ditch Lines - Display the constructed location of all ditch lines and channels, including typical sections and linings. 10. Easements Show all platted easements with dead book references labeled. Facilities and drainage must be within platted easements. Provide copies of recorded documents. P g P P 11. Guardrail, fences or other safety provisions - Display the constructed location of all safety provisions; fences, guardrail, including the type, length and applied end treatments, compared to design. 12. Material layers - bioflter media stone layers, sand layers, keyways and cores must be verified as to material types and depths. Include inspection reports, boring or test pit reports and materials certifications. Biofilter media must be an approved state mix. 13.Access roads - show location of access roads, surface treatment, drainage, etc, as applicable. 14. Compaction reports are required to verify fill compaction in dams. 15. Manufacturers certifications for proprietary BMP's certifying proper installation and functioning. DA-0 1-Year • 1 • ���i16'IB' IB' IB' IB'IB'IB'IB'IB' ' ��■�1'IB'IB'IB'IB'IB'IB'IB'IB' , . IB' IB' IB' IB' IB' IB' IB' IB' IB' IB' IB' IB' IB' IB' IB' IB' M■■■MIB'IB'IB'IB'IB'IB'IB'IB' IB' IB' IB' IB' IB' IB' IB' IB' 1 1 ---�-1•Bi •)-1•••B!•�1•si•1•si•1•si•IB!♦ 1'IBB�1'1'IB'1' �1'1'1'�IB'IBBBBBB� , , IB!•�IB'IB'�� IB!•IB!•IB'IB'IBi�� 1 1 IB!•�IB'��� IB!•IB!•IBBBBBBBBI�IBi�� 1.!.1•B66666611•B66666611•B66666611•B66666611•!• IB!•IB!•IBBBBBB!♦ IBi�16' IB'IB'IB'IB'IB'IB!• IB!•IB'IB' IB'IB'IB' IB'IB'IB'IB'IB'IB!• B'IB!•1��16'IB'IB' IB'IB'IB'IB'IB'IB!• IB!•IB'1��16'IB'IB' , , IB'IB'IB'IB'IB'IB!• BB!•IB'IB' IB'IB'IB' IB'IB'IB'IB'IB'IB!•I.�IB'IB'_ IB'IB'IB' IB'IB'IB'IB'IBi16!•�IB!_ �� IB'IB'IB' 1 11 IBBBBBBBB�IBBBBBBBB�IBBBBBBBB�IBBBBBBBB�IBBBBBBBB�IBBBBBBB�I--�- 1 11 .1 •:1 .11 1 1 ••1 1:1 11 1 1 111 11 .1 Drainage Area O A Soils Forest/Open Space -- undisturbed, protected forest/open space or reforested land Area (acres) 0.00 30 CN Managed Turf -- disturbed, graded for yards or other turf to be mowed/managed Area (acres) 0.00 39 CN Impervious Cover Area (acres) 0.00 98 CN 1-year storm RVDeveoped (watershed -inch) with no Runoff Reduction* 0.41 RVDeveloped (watershed -inch) with Runoff Reduction* 0.41 Adjusted CN* 62 DA-N Routed & DA-0 Combined 1-Year Hydrograph type Storm frequency Time interval Inflow hyds. = Combine Peak discharge = 1 yrs Time to peak = 2 min Hyd. volume = 15,17 Contdb. drain. area = 1.179 cis = 720 min = 4,831 cult = 0.370 ac Q (cis) DA-N Routed $ DA-0 Combined Hyd. No. 19 - 1 Year Q (ds) 2.00 2.00 1.00 1.00 0.00 0 120 240 360 480 600 720 840 960 1080 1200 - Hyd No. 19 - Hyd No. 15 - Hyd No. 17 0.00 1320 1440 1560 Time (min) DA-0 10-Year Hydrograph type Storm frequency Time interval Drainage area Basin Slope Tc method Total precip. Storm duration = SCS Runoff = 10 yrs = 2 min = 0.370 ac = 0.0 % = User = 5.54 in = 24 hrs Peak discharge = 1.068 cfs Time to peak = 718 min 62 Hyd. volume = 2,146 cult Curve number = 61 Hydraulic length = Oft Time of conc. (Tc) = 5.00 min Distribution = Type II Shape factor = 484 Q (ds) DA-0 Hyd. No. 15 -- 10 Year Q (ds) 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. 15 Time (min) B Soils C Soils D Soils Total Area (acres): 0.37 0.29 0.00 0.00 Runoff Reduction 55 70 77 Volume (ft): 0 0.02 0.00 0.00 61 74 80 0.06 0.00 0.00 98 98 98 CN oA.o 62 ar storm 10-year storm 0.69 1.78 0.69 1.78 62 62 DA-N Routed & DA-0 Combined 10-Year Illlllll�llllllll�llllllll���lllllll� t�llllllll�llllllll�ll��llllllll�lllllll� 1 . 1 .1 •:1 •11 1 :1 •.1 1:1 11 1 1 .1 Drainage Area & O Combined A Soils B Soils Forest/Open Space -- undisturbed, protected forest/open space or reforested land Area (acres) 0.00 30 0.63 55 CN Managed Turf -- disturbed, graded for yards or other turf to be mowed/managed Area (acres) 0.00 39 0.46 61 CN Impervious Cover Area (acres) 0.00 1 9 0.65 1 98 CN RVDeveloped (watershed -inch) with no Runoff Reduction* RVDeveloped (watershed -inch) with Runoff Reduction*1 Adjusted CN* 1-year storm 0.88 0.81 1 71 2-year storm 1.29 1 1.22 1 72 C Soils D Soils Total Area (acres): 1.74 0.00 0.00 Runoff Reduction 70 77 Volume (ft3): 455 0.00 0.00 74 80 0.00 0.00 98 98 CN(D.A. E 73 ear storm 2.71 DA * RVdev (watershed -in.) = Total RVdev 2.64 1.74 * 0.88 = 1.53 72 1 n ..40 t0gB6u �W Nq ____________ a .. s tye r9�'ipiBF ss6 B LL 55I ��\N) A ASS / J N / r N S O x J 0 � o a 4 + + f z ,C 1� J Z + + FOREST/OPEN SPACE 6 0 Oho A MANAGED TURF �00 io, OY \ QUO O m ® IMPERVIOUS COVER 0 0 t�pB BBS66P✓t 1 W BB %°iuNiiow O W d E-F \-- -------------- z d d / \ x „r jam\ C1 ---- is • • c_ • y _ BB so ylg-yy:l' 1:T: LT: •T yam. /y!• :: •-.: %,� �' F�-I O vSi yi a e-L a a • • 1 � n• y • .-f!3 it i! Y a?-{lai%T?••u%T� •••••••• •.YJa� LS sf •i'/// ��®�a1 r1 T- W Qi �.I �` .• t mot, -a 1[',SYuyirjii-�YF t • :ter ,a • /' ,1.' ^ w E,C\i C---- Fi .a5:i.� �e.(tY9Si _ 3T�YS'i�.t_t�t=tr --•Y• ,S ,'at iB � C\2 ,--I � 2Mgr9'i�- !F3T_35..-e-'e-" rl ...Q• •3 /' �y 0:..) t . c r»y'f ea a+' Yip • n`..a LI•'a j, r/j �•_•-•-f Ye-•., lYa ofi ••:f •Sr •_S•\• lalj __ - _ / 4i%' r, •rY,�.a_• i Y�.a yA•Yl • La-f i J as-ta-• a.ii} _ _ g6 d, _ `, rNy •h • X.ti • aA:YT.t y"•_L+-•Y: ` j .k•'r ti• _ --_ - Px-�.•�o%'rr . '. /�''' I� Fi-I U CJi. Q /✓'yr• YMiwy • • • • •Jrfi SaYi `• i?.1•i BB rDIt- %- �llll r� V :Y• r. si A:... ..._L„_.Y:. ar v-:-a-�_ � � -- _ e 1n%e- / � (�? Q'-r �: ✓ . iTiY6Yi _ axYi Lt s i-• _ �a�--`BB1 B�".rye W�'.rt �i'' - W W FJ///: • - � IIYT � - .LTG i • � Siai• - � BBr�`p - '//' � ]VL1 W F-I •,(,•S.fi S.l �t _ __ YSi ---___ _ ``___ - ii%r4 O YOY F �,( Li �.(� Sl t �Ti • dlteYi __ " _ "1------ - _ a <1 v 4N���Tf4•Srf i�a.t5�- , -- _ //i%i U _ ------ ___ - - ------------- s r j'^ 0. 111PDOr4 To �4ypN1�'50N6 ff 100' 0 100' 200' 300 PRE -DEVELOPMENT LAND USE PLAN 62V SCALE: 1" = 100' SCALE: 1"=100' ,y. .DY TWB6BSB pB�ggD�6 .B% IN + + + + FOREST/OPEN SPACE fO�o MANAGED TURF .O Oho 0,70 ® IMPERVIOUS COVER AGO TO ecuMy6�i \\ \I GO 1-60-Bfie,,Bt 1 \ pgOsd •SO W B \ p0 Hr BS° , __ ;use- f 332 f I� 'll� I l; b' E / `� PB BOB pj5C6 ./ ,.�� iiiliU E- V1 '_® r wspe /� 1t !=� ---- 1 \ 1 I'U E I r I i Jill Jill1 z 2 I _ r 100' 0 100' 200' 300' U) POST -DEVELOPMENT LAND -USE PLAN 11111111 11111111 24 z SCALE: 1" = 100' SCALE: 1"=100' 0r O F� Q C�2 � a a �U) as aU) z�a woz o� E-Ai �z F V W x a E 1-4 W W 7) rq SHEET C-621 NO. SHEET 16 of 20 POINT OF ANALYSIS 3 PRE -DEVELOPMENT DA-C 1-Year DA-C 10-Year H d rae Y ro9 Ph type Storm frequency Time interval Drainage area Basin Slope Tc method Total precip. Storm duration = SCS Runoff = 1 yrs = 2 min = 2.320 ac = 3.9 % = LAG = 3.04 in = 24 hrs Peak discharge r9 Time to peak Hyd. volume Curve number Hydraulic length Time of cone. (Tc) Distribution Shape factor = 2.104 cis = 724 min = 6,434 cuft = 71 = 640 ft = 14.63 min = Type II = 484 Q (cfs) DA-C Hyd. No. 27 - 1 Year Q (cfs) 3.00 3.00 1 1 1 12.00 2.00 I I I I I I1.00 1.00 0.00 0 120 240 360 480 600 720 840 960 1080 1200 - Hyd No. 27 0.00 1320 1440 1560 Time (min) H dro re h type Y 9 P YP = SCS Runoff Peak discharge r9 = 7.378 cfs Storm frequency = 10 yrs Time to peak = 722 min Time interval = 2 min Hyd. volume = 20,797 cuft Drainage area = 2.320 ac Curve number = 71 Basin Slope = 3.9 % Hydraulic length = 640 ft Tc method = LAG Time of cone. (Tc) = 14.63 min Total precip. = 5.54 in Distribution = Type II Storm duration = 24 hrs Shape factor = 484 DA-C Q (cfs) Hyd. No10 Year Q (cfs) 8.00 8.00 6.00 6.00 4.00 4.00 2.00 2.00 0.00 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 - Hyd No. 27 Time (min) Drainage Area C A Soils B Soils C Soils D Soils Total Area (acres): 2.32 Forest/Open Space -- undisturbed, protected Area (acres) 0.00 1.00 0.00 0.00 Runoff Reduction forest/open s ace or reforested land P CN 30 55 70 77 3 Volume 0 ou eft Managed Turf --disturbed, graded for yards or other Area (acres) 0.00 0.54 0.00 0.00 turf to be mowed/managed CN 39 61 74 80 Area (acres) 0.00 0.78 0.00 0.00 Impervious Cover CN 98 1 98 1 98 1 98 CN(DA. c 71 1-year storm 2-year storm 10-year storm DA * RVpre (watershed -in.) = Total RVpre RVDeveloped (watershed -inch) with no Runoff Reduction* 0.78 1.17 1 2.53 RVDeveloped (watershed -inch) with Runoff Reduction* 1 0.7 1 1.17 1z.53 2.32 * 0.78 = 1.81 Adjusted CN* 1 71 1 71 1 71 Drainage Area P A Soils I B Soils C Soils D Soils I Total Area (acres): 0.84 Forest/Open Space -- undisturbed, protected Area (acres) 0.00 0.50 0.00 0.00 Runoff Reduction 1 forest/open space or reforested land CN 30 55 70 77 Volume (ft'): 0 Managed Turf-- disturbed, graded for yards or other Area (acres) 0.00 0.34 0.00 0.00 turf to be mowed/managed CN 39 61 74 80 Impervious Cover Area (acres) 0.00 0.00 0.00 0.00 CN 1 98 98 98 1 98 CN(DA. E) 57 1-year storm 2-year storm 10-year storm RVDeveloped (watershed -inch) with no Runoff Reduction* 10.26 0.48 11.40 DA * RVdev (watershed -in.) = Total RVdev RVDeveloped (watershed -inch) with Runoff Reduction* 0.26 0.48 1.40 Adjusted CN* 57 57 57 0.84 * 0.26 = 0.22 POINT OF ANALYSIS 3 POST -DEVELOPMENT DA-P 1-Year DA-P 10-Year H dro rah e Y 9 P type Storm frequency Time interval age area Dra9 Basin Slope Tc method Total precip. Storm duration = SCS Runoff = 1 yrs = 2 min = 0.840 ac = 6.1 % = LAG = 3.04 in = 24 hrs Peak discharge r9 Time to peak Hyd. volume Curve number Hydraulic length Time of cone. (Tc) Distribution Shape factor = 0.137 cfs = 724 min = 811 cuft = 57 = 425 ft = 12.14 min = Type II = 484 Q (ds) DA-P Hyd. No. 28 -1 Year Q (cfs) 0.50 0.50 OA5 0.45 OAO I 0.40 0.35 I � I I 0.35 � __ 0.30 0.30 0.25 0.25 0.20 0.20 0.15 0.15 0.10 0.05 _ 0.10 0.05 0.00 0 120 240 360 480 600 720 840 960 1080 1200 Hyd No. 28 0.00 1320 1440 1560 Time (min) H dro rah e Y 9 P type Storm frequency Time interval Drainage area Basin Slope Tc method Total precip. Storm duration = SCS Runoff = 10 yrs = 2 min = 0.840 ac = 6.1 % = LAG = 5.54 in = 24 hrs Peak discharge r9 Time to peak Hyd. volume Curve number Hydraulic length Time of cone. (Tc) Distribution Shape factor = 1.581 cfs = 722 min = 4,415 cuft = 57 = 425 ft = 12.14 min = Type II = 484 Q () DA-P Hyd. 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I \ / I 50' 0 1 ; P DE/V l LOP 1 I L AGE; A \` \` F/ -.. -.. -- / / 2 / PA1l�T D V l LOPLL�i AG A - =%' I I"I 1 ♦ I I t I - -_ -\\ f , SHEET 17 of 20 \` ` ` '% A08 LLC ■■ - \\ ` \. -;: ;�i' SCALE: 1"=50' C, 622 LE: 1° 50' ,/'' I 1 // \ - - 77' TECii` , C 22 S�#LE: 1"75g' E // \`. - -�i-- 1 \\\ / ' / - I \ - - - I I I,IP CO 6 \ , / / - I \` -_: ,�' I 1 \ \ \ Project Name: Woolen Mills Light Industrial Date: 12/2/2020 BMP Design Specifications List: 2013 Draft Stds & Specs Site Information Post -Development Project (Treatment Volume and Loads) Land Cover (acres) A Soils B Soils C Soils D Soils Totals Forest/Open Space (acres) -- undisturbed, protected forest/open s ace or reforested 6.56 6.56 Managed Turf (acres) -- disturbed, graded for ardsorotherturftobe 0.13 2.18 2.31 Impervious Cover(acres) 4.47 4.47 * Forest/Open Space areas must he protected in accordance with the Virginia Runoff Reduction Method 13.34 (Constants Runoff Coefficients IRv1 Annual Rainfall (inches) 43 Target RainfallEvent(inches) 1.00 Total Phosphorus (TP) EMC (mg/L) 0.26 Total Nitrogen (TN) EMC (mg/L) 1.86 Target TP Load (I b/acre/yr) 0.41 Pj (unitless correction factor) 0.90 Land Cover Summary Forest/Open Space Cover (acres) 6.56 Weighted Rv (forest) 0.03 % Forest 49% Managed Turf Cover (acres) 2.31 Weighted Rv (turf) 0.20 %Ma na ged Turf 17% Impervious Cover (acres) 4.47 Rv (impervious) 0.95 %Impervious 34% Site Area (acres) 1334 Site Rv 0.37 A Soils B Soils C Soils D Soils Forest/Open Space 0.02 0.03 0.04 0.05 Managed Turf 0.15 0.20 0.22 0.25 Impervious Cover 0.95 0.95 0.95 1 0.95 DEVELOPMENTST Treatment Volume and Nutrient Loads Treatment Volume 0.4082 (acre-ft) Treatment Volume (cubic feet) 17,783 TP Load (lb/yr) 11.17 TN Load (lb/yr) 79.93 Informational Purposes Only) data input cells constant values calculation cells 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 AREA CHECK OK. OK. OK. OK. OK. Site Treatment Volume (ft3) 17,783 Runoff Reduction Volume and TP By Drainage Area RUNOFF REDUCTION VOLUME ACHIEVED (ft3) TP LOAD AVAILABLE FOR REMOVAL (lb/yr) TP LOAD REDUCTION ACHIEVED (lb/yr) TP LOAD REMAINING (lb/yr) D.A. C 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 OK. OK. J OK. 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 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 NITROGEN LOAD REDUCTION ACHIEVED (Ib/yr) 0.00 0.00 1 0.00 0.00 0.00 1 0.00 Total Phosphorus FINAL POST -DEVELOPMENT TP LOAD (Ib/yr) 11.17 TP LOAD REDUCTION REQUIRED (lb/yr) 5.70 TP LOAD REDUCTION ACHIEVED (lb/yr) 0.00 TP LOAD REMAINING (Ib/yr): 11.17 REMAINING TP LOAD REDUCTION REQUIRED (lb/yr): 5.70 Total Nitrogen (For Information Purposes) POST -DEVELOPMENT LOAD (lb/yr) 79.93 NITROGEN LOAD REDUCTION ACHIEVED (lb/yr) 0.00 REMAINING POST -DEVELOPMENT NITROGEN LOAD (lb/yr) 79.93 STORMWATER QUALITY NARRATIVE 1. OWNER PURCHASED 3.05 LB/YR OF NUTRIENT CREDITS ON MAY 2, 2017. 2. THE OWNER WILL PURCHASE AN ADDITIONAL 2.65 LBS/YR. 3. TOTAL NUTRIENT CREDITS PURCHASED WILL EQUAL 5.71 LBS/YR. 4. SEE C-620 FOR CHANNEL PROTECTION AND FLOOD CONTROL NARRATIVE. 5. HYDROLOGIC UNIT CODE FOR THIS PARCEL IS 02050204. 1i ❑VERLAN0I VA December 28, 2020 Timothy Miller, P,E., L.S. Principal Meridian Planning Group 440 Premier Circle, Suite 200 Charlottesville, VA 22901 RE: Nutrient Credit Availability - Woolen Mills Industrial Park Dear Tim, This letter is to certify that as of today, December 28, 2020, Troublesome Creek Nutrient Bank (Servicing Hydrologic Unit Codes: 02080201, 02080202, 02080203, 02080204, 02080205, 02080207) has 103.90 pounds of phosphorus and 347.75 pounds of nitrogen available for transfer to those entities requiring offsets in accordance with the Chesapeake Bay Watershed Nutrient Credit Exchange Program. Please feel free to reach out with any questions or concerns. I hope we have the opportunity to work together on this assignment. Best. 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WAREHOUSE \ \\ \ EX. 20' PRIVATE STORM \ \\ SEWER EASEMENT \ DB 4935-90 TMP 77-40B ELEMENTAL ECOTECH, LLC DB 5256-213 14.0617 ACRES ZONE: LI USE: VACANT EX. 20' PUBLIC DRAINAGE EASEMENN�T\ DB 5198 PG 30 A PORTION HEREBY VACATED ffiz, 17-77-71771 20' PUBLIC AINAGE EASEMENT 15198 PG 30 IS la � - 1 - IF I I 1 ITMP 77-40 j MARTUC LLC D. B. 3847, Pg. 332 ZONE: LI iUSE: DIST. WAREHOUSE I I I I I \ \ \ \ \ \ TMP 77-40N \, TREM COMMERCIAL RENTALS, LLC DB 2893-653 DB 907-684, PLAT ZONE: LI \ , USE: STORAGE WAREHOUSE y CP I N.• 3895619.6 E. 11494034.7 TMP 77- 4OC2 I JACKRABBIT PARTNERS LLC. DB 3155-18 I ZONE: LI USE: DRY CLEANERS , CP-z 3g8 SE N.• 3894989.85 / E: 11494227.63 7� R EX. 20' PRIVATE DRAINAGE EASEMENT DB 5515-408 NEW 20' PRIVATE SWF ACCESS EASEMENT EX. 20' PRIVATE STORM SEWER EASEMENT DB 4935 PG 90 A PORTION HEREBY VACATED EX. VARIABLE WIDTH SWM FACILITY EASEMENT DB 4935 PG 90 HEREBY VACATED Iv A� A� 76A35, LI R 118 6�TO �q N A \ \ F TMP 77-40 \ RIVANNA WATE \ SEWER AUTHO DB 565-28 \ DB 331-554, P \ ZONE: LI USE: VACAN \ TMP 77-38B RIVANNA WATER & \ d SEWER AUTHORITY z DB 768-277 cn DB 616-135, PLAT ZONE: LI \ USE: VACANT CHARLOTTESVILLE \ TMP 56-87.1 BOLTON, \ ' EX. 20' DRAINAGE N.- 3894920.04 EASEMENT E: 11493169.75 DB 526-576 (CITY) .... _ DB 1051-235 I —...—...—.. — . _... — ... — ... — ... EX. 20' DRAINAGE EASEMENT CP-3 DB 3594-664 N.• 3894398.55 E. 11493606.01 j I I RECORDED & VACATED DRAINAGE EASEMENTS SCALE: 1" = 50' CONSTANCE TRUST & SHIRLEY BOLTON WB 2013-163 I I I 3}Sb 22g�, F I I ti 50' 0 50' 100' 150' SCALE: 1 "=50' I I I I I I I I I I I I I I I I I I I I I I I \ I I I I I I I I I 5 \ \ o DE263 / F� \ 00 EX. 33.8' SWM \ FACILITY EASEMENT DB 5515-392 \ DE?Og \ TMP 77-40M H5, LLC DB 5033- 635ZONE: LI \�\\ USE: DIST. 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WAREHOUSE I I I I I SWM FACILITY EAPNtw zu ICE'S N.- 3894920.04 EX. 20' DRAINAGE E: 11493169.75 EASEMENT DB 526-576 (CITY) �..._ DB 1051-235 EX. 20' DRAINAGE EASEMENT CP-3 DB 3594-664 N- 3894398 55 2 NEW DRAINAGE EASEMENTS -63 SCALE: 1" = 50' LEGEND DB DEED BOOK PG PAGE FH FIRE HYDRANT WV WATER VALVE WM WATER METER FFE FINISHED FLOOR ELEVATION UFE UPPER FINISHED FLOOR ELEVATION BSL BUILDING SETBACK LINE PSL PARKING SETBACK LINE PP POWER POLE SCC STORMWATER CONVEYANCE CHANNEL WP WALLPACK ULD ULTIMATE LIMITS OF DISTURBANCE TP TREE PROTECTION FENCING E. 11493606.01 I = VARIABLE WIDTH FOREST AND OPEN SPACE EASEMENT A 50' w A z 0 E-E a a z z n w Q O U E- E- . .% 0 0 Oz . i\i O � 711 a a a E� E� a E E- Z O cl) W E-I E- a a E U E- SHEET NO. 100' 150' C-630 SHEET 19 of 20 s \ CP-1 I N.• 3895619.62 O / \ E: 11494034.75 / S� V.� TMP 77-4OC2 I g��� 4��g 0. / \ JACKRABBIT 6'1 PARTNERS LLC. �, �\ 6 DB 3155-18 ZONE: LI USE- DRY CLEANERS oo \ T� v �6 �v16)lvs EX. VARIABLE WIDTH FOREST \ / AND OPEN SPACE EASEMENT �. DB 5198 PG 45 TMP 77-40M A 0.11 AC PORTION H5, LLC \ DB 5033-635 HEREBY VACATED ' J ZONE: LI USE: DIST. WAREHOUSE \ EX. VARIABLE WIDTH \ FOREST AND OPEN SPACE EASEMENT DB 5198-45 \ \ 0.90 AC \ TMP 77-40B ELEMENTAL ECOTECH, LLC DB 5256-213 \ \ 14.0617 ACRES ZONE: LI C USE: VACANT \ a a 'p o a \ \ r - EX. VARIABLE WIDTH FOREST AND OPEN SPACE EASEMENT \ DB 5198-45 0.24 AC CHARLOTTESVILLE TMP 56-87.1 - BOLTON, y' ' CONSTANCE /o TRUST & SHIRLEY BOLTON WB 2013-163 is I Is ` _ 1 �. I _ - \ \ \ \ \ \ \ TMP 77-40N TREM COMMERCIAL RENTALS, LLC DB 2893-653 DB 907-684, PLAT ZONE: LI \ , USE: STORAGE WAREHOUSE y CP- I N.• 3895619.6 E. 11494034.7 TMP 77- 4OC2 I JACKRABBIT PARTNERS LLC. DB 3E: LI LI I / ZONE: USE: DRY CLEANERS /PEC309 oj4� 6'1 66 AEC308 tj UP-2 'D SE N.- 3894989.85 / �3 E: 11494227.63 / � p 010 �B 6�TO1 �q N' A \ \ \ F TMP 77-40 RIVANNA WATE \ SEWER AUTHO \ DB 565-28 \ DB 331-554, P ZONE: LI \ USE: VACAN TMP 77-38B �_ z RIVANNA WATER & \ \ d SEWER AUTHORITY z DB 768-277 t7� cr, DB 616-135, PLAT ZONE: LI USE: VACANT 100-YR FEMA FLOODPLAIN EX. VARIABLE WIDTH FOREST NEW 20' PRIVATE 9 Wpm AND OPEN SPACE EASEMENTS ACCESS EASEMENT I DB 4935 PG 90 A 0.79 AC PORTION I HEREBY VACATED TMP 77-40 o i MARTUC LLC J FH FLOOD HAZARD LE427- D. B. 3847, Pg. 332 \ OVERLAY DISTRICT ZONE: LI ^ i USE: DIST. WAREHOUSE 100-YR FEMA ' FLOODPLAIN I I r W, •+r «� M CP- 4 N.• 3894920.04 E' 11493169.75 RECORDED & VACATED FOREST & OPEN SPACE EASEMENTS SCALE: 1" = 50' N.• 3894398.55 r' E. 11493606.01 i CHARLOTTESVILLE \ TMP 56-87.1 010 BOLTON, '\00 `\� CONSTANCE j �, TRUST & �• LE410 SHIRLEY ', ' BOLTON ' ��•1000 WB 2013-163 I ' S AS3. j I 0 A 1 1 1 100, 1 1 I i I I I i I I I I I I I 0 W AE312---\ AE311--) AEC305 AE31 '01' / \ AE315 / \ EX. VARIABLE WIDTH INGRESS, \ EGRESS, CONSTRUCTION & UTILITY EASEMENT DB 4797-416 M \ U \ TMP 77-40M H5, LLC \ \ DB 5033-635 ZONE: LI USE: DIST. WAREHOUSE \ AEC318 \ \ PE328 AE329 \ \ \ 527 F \ 26 TMP 77-40B ��gTF�90 gFC3>> ELEMENTAL ECOTECH, LLC DB 5256-213 14.0617 ACRES ZONE: LI USE. VACANT EX. VARIABLE WIDTH PRIVATE &ACSA ACCESS EASEMENT DB 5515-392 EX. VARIABLE WIDTH PRIVATE & ACSA / ACCESS EASEMENT / DB 5198 PG 30 <\ AEC320 \ \ \ \ \ \ TMP 77-40N \, TREM COMMERCIAL RENTALS, \ LLC DB 2893-653 DB 907-684, PLAT ZONE: LI \ USE: STORAGE WAREHOUSE y N.• 3894989.8 E: 11494227.6 , & sEj ti g p o � �76gg5 P L g1 'OD 6�T0 1 � "J 'N AT SSE. N TMP 77-40A ONRIVANNA WATE. (PRIVATE) SEWER AUTHOR DB 565-288 W AE308 AE307 AE306DB 331-554, P. A LI P USZONE: E: VACAN`j AE304 NE303 AE305 \ AE302 AE301 / TMP 77-38B pEC3p1 FORD'S ROAD ' RIVANNA WATER & \ AE319 SEWER AUTHORITY (PRIVATE) DB 768-277 T AE320 DB 616-135, PLAT \ �� PEC314 ZONE: LI AEC313 USE: VACANT AE322 \ EX. VARIABLE WIDTH PRIVATE & ACSA ACCESS EASEMENT ` \ DB 5515-392 .� ,i�rrr,r.r'r"�•►,��_,� IS '�.�1 ♦`' 0000,000 IF N f .�� IF - ` ........... I ITMP 77-40 ' MARTUC LLC ' I D. B. 3847, Pg. 332 ` ZONE: LI � iUSE: DIST. WAREHOUSE I N.- 3894920.0 E: 11493169.7 2 NEW ACCESS EASEMENT PLAT -631 SCALE: 1" = 50' LEGEND DB DEED BOOK PG PAGE FH FIRE HYDRANT WV WATER VALVE WM WATER METER FFE FINISHED FLOOR ELEVATION UFE UPPER FINISHED FLOOR ELEVATION BSL BUILDING SETBACK LINE PSL PARKING SETBACK LINE PP POWER POLE SCC STORMWATER CONVEYANCE CHANNEL WP WALLPACK ULD ULTIMATE LIMITS OF DISTURBANCE TP TREE PROTECTION FENCING NEW 20' PRIVATE SWF slit.\ ACCESS EASEMENT I �22 ;ASF I I j: :M / U .W 1 � ■ N I N 1 1 I 40 I f j: N.- 3894398.5 E. 11493606.6 ® VARIABLE WIDTH FOREST AND OPEN SPACE EASEMENT A/ O 50' O O o rn z o ul d x E O z ¢ .4 �w ono m O A z W z W U A Q U Z � Z � 100 �aC\2o E O Z O U O r Co�> I W �� W'Ia°Dz to a �wCS U W 0 � Z �z W W 6 A z`\2 O 711 as ��� Qw� Q W O Z O a a E- E U > SHEET NO. 100' 150' C-631 SHEET 20 of 20